disp: msm: sde: add ctl reset during wait for commit done timeout

During one of the DP timeout usecases, flush doesn't take
effect due to vid vblank wait failure. As a result, smmu
faults are observed because of fetching the previously
staged planes. This change adds ctl reset in the same
DP atomic commit context to recover and avoid
smmu faults.

Change-Id: I2f9aceca56e27f140607317f7596d6fe0d908af8
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>

msm/sde/sde_crtc.c

@@ -3892,11 +3892,8 @@ int sde_crtc_reset_hw(struct drm_crtc *crtc, struct drm_crtc_state *old_state,
 	}
 
 	/* Early out if simple ctl reset succeeded */
-	if (i == sde_crtc->num_ctls) {
+	if (i == sde_crtc->num_ctls)
-		sde_kms_update_recovery_mask(_sde_crtc_get_kms(crtc),
-			crtc, false);
 		return 0;
-	}
 
 	SDE_DEBUG("crtc%d: issuing hard reset\n", DRMID(crtc));
 
@@ -3954,8 +3951,6 @@ int sde_crtc_reset_hw(struct drm_crtc *crtc, struct drm_crtc_state *old_state,
 			sde_encoder_kickoff(encoder, false, true);
 	}
 
-	sde_kms_update_recovery_mask(_sde_crtc_get_kms(crtc),
-			crtc, false);
 	/* panic the device if VBIF is not in good state */
 	return !recovery_events ? 0 : -EAGAIN;
 }
@@ -4030,8 +4025,6 @@ void sde_crtc_commit_kickoff(struct drm_crtc *crtc,
 						params.recovery_events_enabled))
 			is_error = true;
 		sde_crtc->needs_hw_reset = false;
-	} else {
-		sde_kms_update_recovery_mask(sde_kms, crtc, false);
 	}
 
 	sde_crtc_calc_fps(sde_crtc);
@@ -4052,10 +4045,9 @@ void sde_crtc_commit_kickoff(struct drm_crtc *crtc,
 
 	sde_vbif_clear_errors(sde_kms);
 
-	if (is_error || sde_kms->recovery_mask) {
+	if (is_error) {
 		_sde_crtc_remove_pipe_flush(crtc);
 		_sde_crtc_blend_setup(crtc, old_state, false);
-		SDE_EVT32(sde_kms->recovery_mask);
 	}
 
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {

msm/sde/sde_crtc.h

@@ -29,6 +29,7 @@
 #include "sde_core_perf.h"
 #include "sde_hw_ds.h"
 #include "sde_color_processing.h"
+#include "sde_encoder.h"
 
 #define SDE_CRTC_NAME_SIZE	12
 
@@ -632,12 +633,15 @@ int sde_crtc_reset_hw(struct drm_crtc *crtc, struct drm_crtc_state *old_state,
 /**
  * sde_crtc_request_frame_reset - requests for next frame reset
  * @crtc: Pointer to drm crtc object
+ * @encoder: Pointer to drm encoder object
  */
-static inline int sde_crtc_request_frame_reset(struct drm_crtc *crtc)
+static inline int sde_crtc_request_frame_reset(struct drm_crtc *crtc,
+		struct drm_encoder *encoder)
 {
 	struct sde_crtc *sde_crtc = to_sde_crtc(crtc);
 
-	if (sde_crtc->frame_trigger_mode == FRAME_DONE_WAIT_POSTED_START)
+	if (sde_crtc->frame_trigger_mode == FRAME_DONE_WAIT_POSTED_START ||
+			!sde_encoder_is_dsi_display(encoder))
 		sde_crtc_reset_hw(crtc, crtc->state, false);
 
 	return 0;

msm/sde/sde_kms.c

@@ -1531,31 +1531,6 @@ static void sde_kms_complete_commit(struct msm_kms *kms,
 	SDE_ATRACE_END("sde_kms_complete_commit");
 }
 
-void sde_kms_update_recovery_mask(struct sde_kms *sde_kms,
-		struct drm_crtc *crtc, bool flag)
-{
-	int i;
-	struct sde_hw_ctl *ctl;
-	struct sde_crtc *sde_crtc;
-
-	if (!crtc || !sde_kms) {
-		SDE_ERROR("invalid params\n");
-		return;
-	}
-
-	sde_crtc = to_sde_crtc(crtc);
-
-	for (i = 0; i < sde_crtc->num_ctls; ++i) {
-		ctl = sde_crtc->mixers[i].hw_ctl;
-		if (!ctl || !ctl->ops.reset)
-			continue;
-		if (flag)
-			sde_kms->recovery_mask |= BIT(ctl->idx - CTL_0);
-		else
-			sde_kms->recovery_mask &= ~BIT(ctl->idx - CTL_0);
-	}
-}
-
 static void sde_kms_wait_for_commit_done(struct msm_kms *kms,
 		struct drm_crtc *crtc)
 {
@@ -1605,9 +1580,7 @@ static void sde_kms_wait_for_commit_done(struct msm_kms *kms,
 		ret = sde_encoder_wait_for_event(encoder, MSM_ENC_COMMIT_DONE);
 		if (ret && ret != -EWOULDBLOCK) {
 			SDE_ERROR("wait for commit done returned %d\n", ret);
-			sde_kms_update_recovery_mask(to_sde_kms(kms),
+			sde_crtc_request_frame_reset(crtc, encoder);
-				crtc, true);
-			sde_crtc_request_frame_reset(crtc);
 			break;
 		}
 

msm/sde/sde_kms.h

@@ -274,7 +274,6 @@ struct sde_kms {
 	int irq_num;	/* mdss irq number */
 	bool irq_enabled;
 
-	int recovery_mask;
 	struct sde_core_perf perf;
 
 	/* saved atomic state during system suspend */
@@ -765,14 +764,4 @@ int sde_kms_vm_trusted_prepare_commit(struct sde_kms *sde_kms,
  */
 int sde_kms_vm_primary_prepare_commit(struct sde_kms *sde_kms,
 					   struct drm_atomic_state *state);
-
-/**
- * sde_kms_update_recovery_mask - function to update recovery ctl mask
- *				  during error cases
- * @sde_kms: pointer to sde_kms
- * @crtc: pointer to drm_crtc
- * @flag: to determine whether to clear/set recovery mask
- */
-void sde_kms_update_recovery_mask(struct sde_kms *sde_kms,
-					struct drm_crtc *crtc, bool flag);
 #endif /* __sde_kms_H__ */