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regulator: rk808: Add support setting suspend voltage 

support setting suspend voltage and disable regulator in suspend.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Chris Zhong 2014-10-10 15:35:06 -07:00 committed by Mark Brown
parent f114040e3e
commit 251ce318df
1 changed files with 54 additions and 3 deletions
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57
drivers/regulator/rk808-regulator.c
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@ -36,6 +36,12 @@
#define RK808_RAMP_RATE_6MV_PER_US (2 << RK808_RAMP_RATE_OFFSET)
#define RK808_RAMP_RATE_10MV_PER_US (3 << RK808_RAMP_RATE_OFFSET)
/* Offset from XXX_ON_VSEL to XXX_SLP_VSEL */
#define RK808_SLP_REG_OFFSET 1
/* Offset from XXX_EN_REG to SLEEP_SET_OFF_XXX */
#define RK808_SLP_SET_OFF_REG_OFFSET 2
static const int rk808_buck_config_regs[] = {
RK808_BUCK1_CONFIG_REG,
RK808_BUCK2_CONFIG_REG,
@ -91,6 +97,43 @@ static int rk808_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
RK808_RAMP_RATE_MASK, ramp_value);
}
int rk808_set_suspend_voltage(struct regulator_dev *rdev, int uv)
{
unsigned int reg;
int sel = regulator_map_voltage_linear_range(rdev, uv, uv);
if (sel < 0)
return -EINVAL;
reg = rdev->desc->vsel_reg + RK808_SLP_REG_OFFSET;
return regmap_update_bits(rdev->regmap, reg,
rdev->desc->vsel_mask,
sel);
}
int rk808_set_suspend_enable(struct regulator_dev *rdev)
{
unsigned int reg;
reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET;
return regmap_update_bits(rdev->regmap, reg,
rdev->desc->enable_mask,
0);
}
int rk808_set_suspend_disable(struct regulator_dev *rdev)
{
unsigned int reg;
reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET;
return regmap_update_bits(rdev->regmap, reg,
rdev->desc->enable_mask,
rdev->desc->enable_mask);
}
static struct regulator_ops rk808_buck1_2_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
@ -100,6 +143,9 @@ static struct regulator_ops rk808_buck1_2_ops = {
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_ramp_delay = rk808_set_ramp_delay,
.set_suspend_voltage = rk808_set_suspend_voltage,
.set_suspend_enable = rk808_set_suspend_enable,
.set_suspend_disable = rk808_set_suspend_disable,
};
static struct regulator_ops rk808_reg_ops = {
@ -110,12 +156,17 @@ static struct regulator_ops rk808_reg_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_suspend_voltage = rk808_set_suspend_voltage,
.set_suspend_enable = rk808_set_suspend_enable,
.set_suspend_disable = rk808_set_suspend_disable,
};
static struct regulator_ops rk808_switch_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_suspend_enable = rk808_set_suspend_enable,
.set_suspend_disable = rk808_set_suspend_disable,
};
static const struct regulator_desc rk808_reg[] = {