drivers/staging/media/meson/vdec/codec_hevc_common.c - linux/kernel/git/torvalds/linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2018 Maxime Jourdan <mjourdan@baylibre.com>
  */

 #include <media/v4l2-mem2mem.h>
 #include <media/videobuf2-dma-contig.h>

 #include "codec_hevc_common.h"
 #include "vdec_helpers.h"
 #include "hevc_regs.h"

 #define MMU_COMPRESS_HEADER_SIZE 0x48000
 #define MMU_MAP_SIZE 0x4800

 const u16 vdec_hevc_parser_cmd[] = {
 	0x0401,	0x8401,	0x0800,	0x0402,
 	0x9002,	0x1423,	0x8CC3,	0x1423,
 	0x8804,	0x9825,	0x0800,	0x04FE,
 	0x8406,	0x8411,	0x1800,	0x8408,
 	0x8409,	0x8C2A,	0x9C2B,	0x1C00,
 	0x840F,	0x8407,	0x8000,	0x8408,
 	0x2000,	0xA800,	0x8410,	0x04DE,
 	0x840C,	0x840D,	0xAC00,	0xA000,
 	0x08C0,	0x08E0,	0xA40E,	0xFC00,
 	0x7C00
 };

 /* Configure decode head read mode */
 void codec_hevc_setup_decode_head(struct amvdec_session *sess, int is_10bit)
 {
 	struct amvdec_core *core = sess->core;
 	u32 body_size = amvdec_am21c_body_size(sess->width, sess->height);
 	u32 head_size = amvdec_am21c_head_size(sess->width, sess->height);

 	if (!codec_hevc_use_fbc(sess->pixfmt_cap, is_10bit)) {
 		/* Enable 2-plane reference read mode */
 		amvdec_write_dos(core, HEVCD_MPP_DECOMP_CTL1, BIT(31));
 		return;
 	}

 	if (codec_hevc_use_mmu(core->platform->revision,
 			       sess->pixfmt_cap, is_10bit))
 		amvdec_write_dos(core, HEVCD_MPP_DECOMP_CTL1, BIT(4));
 	else
 		amvdec_write_dos(core, HEVCD_MPP_DECOMP_CTL1, 0);

 	if (core->platform->revision < VDEC_REVISION_SM1)
 		amvdec_write_dos(core, HEVCD_MPP_DECOMP_CTL2, body_size / 32);
 	amvdec_write_dos(core, HEVC_CM_BODY_LENGTH, body_size);
 	amvdec_write_dos(core, HEVC_CM_HEADER_OFFSET, body_size);
 	amvdec_write_dos(core, HEVC_CM_HEADER_LENGTH, head_size);
 }
 EXPORT_SYMBOL_GPL(codec_hevc_setup_decode_head);

 static void codec_hevc_setup_buffers_gxbb(struct amvdec_session *sess,
 					  struct codec_hevc_common *comm,
 					  int is_10bit)
 {
 	struct amvdec_core *core = sess->core;
 	struct v4l2_m2m_buffer *buf;
 	u32 buf_num = v4l2_m2m_num_dst_bufs_ready(sess->m2m_ctx);
 	dma_addr_t buf_y_paddr = 0;
 	dma_addr_t buf_uv_paddr = 0;
 	u32 idx = 0;
 	u32 val;
 	int i;

 	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CONF_ADDR, 0);

 	v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
 		struct vb2_buffer *vb = &buf->vb.vb2_buf;

 		idx = vb->index;

 		if (codec_hevc_use_downsample(sess->pixfmt_cap, is_10bit))
 			buf_y_paddr = comm->fbc_buffer_paddr[idx];
 		else
 			buf_y_paddr = vb2_dma_contig_plane_dma_addr(vb, 0);

 		if (codec_hevc_use_fbc(sess->pixfmt_cap, is_10bit)) {
 			val = buf_y_paddr | (idx << 8) | 1;
 			amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CMD_ADDR,
 					 val);
 		} else {
 			buf_uv_paddr = vb2_dma_contig_plane_dma_addr(vb, 1);
 			val = buf_y_paddr | ((idx * 2) << 8) | 1;
 			amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CMD_ADDR,
 					 val);
 			val = buf_uv_paddr | ((idx * 2 + 1) << 8) | 1;
 			amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CMD_ADDR,
 					 val);
 		}
 	}

 	if (codec_hevc_use_fbc(sess->pixfmt_cap, is_10bit))
 		val = buf_y_paddr | (idx << 8) | 1;
 	else
 		val = buf_y_paddr | ((idx * 2) << 8) | 1;

 	/* Fill the remaining unused slots with the last buffer's Y addr */
 	for (i = buf_num; i < MAX_REF_PIC_NUM; ++i)
 		amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CMD_ADDR, val);

 	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CONF_ADDR, 1);
 	amvdec_write_dos(core, HEVCD_MPP_ANC_CANVAS_ACCCONFIG_ADDR, 1);
 	for (i = 0; i < 32; ++i)
 		amvdec_write_dos(core, HEVCD_MPP_ANC_CANVAS_DATA_ADDR, 0);
 }

 static void codec_hevc_setup_buffers_gxl(struct amvdec_session *sess,
 					 struct codec_hevc_common *comm,
 					 int is_10bit)
 {
 	struct amvdec_core *core = sess->core;
 	struct v4l2_m2m_buffer *buf;
 	u32 revision = core->platform->revision;
 	u32 pixfmt_cap = sess->pixfmt_cap;
 	int i;

 	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CONF_ADDR,
 			 BIT(2) | BIT(1));

 	v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
 		struct vb2_buffer *vb = &buf->vb.vb2_buf;
 		dma_addr_t buf_y_paddr = 0;
 		dma_addr_t buf_uv_paddr = 0;
 		u32 idx = vb->index;

 		if (codec_hevc_use_mmu(revision, pixfmt_cap, is_10bit))
 			buf_y_paddr = comm->mmu_header_paddr[idx];
 		else if (codec_hevc_use_downsample(pixfmt_cap, is_10bit))
 			buf_y_paddr = comm->fbc_buffer_paddr[idx];
 		else
 			buf_y_paddr = vb2_dma_contig_plane_dma_addr(vb, 0);

 		amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_DATA,
 				 buf_y_paddr >> 5);

 		if (!codec_hevc_use_fbc(pixfmt_cap, is_10bit)) {
 			buf_uv_paddr = vb2_dma_contig_plane_dma_addr(vb, 1);
 			amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_DATA,
 					 buf_uv_paddr >> 5);
 		}
 	}

 	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CONF_ADDR, 1);
 	amvdec_write_dos(core, HEVCD_MPP_ANC_CANVAS_ACCCONFIG_ADDR, 1);
 	for (i = 0; i < 32; ++i)
 		amvdec_write_dos(core, HEVCD_MPP_ANC_CANVAS_DATA_ADDR, 0);
 }

 void codec_hevc_free_fbc_buffers(struct amvdec_session *sess,
 				 struct codec_hevc_common *comm)
 {
 	struct device *dev = sess->core->dev;
 	u32 am21_size = amvdec_am21c_size(sess->width, sess->height);
 	int i;

 	for (i = 0; i < MAX_REF_PIC_NUM; ++i) {
 		if (comm->fbc_buffer_vaddr[i]) {
 			dma_free_coherent(dev, am21_size,
 					  comm->fbc_buffer_vaddr[i],
 					  comm->fbc_buffer_paddr[i]);
 			comm->fbc_buffer_vaddr[i] = NULL;
 		}
 	}
 }
 EXPORT_SYMBOL_GPL(codec_hevc_free_fbc_buffers);

 static int codec_hevc_alloc_fbc_buffers(struct amvdec_session *sess,
 					struct codec_hevc_common *comm)
 {
 	struct device *dev = sess->core->dev;
 	struct v4l2_m2m_buffer *buf;
 	u32 am21_size = amvdec_am21c_size(sess->width, sess->height);

 	v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
 		u32 idx = buf->vb.vb2_buf.index;
 		dma_addr_t paddr;
 		void *vaddr = dma_alloc_coherent(dev, am21_size, &paddr,
 						 GFP_KERNEL);
 		if (!vaddr) {
 			codec_hevc_free_fbc_buffers(sess, comm);
 			return -ENOMEM;
 		}

 		comm->fbc_buffer_vaddr[idx] = vaddr;
 		comm->fbc_buffer_paddr[idx] = paddr;
 	}

 	return 0;
 }

 void codec_hevc_free_mmu_headers(struct amvdec_session *sess,
 				 struct codec_hevc_common *comm)
 {
 	struct device *dev = sess->core->dev;
 	int i;

 	for (i = 0; i < MAX_REF_PIC_NUM; ++i) {
 		if (comm->mmu_header_vaddr[i]) {
 			dma_free_coherent(dev, MMU_COMPRESS_HEADER_SIZE,
 					  comm->mmu_header_vaddr[i],
 					  comm->mmu_header_paddr[i]);
 			comm->mmu_header_vaddr[i] = NULL;
 		}
 	}

 	if (comm->mmu_map_vaddr) {
 		dma_free_coherent(dev, MMU_MAP_SIZE,
 				  comm->mmu_map_vaddr,
 				  comm->mmu_map_paddr);
 		comm->mmu_map_vaddr = NULL;
 	}
 }
 EXPORT_SYMBOL_GPL(codec_hevc_free_mmu_headers);

 static int codec_hevc_alloc_mmu_headers(struct amvdec_session *sess,
 					struct codec_hevc_common *comm)
 {
 	struct device *dev = sess->core->dev;
 	struct v4l2_m2m_buffer *buf;

 	comm->mmu_map_vaddr = dma_alloc_coherent(dev, MMU_MAP_SIZE,
 						 &comm->mmu_map_paddr,
 						 GFP_KERNEL);
 	if (!comm->mmu_map_vaddr)
 		return -ENOMEM;

 	v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
 		u32 idx = buf->vb.vb2_buf.index;
 		dma_addr_t paddr;
 		void *vaddr = dma_alloc_coherent(dev, MMU_COMPRESS_HEADER_SIZE,
 						 &paddr, GFP_KERNEL);
 		if (!vaddr) {
 			codec_hevc_free_mmu_headers(sess, comm);
 			return -ENOMEM;
 		}

 		comm->mmu_header_vaddr[idx] = vaddr;
 		comm->mmu_header_paddr[idx] = paddr;
 	}

 	return 0;
 }

 int codec_hevc_setup_buffers(struct amvdec_session *sess,
 			     struct codec_hevc_common *comm,
 			     int is_10bit)
 {
 	struct amvdec_core *core = sess->core;
 	int ret;

 	if (codec_hevc_use_downsample(sess->pixfmt_cap, is_10bit)) {
 		ret = codec_hevc_alloc_fbc_buffers(sess, comm);
 		if (ret)
 			return ret;
 	}

 	if (codec_hevc_use_mmu(core->platform->revision,
 			       sess->pixfmt_cap, is_10bit)) {
 		ret = codec_hevc_alloc_mmu_headers(sess, comm);
 		if (ret) {
 			codec_hevc_free_fbc_buffers(sess, comm);
 			return ret;
 		}
 	}

 	if (core->platform->revision == VDEC_REVISION_GXBB)
 		codec_hevc_setup_buffers_gxbb(sess, comm, is_10bit);
 	else
 		codec_hevc_setup_buffers_gxl(sess, comm, is_10bit);

 	return 0;
 }
 EXPORT_SYMBOL_GPL(codec_hevc_setup_buffers);

 void codec_hevc_fill_mmu_map(struct amvdec_session *sess,
 			     struct codec_hevc_common *comm,
 			     struct vb2_buffer *vb)
 {
 	u32 size = amvdec_am21c_size(sess->width, sess->height);
 	u32 nb_pages = size / PAGE_SIZE;
 	u32 *mmu_map = comm->mmu_map_vaddr;
 	u32 first_page;
 	u32 i;

 	if (sess->pixfmt_cap == V4L2_PIX_FMT_NV12M)
 		first_page = comm->fbc_buffer_paddr[vb->index] >> PAGE_SHIFT;
 	else
 		first_page = vb2_dma_contig_plane_dma_addr(vb, 0) >> PAGE_SHIFT;

 	for (i = 0; i < nb_pages; ++i)
 		mmu_map[i] = first_page + i;
 }
 EXPORT_SYMBOL_GPL(codec_hevc_fill_mmu_map);
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2018 Maxime Jourdan <mjourdan@baylibre.com>
	*/

	#include <media/v4l2-mem2mem.h>
	#include <media/videobuf2-dma-contig.h>

	#include "codec_hevc_common.h"
	#include "vdec_helpers.h"
	#include "hevc_regs.h"

	#define MMU_COMPRESS_HEADER_SIZE 0x48000
	#define MMU_MAP_SIZE 0x4800

	const u16 vdec_hevc_parser_cmd[] = {
	0x0401, 0x8401, 0x0800, 0x0402,
	0x9002, 0x1423, 0x8CC3, 0x1423,
	0x8804, 0x9825, 0x0800, 0x04FE,
	0x8406, 0x8411, 0x1800, 0x8408,
	0x8409, 0x8C2A, 0x9C2B, 0x1C00,
	0x840F, 0x8407, 0x8000, 0x8408,
	0x2000, 0xA800, 0x8410, 0x04DE,
	0x840C, 0x840D, 0xAC00, 0xA000,
	0x08C0, 0x08E0, 0xA40E, 0xFC00,
	0x7C00
	};

	/* Configure decode head read mode */
	void codec_hevc_setup_decode_head(struct amvdec_session *sess, int is_10bit)
	{
	struct amvdec_core *core = sess->core;
	u32 body_size = amvdec_am21c_body_size(sess->width, sess->height);
	u32 head_size = amvdec_am21c_head_size(sess->width, sess->height);

	if (!codec_hevc_use_fbc(sess->pixfmt_cap, is_10bit)) {
	/* Enable 2-plane reference read mode */
	amvdec_write_dos(core, HEVCD_MPP_DECOMP_CTL1, BIT(31));
	return;
	}

	if (codec_hevc_use_mmu(core->platform->revision,
	sess->pixfmt_cap, is_10bit))
	amvdec_write_dos(core, HEVCD_MPP_DECOMP_CTL1, BIT(4));
	else
	amvdec_write_dos(core, HEVCD_MPP_DECOMP_CTL1, 0);

	if (core->platform->revision < VDEC_REVISION_SM1)
	amvdec_write_dos(core, HEVCD_MPP_DECOMP_CTL2, body_size / 32);
	amvdec_write_dos(core, HEVC_CM_BODY_LENGTH, body_size);
	amvdec_write_dos(core, HEVC_CM_HEADER_OFFSET, body_size);
	amvdec_write_dos(core, HEVC_CM_HEADER_LENGTH, head_size);
	}
	EXPORT_SYMBOL_GPL(codec_hevc_setup_decode_head);

	static void codec_hevc_setup_buffers_gxbb(struct amvdec_session *sess,
	struct codec_hevc_common *comm,
	int is_10bit)
	{
	struct amvdec_core *core = sess->core;
	struct v4l2_m2m_buffer *buf;
	u32 buf_num = v4l2_m2m_num_dst_bufs_ready(sess->m2m_ctx);
	dma_addr_t buf_y_paddr = 0;
	dma_addr_t buf_uv_paddr = 0;
	u32 idx = 0;
	u32 val;
	int i;

	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CONF_ADDR, 0);

	v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
	struct vb2_buffer *vb = &buf->vb.vb2_buf;

	idx = vb->index;

	if (codec_hevc_use_downsample(sess->pixfmt_cap, is_10bit))
	buf_y_paddr = comm->fbc_buffer_paddr[idx];
	else
	buf_y_paddr = vb2_dma_contig_plane_dma_addr(vb, 0);

	if (codec_hevc_use_fbc(sess->pixfmt_cap, is_10bit)) {
	val = buf_y_paddr \| (idx << 8) \| 1;
	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CMD_ADDR,
	val);
	} else {
	buf_uv_paddr = vb2_dma_contig_plane_dma_addr(vb, 1);
	val = buf_y_paddr \| ((idx * 2) << 8) \| 1;
	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CMD_ADDR,
	val);
	val = buf_uv_paddr \| ((idx * 2 + 1) << 8) \| 1;
	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CMD_ADDR,
	val);
	}
	}

	if (codec_hevc_use_fbc(sess->pixfmt_cap, is_10bit))
	val = buf_y_paddr \| (idx << 8) \| 1;
	else
	val = buf_y_paddr \| ((idx * 2) << 8) \| 1;

	/* Fill the remaining unused slots with the last buffer's Y addr */
	for (i = buf_num; i < MAX_REF_PIC_NUM; ++i)
	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CMD_ADDR, val);

	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CONF_ADDR, 1);
	amvdec_write_dos(core, HEVCD_MPP_ANC_CANVAS_ACCCONFIG_ADDR, 1);
	for (i = 0; i < 32; ++i)
	amvdec_write_dos(core, HEVCD_MPP_ANC_CANVAS_DATA_ADDR, 0);
	}

	static void codec_hevc_setup_buffers_gxl(struct amvdec_session *sess,
	struct codec_hevc_common *comm,
	int is_10bit)
	{
	struct amvdec_core *core = sess->core;
	struct v4l2_m2m_buffer *buf;
	u32 revision = core->platform->revision;
	u32 pixfmt_cap = sess->pixfmt_cap;
	int i;

	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CONF_ADDR,
	BIT(2) \| BIT(1));

	v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
	struct vb2_buffer *vb = &buf->vb.vb2_buf;
	dma_addr_t buf_y_paddr = 0;
	dma_addr_t buf_uv_paddr = 0;
	u32 idx = vb->index;

	if (codec_hevc_use_mmu(revision, pixfmt_cap, is_10bit))
	buf_y_paddr = comm->mmu_header_paddr[idx];
	else if (codec_hevc_use_downsample(pixfmt_cap, is_10bit))
	buf_y_paddr = comm->fbc_buffer_paddr[idx];
	else
	buf_y_paddr = vb2_dma_contig_plane_dma_addr(vb, 0);

	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_DATA,
	buf_y_paddr >> 5);

	if (!codec_hevc_use_fbc(pixfmt_cap, is_10bit)) {
	buf_uv_paddr = vb2_dma_contig_plane_dma_addr(vb, 1);
	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_DATA,
	buf_uv_paddr >> 5);
	}
	}

	amvdec_write_dos(core, HEVCD_MPP_ANC2AXI_TBL_CONF_ADDR, 1);
	amvdec_write_dos(core, HEVCD_MPP_ANC_CANVAS_ACCCONFIG_ADDR, 1);
	for (i = 0; i < 32; ++i)
	amvdec_write_dos(core, HEVCD_MPP_ANC_CANVAS_DATA_ADDR, 0);
	}

	void codec_hevc_free_fbc_buffers(struct amvdec_session *sess,
	struct codec_hevc_common *comm)
	{
	struct device *dev = sess->core->dev;
	u32 am21_size = amvdec_am21c_size(sess->width, sess->height);
	int i;

	for (i = 0; i < MAX_REF_PIC_NUM; ++i) {
	if (comm->fbc_buffer_vaddr[i]) {
	dma_free_coherent(dev, am21_size,
	comm->fbc_buffer_vaddr[i],
	comm->fbc_buffer_paddr[i]);
	comm->fbc_buffer_vaddr[i] = NULL;
	}
	}
	}
	EXPORT_SYMBOL_GPL(codec_hevc_free_fbc_buffers);

	static int codec_hevc_alloc_fbc_buffers(struct amvdec_session *sess,
	struct codec_hevc_common *comm)
	{
	struct device *dev = sess->core->dev;
	struct v4l2_m2m_buffer *buf;
	u32 am21_size = amvdec_am21c_size(sess->width, sess->height);

	v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
	u32 idx = buf->vb.vb2_buf.index;
	dma_addr_t paddr;
	void *vaddr = dma_alloc_coherent(dev, am21_size, &paddr,
	GFP_KERNEL);
	if (!vaddr) {
	codec_hevc_free_fbc_buffers(sess, comm);
	return -ENOMEM;
	}

	comm->fbc_buffer_vaddr[idx] = vaddr;
	comm->fbc_buffer_paddr[idx] = paddr;
	}

	return 0;
	}

	void codec_hevc_free_mmu_headers(struct amvdec_session *sess,
	struct codec_hevc_common *comm)
	{
	struct device *dev = sess->core->dev;
	int i;

	for (i = 0; i < MAX_REF_PIC_NUM; ++i) {
	if (comm->mmu_header_vaddr[i]) {
	dma_free_coherent(dev, MMU_COMPRESS_HEADER_SIZE,
	comm->mmu_header_vaddr[i],
	comm->mmu_header_paddr[i]);
	comm->mmu_header_vaddr[i] = NULL;
	}
	}

	if (comm->mmu_map_vaddr) {
	dma_free_coherent(dev, MMU_MAP_SIZE,
	comm->mmu_map_vaddr,
	comm->mmu_map_paddr);
	comm->mmu_map_vaddr = NULL;
	}
	}
	EXPORT_SYMBOL_GPL(codec_hevc_free_mmu_headers);

	static int codec_hevc_alloc_mmu_headers(struct amvdec_session *sess,
	struct codec_hevc_common *comm)
	{
	struct device *dev = sess->core->dev;
	struct v4l2_m2m_buffer *buf;

	comm->mmu_map_vaddr = dma_alloc_coherent(dev, MMU_MAP_SIZE,
	&comm->mmu_map_paddr,
	GFP_KERNEL);
	if (!comm->mmu_map_vaddr)
	return -ENOMEM;

	v4l2_m2m_for_each_dst_buf(sess->m2m_ctx, buf) {
	u32 idx = buf->vb.vb2_buf.index;
	dma_addr_t paddr;
	void *vaddr = dma_alloc_coherent(dev, MMU_COMPRESS_HEADER_SIZE,
	&paddr, GFP_KERNEL);
	if (!vaddr) {
	codec_hevc_free_mmu_headers(sess, comm);
	return -ENOMEM;
	}

	comm->mmu_header_vaddr[idx] = vaddr;
	comm->mmu_header_paddr[idx] = paddr;
	}

	return 0;
	}

	int codec_hevc_setup_buffers(struct amvdec_session *sess,
	struct codec_hevc_common *comm,
	int is_10bit)
	{
	struct amvdec_core *core = sess->core;
	int ret;

	if (codec_hevc_use_downsample(sess->pixfmt_cap, is_10bit)) {
	ret = codec_hevc_alloc_fbc_buffers(sess, comm);
	if (ret)
	return ret;
	}

	if (codec_hevc_use_mmu(core->platform->revision,
	sess->pixfmt_cap, is_10bit)) {
	ret = codec_hevc_alloc_mmu_headers(sess, comm);
	if (ret) {
	codec_hevc_free_fbc_buffers(sess, comm);
	return ret;
	}
	}

	if (core->platform->revision == VDEC_REVISION_GXBB)
	codec_hevc_setup_buffers_gxbb(sess, comm, is_10bit);
	else
	codec_hevc_setup_buffers_gxl(sess, comm, is_10bit);

	return 0;
	}
	EXPORT_SYMBOL_GPL(codec_hevc_setup_buffers);

	void codec_hevc_fill_mmu_map(struct amvdec_session *sess,
	struct codec_hevc_common *comm,
	struct vb2_buffer *vb)
	{
	u32 size = amvdec_am21c_size(sess->width, sess->height);
	u32 nb_pages = size / PAGE_SIZE;
	u32 *mmu_map = comm->mmu_map_vaddr;
	u32 first_page;
	u32 i;

	if (sess->pixfmt_cap == V4L2_PIX_FMT_NV12M)
	first_page = comm->fbc_buffer_paddr[vb->index] >> PAGE_SHIFT;
	else
	first_page = vb2_dma_contig_plane_dma_addr(vb, 0) >> PAGE_SHIFT;

	for (i = 0; i < nb_pages; ++i)
	mmu_map[i] = first_page + i;
	}
	EXPORT_SYMBOL_GPL(codec_hevc_fill_mmu_map);