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Commit 7303733a authored by Chen-Yu Tsai's avatar Chen-Yu Tsai Committed by Lee Jones
Browse files

mfd: axp20x: Add support for AXP813 PMIC 



The X-Powers AXP813 PMIC is normally used with Allwinner's A83T SoC.
It has the same range of functions as other X-Powers PMICs, such as
DC-DC buck converter and linear regulator outputs, AC-IN and VBUS
power supplies, power button trigger, GPIOs, ADCs, and a battery
charger.

Note that the IRQ table given in the datasheet is incorrect: in IRQ
enable/status registers 1, there are separate IRQs for ACIN and VBUS,
instead of bits [7:5] being the same as bits [4:2]. So it shares the
same IRQs as the AXP803, rather than the AXP288.

This patch adds basic mfd support for it, with only the power button
enabled.

Signed-off-by: default avatarChen-Yu Tsai <wens@csie.org>
Acked-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 7e312ffd

drivers/mfd/axp20x-rsb.c

+1 −0
Original line number Diff line number Diff line
@@ -64,6 +64,7 @@ static const struct of_device_id axp20x_rsb_of_match[] = { 
	{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },

	{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },

	{ .compatible = "x-powers,axp809", .data = (void *)AXP809_ID },

	{ .compatible = "x-powers,axp813", .data = (void *)AXP813_ID },

	{ },

};

MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match);

drivers/mfd/axp20x.c

+22 −0
Original line number Diff line number Diff line
@@ -44,6 +44,7 @@ static const char * const axp20x_model_names[] = { 
	"AXP803",

	"AXP806",

	"AXP809",

	"AXP813",

};



static const struct regmap_range axp152_writeable_ranges[] = {
@@ -870,6 +871,14 @@ static struct mfd_cell axp809_cells[] = { 
	},

};



static struct mfd_cell axp813_cells[] = {

	{

		.name			= "axp20x-pek",

		.num_resources		= ARRAY_SIZE(axp803_pek_resources),

		.resources		= axp803_pek_resources,

	}

};



static struct axp20x_dev *axp20x_pm_power_off;

static void axp20x_power_off(void)

{
@@ -956,6 +965,19 @@ int axp20x_match_device(struct axp20x_dev *axp20x) 
		axp20x->regmap_cfg = &axp22x_regmap_config;

		axp20x->regmap_irq_chip = &axp809_regmap_irq_chip;

		break;

	case AXP813_ID:

		axp20x->nr_cells = ARRAY_SIZE(axp813_cells);

		axp20x->cells = axp813_cells;

		axp20x->regmap_cfg = &axp288_regmap_config;

		/*

		 * The IRQ table given in the datasheet is incorrect.

		 * In IRQ enable/status registers 1, there are separate

		 * IRQs for ACIN and VBUS, instead of bits [7:5] being

		 * the same as bits [4:2]. So it shares the same IRQs

		 * as the AXP803, rather than the AXP288.

		 */

		axp20x->regmap_irq_chip = &axp803_regmap_irq_chip;

		break;

	default:

		dev_err(dev, "unsupported AXP20X ID %lu\n", axp20x->variant);

		return -EINVAL;

include/linux/mfd/axp20x.h

+29 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ enum axp20x_variants { 
	AXP803_ID,

	AXP806_ID,

	AXP809_ID,

	AXP813_ID,

	NR_AXP20X_VARIANTS,

};
@@ -387,6 +388,34 @@ enum { 
	AXP803_REG_ID_MAX,

};



enum {

	AXP813_DCDC1 = 0,

	AXP813_DCDC2,

	AXP813_DCDC3,

	AXP813_DCDC4,

	AXP813_DCDC5,

	AXP813_DCDC6,

	AXP813_DCDC7,

	AXP813_ALDO1,

	AXP813_ALDO2,

	AXP813_ALDO3,

	AXP813_DLDO1,

	AXP813_DLDO2,

	AXP813_DLDO3,

	AXP813_DLDO4,

	AXP813_ELDO1,

	AXP813_ELDO2,

	AXP813_ELDO3,

	AXP813_FLDO1,

	AXP813_FLDO2,

	AXP813_FLDO3,

	AXP813_RTC_LDO,

	AXP813_LDO_IO0,

	AXP813_LDO_IO1,

	AXP813_SW,

	AXP813_REG_ID_MAX,

};



/* IRQs */

enum {

	AXP152_IRQ_LDO0IN_CONNECT = 1,