[PATCH v4 07/12] drm/i915/alpm: Add new interface to check if AUXLess ALPM is used

[Jouni Högander]

we need to know if AUXLess ALPM is used when preparing for link
training. Add new interface for this and use it in existing code where
possible.

v2: remove kerneldoc comment

Signed-off-by: Jouni Högander <jouni.hogan...@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nauti...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_alpm.c | 10 ++++++++--
 drivers/gpu/drm/i915/display/intel_alpm.h |  2 ++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c 
b/drivers/gpu/drm/i915/display/intel_alpm.c
index 0890247085a7..bbcf510b0c25 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.c
+++ b/drivers/gpu/drm/i915/display/intel_alpm.c
@@ -26,6 +26,13 @@ bool intel_alpm_aux_less_wake_supported(struct intel_dp 
*intel_dp)
        return intel_dp->alpm_dpcd & DP_ALPM_AUX_LESS_CAP;
 }
 
+bool intel_alpm_is_alpm_aux_less(struct intel_dp *intel_dp,
+                                const struct intel_crtc_state *crtc_state)
+{
+       return intel_psr_needs_alpm_aux_less(intel_dp, crtc_state) ||
+               (crtc_state->has_lobf && 
intel_alpm_aux_less_wake_supported(intel_dp));
+}
+
 void intel_alpm_init(struct intel_dp *intel_dp)
 {
        u8 dpcd;
@@ -341,8 +348,7 @@ 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 ((crtc_state->has_panel_replay && intel_dp_is_edp(intel_dp)) ||
-           (crtc_state->has_lobf && 
intel_alpm_aux_less_wake_supported(intel_dp))) {
+       if (intel_alpm_is_alpm_aux_less(intel_dp, crtc_state)) {
                alpm_ctl = ALPM_CTL_ALPM_ENABLE |
                        ALPM_CTL_ALPM_AUX_LESS_ENABLE |
                        ALPM_CTL_AUX_LESS_SLEEP_HOLD_TIME_50_SYMBOLS |
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.h 
b/drivers/gpu/drm/i915/display/intel_alpm.h
index c9fe21e3e72c..86f4d5ab1981 100644
--- a/drivers/gpu/drm/i915/display/intel_alpm.h
+++ b/drivers/gpu/drm/i915/display/intel_alpm.h
@@ -32,6 +32,8 @@ void intel_alpm_post_plane_update(struct intel_atomic_state 
*state,
 void intel_alpm_lobf_debugfs_add(struct intel_connector *connector);
 bool intel_alpm_aux_wake_supported(struct intel_dp *intel_dp);
 bool intel_alpm_aux_less_wake_supported(struct intel_dp *intel_dp);
+bool intel_alpm_is_alpm_aux_less(struct intel_dp *intel_dp,
+                                const struct intel_crtc_state *crtc_state);
 void intel_alpm_disable(struct intel_dp *intel_dp);
 bool intel_alpm_get_error(struct intel_dp *intel_dp);
 #endif
-- 
2.43.0