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regulator: Convert max8997 to set_voltage_time_sel 

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2012-04-11 22:58:03 +08:00 committed by Mark Brown
parent 9e96b3a7ad
commit 62bc4d4a70
1 changed files with 42 additions and 13 deletions
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55
drivers/regulator/max8997.c
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@ -489,9 +489,7 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev,
int min_vol = min_uV / 1000, max_vol = max_uV / 1000; int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
const struct voltage_map_desc *desc; const struct voltage_map_desc *desc;
int rid = rdev_get_id(rdev); int rid = rdev_get_id(rdev);
int reg, shift = 0, mask, ret; int i, reg, shift, mask, ret;
int i;
u8 org;
switch (rid) { switch (rid) {
case MAX8997_LDO1 ... MAX8997_LDO21: case MAX8997_LDO1 ... MAX8997_LDO21:
@ -520,21 +518,50 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev,
if (ret) if (ret)
return ret; return ret;
max8997_read_reg(i2c, reg, &org);
org = (org & mask) >> shift;
ret = max8997_update_reg(i2c, reg, i << shift, mask << shift); ret = max8997_update_reg(i2c, reg, i << shift, mask << shift);
*selector = i; *selector = i;
if (rid == MAX8997_BUCK1 || rid == MAX8997_BUCK2 || return ret;
rid == MAX8997_BUCK4 || rid == MAX8997_BUCK5) { }
/* If the voltage is increasing */
if (org < i) static int max8997_set_voltage_ldobuck_time_sel(struct regulator_dev *rdev,
udelay(DIV_ROUND_UP(desc->step * (i - org), unsigned int old_selector,
max8997->ramp_delay)); unsigned int new_selector)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
int rid = rdev_get_id(rdev);
const struct voltage_map_desc *desc = reg_voltage_map[rid];
/* Delay is required only if the voltage is increasing */
if (old_selector >= new_selector)
return 0;
/* No need to delay if gpio_dvs_mode */
switch (rid) {
case MAX8997_BUCK1:
if (max8997->buck1_gpiodvs)
return 0;
break;
case MAX8997_BUCK2:
if (max8997->buck2_gpiodvs)
return 0;
break;
case MAX8997_BUCK5:
if (max8997->buck5_gpiodvs)
return 0;
break;
} }
return ret; switch (rid) {
case MAX8997_BUCK1:
case MAX8997_BUCK2:
case MAX8997_BUCK4:
case MAX8997_BUCK5:
return DIV_ROUND_UP(desc->step * (new_selector - old_selector),
max8997->ramp_delay);
}
return 0;
} }
/* /*
@ -780,6 +807,7 @@ static struct regulator_ops max8997_ldo_ops = {
.disable = max8997_reg_disable, .disable = max8997_reg_disable,
.get_voltage_sel = max8997_get_voltage_sel, .get_voltage_sel = max8997_get_voltage_sel,
.set_voltage = max8997_set_voltage_ldobuck, .set_voltage = max8997_set_voltage_ldobuck,
.set_voltage_time_sel = max8997_set_voltage_ldobuck_time_sel,
.set_suspend_enable = max8997_reg_enable_suspend, .set_suspend_enable = max8997_reg_enable_suspend,
.set_suspend_disable = max8997_reg_disable_suspend, .set_suspend_disable = max8997_reg_disable_suspend,
}; };
@ -791,6 +819,7 @@ static struct regulator_ops max8997_buck_ops = {
.disable = max8997_reg_disable, .disable = max8997_reg_disable,
.get_voltage_sel = max8997_get_voltage_sel, .get_voltage_sel = max8997_get_voltage_sel,
.set_voltage = max8997_set_voltage_buck, .set_voltage = max8997_set_voltage_buck,
.set_voltage_time_sel = max8997_set_voltage_ldobuck_time_sel,
.set_suspend_enable = max8997_reg_enable_suspend, .set_suspend_enable = max8997_reg_enable_suspend,
.set_suspend_disable = max8997_reg_disable_suspend, .set_suspend_disable = max8997_reg_disable_suspend,
}; };