disp: msm: dsi: optimize wait time in DSI timing DB update

Timing DB needs to be disabled after panel vnsyc.
Update the wait time to reflect difference in line time
between MDP and panel vsync.

Change-Id: Ib5282d67995e8379ead928218f31a8f9fe7fa978
Signed-off-by: Shamika Joshi <quic_shamjosh@quicinc.com>

msm/sde/sde_encoder.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
  * Copyright (c) 2014-2021, The Linux Foundation. All rights reserved.
  * Copyright (C) 2013 Red Hat
  * Author: Rob Clark <robdclark@gmail.com>
@@ -155,6 +155,25 @@ void sde_encoder_uidle_enable(struct drm_encoder *drm_enc, bool enable)
 	}
 }
 
+u32 sde_encoder_get_programmed_fetch_time(struct drm_encoder *drm_enc)
+{
+	struct sde_encoder_virt *sde_enc;
+	struct sde_encoder_phys *phys;
+	bool is_vid;
+
+	sde_enc = to_sde_encoder_virt(drm_enc);
+
+	if (!sde_enc || !sde_enc->phys_encs[0]) {
+		SDE_ERROR("invalid params\n");
+		return U32_MAX;
+	}
+
+	phys = sde_enc->phys_encs[0];
+	is_vid = sde_encoder_check_curr_mode(drm_enc, MSM_DISPLAY_VIDEO_MODE);
+
+	return is_vid ? phys->pf_time_in_us : 0;
+}
+
 ktime_t sde_encoder_calc_last_vsync_timestamp(struct drm_encoder *drm_enc)
 {
 	struct sde_encoder_virt *sde_enc;