disp: msm: sde: clean up LTM driver states when lastclose is called

Clean up LTM buffers and reset LTM related lists when lastclose is
call to make sure LTM will be in clean state when hwc restarts or
when user runs LTM driver lua tests.

Change-Id: Ib2af68e70f2e5ff246aca890487085bc46dca7da
Signed-off-by: Ping Li <[email protected]>

msm/sde/sde_color_processing.c

@@ -1588,10 +1588,8 @@ void sde_cp_crtc_destroy_properties(struct drm_crtc *crtc)
 	mutex_destroy(&sde_crtc->crtc_cp_lock);
 	INIT_LIST_HEAD(&sde_crtc->active_list);
 	INIT_LIST_HEAD(&sde_crtc->dirty_list);
-	INIT_LIST_HEAD(&sde_crtc->feature_list);
 	INIT_LIST_HEAD(&sde_crtc->ad_dirty);
 	INIT_LIST_HEAD(&sde_crtc->ad_active);
-	mutex_destroy(&sde_crtc->ltm_buffer_lock);
 	INIT_LIST_HEAD(&sde_crtc->ltm_buf_free);
 	INIT_LIST_HEAD(&sde_crtc->ltm_buf_busy);
 }
@@ -1645,6 +1643,7 @@ void sde_cp_crtc_clear(struct drm_crtc *crtc)
 {
 	struct sde_crtc *sde_crtc = NULL;
 	unsigned long flags;
+	u32 i = 0;
 
 	if (!crtc) {
 		DRM_ERROR("crtc %pK\n", crtc);
@@ -1666,6 +1665,21 @@ void sde_cp_crtc_clear(struct drm_crtc *crtc)
 	spin_lock_irqsave(&sde_crtc->spin_lock, flags);
 	list_del_init(&sde_crtc->user_event_list);
 	spin_unlock_irqrestore(&sde_crtc->spin_lock, flags);
+
+	for (i = 0; i < sde_crtc->ltm_buffer_cnt; i++) {
+		if (sde_crtc->ltm_buffers[i]) {
+			msm_gem_put_vaddr(sde_crtc->ltm_buffers[i]->gem);
+			drm_framebuffer_put(sde_crtc->ltm_buffers[i]->fb);
+			msm_gem_put_iova(sde_crtc->ltm_buffers[i]->gem,
+					sde_crtc->ltm_buffers[i]->aspace);
+			kfree(sde_crtc->ltm_buffers[i]);
+			sde_crtc->ltm_buffers[i] = NULL;
+		}
+	}
+	sde_crtc->ltm_buffer_cnt = 0;
+	sde_crtc->ltm_hist_en = false;
+	INIT_LIST_HEAD(&sde_crtc->ltm_buf_free);
+	INIT_LIST_HEAD(&sde_crtc->ltm_buf_busy);
 }
 
 static void dspp_pcc_install_property(struct drm_crtc *crtc)