[media] bttv: add support for control events
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
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01df530c27
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@ -49,6 +49,7 @@
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#include "bttvp.h"
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/tvaudio.h>
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#include <media/msp3400.h>
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@ -2999,34 +3000,43 @@ static unsigned int bttv_poll(struct file *file, poll_table *wait)
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struct bttv_fh *fh = file->private_data;
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struct bttv_buffer *buf;
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enum v4l2_field field;
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unsigned int rc = POLLERR;
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unsigned int rc = 0;
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unsigned long req_events = poll_requested_events(wait);
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if (v4l2_event_pending(&fh->fh))
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rc = POLLPRI;
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else if (req_events & POLLPRI)
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poll_wait(file, &fh->fh.wait, wait);
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if (!(req_events & (POLLIN | POLLRDNORM)))
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return rc;
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if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
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if (!check_alloc_btres_lock(fh->btv,fh,RESOURCE_VBI))
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return POLLERR;
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return videobuf_poll_stream(file, &fh->vbi, wait);
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return rc | POLLERR;
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return rc | videobuf_poll_stream(file, &fh->vbi, wait);
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}
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if (check_btres(fh,RESOURCE_VIDEO_STREAM)) {
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/* streaming capture */
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if (list_empty(&fh->cap.stream))
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goto err;
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return rc | POLLERR;
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buf = list_entry(fh->cap.stream.next,struct bttv_buffer,vb.stream);
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} else {
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/* read() capture */
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if (NULL == fh->cap.read_buf) {
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/* need to capture a new frame */
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if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM))
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goto err;
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return rc | POLLERR;
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fh->cap.read_buf = videobuf_sg_alloc(fh->cap.msize);
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if (NULL == fh->cap.read_buf)
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goto err;
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return rc | POLLERR;
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fh->cap.read_buf->memory = V4L2_MEMORY_USERPTR;
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field = videobuf_next_field(&fh->cap);
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if (0 != fh->cap.ops->buf_prepare(&fh->cap,fh->cap.read_buf,field)) {
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kfree (fh->cap.read_buf);
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fh->cap.read_buf = NULL;
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goto err;
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return rc | POLLERR;
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}
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fh->cap.ops->buf_queue(&fh->cap,fh->cap.read_buf);
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fh->cap.read_off = 0;
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@ -3037,10 +3047,7 @@ static unsigned int bttv_poll(struct file *file, poll_table *wait)
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poll_wait(file, &buf->vb.done, wait);
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if (buf->vb.state == VIDEOBUF_DONE ||
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buf->vb.state == VIDEOBUF_ERROR)
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rc = POLLIN|POLLRDNORM;
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else
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rc = 0;
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err:
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rc = rc | POLLIN|POLLRDNORM;
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return rc;
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}
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@ -3073,6 +3080,7 @@ static int bttv_open(struct file *file)
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file->private_data = fh;
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*fh = btv->init;
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v4l2_fh_init(&fh->fh, vdev);
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fh->type = type;
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fh->ov.setup_ok = 0;
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@ -3112,6 +3120,7 @@ static int bttv_open(struct file *file)
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bttv_vbi_fmt_reset(&fh->vbi_fmt, btv->tvnorm);
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bttv_field_count(btv);
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v4l2_fh_add(&fh->fh);
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return 0;
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}
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@ -3149,7 +3158,6 @@ static int bttv_release(struct file *file)
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videobuf_mmap_free(&fh->vbi);
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v4l2_prio_close(&btv->prio, fh->prio);
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file->private_data = NULL;
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kfree(fh);
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btv->users--;
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bttv_field_count(btv);
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@ -3157,6 +3165,9 @@ static int bttv_release(struct file *file)
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if (!btv->users)
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audio_mute(btv, btv->mute);
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v4l2_fh_del(&fh->fh);
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v4l2_fh_exit(&fh->fh);
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kfree(fh);
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return 0;
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}
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@ -3222,6 +3233,8 @@ static const struct v4l2_ioctl_ops bttv_ioctl_ops = {
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.vidioc_s_frequency = bttv_s_frequency,
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.vidioc_log_status = bttv_log_status,
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.vidioc_querystd = bttv_querystd,
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.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
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.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
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.vidioc_g_chip_ident = bttv_g_chip_ident,
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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.vidioc_g_register = bttv_g_register,
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@ -3334,10 +3347,17 @@ static unsigned int radio_poll(struct file *file, poll_table *wait)
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{
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struct bttv_fh *fh = file->private_data;
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struct bttv *btv = fh->btv;
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unsigned long req_events = poll_requested_events(wait);
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struct saa6588_command cmd;
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unsigned int res = 0;
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if (v4l2_event_pending(&fh->fh))
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res = POLLPRI;
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else if (req_events & POLLPRI)
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poll_wait(file, &fh->fh.wait, wait);
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cmd.instance = file;
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cmd.event_list = wait;
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cmd.result = -ENODEV;
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cmd.result = res;
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bttv_call_all(btv, core, ioctl, SAA6588_CMD_POLL, &cmd);
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return cmd.result;
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@ -3360,6 +3380,8 @@ static const struct v4l2_ioctl_ops radio_ioctl_ops = {
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.vidioc_s_tuner = radio_s_tuner,
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.vidioc_g_frequency = bttv_g_frequency,
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.vidioc_s_frequency = bttv_s_frequency,
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.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
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.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
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};
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static struct video_device radio_template = {
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@ -37,6 +37,7 @@
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#include <asm/io.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-fh.h>
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#include <media/videobuf-dma-sg.h>
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#include <media/tveeprom.h>
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#include <media/rc-core.h>
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@ -215,6 +216,9 @@ struct bttv_crop {
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};
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struct bttv_fh {
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/* This must be the first field in this struct */
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struct v4l2_fh fh;
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struct bttv *btv;
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int resources;
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#ifdef VIDIOC_G_PRIORITY
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