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| author |   Thierry Reding <treding@nvidia.com> | 2013-11-22 16:37:57 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-02-26 17:21:33 +0100 |
| commit | 8d4adc6a5807ca51999421b4d6d4f193c95775ba (patch) | |
| tree | ca44fc42336d1a5d786f89fada9f9a9cb6d25a2e /include/drm | |
| parent | drm/dp: Add AUX channel infrastructure (diff) | |
| download | linux-dev-8d4adc6a5807ca51999421b4d6d4f193c95775ba.tar.xz linux-dev-8d4adc6a5807ca51999421b4d6d4f193c95775ba.zip | |
drm/dp: Add drm_dp_dpcd_read_link_status()
The function reads the link status (6 bytes starting at offset 0x202)
from the DPCD so that it can be conveniently passed to other DPCD
helpers.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 70f18eb3ca1a..a78711feb0d1 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -477,4 +477,7 @@ static inline ssize_t drm_dp_dpcd_writeb(struct drm_dp_aux *aux, return drm_dp_dpcd_write(aux, offset, &value, 1); } +int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux, + u8 status[DP_LINK_STATUS_SIZE]); + #endif /* _DRM_DP_HELPER_H_ */ |