From: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: airlied@linux.ie, uma.shankar@intel.com, dri-devel@lists.freedesktop.org
Subject: [PATCH v3 3/3] drm/i915/display: Configure HDMI2.1 Pcon for FRL only if Src-Ctl mode is available
Date: Tue, 9 Mar 2021 10:09:15 +0530 [thread overview]
Message-ID: <20210309043915.1921-4-ankit.k.nautiyal@intel.com> (raw)
In-Reply-To: <20210309043915.1921-1-ankit.k.nautiyal@intel.com>
Currently we see only the MAX FRL BW from PCON before going for FRL.
Also add the check if source control mode is supported by the
PCON, before starting configuring PCON for FRL training.
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
drivers/gpu/drm/i915/display/intel_dp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 2e90359ce21f..8e401d3fd29d 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2638,7 +2638,8 @@ void intel_dp_check_frl_training(struct intel_dp *intel_dp)
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
/* Always go for FRL training if supported */
- if (!intel_dp_is_hdmi_2_1_sink(intel_dp) ||
+ if (!(intel_dp->dpcd[2] & DP_PCON_SOURCE_CTL_MODE) ||
+ !intel_dp_is_hdmi_2_1_sink(intel_dp) ||
intel_dp->frl.is_trained)
return;
--
2.29.2
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next prev parent reply other threads:[~2021-03-09 4:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-09 4:39 [PATCH v3 0/3] HDMI2.1 PCON Misc Fixes Ankit Nautiyal
2021-03-09 4:39 ` [PATCH v3 1/3] drm/dp_helper: Define options for FRL training for HDMI2.1 PCON Ankit Nautiyal
2021-03-10 18:51 ` Ville Syrjälä
2021-03-09 4:39 ` [PATCH v3 2/3] drm/i915/display: Remove FRL related code from disable DP sequence for older platforms Ankit Nautiyal
2021-03-09 4:39 ` Ankit Nautiyal [this message]
2021-03-22 6:15 ` [PATCH v3 3/3] drm/i915/display: Configure HDMI2.1 Pcon for FRL only if Src-Ctl mode is available Shankar, Uma
2021-03-22 7:01 ` [PATCH v4 " Ankit Nautiyal
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