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Commit 2206112b authored by Lubomir Rintel's avatar Lubomir Rintel Committed by Mauro Carvalho Chehab
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[media] usbtv: Add S-Video input support 



Alongside already existing Composite input.

Signed-off-by: default avatarLubomir Rintel <lkundrak@v3.sk>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent ac22521c

drivers/media/usb/usbtv/usbtv.c

+82 −17
Original line number Diff line number Diff line
@@ -90,17 +90,78 @@ struct usbtv { 
	 * out when a new one begins. */

	u32 frame_id;



	enum {

		USBTV_COMPOSITE_INPUT,

		USBTV_SVIDEO_INPUT,

	} input;

	int iso_size;

	unsigned int sequence;

	struct urb *isoc_urbs[USBTV_ISOC_TRANSFERS];

};



static int usbtv_setup_capture(struct usbtv *usbtv)

static int usbtv_set_regs(struct usbtv *usbtv, const u16 regs[][2], int size)

{

	int ret;

	int pipe = usb_rcvctrlpipe(usbtv->udev, 0);

	int i;

	static const u16 protoregs[][2] = {



	for (i = 0; i < size; i++) {

		u16 index = regs[i][0];

		u16 value = regs[i][1];



		ret = usb_control_msg(usbtv->udev, pipe, USBTV_REQUEST_REG,

			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,

			value, index, NULL, 0, 0);

		if (ret < 0)

			return ret;

	}



	return 0;

}



static int usbtv_select_input(struct usbtv *usbtv, int input)

{

	int ret;



	static const u16 composite[][2] = {

		{ USBTV_BASE + 0x0105, 0x0060 },

		{ USBTV_BASE + 0x011f, 0x00f2 },

		{ USBTV_BASE + 0x0127, 0x0060 },

		{ USBTV_BASE + 0x00ae, 0x0010 },

		{ USBTV_BASE + 0x0284, 0x00aa },

		{ USBTV_BASE + 0x0239, 0x0060 },

	};



	static const u16 svideo[][2] = {

		{ USBTV_BASE + 0x0105, 0x0010 },

		{ USBTV_BASE + 0x011f, 0x00ff },

		{ USBTV_BASE + 0x0127, 0x0060 },

		{ USBTV_BASE + 0x00ae, 0x0030 },

		{ USBTV_BASE + 0x0284, 0x0088 },

		{ USBTV_BASE + 0x0239, 0x0060 },

	};



	switch (input) {

	case USBTV_COMPOSITE_INPUT:

		ret = usbtv_set_regs(usbtv, composite, ARRAY_SIZE(composite));

		break;

	case USBTV_SVIDEO_INPUT:

		ret = usbtv_set_regs(usbtv, svideo, ARRAY_SIZE(svideo));

		break;

	default:

		ret = -EINVAL;

	}



	if (!ret)

		usbtv->input = input;



	return ret;

}



static int usbtv_setup_capture(struct usbtv *usbtv)

{

	int ret;

	static const u16 setup[][2] = {

		/* These seem to enable the device. */

		{ USBTV_BASE + 0x0008, 0x0001 },

		{ USBTV_BASE + 0x01d0, 0x00ff },
@@ -188,16 +249,13 @@ static int usbtv_setup_capture(struct usbtv *usbtv) 
		{ USBTV_BASE + 0x024f, 0x0002 },

	};



	for (i = 0; i < ARRAY_SIZE(protoregs); i++) {

		u16 index = protoregs[i][0];

		u16 value = protoregs[i][1];

	ret = usbtv_set_regs(usbtv, setup, ARRAY_SIZE(setup));

	if (ret)

		return ret;



		ret = usb_control_msg(usbtv->udev, pipe, USBTV_REQUEST_REG,

			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,

			value, index, NULL, 0, 0);

		if (ret < 0)

	ret = usbtv_select_input(usbtv, usbtv->input);

	if (ret)

		return ret;

	}



	return 0;

}
@@ -418,10 +476,17 @@ static int usbtv_querycap(struct file *file, void *priv, 
static int usbtv_enum_input(struct file *file, void *priv,

					struct v4l2_input *i)

{

	if (i->index > 0)

	switch (i->index) {

	case USBTV_COMPOSITE_INPUT:

		strlcpy(i->name, "Composite", sizeof(i->name));

		break;

	case USBTV_SVIDEO_INPUT:

		strlcpy(i->name, "S-Video", sizeof(i->name));

		break;

	default:

		return -EINVAL;

	}



	strlcpy(i->name, "Composite", sizeof(i->name));

	i->type = V4L2_INPUT_TYPE_CAMERA;

	i->std = V4L2_STD_525_60;

	return 0;
@@ -461,15 +526,15 @@ static int usbtv_g_std(struct file *file, void *priv, v4l2_std_id *norm) 


static int usbtv_g_input(struct file *file, void *priv, unsigned int *i)

{

	*i = 0;

	struct usbtv *usbtv = video_drvdata(file);

	*i = usbtv->input;

	return 0;

}



static int usbtv_s_input(struct file *file, void *priv, unsigned int i)

{

	if (i > 0)

		return -EINVAL;

	return 0;

	struct usbtv *usbtv = video_drvdata(file);

	return usbtv_select_input(usbtv, i);

}



static int usbtv_s_std(struct file *file, void *priv, v4l2_std_id norm)