regulator: Add a subdriver for TI TPS6105x regulator portions v2 (2edd3b69) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/mfd/Kconfig

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		@@ -132,6 +132,8 @@ config UCB1400_CORE
		config TPS6105X
		tristate "TPS61050/61052 Boost Converters"
		depends on I2C
		select REGULATOR
		select REGULATOR_FIXED_VOLTAGE
		help
		This option enables a driver for the TP61050/TPS61052
		high-power "white LED driver". This boost converter is

drivers/regulator/Kconfig

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		@@ -223,6 +223,15 @@ config REGULATOR_AB3100
		AB3100 analog baseband dealing with power regulators
		for the system.

		config REGULATOR_TPS6105X
		tristate "TI TPS6105X Power regulators"
		depends on TPS6105X
		default y if TPS6105X
		help
		This driver supports TPS61050/TPS61052 voltage regulator chips.
		It is a single boost converter primarily for white LEDs and
		audio amplifiers.

		config REGULATOR_TPS65023
		tristate "TI TPS65023 Power regulators"
		depends on I2C

drivers/regulator/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -34,7 +34,7 @@ obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
		obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
		obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
		obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o

		obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o
		obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
		obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
		obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o

drivers/regulator/tps6105x-regulator.c

0 → 100644

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Original line number	Diff line number	Diff line
		/*
		* Driver for TPS61050/61052 boost converters, typically used for white LEDs
		* or audio amplifiers.
		*
		* Copyright (C) 2011 ST-Ericsson SA
		* Written on behalf of Linaro for ST-Ericsson
		*
		* Author: Linus Walleij <linus.walleij@linaro.org>
		*
		* License terms: GNU General Public License (GPL) version 2
		*/

		#include <linux/module.h>
		#include <linux/kernel.h>
		#include <linux/init.h>
		#include <linux/err.h>
		#include <linux/i2c.h>
		#include <linux/platform_device.h>
		#include <linux/regulator/driver.h>
		#include <linux/mfd/core.h>
		#include <linux/mfd/tps6105x.h>

		static const int tps6105x_voltages[] = {
		4500000,
		5000000,
		5250000,
		5000000, /* There is an additional 5V */
		};

		static int tps6105x_regulator_enable(struct regulator_dev *rdev)
		{
		struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
		int ret;

		/* Activate voltage mode */
		ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0,
		TPS6105X_REG0_MODE_MASK,
		TPS6105X_REG0_MODE_VOLTAGE << TPS6105X_REG0_MODE_SHIFT);
		if (ret)
		return ret;

		return 0;
		}

		static int tps6105x_regulator_disable(struct regulator_dev *rdev)
		{
		struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
		int ret;

		/* Set into shutdown mode */
		ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0,
		TPS6105X_REG0_MODE_MASK,
		TPS6105X_REG0_MODE_SHUTDOWN << TPS6105X_REG0_MODE_SHIFT);
		if (ret)
		return ret;

		return 0;
		}

		static int tps6105x_regulator_is_enabled(struct regulator_dev *rdev)
		{
		struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
		u8 regval;
		int ret;

		ret = tps6105x_get(tps6105x, TPS6105X_REG_0, &regval);
		if (ret)
		return ret;
		regval &= TPS6105X_REG0_MODE_MASK;
		regval >>= TPS6105X_REG0_MODE_SHIFT;

		if (regval == TPS6105X_REG0_MODE_VOLTAGE)
		return 1;

		return 0;
		}

		static int tps6105x_regulator_get_voltage_sel(struct regulator_dev *rdev)
		{
		struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
		u8 regval;
		int ret;

		ret = tps6105x_get(tps6105x, TPS6105X_REG_0, &regval);
		if (ret)
		return ret;

		regval &= TPS6105X_REG0_VOLTAGE_MASK;
		regval >>= TPS6105X_REG0_VOLTAGE_SHIFT;
		return (int) regval;
		}

		static int tps6105x_regulator_set_voltage_sel(struct regulator_dev *rdev,
		unsigned selector)
		{
		struct tps6105x *tps6105x = rdev_get_drvdata(rdev);
		int ret;

		ret = tps6105x_mask_and_set(tps6105x, TPS6105X_REG_0,
		TPS6105X_REG0_VOLTAGE_MASK,
		selector << TPS6105X_REG0_VOLTAGE_SHIFT);
		if (ret)
		return ret;

		return 0;
		}

		static int tps6105x_regulator_list_voltage(struct regulator_dev *rdev,
		unsigned selector)
		{
		if (selector >= ARRAY_SIZE(tps6105x_voltages))
		return -EINVAL;

		return tps6105x_voltages[selector];
		}

		static struct regulator_ops tps6105x_regulator_ops = {
		.enable = tps6105x_regulator_enable,
		.disable = tps6105x_regulator_disable,
		.is_enabled = tps6105x_regulator_is_enabled,
		.get_voltage_sel = tps6105x_regulator_get_voltage_sel,
		.set_voltage_sel = tps6105x_regulator_set_voltage_sel,
		.list_voltage = tps6105x_regulator_list_voltage,
		};

		static struct regulator_desc tps6105x_regulator_desc = {
		.name = "tps6105x-boost",
		.ops = &tps6105x_regulator_ops,
		.type = REGULATOR_VOLTAGE,
		.id = 0,
		.owner = THIS_MODULE,
		.n_voltages = ARRAY_SIZE(tps6105x_voltages),
		};

		/*
		* Registers the chip as a voltage regulator
		*/
		static int __devinit tps6105x_regulator_probe(struct platform_device *pdev)
		{
		struct tps6105x *tps6105x = mfd_get_data(pdev);
		struct tps6105x_platform_data *pdata = tps6105x->pdata;
		int ret;

		/* This instance is not set for regulator mode so bail out */
		if (pdata->mode != TPS6105X_MODE_VOLTAGE) {
		dev_info(&pdev->dev,
		"chip not in voltage mode mode, exit probe \n");
		return 0;
		}

		/* Register regulator with framework */
		tps6105x->regulator = regulator_register(&tps6105x_regulator_desc,
		&tps6105x->client->dev,
		pdata->regulator_data, tps6105x);
		if (IS_ERR(tps6105x->regulator)) {
		ret = PTR_ERR(tps6105x->regulator);
		dev_err(&tps6105x->client->dev,
		"failed to register regulator\n");
		return ret;
		}

		return 0;
		}

		static int __devexit tps6105x_regulator_remove(struct platform_device *pdev)
		{
		struct tps6105x *tps6105x = platform_get_drvdata(pdev);
		regulator_unregister(tps6105x->regulator);
		return 0;
		}

		static struct platform_driver tps6105x_regulator_driver = {
		.driver = {
		.name = "tps6105x-regulator",
		.owner = THIS_MODULE,
		},
		.probe = tps6105x_regulator_probe,
		.remove = __devexit_p(tps6105x_regulator_remove),
		};

		static __init int tps6105x_regulator_init(void)
		{
		return platform_driver_register(&tps6105x_regulator_driver);
		}
		subsys_initcall(tps6105x_regulator_init);

		static __exit void tps6105x_regulator_exit(void)
		{
		platform_driver_unregister(&tps6105x_regulator_driver);
		}
		module_exit(tps6105x_regulator_exit);

		MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
		MODULE_DESCRIPTION("TPS6105x regulator driver");
		MODULE_LICENSE("GPL v2");
		MODULE_ALIAS("platform:tps6105x-regulator");

include/linux/mfd/tps6105x.h

+6 −0

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		@@ -10,6 +10,7 @@
		#define MFD_TPS6105X_H

		#include <linux/i2c.h>
		#include <linux/regulator/machine.h>

		/*
		* Register definitions to all subdrivers
		@@ -71,20 +72,25 @@ enum tps6105x_mode {
		* struct tps6105x_platform_data - TPS61905x platform data
		* @mode: what mode this instance shall be operated in,
		* this is not selectable at runtime
		* @regulator_data: initialization data for the voltage
		* regulator if used as a voltage source
		*/
		struct tps6105x_platform_data {
		enum tps6105x_mode mode;
		struct regulator_init_data *regulator_data;
		};

		/**
		* struct tps6105x - state holder for the TPS6105x drivers
		* @mutex: mutex to serialize I2C accesses
		* @i2c_client: corresponding I2C client
		* @regulator: regulator device if used in voltage mode
		*/
		struct tps6105x {
		struct tps6105x_platform_data *pdata;
		struct mutex lock;
		struct i2c_client *client;
		struct regulator_dev *regulator;
		};

		extern int tps6105x_set(struct tps6105x *tps6105x, u8 reg, u8 value);