Lunarlake has some configurations in ALPM_CTL register for legacy ALPM as
well. Write these.
Bspec: 71477
v2: move version check to lnl_alpm_configure
Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_psr.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 7aedda0ca2d2..72cadad09db5 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1554,6 +1554,21 @@ static void wm_optimization_wa(struct intel_dp *intel_dp,
wa_16013835468_bit_get(intel_dp), 0);
}
+static void lnl_alpm_configure(struct intel_dp *intel_dp)
+{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+ enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
+ struct intel_psr *psr = &intel_dp->psr;
+
+ if (DISPLAY_VER(dev_priv) < 20)
+ return;
+
+ intel_de_write(dev_priv, ALPM_CTL(cpu_transcoder),
+ ALPM_CTL_EXTENDED_FAST_WAKE_ENABLE |
+ ALPM_CTL_ALPM_ENTRY_CHECK(psr->alpm_parameters.check_entry_lines) |
+ ALPM_CTL_EXTENDED_FAST_WAKE_TIME(psr->alpm_parameters.fast_wake_lines));
+}
+
static void intel_psr_enable_source(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
@@ -1619,6 +1634,8 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
intel_dp->psr.psr2_sel_fetch_enabled ?
IGNORE_PSR2_HW_TRACKING : 0);
+ lnl_alpm_configure(intel_dp);
+
/*
* Wa_16013835468
* Wa_14015648006
--
2.34.1
