/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/jiffies.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/bitops.h>
#include <soc/qcom/subsystem_restart.h>
#include <asm/div64.h>
#include "msm_vidc_common.h"
#include "vidc_hfi_api.h"
#include "msm_vidc_debug.h"
#include "msm_vidc_clocks.h"

#define IS_ALREADY_IN_STATE(__p, __d) (\
	(__p >= __d)\
)

#define V4L2_EVENT_SEQ_CHANGED_SUFFICIENT \
		V4L2_EVENT_MSM_VIDC_PORT_SETTINGS_CHANGED_SUFFICIENT
#define V4L2_EVENT_SEQ_CHANGED_INSUFFICIENT \
		V4L2_EVENT_MSM_VIDC_PORT_SETTINGS_CHANGED_INSUFFICIENT
#define V4L2_EVENT_RELEASE_BUFFER_REFERENCE \
		V4L2_EVENT_MSM_VIDC_RELEASE_BUFFER_REFERENCE
#define L_MODE V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY

#define TRIGGER_SSR_LOCK_RETRIES 5

const char *const mpeg_video_vidc_extradata[] = {
	"Extradata none",
	"Extradata MB Quantization",
	"Extradata Interlace Video",
	"Reserved",
	"Reserved",
	"Extradata timestamp",
	"Extradata S3D Frame Packing",
	"Extradata Frame Rate",
	"Extradata Panscan Window",
	"Extradata Recovery point SEI",
	"Extradata Multislice info",
	"Extradata number of concealed MB",
	"Extradata metadata filler",
	"Extradata input crop",
	"Extradata digital zoom",
	"Extradata aspect ratio",
	"Extradata mpeg2 seqdisp",
	"Extradata stream userdata",
	"Extradata frame QP",
	"Extradata frame bits info",
	"Extradata LTR",
	"Extradata macroblock metadata",
	"Extradata VQZip SEI",
	"Extradata YUV Stats",
	"Extradata ROI QP",
	"Extradata output crop",
	"Extradata display colour SEI",
	"Extradata light level SEI",
	"Extradata PQ Info",
	"Extradata display VUI",
	"Extradata vpx color space",
	"Extradata UBWC CR stats info",
};

static void handle_session_error(enum hal_command_response cmd, void *data);
static void msm_vidc_print_running_insts(struct msm_vidc_core *core);

bool msm_comm_turbo_session(struct msm_vidc_inst *inst)
{
	return !!(inst->flags & VIDC_TURBO);
}

static inline bool is_thumbnail_session(struct msm_vidc_inst *inst)
{
	return !!(inst->flags & VIDC_THUMBNAIL);
}

static inline bool is_low_power_session(struct msm_vidc_inst *inst)
{
	return !!(inst->flags & VIDC_LOW_POWER);
}

static inline bool is_realtime_session(struct msm_vidc_inst *inst)
{
	return !!(inst->flags & VIDC_REALTIME);
}

int msm_comm_g_ctrl(struct msm_vidc_inst *inst, struct v4l2_control *ctrl)
{
	return v4l2_g_ctrl(&inst->ctrl_handler, ctrl);
}

int msm_comm_s_ctrl(struct msm_vidc_inst *inst, struct v4l2_control *ctrl)
{
	return v4l2_s_ctrl(NULL, &inst->ctrl_handler, ctrl);
}

int msm_comm_g_ctrl_for_id(struct msm_vidc_inst *inst, int id)
{
	int rc = 0;
	struct v4l2_control ctrl = {
		.id = id,
	};

	rc = msm_comm_g_ctrl(inst, &ctrl);
	return rc ? rc : ctrl.value;
}

static struct v4l2_ctrl **get_super_cluster(struct msm_vidc_inst *inst,
				int num_ctrls)
{
	int c = 0;
	struct v4l2_ctrl **cluster = kmalloc(sizeof(struct v4l2_ctrl *) *
			num_ctrls, GFP_KERNEL);

	if (!cluster || !inst) {
		kfree(cluster);
		return NULL;
	}

	for (c = 0; c < num_ctrls; c++)
		cluster[c] =  inst->ctrls[c];

	return cluster;
}

int msm_comm_hal_to_v4l2(int id, int value)
{
	switch (id) {
		/* H264 */
	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
		switch (value) {
		case HAL_H264_PROFILE_BASELINE:
			return V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE;
		case HAL_H264_PROFILE_CONSTRAINED_BASE:
			return
			V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE;
		case HAL_H264_PROFILE_MAIN:
			return V4L2_MPEG_VIDEO_H264_PROFILE_MAIN;
		case HAL_H264_PROFILE_HIGH:
			return V4L2_MPEG_VIDEO_H264_PROFILE_HIGH;
		case HAL_H264_PROFILE_STEREO_HIGH:
			return V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH;
		case HAL_H264_PROFILE_MULTIVIEW_HIGH:
			return V4L2_MPEG_VIDEO_H264_PROFILE_MULTIVIEW_HIGH;
		case HAL_H264_PROFILE_CONSTRAINED_HIGH:
			return V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_HIGH;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
		switch (value) {
		case HAL_H264_LEVEL_1:
			return V4L2_MPEG_VIDEO_H264_LEVEL_1_0;
		case HAL_H264_LEVEL_1b:
			return V4L2_MPEG_VIDEO_H264_LEVEL_1B;
		case HAL_H264_LEVEL_11:
			return V4L2_MPEG_VIDEO_H264_LEVEL_1_1;
		case HAL_H264_LEVEL_12:
			return V4L2_MPEG_VIDEO_H264_LEVEL_1_2;
		case HAL_H264_LEVEL_13:
			return V4L2_MPEG_VIDEO_H264_LEVEL_1_3;
		case HAL_H264_LEVEL_2:
			return V4L2_MPEG_VIDEO_H264_LEVEL_2_0;
		case HAL_H264_LEVEL_21:
			return V4L2_MPEG_VIDEO_H264_LEVEL_2_1;
		case HAL_H264_LEVEL_22:
			return V4L2_MPEG_VIDEO_H264_LEVEL_2_2;
		case HAL_H264_LEVEL_3:
			return V4L2_MPEG_VIDEO_H264_LEVEL_3_0;
		case HAL_H264_LEVEL_31:
			return V4L2_MPEG_VIDEO_H264_LEVEL_3_1;
		case HAL_H264_LEVEL_32:
			return V4L2_MPEG_VIDEO_H264_LEVEL_3_2;
		case HAL_H264_LEVEL_4:
			return V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
		case HAL_H264_LEVEL_41:
			return V4L2_MPEG_VIDEO_H264_LEVEL_4_1;
		case HAL_H264_LEVEL_42:
			return V4L2_MPEG_VIDEO_H264_LEVEL_4_2;
		case HAL_H264_LEVEL_5:
			return V4L2_MPEG_VIDEO_H264_LEVEL_5_0;
		case HAL_H264_LEVEL_51:
			return V4L2_MPEG_VIDEO_H264_LEVEL_5_1;
		case HAL_H264_LEVEL_52:
			return V4L2_MPEG_VIDEO_H264_LEVEL_5_2;
		default:
			goto unknown_value;
		}

	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
		switch (value) {
		case HAL_H264_ENTROPY_CAVLC:
			return V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC;
		case HAL_H264_ENTROPY_CABAC:
			return V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_HEVC_PROFILE:
		switch (value) {
		case HAL_HEVC_PROFILE_MAIN:
			return V4L2_MPEG_VIDC_VIDEO_HEVC_PROFILE_MAIN;
		case HAL_HEVC_PROFILE_MAIN10:
			return V4L2_MPEG_VIDC_VIDEO_HEVC_PROFILE_MAIN10;
		case HAL_HEVC_PROFILE_MAIN_STILL_PIC:
			return V4L2_MPEG_VIDC_VIDEO_HEVC_PROFILE_MAIN_STILL_PIC;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_HEVC_TIER_LEVEL:
	switch (value) {
	case HAL_HEVC_MAIN_TIER_LEVEL_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_1;
	case HAL_HEVC_MAIN_TIER_LEVEL_2:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_2;
	case HAL_HEVC_MAIN_TIER_LEVEL_2_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_2_1;
	case HAL_HEVC_MAIN_TIER_LEVEL_3:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_3;
	case HAL_HEVC_MAIN_TIER_LEVEL_3_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_3_1;
	case HAL_HEVC_MAIN_TIER_LEVEL_4:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_4;
	case HAL_HEVC_MAIN_TIER_LEVEL_4_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_4_1;
	case HAL_HEVC_MAIN_TIER_LEVEL_5:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_5;
	case HAL_HEVC_MAIN_TIER_LEVEL_5_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_5_1;
	case HAL_HEVC_MAIN_TIER_LEVEL_5_2:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_5_2;
	case HAL_HEVC_MAIN_TIER_LEVEL_6:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_6;
	case HAL_HEVC_MAIN_TIER_LEVEL_6_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_6_1;
	case HAL_HEVC_MAIN_TIER_LEVEL_6_2:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_6_2;
	case HAL_HEVC_HIGH_TIER_LEVEL_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_1;
	case HAL_HEVC_HIGH_TIER_LEVEL_2:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_2;
	case HAL_HEVC_HIGH_TIER_LEVEL_2_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_2_1;
	case HAL_HEVC_HIGH_TIER_LEVEL_3:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_3;
	case HAL_HEVC_HIGH_TIER_LEVEL_3_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_3_1;
	case HAL_HEVC_HIGH_TIER_LEVEL_4:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_4;
	case HAL_HEVC_HIGH_TIER_LEVEL_4_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_4_1;
	case HAL_HEVC_HIGH_TIER_LEVEL_5:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_5;
	case HAL_HEVC_HIGH_TIER_LEVEL_5_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_5_1;
	case HAL_HEVC_HIGH_TIER_LEVEL_5_2:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_5_2;
	case HAL_HEVC_HIGH_TIER_LEVEL_6:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_6;
	case HAL_HEVC_HIGH_TIER_LEVEL_6_1:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_6_1;
	case HAL_HEVC_HIGH_TIER_LEVEL_6_2:
		return V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_6_2;
	case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_UNKNOWN:
		return HAL_HEVC_TIER_LEVEL_UNKNOWN;
	default:
		goto unknown_value;
	}
	case V4L2_CID_MPEG_VIDC_VIDEO_VP8_PROFILE_LEVEL:
		switch (value) {
		case HAL_VP8_LEVEL_VERSION_0:
			return V4L2_MPEG_VIDC_VIDEO_VP8_VERSION_0;
		case HAL_VP8_LEVEL_VERSION_1:
			return V4L2_MPEG_VIDC_VIDEO_VP8_VERSION_1;
		case HAL_VP8_LEVEL_VERSION_2:
			return V4L2_MPEG_VIDC_VIDEO_VP8_VERSION_2;
		case HAL_VP8_LEVEL_VERSION_3:
			return V4L2_MPEG_VIDC_VIDEO_VP8_VERSION_3;
		case HAL_VP8_LEVEL_UNUSED:
			return V4L2_MPEG_VIDC_VIDEO_VP8_UNUSED;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_VP9_PROFILE:
		switch (value) {
		case HAL_VP9_PROFILE_P0:
			return V4L2_MPEG_VIDC_VIDEO_VP9_PROFILE_P0;
		case HAL_VP9_PROFILE_P2_10:
			return V4L2_MPEG_VIDC_VIDEO_VP9_PROFILE_P2_10;
		case HAL_VP9_PROFILE_UNUSED:
			return V4L2_MPEG_VIDC_VIDEO_VP9_PROFILE_UNUSED;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_VP9_LEVEL:
		switch (value) {
		case HAL_VP9_LEVEL_1:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_1;
		case HAL_VP9_LEVEL_11:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_11;
		case HAL_VP9_LEVEL_2:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_2;
		case HAL_VP9_LEVEL_21:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_21;
		case HAL_VP9_LEVEL_3:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_3;
		case HAL_VP9_LEVEL_31:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_31;
		case HAL_VP9_LEVEL_4:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_4;
		case HAL_VP9_LEVEL_41:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_41;
		case HAL_VP9_LEVEL_5:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_5;
		case HAL_VP9_LEVEL_51:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_51;
		case HAL_VP9_LEVEL_UNUSED:
			return V4L2_MPEG_VIDC_VIDEO_VP9_LEVEL_UNUSED;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_MPEG2_PROFILE:
		switch (value) {
		case HAL_MPEG2_PROFILE_SIMPLE:
			return V4L2_MPEG_VIDC_VIDEO_MPEG2_PROFILE_SIMPLE;
		case HAL_MPEG2_PROFILE_MAIN:
			return V4L2_MPEG_VIDC_VIDEO_MPEG2_PROFILE_MAIN;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_MPEG2_LEVEL:
		/* This mapping is not defined properly in V4L2 */
		switch (value) {
		case HAL_MPEG2_LEVEL_LL:
			return V4L2_MPEG_VIDC_VIDEO_MPEG2_LEVEL_0;
		case HAL_MPEG2_LEVEL_ML:
			return V4L2_MPEG_VIDC_VIDEO_MPEG2_LEVEL_1;
		case HAL_MPEG2_LEVEL_HL:
			return V4L2_MPEG_VIDC_VIDEO_MPEG2_LEVEL_2;
		default:
			goto unknown_value;
		}
	}

unknown_value:
	dprintk(VIDC_WARN, "Unknown control (%x, %d)\n", id, value);
	return -EINVAL;
}

int msm_comm_v4l2_to_hal(int id, int value)
{
	switch (id) {
	/* H264 */
	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
		switch (value) {
		case V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE:
			return HAL_H264_PROFILE_BASELINE;
		case V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE:
			return HAL_H264_PROFILE_CONSTRAINED_BASE;
		case V4L2_MPEG_VIDEO_H264_PROFILE_MAIN:
			return HAL_H264_PROFILE_MAIN;
		case V4L2_MPEG_VIDEO_H264_PROFILE_HIGH:
			return HAL_H264_PROFILE_HIGH;
		case V4L2_MPEG_VIDEO_H264_PROFILE_STEREO_HIGH:
			return HAL_H264_PROFILE_STEREO_HIGH;
		case V4L2_MPEG_VIDEO_H264_PROFILE_MULTIVIEW_HIGH:
			return HAL_H264_PROFILE_MULTIVIEW_HIGH;
		case V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_HIGH:
			return HAL_H264_PROFILE_CONSTRAINED_HIGH;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
		switch (value) {
		case V4L2_MPEG_VIDEO_H264_LEVEL_1_0:
			return HAL_H264_LEVEL_1;
		case V4L2_MPEG_VIDEO_H264_LEVEL_1B:
			return HAL_H264_LEVEL_1b;
		case V4L2_MPEG_VIDEO_H264_LEVEL_1_1:
			return HAL_H264_LEVEL_11;
		case V4L2_MPEG_VIDEO_H264_LEVEL_1_2:
			return HAL_H264_LEVEL_12;
		case V4L2_MPEG_VIDEO_H264_LEVEL_1_3:
			return HAL_H264_LEVEL_13;
		case V4L2_MPEG_VIDEO_H264_LEVEL_2_0:
			return HAL_H264_LEVEL_2;
		case V4L2_MPEG_VIDEO_H264_LEVEL_2_1:
			return HAL_H264_LEVEL_21;
		case V4L2_MPEG_VIDEO_H264_LEVEL_2_2:
			return HAL_H264_LEVEL_22;
		case V4L2_MPEG_VIDEO_H264_LEVEL_3_0:
			return HAL_H264_LEVEL_3;
		case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
			return HAL_H264_LEVEL_31;
		case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
			return HAL_H264_LEVEL_32;
		case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
			return HAL_H264_LEVEL_4;
		case V4L2_MPEG_VIDEO_H264_LEVEL_4_1:
			return HAL_H264_LEVEL_41;
		case V4L2_MPEG_VIDEO_H264_LEVEL_4_2:
			return HAL_H264_LEVEL_42;
		case V4L2_MPEG_VIDEO_H264_LEVEL_5_0:
			return HAL_H264_LEVEL_5;
		case V4L2_MPEG_VIDEO_H264_LEVEL_5_1:
			return HAL_H264_LEVEL_51;
		case V4L2_MPEG_VIDEO_H264_LEVEL_5_2:
			return HAL_H264_LEVEL_52;
		case V4L2_MPEG_VIDEO_H264_LEVEL_UNKNOWN:
			return HAL_H264_LEVEL_UNKNOWN;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
		switch (value) {
		case V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CAVLC:
			return HAL_H264_ENTROPY_CAVLC;
		case V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC:
			return HAL_H264_ENTROPY_CABAC;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_H264_CABAC_MODEL:
		switch (value) {
		case V4L2_CID_MPEG_VIDC_VIDEO_H264_CABAC_MODEL_0:
			return HAL_H264_CABAC_MODEL_0;
		case V4L2_CID_MPEG_VIDC_VIDEO_H264_CABAC_MODEL_1:
			return HAL_H264_CABAC_MODEL_1;
		case V4L2_CID_MPEG_VIDC_VIDEO_H264_CABAC_MODEL_2:
			return HAL_H264_CABAC_MODEL_2;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_VP8_PROFILE_LEVEL:
		switch (value) {
		case V4L2_MPEG_VIDC_VIDEO_VP8_VERSION_0:
			return HAL_VP8_LEVEL_VERSION_0;
		case V4L2_MPEG_VIDC_VIDEO_VP8_VERSION_1:
			return HAL_VP8_LEVEL_VERSION_1;
		case V4L2_MPEG_VIDC_VIDEO_VP8_VERSION_2:
			return HAL_VP8_LEVEL_VERSION_2;
		case V4L2_MPEG_VIDC_VIDEO_VP8_VERSION_3:
			return HAL_VP8_LEVEL_VERSION_3;
		case V4L2_MPEG_VIDC_VIDEO_VP8_UNUSED:
			return HAL_VP8_LEVEL_UNUSED;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_HEVC_PROFILE:
		switch (value) {
		case V4L2_MPEG_VIDC_VIDEO_HEVC_PROFILE_MAIN:
			return HAL_HEVC_PROFILE_MAIN;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_PROFILE_MAIN10:
			return HAL_HEVC_PROFILE_MAIN10;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_PROFILE_MAIN_STILL_PIC:
			return HAL_HEVC_PROFILE_MAIN_STILL_PIC;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_HEVC_TIER_LEVEL:
		switch (value) {
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_1:
			return HAL_HEVC_MAIN_TIER_LEVEL_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_2:
			return HAL_HEVC_MAIN_TIER_LEVEL_2;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_2_1:
			return HAL_HEVC_MAIN_TIER_LEVEL_2_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_3:
			return HAL_HEVC_MAIN_TIER_LEVEL_3;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_3_1:
			return HAL_HEVC_MAIN_TIER_LEVEL_3_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_4:
			return HAL_HEVC_MAIN_TIER_LEVEL_4;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_4_1:
			return HAL_HEVC_MAIN_TIER_LEVEL_4_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_5:
			return HAL_HEVC_MAIN_TIER_LEVEL_5;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_5_1:
			return HAL_HEVC_MAIN_TIER_LEVEL_5_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_5_2:
			return HAL_HEVC_MAIN_TIER_LEVEL_5_2;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_6:
			return HAL_HEVC_MAIN_TIER_LEVEL_6;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_6_1:
			return HAL_HEVC_MAIN_TIER_LEVEL_6_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_MAIN_TIER_LEVEL_6_2:
			return HAL_HEVC_MAIN_TIER_LEVEL_6_2;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_1:
			return HAL_HEVC_HIGH_TIER_LEVEL_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_2:
			return HAL_HEVC_HIGH_TIER_LEVEL_2;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_2_1:
			return HAL_HEVC_HIGH_TIER_LEVEL_2_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_3:
			return HAL_HEVC_HIGH_TIER_LEVEL_3;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_3_1:
			return HAL_HEVC_HIGH_TIER_LEVEL_3_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_4:
			return HAL_HEVC_HIGH_TIER_LEVEL_4;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_4_1:
			return HAL_HEVC_HIGH_TIER_LEVEL_4_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_5:
			return HAL_HEVC_HIGH_TIER_LEVEL_5;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_5_1:
			return HAL_HEVC_HIGH_TIER_LEVEL_5_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_5_2:
			return HAL_HEVC_HIGH_TIER_LEVEL_5_2;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_6:
			return HAL_HEVC_HIGH_TIER_LEVEL_6;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_6_1:
			return HAL_HEVC_HIGH_TIER_LEVEL_6_1;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_HIGH_TIER_LEVEL_6_2:
			return HAL_HEVC_HIGH_TIER_LEVEL_6_2;
		case V4L2_MPEG_VIDC_VIDEO_HEVC_LEVEL_UNKNOWN:
			return HAL_HEVC_TIER_LEVEL_UNKNOWN;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_TME_PROFILE:
		switch (value) {
		case V4L2_MPEG_VIDC_VIDEO_TME_PROFILE_0:
			return HAL_TME_PROFILE_0;
		case V4L2_MPEG_VIDC_VIDEO_TME_PROFILE_1:
			return HAL_TME_PROFILE_1;
		case V4L2_MPEG_VIDC_VIDEO_TME_PROFILE_2:
			return HAL_TME_PROFILE_2;
		case V4L2_MPEG_VIDC_VIDEO_TME_PROFILE_3:
			return HAL_TME_PROFILE_3;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_TME_LEVEL:
		switch (value) {
		case V4L2_MPEG_VIDC_VIDEO_TME_LEVEL_INTEGER:
			return HAL_TME_LEVEL_INTEGER;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_ROTATION:
		switch (value) {
		case V4L2_CID_MPEG_VIDC_VIDEO_ROTATION_NONE:
			return HAL_ROTATE_NONE;
		case V4L2_CID_MPEG_VIDC_VIDEO_ROTATION_90:
			return HAL_ROTATE_90;
		case V4L2_CID_MPEG_VIDC_VIDEO_ROTATION_180:
			return HAL_ROTATE_180;
		case V4L2_CID_MPEG_VIDC_VIDEO_ROTATION_270:
			return HAL_ROTATE_270;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_FLIP:
		switch (value) {
		case V4L2_CID_MPEG_VIDC_VIDEO_FLIP_NONE:
			return HAL_FLIP_NONE;
		case V4L2_CID_MPEG_VIDC_VIDEO_FLIP_HORI:
			return HAL_FLIP_HORIZONTAL;
		case V4L2_CID_MPEG_VIDC_VIDEO_FLIP_VERT:
			return HAL_FLIP_VERTICAL;
		case V4L2_CID_MPEG_VIDC_VIDEO_FLIP_BOTH:
			return HAL_FLIP_BOTH;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
		switch (value) {
		case V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED:
			return HAL_H264_DB_MODE_DISABLE;
		case V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED:
			return HAL_H264_DB_MODE_ALL_BOUNDARY;
		case L_MODE:
			return HAL_H264_DB_MODE_SKIP_SLICE_BOUNDARY;
		default:
			goto unknown_value;
		}
	case V4L2_CID_MPEG_VIDC_VIDEO_IFRAME_SIZE_TYPE:
		switch (value) {
		case V4L2_CID_MPEG_VIDC_VIDEO_IFRAME_SIZE_DEFAULT:
			return HAL_IFRAMESIZE_TYPE_DEFAULT;
		case V4L2_CID_MPEG_VIDC_VIDEO_IFRAME_SIZE_MEDIUM:
			return HAL_IFRAMESIZE_TYPE_MEDIUM;
		case V4L2_CID_MPEG_VIDC_VIDEO_IFRAME_SIZE_HUGE:
			return HAL_IFRAMESIZE_TYPE_HUGE;
		case V4L2_CID_MPEG_VIDC_VIDEO_IFRAME_SIZE_UNLIMITED:
			return HAL_IFRAMESIZE_TYPE_UNLIMITED;
		default:
			goto unknown_value;
		}
	}

unknown_value:
	dprintk(VIDC_WARN, "Unknown control (%x, %d)\n", id, value);
	return -EINVAL;
}

int msm_comm_get_v4l2_profile(int fourcc, int profile)
{
	switch (fourcc) {
	case V4L2_PIX_FMT_H264:
		return msm_comm_hal_to_v4l2(
			V4L2_CID_MPEG_VIDEO_H264_PROFILE,
			profile);
	case V4L2_PIX_FMT_HEVC:
		return msm_comm_hal_to_v4l2(
			V4L2_CID_MPEG_VIDC_VIDEO_HEVC_PROFILE,
			profile);
	case V4L2_PIX_FMT_VP8:
	case V4L2_PIX_FMT_VP9:
	case V4L2_PIX_FMT_MPEG2:
		return 0;
	default:
		dprintk(VIDC_WARN, "Unknown codec id %x\n", fourcc);
		return 0;
	}
}

int msm_comm_get_v4l2_level(int fourcc, int level)
{
	switch (fourcc) {
	case V4L2_PIX_FMT_H264:
		return msm_comm_hal_to_v4l2(
			V4L2_CID_MPEG_VIDEO_H264_LEVEL,
			level);
	case V4L2_PIX_FMT_HEVC:
		return msm_comm_hal_to_v4l2(
			V4L2_CID_MPEG_VIDC_VIDEO_HEVC_TIER_LEVEL,
			level);
	case V4L2_PIX_FMT_VP8:
		return msm_comm_hal_to_v4l2(
			V4L2_CID_MPEG_VIDC_VIDEO_VP8_PROFILE_LEVEL,
			level);
	case V4L2_PIX_FMT_VP9:
	case V4L2_PIX_FMT_MPEG2:
		return 0;
	default:
		dprintk(VIDC_WARN, "Unknown codec id %x\n", fourcc);
		return 0;
	}
}

int msm_comm_ctrl_init(struct msm_vidc_inst *inst,
		struct msm_vidc_ctrl *drv_ctrls, u32 num_ctrls,
		const struct v4l2_ctrl_ops *ctrl_ops)
{
	int idx = 0;
	struct v4l2_ctrl_config ctrl_cfg = {0};
	int ret_val = 0;

	if (!inst || !drv_ctrls || !ctrl_ops || !num_ctrls) {
		dprintk(VIDC_ERR, "%s - invalid input\n", __func__);
		return -EINVAL;
	}

	inst->ctrls = kcalloc(num_ctrls, sizeof(struct v4l2_ctrl *),
				GFP_KERNEL);
	if (!inst->ctrls) {
		dprintk(VIDC_ERR, "%s - failed to allocate ctrl\n", __func__);
		return -ENOMEM;
	}

	ret_val = v4l2_ctrl_handler_init(&inst->ctrl_handler, num_ctrls);

	if (ret_val) {
		dprintk(VIDC_ERR, "CTRL ERR: Control handler init failed, %d\n",
				inst->ctrl_handler.error);
		return ret_val;
	}

	for (; idx < num_ctrls; idx++) {
		struct v4l2_ctrl *ctrl = NULL;

		if (IS_PRIV_CTRL(drv_ctrls[idx].id)) {
			/*add private control*/
			ctrl_cfg.def = drv_ctrls[idx].default_value;
			ctrl_cfg.flags = 0;
			ctrl_cfg.id = drv_ctrls[idx].id;
			ctrl_cfg.max = drv_ctrls[idx].maximum;
			ctrl_cfg.min = drv_ctrls[idx].minimum;
			ctrl_cfg.menu_skip_mask =
				drv_ctrls[idx].menu_skip_mask;
			ctrl_cfg.name = drv_ctrls[idx].name;
			ctrl_cfg.ops = ctrl_ops;
			ctrl_cfg.step = drv_ctrls[idx].step;
			ctrl_cfg.type = drv_ctrls[idx].type;
			ctrl_cfg.qmenu = drv_ctrls[idx].qmenu;

			ctrl = v4l2_ctrl_new_custom(&inst->ctrl_handler,
					&ctrl_cfg, NULL);
		} else {
			if (drv_ctrls[idx].type == V4L2_CTRL_TYPE_MENU) {
				ctrl = v4l2_ctrl_new_std_menu(
					&inst->ctrl_handler,
					ctrl_ops,
					drv_ctrls[idx].id,
					drv_ctrls[idx].maximum,
					drv_ctrls[idx].menu_skip_mask,
					drv_ctrls[idx].default_value);
			} else {
				ctrl = v4l2_ctrl_new_std(&inst->ctrl_handler,
					ctrl_ops,
					drv_ctrls[idx].id,
					drv_ctrls[idx].minimum,
					drv_ctrls[idx].maximum,
					drv_ctrls[idx].step,
					drv_ctrls[idx].default_value);
			}
		}

		if (!ctrl) {
			dprintk(VIDC_ERR, "%s - invalid ctrl %s\n", __func__,
				 drv_ctrls[idx].name);
			return -EINVAL;
		}

		ret_val = inst->ctrl_handler.error;
		if (ret_val) {
			dprintk(VIDC_ERR,
				"Error adding ctrl (%s) to ctrl handle, %d\n",
				drv_ctrls[idx].name, inst->ctrl_handler.error);
			return ret_val;
		}

		ctrl->flags |= drv_ctrls[idx].flags;
		inst->ctrls[idx] = ctrl;
	}

	/* Construct a super cluster of all controls */
	inst->cluster = get_super_cluster(inst, num_ctrls);
	if (!inst->cluster) {
		dprintk(VIDC_WARN,
			"Failed to setup super cluster\n");
		return -EINVAL;
	}

	v4l2_ctrl_cluster(num_ctrls, inst->cluster);

	return ret_val;
}

int msm_comm_ctrl_deinit(struct msm_vidc_inst *inst)
{
	if (!inst) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	kfree(inst->ctrls);
	kfree(inst->cluster);
	v4l2_ctrl_handler_free(&inst->ctrl_handler);

	return 0;
}

enum multi_stream msm_comm_get_stream_output_mode(struct msm_vidc_inst *inst)
{
	switch (msm_comm_g_ctrl_for_id(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_STREAM_OUTPUT_MODE)) {
		case V4L2_CID_MPEG_VIDC_VIDEO_STREAM_OUTPUT_SECONDARY:
			return HAL_VIDEO_DECODER_SECONDARY;
		case V4L2_CID_MPEG_VIDC_VIDEO_STREAM_OUTPUT_PRIMARY:
		default:
			return HAL_VIDEO_DECODER_PRIMARY;
	}
}

static int msm_comm_get_mbs_per_sec(struct msm_vidc_inst *inst)
{
	int output_port_mbs, capture_port_mbs;
	int fps;

	output_port_mbs = inst->in_reconfig ?
			NUM_MBS_PER_FRAME(inst->reconfig_width,
				inst->reconfig_height) :
			NUM_MBS_PER_FRAME(inst->prop.width[OUTPUT_PORT],
				inst->prop.height[OUTPUT_PORT]);

	capture_port_mbs = NUM_MBS_PER_FRAME(inst->prop.width[CAPTURE_PORT],
		inst->prop.height[CAPTURE_PORT]);

	if (inst->clk_data.operating_rate) {
		fps = (inst->clk_data.operating_rate >> 16) ?
			inst->clk_data.operating_rate >> 16 : 1;
		/*
		 * Check if operating rate is less than fps.
		 * If Yes, then use fps to scale clocks
		 */
		fps = fps > inst->prop.fps ? fps : inst->prop.fps;
		return max(output_port_mbs, capture_port_mbs) * fps;
	} else {
		return max(output_port_mbs, capture_port_mbs) * inst->prop.fps;
	}
}

int msm_comm_get_inst_load(struct msm_vidc_inst *inst,
		enum load_calc_quirks quirks)
{
	int load = 0;

	mutex_lock(&inst->lock);

	if (!(inst->state >= MSM_VIDC_OPEN_DONE &&
		inst->state < MSM_VIDC_STOP_DONE))
		goto exit;

	load = msm_comm_get_mbs_per_sec(inst);

	if (is_thumbnail_session(inst)) {
		if (quirks & LOAD_CALC_IGNORE_THUMBNAIL_LOAD)
			load = 0;
	}

	if (msm_comm_turbo_session(inst)) {
		if (!(quirks & LOAD_CALC_IGNORE_TURBO_LOAD))
			load = inst->core->resources.max_load;
	}

	/*  Clock and Load calculations for REALTIME/NON-REALTIME
	 *                        OPERATING RATE SET/NO OPERATING RATE SET
	 *
	 *                 | OPERATING RATE SET   | OPERATING RATE NOT SET |
	 * ----------------|--------------------- |------------------------|
	 * REALTIME        | load = res * op_rate |  load = res * fps      |
	 *                 | clk  = res * op_rate |  clk  = res * fps      |
	 * ----------------|----------------------|------------------------|
	 * NON-REALTIME    | load = res * 1 fps   |  load = res * 1 fps    |
	 *                 | clk  = res * op_rate |  clk  = res * fps      |
	 * ----------------|----------------------|------------------------|
	 */

	if (!is_realtime_session(inst) &&
		(quirks & LOAD_CALC_IGNORE_NON_REALTIME_LOAD)) {
		if (!inst->prop.fps) {
			dprintk(VIDC_INFO, "instance:%pK fps = 0\n", inst);
			load = 0;
		} else {
			load = msm_comm_get_mbs_per_sec(inst) / inst->prop.fps;
		}
	}

exit:
	mutex_unlock(&inst->lock);
	return load;
}

int msm_comm_get_inst_load_per_core(struct msm_vidc_inst *inst,
		enum load_calc_quirks quirks)
{
	int load = msm_comm_get_inst_load(inst, quirks);

	if (inst->clk_data.core_id == VIDC_CORE_ID_3)
		load = load / 2;

	return load;
}

int msm_comm_get_load(struct msm_vidc_core *core,
	enum session_type type, enum load_calc_quirks quirks)
{
	struct msm_vidc_inst *inst = NULL;
	int num_mbs_per_sec = 0;

	if (!core) {
		dprintk(VIDC_ERR, "Invalid args: %pK\n", core);
		return -EINVAL;
	}

	mutex_lock(&core->lock);
	list_for_each_entry(inst, &core->instances, list) {
		if (inst->session_type != type)
			continue;

		num_mbs_per_sec += msm_comm_get_inst_load(inst, quirks);
	}
	mutex_unlock(&core->lock);

	return num_mbs_per_sec;
}

enum hal_domain get_hal_domain(int session_type)
{
	enum hal_domain domain;

	switch (session_type) {
	case MSM_VIDC_ENCODER:
		domain = HAL_VIDEO_DOMAIN_ENCODER;
		break;
	case MSM_VIDC_DECODER:
		domain = HAL_VIDEO_DOMAIN_DECODER;
		break;
	default:
		dprintk(VIDC_ERR, "Wrong domain\n");
		domain = HAL_UNUSED_DOMAIN;
		break;
	}

	return domain;
}

enum hal_video_codec get_hal_codec(int fourcc)
{
	enum hal_video_codec codec;

	switch (fourcc) {
	case V4L2_PIX_FMT_H264:
	case V4L2_PIX_FMT_H264_NO_SC:
		codec = HAL_VIDEO_CODEC_H264;
		break;
	case V4L2_PIX_FMT_H264_MVC:
		codec = HAL_VIDEO_CODEC_MVC;
		break;
	case V4L2_PIX_FMT_MPEG1:
		codec = HAL_VIDEO_CODEC_MPEG1;
		break;
	case V4L2_PIX_FMT_MPEG2:
		codec = HAL_VIDEO_CODEC_MPEG2;
		break;
	case V4L2_PIX_FMT_VP8:
		codec = HAL_VIDEO_CODEC_VP8;
		break;
	case V4L2_PIX_FMT_VP9:
		codec = HAL_VIDEO_CODEC_VP9;
		break;
	case V4L2_PIX_FMT_HEVC:
		codec = HAL_VIDEO_CODEC_HEVC;
		break;
	case V4L2_PIX_FMT_TME:
		codec = HAL_VIDEO_CODEC_TME;
		break;
	default:
		dprintk(VIDC_ERR, "Wrong codec: %d\n", fourcc);
		codec = HAL_UNUSED_CODEC;
		break;
	}

	return codec;
}

enum hal_uncompressed_format msm_comm_get_hal_uncompressed(int fourcc)
{
	enum hal_uncompressed_format format = HAL_UNUSED_COLOR;

	switch (fourcc) {
	case V4L2_PIX_FMT_NV12:
		format = HAL_COLOR_FORMAT_NV12;
		break;
	case V4L2_PIX_FMT_NV21:
		format = HAL_COLOR_FORMAT_NV21;
		break;
	case V4L2_PIX_FMT_NV12_UBWC:
		format = HAL_COLOR_FORMAT_NV12_UBWC;
		break;
	case V4L2_PIX_FMT_NV12_TP10_UBWC:
		format = HAL_COLOR_FORMAT_NV12_TP10_UBWC;
		break;
	case V4L2_PIX_FMT_SDE_Y_CBCR_H2V2_P010_VENUS:
		format = HAL_COLOR_FORMAT_P010;
		break;
	default:
		format = HAL_UNUSED_COLOR;
		break;
	}

	return format;
}

struct msm_vidc_core *get_vidc_core(int core_id)
{
	struct msm_vidc_core *core;
	int found = 0;

	if (core_id > MSM_VIDC_CORES_MAX) {
		dprintk(VIDC_ERR, "Core id = %d is greater than max = %d\n",
			core_id, MSM_VIDC_CORES_MAX);
		return NULL;
	}
	mutex_lock(&vidc_driver->lock);
	list_for_each_entry(core, &vidc_driver->cores, list) {
		if (core->id == core_id) {
			found = 1;
			break;
		}
	}
	mutex_unlock(&vidc_driver->lock);
	if (found)
		return core;
	return NULL;
}

const struct msm_vidc_format *msm_comm_get_pixel_fmt_index(
	const struct msm_vidc_format fmt[], int size, int index, int fmt_type)
{
	int i, k = 0;

	if (!fmt || index < 0) {
		dprintk(VIDC_ERR, "Invalid inputs, fmt = %pK, index = %d\n",
						fmt, index);
		return NULL;
	}
	for (i = 0; i < size; i++) {
		if (fmt[i].type != fmt_type)
			continue;
		if (k == index)
			break;
		k++;
	}
	if (i == size) {
		dprintk(VIDC_INFO, "Format not found\n");
		return NULL;
	}
	return &fmt[i];
}
struct msm_vidc_format *msm_comm_get_pixel_fmt_fourcc(
	struct msm_vidc_format fmt[], int size, int fourcc, int fmt_type)
{
	int i;

	if (!fmt) {
		dprintk(VIDC_ERR, "Invalid inputs, fmt = %pK\n", fmt);
		return NULL;
	}
	for (i = 0; i < size; i++) {
		if (fmt[i].fourcc == fourcc)
			break;
	}
	if (i == size) {
		dprintk(VIDC_INFO, "Format not found\n");
		return NULL;
	}
	return &fmt[i];
}

struct buf_queue *msm_comm_get_vb2q(
		struct msm_vidc_inst *inst, enum v4l2_buf_type type)
{
	if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
		return &inst->bufq[CAPTURE_PORT];
	if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
		return &inst->bufq[OUTPUT_PORT];
	return NULL;
}

static void handle_sys_init_done(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_core *core;
	struct vidc_hal_sys_init_done *sys_init_msg;
	u32 index;

	if (!IS_HAL_SYS_CMD(cmd)) {
		dprintk(VIDC_ERR, "%s - invalid cmd\n", __func__);
		return;
	}

	index = SYS_MSG_INDEX(cmd);

	if (!response) {
		dprintk(VIDC_ERR,
			"Failed to get valid response for sys init\n");
		return;
	}
	core = get_vidc_core(response->device_id);
	if (!core) {
		dprintk(VIDC_ERR, "Wrong device_id received\n");
		return;
	}
	sys_init_msg = &response->data.sys_init_done;
	if (!sys_init_msg) {
		dprintk(VIDC_ERR, "sys_init_done message not proper\n");
		return;
	}

	core->enc_codec_supported = sys_init_msg->enc_codec_supported;
	core->dec_codec_supported = sys_init_msg->dec_codec_supported;

	/* This should come from sys_init_done */
	core->resources.max_inst_count =
		sys_init_msg->max_sessions_supported ?
		min_t(u32, sys_init_msg->max_sessions_supported,
		MAX_SUPPORTED_INSTANCES) : MAX_SUPPORTED_INSTANCES;

	core->resources.max_secure_inst_count =
		core->resources.max_secure_inst_count ?
		core->resources.max_secure_inst_count :
		core->resources.max_inst_count;

	if (core->id == MSM_VIDC_CORE_VENUS &&
		(core->dec_codec_supported & HAL_VIDEO_CODEC_H264))
		core->dec_codec_supported |=
			HAL_VIDEO_CODEC_MVC;

	core->codec_count = sys_init_msg->codec_count;
	memcpy(core->capabilities, sys_init_msg->capabilities,
		sys_init_msg->codec_count * sizeof(struct msm_vidc_capability));

	dprintk(VIDC_DBG,
		"%s: supported_codecs[%d]: enc = %#x, dec = %#x\n",
		__func__, core->codec_count, core->enc_codec_supported,
		core->dec_codec_supported);

	complete(&(core->completions[index]));
}

static void put_inst_helper(struct kref *kref)
{
	struct msm_vidc_inst *inst = container_of(kref,
			struct msm_vidc_inst, kref);

	msm_vidc_destroy(inst);
}

static void put_inst(struct msm_vidc_inst *inst)
{
	if (!inst)
		return;

	kref_put(&inst->kref, put_inst_helper);
}

static struct msm_vidc_inst *get_inst(struct msm_vidc_core *core,
		void *session_id)
{
	struct msm_vidc_inst *inst = NULL;
	bool matches = false;

	if (!core || !session_id)
		return NULL;

	mutex_lock(&core->lock);
	/*
	 * This is as good as !list_empty(!inst->list), but at this point
	 * we don't really know if inst was kfree'd via close syscall before
	 * hardware could respond.  So manually walk thru the list of active
	 * sessions
	 */
	list_for_each_entry(inst, &core->instances, list) {
		if (inst == session_id) {
			/*
			 * Even if the instance is valid, we really shouldn't
			 * be receiving or handling callbacks when we've deleted
			 * our session with HFI
			 */
			matches = !!inst->session;
			break;
		}
	}

	/*
	 * kref_* is atomic_int backed, so no need for inst->lock.  But we can
	 * always acquire inst->lock and release it in put_inst for a stronger
	 * locking system.
	 */
	inst = (matches && kref_get_unless_zero(&inst->kref)) ? inst : NULL;
	mutex_unlock(&core->lock);

	return inst;
}

static void handle_session_release_buf_done(enum hal_command_response cmd,
	void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_inst *inst;
	struct internal_buf *buf;
	struct list_head *ptr, *next;
	struct hal_buffer_info *buffer;
	u32 buf_found = false;
	u32 address;

	if (!response) {
		dprintk(VIDC_ERR, "Invalid release_buf_done response\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	buffer = &response->data.buffer_info;
	address = buffer->buffer_addr;

	mutex_lock(&inst->scratchbufs.lock);
	list_for_each_safe(ptr, next, &inst->scratchbufs.list) {
		buf = list_entry(ptr, struct internal_buf, list);
		if (address == buf->smem.device_addr) {
			dprintk(VIDC_DBG, "releasing scratch: %x\n",
					buf->smem.device_addr);
			buf_found = true;
		}
	}
	mutex_unlock(&inst->scratchbufs.lock);

	mutex_lock(&inst->persistbufs.lock);
	list_for_each_safe(ptr, next, &inst->persistbufs.list) {
		buf = list_entry(ptr, struct internal_buf, list);
		if (address == buf->smem.device_addr) {
			dprintk(VIDC_DBG, "releasing persist: %x\n",
					buf->smem.device_addr);
			buf_found = true;
		}
	}
	mutex_unlock(&inst->persistbufs.lock);

	if (!buf_found)
		dprintk(VIDC_ERR, "invalid buffer received from firmware");
	if (IS_HAL_SESSION_CMD(cmd))
		complete(&inst->completions[SESSION_MSG_INDEX(cmd)]);
	else
		dprintk(VIDC_ERR, "Invalid inst cmd response: %d\n", cmd);

	put_inst(inst);
}

static void handle_sys_release_res_done(
		enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_core *core;

	if (!response) {
		dprintk(VIDC_ERR,
			"Failed to get valid response for sys init\n");
		return;
	}
	core = get_vidc_core(response->device_id);
	if (!core) {
		dprintk(VIDC_ERR, "Wrong device_id received\n");
		return;
	}
	complete(&core->completions[
			SYS_MSG_INDEX(HAL_SYS_RELEASE_RESOURCE_DONE)]);
}

static void change_inst_state(struct msm_vidc_inst *inst,
	enum instance_state state)
{
	if (!inst) {
		dprintk(VIDC_ERR, "Invalid parameter %s\n", __func__);
		return;
	}
	mutex_lock(&inst->lock);
	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_DBG,
			"Inst: %pK is in bad state can't change state to %d\n",
			inst, state);
		goto exit;
	}
	dprintk(VIDC_DBG, "Moved inst: %pK from state: %d to state: %d\n",
		   inst, inst->state, state);
	inst->state = state;
exit:
	mutex_unlock(&inst->lock);
}

static int signal_session_msg_receipt(enum hal_command_response cmd,
		struct msm_vidc_inst *inst)
{
	if (!inst) {
		dprintk(VIDC_ERR, "Invalid(%pK) instance id\n", inst);
		return -EINVAL;
	}
	if (IS_HAL_SESSION_CMD(cmd)) {
		complete(&inst->completions[SESSION_MSG_INDEX(cmd)]);
	} else {
		dprintk(VIDC_ERR, "Invalid inst cmd response: %d\n", cmd);
		return -EINVAL;
	}
	return 0;
}

static int wait_for_sess_signal_receipt(struct msm_vidc_inst *inst,
	enum hal_command_response cmd)
{
	int rc = 0;
	struct hfi_device *hdev;

	if (!IS_HAL_SESSION_CMD(cmd)) {
		dprintk(VIDC_ERR, "Invalid inst cmd response: %d\n", cmd);
		return -EINVAL;
	}
	hdev = (struct hfi_device *)(inst->core->device);
	rc = wait_for_completion_timeout(
		&inst->completions[SESSION_MSG_INDEX(cmd)],
		msecs_to_jiffies(
			inst->core->resources.msm_vidc_hw_rsp_timeout));
	if (!rc) {
		dprintk(VIDC_ERR, "Wait interrupted or timed out: %d\n",
				SESSION_MSG_INDEX(cmd));
		msm_comm_kill_session(inst);
		rc = -EIO;
	} else {
		rc = 0;
	}
	return rc;
}

static int wait_for_state(struct msm_vidc_inst *inst,
	enum instance_state flipped_state,
	enum instance_state desired_state,
	enum hal_command_response hal_cmd)
{
	int rc = 0;

	if (IS_ALREADY_IN_STATE(flipped_state, desired_state)) {
		dprintk(VIDC_INFO, "inst: %pK is already in state: %d\n",
						inst, inst->state);
		goto err_same_state;
	}
	dprintk(VIDC_DBG, "Waiting for hal_cmd: %d\n", hal_cmd);
	rc = wait_for_sess_signal_receipt(inst, hal_cmd);
	if (!rc)
		change_inst_state(inst, desired_state);
err_same_state:
	return rc;
}

void msm_vidc_queue_v4l2_event(struct msm_vidc_inst *inst, int event_type)
{
	struct v4l2_event event = {.id = 0, .type = event_type};

	v4l2_event_queue_fh(&inst->event_handler, &event);
}

static void msm_comm_generate_max_clients_error(struct msm_vidc_inst *inst)
{
	enum hal_command_response cmd = HAL_SESSION_ERROR;
	struct msm_vidc_cb_cmd_done response = {0};

	if (!inst) {
		dprintk(VIDC_ERR, "%s: invalid input parameters\n", __func__);
		return;
	}
	dprintk(VIDC_ERR, "%s: Too many clients\n", __func__);
	response.session_id = inst;
	response.status = VIDC_ERR_MAX_CLIENTS;
	handle_session_error(cmd, (void *)&response);
}

static void print_cap(const char *type,
		struct hal_capability_supported *cap)
{
	dprintk(VIDC_DBG,
		"%-24s: %-8d %-8d %-8d\n",
		type, cap->min, cap->max, cap->step_size);
}

static int msm_vidc_comm_update_ctrl(struct msm_vidc_inst *inst,
	u32 id, struct hal_capability_supported *capability)
{
	struct v4l2_ctrl *ctrl = NULL;
	int rc = 0;

	ctrl = v4l2_ctrl_find(&inst->ctrl_handler, id);
	if (ctrl) {
		v4l2_ctrl_modify_range(ctrl, capability->min,
				capability->max, ctrl->step,
				ctrl->default_value);
		dprintk(VIDC_DBG,
			"%s: Updated Range = %lld --> %lld Def value = %lld\n",
			ctrl->name, ctrl->minimum, ctrl->maximum,
			ctrl->default_value);
	} else {
		dprintk(VIDC_ERR,
			"Failed to find Conrol %d\n", id);
		rc = -EINVAL;
	}

	return rc;
	}

static void msm_vidc_comm_update_ctrl_limits(struct msm_vidc_inst *inst)
{
	if (inst->session_type == MSM_VIDC_ENCODER) {
		if (get_hal_codec(inst->fmts[CAPTURE_PORT].fourcc) ==
			HAL_VIDEO_CODEC_TME)
			return;
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_HYBRID_HIERP_MODE,
				&inst->capability.hier_p_hybrid);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_HIER_B_NUM_LAYERS,
				&inst->capability.hier_b);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_HIER_P_NUM_LAYERS,
				&inst->capability.hier_p);
		msm_vidc_comm_update_ctrl(inst, V4L2_CID_MPEG_VIDEO_BITRATE,
				&inst->capability.bitrate);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VENC_PARAM_LAYER_BITRATE,
				&inst->capability.bitrate);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
				&inst->capability.peakbitrate);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_I_FRAME_QP,
				&inst->capability.i_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_P_FRAME_QP,
				&inst->capability.p_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_B_FRAME_QP,
				&inst->capability.b_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_I_FRAME_QP_MIN,
				&inst->capability.i_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_P_FRAME_QP_MIN,
				&inst->capability.p_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_B_FRAME_QP_MIN,
				&inst->capability.b_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_I_FRAME_QP_MAX,
				&inst->capability.i_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_P_FRAME_QP_MAX,
				&inst->capability.p_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_B_FRAME_QP_MAX,
				&inst->capability.b_qp);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_BLUR_WIDTH,
				&inst->capability.blur_width);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_BLUR_HEIGHT,
				&inst->capability.blur_height);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES,
				&inst->capability.slice_bytes);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB,
				&inst->capability.slice_mbs);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_LTRCOUNT,
				&inst->capability.ltr_count);
		msm_vidc_comm_update_ctrl(inst,
				V4L2_CID_MPEG_VIDC_VIDEO_NUM_B_FRAMES,
				&inst->capability.bframe);
	}
	msm_vidc_comm_update_ctrl(inst,
		V4L2_CID_MPEG_VIDC_VIDEO_FRAME_RATE,
		&inst->capability.frame_rate);
}

static void handle_session_init_done(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_inst *inst = NULL;
	struct msm_vidc_capability *capability = NULL;
	struct hfi_device *hdev;
	struct msm_vidc_core *core;
	u32 i, codec;

	if (!response) {
		dprintk(VIDC_ERR,
				"Failed to get valid response for session init\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
		response->session_id);

	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	if (response->status) {
		dprintk(VIDC_ERR,
			"Session init response from FW : %#x\n",
			response->status);
		if (response->status == VIDC_ERR_MAX_CLIENTS)
			msm_comm_generate_max_clients_error(inst);
		else
			msm_comm_generate_session_error(inst);

		signal_session_msg_receipt(cmd, inst);
		put_inst(inst);
		return;
	}

	core = inst->core;
	hdev = inst->core->device;
	codec = inst->session_type == MSM_VIDC_DECODER ?
			inst->fmts[OUTPUT_PORT].fourcc :
			inst->fmts[CAPTURE_PORT].fourcc;

	/* check if capabilities are available for this session */
	for (i = 0; i < VIDC_MAX_SESSIONS; i++) {
		if (core->capabilities[i].codec ==
				get_hal_codec(codec) &&
			core->capabilities[i].domain ==
				get_hal_domain(inst->session_type)) {
			capability = &core->capabilities[i];
			break;
		}
	}

	if (capability) {
		dprintk(VIDC_DBG,
			"%s: capabilities for codec 0x%x, domain %#x\n",
			__func__, capability->codec, capability->domain);
		memcpy(&inst->capability, capability,
			sizeof(struct msm_vidc_capability));
	} else {
		dprintk(VIDC_ERR,
			"Watch out : Some property may fail inst %pK\n", inst);
		dprintk(VIDC_ERR,
			"Caps N/A for codec 0x%x, domain %#x\n",
			inst->capability.codec, inst->capability.domain);
	}
	inst->capability.pixelprocess_capabilities =
		call_hfi_op(hdev, get_core_capabilities, hdev->hfi_device_data);

	dprintk(VIDC_DBG,
		"Capability type : min      max      step size\n");
	print_cap("width", &inst->capability.width);
	print_cap("height", &inst->capability.height);
	print_cap("mbs_per_frame", &inst->capability.mbs_per_frame);
	print_cap("mbs_per_sec", &inst->capability.mbs_per_sec);
	print_cap("frame_rate", &inst->capability.frame_rate);
	print_cap("bitrate", &inst->capability.bitrate);
	print_cap("peak_bitrate", &inst->capability.peakbitrate);
	print_cap("scale_x", &inst->capability.scale_x);
	print_cap("scale_y", &inst->capability.scale_y);
	print_cap("hier_p", &inst->capability.hier_p);
	print_cap("ltr_count", &inst->capability.ltr_count);
	print_cap("bframe", &inst->capability.bframe);
	print_cap("secure_output2_threshold",
		&inst->capability.secure_output2_threshold);
	print_cap("hier_b", &inst->capability.hier_b);
	print_cap("lcu_size", &inst->capability.lcu_size);
	print_cap("hier_p_hybrid", &inst->capability.hier_p_hybrid);
	print_cap("mbs_per_sec_low_power",
		&inst->capability.mbs_per_sec_power_save);
	print_cap("extradata", &inst->capability.extradata);
	print_cap("profile", &inst->capability.profile);
	print_cap("level", &inst->capability.level);
	print_cap("i_qp", &inst->capability.i_qp);
	print_cap("p_qp", &inst->capability.p_qp);
	print_cap("b_qp", &inst->capability.b_qp);
	print_cap("rc_modes", &inst->capability.rc_modes);
	print_cap("blur_width", &inst->capability.blur_width);
	print_cap("blur_height", &inst->capability.blur_height);
	print_cap("slice_delivery_mode", &inst->capability.slice_delivery_mode);
	print_cap("slice_bytes", &inst->capability.slice_bytes);
	print_cap("slice_mbs", &inst->capability.slice_mbs);
	print_cap("secure", &inst->capability.secure);
	print_cap("max_num_b_frames", &inst->capability.max_num_b_frames);
	print_cap("max_video_cores", &inst->capability.max_video_cores);
	print_cap("max_work_modes", &inst->capability.max_work_modes);
	print_cap("ubwc_cr_stats", &inst->capability.ubwc_cr_stats);

	dprintk(VIDC_DBG, "profile count : %u",
		inst->capability.profile_level.profile_count);
	for (i = 0; i < inst->capability.profile_level.profile_count; i++) {
		dprintk(VIDC_DBG, "profile : %u ", inst->capability.
			profile_level.profile_level[i].profile);
		dprintk(VIDC_DBG, "level   : %u ", inst->capability.
			profile_level.profile_level[i].level);
	}

	signal_session_msg_receipt(cmd, inst);

	/*
	 * Update controls after informing session_init_done to avoid
	 * timeouts.
	 */

	msm_vidc_comm_update_ctrl_limits(inst);
	put_inst(inst);
}

static void msm_vidc_queue_rbr_event(struct msm_vidc_inst *inst,
		int fd, u32 offset)
{
	struct v4l2_event buf_event = {0};
	u32 *ptr;

	buf_event.type = V4L2_EVENT_RELEASE_BUFFER_REFERENCE;
	ptr = (u32 *)buf_event.u.data;
	ptr[0] = fd;
	ptr[1] = offset;

	v4l2_event_queue_fh(&inst->event_handler, &buf_event);
}

static void handle_event_change(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_inst *inst = NULL;
	struct msm_vidc_cb_event *event_notify = data;
	int event = V4L2_EVENT_SEQ_CHANGED_INSUFFICIENT;
	struct v4l2_event seq_changed_event = {0};
	int rc = 0;
	struct hfi_device *hdev;
	u32 *ptr = NULL;
	struct hal_buffer_requirements *bufreq;

	if (!event_notify) {
		dprintk(VIDC_WARN, "Got an empty event from hfi\n");
		return;
	}

	inst = get_inst(get_vidc_core(event_notify->device_id),
			event_notify->session_id);
	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		goto err_bad_event;
	}
	hdev = inst->core->device;

	switch (event_notify->hal_event_type) {
	case HAL_EVENT_SEQ_CHANGED_SUFFICIENT_RESOURCES:
		event = V4L2_EVENT_SEQ_CHANGED_SUFFICIENT;
		break;
	case HAL_EVENT_SEQ_CHANGED_INSUFFICIENT_RESOURCES:
		event = V4L2_EVENT_SEQ_CHANGED_INSUFFICIENT;
		break;
	case HAL_EVENT_RELEASE_BUFFER_REFERENCE:
	{
		struct msm_vidc_buffer *mbuf;
		u32 planes[VIDEO_MAX_PLANES] = {0};

		dprintk(VIDC_DBG,
			"%s: inst: %pK data_buffer: %x extradata_buffer: %x\n",
			__func__, inst, event_notify->packet_buffer,
			event_notify->extra_data_buffer);

		planes[0] = event_notify->packet_buffer;
		planes[1] = event_notify->extra_data_buffer;
		mbuf = msm_comm_get_buffer_using_device_planes(inst, planes);
		if (!mbuf || !kref_get_mbuf(inst, mbuf)) {
			dprintk(VIDC_ERR,
				"%s: data_addr %x, extradata_addr %x not found\n",
				__func__, planes[0], planes[1]);
		} else {
			handle_release_buffer_reference(inst, mbuf);
			kref_put_mbuf(mbuf);
		}
		goto err_bad_event;
	}
	default:
		break;
	}

	/* Bit depth and pic struct changed event are combined into a single
	* event (insufficient event) for the userspace. Currently bitdepth
	* changes is only for HEVC and interlaced support is for all
	* codecs except HEVC
	* event data is now as follows:
	* u32 *ptr = seq_changed_event.u.data;
	* ptr[0] = height
	* ptr[1] = width
	* ptr[2] = bit depth
	* ptr[3] = pic struct (progressive or interlaced)
	* ptr[4] = colour space
	* ptr[5] = crop_data(top)
	* ptr[6] = crop_data(left)
	* ptr[7] = crop_data(height)
	* ptr[8] = crop_data(width)
	* ptr[9] = profile
	* ptr[10] = level
	*/

	inst->entropy_mode = event_notify->entropy_mode;
	inst->profile = event_notify->profile;
	inst->level = event_notify->level;
	inst->prop.crop_info.left =
		event_notify->crop_data.left;
	inst->prop.crop_info.top =
		event_notify->crop_data.top;
	inst->prop.crop_info.height =
		event_notify->crop_data.height;
	inst->prop.crop_info.width =
		event_notify->crop_data.width;
	/* HW returns progressive_only flag in pic_struct. */
	inst->pic_struct =
		event_notify->pic_struct ?
		MSM_VIDC_PIC_STRUCT_PROGRESSIVE :
		MSM_VIDC_PIC_STRUCT_MAYBE_INTERLACED;

	ptr = (u32 *)seq_changed_event.u.data;
	ptr[0] = event_notify->height;
	ptr[1] = event_notify->width;
	ptr[2] = event_notify->bit_depth;
	ptr[3] = event_notify->pic_struct;
	ptr[4] = event_notify->colour_space;
	ptr[5] = event_notify->crop_data.top;
	ptr[6] = event_notify->crop_data.left;
	ptr[7] = event_notify->crop_data.height;
	ptr[8] = event_notify->crop_data.width;
	ptr[9] = msm_comm_get_v4l2_profile(
		inst->fmts[OUTPUT_PORT].fourcc,
		event_notify->profile);
	ptr[10] = msm_comm_get_v4l2_level(
		inst->fmts[OUTPUT_PORT].fourcc,
		event_notify->level);

	dprintk(VIDC_DBG,
		"Event payload: height = %d width = %d profile = %d level = %d\n",
			event_notify->height, event_notify->width,
			ptr[9], ptr[10]);

	dprintk(VIDC_DBG,
		"Event payload: bit_depth = %d pic_struct = %d colour_space = %d\n",
		event_notify->bit_depth, event_notify->pic_struct,
			event_notify->colour_space);

	dprintk(VIDC_DBG,
		"Event payload: CROP top = %d left = %d Height = %d Width = %d\n",
			event_notify->crop_data.top,
			event_notify->crop_data.left,
			event_notify->crop_data.height,
			event_notify->crop_data.width);

	mutex_lock(&inst->lock);
	inst->in_reconfig = true;
	inst->reconfig_height = event_notify->height;
	inst->reconfig_width = event_notify->width;

	if (msm_comm_get_stream_output_mode(inst) ==
			HAL_VIDEO_DECODER_SECONDARY) {

		bufreq = get_buff_req_buffer(inst,
				HAL_BUFFER_OUTPUT);
		if (!bufreq) {
			dprintk(VIDC_ERR,
				"Failed : No buffer requirements : %x\n",
					HAL_BUFFER_OUTPUT);
			return;
		}

		bufreq->buffer_count_min = event_notify->capture_buf_count;

		bufreq = get_buff_req_buffer(inst,
				HAL_BUFFER_OUTPUT2);
		if (!bufreq) {
			dprintk(VIDC_ERR,
				"Failed : No buffer requirements : %x\n",
					HAL_BUFFER_OUTPUT2);
			return;
		}

		bufreq->buffer_count_min = event_notify->capture_buf_count;
	} else {

		bufreq = get_buff_req_buffer(inst,
				HAL_BUFFER_OUTPUT);
		if (!bufreq) {
			dprintk(VIDC_ERR,
				"Failed : No buffer requirements : %x\n",
					HAL_BUFFER_OUTPUT);
			return;
		}
		bufreq->buffer_count_min = event_notify->capture_buf_count;
	}

	mutex_unlock(&inst->lock);

	if (event == V4L2_EVENT_SEQ_CHANGED_INSUFFICIENT) {
		dprintk(VIDC_DBG, "V4L2_EVENT_SEQ_CHANGED_INSUFFICIENT\n");
	} else {
		dprintk(VIDC_DBG, "V4L2_EVENT_SEQ_CHANGED_SUFFICIENT\n");
		dprintk(VIDC_DBG,
				"event_notify->height = %d event_notify->width = %d\n",
				event_notify->height,
				event_notify->width);
	}

	rc = msm_vidc_check_session_supported(inst);
	if (!rc) {
		seq_changed_event.type = event;
		v4l2_event_queue_fh(&inst->event_handler, &seq_changed_event);
	} else if (rc == -ENOTSUPP) {
		msm_vidc_queue_v4l2_event(inst,
				V4L2_EVENT_MSM_VIDC_HW_UNSUPPORTED);
	} else if (rc == -EBUSY) {
		msm_vidc_queue_v4l2_event(inst,
				V4L2_EVENT_MSM_VIDC_HW_OVERLOAD);
	}

err_bad_event:
	put_inst(inst);
}

static void handle_session_prop_info(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct getprop_buf *getprop;
	struct msm_vidc_inst *inst;

	if (!response) {
		dprintk(VIDC_ERR,
			"Failed to get valid response for prop info\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	getprop = kzalloc(sizeof(*getprop), GFP_KERNEL);
	if (!getprop) {
		dprintk(VIDC_ERR, "%s: getprop kzalloc failed\n", __func__);
		goto err_prop_info;
	}

	getprop->data = kmemdup(&response->data.property,
			sizeof(union hal_get_property), GFP_KERNEL);
	if (!getprop->data) {
		dprintk(VIDC_ERR, "%s: kmemdup failed\n", __func__);
		kfree(getprop);
		goto err_prop_info;
	}

	mutex_lock(&inst->pending_getpropq.lock);
	list_add_tail(&getprop->list, &inst->pending_getpropq.list);
	mutex_unlock(&inst->pending_getpropq.lock);

	signal_session_msg_receipt(cmd, inst);
err_prop_info:
	put_inst(inst);
}

static void handle_load_resource_done(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_inst *inst;

	if (!response) {
		dprintk(VIDC_ERR,
			"Failed to get valid response for load resource\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	if (response->status) {
		dprintk(VIDC_ERR,
				"Load resource response from FW : %#x\n",
				response->status);
		msm_comm_generate_session_error(inst);
	}

	put_inst(inst);
}

static void handle_start_done(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_inst *inst;

	if (!response) {
		dprintk(VIDC_ERR, "Failed to get valid response for start\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	signal_session_msg_receipt(cmd, inst);
	put_inst(inst);
}

static void handle_stop_done(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_inst *inst;

	if (!response) {
		dprintk(VIDC_ERR, "Failed to get valid response for stop\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	signal_session_msg_receipt(cmd, inst);
	put_inst(inst);
}

static void handle_release_res_done(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_inst *inst;

	if (!response) {
		dprintk(VIDC_ERR,
			"Failed to get valid response for release resource\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	signal_session_msg_receipt(cmd, inst);
	put_inst(inst);
}

void msm_comm_validate_output_buffers(struct msm_vidc_inst *inst)
{
	struct internal_buf *binfo;
	u32 buffers_owned_by_driver = 0;
	struct hal_buffer_requirements *output_buf;

	output_buf = get_buff_req_buffer(inst, HAL_BUFFER_OUTPUT);

	if (!output_buf) {
		dprintk(VIDC_DBG,
			"This output buffer not required, buffer_type: %x\n",
			HAL_BUFFER_OUTPUT);
		return;
	}
	mutex_lock(&inst->outputbufs.lock);
	if (list_empty(&inst->outputbufs.list)) {
		dprintk(VIDC_DBG, "%s: no OUTPUT buffers allocated\n",
			__func__);
		mutex_unlock(&inst->outputbufs.lock);
		return;
	}
	list_for_each_entry(binfo, &inst->outputbufs.list, list) {
		if (binfo->buffer_ownership != DRIVER) {
			dprintk(VIDC_DBG,
				"This buffer is with FW %x\n",
				binfo->smem.device_addr);
			continue;
		}
		buffers_owned_by_driver++;
	}
	mutex_unlock(&inst->outputbufs.lock);

	if (buffers_owned_by_driver != output_buf->buffer_count_actual) {
		dprintk(VIDC_WARN,
			"OUTPUT Buffer count mismatch %d of %d\n",
			buffers_owned_by_driver,
			output_buf->buffer_count_actual);
		msm_vidc_handle_hw_error(inst->core);
	}
}

int msm_comm_queue_output_buffers(struct msm_vidc_inst *inst)
{
	struct internal_buf *binfo;
	struct hfi_device *hdev;
	struct vidc_frame_data frame_data = {0};
	struct hal_buffer_requirements *output_buf, *extra_buf;
	int rc = 0;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	hdev = inst->core->device;

	output_buf = get_buff_req_buffer(inst, HAL_BUFFER_OUTPUT);
	if (!output_buf) {
		dprintk(VIDC_DBG,
			"This output buffer not required, buffer_type: %x\n",
			HAL_BUFFER_OUTPUT);
		return 0;
	}
	dprintk(VIDC_DBG,
		"output: num = %d, size = %d\n",
		output_buf->buffer_count_actual,
		output_buf->buffer_size);

	extra_buf = get_buff_req_buffer(inst, HAL_BUFFER_EXTRADATA_OUTPUT);

	mutex_lock(&inst->outputbufs.lock);
	list_for_each_entry(binfo, &inst->outputbufs.list, list) {
		if (binfo->buffer_ownership != DRIVER)
			continue;
		frame_data.alloc_len = output_buf->buffer_size;
		frame_data.filled_len = 0;
		frame_data.offset = 0;
		frame_data.device_addr = binfo->smem.device_addr;
		frame_data.flags = 0;
		frame_data.extradata_addr = binfo->smem.device_addr +
		output_buf->buffer_size;
		frame_data.buffer_type = HAL_BUFFER_OUTPUT;
		frame_data.extradata_size = extra_buf ?
			extra_buf->buffer_size : 0;
		rc = call_hfi_op(hdev, session_ftb,
			(void *) inst->session, &frame_data);
		binfo->buffer_ownership = FIRMWARE;
	}
	mutex_unlock(&inst->outputbufs.lock);

	return 0;
}

static void handle_session_flush(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_inst *inst;
	struct v4l2_event flush_event = {0};
	u32 *ptr = NULL;
	enum hal_flush flush_type;
	int rc;

	if (!response) {
		dprintk(VIDC_ERR, "Failed to get valid response for flush\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	mutex_lock(&inst->flush_lock);
	if (msm_comm_get_stream_output_mode(inst) ==
			HAL_VIDEO_DECODER_SECONDARY) {

		if (!(inst->fmts[OUTPUT_PORT].defer_outputs &&
				inst->in_reconfig))
			msm_comm_validate_output_buffers(inst);

		if (!inst->in_reconfig) {
			rc = msm_comm_queue_output_buffers(inst);
			if (rc) {
				dprintk(VIDC_ERR,
						"Failed to queue output buffers: %d\n",
						rc);
			}
		}
	}
	inst->in_flush = false;
	flush_event.type = V4L2_EVENT_MSM_VIDC_FLUSH_DONE;
	ptr = (u32 *)flush_event.u.data;

	flush_type = response->data.flush_type;
	switch (flush_type) {
	case HAL_FLUSH_INPUT:
		ptr[0] = V4L2_QCOM_CMD_FLUSH_OUTPUT;
		break;
	case HAL_FLUSH_OUTPUT:
		ptr[0] = V4L2_QCOM_CMD_FLUSH_CAPTURE;
		break;
	case HAL_FLUSH_ALL:
		ptr[0] |= V4L2_QCOM_CMD_FLUSH_CAPTURE;
		ptr[0] |= V4L2_QCOM_CMD_FLUSH_OUTPUT;
		break;
	default:
		dprintk(VIDC_ERR, "Invalid flush type received!");
		goto exit;
	}

	dprintk(VIDC_DBG,
		"Notify flush complete, flush_type: %x\n", flush_type);
	v4l2_event_queue_fh(&inst->event_handler, &flush_event);

exit:
	mutex_unlock(&inst->flush_lock);
	put_inst(inst);
}

static void handle_session_error(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct hfi_device *hdev = NULL;
	struct msm_vidc_inst *inst = NULL;
	int event = V4L2_EVENT_MSM_VIDC_SYS_ERROR;

	if (!response) {
		dprintk(VIDC_ERR,
			"Failed to get valid response for session error\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	hdev = inst->core->device;
	dprintk(VIDC_ERR, "Session error received for inst %pK session %x\n",
		inst, hash32_ptr(inst->session));

	if (response->status == VIDC_ERR_MAX_CLIENTS) {
		dprintk(VIDC_WARN, "Too many clients, rejecting %pK", inst);
		event = V4L2_EVENT_MSM_VIDC_MAX_CLIENTS;

		/*
		 * Clean the HFI session now. Since inst->state is moved to
		 * INVALID, forward thread doesn't know FW has valid session
		 * or not. This is the last place driver knows that there is
		 * no session in FW. Hence clean HFI session now.
		 */

		msm_comm_session_clean(inst);
	} else if (response->status == VIDC_ERR_NOT_SUPPORTED) {
		dprintk(VIDC_WARN, "Unsupported bitstream in %pK", inst);
		event = V4L2_EVENT_MSM_VIDC_HW_UNSUPPORTED;
	} else {
		dprintk(VIDC_WARN, "Unknown session error (%d) for %pK\n",
				response->status, inst);
		event = V4L2_EVENT_MSM_VIDC_SYS_ERROR;
	}

	/* change state before sending error to client */
	change_inst_state(inst, MSM_VIDC_CORE_INVALID);
	msm_vidc_queue_v4l2_event(inst, event);
	put_inst(inst);
}

static void msm_comm_clean_notify_client(struct msm_vidc_core *core)
{
	struct msm_vidc_inst *inst = NULL;

	if (!core) {
		dprintk(VIDC_ERR, "%s: Invalid params\n", __func__);
		return;
	}

	dprintk(VIDC_WARN, "%s: Core %pK\n", __func__, core);
	mutex_lock(&core->lock);

	list_for_each_entry(inst, &core->instances, list) {
		mutex_lock(&inst->lock);
		inst->state = MSM_VIDC_CORE_INVALID;
		mutex_unlock(&inst->lock);
		dprintk(VIDC_WARN,
			"%s Send sys error for inst %pK\n", __func__, inst);
		msm_vidc_queue_v4l2_event(inst,
				V4L2_EVENT_MSM_VIDC_SYS_ERROR);
	}
	mutex_unlock(&core->lock);
}

static void handle_sys_error(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_core *core = NULL;
	struct hfi_device *hdev = NULL;
	struct msm_vidc_inst *inst = NULL;
	int rc = 0;

	subsystem_crashed("venus");
	if (!response) {
		dprintk(VIDC_ERR,
			"Failed to get valid response for sys error\n");
		return;
	}

	core = get_vidc_core(response->device_id);
	if (!core) {
		dprintk(VIDC_ERR,
				"Got SYS_ERR but unable to identify core\n");
		return;
	}
	hdev = core->device;

	mutex_lock(&core->lock);
	if (core->state == VIDC_CORE_UNINIT) {
		dprintk(VIDC_ERR,
			"%s: Core %pK already moved to state %d\n",
			 __func__, core, core->state);
		mutex_unlock(&core->lock);
		return;
	}

	dprintk(VIDC_WARN, "SYS_ERROR received for core %pK\n", core);
	msm_vidc_noc_error_info(core);
	call_hfi_op(hdev, flush_debug_queue, hdev->hfi_device_data);
	list_for_each_entry(inst, &core->instances, list) {
		dprintk(VIDC_WARN,
			"%s: Send sys error for inst %pK\n", __func__, inst);
		change_inst_state(inst, MSM_VIDC_CORE_INVALID);
		msm_vidc_queue_v4l2_event(inst, V4L2_EVENT_MSM_VIDC_SYS_ERROR);
		if (!core->trigger_ssr)
			msm_comm_print_inst_info(inst);
	}
	/* handle the hw error before core released to get full debug info */
	msm_vidc_handle_hw_error(core);
	if (response->status == VIDC_ERR_NOC_ERROR) {
		dprintk(VIDC_WARN, "Got NOC error");
		MSM_VIDC_ERROR(true);
	}
	dprintk(VIDC_DBG, "Calling core_release\n");
	rc = call_hfi_op(hdev, core_release, hdev->hfi_device_data);
	if (rc) {
		dprintk(VIDC_ERR, "core_release failed\n");
		mutex_unlock(&core->lock);
		return;
	}
	core->state = VIDC_CORE_UNINIT;
	mutex_unlock(&core->lock);

	dprintk(VIDC_WARN, "SYS_ERROR handled.\n");
}

void msm_comm_session_clean(struct msm_vidc_inst *inst)
{
	int rc = 0;
	struct hfi_device *hdev = NULL;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid params\n", __func__);
		return;
	}
	if (!inst->session) {
		dprintk(VIDC_DBG, "%s: inst %pK session already cleaned\n",
			__func__, inst);
		return;
	}

	hdev = inst->core->device;
	mutex_lock(&inst->lock);
	dprintk(VIDC_DBG, "%s: inst %pK\n", __func__, inst);
	rc = call_hfi_op(hdev, session_clean,
			(void *)inst->session);
	if (rc) {
		dprintk(VIDC_ERR,
			"Session clean failed :%pK\n", inst);
	}
	inst->session = NULL;
	mutex_unlock(&inst->lock);
}

static void handle_session_close(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_cmd_done *response = data;
	struct msm_vidc_inst *inst;

	if (!response) {
		dprintk(VIDC_ERR,
			"Failed to get valid response for session close\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	signal_session_msg_receipt(cmd, inst);
	show_stats(inst);
	put_inst(inst);
}

struct vb2_buffer *msm_comm_get_vb_using_vidc_buffer(
		struct msm_vidc_inst *inst, struct msm_vidc_buffer *mbuf)
{
	u32 port = 0;
	struct vb2_buffer *vb = NULL;
	struct vb2_queue *q = NULL;
	bool found = false;

	if (mbuf->vvb.vb2_buf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
		port = CAPTURE_PORT;
	} else if (mbuf->vvb.vb2_buf.type ==
			V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
		port = OUTPUT_PORT;
	} else {
		dprintk(VIDC_ERR, "%s: invalid type %d\n",
			__func__, mbuf->vvb.vb2_buf.type);
		return NULL;
	}

	q = &inst->bufq[port].vb2_bufq;
	mutex_lock(&inst->bufq[port].lock);
	found = false;
	list_for_each_entry(vb, &q->queued_list, queued_entry) {
		if (vb->state != VB2_BUF_STATE_ACTIVE)
			continue;
		if (msm_comm_compare_vb2_planes(inst, mbuf, vb)) {
			found = true;
			break;
		}
	}
	mutex_unlock(&inst->bufq[port].lock);
	if (!found) {
		print_vidc_buffer(VIDC_ERR, "vb2 not found for", inst, mbuf);
		return NULL;
	}

	return vb;
}

int msm_comm_vb2_buffer_done(struct msm_vidc_inst *inst,
		struct vb2_buffer *vb)
{
	u32 port;

	if (!inst || !vb) {
		dprintk(VIDC_ERR, "%s: invalid params %pK %pK\n",
			__func__, inst, vb);
		return -EINVAL;
	}

	if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
		port = CAPTURE_PORT;
	} else if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
		port = OUTPUT_PORT;
	} else {
		dprintk(VIDC_ERR, "%s: invalid type %d\n",
			__func__, vb->type);
		return -EINVAL;
	}

	mutex_lock(&inst->bufq[port].lock);
	vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
	mutex_unlock(&inst->bufq[port].lock);

	return 0;
}

static bool is_eos_buffer(struct msm_vidc_inst *inst, u32 device_addr)
{
	struct eos_buf *temp, *next;
	bool found = false;

	mutex_lock(&inst->eosbufs.lock);
	list_for_each_entry_safe(temp, next, &inst->eosbufs.list, list) {
		if (temp->smem.device_addr == device_addr) {
			found = true;
			list_del(&temp->list);
			msm_comm_smem_free(inst, &temp->smem);
			kfree(temp);
			break;
		}
	}
	mutex_unlock(&inst->eosbufs.lock);

	return found;
}

static void handle_ebd(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_data_done *response = data;
	struct msm_vidc_buffer *mbuf;
	struct vb2_buffer *vb, *vb2;
	struct msm_vidc_inst *inst;
	struct vidc_hal_ebd *empty_buf_done;
	struct vb2_v4l2_buffer *vbuf;
	u32 planes[VIDEO_MAX_PLANES] = {0};
	u32 extra_idx = 0, i;

	if (!response) {
		dprintk(VIDC_ERR, "Invalid response from vidc_hal\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	empty_buf_done = (struct vidc_hal_ebd *)&response->input_done;
	/* If this is internal EOS buffer, handle it in driver */
	if (is_eos_buffer(inst, empty_buf_done->packet_buffer)) {
		dprintk(VIDC_DBG, "Received EOS buffer 0x%x\n",
			empty_buf_done->packet_buffer);
		goto exit;
	}

	planes[0] = empty_buf_done->packet_buffer;
	planes[1] = empty_buf_done->extra_data_buffer;

	mbuf = msm_comm_get_buffer_using_device_planes(inst, planes);
	if (!mbuf || !kref_get_mbuf(inst, mbuf)) {
		dprintk(VIDC_ERR,
			"%s: data_addr %x, extradata_addr %x not found\n",
			__func__, planes[0], planes[1]);
		goto exit;
	}
	vb2 = msm_comm_get_vb_using_vidc_buffer(inst, mbuf);

	/*
	 * take registeredbufs.lock to update mbuf & vb2 variables together
	 * so that both are in sync else if mbuf and vb2 variables are not
	 * in sync msm_comm_compare_vb2_planes() returns false for the
	 * right buffer due to data_offset field mismatch.
	 */
	mutex_lock(&inst->registeredbufs.lock);
	vb = &mbuf->vvb.vb2_buf;

	vb->planes[0].bytesused = response->input_done.filled_len;
	if (vb->planes[0].bytesused > vb->planes[0].length)
		dprintk(VIDC_INFO, "bytesused overflow length\n");

	vb->planes[0].data_offset = response->input_done.offset;
	if (vb->planes[0].data_offset > vb->planes[0].length)
		dprintk(VIDC_INFO, "data_offset overflow length\n");

	if (empty_buf_done->status == VIDC_ERR_NOT_SUPPORTED) {
		dprintk(VIDC_INFO, "Failed : Unsupported input stream\n");
		mbuf->vvb.flags |= V4L2_QCOM_BUF_INPUT_UNSUPPORTED;
	}
	if (empty_buf_done->status == VIDC_ERR_BITSTREAM_ERR) {
		dprintk(VIDC_INFO, "Failed : Corrupted input stream\n");
		mbuf->vvb.flags |= V4L2_QCOM_BUF_DATA_CORRUPT;
	}
	if (empty_buf_done->flags & HAL_BUFFERFLAG_SYNCFRAME)
		mbuf->vvb.flags |= V4L2_QCOM_BUF_FLAG_IDRFRAME |
			V4L2_BUF_FLAG_KEYFRAME;

	extra_idx = EXTRADATA_IDX(inst->bufq[OUTPUT_PORT].num_planes);
	if (extra_idx && extra_idx < VIDEO_MAX_PLANES)
		vb->planes[extra_idx].bytesused = vb->planes[extra_idx].length;

	if (vb2) {
		vbuf = to_vb2_v4l2_buffer(vb2);
		vbuf->flags |= mbuf->vvb.flags;
		for (i = 0; i < mbuf->vvb.vb2_buf.num_planes; i++) {
			vb2->planes[i].bytesused =
				mbuf->vvb.vb2_buf.planes[i].bytesused;
			vb2->planes[i].data_offset =
				mbuf->vvb.vb2_buf.planes[i].data_offset;
		}
	}
	mutex_unlock(&inst->registeredbufs.lock);

	update_recon_stats(inst, &empty_buf_done->recon_stats);
	msm_vidc_clear_freq_entry(inst, mbuf->smem[0].device_addr);
	/*
	 * put_buffer should be done before vb2_buffer_done else
	 * client might queue the same buffer before it is unmapped
	 * in put_buffer.
	 */
	msm_comm_put_vidc_buffer(inst, mbuf);
	msm_comm_vb2_buffer_done(inst, vb2);
	msm_vidc_debugfs_update(inst, MSM_VIDC_DEBUGFS_EVENT_EBD);
	kref_put_mbuf(mbuf);
exit:
	put_inst(inst);
}

static int handle_multi_stream_buffers(struct msm_vidc_inst *inst,
		u32 dev_addr)
{
	struct internal_buf *binfo;
	struct msm_smem *smem;
	bool found = false;

	mutex_lock(&inst->outputbufs.lock);
	list_for_each_entry(binfo, &inst->outputbufs.list, list) {
		smem = &binfo->smem;
		if (smem && dev_addr == smem->device_addr) {
			if (binfo->buffer_ownership == DRIVER) {
				dprintk(VIDC_ERR,
					"FW returned same buffer: %x\n",
					dev_addr);
				break;
			}
			binfo->buffer_ownership = DRIVER;
			found = true;
			break;
		}
	}
	mutex_unlock(&inst->outputbufs.lock);

	if (!found) {
		dprintk(VIDC_ERR,
			"Failed to find output buffer in queued list: %x\n",
			dev_addr);
	}

	return 0;
}

enum hal_buffer msm_comm_get_hal_output_buffer(struct msm_vidc_inst *inst)
{
	if (msm_comm_get_stream_output_mode(inst) ==
		HAL_VIDEO_DECODER_SECONDARY)
		return HAL_BUFFER_OUTPUT2;
	else
		return HAL_BUFFER_OUTPUT;
}

static void handle_fbd(enum hal_command_response cmd, void *data)
{
	struct msm_vidc_cb_data_done *response = data;
	struct msm_vidc_buffer *mbuf;
	struct msm_vidc_inst *inst;
	struct vb2_buffer *vb, *vb2;
	struct vidc_hal_fbd *fill_buf_done;
	struct vb2_v4l2_buffer *vbuf;
	enum hal_buffer buffer_type;
	u64 time_usec = 0;
	u32 planes[VIDEO_MAX_PLANES] = {0};
	u32 extra_idx, i;

	if (!response) {
		dprintk(VIDC_ERR, "Invalid response from vidc_hal\n");
		return;
	}

	inst = get_inst(get_vidc_core(response->device_id),
			response->session_id);
	if (!inst) {
		dprintk(VIDC_WARN, "Got a response for an inactive session\n");
		return;
	}

	fill_buf_done = (struct vidc_hal_fbd *)&response->output_done;
	planes[0] = fill_buf_done->packet_buffer1;
	planes[1] = fill_buf_done->extra_data_buffer;

	buffer_type = msm_comm_get_hal_output_buffer(inst);
	if (fill_buf_done->buffer_type == buffer_type) {
		mbuf = msm_comm_get_buffer_using_device_planes(inst, planes);
		if (!mbuf || !kref_get_mbuf(inst, mbuf)) {
			dprintk(VIDC_ERR,
				"%s: data_addr %x, extradata_addr %x not found\n",
				__func__, planes[0], planes[1]);
			goto exit;
		}
		vb2 = msm_comm_get_vb_using_vidc_buffer(inst, mbuf);
	} else {
		if (handle_multi_stream_buffers(inst,
				fill_buf_done->packet_buffer1))
			dprintk(VIDC_ERR,
				"Failed : Output buffer not found %pa\n",
				&fill_buf_done->packet_buffer1);
		goto exit;
	}

	/*
	 * take registeredbufs.lock to update mbuf & vb2 variables together
	 * so that both are in sync else if mbuf and vb2 variables are not
	 * in sync msm_comm_compare_vb2_planes() returns false for the
	 * right buffer due to data_offset field mismatch.
	 */
	mutex_lock(&inst->registeredbufs.lock);
	vb = &mbuf->vvb.vb2_buf;

	if (fill_buf_done->flags1 & HAL_BUFFERFLAG_DROP_FRAME ||
		fill_buf_done->flags1 & HAL_BUFFERFLAG_DECODEONLY)
		fill_buf_done->filled_len1 = 0;
	vb->planes[0].bytesused = fill_buf_done->filled_len1;
	if (vb->planes[0].bytesused > vb->planes[0].length)
		dprintk(VIDC_INFO,
			"fbd:Overflow bytesused = %d; length = %d\n",
			vb->planes[0].bytesused,
			vb->planes[0].length);
	vb->planes[0].data_offset = fill_buf_done->offset1;
	if (vb->planes[0].data_offset > vb->planes[0].length)
		dprintk(VIDC_INFO,
			"fbd:Overflow data_offset = %d; length = %d\n",
			vb->planes[0].data_offset,
			vb->planes[0].length);
	if (!(fill_buf_done->flags1 & HAL_BUFFERFLAG_TIMESTAMPINVALID)) {
		time_usec = fill_buf_done->timestamp_hi;
		time_usec = (time_usec << 32) | fill_buf_done->timestamp_lo;
	} else {
		time_usec = 0;
		dprintk(VIDC_DBG,
				"Set zero timestamp for buffer %pa, filled: %d, (hi:%u, lo:%u)\n",
				&fill_buf_done->packet_buffer1,
				fill_buf_done->filled_len1,
				fill_buf_done->timestamp_hi,
				fill_buf_done->timestamp_lo);
	}
	vb->timestamp = (time_usec * NSEC_PER_USEC);

	if (inst->session_type == MSM_VIDC_DECODER) {
		msm_comm_store_mark_data(&inst->fbd_data, vb->index,
			fill_buf_done->mark_data, fill_buf_done->mark_target);
	}

	extra_idx = EXTRADATA_IDX(inst->bufq[CAPTURE_PORT].num_planes);
	if (extra_idx && extra_idx < VIDEO_MAX_PLANES)
		vb->planes[extra_idx].bytesused = vb->planes[extra_idx].length;

	mbuf->vvb.flags = 0;
	if (fill_buf_done->flags1 & HAL_BUFFERFLAG_READONLY)
		mbuf->vvb.flags |= V4L2_QCOM_BUF_FLAG_READONLY;
	if (fill_buf_done->flags1 & HAL_BUFFERFLAG_EOS)
		mbuf->vvb.flags |= V4L2_QCOM_BUF_FLAG_EOS;
	if (fill_buf_done->flags1 & HAL_BUFFERFLAG_CODECCONFIG)
		mbuf->vvb.flags |= V4L2_QCOM_BUF_FLAG_CODECCONFIG;
	if (fill_buf_done->flags1 & HAL_BUFFERFLAG_SYNCFRAME)
		mbuf->vvb.flags |= V4L2_QCOM_BUF_FLAG_IDRFRAME;
	if (fill_buf_done->flags1 & HAL_BUFFERFLAG_EOSEQ)
		mbuf->vvb.flags |= V4L2_QCOM_BUF_FLAG_EOSEQ;
	if (fill_buf_done->flags1 & HAL_BUFFERFLAG_DECODEONLY ||
		fill_buf_done->flags1 & HAL_BUFFERFLAG_DROP_FRAME)
		mbuf->vvb.flags |= V4L2_QCOM_BUF_FLAG_DECODEONLY;
	if (fill_buf_done->flags1 & HAL_BUFFERFLAG_DATACORRUPT)
		mbuf->vvb.flags |= V4L2_QCOM_BUF_DATA_CORRUPT;
	switch (fill_buf_done->picture_type) {
	case HAL_PICTURE_IDR:
		mbuf->vvb.flags |= V4L2_QCOM_BUF_FLAG_IDRFRAME;
		mbuf->vvb.flags |= V4L2_BUF_FLAG_KEYFRAME;
		break;
	case HAL_PICTURE_I:
		mbuf->vvb.flags |= V4L2_BUF_FLAG_KEYFRAME;
		break;
	case HAL_PICTURE_P:
		mbuf->vvb.flags |= V4L2_BUF_FLAG_PFRAME;
		break;
	case HAL_PICTURE_B:
		mbuf->vvb.flags |= V4L2_BUF_FLAG_BFRAME;
		break;
	case HAL_FRAME_NOTCODED:
	case HAL_UNUSED_PICT:
		/* Do we need to care about these? */
	case HAL_FRAME_YUV:
		break;
	default:
		break;
	}

	if (vb2) {
		vbuf = to_vb2_v4l2_buffer(vb2);
		vbuf->flags = mbuf->vvb.flags;
		vb2->timestamp = mbuf->vvb.vb2_buf.timestamp;
		for (i = 0; i < mbuf->vvb.vb2_buf.num_planes; i++) {
			vb2->planes[i].bytesused =
				mbuf->vvb.vb2_buf.planes[i].bytesused;
			vb2->planes[i].data_offset =
				mbuf->vvb.vb2_buf.planes[i].data_offset;
		}
	}
	mutex_unlock(&inst->registeredbufs.lock);

	/*
	 * put_buffer should be done before vb2_buffer_done else
	 * client might queue the same buffer before it is unmapped
	 * in put_buffer.
	 */
	msm_comm_put_vidc_buffer(inst, mbuf);
	msm_comm_vb2_buffer_done(inst, vb2);
	msm_vidc_debugfs_update(inst, MSM_VIDC_DEBUGFS_EVENT_FBD);
	kref_put_mbuf(mbuf);

exit:
	put_inst(inst);
}

void handle_cmd_response(enum hal_command_response cmd, void *data)
{
	dprintk(VIDC_DBG, "Command response = %d\n", cmd);
	switch (cmd) {
	case HAL_SYS_INIT_DONE:
		handle_sys_init_done(cmd, data);
		break;
	case HAL_SYS_RELEASE_RESOURCE_DONE:
		handle_sys_release_res_done(cmd, data);
		break;
	case HAL_SESSION_INIT_DONE:
		handle_session_init_done(cmd, data);
		break;
	case HAL_SESSION_PROPERTY_INFO:
		handle_session_prop_info(cmd, data);
		break;
	case HAL_SESSION_LOAD_RESOURCE_DONE:
		handle_load_resource_done(cmd, data);
		break;
	case HAL_SESSION_START_DONE:
		handle_start_done(cmd, data);
		break;
	case HAL_SESSION_ETB_DONE:
		handle_ebd(cmd, data);
		break;
	case HAL_SESSION_FTB_DONE:
		handle_fbd(cmd, data);
		break;
	case HAL_SESSION_STOP_DONE:
		handle_stop_done(cmd, data);
		break;
	case HAL_SESSION_RELEASE_RESOURCE_DONE:
		handle_release_res_done(cmd, data);
		break;
	case HAL_SESSION_END_DONE:
	case HAL_SESSION_ABORT_DONE:
		handle_session_close(cmd, data);
		break;
	case HAL_SESSION_EVENT_CHANGE:
		handle_event_change(cmd, data);
		break;
	case HAL_SESSION_FLUSH_DONE:
		handle_session_flush(cmd, data);
		break;
	case HAL_SYS_WATCHDOG_TIMEOUT:
	case HAL_SYS_ERROR:
		handle_sys_error(cmd, data);
		break;
	case HAL_SESSION_ERROR:
		handle_session_error(cmd, data);
		break;
	case HAL_SESSION_RELEASE_BUFFER_DONE:
		handle_session_release_buf_done(cmd, data);
		break;
	default:
		dprintk(VIDC_DBG, "response unhandled: %d\n", cmd);
		break;
	}
}

static inline enum msm_vidc_thermal_level msm_comm_vidc_thermal_level(int level)
{
	switch (level) {
	case 0:
		return VIDC_THERMAL_NORMAL;
	case 1:
		return VIDC_THERMAL_LOW;
	case 2:
		return VIDC_THERMAL_HIGH;
	default:
		return VIDC_THERMAL_CRITICAL;
	}
}

static bool is_core_turbo(struct msm_vidc_core *core, unsigned long freq)
{
	int i = 0;
	struct allowed_clock_rates_table *allowed_clks_tbl = NULL;
	u32 max_freq = 0;

	allowed_clks_tbl = core->resources.allowed_clks_tbl;
	for (i = 0; i < core->resources.allowed_clks_tbl_size; i++) {
		if (max_freq < allowed_clks_tbl[i].clock_rate)
			max_freq = allowed_clks_tbl[i].clock_rate;
	}
	return freq >= max_freq;
}

static bool is_thermal_permissible(struct msm_vidc_core *core)
{
	enum msm_vidc_thermal_level tl;
	unsigned long freq = 0;
	bool is_turbo = false;

	if (!core->resources.thermal_mitigable)
		return true;

	if (msm_vidc_thermal_mitigation_disabled) {
		dprintk(VIDC_DBG,
			"Thermal mitigation not enabled. debugfs %d\n",
			msm_vidc_thermal_mitigation_disabled);
		return true;
	}

	tl = msm_comm_vidc_thermal_level(vidc_driver->thermal_level);
	freq = core->curr_freq;

	is_turbo = is_core_turbo(core, freq);
	dprintk(VIDC_DBG,
		"Core freq %ld Thermal level %d Turbo mode %d\n",
		freq, tl, is_turbo);

	if (is_turbo && tl >= VIDC_THERMAL_LOW) {
		dprintk(VIDC_ERR,
			"Video session not allowed. Turbo mode %d Thermal level %d\n",
			is_turbo, tl);
		return false;
	}
	return true;
}

static int msm_comm_session_abort(struct msm_vidc_inst *inst)
{
	int rc = 0, abort_completion = 0;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid params\n", __func__);
		return -EINVAL;
	}
	hdev = inst->core->device;
	abort_completion = SESSION_MSG_INDEX(HAL_SESSION_ABORT_DONE);

	dprintk(VIDC_WARN, "%s: inst %pK session %x\n", __func__,
		inst, hash32_ptr(inst->session));
	rc = call_hfi_op(hdev, session_abort, (void *)inst->session);
	if (rc) {
		dprintk(VIDC_ERR,
			"%s session_abort failed rc: %d\n", __func__, rc);
		goto exit;
	}
	rc = wait_for_completion_timeout(
			&inst->completions[abort_completion],
			msecs_to_jiffies(
				inst->core->resources.msm_vidc_hw_rsp_timeout));
	if (!rc) {
		dprintk(VIDC_ERR, "%s: inst %pK session %x abort timed out\n",
				__func__, inst, hash32_ptr(inst->session));
		msm_comm_generate_sys_error(inst);
		rc = -EBUSY;
	} else {
		rc = 0;
	}
exit:
	return rc;
}

static void handle_thermal_event(struct msm_vidc_core *core)
{
	int rc = 0;
	struct msm_vidc_inst *inst;

	if (!core || !core->device) {
		dprintk(VIDC_ERR, "%s Invalid params\n", __func__);
		return;
	}
	mutex_lock(&core->lock);
	list_for_each_entry(inst, &core->instances, list) {
		if (!inst->session)
			continue;

		mutex_unlock(&core->lock);
		if (inst->state >= MSM_VIDC_OPEN_DONE &&
			inst->state < MSM_VIDC_CLOSE_DONE) {
			dprintk(VIDC_WARN, "%s: abort inst %pK\n",
				__func__, inst);
			rc = msm_comm_session_abort(inst);
			if (rc) {
				dprintk(VIDC_ERR,
					"%s session_abort failed rc: %d\n",
					__func__, rc);
				goto err_sess_abort;
			}
			change_inst_state(inst, MSM_VIDC_CORE_INVALID);
			dprintk(VIDC_WARN,
				"%s Send sys error for inst %pK\n",
				__func__, inst);
			msm_vidc_queue_v4l2_event(inst,
					V4L2_EVENT_MSM_VIDC_SYS_ERROR);
		} else {
			msm_comm_generate_session_error(inst);
		}
		mutex_lock(&core->lock);
	}
	mutex_unlock(&core->lock);
	return;

err_sess_abort:
	msm_comm_clean_notify_client(core);
}

void msm_comm_handle_thermal_event(void)
{
	struct msm_vidc_core *core;

	list_for_each_entry(core, &vidc_driver->cores, list) {
		if (!is_thermal_permissible(core)) {
			dprintk(VIDC_WARN,
				"Thermal level critical, stop all active sessions!\n");
			handle_thermal_event(core);
		}
	}
}

int msm_comm_check_core_init(struct msm_vidc_core *core)
{
	int rc = 0;

	mutex_lock(&core->lock);
	if (core->state >= VIDC_CORE_INIT_DONE) {
		dprintk(VIDC_INFO, "Video core: %d is already in state: %d\n",
				core->id, core->state);
		goto exit;
	}
	dprintk(VIDC_DBG, "Waiting for SYS_INIT_DONE\n");
	rc = wait_for_completion_timeout(
		&core->completions[SYS_MSG_INDEX(HAL_SYS_INIT_DONE)],
		msecs_to_jiffies(core->resources.msm_vidc_hw_rsp_timeout));
	if (!rc) {
		dprintk(VIDC_ERR, "%s: Wait interrupted or timed out: %d\n",
				__func__, SYS_MSG_INDEX(HAL_SYS_INIT_DONE));
		rc = -EIO;
		goto exit;
	} else {
		core->state = VIDC_CORE_INIT_DONE;
		rc = 0;
	}
	dprintk(VIDC_DBG, "SYS_INIT_DONE!!!\n");
exit:
	mutex_unlock(&core->lock);
	return rc;
}

static int msm_comm_init_core_done(struct msm_vidc_inst *inst)
{
	int rc = 0;

	rc = msm_comm_check_core_init(inst->core);
	if (rc) {
		dprintk(VIDC_ERR, "%s - failed to initialize core\n", __func__);
		msm_comm_generate_sys_error(inst);
		return rc;
	}
	change_inst_state(inst, MSM_VIDC_CORE_INIT_DONE);
	return rc;
}

static int msm_comm_init_core(struct msm_vidc_inst *inst)
{
	int rc = 0;
	struct hfi_device *hdev;
	struct msm_vidc_core *core;

	if (!inst || !inst->core || !inst->core->device)
		return -EINVAL;

	core = inst->core;
	hdev = core->device;
	mutex_lock(&core->lock);
	if (core->state >= VIDC_CORE_INIT) {
		dprintk(VIDC_INFO, "Video core: %d is already in state: %d\n",
				core->id, core->state);
		goto core_already_inited;
	}
	if (!core->capabilities) {
		core->capabilities = kzalloc(VIDC_MAX_SESSIONS *
				sizeof(struct msm_vidc_capability), GFP_KERNEL);
		if (!core->capabilities) {
			dprintk(VIDC_ERR,
				"%s: failed to allocate capabilities\n",
				__func__);
			rc = -ENOMEM;
			goto fail_cap_alloc;
		}
	} else {
		dprintk(VIDC_WARN,
			"%s: capabilities memory is expected to be freed\n",
			__func__);
	}
	dprintk(VIDC_DBG, "%s: core %pK\n", __func__, core);
	rc = call_hfi_op(hdev, core_init, hdev->hfi_device_data);
	if (rc) {
		dprintk(VIDC_ERR, "Failed to init core, id = %d\n",
				core->id);
		goto fail_core_init;
	}
	core->state = VIDC_CORE_INIT;
	core->smmu_fault_handled = false;
	core->trigger_ssr = false;

core_already_inited:
	change_inst_state(inst, MSM_VIDC_CORE_INIT);
	mutex_unlock(&core->lock);

	rc = msm_comm_scale_clocks_and_bus(inst);
	return rc;

fail_core_init:
	kfree(core->capabilities);
fail_cap_alloc:
	core->capabilities = NULL;
	core->state = VIDC_CORE_UNINIT;
	mutex_unlock(&core->lock);
	return rc;
}

static int msm_vidc_deinit_core(struct msm_vidc_inst *inst)
{
	struct msm_vidc_core *core;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	core = inst->core;
	hdev = core->device;

	mutex_lock(&core->lock);
	if (core->state == VIDC_CORE_UNINIT) {
		dprintk(VIDC_INFO, "Video core: %d is already in state: %d\n",
				core->id, core->state);
		goto core_already_uninited;
	}
	mutex_unlock(&core->lock);

	msm_comm_scale_clocks_and_bus(inst);

	mutex_lock(&core->lock);

	if (!core->resources.never_unload_fw) {
		cancel_delayed_work(&core->fw_unload_work);

		/*
		 * Delay unloading of firmware. This is useful
		 * in avoiding firmware download delays in cases where we
		 * will have a burst of back to back video playback sessions
		 * e.g. thumbnail generation.
		 */
		schedule_delayed_work(&core->fw_unload_work,
			msecs_to_jiffies(core->state == VIDC_CORE_INIT_DONE ?
			core->resources.msm_vidc_firmware_unload_delay : 0));

		dprintk(VIDC_DBG, "firmware unload delayed by %u ms\n",
			core->state == VIDC_CORE_INIT_DONE ?
			core->resources.msm_vidc_firmware_unload_delay : 0);
	}

core_already_uninited:
	change_inst_state(inst, MSM_VIDC_CORE_UNINIT);
	mutex_unlock(&core->lock);
	return 0;
}

int msm_comm_force_cleanup(struct msm_vidc_inst *inst)
{
	msm_comm_kill_session(inst);
	return msm_vidc_deinit_core(inst);
}

static int msm_comm_session_init_done(int flipped_state,
	struct msm_vidc_inst *inst)
{
	int rc;

	dprintk(VIDC_DBG, "inst %pK: waiting for session init done\n", inst);
	rc = wait_for_state(inst, flipped_state, MSM_VIDC_OPEN_DONE,
			HAL_SESSION_INIT_DONE);
	if (rc) {
		dprintk(VIDC_ERR, "Session init failed for inst %pK\n", inst);
		msm_comm_generate_sys_error(inst);
		return rc;
	}

	return rc;
}

static int msm_comm_session_init(int flipped_state,
	struct msm_vidc_inst *inst)
{
	int rc = 0;
	int fourcc = 0;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}
	hdev = inst->core->device;

	if (IS_ALREADY_IN_STATE(flipped_state, MSM_VIDC_OPEN)) {
		dprintk(VIDC_INFO, "inst: %pK is already in state: %d\n",
						inst, inst->state);
		goto exit;
	}
	if (inst->session_type == MSM_VIDC_DECODER) {
		fourcc = inst->fmts[OUTPUT_PORT].fourcc;
	} else if (inst->session_type == MSM_VIDC_ENCODER) {
		fourcc = inst->fmts[CAPTURE_PORT].fourcc;
	} else {
		dprintk(VIDC_ERR, "Invalid session\n");
		return -EINVAL;
	}

	msm_comm_init_clocks_and_bus_data(inst);

	dprintk(VIDC_DBG, "%s: inst %pK\n", __func__, inst);
	rc = call_hfi_op(hdev, session_init, hdev->hfi_device_data,
			inst, get_hal_domain(inst->session_type),
			get_hal_codec(fourcc),
			&inst->session);

	if (rc || !inst->session) {
		dprintk(VIDC_ERR,
			"Failed to call session init for: %pK, %pK, %d, %d\n",
			inst->core->device, inst,
			inst->session_type, fourcc);
		rc = -EINVAL;
		goto exit;
	}
	change_inst_state(inst, MSM_VIDC_OPEN);
exit:
	return rc;
}

static void msm_vidc_print_running_insts(struct msm_vidc_core *core)
{
	struct msm_vidc_inst *temp;

	dprintk(VIDC_ERR, "Running instances:\n");
	dprintk(VIDC_ERR, "%4s|%4s|%4s|%4s|%4s\n",
			"type", "w", "h", "fps", "prop");

	mutex_lock(&core->lock);
	list_for_each_entry(temp, &core->instances, list) {
		if (temp->state >= MSM_VIDC_OPEN_DONE &&
				temp->state < MSM_VIDC_STOP_DONE) {
			char properties[4] = "";

			if (is_thumbnail_session(temp))
				strlcat(properties, "N", sizeof(properties));

			if (msm_comm_turbo_session(temp))
				strlcat(properties, "T", sizeof(properties));

			dprintk(VIDC_ERR, "%4d|%4d|%4d|%4d|%4s\n",
					temp->session_type,
					max(temp->prop.width[CAPTURE_PORT],
						temp->prop.width[OUTPUT_PORT]),
					max(temp->prop.height[CAPTURE_PORT],
						temp->prop.height[OUTPUT_PORT]),
					temp->prop.fps, properties);
		}
	}
	mutex_unlock(&core->lock);
}

static int msm_vidc_load_resources(int flipped_state,
	struct msm_vidc_inst *inst)
{
	int rc = 0;
	struct hfi_device *hdev;
	int num_mbs_per_sec = 0, max_load_adj = 0;
	struct msm_vidc_core *core;
	enum load_calc_quirks quirks = LOAD_CALC_IGNORE_TURBO_LOAD |
		LOAD_CALC_IGNORE_THUMBNAIL_LOAD |
		LOAD_CALC_IGNORE_NON_REALTIME_LOAD;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}
	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_ERR,
			"%s: inst %pK is in invalid state\n", __func__, inst);
		return -EINVAL;
	}
	if (IS_ALREADY_IN_STATE(flipped_state, MSM_VIDC_LOAD_RESOURCES)) {
		dprintk(VIDC_INFO, "inst: %pK is already in state: %d\n",
						inst, inst->state);
		goto exit;
	}
	core = inst->core;

	num_mbs_per_sec =
		msm_comm_get_load(core, MSM_VIDC_DECODER, quirks) +
		msm_comm_get_load(core, MSM_VIDC_ENCODER, quirks);

	max_load_adj = core->resources.max_load +
		inst->capability.mbs_per_frame.max;

	if (num_mbs_per_sec > max_load_adj) {
		dprintk(VIDC_ERR, "HW is overloaded, needed: %d max: %d\n",
			num_mbs_per_sec, max_load_adj);
		msm_vidc_print_running_insts(core);
		msm_comm_kill_session(inst);
		return -EBUSY;
	}

	hdev = core->device;
	dprintk(VIDC_DBG, "%s: inst %pK\n", __func__, inst);
	rc = call_hfi_op(hdev, session_load_res, (void *) inst->session);
	if (rc) {
		dprintk(VIDC_ERR,
			"Failed to send load resources\n");
		goto exit;
	}
	change_inst_state(inst, MSM_VIDC_LOAD_RESOURCES);
exit:
	return rc;
}

static int msm_vidc_start(int flipped_state, struct msm_vidc_inst *inst)
{
	int rc = 0;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}
	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_ERR,
			"%s: inst %pK is in invalid\n", __func__, inst);
		return -EINVAL;
	}
	if (IS_ALREADY_IN_STATE(flipped_state, MSM_VIDC_START)) {
		dprintk(VIDC_INFO,
			"inst: %pK is already in state: %d\n",
			inst, inst->state);
		goto exit;
	}
	hdev = inst->core->device;
	dprintk(VIDC_DBG, "%s: inst %pK\n", __func__, inst);
	rc = call_hfi_op(hdev, session_start, (void *) inst->session);
	if (rc) {
		dprintk(VIDC_ERR,
			"Failed to send start\n");
		goto exit;
	}
	change_inst_state(inst, MSM_VIDC_START);
exit:
	return rc;
}

static int msm_vidc_stop(int flipped_state, struct msm_vidc_inst *inst)
{
	int rc = 0;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}
	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_ERR,
			"%s: inst %pK is in invalid state\n", __func__, inst);
		return -EINVAL;
	}
	if (IS_ALREADY_IN_STATE(flipped_state, MSM_VIDC_STOP)) {
		dprintk(VIDC_INFO,
			"inst: %pK is already in state: %d\n",
			inst, inst->state);
		goto exit;
	}
	hdev = inst->core->device;
	dprintk(VIDC_DBG, "%s: inst %pK\n", __func__, inst);
	rc = call_hfi_op(hdev, session_stop, (void *) inst->session);
	if (rc) {
		dprintk(VIDC_ERR, "%s: inst %pK session_stop failed\n",
				__func__, inst);
		goto exit;
	}
	change_inst_state(inst, MSM_VIDC_STOP);
exit:
	return rc;
}

static int msm_vidc_release_res(int flipped_state, struct msm_vidc_inst *inst)
{
	int rc = 0;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}
	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_ERR,
			"%s: inst %pK is in invalid state\n", __func__, inst);
		return -EINVAL;
	}
	if (IS_ALREADY_IN_STATE(flipped_state, MSM_VIDC_RELEASE_RESOURCES)) {
		dprintk(VIDC_INFO,
			"inst: %pK is already in state: %d\n",
			inst, inst->state);
		goto exit;
	}
	hdev = inst->core->device;
	dprintk(VIDC_DBG, "%s: inst %pK\n", __func__, inst);
	rc = call_hfi_op(hdev, session_release_res, (void *) inst->session);
	if (rc) {
		dprintk(VIDC_ERR,
			"Failed to send release resources\n");
		goto exit;
	}
	change_inst_state(inst, MSM_VIDC_RELEASE_RESOURCES);
exit:
	return rc;
}

static int msm_comm_session_close(int flipped_state,
			struct msm_vidc_inst *inst)
{
	int rc = 0;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid params\n", __func__);
		return -EINVAL;
	}
	if (IS_ALREADY_IN_STATE(flipped_state, MSM_VIDC_CLOSE)) {
		dprintk(VIDC_INFO,
			"inst: %pK is already in state: %d\n",
						inst, inst->state);
		goto exit;
	}
	hdev = inst->core->device;
	dprintk(VIDC_DBG, "%s: inst %pK\n", __func__, inst);
	rc = call_hfi_op(hdev, session_end, (void *) inst->session);
	if (rc) {
		dprintk(VIDC_ERR,
			"Failed to send close\n");
		goto exit;
	}
	change_inst_state(inst, MSM_VIDC_CLOSE);
exit:
	return rc;
}

int msm_comm_suspend(int core_id)
{
	struct hfi_device *hdev;
	struct msm_vidc_core *core;
	int rc = 0;

	core = get_vidc_core(core_id);
	if (!core) {
		dprintk(VIDC_ERR,
			"%s: Failed to find core for core_id = %d\n",
			__func__, core_id);
		return -EINVAL;
	}

	hdev = (struct hfi_device *)core->device;
	if (!hdev) {
		dprintk(VIDC_ERR, "%s Invalid device handle\n", __func__);
		return -EINVAL;
	}

	rc = call_hfi_op(hdev, suspend, hdev->hfi_device_data);
	if (rc)
		dprintk(VIDC_WARN, "Failed to suspend\n");

	return rc;
}

static int get_flipped_state(int present_state,
	int desired_state)
{
	int flipped_state = present_state;

	if (flipped_state < MSM_VIDC_STOP
			&& desired_state > MSM_VIDC_STOP) {
		flipped_state = MSM_VIDC_STOP + (MSM_VIDC_STOP - flipped_state);
		flipped_state &= 0xFFFE;
		flipped_state = flipped_state - 1;
	} else if (flipped_state > MSM_VIDC_STOP
			&& desired_state < MSM_VIDC_STOP) {
		flipped_state = MSM_VIDC_STOP -
			(flipped_state - MSM_VIDC_STOP + 1);
		flipped_state &= 0xFFFE;
		flipped_state = flipped_state - 1;
	}
	return flipped_state;
}

struct hal_buffer_requirements *get_buff_req_buffer(
		struct msm_vidc_inst *inst, enum hal_buffer buffer_type)
{
	int i;

	for (i = 0; i < HAL_BUFFER_MAX; i++) {
		if (inst->buff_req.buffer[i].buffer_type == buffer_type)
			return &inst->buff_req.buffer[i];
	}
	return NULL;
}

static int set_output_buffers(struct msm_vidc_inst *inst,
	enum hal_buffer buffer_type)
{
	int rc = 0;
	struct internal_buf *binfo = NULL;
	u32 smem_flags = 0, buffer_size;
	struct hal_buffer_requirements *output_buf, *extradata_buf;
	int i;
	struct hfi_device *hdev;
	struct hal_buffer_size_minimum b;

	hdev = inst->core->device;

	output_buf = get_buff_req_buffer(inst, buffer_type);
	if (!output_buf) {
		dprintk(VIDC_DBG,
			"This output buffer not required, buffer_type: %x\n",
			buffer_type);
		return 0;
	}

	/* For DPB buffers, Always use FW count */
	output_buf->buffer_count_actual = output_buf->buffer_count_min_host =
		output_buf->buffer_count_min;

	dprintk(VIDC_DBG,
		"output: num = %d, size = %d\n",
		output_buf->buffer_count_actual,
		output_buf->buffer_size);

	buffer_size = output_buf->buffer_size;
	b.buffer_type = buffer_type;
	b.buffer_size = buffer_size;
	rc = call_hfi_op(hdev, session_set_property,
		inst->session, HAL_PARAM_BUFFER_SIZE_MINIMUM,
		&b);

	extradata_buf = get_buff_req_buffer(inst, HAL_BUFFER_EXTRADATA_OUTPUT);
	if (extradata_buf) {
		dprintk(VIDC_DBG,
			"extradata: num = %d, size = %d\n",
			extradata_buf->buffer_count_actual,
			extradata_buf->buffer_size);
		buffer_size += extradata_buf->buffer_size;
	} else {
		dprintk(VIDC_DBG,
			"This extradata buffer not required, buffer_type: %x\n",
			buffer_type);
	}

	if (inst->flags & VIDC_SECURE)
		smem_flags |= SMEM_SECURE;

	if (output_buf->buffer_size) {
		for (i = 0; i < output_buf->buffer_count_actual;
				i++) {
			binfo = kzalloc(sizeof(*binfo), GFP_KERNEL);
			if (!binfo) {
				dprintk(VIDC_ERR, "Out of memory\n");
				rc = -ENOMEM;
				goto fail_kzalloc;
			}
			rc = msm_comm_smem_alloc(inst,
					buffer_size, 1, smem_flags,
					buffer_type, 0, &binfo->smem);
			if (rc) {
				dprintk(VIDC_ERR,
					"Failed to allocate output memory\n");
				goto err_no_mem;
			}
			rc = msm_comm_smem_cache_operations(inst,
					&binfo->smem, SMEM_CACHE_CLEAN);
			if (rc) {
				dprintk(VIDC_WARN,
					"Failed to clean cache may cause undefined behavior\n");
			}
			binfo->buffer_type = buffer_type;
			binfo->buffer_ownership = DRIVER;
			dprintk(VIDC_DBG, "Output buffer address: %#x\n",
					binfo->smem.device_addr);

			if (inst->buffer_mode_set[CAPTURE_PORT] ==
				HAL_BUFFER_MODE_STATIC) {
				struct vidc_buffer_addr_info buffer_info = {0};

				buffer_info.buffer_size =
					output_buf->buffer_size;
				buffer_info.buffer_type = buffer_type;
				buffer_info.num_buffers = 1;
				buffer_info.align_device_addr =
					binfo->smem.device_addr;
				buffer_info.extradata_addr =
					binfo->smem.device_addr +
					output_buf->buffer_size;
				if (extradata_buf)
					buffer_info.extradata_size =
						extradata_buf->buffer_size;
				rc = call_hfi_op(hdev, session_set_buffers,
					(void *) inst->session, &buffer_info);
				if (rc) {
					dprintk(VIDC_ERR,
						"%s : session_set_buffers failed\n",
						__func__);
					goto fail_set_buffers;
				}
			}
			mutex_lock(&inst->outputbufs.lock);
			list_add_tail(&binfo->list, &inst->outputbufs.list);
			mutex_unlock(&inst->outputbufs.lock);
		}
	}
	return rc;
fail_set_buffers:
	msm_comm_smem_free(inst, &binfo->smem);
err_no_mem:
	kfree(binfo);
fail_kzalloc:
	return rc;
}

static inline char *get_buffer_name(enum hal_buffer buffer_type)
{
	switch (buffer_type) {
	case HAL_BUFFER_INPUT: return "input";
	case HAL_BUFFER_OUTPUT: return "output";
	case HAL_BUFFER_OUTPUT2: return "output_2";
	case HAL_BUFFER_EXTRADATA_INPUT: return "input_extra";
	case HAL_BUFFER_EXTRADATA_OUTPUT: return "output_extra";
	case HAL_BUFFER_EXTRADATA_OUTPUT2: return "output2_extra";
	case HAL_BUFFER_INTERNAL_SCRATCH: return "scratch";
	case HAL_BUFFER_INTERNAL_SCRATCH_1: return "scratch_1";
	case HAL_BUFFER_INTERNAL_SCRATCH_2: return "scratch_2";
	case HAL_BUFFER_INTERNAL_PERSIST: return "persist";
	case HAL_BUFFER_INTERNAL_PERSIST_1: return "persist_1";
	case HAL_BUFFER_INTERNAL_CMD_QUEUE: return "queue";
	default: return "????";
	}
}

static int set_internal_buf_on_fw(struct msm_vidc_inst *inst,
				enum hal_buffer buffer_type,
				struct msm_smem *handle, bool reuse)
{
	struct vidc_buffer_addr_info buffer_info;
	struct hfi_device *hdev;
	int rc = 0;

	if (!inst || !inst->core || !inst->core->device || !handle) {
		dprintk(VIDC_ERR, "%s - invalid params\n", __func__);
		return -EINVAL;
	}

	hdev = inst->core->device;

	rc = msm_comm_smem_cache_operations(inst,
					handle, SMEM_CACHE_CLEAN);
	if (rc) {
		dprintk(VIDC_WARN,
			"Failed to clean cache. Undefined behavior\n");
	}

	buffer_info.buffer_size = handle->size;
	buffer_info.buffer_type = buffer_type;
	buffer_info.num_buffers = 1;
	buffer_info.align_device_addr = handle->device_addr;
	dprintk(VIDC_DBG, "%s %s buffer : %x\n",
				reuse ? "Reusing" : "Allocated",
				get_buffer_name(buffer_type),
				buffer_info.align_device_addr);

	rc = call_hfi_op(hdev, session_set_buffers,
		(void *) inst->session, &buffer_info);
	if (rc) {
		dprintk(VIDC_ERR,
			"vidc_hal_session_set_buffers failed\n");
		return rc;
	}
	return 0;
}

static bool reuse_internal_buffers(struct msm_vidc_inst *inst,
		enum hal_buffer buffer_type, struct msm_vidc_list *buf_list)
{
	struct internal_buf *buf;
	int rc = 0;
	bool reused = false;

	if (!inst || !buf_list) {
		dprintk(VIDC_ERR, "%s: invalid params\n", __func__);
		return false;
	}

	mutex_lock(&buf_list->lock);
	list_for_each_entry(buf, &buf_list->list, list) {
		if (buf->buffer_type != buffer_type)
			continue;

		/*
		 * Persist buffer size won't change with resolution. If they
		 * are in queue means that they are already allocated and
		 * given to HW. HW can use them without reallocation. These
		 * buffers are not released as part of port reconfig. So
		 * driver no need to set them again.
		 */

		if (buffer_type != HAL_BUFFER_INTERNAL_PERSIST
			&& buffer_type != HAL_BUFFER_INTERNAL_PERSIST_1) {

			rc = set_internal_buf_on_fw(inst, buffer_type,
					&buf->smem, true);
			if (rc) {
				dprintk(VIDC_ERR,
					"%s: session_set_buffers failed\n",
					__func__);
				reused = false;
				break;
			}
		}
		reused = true;
		dprintk(VIDC_DBG,
			"Re-using internal buffer type : %d\n", buffer_type);
	}
	mutex_unlock(&buf_list->lock);
	return reused;
}

static int allocate_and_set_internal_bufs(struct msm_vidc_inst *inst,
			struct hal_buffer_requirements *internal_bufreq,
			struct msm_vidc_list *buf_list)
{
	struct internal_buf *binfo;
	u32 smem_flags = 0;
	int rc = 0;
	int i = 0;

	if (!inst || !internal_bufreq || !buf_list)
		return -EINVAL;

	if (!internal_bufreq->buffer_size)
		return 0;

	if (inst->flags & VIDC_SECURE)
		smem_flags |= SMEM_SECURE;

	for (i = 0; i < internal_bufreq->buffer_count_actual; i++) {
		binfo = kzalloc(sizeof(*binfo), GFP_KERNEL);
		if (!binfo) {
			dprintk(VIDC_ERR, "Out of memory\n");
			rc = -ENOMEM;
			goto fail_kzalloc;
		}
		rc = msm_comm_smem_alloc(inst, internal_bufreq->buffer_size,
				1, smem_flags, internal_bufreq->buffer_type,
				0, &binfo->smem);
		if (rc) {
			dprintk(VIDC_ERR,
				"Failed to allocate scratch memory\n");
			goto err_no_mem;
		}

		binfo->buffer_type = internal_bufreq->buffer_type;

		rc = set_internal_buf_on_fw(inst, internal_bufreq->buffer_type,
				&binfo->smem, false);
		if (rc)
			goto fail_set_buffers;

		mutex_lock(&buf_list->lock);
		list_add_tail(&binfo->list, &buf_list->list);
		mutex_unlock(&buf_list->lock);
	}
	return rc;

fail_set_buffers:
	msm_comm_smem_free(inst, &binfo->smem);
err_no_mem:
	kfree(binfo);
fail_kzalloc:
	return rc;

}

static int set_internal_buffers(struct msm_vidc_inst *inst,
	enum hal_buffer buffer_type, struct msm_vidc_list *buf_list)
{
	struct hal_buffer_requirements *internal_buf;

	internal_buf = get_buff_req_buffer(inst, buffer_type);
	if (!internal_buf) {
		dprintk(VIDC_DBG,
			"This internal buffer not required, buffer_type: %x\n",
			buffer_type);
		return 0;
	}

	dprintk(VIDC_DBG, "Buffer type %s: num = %d, size = %d\n",
		get_buffer_name(buffer_type),
		internal_buf->buffer_count_actual, internal_buf->buffer_size);

	/*
	 * Try reusing existing internal buffers first.
	 * If it's not possible to reuse, allocate new buffers.
	 */
	if (reuse_internal_buffers(inst, buffer_type, buf_list))
		return 0;

	return allocate_and_set_internal_bufs(inst, internal_buf,
				buf_list);
}

int msm_comm_try_state(struct msm_vidc_inst *inst, int state)
{
	int rc = 0;
	int flipped_state;

	if (!inst) {
		dprintk(VIDC_ERR, "%s: invalid params %pK", __func__, inst);
		return -EINVAL;
	}
	dprintk(VIDC_DBG,
			"Trying to move inst: %pK from: %#x to %#x\n",
			inst, inst->state, state);

	mutex_lock(&inst->sync_lock);
	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_ERR, "%s: inst %pK is in invalid\n",
			__func__, inst);
		rc = -EINVAL;
		goto exit;
	}

	flipped_state = get_flipped_state(inst->state, state);
	dprintk(VIDC_DBG,
			"flipped_state = %#x\n", flipped_state);
	switch (flipped_state) {
	case MSM_VIDC_CORE_UNINIT_DONE:
	case MSM_VIDC_CORE_INIT:
		rc = msm_comm_init_core(inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_CORE_INIT_DONE:
		rc = msm_comm_init_core_done(inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_OPEN:
		rc = msm_comm_session_init(flipped_state, inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_OPEN_DONE:
		rc = msm_comm_session_init_done(flipped_state, inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_LOAD_RESOURCES:
		rc = msm_vidc_load_resources(flipped_state, inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_LOAD_RESOURCES_DONE:
	case MSM_VIDC_START:
		rc = msm_vidc_start(flipped_state, inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_START_DONE:
		rc = wait_for_state(inst, flipped_state, MSM_VIDC_START_DONE,
				HAL_SESSION_START_DONE);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_STOP:
		rc = msm_vidc_stop(flipped_state, inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_STOP_DONE:
		rc = wait_for_state(inst, flipped_state, MSM_VIDC_STOP_DONE,
				HAL_SESSION_STOP_DONE);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
		dprintk(VIDC_DBG, "Moving to Stop Done state\n");
	case MSM_VIDC_RELEASE_RESOURCES:
		rc = msm_vidc_release_res(flipped_state, inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_RELEASE_RESOURCES_DONE:
		rc = wait_for_state(inst, flipped_state,
			MSM_VIDC_RELEASE_RESOURCES_DONE,
			HAL_SESSION_RELEASE_RESOURCE_DONE);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
		dprintk(VIDC_DBG,
				"Moving to release resources done state\n");
	case MSM_VIDC_CLOSE:
		rc = msm_comm_session_close(flipped_state, inst);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
	case MSM_VIDC_CLOSE_DONE:
		rc = wait_for_state(inst, flipped_state, MSM_VIDC_CLOSE_DONE,
				HAL_SESSION_END_DONE);
		if (rc || state <= get_flipped_state(inst->state, state))
			break;
		msm_comm_session_clean(inst);
	case MSM_VIDC_CORE_UNINIT:
	case MSM_VIDC_CORE_INVALID:
		dprintk(VIDC_DBG, "Sending core uninit\n");
		rc = msm_vidc_deinit_core(inst);
		if (rc || state == get_flipped_state(inst->state, state))
			break;
	default:
		dprintk(VIDC_ERR, "State not recognized\n");
		rc = -EINVAL;
		break;
	}

exit:
	mutex_unlock(&inst->sync_lock);

	if (rc) {
		dprintk(VIDC_ERR,
				"Failed to move from state: %d to %d\n",
				inst->state, state);
		msm_comm_kill_session(inst);
	} else {
		trace_msm_vidc_common_state_change((void *)inst,
				inst->state, state);
	}
	return rc;
}

int msm_vidc_send_pending_eos_buffers(struct msm_vidc_inst *inst)
{
	struct vidc_frame_data data = {0};
	struct hfi_device *hdev;
	struct eos_buf *binfo = NULL, *temp = NULL;
	int rc = 0;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s: Invalid arguments\n", __func__);
		return -EINVAL;
	}

	mutex_lock(&inst->eosbufs.lock);
	list_for_each_entry_safe(binfo, temp, &inst->eosbufs.list, list) {
		data.alloc_len = binfo->smem.size;
		data.device_addr = binfo->smem.device_addr;
		data.clnt_data = data.device_addr;
		data.buffer_type = HAL_BUFFER_INPUT;
		data.filled_len = 0;
		data.offset = 0;
		data.flags = HAL_BUFFERFLAG_EOS;
		data.timestamp = LLONG_MAX;
		data.extradata_addr = data.device_addr;
		data.extradata_size = 0;
		dprintk(VIDC_DBG, "Queueing EOS buffer 0x%x\n",
				data.device_addr);
		hdev = inst->core->device;

		rc = call_hfi_op(hdev, session_etb, inst->session,
				&data);
	}
	mutex_unlock(&inst->eosbufs.lock);

	return rc;
}

int msm_vidc_comm_cmd(void *instance, union msm_v4l2_cmd *cmd)
{
	struct msm_vidc_inst *inst = instance;
	struct v4l2_decoder_cmd *dec = NULL;
	struct v4l2_encoder_cmd *enc = NULL;
	struct msm_vidc_core *core;
	int which_cmd = 0, flags = 0, rc = 0;

	if (!inst || !inst->core || !cmd) {
		dprintk(VIDC_ERR, "%s invalid params\n", __func__);
		return -EINVAL;
	}
	core = inst->core;
	if (inst->session_type == MSM_VIDC_ENCODER) {
		enc = (struct v4l2_encoder_cmd *)cmd;
		which_cmd = enc->cmd;
		flags = enc->flags;
	} else if (inst->session_type == MSM_VIDC_DECODER) {
		dec = (struct v4l2_decoder_cmd *)cmd;
		which_cmd = dec->cmd;
		flags = dec->flags;
	}


	switch (which_cmd) {
	case V4L2_QCOM_CMD_FLUSH:
		rc = msm_comm_flush(inst, flags);
		if (rc) {
			dprintk(VIDC_ERR,
				"Failed to flush buffers: %d\n", rc);
		}
		break;
	case V4L2_DEC_QCOM_CMD_RECONFIG_HINT:
	{
		u32 *ptr = NULL;
		struct hal_buffer_requirements *output_buf;

		rc = msm_comm_try_get_bufreqs(inst);
		if (rc) {
			dprintk(VIDC_ERR,
					"Getting buffer requirements failed: %d\n",
					rc);
			break;
		}

		output_buf = get_buff_req_buffer(inst,
				msm_comm_get_hal_output_buffer(inst));
		if (output_buf) {
			if (dec) {
				ptr = (u32 *)dec->raw.data;
				ptr[0] = output_buf->buffer_size;
				ptr[1] = output_buf->buffer_count_actual;
				dprintk(VIDC_DBG,
					"Reconfig hint, size is %u, count is %u\n",
					ptr[0], ptr[1]);
			} else {
				dprintk(VIDC_ERR, "Null decoder\n");
			}
		} else {
			dprintk(VIDC_DBG,
					"This output buffer not required, buffer_type: %x\n",
					HAL_BUFFER_OUTPUT);
		}
		break;
	}
	case V4L2_QCOM_CMD_SESSION_CONTINUE:
	{
		rc = msm_comm_session_continue(inst);
		break;
	}
	/* This case also for V4L2_ENC_CMD_STOP */
	case V4L2_DEC_CMD_STOP:
	{
		struct eos_buf *binfo = NULL;
		u32 smem_flags = 0;

		if (inst->state != MSM_VIDC_START_DONE) {
			dprintk(VIDC_DBG,
				"Inst = %pK is not ready for EOS\n", inst);
			break;
		}

		binfo = kzalloc(sizeof(*binfo), GFP_KERNEL);
		if (!binfo) {
			dprintk(VIDC_ERR, "%s: Out of memory\n", __func__);
			rc = -ENOMEM;
			break;
		}

		if (inst->flags & VIDC_SECURE)
			smem_flags |= SMEM_SECURE;

		rc = msm_comm_smem_alloc(inst,
				SZ_4K, 1, smem_flags,
				HAL_BUFFER_INPUT, 0, &binfo->smem);
		if (rc) {
			kfree(binfo);
			dprintk(VIDC_ERR,
				"Failed to allocate output memory\n");
			rc = -ENOMEM;
			break;
		}

		mutex_lock(&inst->eosbufs.lock);
		list_add_tail(&binfo->list, &inst->eosbufs.list);
		mutex_unlock(&inst->eosbufs.lock);

		rc = msm_vidc_send_pending_eos_buffers(inst);
		if (rc) {
			dprintk(VIDC_ERR,
				"Failed pending_eos_buffers sending\n");
			list_del(&binfo->list);
			kfree(binfo);
			break;
		}
		break;
	}
	default:
		dprintk(VIDC_ERR, "Unknown Command %d\n", which_cmd);
		rc = -ENOTSUPP;
		break;
	}
	return rc;
}

static void populate_frame_data(struct vidc_frame_data *data,
		struct msm_vidc_buffer *mbuf, struct msm_vidc_inst *inst)
{
	u64 time_usec;
	int extra_idx;
	struct vb2_buffer *vb;
	struct vb2_v4l2_buffer *vbuf;

	if (!inst || !mbuf || !data) {
		dprintk(VIDC_ERR, "%s: invalid params %pK %pK %pK\n",
			__func__, inst, mbuf, data);
		return;
	}

	vb = &mbuf->vvb.vb2_buf;
	vbuf = to_vb2_v4l2_buffer(vb);

	time_usec = vb->timestamp;
	do_div(time_usec, NSEC_PER_USEC);

	data->alloc_len = vb->planes[0].length;
	data->device_addr = mbuf->smem[0].device_addr;
	data->timestamp = time_usec;
	data->flags = 0;
	data->clnt_data = data->device_addr;

	if (vb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
		data->buffer_type = HAL_BUFFER_INPUT;
		data->filled_len = vb->planes[0].bytesused;
		data->offset = vb->planes[0].data_offset;

		if (vbuf->flags & V4L2_QCOM_BUF_FLAG_EOS)
			data->flags |= HAL_BUFFERFLAG_EOS;

		if (vbuf->flags & V4L2_QCOM_BUF_FLAG_CODECCONFIG)
			data->flags |= HAL_BUFFERFLAG_CODECCONFIG;

		if (vbuf->flags & V4L2_QCOM_BUF_FLAG_DECODEONLY)
			data->flags |= HAL_BUFFERFLAG_DECODEONLY;

		if (vbuf->flags & V4L2_QCOM_BUF_TIMESTAMP_INVALID)
			data->timestamp = LLONG_MAX;

		if (inst->session_type == MSM_VIDC_DECODER) {
			msm_comm_fetch_mark_data(&inst->etb_data, vb->index,
				&data->mark_data, &data->mark_target);
		}

	} else if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
		data->buffer_type = msm_comm_get_hal_output_buffer(inst);
	}

	extra_idx = EXTRADATA_IDX(vb->num_planes);
	if (extra_idx && extra_idx < VIDEO_MAX_PLANES) {
		data->extradata_addr = mbuf->smem[extra_idx].device_addr;
		data->extradata_size = vb->planes[extra_idx].length;
		data->flags |= HAL_BUFFERFLAG_EXTRADATA;
	}
}

static unsigned int count_single_batch(struct msm_vidc_inst *inst,
		enum v4l2_buf_type type)
{
	int count = 0;
	struct msm_vidc_buffer *mbuf = NULL;

	mutex_lock(&inst->registeredbufs.lock);
	list_for_each_entry(mbuf, &inst->registeredbufs.list, list) {
		if (mbuf->vvb.vb2_buf.type != type)
			continue;

		/* count only deferred buffers */
		if (!(mbuf->flags & MSM_VIDC_FLAG_DEFERRED))
			continue;

		++count;

		if (!(mbuf->vvb.flags & V4L2_MSM_BUF_FLAG_DEFER))
			goto found_batch;
	}
	/* don't have a full batch */
	count = 0;

found_batch:
	mutex_unlock(&inst->registeredbufs.lock);
	return count;
}

static unsigned int count_buffers(struct msm_vidc_inst *inst,
		enum v4l2_buf_type type)
{
	struct msm_vidc_buffer *mbuf;
	int count = 0;

	mutex_lock(&inst->registeredbufs.lock);
	list_for_each_entry(mbuf, &inst->registeredbufs.list, list) {
		if (mbuf->vvb.vb2_buf.type != type)
			continue;

		/* count only deferred buffers */
		if (!(mbuf->flags & MSM_VIDC_FLAG_DEFERRED))
			continue;

		++count;
	}
	mutex_unlock(&inst->registeredbufs.lock);

	return count;
}

static void log_frame(struct msm_vidc_inst *inst, struct vidc_frame_data *data,
		enum v4l2_buf_type type)
{

	if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
		dprintk(VIDC_DBG,
			"Sending etb (%x) to hal: filled: %d, ts: %lld, flags = %#x\n",
			data->device_addr, data->filled_len,
			data->timestamp, data->flags);
		msm_vidc_debugfs_update(inst, MSM_VIDC_DEBUGFS_EVENT_ETB);

	} else if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
		dprintk(VIDC_DBG,
			"Sending ftb (%x) to hal: size: %d, ts: %lld, flags = %#x\n",
			data->device_addr, data->alloc_len,
			data->timestamp, data->flags);
		msm_vidc_debugfs_update(inst, MSM_VIDC_DEBUGFS_EVENT_FTB);
	}
}

enum hal_buffer get_hal_buffer_type(unsigned int type,
		unsigned int plane_num)
{
	if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
		if (plane_num == 0)
			return HAL_BUFFER_INPUT;
		else
			return HAL_BUFFER_EXTRADATA_INPUT;
	} else if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
		if (plane_num == 0)
			return HAL_BUFFER_OUTPUT;
		else
			return HAL_BUFFER_EXTRADATA_OUTPUT;
	} else {
		return -EINVAL;
	}
}

static int msm_comm_qbuf_rbr(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf)
{
	int rc = 0;
	struct hfi_device *hdev;
	struct vidc_frame_data frame_data = {0};

	if (!inst || !inst->core || !inst->core->device || !mbuf) {
		dprintk(VIDC_ERR, "%s: Invalid arguments\n", __func__);
		return -EINVAL;
	}

	hdev = inst->core->device;

	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_ERR, "%s: inst is in bad state\n", __func__);
		return -EINVAL;
	}

	rc = msm_comm_scale_clocks_and_bus(inst);
	populate_frame_data(&frame_data, mbuf, inst);

	rc = call_hfi_op(hdev, session_ftb, inst->session, &frame_data);
	if (rc) {
		dprintk(VIDC_ERR, "Failed to issue ftb: %d\n", rc);
		goto err_bad_input;
	}

	log_frame(inst, &frame_data, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);

err_bad_input:
	return rc;
}


/*
 * Attempts to queue `vb` to hardware.  If, for various reasons, the buffer
 * cannot be queued to hardware, the buffer will be staged for commit in the
 * pending queue.  Once the hardware reaches a good state (or if `vb` is NULL,
 * the subsequent *_qbuf will commit the previously staged buffers to hardware.
 */
int msm_comm_qbuf(struct msm_vidc_inst *inst, struct msm_vidc_buffer *mbuf)
{
	int rc = 0, capture_count, output_count;
	struct msm_vidc_core *core;
	struct hfi_device *hdev;
	struct {
		struct vidc_frame_data *data;
		int count;
	} etbs, ftbs;
	bool defer = false, batch_mode;
	struct msm_vidc_buffer *temp = NULL, *next = NULL;

	if (!inst) {
		dprintk(VIDC_ERR, "%s: Invalid arguments\n", __func__);
		return -EINVAL;
	}

	core = inst->core;
	hdev = core->device;

	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_ERR, "%s: inst is in bad state\n", __func__);
		return -EINVAL;
	}

	batch_mode = msm_comm_g_ctrl_for_id(inst, V4L2_CID_VIDC_QBUF_MODE)
		== V4L2_VIDC_QBUF_BATCHED;
	capture_count = (batch_mode ? &count_single_batch : &count_buffers)
		(inst, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
	output_count = (batch_mode ? &count_single_batch : &count_buffers)
		(inst, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);

	if (!batch_mode && mbuf) {
		/*
		 * don't queue output_mplane buffers if buffer queued
		 * by client is capture_mplane type and vice versa.
		 */
		if (mbuf->vvb.vb2_buf.type ==
				V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
			output_count = 0;
		else if (mbuf->vvb.vb2_buf.type ==
				V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
			capture_count = 0;
	}

	/*
	 * Somewhat complicated logic to prevent queuing the buffer to hardware.
	 * Don't queue if:
	 * 1) Hardware isn't ready (that's simple)
	 */
	defer = defer ? defer : (inst->state != MSM_VIDC_START_DONE);

	/*
	 * 2) The client explicitly tells us not to because it wants this
	 * buffer to be batched with future frames.  The batch size (on both
	 * capabilities) is completely determined by the client.
	 */
	defer = defer ? defer :
		(mbuf && mbuf->vvb.flags & V4L2_MSM_BUF_FLAG_DEFER);

	/* 3) If we're in batch mode, we must have full batches of both types */
	defer = defer ? defer:(batch_mode && (!output_count || !capture_count));

	if (defer) {
		if (mbuf) {
			mbuf->flags |= MSM_VIDC_FLAG_DEFERRED;
			print_vidc_buffer(VIDC_DBG, "deferred qbuf",
				inst, mbuf);
		}
		return 0;
	}

	rc = msm_comm_scale_clocks_and_bus(inst);

	dprintk(VIDC_DBG, "%sing %d etbs and %d ftbs\n",
			batch_mode ? "Batch" : "Process",
			output_count, capture_count);

	etbs.data = kcalloc(output_count, sizeof(*etbs.data), GFP_KERNEL);
	ftbs.data = kcalloc(capture_count, sizeof(*ftbs.data), GFP_KERNEL);
	/*
	 * Note that it's perfectly normal for (e|f)tbs.data to be NULL if
	 * we're not in batch mode (i.e. (output|capture)_count == 0)
	 */
	if ((!etbs.data && output_count) ||
			(!ftbs.data && capture_count)) {
		dprintk(VIDC_ERR, "Failed to alloc memory for batching\n");
		kfree(etbs.data);
		etbs.data = NULL;

		kfree(ftbs.data);
		ftbs.data = NULL;
		goto err_no_mem;
	}

	etbs.count = ftbs.count = 0;

	/*
	 * Try to collect all deferred buffers into 2 batches of ftb and etb
	 * Note that these "batches" might be empty if we're no in batching mode
	 * and the deferred is not set for buffers.
	 */
	mutex_lock(&inst->registeredbufs.lock);
	list_for_each_entry_safe(temp, next, &inst->registeredbufs.list, list) {
		struct vidc_frame_data *frame_data = NULL;

		if (!(temp->flags & MSM_VIDC_FLAG_DEFERRED))
			continue;

		switch (temp->vvb.vb2_buf.type) {
		case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
			if (ftbs.count < capture_count && ftbs.data)
				frame_data = &ftbs.data[ftbs.count++];
			break;
		case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
			if (etbs.count < output_count && etbs.data)
				frame_data = &etbs.data[etbs.count++];
			break;
		default:
			break;
		}

		if (!frame_data)
			continue;

		populate_frame_data(frame_data, temp, inst);

		/* this buffer going to be queued (not deferred) */
		temp->flags &= ~MSM_VIDC_FLAG_DEFERRED;

		print_vidc_buffer(VIDC_DBG, "qbuf", inst, temp);
	}
	mutex_unlock(&inst->registeredbufs.lock);

	/* Finally commit all our frame(s) to H/W */
	if (batch_mode) {
		int ftb_index = 0, c = 0;

		ftb_index = c;
		rc = call_hfi_op(hdev, session_process_batch, inst->session,
				etbs.count, etbs.data,
				ftbs.count - ftb_index, &ftbs.data[ftb_index]);
		if (rc) {
			dprintk(VIDC_ERR,
				"Failed to queue batch of %d ETBs and %d FTBs\n",
				etbs.count, ftbs.count);
			goto err_bad_input;
		}

		for (c = ftb_index; c < ftbs.count; ++c) {
			log_frame(inst, &ftbs.data[c],
					V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
		}

		for (c = 0; c < etbs.count; ++c) {
			log_frame(inst, &etbs.data[c],
					V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
		}
	}

	if (!batch_mode && etbs.count) {
		int c = 0;

		for (c = 0; c < etbs.count; ++c) {
			struct vidc_frame_data *frame_data = &etbs.data[c];

			rc = call_hfi_op(hdev, session_etb, inst->session,
					frame_data);
			if (rc) {
				dprintk(VIDC_ERR, "Failed to issue etb: %d\n",
						rc);
				goto err_bad_input;
			}

			log_frame(inst, frame_data,
					V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
		}
	}

	if (!batch_mode && ftbs.count) {
		int c = 0;

		for (; c < ftbs.count; ++c) {
			struct vidc_frame_data *frame_data = &ftbs.data[c];

			rc = call_hfi_op(hdev, session_ftb,
					inst->session, frame_data);
			if (rc) {
				dprintk(VIDC_ERR, "Failed to issue ftb: %d\n",
						rc);
				goto err_bad_input;
			}

			log_frame(inst, frame_data,
					V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
		}
	}

err_bad_input:
	if (rc)
		dprintk(VIDC_ERR, "Failed to queue buffer\n");

	kfree(etbs.data);
	kfree(ftbs.data);
err_no_mem:
	return rc;
}

int msm_vidc_update_host_buff_counts(struct msm_vidc_inst *inst)
{
	int extra_buffers;
	struct hal_buffer_requirements *bufreq;

	bufreq = get_buff_req_buffer(inst,
		HAL_BUFFER_INPUT);
	if (!bufreq) {
		dprintk(VIDC_ERR,
			"Failed : No buffer requirements : %x\n",
				HAL_BUFFER_INPUT);
		return -EINVAL;
	}
	extra_buffers = msm_vidc_get_extra_buff_count(inst, HAL_BUFFER_INPUT);
	bufreq->buffer_count_min_host = bufreq->buffer_count_min +
		extra_buffers;
	bufreq = get_buff_req_buffer(inst, HAL_BUFFER_EXTRADATA_INPUT);
	if (bufreq) {
		if (bufreq->buffer_count_min)
			bufreq->buffer_count_min_host =
				bufreq->buffer_count_min + extra_buffers;
	}

	if (msm_comm_get_stream_output_mode(inst) ==
			HAL_VIDEO_DECODER_SECONDARY) {

		bufreq = get_buff_req_buffer(inst,
				HAL_BUFFER_OUTPUT);
		if (!bufreq) {
			dprintk(VIDC_ERR,
				"Failed : No buffer requirements : %x\n",
					HAL_BUFFER_OUTPUT);
			return -EINVAL;
		}

		/* For DPB buffers, no need to add Extra buffers */
		bufreq->buffer_count_min_host =	bufreq->buffer_count_actual =
			bufreq->buffer_count_min;

		bufreq = get_buff_req_buffer(inst,
				HAL_BUFFER_OUTPUT2);
		if (!bufreq) {
			dprintk(VIDC_ERR,
				"Failed : No buffer requirements : %x\n",
					HAL_BUFFER_OUTPUT2);
			return -EINVAL;
		}

		extra_buffers = msm_vidc_get_extra_buff_count(inst,
			HAL_BUFFER_OUTPUT);

		bufreq->buffer_count_min_host =	bufreq->buffer_count_actual =
			bufreq->buffer_count_min + extra_buffers;

		bufreq = get_buff_req_buffer(inst,
				HAL_BUFFER_EXTRADATA_OUTPUT2);
		if (!bufreq) {
			dprintk(VIDC_DBG,
				"No buffer requirements : %x\n",
					HAL_BUFFER_EXTRADATA_OUTPUT2);
		} else {
			if (bufreq->buffer_count_min) {
				bufreq->buffer_count_min_host =
				bufreq->buffer_count_actual =
				bufreq->buffer_count_min + extra_buffers;
			}
		}
	} else {

		bufreq = get_buff_req_buffer(inst,
				HAL_BUFFER_OUTPUT);
		if (!bufreq) {
			dprintk(VIDC_ERR,
				"Failed : No buffer requirements : %x\n",
					HAL_BUFFER_OUTPUT);
			return -EINVAL;
		}

		extra_buffers = msm_vidc_get_extra_buff_count(inst,
			HAL_BUFFER_OUTPUT);

		bufreq->buffer_count_min_host =	bufreq->buffer_count_actual =
			bufreq->buffer_count_min + extra_buffers;

		bufreq = get_buff_req_buffer(inst,
				HAL_BUFFER_EXTRADATA_OUTPUT);
		if (!bufreq) {
			dprintk(VIDC_DBG,
				"No buffer requirements : %x\n",
				HAL_BUFFER_EXTRADATA_OUTPUT);
		} else {
			if (bufreq->buffer_count_min) {
				bufreq->buffer_count_min_host =
				bufreq->buffer_count_actual =
				bufreq->buffer_count_min + extra_buffers;
			}
		}
	}

	return 0;
}

int msm_comm_try_get_bufreqs(struct msm_vidc_inst *inst)
{
	int rc = 0, i = 0;
	union hal_get_property hprop;

	memset(&hprop, 0x0, sizeof(hprop));

	rc = msm_comm_try_get_prop(inst, HAL_PARAM_GET_BUFFER_REQUIREMENTS,
		&hprop);
	if (rc) {
		dprintk(VIDC_ERR, "Failed getting buffer requirements: %d", rc);
		return rc;
	}

	dprintk(VIDC_DBG, "Buffer requirements from HW:\n");
	dprintk(VIDC_DBG, "%15s %8s %8s %8s %8s\n",
		"buffer type", "count", "mincount_host", "mincount_fw", "size");
	for (i = 0; i < HAL_BUFFER_MAX; i++) {
		struct hal_buffer_requirements req = hprop.buf_req.buffer[i];

		inst->buff_req.buffer[i] = req;
		if (req.buffer_type != HAL_BUFFER_NONE) {
			dprintk(VIDC_DBG, "%15s %8d %8d %8d %8d\n",
				get_buffer_name(req.buffer_type),
				req.buffer_count_actual,
				req.buffer_count_min_host,
				req.buffer_count_min, req.buffer_size);
		}
	}
	if (inst->session_type == MSM_VIDC_ENCODER)
		rc = msm_vidc_update_host_buff_counts(inst);

	dprintk(VIDC_DBG, "Buffer requirements host adjusted:\n");
	dprintk(VIDC_DBG, "%15s %8s %8s %8s %8s\n",
		"buffer type", "count", "mincount_host", "mincount_fw", "size");
	for (i = 0; i < HAL_BUFFER_MAX; i++) {
		struct hal_buffer_requirements req = inst->buff_req.buffer[i];

		if (req.buffer_type != HAL_BUFFER_NONE) {
			dprintk(VIDC_DBG, "%15s %8d %8d %8d %8d\n",
				get_buffer_name(req.buffer_type),
				req.buffer_count_actual,
				req.buffer_count_min_host,
				req.buffer_count_min, req.buffer_size);
		}
	}
	return rc;
}

int msm_comm_try_get_prop(struct msm_vidc_inst *inst, enum hal_property ptype,
				union hal_get_property *hprop)
{
	int rc = 0;
	struct hfi_device *hdev;
	struct getprop_buf *buf;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	hdev = inst->core->device;
	mutex_lock(&inst->sync_lock);
	if (inst->state < MSM_VIDC_OPEN_DONE ||
			inst->state >= MSM_VIDC_CLOSE) {

		/* No need to check inst->state == MSM_VIDC_INVALID since
		 * INVALID is > CLOSE_DONE. When core went to INVALID state,
		 * we put all the active instances in INVALID. So > CLOSE_DONE
		 * is enough check to have.
		 */

		dprintk(VIDC_ERR,
			"In Wrong state to call Buf Req: Inst %pK or Core %pK\n",
				inst, inst->core);
		rc = -EAGAIN;
		mutex_unlock(&inst->sync_lock);
		goto exit;
	}
	mutex_unlock(&inst->sync_lock);

	switch (ptype) {
	case HAL_PARAM_GET_BUFFER_REQUIREMENTS:
		rc = call_hfi_op(hdev, session_get_buf_req, inst->session);
		break;
	default:
		rc = -EAGAIN;
		break;
	}

	if (rc) {
		dprintk(VIDC_ERR, "Can't query hardware for property: %d\n",
				rc);
		goto exit;
	}

	rc = wait_for_completion_timeout(&inst->completions[
			SESSION_MSG_INDEX(HAL_SESSION_PROPERTY_INFO)],
		msecs_to_jiffies(
			inst->core->resources.msm_vidc_hw_rsp_timeout));
	if (!rc) {
		dprintk(VIDC_ERR,
			"%s: Wait interrupted or timed out [%pK]: %d\n",
			__func__, inst,
			SESSION_MSG_INDEX(HAL_SESSION_PROPERTY_INFO));
		msm_comm_kill_session(inst);
		rc = -ETIMEDOUT;
		goto exit;
	} else {
		/* wait_for_completion_timeout returns jiffies before expiry */
		rc = 0;
	}

	mutex_lock(&inst->pending_getpropq.lock);
	if (!list_empty(&inst->pending_getpropq.list)) {
		buf = list_first_entry(&inst->pending_getpropq.list,
					struct getprop_buf, list);
		*hprop = *(union hal_get_property *)buf->data;
		kfree(buf->data);
		list_del(&buf->list);
		kfree(buf);
	} else {
		dprintk(VIDC_ERR, "%s getprop list empty\n", __func__);
		rc = -EINVAL;
	}
	mutex_unlock(&inst->pending_getpropq.lock);
exit:
	return rc;
}

int msm_comm_release_output_buffers(struct msm_vidc_inst *inst,
	bool force_release)
{
	struct msm_smem *handle;
	struct internal_buf *buf, *dummy;
	struct vidc_buffer_addr_info buffer_info;
	int rc = 0;
	struct msm_vidc_core *core;
	struct hfi_device *hdev;

	if (!inst) {
		dprintk(VIDC_ERR,
				"Invalid instance pointer = %pK\n", inst);
		return -EINVAL;
	}
	mutex_lock(&inst->outputbufs.lock);
	if (list_empty(&inst->outputbufs.list)) {
		dprintk(VIDC_DBG, "%s - No OUTPUT buffers allocated\n",
			__func__);
		mutex_unlock(&inst->outputbufs.lock);
		return 0;
	}
	mutex_unlock(&inst->outputbufs.lock);

	core = inst->core;
	if (!core) {
		dprintk(VIDC_ERR,
				"Invalid core pointer = %pK\n", core);
		return -EINVAL;
	}
	hdev = core->device;
	if (!hdev) {
		dprintk(VIDC_ERR, "Invalid device pointer = %pK\n", hdev);
		return -EINVAL;
	}
	mutex_lock(&inst->outputbufs.lock);
	list_for_each_entry_safe(buf, dummy, &inst->outputbufs.list, list) {
		handle = &buf->smem;

		if ((buf->buffer_ownership == FIRMWARE) && !force_release) {
			dprintk(VIDC_INFO, "DPB is with f/w. Can't free it\n");
			continue;
		}

		buffer_info.buffer_size = handle->size;
		buffer_info.buffer_type = buf->buffer_type;
		buffer_info.num_buffers = 1;
		buffer_info.align_device_addr = handle->device_addr;
		if (inst->buffer_mode_set[CAPTURE_PORT] ==
				HAL_BUFFER_MODE_STATIC) {
			buffer_info.response_required = false;
			rc = call_hfi_op(hdev, session_release_buffers,
				(void *)inst->session, &buffer_info);
			if (rc) {
				dprintk(VIDC_WARN,
					"Rel output buf fail:%x, %d\n",
					buffer_info.align_device_addr,
					buffer_info.buffer_size);
			}
		}

		list_del(&buf->list);
		msm_comm_smem_free(inst, &buf->smem);
		kfree(buf);
	}

	mutex_unlock(&inst->outputbufs.lock);
	return rc;
}

static enum hal_buffer scratch_buf_sufficient(struct msm_vidc_inst *inst,
				enum hal_buffer buffer_type)
{
	struct hal_buffer_requirements *bufreq = NULL;
	struct internal_buf *buf;
	int count = 0;

	if (!inst) {
		dprintk(VIDC_ERR, "%s - invalid param\n", __func__);
		goto not_sufficient;
	}

	bufreq = get_buff_req_buffer(inst, buffer_type);
	if (!bufreq)
		goto not_sufficient;

	/* Check if current scratch buffers are sufficient */
	mutex_lock(&inst->scratchbufs.lock);

	list_for_each_entry(buf, &inst->scratchbufs.list, list) {
		if (buf->buffer_type == buffer_type &&
			buf->smem.size >= bufreq->buffer_size)
			count++;
	}
	mutex_unlock(&inst->scratchbufs.lock);

	if (count != bufreq->buffer_count_actual)
		goto not_sufficient;

	dprintk(VIDC_DBG,
		"Existing scratch buffer is sufficient for buffer type %#x\n",
		buffer_type);

	return buffer_type;

not_sufficient:
	return HAL_BUFFER_NONE;
}

int msm_comm_release_scratch_buffers(struct msm_vidc_inst *inst,
					bool check_for_reuse)
{
	struct msm_smem *handle;
	struct internal_buf *buf, *dummy;
	struct vidc_buffer_addr_info buffer_info;
	int rc = 0;
	struct msm_vidc_core *core;
	struct hfi_device *hdev;
	enum hal_buffer sufficiency = HAL_BUFFER_NONE;

	if (!inst) {
		dprintk(VIDC_ERR,
				"Invalid instance pointer = %pK\n", inst);
		return -EINVAL;
	}
	core = inst->core;
	if (!core) {
		dprintk(VIDC_ERR,
				"Invalid core pointer = %pK\n", core);
		return -EINVAL;
	}
	hdev = core->device;
	if (!hdev) {
		dprintk(VIDC_ERR, "Invalid device pointer = %pK\n", hdev);
		return -EINVAL;
	}

	if (check_for_reuse) {
		sufficiency |= scratch_buf_sufficient(inst,
					HAL_BUFFER_INTERNAL_SCRATCH);

		sufficiency |= scratch_buf_sufficient(inst,
					HAL_BUFFER_INTERNAL_SCRATCH_1);

		sufficiency |= scratch_buf_sufficient(inst,
					HAL_BUFFER_INTERNAL_SCRATCH_2);
	}

	mutex_lock(&inst->scratchbufs.lock);
	list_for_each_entry_safe(buf, dummy, &inst->scratchbufs.list, list) {
		handle = &buf->smem;
		buffer_info.buffer_size = handle->size;
		buffer_info.buffer_type = buf->buffer_type;
		buffer_info.num_buffers = 1;
		buffer_info.align_device_addr = handle->device_addr;
		buffer_info.response_required = true;
		rc = call_hfi_op(hdev, session_release_buffers,
				(void *)inst->session, &buffer_info);
		if (!rc) {
			mutex_unlock(&inst->scratchbufs.lock);
			rc = wait_for_sess_signal_receipt(inst,
				HAL_SESSION_RELEASE_BUFFER_DONE);
			if (rc)
				dprintk(VIDC_WARN,
					"%s: wait for signal failed, rc %d\n",
					__func__, rc);
			mutex_lock(&inst->scratchbufs.lock);
		} else {
			dprintk(VIDC_WARN,
				"Rel scrtch buf fail:%x, %d\n",
				buffer_info.align_device_addr,
				buffer_info.buffer_size);
		}

		/*If scratch buffers can be reused, do not free the buffers*/
		if (sufficiency & buf->buffer_type)
			continue;

		list_del(&buf->list);
		msm_comm_smem_free(inst, handle);
		kfree(buf);
	}

	mutex_unlock(&inst->scratchbufs.lock);
	return rc;
}

void msm_comm_release_eos_buffers(struct msm_vidc_inst *inst)
{
	struct eos_buf *buf, *next;

	if (!inst) {
		dprintk(VIDC_ERR,
			"Invalid instance pointer = %pK\n", inst);
		return;
	}

	mutex_lock(&inst->eosbufs.lock);
	list_for_each_entry_safe(buf, next, &inst->eosbufs.list, list) {
		list_del(&buf->list);
		msm_comm_smem_free(inst, &buf->smem);
		kfree(buf);
	}
	INIT_LIST_HEAD(&inst->eosbufs.list);
	mutex_unlock(&inst->eosbufs.lock);
}


int msm_comm_release_recon_buffers(struct msm_vidc_inst *inst)
{
	struct recon_buf *buf, *next;

	if (!inst) {
		dprintk(VIDC_ERR,
			"Invalid instance pointer = %pK\n", inst);
		return -EINVAL;
	}

	mutex_lock(&inst->reconbufs.lock);
	list_for_each_entry_safe(buf, next, &inst->reconbufs.list, list) {
		list_del(&buf->list);
		kfree(buf);
	}
	INIT_LIST_HEAD(&inst->reconbufs.list);
	mutex_unlock(&inst->reconbufs.lock);

	return 0;
}

int msm_comm_release_persist_buffers(struct msm_vidc_inst *inst)
{
	struct msm_smem *handle;
	struct list_head *ptr, *next;
	struct internal_buf *buf;
	struct vidc_buffer_addr_info buffer_info;
	int rc = 0;
	struct msm_vidc_core *core;
	struct hfi_device *hdev;

	if (!inst) {
		dprintk(VIDC_ERR,
				"Invalid instance pointer = %pK\n", inst);
		return -EINVAL;
	}
	core = inst->core;
	if (!core) {
		dprintk(VIDC_ERR,
				"Invalid core pointer = %pK\n", core);
		return -EINVAL;
	}
	hdev = core->device;
	if (!hdev) {
		dprintk(VIDC_ERR, "Invalid device pointer = %pK\n", hdev);
		return -EINVAL;
	}

	mutex_lock(&inst->persistbufs.lock);
	list_for_each_safe(ptr, next, &inst->persistbufs.list) {
		buf = list_entry(ptr, struct internal_buf, list);
		handle = &buf->smem;
		buffer_info.buffer_size = handle->size;
		buffer_info.buffer_type = buf->buffer_type;
		buffer_info.num_buffers = 1;
		buffer_info.align_device_addr = handle->device_addr;
		buffer_info.response_required = true;
		rc = call_hfi_op(hdev, session_release_buffers,
				(void *)inst->session, &buffer_info);
		if (!rc) {
			mutex_unlock(&inst->persistbufs.lock);
			rc = wait_for_sess_signal_receipt(inst,
				HAL_SESSION_RELEASE_BUFFER_DONE);
			if (rc)
				dprintk(VIDC_WARN,
					"%s: wait for signal failed, rc %d\n",
					__func__, rc);
			mutex_lock(&inst->persistbufs.lock);
		} else {
			dprintk(VIDC_WARN,
				"Rel prst buf fail:%x, %d\n",
				buffer_info.align_device_addr,
				buffer_info.buffer_size);
		}
		list_del(&buf->list);
		msm_comm_smem_free(inst, handle);
		kfree(buf);
	}
	mutex_unlock(&inst->persistbufs.lock);
	return rc;
}

int msm_comm_try_set_prop(struct msm_vidc_inst *inst,
	enum hal_property ptype, void *pdata)
{
	int rc = 0;
	struct hfi_device *hdev;

	if (!inst) {
		dprintk(VIDC_ERR, "Invalid input: %pK\n", inst);
		return -EINVAL;
	}

	if (!inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}
	hdev = inst->core->device;

	mutex_lock(&inst->sync_lock);
	if (inst->state < MSM_VIDC_OPEN_DONE || inst->state >= MSM_VIDC_CLOSE) {
		dprintk(VIDC_ERR, "Not in proper state to set property\n");
		rc = -EAGAIN;
		goto exit;
	}
	rc = call_hfi_op(hdev, session_set_property, (void *)inst->session,
			ptype, pdata);
	if (rc)
		dprintk(VIDC_ERR, "Failed to set hal property for framesize\n");
exit:
	mutex_unlock(&inst->sync_lock);
	return rc;
}

int msm_comm_set_output_buffers(struct msm_vidc_inst *inst)
{
	int rc = 0;
	bool force_release = true;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	if (inst->fmts[OUTPUT_PORT].defer_outputs)
		force_release = false;

	if (msm_comm_release_output_buffers(inst, force_release))
		dprintk(VIDC_WARN, "Failed to release output buffers\n");

	rc = set_output_buffers(inst, HAL_BUFFER_OUTPUT);
	if (rc)
		goto error;
	return rc;
error:
	msm_comm_release_output_buffers(inst, true);
	return rc;
}

int msm_comm_set_scratch_buffers(struct msm_vidc_inst *inst)
{
	int rc = 0;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	if (msm_comm_release_scratch_buffers(inst, true))
		dprintk(VIDC_WARN, "Failed to release scratch buffers\n");

	rc = set_internal_buffers(inst, HAL_BUFFER_INTERNAL_SCRATCH,
		&inst->scratchbufs);
	if (rc)
		goto error;

	rc = set_internal_buffers(inst, HAL_BUFFER_INTERNAL_SCRATCH_1,
		&inst->scratchbufs);
	if (rc)
		goto error;

	rc = set_internal_buffers(inst, HAL_BUFFER_INTERNAL_SCRATCH_2,
		&inst->scratchbufs);
	if (rc)
		goto error;

	return rc;
error:
	msm_comm_release_scratch_buffers(inst, false);
	return rc;
}

int msm_comm_set_recon_buffers(struct msm_vidc_inst *inst)
{
	int rc = 0, i = 0;
	struct hal_buffer_requirements *internal_buf;
	struct recon_buf *binfo;
	struct msm_vidc_list *buf_list = &inst->reconbufs;

	if (!inst) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	if (inst->session_type == MSM_VIDC_ENCODER)
		internal_buf = get_buff_req_buffer(inst,
			HAL_BUFFER_INTERNAL_RECON);
	else if (inst->session_type == MSM_VIDC_DECODER)
		internal_buf = get_buff_req_buffer(inst,
			msm_comm_get_hal_output_buffer(inst));
	else
		return -EINVAL;

	if (!internal_buf || !internal_buf->buffer_count_actual) {
		dprintk(VIDC_DBG, "Inst : %pK Recon buffers not required\n",
			inst);
		return 0;
	}

	msm_comm_release_recon_buffers(inst);

	for (i = 0; i < internal_buf->buffer_count_actual; i++) {
		binfo = kzalloc(sizeof(*binfo), GFP_KERNEL);
		if (!binfo) {
			dprintk(VIDC_ERR, "Out of memory\n");
			rc = -ENOMEM;
			goto fail_kzalloc;
		}

		binfo->buffer_index = i;
		mutex_lock(&buf_list->lock);
		list_add_tail(&binfo->list, &buf_list->list);
		mutex_unlock(&buf_list->lock);
	}

fail_kzalloc:
	return rc;
}

int msm_comm_set_persist_buffers(struct msm_vidc_inst *inst)
{
	int rc = 0;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	rc = set_internal_buffers(inst, HAL_BUFFER_INTERNAL_PERSIST,
		&inst->persistbufs);
	if (rc)
		goto error;

	rc = set_internal_buffers(inst, HAL_BUFFER_INTERNAL_PERSIST_1,
		&inst->persistbufs);
	if (rc)
		goto error;
	return rc;
error:
	msm_comm_release_persist_buffers(inst);
	return rc;
}

static void msm_comm_flush_in_invalid_state(struct msm_vidc_inst *inst)
{
	struct list_head *ptr, *next;
	enum vidc_ports ports[] = {OUTPUT_PORT, CAPTURE_PORT};
	int c = 0;

	/* before flush ensure venus released all buffers */
	msm_comm_try_state(inst, MSM_VIDC_RELEASE_RESOURCES_DONE);

	for (c = 0; c < ARRAY_SIZE(ports); ++c) {
		enum vidc_ports port = ports[c];

		mutex_lock(&inst->bufq[port].lock);
		list_for_each_safe(ptr, next,
				&inst->bufq[port].vb2_bufq.queued_list) {
			struct vb2_buffer *vb = container_of(ptr,
					struct vb2_buffer, queued_entry);
			if (vb->state == VB2_BUF_STATE_ACTIVE) {
				vb->planes[0].bytesused = 0;
				print_vb2_buffer(VIDC_ERR, "flush in invalid",
					inst, vb);
				vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
			} else {
				dprintk(VIDC_WARN,
					"%s VB is in state %d not in ACTIVE state\n"
					, __func__, vb->state);
			}
		}
		mutex_unlock(&inst->bufq[port].lock);
	}
	msm_vidc_queue_v4l2_event(inst, V4L2_EVENT_MSM_VIDC_FLUSH_DONE);
	return;
}

int msm_comm_flush(struct msm_vidc_inst *inst, u32 flags)
{
	int i, rc =  0;
	bool ip_flush = false;
	bool op_flush = false;
	struct msm_vidc_buffer *mbuf, *next;
	struct msm_vidc_core *core;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR,
				"Invalid params, inst %pK\n", inst);
		return -EINVAL;
	}
	core = inst->core;
	hdev = core->device;

	ip_flush = flags & V4L2_QCOM_CMD_FLUSH_OUTPUT;
	op_flush = flags & V4L2_QCOM_CMD_FLUSH_CAPTURE;

	if (ip_flush && !op_flush) {
		dprintk(VIDC_WARN,
			"Input only flush not supported, making it flush all\n");
		op_flush = true;
		return 0;
	}

	msm_clock_data_reset(inst);

	if (inst->state == MSM_VIDC_CORE_INVALID) {
		dprintk(VIDC_ERR,
				"Core %pK and inst %pK are in bad state\n",
					core, inst);
		msm_comm_flush_in_invalid_state(inst);
		return 0;
	}

	mutex_lock(&inst->flush_lock);
	/* enable in flush */
	inst->in_flush = true;

	mutex_lock(&inst->registeredbufs.lock);
	list_for_each_entry_safe(mbuf, next, &inst->registeredbufs.list, list) {
		/* don't flush input buffers if input flush is not requested */
		if (!ip_flush && mbuf->vvb.vb2_buf.type ==
				V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
			continue;

		/* flush only deferred or rbr pending buffers */
		if (!(mbuf->flags & MSM_VIDC_FLAG_DEFERRED ||
			mbuf->flags & MSM_VIDC_FLAG_RBR_PENDING))
			continue;

		/*
		 * flush buffers which are queued by client already,
		 * the refcount will be two or more for those buffers.
		 */
		if (!(mbuf->smem[0].refcount >= 2))
			continue;

		print_vidc_buffer(VIDC_DBG, "flush buf", inst, mbuf);
		msm_comm_flush_vidc_buffer(inst, mbuf);

		for (i = 0; i < mbuf->vvb.vb2_buf.num_planes; i++) {
			if (msm_smem_unmap_dma_buf(inst, &mbuf->smem[i]))
				print_vidc_buffer(VIDC_ERR,
					"dqbuf: unmap failed.", inst, mbuf);
			if (msm_smem_unmap_dma_buf(inst, &mbuf->smem[i]))
				print_vidc_buffer(VIDC_ERR,
					"dqbuf: unmap failed..", inst, mbuf);
		}
		if (!mbuf->smem[0].refcount) {
			list_del(&mbuf->list);
			kref_put_mbuf(mbuf);
		} else {
			/* buffer is no more a deferred buffer */
			mbuf->flags &= ~MSM_VIDC_FLAG_DEFERRED;
		}
	}
	mutex_unlock(&inst->registeredbufs.lock);

	hdev = inst->core->device;
	if (ip_flush) {
		dprintk(VIDC_DBG, "Send flush on all ports to firmware\n");
		rc = call_hfi_op(hdev, session_flush, inst->session,
			HAL_FLUSH_ALL);
	} else {
		dprintk(VIDC_DBG, "Send flush on output port to firmware\n");
		rc = call_hfi_op(hdev, session_flush, inst->session,
			HAL_FLUSH_OUTPUT);
	}
	mutex_unlock(&inst->flush_lock);
	if (rc) {
		dprintk(VIDC_ERR,
			"Sending flush to firmware failed, flush out all buffers\n");
		msm_comm_flush_in_invalid_state(inst);
		/* disable in_flush */
		inst->in_flush = false;
	}

	return rc;
}

enum hal_extradata_id msm_comm_get_hal_extradata_index(
	enum v4l2_mpeg_vidc_extradata index)
{
	int ret = 0;

	switch (index) {
	case V4L2_MPEG_VIDC_EXTRADATA_NONE:
		ret = HAL_EXTRADATA_NONE;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_MB_QUANTIZATION:
		ret = HAL_EXTRADATA_MB_QUANTIZATION;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_INTERLACE_VIDEO:
		ret = HAL_EXTRADATA_INTERLACE_VIDEO;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_TIMESTAMP:
		ret = HAL_EXTRADATA_TIMESTAMP;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_S3D_FRAME_PACKING:
		ret = HAL_EXTRADATA_S3D_FRAME_PACKING;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_FRAME_RATE:
		ret = HAL_EXTRADATA_FRAME_RATE;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_PANSCAN_WINDOW:
		ret = HAL_EXTRADATA_PANSCAN_WINDOW;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_RECOVERY_POINT_SEI:
		ret = HAL_EXTRADATA_RECOVERY_POINT_SEI;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_MULTISLICE_INFO:
		ret = HAL_EXTRADATA_MULTISLICE_INFO;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_NUM_CONCEALED_MB:
		ret = HAL_EXTRADATA_NUM_CONCEALED_MB;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_METADATA_FILLER:
		ret = HAL_EXTRADATA_METADATA_FILLER;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_ASPECT_RATIO:
		ret = HAL_EXTRADATA_ASPECT_RATIO;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_INPUT_CROP:
		ret = HAL_EXTRADATA_INPUT_CROP;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_DIGITAL_ZOOM:
		ret = HAL_EXTRADATA_DIGITAL_ZOOM;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_MPEG2_SEQDISP:
		ret = HAL_EXTRADATA_MPEG2_SEQDISP;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_STREAM_USERDATA:
		ret = HAL_EXTRADATA_STREAM_USERDATA;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_FRAME_QP:
		ret = HAL_EXTRADATA_FRAME_QP;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_FRAME_BITS_INFO:
		ret = HAL_EXTRADATA_FRAME_BITS_INFO;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_LTR:
		ret = HAL_EXTRADATA_LTR_INFO;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_METADATA_MBI:
		ret = HAL_EXTRADATA_METADATA_MBI;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_VQZIP_SEI:
		ret = HAL_EXTRADATA_VQZIP_SEI;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_YUV_STATS:
		ret = HAL_EXTRADATA_YUV_STATS;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_ROI_QP:
		ret = HAL_EXTRADATA_ROI_QP;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_OUTPUT_CROP:
		ret = HAL_EXTRADATA_OUTPUT_CROP;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_DISPLAY_COLOUR_SEI:
		ret = HAL_EXTRADATA_MASTERING_DISPLAY_COLOUR_SEI;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_CONTENT_LIGHT_LEVEL_SEI:
		ret = HAL_EXTRADATA_CONTENT_LIGHT_LEVEL_SEI;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_PQ_INFO:
		ret = HAL_EXTRADATA_PQ_INFO;
		break;

	case V4L2_MPEG_VIDC_EXTRADATA_VUI_DISPLAY:
		ret = HAL_EXTRADATA_VUI_DISPLAY_INFO;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_VPX_COLORSPACE:
		ret = HAL_EXTRADATA_VPX_COLORSPACE;
		break;
	case V4L2_MPEG_VIDC_EXTRADATA_UBWC_CR_STATS_INFO:
		ret = HAL_EXTRADATA_UBWC_CR_STATS_INFO;
		break;
	default:
		dprintk(VIDC_WARN, "Extradata not found: %d\n", index);
		break;
	}
	return ret;
};

int msm_vidc_noc_error_info(struct msm_vidc_core *core)
{
	struct hfi_device *hdev;

	if (!core || !core->device) {
		dprintk(VIDC_WARN, "%s: Invalid parameters: %pK\n",
			__func__, core);
		return -EINVAL;
	}

	if (!core->resources.non_fatal_pagefaults)
		return 0;

	if (!core->smmu_fault_handled)
		return 0;

	hdev = core->device;
	call_hfi_op(hdev, noc_error_info, hdev->hfi_device_data);

	return 0;
}

int msm_vidc_trigger_ssr(struct msm_vidc_core *core,
	enum hal_ssr_trigger_type type)
{
	int rc = 0;
	struct hfi_device *hdev;
	int try_lock_counter = TRIGGER_SSR_LOCK_RETRIES;

	if (!core || !core->device) {
		dprintk(VIDC_WARN, "Invalid parameters: %pK\n", core);
		return -EINVAL;
	}
	hdev = core->device;

	while (try_lock_counter) {
		if (mutex_trylock(&core->lock))
			break;
		try_lock_counter--;
		if (!try_lock_counter)
			return -EBUSY;
	}
	if (core->state == VIDC_CORE_INIT_DONE) {
		/*
		 * In current implementation user-initiated SSR triggers
		 * a fatal error from hardware. However, there is no way
		 * to know if fatal error is due to SSR or not. Handle
		 * user SSR as non-fatal.
		 */
		core->trigger_ssr = true;
		rc = call_hfi_op(hdev, core_trigger_ssr,
				hdev->hfi_device_data, type);
		if (rc) {
			dprintk(VIDC_ERR, "%s: trigger_ssr failed\n",
				__func__);
			core->trigger_ssr = false;
		}
	} else {
		dprintk(VIDC_WARN, "%s: video core %pK not initialized\n",
			__func__, core);
	}
	mutex_unlock(&core->lock);

	return rc;
}

static int msm_vidc_load_supported(struct msm_vidc_inst *inst)
{
	int num_mbs_per_sec = 0, max_load_adj = 0;
	enum load_calc_quirks quirks = LOAD_CALC_IGNORE_TURBO_LOAD |
		LOAD_CALC_IGNORE_THUMBNAIL_LOAD |
		LOAD_CALC_IGNORE_NON_REALTIME_LOAD;

	if (inst->state == MSM_VIDC_OPEN_DONE) {
		max_load_adj = inst->core->resources.max_load;
		num_mbs_per_sec = msm_comm_get_load(inst->core,
					MSM_VIDC_DECODER, quirks);
		num_mbs_per_sec += msm_comm_get_load(inst->core,
					MSM_VIDC_ENCODER, quirks);
		if (num_mbs_per_sec > max_load_adj) {
			dprintk(VIDC_ERR,
				"H/W is overloaded. needed: %d max: %d\n",
				num_mbs_per_sec,
				max_load_adj);
			msm_vidc_print_running_insts(inst->core);
			return -EBUSY;
		}
	}
	return 0;
}

int msm_vidc_check_scaling_supported(struct msm_vidc_inst *inst)
{
	u32 x_min, x_max, y_min, y_max;
	u32 input_height, input_width, output_height, output_width;
	u32 rotation;

	input_height = inst->prop.height[OUTPUT_PORT];
	input_width = inst->prop.width[OUTPUT_PORT];
	output_height = inst->prop.height[CAPTURE_PORT];
	output_width = inst->prop.width[CAPTURE_PORT];

	if (!input_height || !input_width || !output_height || !output_width) {
		dprintk(VIDC_ERR,
			"Invalid : Input height = %d width = %d",
			input_height, input_width);
		dprintk(VIDC_ERR,
			" output height = %d width = %d\n",
			output_height, output_width);
		return -ENOTSUPP;
	}

	if (!inst->capability.scale_x.min ||
		!inst->capability.scale_x.max ||
		!inst->capability.scale_y.min ||
		!inst->capability.scale_y.max) {

		if (input_width * input_height !=
			output_width * output_height) {
			dprintk(VIDC_ERR,
				"%s: scaling is not supported (%dx%d != %dx%d)\n",
				__func__, input_width, input_height,
				output_width, output_height);
			return -ENOTSUPP;
		}

		dprintk(VIDC_DBG, "%s: supported WxH = %dx%d\n",
			__func__, input_width, input_height);
		return 0;
	}

	rotation =  msm_comm_g_ctrl_for_id(inst,
					V4L2_CID_MPEG_VIDC_VIDEO_ROTATION);

	if ((output_width != output_height) &&
		(rotation == V4L2_CID_MPEG_VIDC_VIDEO_ROTATION_90 ||
		rotation == V4L2_CID_MPEG_VIDC_VIDEO_ROTATION_270)) {

		output_width = inst->prop.height[CAPTURE_PORT];
		output_height = inst->prop.width[CAPTURE_PORT];
		dprintk(VIDC_DBG,
			"Rotation=%u Swapped Output W=%u H=%u to check scaling",
			rotation, output_width, output_height);
	}

	x_min = (1<<16)/inst->capability.scale_x.min;
	y_min = (1<<16)/inst->capability.scale_y.min;
	x_max = inst->capability.scale_x.max >> 16;
	y_max = inst->capability.scale_y.max >> 16;

	if (input_height > output_height) {
		if (input_height > x_min * output_height) {
			dprintk(VIDC_ERR,
				"Unsupported height min height %d vs %d\n",
				input_height / x_min, output_height);
			return -ENOTSUPP;
		}
	} else {
		if (output_height > x_max * input_height) {
			dprintk(VIDC_ERR,
				"Unsupported height max height %d vs %d\n",
				x_max * input_height, output_height);
			return -ENOTSUPP;
		}
	}
	if (input_width > output_width) {
		if (input_width > y_min * output_width) {
			dprintk(VIDC_ERR,
				"Unsupported width min width %d vs %d\n",
				input_width / y_min, output_width);
			return -ENOTSUPP;
		}
	} else {
		if (output_width > y_max * input_width) {
			dprintk(VIDC_ERR,
				"Unsupported width max width %d vs %d\n",
				y_max * input_width, output_width);
			return -ENOTSUPP;
		}
	}
	return 0;
}

int msm_vidc_check_session_supported(struct msm_vidc_inst *inst)
{
	struct msm_vidc_capability *capability;
	int rc = 0;
	struct hfi_device *hdev;
	struct msm_vidc_core *core;
	u32 output_height, output_width, input_height, input_width;
	u32 rotation;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_WARN, "%s: Invalid parameter\n", __func__);
		return -EINVAL;
	}
	capability = &inst->capability;
	hdev = inst->core->device;
	core = inst->core;
	rc = msm_vidc_load_supported(inst);
	if (rc) {
		dprintk(VIDC_WARN,
			"%s: Hardware is overloaded\n", __func__);
		return rc;
	}

	if (!is_thermal_permissible(core)) {
		dprintk(VIDC_WARN,
			"Thermal level critical, stop all active sessions!\n");
		return -ENOTSUPP;
	}

	output_height = inst->prop.height[CAPTURE_PORT];
	output_width = inst->prop.width[CAPTURE_PORT];
	input_height = inst->prop.height[OUTPUT_PORT];
	input_width = inst->prop.width[OUTPUT_PORT];

	if (inst->session_type == MSM_VIDC_ENCODER && (input_width % 2 != 0 ||
			input_height % 2 != 0 || output_width % 2 != 0 ||
			output_height % 2 != 0)) {
		dprintk(VIDC_ERR,
			"Height and Width should be even numbers for NV12\n");
		dprintk(VIDC_ERR,
			"Input WxH = (%u)x(%u), Output WxH = (%u)x(%u)\n",
			input_width, input_height,
			output_width, output_height);
		rc = -ENOTSUPP;
	}

	rotation =  msm_comm_g_ctrl_for_id(inst,
					V4L2_CID_MPEG_VIDC_VIDEO_ROTATION);

	output_height = ALIGN(inst->prop.height[CAPTURE_PORT], 16);
	output_width = ALIGN(inst->prop.width[CAPTURE_PORT], 16);

	if ((output_width != output_height) &&
		(rotation == V4L2_CID_MPEG_VIDC_VIDEO_ROTATION_90 ||
		rotation == V4L2_CID_MPEG_VIDC_VIDEO_ROTATION_270)) {

		output_width = ALIGN(inst->prop.height[CAPTURE_PORT], 16);
		output_height = ALIGN(inst->prop.width[CAPTURE_PORT], 16);
		dprintk(VIDC_DBG,
			"Rotation=%u Swapped Output W=%u H=%u to check capability",
			rotation, output_width, output_height);
	}

	if (!rc) {
		if (output_width < capability->width.min ||
			output_height < capability->height.min) {
			dprintk(VIDC_ERR,
				"Unsupported WxH = (%u)x(%u), min supported is - (%u)x(%u)\n",
				output_width,
				output_height,
				capability->width.min,
				capability->height.min);
			rc = -ENOTSUPP;
		}
		if (!rc && output_width > capability->width.max) {
			dprintk(VIDC_ERR,
				"Unsupported width = %u supported max width = %u\n",
				output_width,
				capability->width.max);
				rc = -ENOTSUPP;
		}

		if (!rc && output_height * output_width >
			capability->width.max * capability->height.max) {
			dprintk(VIDC_ERR,
			"Unsupported WxH = (%u)x(%u), max supported is - (%u)x(%u)\n",
			output_width, output_height,
			capability->width.max, capability->height.max);
			rc = -ENOTSUPP;
		}
	}
	if (rc) {
		dprintk(VIDC_ERR,
			"%s: Resolution unsupported\n", __func__);
	}
	return rc;
}

void msm_comm_generate_session_error(struct msm_vidc_inst *inst)
{
	enum hal_command_response cmd = HAL_SESSION_ERROR;
	struct msm_vidc_cb_cmd_done response = {0};

	if (!inst || !inst->core) {
		dprintk(VIDC_ERR, "%s: invalid input parameters\n", __func__);
		return;
	}
	dprintk(VIDC_WARN, "%s: inst %pK\n", __func__, inst);
	response.session_id = inst;
	response.status = VIDC_ERR_FAIL;
	handle_session_error(cmd, (void *)&response);
}

void msm_comm_generate_sys_error(struct msm_vidc_inst *inst)
{
	struct msm_vidc_core *core;
	enum hal_command_response cmd = HAL_SYS_ERROR;
	struct msm_vidc_cb_cmd_done response  = {0};

	if (!inst || !inst->core) {
		dprintk(VIDC_ERR, "%s: invalid input parameters\n", __func__);
		return;
	}
	dprintk(VIDC_WARN, "%s: inst %pK\n", __func__, inst);
	core = inst->core;
	response.device_id = (u32) core->id;
	handle_sys_error(cmd, (void *) &response);

}

int msm_comm_kill_session(struct msm_vidc_inst *inst)
{
	int rc = 0;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s: invalid input parameters\n", __func__);
		return -EINVAL;
	} else if (!inst->session) {
		dprintk(VIDC_ERR, "%s: no session to kill for inst %pK\n",
			__func__, inst);
		return 0;
	}

	dprintk(VIDC_WARN, "%s: inst %pK, session %x state %d\n", __func__,
			inst, hash32_ptr(inst->session), inst->state);
	/*
	 * We're internally forcibly killing the session, if fw is aware of
	 * the session send session_abort to firmware to clean up and release
	 * the session, else just kill the session inside the driver.
	 */
	if ((inst->state >= MSM_VIDC_OPEN_DONE &&
			inst->state < MSM_VIDC_CLOSE_DONE) ||
			inst->state == MSM_VIDC_CORE_INVALID) {
		rc = msm_comm_session_abort(inst);
		if (rc) {
			dprintk(VIDC_ERR,
				"%s: inst %pK session %x abort failed\n",
				__func__, inst, hash32_ptr(inst->session));
			change_inst_state(inst, MSM_VIDC_CORE_INVALID);
		}
	}

	change_inst_state(inst, MSM_VIDC_CLOSE_DONE);
	msm_comm_session_clean(inst);

	dprintk(VIDC_WARN, "%s: inst %pK session %x handled\n", __func__,
		inst, hash32_ptr(inst->session));
	return rc;
}

int msm_comm_smem_alloc(struct msm_vidc_inst *inst,
		size_t size, u32 align, u32 flags, enum hal_buffer buffer_type,
		int map_kernel, struct msm_smem *smem)
{
	int rc = 0;

	if (!inst || !inst->core) {
		dprintk(VIDC_ERR, "%s: invalid inst: %pK\n", __func__, inst);
		return -EINVAL;
	}
	rc = msm_smem_alloc(inst->mem_client, size, align,
			flags, buffer_type, map_kernel, smem);
	return rc;
}

void msm_comm_smem_free(struct msm_vidc_inst *inst, struct msm_smem *mem)
{
	if (!inst || !inst->core || !mem) {
		dprintk(VIDC_ERR,
			"%s: invalid params: %pK %pK\n", __func__, inst, mem);
		return;
	}
	msm_smem_free(inst->mem_client, mem);
}

int msm_comm_smem_cache_operations(struct msm_vidc_inst *inst,
		struct msm_smem *mem, enum smem_cache_ops cache_ops)
{
	if (!inst || !mem) {
		dprintk(VIDC_ERR,
			"%s: invalid params: %pK %pK\n", __func__, inst, mem);
		return -EINVAL;
	}
	return msm_smem_cache_operations(inst->mem_client, mem->handle,
			mem->offset, mem->size, cache_ops);
}

int msm_comm_qbuf_cache_operations(struct msm_vidc_inst *inst,
		struct v4l2_buffer *b)
{
	int rc = 0, i;
	void *dma_buf;
	void *handle;
	bool skip;

	if (!inst || !b) {
		dprintk(VIDC_ERR, "%s: invalid params %pK %pK\n",
			__func__, inst, b);
		return -EINVAL;
	}

	for (i = 0; i < b->length; i++) {
		unsigned long offset, size;
		enum smem_cache_ops cache_ops;

		dma_buf = msm_smem_get_dma_buf(b->m.planes[i].m.fd);
		handle = msm_smem_get_handle(inst->mem_client, dma_buf);

		offset = b->m.planes[i].data_offset;
		size = b->m.planes[i].length - offset;
		cache_ops = SMEM_CACHE_INVALIDATE;
		skip = false;

		if (inst->session_type == MSM_VIDC_DECODER) {
			if (b->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
				if (!i) { /* bitstream */
					size = b->m.planes[i].bytesused;
					cache_ops = SMEM_CACHE_CLEAN_INVALIDATE;
				}
			} else if (b->type ==
					V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
				if (!i) { /* yuv */
					/* all values are correct */
				}
			}
		} else if (inst->session_type == MSM_VIDC_ENCODER) {
			if (b->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
				if (!i) { /* yuv */
					size = b->m.planes[i].bytesused;
					cache_ops = SMEM_CACHE_CLEAN_INVALIDATE;
				} else { /* extradata */
					cache_ops = SMEM_CACHE_CLEAN_INVALIDATE;
				}
			} else if (b->type ==
					V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
				if (!i) { /* bitstream */
					/* all values are correct */
				}
			}
		}

		if (!skip) {
			rc = msm_smem_cache_operations(inst->mem_client, handle,
					offset, size, cache_ops);
			if (rc)
				print_v4l2_buffer(VIDC_ERR,
					"qbuf cache ops failed", inst, b);
		}

		msm_smem_put_handle(inst->mem_client, handle);
		msm_smem_put_dma_buf(dma_buf);
	}

	return rc;
}

int msm_comm_dqbuf_cache_operations(struct msm_vidc_inst *inst,
		struct v4l2_buffer *b)
{
	int rc = 0, i;
	void *dma_buf;
	void *handle;
	bool skip;

	if (!inst || !b) {
		dprintk(VIDC_ERR, "%s: invalid params %pK %pK\n",
			__func__, inst, b);
		return -EINVAL;
	}

	for (i = 0; i < b->length; i++) {
		unsigned long offset, size;
		enum smem_cache_ops cache_ops;

		dma_buf = msm_smem_get_dma_buf(b->m.planes[i].m.fd);
		handle = msm_smem_get_handle(inst->mem_client, dma_buf);

		offset = b->m.planes[i].data_offset;
		size = b->m.planes[i].length - offset;
		cache_ops = SMEM_CACHE_INVALIDATE;
		skip = false;

		if (inst->session_type == MSM_VIDC_DECODER) {
			if (b->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
				if (!i) /* bitstream */
					skip = true;
			} else if (b->type ==
					V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
				if (!i) { /* yuv */
					/* all values are correct */
				}
			}
		} else if (inst->session_type == MSM_VIDC_ENCODER) {
			if (b->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
				/* yuv and extradata */
				skip = true;
			} else if (b->type ==
					V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
				if (!i) { /* bitstream */
					/*
					 * Include vp8e header bytes as well
					 * by making offset equal to zero
					 */
					offset = 0;
					size = b->m.planes[i].bytesused +
						b->m.planes[i].data_offset;
				}
			}
		}

		if (!skip) {
			rc = msm_smem_cache_operations(inst->mem_client, handle,
					offset, size, cache_ops);
			if (rc)
				print_v4l2_buffer(VIDC_ERR,
					"dqbuf cache ops failed", inst, b);
		}

		msm_smem_put_handle(inst->mem_client, handle);
		msm_smem_put_dma_buf(dma_buf);
	}

	return rc;
}

void msm_vidc_fw_unload_handler(struct work_struct *work)
{
	struct msm_vidc_core *core = NULL;
	struct hfi_device *hdev = NULL;
	int rc = 0;

	core = container_of(work, struct msm_vidc_core, fw_unload_work.work);
	if (!core || !core->device) {
		dprintk(VIDC_ERR, "%s - invalid work or core handle\n",
				__func__);
		return;
	}

	hdev = core->device;

	mutex_lock(&core->lock);
	if (list_empty(&core->instances) &&
		core->state != VIDC_CORE_UNINIT) {
		if (core->state > VIDC_CORE_INIT) {
			dprintk(VIDC_DBG, "Calling vidc_hal_core_release\n");
			rc = call_hfi_op(hdev, core_release,
					hdev->hfi_device_data);
			if (rc) {
				dprintk(VIDC_ERR,
					"Failed to release core, id = %d\n",
					core->id);
				mutex_unlock(&core->lock);
				return;
			}
		}
		core->state = VIDC_CORE_UNINIT;
		kfree(core->capabilities);
		core->capabilities = NULL;
	}
	mutex_unlock(&core->lock);
}

int msm_comm_set_color_format(struct msm_vidc_inst *inst,
		enum hal_buffer buffer_type, int fourcc)
{
	struct hal_uncompressed_format_select hal_fmt = {0};
	enum hal_uncompressed_format format = HAL_UNUSED_COLOR;
	int rc = 0;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device) {
		dprintk(VIDC_ERR, "%s - invalid param\n", __func__);
		return -EINVAL;
	}

	hdev = inst->core->device;

	format = msm_comm_get_hal_uncompressed(fourcc);
	if (format == HAL_UNUSED_COLOR) {
		dprintk(VIDC_ERR, "Using unsupported colorformat %#x\n",
				fourcc);
		rc = -ENOTSUPP;
		goto exit;
	}

	hal_fmt.buffer_type = buffer_type;
	hal_fmt.format = format;

	rc = call_hfi_op(hdev, session_set_property, inst->session,
		HAL_PARAM_UNCOMPRESSED_FORMAT_SELECT, &hal_fmt);
	if (rc)
		dprintk(VIDC_ERR,
			"Failed to set input color format\n");
	else
		dprintk(VIDC_DBG, "Setting uncompressed colorformat to %#x\n",
				format);

exit:
	return rc;
}

int msm_vidc_comm_s_parm(struct msm_vidc_inst *inst, struct v4l2_streamparm *a)
{
	u32 property_id = 0;
	u64 us_per_frame = 0;
	void *pdata;
	int rc = 0, fps = 0;
	struct hal_frame_rate frame_rate;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device || !a) {
		dprintk(VIDC_ERR, "%s invalid parameters\n", __func__);
		return -EINVAL;
	}

	hdev = inst->core->device;
	property_id = HAL_CONFIG_FRAME_RATE;

	if (a->parm.output.timeperframe.denominator) {
		switch (a->type) {
		case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
		case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
			us_per_frame = a->parm.output.timeperframe.numerator *
				(u64)USEC_PER_SEC;
			do_div(us_per_frame, a->parm.output.
				timeperframe.denominator);
			break;
		default:
			dprintk(VIDC_ERR,
					"Scale clocks : Unknown buffer type %d\n",
					a->type);
			break;
		}
	}

	if (!us_per_frame) {
		dprintk(VIDC_ERR,
				"Failed to scale clocks : time between frames is 0\n");
		rc = -EINVAL;
		goto exit;
	}

	fps = us_per_frame > USEC_PER_SEC ?
		0 : USEC_PER_SEC / (u32)us_per_frame;

	if (fps % 15 == 14 || fps % 24 == 23)
		fps = fps + 1;
	else if ((fps > 1) && (fps % 24 == 1 || fps % 15 == 1))
		fps = fps - 1;

	if (fps < inst->capability.frame_rate.min ||
			fps > inst->capability.frame_rate.max) {
		dprintk(VIDC_ERR,
			"FPS is out of limits : fps = %d Min = %d, Max = %d\n",
			fps, inst->capability.frame_rate.min,
			inst->capability.frame_rate.max);
		rc = -EINVAL;
		goto exit;
	}

	dprintk(VIDC_PROF, "reported fps changed for %pK: %d->%d\n",
			inst, inst->prop.fps, fps);
	inst->prop.fps = fps;
	if (inst->session_type == MSM_VIDC_ENCODER &&
		get_hal_codec(inst->fmts[CAPTURE_PORT].fourcc) !=
			HAL_VIDEO_CODEC_TME) {
		frame_rate.frame_rate = inst->prop.fps * BIT(16);
		frame_rate.buffer_type = HAL_BUFFER_OUTPUT;
		pdata = &frame_rate;
		rc = call_hfi_op(hdev, session_set_property,
			inst->session, property_id, pdata);
		if (rc)
			dprintk(VIDC_WARN,
				"Failed to set frame rate %d\n", rc);
	}
exit:
	return rc;
}

void msm_comm_print_inst_info(struct msm_vidc_inst *inst)
{
	struct msm_vidc_buffer *mbuf;
	struct internal_buf *buf;
	bool is_decode = false;
	enum vidc_ports port;
	bool is_secure = false;

	if (!inst) {
		dprintk(VIDC_ERR, "%s - invalid param %pK\n",
			__func__, inst);
		return;
	}

	is_decode = inst->session_type == MSM_VIDC_DECODER;
	port = is_decode ? OUTPUT_PORT : CAPTURE_PORT;
	is_secure = inst->flags & VIDC_SECURE;
	dprintk(VIDC_ERR,
			"%s session, %s, Codec type: %s HxW: %d x %d fps: %d bitrate: %d bit-depth: %s\n",
			is_decode ? "Decode" : "Encode",
			is_secure ? "Secure" : "Non-Secure",
			inst->fmts[port].name,
			inst->prop.height[port], inst->prop.width[port],
			inst->prop.fps, inst->prop.bitrate,
			!inst->bit_depth ? "8" : "10");

	dprintk(VIDC_ERR,
			"---Buffer details for inst: %pK of type: %d---\n",
			inst, inst->session_type);
	mutex_lock(&inst->registeredbufs.lock);
	dprintk(VIDC_ERR, "registered buffer list:\n");
	list_for_each_entry(mbuf, &inst->registeredbufs.list, list)
		print_vidc_buffer(VIDC_ERR, "buf", inst, mbuf);
	mutex_unlock(&inst->registeredbufs.lock);

	mutex_lock(&inst->scratchbufs.lock);
	dprintk(VIDC_ERR, "scratch buffer list:\n");
	list_for_each_entry(buf, &inst->scratchbufs.list, list)
		dprintk(VIDC_ERR, "type: %d addr: %x size: %u\n",
				buf->buffer_type, buf->smem.device_addr,
				buf->smem.size);
	mutex_unlock(&inst->scratchbufs.lock);

	mutex_lock(&inst->persistbufs.lock);
	dprintk(VIDC_ERR, "persist buffer list:\n");
	list_for_each_entry(buf, &inst->persistbufs.list, list)
		dprintk(VIDC_ERR, "type: %d addr: %x size: %u\n",
				buf->buffer_type, buf->smem.device_addr,
				buf->smem.size);
	mutex_unlock(&inst->persistbufs.lock);

	mutex_lock(&inst->outputbufs.lock);
	dprintk(VIDC_ERR, "dpb buffer list:\n");
	list_for_each_entry(buf, &inst->outputbufs.list, list)
		dprintk(VIDC_ERR, "type: %d addr: %x size: %u\n",
				buf->buffer_type, buf->smem.device_addr,
				buf->smem.size);
	mutex_unlock(&inst->outputbufs.lock);
}

int msm_comm_session_continue(void *instance)
{
	struct msm_vidc_inst *inst = instance;
	int rc = 0;
	struct hfi_device *hdev;

	if (!inst || !inst->core || !inst->core->device)
		return -EINVAL;
	hdev = inst->core->device;
	mutex_lock(&inst->lock);
	if (inst->state >= MSM_VIDC_RELEASE_RESOURCES_DONE ||
			inst->state < MSM_VIDC_START_DONE) {
		dprintk(VIDC_DBG,
			"Inst %pK : Not in valid state to call %s\n",
				inst, __func__);
		goto sess_continue_fail;
	}
	if (inst->session_type == MSM_VIDC_DECODER && inst->in_reconfig) {
		dprintk(VIDC_DBG, "send session_continue\n");
		rc = call_hfi_op(hdev, session_continue,
						 (void *)inst->session);
		if (rc) {
			dprintk(VIDC_ERR,
					"failed to send session_continue\n");
			rc = -EINVAL;
			goto sess_continue_fail;
		}
		inst->in_reconfig = false;
		inst->prop.height[CAPTURE_PORT] = inst->reconfig_height;
		inst->prop.width[CAPTURE_PORT] = inst->reconfig_width;
		inst->prop.height[OUTPUT_PORT] = inst->reconfig_height;
		inst->prop.width[OUTPUT_PORT] = inst->reconfig_width;
		if (msm_comm_get_stream_output_mode(inst) ==
			HAL_VIDEO_DECODER_SECONDARY) {
			rc = msm_comm_queue_output_buffers(inst);
			if (rc) {
				dprintk(VIDC_ERR,
						"Failed to queue output buffers: %d\n",
						rc);
				goto sess_continue_fail;
			}
		}
	} else if (inst->session_type == MSM_VIDC_ENCODER) {
		dprintk(VIDC_DBG,
				"session_continue not supported for encoder");
	} else {
		dprintk(VIDC_ERR,
				"session_continue called in wrong state for decoder");
	}

sess_continue_fail:
	mutex_unlock(&inst->lock);
	return rc;
}

u32 get_frame_size_nv12(int plane, u32 height, u32 width)
{
	return VENUS_BUFFER_SIZE(COLOR_FMT_NV12, width, height);
}

u32 get_frame_size_nv12_ubwc(int plane, u32 height, u32 width)
{
	return VENUS_BUFFER_SIZE(COLOR_FMT_NV12_UBWC, width, height);
}

u32 get_frame_size_rgba(int plane, u32 height, u32 width)
{
	return VENUS_BUFFER_SIZE(COLOR_FMT_RGBA8888, width, height);
}

u32 get_frame_size_nv21(int plane, u32 height, u32 width)
{
	return VENUS_BUFFER_SIZE(COLOR_FMT_NV21, width, height);
}

u32 get_frame_size_tp10_ubwc(int plane, u32 height, u32 width)
{
	return VENUS_BUFFER_SIZE(COLOR_FMT_NV12_BPP10_UBWC, width, height);
}

u32 get_frame_size_p010(int plane, u32 height, u32 width)
{
	return VENUS_BUFFER_SIZE(COLOR_FMT_P010, width, height);
}


void print_vidc_buffer(u32 tag, const char *str, struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf)
{
	struct vb2_buffer *vb2 = NULL;

	if (!(tag & msm_vidc_debug) || !inst || !mbuf)
		return;

	vb2 = &mbuf->vvb.vb2_buf;

	if (vb2->num_planes == 1)
		dprintk(tag,
			"%s: %s: %x : idx %2d fd %d off %d daddr %x size %d filled %d flags 0x%x ts %lld refcnt %d mflags 0x%x\n",
			str, vb2->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ?
			"OUTPUT" : "CAPTURE", hash32_ptr(inst->session),
			vb2->index, vb2->planes[0].m.fd,
			vb2->planes[0].data_offset, mbuf->smem[0].device_addr,
			vb2->planes[0].length, vb2->planes[0].bytesused,
			mbuf->vvb.flags, mbuf->vvb.vb2_buf.timestamp,
			mbuf->smem[0].refcount, mbuf->flags);
	else
		dprintk(tag,
			"%s: %s: %x : idx %2d fd %d off %d daddr %x size %d filled %d flags 0x%x ts %lld refcnt %d mflags 0x%x, extradata: fd %d off %d daddr %x size %d filled %d refcnt %d\n",
			str, vb2->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ?
			"OUTPUT" : "CAPTURE", hash32_ptr(inst->session),
			vb2->index, vb2->planes[0].m.fd,
			vb2->planes[0].data_offset, mbuf->smem[0].device_addr,
			vb2->planes[0].length, vb2->planes[0].bytesused,
			mbuf->vvb.flags, mbuf->vvb.vb2_buf.timestamp,
			mbuf->smem[0].refcount, mbuf->flags,
			vb2->planes[1].m.fd, vb2->planes[1].data_offset,
			mbuf->smem[1].device_addr, vb2->planes[1].length,
			vb2->planes[1].bytesused, mbuf->smem[1].refcount);
}

void print_vb2_buffer(u32 tag, const char *str, struct msm_vidc_inst *inst,
		struct vb2_buffer *vb2)
{
	if (!(tag & msm_vidc_debug) || !inst || !vb2)
		return;

	if (vb2->num_planes == 1)
		dprintk(tag,
			"%s: %s: %x : idx %2d fd %d off %d size %d filled %d\n",
			str, vb2->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ?
			"OUTPUT" : "CAPTURE", hash32_ptr(inst->session),
			vb2->index, vb2->planes[0].m.fd,
			vb2->planes[0].data_offset, vb2->planes[0].length,
			vb2->planes[0].bytesused);
	else
		dprintk(tag,
			"%s: %s: %x : idx %2d fd %d off %d size %d filled %d, extradata: fd %d off %d size %d filled %d\n",
			str, vb2->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ?
			"OUTPUT" : "CAPTURE", hash32_ptr(inst->session),
			vb2->index, vb2->planes[0].m.fd,
			vb2->planes[0].data_offset, vb2->planes[0].length,
			vb2->planes[0].bytesused, vb2->planes[1].m.fd,
			vb2->planes[1].data_offset, vb2->planes[1].length,
			vb2->planes[1].bytesused);
}

void print_v4l2_buffer(u32 tag, const char *str, struct msm_vidc_inst *inst,
		struct v4l2_buffer *v4l2)
{
	if (!(tag & msm_vidc_debug) || !inst || !v4l2)
		return;

	if (v4l2->length == 1)
		dprintk(tag,
			"%s: %s: %x : idx %2d fd %d off %d size %d filled %d\n",
			str, v4l2->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ?
			"OUTPUT" : "CAPTURE", hash32_ptr(inst->session),
			v4l2->index, v4l2->m.planes[0].m.fd,
			v4l2->m.planes[0].data_offset,
			v4l2->m.planes[0].length,
			v4l2->m.planes[0].bytesused);
	else
		dprintk(tag,
			"%s: %s: %x : idx %2d fd %d off %d size %d filled %d, extradata: fd %d off %d size %d filled %d\n",
			str, v4l2->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ?
			"OUTPUT" : "CAPTURE", hash32_ptr(inst->session),
			v4l2->index, v4l2->m.planes[0].m.fd,
			v4l2->m.planes[0].data_offset,
			v4l2->m.planes[0].length,
			v4l2->m.planes[0].bytesused,
			v4l2->m.planes[1].m.fd,
			v4l2->m.planes[1].data_offset,
			v4l2->m.planes[1].length,
			v4l2->m.planes[1].bytesused);
}

bool msm_comm_compare_vb2_plane(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf, struct vb2_buffer *vb2, u32 i)
{
	struct vb2_buffer *vb;

	if (!inst || !mbuf || !vb2) {
		dprintk(VIDC_ERR, "%s: invalid params, %pK %pK %pK\n",
			__func__, inst, mbuf, vb2);
		return false;
	}

	vb = &mbuf->vvb.vb2_buf;
	if (vb->planes[i].m.fd == vb2->planes[i].m.fd &&
		vb->planes[i].data_offset == vb2->planes[i].data_offset &&
		vb->planes[i].length == vb2->planes[i].length) {
		return true;
	}

	return false;
}

bool msm_comm_compare_vb2_planes(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf, struct vb2_buffer *vb2)
{
	int i = 0;
	struct vb2_buffer *vb;

	if (!inst || !mbuf || !vb2) {
		dprintk(VIDC_ERR, "%s: invalid params, %pK %pK %pK\n",
			__func__, inst, mbuf, vb2);
		return false;
	}

	vb = &mbuf->vvb.vb2_buf;

	if (vb->num_planes != vb2->num_planes)
		return false;

	for (i = 0; i < vb->num_planes; i++) {
		if (!msm_comm_compare_vb2_plane(inst, mbuf, vb2, i))
			return false;
	}

	return true;
}

bool msm_comm_compare_dma_plane(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf, unsigned long *dma_planes, u32 i)
{
	if (!inst || !mbuf || !dma_planes) {
		dprintk(VIDC_ERR, "%s: invalid params, %pK %pK %pK\n",
			__func__, inst, mbuf, dma_planes);
		return false;
	}

	if ((unsigned long)mbuf->smem[i].dma_buf == dma_planes[i])
		return true;

	return false;
}

bool msm_comm_compare_dma_planes(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf, unsigned long *dma_planes)
{
	int i = 0;
	struct vb2_buffer *vb;

	if (!inst || !mbuf || !dma_planes) {
		dprintk(VIDC_ERR, "%s: invalid params, %pK %pK %pK\n",
			__func__, inst, mbuf, dma_planes);
		return false;
	}

	vb = &mbuf->vvb.vb2_buf;
	for (i = 0; i < vb->num_planes; i++) {
		if (!msm_comm_compare_dma_plane(inst, mbuf, dma_planes, i))
			return false;
	}

	return true;
}


bool msm_comm_compare_device_plane(struct msm_vidc_buffer *mbuf,
		u32 *planes, u32 i)
{
	if (!mbuf || !planes) {
		dprintk(VIDC_ERR, "%s: invalid params, %pK %pK\n",
			__func__, mbuf, planes);
		return false;
	}

	if (mbuf->smem[i].device_addr == planes[i])
		return true;

	return false;
}

bool msm_comm_compare_device_planes(struct msm_vidc_buffer *mbuf,
		u32 *planes)
{
	int i = 0;

	if (!mbuf || !planes)
		return false;

	for (i = 0; i < mbuf->vvb.vb2_buf.num_planes; i++) {
		if (!msm_comm_compare_device_plane(mbuf, planes, i))
			return false;
	}

	return true;
}

struct msm_vidc_buffer *msm_comm_get_buffer_using_device_planes(
		struct msm_vidc_inst *inst, u32 *planes)
{
	struct msm_vidc_buffer *mbuf;
	bool found = false;

	mutex_lock(&inst->registeredbufs.lock);
	found = false;
	list_for_each_entry(mbuf, &inst->registeredbufs.list, list) {
		if (msm_comm_compare_device_planes(mbuf, planes)) {
			found = true;
			break;
		}
	}
	mutex_unlock(&inst->registeredbufs.lock);
	if (!found) {
		dprintk(VIDC_ERR,
			"%s: data_addr %x, extradata_addr %x not found\n",
			__func__, planes[0], planes[1]);
		mbuf = NULL;
	}

	return mbuf;
}

int msm_comm_flush_vidc_buffer(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf)
{
	int rc;
	struct vb2_buffer *vb;

	if (!inst || !mbuf) {
		dprintk(VIDC_ERR, "%s: invalid params %pK %pK\n",
			__func__, inst, mbuf);
		return -EINVAL;
	}

	vb = msm_comm_get_vb_using_vidc_buffer(inst, mbuf);
	if (!vb) {
		print_vidc_buffer(VIDC_ERR,
			"vb not found for buf", inst, mbuf);
		return -EINVAL;
	}

	vb->planes[0].bytesused = 0;
	rc = msm_comm_vb2_buffer_done(inst, vb);
	if (rc)
		print_vidc_buffer(VIDC_ERR,
			"vb2_buffer_done failed for", inst, mbuf);

	return rc;
}

struct msm_vidc_buffer *msm_comm_get_vidc_buffer(struct msm_vidc_inst *inst,
		struct vb2_buffer *vb2)
{
	int rc = 0;
	struct vb2_v4l2_buffer *vbuf;
	struct vb2_buffer *vb;
	unsigned long dma_planes[VB2_MAX_PLANES] = {0};
	struct msm_vidc_buffer *mbuf;
	bool found = false;
	int i;

	if (!inst || !vb2) {
		dprintk(VIDC_ERR, "%s: invalid params\n", __func__);
		return NULL;
	}

	for (i = 0; i < vb2->num_planes; i++) {
		/*
		 * always compare dma_buf addresses which is guaranteed
		 * to be same across the processes (duplicate fds).
		 */
		dma_planes[i] = (unsigned long)msm_smem_get_dma_buf(
				vb2->planes[i].m.fd);
		if (!dma_planes[i])
			return NULL;
		msm_smem_put_dma_buf((struct dma_buf *)dma_planes[i]);
	}

	mutex_lock(&inst->registeredbufs.lock);
	if (inst->session_type == MSM_VIDC_DECODER) {
		list_for_each_entry(mbuf, &inst->registeredbufs.list, list) {
			if (msm_comm_compare_dma_planes(inst, mbuf,
					dma_planes)) {
				found = true;
				break;
			}
		}
	} else {
		/*
		 * for encoder, client may queue the same buffer with different
		 * fd before driver returned old buffer to the client. This
		 * buffer should be treated as new buffer. Search the list with
		 * fd so that it will be treated as new msm_vidc_buffer.
		 */
		list_for_each_entry(mbuf, &inst->registeredbufs.list, list) {
			if (msm_comm_compare_vb2_planes(inst, mbuf, vb2)) {
				found = true;
				break;
			}
		}
	}

	if (!found) {
		/* this is new vb2_buffer */
		mbuf = kzalloc(sizeof(struct msm_vidc_buffer), GFP_KERNEL);
		if (!mbuf) {
			dprintk(VIDC_ERR, "%s: alloc msm_vidc_buffer failed\n",
				__func__);
			rc = -ENOMEM;
			goto exit;
		}
		kref_init(&mbuf->kref);
	}

	/* Initially assume all the buffer are going to be deferred */
	mbuf->flags |= MSM_VIDC_FLAG_DEFERRED;

	vbuf = to_vb2_v4l2_buffer(vb2);
	memcpy(&mbuf->vvb, vbuf, sizeof(struct vb2_v4l2_buffer));
	vb = &mbuf->vvb.vb2_buf;

	for (i = 0; i < vb->num_planes; i++) {
		mbuf->smem[i].buffer_type = get_hal_buffer_type(vb->type, i);
		mbuf->smem[i].fd = vb->planes[i].m.fd;
		mbuf->smem[i].offset = vb->planes[i].data_offset;
		mbuf->smem[i].size = vb->planes[i].length;
		rc = msm_smem_map_dma_buf(inst, &mbuf->smem[i]);
		if (rc) {
			dprintk(VIDC_ERR, "%s: map failed.\n", __func__);
			goto exit;
		}
		/* increase refcount as we get both fbd and rbr */
		rc = msm_smem_map_dma_buf(inst, &mbuf->smem[i]);
		if (rc) {
			dprintk(VIDC_ERR, "%s: map failed..\n", __func__);
			goto exit;
		}
	}

	/* special handling for decoder */
	if (inst->session_type == MSM_VIDC_DECODER) {
		if (found) {
			rc = -EEXIST;
		} else {
			bool found_plane0 = false;
			struct msm_vidc_buffer *temp;
			/*
			 * client might have queued same plane[0] but different
			 * plane[1] search plane[0] and if found don't queue the
			 * buffer, the buffer will be queued when rbr event
			 * arrived.
			 */
			list_for_each_entry(temp, &inst->registeredbufs.list,
						list) {
				if (msm_comm_compare_dma_plane(inst, temp,
						dma_planes, 0)) {
					found_plane0 = true;
					break;
				}
			}
			if (found_plane0)
				rc = -EEXIST;
		}
		/*
		 * If RBR pending on this buffer then enable RBR_PENDING flag
		 * and clear the DEFERRED flag to avoid this buffer getting
		 * queued to video hardware in msm_comm_qbuf() which tries to
		 * queue all the DEFERRED buffers.
		 */
		if (rc == -EEXIST) {
			mbuf->flags |= MSM_VIDC_FLAG_RBR_PENDING;
			mbuf->flags &= ~MSM_VIDC_FLAG_DEFERRED;
		}
	}

	/* add the new buffer to list */
	if (!found)
		list_add_tail(&mbuf->list, &inst->registeredbufs.list);

	mutex_unlock(&inst->registeredbufs.lock);
	if (rc == -EEXIST) {
		print_vidc_buffer(VIDC_DBG, "qbuf upon rbr", inst, mbuf);
		return ERR_PTR(rc);
	}

	return mbuf;

exit:
	dprintk(VIDC_ERR, "%s: rc %d\n", __func__, rc);
	msm_comm_unmap_vidc_buffer(inst, mbuf);
	if (!found)
		kref_put_mbuf(mbuf);
	mutex_unlock(&inst->registeredbufs.lock);

	return ERR_PTR(rc);
}

void msm_comm_put_vidc_buffer(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf)
{
	struct msm_vidc_buffer *temp;
	bool found = false;
	int i = 0;

	if (!inst || !mbuf) {
		dprintk(VIDC_ERR, "%s: invalid params %pK %pK\n",
			__func__, inst, mbuf);
		return;
	}

	mutex_lock(&inst->registeredbufs.lock);
	/* check if mbuf was not removed by any chance */
	list_for_each_entry(temp, &inst->registeredbufs.list, list) {
		if (msm_comm_compare_vb2_planes(inst, mbuf,
				&temp->vvb.vb2_buf)) {
			found = true;
			break;
		}
	}
	if (!found) {
		print_vidc_buffer(VIDC_ERR, "buf was removed", inst, mbuf);
		goto unlock;
	}

	print_vidc_buffer(VIDC_DBG, "dqbuf", inst, mbuf);
	for (i = 0; i < mbuf->vvb.vb2_buf.num_planes; i++) {
		if (msm_smem_unmap_dma_buf(inst, &mbuf->smem[i]))
			print_vidc_buffer(VIDC_ERR,
				"dqbuf: unmap failed.", inst, mbuf);

		if (!(mbuf->vvb.flags & V4L2_QCOM_BUF_FLAG_READONLY)) {
			/* rbr won't come for this buffer */
			if (msm_smem_unmap_dma_buf(inst, &mbuf->smem[i]))
				print_vidc_buffer(VIDC_ERR,
					"dqbuf: unmap failed..", inst, mbuf);
		} else {
			/* RBR event expected */
			mbuf->flags |= MSM_VIDC_FLAG_RBR_PENDING;
		}
	}
	/*
	 * remove the entry if plane[0].refcount is zero else
	 * don't remove as client queued same buffer that's why
	 * plane[0].refcount is not zero
	 */
	if (!mbuf->smem[0].refcount) {
		list_del(&mbuf->list);
		kref_put_mbuf(mbuf);
	}
unlock:
	mutex_unlock(&inst->registeredbufs.lock);
}

void handle_release_buffer_reference(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf)
{
	int rc = 0;
	struct msm_vidc_buffer *temp;
	bool found = false;
	int i = 0;

	mutex_lock(&inst->flush_lock);
	mutex_lock(&inst->registeredbufs.lock);
	found = false;
	/* check if mbuf was not removed by any chance */
	list_for_each_entry(temp, &inst->registeredbufs.list, list) {
		if (msm_comm_compare_vb2_planes(inst, mbuf,
				&temp->vvb.vb2_buf)) {
			found = true;
			break;
		}
	}
	if (found) {
		/* send RBR event to client */
		msm_vidc_queue_rbr_event(inst,
			mbuf->vvb.vb2_buf.planes[0].m.fd,
			mbuf->vvb.vb2_buf.planes[0].data_offset);

		/* clear RBR_PENDING flag */
		mbuf->flags &= ~MSM_VIDC_FLAG_RBR_PENDING;

		for (i = 0; i < mbuf->vvb.vb2_buf.num_planes; i++) {
			if (msm_smem_unmap_dma_buf(inst, &mbuf->smem[i]))
				print_vidc_buffer(VIDC_ERR,
					"rbr unmap failed.", inst, mbuf);
		}
		/* refcount is not zero if client queued the same buffer */
		if (!mbuf->smem[0].refcount) {
			list_del(&mbuf->list);
			kref_put_mbuf(mbuf);
		}
	} else {
		print_vidc_buffer(VIDC_ERR, "mbuf not found", inst, mbuf);
		goto unlock;
	}

	/*
	 * 1. client might have pushed same planes in which case mbuf will be
	 *    same and refcounts are positive and buffer wouldn't have been
	 *    removed from the registeredbufs list.
	 * 2. client might have pushed same planes[0] but different planes[1]
	 *    in which case mbuf will be different.
	 * 3. in either case we can search mbuf->smem[0].device_addr in the list
	 *    and if found queue it to video hw (if not flushing).
	 */
	found = false;
	list_for_each_entry(temp, &inst->registeredbufs.list, list) {
		if (msm_comm_compare_vb2_plane(inst, mbuf,
				&temp->vvb.vb2_buf, 0)) {
			found = true;
			break;
		}
	}
	if (!found)
		goto unlock;

	/* buffer found means client queued the buffer already */
	if (inst->in_reconfig || inst->in_flush) {
		print_vidc_buffer(VIDC_DBG, "rbr flush buf", inst, mbuf);
		msm_comm_flush_vidc_buffer(inst, mbuf);
		msm_comm_unmap_vidc_buffer(inst, mbuf);
		/* remove from list */
		list_del(&mbuf->list);
		kref_put_mbuf(mbuf);

		/* don't queue the buffer */
		found = false;
	}
	/* clear DEFERRED flag, if any, as the buffer is going to be queued */
	if (found)
		mbuf->flags &= ~MSM_VIDC_FLAG_DEFERRED;

unlock:
	mutex_unlock(&inst->registeredbufs.lock);

	if (found) {
		print_vidc_buffer(VIDC_DBG, "rbr qbuf", inst, mbuf);
		rc = msm_comm_qbuf_rbr(inst, mbuf);
		if (rc)
			print_vidc_buffer(VIDC_ERR,
				"rbr qbuf failed", inst, mbuf);
	}
	mutex_unlock(&inst->flush_lock);
}

int msm_comm_unmap_vidc_buffer(struct msm_vidc_inst *inst,
		struct msm_vidc_buffer *mbuf)
{
	int rc = 0, i;

	if (!inst || !mbuf) {
		dprintk(VIDC_ERR, "%s: invalid params %pK %pK\n",
			__func__, inst, mbuf);
		return -EINVAL;
	}
	if (mbuf->vvb.vb2_buf.num_planes > VIDEO_MAX_PLANES) {
		dprintk(VIDC_ERR, "%s: invalid num_planes %d\n", __func__,
			mbuf->vvb.vb2_buf.num_planes);
		return -EINVAL;
	}

	for (i = 0; i < mbuf->vvb.vb2_buf.num_planes; i++) {
		u32 refcount = mbuf->smem[i].refcount;

		while (refcount) {
			if (msm_smem_unmap_dma_buf(inst, &mbuf->smem[i]))
				print_vidc_buffer(VIDC_ERR,
					"unmap failed for buf", inst, mbuf);
			refcount--;
		}
	}

	return rc;
}

static void kref_free_mbuf(struct kref *kref)
{
	struct msm_vidc_buffer *mbuf = container_of(kref,
			struct msm_vidc_buffer, kref);

	kfree(mbuf);
}

void kref_put_mbuf(struct msm_vidc_buffer *mbuf)
{
	if (!mbuf)
		return;

	kref_put(&mbuf->kref, kref_free_mbuf);
}

bool kref_get_mbuf(struct msm_vidc_inst *inst, struct msm_vidc_buffer *mbuf)
{
	struct msm_vidc_buffer *temp;
	bool matches = false;
	bool ret = false;

	if (!inst || !mbuf)
		return false;

	mutex_lock(&inst->registeredbufs.lock);
	list_for_each_entry(temp, &inst->registeredbufs.list, list) {
		if (temp == mbuf) {
			matches = true;
			break;
		}
	}
	ret = (matches && kref_get_unless_zero(&mbuf->kref)) ? true : false;
	mutex_unlock(&inst->registeredbufs.lock);

	return ret;
}

void msm_comm_store_mark_data(struct msm_vidc_list *data_list,
		u32 index, u32 mark_data, u32 mark_target)
{
	struct msm_vidc_buf_data *pdata = NULL;
	bool found = false;

	if (!data_list) {
		dprintk(VIDC_ERR, "%s: invalid params %pK\n",
			__func__, data_list);
		return;
	}

	mutex_lock(&data_list->lock);
	list_for_each_entry(pdata, &data_list->list, list) {
		if (pdata->index == index) {
			pdata->mark_data = mark_data;
			pdata->mark_target = mark_target;
			found = true;
			break;
		}
	}

	if (!found) {
		pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
		if (!pdata)  {
			dprintk(VIDC_WARN, "%s: malloc failure.\n", __func__);
			goto exit;
		}
		pdata->index = index;
		pdata->mark_data = mark_data;
		pdata->mark_target = mark_target;
		list_add_tail(&pdata->list, &data_list->list);
	}

exit:
	mutex_unlock(&data_list->lock);
}

void msm_comm_fetch_mark_data(struct msm_vidc_list *data_list,
		u32 index, u32 *mark_data, u32 *mark_target)
{
	struct msm_vidc_buf_data *pdata = NULL;

	if (!data_list || !mark_data || !mark_target) {
		dprintk(VIDC_ERR, "%s: invalid params %pK %pK %pK\n",
			__func__, data_list, mark_data, mark_target);
		return;
	}

	*mark_data = *mark_target = 0;
	mutex_lock(&data_list->lock);
	list_for_each_entry(pdata, &data_list->list, list) {
		if (pdata->index == index) {
			*mark_data = pdata->mark_data;
			*mark_target = pdata->mark_target;
			/* clear after fetch */
			pdata->mark_data = pdata->mark_target = 0;
			break;
		}
	}
	mutex_unlock(&data_list->lock);
}

int msm_comm_release_mark_data(struct msm_vidc_inst *inst)
{
	struct msm_vidc_buf_data *pdata, *next;

	if (!inst) {
		dprintk(VIDC_ERR, "%s: invalid params %pK\n",
			__func__, inst);
		return -EINVAL;
	}

	mutex_lock(&inst->etb_data.lock);
	list_for_each_entry_safe(pdata, next, &inst->etb_data.list, list) {
		list_del(&pdata->list);
		kfree(pdata);
	}
	mutex_unlock(&inst->etb_data.lock);

	mutex_lock(&inst->fbd_data.lock);
	list_for_each_entry_safe(pdata, next, &inst->fbd_data.list, list) {
		list_del(&pdata->list);
		kfree(pdata);
	}
	mutex_unlock(&inst->fbd_data.lock);

	return 0;
}