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| author | Sankeerth Billakanti <quic_sbillaka@quicinc.com> | 2021-11-02 13:18:43 +0530 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-11-28 09:32:03 -0800 |
| commit | 447a39f4e89d992f82f03521d46746f6a4348578 (patch) | |
| tree | 39d66f4bf35914a11dc3d9244753c1f1d415c869 /include/drm | |
| parent | ef7837ff091c8805cfa18d2ad06c2e5f4d820a7e (diff) | |
| download | linux-stable-447a39f4e89d992f82f03521d46746f6a4348578.tar.gz linux-stable-447a39f4e89d992f82f03521d46746f6a4348578.tar.bz2 linux-stable-447a39f4e89d992f82f03521d46746f6a4348578.zip | |
drm/dp: Add macro to check max_downspread capability
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)
Link: https://lore.kernel.org/r/1635839325-401-4-git-send-email-quic_sbillaka@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index b52df4db3e8f..596635ceb9b2 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 && |