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drm/i915/dp: Preparation for DP phy compliance auto test

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During DP phy compliance auto test mode, sink will request
combination of different test pattern with differnt level of
vswing, pre-emphasis. Function added to prepare for it.

Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200316103759.12867-5-animesh.manna@intel.com
This commit is contained in:
Animesh Manna 2020-03-16 16:07:56 +05:30 committed by Maarten Lankhorst
parent 5d1453d529
commit 88afbfdbfd
2 changed files with 25 additions and 0 deletions
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1
drivers/gpu/drm/i915/display/intel_display_types.h
View File

@ -1238,6 +1238,7 @@ struct intel_dp_compliance_data {
u8 video_pattern;
u16 hdisplay, vdisplay;
u8 bpc;
struct drm_dp_phy_test_params phytest;
};
struct intel_dp_compliance {

24
drivers/gpu/drm/i915/display/intel_dp.c
View File

@ -5001,9 +5001,33 @@ static u8 intel_dp_autotest_edid(struct intel_dp *intel_dp)
return test_result;
}
static u8 intel_dp_prepare_phytest(struct intel_dp *intel_dp)
{
struct drm_dp_phy_test_params *data =
&intel_dp->compliance.test_data.phytest;
if (drm_dp_get_phy_test_pattern(&intel_dp->aux, data)) {
DRM_DEBUG_KMS("DP Phy Test pattern AUX read failure\n");
return DP_TEST_NAK;
}
/*
* link_mst is set to false to avoid executing mst related code
* during compliance testing.
*/
intel_dp->link_mst = false;
return DP_TEST_ACK;
}
static u8 intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
{
u8 test_result = DP_TEST_NAK;
test_result = intel_dp_prepare_phytest(intel_dp);
if (test_result != DP_TEST_ACK)
DRM_ERROR("Phy test preparation failed\n");
return test_result;
}