From: Samuel Holland samuel@sholland.org
commit 1c51aad8475d670ad58ae60adc9d32342381df8d upstream.
AXP803/AXP813 have a flag that enables/disables the AC power supply input. This flag does not affect the status bits in PWR_INPUT_STATUS. Its effect can be verified by checking the battery charge/discharge state (bit 2 of PWR_INPUT_STATUS), or by examining the current draw on the AC input.
Take this flag into account when getting the ONLINE property of the AC input, on PMICs where this flag is present.
Fixes: 7693b5643fd2 ("power: supply: add AC power supply driver for AXP813") Cc: stable@vger.kernel.org Signed-off-by: Samuel Holland samuel@sholland.org Reviewed-by: Chen-Yu Tsai wens@csie.org Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/power/supply/axp20x_ac_power.c | 31 +++++++++++++++++++++++++------ 1 file changed, 25 insertions(+), 6 deletions(-)
--- a/drivers/power/supply/axp20x_ac_power.c +++ b/drivers/power/supply/axp20x_ac_power.c @@ -23,6 +23,8 @@ #define AXP20X_PWR_STATUS_ACIN_PRESENT BIT(7) #define AXP20X_PWR_STATUS_ACIN_AVAIL BIT(6)
+#define AXP813_ACIN_PATH_SEL BIT(7) + #define AXP813_VHOLD_MASK GENMASK(5, 3) #define AXP813_VHOLD_UV_TO_BIT(x) ((((x) / 100000) - 40) << 3) #define AXP813_VHOLD_REG_TO_UV(x) \ @@ -40,6 +42,7 @@ struct axp20x_ac_power { struct power_supply *supply; struct iio_channel *acin_v; struct iio_channel *acin_i; + bool has_acin_path_sel; };
static irqreturn_t axp20x_ac_power_irq(int irq, void *devid) @@ -86,6 +89,17 @@ static int axp20x_ac_power_get_property( return ret;
val->intval = !!(reg & AXP20X_PWR_STATUS_ACIN_AVAIL); + + /* ACIN_PATH_SEL disables ACIN even if ACIN_AVAIL is set. */ + if (val->intval && power->has_acin_path_sel) { + ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, + ®); + if (ret) + return ret; + + val->intval = !!(reg & AXP813_ACIN_PATH_SEL); + } + return 0;
case POWER_SUPPLY_PROP_VOLTAGE_NOW: @@ -224,21 +238,25 @@ static const struct power_supply_desc ax struct axp_data { const struct power_supply_desc *power_desc; bool acin_adc; + bool acin_path_sel; };
static const struct axp_data axp20x_data = { - .power_desc = &axp20x_ac_power_desc, - .acin_adc = true, + .power_desc = &axp20x_ac_power_desc, + .acin_adc = true, + .acin_path_sel = false, };
static const struct axp_data axp22x_data = { - .power_desc = &axp22x_ac_power_desc, - .acin_adc = false, + .power_desc = &axp22x_ac_power_desc, + .acin_adc = false, + .acin_path_sel = false, };
static const struct axp_data axp813_data = { - .power_desc = &axp813_ac_power_desc, - .acin_adc = false, + .power_desc = &axp813_ac_power_desc, + .acin_adc = false, + .acin_path_sel = true, };
static int axp20x_ac_power_probe(struct platform_device *pdev) @@ -282,6 +300,7 @@ static int axp20x_ac_power_probe(struct }
power->regmap = dev_get_regmap(pdev->dev.parent, NULL); + power->has_acin_path_sel = axp_data->acin_path_sel;
platform_set_drvdata(pdev, power);