[PATCH] soc_camera: multiple input capable enum, g & s

["Philipp Wiesner" <p.wiesner@gmx.net>]

soc_camera: multiple input capable enum, g & s

From: Philipp Wiesner <p.wiesner@gmx.net>

I did some small changes to support soc camera devices with multiple inputs, e.g. tw9910 (driver doesn't support this yet).
soc-camera.c:
soc_camera_enum_input: capable of handling multiple inputs.
soc_camera_g_input: calls icd's g_input if present.
soc_camera_s_input: calls icd's s_input if present.
soc-camera.h:
struct soc_camera_ops: Added aliases for g_input and s_input functions here.

Priority: normal

Signed-off-by: Philipp Wiesner <p.wiesner@gmx.net>

diff -r 43878f8dbfb0 -r a5254e7d306a linux/drivers/media/video/soc_camera.c
--- a/linux/drivers/media/video/soc_camera.c	Sun Nov 01 07:17:46 2009 -0200
+++ b/linux/drivers/media/video/soc_camera.c	Tue Nov 03 17:17:49 2009 +0100
@@ -119,11 +119,10 @@
 	struct soc_camera_device *icd = icf->icd;
 	int ret = 0;
 
-	if (inp->index != 0)
-		return -EINVAL;
-
 	if (icd->ops->enum_input)
 		ret = icd->ops->enum_input(icd, inp);
+	else if (inp->index != 0)
+		return -EINVAL;
 	else {
 		/* default is camera */
 		inp->type = V4L2_INPUT_TYPE_CAMERA;
@@ -136,17 +135,30 @@
 
 static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i)
 {
-	*i = 0;
+	struct soc_camera_file *icf = file->private_data;
+	struct soc_camera_device *icd = icf->icd;
+	int ret = 0;
 
-	return 0;
+	if (icd->ops->g_input)
+		ret = icd->ops->g_input(icd, i);
+	else
+		*i = 0;
+
+	return ret;
 }
 
 static int soc_camera_s_input(struct file *file, void *priv, unsigned int i)
 {
-	if (i > 0)
+	struct soc_camera_file *icf = file->private_data;
+	struct soc_camera_device *icd = icf->icd;
+	int ret = 0;
+
+	if (icd->ops->s_input)
+		ret = icd->ops->s_input(icd, i);
+	else if (i > 0)
 		return -EINVAL;
 
-	return 0;
+	return ret;
 }
 
 static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a)
diff -r 43878f8dbfb0 -r a5254e7d306a linux/include/media/soc_camera.h
--- a/linux/include/media/soc_camera.h	Sun Nov 01 07:17:46 2009 -0200
+++ b/linux/include/media/soc_camera.h	Tue Nov 03 17:17:49 2009 +0100
@@ -197,6 +197,8 @@
 	unsigned long (*query_bus_param)(struct soc_camera_device *);
 	int (*set_bus_param)(struct soc_camera_device *, unsigned long);
 	int (*enum_input)(struct soc_camera_device *, struct v4l2_input *);
+	int (*g_input)(struct soc_camera_device *, unsigned int *);
+	int (*s_input)(struct soc_camera_device *, unsigned int);
 	const struct v4l2_queryctrl *controls;
 	int num_controls;
 };

-- 
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