mfd: axp20x: Add support for AXP809 PMIC

The X-Powers AXP809 is a new PMIC that is paired with Allwinner's A80
SoC, along with a slave AXP806 PMIC.

This PMIC is quite similar to the earlier AXP223, though the interrupts
and regulator have changed a bit.

This patch adds support for the interrupts and power button of the PMIC.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

2 files changed, 80 insertions, 0 deletions

diff --git a/drivers/mfd/axp20x-rsb.c b/drivers/mfd/axp20x-rsb.c
index 28c20247c112..a407527bcd09 100644
--- a/drivers/mfd/axp20x-rsb.c
+++ b/drivers/mfd/axp20x-rsb.c
@@ -61,6 +61,7 @@ static int 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,axp809", .data = (void *)AXP809_ID },
         { },
 };
 MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match);
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index a57d6e940610..1ce923277cc8 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -37,6 +37,7 @@ static const char * const axp20x_model_names[] = {
         "AXP221",
         "AXP223",
         "AXP288",
+        "AXP809",
 };
 
 static const struct regmap_range axp152_writeable_ranges[] = {
@@ -85,6 +86,7 @@ static const struct regmap_access_table axp20x_volatile_table = {
         .n_yes_ranges   = ARRAY_SIZE(axp20x_volatile_ranges),
 };
 
+/* AXP22x ranges are shared with the AXP809, as they cover the same range */
 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),
@@ -211,6 +213,20 @@ static struct resource axp288_fuel_gauge_resources[] = {
         },
 };
 
+static struct resource axp809_pek_resources[] = {
+        {
+                .name   = "PEK_DBR",
+                .start  = AXP809_IRQ_PEK_RIS_EDGE,
+                .end    = AXP809_IRQ_PEK_RIS_EDGE,
+                .flags  = IORESOURCE_IRQ,
+        }, {
+                .name   = "PEK_DBF",
+                .start  = AXP809_IRQ_PEK_FAL_EDGE,
+                .end    = AXP809_IRQ_PEK_FAL_EDGE,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
 static const struct regmap_config axp152_regmap_config = {
         .reg_bits       = 8,
         .val_bits       = 8,
@@ -378,6 +394,41 @@ static const struct regmap_irq axp288_regmap_irqs[] = {
         INIT_REGMAP_IRQ(AXP288, BC_USB_CHNG,            5, 1),
 };
 
+static const struct regmap_irq axp809_regmap_irqs[] = {
+        INIT_REGMAP_IRQ(AXP809, ACIN_OVER_V,            0, 7),
+        INIT_REGMAP_IRQ(AXP809, ACIN_PLUGIN,            0, 6),
+        INIT_REGMAP_IRQ(AXP809, ACIN_REMOVAL,           0, 5),
+        INIT_REGMAP_IRQ(AXP809, VBUS_OVER_V,            0, 4),
+        INIT_REGMAP_IRQ(AXP809, VBUS_PLUGIN,            0, 3),
+        INIT_REGMAP_IRQ(AXP809, VBUS_REMOVAL,           0, 2),
+        INIT_REGMAP_IRQ(AXP809, VBUS_V_LOW,             0, 1),
+        INIT_REGMAP_IRQ(AXP809, BATT_PLUGIN,            1, 7),
+        INIT_REGMAP_IRQ(AXP809, BATT_REMOVAL,           1, 6),
+        INIT_REGMAP_IRQ(AXP809, BATT_ENT_ACT_MODE,      1, 5),
+        INIT_REGMAP_IRQ(AXP809, BATT_EXIT_ACT_MODE,     1, 4),
+        INIT_REGMAP_IRQ(AXP809, CHARG,                  1, 3),
+        INIT_REGMAP_IRQ(AXP809, CHARG_DONE,             1, 2),
+        INIT_REGMAP_IRQ(AXP809, BATT_CHG_TEMP_HIGH,     2, 7),
+        INIT_REGMAP_IRQ(AXP809, BATT_CHG_TEMP_HIGH_END, 2, 6),
+        INIT_REGMAP_IRQ(AXP809, BATT_CHG_TEMP_LOW,      2, 5),
+        INIT_REGMAP_IRQ(AXP809, BATT_CHG_TEMP_LOW_END,  2, 4),
+        INIT_REGMAP_IRQ(AXP809, BATT_ACT_TEMP_HIGH,     2, 3),
+        INIT_REGMAP_IRQ(AXP809, BATT_ACT_TEMP_HIGH_END, 2, 2),
+        INIT_REGMAP_IRQ(AXP809, BATT_ACT_TEMP_LOW,      2, 1),
+        INIT_REGMAP_IRQ(AXP809, BATT_ACT_TEMP_LOW_END,  2, 0),
+        INIT_REGMAP_IRQ(AXP809, DIE_TEMP_HIGH,          3, 7),
+        INIT_REGMAP_IRQ(AXP809, LOW_PWR_LVL1,           3, 1),
+        INIT_REGMAP_IRQ(AXP809, LOW_PWR_LVL2,           3, 0),
+        INIT_REGMAP_IRQ(AXP809, TIMER,                  4, 7),
+        INIT_REGMAP_IRQ(AXP809, PEK_RIS_EDGE,           4, 6),
+        INIT_REGMAP_IRQ(AXP809, PEK_FAL_EDGE,           4, 5),
+        INIT_REGMAP_IRQ(AXP809, PEK_SHORT,              4, 4),
+        INIT_REGMAP_IRQ(AXP809, PEK_LONG,               4, 3),
+        INIT_REGMAP_IRQ(AXP809, PEK_OVER_OFF,           4, 2),
+        INIT_REGMAP_IRQ(AXP809, GPIO1_INPUT,            4, 1),
+        INIT_REGMAP_IRQ(AXP809, GPIO0_INPUT,            4, 0),
+};
+
 static const struct regmap_irq_chip axp152_regmap_irq_chip = {
         .name                   = "axp152_irq_chip",
         .status_base            = AXP152_IRQ1_STATE,
@@ -428,6 +479,18 @@ static const struct regmap_irq_chip axp288_regmap_irq_chip = {
 
 };
 
+static const struct regmap_irq_chip axp809_regmap_irq_chip = {
+        .name                   = "axp809",
+        .status_base            = AXP20X_IRQ1_STATE,
+        .ack_base               = AXP20X_IRQ1_STATE,
+        .mask_base              = AXP20X_IRQ1_EN,
+        .mask_invert            = true,
+        .init_ack_masked        = true,
+        .irqs                   = axp809_regmap_irqs,
+        .num_irqs               = ARRAY_SIZE(axp809_regmap_irqs),
+        .num_regs               = 5,
+};
+
 static struct mfd_cell axp20x_cells[] = {
         {
                 .name           = "axp20x-pek",
@@ -572,6 +635,16 @@ static struct mfd_cell axp288_cells[] = {
         },
 };
 
+static struct mfd_cell axp809_cells[] = {
+        {
+                .name                   = "axp20x-pek",
+                .num_resources          = ARRAY_SIZE(axp809_pek_resources),
+                .resources              = axp809_pek_resources,
+        }, {
+                .name                   = "axp20x-regulator",
+        },
+};
+
 static struct axp20x_dev *axp20x_pm_power_off;
 static void axp20x_power_off(void)
 {
@@ -631,6 +704,12 @@ int axp20x_match_device(struct axp20x_dev *axp20x)
                 axp20x->regmap_cfg = &axp288_regmap_config;
                 axp20x->regmap_irq_chip = &axp288_regmap_irq_chip;
                 break;
+        case AXP809_ID:
+                axp20x->nr_cells = ARRAY_SIZE(axp809_cells);
+                axp20x->cells = axp809_cells;
+                axp20x->regmap_cfg = &axp22x_regmap_config;
+                axp20x->regmap_irq_chip = &axp809_regmap_irq_chip;
+                break;
         default:
                 dev_err(dev, "unsupported AXP20X ID %lu\n", axp20x->variant);
                 return -EINVAL;