[PATCH 3/3] drm/fb-helper: Disable cursors and planes when restoring fbdev mode

[Daniel Vetter]

On Mon, Jun 03, 2013 at 04:10:42PM +0300, ville.syrjala at linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Cursors and plane can obscure whatever fbdev wants to show the user.
> Disable them all in drm_fb_helper_restore_fbdev_mode.
> 
> After the cursors and planes have been disabled, user space needs to
> explicitly re-enable them to make them visible again.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Yeah, I like that color ;-) For the series:

Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
>  drivers/gpu/drm/drm_fb_helper.c | 18 ++++++++++++++++--
>  1 file changed, 16 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
> index 0df0ebb..3d13ca6e2 100644
> --- a/drivers/gpu/drm/drm_fb_helper.c
> +++ b/drivers/gpu/drm/drm_fb_helper.c
> @@ -287,13 +287,27 @@ EXPORT_SYMBOL(drm_fb_helper_debug_leave);
>   */
>  bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
>  {
> +	struct drm_device *dev = fb_helper->dev;
> +	struct drm_plane *plane;
>  	bool error = false;
> -	int i, ret;
> +	int i;
> +
> +	drm_warn_on_modeset_not_all_locked(dev);
>  
> -	drm_warn_on_modeset_not_all_locked(fb_helper->dev);
> +	list_for_each_entry(plane, &dev->mode_config.plane_list, head)
> +		drm_plane_force_disable(plane);
>  
>  	for (i = 0; i < fb_helper->crtc_count; i++) {
>  		struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set;
> +		struct drm_crtc *crtc = mode_set->crtc;
> +		int ret;
> +
> +		if (crtc->funcs->cursor_set) {
> +			ret = crtc->funcs->cursor_set(crtc, NULL, 0, 0, 0);
> +			if (ret)
> +				error = true;
> +		}
> +
>  		ret = drm_mode_set_config_internal(mode_set);
>  		if (ret)
>  			error = true;
> -- 
> 1.8.1.5
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch