AXP803 PMIC is register compatible with AXP813.

Added support for AXP803/AXP813 AC power supply.
AXP8x3 is capable to limit input current and minimum input voltage.
Both of these register values are writeable.

Signed-off-by: Oskari Lemmela <osk...@lemmela.net>
---
 drivers/iio/adc/axp20x_adc.c           |   1 +
 drivers/mfd/axp20x.c                   |  22 ++-
 drivers/pinctrl/pinctrl-axp209.c       |   1 +
 drivers/power/supply/axp20x_ac_power.c | 194 +++++++++++++++++++++++++
 drivers/power/supply/axp20x_battery.c  |   3 +
 include/linux/mfd/axp20x.h             |   1 +
 6 files changed, 221 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index 5be789269353..f919a16a8533 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -641,6 +641,7 @@ static const struct axp_data axp813_data = {
 static const struct of_device_id axp20x_adc_of_match[] = {
        { .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, },
        { .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, },
+       { .compatible = "x-powers,axp803-adc", .data = (void *)&axp813_data, },
        { .compatible = "x-powers,axp813-adc", .data = (void *)&axp813_data, },
        { /* sentinel */ }
 };
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 0be511dd93d0..c540f17549d5 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -731,8 +731,23 @@ static const struct mfd_cell axp803_cells[] = {
                .name                   = "axp221-pek",
                .num_resources          = ARRAY_SIZE(axp803_pek_resources),
                .resources              = axp803_pek_resources,
+       }, {
+               .name                   = "axp20x-regulator"
+       }, {
+               .name                   = "axp20x-gpio",
+               .of_compatible          = "x-powers,axp803-gpio",
+       }, {
+               .name                   = "axp813-adc",
+               .of_compatible          = "x-powers,axp803-adc",
+       }, {
+               .name           = "axp20x-battery-power-supply",
+               .of_compatible  = "x-powers,axp803-battery-power-supply",
+       }, {
+               .name           = "axp20x-ac-power-supply",
+               .of_compatible  = "x-powers,axp803-ac-power-supply",
+               .num_resources  = ARRAY_SIZE(axp20x_ac_power_supply_resources),
+               .resources      = axp20x_ac_power_supply_resources,
        },
-       {       .name                   = "axp20x-regulator" },
 };
 
 static const struct mfd_cell axp806_self_working_cells[] = {
@@ -778,6 +793,11 @@ static const struct mfd_cell axp813_cells[] = {
        }, {
                .name           = "axp20x-battery-power-supply",
                .of_compatible  = "x-powers,axp813-battery-power-supply",
+       }, {
+               .name           = "axp20x-ac-power-supply",
+               .of_compatible  = "x-powers,axp813-ac-power-supply",
+               .num_resources  = ARRAY_SIZE(axp20x_ac_power_supply_resources),
+               .resources      = axp20x_ac_power_supply_resources,
        },
 };
 
diff --git a/drivers/pinctrl/pinctrl-axp209.c b/drivers/pinctrl/pinctrl-axp209.c
index afd0b533c40a..21859579e0a2 100644
--- a/drivers/pinctrl/pinctrl-axp209.c
+++ b/drivers/pinctrl/pinctrl-axp209.c
@@ -387,6 +387,7 @@ static int axp20x_build_funcs_groups(struct platform_device 
*pdev)
 
 static const struct of_device_id axp20x_pctl_match[] = {
        { .compatible = "x-powers,axp209-gpio", .data = &axp20x_data, },
+       { .compatible = "x-powers,axp803-gpio", .data = &axp813_data, },
        { .compatible = "x-powers,axp813-gpio", .data = &axp813_data, },
        { }
 };
diff --git a/drivers/power/supply/axp20x_ac_power.c 
b/drivers/power/supply/axp20x_ac_power.c
index 0771f951b11f..3247efb81cd1 100644
--- a/drivers/power/supply/axp20x_ac_power.c
+++ b/drivers/power/supply/axp20x_ac_power.c
@@ -27,6 +27,23 @@
 #define AXP20X_PWR_STATUS_ACIN_PRESENT BIT(7)
 #define AXP20X_PWR_STATUS_ACIN_AVAIL   BIT(6)
 
+#define AXP8X3_PWR_ACIN_VHOLD          GENMASK(5, 3)
+#define AXP8X3_PWR_ACIN_VHOLD_4_0V     (0 << 3)
+#define AXP8X3_PWR_ACIN_VHOLD_4_1V     (1 << 3)
+#define AXP8X3_PWR_ACIN_VHOLD_4_2V     (2 << 3)
+#define AXP8X3_PWR_ACIN_VHOLD_4_3V     (3 << 3)
+#define AXP8X3_PWR_ACIN_VHOLD_4_4V     (4 << 3)
+#define AXP8X3_PWR_ACIN_VHOLD_4_5V     (5 << 3)
+#define AXP8X3_PWR_ACIN_VHOLD_4_6V     (6 << 3)
+#define AXP8X3_PWR_ACIN_VHOLD_4_7V     (7 << 3)
+#define AXP8X3_PWR_ACIN_CURR_LIMIT     GENMASK(2, 0)
+#define AXP8X3_PWR_ACIN_CURR_1_5A      0
+#define AXP8X3_PWR_ACIN_CURR_2_0A      1
+#define AXP8X3_PWR_ACIN_CURR_2_5A      2
+#define AXP8X3_PWR_ACIN_CURR_3_0A      3
+#define AXP8X3_PWR_ACIN_CURR_3_5A      4
+#define AXP8X3_PWR_ACIN_CURR_4_0A      5
+
 #define DRVNAME "axp20x-ac-power-supply"
 
 struct axp20x_ac_power {
@@ -102,6 +119,72 @@ static int axp20x_ac_power_get_property(struct 
power_supply *psy,
 
                return 0;
 
+       case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+               ret = regmap_read(power->regmap, AXP803_ACIN_PATH_CTRL, &reg);
+               if (ret)
+                       return ret;
+
+               switch (reg & AXP8X3_PWR_ACIN_VHOLD) {
+               case AXP8X3_PWR_ACIN_VHOLD_4_0V:
+                       val->intval = 4000000;
+                       break;
+               case AXP8X3_PWR_ACIN_VHOLD_4_1V:
+                       val->intval = 4100000;
+                       break;
+               case AXP8X3_PWR_ACIN_VHOLD_4_2V:
+                       val->intval = 4200000;
+                       break;
+               case AXP8X3_PWR_ACIN_VHOLD_4_3V:
+                       val->intval = 4300000;
+                       break;
+               case AXP8X3_PWR_ACIN_VHOLD_4_4V:
+                       val->intval = 4400000;
+                       break;
+               case AXP8X3_PWR_ACIN_VHOLD_4_5V:
+                       val->intval = 4500000;
+                       break;
+               case AXP8X3_PWR_ACIN_VHOLD_4_6V:
+                       val->intval = 4600000;
+                       break;
+               case AXP8X3_PWR_ACIN_VHOLD_4_7V:
+                       val->intval = 4700000;
+                       break;
+               default:
+                       return -EINVAL;
+               }
+
+               return 0;
+
+       case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+               ret = regmap_read(power->regmap, AXP803_ACIN_PATH_CTRL, &reg);
+               if (ret)
+                       return ret;
+
+               switch (reg & AXP8X3_PWR_ACIN_CURR_LIMIT) {
+               case AXP8X3_PWR_ACIN_CURR_1_5A:
+                       val->intval = 1500000;
+                       break;
+               case AXP8X3_PWR_ACIN_CURR_2_0A:
+                       val->intval = 2000000;
+                       break;
+               case AXP8X3_PWR_ACIN_CURR_2_5A:
+                       val->intval = 2500000;
+                       break;
+               case AXP8X3_PWR_ACIN_CURR_3_0A:
+                       val->intval = 3000000;
+                       break;
+               case AXP8X3_PWR_ACIN_CURR_3_5A:
+                       val->intval = 3500000;
+                       break;
+               case AXP8X3_PWR_ACIN_CURR_4_0A:
+                       val->intval = 4000000;
+                       break;
+               default:
+                       return -EINVAL;
+               }
+
+               return 0;
+
        default:
                return -EINVAL;
        }
@@ -109,6 +192,88 @@ static int axp20x_ac_power_get_property(struct 
power_supply *psy,
        return -EINVAL;
 }
 
+static int axp20x_ac_power_set_property(struct power_supply *psy,
+                                       enum power_supply_property psp,
+                                       const union power_supply_propval *val)
+{
+       struct axp20x_ac_power *power = power_supply_get_drvdata(psy);
+       int setval;
+
+       switch (psp) {
+       case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+               switch (val->intval) {
+               case 4000000:
+                       setval = AXP8X3_PWR_ACIN_VHOLD_4_0V;
+                       break;
+               case 4100000:
+                       setval = AXP8X3_PWR_ACIN_VHOLD_4_1V;
+                       break;
+               case 4200000:
+                       setval = AXP8X3_PWR_ACIN_VHOLD_4_2V;
+                       break;
+               case 4300000:
+                       setval = AXP8X3_PWR_ACIN_VHOLD_4_3V;
+                       break;
+               case 4400000:
+                       setval = AXP8X3_PWR_ACIN_VHOLD_4_4V;
+                       break;
+               case 4500000:
+                       setval = AXP8X3_PWR_ACIN_VHOLD_4_5V;
+                       break;
+               case 4600000:
+                       setval = AXP8X3_PWR_ACIN_VHOLD_4_6V;
+                       break;
+               case 4700000:
+                       setval = AXP8X3_PWR_ACIN_VHOLD_4_7V;
+                       break;
+
+               default:
+                       return -EINVAL;
+               }
+               return regmap_update_bits(power->regmap, AXP803_ACIN_PATH_CTRL,
+                                         AXP8X3_PWR_ACIN_VHOLD, setval);
+
+       case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+
+               switch (val->intval) {
+               case 1500000:
+                       setval = AXP8X3_PWR_ACIN_CURR_1_5A;
+                       break;
+               case 2000000:
+                       setval = AXP8X3_PWR_ACIN_CURR_2_0A;
+                       break;
+               case 2500000:
+                       setval = AXP8X3_PWR_ACIN_CURR_2_5A;
+                       break;
+               case 3000000:
+                       setval = AXP8X3_PWR_ACIN_CURR_3_0A;
+                       break;
+               case 3500000:
+                       setval = AXP8X3_PWR_ACIN_CURR_3_5A;
+                       break;
+               case 4000000:
+                       setval = AXP8X3_PWR_ACIN_CURR_4_0A;
+                       break;
+               default:
+                       return -EINVAL;
+               }
+               return regmap_update_bits(power->regmap, AXP803_ACIN_PATH_CTRL,
+                                         AXP8X3_PWR_ACIN_CURR_LIMIT, setval);
+
+       default:
+               return -EINVAL;
+       }
+
+       return -EINVAL;
+}
+
+static int axp20x_ac_power_prop_writeable(struct power_supply *psy,
+                                         enum power_supply_property psp)
+{
+       return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN ||
+              psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT;
+}
+
 static enum power_supply_property axp20x_ac_power_properties[] = {
        POWER_SUPPLY_PROP_HEALTH,
        POWER_SUPPLY_PROP_PRESENT,
@@ -123,6 +288,14 @@ static enum power_supply_property 
axp22x_ac_power_properties[] = {
        POWER_SUPPLY_PROP_ONLINE,
 };
 
+static enum power_supply_property axp8x3_ac_power_properties[] = {
+       POWER_SUPPLY_PROP_HEALTH,
+       POWER_SUPPLY_PROP_PRESENT,
+       POWER_SUPPLY_PROP_ONLINE,
+       POWER_SUPPLY_PROP_VOLTAGE_MIN,
+       POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+};
+
 static const struct power_supply_desc axp20x_ac_power_desc = {
        .name = "axp20x-ac",
        .type = POWER_SUPPLY_TYPE_MAINS,
@@ -139,6 +312,16 @@ static const struct power_supply_desc axp22x_ac_power_desc 
= {
        .get_property = axp20x_ac_power_get_property,
 };
 
+static const struct power_supply_desc axp8x3_ac_power_desc = {
+       .name = "axp8x3-ac",
+       .type = POWER_SUPPLY_TYPE_MAINS,
+       .properties = axp8x3_ac_power_properties,
+       .num_properties = ARRAY_SIZE(axp8x3_ac_power_properties),
+       .property_is_writeable = axp20x_ac_power_prop_writeable,
+       .get_property = axp20x_ac_power_get_property,
+       .set_property = axp20x_ac_power_set_property,
+};
+
 struct axp_data {
        const struct power_supply_desc  *power_desc;
        bool                            acin_adc;
@@ -154,6 +337,11 @@ static const struct axp_data axp22x_data = {
        .acin_adc = false,
 };
 
+static const struct axp_data axp8x3_data = {
+       .power_desc = &axp8x3_ac_power_desc,
+       .acin_adc = false,
+};
+
 static int axp20x_ac_power_probe(struct platform_device *pdev)
 {
        struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
@@ -234,6 +422,12 @@ static const struct of_device_id axp20x_ac_power_match[] = 
{
        }, {
                .compatible = "x-powers,axp221-ac-power-supply",
                .data = &axp22x_data,
+       }, {
+               .compatible = "x-powers,axp803-ac-power-supply",
+               .data = &axp8x3_data,
+       }, {
+               .compatible = "x-powers,axp813-ac-power-supply",
+               .data = &axp8x3_data,
        }, { /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, axp20x_ac_power_match);
diff --git a/drivers/power/supply/axp20x_battery.c 
b/drivers/power/supply/axp20x_battery.c
index e84b6e4da14a..932027f4a993 100644
--- a/drivers/power/supply/axp20x_battery.c
+++ b/drivers/power/supply/axp20x_battery.c
@@ -537,6 +537,9 @@ static const struct of_device_id axp20x_battery_ps_id[] = {
        }, {
                .compatible = "x-powers,axp221-battery-power-supply",
                .data = (void *)&axp221_data,
+       }, {
+               .compatible = "x-powers,axp803-battery-power-supply",
+               .data = (void *)&axp813_data,
        }, {
                .compatible = "x-powers,axp813-battery-power-supply",
                .data = (void *)&axp813_data,
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index 517e60eecbcb..23d58e243d01 100644
--- a/include/linux/mfd/axp20x.h
+++ b/include/linux/mfd/axp20x.h
@@ -266,6 +266,7 @@ enum axp20x_variants {
 #define AXP288_RT_BATT_V_H             0xa0
 #define AXP288_RT_BATT_V_L             0xa1
 
+#define AXP803_ACIN_PATH_CTRL          0x3a
 #define AXP813_ADC_RATE                        0x85
 
 /* Fuel Gauge */
-- 
2.17.1

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