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authorAxel Lin <axel.lin@ingics.com>2013-07-20 16:56:45 +0800
committerMark Brown <broonie@linaro.org>2013-07-24 15:48:01 +0100
commitfba6583be610dd83369ecba88d7ee84527d00cf1 (patch)
treefff010b0b836991fbaa62a81ec0e6bab49f082b3 /drivers/regulator
parent3b2f64d00c46e1e4e9bd0bb9bb12619adac27a4b (diff)
downloadop-kernel-dev-fba6583be610dd83369ecba88d7ee84527d00cf1.zip
op-kernel-dev-fba6583be610dd83369ecba88d7ee84527d00cf1.tar.gz
regulator: tps65912: Convert tps65912_ops_ldo to use linear ranges
The ldo voltage table is composed of linear ranges. Below is the equation in original code (tps65912_vsel_to_uv_ldo): 0 ... 32: uv = vsel * 25000 + 800000; 33 ... 60: uv = (vsel - 32) * 50000 + 1600000; = (vsel -33) * 50000 + 1650000; 61 ...63: uv = (vsel - 60) * 100000 + 3000000; = (vsel - 61) * 100000 + 3100000; This patch converts tps65912_ops_ldo to use multiple linear ranges APIs. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/tps65912-regulator.c39
1 files changed, 19 insertions, 20 deletions
diff --git a/drivers/regulator/tps65912-regulator.c b/drivers/regulator/tps65912-regulator.c
index 17e994e..281e52a 100644
--- a/drivers/regulator/tps65912-regulator.c
+++ b/drivers/regulator/tps65912-regulator.c
@@ -118,6 +118,15 @@ struct tps65912_reg {
int eco_reg;
};
+static const struct regulator_linear_range tps65912_ldo_ranges[] = {
+ { .min_uV = 800000, .max_uV = 1600000, .min_sel = 0, .max_sel = 32,
+ .uV_step = 25000 },
+ { .min_uV = 1650000, .max_uV = 3000000, .min_sel = 33, .max_sel = 60,
+ .uV_step = 50000 },
+ { .min_uV = 3100000, .max_uV = 3300000, .min_sel = 61, .max_sel = 63,
+ .uV_step = 100000 },
+};
+
static int tps65912_get_range(struct tps65912_reg *pmic, int id)
{
struct tps65912 *mfd = pmic->mfd;
@@ -184,20 +193,6 @@ static unsigned long tps65912_vsel_to_uv_range3(u8 vsel)
return uv;
}
-static unsigned long tps65912_vsel_to_uv_ldo(u8 vsel)
-{
- unsigned long uv = 0;
-
- if (vsel <= 32)
- uv = ((vsel * 25000) + 800000);
- else if (vsel > 32 && vsel <= 60)
- uv = (((vsel - 32) * 50000) + 1600000);
- else if (vsel > 60)
- uv = (((vsel - 60) * 100000) + 3000000);
-
- return uv;
-}
-
static int tps65912_get_ctrl_register(int id)
{
if (id >= TPS65912_REG_DCDC1 && id <= TPS65912_REG_LDO4)
@@ -376,9 +371,6 @@ static int tps65912_list_voltage(struct regulator_dev *dev, unsigned selector)
struct tps65912_reg *pmic = rdev_get_drvdata(dev);
int range, voltage = 0, id = rdev_get_id(dev);
- if (id >= TPS65912_REG_LDO1 && id <= TPS65912_REG_LDO10)
- return tps65912_vsel_to_uv_ldo(selector);
-
if (id > TPS65912_REG_DCDC4)
return -EINVAL;
@@ -456,7 +448,8 @@ static struct regulator_ops tps65912_ops_ldo = {
.disable = tps65912_reg_disable,
.get_voltage_sel = tps65912_get_voltage_sel,
.set_voltage_sel = tps65912_set_voltage_sel,
- .list_voltage = tps65912_list_voltage,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
};
static int tps65912_probe(struct platform_device *pdev)
@@ -495,8 +488,14 @@ static int tps65912_probe(struct platform_device *pdev)
pmic->desc[i].name = info->name;
pmic->desc[i].id = i;
pmic->desc[i].n_voltages = 64;
- pmic->desc[i].ops = (i > TPS65912_REG_DCDC4 ?
- &tps65912_ops_ldo : &tps65912_ops_dcdc);
+ if (i > TPS65912_REG_DCDC4) {
+ pmic->desc[i].ops = &tps65912_ops_ldo;
+ pmic->desc[i].linear_ranges = tps65912_ldo_ranges;
+ pmic->desc[i].n_linear_ranges =
+ ARRAY_SIZE(tps65912_ldo_ranges);
+ } else {
+ pmic->desc[i].ops = &tps65912_ops_dcdc;
+ }
pmic->desc[i].type = REGULATOR_VOLTAGE;
pmic->desc[i].owner = THIS_MODULE;
range = tps65912_get_range(pmic, i);
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