[pwc] [PATCH] PWC: Support VIDIOC_?_PARM ioctls

[Gregor Jasny <>]

Hi,

this patch adds support for the VIDIOC_{G,S}_PARM ioctls.

The patch is against the latest v4l-dvb HG tree.

Thanks,
Gregor

This patch add support for the VIDIOC_G/S_PARM ioctls.

Signed-off-by: Gregor Jasny <>
---
diff -r 51e1cc391dd8 linux/drivers/media/video/pwc/pwc-v4l.c
--- a/linux/drivers/media/video/pwc/pwc-v4l.c   Sun Apr 22 23:55:10 2007 -0300
+++ b/linux/drivers/media/video/pwc/pwc-v4l.c   Mon Apr 23 14:26:33 2007 +0200
@@ -337,6 +337,38 @@ static int pwc_vidioc_set_fmt(struct pwc
 
 }
 
+static int pwc_vidioc_get_parm(struct pwc_device *pdev, struct v4l2_streamparm 
*parm)
+{
+       if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+               return -EINVAL;
+       }
+
+       memset(parm, 0, sizeof *parm);
+       parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+       parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
+       if (pdev->vsnapshot) parm->parm.capture.capturemode |= 
V4L2_MODE_HIGHQUALITY;
+       parm->parm.capture.timeperframe.numerator = 1;
+       parm->parm.capture.timeperframe.denominator = pdev->vframes;
+
+       return 0;
+}
+
+static int pwc_vidioc_set_parm(struct pwc_device *pdev, struct v4l2_streamparm 
*parm)
+{
+       if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
+           parm->parm.capture.timeperframe.numerator != 1) {
+               return -EINVAL;
+       }
+
+       return pwc_set_video_mode(pdev,
+                       pdev->view.x,
+                       pdev->view.y,
+                       parm->parm.capture.timeperframe.denominator,
+                       pdev->vcompression,
+                       parm->parm.capture.capturemode & V4L2_MODE_HIGHQUALITY);
+                                 
+}
+
 int pwc_video_do_ioctl(struct inode *inode, struct file *file,
                       unsigned int cmd, void *arg)
 {
@@ -1251,6 +1283,12 @@ int pwc_video_do_ioctl(struct inode *ino
                        return 0;
                }
 
+               case VIDIOC_G_PARM:
+                       return pwc_vidioc_get_parm(pdev, arg);
+
+               case VIDIOC_S_PARM:
+                       return pwc_vidioc_set_parm(pdev, arg);
+
                default:
                        return pwc_ioctl(pdev, cmd, arg);
        } /* ..switch */

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