mfd: axp20x: Add support for AXP717 PMIC

The AXP717a is a PMIC chip produced by X-Powers, it can be connected to
an I2C or RSB bus.

It's a rather complete PMIC, with many regulators, interrupts, an ADC and
battery charging functionality. It also offer USB type-C CC pin
handling.

Describe the regmap and the MFD bits, along with the registers exposed
via I2C or RSB. This covers the regulator, interrupts and power key
devices for now.
Advertise the device using the new compatible string.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Tested-by: Ryan Walklin <ryan@testtoast.com>
Link: https://lore.kernel.org/r/20240310010211.28653-4-andre.przywara@arm.com
Signed-off-by: Lee Jones <lee@kernel.org>

3 files changed, 93 insertions, 0 deletions

diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
index 68d3560cfe4a..b8e7ac89f697 100644
--- a/drivers/mfd/axp20x-i2c.c
+++ b/drivers/mfd/axp20x-i2c.c
@@ -65,6 +65,7 @@ static const struct of_device_id axp20x_i2c_of_match[] = {
 	{ .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
 	{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
 	{ .compatible = "x-powers,axp313a", .data = (void *)AXP313A_ID },
+	{ .compatible = "x-powers,axp717", .data = (void *)AXP717_ID },
 	{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
 	{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
 	{ .compatible = "x-powers,axp15060", .data = (void *)AXP15060_ID },
@@ -81,6 +82,7 @@ static const struct i2c_device_id axp20x_i2c_id[] = {
 	{ "axp221", 0 },
 	{ "axp223", 0 },
 	{ "axp313a", 0 },
+	{ "axp717", 0 },
 	{ "axp803", 0 },
 	{ "axp806", 0 },
 	{ "axp15060", 0 },
diff --git a/drivers/mfd/axp20x-rsb.c b/drivers/mfd/axp20x-rsb.c
index 214bc0d84d44..059656f2a1bd 100644
--- a/drivers/mfd/axp20x-rsb.c
+++ b/drivers/mfd/axp20x-rsb.c
@@ -58,6 +58,7 @@ static void axp20x_rsb_remove(struct sunxi_rsb_device *rdev)
 
 static const struct of_device_id axp20x_rsb_of_match[] = {
 	{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
+	{ .compatible = "x-powers,axp717", .data = (void *)AXP717_ID },
 	{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
 	{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
 	{ .compatible = "x-powers,axp809", .data = (void *)AXP809_ID },
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index d8daa593ebd5..48ce6ea693ce 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -42,6 +42,7 @@ static const char * const axp20x_model_names[] = {
 	"AXP223",
 	"AXP288",
 	"AXP313a",
+	"AXP717",
 	"AXP803",
 	"AXP806",
 	"AXP809",
@@ -207,6 +208,25 @@ static const struct regmap_access_table axp313a_volatile_table = {
 	.n_yes_ranges = ARRAY_SIZE(axp313a_volatile_ranges),
 };
 
+static const struct regmap_range axp717_writeable_ranges[] = {
+	regmap_reg_range(AXP717_IRQ0_EN, AXP717_IRQ4_EN),
+	regmap_reg_range(AXP717_DCDC_OUTPUT_CONTROL, AXP717_CPUSLDO_CONTROL),
+};
+
+static const struct regmap_range axp717_volatile_ranges[] = {
+	regmap_reg_range(AXP717_IRQ0_STATE, AXP717_IRQ4_STATE),
+};
+
+static const struct regmap_access_table axp717_writeable_table = {
+	.yes_ranges = axp717_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(axp717_writeable_ranges),
+};
+
+static const struct regmap_access_table axp717_volatile_table = {
+	.yes_ranges = axp717_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(axp717_volatile_ranges),
+};
+
 static const struct regmap_range axp806_volatile_ranges[] = {
 	regmap_reg_range(AXP20X_IRQ1_STATE, AXP20X_IRQ2_STATE),
 };
@@ -317,6 +337,11 @@ static const struct resource axp313a_pek_resources[] = {
 	DEFINE_RES_IRQ_NAMED(AXP313A_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
 };
 
+static const struct resource axp717_pek_resources[] = {
+	DEFINE_RES_IRQ_NAMED(AXP717_IRQ_PEK_RIS_EDGE, "PEK_DBR"),
+	DEFINE_RES_IRQ_NAMED(AXP717_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
+};
+
 static const struct resource axp803_pek_resources[] = {
 	DEFINE_RES_IRQ_NAMED(AXP803_IRQ_PEK_RIS_EDGE, "PEK_DBR"),
 	DEFINE_RES_IRQ_NAMED(AXP803_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
@@ -391,6 +416,15 @@ static const struct regmap_config axp313a_regmap_config = {
 	.cache_type = REGCACHE_MAPLE,
 };
 
+static const struct regmap_config axp717_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.wr_table = &axp717_writeable_table,
+	.volatile_table = &axp717_volatile_table,
+	.max_register = AXP717_CPUSLDO_CONTROL,
+	.cache_type = REGCACHE_RBTREE,
+};
+
 static const struct regmap_config axp806_regmap_config = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
@@ -589,6 +623,40 @@ static const struct regmap_irq axp313a_regmap_irqs[] = {
 	INIT_REGMAP_IRQ(AXP313A, DIE_TEMP_HIGH,		0, 0),
 };
 
+static const struct regmap_irq axp717_regmap_irqs[] = {
+	INIT_REGMAP_IRQ(AXP717, SOC_DROP_LVL2,		0, 7),
+	INIT_REGMAP_IRQ(AXP717, SOC_DROP_LVL1,		0, 6),
+	INIT_REGMAP_IRQ(AXP717, GAUGE_NEW_SOC,		0, 4),
+	INIT_REGMAP_IRQ(AXP717, BOOST_OVER_V,		0, 2),
+	INIT_REGMAP_IRQ(AXP717, VBUS_OVER_V,		0, 1),
+	INIT_REGMAP_IRQ(AXP717, VBUS_FAULT,		0, 0),
+	INIT_REGMAP_IRQ(AXP717, VBUS_PLUGIN,		1, 7),
+	INIT_REGMAP_IRQ(AXP717, VBUS_REMOVAL,		1, 6),
+	INIT_REGMAP_IRQ(AXP717, BATT_PLUGIN,		1, 5),
+	INIT_REGMAP_IRQ(AXP717, BATT_REMOVAL,		1, 4),
+	INIT_REGMAP_IRQ(AXP717, PEK_SHORT,		1, 3),
+	INIT_REGMAP_IRQ(AXP717, PEK_LONG,		1, 2),
+	INIT_REGMAP_IRQ(AXP717, PEK_FAL_EDGE,		1, 1),
+	INIT_REGMAP_IRQ(AXP717, PEK_RIS_EDGE,		1, 0),
+	INIT_REGMAP_IRQ(AXP717, WDOG_EXPIRE,		2, 7),
+	INIT_REGMAP_IRQ(AXP717, LDO_OVER_CURR,		2, 6),
+	INIT_REGMAP_IRQ(AXP717, BATT_OVER_CURR,		2, 5),
+	INIT_REGMAP_IRQ(AXP717, CHARG_DONE,		2, 4),
+	INIT_REGMAP_IRQ(AXP717, CHARG,			2, 3),
+	INIT_REGMAP_IRQ(AXP717, DIE_TEMP_HIGH,		2, 2),
+	INIT_REGMAP_IRQ(AXP717, CHARG_TIMER,		2, 1),
+	INIT_REGMAP_IRQ(AXP717, BATT_OVER_V,		2, 0),
+	INIT_REGMAP_IRQ(AXP717, BC_USB_DONE,		3, 7),
+	INIT_REGMAP_IRQ(AXP717, BC_USB_CHNG,		3, 6),
+	INIT_REGMAP_IRQ(AXP717, BATT_QUIT_TEMP_HIGH,	3, 4),
+	INIT_REGMAP_IRQ(AXP717, BATT_CHG_TEMP_HIGH,	3, 3),
+	INIT_REGMAP_IRQ(AXP717, BATT_CHG_TEMP_LOW,	3, 2),
+	INIT_REGMAP_IRQ(AXP717, BATT_ACT_TEMP_HIGH,	3, 1),
+	INIT_REGMAP_IRQ(AXP717, BATT_ACT_TEMP_LOW,	3, 0),
+	INIT_REGMAP_IRQ(AXP717, TYPEC_REMOVE,		4, 6),
+	INIT_REGMAP_IRQ(AXP717, TYPEC_PLUGIN,		4, 5),
+};
+
 static const struct regmap_irq axp803_regmap_irqs[] = {
 	INIT_REGMAP_IRQ(AXP803, ACIN_OVER_V,		0, 7),
 	INIT_REGMAP_IRQ(AXP803, ACIN_PLUGIN,		0, 6),
@@ -776,6 +844,17 @@ static const struct regmap_irq_chip axp313a_regmap_irq_chip = {
 	.num_regs		= 1,
 };
 
+static const struct regmap_irq_chip axp717_regmap_irq_chip = {
+	.name			= "axp717_irq_chip",
+	.status_base		= AXP717_IRQ0_STATE,
+	.ack_base		= AXP717_IRQ0_STATE,
+	.unmask_base		= AXP717_IRQ0_EN,
+	.init_ack_masked	= true,
+	.irqs			= axp717_regmap_irqs,
+	.num_irqs		= ARRAY_SIZE(axp717_regmap_irqs),
+	.num_regs		= 5,
+};
+
 static const struct regmap_irq_chip axp803_regmap_irq_chip = {
 	.name			= "axp803",
 	.status_base		= AXP20X_IRQ1_STATE,
@@ -941,6 +1020,11 @@ static struct mfd_cell axp313a_cells[] = {
 	MFD_CELL_RES("axp313a-pek", axp313a_pek_resources),
 };
 
+static struct mfd_cell axp717_cells[] = {
+	MFD_CELL_NAME("axp20x-regulator"),
+	MFD_CELL_RES("axp20x-pek", axp717_pek_resources),
+};
+
 static const struct resource axp288_adc_resources[] = {
 	DEFINE_RES_IRQ_NAMED(AXP288_IRQ_GPADC, "GPADC"),
 };
@@ -1181,6 +1265,12 @@ int axp20x_match_device(struct axp20x_dev *axp20x)
 		axp20x->regmap_cfg = &axp313a_regmap_config;
 		axp20x->regmap_irq_chip = &axp313a_regmap_irq_chip;
 		break;
+	case AXP717_ID:
+		axp20x->nr_cells = ARRAY_SIZE(axp717_cells);
+		axp20x->cells = axp717_cells;
+		axp20x->regmap_cfg = &axp717_regmap_config;
+		axp20x->regmap_irq_chip = &axp717_regmap_irq_chip;
+		break;
 	case AXP803_ID:
 		axp20x->nr_cells = ARRAY_SIZE(axp803_cells);
 		axp20x->cells = axp803_cells;