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Commit 2b17fa28 authored by Romain Perier's avatar Romain Perier Committed by Mark Brown
Browse files

regulator: act8865: Add support to turn off all outputs 



When the property "poweroff-source" is found in the
devicetree, the function pm_power_off is defined. This function sends the
rights bit fields to the global off control register. shutdown/poweroff
commands are now supported for hardware components which use these PMU.

Signed-off-by: default avatarRomain Perier <romain.perier@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent a4b4e046

drivers/regulator/act8865-regulator.c

+31 −0
Original line number Original line Diff line number Diff line
@@ -61,6 +61,8 @@ 
#define	ACT8846_REG12_VSET	0xa0

#define	ACT8846_REG12_VSET	0xa0

#define	ACT8846_REG12_CTRL	0xa1

#define	ACT8846_REG12_CTRL	0xa1

#define	ACT8846_REG13_CTRL	0xb1

#define	ACT8846_REG13_CTRL	0xb1

#define	ACT8846_GLB_OFF_CTRL	0xc3

#define	ACT8846_OFF_SYSMASK	0x18





/*

/*

 * ACT8865 Global Register Map.

 * ACT8865 Global Register Map.
@@ -84,6 +86,7 @@ 
#define	ACT8865_LDO3_CTRL	0x61

#define	ACT8865_LDO3_CTRL	0x61

#define	ACT8865_LDO4_VSET	0x64

#define	ACT8865_LDO4_VSET	0x64

#define	ACT8865_LDO4_CTRL	0x65

#define	ACT8865_LDO4_CTRL	0x65

#define	ACT8865_MSTROFF		0x20





/*

/*

 * Field Definitions.

 * Field Definitions.
@@ -98,6 +101,8 @@ 




struct act8865 {

struct act8865 {

	struct regmap *regmap;

	struct regmap *regmap;

	int off_reg;

	int off_mask;

};

};





static const struct regmap_config act8865_regmap_config = {

static const struct regmap_config act8865_regmap_config = {
@@ -275,6 +280,16 @@ static struct regulator_init_data 
	return NULL;

	return NULL;

}

}





static struct i2c_client *act8865_i2c_client;

static void act8865_power_off(void)

{

	struct act8865 *act8865;



	act8865 = i2c_get_clientdata(act8865_i2c_client);

	regmap_write(act8865->regmap, act8865->off_reg, act8865->off_mask);

	while (1);

}



static int act8865_pmic_probe(struct i2c_client *client,

static int act8865_pmic_probe(struct i2c_client *client,

			      const struct i2c_device_id *i2c_id)

			      const struct i2c_device_id *i2c_id)

{

{
@@ -285,6 +300,7 @@ static int act8865_pmic_probe(struct i2c_client *client, 
	int i, ret, num_regulators;

	int i, ret, num_regulators;

	struct act8865 *act8865;

	struct act8865 *act8865;

	unsigned long type;

	unsigned long type;

	int off_reg, off_mask;





	pdata = dev_get_platdata(dev);

	pdata = dev_get_platdata(dev);
@@ -304,10 +320,14 @@ static int act8865_pmic_probe(struct i2c_client *client, 
	case ACT8846:

	case ACT8846:

		regulators = act8846_regulators;

		regulators = act8846_regulators;

		num_regulators = ARRAY_SIZE(act8846_regulators);

		num_regulators = ARRAY_SIZE(act8846_regulators);

		off_reg = ACT8846_GLB_OFF_CTRL;

		off_mask = ACT8846_OFF_SYSMASK;

		break;

		break;

	case ACT8865:

	case ACT8865:

		regulators = act8865_regulators;

		regulators = act8865_regulators;

		num_regulators = ARRAY_SIZE(act8865_regulators);

		num_regulators = ARRAY_SIZE(act8865_regulators);

		off_reg = ACT8865_SYS_CTRL;

		off_mask = ACT8865_MSTROFF;

		break;

		break;

	default:

	default:

		dev_err(dev, "invalid device id %lu\n", type);

		dev_err(dev, "invalid device id %lu\n", type);
@@ -345,6 +365,17 @@ static int act8865_pmic_probe(struct i2c_client *client, 
		return ret;

		return ret;

	}

	}





	if (of_system_has_poweroff_source(dev->of_node)) {

		if (!pm_power_off) {

			act8865_i2c_client = client;

			act8865->off_reg = off_reg;

			act8865->off_mask = off_mask;

			pm_power_off = act8865_power_off;

		} else {

			dev_err(dev, "Failed to set poweroff capability, already defined\n");

		}

	}



	/* Finally register devices */

	/* Finally register devices */

	for (i = 0; i < num_regulators; i++) {

	for (i = 0; i < num_regulators; i++) {

		const struct regulator_desc *desc = &regulators[i];

		const struct regulator_desc *desc = &regulators[i];