Re: [PATCH 4/4] drm/panel: otm8009a: use new backlight api

2018-05-14 Thread Vincent ABRIOU 
Hi Philippe,

Reviewed-by: Vincent Abriou 

BR
Vincent

On 04/23/2018 04:10 PM, Philippe Cornu wrote:
> Use the new backlight api.
> 
> Signed-off-by: Philippe Cornu 
> ---
>   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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[PATCH 4/4] drm/panel: otm8009a: use new backlight api

2018-04-23 Thread Philippe Cornu 
Use the new backlight api.

Signed-off-by: Philippe Cornu 
---
 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;
 }
 
-- 
2.15.1

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