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path: root/drivers/regulator/max8997.c
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Diffstat (limited to 'drivers/regulator/max8997.c')
-rw-r--r--drivers/regulator/max8997.c179
1 files changed, 68 insertions, 111 deletions
diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index 96579296f04d..db09244bb3ed 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -68,29 +68,28 @@ struct voltage_map_desc {
int min;
int max;
int step;
- unsigned int n_bits;
};
/* Voltage maps in mV */
static const struct voltage_map_desc ldo_voltage_map_desc = {
- .min = 800, .max = 3950, .step = 50, .n_bits = 6,
+ .min = 800, .max = 3950, .step = 50,
}; /* LDO1 ~ 18, 21 all */
static const struct voltage_map_desc buck1245_voltage_map_desc = {
- .min = 650, .max = 2225, .step = 25, .n_bits = 6,
+ .min = 650, .max = 2225, .step = 25,
}; /* Buck1, 2, 4, 5 */
static const struct voltage_map_desc buck37_voltage_map_desc = {
- .min = 750, .max = 3900, .step = 50, .n_bits = 6,
+ .min = 750, .max = 3900, .step = 50,
}; /* Buck3, 7 */
/* current map in mA */
static const struct voltage_map_desc charger_current_map_desc = {
- .min = 200, .max = 950, .step = 50, .n_bits = 4,
+ .min = 200, .max = 950, .step = 50,
};
static const struct voltage_map_desc topoff_current_map_desc = {
- .min = 50, .max = 200, .step = 10, .n_bits = 4,
+ .min = 50, .max = 200, .step = 10,
};
static const struct voltage_map_desc *reg_voltage_map[] = {
@@ -320,6 +319,7 @@ static int max8997_reg_disable(struct regulator_dev *rdev)
static int max8997_get_voltage_register(struct regulator_dev *rdev,
int *_reg, int *_shift, int *_mask)
{
+ struct max8997_data *max8997 = rdev_get_drvdata(rdev);
int rid = rdev_get_id(rdev);
int reg, shift = 0, mask = 0x3f;
@@ -329,9 +329,13 @@ static int max8997_get_voltage_register(struct regulator_dev *rdev,
break;
case MAX8997_BUCK1:
reg = MAX8997_REG_BUCK1DVS1;
+ if (max8997->buck1_gpiodvs)
+ reg += max8997->buck125_gpioindex;
break;
case MAX8997_BUCK2:
reg = MAX8997_REG_BUCK2DVS1;
+ if (max8997->buck2_gpiodvs)
+ reg += max8997->buck125_gpioindex;
break;
case MAX8997_BUCK3:
reg = MAX8997_REG_BUCK3DVS;
@@ -341,6 +345,8 @@ static int max8997_get_voltage_register(struct regulator_dev *rdev,
break;
case MAX8997_BUCK5:
reg = MAX8997_REG_BUCK5DVS1;
+ if (max8997->buck5_gpiodvs)
+ reg += max8997->buck125_gpioindex;
break;
case MAX8997_BUCK7:
reg = MAX8997_REG_BUCK7DVS;
@@ -381,18 +387,12 @@ static int max8997_get_voltage(struct regulator_dev *rdev)
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
struct i2c_client *i2c = max8997->iodev->i2c;
int reg, shift, mask, ret;
- int rid = rdev_get_id(rdev);
u8 val;
ret = max8997_get_voltage_register(rdev, &reg, &shift, &mask);
if (ret)
return ret;
- if ((rid == MAX8997_BUCK1 && max8997->buck1_gpiodvs) ||
- (rid == MAX8997_BUCK2 && max8997->buck2_gpiodvs) ||
- (rid == MAX8997_BUCK5 && max8997->buck5_gpiodvs))
- reg += max8997->buck125_gpioindex;
-
ret = max8997_read_reg(i2c, reg, &val);
if (ret)
return ret;
@@ -415,7 +415,7 @@ static inline int max8997_get_voltage_proper_val(
const struct voltage_map_desc *desc,
int min_vol, int max_vol)
{
- int i = 0;
+ int i;
if (desc == NULL)
return -EINVAL;
@@ -423,14 +423,12 @@ static inline int max8997_get_voltage_proper_val(
if (max_vol < desc->min || min_vol > desc->max)
return -EINVAL;
- while (desc->min + desc->step * i < min_vol &&
- desc->min + desc->step * i < desc->max)
- i++;
+ if (min_vol < desc->min)
+ min_vol = desc->min;
- if (desc->min + desc->step * i > max_vol)
- return -EINVAL;
+ i = DIV_ROUND_UP(min_vol - desc->min, desc->step);
- if (i >= (1 << desc->n_bits))
+ if (desc->min + desc->step * i > max_vol)
return -EINVAL;
return i;
@@ -854,109 +852,65 @@ static struct regulator_ops max8997_charger_fixedstate_ops = {
.set_current_limit = max8997_set_voltage_ldobuck_wrap,
};
-#define regulator_desc_ldo(num) { \
- .name = "LDO"#num, \
- .id = MAX8997_LDO##num, \
- .ops = &max8997_ldo_ops, \
+#define MAX8997_VOLTAGE_REGULATOR(_name, _ops) {\
+ .name = #_name, \
+ .id = MAX8997_##_name, \
+ .ops = &_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}
-#define regulator_desc_buck(num) { \
- .name = "BUCK"#num, \
- .id = MAX8997_BUCK##num, \
- .ops = &max8997_buck_ops, \
- .type = REGULATOR_VOLTAGE, \
+
+#define MAX8997_CURRENT_REGULATOR(_name, _ops) {\
+ .name = #_name, \
+ .id = MAX8997_##_name, \
+ .ops = &_ops, \
+ .type = REGULATOR_CURRENT, \
.owner = THIS_MODULE, \
}
static struct regulator_desc regulators[] = {
- regulator_desc_ldo(1),
- regulator_desc_ldo(2),
- regulator_desc_ldo(3),
- regulator_desc_ldo(4),
- regulator_desc_ldo(5),
- regulator_desc_ldo(6),
- regulator_desc_ldo(7),
- regulator_desc_ldo(8),
- regulator_desc_ldo(9),
- regulator_desc_ldo(10),
- regulator_desc_ldo(11),
- regulator_desc_ldo(12),
- regulator_desc_ldo(13),
- regulator_desc_ldo(14),
- regulator_desc_ldo(15),
- regulator_desc_ldo(16),
- regulator_desc_ldo(17),
- regulator_desc_ldo(18),
- regulator_desc_ldo(21),
- regulator_desc_buck(1),
- regulator_desc_buck(2),
- regulator_desc_buck(3),
- regulator_desc_buck(4),
- regulator_desc_buck(5),
- {
- .name = "BUCK6",
- .id = MAX8997_BUCK6,
- .ops = &max8997_fixedvolt_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- },
- regulator_desc_buck(7),
- {
- .name = "EN32KHz_AP",
- .id = MAX8997_EN32KHZ_AP,
- .ops = &max8997_fixedvolt_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "EN32KHz_CP",
- .id = MAX8997_EN32KHZ_CP,
- .ops = &max8997_fixedvolt_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "ENVICHG",
- .id = MAX8997_ENVICHG,
- .ops = &max8997_fixedvolt_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "ESAFEOUT1",
- .id = MAX8997_ESAFEOUT1,
- .ops = &max8997_safeout_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "ESAFEOUT2",
- .id = MAX8997_ESAFEOUT2,
- .ops = &max8997_safeout_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "CHARGER_CV",
- .id = MAX8997_CHARGER_CV,
- .ops = &max8997_fixedstate_ops,
- .type = REGULATOR_VOLTAGE,
- .owner = THIS_MODULE,
- }, {
- .name = "CHARGER",
- .id = MAX8997_CHARGER,
- .ops = &max8997_charger_ops,
- .type = REGULATOR_CURRENT,
- .owner = THIS_MODULE,
- }, {
- .name = "CHARGER_TOPOFF",
- .id = MAX8997_CHARGER_TOPOFF,
- .ops = &max8997_charger_fixedstate_ops,
- .type = REGULATOR_CURRENT,
- .owner = THIS_MODULE,
- },
+ MAX8997_VOLTAGE_REGULATOR(LDO1, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO2, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO3, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO4, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO5, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO6, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO7, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO8, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO9, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO10, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO11, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO12, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO13, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO14, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO15, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO16, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO17, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO18, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(LDO21, max8997_ldo_ops),
+ MAX8997_VOLTAGE_REGULATOR(BUCK1, max8997_buck_ops),
+ MAX8997_VOLTAGE_REGULATOR(BUCK2, max8997_buck_ops),
+ MAX8997_VOLTAGE_REGULATOR(BUCK3, max8997_buck_ops),
+ MAX8997_VOLTAGE_REGULATOR(BUCK4, max8997_buck_ops),
+ MAX8997_VOLTAGE_REGULATOR(BUCK5, max8997_buck_ops),
+ MAX8997_VOLTAGE_REGULATOR(BUCK6, max8997_fixedvolt_ops),
+ MAX8997_VOLTAGE_REGULATOR(BUCK7, max8997_buck_ops),
+ MAX8997_VOLTAGE_REGULATOR(EN32KHZ_AP, max8997_fixedvolt_ops),
+ MAX8997_VOLTAGE_REGULATOR(EN32KHZ_CP, max8997_fixedvolt_ops),
+ MAX8997_VOLTAGE_REGULATOR(ENVICHG, max8997_fixedvolt_ops),
+ MAX8997_VOLTAGE_REGULATOR(ESAFEOUT1, max8997_safeout_ops),
+ MAX8997_VOLTAGE_REGULATOR(ESAFEOUT2, max8997_safeout_ops),
+ MAX8997_VOLTAGE_REGULATOR(CHARGER_CV, max8997_fixedstate_ops),
+ MAX8997_CURRENT_REGULATOR(CHARGER, max8997_charger_ops),
+ MAX8997_CURRENT_REGULATOR(CHARGER_TOPOFF,
+ max8997_charger_fixedstate_ops),
};
static __devinit int max8997_pmic_probe(struct platform_device *pdev)
{
struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent);
struct max8997_platform_data *pdata = dev_get_platdata(iodev->dev);
+ struct regulator_config config = { };
struct regulator_dev **rdev;
struct max8997_data *max8997;
struct i2c_client *i2c;
@@ -1140,8 +1094,11 @@ static __devinit int max8997_pmic_probe(struct platform_device *pdev)
else if (id == MAX8997_CHARGER_CV)
regulators[id].n_voltages = 16;
- rdev[i] = regulator_register(&regulators[id], max8997->dev,
- pdata->regulators[i].initdata, max8997, NULL);
+ config.dev = max8997->dev;
+ config.init_data = pdata->regulators[i].initdata;
+ config.driver_data = max8997;
+
+ rdev[i] = regulator_register(&regulators[id], &config);
if (IS_ERR(rdev[i])) {
ret = PTR_ERR(rdev[i]);
dev_err(max8997->dev, "regulator init failed for %d\n",
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