From 99fc38b12095cd0ca9fc5b8c8e27e827dff6ed34 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Roberto=20de=20Souza?= <jose.souza@intel.com>
Date: Tue, 20 Aug 2019 15:33:24 -0700
Subject: drm/i915: Add transcoder restriction to PSR2
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Git-commit: 99fc38b12095cd0ca9fc5b8c8e27e827dff6ed34
Patch-mainline: v5.5-rc1
References: bsc#1152489
According to PSR2_CTL definition in BSpec there is only one instance
of PSR2_CTL. Platforms gen < 12 with EDP transcoder only support PSR2
on TRANSCODER_EDP while on TGL PSR2 is only supported by
TRANSCODER_A.
Since BDW PSR is allowed on any port, but we need to restrict by
transcoder.
v8: Renamed _psr2_supported_in_trans() to psr2_supported() (Lucas)
v9: Renamed psr2_supported() to transcoder_has_psr2() (Ville)
BSpec: 7713
BSpec: 20584
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190820223325.27490-2-jose.souza@intel.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/display/intel_psr.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 77232f6bca17..771d9a40bf12 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -534,6 +534,15 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
I915_WRITE(EDP_PSR2_CTL(dev_priv->psr.transcoder), val);
}
+static bool
+transcoder_has_psr2(struct drm_i915_private *dev_priv, enum transcoder trans)
+{
+ if (INTEL_GEN(dev_priv) >= 12)
+ return trans == TRANSCODER_A;
+ else
+ return trans == TRANSCODER_EDP;
+}
+
static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state)
{
@@ -545,6 +554,12 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
if (!dev_priv->psr.sink_psr2_support)
return false;
+ if (!transcoder_has_psr2(dev_priv, crtc_state->cpu_transcoder)) {
+ DRM_DEBUG_KMS("PSR2 not supported in transcoder %s\n",
+ transcoder_name(crtc_state->cpu_transcoder));
+ return false;
+ }
+
/*
* DSC and PSR2 cannot be enabled simultaneously. If a requested
* resolution requires DSC to be enabled, priority is given to DSC
--
2.28.0