Hi Daniel,
any comments for the patch below ?
regards,
Sivakumar
On Friday 07 August 2015 03:14 PM, Sivakumar Thulasimani wrote:
From: "Thulasimani,Sivakumar" <[email protected]>
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 <[email protected]>
---
drivers/gpu/drm/i915/intel_dp.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index f1b9f93..fa6e202 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -4090,9 +4090,16 @@ 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");
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