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[media] cx25821: switch to v4l2_fh, add event and prio handling 

It is now possible to remove cx25821_fh and replace it with v4l2_fh,
which in turn makes event handling and core prio handling possible.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-04-14 11:57:18 -03:00 committed by Mauro Carvalho Chehab
parent 84293f0843
commit 8d125c507d
3 changed files with 59 additions and 148 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

193
drivers/media/pci/cx25821/cx25821-video.c
View File

@ -337,7 +337,6 @@ static int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buff
u32 line0_offset;
struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
int bpl_local = LINE_SIZE_D1;
int channel_opened = chan->id;
BUG_ON(NULL == chan->fmt);
if (chan->width < 48 || chan->width > 720 ||
@ -371,33 +370,22 @@ static int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buff
dprintk(1, "init_buffer=%d\n", init_buffer);
if (init_buffer) {
channel_opened = dev->channel_opened;
if (channel_opened < 0 || channel_opened > 7)
channel_opened = 7;
if (dev->channels[channel_opened].pixel_formats ==
PIXEL_FRMT_411)
if (chan->pixel_formats == PIXEL_FRMT_411)
buf->bpl = (buf->fmt->depth * buf->vb.width) >> 3;
else
buf->bpl = (buf->fmt->depth >> 3) * (buf->vb.width);
if (dev->channels[channel_opened].pixel_formats ==
PIXEL_FRMT_411) {
if (chan->pixel_formats == PIXEL_FRMT_411) {
bpl_local = buf->bpl;
} else {
bpl_local = buf->bpl; /* Default */
if (channel_opened >= 0 && channel_opened <= 7) {
if (dev->channels[channel_opened]
.use_cif_resolution) {
if (dev->tvnorm & V4L2_STD_PAL_BG ||
dev->tvnorm & V4L2_STD_PAL_DK)
bpl_local = 352 << 1;
else
bpl_local = dev->channels[
channel_opened].
cif_width << 1;
}
if (chan->use_cif_resolution) {
if (dev->tvnorm & V4L2_STD_PAL_BG ||
dev->tvnorm & V4L2_STD_PAL_DK)
bpl_local = 352 << 1;
else
bpl_local = chan->cif_width << 1;
}
}
@ -534,36 +522,12 @@ static struct videobuf_queue_ops cx25821_video_qops = {
.buf_release = cx25821_buffer_release,
};
static int video_open(struct file *file)
{
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
struct cx25821_fh *fh;
/* allocate + initialize per filehandle data */
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
if (NULL == fh)
return -ENOMEM;
file->private_data = fh;
fh->dev = dev;
fh->channel_id = chan->id;
dev->channel_opened = fh->channel_id;
v4l2_prio_open(&chan->prio, &fh->prio);
dprintk(1, "post videobuf_queue_init()\n");
return 0;
}
static ssize_t video_read(struct file *file, char __user * data, size_t count,
loff_t *ppos)
{
struct cx25821_fh *fh = file->private_data;
struct v4l2_fh *fh = file->private_data;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = fh->dev;
struct cx25821_dev *dev = chan->dev;
int err = 0;
if (mutex_lock_interruptible(&dev->lock))
@ -585,8 +549,12 @@ static unsigned int video_poll(struct file *file,
struct poll_table_struct *wait)
{
struct cx25821_channel *chan = video_drvdata(file);
unsigned long req_events = poll_requested_events(wait);
unsigned int res = v4l2_ctrl_poll(file, wait);
return videobuf_poll_stream(file, &chan->vidq, wait);
if (req_events & (POLLIN | POLLRDNORM))
res |= videobuf_poll_stream(file, &chan->vidq, wait);
return res;
/* This doesn't belong in poll(). This can be done
* much better with vb2. We keep this code here as a
@ -608,7 +576,7 @@ static unsigned int video_poll(struct file *file,
static int video_release(struct file *file)
{
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_fh *fh = file->private_data;
struct v4l2_fh *fh = file->private_data;
struct cx25821_dev *dev = chan->dev;
const struct sram_channel *sram_ch =
dev->channels[0].sram_channels;
@ -631,11 +599,7 @@ static int video_release(struct file *file)
videobuf_mmap_free(&chan->vidq);
mutex_unlock(&dev->lock);
v4l2_prio_close(&chan->prio, fh->prio);
file->private_data = NULL;
kfree(fh);
return 0;
return v4l2_fh_release(file);
}
/* VIDEO IOCTLS */
@ -705,14 +669,13 @@ static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_fh *fh = priv;
if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (chan->streaming_fh && chan->streaming_fh != fh)
if (chan->streaming_fh && chan->streaming_fh != priv)
return -EBUSY;
chan->streaming_fh = fh;
chan->streaming_fh = priv;
return videobuf_streamon(&chan->vidq);
}
@ -720,12 +683,11 @@ static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
{
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_fh *fh = priv;
if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (chan->streaming_fh && chan->streaming_fh != fh)
if (chan->streaming_fh && chan->streaming_fh != priv)
return -EBUSY;
if (chan->streaming_fh == NULL)
return 0;
@ -774,20 +736,12 @@ static int cx25821_is_valid_height(u32 height, v4l2_std_id tvnorm)
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct cx25821_fh *fh = priv;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_dev *dev = chan->dev;
struct v4l2_mbus_framefmt mbus_fmt;
int err;
int pix_format = PIXEL_FRMT_422;
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
fh->prio);
if (0 != err)
return err;
}
err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f);
if (0 != err)
@ -840,10 +794,9 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
static int vidioc_log_status(struct file *file, void *priv)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_fh *fh = priv;
const struct sram_channel *sram_ch =
dev->channels[fh->channel_id].sram_channels;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
const struct sram_channel *sram_ch = chan->sram_channels;
u32 tmp = 0;
cx25821_call_all(dev, core, log_status);
@ -857,8 +810,8 @@ static int vidioc_log_status(struct file *file, void *priv)
static int cx25821_vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_fh *fh = priv;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT;
@ -866,7 +819,7 @@ static int cx25821_vidioc_querycap(struct file *file, void *priv,
strcpy(cap->driver, "cx25821");
strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card));
sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
if (fh->channel_id >= VID_CHANNEL_NUM)
if (chan->id >= VID_CHANNEL_NUM)
cap->device_caps = cap_output;
else
cap->device_caps = cap_input;
@ -909,46 +862,18 @@ static int cx25821_vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer
return videobuf_qbuf(&chan->vidq, p);
}
static int cx25821_vidioc_g_priority(struct file *file, void *f, enum v4l2_priority *p)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev;
struct cx25821_fh *fh = f;
*p = v4l2_prio_max(&dev->channels[fh->channel_id].prio);
return 0;
}
static int cx25821_vidioc_s_priority(struct file *file, void *f,
enum v4l2_priority prio)
{
struct cx25821_fh *fh = f;
struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev;
return v4l2_prio_change(&dev->channels[fh->channel_id].prio, &fh->prio,
prio);
}
static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_channel *chan = video_drvdata(file);
*tvnorms = dev->tvnorm;
*tvnorms = chan->dev->tvnorm;
return 0;
}
int cx25821_vidioc_s_std(struct file *file, void *priv, v4l2_std_id tvnorms)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
int err;
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
fh->prio);
if (0 != err)
return err;
}
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
if (dev->tvnorm == tvnorms)
return 0;
@ -968,7 +893,8 @@ static int cx25821_vidioc_enum_input(struct file *file, void *priv,
[CX25821_VMUX_SVIDEO] = "S-Video",
[CX25821_VMUX_DEBUG] = "for debug only",
};
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
unsigned int n;
n = i->index;
@ -987,7 +913,8 @@ static int cx25821_vidioc_enum_input(struct file *file, void *priv,
static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
*i = dev->input;
return 0;
@ -995,16 +922,8 @@ static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i
static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
struct cx25821_fh *fh = priv;
struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
int err;
if (fh) {
err = v4l2_prio_check(&dev->channels[fh->channel_id].prio,
fh->prio);
if (0 != err)
return err;
}
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
if (i >= CX25821_NR_INPUT || INPUT(i)->type == 0)
return -EINVAL;
@ -1017,7 +936,8 @@ static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
int cx25821_vidioc_g_register(struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
@ -1030,7 +950,8 @@ int cx25821_vidioc_g_register(struct file *file, void *fh,
int cx25821_vidioc_s_register(struct file *file, void *fh,
const struct v4l2_dbg_register *reg)
{
struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
if (!v4l2_chip_match_host(&reg->match))
return -EINVAL;
@ -1070,8 +991,8 @@ static int cx25821_s_ctrl(struct v4l2_ctrl *ctrl)
static long video_ioctl_upstream9(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
int command = 0;
struct upstream_user_struct *data_from_user;
@ -1110,8 +1031,8 @@ static long video_ioctl_upstream9(struct file *file, unsigned int cmd,
static long video_ioctl_upstream10(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
int command = 0;
struct upstream_user_struct *data_from_user;
@ -1150,8 +1071,8 @@ static long video_ioctl_upstream10(struct file *file, unsigned int cmd,
static long video_ioctl_upstream11(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
int command = 0;
struct upstream_user_struct *data_from_user;
@ -1190,8 +1111,8 @@ static long video_ioctl_upstream11(struct file *file, unsigned int cmd,
static long video_ioctl_set(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct cx25821_fh *fh = file->private_data;
struct cx25821_dev *dev = fh->dev;
struct cx25821_channel *chan = video_drvdata(file);
struct cx25821_dev *dev = chan->dev;
struct downstream_user_struct *data_from_user;
int command;
int width = 720;
@ -1300,18 +1221,17 @@ static long video_ioctl_set(struct file *file, unsigned int cmd,
static long cx25821_video_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct cx25821_channel *chan = video_drvdata(file);
int ret = 0;
struct cx25821_fh *fh = file->private_data;
/* check to see if it's the video upstream */
if (fh->channel_id == SRAM_CH09) {
if (chan->id == SRAM_CH09) {
ret = video_ioctl_upstream9(file, cmd, arg);
return ret;
} else if (fh->channel_id == SRAM_CH10) {
} else if (chan->id == SRAM_CH10) {
ret = video_ioctl_upstream10(file, cmd, arg);
return ret;
} else if (fh->channel_id == SRAM_CH11) {
} else if (chan->id == SRAM_CH11) {
ret = video_ioctl_upstream11(file, cmd, arg);
ret = video_ioctl_set(file, cmd, arg);
return ret;
@ -1326,7 +1246,7 @@ static const struct v4l2_ctrl_ops cx25821_ctrl_ops = {
static const struct v4l2_file_operations video_fops = {
.owner = THIS_MODULE,
.open = video_open,
.open = v4l2_fh_open,
.release = video_release,
.read = video_read,
.poll = video_poll,
@ -1352,8 +1272,8 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
.vidioc_log_status = vidioc_log_status,
.vidioc_g_priority = cx25821_vidioc_g_priority,
.vidioc_s_priority = cx25821_vidioc_s_priority,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = cx25821_vidioc_g_register,
.vidioc_s_register = cx25821_vidioc_s_register,
@ -1454,6 +1374,7 @@ int cx25821_video_register(struct cx25821_dev *dev)
vdev->v4l2_dev = &dev->v4l2_dev;
vdev->ctrl_handler = hdl;
vdev->lock = &dev->lock;
set_bit(V4L2_FL_USE_FH_PRIO, &vdev->flags);
snprintf(vdev->name, sizeof(vdev->name), "%s #%d", dev->name, i);
video_set_drvdata(vdev, chan);

1
drivers/media/pci/cx25821/cx25821-video.h
View File

@ -39,6 +39,7 @@
#include "cx25821.h"
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#define VIDEO_DEBUG 0

13
drivers/media/pci/cx25821/cx25821.h
View File

@ -116,15 +116,6 @@ struct cx25821_tvnorm {
u32 cxoformat;
};
struct cx25821_fh {
struct cx25821_dev *dev;
enum v4l2_priority prio;
/* video capture */
int channel_id;
};
enum cx25821_itype {
CX25821_VMUX_COMPOSITE = 1,
CX25821_VMUX_SVIDEO,
@ -207,8 +198,7 @@ struct cx25821_dev;
struct cx25821_channel {
unsigned id;
struct cx25821_dev *dev;
struct cx25821_fh *streaming_fh;
struct v4l2_prio_state prio;
struct v4l2_fh *streaming_fh;
struct v4l2_ctrl_handler hdl;
struct cx25821_data timeout_data;
@ -360,7 +350,6 @@ struct cx25821_dev {
int pixel_format;
int channel_select;
int command;
int channel_opened;
};
struct upstream_user_struct {