drivers/media/video/gspca/mr97310a.c - kernel/windcharger - Git at Google

 /*
  * Mars MR97310A library
  *
  * Copyright (C) 2009 Kyle Guinn <elyk03@gmail.com>
  *
  * 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 "mr97310a"

 #include "gspca.h"

 MODULE_AUTHOR("Kyle Guinn <elyk03@gmail.com>");
 MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver");
 MODULE_LICENSE("GPL");

 /* specific webcam descriptor */
 struct sd {
 	struct gspca_dev gspca_dev;  /* !! must be the first item */
 	u8 sof_read;
 };

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

 static const struct v4l2_pix_format vga_mode[] = {
 	{160, 120, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
 		.bytesperline = 160,
 		.sizeimage = 160 * 120,
 		.colorspace = V4L2_COLORSPACE_SRGB,
 		.priv = 4},
 	{176, 144, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
 		.bytesperline = 176,
 		.sizeimage = 176 * 144,
 		.colorspace = V4L2_COLORSPACE_SRGB,
 		.priv = 3},
 	{320, 240, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
 		.bytesperline = 320,
 		.sizeimage = 320 * 240,
 		.colorspace = V4L2_COLORSPACE_SRGB,
 		.priv = 2},
 	{352, 288, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
 		.bytesperline = 352,
 		.sizeimage = 352 * 288,
 		.colorspace = V4L2_COLORSPACE_SRGB,
 		.priv = 1},
 	{640, 480, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
 		.bytesperline = 640,
 		.sizeimage = 640 * 480,
 		.colorspace = V4L2_COLORSPACE_SRGB,
 		.priv = 0},
 };

 /* the bytes to write are in gspca_dev->usb_buf */
 static int reg_w(struct gspca_dev *gspca_dev, int len)
 {
 	int rc;

 	rc = usb_bulk_msg(gspca_dev->dev,
 			  usb_sndbulkpipe(gspca_dev->dev, 4),
 			  gspca_dev->usb_buf, len, NULL, 500);
 	if (rc < 0)
 		PDEBUG(D_ERR, "reg write [%02x] error %d",
 		       gspca_dev->usb_buf[0], rc);
 	return rc;
 }

 /* 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);
 	return 0;
 }

 /* this function is called at probe and resume time */
 static int sd_init(struct gspca_dev *gspca_dev)
 {
 	return 0;
 }

 static int sd_start(struct gspca_dev *gspca_dev)
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 	__u8 *data = gspca_dev->usb_buf;
 	int err_code;

 	sd->sof_read = 0;

 	/* Note:  register descriptions guessed from MR97113A driver */

 	data[0] = 0x01;
 	data[1] = 0x01;
 	err_code = reg_w(gspca_dev, 2);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x00;
 	data[1] = 0x0d;
 	data[2] = 0x01;
 	data[5] = 0x2b;
 	data[7] = 0x00;
 	data[9] = 0x50;  /* reg 8, no scale down */
 	data[10] = 0xc0;

 	switch (gspca_dev->width) {
 	case 160:
 		data[9] |= 0x0c;  /* reg 8, 4:1 scale down */
 		/* fall thru */
 	case 320:
 		data[9] |= 0x04;  /* reg 8, 2:1 scale down */
 		/* fall thru */
 	case 640:
 	default:
 		data[3] = 0x50;  /* reg 2, H size */
 		data[4] = 0x78;  /* reg 3, V size */
 		data[6] = 0x04;  /* reg 5, H start */
 		data[8] = 0x03;  /* reg 7, V start */
 		break;

 	case 176:
 		data[9] |= 0x04;  /* reg 8, 2:1 scale down */
 		/* fall thru */
 	case 352:
 		data[3] = 0x2c;  /* reg 2, H size */
 		data[4] = 0x48;  /* reg 3, V size */
 		data[6] = 0x94;  /* reg 5, H start */
 		data[8] = 0x63;  /* reg 7, V start */
 		break;
 	}

 	err_code = reg_w(gspca_dev, 11);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x0a;
 	data[1] = 0x80;
 	err_code = reg_w(gspca_dev, 2);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x14;
 	data[1] = 0x0a;
 	err_code = reg_w(gspca_dev, 2);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x1b;
 	data[1] = 0x00;
 	err_code = reg_w(gspca_dev, 2);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x15;
 	data[1] = 0x16;
 	err_code = reg_w(gspca_dev, 2);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x16;
 	data[1] = 0x10;
 	err_code = reg_w(gspca_dev, 2);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x17;
 	data[1] = 0x3a;
 	err_code = reg_w(gspca_dev, 2);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x18;
 	data[1] = 0x68;
 	err_code = reg_w(gspca_dev, 2);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x1f;
 	data[1] = 0x00;
 	data[2] = 0x02;
 	data[3] = 0x06;
 	data[4] = 0x59;
 	data[5] = 0x0c;
 	data[6] = 0x16;
 	data[7] = 0x00;
 	data[8] = 0x07;
 	data[9] = 0x00;
 	data[10] = 0x01;
 	err_code = reg_w(gspca_dev, 11);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x1f;
 	data[1] = 0x04;
 	data[2] = 0x11;
 	data[3] = 0x01;
 	err_code = reg_w(gspca_dev, 4);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x1f;
 	data[1] = 0x00;
 	data[2] = 0x0a;
 	data[3] = 0x00;
 	data[4] = 0x01;
 	data[5] = 0x00;
 	data[6] = 0x00;
 	data[7] = 0x01;
 	data[8] = 0x00;
 	data[9] = 0x0a;
 	err_code = reg_w(gspca_dev, 10);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x1f;
 	data[1] = 0x04;
 	data[2] = 0x11;
 	data[3] = 0x01;
 	err_code = reg_w(gspca_dev, 4);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x1f;
 	data[1] = 0x00;
 	data[2] = 0x12;
 	data[3] = 0x00;
 	data[4] = 0x63;
 	data[5] = 0x00;
 	data[6] = 0x70;
 	data[7] = 0x00;
 	data[8] = 0x00;
 	err_code = reg_w(gspca_dev, 9);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x1f;
 	data[1] = 0x04;
 	data[2] = 0x11;
 	data[3] = 0x01;
 	err_code = reg_w(gspca_dev, 4);
 	if (err_code < 0)
 		return err_code;

 	data[0] = 0x00;
 	data[1] = 0x4d;  /* ISOC transfering enable... */
 	err_code = reg_w(gspca_dev, 2);
 	return err_code;
 }

 static void sd_stopN(struct gspca_dev *gspca_dev)
 {
 	int result;

 	gspca_dev->usb_buf[0] = 1;
 	gspca_dev->usb_buf[1] = 0;
 	result = reg_w(gspca_dev, 2);
 	if (result < 0)
 		PDEBUG(D_ERR, "Camera Stop failed");
 }

 /* Include pac common sof detection functions */
 #include "pac_common.h"

 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 			struct gspca_frame *frame,    /* target */
 			__u8 *data,                   /* isoc packet */
 			int len)                      /* iso packet length */
 {
 	unsigned char *sof;

 	sof = pac_find_sof(gspca_dev, data, len);
 	if (sof) {
 		int n;

 		/* finish decoding current frame */
 		n = sof - data;
 		if (n > sizeof pac_sof_marker)
 			n -= sizeof pac_sof_marker;
 		else
 			n = 0;
 		frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
 					data, n);
 		/* Start next frame. */
 		gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
 			pac_sof_marker, sizeof pac_sof_marker);
 		len -= sof - data;
 		data = sof;
 	}
 	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
 }

 /* 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,
 };

 /* -- module initialisation -- */
 static const __devinitdata struct usb_device_id device_table[] = {
 	{USB_DEVICE(0x08ca, 0x0111)},
 	{USB_DEVICE(0x093a, 0x010f)},
 	{}
 };
 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);
	/*
	* Mars MR97310A library
	*
	* Copyright (C) 2009 Kyle Guinn <elyk03@gmail.com>
	*
	* 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 "mr97310a"

	#include "gspca.h"

	MODULE_AUTHOR("Kyle Guinn <elyk03@gmail.com>");
	MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver");
	MODULE_LICENSE("GPL");

	/* specific webcam descriptor */
	struct sd {
	struct gspca_dev gspca_dev; /* !! must be the first item */
	u8 sof_read;
	};

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

	static const struct v4l2_pix_format vga_mode[] = {
	{160, 120, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
	.bytesperline = 160,
	.sizeimage = 160 * 120,
	.colorspace = V4L2_COLORSPACE_SRGB,
	.priv = 4},
	{176, 144, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
	.bytesperline = 176,
	.sizeimage = 176 * 144,
	.colorspace = V4L2_COLORSPACE_SRGB,
	.priv = 3},
	{320, 240, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
	.bytesperline = 320,
	.sizeimage = 320 * 240,
	.colorspace = V4L2_COLORSPACE_SRGB,
	.priv = 2},
	{352, 288, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
	.bytesperline = 352,
	.sizeimage = 352 * 288,
	.colorspace = V4L2_COLORSPACE_SRGB,
	.priv = 1},
	{640, 480, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
	.bytesperline = 640,
	.sizeimage = 640 * 480,
	.colorspace = V4L2_COLORSPACE_SRGB,
	.priv = 0},
	};

	/* the bytes to write are in gspca_dev->usb_buf */
	static int reg_w(struct gspca_dev *gspca_dev, int len)
	{
	int rc;

	rc = usb_bulk_msg(gspca_dev->dev,
	usb_sndbulkpipe(gspca_dev->dev, 4),
	gspca_dev->usb_buf, len, NULL, 500);
	if (rc < 0)
	PDEBUG(D_ERR, "reg write [%02x] error %d",
	gspca_dev->usb_buf[0], rc);
	return rc;
	}

	/* 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);
	return 0;
	}

	/* this function is called at probe and resume time */
	static int sd_init(struct gspca_dev *gspca_dev)
	{
	return 0;
	}

	static int sd_start(struct gspca_dev *gspca_dev)
	{
	struct sd sd = (struct sd ) gspca_dev;
	__u8 *data = gspca_dev->usb_buf;
	int err_code;

	sd->sof_read = 0;

	/* Note: register descriptions guessed from MR97113A driver */

	data[0] = 0x01;
	data[1] = 0x01;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
	return err_code;

	data[0] = 0x00;
	data[1] = 0x0d;
	data[2] = 0x01;
	data[5] = 0x2b;
	data[7] = 0x00;
	data[9] = 0x50; /* reg 8, no scale down */
	data[10] = 0xc0;

	switch (gspca_dev->width) {
	case 160:
	data[9] \|= 0x0c; /* reg 8, 4:1 scale down */
	/* fall thru */
	case 320:
	data[9] \|= 0x04; /* reg 8, 2:1 scale down */
	/* fall thru */
	case 640:
	default:
	data[3] = 0x50; /* reg 2, H size */
	data[4] = 0x78; /* reg 3, V size */
	data[6] = 0x04; /* reg 5, H start */
	data[8] = 0x03; /* reg 7, V start */
	break;

	case 176:
	data[9] \|= 0x04; /* reg 8, 2:1 scale down */
	/* fall thru */
	case 352:
	data[3] = 0x2c; /* reg 2, H size */
	data[4] = 0x48; /* reg 3, V size */
	data[6] = 0x94; /* reg 5, H start */
	data[8] = 0x63; /* reg 7, V start */
	break;
	}

	err_code = reg_w(gspca_dev, 11);
	if (err_code < 0)
	return err_code;

	data[0] = 0x0a;
	data[1] = 0x80;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
	return err_code;

	data[0] = 0x14;
	data[1] = 0x0a;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
	return err_code;

	data[0] = 0x1b;
	data[1] = 0x00;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
	return err_code;

	data[0] = 0x15;
	data[1] = 0x16;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
	return err_code;

	data[0] = 0x16;
	data[1] = 0x10;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
	return err_code;

	data[0] = 0x17;
	data[1] = 0x3a;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
	return err_code;

	data[0] = 0x18;
	data[1] = 0x68;
	err_code = reg_w(gspca_dev, 2);
	if (err_code < 0)
	return err_code;

	data[0] = 0x1f;
	data[1] = 0x00;
	data[2] = 0x02;
	data[3] = 0x06;
	data[4] = 0x59;
	data[5] = 0x0c;
	data[6] = 0x16;
	data[7] = 0x00;
	data[8] = 0x07;
	data[9] = 0x00;
	data[10] = 0x01;
	err_code = reg_w(gspca_dev, 11);
	if (err_code < 0)
	return err_code;

	data[0] = 0x1f;
	data[1] = 0x04;
	data[2] = 0x11;
	data[3] = 0x01;
	err_code = reg_w(gspca_dev, 4);
	if (err_code < 0)
	return err_code;

	data[0] = 0x1f;
	data[1] = 0x00;
	data[2] = 0x0a;
	data[3] = 0x00;
	data[4] = 0x01;
	data[5] = 0x00;
	data[6] = 0x00;
	data[7] = 0x01;
	data[8] = 0x00;
	data[9] = 0x0a;
	err_code = reg_w(gspca_dev, 10);
	if (err_code < 0)
	return err_code;

	data[0] = 0x1f;
	data[1] = 0x04;
	data[2] = 0x11;
	data[3] = 0x01;
	err_code = reg_w(gspca_dev, 4);
	if (err_code < 0)
	return err_code;

	data[0] = 0x1f;
	data[1] = 0x00;
	data[2] = 0x12;
	data[3] = 0x00;
	data[4] = 0x63;
	data[5] = 0x00;
	data[6] = 0x70;
	data[7] = 0x00;
	data[8] = 0x00;
	err_code = reg_w(gspca_dev, 9);
	if (err_code < 0)
	return err_code;

	data[0] = 0x1f;
	data[1] = 0x04;
	data[2] = 0x11;
	data[3] = 0x01;
	err_code = reg_w(gspca_dev, 4);
	if (err_code < 0)
	return err_code;

	data[0] = 0x00;
	data[1] = 0x4d; /* ISOC transfering enable... */
	err_code = reg_w(gspca_dev, 2);
	return err_code;
	}

	static void sd_stopN(struct gspca_dev *gspca_dev)
	{
	int result;

	gspca_dev->usb_buf[0] = 1;
	gspca_dev->usb_buf[1] = 0;
	result = reg_w(gspca_dev, 2);
	if (result < 0)
	PDEBUG(D_ERR, "Camera Stop failed");
	}

	/* Include pac common sof detection functions */
	#include "pac_common.h"

	static void sd_pkt_scan(struct gspca_dev *gspca_dev,
	struct gspca_frame frame, / target */
	__u8 data, / isoc packet */
	int len) /* iso packet length */
	{
	unsigned char *sof;

	sof = pac_find_sof(gspca_dev, data, len);
	if (sof) {
	int n;

	/* finish decoding current frame */
	n = sof - data;
	if (n > sizeof pac_sof_marker)
	n -= sizeof pac_sof_marker;
	else
	n = 0;
	frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
	data, n);
	/* Start next frame. */
	gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
	pac_sof_marker, sizeof pac_sof_marker);
	len -= sof - data;
	data = sof;
	}
	gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
	}

	/* 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,
	};

	/* -- module initialisation -- */
	static const __devinitdata struct usb_device_id device_table[] = {
	{USB_DEVICE(0x08ca, 0x0111)},
	{USB_DEVICE(0x093a, 0x010f)},
	{}
	};
	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);