From 8c2948ee42f6bd2cf95f25ba8614b14e9405cbed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Roberto=20de=20Souza?= <jose.souza@intel.com>
Date: Thu, 10 Feb 2022 10:52:22 -0800
Subject: drm/i915/display: Group PSR2 prog sequences and workarounds
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Git-commit: ab597bb3760ce2e7a5c48755cacf7df8abfcda6b
Patch-mainline: v5.18-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Grouping inside of the same if all the programing sequences and
workarounds of PSR2.
The order of programing changed in intel_psr_enable_source() but
it will not affect PSR2 as at this point PSR2_ENABLE is still disabled.
Cc: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220210185223.95399-1-jose.souza@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_psr.c | 77 ++++++++++++------------
1 file changed, 37 insertions(+), 40 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 00279e8c2775..77a180330256 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1069,25 +1069,6 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp)
enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
u32 mask;
- if (intel_dp->psr.psr2_enabled && DISPLAY_VER(dev_priv) == 9) {
- i915_reg_t reg = CHICKEN_TRANS(cpu_transcoder);
- u32 chicken = intel_de_read(dev_priv, reg);
-
- chicken |= PSR2_VSC_ENABLE_PROG_HEADER |
- PSR2_ADD_VERTICAL_LINE_COUNT;
- intel_de_write(dev_priv, reg, chicken);
- }
-
- /*
- * Wa_16014451276:adlp
- * All supported adlp panels have 1-based X granularity, this may
- * cause issues if non-supported panels are used.
- */
- if (IS_ALDERLAKE_P(dev_priv) &&
- intel_dp->psr.psr2_enabled)
- intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), 0,
- ADLP_1_BASED_X_GRANULARITY);
-
/*
* Per Spec: Avoid continuous PSR exit by masking MEMUP and HPD also
* mask LPSP to avoid dependency on other drivers that might block
@@ -1126,18 +1107,33 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp)
intel_dp->psr.psr2_sel_fetch_enabled ?
IGNORE_PSR2_HW_TRACKING : 0);
- /* Wa_16011168373:adl-p */
- if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) &&
- 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));
+ if (intel_dp->psr.psr2_enabled) {
+ if (DISPLAY_VER(dev_priv) == 9)
+ intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), 0,
+ PSR2_VSC_ENABLE_PROG_HEADER |
+ PSR2_ADD_VERTICAL_LINE_COUNT);
- /* Wa_16012604467:adlp */
- if (IS_ALDERLAKE_P(dev_priv) && intel_dp->psr.psr2_enabled)
- intel_de_rmw(dev_priv, CLKGATE_DIS_MISC, 0,
- CLKGATE_DIS_MISC_DMASC_GATING_DIS);
+ /*
+ * Wa_16014451276:adlp
+ * All supported adlp panels have 1-based X granularity, this may
+ * cause issues if non-supported panels are used.
+ */
+ if (IS_ALDERLAKE_P(dev_priv))
+ intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), 0,
+ ADLP_1_BASED_X_GRANULARITY);
+
+ /* Wa_16011168373:adl-p */
+ if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+ intel_de_rmw(dev_priv,
+ TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder),
+ TRANS_SET_CONTEXT_LATENCY_MASK,
+ TRANS_SET_CONTEXT_LATENCY_VALUE(1));
+
+ /* Wa_16012604467:adlp */
+ if (IS_ALDERLAKE_P(dev_priv))
+ intel_de_rmw(dev_priv, CLKGATE_DIS_MISC, 0,
+ CLKGATE_DIS_MISC_DMASC_GATING_DIS);
+ }
}
static bool psr_interrupt_error_check(struct intel_dp *intel_dp)
@@ -1290,17 +1286,18 @@ 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:adl-p */
- if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) &&
- intel_dp->psr.psr2_enabled)
- intel_de_rmw(dev_priv,
- TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder),
- TRANS_SET_CONTEXT_LATENCY_MASK, 0);
+ if (intel_dp->psr.psr2_enabled) {
+ /* Wa_16011168373:adl-p */
+ if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+ intel_de_rmw(dev_priv,
+ TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder),
+ TRANS_SET_CONTEXT_LATENCY_MASK, 0);
- /* Wa_16012604467:adlp */
- if (IS_ALDERLAKE_P(dev_priv) && intel_dp->psr.psr2_enabled)
- intel_de_rmw(dev_priv, CLKGATE_DIS_MISC,
- CLKGATE_DIS_MISC_DMASC_GATING_DIS, 0);
+ /* Wa_16012604467:adlp */
+ if (IS_ALDERLAKE_P(dev_priv))
+ intel_de_rmw(dev_priv, CLKGATE_DIS_MISC,
+ CLKGATE_DIS_MISC_DMASC_GATING_DIS, 0);
+ }
intel_snps_phy_update_psr_power_state(dev_priv, phy, false);
--
2.38.1