Hi Philippe,

Reviewed-by: Vincent Abriou <vincent.abr...@st.com>

BR
Vincent

On 04/23/2018 04:10 PM, Philippe Cornu wrote:
> Use the new backlight api.
> 
> Signed-off-by: Philippe Cornu <philippe.co...@st.com>
> ---
>   drivers/gpu/drm/panel/panel-orisetech-otm8009a.c | 26 
> ++++++++----------------
>   1 file changed, 9 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c 
> b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
> index 4c638b7b9943..c2a71bd17e08 100644
> --- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
> +++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
> @@ -260,11 +260,7 @@ static int otm8009a_disable(struct drm_panel *panel)
>       if (!ctx->enabled)
>               return 0; /* This is not an issue so we return 0 here */
>   
> -     /* Power off the backlight. Note: end-user still controls brightness */
> -     ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
> -     ret = backlight_update_status(ctx->bl_dev);
> -     if (ret)
> -             return ret;
> +     backlight_disable(ctx->bl_dev);
>   
>       ret = mipi_dsi_dcs_set_display_off(dsi);
>       if (ret)
> @@ -338,12 +334,7 @@ static int otm8009a_enable(struct drm_panel *panel)
>       if (ctx->enabled)
>               return 0;
>   
> -     /*
> -      * Power on the backlight. Note: end-user still controls brightness
> -      * Note: ctx->prepared must be true before updating the backlight.
> -      */
> -     ctx->bl_dev->props.power = FB_BLANK_UNBLANK;
> -     backlight_update_status(ctx->bl_dev);
> +     backlight_enable(ctx->bl_dev);
>   
>       ctx->enabled = true;
>   
> @@ -459,11 +450,14 @@ static int otm8009a_probe(struct mipi_dsi_device *dsi)
>       ctx->panel.dev = dev;
>       ctx->panel.funcs = &otm8009a_drm_funcs;
>   
> -     ctx->bl_dev = backlight_device_register(dev_name(dev), dev, ctx,
> -                                             &otm8009a_backlight_ops, NULL);
> +     ctx->bl_dev = devm_backlight_device_register(dev, dev_name(dev),
> +                                                  dsi->host->dev, ctx,
> +                                                  &otm8009a_backlight_ops,
> +                                                  NULL);
>       if (IS_ERR(ctx->bl_dev)) {
> -             dev_err(dev, "failed to register backlight device\n");
> -             return PTR_ERR(ctx->bl_dev);
> +             ret = PTR_ERR(ctx->bl_dev);
> +             dev_err(dev, "failed to register backlight %d\n", ret);
> +             return ret;
>       }
>   
>       ctx->bl_dev->props.max_brightness = OTM8009A_BACKLIGHT_MAX;
> @@ -491,8 +485,6 @@ static int otm8009a_remove(struct mipi_dsi_device *dsi)
>       mipi_dsi_detach(dsi);
>       drm_panel_remove(&ctx->panel);
>   
> -     backlight_device_unregister(ctx->bl_dev);
> -
>       return 0;
>   }
>   
> 
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