Re: [PATCH v2 6/6] power: supply: add AC power supply driver for AXP813

[Quentin Schulz]

Hi Oskari,

On Sun, Oct 07, 2018 at 12:18:36AM +0300, Oskari Lemmela wrote:
> AXP813 and AXP803 PMICs can control input current and
> minimum voltage.
> 
> Both of these values are configurable.
> 
> Signed-off-by: Oskari Lemmela <osk...@lemmela.net>
> ---
>  drivers/power/supply/axp20x_ac_power.c | 92 ++++++++++++++++++++++++++
>  1 file changed, 92 insertions(+)
> 
> diff --git a/drivers/power/supply/axp20x_ac_power.c 
> b/drivers/power/supply/axp20x_ac_power.c
> index 0771f951b11f..92a92354f6f0 100644
> --- a/drivers/power/supply/axp20x_ac_power.c
> +++ b/drivers/power/supply/axp20x_ac_power.c
> @@ -27,6 +27,16 @@
>  #define AXP20X_PWR_STATUS_ACIN_PRESENT       BIT(7)
>  #define AXP20X_PWR_STATUS_ACIN_AVAIL BIT(6)
>  
> +#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)    \
> +     (((((x) & AXP813_VHOLD_MASK) >> 3) + 40) * 100000)
> +
> +#define AXP813_CURR_LIMIT_MASK               GENMASK(2, 0)
> +#define AXP813_CURR_LIMIT_UA_TO_BIT(x)       (((x) / 500000) - 3)
> +#define AXP813_CURR_LIMIT_REG_TO_UA(x)       \
> +     ((((x) & AXP813_CURR_LIMIT_MASK) + 3) * 500000)
> +
>  #define DRVNAME "axp20x-ac-power-supply"
>  
>  struct axp20x_ac_power {
> @@ -102,6 +112,55 @@ static int axp20x_ac_power_get_property(struct 
> power_supply *psy,
>  
>               return 0;
>  
> +     case POWER_SUPPLY_PROP_VOLTAGE_MIN:
> +             ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, &reg);
> +             if (ret)
> +                     return ret;
> +
> +             val->intval = AXP813_VHOLD_REG_TO_UV(reg);
> +
> +             return 0;
> +
> +     case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
> +             ret = regmap_read(power->regmap, AXP813_ACIN_PATH_CTRL, &reg);
> +             if (ret)
> +                     return ret;
> +
> +             val->intval = AXP813_CURR_LIMIT_REG_TO_UA(reg);
> +
> +             return 0;
> +
> +     default:
> +             return -EINVAL;
> +     }
> +
> +     return -EINVAL;
> +}
> +
> +static int axp20x_ac_power_set_property(struct power_supply *psy,
> +                                     enum power_supply_property psp,
> +                                     const union power_supply_propval *val)
> +{

Argh, missed this one in the first version. Since you're introducing it
with the AXP813 and it isn't used with the AXP20X, I'd name it
axp813_ac_power_set_property. I'll let Maxime or Chen-Yu confirm though.

With the modification in the header from the previous patch in this
patch,

Reviewed-by: Quentin Schulz <quentin.sch...@bootlin.com>

Thanks!
Quentin

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