soc_camera: multiple input capable enum, g & s
From: Philipp Wiesner <p.wiesner@xxxxxxx>
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@xxxxxxx>
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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