[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 const 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 gspca_dev *gspca_dev, u16 reg, u8 val)
{
	struct usb_device *udev = gspca_dev->dev;
	int ret;

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

static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
{
	struct usb_device *udev = gspca_dev->dev;
	int ret;

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

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

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

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

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

	ov534_reg_write(gspca_dev, 0x23, data);
}

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

	for (i = 0; i < 5; i++) {
		data = ov534_reg_read(gspca_dev, 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",
			       data, i + 1);
		}
	}
	return 0;
}

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

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

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

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

	return ov534_reg_read(gspca_dev, 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, 0x11, 0x01);
		sccb_reg_write(gspca_dev, 0x0d, 0x41);
		ov534_reg_write(gspca_dev, 0xe5, 0x02);
		break;
	case 40:
		sccb_reg_write(gspca_dev, 0x11, 0x02);
		sccb_reg_write(gspca_dev, 0x0d, 0xc1);
		ov534_reg_write(gspca_dev, 0xe5, 0x04);
		break;
/*	case 30: */
	default:
		fr = 30;
		sccb_reg_write(gspca_dev, 0x11, 0x04);
		sccb_reg_write(gspca_dev, 0x0d, 0x81);
		ov534_reg_write(gspca_dev, 0xe5, 0x02);
		break;
	case 15:
		sccb_reg_write(gspca_dev, 0x11, 0x03);
		sccb_reg_write(gspca_dev, 0x0d, 0x41);
		ov534_reg_write(gspca_dev, 0xe5, 0x04);
		break;
	}

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

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

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

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

	ov534_set_led(gspca_dev, 1);

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

	ov534_reg_write(gspca_dev, 0xe0, 0x09);
	ov534_set_led(gspca_dev, 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->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);
	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, 1);
	ov534_reg_write(gspca_dev, 0xe0, 0x00);

	return 0;
}

static void sd_stopN(struct gspca_dev *gspca_dev)
{
	/* stop streaming data */
	ov534_reg_write(gspca_dev, 0xe0, 0x09);
	ov534_set_led(gspca_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) */
static 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) */
static 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(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)
{
	int ret;
	ret = usb_register(&sd_driver);
	if (ret < 0)
		return ret;
	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
cc611b8a	58	static const struct v4l2_pix_format vga_mode[] = {
fbb4c6d2 AO	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
15f64864	66	static void ov534_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
fbb4c6d2	67	{
15f64864	68	struct usb_device *udev = gspca_dev->dev;
fbb4c6d2 AO	69	int ret;
fbb4c6d2 AO	70
9e1e7b06	71	PDEBUG(D_USBO, "reg=0x%04x, val=0%02x", reg, val);
15f64864	72	gspca_dev->usb_buf[0] = val;
fbb4c6d2 AO	73	ret = usb_control_msg(udev,
	74	usb_sndctrlpipe(udev, 0),
	75	0x1,
	76	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
15f64864	77	0x0, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
fbb4c6d2 AO	78	if (ret < 0)
	79	PDEBUG(D_ERR, "write failed");
	80	}
	81
15f64864	82	static u8 ov534_reg_read(struct gspca_dev *gspca_dev, u16 reg)
fbb4c6d2	83	{
15f64864	84	struct usb_device *udev = gspca_dev->dev;
fbb4c6d2 AO	85	int ret;
	86
	87	ret = usb_control_msg(udev,
	88	usb_rcvctrlpipe(udev, 0),
	89	0x1,
	90	USB_DIR_IN \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
15f64864 JFM	91	0x0, reg, gspca_dev->usb_buf, 1, CTRL_TIMEOUT);
15f64864 JFM	92	PDEBUG(D_USBI, "reg=0x%04x, data=0x%02x", reg, gspca_dev->usb_buf[0]);
fbb4c6d2 AO	93	if (ret < 0)
fbb4c6d2 AO	94	PDEBUG(D_ERR, "read failed");
15f64864	95	return gspca_dev->usb_buf[0];
fbb4c6d2 AO	96	}
fbb4c6d2 AO	97
fbb4c6d2 AO	98	/* Two bits control LED: 0x21 bit 7 and 0x23 bit 7.
fbb4c6d2 AO	99	* (direction and output)? */
15f64864	100	static void ov534_set_led(struct gspca_dev *gspca_dev, int status)
fbb4c6d2	101	{
9e1e7b06	102	u8 data;
fbb4c6d2 AO	103
	104	PDEBUG(D_CONF, "led status: %d", status);
	105
15f64864	106	data = ov534_reg_read(gspca_dev, 0x21);
fbb4c6d2	107	data \|= 0x80;
15f64864	108	ov534_reg_write(gspca_dev, 0x21, data);
fbb4c6d2	109
15f64864	110	data = ov534_reg_read(gspca_dev, 0x23);
fbb4c6d2 AO	111	if (status)
	112	data \|= 0x80;
	113	else
	114	data &= ~(0x80);
	115
15f64864	116	ov534_reg_write(gspca_dev, 0x23, data);
fbb4c6d2 AO	117	}
fbb4c6d2 AO	118
15f64864	119	static int sccb_check_status(struct gspca_dev *gspca_dev)
fbb4c6d2	120	{
9e1e7b06	121	u8 data;
fbb4c6d2 AO	122	int i;
	123
	124	for (i = 0; i < 5; i++) {
15f64864	125	data = ov534_reg_read(gspca_dev, OV534_REG_STATUS);
fbb4c6d2	126
9e1e7b06	127	switch (data) {
fbb4c6d2 AO	128	case 0x00:
	129	return 1;
	130	case 0x04:
	131	return 0;
	132	case 0x03:
	133	break;
	134	default:
f367b85d	135	PDEBUG(D_ERR, "sccb status 0x%02x, attempt %d/5",
fbb4c6d2 AO	136	data, i + 1);
	137	}
	138	}
	139	return 0;
	140	}
	141
15f64864	142	static void sccb_reg_write(struct gspca_dev *gspca_dev, u16 reg, u8 val)
fbb4c6d2	143	{
9e1e7b06	144	PDEBUG(D_USBO, "reg: 0x%04x, val: 0x%02x", reg, val);
15f64864 JFM	145	ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
	146	ov534_reg_write(gspca_dev, OV534_REG_WRITE, val);
	147	ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_3);
fbb4c6d2	148
15f64864	149	if (!sccb_check_status(gspca_dev))
fbb4c6d2 AO	150	PDEBUG(D_ERR, "sccb_reg_write failed");
	151	}
	152
1dc87b6e	153	#ifdef GSPCA_DEBUG
15f64864	154	static u8 sccb_reg_read(struct gspca_dev *gspca_dev, u16 reg)
e6e48378	155	{
15f64864 JFM	156	ov534_reg_write(gspca_dev, OV534_REG_SUBADDR, reg);
	157	ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_WRITE_2);
	158	if (!sccb_check_status(gspca_dev))
e6e48378 AO	159	PDEBUG(D_ERR, "sccb_reg_read failed 1");
e6e48378 AO	160
15f64864 JFM	161	ov534_reg_write(gspca_dev, OV534_REG_OPERATION, OV534_OP_READ_2);
15f64864 JFM	162	if (!sccb_check_status(gspca_dev))
e6e48378 AO	163	PDEBUG(D_ERR, "sccb_reg_read failed 2");
e6e48378 AO	164
15f64864	165	return ov534_reg_read(gspca_dev, OV534_REG_READ);
e6e48378	166	}
1dc87b6e	167	#endif
e6e48378	168
47dfd21f JP	169	static const __u8 ov534_reg_initdata[][2] = {
	170	{ 0xe7, 0x3a },
	171
	172	{ OV534_REG_ADDRESS, 0x42 }, /* select OV772x sensor */
	173
	174	{ 0xc2, 0x0c },
	175	{ 0x88, 0xf8 },
	176	{ 0xc3, 0x69 },
	177	{ 0x89, 0xff },
	178	{ 0x76, 0x03 },
	179	{ 0x92, 0x01 },
	180	{ 0x93, 0x18 },
	181	{ 0x94, 0x10 },
	182	{ 0x95, 0x10 },
	183	{ 0xe2, 0x00 },
	184	{ 0xe7, 0x3e },
	185
47dfd21f JP	186	{ 0x96, 0x00 },
	187
	188	{ 0x97, 0x20 },
	189	{ 0x97, 0x20 },
	190	{ 0x97, 0x20 },
	191	{ 0x97, 0x0a },
	192	{ 0x97, 0x3f },
	193	{ 0x97, 0x4a },
	194	{ 0x97, 0x20 },
	195	{ 0x97, 0x15 },
	196	{ 0x97, 0x0b },
	197
	198	{ 0x8e, 0x40 },
	199	{ 0x1f, 0x81 },
	200	{ 0x34, 0x05 },
	201	{ 0xe3, 0x04 },
	202	{ 0x88, 0x00 },
	203	{ 0x89, 0x00 },
	204	{ 0x76, 0x00 },
	205	{ 0xe7, 0x2e },
	206	{ 0x31, 0xf9 },
	207	{ 0x25, 0x42 },
	208	{ 0x21, 0xf0 },
	209
	210	{ 0x1c, 0x00 },
	211	{ 0x1d, 0x40 },
0f7a50b2 JP	212	{ 0x1d, 0x02 }, /* payload size 0x0200 * 4 = 2048 bytes */
0f7a50b2 JP	213	{ 0x1d, 0x00 }, /* payload size */
5ea9c4de JP	214	{ 0x1d, 0x02 }, /* frame size 0x025800 * 4 = 614400 */
	215	{ 0x1d, 0x58 }, /* frame size */
	216	{ 0x1d, 0x00 }, /* frame size */
47dfd21f	217
c06eb619 JP	218	{ 0x1c, 0x0a },
	219	{ 0x1d, 0x08 }, /* turn on UVC header */
	220	{ 0x1d, 0x0e }, /* .. */
	221
47dfd21f JP	222	{ 0x8d, 0x1c },
	223	{ 0x8e, 0x80 },
	224	{ 0xe5, 0x04 },
	225
	226	{ 0xc0, 0x50 },
	227	{ 0xc1, 0x3c },
	228	{ 0xc2, 0x0c },
	229	};
fbb4c6d2	230
47dfd21f JP	231	static const __u8 ov772x_reg_initdata[][2] = {
	232	{ 0x12, 0x80 },
	233	{ 0x11, 0x01 },
	234
	235	{ 0x3d, 0x03 },
	236	{ 0x17, 0x26 },
	237	{ 0x18, 0xa0 },
	238	{ 0x19, 0x07 },
	239	{ 0x1a, 0xf0 },
	240	{ 0x32, 0x00 },
	241	{ 0x29, 0xa0 },
	242	{ 0x2c, 0xf0 },
	243	{ 0x65, 0x20 },
	244	{ 0x11, 0x01 },
	245	{ 0x42, 0x7f },
	246	{ 0x63, 0xe0 },
	247	{ 0x64, 0xff },
	248	{ 0x66, 0x00 },
	249	{ 0x13, 0xf0 },
	250	{ 0x0d, 0x41 },
	251	{ 0x0f, 0xc5 },
	252	{ 0x14, 0x11 },
	253
	254	{ 0x22, 0x7f },
	255	{ 0x23, 0x03 },
	256	{ 0x24, 0x40 },
	257	{ 0x25, 0x30 },
	258	{ 0x26, 0xa1 },
	259	{ 0x2a, 0x00 },
	260	{ 0x2b, 0x00 },
	261	{ 0x6b, 0xaa },
	262	{ 0x13, 0xff },
	263
	264	{ 0x90, 0x05 },
	265	{ 0x91, 0x01 },
	266	{ 0x92, 0x03 },
	267	{ 0x93, 0x00 },
	268	{ 0x94, 0x60 },
	269	{ 0x95, 0x3c },
	270	{ 0x96, 0x24 },
	271	{ 0x97, 0x1e },
	272	{ 0x98, 0x62 },
	273	{ 0x99, 0x80 },
	274	{ 0x9a, 0x1e },
	275	{ 0x9b, 0x08 },
	276	{ 0x9c, 0x20 },
	277	{ 0x9e, 0x81 },
	278
	279	{ 0xa6, 0x04 },
	280	{ 0x7e, 0x0c },
	281	{ 0x7f, 0x16 },
	282	{ 0x80, 0x2a },
	283	{ 0x81, 0x4e },
	284	{ 0x82, 0x61 },
	285	{ 0x83, 0x6f },
	286	{ 0x84, 0x7b },
	287	{ 0x85, 0x86 },
	288	{ 0x86, 0x8e },
	289	{ 0x87, 0x97 },
	290	{ 0x88, 0xa4 },
	291	{ 0x89, 0xaf },
	292	{ 0x8a, 0xc5 },
	293	{ 0x8b, 0xd7 },
	294	{ 0x8c, 0xe8 },
295	{ 0x8d, 0x20 },
296
297	{ 0x0c, 0x90 },
298
299	{ 0x2b, 0x00 },
300	{ 0x22, 0x7f },
301	{ 0x23, 0x03 },
302	{ 0x11, 0x01 },
303	{ 0x0c, 0xd0 },
304	{ 0x64, 0xff },
305	{ 0x0d, 0x41 },
306
307	{ 0x14, 0x41 },
308	{ 0x0e, 0xcd },
309	{ 0xac, 0xbf },
310	{ 0x8e, 0x00 },
311	{ 0x0c, 0xd0 }
312	};
fbb4c6d2	313
11d9f25d JP	314	/* set framerate */
	315	static void ov534_set_frame_rate(struct gspca_dev *gspca_dev)
	316	{
	317	struct sd sd = (struct sd ) gspca_dev;
	318	int fr = sd->frame_rate;
	319
	320	switch (fr) {
	321	case 50:
15f64864 JFM	322	sccb_reg_write(gspca_dev, 0x11, 0x01);
	323	sccb_reg_write(gspca_dev, 0x0d, 0x41);
	324	ov534_reg_write(gspca_dev, 0xe5, 0x02);
11d9f25d JP	325	break;
11d9f25d JP	326	case 40:
15f64864 JFM	327	sccb_reg_write(gspca_dev, 0x11, 0x02);
	328	sccb_reg_write(gspca_dev, 0x0d, 0xc1);
	329	ov534_reg_write(gspca_dev, 0xe5, 0x04);
11d9f25d JP	330	break;
	331	/* case 30: */
	332	default:
	333	fr = 30;
15f64864 JFM	334	sccb_reg_write(gspca_dev, 0x11, 0x04);
	335	sccb_reg_write(gspca_dev, 0x0d, 0x81);
	336	ov534_reg_write(gspca_dev, 0xe5, 0x02);
11d9f25d JP	337	break;
11d9f25d JP	338	case 15:
15f64864 JFM	339	sccb_reg_write(gspca_dev, 0x11, 0x03);
	340	sccb_reg_write(gspca_dev, 0x0d, 0x41);
	341	ov534_reg_write(gspca_dev, 0xe5, 0x04);
11d9f25d JP	342	break;
	343	}
	344
	345	sd->frame_rate = fr;
	346	PDEBUG(D_PROBE, "frame_rate: %d", fr);
	347	}
fbb4c6d2	348
47dfd21f	349	/* setup method */
15f64864	350	static void ov534_setup(struct gspca_dev *gspca_dev)
47dfd21f JP	351	{
47dfd21f JP	352	int i;
fbb4c6d2	353
47dfd21f JP	354	/* Initialize bridge chip */
47dfd21f JP	355	for (i = 0; i < ARRAY_SIZE(ov534_reg_initdata); i++)
15f64864	356	ov534_reg_write(gspca_dev, ov534_reg_initdata[i][0],
47dfd21f	357	ov534_reg_initdata[i][1]);
fbb4c6d2	358
e6e48378	359	PDEBUG(D_PROBE, "sensor is ov%02x%02x",
15f64864 JFM	360	sccb_reg_read(gspca_dev, 0x0a),
15f64864 JFM	361	sccb_reg_read(gspca_dev, 0x0b));
e6e48378	362
15f64864	363	ov534_set_led(gspca_dev, 1);
fbb4c6d2	364
47dfd21f JP	365	/* Initialize sensor */
47dfd21f JP	366	for (i = 0; i < ARRAY_SIZE(ov772x_reg_initdata); i++)
15f64864	367	sccb_reg_write(gspca_dev, ov772x_reg_initdata[i][0],
47dfd21f	368	ov772x_reg_initdata[i][1]);
fbb4c6d2	369
15f64864 JFM	370	ov534_reg_write(gspca_dev, 0xe0, 0x09);
15f64864 JFM	371	ov534_set_led(gspca_dev, 0);
fbb4c6d2 AO	372	}
	373
	374	/* this function is called at probe time */
	375	static int sd_config(struct gspca_dev *gspca_dev,
	376	const struct usb_device_id *id)
	377	{
	378	struct cam *cam;
	379
	380	cam = &gspca_dev->cam;
	381
fbb4c6d2 AO	382	cam->cam_mode = vga_mode;
	383	cam->nmodes = ARRAY_SIZE(vga_mode);
	384
0f7a50b2	385	cam->bulk_size = 16384;
fbb4c6d2 AO	386	cam->bulk_nurbs = 2;
fbb4c6d2 AO	387
fbb4c6d2 AO	388	return 0;
	389	}
	390
	391	/* this function is called at probe and resume time */
	392	static int sd_init(struct gspca_dev *gspca_dev)
	393	{
15f64864	394	ov534_setup(gspca_dev);
11d9f25d	395	ov534_set_frame_rate(gspca_dev);
fbb4c6d2 AO	396
	397	return 0;
	398	}
	399
	400	static int sd_start(struct gspca_dev *gspca_dev)
	401	{
fbb4c6d2	402	/* start streaming data */
15f64864 JFM	403	ov534_set_led(gspca_dev, 1);
15f64864 JFM	404	ov534_reg_write(gspca_dev, 0xe0, 0x00);
fbb4c6d2 AO	405
	406	return 0;
	407	}
	408
	409	static void sd_stopN(struct gspca_dev *gspca_dev)
	410	{
	411	/* stop streaming data */
15f64864 JFM	412	ov534_reg_write(gspca_dev, 0xe0, 0x09);
15f64864 JFM	413	ov534_set_led(gspca_dev, 0);
fbb4c6d2 AO	414	}
fbb4c6d2 AO	415
fb139224 JP	416	/* Values for bmHeaderInfo (Video and Still Image Payload Headers, 2.4.3.3) */
	417	#define UVC_STREAM_EOH (1 << 7)
	418	#define UVC_STREAM_ERR (1 << 6)
	419	#define UVC_STREAM_STI (1 << 5)
	420	#define UVC_STREAM_RES (1 << 4)
	421	#define UVC_STREAM_SCR (1 << 3)
	422	#define UVC_STREAM_PTS (1 << 2)
	423	#define UVC_STREAM_EOF (1 << 1)
	424	#define UVC_STREAM_FID (1 << 0)
	425
fbb4c6d2 AO	426	static void sd_pkt_scan(struct gspca_dev gspca_dev, struct gspca_frame frame,
	427	__u8 *data, int len)
	428	{
8c252050	429	struct sd sd = (struct sd ) gspca_dev;
fb139224	430	__u32 this_pts;
fb139224	431	int this_fid;
0f7a50b2 JP	432	int remaining_len = len;
	433	__u8 *next_data = data;
	434
	435	scan_next:
	436	if (remaining_len <= 0)
	437	return;
	438
	439	data = next_data;
	440	len = min(remaining_len, 2048);
	441	remaining_len -= len;
	442	next_data += len;
fb139224	443
15e3209a	444	/* Payloads are prefixed with a UVC-style header. We
fb139224 JP	445	consider a frame to start when the FID toggles, or the PTS
	446	changes. A frame ends when EOF is set, and we've received
	447	the correct number of bytes. */
	448
	449	/* Verify UVC header. Header length is always 12 */
	450	if (data[0] != 12 \|\| len < 12) {
	451	PDEBUG(D_PACK, "bad header");
	452	goto discard;
	453	}
	454
	455	/* Check errors */
	456	if (data[1] & UVC_STREAM_ERR) {
	457	PDEBUG(D_PACK, "payload error");
	458	goto discard;
	459	}
	460
	461	/* Extract PTS and FID */
	462	if (!(data[1] & UVC_STREAM_PTS)) {
	463	PDEBUG(D_PACK, "PTS not present");
	464	goto discard;
	465	}
	466	this_pts = (data[5] << 24) \| (data[4] << 16) \| (data[3] << 8) \| data[2];
	467	this_fid = (data[1] & UVC_STREAM_FID) ? 1 : 0;
	468
	469	/* If PTS or FID has changed, start a new frame. */
8c252050	470	if (this_pts != sd->last_pts \|\| this_fid != sd->last_fid) {
fb139224	471	gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0);
8c252050 JFM	472	sd->last_pts = this_pts;
8c252050 JFM	473	sd->last_fid = this_fid;
fb139224 JP	474	}
	475
	476	/* Add the data from this payload */
	477	gspca_frame_add(gspca_dev, INTER_PACKET, frame,
	478	data + 12, len - 12);
	479
	480	/* If this packet is marked as EOF, end the frame */
	481	if (data[1] & UVC_STREAM_EOF) {
8c252050	482	sd->last_pts = 0;
fb139224 JP	483
	484	if ((frame->data_end - frame->data) !=
	485	(gspca_dev->width * gspca_dev->height * 2)) {
	486	PDEBUG(D_PACK, "short frame");
	487	goto discard;
	488	}
	489
	490	gspca_frame_add(gspca_dev, LAST_PACKET, frame, NULL, 0);
	491	}
	492
0f7a50b2 JP	493	/* Done this payload */
0f7a50b2 JP	494	goto scan_next;
fb139224 JP	495
	496	discard:
	497	/* Discard data until a new frame starts. */
	498	gspca_frame_add(gspca_dev, DISCARD_PACKET, frame, NULL, 0);
0f7a50b2	499	goto scan_next;
fbb4c6d2 AO	500	}
fbb4c6d2 AO	501
11d9f25d	502	/* get stream parameters (framerate) */
5c1a15a1 JFM	503	static int sd_get_streamparm(struct gspca_dev *gspca_dev,
5c1a15a1 JFM	504	struct v4l2_streamparm *parm)
11d9f25d JP	505	{
	506	struct v4l2_captureparm *cp = &parm->parm.capture;
	507	struct v4l2_fract *tpf = &cp->timeperframe;
	508	struct sd sd = (struct sd ) gspca_dev;
	509
	510	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	511	return -EINVAL;
	512
	513	cp->capability \|= V4L2_CAP_TIMEPERFRAME;
	514	tpf->numerator = 1;
	515	tpf->denominator = sd->frame_rate;
	516
	517	return 0;
	518	}
	519
	520	/* set stream parameters (framerate) */
5c1a15a1 JFM	521	static int sd_set_streamparm(struct gspca_dev *gspca_dev,
5c1a15a1 JFM	522	struct v4l2_streamparm *parm)
11d9f25d JP	523	{
	524	struct v4l2_captureparm *cp = &parm->parm.capture;
	525	struct v4l2_fract *tpf = &cp->timeperframe;
	526	struct sd sd = (struct sd ) gspca_dev;
	527
	528	if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
	529	return -EINVAL;
	530
	531	/* Set requested framerate */
	532	sd->frame_rate = tpf->denominator / tpf->numerator;
	533	ov534_set_frame_rate(gspca_dev);
	534
	535	/* Return the actual framerate */
	536	tpf->numerator = 1;
	537	tpf->denominator = sd->frame_rate;
	538
	539	return 0;
	540	}
	541
fbb4c6d2 AO	542	/* sub-driver description */
	543	static const struct sd_desc sd_desc = {
	544	.name = MODULE_NAME,
	545	.ctrls = sd_ctrls,
	546	.nctrls = ARRAY_SIZE(sd_ctrls),
	547	.config = sd_config,
	548	.init = sd_init,
	549	.start = sd_start,
	550	.stopN = sd_stopN,
	551	.pkt_scan = sd_pkt_scan,
11d9f25d JP	552	.get_streamparm = sd_get_streamparm,
11d9f25d JP	553	.set_streamparm = sd_set_streamparm,
fbb4c6d2 AO	554	};
	555
	556	/* -- module initialisation -- */
	557	static const __devinitdata struct usb_device_id device_table[] = {
fbb4c6d2 AO	558	{USB_DEVICE(0x1415, 0x2000)}, /* Sony HD Eye for PS3 (SLEH 00201) */
	559	{}
	560	};
	561
	562	MODULE_DEVICE_TABLE(usb, device_table);
	563
	564	/* -- device connect -- */
	565	static int sd_probe(struct usb_interface intf, const struct usb_device_id id)
	566	{
	567	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
	568	THIS_MODULE);
	569	}
	570
	571	static struct usb_driver sd_driver = {
	572	.name = MODULE_NAME,
	573	.id_table = device_table,
	574	.probe = sd_probe,
	575	.disconnect = gspca_disconnect,
	576	#ifdef CONFIG_PM
	577	.suspend = gspca_suspend,
	578	.resume = gspca_resume,
	579	#endif
	580	};
	581
	582	/* -- module insert / remove -- */
	583	static int __init sd_mod_init(void)
	584	{
f69e9529 AK	585	int ret;
	586	ret = usb_register(&sd_driver);
	587	if (ret < 0)
e6b14849	588	return ret;
fbb4c6d2 AO	589	PDEBUG(D_PROBE, "registered");
	590	return 0;
	591	}
	592
	593	static void __exit sd_mod_exit(void)
	594	{
	595	usb_deregister(&sd_driver);
	596	PDEBUG(D_PROBE, "deregistered");
	597	}
	598
	599	module_init(sd_mod_init);
	600	module_exit(sd_mod_exit);