[mirror_ubuntu-artful-kernel.git] / drivers / media / video / 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#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);
	PDEBUG(D_ERR, "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);
	PDEBUG(D_ERR, "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->height, gspca_dev->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.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
133a9fe9 JP	21	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	22
5b0ff8c4 JFM	23	#define MODULE_NAME "spca1528"
	24
	25	#include "gspca.h"
	26	#include "jpeg.h"
	27
	28	MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
	29	MODULE_DESCRIPTION("SPCA1528 USB Camera Driver");
	30	MODULE_LICENSE("GPL");
	31
	32	/* specific webcam descriptor */
	33	struct sd {
	34	struct gspca_dev gspca_dev; /* !! must be the first item */
	35
5b0ff8c4 JFM	36	u8 pkt_seq;
	37
	38	u8 jpeg_hdr[JPEG_HDR_SZ];
	39	};
	40
5b0ff8c4 JFM	41	static const struct v4l2_pix_format vga_mode[] = {
	42	/* (does not work correctly)
	43	{176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	44	.bytesperline = 176,
	45	.sizeimage = 176 * 144 * 5 / 8 + 590,
	46	.colorspace = V4L2_COLORSPACE_JPEG,
	47	.priv = 3},
	48	*/
	49	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	50	.bytesperline = 320,
	51	.sizeimage = 320 * 240 * 4 / 8 + 590,
	52	.colorspace = V4L2_COLORSPACE_JPEG,
	53	.priv = 2},
	54	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
	55	.bytesperline = 640,
	56	.sizeimage = 640 * 480 * 3 / 8 + 590,
	57	.colorspace = V4L2_COLORSPACE_JPEG,
	58	.priv = 1},
	59	};
	60
	61	/* read <len> bytes to gspca usb_buf */
	62	static void reg_r(struct gspca_dev *gspca_dev,
	63	u8 req,
	64	u16 index,
	65	int len)
	66	{
	67	#if USB_BUF_SZ < 64
	68	#error "USB buffer too small"
	69	#endif
	70	struct usb_device *dev = gspca_dev->dev;
	71	int ret;
	72
	73	if (gspca_dev->usb_err < 0)
	74	return;
	75	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	76	req,
	77	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	78	0x0000, /* value */
	79	index,
	80	gspca_dev->usb_buf, len,
	81	500);
	82	PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", req, index,
	83	gspca_dev->usb_buf[0]);
	84	if (ret < 0) {
133a9fe9	85	pr_err("reg_r err %d\n", ret);
5b0ff8c4 JFM	86	gspca_dev->usb_err = ret;
	87	}
	88	}
	89
	90	static void reg_w(struct gspca_dev *gspca_dev,
	91	u8 req,
	92	u16 value,
	93	u16 index)
	94	{
	95	struct usb_device *dev = gspca_dev->dev;
	96	int ret;
	97
	98	if (gspca_dev->usb_err < 0)
	99	return;
	100	PDEBUG(D_USBO, "SET %02x %04x %04x", req, value, index);
	101	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	102	req,
	103	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	104	value, index,
	105	NULL, 0, 500);
	106	if (ret < 0) {
133a9fe9	107	pr_err("reg_w err %d\n", ret);
5b0ff8c4 JFM	108	gspca_dev->usb_err = ret;
	109	}
	110	}
	111
	112	static void reg_wb(struct gspca_dev *gspca_dev,
	113	u8 req,
	114	u16 value,
	115	u16 index,
	116	u8 byte)
	117	{
	118	struct usb_device *dev = gspca_dev->dev;
	119	int ret;
	120
	121	if (gspca_dev->usb_err < 0)
	122	return;
	123	PDEBUG(D_USBO, "SET %02x %04x %04x %02x", req, value, index, byte);
	124	gspca_dev->usb_buf[0] = byte;
	125	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	126	req,
	127	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	128	value, index,
	129	gspca_dev->usb_buf, 1, 500);
	130	if (ret < 0) {
133a9fe9	131	pr_err("reg_w err %d\n", ret);
5b0ff8c4 JFM	132	gspca_dev->usb_err = ret;
	133	}
	134	}
	135
	136	static void wait_status_0(struct gspca_dev *gspca_dev)
	137	{
9ba4a4ba	138	int i, w;
5b0ff8c4	139
9ba4a4ba JFM	140	i = 16;
9ba4a4ba JFM	141	w = 0;
5b0ff8c4 JFM	142	do {
	143	reg_r(gspca_dev, 0x21, 0x0000, 1);
	144	if (gspca_dev->usb_buf[0] == 0)
	145	return;
9ba4a4ba JFM	146	w += 15;
9ba4a4ba JFM	147	msleep(w);
5b0ff8c4 JFM	148	} while (--i > 0);
	149	PDEBUG(D_ERR, "wait_status_0 timeout");
	150	gspca_dev->usb_err = -ETIME;
	151	}
	152
	153	static void wait_status_1(struct gspca_dev *gspca_dev)
	154	{
	155	int i;
	156
	157	i = 10;
	158	do {
	159	reg_r(gspca_dev, 0x21, 0x0001, 1);
	160	msleep(10);
	161	if (gspca_dev->usb_buf[0] == 1) {
	162	reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00);
	163	reg_r(gspca_dev, 0x21, 0x0001, 1);
	164	return;
	165	}
	166	} while (--i > 0);
	167	PDEBUG(D_ERR, "wait_status_1 timeout");
	168	gspca_dev->usb_err = -ETIME;
	169	}
	170
6e937b7f	171	static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	172	{
6e937b7f	173	reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, val);
5b0ff8c4 JFM	174	}
5b0ff8c4 JFM	175
6e937b7f	176	static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	177	{
6e937b7f	178	reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, val);
5b0ff8c4 JFM	179	}
5b0ff8c4 JFM	180
6e937b7f	181	static void sethue(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	182	{
6e937b7f	183	reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, val);
5b0ff8c4 JFM	184	}
5b0ff8c4 JFM	185
6e937b7f	186	static void setcolor(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	187	{
6e937b7f	188	reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, val);
5b0ff8c4 JFM	189	}
5b0ff8c4 JFM	190
6e937b7f	191	static void setsharpness(struct gspca_dev *gspca_dev, s32 val)
5b0ff8c4	192	{
6e937b7f	193	reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, val);
5b0ff8c4 JFM	194	}
	195
	196	/* this function is called at probe time */
	197	static int sd_config(struct gspca_dev *gspca_dev,
	198	const struct usb_device_id *id)
	199	{
5b0ff8c4 JFM	200	gspca_dev->cam.cam_mode = vga_mode;
	201	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
	202	gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */
	203	/fixme: 256 in ms-win traces/
	204
5b0ff8c4 JFM	205	return 0;
	206	}
	207
	208	/* this function is called at probe and resume time */
	209	static int sd_init(struct gspca_dev *gspca_dev)
	210	{
	211	reg_w(gspca_dev, 0x00, 0x0001, 0x2067);
	212	reg_w(gspca_dev, 0x00, 0x00d0, 0x206b);
	213	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	214	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
	215	msleep(8);
	216	reg_w(gspca_dev, 0x00, 0x00c0, 0x206b);
	217	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
	218	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
	219
	220	reg_r(gspca_dev, 0x20, 0x0000, 1);
	221	reg_r(gspca_dev, 0x20, 0x0000, 5);
	222	reg_r(gspca_dev, 0x23, 0x0000, 64);
	223	PDEBUG(D_PROBE, "%s%s", &gspca_dev->usb_buf[0x1c],
	224	&gspca_dev->usb_buf[0x30]);
	225	reg_r(gspca_dev, 0x23, 0x0001, 64);
	226	return gspca_dev->usb_err;
	227	}
	228
	229	/* function called at start time before URB creation */
	230	static int sd_isoc_init(struct gspca_dev *gspca_dev)
	231	{
	232	u8 mode;
	233
	234	reg_r(gspca_dev, 0x00, 0x2520, 1);
	235	wait_status_0(gspca_dev);
	236	reg_w(gspca_dev, 0xc5, 0x0003, 0x0000);
	237	wait_status_1(gspca_dev);
	238
	239	wait_status_0(gspca_dev);
	240	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
	241	reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode);
	242	reg_r(gspca_dev, 0x25, 0x0004, 1);
0dd82696	243	reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06); /* 420 */
5b0ff8c4	244	reg_r(gspca_dev, 0x27, 0x0000, 1);
6507b423 JFM	245
	246	/* not useful..
	247	gspca_dev->alt = 4; * use alternate setting 3 */
	248
5b0ff8c4 JFM	249	return gspca_dev->usb_err;
	250	}
	251
	252	/* -- start the camera -- */
	253	static int sd_start(struct gspca_dev *gspca_dev)
	254	{
	255	struct sd sd = (struct sd ) gspca_dev;
	256
	257	/* initialize the JPEG header */
	258	jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
	259	0x22); /* JPEG 411 */
	260
3e12950d JFM	261	/* the JPEG quality shall be 85% */
3e12950d JFM	262	jpeg_set_qual(sd->jpeg_hdr, 85);
5b0ff8c4	263
5b0ff8c4 JFM	264	reg_r(gspca_dev, 0x00, 0x2520, 1);
	265	msleep(8);
	266
	267	/* start the capture */
	268	wait_status_0(gspca_dev);
0dd82696	269	reg_w(gspca_dev, 0x31, 0x0000, 0x0004); /* start request */
5b0ff8c4 JFM	270	wait_status_1(gspca_dev);
	271	wait_status_0(gspca_dev);
	272	msleep(200);
	273
	274	sd->pkt_seq = 0;
	275	return gspca_dev->usb_err;
	276	}
	277
	278	static void sd_stopN(struct gspca_dev *gspca_dev)
	279	{
	280	/* stop the capture */
	281	wait_status_0(gspca_dev);
0dd82696	282	reg_w(gspca_dev, 0x31, 0x0000, 0x0000); /* stop request */
5b0ff8c4 JFM	283	wait_status_1(gspca_dev);
	284	wait_status_0(gspca_dev);
	285	}
	286
	287	/* move a packet adding 0x00 after 0xff */
	288	static void add_packet(struct gspca_dev *gspca_dev,
	289	u8 *data,
	290	int len)
	291	{
	292	int i;
	293
	294	i = 0;
	295	do {
	296	if (data[i] == 0xff) {
	297	gspca_frame_add(gspca_dev, INTER_PACKET,
	298	data, i + 1);
	299	len -= i;
	300	data += i;
	301	*data = 0x00;
	302	i = 0;
	303	}
	304	} while (++i < len);
	305	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
	306	}
	307
	308	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
	309	u8 data, / isoc packet */
	310	int len) /* iso packet length */
	311	{
	312	struct sd sd = (struct sd ) gspca_dev;
	313	static const u8 ffd9[] = {0xff, 0xd9};
	314
	315	/* image packets start with:
	316	* 02 8n
	317	* with <n> bit:
	318	* 0x01: even (0) / odd (1) image
	319	* 0x02: end of image when set
	320	*/
	321	if (len < 3)
	322	return; /* empty packet */
	323	if (*data == 0x02) {
	324	if (data[1] & 0x02) {
	325	sd->pkt_seq = !(data[1] & 1);
	326	add_packet(gspca_dev, data + 2, len - 2);
	327	gspca_frame_add(gspca_dev, LAST_PACKET,
	328	ffd9, 2);
	329	return;
	330	}
	331	if ((data[1] & 1) != sd->pkt_seq)
	332	goto err;
	333	if (gspca_dev->last_packet_type == LAST_PACKET)
	334	gspca_frame_add(gspca_dev, FIRST_PACKET,
	335	sd->jpeg_hdr, JPEG_HDR_SZ);
	336	add_packet(gspca_dev, data + 2, len - 2);
	337	return;
	338	}
	339	err:
	340	gspca_dev->last_packet_type = DISCARD_PACKET;
	341	}
	342
6e937b7f	343	static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
5b0ff8c4	344	{
6e937b7f HV	345	struct gspca_dev *gspca_dev =
	346	container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
	347
	348	gspca_dev->usb_err = 0;
	349
	350	if (!gspca_dev->streaming)
	351	return 0;
	352
	353	switch (ctrl->id) {
	354	case V4L2_CID_BRIGHTNESS:
	355	setbrightness(gspca_dev, ctrl->val);
	356	break;
	357	case V4L2_CID_CONTRAST:
	358	setcontrast(gspca_dev, ctrl->val);
	359	break;
	360	case V4L2_CID_HUE:
	361	sethue(gspca_dev, ctrl->val);
	362	break;
	363	case V4L2_CID_SATURATION:
	364	setcolor(gspca_dev, ctrl->val);
	365	break;
	366	case V4L2_CID_SHARPNESS:
	367	setsharpness(gspca_dev, ctrl->val);
	368	break;
	369	}
5b0ff8c4 JFM	370	return gspca_dev->usb_err;
	371	}
	372
6e937b7f HV	373	static const struct v4l2_ctrl_ops sd_ctrl_ops = {
	374	.s_ctrl = sd_s_ctrl,
	375	};
5b0ff8c4	376
6e937b7f	377	static int sd_init_controls(struct gspca_dev *gspca_dev)
5b0ff8c4	378	{
6e937b7f HV	379	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
	380
	381	gspca_dev->vdev.ctrl_handler = hdl;
	382	v4l2_ctrl_handler_init(hdl, 5);
	383	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	384	V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
	385	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	386	V4L2_CID_CONTRAST, 0, 8, 1, 1);
	387	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	388	V4L2_CID_HUE, 0, 255, 1, 0);
	389	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	390	V4L2_CID_SATURATION, 0, 8, 1, 1);
	391	v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
	392	V4L2_CID_SHARPNESS, 0, 255, 1, 0);
	393
	394	if (hdl->error) {
	395	pr_err("Could not initialize controls\n");
	396	return hdl->error;
	397	}
5b0ff8c4 JFM	398	return 0;
	399	}
	400
	401	/* sub-driver description */
	402	static const struct sd_desc sd_desc = {
	403	.name = MODULE_NAME,
5b0ff8c4 JFM	404	.config = sd_config,
5b0ff8c4 JFM	405	.init = sd_init,
6e937b7f	406	.init_controls = sd_init_controls,
5b0ff8c4 JFM	407	.isoc_init = sd_isoc_init,
	408	.start = sd_start,
	409	.stopN = sd_stopN,
	410	.pkt_scan = sd_pkt_scan,
	411	};
	412
	413	/* -- module initialisation -- */
95c967c1	414	static const struct usb_device_id device_table[] = {
5b0ff8c4 JFM	415	{USB_DEVICE(0x04fc, 0x1528)},
	416	{}
	417	};
	418	MODULE_DEVICE_TABLE(usb, device_table);
	419
	420	/* -- device connect -- */
	421	static int sd_probe(struct usb_interface *intf,
	422	const struct usb_device_id *id)
	423	{
	424	/* the video interface for isochronous transfer is 1 */
	425	if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
	426	return -ENODEV;
	427
	428	return gspca_dev_probe2(intf, id, &sd_desc, sizeof(struct sd),
	429	THIS_MODULE);
	430	}
	431
	432	static struct usb_driver sd_driver = {
	433	.name = MODULE_NAME,
	434	.id_table = device_table,
	435	.probe = sd_probe,
	436	.disconnect = gspca_disconnect,
	437	#ifdef CONFIG_PM
	438	.suspend = gspca_suspend,
	439	.resume = gspca_resume,
8bb58964	440	.reset_resume = gspca_resume,
5b0ff8c4 JFM	441	#endif
	442	};
	443
ecb3b2b3	444	module_usb_driver(sd_driver);