From 49b33a898d2483aa393333d7d995065319fddf91 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Roberto=20de=20Souza?= <jose.souza@intel.com>
Date: Wed, 16 Jun 2021 13:31:55 -0700
Subject: drm/i915/display/adl_p: Implement Wa_16011168373
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Git-commit: 1d53ccdc400c872265489708de6b2342e8698d1e
Patch-mainline: v5.15-rc1
References: jsc#SLE-22601
Another WA that is required for PSR2.
BSpec: 54369
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210616203158.118111-3-jose.souza@intel.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_psr.c | 15 +++++++++++++++
drivers/gpu/drm/i915/i915_reg.h | 8 ++++++++
2 files changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index c8d56387d923..e508816911fa 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1112,6 +1112,14 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp)
intel_de_rmw(dev_priv, CHICKEN_PAR1_1, IGNORE_PSR2_HW_TRACKING,
intel_dp->psr.psr2_sel_fetch_enabled ?
IGNORE_PSR2_HW_TRACKING : 0);
+
+ /* Wa_16011168373:adlp */
+ if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_A0) &&
+ intel_dp->psr.psr2_enabled)
+ intel_de_rmw(dev_priv,
+ TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder),
+ TRANS_SET_CONTEXT_LATENCY_MASK,
+ TRANS_SET_CONTEXT_LATENCY_VALUE(1));
}
static bool psr_interrupt_error_check(struct intel_dp *intel_dp)
@@ -1289,6 +1297,13 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp)
intel_de_rmw(dev_priv, CHICKEN_PAR1_1,
DIS_RAM_BYPASS_PSR2_MAN_TRACK, 0);
+ /* Wa_16011168373:adlp */
+ if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_A0) &&
+ intel_dp->psr.psr2_enabled)
+ intel_de_rmw(dev_priv,
+ TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder),
+ TRANS_SET_CONTEXT_LATENCY_MASK, 0);
+
/* Disable PSR on Sink */
drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 3af3b1f70271..e940a7e66297 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -10374,6 +10374,14 @@ enum skl_power_gate {
#define TRANS_MSA_MISC(tran) _MMIO_TRANS2(tran, _TRANSA_MSA_MISC)
/* See DP_MSA_MISC_* for the bit definitions */
+#define _TRANS_A_SET_CONTEXT_LATENCY 0x6007C
+#define _TRANS_B_SET_CONTEXT_LATENCY 0x6107C
+#define _TRANS_C_SET_CONTEXT_LATENCY 0x6207C
+#define _TRANS_D_SET_CONTEXT_LATENCY 0x6307C
+#define TRANS_SET_CONTEXT_LATENCY(tran) _MMIO_TRANS2(tran, _TRANS_A_SET_CONTEXT_LATENCY)
+#define TRANS_SET_CONTEXT_LATENCY_MASK REG_GENMASK(15, 0)
+#define TRANS_SET_CONTEXT_LATENCY_VALUE(x) REG_FIELD_PREP(TRANS_SET_CONTEXT_LATENCY_MASK, (x))
+
/* LCPLL Control */
#define LCPLL_CTL _MMIO(0x130040)
#define LCPLL_PLL_DISABLE (1 << 31)
--
2.33.1