Commit 5d9d4feb authored by Jouni Högander's avatar Jouni Högander
Browse files

drm/i915/alpm: Add new interface to check if AUXLess ALPM is used 



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: default avatarJouni Högander <jouni.hogander@intel.com>
Reviewed-by: default avatarAnkit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://lore.kernel.org/r/20250526120512.1702815-8-jouni.hogander@intel.com
parent e6503d10

drivers/gpu/drm/i915/display/intel_alpm.c

+8 −2
Original line number Diff line number Diff line
@@ -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 |

drivers/gpu/drm/i915/display/intel_alpm.h

+2 −0
Original line number Diff line number Diff line
@@ -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