--- /dev/null
+From f05be589ff32e87821b86845625ed3d402d37dc7 Mon Sep 17 00:00:00 2001
+From: Boris BREZILLON <boris.brezillon@free-electrons.com>
+Date: Fri, 10 Apr 2015 12:09:01 +0800
+Subject: [PATCH] mfd: axp20x: Add AXP22x PMIC support
+
+Add support for the AXP22x PMIC devices to the existing AXP20x driver.
+This includes the AXP221 and AXP223, which are identical except for
+the external data bus. Only AXP221 is added for now. AXP223 will be
+added after it's Reduced Serial Bus (RSB) interface is supported.
+
+AXP22x defines a new set of registers, power supplies and regulators,
+but most of the API is similar to the AXP20x ones.
+
+A new irq chip definition is used, even though the available interrupts
+on AXP22x is a subset of those on AXP20x. This is done so the interrupt
+numbers match those on the datasheet.
+
+This patch only enables the interrupts, system power-off function, and PEK
+sub-device. The regulator driver must first support different variants
+before we enable it from the mfd driver.
+
+Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
+[wens@csie.org: fix interrupts and move regulators to separate patch]
+Signed-off-by: Chen-Yu Tsai <wens@csie.org>
+Signed-off-by: Lee Jones <lee.jones@linaro.org>
+---
+ drivers/mfd/axp20x.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++
+ include/linux/mfd/axp20x.h | 86 ++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 184 insertions(+)
+
+diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
+index d18029b..cfbb7d7 100644
+--- a/drivers/mfd/axp20x.c
++++ b/drivers/mfd/axp20x.c
+@@ -32,6 +32,7 @@
+ static const char * const axp20x_model_names[] = {
+ "AXP202",
+ "AXP209",
++ "AXP221",
+ "AXP288",
+ };
+
+@@ -54,6 +55,25 @@ static const struct regmap_access_table axp20x_volatile_table = {
+ .n_yes_ranges = ARRAY_SIZE(axp20x_volatile_ranges),
+ };
+
++static const struct regmap_range axp22x_writeable_ranges[] = {
++ regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
++ regmap_reg_range(AXP20X_DCDC_MODE, AXP22X_BATLOW_THRES1),
++};
++
++static const struct regmap_range axp22x_volatile_ranges[] = {
++ regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IRQ5_STATE),
++};
++
++static const struct regmap_access_table axp22x_writeable_table = {
++ .yes_ranges = axp22x_writeable_ranges,
++ .n_yes_ranges = ARRAY_SIZE(axp22x_writeable_ranges),
++};
++
++static const struct regmap_access_table axp22x_volatile_table = {
++ .yes_ranges = axp22x_volatile_ranges,
++ .n_yes_ranges = ARRAY_SIZE(axp22x_volatile_ranges),
++};
++
+ static const struct regmap_range axp288_writeable_ranges[] = {
+ regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ6_STATE),
+ regmap_reg_range(AXP20X_DCDC_MODE, AXP288_FG_TUNE5),
+@@ -87,6 +107,20 @@ static struct resource axp20x_pek_resources[] = {
+ },
+ };
+
++static struct resource axp22x_pek_resources[] = {
++ {
++ .name = "PEK_DBR",
++ .start = AXP22X_IRQ_PEK_RIS_EDGE,
++ .end = AXP22X_IRQ_PEK_RIS_EDGE,
++ .flags = IORESOURCE_IRQ,
++ }, {
++ .name = "PEK_DBF",
++ .start = AXP22X_IRQ_PEK_FAL_EDGE,
++ .end = AXP22X_IRQ_PEK_FAL_EDGE,
++ .flags = IORESOURCE_IRQ,
++ },
++};
++
+ static struct resource axp288_fuel_gauge_resources[] = {
+ {
+ .start = AXP288_IRQ_QWBTU,
+@@ -129,6 +163,15 @@ static const struct regmap_config axp20x_regmap_config = {
+ .cache_type = REGCACHE_RBTREE,
+ };
+
++static const struct regmap_config axp22x_regmap_config = {
++ .reg_bits = 8,
++ .val_bits = 8,
++ .wr_table = &axp22x_writeable_table,
++ .volatile_table = &axp22x_volatile_table,
++ .max_register = AXP22X_BATLOW_THRES1,
++ .cache_type = REGCACHE_RBTREE,
++};
++
+ static const struct regmap_config axp288_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+@@ -181,6 +224,34 @@ static const struct regmap_irq axp20x_regmap_irqs[] = {
+ INIT_REGMAP_IRQ(AXP20X, GPIO0_INPUT, 4, 0),
+ };
+
++static const struct regmap_irq axp22x_regmap_irqs[] = {
++ INIT_REGMAP_IRQ(AXP22X, ACIN_OVER_V, 0, 7),
++ INIT_REGMAP_IRQ(AXP22X, ACIN_PLUGIN, 0, 6),
++ INIT_REGMAP_IRQ(AXP22X, ACIN_REMOVAL, 0, 5),
++ INIT_REGMAP_IRQ(AXP22X, VBUS_OVER_V, 0, 4),
++ INIT_REGMAP_IRQ(AXP22X, VBUS_PLUGIN, 0, 3),
++ INIT_REGMAP_IRQ(AXP22X, VBUS_REMOVAL, 0, 2),
++ INIT_REGMAP_IRQ(AXP22X, VBUS_V_LOW, 0, 1),
++ INIT_REGMAP_IRQ(AXP22X, BATT_PLUGIN, 1, 7),
++ INIT_REGMAP_IRQ(AXP22X, BATT_REMOVAL, 1, 6),
++ INIT_REGMAP_IRQ(AXP22X, BATT_ENT_ACT_MODE, 1, 5),
++ INIT_REGMAP_IRQ(AXP22X, BATT_EXIT_ACT_MODE, 1, 4),
++ INIT_REGMAP_IRQ(AXP22X, CHARG, 1, 3),
++ INIT_REGMAP_IRQ(AXP22X, CHARG_DONE, 1, 2),
++ INIT_REGMAP_IRQ(AXP22X, BATT_TEMP_HIGH, 1, 1),
++ INIT_REGMAP_IRQ(AXP22X, BATT_TEMP_LOW, 1, 0),
++ INIT_REGMAP_IRQ(AXP22X, DIE_TEMP_HIGH, 2, 7),
++ INIT_REGMAP_IRQ(AXP22X, PEK_SHORT, 2, 1),
++ INIT_REGMAP_IRQ(AXP22X, PEK_LONG, 2, 0),
++ INIT_REGMAP_IRQ(AXP22X, LOW_PWR_LVL1, 3, 1),
++ INIT_REGMAP_IRQ(AXP22X, LOW_PWR_LVL2, 3, 0),
++ INIT_REGMAP_IRQ(AXP22X, TIMER, 4, 7),
++ INIT_REGMAP_IRQ(AXP22X, PEK_RIS_EDGE, 4, 6),
++ INIT_REGMAP_IRQ(AXP22X, PEK_FAL_EDGE, 4, 5),
++ INIT_REGMAP_IRQ(AXP22X, GPIO1_INPUT, 4, 1),
++ INIT_REGMAP_IRQ(AXP22X, GPIO0_INPUT, 4, 0),
++};
++
+ /* some IRQs are compatible with axp20x models */
+ static const struct regmap_irq axp288_regmap_irqs[] = {
+ INIT_REGMAP_IRQ(AXP288, VBUS_FALL, 0, 2),
+@@ -224,6 +295,7 @@ static const struct regmap_irq axp288_regmap_irqs[] = {
+ static const struct of_device_id axp20x_of_match[] = {
+ { .compatible = "x-powers,axp202", .data = (void *) AXP202_ID },
+ { .compatible = "x-powers,axp209", .data = (void *) AXP209_ID },
++ { .compatible = "x-powers,axp221", .data = (void *) AXP221_ID },
+ { },
+ };
+ MODULE_DEVICE_TABLE(of, axp20x_of_match);
+@@ -258,6 +330,18 @@ static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
+
+ };
+
++static const struct regmap_irq_chip axp22x_regmap_irq_chip = {
++ .name = "axp22x_irq_chip",
++ .status_base = AXP20X_IRQ1_STATE,
++ .ack_base = AXP20X_IRQ1_STATE,
++ .mask_base = AXP20X_IRQ1_EN,
++ .mask_invert = true,
++ .init_ack_masked = true,
++ .irqs = axp22x_regmap_irqs,
++ .num_irqs = ARRAY_SIZE(axp22x_regmap_irqs),
++ .num_regs = 5,
++};
++
+ static const struct regmap_irq_chip axp288_regmap_irq_chip = {
+ .name = "axp288_irq_chip",
+ .status_base = AXP20X_IRQ1_STATE,
+@@ -281,6 +365,14 @@ static struct mfd_cell axp20x_cells[] = {
+ },
+ };
+
++static struct mfd_cell axp22x_cells[] = {
++ {
++ .name = "axp20x-pek",
++ .num_resources = ARRAY_SIZE(axp22x_pek_resources),
++ .resources = axp22x_pek_resources,
++ },
++};
++
+ static struct resource axp288_adc_resources[] = {
+ {
+ .name = "GPADC",
+@@ -426,6 +518,12 @@ static int axp20x_match_device(struct axp20x_dev *axp20x, struct device *dev)
+ axp20x->regmap_cfg = &axp20x_regmap_config;
+ axp20x->regmap_irq_chip = &axp20x_regmap_irq_chip;
+ break;
++ case AXP221_ID:
++ axp20x->nr_cells = ARRAY_SIZE(axp22x_cells);
++ axp20x->cells = axp22x_cells;
++ axp20x->regmap_cfg = &axp22x_regmap_config;
++ axp20x->regmap_irq_chip = &axp22x_regmap_irq_chip;
++ break;
+ case AXP288_ID:
+ axp20x->cells = axp288_cells;
+ axp20x->nr_cells = ARRAY_SIZE(axp288_cells);
+diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
+index dfabd6d..95568eb 100644
+--- a/include/linux/mfd/axp20x.h
++++ b/include/linux/mfd/axp20x.h
+@@ -14,6 +14,7 @@
+ enum {
+ AXP202_ID = 0,
+ AXP209_ID,
++ AXP221_ID,
+ AXP288_ID,
+ NR_AXP20X_VARIANTS,
+ };
+@@ -45,6 +46,28 @@ enum {
+ #define AXP20X_V_LTF_DISCHRG 0x3c
+ #define AXP20X_V_HTF_DISCHRG 0x3d
+
++#define AXP22X_PWR_OUT_CTRL1 0x10
++#define AXP22X_PWR_OUT_CTRL2 0x12
++#define AXP22X_PWR_OUT_CTRL3 0x13
++#define AXP22X_DLDO1_V_OUT 0x15
++#define AXP22X_DLDO2_V_OUT 0x16
++#define AXP22X_DLDO3_V_OUT 0x17
++#define AXP22X_DLDO4_V_OUT 0x18
++#define AXP22X_ELDO1_V_OUT 0x19
++#define AXP22X_ELDO2_V_OUT 0x1a
++#define AXP22X_ELDO3_V_OUT 0x1b
++#define AXP22X_DC5LDO_V_OUT 0x1c
++#define AXP22X_DCDC1_V_OUT 0x21
++#define AXP22X_DCDC2_V_OUT 0x22
++#define AXP22X_DCDC3_V_OUT 0x23
++#define AXP22X_DCDC4_V_OUT 0x24
++#define AXP22X_DCDC5_V_OUT 0x25
++#define AXP22X_DCDC23_V_RAMP_CTRL 0x27
++#define AXP22X_ALDO1_V_OUT 0x28
++#define AXP22X_ALDO2_V_OUT 0x29
++#define AXP22X_ALDO3_V_OUT 0x2a
++#define AXP22X_CHRG_CTRL3 0x35
++
+ /* Interrupt */
+ #define AXP20X_IRQ1_EN 0x40
+ #define AXP20X_IRQ2_EN 0x41
+@@ -100,6 +123,9 @@ enum {
+ #define AXP20X_VBUS_MON 0x8b
+ #define AXP20X_OVER_TMP 0x8f
+
++#define AXP22X_PWREN_CTRL1 0x8c
++#define AXP22X_PWREN_CTRL2 0x8d
++
+ /* GPIO */
+ #define AXP20X_GPIO0_CTRL 0x90
+ #define AXP20X_LDO5_V_OUT 0x91
+@@ -108,6 +134,11 @@ enum {
+ #define AXP20X_GPIO20_SS 0x94
+ #define AXP20X_GPIO3_CTRL 0x95
+
++#define AXP22X_LDO_IO0_V_OUT 0x91
++#define AXP22X_LDO_IO1_V_OUT 0x93
++#define AXP22X_GPIO_STATE 0x94
++#define AXP22X_GPIO_PULL_DOWN 0x95
++
+ /* Battery */
+ #define AXP20X_CHRG_CC_31_24 0xb0
+ #define AXP20X_CHRG_CC_23_16 0xb1
+@@ -120,6 +151,9 @@ enum {
+ #define AXP20X_CC_CTRL 0xb8
+ #define AXP20X_FG_RES 0xb9
+
++/* AXP22X specific registers */
++#define AXP22X_BATLOW_THRES1 0xe6
++
+ /* AXP288 specific registers */
+ #define AXP288_PMIC_ADC_H 0x56
+ #define AXP288_PMIC_ADC_L 0x57
+@@ -158,6 +192,30 @@ enum {
+ AXP20X_REG_ID_MAX,
+ };
+
++enum {
++ AXP22X_DCDC1 = 0,
++ AXP22X_DCDC2,
++ AXP22X_DCDC3,
++ AXP22X_DCDC4,
++ AXP22X_DCDC5,
++ AXP22X_DC1SW,
++ AXP22X_DC5LDO,
++ AXP22X_ALDO1,
++ AXP22X_ALDO2,
++ AXP22X_ALDO3,
++ AXP22X_ELDO1,
++ AXP22X_ELDO2,
++ AXP22X_ELDO3,
++ AXP22X_DLDO1,
++ AXP22X_DLDO2,
++ AXP22X_DLDO3,
++ AXP22X_DLDO4,
++ AXP22X_RTC_LDO,
++ AXP22X_LDO_IO0,
++ AXP22X_LDO_IO1,
++ AXP22X_REG_ID_MAX,
++};
++
+ /* IRQs */
+ enum {
+ AXP20X_IRQ_ACIN_OVER_V = 1,
+@@ -199,6 +257,34 @@ enum {
+ AXP20X_IRQ_GPIO0_INPUT,
+ };
+
++enum axp22x_irqs {
++ AXP22X_IRQ_ACIN_OVER_V = 1,
++ AXP22X_IRQ_ACIN_PLUGIN,
++ AXP22X_IRQ_ACIN_REMOVAL,
++ AXP22X_IRQ_VBUS_OVER_V,
++ AXP22X_IRQ_VBUS_PLUGIN,
++ AXP22X_IRQ_VBUS_REMOVAL,
++ AXP22X_IRQ_VBUS_V_LOW,
++ AXP22X_IRQ_BATT_PLUGIN,
++ AXP22X_IRQ_BATT_REMOVAL,
++ AXP22X_IRQ_BATT_ENT_ACT_MODE,
++ AXP22X_IRQ_BATT_EXIT_ACT_MODE,
++ AXP22X_IRQ_CHARG,
++ AXP22X_IRQ_CHARG_DONE,
++ AXP22X_IRQ_BATT_TEMP_HIGH,
++ AXP22X_IRQ_BATT_TEMP_LOW,
++ AXP22X_IRQ_DIE_TEMP_HIGH,
++ AXP22X_IRQ_PEK_SHORT,
++ AXP22X_IRQ_PEK_LONG,
++ AXP22X_IRQ_LOW_PWR_LVL1,
++ AXP22X_IRQ_LOW_PWR_LVL2,
++ AXP22X_IRQ_TIMER,
++ AXP22X_IRQ_PEK_RIS_EDGE,
++ AXP22X_IRQ_PEK_FAL_EDGE,
++ AXP22X_IRQ_GPIO1_INPUT,
++ AXP22X_IRQ_GPIO0_INPUT,
++};
++
+ enum axp288_irqs {
+ AXP288_IRQ_VBUS_FALL = 2,
+ AXP288_IRQ_VBUS_RISE,
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