Hi Nia,
On Fri, Oct 7, 2022 at 8:16 AM Nia Espera <a5b6@xxxxxxxxxx> wrote:
> +static int samsung_s6e3fc2x01_prepare(struct drm_panel *panel)
> +{
> + struct samsung_s6e3fc2x01 *ctx = to_samsung_s6e3fc2x01(panel);
> + struct device *dev = &ctx->dsi->dev;
> + int ret;
> +
> + if (ctx->prepared)
> + return 0;
> +
> + ret = regulator_enable(ctx->supply);
> + if (ret < 0) {
> + dev_err(dev, "Failed to enable regulator: %d\n", ret);
> + return ret;
> + }
> +
> + samsung_s6e3fc2x01_reset(ctx);
> +
> + ret = samsung_s6e3fc2x01_on(ctx);
> + if (ret < 0) {
> + dev_err(dev, "Failed to initialize panel: %d\n", ret);
> + gpiod_set_value_cansleep(ctx->reset_gpio, 1);
You should also call regulator_disable() here in the case of failure.
> +static int samsung_s6e3fc2x01_unprepare(struct drm_panel *panel)
> +{
> + struct samsung_s6e3fc2x01 *ctx = to_samsung_s6e3fc2x01(panel);
> + struct device *dev = &ctx->dsi->dev;
> + int ret;
> +
> + if (!ctx->prepared)
> + return 0;
> +
> + ret = samsung_s6e3fc2x01_off(ctx);
> + if (ret < 0)
> + dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
> +
> + gpiod_set_value_cansleep(ctx->reset_gpio, 1);
regulator_disable() should be called here as well.
