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: Michal Suchanek <hramrach@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

2 files changed, 143 insertions, 1 deletions

diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 8c2c3c4c9a56..b369cfce866c 100644
--- a/drivers/mfd/axp20x.c
+++ b/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);
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index c2aa853fb412..52203d5f7984 100644
--- a/include/linux/mfd/axp20x.h
+++ b/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
@@ -218,6 +257,26 @@ 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,
         AXP20X_IRQ_ACIN_REMOVAL,