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|
// SPDX-License-Identifier: GPL-2.0-only
/*
* A virtual codec example device.
*
* Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* This is a virtual codec device driver for testing the codec framework.
* It simulates a device that uses memory buffers for both source and
* destination and encodes or decodes the data.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/videobuf2-vmalloc.h>
#include "codec-v4l2-fwht.h"
MODULE_DESCRIPTION("Virtual codec device");
MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>");
MODULE_LICENSE("GPL v2");
static bool multiplanar;
module_param(multiplanar, bool, 0444);
MODULE_PARM_DESC(multiplanar,
" use multi-planar API instead of single-planar API");
static unsigned int debug;
module_param(debug, uint, 0644);
MODULE_PARM_DESC(debug, " activates debug info");
#define VICODEC_NAME "vicodec"
#define MAX_WIDTH 4096U
#define MIN_WIDTH 640U
#define MAX_HEIGHT 2160U
#define MIN_HEIGHT 360U
#define dprintk(dev, fmt, arg...) \
v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
struct pixfmt_info {
u32 id;
unsigned int bytesperline_mult;
unsigned int sizeimage_mult;
unsigned int sizeimage_div;
unsigned int luma_step;
unsigned int chroma_step;
/* Chroma plane subsampling */
unsigned int width_div;
unsigned int height_div;
};
static const struct v4l2_fwht_pixfmt_info pixfmt_fwht = {
V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1, 0
};
static void vicodec_dev_release(struct device *dev)
{
}
static struct platform_device vicodec_pdev = {
.name = VICODEC_NAME,
.dev.release = vicodec_dev_release,
};
/* Per-queue, driver-specific private data */
struct vicodec_q_data {
unsigned int width;
unsigned int height;
unsigned int sizeimage;
unsigned int sequence;
const struct v4l2_fwht_pixfmt_info *info;
};
enum {
V4L2_M2M_SRC = 0,
V4L2_M2M_DST = 1,
};
struct vicodec_dev {
struct v4l2_device v4l2_dev;
struct video_device enc_vfd;
struct video_device dec_vfd;
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device mdev;
#endif
struct mutex enc_mutex;
struct mutex dec_mutex;
spinlock_t enc_lock;
spinlock_t dec_lock;
struct v4l2_m2m_dev *enc_dev;
struct v4l2_m2m_dev *dec_dev;
};
struct vicodec_ctx {
struct v4l2_fh fh;
struct vicodec_dev *dev;
bool is_enc;
spinlock_t *lock;
struct v4l2_ctrl_handler hdl;
struct vb2_v4l2_buffer *last_src_buf;
struct vb2_v4l2_buffer *last_dst_buf;
/* Source and destination queue data */
struct vicodec_q_data q_data[2];
struct v4l2_fwht_state state;
u32 cur_buf_offset;
u32 comp_max_size;
u32 comp_size;
u32 comp_magic_cnt;
u32 comp_frame_size;
bool comp_has_frame;
bool comp_has_next_frame;
};
static inline struct vicodec_ctx *file2ctx(struct file *file)
{
return container_of(file->private_data, struct vicodec_ctx, fh);
}
static struct vicodec_q_data *get_q_data(struct vicodec_ctx *ctx,
enum v4l2_buf_type type)
{
switch (type) {
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
return &ctx->q_data[V4L2_M2M_SRC];
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
return &ctx->q_data[V4L2_M2M_DST];
default:
WARN_ON(1);
break;
}
return NULL;
}
static int device_process(struct vicodec_ctx *ctx,
struct vb2_v4l2_buffer *src_vb,
struct vb2_v4l2_buffer *dst_vb)
{
struct vicodec_dev *dev = ctx->dev;
struct vicodec_q_data *q_dst;
struct v4l2_fwht_state *state = &ctx->state;
u8 *p_src, *p_dst;
int ret;
q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (ctx->is_enc)
p_src = vb2_plane_vaddr(&src_vb->vb2_buf, 0);
else
p_src = state->compressed_frame;
p_dst = vb2_plane_vaddr(&dst_vb->vb2_buf, 0);
if (!p_src || !p_dst) {
v4l2_err(&dev->v4l2_dev,
"Acquiring kernel pointers to buffers failed\n");
return -EFAULT;
}
if (ctx->is_enc) {
struct vicodec_q_data *q_src;
q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
state->info = q_src->info;
ret = v4l2_fwht_encode(state, p_src, p_dst);
if (ret < 0)
return ret;
vb2_set_plane_payload(&dst_vb->vb2_buf, 0, ret);
} else {
state->info = q_dst->info;
ret = v4l2_fwht_decode(state, p_src, p_dst);
if (ret < 0)
return ret;
vb2_set_plane_payload(&dst_vb->vb2_buf, 0, q_dst->sizeimage);
}
dst_vb->sequence = q_dst->sequence++;
dst_vb->flags &= ~V4L2_BUF_FLAG_LAST;
v4l2_m2m_buf_copy_data(src_vb, dst_vb, !ctx->is_enc);
return 0;
}
/*
* mem2mem callbacks
*/
/* device_run() - prepares and starts the device */
static void device_run(void *priv)
{
static const struct v4l2_event eos_event = {
.type = V4L2_EVENT_EOS
};
struct vicodec_ctx *ctx = priv;
struct vicodec_dev *dev = ctx->dev;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
struct vicodec_q_data *q_src;
u32 state;
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
state = VB2_BUF_STATE_DONE;
if (device_process(ctx, src_buf, dst_buf))
state = VB2_BUF_STATE_ERROR;
ctx->last_dst_buf = dst_buf;
spin_lock(ctx->lock);
if (!ctx->comp_has_next_frame && src_buf == ctx->last_src_buf) {
dst_buf->flags |= V4L2_BUF_FLAG_LAST;
v4l2_event_queue_fh(&ctx->fh, &eos_event);
}
if (ctx->is_enc) {
src_buf->sequence = q_src->sequence++;
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_buf_done(src_buf, state);
} else if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == ctx->cur_buf_offset) {
src_buf->sequence = q_src->sequence++;
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_buf_done(src_buf, state);
ctx->cur_buf_offset = 0;
ctx->comp_has_next_frame = false;
}
v4l2_m2m_buf_done(dst_buf, state);
ctx->comp_size = 0;
ctx->comp_magic_cnt = 0;
ctx->comp_has_frame = false;
spin_unlock(ctx->lock);
if (ctx->is_enc)
v4l2_m2m_job_finish(dev->enc_dev, ctx->fh.m2m_ctx);
else
v4l2_m2m_job_finish(dev->dec_dev, ctx->fh.m2m_ctx);
}
static void job_remove_src_buf(struct vicodec_ctx *ctx, u32 state)
{
struct vb2_v4l2_buffer *src_buf;
struct vicodec_q_data *q_src;
q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
spin_lock(ctx->lock);
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
src_buf->sequence = q_src->sequence++;
v4l2_m2m_buf_done(src_buf, state);
ctx->cur_buf_offset = 0;
spin_unlock(ctx->lock);
}
static int job_ready(void *priv)
{
static const u8 magic[] = {
0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff
};
struct vicodec_ctx *ctx = priv;
struct vb2_v4l2_buffer *src_buf;
u8 *p_src;
u8 *p;
u32 sz;
u32 state;
if (ctx->is_enc || ctx->comp_has_frame)
return 1;
restart:
ctx->comp_has_next_frame = false;
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
if (!src_buf)
return 0;
p_src = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
sz = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
p = p_src + ctx->cur_buf_offset;
state = VB2_BUF_STATE_DONE;
if (!ctx->comp_size) {
state = VB2_BUF_STATE_ERROR;
for (; p < p_src + sz; p++) {
u32 copy;
p = memchr(p, magic[ctx->comp_magic_cnt],
p_src + sz - p);
if (!p) {
ctx->comp_magic_cnt = 0;
break;
}
copy = sizeof(magic) - ctx->comp_magic_cnt;
if (p_src + sz - p < copy)
copy = p_src + sz - p;
memcpy(ctx->state.compressed_frame + ctx->comp_magic_cnt,
p, copy);
ctx->comp_magic_cnt += copy;
if (!memcmp(ctx->state.compressed_frame, magic,
ctx->comp_magic_cnt)) {
p += copy;
state = VB2_BUF_STATE_DONE;
break;
}
ctx->comp_magic_cnt = 0;
}
if (ctx->comp_magic_cnt < sizeof(magic)) {
job_remove_src_buf(ctx, state);
goto restart;
}
ctx->comp_size = sizeof(magic);
}
if (ctx->comp_size < sizeof(struct fwht_cframe_hdr)) {
struct fwht_cframe_hdr *p_hdr =
(struct fwht_cframe_hdr *)ctx->state.compressed_frame;
u32 copy = sizeof(struct fwht_cframe_hdr) - ctx->comp_size;
if (copy > p_src + sz - p)
copy = p_src + sz - p;
memcpy(ctx->state.compressed_frame + ctx->comp_size,
p, copy);
p += copy;
ctx->comp_size += copy;
if (ctx->comp_size < sizeof(struct fwht_cframe_hdr)) {
job_remove_src_buf(ctx, state);
goto restart;
}
ctx->comp_frame_size = ntohl(p_hdr->size) + sizeof(*p_hdr);
if (ctx->comp_frame_size > ctx->comp_max_size)
ctx->comp_frame_size = ctx->comp_max_size;
}
if (ctx->comp_size < ctx->comp_frame_size) {
u32 copy = ctx->comp_frame_size - ctx->comp_size;
if (copy > p_src + sz - p)
copy = p_src + sz - p;
memcpy(ctx->state.compressed_frame + ctx->comp_size,
p, copy);
p += copy;
ctx->comp_size += copy;
if (ctx->comp_size < ctx->comp_frame_size) {
job_remove_src_buf(ctx, state);
goto restart;
}
}
ctx->cur_buf_offset = p - p_src;
ctx->comp_has_frame = true;
ctx->comp_has_next_frame = false;
if (sz - ctx->cur_buf_offset >= sizeof(struct fwht_cframe_hdr)) {
struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p;
u32 frame_size = ntohl(p_hdr->size);
u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr);
if (!memcmp(p, magic, sizeof(magic)))
ctx->comp_has_next_frame = remaining >= frame_size;
}
return 1;
}
/*
* video ioctls
*/
static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt)
{
const struct v4l2_fwht_pixfmt_info *info =
v4l2_fwht_find_pixfmt(fmt);
if (!info)
info = v4l2_fwht_get_pixfmt(0);
return info;
}
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
strncpy(cap->driver, VICODEC_NAME, sizeof(cap->driver) - 1);
strncpy(cap->card, VICODEC_NAME, sizeof(cap->card) - 1);
snprintf(cap->bus_info, sizeof(cap->bus_info),
"platform:%s", VICODEC_NAME);
return 0;
}
static int enum_fmt(struct v4l2_fmtdesc *f, bool is_enc, bool is_out)
{
bool is_uncomp = (is_enc && is_out) || (!is_enc && !is_out);
if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar)
return -EINVAL;
if (!V4L2_TYPE_IS_MULTIPLANAR(f->type) && multiplanar)
return -EINVAL;
if (is_uncomp) {
const struct v4l2_fwht_pixfmt_info *info =
v4l2_fwht_get_pixfmt(f->index);
if (!info)
return -EINVAL;
f->pixelformat = info->id;
} else {
if (f->index)
return -EINVAL;
f->pixelformat = V4L2_PIX_FMT_FWHT;
}
return 0;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
return enum_fmt(f, ctx->is_enc, false);
}
static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
return enum_fmt(f, ctx->is_enc, true);
}
static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
{
struct vb2_queue *vq;
struct vicodec_q_data *q_data;
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
const struct v4l2_fwht_pixfmt_info *info;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (!vq)
return -EINVAL;
q_data = get_q_data(ctx, f->type);
info = q_data->info;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
if (multiplanar)
return -EINVAL;
pix = &f->fmt.pix;
pix->width = q_data->width;
pix->height = q_data->height;
pix->field = V4L2_FIELD_NONE;
pix->pixelformat = info->id;
pix->bytesperline = q_data->width * info->bytesperline_mult;
pix->sizeimage = q_data->sizeimage;
pix->colorspace = ctx->state.colorspace;
pix->xfer_func = ctx->state.xfer_func;
pix->ycbcr_enc = ctx->state.ycbcr_enc;
pix->quantization = ctx->state.quantization;
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
if (!multiplanar)
return -EINVAL;
pix_mp = &f->fmt.pix_mp;
pix_mp->width = q_data->width;
pix_mp->height = q_data->height;
pix_mp->field = V4L2_FIELD_NONE;
pix_mp->pixelformat = info->id;
pix_mp->num_planes = 1;
pix_mp->plane_fmt[0].bytesperline =
q_data->width * info->bytesperline_mult;
pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage;
pix_mp->colorspace = ctx->state.colorspace;
pix_mp->xfer_func = ctx->state.xfer_func;
pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
pix_mp->quantization = ctx->state.quantization;
memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
memset(pix_mp->plane_fmt[0].reserved, 0,
sizeof(pix_mp->plane_fmt[0].reserved));
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_g_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
return vidioc_g_fmt(file2ctx(file), f);
}
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
return vidioc_g_fmt(file2ctx(file), f);
}
static int vidioc_try_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
{
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
struct v4l2_plane_pix_format *plane;
const struct v4l2_fwht_pixfmt_info *info = &pixfmt_fwht;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
pix = &f->fmt.pix;
if (pix->pixelformat != V4L2_PIX_FMT_FWHT)
info = find_fmt(pix->pixelformat);
pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH) & ~7;
pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT) & ~7;
pix->field = V4L2_FIELD_NONE;
pix->bytesperline =
pix->width * info->bytesperline_mult;
pix->sizeimage = pix->width * pix->height *
info->sizeimage_mult / info->sizeimage_div;
if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
pix->sizeimage += sizeof(struct fwht_cframe_hdr);
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
pix_mp = &f->fmt.pix_mp;
plane = pix_mp->plane_fmt;
if (pix_mp->pixelformat != V4L2_PIX_FMT_FWHT)
info = find_fmt(pix_mp->pixelformat);
pix_mp->num_planes = 1;
pix_mp->width = clamp(pix_mp->width, MIN_WIDTH, MAX_WIDTH) & ~7;
pix_mp->height =
clamp(pix_mp->height, MIN_HEIGHT, MAX_HEIGHT) & ~7;
pix_mp->field = V4L2_FIELD_NONE;
plane->bytesperline =
pix_mp->width * info->bytesperline_mult;
plane->sizeimage = pix_mp->width * pix_mp->height *
info->sizeimage_mult / info->sizeimage_div;
if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
plane->sizeimage += sizeof(struct fwht_cframe_hdr);
memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
memset(plane->reserved, 0, sizeof(plane->reserved));
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (multiplanar)
return -EINVAL;
pix = &f->fmt.pix;
pix->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
find_fmt(f->fmt.pix.pixelformat)->id;
pix->colorspace = ctx->state.colorspace;
pix->xfer_func = ctx->state.xfer_func;
pix->ycbcr_enc = ctx->state.ycbcr_enc;
pix->quantization = ctx->state.quantization;
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
if (!multiplanar)
return -EINVAL;
pix_mp = &f->fmt.pix_mp;
pix_mp->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
find_fmt(pix_mp->pixelformat)->id;
pix_mp->colorspace = ctx->state.colorspace;
pix_mp->xfer_func = ctx->state.xfer_func;
pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
pix_mp->quantization = ctx->state.quantization;
break;
default:
return -EINVAL;
}
return vidioc_try_fmt(ctx, f);
}
static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
if (multiplanar)
return -EINVAL;
pix = &f->fmt.pix;
pix->pixelformat = !ctx->is_enc ? V4L2_PIX_FMT_FWHT :
find_fmt(pix->pixelformat)->id;
if (!pix->colorspace)
pix->colorspace = V4L2_COLORSPACE_REC709;
break;
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
if (!multiplanar)
return -EINVAL;
pix_mp = &f->fmt.pix_mp;
pix_mp->pixelformat = !ctx->is_enc ? V4L2_PIX_FMT_FWHT :
find_fmt(pix_mp->pixelformat)->id;
if (!pix_mp->colorspace)
pix_mp->colorspace = V4L2_COLORSPACE_REC709;
break;
default:
return -EINVAL;
}
return vidioc_try_fmt(ctx, f);
}
static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
{
struct vicodec_q_data *q_data;
struct vb2_queue *vq;
bool fmt_changed = true;
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (!vq)
return -EINVAL;
q_data = get_q_data(ctx, f->type);
if (!q_data)
return -EINVAL;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
pix = &f->fmt.pix;
if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
fmt_changed =
q_data->info->id != pix->pixelformat ||
q_data->width != pix->width ||
q_data->height != pix->height;
if (vb2_is_busy(vq) && fmt_changed)
return -EBUSY;
if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
q_data->info = &pixfmt_fwht;
else
q_data->info = find_fmt(pix->pixelformat);
q_data->width = pix->width;
q_data->height = pix->height;
q_data->sizeimage = pix->sizeimage;
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
pix_mp = &f->fmt.pix_mp;
if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
fmt_changed =
q_data->info->id != pix_mp->pixelformat ||
q_data->width != pix_mp->width ||
q_data->height != pix_mp->height;
if (vb2_is_busy(vq) && fmt_changed)
return -EBUSY;
if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
q_data->info = &pixfmt_fwht;
else
q_data->info = find_fmt(pix_mp->pixelformat);
q_data->width = pix_mp->width;
q_data->height = pix_mp->height;
q_data->sizeimage = pix_mp->plane_fmt[0].sizeimage;
break;
default:
return -EINVAL;
}
dprintk(ctx->dev,
"Setting format for type %d, wxh: %dx%d, fourcc: %08x\n",
f->type, q_data->width, q_data->height, q_data->info->id);
return 0;
}
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
int ret;
ret = vidioc_try_fmt_vid_cap(file, priv, f);
if (ret)
return ret;
return vidioc_s_fmt(file2ctx(file), f);
}
static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
int ret;
ret = vidioc_try_fmt_vid_out(file, priv, f);
if (ret)
return ret;
ret = vidioc_s_fmt(file2ctx(file), f);
if (!ret) {
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
pix = &f->fmt.pix;
ctx->state.colorspace = pix->colorspace;
ctx->state.xfer_func = pix->xfer_func;
ctx->state.ycbcr_enc = pix->ycbcr_enc;
ctx->state.quantization = pix->quantization;
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
pix_mp = &f->fmt.pix_mp;
ctx->state.colorspace = pix_mp->colorspace;
ctx->state.xfer_func = pix_mp->xfer_func;
ctx->state.ycbcr_enc = pix_mp->ycbcr_enc;
ctx->state.quantization = pix_mp->quantization;
break;
default:
break;
}
}
return ret;
}
static void vicodec_mark_last_buf(struct vicodec_ctx *ctx)
{
static const struct v4l2_event eos_event = {
.type = V4L2_EVENT_EOS
};
spin_lock(ctx->lock);
ctx->last_src_buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
if (!ctx->last_src_buf && ctx->last_dst_buf) {
ctx->last_dst_buf->flags |= V4L2_BUF_FLAG_LAST;
v4l2_event_queue_fh(&ctx->fh, &eos_event);
}
spin_unlock(ctx->lock);
}
static int vicodec_try_encoder_cmd(struct file *file, void *fh,
struct v4l2_encoder_cmd *ec)
{
if (ec->cmd != V4L2_ENC_CMD_STOP)
return -EINVAL;
if (ec->flags & V4L2_ENC_CMD_STOP_AT_GOP_END)
return -EINVAL;
return 0;
}
static int vicodec_encoder_cmd(struct file *file, void *fh,
struct v4l2_encoder_cmd *ec)
{
struct vicodec_ctx *ctx = file2ctx(file);
int ret;
ret = vicodec_try_encoder_cmd(file, fh, ec);
if (ret < 0)
return ret;
vicodec_mark_last_buf(ctx);
return 0;
}
static int vicodec_try_decoder_cmd(struct file *file, void *fh,
struct v4l2_decoder_cmd *dc)
{
if (dc->cmd != V4L2_DEC_CMD_STOP)
return -EINVAL;
if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
return -EINVAL;
if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
return -EINVAL;
return 0;
}
static int vicodec_decoder_cmd(struct file *file, void *fh,
struct v4l2_decoder_cmd *dc)
{
struct vicodec_ctx *ctx = file2ctx(file);
int ret;
ret = vicodec_try_decoder_cmd(file, fh, dc);
if (ret < 0)
return ret;
vicodec_mark_last_buf(ctx);
return 0;
}
static int vicodec_enum_framesizes(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize)
{
switch (fsize->pixel_format) {
case V4L2_PIX_FMT_FWHT:
break;
default:
if (find_fmt(fsize->pixel_format)->id == fsize->pixel_format)
break;
return -EINVAL;
}
if (fsize->index)
return -EINVAL;
fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
fsize->stepwise.min_width = MIN_WIDTH;
fsize->stepwise.max_width = MAX_WIDTH;
fsize->stepwise.step_width = 8;
fsize->stepwise.min_height = MIN_HEIGHT;
fsize->stepwise.max_height = MAX_HEIGHT;
fsize->stepwise.step_height = 8;
return 0;
}
static int vicodec_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
switch (sub->type) {
case V4L2_EVENT_EOS:
return v4l2_event_subscribe(fh, sub, 0, NULL);
default:
return v4l2_ctrl_subscribe_event(fh, sub);
}
}
static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
.vidioc_enum_fmt_vid_cap_mplane = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_vid_cap,
.vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
.vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
.vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
.vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
.vidioc_enum_fmt_vid_out_mplane = vidioc_enum_fmt_vid_out,
.vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_vid_out,
.vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_vid_out,
.vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_vid_out,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
.vidioc_try_encoder_cmd = vicodec_try_encoder_cmd,
.vidioc_encoder_cmd = vicodec_encoder_cmd,
.vidioc_try_decoder_cmd = vicodec_try_decoder_cmd,
.vidioc_decoder_cmd = vicodec_decoder_cmd,
.vidioc_enum_framesizes = vicodec_enum_framesizes,
.vidioc_subscribe_event = vicodec_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
/*
* Queue operations
*/
static int vicodec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
unsigned int *nplanes, unsigned int sizes[],
struct device *alloc_devs[])
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(vq);
struct vicodec_q_data *q_data = get_q_data(ctx, vq->type);
unsigned int size = q_data->sizeimage;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
*nplanes = 1;
sizes[0] = size;
return 0;
}
static int vicodec_buf_prepare(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct vicodec_q_data *q_data;
dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type);
q_data = get_q_data(ctx, vb->vb2_queue->type);
if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
if (vbuf->field == V4L2_FIELD_ANY)
vbuf->field = V4L2_FIELD_NONE;
if (vbuf->field != V4L2_FIELD_NONE) {
dprintk(ctx->dev, "%s field isn't supported\n",
__func__);
return -EINVAL;
}
}
if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
dprintk(ctx->dev,
"%s data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0),
(long)q_data->sizeimage);
return -EINVAL;
}
return 0;
}
static void vicodec_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}
static void vicodec_return_bufs(struct vb2_queue *q, u32 state)
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
struct vb2_v4l2_buffer *vbuf;
for (;;) {
if (V4L2_TYPE_IS_OUTPUT(q->type))
vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
else
vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
if (vbuf == NULL)
return;
spin_lock(ctx->lock);
v4l2_m2m_buf_done(vbuf, state);
spin_unlock(ctx->lock);
}
}
static int vicodec_start_streaming(struct vb2_queue *q,
unsigned int count)
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
struct vicodec_q_data *q_data = get_q_data(ctx, q->type);
struct v4l2_fwht_state *state = &ctx->state;
unsigned int size = q_data->width * q_data->height;
const struct v4l2_fwht_pixfmt_info *info = q_data->info;
unsigned int chroma_div = info->width_div * info->height_div;
unsigned int total_planes_size;
/*
* we don't know ahead how many components are in the encoding type
* V4L2_PIX_FMT_FWHT, so we will allocate space for 4 planes.
*/
if (info->id == V4L2_PIX_FMT_FWHT || info->components_num == 4)
total_planes_size = 2 * size + 2 * (size / chroma_div);
else if (info->components_num == 3)
total_planes_size = size + 2 * (size / chroma_div);
else
total_planes_size = size;
q_data->sequence = 0;
if (!V4L2_TYPE_IS_OUTPUT(q->type)) {
if (!ctx->is_enc) {
state->width = q_data->width;
state->height = q_data->height;
}
return 0;
}
if (ctx->is_enc) {
state->width = q_data->width;
state->height = q_data->height;
}
state->ref_frame.width = state->ref_frame.height = 0;
state->ref_frame.luma = kvmalloc(total_planes_size, GFP_KERNEL);
ctx->comp_max_size = total_planes_size + sizeof(struct fwht_cframe_hdr);
state->compressed_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL);
if (!state->ref_frame.luma || !state->compressed_frame) {
kvfree(state->ref_frame.luma);
kvfree(state->compressed_frame);
vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
return -ENOMEM;
}
if (info->id == V4L2_PIX_FMT_FWHT || info->components_num >= 3) {
state->ref_frame.cb = state->ref_frame.luma + size;
state->ref_frame.cr = state->ref_frame.cb + size / chroma_div;
} else {
state->ref_frame.cb = NULL;
state->ref_frame.cr = NULL;
}
if (info->id == V4L2_PIX_FMT_FWHT || info->components_num == 4)
state->ref_frame.alpha =
state->ref_frame.cr + size / chroma_div;
else
state->ref_frame.alpha = NULL;
ctx->last_src_buf = NULL;
ctx->last_dst_buf = NULL;
state->gop_cnt = 0;
ctx->cur_buf_offset = 0;
ctx->comp_size = 0;
ctx->comp_magic_cnt = 0;
ctx->comp_has_frame = false;
return 0;
}
static void vicodec_stop_streaming(struct vb2_queue *q)
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
vicodec_return_bufs(q, VB2_BUF_STATE_ERROR);
if (!V4L2_TYPE_IS_OUTPUT(q->type))
return;
kvfree(ctx->state.ref_frame.luma);
kvfree(ctx->state.compressed_frame);
}
static const struct vb2_ops vicodec_qops = {
.queue_setup = vicodec_queue_setup,
.buf_prepare = vicodec_buf_prepare,
.buf_queue = vicodec_buf_queue,
.start_streaming = vicodec_start_streaming,
.stop_streaming = vicodec_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static int queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
struct vicodec_ctx *ctx = priv;
int ret;
src_vq->type = (multiplanar ?
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
V4L2_BUF_TYPE_VIDEO_OUTPUT);
src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
src_vq->drv_priv = ctx;
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
src_vq->ops = &vicodec_qops;
src_vq->mem_ops = &vb2_vmalloc_memops;
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
src_vq->lock = ctx->is_enc ? &ctx->dev->enc_mutex :
&ctx->dev->dec_mutex;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
dst_vq->type = (multiplanar ?
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
V4L2_BUF_TYPE_VIDEO_CAPTURE);
dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
dst_vq->drv_priv = ctx;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->ops = &vicodec_qops;
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = src_vq->lock;
return vb2_queue_init(dst_vq);
}
#define VICODEC_CID_CUSTOM_BASE (V4L2_CID_MPEG_BASE | 0xf000)
#define VICODEC_CID_I_FRAME_QP (VICODEC_CID_CUSTOM_BASE + 0)
#define VICODEC_CID_P_FRAME_QP (VICODEC_CID_CUSTOM_BASE + 1)
static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vicodec_ctx *ctx = container_of(ctrl->handler,
struct vicodec_ctx, hdl);
switch (ctrl->id) {
case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
ctx->state.gop_size = ctrl->val;
return 0;
case VICODEC_CID_I_FRAME_QP:
ctx->state.i_frame_qp = ctrl->val;
return 0;
case VICODEC_CID_P_FRAME_QP:
ctx->state.p_frame_qp = ctrl->val;
return 0;
}
return -EINVAL;
}
static const struct v4l2_ctrl_ops vicodec_ctrl_ops = {
.s_ctrl = vicodec_s_ctrl,
};
static const struct v4l2_ctrl_config vicodec_ctrl_i_frame = {
.ops = &vicodec_ctrl_ops,
.id = VICODEC_CID_I_FRAME_QP,
.name = "FWHT I-Frame QP Value",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 1,
.max = 31,
.def = 20,
.step = 1,
};
static const struct v4l2_ctrl_config vicodec_ctrl_p_frame = {
.ops = &vicodec_ctrl_ops,
.id = VICODEC_CID_P_FRAME_QP,
.name = "FWHT P-Frame QP Value",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 1,
.max = 31,
.def = 20,
.step = 1,
};
/*
* File operations
*/
static int vicodec_open(struct file *file)
{
struct video_device *vfd = video_devdata(file);
struct vicodec_dev *dev = video_drvdata(file);
struct vicodec_ctx *ctx = NULL;
struct v4l2_ctrl_handler *hdl;
unsigned int size;
int rc = 0;
if (mutex_lock_interruptible(vfd->lock))
return -ERESTARTSYS;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
rc = -ENOMEM;
goto open_unlock;
}
if (vfd == &dev->enc_vfd)
ctx->is_enc = true;
v4l2_fh_init(&ctx->fh, video_devdata(file));
file->private_data = &ctx->fh;
ctx->dev = dev;
hdl = &ctx->hdl;
v4l2_ctrl_handler_init(hdl, 4);
v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE,
1, 16, 1, 10);
v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_i_frame, NULL);
v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_p_frame, NULL);
if (hdl->error) {
rc = hdl->error;
v4l2_ctrl_handler_free(hdl);
kfree(ctx);
goto open_unlock;
}
ctx->fh.ctrl_handler = hdl;
v4l2_ctrl_handler_setup(hdl);
ctx->q_data[V4L2_M2M_SRC].info =
ctx->is_enc ? v4l2_fwht_get_pixfmt(0) : &pixfmt_fwht;
ctx->q_data[V4L2_M2M_SRC].width = 1280;
ctx->q_data[V4L2_M2M_SRC].height = 720;
size = 1280 * 720 * ctx->q_data[V4L2_M2M_SRC].info->sizeimage_mult /
ctx->q_data[V4L2_M2M_SRC].info->sizeimage_div;
if (ctx->is_enc)
ctx->q_data[V4L2_M2M_SRC].sizeimage = size;
else
ctx->q_data[V4L2_M2M_SRC].sizeimage =
size + sizeof(struct fwht_cframe_hdr);
ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
ctx->q_data[V4L2_M2M_DST].info =
ctx->is_enc ? &pixfmt_fwht : v4l2_fwht_get_pixfmt(0);
size = 1280 * 720 * ctx->q_data[V4L2_M2M_DST].info->sizeimage_mult /
ctx->q_data[V4L2_M2M_DST].info->sizeimage_div;
if (ctx->is_enc)
ctx->q_data[V4L2_M2M_DST].sizeimage =
size + sizeof(struct fwht_cframe_hdr);
else
ctx->q_data[V4L2_M2M_DST].sizeimage = size;
ctx->state.colorspace = V4L2_COLORSPACE_REC709;
if (ctx->is_enc) {
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->enc_dev, ctx,
&queue_init);
ctx->lock = &dev->enc_lock;
} else {
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->dec_dev, ctx,
&queue_init);
ctx->lock = &dev->dec_lock;
}
if (IS_ERR(ctx->fh.m2m_ctx)) {
rc = PTR_ERR(ctx->fh.m2m_ctx);
v4l2_ctrl_handler_free(hdl);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
goto open_unlock;
}
v4l2_fh_add(&ctx->fh);
open_unlock:
mutex_unlock(vfd->lock);
return rc;
}
static int vicodec_release(struct file *file)
{
struct video_device *vfd = video_devdata(file);
struct vicodec_ctx *ctx = file2ctx(file);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
v4l2_ctrl_handler_free(&ctx->hdl);
mutex_lock(vfd->lock);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
mutex_unlock(vfd->lock);
kfree(ctx);
return 0;
}
static const struct v4l2_file_operations vicodec_fops = {
.owner = THIS_MODULE,
.open = vicodec_open,
.release = vicodec_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static const struct video_device vicodec_videodev = {
.name = VICODEC_NAME,
.vfl_dir = VFL_DIR_M2M,
.fops = &vicodec_fops,
.ioctl_ops = &vicodec_ioctl_ops,
.minor = -1,
.release = video_device_release_empty,
};
static const struct v4l2_m2m_ops m2m_ops = {
.device_run = device_run,
.job_ready = job_ready,
};
static int vicodec_probe(struct platform_device *pdev)
{
struct vicodec_dev *dev;
struct video_device *vfd;
int ret;
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
spin_lock_init(&dev->enc_lock);
spin_lock_init(&dev->dec_lock);
ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
if (ret)
return ret;
#ifdef CONFIG_MEDIA_CONTROLLER
dev->mdev.dev = &pdev->dev;
strscpy(dev->mdev.model, "vicodec", sizeof(dev->mdev.model));
media_device_init(&dev->mdev);
dev->v4l2_dev.mdev = &dev->mdev;
#endif
mutex_init(&dev->enc_mutex);
mutex_init(&dev->dec_mutex);
platform_set_drvdata(pdev, dev);
dev->enc_dev = v4l2_m2m_init(&m2m_ops);
if (IS_ERR(dev->enc_dev)) {
v4l2_err(&dev->v4l2_dev, "Failed to init vicodec device\n");
ret = PTR_ERR(dev->enc_dev);
goto unreg_dev;
}
dev->dec_dev = v4l2_m2m_init(&m2m_ops);
if (IS_ERR(dev->dec_dev)) {
v4l2_err(&dev->v4l2_dev, "Failed to init vicodec device\n");
ret = PTR_ERR(dev->dec_dev);
goto err_enc_m2m;
}
dev->enc_vfd = vicodec_videodev;
vfd = &dev->enc_vfd;
vfd->lock = &dev->enc_mutex;
vfd->v4l2_dev = &dev->v4l2_dev;
strscpy(vfd->name, "vicodec-enc", sizeof(vfd->name));
vfd->device_caps = V4L2_CAP_STREAMING |
(multiplanar ? V4L2_CAP_VIDEO_M2M_MPLANE : V4L2_CAP_VIDEO_M2M);
v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
video_set_drvdata(vfd, dev);
ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
goto err_dec_m2m;
}
v4l2_info(&dev->v4l2_dev,
"Device registered as /dev/video%d\n", vfd->num);
dev->dec_vfd = vicodec_videodev;
vfd = &dev->dec_vfd;
vfd->lock = &dev->dec_mutex;
vfd->v4l2_dev = &dev->v4l2_dev;
vfd->device_caps = V4L2_CAP_STREAMING |
(multiplanar ? V4L2_CAP_VIDEO_M2M_MPLANE : V4L2_CAP_VIDEO_M2M);
strscpy(vfd->name, "vicodec-dec", sizeof(vfd->name));
v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
video_set_drvdata(vfd, dev);
ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
goto unreg_enc;
}
v4l2_info(&dev->v4l2_dev,
"Device registered as /dev/video%d\n", vfd->num);
#ifdef CONFIG_MEDIA_CONTROLLER
ret = v4l2_m2m_register_media_controller(dev->enc_dev,
&dev->enc_vfd, MEDIA_ENT_F_PROC_VIDEO_ENCODER);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller\n");
goto unreg_m2m;
}
ret = v4l2_m2m_register_media_controller(dev->dec_dev,
&dev->dec_vfd, MEDIA_ENT_F_PROC_VIDEO_DECODER);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller\n");
goto unreg_m2m_enc_mc;
}
ret = media_device_register(&dev->mdev);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n");
goto unreg_m2m_dec_mc;
}
#endif
return 0;
#ifdef CONFIG_MEDIA_CONTROLLER
unreg_m2m_dec_mc:
v4l2_m2m_unregister_media_controller(dev->dec_dev);
unreg_m2m_enc_mc:
v4l2_m2m_unregister_media_controller(dev->enc_dev);
unreg_m2m:
video_unregister_device(&dev->dec_vfd);
#endif
unreg_enc:
video_unregister_device(&dev->enc_vfd);
err_dec_m2m:
v4l2_m2m_release(dev->dec_dev);
err_enc_m2m:
v4l2_m2m_release(dev->enc_dev);
unreg_dev:
v4l2_device_unregister(&dev->v4l2_dev);
return ret;
}
static int vicodec_remove(struct platform_device *pdev)
{
struct vicodec_dev *dev = platform_get_drvdata(pdev);
v4l2_info(&dev->v4l2_dev, "Removing " VICODEC_NAME);
#ifdef CONFIG_MEDIA_CONTROLLER
media_device_unregister(&dev->mdev);
v4l2_m2m_unregister_media_controller(dev->enc_dev);
v4l2_m2m_unregister_media_controller(dev->dec_dev);
media_device_cleanup(&dev->mdev);
#endif
v4l2_m2m_release(dev->enc_dev);
v4l2_m2m_release(dev->dec_dev);
video_unregister_device(&dev->enc_vfd);
video_unregister_device(&dev->dec_vfd);
v4l2_device_unregister(&dev->v4l2_dev);
return 0;
}
static struct platform_driver vicodec_pdrv = {
.probe = vicodec_probe,
.remove = vicodec_remove,
.driver = {
.name = VICODEC_NAME,
},
};
static void __exit vicodec_exit(void)
{
platform_driver_unregister(&vicodec_pdrv);
platform_device_unregister(&vicodec_pdev);
}
static int __init vicodec_init(void)
{
int ret;
ret = platform_device_register(&vicodec_pdev);
if (ret)
return ret;
ret = platform_driver_register(&vicodec_pdrv);
if (ret)
platform_device_unregister(&vicodec_pdev);
return ret;
}
module_init(vicodec_init);
module_exit(vicodec_exit);
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