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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-12-10 12:43:00 +0900
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-12-10 12:43:00 +0900
commitadca48f7c61c53708a1f1ed567e0447ccb2b3b96 (patch)
treed1860df280202eb86a625bd3400eab02b819100a /drivers/regulator/pcf50633-regulator.c
parent9e218670737e01ef37bd1ac400482462049dfeff (diff)
parente1b0144f9997d3d52c46785143699d82dd525f1d (diff)
Merge remote-tracking branch 'regulator/topic/min' into regulator-next
Diffstat (limited to 'drivers/regulator/pcf50633-regulator.c')
-rw-r--r--drivers/regulator/pcf50633-regulator.c176
1 files changed, 28 insertions, 148 deletions
diff --git a/drivers/regulator/pcf50633-regulator.c b/drivers/regulator/pcf50633-regulator.c
index d776f518aa0d..534075e13d6d 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 pcf50633_regulator_probe(struct platform_device *pdev)