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| author | Mika Kahola <mika.kahola@intel.com> | 2016-09-09 14:10:54 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2016-09-15 14:50:33 +0300 |
| commit | 1a2724fa94b6308dee87f7851be7ec84a409a538 (patch) | |
| tree | 68f83c1eb6f4767fbef2805b3f68c395bfe5c6e7 /include/drm | |
| parent | 0e390a33a668f97ea3ffa7c6ceb4266e1b39450a (diff) | |
| download | linux-1a2724fa94b6308dee87f7851be7ec84a409a538.tar.gz linux-1a2724fa94b6308dee87f7851be7ec84a409a538.tar.bz2 linux-1a2724fa94b6308dee87f7851be7ec84a409a538.zip | |
drm/i915: Read DP branch device SW revision
SW revision is mandatory field for DisplayPort branch
devices. This is defined in DPCD register fields 0x50A
and 0x50B.
v2: move drm_dp_ds_revision structure to be part of
drm_dp_link structure (Daniel)
v3: remove dependency to drm_dp_helper but instead parse
DPCD and print SW revision info to dmesg (Ville)
v4: commit message fix (Jim Bride)
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Jim Bride <jim.bride@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1473419458-17080-9-git-send-email-mika.kahola@intel.com
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_dp_helper.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 19ac59984df0..215202fa5867 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -447,6 +447,7 @@ #define DP_BRANCH_OUI 0x500 #define DP_BRANCH_ID 0x503 #define DP_BRANCH_HW_REV 0x509 +#define DP_BRANCH_SW_REV 0x50A #define DP_SET_POWER 0x600 # define DP_SET_POWER_D0 0x1 |