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Commit 8412a5be authored by Liam Breck's avatar Liam Breck Committed by Sebastian Reichel
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power: supply: bq24190_charger: Add property system-minimum-microvolt 



Set minimum system voltage limit obtained from device property.

Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarLiam Breck <kernel@networkimprov.net>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.co.uk>
parent a4c7590b

drivers/power/supply/bq24190_charger.c

+25 −0
Original line number Original line Diff line number Diff line
@@ -43,6 +43,8 @@ 
#define BQ24190_REG_POC_CHG_CONFIG_OTG			0x2

#define BQ24190_REG_POC_CHG_CONFIG_OTG			0x2

#define BQ24190_REG_POC_SYS_MIN_MASK		(BIT(3) | BIT(2) | BIT(1))

#define BQ24190_REG_POC_SYS_MIN_MASK		(BIT(3) | BIT(2) | BIT(1))

#define BQ24190_REG_POC_SYS_MIN_SHIFT		1

#define BQ24190_REG_POC_SYS_MIN_SHIFT		1

#define BQ24190_REG_POC_SYS_MIN_MIN			3000

#define BQ24190_REG_POC_SYS_MIN_MAX			3700

#define BQ24190_REG_POC_BOOST_LIM_MASK		BIT(0)

#define BQ24190_REG_POC_BOOST_LIM_MASK		BIT(0)

#define BQ24190_REG_POC_BOOST_LIM_SHIFT		0

#define BQ24190_REG_POC_BOOST_LIM_SHIFT		0
@@ -159,6 +161,7 @@ struct bq24190_dev_info { 
	char				model_name[I2C_NAME_SIZE];

	char				model_name[I2C_NAME_SIZE];

	bool				initialized;

	bool				initialized;

	bool				irq_event;

	bool				irq_event;

	u16				sys_min;

	struct mutex			f_reg_lock;

	struct mutex			f_reg_lock;

	u8				f_reg;

	u8				f_reg;

	u8				ss_reg;

	u8				ss_reg;
@@ -530,6 +533,16 @@ static int bq24190_set_config(struct bq24190_dev_info *bdi) 
	if (ret < 0)

	if (ret < 0)

		return ret;

		return ret;





	if (bdi->sys_min) {

		v = bdi->sys_min / 100 - 30; // manual section 9.5.1.2, table 9

		ret = bq24190_write_mask(bdi, BQ24190_REG_POC,

					 BQ24190_REG_POC_SYS_MIN_MASK,

					 BQ24190_REG_POC_SYS_MIN_SHIFT,

					 v);

		if (ret < 0)

			return ret;

	}



	return 0;

	return 0;

}

}
@@ -1509,6 +1522,18 @@ static int bq24190_hw_init(struct bq24190_dev_info *bdi) 




static int bq24190_get_config(struct bq24190_dev_info *bdi)

static int bq24190_get_config(struct bq24190_dev_info *bdi)

{

{

	const char * const s = "ti,system-minimum-microvolt";

	int v;



	if (device_property_read_u32(bdi->dev, s, &v) == 0) {

		v /= 1000;

		if (v >= BQ24190_REG_POC_SYS_MIN_MIN

		 && v <= BQ24190_REG_POC_SYS_MIN_MAX)

			bdi->sys_min = v;

		else

			dev_warn(bdi->dev, "invalid value for %s: %u\n", s, v);

	}



	return 0;

	return 0;

}

}