mfd: Add MAX77693 driver (83871c00) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/mfd/Kconfig

+12 −0

Original line number	Diff line number	Diff line
		@@ -420,6 +420,18 @@ config PMIC_ADP5520
		individual components like LCD backlight, LEDs, GPIOs and Kepad
		under the corresponding menus.

		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 MAX77693.
		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_MAX8925
		bool "Maxim Semiconductor MAX8925 PMIC Support"
		depends on I2C=y && GENERIC_HARDIRQS

drivers/mfd/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -78,6 +78,7 @@ obj-$(CONFIG_PMIC_DA9052) += da9052-core.o
		obj-$(CONFIG_MFD_DA9052_SPI) += da9052-spi.o
		obj-$(CONFIG_MFD_DA9052_I2C) += da9052-i2c.o

		obj-$(CONFIG_MFD_MAX77693) += max77693.o
		max8925-objs := max8925-core.o max8925-i2c.o
		obj-$(CONFIG_MFD_MAX8925) += max8925.o
		obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o

drivers/mfd/max77693.c

0 → 100644

+217 −0

Original line number	Diff line number	Diff line
		/*
		* max77693.c - mfd core driver for the MAX 77693
		*
		* Copyright (C) 2012 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/err.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>
		#include <linux/regmap.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 regmap map, u8 reg, u8 dest)
		{
		unsigned int val;
		int ret;

		ret = regmap_read(map, reg, &val);
		*dest = val;

		return ret;
		}
		EXPORT_SYMBOL_GPL(max77693_read_reg);

		int max77693_bulk_read(struct regmap map, u8 reg, int count, u8 buf)
		{
		int ret;

		ret = regmap_bulk_read(map, reg, buf, count);

		return ret;
		}
		EXPORT_SYMBOL_GPL(max77693_bulk_read);

		int max77693_write_reg(struct regmap *map, u8 reg, u8 value)
		{
		int ret;

		ret = regmap_write(map, reg, value);

		return ret;
		}
		EXPORT_SYMBOL_GPL(max77693_write_reg);

		int max77693_bulk_write(struct regmap map, u8 reg, int count, u8 buf)
		{
		int ret;

		ret = regmap_bulk_write(map, reg, buf, count);

		return ret;
		}
		EXPORT_SYMBOL_GPL(max77693_bulk_write);

		int max77693_update_reg(struct regmap *map, u8 reg, u8 val, u8 mask)
		{
		int ret;

		ret = regmap_update_bits(map, reg, mask, val);

		return ret;
		}
		EXPORT_SYMBOL_GPL(max77693_update_reg);

		static const struct regmap_config max77693_regmap_config = {
		.reg_bits = 8,
		.val_bits = 8,
		.max_register = MAX77693_PMIC_REG_END,
		};

		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;

		max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
		if (IS_ERR(max77693->regmap)) {
		ret = PTR_ERR(max77693->regmap);
		dev_err(max77693->dev,"failed to allocate register map: %d\n",
		ret);
		goto err_regmap;
		}

		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_regmap;

		max77693->wakeup = pdata->wakeup;

		mutex_init(&max77693->iolock);

		if (max77693_read_reg(max77693->regmap,
		MAX77693_PMIC_REG_PMIC_ID2, &reg_data) < 0) {
		dev_err(max77693->dev, "device not found on this channel\n");
		ret = -ENODEV;
		goto err_regmap;
		} 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_regmap:
		kfree(max77693);

		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");

include/linux/mfd/max77693-private.h

0 → 100644

+217 −0

Original line number	Diff line number	Diff line
		/*
		* max77693-private.h - Voltage regulator driver for the Maxim 77693
		*
		* Copyright (C) 2012 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;

		struct regmap *regmap;
		struct regmap *regmap_muic;
		struct regmap *regmap_haptic;

		int irq;
		bool wakeup;
		};

		enum max77693_types {
		TYPE_MAX77693,
		};

		extern int max77693_read_reg(struct regmap map, u8 reg, u8 dest);
		extern int max77693_bulk_read(struct regmap *map, u8 reg, int count,
		u8 *buf);
		extern int max77693_write_reg(struct regmap *map, u8 reg, u8 value);
		extern int max77693_bulk_write(struct regmap *map, u8 reg, int count,
		u8 *buf);
		extern int max77693_update_reg(struct regmap *map, u8 reg, u8 val, u8 mask);

		#endif /* __LINUX_MFD_MAX77693_PRIV_H */

include/linux/mfd/max77693.h

0 → 100644

+37 −0

Original line number	Diff line number	Diff line
		/*
		* max77693.h - Driver for the Maxim 77693
		*
		* Copyright (C) 2012 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 */