Messages in this thread Patch in this message | | | From | Christopher Heiny <> | Subject | [PATCH 1/1] input synaptics-rmi4: Synaptics RMI4 Touchscreen Driver | Date | Tue, 1 Mar 2011 20:26:35 -0800 |
| |
Driver for Synaptics touchscreens using RMI4 protocol.
Signed-off-by: William Manson <wmanson@synaptics.com> Signed-off-by: Allie Xiong <axiong@synaptics.com> Signed-off-by: Christopher Heiny <cheiny@synaptics.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Linus Walleij <linus.walleij@stericsson.com> Cc: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
---
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index b62139b..48219b3 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -314,7 +314,24 @@ config TOUCHSCREEN_SYNAPTICS_RMI4_I2C If unsure, say N. To compile this driver as a set of modules, choose M here: the - modules will be called rmi, rmi_app_touchpad, rmi_phys_i2c. + modules will be called rmi_core, rmi_app_touchpad, rmi_phys_i2c. + +config TOUCHSCREEN_SYNAPTICS_RMI4_SPI + tristate "Synaptics RMI4 SPI touchscreens" + depends on SPI + help + Say Y here if you have a Synaptics RMI4 SPI touchscreen connected to + your system. This enables support for Synaptics RMI4 over SPI based + touchscreens. + + If unsure, say N. + + To compile this driver as a set of modules, choose M here: the + modules will be called rmi_core, rmi_app_touchpad, rmi_phys_spi. + +config SYNA_MULTI_TOUCH + bool "Synaptics pointing using multi-touch events" + depends on TOUCHSCREEN_SYNAPTICS_RMI4_I2C || TOUCHSCREEN_SYNAPTICS_RMI4_SPI config TOUCHSCREEN_TOUCHRIGHT tristate "Touchright serial touchscreen" diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index b81109b..a17e03e 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -31,7 +31,8 @@ obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE) += usbtouchscreen.o obj-$(CONFIG_TOUCHSCREEN_PCAP) += pcap_ts.o obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o -obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_RMI4_I2C) += rmi_core.o rmi_app_touchpad.o rmi_function_11.o rmi_phys_i2c.o +obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_RMI4_I2C) += rmi_bus.o rmi_sensor.o rmi_function.o rmi_f01.o rmi_f11.o rmi_f34.o rmi_i2c.o +obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_RMI4_SPI) += rmi_bus.o rmi_sensor.o rmi_function.o rmi_f01.o rmi_f11.o rmi_f34.o rmi_spi.o obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o diff --git a/drivers/input/touchscreen/rmi.h b/drivers/input/touchscreen/rmi.h index 7cec9b8..c90b8e7 100644 --- a/drivers/input/touchscreen/rmi.h +++ b/drivers/input/touchscreen/rmi.h @@ -1,7 +1,7 @@ /** * * Synaptics Register Mapped Interface (RMI4) Header File. - * Copyright (c) 2007 - 2010, Synaptics Incorporated + * Copyright (c) 2007 - 2011, Synaptics Incorporated * * */ @@ -43,48 +43,6 @@ struct rmi_function_descriptor { unsigned char functionNum; }; -/* For each function present on the RMI device, there will be a corresponding - * entry in the functions list of the rmi_module_info structure. This entry - * gives information about the number of data sources and the number of data - * registers associated with the function. - */ -struct rmi_function_info { - unsigned char functionNum; - - /* This is the number of data sources associated with the function.*/ - unsigned char numSources; - - /* This is the number of data points supported - for example, for - * function $11 (2D sensor) the number of data points is equal to the - * number of fingers - for function $19 (buttons)it is the number of - * buttons. - */ - unsigned char numDataPoints; - - /* This is the number of data registers to read.*/ - unsigned char dataRegBlockSize; - - /* This is the interrupt register and mask - needed for enabling the - * interrupts and for checking what source had caused the attention line - * interrupt. - */ - unsigned char interruptRegister; - unsigned char interruptMask; - - /* This is the RMI function descriptor associated with this function. - * It contains the Base addresses for the functions query, command, - * control, and data registers. - */ - struct rmi_function_descriptor funcDescriptor; - - /* A list of the function information. - * This list uses the standard kernel linked list implementation. - * Documentation on on how to use it can be found at - * http://isis.poly.edu/kulesh/stuff/src/klist/. - */ - struct list_head link; -}; - /* This encapsulates the information found using the RMI4 Function $01 * query registers. There is only one Function $01 per device. * @@ -98,7 +56,7 @@ struct rmi_function_info { * Guide" document : go to http://www.synaptics.com/developers/manuals - and * select "Synaptics RMI 4 Interfacting Guide". */ -struct rmi_module_info { +struct rmi_F01_query { /* The Protocol Major Version number.*/ unsigned rmi_maj_ver; @@ -124,83 +82,66 @@ struct rmi_module_info { unsigned short serial_num; /* A null-terminated string that identifies this particular product.*/ - char prod_id[10]; - - /* A list of the function presence queries. - * This list uses the standard kernel linked list implementation. - * Documentation on on how to use it can be found at - * http://isis.poly.edu/kulesh/stuff/src/klist/. - */ - struct list_head functions; + char prod_id[11]; }; -struct rmi_phys_driver { - char *name; - int (*write)(struct rmi_phys_driver *pd, unsigned short address, - char data); - int (*read)(struct rmi_phys_driver *pd, unsigned short address, - char *buffer); - int (*write_multiple)(struct rmi_phys_driver *pd, - unsigned short address, char *buffer, int length); - int (*read_multiple)(struct rmi_phys_driver *pd, unsigned short address, - char *buffer, int length); - void (*attention)(struct rmi_phys_driver *pd, int instance); - bool polling_required; - int irq; - - /* Standard kernel linked list implementation. - * Documentation on how to use it can be found at - * http://isis.poly.edu/kulesh/stuff/src/klist/. - */ - struct list_head drivers; - struct rmi_application *app; - struct rmi_module_info rmi; - struct module *module; +/* This encapsulates the F01 Device Control control registers. + * TODO: This isn't right. The number of interrupt enables needs to be determined + * dynamically as the sensor is initialized. Fix this. + */ +struct rmi_F01_control { + unsigned char deviceControl; + unsigned char interruptEnable[1]; }; -int rmi_read(struct rmi_application *app, unsigned short address, char *dest); -int rmi_write(struct rmi_application *app, unsigned short address, - unsigned char data); -int rmi_read_multiple(struct rmi_application *app, unsigned short address, - char *dest, int length); -int rmi_write_multiple(struct rmi_application *app, unsigned short address, - unsigned char *data, int length); -int rmi_register_phys_driver(struct rmi_phys_driver *rpd); -int rmi_unregister_phys_driver(struct rmi_phys_driver *rpd); - -struct rmi_application *rmi_register_application(const char *name, - void (*attention)(struct rmi_phys_driver *pd, int instance), - int (*probe)(struct rmi_application *app, - const struct rmi_module_info *rmi), - void (*config)(struct rmi_application *app)); - -void rmi_unregister_application(struct rmi_application *app); -bool rmi_polling_required(struct rmi_application *app); - -/* Set this to 1 to turn on code used in detecting buffer leaks. */ -#define RMI_ALLOC_STATS 1 - -#if RMI_ALLOC_STATS -extern int appallocsrmi; -extern int rfiallocsrmi; -extern int fnallocsrmi; - -#define INC_ALLOC_STAT(X) (X##allocsrmi++) -#define DEC_ALLOC_STAT(X) \ - do { \ - if (X##allocsrmi) X##allocsrmi--; \ - else printk(KERN_DEBUG "Too many " #X " frees\n"); \ - } while (0) -#define CHECK_ALLOC_STAT(X) \ - do { \ - if (X##allocsrmi) \ - printk(KERN_DEBUG "Left over " #X " buffers: %d\n", \ - X##allocsrmi); \ - } while (0) -#else -#define INC_ALLOC_STAT(X) do { } while (0) -#define DEC_ALLOC_STAT(X) do { } while (0) -#define CHECK_ALLOC_STAT(X) do { } while (0) -#endif +/** This encapsulates the F01 Device Control data registers. + * TODO: This isn't right. The number of irqs needs to be determined + * dynamically as the sensor is initialized. Fix this. + */ +struct rmi_F01_data { + unsigned char deviceStatus; + unsigned char irqs[1]; +}; + + +/**********************************************************/ + +/** This is the data read from the F11 query registers. + */ +struct rmi_F11_device_query { + bool hasQuery9; + unsigned char numberOfSensors; +}; + +struct rmi_F11_sensor_query { + bool configurable; + bool hasSensitivityAdjust; + bool hasGestures; + bool hasAbs; + bool hasRel; + unsigned char numberOfFingers; + unsigned char numberOfXElectrodes; + unsigned char numberOfYElectrodes; + unsigned char maximumElectrodes; + bool hasAnchoredFinger; + unsigned char absDataSize; +}; + +struct rmi_F11_control { + bool relativeBallistics; + bool relativePositionFilter; + bool absolutePositionFilter; + unsigned char reportingMode; + bool manuallyTrackedFinger; + bool manuallyTrackedFingerEnable; + unsigned char motionSensitivity; + unsigned char palmDetectThreshold; + unsigned char deltaXPosThreshold; + unsigned char deltaYPosThreshold; + unsigned char velocity; + unsigned char acceleration; + unsigned short sensorMaxXPos; + unsigned short sensorMaxYPos; +}; #endif diff --git a/drivers/input/touchscreen/rmi_app_touchpad.c b/drivers/input/touchscreen/rmi_app_touchpad.c deleted file mode 100644 index 5f3bd81..0000000 --- a/drivers/input/touchscreen/rmi_app_touchpad.c +++ /dev/null @@ -1,400 +0,0 @@ -/** - * - * Synaptics Register Mapped Interface (RMI4) TouchPad Application Layer Driver. - * Copyright (c) 2007 - 2010, Synaptics Incorporated - * - * - * This code implements a polling mechanism using a timer as well as - * interrupt-driven sampling. - * - * Note that it is the lower-level drivers that determine whether this driver - * has to do polling or interrupt-driven. Polling can always be done, but if - * we have an interrupt connected to the attention (ATTN) line, then it is - * better to be interrupt driven. - * - */ -/* - * This file is licensed under the GPL2 license. - * - *############################################################################# - * GPL - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - *############################################################################# - */ - -#include <linux/kernel.h> -#include <linux/device.h> -#include <linux/delay.h> -#include <linux/hrtimer.h> -#include <linux/kthread.h> -#include <linux/freezer.h> -#include <linux/input.h> -#include <linux/interrupt.h> - -#include "rmi.h" -#include "rmi_core.h" -#include "rmi_functions.h" - -#define RMI_REPORT_RATE_80 0 -#define RMI_REPORT_RATE_40 (1 << 6) - -static long polltime = 25000000; -module_param(polltime, long, 0644); -MODULE_PARM_DESC(polltime, "How long to wait between polls (in nano seconds)."); - -static struct rmi_application *app; - -/* TODO: We should move this to the application data struct and allow more than - one input device per system. We'll address in a follow up patch. */ -static struct input_dev *input; - -/* RMI4 device control == function 0x01 */ -extern unsigned short fn01ControlBaseAddr; -/* number of total interrupt registers to read */ -extern unsigned int interruptRegisterCount; - - -/** - * This is the function we pass to the RMI4 subsystem so we can be notified - * when attention is required. It may be called in interrupt context. - */ -static void attention(struct rmi_phys_driver *rpd, int instance) -{ - /* All we have to do is schedule work. */ - schedule_work(&(rpd->app->work)); -} - -/** - * This is the meat of the driver. It reads in all data sources and reports - * them to the input subsystem. It is used for both polling and interrupt - * driven operation. - */ -int report_sensor_data(struct rmi_application *app) -{ - unsigned char interruptStatus[4] = {0, 0, 0, 0}; - int touch; /* number of touch points - fingers or buttons */ - struct rmi_functions *fn; - struct rmi_function_info *rfi; - struct rmi_phys_driver *rpd; - struct rmi_module_info *rmi; - static int num_error_reports; - - touch = 0; - - /* Get the interrupt status from the function $01 control register+1 to - find which source(s) were interrupting so we can read the data from the - source(s) (2D sensor, buttons, etc.). - */ - if (rmi_read_multiple(app, fn01ControlBaseAddr + 1, - interruptStatus, interruptRegisterCount)) { - printk(KERN_ERR "%s: Could not read interrupt status registers 0x%x\n", - __func__, fn01ControlBaseAddr + 1); - return 0; - } - - /* check each function that has data sources and if the interrupt for - * that triggered then call that RMI4 functions report() function to - * gather data and report it to the input subsystem */ - rpd = app->rpd; /* get ptr to rmi_physical_driver from app */ - rmi = &(rpd->rmi); /* get ptr to rmi_module_info from physical driver */ - - list_for_each_entry(rfi, &rmi->functions, link) { - if (rfi->numSources) { - if (interruptStatus[rfi->interruptRegister] & - rfi->interruptMask) { - bool found; - found = false; - fn = rmi_find_function(rfi->functionNum); - if (fn) { - found = true; - if (fn->report) { - touch = fn->report(app, - rfi, fn->input); - } else { - num_error_reports++; - if (num_error_reports < 6) { - /* the developer did not add in the - pointer to the report function into - rmi4_supported_data_src_functions */ - printk(KERN_ERR "%s: no find report function for function 0x%x\n", __func__, fn->functionNum); - } - } - } - - if (!found) { - num_error_reports++; - if (num_error_reports < 6) { - /* if no support found for this - RMI4 function it means the - developer did not add the - appropriate function pointer - list into the rmi4_supported_data_src_functions - array and/or did not bump up - the number of supported RMI4 - functions in rmi.h as required. - */ - printk(KERN_ERR "%s: could not find any support for function 0x%x\n", __func__, fn->functionNum); - } - } - } - } - } - - /* return the number of touch points - fingers down and/or buttons - * pressed, etc. */ - return touch; -} - -/* This is the worker function - it simply has to call report_sensor_data. */ -static void ts_work_func(struct work_struct *work) -{ - struct rmi_application *app = container_of(work, - struct rmi_application, work); - - report_sensor_data(app); - - /* we only need to enable the irq if doing interrupts */ - if (!rmi_polling_required(app)) - enable_irq(app->rpd->irq); -} - -/* This is the timer function for polling - it simply has to schedule work - * and restart the timer. */ -static enum hrtimer_restart ts_poll_timer_func(struct hrtimer *timer) -{ - struct rmi_application *app = container_of(timer, - struct rmi_application, timer); - - schedule_work(&app->work); - hrtimer_start(&app->timer, ktime_set(0, polltime), HRTIMER_MODE_REL); - return HRTIMER_NORESTART; -} - -/** - * This is the probe function passed to the RMI4 subsystem that gives us a - * chance to recognize an RMI4 device. In this case, we're looking for - * Synaptics devices that have data sources - such as touch screens, buttons, - * etc. - */ -static int probe(struct rmi_application *app, - const struct rmi_module_info *rmi) -{ - struct rmi_function_info *rfi; - int data_sources = 0; - int retval = 0; - - if (!rmi) { - printk(KERN_ERR "%s: Invalid module info: %p\n", __func__, rmi); - return 0; - } - - /* Check if this is a Synaptics device - report if not. */ - if (rmi->mfgid != 1) { /* Synaptics? */ - printk(KERN_INFO "%s: non-Synaptics mfg id: %d\n", - __func__, rmi->mfgid); - } - - /* for each function entry in the list accumulate it's number of data - sources */ - list_for_each_entry(rfi, &rmi->functions, link) { - data_sources += rfi->numSources; - } - - if (data_sources) { - retval = 1; - /* We have detected one or more data sources such as - 2D Sensors, buttons, etc. */ - printk(KERN_INFO "%s: Found %d data sources for : %p\n", - __func__, data_sources, rmi); - } else { - /* we don't have any data sources for this sensor - oops! - - either an un-flashed sensor or bad!! */ - printk(KERN_INFO "%s: No data sources found for : %p\n", - __func__, rmi); - } - - return retval; -} - -static void config(struct rmi_application *app) -{ - /* For each data source we had detected print info and set up interrupts - or polling. */ - struct rmi_function_info *rfi; - struct rmi_phys_driver *rpd; - struct rmi_module_info *rmi; - - rpd = app->rpd; /* get ptr to rmi_physical_driver from app */ - rmi = &(rpd->rmi); /* get ptr to rmi_module_info from physical driver */ - - list_for_each_entry(rfi, &rmi->functions, link) { - if (rfi->numSources) { - /* This function has data sources associated with it.*/ - /* Get and print some info about the data sources... */ - struct rmi_functions *fn; - bool found = false; - /* check if function number matches - if so call that - config function */ - fn = rmi_find_function(rfi->functionNum); - if (fn) { - found = true; - if (fn->config) { - fn->config(app, rfi); - } else { - /* the developer did not add in the - pointer to the config function into - rmi4_supported_data_src_functions */ - printk(KERN_ERR - "%s: no config function for " - "function 0x%x\n", - __func__, rfi->functionNum); - break; - } - } - - if (!found) { - /* if no support found for this RMI4 function - it means the developer did not add the - appropriate function pointer list into the - rmi4_supported_data_src_functions array and/or - did not bump up the number of supported RMI4 - functions in rmi.h as required */ - printk(KERN_ERR"%s: could not find support " - "for function 0x%x\n", - __func__, rfi->functionNum); - } - - /* if we are not doing polling then enable the - interrupts for the data sources for this function */ - if (!rmi_polling_required(app)) { - /* Turn on interrupts for this - function's data sources. */ - rmi_write(app, fn01ControlBaseAddr + 1 + - rfi->interruptRegister, - rfi->interruptMask); - printk(KERN_INFO - "%s: Interrupt Driven - turning on " - "interrupts for function 0x%x\n", - __func__, rfi->functionNum); - } - } - } - - /* if we are not polling we need to set up the interrupt worker - thread - otherwise we need to set up the polling callback and - worker thread. */ - if (!rmi_polling_required(app)) { - /* We're interrupt driven, so set up packet rate and the worker - thread function. */ - if (HZ < 500) { - /* The default packet rate of 80 packets per - * second is too fast (the Linux time slice for - * sub-GHz processors is only 100 times per second). - * So re-program it to 40 packets per second. - */ - rmi_write(app, fn01ControlBaseAddr, RMI_REPORT_RATE_40); - } - - INIT_WORK(&app->work, ts_work_func); - - } else { - /* We're polling driven, so set up the polling timer - and timer function. */ - INIT_WORK(&app->work, ts_work_func); - hrtimer_init(&app->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); - app->timer.function = ts_poll_timer_func; - hrtimer_start(&app->timer, ktime_set(1, 0), HRTIMER_MODE_REL); - } -} - -/** - * The module initialization function in which we register as a RMI4 - * application driver. We also register with the input subsystem so we can - * pass coordinates to it. - */ -static int __init rmi_app_touchpad_init(void) -{ - int retval; - - retval = 0; - - pr_debug("%s: RMI4 TouchPad Driver\n", __func__); - - /* NOTE: we are creating only one input dev file for this but - theoretically you could create a separate one for each data - source and store it below. This will let you put 2D sensor - events into one dev file, button events into a separate dev file, - other data source event like GPIOs, etc. into yet a third dev file. - As this is being coded it will dump all events into the one dev file. - */ - input = input_allocate_device(); - if (input == NULL) { - printk(KERN_ERR "%s: Failed to allocate memory for a " - "new input device.\n", - __func__); - return -ENOMEM; - } - - input->name = "RMI4 Touchpad"; - input->phys = "rmi_app_touchpad"; - - /* Set input device specific params for each data source...*/ - retval = rmi_functions_init(input); - - if (retval) { - printk(KERN_ERR "%s: Failed rmi_functions_init.\n", __func__); - return retval; - } - - retval = input_register_device(input); - - if (retval) { - printk(KERN_ERR "%s: Failed input_register_device.\n", - __func__); - return retval; - } - - app = rmi_register_application("rmi4_touchpad", - attention, probe, config); - - if (!app) { - printk(KERN_ERR "%s: Failed to register app.\n", __func__); - input_unregister_device(input); - retval = -ENODEV; - } - - return retval; -} - -static void __exit rmi_app_touchpad_exit(void) -{ - pr_debug("%s: RMI4 TouchPad Driver\n", __func__); - - /* Stop the polling timer if doing polling */ - if (rmi_polling_required(app)) - hrtimer_cancel(&app->timer); - - flush_scheduled_work(); /* Make sure all scheduled work is stopped */ - - /* Unregister everything */ - printk(KERN_WARNING "%s: Unregistering app - %s\n", - __func__, app->name); - rmi_unregister_application(app); - input_unregister_device(input); -} - -module_init(rmi_app_touchpad_init); -module_exit(rmi_app_touchpad_exit); - -MODULE_AUTHOR("Synaptics, Inc."); -MODULE_DESCRIPTION("RMI4 Driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/rmi_bus.c b/drivers/input/touchscreen/rmi_bus.c new file mode 100755 index 0000000..15b83a1 --- /dev/null +++ b/drivers/input/touchscreen/rmi_bus.c @@ -0,0 +1,388 @@ +/** + * Synaptics Register Mapped Interface (RMI4) - RMI Bus Module. + * Copyright (C) 2007 - 2011, Synaptics Incorporated + * + * Impliments "rmi" bus per Documentation/driver-model/bus.txt + * + * This protocol is layered as follows. + * + * + * + * +-------+ +-------+ +-------+ +--------+ + * | Fn32 | | Fn11| | Fn19 | | Fn11 | Devices/Functions + * *---|---+ +--|----+ +----|--+ +----|---* (2D, cap. btns, etc.) + * | | | | + * +----------------+ +----------------+ + * | Sensor0 | | Sensor1 | Sensors Dev/Drivers + * +----------------+ +----------------+ (a sensor has one or + * | | more functions) + * | | + * +----------------------------------------+ + * | | + * | RMI4 Bus | RMI Bus Layer + * | (this file) | + * *--|-----|------|--------------|---------* + * | | | | + * | | | | + * +-----+-----+-------+--------------------+ + * | I2C | SPI | SMBus | etc. | Physical Layer + * +-----+-----+-------+--------------------+ + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +static const char busname[] = "rmi"; + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/hrtimer.h> +#include <linux/list.h> +#include <linux/miscdevice.h> +#include <linux/fs.h> +#include <linux/delay.h> +#include <linux/uaccess.h> +#include <linux/slab.h> + +#include "rmi_drvr.h" +#include "rmi.h" +#include "rmi_bus.h" +#include "rmi_sensor.h" +#include "rmi_function.h" + +/* list of physical drivers - i2c, spi, etc. */ +static LIST_HEAD(phys_drivers); +static DEFINE_MUTEX(phys_drivers_mutex); + +/* list of sensors found on a physical bus (i2c, smi, etc.)*/ +static LIST_HEAD(sensor_drivers); +static DEFINE_MUTEX(sensor_drivers_mutex); +static LIST_HEAD(sensor_devices); +static DEFINE_MUTEX(sensor_devices_mutex); + +#define PDT_START_SCAN_LOCATION 0x00E9 +#define PDT_END_SCAN_LOCATION 0x0005 +#define PDT_ENTRY_SIZE 0x0006 + +/* definitions for rmi bus */ +struct device rmi_bus_device; + +struct bus_type rmi_bus_type; +EXPORT_SYMBOL(rmi_bus_type); + + +/* + * This method is called, perhaps multiple times, whenever a new device or driver + * is added for this bus. It should return a nonzero value if the given device can be + * handled by the given driver. This function must be handled at the bus level, + * because that is where the proper logic exists; the core kernel cannot know how + * to match devices and drivers for every possible bus type + * The match function does a comparison between the hardware ID provided by + * the device itself and the IDs supported by the driver. + * + */ +static int rmi_bus_match(struct device *dev, struct device_driver *driver) +{ + printk(KERN_DEBUG "%s: Matching %s for rmi bus.\n", __func__, dev->bus->name); + return !strncmp(dev->bus->name, driver->name, strlen(driver->name)); +} + +/** Stub for now. + */ +static int rmi_bus_suspend(struct device *dev, pm_message_t state) +{ + printk(KERN_INFO "%s: RMI bus suspending.", __func__); + return 0; +} + +/** Stub for now. + */ +static int rmi_bus_resume(struct device *dev) +{ + printk(KERN_INFO "%s: RMI bus resuming.", __func__); + return 0; +} + +/* + * This method is called, whenever a new device is added for this bus. + * It will scan the devices PDT to get the function $01 query, control, + * command and data regsiters so that it can create a function $01 (sensor) + * device for the new physical device. It also caches the PDT for later use by + * other functions that are created for the device. For example, if a function + * $11 is found it will need the query, control, command and data register + * addresses for that function. The new function could re-scan the PDT but + * since it is being done here we can cache it and keep it around. + * + * TODO: If the device is reset or some action takes place that would invalidate + * the PDT - such as a reflash of the firmware - then the device should be re-added + * to the bus and the PDT re-scanned and cached. + * + */ +int rmi_register_sensors(struct rmi_phys_driver *rpd) +{ + int i; + struct rmi_sensor_device *rmi_sensor_dev; + struct rmi_function_info *rfi; + struct rmi_function_descriptor rmi_fd; + int retval; + static int index; + + /* Make sure we have a read, write, read_multiple, write_multiple + function pointers from whatever physical layer the sensor is on. + */ + if (!rpd->name) { + printk(KERN_ERR "%s: Physical driver must specify a name\n", + __func__); + return -EINVAL; + } + if (!rpd->write) { + printk(KERN_ERR + "%s: Physical driver %s must specify a writer.\n", + __func__, rpd->name); + return -EINVAL; + } + if (!rpd->read) { + printk(KERN_ERR + "%s: Physical driver %s must specify a reader.\n", + __func__, rpd->name); + return -EINVAL; + } + if (!rpd->write_multiple) { + printk(KERN_ERR "%s: Physical driver %s must specify a " + "multiple writer.\n", + __func__, rpd->name); + return -EINVAL; + } + if (!rpd->read_multiple) { + printk(KERN_ERR "%s: Physical driver %s must specify a " + "multiple reader.\n", + __func__, rpd->name); + return -EINVAL; + } + + /* Get some information from the device */ + printk(KERN_INFO "%s: Identifying sensors by presence of F01...\n", __func__); + + rmi_sensor_dev = NULL; + + /* Read the Page Descriptor Table to determine what functions + are present */ + for (i = PDT_START_SCAN_LOCATION; /* Register the rmi sensor driver */ + i >= PDT_END_SCAN_LOCATION; + i -= PDT_ENTRY_SIZE) { + retval = rpd->read_multiple(rpd, i, (char *)&rmi_fd, + sizeof(rmi_fd)); + if (!retval) { + rfi = NULL; + + if (rmi_fd.functionNum != 0x00 && rmi_fd.functionNum != 0xff) { + if ((rmi_fd.functionNum & 0xff) == 0x01) { + printk(KERN_INFO "%s: F01 Found - RMI Device Control\n", __func__); + + /* This appears to be a valid device, so create a sensor + * device and sensor driver for it. */ + rmi_sensor_dev = kzalloc(sizeof(*rmi_sensor_dev), GFP_KERNEL); + if (!rmi_sensor_dev) { + printk(KERN_ERR "%s: Error allocating memory for rmi_sensor_device\n", __func__); + return -ENOMEM; + } + rmi_sensor_dev->dev.bus = &rmi_bus_type; + + retval = rmi_sensor_register_device(rmi_sensor_dev, index++); + if (retval < 0) { + printk(KERN_ERR "%s: Error %d registering sensor device\n", __func__, retval); + goto exit_fail; + } + + rmi_sensor_dev->driver = kzalloc(sizeof(struct rmi_sensor_driver), GFP_KERNEL); + if (!rmi_sensor_dev->driver) { + printk(KERN_ERR "%s: Error allocating memory for rmi_sensor_driver\n", __func__); + return -ENOMEM; + } + rmi_sensor_dev->driver->sensor_device = rmi_sensor_dev; + rmi_sensor_dev->driver->polling_required = rpd->polling_required; + rmi_sensor_dev->driver->rpd = rpd; + INIT_LIST_HEAD(&rmi_sensor_dev->driver->functions); + + retval = rmi_sensor_register_driver(rmi_sensor_dev->driver); + if (retval < 0) { + printk(KERN_ERR "%s: Error %d registering sensor driver\n", __func__, retval); + goto exit_fail; + } + + /* link the attention fn in the rpd to the sensor attn fn */ + printk(KERN_DEBUG "%s: linking sensor driver attention fn to rmi_phys_driver attention fn.\n", __func__); + rpd->sensor = rmi_sensor_dev->driver; + rpd->attention = rmi_sensor_dev->driver->attention; + + /* Add it into the list of sensors on the rmi bus */ + mutex_lock(&sensor_devices_mutex); + list_add_tail(&rmi_sensor_dev->sensors, &sensor_devices); + mutex_unlock(&sensor_devices_mutex); + + /* All done with this sensor, fall out of PDT scan loop. */ + break; + } else { + /* Just print out the function found for now */ + printk(KERN_INFO "%s: Found Function %02x - Ignored.\n", __func__, rmi_fd.functionNum & 0xff); + } + } else { + /* A zero or 0xff in the function number + signals the end of the PDT */ + pr_debug("%s: Found End of PDT\n", + __func__); + break; + } + } else { + /* failed to read next PDT entry - end PDT + scan - this may result in an incomplete set + of recognized functions - should probably + return an error but the driver may still be + viable for diagnostics and debugging so let's + let it continue. */ + printk(KERN_ERR "%s: Read Error %d when reading next PDT entry - " + "ending PDT scan.\n", + __func__, retval); + break; + } + } + + /* If we actually found a sensor, keep it around. */ + if (rmi_sensor_dev) { + /* Add physical driver struct to list */ + mutex_lock(&phys_drivers_mutex); + list_add_tail(&rpd->drivers, &phys_drivers); + mutex_unlock(&phys_drivers_mutex); + } + + printk(KERN_DEBUG "%s: Registered sensor drivers.\n", __func__); + + return 0; + +exit_fail: + return retval; +} +EXPORT_SYMBOL(rmi_register_sensors); + +int rmi_unregister_sensors(struct rmi_phys_driver *rpd) +{ + if (rpd->sensor) { + printk(KERN_WARNING "%s: WARNING: unregister of %s while %s still attached\n", + __func__, rpd->name, rpd->sensor->drv.name); + } + + pr_debug("%s: Unregistering sensor drivers %s\n", __func__, rpd->name); + + mutex_lock(&sensor_drivers_mutex); + list_del(&rpd->sensor->sensor_drivers); + mutex_unlock(&sensor_drivers_mutex); + + return 0; +} +EXPORT_SYMBOL(rmi_unregister_sensors); + + +static void rmi_bus_dev_release(struct device *dev) +{ + printk(KERN_DEBUG "rmi bus device release\n"); +} + + +int rmi_register_bus_device(struct device *rmibusdev) +{ + printk(KERN_DEBUG "%s: Registering RMI4 bus device.\n", __func__); + + /* Here, we simply fill in some of the embedded device structure fields + (which individual drivers should not need to know about), and register + the device with the driver core. */ + + rmibusdev->bus = &rmi_bus_type; + rmibusdev->parent = &rmi_bus_device; + rmibusdev->release = rmi_bus_dev_release; + dev_set_name(rmibusdev, "rmi"); + + /* If we wanted to add bus-specific attributes to the device, we could do so here.*/ + + return device_register(rmibusdev); +} +EXPORT_SYMBOL(rmi_register_bus_device); + +void rmi_unregister_bus_device(struct device *rmibusdev) +{ + printk(KERN_DEBUG "%s: Unregistering bus device.\n", __func__); + + device_unregister(rmibusdev); +} +EXPORT_SYMBOL(rmi_unregister_bus_device); + +static int __init rmi_bus_init(void) +{ + int status; + + status = 0; + + printk(KERN_INFO "%s: RMI Bus Driver Init\n", __func__); + + /* Register the rmi bus */ + rmi_bus_type.name = busname; + rmi_bus_type.match = rmi_bus_match; + rmi_bus_type.suspend = rmi_bus_suspend; + rmi_bus_type.resume = rmi_bus_resume; + status = bus_register(&rmi_bus_type); + if (status < 0) { + printk(KERN_ERR "%s: Error %d registering the rmi bus\n", __func__, status); + goto err_exit; + } + printk(KERN_DEBUG "%s: registered bus.", __func__); + +#if 0 + /** This doesn't seem to be required any more. It worked OK in Froyo, + * but breaks in Gingerbread */ + /* Register the rmi bus device - "rmi". There is only one rmi bus device. */ + status = rmi_register_bus_device(&rmi_bus_device); + if (status < 0) { + printk(KERN_ERR "%s: Error %d registering rmi bus device\n", __func__, status); + bus_unregister(&rmi_bus_type); + goto err_exit; + } + printk(KERN_DEBUG "%s: Registered bus device.", __func__); +#endif + + return 0; +err_exit: + return status; +} + +static void __exit rmi_bus_exit(void) +{ + printk(KERN_DEBUG "%s: RMI Bus Driver Exit\n", __func__); + + /* Unregister the rmi bus device - "rmi". There is only one rmi bus device. */ + rmi_unregister_bus_device(&rmi_bus_device); + + /* Unregister the rmi bus */ + bus_unregister(&rmi_bus_type); +} + + +module_init(rmi_bus_init); +module_exit(rmi_bus_exit); + +MODULE_AUTHOR("Synaptics, Inc."); +MODULE_DESCRIPTION("RMI4 Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/rmi_bus.h b/drivers/input/touchscreen/rmi_bus.h new file mode 100755 index 0000000..70c6b68 --- /dev/null +++ b/drivers/input/touchscreen/rmi_bus.h @@ -0,0 +1,33 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) - RMI Bus Module Header. + * Copyright (C) 2007 - 2010, Synaptics Incorporated + * + */ +/* + * + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#ifndef _RMI_BUS_H +#define _RMI_BUS_H + + +extern struct bus_type rmi_bus_type; + +#endif + diff --git a/drivers/input/touchscreen/rmi_core.c b/drivers/input/touchscreen/rmi_core.c deleted file mode 100644 index d25f982..0000000 --- a/drivers/input/touchscreen/rmi_core.c +++ /dev/null @@ -1,708 +0,0 @@ -/** - * Synaptics Register Mapped Interface (RMI4) Data Layer Driver. - * Copyright (C) 2007 - 2010, Synaptics Incorporated - * - * - * This protocol is layered as follows. - * - * - * +----------------------------------------+ - * | | - * | Application | - * | | - * +----------------------------------------+ - * | | - * | RMI4 Driver | Data Layer (THIS DRIVER) - * | (this file) | - * +-----+-----+-------+----------+---------+ - * | I2C | SPI | SMBus | etc. | Physical Layer - * +-----+-----+-------+----------+---------+ - * - * Each of the physical layer drivers is contained in a file called - * rmi_phys_xxx.c. Someone compiling the kernel enables CONFIG_RMI and then - * one or more CONFIG_RMI_xxx options in the .config file. For example, when - * CONFIG_RMI_I2C=m is enabled, a rmi.ko and a rmi_phys_i2c.ko will be - * compiled. rmi_phys_i2c.ko will depend on rmi.ko, so when rmi_phys_i2c.ko - * is loaded, rmi.ko will automatically be loaded. Each of the physical - * layer drivers is a platform_driver that may handle suspend/resume, etc., - * so this driver does not do so. - * - * The register paradigm of RMI is a "pull" rather than "push" data flow. - * As such, it is the application driver that needs to implement either - * polling or interrupt driven, and the physical driver merely handles - * the register accesses. For interrupt driven, the application registers - * an "attention" function that may be called in interrupt context by the - * physical driver if an attention interrupt is available. The physical - * driver notifies the application through the polling_required variable, - * and the application driver must do one or the other based on this variable. - * - * At this point in time, there can only be one application driver per - * physical driver. - * - */ -/* - * This file is licensed under the GPL2 license. - * - *############################################################################# - * GPL - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - *############################################################################# - */ - -static const char drvname[] = "rmi4_ts"; - -#include <linux/kernel.h> -#include <linux/device.h> -#include <linux/hrtimer.h> -#include <linux/miscdevice.h> -#include <linux/fs.h> -#include <linux/delay.h> -#include <linux/uaccess.h> -#include <linux/slab.h> - -#include "rmi.h" -#include "rmi_core.h" -#include "rmi_functions.h" - -/* we need these to control the device and query interrupts */ -unsigned short fn01QueryBaseAddr; /* RMI4 device control */ -EXPORT_SYMBOL(fn01QueryBaseAddr); -unsigned short fn01ControlBaseAddr; -EXPORT_SYMBOL(fn01ControlBaseAddr); -unsigned int interruptRegisterCount; -EXPORT_SYMBOL(interruptRegisterCount); - -#define PDT_START_SCAN_LOCATION 0x00E9 -#define PDT_END_SCAN_LOCATION 0x000A -#define PDT_ENTRY_SIZE 0x0006 - -static LIST_HEAD(phys_drivers); -static DEFINE_MUTEX(phys_drivers_mutex); -static LIST_HEAD(app_drivers); -static DEFINE_MUTEX(app_drivers_mutex); -static DEFINE_MUTEX(rfi_mutex); -static LIST_HEAD(fns_list); -static DEFINE_MUTEX(fns_mutex); - - -#if RMI_ALLOC_STATS -int appallocsrmi; -EXPORT_SYMBOL(appallocsrmi); -int rfiallocsrmi; -EXPORT_SYMBOL(rfiallocsrmi); -int fnallocsrmi; -EXPORT_SYMBOL(fnallocsrmi); -#endif - -/* NOTE: Developer - add in any new RMI4 fn data info - function number - and ptrs to report, config, init and detect functions. This data is - used to point to the functions that need to be called to config, init, - detect and report data for the new RMI4 function. These only need to - be added for RMI4 functions that support data source - like 2D sensors, - buttons, LEDs, GPIOs, etc. Refer to the RMI4 specification for - information on these RMI4 functions and what data they report. -*/ - -static struct rmi_functions_data - rmi4_supported_data_src_functions[rmi4_num_supported_data_src_fns] = { - /* Fn $11 */ - {0x11, FN_11_report, FN_11_config, FN_11_init, FN_11_detect}, - /* Fn $19 */ - /* {0x19, FN_19_report, FN_19_config, FN_19_init, FN_19_detect), */ -}; - - -int rmi_read(struct rmi_application *app, unsigned short address, char *dest) -{ - struct rmi_phys_driver *rpd = app->rpd; - if (!app->rpd) - return -ENODEV; - return rpd->read(rpd, address, dest); -} -EXPORT_SYMBOL(rmi_read); - -int rmi_write(struct rmi_application *app, unsigned short address, - unsigned char data) -{ - struct rmi_phys_driver *rpd = app->rpd; - if (!app->rpd) - return -ENODEV; - return rpd->write(rpd, address, data); -} -EXPORT_SYMBOL(rmi_write); - -int rmi_read_multiple(struct rmi_application *app, unsigned short address, - char *dest, int length) -{ - struct rmi_phys_driver *rpd = app->rpd; - if (!app->rpd) - return -ENODEV; - return rpd->read_multiple(rpd, address, dest, length); -} -EXPORT_SYMBOL(rmi_read_multiple); - -int rmi_write_multiple(struct rmi_application *app, unsigned short address, - unsigned char *data, int length) -{ - struct rmi_phys_driver *rpd = app->rpd; - if (!app->rpd) - return -ENODEV; - return rpd->write_multiple(rpd, address, data, length); -} -EXPORT_SYMBOL(rmi_write_multiple); - -bool rmi_polling_required(struct rmi_application *app) -{ - return app->polling_required; -} -EXPORT_SYMBOL(rmi_polling_required); - -/* This function searches for a match between an app driver and physical - * driver and binds them together. - */ -static void match_and_bind(struct rmi_application *app, - struct rmi_phys_driver *rpd) -{ - app->polling_required = rpd->polling_required; - - if (app->probe(app, &rpd->rmi)) { - /* Found a match, bind them together. */ - /* The try_module_get() makes sure that the physical - * driver cannot be unloaded while a app driver is - * using it. - */ - if (try_module_get(rpd->module)) { - app->rpd = rpd; - rpd->app = app; - printk(KERN_INFO "%s: %s is %s bound to %s\n", - __func__, drvname, app->name, rpd->name); - rpd->attention = app->attention; - app->config(app); - } - } else { - app->polling_required = false; - } -} - -/* This function is here to provide a way for external modules to access the - * functions list. It will try to find a matching function base on the passed - * in RMI4 function number and return the pointer to the struct rmi_functions - * if a match is found or NULL if not found. - */ -struct rmi_functions *rmi_find_function(int functionNum) -{ - struct rmi_functions *fn; - bool found = false; - - list_for_each_entry(fn, &fns_list, link) { - if (functionNum == fn->functionNum) { - found = true; - break; - } - } - - if (!found) - return NULL; - else - return fn; -} -EXPORT_SYMBOL(rmi_find_function); - -/* This function calls init for all of the functions on the functions list and - * passes in the input_dev ptr so that each fn can store it for later use. - */ -int rmi_functions_init(struct input_dev *inputdev) -{ - int retval = 0; - struct rmi_functions *fn; - - /* Set input device specific params for each data source...*/ - list_for_each_entry(fn, &fns_list, link) { - if (fn->init) { - /* store the input_dev ptr for use later */ - fn->input = inputdev; - retval = fn->init(fn->input); - } else { - /* the developer did not add in the pointer to the init - function into rmi4_supported_data_src_functions */ - printk(KERN_ERR - "%s: No init function for function 0x%x\n", - __func__, fn->functionNum); - } - } - - return retval; -} -EXPORT_SYMBOL(rmi_functions_init); - -int rmi_register_phys_driver(struct rmi_phys_driver *rpd) -{ - struct rmi_application *app; - int i; - unsigned char std_queries[21]; - unsigned char interruptCount; - struct rmi_function_info *rfi; - struct rmi_function_descriptor rmi_fd; - struct rmi_functions *fn; - bool found; - int retval; - - if (!rpd->name) { - printk(KERN_ERR "%s: %s: Physical driver must specify a name\n", - __func__, drvname); - return -EINVAL; - } - if (!rpd->write) { - printk(KERN_ERR - "%s: %s: Physical driver %s must specify a writer.\n", - __func__, drvname, rpd->name); - return -EINVAL; - } - if (!rpd->read) { - printk(KERN_ERR - "%s: %s: Physical driver %s must specify a reader.\n", - __func__, drvname, rpd->name); - return -EINVAL; - } - if (!rpd->write_multiple) { - printk(KERN_ERR "%s: %s: Physical driver %s must specify a " - "multiple writer.\n", - __func__, drvname, rpd->name); - return -EINVAL; - } - if (!rpd->read_multiple) { - printk(KERN_ERR "%s: %s: Physical driver %s must specify a " - "multiple reader.\n", - __func__, drvname, rpd->name); - return -EINVAL; - } - if (!rpd->module) { - printk(KERN_ERR - "%s: %s: Physical driver %s must specify a module.\n", - __func__, drvname, rpd->name); - return -EINVAL; - } - - pr_debug("%s: %s: Registering phys driver %s\n", - __func__, drvname, rpd->name); - - rpd->attention = 0; - - /* Get some information from the device */ - { - pr_debug("%s: Functions:\n", __func__); - - interruptCount = 0; - - /* init the physical drivers RMI module - info list of functions */ - INIT_LIST_HEAD(&rpd->rmi.functions); - - /* Read the Page Descriptor Table to determine what functions - are present */ - for (i = PDT_START_SCAN_LOCATION; - i > PDT_END_SCAN_LOCATION; - i -= PDT_ENTRY_SIZE) { - retval = rpd->read_multiple(rpd, i, (char *)&rmi_fd, - sizeof(rmi_fd)); - if (!retval) { - rfi = NULL; - - if (rmi_fd.functionNum != 0x00 && rmi_fd.functionNum != 0xff) { - switch (rmi_fd.functionNum & 0xff) { - case 0x01: - pr_debug("%s: Fn $01 Found - RMI Device Control\n", __func__); - /* Save Fn $01 query and control base addresses since - we'll need them later to get/set properties and check - interrupts. There is only one Fn $01 for the device - that is used to control and query device specific info - so we only need to save it globally here for later use. - */ - fn01QueryBaseAddr = - rmi_fd.queryBaseAddr; - fn01ControlBaseAddr = - rmi_fd.controlBaseAddr; - break; - - default: - if (rmi_fd.interruptSrcCnt) { - rfi = kmalloc(sizeof(*rfi), GFP_KERNEL); - - if (!rfi) { - printk(KERN_ERR "%s: %s: could not allocate memory for function 0x%x\n", - __func__, drvname, rmi_fd.functionNum); - retval = -ENOMEM; - goto exit_fail; - } else { - INC_ALLOC_STAT(rfi); - - /* Get the ptr to the detect function based on - the function number */ - found = false; - list_for_each_entry(fn, &fns_list, link) { - /* check if function number matches - if so - call that detect function */ - if (fn->functionNum == rmi_fd.functionNum) { - found = true; - fn->detect(rpd->app, rfi, &rmi_fd, - interruptCount); - } - } - - if (!found) { - printk(KERN_ERR "%s: %s: could not find support for function 0x%x\n", - __func__, drvname, rmi_fd.functionNum); - } - } - } else { - printk(KERN_INFO "%s: %s: Found Function %02x - Ignored.\n", __func__, drvname, rmi_fd.functionNum & 0xff); - } - break; - } - - /* bump interrupt count for - next iteration */ - interruptCount += - (rmi_fd.interruptSrcCnt & 0x7); - - /* We only want to add functions - to the list that have - data associated with them. */ - if (rfi && rmi_fd.interruptSrcCnt) { - pr_debug("%s: Adding function " - "0x%x with %d sources.\n", - drvname, rfi->functionNum, - rfi->numSources); - - /* link this function info to - the RMI module infos list - of functions */ - mutex_lock(&rfi_mutex); - list_add_tail(&rfi->link, - &rpd->rmi.functions); - mutex_unlock(&rfi_mutex); - } - } else { - /* A zero in the function number - signals the end of the PDT */ - pr_debug("%s: Found End of PDT\n", - __func__); - break; - } - } else { - /* failed to read next PDT entry - end PDT - scan - this may result in an incomplete set - of recognized functions - should probably - return an error but the driver may still be - viable for diagnostics and debugging so let's - let it continue. */ - printk(KERN_ERR "%s: %s: Read Error 0x%x when " - "reading next PDT entry - " - "ending PDT scan.\n", - __func__, drvname, retval); - break; - } - } - - /* calculate the interrupt register count - used in the - ISR to read the correct number of interrupt registers */ - interruptRegisterCount = (interruptCount + 7) / 8; - - /* Function $01 will be used to query the product properties, - and product ID so we had to read the PDT above first to get - the Fn $01 query address and prior to filling in the product - info. NOTE: Even an unflashed device will still have FN $01. - */ - - /* Load up the standard queries and get the RMI4 module info */ - retval = rpd->read_multiple(rpd, fn01QueryBaseAddr, std_queries, - sizeof(std_queries)); - if (retval) { - printk(KERN_ERR "%s: %s: Failed reading queries\n", - __func__, drvname); - retval = -EIO; - goto exit_fail; - } - - /* Currently supported RMI version is 4.0 */ - rpd->rmi.rmi_maj_ver = 4; - rpd->rmi.rmi_min_ver = 0; - - /* get manufacturer id, properties, product info, - date code, tester id, serial num and product id (name) */ - rpd->rmi.mfgid = std_queries[0]; - rpd->rmi.properties = std_queries[1]; - - rpd->rmi.prod_info[0] = std_queries[2]; - rpd->rmi.prod_info[1] = std_queries[3]; - - /* year - 2001-2032 */ - rpd->rmi.date_code[0] = std_queries[4] & 0x1f; - /* month - 1-12 */ - rpd->rmi.date_code[1] = std_queries[5] & 0x0f; - /* day - 1-31 */ - rpd->rmi.date_code[2] = std_queries[6] & 0x1f; - - rpd->rmi.tester_id = ((std_queries[7] & 0x7f) << 8) | - (std_queries[8] & 0x7f); - - rpd->rmi.serial_num = ((std_queries[9] & 0x7f) << 8) | - (std_queries[10] & 0x7f); - - memcpy(rpd->rmi.prod_id, &std_queries[11], 10); - rpd->rmi.prod_id[10] = 0; - - pr_debug("%s: RMI Protocol: %d.%d\n", - __func__, rpd->rmi.rmi_maj_ver, rpd->rmi.rmi_min_ver); - pr_debug("%s: Manufacturer: %d", __func__, - rpd->rmi.mfgid); - - if (rpd->rmi.mfgid == 1) - pr_debug(" (Synaptics)"); - pr_debug("\n"); - - pr_debug("%s: Properties: 0x%x\n", - __func__, rpd->rmi.properties); - pr_debug("%s: Product Info: 0x%x 0x%x\n", - __func__, rpd->rmi.prod_info[0], rpd->rmi.prod_info[1]); - pr_debug("%s: Date Code: Year : %d Month: %d Day: %d\n", - __func__, rpd->rmi.date_code[0], rpd->rmi.date_code[1], - rpd->rmi.date_code[2]); - pr_debug("%s: Tester ID: %d\n", __func__, rpd->rmi.tester_id); - pr_debug("%s: Serial Number: 0x%x\n", - __func__, rpd->rmi.serial_num); - pr_debug("%s: Product ID: %s\n", __func__, rpd->rmi.prod_id); - } - - /* Add physical driver struct to list */ - mutex_lock(&phys_drivers_mutex); - list_add_tail(&rpd->drivers, &phys_drivers); - mutex_unlock(&phys_drivers_mutex); - - /* Do a probe for any applications that are registered and bind this - physical driver to them */ - list_for_each_entry(app, &app_drivers, apps) { - /* Only check apps that are not already bound */ - if (!app->rpd) - match_and_bind(app, rpd); - } - - pr_debug("%s: Registered phys driver %s\n", __func__, rpd->name); - - return 0; - -exit_fail: - return retval; -} -EXPORT_SYMBOL(rmi_register_phys_driver); - -int rmi_unregister_phys_driver(struct rmi_phys_driver *rpd) -{ - if (rpd->app) { - printk(KERN_WARNING "%s: %s: WARNING: unregister of %s while %s still attached\n", - __func__, drvname, rpd->name, rpd->app->name); - } - - pr_debug("%s: Unregistering phys driver %s\n", __func__, rpd->name); - mutex_lock(&phys_drivers_mutex); - list_del(&rpd->drivers); - mutex_unlock(&phys_drivers_mutex); - - return 0; -} -EXPORT_SYMBOL(rmi_unregister_phys_driver); - -struct rmi_application *rmi_register_application(const char *name, - void (*attention)(struct rmi_phys_driver *pd, int instance), - int (*probe)(struct rmi_application *app, - const struct rmi_module_info *rmi), - void (*config)(struct rmi_application *app)) -{ - struct rmi_application *app; - struct rmi_phys_driver *rpd; - - if (!name) { - printk(KERN_ERR "%s: %s: Application driver must specify a name\n", - __func__, drvname); - return 0; - } - - if (!attention) { - printk(KERN_ERR "%s: %s: Application driver %s must specify attention notifier.\n", - __func__, drvname, name); - return 0; - } - - if (!probe) { - printk(KERN_ERR "%s: %s: Application driver %s must specify a probe function.\n", - __func__, drvname, name); - return 0; - } - - if (!config) { - printk(KERN_ERR "%s: %s: Application driver %s must specify a config function.\n", - __func__, drvname, name); - return 0; - } - - pr_debug("%s: Registering app driver %s\n", __func__, name); - - app = kmalloc(sizeof(*app), GFP_KERNEL); - if (!app) { - printk(KERN_ERR "%s: %s: Out of memory\n", __func__, drvname); - return 0; - } - INC_ALLOC_STAT(app); - - app->name = name; - app->attention = attention; - app->probe = probe; - app->config = config; - app->rpd = 0; - - mutex_lock(&app_drivers_mutex); - list_add_tail(&app->apps, &app_drivers); - mutex_unlock(&app_drivers_mutex); - - /* Probe for any matches with physical drivers and bind them. */ - list_for_each_entry(rpd, &phys_drivers, drivers) { - if (!rpd->app) - match_and_bind(app, rpd); - } - - pr_debug("%s: Registered app driver %s (%p)\n", __func__, name, app); - - return app; -} -EXPORT_SYMBOL(rmi_register_application); - -void rmi_unregister_application(struct rmi_application *app) -{ - struct rmi_application *tmp; - int found = 0; - - if (!app) - return; - - pr_debug("%s: Unregistering app driver %s (%p)\n", - __func__, app->name, app); - - list_for_each_entry(tmp, &app_drivers, apps) { - if (tmp == app) { - found = 1; - break; - } - } - - if (!found) { - printk(KERN_ERR "%s: %s: Removing rmi application %s: not found\n", - __func__, drvname, app->name); - return; - } - - if (app->rpd) { - /* Release the phys driver so it can be unloaded. */ - module_put(app->rpd->module); - app->rpd->app = 0; - } - - list_del(&app->apps); - kfree(app); - DEC_ALLOC_STAT(app); - - pr_debug("%s: Unregistered app driver %p\n", __func__, app); -} -EXPORT_SYMBOL(rmi_unregister_application); - -static int __init rmi_core_init(void) -{ - int i; - struct rmi_functions_data *rmi4_fn; - - pr_debug("%s: Register Mapped Interface Data Layer Driver\n", __func__); - - /* Initialize global list of RMI4 Functions that have data sources. - We need to add all new functions to this list so that we will have - pointers to the associated functions for init, config, report and - detect. See rmi.h for more details. The developer will add a new - RMI4 function number in the array in rmi.h, then add a new file to - the build (called rmi_function_XX.c where XX is the hex number for - the added RMI4 function). The rest should be automatic. - */ - - /* for each function number defined in rmi.h creat a new rmi_function - struct and initialize the pointers to the servicing functions and then - add it into the global list for function support. - */ - for (i = 0; i < rmi4_num_supported_data_src_fns; i++) { - /* Add new rmi4 function struct to list */ - struct rmi_functions *fn = kmalloc(sizeof(*fn), GFP_KERNEL); - if (!fn) { - printk(KERN_ERR "%s: %s: could not allocate memory " - "for rmi_function struct for function 0x%x\n", - __func__, drvname, - rmi4_supported_data_src_functions[i].functionNumber); - return -ENOMEM; - } else { - INC_ALLOC_STAT(fn); - - rmi4_fn = &rmi4_supported_data_src_functions[i]; - fn->functionNum = rmi4_fn->functionNumber; - /* Fill in ptrs to functions. The functions are - linked in from a file called rmi_function_xx.c - where xx is the hex number of the RMI4 function - from the RMI4 spec. Also, the function prototypes - need to be added to rmi_function_xx.h - also where - xx is the hex number of the RMI4 function. So - that you don't get compile errors and that new - header needs to be included in the rmi.h header file. - */ - fn->report = rmi4_fn->reportFn; - fn->config = rmi4_fn->configFn; - fn->init = rmi4_fn->initFn; - fn->detect = rmi4_fn->detectFn; - - /* Add the new fn to the global list */ - mutex_lock(&fns_mutex); - list_add_tail(&fn->link, &fns_list); - mutex_unlock(&fns_mutex); - } - } - - return 0; -} - -static void __exit rmi_core_exit(void) -{ - struct rmi_application *app, *apptmp; - - /* These lists should be empty, but just in case . . . */ - mutex_lock(&app_drivers_mutex); - list_for_each_entry_safe(app, apptmp, &app_drivers, apps) { - list_del(&app->apps); - kfree(app); - DEC_ALLOC_STAT(app); - } - mutex_unlock(&app_drivers_mutex); - - CHECK_ALLOC_STAT(app); -} - -/* TODO: Investigate implimenting "rmi" bus and device and driver on that bus - as per Documentation/driver-model/bus.txt */ - -module_init(rmi_core_init); -module_exit(rmi_core_exit); - -MODULE_AUTHOR("Synaptics, Inc."); -MODULE_DESCRIPTION("RMI4 Driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/rmi_core.h b/drivers/input/touchscreen/rmi_core.h deleted file mode 100644 index fc93aed..0000000 --- a/drivers/input/touchscreen/rmi_core.h +++ /dev/null @@ -1,57 +0,0 @@ -/** - * - * Synaptics Register Mapped Interface (RMI4) Data Layer Core Header. - * Copyright (c) 2007 - 2010, Synaptics Incorporated. - * - */ -/* - * - * This file is licensed under the GPL2 license. - * - *############################################################################# - * GPL - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - *############################################################################# - */ - -#ifndef _RMI_CORE_H -#define _RMI_CORE_H - -struct rmi_application { - const char *name; - void (*attention)(struct rmi_phys_driver *pd, int instance); - /* Probe Function - * This function is called to give the application layer an - * opportunity to claim an RMI device. The application layer cannot - * read RMI registers at this point. Defer that to the config - * function call which occurs immediately after a successful probe. - */ - int (*probe)(struct rmi_application *app, - const struct rmi_module_info *rmi); - /* Config Function - * This function is called after a successful probe. It gives the - * application driver an opportunity to query and/or configure an RMI - * device before data starts flowing. - */ - void (*config)(struct rmi_application *app); - /* Standard kernel linked list implementation. - * Documentation on how to use it can be found at - * http://isis.poly.edu/kulesh/stuff/src/klist/. - */ - struct list_head apps; - struct rmi_phys_driver *rpd; - bool polling_required; - struct hrtimer timer; - struct work_struct work; -}; - -#endif diff --git a/drivers/input/touchscreen/rmi_drvr.h b/drivers/input/touchscreen/rmi_drvr.h new file mode 100755 index 0000000..fb251c5 --- /dev/null +++ b/drivers/input/touchscreen/rmi_drvr.h @@ -0,0 +1,93 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) RMI Driver Header File. + * Copyright (c) 2007 - 2011, Synaptics Incorporated + * + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#include "rmi.h" + +#ifndef _RMI_DRVR_H +#define _RMI_DRVR_H + +/* RMI4 Protocol Support + */ + +struct rmi_phys_driver { + char *name; + int (*write)(struct rmi_phys_driver *physdrvr, unsigned short address, + char data); + int (*read)(struct rmi_phys_driver *physdrvr, unsigned short address, + char *buffer); + int (*write_multiple)(struct rmi_phys_driver *physdrvr, + unsigned short address, char *buffer, int length); + int (*read_multiple)(struct rmi_phys_driver *physdrvr, unsigned short address, + char *buffer, int length); + void (*attention)(struct rmi_phys_driver *physdrvr, int instance); + bool polling_required; + int irq; + + /* Standard kernel linked list implementation. + * Documentation on how to use it can be found at + * http://isis.poly.edu/kulesh/stuff/src/klist/. + */ + struct list_head drivers; + struct rmi_sensor_driver *sensor; + struct module *module; +}; + +int rmi_read(struct rmi_sensor_driver *sensor, unsigned short address, char *dest); +int rmi_write(struct rmi_sensor_driver *sensor, unsigned short address, + unsigned char data); +int rmi_read_multiple(struct rmi_sensor_driver *sensor, unsigned short address, + char *dest, int length); +int rmi_write_multiple(struct rmi_sensor_driver *sensor, unsigned short address, + unsigned char *data, int length); +int rmi_register_sensors(struct rmi_phys_driver *physdrvr); +int rmi_unregister_sensors(struct rmi_phys_driver *physdrvr); + +/* Set this to 1 to turn on code used in detecting buffer leaks. */ +#define RMI_ALLOC_STATS 1 + +#if RMI_ALLOC_STATS +extern int appallocsrmi; +extern int rfiallocsrmi; +extern int fnallocsrmi; + +#define INC_ALLOC_STAT(X) (X##allocsrmi++) +#define DEC_ALLOC_STAT(X) \ + do { \ + if (X##allocsrmi) X##allocsrmi--; \ + else printk(KERN_DEBUG "Too many " #X " frees\n"); \ + } while (0) +#define CHECK_ALLOC_STAT(X) \ + do { \ + if (X##allocsrmi) \ + printk(KERN_DEBUG "Left over " #X " buffers: %d\n", \ + X##allocsrmi); \ + } while (0) +#else +#define INC_ALLOC_STAT(X) do { } while (0) +#define DEC_ALLOC_STAT(X) do { } while (0) +#define CHECK_ALLOC_STAT(X) do { } while (0) +#endif + +#endif diff --git a/drivers/input/touchscreen/rmi_f01.c b/drivers/input/touchscreen/rmi_f01.c new file mode 100755 index 0000000..ddf6cd3 --- /dev/null +++ b/drivers/input/touchscreen/rmi_f01.c @@ -0,0 +1,245 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) Function $01 support for sensor + * control and configuration. + * + * Copyright (c) 2007 - 2011, Synaptics Incorporated + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/input.h> +#include <linux/slab.h> +#include <linux/param.h> + +#include "rmi.h" +#include "rmi_drvr.h" +#include "rmi_bus.h" +#include "rmi_sensor.h" +#include "rmi_function.h" +#include "rmi_f01.h" + + +#define RMI_REPORT_RATE_80 0 +#define RMI_REPORT_RATE_40 (1 << 6) + +/** Context data for each F01 we find. + */ +struct f01_instance_data { + struct rmi_F01_control *controlRegisters; + struct rmi_F01_data *dataRegisters; + struct rmi_F01_query *queryRegisters; +}; + +/*. + * The interrupt handler for Fn $01 doesn't do anything (for now). + */ +void FN_01_inthandler(struct rmi_function_info *rmifninfo, + unsigned int assertedIRQs) +{ + struct f01_instance_data *instanceData = (struct f01_instance_data *) rmifninfo->fndata; + + printk(KERN_DEBUG "%s: Read device status.", __func__); + + if (rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.dataBaseAddr, + &instanceData->dataRegisters->deviceStatus, 1)) { + printk(KERN_ERR "%s : Could not read F01 device status.\n", + __func__); + } + + /* TODO: Check for reset and handle appropriately. + */ +} +EXPORT_SYMBOL(FN_01_inthandler); + +/* + * This reads in the function $01 source data. + * + */ +void FN_01_attention(struct rmi_function_info *rmifninfo) +{ + struct f01_instance_data *instanceData = (struct f01_instance_data *) rmifninfo->fndata; + + /* TODO: Compute size to read and number of IRQ registers to processors + * dynamically. See comments in rmi.h. */ + if (rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.dataBaseAddr+1, + instanceData->dataRegisters->irqs, 1)) { + printk(KERN_ERR "%s : Could not read interrupt status registers at 0x%02x\n", + __func__, rmifninfo->funcDescriptor.dataBaseAddr); + } + + if (instanceData->dataRegisters->irqs[0] & instanceData->controlRegisters->interruptEnable[0]) { + /* call down to the sensors irq dispatcher to dispatch all enabled IRQs */ + rmifninfo->sensor->dispatchIRQs(rmifninfo->sensor, + instanceData->dataRegisters->irqs[0]); + } + +} +EXPORT_SYMBOL(FN_01_attention); + +int FN_01_config(struct rmi_function_info *rmifninfo) +{ + /* print info and do any source specific configuration. */ + int retval = 0; + + printk(KERN_DEBUG "%s: RMI4 function $01 config\n", __func__); + + /* On slow processors, we need to throttle back the rate at which + * data updates become ready. */ +#if 0 + /* TODO: This code gets invoked pointlessly on some systems, and causes + * the Synaptics device to stop working in those cases. We need to figure + * out what's going on there. + */ + if (HZ < 500) { + /* The default packet rate of 80 packets per + * second is too fast (the Linux time slice for + * sub-GHz processors is only 100 times per second). + * So re-program it to 40 packets per second. + */ + /* TODO: We need to OR this in, rather than stomping on the other + * contents of the register. It's OK for now, because this is + * early in the initializaton process and nobody else has had + * a chance to change this register, which defaults to 0. + */ + rmi_write(rmifninfo->sensor, rmifninfo->funcDescriptor.controlBaseAddr, RMI_REPORT_RATE_40); + printk(KERN_INFO "%s: Throttled back reporting for slow CPU (%d HZ).", __func__, HZ); + } +#endif + + return retval; +} +EXPORT_SYMBOL(FN_01_config); + +/* Initialize any function $01 specific params and settings - input + * settings, device settings, etc. + */ +int FN_01_init(struct rmi_function_device *function_device) +{ + pr_debug("%s: RMI4 function $01 init\n", __func__); + + return 0; +} +EXPORT_SYMBOL(FN_01_init); + +int FN_01_detect(struct rmi_function_info *rmifninfo, + struct rmi_function_descriptor *fndescr, unsigned int interruptCount) +{ + int i; + int InterruptOffset; + int retval = 0; + struct f01_instance_data *instanceData; + struct rmi_F01_control *controlRegisters; + struct rmi_F01_data *dataRegisters; + struct rmi_F01_query *queryRegisters; + + pr_debug("%s: RMI4 function $01 detect\n", __func__); + + /* Store addresses - used elsewhere to read data, + * control, query, etc. */ + rmifninfo->funcDescriptor.queryBaseAddr = fndescr->queryBaseAddr; + rmifninfo->funcDescriptor.commandBaseAddr = fndescr->commandBaseAddr; + rmifninfo->funcDescriptor.controlBaseAddr = fndescr->controlBaseAddr; + rmifninfo->funcDescriptor.dataBaseAddr = fndescr->dataBaseAddr; + rmifninfo->funcDescriptor.interruptSrcCnt = fndescr->interruptSrcCnt; + rmifninfo->funcDescriptor.functionNum = fndescr->functionNum; + + rmifninfo->numSources = fndescr->interruptSrcCnt; + + /* Set up context data. */ + instanceData = kzalloc(sizeof(*instanceData), GFP_KERNEL); + if (!instanceData) { + printk(KERN_ERR "%s: Error allocating memory for F01 context data.\n", __func__); + return -ENOMEM; + } + queryRegisters = kzalloc(sizeof(*queryRegisters), GFP_KERNEL); + if (!queryRegisters) { + printk(KERN_ERR "%s: Error allocating memory for F01 query registers.\n", __func__); + return -ENOMEM; + } + instanceData->queryRegisters = queryRegisters; + retval = rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.queryBaseAddr, + (char *)instanceData->queryRegisters, sizeof(struct rmi_F01_query)); + if (retval) { + printk(KERN_ERR "%s : Could not read F01 control registers at 0x%02x. Error %d.\n", + __func__, rmifninfo->funcDescriptor.dataBaseAddr, retval); + } + printk(KERN_DEBUG "%s: RMI Protocol: %d.%d", + __func__, queryRegisters->rmi_maj_ver, queryRegisters->rmi_min_ver); + printk(KERN_DEBUG "%s: Manufacturer: %d %s", __func__, + queryRegisters->mfgid, queryRegisters->mfgid == 1 ? "(Synaptics)" : ""); + printk(KERN_DEBUG "%s: Properties: 0x%x", + __func__, queryRegisters->properties); + printk(KERN_DEBUG "%s: Product Info: 0x%x 0x%x", + __func__, queryRegisters->prod_info[0], queryRegisters->prod_info[1]); + printk(KERN_DEBUG "%s: Date Code: Year : %d Month: %d Day: %d", + __func__, queryRegisters->date_code[0], queryRegisters->date_code[1], + queryRegisters->date_code[2]); + printk(KERN_DEBUG "%s: Tester ID: %d", __func__, queryRegisters->tester_id); + printk(KERN_DEBUG "%s: Serial Number: 0x%x", + __func__, queryRegisters->serial_num); + printk(KERN_DEBUG "%s: Product ID: %s", __func__, queryRegisters->prod_id); + + /* TODO: size of control registers needs to be computed dynamically. See comment + * in rmi.h. */ + controlRegisters = kzalloc(sizeof(*controlRegisters), GFP_KERNEL); + if (!controlRegisters) { + printk(KERN_ERR "%s: Error allocating memory for F01 control registers.\n", __func__); + return -ENOMEM; + } + instanceData->controlRegisters = controlRegisters; + retval = rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.controlBaseAddr, + (char *)instanceData->controlRegisters, sizeof(struct rmi_F01_control)); + if (retval) { + printk(KERN_ERR "%s : Could not read F01 control registers at 0x%02x. Error %d.\n", + __func__, rmifninfo->funcDescriptor.dataBaseAddr, retval); + } + + /* TODO: size of data registers needs to be computed dynamically. See comment + * in rmi.h. */ + dataRegisters = kzalloc(sizeof(*dataRegisters), GFP_KERNEL); + if (!dataRegisters) { + printk(KERN_ERR "%s: Error allocating memory for F01 data registers.\n", __func__); + return -ENOMEM; + } + instanceData->dataRegisters = dataRegisters; + rmifninfo->fndata = instanceData; + + /* Need to get interrupt info to be used later when handling + interrupts. */ + rmifninfo->interruptRegister = interruptCount/8; + + /* loop through interrupts for each source and or in a bit + to the interrupt mask for each. */ + InterruptOffset = interruptCount % 8; + + for (i = InterruptOffset; + i < ((fndescr->interruptSrcCnt & 0x7) + InterruptOffset); + i++) { + rmifninfo->interruptMask |= 1 << i; + } + + return retval; +} +EXPORT_SYMBOL(FN_01_detect); diff --git a/drivers/input/touchscreen/rmi_f01.h b/drivers/input/touchscreen/rmi_f01.h new file mode 100755 index 0000000..976e062 --- /dev/null +++ b/drivers/input/touchscreen/rmi_f01.h @@ -0,0 +1,40 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) Function $01 header. + * Copyright (c) 2007 - 2011, Synaptics Incorporated + * + * There is only one function $01 for each RMI4 sensor. This will be + * the function that is used to set sensor control and configurations + * and check the interrupts to find the source function that is interrupting. + * + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ +#ifndef _RMI_FUNCTION_01_H +#define _RMI_FUNCTION_01_H + +void FN_01_inthandler(struct rmi_function_info *rmifninfo, + unsigned int assertedIRQs); +int FN_01_config(struct rmi_function_info *rmifninfo); +int FN_01_init(struct rmi_function_device *function_device); +int FN_01_detect(struct rmi_function_info *rmifninfo, + struct rmi_function_descriptor *fndescr, + unsigned int interruptCount); +void FN_01_attention(struct rmi_function_info *rmifninfo); +#endif diff --git a/drivers/input/touchscreen/rmi_f11.c b/drivers/input/touchscreen/rmi_f11.c new file mode 100755 index 0000000..5e75427 --- /dev/null +++ b/drivers/input/touchscreen/rmi_f11.c @@ -0,0 +1,712 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) Function $11 support for 2D. + * Copyright (c) 2007 - 2011, Synaptics Incorporated + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/input.h> +#include <linux/slab.h> + +#include "rmi.h" +#include "rmi_drvr.h" +#include "rmi_bus.h" +#include "rmi_sensor.h" +#include "rmi_function.h" +#include "rmi_f11.h" + + +static int sensorMaxX; +static int sensorMaxY; + +struct f11_instance_data { + struct rmi_F11_device_query *deviceInfo; + struct rmi_F11_sensor_query *sensorInfo; + struct rmi_F11_control *controlRegisters; + unsigned char fingerDataBufferSize; + unsigned char absDataOffset; + unsigned char absDataSize; + unsigned char relDataOffset; + unsigned char gestureDataOffset; + unsigned char *fingerDataBuffer; + /* Last X & Y seen, needed at finger lift. Was down indicates at least one finger was here. */ + /* TODO: Eventually we'll need to track this info on a per finger basis. */ + bool wasdown; + unsigned int oldX; + unsigned int oldY; + /* Transformations to be applied to coordinates before reporting. */ + bool flipX; + bool flipY; + int offsetX; + int offsetY; + int clipXLow; + int clipXHigh; + int clipYLow; + int clipYHigh; +}; + +enum f11_finger_state { + F11_NO_FINGER = 0, + F11_PRESENT = 1, + F11_INACCURATE = 2, + F11_RESERVED = 3 +}; + + +static ssize_t rmi_fn_11_flip_show(struct device *dev, + struct device_attribute *attr, char *buf); + +static ssize_t rmi_fn_11_flip_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); + +DEVICE_ATTR(flip, 0664, rmi_fn_11_flip_show, rmi_fn_11_flip_store); /* RW attr */ + +static ssize_t rmi_fn_11_clip_show(struct device *dev, + struct device_attribute *attr, char *buf); + +static ssize_t rmi_fn_11_clip_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); + +DEVICE_ATTR(clip, 0664, rmi_fn_11_clip_show, rmi_fn_11_clip_store); /* RW attr */ + +static ssize_t rmi_fn_11_offset_show(struct device *dev, + struct device_attribute *attr, char *buf); + +static ssize_t rmi_fn_11_offset_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); + +DEVICE_ATTR(offset, 0664, rmi_fn_11_offset_show, rmi_fn_11_offset_store); /* RW attr */ + +/* + * There is no attention function for Fn $11 - it is left NULL + * in the function table so it is not called. + * + */ + + +/* + * This reads in a sample and reports the function $11 source data to the + * input subsystem. It is used for both polling and interrupt driven + * operation. This is called a lot so don't put in any informational + * printks since they will slow things way down! + */ +void FN_11_inthandler(struct rmi_function_info *rmifninfo, + unsigned int assertedIRQs) +{ + /* number of touch points - fingers down in this case */ + int fingerDownCount; + int finger; + struct rmi_function_device *function_device; + struct f11_instance_data *instanceData; + + instanceData = (struct f11_instance_data *) rmifninfo->fndata; + + fingerDownCount = 0; + function_device = rmifninfo->function_device; + + /* get 2D sensor finger data */ + + if (rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.dataBaseAddr, + instanceData->fingerDataBuffer, instanceData->fingerDataBufferSize)) { + printk(KERN_ERR "%s: Failed to read finger data registers.\n", __func__); + return; + } + + /* First we need to count the fingers and generate some events related to that. */ + for (finger = 0; finger < instanceData->sensorInfo->numberOfFingers; finger++) { + int reg; + int fingerShift; + int fingerStatus; + + /* determine which data byte the finger status is in */ + reg = finger/4; + /* bit shift to get finger's status */ + fingerShift = (finger % 4) * 2; + fingerStatus = (instanceData->fingerDataBuffer[reg] >> fingerShift) & 3; + + if (fingerStatus == F11_PRESENT || fingerStatus == F11_INACCURATE) { + fingerDownCount++; + instanceData->wasdown = true; + } + } + input_report_key(function_device->input, + BTN_TOUCH, fingerDownCount); + for (finger = 0; finger < (instanceData->sensorInfo->numberOfFingers - 1); finger++) { + input_report_key(function_device->input, + BTN_2 + finger, fingerDownCount >= (finger + 2)); + } + + for (finger = 0; finger < instanceData->sensorInfo->numberOfFingers; finger++) { + int reg; + int fingerShift; + int fingerStatus; + int X = 0, Y = 0, Z = 0, Wy = 0, Wx = 0; + + /* determine which data byte the finger status is in */ + reg = finger/4; + /* bit shift to get finger's status */ + fingerShift = (finger % 4) * 2; + fingerStatus = (instanceData->fingerDataBuffer[reg] >> fingerShift) & 3; + + /* if finger status indicates a finger is present then + read the finger data and report it */ + if (fingerStatus == F11_PRESENT || fingerStatus == F11_INACCURATE) { + + if (instanceData->sensorInfo->hasAbs) { + reg = instanceData->absDataOffset + (finger * instanceData->absDataSize); + X = (instanceData->fingerDataBuffer[reg] << 4) & 0x0ff0; + X |= (instanceData->fingerDataBuffer[reg+2] & 0x0f); + if (instanceData->flipX) + X = max(instanceData->controlRegisters->sensorMaxXPos-X, 0); + X = X - instanceData->offsetX; + X = min(max(X, instanceData->clipXLow), instanceData->clipXHigh); + Y = (instanceData->fingerDataBuffer[reg+1] << 4) & 0x0ff0; + Y |= ((instanceData->fingerDataBuffer[reg+2] & 0xf0) >> 4) & 0x0f; + if (instanceData->flipY) + Y = max(instanceData->controlRegisters->sensorMaxYPos-Y, 0); + Y = Y - instanceData->offsetY; + Y = min(max(Y, instanceData->clipYLow), instanceData->clipYHigh); + + /* upper 4 bits of W are Wy, + lower 4 of W are Wx */ + Wy = (instanceData->fingerDataBuffer[reg+3] >> 4) & 0x0f; + Wx = instanceData->fingerDataBuffer[reg+3] & 0x0f; + + Z = instanceData->fingerDataBuffer[reg+4]; + + printk(KERN_DEBUG "%s: Finger %d X %d Y %d Z %d Wx %d Wy %d", __func__, finger, X, Y, Z, Wx, Wy); + + /* if this is the first finger report normal + ABS_X, ABS_Y, PRESSURE, TOOL_WIDTH events for + non-MT apps. Apps that support Multi-touch + will ignore these events and use the MT events. + Apps that don't support Multi-touch will still + function. + */ + if (fingerDownCount == 1) { + instanceData->oldX = X; + instanceData->oldY = Y; + input_report_abs(function_device->input, ABS_X, X); + input_report_abs(function_device->input, ABS_Y, Y); + input_report_abs(function_device->input, ABS_PRESSURE, Z); + input_report_abs(function_device->input, ABS_TOOL_WIDTH, + max(Wx, Wy)); + } else { + /* TODO generate non MT events for multifinger situation. */ + } +#ifdef CONFIG_SYNA_MULTI_TOUCH + /* Report Multi-Touch events for each finger */ + /* major axis of touch area ellipse */ + input_report_abs(function_device->input, ABS_MT_TOUCH_MAJOR, Z); + /* minor axis of touch area ellipse */ + input_report_abs(function_device->input, ABS_MT_WIDTH_MAJOR, + max(Wx, Wy)); + /* Currently only 2 supported - 1 or 0 */ + input_report_abs(function_device->input, ABS_MT_ORIENTATION, + (Wx > Wy ? 1 : 0)); + input_report_abs(function_device->input, ABS_MT_POSITION_X, X); + input_report_abs(function_device->input, ABS_MT_POSITION_Y, Y); + + /* TODO: Tracking ID needs to be reported but not used yet. */ + /* Could be formed by keeping an id per position and assiging */ + /* a new id when fingerStatus changes for that position.*/ + input_report_abs(function_device->input, ABS_MT_TRACKING_ID, + finger+1); + + /* MT sync between fingers */ + input_mt_sync(function_device->input); +#endif + } + } + } + + /* if we had a finger down before and now we don't have any send a button up. */ + if ((fingerDownCount == 0) && instanceData->wasdown) { + instanceData->wasdown = false; + +#ifdef CONFIG_SYNA_MULTI_TOUCH + input_report_abs(function_device->input, ABS_MT_TOUCH_MAJOR, 0); + input_report_abs(function_device->input, ABS_MT_WIDTH_MAJOR, 0); + input_report_abs(function_device->input, ABS_MT_POSITION_X, instanceData->oldX); + input_report_abs(function_device->input, ABS_MT_POSITION_Y, instanceData->oldY); + input_report_abs(function_device->input, ABS_MT_TRACKING_ID, 1); + input_mt_sync(function_device->input); +#endif + + input_report_abs(function_device->input, ABS_X, instanceData->oldX); + input_report_abs(function_device->input, ABS_Y, instanceData->oldY); + instanceData->oldX = instanceData->oldY = 0; + printk(KERN_DEBUG "%s: Finger up.", __func__); + } + + input_sync(function_device->input); /* sync after groups of events */ + +} +EXPORT_SYMBOL(FN_11_inthandler); + +int FN_11_config(struct rmi_function_info *rmifninfo) +{ + /* For the data source - print info and do any + source specific configuration. */ + unsigned char data[14]; + int retval = 0; + + pr_debug("%s: RMI4 function $11 config\n", __func__); + + /* Get and print some info about the data source... */ + + /* To Query 2D devices we need to read from the address obtained + * from the function descriptor stored in the RMI function info. + */ + retval = rmi_read_multiple(rmifninfo->sensor, rmifninfo->funcDescriptor.queryBaseAddr, + data, 9); + if (retval) { + printk(KERN_ERR "%s: RMI4 function $11 config:" + "Could not read function query registers 0x%x\n", + __func__, rmifninfo->funcDescriptor.queryBaseAddr); + } else { + pr_debug("%s: Number of Fingers: %d\n", + __func__, data[1] & 7); + pr_debug("%s: Is Configurable: %d\n", + __func__, data[1] & (1 << 7) ? 1 : 0); + pr_debug("%s: Has Gestures: %d\n", + __func__, data[1] & (1 << 5) ? 1 : 0); + pr_debug("%s: Has Absolute: %d\n", + __func__, data[1] & (1 << 4) ? 1 : 0); + pr_debug("%s: Has Relative: %d\n", + __func__, data[1] & (1 << 3) ? 1 : 0); + + pr_debug("%s: Number X Electrodes: %d\n", + __func__, data[2] & 0x1f); + pr_debug("%s: Number Y Electrodes: %d\n", + __func__, data[3] & 0x1f); + pr_debug("%s: Maximum Electrodes: %d\n", + __func__, data[4] & 0x1f); + + pr_debug("%s: Absolute Data Size: %d\n", + __func__, data[5] & 3); + + pr_debug("%s: Has XY Dist: %d\n", + __func__, data[7] & (1 << 7) ? 1 : 0); + pr_debug("%s: Has Pinch: %d\n", + __func__, data[7] & (1 << 6) ? 1 : 0); + pr_debug("%s: Has Press: %d\n", + __func__, data[7] & (1 << 5) ? 1 : 0); + pr_debug("%s: Has Flick: %d\n", + __func__, data[7] & (1 << 4) ? 1 : 0); + pr_debug("%s: Has Early Tap: %d\n", + __func__, data[7] & (1 << 3) ? 1 : 0); + pr_debug("%s: Has Double Tap: %d\n", + __func__, data[7] & (1 << 2) ? 1 : 0); + pr_debug("%s: Has Tap and Hold: %d\n", + __func__, data[7] & (1 << 1) ? 1 : 0); + pr_debug("%s: Has Tap: %d\n", + __func__, data[7] & 1 ? 1 : 0); + pr_debug("%s: Has Palm Detect: %d\n", + __func__, data[8] & 1 ? 1 : 0); + pr_debug("%s: Has Rotate: %d\n", + __func__, data[8] & (1 << 1) ? 1 : 0); + + retval = rmi_read_multiple(rmifninfo->sensor, + rmifninfo->funcDescriptor.controlBaseAddr, data, 14); + if (retval) { + printk(KERN_ERR "%s: RMI4 function $11 config:" + "Could not read control registers 0x%x\n", + __func__, rmifninfo->funcDescriptor.controlBaseAddr); + return retval; + } + + /* Store these for use later...*/ + sensorMaxX = ((data[6] & 0x1f) << 8) | ((data[7] & 0xff) << 0); + sensorMaxY = ((data[8] & 0x1f) << 8) | ((data[9] & 0xff) << 0); + + pr_debug("%s: Sensor Max X: %d\n", __func__, sensorMaxX); + pr_debug("%s: Sensor Max Y: %d\n", __func__, sensorMaxY); + } + + return retval; +} +EXPORT_SYMBOL(FN_11_config); + +/* Initialize any function $11 specific params and settings - input + * settings, device settings, etc. + */ +int FN_11_init(struct rmi_function_device *function_device) +{ + int retval = 0; + struct f11_instance_data *instance_data = function_device->rfi->fndata; + printk(KERN_DEBUG "%s: RMI4 F11 init\n", __func__); + + /* need to init the input abs params for the 2D */ + set_bit(EV_ABS, function_device->input->evbit); + set_bit(EV_SYN, function_device->input->evbit); + set_bit(EV_KEY, function_device->input->evbit); + + /* Use the max X and max Y read from the device, or the clip values, + * whichever is stricter. + */ + input_set_abs_params(function_device->input, ABS_X, instance_data->clipXLow, + min((int) instance_data->controlRegisters->sensorMaxXPos, instance_data->clipXHigh), + 0, 0); + input_set_abs_params(function_device->input, ABS_Y, instance_data->clipYLow, + min((int) instance_data->controlRegisters->sensorMaxYPos, instance_data->clipYHigh), + 0, 0); + input_set_abs_params(function_device->input, ABS_PRESSURE, 0, 255, 0, 0); + input_set_abs_params(function_device->input, ABS_TOOL_WIDTH, 0, 15, 0, 0); + +#ifdef CONFIG_SYNA_MULTI_TOUCH + input_set_abs_params(function_device->input, ABS_MT_TOUCH_MAJOR, 0, 15, 0, 0); + input_set_abs_params(function_device->input, ABS_MT_TOUCH_MINOR, 0, 15, 0, 0); + input_set_abs_params(function_device->input, ABS_MT_ORIENTATION, 0, 1, 0, 0); + input_set_abs_params(function_device->input, ABS_MT_TRACKING_ID, 1, 10, 0, 0); + input_set_abs_params(function_device->input, ABS_MT_POSITION_X, instance_data->clipXLow, + min((int) instance_data->controlRegisters->sensorMaxXPos, instance_data->clipXHigh), + 0, 0); + input_set_abs_params(function_device->input, ABS_MT_POSITION_Y, instance_data->clipYLow, + min((int) instance_data->controlRegisters->sensorMaxYPos, instance_data->clipYHigh), + 0, 0); +#endif + + printk(KERN_DEBUG "%s: Creating sysfs files.", __func__); + retval = device_create_file(&function_device->dev, &dev_attr_flip); + if (retval) { + printk(KERN_ERR "%s: Failed to create flip.", __func__); + return retval; + } + retval = device_create_file(&function_device->dev, &dev_attr_clip); + if (retval) { + printk(KERN_ERR "%s: Failed to create clip.", __func__); + return retval; + } + retval = device_create_file(&function_device->dev, &dev_attr_offset); + if (retval) { + printk(KERN_ERR "%s: Failed to create offset.", __func__); + return retval; + } + + return 0; +} +EXPORT_SYMBOL(FN_11_init); + +int FN_11_detect(struct rmi_function_info *rmifninfo, + struct rmi_function_descriptor *fndescr, unsigned int interruptCount) +{ + unsigned char fn11Queries[12]; /* TODO: Compute size correctly. */ + unsigned char fn11Control[12]; /* TODO: Compute size correctly. */ + int i; + unsigned short fn11InterruptOffset; + unsigned char fn11AbsDataBlockSize; + int fn11HasPinch, fn11HasFlick, fn11HasTap; + int fn11HasTapAndHold, fn11HasDoubleTap; + int fn11HasEarlyTap, fn11HasPress; + int fn11HasPalmDetect, fn11HasRotate; + int fn11HasRel; + unsigned char f11_egr_0, f11_egr_1; + unsigned int fn11AllDataBlockSize; + int retval = 0; + struct f11_instance_data *instanceData; + + printk(KERN_DEBUG "%s: RMI4 F11 detect\n", __func__); + + instanceData = kzalloc(sizeof(struct f11_instance_data), GFP_KERNEL); + if (!instanceData) { + printk(KERN_ERR "%s: Error allocating F11 instance data.\n", __func__); + return -ENOMEM; + } + instanceData->deviceInfo = kzalloc(sizeof(struct rmi_F11_device_query), GFP_KERNEL); + if (!instanceData->deviceInfo) { + printk(KERN_ERR "%s: Error allocating F11 device query.\n", __func__); + return -ENOMEM; + } + instanceData->sensorInfo = kzalloc(sizeof(struct rmi_F11_sensor_query), GFP_KERNEL); + if (!instanceData->sensorInfo) { + printk(KERN_ERR "%s: Error allocating F11 sensor query.\n", __func__); + return -ENOMEM; + } + rmifninfo->fndata = instanceData; + + /* TODO: Initialize these through some normal kernel mechanism. + */ + instanceData->flipX = true; + instanceData->flipY = false; + instanceData->offsetX = instanceData->offsetY = 0; + instanceData->clipXLow = instanceData->clipYLow = 0; + /* TODO: 65536 should actually be the largest valid RMI4 position coordinate */ + instanceData->clipXHigh = instanceData->clipYHigh = 65536; + + /* Store addresses - used elsewhere to read data, + * control, query, etc. */ + rmifninfo->funcDescriptor.queryBaseAddr = fndescr->queryBaseAddr; + rmifninfo->funcDescriptor.commandBaseAddr = fndescr->commandBaseAddr; + rmifninfo->funcDescriptor.controlBaseAddr = fndescr->controlBaseAddr; + rmifninfo->funcDescriptor.dataBaseAddr = fndescr->dataBaseAddr; + rmifninfo->funcDescriptor.interruptSrcCnt = fndescr->interruptSrcCnt; + rmifninfo->funcDescriptor.functionNum = fndescr->functionNum; + + rmifninfo->numSources = fndescr->interruptSrcCnt; + + /* need to get number of fingers supported, data size, etc. - + to be used when getting data since the number of registers to + read depends on the number of fingers supported and data size. */ + retval = rmi_read_multiple(rmifninfo->sensor, fndescr->queryBaseAddr, fn11Queries, + sizeof(fn11Queries)); + if (retval) { + printk(KERN_ERR "%s: RMI4 function $11 detect: " + "Could not read function query registers 0x%x\n", + __func__, rmifninfo->funcDescriptor.queryBaseAddr); + return retval; + } + + /* Extract device data. */ + instanceData->deviceInfo->hasQuery9 = (fn11Queries[0] & 0x04) != 0; + instanceData->deviceInfo->numberOfSensors = (fn11Queries[0] & 0x07) + 1; + printk(KERN_DEBUG "%s: F11 device - %d sensors. Query 9? %d.", __func__, instanceData->deviceInfo->numberOfSensors, instanceData->deviceInfo->hasQuery9); + + /* Extract sensor data. */ + /* 2D data sources have only 3 bits for the number of fingers + supported - so the encoding is a bit wierd. */ + instanceData->sensorInfo->numberOfFingers = 2; /* default number of fingers supported */ + if ((fn11Queries[1] & 0x7) <= 4) + /* add 1 since zero based */ + instanceData->sensorInfo->numberOfFingers = (fn11Queries[1] & 0x7) + 1; + else { + /* a value of 5 is up to 10 fingers - 6 and 7 are reserved + (shouldn't get these i int retval;n a normal 2D source). */ + if ((fn11Queries[1] & 0x7) == 5) + instanceData->sensorInfo->numberOfFingers = 10; + } + instanceData->sensorInfo->configurable = (fn11Queries[1] & 0x80) != 0; + instanceData->sensorInfo->hasSensitivityAdjust = (fn11Queries[1] & 0x40) != 0; + instanceData->sensorInfo->hasGestures = (fn11Queries[1] & 0x20) != 0; + instanceData->sensorInfo->hasAbs = (fn11Queries[1] & 0x10) != 0; + instanceData->sensorInfo->hasRel = (fn11Queries[1] & 0x08) != 0; + instanceData->sensorInfo->absDataSize = fn11Queries[5] & 0x03; + printk(KERN_DEBUG "%s: Number of fingers: %d.", __func__, instanceData->sensorInfo->numberOfFingers); + + /* Need to get interrupt info to be used later when handling + interrupts. */ + rmifninfo->interruptRegister = interruptCount/8; + + /* loop through interrupts for each source in fn $11 and or in a bit + to the interrupt mask for each. */ + fn11InterruptOffset = interruptCount % 8; + + for (i = fn11InterruptOffset; + i < ((fndescr->interruptSrcCnt & 0x7) + fn11InterruptOffset); + i++) + rmifninfo->interruptMask |= 1 << i; + + /* Figure out just how much data we'll need to read. */ + instanceData->fingerDataBufferSize = (instanceData->sensorInfo->numberOfFingers + 3) / 4; + /* One each for X and Y, one for LSB for X & Y, one for W, one for Z */ + fn11AbsDataBlockSize = 5; + if (instanceData->sensorInfo->absDataSize != 0) + printk(KERN_WARNING "%s: Unrecognized abs data size %d ignored.", __func__, instanceData->sensorInfo->absDataSize); + if (instanceData->sensorInfo->hasAbs) { + instanceData->absDataSize = fn11AbsDataBlockSize; + instanceData->absDataOffset = instanceData->fingerDataBufferSize; + instanceData->fingerDataBufferSize += instanceData->sensorInfo->numberOfFingers * fn11AbsDataBlockSize; + } + if (instanceData->sensorInfo->hasRel) { + instanceData->relDataOffset = instanceData->fingerDataBufferSize; + instanceData->fingerDataBufferSize += instanceData->sensorInfo->numberOfFingers * 2; + } + if (instanceData->sensorInfo->hasGestures) { + instanceData->gestureDataOffset = instanceData->fingerDataBufferSize; + printk(KERN_WARNING "%s: WARNING Need to correctly compute gesture data location.", __func__); + } + + /* need to determine the size of data to read - this depends on + conditions such as whether Relative data is reported and if Gesture + data is reported. */ + f11_egr_0 = fn11Queries[7]; + f11_egr_1 = fn11Queries[8]; + + /* Get info about what EGR data is supported, whether it has + Relative data supported, etc. */ + fn11HasPinch = f11_egr_0 & 0x40; + fn11HasFlick = f11_egr_0 & 0x10; + fn11HasTap = f11_egr_0 & 0x01; + fn11HasTapAndHold = f11_egr_0 & 0x02; + fn11HasDoubleTap = f11_egr_0 & 0x04; + fn11HasEarlyTap = f11_egr_0 & 0x08; + fn11HasPress = f11_egr_0 & 0x20; + fn11HasPalmDetect = f11_egr_1 & 0x01; + fn11HasRotate = f11_egr_1 & 0x02; + fn11HasRel = fn11Queries[1] & 0x08; + + /* Size of all data including finger status, absolute data for each + finger, relative data and EGR data */ + fn11AllDataBlockSize = + /* finger status, four fingers per register */ + ((instanceData->sensorInfo->numberOfFingers + 3) / 4) + + /* absolute data, per finger times number of fingers */ + (fn11AbsDataBlockSize * instanceData->sensorInfo->numberOfFingers) + + /* two relative registers (if relative is being reported) */ + 2 * fn11HasRel + + /* F11_2D_Data8 is only present if the egr_0 + register is non-zero. */ + !!(f11_egr_0) + + /* F11_2D_Data9 is only present if either egr_0 or + egr_1 registers are non-zero. */ + (f11_egr_0 || f11_egr_1) + + /* F11_2D_Data10 is only present if EGR_PINCH or EGR_FLICK of + egr_0 reports as 1. */ + !!(fn11HasPinch | fn11HasFlick) + + /* F11_2D_Data11 and F11_2D_Data12 are only present if + EGR_FLICK of egr_0 reports as 1. */ + 2 * !!(fn11HasFlick); + instanceData->fingerDataBuffer = kcalloc(instanceData->fingerDataBufferSize, sizeof(unsigned char), GFP_KERNEL); + if (!instanceData->fingerDataBuffer) { + printk(KERN_ERR "%s: Failed to allocate finger data buffer.", __func__); + return -ENOMEM; + } + + /* Grab a copy of the control registers. */ + instanceData->controlRegisters = kzalloc(sizeof(struct rmi_F11_control), GFP_KERNEL); + if (!instanceData->controlRegisters) { + printk(KERN_ERR "%s: Error allocating F11 control registers.\n", __func__); + return -ENOMEM; + } + retval = rmi_read_multiple(rmifninfo->sensor, fndescr->controlBaseAddr, + fn11Control, sizeof(fn11Control)); + if (retval) { + printk(KERN_ERR "%s: Failed to read F11 control registers.", __func__); + return retval; + } + instanceData->controlRegisters->sensorMaxXPos = (((int) fn11Control[7] & 0x0F) << 8) + fn11Control[6]; + instanceData->controlRegisters->sensorMaxYPos = (((int) fn11Control[9] & 0x0F) << 8) + fn11Control[8]; + printk(KERN_DEBUG "%s: Max X %d Max Y %d", __func__, instanceData->controlRegisters->sensorMaxXPos, instanceData->controlRegisters->sensorMaxYPos); + return 0; +} +EXPORT_SYMBOL(FN_11_detect); + +static ssize_t rmi_fn_11_flip_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata; + + return sprintf(buf, "%u %u\n", instance_data->flipX, instance_data->flipY); +} + +static ssize_t rmi_fn_11_flip_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata; + unsigned int newX, newY; + + printk(KERN_INFO "%s: Flip set to %s.", __func__, buf); + + if (sscanf(buf, "%u %u", &newX, &newY) != 2) + return -EINVAL; + if (newX < 0 || newX > 1 || newY < 0 || newY > 1) + return -EINVAL; + instance_data->flipX = newX; + instance_data->flipY = newY; + + return count; +} + +static ssize_t rmi_fn_11_offset_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata; + + return sprintf(buf, "%d %d\n", instance_data->offsetX, instance_data->offsetY); +} + +static ssize_t rmi_fn_11_offset_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata; + int newX, newY; + + printk(KERN_INFO "%s: Offset set to %s.", __func__, buf); + + if (sscanf(buf, "%d %d", &newX, &newY) != 2) + return -EINVAL; + instance_data->offsetX = newX; + instance_data->offsetY = newY; + + return count; +} + +static ssize_t rmi_fn_11_clip_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata; + + return sprintf(buf, "%u %u %u %u\n", + instance_data->clipXLow, instance_data->clipXHigh, + instance_data->clipYLow, instance_data->clipYHigh); +} + +static ssize_t rmi_fn_11_clip_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct f11_instance_data *instance_data = (struct f11_instance_data *)fn->rfi->fndata; + unsigned int newXLow, newXHigh, newYLow, newYHigh; + + printk(KERN_INFO "%s: Clip set to %s.", __func__, buf); + + if (sscanf(buf, "%u %u %u %u", &newXLow, &newXHigh, &newYLow, &newYHigh) != 4) + return -EINVAL; + if (newXLow < 0 || newXLow >= newXHigh || newYLow < 0 || newYLow >= newYHigh) + return -EINVAL; + instance_data->clipXLow = newXLow; + instance_data->clipXHigh = newXHigh; + instance_data->clipYLow = newYLow; + instance_data->clipYHigh = newYHigh; + + input_set_abs_params(fn->input, ABS_X, instance_data->clipXLow, + min((int) instance_data->controlRegisters->sensorMaxXPos, instance_data->clipXHigh), + 0, 0); + input_set_abs_params(fn->input, ABS_Y, instance_data->clipYLow, + min((int) instance_data->controlRegisters->sensorMaxYPos, instance_data->clipYHigh), + 0, 0); + +#ifdef CONFIG_SYNA_MULTI_TOUCH + input_set_abs_params(fn->input, ABS_MT_POSITION_X, instance_data->clipXLow, + min((int) instance_data->controlRegisters->sensorMaxXPos, instance_data->clipXHigh), + 0, 0); + input_set_abs_params(fn->input, ABS_MT_POSITION_Y, instance_data->clipYLow, + min((int) instance_data->controlRegisters->sensorMaxYPos, instance_data->clipYHigh), + 0, 0); +#endif + + return count; +} diff --git a/drivers/input/touchscreen/rmi_f11.h b/drivers/input/touchscreen/rmi_f11.h new file mode 100755 index 0000000..0bf386a --- /dev/null +++ b/drivers/input/touchscreen/rmi_f11.h @@ -0,0 +1,43 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) Function $11 header. + * Copyright (c) 2007 - 2010, Synaptics Incorporated + * + * For every RMI4 function that has a data source - like 2D sensors, + * buttons, LEDs, GPIOs, etc. - the user will create a new rmi_function_xx.c + * file and add these functions to perform the config(), init(), report() + * and detect() functionality. The function pointers are then srored under + * the RMI function info and these functions will automatically be called by + * the global config(), init(), report() and detect() functions that will + * loop through all data sources and call the data sources functions using + * these functions pointed to by the function ptrs. + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ +#ifndef _RMI_FUNCTION_11_H +#define _RMI_FUNCTION_11_H + +void FN_11_inthandler(struct rmi_function_info *rmifninfo, + unsigned int assertedIRQs); +int FN_11_config(struct rmi_function_info *rmifninfo); +int FN_11_init(struct rmi_function_device *function_device); +int FN_11_detect(struct rmi_function_info *rmifninfo, + struct rmi_function_descriptor *fndescr, + unsigned int interruptCount); +/* No attention function for Fn $11 */ +#endif diff --git a/drivers/input/touchscreen/rmi_f34.c b/drivers/input/touchscreen/rmi_f34.c new file mode 100755 index 0000000..583e0f8 --- /dev/null +++ b/drivers/input/touchscreen/rmi_f34.c @@ -0,0 +1,556 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) Function $34 support for sensor + * firmware reflashing. + * + * Copyright (c) 2007 - 2011, Synaptics Incorporated + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/input.h> +#include <linux/sysfs.h> +#include <linux/math64.h> +#include "rmi_drvr.h" +#include "rmi_bus.h" +#include "rmi_sensor.h" +#include "rmi_function.h" +#include "rmi_f34.h" + +/* data specific to fn $34 that needs to be kept around */ +struct rmi_fn_34_data { + unsigned char status; + unsigned char cmd; + unsigned short bootloaderid; + unsigned short blocksize; +}; + + +static ssize_t rmi_fn_34_status_show(struct device *dev, + struct device_attribute *attr, char *buf); + +static ssize_t rmi_fn_34_status_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); + + +static ssize_t rmi_fn_34_cmd_show(struct device *dev, + struct device_attribute *attr, char *buf); + +static ssize_t rmi_fn_34_cmd_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); + +static ssize_t rmi_fn_34_data_read(struct kobject *kobj, + char *buf, loff_t pos, size_t count); + +static ssize_t rmi_fn_34_data_write(struct kobject *kobj, + const char *buf, loff_t pos, size_t count); + +static ssize_t rmi_fn_34_bootloaderid_show(struct device *dev, + struct device_attribute *attr, char *buf); + +static ssize_t rmi_fn_34_bootloaderid_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); + +static ssize_t rmi_fn_34_blocksize_show(struct device *dev, + struct device_attribute *attr, char *buf); + +static ssize_t rmi_fn_34_blocksize_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); + +/* define the device attributes using DEVICE_ATTR macros */ +DEVICE_ATTR(status, 0444, rmi_fn_34_status_show, rmi_fn_34_status_store); /* RO attr */ +DEVICE_ATTR(cmd, 0664, rmi_fn_34_cmd_show, rmi_fn_34_cmd_store); /* RW attr */ +DEVICE_ATTR(bootloaderid, 0644, rmi_fn_34_bootloaderid_show, rmi_fn_34_bootloaderid_store); /* RW attr */ +DEVICE_ATTR(blocksize, 0444, rmi_fn_34_blocksize_show, rmi_fn_34_blocksize_store); /* RO attr */ + + +struct bin_attribute dev_attr_data = { + .attr = { + .name = "data", + .mode = 0644 + }, + .size = 0, + .read = rmi_fn_34_data_read, + .write = rmi_fn_34_data_write, +}; + +/* Helper fn to convert from processor specific data to our firmware specific endianness. + * TODO: Should we use ntohs or something like that? + */ +void copyEndianAgnostic(unsigned char *dest, unsigned short src) +{ + dest[0] = src%0x100; + dest[1] = src/0x100; +} + +/*. + * The interrupt handler for Fn $34. + */ +void FN_34_inthandler(struct rmi_function_info *rmifninfo, + unsigned int assertedIRQs) +{ + unsigned int status; + struct rmi_function_device *function_device = rmifninfo->function_device; + struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)rmifninfo->fndata; + + return; /* TODO: Remove this. */ + + /* Read the Fn $34 status register to see whether the previous command executed OK */ + /* inform user space - through a sysfs param. */ + if (rmi_read_multiple(function_device->sensor, function_device->function->functionDataBaseAddr+3, + (unsigned char *)&status, 1)) { + printk(KERN_ERR "%s : Could not read status from 0x%x\n", + __func__, function_device->function->functionDataBaseAddr+3); + status = 0xff; /* failure */ + } + + /* set a sysfs value that the user mode can read - only upper 4 bits are the status */ + fn34data->status = status & 0xf0; /* successful is $80, anything else is failure */ + +} +EXPORT_SYMBOL(FN_34_inthandler); + +void FN_34_attention(struct rmi_function_info *rmifninfo) +{ + +} +EXPORT_SYMBOL(FN_34_attention); + +int FN_34_config(struct rmi_function_info *rmifninfo) +{ + /* TODO: FIX THIS! We were panicking in this routine, but need to get + * other things working before returning to this. + */ + int retval = 0; +#if 0 + unsigned char uData[2]; + struct rmi_function_device *function_device = rmifninfo->function_device; + struct rmi_fn_34_data *fn34data; + + pr_debug("%s: RMI4 function $34 config\n", __func__); + + /* Here we will need to set up sysfs files for Bootloader ID and Block size */ + fn34data = (struct rmi_fn_34_data *)kzalloc(sizeof(struct rmi_fn_34_data), GFP_KERNEL); + if (!rmifninfo->fndata) { + printk(KERN_ERR "%s: Error allocating memeory for rmi_fn_34_data.\n", __func__); + return -ENOMEM; + } + rmifninfo->fndata = (void *)fn34data; + + /* set up sysfs file for Bootloader ID. */ + if (sysfs_create_file(&function_device->dev.kobj, &dev_attr_bootloaderid.attr) < 0) { + printk(KERN_ERR "Failed to create sysfs file for fn 34 bootloaderid.\n"); + return -ENODEV; + } + + /* set up sysfs file for Block Size. */ + if (sysfs_create_file(&function_device->dev.kobj, &dev_attr_blocksize.attr) < 0) { + printk(KERN_ERR "Failed to create sysfs file for fn 34 blocksize.\n"); + return -ENODEV; + } + + /* get the Bootloader ID and Block Size and store in the sysfs attributes. */ + retval = rmi_read_multiple(rmifninfo->sensor, function_device->function->functionQueryBaseAddr, + uData, 2); + if (retval) { + printk(KERN_ERR "%s : Could not read bootloaderid from 0x%x\n", + __func__, function_device->function->functionQueryBaseAddr); + return retval; + } + /* need to convert from our firmware storage to processore specific data */ + fn34data->bootloaderid = (unsigned int)uData[0] + (unsigned int)uData[1]*0x100; + + retval = rmi_read_multiple(rmifninfo->sensor, function_device->function->functionQueryBaseAddr+3, + uData, 2); + if (retval) { + printk(KERN_ERR "%s : Could not read block size from 0x%x\n", + __func__, function_device->function->functionQueryBaseAddr+3); + return retval; + } + /* need to convert from our firmware storage to processor specific data */ + fn34data->blocksize = (unsigned int)uData[0] + (unsigned int)uData[1]*0x100; + + /* set up sysfs file for status. */ + if (sysfs_create_file(&function_device->dev.kobj, &dev_attr_status.attr) < 0) { + printk(KERN_ERR "Failed to create sysfs file for fn 34 status.\n"); + return -ENODEV; + } + + /* Also, sysfs will need to have a file set up to distinguish between commands - like + Config write/read, Image write/verify.*/ + /* set up sysfs file for command code. */ + if (sysfs_create_file(&function_device->dev.kobj, &dev_attr_cmd.attr) < 0) { + printk(KERN_ERR "Failed to create sysfs file for fn 34 cmd.\n"); + return -ENODEV; + } + + /* We will also need a sysfs file for the image/config block to write or read.*/ + /* set up sysfs bin file for binary data block. Since the image is already in our format + there is no need to convert the data for endianess. */ + if (sysfs_create_bin_file(&function_device->dev.kobj, &dev_attr_data) < 0) { + printk(KERN_ERR "Failed to create sysfs file for fn 34 data.\n"); + return -ENODEV; + } +#endif + return retval; +} +EXPORT_SYMBOL(FN_34_config); + + +int FN_34_init(struct rmi_function_device *function_device) +{ + pr_debug("%s: RMI4 function $34 init\n", __func__); + return 0; +} +EXPORT_SYMBOL(FN_34_init); + +int FN_34_detect(struct rmi_function_info *rmifninfo, + struct rmi_function_descriptor *fndescr, unsigned int interruptCount) +{ + int i; + int InterruptOffset; + int retval = 0; + + pr_debug("%s: RMI4 function $34 detect\n", __func__); + if (rmifninfo->sensor == NULL) { + printk(KERN_ERR "%s: NULL sensor passed in!", __func__); + return -EINVAL; + } + + /* Store addresses - used elsewhere to read data, + * control, query, etc. */ + rmifninfo->funcDescriptor.queryBaseAddr = fndescr->queryBaseAddr; + rmifninfo->funcDescriptor.commandBaseAddr = fndescr->commandBaseAddr; + rmifninfo->funcDescriptor.controlBaseAddr = fndescr->controlBaseAddr; + rmifninfo->funcDescriptor.dataBaseAddr = fndescr->dataBaseAddr; + rmifninfo->funcDescriptor.interruptSrcCnt = fndescr->interruptSrcCnt; + rmifninfo->funcDescriptor.functionNum = fndescr->functionNum; + + rmifninfo->numSources = fndescr->interruptSrcCnt; + + /* Need to get interrupt info to be used later when handling + interrupts. */ + rmifninfo->interruptRegister = interruptCount/8; + + /* loop through interrupts for each source and or in a bit + to the interrupt mask for each. */ + InterruptOffset = interruptCount % 8; + + for (i = InterruptOffset; + i < ((fndescr->interruptSrcCnt & 0x7) + InterruptOffset); + i++) { + rmifninfo->interruptMask |= 1 << i; + } + + return retval; +} +EXPORT_SYMBOL(FN_34_detect); + +static ssize_t rmi_fn_34_bootloaderid_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata; + + return sprintf(buf, "%u\n", fn34data->bootloaderid); +} + +static ssize_t rmi_fn_34_bootloaderid_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int error; + unsigned long val; + unsigned char uData[2]; + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata; + + /* need to convert the string data to an actual value */ + error = strict_strtoul(buf, 10, &val); + + if (error) + return error; + + fn34data->bootloaderid = val; + + /* Write the Bootloader ID key data back to the first two Block Data registers + (F34_Flash_Data2.0 and F34_Flash_Data2.1).*/ + copyEndianAgnostic(uData, (unsigned short)val); + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr, + uData, 2); + if (error) { + printk(KERN_ERR "%s : Could not write bootloader id to 0x%x\n", + __func__, fn->function->functionDataBaseAddr); + return error; + } + + return count; +} + +static ssize_t rmi_fn_34_blocksize_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata; + + return sprintf(buf, "%u\n", fn34data->blocksize); +} + +static ssize_t rmi_fn_34_blocksize_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + /* Block Size is RO so we shouldn't do anything if the + user space writes to the sysfs file. */ + + return -EPERM; +} + +static ssize_t rmi_fn_34_status_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata; + + return sprintf(buf, "%u\n", fn34data->status); +} + +static ssize_t rmi_fn_34_status_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + /* Status is RO so we shouldn't do anything if the user + app writes to the sysfs file. */ + return -EPERM; +} + +static ssize_t rmi_fn_34_cmd_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata; + + return sprintf(buf, "%u\n", fn34data->cmd); +} + +static ssize_t rmi_fn_34_cmd_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata; + unsigned long val; + unsigned char cmd; + int error; + + /* need to convert the string data to an actual value */ + error = strict_strtoul(buf, 10, &val); + + if (error) + return error; + + fn34data->cmd = val; + + /* determine the proper command to issue. + */ + switch (val) { + case ENABLE_FLASH_PROG: + /* Issue a Flash Program Enable ($0F) command to the Flash Command + (F34_Flash_Data3, bits 3:0) field.*/ + cmd = 0x0F; + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3, + (unsigned char *)&cmd, 1); + if (error) { + printk(KERN_ERR "%s : Could not write Flash Program Enable cmd to 0x%x\n", + __func__, fn->function->functionDataBaseAddr+3); + return error; + } + break; + + case ERASE_ALL: + /* Issue a Erase All ($03) command to the Flash Command + (F34_Flash_Data3, bits 3:0) field.*/ + cmd = 0x03; + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3, + (unsigned char *)&cmd, 1); + if (error) { + printk(KERN_ERR "%s : Could not write Erase All cmd to 0x%x\n", + __func__, fn->function->functionDataBaseAddr+3); + return error; + } + break; + + case ERASE_CONFIG: + /* Issue a Erase Configuration ($07) command to the Flash Command + (F34_Flash_Data3, bits 3:0) field.*/ + cmd = 0x07; + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3, + (unsigned char *)&cmd, 1); + if (error) { + printk(KERN_ERR "%s : Could not write Erase Configuration cmd to 0x%x\n", + __func__, fn->function->functionDataBaseAddr+3); + return error; + } + break; + + case WRITE_FW_BLOCK: + /* Issue a Write Firmware Block ($02) command to the Flash Command + (F34_Flash_Data3, bits 3:0) field.*/ + cmd = 0x02; + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3, + (unsigned char *)&cmd, 1); + if (error) { + printk(KERN_ERR "%s : Could not write Write Firmware Block cmd to 0x%x\n", + __func__, fn->function->functionDataBaseAddr+3); + return error; + } + break; + + case WRITE_CONFIG_BLOCK: + /* Issue a Write Config Block ($06) command to the Flash Command + (F34_Flash_Data3, bits 3:0) field.*/ + cmd = 0x06; + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3, + (unsigned char *)&cmd, 1); + if (error) { + printk(KERN_ERR "%s : Could not write Write Config Block cmd to 0x%x\n", + __func__, fn->function->functionDataBaseAddr+3); + return error; + } + break; + + case READ_CONFIG_BLOCK: + /* Issue a Read Config Block ($05) command to the Flash Command + (F34_Flash_Data3, bits 3:0) field.*/ + cmd = 0x05; + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+3, + (unsigned char *)&cmd, 1); + if (error) { + printk(KERN_ERR "%s : Could not write Read Config Block cmd to 0x%x\n", + __func__, fn->function->functionDataBaseAddr+3); + return error; + } + break; + + case DISABLE_FLASH_PROG: + /* Issue a reset command ($01) - this will reboot the sensor and ATTN will now go to + the Fn $01 instead of the Fn $34 since the sensor will no longer be in Flash mode. */ + cmd = 0x01; + /*if ((error = rmi_write_multiple(fn->sensor, fn->sensor->sensorCommandBaseAddr, + (unsigned char *)&cmd, 1))) { + printk(KERN_ERR "%s : Could not write Reset cmd to 0x%x\n", + __func__, fn->sensor->sensorCommandBaseAddr); + return error; + }*/ + break; + + default: + pr_debug("%s: RMI4 function $34 - unknown command.\n", __func__); + break; + } + + return count; +} + +static ssize_t rmi_fn_34_data_read(struct kobject *kobj, + char *buf, loff_t pos, size_t count) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct rmi_function_device *fn = dev_get_drvdata(dev); + int error; + + /* TODO: add check for count to verify it's the correct blocksize */ + + /* read the data from flash into buf. */ + /* the app layer will be blocked at reading from the sysfs file. */ + /* when we return the count (or error if we fail) the app will resume. */ + error = rmi_read_multiple(fn->sensor, fn->function->functionDataBaseAddr+pos, + (unsigned char *)buf, count); + if (error) { + printk(KERN_ERR "%s : Could not read data from 0x%llx\n", + __func__, fn->function->functionDataBaseAddr+pos); + return error; + } + + return count; +} + +static ssize_t rmi_fn_34_data_write(struct kobject *kobj, + const char *buf, loff_t pos, size_t count) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct rmi_function_device *fn = dev_get_drvdata(dev); + struct rmi_fn_34_data *fn34data = (struct rmi_fn_34_data *)fn->rfi->fndata; + unsigned int blocknum; + int error; + + /* write the data from buf to flash. */ + /* the app layer will be blocked at writing to the sysfs file. */ + /* when we return the count (or error if we fail) the app will resume. */ + + /* TODO: Add check on count - if non-zero veriy it's the correct blocksize */ + + /* Verify that the byte offset is always aligned on a block boundary and if not + return an error. We can't just use the mod operator % and do a (pos % fn34data->blocksize) because of a gcc + bug that results in undefined symbols. So we have to compute it the hard + way. Grumble. */ + unsigned int remainder; + div_u64_rem(pos, fn34data->blocksize, &remainder); + if (remainder) { + printk(KERN_ERR "%s : Invalid byte offset of %llx leads to invalid block number.\n", + __func__, pos); + return -EINVAL; + } + + /* Compute the block number using the byte offset (pos) and the block size. + once again, we can't just do a divide due to a gcc bug. */ + blocknum = div_u64(pos, fn34data->blocksize); + + /* Write the block number first */ + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr, + (unsigned char *)&blocknum, 2); + if (error) { + printk(KERN_ERR "%s : Could not write block number to 0x%x\n", + __func__, fn->function->functionDataBaseAddr); + return error; + } + + /* Write the data block - only if the count is non-zero */ + if (count) { + error = rmi_write_multiple(fn->sensor, fn->function->functionDataBaseAddr+2, + (unsigned char *)buf, count); + if (error) { + printk(KERN_ERR "%s : Could not write block data to 0x%x\n", + __func__, fn->function->functionDataBaseAddr+2); + return error; + } + } + + return count; +} diff --git a/drivers/input/touchscreen/rmi_f34.h b/drivers/input/touchscreen/rmi_f34.h new file mode 100755 index 0000000..48293e3 --- /dev/null +++ b/drivers/input/touchscreen/rmi_f34.h @@ -0,0 +1,50 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) Function $34 header. + * Copyright (c) 2007 - 2011, Synaptics Incorporated + * + * There is only one function $34 for each RMI4 sensor. This will be + * the function that is used to reflash the firmware and get the + * boot loader address and the boot image block size. + * + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ +#ifndef _RMI_FUNCTION_34_H +#define _RMI_FUNCTION_34_H + +/* define fn $34 commands */ +#define WRITE_FW_BLOCK 2 +#define ERASE_ALL 3 +#define READ_CONFIG_BLOCK 5 +#define WRITE_CONFIG_BLOCK 6 +#define ERASE_CONFIG 7 +#define ENABLE_FLASH_PROG 15 +#define DISABLE_FLASH_PROG 16 + +void FN_34_inthandler(struct rmi_function_info *rmifninfo, + unsigned int assertedIRQs); +int FN_34_config(struct rmi_function_info *rmifninfo); +int FN_34_init(struct rmi_function_device *function_device); +int FN_34_detect(struct rmi_function_info *rmifninfo, + struct rmi_function_descriptor *fndescr, + unsigned int interruptCount); +void FN_34_attention(struct rmi_function_info *rmifninfo); + +#endif diff --git a/drivers/input/touchscreen/rmi_function.c b/drivers/input/touchscreen/rmi_function.c new file mode 100755 index 0000000..45938bc --- /dev/null +++ b/drivers/input/touchscreen/rmi_function.c @@ -0,0 +1,304 @@ +/** + * Synaptics Register Mapped Interface (RMI4) - RMI Function Module. + * Copyright (C) 2007 - 2011, Synaptics Incorporated + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +static const char functionname[10] = "fn"; + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/hrtimer.h> +#include <linux/miscdevice.h> +#include <linux/fs.h> +#include <linux/delay.h> +#include <linux/uaccess.h> +#include <linux/slab.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/input.h> +#include <linux/interrupt.h> + +#include "rmi_drvr.h" +#include "rmi_function.h" +#include "rmi_bus.h" +#include "rmi_sensor.h" + +/* supported RMI4 functions list - controls what we + * will provide support for - if it's not in the list then + * the developer needs to add support functions for it.*/ +static LIST_HEAD(fns_list); +static DEFINE_MUTEX(fns_mutex); + +/* NOTE: Developer - add in any new RMI4 fn data info - function number + * and ptrs to report, config, init and detect functions. This data is + * used to point to the functions that need to be called to config, init, + * detect and report data for the new RMI4 function. Refer to the RMI4 + * specification for information on RMI4 functions. + */ +/* TODO: This will eventually go away, and each function will be an independent + * module. */ +static struct rmi_functions_data + rmi4_supported_data_src_functions[rmi4_num_supported_data_src_fns] = { + /* Fn $11 - 2D sensing */ + {.functionNumber = 0x11, .inthandlerFn = FN_11_inthandler, .configFn = FN_11_config, .initFn = FN_11_init, .detectFn = FN_11_detect, .attnFn = NULL}, + /* Fn $01 - device control */ + {.functionNumber = 0x01, .inthandlerFn = FN_01_inthandler, .configFn = FN_01_config, .initFn = FN_01_init, .detectFn = FN_01_detect, .attnFn = FN_01_attention}, + /* Fn $34 - firmware reflash */ + {.functionNumber = 0x34, .inthandlerFn = FN_34_inthandler, .configFn = FN_34_config, .initFn = FN_34_init, .detectFn = FN_34_detect, .attnFn = FN_34_attention}, +}; + + +/* This function is here to provide a way for external modules to access the + * functions list. It will try to find a matching function base on the passed + * in RMI4 function number and return the pointer to the struct rmi_functions + * if a match is found or NULL if not found. + */ +struct rmi_functions *rmi_find_function(int functionNum) +{ + struct rmi_functions *fn; + bool found = false; + + list_for_each_entry(fn, &fns_list, link) { + if (functionNum == fn->functionNum) { + found = true; + break; + } + } + + if (!found) + return NULL; + else + return fn; +} +EXPORT_SYMBOL(rmi_find_function); + + +static void rmi_function_config(struct rmi_function_device *function) +{ + printk(KERN_DEBUG "%s: rmi_function_config", __func__); + +} + +/** + * This is the probe function passed to the RMI4 subsystem that gives us a + * chance to recognize an RMI4 function. + */ +static int rmi_function_probe(struct rmi_function_driver *function) +{ + struct rmi_phys_driver *rpd; + + rpd = function->rpd; + + if (!rpd) { + printk(KERN_ERR "%s: Invalid rmi physical driver - null ptr.", __func__); + return 0; + } + + return 1; +} + +/** Just a stub for now. + */ +static int rmi_function_suspend(struct device *dev, pm_message_t state) +{ + printk(KERN_INFO "%s: function suspend called.", __func__); + return 0; +} + +/** Just a stub for now. + */ +static int rmi_function_resume(struct device *dev) +{ + printk(KERN_INFO "%s: function resume called.", __func__); + return 0; +} + +int rmi_function_register_driver(struct rmi_function_driver *drv, int fnNumber) +{ + int retval; + char *drvrname; + + printk(KERN_INFO "%s: Registering function driver for F%02x.\n", __func__, fnNumber); + + retval = 0; + + /* Create a function device and function driver for this Fn */ + drvrname = kzalloc(sizeof(functionname) + 4, GFP_KERNEL); + if (!drvrname) { + printk(KERN_ERR "%s: Error allocating memeory for rmi_function_driver name.\n", __func__); + return -ENOMEM; + } + sprintf(drvrname, "fn%02x", fnNumber); + + drv->drv.name = drvrname; + drv->module = drv->drv.owner; + + drv->drv.suspend = rmi_function_suspend; + drv->drv.resume = rmi_function_resume; + + /* register the sensor driver */ + retval = driver_register(&drv->drv); + if (retval) { + printk(KERN_ERR "%s: Failed driver_register %d\n", + __func__, retval); + } + + return retval; +} +EXPORT_SYMBOL(rmi_function_register_driver); + +void rmi_function_unregister_driver(struct rmi_function_driver *drv) +{ + printk(KERN_INFO "%s: Unregistering function driver.\n", __func__); + + driver_unregister(&drv->drv); +} +EXPORT_SYMBOL(rmi_function_unregister_driver); + +int rmi_function_register_device(struct rmi_function_device *function_device, int fnNumber) +{ + struct input_dev *input; + int retval; + + printk(KERN_INFO "%s: Registering function device for F%02x.\n", __func__, fnNumber); + + retval = 0; + + /* make name - fn11, fn19, etc. */ + dev_set_name(&function_device->dev, "%sfn%02x", function_device->sensor->drv.name, fnNumber); + dev_set_drvdata(&function_device->dev, function_device); + retval = device_register(&function_device->dev); + if (retval) { + printk(KERN_ERR "%s: Failed device_register for function device.\n", + __func__); + return retval; + } + + input = input_allocate_device(); + if (input == NULL) { + printk(KERN_ERR "%s: Failed to allocate memory for a " + "new input device.\n", + __func__); + return -ENOMEM; + } + + input->name = dev_name(&function_device->dev); + input->phys = "rmi_function"; + function_device->input = input; + + + /* init any input specific params for this function */ + function_device->rmi_funcs->init(function_device); + + retval = input_register_device(input); + + if (retval) { + printk(KERN_ERR "%s: Failed input_register_device.\n", + __func__); + return retval; + } + + + rmi_function_config(function_device); + + return retval; +} +EXPORT_SYMBOL(rmi_function_register_device); + +void rmi_function_unregister_device(struct rmi_function_device *dev) +{ + printk(KERN_INFO "%s: Unregistering function device.n", __func__); + + input_unregister_device(dev->input); + device_unregister(&dev->dev); +} +EXPORT_SYMBOL(rmi_function_unregister_device); + +static int __init rmi_function_init(void) +{ + struct rmi_functions_data *rmi4_fn; + int i; + + printk(KERN_DEBUG "%s: RMI Function Init\n", __func__); + + /* Initialize global list of RMI4 Functions. + We need to add the supported RMI4 funcions so that we will have + pointers to the associated functions for init, config, report and + detect. See rmi.h for more details. The developer will add a new + RMI4 function number in the array in rmi_drvr.h, then add a new file to + the build (called rmi_fXX.c where XX is the hex number for + the added RMI4 function). The rest should be automatic. + */ + + /* for each function number defined in rmi.h creat a new rmi_function + struct and initialize the pointers to the servicing functions and then + add it into the global list for function support. + */ + for (i = 0; i < rmi4_num_supported_data_src_fns; i++) { + /* Add new rmi4 function struct to list */ + struct rmi_functions *fn = kzalloc(sizeof(*fn), GFP_KERNEL); + if (!fn) { + printk(KERN_ERR "%s: could not allocate memory " + "for rmi_function struct for function 0x%x\n", + __func__, + rmi4_supported_data_src_functions[i].functionNumber); + return -ENOMEM; + } else { + + rmi4_fn = &rmi4_supported_data_src_functions[i]; + fn->functionNum = rmi4_fn->functionNumber; + /* Fill in ptrs to functions. The functions are + linked in from a file called rmi_fxx.c + where xx is the hex number of the RMI4 function + from the RMI4 spec. Also, the function prototypes + need to be added to rmi_fxx.h - also where + xx is the hex number of the RMI4 function. So + that you don't get compile errors and that new + header needs to be included in the rmi_function.h + */ + fn->inthandler = rmi4_fn->inthandlerFn; + fn->config = rmi4_fn->configFn; + fn->init = rmi4_fn->initFn; + fn->detect = rmi4_fn->detectFn; + fn->attention = rmi4_fn->attnFn; + + /* Add the new fn to the global list */ + mutex_lock(&fns_mutex); + list_add_tail(&fn->link, &fns_list); + mutex_unlock(&fns_mutex); + } + } + + return 0; +} + +static void __exit rmi_function_exit(void) +{ + printk(KERN_DEBUG "%s: RMI Function Exit\n", __func__); +} + + +module_init(rmi_function_init); +module_exit(rmi_function_exit); + +MODULE_AUTHOR("Synaptics, Inc."); +MODULE_DESCRIPTION("RMI4 Function Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/rmi_function.h b/drivers/input/touchscreen/rmi_function.h new file mode 100755 index 0000000..b17ffef --- /dev/null +++ b/drivers/input/touchscreen/rmi_function.h @@ -0,0 +1,229 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) Function Device Header File. + * Copyright (c) 2007 - 2011, Synaptics Incorporated + * + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#ifndef _RMI_FUNCTION_H +#define _RMI_FUNCTION_H + +#include <linux/input.h> +#include <linux/device.h> + + +/* For each function present on the RMI device, there will be a corresponding + * entry in the functions list of the rmi_sensor_driver structure. This entry + * gives information about the number of data sources and the number of data + * registers associated with the function. + */ +struct rmi_function_info { + /* The sensor this function belongs to. + */ + struct rmi_sensor_driver *sensor; + + /* A device associated with this function. + */ + struct rmi_function_device *function_device; + + unsigned char functionNum; + + /* This is the number of data sources associated with the function.*/ + unsigned char numSources; + + /* This is the number of data registers to read.*/ + unsigned char dataRegBlockSize; + + /* This is the interrupt register and mask - needed for enabling the + * interrupts and for checking what source had caused the attention line + * interrupt. + */ + unsigned char interruptRegister; + unsigned char interruptMask; + + /* This is the RMI function descriptor associated with this function. + * It contains the Base addresses for the functions query, command, + * control, and data registers. + */ + struct rmi_function_descriptor funcDescriptor; + + /* pointer to data specific to a functions implementation. */ + void *fndata; + + /* A list of the function information. + * This list uses the standard kernel linked list implementation. + * Documentation on on how to use it can be found at + * http://isis.poly.edu/kulesh/stuff/src/klist/. + */ + struct list_head link; +}; + + +/* This struct is for creating a list of RMI4 functions that have data sources +associated with them. This is to facilitate adding new support for other +data sources besides 2D sensors. +To add a new data source support, the developer will create a new file +and add these 4 functions below with FN$## in front of the names - where +## is the hex number for the function taken from the RMI4 specification. + +The function number will be associated with this and later will be used to +match the RMI4 function to the 4 functions for that RMI4 function number. +The user will also have to add code that adds the new rmi_functions item +to the global list of RMI4 functions and stores the pointers to the 4 +functions in the function pointers. + */ +struct rmi_functions { + unsigned char functionNum; + + /* Pointers to function specific functions for interruptHandler, config, init + , detect and attention. */ + /* These ptrs. need to be filled in for every RMI4 function that has + data source(s) associated with it - like fn $11 (2D sensors), + fn $19 (buttons), etc. Each RMI4 function that has data sources + will be added into a list that is used to match the function + number against the number stored here. + */ + /* The sensor implementation will call this whenever and IRQ is + * dispatched that this function is interested in. + */ + void (*inthandler)(struct rmi_function_info *rfi, unsigned int assertedIRQs); + + int (*config)(struct rmi_function_info *rmifninfo); + int (*init)(struct rmi_function_device *function_device); + int (*detect)(struct rmi_function_info *rmifninfo, + struct rmi_function_descriptor *fndescr, + unsigned int interruptCount); + /** If this is non-null, the sensor implemenation will call this + * whenever the ATTN line is asserted. + */ + void (*attention)(struct rmi_function_info *rmifninfo); + + + /* Standard kernel linked list implementation. + * Documentation on how to use it can be found at + * http://isis.poly.edu/kulesh/stuff/src/klist/. + */ + struct list_head link; +}; + + +/* Each time a new RMI4 function support is added the developer needs to +bump the number of supported functions and add the info for +that RMI4 function to the array along with pointers to the report, +config, init and detect functions that they coded in rmi_fxx.c +and rmi_fxx.h - where xx is the RMI4 function number in hex for the new +RMI4 data source function. The information for the RMI4 functions is +obtained from the RMI4 specification document. + */ +#define rmi4_num_supported_data_src_fns 3 + +/* add hdr files for all prototypes for RMI4 data source +functions being supported. */ +#include "rmi_f01.h" +#include "rmi_f11.h" +#include "rmi_f34.h" + +typedef void(*inthandlerFuncPtr)(struct rmi_function_info *rfi, unsigned int assertedIRQs); +typedef int(*configFuncPtr)(struct rmi_function_info *rmifninfo); +typedef int(*initFuncPtr)(struct rmi_function_device *function_device); +typedef int(*detectFuncPtr)(struct rmi_function_info *rmifninfo, + struct rmi_function_descriptor *fndescr, + unsigned int interruptCount); +typedef void (*attnFuncPtr)(struct rmi_function_info *rmifninfo); + +struct rmi_functions_data { + int functionNumber; + inthandlerFuncPtr inthandlerFn; + configFuncPtr configFn; + initFuncPtr initFn; + detectFuncPtr detectFn; + attnFuncPtr attnFn; +}; + + +struct rmi_functions *rmi_find_function(int functionNum); +int rmi_functions_init(struct input_dev *inputdev); + +struct rmi_function_driver { + struct module *module; + struct device_driver drv; + + /* Probe Function + * This function is called to give the function driver layer an + * opportunity to claim an RMI function. + */ + int (*probe)(struct rmi_function_driver *function); + /* Config Function + * This function is called after a successful probe. It gives the + * function driver an opportunity to query and/or configure an RMI + * function before data starts flowing. + */ + void (*config)(struct rmi_function_driver *function); + + unsigned short functionQueryBaseAddr; /* RMI4 function control */ + unsigned short functionControlBaseAddr; + unsigned short functionCommandBaseAddr; + unsigned short functionDataBaseAddr; + unsigned int interruptRegisterOffset; /* offset from start of interrupt registers */ + unsigned int interruptMask; + + /* pointer to the corresponding phys driver info for this sensor */ + /* The phys driver has the pointers to read, write, etc. */ + /* Probably don't need it here - used down in bus driver and sensor driver */ + struct rmi_phys_driver *rpd; + + /* Standard kernel linked list implementation. + * Documentation on how to use it can be found at + * http://isis.poly.edu/kulesh/stuff/src/klist/. + */ + struct list_head function_drivers; /* link function drivers into list */ +}; + +struct rmi_function_device { + struct rmi_function_driver *function; + struct device dev; + struct input_dev *input; + struct rmi_sensor_driver *sensor; /* need this to be bound to phys driver layer */ + + /* the function ptrs to the config, init, detect and + report fns for this rmi function device. */ + struct rmi_functions *rmi_funcs; + struct rmi_function_info *rfi; + + /** An RMI sensor might actually have several IRQ registers - + * this tells us which IRQ register this function is interested in. + */ + unsigned int irqRegisterSet; + + /** This is a mask of the IRQs the function is interested in. + */ + unsigned int irqMask; + + /* Standard kernel linked list implementation. + * Documentation on how to use it can be found at + * http://isis.poly.edu/kulesh/stuff/src/klist/. + */ + struct list_head functions; /* link functions into list */ +}; + +int rmi_function_register_device(struct rmi_function_device *dev, int fnNumber); + +#endif diff --git a/drivers/input/touchscreen/rmi_function_11.c b/drivers/input/touchscreen/rmi_function_11.c deleted file mode 100644 index ab63f4c..0000000 --- a/drivers/input/touchscreen/rmi_function_11.c +++ /dev/null @@ -1,439 +0,0 @@ -/** - * - * Synaptics Register Mapped Interface (RMI4) Function $11 support for 2D. - * Copyright (c) 2007 - 2010, Synaptics Incorporated - * - * For every RMI4 function that has a data source - like 2D sensors, - * buttons, LEDs, GPIOs, etc. - the user will create a new rmi_function_xx.c - * file and add these functions to perform the config(), init(), report() - * and detect() functionality. The function pointers are then srored under - * the RMI function info and these functions will automatically be called by - * the global config(), init(), report() and detect() functions that will - * loop through all data sources and call the data sources functions using - * these functions pointed to by the function ptrs. - */ -/* - * This file is licensed under the GPL2 license. - * - *############################################################################# - * GPL - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - *############################################################################# - */ - -#include <linux/kernel.h> -#include <linux/device.h> -#include <linux/delay.h> -#include <linux/kthread.h> -#include <linux/freezer.h> -#include <linux/input.h> - -#include "rmi.h" -#include "rmi_core.h" -#include "rmi_functions.h" - -extern unsigned short fn01ControlBaseAddr; /* RMI4 device control == function 0x01 */ - -static int sensorMaxX; -static int sensorMaxY; - -/* - * This reads in a sample and reports the function $11 source data to the - * input subsystem. It is used for both polling and interrupt driven - * operation. This is called a lot so don't put in any informational - * printks since they will slow things way down! - */ -int FN_11_report(struct rmi_application *app, - struct rmi_function_info *rfi, struct input_dev *input) -{ - unsigned char values[2] = {0, 0}; - unsigned char data[12] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; - /* number of touch points - fingers down in this case */ - int fingerDownCount; - int X, Y, Z, W, Wy, Wx; - int finger; - int ret; - int fn11FingersSupported; - int fn11FingerRegisters; - unsigned short fn11DataBaseAddr; - unsigned char fn11DataRegBlockSize; - static bool wasdown = false; - - ret = 0; - fingerDownCount = 0; - - /* get 2D sensor finger data */ - - /* First get the finger status field - the size of the finger status field is - determined by the number of fingers supported - 2 bits per finger, so the number - of registers to read is : registerCount = ciel(numberOfFingers/4). - Read the required number of registers and check each 2 bit field to determine - if a finger is down (00 = finger not present, 01 = finger present and data accurate, - 10 = finger present but data may not be accurate, 11 = reserved for product use). - */ - fn11FingersSupported = rfi->numDataPoints; - fn11FingerRegisters = (fn11FingersSupported + 3)/4; - - fn11DataBaseAddr = rfi->funcDescriptor.dataBaseAddr; - - if (rmi_read_multiple(app, fn11DataBaseAddr, values, - fn11FingerRegisters)) { - printk(KERN_ERR "%s: RMI4 function $11 report: " - "Could not read finger status registers 0x%x\n", - __func__, fn11DataBaseAddr); - ret = -ENODEV; - goto err_ret; - } - - /* For each finger present, read the proper number of registers - to get absolute data. */ - fn11DataRegBlockSize = rfi->dataRegBlockSize; - - for (finger = 0; finger < fn11FingersSupported; finger++) { - int reg; - int fingerShift; - int fingerStatus; - - /* determine which data byte the finger status is in */ - reg = finger/4; - /* bit shift to get finger's status */ - fingerShift = (finger % 4) * 2; - fingerStatus = (values[reg] >> fingerShift) & 3; - - /* if finger status indicates a finger is present then - read the finger data and report it */ - if (fingerStatus == 1 || fingerStatus == 2) { - /* number of active touch points not same as - number of supported fingers */ - fingerDownCount++; - - /* Read the finger data */ - if (rmi_read_multiple(app, fn11DataBaseAddr + - ((finger * fn11DataRegBlockSize) + - fn11FingerRegisters), - data, fn11DataRegBlockSize)) { - pr_debug("%s: RMI4 function $11 report: " - "Could not read finger data registers " - "0x%x\n", __func__, - fn11DataBaseAddr + - ((finger * fn11DataRegBlockSize) + - fn11FingerRegisters)); - break; /* failed to read this finger - skip */ - } else { - X = (data[0] & 0x1f) << 4; - X |= data[2] & 0xf; - Y = (data[1] & 0x1f) << 4; - Y |= (data[2] >> 4) & 0xf; - W = data[3]; - - /* upper 4 bits of W are Wy, - lower 4 of W are Wx */ - Wy = (W >> 4) & 0x0f; - Wx = W & 0x0f; - - Z = data[4]; - - /* if this is the first finger report normal - ABS_X, ABS_Y, PRESSURE, TOOL_WIDTH events for - non-MT apps. Apps that support Multi-touch - will ignore these events and use the MT events. - Apps that don't support Multi-touch will still - function. - */ - - if (fingerDownCount == 1) { - input_report_abs(input, ABS_X, X); - input_report_abs(input, ABS_Y, Y); - input_report_abs(input, ABS_PRESSURE, Z); - input_report_abs(input, ABS_TOOL_WIDTH, - max(Wx, Wy)); - input_report_key(input, BTN_TOUCH, 1); - wasdown = true; - } - -#ifdef CONFIG_SYNA_MULTI_TOUCH - /* Report Multi-Touch events for each finger */ - /* major axis of touch area ellipse */ - input_report_abs(input, ABS_MT_TOUCH_MAJOR, - max(Wx, Wy)); - /* minor axis of touch area ellipse */ - input_report_abs(input, ABS_MT_TOUCH_MINOR, - min(Wx, Wy)); - /* Currently only 2 supported - 1 or 0 */ - input_report_abs(input, ABS_MT_ORIENTATION, - (Wx > Wy ? 1 : 0)); - input_report_abs(input, ABS_MT_POSITION_X, X); - input_report_abs(input, ABS_MT_POSITION_Y, Y); - - /* TODO: Tracking ID needs to be reported but not used yet. */ - /* Could be formed by keeping an id per position and assiging */ - /* a new id when fingerStatus changes for that position.*/ - input_report_abs(input, ABS_MT_TRACKING_ID, - finger+1); - - /* MT sync between fingers */ - input_mt_sync(input); -#endif - } - } - } - - /* if we had a finger down before and now we don't have any send a button up. */ - if ((fingerDownCount == 0) && wasdown) { - wasdown = false; - input_report_key(input, BTN_TOUCH, 0); - } - - input_sync(input); /* sync after groups of events */ - -err_ret: - - return ret; -} - -int FN_11_config(struct rmi_application *app, struct rmi_function_info *rfi) -{ - /* For the data source - print info and do any - source specific configuration. */ - unsigned char data[14]; - int retval = 0; - - pr_debug("%s: RMI4 function $11 config\n", __func__); - - /* Get and print some info about the data source... */ - - /* To Query 2D devices we need to read from the address obtained - * from the function descriptor stored in the RMI function info. - */ - retval = rmi_read_multiple(app, rfi->funcDescriptor.queryBaseAddr, - data, 9); - if (retval) { - printk(KERN_ERR "%s: RMI4 function $11 config:" - "Could not read function query registers 0x%x\n", - __func__, rfi->funcDescriptor.queryBaseAddr); - } else { - pr_debug("%s: Number of Fingers: %d\n", - __func__, data[1] & 7); - pr_debug("%s: Is Configurable: %d\n", - __func__, data[1] & (1 << 7) ? 1 : 0); - pr_debug("%s: Has Gestures: %d\n", - __func__, data[1] & (1 << 5) ? 1 : 0); - pr_debug("%s: Has Absolute: %d\n", - __func__, data[1] & (1 << 4) ? 1 : 0); - pr_debug("%s: Has Relative: %d\n", - __func__, data[1] & (1 << 3) ? 1 : 0); - - pr_debug("%s: Number X Electrodes: %d\n", - __func__, data[2] & 0x1f); - pr_debug("%s: Number Y Electrodes: %d\n", - __func__, data[3] & 0x1f); - pr_debug("%s: Maximum Electrodes: %d\n", - __func__, data[4] & 0x1f); - - pr_debug("%s: Absolute Data Size: %d\n", - __func__, data[5] & 3); - - pr_debug("%s: Has XY Dist: %d\n", - __func__, data[7] & (1 << 7) ? 1 : 0); - pr_debug("%s: Has Pinch: %d\n", - __func__, data[7] & (1 << 6) ? 1 : 0); - pr_debug("%s: Has Press: %d\n", - __func__, data[7] & (1 << 5) ? 1 : 0); - pr_debug("%s: Has Flick: %d\n", - __func__, data[7] & (1 << 4) ? 1 : 0); - pr_debug("%s: Has Early Tap: %d\n", - __func__, data[7] & (1 << 3) ? 1 : 0); - pr_debug("%s: Has Double Tap: %d\n", - __func__, data[7] & (1 << 2) ? 1 : 0); - pr_debug("%s: Has Tap and Hold: %d\n", - __func__, data[7] & (1 << 1) ? 1 : 0); - pr_debug("%s: Has Tap: %d\n", - __func__, data[7] & 1 ? 1 : 0); - pr_debug("%s: Has Palm Detect: %d\n", - __func__, data[8] & 1 ? 1 : 0); - pr_debug("%s: Has Rotate: %d\n", - __func__, data[8] & (1 << 1) ? 1 : 0); - - retval = rmi_read_multiple(app, - rfi->funcDescriptor.controlBaseAddr, data, 14); - if (retval) { - printk(KERN_ERR "%s: RMI4 function $11 config:" - "Could not read control registers 0x%x\n", - __func__, rfi->funcDescriptor.controlBaseAddr); - return retval; - } - - /* Store these for use later...*/ - sensorMaxX = ((data[6] & 0x1f) << 8) | ((data[7] & 0xff) << 0); - sensorMaxY = ((data[8] & 0x1f) << 8) | ((data[9] & 0xff) << 0); - - pr_debug("%s: Sensor Max X: %d\n", __func__, sensorMaxX); - pr_debug("%s: Sensor Max Y: %d\n", __func__, sensorMaxY); - } - - return retval; -} - -/* Initialize any function $11 specific params and settings - input - * settings, device settings, etc. - */ -int FN_11_init(struct input_dev *input) -{ - pr_debug("%s: RMI4 function $11 init\n", __func__); - - /* need to init the input abs params for the 2D */ - input->evbit[0] = BIT(EV_ABS); - - /* Use the max X and max Y read from the device...*/ - input_set_abs_params(input, ABS_X, 0, sensorMaxX, 0, 0); - input_set_abs_params(input, ABS_Y, 0, sensorMaxY, 0, 0); - input_set_abs_params(input, ABS_PRESSURE, 0, 255, 0, 0); - input_set_abs_params(input, ABS_TOOL_WIDTH, 0, 15, 0, 0); - -#ifdef CONFIG_SYNA_MULTI_TOUCH - input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 15, 0, 0); - input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 15, 0, 0); - input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0); - input_set_abs_params(input, ABS_MT_TRACKING_ID, 1, 10, 0, 0); - input_set_abs_params(input, ABS_MT_POSITION_X, 0, sensorMaxX, 0, 0); - input_set_abs_params(input, ABS_MT_POSITION_Y, 0, sensorMaxY, 0, 0); -#endif - - return 0; -} - -int FN_11_detect(struct rmi_application *app, struct rmi_function_info *rfi, - struct rmi_function_descriptor *fd, unsigned int interruptCount) -{ - char fn11Queries[9]; - int i; - unsigned short fn11InterruptOffset; - unsigned char fn11AbsDataSize; - unsigned char fn11AbsDataBlockSize; - int fn11HasPinch, fn11HasFlick, fn11HasTap; - int fn11HasTapAndHold, fn11HasDoubleTap; - int fn11HasEarlyTap, fn11HasPress; - int fn11HasPalmDetect, fn11HasRotate; - int fn11HasRel; - unsigned char f11_egr_0, f11_egr_1; - unsigned int fn11AllDataBlockSize; - int retval = 0; - - pr_debug("%s: RMI4 function $11 detect\n", __func__); - - /* Store addresses - used elsewhere to read data, - * control, query, etc. */ - rfi->funcDescriptor.queryBaseAddr = fd->queryBaseAddr; - rfi->funcDescriptor.commandBaseAddr = fd->commandBaseAddr; - rfi->funcDescriptor.controlBaseAddr = fd->controlBaseAddr; - rfi->funcDescriptor.dataBaseAddr = fd->dataBaseAddr; - rfi->funcDescriptor.interruptSrcCnt = fd->interruptSrcCnt; - rfi->funcDescriptor.functionNum = fd->functionNum; - - rfi->numSources = fd->interruptSrcCnt; - - /* need to get number of fingers supported, data size, etc. - - to be used when getting data since the number of registers to - read depends on the number of fingers supported and data size. */ - retval = rmi_read_multiple(app, fd->queryBaseAddr, fn11Queries, - sizeof(fn11Queries)); - if (retval) { - printk(KERN_ERR "%s: RMI4 function $11 detect: " - "Could not read function query registers 0x%x\n", - __func__, rfi->funcDescriptor.queryBaseAddr); - return retval; - } - - /* 2D data sources have only 3 bits for the number of fingers - supported - so the encoding is a bit wierd. */ - rfi->numDataPoints = 2; /* default number of fingers supported */ - if ((fn11Queries[1] & 0x7) <= 4) - /* add 1 since zero based */ - rfi->numDataPoints = (fn11Queries[1] & 0x7) + 1; - else { - /* a value of 5 is up to 10 fingers - 6 and 7 are reserved - (shouldn't get these i int retval;n a normal 2D source). */ - if ((fn11Queries[1] & 0x7) == 5) - rfi->numDataPoints = 10; - } - - /* Need to get interrupt info to be used later when handling - interrupts. */ - rfi->interruptRegister = (interruptCount + 7)/8; - - /* loop through interrupts for each source in fn $11 and or in a bit - to the interrupt mask for each. */ - fn11InterruptOffset = interruptCount % 8; - - for (i = fn11InterruptOffset; - i < ((fd->interruptSrcCnt & 0x7) + fn11InterruptOffset); - i++) - rfi->interruptMask |= 1 << i; - - /* Size of just the absolute data for one finger */ - fn11AbsDataSize = fn11Queries[5] & 0x03; - /* One each for X and Y, one for LSB for X & Y, one for W, one for Z */ - fn11AbsDataBlockSize = 3 + (2 * (fn11AbsDataSize == 0 ? 1 : 0)); - rfi->dataRegBlockSize = fn11AbsDataBlockSize; - - /* need to determine the size of data to read - this depends on - conditions such as whether Relative data is reported and if Gesture - data is reported. */ - f11_egr_0 = fn11Queries[7]; - f11_egr_1 = fn11Queries[8]; - - /* Get info about what EGR data is supported, whether it has - Relative data supported, etc. */ - fn11HasPinch = f11_egr_0 & 0x40; - fn11HasFlick = f11_egr_0 & 0x10; - fn11HasTap = f11_egr_0 & 0x01; - fn11HasTapAndHold = f11_egr_0 & 0x02; - fn11HasDoubleTap = f11_egr_0 & 0x04; - fn11HasEarlyTap = f11_egr_0 & 0x08; - fn11HasPress = f11_egr_0 & 0x20; - fn11HasPalmDetect = f11_egr_1 & 0x01; - fn11HasRotate = f11_egr_1 & 0x02; - fn11HasRel = fn11Queries[1] & 0x08; - - /* Size of all data including finger status, absolute data for each - finger, relative data and EGR data */ - fn11AllDataBlockSize = - /* finger status, four fingers per register */ - ((rfi->numDataPoints + 3) / 4) + - /* absolute data, per finger times number of fingers */ - (fn11AbsDataBlockSize * rfi->numDataPoints) + - /* two relative registers (if relative is being reported) */ - 2 * fn11HasRel + - /* F11_2D_Data8 is only present if the egr_0 - register is non-zero. */ - !!(f11_egr_0) + - /* F11_2D_Data9 is only present if either egr_0 or - egr_1 registers are non-zero. */ - (f11_egr_0 || f11_egr_1) + - /* F11_2D_Data10 is only present if EGR_PINCH or EGR_FLICK of - egr_0 reports as 1. */ - !!(fn11HasPinch | fn11HasFlick) + - /* F11_2D_Data11 and F11_2D_Data12 are only present if - EGR_FLICK of egr_0 reports as 1. */ - 2 * !!(fn11HasFlick); - - /* Disable Interrupts. It is up to the Application Driver to - * turn them on when it's ready for them. */ - retval = rmi_write(app, - fn01ControlBaseAddr + 1 + rfi->interruptRegister, 0); - if (!retval) { - printk(KERN_ERR "%s: Function $11 Interrupt Disable Fail: %d\n", - __func__, retval); - } - - return retval; -} diff --git a/drivers/input/touchscreen/rmi_function_11.h b/drivers/input/touchscreen/rmi_function_11.h deleted file mode 100644 index e90d889..0000000 --- a/drivers/input/touchscreen/rmi_function_11.h +++ /dev/null @@ -1,43 +0,0 @@ -/** - * - * Synaptics Register Mapped Interface (RMI4) Function $11 support for 2D. - * Copyright (c) 2007 - 2010, Synaptics Incorporated - * - * For every RMI4 function that has a data source - like 2D sensors, - * buttons, LEDs, GPIOs, etc. - the user will create a new rmi_function_xx.c - * file and add these functions to perform the config(), init(), report() - * and detect() functionality. The function pointers are then srored under - * the RMI function info and these functions will automatically be called by - * the global config(), init(), report() and detect() functions that will - * loop through all data sources and call the data sources functions using - * these functions pointed to by the function ptrs. - */ -/* - * This file is licensed under the GPL2 license. - * - *############################################################################# - * GPL - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - *############################################################################# - */ -#ifndef _RMI_FUNCTION_11_H -#define _RMI_FUNCTION_11_H - -int FN_11_report(struct rmi_application *app, struct rmi_function_info *rfi, - struct input_dev *input); -int FN_11_config(struct rmi_application *app, struct rmi_function_info *rfi); -int FN_11_init(struct input_dev *input); -int FN_11_detect(struct rmi_application *app, struct rmi_function_info *rfi, - struct rmi_function_descriptor *fd, - unsigned int interruptCount); - -#endif diff --git a/drivers/input/touchscreen/rmi_functions.h b/drivers/input/touchscreen/rmi_functions.h deleted file mode 100644 index 75f1ded..0000000 --- a/drivers/input/touchscreen/rmi_functions.h +++ /dev/null @@ -1,111 +0,0 @@ - -/** - * - * Synaptics Register Mapped Interface (RMI4) Functions Definition Header File. - * Copyright (c) 2007 - 2010, Synaptics Incorporated - * - * - */ -/* - * This file is licensed under the GPL2 license. - * - *############################################################################# - * GPL - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - *############################################################################# - */ - -#ifndef _RMI_FUNCTIONS_H -#define _RMI_FUNCTIONS_H - -/* This struct is for creating a list of RMI4 functions that have data sources - associated with them. This is to facilitate adding new support for other - data sources besides 2D sensors. - To add a new data source support, the developer will create a new file - and add these 4 functions below with FN$## in front of the names - where - ## is the hex number for the function taken from the RMI4 specification. - - The function number will be associated with this and later will be used to - match the RMI4 function to the 4 functions for that RMI4 function number. - - The user will also have to add code that adds the new rmi_functions item - to the global list of RMI4 functions and stores the pointers to the 4 - functions in the function pointers. -*/ -struct rmi_functions { - unsigned char functionNum; - - struct input_dev *input; - - /* Pointers to function specific functions for report, config, init - and detect. */ - /* These ptrs. need to be filled in for every RMI4 function that has - data source(s) associated with it - like fn $11 (2D sensors), - fn $19 (buttons), etc. Each RMI4 function that has data sources - will be added into a list that is used to match the function - number against the number stored here. - */ - int (*report)(struct rmi_application *app, - struct rmi_function_info *rfi, struct input_dev *input); - int (*config)(struct rmi_application *app, - struct rmi_function_info *rfi); - int (*init)(struct input_dev *input); - int (*detect)(struct rmi_application *app, - struct rmi_function_info *rfi, - struct rmi_function_descriptor *fd, - unsigned int interruptCount); - - /* Standard kernel linked list implementation. - * Documentation on how to use it can be found at - * http://isis.poly.edu/kulesh/stuff/src/klist/. - */ - struct list_head link; -}; - - -/* Each time a new RMI4 function support is added the developer needs to - bump the number of supported data src functions and add the info for - that RMI4 function to the array along with pointers to the report, - config, init and detect functions that they coded in rmi_function_xx.c - and rmi_function_xx.h - where xx is the RMI4 function number for the new - RMI4 data source function. The information for the RMI4 functions is - obtained from the RMI4 specification document. -*/ -#define rmi4_num_supported_data_src_fns 1 - -/* add hdr files for all prototypes for RMI4 data source - functions being supported. */ -#include "rmi_function_11.h" -/* #include "rmi_function_19.h" */ - -typedef int(*reportFuncPtr)(struct rmi_application *app, - struct rmi_function_info *rfi, struct input_dev *input); -typedef int(*configFuncPtr)(struct rmi_application *app, - struct rmi_function_info *rfi); -typedef int(*initFuncPtr)(struct input_dev *input); -typedef int(*detectFuncPtr)(struct rmi_application *app, - struct rmi_function_info *rfi, struct rmi_function_descriptor *fd, - unsigned int interruptCount); - -struct rmi_functions_data { - int functionNumber; - reportFuncPtr reportFn; - configFuncPtr configFn; - initFuncPtr initFn; - detectFuncPtr detectFn; -}; - - -struct rmi_functions *rmi_find_function(int functionNum); -int rmi_functions_init(struct input_dev *inputdev); - -#endif diff --git a/drivers/input/touchscreen/rmi_i2c.c b/drivers/input/touchscreen/rmi_i2c.c new file mode 100755 index 0000000..b877112 --- /dev/null +++ b/drivers/input/touchscreen/rmi_i2c.c @@ -0,0 +1,639 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) I2C Physical Layer Driver. + * Copyright (c) 2007-2011, Synaptics Incorporated + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include "rmi_i2c.h" +#include "rmi_drvr.h" + + +#define DRIVER_NAME "rmi4_ts" + +#define DEVICE_NAME "rmi4_ts" + +/* Used to lock access to the page address.*/ +/* TODO: for multiple device support will need a per-device mutex */ +static DEFINE_MUTEX(page_mutex); + + +static const struct i2c_device_id rmi_i2c_id_table[] = { + { DEVICE_NAME, 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, rmi_i2c_id_table); + + +/* + * This is the data kept on a per instance (client) basis. This data is + * always accessible by using the container_of() macro of the various elements + * inside. + */ +struct instance_data { + int instance_no; + int irq; + struct rmi_phys_driver rmiphysdrvr; + struct i2c_client *i2cclient; /* pointer to i2c_client for later use in + read, write, read_multiple, etc. */ + int page; +}; + +/* + * RMI devices have 16-bit addressing, but some of the physical + * implementations (like SMBus) only have 8-bit addressing. So RMI implements + * a page address at 0xff of every page so we can reliable page addresses + * every 256 registers. This function sets the page. + * + * The page_mutex lock must be held when this function is entered. + * + * param[in] id - The pointer to the instance_data struct + * param[in] page - The new page address. + * returns zero on success, non-zero on failure. + */ +int +rmi_set_page(struct instance_data *instancedata, unsigned int page) +{ + char txbuf[2]; + int retval; + txbuf[0] = 0xff; + txbuf[1] = page; + retval = i2c_master_send(instancedata->i2cclient, txbuf, 2); + if (retval != 2) { + dev_err(&instancedata->i2cclient->dev, + "%s: Set page fail: %d\n", __func__, retval); + } else { + retval = 0; + instancedata->page = page; + } + return retval; +} + +/* + * Read a single register through i2c. + * + * param[in] pd - The pointer to the rmi_phys_driver struct + * param[in] address - The address at which to start the data read. + * param[out] valp - Pointer to the buffer where the data will be stored. + * returns xero upon success (with the byte read in valp), non-zero upon error. + */ +static int +rmi_i2c_read(struct rmi_phys_driver *physdrvr, unsigned short address, char *valp) +{ + struct instance_data *instancedata = + container_of(physdrvr, struct instance_data, rmiphysdrvr); + + char txbuf[2]; + int retval = 0; + int retry_count = 0; + + /* Can't have anyone else changing the page behind our backs */ +#if 0 + mutex_lock(&page_mutex); + + if (((address >> 8) & 0xff) != instancedata->page) { + /* Switch pages */ + retval = rmi_set_page(instancedata, ((address >> 8) & 0xff)); + if (retval) + goto exit; + } +#endif + +retry: + txbuf[0] = address & 0xff; + retval = i2c_master_send(instancedata->i2cclient, txbuf, 1); + + if (retval != 1) { + dev_err(&instancedata->i2cclient->dev, "%s: Write fail: %d\n", + __func__, retval); + goto exit; + } + retval = i2c_master_recv(instancedata->i2cclient, txbuf, 1); + + if (retval != 1) { + if (++retry_count == 5) { + dev_err(&instancedata->i2cclient->dev, + "%s: Read of 0x%04x fail: %d\n", + __func__, address, retval); + } else { + mdelay(10); +#if 0 + rmi_set_page(instancedata, ((address >> 8) & 0xff)); +#endif + goto retry; + } + } else { + retval = 0; + *valp = txbuf[0]; + } +exit: + +#if 0 + mutex_unlock(&page_mutex); +#endif + return retval; +} + +/* + * Same as rmi_i2c_read, except that multiple bytes are allowed to be read. + * + * param[in] pd - The pointer to the rmi_phys_driver struct + * param[in] address - The address at which to start the data read. + * param[out] valp - Pointer to the buffer where the data will be stored. This + * buffer must be at least size bytes long. + * param[in] size - The number of bytes to be read. + * returns zero upon success (with the byte read in valp), non-zero upon error. + * + */ +static int +rmi_i2c_read_multiple(struct rmi_phys_driver *physdrvr, unsigned short address, + char *valp, int size) +{ + struct instance_data *instancedata = + container_of(physdrvr, struct instance_data, rmiphysdrvr); + + char txbuf[2]; + int retval = 0; + int retry_count = 0; + +#if 0 + /* Can't have anyone else changing the page behind our backs */ + mutex_lock(&page_mutex); + + if (((address >> 8) & 0xff) != instancedata->page) { + /* Switch pages */ + retval = rmi_set_page(instancedata, ((address >> 8) & 0xff)); + if (retval) + goto exit; + } +#endif + +retry: + txbuf[0] = address & 0xff; + retval = i2c_master_send(instancedata->i2cclient, txbuf, 1); + + if (retval != 1) { + dev_err(&instancedata->i2cclient->dev, "%s: Write fail: %d\n", + __func__, retval); + goto exit; + } + retval = i2c_master_recv(instancedata->i2cclient, valp, size); + + if (retval != size) { + if (++retry_count == 5) { + dev_err(&instancedata->i2cclient->dev, + "%s: Read of 0x%04x size %d fail: %d\n", + __func__, address, size, retval); + } else { + mdelay(10); +#if 0 + rmi_set_page(instancedata, ((address >> 8) & 0xff)); +#endif + goto retry; + } + } else { + retval = 0; + } +exit: + +#if 0 + mutex_unlock(&page_mutex); +#endif + return retval; +} + + +/* + * Write a single register through i2c. + * You can write multiple registers at once, but I made the functions for that + * seperate for performance reasons. Writing multiple requires allocation and + * freeing. + * + * param[in] pd - The pointer to the rmi_phys_driver struct + * param[in] address - The address at which to start the write. + * param[in] data - The data to be written. + * returns one upon success, something else upon error. + */ +static int +rmi_i2c_write(struct rmi_phys_driver *physdrvr, unsigned short address, char data) +{ + struct instance_data *instancedata = + container_of(physdrvr, struct instance_data, rmiphysdrvr); + + unsigned char txbuf[2]; + int retval = 0; + +#if 0 + /* Can't have anyone else changing the page behind our backs */ + mutex_lock(&page_mutex); + + if (((address >> 8) & 0xff) != instancedata->page) { + /* Switch pages */ + retval = rmi_set_page(instancedata, ((address >> 8) & 0xff)); + if (retval) + goto exit; + } +#endif + + txbuf[0] = address & 0xff; + txbuf[1] = data; + retval = i2c_master_send(instancedata->i2cclient, txbuf, 2); + + /* TODO: Add in retry on writes only in certian error return values */ + if (retval != 2) { + dev_err(&instancedata->i2cclient->dev, "%s: Write fail: %d\n", + __func__, retval); + goto exit; /* Leave this in case we add code below */ + } +exit: + +#if 0 + mutex_unlock(&page_mutex); +#endif + return retval; +} + +/* + * Write multiple registers. + * + * For fast writes of 16 bytes of less we will re-use a buffer on the stack. + * For larger writes (like for RMI reflashing) we will need to allocate a + * temp buffer. + * + * param[in] pd - The pointer to the rmi_phys_driver struct + * param[in] address - The address at which to start the write. + * param[in] valp - A pointer to a buffer containing the data to be written. + * param[in] size - The number of bytes to write. + * returns one upon success, something else upon error. + */ +static int +rmi_i2c_write_multiple(struct rmi_phys_driver *physdrvr, unsigned short address, + char *valp, int size) +{ + struct instance_data *instancedata = + container_of(physdrvr, struct instance_data, rmiphysdrvr); + + unsigned char *txbuf; + unsigned char txbuf_most[17]; /* Use this buffer for fast writes of 16 + bytes or less. The first byte will + contain the address at which to start + the write. */ + int retval = 0; + int i; + + if (size < sizeof(txbuf_most)) { + /* Avoid an allocation if we can help it. */ + txbuf = txbuf_most; + } else { + /* over 16 bytes write we'll need to allocate a temp buffer */ + txbuf = kzalloc(size + 1, GFP_KERNEL); + if (!txbuf) + return -ENOMEM; + } + + /* Yes, it stinks here that we have to copy the buffer */ + /* We copy from valp to txbuf leaving + the first location open for the address */ + for (i = 0; i < size; i++) + txbuf[i + 1] = valp[i]; + +#if 0 + /* Can't have anyone else changing the page behind our backs */ + mutex_lock(&page_mutex); + + if (((address >> 8) & 0xff) != instancedata->page) { + /* Switch pages */ + retval = rmi_set_page(instancedata, ((address >> 8) & 0xff)); + if (retval) + goto exit; + } +#endif + + txbuf[0] = address & 0xff; /* put the address in the first byte */ + retval = i2c_master_send(instancedata->i2cclient, txbuf, size + 1); + + /* TODO: Add in retyr on writes only in certian error return values */ + if (retval != 1) { + dev_err(&instancedata->i2cclient->dev, "%s: Write fail: %d\n", + __func__, retval); + goto exit; + } +exit: + +#if 0 + mutex_unlock(&page_mutex); +#endif + if (txbuf != txbuf_most) + kfree(txbuf); + return retval; +} + +/* + * This is the Interrupt Service Routine. It just notifies the application + * layer that attention is required. + */ +static irqreturn_t +i2c_attn_isr(int irq, void *info) +{ + struct instance_data *instancedata = info; + + disable_irq_nosync(instancedata->irq); + + if (instancedata->rmiphysdrvr.attention) { + instancedata->rmiphysdrvr.attention(&instancedata->rmiphysdrvr, + instancedata->instance_no); + } + + return IRQ_HANDLED; +} + +/* The Driver probe function - will allocate and initialize the instance + * data and request the irq and set the instance data as the clients + * platform data then register the physical driver which will do a scan of + * the RMI4 Physical Device Table and enumerate any RMI4 functions that + * have data sources associated with them. + */ +static int +rmi_i2c_probe(struct i2c_client *client, const struct i2c_device_id *dev_id) +{ + + struct instance_data *instancedata; + int retval = 0; + int i; + bool found = false; + int irqtype = 0; + + struct rmi_i2c_platformdata *platformdata; + struct rmi_i2c_sensordata *sensordata; + + if (client == NULL) { + printk(KERN_ERR "%s: Invalid NULL client received.", __func__); + return -EINVAL; + } + + printk(KERN_INFO "%s: Probing i2c RMI device, addr: 0x%02x", __func__, client->addr); + + /* Egregiously horrible delay here that seems to prevent I2C disasters on + * certain broken dev systems. In most cases, you can safely remove this. + * TODO: convert this to a parameter than can be spec'ed at boot time, + * so not everyone needs to suffer. + */ + mdelay(1000); + + /* Allocate and initialize the instance data for this client */ + instancedata = kzalloc(sizeof(*instancedata), GFP_KERNEL); + if (!instancedata) { + dev_err(&client->dev, + "%s: Out of memory trying to allocate instance_data.\n", + __func__); + return -ENOMEM; + } + + instancedata->rmiphysdrvr.name = DRIVER_NAME; + instancedata->rmiphysdrvr.write = rmi_i2c_write; + instancedata->rmiphysdrvr.read = rmi_i2c_read; + instancedata->rmiphysdrvr.write_multiple = rmi_i2c_write_multiple; + instancedata->rmiphysdrvr.read_multiple = rmi_i2c_read_multiple; + instancedata->rmiphysdrvr.module = THIS_MODULE; + + /* Set default to polling in case no matching platform data is located + for this device. We'll still work but in polling mode since we didn't + find any irq info */ + instancedata->rmiphysdrvr.polling_required = true; + + instancedata->page = 0xffff; /* Force a set page the first time */ + + /* cast to our struct rmi_i2c_platformdata so we know + the fields (see rmi_ic2.h) */ + platformdata = client->dev.platform_data; + if (platformdata == NULL) { + printk(KERN_ERR "%s: CONFIGURATION ERROR - platform data is NULL.", __func__); + return -EINVAL; + } + + /* Loop through the platform data and locate the one that matches + the i2c_client I2C address */ + for (i = 0; i < platformdata->num_sensors; i++) { + sensordata = &(platformdata->sensordata[i]); + if (sensordata == NULL) { + printk(KERN_ERR "%s: CONFIGURATION ERROR - platformdata sensordata[%d] is NULL.", __func__, i); + return -EINVAL; + } + printk(KERN_DEBUG "%s: sensor: %d addr: 0x%02x irq: 0x%x type: %d", + __func__, i, sensordata->i2c_address, sensordata->irq, sensordata->irq_type); + if (client->addr == sensordata->i2c_address) { + instancedata->instance_no = i; + found = true; + /* set the device name using the instance_no appended + to DEVICE_NAME to make a unique name */ + dev_set_name(&client->dev, + "rmi4-i2c%d", instancedata->instance_no); + + /* Determine if we need to poll (inefficient) or + use interrupts. + */ + if (sensordata->irq) { + instancedata->irq = sensordata->irq; + switch (sensordata->irq_type) { + case IORESOURCE_IRQ_HIGHEDGE: + irqtype = IRQF_TRIGGER_RISING; + break; + case IORESOURCE_IRQ_LOWEDGE: + irqtype = IRQF_TRIGGER_FALLING; + break; + case IORESOURCE_IRQ_HIGHLEVEL: + irqtype = IRQF_TRIGGER_HIGH; + break; + case IORESOURCE_IRQ_LOWLEVEL: + irqtype = IRQF_TRIGGER_LOW; + break; + default: + dev_warn(&client->dev, + "%s: Invalid IRQ flags in platform data.\n", + __func__); + kfree(instancedata); + return -ENXIO; + } + + instancedata->rmiphysdrvr.polling_required = false; + instancedata->rmiphysdrvr.irq = instancedata->irq; + + } else { + instancedata->rmiphysdrvr.polling_required = true; + dev_info(&client->dev, + "%s: No IRQ info given. Polling required.\n", + __func__); + } + } + } + + /* if went through all the platform data list and didn't find a match + then notify that we are defaulting to polling */ + if (!found) { + dev_info(&client->dev, + "%s: No platform data match found. " + "Defaulting to use polling.\n", + __func__); + } + + /* Store the instance data in the i2c_client - we need to do this prior + * to calling register_physical_driver since it may use the read, write + * functions. If nothing was found then the id fields will be set to 0 + * for the irq and the default will be set to polling required so we + * will still work but in polling mode. */ + i2c_set_clientdata(client, instancedata); + + /* Copy i2c_client pointer into instance_data's i2c_client pointer for + later use in rmi4_read, rmi4_write, etc. */ + instancedata->i2cclient = client; + + /* Register sensor drivers - this will call the detect function that + * will then scan the device and determine the supported RMI4 sensors + * and functions. + */ + retval = rmi_register_sensors(&instancedata->rmiphysdrvr); + if (retval) { + dev_err(&client->dev, "%s: Failed to Register %s sensor drivers\n", + __func__, instancedata->rmiphysdrvr.name); + i2c_set_clientdata(client, NULL); + kfree(instancedata); + return retval; + } + + if (instancedata->rmiphysdrvr.polling_required == false) { + retval = request_irq(instancedata->irq, i2c_attn_isr, + irqtype, "rmi_i2c", instancedata); + if (retval) { + dev_err(&client->dev, "%s: failed to obtain IRQ %d. Result: %d.", + __func__, instancedata->irq, retval); + dev_info(&client->dev, "%s: Reverting to polling.\n", __func__); + instancedata->rmiphysdrvr.polling_required = true; + /* TODO: Need to revert back to polling - create and start timer, turn off interrupts for each fn */ + } else { + dev_dbg(&client->dev, "%s: got irq.\n", __func__); + } + } + + dev_dbg(&client->dev, "%s: Successfully registered %s sensor driver.\n", + __func__, instancedata->rmiphysdrvr.name); + + printk(KERN_INFO "%s: Successfully registered %s sensor driver.\n", __func__, instancedata->rmiphysdrvr.name); + + return retval; +} + +/* The Driver remove function. We tear down the instance data and unregister + * the phys driver in this call. + */ +static int +rmi_i2c_remove(struct i2c_client *client) +{ + struct instance_data *instancedata = + i2c_get_clientdata(client); + + dev_dbg(&client->dev, "%s: Unregistering phys driver %s\n", __func__, + instancedata->rmiphysdrvr.name); + + rmi_unregister_sensors(&instancedata->rmiphysdrvr); + + dev_dbg(&client->dev, "%s: Unregistered phys driver %s\n", + __func__, instancedata->rmiphysdrvr.name); + + /* only free irq if we have an irq - otherwise the instance_data + will be 0 for that field */ + if (instancedata->irq) + free_irq(instancedata->irq, instancedata); + + kfree(instancedata); + dev_dbg(&client->dev, "%s: Remove successful\n", __func__); + + return 0; +} + +#ifdef CONFIG_PM +static int +rmi_i2c_suspend(struct i2c_client *client, pm_message_t mesg) +{ + /* Touch sleep mode */ + return 0; +} + +static int +rmi_i2c_resume(struct i2c_client *client) +{ + /* Re-initialize upon resume */ + return 0; +} +#else +#define rmi_i2c_suspend NULL +#define rmi_i2c_resume NULL +#endif + +/* + * This structure tells the i2c subsystem about us. + * + * TODO: we should add .suspend and .resume fns. + * + */ +static struct i2c_driver rmi_i2c_driver = { + .probe = rmi_i2c_probe, + .remove = rmi_i2c_remove, + .suspend = rmi_i2c_suspend, + .resume = rmi_i2c_resume, + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, + .id_table = rmi_i2c_id_table, +}; + +/* + * Register ourselves with i2c Chip Driver. + * + */ +static int __init rmi_phys_i2c_init(void) +{ + return i2c_add_driver(&rmi_i2c_driver); +} + +/* + * Un-register ourselves from the i2c Chip Driver. + * + */ +static void __exit rmi_phys_i2c_exit(void) +{ + i2c_del_driver(&rmi_i2c_driver); +} + + +module_init(rmi_phys_i2c_init); +module_exit(rmi_phys_i2c_exit); + +MODULE_AUTHOR("Synaptics, Inc."); +MODULE_DESCRIPTION("RMI4 Driver I2C Physical Layer"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/rmi_i2c.h b/drivers/input/touchscreen/rmi_i2c.h old mode 100644 new mode 100755 index fecda60..cf79760 --- a/drivers/input/touchscreen/rmi_i2c.h +++ b/drivers/input/touchscreen/rmi_i2c.h @@ -1,7 +1,7 @@ /** * * Synaptics RMI over I2C Physical Layer Driver Header File. - * Copyright (c) 2007 - 2010, Synaptics Incorporated + * Copyright (c) 2007 - 2011, Synaptics Incorporated * */ /* @@ -25,27 +25,28 @@ #ifndef _RMI_I2C_H #define _RMI_I2C_H -/* Platform-specific configuration data. - * This structure is used by the platform-specific driver to designate - * specific information about the hardware. A platform client may supply - * an array of these to the rmi_phys_i2c driver. +/* Sensor-specific configuration data. + * There is one of these for each RMI4 sensor on the I2C bus, describing + * its address, IRQ (if any), and the type of IRQ (if applicable). An + * array of these gets included as part of the platformdata (see below). */ -struct rmi_i2c_platformdata { - /* The seven-bit i2c address of the device. */ +struct rmi_i2c_sensordata { + /* The seven-bit i2c address of the sensor. */ int i2c_address; /* The number of the irq. Set to zero if polling is required. */ int irq; /* The type of the irq (e.g., IRQF_TRIGGER_FALLING). - Only valid if irq != 0 */ + Only valid if irq != 0 */ int irq_type; }; -/* Descriptor structure. - * Describes the number of i2c devices on the bus that speak RMI. +/* Platform-specific configuration data. + * Describes the number of i2c sensors on the bus that speak RMI, and + * some basic properties for each of those sensors. */ -struct rmi_i2c_data { - int num_clients; - struct rmi_i2c_platformdata *platformdata; +struct rmi_i2c_platformdata { + int num_sensors; + struct rmi_i2c_sensordata *sensordata; }; #endif diff --git a/drivers/input/touchscreen/rmi_phys_i2c.c b/drivers/input/touchscreen/rmi_phys_i2c.c deleted file mode 100644 index 397c717..0000000 --- a/drivers/input/touchscreen/rmi_phys_i2c.c +++ /dev/null @@ -1,577 +0,0 @@ -/** - * - * Synaptics Register Mapped Interface (RMI4) I2C Physical Layer Driver. - * Copyright (c) 2007-2010, Synaptics Incorporated - * - */ -/* - * This file is licensed under the GPL2 license. - * - *############################################################################# - * GPL - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - *############################################################################# - */ - -#include <linux/module.h> -#include <linux/i2c.h> -#include <linux/platform_device.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/slab.h> -#include "rmi_i2c.h" -#include "rmi.h" - - -#define DRIVER_NAME "rmi4_ts" - -#define DEVICE_NAME "rmi4_ts" - -/* Used to lock access to the page address.*/ -/* TODO: for multiple device support will need a per-device mutex */ -static DEFINE_MUTEX(page_mutex); - - -static const struct i2c_device_id rmi_i2c_id_table[] = { - { DEVICE_NAME, 0 }, - { }, -}; -MODULE_DEVICE_TABLE(i2c, rmi_i2c_id_table); - - -/* - * This is the data kept on a per instance (client) basis. This data is - * always accessible by using the container_of() macro of the various elements - * inside. - */ -struct instance_data { - int instance_no; - int irq; - struct rmi_phys_driver rpd; - struct i2c_client *i2cclient; /* pointer to i2c_client for later use in - read, write, read_multiple, etc. */ - int page; -}; - -/* - * RMI devices have 16-bit addressing, but some of the physical - * implementations (like SMBus) only have 8-bit addressing. So RMI implements - * a page address at 0xff of every page so we can reliable page addresses - * every 256 registers. This function sets the page. - * - * The page_mutex lock must be held when this function is entered. - * - * param[in] id - The pointer to the instance_data struct - * param[in] page - The new page address. - * returns zero on success, non-zero on failure. - */ -int -rmi_set_page(struct instance_data *id, unsigned int page) -{ - char txbuf[2]; - int retval; - txbuf[0] = 0xff; - txbuf[1] = page; - retval = i2c_master_send(id->i2cclient, txbuf, 2); - if (retval != 2) { - dev_err(&id->i2cclient->dev, - "%s: Set page fail: %d\n", __func__, retval); - } else { - retval = 0; - id->page = page; - } - return retval; -} - -/* - * Read a single register through i2c. - * - * param[in] pd - The pointer to the rmi_phys_driver struct - * param[in] address - The address at which to start the data read. - * param[out] valp - Pointer to the buffer where the data will be stored. - * returns xero upon success (with the byte read in valp), non-zero upon error. - */ -static int -rmi_i2c_read(struct rmi_phys_driver *pd, unsigned short address, char *valp) -{ - struct instance_data *id = container_of(pd, struct instance_data, rpd); - char txbuf[2]; - int retval = 0; - int retry_count = 0; - - /* Can't have anyone else changing the page behind our backs */ - mutex_lock(&page_mutex); - - if (((address >> 8) & 0xff) != id->page) { - /* Switch pages */ - retval = rmi_set_page(id, ((address >> 8) & 0xff)); - if (retval) - goto exit; - } - -retry: - txbuf[0] = address & 0xff; - retval = i2c_master_send(id->i2cclient, txbuf, 1); - - if (retval != 1) { - dev_err(&id->i2cclient->dev, "%s: Write fail: %d\n", - __func__, retval); - goto exit; - } - retval = i2c_master_recv(id->i2cclient, txbuf, 1); - - if (retval != 1) { - if (++retry_count == 5) { - dev_err(&id->i2cclient->dev, - "%s: Read of 0x%04x fail: %d\n", - __func__, address, retval); - } else { - mdelay(10); - rmi_set_page(id, ((address >> 8) & 0xff)); - goto retry; - } - } else { - retval = 0; - *valp = txbuf[0]; - } -exit: - mutex_unlock(&page_mutex); - return retval; -} - -/* - * Same as rmi_i2c_read, except that multiple bytes are allowed to be read. - * - * param[in] pd - The pointer to the rmi_phys_driver struct - * param[in] address - The address at which to start the data read. - * param[out] valp - Pointer to the buffer where the data will be stored. This - * buffer must be at least size bytes long. - * param[in] size - The number of bytes to be read. - * returns zero upon success (with the byte read in valp), non-zero upon error. - * - */ -static int -rmi_i2c_read_multiple(struct rmi_phys_driver *pd, unsigned short address, - char *valp, int size) -{ - struct instance_data *id = container_of(pd, struct instance_data, rpd); - char txbuf[2]; - int retval = 0; - int retry_count = 0; - - /* Can't have anyone else changing the page behind our backs */ - mutex_lock(&page_mutex); - - if (((address >> 8) & 0xff) != id->page) { - /* Switch pages */ - retval = rmi_set_page(id, ((address >> 8) & 0xff)); - if (retval) - goto exit; - } - -retry: - txbuf[0] = address & 0xff; - retval = i2c_master_send(id->i2cclient, txbuf, 1); - - if (retval != 1) { - dev_err(&id->i2cclient->dev, "%s: Write fail: %d\n", - __func__, retval); - goto exit; - } - retval = i2c_master_recv(id->i2cclient, valp, size); - - if (retval != size) { - if (++retry_count == 5) { - dev_err(&id->i2cclient->dev, - "%s: Read of 0x%04x size %d fail: %d\n", - __func__, address, size, retval); - } else { - mdelay(10); - rmi_set_page(id, ((address >> 8) & 0xff)); - goto retry; - } - } else { - retval = 0; - } -exit: - mutex_unlock(&page_mutex); - return retval; -} - - -/* - * Write a single register through i2c. - * You can write multiple registers at once, but I made the functions for that - * seperate for performance reasons. Writing multiple requires allocation and - * freeing. - * - * param[in] pd - The pointer to the rmi_phys_driver struct - * param[in] address - The address at which to start the write. - * param[in] data - The data to be written. - * returns one upon success, something else upon error. - */ -static int -rmi_i2c_write(struct rmi_phys_driver *pd, unsigned short address, char data) -{ - struct instance_data *id = container_of(pd, struct instance_data, rpd); - unsigned char txbuf[2]; - int retval = 0; - - /* Can't have anyone else changing the page behind our backs */ - mutex_lock(&page_mutex); - - if (((address >> 8) & 0xff) != id->page) { - /* Switch pages */ - retval = rmi_set_page(id, ((address >> 8) & 0xff)); - if (retval) - goto exit; - } - - txbuf[0] = address & 0xff; - txbuf[1] = data; - retval = i2c_master_send(id->i2cclient, txbuf, 2); - - /* TODO: Add in retry on writes only in certian error return values */ - if (retval != 2) { - dev_err(&id->i2cclient->dev, "%s: Write fail: %d\n", - __func__, retval); - goto exit; /* Leave this in case we add code below */ - } -exit: - mutex_unlock(&page_mutex); - return retval; -} - -/* - * Write multiple registers. - * - * For fast writes of 16 bytes of less we will re-use a buffer on the stack. - * For larger writes (like for RMI reflashing) we will need to allocate a - * temp buffer. - * - * param[in] pd - The pointer to the rmi_phys_driver struct - * param[in] address - The address at which to start the write. - * param[in] valp - A pointer to a buffer containing the data to be written. - * param[in] size - The number of bytes to write. - * returns one upon success, something else upon error. - */ -static int -rmi_i2c_write_multiple(struct rmi_phys_driver *pd, unsigned short address, - char *valp, int size) -{ - struct instance_data *id = container_of(pd, struct instance_data, rpd); - unsigned char *txbuf; - unsigned char txbuf_most[17]; /* Use this buffer for fast writes of 16 - bytes or less. The first byte will - contain the address at which to start - the write. */ - int retval = 0; - int i; - - if (size < sizeof(txbuf_most)) { - /* Avoid an allocation if we can help it. */ - txbuf = txbuf_most; - } else { - /* over 16 bytes write we'll need to allocate a temp buffer */ - txbuf = kmalloc(size + 1, GFP_KERNEL); - if (!txbuf) - return -ENOMEM; - } - - /* Yes, it stinks here that we have to copy the buffer */ - /* We copy from valp to txbuf leaving - the first location open for the address */ - for (i = 0; i < size; i++) - txbuf[i + 1] = valp[i]; - - /* Can't have anyone else changing the page behind our backs */ - mutex_lock(&page_mutex); - - if (((address >> 8) & 0xff) != id->page) { - /* Switch pages */ - retval = rmi_set_page(id, ((address >> 8) & 0xff)); - if (retval) - goto exit; - } - - txbuf[0] = address & 0xff; /* put the address in the first byte */ - retval = i2c_master_send(id->i2cclient, txbuf, size + 1); - - /* TODO: Add in retyr on writes only in certian error return values */ - if (retval != 1) { - dev_err(&id->i2cclient->dev, "%s: Write fail: %d\n", - __func__, retval); - goto exit; - } -exit: - mutex_unlock(&page_mutex); - if (txbuf != txbuf_most) - kfree(txbuf); - return retval; -} - -/* - * This is the Interrupt Service Routine. It just notifies the application - * layer that attention is required. - */ -static irqreturn_t -i2c_attn_isr(int irq, void *info) -{ - struct instance_data *id = info; - disable_irq(id->irq); - if (id->rpd.attention) - id->rpd.attention(&id->rpd, id->instance_no); - return IRQ_HANDLED; -} - -/* The Driver probe function - will allocate and initialize the instance - data and request the irq and set the instance data as the clients - platform data then register the physical driver which will do a scan of - the RMI4 Physical Device Table and enumerate any RMI4 functions that - have data sources associated with them. - */ -static int -rmi_i2c_probe(struct i2c_client *client, const struct i2c_device_id *dev_id) -{ - struct instance_data *id; - int retval = 0; - int i; - bool found = false; - - struct rmi_i2c_data *rmii2cdata; - struct rmi_i2c_platformdata *platformdata; - - dev_dbg(&client->dev, "Probing i2c RMI device\n"); - - /* Allocate and initialize the instance data for this client */ - id = kzalloc(sizeof(*id), GFP_KERNEL); - if (!id) { - dev_err(&client->dev, - "%s: Out of memory trying to allocate instance_data.\n", - __func__); - return -ENOMEM; - } - - id->rpd.name = DRIVER_NAME; - id->rpd.write = rmi_i2c_write; - id->rpd.read = rmi_i2c_read; - id->rpd.write_multiple = rmi_i2c_write_multiple; - id->rpd.read_multiple = rmi_i2c_read_multiple; - id->rpd.module = THIS_MODULE; - id->rpd.polling_required = true; /* Set default to polling in case no - matching platform data is located - for this device. We'll still work - but in polling mode since we didn't - find any irq info */ - - id->page = 0xffff; /* So we set the page correctly - the first time */ - - /* cast to our struct rmi_i2c_data so we know - the fields (see rmi_ic2.h) */ - rmii2cdata = client->dev.platform_data; - - /* Loop through the platform data and locate the one that matches - the i2c_client I2C address */ - for (i = 0; i < rmii2cdata->num_clients; i++) { - platformdata = &(rmii2cdata->platformdata[i]); - if (client->addr == platformdata->i2c_address) { - id->instance_no = i; - found = true; - /* set the device name using the instance_no appended - to DEVICE_NAME to make a unique name */ - dev_set_name(&client->dev, - "rmi4-i2c%d", id->instance_no); - - /* Determine if we need to poll (inefficient) or - use interrupts. - */ - if (platformdata->irq) { - int irqtype; - - id->irq = platformdata->irq; - switch (platformdata->irq_type) { - case IORESOURCE_IRQ_HIGHEDGE: - irqtype = IRQF_TRIGGER_RISING; - break; - case IORESOURCE_IRQ_LOWEDGE: - irqtype = IRQF_TRIGGER_FALLING; - break; - case IORESOURCE_IRQ_HIGHLEVEL: - irqtype = IRQF_TRIGGER_HIGH; - break; - case IORESOURCE_IRQ_LOWLEVEL: - irqtype = IRQF_TRIGGER_LOW; - break; - default: - dev_warn(&client->dev, - "%s: Invalid IRQ flags in " - "platform data.\n", - __func__); - kfree(id); - return -ENXIO; - } - - retval = request_irq(id->irq, i2c_attn_isr, - irqtype, "rmi_i2c", id); - if (retval) { - dev_info(&client->dev, - "%s: Unable to get attn irq %d." - " Reverting to polling.\n", - __func__, id->irq); - id->rpd.polling_required = true; - } else { - dev_dbg(&client->dev, - "rmi_i2c_probe: got irq.\n"); - id->rpd.polling_required = false; - id->rpd.irq = id->irq; - } - } else { - id->rpd.polling_required = true; - dev_info(&client->dev, - "%s: No IRQ info given. " - "Polling required.\n", - __func__); - } - } - } - - /* if went through all the platform data list and didn't find a match - then notify that we are defaulting to polling */ - if (!found) { - dev_info(&client->dev, - "%s: No platform data match found. " - "Defaulting to use polling.\n", - __func__); - } - - /* Store the instance data in the i2c_client - we need to do this prior - * to calling register_physical_driver since it may use the read, write - * functions. If nothing was found then the id fields will be set to 0 - * for the irq and the default will be set to polling required so we - * will still work but in polling mode. */ - i2c_set_clientdata(client, id); - - /* Copy i2c_client pointer into instance_data's i2c_client pointer for - later use in rmi4_read, rmi4_write, etc. */ - id->i2cclient = client; - - /* Register physical driver - this will call the detect function that - will then scan the device and determine the supported RMI4 functions. - */ - retval = rmi_register_phys_driver(&id->rpd); - if (retval) { - dev_err(&client->dev, "%s: Failed to Register %s phys driver\n", - __func__, id->rpd.name); - i2c_set_clientdata(client, NULL); - /* only free irq if we have an irq - otherwise the instance_data - will be 0 for that field since kzalloc was used to alloc id */ - if (id->irq) - free_irq(id->irq, id); - kfree(id); - return retval; - } - - dev_dbg(&client->dev, "%s: Successfully Registered %s phys driver\n", - __func__, id->rpd.name); - - return retval; -} - -/* The Driver remove function. We tear down the instance data and unregister - * the phys driver in this call. - */ -static int -rmi_i2c_remove(struct i2c_client *client) -{ - struct instance_data *id = i2c_get_clientdata(client); - - dev_dbg(&client->dev, "%s: Unregistering phys driver %s\n", __func__, id->rpd.name); - - rmi_unregister_phys_driver(&id->rpd); - - dev_dbg(&client->dev, "%s: Unregistered phys driver %s\n", - __func__, id->rpd.name); - - /* only free irq if we have an irq - otherwise the instance_data - will be 0 for that field */ - if (id->irq) - free_irq(id->irq, id); - - kfree(id); - dev_dbg(&client->dev, "%s: Remove successful\n", __func__); - - return 0; -} - -#ifdef CONFIG_PM -static int -rmi_i2c_suspend(struct i2c_client *client, pm_message_t mesg) -{ - /* Touch sleep mode */ - return 0; -} - -static int -rmi_i2c_resume(struct i2c_client *client) -{ - /* Re-initialize upon resume */ - return 0; -} -#else -#define rmi_i2c_suspend NULL -#define rmi_i2c_resume NULL -#endif - -/* - * This structure tells the i2c subsystem about us. - * - * TODO: we should add .suspend and .resume fns. - * - */ -static struct i2c_driver rmi_i2c_driver = { - .probe = rmi_i2c_probe, - .remove = rmi_i2c_remove, - .suspend = rmi_i2c_suspend, - .resume = rmi_i2c_resume, - .driver = { - .name = DRIVER_NAME, - .owner = THIS_MODULE, - }, - .id_table = rmi_i2c_id_table, -}; - -/* - * Register ourselves with i2c Chip Driver. - * - */ -static int __init rmi_phys_i2c_init(void) -{ - return i2c_add_driver(&rmi_i2c_driver); -} - -/* - * Un-register ourselves from the i2c Chip Driver. - * - */ -static void __exit rmi_phys_i2c_exit(void) -{ - i2c_del_driver(&rmi_i2c_driver); -} - - -module_init(rmi_phys_i2c_init); -module_exit(rmi_phys_i2c_exit); - -MODULE_AUTHOR("Synaptics, Inc."); -MODULE_DESCRIPTION("RMI4 Driver I2C Physical Layer"); -MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/rmi_sensor.c b/drivers/input/touchscreen/rmi_sensor.c new file mode 100755 index 0000000..8b0dc35 --- /dev/null +++ b/drivers/input/touchscreen/rmi_sensor.c @@ -0,0 +1,588 @@ +/** + * Synaptics Register Mapped Interface (RMI4) - RMI Sensor Module. + * Copyright (C) 2007 - 2011, Synaptics Incorporated + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +static const char sensorname[] = "sensor"; + +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/device.h> +#include <linux/hrtimer.h> +#include <linux/miscdevice.h> +#include <linux/fs.h> +#include <linux/delay.h> +#include <linux/uaccess.h> +#include <linux/slab.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/input.h> +#include <linux/interrupt.h> + + +#include "rmi_drvr.h" +#include "rmi_bus.h" +#include "rmi_function.h" +#include "rmi_sensor.h" + +long polltime = 25000000; /* Shared with rmi_function.c. */ +EXPORT_SYMBOL(polltime); +module_param(polltime, long, 0644); +MODULE_PARM_DESC(polltime, "How long to wait between polls (in nano seconds)."); + + +#define PDT_START_SCAN_LOCATION 0x00E9 +#define PDT_END_SCAN_LOCATION 0x0005 +#define PDT_ENTRY_SIZE 0x0006 + +static DEFINE_MUTEX(rfi_mutex); + +struct rmi_functions *rmi_find_function(int functionNum); + +int rmi_read(struct rmi_sensor_driver *sensor, unsigned short address, char *dest) +{ + struct rmi_phys_driver *rpd = sensor->rpd; + if (!rpd) + return -ENODEV; + return rpd->read(rpd, address, dest); +} +EXPORT_SYMBOL(rmi_read); + +int rmi_write(struct rmi_sensor_driver *sensor, unsigned short address, + unsigned char data) +{ + struct rmi_phys_driver *rpd = sensor->rpd; + if (!rpd) + return -ENODEV; + return rpd->write(rpd, address, data); +} +EXPORT_SYMBOL(rmi_write); + +int rmi_read_multiple(struct rmi_sensor_driver *sensor, unsigned short address, + char *dest, int length) +{ + struct rmi_phys_driver *rpd = sensor->rpd; + if (!rpd) + return -ENODEV; + return rpd->read_multiple(rpd, address, dest, length); +} +EXPORT_SYMBOL(rmi_read_multiple); + +int rmi_write_multiple(struct rmi_sensor_driver *sensor, unsigned short address, + unsigned char *data, int length) +{ + struct rmi_phys_driver *rpd = sensor->rpd; + if (!rpd) + return -ENODEV; + return rpd->write_multiple(rpd, address, data, length); +} +EXPORT_SYMBOL(rmi_write_multiple); + +bool rmi_polling_required(struct rmi_sensor_driver *sensor) +{ + return sensor->polling_required; +} +EXPORT_SYMBOL(rmi_polling_required); + +/** Functions can call this in order to dispatch IRQs. */ +void dispatchIRQs(struct rmi_sensor_driver *sensor, unsigned int irqStatus) +{ + struct rmi_function_info *functionInfo; + + + list_for_each_entry(functionInfo, &sensor->functions, link) { + if ((functionInfo->interruptMask & irqStatus)) { + if (functionInfo->function_device->rmi_funcs->inthandler) { + /* Call the functions interrupt handler function. */ + functionInfo->function_device->rmi_funcs->inthandler(functionInfo, (functionInfo->interruptMask & irqStatus)); + } + } + } +} + +/** + * This is the function we pass to the RMI4 subsystem so we can be notified + * when attention is required. It may be called in interrupt context. + */ +static void attention(struct rmi_phys_driver *physdrvr, int instance) +{ + /* All we have to do is schedule work. */ + + /* TODO: It's possible that workIsReady is not really needed anymore. + * Investigate this to see if the race condition between setting up + * the work and enabling the interrupt still exists. */ + if (physdrvr->sensor->workIsReady) { + schedule_work(&(physdrvr->sensor->work)); + } else { + /* Got an interrupt but we're not ready so enable the irq so it doesn't get hung up */ + printk(KERN_DEBUG "%s: Work not initialized yet - enabling irqs.\n", __func__); + enable_irq(physdrvr->irq); + } +} + +/** + * This notifies any interested functions that there + * is an Attention interrupt. The interested functions should take appropriate + * actions (such as reading the interrupt status register and dispatching any + * appropriate RMI4 interreupts). + */ +void attn_notify(struct rmi_sensor_driver *sensor) +{ + struct rmi_function_info *functionInfo; + + /* check each function that has data sources and if the interrupt for + * that triggered then call that RMI4 functions report() function to + * gather data and report it to the input subsystem */ + list_for_each_entry(functionInfo, &sensor->functions, link) { + if (functionInfo->function_device->rmi_funcs->attention) + functionInfo->function_device->rmi_funcs->attention(functionInfo); + } +} + +/* This is the worker function - for now it simply has to call attn_notify. This work + * should be scheduled whenever an ATTN interrupt is asserted by the touch sensor. + * We then call attn_notify to dispatch notification of the ATTN interrupt to all + * interested functions. After all the attention handling functions + * have returned, it is presumed safe to re-enable the Attention interrupt. + */ +static void sensor_work_func(struct work_struct *work) +{ + struct rmi_sensor_driver *sensor = container_of(work, + struct rmi_sensor_driver, work); + + attn_notify(sensor); + + /* we only need to enable the irq if doing interrupts */ + if (!rmi_polling_required(sensor)) + enable_irq(sensor->rpd->irq); +} + +/* This is the timer function for polling - it simply has to schedule work + * and restart the timer. */ +static enum hrtimer_restart sensor_poll_timer_func(struct hrtimer *timer) +{ + struct rmi_sensor_driver *sensor = container_of(timer, + struct rmi_sensor_driver, timer); + + schedule_work(&sensor->work); + hrtimer_start(&sensor->timer, ktime_set(0, polltime), HRTIMER_MODE_REL); + return HRTIMER_NORESTART; +} + +/* This is the probe function passed to the RMI4 subsystem that gives us a + * chance to recognize an RMI4 device. In this case, we're looking for + * Synaptics devices that have data sources - such as touch screens, buttons, + * etc. + * + * TODO: Well, it used to do this. I'm not sure it's required any more. + */ +static int probe(struct rmi_sensor_driver *sensor) +{ + struct rmi_phys_driver *rpd; + + rpd = sensor->rpd; + + if (!rpd) { + printk(KERN_ERR "%s: Invalid rmi physical driver - null ptr: %p\n", __func__, rpd); + return 0; + } + + return 1; +} + +static void config(struct rmi_sensor_driver *sensor) +{ + /* For each data source we had detected print info and set up interrupts + or polling. */ + struct rmi_function_info *functionInfo; + struct rmi_phys_driver *rpd; + + rpd = sensor->rpd; /* get ptr to rmi_physical_driver from app */ + + list_for_each_entry(functionInfo, &sensor->functions, link) { + /* Get and print some info about the data sources... */ + struct rmi_functions *fn; + bool found = false; + /* check if function number matches - if so call that + config function */ + fn = rmi_find_function(functionInfo->functionNum); + if (fn) { + found = true; + + if (fn->config) { + fn->config(functionInfo); + } else { + /* the developer did not add in the + pointer to the config function into + rmi4_supported_data_src_functions */ + printk(KERN_ERR + "%s: no config function for " + "function 0x%x\n", + __func__, functionInfo->functionNum); + break; + } + } + + if (!found) { + /* if no support found for this RMI4 function + it means the developer did not add the + appropriate function pointer list into the + rmi4_supported_data_src_functions array and/or + did not bump up the number of supported RMI4 + functions in rmi.h as required */ + printk(KERN_ERR "%s: could not find support " + "for function 0x%x\n", + __func__, functionInfo->functionNum); + } + } + + /* This will handle interrupts on the ATTN line (interrupt driven) + * or will be called every poll interval (when we're not interrupt + * driven). + */ + INIT_WORK(&sensor->work, sensor_work_func); + sensor->workIsReady = true; + + if (rmi_polling_required(sensor)) { + /* We're polling driven, so set up the polling timer + and timer function. */ + printk(KERN_INFO "%s: Setting up polling.", __func__); + hrtimer_init(&sensor->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + sensor->timer.function = sensor_poll_timer_func; + hrtimer_start(&sensor->timer, ktime_set(1, 0), HRTIMER_MODE_REL); + } +} + +/** Just a stub for now. + */ +static int rmi_sensor_suspend(struct device *dev, pm_message_t state) +{ + printk(KERN_INFO "%s: sensor suspend called.", __func__); + return 0; +} + +/** Just a stub for now. + */ +static int rmi_sensor_resume(struct device *dev) +{ + printk(KERN_INFO "%s: sensor resume called.", __func__); + return 0; +} + +/* + * This method is called, whenever a new sensor device is added for the rmi + * bus. + * + * It will scan the devices PDT to determine the supported functions + * and create a new function device for each of these. It will read + * the query, control, command and data regsiters for the function + * to be used for each newly created function device. + * + * The sensor device is then bound to every function it supports. + * + */ +int rmi_sensor_register_functions(struct rmi_sensor_driver *sensor) +{ + struct rmi_function_device *function; + unsigned int interruptRegisterCount; + struct rmi_phys_driver *rpd; + int i; + unsigned char interruptCount; + struct rmi_function_info *functionInfo; + struct rmi_function_descriptor rmi_fd; + struct rmi_functions *fn; + bool found; + int retval; + + pr_debug("%s: Registering sensor functions\n", __func__); + + retval = 0; + + /* Scan device for functions that may be supported */ + { + pr_debug("%s: Scanning sensor for Functions:\n", __func__); + + interruptCount = 0; + rpd = sensor->rpd; + + /* Read the Page Descriptor Table to determine what functions + are present */ + printk(KERN_DEBUG "%s: Scanning page descriptors.", __func__); + for (i = PDT_START_SCAN_LOCATION; + i >= PDT_END_SCAN_LOCATION; + i -= PDT_ENTRY_SIZE) { + printk(KERN_DEBUG "%s: Reading page descriptor 0x%02x", __func__, i); + retval = rpd->read_multiple(rpd, i, (char *)&rmi_fd, + sizeof(rmi_fd)); + if (!retval) { + functionInfo = NULL; + + if (rmi_fd.functionNum != 0x00 && rmi_fd.functionNum != 0xff) { + printk(KERN_DEBUG "%s: F%02x - queries %02x commands %02x control %02x data %02x ints %02x", __func__, rmi_fd.functionNum, rmi_fd.queryBaseAddr, rmi_fd.commandBaseAddr, rmi_fd.controlBaseAddr, rmi_fd.dataBaseAddr, rmi_fd.interruptSrcCnt); + + /* Print a helpful message for debugging. */ + if ((rmi_fd.functionNum & 0xff) == 0x01) + printk(KERN_DEBUG "%s: Fn $01 Found - RMI Device Control\n", __func__); + + /* determine if the function is supported and if so + then bind this function device to the sensor */ + if (rmi_fd.interruptSrcCnt) { + functionInfo = kzalloc(sizeof(*functionInfo), GFP_KERNEL); + if (!functionInfo) { + printk(KERN_ERR "%s: could not allocate memory for function 0x%x\n", + __func__, rmi_fd.functionNum); + retval = -ENOMEM; + goto exit_fail; + } + functionInfo->sensor = sensor; + functionInfo->functionNum = (rmi_fd.functionNum & 0xff); + INIT_LIST_HEAD(&functionInfo->link); + /* Get the ptr to the detect function based on + the function number */ + found = false; + printk(KERN_DEBUG "%s: Checking for RMI function F%02x.", __func__, rmi_fd.functionNum); + fn = rmi_find_function(rmi_fd.functionNum); + if (fn) { + found = true; + retval = fn->detect(functionInfo, &rmi_fd, + interruptCount); + if (retval) + printk(KERN_ERR "%s: Function detect for F%02x failed with %d.", + __func__, rmi_fd.functionNum, retval); + + /* Create a function device and function driver for this Fn */ + function = kzalloc(sizeof(*function), GFP_KERNEL); + if (!function) { + printk(KERN_ERR "%s: Error allocating memeory for rmi_function_device\n", __func__); + return -ENOMEM; + } + + function->dev.parent = &sensor->sensor_device->dev; + function->dev.bus = sensor->sensor_device->dev.bus; + function->rmi_funcs = fn; + function->sensor = sensor; + function->rfi = functionInfo; + functionInfo->function_device = function; + + /* Check if we have an interrupt mask of 0 and a non-NULL interrupt + handler function and print a debug message since we should never + have this. + */ + if (functionInfo->interruptMask == 0 && fn->inthandler != NULL) { + printk(KERN_DEBUG "%s: Can't have a zero interrupt mask for function F%02x (which requires an interrupt handler).\n", + __func__, rmi_fd.functionNum); + } + + + /* Check if we have a non-zero interrupt mask and a NULL interrupt + handler function and print a debug message since we should never + have this. + */ + if (functionInfo->interruptMask != 0 && fn->inthandler == NULL) { + printk(KERN_DEBUG "%s: Can't have a non-zero interrupt mask %d for function F%02x with a NULL inthandler fn.\n", + __func__, functionInfo->interruptMask, rmi_fd.functionNum); + } + + /* Register the rmi function device */ + retval = rmi_function_register_device(function, rmi_fd.functionNum); + if (retval) { + printk(KERN_ERR "%s: Failed rmi_function_register_device.\n", + __func__); + return retval; + } + } + + if (!found) { + printk(KERN_ERR "%s: could not find support for function 0x%x\n", + __func__, rmi_fd.functionNum); + } + } else { + printk(KERN_INFO "%s: Found function F%02x - Ignored.\n", __func__, rmi_fd.functionNum & 0xff); + } + + /* bump interrupt count for next iteration */ + /* NOTE: The value 7 is reserved - for now, only bump up one for an interrupt count of 7 */ + if ((rmi_fd.interruptSrcCnt & 0x7) == 0x7) { + interruptCount += 1; + } else { + interruptCount += + (rmi_fd.interruptSrcCnt & 0x7); + } + + /* link this function info to the RMI module infos list + of functions */ + if (functionInfo == NULL) { + printk(KERN_DEBUG "%s: WTF? functionInfo is null here.", __func__); + } else { + printk(KERN_DEBUG "%s: Adding function F%02x with %d sources.\n", + __func__, functionInfo->functionNum, functionInfo->numSources); + + mutex_lock(&rfi_mutex); + list_add_tail(&functionInfo->link, + &sensor->functions); + mutex_unlock(&rfi_mutex); + } + + } else { + /* A zero or 0xff in the function number + signals the end of the PDT */ + printk(KERN_DEBUG "%s: Found End of PDT\n", + __func__); + break; + } + } else { + /* failed to read next PDT entry - end PDT + scan - this may result in an incomplete set + of recognized functions - should probably + return an error but the driver may still be + viable for diagnostics and debugging so let's + let it continue. */ + printk(KERN_ERR "%s: Read Error %d when reading next PDT entry - " + "ending PDT scan.\n", + __func__, retval); + break; + } + } + printk(KERN_DEBUG "%s: Done scanning.", __func__); + + /* calculate the interrupt register count - used in the + ISR to read the correct number of interrupt registers */ + interruptRegisterCount = (interruptCount + 7) / 8; + sensor->interruptRegisterCount = interruptRegisterCount; /* TODO: Is this needed by the sensor anymore? */ + } + + return 0; + +exit_fail: + return retval; +} +EXPORT_SYMBOL(rmi_sensor_register_functions); + +int rmi_sensor_register_device(struct rmi_sensor_device *dev, int index) +{ + int status; + + printk(KERN_INFO "%s: Registering sensor device.\n", __func__); + + /* make name - sensor00, sensor01, etc. */ + dev_set_name(&dev->dev, "sensor%02d", index); + status = device_register(&dev->dev); + + return status; +} +EXPORT_SYMBOL(rmi_sensor_register_device); + +static void rmi_sensor_unregister_device(struct rmi_sensor_device *rmisensordev) +{ + printk(KERN_INFO "%s: Unregistering sensor device.\n", __func__); + + device_unregister(&rmisensordev->dev); +} +EXPORT_SYMBOL(rmi_sensor_unregister_device); + +int rmi_sensor_register_driver(struct rmi_sensor_driver *driver) +{ + static int index; + int ret; + char *drvrname; + + driver->workIsReady = false; + + printk(KERN_INFO "%s: Registering sensor driver.\n", __func__); + driver->dispatchIRQs = dispatchIRQs; + driver->attention = attention; + driver->config = config; + driver->probe = probe; + + /* assign the bus type for this driver to be rmi bus */ + driver->drv.bus = &rmi_bus_type; + driver->drv.suspend = rmi_sensor_suspend; + driver->drv.resume = rmi_sensor_resume; + /* Create a function device and function driver for this Fn */ + drvrname = kzalloc(sizeof(sensorname) + 4, GFP_KERNEL); + if (!drvrname) { + printk(KERN_ERR "%s: Error allocating memeory for rmi_sensor_driver name.\n", __func__); + return -ENOMEM; + } + sprintf(drvrname, "sensor%02d", index++); + + driver->drv.name = drvrname; + driver->module = driver->drv.owner; + + /* register the sensor driver */ + ret = driver_register(&driver->drv); + if (ret) { + printk(KERN_ERR "%s: Failed driver_register %d\n", + __func__, ret); + goto exit_fail; + } + + /* register the functions on the sensor */ + ret = rmi_sensor_register_functions(driver); + if (ret) { + printk(KERN_ERR "%s: Failed rmi_sensor_register_functions %d\n", + __func__, ret); + } + + /* configure the sensor - enable interrupts for each function, init work, set polling timer or adjust report rate, etc. */ + config(driver); + + printk(KERN_INFO "%s: sensor driver registration completed.", __func__); + +exit_fail: + return ret; +} +EXPORT_SYMBOL(rmi_sensor_register_driver); + +static void rmi_sensor_unregister_driver(struct rmi_sensor_driver *driver) +{ + printk(KERN_INFO "%s: Unregistering sensor driver.\n", __func__); + + /* Stop the polling timer if doing polling */ + if (rmi_polling_required(driver)) + hrtimer_cancel(&driver->timer); + + flush_scheduled_work(); /* Make sure all scheduled work is stopped */ + + driver_unregister(&driver->drv); +} +EXPORT_SYMBOL(rmi_sensor_unregister_driver); + + +static int __init rmi_sensor_init(void) +{ + printk(KERN_INFO "%s: RMI Sensor Init\n", __func__); + return 0; +} + +static void __exit rmi_sensor_exit(void) +{ + printk(KERN_INFO "%s: RMI Sensor Driver Exit\n", __func__); + flush_scheduled_work(); /* Make sure all scheduled work is stopped */ +} + + +module_init(rmi_sensor_init); +module_exit(rmi_sensor_exit); + +MODULE_AUTHOR("Synaptics, Inc."); +MODULE_DESCRIPTION("RMI4 Sensor Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/rmi_sensor.h b/drivers/input/touchscreen/rmi_sensor.h new file mode 100755 index 0000000..280dcc3 --- /dev/null +++ b/drivers/input/touchscreen/rmi_sensor.h @@ -0,0 +1,123 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) - RMI Sensor Module Header. + * Copyright (C) 2007 - 2011, Synaptics Incorporated + * + */ +/* + * + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#include <linux/device.h> + +#ifndef _RMI_SENSOR_H +#define _RMI_SENSOR_H + +struct rmi_sensor_driver { + struct module *module; + struct device_driver drv; + struct rmi_sensor_device *sensor_device; + + /* Attention Function + * This function is called by the low level isr in the physical + * driver. It merely schedules work to be done. + */ + void (*attention)(struct rmi_phys_driver *physdrvr, int instance); + /* Probe Function + * This function is called to give the sensor driver layer an + * opportunity to claim an RMI device. The sensor layer cannot + * read RMI registers at this point since the rmi physical driver + * has not been bound to it yet. Defer that to the config + * function call which occurs immediately after a successful probe. + */ + int (*probe)(struct rmi_sensor_driver *sensor); + /* Config Function + * This function is called after a successful probe. It gives the + * sensor driver an opportunity to query and/or configure an RMI + * device before data starts flowing. + */ + void (*config)(struct rmi_sensor_driver *sensor); + + /** Functions can call this in order to dispatch IRQs. */ + void (*dispatchIRQs)(struct rmi_sensor_driver *sensor, + unsigned int irqStatus); + + /* Register Functions + * This function is called in the rmi bus + * driver to have the sensor driver scan for any supported + * functions on the sensor and add devices for each one. + */ + void (*rmi_sensor_register_functions)(struct rmi_sensor_driver *sensor); + + unsigned int interruptRegisterCount; + + bool polling_required; + + /* pointer to the corresponding phys driver info for this sensor */ + /* The phys driver has the pointers to read, write, etc. */ + struct rmi_phys_driver *rpd; + + struct hrtimer timer; + struct work_struct work; + bool workIsReady; + + /* This list is for keeping around the list of sensors. + * Every time that a physical device is detected by the + * physical layer - be it i2c, spi, or some other - then + * we need to bind the physical layer to the device. When + * the Page Descriptor Table is scanned and when Function $01 + * is found then a new sensor device is created. The corresponding + * rmi_phys_driver struct pointer needs to be bound to the new + * sensor since Function $01 will be used to control and get + * interrupt information about the particular data source that is + * doing the interrupt. The rmi_phys_driver contains the pointers + * to the particular read, write, read_multiple, write_multiple + * functions for this device. This rmi_phys_driver struct will + * have to be up-bound to any drivers upstream that need it. + */ + + /* Standard kernel linked list implementation. + * Documentation on how to use it can be found at + * http://isis.poly.edu/kulesh/stuff/src/klist/. + */ + struct list_head sensor_drivers; /* link sensor drivers into list */ + + struct list_head functions; /* List of rmi_function_infos */ +}; + +/* macro to get the pointer to the device_driver struct from the sensor */ +#define to_rmi_sensor_driver(drv) container_of(drv, struct rmi_sensor_driver, drv); + +struct rmi_sensor_device { + struct rmi_sensor_driver *driver; + struct device dev; + + /* Standard kernel linked list implementation. + * Documentation on how to use it can be found at + * http://isis.poly.edu/kulesh/stuff/src/klist/. + */ + struct list_head sensors; /* link sensors into list */ +}; + +int rmi_sensor_register_device(struct rmi_sensor_device *dev, int index); +int rmi_sensor_register_driver(struct rmi_sensor_driver *driver); +int rmi_sensor_register_functions(struct rmi_sensor_driver *sensor); +bool rmi_polling_required(struct rmi_sensor_driver *sensor); + +#endif + diff --git a/drivers/input/touchscreen/rmi_spi.c b/drivers/input/touchscreen/rmi_spi.c new file mode 100755 index 0000000..82d0914 --- /dev/null +++ b/drivers/input/touchscreen/rmi_spi.c @@ -0,0 +1,477 @@ +/** + * + * Synaptics Register Mapped Interface (RMI4) SPI Physical Layer Driver. + * Copyright (C) 2008-2011, Synaptics Incorporated + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#include <linux/interrupt.h> +#include <linux/spi/spi.h> +#include <linux/platform_device.h> +#include <linux/semaphore.h> +#include "rmi_spi.h" +#include "rmi_drvr.h" + +#define DRIVER_NAME "rmi4_ts" +#define DEVICE_NAME "rmi4_ts" + +#define RMI_TDPB 65 /* 65 microseconds inter-byte delay between bytes for RMI chip*/ +#define SPI_BUFSIZ 32 + +static u8 *buf; + +/** This is a count of how many clients are accessing this driver. + */ +static int num_clients; +static struct rmi_spi_platformdata *platformdata; + + +/** + * This is the data kept on a per instance (client) basis. This data is + * always accessible by using the container_of() macro of the various elements + * inside. + */ +struct instance_data { + int instance_no; + int irq; + struct rmi_phys_driver rpd; + struct spi_device *spidev; +}; + + +static int spi_xfer(struct spi_device *spi, + const u8 *txbuf, unsigned n_tx, + u8 *rxbuf, unsigned n_rx) +{ + static DECLARE_MUTEX(lock); + + int status; + struct spi_message message; + struct spi_transfer x[2]; + u8 *local_buf; + + + if ((n_tx + n_rx) > SPI_BUFSIZ) + return -EINVAL; + + spi_message_init(&message); + memset(x, 0, sizeof x); + if (n_tx) { + x[0].len = n_tx; + x[0].delay_usecs = RMI_TDPB; + spi_message_add_tail(&x[0], &message); + } + if (n_rx) { +#ifdef CONFIG_ARCH_OMAP + x[1].len = n_rx-1; /* since OMAP has one dummy byte. */ +#else + x[1].len = n_rx; +#endif + x[1].delay_usecs = RMI_TDPB; + spi_message_add_tail(&x[1], &message); + } + + /* ... unless someone else is using the pre-allocated buffer */ + if (down_trylock(&lock)) { + local_buf = kmalloc(SPI_BUFSIZ, GFP_KERNEL); + if (!local_buf) + return -ENOMEM; + } else + local_buf = buf; + + memcpy(local_buf, txbuf, n_tx); + + + x[0].tx_buf = local_buf; + x[1].rx_buf = local_buf + n_tx; + + /* do the i/o */ + status = spi_sync(spi, &message); + if (status == 0) { + memcpy(rxbuf, x[1].rx_buf, n_rx); + status = message.status; + } else { + printk(KERN_ERR "spi_sync fials!\n"); + } + + if (x[0].tx_buf == buf) + up(&lock); + else + kfree(local_buf); + + return status; +} + +/** + * Read a single register through spi. + * \param[in] pd + * \param[in] address The address at which to start the data read. + * \param[out] valp Pointer to the buffer where the data will be stored. + * \return zero upon success (with the byte read in valp), non-zero upon error. + */ +static int +rmi_spi_read(struct rmi_phys_driver *pd, unsigned short address, char *valp) +{ + struct instance_data *id = container_of(pd, struct instance_data, rpd); + + char rxbuf[2]; + int retval; + unsigned short addr = address; + + addr = ((addr & 0xff00) >> 8); + address = ((address & 0x00ff) << 8); + addr |= address; + addr |= 0x80; /* High bit set indicates read. */ + + retval = spi_xfer(id->spidev, (u8 *)&addr, 2, rxbuf, 1); + + *valp = rxbuf[0]; + + return retval; +} + +/** + * Same as rmi_spi_read, except that multiple bytes are allowed to be read. + * \param[in] pd + * \param[in] address The address at which to start the data read. + * \param[out] valp Pointer to the buffer where the data will be stored. This + * buffer must be at least size bytes long. + * \param[in] size The number of bytes to be read. + * \return zero upon success (with the byte read in valp), non-zero upon error. + */ +static int +rmi_spi_read_multiple(struct rmi_phys_driver *pd, unsigned short address, + char *valp, int size) +{ + struct instance_data *id = container_of(pd, struct instance_data, rpd); + int retval; + + unsigned short addr = address; + + addr = ((addr & 0xff00) >> 8); + address = ((address & 0x00ff) << 8); + addr |= address; + addr |= 0x80; /* High bit set indicates read. */ + + retval = spi_xfer(id->spidev, (u8 *)&addr, 2, valp, size); + + return retval; +} + +/** + * Write a single register through spi. + * You can write multiple registers at once, but I made the functions for that + * seperate for performance reasons. Writing multiple requires allocation and + * freeing. + * \param[in] pd + * \param[in] address The address at which to start the write. + * \param[in] data The data to be written. + * \return one upon success, something else upon error. + */ +static int +rmi_spi_write(struct rmi_phys_driver *pd, unsigned short address, char data) +{ + struct instance_data *id = container_of(pd, struct instance_data, rpd); + unsigned char txbuf[4]; + int retval; + + txbuf[2] = data; + txbuf[1] = address; + txbuf[0] = address>>8; + + retval = spi_xfer(id->spidev, txbuf, 3, NULL, 0); + return retval ? 0 : 1; +} + +/** + * Write multiple registers. + * \param[in] pd + * \param[in] address The address at which to start the write. + * \param[in] valp A pointer to a buffer containing the data to be written. + * \param[in] size The number of bytes to write. + * \return one upon success, something else upon error. + */ +static int +rmi_spi_write_multiple(struct rmi_phys_driver *pd, unsigned short address, + char *valp, int size) +{ + struct instance_data *id = container_of(pd, struct instance_data, rpd); + unsigned char txbuf[32]; + int retval; + int i; + + txbuf[1] = address; + txbuf[0] = address>>8; + + for (i = 0; i < size; i++) + txbuf[i + 2] = valp[i]; + + retval = spi_xfer(id->spidev, txbuf, size+2, NULL, 0); + + return retval ? 0 : 1; +} + +/** + * This is the Interrupt Service Routine. It just notifies the application + * layer that attention is required. + */ +static irqreturn_t spi_attn_isr(int irq, void *info) +{ + struct instance_data *id = info; + disable_irq(id->irq); + if (id->rpd.attention) + id->rpd.attention(&id->rpd, id->instance_no); + return IRQ_HANDLED; +} + + +static int rmi_spi_probe(struct spi_device *spi) +{ + struct instance_data *id; + int retval; + int i; + bool found; + struct rmi_spi_data *rmispidata; + struct rmi_spi_platformdata *platformdata; + + printk(KERN_INFO "Probing RMI4 SPI device\n"); + + found = false; + + spi->bits_per_word = 8; + + spi->mode = SPI_MODE_3; + + buf = kmalloc(SPI_BUFSIZ, GFP_KERNEL); + if (!buf) { + printk(KERN_ERR "%s: Out of memory - can't allocate memory for spi buffer\n", __func__); + return -ENOMEM; + } + + retval = spi_setup(spi); + if (retval < 0) { + printk(KERN_ERR "%s: spi_setup failed\n", __func__); + return retval; + } + + id = kzalloc(sizeof(*id), GFP_KERNEL); + if (!id) { + printk(KERN_ERR "%s: Out of memory - can't allocate memory for instance data\n", __func__); + return -ENOMEM; + } + + id->spidev = spi; + id->rpd.name = DRIVER_NAME; + id->rpd.write = rmi_spi_write; + id->rpd.read = rmi_spi_read; + id->rpd.write_multiple = rmi_spi_write_multiple; + id->rpd.read_multiple = rmi_spi_read_multiple; + id->rpd.module = THIS_MODULE; + id->rpd.polling_required = true; /* default to polling if irq not used */ + + /* Loop through the client data and locate the one that was found. */ + + rmispidata = spi->dev.platform_data; + + /* Loop through the platform data and locate the one that matches the clients address */ + for (i = 0; i < rmispidata->num_clients; i++) { + platformdata = &(rmispidata->platformdata[i]); + if (platformdata->chip == RMI_SUPPORT) { + id->instance_no = i; + found = true; + + /* set the device name using the instance_no appended to DEVICE_NAME to make a unique name */ + dev_set_name(&spi->dev, "rmi4-spi%d", id->instance_no); + /* + * Determine if we need to poll (inefficient) or use interrupts. + */ + if (platformdata->irq) { + int irqtype; + + id->irq = platformdata->irq; + switch (platformdata->irq_type) { + case IORESOURCE_IRQ_HIGHEDGE: + irqtype = IRQF_TRIGGER_RISING; + break; + case IORESOURCE_IRQ_LOWEDGE: + irqtype = IRQF_TRIGGER_FALLING; + break; + case IORESOURCE_IRQ_HIGHLEVEL: + irqtype = IRQF_TRIGGER_HIGH; + break; + case IORESOURCE_IRQ_LOWLEVEL: + irqtype = IRQF_TRIGGER_LOW; + break; + default: + dev_warn(&spi->dev, "%s: Invalid IRQ flags in platform data\n", __func__); + kfree(id); + return -ENXIO; + } + + retval = request_irq(id->irq, spi_attn_isr, irqtype, "rmi_spi", id); + if (retval) { + dev_info(&spi->dev, "%s: Unable to get attn irq %d. Reverting to polling.\n", __func__, id->irq); + id->rpd.polling_required = true; + } else { + dev_dbg(&spi->dev, "%s: got irq\n", __func__); + id->rpd.polling_required = false; + id->rpd.irq = id->irq; + } + } else { + id->rpd.polling_required = true; + dev_info(&spi->dev, "%s: No IRQ info given. Polling required.\n", __func__); + } + } + } + + /* if went through all the platform data list and didn't find a match then notify that we are defaulting to polling */ + if (!found) { + dev_info(&spi->dev, "%s: No platform data match found.Defaulting to use polling.\n", __func__); + } + + /* Store instance data for later access. */ + if (id) { + spi_set_drvdata(spi, id); + } + + /* Register the sensor driver - which will trigger a scan of the PDT. */ + retval = rmi_register_sensors(&id->rpd); + if (retval) { + printk(KERN_ERR "rmi_register_phys_driver failed.\n"); + if (id->irq) + free_irq(id->irq, id); + kfree(id); + return retval; + } + + printk(KERN_INFO "%s: Successfully Registered %s\n", __func__, id->rpd.name); + + return 0; +} + +static int rmi_spi_suspend(struct spi_device *spi, pm_message_t message) +{ + return 0; +} + +static int rmi_spi_resume(struct spi_device *spi) +{ + return 0; +} + +static int __devexit rmi_spi_remove(struct spi_device *spi) +{ + struct instance_data *id = spi_get_drvdata(spi); + + rmi_spi_suspend(spi, PMSG_SUSPEND); + + rmi_unregister_sensors(&id->rpd); + + if (id) { + if (id->irq) + free_irq(id->irq, id); + kfree(id); + } + + return 0; +} + +static struct spi_driver rmi_spi_driver = { + .driver = { + .name = "rmi_spi", + .bus = &spi_bus_type, + .owner = THIS_MODULE, + }, + .probe = rmi_spi_probe, + .remove = __devexit_p(rmi_spi_remove), + .suspend = rmi_spi_suspend, + .resume = rmi_spi_resume, +}; + +/** + * The Platform Driver probe function. We just tell the spi subsystem about + * ourselves in this call. + */ +static int +rmi_spi_plat_probe(struct platform_device *dev) +{ + struct rmi_spi_data *mid = dev->dev.platform_data; + + if (!mid) { + printk(KERN_ERR "A platform device must contain rmi_spi_data\n"); + return -ENXIO; + } + + num_clients = mid->num_clients; + platformdata = mid->platformdata; + + return spi_register_driver(&rmi_spi_driver); +} + +/** + * Tell the spi subsystem that we're done. + * \param[in] dev + * \return Always returns 0. + */ +static int +rmi_spi_plat_remove(struct platform_device *dev) +{ + spi_unregister_driver(&rmi_spi_driver); + return 0; +} + +/** + * Structure used to tell the Platform Driver subsystem about us. + */ +static struct platform_driver rmi_spi_platform_driver = { + .driver = { + .name = "rmi_spi_plat", + }, + .probe = rmi_spi_plat_probe, + .remove = rmi_spi_plat_remove, +}; + +static int __init rmi_spi_init(void) +{ + return platform_driver_register(&rmi_spi_platform_driver); +} +module_init(rmi_spi_init); + +static void __exit rmi_spi_exit(void) +{ + if (buf) { + kfree(buf); + buf = NULL; + } + platform_driver_unregister(&rmi_spi_platform_driver); +} +module_exit(rmi_spi_exit); + +/** Standard driver module information - the author of the module. + */ +MODULE_AUTHOR("Synaptics, Inc."); +/** Standard driver module information - a summary description of this module. + */ +MODULE_DESCRIPTION("RMI4 Driver SPI Physical Layer"); +/** Standard driver module information - the license under which this module + * is included in the kernel. + */ +MODULE_LICENSE("GPL"); + diff --git a/drivers/input/touchscreen/rmi_spi.h b/drivers/input/touchscreen/rmi_spi.h new file mode 100755 index 0000000..b957338 --- /dev/null +++ b/drivers/input/touchscreen/rmi_spi.h @@ -0,0 +1,53 @@ +/** + * + * Register Mapped Interface SPI Physical Layer Driver Header File. + * Copyright (C) 2008-2011, Synaptics Incorporated + * + */ +/* + * This file is licensed under the GPL2 license. + * + *############################################################################# + * GPL + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + *############################################################################# + */ + +#define RMI_CHIP_VER_3 0 +#define RMI_CHIP_VER_4 1 + +#define RMI_SUPPORT (RMI_CHIP_VER_3|RMI_CHIP_VER_4) + +/** Platform-specific configuration data. + * This structure is used by the platform-specific driver to designate + * specific information about the hardware. A platform client may supply + * an array of these to the rmi_phys_spi driver. + */ +struct rmi_spi_platformdata { + /* struct spi_device spi_dev; */ + int chip; + + /** The number of the irq. Set to zero if polling is required. */ + int irq; + + /** The type of the irq (e.g., IRQF_TRIGGER_FALLING). Only valid if + * irq != 0 */ + int irq_type; +}; + +/** Descriptor structure. + * Describes the number of spi devices on the bus that speak RMI. + */ +struct rmi_spi_data { + int num_clients; + struct rmi_spi_platformdata *platformdata; +};
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