Messages in this thread Patch in this message | | | From | Donggeun Kim <> | Subject | [PATCH v2 1/2] MFD: MAX77693: add MAX77693 MFD driver | Date | Mon, 12 Dec 2011 19:39:10 +0900 |
| |
MAX77693 is a multi-function devices. It includes PMIC, MUIC(Micro USB Interface Controller), flash LED control, and Haptic motor control.
This patch adds MFD driver for MAX77693 to enable its sub devices.
Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> --- drivers/mfd/Kconfig | 12 ++ drivers/mfd/Makefile | 1 + drivers/mfd/max77693.c | 224 ++++++++++++++++++++++++++++++++++ include/linux/mfd/max77693-private.h | 213 ++++++++++++++++++++++++++++++++ include/linux/mfd/max77693.h | 37 ++++++ 5 files changed, 487 insertions(+), 0 deletions(-) create mode 100644 drivers/mfd/max77693.c create mode 100644 include/linux/mfd/max77693-private.h create mode 100644 include/linux/mfd/max77693.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index f1391c2..271656f 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -371,6 +371,18 @@ config MFD_MAX8998 additional drivers must be enabled in order to use the functionality of the device. +config MFD_MAX77693 + bool "Maxim Semiconductor MAX77693 PMIC Support" + depends on I2C=y && GENERIC_HARDIRQS + select MFD_CORE + help + Say yes here to support for Maxim Semiconductor MAX77963. + This is a companion Power Management IC with Flash, Haptic, Charger, + and MUIC(Micro USB Interface Controller) controls on chip. + This driver provides common support for accessing the device; + additional drivers must be enabled in order to use the functionality + of the device. + config MFD_WM8400 tristate "Support Wolfson Microelectronics WM8400" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index b2292eb..3e23b81 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -71,6 +71,7 @@ max8925-objs := max8925-core.o max8925-i2c.o obj-$(CONFIG_MFD_MAX8925) += max8925.o obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o obj-$(CONFIG_MFD_MAX8998) += max8998.o max8998-irq.o +obj-$(CONFIG_MFD_MAX77693) += max77693.o pcf50633-objs := pcf50633-core.o pcf50633-irq.o obj-$(CONFIG_MFD_PCF50633) += pcf50633.o diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c new file mode 100644 index 0000000..3408984 --- /dev/null +++ b/drivers/mfd/max77693.c @@ -0,0 +1,224 @@ +/* + * max77693.c - mfd core driver for the MAX 77693 + * + * Copyright (C) 2011 Samsung Electronics + * SangYoung Son <hello.son@smasung.com> + * + * This program is not provided / owned by Maxim Integrated Products. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * This driver is based on max8997.c + */ + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/pm_runtime.h> +#include <linux/mutex.h> +#include <linux/mfd/core.h> +#include <linux/mfd/max77693.h> +#include <linux/mfd/max77693-private.h> +#include <linux/regulator/machine.h> + +#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */ +#define I2C_ADDR_MUIC (0x4A >> 1) +#define I2C_ADDR_HAPTIC (0x90 >> 1) + +static struct mfd_cell max77693_devs[] = { + { .name = "max77693-pmic", }, + { .name = "max77693-charger", }, + { .name = "max77693-flash", }, + { .name = "max77693-muic", }, + { .name = "max77693-haptic", }, +}; + +int max77693_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest) +{ + struct max77693_dev *max77693 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77693->iolock); + ret = i2c_smbus_read_byte_data(i2c, reg); + mutex_unlock(&max77693->iolock); + if (ret < 0) + return ret; + + ret &= 0xff; + *dest = ret; + return 0; +} +EXPORT_SYMBOL_GPL(max77693_read_reg); + +int max77693_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf) +{ + struct max77693_dev *max77693 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77693->iolock); + ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf); + mutex_unlock(&max77693->iolock); + if (ret < 0) + return ret; + + return 0; +} +EXPORT_SYMBOL_GPL(max77693_bulk_read); + +int max77693_write_reg(struct i2c_client *i2c, u8 reg, u8 value) +{ + struct max77693_dev *max77693 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77693->iolock); + ret = i2c_smbus_write_byte_data(i2c, reg, value); + mutex_unlock(&max77693->iolock); + return ret; +} +EXPORT_SYMBOL_GPL(max77693_write_reg); + +int max77693_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf) +{ + struct max77693_dev *max77693 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77693->iolock); + ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf); + mutex_unlock(&max77693->iolock); + if (ret < 0) + return ret; + + return 0; +} +EXPORT_SYMBOL_GPL(max77693_bulk_write); + +int max77693_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask) +{ + struct max77693_dev *max77693 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77693->iolock); + ret = i2c_smbus_read_byte_data(i2c, reg); + if (ret >= 0) { + u8 old_val = ret & 0xff; + u8 new_val = (val & mask) | (old_val & (~mask)); + ret = i2c_smbus_write_byte_data(i2c, reg, new_val); + } + mutex_unlock(&max77693->iolock); + return ret; +} +EXPORT_SYMBOL_GPL(max77693_update_reg); + +static int max77693_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct max77693_dev *max77693; + struct max77693_platform_data *pdata = i2c->dev.platform_data; + u8 reg_data; + int ret = 0; + + max77693 = devm_kzalloc(&i2c->dev, + sizeof(struct max77693_dev), GFP_KERNEL); + if (max77693 == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, max77693); + max77693->dev = &i2c->dev; + max77693->i2c = i2c; + max77693->irq = i2c->irq; + max77693->type = id->driver_data; + + if (!pdata) + goto err; + + max77693->wakeup = pdata->wakeup; + + mutex_init(&max77693->iolock); + + if (max77693_read_reg(i2c, MAX77693_PMIC_REG_PMIC_ID2, ®_data) < 0) { + dev_err(max77693->dev, + "device not found on this channel\n"); + ret = -ENODEV; + goto err; + } else + dev_info(max77693->dev, "device ID: 0x%x\n", reg_data); + + max77693->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC); + i2c_set_clientdata(max77693->muic, max77693); + + max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC); + i2c_set_clientdata(max77693->haptic, max77693); + + pm_runtime_set_active(max77693->dev); + + ret = mfd_add_devices(max77693->dev, -1, max77693_devs, + ARRAY_SIZE(max77693_devs), NULL, 0); + if (ret < 0) + goto err_mfd; + + + return ret; + +err_mfd: + i2c_unregister_device(max77693->muic); + i2c_unregister_device(max77693->haptic); +err: + return ret; +} + +static int max77693_i2c_remove(struct i2c_client *i2c) +{ + struct max77693_dev *max77693 = i2c_get_clientdata(i2c); + + mfd_remove_devices(max77693->dev); + i2c_unregister_device(max77693->muic); + i2c_unregister_device(max77693->haptic); + + return 0; +} + +static const struct i2c_device_id max77693_i2c_id[] = { + { "max77693", TYPE_MAX77693 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max77693_i2c_id); + +static struct i2c_driver max77693_i2c_driver = { + .driver = { + .name = "max77693", + .owner = THIS_MODULE, + }, + .probe = max77693_i2c_probe, + .remove = max77693_i2c_remove, + .id_table = max77693_i2c_id, +}; + +static int __init max77693_i2c_init(void) +{ + return i2c_add_driver(&max77693_i2c_driver); +} +/* init early so consumer devices can complete system boot */ +subsys_initcall(max77693_i2c_init); + +static void __exit max77693_i2c_exit(void) +{ + i2c_del_driver(&max77693_i2c_driver); +} +module_exit(max77693_i2c_exit); + +MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver"); +MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/max77693-private.h b/include/linux/mfd/max77693-private.h new file mode 100644 index 0000000..1625737 --- /dev/null +++ b/include/linux/mfd/max77693-private.h @@ -0,0 +1,213 @@ +/* + * max77693-private.h - Voltage regulator driver for the Maxim 77693 + * + * Copyright (C) 2011 Samsung Electrnoics + * SangYoung Son <hello.son@samsung.com> + * + * This program is not provided / owned by Maxim Integrated Products. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __LINUX_MFD_MAX77693_PRIV_H +#define __LINUX_MFD_MAX77693_PRIV_H + +#include <linux/i2c.h> + +#define MAX77693_NUM_IRQ_MUIC_REGS 3 +#define MAX77693_REG_INVALID (0xff) + +/* Slave addr = 0xCC: PMIC, Charger, Flash LED */ +enum max77693_pmic_reg { + MAX77693_LED_REG_IFLASH1 = 0x00, + MAX77693_LED_REG_IFLASH2 = 0x01, + MAX77693_LED_REG_ITORCH = 0x02, + MAX77693_LED_REG_ITORCHTIMER = 0x03, + MAX77693_LED_REG_FLASH_TIMER = 0x04, + MAX77693_LED_REG_FLASH_EN = 0x05, + MAX77693_LED_REG_MAX_FLASH1 = 0x06, + MAX77693_LED_REG_MAX_FLASH2 = 0x07, + MAX77693_LED_REG_MAX_FLASH3 = 0x08, + MAX77693_LED_REG_MAX_FLASH4 = 0x09, + MAX77693_LED_REG_VOUT_CNTL = 0x0A, + MAX77693_LED_REG_VOUT_FLASH1 = 0x0B, + MAX77693_LED_REG_VOUT_FLASH2 = 0x0C, + MAX77693_LED_REG_FLASH_INT = 0x0E, + MAX77693_LED_REG_FLASH_INT_MASK = 0x0F, + MAX77693_LED_REG_FLASH_INT_STATUS = 0x10, + + MAX77693_PMIC_REG_PMIC_ID1 = 0x20, + MAX77693_PMIC_REG_PMIC_ID2 = 0x21, + MAX77693_PMIC_REG_INTSRC = 0x22, + MAX77693_PMIC_REG_INTSRC_MASK = 0x23, + MAX77693_PMIC_REG_TOPSYS_INT = 0x24, + MAX77693_PMIC_REG_TOPSYS_INT_MASK = 0x26, + MAX77693_PMIC_REG_TOPSYS_STAT = 0x28, + MAX77693_PMIC_REG_MAINCTRL1 = 0x2A, + MAX77693_PMIC_REG_LSCNFG = 0x2B, + + MAX77693_CHG_REG_CHG_INT = 0xB0, + MAX77693_CHG_REG_CHG_INT_MASK = 0xB1, + MAX77693_CHG_REG_CHG_INT_OK = 0xB2, + MAX77693_CHG_REG_CHG_DETAILS_00 = 0xB3, + MAX77693_CHG_REG_CHG_DETAILS_01 = 0xB4, + MAX77693_CHG_REG_CHG_DETAILS_02 = 0xB5, + MAX77693_CHG_REG_CHG_DETAILS_03 = 0xB6, + MAX77693_CHG_REG_CHG_CNFG_00 = 0xB7, + MAX77693_CHG_REG_CHG_CNFG_01 = 0xB8, + MAX77693_CHG_REG_CHG_CNFG_02 = 0xB9, + MAX77693_CHG_REG_CHG_CNFG_03 = 0xBA, + MAX77693_CHG_REG_CHG_CNFG_04 = 0xBB, + MAX77693_CHG_REG_CHG_CNFG_05 = 0xBC, + MAX77693_CHG_REG_CHG_CNFG_06 = 0xBD, + MAX77693_CHG_REG_CHG_CNFG_07 = 0xBE, + MAX77693_CHG_REG_CHG_CNFG_08 = 0xBF, + MAX77693_CHG_REG_CHG_CNFG_09 = 0xC0, + MAX77693_CHG_REG_CHG_CNFG_10 = 0xC1, + MAX77693_CHG_REG_CHG_CNFG_11 = 0xC2, + MAX77693_CHG_REG_CHG_CNFG_12 = 0xC3, + MAX77693_CHG_REG_CHG_CNFG_13 = 0xC4, + MAX77693_CHG_REG_CHG_CNFG_14 = 0xC5, + MAX77693_CHG_REG_SAFEOUT_CTRL = 0xC6, + + MAX77693_PMIC_REG_END, +}; + +/* Slave addr = 0x4A: MUIC */ +enum max77693_muic_reg { + MAX77693_MUIC_REG_ID = 0x00, + MAX77693_MUIC_REG_INT1 = 0x01, + MAX77693_MUIC_REG_INT2 = 0x02, + MAX77693_MUIC_REG_INT3 = 0x03, + MAX77693_MUIC_REG_STATUS1 = 0x04, + MAX77693_MUIC_REG_STATUS2 = 0x05, + MAX77693_MUIC_REG_STATUS3 = 0x06, + MAX77693_MUIC_REG_INTMASK1 = 0x07, + MAX77693_MUIC_REG_INTMASK2 = 0x08, + MAX77693_MUIC_REG_INTMASK3 = 0x09, + MAX77693_MUIC_REG_CDETCTRL1 = 0x0A, + MAX77693_MUIC_REG_CDETCTRL2 = 0x0B, + MAX77693_MUIC_REG_CTRL1 = 0x0C, + MAX77693_MUIC_REG_CTRL2 = 0x0D, + MAX77693_MUIC_REG_CTRL3 = 0x0E, + + MAX77693_MUIC_REG_END, +}; + +/* Slave addr = 0x90: Haptic */ +enum max77693_haptic_reg { + MAX77693_HAPTIC_REG_STATUS = 0x00, + MAX77693_HAPTIC_REG_CONFIG1 = 0x01, + MAX77693_HAPTIC_REG_CONFIG2 = 0x02, + MAX77693_HAPTIC_REG_CONFIG_CHNL = 0x03, + MAX77693_HAPTIC_REG_CONFG_CYC1 = 0x04, + MAX77693_HAPTIC_REG_CONFG_CYC2 = 0x05, + MAX77693_HAPTIC_REG_CONFIG_PER1 = 0x06, + MAX77693_HAPTIC_REG_CONFIG_PER2 = 0x07, + MAX77693_HAPTIC_REG_CONFIG_PER3 = 0x08, + MAX77693_HAPTIC_REG_CONFIG_PER4 = 0x09, + MAX77693_HAPTIC_REG_CONFIG_DUTY1 = 0x0A, + MAX77693_HAPTIC_REG_CONFIG_DUTY2 = 0x0B, + MAX77693_HAPTIC_REG_CONFIG_PWM1 = 0x0C, + MAX77693_HAPTIC_REG_CONFIG_PWM2 = 0x0D, + MAX77693_HAPTIC_REG_CONFIG_PWM3 = 0x0E, + MAX77693_HAPTIC_REG_CONFIG_PWM4 = 0x0F, + MAX77693_HAPTIC_REG_REV = 0x10, + + MAX77693_HAPTIC_REG_END, +}; + +enum max77693_irq_source { + LED_INT = 0, + TOPSYS_INT, + CHG_INT, + MUIC_INT1, + MUIC_INT2, + MUIC_INT3, + + MAX77693_IRQ_GROUP_NR, +}; + +enum max77693_irq { + /* PMIC - FLASH */ + MAX77693_LED_IRQ_FLED2_OPEN, + MAX77693_LED_IRQ_FLED2_SHORT, + MAX77693_LED_IRQ_FLED1_OPEN, + MAX77693_LED_IRQ_FLED1_SHORT, + MAX77693_LED_IRQ_MAX_FLASH, + + /* PMIC - TOPSYS */ + MAX77693_TOPSYS_IRQ_T120C_INT, + MAX77693_TOPSYS_IRQ_T140C_INT, + MAX77693_TOPSYS_IRQ_LOWSYS_INT, + + /* PMIC - Charger */ + MAX77693_CHG_IRQ_BYP_I, + MAX77693_CHG_IRQ_THM_I, + MAX77693_CHG_IRQ_BAT_I, + MAX77693_CHG_IRQ_CHG_I, + MAX77693_CHG_IRQ_CHGIN_I, + + /* MUIC INT1 */ + MAX77693_MUIC_IRQ_INT1_ADC, + MAX77693_MUIC_IRQ_INT1_ADC_LOW, + MAX77693_MUIC_IRQ_INT1_ADC_ERR, + MAX77693_MUIC_IRQ_INT1_ADC1K, + + /* MUIC INT2 */ + MAX77693_MUIC_IRQ_INT2_CHGTYP, + MAX77693_MUIC_IRQ_INT2_CHGDETREUN, + MAX77693_MUIC_IRQ_INT2_DCDTMR, + MAX77693_MUIC_IRQ_INT2_DXOVP, + MAX77693_MUIC_IRQ_INT2_VBVOLT, + MAX77693_MUIC_IRQ_INT2_VIDRM, + + /* MUIC INT3 */ + MAX77693_MUIC_IRQ_INT3_EOC, + MAX77693_MUIC_IRQ_INT3_CGMBC, + MAX77693_MUIC_IRQ_INT3_OVP, + MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR, + MAX77693_MUIC_IRQ_INT3_CHG_ENABLED, + MAX77693_MUIC_IRQ_INT3_BAT_DET, + + MAX77693_IRQ_NR, +}; + +struct max77693_dev { + struct device *dev; + struct i2c_client *i2c; /* 0xCC / PMIC, Charger, Flash LED */ + struct i2c_client *muic; /* 0x4A / MUIC */ + struct i2c_client *haptic; /* 0x90 / Haptic */ + struct mutex iolock; + + int type; + + int irq; + bool wakeup; +}; + +enum max77693_types { + TYPE_MAX77693, +}; + +extern int max77693_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest); +extern int max77693_bulk_read(struct i2c_client *i2c, u8 reg, int count, + u8 *buf); +extern int max77693_write_reg(struct i2c_client *i2c, u8 reg, u8 value); +extern int max77693_bulk_write(struct i2c_client *i2c, u8 reg, int count, + u8 *buf); +extern int max77693_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask); + +#endif /* __LINUX_MFD_MAX77693_PRIV_H */ diff --git a/include/linux/mfd/max77693.h b/include/linux/mfd/max77693.h new file mode 100644 index 0000000..aba3f0f --- /dev/null +++ b/include/linux/mfd/max77693.h @@ -0,0 +1,37 @@ +/* + * max77693.h - Driver for the Maxim 77693 + * + * Copyright (C) 2011 Samsung Electrnoics + * SangYoung Son <hello.son@samsung.com> + * + * This program is not provided / owned by Maxim Integrated Products. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * This driver is based on max8997.h + * + * MAX77693 has PMIC, Charger, Flash LED, Haptic, MUIC devices. + * The devices share the same I2C bus and included in + * this mfd driver. + */ + +#ifndef __LINUX_MFD_MAX77693_H +#define __LINUX_MFD_MAX77693_H + +struct max77693_platform_data { + /* IRQ */ + int wakeup; +}; +#endif /* __LINUX_MFD_MAX77693_H */ -- 1.7.4.1
| |