#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/bug.h>
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/list.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-contig.h>
#include "common.h"
#include "fimc-core.h"
#include "fimc-reg.h"
#include "media-dev.h"
static unsigned int get_m2m_fmt_flags(unsigned int stream_type)
{
if (stream_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
return FMT_FLAGS_M2M_IN;
else
return FMT_FLAGS_M2M_OUT;
}
void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state)
{
struct vb2_v4l2_buffer *src_vb, *dst_vb;
if (!ctx || !ctx->fh.m2m_ctx)
return;
src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
if (src_vb)
v4l2_m2m_buf_done(src_vb, vb_state);
if (dst_vb)
v4l2_m2m_buf_done(dst_vb, vb_state);
if (src_vb && dst_vb)
v4l2_m2m_job_finish(ctx->fimc_dev->m2m.m2m_dev,
ctx->fh.m2m_ctx);
}
static void fimc_m2m_shutdown(struct fimc_ctx *ctx)
{
struct fimc_dev *fimc = ctx->fimc_dev;
if (!fimc_m2m_pending(fimc))
return;
fimc_ctx_state_set(FIMC_CTX_SHUT, ctx);
wait_event_timeout(fimc->irq_queue,
!fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx),
FIMC_SHUTDOWN_TIMEOUT);
}
static int start_streaming(struct vb2_queue *q, unsigned int count)
{
struct fimc_ctx *ctx = q->drv_priv;
return pm_runtime_resume_and_get(&ctx->fimc_dev->pdev->dev);
}
static void stop_streaming(struct vb2_queue *q)
{
struct fimc_ctx *ctx = q->drv_priv;
fimc_m2m_shutdown(ctx);
fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
pm_runtime_put(&ctx->fimc_dev->pdev->dev);
}
static void fimc_device_run(void *priv)
{
struct vb2_v4l2_buffer *src_vb, *dst_vb;
struct fimc_ctx *ctx = priv;
struct fimc_frame *sf, *df;
struct fimc_dev *fimc;
unsigned long flags;
int ret;
if (WARN(!ctx, "Null context\n"))
return;
fimc = ctx->fimc_dev;
spin_lock_irqsave(&fimc->slock, flags);
set_bit(ST_M2M_PEND, &fimc->state);
sf = &ctx->s_frame;
df = &ctx->d_frame;
if (ctx->state & FIMC_PARAMS) {
fimc_prepare_dma_offset(ctx, sf);
fimc_prepare_dma_offset(ctx, df);
}
src_vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
ret = fimc_prepare_addr(ctx, &src_vb->vb2_buf, sf, &sf->addr);
if (ret)
goto dma_unlock;
dst_vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
ret = fimc_prepare_addr(ctx, &dst_vb->vb2_buf, df, &df->addr);
if (ret)
goto dma_unlock;
dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
dst_vb->flags |=
src_vb->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
if (fimc->m2m.ctx != ctx) {
ctx->state |= FIMC_PARAMS;
fimc->m2m.ctx = ctx;
}
if (ctx->state & FIMC_PARAMS) {
fimc_set_yuv_order(ctx);
fimc_hw_set_input_path(ctx);
fimc_hw_set_in_dma(ctx);
ret = fimc_set_scaler_info(ctx);
if (ret)
goto dma_unlock;
fimc_hw_set_prescaler(ctx);
fimc_hw_set_mainscaler(ctx);
fimc_hw_set_target_format(ctx);
fimc_hw_set_rotation(ctx);
fimc_hw_set_effect(ctx);
fimc_hw_set_out_dma(ctx);
if (fimc->drv_data->alpha_color)
fimc_hw_set_rgb_alpha(ctx);
fimc_hw_set_output_path(ctx);
}
fimc_hw_set_input_addr(fimc, &sf->addr);
fimc_hw_set_output_addr(fimc, &df->addr, -1);
fimc_activate_capture(ctx);
ctx->state &= (FIMC_CTX_M2M | FIMC_CTX_CAP);
fimc_hw_activate_input_dma(fimc, true);
dma_unlock:
spin_unlock_irqrestore(&fimc->slock, flags);
}
static void fimc_job_abort(void *priv)
{
fimc_m2m_shutdown(priv);
}
static int fimc_queue_setup(struct vb2_queue *vq,
unsigned int *num_buffers, unsigned int *num_planes,
unsigned int sizes[], struct device *alloc_devs[])
{
struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
const struct fimc_frame *f;
int i;
f = ctx_get_frame(ctx, vq->type);
if (IS_ERR(f))
return PTR_ERR(f);
if (!f->fmt)
return -EINVAL;
*num_planes = f->fmt->memplanes;
for (i = 0; i < f->fmt->memplanes; i++)
sizes[i] = f->payload[i];
return 0;
}
static int fimc_buf_prepare(struct vb2_buffer *vb)
{
struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
const struct fimc_frame *frame;
int i;
frame = ctx_get_frame(ctx, vb->vb2_queue->type);
if (IS_ERR(frame))
return PTR_ERR(frame);
for (i = 0; i < frame->fmt->memplanes; i++)
vb2_set_plane_payload(vb, i, frame->payload[i]);
return 0;
}
static void fimc_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}
static const struct vb2_ops fimc_qops = {
.queue_setup = fimc_queue_setup,
.buf_prepare = fimc_buf_prepare,
.buf_queue = fimc_buf_queue,
.stop_streaming = stop_streaming,
.start_streaming = start_streaming,
};
static int fimc_m2m_querycap(struct file *file, void *fh,
struct v4l2_capability *cap)
{
struct fimc_dev *fimc = video_drvdata(file);
__fimc_vidioc_querycap(&fimc->pdev->dev, cap);
return 0;
}
static int fimc_m2m_enum_fmt(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
const struct fimc_fmt *fmt;
fmt = fimc_find_format(NULL, NULL, get_m2m_fmt_flags(f->type),
f->index);
if (!fmt)
return -EINVAL;
f->pixelformat = fmt->fourcc;
return 0;
}
static int fimc_m2m_g_fmt_mplane(struct file *file, void *fh,
struct v4l2_format *f)
{
struct fimc_ctx *ctx = file_to_ctx(file);
const struct fimc_frame *frame = ctx_get_frame(ctx, f->type);
if (IS_ERR(frame))
return PTR_ERR(frame);
__fimc_get_format(frame, f);
return 0;
}
static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f)
{
struct fimc_dev *fimc = ctx->fimc_dev;
const struct fimc_variant *variant = fimc->variant;
struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
const struct fimc_fmt *fmt;
u32 max_w, mod_x, mod_y;
if (!IS_M2M(f->type))
return -EINVAL;
fmt = fimc_find_format(&pix->pixelformat, NULL,
get_m2m_fmt_flags(f->type), 0);
if (WARN(fmt == NULL, "Pixel format lookup failed"))
return -EINVAL;
if (pix->field == V4L2_FIELD_ANY)
pix->field = V4L2_FIELD_NONE;
else if (pix->field != V4L2_FIELD_NONE)
return -EINVAL;
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
max_w = variant->pix_limit->scaler_dis_w;
mod_x = ffs(variant->min_inp_pixsize) - 1;
} else {
max_w = variant->pix_limit->out_rot_dis_w;
mod_x = ffs(variant->min_out_pixsize) - 1;
}
if (tiled_fmt(fmt)) {
mod_x = 6;
mod_y = 5;
} else {
if (variant->min_vsize_align == 1)
mod_y = fimc_fmt_is_rgb(fmt->color) ? 0 : 1;
else
mod_y = ffs(variant->min_vsize_align) - 1;
}
v4l_bound_align_image(&pix->width, 16, max_w, mod_x,
&pix->height, 8, variant->pix_limit->scaler_dis_w, mod_y, 0);
fimc_adjust_mplane_format(fmt, pix->width, pix->height, &f->fmt.pix_mp);
return 0;
}
static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh,
struct v4l2_format *f)
{
struct fimc_ctx *ctx = file_to_ctx(file);
return fimc_try_fmt_mplane(ctx, f);
}
static void __set_frame_format(struct fimc_frame *frame,
const struct fimc_fmt *fmt,
const struct v4l2_pix_format_mplane *pixm)
{
int i;
for (i = 0; i < fmt->memplanes; i++) {
frame->bytesperline[i] = pixm->plane_fmt[i].bytesperline;
frame->payload[i] = pixm->plane_fmt[i].sizeimage;
}
frame->f_width = pixm->width;
frame->f_height = pixm->height;
frame->o_width = pixm->width;
frame->o_height = pixm->height;
frame->width = pixm->width;
frame->height = pixm->height;
frame->offs_h = 0;
frame->offs_v = 0;
frame->fmt = fmt;
}
static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh,
struct v4l2_format *f)
{
struct fimc_ctx *ctx = file_to_ctx(file);
struct fimc_dev *fimc = ctx->fimc_dev;
const struct fimc_fmt *fmt;
struct vb2_queue *vq;
struct fimc_frame *frame;
int ret;
ret = fimc_try_fmt_mplane(ctx, f);
if (ret)
return ret;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (vb2_is_busy(vq)) {
v4l2_err(&fimc->m2m.vfd, "queue (%d) busy\n", f->type);
return -EBUSY;
}
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
frame = &ctx->s_frame;
else
frame = &ctx->d_frame;
fmt = fimc_find_format(&f->fmt.pix_mp.pixelformat, NULL,
get_m2m_fmt_flags(f->type), 0);
if (!fmt)
return -EINVAL;
__set_frame_format(frame, fmt, &f->fmt.pix_mp);
fimc_alpha_ctrl_update(ctx);
return 0;
}
static int fimc_m2m_g_selection(struct file *file, void *fh,
struct v4l2_selection *s)
{
struct fimc_ctx *ctx = file_to_ctx(file);
const struct fimc_frame *frame;
frame = ctx_get_frame(ctx, s->type);
if (IS_ERR(frame))
return PTR_ERR(frame);
switch (s->target) {
case V4L2_SEL_TGT_CROP:
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
break;
case V4L2_SEL_TGT_COMPOSE:
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
break;
default:
return -EINVAL;
}
switch (s->target) {
case V4L2_SEL_TGT_CROP:
case V4L2_SEL_TGT_COMPOSE:
s->r.left = frame->offs_h;
s->r.top = frame->offs_v;
s->r.width = frame->width;
s->r.height = frame->height;
break;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
s->r.left = 0;
s->r.top = 0;
s->r.width = frame->o_width;
s->r.height = frame->o_height;
break;
default:
return -EINVAL;
}
return 0;
}
static int fimc_m2m_try_selection(struct fimc_ctx *ctx,
struct v4l2_selection *s)
{
struct fimc_dev *fimc = ctx->fimc_dev;
const struct fimc_frame *f;
u32 min_size, halign, depth = 0;
int i;
if (s->r.top < 0 || s->r.left < 0) {
v4l2_err(&fimc->m2m.vfd,
"doesn't support negative values for top & left\n");
return -EINVAL;
}
if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
f = &ctx->d_frame;
if (s->target != V4L2_SEL_TGT_COMPOSE)
return -EINVAL;
} else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
f = &ctx->s_frame;
if (s->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
} else {
return -EINVAL;
}
min_size = (f == &ctx->s_frame) ?
fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize;
if (fimc->variant->min_vsize_align == 1)
halign = fimc_fmt_is_rgb(f->fmt->color) ? 0 : 1;
else
halign = ffs(fimc->variant->min_vsize_align) - 1;
for (i = 0; i < f->fmt->memplanes; i++)
depth += f->fmt->depth[i];
v4l_bound_align_image(&s->r.width, min_size, f->o_width,
ffs(min_size) - 1,
&s->r.height, min_size, f->o_height,
halign, 64/(ALIGN(depth, 8)));
if (s->r.left + s->r.width > f->o_width)
s->r.left = f->o_width - s->r.width;
if (s->r.top + s->r.height > f->o_height)
s->r.top = f->o_height - s->r.height;
s->r.left = round_down(s->r.left, min_size);
s->r.top = round_down(s->r.top, fimc->variant->hor_offs_align);
dbg("l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d",
s->r.left, s->r.top, s->r.width, s->r.height,
f->f_width, f->f_height);
return 0;
}
static int fimc_m2m_s_selection(struct file *file, void *fh,
struct v4l2_selection *s)
{
struct fimc_ctx *ctx = file_to_ctx(file);
struct fimc_dev *fimc = ctx->fimc_dev;
struct fimc_frame *f;
int ret;
ret = fimc_m2m_try_selection(ctx, s);
if (ret)
return ret;
f = (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ?
&ctx->s_frame : &ctx->d_frame;
if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
ret = fimc_check_scaler_ratio(ctx, s->r.width,
s->r.height, ctx->d_frame.width,
ctx->d_frame.height, ctx->rotation);
} else {
ret = fimc_check_scaler_ratio(ctx, ctx->s_frame.width,
ctx->s_frame.height, s->r.width,
s->r.height, ctx->rotation);
}
if (ret) {
v4l2_err(&fimc->m2m.vfd, "Out of scaler range\n");
return -EINVAL;
}
f->offs_h = s->r.left;
f->offs_v = s->r.top;
f->width = s->r.width;
f->height = s->r.height;
fimc_ctx_state_set(FIMC_PARAMS, ctx);
return 0;
}
static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = {
.vidioc_querycap = fimc_m2m_querycap,
.vidioc_enum_fmt_vid_cap = fimc_m2m_enum_fmt,
.vidioc_enum_fmt_vid_out = fimc_m2m_enum_fmt,
.vidioc_g_fmt_vid_cap_mplane = fimc_m2m_g_fmt_mplane,
.vidioc_g_fmt_vid_out_mplane = fimc_m2m_g_fmt_mplane,
.vidioc_try_fmt_vid_cap_mplane = fimc_m2m_try_fmt_mplane,
.vidioc_try_fmt_vid_out_mplane = fimc_m2m_try_fmt_mplane,
.vidioc_s_fmt_vid_cap_mplane = fimc_m2m_s_fmt_mplane,
.vidioc_s_fmt_vid_out_mplane = fimc_m2m_s_fmt_mplane,
.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_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
.vidioc_g_selection = fimc_m2m_g_selection,
.vidioc_s_selection = fimc_m2m_s_selection,
};
static int queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
struct fimc_ctx *ctx = priv;
int ret;
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
src_vq->drv_priv = ctx;
src_vq->ops = &fimc_qops;
src_vq->mem_ops = &vb2_dma_contig_memops;
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
src_vq->lock = &ctx->fimc_dev->lock;
src_vq->dev = &ctx->fimc_dev->pdev->dev;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
dst_vq->drv_priv = ctx;
dst_vq->ops = &fimc_qops;
dst_vq->mem_ops = &vb2_dma_contig_memops;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->fimc_dev->lock;
dst_vq->dev = &ctx->fimc_dev->pdev->dev;
return vb2_queue_init(dst_vq);
}
static int fimc_m2m_set_default_format(struct fimc_ctx *ctx)
{
struct v4l2_pix_format_mplane pixm = {
.pixelformat = V4L2_PIX_FMT_RGB32,
.width = 800,
.height = 600,
.plane_fmt[0] = {
.bytesperline = 800 * 4,
.sizeimage = 800 * 4 * 600,
},
};
const struct fimc_fmt *fmt;
fmt = fimc_find_format(&pixm.pixelformat, NULL, FMT_FLAGS_M2M, 0);
if (!fmt)
return -EINVAL;
__set_frame_format(&ctx->s_frame, fmt, &pixm);
__set_frame_format(&ctx->d_frame, fmt, &pixm);
return 0;
}
static int fimc_m2m_open(struct file *file)
{
struct fimc_dev *fimc = video_drvdata(file);
struct fimc_ctx *ctx;
int ret = -EBUSY;
pr_debug("pid: %d, state: %#lx\n", task_pid_nr(current), fimc->state);
if (mutex_lock_interruptible(&fimc->lock))
return -ERESTARTSYS;
if (test_bit(ST_CAPT_BUSY, &fimc->state))
goto unlock;
ctx = kzalloc_obj(*ctx);
if (!ctx) {
ret = -ENOMEM;
goto unlock;
}
v4l2_fh_init(&ctx->fh, &fimc->m2m.vfd);
ctx->fimc_dev = fimc;
ctx->s_frame.fmt = fimc_get_format(0);
ctx->d_frame.fmt = fimc_get_format(0);
ret = fimc_ctrls_create(ctx);
if (ret)
goto error_fh;
ctx->fh.ctrl_handler = &ctx->ctrls.handler;
v4l2_fh_add(&ctx->fh, file);
ctx->state = FIMC_CTX_M2M;
ctx->flags = 0;
ctx->in_path = FIMC_IO_DMA;
ctx->out_path = FIMC_IO_DMA;
ctx->scaler.enabled = 1;
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
if (IS_ERR(ctx->fh.m2m_ctx)) {
ret = PTR_ERR(ctx->fh.m2m_ctx);
goto error_c;
}
if (fimc->m2m.refcnt++ == 0)
set_bit(ST_M2M_RUN, &fimc->state);
ret = fimc_m2m_set_default_format(ctx);
if (ret < 0)
goto error_m2m_ctx;
mutex_unlock(&fimc->lock);
return 0;
error_m2m_ctx:
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
error_c:
fimc_ctrls_delete(ctx);
v4l2_fh_del(&ctx->fh, file);
error_fh:
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
unlock:
mutex_unlock(&fimc->lock);
return ret;
}
static int fimc_m2m_release(struct file *file)
{
struct fimc_ctx *ctx = file_to_ctx(file);
struct fimc_dev *fimc = ctx->fimc_dev;
dbg("pid: %d, state: 0x%lx, refcnt= %d",
task_pid_nr(current), fimc->state, fimc->m2m.refcnt);
mutex_lock(&fimc->lock);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
fimc_ctrls_delete(ctx);
v4l2_fh_del(&ctx->fh, file);
v4l2_fh_exit(&ctx->fh);
if (--fimc->m2m.refcnt <= 0)
clear_bit(ST_M2M_RUN, &fimc->state);
kfree(ctx);
mutex_unlock(&fimc->lock);
return 0;
}
static const struct v4l2_file_operations fimc_m2m_fops = {
.owner = THIS_MODULE,
.open = fimc_m2m_open,
.release = fimc_m2m_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static const struct v4l2_m2m_ops m2m_ops = {
.device_run = fimc_device_run,
.job_abort = fimc_job_abort,
};
int fimc_register_m2m_device(struct fimc_dev *fimc,
struct v4l2_device *v4l2_dev)
{
struct video_device *vfd = &fimc->m2m.vfd;
int ret;
fimc->v4l2_dev = v4l2_dev;
memset(vfd, 0, sizeof(*vfd));
vfd->fops = &fimc_m2m_fops;
vfd->ioctl_ops = &fimc_m2m_ioctl_ops;
vfd->v4l2_dev = v4l2_dev;
vfd->minor = -1;
vfd->release = video_device_release_empty;
vfd->lock = &fimc->lock;
vfd->vfl_dir = VFL_DIR_M2M;
vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id);
video_set_drvdata(vfd, fimc);
fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops);
if (IS_ERR(fimc->m2m.m2m_dev)) {
v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n");
return PTR_ERR(fimc->m2m.m2m_dev);
}
ret = media_entity_pads_init(&vfd->entity, 0, NULL);
if (ret)
goto err_me;
ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
if (ret)
goto err_vd;
v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
vfd->name, video_device_node_name(vfd));
return 0;
err_vd:
media_entity_cleanup(&vfd->entity);
err_me:
v4l2_m2m_release(fimc->m2m.m2m_dev);
return ret;
}
void fimc_unregister_m2m_device(struct fimc_dev *fimc)
{
if (!fimc)
return;
if (fimc->m2m.m2m_dev)
v4l2_m2m_release(fimc->m2m.m2m_dev);
if (video_is_registered(&fimc->m2m.vfd)) {
video_unregister_device(&fimc->m2m.vfd);
media_entity_cleanup(&fimc->m2m.vfd.entity);
}
}
