Re: [PATCH v2 2/7] drm: Turn DRM_MODE_SUBCONNECTOR_xx definitions into an enum

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On Thu, Dec 01, 2016 at 09:09:25PM +0100, Boris Brezillon wrote:
> List of values like the DRM_MODE_SUBCONNECTOR_xx ones are better
> represented with enums.
> 
> Turn the DRM_MODE_SUBCONNECTOR_xx macros into an enum.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
> Suggested-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

Yeah, this is new and maybe we'll regret it, but I think it's worth a
shot. And would make kernel internal code look prettier. If it works out
we can roll it out as a new best practice everywhere.

Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>

> ---
>  include/uapi/drm/drm_mode.h | 18 ++++++++++--------
>  1 file changed, 10 insertions(+), 8 deletions(-)
> 
> diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
> index df0e3504c349..970bfc0d7107 100644
> --- a/include/uapi/drm/drm_mode.h
> +++ b/include/uapi/drm/drm_mode.h
> @@ -220,14 +220,16 @@ struct drm_mode_get_encoder {
>  
>  /* This is for connectors with multiple signal types. */
>  /* Try to match DRM_MODE_CONNECTOR_X as closely as possible. */
> -#define DRM_MODE_SUBCONNECTOR_Automatic	0
> -#define DRM_MODE_SUBCONNECTOR_Unknown	0
> -#define DRM_MODE_SUBCONNECTOR_DVID	3
> -#define DRM_MODE_SUBCONNECTOR_DVIA	4
> -#define DRM_MODE_SUBCONNECTOR_Composite	5
> -#define DRM_MODE_SUBCONNECTOR_SVIDEO	6
> -#define DRM_MODE_SUBCONNECTOR_Component	8
> -#define DRM_MODE_SUBCONNECTOR_SCART	9
> +enum drm_mode_subconnector {
> +	DRM_MODE_SUBCONNECTOR_Automatic = 0,
> +	DRM_MODE_SUBCONNECTOR_Unknown = 0,
> +	DRM_MODE_SUBCONNECTOR_DVID = 3,
> +	DRM_MODE_SUBCONNECTOR_DVIA = 4,
> +	DRM_MODE_SUBCONNECTOR_Composite = 5,
> +	DRM_MODE_SUBCONNECTOR_SVIDEO = 6,
> +	DRM_MODE_SUBCONNECTOR_Component = 8,
> +	DRM_MODE_SUBCONNECTOR_SCART = 9,
> +};
>  
>  #define DRM_MODE_CONNECTOR_Unknown	0
>  #define DRM_MODE_CONNECTOR_VGA		1
> -- 
> 2.7.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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