diff options
Diffstat (limited to 'drivers/regulator/pcf50633-regulator.c')
| -rw-r--r-- | drivers/regulator/pcf50633-regulator.c | 176 |
1 files changed, 28 insertions, 148 deletions
diff --git a/drivers/regulator/pcf50633-regulator.c b/drivers/regulator/pcf50633-regulator.c index 092e5cb848a1..769272afff2a 100644 --- a/drivers/regulator/pcf50633-regulator.c +++ b/drivers/regulator/pcf50633-regulator.c @@ -24,12 +24,15 @@ #include <linux/mfd/pcf50633/core.h> #include <linux/mfd/pcf50633/pmic.h> -#define PCF50633_REGULATOR(_name, _id, _n) \ +#define PCF50633_REGULATOR(_name, _id, _min_uV, _uV_step, _min_sel, _n) \ { \ .name = _name, \ .id = PCF50633_REGULATOR_##_id, \ .ops = &pcf50633_regulator_ops, \ .n_voltages = _n, \ + .min_uV = _min_uV, \ + .uV_step = _uV_step, \ + .linear_min_sel = _min_sel, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .vsel_reg = PCF50633_REG_##_id##OUT, \ @@ -38,162 +41,39 @@ .enable_mask = PCF50633_REGULATOR_ON, \ } -/* Bits from voltage value */ -static u8 auto_voltage_bits(unsigned int millivolts) -{ - if (millivolts < 1800) - return 0x2f; - if (millivolts > 3800) - return 0xff; - - millivolts -= 625; - - return millivolts / 25; -} - -static u8 down_voltage_bits(unsigned int millivolts) -{ - if (millivolts < 625) - return 0; - else if (millivolts > 3000) - return 0xff; - - millivolts -= 625; - - return millivolts / 25; -} - -static u8 ldo_voltage_bits(unsigned int millivolts) -{ - if (millivolts < 900) - return 0; - else if (millivolts > 3600) - return 0x1f; - - millivolts -= 900; - return millivolts / 100; -} - -/* Obtain voltage value from bits */ -static unsigned int auto_voltage_value(u8 bits) -{ - /* AUTOOUT: 00000000 to 00101110 are reserved. - * Return 0 for bits in reserved range, which means this selector code - * can't be used on this system */ - if (bits < 0x2f) - return 0; - - return 625 + (bits * 25); -} - - -static unsigned int down_voltage_value(u8 bits) -{ - return 625 + (bits * 25); -} - - -static unsigned int ldo_voltage_value(u8 bits) -{ - bits &= 0x1f; - - return 900 + (bits * 100); -} - -static int pcf50633_regulator_map_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) -{ - struct pcf50633 *pcf; - int regulator_id, millivolts; - u8 volt_bits; - - pcf = rdev_get_drvdata(rdev); - - regulator_id = rdev_get_id(rdev); - if (regulator_id >= PCF50633_NUM_REGULATORS) - return -EINVAL; - - millivolts = min_uV / 1000; - - switch (regulator_id) { - case PCF50633_REGULATOR_AUTO: - volt_bits = auto_voltage_bits(millivolts); - break; - case PCF50633_REGULATOR_DOWN1: - case PCF50633_REGULATOR_DOWN2: - volt_bits = down_voltage_bits(millivolts); - break; - case PCF50633_REGULATOR_LDO1: - case PCF50633_REGULATOR_LDO2: - case PCF50633_REGULATOR_LDO3: - case PCF50633_REGULATOR_LDO4: - case PCF50633_REGULATOR_LDO5: - case PCF50633_REGULATOR_LDO6: - case PCF50633_REGULATOR_HCLDO: - case PCF50633_REGULATOR_MEMLDO: - volt_bits = ldo_voltage_bits(millivolts); - break; - default: - return -EINVAL; - } - - return volt_bits; -} - -static int pcf50633_regulator_list_voltage(struct regulator_dev *rdev, - unsigned int index) -{ - int regulator_id = rdev_get_id(rdev); - - int millivolts; - - switch (regulator_id) { - case PCF50633_REGULATOR_AUTO: - millivolts = auto_voltage_value(index); - break; - case PCF50633_REGULATOR_DOWN1: - case PCF50633_REGULATOR_DOWN2: - millivolts = down_voltage_value(index); - break; - case PCF50633_REGULATOR_LDO1: - case PCF50633_REGULATOR_LDO2: - case PCF50633_REGULATOR_LDO3: - case PCF50633_REGULATOR_LDO4: - case PCF50633_REGULATOR_LDO5: - case PCF50633_REGULATOR_LDO6: - case PCF50633_REGULATOR_HCLDO: - case PCF50633_REGULATOR_MEMLDO: - millivolts = ldo_voltage_value(index); - break; - default: - return -EINVAL; - } - - return millivolts * 1000; -} - static struct regulator_ops pcf50633_regulator_ops = { .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, - .list_voltage = pcf50633_regulator_list_voltage, - .map_voltage = pcf50633_regulator_map_voltage, + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, }; static const struct regulator_desc regulators[] = { - [PCF50633_REGULATOR_AUTO] = PCF50633_REGULATOR("auto", AUTO, 128), - [PCF50633_REGULATOR_DOWN1] = PCF50633_REGULATOR("down1", DOWN1, 96), - [PCF50633_REGULATOR_DOWN2] = PCF50633_REGULATOR("down2", DOWN2, 96), - [PCF50633_REGULATOR_LDO1] = PCF50633_REGULATOR("ldo1", LDO1, 28), - [PCF50633_REGULATOR_LDO2] = PCF50633_REGULATOR("ldo2", LDO2, 28), - [PCF50633_REGULATOR_LDO3] = PCF50633_REGULATOR("ldo3", LDO3, 28), - [PCF50633_REGULATOR_LDO4] = PCF50633_REGULATOR("ldo4", LDO4, 28), - [PCF50633_REGULATOR_LDO5] = PCF50633_REGULATOR("ldo5", LDO5, 28), - [PCF50633_REGULATOR_LDO6] = PCF50633_REGULATOR("ldo6", LDO6, 28), - [PCF50633_REGULATOR_HCLDO] = PCF50633_REGULATOR("hcldo", HCLDO, 28), - [PCF50633_REGULATOR_MEMLDO] = PCF50633_REGULATOR("memldo", MEMLDO, 28), + [PCF50633_REGULATOR_AUTO] = + PCF50633_REGULATOR("auto", AUTO, 1800000, 25000, 0x2f, 128), + [PCF50633_REGULATOR_DOWN1] = + PCF50633_REGULATOR("down1", DOWN1, 625000, 25000, 0, 96), + [PCF50633_REGULATOR_DOWN2] = + PCF50633_REGULATOR("down2", DOWN2, 625000, 25000, 0, 96), + [PCF50633_REGULATOR_LDO1] = + PCF50633_REGULATOR("ldo1", LDO1, 900000, 100000, 0, 28), + [PCF50633_REGULATOR_LDO2] = + PCF50633_REGULATOR("ldo2", LDO2, 900000, 100000, 0, 28), + [PCF50633_REGULATOR_LDO3] = + PCF50633_REGULATOR("ldo3", LDO3, 900000, 100000, 0, 28), + [PCF50633_REGULATOR_LDO4] = + PCF50633_REGULATOR("ldo4", LDO4, 900000, 100000, 0, 28), + [PCF50633_REGULATOR_LDO5] = + PCF50633_REGULATOR("ldo5", LDO5, 900000, 100000, 0, 28), + [PCF50633_REGULATOR_LDO6] = + PCF50633_REGULATOR("ldo6", LDO6, 900000, 100000, 0, 28), + [PCF50633_REGULATOR_HCLDO] = + PCF50633_REGULATOR("hcldo", HCLDO, 900000, 100000, 0, 28), + [PCF50633_REGULATOR_MEMLDO] = + PCF50633_REGULATOR("memldo", MEMLDO, 900000, 100000, 0, 28), }; static int __devinit pcf50633_regulator_probe(struct platform_device *pdev) |