From 22dae8a0cc531e75a969b2ab983774c95f6a448e Mon Sep 17 00:00:00 2001
From: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Date: Tue, 30 Oct 2018 01:45:02 -0700
Subject: drm/i915/icl: Implement Display WA_1405510057
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Git-commit: 22dae8a0cc531e75a969b2ab983774c95f6a448e
Patch-mainline: v5.0-rc1
References: fate#326289
Display WA_1405510057 asks to not enable YUV 420 HDMI
10bpc when horizontal blank size mod 8 reminder is 2.
V2: Rebase(r-b: Anusha)
V3: crtc_state->s/ycbcr420/output_format/
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181030084504.21537-2-radhakrishna.sripada@intel.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/intel_hdmi.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index d3e653640ce7..654a49bbc6b2 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1594,6 +1594,8 @@ static bool hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state,
struct drm_atomic_state *state = crtc_state->base.state;
struct drm_connector_state *connector_state;
struct drm_connector *connector;
+ const struct drm_display_mode *adjusted_mode =
+ &crtc_state->base.adjusted_mode;
int i;
if (HAS_GMCH_DISPLAY(dev_priv))
@@ -1642,7 +1644,14 @@ static bool hdmi_deep_color_possible(const struct intel_crtc_state *crtc_state,
/* Display WA #1139: glk */
if (bpc == 12 && IS_GLK_REVID(dev_priv, 0, GLK_REVID_A1) &&
- crtc_state->base.adjusted_mode.htotal > 5460)
+ adjusted_mode->htotal > 5460)
+ return false;
+
+ /* Display Wa_1405510057:icl */
+ if (crtc_state->ycbcr420 &&
+ bpc == 10 && IS_ICELAKE(dev_priv) &&
+ (adjusted_mode->crtc_hblank_end -
+ adjusted_mode->crtc_hblank_start) % 8 == 2)
return false;
return true;
--
2.20.1