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| author | Chris Zhong <zyw@rock-chips.com> | 2014-10-10 15:35:06 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2014-10-20 12:23:55 +0100 |
| commit | 251ce318df3c07dbb3e484378a136a29e2f9bec1 (patch) | |
| tree | b872e80a40d8a4e381a245e7d8ffa1305c16f80a | |
| parent | f114040e3ea6e07372334ade75d1ee0775c355e1 (diff) | |
| download | linux-251ce318df3c07dbb3e484378a136a29e2f9bec1.tar.gz linux-251ce318df3c07dbb3e484378a136a29e2f9bec1.tar.bz2 linux-251ce318df3c07dbb3e484378a136a29e2f9bec1.zip | |
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>
| -rw-r--r-- | drivers/regulator/rk808-regulator.c | 57 |
1 files changed, 54 insertions, 3 deletions
diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c index e305416d7697..8d1dc48ed8a9 100644 --- a/drivers/regulator/rk808-regulator.c +++ b/drivers/regulator/rk808-regulator.c @@ -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[] = { |