drivers/media/video/s5p-mfc/s5p_mfc_opr.c

/*
 * drivers/media/video/samsung/mfc5/s5p_mfc_opr.c
 *
 * Samsung MFC (Multi Function Codec - FIMV) driver
 * This file contains hw related functions.
 *
 * Kamil Debski, Copyright (c) 2011 Samsung Electronics
 * http://www.samsung.com/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include "regs-mfc.h"
#include "s5p_mfc_cmd.h"
#include "s5p_mfc_common.h"
#include "s5p_mfc_ctrl.h"
#include "s5p_mfc_debug.h"
#include "s5p_mfc_intr.h"
#include "s5p_mfc_opr.h"
#include "s5p_mfc_pm.h"
#include "s5p_mfc_shm.h"
#include <asm/cacheflush.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/firmware.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/mm.h>
#include <linux/sched.h>

#define OFFSETA(x)		(((x) - dev->bank1) >> MFC_OFFSET_SHIFT)
#define OFFSETB(x)		(((x) - dev->bank2) >> MFC_OFFSET_SHIFT)

/* Allocate temporary buffers for decoding */
int s5p_mfc_alloc_dec_temp_buffers(struct s5p_mfc_ctx *ctx)
{
	void *desc_virt;
	struct s5p_mfc_dev *dev = ctx->dev;

	ctx->desc_buf = vb2_dma_contig_memops.alloc(
			dev->alloc_ctx[MFC_BANK1_ALLOC_CTX], DESC_BUF_SIZE);
	if (IS_ERR_VALUE((int)ctx->desc_buf)) {
		ctx->desc_buf = NULL;
		mfc_err("Allocating DESC buffer failed\n");
		return -ENOMEM;
	}
	ctx->desc_phys = s5p_mfc_mem_cookie(
			dev->alloc_ctx[MFC_BANK1_ALLOC_CTX], ctx->desc_buf);
	BUG_ON(ctx->desc_phys & ((1 << MFC_BANK1_ALIGN_ORDER) - 1));
	desc_virt = vb2_dma_contig_memops.vaddr(ctx->desc_buf);
	if (desc_virt == NULL) {
		vb2_dma_contig_memops.put(ctx->desc_buf);
		ctx->desc_phys = 0;
		ctx->desc_buf = NULL;
		mfc_err("Remapping DESC buffer failed\n");
		return -ENOMEM;
	}
	memset(desc_virt, 0, DESC_BUF_SIZE);
	wmb();
	return 0;
}

/* Release temporary buffers for decoding */
void s5p_mfc_release_dec_desc_buffer(struct s5p_mfc_ctx *ctx)
{
	if (ctx->desc_phys) {
		vb2_dma_contig_memops.put(ctx->desc_buf);
		ctx->desc_phys = 0;
		ctx->desc_buf = NULL;
	}
}

/* Allocate codec buffers */
int s5p_mfc_alloc_codec_buffers(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned int enc_ref_y_size = 0;
	unsigned int enc_ref_c_size = 0;
	unsigned int guard_width, guard_height;

	if (ctx->type == MFCINST_DECODER) {
		mfc_debug(2, "Luma size:%d Chroma size:%d MV size:%d\n",
			  ctx->luma_size, ctx->chroma_size, ctx->mv_size);
		mfc_debug(2, "Totals bufs: %d\n", ctx->total_dpb_count);
	} else if (ctx->type == MFCINST_ENCODER) {
		enc_ref_y_size = ALIGN(ctx->img_width, S5P_FIMV_NV12MT_HALIGN)
			* ALIGN(ctx->img_height, S5P_FIMV_NV12MT_VALIGN);
		enc_ref_y_size = ALIGN(enc_ref_y_size, S5P_FIMV_NV12MT_SALIGN);

		if (ctx->codec_mode == S5P_FIMV_CODEC_H264_ENC) {
			enc_ref_c_size = ALIGN(ctx->img_width,
						S5P_FIMV_NV12MT_HALIGN)
						* ALIGN(ctx->img_height >> 1,
						S5P_FIMV_NV12MT_VALIGN);
			enc_ref_c_size = ALIGN(enc_ref_c_size,
							S5P_FIMV_NV12MT_SALIGN);
		} else {
			guard_width = ALIGN(ctx->img_width + 16,
							S5P_FIMV_NV12MT_HALIGN);
			guard_height = ALIGN((ctx->img_height >> 1) + 4,
							S5P_FIMV_NV12MT_VALIGN);
			enc_ref_c_size = ALIGN(guard_width * guard_height,
					       S5P_FIMV_NV12MT_SALIGN);
		}
		mfc_debug(2, "recon luma size: %d chroma size: %d\n",
			  enc_ref_y_size, enc_ref_c_size);
	} else {
		return -EINVAL;
	}
	/* Codecs have different memory requirements */
	switch (ctx->codec_mode) {
	case S5P_FIMV_CODEC_H264_DEC:
		ctx->bank1_size =
		    ALIGN(S5P_FIMV_DEC_NB_IP_SIZE +
					S5P_FIMV_DEC_VERT_NB_MV_SIZE,
					S5P_FIMV_DEC_BUF_ALIGN);
		ctx->bank2_size = ctx->total_dpb_count * ctx->mv_size;
		break;
	case S5P_FIMV_CODEC_MPEG4_DEC:
		ctx->bank1_size =
		    ALIGN(S5P_FIMV_DEC_NB_DCAC_SIZE +
				     S5P_FIMV_DEC_UPNB_MV_SIZE +
				     S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE +
				     S5P_FIMV_DEC_STX_PARSER_SIZE +
				     S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE,
				     S5P_FIMV_DEC_BUF_ALIGN);
		ctx->bank2_size = 0;
		break;
	case S5P_FIMV_CODEC_VC1RCV_DEC:
	case S5P_FIMV_CODEC_VC1_DEC:
		ctx->bank1_size =
		    ALIGN(S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE +
			     S5P_FIMV_DEC_UPNB_MV_SIZE +
			     S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE +
			     S5P_FIMV_DEC_NB_DCAC_SIZE +
			     3 * S5P_FIMV_DEC_VC1_BITPLANE_SIZE,
			     S5P_FIMV_DEC_BUF_ALIGN);
		ctx->bank2_size = 0;
		break;
	case S5P_FIMV_CODEC_MPEG2_DEC:
		ctx->bank1_size = 0;
		ctx->bank2_size = 0;
		break;
	case S5P_FIMV_CODEC_H263_DEC:
		ctx->bank1_size =
		    ALIGN(S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE +
			     S5P_FIMV_DEC_UPNB_MV_SIZE +
			     S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE +
			     S5P_FIMV_DEC_NB_DCAC_SIZE,
			     S5P_FIMV_DEC_BUF_ALIGN);
		ctx->bank2_size = 0;
		break;
	case S5P_FIMV_CODEC_H264_ENC:
		ctx->bank1_size = (enc_ref_y_size * 2) +
				   S5P_FIMV_ENC_UPMV_SIZE +
				   S5P_FIMV_ENC_COLFLG_SIZE +
				   S5P_FIMV_ENC_INTRAMD_SIZE +
				   S5P_FIMV_ENC_NBORINFO_SIZE;
		ctx->bank2_size = (enc_ref_y_size * 2) +
				   (enc_ref_c_size * 4) +
				   S5P_FIMV_ENC_INTRAPRED_SIZE;
		break;
	case S5P_FIMV_CODEC_MPEG4_ENC:
		ctx->bank1_size = (enc_ref_y_size * 2) +
				   S5P_FIMV_ENC_UPMV_SIZE +
				   S5P_FIMV_ENC_COLFLG_SIZE +
				   S5P_FIMV_ENC_ACDCCOEF_SIZE;
		ctx->bank2_size = (enc_ref_y_size * 2) +
				   (enc_ref_c_size * 4);
		break;
	case S5P_FIMV_CODEC_H263_ENC:
		ctx->bank1_size = (enc_ref_y_size * 2) +
				   S5P_FIMV_ENC_UPMV_SIZE +
				   S5P_FIMV_ENC_ACDCCOEF_SIZE;
		ctx->bank2_size = (enc_ref_y_size * 2) +
				   (enc_ref_c_size * 4);
		break;
	default:
		break;
	}
	/* Allocate only if memory from bank 1 is necessary */
	if (ctx->bank1_size > 0) {
		ctx->bank1_buf = vb2_dma_contig_memops.alloc(
		dev->alloc_ctx[MFC_BANK1_ALLOC_CTX], ctx->bank1_size);
		if (IS_ERR(ctx->bank1_buf)) {
			ctx->bank1_buf = NULL;
			printk(KERN_ERR
			       "Buf alloc for decoding failed (port A)\n");
			return -ENOMEM;
		}
		ctx->bank1_phys = s5p_mfc_mem_cookie(
		dev->alloc_ctx[MFC_BANK1_ALLOC_CTX], ctx->bank1_buf);
		BUG_ON(ctx->bank1_phys & ((1 << MFC_BANK1_ALIGN_ORDER) - 1));
	}
	/* Allocate only if memory from bank 2 is necessary */
	if (ctx->bank2_size > 0) {
		ctx->bank2_buf = vb2_dma_contig_memops.alloc(
		dev->alloc_ctx[MFC_BANK2_ALLOC_CTX], ctx->bank2_size);
		if (IS_ERR(ctx->bank2_buf)) {
			ctx->bank2_buf = NULL;
			mfc_err("Buf alloc for decoding failed (port B)\n");
			return -ENOMEM;
		}
		ctx->bank2_phys = s5p_mfc_mem_cookie(
		dev->alloc_ctx[MFC_BANK2_ALLOC_CTX], ctx->bank2_buf);
		BUG_ON(ctx->bank2_phys & ((1 << MFC_BANK2_ALIGN_ORDER) - 1));
	}
	return 0;
}

/* Release buffers allocated for codec */
void s5p_mfc_release_codec_buffers(struct s5p_mfc_ctx *ctx)
{
	if (ctx->bank1_buf) {
		vb2_dma_contig_memops.put(ctx->bank1_buf);
		ctx->bank1_buf = NULL;
		ctx->bank1_phys = 0;
		ctx->bank1_size = 0;
	}
	if (ctx->bank2_buf) {
		vb2_dma_contig_memops.put(ctx->bank2_buf);
		ctx->bank2_buf = NULL;
		ctx->bank2_phys = 0;
		ctx->bank2_size = 0;
	}
}

/* Allocate memory for instance data buffer */
int s5p_mfc_alloc_instance_buffer(struct s5p_mfc_ctx *ctx)
{
	void *context_virt;
	struct s5p_mfc_dev *dev = ctx->dev;

	if (ctx->codec_mode == S5P_FIMV_CODEC_H264_DEC ||
		ctx->codec_mode == S5P_FIMV_CODEC_H264_ENC)
		ctx->ctx_size = MFC_H264_CTX_BUF_SIZE;
	else
		ctx->ctx_size = MFC_CTX_BUF_SIZE;
	ctx->ctx_buf = vb2_dma_contig_memops.alloc(
		dev->alloc_ctx[MFC_BANK1_ALLOC_CTX], ctx->ctx_size);
	if (IS_ERR(ctx->ctx_buf)) {
		mfc_err("Allocating context buffer failed\n");
		ctx->ctx_phys = 0;
		ctx->ctx_buf = NULL;
		return -ENOMEM;
	}
	ctx->ctx_phys = s5p_mfc_mem_cookie(
		dev->alloc_ctx[MFC_BANK1_ALLOC_CTX], ctx->ctx_buf);
	BUG_ON(ctx->ctx_phys & ((1 << MFC_BANK1_ALIGN_ORDER) - 1));
	ctx->ctx_ofs = OFFSETA(ctx->ctx_phys);
	context_virt = vb2_dma_contig_memops.vaddr(ctx->ctx_buf);
	if (context_virt == NULL) {
		mfc_err("Remapping instance buffer failed\n");
		vb2_dma_contig_memops.put(ctx->ctx_buf);
		ctx->ctx_phys = 0;
		ctx->ctx_buf = NULL;
		return -ENOMEM;
	}
	/* Zero content of the allocated memory */
	memset(context_virt, 0, ctx->ctx_size);
	wmb();
	if (s5p_mfc_init_shm(ctx) < 0) {
		vb2_dma_contig_memops.put(ctx->ctx_buf);
		ctx->ctx_phys = 0;
		ctx->ctx_buf = NULL;
		return -ENOMEM;
	}
	return 0;
}

/* Release instance buffer */
void s5p_mfc_release_instance_buffer(struct s5p_mfc_ctx *ctx)
{
	if (ctx->ctx_buf) {
		vb2_dma_contig_memops.put(ctx->ctx_buf);
		ctx->ctx_phys = 0;
		ctx->ctx_buf = NULL;
	}
	if (ctx->shm_alloc) {
		vb2_dma_contig_memops.put(ctx->shm_alloc);
		ctx->shm_alloc = NULL;
		ctx->shm = NULL;
	}
}

/* Set registers for decoding temporary buffers */
void s5p_mfc_set_dec_desc_buffer(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	mfc_write(dev, OFFSETA(ctx->desc_phys), S5P_FIMV_SI_CH0_DESC_ADR);
	mfc_write(dev, DESC_BUF_SIZE, S5P_FIMV_SI_CH0_DESC_SIZE);
}

/* Set registers for shared buffer */
static void s5p_mfc_set_shared_buffer(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	mfc_write(dev, ctx->shm_ofs, S5P_FIMV_SI_CH0_HOST_WR_ADR);
}

/* Set registers for decoding stream buffer */
int s5p_mfc_set_dec_stream_buffer(struct s5p_mfc_ctx *ctx, int buf_addr,
		  unsigned int start_num_byte, unsigned int buf_size)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	mfc_write(dev, OFFSETA(buf_addr), S5P_FIMV_SI_CH0_SB_ST_ADR);
	mfc_write(dev, ctx->dec_src_buf_size, S5P_FIMV_SI_CH0_CPB_SIZE);
	mfc_write(dev, buf_size, S5P_FIMV_SI_CH0_SB_FRM_SIZE);
	s5p_mfc_write_shm(ctx, start_num_byte, START_BYTE_NUM);
	return 0;
}

/* Set decoding frame buffer */
int s5p_mfc_set_dec_frame_buffer(struct s5p_mfc_ctx *ctx)
{
	unsigned int frame_size, i;
	unsigned int frame_size_ch, frame_size_mv;
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned int dpb;
	size_t buf_addr1, buf_addr2;
	int buf_size1, buf_size2;

	buf_addr1 = ctx->bank1_phys;
	buf_size1 = ctx->bank1_size;
	buf_addr2 = ctx->bank2_phys;
	buf_size2 = ctx->bank2_size;
	dpb = mfc_read(dev, S5P_FIMV_SI_CH0_DPB_CONF_CTRL) &
						~S5P_FIMV_DPB_COUNT_MASK;
	mfc_write(dev, ctx->total_dpb_count | dpb,
						S5P_FIMV_SI_CH0_DPB_CONF_CTRL);
	s5p_mfc_set_shared_buffer(ctx);
	switch (ctx->codec_mode) {
	case S5P_FIMV_CODEC_H264_DEC:
		mfc_write(dev, OFFSETA(buf_addr1),
						S5P_FIMV_H264_VERT_NB_MV_ADR);
		buf_addr1 += S5P_FIMV_DEC_VERT_NB_MV_SIZE;
		buf_size1 -= S5P_FIMV_DEC_VERT_NB_MV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_H264_NB_IP_ADR);
		buf_addr1 += S5P_FIMV_DEC_NB_IP_SIZE;
		buf_size1 -= S5P_FIMV_DEC_NB_IP_SIZE;
		break;
	case S5P_FIMV_CODEC_MPEG4_DEC:
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_MPEG4_NB_DCAC_ADR);
		buf_addr1 += S5P_FIMV_DEC_NB_DCAC_SIZE;
		buf_size1 -= S5P_FIMV_DEC_NB_DCAC_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_MPEG4_UP_NB_MV_ADR);
		buf_addr1 += S5P_FIMV_DEC_UPNB_MV_SIZE;
		buf_size1 -= S5P_FIMV_DEC_UPNB_MV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_MPEG4_SA_MV_ADR);
		buf_addr1 += S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE;
		buf_size1 -= S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_MPEG4_SP_ADR);
		buf_addr1 += S5P_FIMV_DEC_STX_PARSER_SIZE;
		buf_size1 -= S5P_FIMV_DEC_STX_PARSER_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_MPEG4_OT_LINE_ADR);
		buf_addr1 += S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE;
		buf_size1 -= S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE;
		break;
	case S5P_FIMV_CODEC_H263_DEC:
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_H263_OT_LINE_ADR);
		buf_addr1 += S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE;
		buf_size1 -= S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_H263_UP_NB_MV_ADR);
		buf_addr1 += S5P_FIMV_DEC_UPNB_MV_SIZE;
		buf_size1 -= S5P_FIMV_DEC_UPNB_MV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_H263_SA_MV_ADR);
		buf_addr1 += S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE;
		buf_size1 -= S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_H263_NB_DCAC_ADR);
		buf_addr1 += S5P_FIMV_DEC_NB_DCAC_SIZE;
		buf_size1 -= S5P_FIMV_DEC_NB_DCAC_SIZE;
		break;
	case S5P_FIMV_CODEC_VC1_DEC:
	case S5P_FIMV_CODEC_VC1RCV_DEC:
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_VC1_NB_DCAC_ADR);
		buf_addr1 += S5P_FIMV_DEC_NB_DCAC_SIZE;
		buf_size1 -= S5P_FIMV_DEC_NB_DCAC_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_VC1_OT_LINE_ADR);
		buf_addr1 += S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE;
		buf_size1 -= S5P_FIMV_DEC_OVERLAP_TRANSFORM_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_VC1_UP_NB_MV_ADR);
		buf_addr1 += S5P_FIMV_DEC_UPNB_MV_SIZE;
		buf_size1 -= S5P_FIMV_DEC_UPNB_MV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_VC1_SA_MV_ADR);
		buf_addr1 += S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE;
		buf_size1 -= S5P_FIMV_DEC_SUB_ANCHOR_MV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_VC1_BITPLANE3_ADR);
		buf_addr1 += S5P_FIMV_DEC_VC1_BITPLANE_SIZE;
		buf_size1 -= S5P_FIMV_DEC_VC1_BITPLANE_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_VC1_BITPLANE2_ADR);
		buf_addr1 += S5P_FIMV_DEC_VC1_BITPLANE_SIZE;
		buf_size1 -= S5P_FIMV_DEC_VC1_BITPLANE_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_VC1_BITPLANE1_ADR);
		buf_addr1 += S5P_FIMV_DEC_VC1_BITPLANE_SIZE;
		buf_size1 -= S5P_FIMV_DEC_VC1_BITPLANE_SIZE;
		break;
	case S5P_FIMV_CODEC_MPEG2_DEC:
		break;
	default:
		mfc_err("Unknown codec for decoding (%x)\n",
			ctx->codec_mode);
		return -EINVAL;
		break;
	}
	frame_size = ctx->luma_size;
	frame_size_ch = ctx->chroma_size;
	frame_size_mv = ctx->mv_size;
	mfc_debug(2, "Frm size: %d ch: %d mv: %d\n", frame_size, frame_size_ch,
								frame_size_mv);
	for (i = 0; i < ctx->total_dpb_count; i++) {
		/* Bank2 */
		mfc_debug(2, "Luma %d: %x\n", i,
					ctx->dst_bufs[i].cookie.raw.luma);
		mfc_write(dev, OFFSETB(ctx->dst_bufs[i].cookie.raw.luma),
						S5P_FIMV_DEC_LUMA_ADR + i * 4);
		mfc_debug(2, "\tChroma %d: %x\n", i,
					ctx->dst_bufs[i].cookie.raw.chroma);
		mfc_write(dev, OFFSETA(ctx->dst_bufs[i].cookie.raw.chroma),
					       S5P_FIMV_DEC_CHROMA_ADR + i * 4);
		if (ctx->codec_mode == S5P_FIMV_CODEC_H264_DEC) {
			mfc_debug(2, "\tBuf2: %x, size: %d\n",
							buf_addr2, buf_size2);
			mfc_write(dev, OFFSETB(buf_addr2),
						S5P_FIMV_H264_MV_ADR + i * 4);
			buf_addr2 += frame_size_mv;
			buf_size2 -= frame_size_mv;
		}
	}
	mfc_debug(2, "Buf1: %u, buf_size1: %d\n", buf_addr1, buf_size1);
	mfc_debug(2, "Buf 1/2 size after: %d/%d (frames %d)\n",
			buf_size1,  buf_size2, ctx->total_dpb_count);
	if (buf_size1 < 0 || buf_size2 < 0) {
		mfc_debug(2, "Not enough memory has been allocated\n");
		return -ENOMEM;
	}
	s5p_mfc_write_shm(ctx, frame_size, ALLOC_LUMA_DPB_SIZE);
	s5p_mfc_write_shm(ctx, frame_size_ch, ALLOC_CHROMA_DPB_SIZE);
	if (ctx->codec_mode == S5P_FIMV_CODEC_H264_DEC)
		s5p_mfc_write_shm(ctx, frame_size_mv, ALLOC_MV_SIZE);
	mfc_write(dev, ((S5P_FIMV_CH_INIT_BUFS & S5P_FIMV_CH_MASK)
					<< S5P_FIMV_CH_SHIFT) | (ctx->inst_no),
						S5P_FIMV_SI_CH0_INST_ID);
	return 0;
}

/* Set registers for encoding stream buffer */
int s5p_mfc_set_enc_stream_buffer(struct s5p_mfc_ctx *ctx,
		unsigned long addr, unsigned int size)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	mfc_write(dev, OFFSETA(addr), S5P_FIMV_ENC_SI_CH0_SB_ADR);
	mfc_write(dev, size, S5P_FIMV_ENC_SI_CH0_SB_SIZE);
	return 0;
}

void s5p_mfc_set_enc_frame_buffer(struct s5p_mfc_ctx *ctx,
		unsigned long y_addr, unsigned long c_addr)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	mfc_write(dev, OFFSETB(y_addr), S5P_FIMV_ENC_SI_CH0_CUR_Y_ADR);
	mfc_write(dev, OFFSETB(c_addr), S5P_FIMV_ENC_SI_CH0_CUR_C_ADR);
}

void s5p_mfc_get_enc_frame_buffer(struct s5p_mfc_ctx *ctx,
		unsigned long *y_addr, unsigned long *c_addr)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	*y_addr = dev->bank2 + (mfc_read(dev, S5P_FIMV_ENCODED_Y_ADDR)
							<< MFC_OFFSET_SHIFT);
	*c_addr = dev->bank2 + (mfc_read(dev, S5P_FIMV_ENCODED_C_ADDR)
							<< MFC_OFFSET_SHIFT);
}

/* Set encoding ref & codec buffer */
int s5p_mfc_set_enc_ref_buffer(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	size_t buf_addr1, buf_addr2;
	size_t buf_size1, buf_size2;
	unsigned int enc_ref_y_size, enc_ref_c_size;
	unsigned int guard_width, guard_height;
	int i;

	buf_addr1 = ctx->bank1_phys;
	buf_size1 = ctx->bank1_size;
	buf_addr2 = ctx->bank2_phys;
	buf_size2 = ctx->bank2_size;
	enc_ref_y_size = ALIGN(ctx->img_width, S5P_FIMV_NV12MT_HALIGN)
		* ALIGN(ctx->img_height, S5P_FIMV_NV12MT_VALIGN);
	enc_ref_y_size = ALIGN(enc_ref_y_size, S5P_FIMV_NV12MT_SALIGN);
	if (ctx->codec_mode == S5P_FIMV_CODEC_H264_ENC) {
		enc_ref_c_size = ALIGN(ctx->img_width, S5P_FIMV_NV12MT_HALIGN)
			* ALIGN((ctx->img_height >> 1), S5P_FIMV_NV12MT_VALIGN);
		enc_ref_c_size = ALIGN(enc_ref_c_size, S5P_FIMV_NV12MT_SALIGN);
	} else {
		guard_width = ALIGN(ctx->img_width + 16,
						S5P_FIMV_NV12MT_HALIGN);
		guard_height = ALIGN((ctx->img_height >> 1) + 4,
						S5P_FIMV_NV12MT_VALIGN);
		enc_ref_c_size = ALIGN(guard_width * guard_height,
				       S5P_FIMV_NV12MT_SALIGN);
	}
	mfc_debug(2, "buf_size1: %d, buf_size2: %d\n", buf_size1, buf_size2);
	switch (ctx->codec_mode) {
	case S5P_FIMV_CODEC_H264_ENC:
		for (i = 0; i < 2; i++) {
			mfc_write(dev, OFFSETA(buf_addr1),
				S5P_FIMV_ENC_REF0_LUMA_ADR + (4 * i));
			buf_addr1 += enc_ref_y_size;
			buf_size1 -= enc_ref_y_size;

			mfc_write(dev, OFFSETB(buf_addr2),
				S5P_FIMV_ENC_REF2_LUMA_ADR + (4 * i));
			buf_addr2 += enc_ref_y_size;
			buf_size2 -= enc_ref_y_size;
		}
		for (i = 0; i < 4; i++) {
			mfc_write(dev, OFFSETB(buf_addr2),
				S5P_FIMV_ENC_REF0_CHROMA_ADR + (4 * i));
			buf_addr2 += enc_ref_c_size;
			buf_size2 -= enc_ref_c_size;
		}
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_H264_UP_MV_ADR);
		buf_addr1 += S5P_FIMV_ENC_UPMV_SIZE;
		buf_size1 -= S5P_FIMV_ENC_UPMV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1),
					S5P_FIMV_H264_COZERO_FLAG_ADR);
		buf_addr1 += S5P_FIMV_ENC_COLFLG_SIZE;
		buf_size1 -= S5P_FIMV_ENC_COLFLG_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1),
					S5P_FIMV_H264_UP_INTRA_MD_ADR);
		buf_addr1 += S5P_FIMV_ENC_INTRAMD_SIZE;
		buf_size1 -= S5P_FIMV_ENC_INTRAMD_SIZE;
		mfc_write(dev, OFFSETB(buf_addr2),
					S5P_FIMV_H264_UP_INTRA_PRED_ADR);
		buf_addr2 += S5P_FIMV_ENC_INTRAPRED_SIZE;
		buf_size2 -= S5P_FIMV_ENC_INTRAPRED_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1),
					S5P_FIMV_H264_NBOR_INFO_ADR);
		buf_addr1 += S5P_FIMV_ENC_NBORINFO_SIZE;
		buf_size1 -= S5P_FIMV_ENC_NBORINFO_SIZE;
		mfc_debug(2, "buf_size1: %d, buf_size2: %d\n",
			buf_size1, buf_size2);
		break;
	case S5P_FIMV_CODEC_MPEG4_ENC:
		for (i = 0; i < 2; i++) {
			mfc_write(dev, OFFSETA(buf_addr1),
				S5P_FIMV_ENC_REF0_LUMA_ADR + (4 * i));
			buf_addr1 += enc_ref_y_size;
			buf_size1 -= enc_ref_y_size;
			mfc_write(dev, OFFSETB(buf_addr2),
				S5P_FIMV_ENC_REF2_LUMA_ADR + (4 * i));
			buf_addr2 += enc_ref_y_size;
			buf_size2 -= enc_ref_y_size;
		}
		for (i = 0; i < 4; i++) {
			mfc_write(dev, OFFSETB(buf_addr2),
				S5P_FIMV_ENC_REF0_CHROMA_ADR + (4 * i));
			buf_addr2 += enc_ref_c_size;
			buf_size2 -= enc_ref_c_size;
		}
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_MPEG4_UP_MV_ADR);
		buf_addr1 += S5P_FIMV_ENC_UPMV_SIZE;
		buf_size1 -= S5P_FIMV_ENC_UPMV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1),
						S5P_FIMV_MPEG4_COZERO_FLAG_ADR);
		buf_addr1 += S5P_FIMV_ENC_COLFLG_SIZE;
		buf_size1 -= S5P_FIMV_ENC_COLFLG_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1),
						S5P_FIMV_MPEG4_ACDC_COEF_ADR);
		buf_addr1 += S5P_FIMV_ENC_ACDCCOEF_SIZE;
		buf_size1 -= S5P_FIMV_ENC_ACDCCOEF_SIZE;
		mfc_debug(2, "buf_size1: %d, buf_size2: %d\n",
			buf_size1, buf_size2);
		break;
	case S5P_FIMV_CODEC_H263_ENC:
		for (i = 0; i < 2; i++) {
			mfc_write(dev, OFFSETA(buf_addr1),
				S5P_FIMV_ENC_REF0_LUMA_ADR + (4 * i));
			buf_addr1 += enc_ref_y_size;
			buf_size1 -= enc_ref_y_size;
			mfc_write(dev, OFFSETB(buf_addr2),
				S5P_FIMV_ENC_REF2_LUMA_ADR + (4 * i));
			buf_addr2 += enc_ref_y_size;
			buf_size2 -= enc_ref_y_size;
		}
		for (i = 0; i < 4; i++) {
			mfc_write(dev, OFFSETB(buf_addr2),
				S5P_FIMV_ENC_REF0_CHROMA_ADR + (4 * i));
			buf_addr2 += enc_ref_c_size;
			buf_size2 -= enc_ref_c_size;
		}
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_H263_UP_MV_ADR);
		buf_addr1 += S5P_FIMV_ENC_UPMV_SIZE;
		buf_size1 -= S5P_FIMV_ENC_UPMV_SIZE;
		mfc_write(dev, OFFSETA(buf_addr1), S5P_FIMV_H263_ACDC_COEF_ADR);
		buf_addr1 += S5P_FIMV_ENC_ACDCCOEF_SIZE;
		buf_size1 -= S5P_FIMV_ENC_ACDCCOEF_SIZE;
		mfc_debug(2, "buf_size1: %d, buf_size2: %d\n",
			buf_size1, buf_size2);
		break;
	default:
		mfc_err("Unknown codec set for encoding: %d\n",
			ctx->codec_mode);
		return -EINVAL;
	}
	return 0;
}

static int s5p_mfc_set_enc_params(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	struct s5p_mfc_enc_params *p = &ctx->enc_params;
	unsigned int reg;
	unsigned int shm;

	/* width */
	mfc_write(dev, ctx->img_width, S5P_FIMV_ENC_HSIZE_PX);
	/* height */
	mfc_write(dev, ctx->img_height, S5P_FIMV_ENC_VSIZE_PX);
	/* pictype : enable, IDR period */
	reg = mfc_read(dev, S5P_FIMV_ENC_PIC_TYPE_CTRL);
	reg |= (1 << 18);
	reg &= ~(0xFFFF);
	reg |= p->gop_size;
	mfc_write(dev, reg, S5P_FIMV_ENC_PIC_TYPE_CTRL);
	mfc_write(dev, 0, S5P_FIMV_ENC_B_RECON_WRITE_ON);
	/* multi-slice control */
	/* multi-slice MB number or bit size */
	mfc_write(dev, p->slice_mode, S5P_FIMV_ENC_MSLICE_CTRL);
	if (p->slice_mode == V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB) {
		mfc_write(dev, p->slice_mb, S5P_FIMV_ENC_MSLICE_MB);
	} else if (p->slice_mode == V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES) {
		mfc_write(dev, p->slice_bit, S5P_FIMV_ENC_MSLICE_BIT);
	} else {
		mfc_write(dev, 0, S5P_FIMV_ENC_MSLICE_MB);
		mfc_write(dev, 0, S5P_FIMV_ENC_MSLICE_BIT);
	}
	/* cyclic intra refresh */
	mfc_write(dev, p->intra_refresh_mb, S5P_FIMV_ENC_CIR_CTRL);
	/* memory structure cur. frame */
	if (ctx->src_fmt->fourcc == V4L2_PIX_FMT_NV12M)
		mfc_write(dev, 0, S5P_FIMV_ENC_MAP_FOR_CUR);
	else if (ctx->src_fmt->fourcc == V4L2_PIX_FMT_NV12MT)
		mfc_write(dev, 3, S5P_FIMV_ENC_MAP_FOR_CUR);
	/* padding control & value */
	reg = mfc_read(dev, S5P_FIMV_ENC_PADDING_CTRL);
	if (p->pad) {
		/** enable */
		reg |= (1 << 31);
		/** cr value */
		reg &= ~(0xFF << 16);
		reg |= (p->pad_cr << 16);
		/** cb value */
		reg &= ~(0xFF << 8);
		reg |= (p->pad_cb << 8);
		/** y value */
		reg &= ~(0xFF);
		reg |= (p->pad_luma);
	} else {
		/** disable & all value clear */
		reg = 0;
	}
	mfc_write(dev, reg, S5P_FIMV_ENC_PADDING_CTRL);
	/* rate control config. */
	reg = mfc_read(dev, S5P_FIMV_ENC_RC_CONFIG);
	/** frame-level rate control */
	reg &= ~(0x1 << 9);
	reg |= (p->rc_frame << 9);
	mfc_write(dev, reg, S5P_FIMV_ENC_RC_CONFIG);
	/* bit rate */
	if (p->rc_frame)
		mfc_write(dev, p->rc_bitrate,
			S5P_FIMV_ENC_RC_BIT_RATE);
	else
		mfc_write(dev, 0, S5P_FIMV_ENC_RC_BIT_RATE);
	/* reaction coefficient */
	if (p->rc_frame)
		mfc_write(dev, p->rc_reaction_coeff, S5P_FIMV_ENC_RC_RPARA);
	shm = s5p_mfc_read_shm(ctx, EXT_ENC_CONTROL);
	/* seq header ctrl */
	shm &= ~(0x1 << 3);
	shm |= (p->seq_hdr_mode << 3);
	/* frame skip mode */
	shm &= ~(0x3 << 1);
	shm |= (p->frame_skip_mode << 1);
	s5p_mfc_write_shm(ctx, shm, EXT_ENC_CONTROL);
	/* fixed target bit */
	s5p_mfc_write_shm(ctx, p->fixed_target_bit, RC_CONTROL_CONFIG);
	return 0;
}

static int s5p_mfc_set_enc_params_h264(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	struct s5p_mfc_enc_params *p = &ctx->enc_params;
	struct s5p_mfc_h264_enc_params *p_264 = &p->codec.h264;
	unsigned int reg;
	unsigned int shm;

	s5p_mfc_set_enc_params(ctx);
	/* pictype : number of B */
	reg = mfc_read(dev, S5P_FIMV_ENC_PIC_TYPE_CTRL);
	/* num_b_frame - 0 ~ 2 */
	reg &= ~(0x3 << 16);
	reg |= (p->num_b_frame << 16);
	mfc_write(dev, reg, S5P_FIMV_ENC_PIC_TYPE_CTRL);
	/* profile & level */
	reg = mfc_read(dev, S5P_FIMV_ENC_PROFILE);
	/* level */
	reg &= ~(0xFF << 8);
	reg |= (p_264->level << 8);
	/* profile - 0 ~ 2 */
	reg &= ~(0x3F);
	reg |= p_264->profile;
	mfc_write(dev, reg, S5P_FIMV_ENC_PROFILE);
	/* interlace  */
	mfc_write(dev, p->interlace, S5P_FIMV_ENC_PIC_STRUCT);
	/* height */
	if (p->interlace)
		mfc_write(dev, ctx->img_height >> 1, S5P_FIMV_ENC_VSIZE_PX);
	/* loopfilter ctrl */
	mfc_write(dev, p_264->loop_filter_mode, S5P_FIMV_ENC_LF_CTRL);
	/* loopfilter alpha offset */
	if (p_264->loop_filter_alpha < 0) {
		reg = 0x10;
		reg |= (0xFF - p_264->loop_filter_alpha) + 1;
	} else {
		reg = 0x00;
		reg |= (p_264->loop_filter_alpha & 0xF);
	}
	mfc_write(dev, reg, S5P_FIMV_ENC_ALPHA_OFF);
	/* loopfilter beta offset */
	if (p_264->loop_filter_beta < 0) {
		reg = 0x10;
		reg |= (0xFF - p_264->loop_filter_beta) + 1;
	} else {
		reg = 0x00;
		reg |= (p_264->loop_filter_beta & 0xF);
	}
	mfc_write(dev, reg, S5P_FIMV_ENC_BETA_OFF);
	/* entropy coding mode */
	if (p_264->entropy_mode == V4L2_MPEG_VIDEO_H264_ENTROPY_MODE_CABAC)
		mfc_write(dev, 1, S5P_FIMV_ENC_H264_ENTROPY_MODE);
	else
		mfc_write(dev, 0, S5P_FIMV_ENC_H264_ENTROPY_MODE);
	/* number of ref. picture */
	reg = mfc_read(dev, S5P_FIMV_ENC_H264_NUM_OF_REF);
	/* num of ref. pictures of P */
	reg &= ~(0x3 << 5);
	reg |= (p_264->num_ref_pic_4p << 5);
	/* max number of ref. pictures */
	reg &= ~(0x1F);
	reg |= p_264->max_ref_pic;
	mfc_write(dev, reg, S5P_FIMV_ENC_H264_NUM_OF_REF);
	/* 8x8 transform enable */
	mfc_write(dev, p_264->_8x8_transform, S5P_FIMV_ENC_H264_TRANS_FLAG);
	/* rate control config. */
	reg = mfc_read(dev, S5P_FIMV_ENC_RC_CONFIG);
	/* macroblock level rate control */
	reg &= ~(0x1 << 8);
	reg |= (p_264->rc_mb << 8);
	/* frame QP */
	reg &= ~(0x3F);
	reg |= p_264->rc_frame_qp;
	mfc_write(dev, reg, S5P_FIMV_ENC_RC_CONFIG);
	/* frame rate */
	if (p->rc_frame && p->rc_framerate_denom)
		mfc_write(dev, p->rc_framerate_num * 1000
			/ p->rc_framerate_denom, S5P_FIMV_ENC_RC_FRAME_RATE);
	else
		mfc_write(dev, 0, S5P_FIMV_ENC_RC_FRAME_RATE);
	/* max & min value of QP */
	reg = mfc_read(dev, S5P_FIMV_ENC_RC_QBOUND);
	/* max QP */
	reg &= ~(0x3F << 8);
	reg |= (p_264->rc_max_qp << 8);
	/* min QP */
	reg &= ~(0x3F);
	reg |= p_264->rc_min_qp;
	mfc_write(dev, reg, S5P_FIMV_ENC_RC_QBOUND);
	/* macroblock adaptive scaling features */
	if (p_264->rc_mb) {
		reg = mfc_read(dev, S5P_FIMV_ENC_RC_MB_CTRL);
		/* dark region */
		reg &= ~(0x1 << 3);
		reg |= (p_264->rc_mb_dark << 3);
		/* smooth region */
		reg &= ~(0x1 << 2);
		reg |= (p_264->rc_mb_smooth << 2);
		/* static region */
		reg &= ~(0x1 << 1);
		reg |= (p_264->rc_mb_static << 1);
		/* high activity region */
		reg &= ~(0x1);
		reg |= p_264->rc_mb_activity;
		mfc_write(dev, reg, S5P_FIMV_ENC_RC_MB_CTRL);
	}
	if (!p->rc_frame &&
	    !p_264->rc_mb) {
		shm = s5p_mfc_read_shm(ctx, P_B_FRAME_QP);
		shm &= ~(0xFFF);
		shm |= ((p_264->rc_b_frame_qp & 0x3F) << 6);
		shm |= (p_264->rc_p_frame_qp & 0x3F);
		s5p_mfc_write_shm(ctx, shm, P_B_FRAME_QP);
	}
	/* extended encoder ctrl */
	shm = s5p_mfc_read_shm(ctx, EXT_ENC_CONTROL);
	/* AR VUI control */
	shm &= ~(0x1 << 15);
	shm |= (p_264->vui_sar << 1);
	s5p_mfc_write_shm(ctx, shm, EXT_ENC_CONTROL);
	if (p_264->vui_sar) {
		/* aspect ration IDC */
		shm = s5p_mfc_read_shm(ctx, SAMPLE_ASPECT_RATIO_IDC);
		shm &= ~(0xFF);
		shm |= p_264->vui_sar_idc;
		s5p_mfc_write_shm(ctx, shm, SAMPLE_ASPECT_RATIO_IDC);
		if (p_264->vui_sar_idc == 0xFF) {
			/* sample  AR info */
			shm = s5p_mfc_read_shm(ctx, EXTENDED_SAR);
			shm &= ~(0xFFFFFFFF);
			shm |= p_264->vui_ext_sar_width << 16;
			shm |= p_264->vui_ext_sar_height;
			s5p_mfc_write_shm(ctx, shm, EXTENDED_SAR);
		}
	}
	/* intra picture period for H.264 */
	shm = s5p_mfc_read_shm(ctx, H264_I_PERIOD);
	/* control */
	shm &= ~(0x1 << 16);
	shm |= (p_264->open_gop << 16);
	/* value */
	if (p_264->open_gop) {
		shm &= ~(0xFFFF);
		shm |= p_264->open_gop_size;
	}
	s5p_mfc_write_shm(ctx, shm, H264_I_PERIOD);
	/* extended encoder ctrl */
	shm = s5p_mfc_read_shm(ctx, EXT_ENC_CONTROL);
	/* vbv buffer size */
	if (p->frame_skip_mode ==
			V4L2_MPEG_MFC51_VIDEO_FRAME_SKIP_MODE_BUF_LIMIT) {
		shm &= ~(0xFFFF << 16);
		shm |= (p_264->cpb_size << 16);
	}
	s5p_mfc_write_shm(ctx, shm, EXT_ENC_CONTROL);
	return 0;
}

static int s5p_mfc_set_enc_params_mpeg4(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	struct s5p_mfc_enc_params *p = &ctx->enc_params;
	struct s5p_mfc_mpeg4_enc_params *p_mpeg4 = &p->codec.mpeg4;
	unsigned int reg;
	unsigned int shm;
	unsigned int framerate;

	s5p_mfc_set_enc_params(ctx);
	/* pictype : number of B */
	reg = mfc_read(dev, S5P_FIMV_ENC_PIC_TYPE_CTRL);
	/* num_b_frame - 0 ~ 2 */
	reg &= ~(0x3 << 16);
	reg |= (p->num_b_frame << 16);
	mfc_write(dev, reg, S5P_FIMV_ENC_PIC_TYPE_CTRL);
	/* profile & level */
	reg = mfc_read(dev, S5P_FIMV_ENC_PROFILE);
	/* level */
	reg &= ~(0xFF << 8);
	reg |= (p_mpeg4->level << 8);
	/* profile - 0 ~ 2 */
	reg &= ~(0x3F);
	reg |= p_mpeg4->profile;
	mfc_write(dev, reg, S5P_FIMV_ENC_PROFILE);
	/* quarter_pixel */
	mfc_write(dev, p_mpeg4->quarter_pixel, S5P_FIMV_ENC_MPEG4_QUART_PXL);
	/* qp */
	if (!p->rc_frame) {
		shm = s5p_mfc_read_shm(ctx, P_B_FRAME_QP);
		shm &= ~(0xFFF);
		shm |= ((p_mpeg4->rc_b_frame_qp & 0x3F) << 6);
		shm |= (p_mpeg4->rc_p_frame_qp & 0x3F);
		s5p_mfc_write_shm(ctx, shm, P_B_FRAME_QP);
	}
	/* frame rate */
	if (p->rc_frame) {
		if (p->rc_framerate_denom > 0) {
			framerate = p->rc_framerate_num * 1000 /
						p->rc_framerate_denom;
			mfc_write(dev, framerate,
				S5P_FIMV_ENC_RC_FRAME_RATE);
			shm = s5p_mfc_read_shm(ctx, RC_VOP_TIMING);
			shm &= ~(0xFFFFFFFF);
			shm |= (1 << 31);
			shm |= ((p->rc_framerate_num & 0x7FFF) << 16);
			shm |= (p->rc_framerate_denom & 0xFFFF);
			s5p_mfc_write_shm(ctx, shm, RC_VOP_TIMING);
		}
	} else {
		mfc_write(dev, 0, S5P_FIMV_ENC_RC_FRAME_RATE);
	}
	/* rate control config. */
	reg = mfc_read(dev, S5P_FIMV_ENC_RC_CONFIG);
	/* frame QP */
	reg &= ~(0x3F);
	reg |= p_mpeg4->rc_frame_qp;
	mfc_write(dev, reg, S5P_FIMV_ENC_RC_CONFIG);
	/* max & min value of QP */
	reg = mfc_read(dev, S5P_FIMV_ENC_RC_QBOUND);
	/* max QP */
	reg &= ~(0x3F << 8);
	reg |= (p_mpeg4->rc_max_qp << 8);
	/* min QP */
	reg &= ~(0x3F);
	reg |= p_mpeg4->rc_min_qp;
	mfc_write(dev, reg, S5P_FIMV_ENC_RC_QBOUND);
	/* extended encoder ctrl */
	shm = s5p_mfc_read_shm(ctx, EXT_ENC_CONTROL);
	/* vbv buffer size */
	if (p->frame_skip_mode ==
			V4L2_MPEG_MFC51_VIDEO_FRAME_SKIP_MODE_BUF_LIMIT) {
		shm &= ~(0xFFFF << 16);
		shm |= (p->vbv_size << 16);
	}
	s5p_mfc_write_shm(ctx, shm, EXT_ENC_CONTROL);
	return 0;
}

static int s5p_mfc_set_enc_params_h263(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	struct s5p_mfc_enc_params *p = &ctx->enc_params;
	struct s5p_mfc_mpeg4_enc_params *p_h263 = &p->codec.mpeg4;
	unsigned int reg;
	unsigned int shm;

	s5p_mfc_set_enc_params(ctx);
	/* qp */
	if (!p->rc_frame) {
		shm = s5p_mfc_read_shm(ctx, P_B_FRAME_QP);
		shm &= ~(0xFFF);
		shm |= (p_h263->rc_p_frame_qp & 0x3F);
		s5p_mfc_write_shm(ctx, shm, P_B_FRAME_QP);
	}
	/* frame rate */
	if (p->rc_frame && p->rc_framerate_denom)
		mfc_write(dev, p->rc_framerate_num * 1000
			/ p->rc_framerate_denom, S5P_FIMV_ENC_RC_FRAME_RATE);
	else
		mfc_write(dev, 0, S5P_FIMV_ENC_RC_FRAME_RATE);
	/* rate control config. */
	reg = mfc_read(dev, S5P_FIMV_ENC_RC_CONFIG);
	/* frame QP */
	reg &= ~(0x3F);
	reg |= p_h263->rc_frame_qp;
	mfc_write(dev, reg, S5P_FIMV_ENC_RC_CONFIG);
	/* max & min value of QP */
	reg = mfc_read(dev, S5P_FIMV_ENC_RC_QBOUND);
	/* max QP */
	reg &= ~(0x3F << 8);
	reg |= (p_h263->rc_max_qp << 8);
	/* min QP */
	reg &= ~(0x3F);
	reg |= p_h263->rc_min_qp;
	mfc_write(dev, reg, S5P_FIMV_ENC_RC_QBOUND);
	/* extended encoder ctrl */
	shm = s5p_mfc_read_shm(ctx, EXT_ENC_CONTROL);
	/* vbv buffer size */
	if (p->frame_skip_mode ==
			V4L2_MPEG_MFC51_VIDEO_FRAME_SKIP_MODE_BUF_LIMIT) {
		shm &= ~(0xFFFF << 16);
		shm |= (p->vbv_size << 16);
	}
	s5p_mfc_write_shm(ctx, shm, EXT_ENC_CONTROL);
	return 0;
}

/* Initialize decoding */
int s5p_mfc_init_decode(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	s5p_mfc_set_shared_buffer(ctx);
	/* Setup loop filter, for decoding this is only valid for MPEG4 */
	if (ctx->codec_mode == S5P_FIMV_CODEC_MPEG4_DEC)
		mfc_write(dev, ctx->loop_filter_mpeg4, S5P_FIMV_ENC_LF_CTRL);
	else
		mfc_write(dev, 0, S5P_FIMV_ENC_LF_CTRL);
	mfc_write(dev, ((ctx->slice_interface & S5P_FIMV_SLICE_INT_MASK) <<
		S5P_FIMV_SLICE_INT_SHIFT) | (ctx->display_delay_enable <<
		S5P_FIMV_DDELAY_ENA_SHIFT) | ((ctx->display_delay &
		S5P_FIMV_DDELAY_VAL_MASK) << S5P_FIMV_DDELAY_VAL_SHIFT),
		S5P_FIMV_SI_CH0_DPB_CONF_CTRL);
	mfc_write(dev,
	((S5P_FIMV_CH_SEQ_HEADER & S5P_FIMV_CH_MASK) << S5P_FIMV_CH_SHIFT)
				| (ctx->inst_no), S5P_FIMV_SI_CH0_INST_ID);
	return 0;
}

static void s5p_mfc_set_flush(struct s5p_mfc_ctx *ctx, int flush)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned int dpb;

	if (flush)
		dpb = mfc_read(dev, S5P_FIMV_SI_CH0_DPB_CONF_CTRL) | (
			S5P_FIMV_DPB_FLUSH_MASK << S5P_FIMV_DPB_FLUSH_SHIFT);
	else
		dpb = mfc_read(dev, S5P_FIMV_SI_CH0_DPB_CONF_CTRL) &
			~(S5P_FIMV_DPB_FLUSH_MASK << S5P_FIMV_DPB_FLUSH_SHIFT);
	mfc_write(dev, dpb, S5P_FIMV_SI_CH0_DPB_CONF_CTRL);
}

/* Decode a single frame */
int s5p_mfc_decode_one_frame(struct s5p_mfc_ctx *ctx,
					enum s5p_mfc_decode_arg last_frame)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	mfc_write(dev, ctx->dec_dst_flag, S5P_FIMV_SI_CH0_RELEASE_BUF);
	s5p_mfc_set_shared_buffer(ctx);
	s5p_mfc_set_flush(ctx, ctx->dpb_flush_flag);
	/* Issue different commands to instance basing on whether it
	 * is the last frame or not. */
	switch (last_frame) {
	case MFC_DEC_FRAME:
		mfc_write(dev, ((S5P_FIMV_CH_FRAME_START & S5P_FIMV_CH_MASK) <<
		S5P_FIMV_CH_SHIFT) | (ctx->inst_no), S5P_FIMV_SI_CH0_INST_ID);
		break;
	case MFC_DEC_LAST_FRAME:
		mfc_write(dev, ((S5P_FIMV_CH_LAST_FRAME & S5P_FIMV_CH_MASK) <<
		S5P_FIMV_CH_SHIFT) | (ctx->inst_no), S5P_FIMV_SI_CH0_INST_ID);
		break;
	case MFC_DEC_RES_CHANGE:
		mfc_write(dev, ((S5P_FIMV_CH_FRAME_START_REALLOC &
		S5P_FIMV_CH_MASK) << S5P_FIMV_CH_SHIFT) | (ctx->inst_no),
		S5P_FIMV_SI_CH0_INST_ID);
		break;
	}
	mfc_debug(2, "Decoding a usual frame\n");
	return 0;
}

int s5p_mfc_init_encode(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	if (ctx->codec_mode == S5P_FIMV_CODEC_H264_ENC)
		s5p_mfc_set_enc_params_h264(ctx);
	else if (ctx->codec_mode == S5P_FIMV_CODEC_MPEG4_ENC)
		s5p_mfc_set_enc_params_mpeg4(ctx);
	else if (ctx->codec_mode == S5P_FIMV_CODEC_H263_ENC)
		s5p_mfc_set_enc_params_h263(ctx);
	else {
		mfc_err("Unknown codec for encoding (%x)\n",
			ctx->codec_mode);
		return -EINVAL;
	}
	s5p_mfc_set_shared_buffer(ctx);
	mfc_write(dev, ((S5P_FIMV_CH_SEQ_HEADER << 16) & 0x70000) |
		(ctx->inst_no), S5P_FIMV_SI_CH0_INST_ID);
	return 0;
}

/* Encode a single frame */
int s5p_mfc_encode_one_frame(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	/* memory structure cur. frame */
	if (ctx->src_fmt->fourcc == V4L2_PIX_FMT_NV12M)
		mfc_write(dev, 0, S5P_FIMV_ENC_MAP_FOR_CUR);
	else if (ctx->src_fmt->fourcc == V4L2_PIX_FMT_NV12MT)
		mfc_write(dev, 3, S5P_FIMV_ENC_MAP_FOR_CUR);
	s5p_mfc_set_shared_buffer(ctx);
	mfc_write(dev, (S5P_FIMV_CH_FRAME_START << 16 & 0x70000) |
		(ctx->inst_no), S5P_FIMV_SI_CH0_INST_ID);
	return 0;
}

static int s5p_mfc_get_new_ctx(struct s5p_mfc_dev *dev)
{
	unsigned long flags;
	int new_ctx;
	int cnt;

	spin_lock_irqsave(&dev->condlock, flags);
	new_ctx = (dev->curr_ctx + 1) % MFC_NUM_CONTEXTS;
	cnt = 0;
	while (!test_bit(new_ctx, &dev->ctx_work_bits)) {
		new_ctx = (new_ctx + 1) % MFC_NUM_CONTEXTS;
		if (++cnt > MFC_NUM_CONTEXTS) {
			/* No contexts to run */
			spin_unlock_irqrestore(&dev->condlock, flags);
			return -EAGAIN;
		}
	}
	spin_unlock_irqrestore(&dev->condlock, flags);
	return new_ctx;
}

static void s5p_mfc_run_res_change(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	s5p_mfc_set_dec_stream_buffer(ctx, 0, 0, 0);
	dev->curr_ctx = ctx->num;
	s5p_mfc_clean_ctx_int_flags(ctx);
	s5p_mfc_decode_one_frame(ctx, MFC_DEC_RES_CHANGE);
}

static int s5p_mfc_run_dec_frame(struct s5p_mfc_ctx *ctx, int last_frame)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	struct s5p_mfc_buf *temp_vb;
	unsigned long flags;
	unsigned int index;

	spin_lock_irqsave(&dev->irqlock, flags);
	/* Frames are being decoded */
	if (list_empty(&ctx->src_queue)) {
		mfc_debug(2, "No src buffers\n");
		spin_unlock_irqrestore(&dev->irqlock, flags);
		return -EAGAIN;
	}
	/* Get the next source buffer */
	temp_vb = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
	temp_vb->used = 1;
	s5p_mfc_set_dec_stream_buffer(ctx,
		vb2_dma_contig_plane_dma_addr(temp_vb->b, 0), ctx->consumed_stream,
					temp_vb->b->v4l2_planes[0].bytesused);
	spin_unlock_irqrestore(&dev->irqlock, flags);
	index = temp_vb->b->v4l2_buf.index;
	dev->curr_ctx = ctx->num;
	s5p_mfc_clean_ctx_int_flags(ctx);
	if (temp_vb->b->v4l2_planes[0].bytesused == 0) {
		last_frame = MFC_DEC_LAST_FRAME;
		mfc_debug(2, "Setting ctx->state to FINISHING\n");
		ctx->state = MFCINST_FINISHING;
	}
	s5p_mfc_decode_one_frame(ctx, last_frame);
	return 0;
}

static int s5p_mfc_run_enc_frame(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned long flags;
	struct s5p_mfc_buf *dst_mb;
	struct s5p_mfc_buf *src_mb;
	unsigned long src_y_addr, src_c_addr, dst_addr;
	unsigned int dst_size;

	spin_lock_irqsave(&dev->irqlock, flags);
	if (list_empty(&ctx->src_queue)) {
		mfc_debug(2, "no src buffers\n");
		spin_unlock_irqrestore(&dev->irqlock, flags);
		return -EAGAIN;
	}
	if (list_empty(&ctx->dst_queue)) {
		mfc_debug(2, "no dst buffers\n");
		spin_unlock_irqrestore(&dev->irqlock, flags);
		return -EAGAIN;
	}
	src_mb = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
	src_mb->used = 1;
	src_y_addr = vb2_dma_contig_plane_dma_addr(src_mb->b, 0);
	src_c_addr = vb2_dma_contig_plane_dma_addr(src_mb->b, 1);
	s5p_mfc_set_enc_frame_buffer(ctx, src_y_addr, src_c_addr);
	dst_mb = list_entry(ctx->dst_queue.next, struct s5p_mfc_buf, list);
	dst_mb->used = 1;
	dst_addr = vb2_dma_contig_plane_dma_addr(dst_mb->b, 0);
	dst_size = vb2_plane_size(dst_mb->b, 0);
	s5p_mfc_set_enc_stream_buffer(ctx, dst_addr, dst_size);
	spin_unlock_irqrestore(&dev->irqlock, flags);
	dev->curr_ctx = ctx->num;
	s5p_mfc_clean_ctx_int_flags(ctx);
	s5p_mfc_encode_one_frame(ctx);
	return 0;
}

static void s5p_mfc_run_init_dec(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned long flags;
	struct s5p_mfc_buf *temp_vb;

	/* Initializing decoding - parsing header */
	spin_lock_irqsave(&dev->irqlock, flags);
	mfc_debug(2, "Preparing to init decoding\n");
	temp_vb = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
	s5p_mfc_set_dec_desc_buffer(ctx);
	mfc_debug(2, "Header size: %d\n", temp_vb->b->v4l2_planes[0].bytesused);
	s5p_mfc_set_dec_stream_buffer(ctx,
				vb2_dma_contig_plane_dma_addr(temp_vb->b, 0),
				0, temp_vb->b->v4l2_planes[0].bytesused);
	spin_unlock_irqrestore(&dev->irqlock, flags);
	dev->curr_ctx = ctx->num;
	s5p_mfc_clean_ctx_int_flags(ctx);
	s5p_mfc_init_decode(ctx);
}

static void s5p_mfc_run_init_enc(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned long flags;
	struct s5p_mfc_buf *dst_mb;
	unsigned long dst_addr;
	unsigned int dst_size;

	s5p_mfc_set_enc_ref_buffer(ctx);
	spin_lock_irqsave(&dev->irqlock, flags);
	dst_mb = list_entry(ctx->dst_queue.next, struct s5p_mfc_buf, list);
	dst_addr = vb2_dma_contig_plane_dma_addr(dst_mb->b, 0);
	dst_size = vb2_plane_size(dst_mb->b, 0);
	s5p_mfc_set_enc_stream_buffer(ctx, dst_addr, dst_size);
	spin_unlock_irqrestore(&dev->irqlock, flags);
	dev->curr_ctx = ctx->num;
	s5p_mfc_clean_ctx_int_flags(ctx);
	s5p_mfc_init_encode(ctx);
}

static int s5p_mfc_run_init_dec_buffers(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned long flags;
	struct s5p_mfc_buf *temp_vb;
	int ret;

	/*
	 * Header was parsed now starting processing
	 * First set the output frame buffers
	 */
	if (ctx->capture_state != QUEUE_BUFS_MMAPED) {
		mfc_err("It seems that not all destionation buffers were "
			"mmaped\nMFC requires that all destination are mmaped "
			"before starting processing\n");
		return -EAGAIN;
	}
	spin_lock_irqsave(&dev->irqlock, flags);
	if (list_empty(&ctx->src_queue)) {
		mfc_err("Header has been deallocated in the middle of"
			" initialization\n");
		spin_unlock_irqrestore(&dev->irqlock, flags);
		return -EIO;
	}
	temp_vb = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
	mfc_debug(2, "Header size: %d\n", temp_vb->b->v4l2_planes[0].bytesused);
	s5p_mfc_set_dec_stream_buffer(ctx,
				vb2_dma_contig_plane_dma_addr(temp_vb->b, 0),
				0, temp_vb->b->v4l2_planes[0].bytesused);
	spin_unlock_irqrestore(&dev->irqlock, flags);
	dev->curr_ctx = ctx->num;
	s5p_mfc_clean_ctx_int_flags(ctx);
	ret = s5p_mfc_set_dec_frame_buffer(ctx);
	if (ret) {
		mfc_err("Failed to alloc frame mem\n");
		ctx->state = MFCINST_ERROR;
	}
	return ret;
}

/* Try running an operation on hardware */
void s5p_mfc_try_run(struct s5p_mfc_dev *dev)
{
	struct s5p_mfc_ctx *ctx;
	int new_ctx;
	unsigned int ret = 0;

	if (test_bit(0, &dev->enter_suspend)) {
		mfc_debug(1, "Entering suspend so do not schedule any jobs\n");
		return;
	}
	/* Check whether hardware is not running */
	if (test_and_set_bit(0, &dev->hw_lock) != 0) {
		/* This is perfectly ok, the scheduled ctx should wait */
		mfc_debug(1, "Couldn't lock HW\n");
		return;
	}
	/* Choose the context to run */
	new_ctx = s5p_mfc_get_new_ctx(dev);
	if (new_ctx < 0) {
		/* No contexts to run */
		if (test_and_clear_bit(0, &dev->hw_lock) == 0) {
			mfc_err("Failed to unlock hardware\n");
			return;
		}
		mfc_debug(1, "No ctx is scheduled to be run\n");
		return;
	}
	ctx = dev->ctx[new_ctx];
	/* Got context to run in ctx */
	/*
	 * Last frame has already been sent to MFC.
	 * Now obtaining frames from MFC buffer
	 */
	s5p_mfc_clock_on();
	if (ctx->type == MFCINST_DECODER) {
		s5p_mfc_set_dec_desc_buffer(ctx);
		switch (ctx->state) {
		case MFCINST_FINISHING:
			s5p_mfc_run_dec_frame(ctx, MFC_DEC_LAST_FRAME);
			break;
		case MFCINST_RUNNING:
			ret = s5p_mfc_run_dec_frame(ctx, MFC_DEC_FRAME);
			break;
		case MFCINST_INIT:
			s5p_mfc_clean_ctx_int_flags(ctx);
			ret = s5p_mfc_open_inst_cmd(ctx);
			break;
		case MFCINST_RETURN_INST:
			s5p_mfc_clean_ctx_int_flags(ctx);
			ret = s5p_mfc_close_inst_cmd(ctx);
			break;
		case MFCINST_GOT_INST:
			s5p_mfc_run_init_dec(ctx);
			break;
		case MFCINST_HEAD_PARSED:
			ret = s5p_mfc_run_init_dec_buffers(ctx);
			mfc_debug(1, "head parsed\n");
			break;
		case MFCINST_RES_CHANGE_INIT:
			s5p_mfc_run_res_change(ctx);
			break;
		case MFCINST_RES_CHANGE_FLUSH:
			s5p_mfc_run_dec_frame(ctx, MFC_DEC_FRAME);
			break;
		case MFCINST_RES_CHANGE_END:
			mfc_debug(2, "Finished remaining frames after resolution change\n");
			ctx->capture_state = QUEUE_FREE;
			mfc_debug(2, "Will re-init the codec\n");
			s5p_mfc_run_init_dec(ctx);
			break;
		default:
			ret = -EAGAIN;
		}
	} else if (ctx->type == MFCINST_ENCODER) {
		switch (ctx->state) {
		case MFCINST_FINISHING:
		case MFCINST_RUNNING:
			ret = s5p_mfc_run_enc_frame(ctx);
			break;
		case MFCINST_INIT:
			s5p_mfc_clean_ctx_int_flags(ctx);
			ret = s5p_mfc_open_inst_cmd(ctx);
			break;
		case MFCINST_RETURN_INST:
			s5p_mfc_clean_ctx_int_flags(ctx);
			ret = s5p_mfc_close_inst_cmd(ctx);
			break;
		case MFCINST_GOT_INST:
			s5p_mfc_run_init_enc(ctx);
			break;
		default:
			ret = -EAGAIN;
		}
	} else {
		mfc_err("Invalid context type: %d\n", ctx->type);
		ret = -EAGAIN;
	}

	if (ret) {
		/* Free hardware lock */
		if (test_and_clear_bit(0, &dev->hw_lock) == 0)
			mfc_err("Failed to unlock hardware\n");

		/* This is in deed imporant, as no operation has been
		 * scheduled, reduce the clock count as no one will
		 * ever do this, because no interrupt related to this try_run
		 * will ever come from hardware. */
		s5p_mfc_clock_off();
	}
}


void s5p_mfc_cleanup_queue(struct list_head *lh, struct vb2_queue *vq)
{
	struct s5p_mfc_buf *b;
	int i;

	while (!list_empty(lh)) {
		b = list_entry(lh->next, struct s5p_mfc_buf, list);
		for (i = 0; i < b->b->num_planes; i++)
			vb2_set_plane_payload(b->b, i, 0);
		vb2_buffer_done(b->b, VB2_BUF_STATE_ERROR);
		list_del(&b->list);
	}
}