diff options
| -rw-r--r-- | drivers/regulator/Kconfig | 15 | ||||
| -rw-r--r-- | drivers/regulator/Makefile | 5 | ||||
| -rw-r--r-- | drivers/regulator/core.c | 57 | ||||
| -rw-r--r-- | drivers/regulator/dummy.h | 4 | ||||
| -rw-r--r-- | drivers/regulator/lp3972.c | 660 | ||||
| -rw-r--r-- | drivers/regulator/max8952.c | 366 | ||||
| -rw-r--r-- | include/linux/regulator/lp3972.h | 48 | ||||
| -rw-r--r-- | include/linux/regulator/machine.h | 5 | ||||
| -rw-r--r-- | include/linux/regulator/max8952.h | 135 |
9 files changed, 1280 insertions, 15 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 172951b..dd30e88 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -100,6 +100,14 @@ config REGULATOR_MAX8925 help Say y here to support the voltage regulaltor of Maxim MAX8925 PMIC. +config REGULATOR_MAX8952 + tristate "Maxim MAX8952 Power Management IC" + depends on I2C + help + This driver controls a Maxim 8952 voltage output regulator + via I2C bus. Maxim 8952 has one voltage output and supports 4 DVS + modes ranging from 0.77V to 1.40V by 0.01V steps. + config REGULATOR_MAX8998 tristate "Maxim 8998 voltage regulator" depends on MFD_MAX8998 @@ -164,6 +172,13 @@ config REGULATOR_LP3971 Say Y here to support the voltage regulators and convertors on National Semiconductors LP3971 PMIC +config REGULATOR_LP3972 + tristate "National Semiconductors LP3972 PMIC regulator driver" + depends on I2C + help + Say Y here to support the voltage regulators and convertors + on National Semiconductors LP3972 PMIC + config REGULATOR_PCAP tristate "PCAP2 regulator driver" depends on EZX_PCAP diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 8285fd8..bff8157 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -3,20 +3,21 @@ # -obj-$(CONFIG_REGULATOR) += core.o +obj-$(CONFIG_REGULATOR) += core.o dummy.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_AD5398) += ad5398.o obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o -obj-$(CONFIG_REGULATOR_DUMMY) += dummy.o obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o +obj-$(CONFIG_REGULATOR_LP3972) += lp3972.o obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o obj-$(CONFIG_REGULATOR_MAX8649) += max8649.o obj-$(CONFIG_REGULATOR_MAX8660) += max8660.o obj-$(CONFIG_REGULATOR_MAX8925) += max8925-regulator.o +obj-$(CONFIG_REGULATOR_MAX8952) += max8952.o obj-$(CONFIG_REGULATOR_MAX8998) += max8998.o obj-$(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 cc8b337..f1d10c9 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -33,6 +33,7 @@ static DEFINE_MUTEX(regulator_list_mutex); static LIST_HEAD(regulator_list); static LIST_HEAD(regulator_map_list); static int has_full_constraints; +static bool board_wants_dummy_regulator; /* * struct regulator_map @@ -63,7 +64,8 @@ struct regulator { }; static int _regulator_is_enabled(struct regulator_dev *rdev); -static int _regulator_disable(struct regulator_dev *rdev); +static int _regulator_disable(struct regulator_dev *rdev, + struct regulator_dev **supply_rdev_ptr); static int _regulator_get_voltage(struct regulator_dev *rdev); static int _regulator_get_current_limit(struct regulator_dev *rdev); static unsigned int _regulator_get_mode(struct regulator_dev *rdev); @@ -1108,6 +1110,11 @@ static struct regulator *_regulator_get(struct device *dev, const char *id, } } + if (board_wants_dummy_regulator) { + rdev = dummy_regulator_rdev; + goto found; + } + #ifdef CONFIG_REGULATOR_DUMMY if (!devname) devname = "deviceless"; @@ -1348,7 +1355,8 @@ int regulator_enable(struct regulator *regulator) EXPORT_SYMBOL_GPL(regulator_enable); /* locks held by regulator_disable() */ -static int _regulator_disable(struct regulator_dev *rdev) +static int _regulator_disable(struct regulator_dev *rdev, + struct regulator_dev **supply_rdev_ptr) { int ret = 0; @@ -1376,8 +1384,7 @@ static int _regulator_disable(struct regulator_dev *rdev) } /* decrease our supplies ref count and disable if required */ - if (rdev->supply) - _regulator_disable(rdev->supply); + *supply_rdev_ptr = rdev->supply; rdev->use_count = 0; } else if (rdev->use_count > 1) { @@ -1407,17 +1414,29 @@ static int _regulator_disable(struct regulator_dev *rdev) int regulator_disable(struct regulator *regulator) { struct regulator_dev *rdev = regulator->rdev; + struct regulator_dev *supply_rdev = NULL; int ret = 0; mutex_lock(&rdev->mutex); - ret = _regulator_disable(rdev); + ret = _regulator_disable(rdev, &supply_rdev); mutex_unlock(&rdev->mutex); + + /* decrease our supplies ref count and disable if required */ + while (supply_rdev != NULL) { + rdev = supply_rdev; + + mutex_lock(&rdev->mutex); + _regulator_disable(rdev, &supply_rdev); + mutex_unlock(&rdev->mutex); + } + return ret; } EXPORT_SYMBOL_GPL(regulator_disable); /* locks held by regulator_force_disable() */ -static int _regulator_force_disable(struct regulator_dev *rdev) +static int _regulator_force_disable(struct regulator_dev *rdev, + struct regulator_dev **supply_rdev_ptr) { int ret = 0; @@ -1436,8 +1455,7 @@ static int _regulator_force_disable(struct regulator_dev *rdev) } /* decrease our supplies ref count and disable if required */ - if (rdev->supply) - _regulator_disable(rdev->supply); + *supply_rdev_ptr = rdev->supply; rdev->use_count = 0; return ret; @@ -1454,12 +1472,17 @@ static int _regulator_force_disable(struct regulator_dev *rdev) */ int regulator_force_disable(struct regulator *regulator) { + struct regulator_dev *supply_rdev = NULL; int ret; mutex_lock(®ulator->rdev->mutex); regulator->uA_load = 0; - ret = _regulator_force_disable(regulator->rdev); + ret = _regulator_force_disable(regulator->rdev, &supply_rdev); mutex_unlock(®ulator->rdev->mutex); + + if (supply_rdev) + regulator_disable(get_device_regulator(rdev_get_dev(supply_rdev))); + return ret; } EXPORT_SYMBOL_GPL(regulator_force_disable); @@ -2463,6 +2486,22 @@ void regulator_has_full_constraints(void) EXPORT_SYMBOL_GPL(regulator_has_full_constraints); /** + * regulator_use_dummy_regulator - Provide a dummy regulator when none is found + * + * Calling this function will cause the regulator API to provide a + * dummy regulator to consumers if no physical regulator is found, + * allowing most consumers to proceed as though a regulator were + * configured. This allows systems such as those with software + * controllable regulators for the CPU core only to be brought up more + * readily. + */ +void regulator_use_dummy_regulator(void) +{ + board_wants_dummy_regulator = true; +} +EXPORT_SYMBOL_GPL(regulator_use_dummy_regulator); + +/** * rdev_get_drvdata - get rdev regulator driver data * @rdev: regulator * diff --git a/drivers/regulator/dummy.h b/drivers/regulator/dummy.h index 3921c0e..97a11b7 100644 --- a/drivers/regulator/dummy.h +++ b/drivers/regulator/dummy.h @@ -22,10 +22,6 @@ struct regulator_dev; extern struct regulator_dev *dummy_regulator_rdev; -#ifdef CONFIG_REGULATOR_DUMMY void __init regulator_dummy_init(void); -#else -static inline void regulator_dummy_init(void) { } -#endif #endif diff --git a/drivers/regulator/lp3972.c b/drivers/regulator/lp3972.c new file mode 100644 index 0000000..e07062f --- /dev/null +++ b/drivers/regulator/lp3972.c @@ -0,0 +1,660 @@ +/* + * Regulator driver for National Semiconductors LP3972 PMIC chip + * + * Based on lp3971.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/lp3972.h> +#include <linux/slab.h> + +struct lp3972 { + struct device *dev; + struct mutex io_lock; + struct i2c_client *i2c; + int num_regulators; + struct regulator_dev **rdev; +}; + +/* LP3972 Control Registers */ +#define LP3972_SCR_REG 0x07 +#define LP3972_OVER1_REG 0x10 +#define LP3972_OVSR1_REG 0x11 +#define LP3972_OVER2_REG 0x12 +#define LP3972_OVSR2_REG 0x13 +#define LP3972_VCC1_REG 0x20 +#define LP3972_ADTV1_REG 0x23 +#define LP3972_ADTV2_REG 0x24 +#define LP3972_AVRC_REG 0x25 +#define LP3972_CDTC1_REG 0x26 +#define LP3972_CDTC2_REG 0x27 +#define LP3972_SDTV1_REG 0x29 +#define LP3972_SDTV2_REG 0x2A +#define LP3972_MDTV1_REG 0x32 +#define LP3972_MDTV2_REG 0x33 +#define LP3972_L2VCR_REG 0x39 +#define LP3972_L34VCR_REG 0x3A +#define LP3972_SCR1_REG 0x80 +#define LP3972_SCR2_REG 0x81 +#define LP3972_OEN3_REG 0x82 +#define LP3972_OSR3_REG 0x83 +#define LP3972_LOER4_REG 0x84 +#define LP3972_B2TV_REG 0x85 +#define LP3972_B3TV_REG 0x86 +#define LP3972_B32RC_REG 0x87 +#define LP3972_ISRA_REG 0x88 +#define LP3972_BCCR_REG 0x89 +#define LP3972_II1RR_REG 0x8E +#define LP3972_II2RR_REG 0x8F + +#define LP3972_SYS_CONTROL1_REG LP3972_SCR1_REG +/* System control register 1 initial value, + * bits 5, 6 and 7 are EPROM programmable */ +#define SYS_CONTROL1_INIT_VAL 0x02 +#define SYS_CONTROL1_INIT_MASK 0x1F + +#define LP3972_VOL_CHANGE_REG LP3972_VCC1_REG +#define LP3972_VOL_CHANGE_FLAG_GO 0x01 +#define LP3972_VOL_CHANGE_FLAG_MASK 0x03 + +/* LDO output enable mask */ +#define LP3972_OEN3_L1EN BIT(0) +#define LP3972_OVER2_LDO2_EN BIT(2) +#define LP3972_OVER2_LDO3_EN BIT(3) +#define LP3972_OVER2_LDO4_EN BIT(4) +#define LP3972_OVER1_S_EN BIT(2) + +static const int ldo1_voltage_map[] = { + 1700, 1725, 1750, 1775, 1800, 1825, 1850, 1875, + 1900, 1925, 1950, 1975, 2000, +}; + +static const int ldo23_voltage_map[] = { + 1800, 1900, 2000, 2100, 2200, 2300, 2400, 2500, + 2600, 2700, 2800, 2900, 3000, 3100, 3200, 3300, +}; + +static const int ldo4_voltage_map[] = { + 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, + 1400, 1500, 1800, 1900, 2500, 2800, 3000, 3300, +}; + +static const int ldo5_voltage_map[] = { + 0, 0, 0, 0, 0, 850, 875, 900, + 925, 950, 975, 1000, 1025, 1050, 1075, 1100, + 1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300, + 1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500, +}; + +static const int buck1_voltage_map[] = { + 725, 750, 775, 800, 825, 850, 875, 900, + 925, 950, 975, 1000, 1025, 1050, 1075, 1100, + 1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300, + 1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500, +}; + +static const int buck23_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, +}; + +static const int *ldo_voltage_map[] = { + ldo1_voltage_map, + ldo23_voltage_map, + ldo23_voltage_map, + ldo4_voltage_map, + ldo5_voltage_map, +}; + +static const int *buck_voltage_map[] = { + buck1_voltage_map, + buck23_voltage_map, + buck23_voltage_map, +}; + +static const int ldo_output_enable_mask[] = { + LP3972_OEN3_L1EN, + LP3972_OVER2_LDO2_EN, + LP3972_OVER2_LDO3_EN, + LP3972_OVER2_LDO4_EN, + LP3972_OVER1_S_EN, +}; + +static const int ldo_output_enable_addr[] = { + LP3972_OEN3_REG, + LP3972_OVER2_REG, + LP3972_OVER2_REG, + LP3972_OVER2_REG, + LP3972_OVER1_REG, +}; + +static const int ldo_vol_ctl_addr[] = { + LP3972_MDTV1_REG, + LP3972_L2VCR_REG, + LP3972_L34VCR_REG, + LP3972_L34VCR_REG, + LP3972_SDTV1_REG, +}; + +static const int buck_vol_enable_addr[] = { + LP3972_OVER1_REG, + LP3972_OEN3_REG, + LP3972_OEN3_REG, +}; + +static const int buck_base_addr[] = { + LP3972_ADTV1_REG, + LP3972_B2TV_REG, + LP3972_B3TV_REG, +}; + +#define LP3972_LDO_VOL_VALUE_MAP(x) (ldo_voltage_map[x]) +#define LP3972_LDO_OUTPUT_ENABLE_MASK(x) (ldo_output_enable_mask[x]) +#define LP3972_LDO_OUTPUT_ENABLE_REG(x) (ldo_output_enable_addr[x]) + +/* LDO voltage control registers shift: + LP3972_LDO1 -> 0, LP3972_LDO2 -> 4 + LP3972_LDO3 -> 0, LP3972_LDO4 -> 4 + LP3972_LDO5 -> 0 +*/ +#define LP3972_LDO_VOL_CONTR_SHIFT(x) (((x) & 1) << 2) +#define LP3972_LDO_VOL_CONTR_REG(x) (ldo_vol_ctl_addr[x]) +#define LP3972_LDO_VOL_CHANGE_SHIFT(x) ((x) ? 4 : 6) + +#define LP3972_LDO_VOL_MASK(x) (((x) % 4) ? 0x0f : 0x1f) +#define LP3972_LDO_VOL_MIN_IDX(x) (((x) == 4) ? 0x05 : 0x00) +#define LP3972_LDO_VOL_MAX_IDX(x) ((x) ? (((x) == 4) ? 0x1f : 0x0f) : 0x0c) + +#define LP3972_BUCK_VOL_VALUE_MAP(x) (buck_voltage_map[x]) +#define LP3972_BUCK_VOL_ENABLE_REG(x) (buck_vol_enable_addr[x]) +#define LP3972_BUCK_VOL1_REG(x) (buck_base_addr[x]) +#define LP3972_BUCK_VOL_MASK 0x1f +#define LP3972_BUCK_VOL_MIN_IDX(x) ((x) ? 0x01 : 0x00) +#define LP3972_BUCK_VOL_MAX_IDX(x) ((x) ? 0x19 : 0x1f) + +static int lp3972_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) + return ret; + + *dest = ret; + return 0; +} + +static int lp3972_i2c_write(struct i2c_client *i2c, char reg, int count, + const u16 *src) +{ + if (count != 1) + return -EIO; + return i2c_smbus_write_byte_data(i2c, reg, *src); +} + +static u8 lp3972_reg_read(struct lp3972 *lp3972, u8 reg) +{ + u16 val = 0; + + mutex_lock(&lp3972->io_lock); + + lp3972_i2c_read(lp3972->i2c, reg, 1, &val); + + dev_dbg(lp3972->dev, "reg read 0x%02x -> 0x%02x\n", (int)reg, + (unsigned)val & 0xff); + + mutex_unlock(&lp3972->io_lock); + + return val & 0xff; +} + +static int lp3972_set_bits(struct lp3972 *lp3972, u8 reg, u16 mask, u16 val) +{ + u16 tmp; + int ret; + + mutex_lock(&lp3972->io_lock); + + ret = lp3972_i2c_read(lp3972->i2c, reg, 1, &tmp); + tmp = (tmp & ~mask) | val; + if (ret == 0) { + ret = lp3972_i2c_write(lp3972->i2c, reg, 1, &tmp); + dev_dbg(lp3972->dev, "reg write 0x%02x -> 0x%02x\n", (int)reg, + (unsigned)val & 0xff); + } + mutex_unlock(&lp3972->io_lock); + + return ret; +} + +static int lp3972_ldo_list_voltage(struct regulator_dev *dev, unsigned index) +{ + int ldo = rdev_get_id(dev) - LP3972_LDO1; + return 1000 * LP3972_LDO_VOL_VALUE_MAP(ldo)[index]; +} + +static int lp3972_ldo_is_enabled(struct regulator_dev *dev) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3972_LDO1; + u16 mask = LP3972_LDO_OUTPUT_ENABLE_MASK(ldo); + u16 val; + + val = lp3972_reg_read(lp3972, LP3972_LDO_OUTPUT_ENABLE_REG(ldo)); + return !!(val & mask); +} + +static int lp3972_ldo_enable(struct regulator_dev *dev) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3972_LDO1; + u16 mask = LP3972_LDO_OUTPUT_ENABLE_MASK(ldo); + + return lp3972_set_bits(lp3972, LP3972_LDO_OUTPUT_ENABLE_REG(ldo), + mask, mask); +} + +static int lp3972_ldo_disable(struct regulator_dev *dev) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3972_LDO1; + u16 mask = LP3972_LDO_OUTPUT_ENABLE_MASK(ldo); + + return lp3972_set_bits(lp3972, LP3972_LDO_OUTPUT_ENABLE_REG(ldo), + mask, 0); +} + +static int lp3972_ldo_get_voltage(struct regulator_dev *dev) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3972_LDO1; + u16 mask = LP3972_LDO_VOL_MASK(ldo); + u16 val, reg; + + reg = lp3972_reg_read(lp3972, LP3972_LDO_VOL_CONTR_REG(ldo)); + val = (reg >> LP3972_LDO_VOL_CONTR_SHIFT(ldo)) & mask; + + return 1000 * LP3972_LDO_VOL_VALUE_MAP(ldo)[val]; +} + +static int lp3972_ldo_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev) - LP3972_LDO1; + int min_vol = min_uV / 1000, max_vol = max_uV / 1000; + const int *vol_map = LP3972_LDO_VOL_VALUE_MAP(ldo); + u16 val; + int shift, ret; + + if (min_vol < vol_map[LP3972_LDO_VOL_MIN_IDX(ldo)] || + min_vol > vol_map[LP3972_LDO_VOL_MAX_IDX(ldo)]) + return -EINVAL; + + for (val = LP3972_LDO_VOL_MIN_IDX(ldo); + val <= LP3972_LDO_VOL_MAX_IDX(ldo); val++) + if (vol_map[val] >= min_vol) + break; + + if (val > LP3972_LDO_VOL_MAX_IDX(ldo) || vol_map[val] > max_vol) + return -EINVAL; + + shift = LP3972_LDO_VOL_CONTR_SHIFT(ldo); + ret = lp3972_set_bits(lp3972, LP3972_LDO_VOL_CONTR_REG(ldo), + LP3972_LDO_VOL_MASK(ldo) << shift, val << shift); + + if (ret) + return ret; + + /* + * LDO1 and LDO5 support voltage control by either target voltage1 + * or target voltage2 register. + * We use target voltage1 register for LDO1 and LDO5 in this driver. + * We need to update voltage change control register(0x20) to enable + * LDO1 and LDO5 to change to their programmed target values. + */ + switch (ldo) { + case LP3972_LDO1: + case LP3972_LDO5: + shift = LP3972_LDO_VOL_CHANGE_SHIFT(ldo); + ret = lp3972_set_bits(lp3972, LP3972_VOL_CHANGE_REG, + LP3972_VOL_CHANGE_FLAG_MASK << shift, + LP3972_VOL_CHANGE_FLAG_GO << shift); + if (ret) + return ret; + + ret = lp3972_set_bits(lp3972, LP3972_VOL_CHANGE_REG, + LP3972_VOL_CHANGE_FLAG_MASK << shift, 0); + break; + } + + return ret; +} + +static struct regulator_ops lp3972_ldo_ops = { + .list_voltage = lp3972_ldo_list_voltage, + .is_enabled = lp3972_ldo_is_enabled, + .enable = lp3972_ldo_enable, + .disable = lp3972_ldo_disable, + .get_voltage = lp3972_ldo_get_voltage, + .set_voltage = lp3972_ldo_set_voltage, +}; + +static int lp3972_dcdc_list_voltage(struct regulator_dev *dev, unsigned index) +{ + int buck = rdev_get_id(dev) - LP3972_DCDC1; + return 1000 * buck_voltage_map[buck][index]; +} + +static int lp3972_dcdc_is_enabled(struct regulator_dev *dev) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3972_DCDC1; + u16 mask = 1 << (buck * 2); + u16 val; + + val = lp3972_reg_read(lp3972, LP3972_BUCK_VOL_ENABLE_REG(buck)); + return !!(val & mask); +} + +static int lp3972_dcdc_enable(struct regulator_dev *dev) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3972_DCDC1; + u16 mask = 1 << (buck * 2); + u16 val; + + val = lp3972_set_bits(lp3972, LP3972_BUCK_VOL_ENABLE_REG(buck), + mask, mask); + return val; +} + +static int lp3972_dcdc_disable(struct regulator_dev *dev) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3972_DCDC1; + u16 mask = 1 << (buck * 2); + u16 val; + + val = lp3972_set_bits(lp3972, LP3972_BUCK_VOL_ENABLE_REG(buck), + mask, 0); + return val; +} + +static int lp3972_dcdc_get_voltage(struct regulator_dev *dev) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3972_DCDC1; + u16 reg; + int val; + + reg = lp3972_reg_read(lp3972, LP3972_BUCK_VOL1_REG(buck)); + reg &= LP3972_BUCK_VOL_MASK; + if (reg <= LP3972_BUCK_VOL_MAX_IDX(buck)) + val = 1000 * buck_voltage_map[buck][reg]; + else { + val = 0; + dev_warn(&dev->dev, "chip reported incorrect voltage value." + " reg = %d\n", reg); + } + + return val; +} + +static int lp3972_dcdc_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV) +{ + struct lp3972 *lp3972 = rdev_get_drvdata(dev); + int buck = rdev_get_id(dev) - LP3972_DCDC1; + int min_vol = min_uV / 1000, max_vol = max_uV / 1000; + const int *vol_map = buck_voltage_map[buck]; + u16 val; + int ret; + + if (min_vol < vol_map[LP3972_BUCK_VOL_MIN_IDX(buck)] || + min_vol > vol_map[LP3972_BUCK_VOL_MAX_IDX(buck)]) + return -EINVAL; + + for (val = LP3972_BUCK_VOL_MIN_IDX(buck); + val <= LP3972_BUCK_VOL_MAX_IDX(buck); val++) + if (vol_map[val] >= min_vol) + break; + + if (val > LP3972_BUCK_VOL_MAX_IDX(buck) || + vol_map[val] > max_vol) + return -EINVAL; + + ret = lp3972_set_bits(lp3972, LP3972_BUCK_VOL1_REG(buck), + LP3972_BUCK_VOL_MASK, val); + if (ret) + return ret; + + if (buck != 0) + return ret; + + ret = lp3972_set_bits(lp3972, LP3972_VOL_CHANGE_REG, + LP3972_VOL_CHANGE_FLAG_MASK, LP3972_VOL_CHANGE_FLAG_GO); + if (ret) + return ret; + + return lp3972_set_bits(lp3972, LP3972_VOL_CHANGE_REG, + LP3972_VOL_CHANGE_FLAG_MASK, 0); +} + +static struct regulator_ops lp3972_dcdc_ops = { + .list_voltage = lp3972_dcdc_list_voltage, + .is_enabled = lp3972_dcdc_is_enabled, + .enable = lp3972_dcdc_enable, + .disable = lp3972_dcdc_disable, + .get_voltage = lp3972_dcdc_get_voltage, + .set_voltage = lp3972_dcdc_set_voltage, +}; + +static struct regulator_desc regulators[] = { + { + .name = "LDO1", + .id = LP3972_LDO1, + .ops = &lp3972_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo1_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "LDO2", + .id = LP3972_LDO2, + .ops = &lp3972_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo23_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "LDO3", + .id = LP3972_LDO3, + .ops = &lp3972_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo23_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "LDO4", + .id = LP3972_LDO4, + .ops = &lp3972_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo4_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "LDO5", + .id = LP3972_LDO5, + .ops = &lp3972_ldo_ops, + .n_voltages = ARRAY_SIZE(ldo5_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "DCDC1", + .id = LP3972_DCDC1, + .ops = &lp3972_dcdc_ops, + .n_voltages = ARRAY_SIZE(buck1_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "DCDC2", + .id = LP3972_DCDC2, + .ops = &lp3972_dcdc_ops, + .n_voltages = ARRAY_SIZE(buck23_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, + { + .name = "DCDC3", + .id = LP3972_DCDC3, + .ops = &lp3972_dcdc_ops, + .n_voltages = ARRAY_SIZE(buck23_voltage_map), + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + }, +}; + +static int __devinit setup_regulators(struct lp3972 *lp3972, + struct lp3972_platform_data *pdata) +{ + int i, err; + + lp3972->num_regulators = pdata->num_regulators; + lp3972->rdev = kcalloc(pdata->num_regulators, + sizeof(struct regulator_dev *), GFP_KERNEL); + if (!lp3972->rdev) { + err = -ENOMEM; + goto err_nomem; + } + + /* Instantiate the regulators */ + for (i = 0; i < pdata->num_regulators; i++) { + struct lp3972_regulator_subdev *reg = &pdata->regulators[i]; + lp3972->rdev[i] = regulator_register(®ulators[reg->id], + lp3972->dev, reg->initdata, lp3972); + + if (IS_ERR(lp3972->rdev[i])) { + err = PTR_ERR(lp3972->rdev[i]); + dev_err(lp3972->dev, "regulator init failed: %d\n", + err); + goto error; + } + } + + return 0; +error: + while (--i >= 0) + regulator_unregister(lp3972->rdev[i]); + kfree(lp3972->rdev); + lp3972->rdev = NULL; +err_nomem: + return err; +} + +static int __devinit lp3972_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct lp3972 *lp3972; + struct lp3972_platform_data *pdata = i2c->dev.platform_data; + int ret; + u16 val; + + if (!pdata) { + dev_dbg(&i2c->dev, "No platform init data supplied\n"); + return -ENODEV; + } + + lp3972 = kzalloc(sizeof(struct lp3972), GFP_KERNEL); + if (!lp3972) + return -ENOMEM; + + lp3972->i2c = i2c; + lp3972->dev = &i2c->dev; + + mutex_init(&lp3972->io_lock); + + /* Detect LP3972 */ + ret = lp3972_i2c_read(i2c, LP3972_SYS_CONTROL1_REG, 1, &val); + if (ret == 0 && + (val & SYS_CONTROL1_INIT_MASK) != SYS_CONTROL1_INIT_VAL) { + ret = -ENODEV; + dev_err(&i2c->dev, "chip reported: val = 0x%x\n", val); + } + if (ret < 0) { + dev_err(&i2c->dev, "failed to detect device. ret = %d\n", ret); + goto err_detect; + } + + ret = setup_regulators(lp3972, pdata); + if (ret < 0) + goto err_detect; + + i2c_set_clientdata(i2c, lp3972); + return 0; + +err_detect: + kfree(lp3972); + return ret; +} + +static int __devexit lp3972_i2c_remove(struct i2c_client *i2c) +{ + struct lp3972 *lp3972 = i2c_get_clientdata(i2c); + int i; + + for (i = 0; i < lp3972->num_regulators; i++) + regulator_unregister(lp3972->rdev[i]); + kfree(lp3972->rdev); + kfree(lp3972); + + return 0; +} + +static const struct i2c_device_id lp3972_i2c_id[] = { + { "lp3972", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, lp3972_i2c_id); + +static struct i2c_driver lp3972_i2c_driver = { + .driver = { + .name = "lp3972", + .owner = THIS_MODULE, + }, + .probe = lp3972_i2c_probe, + .remove = __devexit_p(lp3972_i2c_remove), + .id_table = lp3972_i2c_id, +}; + +static int __init lp3972_module_init(void) +{ + return i2c_add_driver(&lp3972_i2c_driver); +} +subsys_initcall(lp3972_module_init); + +static void __exit lp3972_module_exit(void) +{ + i2c_del_driver(&lp3972_i2c_driver); +} +module_exit(lp3972_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Axel Lin <axel.lin@gmail.com>"); +MODULE_DESCRIPTION("LP3972 PMIC driver"); diff --git a/drivers/regulator/max8952.c b/drivers/regulator/max8952.c new file mode 100644 index 0000000..0d5dda4 --- /dev/null +++ b/drivers/regulator/max8952.c @@ -0,0 +1,366 @@ +/* + * max8952.c - Voltage and current regulation for the Maxim 8952 + * + * Copyright (C) 2010 Samsung Electronics + * MyungJoo Ham <myungjoo.ham@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed 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/init.h> +#include <linux/i2c.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/max8952.h> +#include <linux/mutex.h> +#include <linux/gpio.h> +#include <linux/io.h> +#include <linux/slab.h> + +/* Registers */ +enum { + MAX8952_REG_MODE0, + MAX8952_REG_MODE1, + MAX8952_REG_MODE2, + MAX8952_REG_MODE3, + MAX8952_REG_CONTROL, + MAX8952_REG_SYNC, + MAX8952_REG_RAMP, + MAX8952_REG_CHIP_ID1, + MAX8952_REG_CHIP_ID2, +}; + +struct max8952_data { + struct i2c_client *client; + struct device *dev; + struct mutex mutex; + struct max8952_platform_data *pdata; + struct regulator_dev *rdev; + + bool vid0; + bool vid1; + bool en; +}; + +static int max8952_read_reg(struct max8952_data *max8952, u8 reg) +{ + int ret = i2c_smbus_read_byte_data(max8952->client, reg); + if (ret > 0) + ret &= 0xff; + + return ret; +} + +static int max8952_write_reg(struct max8952_data *max8952, + u8 reg, u8 value) +{ + return i2c_smbus_write_byte_data(max8952->client, reg, value); +} + +static int max8952_voltage(struct max8952_data *max8952, u8 mode) +{ + return (max8952->pdata->dvs_mode[mode] * 10 + 770) * 1000; +} + +static int max8952_list_voltage(struct regulator_dev *rdev, + unsigned int selector) +{ + struct max8952_data *max8952 = rdev_get_drvdata(rdev); + + if (rdev_get_id(rdev) != 0) + return -EINVAL; + + return max8952_voltage(max8952, selector); +} + +static int max8952_is_enabled(struct regulator_dev *rdev) +{ + struct max8952_data *max8952 = rdev_get_drvdata(rdev); + return max8952->en; +} + +static int max8952_enable(struct regulator_dev *rdev) +{ + struct max8952_data *max8952 = rdev_get_drvdata(rdev); + + /* If not valid, assume "ALWAYS_HIGH" */ + if (gpio_is_valid(max8952->pdata->gpio_en)) + gpio_set_value(max8952->pdata->gpio_en, 1); + + max8952->en = true; + return 0; +} + +static int max8952_disable(struct regulator_dev *rdev) +{ + struct max8952_data *max8952 = rdev_get_drvdata(rdev); + + /* If not valid, assume "ALWAYS_HIGH" -> not permitted */ + if (gpio_is_valid(max8952->pdata->gpio_en)) + gpio_set_value(max8952->pdata->gpio_en, 0); + else + return -EPERM; + + max8952->en = false; + return 0; +} + +static int max8952_get_voltage(struct regulator_dev *rdev) +{ + struct max8952_data *max8952 = rdev_get_drvdata(rdev); + u8 vid = 0; + + if (max8952->vid0) + vid += 1; + if (max8952->vid1) + vid += 2; + + return max8952_voltage(max8952, vid); +} + +static int max8952_set_voltage(struct regulator_dev *rdev, + int min_uV, int max_uV) +{ + struct max8952_data *max8952 = rdev_get_drvdata(rdev); + s8 vid = -1, i; + + if (!gpio_is_valid(max8952->pdata->gpio_vid0) || + !gpio_is_valid(max8952->pdata->gpio_vid0)) { + /* DVS not supported */ + return -EPERM; + } + + for (i = 0; i < MAX8952_NUM_DVS_MODE; i++) { + int volt = max8952_voltage(max8952, i); + + /* Set the voltage as low as possible within the range */ + if (volt <= max_uV && volt >= min_uV) + if (vid == -1 || max8952_voltage(max8952, vid) > volt) + vid = i; + } + + if (vid >= 0 && vid < MAX8952_NUM_DVS_MODE) { + max8952->vid0 = (vid % 2 == 1); + max8952->vid1 = (((vid >> 1) % 2) == 1); + gpio_set_value(max8952->pdata->gpio_vid0, max8952->vid0); + gpio_set_value(max8952->pdata->gpio_vid1, max8952->vid1); + } else + return -EINVAL; + + return 0; +} + +static struct regulator_ops max8952_ops = { + .list_voltage = max8952_list_voltage, + .is_enabled = max8952_is_enabled, + .enable = max8952_enable, + .disable = max8952_disable, + .get_voltage = max8952_get_voltage, + .set_voltage = max8952_set_voltage, + .set_suspend_disable = max8952_disable, +}; + +static struct regulator_desc regulator = { + .name = "MAX8952_VOUT", + .id = 0, + .n_voltages = MAX8952_NUM_DVS_MODE, + .ops = &max8952_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, +}; + +static int __devinit max8952_pmic_probe(struct i2c_client *client, + const struct i2c_device_id *i2c_id) +{ + struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); + struct max8952_platform_data *pdata = client->dev.platform_data; + struct max8952_data *max8952; + + int ret = 0, err = 0; + + if (!pdata) { + dev_err(&client->dev, "Require the platform data\n"); + return -EINVAL; + } + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE)) + return -EIO; + + max8952 = kzalloc(sizeof(struct max8952_data), GFP_KERNEL); + if (!max8952) + return -ENOMEM; + + max8952->client = client; + max8952->dev = &client->dev; + max8952->pdata = pdata; + mutex_init(&max8952->mutex); + + max8952->rdev = regulator_register(®ulator, max8952->dev, + &pdata->reg_data, max8952); + + if (IS_ERR(max8952->rdev)) { + ret = PTR_ERR(max8952->rdev); + dev_err(max8952->dev, "regulator init failed (%d)\n", ret); + goto err_reg; + } + + max8952->en = !!(pdata->reg_data.constraints.boot_on); + max8952->vid0 = (pdata->default_mode % 2) == 1; + max8952->vid1 = ((pdata->default_mode >> 1) % 2) == 1; + + if (gpio_is_valid(pdata->gpio_en)) { + if (!gpio_request(pdata->gpio_en, "MAX8952 EN")) + gpio_direction_output(pdata->gpio_en, max8952->en); + else + err = 1; + } else + err = 2; + + if (err) { + dev_info(max8952->dev, "EN gpio invalid: assume that EN" + "is always High\n"); + max8952->en = 1; + pdata->gpio_en = -1; /* Mark invalid */ + } + + err = 0; + + if (gpio_is_valid(pdata->gpio_vid0) && + gpio_is_valid(pdata->gpio_vid1)) { + if (!gpio_request(pdata->gpio_vid0, "MAX8952 VID0")) + gpio_direction_output(pdata->gpio_vid0, + (pdata->default_mode) % 2); + else + err = 1; + + if (!gpio_request(pdata->gpio_vid1, "MAX8952 VID1")) + gpio_direction_output(pdata->gpio_vid1, + (pdata->default_mode >> 1) % 2); + else { + if (!err) + gpio_free(pdata->gpio_vid0); + err = 2; + } + + } else + err = 3; + + if (err) { + dev_warn(max8952->dev, "VID0/1 gpio invalid: " + "DVS not avilable.\n"); + max8952->vid0 = 0; + max8952->vid1 = 0; + /* Mark invalid */ + pdata->gpio_vid0 = -1; + pdata->gpio_vid1 = -1; + + /* Disable Pulldown of EN only */ + max8952_write_reg(max8952, MAX8952_REG_CONTROL, 0x60); + + dev_err(max8952->dev, "DVS modes disabled because VID0 and VID1" + " do not have proper controls.\n"); + } else { + /* + * Disable Pulldown on EN, VID0, VID1 to reduce + * leakage current of MAX8952 assuming that MAX8952 + * is turned on (EN==1). Note that without having VID0/1 + * properly connected, turning pulldown off can be + * problematic. Thus, turn this off only when they are + * controllable by GPIO. + */ + max8952_write_reg(max8952, MAX8952_REG_CONTROL, 0x0); + } + + max8952_write_reg(max8952, MAX8952_REG_MODE0, + (max8952_read_reg(max8952, + MAX8952_REG_MODE0) & 0xC0) | + (pdata->dvs_mode[0] & 0x3F)); + max8952_write_reg(max8952, MAX8952_REG_MODE1, + (max8952_read_reg(max8952, + MAX8952_REG_MODE1) & 0xC0) | + (pdata->dvs_mode[1] & 0x3F)); + max8952_write_reg(max8952, MAX8952_REG_MODE2, + (max8952_read_reg(max8952, + MAX8952_REG_MODE2) & 0xC0) | + (pdata->dvs_mode[2] & 0x3F)); + max8952_write_reg(max8952, MAX8952_REG_MODE3, + (max8952_read_reg(max8952, + MAX8952_REG_MODE3) & 0xC0) | + (pdata->dvs_mode[3] & 0x3F)); + + max8952_write_reg(max8952, MAX8952_REG_SYNC, + (max8952_read_reg(max8952, MAX8952_REG_SYNC) & 0x3F) | + ((pdata->sync_freq & 0x3) << 6)); + max8952_write_reg(max8952, MAX8952_REG_RAMP, + (max8952_read_reg(max8952, MAX8952_REG_RAMP) & 0x1F) | + ((pdata->ramp_speed & 0x7) << 5)); + + i2c_set_clientdata(client, max8952); + + return 0; + +err_reg: + kfree(max8952); + return ret; +} + +static int __devexit max8952_pmic_remove(struct i2c_client *client) +{ + struct max8952_data *max8952 = i2c_get_clientdata(client); + struct max8952_platform_data *pdata = max8952->pdata; + struct regulator_dev *rdev = max8952->rdev; + + regulator_unregister(rdev); + + gpio_free(pdata->gpio_vid0); + gpio_free(pdata->gpio_vid1); + gpio_free(pdata->gpio_en); + + kfree(max8952); + return 0; +} + +static const struct i2c_device_id max8952_ids[] = { + { "max8952", 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, max8952_ids); + +static struct i2c_driver max8952_pmic_driver = { + .probe = max8952_pmic_probe, + .remove = __devexit_p(max8952_pmic_remove), + .driver = { + .name = "max8952", + }, + .id_table = max8952_ids, +}; + +static int __init max8952_pmic_init(void) +{ + return i2c_add_driver(&max8952_pmic_driver); +} +subsys_initcall(max8952_pmic_init); + +static void __exit max8952_pmic_exit(void) +{ + i2c_del_driver(&max8952_pmic_driver); +} +module_exit(max8952_pmic_exit); + +MODULE_DESCRIPTION("MAXIM 8952 voltage regulator driver"); +MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/regulator/lp3972.h b/include/linux/regulator/lp3972.h new file mode 100644 index 0000000..9bb7389 --- /dev/null +++ b/include/linux/regulator/lp3972.h @@ -0,0 +1,48 @@ +/* + * National Semiconductors LP3972 PMIC chip client interface + * + * Based on lp3971.h + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __LINUX_REGULATOR_LP3972_H +#define __LINUX_REGULATOR_LP3972_H + +#include <linux/regulator/machine.h> + +#define LP3972_LDO1 0 +#define LP3972_LDO2 1 +#define LP3972_LDO3 2 +#define LP3972_LDO4 3 +#define LP3972_LDO5 4 + +#define LP3972_DCDC1 5 +#define LP3972_DCDC2 6 +#define LP3972_DCDC3 7 + +#define LP3972_NUM_REGULATORS 8 + +struct lp3972_regulator_subdev { + int id; + struct regulator_init_data *initdata; +}; + +struct lp3972_platform_data { + int num_regulators; + struct lp3972_regulator_subdev *regulators; +}; + +#endif diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index e298028..761c745 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -189,10 +189,15 @@ int regulator_suspend_prepare(suspend_state_t state); #ifdef CONFIG_REGULATOR void regulator_has_full_constraints(void); +void regulator_use_dummy_regulator(void); #else static inline void regulator_has_full_constraints(void) { } + +static inline void regulator_use_dummy_regulator(void) +{ +} #endif #endif diff --git a/include/linux/regulator/max8952.h b/include/linux/regulator/max8952.h new file mode 100644 index 0000000..45e4285 --- /dev/null +++ b/include/linux/regulator/max8952.h @@ -0,0 +1,135 @@ +/* + * max8952.h - Voltage regulation for the Maxim 8952 + * + * Copyright (C) 2010 Samsung Electrnoics + * MyungJoo Ham <myungjoo.ham@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed 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 + */ + +#ifndef REGULATOR_MAX8952 +#define REGULATOR_MAX8952 + +#include <linux/regulator/machine.h> + +enum { + MAX8952_DVS_MODE0, + MAX8952_DVS_MODE1, + MAX8952_DVS_MODE2, + MAX8952_DVS_MODE3, +}; + +enum { + MAX8952_DVS_770mV = 0, + MAX8952_DVS_780mV, + MAX8952_DVS_790mV, + MAX8952_DVS_800mV, + MAX8952_DVS_810mV, + MAX8952_DVS_820mV, + MAX8952_DVS_830mV, + MAX8952_DVS_840mV, + MAX8952_DVS_850mV, + MAX8952_DVS_860mV, + MAX8952_DVS_870mV, + MAX8952_DVS_880mV, + MAX8952_DVS_890mV, + MAX8952_DVS_900mV, + MAX8952_DVS_910mV, + MAX8952_DVS_920mV, + MAX8952_DVS_930mV, + MAX8952_DVS_940mV, + MAX8952_DVS_950mV, + MAX8952_DVS_960mV, + MAX8952_DVS_970mV, + MAX8952_DVS_980mV, + MAX8952_DVS_990mV, + MAX8952_DVS_1000mV, + MAX8952_DVS_1010mV, + MAX8952_DVS_1020mV, + MAX8952_DVS_1030mV, + MAX8952_DVS_1040mV, + MAX8952_DVS_1050mV, + MAX8952_DVS_1060mV, + MAX8952_DVS_1070mV, + MAX8952_DVS_1080mV, + MAX8952_DVS_1090mV, + MAX8952_DVS_1100mV, + MAX8952_DVS_1110mV, + MAX8952_DVS_1120mV, + MAX8952_DVS_1130mV, + MAX8952_DVS_1140mV, + MAX8952_DVS_1150mV, + MAX8952_DVS_1160mV, + MAX8952_DVS_1170mV, + MAX8952_DVS_1180mV, + MAX8952_DVS_1190mV, + MAX8952_DVS_1200mV, + MAX8952_DVS_1210mV, + MAX8952_DVS_1220mV, + MAX8952_DVS_1230mV, + MAX8952_DVS_1240mV, + MAX8952_DVS_1250mV, + MAX8952_DVS_1260mV, + MAX8952_DVS_1270mV, + MAX8952_DVS_1280mV, + MAX8952_DVS_1290mV, + MAX8952_DVS_1300mV, + MAX8952_DVS_1310mV, + MAX8952_DVS_1320mV, + MAX8952_DVS_1330mV, + MAX8952_DVS_1340mV, + MAX8952_DVS_1350mV, + MAX8952_DVS_1360mV, + MAX8952_DVS_1370mV, + MAX8952_DVS_1380mV, + MAX8952_DVS_1390mV, + MAX8952_DVS_1400mV, +}; + +enum { + MAX8952_SYNC_FREQ_26MHZ, /* Default */ + MAX8952_SYNC_FREQ_13MHZ, + MAX8952_SYNC_FREQ_19_2MHZ, +}; + +enum { + MAX8952_RAMP_32mV_us = 0, /* Default */ + MAX8952_RAMP_16mV_us, + MAX8952_RAMP_8mV_us, + MAX8952_RAMP_4mV_us, + MAX8952_RAMP_2mV_us, + MAX8952_RAMP_1mV_us, + MAX8952_RAMP_0_5mV_us, + MAX8952_RAMP_0_25mV_us, +}; + +#define MAX8952_NUM_DVS_MODE 4 + +struct max8952_platform_data { + int gpio_vid0; + int gpio_vid1; + int gpio_en; + + u8 default_mode; + u8 dvs_mode[MAX8952_NUM_DVS_MODE]; /* MAX8952_DVS_MODEx_XXXXmV */ + + u8 sync_freq; + u8 ramp_speed; + + struct regulator_init_data reg_data; +}; + + +#endif /* REGULATOR_MAX8952 */ |
