[mirror_ubuntu-artful-kernel.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);
	PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", 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;
	PDEBUG(D_USBO, "SET %02x %04x %04x", 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;
	PDEBUG(D_USBO, "SET %02x %04x %04x %02x", 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);
	PERR("wait_status_0 timeout");
	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);
	PERR("wait_status_1 timeout");
	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);
	PDEBUG(D_PROBE, "%s%s", &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);
	78	PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", req, index,
	79	gspca_dev->usb_buf[0]);
	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;
	96	PDEBUG(D_USBO, "SET %02x %04x %04x", req, value, index);
	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;
	119	PDEBUG(D_USBO, "SET %02x %04x %04x %02x", req, value, index, byte);
	120	gspca_dev->usb_buf[0] = byte;
	121	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	122	req,
	123	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	124	value, index,
	125	gspca_dev->usb_buf, 1, 500);
	126	if (ret < 0) {
133a9fe9	127	pr_err("reg_w err %d\n", ret);
5b0ff8c4 JFM	128	gspca_dev->usb_err = ret;
	129	}
	130	}
	131
	132	static void wait_status_0(struct gspca_dev *gspca_dev)
	133	{
9ba4a4ba	134	int i, w;
5b0ff8c4	135
9ba4a4ba JFM	136	i = 16;
9ba4a4ba JFM	137	w = 0;
5b0ff8c4 JFM	138	do {
	139	reg_r(gspca_dev, 0x21, 0x0000, 1);
	140	if (gspca_dev->usb_buf[0] == 0)
	141	return;
9ba4a4ba JFM	142	w += 15;
9ba4a4ba JFM	143	msleep(w);
5b0ff8c4	144	} while (--i > 0);
c93396e1	145	PERR("wait_status_0 timeout");
5b0ff8c4 JFM	146	gspca_dev->usb_err = -ETIME;
	147	}
	148
	149	static void wait_status_1(struct gspca_dev *gspca_dev)
	150	{
	151	int i;
	152
	153	i = 10;
	154	do {
	155	reg_r(gspca_dev, 0x21, 0x0001, 1);
	156	msleep(10);
	157	if (gspca_dev->usb_buf[0] == 1) {
	158	reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00);
	159	reg_r(gspca_dev, 0x21, 0x0001, 1);
	160	return;
	161	}
	162	} while (--i > 0);
c93396e1	163	PERR("wait_status_1 timeout");
5b0ff8c4 JFM	164	gspca_dev->usb_err = -ETIME;
	165	}
	166
6e937b7f	167	static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	168	{
6e937b7f	169	reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, val);
5b0ff8c4 JFM	170	}
5b0ff8c4 JFM	171
6e937b7f	172	static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	173	{
6e937b7f	174	reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, val);
5b0ff8c4 JFM	175	}
5b0ff8c4 JFM	176
6e937b7f	177	static void sethue(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	178	{
6e937b7f	179	reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, val);
5b0ff8c4 JFM	180	}
5b0ff8c4 JFM	181
6e937b7f	182	static void setcolor(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	183	{
6e937b7f	184	reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, val);
5b0ff8c4 JFM	185	}
5b0ff8c4 JFM	186
6e937b7f	187	static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	188	{
6e937b7f	189	reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, val);
5b0ff8c4 JFM	190	}
	191
	192	/* this function is called at probe time */
	193	static int sd_config(struct gspca_dev *gspca_dev,
	194	const struct usb_device_id *id)
	195	{
5b0ff8c4 JFM	196	gspca_dev->cam.cam_mode = vga_mode;
	197	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
	198	gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */
	199	/fixme: 256 in ms-win traces/
	200
5b0ff8c4 JFM	201	return 0;
	202	}
	203
	204	/* this function is called at probe and resume time */
	205	static int sd_init(struct gspca_dev *gspca_dev)
	206	{
	207	reg_w(gspca_dev, 0x00, 0x0001, 0x2067);
	208	reg_w(gspca_dev, 0x00, 0x00d0, 0x206b);
	209	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	210	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
	211	msleep(8);
	212	reg_w(gspca_dev, 0x00, 0x00c0, 0x206b);
	213	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	214	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
	215
	216	reg_r(gspca_dev, 0x20, 0x0000, 1);
	217	reg_r(gspca_dev, 0x20, 0x0000, 5);
	218	reg_r(gspca_dev, 0x23, 0x0000, 64);
	219	PDEBUG(D_PROBE, "%s%s", &gspca_dev->usb_buf[0x1c],
	220	&gspca_dev->usb_buf[0x30]);
	221	reg_r(gspca_dev, 0x23, 0x0001, 64);
	222	return gspca_dev->usb_err;
	223	}
	224
	225	/* function called at start time before URB creation */
	226	static int sd_isoc_init(struct gspca_dev *gspca_dev)
	227	{
	228	u8 mode;
	229
	230	reg_r(gspca_dev, 0x00, 0x2520, 1);
	231	wait_status_0(gspca_dev);
	232	reg_w(gspca_dev, 0xc5, 0x0003, 0x0000);
	233	wait_status_1(gspca_dev);
	234
	235	wait_status_0(gspca_dev);
	236	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
	237	reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode);
	238	reg_r(gspca_dev, 0x25, 0x0004, 1);
0dd82696	239	reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06); /* 420 */
5b0ff8c4	240	reg_r(gspca_dev, 0x27, 0x0000, 1);
6507b423 JFM	241
	242	/* not useful..
	243	gspca_dev->alt = 4; * use alternate setting 3 */
	244
5b0ff8c4 JFM	245	return gspca_dev->usb_err;
	246	}
	247
	248	/* -- start the camera -- */
	249	static int sd_start(struct gspca_dev *gspca_dev)
	250	{
	251	struct sd sd = (struct sd ) gspca_dev;
	252
	253	/* initialize the JPEG header */
1966bc2a OZ	254	jpeg_define(sd->jpeg_hdr, gspca_dev->pixfmt.height,
1966bc2a OZ	255	gspca_dev->pixfmt.width,
5b0ff8c4 JFM	256	0x22); /* JPEG 411 */
5b0ff8c4 JFM	257
3e12950d JFM	258	/* the JPEG quality shall be 85% */
3e12950d JFM	259	jpeg_set_qual(sd->jpeg_hdr, 85);
5b0ff8c4	260
5b0ff8c4 JFM	261	reg_r(gspca_dev, 0x00, 0x2520, 1);
	262	msleep(8);
	263
	264	/* start the capture */
	265	wait_status_0(gspca_dev);
0dd82696	266	reg_w(gspca_dev, 0x31, 0x0000, 0x0004); /* start request */
5b0ff8c4 JFM	267	wait_status_1(gspca_dev);
	268	wait_status_0(gspca_dev);
	269	msleep(200);
	270
	271	sd->pkt_seq = 0;
	272	return gspca_dev->usb_err;
	273	}
	274
	275	static void sd_stopN(struct gspca_dev *gspca_dev)
	276	{
	277	/* stop the capture */
	278	wait_status_0(gspca_dev);
0dd82696	279	reg_w(gspca_dev, 0x31, 0x0000, 0x0000); /* stop request */
5b0ff8c4 JFM	280	wait_status_1(gspca_dev);
	281	wait_status_0(gspca_dev);
	282	}
	283
	284	/* move a packet adding 0x00 after 0xff */
	285	static void add_packet(struct gspca_dev *gspca_dev,
	286	u8 *data,
	287	int len)
	288	{
	289	int i;
	290
	291	i = 0;
	292	do {
	293	if (data[i] == 0xff) {
	294	gspca_frame_add(gspca_dev, INTER_PACKET,
	295	data, i + 1);
	296	len -= i;
	297	data += i;
	298	*data = 0x00;
	299	i = 0;
	300	}
	301	} while (++i < len);
	302	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
	303	}
	304
	305	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
	306	u8 data, / isoc packet */
	307	int len) /* iso packet length */
	308	{
	309	struct sd sd = (struct sd ) gspca_dev;
	310	static const u8 ffd9[] = {0xff, 0xd9};
	311
	312	/* image packets start with:
	313	* 02 8n
	314	* with <n> bit:
	315	* 0x01: even (0) / odd (1) image
	316	* 0x02: end of image when set
	317	*/
	318	if (len < 3)
	319	return; /* empty packet */
	320	if (*data == 0x02) {
	321	if (data[1] & 0x02) {
	322	sd->pkt_seq = !(data[1] & 1);
	323	add_packet(gspca_dev, data + 2, len - 2);
	324	gspca_frame_add(gspca_dev, LAST_PACKET,
	325	ffd9, 2);
	326	return;
	327	}
	328	if ((data[1] & 1) != sd->pkt_seq)
	329	goto err;
	330	if (gspca_dev->last_packet_type == LAST_PACKET)
	331	gspca_frame_add(gspca_dev, FIRST_PACKET,
	332	sd->jpeg_hdr, JPEG_HDR_SZ);
	333	add_packet(gspca_dev, data + 2, len - 2);
	334	return;
	335	}
	336	err:
	337	gspca_dev->last_packet_type = DISCARD_PACKET;
	338	}
	339
6e937b7f	340	static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
5b0ff8c4	341	{
6e937b7f HV	342	struct gspca_dev *gspca_dev =
	343	container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
	344
	345	gspca_dev->usb_err = 0;
	346
	347	if (!gspca_dev->streaming)
	348	return 0;
	349
	350	switch (ctrl->id) {
	351	case V4L2_CID_BRIGHTNESS:
	352	setbrightness(gspca_dev, ctrl->val);
	353	break;
	354	case V4L2_CID_CONTRAST:
	355	setcontrast(gspca_dev, ctrl->val);
	356	break;
	357	case V4L2_CID_HUE:
	358	sethue(gspca_dev, ctrl->val);
	359	break;
	360	case V4L2_CID_SATURATION:
	361	setcolor(gspca_dev, ctrl->val);
	362	break;
	363	case V4L2_CID_SHARPNESS:
	364	setsharpness(gspca_dev, ctrl->val);
	365	break;
	366	}
5b0ff8c4 JFM	367	return gspca_dev->usb_err;
	368	}
	369
6e937b7f HV	370	static const struct v4l2_ctrl_ops sd_ctrl_ops = {
	371	.s_ctrl = sd_s_ctrl,
	372	};
5b0ff8c4	373
6e937b7f	374	static int sd_init_controls(struct gspca_dev *gspca_dev)
5b0ff8c4	375	{
6e937b7f HV	376	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
	377
	378	gspca_dev->vdev.ctrl_handler = hdl;
	379	v4l2_ctrl_handler_init(hdl, 5);
	380	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	381	V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
	382	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	383	V4L2_CID_CONTRAST, 0, 8, 1, 1);
	384	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	385	V4L2_CID_HUE, 0, 255, 1, 0);
	386	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	387	V4L2_CID_SATURATION, 0, 8, 1, 1);
	388	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	389	V4L2_CID_SHARPNESS, 0, 255, 1, 0);
	390
	391	if (hdl->error) {
	392	pr_err("Could not initialize controls\n");
	393	return hdl->error;
	394	}
5b0ff8c4 JFM	395	return 0;
	396	}
	397
	398	/* sub-driver description */
	399	static const struct sd_desc sd_desc = {
	400	.name = MODULE_NAME,
5b0ff8c4 JFM	401	.config = sd_config,
5b0ff8c4 JFM	402	.init = sd_init,
6e937b7f	403	.init_controls = sd_init_controls,
5b0ff8c4 JFM	404	.isoc_init = sd_isoc_init,
	405	.start = sd_start,
	406	.stopN = sd_stopN,
	407	.pkt_scan = sd_pkt_scan,
	408	};
	409
	410	/* -- module initialisation -- */
95c967c1	411	static const struct usb_device_id device_table[] = {
5b0ff8c4 JFM	412	{USB_DEVICE(0x04fc, 0x1528)},
	413	{}
	414	};
	415	MODULE_DEVICE_TABLE(usb, device_table);
	416
	417	/* -- device connect -- */
	418	static int sd_probe(struct usb_interface *intf,
	419	const struct usb_device_id *id)
	420	{
	421	/* the video interface for isochronous transfer is 1 */
	422	if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
	423	return -ENODEV;
	424
	425	return gspca_dev_probe2(intf, id, &sd_desc, sizeof(struct sd),
	426	THIS_MODULE);
	427	}
	428
	429	static struct usb_driver sd_driver = {
	430	.name = MODULE_NAME,
	431	.id_table = device_table,
	432	.probe = sd_probe,
	433	.disconnect = gspca_disconnect,
	434	#ifdef CONFIG_PM
	435	.suspend = gspca_suspend,
	436	.resume = gspca_resume,
8bb58964	437	.reset_resume = gspca_resume,
5b0ff8c4 JFM	438	#endif
	439	};
	440
ecb3b2b3	441	module_usb_driver(sd_driver);