On 9/10/21 2:07 AM, José Roberto de Souza wrote:
Wa_16014451276 fixes the starting coordinate for PSR2 selective
updates. CHICKEN_TRANS definition of the workaround bit has a wrong
name based on workaround definition and HSD.
Wa_14014971508 allows the screen to continue to be updated when
coming back from DC5/DC6 and SF_SINGLE_FULL_FRAME bit is not kept
set in PSR2_MAN_TRK_CTL.
Wa_16012604467 fixes underruns when exiting PSR2 when it is in one
of its internal states.
Wa_14014971508 is still in pending status in BSpec but by
the time this is reviewed and ready to be merged it will be finalized.
BSpec: 54369
BSpec: 50054
Cc: Gwan-gyeong Mun <gwan-gyeong....@intel.com>
Signed-off-by: José Roberto de Souza <jose.so...@intel.com>
---
drivers/gpu/drm/i915/display/intel_psr.c | 23 ++++++++++++++++++++++-
drivers/gpu/drm/i915/i915_reg.h | 4 ++++
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
b/drivers/gpu/drm/i915/display/intel_psr.c
index 36816abb3bcc0..92c0b2159559f 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1086,6 +1086,12 @@ static void intel_psr_enable_source(struct intel_dp
*intel_dp)
intel_de_write(dev_priv, reg, chicken);
}
+ /* Wa_16014451276:adlp */
+ if (IS_ALDERLAKE_P(dev_priv) &&
+ intel_dp->psr.psr2_enabled)
+ intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), 0,
+ D13_1_BASED_X_GRANULARITY);
Depending on the capability of the PSR panel, the following setting may
not be necessary, could you add some comments such as "force enable
1-based X granularity on PSR2 VSC SDP"?
+
/*
* Per Spec: Avoid continuous PSR exit by masking MEMUP and HPD also
* mask LPSP to avoid dependency on other drivers that might block
@@ -1131,6 +1137,11 @@ static void intel_psr_enable_source(struct intel_dp
*intel_dp)
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_dp->psr.psr2_enabled)
+ 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)
@@ -1320,6 +1331,11 @@ static void intel_psr_disable_locked(struct intel_dp
*intel_dp)
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);
+
intel_snps_phy_update_psr_power_state(dev_priv, phy, false);
/* Disable PSR on Sink */
@@ -1488,8 +1504,13 @@ static void psr2_man_trk_ctl_calc(struct
intel_crtc_state *crtc_state,
u32 val = PSR2_MAN_TRK_CTL_ENABLE;
if (full_update) {
+ /*
+ * Wa_14014971508:adlp
+ * SINGLE_FULL_FRAME bit is not hold in register so can not be
+ * restored by DMC, so using CONTINUOS_FULL_FRAME to mimic that
+ */
if (IS_ALDERLAKE_P(dev_priv))
- val |= ADLP_PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME;
+ val |= ADLP_PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME;
else
val |= PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c2853cc005ee6..0de2f7541da6c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8235,6 +8235,7 @@ enum {
#define VSC_DATA_SEL_SOFTWARE_CONTROL REG_BIT(25) /* GLK */
#define FECSTALL_DIS_DPTSTREAM_DPTTG REG_BIT(23)
#define DDI_TRAINING_OVERRIDE_ENABLE REG_BIT(19)
+#define D13_1_BASED_X_GRANULARITY REG_BIT(18)
The meaning of this macro is to set "force enable 1-based X granularity
on PSR2 VSC SDP" in Display 13.1 ADL, so the meaning of the macro may be
a little ambiguous.
#define DDI_TRAINING_OVERRIDE_VALUE REG_BIT(18)
#define DDIE_TRAINING_OVERRIDE_ENABLE REG_BIT(17) /* CHICKEN_TRANS_A
only */
#define DDIE_TRAINING_OVERRIDE_VALUE REG_BIT(16) /* CHICKEN_TRANS_A only */
@@ -12789,4 +12790,7 @@ enum skl_power_gate {
#define CLKREQ_POLICY _MMIO(0x101038)
#define CLKREQ_POLICY_MEM_UP_OVRD REG_BIT(1)
+#define CLKGATE_DIS_MISC _MMIO(0x46534)
+#define CLKGATE_DIS_MISC_DMASC_GATING_DIS REG_BIT(21)
+
#endif /* _I915_REG_H_ */
