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Commit d3829fad authored by Devin Heitmueller's avatar Devin Heitmueller Committed by Mauro Carvalho Chehab
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[media] em28xx: convert to videobuf2 

This patch converts the em28xx driver over to videobuf2.  It is
likely that em28xx_fh can go away entirely, but that will come in
a separate patch.

[mchehab@redhat.com: fix a non-trivial merge conflict with some VBI
 patches; CodingStyle fixes]
Signed-off-by: default avatarDevin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 2a221d34
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Inline Side-by-side
Showing with 338 additions and 589 deletions
drivers/media/usb/em28xx/Kconfig
View file @ d3829fad
......@@ -3,7 +3,7 @@ config VIDEO_EM28XX
depends on VIDEO_DEV && I2C
select VIDEO_TUNER
select VIDEO_TVEEPROM
select VIDEOBUF_VMALLOC
select VIDEOBUF2_VMALLOC
select VIDEO_SAA711X if MEDIA_SUBDRV_AUTOSELECT
select VIDEO_TVP5150 if MEDIA_SUBDRV_AUTOSELECT
select VIDEO_MSP3400 if MEDIA_SUBDRV_AUTOSELECT
......@@ -48,7 +48,6 @@ config VIDEO_EM28XX_DVB
select DVB_S5H1409 if MEDIA_SUBDRV_AUTOSELECT
select MEDIA_TUNER_QT1010 if MEDIA_SUBDRV_AUTOSELECT
select MEDIA_TUNER_TDA18271 if MEDIA_SUBDRV_AUTOSELECT
select VIDEOBUF_DVB
---help---
This adds support for DVB cards based on the
Empiatech em28xx chips.
......
drivers/media/usb/em28xx/em28xx-cards.c
View file @ d3829fad
......@@ -57,7 +57,7 @@ module_param(disable_usb_speed_check, int, 0444);
MODULE_PARM_DESC(disable_usb_speed_check,
"override min bandwidth requirement of 480M bps");
static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
module_param_array(card, int, NULL, 0444);
MODULE_PARM_DESC(card, "card type");
......@@ -2965,6 +2965,8 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
const char *chip_name = default_chip_name;
dev->udev = udev;
mutex_init(&dev->vb_queue_lock);
mutex_init(&dev->vb_vbi_queue_lock);
mutex_init(&dev->ctrl_urb_lock);
spin_lock_init(&dev->slock);
......@@ -3411,6 +3413,9 @@ static int em28xx_usb_probe(struct usb_interface *interface,
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
/* initialize videobuf2 stuff */
em28xx_vb2_setup(dev);
/* allocate device struct */
mutex_init(&dev->lock);
mutex_lock(&dev->lock);
......
drivers/media/usb/em28xx/em28xx-dvb.c
View file @ d3829fad
......@@ -27,7 +27,9 @@
#include "em28xx.h"
#include <media/v4l2-common.h>
#include <media/videobuf-vmalloc.h>
#include <dvb_demux.h>
#include <dvb_net.h>
#include <dmxdev.h>
#include <media/tuner.h>
#include "tuner-simple.h"
#include <linux/gpio.h>
......
drivers/media/usb/em28xx/em28xx-vbi.c
View file @ d3829fad
......@@ -41,105 +41,72 @@ MODULE_PARM_DESC(vbi_debug, "enable debug messages [vbi]");
/* ------------------------------------------------------------------ */
static void
free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
static int vbi_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], void *alloc_ctxs[])
{
struct em28xx_fh *fh = vq->priv_data;
struct em28xx *dev = fh->dev;
unsigned long flags = 0;
if (in_interrupt())
BUG();
/* We used to wait for the buffer to finish here, but this didn't work
because, as we were keeping the state as VIDEOBUF_QUEUED,
videobuf_queue_cancel marked it as finished for us.
(Also, it could wedge forever if the hardware was misconfigured.)
This should be safe; by the time we get here, the buffer isn't
queued anymore. If we ever start marking the buffers as
VIDEOBUF_ACTIVE, it won't be, though.
*/
spin_lock_irqsave(&dev->slock, flags);
if (dev->usb_ctl.vbi_buf == buf)
dev->usb_ctl.vbi_buf = NULL;
spin_unlock_irqrestore(&dev->slock, flags);
struct em28xx *dev = vb2_get_drv_priv(vq);
unsigned long size;
videobuf_vmalloc_free(&buf->vb);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
if (fmt)
size = fmt->fmt.pix.sizeimage;
else
size = dev->vbi_width * dev->vbi_height * 2;
static int
vbi_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
{
struct em28xx_fh *fh = q->priv_data;
struct em28xx *dev = fh->dev;
if (0 == *nbuffers)
*nbuffers = 32;
if (*nbuffers < 2)
*nbuffers = 2;
if (*nbuffers > 32)
*nbuffers = 32;
*size = dev->vbi_width * dev->vbi_height * 2;
*nplanes = 1;
sizes[0] = size;
if (0 == *count)
*count = vbibufs;
if (*count < 2)
*count = 2;
if (*count > 32)
*count = 32;
return 0;
}
static int
vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
enum v4l2_field field)
static int vbi_buffer_prepare(struct vb2_buffer *vb)
{
struct em28xx_fh *fh = q->priv_data;
struct em28xx *dev = fh->dev;
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
int rc = 0;
unsigned long size;
buf->vb.size = dev->vbi_width * dev->vbi_height * 2;
size = dev->vbi_width * dev->vbi_height * 2;
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
if (vb2_plane_size(vb, 0) < size) {
printk(KERN_INFO "%s data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0), size);
return -EINVAL;
buf->vb.width = dev->vbi_width;
buf->vb.height = dev->vbi_height;
buf->vb.field = field;
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
rc = videobuf_iolock(q, &buf->vb, NULL);
if (rc < 0)
goto fail;
}
vb2_set_plane_payload(&buf->vb, 0, size);
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
free_buffer(q, buf);
return rc;
}
static void
vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
{
struct em28xx_buffer *buf = container_of(vb,
struct em28xx_buffer,
vb);
struct em28xx_fh *fh = vq->priv_data;
struct em28xx *dev = fh->dev;
struct em28xx_dmaqueue *vbiq = &dev->vbiq;
buf->vb.state = VIDEOBUF_QUEUED;
list_add_tail(&buf->vb.queue, &vbiq->active);
}
static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
vbi_buffer_queue(struct vb2_buffer *vb)
{
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
free_buffer(q, buf);
struct em28xx_dmaqueue *vbiq = &dev->vbiq;
unsigned long flags = 0;
buf->mem = vb2_plane_vaddr(vb, 0);
buf->length = vb2_plane_size(vb, 0);
spin_lock_irqsave(&dev->slock, flags);
list_add_tail(&buf->list, &vbiq->active);
spin_unlock_irqrestore(&dev->slock, flags);
}
struct videobuf_queue_ops em28xx_vbi_qops = {
.buf_setup = vbi_setup,
.buf_prepare = vbi_prepare,
.buf_queue = vbi_queue,
.buf_release = vbi_release,
struct vb2_ops em28xx_vbi_qops = {
.queue_setup = vbi_queue_setup,
.buf_prepare = vbi_buffer_prepare,
.buf_queue = vbi_buffer_queue,
.start_streaming = em28xx_start_analog_streaming,
.stop_streaming = em28xx_stop_vbi_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
drivers/media/usb/em28xx/em28xx-video.c
View file @ d3829fad
......@@ -76,9 +76,9 @@ MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_VERSION(EM28XX_VERSION);
static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
module_param_array(video_nr, int, NULL, 0444);
module_param_array(vbi_nr, int, NULL, 0444);
......@@ -136,12 +136,13 @@ static struct em28xx_fmt format[] = {
static inline void finish_buffer(struct em28xx *dev,
struct em28xx_buffer *buf)
{
em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.i);
buf->vb.state = VIDEOBUF_DONE;
buf->vb.field_count++;
v4l2_get_timestamp(&buf->vb.ts);
list_del(&buf->vb.queue);
wake_up(&buf->vb.done);
em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field);
buf->vb.v4l2_buf.sequence = dev->field_count++;
buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_DONE);
}
/*
......@@ -156,8 +157,8 @@ static void em28xx_copy_video(struct em28xx *dev,
int linesdone, currlinedone, offset, lencopy, remain;
int bytesperline = dev->width << 1;
if (buf->pos + len > buf->vb.size)
len = buf->vb.size - buf->pos;
if (buf->pos + len > buf->length)
len = buf->length - buf->pos;
startread = usb_buf;
remain = len;
......@@ -179,11 +180,11 @@ static void em28xx_copy_video(struct em28xx *dev,
lencopy = bytesperline - currlinedone;
lencopy = lencopy > remain ? remain : lencopy;
if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->vb.size) {
if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) {
em28xx_isocdbg("Overflow of %zi bytes past buffer end (1)\n",
((char *)startwrite + lencopy) -
((char *)buf->vb_buf + buf->vb.size));
remain = (char *)buf->vb_buf + buf->vb.size -
((char *)buf->vb_buf + buf->length));
remain = (char *)buf->vb_buf + buf->length -
(char *)startwrite;
lencopy = remain;
}
......@@ -205,13 +206,13 @@ static void em28xx_copy_video(struct em28xx *dev,
lencopy = bytesperline;
if ((char *)startwrite + lencopy > (char *)buf->vb_buf +
buf->vb.size) {
buf->length) {
em28xx_isocdbg("Overflow of %zi bytes past buffer end"
"(2)\n",
((char *)startwrite + lencopy) -
((char *)buf->vb_buf + buf->vb.size));
lencopy = remain = (char *)buf->vb_buf + buf->vb.size -
(char *)startwrite;
((char *)buf->vb_buf + buf->length));
lencopy = remain = (char *)buf->vb_buf + buf->length -
(char *)startwrite;
}
if (lencopy <= 0)
break;
......@@ -234,8 +235,8 @@ static void em28xx_copy_vbi(struct em28xx *dev,
{
unsigned int offset;
if (buf->pos + len > buf->vb.size)
len = buf->vb.size - buf->pos;
if (buf->pos + len > buf->length)
len = buf->length - buf->pos;
offset = buf->pos;
/* Make sure the bottom field populates the second half of the frame */
......@@ -292,7 +293,6 @@ static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
struct em28xx_dmaqueue *dma_q)
{
struct em28xx_buffer *buf;
char *outp;
if (list_empty(&dma_q->active)) {
em28xx_isocdbg("No active queue to serve\n");
......@@ -300,12 +300,11 @@ static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev,
}
/* Get the next buffer */
buf = list_entry(dma_q->active.next, struct em28xx_buffer, vb.queue);
buf = list_entry(dma_q->active.next, struct em28xx_buffer, list);
/* Cleans up buffer - Useful for testing for frame/URB loss */
outp = videobuf_to_vmalloc(&buf->vb);
memset(outp, 0, buf->vb.size);
list_del(&buf->list);
buf->pos = 0;
buf->vb_buf = outp;
buf->vb_buf = buf->mem;
return buf;
}
......@@ -467,92 +466,118 @@ static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb)
}
static int get_ressource(enum v4l2_buf_type f_type)
{
switch (f_type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return EM28XX_RESOURCE_VIDEO;
case V4L2_BUF_TYPE_VBI_CAPTURE:
return EM28XX_RESOURCE_VBI;
default:
BUG();
return 0;
}
}
/* Usage lock check functions */
static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type)
{
int res_type = get_ressource(f_type);
/* is it free? */
if (dev->resources & res_type) {
/* no, someone else uses it */
return -EBUSY;
}
/* it's free, grab it */
dev->resources |= res_type;
em28xx_videodbg("res: get %d\n", res_type);
return 0;
}
static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type)
{
int res_type = get_ressource(f_type);
dev->resources &= ~res_type;
em28xx_videodbg("res: put %d\n", res_type);
}
/* ------------------------------------------------------------------
Videobuf operations
Videobuf2 operations
------------------------------------------------------------------*/
static int
buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], void *alloc_ctxs[])
{
struct em28xx_fh *fh = vq->priv_data;
struct em28xx *dev = fh->dev;
struct v4l2_frequency f;
*size = (fh->dev->width * fh->dev->height * dev->format->depth + 7)
>> 3;
struct em28xx *dev = vb2_get_drv_priv(vq);
unsigned long size;
if (0 == *count)
*count = EM28XX_DEF_BUF;
if (fmt)
size = fmt->fmt.pix.sizeimage;
else
size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
if (*count < EM28XX_MIN_BUF)
*count = EM28XX_MIN_BUF;
if (size == 0)
return -EINVAL;
/* Ask tuner to go to analog or radio mode */
memset(&f, 0, sizeof(f));
f.frequency = dev->ctl_freq;
f.type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
if (0 == *nbuffers)
*nbuffers = 32;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
*nplanes = 1;
sizes[0] = size;
return 0;
}
/* This is called *without* dev->slock held; please keep it that way */
static void free_buffer(struct videobuf_queue *vq, struct em28xx_buffer *buf)
static int
buffer_prepare(struct vb2_buffer *vb)
{
struct em28xx_fh *fh = vq->priv_data;
struct em28xx *dev = fh->dev;
unsigned long flags = 0;
if (in_interrupt())
BUG();
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
unsigned long size;
/* We used to wait for the buffer to finish here, but this didn't work
because, as we were keeping the state as VIDEOBUF_QUEUED,
videobuf_queue_cancel marked it as finished for us.
(Also, it could wedge forever if the hardware was misconfigured.)
em28xx_videodbg("%s, field=%d\n", __func__, vb->v4l2_buf.field);
This should be safe; by the time we get here, the buffer isn't
queued anymore. If we ever start marking the buffers as
VIDEOBUF_ACTIVE, it won't be, though.
*/
spin_lock_irqsave(&dev->slock, flags);
if (dev->usb_ctl.vid_buf == buf)
dev->usb_ctl.vid_buf = NULL;
spin_unlock_irqrestore(&dev->slock, flags);
size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
videobuf_vmalloc_free(&buf->vb);
buf->vb.state = VIDEOBUF_NEEDS_INIT;
if (vb2_plane_size(vb, 0) < size) {
em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0), size);
return -EINVAL;
}
vb2_set_plane_payload(&buf->vb, 0, size);
return 0;
}
static int
buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
enum v4l2_field field)
int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)
{
struct em28xx_fh *fh = vq->priv_data;
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
struct em28xx *dev = fh->dev;
int rc = 0, urb_init = 0;
struct em28xx *dev = vb2_get_drv_priv(vq);
struct v4l2_frequency f;
int rc = 0;
buf->vb.size = (fh->dev->width * fh->dev->height * dev->format->depth
+ 7) >> 3;
em28xx_videodbg("%s\n", __func__);
if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
/* Make sure streaming is not already in progress for this type
of filehandle (e.g. video, vbi) */
rc = res_get(dev, vq->type);
if (rc)
return rc;
buf->vb.width = dev->width;
buf->vb.height = dev->height;
buf->vb.field = field;
if (dev->streaming_users++ == 0) {
/* First active streaming user, so allocate all the URBs */
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
rc = videobuf_iolock(vq, &buf->vb, NULL);
if (rc < 0)
goto fail;
}
/* Allocate the USB bandwidth */
em28xx_set_alternate(dev);
if (!dev->usb_ctl.analog_bufs.num_bufs)
urb_init = 1;
/* Needed, since GPIO might have disabled power of
some i2c device
*/
em28xx_wake_i2c(dev);
if (urb_init) {
dev->capture_type = -1;
rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE,
dev->analog_xfer_bulk,
......@@ -562,52 +587,144 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
em28xx_urb_data_copy);
if (rc < 0)
goto fail;
}
buf->vb.state = VIDEOBUF_PREPARED;
return 0;
/*
* djh: it's not clear whether this code is still needed. I'm
* leaving it in here for now entirely out of concern for
* backward compatibility (the old code did it)
*/
/* Ask tuner to go to analog or radio mode */
memset(&f, 0, sizeof(f));
f.frequency = dev->ctl_freq;
if (vq->owner && vq->owner->vdev->vfl_type == VFL_TYPE_RADIO)
f.type = V4L2_TUNER_RADIO;
else
f.type = V4L2_TUNER_ANALOG_TV;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, &f);
}
fail:
free_buffer(vq, buf);
return rc;
}
static void
buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
int em28xx_stop_streaming(struct vb2_queue *vq)
{
struct em28xx *dev = vb2_get_drv_priv(vq);
struct em28xx_dmaqueue *vidq = &dev->vidq;
unsigned long flags = 0;
em28xx_videodbg("%s\n", __func__);
res_free(dev, vq->type);
if (dev->streaming_users-- == 1) {
/* Last active user, so shutdown all the URBS */
em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
}
spin_lock_irqsave(&dev->slock, flags);
while (!list_empty(&vidq->active)) {
struct em28xx_buffer *buf;
buf = list_entry(vidq->active.next, struct em28xx_buffer, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
}
dev->usb_ctl.vid_buf = NULL;
spin_unlock_irqrestore(&dev->slock, flags);
return 0;
}
int em28xx_stop_vbi_streaming(struct vb2_queue *vq)
{
struct em28xx_buffer *buf = container_of(vb,
struct em28xx_buffer,
vb);
struct em28xx_fh *fh = vq->priv_data;
struct em28xx *dev = fh->dev;
struct em28xx_dmaqueue *vidq = &dev->vidq;
struct em28xx *dev = vb2_get_drv_priv(vq);
struct em28xx_dmaqueue *vbiq = &dev->vbiq;
unsigned long flags = 0;
em28xx_videodbg("%s\n", __func__);
res_free(dev, vq->type);
buf->vb.state = VIDEOBUF_QUEUED;
list_add_tail(&buf->vb.queue, &vidq->active);
if (dev->streaming_users-- == 1) {
/* Last active user, so shutdown all the URBS */
em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
}
spin_lock_irqsave(&dev->slock, flags);
while (!list_empty(&vbiq->active)) {
struct em28xx_buffer *buf;
buf = list_entry(vbiq->active.next, struct em28xx_buffer, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
}
dev->usb_ctl.vbi_buf = NULL;
spin_unlock_irqrestore(&dev->slock, flags);
return 0;
}
static void buffer_release(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
static void
buffer_queue(struct vb2_buffer *vb)
{
struct em28xx_buffer *buf = container_of(vb,
struct em28xx_buffer,
vb);
struct em28xx_fh *fh = vq->priv_data;
struct em28xx *dev = (struct em28xx *)fh->dev;
struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue);
struct em28xx_buffer *buf = container_of(vb, struct em28xx_buffer, vb);
struct em28xx_dmaqueue *vidq = &dev->vidq;
unsigned long flags = 0;
em28xx_isocdbg("em28xx: called buffer_release\n");
em28xx_videodbg("%s\n", __func__);
buf->mem = vb2_plane_vaddr(vb, 0);
buf->length = vb2_plane_size(vb, 0);
free_buffer(vq, buf);
spin_lock_irqsave(&dev->slock, flags);
list_add_tail(&buf->list, &vidq->active);
spin_unlock_irqrestore(&dev->slock, flags);
}
static struct videobuf_queue_ops em28xx_video_qops = {
.buf_setup = buffer_setup,
static struct vb2_ops em28xx_video_qops = {
.queue_setup = queue_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
.start_streaming = em28xx_start_analog_streaming,
.stop_streaming = em28xx_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
int em28xx_vb2_setup(struct em28xx *dev)
{
int rc;
struct vb2_queue *q;
/* Setup Videobuf2 for Video capture */
q = &dev->vb_vidq;
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
q->drv_priv = dev;
q->buf_struct_size = sizeof(struct em28xx_buffer);
q->ops = &em28xx_video_qops;
q->mem_ops = &vb2_vmalloc_memops;
rc = vb2_queue_init(q);
if (rc < 0)
return rc;
/* Setup Videobuf2 for VBI capture */
q = &dev->vb_vbiq;
q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
q->drv_priv = dev;
q->buf_struct_size = sizeof(struct em28xx_buffer);
q->ops = &em28xx_vbi_qops;
q->mem_ops = &vb2_vmalloc_memops;
rc = vb2_queue_init(q);
if (rc < 0)
return rc;
return 0;
}
/********************* v4l2 interface **************************************/
static void video_mux(struct em28xx *dev, int index)
......@@ -640,61 +757,6 @@ static void video_mux(struct em28xx *dev, int index)
em28xx_audio_analog_set(dev);
}
/* Usage lock check functions */
static int res_get(struct em28xx_fh *fh, unsigned int bit)
{
struct em28xx *dev = fh->dev;
if (fh->resources & bit)
/* have it already allocated */
return 1;
/* is it free? */
if (dev->resources & bit) {
/* no, someone else uses it */
return 0;
}
/* it's free, grab it */
fh->resources |= bit;
dev->resources |= bit;
em28xx_videodbg("res: get %d\n", bit);
return 1;
}
static int res_check(struct em28xx_fh *fh, unsigned int bit)
{
return fh->resources & bit;
}
static int res_locked(struct em28xx *dev, unsigned int bit)
{
return dev->resources & bit;
}
static void res_free(struct em28xx_fh *fh, unsigned int bits)
{
struct em28xx *dev = fh->dev;
BUG_ON((fh->resources & bits) != bits);
fh->resources &= ~bits;
dev->resources &= ~bits;
em28xx_videodbg("res: put %d\n", bits);
}
static int get_ressource(struct em28xx_fh *fh)
{
switch (fh->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
return EM28XX_RESOURCE_VIDEO;
case V4L2_BUF_TYPE_VBI_CAPTURE:
return EM28XX_RESOURCE_VBI;
default:
BUG();
return 0;
}
}
void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
{
struct em28xx *dev = priv;
......@@ -828,8 +890,11 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
/* the em2800 can only scale down to 50% */
height = height > (3 * maxh / 4) ? maxh : maxh / 2;
width = width > (3 * maxw / 4) ? maxw : maxw / 2;
/* MaxPacketSize for em2800 is too small to capture at full resolution
* use half of maxw as the scaler can only scale to 50% */
/*
* MaxPacketSize for em2800 is too small to capture at full
* resolution use half of maxw as the scaler can only scale
* to 50%
*/
if (width == maxw && height == maxh)
width /= 2;
} else {
......@@ -875,7 +940,6 @@ static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
/* set new image size */
get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale);
em28xx_set_alternate(dev);
em28xx_resolution_set(dev);
return 0;
......@@ -884,21 +948,13 @@ static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc,
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
int rc;
struct em28xx *dev = video_drvdata(file);
rc = check_dev(dev);
if (rc < 0)
return rc;
if (dev->streaming_users > 0)
return -EBUSY;
vidioc_try_fmt_vid_cap(file, priv, f);
if (videobuf_queue_is_busy(&fh->vb_vidq)) {
em28xx_errdev("%s queue busy\n", __func__);
return -EBUSY;
}
return em28xx_set_video_format(dev, f->fmt.pix.pixelformat,
f->fmt.pix.width, f->fmt.pix.height);
}
......@@ -952,10 +1008,8 @@ static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
if (rc < 0)
return rc;
if (videobuf_queue_is_busy(&fh->vb_vidq)) {
em28xx_errdev("%s queue busy\n", __func__);
if (dev->streaming_users > 0)
return -EBUSY;
}
dev->norm = *norm;
......@@ -1358,69 +1412,6 @@ static int vidioc_cropcap(struct file *file, void *priv,
return 0;
}
static int vidioc_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
int rc = -EINVAL;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (unlikely(type != fh->type))
return -EINVAL;
em28xx_videodbg("vidioc_streamon fh=%p t=%d fh->res=%d dev->res=%d\n",
fh, type, fh->resources, dev->resources);
if (unlikely(!res_get(fh, get_ressource(fh))))
return -EBUSY;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
rc = videobuf_streamon(&fh->vb_vidq);
else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
rc = videobuf_streamon(&fh->vb_vbiq);
return rc;
}
static int vidioc_streamoff(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
fh->type != V4L2_BUF_TYPE_VBI_CAPTURE)
return -EINVAL;
if (type != fh->type)
return -EINVAL;
em28xx_videodbg("vidioc_streamoff fh=%p t=%d fh->res=%d dev->res=%d\n",
fh, type, fh->resources, dev->resources);
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
videobuf_streamoff(&fh->vb_vidq);
res_free(fh, EM28XX_RESOURCE_VIDEO);
}
} else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
if (res_check(fh, EM28XX_RESOURCE_VBI)) {
videobuf_streamoff(&fh->vb_vbiq);
res_free(fh, EM28XX_RESOURCE_VBI);
}
}
return 0;
}
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
......@@ -1566,83 +1557,6 @@ static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,
return 0;
}
static int vidioc_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
return videobuf_reqbufs(&fh->vb_vidq, rb);
else
return videobuf_reqbufs(&fh->vb_vbiq, rb);
}
static int vidioc_querybuf(struct file *file, void *priv,
struct v4l2_buffer *b)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
return videobuf_querybuf(&fh->vb_vidq, b);
else {
/* FIXME: I'm not sure yet whether this is a bug in zvbi or
the videobuf framework, but we probably shouldn't be
returning a buffer larger than that which was asked for.
At a minimum, it causes a crash in zvbi since it does
a memcpy based on the source buffer length */
int result = videobuf_querybuf(&fh->vb_vbiq, b);
b->length = dev->vbi_width * dev->vbi_height * 2;
return result;
}
}
static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
return videobuf_qbuf(&fh->vb_vidq, b);
else
return videobuf_qbuf(&fh->vb_vbiq, b);
}
static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
{
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
return videobuf_dqbuf(&fh->vb_vidq, b, file->f_flags &
O_NONBLOCK);
else
return videobuf_dqbuf(&fh->vb_vbiq, b, file->f_flags &
O_NONBLOCK);
}
/* ----------------------------------------------------------- */
/* RADIO ESPECIFIC IOCTLS */
/* ----------------------------------------------------------- */
......@@ -1682,12 +1596,10 @@ static int radio_s_tuner(struct file *file, void *priv,
*/
static int em28xx_v4l2_open(struct file *filp)
{
int errCode = 0, radio = 0;
struct video_device *vdev = video_devdata(filp);
struct em28xx *dev = video_drvdata(filp);
enum v4l2_buf_type fh_type = 0;
struct em28xx_fh *fh;
enum v4l2_field field;
switch (vdev->vfl_type) {
case VFL_TYPE_GRABBER:
......@@ -1696,9 +1608,6 @@ static int em28xx_v4l2_open(struct file *filp)
case VFL_TYPE_VBI:
fh_type = V4L2_BUF_TYPE_VBI_CAPTURE;
break;
case VFL_TYPE_RADIO:
radio = 1;
break;
}
em28xx_videodbg("open dev=%s type=%s users=%d\n",
......@@ -1716,13 +1625,11 @@ static int em28xx_v4l2_open(struct file *filp)
}
v4l2_fh_init(&fh->fh, vdev);
fh->dev = dev;
fh->radio = radio;
fh->type = fh_type;
filp->private_data = fh;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) {
em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
em28xx_set_alternate(dev);
em28xx_resolution_set(dev);
/* Needed, since GPIO might have disabled power of
......@@ -1731,32 +1638,18 @@ static int em28xx_v4l2_open(struct file *filp)
em28xx_wake_i2c(dev);
}
if (fh->radio) {
if (vdev->vfl_type == VFL_TYPE_RADIO) {
em28xx_videodbg("video_open: setting radio device\n");
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_radio);
}
dev->users++;
if (dev->progressive)
field = V4L2_FIELD_NONE;
else
field = V4L2_FIELD_INTERLACED;
videobuf_queue_vmalloc_init(&fh->vb_vidq, &em28xx_video_qops,
NULL, &dev->slock,
V4L2_BUF_TYPE_VIDEO_CAPTURE, field,
sizeof(struct em28xx_buffer), fh, &dev->lock);
videobuf_queue_vmalloc_init(&fh->vb_vbiq, &em28xx_vbi_qops,
NULL, &dev->slock,
V4L2_BUF_TYPE_VBI_CAPTURE,
V4L2_FIELD_SEQ_TB,
sizeof(struct em28xx_buffer), fh, &dev->lock);
mutex_unlock(&dev->lock);
v4l2_fh_add(&fh->fh);
return errCode;
return 0;
}
/*
......@@ -1810,15 +1703,7 @@ static int em28xx_v4l2_close(struct file *filp)
em28xx_videodbg("users=%d\n", dev->users);
mutex_lock(&dev->lock);
if (res_check(fh, EM28XX_RESOURCE_VIDEO)) {
videobuf_stop(&fh->vb_vidq);
res_free(fh, EM28XX_RESOURCE_VIDEO);
}
if (res_check(fh, EM28XX_RESOURCE_VBI)) {
videobuf_stop(&fh->vb_vbiq);
res_free(fh, EM28XX_RESOURCE_VBI);
}
vb2_fop_release(filp);
if (dev->users == 1) {
/* the device is already disconnect,
......@@ -1828,7 +1713,6 @@ static int em28xx_v4l2_close(struct file *filp)
kfree(dev->alt_max_pkt_size_isoc);
mutex_unlock(&dev->lock);
kfree(dev);
kfree(fh);
return 0;
}
......@@ -1836,7 +1720,6 @@ static int em28xx_v4l2_close(struct file *filp)
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_power, 0);
/* do this before setting alternate! */
em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
em28xx_set_mode(dev, EM28XX_SUSPEND);
/* set alternate 0 */
......@@ -1848,141 +1731,19 @@ static int em28xx_v4l2_close(struct file *filp)
"0 (error=%i)\n", errCode);
}
}
v4l2_fh_del(&fh->fh);
v4l2_fh_exit(&fh->fh);
videobuf_mmap_free(&fh->vb_vidq);
videobuf_mmap_free(&fh->vb_vbiq);
kfree(fh);
dev->users--;
mutex_unlock(&dev->lock);
return 0;
}
/*
* em28xx_v4l2_read()
* will allocate buffers when called for the first time
*/
static ssize_t
em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
loff_t *pos)
{
struct em28xx_fh *fh = filp->private_data;
struct em28xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
/* FIXME: read() is not prepared to allow changing the video
resolution while streaming. Seems a bug at em28xx_set_fmt
*/
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
if (res_locked(dev, EM28XX_RESOURCE_VIDEO))
rc = -EBUSY;
else
rc = videobuf_read_stream(&fh->vb_vidq, buf, count, pos, 0,
filp->f_flags & O_NONBLOCK);
} else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
if (!res_get(fh, EM28XX_RESOURCE_VBI))
rc = -EBUSY;
else
rc = videobuf_read_stream(&fh->vb_vbiq, buf, count, pos, 0,
filp->f_flags & O_NONBLOCK);
}
mutex_unlock(&dev->lock);
return rc;
}
/*
* em28xx_poll()
* will allocate buffers when called for the first time
*/
static unsigned int em28xx_poll(struct file *filp, poll_table *wait)
{
struct em28xx_fh *fh = filp->private_data;
unsigned long req_events = poll_requested_events(wait);
struct em28xx *dev = fh->dev;
unsigned int res = 0;
int rc;
rc = check_dev(dev);
if (rc < 0)
return DEFAULT_POLLMASK;
if (v4l2_event_pending(&fh->fh))
res = POLLPRI;
else if (req_events & POLLPRI)
poll_wait(filp, &fh->fh.wait, wait);
if (req_events & (POLLIN | POLLRDNORM)) {
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
if (!res_get(fh, EM28XX_RESOURCE_VIDEO))
return res | POLLERR;
return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
}
if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
if (!res_get(fh, EM28XX_RESOURCE_VBI))
return res | POLLERR;
return res | videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
}
}
return res;
}
static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table *wait)
{
struct em28xx_fh *fh = filp->private_data;
struct em28xx *dev = fh->dev;
unsigned int res;
mutex_lock(&dev->lock);
res = em28xx_poll(filp, wait);
mutex_unlock(&dev->lock);
return res;
}
/*
* em28xx_v4l2_mmap()
*/
static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
{
struct em28xx_fh *fh = filp->private_data;
struct em28xx *dev = fh->dev;
int rc;
rc = check_dev(dev);
if (rc < 0)
return rc;
if (mutex_lock_interruptible(&dev->lock))
return -ERESTARTSYS;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
rc = videobuf_mmap_mapper(&fh->vb_vidq, vma);
else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE)
rc = videobuf_mmap_mapper(&fh->vb_vbiq, vma);
mutex_unlock(&dev->lock);
em28xx_videodbg("vma start=0x%08lx, size=%ld, ret=%d\n",
(unsigned long)vma->vm_start,
(unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
rc);
return rc;
}
static const struct v4l2_file_operations em28xx_v4l_fops = {
.owner = THIS_MODULE,
.open = em28xx_v4l2_open,
.release = em28xx_v4l2_close,
.read = em28xx_v4l2_read,
.poll = em28xx_v4l2_poll,
.mmap = em28xx_v4l2_mmap,
.read = vb2_fop_read,
.poll = vb2_fop_poll,
.mmap = vb2_fop_mmap,
.unlocked_ioctl = video_ioctl2,
};
......@@ -2000,10 +1761,13 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_s_audio = vidioc_s_audio,
.vidioc_cropcap = vidioc_cropcap,
.vidioc_reqbufs = vidioc_reqbufs,
.vidioc_querybuf = vidioc_querybuf,
.vidioc_qbuf = vidioc_qbuf,
.vidioc_dqbuf = vidioc_dqbuf,
.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_g_std = vidioc_g_std,
.vidioc_querystd = vidioc_querystd,
.vidioc_s_std = vidioc_s_std,
......@@ -2012,8 +1776,8 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
.vidioc_streamon = vidioc_streamon,
.vidioc_streamoff = vidioc_streamoff,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_g_tuner = vidioc_g_tuner,
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
......@@ -2029,7 +1793,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
static const struct video_device em28xx_video_template = {
.fops = &em28xx_v4l_fops,
.release = video_device_release,
.release = video_device_release_empty,
.ioctl_ops = &video_ioctl_ops,
.tvnorms = V4L2_STD_ALL,
......@@ -2078,7 +1842,6 @@ static struct video_device *em28xx_vdev_init(struct em28xx *dev,
*vfd = *template;
vfd->v4l2_dev = &dev->v4l2_dev;
vfd->release = video_device_release;
vfd->debug = video_debug;
vfd->lock = &dev->lock;
set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
......@@ -2110,10 +1873,10 @@ int em28xx_register_analog_devices(struct em28xx *dev)
dev->format = &format[0];
maxw = norm_maxw(dev);
/* MaxPacketSize for em2800 is too small to capture at full resolution
* use half of maxw as the scaler can only scale to 50% */
if (dev->board.is_em2800)
maxw /= 2;
/* MaxPacketSize for em2800 is too small to capture at full resolution
* use half of maxw as the scaler can only scale to 50% */
if (dev->board.is_em2800)
maxw /= 2;
em28xx_set_video_format(dev, format[0].fourcc,
maxw, norm_maxh(dev));
......@@ -2139,6 +1902,8 @@ int em28xx_register_analog_devices(struct em28xx *dev)
em28xx_errdev("cannot allocate video_device.\n");
return -ENODEV;
}
dev->vdev->queue = &dev->vb_vidq;
dev->vdev->queue->lock = &dev->vb_queue_lock;
/* register v4l2 video video_device */
ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
......@@ -2154,6 +1919,9 @@ int em28xx_register_analog_devices(struct em28xx *dev)
dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template,
"vbi");
dev->vbi_dev->queue = &dev->vb_vbiq;
dev->vbi_dev->queue->lock = &dev->vb_vbi_queue_lock;
/* register v4l2 vbi video_device */
ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
vbi_nr[dev->devno]);
......
drivers/media/usb/em28xx/em28xx.h
View file @ d3829fad
......@@ -31,15 +31,12 @@
#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <media/videobuf-vmalloc.h>
#include <media/videobuf2-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/ir-kbd-i2c.h>
#include <media/rc-core.h>
#if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
#include <media/videobuf-dvb.h>
#endif
#include "tuner-xc2028.h"
#include "xc5000.h"
#include "em28xx-reg.h"
......@@ -252,8 +249,11 @@ struct em28xx_fmt {
/* buffer for one video frame */
struct em28xx_buffer {
/* common v4l buffer stuff -- must be first */
struct videobuf_buffer vb;
struct vb2_buffer vb;
struct list_head list;
void *mem;
unsigned int length;
int top_field;
/* counter to control buffer fill */
......@@ -480,11 +480,6 @@ struct em28xx;
struct em28xx_fh {
struct v4l2_fh fh;
struct em28xx *dev;
int radio;
unsigned int resources;
struct videobuf_queue vb_vidq;
struct videobuf_queue vb_vbiq;
enum v4l2_buf_type type;
};
......@@ -545,6 +540,7 @@ struct em28xx {
struct i2c_client i2c_client;
/* video for linux */
int users; /* user count for exclusive use */
int streaming_users; /* Number of actively streaming users */
struct video_device *vdev; /* video for linux device struct */
v4l2_std_id norm; /* selected tv norm */
int ctl_freq; /* selected frequency */
......@@ -587,6 +583,12 @@ struct em28xx {
struct video_device *vbi_dev;
struct video_device *radio_dev;
/* Videobuf2 */
struct vb2_queue vb_vidq;
struct vb2_queue vb_vbiq;
struct mutex vb_queue_lock;
struct mutex vb_vbi_queue_lock;
/* resources in use */
unsigned int resources;
......@@ -598,6 +600,9 @@ struct em28xx {
struct em28xx_usb_ctl usb_ctl;
spinlock_t slock;
unsigned int field_count;
unsigned int vbi_field_count;
/* usb transfer */
struct usb_device *udev; /* the usb device */
u8 analog_ep_isoc; /* address of isoc endpoint for analog */
......@@ -709,9 +714,12 @@ void em28xx_init_extension(struct em28xx *dev);
void em28xx_close_extension(struct em28xx *dev);
/* Provided by em28xx-video.c */
int em28xx_vb2_setup(struct em28xx *dev);
int em28xx_register_analog_devices(struct em28xx *dev);
void em28xx_release_analog_resources(struct em28xx *dev);
void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv);
int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count);
int em28xx_stop_vbi_streaming(struct vb2_queue *vq);
extern const struct v4l2_ctrl_ops em28xx_ctrl_ops;
/* Provided by em28xx-cards.c */
......@@ -723,7 +731,7 @@ int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
void em28xx_release_resources(struct em28xx *dev);
/* Provided by em28xx-vbi.c */
extern struct videobuf_queue_ops em28xx_vbi_qops;
extern struct vb2_ops em28xx_vbi_qops;
/* printk macros */
......
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