Messages in this thread Patch in this message | | | From | Sankeerth Billakanti <> | Subject | [PATCH v4 3/5] drm/dp: Add macro to check max_downspread capability | Date | Tue, 2 Nov 2021 13:18:43 +0530 |
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Add a macro to check for the max_downspread capability in drm_dp_helper.
Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
changes in v4: - Return 1 for DPCD version >= v1.1 (Stephen Boyd) --- 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 b52df4d..596635c 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1767,6 +1767,13 @@ drm_dp_tps3_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) } static inline bool +drm_dp_max_downspread(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{ + return dpcd[DP_DPCD_REV] >= 0x11 || + dpcd[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5; +} + +static inline bool drm_dp_tps4_supported(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) { return dpcd[DP_DPCD_REV] >= 0x14 && -- 2.7.4
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