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Commit efbe5199 authored by Javier Martinez Canillas's avatar Javier Martinez Canillas Committed by Mark Brown
Browse files

regulator: max77802: Add .{get,set}_mode callbacks 



Some max77802 LDOs (1, 3, 20 and 21) support to be configured in Low
Power Mode during system normal operation. Add function handlers for
the .get_mode and .set_mode operations to set the mode on these LDOs.

Signed-off-by: default avatarJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent b0615f1d

drivers/regulator/max77802.c

+46 −0
Original line number Diff line number Diff line
@@ -70,6 +70,12 @@ struct max77802_regulator_prv { 
	unsigned int opmode[MAX77802_REG_MAX];

};



static inline int max77802_map_mode(int mode)

{

	return mode == MAX77802_OPMODE_NORMAL ?

		REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY;

}



static int max77802_get_opmode_shift(int id)

{

	if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 &&
@@ -104,6 +110,44 @@ static int max77802_set_suspend_disable(struct regulator_dev *rdev) 
				  rdev->desc->enable_mask, val << shift);

}



/*

 * Some LDOs support Low Power Mode while the system is running.

 *

 * LDOs 1, 3, 20, 21.

 */

static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode)

{

	struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);

	int id = rdev_get_id(rdev);

	unsigned int val;

	int shift = max77802_get_opmode_shift(id);



	switch (mode) {

	case REGULATOR_MODE_STANDBY:

		val = MAX77802_OPMODE_LP;	/* ON in Low Power Mode */

		break;

	case REGULATOR_MODE_NORMAL:

		val = MAX77802_OPMODE_NORMAL;	/* ON in Normal Mode */

		break;

	default:

		dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n",

			 rdev->desc->name, mode);

		return -EINVAL;

	}



	max77802->opmode[id] = val;

	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,

				  rdev->desc->enable_mask, val << shift);

}



static unsigned max77802_get_mode(struct regulator_dev *rdev)

{

	struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);

	int id = rdev_get_id(rdev);



	return max77802_map_mode(max77802->opmode[id]);

}



/*

 * Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state

 * (Enable Control Logic1 by PWRREQ)
@@ -268,6 +312,8 @@ static struct regulator_ops max77802_ldo_ops_logic2 = { 
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,

	.set_voltage_sel	= regulator_set_voltage_sel_regmap,

	.set_voltage_time_sel	= regulator_set_voltage_time_sel,

	.set_mode		= max77802_set_mode,

	.get_mode		= max77802_get_mode,

	.set_suspend_mode	= max77802_ldo_set_suspend_mode_logic2,

};