[PATCH 17/22] power: supply: add battery driver for AXP20X and AXP22X PMICs

Maxime Ripard
2017-01-05T17:02:24Z

On Mon, Jan 02, 2017 at 05:37:17PM +0100, Quentin Schulz wrote:
> + /*
> + * IIO framework gives mV but Power Supply framework gives ?V.
> + */
> + val->intval *= 1000;

s/gives/wants/ ?

> +static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
> + int val)
> +{
> + switch (val) {
> + case 4100000:
> + return regmap_update_bits(axp20x_batt->regmap,
> + AXP20X_CHRG_CTRL1,
> + AXP20X_CHRG_CTRL1_TGT_VOLT,
> + AXP20X_CHRG_CTRL1_TGT_4_1V);
> + case 4150000:
> + if (axp20x_batt->axp_id == AXP221_ID)
> + return -EINVAL;
> +
> + return regmap_update_bits(axp20x_batt->regmap,
> + AXP20X_CHRG_CTRL1,
> + AXP20X_CHRG_CTRL1_TGT_VOLT,
> + AXP20X_CHRG_CTRL1_TGT_4_15V);
> + case 4200000:
> + return regmap_update_bits(axp20x_batt->regmap,
> + AXP20X_CHRG_CTRL1,
> + AXP20X_CHRG_CTRL1_TGT_VOLT,
> + AXP20X_CHRG_CTRL1_TGT_4_2V);
> + default:
> + /*
> + * AXP20x max voltage can be set to 4.36V and AXP22X max voltage
> + * can be set to 4.22V and 4.24V, but these voltages are too
> + * high for Lithium based batteries (AXP PMICs are supposed to
> + * be used with these kinds of battery).
> + */
> + return -EINVAL;
> + }

Since all your calls to regmap are the same, something like:

case 4100000:
val = AXP20X_CHRG_CTRL1_TGT_4_1V;
break;

case 4150000:
val = AXP20X_CHRG_CTRL1_TGT_4_15V;
break;

regmap_update_bits(axp20x_batt->regmap, AXP20X_CHRG_CTRL1,
AXP20X_CHRG_CTRL1_TGT_VOLT, val);

It would also get rid of your warnings in checkpatch.

Maxime

--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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