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Subject[2.6 patch] some overdue I2C driver removal
This patch contains the overdue removal of three I2C drivers.

Signed-off-by: Adrian Bunk <bunk@kernel.org>

---
Documentation/feature-removal-schedule.txt | 8
drivers/i2c/busses/Kconfig | 59 ------
drivers/i2c/busses/Makefile | 3
drivers/i2c/busses/i2c-ixp2000.c | 167 -------------------
drivers/i2c/busses/i2c-ixp4xx.c | 178 ---------------------
drivers/i2c/busses/scx200_i2c.c | 131 ---------------
6 files changed, 546 deletions(-)
6a8e0e37019c0ffeb0071fae30210baf2c3bdd75
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 2af3835..9114379 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -218,14 +218,6 @@ Who: Len Brown <len.brown@intel.com>

---------------------------

-What: i2c-ixp2000, i2c-ixp4xx and scx200_i2c drivers
-When: September 2007
-Why: Obsolete. The new i2c-gpio driver replaces all hardware-specific
- I2C-over-GPIO drivers.
-Who: Jean Delvare <khali@linux-fr.org>
-
----------------------------
-
What: 'time' kernel boot parameter
When: January 2008
Why: replaced by 'printk.time=<value>' so that printk timestamps can be
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index c466c6c..1b1a1d7 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -259,34 +259,6 @@ config I2C_IOP3XX
This driver can also be built as a module. If so, the module
will be called i2c-iop3xx.

-config I2C_IXP4XX
- tristate "IXP4xx GPIO-Based I2C Interface (DEPRECATED)"
- depends on ARCH_IXP4XX
- select I2C_ALGOBIT
- help
- Say Y here if you have an Intel IXP4xx(420,421,422,425) based
- system and are using GPIO lines for an I2C bus.
-
- This support is also available as a module. If so, the module
- will be called i2c-ixp4xx.
-
- This driver is deprecated and will be dropped soon. Use i2c-gpio
- instead.
-
-config I2C_IXP2000
- tristate "IXP2000 GPIO-Based I2C Interface (DEPRECATED)"
- depends on ARCH_IXP2000
- select I2C_ALGOBIT
- help
- Say Y here if you have an Intel IXP2000 (2400, 2800, 2850) based
- system and are using GPIO lines for an I2C bus.
-
- This support is also available as a module. If so, the module
- will be called i2c-ixp2000.
-
- This driver is deprecated and will be dropped soon. Use i2c-gpio
- instead.
-
config I2C_POWERMAC
tristate "Powermac I2C interface"
depends on PPC_PMAC
@@ -446,37 +418,6 @@ config I2C_SIMTEC
This driver can also be built as a module. If so, the module
will be called i2c-simtec.

-config SCx200_I2C
- tristate "NatSemi SCx200 I2C using GPIO pins (DEPRECATED)"
- depends on SCx200_GPIO
- select I2C_ALGOBIT
- help
- Enable the use of two GPIO pins of a SCx200 processor as an I2C bus.
-
- If you don't know what to do here, say N.
-
- This support is also available as a module. If so, the module
- will be called scx200_i2c.
-
- This driver is deprecated and will be dropped soon. Use i2c-gpio
- (or scx200_acb) instead.
-
-config SCx200_I2C_SCL
- int "GPIO pin used for SCL"
- depends on SCx200_I2C
- default "12"
- help
- Enter the GPIO pin number used for the SCL signal. This value can
- also be specified with a module parameter.
-
-config SCx200_I2C_SDA
- int "GPIO pin used for SDA"
- depends on SCx200_I2C
- default "13"
- help
- Enter the GPIO pin number used for the SSA signal. This value can
- also be specified with a module parameter.
-
config SCx200_ACB
tristate "Geode ACCESS.bus support"
depends on X86_32 && PCI
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 81d43c2..7141e4a 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -19,8 +19,6 @@ obj-$(CONFIG_I2C_I801) += i2c-i801.o
obj-$(CONFIG_I2C_I810) += i2c-i810.o
obj-$(CONFIG_I2C_IBM_IIC) += i2c-ibm_iic.o
obj-$(CONFIG_I2C_IOP3XX) += i2c-iop3xx.o
-obj-$(CONFIG_I2C_IXP2000) += i2c-ixp2000.o
-obj-$(CONFIG_I2C_IXP4XX) += i2c-ixp4xx.o
obj-$(CONFIG_I2C_POWERMAC) += i2c-powermac.o
obj-$(CONFIG_I2C_MPC) += i2c-mpc.o
obj-$(CONFIG_I2C_MV64XXX) += i2c-mv64xxx.o
@@ -52,7 +50,6 @@ obj-$(CONFIG_I2C_VIA) += i2c-via.o
obj-$(CONFIG_I2C_VIAPRO) += i2c-viapro.o
obj-$(CONFIG_I2C_VOODOO3) += i2c-voodoo3.o
obj-$(CONFIG_SCx200_ACB) += scx200_acb.o
-obj-$(CONFIG_SCx200_I2C) += scx200_i2c.o

ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
EXTRA_CFLAGS += -DDEBUG
diff --git a/drivers/i2c/busses/i2c-ixp2000.c b/drivers/i2c/busses/i2c-ixp2000.c
deleted file mode 100644
index 6352121..0000000
--- a/drivers/i2c/busses/i2c-ixp2000.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * drivers/i2c/busses/i2c-ixp2000.c
- *
- * I2C adapter for IXP2000 systems using GPIOs for I2C bus
- *
- * Author: Deepak Saxena <dsaxena@plexity.net>
- * Based on IXDP2400 code by: Naeem M. Afzal <naeem.m.afzal@intel.com>
- * Made generic by: Jeff Daly <jeffrey.daly@intel.com>
- *
- * Copyright (c) 2003-2004 MontaVista Software Inc.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- *
- * From Jeff Daly:
- *
- * I2C adapter driver for Intel IXDP2xxx platforms. This should work for any
- * IXP2000 platform if it uses the HW GPIO in the same manner. Basically,
- * SDA and SCL GPIOs have external pullups. Setting the respective GPIO to
- * an input will make the signal a '1' via the pullup. Setting them to
- * outputs will pull them down.
- *
- * The GPIOs are open drain signals and are used as configuration strap inputs
- * during power-up so there's generally a buffer on the board that needs to be
- * 'enabled' to drive the GPIOs.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-
-#include <asm/hardware.h> /* Pick up IXP2000-specific bits */
-#include <asm/arch/gpio.h>
-
-static inline int ixp2000_scl_pin(void *data)
-{
- return ((struct ixp2000_i2c_pins*)data)->scl_pin;
-}
-
-static inline int ixp2000_sda_pin(void *data)
-{
- return ((struct ixp2000_i2c_pins*)data)->sda_pin;
-}
-
-
-static void ixp2000_bit_setscl(void *data, int val)
-{
- int i = 5000;
-
- if (val) {
- gpio_line_config(ixp2000_scl_pin(data), GPIO_IN);
- while(!gpio_line_get(ixp2000_scl_pin(data)) && i--);
- } else {
- gpio_line_config(ixp2000_scl_pin(data), GPIO_OUT);
- }
-}
-
-static void ixp2000_bit_setsda(void *data, int val)
-{
- if (val) {
- gpio_line_config(ixp2000_sda_pin(data), GPIO_IN);
- } else {
- gpio_line_config(ixp2000_sda_pin(data), GPIO_OUT);
- }
-}
-
-static int ixp2000_bit_getscl(void *data)
-{
- return gpio_line_get(ixp2000_scl_pin(data));
-}
-
-static int ixp2000_bit_getsda(void *data)
-{
- return gpio_line_get(ixp2000_sda_pin(data));
-}
-
-struct ixp2000_i2c_data {
- struct ixp2000_i2c_pins *gpio_pins;
- struct i2c_adapter adapter;
- struct i2c_algo_bit_data algo_data;
-};
-
-static int ixp2000_i2c_remove(struct platform_device *plat_dev)
-{
- struct ixp2000_i2c_data *drv_data = platform_get_drvdata(plat_dev);
-
- platform_set_drvdata(plat_dev, NULL);
-
- i2c_del_adapter(&drv_data->adapter);
-
- kfree(drv_data);
-
- return 0;
-}
-
-static int ixp2000_i2c_probe(struct platform_device *plat_dev)
-{
- int err;
- struct ixp2000_i2c_pins *gpio = plat_dev->dev.platform_data;
- struct ixp2000_i2c_data *drv_data =
- kzalloc(sizeof(struct ixp2000_i2c_data), GFP_KERNEL);
-
- if (!drv_data)
- return -ENOMEM;
- drv_data->gpio_pins = gpio;
-
- drv_data->algo_data.data = gpio;
- drv_data->algo_data.setsda = ixp2000_bit_setsda;
- drv_data->algo_data.setscl = ixp2000_bit_setscl;
- drv_data->algo_data.getsda = ixp2000_bit_getsda;
- drv_data->algo_data.getscl = ixp2000_bit_getscl;
- drv_data->algo_data.udelay = 6;
- drv_data->algo_data.timeout = 100;
-
- drv_data->adapter.id = I2C_HW_B_IXP2000,
- strlcpy(drv_data->adapter.name, plat_dev->dev.driver->name,
- sizeof(drv_data->adapter.name));
- drv_data->adapter.algo_data = &drv_data->algo_data,
-
- drv_data->adapter.dev.parent = &plat_dev->dev;
-
- gpio_line_config(gpio->sda_pin, GPIO_IN);
- gpio_line_config(gpio->scl_pin, GPIO_IN);
- gpio_line_set(gpio->scl_pin, 0);
- gpio_line_set(gpio->sda_pin, 0);
-
- if ((err = i2c_bit_add_bus(&drv_data->adapter)) != 0) {
- dev_err(&plat_dev->dev, "Could not install, error %d\n", err);
- kfree(drv_data);
- return err;
- }
-
- platform_set_drvdata(plat_dev, drv_data);
-
- return 0;
-}
-
-static struct platform_driver ixp2000_i2c_driver = {
- .probe = ixp2000_i2c_probe,
- .remove = ixp2000_i2c_remove,
- .driver = {
- .name = "IXP2000-I2C",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init ixp2000_i2c_init(void)
-{
- return platform_driver_register(&ixp2000_i2c_driver);
-}
-
-static void __exit ixp2000_i2c_exit(void)
-{
- platform_driver_unregister(&ixp2000_i2c_driver);
-}
-
-module_init(ixp2000_i2c_init);
-module_exit(ixp2000_i2c_exit);
-
-MODULE_AUTHOR ("Deepak Saxena <dsaxena@plexity.net>");
-MODULE_DESCRIPTION("IXP2000 GPIO-based I2C bus driver");
-MODULE_LICENSE("GPL");
-
diff --git a/drivers/i2c/busses/i2c-ixp4xx.c b/drivers/i2c/busses/i2c-ixp4xx.c
deleted file mode 100644
index 069ed7f..0000000
--- a/drivers/i2c/busses/i2c-ixp4xx.c
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * drivers/i2c/busses/i2c-ixp4xx.c
- *
- * Intel's IXP4xx XScale NPU chipsets (IXP420, 421, 422, 425) do not have
- * an on board I2C controller but provide 16 GPIO pins that are often
- * used to create an I2C bus. This driver provides an i2c_adapter
- * interface that plugs in under algo_bit and drives the GPIO pins
- * as instructed by the alogorithm driver.
- *
- * Author: Deepak Saxena <dsaxena@plexity.net>
- *
- * Copyright (c) 2003-2004 MontaVista Software Inc.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- *
- * NOTE: Since different platforms will use different GPIO pins for
- * I2C, this driver uses an IXP4xx-specific platform_data
- * pointer to pass the GPIO numbers to the driver. This
- * allows us to support all the different IXP4xx platforms
- * w/o having to put #ifdefs in this driver.
- *
- * See arch/arm/mach-ixp4xx/ixdp425.c for an example of building a
- * device list and filling in the ixp4xx_i2c_pins data structure
- * that is passed as the platform_data to this driver.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-
-#include <asm/hardware.h> /* Pick up IXP4xx-specific bits */
-
-static inline int ixp4xx_scl_pin(void *data)
-{
- return ((struct ixp4xx_i2c_pins*)data)->scl_pin;
-}
-
-static inline int ixp4xx_sda_pin(void *data)
-{
- return ((struct ixp4xx_i2c_pins*)data)->sda_pin;
-}
-
-static void ixp4xx_bit_setscl(void *data, int val)
-{
- gpio_line_set(ixp4xx_scl_pin(data), 0);
- gpio_line_config(ixp4xx_scl_pin(data),
- val ? IXP4XX_GPIO_IN : IXP4XX_GPIO_OUT );
-}
-
-static void ixp4xx_bit_setsda(void *data, int val)
-{
- gpio_line_set(ixp4xx_sda_pin(data), 0);
- gpio_line_config(ixp4xx_sda_pin(data),
- val ? IXP4XX_GPIO_IN : IXP4XX_GPIO_OUT );
-}
-
-static int ixp4xx_bit_getscl(void *data)
-{
- int scl;
-
- gpio_line_config(ixp4xx_scl_pin(data), IXP4XX_GPIO_IN );
- gpio_line_get(ixp4xx_scl_pin(data), &scl);
-
- return scl;
-}
-
-static int ixp4xx_bit_getsda(void *data)
-{
- int sda;
-
- gpio_line_config(ixp4xx_sda_pin(data), IXP4XX_GPIO_IN );
- gpio_line_get(ixp4xx_sda_pin(data), &sda);
-
- return sda;
-}
-
-struct ixp4xx_i2c_data {
- struct ixp4xx_i2c_pins *gpio_pins;
- struct i2c_adapter adapter;
- struct i2c_algo_bit_data algo_data;
-};
-
-static int ixp4xx_i2c_remove(struct platform_device *plat_dev)
-{
- struct ixp4xx_i2c_data *drv_data = platform_get_drvdata(plat_dev);
-
- platform_set_drvdata(plat_dev, NULL);
-
- i2c_del_adapter(&drv_data->adapter);
-
- kfree(drv_data);
-
- return 0;
-}
-
-static int ixp4xx_i2c_probe(struct platform_device *plat_dev)
-{
- int err;
- struct ixp4xx_i2c_pins *gpio = plat_dev->dev.platform_data;
- struct ixp4xx_i2c_data *drv_data =
- kzalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL);
-
- if(!drv_data)
- return -ENOMEM;
-
- drv_data->gpio_pins = gpio;
-
- /*
- * We could make a lot of these structures static, but
- * certain platforms may have multiple GPIO-based I2C
- * buses for various device domains, so we need per-device
- * algo_data->data.
- */
- drv_data->algo_data.data = gpio;
- drv_data->algo_data.setsda = ixp4xx_bit_setsda;
- drv_data->algo_data.setscl = ixp4xx_bit_setscl;
- drv_data->algo_data.getsda = ixp4xx_bit_getsda;
- drv_data->algo_data.getscl = ixp4xx_bit_getscl;
- drv_data->algo_data.udelay = 10;
- drv_data->algo_data.timeout = 100;
-
- drv_data->adapter.id = I2C_HW_B_IXP4XX;
- drv_data->adapter.class = I2C_CLASS_HWMON;
- strlcpy(drv_data->adapter.name, plat_dev->dev.driver->name,
- sizeof(drv_data->adapter.name));
- drv_data->adapter.algo_data = &drv_data->algo_data;
-
- drv_data->adapter.dev.parent = &plat_dev->dev;
-
- gpio_line_config(gpio->scl_pin, IXP4XX_GPIO_IN);
- gpio_line_config(gpio->sda_pin, IXP4XX_GPIO_IN);
- gpio_line_set(gpio->scl_pin, 0);
- gpio_line_set(gpio->sda_pin, 0);
-
- err = i2c_bit_add_bus(&drv_data->adapter);
- if (err) {
- printk(KERN_ERR "ERROR: Could not install %s\n", plat_dev->dev.bus_id);
-
- kfree(drv_data);
- return err;
- }
-
- platform_set_drvdata(plat_dev, drv_data);
-
- return 0;
-}
-
-static struct platform_driver ixp4xx_i2c_driver = {
- .probe = ixp4xx_i2c_probe,
- .remove = ixp4xx_i2c_remove,
- .driver = {
- .name = "IXP4XX-I2C",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init ixp4xx_i2c_init(void)
-{
- return platform_driver_register(&ixp4xx_i2c_driver);
-}
-
-static void __exit ixp4xx_i2c_exit(void)
-{
- platform_driver_unregister(&ixp4xx_i2c_driver);
-}
-
-module_init(ixp4xx_i2c_init);
-module_exit(ixp4xx_i2c_exit);
-
-MODULE_DESCRIPTION("GPIO-based I2C adapter for IXP4xx systems");
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
-
diff --git a/drivers/i2c/busses/scx200_i2c.c b/drivers/i2c/busses/scx200_i2c.c
deleted file mode 100644
index c3022a0..0000000
--- a/drivers/i2c/busses/scx200_i2c.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/* linux/drivers/i2c/busses/scx200_i2c.c
-
- Copyright (c) 2001,2002 Christer Weinigel <wingel@nano-system.com>
-
- National Semiconductor SCx200 I2C bus on GPIO pins
-
- Based on i2c-velleman.c Copyright (C) 1995-96, 2000 Simon G. Vogl
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- 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.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-#include <asm/io.h>
-
-#include <linux/scx200_gpio.h>
-
-#define NAME "scx200_i2c"
-
-MODULE_AUTHOR("Christer Weinigel <wingel@nano-system.com>");
-MODULE_DESCRIPTION("NatSemi SCx200 I2C Driver");
-MODULE_LICENSE("GPL");
-
-static int scl = CONFIG_SCx200_I2C_SCL;
-static int sda = CONFIG_SCx200_I2C_SDA;
-
-module_param(scl, int, 0);
-MODULE_PARM_DESC(scl, "GPIO line for SCL");
-module_param(sda, int, 0);
-MODULE_PARM_DESC(sda, "GPIO line for SDA");
-
-static void scx200_i2c_setscl(void *data, int state)
-{
- scx200_gpio_set(scl, state);
-}
-
-static void scx200_i2c_setsda(void *data, int state)
-{
- scx200_gpio_set(sda, state);
-}
-
-static int scx200_i2c_getscl(void *data)
-{
- return scx200_gpio_get(scl);
-}
-
-static int scx200_i2c_getsda(void *data)
-{
- return scx200_gpio_get(sda);
-}
-
-/* ------------------------------------------------------------------------
- * Encapsulate the above functions in the correct operations structure.
- * This is only done when more than one hardware adapter is supported.
- */
-
-static struct i2c_algo_bit_data scx200_i2c_data = {
- .setsda = scx200_i2c_setsda,
- .setscl = scx200_i2c_setscl,
- .getsda = scx200_i2c_getsda,
- .getscl = scx200_i2c_getscl,
- .udelay = 10,
- .timeout = 100,
-};
-
-static struct i2c_adapter scx200_i2c_ops = {
- .owner = THIS_MODULE,
- .id = I2C_HW_B_SCX200,
- .algo_data = &scx200_i2c_data,
- .name = "NatSemi SCx200 I2C",
-};
-
-static int scx200_i2c_init(void)
-{
- pr_debug(NAME ": NatSemi SCx200 I2C Driver\n");
-
- if (!scx200_gpio_present()) {
- printk(KERN_ERR NAME ": no SCx200 gpio pins available\n");
- return -ENODEV;
- }
-
- pr_debug(NAME ": SCL=GPIO%02u, SDA=GPIO%02u\n", scl, sda);
-
- if (scl == -1 || sda == -1 || scl == sda) {
- printk(KERN_ERR NAME ": scl and sda must be specified\n");
- return -EINVAL;
- }
-
- /* Configure GPIOs as open collector outputs */
- scx200_gpio_configure(scl, ~2, 5);
- scx200_gpio_configure(sda, ~2, 5);
-
- if (i2c_bit_add_bus(&scx200_i2c_ops) < 0) {
- printk(KERN_ERR NAME ": adapter %s registration failed\n",
- scx200_i2c_ops.name);
- return -ENODEV;
- }
-
- return 0;
-}
-
-static void scx200_i2c_cleanup(void)
-{
- i2c_del_adapter(&scx200_i2c_ops);
-}
-
-module_init(scx200_i2c_init);
-module_exit(scx200_i2c_cleanup);
-
-/*
- Local variables:
- compile-command: "make -k -C ../.. SUBDIRS=drivers/i2c modules"
- c-basic-offset: 8
- End:
-*/
-
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