// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Intel Corporation
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include "ipu3.h"
#include "ipu3-dmamap.h"
/******************** v4l2_subdev_ops ********************/
#define IPU3_RUNNING_MODE_VIDEO 0
#define IPU3_RUNNING_MODE_STILL 1
static int imgu_subdev_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
struct imgu_v4l2_subdev,
subdev);
struct imgu_device *imgu = v4l2_get_subdevdata(sd);
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[imgu_sd->pipe];
struct v4l2_rect try_crop = {
.top = 0,
.left = 0,
};
unsigned int i;
try_crop.width =
imgu_pipe->nodes[IMGU_NODE_IN].vdev_fmt.fmt.pix_mp.width;
try_crop.height =
imgu_pipe->nodes[IMGU_NODE_IN].vdev_fmt.fmt.pix_mp.height;
/* Initialize try_fmt */
for (i = 0; i < IMGU_NODE_NUM; i++) {
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_state_get_format(fh->state, i);
try_fmt->width = try_crop.width;
try_fmt->height = try_crop.height;
try_fmt->code = imgu_pipe->nodes[i].pad_fmt.code;
try_fmt->field = V4L2_FIELD_NONE;
}
*v4l2_subdev_state_get_crop(fh->state, IMGU_NODE_IN) = try_crop;
*v4l2_subdev_state_get_compose(fh->state, IMGU_NODE_IN) = try_crop;
return 0;
}
static int imgu_subdev_s_stream(struct v4l2_subdev *sd, int enable)
{
int i;
unsigned int node;
int r = 0;
struct imgu_device *imgu = v4l2_get_subdevdata(sd);
struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
struct imgu_v4l2_subdev,
subdev);
unsigned int pipe = imgu_sd->pipe;
struct device *dev = &imgu->pci_dev->dev;
struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL };
struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL };
struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe];
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
dev_dbg(dev, "%s %d for pipe %u", __func__, enable, pipe);
/* grab ctrl after streamon and return after off */
v4l2_ctrl_grab(imgu_sd->ctrl, enable);
if (!enable) {
imgu_sd->active = false;
return 0;
}
for (i = 0; i < IMGU_NODE_NUM; i++)
imgu_pipe->queue_enabled[i] = imgu_pipe->nodes[i].enabled;
/* This is handled specially */
imgu_pipe->queue_enabled[IPU3_CSS_QUEUE_PARAMS] = false;
/* Initialize CSS formats */
for (i = 0; i < IPU3_CSS_QUEUES; i++) {
node = imgu_map_node(imgu, i);
/* No need to reconfig meta nodes */
if (node == IMGU_NODE_STAT_3A || node == IMGU_NODE_PARAMS)
continue;
fmts[i] = imgu_pipe->queue_enabled[node] ?
&imgu_pipe->nodes[node].vdev_fmt.fmt.pix_mp : NULL;
}
/* Enable VF output only when VF queue requested by user */
css_pipe->vf_output_en = false;
if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
css_pipe->vf_output_en = true;
if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
else
css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
dev_dbg(dev, "IPU3 pipe %u pipe_id %u", pipe, css_pipe->pipe_id);
rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff;
rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds;
rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc;
r = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe);
if (r) {
dev_err(dev, "failed to set initial formats pipe %u with (%d)",
pipe, r);
return r;
}
imgu_sd->active = true;
return 0;
}
static int imgu_subdev_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct imgu_device *imgu = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *mf;
struct imgu_media_pipe *imgu_pipe;
u32 pad = fmt->pad;
struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
struct imgu_v4l2_subdev,
subdev);
unsigned int pipe = imgu_sd->pipe;
imgu_pipe = &imgu->imgu_pipe[pipe];
if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
fmt->format = imgu_pipe->nodes[pad].pad_fmt;
} else {
mf = v4l2_subdev_state_get_format(sd_state, pad);
fmt->format = *mf;
}
return 0;
}
static int imgu_subdev_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct imgu_media_pipe *imgu_pipe;
struct imgu_device *imgu = v4l2_get_subdevdata(sd);
struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
struct imgu_v4l2_subdev,
subdev);
struct v4l2_mbus_framefmt *mf;
u32 pad = fmt->pad;
unsigned int pipe = imgu_sd->pipe;
dev_dbg(&imgu->pci_dev->dev, "set subdev %u pad %u fmt to [%ux%u]",
pipe, pad, fmt->format.width, fmt->format.height);
imgu_pipe = &imgu->imgu_pipe[pipe];
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
mf = v4l2_subdev_state_get_format(sd_state, pad);
else
mf = &imgu_pipe->nodes[pad].pad_fmt;
fmt->format.code = mf->code;
/* Clamp the w and h based on the hardware capabilities */
if (imgu_sd->subdev_pads[pad].flags & MEDIA_PAD_FL_SOURCE) {
fmt->format.width = clamp(fmt->format.width,
IPU3_OUTPUT_MIN_WIDTH,
IPU3_OUTPUT_MAX_WIDTH);
fmt->format.height = clamp(fmt->format.height,
IPU3_OUTPUT_MIN_HEIGHT,
IPU3_OUTPUT_MAX_HEIGHT);
} else {
fmt->format.width = clamp(fmt->format.width,
IPU3_INPUT_MIN_WIDTH,
IPU3_INPUT_MAX_WIDTH);
fmt->format.height = clamp(fmt->format.height,
IPU3_INPUT_MIN_HEIGHT,
IPU3_INPUT_MAX_HEIGHT);
}
*mf = fmt->format;
return 0;
}
static struct v4l2_rect *
imgu_subdev_get_crop(struct imgu_v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state, unsigned int pad,
enum v4l2_subdev_format_whence which)
{
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_state_get_crop(sd_state, pad);
else
return &sd->rect.eff;
}
static struct v4l2_rect *
imgu_subdev_get_compose(struct imgu_v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state, unsigned int pad,
enum v4l2_subdev_format_whence which)
{
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_state_get_compose(sd_state, pad);
else
return &sd->rect.bds;
}
static int imgu_subdev_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct imgu_v4l2_subdev *imgu_sd =
container_of(sd, struct imgu_v4l2_subdev, subdev);
if (sel->pad != IMGU_NODE_IN)
return -EINVAL;
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
sel->r = *imgu_subdev_get_crop(imgu_sd, sd_state, sel->pad,
sel->which);
return 0;
case V4L2_SEL_TGT_COMPOSE:
sel->r = *imgu_subdev_get_compose(imgu_sd, sd_state, sel->pad,
sel->which);
return 0;
default:
return -EINVAL;
}
}
static int imgu_subdev_set_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct imgu_device *imgu = v4l2_get_subdevdata(sd);
struct imgu_v4l2_subdev *imgu_sd =
container_of(sd, struct imgu_v4l2_subdev, subdev);
struct v4l2_rect *rect;
dev_dbg(&imgu->pci_dev->dev,
"set subdev %u sel which %u target 0x%4x rect [%ux%u]",
imgu_sd->pipe, sel->which, sel->target,
sel->r.width, sel->r.height);
if (sel->pad != IMGU_NODE_IN)
return -EINVAL;
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
rect = imgu_subdev_get_crop(imgu_sd, sd_state, sel->pad,
sel->which);
break;
case V4L2_SEL_TGT_COMPOSE:
rect = imgu_subdev_get_compose(imgu_sd, sd_state, sel->pad,
sel->which);
break;
default:
return -EINVAL;
}
*rect = sel->r;
return 0;
}
/******************** media_entity_operations ********************/
static int imgu_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct imgu_media_pipe *imgu_pipe;
struct v4l2_subdev *sd = container_of(entity, struct v4l2_subdev,
entity);
struct imgu_device *imgu = v4l2_get_subdevdata(sd);
struct imgu_v4l2_subdev *imgu_sd = container_of(sd,
struct imgu_v4l2_subdev,
subdev);
unsigned int pipe = imgu_sd->pipe;
u32 pad = local->index;
WARN_ON(pad >= IMGU_NODE_NUM);
dev_dbg(&imgu->pci_dev->dev, "pipe %u pad %u is %s", pipe, pad,
flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled");
imgu_pipe = &imgu->imgu_pipe[pipe];
imgu_pipe->nodes[pad].enabled = flags & MEDIA_LNK_FL_ENABLED;
/* enable input node to enable the pipe */
if (pad != IMGU_NODE_IN)
return 0;
if (flags & MEDIA_LNK_FL_ENABLED)
__set_bit(pipe, imgu->css.enabled_pipes);
else
__clear_bit(pipe, imgu->css.enabled_pipes);
dev_dbg(&imgu->pci_dev->dev, "pipe %u is %s", pipe,
flags & MEDIA_LNK_FL_ENABLED ? "enabled" : "disabled");
return 0;
}
/******************** vb2_ops ********************/
static int imgu_vb2_buf_init(struct vb2_buffer *vb)
{
struct sg_table *sg = vb2_dma_sg_plane_desc(vb, 0);
struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
struct imgu_buffer *buf = container_of(vb,
struct imgu_buffer, vid_buf.vbb.vb2_buf);
struct imgu_video_device *node =
container_of(vb->vb2_queue, struct imgu_video_device, vbq);
unsigned int queue = imgu_node_to_queue(node->id);
if (queue == IPU3_CSS_QUEUE_PARAMS)
return 0;
return imgu_dmamap_map_sg(imgu, sg->sgl, sg->nents, &buf->map);
}
/* Called when each buffer is freed */
static void imgu_vb2_buf_cleanup(struct vb2_buffer *vb)
{
struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
struct imgu_buffer *buf = container_of(vb,
struct imgu_buffer, vid_buf.vbb.vb2_buf);
struct imgu_video_device *node =
container_of(vb->vb2_queue, struct imgu_video_device, vbq);
unsigned int queue = imgu_node_to_queue(node->id);
if (queue == IPU3_CSS_QUEUE_PARAMS)
return;
imgu_dmamap_unmap(imgu, &buf->map);
}
/* Transfer buffer ownership to me */
static void imgu_vb2_buf_queue(struct vb2_buffer *vb)
{
struct imgu_device *imgu = vb2_get_drv_priv(vb->vb2_queue);
struct imgu_video_device *node =
container_of(vb->vb2_queue, struct imgu_video_device, vbq);
unsigned int queue = imgu_node_to_queue(node->id);
struct imgu_buffer *buf = container_of(vb, struct imgu_buffer,
vid_buf.vbb.vb2_buf);
unsigned long need_bytes;
unsigned long payload = vb2_get_plane_payload(vb, 0);
if (vb->vb2_queue->type == V4L2_BUF_TYPE_META_CAPTURE ||
vb->vb2_queue->type == V4L2_BUF_TYPE_META_OUTPUT)
need_bytes = node->vdev_fmt.fmt.meta.buffersize;
else
need_bytes = node->vdev_fmt.fmt.pix_mp.plane_fmt[0].sizeimage;
if (queue == IPU3_CSS_QUEUE_PARAMS && payload && payload < need_bytes) {
dev_err(&imgu->pci_dev->dev, "invalid data size for params.");
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
return;
}
mutex_lock(&imgu->lock);
if (queue != IPU3_CSS_QUEUE_PARAMS)
imgu_css_buf_init(&buf->css_buf, queue, buf->map.daddr);
list_add_tail(&buf->vid_buf.list, &node->buffers);
mutex_unlock(&imgu->lock);
vb2_set_plane_payload(vb, 0, need_bytes);
mutex_lock(&imgu->streaming_lock);
if (imgu->streaming)
imgu_queue_buffers(imgu, false, node->pipe);
mutex_unlock(&imgu->streaming_lock);
dev_dbg(&imgu->pci_dev->dev, "%s for pipe %u node %u", __func__,
node->pipe, node->id);
}
static int imgu_vb2_queue_setup(struct vb2_queue *vq,
unsigned int *num_buffers,
unsigned int *num_planes,
unsigned int sizes[],
struct device *alloc_devs[])
{
struct imgu_device *imgu = vb2_get_drv_priv(vq);
struct imgu_video_device *node =
container_of(vq, struct imgu_video_device, vbq);
const struct v4l2_format *fmt = &node->vdev_fmt;
unsigned int size;
*num_buffers = clamp_val(*num_buffers, 1, VB2_MAX_FRAME);
alloc_devs[0] = &imgu->pci_dev->dev;
if (vq->type == V4L2_BUF_TYPE_META_CAPTURE ||
vq->type == V4L2_BUF_TYPE_META_OUTPUT)
size = fmt->fmt.meta.buffersize;
else
size = fmt->fmt.pix_mp.plane_fmt[0].sizeimage;
if (*num_planes) {
if (sizes[0] < size)
return -EINVAL;
size = sizes[0];
}
*num_planes = 1;
sizes[0] = size;
/* Initialize buffer queue */
INIT_LIST_HEAD(&node->buffers);
return 0;
}
/* Check if all enabled video nodes are streaming, exception ignored */
static bool imgu_all_nodes_streaming(struct imgu_device *imgu,
struct imgu_video_device *except)
{
unsigned int i, pipe, p;
struct imgu_video_device *node;
struct device *dev = &imgu->pci_dev->dev;
pipe = except->pipe;
if (!test_bit(pipe, imgu->css.enabled_pipes)) {
dev_warn(&imgu->pci_dev->dev,
"pipe %u link is not ready yet", pipe);
return false;
}
for_each_set_bit(p, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) {
for (i = 0; i < IMGU_NODE_NUM; i++) {
node = &imgu->imgu_pipe[p].nodes[i];
dev_dbg(dev, "%s pipe %u queue %u name %s enabled = %u",
__func__, p, i, node->name, node->enabled);
if (node == except)
continue;
if (node->enabled && !vb2_start_streaming_called(&node->vbq))
return false;
}
}
return true;
}
static void imgu_return_all_buffers(struct imgu_device *imgu,
struct imgu_video_device *node,
enum vb2_buffer_state state)
{
struct imgu_vb2_buffer *b, *b0;
/* Return all buffers */
mutex_lock(&imgu->lock);
list_for_each_entry_safe(b, b0, &node->buffers, list) {
list_del(&b->list);
vb2_buffer_done(&b->vbb.vb2_buf, state);
}
mutex_unlock(&imgu->lock);
}
static int imgu_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct imgu_media_pipe *imgu_pipe;
struct imgu_device *imgu = vb2_get_drv_priv(vq);
struct device *dev = &imgu->pci_dev->dev;
struct imgu_video_device *node =
container_of(vq, struct imgu_video_device, vbq);
int r;
unsigned int pipe;
dev_dbg(dev, "%s node name %s pipe %u id %u", __func__,
node->name, node->pipe, node->id);
mutex_lock(&imgu->streaming_lock);
if (imgu->streaming) {
r = -EBUSY;
mutex_unlock(&imgu->streaming_lock);
goto fail_return_bufs;
}
mutex_unlock(&imgu->streaming_lock);
if (!node->enabled) {
dev_err(dev, "IMGU node is not enabled");
r = -EINVAL;
goto fail_return_bufs;
}
pipe = node->pipe;
imgu_pipe = &imgu->imgu_pipe[pipe];
atomic_set(&node->sequence, 0);
r = video_device_pipeline_start(&node->vdev, &imgu_pipe->pipeline);
if (r < 0)
goto fail_return_bufs;
if (!imgu_all_nodes_streaming(imgu, node))
return 0;
for_each_set_bit(pipe, imgu->css.enabled_pipes, IMGU_MAX_PIPE_NUM) {
r = v4l2_subdev_call(&imgu->imgu_pipe[pipe].imgu_sd.subdev,
video, s_stream, 1);
if (r < 0)
goto fail_stop_pipeline;
}
/* Start streaming of the whole pipeline now */
dev_dbg(dev, "IMGU streaming is ready to start");
mutex_lock(&imgu->streaming_lock);
r = imgu_s_stream(imgu, true);
if (!r)
imgu->streaming = true;
mutex_unlock(&imgu->streaming_lock);
return 0;
fail_stop_pipeline:
video_device_pipeline_stop(&node->vdev);
fail_return_bufs:
imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_QUEUED);
return r;
}
static void imgu_vb2_stop_streaming(struct vb2_queue *vq)
{
struct imgu_media_pipe *imgu_pipe;
struct imgu_device *imgu = vb2_get_drv_priv(vq);
struct device *dev = &imgu->pci_dev->dev;
struct imgu_video_device *node =
container_of(vq, struct imgu_video_device, vbq);
int r;
unsigned int pipe;
bool stop_streaming = false;
/* Verify that the node had been setup with imgu_v4l2_node_setup() */
WARN_ON(!node->enabled);
pipe = node->pipe;
dev_dbg(dev, "Try to stream off node [%u][%u]", pipe, node->id);
/*
* When the first node of a streaming setup is stopped, the entire
* pipeline needs to stop before individual nodes are disabled.
* Perform the inverse of the initial setup.
*
* Part 1 - s_stream on the entire pipeline
*/
mutex_lock(&imgu->streaming_lock);
if (imgu->streaming) {
/* Yes, really stop streaming now */
dev_dbg(dev, "IMGU streaming is ready to stop");
r = imgu_s_stream(imgu, false);
if (!r)
imgu->streaming = false;
stop_streaming = true;
}
mutex_unlock(&imgu->streaming_lock);
/* Part 2 - s_stream on subdevs
*
* If we call s_stream multiple times, Linux v6.7's call_s_stream()
* WARNs and aborts. Thus, disable all pipes at once, and only once.
*/
if (stop_streaming) {
for_each_set_bit(pipe, imgu->css.enabled_pipes,
IMGU_MAX_PIPE_NUM) {
imgu_pipe = &imgu->imgu_pipe[pipe];
r = v4l2_subdev_call(&imgu_pipe->imgu_sd.subdev,
video, s_stream, 0);
if (r)
dev_err(&imgu->pci_dev->dev,
"failed to stop subdev streaming\n");
}
}
/* Part 3 - individual node teardown */
video_device_pipeline_stop(&node->vdev);
imgu_return_all_buffers(imgu, node, VB2_BUF_STATE_ERROR);
}
/******************** v4l2_ioctl_ops ********************/
#define VID_CAPTURE 0
#define VID_OUTPUT 1
#define DEF_VID_CAPTURE 0
#define DEF_VID_OUTPUT 1
struct imgu_fmt {
u32 fourcc;
u16 type; /* VID_CAPTURE or VID_OUTPUT not both */
};
/* format descriptions for capture and preview */
static const struct imgu_fmt formats[] = {
{ V4L2_PIX_FMT_NV12, VID_CAPTURE },
{ V4L2_PIX_FMT_IPU3_SGRBG10, VID_OUTPUT },
{ V4L2_PIX_FMT_IPU3_SBGGR10, VID_OUTPUT },
{ V4L2_PIX_FMT_IPU3_SGBRG10, VID_OUTPUT },
{ V4L2_PIX_FMT_IPU3_SRGGB10, VID_OUTPUT },
};
/* Find the first matched format, return default if not found */
static const struct imgu_fmt *find_format(struct v4l2_format *f, u32 type)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(formats); i++) {
if (formats[i].fourcc == f->fmt.pix_mp.pixelformat &&
formats[i].type == type)
return &formats[i];
}
return type == VID_CAPTURE ? &formats[DEF_VID_CAPTURE] :
&formats[DEF_VID_OUTPUT];
}
static int imgu_vidioc_querycap(struct file *file, void *fh,
struct v4l2_capability *cap)
{
struct imgu_device *imgu = video_drvdata(file);
strscpy(cap->driver, IMGU_NAME, sizeof(cap->driver));
strscpy(cap->card, IMGU_NAME, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
pci_name(imgu->pci_dev));
return 0;
}
static int enum_fmts(struct v4l2_fmtdesc *f, u32 type)
{
unsigned int i, j;
if (f->mbus_code != 0 && f->mbus_code != MEDIA_BUS_FMT_FIXED)
return -EINVAL;
for (i = j = 0; i < ARRAY_SIZE(formats); ++i) {
if (formats[i].type == type) {
if (j == f->index)
break;
++j;
}
}
if (i < ARRAY_SIZE(formats)) {
f->pixelformat = formats[i].fourcc;
return 0;
}
return -EINVAL;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
return -EINVAL;
return enum_fmts(f, VID_CAPTURE);
}
static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
return -EINVAL;
return enum_fmts(f, VID_OUTPUT);
}
/* Propagate forward always the format from the CIO2 subdev */
static int imgu_vidioc_g_fmt(struct file *file, void *fh,
struct v4l2_format *f)
{
struct imgu_video_device *node = file_to_intel_imgu_node(file);
f->fmt = node->vdev_fmt.fmt;
return 0;
}
/*
* Set input/output format. Unless it is just a try, this also resets
* selections (ie. effective and BDS resolutions) to defaults.
*/
static int imgu_fmt(struct imgu_device *imgu, unsigned int pipe, int node,
struct v4l2_format *f, bool try)
{
struct device *dev = &imgu->pci_dev->dev;
struct v4l2_pix_format_mplane *fmts[IPU3_CSS_QUEUES] = { NULL };
struct v4l2_rect *rects[IPU3_CSS_RECTS] = { NULL };
struct v4l2_mbus_framefmt pad_fmt;
unsigned int i, css_q;
int ret;
struct imgu_css_pipe *css_pipe = &imgu->css.pipes[pipe];
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd;
dev_dbg(dev, "set fmt node [%u][%u](try = %u)", pipe, node, try);
for (i = 0; i < IMGU_NODE_NUM; i++)
dev_dbg(dev, "IMGU pipe %u node %u enabled = %u",
pipe, i, imgu_pipe->nodes[i].enabled);
if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
css_pipe->vf_output_en = true;
if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
else
css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
dev_dbg(dev, "IPU3 pipe %u pipe_id = %u", pipe, css_pipe->pipe_id);
css_q = imgu_node_to_queue(node);
for (i = 0; i < IPU3_CSS_QUEUES; i++) {
unsigned int inode = imgu_map_node(imgu, i);
/* Skip the meta node */
if (inode == IMGU_NODE_STAT_3A || inode == IMGU_NODE_PARAMS)
continue;
/* CSS expects some format on OUT queue */
if (i != IPU3_CSS_QUEUE_OUT &&
!imgu_pipe->nodes[inode].enabled && !try) {
fmts[i] = NULL;
continue;
}
if (i == css_q) {
fmts[i] = &f->fmt.pix_mp;
continue;
}
if (try) {
fmts[i] = kmemdup(&imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp,
sizeof(struct v4l2_pix_format_mplane),
GFP_KERNEL);
if (!fmts[i]) {
ret = -ENOMEM;
goto out;
}
} else {
fmts[i] = &imgu_pipe->nodes[inode].vdev_fmt.fmt.pix_mp;
}
}
if (!try) {
/* eff and bds res got by imgu_s_sel */
struct imgu_v4l2_subdev *imgu_sd = &imgu_pipe->imgu_sd;
rects[IPU3_CSS_RECT_EFFECTIVE] = &imgu_sd->rect.eff;
rects[IPU3_CSS_RECT_BDS] = &imgu_sd->rect.bds;
rects[IPU3_CSS_RECT_GDC] = &imgu_sd->rect.gdc;
/* suppose that pad fmt was set by subdev s_fmt before */
pad_fmt = imgu_pipe->nodes[IMGU_NODE_IN].pad_fmt;
rects[IPU3_CSS_RECT_GDC]->width = pad_fmt.width;
rects[IPU3_CSS_RECT_GDC]->height = pad_fmt.height;
}
if (!fmts[css_q]) {
ret = -EINVAL;
goto out;
}
if (try)
ret = imgu_css_fmt_try(&imgu->css, fmts, rects, pipe);
else
ret = imgu_css_fmt_set(&imgu->css, fmts, rects, pipe);
/* ret is the binary number in the firmware blob */
if (ret < 0)
goto out;
/*
* imgu doesn't set the node to the value given by user
* before we return success from this function, so set it here.
*/
if (!try)
imgu_pipe->nodes[node].vdev_fmt.fmt.pix_mp = f->fmt.pix_mp;
out:
if (try) {
for (i = 0; i < IPU3_CSS_QUEUES; i++)
if (i != css_q)
kfree(fmts[i]);
}
return ret;
}
static int imgu_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
const struct imgu_fmt *fmt;
if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
fmt = find_format(f, VID_CAPTURE);
else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
fmt = find_format(f, VID_OUTPUT);
else
return -EINVAL;
pixm->pixelformat = fmt->fourcc;
return 0;
}
static int imgu_vidioc_try_fmt(struct file *file, void *fh,
struct v4l2_format *f)
{
struct imgu_device *imgu = video_drvdata(file);
struct device *dev = &imgu->pci_dev->dev;
struct imgu_video_device *node = file_to_intel_imgu_node(file);
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
int r;
dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__,
pix_mp->width, pix_mp->height, node->id);
r = imgu_try_fmt(file, fh, f);
if (r)
return r;
return imgu_fmt(imgu, node->pipe, node->id, f, true);
}
static int imgu_vidioc_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
{
struct imgu_device *imgu = video_drvdata(file);
struct device *dev = &imgu->pci_dev->dev;
struct imgu_video_device *node = file_to_intel_imgu_node(file);
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
int r;
dev_dbg(dev, "%s [%ux%u] for node %u\n", __func__,
pix_mp->width, pix_mp->height, node->id);
r = imgu_try_fmt(file, fh, f);
if (r)
return r;
return imgu_fmt(imgu, node->pipe, node->id, f, false);
}
struct imgu_meta_fmt {
__u32 fourcc;
char *name;
};
/* From drivers/media/v4l2-core/v4l2-ioctl.c */
static const struct imgu_meta_fmt meta_fmts[] = {
{ V4L2_META_FMT_IPU3_PARAMS, "IPU3 processing parameters" },
{ V4L2_META_FMT_IPU3_STAT_3A, "IPU3 3A statistics" },
};
static int imgu_meta_enum_format(struct file *file, void *fh,
struct v4l2_fmtdesc *fmt)
{
struct imgu_video_device *node = file_to_intel_imgu_node(file);
unsigned int i = fmt->type == V4L2_BUF_TYPE_META_OUTPUT ? 0 : 1;
/* Each node is dedicated to only one meta format */
if (fmt->index > 0 || fmt->type != node->vbq.type)
return -EINVAL;
if (fmt->mbus_code != 0 && fmt->mbus_code != MEDIA_BUS_FMT_FIXED)
return -EINVAL;
strscpy(fmt->description, meta_fmts[i].name, sizeof(fmt->description));
fmt->pixelformat = meta_fmts[i].fourcc;
return 0;
}
static int imgu_vidioc_g_meta_fmt(struct file *file, void *fh,
struct v4l2_format *f)
{
struct imgu_video_device *node = file_to_intel_imgu_node(file);
if (f->type != node->vbq.type)
return -EINVAL;
f->fmt = node->vdev_fmt.fmt;
return 0;
}
/******************** function pointers ********************/
static const struct v4l2_subdev_internal_ops imgu_subdev_internal_ops = {
.open = imgu_subdev_open,
};
static const struct v4l2_subdev_core_ops imgu_subdev_core_ops = {
.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_subdev_video_ops imgu_subdev_video_ops = {
.s_stream = imgu_subdev_s_stream,
};
static const struct v4l2_subdev_pad_ops imgu_subdev_pad_ops = {
.link_validate = v4l2_subdev_link_validate_default,
.get_fmt = imgu_subdev_get_fmt,
.set_fmt = imgu_subdev_set_fmt,
.get_selection = imgu_subdev_get_selection,
.set_selection = imgu_subdev_set_selection,
};
static const struct v4l2_subdev_ops imgu_subdev_ops = {
.core = &imgu_subdev_core_ops,
.video = &imgu_subdev_video_ops,
.pad = &imgu_subdev_pad_ops,
};
static const struct media_entity_operations imgu_media_ops = {
.link_setup = imgu_link_setup,
.link_validate = v4l2_subdev_link_validate,
};
/****************** vb2_ops of the Q ********************/
static const struct vb2_ops imgu_vb2_ops = {
.buf_init = imgu_vb2_buf_init,
.buf_cleanup = imgu_vb2_buf_cleanup,
.buf_queue = imgu_vb2_buf_queue,
.queue_setup = imgu_vb2_queue_setup,
.start_streaming = imgu_vb2_start_streaming,
.stop_streaming = imgu_vb2_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
/****************** v4l2_file_operations *****************/
static const struct v4l2_file_operations imgu_v4l2_fops = {
.unlocked_ioctl = video_ioctl2,
.open = v4l2_fh_open,
.release = vb2_fop_release,
.poll = vb2_fop_poll,
.mmap = vb2_fop_mmap,
};
/******************** v4l2_ioctl_ops ********************/
static const struct v4l2_ioctl_ops imgu_v4l2_ioctl_ops = {
.vidioc_querycap = imgu_vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap_mplane = imgu_vidioc_g_fmt,
.vidioc_s_fmt_vid_cap_mplane = imgu_vidioc_s_fmt,
.vidioc_try_fmt_vid_cap_mplane = imgu_vidioc_try_fmt,
.vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
.vidioc_g_fmt_vid_out_mplane = imgu_vidioc_g_fmt,
.vidioc_s_fmt_vid_out_mplane = imgu_vidioc_s_fmt,
.vidioc_try_fmt_vid_out_mplane = imgu_vidioc_try_fmt,
/* buffer queue management */
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_create_bufs = vb2_ioctl_create_bufs,
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_expbuf = vb2_ioctl_expbuf,
};
static const struct v4l2_ioctl_ops imgu_v4l2_meta_ioctl_ops = {
.vidioc_querycap = imgu_vidioc_querycap,
/* meta capture */
.vidioc_enum_fmt_meta_cap = imgu_meta_enum_format,
.vidioc_g_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
.vidioc_s_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
.vidioc_try_fmt_meta_cap = imgu_vidioc_g_meta_fmt,
/* meta output */
.vidioc_enum_fmt_meta_out = imgu_meta_enum_format,
.vidioc_g_fmt_meta_out = imgu_vidioc_g_meta_fmt,
.vidioc_s_fmt_meta_out = imgu_vidioc_g_meta_fmt,
.vidioc_try_fmt_meta_out = imgu_vidioc_g_meta_fmt,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_create_bufs = vb2_ioctl_create_bufs,
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_expbuf = vb2_ioctl_expbuf,
};
static int imgu_sd_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct imgu_v4l2_subdev *imgu_sd =
container_of(ctrl->handler, struct imgu_v4l2_subdev, ctrl_handler);
struct imgu_device *imgu = v4l2_get_subdevdata(&imgu_sd->subdev);
struct device *dev = &imgu->pci_dev->dev;
dev_dbg(dev, "set val %d to ctrl 0x%8x for subdev %u",
ctrl->val, ctrl->id, imgu_sd->pipe);
switch (ctrl->id) {
case V4L2_CID_INTEL_IPU3_MODE:
atomic_set(&imgu_sd->running_mode, ctrl->val);
return 0;
default:
return -EINVAL;
}
}
static const struct v4l2_ctrl_ops imgu_subdev_ctrl_ops = {
.s_ctrl = imgu_sd_s_ctrl,
};
static const char * const imgu_ctrl_mode_strings[] = {
"Video mode",
"Still mode",
};
static const struct v4l2_ctrl_config imgu_subdev_ctrl_mode = {
.ops = &imgu_subdev_ctrl_ops,
.id = V4L2_CID_INTEL_IPU3_MODE,
.name = "IPU3 Pipe Mode",
.type = V4L2_CTRL_TYPE_MENU,
.max = ARRAY_SIZE(imgu_ctrl_mode_strings) - 1,
.def = IPU3_RUNNING_MODE_VIDEO,
.qmenu = imgu_ctrl_mode_strings,
};
/******************** Framework registration ********************/
/* helper function to config node's video properties */
static void imgu_node_to_v4l2(u32 node, struct video_device *vdev,
struct v4l2_format *f)
{
u32 cap;
/* Should not happen */
WARN_ON(node >= IMGU_NODE_NUM);
switch (node) {
case IMGU_NODE_IN:
cap = V4L2_CAP_VIDEO_OUTPUT_MPLANE;
f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
vdev->ioctl_ops = &imgu_v4l2_ioctl_ops;
break;
case IMGU_NODE_PARAMS:
cap = V4L2_CAP_META_OUTPUT;
f->type = V4L2_BUF_TYPE_META_OUTPUT;
f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_PARAMS;
vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops;
imgu_css_meta_fmt_set(&f->fmt.meta);
break;
case IMGU_NODE_STAT_3A:
cap = V4L2_CAP_META_CAPTURE;
f->type = V4L2_BUF_TYPE_META_CAPTURE;
f->fmt.meta.dataformat = V4L2_META_FMT_IPU3_STAT_3A;
vdev->ioctl_ops = &imgu_v4l2_meta_ioctl_ops;
imgu_css_meta_fmt_set(&f->fmt.meta);
break;
default:
cap = V4L2_CAP_VIDEO_CAPTURE_MPLANE;
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
vdev->ioctl_ops = &imgu_v4l2_ioctl_ops;
}
vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_IO_MC | cap;
}
static int imgu_v4l2_subdev_register(struct imgu_device *imgu,
struct imgu_v4l2_subdev *imgu_sd,
unsigned int pipe)
{
int i, r;
struct v4l2_ctrl_handler *hdl = &imgu_sd->ctrl_handler;
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
/* Initialize subdev media entity */
imgu_sd->subdev.entity.ops = &imgu_media_ops;
for (i = 0; i < IMGU_NODE_NUM; i++) {
imgu_sd->subdev_pads[i].flags = imgu_pipe->nodes[i].output ?
MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
}
r = media_entity_pads_init(&imgu_sd->subdev.entity, IMGU_NODE_NUM,
imgu_sd->subdev_pads);
if (r) {
dev_err(&imgu->pci_dev->dev,
"failed initialize subdev media entity (%d)\n", r);
return r;
}
/* Initialize subdev */
v4l2_subdev_init(&imgu_sd->subdev, &imgu_subdev_ops);
imgu_sd->subdev.entity.function = MEDIA_ENT_F_PROC_VIDEO_STATISTICS;
imgu_sd->subdev.internal_ops = &imgu_subdev_internal_ops;
imgu_sd->subdev.flags = V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS;
snprintf(imgu_sd->subdev.name, sizeof(imgu_sd->subdev.name),
"%s %u", IMGU_NAME, pipe);
v4l2_set_subdevdata(&imgu_sd->subdev, imgu);
atomic_set(&imgu_sd->running_mode, IPU3_RUNNING_MODE_VIDEO);
v4l2_ctrl_handler_init(hdl, 1);
imgu_sd->subdev.ctrl_handler = hdl;
imgu_sd->ctrl = v4l2_ctrl_new_custom(hdl, &imgu_subdev_ctrl_mode, NULL);
if (hdl->error) {
r = hdl->error;
dev_err(&imgu->pci_dev->dev,
"failed to create subdev v4l2 ctrl with err %d", r);
goto fail_subdev;
}
r = v4l2_device_register_subdev(&imgu->v4l2_dev, &imgu_sd->subdev);
if (r) {
dev_err(&imgu->pci_dev->dev,
"failed initialize subdev (%d)\n", r);
goto fail_subdev;
}
imgu_sd->pipe = pipe;
return 0;
fail_subdev:
v4l2_ctrl_handler_free(imgu_sd->subdev.ctrl_handler);
media_entity_cleanup(&imgu_sd->subdev.entity);
return r;
}
static int imgu_v4l2_node_setup(struct imgu_device *imgu, unsigned int pipe,
int node_num)
{
int r;
u32 flags;
struct v4l2_mbus_framefmt def_bus_fmt = { 0 };
struct v4l2_pix_format_mplane def_pix_fmt = { 0 };
struct device *dev = &imgu->pci_dev->dev;
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
struct v4l2_subdev *sd = &imgu_pipe->imgu_sd.subdev;
struct imgu_video_device *node = &imgu_pipe->nodes[node_num];
struct video_device *vdev = &node->vdev;
struct vb2_queue *vbq = &node->vbq;
/* Initialize formats to default values */
def_bus_fmt.width = 1920;
def_bus_fmt.height = 1080;
def_bus_fmt.code = MEDIA_BUS_FMT_FIXED;
def_bus_fmt.field = V4L2_FIELD_NONE;
def_bus_fmt.colorspace = V4L2_COLORSPACE_RAW;
def_bus_fmt.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
def_bus_fmt.quantization = V4L2_QUANTIZATION_DEFAULT;
def_bus_fmt.xfer_func = V4L2_XFER_FUNC_DEFAULT;
def_pix_fmt.width = def_bus_fmt.width;
def_pix_fmt.height = def_bus_fmt.height;
def_pix_fmt.field = def_bus_fmt.field;
def_pix_fmt.num_planes = 1;
def_pix_fmt.plane_fmt[0].bytesperline =
imgu_bytesperline(def_pix_fmt.width,
IMGU_ABI_FRAME_FORMAT_RAW_PACKED);
def_pix_fmt.plane_fmt[0].sizeimage =
def_pix_fmt.height * def_pix_fmt.plane_fmt[0].bytesperline;
def_pix_fmt.flags = 0;
def_pix_fmt.colorspace = def_bus_fmt.colorspace;
def_pix_fmt.ycbcr_enc = def_bus_fmt.ycbcr_enc;
def_pix_fmt.quantization = def_bus_fmt.quantization;
def_pix_fmt.xfer_func = def_bus_fmt.xfer_func;
/* Initialize miscellaneous variables */
mutex_init(&node->lock);
INIT_LIST_HEAD(&node->buffers);
/* Initialize formats to default values */
node->pad_fmt = def_bus_fmt;
node->id = node_num;
node->pipe = pipe;
imgu_node_to_v4l2(node_num, vdev, &node->vdev_fmt);
if (node->vdev_fmt.type ==
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE ||
node->vdev_fmt.type ==
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
def_pix_fmt.pixelformat = node->output ?
V4L2_PIX_FMT_IPU3_SGRBG10 :
V4L2_PIX_FMT_NV12;
node->vdev_fmt.fmt.pix_mp = def_pix_fmt;
}
/* Initialize media entities */
node->vdev_pad.flags = node->output ?
MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
vdev->entity.ops = NULL;
r = media_entity_pads_init(&vdev->entity, 1, &node->vdev_pad);
if (r) {
dev_err(dev, "failed initialize media entity (%d)\n", r);
mutex_destroy(&node->lock);
return r;
}
/* Initialize vbq */
vbq->type = node->vdev_fmt.type;
vbq->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF;
vbq->ops = &imgu_vb2_ops;
vbq->mem_ops = &vb2_dma_sg_memops;
if (imgu->buf_struct_size <= 0)
imgu->buf_struct_size =
sizeof(struct imgu_vb2_buffer);
vbq->buf_struct_size = imgu->buf_struct_size;
vbq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
/* can streamon w/o buffers */
vbq->min_queued_buffers = 0;
vbq->drv_priv = imgu;
vbq->lock = &node->lock;
r = vb2_queue_init(vbq);
if (r) {
dev_err(dev, "failed to initialize video queue (%d)", r);
media_entity_cleanup(&vdev->entity);
return r;
}
/* Initialize vdev */
snprintf(vdev->name, sizeof(vdev->name), "%s %u %s",
IMGU_NAME, pipe, node->name);
vdev->release = video_device_release_empty;
vdev->fops = &imgu_v4l2_fops;
vdev->lock = &node->lock;
vdev->v4l2_dev = &imgu->v4l2_dev;
vdev->queue = &node->vbq;
vdev->vfl_dir = node->output ? VFL_DIR_TX : VFL_DIR_RX;
video_set_drvdata(vdev, imgu);
r = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
if (r) {
dev_err(dev, "failed to register video device (%d)", r);
media_entity_cleanup(&vdev->entity);
return r;
}
/* Create link between video node and the subdev pad */
flags = 0;
if (node->enabled)
flags |= MEDIA_LNK_FL_ENABLED;
if (node->output) {
r = media_create_pad_link(&vdev->entity, 0, &sd->entity,
node_num, flags);
} else {
if (node->id == IMGU_NODE_OUT) {
flags |= MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE;
node->enabled = true;
}
r = media_create_pad_link(&sd->entity, node_num, &vdev->entity,
0, flags);
}
if (r) {
dev_err(dev, "failed to create pad link (%d)", r);
video_unregister_device(vdev);
return r;
}
return 0;
}
static void imgu_v4l2_nodes_cleanup_pipe(struct imgu_device *imgu,
unsigned int pipe, int node)
{
int i;
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
for (i = 0; i < node; i++) {
video_unregister_device(&imgu_pipe->nodes[i].vdev);
media_entity_cleanup(&imgu_pipe->nodes[i].vdev.entity);
mutex_destroy(&imgu_pipe->nodes[i].lock);
}
}
static int imgu_v4l2_nodes_setup_pipe(struct imgu_device *imgu, int pipe)
{
int i;
for (i = 0; i < IMGU_NODE_NUM; i++) {
int r = imgu_v4l2_node_setup(imgu, pipe, i);
if (r) {
imgu_v4l2_nodes_cleanup_pipe(imgu, pipe, i);
return r;
}
}
return 0;
}
static void imgu_v4l2_subdev_cleanup(struct imgu_device *imgu, unsigned int i)
{
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[i];
v4l2_device_unregister_subdev(&imgu_pipe->imgu_sd.subdev);
v4l2_ctrl_handler_free(imgu_pipe->imgu_sd.subdev.ctrl_handler);
media_entity_cleanup(&imgu_pipe->imgu_sd.subdev.entity);
}
static void imgu_v4l2_cleanup_pipes(struct imgu_device *imgu, unsigned int pipe)
{
int i;
for (i = 0; i < pipe; i++) {
imgu_v4l2_nodes_cleanup_pipe(imgu, i, IMGU_NODE_NUM);
imgu_v4l2_subdev_cleanup(imgu, i);
}
}
static int imgu_v4l2_register_pipes(struct imgu_device *imgu)
{
struct imgu_media_pipe *imgu_pipe;
int i, r;
for (i = 0; i < IMGU_MAX_PIPE_NUM; i++) {
imgu_pipe = &imgu->imgu_pipe[i];
r = imgu_v4l2_subdev_register(imgu, &imgu_pipe->imgu_sd, i);
if (r) {
dev_err(&imgu->pci_dev->dev,
"failed to register subdev%u ret (%d)\n", i, r);
goto pipes_cleanup;
}
r = imgu_v4l2_nodes_setup_pipe(imgu, i);
if (r) {
imgu_v4l2_subdev_cleanup(imgu, i);
goto pipes_cleanup;
}
}
return 0;
pipes_cleanup:
imgu_v4l2_cleanup_pipes(imgu, i);
return r;
}
int imgu_v4l2_register(struct imgu_device *imgu)
{
int r;
/* Initialize miscellaneous variables */
imgu->streaming = false;
/* Set up media device */
media_device_pci_init(&imgu->media_dev, imgu->pci_dev, IMGU_NAME);
/* Set up v4l2 device */
imgu->v4l2_dev.mdev = &imgu->media_dev;
imgu->v4l2_dev.ctrl_handler = NULL;
r = v4l2_device_register(&imgu->pci_dev->dev, &imgu->v4l2_dev);
if (r) {
dev_err(&imgu->pci_dev->dev,
"failed to register V4L2 device (%d)\n", r);
goto fail_v4l2_dev;
}
r = imgu_v4l2_register_pipes(imgu);
if (r) {
dev_err(&imgu->pci_dev->dev,
"failed to register pipes (%d)\n", r);
goto fail_v4l2_pipes;
}
r = v4l2_device_register_subdev_nodes(&imgu->v4l2_dev);
if (r) {
dev_err(&imgu->pci_dev->dev,
"failed to register subdevs (%d)\n", r);
goto fail_subdevs;
}
r = media_device_register(&imgu->media_dev);
if (r) {
dev_err(&imgu->pci_dev->dev,
"failed to register media device (%d)\n", r);
goto fail_subdevs;
}
return 0;
fail_subdevs:
imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM);
fail_v4l2_pipes:
v4l2_device_unregister(&imgu->v4l2_dev);
fail_v4l2_dev:
media_device_cleanup(&imgu->media_dev);
return r;
}
int imgu_v4l2_unregister(struct imgu_device *imgu)
{
media_device_unregister(&imgu->media_dev);
imgu_v4l2_cleanup_pipes(imgu, IMGU_MAX_PIPE_NUM);
v4l2_device_unregister(&imgu->v4l2_dev);
media_device_cleanup(&imgu->media_dev);
return 0;
}
void imgu_v4l2_buffer_done(struct vb2_buffer *vb,
enum vb2_buffer_state state)
{
struct imgu_vb2_buffer *b =
container_of(vb, struct imgu_vb2_buffer, vbb.vb2_buf);
list_del(&b->list);
vb2_buffer_done(&b->vbb.vb2_buf, state);
}
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