This patch adds support for TPS65917 PMIC regulators. The regulators set consists of 5 SMPSs and 5 LDOs. The output voltages are configurable and are meant to supply power to the main processor and other components. Signed-off-by: Keerthy <j-keerthy@xxxxxx> --- Comments fixed in V2: Used the standard functions in helpers.c Added a NULL entry in of_tps65917_match_tbl table. Used linear ranges instead of open coded function. drivers/regulator/Kconfig | 12 + drivers/regulator/Makefile | 1 + drivers/regulator/tps65917-regulator.c | 810 ++++++++++++++++++++++++++++++++ 3 files changed, 823 insertions(+) create mode 100644 drivers/regulator/tps65917-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 903eb37..6455a6e 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -581,6 +581,18 @@ config REGULATOR_TPS65912 help This driver supports TPS65912 voltage regulator chip. +config REGULATOR_TPS65917 + tristate "TI TPS65917 PMIC Regulators" + depends on MFD_TPS65917 + help + If you wish to control the regulators on the TPS65917 series of + chips say Y here. This will enable support for all the software + controllable SMPS/LDO regulators. + + The regulators available on TPS65917 series chips vary depending + on the muxing. This is handled automatically in the driver by + reading the mux info from OTP. + config REGULATOR_TPS80031 tristate "TI TPS80031/TPS80032 power regualtor driver" depends on MFD_TPS80031 diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 12ef277..115ee53 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o +obj-$(CONFIG_REGULATOR_TPS65917) += tps65917-regulator.o obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o diff --git a/drivers/regulator/tps65917-regulator.c b/drivers/regulator/tps65917-regulator.c new file mode 100644 index 0000000..929bd50 --- /dev/null +++ b/drivers/regulator/tps65917-regulator.c @@ -0,0 +1,810 @@ +/* + * Driver for Regulator part of TPS65917 PMIC + * + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether expressed or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License version 2 for more details. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/slab.h> +#include <linux/regmap.h> +#include <linux/mfd/tps65917.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/regulator/of_regulator.h> + +struct regs_info { + char *name; + char *sname; + u8 vsel_addr; + u8 ctrl_addr; + int sleep_id; +}; + +static const struct regulator_linear_range smps_low_ranges[] = { + REGULATOR_LINEAR_RANGE(500000, 0x1, 0x6, 0), + REGULATOR_LINEAR_RANGE(510000, 0x7, 0x79, 10000), + REGULATOR_LINEAR_RANGE(1650000, 0x7A, 0x7f, 0), +}; + +static const struct regulator_linear_range smps_high_ranges[] = { + REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x6, 0), + REGULATOR_LINEAR_RANGE(1020000, 0x7, 0x79, 20000), + REGULATOR_LINEAR_RANGE(3300000, 0x7A, 0x7f, 0), +}; + +static const struct regs_info tps65917_regs_info[] = { + { + .name = "SMPS1", + .sname = "smps1-in", + .vsel_addr = TPS65917_SMPS1_VOLTAGE, + .ctrl_addr = TPS65917_SMPS1_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS1, + }, + { + .name = "SMPS2", + .sname = "smps2-in", + .vsel_addr = TPS65917_SMPS2_VOLTAGE, + .ctrl_addr = TPS65917_SMPS2_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS2, + }, + { + .name = "SMPS3", + .sname = "smps3-in", + .vsel_addr = TPS65917_SMPS3_VOLTAGE, + .ctrl_addr = TPS65917_SMPS3_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS3, + }, + { + .name = "SMPS4", + .sname = "smps4-in", + .vsel_addr = TPS65917_SMPS4_VOLTAGE, + .ctrl_addr = TPS65917_SMPS4_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS4, + }, + { + .name = "SMPS5", + .sname = "smps5-in", + .vsel_addr = TPS65917_SMPS5_VOLTAGE, + .ctrl_addr = TPS65917_SMPS5_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS5, + }, + { + .name = "LDO1", + .sname = "ldo1-in", + .vsel_addr = TPS65917_LDO1_VOLTAGE, + .ctrl_addr = TPS65917_LDO1_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO1, + }, + { + .name = "LDO2", + .sname = "ldo2-in", + .vsel_addr = TPS65917_LDO2_VOLTAGE, + .ctrl_addr = TPS65917_LDO2_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO2, + }, + { + .name = "LDO3", + .sname = "ldo3-in", + .vsel_addr = TPS65917_LDO3_VOLTAGE, + .ctrl_addr = TPS65917_LDO3_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO3, + }, + { + .name = "LDO4", + .sname = "ldo4-in", + .vsel_addr = TPS65917_LDO4_VOLTAGE, + .ctrl_addr = TPS65917_LDO4_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO4, + }, + { + .name = "LDO5", + .sname = "ldo5-in", + .vsel_addr = TPS65917_LDO5_VOLTAGE, + .ctrl_addr = TPS65917_LDO5_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO5, + }, + { + .name = "REGEN1", + .ctrl_addr = TPS65917_REGEN1_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_REGEN1, + }, + { + .name = "REGEN2", + .ctrl_addr = TPS65917_REGEN2_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_REGEN2, + }, + { + .name = "REGEN3", + .ctrl_addr = TPS65917_REGEN3_CTRL, + .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_REGEN3, + }, +}; + +#define SMPS_CTRL_MODE_OFF 0x00 +#define SMPS_CTRL_MODE_ON 0x01 +#define SMPS_CTRL_MODE_ECO 0x02 +#define SMPS_CTRL_MODE_PWM 0x03 + +#define TPS65917_SMPS_NUM_VOLTAGES 122 +#define TPS65917_LDO_NUM_VOLTAGES 50 + +#define REGULATOR_SLAVE 0 + +static int tps65917_smps_read(struct tps65917 *tps65917, unsigned int reg, + unsigned int *dest) +{ + unsigned int addr; + + addr = TPS65917_BASE_TO_REG(TPS65917_SMPS_BASE, reg); + + return regmap_read(tps65917->regmap[REGULATOR_SLAVE], addr, dest); +} + +static int tps65917_smps_write(struct tps65917 *tps65917, unsigned int reg, + unsigned int value) +{ + unsigned int addr; + + addr = TPS65917_BASE_TO_REG(TPS65917_SMPS_BASE, reg); + + return regmap_write(tps65917->regmap[REGULATOR_SLAVE], addr, value); +} + +static int tps65917_ldo_read(struct tps65917 *tps65917, unsigned int reg, + unsigned int *dest) +{ + unsigned int addr; + + addr = TPS65917_BASE_TO_REG(TPS65917_LDO_BASE, reg); + + return regmap_read(tps65917->regmap[REGULATOR_SLAVE], addr, dest); +} + +static int tps65917_ldo_write(struct tps65917 *tps65917, unsigned int reg, + unsigned int value) +{ + unsigned int addr; + + addr = TPS65917_BASE_TO_REG(TPS65917_LDO_BASE, reg); + + return regmap_write(tps65917->regmap[REGULATOR_SLAVE], addr, value); +} + +static int tps65917_set_mode_smps(struct regulator_dev *dev, unsigned int mode) +{ + struct tps65917_pmic *pmic = rdev_get_drvdata(dev); + int id = rdev_get_id(dev); + unsigned int reg; + bool rail_enable = true; + + tps65917_smps_read(pmic->tps65917, tps65917_regs_info[id].ctrl_addr, + ®); + reg &= ~TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK; + + if (reg == SMPS_CTRL_MODE_OFF) + rail_enable = false; + + switch (mode) { + case REGULATOR_MODE_NORMAL: + reg |= SMPS_CTRL_MODE_ON; + break; + case REGULATOR_MODE_IDLE: + reg |= SMPS_CTRL_MODE_ECO; + break; + case REGULATOR_MODE_FAST: + reg |= SMPS_CTRL_MODE_PWM; + break; + default: + return -EINVAL; + } + + pmic->current_reg_mode[id] = reg & TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK; + if (rail_enable) + tps65917_smps_write(pmic->tps65917, + tps65917_regs_info[id].ctrl_addr, reg); + return 0; +} + +static unsigned int tps65917_get_mode_smps(struct regulator_dev *dev) +{ + struct tps65917_pmic *pmic = rdev_get_drvdata(dev); + int id = rdev_get_id(dev); + unsigned int reg; + + reg = pmic->current_reg_mode[id] & TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK; + + switch (reg) { + case SMPS_CTRL_MODE_ON: + return REGULATOR_MODE_NORMAL; + case SMPS_CTRL_MODE_ECO: + return REGULATOR_MODE_IDLE; + case SMPS_CTRL_MODE_PWM: + return REGULATOR_MODE_FAST; + } + + return 0; +} + +static struct regulator_ops tps65917_ops_smps = { + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .set_mode = tps65917_set_mode_smps, + .get_mode = tps65917_get_mode_smps, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, + .set_voltage_time_sel = regulator_set_voltage_time_sel, +}; + +static struct regulator_ops tps65917_ops_ext_control_smps = { + .set_mode = tps65917_set_mode_smps, + .get_mode = tps65917_get_mode_smps, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, +}; + +static struct regulator_ops tps65917_ops_ldo = { + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .set_voltage_time_sel = regulator_set_voltage_time_sel, +}; + +static struct regulator_ops tps65917_ops_ext_control_ldo = { + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, +}; + +static struct regulator_ops tps65917_ops_extreg = { + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, +}; + +static struct regulator_ops tps65917_ops_ext_control_extreg = { +}; + +static int tps65917_regulator_config_external(struct tps65917 *tps65917, int id, + struct tps65917_reg_init *reg_init) +{ + int sleep_id = tps65917_regs_info[id].sleep_id; + int ret; + + ret = tps65917_ext_control_req_config(tps65917, sleep_id, + reg_init->roof_floor, true); + if (ret < 0) + dev_err(tps65917->dev, + "Ext control config for regulator %d failed %d\n", + id, ret); + return ret; +} + +/* + * setup the hardware based sleep configuration of the SMPS/LDO regulators + * from the platform data. This is different to the software based control + * supported by the regulator framework as it is controlled by toggling + * pins on the PMIC such as PREQ, SYSEN, ... + */ +static int tps65917_smps_init(struct tps65917 *tps65917, int id, + struct tps65917_reg_init *reg_init) +{ + unsigned int reg; + unsigned int addr; + int ret; + + addr = tps65917_regs_info[id].ctrl_addr; + + ret = tps65917_smps_read(tps65917, addr, ®); + if (ret) + return ret; + + if (reg_init->warm_reset) + reg |= TPS65917_SMPS1_CTRL_WR_S; + else + reg &= ~TPS65917_SMPS1_CTRL_WR_S; + + if (reg_init->roof_floor) + reg |= TPS65917_SMPS1_CTRL_ROOF_FLOOR_EN; + else + reg &= ~TPS65917_SMPS1_CTRL_ROOF_FLOOR_EN; + + reg &= ~TPS65917_SMPS1_CTRL_MODE_SLEEP_MASK; + if (reg_init->mode_sleep) + reg |= reg_init->mode_sleep << + TPS65917_SMPS1_CTRL_MODE_SLEEP_SHIFT; + + + ret = tps65917_smps_write(tps65917, addr, reg); + if (ret) + return ret; + + if (tps65917_regs_info[id].vsel_addr && reg_init->vsel) { + addr = tps65917_regs_info[id].vsel_addr; + + reg = reg_init->vsel; + + ret = tps65917_smps_write(tps65917, addr, reg); + if (ret) + return ret; + } + + if (reg_init->roof_floor) { + /* Enable externally controlled regulator */ + addr = tps65917_regs_info[id].ctrl_addr; + ret = tps65917_smps_read(tps65917, addr, ®); + if (ret < 0) + return ret; + + if (!(reg & TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK)) { + reg |= SMPS_CTRL_MODE_ON; + ret = tps65917_smps_write(tps65917, addr, reg); + if (ret < 0) + return ret; + } + return tps65917_regulator_config_external(tps65917, id, + reg_init); + } + return 0; +} + +static int tps65917_ldo_init(struct tps65917 *tps65917, int id, + struct tps65917_reg_init *reg_init) +{ + unsigned int reg; + unsigned int addr; + int ret; + + addr = tps65917_regs_info[id].ctrl_addr; + + ret = tps65917_ldo_read(tps65917, addr, ®); + if (ret) + return ret; + + if (reg_init->warm_reset) + reg |= TPS65917_LDO1_CTRL_WR_S; + else + reg &= ~TPS65917_LDO1_CTRL_WR_S; + + if (reg_init->mode_sleep) + reg |= TPS65917_LDO1_CTRL_MODE_SLEEP; + else + reg &= ~TPS65917_LDO1_CTRL_MODE_SLEEP; + + ret = tps65917_ldo_write(tps65917, addr, reg); + if (ret) + return ret; + + if (reg_init->roof_floor) { + /* Enable externally controlled regulator */ + addr = tps65917_regs_info[id].ctrl_addr; + ret = tps65917_update_bits(tps65917, TPS65917_LDO_BASE, + addr, TPS65917_LDO1_CTRL_MODE_ACTIVE, + TPS65917_LDO1_CTRL_MODE_ACTIVE); + if (ret < 0) { + dev_err(tps65917->dev, + "LDO Register 0x%02x update failed %d\n", + addr, ret); + return ret; + } + return tps65917_regulator_config_external(tps65917, id, + reg_init); + } + return 0; +} + +static int tps65917_extreg_init(struct tps65917 *tps65917, int id, + struct tps65917_reg_init *reg_init) +{ + unsigned int addr; + int ret; + unsigned int val = 0; + + addr = tps65917_regs_info[id].ctrl_addr; + + if (reg_init->mode_sleep) + val = TPS65917_REGEN1_CTRL_MODE_SLEEP; + + ret = tps65917_update_bits(tps65917, TPS65917_RESOURCE_BASE, + addr, TPS65917_REGEN1_CTRL_MODE_SLEEP, val); + if (ret < 0) { + dev_err(tps65917->dev, "Resource reg 0x%02x update failed %d\n", + addr, ret); + return ret; + } + + if (reg_init->roof_floor) { + /* Enable externally controlled regulator */ + addr = tps65917_regs_info[id].ctrl_addr; + ret = tps65917_update_bits(tps65917, TPS65917_RESOURCE_BASE, + addr, TPS65917_REGEN1_CTRL_MODE_ACTIVE, + TPS65917_REGEN1_CTRL_MODE_ACTIVE); + if (ret < 0) { + dev_err(tps65917->dev, + "Resource Register 0x%02x update failed %d\n", + addr, ret); + return ret; + } + return tps65917_regulator_config_external(tps65917, id, + reg_init); + } + return 0; +} + +static struct of_regulator_match tps65917_matches[] = { + { .name = "smps1", }, + { .name = "smps2", }, + { .name = "smps3", }, + { .name = "smps4", }, + { .name = "smps5", }, + { .name = "ldo1", }, + { .name = "ldo2", }, + { .name = "ldo3", }, + { .name = "ldo4", }, + { .name = "ldo5", }, + { .name = "regen1", }, + { .name = "regen2", }, + { .name = "regen3", }, + { .name = "sysen1", }, + { .name = "sysen2", }, +}; + +static void tps65917_dt_to_pdata(struct device *dev, + struct device_node *node, + struct tps65917_pmic_platform_data *pdata) +{ + struct device_node *regulators; + u32 prop; + int idx, ret; + + node = of_node_get(node); + regulators = of_get_child_by_name(node, "regulators"); + if (!regulators) { + dev_info(dev, "regulator node not found\n"); + return; + } + + ret = of_regulator_match(dev, regulators, tps65917_matches, + TPS65917_NUM_REGS); + of_node_put(regulators); + if (ret < 0) { + dev_err(dev, "Error parsing regulator init data: %d\n", ret); + return; + } + + for (idx = 0; idx < TPS65917_NUM_REGS; idx++) { + if (!tps65917_matches[idx].init_data || + !tps65917_matches[idx].of_node) + continue; + + pdata->reg_data[idx] = tps65917_matches[idx].init_data; + + pdata->reg_init[idx] = devm_kzalloc(dev, + sizeof(struct tps65917_reg_init), GFP_KERNEL); + + pdata->reg_init[idx]->warm_reset = + of_property_read_bool(tps65917_matches[idx].of_node, + "ti,warm-reset"); + + ret = of_property_read_u32(tps65917_matches[idx].of_node, + "ti,roof-floor", &prop); + /* EINVAL: Property not found */ + if (ret != -EINVAL) { + int econtrol; + + /* use default value, when no value is specified */ + econtrol = TPS65917_EXT_CONTROL_NSLEEP; + if (!ret) { + switch (prop) { + case 1: + econtrol = TPS65917_EXT_CONTROL_ENABLE1; + break; + case 2: + econtrol = TPS65917_EXT_CONTROL_ENABLE2; + break; + case 3: + econtrol = TPS65917_EXT_CONTROL_NSLEEP; + break; + default: + WARN_ON(1); + dev_warn(dev, + "%s: Invalid roof-floor option: %u\n", + tps65917_matches[idx].name, prop); + break; + } + } + pdata->reg_init[idx]->roof_floor = econtrol; + } + + ret = of_property_read_u32(tps65917_matches[idx].of_node, + "ti,mode-sleep", &prop); + if (!ret) + pdata->reg_init[idx]->mode_sleep = prop; + + ret = of_property_read_bool(tps65917_matches[idx].of_node, + "ti,smps-range"); + if (ret) + pdata->reg_init[idx]->vsel = + TPS65917_SMPS1_VOLTAGE_RANGE; + } +} + + +static int tps65917_regulators_probe(struct platform_device *pdev) +{ + struct tps65917 *tps65917 = dev_get_drvdata(pdev->dev.parent); + struct tps65917_pmic_platform_data *pdata; + struct device_node *node = pdev->dev.of_node; + struct regulator_dev *rdev; + struct regulator_config config = { }; + struct tps65917_pmic *pmic; + struct tps65917_reg_init *reg_init; + int id = 0, ret; + unsigned int addr, reg; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + + if (!pdata) + return -ENOMEM; + + tps65917_dt_to_pdata(&pdev->dev, node, pdata); + + pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); + if (!pmic) + return -ENOMEM; + + pmic->dev = &pdev->dev; + pmic->tps65917 = tps65917; + tps65917->pmic = pmic; + platform_set_drvdata(pdev, pmic); + + ret = tps65917_smps_read(tps65917, TPS65917_SMPS_CTRL, ®); + if (ret) + return ret; + + if (reg & TPS65917_SMPS_CTRL_SMPS1_SMPS12_EN) + pmic->smps12 = 1; + + config.regmap = tps65917->regmap[REGULATOR_SLAVE]; + config.dev = &pdev->dev; + config.driver_data = pmic; + + for (id = 0; id < TPS65917_REG_LDO1; id++) { + /* + * Miss out regulators which are not available due + * to slaving configurations. + */ + if ((id == TPS65917_REG_SMPS2) && pmic->smps12) + continue; + + /* Initialise sleep/init values from platform data */ + if (pdata && pdata->reg_init[id]) { + reg_init = pdata->reg_init[id]; + ret = tps65917_smps_init(tps65917, id, reg_init); + if (ret) + return ret; + } else { + reg_init = NULL; + } + + /* Register the regulators */ + pmic->desc[id].name = tps65917_regs_info[id].name; + pmic->desc[id].id = id; + + /* + * Read and store the RANGE bit for later use + * This must be done before regulator is probed, + * otherwise we error in probe with unsupportable + * ranges. Read the current smps mode for later use. + */ + addr = tps65917_regs_info[id].vsel_addr; + + ret = tps65917_smps_read(pmic->tps65917, addr, ®); + if (ret) + return ret; + if (reg & TPS65917_SMPS1_VOLTAGE_RANGE) + pmic->range[id] = 1; + + if (reg_init && reg_init->roof_floor) + pmic->desc[id].ops = + &tps65917_ops_ext_control_smps; + else + pmic->desc[id].ops = &tps65917_ops_smps; + pmic->desc[id].n_voltages = TPS65917_SMPS_NUM_VOLTAGES; + pmic->desc[id].vsel_reg = + TPS65917_BASE_TO_REG(TPS65917_SMPS_BASE, + tps65917_regs_info[id].vsel_addr); + if (pmic->range[id]) + pmic->desc[id].linear_ranges = smps_high_ranges; + else + pmic->desc[id].linear_ranges = smps_low_ranges; + pmic->desc[id].vsel_mask = + TPS65917_SMPS1_VOLTAGE_VSEL_MASK; + + pmic->desc[id].n_linear_ranges = 3; + pmic->desc[id].ramp_delay = 2500; + + /* Read the smps mode for later use. */ + addr = tps65917_regs_info[id].ctrl_addr; + ret = tps65917_smps_read(pmic->tps65917, addr, ®); + if (ret) + return ret; + pmic->current_reg_mode[id] = reg & + TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK; + + pmic->desc[id].type = REGULATOR_VOLTAGE; + pmic->desc[id].owner = THIS_MODULE; + + if (pdata) + config.init_data = pdata->reg_data[id]; + else + config.init_data = NULL; + + pmic->desc[id].supply_name = tps65917_regs_info[id].sname; + config.of_node = tps65917_matches[id].of_node; + + rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id], + &config); + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, + "failed to register %s regulator\n", + pdev->name); + return PTR_ERR(rdev); + } + + /* Save regulator for cleanup */ + pmic->rdev[id] = rdev; + } + + /* Start this loop from the id left from previous loop */ + for (; id < TPS65917_NUM_REGS; id++) { + if (pdata && pdata->reg_init[id]) + reg_init = pdata->reg_init[id]; + else + reg_init = NULL; + + /* Miss out regulators which are not available due + * to alternate functions. + */ + + /* Register the regulators */ + pmic->desc[id].name = tps65917_regs_info[id].name; + pmic->desc[id].id = id; + pmic->desc[id].type = REGULATOR_VOLTAGE; + pmic->desc[id].owner = THIS_MODULE; + + if (id < TPS65917_REG_REGEN1) { + pmic->desc[id].n_voltages = TPS65917_LDO_NUM_VOLTAGES; + if (reg_init && reg_init->roof_floor) + pmic->desc[id].ops = + &tps65917_ops_ext_control_ldo; + else + pmic->desc[id].ops = &tps65917_ops_ldo; + pmic->desc[id].min_uV = 900000; + pmic->desc[id].uV_step = 50000; + pmic->desc[id].linear_min_sel = 1; + pmic->desc[id].enable_time = 500; + pmic->desc[id].vsel_reg = + TPS65917_BASE_TO_REG(TPS65917_LDO_BASE, + tps65917_regs_info[id].vsel_addr); + pmic->desc[id].vsel_mask = + TPS65917_LDO1_VOLTAGE_VSEL_MASK; + pmic->desc[id].enable_reg = + TPS65917_BASE_TO_REG(TPS65917_LDO_BASE, + tps65917_regs_info[id].ctrl_addr); + pmic->desc[id].enable_mask = + TPS65917_LDO1_CTRL_MODE_ACTIVE; + /* + * To be confirmed. Discussion on going with PMIC Team. + * It is of the order of ~60mV/uS. + */ + pmic->desc[id].ramp_delay = 2500; + } else { + pmic->desc[id].n_voltages = 1; + if (reg_init && reg_init->roof_floor) + pmic->desc[id].ops = + &tps65917_ops_ext_control_extreg; + else + pmic->desc[id].ops = &tps65917_ops_extreg; + pmic->desc[id].enable_reg = + TPS65917_BASE_TO_REG(TPS65917_RESOURCE_BASE, + tps65917_regs_info[id].ctrl_addr); + pmic->desc[id].enable_mask = + TPS65917_REGEN1_CTRL_MODE_ACTIVE; + } + + if (pdata) + config.init_data = pdata->reg_data[id]; + else + config.init_data = NULL; + + pmic->desc[id].supply_name = tps65917_regs_info[id].sname; + config.of_node = tps65917_matches[id].of_node; + + rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id], + &config); + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, + "failed to register %s regulator\n", + pdev->name); + return PTR_ERR(rdev); + } + + /* Save regulator for cleanup */ + pmic->rdev[id] = rdev; + + /* Initialise sleep/init values from platform data */ + if (pdata) { + reg_init = pdata->reg_init[id]; + if (reg_init) { + if (id < TPS65917_REG_REGEN1) + ret = tps65917_ldo_init(tps65917, + id, reg_init); + else + ret = tps65917_extreg_init(tps65917, + id, reg_init); + if (ret) + return ret; + } + } + } + + + return 0; +} + +static struct of_device_id of_tps65917_match_tbl[] = { + { .compatible = "ti,tps65917-pmic", }, + { } +}; + +static struct platform_driver tps65917_driver = { + .driver = { + .name = "tps65917-pmic", + .of_match_table = of_tps65917_match_tbl, + .owner = THIS_MODULE, + }, + .probe = tps65917_regulators_probe, +}; + +static int __init tps65917_init(void) +{ + return platform_driver_register(&tps65917_driver); +} +subsys_initcall(tps65917_init); + +static void __exit tps65917_exit(void) +{ + platform_driver_unregister(&tps65917_driver); +} +module_exit(tps65917_exit); + +MODULE_AUTHOR("J Keerthy <j-keerthy@xxxxxx>"); +MODULE_DESCRIPTION("TPS65917 voltage regulator driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:tps65917-pmic"); +MODULE_DEVICE_TABLE(of, of_tps65917_match_tbl); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
