As per request from DP phy compliance test few special
test pattern need to set by source. Added function
to set pattern in DP_COMP_CTL register. It will be
called along with other test parameters like vswing,
pre-emphasis programming in atomic_commit_tail path.
Signed-off-by: Animesh Manna <animesh.ma...@intel.com>
---
drivers/gpu/drm/i915/display/intel_dp.c | 55 +++++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
b/drivers/gpu/drm/i915/display/intel_dp.c
index cbefda9b6204..7c3f65e5d88b 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5005,6 +5005,61 @@ static u8 intel_dp_prepare_phytest(struct intel_dp
*intel_dp)
return DP_TEST_ACK;
}
+static inline void intel_dp_phy_pattern_update(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *dev_priv =
+ to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_dp_phy_test_params *data =
+ &intel_dp->compliance.test_data.phytest;
+ u32 temp;
+
+ switch (data->phy_pattern) {
+ case DP_PHY_TEST_PATTERN_NONE:
+ DRM_DEBUG_KMS("Disable Phy Test Pattern\n");
+ I915_WRITE(DDI_DP_COMP_CTL(intel_dig_port->base.port), 0x0);
+ break;
+ case DP_PHY_TEST_PATTERN_D10_2:
+ DRM_DEBUG_KMS("Set D10.2 Phy Test Pattern\n");
+ I915_WRITE(DDI_DP_COMP_CTL(intel_dig_port->base.port),
+ DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_D10_2);
+ break;
+ case DP_PHY_TEST_PATTERN_ERROR_COUNT:
+ DRM_DEBUG_KMS("Set Error Count Phy Test Pattern\n");
+ I915_WRITE(DDI_DP_COMP_CTL(intel_dig_port->base.port),
+ DDI_DP_COMP_CTL_ENABLE |
+ DDI_DP_COMP_CTL_SCRAMBLED_0);
+ break;
+ case DP_PHY_TEST_PATTERN_PRBS7:
+ DRM_DEBUG_KMS("Set PRBS7 Phy Test Pattern\n");
+ I915_WRITE(DDI_DP_COMP_CTL(intel_dig_port->base.port),
+ DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_PRBS7);
+ break;
+ case DP_PHY_TEST_PATTERN_80BIT_CUSTOM:
+ DRM_DEBUG_KMS("Set 80Bit Custom Phy Test Pattern\n");
+ temp = ((data->custom80[0] << 24) | (data->custom80[1] << 16) |
+ (data->custom80[2] << 8) | (data->custom80[3]));
+ I915_WRITE(DDI_DP_COMP_PAT(intel_dig_port->base.port, 0), temp);
+ temp = ((data->custom80[4] << 24) | (data->custom80[5] << 16) |
+ (data->custom80[6] << 8) | (data->custom80[7]));
+ I915_WRITE(DDI_DP_COMP_PAT(intel_dig_port->base.port, 1), temp);
+ temp = ((data->custom80[8] << 8) | data->custom80[9]);
+ I915_WRITE(DDI_DP_COMP_PAT(intel_dig_port->base.port, 2), temp);
+ I915_WRITE(DDI_DP_COMP_CTL(intel_dig_port->base.port),
+ DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_CUSTOM80);
+ break;
+ case DP_PHY_TEST_PATTERN_CP2520:
+ DRM_DEBUG_KMS("Set HBR2 compliance Phy Test Pattern\n");
+ temp = ((data->hbr2_reset[1] << 8) | data->hbr2_reset[0]);
+ I915_WRITE(DDI_DP_COMP_CTL(intel_dig_port->base.port),
+ DDI_DP_COMP_CTL_ENABLE | DDI_DP_COMP_CTL_HBR2 |
+ temp);
+ break;
+ default:
+ WARN(1, "Invalid Phy Test PAttern\n");
+ }
+}
+
static u8 intel_dp_autotest_phy_pattern(struct intel_dp *intel_dp)
{
u8 test_result = DP_TEST_NAK;
--
2.24.0
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