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SubjectRe: [PATCH v11 4/4] power: supply: bq25150 introduce the bq25150
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On 5/28/20 10:05 AM, Ricardo Rivera-Matos wrote:
> +static int bq2515x_set_precharge_current(struct bq2515x_device *bq2515x,
> + int val)
> +{
> + int ret;
> + unsigned int pchrgctrl;
> + unsigned int icharge_range;
> + unsigned int precharge_reg_code;
> + u16 precharge_multiplier = BQ2515X_ICHG_RNG_1B0_UA;
> + u16 precharge_max_ua = BQ2515X_PRECHRG_ICHRG_RNGE_1875_UA;


Why u16? looks like it gets promoted everywhere it's used anyway.


> +
> + ret = regmap_read(bq2515x->regmap, BQ2515X_PCHRGCTRL, &pchrgctrl);
> + if (ret)
> + return ret;
> +
> + icharge_range = pchrgctrl & BQ2515X_ICHARGE_RANGE;
> +
> + if (icharge_range) {
> + precharge_max_ua = BQ2515X_PRECHRG_ICHRG_RNGE_3750_UA;
> + precharge_multiplier = BQ2515X_ICHG_RNG_1B1_UA;

This is a little hard to read when we have a default value overwritten
in an if, it basically hides the else logic, suggest:


if (icharge_range) {
precharge_max_ua = BQ2515X_PRECHRG_ICHRG_RNGE_3750_UA;
precharge_multiplier = BQ2515X_ICHG_RNG_1B1_UA;
} else {
precharge_max_ua = BQ2515X_PRECHRG_ICHRG_RNGE_1875_UA;
precharge_multiplier = BQ2515X_ICHG_RNG_1B0_UA;
}


> + }
> + if (val > precharge_max_ua || val < BQ2515X_ICHG_MIN_UA)
> + return -EINVAL;
> +
> + precharge_reg_code = val / precharge_multiplier;
> +
> + ret = bq2515x_set_charge_disable(bq2515x, 1);
> + if (ret)
> + return ret;
> +
> + ret = regmap_update_bits(bq2515x->regmap, BQ2515X_PCHRGCTRL,
> + BQ2515X_PRECHARGE_MASK, precharge_reg_code);
> + if (ret)
> + return ret;
> +
> + return bq2515x_set_charge_disable(bq2515x, 0);
> +}

[snip]

> +
> +static int bq2515x_set_ilim_lvl(struct bq2515x_device *bq2515x, int val)
> +{
> + int i = 0;
> + unsigned int array_size = ARRAY_SIZE(bq2515x_ilim_lvl_values);
> +
> + if (val >= bq2515x_ilim_lvl_values[array_size - 1]) {


Isn't this check the same as is done in first iteration of the below loop?

Andrew


> + i = array_size - 1;
> + } else {
> + for (i = array_size - 1; i > 0; i--) {
> + if (val >= bq2515x_ilim_lvl_values[i])
> + break;
> + }
> + }
> + return regmap_write(bq2515x->regmap, BQ2515X_ILIMCTRL, i);
> +}
> +

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