[deliverable/linux.git] / drivers / media / usb / gspca / vicam.c

/*
 * gspca ViCam subdriver
 *
 * Copyright (C) 2011 Hans de Goede <hdegoede@redhat.com>
 *
 * Based on the usbvideo vicam driver, which is:
 *
 * Copyright (c) 2002 Joe Burks (jburks@wavicle.org),
 *                    Chris Cheney (chris.cheney@gmail.com),
 *                    Pavel Machek (pavel@ucw.cz),
 *                    John Tyner (jtyner@cs.ucr.edu),
 *                    Monroe Williams (monroe@pobox.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 pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#define MODULE_NAME "vicam"
#define HEADER_SIZE 64

#include <linux/workqueue.h>
#include <linux/slab.h>
#include <linux/firmware.h>
#include <linux/ihex.h>
#include "gspca.h"

#define VICAM_FIRMWARE "vicam/firmware.fw"

MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_DESCRIPTION("GSPCA ViCam USB Camera Driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(VICAM_FIRMWARE);

struct sd {
	struct gspca_dev gspca_dev;	/* !! must be the first item */
	struct work_struct work_struct;
};

/* The vicam sensor has a resolution of 512 x 244, with I believe square
   pixels, but this is forced to a 4:3 ratio by optics. So it has
   non square pixels :( */
static struct v4l2_pix_format vicam_mode[] = {
	{ 256, 122, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
		.bytesperline = 256,
		.sizeimage = 256 * 122,
		.colorspace = V4L2_COLORSPACE_SRGB,},
	/* 2 modes with somewhat more square pixels */
	{ 256, 200, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
		.bytesperline = 256,
		.sizeimage = 256 * 200,
		.colorspace = V4L2_COLORSPACE_SRGB,},
	{ 256, 240, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
		.bytesperline = 256,
		.sizeimage = 256 * 240,
		.colorspace = V4L2_COLORSPACE_SRGB,},
#if 0   /* This mode has extremely non square pixels, testing use only */
	{ 512, 122, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
		.bytesperline = 512,
		.sizeimage = 512 * 122,
		.colorspace = V4L2_COLORSPACE_SRGB,},
#endif
	{ 512, 244, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
		.bytesperline = 512,
		.sizeimage = 512 * 244,
		.colorspace = V4L2_COLORSPACE_SRGB,},
};

static int vicam_control_msg(struct gspca_dev *gspca_dev, u8 request,
	u16 value, u16 index, u8 *data, u16 len)
{
	int ret;

	ret = usb_control_msg(gspca_dev->dev,
			      usb_sndctrlpipe(gspca_dev->dev, 0),
			      request,
			      USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
			      value, index, data, len, 1000);
	if (ret < 0)
		pr_err("control msg req %02X error %d\n", request, ret);

	return ret;
}

static int vicam_set_camera_power(struct gspca_dev *gspca_dev, int state)
{
	int ret;

	ret = vicam_control_msg(gspca_dev, 0x50, state, 0, NULL, 0);
	if (ret < 0)
		return ret;

	if (state)
		ret = vicam_control_msg(gspca_dev, 0x55, 1, 0, NULL, 0);

	return ret;
}

/*
 *  request and read a block of data
 */
static int vicam_read_frame(struct gspca_dev *gspca_dev, u8 *data, int size)
{
	int ret, unscaled_height, act_len = 0;
	u8 *req_data = gspca_dev->usb_buf;
	s32 expo = v4l2_ctrl_g_ctrl(gspca_dev->exposure);
	s32 gain = v4l2_ctrl_g_ctrl(gspca_dev->gain);

	memset(req_data, 0, 16);
	req_data[0] = gain;
	if (gspca_dev->pixfmt.width == 256)
		req_data[1] |= 0x01; /* low nibble x-scale */
	if (gspca_dev->pixfmt.height <= 122) {
		req_data[1] |= 0x10; /* high nibble y-scale */
		unscaled_height = gspca_dev->pixfmt.height * 2;
	} else
		unscaled_height = gspca_dev->pixfmt.height;
	req_data[2] = 0x90; /* unknown, does not seem to do anything */
	if (unscaled_height <= 200)
		req_data[3] = 0x06; /* vend? */
	else if (unscaled_height <= 242) /* Yes 242 not 240 */
		req_data[3] = 0x07; /* vend? */
	else /* Up to 244 lines with req_data[3] == 0x08 */
		req_data[3] = 0x08; /* vend? */

	if (expo < 256) {
		/* Frame rate maxed out, use partial frame expo time */
		req_data[4] = 255 - expo;
		req_data[5] = 0x00;
		req_data[6] = 0x00;
		req_data[7] = 0x01;
	} else {
		/* Modify frame rate */
		req_data[4] = 0x00;
		req_data[5] = 0x00;
		req_data[6] = expo & 0xFF;
		req_data[7] = expo >> 8;
	}
	req_data[8] = ((244 - unscaled_height) / 2) & ~0x01; /* vstart */
	/* bytes 9-15 do not seem to affect exposure or image quality */

	mutex_lock(&gspca_dev->usb_lock);
	ret = vicam_control_msg(gspca_dev, 0x51, 0x80, 0, req_data, 16);
	mutex_unlock(&gspca_dev->usb_lock);
	if (ret < 0)
		return ret;

	ret = usb_bulk_msg(gspca_dev->dev,
			   usb_rcvbulkpipe(gspca_dev->dev, 0x81),
			   data, size, &act_len, 10000);
	/* successful, it returns 0, otherwise  negative */
	if (ret < 0 || act_len != size) {
		pr_err("bulk read fail (%d) len %d/%d\n",
		       ret, act_len, size);
		return -EIO;
	}
	return 0;
}

/*
 * This function is called as a workqueue function and runs whenever the camera
 * is streaming data. Because it is a workqueue function it is allowed to sleep
 * so we can use synchronous USB calls. To avoid possible collisions with other
 * threads attempting to use gspca_dev->usb_buf we take the usb_lock when
 * performing USB operations using it. In practice we don't really need this
 * as the cameras controls are only written from the workqueue.
 */
static void vicam_dostream(struct work_struct *work)
{
	struct sd *sd = container_of(work, struct sd, work_struct);
	struct gspca_dev *gspca_dev = &sd->gspca_dev;
	int ret, frame_sz;
	u8 *buffer;

	frame_sz = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].sizeimage +
		   HEADER_SIZE;
	buffer = kmalloc(frame_sz, GFP_KERNEL | GFP_DMA);
	if (!buffer) {
		pr_err("Couldn't allocate USB buffer\n");
		goto exit;
	}

	while (gspca_dev->present && gspca_dev->streaming) {
#ifdef CONFIG_PM
		if (gspca_dev->frozen)
			break;
#endif
		ret = vicam_read_frame(gspca_dev, buffer, frame_sz);
		if (ret < 0)
			break;

		/* Note the frame header contents seem to be completely
		   constant, they do not change with either image, or
		   settings. So we simply discard it. The frames have
		   a very similar 64 byte footer, which we don't even
		   bother reading from the cam */
		gspca_frame_add(gspca_dev, FIRST_PACKET,
				buffer + HEADER_SIZE,
				frame_sz - HEADER_SIZE);
		gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
	}
exit:
	kfree(buffer);
}

/* This function is called at probe time just before sd_init */
static int sd_config(struct gspca_dev *gspca_dev,
		const struct usb_device_id *id)
{
	struct cam *cam = &gspca_dev->cam;
	struct sd *sd = (struct sd *)gspca_dev;

	/* We don't use the buffer gspca allocates so make it small. */
	cam->bulk = 1;
	cam->bulk_size = 64;
	cam->cam_mode = vicam_mode;
	cam->nmodes = ARRAY_SIZE(vicam_mode);

	INIT_WORK(&sd->work_struct, vicam_dostream);

	return 0;
}

/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
	int ret;
	const struct ihex_binrec *rec;
	const struct firmware *uninitialized_var(fw);
	u8 *firmware_buf;

	ret = request_ihex_firmware(&fw, VICAM_FIRMWARE,
				    &gspca_dev->dev->dev);
	if (ret) {
		pr_err("Failed to load \"vicam/firmware.fw\": %d\n", ret);
		return ret;
	}

	firmware_buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
	if (!firmware_buf) {
		ret = -ENOMEM;
		goto exit;
	}
	for (rec = (void *)fw->data; rec; rec = ihex_next_binrec(rec)) {
		memcpy(firmware_buf, rec->data, be16_to_cpu(rec->len));
		ret = vicam_control_msg(gspca_dev, 0xff, 0, 0, firmware_buf,
					be16_to_cpu(rec->len));
		if (ret < 0)
			break;
	}

	kfree(firmware_buf);
exit:
	release_firmware(fw);
	return ret;
}

/* Set up for getting frames. */
static int sd_start(struct gspca_dev *gspca_dev)
{
	struct sd *sd = (struct sd *)gspca_dev;
	int ret;

	ret = vicam_set_camera_power(gspca_dev, 1);
	if (ret < 0)
		return ret;

	schedule_work(&sd->work_struct);

	return 0;
}

/* called on streamoff with alt==0 and on disconnect */
/* the usb_lock is held at entry - restore on exit */
static void sd_stop0(struct gspca_dev *gspca_dev)
{
	struct sd *dev = (struct sd *)gspca_dev;

	/* wait for the work queue to terminate */
	mutex_unlock(&gspca_dev->usb_lock);
	/* This waits for vicam_dostream to finish */
	flush_work(&dev->work_struct);
	mutex_lock(&gspca_dev->usb_lock);

	if (gspca_dev->present)
		vicam_set_camera_power(gspca_dev, 0);
}

static int sd_init_controls(struct gspca_dev *gspca_dev)
{
	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;

	gspca_dev->vdev.ctrl_handler = hdl;
	v4l2_ctrl_handler_init(hdl, 2);
	gspca_dev->exposure = v4l2_ctrl_new_std(hdl, NULL,
			V4L2_CID_EXPOSURE, 0, 2047, 1, 256);
	gspca_dev->gain = v4l2_ctrl_new_std(hdl, NULL,
			V4L2_CID_GAIN, 0, 255, 1, 200);

	if (hdl->error) {
		pr_err("Could not initialize controls\n");
		return hdl->error;
	}
	return 0;
}

/* Table of supported USB devices */
static const struct usb_device_id device_table[] = {
	{USB_DEVICE(0x04c1, 0x009d)},
	{USB_DEVICE(0x0602, 0x1001)},
	{}
};

MODULE_DEVICE_TABLE(usb, device_table);

/* sub-driver description */
static const struct sd_desc sd_desc = {
	.name   = MODULE_NAME,
	.config = sd_config,
	.init   = sd_init,
	.init_controls = sd_init_controls,
	.start  = sd_start,
	.stop0  = sd_stop0,
};

/* -- 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,
	.reset_resume = gspca_resume,
#endif
};

module_usb_driver(sd_driver);
Commit	Line	Data
49b61ec9 HG	1	/*
	2	* gspca ViCam subdriver
	3	*
	4	* Copyright (C) 2011 Hans de Goede <hdegoede@redhat.com>
	5	*
	6	* Based on the usbvideo vicam driver, which is:
	7	*
	8	* Copyright (c) 2002 Joe Burks (jburks@wavicle.org),
ccb7cc00	9	* Chris Cheney (chris.cheney@gmail.com),
49b61ec9 HG	10	* Pavel Machek (pavel@ucw.cz),
	11	* John Tyner (jtyner@cs.ucr.edu),
	12	* Monroe Williams (monroe@pobox.com)
	13	*
	14	* This program is free software; you can redistribute it and/or modify
	15	* it under the terms of the GNU General Public License as published by
	16	* the Free Software Foundation; either version 2 of the License, or
	17	* any later version.
	18	*
	19	* This program is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	27	*/
	28
133a9fe9 JP	29	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
133a9fe9 JP	30
49b61ec9 HG	31	#define MODULE_NAME "vicam"
	32	#define HEADER_SIZE 64
	33
	34	#include <linux/workqueue.h>
	35	#include <linux/slab.h>
	36	#include <linux/firmware.h>
	37	#include <linux/ihex.h>
	38	#include "gspca.h"
	39
d74185b4 TG	40	#define VICAM_FIRMWARE "vicam/firmware.fw"
d74185b4 TG	41
49b61ec9 HG	42	MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
	43	MODULE_DESCRIPTION("GSPCA ViCam USB Camera Driver");
	44	MODULE_LICENSE("GPL");
d74185b4	45	MODULE_FIRMWARE(VICAM_FIRMWARE);
49b61ec9	46
49b61ec9 HG	47	struct sd {
	48	struct gspca_dev gspca_dev; /* !! must be the first item */
	49	struct work_struct work_struct;
49b61ec9 HG	50	};
	51
	52	/* The vicam sensor has a resolution of 512 x 244, with I believe square
	53	pixels, but this is forced to a 4:3 ratio by optics. So it has
	54	non square pixels :( */
	55	static struct v4l2_pix_format vicam_mode[] = {
	56	{ 256, 122, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	57	.bytesperline = 256,
	58	.sizeimage = 256 * 122,
	59	.colorspace = V4L2_COLORSPACE_SRGB,},
	60	/* 2 modes with somewhat more square pixels */
	61	{ 256, 200, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	62	.bytesperline = 256,
	63	.sizeimage = 256 * 200,
	64	.colorspace = V4L2_COLORSPACE_SRGB,},
	65	{ 256, 240, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	66	.bytesperline = 256,
	67	.sizeimage = 256 * 240,
	68	.colorspace = V4L2_COLORSPACE_SRGB,},
	69	#if 0 /* This mode has extremely non square pixels, testing use only */
	70	{ 512, 122, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	71	.bytesperline = 512,
	72	.sizeimage = 512 * 122,
	73	.colorspace = V4L2_COLORSPACE_SRGB,},
	74	#endif
	75	{ 512, 244, V4L2_PIX_FMT_SGRBG8, V4L2_FIELD_NONE,
	76	.bytesperline = 512,
	77	.sizeimage = 512 * 244,
	78	.colorspace = V4L2_COLORSPACE_SRGB,},
	79	};
	80
49b61ec9 HG	81	static int vicam_control_msg(struct gspca_dev *gspca_dev, u8 request,
	82	u16 value, u16 index, u8 *data, u16 len)
	83	{
	84	int ret;
	85
	86	ret = usb_control_msg(gspca_dev->dev,
	87	usb_sndctrlpipe(gspca_dev->dev, 0),
	88	request,
	89	USB_DIR_OUT \| USB_TYPE_VENDOR \| USB_RECIP_DEVICE,
	90	value, index, data, len, 1000);
	91	if (ret < 0)
133a9fe9	92	pr_err("control msg req %02X error %d\n", request, ret);
49b61ec9 HG	93
	94	return ret;
	95	}
	96
	97	static int vicam_set_camera_power(struct gspca_dev *gspca_dev, int state)
	98	{
	99	int ret;
	100
	101	ret = vicam_control_msg(gspca_dev, 0x50, state, 0, NULL, 0);
	102	if (ret < 0)
	103	return ret;
	104
	105	if (state)
	106	ret = vicam_control_msg(gspca_dev, 0x55, 1, 0, NULL, 0);
	107
	108	return ret;
	109	}
	110
	111	/*
844db450	112	* request and read a block of data
49b61ec9 HG	113	*/
	114	static int vicam_read_frame(struct gspca_dev gspca_dev, u8 data, int size)
	115	{
49b61ec9 HG	116	int ret, unscaled_height, act_len = 0;
49b61ec9 HG	117	u8 *req_data = gspca_dev->usb_buf;
4910adf1 HV	118	s32 expo = v4l2_ctrl_g_ctrl(gspca_dev->exposure);
4910adf1 HV	119	s32 gain = v4l2_ctrl_g_ctrl(gspca_dev->gain);
49b61ec9 HG	120
49b61ec9 HG	121	memset(req_data, 0, 16);
4910adf1	122	req_data[0] = gain;
1966bc2a	123	if (gspca_dev->pixfmt.width == 256)
49b61ec9	124	req_data[1] \|= 0x01; /* low nibble x-scale */
1966bc2a	125	if (gspca_dev->pixfmt.height <= 122) {
49b61ec9	126	req_data[1] \|= 0x10; /* high nibble y-scale */
1966bc2a	127	unscaled_height = gspca_dev->pixfmt.height * 2;
49b61ec9	128	} else
1966bc2a	129	unscaled_height = gspca_dev->pixfmt.height;
49b61ec9 HG	130	req_data[2] = 0x90; /* unknown, does not seem to do anything */
	131	if (unscaled_height <= 200)
	132	req_data[3] = 0x06; /* vend? */
	133	else if (unscaled_height <= 242) /* Yes 242 not 240 */
	134	req_data[3] = 0x07; /* vend? */
	135	else /* Up to 244 lines with req_data[3] == 0x08 */
	136	req_data[3] = 0x08; /* vend? */
	137
4910adf1	138	if (expo < 256) {
49b61ec9	139	/* Frame rate maxed out, use partial frame expo time */
4910adf1	140	req_data[4] = 255 - expo;
49b61ec9 HG	141	req_data[5] = 0x00;
	142	req_data[6] = 0x00;
	143	req_data[7] = 0x01;
	144	} else {
	145	/* Modify frame rate */
	146	req_data[4] = 0x00;
	147	req_data[5] = 0x00;
4910adf1 HV	148	req_data[6] = expo & 0xFF;
4910adf1 HV	149	req_data[7] = expo >> 8;
49b61ec9 HG	150	}
	151	req_data[8] = ((244 - unscaled_height) / 2) & ~0x01; /* vstart */
	152	/* bytes 9-15 do not seem to affect exposure or image quality */
	153
	154	mutex_lock(&gspca_dev->usb_lock);
	155	ret = vicam_control_msg(gspca_dev, 0x51, 0x80, 0, req_data, 16);
	156	mutex_unlock(&gspca_dev->usb_lock);
	157	if (ret < 0)
	158	return ret;
	159
	160	ret = usb_bulk_msg(gspca_dev->dev,
	161	usb_rcvbulkpipe(gspca_dev->dev, 0x81),
	162	data, size, &act_len, 10000);
	163	/* successful, it returns 0, otherwise negative */
	164	if (ret < 0 \|\| act_len != size) {
133a9fe9 JP	165	pr_err("bulk read fail (%d) len %d/%d\n",
133a9fe9 JP	166	ret, act_len, size);
49b61ec9 HG	167	return -EIO;
	168	}
	169	return 0;
	170	}
	171
844db450 HG	172	/*
844db450 HG	173	* This function is called as a workqueue function and runs whenever the camera
49b61ec9 HG	174	* is streaming data. Because it is a workqueue function it is allowed to sleep
49b61ec9 HG	175	* so we can use synchronous USB calls. To avoid possible collisions with other
844db450 HG	176	* threads attempting to use gspca_dev->usb_buf we take the usb_lock when
	177	* performing USB operations using it. In practice we don't really need this
	178	* as the cameras controls are only written from the workqueue.
49b61ec9 HG	179	*/
	180	static void vicam_dostream(struct work_struct *work)
	181	{
	182	struct sd *sd = container_of(work, struct sd, work_struct);
	183	struct gspca_dev *gspca_dev = &sd->gspca_dev;
	184	int ret, frame_sz;
	185	u8 *buffer;
	186
	187	frame_sz = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].sizeimage +
	188	HEADER_SIZE;
	189	buffer = kmalloc(frame_sz, GFP_KERNEL \| GFP_DMA);
	190	if (!buffer) {
133a9fe9	191	pr_err("Couldn't allocate USB buffer\n");
49b61ec9 HG	192	goto exit;
	193	}
	194
345321dc	195	while (gspca_dev->present && gspca_dev->streaming) {
4ad34da0 HV	196	#ifdef CONFIG_PM
	197	if (gspca_dev->frozen)
	198	break;
	199	#endif
49b61ec9 HG	200	ret = vicam_read_frame(gspca_dev, buffer, frame_sz);
	201	if (ret < 0)
	202	break;
	203
	204	/* Note the frame header contents seem to be completely
	205	constant, they do not change with either image, or
	206	settings. So we simply discard it. The frames have
	207	a very similar 64 byte footer, which we don't even
	208	bother reading from the cam */
	209	gspca_frame_add(gspca_dev, FIRST_PACKET,
	210	buffer + HEADER_SIZE,
	211	frame_sz - HEADER_SIZE);
	212	gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
	213	}
	214	exit:
	215	kfree(buffer);
	216	}
	217
	218	/* This function is called at probe time just before sd_init */
	219	static int sd_config(struct gspca_dev *gspca_dev,
	220	const struct usb_device_id *id)
	221	{
	222	struct cam *cam = &gspca_dev->cam;
	223	struct sd sd = (struct sd )gspca_dev;
	224
	225	/* We don't use the buffer gspca allocates so make it small. */
	226	cam->bulk = 1;
	227	cam->bulk_size = 64;
	228	cam->cam_mode = vicam_mode;
	229	cam->nmodes = ARRAY_SIZE(vicam_mode);
49b61ec9 HG	230
	231	INIT_WORK(&sd->work_struct, vicam_dostream);
	232
	233	return 0;
	234	}
	235
	236	/* this function is called at probe and resume time */
	237	static int sd_init(struct gspca_dev *gspca_dev)
	238	{
	239	int ret;
	240	const struct ihex_binrec *rec;
	241	const struct firmware *uninitialized_var(fw);
	242	u8 *firmware_buf;
	243
d74185b4	244	ret = request_ihex_firmware(&fw, VICAM_FIRMWARE,
49b61ec9 HG	245	&gspca_dev->dev->dev);
49b61ec9 HG	246	if (ret) {
133a9fe9	247	pr_err("Failed to load \"vicam/firmware.fw\": %d\n", ret);
49b61ec9 HG	248	return ret;
	249	}
	250
	251	firmware_buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
	252	if (!firmware_buf) {
	253	ret = -ENOMEM;
	254	goto exit;
	255	}
	256	for (rec = (void *)fw->data; rec; rec = ihex_next_binrec(rec)) {
	257	memcpy(firmware_buf, rec->data, be16_to_cpu(rec->len));
	258	ret = vicam_control_msg(gspca_dev, 0xff, 0, 0, firmware_buf,
	259	be16_to_cpu(rec->len));
	260	if (ret < 0)
	261	break;
	262	}
	263
	264	kfree(firmware_buf);
	265	exit:
	266	release_firmware(fw);
	267	return ret;
	268	}
	269
	270	/* Set up for getting frames. */
	271	static int sd_start(struct gspca_dev *gspca_dev)
	272	{
	273	struct sd sd = (struct sd )gspca_dev;
	274	int ret;
	275
	276	ret = vicam_set_camera_power(gspca_dev, 1);
	277	if (ret < 0)
	278	return ret;
	279
95705083	280	schedule_work(&sd->work_struct);
49b61ec9 HG	281
	282	return 0;
	283	}
	284
	285	/* called on streamoff with alt==0 and on disconnect */
	286	/* the usb_lock is held at entry - restore on exit */
	287	static void sd_stop0(struct gspca_dev *gspca_dev)
	288	{
	289	struct sd dev = (struct sd )gspca_dev;
	290
	291	/* wait for the work queue to terminate */
	292	mutex_unlock(&gspca_dev->usb_lock);
	293	/* This waits for vicam_dostream to finish */
95705083	294	flush_work(&dev->work_struct);
49b61ec9 HG	295	mutex_lock(&gspca_dev->usb_lock);
49b61ec9 HG	296
345321dc	297	if (gspca_dev->present)
27d3e366	298	vicam_set_camera_power(gspca_dev, 0);
49b61ec9 HG	299	}
49b61ec9 HG	300
4910adf1 HV	301	static int sd_init_controls(struct gspca_dev *gspca_dev)
	302	{
	303	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
	304
	305	gspca_dev->vdev.ctrl_handler = hdl;
	306	v4l2_ctrl_handler_init(hdl, 2);
	307	gspca_dev->exposure = v4l2_ctrl_new_std(hdl, NULL,
	308	V4L2_CID_EXPOSURE, 0, 2047, 1, 256);
	309	gspca_dev->gain = v4l2_ctrl_new_std(hdl, NULL,
	310	V4L2_CID_GAIN, 0, 255, 1, 200);
	311
	312	if (hdl->error) {
	313	pr_err("Could not initialize controls\n");
	314	return hdl->error;
	315	}
	316	return 0;
	317	}
	318
49b61ec9 HG	319	/* Table of supported USB devices */
	320	static const struct usb_device_id device_table[] = {
	321	{USB_DEVICE(0x04c1, 0x009d)},
	322	{USB_DEVICE(0x0602, 0x1001)},
	323	{}
	324	};
	325
	326	MODULE_DEVICE_TABLE(usb, device_table);
	327
	328	/* sub-driver description */
	329	static const struct sd_desc sd_desc = {
	330	.name = MODULE_NAME,
49b61ec9 HG	331	.config = sd_config,
49b61ec9 HG	332	.init = sd_init,
4910adf1	333	.init_controls = sd_init_controls,
49b61ec9 HG	334	.start = sd_start,
	335	.stop0 = sd_stop0,
	336	};
	337
	338	/* -- device connect -- */
	339	static int sd_probe(struct usb_interface *intf,
	340	const struct usb_device_id *id)
	341	{
	342	return gspca_dev_probe(intf, id,
	343	&sd_desc,
	344	sizeof(struct sd),
	345	THIS_MODULE);
	346	}
	347
	348	static struct usb_driver sd_driver = {
	349	.name = MODULE_NAME,
	350	.id_table = device_table,
	351	.probe = sd_probe,
	352	.disconnect = gspca_disconnect,
	353	#ifdef CONFIG_PM
	354	.suspend = gspca_suspend,
	355	.resume = gspca_resume,
8bb58964	356	.reset_resume = gspca_resume,
49b61ec9 HG	357	#endif
	358	};
	359
ecb3b2b3	360	module_usb_driver(sd_driver);