mfd: axp20x: Add axp152 support

The axp152 is a stripped down version of the axp202 pmic with the battery
charging function removed as it is intended for top-set boxes.
Signed-off-by: NMichal Suchanek <hramrach@gmail.com>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

drivers/mfd/axp20x.c

@@ -30,12 +30,34 @@
 #define AXP20X_OFF	0x80
 
 static const char * const axp20x_model_names[] = {
+	"AXP152",
 	"AXP202",
 	"AXP209",
 	"AXP221",
 	"AXP288",
 };
 
+static const struct regmap_range axp152_writeable_ranges[] = {
+	regmap_reg_range(AXP152_LDO3456_DC1234_CTRL, AXP152_IRQ3_STATE),
+	regmap_reg_range(AXP152_DCDC_MODE, AXP152_PWM1_DUTY_CYCLE),
+};
+
+static const struct regmap_range axp152_volatile_ranges[] = {
+	regmap_reg_range(AXP152_PWR_OP_MODE, AXP152_PWR_OP_MODE),
+	regmap_reg_range(AXP152_IRQ1_EN, AXP152_IRQ3_STATE),
+	regmap_reg_range(AXP152_GPIO_INPUT, AXP152_GPIO_INPUT),
+};
+
+static const struct regmap_access_table axp152_writeable_table = {
+	.yes_ranges	= axp152_writeable_ranges,
+	.n_yes_ranges	= ARRAY_SIZE(axp152_writeable_ranges),
+};
+
+static const struct regmap_access_table axp152_volatile_table = {
+	.yes_ranges	= axp152_volatile_ranges,
+	.n_yes_ranges	= ARRAY_SIZE(axp152_volatile_ranges),
+};
+
 static const struct regmap_range axp20x_writeable_ranges[] = {
 	regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
 	regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES),
@@ -93,6 +115,11 @@ static const struct regmap_access_table axp288_volatile_table = {
 	.n_yes_ranges	= ARRAY_SIZE(axp288_volatile_ranges),
 };
 
+static struct resource axp152_pek_resources[] = {
+	DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_RIS_EDGE, "PEK_DBR"),
+	DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
+};
+
 static struct resource axp20x_pek_resources[] = {
 	{
 		.name	= "PEK_DBR",
@@ -154,6 +181,15 @@ static struct resource axp288_fuel_gauge_resources[] = {
 	},
 };
 
+static const struct regmap_config axp152_regmap_config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.wr_table	= &axp152_writeable_table,
+	.volatile_table	= &axp152_volatile_table,
+	.max_register	= AXP152_PWM1_DUTY_CYCLE,
+	.cache_type	= REGCACHE_RBTREE,
+};
+
 static const struct regmap_config axp20x_regmap_config = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
@@ -184,6 +220,26 @@ static const struct regmap_config axp288_regmap_config = {
 #define INIT_REGMAP_IRQ(_variant, _irq, _off, _mask)			\
 	[_variant##_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) }
 
+static const struct regmap_irq axp152_regmap_irqs[] = {
+	INIT_REGMAP_IRQ(AXP152, LDO0IN_CONNECT,		0, 6),
+	INIT_REGMAP_IRQ(AXP152, LDO0IN_REMOVAL,		0, 5),
+	INIT_REGMAP_IRQ(AXP152, ALDO0IN_CONNECT,	0, 3),
+	INIT_REGMAP_IRQ(AXP152, ALDO0IN_REMOVAL,	0, 2),
+	INIT_REGMAP_IRQ(AXP152, DCDC1_V_LOW,		1, 5),
+	INIT_REGMAP_IRQ(AXP152, DCDC2_V_LOW,		1, 4),
+	INIT_REGMAP_IRQ(AXP152, DCDC3_V_LOW,		1, 3),
+	INIT_REGMAP_IRQ(AXP152, DCDC4_V_LOW,		1, 2),
+	INIT_REGMAP_IRQ(AXP152, PEK_SHORT,		1, 1),
+	INIT_REGMAP_IRQ(AXP152, PEK_LONG,		1, 0),
+	INIT_REGMAP_IRQ(AXP152, TIMER,			2, 7),
+	INIT_REGMAP_IRQ(AXP152, PEK_RIS_EDGE,		2, 6),
+	INIT_REGMAP_IRQ(AXP152, PEK_FAL_EDGE,		2, 5),
+	INIT_REGMAP_IRQ(AXP152, GPIO3_INPUT,		2, 3),
+	INIT_REGMAP_IRQ(AXP152, GPIO2_INPUT,		2, 2),
+	INIT_REGMAP_IRQ(AXP152, GPIO1_INPUT,		2, 1),
+	INIT_REGMAP_IRQ(AXP152, GPIO0_INPUT,		2, 0),
+};
+
 static const struct regmap_irq axp20x_regmap_irqs[] = {
 	INIT_REGMAP_IRQ(AXP20X, ACIN_OVER_V,		0, 7),
 	INIT_REGMAP_IRQ(AXP20X, ACIN_PLUGIN,		0, 6),
@@ -293,6 +349,7 @@ static const struct regmap_irq axp288_regmap_irqs[] = {
 };
 
 static const struct of_device_id axp20x_of_match[] = {
+	{ .compatible = "x-powers,axp152", .data = (void *) AXP152_ID },
 	{ .compatible = "x-powers,axp202", .data = (void *) AXP202_ID },
 	{ .compatible = "x-powers,axp209", .data = (void *) AXP209_ID },
 	{ .compatible = "x-powers,axp221", .data = (void *) AXP221_ID },
@@ -317,6 +374,18 @@ static const struct acpi_device_id axp20x_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, axp20x_acpi_match);
 
+static const struct regmap_irq_chip axp152_regmap_irq_chip = {
+	.name			= "axp152_irq_chip",
+	.status_base		= AXP152_IRQ1_STATE,
+	.ack_base		= AXP152_IRQ1_STATE,
+	.mask_base		= AXP152_IRQ1_EN,
+	.mask_invert		= true,
+	.init_ack_masked	= true,
+	.irqs			= axp152_regmap_irqs,
+	.num_irqs		= ARRAY_SIZE(axp152_regmap_irqs),
+	.num_regs		= 3,
+};
+
 static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
 	.name			= "axp20x_irq_chip",
 	.status_base		= AXP20X_IRQ1_STATE,
@@ -375,6 +444,14 @@ static struct mfd_cell axp22x_cells[] = {
 	},
 };
 
+static struct mfd_cell axp152_cells[] = {
+	{
+		.name			= "axp20x-pek",
+		.num_resources		= ARRAY_SIZE(axp152_pek_resources),
+		.resources		= axp152_pek_resources,
+	},
+};
+
 static struct resource axp288_adc_resources[] = {
 	{
 		.name  = "GPADC",
@@ -513,6 +590,12 @@ static int axp20x_match_device(struct axp20x_dev *axp20x, struct device *dev)
 	}
 
 	switch (axp20x->variant) {
+	case AXP152_ID:
+		axp20x->nr_cells = ARRAY_SIZE(axp152_cells);
+		axp20x->cells = axp152_cells;
+		axp20x->regmap_cfg = &axp152_regmap_config;
+		axp20x->regmap_irq_chip = &axp152_regmap_irq_chip;
+		break;
 	case AXP202_ID:
 	case AXP209_ID:
 		axp20x->nr_cells = ARRAY_SIZE(axp20x_cells);

include/linux/mfd/axp20x.h

@@ -12,7 +12,8 @@
 #define __LINUX_MFD_AXP20X_H
 
 enum {
-	AXP202_ID = 0,
+	AXP152_ID = 0,
+	AXP202_ID,
 	AXP209_ID,
 	AXP221_ID,
 	AXP288_ID,
@@ -22,6 +23,24 @@ enum {
 #define AXP20X_DATACACHE(m)		(0x04 + (m))
 
 /* Power supply */
+#define AXP152_PWR_OP_MODE		0x01
+#define AXP152_LDO3456_DC1234_CTRL	0x12
+#define AXP152_ALDO_OP_MODE		0x13
+#define AXP152_LDO0_CTRL		0x15
+#define AXP152_DCDC2_V_OUT		0x23
+#define AXP152_DCDC2_V_SCAL		0x25
+#define AXP152_DCDC1_V_OUT		0x26
+#define AXP152_DCDC3_V_OUT		0x27
+#define AXP152_ALDO12_V_OUT		0x28
+#define AXP152_DLDO1_V_OUT		0x29
+#define AXP152_DLDO2_V_OUT		0x2a
+#define AXP152_DCDC4_V_OUT		0x2b
+#define AXP152_V_OFF			0x31
+#define AXP152_OFF_CTRL			0x32
+#define AXP152_PEK_KEY			0x36
+#define AXP152_DCDC_FREQ		0x37
+#define AXP152_DCDC_MODE		0x80
+
 #define AXP20X_PWR_INPUT_STATUS		0x00
 #define AXP20X_PWR_OP_MODE		0x01
 #define AXP20X_USB_OTG_STATUS		0x02
@@ -69,6 +88,13 @@ enum {
 #define AXP22X_CHRG_CTRL3		0x35
 
 /* Interrupt */
+#define AXP152_IRQ1_EN			0x40
+#define AXP152_IRQ2_EN			0x41
+#define AXP152_IRQ3_EN			0x42
+#define AXP152_IRQ1_STATE		0x48
+#define AXP152_IRQ2_STATE		0x49
+#define AXP152_IRQ3_STATE		0x4a
+
 #define AXP20X_IRQ1_EN			0x40
 #define AXP20X_IRQ2_EN			0x41
 #define AXP20X_IRQ3_EN			0x42
@@ -127,6 +153,19 @@ enum {
 #define AXP22X_PWREN_CTRL2		0x8d
 
 /* GPIO */
+#define AXP152_GPIO0_CTRL		0x90
+#define AXP152_GPIO1_CTRL		0x91
+#define AXP152_GPIO2_CTRL		0x92
+#define AXP152_GPIO3_CTRL		0x93
+#define AXP152_LDOGPIO2_V_OUT		0x96
+#define AXP152_GPIO_INPUT		0x97
+#define AXP152_PWM0_FREQ_X		0x98
+#define AXP152_PWM0_FREQ_Y		0x99
+#define AXP152_PWM0_DUTY_CYCLE		0x9a
+#define AXP152_PWM1_FREQ_X		0x9b
+#define AXP152_PWM1_FREQ_Y		0x9c
+#define AXP152_PWM1_DUTY_CYCLE		0x9d
+
 #define AXP20X_GPIO0_CTRL		0x90
 #define AXP20X_LDO5_V_OUT		0x91
 #define AXP20X_GPIO1_CTRL		0x92
@@ -217,6 +256,26 @@ enum {
 };
 
 /* IRQs */
+enum {
+	AXP152_IRQ_LDO0IN_CONNECT = 1,
+	AXP152_IRQ_LDO0IN_REMOVAL,
+	AXP152_IRQ_ALDO0IN_CONNECT,
+	AXP152_IRQ_ALDO0IN_REMOVAL,
+	AXP152_IRQ_DCDC1_V_LOW,
+	AXP152_IRQ_DCDC2_V_LOW,
+	AXP152_IRQ_DCDC3_V_LOW,
+	AXP152_IRQ_DCDC4_V_LOW,
+	AXP152_IRQ_PEK_SHORT,
+	AXP152_IRQ_PEK_LONG,
+	AXP152_IRQ_TIMER,
+	AXP152_IRQ_PEK_RIS_EDGE,
+	AXP152_IRQ_PEK_FAL_EDGE,
+	AXP152_IRQ_GPIO3_INPUT,
+	AXP152_IRQ_GPIO2_INPUT,
+	AXP152_IRQ_GPIO1_INPUT,
+	AXP152_IRQ_GPIO0_INPUT,
+};
+
 enum {
 	AXP20X_IRQ_ACIN_OVER_V = 1,
 	AXP20X_IRQ_ACIN_PLUGIN,