[E3-hacking] [RFC] [PATCH 4/6] SoC Camera: add support for g_parm / s_parm operations

[Janusz Krzysztofik]

This patch adds support for g_parm / s_parm operations to the SoC Camera 
framework. It is usefull for checking/setting camera frame rate.

Example usage can be found in the previous patch from this series, 
"SoC Camera: add driver for OV6650 sensor".

Created and tested against linux-2.6.35-rc3 on Amstrad Delta.

Signed-off-by: Janusz Krzysztofik <jkrzyszt at tis.icnet.pl>
---
 drivers/media/video/soc_camera.c |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

--- linux-2.6.35-rc3.orig/drivers/media/video/soc_camera.c	2010-06-26 15:55:34.000000000 +0200
+++ linux-2.6.35-rc3/drivers/media/video/soc_camera.c	2010-06-27 00:04:10.000000000 +0200
@@ -1144,6 +1144,20 @@ static int default_s_crop(struct soc_cam
 	return v4l2_subdev_call(sd, video, s_crop, a);
 }
 
+static int default_g_parm(struct soc_camera_device *icd,
+			  struct v4l2_streamparm *parm)
+{
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	return v4l2_subdev_call(sd, video, g_parm, parm);
+}
+
+static int default_s_parm(struct soc_camera_device *icd,
+			  struct v4l2_streamparm *parm)
+{
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	return v4l2_subdev_call(sd, video, s_parm, parm);
+}
+
 static void soc_camera_device_init(struct device *dev, void *pdata)
 {
 	dev->platform_data	= pdata;
@@ -1175,6 +1189,10 @@ int soc_camera_host_register(struct soc_
 		ici->ops->get_crop = default_g_crop;
 	if (!ici->ops->cropcap)
 		ici->ops->cropcap = default_cropcap;
+	if (!ici->ops->set_parm)
+		ici->ops->set_parm = default_s_parm;
+	if (!ici->ops->get_parm)
+		ici->ops->get_parm = default_g_parm;
 
 	mutex_lock(&list_lock);
 	list_for_each_entry(ix, &hosts, list) {