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    Subject[PATCH] regulator: rk808: Add support setting suspend voltage
    Date
    support setting suspend voltage and disable regulator in suspend.

    Signed-off-by: Chris Zhong <zyw@rock-chips.com>

    ---

    drivers/regulator/rk808-regulator.c | 37 +++++++++++++++++++++++++++++++++++
    1 file changed, 37 insertions(+)

    diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c
    index e305416..6687e6e 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 +97,32 @@ 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_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 +132,8 @@ 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_disable = rk808_set_suspend_disable,
    };

    static struct regulator_ops rk808_reg_ops = {
    @@ -110,12 +144,15 @@ 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_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,
    + .set_suspend_disable = rk808_set_suspend_disable,
    };

    static const struct regulator_desc rk808_reg[] = {
    --
    1.7.9.5


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