V4L/DVB (9876): gspca - main: Allow subdrivers to handle v4l2_streamparm requests.
Add get_streamparm and set_streamparm operations so subdrivers can
get/set stream parameters such as framerate.
Signed-off-by: Jim Paris <jim@jtan.com>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index a5c21ca..76cfb09 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -1327,6 +1327,17 @@
memset(parm, 0, sizeof *parm);
parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
parm->parm.capture.readbuffers = gspca_dev->nbufread;
+
+ if (gspca_dev->sd_desc->get_streamparm) {
+ int ret;
+
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+ ret = gspca_dev->sd_desc->get_streamparm(gspca_dev, parm);
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
+ }
+
return 0;
}
@@ -1341,6 +1352,17 @@
parm->parm.capture.readbuffers = gspca_dev->nbufread;
else
gspca_dev->nbufread = n;
+
+ if (gspca_dev->sd_desc->set_streamparm) {
+ int ret;
+
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+ ret = gspca_dev->sd_desc->set_streamparm(gspca_dev, parm);
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
+ }
+
return 0;
}
diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h
index 15db132..79cef31 100644
--- a/drivers/media/video/gspca/gspca.h
+++ b/drivers/media/video/gspca/gspca.h
@@ -74,6 +74,8 @@
typedef int (*cam_cf_op) (struct gspca_dev *, const struct usb_device_id *);
typedef int (*cam_jpg_op) (struct gspca_dev *,
struct v4l2_jpegcompression *);
+typedef int (*cam_streamparm_op) (struct gspca_dev *,
+ struct v4l2_streamparm *);
typedef int (*cam_qmnu_op) (struct gspca_dev *,
struct v4l2_querymenu *);
typedef void (*cam_pkt_op) (struct gspca_dev *gspca_dev,
@@ -106,6 +108,8 @@
cam_jpg_op get_jcomp;
cam_jpg_op set_jcomp;
cam_qmnu_op querymenu;
+ cam_streamparm_op get_streamparm;
+ cam_streamparm_op set_streamparm;
};
/* packet types when moving from iso buf to frame buf */