msm: vidc: Add LTR feature for H264 encoder

This change adds Long Term Reference picture
selection feature for H264 video encoder.

Change-Id: I7b9ba82d25a249e5663f25d6f7c81e5f1aefc071
Signed-off-by: Maheshwar Ajja <majja@codeaurora.org>
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl.c b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl.c
index a82feb9..f8c26ff 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl.c
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl.c
@@ -280,6 +280,25 @@
 		return VCD_ERR_ILLEGAL_OP;
 	}
 	encoder = &ddl->codec_data.encoder;
+	if (DDL_IS_LTR_ENABLED(encoder)) {
+		DDL_MSG_HIGH("LTR enabled, mode %u count %u",
+			(u32)encoder->ltr_control.ltrmode.ltr_mode,
+			(u32)encoder->ltr_control.ltr_count);
+		status = ddl_allocate_ltr_list(&encoder->ltr_control);
+		if (status) {
+			DDL_MSG_ERROR("%s: allocate ltr list failed",
+				__func__);
+			return status;
+		} else {
+			ddl_clear_ltr_list(&encoder->ltr_control, false);
+		}
+		encoder->num_references_for_p_frame = 2;
+		encoder->ltr_control.callback_reqd = false;
+		encoder->ltr_control.curr_ltr_id = (u32)DDL_LTR_FRAME_START_ID;
+		DDL_MSG_HIGH("num_ref_for_p_frames %u, curr_ltr_id = %u",
+			(u32)encoder->num_references_for_p_frame,
+			(u32)encoder->ltr_control.curr_ltr_id);
+	}
 	status = ddl_allocate_enc_hw_buffers(ddl);
 	if (status)
 		return status;
@@ -393,7 +412,7 @@
 		(struct ddl_client_context *) ddl_handle;
 	struct ddl_context *ddl_context;
 	struct ddl_decoder_data *decoder;
-	DDL_MSG_HIGH("ddl_decode_frame");
+	DDL_MSG_MED("ddl_decode_frame");
 	ddl_context = ddl_get_context();
 	if (!DDL_IS_INITIALIZED(ddl_context)) {
 		DDL_MSG_ERROR("ddl_dec_frame:Not_inited");
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl.h b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl.h
index 8836b33..0404e82 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl.h
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl.h
@@ -52,6 +52,19 @@
 #define DDLCLIENT_STATE_IS(ddl, state) \
 	(state == (ddl)->client_state)
 
+#define DDL_IS_LTR_ENABLED(encoder) \
+	((encoder->ltr_control.ltrmode.ltr_mode == \
+		VCD_LTR_MODE_AUTO || \
+	encoder->ltr_control.ltrmode.ltr_mode == \
+		VCD_LTR_MODE_MANUAL) && \
+	(encoder->ltr_control.ltr_count > 0))
+
+#define DDL_IS_LTR_IN_AUTO_MODE(encoder) \
+	((encoder->ltr_control.ltrmode.ltr_mode == \
+		VCD_LTR_MODE_AUTO) && \
+	(encoder->ltr_control.ltr_count > 0) && \
+	(encoder->ltr_control.ltr_period > 0))
+
 #define DDL_DPB_OP_INIT       1
 #define DDL_DPB_OP_MARK_FREE  2
 #define DDL_DPB_OP_MARK_BUSY  3
@@ -72,6 +85,7 @@
 #define DDL_ENC_CHANGE_BITRATE    0x04
 #define DDL_ENC_CHANGE_FRAMERATE  0x08
 #define DDL_ENC_CHANGE_CIR        0x10
+#define DDL_ENC_LTR_USE_FRAME     0x20
 
 #define DDL_DEC_REQ_OUTPUT_FLUSH  0x1
 
@@ -86,6 +100,9 @@
 
 #define MDP_MIN_TILE_HEIGHT			96
 
+#define DDL_MAX_NUM_LTR_FRAMES                  2
+#define DDL_LTR_FRAME_START_ID                  1
+
 enum ddl_mem_area {
 	DDL_FW_MEM	= 0x0,
 	DDL_MM_MEM	= 0x1,
@@ -242,6 +259,43 @@
 	u32 seqdisp_extdump_enable;
 	u32 seq_extdump_enable;
 };
+
+
+struct ddl_ltrlist {
+	bool ltr_in_use;
+	u32 ltr_id;
+};
+
+struct ddl_ltr_encoding_type {
+	struct vcd_property_ltrmode_type  ltrmode;
+	struct vcd_property_ltruse_type  failed_use_cmd;
+	struct ddl_ltrlist *ltr_list;
+	u32 ltr_count;
+	u32 ltr_period;
+	u32 ltr_use_frames;
+	u32 curr_ltr_id;
+	u32 storing_idx;
+	u32 out_frame_cnt_to_use_this_ltr;
+	u32 out_frame_cnt_before_next_idr;
+	bool storing;
+	bool callback_reqd;
+	bool meta_data_reqd;
+	bool using;
+	bool first_ltr_use_arvd;
+	bool use_ltr_reqd;
+	bool store_for_intraframe_insertion;
+	bool pending_chg_ltr_useframes; /* True if
+		 * corresponding driver context of
+		 * out_frame_cnt_to_use_this_ltr
+		 * is pending to be changed with
+		 * client settings
+		 */
+	bool store_ltr0;
+	bool store_ltr1;
+	bool use_ltr0;
+	bool use_ltr1;
+};
+
 struct ddl_encoder_data{
 	struct ddl_codec_data_hdr   hdr;
 	struct vcd_property_codec   codec;
@@ -275,6 +329,7 @@
 	struct ddl_enc_buffers  hw_bufs;
 	struct ddl_yuv_buffer_size  input_buf_size;
 	struct vidc_1080p_enc_frame_info enc_frame_info;
+	struct ddl_ltr_encoding_type  ltr_control;
 	u32  plusptype_enable;
 	u32  meta_data_enable_flag;
 	u32  suffix;
@@ -291,6 +346,7 @@
 	u32  num_references_for_p_frame;
 	u32  closed_gop;
 	u32  num_slices_comp;
+	bool  intra_period_changed;
 	struct vcd_property_slice_delivery_info slice_delivery_info;
 	struct ddl_batch_frame_data batch_frame;
 	u32 avc_delimiter_enable;
@@ -496,7 +552,7 @@
 #ifdef DDL_BUF_LOG
 void ddl_list_buffers(struct ddl_client_context *ddl);
 #endif
-#ifdef DDL_MSG_LOG
+#if DDL_MSG_LOG
 s8 *ddl_get_state_string(enum ddl_client_state client_state);
 #endif
 extern unsigned char *vidc_video_codec_fw;
@@ -510,4 +566,21 @@
 void ddl_vidc_decode_reset_avg_time(struct ddl_client_context *ddl);
 void ddl_calc_core_proc_time(const char *func_name, u32 index,
 		struct ddl_client_context *ddl);
+s32 ddl_encoder_ltr_control(struct ddl_client_context *ddl);
+void ddl_encoder_use_ltr_fail_callback(
+	struct ddl_client_context *ddl);
+void ddl_handle_ltr_in_framedone(struct ddl_client_context *ddl);
+s32 ddl_clear_ltr_list(struct ddl_ltr_encoding_type *ltr_control,
+	bool only_use_flag);
+s32 ddl_find_oldest_ltr_not_in_use(
+	struct ddl_ltr_encoding_type *ltr_control);
+s32 ddl_find_ltr_in_use(struct ddl_ltr_encoding_type *ltr_control);
+s32 ddl_find_ltr_from_list(struct ddl_ltr_encoding_type *ltr_control,
+	u32 ltr_id);
+s32 ddl_use_ltr_from_list(struct ddl_ltr_encoding_type *ltr_control,
+	u32 ltr_idx);
+s32 ddl_allocate_ltr_list(struct ddl_ltr_encoding_type *ltr_control);
+s32 ddl_free_ltr_list(struct ddl_ltr_encoding_type *ltr_control);
+void ddl_print_ltr_list(struct ddl_ltr_encoding_type *ltr_control);
+
 #endif
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_core.h b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_core.h
index db8a777..ddfd7e8 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_core.h
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_core.h
@@ -154,4 +154,10 @@
 #define VIDC_SM_ERR_CONCEALMENT_INTER_SLICE_MB_COPY		2
 #define VIDC_SM_ERR_CONCEALMENT_INTRA_SLICE_COLOR_CONCEALMENT	1
 
+#define DDL_MAX_P_FRAMES_IN_INTRA_INTERVAL      0xffff
+
+#define DDL_SATURATE_P_FRAMES_IN_INTRA_INTERVAL(p_rames) \
+	(((p_rames) > (DDL_MAX_P_FRAMES_IN_INTRA_INTERVAL - 1)) ? \
+	(DDL_MAX_P_FRAMES_IN_INTRA_INTERVAL) : (p_rames))
+
 #endif
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_helper.c b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_helper.c
index 1782fd2..15b37a1b 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_helper.c
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_helper.c
@@ -22,7 +22,7 @@
 	return &ddl_context;
 }
 
-#ifdef DDL_MSG_LOG
+#if DDL_MSG_LOG
 s8 *ddl_get_state_string(enum ddl_client_state client_state)
 {
 	s8 *ptr;
@@ -265,7 +265,7 @@
 	luma_size = ddl_get_yuv_buf_size(decoder->frame_size.width,
 			decoder->frame_size.height, DDL_YUV_BUF_TYPE_TILE);
 	dpb = decoder->dp_buf.no_of_dec_pic_buf;
-	DDL_MSG_LOW("%s Decoder num DPB buffers = %u Luma Size = %u"
+	DDL_MSG_LOW("%s Decoder num DPB buffers = %u Luma Size = %u",
 				 __func__, dpb, luma_size);
 	if (dpb > DDL_MAX_BUFFER_COUNT)
 		dpb = DDL_MAX_BUFFER_COUNT;
@@ -298,7 +298,7 @@
 		luma[i] = DDL_OFFSET(ddl_context->dram_base_a.
 			align_physical_addr, frame[i].vcd_frm.physical);
 		chroma[i] = luma[i] + luma_size;
-		DDL_MSG_LOW("%s Decoder Luma address = %x Chroma address = %x"
+		DDL_MSG_LOW("%s Decoder Luma address = %x Chroma address = %x",
 					__func__, luma[i], chroma[i]);
 	}
 	switch (decoder->codec.codec) {
@@ -403,6 +403,7 @@
 		ddl_vidc_encode_dynamic_property(ddl, false);
 		encoder->dynamic_prop_change = 0;
 		ddl_free_enc_hw_buffers(ddl);
+		ddl_free_ltr_list(&encoder->ltr_control);
 	}
 	ddl_pmem_free(&ddl->shared_mem[0]);
 	ddl_pmem_free(&ddl->shared_mem[1]);
@@ -999,7 +1000,7 @@
 	u32 luma_size, i, dpb;
 	luma_size = decoder->dpb_buf_size.size_y;
 	dpb = decoder->dp_buf.no_of_dec_pic_buf;
-	DDL_MSG_HIGH("%s Decoder num DPB buffers = %u Luma Size = %u"
+	DDL_MSG_HIGH("%s Decoder num DPB buffers = %u Luma Size = %u",
 			 __func__, dpb, luma_size);
 	if (dpb > DDL_MAX_BUFFER_COUNT)
 		dpb = DDL_MAX_BUFFER_COUNT;
@@ -1137,8 +1138,295 @@
 				vidc_time_out = temp;
 		}
 	}
-	DDL_MSG_HIGH("%s Video core time out value = 0x%x",
+	DDL_MSG_LOW("%s Video core time out value = 0x%x",
 		 __func__, vidc_time_out);
 	vidc_sm_set_video_core_timeout_value(
 		&ddl->shared_mem[ddl->command_channel], vidc_time_out);
 }
+
+void ddl_handle_ltr_in_framedone(struct ddl_client_context *ddl)
+{
+	struct ddl_ltr_encoding_type *ltr_control =
+		&ddl->codec_data.encoder.ltr_control;
+	DDL_MSG_LOW("%s:", __func__);
+	if (ltr_control->storing) {
+		ltr_control->ltr_list[ltr_control->storing_idx].ltr_id =
+			ltr_control->curr_ltr_id;
+		DDL_MSG_MED("Encoder output stores LTR ID %d into entry %d",
+			ltr_control->curr_ltr_id, ltr_control->storing_idx);
+		ltr_control->meta_data_reqd = true;
+		ltr_control->storing = false;
+	}
+	ltr_control->out_frame_cnt_before_next_idr++;
+	if (ltr_control->out_frame_cnt_to_use_this_ltr) {
+		ltr_control->out_frame_cnt_to_use_this_ltr--;
+		if (!ltr_control->out_frame_cnt_to_use_this_ltr)
+			ddl_clear_ltr_list(ltr_control, true);
+	}
+}
+
+s32 ddl_encoder_ltr_control(struct ddl_client_context *ddl)
+{
+	s32 vcd_status = VCD_S_SUCCESS;
+	struct ddl_encoder_data *encoder = &ddl->codec_data.encoder;
+	struct ddl_ltr_encoding_type *ltr_ctrl = &encoder->ltr_control;
+	bool intra_period_reached = false;
+
+	DDL_MSG_LOW("%s:", __func__);
+	ddl_print_ltr_list(ltr_ctrl);
+
+	if (DDL_IS_LTR_IN_AUTO_MODE(encoder)) {
+		bool finite_i_period, infinite_i_period;
+		DDL_MSG_LOW("%s: before LTR encoding: output "\
+			"count before next IDR %d", __func__,
+			ltr_ctrl->out_frame_cnt_before_next_idr);
+		finite_i_period =
+			(DDL_MAX_P_FRAMES_IN_INTRA_INTERVAL !=
+			encoder->i_period.p_frames) &&
+			(!(ltr_ctrl->out_frame_cnt_before_next_idr %
+			(encoder->i_period.p_frames + 1)));
+		infinite_i_period =
+			((DDL_MAX_P_FRAMES_IN_INTRA_INTERVAL ==
+			encoder->i_period.p_frames) &&
+			(!ltr_ctrl->out_frame_cnt_before_next_idr));
+		if (finite_i_period || infinite_i_period) {
+			DDL_MSG_HIGH("%s: Intra period reached. "\
+			"finite_i_period (%u), infinite_i_period (%u)",
+			__func__, (u32)finite_i_period,
+			(u32)infinite_i_period);
+			intra_period_reached = true;
+		}
+		if (intra_period_reached ||
+			ltr_ctrl->store_for_intraframe_insertion ||
+			encoder->intra_period_changed) {
+			ddl_clear_ltr_list(ltr_ctrl, false);
+			ltr_ctrl->out_frame_cnt_before_next_idr = 0;
+			ltr_ctrl->first_ltr_use_arvd = false;
+			ltr_ctrl->store_for_intraframe_insertion = false;
+		} else {
+			if (ltr_ctrl->first_ltr_use_arvd == false) {
+				ddl_use_ltr_from_list(ltr_ctrl, 0);
+				ltr_ctrl->out_frame_cnt_to_use_this_ltr =
+					0xFFFFFFFF;
+				ltr_ctrl->use_ltr_reqd = true;
+			}
+		}
+		if (!(ltr_ctrl->out_frame_cnt_before_next_idr %
+			ltr_ctrl->ltr_period)) {
+			s32 idx;
+			DDL_MSG_HIGH("%s: reached LTR period "\
+				"out_frame_cnt_before_next_idr %d",
+				__func__, ltr_ctrl->\
+				out_frame_cnt_before_next_idr);
+			idx = ddl_find_oldest_ltr_not_in_use(
+					ltr_ctrl);
+			if (idx >= 0) {
+				ltr_ctrl->storing = true;
+				ltr_ctrl->storing_idx = idx;
+				if (idx == 0)
+					ltr_ctrl->store_ltr0 = true;
+				else if (idx == 1)
+					ltr_ctrl->store_ltr1 = true;
+			}
+		}
+	}
+	if (encoder->intra_frame_insertion) {
+		DDL_MSG_HIGH("%s: I-frame insertion requested, "\
+			"delay LTR store for one frame", __func__);
+		ltr_ctrl->store_for_intraframe_insertion = true;
+	}
+	if (ltr_ctrl->pending_chg_ltr_useframes) {
+		ltr_ctrl->out_frame_cnt_to_use_this_ltr =
+			ltr_ctrl->ltr_use_frames;
+		ltr_ctrl->pending_chg_ltr_useframes = false;
+	}
+	if (ltr_ctrl->out_frame_cnt_to_use_this_ltr)
+		ltr_ctrl->use_ltr_reqd = true;
+	if (ltr_ctrl->use_ltr_reqd) {
+		s32 idx;
+		idx = ddl_find_ltr_in_use(ltr_ctrl);
+		if (idx == 0)
+			ltr_ctrl->use_ltr0 = true;
+		else if (idx == 1)
+			ltr_ctrl->use_ltr1 = true;
+		ltr_ctrl->using = true;
+		ltr_ctrl->use_ltr_reqd = false;
+	} else {
+		DDL_MSG_HIGH("%s: use_ltr_reqd skipped", __func__);
+	}
+
+	return vcd_status;
+}
+
+
+s32 ddl_allocate_ltr_list(struct ddl_ltr_encoding_type *ltr_control)
+{
+	s32 vcd_status = VCD_S_SUCCESS;
+
+	DDL_MSG_LOW("%s: lrr_cout = %u", __func__, ltr_control->ltr_count);
+	if (!ltr_control->ltr_list) {
+		if (ltr_control->ltr_count) {
+			ltr_control->ltr_list = (struct ddl_ltrlist *)
+				kmalloc(sizeof(struct ddl_ltrlist)*
+					ltr_control->ltr_count, GFP_KERNEL);
+			if (!ltr_control->ltr_list) {
+				DDL_MSG_ERROR("ddl_allocate_ltr_list failed");
+				vcd_status = VCD_ERR_ALLOC_FAIL;
+			}
+		} else {
+			DDL_MSG_ERROR("%s: failed, zero LTR count", __func__);
+			vcd_status = VCD_ERR_FAIL;
+		}
+	} else {
+		DDL_MSG_HIGH("WARN: ltr_list already allocated");
+	}
+
+	return vcd_status;
+}
+
+s32 ddl_free_ltr_list(struct ddl_ltr_encoding_type *ltr_control)
+{
+	s32 vcd_status = VCD_S_SUCCESS;
+
+	DDL_MSG_LOW("%s:", __func__);
+	kfree(ltr_control->ltr_list);
+	ltr_control->ltr_list = NULL;
+
+	return vcd_status;
+}
+
+s32 ddl_clear_ltr_list(struct ddl_ltr_encoding_type *ltr_control,
+	bool only_use_flag)
+{
+	s32 vcd_status = VCD_S_SUCCESS;
+	u32 i;
+
+	DDL_MSG_LOW("%s:", __func__);
+	for (i = 0; i < ltr_control->ltr_count; i++) {
+		ltr_control->ltr_list[i].ltr_in_use = false;
+		if (!only_use_flag)
+			ltr_control->ltr_list[i].ltr_id = 0;
+	}
+
+	return vcd_status;
+}
+
+s32 ddl_find_oldest_ltr_not_in_use(struct ddl_ltr_encoding_type *ltr_control)
+{
+	s32 found_idx = -1;
+	u32 i;
+
+	if (ltr_control->ltr_list) {
+		if (ltr_control->ltr_count == 1)
+			found_idx = 0;
+		else {
+			for (i = 0; i < ltr_control->ltr_count; i++) {
+				if ((ltr_control->ltr_list[i].ltr_in_use ==
+					false) && (found_idx < 0)) {
+					found_idx = i;
+				}
+				if ((found_idx >= 0) &&
+					(ltr_control->ltr_list[i].\
+					ltr_in_use == false) &&
+					(ltr_control->ltr_list[i].ltr_id <
+					ltr_control->ltr_list[found_idx].\
+					ltr_id)) {
+					found_idx = i;
+				}
+			}
+		}
+	}
+
+	DDL_MSG_LOW("%s: found_idx = %d", __func__, found_idx);
+	return found_idx;
+}
+
+s32 ddl_find_ltr_in_use(struct ddl_ltr_encoding_type *ltr_control)
+{
+	s32 found_idx = -1;
+	u32 i;
+
+	if (ltr_control->ltr_list) {
+		for (i = 0; i < ltr_control->ltr_count; i++) {
+			if (ltr_control->ltr_list[i].ltr_in_use == true)
+				found_idx = i;
+		}
+	}
+
+	DDL_MSG_LOW("%s: found_idx = %d", __func__, found_idx);
+	return found_idx;
+}
+
+s32 ddl_find_ltr_from_list(struct ddl_ltr_encoding_type *ltr_control,
+	u32 ltr_id)
+{
+	s32 found_idx = -1;
+	u32 i;
+
+	if (ltr_control->ltr_list) {
+		for (i = 0; i < ltr_control->ltr_count; i++) {
+			if (ltr_control->ltr_list[i].ltr_id == ltr_id) {
+				found_idx = i;
+				break;
+			}
+		}
+	} else {
+		DDL_MSG_ERROR("%s: ltr_list is NULL", __func__);
+	}
+
+	DDL_MSG_LOW("%s: found_idx = %d", __func__, found_idx);
+	return found_idx;
+}
+
+s32 ddl_use_ltr_from_list(struct ddl_ltr_encoding_type *ltr_control,
+	u32 ltr_idx)
+{
+	s32 vcd_status = VCD_S_SUCCESS;
+	u32 i;
+
+	DDL_MSG_LOW("%s: ltr_idx = %u", __func__, ltr_idx);
+	if (ltr_idx > ltr_control->ltr_count) {
+		DDL_MSG_ERROR("%s: fail, idx %d larger than "\
+			"the list array count %d", __func__,
+			ltr_idx, ltr_control->ltr_count);
+		vcd_status = VCD_ERR_FAIL;
+	} else {
+		for (i = 0; i < ltr_control->ltr_count; i++) {
+			if (i == ltr_idx)
+				ltr_control->ltr_list[ltr_idx].ltr_in_use =
+					true;
+			else
+				ltr_control->ltr_list[i].ltr_in_use = false;
+		}
+	}
+
+	return vcd_status;
+}
+
+void ddl_encoder_use_ltr_fail_callback(struct ddl_client_context *ddl)
+{
+	struct ddl_encoder_data *encoder = &(ddl->codec_data.encoder);
+	struct ddl_context *ddl_context = ddl->ddl_context;
+
+	DDL_MSG_ERROR("%s: LTR use failed, callback "\
+		"requested with LTR ID %d", __func__,
+		encoder->ltr_control.failed_use_cmd.ltr_id);
+
+	ddl_context->ddl_callback(VCD_EVT_IND_INFO_LTRUSE_FAILED,
+			VCD_ERR_ILLEGAL_PARM,
+			&(encoder->ltr_control.failed_use_cmd),
+			sizeof(struct vcd_property_ltruse_type),
+			(u32 *)ddl,
+			ddl->client_data);
+}
+
+void ddl_print_ltr_list(struct ddl_ltr_encoding_type *ltr_control)
+{
+	u32 i;
+
+	for (i = 0; i < ltr_control->ltr_count; i++) {
+		DDL_MSG_MED("%s: ltr_id: %d, ltr_in_use: %d",
+			__func__, ltr_control->ltr_list[i].ltr_id,
+			ltr_control->ltr_list[i].ltr_in_use);
+	}
+}
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_interrupt_handler.c b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_interrupt_handler.c
index d189408..163af21 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_interrupt_handler.c
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_interrupt_handler.c
@@ -822,13 +822,13 @@
 			pixel_cache_stats;
 			vidc_pix_cache_get_statistics(&pixel_cache_stats);
 
-			DDL_MSG_HIGH(" pixel cache hits = %d,"
+			DDL_MSG_LOW(" pixel cache hits = %d,"
 				"miss = %d", pixel_cache_stats.access_hit,
 				pixel_cache_stats.access_miss);
-			DDL_MSG_HIGH(" pixel cache core reqs = %d,"
+			DDL_MSG_LOW(" pixel cache core reqs = %d,"
 				"axi reqs = %d", pixel_cache_stats.core_req,
 				pixel_cache_stats.axi_req);
-			DDL_MSG_HIGH(" pixel cache core bus stats = %d,"
+			DDL_MSG_LOW(" pixel cache core bus stats = %d,"
 			"axi bus stats = %d", pixel_cache_stats.core_bus,
 				pixel_cache_stats.axi_bus);
 		}
@@ -1313,7 +1313,7 @@
 			DDL_MSG_LOW("%s y_cb_cr_size = %u "
 				"actual_output_buf_req.sz = %u"
 				"min_output_buf_req.sz = %u\n",
-				decoder->y_cb_cr_size,
+				__func__, decoder->y_cb_cr_size,
 				decoder->actual_output_buf_req.sz,
 				decoder->min_output_buf_req.sz);
 			vidc_sm_set_chroma_addr_change(
@@ -1474,7 +1474,7 @@
 		}
 	} else
 		status = false;
-	DDL_MSG_HIGH("Enc Frame Type %u", (u32)frame->frame);
+	DDL_MSG_LOW("Enc Frame Type %u", (u32)frame->frame);
 	return status;
 }
 
@@ -1764,7 +1764,17 @@
 			(unsigned long) output_frame->alloc_len,
 			ION_IOC_INV_CACHES);
 	}
-	ddl_process_encoder_metadata(ddl);
+
+	if ((VIDC_1080P_ENCODE_FRAMETYPE_SKIPPED !=
+		encoder->enc_frame_info.enc_frame) &&
+		(VIDC_1080P_ENCODE_FRAMETYPE_NOT_CODED !=
+		encoder->enc_frame_info.enc_frame)) {
+		if (DDL_IS_LTR_ENABLED(encoder))
+			ddl_handle_ltr_in_framedone(ddl);
+		ddl_process_encoder_metadata(ddl);
+		encoder->ltr_control.meta_data_reqd = false;
+	}
+	encoder->ltr_control.using = false;
 	ddl_vidc_encode_dynamic_property(ddl, false);
 	ddl->input_frame.frm_trans_end = false;
 	input_buffer_address = ddl_context->dram_base_a.align_physical_addr +
@@ -1828,9 +1838,9 @@
 			encoder->batch_frame.output_frame[actual_idx].vcd_frm);
 		DDL_MSG_LOW("OutBfr: vcd_frm 0x%x frmbfr(virtual) 0x%x"
 			"frmbfr(physical) 0x%x\n",
-			&output_frame,
-			output_frame.virtual_base_addr,
-			output_frame.physical_base_addr);
+			(u32)output_frame,
+			(u32)output_frame->virtual,
+			(u32)output_frame->physical);
 		vidc_1080p_get_encode_frame_info(&encoder->enc_frame_info);
 		vidc_sm_get_frame_tags(&ddl->shared_mem
 			[ddl->command_channel],
@@ -1908,17 +1918,17 @@
 		actual_idx =
 			slice_output->slice_info[start_bfr_idx+index]. \
 			stream_buffer_idx;
-		DDL_MSG_LOW("Slice Info: OutBfrIndex %d SliceSize %d",
+		DDL_MSG_LOW("Slice Info: OutBfrIndex %u SliceSize %u",
 			actual_idx,
 			slice_output->slice_info[start_bfr_idx+index]. \
-			stream_buffer_size, 0);
+			stream_buffer_size);
 		output_frame =
 		&(encoder->batch_frame.output_frame[actual_idx].vcd_frm);
 		DDL_MSG_LOW("OutBfr: vcd_frm 0x%x frmbfr(virtual) 0x%x"
 				"frmbfr(physical) 0x%x",
-				&output_frame,
-				output_frame.virtual_base_addr,
-				output_frame.physical_base_addr);
+				(u32)output_frame,
+				(u32)output_frame->virtual,
+				(u32)output_frame->physical);
 		vidc_1080p_get_encode_frame_info(
 			&encoder->enc_frame_info);
 		vidc_sm_get_frame_tags(&ddl->shared_mem
@@ -1936,8 +1946,8 @@
 			slice_output->slice_info[actual_idx].stream_buffer_size;
 		ddl->output_frame =
 			encoder->batch_frame.output_frame[actual_idx];
-		DDL_MSG_LOW(" %s actual_idx = %d"
-		"encoder->batch_frame.num_output_frames = %d\n", __func__,
+		DDL_MSG_LOW("%s: actual_idx = %u "\
+		"encoder->batch_frame.num_output_frames = %u\n", __func__,
 		actual_idx, encoder->batch_frame.num_output_frames);
 		if (encoder->batch_frame.num_output_frames == (actual_idx+1)) {
 			output_frame->flags |= VCD_FRAME_FLAG_ENDOFFRAME;
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_metadata.c b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_metadata.c
index f70c47c..1aee3d9 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_metadata.c
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_metadata.c
@@ -75,6 +75,9 @@
 		case VCD_METADATA_QCOMFILLER:
 			skip_words = 6;
 		break;
+		case VCD_METADATA_LTR_INFO:
+			skip_words = 9;
+		break;
 		}
 	}
 	buffer += skip_words;
@@ -146,17 +149,21 @@
 		hdr_entry[DDL_METADATA_HDR_VERSION_INDEX] = 0x00000101;
 		hdr_entry[DDL_METADATA_HDR_PORT_INDEX] = 1;
 		hdr_entry[DDL_METADATA_HDR_TYPE_INDEX] = VCD_METADATA_ENC_SLICE;
+
+		hdr_entry = ddl_metadata_hdr_entry(ddl, VCD_METADATA_LTR_INFO);
+		hdr_entry[DDL_METADATA_HDR_VERSION_INDEX] = 0x00000101;
+		hdr_entry[DDL_METADATA_HDR_PORT_INDEX] = 1;
+		hdr_entry[DDL_METADATA_HDR_TYPE_INDEX] = VCD_METADATA_LTR_INFO;
 	}
 }
 
 static u32 ddl_supported_metadata_flag(struct ddl_client_context *ddl)
 {
 	u32 flag = 0;
+	enum vcd_codec codec =
+		ddl->codec_data.decoder.codec.codec;
 
 	if (ddl->decoding) {
-		enum vcd_codec codec =
-			ddl->codec_data.decoder.codec.codec;
-
 		flag |= (VCD_METADATA_CONCEALMB | VCD_METADATA_PASSTHROUGH |
 				VCD_METADATA_QPARRAY);
 		if (codec == VCD_CODEC_H264)
@@ -167,8 +174,12 @@
 		else if (codec == VCD_CODEC_MPEG2)
 			flag |= (VCD_METADATA_USER_DATA |
 				VCD_METADATA_EXT_DATA);
-	} else
-		flag |= VCD_METADATA_ENC_SLICE;
+	} else {
+		if (codec == VCD_CODEC_H264)
+			flag |= VCD_METADATA_ENC_SLICE | VCD_METADATA_LTR_INFO;
+		else
+			flag |= VCD_METADATA_ENC_SLICE;
+	}
 	return flag;
 }
 
@@ -272,6 +283,12 @@
 		DDL_METADATA_ALIGNSIZE(size);
 		suffix += size;
 	}
+	if (flag & VCD_METADATA_LTR_INFO) {
+		size = DDL_METADATA_HDR_SIZE;
+		size += DDL_METADATA_LTR_INFO_PAYLOAD_SIZE;
+		DDL_METADATA_ALIGNSIZE(size);
+		suffix += size;
+	}
 	size = DDL_METADATA_EXTRADATANONE_SIZE;
 	DDL_METADATA_ALIGNSIZE(size);
 	suffix += (size);
@@ -497,27 +514,92 @@
 		&(ddl->output_frame.vcd_frm);
 	u32 *qfiller_hdr, *qfiller, start_addr;
 	u32 qfiller_size;
+	u8 *extradata_addr;
+	u32 metadata_available = false;
+
+	out_frame->flags &= ~(VCD_FRAME_FLAG_EXTRADATA);
 	if (!encoder->meta_data_enable_flag) {
-		out_frame->flags &= ~(VCD_FRAME_FLAG_EXTRADATA);
-		return;
+		DDL_MSG_HIGH("meta_data is not enabled");
+		goto exit;
 	}
-	if (!encoder->enc_frame_info.meta_data_exists) {
-		out_frame->flags &= ~(VCD_FRAME_FLAG_EXTRADATA);
-		return;
-	}
-	out_frame->flags |= VCD_FRAME_FLAG_EXTRADATA;
-	DDL_MSG_LOW("processing metadata for encoder");
 	start_addr = (u32) ((u8 *)out_frame->virtual + out_frame->offset);
-	qfiller = (u32 *)((out_frame->data_len +
+	extradata_addr = (u8 *)((out_frame->data_len +
 				start_addr + 3) & ~3);
+	qfiller = (u32 *)extradata_addr;
 	qfiller_size = (u32)((encoder->meta_data_offset +
 		(u8 *) out_frame->virtual) - (u8 *) qfiller);
+	if (qfiller_size & 3) {
+		DDL_MSG_ERROR("qfiller_size is not 4 bytes aligned");
+		goto exit;
+	}
 	qfiller_hdr = ddl_metadata_hdr_entry(ddl, VCD_METADATA_QCOMFILLER);
 	*qfiller++ = qfiller_size;
 	*qfiller++ = qfiller_hdr[DDL_METADATA_HDR_VERSION_INDEX];
 	*qfiller++ = qfiller_hdr[DDL_METADATA_HDR_PORT_INDEX];
 	*qfiller++ = qfiller_hdr[DDL_METADATA_HDR_TYPE_INDEX];
 	*qfiller = (u32)(qfiller_size - DDL_METADATA_HDR_SIZE);
+	extradata_addr += qfiller_size;
+	if ((u32)extradata_addr !=
+		(u32)((u8 *)start_addr + encoder->meta_data_offset)) {
+		DDL_MSG_ERROR("wrong qfiller size");
+		goto exit;
+	}
+	if (encoder->meta_data_enable_flag & VCD_METADATA_ENC_SLICE) {
+		u32 *sliceinfo = (u32 *)extradata_addr;
+		if (sliceinfo[3] != VCD_METADATA_ENC_SLICE) {
+			DDL_MSG_ERROR("wrong slice info extradata. " \
+				"data: 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x",
+				sliceinfo[0], sliceinfo[1],	sliceinfo[2],
+				sliceinfo[3], sliceinfo[4],	sliceinfo[5]);
+			goto metadata_end;
+		}
+		extradata_addr += sliceinfo[0];
+		metadata_available = true;
+		DDL_MSG_HIGH("%s: Send %u slices info in metadata",
+			__func__, sliceinfo[5]);
+	}
+	if ((encoder->meta_data_enable_flag & VCD_METADATA_LTR_INFO) &&
+		(encoder->ltr_control.meta_data_reqd == true)) {
+		u32 *ltrinfo_hdr = ddl_metadata_hdr_entry(ddl,
+				VCD_METADATA_LTR_INFO);
+		u32 *ltrinfo = (u32 *)extradata_addr;
+		if ((u32)extradata_addr > (u32)((u8 *)out_frame->virtual +
+			out_frame->alloc_len)) {
+			metadata_available = false;
+			DDL_MSG_ERROR("Error: extradata_addr = 0x%p, "\
+				"buffer_start = 0x%p, size = %u",
+				extradata_addr, out_frame->virtual,
+				out_frame->alloc_len);
+			goto metadata_end;
+		}
+		ltrinfo[0] = DDL_METADATA_LTR_INFO_PAYLOAD_SIZE +
+				DDL_METADATA_HDR_SIZE;
+		ltrinfo[1] = ltrinfo_hdr[DDL_METADATA_HDR_VERSION_INDEX];
+		ltrinfo[2] = ltrinfo_hdr[DDL_METADATA_HDR_PORT_INDEX];
+		ltrinfo[3] = ltrinfo_hdr[DDL_METADATA_HDR_TYPE_INDEX];
+		ltrinfo[4] = DDL_METADATA_LTR_INFO_PAYLOAD_SIZE;
+		ltrinfo[5] = encoder->ltr_control.curr_ltr_id;
+		extradata_addr += ltrinfo[0];
+		encoder->ltr_control.curr_ltr_id++;
+		metadata_available = true;
+		DDL_MSG_HIGH("%s: Send curr_ltr_id = %u in metadata",
+			__func__, (u32)encoder->ltr_control.curr_ltr_id);
+	}
+metadata_end:
+	if (metadata_available == true) {
+		u32 *data_none_hdr = ddl_metadata_hdr_entry(ddl,
+				VCD_METADATA_DATANONE);
+		u32 *data_none = (u32 *)extradata_addr;
+		DDL_MSG_LOW("prepare metadata_none header");
+		data_none[0] = DDL_METADATA_EXTRADATANONE_SIZE;
+		data_none[1] = data_none_hdr[DDL_METADATA_HDR_VERSION_INDEX];
+		data_none[2] = data_none_hdr[DDL_METADATA_HDR_PORT_INDEX];
+		data_none[3] = data_none_hdr[DDL_METADATA_HDR_TYPE_INDEX];
+		data_none[4] = 0;
+		out_frame->flags |= VCD_FRAME_FLAG_EXTRADATA;
+	}
+exit:
+	return;
 }
 
 void ddl_process_decoder_metadata(struct ddl_client_context *ddl)
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_metadata.h b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_metadata.h
index e03a9b7..4426828 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_metadata.h
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_metadata.h
@@ -26,6 +26,7 @@
 #define DDL_METADATA_SEI_PAYLOAD_SIZE          100
 #define DDL_METADATA_SEI_MAX                     5
 #define DDL_METADATA_VUI_PAYLOAD_SIZE          256
+#define DDL_METADATA_LTR_INFO_PAYLOAD_SIZE     (4)
 #define DDL_METADATA_PASSTHROUGH_PAYLOAD_SIZE   68
 #define DDL_METADATA_EXT_PAYLOAD_SIZE         (640)
 #define DDL_METADATA_USER_PAYLOAD_SIZE        (2048)
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_properties.c b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_properties.c
index 2b65d7e..94ec12e 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_properties.c
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_properties.c
@@ -163,6 +163,28 @@
 		DDL_MSG_ERROR("H264BaseLineCABAC!!");
 		return false;
 	}
+	if (DDL_IS_LTR_ENABLED(encoder)) {
+		if ((encoder->codec.codec != VCD_CODEC_H264) ||
+			(encoder->i_period.b_frames)) {
+			DDL_MSG_ERROR("%s: Only support LTR encoding "\
+				"for H264 without B frame. Current "\
+				"codec %d, B-frame %d", __func__,
+				encoder->codec.codec,
+				encoder->i_period.b_frames);
+			return false;
+		}
+		if (encoder->ltr_control.ltrmode.ltr_mode ==
+				VCD_LTR_MODE_MANUAL) {
+			DDL_MSG_ERROR("%s: Manual LTR mode not supported!",
+				__func__);
+			return false;
+		}
+		DDL_MSG_HIGH("%s: LTR: mode = %u, count = %u, period = %u",
+			__func__, (u32)encoder->ltr_control.ltrmode.ltr_mode,
+			encoder->ltr_control.ltr_count,
+			encoder->ltr_control.ltr_period);
+	}
+
 	return true;
 }
 
@@ -617,8 +639,9 @@
 		struct vcd_property_multi_slice *multi_slice =
 			(struct vcd_property_multi_slice *)
 				property_value;
-		DDL_MSG_HIGH("VCD_I_MULTI_SLICE eMSliceSel %d  nMSliceSize %d"
-				"Tot#of MB %d encoder->frame_size.width = %d"
+		DDL_MSG_HIGH("VCD_I_MULTI_SLICE eMSliceSel %d  "\
+				"nMSliceSize %d Tot#of MB %d "\
+				"encoder->frame_size.width = %d "\
 				"encoder->frame_size.height = %d",
 				(int)multi_slice->m_slice_sel,
 				multi_slice->m_slice_size,
@@ -1044,6 +1067,41 @@
 		}
 		break;
 	}
+	case VCD_I_LTR_MODE:
+		if (sizeof(struct vcd_property_ltrmode_type) ==
+			property_hdr->sz && encoder->codec.codec ==
+			VCD_CODEC_H264) {
+			struct vcd_property_ltrmode_type *ltrmode =
+				(struct vcd_property_ltrmode_type *)
+				property_value;
+			encoder->ltr_control.ltrmode.ltr_mode =
+				ltrmode->ltr_mode;
+			DDL_MSG_HIGH("%s: set LTR mode = %u", __func__,
+				(u32)encoder->ltr_control.ltrmode.ltr_mode);
+			vcd_status = VCD_S_SUCCESS;
+		}
+	break;
+	case VCD_I_LTR_COUNT:
+		if (sizeof(struct vcd_property_ltrcount_type) ==
+			property_hdr->sz && encoder->codec.codec ==
+			VCD_CODEC_H264) {
+			struct vcd_property_ltrcount_type *ltrcount =
+				(struct vcd_property_ltrcount_type *)
+				property_value;
+			if (ltrcount->ltr_count > DDL_MAX_NUM_LTR_FRAMES) {
+				DDL_MSG_ERROR("%s: set LTR count failed. "\
+					"LTR count %u beyond maximum of %u",
+					__func__, ltrcount->ltr_count,
+					(u32)DDL_MAX_NUM_LTR_FRAMES);
+			} else {
+				encoder->ltr_control.ltr_count =
+					ltrcount->ltr_count;
+				DDL_MSG_HIGH("%s: set LTR count = %u", __func__,
+					encoder->ltr_control.ltr_count);
+				vcd_status = VCD_S_SUCCESS;
+			}
+		}
+	break;
 	case VCD_REQ_PERF_LEVEL:
 		vcd_status = VCD_S_SUCCESS;
 		break;
@@ -1091,7 +1149,8 @@
 		break;
 	}
 	default:
-		DDL_MSG_ERROR("INVALID ID %d\n", (int)property_hdr->prop_id);
+		DDL_MSG_ERROR("%s: unknown prop_id = 0x%x", __func__,
+			property_hdr->prop_id);
 		vcd_status = VCD_ERR_ILLEGAL_OP;
 	break;
 	}
@@ -1552,7 +1611,7 @@
 	break;
 	case VCD_I_METADATA_ENABLE:
 	case VCD_I_METADATA_HEADER:
-		DDL_MSG_ERROR("Meta Data Interface is Requested");
+		DDL_MSG_HIGH("Meta Data Interface is Requested");
 		vcd_status = ddl_get_metadata_params(ddl, property_hdr,
 			property_value);
 		vcd_status = VCD_S_SUCCESS;
@@ -1591,7 +1650,67 @@
 			vcd_status = VCD_S_SUCCESS;
 		}
 		break;
+	case VCD_I_CAPABILITY_LTR_COUNT:
+		if (sizeof(struct vcd_property_range_type) ==
+			property_hdr->sz) {
+			struct vcd_property_range_type capability_ltr_range;
+			capability_ltr_range.max = DDL_MAX_NUM_LTR_FRAMES;
+			capability_ltr_range.min = 1;
+			capability_ltr_range.step_size = 1;
+			*(struct vcd_property_range_type *)property_value =
+				capability_ltr_range;
+			DDL_MSG_HIGH("%s: capability_ltr_count = %u",
+				__func__, ((struct vcd_property_range_type *)
+				property_value)->max);
+			vcd_status = VCD_S_SUCCESS;
+		}
+	break;
+	case VCD_I_LTR_MODE:
+		if (sizeof(struct vcd_property_ltrmode_type) ==
+			property_hdr->sz) {
+			((struct vcd_property_ltrmode_type *)
+			property_value)->ltr_mode =
+				encoder->ltr_control.ltrmode.ltr_mode;
+			DDL_MSG_HIGH("%s: ltr_mode = %u", __func__,
+				(u32)(((struct vcd_property_ltrmode_type *)
+				property_value)->ltr_mode));
+			vcd_status = VCD_S_SUCCESS;
+		}
+	break;
+	case VCD_I_LTR_COUNT:
+		if (sizeof(struct vcd_property_ltrcount_type) ==
+			property_hdr->sz) {
+			struct vcd_property_ltrcount_type ltr_count;
+			ltr_count.ltr_count =
+				encoder->ltr_control.ltr_count;
+			*(struct vcd_property_ltrcount_type *)property_value =
+				ltr_count;
+			DDL_MSG_HIGH("%s: ltr_count = %u", __func__,
+				((struct vcd_property_ltrcount_type *)
+				property_value)->ltr_count);
+			vcd_status = VCD_S_SUCCESS;
+		}
+	break;
+	case VCD_I_LTR_PERIOD:
+		if (sizeof(struct vcd_property_ltrperiod_type) ==
+			property_hdr->sz) {
+			struct vcd_property_ltrperiod_type ltr_period;
+			if (!encoder->ltr_control.ltr_period)
+				ltr_period.ltr_period = 0;
+			else
+				ltr_period.ltr_period =
+					encoder->ltr_control.ltr_period - 1;
+			*(struct vcd_property_ltrperiod_type *)property_value =
+				ltr_period;
+			DDL_MSG_HIGH("%s: ltr_period = %u", __func__,
+				((struct vcd_property_ltrperiod_type *)
+				property_value)->ltr_period);
+			vcd_status = VCD_S_SUCCESS;
+		}
+	break;
 	default:
+		DDL_MSG_ERROR("%s: unknown prop_id = 0x%x", __func__,
+			property_hdr->prop_id);
 		vcd_status = VCD_ERR_ILLEGAL_OP;
 		break;
 	}
@@ -1680,6 +1799,77 @@
 		}
 	}
 	break;
+	case VCD_I_LTR_PERIOD:
+	{
+		if (sizeof(struct vcd_property_ltrperiod_type) ==
+			property_hdr->sz) {
+			struct vcd_property_ltrperiod_type *ltrperiod =
+				(struct vcd_property_ltrperiod_type *)
+				property_value;
+			encoder->ltr_control.ltr_period =
+				(ltrperiod->ltr_period == 0xFFFFFFFF) ?
+				0xFFFFFFFF : (ltrperiod->ltr_period + 1);
+			DDL_MSG_HIGH("%s: set ltr_period = %u", __func__,
+				encoder->ltr_control.ltr_period);
+			vcd_status = VCD_S_SUCCESS;
+		}
+	}
+	break;
+	case VCD_I_LTR_USE:
+	{
+		if (sizeof(struct vcd_property_ltruse_type) ==
+			property_hdr->sz) {
+			struct vcd_property_ltruse_type *ltruse =
+				(struct vcd_property_ltruse_type *)
+				property_value;
+			if (ltruse->ltr_id >= DDL_LTR_FRAME_START_ID) {
+				struct ddl_ltr_encoding_type *ltr_ctrl =
+					&encoder->ltr_control;
+				s32 idx;
+				idx = ddl_find_ltr_from_list(ltr_ctrl,
+					ltruse->ltr_id);
+				if (idx < 0) {
+					ltr_ctrl->callback_reqd = true;
+					ltr_ctrl->failed_use_cmd.ltr_id =
+						ltruse->ltr_id;
+					ltr_ctrl->failed_use_cmd.ltr_frames =
+						ltruse->ltr_frames;
+					DDL_MSG_ERROR("%s: index (%d) "\
+					"not found. Callback requested. "\
+					"ltr_id = %u, ltr_frames = %u",
+					__func__, idx, ltruse->ltr_id,
+					ltruse->ltr_frames);
+				} else {
+					ddl_use_ltr_from_list(ltr_ctrl, idx);
+					ltr_ctrl->ltr_use_frames =
+						ltruse->ltr_frames;
+					if (ltr_ctrl->using == false)
+						ltr_ctrl->\
+						out_frame_cnt_to_use_this_ltr =
+							ltruse->ltr_frames;
+					else
+						ltr_ctrl->\
+						pending_chg_ltr_useframes =
+							true;
+					ltr_ctrl->first_ltr_use_arvd = true;
+					ltr_ctrl->use_ltr_reqd = true;
+					DDL_MSG_HIGH("%s: index (%d) found. "\
+					"num frames to use this ltr_id (%u) "\
+					"is %u", __func__, idx,
+					ltruse->ltr_id, ltruse->ltr_frames);
+				}
+				dynamic_prop_change = DDL_ENC_LTR_USE_FRAME;
+				vcd_status = VCD_S_SUCCESS;
+			} else {
+				DDL_MSG_ERROR("%s: LTRUse ID %d failed. "\
+					"LTR ID starts from %d", __func__,
+					ltruse->ltr_id,
+					(u32)DDL_LTR_FRAME_START_ID);
+				vcd_status = VCD_ERR_ILLEGAL_OP;
+			}
+		}
+	}
+	break;
 	default:
 		vcd_status = VCD_ERR_ILLEGAL_OP;
 		break;
@@ -1747,6 +1937,9 @@
 	encoder->num_references_for_p_frame = DDL_MIN_NUM_REF_FOR_P_FRAME;
 	if (encoder->codec.codec == VCD_CODEC_MPEG4)
 		encoder->closed_gop = true;
+	encoder->intra_period_changed = false;
+	memset(&encoder->ltr_control, 0,
+		sizeof(struct ddl_ltr_encoding_type));
 	ddl_set_default_metadata_flag(ddl);
 	ddl_set_default_encoder_buffer_req(encoder);
 	encoder->slice_delivery_info.enable = 0;
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_shared_mem.c b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_shared_mem.c
index de3fc4f..4c73bef 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_shared_mem.c
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_shared_mem.c
@@ -87,6 +87,8 @@
 #define VIDC_SM_ENC_EXT_CTRL_TIMING_INFO_EN_SHFT     14
 #define VIDC_SM_ENC_EXT_CTRL_AU_DELIMITER_EN_BMSK    0x00000800
 #define VIDC_SM_ENC_EXT_CTRL_AU_DELIMITER_EN_SHFT    11
+#define VIDC_SM_ENC_EXT_CTRL_LONG_TERM_REF_ENABLE_BMSK      0x00000400
+#define VIDC_SM_ENC_EXT_CTRL_LONG_TERM_REF_ENABLE_SHFT      10
 #define VIDC_SM_ENC_EXT_CTRL_H263_CPCFC_ENABLE_BMSK  0x80
 #define VIDC_SM_ENC_EXT_CTRL_H263_CPCFC_ENABLE_SHFT  7
 #define VIDC_SM_ENC_EXT_CTRL_SPS_PPS_CONTROL_BMSK    0X100
@@ -458,8 +460,8 @@
 	enum VIDC_SM_frame_skip frame_skip_mode,
 	u32 seq_hdr_in_band, u32 vbv_buffer_size, u32 cpcfc_enable,
 	u32 sps_pps_control, u32 closed_gop_enable,
-	u32 au_delim_enable,
-	u32 vui_timing_info_enable)
+	u32 au_delim_enable, u32 vui_timing_info_enable,
+	u32 ltr_enable)
 {
 	u32 enc_ctrl;
 	enc_ctrl = VIDC_SETFIELD((hec_enable) ? 1 : 0,
@@ -488,8 +490,10 @@
 			VIDC_SM_ENC_EXT_CTRL_AU_DELIMITER_EN_BMSK) |
 			VIDC_SETFIELD((vui_timing_info_enable) ? 1 : 0,
 			VIDC_SM_ENC_EXT_CTRL_TIMING_INFO_EN_SHFT,
-			VIDC_SM_ENC_EXT_CTRL_TIMING_INFO_EN_BMSK);
-
+			VIDC_SM_ENC_EXT_CTRL_TIMING_INFO_EN_BMSK) |
+			VIDC_SETFIELD((ltr_enable) ? 1 : 0,
+			VIDC_SM_ENC_EXT_CTRL_LONG_TERM_REF_ENABLE_SHFT,
+			VIDC_SM_ENC_EXT_CTRL_LONG_TERM_REF_ENABLE_BMSK);
 	DDL_MEM_WRITE_32(shared_mem, VIDC_SM_ENC_EXT_CTRL_ADDR, enc_ctrl);
 }
 
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_shared_mem.h b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_shared_mem.h
index 2eef99d..f344460 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_shared_mem.h
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_shared_mem.h
@@ -106,7 +106,8 @@
 	struct ddl_buf_addr *shared_mem, u32 hec_enable,
 	enum VIDC_SM_frame_skip  frame_skip_mode, u32 seq_hdr_in_band,
 	u32 vbv_buffer_size, u32 cpcfc_enable, u32 sps_pps_control,
-	u32 closed_gop_enable, u32 au_delim_enable, u32 vui_timing_info_enable);
+	u32 closed_gop_enable, u32 au_delim_enable, u32 vui_timing_info_enable,
+	u32 ltr_enable);
 void vidc_sm_set_encoder_param_change(struct ddl_buf_addr *shared_mem,
 	u32 bit_rate_chg, u32 frame_rate_chg, u32 i_period_chg);
 void vidc_sm_set_encoder_vop_time(struct ddl_buf_addr *shared_mem,
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_utils.h b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_utils.h
index 4963874..a099ade 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_utils.h
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_utils.h
@@ -34,7 +34,7 @@
 		printk(KERN_DEBUG x); \
 } while (0)
 
-#ifdef DDL_MSG_LOG
+#if DDL_MSG_LOG
 #define DDL_MSG_LOW(x...)    printk(KERN_INFO x)
 #define DDL_MSG_MED(x...)    printk(KERN_INFO x)
 #define DDL_MSG_HIGH(x...)   printk(KERN_INFO x)
diff --git a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_vidc.c b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_vidc.c
index 1bf242d..b84ec66 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_vidc.c
+++ b/drivers/video/msm/vidc/1080p/ddl/vcd_ddl_vidc.c
@@ -331,7 +331,7 @@
 {
 	struct ddl_encoder_data *encoder = &(ddl->codec_data.encoder);
 	u32 frame_rate_change = false, bit_rate_change = false;
-	u32 i_period_change = false, reset_req = false;
+	u32 reset_req = false;
 
 	if (!enable) {
 		if (encoder->dynmic_prop_change_req) {
@@ -344,6 +344,17 @@
 			encoder->dynamic_prop_change &=
 				~(DDL_ENC_REQ_IFRAME);
 		}
+		if (encoder->dynamic_prop_change & DDL_ENC_LTR_USE_FRAME) {
+			if (encoder->ltr_control.callback_reqd) {
+				DDL_MSG_ERROR("%s: LTR use failed", __func__);
+				ddl_encoder_use_ltr_fail_callback(ddl);
+				encoder->ltr_control.callback_reqd = false;
+			} else {
+				encoder->ltr_control.use_ltr_reqd = true;
+			}
+			encoder->dynamic_prop_change &=
+				~(DDL_ENC_LTR_USE_FRAME);
+		}
 		if ((encoder->dynamic_prop_change &
 			DDL_ENC_CHANGE_BITRATE)) {
 			bit_rate_change = true;
@@ -355,7 +366,7 @@
 		}
 		if ((encoder->dynamic_prop_change
 			& DDL_ENC_CHANGE_IPERIOD)) {
-			i_period_change = true;
+			encoder->intra_period_changed = true;
 			vidc_sm_set_encoder_new_i_period(
 				&ddl->shared_mem[ddl->command_channel],
 				encoder->i_period.p_frames);
@@ -387,7 +398,7 @@
 		vidc_sm_set_encoder_param_change(
 			&ddl->shared_mem[ddl->command_channel],
 			bit_rate_change, frame_rate_change,
-			i_period_change);
+			encoder->intra_period_changed);
 	}
 }
 
@@ -580,7 +591,7 @@
 	u32 index, luma[4], chroma[4], hdr_ext_control = false;
 	const u32 recon_bufs = 4;
 	u32 h263_cpfc_enable = false;
-	u32 scaled_frame_rate;
+	u32 scaled_frame_rate, ltr_enable;
 
 	ddl_vidc_encode_set_profile_level(ddl);
 	vidc_1080p_set_encode_frame_size(encoder->frame_size.width,
@@ -601,12 +612,14 @@
 		(DDL_FRAMERATE_SCALE(DDL_INITIAL_FRAME_RATE)
 		 != scaled_frame_rate) && encoder->plusptype_enable)
 		h263_cpfc_enable = true;
+	ltr_enable = DDL_IS_LTR_ENABLED(encoder);
+	DDL_MSG_HIGH("ltr_enable = %u", ltr_enable);
 	vidc_sm_set_extended_encoder_control(&ddl->shared_mem
 		[ddl->command_channel], hdr_ext_control,
 		r_cframe_skip, false, 0,
 		h263_cpfc_enable, encoder->sps_pps.sps_pps_for_idr_enable_flag,
 		encoder->closed_gop, encoder->avc_delimiter_enable,
-		encoder->vui_timinginfo_enable);
+		encoder->vui_timinginfo_enable, ltr_enable);
 	if (encoder->vui_timinginfo_enable) {
 		vidc_sm_set_h264_encoder_timing_info(
 			&ddl->shared_mem[ddl->command_channel],
@@ -809,7 +822,8 @@
 		encoder->dynmic_prop_change_req = true;
 		ddl_vidc_encode_dynamic_property(ddl, true);
 	}
-
+	if (DDL_IS_LTR_ENABLED(encoder))
+		ddl_encoder_ltr_control(ddl);
 	vidc_1080p_set_encode_circular_intra_refresh(
 		encoder->intra_refresh.cir_mb_number);
 	ddl_vidc_encode_set_multi_slice_info(encoder);
@@ -824,13 +838,21 @@
 	ddl_context->dram_base_a.align_physical_addr, stream->physical);
 	enc_param.stream_buffer_size =
 		encoder->client_output_buf_req.sz;
-
 	enc_param.intra_frame = encoder->intra_frame_insertion;
-	if (encoder->intra_frame_insertion)
-		encoder->intra_frame_insertion = false;
 	enc_param.input_flush = false;
 	enc_param.slice_enable = false;
-		vidc_sm_set_encoder_vop_time(
+	enc_param.store_ltr0 = encoder->ltr_control.store_ltr0;
+	enc_param.store_ltr1 = encoder->ltr_control.store_ltr1;
+	enc_param.use_ltr0 = encoder->ltr_control.use_ltr0;
+	enc_param.use_ltr1 = encoder->ltr_control.use_ltr1;
+
+	encoder->intra_frame_insertion = false;
+	encoder->intra_period_changed = false;
+	encoder->ltr_control.store_ltr0 = false;
+	encoder->ltr_control.store_ltr1 = false;
+	encoder->ltr_control.use_ltr0 = false;
+	encoder->ltr_control.use_ltr1 = false;
+	vidc_sm_set_encoder_vop_time(
 			&ddl->shared_mem[ddl->command_channel], true,
 			encoder->vop_timing.vop_time_resolution,
 			ddl->input_frame.frm_delta);
diff --git a/drivers/video/msm/vidc/1080p/ddl/vidc.c b/drivers/video/msm/vidc/1080p/ddl/vidc.c
index 3c445bc..396adaf 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vidc.c
+++ b/drivers/video/msm/vidc/1080p/ddl/vidc.c
@@ -83,6 +83,17 @@
 #define VIDC_1080P_SI_RG10_ENCODE_SLICE_IF_ENABLE_SHFT      31
 #define VIDC_1080P_MAX_INTRA_PERIOD 0xffff
 
+#define VIDC_1080P_COMMON_CHX_RG6_I_FRAME_BMASK              0x00000001
+#define VIDC_1080P_COMMON_CHX_RG6_I_FRAME_SHIFT              0
+#define VIDC_1080P_COMMON_CHX_RG6_STORE_LTR0_BMASK           0x00000008
+#define VIDC_1080P_COMMON_CHX_RG6_STORE_LTR0_SHIFT           3
+#define VIDC_1080P_COMMON_CHX_RG6_STORE_LTR1_BMASK           0x00000010
+#define VIDC_1080P_COMMON_CHX_RG6_STORE_LTR1_SHIFT           4
+#define VIDC_1080P_COMMON_CHX_RG6_USE_LTR0_BMASK             0x00000020
+#define VIDC_1080P_COMMON_CHX_RG6_USE_LTR0_SHIFT             5
+#define VIDC_1080P_COMMON_CHX_RG6_USE_LTR1_BMASK             0x00000040
+#define VIDC_1080P_COMMON_CHX_RG6_USE_LTR1_SHIFT             6
+
 u8 *VIDC_BASE_PTR;
 
 void vidc_1080p_do_sw_reset(enum vidc_1080p_reset init_flag)
@@ -787,7 +798,9 @@
 void vidc_1080p_encode_frame_start_ch0(
 	struct vidc_1080p_enc_frame_start_param *param)
 {
-	u32 input_flush;
+	u32 input_flush = 0;
+	u32 frame_insertion = 0;
+
 	VIDC_HWIO_OUT(REG_695082, VIDC_1080P_RISC2HOST_CMD_EMPTY);
 	VIDC_HWIO_OUT(REG_666957, VIDC_1080P_INIT_CH_INST_ID);
 	VIDC_HWIO_OUT(REG_117192,
@@ -798,7 +811,22 @@
 		VIDC_1080P_BASE_OFFSET_SHIFT);
 	VIDC_HWIO_OUT(REG_175608, param->current_c_addr_offset >>
 		VIDC_1080P_BASE_OFFSET_SHIFT);
-	VIDC_HWIO_OUT(REG_190381, param->intra_frame);
+	frame_insertion = VIDC_SETFIELD(param->intra_frame,
+			VIDC_1080P_COMMON_CHX_RG6_I_FRAME_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_I_FRAME_BMASK);
+	frame_insertion |= VIDC_SETFIELD(param->store_ltr0,
+			VIDC_1080P_COMMON_CHX_RG6_STORE_LTR0_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_STORE_LTR0_BMASK);
+	frame_insertion |= VIDC_SETFIELD(param->store_ltr1,
+			VIDC_1080P_COMMON_CHX_RG6_STORE_LTR1_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_STORE_LTR1_BMASK);
+	frame_insertion |= VIDC_SETFIELD(param->use_ltr0,
+			VIDC_1080P_COMMON_CHX_RG6_USE_LTR0_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_USE_LTR0_BMASK);
+	frame_insertion |= VIDC_SETFIELD(param->use_ltr1,
+			VIDC_1080P_COMMON_CHX_RG6_USE_LTR1_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_USE_LTR1_BMASK);
+	VIDC_HWIO_OUT(REG_190381, frame_insertion);
 	VIDC_HWIO_OUT(REG_889944, param->shared_mem_addr_offset);
 	input_flush = VIDC_SETFIELD(param->input_flush,
 			VIDC_1080P_SI_RG10_ENCODE_INPUT_BUFFER_FLUSH_SHFT,
@@ -816,7 +844,9 @@
 void vidc_1080p_encode_frame_start_ch1(
 	struct vidc_1080p_enc_frame_start_param *param)
 {
-	u32 input_flush;
+	u32 input_flush = 0;
+	u32 frame_insertion = 0;
+
 	VIDC_HWIO_OUT(REG_695082, VIDC_1080P_RISC2HOST_CMD_EMPTY);
 	VIDC_HWIO_OUT(REG_313350, VIDC_1080P_INIT_CH_INST_ID);
 	VIDC_HWIO_OUT(REG_980194,
@@ -827,7 +857,22 @@
 		VIDC_1080P_BASE_OFFSET_SHIFT);
 	VIDC_HWIO_OUT(REG_548308,  param->current_c_addr_offset >>
 		VIDC_1080P_BASE_OFFSET_SHIFT);
-	VIDC_HWIO_OUT(REG_887095, param->intra_frame);
+	frame_insertion = VIDC_SETFIELD(param->intra_frame,
+			VIDC_1080P_COMMON_CHX_RG6_I_FRAME_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_I_FRAME_BMASK);
+	frame_insertion |= VIDC_SETFIELD(param->store_ltr0,
+			VIDC_1080P_COMMON_CHX_RG6_STORE_LTR0_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_STORE_LTR0_BMASK);
+	frame_insertion |= VIDC_SETFIELD(param->store_ltr1,
+			VIDC_1080P_COMMON_CHX_RG6_STORE_LTR1_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_STORE_LTR1_BMASK);
+	frame_insertion |= VIDC_SETFIELD(param->use_ltr0,
+			VIDC_1080P_COMMON_CHX_RG6_USE_LTR0_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_USE_LTR0_BMASK);
+	frame_insertion |= VIDC_SETFIELD(param->use_ltr1,
+			VIDC_1080P_COMMON_CHX_RG6_USE_LTR1_SHIFT,
+			VIDC_1080P_COMMON_CHX_RG6_USE_LTR1_BMASK);
+	VIDC_HWIO_OUT(REG_887095, frame_insertion);
 	VIDC_HWIO_OUT(REG_652528, param->shared_mem_addr_offset);
 	input_flush = VIDC_SETFIELD(param->input_flush,
 			VIDC_1080P_SI_RG10_ENCODE_INPUT_BUFFER_FLUSH_SHFT,
diff --git a/drivers/video/msm/vidc/1080p/ddl/vidc.h b/drivers/video/msm/vidc/1080p/ddl/vidc.h
index 117612b..be4c35b 100644
--- a/drivers/video/msm/vidc/1080p/ddl/vidc.h
+++ b/drivers/video/msm/vidc/1080p/ddl/vidc.h
@@ -400,6 +400,10 @@
 	u32 intra_frame;
 	u32 input_flush;
 	u32 slice_enable;
+	u32 store_ltr0;
+	u32 store_ltr1;
+	u32 use_ltr0;
+	u32 use_ltr1;
 	enum vidc_1080p_encode encode;
 };
 struct vidc_1080p_enc_frame_info{
diff --git a/drivers/video/msm/vidc/common/enc/venc.c b/drivers/video/msm/vidc/common/enc/venc.c
index 763fbda..c05e568 100644
--- a/drivers/video/msm/vidc/common/enc/venc.c
+++ b/drivers/video/msm/vidc/common/enc/venc.c
@@ -218,15 +218,15 @@
 
 	switch (event) {
 	case VCD_EVT_RESP_OUTPUT_DONE:
-	   DBG("Send INPUT_DON message to client = %p\n",
+	   DBG("Send OUTPUT_DON message to client = %p\n",
 			client_ctx);
 	   break;
 	case VCD_EVT_RESP_OUTPUT_FLUSHED:
-	   DBG("Send INPUT_FLUSHED message to client = %p\n",
+	   DBG("Send OUTPUT_FLUSHED message to client = %p\n",
 		   client_ctx);
 	   break;
 	default:
-	   ERR("QVD: vid_enc_output_frame_done invalid cmd type: %d\n", event);
+	   ERR("vid_enc_output_frame_done: invalid cmd type: %d\n", event);
 	   venc_msg->venc_msg_info.statuscode = VEN_S_EFATAL;
 	   break;
 	}
@@ -336,6 +336,12 @@
 		venc_msg->venc_msg_info.msgcode =
 			VEN_MSG_PAUSE;
 		break;
+	case VCD_EVT_IND_INFO_LTRUSE_FAILED:
+		INFO("\n msm_vidc_enc: Sending VEN_MSG_LTRUSE_FAILED"\
+			 " to client");
+		venc_msg->venc_msg_info.msgcode =
+			VEN_MSG_LTRUSE_FAILED;
+		break;
 
 	default:
 		ERR("%s() : unknown event type %u\n",
@@ -394,6 +400,7 @@
 	case VCD_EVT_IND_OUTPUT_RECONFIG:
 	case VCD_EVT_IND_HWERRFATAL:
 	case VCD_EVT_IND_RESOURCES_LOST:
+	case VCD_EVT_IND_INFO_LTRUSE_FAILED:
 		vid_enc_lean_event(client_ctx, event, status);
 		break;
 
@@ -790,17 +797,18 @@
 		struct venc_buffer enc_buffer;
 		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
 			return -EFAULT;
-		DBG("VEN_IOCTL_CMD_ENCODE_FRAME"
-			"/VEN_IOCTL_CMD_FILL_OUTPUT_BUFFER\n");
 		if (copy_from_user(&enc_buffer, venc_msg.in,
 						   sizeof(enc_buffer)))
 			return -EFAULT;
-		if (cmd == VEN_IOCTL_CMD_ENCODE_FRAME)
+		if (cmd == VEN_IOCTL_CMD_ENCODE_FRAME) {
+			DBG("VEN_IOCTL_CMD_ENCODE_FRAME\n");
 			result = vid_enc_encode_frame(client_ctx,
 					&enc_buffer);
-		else
+		} else {
+			DBG("VEN_IOCTL_CMD_FILL_OUTPUT_BUFFER\n");
 			result = vid_enc_fill_output_buffer(client_ctx,
 					&enc_buffer);
+		}
 		if (!result) {
 			DBG("\n VEN_IOCTL_CMD_ENCODE_FRAME/"
 				"VEN_IOCTL_CMD_FILL_OUTPUT_BUFFER failed");
@@ -866,19 +874,19 @@
 		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
 			return -EFAULT;
 
-		DBG("VEN_IOCTL_SET_INPUT_BUFFER_REQ"
-			"/VEN_IOCTL_SET_OUTPUT_BUFFER_REQ\n");
-
 		if (copy_from_user(&allocatorproperty, venc_msg.in,
 			sizeof(allocatorproperty)))
 			return -EFAULT;
 
-		if (cmd == VEN_IOCTL_SET_OUTPUT_BUFFER_REQ)
-				result = vid_enc_set_buffer_req(client_ctx,
-						&allocatorproperty, false);
-		else
+		if (cmd == VEN_IOCTL_SET_OUTPUT_BUFFER_REQ) {
+			DBG("VEN_IOCTL_SET_OUTPUT_BUFFER_REQ\n");
+			result = vid_enc_set_buffer_req(client_ctx,
+					&allocatorproperty, false);
+		} else {
+			DBG("VEN_IOCTL_SET_INPUT_BUFFER_REQ\n");
 			result = vid_enc_set_buffer_req(client_ctx,
 					&allocatorproperty, true);
+		}
 		if (!result) {
 			DBG("setting VEN_IOCTL_SET_OUTPUT_BUFFER_REQ/"
 			"VEN_IOCTL_SET_INPUT_BUFFER_REQ failed\n");
@@ -893,15 +901,15 @@
 		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
 			return -EFAULT;
 
-		DBG("VEN_IOCTL_GET_INPUT_BUFFER_REQ/"
-			"VEN_IOCTL_GET_OUTPUT_BUFFER_REQ\n");
-
-		if (cmd == VEN_IOCTL_GET_OUTPUT_BUFFER_REQ)
+		if (cmd == VEN_IOCTL_GET_OUTPUT_BUFFER_REQ) {
+			DBG("VEN_IOCTL_GET_OUTPUT_BUFFER_REQ\n");
 			result = vid_enc_get_buffer_req(client_ctx,
 					&allocatorproperty, false);
-		else
+		} else {
+			DBG("VEN_IOCTL_GET_INPUT_BUFFER_REQ\n");
 			result = vid_enc_get_buffer_req(client_ctx,
 					&allocatorproperty, true);
+		}
 		if (!result)
 			return -EIO;
 		if (copy_to_user(venc_msg.out, &allocatorproperty,
@@ -1342,6 +1350,7 @@
 	}
 	case VEN_IOCTL_CMD_REQUEST_IFRAME:
 	{
+		DBG("VEN_IOCTL_CMD_REQUEST_IFRAME\n");
 		result = vid_enc_request_iframe(client_ctx);
 		if (!result) {
 			ERR("setting VEN_IOCTL_CMD_REQUEST_IFRAME failed\n");
@@ -1565,6 +1574,7 @@
 		struct vcd_property_hdr vcd_property_hdr;
 		struct vcd_property_live live_mode;
 
+		DBG("VEN_IOCTL_SET_METABUFFER_MODE\n");
 		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
 			return -EFAULT;
 		if (copy_from_user(&metabuffer_mode, venc_msg.in,
@@ -1614,6 +1624,7 @@
 		struct vcd_property_hdr vcd_property_hdr;
 		u32 vcd_status = VCD_ERR_FAIL;
 		u32 enable = true;
+		DBG("VEN_IOCTL_SET_SLICE_DELIVERY_MODE\n");
 		vcd_property_hdr.prop_id = VCD_I_SLICE_DELIVERY_MODE;
 		vcd_property_hdr.sz = sizeof(u32);
 		vcd_status = vcd_set_property(client_ctx->vcd_handle,
@@ -1647,6 +1658,143 @@
 		}
 		break;
 	}
+	case VEN_IOCTL_SET_LTRMODE:
+	case VEN_IOCTL_GET_LTRMODE:
+	{
+		struct venc_ltrmode encoder_ltrmode;
+		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
+			return -EFAULT;
+		if (cmd == VEN_IOCTL_SET_LTRMODE) {
+			DBG("VEN_IOCTL_SET_LTRMODE\n");
+			if (copy_from_user(&encoder_ltrmode, venc_msg.in,
+					sizeof(encoder_ltrmode)))
+				return -EFAULT;
+			result = vid_enc_set_get_ltrmode(client_ctx,
+					&encoder_ltrmode, true);
+		} else {
+			DBG("VEN_IOCTL_GET_LTRMODE\n");
+			result = vid_enc_set_get_ltrmode(client_ctx,
+					&encoder_ltrmode, false);
+			if (result) {
+				if (copy_to_user(venc_msg.out, &encoder_ltrmode,
+						sizeof(encoder_ltrmode)))
+					return -EFAULT;
+			}
+		}
+		if (!result) {
+			ERR("VEN_IOCTL_(G)SET_LTRMODE failed\n");
+			return -EIO;
+		}
+		break;
+	}
+	case VEN_IOCTL_SET_LTRCOUNT:
+	case VEN_IOCTL_GET_LTRCOUNT:
+	{
+		struct venc_ltrcount encoder_ltrcount;
+		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
+			return -EFAULT;
+		if (cmd == VEN_IOCTL_SET_LTRCOUNT) {
+			DBG("VEN_IOCTL_SET_LTRCOUNT\n");
+			if (copy_from_user(&encoder_ltrcount, venc_msg.in,
+					sizeof(encoder_ltrcount)))
+				return -EFAULT;
+			result = vid_enc_set_get_ltrcount(client_ctx,
+					&encoder_ltrcount, true);
+		} else {
+			DBG("VEN_IOCTL_GET_LTRCOUNT\n");
+			result = vid_enc_set_get_ltrcount(client_ctx,
+					&encoder_ltrcount, false);
+			if (result) {
+				if (copy_to_user(venc_msg.out,
+					&encoder_ltrcount,
+					sizeof(encoder_ltrcount)))
+					return -EFAULT;
+			}
+		}
+		if (!result) {
+			ERR("VEN_IOCTL_(G)SET_LTRCOUNT failed\n");
+			return -EIO;
+		}
+		break;
+	}
+	case VEN_IOCTL_SET_LTRPERIOD:
+	case VEN_IOCTL_GET_LTRPERIOD:
+	{
+		struct venc_ltrperiod encoder_ltrperiod;
+		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
+			return -EFAULT;
+		if (cmd == VEN_IOCTL_SET_LTRPERIOD) {
+			DBG("VEN_IOCTL_SET_LTRPERIOD\n");
+			if (copy_from_user(&encoder_ltrperiod, venc_msg.in,
+					sizeof(encoder_ltrperiod)))
+				return -EFAULT;
+			result = vid_enc_set_get_ltrperiod(client_ctx,
+					&encoder_ltrperiod, true);
+		} else {
+			DBG("VEN_IOCTL_GET_LTRPERIOD\n");
+			result = vid_enc_set_get_ltrperiod(client_ctx,
+					&encoder_ltrperiod, false);
+			if (result) {
+				if (copy_to_user(venc_msg.out,
+					&encoder_ltrperiod,
+					sizeof(encoder_ltrperiod)))
+					return -EFAULT;
+			}
+		}
+		if (!result) {
+			ERR("VEN_IOCTL_(G)SET_LTRPERIOD failed\n");
+			return -EIO;
+		}
+		break;
+	}
+	case VEN_IOCTL_GET_CAPABILITY_LTRCOUNT:
+	{
+		struct venc_range venc_capltrcount;
+		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
+			return -EFAULT;
+		DBG("VEN_IOCTL_GET_CAPABILITY_LTRCOUNT\n");
+		result = vid_enc_get_capability_ltrcount(client_ctx,
+					&venc_capltrcount);
+		if (result) {
+			if (copy_to_user(venc_msg.out, &venc_capltrcount,
+					sizeof(venc_capltrcount)))
+				return -EFAULT;
+		} else {
+			ERR("VEN_IOCTL_GET_CAPABILITY_LTRCOUNT failed\n");
+			return -EIO;
+		}
+		break;
+	}
+	case VEN_IOCTL_SET_LTRUSE:
+	case VEN_IOCTL_GET_LTRUSE:
+	{
+		struct venc_ltruse encoder_ltruse;
+		if (copy_from_user(&venc_msg, arg, sizeof(venc_msg)))
+			return -EFAULT;
+		if (cmd == VEN_IOCTL_SET_LTRUSE) {
+			DBG("VEN_IOCTL_SET_LTRUSE\n");
+			if (copy_from_user(&encoder_ltruse, venc_msg.in,
+					sizeof(encoder_ltruse)))
+				return -EFAULT;
+			result = vid_enc_set_get_ltruse(client_ctx,
+						&encoder_ltruse, true);
+		} else {
+			DBG("VEN_IOCTL_GET_LTRUSE\n");
+			result = vid_enc_set_get_ltruse(client_ctx,
+						&encoder_ltruse, false);
+			if (result) {
+				if (copy_to_user(venc_msg.out,
+					&encoder_ltruse,
+					sizeof(encoder_ltruse)))
+					return -EFAULT;
+			}
+		}
+		if (!result) {
+			ERR("VEN_IOCTL_(G)SET_LTRUSE failed\n");
+			return -EIO;
+		}
+		break;
+	}
 	case VEN_IOCTL_SET_AC_PREDICTION:
 	case VEN_IOCTL_GET_AC_PREDICTION:
 	case VEN_IOCTL_SET_RVLC:
diff --git a/drivers/video/msm/vidc/common/enc/venc_internal.c b/drivers/video/msm/vidc/common/enc/venc_internal.c
index 8779432..7a26d2e 100644
--- a/drivers/video/msm/vidc/common/enc/venc_internal.c
+++ b/drivers/video/msm/vidc/common/enc/venc_internal.c
@@ -328,6 +328,42 @@
 	vcd_property_hdr.prop_id = VCD_I_METADATA_ENABLE;
 	vcd_property_hdr.sz = sizeof(struct vcd_property_meta_data_enable);
 	if (set_flag) {
+		DBG("vcd_set_property: VCD_I_METADATA_ENABLE = %x\n",
+				(u32)*extradata_flag);
+		vcd_meta_data.meta_data_enable_flag = *extradata_flag;
+		vcd_status = vcd_set_property(client_ctx->vcd_handle,
+					&vcd_property_hdr, &vcd_meta_data);
+		if (vcd_status) {
+			ERR("%s(): Set VCD_I_METADATA_ENABLE Failed\n",
+				__func__);
+			return false;
+		}
+	} else {
+		vcd_status = vcd_get_property(client_ctx->vcd_handle,
+					&vcd_property_hdr, &vcd_meta_data);
+		if (vcd_status) {
+			ERR("%s(): Get VCD_I_METADATA_ENABLE Failed\n",
+				__func__);
+			return false;
+		}
+		*extradata_flag = vcd_meta_data.meta_data_enable_flag;
+		DBG("vcd_get_property: VCD_I_METADATA_ENABLE = 0x%x\n",
+				(u32)*extradata_flag);
+	}
+	return true;
+}
+
+u32 vid_enc_set_get_extradata_cfg(struct video_client_ctx *client_ctx,
+		u32 *extradata_flag, u32 set_flag)
+{
+	struct vcd_property_hdr vcd_property_hdr;
+	struct vcd_property_meta_data_enable vcd_meta_data;
+	u32 vcd_status = VCD_ERR_FAIL;
+	if (!client_ctx || !extradata_flag)
+		return false;
+	vcd_property_hdr.prop_id = VCD_I_METADATA_ENABLE;
+	vcd_property_hdr.sz = sizeof(struct vcd_property_meta_data_enable);
+	if (set_flag) {
 		DBG("vcd_set_property: VCD_I_METADATA_ENABLE = %d\n",
 				*extradata_flag);
 		vcd_meta_data.meta_data_enable_flag = *extradata_flag;
@@ -1995,3 +2031,215 @@
 			return false;
 		}
 }
+
+u32 vid_enc_set_get_ltrmode(struct video_client_ctx *client_ctx,
+		struct venc_ltrmode *venc_ltrmode, u32 set_flag)
+{
+	struct vcd_property_ltrmode_type vcd_property_ltrmode;
+	struct vcd_property_hdr vcd_property_hdr;
+	u32 vcd_status = VCD_ERR_FAIL;
+
+	if (!client_ctx || !venc_ltrmode)
+		return false;
+
+	vcd_property_hdr.prop_id = VCD_I_LTR_MODE;
+	vcd_property_hdr.sz =
+		sizeof(struct vcd_property_ltrmode_type);
+
+	if (set_flag) {
+		vcd_property_ltrmode.ltr_mode = (enum vcd_property_ltrmode)
+			venc_ltrmode->ltr_mode;
+		DBG("%s: Set ltr_mode = %u", __func__,
+			(u32)vcd_property_ltrmode.ltr_mode);
+		vcd_status = vcd_set_property(client_ctx->vcd_handle,
+				&vcd_property_hdr, &vcd_property_ltrmode);
+		if (vcd_status) {
+			ERR("%s(): Set VCD_I_LTR_MODE Failed\n",
+					__func__);
+			return false;
+		}
+	} else {
+		vcd_status = vcd_get_property(client_ctx->vcd_handle,
+				&vcd_property_hdr, &vcd_property_ltrmode);
+		if (vcd_status) {
+			ERR("%s(): Get VCD_I_LTR_MODE Failed\n",
+					__func__);
+			return false;
+		} else {
+			venc_ltrmode->ltr_mode = (unsigned long)
+				vcd_property_ltrmode.ltr_mode;
+			DBG("%s: Got ltr_mode = %u", __func__,
+				(u32)vcd_property_ltrmode.ltr_mode);
+		}
+	}
+
+	return true;
+}
+
+u32 vid_enc_set_get_ltrcount(struct video_client_ctx *client_ctx,
+		struct venc_ltrcount *venc_ltrcount, u32 set_flag)
+{
+	struct vcd_property_ltrcount_type vcd_property_ltrcount;
+	struct vcd_property_hdr vcd_property_hdr;
+	u32 vcd_status = VCD_ERR_FAIL;
+
+	if (!client_ctx || !venc_ltrcount)
+		return false;
+
+	vcd_property_hdr.prop_id = VCD_I_LTR_COUNT;
+	vcd_property_hdr.sz =
+		sizeof(struct vcd_property_ltrcount_type);
+
+	if (set_flag) {
+		vcd_property_ltrcount.ltr_count = (u32)
+			venc_ltrcount->ltr_count;
+		DBG("%s: Set ltr_count = %u", __func__,
+			(u32)vcd_property_ltrcount.ltr_count);
+		vcd_status = vcd_set_property(client_ctx->vcd_handle,
+				&vcd_property_hdr, &vcd_property_ltrcount);
+		if (vcd_status) {
+			ERR("%s(): Set VCD_I_LTR_COUNT Failed\n",
+					__func__);
+			return false;
+		}
+	} else {
+		vcd_status = vcd_get_property(client_ctx->vcd_handle,
+				&vcd_property_hdr, &vcd_property_ltrcount);
+		if (vcd_status) {
+			ERR("%s(): Get VCD_I_LTR_COUNT Failed\n",
+					__func__);
+			return false;
+		} else {
+			venc_ltrcount->ltr_count = (unsigned long)
+				vcd_property_ltrcount.ltr_count;
+			DBG("%s: Got ltr_count = %u", __func__,
+				(u32)vcd_property_ltrcount.ltr_count);
+		}
+	}
+
+	return true;
+}
+
+u32 vid_enc_set_get_ltrperiod(struct video_client_ctx *client_ctx,
+		struct venc_ltrperiod *venc_ltrperiod, u32 set_flag)
+{
+	struct vcd_property_ltrperiod_type vcd_property_ltrperiod;
+	struct vcd_property_hdr vcd_property_hdr;
+	u32 vcd_status = VCD_ERR_FAIL;
+
+	if (!client_ctx || !venc_ltrperiod)
+		return false;
+
+	vcd_property_hdr.prop_id = VCD_I_LTR_PERIOD;
+	vcd_property_hdr.sz =
+		sizeof(struct vcd_property_ltrperiod_type);
+
+	if (set_flag) {
+		vcd_property_ltrperiod.ltr_period = (u32)
+			venc_ltrperiod->ltr_period;
+		DBG("%s: Set ltr_period = %u", __func__,
+			(u32)vcd_property_ltrperiod.ltr_period);
+		vcd_status = vcd_set_property(client_ctx->vcd_handle,
+				&vcd_property_hdr, &vcd_property_ltrperiod);
+		if (vcd_status) {
+			ERR("%s(): Set VCD_I_LTR_PERIOD Failed\n",
+					__func__);
+			return false;
+		}
+	} else {
+		vcd_status = vcd_get_property(client_ctx->vcd_handle,
+				&vcd_property_hdr, &vcd_property_ltrperiod);
+		if (vcd_status) {
+			ERR("%s(): Get VCD_I_LTR_PERIOD Failed\n",
+					__func__);
+			return false;
+		} else {
+			venc_ltrperiod->ltr_period = (unsigned long)
+				vcd_property_ltrperiod.ltr_period;
+			DBG("%s: Got ltr_period = %u", __func__,
+				(u32)vcd_property_ltrperiod.ltr_period);
+		}
+	}
+
+	return true;
+}
+
+u32 vid_enc_set_get_ltruse(struct video_client_ctx *client_ctx,
+		struct venc_ltruse *venc_ltruse, u32 set_flag)
+{
+	struct vcd_property_ltruse_type vcd_property_ltruse;
+	struct vcd_property_hdr vcd_property_hdr;
+	u32 vcd_status = VCD_ERR_FAIL;
+
+	if (!client_ctx || !venc_ltruse)
+		return false;
+
+	vcd_property_hdr.prop_id = VCD_I_LTR_USE;
+	vcd_property_hdr.sz =
+		sizeof(struct vcd_property_ltruse_type);
+
+	if (set_flag) {
+		vcd_property_ltruse.ltr_id = (u32)
+			venc_ltruse->ltr_id;
+		vcd_property_ltruse.ltr_frames = (u32)
+			venc_ltruse->ltr_frames;
+		DBG("%s: Set ltr_id = %u, ltr_frames = %u",
+			__func__, vcd_property_ltruse.ltr_id,
+			vcd_property_ltruse.ltr_frames);
+		vcd_status = vcd_set_property(client_ctx->vcd_handle,
+				&vcd_property_hdr, &vcd_property_ltruse);
+		if (vcd_status) {
+			ERR("%s(): Set VCD_I_LTR_USE Failed\n",
+					__func__);
+			return false;
+		}
+	} else {
+		vcd_status = vcd_get_property(client_ctx->vcd_handle,
+				&vcd_property_hdr, &vcd_property_ltruse);
+		if (vcd_status) {
+			ERR("%s(): Get VCD_I_LTR_USE Failed\n",
+					__func__);
+			return false;
+		} else {
+			venc_ltruse->ltr_id = (unsigned long)
+				vcd_property_ltruse.ltr_id;
+			venc_ltruse->ltr_frames = (unsigned long)
+				vcd_property_ltruse.ltr_frames;
+			DBG("%s: Got ltr_id = %u, ltr_frames = %u",
+				__func__, vcd_property_ltruse.ltr_id,
+				vcd_property_ltruse.ltr_frames);
+		}
+	}
+
+	return true;
+}
+
+u32 vid_enc_get_capability_ltrcount(struct video_client_ctx *client_ctx,
+		struct venc_range *venc_capltrcount)
+{
+	struct vcd_property_range_type vcd_property_range;
+	struct vcd_property_hdr vcd_property_hdr;
+	u32 vcd_status = VCD_ERR_FAIL;
+
+	if (!client_ctx || !venc_capltrcount)
+		return false;
+
+	vcd_property_hdr.prop_id = VCD_I_CAPABILITY_LTR_COUNT;
+	vcd_property_hdr.sz = sizeof(struct vcd_property_range_type);
+	vcd_status = vcd_get_property(client_ctx->vcd_handle,
+					&vcd_property_hdr, &vcd_property_range);
+	if (vcd_status) {
+		ERR("%s(): Get VCD_I_CAPABILITY_LTR_COUNT Failed\n",
+			__func__);
+		return false;
+	} else {
+		venc_capltrcount->min = vcd_property_range.min;
+		venc_capltrcount->max = vcd_property_range.max;
+		venc_capltrcount->step_size = vcd_property_range.step_size;
+		DBG("%s: Got min: %lu, max: %lu, step_size: %lu", __func__,
+			venc_capltrcount->min, venc_capltrcount->max,
+			venc_capltrcount->step_size);
+	}
+
+	return true;
+}
diff --git a/drivers/video/msm/vidc/common/enc/venc_internal.h b/drivers/video/msm/vidc/common/enc/venc_internal.h
index 8a07fdb..17cefbb 100644
--- a/drivers/video/msm/vidc/common/enc/venc_internal.h
+++ b/drivers/video/msm/vidc/common/enc/venc_internal.h
@@ -151,4 +151,19 @@
 u32 vid_enc_get_recon_buffer_size(struct video_client_ctx *client_ctx,
 		struct venc_recon_buff_size *venc_recon_size);
 
+u32 vid_enc_set_get_ltrmode(struct video_client_ctx *client_ctx,
+		struct venc_ltrmode *encoder_ltrmode, u32 set_flag);
+
+u32 vid_enc_set_get_ltrcount(struct video_client_ctx *client_ctx,
+		struct venc_ltrcount *encoder_ltrcount, u32 set_flag);
+
+u32 vid_enc_set_get_ltrperiod(struct video_client_ctx *client_ctx,
+		struct venc_ltrperiod *encoder_ltrperiod, u32 set_flag);
+
+u32 vid_enc_get_capability_ltrcount(struct video_client_ctx *client_ctx,
+		struct venc_range *venc_capltrcount);
+
+u32 vid_enc_set_get_ltruse(struct video_client_ctx *client_ctx,
+		struct venc_ltruse *encoder_ltruse, u32 set_flag);
+
 #endif
diff --git a/drivers/video/msm/vidc/common/vcd/vcd.h b/drivers/video/msm/vidc/common/vcd/vcd.h
index a22adeb..5b2450e 100644
--- a/drivers/video/msm/vidc/common/vcd/vcd.h
+++ b/drivers/video/msm/vidc/common/vcd/vcd.h
@@ -402,4 +402,7 @@
 struct vcd_transc *vcd_get_first_in_use_trans_for_clnt(
 	struct vcd_clnt_ctxt *cctxt);
 
+u32 vcd_handle_ltr_use_failed(struct vcd_clnt_ctxt *cctxt,
+	void *payload, size_t sz, u32 status);
+
 #endif
diff --git a/drivers/video/msm/vidc/common/vcd/vcd_client_sm.c b/drivers/video/msm/vidc/common/vcd/vcd_client_sm.c
index 8f52f83..983923b 100644
--- a/drivers/video/msm/vidc/common/vcd/vcd_client_sm.c
+++ b/drivers/video/msm/vidc/common/vcd/vcd_client_sm.c
@@ -964,6 +964,12 @@
 			vcd_handle_ind_info_output_reconfig(cctxt, status);
 			break;
 		}
+	case VCD_EVT_IND_INFO_LTRUSE_FAILED:
+		{
+			rc = vcd_handle_ltr_use_failed(cctxt,
+					payload, sz, status);
+			break;
+		}
 	default:
 		{
 			VCD_MSG_ERROR
diff --git a/drivers/video/msm/vidc/common/vcd/vcd_sub.c b/drivers/video/msm/vidc/common/vcd/vcd_sub.c
index a4c44f3..78d77d1 100644
--- a/drivers/video/msm/vidc/common/vcd/vcd_sub.c
+++ b/drivers/video/msm/vidc/common/vcd/vcd_sub.c
@@ -3516,3 +3516,14 @@
 	}
 	return rc;
 }
+
+u32 vcd_handle_ltr_use_failed(struct vcd_clnt_ctxt *cctxt,
+	void *payload, size_t sz, u32 status)
+{
+	u32 rc = VCD_S_SUCCESS;
+	if (payload && cctxt) {
+		cctxt->callback(VCD_EVT_IND_INFO_LTRUSE_FAILED,
+			status, payload, sz, cctxt, cctxt->client_data);
+	}
+	return rc;
+}
diff --git a/include/linux/msm_vidc_enc.h b/include/linux/msm_vidc_enc.h
index ea7db81..dde126c 100644
--- a/include/linux/msm_vidc_enc.h
+++ b/include/linux/msm_vidc_enc.h
@@ -44,6 +44,8 @@
 #define VEN_MSG_PAUSE	8
 #define VEN_MSG_RESUME	9
 #define VEN_MSG_STOP_READING_MSG	10
+#define VEN_MSG_LTRUSE_FAILED	    11
+
 
 /*Buffer flags bits masks*/
 #define VEN_BUFFLAG_EOS	0x00000001
@@ -56,6 +58,7 @@
 #define VEN_EXTRADATA_NONE          0x001
 #define VEN_EXTRADATA_QCOMFILLER    0x002
 #define VEN_EXTRADATA_SLICEINFO     0x100
+#define VEN_EXTRADATA_LTRINFO       0x200
 
 /*ENCODER CONFIGURATION CONSTANTS*/
 
@@ -461,6 +464,55 @@
 #define VEN_IOCTL_SET_H263_PLUSPTYPE \
 	_IOW(VEN_IOCTLBASE_ENC, 51, struct venc_ioctl_msg)
 
+/*IOCTL params:SET: InputData - venc_range, OutputData - NULL.*/
+#define VEN_IOCTL_SET_CAPABILITY_LTRCOUNT \
+	_IOW(VEN_IOCTLBASE_ENC, 52, struct venc_ioctl_msg)
+/*IOCTL params:GET: InputData - NULL, OutputData - venc_range.*/
+#define VEN_IOCTL_GET_CAPABILITY_LTRCOUNT \
+	_IOR(VEN_IOCTLBASE_ENC, 53, struct venc_ioctl_msg)
+
+/*IOCTL params:SET: InputData - venc_ltrmode, OutputData - NULL.*/
+#define VEN_IOCTL_SET_LTRMODE \
+	_IOW(VEN_IOCTLBASE_ENC, 54, struct venc_ioctl_msg)
+/*IOCTL params:GET: InputData - NULL, OutputData - venc_ltrmode.*/
+#define VEN_IOCTL_GET_LTRMODE \
+	_IOR(VEN_IOCTLBASE_ENC, 55, struct venc_ioctl_msg)
+
+/*IOCTL params:SET: InputData - venc_ltrcount, OutputData - NULL.*/
+#define VEN_IOCTL_SET_LTRCOUNT \
+	_IOW(VEN_IOCTLBASE_ENC, 56, struct venc_ioctl_msg)
+/*IOCTL params:GET: InputData - NULL, OutputData - venc_ltrcount.*/
+#define VEN_IOCTL_GET_LTRCOUNT \
+	_IOR(VEN_IOCTLBASE_ENC, 57, struct venc_ioctl_msg)
+
+/*IOCTL params:SET: InputData - venc_ltrperiod, OutputData - NULL.*/
+#define VEN_IOCTL_SET_LTRPERIOD \
+	_IOW(VEN_IOCTLBASE_ENC, 58, struct venc_ioctl_msg)
+/*IOCTL params:GET: InputData - NULL, OutputData - venc_ltrperiod.*/
+#define VEN_IOCTL_GET_LTRPERIOD \
+	_IOR(VEN_IOCTLBASE_ENC, 59, struct venc_ioctl_msg)
+
+/*IOCTL params:SET: InputData - venc_ltruse, OutputData - NULL.*/
+#define VEN_IOCTL_SET_LTRUSE \
+	_IOW(VEN_IOCTLBASE_ENC, 60, struct venc_ioctl_msg)
+/*IOCTL params:GET: InputData - NULL, OutputData - venc_ltruse.*/
+#define VEN_IOCTL_GET_LTRUSE \
+	_IOR(VEN_IOCTLBASE_ENC, 61, struct venc_ioctl_msg)
+
+/*IOCTL params:SET: InputData - venc_ltrmark, OutputData - NULL.*/
+#define VEN_IOCTL_SET_LTRMARK \
+	_IOW(VEN_IOCTLBASE_ENC, 62, struct venc_ioctl_msg)
+/*IOCTL params:GET: InputData - NULL, OutputData - venc_ltrmark.*/
+#define VEN_IOCTL_GET_LTRMARK \
+	_IOR(VEN_IOCTLBASE_ENC, 63, struct venc_ioctl_msg)
+
+
+struct venc_range {
+	unsigned long	max;
+	unsigned long	min;
+	unsigned long	step_size;
+};
+
 struct venc_switch{
 	unsigned char	status;
 };
@@ -622,4 +674,21 @@
 	int alignment;
 };
 
+struct venc_ltrmode {
+	unsigned long   ltr_mode;
+};
+
+struct venc_ltrcount {
+	unsigned long   ltr_count;
+};
+
+struct venc_ltrperiod {
+	unsigned long   ltr_period;
+};
+
+struct venc_ltruse {
+	unsigned long   ltr_id;
+	unsigned long   ltr_frames;
+};
+
 #endif /* _MSM_VIDC_ENC_H_ */
diff --git a/include/media/msm/vcd_property.h b/include/media/msm/vcd_property.h
index 2ce1a88..ed9bffb 100644
--- a/include/media/msm/vcd_property.h
+++ b/include/media/msm/vcd_property.h
@@ -58,7 +58,12 @@
 #define VCD_I_ENABLE_DELIMITER_FLAG (VCD_START_BASE + 0x2A)
 #define VCD_I_ENABLE_VUI_TIMING_INFO (VCD_START_BASE + 0x2B)
 #define VCD_I_H263_PLUSPTYPE (VCD_START_BASE + 0x2C)
-
+#define VCD_I_LTR_MODE (VCD_START_BASE + 0x2D)
+#define VCD_I_LTR_COUNT (VCD_START_BASE + 0x2E)
+#define VCD_I_LTR_PERIOD (VCD_START_BASE + 0x2F)
+#define VCD_I_LTR_USE (VCD_START_BASE + 0x30)
+#define VCD_I_CAPABILITY_LTR_COUNT (VCD_START_BASE + 0x31)
+#define VCD_I_LTR_MARK (VCD_START_BASE + 0x32)
 
 #define VCD_START_REQ      (VCD_START_BASE + 0x1000)
 #define VCD_I_REQ_IFRAME   (VCD_START_REQ + 0x1)
@@ -116,10 +121,11 @@
 #define VCD_METADATA_VC1            0x040
 #define VCD_METADATA_PASSTHROUGH    0x080
 #define VCD_METADATA_ENC_SLICE      0x100
-
+#define VCD_METADATA_LTR_INFO       0x200
 #define VCD_METADATA_EXT_DATA       0x0800
 #define VCD_METADATA_USER_DATA      0x1000
 
+
 struct vcd_property_meta_data_enable {
 	u32 meta_data_enable_flag;
 };
@@ -389,4 +395,34 @@
 	u32 vui_timing_info;
 };
 
+struct vcd_property_range_type {
+	u32 min;
+	u32 max;
+	u32 step_size;
+};
+
+enum vcd_property_ltrmode {
+	VCD_LTR_MODE_DISABLE = 0,
+	VCD_LTR_MODE_MANUAL  = 1,
+	VCD_LTR_MODE_AUTO    = 2,
+	VCD_LTR_MODE_MAX     = 0x7fffffff
+};
+
+struct vcd_property_ltrmode_type {
+	enum vcd_property_ltrmode ltr_mode;
+};
+
+struct vcd_property_ltrcount_type {
+	u32 ltr_count;
+};
+
+struct vcd_property_ltrperiod_type {
+	u32 ltr_period;
+};
+
+struct vcd_property_ltruse_type {
+	u32 ltr_id;
+	u32 ltr_frames;
+};
+
 #endif
diff --git a/include/media/msm/vcd_status.h b/include/media/msm/vcd_status.h
index 7e8ec0b..631501d 100644
--- a/include/media/msm/vcd_status.h
+++ b/include/media/msm/vcd_status.h
@@ -33,6 +33,7 @@
 #define VCD_EVT_IND_RESOURCES_LOST        (VCD_EVT_IND_BASE + 0x4)
 #define VCD_EVT_IND_INFO_OUTPUT_RECONFIG  (VCD_EVT_IND_BASE + 0x5)
 #define VCD_EVT_IND_INFO_FIELD_DROPPED    (VCD_EVT_IND_BASE + 0x6)
+#define VCD_EVT_IND_INFO_LTRUSE_FAILED    (VCD_EVT_IND_BASE + 0x7)
 
 #define VCD_S_SUCCESS           0x0
 
diff --git a/include/media/msm/vidc_type.h b/include/media/msm/vidc_type.h
index d4db0a0..809ec00 100644
--- a/include/media/msm/vidc_type.h
+++ b/include/media/msm/vidc_type.h
@@ -23,8 +23,9 @@
 #include <linux/dma-mapping.h>
 #include <linux/android_pmem.h>
 
-#define DEBUG   0
+#define DDL_MSG_LOG 0
+#define DEBUG 0
 #define VIDC_ENABLE_DBGFS
-
 #define USE_RES_TRACKER
+
 #endif