diff options
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/Kconfig | 26 | ||||
| -rw-r--r-- | drivers/regulator/Makefile | 3 | ||||
| -rw-r--r-- | drivers/regulator/da903x.c | 2 | ||||
| -rw-r--r-- | drivers/regulator/fixed.c | 18 | ||||
| -rw-r--r-- | drivers/regulator/lp3971.c | 562 | ||||
| -rw-r--r-- | drivers/regulator/max1586.c | 282 | ||||
| -rw-r--r-- | drivers/regulator/pcf50633-regulator.c | 2 | ||||
| -rw-r--r-- | drivers/regulator/userspace-consumer.c | 200 | ||||
| -rw-r--r-- | drivers/regulator/virtual.c | 1 | ||||
| -rw-r--r-- | drivers/regulator/wm8350-regulator.c | 1 | ||||
| -rw-r--r-- | drivers/regulator/wm8400-regulator.c | 8 |
11 files changed, 1097 insertions, 8 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index e58c0ce65aa6..f4317798e47c 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -47,6 +47,16 @@ config REGULATOR_VIRTUAL_CONSUMER If unsure, say no. +config REGULATOR_USERSPACE_CONSUMER + tristate "Userspace regulator consumer support" + default n + help + There are some classes of devices that are controlled entirely + from user space. Usersapce consumer driver provides ability to + control power supplies for such devices. + + If unsure, say no. + config REGULATOR_BQ24022 tristate "TI bq24022 Dual Input 1-Cell Li-Ion Charger IC" default n @@ -56,6 +66,15 @@ config REGULATOR_BQ24022 charging select between 100 mA and 500 mA charging current limit. +config REGULATOR_MAX1586 + tristate "Maxim 1586/1587 voltage regulator" + depends on I2C + default n + help + This driver controls a Maxim 1586 or 1587 voltage output + regulator via I2C bus. The provided regulator is suitable + for PXA27x chips to control VCC_CORE and VCC_USIM voltages. + config REGULATOR_TWL4030 bool "TI TWL4030/TWL5030/TPS695x0 PMIC" depends on TWL4030_CORE @@ -91,4 +110,11 @@ config REGULATOR_PCF50633 Say Y here to support the voltage regulators and convertors on PCF50633 +config REGULATOR_LP3971 + tristate "National Semiconductors LP3971 PMIC regulator driver" + depends on I2C + help + Say Y here to support the voltage regulators and convertors + on National Semiconductors LP3971 PMIC + endif diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index bac133afc061..4d762c4cccfd 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -6,8 +6,11 @@ obj-$(CONFIG_REGULATOR) += core.o obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o +obj-$(CONFIG_REGULATOR_USERSPACE_CONSUMER) += userspace-consumer.o obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o +obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o +obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o obj-$(CONFIG_REGULATOR_TWL4030) += twl4030-regulator.o obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c index c6628f5a0af7..b8b89ef10a84 100644 --- a/drivers/regulator/da903x.c +++ b/drivers/regulator/da903x.c @@ -504,7 +504,7 @@ static int __init da903x_regulator_init(void) { return platform_driver_register(&da903x_regulator_driver); } -module_init(da903x_regulator_init); +subsys_initcall(da903x_regulator_init); static void __exit da903x_regulator_exit(void) { diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c index 23d554628a76..cdc674fb46c3 100644 --- a/drivers/regulator/fixed.c +++ b/drivers/regulator/fixed.c @@ -44,10 +44,22 @@ static int fixed_voltage_get_voltage(struct regulator_dev *dev) return data->microvolts; } +static int fixed_voltage_list_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct fixed_voltage_data *data = rdev_get_drvdata(dev); + + if (selector != 0) + return -EINVAL; + + return data->microvolts; +} + static struct regulator_ops fixed_voltage_ops = { .is_enabled = fixed_voltage_is_enabled, .enable = fixed_voltage_enable, .get_voltage = fixed_voltage_get_voltage, + .list_voltage = fixed_voltage_list_voltage, }; static int regulator_fixed_voltage_probe(struct platform_device *pdev) @@ -69,7 +81,8 @@ static int regulator_fixed_voltage_probe(struct platform_device *pdev) } drvdata->desc.type = REGULATOR_VOLTAGE; drvdata->desc.owner = THIS_MODULE; - drvdata->desc.ops = &fixed_voltage_ops, + drvdata->desc.ops = &fixed_voltage_ops; + drvdata->desc.n_voltages = 1; drvdata->microvolts = config->microvolts; @@ -117,7 +130,7 @@ static int __init regulator_fixed_voltage_init(void) { return platform_driver_register(®ulator_fixed_voltage_driver); } -module_init(regulator_fixed_voltage_init); +subsys_initcall(regulator_fixed_voltage_init); static void __exit regulator_fixed_voltage_exit(void) { @@ -128,3 +141,4 @@ module_exit(regulator_fixed_voltage_exit); MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); MODULE_DESCRIPTION("Fixed voltage regulator"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:reg-fixed-voltage"); diff --git a/drivers/regulator/lp3971.c b/drivers/regulator/lp3971.c new file mode 100644 index 000000000000..a61018a27698 --- /dev/null +++ b/drivers/regulator/lp3971.c @@ -0,0 +1,562 @@ +/* + * Regulator driver for National Semiconductors LP3971 PMIC chip + * + * Copyright (C) 2009 Samsung Electronics + * Author: Marek Szyprowski <m.szyprowski@samsung.com> + * + * Based on wm8350.c + * + * 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/bug.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/lp3971.h> + +struct lp3971 { + struct device *dev; + struct mutex io_lock; + struct i2c_client *i2c; + int num_regulators; + struct regulator_dev **rdev; +}; + +static u8 lp3971_reg_read(struct lp3971 *lp3971, u8 reg); +static int lp3971_set_bits(struct lp3971 *lp3971, u8 reg, u16 mask, u16 val); + +#define LP3971_SYS_CONTROL1_REG 0x07 + +/* System control register 1 initial value, + bits 4 and 5 are EPROM programmable */ +#define SYS_CONTROL1_INIT_VAL 0x40 +#define SYS_CONTROL1_INIT_MASK 0xCF + +#define LP3971_BUCK_VOL_ENABLE_REG 0x10 +#define LP3971_BUCK_VOL_CHANGE_REG 0x20 + +/* Voltage control registers shift: + LP3971_BUCK1 -> 0 + LP3971_BUCK2 -> 4 + LP3971_BUCK3 -> 6 +*/ +#define BUCK_VOL_CHANGE_SHIFT(x) (((1 << x) & ~0x01) << 1) +#define BUCK_VOL_CHANGE_FLAG_GO 0x01 +#define BUCK_VOL_CHANGE_FLAG_TARGET 0x02 +#define BUCK_VOL_CHANGE_FLAG_MASK 0x03 + +#define LP3971_BUCK1_BASE 0x23 +#define LP3971_BUCK2_BASE 0x29 +#define LP3971_BUCK3_BASE 0x32 + +const static int buck_base_addr[] = { + LP3971_BUCK1_BASE, + LP3971_BUCK2_BASE, + LP3971_BUCK3_BASE, +}; + +#define LP3971_BUCK_TARGET_VOL1_REG(x) (buck_base_addr[x]) +#define LP3971_BUCK_TARGET_VOL2_REG(x) (buck_base_addr[x]+1) + +const static int buck_voltage_map[] = { + 0, 800, 850, 900, 950, 1000, 1050, 1100, + 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500, + 1550, 1600, 1650, 1700, 1800, 1900, 2500, 2800, + 3000, 3300, +}; + +#define BUCK_TARGET_VOL_MASK 0x3f +#define BUCK_TARGET_VOL_MIN_IDX 0x01 +#define BUCK_TARGET_VOL_MAX_IDX 0x19 + +#define LP3971_BUCK_RAMP_REG(x) (buck_base_addr[x]+2) + +#define LP3971_LDO_ENABLE_REG 0x12 +#define LP3971_LDO_VOL_CONTR_BASE 0x39 + +/* Voltage control registers: + LP3971_LDO1 -> LP3971_LDO_VOL_CONTR_BASE + 0 + LP3971_LDO2 -> LP3971_LDO_VOL_CONTR_BASE + 0 + LP3971_LDO3 -> LP3971_LDO_VOL_CONTR_BASE + 1 + LP3971_LDO4 -> LP3971_LDO_VOL_CONTR_BASE + 1 + LP3971_LDO5 -> LP3971_LDO_VOL_CONTR_BASE + 2 +*/ +#define LP3971_LDO_VOL_CONTR_REG(x) (LP3971_LDO_VOL_CONTR_BASE + (x >> 1)) + +/* Voltage control registers shift: + LP3971_LDO1 -> 0, LP3971_LDO2 -> 4 + LP3971_LDO3 -> 0, LP3971_LDO4 -> 4 + LP3971_LDO5 -> 0 +*/ +#define LDO_VOL_CONTR_SHIFT(x) ((x & 1) << 2) +#define LDO_VOL_CONTR_MASK 0x0f + +const static int ldo45_voltage_map[] = { + 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, + 1400, 1500, 1800, 1900, 2500, 2800, 3000, 3300, +}; + +const static int ldo123_voltage_map[] = { + 1800, 1900, 2000, 2100, 2200, 2300, 2400, 2500, + 2600, 2700, 2800, 2900, 3000, 3100, 3200, 3300, +}; + +const static int *ldo_voltage_map[] = { + ldo123_voltage_map, /* LDO1 */ + ldo123_voltage_map, /* LDO2 */ + ldo123_voltage_map, /* LDO3 */ + ldo45_voltage_map, /* LDO4 */ + ldo45_voltage_map, /* LDO5 */ +}; + +#define LDO_VOL_VALUE_MAP(x) (ldo_voltage_map[(x - LP3971_LDO1)]) + +#define LDO_VOL_MIN_IDX 0x00 +#define LDO_VOL_MAX_IDX 0x0f + +static int lp3971_ldo_list_voltage(struct regulator_dev *dev, unsigned index) +{ + int ldo = rdev_get_id(dev) - LP3971_LDO1; + return 1000 * LDO_VOL_VALUE_MAP(ldo)[index]; +} + +static int lp3971_ldo_is_enabled(struct regulator_dev *dev) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3971_LDO1; + u16 mask = 1 << (1 + ldo); + u16 val; + + val = lp3971_reg_read(lp3971, LP3971_LDO_ENABLE_REG); + return (val & mask) != 0; +} + +static int lp3971_ldo_enable(struct regulator_dev *dev) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3971_LDO1; + u16 mask = 1 << (1 + ldo); + + return lp3971_set_bits(lp3971, LP3971_LDO_ENABLE_REG, mask, mask); +} + +static int lp3971_ldo_disable(struct regulator_dev *dev) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3971_LDO1; + u16 mask = 1 << (1 + ldo); + + return lp3971_set_bits(lp3971, LP3971_LDO_ENABLE_REG, mask, 0); +} + +static int lp3971_ldo_get_voltage(struct regulator_dev *dev) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3971_LDO1; + u16 val, reg; + + reg = lp3971_reg_read(lp3971, LP3971_LDO_VOL_CONTR_REG(ldo)); + val = (reg >> LDO_VOL_CONTR_SHIFT(ldo)) & LDO_VOL_CONTR_MASK; + + return 1000 * LDO_VOL_VALUE_MAP(ldo)[val]; +} + +static int lp3971_ldo_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3971_LDO1; + int min_vol = min_uV / 1000, max_vol = max_uV / 1000; + const int *vol_map = LDO_VOL_VALUE_MAP(ldo); + u16 val; + + if (min_vol < vol_map[LDO_VOL_MIN_IDX] || + min_vol > vol_map[LDO_VOL_MAX_IDX]) + return -EINVAL; + + for (val = LDO_VOL_MIN_IDX; val <= LDO_VOL_MAX_IDX; val++) + if (vol_map[val] >= min_vol) + break; + + if (vol_map[val] > max_vol) + return -EINVAL; + + return lp3971_set_bits(lp3971, LP3971_LDO_VOL_CONTR_REG(ldo), + LDO_VOL_CONTR_MASK << LDO_VOL_CONTR_SHIFT(ldo), val); +} + +static struct regulator_ops lp3971_ldo_ops = { + .list_voltage = lp3971_ldo_list_voltage, + .is_enabled = lp3971_ldo_is_enabled, + .enable = lp3971_ldo_enable, + .disable = lp3971_ldo_disable, + .get_voltage = lp3971_ldo_get_voltage, + .set_voltage = lp3971_ldo_set_voltage, +}; + +static int lp3971_dcdc_list_voltage(struct regulator_dev *dev, unsigned index) +{ + return 1000 * buck_voltage_map[index]; +} + +static int lp3971_dcdc_is_enabled(struct regulator_dev *dev) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3971_DCDC1; + u16 mask = 1 << (buck * 2); + u16 val; + + val = lp3971_reg_read(lp3971, LP3971_BUCK_VOL_ENABLE_REG); + return (val & mask) != 0; +} + +static int lp3971_dcdc_enable(struct regulator_dev *dev) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3971_DCDC1; + u16 mask = 1 << (buck * 2); + + return lp3971_set_bits(lp3971, LP3971_BUCK_VOL_ENABLE_REG, mask, mask); +} + +static int lp3971_dcdc_disable(struct regulator_dev *dev) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3971_DCDC1; + u16 mask = 1 << (buck * 2); + + return lp3971_set_bits(lp3971, LP3971_BUCK_VOL_ENABLE_REG, mask, 0); +} + +static int lp3971_dcdc_get_voltage(struct regulator_dev *dev) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3971_DCDC1; + u16 reg; + int val; + + reg = lp3971_reg_read(lp3971, LP3971_BUCK_TARGET_VOL1_REG(buck)); + reg &= BUCK_TARGET_VOL_MASK; + + if (reg <= BUCK_TARGET_VOL_MAX_IDX) + val = 1000 * buck_voltage_map[reg]; + else { + val = 0; + dev_warn(&dev->dev, "chip reported incorrect voltage value.\n"); + } + + return val; +} + +static int lp3971_dcdc_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV) +{ + struct lp3971 *lp3971 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3971_DCDC1; + int min_vol = min_uV / 1000, max_vol = max_uV / 1000; + const int *vol_map = buck_voltage_map; + u16 val; + int ret; + + if (min_vol < vol_map[BUCK_TARGET_VOL_MIN_IDX] || + min_vol > vol_map[BUCK_TARGET_VOL_MAX_IDX]) + return -EINVAL; + + for (val = BUCK_TARGET_VOL_MIN_IDX; val <= BUCK_TARGET_VOL_MAX_IDX; + val++) + if (vol_map[val] >= min_vol) + break; + + if (vol_map[val] > max_vol) + return -EINVAL; + + ret = lp3971_set_bits(lp3971, LP3971_BUCK_TARGET_VOL1_REG(buck), + BUCK_TARGET_VOL_MASK, val); + if (ret) + return ret; + + ret = lp3971_set_bits(lp3971, LP3971_BUCK_VOL_CHANGE_REG, + BUCK_VOL_CHANGE_FLAG_MASK << BUCK_VOL_CHANGE_SHIFT(buck), + BUCK_VOL_CHANGE_FLAG_GO << BUCK_VOL_CHANGE_SHIFT(buck)); + if (ret) + return ret; + + return lp3971_set_bits(lp3971, LP3971_BUCK_VOL_CHANGE_REG, + BUCK_VOL_CHANGE_FLAG_MASK << BUCK_VOL_CHANGE_SHIFT(buck), + 0 << BUCK_VOL_CHANGE_SHIFT(buck)); +} + +static struct regulator_ops lp3971_dcdc_ops = { + .list_voltage = lp3971_dcdc_list_voltage, + .is_enabled = lp3971_dcdc_is_enabled, + .enable = lp3971_dcdc_enable, + .disable = lp3971_dcdc_disable, + .get_voltage = lp3971_dcdc_get_voltage, + .set_voltage = lp3971_dcdc_set_voltage, +}; + +static struct regulator_desc regulators[] = { + { + .name = "LDO1", + .id = LP3971_LDO1, + .ops = &lp3971_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo123_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "LDO2", + .id = LP3971_LDO2, + .ops = &lp3971_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo123_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "LDO3", + .id = LP3971_LDO3, + .ops = &lp3971_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo123_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "LDO4", + .id = LP3971_LDO4, + .ops = &lp3971_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo45_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "LDO5", + .id = LP3971_LDO5, + .ops = &lp3971_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo45_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "DCDC1", + .id = LP3971_DCDC1, + .ops = &lp3971_dcdc_ops, + .n_voltages = ARRAY_SIZE(buck_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "DCDC2", + .id = LP3971_DCDC2, + .ops = &lp3971_dcdc_ops, + .n_voltages = ARRAY_SIZE(buck_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "DCDC3", + .id = LP3971_DCDC3, + .ops = &lp3971_dcdc_ops, + .n_voltages = ARRAY_SIZE(buck_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, +}; + +static int lp3971_i2c_read(struct i2c_client *i2c, char reg, int count, + u16 *dest) +{ + int ret; + + if (count != 1) + return -EIO; + ret = i2c_smbus_read_byte_data(i2c, reg); + if (ret < 0 || count != 1) + return -EIO; + + *dest = ret; + return 0; +} + +static int lp3971_i2c_write(struct i2c_client *i2c, char reg, int count, + const u16 *src) +{ + int ret; + + if (count != 1) + return -EIO; + ret = i2c_smbus_write_byte_data(i2c, reg, *src); + if (ret >= 0) + return 0; + + return ret; +} + +static u8 lp3971_reg_read(struct lp3971 *lp3971, u8 reg) +{ + u16 val = 0; + + mutex_lock(&lp3971->io_lock); + + lp3971_i2c_read(lp3971->i2c, reg, 1, &val); + + dev_dbg(lp3971->dev, "reg read 0x%02x -> 0x%02x\n", (int)reg, + (unsigned)val&0xff); + + mutex_unlock(&lp3971->io_lock); + + return val & 0xff; +} + +static int lp3971_set_bits(struct lp3971 *lp3971, u8 reg, u16 mask, u16 val) +{ + u16 tmp; + int ret; + + mutex_lock(&lp3971->io_lock); + + ret = lp3971_i2c_read(lp3971->i2c, reg, 1, &tmp); + tmp = (tmp & ~mask) | val; + if (ret == 0) { + ret = lp3971_i2c_write(lp3971->i2c, reg, 1, &tmp); + dev_dbg(lp3971->dev, "reg write 0x%02x -> 0x%02x\n", (int)reg, + (unsigned)val&0xff); + } + mutex_unlock(&lp3971->io_lock); + + return ret; +} + +static int setup_regulators(struct lp3971 *lp3971, + struct lp3971_platform_data *pdata) +{ + int i, err; + int num_regulators = pdata->num_regulators; + lp3971->num_regulators = num_regulators; + lp3971->rdev = kzalloc(sizeof(struct regulator_dev *) * num_regulators, + GFP_KERNEL); + + /* Instantiate the regulators */ + for (i = 0; i < num_regulators; i++) { + int id = pdata->regulators[i].id; + lp3971->rdev[i] = regulator_register(®ulators[id], + lp3971->dev, pdata->regulators[i].initdata, lp3971); + + err = IS_ERR(lp3971->rdev[i]); + if (err) { + dev_err(lp3971->dev, "regulator init failed: %d\n", + err); + goto error; + } + } + + return 0; +error: + for (i = 0; i < num_regulators; i++) + if (lp3971->rdev[i]) + regulator_unregister(lp3971->rdev[i]); + kfree(lp3971->rdev); + lp3971->rdev = NULL; + return err; +} + +static int __devinit lp3971_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct lp3971 *lp3971; + struct lp3971_platform_data *pdata = i2c->dev.platform_data; + int ret; + u16 val; + + lp3971 = kzalloc(sizeof(struct lp3971), GFP_KERNEL); + if (lp3971 == NULL) { + ret = -ENOMEM; + goto err; + } + + lp3971->i2c = i2c; + lp3971->dev = &i2c->dev; + i2c_set_clientdata(i2c, lp3971); + + mutex_init(&lp3971->io_lock); + + /* Detect LP3971 */ + ret = lp3971_i2c_read(i2c, LP3971_SYS_CONTROL1_REG, 1, &val); + if (ret == 0 && (val & SYS_CONTROL1_INIT_MASK) != SYS_CONTROL1_INIT_VAL) + ret = -ENODEV; + if (ret < 0) { + dev_err(&i2c->dev, "failed to detect device\n"); + goto err_detect; + } + + if (pdata) { + ret = setup_regulators(lp3971, pdata); + if (ret < 0) + goto err_detect; + } else + dev_warn(lp3971->dev, "No platform init data supplied\n"); + + return 0; + +err_detect: + i2c_set_clientdata(i2c, NULL); + kfree(lp3971); +err: + return ret; +} + +static int __devexit lp3971_i2c_remove(struct i2c_client *i2c) +{ + struct lp3971 *lp3971 = i2c_get_clientdata(i2c); + int i; + for (i = 0; i < lp3971->num_regulators; i++) + if (lp3971->rdev[i]) + regulator_unregister(lp3971->rdev[i]); + kfree(lp3971->rdev); + i2c_set_clientdata(i2c, NULL); + kfree(lp3971); + + return 0; +} + +static const struct i2c_device_id lp3971_i2c_id[] = { + { "lp3971", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, lp3971_i2c_id); + +static struct i2c_driver lp3971_i2c_driver = { + .driver = { + .name = "LP3971", + .owner = THIS_MODULE, + }, + .probe = lp3971_i2c_probe, + .remove = __devexit_p(lp3971_i2c_remove), + .id_table = lp3971_i2c_id, +}; + +static int __init lp3971_module_init(void) +{ + int ret = -ENODEV; + + ret = i2c_add_driver(&lp3971_i2c_driver); + if (ret != 0) + pr_err("Failed to register I2C driver: %d\n", ret); + + return ret; +} +module_init(lp3971_module_init); + +static void __exit lp3971_module_exit(void) +{ + i2c_del_driver(&lp3971_i2c_driver); +} +module_exit(lp3971_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Marek Szyprowski <m.szyprowski@samsung.com>"); +MODULE_DESCRIPTION("LP3971 PMIC driver"); diff --git a/drivers/regulator/max1586.c b/drivers/regulator/max1586.c new file mode 100644 index 000000000000..2c082d3ef484 --- /dev/null +++ b/drivers/regulator/max1586.c @@ -0,0 +1,282 @@ +/* + * max1586.c -- Voltage and current regulation for the Maxim 1586 + * + * Copyright (C) 2008 Robert Jarzmik + * + * 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 + */ +#include <linux/module.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/max1586.h> + +#define MAX1586_V3_MAX_VSEL 31 +#define MAX1586_V6_MAX_VSEL 3 + +#define MAX1586_V3_MIN_UV 700000 +#define MAX1586_V3_MAX_UV 1475000 + +#define MAX1586_V6_MIN_UV 0 +#define MAX1586_V6_MAX_UV 3000000 + +#define I2C_V3_SELECT (0 << 5) +#define I2C_V6_SELECT (1 << 5) + +struct max1586_data { + struct i2c_client *client; + + /* min/max V3 voltage */ + unsigned int min_uV; + unsigned int max_uV; + + struct regulator_dev *rdev[0]; +}; + +/* + * V3 voltage + * On I2C bus, sending a "x" byte to the max1586 means : + * set V3 to 0.700V + (x & 0x1f) * 0.025V + * This voltage can be increased by external resistors + * R24 and R25=100kOhm as described in the data sheet. + * The gain is approximately: 1 + R24/R25 + R24/185.5kOhm + */ +static int max1586_v3_calc_voltage(struct max1586_data *max1586, + unsigned selector) +{ + unsigned range_uV = max1586->max_uV - max1586->min_uV; + + return max1586->min_uV + (selector * range_uV / MAX1586_V3_MAX_VSEL); +} + +static int max1586_v3_set(struct regulator_dev *rdev, int min_uV, int max_uV) +{ + struct max1586_data *max1586 = rdev_get_drvdata(rdev); + struct i2c_client *client = max1586->client; + unsigned range_uV = max1586->max_uV - max1586->min_uV; + unsigned selector; + u8 v3_prog; + + if (min_uV > max1586->max_uV || max_uV < max1586->min_uV) + return -EINVAL; + if (min_uV < max1586->min_uV) + min_uV = max1586->min_uV; + + selector = ((min_uV - max1586->min_uV) * MAX1586_V3_MAX_VSEL + + range_uV - 1) / range_uV; + if (max1586_v3_calc_voltage(max1586, selector) > max_uV) + return -EINVAL; + + dev_dbg(&client->dev, "changing voltage v3 to %dmv\n", + max1586_v3_calc_voltage(max1586, selector) / 1000); + + v3_prog = I2C_V3_SELECT | (u8) selector; + return i2c_smbus_write_byte(client, v3_prog); +} + +static int max1586_v3_list(struct regulator_dev *rdev, unsigned selector) +{ + struct max1586_data *max1586 = rdev_get_drvdata(rdev); + + if (selector > MAX1586_V3_MAX_VSEL) + return -EINVAL; + return max1586_v3_calc_voltage(max1586, selector); +} + +/* + * V6 voltage + * On I2C bus, sending a "x" byte to the max1586 means : + * set V6 to either 0V, 1.8V, 2.5V, 3V depending on (x & 0x3) + * As regulator framework doesn't accept voltages to be 0V, we use 1uV. + */ +static int max1586_v6_calc_voltage(unsigned selector) +{ + static int voltages_uv[] = { 1, 1800000, 2500000, 3000000 }; + + return voltages_uv[selector]; +} + +static int max1586_v6_set(struct regulator_dev *rdev, int min_uV, int max_uV) +{ + struct i2c_client *client = rdev_get_drvdata(rdev); + unsigned selector; + u8 v6_prog; + + if (min_uV < MAX1586_V6_MIN_UV || min_uV > MAX1586_V6_MAX_UV) + return -EINVAL; + if (max_uV < MAX1586_V6_MIN_UV || max_uV > MAX1586_V6_MAX_UV) + return -EINVAL; + + if (min_uV >= 3000000) + selector = 3; + if (min_uV < 3000000) + selector = 2; + if (min_uV < 2500000) + selector = 1; + if (min_uV < 1800000) + selector = 0; + + if (max1586_v6_calc_voltage(selector) > max_uV) + return -EINVAL; + + dev_dbg(&client->dev, "changing voltage v6 to %dmv\n", + max1586_v6_calc_voltage(selector) / 1000); + + v6_prog = I2C_V6_SELECT | (u8) selector; + return i2c_smbus_write_byte(client, v6_prog); +} + +static int max1586_v6_list(struct regulator_dev *rdev, unsigned selector) +{ + if (selector > MAX1586_V6_MAX_VSEL) + return -EINVAL; + return max1586_v6_calc_voltage(selector); +} + +/* + * The Maxim 1586 controls V3 and V6 voltages, but offers no way of reading back + * the set up value. + */ +static struct regulator_ops max1586_v3_ops = { + .set_voltage = max1586_v3_set, + .list_voltage = max1586_v3_list, +}; + +static struct regulator_ops max1586_v6_ops = { + .set_voltage = max1586_v6_set, + .list_voltage = max1586_v6_list, +}; + +static struct regulator_desc max1586_reg[] = { + { + .name = "Output_V3", + .id = MAX1586_V3, + .ops = &max1586_v3_ops, + .type = REGULATOR_VOLTAGE, + .n_voltages = MAX1586_V3_MAX_VSEL + 1, + .owner = THIS_MODULE, + }, + { + .name = "Output_V6", + .id = MAX1586_V6, + .ops = &max1586_v6_ops, + .type = REGULATOR_VOLTAGE, + .n_voltages = MAX1586_V6_MAX_VSEL + 1, + .owner = THIS_MODULE, + }, +}; + +static int max1586_pmic_probe(struct i2c_client *client, + const struct i2c_device_id *i2c_id) +{ + struct regulator_dev **rdev; + struct max1586_platform_data *pdata = client->dev.platform_data; + struct max1586_data *max1586; + int i, id, ret = -ENOMEM; + + max1586 = kzalloc(sizeof(struct max1586_data) + + sizeof(struct regulator_dev *) * (MAX1586_V6 + 1), + GFP_KERNEL); + if (!max1586) + goto out; + + max1586->client = client; + + if (!pdata->v3_gain) { + ret = -EINVAL; + goto out_unmap; + } + max1586->min_uV = MAX1586_V3_MIN_UV / 1000 * pdata->v3_gain / 1000; + max1586->max_uV = MAX1586_V3_MAX_UV / 1000 * pdata->v3_gain / 1000; + + rdev = max1586->rdev; + for (i = 0; i < pdata->num_subdevs && i <= MAX1586_V6; i++) { + id = pdata->subdevs[i].id; + if (!pdata->subdevs[i].platform_data) + continue; + if (id < MAX1586_V3 || id > MAX1586_V6) { + dev_err(&client->dev, "invalid regulator id %d\n", id); + goto err; + } + rdev[i] = regulator_register(&max1586_reg[id], &client->dev, + pdata->subdevs[i].platform_data, + max1586); + if (IS_ERR(rdev[i])) { + ret = PTR_ERR(rdev[i]); + dev_err(&client->dev, "failed to register %s\n", + max1586_reg[id].name); + goto err; + } + } + + i2c_set_clientdata(client, rdev); + dev_info(&client->dev, "Maxim 1586 regulator driver loaded\n"); + return 0; + +err: + while (--i >= 0) + regulator_unregister(rdev[i]); +out_unmap: + kfree(max1586); +out: + return ret; +} + +static int max1586_pmic_remove(struct i2c_client *client) +{ + struct regulator_dev **rdev = i2c_get_clientdata(client); + int i; + + for (i = 0; i <= MAX1586_V6; i++) + if (rdev[i]) + regulator_unregister(rdev[i]); + kfree(rdev); + i2c_set_clientdata(client, NULL); + + return 0; +} + +static const struct i2c_device_id max1586_id[] = { + { "max1586", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max1586_id); + +static struct i2c_driver max1586_pmic_driver = { + .probe = max1586_pmic_probe, + .remove = max1586_pmic_remove, + .driver = { + .name = "max1586", + }, + .id_table = max1586_id, +}; + +static int __init max1586_pmic_init(void) +{ + return i2c_add_driver(&max1586_pmic_driver); +} +subsys_initcall(max1586_pmic_init); + +static void __exit max1586_pmic_exit(void) +{ + i2c_del_driver(&max1586_pmic_driver); +} +module_exit(max1586_pmic_exit); + +/* Module information */ +MODULE_DESCRIPTION("MAXIM 1586 voltage regulator driver"); +MODULE_AUTHOR("Robert Jarzmik"); +MODULE_LICENSE("GPL"); diff --git a/drivers/regulator/pcf50633-regulator.c b/drivers/regulator/pcf50633-regulator.c index cd761d85c8fd..8e14900eb686 100644 --- a/drivers/regulator/pcf50633-regulator.c +++ b/drivers/regulator/pcf50633-regulator.c @@ -316,7 +316,7 @@ static int __init pcf50633_regulator_init(void) { return platform_driver_register(&pcf50633_regulator_driver); } -module_init(pcf50633_regulator_init); +subsys_initcall(pcf50633_regulator_init); static void __exit pcf50633_regulator_exit(void) { diff --git a/drivers/regulator/userspace-consumer.c b/drivers/regulator/userspace-consumer.c new file mode 100644 index 000000000000..06d2fa96a8b4 --- /dev/null +++ b/drivers/regulator/userspace-consumer.c @@ -0,0 +1,200 @@ +/* + * userspace-consumer.c + * + * Copyright 2009 CompuLab, Ltd. + * + * Author: Mike Rapoport <mike@compulab.co.il> + * + * Based of virtual consumer driver: + * Copyright 2008 Wolfson Microelectronics PLC. + * Author: Mark Brown <broonie@opensource.wolfsonmicro.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. + * + */ + +#include <linux/err.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/regulator/userspace-consumer.h> + +struct userspace_consumer_data { + const char *name; + + struct mutex lock; + bool enabled; + + int num_supplies; + struct regulator_bulk_data *supplies; +}; + +static ssize_t reg_show_name(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct userspace_consumer_data *data = dev_get_drvdata(dev); + + return sprintf(buf, "%s\n", data->name); +} + +static ssize_t reg_show_state(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct userspace_consumer_data *data = dev_get_drvdata(dev); + + if (data->enabled) + return sprintf(buf, "enabled\n"); + + return sprintf(buf, "disabled\n"); +} + +static ssize_t reg_set_state(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct userspace_consumer_data *data = dev_get_drvdata(dev); + bool enabled; + int ret; + + /* + * sysfs_streq() doesn't need the \n's, but we add them so the strings + * will be shared with show_state(), above. + */ + if (sysfs_streq(buf, "enabled\n") || sysfs_streq(buf, "1")) + enabled = true; + else if (sysfs_streq(buf, "disabled\n") || sysfs_streq(buf, "0")) + enabled = false; + else { + dev_err(dev, "Configuring invalid mode\n"); + return count; + } + + mutex_lock(&data->lock); + if (enabled != data->enabled) { + if (enabled) + ret = regulator_bulk_enable(data->num_supplies, + data->supplies); + else + ret = regulator_bulk_disable(data->num_supplies, + data->supplies); + + if (ret == 0) + data->enabled = enabled; + else + dev_err(dev, "Failed to configure state: %d\n", ret); + } + mutex_unlock(&data->lock); + + return count; +} + +static DEVICE_ATTR(name, 0444, reg_show_name, NULL); +static DEVICE_ATTR(state, 0644, reg_show_state, reg_set_state); + +static struct device_attribute *attributes[] = { + &dev_attr_name, + &dev_attr_state, +}; + +static int regulator_userspace_consumer_probe(struct platform_device *pdev) +{ + struct regulator_userspace_consumer_data *pdata; + struct userspace_consumer_data *drvdata; + int ret, i; + + pdata = pdev->dev.platform_data; + if (!pdata) + return -EINVAL; + + drvdata = kzalloc(sizeof(struct userspace_consumer_data), GFP_KERNEL); + if (drvdata == NULL) + return -ENOMEM; + + drvdata->name = pdata->name; + drvdata->num_supplies = pdata->num_supplies; + drvdata->supplies = pdata->supplies; + + mutex_init(&drvdata->lock); + + ret = regulator_bulk_get(&pdev->dev, drvdata->num_supplies, + drvdata->supplies); + if (ret) { + dev_err(&pdev->dev, "Failed to get supplies: %d\n", ret); + goto err_alloc_supplies; + } + + for (i = 0; i < ARRAY_SIZE(attributes); i++) { + ret = device_create_file(&pdev->dev, attributes[i]); + if (ret != 0) + goto err_create_attrs; + } + + if (pdata->init_on) + ret = regulator_bulk_enable(drvdata->num_supplies, + drvdata->supplies); + + drvdata->enabled = pdata->init_on; + + if (ret) { + dev_err(&pdev->dev, "Failed to set initial state: %d\n", ret); + goto err_create_attrs; + } + + platform_set_drvdata(pdev, drvdata); + + return 0; + +err_create_attrs: + for (i = 0; i < ARRAY_SIZE(attributes); i++) + device_remove_file(&pdev->dev, attributes[i]); + + regulator_bulk_free(drvdata->num_supplies, drvdata->supplies); + +err_alloc_supplies: + kfree(drvdata); + return ret; +} + +static int regulator_userspace_consumer_remove(struct platform_device *pdev) +{ + struct userspace_consumer_data *data = platform_get_drvdata(pdev); + int i; + + for (i = 0; i < ARRAY_SIZE(attributes); i++) + device_remove_file(&pdev->dev, attributes[i]); + + if (data->enabled) + regulator_bulk_disable(data->num_supplies, data->supplies); + + regulator_bulk_free(data->num_supplies, data->supplies); + kfree(data); + + return 0; +} + +static struct platform_driver regulator_userspace_consumer_driver = { + .probe = regulator_userspace_consumer_probe, + .remove = regulator_userspace_consumer_remove, + .driver = { + .name = "reg-userspace-consumer", + }, +}; + + +static int __init regulator_userspace_consumer_init(void) +{ + return platform_driver_register(®ulator_userspace_consumer_driver); +} +module_init(regulator_userspace_consumer_init); + +static void __exit regulator_userspace_consumer_exit(void) +{ + platform_driver_unregister(®ulator_userspace_consumer_driver); +} +module_exit(regulator_userspace_consumer_exit); + +MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); +MODULE_DESCRIPTION("Userspace consumer for voltage and current regulators"); +MODULE_LICENSE("GPL"); diff --git a/drivers/regulator/virtual.c b/drivers/regulator/virtual.c index 71403fa3ffa1..e7db5664722e 100644 --- a/drivers/regulator/virtual.c +++ b/drivers/regulator/virtual.c @@ -347,3 +347,4 @@ module_exit(regulator_virtual_consumer_exit); MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); MODULE_DESCRIPTION("Virtual regulator consumer"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:reg-virt-consumer"); diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c index 771eca1066b5..17a00b0fafd1 100644 --- a/drivers/regulator/wm8350-regulator.c +++ b/drivers/regulator/wm8350-regulator.c @@ -1570,3 +1570,4 @@ module_exit(wm8350_regulator_exit); MODULE_AUTHOR("Liam Girdwood"); MODULE_DESCRIPTION("WM8350 voltage and current regulator driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:wm8350-regulator"); diff --git a/drivers/regulator/wm8400-regulator.c b/drivers/regulator/wm8400-regulator.c index 157426029071..d9a2c988c6e7 100644 --- a/drivers/regulator/wm8400-regulator.c +++ b/drivers/regulator/wm8400-regulator.c @@ -320,7 +320,7 @@ static int __devinit wm8400_regulator_probe(struct platform_device *pdev) struct regulator_dev *rdev; rdev = regulator_register(®ulators[pdev->id], &pdev->dev, - pdev->dev.platform_data, pdev->dev.driver_data); + pdev->dev.platform_data, dev_get_drvdata(&pdev->dev)); if (IS_ERR(rdev)) return PTR_ERR(rdev); @@ -359,7 +359,7 @@ static struct platform_driver wm8400_regulator_driver = { int wm8400_register_regulator(struct device *dev, int reg, struct regulator_init_data *initdata) { - struct wm8400 *wm8400 = dev->driver_data; + struct wm8400 *wm8400 = dev_get_drvdata(dev); if (wm8400->regulators[reg].name) return -EBUSY; @@ -369,8 +369,8 @@ int wm8400_register_regulator(struct device *dev, int reg, wm8400->regulators[reg].name = "wm8400-regulator"; wm8400->regulators[reg].id = reg; wm8400->regulators[reg].dev.parent = dev; - wm8400->regulators[reg].dev.driver_data = wm8400; wm8400->regulators[reg].dev.platform_data = initdata; + dev_set_drvdata(&wm8400->regulators[reg].dev, wm8400); return platform_device_register(&wm8400->regulators[reg]); } @@ -380,7 +380,7 @@ static int __init wm8400_regulator_init(void) { return platform_driver_register(&wm8400_regulator_driver); } -module_init(wm8400_regulator_init); +subsys_initcall(wm8400_regulator_init); static void __exit wm8400_regulator_exit(void) { |