On Fri, Aug 5, 2022 at 9:07 AM ChiaEn Wu <peterwu.pub@xxxxxxxxx> wrote:
>
> From: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
>
> The MediaTek MT6370 is a highly-integrated smart power management IC,
> which includes a single cell Li-Ion/Li-Polymer switching battery
> charger, a USB Type-C & Power Delivery (PD) controller, dual
> Flash LED current sources, a RGB LED driver, a backlight WLED driver,
> a display bias driver and a general LDO for portable devices.
>
> Add a support for the MediaTek MT6370 Current Sink Type LED Indicator
Add support
(This is also for all other commit messages)
> driver. It can control four channels current-sink RGB LEDs with 3 modes,
3 modes:
> constant current, PWM, and breath mode.
...
> +static int mt6370_gen_breath_pattern(struct mt6370_priv *priv,
> + struct led_pattern *pattern, u32 len,
> + u8 *pattern_val, u32 val_len)
> +{
> + enum mt6370_led_ranges sel_range;
> + struct led_pattern *curr;
> + unsigned int sel;
> + u32 val = 0;
> + int i;
> +
> + if (len < P_MAX_PATTERNS && val_len < P_MAX_PATTERNS / 2)
> + return -EINVAL;
> +
> + /*
> + * Pattern list
> + * tr1: byte 0, b'[7: 4]
> + * tr2: byte 0, b'[3: 0]
> + * tf1: byte 1, b'[7: 4]
> + * tf2: byte 1, b'[3: 0]
> + * ton: byte 2, b'[7: 4]
> + * toff: byte 2, b'[3: 0]
> + */
> + for (i = 0; i < P_MAX_PATTERNS; i++) {
> + curr = pattern + i;
> +
> + sel_range = i == P_LED_TOFF ? R_LED_TOFF : R_LED_TRFON;
> +
> + linear_range_get_selector_within(priv->ranges + sel_range,
> + curr->delta_t, &sel);
> +
> + val <<= i % 2 == 0 ? 8 : 0;
> + val |= sel << (i % 2 == 0 ? 4 : 0);
It's too cryptic, why not simply:
if (i % 2) {
val |= sel;
} else {
val <<= 8;
val |= sel << 4;
}
?
> + }
> +
> + put_unaligned_be24(val, pattern_val);
> +
> + return 0;
> +}
...
> + const char * const states[] = { "off", "keep", "on" };
> + ret = fwnode_property_read_string(init_data->fwnode, "default-state",
> + &stat_str);
> + if (!ret) {
> + ret = match_string(states, ARRAY_SIZE(states), stat_str);
> + if (ret < 0)
> + ret = STATE_OFF;
> +
> + led->default_state = ret;
> + }
Replace this by using led_init_default_state_get().
--
With Best Regards,
Andy Shevchenko
