Re: [PATCH 05/15] drm/dp: Add drm_dp_alternate_scrambler_reset_cap() helper

Reviewed-by: Lyude Paul lyude@redhat.com

On Tue, 2019-10-15 at 16:34 +0200, Thierry Reding wrote:

From: Thierry Reding treding@nvidia.com

Add a helper to check if the sink supports the eDP alternate scrambler reset value of 0xfffe.

Signed-off-by: Thierry Reding treding@nvidia.com

include/drm/drm_dp_helper.h | 7 +++++++ 1 file changed, 7 insertions(+)

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 7ff7bf0e742d..7a537ffc2fb1 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1290,6 +1290,13 @@ drm_dp_channel_coding_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) return dpcd[DP_MAIN_LINK_CHANNEL_CODING] & DP_CAP_ANSI_8B10B; }

+static inline bool +drm_dp_alternate_scrambler_reset_cap(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{

• return dpcd[DP_EDP_CONFIGURATION_CAP] &

• 	DP_ALTERNATE_SCRAMBLER_RESET_CAP;
  

+}

/*

• DisplayPort AUX channel

*/