[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / gspca / ov534.c

/*
 * ov534/ov772x gspca driver
 * Copyright (C) 2008 Antonio Ospite <ospite@studenti.unina.it>
 * Copyright (C) 2008 Jim Paris <jim@jtan.com>
 *
 * Based on a prototype written by Mark Ferrell <majortrips@gmail.com>
 * USB protocol reverse engineered by Jim Paris <jim@jtan.com>
 * https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
 *
 * 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 MODULE_NAME "ov534"

#include "gspca.h"

#define OV534_REG_ADDRESS	0xf1	/* ? */
#define OV534_REG_SUBADDR	0xf2
#define OV534_REG_WRITE		0xf3
#define OV534_REG_READ		0xf4
#define OV534_REG_OPERATION	0xf5
#define OV534_REG_STATUS	0xf6

#define OV534_OP_WRITE_3	0x37
#define OV534_OP_WRITE_2	0x33
#define OV534_OP_READ_2		0xf9

#define CTRL_TIMEOUT 500

MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver");
MODULE_LICENSE("GPL");

/* specific webcam descriptor */
struct sd {
	struct gspca_dev gspca_dev;	/* !! must be the first item */
	__u32 last_fid;
	__u32 last_pts;
	int frame_rate;
};

/* V4L2 controls supported by the driver */
static struct ctrl sd_ctrls[] = {
};

static struct v4l2_pix_format vga_mode[] = {
	{640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
	 .bytesperline = 640 * 2,
	 .sizeimage = 640 * 480 * 2,
	 .colorspace = V4L2_COLORSPACE_JPEG,
	 .priv = 0},
};

static void ov534_reg_write(struct usb_device *udev, u16 reg, u8 val)
{
	u8 data = val;
	int ret;

	PDEBUG(D_USBO, "reg=0x%04x, val=0%02x", reg, val);
	ret = usb_control_msg(udev,
			      usb_sndctrlpipe(udev, 0),
			      0x1,
			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			      0x0, reg, &data, 1, CTRL_TIMEOUT);
	if (ret < 0)
		PDEBUG(D_ERR, "write failed");
}

static u8 ov534_reg_read(struct usb_device *udev, u16 reg)
{
	u8 data;
	int ret;

	ret = usb_control_msg(udev,
			      usb_rcvctrlpipe(udev, 0),
			      0x1,
			      USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			      0x0, reg, &data, 1, CTRL_TIMEOUT);
	PDEBUG(D_USBI, "reg=0x%04x, data=0x%02x", reg, data);
	if (ret < 0)
		PDEBUG(D_ERR, "read failed");
	return data;
}

/* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
 * (direction and output)? */
static void ov534_set_led(struct usb_device *udev, int status)
{
	u8 data;

	PDEBUG(D_CONF, "led status: %d", status);

	data = ov534_reg_read(udev, 0x21);
	data |= 0x80;
	ov534_reg_write(udev, 0x21, data);

	data = ov534_reg_read(udev, 0x23);
	if (status)
		data |= 0x80;
	else
		data &= ~(0x80);

	ov534_reg_write(udev, 0x23, data);
}

static int sccb_check_status(struct usb_device *udev)
{
	u8 data;
	int i;

	for (i = 0; i < 5; i++) {
		data = ov534_reg_read(udev, OV534_REG_STATUS);

		switch (data) {
		case 0x00:
			return 1;
		case 0x04:
			return 0;
		case 0x03:
			break;
		default:
			PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5\n",
			       data, i + 1);
		}
	}
	return 0;
}

static void sccb_reg_write(struct usb_device *udev, u16 reg, u8 val)
{
	PDEBUG(D_USBO, "reg: 0x%04x, val: 0x%02x", reg, val);
	ov534_reg_write(udev, OV534_REG_SUBADDR, reg);
	ov534_reg_write(udev, OV534_REG_WRITE, val);
	ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_WRITE_3);

	if (!sccb_check_status(udev))
		PDEBUG(D_ERR, "sccb_reg_write failed");
}

#ifdef GSPCA_DEBUG
static u8 sccb_reg_read(struct usb_device *udev, u16 reg)
{
	ov534_reg_write(udev, OV534_REG_SUBADDR, reg);
	ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
	if (!sccb_check_status(udev))
		PDEBUG(D_ERR, "sccb_reg_read failed 1");

	ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_READ_2);
	if (!sccb_check_status(udev))
		PDEBUG(D_ERR, "sccb_reg_read failed 2");

	return ov534_reg_read(udev, OV534_REG_READ);
}
#endif

static const __u8 ov534_reg_initdata[][2] = {
	{ 0xe7, 0x3a },

	{ OV534_REG_ADDRESS, 0x42 }, /* select OV772x sensor */

	{ 0xc2, 0x0c },
	{ 0x88, 0xf8 },
	{ 0xc3, 0x69 },
	{ 0x89, 0xff },
	{ 0x76, 0x03 },
	{ 0x92, 0x01 },
	{ 0x93, 0x18 },
	{ 0x94, 0x10 },
	{ 0x95, 0x10 },
	{ 0xe2, 0x00 },
	{ 0xe7, 0x3e },

	{ 0x96, 0x00 },

	{ 0x97, 0x20 },
	{ 0x97, 0x20 },
	{ 0x97, 0x20 },
	{ 0x97, 0x0a },
	{ 0x97, 0x3f },
	{ 0x97, 0x4a },
	{ 0x97, 0x20 },
	{ 0x97, 0x15 },
	{ 0x97, 0x0b },

	{ 0x8e, 0x40 },
	{ 0x1f, 0x81 },
	{ 0x34, 0x05 },
	{ 0xe3, 0x04 },
	{ 0x88, 0x00 },
	{ 0x89, 0x00 },
	{ 0x76, 0x00 },
	{ 0xe7, 0x2e },
	{ 0x31, 0xf9 },
	{ 0x25, 0x42 },
	{ 0x21, 0xf0 },

	{ 0x1c, 0x00 },
	{ 0x1d, 0x40 },
	{ 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
	{ 0x1d, 0x00 }, /* payload size */
	{ 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
	{ 0x1d, 0x58 }, /* frame size */
	{ 0x1d, 0x00 }, /* frame size */

	{ 0x1c, 0x0a },
	{ 0x1d, 0x08 }, /* turn on UVC header */
	{ 0x1d, 0x0e }, /* .. */

	{ 0x8d, 0x1c },
	{ 0x8e, 0x80 },
	{ 0xe5, 0x04 },

	{ 0xc0, 0x50 },
	{ 0xc1, 0x3c },
	{ 0xc2, 0x0c },
};

static const __u8 ov772x_reg_initdata[][2] = {
	{ 0x12, 0x80 },
	{ 0x11, 0x01 },

	{ 0x3d, 0x03 },
	{ 0x17, 0x26 },
	{ 0x18, 0xa0 },
	{ 0x19, 0x07 },
	{ 0x1a, 0xf0 },
	{ 0x32, 0x00 },
	{ 0x29, 0xa0 },
	{ 0x2c, 0xf0 },
	{ 0x65, 0x20 },
	{ 0x11, 0x01 },
	{ 0x42, 0x7f },
	{ 0x63, 0xe0 },
	{ 0x64, 0xff },
	{ 0x66, 0x00 },
	{ 0x13, 0xf0 },
	{ 0x0d, 0x41 },
	{ 0x0f, 0xc5 },
	{ 0x14, 0x11 },

	{ 0x22, 0x7f },
	{ 0x23, 0x03 },
	{ 0x24, 0x40 },
	{ 0x25, 0x30 },
	{ 0x26, 0xa1 },
	{ 0x2a, 0x00 },
	{ 0x2b, 0x00 },
	{ 0x6b, 0xaa },
	{ 0x13, 0xff },

	{ 0x90, 0x05 },
	{ 0x91, 0x01 },
	{ 0x92, 0x03 },
	{ 0x93, 0x00 },
	{ 0x94, 0x60 },
	{ 0x95, 0x3c },
	{ 0x96, 0x24 },
	{ 0x97, 0x1e },
	{ 0x98, 0x62 },
	{ 0x99, 0x80 },
	{ 0x9a, 0x1e },
	{ 0x9b, 0x08 },
	{ 0x9c, 0x20 },
	{ 0x9e, 0x81 },

	{ 0xa6, 0x04 },
	{ 0x7e, 0x0c },
	{ 0x7f, 0x16 },
	{ 0x80, 0x2a },
	{ 0x81, 0x4e },
	{ 0x82, 0x61 },
	{ 0x83, 0x6f },
	{ 0x84, 0x7b },
	{ 0x85, 0x86 },
	{ 0x86, 0x8e },
	{ 0x87, 0x97 },
	{ 0x88, 0xa4 },
	{ 0x89, 0xaf },
	{ 0x8a, 0xc5 },
	{ 0x8b, 0xd7 },
	{ 0x8c, 0xe8 },
	{ 0x8d, 0x20 },

	{ 0x0c, 0x90 },

	{ 0x2b, 0x00 },
	{ 0x22, 0x7f },
	{ 0x23, 0x03 },
	{ 0x11, 0x01 },
	{ 0x0c, 0xd0 },
	{ 0x64, 0xff },
	{ 0x0d, 0x41 },

	{ 0x14, 0x41 },
	{ 0x0e, 0xcd },
	{ 0xac, 0xbf },
	{ 0x8e, 0x00 },
	{ 0x0c, 0xd0 }
};

/* set framerate */
static void ov534_set_frame_rate(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *) gspca_dev;
	int fr = sd->frame_rate;

	switch (fr) {
	case 50:
		sccb_reg_write(gspca_dev->dev, 0x11, 0x01);
		sccb_reg_write(gspca_dev->dev, 0x0d, 0x41);
		ov534_reg_write(gspca_dev->dev, 0xe5, 0x02);
		break;
	case 40:
		sccb_reg_write(gspca_dev->dev, 0x11, 0x02);
		sccb_reg_write(gspca_dev->dev, 0x0d, 0xc1);
		ov534_reg_write(gspca_dev->dev, 0xe5, 0x04);
		break;
/*	case 30: */
	default:
		fr = 30;
		sccb_reg_write(gspca_dev->dev, 0x11, 0x04);
		sccb_reg_write(gspca_dev->dev, 0x0d, 0x81);
		ov534_reg_write(gspca_dev->dev, 0xe5, 0x02);
		break;
	case 15:
		sccb_reg_write(gspca_dev->dev, 0x11, 0x03);
		sccb_reg_write(gspca_dev->dev, 0x0d, 0x41);
		ov534_reg_write(gspca_dev->dev, 0xe5, 0x04);
		break;
	}

	sd->frame_rate = fr;
	PDEBUG(D_PROBE, "frame_rate: %d", fr);
}

/* setup method */
static void ov534_setup(struct usb_device *udev)
{
	int i;

	/* Initialize bridge chip */
	for (i = 0; i < ARRAY_SIZE(ov534_reg_initdata); i++)
		ov534_reg_write(udev, ov534_reg_initdata[i][0],
				ov534_reg_initdata[i][1]);

	PDEBUG(D_PROBE, "sensor is ov%02x%02x",
		sccb_reg_read(udev, 0x0a), sccb_reg_read(udev, 0x0b));

	ov534_set_led(udev, 1);

	/* Initialize sensor */
	for (i = 0; i < ARRAY_SIZE(ov772x_reg_initdata); i++)
		sccb_reg_write(udev, ov772x_reg_initdata[i][0],
			       ov772x_reg_initdata[i][1]);

	ov534_reg_write(udev, 0xe0, 0x09);
	ov534_set_led(udev, 0);
}

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

	cam = &gspca_dev->cam;

	cam->epaddr = 0x01;
	cam->cam_mode = vga_mode;
	cam->nmodes = ARRAY_SIZE(vga_mode);

	cam->bulk_size = 16384;
	cam->bulk_nurbs = 2;

	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	ov534_setup(gspca_dev->dev);
	ov534_set_frame_rate(gspca_dev);

	return 0;
}

static int sd_start(struct gspca_dev *gspca_dev)
{
	/* start streaming data */
	ov534_set_led(gspca_dev->dev, 1);
	ov534_reg_write(gspca_dev->dev, 0xe0, 0x00);

	return 0;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	/* stop streaming data */
	ov534_reg_write(gspca_dev->dev, 0xe0, 0x09);
	ov534_set_led(gspca_dev->dev, 0);
}

/* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
#define UVC_STREAM_EOH	(1 << 7)
#define UVC_STREAM_ERR	(1 << 6)
#define UVC_STREAM_STI	(1 << 5)
#define UVC_STREAM_RES	(1 << 4)
#define UVC_STREAM_SCR	(1 << 3)
#define UVC_STREAM_PTS	(1 << 2)
#define UVC_STREAM_EOF	(1 << 1)
#define UVC_STREAM_FID	(1 << 0)

static void sd_pkt_scan(struct gspca_dev *gspca_dev, struct gspca_frame *frame,
			__u8 *data, int len)
{
	struct sd *sd = (struct sd *) gspca_dev;
	__u32 this_pts;
	int this_fid;
	int remaining_len = len;
	__u8 *next_data = data;

scan_next:
	if (remaining_len <= 0)
		return;

	data = next_data;
	len = min(remaining_len, 2048);
	remaining_len -= len;
	next_data += len;

	/* Payloads are prefixed with a UVC-style header.  We
	   consider a frame to start when the FID toggles, or the PTS
	   changes.  A frame ends when EOF is set, and we've received
	   the correct number of bytes. */

	/* Verify UVC header.  Header length is always 12 */
	if (data[0] != 12 || len < 12) {
		PDEBUG(D_PACK, "bad header");
		goto discard;
	}

	/* Check errors */
	if (data[1] & UVC_STREAM_ERR) {
		PDEBUG(D_PACK, "payload error");
		goto discard;
	}

	/* Extract PTS and FID */
	if (!(data[1] & UVC_STREAM_PTS)) {
		PDEBUG(D_PACK, "PTS not present");
		goto discard;
	}
	this_pts = (data[5] << 24) | (data[4] << 16) | (data[3] << 8) | data[2];
	this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;

	/* If PTS or FID has changed, start a new frame. */
	if (this_pts != sd->last_pts || this_fid != sd->last_fid) {
		gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0);
		sd->last_pts = this_pts;
		sd->last_fid = this_fid;
	}

	/* Add the data from this payload */
	gspca_frame_add(gspca_dev, INTER_PACKET, frame,
				data + 12, len - 12);

	/* If this packet is marked as EOF, end the frame */
	if (data[1] & UVC_STREAM_EOF) {
		sd->last_pts = 0;

		if ((frame->data_end - frame->data) !=
		    (gspca_dev->width * gspca_dev->height * 2)) {
			PDEBUG(D_PACK, "short frame");
			goto discard;
		}

		gspca_frame_add(gspca_dev, LAST_PACKET, frame, NULL, 0);
	}

	/* Done this payload */
	goto scan_next;

discard:
	/* Discard data until a new frame starts. */
	gspca_frame_add(gspca_dev, DISCARD_PACKET, frame, NULL, 0);
	goto scan_next;
}

/* get stream parameters (framerate) */
int sd_get_streamparm(struct gspca_dev *gspca_dev,
		      struct v4l2_streamparm *parm)
{
	struct v4l2_captureparm *cp = &parm->parm.capture;
	struct v4l2_fract *tpf = &cp->timeperframe;
	struct sd *sd = (struct sd *) gspca_dev;

	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	cp->capability |= V4L2_CAP_TIMEPERFRAME;
	tpf->numerator = 1;
	tpf->denominator = sd->frame_rate;

	return 0;
}

/* set stream parameters (framerate) */
int sd_set_streamparm(struct gspca_dev *gspca_dev,
		      struct v4l2_streamparm *parm)
{
	struct v4l2_captureparm *cp = &parm->parm.capture;
	struct v4l2_fract *tpf = &cp->timeperframe;
	struct sd *sd = (struct sd *) gspca_dev;

	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	/* Set requested framerate */
	sd->frame_rate = tpf->denominator / tpf->numerator;
	ov534_set_frame_rate(gspca_dev);

	/* Return the actual framerate */
	tpf->numerator = 1;
	tpf->denominator = sd->frame_rate;

	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,
	.start    = sd_start,
	.stopN    = sd_stopN,
	.pkt_scan = sd_pkt_scan,
	.get_streamparm = sd_get_streamparm,
	.set_streamparm = sd_set_streamparm,
};

/* -- module initialisation -- */
static const __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x06f8, 0x3002)},	/* Hercules Blog Webcam */
	{USB_DEVICE(0x06f8, 0x3003)},	/* Hercules Dualpix HD Weblog */
	{USB_DEVICE(0x1415, 0x2000)},	/* Sony HD Eye for PS3 (SLEH 00201) */
	{}
};

MODULE_DEVICE_TABLE(usb, device_table);

/* -- device connect -- */
static int sd_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	return gspca_dev_probe(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)
{
	if (usb_register(&sd_driver) < 0)
		return -1;
	PDEBUG(D_PROBE, "registered");
	return 0;
}

static void __exit sd_mod_exit(void)
{
	usb_deregister(&sd_driver);
	PDEBUG(D_PROBE, "deregistered");
}

module_init(sd_mod_init);
module_exit(sd_mod_exit);
Commit	Line	Data
fbb4c6d2 AO	1	/*
	2	* ov534/ov772x gspca driver
	3	* Copyright (C) 2008 Antonio Ospite <ospite@studenti.unina.it>
0f7a50b2	4	* Copyright (C) 2008 Jim Paris <jim@jtan.com>
fbb4c6d2 AO	5	*
	6	* Based on a prototype written by Mark Ferrell <majortrips@gmail.com>
	7	* USB protocol reverse engineered by Jim Paris <jim@jtan.com>
	8	* https://jim.sh/svn/jim/devl/playstation/ps3/eye/test/
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	23	*/
	24
	25	#define MODULE_NAME "ov534"
	26
	27	#include "gspca.h"
	28
	29	#define OV534_REG_ADDRESS 0xf1 /* ? */
	30	#define OV534_REG_SUBADDR 0xf2
	31	#define OV534_REG_WRITE 0xf3
	32	#define OV534_REG_READ 0xf4
	33	#define OV534_REG_OPERATION 0xf5
	34	#define OV534_REG_STATUS 0xf6
	35
	36	#define OV534_OP_WRITE_3 0x37
	37	#define OV534_OP_WRITE_2 0x33
	38	#define OV534_OP_READ_2 0xf9
	39
	40	#define CTRL_TIMEOUT 500
	41
	42	MODULE_AUTHOR("Antonio Ospite <ospite@studenti.unina.it>");
	43	MODULE_DESCRIPTION("GSPCA/OV534 USB Camera Driver");
	44	MODULE_LICENSE("GPL");
	45
fbb4c6d2 AO	46	/* specific webcam descriptor */
	47	struct sd {
	48	struct gspca_dev gspca_dev; /* !! must be the first item */
8c252050 JFM	49	__u32 last_fid;
8c252050 JFM	50	__u32 last_pts;
11d9f25d	51	int frame_rate;
fbb4c6d2 AO	52	};
	53
	54	/* V4L2 controls supported by the driver */
	55	static struct ctrl sd_ctrls[] = {
	56	};
	57
	58	static struct v4l2_pix_format vga_mode[] = {
	59	{640, 480, V4L2_PIX_FMT_YUYV, V4L2_FIELD_NONE,
	60	.bytesperline = 640 * 2,
	61	.sizeimage = 640 * 480 * 2,
	62	.colorspace = V4L2_COLORSPACE_JPEG,
	63	.priv = 0},
	64	};
	65
9e1e7b06	66	static void ov534_reg_write(struct usb_device *udev, u16 reg, u8 val)
fbb4c6d2	67	{
9e1e7b06	68	u8 data = val;
fbb4c6d2 AO	69	int ret;
fbb4c6d2 AO	70
9e1e7b06	71	PDEBUG(D_USBO, "reg=0x%04x, val=0%02x", reg, val);
fbb4c6d2 AO	72	ret = usb_control_msg(udev,
	73	usb_sndctrlpipe(udev, 0),
	74	0x1,
	75	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	76	0x0, reg, &data, 1, CTRL_TIMEOUT);
	77	if (ret < 0)
	78	PDEBUG(D_ERR, "write failed");
	79	}
	80
9e1e7b06	81	static u8 ov534_reg_read(struct usb_device *udev, u16 reg)
fbb4c6d2	82	{
9e1e7b06	83	u8 data;
fbb4c6d2 AO	84	int ret;
	85
	86	ret = usb_control_msg(udev,
	87	usb_rcvctrlpipe(udev, 0),
	88	0x1,
	89	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	90	0x0, reg, &data, 1, CTRL_TIMEOUT);
9e1e7b06	91	PDEBUG(D_USBI, "reg=0x%04x, data=0x%02x", reg, data);
fbb4c6d2 AO	92	if (ret < 0)
	93	PDEBUG(D_ERR, "read failed");
	94	return data;
	95	}
	96
fbb4c6d2 AO	97	/* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
	98	* (direction and output)? */
	99	static void ov534_set_led(struct usb_device *udev, int status)
	100	{
9e1e7b06	101	u8 data;
fbb4c6d2 AO	102
	103	PDEBUG(D_CONF, "led status: %d", status);
	104
	105	data = ov534_reg_read(udev, 0x21);
	106	data \|= 0x80;
	107	ov534_reg_write(udev, 0x21, data);
	108
	109	data = ov534_reg_read(udev, 0x23);
	110	if (status)
	111	data \|= 0x80;
	112	else
	113	data &= ~(0x80);
	114
	115	ov534_reg_write(udev, 0x23, data);
	116	}
	117
	118	static int sccb_check_status(struct usb_device *udev)
	119	{
9e1e7b06	120	u8 data;
fbb4c6d2 AO	121	int i;
	122
	123	for (i = 0; i < 5; i++) {
	124	data = ov534_reg_read(udev, OV534_REG_STATUS);
	125
9e1e7b06	126	switch (data) {
fbb4c6d2 AO	127	case 0x00:
	128	return 1;
	129	case 0x04:
	130	return 0;
	131	case 0x03:
	132	break;
	133	default:
	134	PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5\n",
	135	data, i + 1);
	136	}
	137	}
	138	return 0;
	139	}
	140
9e1e7b06	141	static void sccb_reg_write(struct usb_device *udev, u16 reg, u8 val)
fbb4c6d2	142	{
9e1e7b06	143	PDEBUG(D_USBO, "reg: 0x%04x, val: 0x%02x", reg, val);
fbb4c6d2 AO	144	ov534_reg_write(udev, OV534_REG_SUBADDR, reg);
	145	ov534_reg_write(udev, OV534_REG_WRITE, val);
	146	ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
	147
	148	if (!sccb_check_status(udev))
	149	PDEBUG(D_ERR, "sccb_reg_write failed");
	150	}
	151
1dc87b6e	152	#ifdef GSPCA_DEBUG
e6e48378 AO	153	static u8 sccb_reg_read(struct usb_device *udev, u16 reg)
	154	{
	155	ov534_reg_write(udev, OV534_REG_SUBADDR, reg);
	156	ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
	157	if (!sccb_check_status(udev))
	158	PDEBUG(D_ERR, "sccb_reg_read failed 1");
	159
	160	ov534_reg_write(udev, OV534_REG_OPERATION, OV534_OP_READ_2);
	161	if (!sccb_check_status(udev))
	162	PDEBUG(D_ERR, "sccb_reg_read failed 2");
	163
	164	return ov534_reg_read(udev, OV534_REG_READ);
	165	}
1dc87b6e	166	#endif
e6e48378	167
47dfd21f JP	168	static const __u8 ov534_reg_initdata[][2] = {
	169	{ 0xe7, 0x3a },
	170
	171	{ OV534_REG_ADDRESS, 0x42 }, /* select OV772x sensor */
	172
	173	{ 0xc2, 0x0c },
	174	{ 0x88, 0xf8 },
	175	{ 0xc3, 0x69 },
	176	{ 0x89, 0xff },
	177	{ 0x76, 0x03 },
	178	{ 0x92, 0x01 },
	179	{ 0x93, 0x18 },
	180	{ 0x94, 0x10 },
	181	{ 0x95, 0x10 },
	182	{ 0xe2, 0x00 },
	183	{ 0xe7, 0x3e },
	184
47dfd21f JP	185	{ 0x96, 0x00 },
	186
	187	{ 0x97, 0x20 },
	188	{ 0x97, 0x20 },
	189	{ 0x97, 0x20 },
	190	{ 0x97, 0x0a },
	191	{ 0x97, 0x3f },
	192	{ 0x97, 0x4a },
	193	{ 0x97, 0x20 },
	194	{ 0x97, 0x15 },
	195	{ 0x97, 0x0b },
	196
	197	{ 0x8e, 0x40 },
	198	{ 0x1f, 0x81 },
	199	{ 0x34, 0x05 },
	200	{ 0xe3, 0x04 },
	201	{ 0x88, 0x00 },
	202	{ 0x89, 0x00 },
	203	{ 0x76, 0x00 },
	204	{ 0xe7, 0x2e },
	205	{ 0x31, 0xf9 },
	206	{ 0x25, 0x42 },
	207	{ 0x21, 0xf0 },
	208
	209	{ 0x1c, 0x00 },
	210	{ 0x1d, 0x40 },
0f7a50b2 JP	211	{ 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
0f7a50b2 JP	212	{ 0x1d, 0x00 }, /* payload size */
5ea9c4de JP	213	{ 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
	214	{ 0x1d, 0x58 }, /* frame size */
	215	{ 0x1d, 0x00 }, /* frame size */
47dfd21f	216
c06eb619 JP	217	{ 0x1c, 0x0a },
	218	{ 0x1d, 0x08 }, /* turn on UVC header */
	219	{ 0x1d, 0x0e }, /* .. */
	220
47dfd21f JP	221	{ 0x8d, 0x1c },
	222	{ 0x8e, 0x80 },
	223	{ 0xe5, 0x04 },
	224
	225	{ 0xc0, 0x50 },
	226	{ 0xc1, 0x3c },
	227	{ 0xc2, 0x0c },
	228	};
fbb4c6d2	229
47dfd21f JP	230	static const __u8 ov772x_reg_initdata[][2] = {
	231	{ 0x12, 0x80 },
	232	{ 0x11, 0x01 },
	233
	234	{ 0x3d, 0x03 },
	235	{ 0x17, 0x26 },
	236	{ 0x18, 0xa0 },
	237	{ 0x19, 0x07 },
	238	{ 0x1a, 0xf0 },
	239	{ 0x32, 0x00 },
	240	{ 0x29, 0xa0 },
	241	{ 0x2c, 0xf0 },
	242	{ 0x65, 0x20 },
	243	{ 0x11, 0x01 },
	244	{ 0x42, 0x7f },
	245	{ 0x63, 0xe0 },
	246	{ 0x64, 0xff },
	247	{ 0x66, 0x00 },
	248	{ 0x13, 0xf0 },
	249	{ 0x0d, 0x41 },
	250	{ 0x0f, 0xc5 },
	251	{ 0x14, 0x11 },
	252
	253	{ 0x22, 0x7f },
	254	{ 0x23, 0x03 },
	255	{ 0x24, 0x40 },
	256	{ 0x25, 0x30 },
	257	{ 0x26, 0xa1 },
	258	{ 0x2a, 0x00 },
	259	{ 0x2b, 0x00 },
	260	{ 0x6b, 0xaa },
	261	{ 0x13, 0xff },
	262
	263	{ 0x90, 0x05 },
	264	{ 0x91, 0x01 },
	265	{ 0x92, 0x03 },
	266	{ 0x93, 0x00 },
	267	{ 0x94, 0x60 },
	268	{ 0x95, 0x3c },
	269	{ 0x96, 0x24 },
	270	{ 0x97, 0x1e },
	271	{ 0x98, 0x62 },
	272	{ 0x99, 0x80 },
	273	{ 0x9a, 0x1e },
	274	{ 0x9b, 0x08 },
	275	{ 0x9c, 0x20 },
	276	{ 0x9e, 0x81 },
	277
	278	{ 0xa6, 0x04 },
	279	{ 0x7e, 0x0c },
	280	{ 0x7f, 0x16 },
	281	{ 0x80, 0x2a },
	282	{ 0x81, 0x4e },
	283	{ 0x82, 0x61 },
	284	{ 0x83, 0x6f },
	285	{ 0x84, 0x7b },
	286	{ 0x85, 0x86 },
	287	{ 0x86, 0x8e },
	288	{ 0x87, 0x97 },
	289	{ 0x88, 0xa4 },
	290	{ 0x89, 0xaf },
	291	{ 0x8a, 0xc5 },
	292	{ 0x8b, 0xd7 },
	293	{ 0x8c, 0xe8 },
294	{ 0x8d, 0x20 },
295
296	{ 0x0c, 0x90 },
297
298	{ 0x2b, 0x00 },
299	{ 0x22, 0x7f },
300	{ 0x23, 0x03 },
301	{ 0x11, 0x01 },
302	{ 0x0c, 0xd0 },
303	{ 0x64, 0xff },
304	{ 0x0d, 0x41 },
305
306	{ 0x14, 0x41 },
307	{ 0x0e, 0xcd },
308	{ 0xac, 0xbf },
309	{ 0x8e, 0x00 },
310	{ 0x0c, 0xd0 }
311	};
fbb4c6d2	312
11d9f25d JP	313	/* set framerate */
	314	static void ov534_set_frame_rate(struct gspca_dev *gspca_dev)
	315	{
	316	struct sd sd = (struct sd ) gspca_dev;
	317	int fr = sd->frame_rate;
	318
	319	switch (fr) {
	320	case 50:
	321	sccb_reg_write(gspca_dev->dev, 0x11, 0x01);
	322	sccb_reg_write(gspca_dev->dev, 0x0d, 0x41);
	323	ov534_reg_write(gspca_dev->dev, 0xe5, 0x02);
	324	break;
	325	case 40:
	326	sccb_reg_write(gspca_dev->dev, 0x11, 0x02);
	327	sccb_reg_write(gspca_dev->dev, 0x0d, 0xc1);
	328	ov534_reg_write(gspca_dev->dev, 0xe5, 0x04);
	329	break;
	330	/* case 30: */
	331	default:
	332	fr = 30;
	333	sccb_reg_write(gspca_dev->dev, 0x11, 0x04);
	334	sccb_reg_write(gspca_dev->dev, 0x0d, 0x81);
	335	ov534_reg_write(gspca_dev->dev, 0xe5, 0x02);
	336	break;
	337	case 15:
	338	sccb_reg_write(gspca_dev->dev, 0x11, 0x03);
	339	sccb_reg_write(gspca_dev->dev, 0x0d, 0x41);
	340	ov534_reg_write(gspca_dev->dev, 0xe5, 0x04);
	341	break;
	342	}
	343
	344	sd->frame_rate = fr;
	345	PDEBUG(D_PROBE, "frame_rate: %d", fr);
	346	}
fbb4c6d2	347
47dfd21f JP	348	/* setup method */
	349	static void ov534_setup(struct usb_device *udev)
	350	{
	351	int i;
fbb4c6d2	352
47dfd21f JP	353	/* Initialize bridge chip */
	354	for (i = 0; i < ARRAY_SIZE(ov534_reg_initdata); i++)
	355	ov534_reg_write(udev, ov534_reg_initdata[i][0],
	356	ov534_reg_initdata[i][1]);
fbb4c6d2	357
e6e48378 AO	358	PDEBUG(D_PROBE, "sensor is ov%02x%02x",
	359	sccb_reg_read(udev, 0x0a), sccb_reg_read(udev, 0x0b));
	360
fbb4c6d2 AO	361	ov534_set_led(udev, 1);
fbb4c6d2 AO	362
47dfd21f JP	363	/* Initialize sensor */
	364	for (i = 0; i < ARRAY_SIZE(ov772x_reg_initdata); i++)
	365	sccb_reg_write(udev, ov772x_reg_initdata[i][0],
	366	ov772x_reg_initdata[i][1]);
fbb4c6d2 AO	367
	368	ov534_reg_write(udev, 0xe0, 0x09);
	369	ov534_set_led(udev, 0);
	370	}
	371
	372	/* this function is called at probe time */
	373	static int sd_config(struct gspca_dev *gspca_dev,
	374	const struct usb_device_id *id)
	375	{
	376	struct cam *cam;
	377
	378	cam = &gspca_dev->cam;
	379
	380	cam->epaddr = 0x01;
	381	cam->cam_mode = vga_mode;
	382	cam->nmodes = ARRAY_SIZE(vga_mode);
	383
0f7a50b2	384	cam->bulk_size = 16384;
fbb4c6d2 AO	385	cam->bulk_nurbs = 2;
fbb4c6d2 AO	386
fbb4c6d2 AO	387	return 0;
	388	}
	389
	390	/* this function is called at probe and resume time */
	391	static int sd_init(struct gspca_dev *gspca_dev)
	392	{
3adba442	393	ov534_setup(gspca_dev->dev);
11d9f25d	394	ov534_set_frame_rate(gspca_dev);
fbb4c6d2 AO	395
	396	return 0;
	397	}
	398
	399	static int sd_start(struct gspca_dev *gspca_dev)
	400	{
fbb4c6d2 AO	401	/* start streaming data */
	402	ov534_set_led(gspca_dev->dev, 1);
	403	ov534_reg_write(gspca_dev->dev, 0xe0, 0x00);
	404
	405	return 0;
	406	}
	407
	408	static void sd_stopN(struct gspca_dev *gspca_dev)
	409	{
	410	/* stop streaming data */
	411	ov534_reg_write(gspca_dev->dev, 0xe0, 0x09);
	412	ov534_set_led(gspca_dev->dev, 0);
	413	}
	414
fb139224 JP	415	/* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
	416	#define UVC_STREAM_EOH (1 << 7)
	417	#define UVC_STREAM_ERR (1 << 6)
	418	#define UVC_STREAM_STI (1 << 5)
	419	#define UVC_STREAM_RES (1 << 4)
	420	#define UVC_STREAM_SCR (1 << 3)
	421	#define UVC_STREAM_PTS (1 << 2)
	422	#define UVC_STREAM_EOF (1 << 1)
	423	#define UVC_STREAM_FID (1 << 0)
	424
fbb4c6d2 AO	425	static void sd_pkt_scan(struct gspca_dev gspca_dev, struct gspca_frame frame,
	426	__u8 *data, int len)
	427	{
8c252050	428	struct sd sd = (struct sd ) gspca_dev;
fb139224	429	__u32 this_pts;
fb139224	430	int this_fid;
0f7a50b2 JP	431	int remaining_len = len;
	432	__u8 *next_data = data;
	433
	434	scan_next:
	435	if (remaining_len <= 0)
	436	return;
	437
	438	data = next_data;
	439	len = min(remaining_len, 2048);
	440	remaining_len -= len;
	441	next_data += len;
fb139224	442
15e3209a	443	/* Payloads are prefixed with a UVC-style header. We
fb139224 JP	444	consider a frame to start when the FID toggles, or the PTS
	445	changes. A frame ends when EOF is set, and we've received
	446	the correct number of bytes. */
	447
	448	/* Verify UVC header. Header length is always 12 */
	449	if (data[0] != 12 \|\| len < 12) {
	450	PDEBUG(D_PACK, "bad header");
	451	goto discard;
	452	}
	453
	454	/* Check errors */
	455	if (data[1] & UVC_STREAM_ERR) {
	456	PDEBUG(D_PACK, "payload error");
	457	goto discard;
	458	}
	459
	460	/* Extract PTS and FID */
	461	if (!(data[1] & UVC_STREAM_PTS)) {
	462	PDEBUG(D_PACK, "PTS not present");
	463	goto discard;
	464	}
	465	this_pts = (data[5] << 24) \| (data[4] << 16) \| (data[3] << 8) \| data[2];
	466	this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;
	467
	468	/* If PTS or FID has changed, start a new frame. */
8c252050	469	if (this_pts != sd->last_pts \|\| this_fid != sd->last_fid) {
fb139224	470	gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0);
8c252050 JFM	471	sd->last_pts = this_pts;
8c252050 JFM	472	sd->last_fid = this_fid;
fb139224 JP	473	}
	474
	475	/* Add the data from this payload */
	476	gspca_frame_add(gspca_dev, INTER_PACKET, frame,
	477	data + 12, len - 12);
	478
	479	/* If this packet is marked as EOF, end the frame */
	480	if (data[1] & UVC_STREAM_EOF) {
8c252050	481	sd->last_pts = 0;
fb139224 JP	482
	483	if ((frame->data_end - frame->data) !=
	484	(gspca_dev->width * gspca_dev->height * 2)) {
	485	PDEBUG(D_PACK, "short frame");
	486	goto discard;
	487	}
	488
	489	gspca_frame_add(gspca_dev, LAST_PACKET, frame, NULL, 0);
	490	}
	491
0f7a50b2 JP	492	/* Done this payload */
0f7a50b2 JP	493	goto scan_next;
fb139224 JP	494
	495	discard:
	496	/* Discard data until a new frame starts. */
	497	gspca_frame_add(gspca_dev, DISCARD_PACKET, frame, NULL, 0);
0f7a50b2	498	goto scan_next;
fbb4c6d2 AO	499	}
fbb4c6d2 AO	500
11d9f25d JP	501	/* get stream parameters (framerate) */
	502	int sd_get_streamparm(struct gspca_dev *gspca_dev,
	503	struct v4l2_streamparm *parm)
	504	{
	505	struct v4l2_captureparm *cp = &parm->parm.capture;
	506	struct v4l2_fract *tpf = &cp->timeperframe;
	507	struct sd sd = (struct sd ) gspca_dev;
	508
	509	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	510	return -EINVAL;
	511
	512	cp->capability \|= V4L2_CAP_TIMEPERFRAME;
	513	tpf->numerator = 1;
	514	tpf->denominator = sd->frame_rate;
	515
	516	return 0;
	517	}
	518
	519	/* set stream parameters (framerate) */
	520	int sd_set_streamparm(struct gspca_dev *gspca_dev,
	521	struct v4l2_streamparm *parm)
	522	{
	523	struct v4l2_captureparm *cp = &parm->parm.capture;
	524	struct v4l2_fract *tpf = &cp->timeperframe;
	525	struct sd sd = (struct sd ) gspca_dev;
	526
	527	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	528	return -EINVAL;
	529
	530	/* Set requested framerate */
	531	sd->frame_rate = tpf->denominator / tpf->numerator;
	532	ov534_set_frame_rate(gspca_dev);
	533
	534	/* Return the actual framerate */
	535	tpf->numerator = 1;
	536	tpf->denominator = sd->frame_rate;
	537
	538	return 0;
	539	}
	540
fbb4c6d2 AO	541	/* sub-driver description */
	542	static const struct sd_desc sd_desc = {
	543	.name = MODULE_NAME,
	544	.ctrls = sd_ctrls,
	545	.nctrls = ARRAY_SIZE(sd_ctrls),
	546	.config = sd_config,
	547	.init = sd_init,
	548	.start = sd_start,
	549	.stopN = sd_stopN,
	550	.pkt_scan = sd_pkt_scan,
11d9f25d JP	551	.get_streamparm = sd_get_streamparm,
11d9f25d JP	552	.set_streamparm = sd_set_streamparm,
fbb4c6d2 AO	553	};
	554
	555	/* -- module initialisation -- */
	556	static const __devinitdata struct usb_device_id device_table[] = {
	557	{USB_DEVICE(0x06f8, 0x3002)}, /* Hercules Blog Webcam */
	558	{USB_DEVICE(0x06f8, 0x3003)}, /* Hercules Dualpix HD Weblog */
	559	{USB_DEVICE(0x1415, 0x2000)}, /* Sony HD Eye for PS3 (SLEH 00201) */
	560	{}
	561	};
	562
	563	MODULE_DEVICE_TABLE(usb, device_table);
	564
	565	/* -- device connect -- */
	566	static int sd_probe(struct usb_interface intf, const struct usb_device_id id)
	567	{
	568	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	569	THIS_MODULE);
	570	}
	571
	572	static struct usb_driver sd_driver = {
	573	.name = MODULE_NAME,
	574	.id_table = device_table,
	575	.probe = sd_probe,
	576	.disconnect = gspca_disconnect,
	577	#ifdef CONFIG_PM
	578	.suspend = gspca_suspend,
	579	.resume = gspca_resume,
	580	#endif
	581	};
	582
	583	/* -- module insert / remove -- */
	584	static int __init sd_mod_init(void)
	585	{
	586	if (usb_register(&sd_driver) < 0)
	587	return -1;
	588	PDEBUG(D_PROBE, "registered");
	589	return 0;
	590	}
	591
	592	static void __exit sd_mod_exit(void)
	593	{
	594	usb_deregister(&sd_driver);
	595	PDEBUG(D_PROBE, "deregistered");
	596	}
	597
	598	module_init(sd_mod_init);
	599	module_exit(sd_mod_exit);