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authorJonathan Corbet <corbet@lwn.net>2006-12-01 15:50:59 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-12-10 09:05:31 -0200
commitc8f5b2f5607e78c61df229259c539a5d9488a013 (patch)
tree918f87bf2f2a85e020bac3f45297a1f4c05a6208 /drivers/media/video/cafe_ccic.c
parenta66d23368068d6027feedc010304d510e6d1fe56 (diff)
V4L/DVB (4909): Add s/g_parm to cafe_ccic
Add s/g_parm support allowing applications to tweak the frame rate. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/cafe_ccic.c')
-rw-r--r--drivers/media/video/cafe_ccic.c34
1 files changed, 33 insertions, 1 deletions
diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c
index 9d9844e22951..e347c7ebc984 100644
--- a/drivers/media/video/cafe_ccic.c
+++ b/drivers/media/video/cafe_ccic.c
@@ -1671,6 +1671,37 @@ static int cafe_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
return 0;
}
+/*
+ * G/S_PARM. Most of this is done by the sensor, but we are
+ * the level which controls the number of read buffers.
+ */
+static int cafe_vidioc_g_parm(struct file *filp, void *priv,
+ struct v4l2_streamparm *parms)
+{
+ struct cafe_camera *cam = priv;
+ int ret;
+
+ mutex_lock(&cam->s_mutex);
+ ret = __cafe_cam_cmd(cam, VIDIOC_G_PARM, parms);
+ mutex_unlock(&cam->s_mutex);
+ parms->parm.capture.readbuffers = n_dma_bufs;
+ return ret;
+}
+
+static int cafe_vidioc_s_parm(struct file *filp, void *priv,
+ struct v4l2_streamparm *parms)
+{
+ struct cafe_camera *cam = priv;
+ int ret;
+
+ mutex_lock(&cam->s_mutex);
+ ret = __cafe_cam_cmd(cam, VIDIOC_S_PARM, parms);
+ mutex_unlock(&cam->s_mutex);
+ parms->parm.capture.readbuffers = n_dma_bufs;
+ return ret;
+}
+
+
static void cafe_v4l_dev_release(struct video_device *vd)
{
struct cafe_camera *cam = container_of(vd, struct cafe_camera, v4ldev);
@@ -1724,7 +1755,8 @@ static struct video_device cafe_v4l_template = {
.vidioc_queryctrl = cafe_vidioc_queryctrl,
.vidioc_g_ctrl = cafe_vidioc_g_ctrl,
.vidioc_s_ctrl = cafe_vidioc_s_ctrl,
- /* Do cropping someday */
+ .vidioc_g_parm = cafe_vidioc_g_parm,
+ .vidioc_s_parm = cafe_vidioc_s_parm,
};

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