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Commit 251ce318 authored by Chris Zhong's avatar Chris Zhong Committed by Mark Brown
Browse files

regulator: rk808: Add support setting suspend voltage 



support setting suspend voltage and disable regulator in suspend.

Signed-off-by: default avatarChris Zhong <zyw@rock-chips.com>
Reviewed-by: default avatarDoug Anderson <dianders@chromium.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f114040e

drivers/regulator/rk808-regulator.c

+54 −3
Original line number Diff line number Diff line
@@ -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,

	.set_suspend_enable	= rk808_set_suspend_enable,

	.set_suspend_disable	= rk808_set_suspend_disable,

};



static const struct regulator_desc rk808_reg[] = {