[media] c-qcam: convert to the latest frameworks
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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5fa1a89d37
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34caed8b3a
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@ -40,10 +40,14 @@
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#include <media/v4l2-device.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-fh.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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struct qcam {
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struct v4l2_device v4l2_dev;
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struct video_device vdev;
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struct v4l2_ctrl_handler hdl;
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struct pardevice *pdev;
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struct parport *pport;
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int width, height;
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@ -515,7 +519,8 @@ static int qcam_querycap(struct file *file, void *priv,
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strlcpy(vcap->driver, qcam->v4l2_dev.name, sizeof(vcap->driver));
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strlcpy(vcap->card, "Color Quickcam", sizeof(vcap->card));
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strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info));
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vcap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
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vcap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE;
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vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS;
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return 0;
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}
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@ -543,73 +548,6 @@ static int qcam_s_input(struct file *file, void *fh, unsigned int inp)
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return (inp > 0) ? -EINVAL : 0;
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}
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static int qcam_queryctrl(struct file *file, void *priv,
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struct v4l2_queryctrl *qc)
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{
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switch (qc->id) {
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case V4L2_CID_BRIGHTNESS:
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return v4l2_ctrl_query_fill(qc, 0, 255, 1, 240);
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case V4L2_CID_CONTRAST:
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return v4l2_ctrl_query_fill(qc, 0, 255, 1, 192);
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case V4L2_CID_GAMMA:
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return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128);
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}
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return -EINVAL;
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}
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static int qcam_g_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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{
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struct qcam *qcam = video_drvdata(file);
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int ret = 0;
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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ctrl->value = qcam->brightness;
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break;
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case V4L2_CID_CONTRAST:
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ctrl->value = qcam->contrast;
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break;
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case V4L2_CID_GAMMA:
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ctrl->value = qcam->whitebal;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int qcam_s_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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{
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struct qcam *qcam = video_drvdata(file);
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int ret = 0;
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mutex_lock(&qcam->lock);
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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qcam->brightness = ctrl->value;
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break;
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case V4L2_CID_CONTRAST:
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qcam->contrast = ctrl->value;
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break;
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case V4L2_CID_GAMMA:
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qcam->whitebal = ctrl->value;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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if (ret == 0) {
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parport_claim_or_block(qcam->pdev);
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qc_setup(qcam);
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parport_release(qcam->pdev);
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}
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mutex_unlock(&qcam->lock);
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return ret;
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}
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static int qcam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt)
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{
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struct qcam *qcam = video_drvdata(file);
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@ -713,8 +651,41 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
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return len;
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}
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static int qcam_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct qcam *qcam =
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container_of(ctrl->handler, struct qcam, hdl);
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int ret = 0;
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mutex_lock(&qcam->lock);
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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qcam->brightness = ctrl->val;
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break;
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case V4L2_CID_CONTRAST:
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qcam->contrast = ctrl->val;
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break;
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case V4L2_CID_GAMMA:
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qcam->whitebal = ctrl->val;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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if (ret == 0) {
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parport_claim_or_block(qcam->pdev);
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qc_setup(qcam);
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parport_release(qcam->pdev);
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}
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mutex_unlock(&qcam->lock);
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return ret;
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}
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static const struct v4l2_file_operations qcam_fops = {
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.owner = THIS_MODULE,
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.open = v4l2_fh_open,
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.release = v4l2_fh_release,
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.poll = v4l2_ctrl_poll,
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.unlocked_ioctl = video_ioctl2,
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.read = qcam_read,
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};
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@ -724,13 +695,17 @@ static const struct v4l2_ioctl_ops qcam_ioctl_ops = {
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.vidioc_g_input = qcam_g_input,
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.vidioc_s_input = qcam_s_input,
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.vidioc_enum_input = qcam_enum_input,
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.vidioc_queryctrl = qcam_queryctrl,
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.vidioc_g_ctrl = qcam_g_ctrl,
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.vidioc_s_ctrl = qcam_s_ctrl,
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.vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap,
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.vidioc_enum_fmt_vid_cap = qcam_enum_fmt_vid_cap,
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.vidioc_g_fmt_vid_cap = qcam_g_fmt_vid_cap,
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.vidioc_s_fmt_vid_cap = qcam_s_fmt_vid_cap,
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.vidioc_try_fmt_vid_cap = qcam_try_fmt_vid_cap,
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.vidioc_log_status = v4l2_ctrl_log_status,
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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 const struct v4l2_ctrl_ops qcam_ctrl_ops = {
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.s_ctrl = qcam_s_ctrl,
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};
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/* Initialize the QuickCam driver control structure. */
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@ -753,6 +728,20 @@ static struct qcam *qcam_init(struct parport *port)
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return NULL;
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}
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v4l2_ctrl_handler_init(&qcam->hdl, 3);
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v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
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V4L2_CID_BRIGHTNESS, 0, 255, 1, 240);
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v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
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V4L2_CID_CONTRAST, 0, 255, 1, 192);
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v4l2_ctrl_new_std(&qcam->hdl, &qcam_ctrl_ops,
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V4L2_CID_GAMMA, 0, 255, 1, 128);
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if (qcam->hdl.error) {
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v4l2_err(v4l2_dev, "couldn't register controls\n");
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v4l2_ctrl_handler_free(&qcam->hdl);
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kfree(qcam);
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return NULL;
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}
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qcam->pport = port;
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qcam->pdev = parport_register_device(port, "c-qcam", NULL, NULL,
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NULL, 0, NULL);
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@ -761,6 +750,7 @@ static struct qcam *qcam_init(struct parport *port)
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if (qcam->pdev == NULL) {
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v4l2_err(v4l2_dev, "couldn't register for %s.\n", port->name);
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v4l2_ctrl_handler_free(&qcam->hdl);
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kfree(qcam);
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return NULL;
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}
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@ -770,6 +760,8 @@ static struct qcam *qcam_init(struct parport *port)
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qcam->vdev.fops = &qcam_fops;
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qcam->vdev.ioctl_ops = &qcam_ioctl_ops;
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qcam->vdev.release = video_device_release_empty;
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qcam->vdev.ctrl_handler = &qcam->hdl;
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set_bit(V4L2_FL_USE_FH_PRIO, &qcam->vdev.flags);
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video_set_drvdata(&qcam->vdev, qcam);
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mutex_init(&qcam->lock);
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@ -844,6 +836,7 @@ static int init_cqcam(struct parport *port)
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static void close_cqcam(struct qcam *qcam)
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{
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video_unregister_device(&qcam->vdev);
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v4l2_ctrl_handler_free(&qcam->hdl);
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parport_unregister_device(qcam->pdev);
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kfree(qcam);
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}
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