regulator: tps65132: add regulator driver for TI TPS65132 (77c129bf) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/regulator/Kconfig

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	@@ -781,6 +781,14 @@ config REGULATOR_TPS65090
	This driver provides support for the voltage regulators on the		This driver provides support for the voltage regulators on the
	TI TPS65090 PMIC.		TI TPS65090 PMIC.

			config REGULATOR_TPS65132
			tristate "TI TPS65132 Dual Output Power regulators"
			depends on I2C && GPIOLIB
			select REGMAP_I2C
			help
			This driver supports TPS65132 single inductor - dual output
			power supply specifcally designed for display panels.

	config REGULATOR_TPS65217		config REGULATOR_TPS65217
	tristate "TI TPS65217 Power regulators"		tristate "TI TPS65217 Power regulators"
	depends on MFD_TPS65217		depends on MFD_TPS65217

drivers/regulator/Makefile

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	@@ -104,6 +104,7 @@ obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
	obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o		obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
	obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o		obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
	obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o		obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o
			obj-$(CONFIG_REGULATOR_TPS65132) += tps65132-regulator.o
	obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o twl6030-regulator.o		obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o twl6030-regulator.o
	obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress-regulator.o		obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress-regulator.o
	obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o		obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o

drivers/regulator/tps65132-regulator.c

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Original line number	Original line	Diff line number	Diff line
			/*
			* TI TPS65132 Regulator driver
			*
			* Copyright (C) 2017 NVIDIA CORPORATION. All rights reserved.
			*
			* Author: Venkat Reddy Talla <vreddytalla@nvidia.com>
			* Laxman Dewangan <ldewangan@nvidia.com>
			*
			* 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 "as is" WITHOUT ANY WARRANTY of any kind,
			* whether express or implied; without even the implied warranty of
			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
			* General Public License for more details.
			*/

			#include <linux/delay.h>
			#include <linux/err.h>
			#include <linux/gpio/consumer.h>
			#include <linux/i2c.h>
			#include <linux/module.h>
			#include <linux/regmap.h>
			#include <linux/regulator/driver.h>
			#include <linux/regulator/machine.h>

			#define TPS65132_REG_VPOS 0x00
			#define TPS65132_REG_VNEG 0x01
			#define TPS65132_REG_APPS_DISP_DISN 0x03
			#define TPS65132_REG_CONTROL 0x0FF

			#define TPS65132_VOUT_MASK 0x1F
			#define TPS65132_VOUT_N_VOLTAGE 0x15
			#define TPS65132_VOUT_VMIN 4000000
			#define TPS65132_VOUT_VMAX 6000000
			#define TPS65132_VOUT_STEP 100000

			#define TPS65132_REG_APPS_DIS_VPOS BIT(0)
			#define TPS65132_REG_APPS_DIS_VNEG BIT(1)

			#define TPS65132_REGULATOR_ID_VPOS 0
			#define TPS65132_REGULATOR_ID_VNEG 1
			#define TPS65132_MAX_REGULATORS 2

			#define TPS65132_ACT_DIS_TIME_SLACK 1000

			struct tps65132_reg_pdata {
			struct gpio_desc *en_gpiod;
			struct gpio_desc *act_dis_gpiod;
			unsigned int act_dis_time_us;
			int ena_gpio_state;
			};

			struct tps65132_regulator {
			struct device *dev;
			struct regmap *rmap;
			struct regulator_desc *rdesc[TPS65132_MAX_REGULATORS];
			struct tps65132_reg_pdata reg_pdata[TPS65132_MAX_REGULATORS];
			struct regulator_dev *rdev[TPS65132_MAX_REGULATORS];
			};

			static int tps65132_regulator_enable(struct regulator_dev *rdev)
			{
			struct tps65132_regulator *tps = rdev_get_drvdata(rdev);
			int id = rdev_get_id(rdev);
			struct tps65132_reg_pdata *rpdata = &tps->reg_pdata[id];
			int ret;

			if (!IS_ERR(rpdata->en_gpiod)) {
			gpiod_set_value_cansleep(rpdata->en_gpiod, 1);
			rpdata->ena_gpio_state = 1;
			}

			/* Hardware automatically enable discharge bit in enable */
			if (rdev->constraints->active_discharge ==
			REGULATOR_ACTIVE_DISCHARGE_DISABLE) {
			ret = regulator_set_active_discharge_regmap(rdev, false);
			if (ret < 0) {
			dev_err(tps->dev, "Failed to disable active discharge: %d\n",
			ret);
			return ret;
			}
			}

			return 0;
			}

			static int tps65132_regulator_disable(struct regulator_dev *rdev)
			{
			struct tps65132_regulator *tps = rdev_get_drvdata(rdev);
			int id = rdev_get_id(rdev);
			struct tps65132_reg_pdata *rpdata = &tps->reg_pdata[id];

			if (!IS_ERR(rpdata->en_gpiod)) {
			gpiod_set_value_cansleep(rpdata->en_gpiod, 0);
			rpdata->ena_gpio_state = 0;
			}

			if (!IS_ERR(rpdata->act_dis_gpiod)) {
			gpiod_set_value_cansleep(rpdata->act_dis_gpiod, 1);
			usleep_range(rpdata->act_dis_time_us, rpdata->act_dis_time_us +
			TPS65132_ACT_DIS_TIME_SLACK);
			gpiod_set_value_cansleep(rpdata->act_dis_gpiod, 0);
			}

			return 0;
			}

			static int tps65132_regulator_is_enabled(struct regulator_dev *rdev)
			{
			struct tps65132_regulator *tps = rdev_get_drvdata(rdev);
			int id = rdev_get_id(rdev);
			struct tps65132_reg_pdata *rpdata = &tps->reg_pdata[id];

			if (!IS_ERR(rpdata->en_gpiod))
			return rpdata->ena_gpio_state;

			return 1;
			}

			static struct regulator_ops tps65132_regulator_ops = {
			.enable = tps65132_regulator_enable,
			.disable = tps65132_regulator_disable,
			.is_enabled = tps65132_regulator_is_enabled,
			.list_voltage = regulator_list_voltage_linear,
			.map_voltage = regulator_map_voltage_linear,
			.get_voltage_sel = regulator_get_voltage_sel_regmap,
			.set_voltage_sel = regulator_set_voltage_sel_regmap,
			.set_active_discharge = regulator_set_active_discharge_regmap,
			};

			static int tps65132_of_parse_cb(struct device_node *np,
			const struct regulator_desc *desc,
			struct regulator_config *config)
			{
			struct tps65132_regulator *tps = config->driver_data;
			struct tps65132_reg_pdata *rpdata = &tps->reg_pdata[desc->id];
			int ret;

			rpdata->en_gpiod = devm_fwnode_get_index_gpiod_from_child(tps->dev,
			"enable", 0, &np->fwnode, 0, "enable");
			if (IS_ERR(rpdata->en_gpiod)) {
			ret = PTR_ERR(rpdata->en_gpiod);

			/* Ignore the error other than probe defer */
			if (ret == -EPROBE_DEFER)
			return ret;
			return 0;
			}

			rpdata->act_dis_gpiod = devm_fwnode_get_index_gpiod_from_child(
			tps->dev, "active-discharge", 0,
			&np->fwnode, 0, "active-discharge");
			if (IS_ERR(rpdata->act_dis_gpiod)) {
			ret = PTR_ERR(rpdata->act_dis_gpiod);

			/* Ignore the error other than probe defer */
			if (ret == -EPROBE_DEFER)
			return ret;

			return 0;
			}

			ret = of_property_read_u32(np, "ti,active-discharge-time-us",
			&rpdata->act_dis_time_us);
			if (ret < 0) {
			dev_err(tps->dev, "Failed to read active discharge time:%d\n",
			ret);
			return ret;
			}

			return 0;
			}

			#define TPS65132_REGULATOR_DESC(_id, _name) \
			[TPS65132_REGULATOR_ID_##_id] = { \
			.name = "tps65132-"#_name, \
			.supply_name = "vin", \
			.id = TPS65132_REGULATOR_ID_##_id, \
			.of_match = of_match_ptr(#_name), \
			.of_parse_cb = tps65132_of_parse_cb, \
			.ops = &tps65132_regulator_ops, \
			.n_voltages = TPS65132_VOUT_N_VOLTAGE, \
			.min_uV = TPS65132_VOUT_VMIN, \
			.uV_step = TPS65132_VOUT_STEP, \
			.enable_time = 500, \
			.vsel_mask = TPS65132_VOUT_MASK, \
			.vsel_reg = TPS65132_REG_##_id, \
			.active_discharge_off = 0, \
			.active_discharge_on = TPS65132_REG_APPS_DIS_##_id, \
			.active_discharge_mask = TPS65132_REG_APPS_DIS_##_id, \
			.active_discharge_reg = TPS65132_REG_APPS_DISP_DISN, \
			.type = REGULATOR_VOLTAGE, \
			.owner = THIS_MODULE, \
			}

			static struct regulator_desc tps_regs_desc[TPS65132_MAX_REGULATORS] = {
			TPS65132_REGULATOR_DESC(VPOS, outp),
			TPS65132_REGULATOR_DESC(VNEG, outn),
			};

			static const struct regmap_range tps65132_no_reg_ranges[] = {
			regmap_reg_range(TPS65132_REG_APPS_DISP_DISN + 1,
			TPS65132_REG_CONTROL - 1),
			};

			static const struct regmap_access_table tps65132_no_reg_table = {
			.no_ranges = tps65132_no_reg_ranges,
			.n_no_ranges = ARRAY_SIZE(tps65132_no_reg_ranges),
			};

			static const struct regmap_config tps65132_regmap_config = {
			.reg_bits = 8,
			.val_bits = 8,
			.max_register = TPS65132_REG_CONTROL + 1,
			.cache_type = REGCACHE_NONE,
			.rd_table = &tps65132_no_reg_table,
			.wr_table = &tps65132_no_reg_table,
			};

			static int tps65132_probe(struct i2c_client *client,
			const struct i2c_device_id *client_id)
			{
			struct device *dev = &client->dev;
			struct tps65132_regulator *tps;
			struct regulator_config config = { };
			int id;
			int ret;

			tps = devm_kzalloc(dev, sizeof(*tps), GFP_KERNEL);
			if (!tps)
			return -ENOMEM;

			tps->rmap = devm_regmap_init_i2c(client, &tps65132_regmap_config);
			if (IS_ERR(tps->rmap)) {
			ret = PTR_ERR(tps->rmap);
			dev_err(dev, "regmap init failed: %d\n", ret);
			return ret;
			}

			i2c_set_clientdata(client, tps);
			tps->dev = dev;

			for (id = 0; id < TPS65132_MAX_REGULATORS; ++id) {
			tps->rdesc[id] = &tps_regs_desc[id];

			config.regmap = tps->rmap;
			config.dev = dev;
			config.driver_data = tps;

			tps->rdev[id] = devm_regulator_register(dev,
			tps->rdesc[id], &config);
			if (IS_ERR(tps->rdev[id])) {
			ret = PTR_ERR(tps->rdev[id]);
			dev_err(dev, "regulator %s register failed: %d\n",
			tps->rdesc[id]->name, ret);
			return ret;
			}
			}
			return 0;
			}

			static const struct i2c_device_id tps65132_id[] = {
			{.name = "tps65132",},
			{},
			};
			MODULE_DEVICE_TABLE(i2c, tps65132_id);

			static struct i2c_driver tps65132_i2c_driver = {
			.driver = {
			.name = "tps65132",
			.owner = THIS_MODULE,
			},
			.probe = tps65132_probe,
			.id_table = tps65132_id,
			};

			module_i2c_driver(tps65132_i2c_driver);

			MODULE_DESCRIPTION("tps65132 regulator driver");
			MODULE_AUTHOR("Venkat Reddy Talla <vreddytalla@nvidia.com>");
			MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
			MODULE_LICENSE("GPL v2");