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| author | Thulasimani,Sivakumar | 2015-08-07 11:44:30 +0200 |
|---|---|---|
| committer | Daniel Vetter | 2015-08-14 17:50:42 +0200 |
| commit | f79b468eca20dae31b6fcaaa738a7f99b764837d (patch) | |
| tree | e76615d1ab0df897aa56230ca72d0ed3435c2e1c /drivers/gpu/drm/i915/intel_dp.c | |
| parent | drm/i915: Contain the WA_REG macro (diff) | |
| download | kernel-qcow2-linux-f79b468eca20dae31b6fcaaa738a7f99b764837d.tar.gz kernel-qcow2-linux-f79b468eca20dae31b6fcaaa738a7f99b764837d.tar.xz kernel-qcow2-linux-f79b468eca20dae31b6fcaaa738a7f99b764837d.zip | |
drm/i915: fix checksum write for automated test reply
DP spec requires the checksum of the last block read to be written
when replying to TEST_EDID_READ. This patch fixes the current code
to do the same.
v2: removed loop for jumping blocks and performed direct addition
as recommended by Daniel
Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Reviewed-by: Sonika Jindal <sonika.jindal@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index f3133d81fb9d..016e7bc6af0a 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -4139,9 +4139,16 @@ static uint8_t intel_dp_autotest_edid(struct intel_dp *intel_dp) intel_dp->aux.i2c_defer_count); intel_dp->compliance_test_data = INTEL_DP_RESOLUTION_FAILSAFE; } else { + struct edid *block = intel_connector->detect_edid; + + /* We have to write the checksum + * of the last block read + */ + block += intel_connector->detect_edid->extensions; + if (!drm_dp_dpcd_write(&intel_dp->aux, DP_TEST_EDID_CHECKSUM, - &intel_connector->detect_edid->checksum, + &block->checksum, 1)) DRM_DEBUG_KMS("Failed to write EDID checksum\n"); |