[PATCH 4/4] drm/i915/alpm: Alpm aux wake configuration for lnl

[Jouni Högander]

Lunarlake has some configurations in ALPM_CTL register for legacy ALPM as
well. Write these.

Bspec: 71477

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
---
 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 df60b4fb0d65..47dcfc164319 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1534,6 +1534,18 @@ 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 alpm_parameters *alpm_params = &intel_dp->psr.alpm_params;
+
+	intel_de_write(dev_priv, ALPM_CTL(cpu_transcoder),
+		       ALPM_CTL_EXTENDED_FAST_WAKE_ENABLE |
+		       ALPM_CTL_ALPM_ENTRY_CHECK(alpm_params->check_entry_lines) |
+		       ALPM_CTL_EXTENDED_FAST_WAKE_TIME(alpm_params->fast_wake_lines));
+}
+
 static void intel_psr_enable_source(struct intel_dp *intel_dp,
 				    const struct intel_crtc_state *crtc_state)
 {
@@ -1589,6 +1601,9 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
 			     intel_dp->psr.psr2_sel_fetch_enabled ?
 			     IGNORE_PSR2_HW_TRACKING : 0);
 
+	if (DISPLAY_VER(dev_priv) >= 20)
+		lnl_alpm_configure(intel_dp);
+
 	/*
 	 * Wa_16013835468
 	 * Wa_14015648006
-- 
2.34.1