[Intel-gfx] [PATCH] drm/dp: DPCD register defines for link status within ESI field

[Jani Nikula]

On Wed, 13 Sep 2017, Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com> wrote:
> Link status is available in the ESI field on devices with DPCD r1.2 or
> higher. DP spec also says "An MST upstream device shall use this field
> instead of the Link/Sink Device Status field registers, starting from DPCD
> Address 00200h."
>
> Cc: Jani Nikula <jani.nikula at intel.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> ---
>  include/drm/drm_dp_helper.h | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> index 2c412a15cfa1..0bf15525cdd0 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -738,6 +738,11 @@
>  #define DP_RECEIVER_ALPM_STATUS		    0x200b  /* eDP 1.4 */
>  # define DP_ALPM_LOCK_TIMEOUT_ERROR	    (1 << 0)
>  
> +#define LANE0_1_STATUS_ESI                  0x200c /* Same as status in 0x202 */
> +#define LANE2_3_STATUS_ESI                  0x200d /* Same as status in 0x203 */
> +#define LANE_ALIGN_STATUS_UPDATED_ESI       0x200e /* Same as status in 0x204 */
> +#define SINK_STATUS_ESI                     0x200f /* Same as status in 0x205 */

With the macro names prefixed with DP_,

Reviewed-by: Jani Nikula <jani.nikula at intel.com>


> +
>  #define DP_DPRX_FEATURE_ENUMERATION_LIST    0x2210  /* DP 1.3 */
>  # define DP_GTC_CAP					(1 << 0)  /* DP 1.3 */
>  # define DP_SST_SPLIT_SDP_CAP				(1 << 1)  /* DP 1.4 */

-- 
Jani Nikula, Intel Open Source Technology Center