Set the Link Off Between Frames Enable bit in ALPM_CTL register.
Note: Lobf need to be enabled adaptive sync fixed refresh mode
where vmin = vmax = flipline, which will arise after cmmr feature
enablement. Will add enabling sequence in a separate patch.
v1: Initial version.
v2: Condition check modified in alpm_configure(). [Jouni]
Signed-off-by: Animesh Manna <animesh.manna@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_alpm.c | 16 +++++++++++-----
drivers/gpu/drm/i915/display/intel_alpm.h | 4 ++--
drivers/gpu/drm/i915/display/intel_psr.c | 2 +-
3 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c
index c2334197e723..8f4da817ef55 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.c
+++ b/drivers/gpu/drm/i915/display/intel_alpm.c
@@ -304,10 +304,11 @@ void intel_alpm_compute_lobf_config(struct intel_dp *intel_dp,
(first_sdp_position + waketime_in_lines);
}
-static void lnl_alpm_configure(struct intel_dp *intel_dp)
+static void lnl_alpm_configure(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
+ enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
u32 alpm_ctl;
if (DISPLAY_VER(dev_priv) < 20 || (!intel_dp->psr.sel_update_enabled &&
@@ -318,7 +319,8 @@ static void lnl_alpm_configure(struct intel_dp *intel_dp)
* Panel Replay on eDP is always using ALPM aux less. I.e. no need to
* check panel support at this point.
*/
- if (intel_dp->psr.panel_replay_enabled && intel_dp_is_edp(intel_dp)) {
+ if ((intel_dp->psr.panel_replay_enabled && intel_dp_is_edp(intel_dp)) ||
+ (crtc_state->has_lobf && intel_alpm_aux_less_wake_supported(intel_dp))) {
alpm_ctl = ALPM_CTL_ALPM_ENABLE |
ALPM_CTL_ALPM_AUX_LESS_ENABLE |
ALPM_CTL_AUX_LESS_SLEEP_HOLD_TIME_50_SYMBOLS;
@@ -345,12 +347,16 @@ static void lnl_alpm_configure(struct intel_dp *intel_dp)
ALPM_CTL_EXTENDED_FAST_WAKE_TIME(intel_dp->alpm_parameters.fast_wake_lines);
}
+ if (crtc_state->has_lobf)
+ alpm_ctl |= ALPM_CTL_LOBF_ENABLE;
+
alpm_ctl |= ALPM_CTL_ALPM_ENTRY_CHECK(intel_dp->alpm_parameters.check_entry_lines);
intel_de_write(dev_priv, ALPM_CTL(dev_priv, cpu_transcoder), alpm_ctl);
}
-void intel_alpm_configure(struct intel_dp *intel_dp)
+void intel_alpm_configure(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state)
{
- lnl_alpm_configure(intel_dp);
+ lnl_alpm_configure(intel_dp, crtc_state);
}
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.h b/drivers/gpu/drm/i915/display/intel_alpm.h
index 45c07f023a63..fd9be8aa876c 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.h
+++ b/drivers/gpu/drm/i915/display/intel_alpm.h
@@ -18,6 +18,6 @@ bool intel_alpm_compute_params(struct intel_dp *intel_dp,
void intel_alpm_compute_lobf_config(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state);
-void intel_alpm_configure(struct intel_dp *intel_dp);
-
+void intel_alpm_configure(struct intel_dp *intel_dp,
+ const struct intel_crtc_state *crtc_state);
#endif
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index e2d3be0bf99c..10c71e79a1c8 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1692,7 +1692,7 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
IGNORE_PSR2_HW_TRACKING : 0);
if (intel_dp_is_edp(intel_dp))
- intel_alpm_configure(intel_dp);
+ intel_alpm_configure(intel_dp, crtc_state);
/*
* Wa_16013835468
--
2.29.0
