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regulator: add ab8500 enable and raise time delays 

This uses the new infrastructure to provide proper delays when
enabling or setting the voltage of one specific regulator.

Cc: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Linus Walleij 2011-03-17 13:25:02 +01:00 committed by Liam Girdwood
parent 88cd222b25
commit 42ab616afe
1 changed files with 30 additions and 0 deletions
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30
drivers/regulator/ab8500.c
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@ -38,6 +38,7 @@
* @voltage_mask: mask to control regulator voltage
* @voltages: supported voltage table
* @voltages_len: number of supported voltages for the regulator
* @delay: startup/set voltage delay in us
*/
struct ab8500_regulator_info {
struct device *dev;
@ -55,6 +56,7 @@ struct ab8500_regulator_info {
u8 voltage_mask;
int const *voltages;
int voltages_len;
unsigned int delay;
};
/* voltage tables for the vauxn/vintcore supplies */
@ -290,6 +292,29 @@ static int ab8500_regulator_set_voltage(struct regulator_dev *rdev,
return ret;
}
static int ab8500_regulator_enable_time(struct regulator_dev *rdev)
{
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
return info->delay;
}
static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int old_sel,
unsigned int new_sel)
{
struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
int ret;
/* If the regulator isn't on, it won't take time here */
ret = ab8500_regulator_is_enabled(rdev);
if (ret < 0)
return ret;
if (!ret)
return 0;
return info->delay;
}
static struct regulator_ops ab8500_regulator_ops = {
.enable = ab8500_regulator_enable,
.disable = ab8500_regulator_disable,
@ -297,6 +322,8 @@ static struct regulator_ops ab8500_regulator_ops = {
.get_voltage = ab8500_regulator_get_voltage,
.set_voltage = ab8500_regulator_set_voltage,
.list_voltage = ab8500_list_voltage,
.enable_time = ab8500_regulator_enable_time,
.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
};
static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
@ -317,6 +344,8 @@ static struct regulator_ops ab8500_regulator_fixed_ops = {
.is_enabled = ab8500_regulator_is_enabled,
.get_voltage = ab8500_fixed_get_voltage,
.list_voltage = ab8500_list_voltage,
.enable_time = ab8500_regulator_enable_time,
.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
};
static struct ab8500_regulator_info
@ -426,6 +455,7 @@ static struct ab8500_regulator_info
.owner = THIS_MODULE,
.n_voltages = 1,
},
.delay = 10000,
.fixed_uV = 2000000,
.update_bank = 0x03,
.update_reg = 0x80,