diff options
| -rw-r--r-- | Documentation/devicetree/bindings/regulator/88pm800.txt | 38 | ||||
| -rw-r--r-- | drivers/regulator/88pm800.c | 383 | ||||
| -rw-r--r-- | drivers/regulator/Kconfig | 254 | ||||
| -rw-r--r-- | drivers/regulator/Makefile | 3 | ||||
| -rw-r--r-- | drivers/regulator/core.c | 95 | ||||
| -rw-r--r-- | drivers/regulator/wm831x-ldo.c | 104 | ||||
| -rw-r--r-- | drivers/regulator/wm8350-regulator.c | 55 | ||||
| -rw-r--r-- | drivers/regulator/wm8400-regulator.c | 50 | ||||
| -rw-r--r-- | include/linux/regulator/driver.h | 25 |
9 files changed, 732 insertions, 275 deletions
diff --git a/Documentation/devicetree/bindings/regulator/88pm800.txt b/Documentation/devicetree/bindings/regulator/88pm800.txt new file mode 100644 index 0000000..e8a54c2 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/88pm800.txt @@ -0,0 +1,38 @@ +Marvell 88PM800 regulator + +Required properties: +- compatible: "marvell,88pm800" +- reg: I2C slave address +- regulators: A node that houses a sub-node for each regulator within the + device. Each sub-node is identified using the node's name (or the deprecated + regulator-compatible property if present), with valid values listed below. + The content of each sub-node is defined by the standard binding for + regulators; see regulator.txt. + +The valid names for regulators are: + + buck1, buck2, buck3, buck4, buck5, ldo1, ldo2, ldo3, ldo4, ldo5, ldo6, ldo7, + ldo8, ldo9, ldo10, ldo11, ldo12, ldo13, ldo14, ldo15, ldo16, ldo17, ldo18, ldo19 + +Example: + + pmic: 88pm800@31 { + compatible = "marvell,88pm800"; + reg = <0x31>; + + regulators { + buck1 { + regulator-min-microvolt = <600000>; + regulator-max-microvolt = <3950000>; + regulator-boot-on; + regulator-always-on; + }; + ldo1 { + regulator-min-microvolt = <600000>; + regulator-max-microvolt = <15000000>; + regulator-boot-on; + regulator-always-on; + }; +... + }; + }; diff --git a/drivers/regulator/88pm800.c b/drivers/regulator/88pm800.c new file mode 100644 index 0000000..b30f5ce --- /dev/null +++ b/drivers/regulator/88pm800.c @@ -0,0 +1,383 @@ +/* + * Regulators driver for Marvell 88PM800 + * + * Copyright (C) 2012 Marvell International Ltd. + * Joseph(Yossi) Hanin <yhanin@marvell.com> + * Yi Zhang <yizhang@marvell.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. + */ +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/mfd/88pm80x.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/regulator/of_regulator.h> + +/* LDO1 with DVC[0..3] */ +#define PM800_LDO1_VOUT (0x08) /* VOUT1 */ +#define PM800_LDO1_VOUT_2 (0x09) +#define PM800_LDO1_VOUT_3 (0x0A) +#define PM800_LDO2_VOUT (0x0B) +#define PM800_LDO3_VOUT (0x0C) +#define PM800_LDO4_VOUT (0x0D) +#define PM800_LDO5_VOUT (0x0E) +#define PM800_LDO6_VOUT (0x0F) +#define PM800_LDO7_VOUT (0x10) +#define PM800_LDO8_VOUT (0x11) +#define PM800_LDO9_VOUT (0x12) +#define PM800_LDO10_VOUT (0x13) +#define PM800_LDO11_VOUT (0x14) +#define PM800_LDO12_VOUT (0x15) +#define PM800_LDO13_VOUT (0x16) +#define PM800_LDO14_VOUT (0x17) +#define PM800_LDO15_VOUT (0x18) +#define PM800_LDO16_VOUT (0x19) +#define PM800_LDO17_VOUT (0x1A) +#define PM800_LDO18_VOUT (0x1B) +#define PM800_LDO19_VOUT (0x1C) + +/* BUCK1 with DVC[0..3] */ +#define PM800_BUCK1 (0x3C) +#define PM800_BUCK1_1 (0x3D) +#define PM800_BUCK1_2 (0x3E) +#define PM800_BUCK1_3 (0x3F) +#define PM800_BUCK2 (0x40) +#define PM800_BUCK3 (0x41) +#define PM800_BUCK3 (0x41) +#define PM800_BUCK4 (0x42) +#define PM800_BUCK4_1 (0x43) +#define PM800_BUCK4_2 (0x44) +#define PM800_BUCK4_3 (0x45) +#define PM800_BUCK5 (0x46) + +#define PM800_BUCK_ENA (0x50) +#define PM800_LDO_ENA1_1 (0x51) +#define PM800_LDO_ENA1_2 (0x52) +#define PM800_LDO_ENA1_3 (0x53) + +#define PM800_LDO_ENA2_1 (0x56) +#define PM800_LDO_ENA2_2 (0x57) +#define PM800_LDO_ENA2_3 (0x58) + +#define PM800_BUCK1_MISC1 (0x78) +#define PM800_BUCK3_MISC1 (0x7E) +#define PM800_BUCK4_MISC1 (0x81) +#define PM800_BUCK5_MISC1 (0x84) + +struct pm800_regulator_info { + struct regulator_desc desc; + int max_ua; +}; + +struct pm800_regulators { + struct regulator_dev *regulators[PM800_ID_RG_MAX]; + struct pm80x_chip *chip; + struct regmap *map; +}; + +/* + * vreg - the buck regs string. + * ereg - the string for the enable register. + * ebit - the bit number in the enable register. + * amax - the current + * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges, + * not the constant voltage table. + * n_volt - Number of available selectors + */ +#define PM800_BUCK(vreg, ereg, ebit, amax, volt_ranges, n_volt) \ +{ \ + .desc = { \ + .name = #vreg, \ + .ops = &pm800_volt_range_ops, \ + .type = REGULATOR_VOLTAGE, \ + .id = PM800_ID_##vreg, \ + .owner = THIS_MODULE, \ + .n_voltages = n_volt, \ + .linear_ranges = volt_ranges, \ + .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ + .vsel_reg = PM800_##vreg, \ + .vsel_mask = 0x7f, \ + .enable_reg = PM800_##ereg, \ + .enable_mask = 1 << (ebit), \ + }, \ + .max_ua = (amax), \ +} + +/* + * vreg - the LDO regs string + * ereg - the string for the enable register. + * ebit - the bit number in the enable register. + * amax - the current + * volt_table - the LDO voltage table + * For all the LDOes, there are too many ranges. Using volt_table will be + * simpler and faster. + */ +#define PM800_LDO(vreg, ereg, ebit, amax, ldo_volt_table) \ +{ \ + .desc = { \ + .name = #vreg, \ + .ops = &pm800_volt_table_ops, \ + .type = REGULATOR_VOLTAGE, \ + .id = PM800_ID_##vreg, \ + .owner = THIS_MODULE, \ + .n_voltages = ARRAY_SIZE(ldo_volt_table), \ + .vsel_reg = PM800_##vreg##_VOUT, \ + .vsel_mask = 0x1f, \ + .enable_reg = PM800_##ereg, \ + .enable_mask = 1 << (ebit), \ + .volt_table = ldo_volt_table, \ + }, \ + .max_ua = (amax), \ +} + +/* Ranges are sorted in ascending order. */ +static const struct regulator_linear_range buck1_volt_range[] = { + { .min_uV = 600000, .max_uV = 1587500, .min_sel = 0, .max_sel = 0x4f, + .uV_step = 12500 }, + { .min_uV = 1600000, .max_uV = 1800000, .min_sel = 0x50, + .max_sel = 0x54, .uV_step = 50000 }, +}; + +/* BUCK 2~5 have same ranges. */ +static const struct regulator_linear_range buck2_5_volt_range[] = { + { .min_uV = 600000, .max_uV = 1587500, .min_sel = 0, .max_sel = 0x4f, + .uV_step = 12500 }, + { .min_uV = 1600000, .max_uV = 3300000, .min_sel = 0x50, + .max_sel = 0x72, .uV_step = 50000 }, +}; + +static const unsigned int ldo1_volt_table[] = { + 600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000, + 1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000, +}; + +static const unsigned int ldo2_volt_table[] = { + 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000, +}; + +/* LDO 3~17 have same voltage table. */ +static const unsigned int ldo3_17_volt_table[] = { + 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000, + 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, +}; + +/* LDO 18~19 have same voltage table. */ +static const unsigned int ldo18_19_volt_table[] = { + 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000, +}; + +static int pm800_get_current_limit(struct regulator_dev *rdev) +{ + struct pm800_regulator_info *info = rdev_get_drvdata(rdev); + + return info->max_ua; +} + +static struct regulator_ops pm800_volt_range_ops = { + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .get_current_limit = pm800_get_current_limit, +}; + +static struct regulator_ops pm800_volt_table_ops = { + .list_voltage = regulator_list_voltage_table, + .map_voltage = regulator_map_voltage_iterate, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .get_current_limit = pm800_get_current_limit, +}; + +/* The array is indexed by id(PM800_ID_XXX) */ +static struct pm800_regulator_info pm800_regulator_info[] = { + PM800_BUCK(BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range, 0x55), + PM800_BUCK(BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range, 0x73), + PM800_BUCK(BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range, 0x73), + PM800_BUCK(BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range, 0x73), + PM800_BUCK(BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range, 0x73), + + PM800_LDO(LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table), + PM800_LDO(LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table), + PM800_LDO(LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table), + PM800_LDO(LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table), + PM800_LDO(LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table), + PM800_LDO(LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table), + PM800_LDO(LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table), + PM800_LDO(LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table), + PM800_LDO(LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table), + PM800_LDO(LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table), + PM800_LDO(LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table), + PM800_LDO(LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table), + PM800_LDO(LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table), + PM800_LDO(LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table), + PM800_LDO(LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table), + PM800_LDO(LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table), + PM800_LDO(LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table), + PM800_LDO(LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table), + PM800_LDO(LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table), +}; + +#define PM800_REGULATOR_OF_MATCH(_name, _id) \ + [PM800_ID_##_id] = { \ + .name = #_name, \ + .driver_data = &pm800_regulator_info[PM800_ID_##_id], \ + } + +static struct of_regulator_match pm800_regulator_matches[] = { + PM800_REGULATOR_OF_MATCH(buck1, BUCK1), + PM800_REGULATOR_OF_MATCH(buck2, BUCK2), + PM800_REGULATOR_OF_MATCH(buck3, BUCK3), + PM800_REGULATOR_OF_MATCH(buck4, BUCK4), + PM800_REGULATOR_OF_MATCH(buck5, BUCK5), + PM800_REGULATOR_OF_MATCH(ldo1, LDO1), + PM800_REGULATOR_OF_MATCH(ldo2, LDO2), + PM800_REGULATOR_OF_MATCH(ldo3, LDO3), + PM800_REGULATOR_OF_MATCH(ldo4, LDO4), + PM800_REGULATOR_OF_MATCH(ldo5, LDO5), + PM800_REGULATOR_OF_MATCH(ldo6, LDO6), + PM800_REGULATOR_OF_MATCH(ldo7, LDO7), + PM800_REGULATOR_OF_MATCH(ldo8, LDO8), + PM800_REGULATOR_OF_MATCH(ldo9, LDO9), + PM800_REGULATOR_OF_MATCH(ldo10, LDO10), + PM800_REGULATOR_OF_MATCH(ldo11, LDO11), + PM800_REGULATOR_OF_MATCH(ldo12, LDO12), + PM800_REGULATOR_OF_MATCH(ldo13, LDO13), + PM800_REGULATOR_OF_MATCH(ldo14, LDO14), + PM800_REGULATOR_OF_MATCH(ldo15, LDO15), + PM800_REGULATOR_OF_MATCH(ldo16, LDO16), + PM800_REGULATOR_OF_MATCH(ldo17, LDO17), + PM800_REGULATOR_OF_MATCH(ldo18, LDO18), + PM800_REGULATOR_OF_MATCH(ldo19, LDO19), +}; + +static int pm800_regulator_dt_init(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + int ret; + + ret = of_regulator_match(&pdev->dev, np, + pm800_regulator_matches, + ARRAY_SIZE(pm800_regulator_matches)); + if (ret < 0) + return ret; + + return 0; +} + +static int pm800_regulator_probe(struct platform_device *pdev) +{ + struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); + struct pm80x_platform_data *pdata = pdev->dev.parent->platform_data; + struct pm800_regulators *pm800_data; + struct pm800_regulator_info *info; + struct regulator_config config = { }; + struct regulator_init_data *init_data; + int i, ret; + + if (!pdata || pdata->num_regulators == 0) { + if (IS_ENABLED(CONFIG_OF)) { + ret = pm800_regulator_dt_init(pdev); + if (ret) + return ret; + } else { + return -ENODEV; + } + } else if (pdata->num_regulators) { + unsigned int count = 0; + + /* Check whether num_regulator is valid. */ + for (i = 0; i < ARRAY_SIZE(pdata->regulators); i++) { + if (pdata->regulators[i]) + count++; + } + if (count != pdata->num_regulators) + return -EINVAL; + } else { + return -EINVAL; + } + + pm800_data = devm_kzalloc(&pdev->dev, sizeof(*pm800_data), + GFP_KERNEL); + if (!pm800_data) { + dev_err(&pdev->dev, "Failed to allocate pm800_regualtors"); + return -ENOMEM; + } + + pm800_data->map = chip->subchip->regmap_power; + pm800_data->chip = chip; + + platform_set_drvdata(pdev, pm800_data); + + for (i = 0; i < PM800_ID_RG_MAX; i++) { + if (!pdata || pdata->num_regulators == 0) + init_data = pm800_regulator_matches[i].init_data; + else + init_data = pdata->regulators[i]; + if (!init_data) + continue; + info = pm800_regulator_matches[i].driver_data; + config.dev = &pdev->dev; + config.init_data = init_data; + config.driver_data = info; + config.regmap = pm800_data->map; + config.of_node = pm800_regulator_matches[i].of_node; + + pm800_data->regulators[i] = + regulator_register(&info->desc, &config); + if (IS_ERR(pm800_data->regulators[i])) { + ret = PTR_ERR(pm800_data->regulators[i]); + dev_err(&pdev->dev, "Failed to register %s\n", + info->desc.name); + + while (--i >= 0) + regulator_unregister(pm800_data->regulators[i]); + + return ret; + } + } + + return 0; +} + +static int pm800_regulator_remove(struct platform_device *pdev) +{ + struct pm800_regulators *pm800_data = platform_get_drvdata(pdev); + int i; + + for (i = 0; i < PM800_ID_RG_MAX; i++) + regulator_unregister(pm800_data->regulators[i]); + + return 0; +} + +static struct platform_driver pm800_regulator_driver = { + .driver = { + .name = "88pm80x-regulator", + .owner = THIS_MODULE, + }, + .probe = pm800_regulator_probe, + .remove = pm800_regulator_remove, +}; + +module_platform_driver(pm800_regulator_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>"); +MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC"); +MODULE_ALIAS("platform:88pm800-regulator"); diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index f1e6ad9..b05fa90 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -64,15 +64,21 @@ config REGULATOR_USERSPACE_CONSUMER If unsure, say no. -config REGULATOR_GPIO - tristate "GPIO regulator support" - depends on GPIOLIB +config REGULATOR_88PM800 + tristate "Marvell 88PM800 Power regulators" + depends on MFD_88PM800 help - This driver provides support for regulators that can be - controlled via gpios. - It is capable of supporting current and voltage regulators - and the platform has to provide a mapping of GPIO-states - to target volts/amps. + This driver supports Marvell 88PM800 voltage regulator chips. + It delivers digitally programmable output, + the voltage is programmed via I2C interface. + It's suitable to support PXA988 chips to control VCC_MAIN and + various voltages. + +config REGULATOR_88PM8607 + bool "Marvell 88PM8607 Power regulators" + depends on MFD_88PM860X=y + help + This driver supports 88PM8607 voltage regulator chips. config REGULATOR_AD5398 tristate "Analog Devices AD5398/AD5821 regulators" @@ -81,6 +87,14 @@ config REGULATOR_AD5398 This driver supports AD5398 and AD5821 current regulator chips. If building into module, its name is ad5398.ko. +config REGULATOR_ANATOP + tristate "Freescale i.MX on-chip ANATOP LDO regulators" + depends on MFD_SYSCON + help + Say y here to support Freescale i.MX on-chip ANATOP LDOs + regulators. It is recommended that this option be + enabled on i.MX6 platform. + config REGULATOR_AAT2870 tristate "AnalogicTech AAT2870 Regulators" depends on MFD_AAT2870_CORE @@ -88,6 +102,22 @@ config REGULATOR_AAT2870 If you have a AnalogicTech AAT2870 say Y to enable the regulator driver. +config REGULATOR_AB3100 + tristate "ST-Ericsson AB3100 Regulator functions" + depends on AB3100_CORE + default y if AB3100_CORE + help + These regulators correspond to functionality in the + AB3100 analog baseband dealing with power regulators + for the system. + +config REGULATOR_AB8500 + bool "ST-Ericsson AB8500 Power Regulators" + depends on AB8500_CORE + help + This driver supports the regulators found on the ST-Ericsson mixed + signal AB8500 PMIC + config REGULATOR_ARIZONA tristate "Wolfson Arizona class devices" depends on MFD_ARIZONA @@ -96,6 +126,13 @@ config REGULATOR_ARIZONA Support for the regulators found on Wolfson Arizona class devices. +config REGULATOR_AS3711 + tristate "AS3711 PMIC" + depends on MFD_AS3711 + help + This driver provides support for the voltage regulators on the + AS3711 PMIC + config REGULATOR_DA903X tristate "Dialog Semiconductor DA9030/DA9034 regulators" depends on PMIC_DA903X @@ -120,6 +157,17 @@ config REGULATOR_DA9055 This driver can also be built as a module. If so, the module will be called da9055-regulator. +config REGULATOR_DBX500_PRCMU + bool + +config REGULATOR_DB8500_PRCMU + bool "ST-Ericsson DB8500 Voltage Domain Regulators" + depends on MFD_DB8500_PRCMU + select REGULATOR_DBX500_PRCMU + help + This driver supports the voltage domain regulators controlled by the + DB8500 PRCMU + config REGULATOR_FAN53555 tristate "Fairchild FAN53555 Regulator" depends on I2C @@ -131,44 +179,57 @@ config REGULATOR_FAN53555 input voltage supply of 2.5V to 5.5V. The output voltage is programmed through an I2C interface. -config REGULATOR_ANATOP - tristate "Freescale i.MX on-chip ANATOP LDO regulators" - depends on MFD_SYSCON +config REGULATOR_GPIO + tristate "GPIO regulator support" + depends on GPIOLIB help - Say y here to support Freescale i.MX on-chip ANATOP LDOs - regulators. It is recommended that this option be - enabled on i.MX6 platform. + This driver provides support for regulators that can be + controlled via gpios. + It is capable of supporting current and voltage regulators + and the platform has to provide a mapping of GPIO-states + to target volts/amps. -config REGULATOR_MC13XXX_CORE - tristate +config REGULATOR_ISL6271A + tristate "Intersil ISL6271A Power regulator" + depends on I2C + help + This driver supports ISL6271A voltage regulator chip. -config REGULATOR_MC13783 - tristate "Freescale MC13783 regulator driver" - depends on MFD_MC13783 - select REGULATOR_MC13XXX_CORE +config REGULATOR_LP3971 + tristate "National Semiconductors LP3971 PMIC regulator driver" + depends on I2C help - Say y here to support the regulators found on the Freescale MC13783 - PMIC. + Say Y here to support the voltage regulators and convertors + on National Semiconductors LP3971 PMIC -config REGULATOR_MC13892 - tristate "Freescale MC13892 regulator driver" - depends on MFD_MC13XXX - select REGULATOR_MC13XXX_CORE +config REGULATOR_LP3972 + tristate "National Semiconductors LP3972 PMIC regulator driver" + depends on I2C help - Say y here to support the regulators found on the Freescale MC13892 - PMIC. + Say Y here to support the voltage regulators and convertors + on National Semiconductors LP3972 PMIC -config REGULATOR_ISL6271A - tristate "Intersil ISL6271A Power regulator" +config REGULATOR_LP872X + bool "TI/National Semiconductor LP8720/LP8725 voltage regulators" + depends on I2C=y + select REGMAP_I2C + help + This driver supports LP8720/LP8725 PMIC + +config REGULATOR_LP8755 + tristate "TI LP8755 High Performance PMU driver" depends on I2C + select REGMAP_I2C help - This driver supports ISL6271A voltage regulator chip. + This driver supports LP8755 High Performance PMU driver. This + chip contains six step-down DC/DC converters which can support + 9 mode multiphase configuration. -config REGULATOR_88PM8607 - bool "Marvell 88PM8607 Power regulators" - depends on MFD_88PM860X=y +config REGULATOR_LP8788 + bool "TI LP8788 Power Regulators" + depends on MFD_LP8788 help - This driver supports 88PM8607 voltage regulator chips. + This driver supports LP8788 voltage regulator chip. config REGULATOR_MAX1586 tristate "Maxim 1586/1587 voltage regulator" @@ -259,48 +320,43 @@ config REGULATOR_MAX77693 and one current regulator 'CHARGER'. This is suitable for Exynos-4x12 chips. -config REGULATOR_PCAP - tristate "Motorola PCAP2 regulator driver" - depends on EZX_PCAP - help - This driver provides support for the voltage regulators of the - PCAP2 PMIC. +config REGULATOR_MC13XXX_CORE + tristate -config REGULATOR_LP3971 - tristate "National Semiconductors LP3971 PMIC regulator driver" - depends on I2C +config REGULATOR_MC13783 + tristate "Freescale MC13783 regulator driver" + depends on MFD_MC13783 + select REGULATOR_MC13XXX_CORE help - Say Y here to support the voltage regulators and convertors - on National Semiconductors LP3971 PMIC + Say y here to support the regulators found on the Freescale MC13783 + PMIC. -config REGULATOR_LP3972 - tristate "National Semiconductors LP3972 PMIC regulator driver" - depends on I2C +config REGULATOR_MC13892 + tristate "Freescale MC13892 regulator driver" + depends on MFD_MC13XXX + select REGULATOR_MC13XXX_CORE help - Say Y here to support the voltage regulators and convertors - on National Semiconductors LP3972 PMIC + Say y here to support the regulators found on the Freescale MC13892 + PMIC. -config REGULATOR_LP872X - bool "TI/National Semiconductor LP8720/LP8725 voltage regulators" - depends on I2C=y - select REGMAP_I2C +config REGULATOR_PALMAS + tristate "TI Palmas PMIC Regulators" + depends on MFD_PALMAS help - This driver supports LP8720/LP8725 PMIC + If you wish to control the regulators on the Palmas series of + chips say Y here. This will enable support for all the software + controllable SMPS/LDO regulators. -config REGULATOR_LP8755 - tristate "TI LP8755 High Performance PMU driver" - depends on I2C - select REGMAP_I2C - help - This driver supports LP8755 High Performance PMU driver. This - chip contains six step-down DC/DC converters which can support - 9 mode multiphase configuration. + The regulators available on Palmas series chips vary depending + on the muxing. This is handled automatically in the driver by + reading the mux info from OTP. -config REGULATOR_LP8788 - bool "TI LP8788 Power Regulators" - depends on MFD_LP8788 +config REGULATOR_PCAP + tristate "Motorola PCAP2 regulator driver" + depends on EZX_PCAP help - This driver supports LP8788 voltage regulator chip. + This driver provides support for the voltage regulators of the + PCAP2 PMIC. config REGULATOR_PCF50633 tristate "NXP PCF50633 regulator driver" @@ -335,44 +391,15 @@ config REGULATOR_S5M8767 via I2C bus. S5M8767A have 9 Bucks and 28 LDOs output and supports DVS mode with 8bits of output voltage control. -config REGULATOR_AB3100 - tristate "ST-Ericsson AB3100 Regulator functions" - depends on AB3100_CORE - default y if AB3100_CORE - help - These regulators correspond to functionality in the - AB3100 analog baseband dealing with power regulators - for the system. - -config REGULATOR_AB8500 - bool "ST-Ericsson AB8500 Power Regulators" - depends on AB8500_CORE - help - This driver supports the regulators found on the ST-Ericsson mixed - signal AB8500 PMIC - -config REGULATOR_DBX500_PRCMU - bool - -config REGULATOR_DB8500_PRCMU - bool "ST-Ericsson DB8500 Voltage Domain Regulators" - depends on MFD_DB8500_PRCMU - select REGULATOR_DBX500_PRCMU - help - This driver supports the voltage domain regulators controlled by the - DB8500 PRCMU - -config REGULATOR_PALMAS - tristate "TI Palmas PMIC Regulators" - depends on MFD_PALMAS +config REGULATOR_TI_ABB + bool "TI Adaptive Body Bias on-chip LDO" + depends on ARCH_OMAP help - If you wish to control the regulators on the Palmas series of - chips say Y here. This will enable support for all the software - controllable SMPS/LDO regulators. - - The regulators available on Palmas series chips vary depending - on the muxing. This is handled automatically in the driver by - reading the mux info from OTP. + Select this option to support Texas Instruments' on-chip Adaptive Body + Bias (ABB) LDO regulators. It is recommended that this option be + enabled on required TI SoC. Certain Operating Performance Points + on TI SoCs may be unstable without enabling this as it provides + device specific optimized bias to allow/optimize functionality. config REGULATOR_TPS51632 tristate "TI TPS51632 Power Regulator" @@ -481,16 +508,6 @@ config REGULATOR_TWL4030 This driver supports the voltage regulators provided by this family of companion chips. -config REGULATOR_TI_ABB - bool "TI Adaptive Body Bias on-chip LDO" - depends on ARCH_OMAP - help - Select this option to support Texas Instruments' on-chip Adaptive Body - Bias (ABB) LDO regulators. It is recommended that this option be - enabled on required TI SoC. Certain Operating Performance Points - on TI SoCs may be unstable without enabling this as it provides - device specific optimized bias to allow/optimize functionality. - config REGULATOR_VEXPRESS tristate "Versatile Express regulators" depends on VEXPRESS_CONFIG @@ -526,12 +543,5 @@ config REGULATOR_WM8994 This driver provides support for the voltage regulators on the WM8994 CODEC. -config REGULATOR_AS3711 - tristate "AS3711 PMIC" - depends on MFD_AS3711 - help - This driver provides support for the voltage regulators on the - AS3711 PMIC - endif diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index ba4a3cf..e292f26 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o obj-$(CONFIG_REGULATOR_USERSPACE_CONSUMER) += userspace-consumer.o +obj-$(CONFIG_REGULATOR_88PM800) += 88pm800.o obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o @@ -52,6 +53,7 @@ obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o +obj-$(CONFIG_REGULATOR_TI_ABB) += ti-abb-regulator.o obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o @@ -64,7 +66,6 @@ obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o -obj-$(CONFIG_REGULATOR_TI_ABB) += ti-abb-regulator.o obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 288c75a..42ae134 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2079,6 +2079,43 @@ int regulator_list_voltage_linear(struct regulator_dev *rdev, EXPORT_SYMBOL_GPL(regulator_list_voltage_linear); /** + * regulator_list_voltage_linear_range - List voltages for linear ranges + * + * @rdev: Regulator device + * @selector: Selector to convert into a voltage + * + * Regulators with a series of simple linear mappings between voltages + * and selectors can set linear_ranges in the regulator descriptor and + * then use this function as their list_voltage() operation, + */ +int regulator_list_voltage_linear_range(struct regulator_dev *rdev, + unsigned int selector) +{ + const struct regulator_linear_range *range; + int i; + + if (!rdev->desc->n_linear_ranges) { + BUG_ON(!rdev->desc->n_linear_ranges); + return -EINVAL; + } + + for (i = 0; i < rdev->desc->n_linear_ranges; i++) { + range = &rdev->desc->linear_ranges[i]; + + if (!(selector >= range->min_sel && + selector <= range->max_sel)) + continue; + + selector -= range->min_sel; + + return range->min_uV + (range->uV_step * selector); + } + + return -EINVAL; +} +EXPORT_SYMBOL_GPL(regulator_list_voltage_linear_range); + +/** * regulator_list_voltage_table - List voltages with table based mapping * * @rdev: Regulator device @@ -2368,6 +2405,64 @@ int regulator_map_voltage_linear(struct regulator_dev *rdev, } EXPORT_SYMBOL_GPL(regulator_map_voltage_linear); +/** + * regulator_map_voltage_linear - map_voltage() for multiple linear ranges + * + * @rdev: Regulator to operate on + * @min_uV: Lower bound for voltage + * @max_uV: Upper bound for voltage + * + * Drivers providing linear_ranges in their descriptor can use this as + * their map_voltage() callback. + */ +int regulator_map_voltage_linear_range(struct regulator_dev *rdev, + int min_uV, int max_uV) +{ + const struct regulator_linear_range *range; + int ret = -EINVAL; + int voltage, i; + + if (!rdev->desc->n_linear_ranges) { + BUG_ON(!rdev->desc->n_linear_ranges); + return -EINVAL; + } + + for (i = 0; i < rdev->desc->n_linear_ranges; i++) { + range = &rdev->desc->linear_ranges[i]; + + if (!(min_uV <= range->max_uV && max_uV >= range->min_uV)) + continue; + + if (min_uV <= range->min_uV) + min_uV = range->min_uV; + + /* range->uV_step == 0 means fixed voltage range */ + if (range->uV_step == 0) { + ret = 0; + } else { + ret = DIV_ROUND_UP(min_uV - range->min_uV, + range->uV_step); + if (ret < 0) + return ret; + } + + ret += range->min_sel; + + break; + } + + if (i == rdev->desc->n_linear_ranges) + return -EINVAL; + + /* Map back into a voltage to verify we're still in bounds */ + voltage = rdev->desc->ops->list_voltage(rdev, ret); + if (voltage < min_uV || voltage > max_uV) + return -EINVAL; + + return ret; +} +EXPORT_SYMBOL_GPL(regulator_map_voltage_linear_range); + static int _regulator_do_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV) { diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c index 9ff883f..76792c7 100644 --- a/drivers/regulator/wm831x-ldo.c +++ b/drivers/regulator/wm831x-ldo.c @@ -62,41 +62,12 @@ static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data) * General purpose LDOs */ -#define WM831X_GP_LDO_SELECTOR_LOW 0xe -#define WM831X_GP_LDO_MAX_SELECTOR 0x1f - -static int wm831x_gp_ldo_list_voltage(struct regulator_dev *rdev, - unsigned int selector) -{ - /* 0.9-1.6V in 50mV steps */ - if (selector <= WM831X_GP_LDO_SELECTOR_LOW) - return 900000 + (selector * 50000); - /* 1.7-3.3V in 100mV steps */ - if (selector <= WM831X_GP_LDO_MAX_SELECTOR) - return 1600000 + ((selector - WM831X_GP_LDO_SELECTOR_LOW) - * 100000); - return -EINVAL; -} - -static int wm831x_gp_ldo_map_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) -{ - int volt, vsel; - - if (min_uV < 900000) - vsel = 0; - else if (min_uV < 1700000) - vsel = ((min_uV - 900000) / 50000); - else - vsel = ((min_uV - 1700000) / 100000) - + WM831X_GP_LDO_SELECTOR_LOW + 1; - - volt = wm831x_gp_ldo_list_voltage(rdev, vsel); - if (volt < min_uV || volt > max_uV) - return -EINVAL; - - return vsel; -} +static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = { + { .min_uV = 900000, .max_uV = 1650000, .min_sel = 0, .max_sel = 14, + .uV_step = 50000 }, + { .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31, + .uV_step = 100000 }, +}; static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) @@ -105,7 +76,7 @@ static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev, struct wm831x *wm831x = ldo->wm831x; int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; - sel = wm831x_gp_ldo_map_voltage(rdev, uV, uV); + sel = regulator_map_voltage_linear_range(rdev, uV, uV); if (sel < 0) return sel; @@ -230,8 +201,8 @@ static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev, static struct regulator_ops wm831x_gp_ldo_ops = { - .list_voltage = wm831x_gp_ldo_list_voltage, - .map_voltage = wm831x_gp_ldo_map_voltage, + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage, @@ -290,7 +261,7 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev) ldo->desc.id = id; ldo->desc.type = REGULATOR_VOLTAGE; - ldo->desc.n_voltages = WM831X_GP_LDO_MAX_SELECTOR + 1; + ldo->desc.n_voltages = 32; ldo->desc.ops = &wm831x_gp_ldo_ops; ldo->desc.owner = THIS_MODULE; ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; @@ -299,6 +270,8 @@ static int wm831x_gp_ldo_probe(struct platform_device *pdev) ldo->desc.enable_mask = 1 << id; ldo->desc.bypass_reg = ldo->base; ldo->desc.bypass_mask = WM831X_LDO1_SWI; + ldo->desc.linear_ranges = wm831x_gp_ldo_ranges; + ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges); config.dev = pdev->dev.parent; if (pdata) @@ -358,43 +331,12 @@ static struct platform_driver wm831x_gp_ldo_driver = { * Analogue LDOs */ - -#define WM831X_ALDO_SELECTOR_LOW 0xc -#define WM831X_ALDO_MAX_SELECTOR 0x1f - -static int wm831x_aldo_list_voltage(struct regulator_dev *rdev, - unsigned int selector) -{ - /* 1-1.6V in 50mV steps */ - if (selector <= WM831X_ALDO_SELECTOR_LOW) - return 1000000 + (selector * 50000); - /* 1.7-3.5V in 100mV steps */ - if (selector <= WM831X_ALDO_MAX_SELECTOR) - return 1600000 + ((selector - WM831X_ALDO_SELECTOR_LOW) - * 100000); - return -EINVAL; -} - -static int wm831x_aldo_map_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) -{ - int volt, vsel; - - if (min_uV < 1000000) - vsel = 0; - else if (min_uV < 1700000) - vsel = ((min_uV - 1000000) / 50000); - else - vsel = ((min_uV - 1700000) / 100000) - + WM831X_ALDO_SELECTOR_LOW + 1; - - volt = wm831x_aldo_list_voltage(rdev, vsel); - if (volt < min_uV || volt > max_uV) - return -EINVAL; - - return vsel; - -} +static const struct regulator_linear_range wm831x_aldo_ranges[] = { + { .min_uV = 1000000, .max_uV = 1650000, .min_sel = 0, .max_sel = 12, + .uV_step = 50000 }, + { .min_uV = 1700000, .max_uV = 3500000, .min_sel = 13, .max_sel = 31, + .uV_step = 100000 }, +}; static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) @@ -403,7 +345,7 @@ static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev, struct wm831x *wm831x = ldo->wm831x; int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL; - sel = wm831x_aldo_map_voltage(rdev, uV, uV); + sel = regulator_map_voltage_linear_range(rdev, uV, uV); if (sel < 0) return sel; @@ -486,8 +428,8 @@ static int wm831x_aldo_get_status(struct regulator_dev *rdev) } static struct regulator_ops wm831x_aldo_ops = { - .list_voltage = wm831x_aldo_list_voltage, - .map_voltage = wm831x_aldo_map_voltage, + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .set_suspend_voltage = wm831x_aldo_set_suspend_voltage, @@ -545,7 +487,9 @@ static int wm831x_aldo_probe(struct platform_device *pdev) ldo->desc.id = id; ldo->desc.type = REGULATOR_VOLTAGE; - ldo->desc.n_voltages = WM831X_ALDO_MAX_SELECTOR + 1; + ldo->desc.n_voltages = 32; + ldo->desc.linear_ranges = wm831x_aldo_ranges; + ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges); ldo->desc.ops = &wm831x_aldo_ops; ldo->desc.owner = THIS_MODULE; ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL; diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c index 7f0fa22..5453dd0 100644 --- a/drivers/regulator/wm8350-regulator.c +++ b/drivers/regulator/wm8350-regulator.c @@ -542,41 +542,12 @@ static int wm8350_dcdc_set_suspend_mode(struct regulator_dev *rdev, return 0; } -static int wm8350_ldo_list_voltage(struct regulator_dev *rdev, - unsigned selector) -{ - if (selector > WM8350_LDO1_VSEL_MASK) - return -EINVAL; - - if (selector < 16) - return (selector * 50000) + 900000; - else - return ((selector - 16) * 100000) + 1800000; -} - -static int wm8350_ldo_map_voltage(struct regulator_dev *rdev, int min_uV, - int max_uV) -{ - int volt, sel; - int min_mV = min_uV / 1000; - int max_mV = max_uV / 1000; - - if (min_mV < 900 || min_mV > 3300) - return -EINVAL; - if (max_mV < 900 || max_mV > 3300) - return -EINVAL; - - if (min_mV < 1800) /* step size is 50mV < 1800mV */ - sel = DIV_ROUND_UP(min_uV - 900, 50); - else /* step size is 100mV > 1800mV */ - sel = DIV_ROUND_UP(min_uV - 1800, 100) + 16; - - volt = wm8350_ldo_list_voltage(rdev, sel); - if (volt < min_uV || volt > max_uV) - return -EINVAL; - - return sel; -} +static const struct regulator_linear_range wm8350_ldo_ranges[] = { + { .min_uV = 900000, .max_uV = 1750000, .min_sel = 0, .max_sel = 15, + .uV_step = 50000 }, + { .min_uV = 1800000, .max_uV = 3300000, .min_sel = 16, .max_sel = 31, + .uV_step = 100000 }, +}; static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) { @@ -603,7 +574,7 @@ static int wm8350_ldo_set_suspend_voltage(struct regulator_dev *rdev, int uV) return -EINVAL; } - sel = wm8350_ldo_map_voltage(rdev, uV, uV); + sel = regulator_map_voltage_linear_range(rdev, uV, uV); if (sel < 0) return -EINVAL; @@ -998,10 +969,10 @@ static struct regulator_ops wm8350_dcdc2_5_ops = { }; static struct regulator_ops wm8350_ldo_ops = { - .map_voltage = wm8350_ldo_map_voltage, + .map_voltage = regulator_map_voltage_linear_range, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, - .list_voltage = wm8350_ldo_list_voltage, + .list_voltage = regulator_list_voltage_linear_range, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, @@ -1108,6 +1079,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = { .irq = WM8350_IRQ_UV_LDO1, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_LDO1_VSEL_MASK + 1, + .linear_ranges = wm8350_ldo_ranges, + .n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges), .vsel_reg = WM8350_LDO1_CONTROL, .vsel_mask = WM8350_LDO1_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, @@ -1121,6 +1094,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = { .irq = WM8350_IRQ_UV_LDO2, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_LDO2_VSEL_MASK + 1, + .linear_ranges = wm8350_ldo_ranges, + .n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges), .vsel_reg = WM8350_LDO2_CONTROL, .vsel_mask = WM8350_LDO2_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, @@ -1134,6 +1109,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = { .irq = WM8350_IRQ_UV_LDO3, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_LDO3_VSEL_MASK + 1, + .linear_ranges = wm8350_ldo_ranges, + .n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges), .vsel_reg = WM8350_LDO3_CONTROL, .vsel_mask = WM8350_LDO3_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, @@ -1147,6 +1124,8 @@ static const struct regulator_desc wm8350_reg[NUM_WM8350_REGULATORS] = { .irq = WM8350_IRQ_UV_LDO4, .type = REGULATOR_VOLTAGE, .n_voltages = WM8350_LDO4_VSEL_MASK + 1, + .linear_ranges = wm8350_ldo_ranges, + .n_linear_ranges = ARRAY_SIZE(wm8350_ldo_ranges), .vsel_reg = WM8350_LDO4_CONTROL, .vsel_mask = WM8350_LDO4_VSEL_MASK, .enable_reg = WM8350_DCDC_LDO_REQUESTED, diff --git a/drivers/regulator/wm8400-regulator.c b/drivers/regulator/wm8400-regulator.c index a09f03e..2ac7e1a 100644 --- a/drivers/regulator/wm8400-regulator.c +++ b/drivers/regulator/wm8400-regulator.c @@ -19,47 +19,21 @@ #include <linux/regulator/driver.h> #include <linux/mfd/wm8400-private.h> -static int wm8400_ldo_list_voltage(struct regulator_dev *dev, - unsigned selector) -{ - if (selector > WM8400_LDO1_VSEL_MASK) - return -EINVAL; - - if (selector < 15) - return 900000 + (selector * 50000); - else - return 1700000 + ((selector - 15) * 100000); -} - -static int wm8400_ldo_map_voltage(struct regulator_dev *dev, - int min_uV, int max_uV) -{ - u16 val; - int volt; - - if (min_uV < 900000 || min_uV > 3300000) - return -EINVAL; - - if (min_uV < 1700000) /* Steps of 50mV from 900mV; */ - val = DIV_ROUND_UP(min_uV - 900000, 50000); - else /* Steps of 100mV from 1700mV */ - val = DIV_ROUND_UP(min_uV - 1700000, 100000) + 15; - - volt = wm8400_ldo_list_voltage(dev, val); - if (volt < min_uV || volt > max_uV) - return -EINVAL; - - return val; -} +static const struct regulator_linear_range wm8400_ldo_ranges[] = { + { .min_uV = 900000, .max_uV = 1600000, .min_sel = 0, .max_sel = 14, + .uV_step = 50000 }, + { .min_uV = 1700000, .max_uV = 3300000, .min_sel = 15, .max_sel = 31, + .uV_step = 100000 }, +}; static struct regulator_ops wm8400_ldo_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, - .list_voltage = wm8400_ldo_list_voltage, + .list_voltage = regulator_list_voltage_linear_range, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, - .map_voltage = wm8400_ldo_map_voltage, + .map_voltage = regulator_map_voltage_linear_range, }; static unsigned int wm8400_dcdc_get_mode(struct regulator_dev *dev) @@ -155,6 +129,8 @@ static struct regulator_desc regulators[] = { .enable_reg = WM8400_LDO1_CONTROL, .enable_mask = WM8400_LDO1_ENA, .n_voltages = WM8400_LDO1_VSEL_MASK + 1, + .linear_ranges = wm8400_ldo_ranges, + .n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges), .vsel_reg = WM8400_LDO1_CONTROL, .vsel_mask = WM8400_LDO1_VSEL_MASK, .type = REGULATOR_VOLTAGE, @@ -167,6 +143,8 @@ static struct regulator_desc regulators[] = { .enable_reg = WM8400_LDO2_CONTROL, .enable_mask = WM8400_LDO2_ENA, .n_voltages = WM8400_LDO2_VSEL_MASK + 1, + .linear_ranges = wm8400_ldo_ranges, + .n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges), .type = REGULATOR_VOLTAGE, .vsel_reg = WM8400_LDO2_CONTROL, .vsel_mask = WM8400_LDO2_VSEL_MASK, @@ -179,6 +157,8 @@ static struct regulator_desc regulators[] = { .enable_reg = WM8400_LDO3_CONTROL, .enable_mask = WM8400_LDO3_ENA, .n_voltages = WM8400_LDO3_VSEL_MASK + 1, + .linear_ranges = wm8400_ldo_ranges, + .n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges), .vsel_reg = WM8400_LDO3_CONTROL, .vsel_mask = WM8400_LDO3_VSEL_MASK, .type = REGULATOR_VOLTAGE, @@ -191,6 +171,8 @@ static struct regulator_desc regulators[] = { .enable_reg = WM8400_LDO4_CONTROL, .enable_mask = WM8400_LDO4_ENA, .n_voltages = WM8400_LDO4_VSEL_MASK + 1, + .linear_ranges = wm8400_ldo_ranges, + .n_linear_ranges = ARRAY_SIZE(wm8400_ldo_ranges), .vsel_reg = WM8400_LDO4_CONTROL, .vsel_mask = WM8400_LDO4_VSEL_MASK, .type = REGULATOR_VOLTAGE, diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 6700cc9..67e13aa 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -40,6 +40,24 @@ enum regulator_status { }; /** + * Specify a range of voltages for regulator_map_linar_range() and + * regulator_list_linear_range(). + * + * @min_uV: Lowest voltage in range + * @max_uV: Highest voltage in range + * @min_sel: Lowest selector for range + * @max_sel: Highest selector for range + * @uV_step: Step size + */ +struct regulator_linear_range { + unsigned int min_uV; + unsigned int max_uV; + unsigned int min_sel; + unsigned int max_sel; + unsigned int uV_step; +}; + +/** * struct regulator_ops - regulator operations. * * @enable: Configure the regulator as enabled. @@ -223,6 +241,9 @@ struct regulator_desc { unsigned int linear_min_sel; unsigned int ramp_delay; + const struct regulator_linear_range *linear_ranges; + int n_linear_ranges; + const unsigned int *volt_table; unsigned int vsel_reg; @@ -326,10 +347,14 @@ int regulator_mode_to_status(unsigned int); int regulator_list_voltage_linear(struct regulator_dev *rdev, unsigned int selector); +int regulator_list_voltage_linear_range(struct regulator_dev *rdev, + unsigned int selector); int regulator_list_voltage_table(struct regulator_dev *rdev, unsigned int selector); int regulator_map_voltage_linear(struct regulator_dev *rdev, int min_uV, int max_uV); +int regulator_map_voltage_linear_range(struct regulator_dev *rdev, + int min_uV, int max_uV); int regulator_map_voltage_iterate(struct regulator_dev *rdev, int min_uV, int max_uV); int regulator_map_voltage_ascend(struct regulator_dev *rdev, |