[PATCH] drm/radeon: Hide cursor on CRTCs used by fbdev

[Daniel Vetter]

On Fri, Nov 28, 2014 at 11:48:48AM +0900, Michel Dänzer wrote:
> From: Michel Dänzer <michel.daenzer at amd.com>
> 
> Since we are now preserving the cursor across modesets, the cursor could
> be left over in console if e.g. X crashed.

I'd add a fixme for this since if you implement universal plane support
fbdev will automatically disable all non-primary planes (and so the
cursor).

Cheers, Daniel

> 
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
> ---
>  drivers/gpu/drm/radeon/radeon_fb.c | 29 ++++++++++++++++++++++++++++-
>  1 file changed, 28 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
> index 0ea1db8..311886b 100644
> --- a/drivers/gpu/drm/radeon/radeon_fb.c
> +++ b/drivers/gpu/drm/radeon/radeon_fb.c
> @@ -48,10 +48,37 @@ struct radeon_fbdev {
>  	struct radeon_device *rdev;
>  };
>  
> +/**
> + * radeon_fb_helper_set_par - Hide cursor on CRTCs used by fbdev.
> + *
> + * @info: fbdev info
> + *
> + * This function hides the cursor on all CRTCs used by fbdev.
> + */
> +static int radeon_fb_helper_set_par(struct fb_info *info)
> +{
> +	int ret;
> +
> +	ret = drm_fb_helper_set_par(info);
> +
> +	if (ret == 0) {
> +		struct drm_fb_helper *fb_helper = info->par;
> +		int i;
> +
> +		for (i = 0; i < fb_helper->crtc_count; i++) {
> +			struct drm_crtc *crtc = fb_helper->crtc_info[i].mode_set.crtc;
> +
> +			radeon_crtc_cursor_set2(crtc, NULL, 0, 0, 0, 0, 0);
> +		}
> +	}
> +
> +	return ret;
> +}
> +
>  static struct fb_ops radeonfb_ops = {
>  	.owner = THIS_MODULE,
>  	.fb_check_var = drm_fb_helper_check_var,
> -	.fb_set_par = drm_fb_helper_set_par,
> +	.fb_set_par = radeon_fb_helper_set_par,
>  	.fb_fillrect = cfb_fillrect,
>  	.fb_copyarea = cfb_copyarea,
>  	.fb_imageblit = cfb_imageblit,
> -- 
> 2.1.3
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch