Merge branch 'tizen' into sandbox/cyeon/devel
[platform/core/uifw/libtdm.git] / src / tdm_layer.c
index 9add055..b6f07f0 100644 (file)
@@ -9,7 +9,7 @@
  *          Taeheon Kim <th908.kim@samsung.com>,
  *          YoungJun Cho <yj44.cho@samsung.com>,
  *          SooChan Lim <sc1.lim@samsung.com>,
- *          Boram Park <sc1.lim@samsung.com>
+ *          Boram Park <boram1288.park@samsung.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the
        private_output = private_layer->private_output; \
        private_display = private_output->private_display
 
-static void _tdm_layer_free_buffer(tdm_private_layer *private_layer, tdm_private_layer_buffer *layer_buffer);
+#define OUTPUT_HWC_CAP_CHECK() \
+       if (private_output->caps.capabilities & TDM_OUTPUT_CAPABILITY_HWC) { \
+               TDM_ERR("output(%p) support HWC. Use HWC functions", private_output); \
+               _pthread_mutex_unlock(&private_display->lock); \
+               return TDM_ERROR_OPERATION_FAILED; \
+       }
+
+#define OUTPUT_HWC_CAP_CHECK_ERROR() \
+       if (private_output->caps.capabilities & TDM_OUTPUT_CAPABILITY_HWC) { \
+               TDM_ERR("output(%p) support HWC. Use HWC functions", private_output); \
+               if (error) *error = TDM_ERROR_OPERATION_FAILED; \
+               _pthread_mutex_unlock(&private_display->lock); \
+               return NULL; \
+       }
+
+#define OUTPUT_HWC_CAP_CHECK_VOID_RETURN() \
+       if (private_output->caps.capabilities & TDM_OUTPUT_CAPABILITY_HWC)  { \
+               TDM_ERR("output(%p) support HWC. Use HWC functions", private_output); \
+               _pthread_mutex_unlock(&private_display->lock); \
+               return; \
+       }
+
+/* LCOV_EXCL_START */
 static void _tdm_layer_cb_wait_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequence,
                                                                          unsigned int tv_sec, unsigned int tv_usec, void *user_data);
 static void _tbm_layer_queue_acquirable_cb(tbm_surface_queue_h surface_queue, void *data);
@@ -89,6 +111,8 @@ tdm_layer_get_output(tdm_layer *layer, tdm_error *error)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK_ERROR();
+
        if (error)
                *error = TDM_ERROR_NONE;
 
@@ -100,6 +124,24 @@ tdm_layer_get_output(tdm_layer *layer, tdm_error *error)
 }
 
 EXTERN tdm_error
+tdm_layer_get_index(tdm_layer *layer, int *index)
+{
+       LAYER_FUNC_ENTRY();
+
+       TDM_RETURN_VAL_IF_FAIL(index != NULL, TDM_ERROR_INVALID_PARAMETER);
+
+       _pthread_mutex_lock(&private_display->lock);
+
+       OUTPUT_HWC_CAP_CHECK();
+
+       *index = private_layer->index;
+
+       _pthread_mutex_unlock(&private_display->lock);
+
+       return ret;
+}
+
+EXTERN tdm_error
 tdm_layer_get_capabilities(tdm_layer *layer, tdm_layer_capability *capabilities)
 {
        LAYER_FUNC_ENTRY();
@@ -108,6 +150,8 @@ tdm_layer_get_capabilities(tdm_layer *layer, tdm_layer_capability *capabilities)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        *capabilities = private_layer->caps.capabilities;
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -125,6 +169,8 @@ tdm_layer_get_available_formats(tdm_layer *layer, const tbm_format **formats, in
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        *formats = (const tbm_format *)private_layer->caps.formats;
        *count = private_layer->caps.format_count;
 
@@ -143,6 +189,8 @@ tdm_layer_get_available_properties(tdm_layer *layer, const tdm_prop **props, int
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        *props = (const tdm_prop *)private_layer->caps.props;
        *count = private_layer->caps.prop_count;
 
@@ -160,6 +208,8 @@ tdm_layer_get_zpos(tdm_layer *layer, int *zpos)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        *zpos = private_layer->caps.zpos;
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -170,24 +220,26 @@ tdm_layer_get_zpos(tdm_layer *layer, int *zpos)
 EXTERN tdm_error
 tdm_layer_set_property(tdm_layer *layer, unsigned int id, tdm_value value)
 {
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        LAYER_FUNC_ENTRY();
 
        _pthread_mutex_lock(&private_display->lock);
 
-       func_layer = &private_display->func_layer;
+       OUTPUT_HWC_CAP_CHECK();
+
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (private_layer->usable)
-               TDM_INFO("layer(%d) not usable", private_layer->index);
+               TDM_INFO("layer(%p,%d) not usable", private_layer, private_layer->index);
 
        private_layer->usable = 0;
 
        if (!func_layer->layer_set_property) {
-               /* LCOV_EXCL_START */
                _pthread_mutex_unlock(&private_display->lock);
                TDM_ERR("not implemented!!");
                return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_STOP */
        }
 
        ret = func_layer->layer_set_property(private_layer->layer_backend, id, value);
@@ -200,6 +252,7 @@ tdm_layer_set_property(tdm_layer *layer, unsigned int id, tdm_value value)
 EXTERN tdm_error
 tdm_layer_get_property(tdm_layer *layer, unsigned int id, tdm_value *value)
 {
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        LAYER_FUNC_ENTRY();
 
@@ -207,14 +260,15 @@ tdm_layer_get_property(tdm_layer *layer, unsigned int id, tdm_value *value)
 
        _pthread_mutex_lock(&private_display->lock);
 
-       func_layer = &private_display->func_layer;
+       OUTPUT_HWC_CAP_CHECK();
+
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (!func_layer->layer_get_property) {
-               /* LCOV_EXCL_START */
                _pthread_mutex_unlock(&private_display->lock);
                TDM_ERR("not implemented!!");
                return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_SOP */
        }
 
        ret = func_layer->layer_get_property(private_layer->layer_backend, id, value);
@@ -227,23 +281,21 @@ tdm_layer_get_property(tdm_layer *layer, unsigned int id, tdm_value *value)
 INTERN tdm_error
 tdm_layer_set_info_internal(tdm_private_layer *private_layer, tdm_info_layer *info)
 {
-       tdm_private_output *private_output = private_layer->private_output;
-       tdm_private_display *private_display = private_output->private_display;
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        char fmtstr[128];
 
-       func_layer = &private_display->func_layer;
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (private_layer->usable)
-               TDM_INFO("layer(%p) not usable", private_layer);
+               TDM_INFO("layer(%p,%d) not usable", private_layer, private_layer->index);
 
        private_layer->usable = 0;
 
        if (!func_layer->layer_set_info) {
-               /* LCOV_EXCL_START */
                TDM_ERR("not implemented!!");
                return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_STOP */
        }
 
        if (info->src_config.format)
@@ -251,8 +303,9 @@ tdm_layer_set_info_internal(tdm_private_layer *private_layer, tdm_info_layer *in
        else
                snprintf(fmtstr, 128, "NONE");
 
-       TDM_INFO("layer(%p) info: src(%ux%u %u,%u %ux%u %s) dst(%u,%u %ux%u) trans(%d)",
-                        private_layer, info->src_config.size.h, info->src_config.size.v,
+       TDM_INFO("layer(%p,%d) info: src(%ux%u %u,%u %ux%u %s) dst(%u,%u %ux%u) trans(%d)",
+                        private_layer, private_layer->index,
+                        info->src_config.size.h, info->src_config.size.v,
                         info->src_config.pos.x, info->src_config.pos.y,
                         info->src_config.pos.w, info->src_config.pos.h,
                         fmtstr,
@@ -275,6 +328,8 @@ tdm_layer_set_info(tdm_layer *layer, tdm_info_layer *info)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        ret = tdm_layer_set_info_internal(private_layer, info);
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -285,6 +340,7 @@ tdm_layer_set_info(tdm_layer *layer, tdm_info_layer *info)
 EXTERN tdm_error
 tdm_layer_get_info(tdm_layer *layer, tdm_info_layer *info)
 {
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        LAYER_FUNC_ENTRY();
 
@@ -292,14 +348,15 @@ tdm_layer_get_info(tdm_layer *layer, tdm_info_layer *info)
 
        _pthread_mutex_lock(&private_display->lock);
 
-       func_layer = &private_display->func_layer;
+       OUTPUT_HWC_CAP_CHECK();
+
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (!func_layer->layer_get_info) {
-               /* LCOV_EXCL_START */
                _pthread_mutex_unlock(&private_display->lock);
                TDM_ERR("not implemented!!");
                return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_STOP */
        }
 
        ret = func_layer->layer_get_info(private_layer->layer_backend, info);
@@ -309,7 +366,6 @@ tdm_layer_get_info(tdm_layer *layer, tdm_info_layer *info)
        return ret;
 }
 
-/* LCOV_EXCL_START */
 static void
 _tdm_layer_dump_buffer(tdm_layer *layer, tbm_surface_h buffer)
 {
@@ -321,6 +377,7 @@ _tdm_layer_dump_buffer(tdm_layer *layer, tbm_surface_h buffer)
        tdm_private_layer *l = NULL;
        char *p = bufs;
        int *remain = &len;
+       int n;
 
        pipe = private_output->pipe;
        zpos = private_layer->caps.zpos;
@@ -332,17 +389,19 @@ _tdm_layer_dump_buffer(tdm_layer *layer, tbm_surface_h buffer)
                TDM_SNPRINTF(p, remain, "_%p", l->showing_buffer->buffer);
        }
 
-       snprintf(fname, sizeof(fname), "tdm_%d_lyr_%d%s", pipe, zpos, bufs);
+       n = snprintf(fname, sizeof(fname), "tdm_%d_lyr_%d%s", pipe, zpos, bufs);
+       if ((size_t)n >= sizeof(fname)) {
+               fname[sizeof(fname) - 1] = '\0';
+       }
 
        tbm_surface_internal_dump_buffer(buffer, fname);
        TDM_DBG("%s dump excute", fname);
 
        return;
 }
-/* LCOV_EXCL_STOP */
 
-static void
-_tdm_layer_free_buffer(tdm_private_layer *private_layer, tdm_private_layer_buffer *layer_buffer)
+void
+tdm_layer_free_buffer(tdm_private_layer *private_layer, tdm_private_layer_buffer *layer_buffer)
 {
        tdm_private_display *private_display;
 
@@ -374,30 +433,30 @@ _tdm_layer_free_all_buffers(tdm_private_layer *private_layer)
        _tdm_layer_reset_pending_data(private_layer);
 
        if (private_layer->waiting_buffer) {
-               _tdm_layer_free_buffer(private_layer, private_layer->waiting_buffer);
+               tdm_layer_free_buffer(private_layer, private_layer->waiting_buffer);
                private_layer->waiting_buffer = NULL;
 
                if (tdm_debug_module & TDM_DEBUG_BUFFER)
-                       TDM_INFO("layer(%p) waiting_buffer(%p)",
-                                        private_layer, private_layer->waiting_buffer);
+                       TDM_INFO("layer(%p,%d) waiting_buffer(%p)",
+                                        private_layer, private_layer->index, private_layer->waiting_buffer);
        }
 
        if (private_layer->committed_buffer) {
-               _tdm_layer_free_buffer(private_layer, private_layer->committed_buffer);
+               tdm_layer_free_buffer(private_layer, private_layer->committed_buffer);
                private_layer->committed_buffer = NULL;
 
                if (tdm_debug_module & TDM_DEBUG_BUFFER)
-                       TDM_INFO("layer(%p) committed_buffer(%p)",
-                                        private_layer, private_layer->committed_buffer);
+                       TDM_INFO("layer(%p,%d) committed_buffer(%p)",
+                                        private_layer, private_layer->index, private_layer->committed_buffer);
        }
 
        if (private_layer->showing_buffer) {
-               _tdm_layer_free_buffer(private_layer, private_layer->showing_buffer);
+               tdm_layer_free_buffer(private_layer, private_layer->showing_buffer);
                private_layer->showing_buffer = NULL;
 
                if (tdm_debug_module & TDM_DEBUG_BUFFER)
-                       TDM_INFO("layer(%p) showing_buffer(%p)",
-                                        private_layer, private_layer->showing_buffer);
+                       TDM_INFO("layer(%p,%d) showing_buffer(%p)",
+                                        private_layer, private_layer->index, private_layer->showing_buffer);
        }
 
        LIST_FOR_EACH_ENTRY_SAFE(lm, lmm, &private_output->layer_commit_handler_list, link) {
@@ -410,7 +469,7 @@ _tdm_layer_free_all_buffers(tdm_private_layer *private_layer)
        LIST_FOR_EACH_ENTRY_SAFE(lm, lmm, &clone_list, link) {
                LIST_DEL(&lm->link);
                tdm_output_remove_commit_handler_internal(private_output, _tdm_layer_cb_output_commit, lm);
-               _tdm_layer_free_buffer(private_layer, lm->committed_buffer);
+               tdm_layer_free_buffer(private_layer, lm->committed_buffer);
                free(lm);
        }
 
@@ -423,7 +482,7 @@ _tdm_layer_free_all_buffers(tdm_private_layer *private_layer)
 
        LIST_FOR_EACH_ENTRY_SAFE(lm, lmm, &clone_list, link) {
                LIST_DEL(&lm->link);
-               _tdm_layer_free_buffer(private_layer, lm->committed_buffer);
+               tdm_layer_free_buffer(private_layer, lm->committed_buffer);
                free(lm);
        }
 
@@ -437,11 +496,10 @@ _tdm_layer_free_all_buffers(tdm_private_layer *private_layer)
 INTERN tdm_error
 tdm_layer_set_buffer_internal(tdm_private_layer *private_layer, tbm_surface_h buffer)
 {
+       tdm_private_module *private_module;
        tdm_private_output *private_output = private_layer->private_output;
-       tdm_private_display *private_display = private_output->private_display;
        tdm_func_layer *func_layer;
 
-       /* LCOV_EXCL_START */
        /* dump buffer */
        if (tdm_dump_enable && !(private_layer->caps.capabilities & TDM_LAYER_CAPABILITY_VIDEO))
                _tdm_layer_dump_buffer(private_layer, buffer);
@@ -454,20 +512,18 @@ tdm_layer_set_buffer_internal(tdm_private_layer *private_layer, tbm_surface_h bu
                                 private_output->index, private_layer->index, i++);
                tdm_helper_dump_buffer_str(buffer, tdm_debug_dump_dir, str);
        }
-       /* LCOV_EXCL_STOP */
 
-       func_layer = &private_display->func_layer;
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (private_layer->usable)
-               TDM_INFO("layer(%p) not usable", private_layer);
+               TDM_INFO("layer(%p,%d) not usable", private_layer, private_layer->index);
 
        private_layer->usable = 0;
 
        if (!func_layer->layer_set_buffer) {
-               /* LCOV_EXCL_START */
                TDM_ERR("not implemented!!");
                return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_START */
        }
 
        private_layer->pending_buffer_changed = 1;
@@ -475,8 +531,8 @@ tdm_layer_set_buffer_internal(tdm_private_layer *private_layer, tbm_surface_h bu
        if (private_layer->pending_buffer) {
 
                if (tdm_debug_module & TDM_DEBUG_BUFFER)
-                       TDM_INFO("layer(%p) pending_buffer(%p) skipped",
-                                        private_layer, private_layer->pending_buffer);
+                       TDM_INFO("layer(%p,%d) pending_buffer(%p) skipped",
+                                        private_layer, private_layer->index, private_layer->pending_buffer);
 
                if (tdm_ttrace_module & TDM_TTRACE_LAYER) {
                        tbm_bo bo = tbm_surface_internal_get_bo(private_layer->pending_buffer, 0);
@@ -489,9 +545,12 @@ tdm_layer_set_buffer_internal(tdm_private_layer *private_layer, tbm_surface_h bu
        tbm_surface_internal_ref(buffer);
        private_layer->pending_buffer = buffer;
 
-       if (tdm_debug_module & TDM_DEBUG_BUFFER)
-               TDM_INFO("layer(%p) pending_buffer(%p)",
-                                private_layer, private_layer->pending_buffer);
+       if (tdm_debug_module & TDM_DEBUG_BUFFER) {
+               tbm_bo bo = tbm_surface_internal_get_bo(private_layer->pending_buffer, 0);
+               int flags = tbm_bo_get_flags(bo);
+               TDM_INFO("layer(%p,%d) pending_buffer(%p) bo_flags(%x)",
+                                private_layer, private_layer->index, private_layer->pending_buffer, flags);
+       }
 
        if (tdm_ttrace_module & TDM_TTRACE_LAYER) {
                tbm_bo bo = tbm_surface_internal_get_bo(private_layer->pending_buffer, 0);
@@ -510,6 +569,8 @@ tdm_layer_set_buffer(tdm_layer *layer, tbm_surface_h buffer)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        ret = tdm_layer_set_buffer_internal(private_layer, buffer);
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -520,25 +581,23 @@ tdm_layer_set_buffer(tdm_layer *layer, tbm_surface_h buffer)
 INTERN tdm_error
 tdm_layer_unset_buffer_internal(tdm_private_layer *private_layer)
 {
-       tdm_private_output *private_output = private_layer->private_output;
-       tdm_private_display *private_display = private_output->private_display;
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        tdm_error ret = TDM_ERROR_NONE;
 
-       func_layer = &private_display->func_layer;
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        _tdm_layer_free_all_buffers(private_layer);
 
        private_layer->usable = 1;
 
        if (private_layer->usable)
-               TDM_INFO("layer(%p) now usable", private_layer);
+               TDM_INFO("layer(%p,%d) now usable", private_layer, private_layer->index);
 
        if (!func_layer->layer_unset_buffer) {
-               /* LCOV_EXCL_START */
                TDM_ERR("not implemented!!");
                return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_START */
        }
 
        ret = func_layer->layer_unset_buffer(private_layer->layer_backend);
@@ -554,6 +613,8 @@ tdm_layer_unset_buffer(tdm_layer *layer)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        ret = tdm_layer_unset_buffer_internal(private_layer);
        TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 
@@ -568,13 +629,13 @@ tdm_layer_committed(tdm_private_layer *private_layer, tdm_private_layer_buffer *
        tdm_private_output *private_output = private_layer->private_output;
        tdm_private_display *private_display = private_output->private_display;
 
-       /* LCOV_EXCL_START */
        if (private_display->print_fps) {
                double curr = tdm_helper_get_time();
                if (private_layer->fps_stamp == 0) {
                        private_layer->fps_stamp = curr;
                } else if ((curr - private_layer->fps_stamp) > 1.0) {
-                       TDM_INFO("output(%d) layer(%d) fps: %d", private_output->index, private_layer->index, private_layer->fps_count);
+                       TDM_INFO("output(%d) layer(%p,%d) fps: %d",
+                                        private_output->index, private_layer, private_layer->index, private_layer->fps_count);
                        private_layer->fps_count = 0;
                        private_layer->fps_stamp = curr;
                } else
@@ -583,7 +644,6 @@ tdm_layer_committed(tdm_private_layer *private_layer, tdm_private_layer_buffer *
                private_layer->fps_stamp = 0;
                private_layer->fps_count = 0;
        }
-       /* LCOV_EXCL_STOP */
 
        if (private_layer->showing_buffer) {
                if (tdm_ttrace_module & TDM_TTRACE_LAYER) {
@@ -591,15 +651,15 @@ tdm_layer_committed(tdm_private_layer *private_layer, tdm_private_layer_buffer *
                        TDM_TRACE_ASYNC_END((intptr_t)private_layer, "[LAYER] %d", tbm_bo_export(bo));
                }
 
-               _tdm_layer_free_buffer(private_layer, private_layer->showing_buffer);
+               tdm_layer_free_buffer(private_layer, private_layer->showing_buffer);
        }
 
        private_layer->showing_buffer = *committed_buffer;
        *committed_buffer = NULL;
 
        if (tdm_debug_module & TDM_DEBUG_BUFFER)
-               TDM_INFO("layer(%p) committed_buffer(%p) showing_buffer(%p)",
-                                private_layer, *committed_buffer,
+               TDM_INFO("layer(%p,%d) committed_buffer(%p) showing_buffer(%p)",
+                                private_layer, private_layer->index, *committed_buffer,
                                 (private_layer->showing_buffer) ? private_layer->showing_buffer->buffer : NULL);
 }
 
@@ -633,8 +693,8 @@ _tdm_layer_got_output_vblank(tdm_private_output *private_output, unsigned int se
 
        LIST_FOR_EACH_ENTRY_SAFE(lm, lmm, &clone_list, link) {
                if (tdm_debug_module & TDM_DEBUG_COMMIT)
-                       TDM_INFO("layer(%p) committed. handle(%p) commited_buffer(%p)",
-                                        lm->private_layer, lm, (lm->committed_buffer) ? lm->committed_buffer->buffer : NULL);
+                       TDM_INFO("layer(%p,%d) committed. handle(%p) commited_buffer(%p)",
+                                        lm->private_layer, lm->private_layer->index, lm, (lm->committed_buffer) ? lm->committed_buffer->buffer : NULL);
 
                LIST_DEL(&lm->link);
                tdm_layer_committed(lm->private_layer, &lm->committed_buffer);
@@ -643,7 +703,7 @@ _tdm_layer_got_output_vblank(tdm_private_output *private_output, unsigned int se
                        lm->func(lm->private_layer, sequence, tv_sec, tv_usec, lm->user_data);
                _pthread_mutex_lock(&private_display->lock);
                if (lm->committed_buffer)
-                       _tdm_layer_free_buffer(lm->private_layer, lm->committed_buffer);
+                       tdm_layer_free_buffer(lm->private_layer, lm->committed_buffer);
                free(lm);
        }
 
@@ -697,7 +757,7 @@ wait_failed:
                if (lm->func)
                        lm->func(lm->private_layer, sequence, tv_sec, tv_usec, lm->user_data);
                _pthread_mutex_lock(&private_display->lock);
-               _tdm_layer_free_buffer(lm->private_layer, lm->committed_buffer);
+               tdm_layer_free_buffer(lm->private_layer, lm->committed_buffer);
                free(lm);
        }
 
@@ -733,9 +793,11 @@ _tdm_layer_cb_output_commit(tdm_output *output, unsigned int sequence,
 
        private_layer = layer_commit_handler->private_layer;
 
+       private_layer->committing = 0;
+
        if (tdm_debug_module & TDM_DEBUG_COMMIT)
-               TDM_INFO("layer(%p) commit: output(%d) committed. handle(%p)",
-                                private_layer, private_output->pipe, layer_commit_handler);
+               TDM_INFO("layer(%p,%d) commit: output(%d) committed. handle(%p)",
+                                private_layer, private_layer->index, private_output->pipe, layer_commit_handler);
 
        _pthread_mutex_lock(&private_display->lock);
 
@@ -743,7 +805,7 @@ _tdm_layer_cb_output_commit(tdm_output *output, unsigned int sequence,
 
        if (layer_commit_handler->func) {
                _pthread_mutex_unlock(&private_display->lock);
-               layer_commit_handler->func(private_output, sequence,
+               layer_commit_handler->func(private_layer, sequence,
                                                                   tv_sec, tv_usec, layer_commit_handler->user_data);
                _pthread_mutex_lock(&private_display->lock);
        }
@@ -775,7 +837,7 @@ _tdm_layer_cb_wait_vblank(tdm_vblank *vblank, tdm_error error, unsigned int sequ
 }
 
 static unsigned int
-_tdm_lauer_get_output_used_layer_count(tdm_private_output *private_output)
+_tdm_layer_get_output_used_layer_count(tdm_private_output *private_output)
 {
        tdm_private_layer *private_layer = NULL;
        unsigned int count = 0;
@@ -806,18 +868,20 @@ _tdm_layer_commit_possible(tdm_private_layer *private_layer)
         */
        if (!LIST_IS_EMPTY(&private_output->layer_commit_handler_list)) {
                if (tdm_debug_module & TDM_DEBUG_COMMIT)
-                       TDM_INFO("layer(%p) commit: not possible(previous commit)", private_layer);
+                       TDM_INFO("layer(%p,%d) commit: not possible(previous commit)",
+                                        private_layer, private_layer->index);
                return 0;
        }
 
-       if (private_output->commit_per_vblank == 1 && _tdm_lauer_get_output_used_layer_count(private_output) > 1) {
+       if (private_output->commit_per_vblank == 1 && _tdm_layer_get_output_used_layer_count(private_output) > 1) {
                if (tdm_debug_module & TDM_DEBUG_COMMIT)
-                       TDM_INFO("layer(%p) commit: not possible(more than 2 layers)", private_layer);
+                       TDM_INFO("layer(%p,%d) commit: not possible(more than 2 layers)",
+                                        private_layer, private_layer->index);
                return 0;
        }
 
        if (tdm_debug_module & TDM_DEBUG_COMMIT)
-               TDM_INFO("layer(%p) commit: possible", private_layer);
+               TDM_INFO("layer(%p,%d) commit: possible", private_layer, private_layer->index);
 
        return 1;
 }
@@ -838,12 +902,12 @@ _tdm_layer_reset_pending_data(tdm_private_layer *private_layer)
 INTERN tdm_error
 tdm_layer_commit_pending_data(tdm_private_layer *private_layer)
 {
-       tdm_private_output *private_output = private_layer->private_output;
-       tdm_private_display *private_display = private_output->private_display;
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        tdm_error ret = TDM_ERROR_NONE;
 
-       func_layer = &private_display->func_layer;
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (private_layer->pending_info_changed) {
                ret = func_layer->layer_set_info(private_layer->layer_backend, &private_layer->pending_info);
@@ -862,20 +926,20 @@ tdm_layer_commit_pending_data(tdm_private_layer *private_layer)
                TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
 
                if (tdm_debug_module & TDM_DEBUG_BUFFER)
-                       TDM_INFO("layer(%p) pending_buffer(%p) committed",
-                                        private_layer, private_layer->pending_buffer);
+                       TDM_INFO("layer(%p,%d) pending_buffer(%p) committed",
+                                        private_layer, private_layer->index, private_layer->pending_buffer);
 
                if (ret == TDM_ERROR_NONE) {
                        if (private_layer->waiting_buffer)
-                               _tdm_layer_free_buffer(private_layer, private_layer->waiting_buffer);
+                               tdm_layer_free_buffer(private_layer, private_layer->waiting_buffer);
 
                        private_layer->waiting_buffer = layer_buffer;
                        private_layer->waiting_buffer->buffer = tdm_buffer_ref_backend(private_layer->pending_buffer);
                        if (tdm_debug_module & TDM_DEBUG_BUFFER)
-                               TDM_INFO("layer(%p) waiting_buffer(%p)",
-                                                private_layer, private_layer->waiting_buffer->buffer);
+                               TDM_INFO("layer(%p,%d) waiting_buffer(%p)",
+                                                private_layer, private_layer->index, private_layer->waiting_buffer->buffer);
                } else
-                       _tdm_layer_free_buffer(private_layer, layer_buffer);
+                       tdm_layer_free_buffer(private_layer, layer_buffer);
        }
 
 done:
@@ -896,14 +960,12 @@ _tdm_layer_commit(tdm_layer *layer, tdm_layer_commit_handler func, void *user_da
 
        layer_commit_handler = calloc(1, sizeof(tdm_private_layer_commit_handler));
        if (!layer_commit_handler) {
-               /* LCOV_EXCL_START */
                TDM_ERR("failed: alloc memory");
                return TDM_ERROR_OUT_OF_MEMORY;
-               /* LCOV_EXCL_STOP */
        }
 
        if (tdm_debug_module & TDM_DEBUG_COMMIT)
-               TDM_INFO("layer(%p) commit: handle(%p)", private_layer, layer_commit_handler);
+               TDM_INFO("layer(%p,%d) commit: handle(%p)", private_layer, private_layer->index, layer_commit_handler);
 
        LIST_INITHEAD(&layer_commit_handler->link);
        layer_commit_handler->private_layer = private_layer;
@@ -913,9 +975,17 @@ _tdm_layer_commit(tdm_layer *layer, tdm_layer_commit_handler func, void *user_da
        layer_commit_handler->committed_buffer = private_layer->waiting_buffer;
        private_layer->waiting_buffer = NULL;
 
+       if (!private_layer->committing && layer_commit_handler->committed_buffer)
+               private_layer->commiting_buffer = layer_commit_handler->committed_buffer->buffer;
+
+       if (private_layer->committing)
+               TDM_WRN("layer(%p,%d) too many commit", private_layer, private_layer->index);
+       else
+               private_layer->committing = 1;
+
        if (tdm_debug_module & TDM_DEBUG_BUFFER)
-               TDM_INFO("layer(%p) waiting_buffer(%p) committed_buffer(%p)",
-                                private_layer, private_layer->waiting_buffer,
+               TDM_INFO("layer(%p,%d) waiting_buffer(%p) committed_buffer(%p)",
+                                private_layer, private_layer->index, private_layer->waiting_buffer,
                                 (layer_commit_handler->committed_buffer) ? layer_commit_handler->committed_buffer->buffer : NULL);
 
        if (!private_output->commit_per_vblank) {
@@ -926,29 +996,24 @@ _tdm_layer_commit(tdm_layer *layer, tdm_layer_commit_handler func, void *user_da
                TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, commit_failed);
 
                if (tdm_debug_module & TDM_DEBUG_COMMIT)
-                       TDM_INFO("layer(%p) commit: no commit-per-vblank", private_layer);
+                       TDM_INFO("layer(%p,%d) commit: no commit-per-vblank", private_layer, private_layer->index);
        } else {
                TDM_GOTO_IF_FAIL(private_output->commit_type == TDM_COMMIT_TYPE_LAYER, commit_failed);
 
-               if (private_layer->committing)
-                       TDM_WRN("layer(%d) too many commit", private_layer->index);
-               else
-                       private_layer->committing = 1;
-
                if (_tdm_layer_commit_possible(private_layer)) {
                        /* add to layer_commit_handler_list */
                        LIST_ADDTAIL(&layer_commit_handler->link, &private_output->layer_commit_handler_list);
-                       ret = tdm_output_commit_internal(private_layer->private_output, 0, NULL, NULL);
+                       ret = tdm_output_commit_internal(private_layer->private_output, 0, _tdm_layer_cb_output_commit, layer_commit_handler);
                        TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, commit_failed);
 
                        if (tdm_debug_module & TDM_DEBUG_COMMIT)
-                               TDM_INFO("layer(%p) commit: output", private_layer);
+                               TDM_INFO("layer(%p,%d) commit: output", private_layer, private_layer->index);
                } else {
                        /* add to pending_commit_handler_list. It will be commited when a vblank occurs */
                        LIST_ADDTAIL(&layer_commit_handler->link, &private_output->pending_commit_handler_list);
 
                        if (tdm_debug_module & TDM_DEBUG_COMMIT)
-                               TDM_INFO("layer(%p) commit: pending", private_layer);
+                               TDM_INFO("layer(%p,%d) commit: pending", private_layer, private_layer->index);
                }
 
                if (!private_output->vblank) {
@@ -964,11 +1029,18 @@ _tdm_layer_commit(tdm_layer *layer, tdm_layer_commit_handler func, void *user_da
                        _pthread_mutex_unlock(&private_display->lock);
                        ret = tdm_vblank_wait(private_output->vblank, 0, 0, 1, _tdm_layer_cb_wait_vblank, private_output);
                        _pthread_mutex_lock(&private_display->lock);
-                       TDM_GOTO_IF_FAIL(ret == TDM_ERROR_NONE, commit_failed);
+                       if (ret != TDM_ERROR_NONE) {
+                               if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(private_output->current_dpms_value)) {
+                                       /* dpms off : the allocated memory was free in tdm_output_commit_internal */
+                                       return ret;
+                               }
+                               goto commit_failed;
+
+                       }
                        private_output->layer_waiting_vblank = 1;
 
                        if (tdm_debug_module & TDM_DEBUG_COMMIT)
-                               TDM_INFO("layer(%p) commit: wait vblank", private_layer);
+                               TDM_INFO("layer(%p,%d) commit: wait vblank", private_layer, private_layer->index);
                }
        }
 
@@ -997,7 +1069,7 @@ tdm_layer_commit_internal(tdm_private_layer *private_layer, tdm_layer_commit_han
        }
 
        if (TDM_OUTPUT_DPMS_VSYNC_IS_OFF(private_output->current_dpms_value)) {
-               TDM_ERR("layer(%p)'s output(%d) dpms: %s", private_layer, private_output->pipe,
+               TDM_ERR("layer(%p,%d)'s output(%d) dpms: %s", private_layer, private_layer->index, private_output->pipe,
                                tdm_dpms_str(private_output->current_dpms_value));
                return TDM_ERROR_DPMS_OFF;
        }
@@ -1005,7 +1077,7 @@ tdm_layer_commit_internal(tdm_private_layer *private_layer, tdm_layer_commit_han
        /* don't call this inside of _tdm_layer_commit */
        ret = tdm_layer_commit_pending_data(private_layer);
        if (ret != TDM_ERROR_NONE) {
-               TDM_ERR("layer(%p) committing pending data failed", private_layer);
+               TDM_ERR("layer(%p,%d) committing pending data failed", private_layer, private_layer->index);
                return ret;
        }
 
@@ -1021,6 +1093,8 @@ tdm_layer_commit(tdm_layer *layer, tdm_layer_commit_handler func, void *user_dat
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        ret = tdm_layer_commit_internal(private_layer, func, user_data);
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -1037,6 +1111,8 @@ tdm_layer_is_committing(tdm_layer *layer, unsigned int *committing)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        *committing = private_layer->committing;
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -1051,6 +1127,9 @@ tdm_layer_remove_commit_handler_internal(tdm_layer *layer, tdm_layer_commit_hand
        tdm_private_output *private_output = private_layer->private_output;
        tdm_private_layer_commit_handler *lm = NULL, *lmm = NULL;
 
+       if (!func && !user_data)
+               return;
+
        TDM_RETURN_IF_FAIL(private_layer != NULL);
        TDM_RETURN_IF_FAIL(TDM_MUTEX_IS_LOCKED());
 
@@ -1058,7 +1137,7 @@ tdm_layer_remove_commit_handler_internal(tdm_layer *layer, tdm_layer_commit_hand
                if (lm->func == func && lm->user_data == user_data) {
                        LIST_DEL(&lm->link);
                        tdm_output_remove_commit_handler_internal(private_output, _tdm_layer_cb_output_commit, lm);
-                       _tdm_layer_free_buffer(private_layer, lm->committed_buffer);
+                       tdm_layer_free_buffer(private_layer, lm->committed_buffer);
                        free(lm);
                        break;
                }
@@ -1068,7 +1147,7 @@ tdm_layer_remove_commit_handler_internal(tdm_layer *layer, tdm_layer_commit_hand
                if (lm->func == func && lm->user_data == user_data) {
                        LIST_DEL(&lm->link);
                        tdm_output_remove_commit_handler_internal(private_output, _tdm_layer_cb_output_commit, lm);
-                       _tdm_layer_free_buffer(private_layer, lm->committed_buffer);
+                       tdm_layer_free_buffer(private_layer, lm->committed_buffer);
                        free(lm);
                        break;
                }
@@ -1082,6 +1161,8 @@ tdm_layer_remove_commit_handler(tdm_layer *layer, tdm_layer_commit_handler func,
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        tdm_layer_remove_commit_handler_internal(layer, func, user_data);
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -1097,16 +1178,16 @@ tdm_layer_get_displaying_buffer(tdm_layer *layer, tdm_error *error)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK_ERROR();
+
        if (error)
                *error = TDM_ERROR_NONE;
 
        if (private_layer->showing_buffer) {
                buffer = private_layer->showing_buffer->buffer;
        } else {
-               if (error)
-                       *error = TDM_ERROR_OPERATION_FAILED;
                _pthread_mutex_unlock(&private_display->lock);
-               TDM_DBG("layer(%p) showing_buffer is null", private_layer);
+               TDM_DBG("layer(%p,%d) showing_buffer is null", private_layer, private_layer->index);
                return NULL;
        }
        _pthread_mutex_unlock(&private_display->lock);
@@ -1119,74 +1200,42 @@ _tbm_layer_queue_acquirable_cb(tbm_surface_queue_h surface_queue, void *data)
 {
        TDM_RETURN_IF_FAIL(data != NULL);
        tdm_layer *layer = data;
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
-       tbm_surface_h surface = NULL;
-       tdm_private_layer_buffer *layer_buffer;
+       tbm_surface_h buffer = NULL;
        LAYER_FUNC_ENTRY_VOID_RETURN();
 
        _pthread_mutex_lock(&private_display->lock);
 
-       func_layer = &private_display->func_layer;
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
+
        if (!func_layer->layer_set_buffer) {
-               /* LCOV_EXCL_START */
                _pthread_mutex_unlock(&private_display->lock);
                return;
-               /* LCOV_EXCL_STOP */
        }
 
-       layer_buffer = calloc(1, sizeof(tdm_private_layer_buffer));
-       if (!layer_buffer) {
-               /* LCOV_EXCL_START */
+       if (TBM_SURFACE_QUEUE_ERROR_NONE != tbm_surface_queue_acquire(private_layer->buffer_queue, &buffer) ||
+               buffer == NULL) {
+               TDM_ERR("layer(%p,%d) tbm_surface_queue_acquire() failed surface:%p",
+                               private_layer, private_layer->index, buffer);
                _pthread_mutex_unlock(&private_display->lock);
-               TDM_ERR("alloc failed");
                return;
-               /* LCOV_EXCL_STOP */
        }
-       LIST_INITHEAD(&layer_buffer->link);
 
-       if (TBM_SURFACE_QUEUE_ERROR_NONE != tbm_surface_queue_acquire(private_layer->buffer_queue, &surface) ||
-               surface == NULL) {
-               /* LCOV_EXCL_START */
-               TDM_ERR("layer(%p) tbm_surface_queue_acquire() failed surface:%p",
-                               private_layer, surface);
+       ret = tdm_layer_set_buffer_internal(private_layer, buffer);
+       if (ret != TDM_ERROR_NONE) {
+               TDM_ERR("tdm_layer_set_buffer_internal failed");
                _pthread_mutex_unlock(&private_display->lock);
-               free(layer_buffer);
                return;
-               /* LCOV_EXCL_STOP */
        }
 
-       /* we don't need to handle pending data here because the changes in this function
-        * should be applied immediately. we can't expect calling tdm_layer_commit.
-        */
-       ret = func_layer->layer_set_buffer(private_layer->layer_backend, surface);
-       TDM_WARNING_IF_FAIL(ret == TDM_ERROR_NONE);
-
-       if (ret == TDM_ERROR_NONE) {
-               if (private_layer->waiting_buffer) {
-                       TDM_DBG("layer(%p) drop waiting_buffer(%p)", private_layer, private_layer->waiting_buffer->buffer);
-                       _tdm_layer_free_buffer(private_layer, private_layer->waiting_buffer);
-               }
-
-               private_layer->waiting_buffer = layer_buffer;
-               private_layer->waiting_buffer->buffer = tdm_buffer_ref_backend(surface);
-
-               if (tdm_debug_module & TDM_DEBUG_BUFFER)
-                       TDM_INFO("layer(%p) waiting_buffer(%p)",
-                                        private_layer, private_layer->waiting_buffer->buffer);
-
-               if (private_output->commit_type == TDM_COMMIT_TYPE_OUTPUT) {
-                       ret = tdm_output_commit_internal(private_layer->private_output, 0, NULL, NULL);
-                       if (ret != TDM_ERROR_NONE)
-                               TDM_ERR("tdm_output_commit_internal() is fail");
-               } else if (private_output->commit_type == TDM_COMMIT_TYPE_LAYER) {
-                       ret = _tdm_layer_commit(private_layer, NULL, NULL);
-                       if (ret != TDM_ERROR_NONE)
-                               TDM_ERR("layer(%p) _tdm_layer_commit() is fail", private_layer);
-               } else {
-                       TDM_NEVER_GET_HERE();
-               }
-       } else
-               _tdm_layer_free_buffer(private_layer, layer_buffer);
+       ret = tdm_layer_commit_internal(private_layer, NULL, NULL);
+       if (ret != TDM_ERROR_NONE) {
+               TDM_ERR("tdm_layer_commit_internal failed");
+               _pthread_mutex_unlock(&private_display->lock);
+               return;
+       }
 
        _pthread_mutex_unlock(&private_display->lock);
 }
@@ -1211,6 +1260,7 @@ _tbm_layer_queue_destroy_cb(tbm_surface_queue_h surface_queue, void *data)
 EXTERN tdm_error
 tdm_layer_set_buffer_queue(tdm_layer *layer, tbm_surface_queue_h buffer_queue)
 {
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        LAYER_FUNC_ENTRY();
 
@@ -1218,19 +1268,20 @@ tdm_layer_set_buffer_queue(tdm_layer *layer, tbm_surface_queue_h buffer_queue)
 
        _pthread_mutex_lock(&private_display->lock);
 
-       func_layer = &private_display->func_layer;
+       OUTPUT_HWC_CAP_CHECK();
+
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (private_layer->usable)
-               TDM_INFO("layer(%p) not usable", private_layer);
+               TDM_INFO("layer(%p,%d) not usable", private_layer, private_layer->index);
 
        private_layer->usable = 0;
 
        if (!func_layer->layer_set_buffer) {
-               /* LCOV_EXCL_START */
                _pthread_mutex_unlock(&private_display->lock);
                TDM_ERR("not implemented!!");
                return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_STOP */
        }
 
        if (buffer_queue == private_layer->buffer_queue) {
@@ -1239,12 +1290,12 @@ tdm_layer_set_buffer_queue(tdm_layer *layer, tbm_surface_queue_h buffer_queue)
        }
 
        if (private_layer->waiting_buffer) {
-               _tdm_layer_free_buffer(private_layer, private_layer->waiting_buffer);
+               tdm_layer_free_buffer(private_layer, private_layer->waiting_buffer);
                private_layer->waiting_buffer = NULL;
 
                if (tdm_debug_module & TDM_DEBUG_BUFFER)
-                       TDM_INFO("layer(%p) waiting_buffer(%p)",
-                                        private_layer, private_layer->waiting_buffer);
+                       TDM_INFO("layer(%p,%d) waiting_buffer(%p)",
+                                        private_layer, private_layer->index, private_layer->waiting_buffer);
        }
 
        private_layer->buffer_queue = buffer_queue;
@@ -1274,6 +1325,8 @@ tdm_layer_is_usable(tdm_layer *layer, unsigned int *usable)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK();
+
        *usable = private_layer->usable;
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -1284,25 +1337,27 @@ tdm_layer_is_usable(tdm_layer *layer, unsigned int *usable)
 EXTERN tdm_error
 tdm_layer_set_video_pos(tdm_layer *layer, int zpos)
 {
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        LAYER_FUNC_ENTRY();
 
        _pthread_mutex_lock(&private_display->lock);
 
-       func_layer = &private_display->func_layer;
+       OUTPUT_HWC_CAP_CHECK();
+
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (!(private_layer->caps.capabilities & TDM_LAYER_CAPABILITY_VIDEO)) {
-               TDM_ERR("layer(%p) is not video layer", private_layer);
+               TDM_ERR("layer(%p,%d) is not video layer", private_layer, private_layer->index);
                _pthread_mutex_unlock(&private_display->lock);
-               return TDM_ERROR_INVALID_PARAMETER;
+               return TDM_ERROR_BAD_REQUEST;
        }
 
        if (!func_layer->layer_set_video_pos) {
-               /* LCOV_EXCL_START */
                _pthread_mutex_unlock(&private_display->lock);
-               TDM_ERR("not implemented!!");
+               TDM_ERR("layer(%p,%d) not implemented!!", private_layer, private_layer->index);
                return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_STOP */
        }
 
        ret = func_layer->layer_set_video_pos(private_layer->layer_backend, zpos);
@@ -1321,6 +1376,8 @@ tdm_layer_create_capture(tdm_layer *layer, tdm_error *error)
 
        _pthread_mutex_lock(&private_display->lock);
 
+       OUTPUT_HWC_CAP_CHECK_ERROR();
+
        capture = (tdm_capture *)tdm_capture_create_layer_internal(private_layer, error);
 
        _pthread_mutex_unlock(&private_display->lock);
@@ -1331,20 +1388,23 @@ tdm_layer_create_capture(tdm_layer *layer, tdm_error *error)
 EXTERN tdm_error
 tdm_layer_get_buffer_flags(tdm_layer *layer, unsigned int *flags)
 {
+       tdm_private_module *private_module;
        tdm_func_layer *func_layer;
        LAYER_FUNC_ENTRY();
        TDM_RETURN_VAL_IF_FAIL(flags != NULL, TDM_ERROR_INVALID_PARAMETER);
 
        _pthread_mutex_lock(&private_display->lock);
 
-       func_layer = &private_display->func_layer;
+       OUTPUT_HWC_CAP_CHECK();
+
+       private_module = private_layer->private_module;
+       func_layer = &private_module->func_layer;
 
        if (!func_layer->layer_get_buffer_flags) {
-               /* LCOV_EXCL_START */
+               *flags = 0;
                _pthread_mutex_unlock(&private_display->lock);
-               TDM_ERR("not implemented!!");
-               return TDM_ERROR_NOT_IMPLEMENTED;
-               /* LCOV_EXCL_STOP */
+               TDM_INFO("not implemented!!");
+               return TDM_ERROR_NONE;
        }
 
        ret = func_layer->layer_get_buffer_flags(private_layer->layer_backend, flags);
@@ -1353,3 +1413,4 @@ tdm_layer_get_buffer_flags(tdm_layer *layer, unsigned int *flags)
 
        return ret;
 }
+/* LCOV_EXCL_STOP */