[linux-2.6-block.git] / drivers / media / usb / gspca / spca1528.c

/*
 * spca1528 subdriver
 *
 * Copyright (C) 2010-2011 Jean-Francois Moine (http://moinejf.free.fr)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "spca1528"

#include "gspca.h"
#include "jpeg.h"

MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
MODULE_DESCRIPTION("SPCA1528 USB Camera Driver");
MODULE_LICENSE("GPL");

/* specific webcam descriptor */
struct sd {
	struct gspca_dev gspca_dev;	/* !! must be the first item */

	u8 pkt_seq;

	u8 jpeg_hdr[JPEG_HDR_SZ];
};

static const struct v4l2_pix_format vga_mode[] = {
/*		(does not work correctly)
	{176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 176,
		.sizeimage = 176 * 144 * 5 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 3},
*/
	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 320,
		.sizeimage = 320 * 240 * 4 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 2},
	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
		.bytesperline = 640,
		.sizeimage = 640 * 480 * 3 / 8 + 590,
		.colorspace = V4L2_COLORSPACE_JPEG,
		.priv = 1},
};

/* read <len> bytes to gspca usb_buf */
static void reg_r(struct gspca_dev *gspca_dev,
			u8 req,
			u16 index,
			int len)
{
#if USB_BUF_SZ < 64
#error "USB buffer too small"
#endif
	struct usb_device *dev = gspca_dev->dev;
	int ret;

	if (gspca_dev->usb_err < 0)
		return;
	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
			req,
			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			0x0000,			/* value */
			index,
			gspca_dev->usb_buf, len,
			500);
	gspca_dbg(gspca_dev, D_USBI, "GET %02x 0000 %04x %02x\n", req, index,
		  gspca_dev->usb_buf[0]);
	if (ret < 0) {
		pr_err("reg_r err %d\n", ret);
		gspca_dev->usb_err = ret;
	}
}

static void reg_w(struct gspca_dev *gspca_dev,
			u8 req,
			u16 value,
			u16 index)
{
	struct usb_device *dev = gspca_dev->dev;
	int ret;

	if (gspca_dev->usb_err < 0)
		return;
	gspca_dbg(gspca_dev, D_USBO, "SET %02x %04x %04x\n", req, value, index);
	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			req,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			value, index,
			NULL, 0, 500);
	if (ret < 0) {
		pr_err("reg_w err %d\n", ret);
		gspca_dev->usb_err = ret;
	}
}

static void reg_wb(struct gspca_dev *gspca_dev,
			u8 req,
			u16 value,
			u16 index,
			u8 byte)
{
	struct usb_device *dev = gspca_dev->dev;
	int ret;

	if (gspca_dev->usb_err < 0)
		return;
	gspca_dbg(gspca_dev, D_USBO, "SET %02x %04x %04x %02x\n",
		  req, value, index, byte);
	gspca_dev->usb_buf[0] = byte;
	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			req,
			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			value, index,
			gspca_dev->usb_buf, 1, 500);
	if (ret < 0) {
		pr_err("reg_w err %d\n", ret);
		gspca_dev->usb_err = ret;
	}
}

static void wait_status_0(struct gspca_dev *gspca_dev)
{
	int i, w;

	i = 16;
	w = 0;
	do {
		reg_r(gspca_dev, 0x21, 0x0000, 1);
		if (gspca_dev->usb_buf[0] == 0)
			return;
		w += 15;
		msleep(w);
	} while (--i > 0);
	gspca_err(gspca_dev, "wait_status_0 timeout\n");
	gspca_dev->usb_err = -ETIME;
}

static void wait_status_1(struct gspca_dev *gspca_dev)
{
	int i;

	i = 10;
	do {
		reg_r(gspca_dev, 0x21, 0x0001, 1);
		msleep(10);
		if (gspca_dev->usb_buf[0] == 1) {
			reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00);
			reg_r(gspca_dev, 0x21, 0x0001, 1);
			return;
		}
	} while (--i > 0);
	gspca_err(gspca_dev, "wait_status_1 timeout\n");
	gspca_dev->usb_err = -ETIME;
}

static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
{
	reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, val);
}

static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
	reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, val);
}

static void sethue(struct gspca_dev *gspca_dev, s32 val)
{
	reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, val);
}

static void setcolor(struct gspca_dev *gspca_dev, s32 val)
{
	reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, val);
}

static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
{
	reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, val);
}

/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
			const struct usb_device_id *id)
{
	gspca_dev->cam.cam_mode = vga_mode;
	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
	gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */
			/*fixme: 256 in ms-win traces*/

	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	reg_w(gspca_dev, 0x00, 0x0001, 0x2067);
	reg_w(gspca_dev, 0x00, 0x00d0, 0x206b);
	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
	msleep(8);
	reg_w(gspca_dev, 0x00, 0x00c0, 0x206b);
	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);

	reg_r(gspca_dev, 0x20, 0x0000, 1);
	reg_r(gspca_dev, 0x20, 0x0000, 5);
	reg_r(gspca_dev, 0x23, 0x0000, 64);
	gspca_dbg(gspca_dev, D_PROBE, "%s%s\n", &gspca_dev->usb_buf[0x1c],
		  &gspca_dev->usb_buf[0x30]);
	reg_r(gspca_dev, 0x23, 0x0001, 64);
	return gspca_dev->usb_err;
}

/* function called at start time before URB creation */
static int sd_isoc_init(struct gspca_dev *gspca_dev)
{
	u8 mode;

	reg_r(gspca_dev, 0x00, 0x2520, 1);
	wait_status_0(gspca_dev);
	reg_w(gspca_dev, 0xc5, 0x0003, 0x0000);
	wait_status_1(gspca_dev);

	wait_status_0(gspca_dev);
	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
	reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode);
	reg_r(gspca_dev, 0x25, 0x0004, 1);
	reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06);	/* 420 */
	reg_r(gspca_dev, 0x27, 0x0000, 1);

/* not useful..
	gspca_dev->alt = 4;		* use alternate setting 3 */

	return gspca_dev->usb_err;
}

/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	/* initialize the JPEG header */
	jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
			gspca_dev->pixfmt.width,
			0x22);		/* JPEG 411 */

	/* the JPEG quality shall be 85% */
	jpeg_set_qual(sd->jpeg_hdr, 85);

	reg_r(gspca_dev, 0x00, 0x2520, 1);
	msleep(8);

	/* start the capture */
	wait_status_0(gspca_dev);
	reg_w(gspca_dev, 0x31, 0x0000, 0x0004);	/* start request */
	wait_status_1(gspca_dev);
	wait_status_0(gspca_dev);
	msleep(200);

	sd->pkt_seq = 0;
	return gspca_dev->usb_err;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	/* stop the capture */
	wait_status_0(gspca_dev);
	reg_w(gspca_dev, 0x31, 0x0000, 0x0000);	/* stop request */
	wait_status_1(gspca_dev);
	wait_status_0(gspca_dev);
}

/* move a packet adding 0x00 after 0xff */
static void add_packet(struct gspca_dev *gspca_dev,
			u8 *data,
			int len)
{
	int i;

	i = 0;
	do {
		if (data[i] == 0xff) {
			gspca_frame_add(gspca_dev, INTER_PACKET,
					data, i + 1);
			len -= i;
			data += i;
			*data = 0x00;
			i = 0;
		}
	} while (++i < len);
	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
}

static void sd_pkt_scan(struct gspca_dev *gspca_dev,
			u8 *data,			/* isoc packet */
			int len)			/* iso packet length */
{
	struct sd *sd = (struct sd *) gspca_dev;
	static const u8 ffd9[] = {0xff, 0xd9};

	/* image packets start with:
	 *	02 8n
	 * with <n> bit:
	 *	0x01: even (0) / odd (1) image
	 *	0x02: end of image when set
	 */
	if (len < 3)
		return;				/* empty packet */
	if (*data == 0x02) {
		if (data[1] & 0x02) {
			sd->pkt_seq = !(data[1] & 1);
			add_packet(gspca_dev, data + 2, len - 2);
			gspca_frame_add(gspca_dev, LAST_PACKET,
					ffd9, 2);
			return;
		}
		if ((data[1] & 1) != sd->pkt_seq)
			goto err;
		if (gspca_dev->last_packet_type == LAST_PACKET)
			gspca_frame_add(gspca_dev, FIRST_PACKET,
					sd->jpeg_hdr, JPEG_HDR_SZ);
		add_packet(gspca_dev, data + 2, len - 2);
		return;
	}
err:
	gspca_dev->last_packet_type = DISCARD_PACKET;
}

static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct gspca_dev *gspca_dev =
		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);

	gspca_dev->usb_err = 0;

	if (!gspca_dev->streaming)
		return 0;

	switch (ctrl->id) {
	case V4L2_CID_BRIGHTNESS:
		setbrightness(gspca_dev, ctrl->val);
		break;
	case V4L2_CID_CONTRAST:
		setcontrast(gspca_dev, ctrl->val);
		break;
	case V4L2_CID_HUE:
		sethue(gspca_dev, ctrl->val);
		break;
	case V4L2_CID_SATURATION:
		setcolor(gspca_dev, ctrl->val);
		break;
	case V4L2_CID_SHARPNESS:
		setsharpness(gspca_dev, ctrl->val);
		break;
	}
	return gspca_dev->usb_err;
}

static const struct v4l2_ctrl_ops sd_ctrl_ops = {
	.s_ctrl = sd_s_ctrl,
};

static int sd_init_controls(struct gspca_dev *gspca_dev)
{
	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;

	gspca_dev->vdev.ctrl_handler = hdl;
	v4l2_ctrl_handler_init(hdl, 5);
	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
			V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
			V4L2_CID_CONTRAST, 0, 8, 1, 1);
	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
			V4L2_CID_HUE, 0, 255, 1, 0);
	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
			V4L2_CID_SATURATION, 0, 8, 1, 1);
	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
			V4L2_CID_SHARPNESS, 0, 255, 1, 0);

	if (hdl->error) {
		pr_err("Could not initialize controls\n");
		return hdl->error;
	}
	return 0;
}

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.config = sd_config,
	.init = sd_init,
	.init_controls = sd_init_controls,
	.isoc_init = sd_isoc_init,
	.start = sd_start,
	.stopN = sd_stopN,
	.pkt_scan = sd_pkt_scan,
};

/* -- module initialisation -- */
static const struct usb_device_id device_table[] = {
	{USB_DEVICE(0x04fc, 0x1528)},
	{}
};
MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf,
			const struct usb_device_id *id)
{
	/* the video interface for isochronous transfer is 1 */
	if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
		return -ENODEV;

	return gspca_dev_probe2(intf, id, &sd_desc, sizeof(struct sd),
				THIS_MODULE);
}

static struct usb_driver sd_driver = {
	.name = MODULE_NAME,
	.id_table = device_table,
	.probe = sd_probe,
	.disconnect = gspca_disconnect,
#ifdef CONFIG_PM
	.suspend = gspca_suspend,
	.resume = gspca_resume,
	.reset_resume = gspca_resume,
#endif
};

module_usb_driver(sd_driver);
Commit	Line	Data
5b0ff8c4 JFM	1	/*
	2	* spca1528 subdriver
	3	*
0dd82696	4	* Copyright (C) 2010-2011 Jean-Francois Moine (http://moinejf.free.fr)
5b0ff8c4 JFM	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
5b0ff8c4 JFM	15	*/
5b0ff8c4 JFM	16
133a9fe9 JP	17	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	18
5b0ff8c4 JFM	19	#define MODULE_NAME "spca1528"
	20
	21	#include "gspca.h"
	22	#include "jpeg.h"
	23
	24	MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
	25	MODULE_DESCRIPTION("SPCA1528 USB Camera Driver");
	26	MODULE_LICENSE("GPL");
	27
	28	/* specific webcam descriptor */
	29	struct sd {
	30	struct gspca_dev gspca_dev; /* !! must be the first item */
	31
5b0ff8c4 JFM	32	u8 pkt_seq;
	33
	34	u8 jpeg_hdr[JPEG_HDR_SZ];
	35	};
	36
5b0ff8c4 JFM	37	static const struct v4l2_pix_format vga_mode[] = {
	38	/* (does not work correctly)
	39	{176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	40	.bytesperline = 176,
	41	.sizeimage = 176 * 144 * 5 / 8 + 590,
	42	.colorspace = V4L2_COLORSPACE_JPEG,
	43	.priv = 3},
	44	*/
	45	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	46	.bytesperline = 320,
	47	.sizeimage = 320 * 240 * 4 / 8 + 590,
	48	.colorspace = V4L2_COLORSPACE_JPEG,
	49	.priv = 2},
	50	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	51	.bytesperline = 640,
	52	.sizeimage = 640 * 480 * 3 / 8 + 590,
	53	.colorspace = V4L2_COLORSPACE_JPEG,
	54	.priv = 1},
	55	};
	56
	57	/* read <len> bytes to gspca usb_buf */
	58	static void reg_r(struct gspca_dev *gspca_dev,
	59	u8 req,
	60	u16 index,
	61	int len)
	62	{
	63	#if USB_BUF_SZ < 64
	64	#error "USB buffer too small"
	65	#endif
	66	struct usb_device *dev = gspca_dev->dev;
	67	int ret;
	68
	69	if (gspca_dev->usb_err < 0)
	70	return;
	71	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	72	req,
	73	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	74	0x0000, /* value */
	75	index,
	76	gspca_dev->usb_buf, len,
	77	500);
37d5efb0 JP	78	gspca_dbg(gspca_dev, D_USBI, "GET %02x 0000 %04x %02x\n", req, index,
37d5efb0 JP	79	gspca_dev->usb_buf[0]);
5b0ff8c4	80	if (ret < 0) {
133a9fe9	81	pr_err("reg_r err %d\n", ret);
5b0ff8c4 JFM	82	gspca_dev->usb_err = ret;
	83	}
	84	}
	85
	86	static void reg_w(struct gspca_dev *gspca_dev,
	87	u8 req,
	88	u16 value,
	89	u16 index)
	90	{
	91	struct usb_device *dev = gspca_dev->dev;
	92	int ret;
	93
	94	if (gspca_dev->usb_err < 0)
	95	return;
37d5efb0	96	gspca_dbg(gspca_dev, D_USBO, "SET %02x %04x %04x\n", req, value, index);
5b0ff8c4 JFM	97	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	98	req,
	99	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	100	value, index,
	101	NULL, 0, 500);
	102	if (ret < 0) {
133a9fe9	103	pr_err("reg_w err %d\n", ret);
5b0ff8c4 JFM	104	gspca_dev->usb_err = ret;
	105	}
	106	}
	107
	108	static void reg_wb(struct gspca_dev *gspca_dev,
	109	u8 req,
	110	u16 value,
	111	u16 index,
	112	u8 byte)
	113	{
	114	struct usb_device *dev = gspca_dev->dev;
	115	int ret;
	116
	117	if (gspca_dev->usb_err < 0)
	118	return;
37d5efb0 JP	119	gspca_dbg(gspca_dev, D_USBO, "SET %02x %04x %04x %02x\n",
37d5efb0 JP	120	req, value, index, byte);
5b0ff8c4 JFM	121	gspca_dev->usb_buf[0] = byte;
	122	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	123	req,
	124	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	125	value, index,
	126	gspca_dev->usb_buf, 1, 500);
	127	if (ret < 0) {
133a9fe9	128	pr_err("reg_w err %d\n", ret);
5b0ff8c4 JFM	129	gspca_dev->usb_err = ret;
	130	}
	131	}
	132
	133	static void wait_status_0(struct gspca_dev *gspca_dev)
	134	{
9ba4a4ba	135	int i, w;
5b0ff8c4	136
9ba4a4ba JFM	137	i = 16;
9ba4a4ba JFM	138	w = 0;
5b0ff8c4 JFM	139	do {
	140	reg_r(gspca_dev, 0x21, 0x0000, 1);
	141	if (gspca_dev->usb_buf[0] == 0)
	142	return;
9ba4a4ba JFM	143	w += 15;
9ba4a4ba JFM	144	msleep(w);
5b0ff8c4	145	} while (--i > 0);
52173c5f	146	gspca_err(gspca_dev, "wait_status_0 timeout\n");
5b0ff8c4 JFM	147	gspca_dev->usb_err = -ETIME;
	148	}
	149
	150	static void wait_status_1(struct gspca_dev *gspca_dev)
	151	{
	152	int i;
	153
	154	i = 10;
	155	do {
	156	reg_r(gspca_dev, 0x21, 0x0001, 1);
	157	msleep(10);
	158	if (gspca_dev->usb_buf[0] == 1) {
	159	reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00);
	160	reg_r(gspca_dev, 0x21, 0x0001, 1);
	161	return;
	162	}
	163	} while (--i > 0);
52173c5f	164	gspca_err(gspca_dev, "wait_status_1 timeout\n");
5b0ff8c4 JFM	165	gspca_dev->usb_err = -ETIME;
	166	}
	167
6e937b7f	168	static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	169	{
6e937b7f	170	reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, val);
5b0ff8c4 JFM	171	}
5b0ff8c4 JFM	172
6e937b7f	173	static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	174	{
6e937b7f	175	reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, val);
5b0ff8c4 JFM	176	}
5b0ff8c4 JFM	177
6e937b7f	178	static void sethue(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	179	{
6e937b7f	180	reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, val);
5b0ff8c4 JFM	181	}
5b0ff8c4 JFM	182
6e937b7f	183	static void setcolor(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	184	{
6e937b7f	185	reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, val);
5b0ff8c4 JFM	186	}
5b0ff8c4 JFM	187
6e937b7f	188	static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	189	{
6e937b7f	190	reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, val);
5b0ff8c4 JFM	191	}
	192
	193	/* this function is called at probe time */
	194	static int sd_config(struct gspca_dev *gspca_dev,
	195	const struct usb_device_id *id)
	196	{
5b0ff8c4 JFM	197	gspca_dev->cam.cam_mode = vga_mode;
	198	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
	199	gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */
	200	/fixme: 256 in ms-win traces/
	201
5b0ff8c4 JFM	202	return 0;
	203	}
	204
	205	/* this function is called at probe and resume time */
	206	static int sd_init(struct gspca_dev *gspca_dev)
	207	{
	208	reg_w(gspca_dev, 0x00, 0x0001, 0x2067);
	209	reg_w(gspca_dev, 0x00, 0x00d0, 0x206b);
	210	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	211	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
	212	msleep(8);
	213	reg_w(gspca_dev, 0x00, 0x00c0, 0x206b);
	214	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	215	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
	216
	217	reg_r(gspca_dev, 0x20, 0x0000, 1);
	218	reg_r(gspca_dev, 0x20, 0x0000, 5);
	219	reg_r(gspca_dev, 0x23, 0x0000, 64);
37d5efb0 JP	220	gspca_dbg(gspca_dev, D_PROBE, "%s%s\n", &gspca_dev->usb_buf[0x1c],
37d5efb0 JP	221	&gspca_dev->usb_buf[0x30]);
5b0ff8c4 JFM	222	reg_r(gspca_dev, 0x23, 0x0001, 64);
	223	return gspca_dev->usb_err;
	224	}
	225
	226	/* function called at start time before URB creation */
	227	static int sd_isoc_init(struct gspca_dev *gspca_dev)
	228	{
	229	u8 mode;
	230
	231	reg_r(gspca_dev, 0x00, 0x2520, 1);
	232	wait_status_0(gspca_dev);
	233	reg_w(gspca_dev, 0xc5, 0x0003, 0x0000);
	234	wait_status_1(gspca_dev);
	235
	236	wait_status_0(gspca_dev);
	237	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
	238	reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode);
	239	reg_r(gspca_dev, 0x25, 0x0004, 1);
0dd82696	240	reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06); /* 420 */
5b0ff8c4	241	reg_r(gspca_dev, 0x27, 0x0000, 1);
6507b423 JFM	242
	243	/* not useful..
	244	gspca_dev->alt = 4; * use alternate setting 3 */
	245
5b0ff8c4 JFM	246	return gspca_dev->usb_err;
	247	}
	248
	249	/* -- start the camera -- */
	250	static int sd_start(struct gspca_dev *gspca_dev)
	251	{
	252	struct sd sd = (struct sd ) gspca_dev;
	253
	254	/* initialize the JPEG header */
1966bc2a OZ	255	jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
1966bc2a OZ	256	gspca_dev->pixfmt.width,
5b0ff8c4 JFM	257	0x22); /* JPEG 411 */
5b0ff8c4 JFM	258
3e12950d JFM	259	/* the JPEG quality shall be 85% */
3e12950d JFM	260	jpeg_set_qual(sd->jpeg_hdr, 85);
5b0ff8c4	261
5b0ff8c4 JFM	262	reg_r(gspca_dev, 0x00, 0x2520, 1);
	263	msleep(8);
	264
	265	/* start the capture */
	266	wait_status_0(gspca_dev);
0dd82696	267	reg_w(gspca_dev, 0x31, 0x0000, 0x0004); /* start request */
5b0ff8c4 JFM	268	wait_status_1(gspca_dev);
	269	wait_status_0(gspca_dev);
	270	msleep(200);
	271
	272	sd->pkt_seq = 0;
	273	return gspca_dev->usb_err;
	274	}
	275
	276	static void sd_stopN(struct gspca_dev *gspca_dev)
	277	{
	278	/* stop the capture */
	279	wait_status_0(gspca_dev);
0dd82696	280	reg_w(gspca_dev, 0x31, 0x0000, 0x0000); /* stop request */
5b0ff8c4 JFM	281	wait_status_1(gspca_dev);
	282	wait_status_0(gspca_dev);
	283	}
	284
	285	/* move a packet adding 0x00 after 0xff */
	286	static void add_packet(struct gspca_dev *gspca_dev,
	287	u8 *data,
	288	int len)
	289	{
	290	int i;
	291
	292	i = 0;
	293	do {
	294	if (data[i] == 0xff) {
	295	gspca_frame_add(gspca_dev, INTER_PACKET,
	296	data, i + 1);
	297	len -= i;
	298	data += i;
	299	*data = 0x00;
	300	i = 0;
	301	}
	302	} while (++i < len);
	303	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
	304	}
	305
	306	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
	307	u8 data, / isoc packet */
	308	int len) /* iso packet length */
	309	{
	310	struct sd sd = (struct sd ) gspca_dev;
	311	static const u8 ffd9[] = {0xff, 0xd9};
	312
	313	/* image packets start with:
	314	* 02 8n
	315	* with <n> bit:
	316	* 0x01: even (0) / odd (1) image
	317	* 0x02: end of image when set
	318	*/
	319	if (len < 3)
	320	return; /* empty packet */
	321	if (*data == 0x02) {
	322	if (data[1] & 0x02) {
	323	sd->pkt_seq = !(data[1] & 1);
	324	add_packet(gspca_dev, data + 2, len - 2);
	325	gspca_frame_add(gspca_dev, LAST_PACKET,
	326	ffd9, 2);
	327	return;
	328	}
	329	if ((data[1] & 1) != sd->pkt_seq)
	330	goto err;
	331	if (gspca_dev->last_packet_type == LAST_PACKET)
	332	gspca_frame_add(gspca_dev, FIRST_PACKET,
	333	sd->jpeg_hdr, JPEG_HDR_SZ);
	334	add_packet(gspca_dev, data + 2, len - 2);
	335	return;
	336	}
	337	err:
	338	gspca_dev->last_packet_type = DISCARD_PACKET;
	339	}
	340
6e937b7f	341	static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
5b0ff8c4	342	{
6e937b7f HV	343	struct gspca_dev *gspca_dev =
	344	container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
	345
	346	gspca_dev->usb_err = 0;
	347
	348	if (!gspca_dev->streaming)
	349	return 0;
	350
	351	switch (ctrl->id) {
	352	case V4L2_CID_BRIGHTNESS:
	353	setbrightness(gspca_dev, ctrl->val);
	354	break;
	355	case V4L2_CID_CONTRAST:
	356	setcontrast(gspca_dev, ctrl->val);
	357	break;
	358	case V4L2_CID_HUE:
	359	sethue(gspca_dev, ctrl->val);
	360	break;
	361	case V4L2_CID_SATURATION:
	362	setcolor(gspca_dev, ctrl->val);
	363	break;
	364	case V4L2_CID_SHARPNESS:
	365	setsharpness(gspca_dev, ctrl->val);
	366	break;
	367	}
5b0ff8c4 JFM	368	return gspca_dev->usb_err;
	369	}
	370
6e937b7f HV	371	static const struct v4l2_ctrl_ops sd_ctrl_ops = {
	372	.s_ctrl = sd_s_ctrl,
	373	};
5b0ff8c4	374
6e937b7f	375	static int sd_init_controls(struct gspca_dev *gspca_dev)
5b0ff8c4	376	{
6e937b7f HV	377	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
	378
	379	gspca_dev->vdev.ctrl_handler = hdl;
	380	v4l2_ctrl_handler_init(hdl, 5);
	381	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	382	V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
	383	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	384	V4L2_CID_CONTRAST, 0, 8, 1, 1);
	385	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	386	V4L2_CID_HUE, 0, 255, 1, 0);
	387	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	388	V4L2_CID_SATURATION, 0, 8, 1, 1);
	389	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	390	V4L2_CID_SHARPNESS, 0, 255, 1, 0);
	391
	392	if (hdl->error) {
	393	pr_err("Could not initialize controls\n");
	394	return hdl->error;
	395	}
5b0ff8c4 JFM	396	return 0;
	397	}
	398
	399	/* sub-driver description */
	400	static const struct sd_desc sd_desc = {
	401	.name = MODULE_NAME,
5b0ff8c4 JFM	402	.config = sd_config,
5b0ff8c4 JFM	403	.init = sd_init,
6e937b7f	404	.init_controls = sd_init_controls,
5b0ff8c4 JFM	405	.isoc_init = sd_isoc_init,
	406	.start = sd_start,
	407	.stopN = sd_stopN,
	408	.pkt_scan = sd_pkt_scan,
	409	};
	410
	411	/* -- module initialisation -- */
95c967c1	412	static const struct usb_device_id device_table[] = {
5b0ff8c4 JFM	413	{USB_DEVICE(0x04fc, 0x1528)},
	414	{}
	415	};
	416	MODULE_DEVICE_TABLE(usb, device_table);
	417
	418	/* -- device connect -- */
	419	static int sd_probe(struct usb_interface *intf,
	420	const struct usb_device_id *id)
	421	{
	422	/* the video interface for isochronous transfer is 1 */
	423	if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
	424	return -ENODEV;
	425
	426	return gspca_dev_probe2(intf, id, &sd_desc, sizeof(struct sd),
	427	THIS_MODULE);
	428	}
	429
	430	static struct usb_driver sd_driver = {
	431	.name = MODULE_NAME,
	432	.id_table = device_table,
	433	.probe = sd_probe,
	434	.disconnect = gspca_disconnect,
	435	#ifdef CONFIG_PM
	436	.suspend = gspca_suspend,
	437	.resume = gspca_resume,
8bb58964	438	.reset_resume = gspca_resume,
5b0ff8c4 JFM	439	#endif
	440	};
	441
ecb3b2b3	442	module_usb_driver(sd_driver);