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drm: extract drm_dp_max_lane_count helper

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Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter
2012-10-22 22:56:43 +02:00
parent 3b5c662e8f
commit 397fe15715
3 changed files with 10 additions and 21 deletions
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7
include/drm/drm_dp_helper.h
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@@ -346,4 +346,11 @@ drm_dp_max_link_rate(u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]);
}
static inline u8
drm_dp_max_lane_count(u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
}
#endif /* _DRM_DP_HELPER_H_ */