Re: [PATCH 2/2] drm: Use C8 instead of RGB332 when determining the format from depth/bpp

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On Thu, Jan 31, 2013 at 07:43:38PM +0200, ville.syrjala@xxxxxxxxxxxxxxx wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> Support for real RGB332 is a rarity, most hardware only really support
> C8. So use C8 instead of RGB332 when determining the format based on
> depth/bpp.
> 
> This fixes 8bpp fbcon on i915, since i915 will only accept C8 and not
> RGB332.
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=59572
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Tested-by: mlsemon35@xxxxxxxxx

Dave, can you please consider including these two patches into -fixes? The
fix a black screen regression when users opt for 8bpp console ...
-Daniel

> ---
>  drivers/gpu/drm/drm_crtc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index ff7344c..826a5ca 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -2253,7 +2253,7 @@ uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
>  
>  	switch (bpp) {
>  	case 8:
> -		fmt = DRM_FORMAT_RGB332;
> +		fmt = DRM_FORMAT_C8;
>  		break;
>  	case 16:
>  		if (depth == 15)
> -- 
> 1.7.12.4
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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