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[media] em28xx: add support for control events

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Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-09-07 06:10:12 -03:00 committed by Mauro Carvalho Chehab
parent 69a61642ac
commit 50fdf40f69
1 changed files with 25 additions and 11 deletions
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36
drivers/media/usb/em28xx/em28xx-video.c
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@ -40,6 +40,7 @@
#include "em28xx.h"
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-event.h>
#include <media/v4l2-chip-ident.h>
#include <media/msp3400.h>
#include <media/tuner.h>
@ -1927,24 +1928,33 @@ em28xx_v4l2_read(struct file *filp, char __user *buf, size_t count,
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 rc;
return DEFAULT_POLLMASK;
if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
if (!res_get(fh, EM28XX_RESOURCE_VIDEO))
return POLLERR;
return videobuf_poll_stream(filp, &fh->vb_vidq, wait);
} else if (fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) {
if (!res_get(fh, EM28XX_RESOURCE_VBI))
return POLLERR;
return videobuf_poll_stream(filp, &fh->vb_vbiq, wait);
} else {
return POLLERR;
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)
@ -2032,6 +2042,8 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_s_tuner = vidioc_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,
@ -2061,6 +2073,8 @@ static const struct v4l2_ioctl_ops radio_ioctl_ops = {
.vidioc_s_tuner = radio_s_tuner,
.vidioc_g_frequency = vidioc_g_frequency,
.vidioc_s_frequency = vidioc_s_frequency,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = vidioc_g_register,
.vidioc_s_register = vidioc_s_register,