[deliverable/linux.git] / drivers / media / video / gspca / spca1528.c

/*
 * spca1528 subdriver
 *
 * Copyright (C) 2010 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 brightness;
	u8 contrast;
	u8 hue;
	u8 color;
	u8 sharpness;

	u8 pkt_seq;

	u8 jpeg_hdr[JPEG_HDR_SZ];
};

/* V4L2 controls supported by the driver */
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val);
static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcolor(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val);

static const struct ctrl sd_ctrls[] = {
	{
	    {
		.id      = V4L2_CID_BRIGHTNESS,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Brightness",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define BRIGHTNESS_DEF 128
		.default_value = BRIGHTNESS_DEF,
	    },
	    .set = sd_setbrightness,
	    .get = sd_getbrightness,
	},
	{
	    {
		.id      = V4L2_CID_CONTRAST,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Contrast",
		.minimum = 0,
		.maximum = 8,
		.step    = 1,
#define CONTRAST_DEF 1
		.default_value = CONTRAST_DEF,
	    },
	    .set = sd_setcontrast,
	    .get = sd_getcontrast,
	},
	{
	    {
		.id      = V4L2_CID_HUE,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Hue",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define HUE_DEF 0
		.default_value = HUE_DEF,
	    },
	    .set = sd_sethue,
	    .get = sd_gethue,
	},
	{
	    {
		.id      = V4L2_CID_SATURATION,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Saturation",
		.minimum = 0,
		.maximum = 8,
		.step    = 1,
#define COLOR_DEF 1
		.default_value = COLOR_DEF,
	    },
	    .set = sd_setcolor,
	    .get = sd_getcolor,
	},
	{
	    {
		.id	 = V4L2_CID_SHARPNESS,
		.type    = V4L2_CTRL_TYPE_INTEGER,
		.name    = "Sharpness",
		.minimum = 0,
		.maximum = 255,
		.step    = 1,
#define SHARPNESS_DEF 0
		.default_value = SHARPNESS_DEF,
	    },
	    .set = sd_setsharpness,
	    .get = sd_getsharpness,
	},
};

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;

	i = 20;
	do {
		reg_r(gspca_dev, 0x21, 0x0000, 1);
		if (gspca_dev->usb_buf[0] == 0)
			return;
		msleep(30);
	} 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)
{
	struct sd *sd = (struct sd *) gspca_dev;

	reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, sd->brightness);
}

static void setcontrast(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, sd->contrast);
}

static void sethue(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, sd->hue);
}

static void setcolor(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, sd->color);
}

static void setsharpness(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;

	reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, sd->sharpness);
}

/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
			const struct usb_device_id *id)
{
	struct sd *sd = (struct sd *) gspca_dev;

	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*/

	sd->brightness = BRIGHTNESS_DEF;
	sd->contrast = CONTRAST_DEF;
	sd->hue = HUE_DEF;
	sd->color = COLOR_DEF;
	sd->sharpness = SHARPNESS_DEF;

	gspca_dev->nbalt = 4;		/* use alternate setting 3 */

	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);
	reg_r(gspca_dev, 0x27, 0x0000, 1);
	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 seems to be 82% */
	jpeg_set_qual(sd->jpeg_hdr, 82);

	/* set the controls */
	setbrightness(gspca_dev);
	setcontrast(gspca_dev);
	sethue(gspca_dev);
	setcolor(gspca_dev);
	setsharpness(gspca_dev);

	msleep(5);
	reg_r(gspca_dev, 0x00, 0x2520, 1);
	msleep(8);

	/* start the capture */
	wait_status_0(gspca_dev);
	reg_w(gspca_dev, 0x31, 0x0000, 0x0004);
	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);
	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_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->brightness = val;
	if (gspca_dev->streaming)
		setbrightness(gspca_dev);
	return gspca_dev->usb_err;
}

static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->brightness;
	return 0;
}

static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->contrast = val;
	if (gspca_dev->streaming)
		setcontrast(gspca_dev);
	return gspca_dev->usb_err;
}

static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->contrast;
	return 0;
}

static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->hue = val;
	if (gspca_dev->streaming)
		sethue(gspca_dev);
	return gspca_dev->usb_err;
}

static int sd_gethue(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->hue;
	return 0;
}

static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->color = val;
	if (gspca_dev->streaming)
		setcolor(gspca_dev);
	return gspca_dev->usb_err;
}

static int sd_getcolor(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->color;
	return 0;
}

static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	sd->sharpness = val;
	if (gspca_dev->streaming)
		setsharpness(gspca_dev);
	return gspca_dev->usb_err;
}

static int sd_getsharpness(struct gspca_dev *gspca_dev, __s32 *val)
{
	struct sd *sd = (struct sd *) gspca_dev;

	*val = sd->sharpness;
	return 0;
}

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name = MODULE_NAME,
	.ctrls = sd_ctrls,
	.nctrls = ARRAY_SIZE(sd_ctrls),
	.config = sd_config,
	.init = sd_init,
	.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,
#endif
};

/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
	return usb_register(&sd_driver);
}
static void __exit sd_mod_exit(void)
{
	usb_deregister(&sd_driver);
}

module_init(sd_mod_init);
module_exit(sd_mod_exit);
Commit	Line	Data
5b0ff8c4 JFM	1	/*
	2	* spca1528 subdriver
	3	*
	4	* Copyright (C) 2010 Jean-Francois Moine (http://moinejf.free.fr)
	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
	36	u8 brightness;
	37	u8 contrast;
	38	u8 hue;
	39	u8 color;
	40	u8 sharpness;
	41
	42	u8 pkt_seq;
	43
	44	u8 jpeg_hdr[JPEG_HDR_SZ];
	45	};
	46
	47	/* V4L2 controls supported by the driver */
	48	static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
	49	static int sd_getbrightness(struct gspca_dev gspca_dev, __s32 val);
	50	static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
	51	static int sd_getcontrast(struct gspca_dev gspca_dev, __s32 val);
	52	static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val);
	53	static int sd_gethue(struct gspca_dev gspca_dev, __s32 val);
	54	static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val);
	55	static int sd_getcolor(struct gspca_dev gspca_dev, __s32 val);
	56	static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val);
	57	static int sd_getsharpness(struct gspca_dev gspca_dev, __s32 val);
	58
	59	static const struct ctrl sd_ctrls[] = {
	60	{
	61	{
	62	.id = V4L2_CID_BRIGHTNESS,
	63	.type = V4L2_CTRL_TYPE_INTEGER,
	64	.name = "Brightness",
	65	.minimum = 0,
	66	.maximum = 255,
	67	.step = 1,
	68	#define BRIGHTNESS_DEF 128
	69	.default_value = BRIGHTNESS_DEF,
	70	},
	71	.set = sd_setbrightness,
	72	.get = sd_getbrightness,
	73	},
	74	{
	75	{
	76	.id = V4L2_CID_CONTRAST,
	77	.type = V4L2_CTRL_TYPE_INTEGER,
	78	.name = "Contrast",
	79	.minimum = 0,
	80	.maximum = 8,
	81	.step = 1,
	82	#define CONTRAST_DEF 1
	83	.default_value = CONTRAST_DEF,
	84	},
	85	.set = sd_setcontrast,
	86	.get = sd_getcontrast,
87	},
88	{
89	{
90	.id = V4L2_CID_HUE,
91	.type = V4L2_CTRL_TYPE_INTEGER,
92	.name = "Hue",
93	.minimum = 0,
94	.maximum = 255,
95	.step = 1,
96	#define HUE_DEF 0
97	.default_value = HUE_DEF,
98	},
99	.set = sd_sethue,
100	.get = sd_gethue,
101	},
102	{
103	{
104	.id = V4L2_CID_SATURATION,
105	.type = V4L2_CTRL_TYPE_INTEGER,
106	.name = "Saturation",
107	.minimum = 0,
108	.maximum = 8,
109	.step = 1,
110	#define COLOR_DEF 1
111	.default_value = COLOR_DEF,
112	},
113	.set = sd_setcolor,
114	.get = sd_getcolor,
115	},
116	{
117	{
118	.id = V4L2_CID_SHARPNESS,
119	.type = V4L2_CTRL_TYPE_INTEGER,
120	.name = "Sharpness",
121	.minimum = 0,
122	.maximum = 255,
123	.step = 1,
124	#define SHARPNESS_DEF 0
125	.default_value = SHARPNESS_DEF,
126	},
127	.set = sd_setsharpness,
128	.get = sd_getsharpness,
129	},
130	};
131
132	static const struct v4l2_pix_format vga_mode[] = {
133	/* (does not work correctly)
134	{176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
135	.bytesperline = 176,
136	.sizeimage = 176 * 144 * 5 / 8 + 590,
137	.colorspace = V4L2_COLORSPACE_JPEG,
138	.priv = 3},
139	*/
140	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
141	.bytesperline = 320,
142	.sizeimage = 320 * 240 * 4 / 8 + 590,
143	.colorspace = V4L2_COLORSPACE_JPEG,
144	.priv = 2},
145	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
146	.bytesperline = 640,
147	.sizeimage = 640 * 480 * 3 / 8 + 590,
148	.colorspace = V4L2_COLORSPACE_JPEG,
149	.priv = 1},
150	};
151
152	/* read <len> bytes to gspca usb_buf */
153	static void reg_r(struct gspca_dev *gspca_dev,
154	u8 req,
155	u16 index,
156	int len)
157	{
158	#if USB_BUF_SZ < 64
159	#error "USB buffer too small"
160	#endif
161	struct usb_device *dev = gspca_dev->dev;
162	int ret;
163
164	if (gspca_dev->usb_err < 0)
165	return;
166	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
167	req,
168	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
169	0x0000, /* value */
170	index,
171	gspca_dev->usb_buf, len,
172	500);
173	PDEBUG(D_USBI, "GET %02x 0000 %04x %02x", req, index,
174	gspca_dev->usb_buf[0]);
175	if (ret < 0) {
133a9fe9	176	pr_err("reg_r err %d\n", ret);
5b0ff8c4 JFM	177	gspca_dev->usb_err = ret;
	178	}
	179	}
	180
	181	static void reg_w(struct gspca_dev *gspca_dev,
	182	u8 req,
	183	u16 value,
	184	u16 index)
	185	{
	186	struct usb_device *dev = gspca_dev->dev;
	187	int ret;
	188
	189	if (gspca_dev->usb_err < 0)
	190	return;
	191	PDEBUG(D_USBO, "SET %02x %04x %04x", req, value, index);
	192	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	193	req,
	194	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	195	value, index,
	196	NULL, 0, 500);
	197	if (ret < 0) {
133a9fe9	198	pr_err("reg_w err %d\n", ret);
5b0ff8c4 JFM	199	gspca_dev->usb_err = ret;
	200	}
	201	}
	202
	203	static void reg_wb(struct gspca_dev *gspca_dev,
	204	u8 req,
	205	u16 value,
	206	u16 index,
	207	u8 byte)
	208	{
	209	struct usb_device *dev = gspca_dev->dev;
	210	int ret;
	211
	212	if (gspca_dev->usb_err < 0)
	213	return;
	214	PDEBUG(D_USBO, "SET %02x %04x %04x %02x", req, value, index, byte);
	215	gspca_dev->usb_buf[0] = byte;
	216	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	217	req,
	218	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	219	value, index,
	220	gspca_dev->usb_buf, 1, 500);
	221	if (ret < 0) {
133a9fe9	222	pr_err("reg_w err %d\n", ret);
5b0ff8c4 JFM	223	gspca_dev->usb_err = ret;
	224	}
	225	}
	226
	227	static void wait_status_0(struct gspca_dev *gspca_dev)
	228	{
	229	int i;
	230
	231	i = 20;
	232	do {
	233	reg_r(gspca_dev, 0x21, 0x0000, 1);
	234	if (gspca_dev->usb_buf[0] == 0)
	235	return;
	236	msleep(30);
	237	} while (--i > 0);
	238	PDEBUG(D_ERR, "wait_status_0 timeout");
	239	gspca_dev->usb_err = -ETIME;
	240	}
	241
	242	static void wait_status_1(struct gspca_dev *gspca_dev)
	243	{
	244	int i;
	245
	246	i = 10;
	247	do {
	248	reg_r(gspca_dev, 0x21, 0x0001, 1);
	249	msleep(10);
	250	if (gspca_dev->usb_buf[0] == 1) {
	251	reg_wb(gspca_dev, 0x21, 0x0000, 0x0001, 0x00);
	252	reg_r(gspca_dev, 0x21, 0x0001, 1);
	253	return;
	254	}
	255	} while (--i > 0);
	256	PDEBUG(D_ERR, "wait_status_1 timeout");
	257	gspca_dev->usb_err = -ETIME;
	258	}
	259
	260	static void setbrightness(struct gspca_dev *gspca_dev)
	261	{
	262	struct sd sd = (struct sd ) gspca_dev;
	263
	264	reg_wb(gspca_dev, 0xc0, 0x0000, 0x00c0, sd->brightness);
	265	}
	266
	267	static void setcontrast(struct gspca_dev *gspca_dev)
	268	{
	269	struct sd sd = (struct sd ) gspca_dev;
	270
	271	reg_wb(gspca_dev, 0xc1, 0x0000, 0x00c1, sd->contrast);
	272	}
	273
	274	static void sethue(struct gspca_dev *gspca_dev)
	275	{
	276	struct sd sd = (struct sd ) gspca_dev;
	277
	278	reg_wb(gspca_dev, 0xc2, 0x0000, 0x0000, sd->hue);
	279	}
	280
	281	static void setcolor(struct gspca_dev *gspca_dev)
	282	{
	283	struct sd sd = (struct sd ) gspca_dev;
	284
	285	reg_wb(gspca_dev, 0xc3, 0x0000, 0x00c3, sd->color);
	286	}
287
288	static void setsharpness(struct gspca_dev *gspca_dev)
289	{
290	struct sd sd = (struct sd ) gspca_dev;
291
292	reg_wb(gspca_dev, 0xc4, 0x0000, 0x00c4, sd->sharpness);
293	}
294
295	/* this function is called at probe time */
296	static int sd_config(struct gspca_dev *gspca_dev,
297	const struct usb_device_id *id)
298	{
299	struct sd sd = (struct sd ) gspca_dev;
300
301	gspca_dev->cam.cam_mode = vga_mode;
302	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
303	gspca_dev->cam.npkt = 128; /* number of packets per ISOC message */
304	/fixme: 256 in ms-win traces/
305
306	sd->brightness = BRIGHTNESS_DEF;
307	sd->contrast = CONTRAST_DEF;
308	sd->hue = HUE_DEF;
309	sd->color = COLOR_DEF;
310	sd->sharpness = SHARPNESS_DEF;
311
312	gspca_dev->nbalt = 4; /* use alternate setting 3 */
313
314	return 0;
315	}
316
317	/* this function is called at probe and resume time */
318	static int sd_init(struct gspca_dev *gspca_dev)
319	{
320	reg_w(gspca_dev, 0x00, 0x0001, 0x2067);
321	reg_w(gspca_dev, 0x00, 0x00d0, 0x206b);
322	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
323	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
324	msleep(8);
325	reg_w(gspca_dev, 0x00, 0x00c0, 0x206b);
326	reg_w(gspca_dev, 0x00, 0x0000, 0x206c);
327	reg_w(gspca_dev, 0x00, 0x0001, 0x2069);
328
329	reg_r(gspca_dev, 0x20, 0x0000, 1);
330	reg_r(gspca_dev, 0x20, 0x0000, 5);
331	reg_r(gspca_dev, 0x23, 0x0000, 64);
332	PDEBUG(D_PROBE, "%s%s", &gspca_dev->usb_buf[0x1c],
333	&gspca_dev->usb_buf[0x30]);
334	reg_r(gspca_dev, 0x23, 0x0001, 64);
335	return gspca_dev->usb_err;
336	}
337
338	/* function called at start time before URB creation */
339	static int sd_isoc_init(struct gspca_dev *gspca_dev)
340	{
341	u8 mode;
342
343	reg_r(gspca_dev, 0x00, 0x2520, 1);
344	wait_status_0(gspca_dev);
345	reg_w(gspca_dev, 0xc5, 0x0003, 0x0000);
346	wait_status_1(gspca_dev);
347
348	wait_status_0(gspca_dev);
349	mode = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv;
350	reg_wb(gspca_dev, 0x25, 0x0000, 0x0004, mode);
351	reg_r(gspca_dev, 0x25, 0x0004, 1);
352	reg_wb(gspca_dev, 0x27, 0x0000, 0x0000, 0x06);
353	reg_r(gspca_dev, 0x27, 0x0000, 1);
354	return gspca_dev->usb_err;
355	}
356
357	/* -- start the camera -- */
358	static int sd_start(struct gspca_dev *gspca_dev)
359	{
360	struct sd sd = (struct sd ) gspca_dev;
361
362	/* initialize the JPEG header */
363	jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
364	0x22); /* JPEG 411 */
365
366	/* the JPEG quality seems to be 82% */
367	jpeg_set_qual(sd->jpeg_hdr, 82);
368
369	/* set the controls */
370	setbrightness(gspca_dev);
371	setcontrast(gspca_dev);
372	sethue(gspca_dev);
373	setcolor(gspca_dev);
374	setsharpness(gspca_dev);
375
376	msleep(5);
377	reg_r(gspca_dev, 0x00, 0x2520, 1);
378	msleep(8);
379
380	/* start the capture */
381	wait_status_0(gspca_dev);
382	reg_w(gspca_dev, 0x31, 0x0000, 0x0004);
383	wait_status_1(gspca_dev);
384	wait_status_0(gspca_dev);
385	msleep(200);
386
387	sd->pkt_seq = 0;
388	return gspca_dev->usb_err;
389	}
390
391	static void sd_stopN(struct gspca_dev *gspca_dev)
392	{
393	/* stop the capture */
394	wait_status_0(gspca_dev);
395	reg_w(gspca_dev, 0x31, 0x0000, 0x0000);
396	wait_status_1(gspca_dev);
397	wait_status_0(gspca_dev);
398	}
399
400	/* move a packet adding 0x00 after 0xff */
401	static void add_packet(struct gspca_dev *gspca_dev,
402	u8 *data,
403	int len)
404	{
405	int i;
406
407	i = 0;
408	do {
409	if (data[i] == 0xff) {
410	gspca_frame_add(gspca_dev, INTER_PACKET,
411	data, i + 1);
412	len -= i;
413	data += i;
414	*data = 0x00;
415	i = 0;
416	}
417	} while (++i < len);
418	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
419	}
420
421	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
422	u8 data, / isoc packet */
423	int len) /* iso packet length */
424	{
425	struct sd sd = (struct sd ) gspca_dev;
426	static const u8 ffd9[] = {0xff, 0xd9};
427
428	/* image packets start with:
429	* 02 8n
430	* with <n> bit:
431	* 0x01: even (0) / odd (1) image
432	* 0x02: end of image when set
433	*/
434	if (len < 3)
435	return; /* empty packet */
436	if (*data == 0x02) {
437	if (data[1] & 0x02) {
438	sd->pkt_seq = !(data[1] & 1);
439	add_packet(gspca_dev, data + 2, len - 2);
440	gspca_frame_add(gspca_dev, LAST_PACKET,
441	ffd9, 2);
442	return;
443	}
444	if ((data[1] & 1) != sd->pkt_seq)
445	goto err;
446	if (gspca_dev->last_packet_type == LAST_PACKET)
447	gspca_frame_add(gspca_dev, FIRST_PACKET,
448	sd->jpeg_hdr, JPEG_HDR_SZ);
449	add_packet(gspca_dev, data + 2, len - 2);
450	return;
451	}
452	err:
453	gspca_dev->last_packet_type = DISCARD_PACKET;
454	}
455
456	static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
457	{
458	struct sd sd = (struct sd ) gspca_dev;
459
460	sd->brightness = val;
461	if (gspca_dev->streaming)
462	setbrightness(gspca_dev);
463	return gspca_dev->usb_err;
464	}
465
466	static int sd_getbrightness(struct gspca_dev gspca_dev, __s32 val)
467	{
468	struct sd sd = (struct sd ) gspca_dev;
469
470	*val = sd->brightness;
471	return 0;
472	}
473
474	static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
475	{
476	struct sd sd = (struct sd ) gspca_dev;
477
478	sd->contrast = val;
479	if (gspca_dev->streaming)
480	setcontrast(gspca_dev);
481	return gspca_dev->usb_err;
482	}
483
484	static int sd_getcontrast(struct gspca_dev gspca_dev, __s32 val)
485	{
486	struct sd sd = (struct sd ) gspca_dev;
487
488	*val = sd->contrast;
489	return 0;
490	}
491
492	static int sd_sethue(struct gspca_dev *gspca_dev, __s32 val)
493	{
494	struct sd sd = (struct sd ) gspca_dev;
495
496	sd->hue = val;
497	if (gspca_dev->streaming)
498	sethue(gspca_dev);
499	return gspca_dev->usb_err;
500	}
501
502	static int sd_gethue(struct gspca_dev gspca_dev, __s32 val)
503	{
504	struct sd sd = (struct sd ) gspca_dev;
505
506	*val = sd->hue;
507	return 0;
508	}
509
510	static int sd_setcolor(struct gspca_dev *gspca_dev, __s32 val)
511	{
512	struct sd sd = (struct sd ) gspca_dev;
513
514	sd->color = val;
515	if (gspca_dev->streaming)
516	setcolor(gspca_dev);
517	return gspca_dev->usb_err;
518	}
519
520	static int sd_getcolor(struct gspca_dev gspca_dev, __s32 val)
521	{
522	struct sd sd = (struct sd ) gspca_dev;
523
524	*val = sd->color;
525	return 0;
526	}
527
528	static int sd_setsharpness(struct gspca_dev *gspca_dev, __s32 val)
529	{
530	struct sd sd = (struct sd ) gspca_dev;
531
532	sd->sharpness = val;
533	if (gspca_dev->streaming)
534	setsharpness(gspca_dev);
535	return gspca_dev->usb_err;
536	}
537
538	static int sd_getsharpness(struct gspca_dev gspca_dev, __s32 val)
539	{
540	struct sd sd = (struct sd ) gspca_dev;
541
542	*val = sd->sharpness;
543	return 0;
544	}
545
546	/* sub-driver description */
547	static const struct sd_desc sd_desc = {
548	.name = MODULE_NAME,
549	.ctrls = sd_ctrls,
550	.nctrls = ARRAY_SIZE(sd_ctrls),
551	.config = sd_config,
552	.init = sd_init,
553	.isoc_init = sd_isoc_init,
554	.start = sd_start,
555	.stopN = sd_stopN,
556	.pkt_scan = sd_pkt_scan,
557	};
558
559	/* -- module initialisation -- */
95c967c1	560	static const struct usb_device_id device_table[] = {
5b0ff8c4 JFM	561	{USB_DEVICE(0x04fc, 0x1528)},
	562	{}
	563	};
	564	MODULE_DEVICE_TABLE(usb, device_table);
	565
	566	/* -- device connect -- */
	567	static int sd_probe(struct usb_interface *intf,
	568	const struct usb_device_id *id)
	569	{
	570	/* the video interface for isochronous transfer is 1 */
	571	if (intf->cur_altsetting->desc.bInterfaceNumber != 1)
	572	return -ENODEV;
	573
	574	return gspca_dev_probe2(intf, id, &sd_desc, sizeof(struct sd),
	575	THIS_MODULE);
	576	}
	577
	578	static struct usb_driver sd_driver = {
	579	.name = MODULE_NAME,
	580	.id_table = device_table,
	581	.probe = sd_probe,
	582	.disconnect = gspca_disconnect,
	583	#ifdef CONFIG_PM
	584	.suspend = gspca_suspend,
	585	.resume = gspca_resume,
	586	#endif
	587	};
	588
	589	/* -- module insert / remove -- */
	590	static int __init sd_mod_init(void)
	591	{
54826437	592	return usb_register(&sd_driver);
5b0ff8c4 JFM	593	}
	594	static void __exit sd_mod_exit(void)
	595	{
	596	usb_deregister(&sd_driver);
5b0ff8c4 JFM	597	}
	598
	599	module_init(sd_mod_init);
	600	module_exit(sd_mod_exit);