[media] saa7146: support control events and priority handling
Use v4l2_fh which gives you control events and priority handling for free. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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@ -198,7 +198,6 @@ static int fops_open(struct file *file)
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struct saa7146_dev *dev = video_drvdata(file);
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struct saa7146_fh *fh = NULL;
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int result = 0;
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enum v4l2_buf_type type;
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DEB_EE("file:%p, dev:%s\n", file, video_device_node_name(vdev));
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@ -227,7 +226,9 @@ static int fops_open(struct file *file)
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goto out;
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}
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file->private_data = fh;
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v4l2_fh_init(&fh->fh, vdev);
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file->private_data = &fh->fh;
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fh->dev = dev;
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if (vdev->vfl_type == VFL_TYPE_VBI) {
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@ -251,6 +252,7 @@ static int fops_open(struct file *file)
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}
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result = 0;
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v4l2_fh_add(&fh->fh);
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out:
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if (fh && result != 0) {
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kfree(fh);
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@ -280,6 +282,8 @@ static int fops_release(struct file *file)
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saa7146_video_uops.release(dev,file);
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}
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v4l2_fh_del(&fh->fh);
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v4l2_fh_exit(&fh->fh);
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module_put(dev->ext->module);
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file->private_data = NULL;
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kfree(fh);
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@ -322,12 +326,13 @@ static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait)
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struct saa7146_fh *fh = file->private_data;
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struct videobuf_buffer *buf = NULL;
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struct videobuf_queue *q;
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unsigned int res = v4l2_ctrl_poll(file, wait);
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DEB_EE("file:%p, poll:%p\n", file, wait);
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if (vdev->vfl_type == VFL_TYPE_VBI) {
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if( 0 == fh->vbi_q.streaming )
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return videobuf_poll_stream(file, &fh->vbi_q, wait);
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return res | videobuf_poll_stream(file, &fh->vbi_q, wait);
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q = &fh->vbi_q;
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} else {
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DEB_D("using video queue\n");
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@ -339,17 +344,17 @@ static unsigned int fops_poll(struct file *file, struct poll_table_struct *wait)
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if (!buf) {
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DEB_D("buf == NULL!\n");
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return POLLERR;
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return res | POLLERR;
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}
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poll_wait(file, &buf->done, wait);
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if (buf->state == VIDEOBUF_DONE || buf->state == VIDEOBUF_ERROR) {
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DEB_D("poll succeeded!\n");
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return POLLIN|POLLRDNORM;
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return res | POLLIN | POLLRDNORM;
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}
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DEB_D("nothing to poll for, buf->state:%d\n", buf->state);
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return 0;
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return res;
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}
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static ssize_t fops_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
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@ -583,6 +588,7 @@ int saa7146_register_device(struct video_device **vid, struct saa7146_dev* dev,
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vfd->lock = &dev->v4l2_lock;
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vfd->v4l2_dev = &dev->v4l2_dev;
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vfd->tvnorms = 0;
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set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags);
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for (i = 0; i < dev->ext_vv_data->num_stds; i++)
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vfd->tvnorms |= dev->ext_vv_data->stds[i].id;
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strlcpy(vfd->name, name, sizeof(vfd->name));
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@ -2,6 +2,8 @@
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#include <media/saa7146_vv.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-ctrls.h>
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#include <linux/module.h>
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static int max_memory = 32;
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@ -1021,6 +1023,8 @@ const struct v4l2_ioctl_ops saa7146_video_ioctl_ops = {
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.vidioc_streamon = vidioc_streamon,
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.vidioc_streamoff = vidioc_streamoff,
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.vidioc_g_parm = vidioc_g_parm,
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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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/*********************************************************************************/
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@ -3,6 +3,7 @@
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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-fh.h>
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#include <media/saa7146.h>
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#include <media/videobuf-dma-sg.h>
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@ -84,6 +85,8 @@ struct saa7146_overlay {
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/* per open data */
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struct saa7146_fh {
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/* Must be the first field! */
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struct v4l2_fh fh;
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struct saa7146_dev *dev;
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/* video capture */
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