disp: msm: sde: reconfigure misr based on user input

In current SDE driver when misr is enabled, for each commit in
encoder kickoff stage misr is configured for both lm and interface
misr blks. This can clear misr data before client could collect misr.
This change avoids misr data clear and configures misr based on
user input.

Change-Id: I85fc19c78afc6d01346219250c82f2ada824eb0d
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>

msm/sde/sde_encoder.c

@@ -1484,6 +1484,9 @@ static void sde_encoder_misr_configure(struct drm_encoder *drm_enc,
 	}
 	sde_enc = to_sde_encoder_virt(drm_enc);
 
+	if (!sde_enc->misr_reconfigure)
+		return;
+
 	for (i = 0; i < sde_enc->num_phys_encs; i++) {
 		struct sde_encoder_phys *phys = sde_enc->phys_encs[i];
 
@@ -1492,6 +1495,7 @@ static void sde_encoder_misr_configure(struct drm_encoder *drm_enc,
 
 		phys->ops.setup_misr(phys, enable, frame_count);
 	}
+	sde_enc->misr_reconfigure = false;
 }
 
 static void sde_encoder_input_event_handler(struct input_handle *handle,
@@ -4273,6 +4277,7 @@ static ssize_t _sde_encoder_misr_setup(struct file *file,
 		return rc;
 
 	sde_enc->misr_enable = enable;
+	sde_enc->misr_reconfigure = true;
 	sde_enc->misr_frame_count = frame_count;
 	sde_encoder_misr_configure(&sde_enc->base, enable, frame_count);
 	pm_runtime_put_sync(drm_enc->dev->dev);