linux/drivers/staging/media/meson/vdec/codec_mpeg12.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2018 BayLibre, SAS
 * Author: Maxime Jourdan <[email protected]>
 */

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

#include "codec_mpeg12.h"
#include "dos_regs.h"
#include "vdec_helpers.h"

#define SIZE_WORKSPACE …
/* Offset substracted by the firmware from the workspace paddr */
#define WORKSPACE_OFFSET …

/* map firmware registers to known MPEG1/2 functions */
#define MREG_SEQ_INFO …
	#define MPEG2_SEQ_DAR_MASK …
	#define MPEG2_DAR_4_3 …
	#define MPEG2_DAR_16_9 …
	#define MPEG2_DAR_221_100 …
#define MREG_PIC_INFO …
#define MREG_PIC_WIDTH …
#define MREG_PIC_HEIGHT …
#define MREG_BUFFERIN …
#define MREG_BUFFEROUT …
#define MREG_CMD …
#define MREG_CO_MV_START …
#define MREG_ERROR_COUNT …
#define MREG_FRAME_OFFSET …
#define MREG_WAIT_BUFFER …
#define MREG_FATAL_ERROR …

#define PICINFO_PROG …
#define PICINFO_TOP_FIRST …

struct codec_mpeg12 { … };

static const u8 eos_sequence[SZ_1K] = …;

static const u8 *codec_mpeg12_eos_sequence(u32 *len)
{ … }

static int codec_mpeg12_can_recycle(struct amvdec_core *core)
{ … }

static void codec_mpeg12_recycle(struct amvdec_core *core, u32 buf_idx)
{ … }

static int codec_mpeg12_start(struct amvdec_session *sess)
{ … }

static int codec_mpeg12_stop(struct amvdec_session *sess)
{ … }

static void codec_mpeg12_update_dar(struct amvdec_session *sess)
{ … }

static irqreturn_t codec_mpeg12_threaded_isr(struct amvdec_session *sess)
{ … }

static irqreturn_t codec_mpeg12_isr(struct amvdec_session *sess)
{ … }

struct amvdec_codec_ops codec_mpeg12_ops = …;