[net-next-2.6.git] / drivers / media / video / hdpvr / hdpvr-core.c

/*
 * Hauppauge HD PVR USB driver
 *
 * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
 * Copyright (C) 2008      Janne Grunau (j@jannau.net)
 * Copyright (C) 2008      John Poet
 *
 *	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, version 2.
 *
 */

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <asm/atomic.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#include <linux/i2c.h>

#include <linux/videodev2.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-common.h>

#include "hdpvr.h"

static int video_nr[HDPVR_MAX] = {[0 ... (HDPVR_MAX - 1)] = UNSET};
module_param_array(video_nr, int, NULL, 0);
MODULE_PARM_DESC(video_nr, "video device number (-1=Auto)");

/* holds the number of currently registered devices */
static atomic_t dev_nr = ATOMIC_INIT(-1);

int hdpvr_debug;
module_param(hdpvr_debug, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(hdpvr_debug, "enable debugging output");

uint default_video_input = HDPVR_VIDEO_INPUTS;
module_param(default_video_input, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(default_video_input, "default video input: 0=Component / "
		 "1=S-Video / 2=Composite");

uint default_audio_input = HDPVR_AUDIO_INPUTS;
module_param(default_audio_input, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(default_audio_input, "default audio input: 0=RCA back / "
		 "1=RCA front / 2=S/PDIF");

static int boost_audio;
module_param(boost_audio, bool, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(boost_audio, "boost the audio signal");


/* table of devices that work with this driver */
static struct usb_device_id hdpvr_table[] = {
	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID) },
	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID1) },
	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID2) },
	{ }					/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, hdpvr_table);


void hdpvr_delete(struct hdpvr_device *dev)
{
	hdpvr_free_buffers(dev);

	if (dev->video_dev)
		video_device_release(dev->video_dev);

	usb_put_dev(dev->udev);
}

static void challenge(u8 *bytes)
{
	u64 *i64P, tmp64;
	uint i, idx;

	for (idx = 0; idx < 32; ++idx) {

		if (idx & 0x3)
			bytes[(idx >> 3) + 3] = bytes[(idx >> 2) & 0x3];

		switch (idx & 0x3) {
		case 0x3:
			bytes[2] += bytes[3] * 4 + bytes[4] + bytes[5];
			bytes[4] += bytes[(idx & 0x1) * 2] * 9 + 9;
			break;
		case 0x1:
			bytes[0] *= 8;
			bytes[0] += 7*idx + 4;
			bytes[6] += bytes[3] * 3;
			break;
		case 0x0:
			bytes[3 - (idx >> 3)] = bytes[idx >> 2];
			bytes[5] += bytes[6] * 3;
			for (i = 0; i < 3; i++)
				bytes[3] *= bytes[3] + 1;
			break;
		case 0x2:
			for (i = 0; i < 3; i++)
				bytes[1] *= bytes[6] + 1;
			for (i = 0; i < 3; i++) {
				i64P = (u64 *)bytes;
				tmp64 = le64_to_cpup(i64P);
				tmp64 <<= bytes[7] & 0x0f;
				*i64P += cpu_to_le64(tmp64);
			}
			break;
		}
	}
}

/* try to init the device like the windows driver */
static int device_authorization(struct hdpvr_device *dev)
{

	int ret, retval = -ENOMEM;
	char request_type = 0x38, rcv_request = 0x81;
	char *response;
#ifdef HDPVR_DEBUG
	size_t buf_size = 46;
	char *print_buf = kzalloc(5*buf_size+1, GFP_KERNEL);
	if (!print_buf) {
		v4l2_err(&dev->v4l2_dev, "Out of memory\n");
		return retval;
	}
#endif

	mutex_lock(&dev->usbc_mutex);
	ret = usb_control_msg(dev->udev,
			      usb_rcvctrlpipe(dev->udev, 0),
			      rcv_request, 0x80 | request_type,
			      0x0400, 0x0003,
			      dev->usbc_buf, 46,
			      10000);
	if (ret != 46) {
		v4l2_err(&dev->v4l2_dev,
			 "unexpected answer of status request, len %d\n", ret);
		goto unlock;
	}
#ifdef HDPVR_DEBUG
	else {
		hex_dump_to_buffer(dev->usbc_buf, 46, 16, 1, print_buf,
				   sizeof(print_buf), 0);
		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
			 "Status request returned, len %d: %s\n",
			 ret, print_buf);
	}
#endif
	if (dev->usbc_buf[1] == HDPVR_FIRMWARE_VERSION) {
		dev->flags &= ~HDPVR_FLAG_AC3_CAP;
	} else if (dev->usbc_buf[1] == HDPVR_FIRMWARE_VERSION_AC3) {
		dev->flags |= HDPVR_FLAG_AC3_CAP;
	} else if (dev->usbc_buf[1] > HDPVR_FIRMWARE_VERSION_AC3) {
		v4l2_info(&dev->v4l2_dev, "untested firmware version 0x%x, "
			  "the driver might not work\n", dev->usbc_buf[1]);
		dev->flags |= HDPVR_FLAG_AC3_CAP;
	} else {
		v4l2_err(&dev->v4l2_dev, "unknown firmware version 0x%x\n",
			dev->usbc_buf[1]);
		ret = -EINVAL;
		goto unlock;
	}

	response = dev->usbc_buf+38;
#ifdef HDPVR_DEBUG
	hex_dump_to_buffer(response, 8, 16, 1, print_buf, sizeof(print_buf), 0);
	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %s\n",
		 print_buf);
#endif
	challenge(response);
#ifdef HDPVR_DEBUG
	hex_dump_to_buffer(response, 8, 16, 1, print_buf, sizeof(print_buf), 0);
	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %s\n",
		 print_buf);
#endif

	msleep(100);
	ret = usb_control_msg(dev->udev,
			      usb_sndctrlpipe(dev->udev, 0),
			      0xd1, 0x00 | request_type,
			      0x0000, 0x0000,
			      response, 8,
			      10000);
	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
		 "magic request returned %d\n", ret);

	retval = ret != 8;
unlock:
	mutex_unlock(&dev->usbc_mutex);
	return retval;
}

static int hdpvr_device_init(struct hdpvr_device *dev)
{
	int ret;
	u8 *buf;
	struct hdpvr_video_info *vidinf;

	if (device_authorization(dev))
		return -EACCES;

	/* default options for init */
	hdpvr_set_options(dev);

	/* set filter options */
	mutex_lock(&dev->usbc_mutex);
	buf = dev->usbc_buf;
	buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00;
	ret = usb_control_msg(dev->udev,
			      usb_sndctrlpipe(dev->udev, 0),
			      0x01, 0x38,
			      CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX,
			      buf, 4,
			      1000);
	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
		 "control request returned %d\n", ret);
	mutex_unlock(&dev->usbc_mutex);

	vidinf = get_video_info(dev);
	if (!vidinf)
		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
			"no valid video signal or device init failed\n");
	else
		kfree(vidinf);

	/* enable fan and bling leds */
	mutex_lock(&dev->usbc_mutex);
	buf[0] = 0x1;
	ret = usb_control_msg(dev->udev,
			      usb_sndctrlpipe(dev->udev, 0),
			      0xd4, 0x38, 0, 0, buf, 1,
			      1000);
	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
		 "control request returned %d\n", ret);

	/* boost analog audio */
	buf[0] = boost_audio;
	ret = usb_control_msg(dev->udev,
			      usb_sndctrlpipe(dev->udev, 0),
			      0xd5, 0x38, 0, 0, buf, 1,
			      1000);
	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
		 "control request returned %d\n", ret);
	mutex_unlock(&dev->usbc_mutex);

	dev->status = STATUS_IDLE;
	return 0;
}

static const struct hdpvr_options hdpvr_default_options = {
	.video_std	= HDPVR_60HZ,
	.video_input	= HDPVR_COMPONENT,
	.audio_input	= HDPVR_RCA_BACK,
	.bitrate	= 65, /* 6 mbps */
	.peak_bitrate	= 90, /* 9 mbps */
	.bitrate_mode	= HDPVR_CONSTANT,
	.gop_mode	= HDPVR_SIMPLE_IDR_GOP,
	.audio_codec	= V4L2_MPEG_AUDIO_ENCODING_AAC,
	.brightness	= 0x86,
	.contrast	= 0x80,
	.hue		= 0x80,
	.saturation	= 0x80,
	.sharpness	= 0x80,
};

static int hdpvr_probe(struct usb_interface *interface,
		       const struct usb_device_id *id)
{
	struct hdpvr_device *dev;
	struct usb_host_interface *iface_desc;
	struct usb_endpoint_descriptor *endpoint;
	size_t buffer_size;
	int i;
	int retval = -ENOMEM;

	/* allocate memory for our device state and initialize it */
	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	if (!dev) {
		err("Out of memory");
		goto error;
	}

	/* register v4l2_device early so it can be used for printks */
	if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
		err("v4l2_device_register failed");
		goto error;
	}

	mutex_init(&dev->io_mutex);
	mutex_init(&dev->i2c_mutex);
	mutex_init(&dev->usbc_mutex);
	dev->usbc_buf = kmalloc(64, GFP_KERNEL);
	if (!dev->usbc_buf) {
		v4l2_err(&dev->v4l2_dev, "Out of memory\n");
		goto error;
	}

	init_waitqueue_head(&dev->wait_buffer);
	init_waitqueue_head(&dev->wait_data);

	dev->workqueue = create_singlethread_workqueue("hdpvr_buffer");
	if (!dev->workqueue)
		goto error;

	/* init video transfer queues */
	INIT_LIST_HEAD(&dev->free_buff_list);
	INIT_LIST_HEAD(&dev->rec_buff_list);

	dev->options = hdpvr_default_options;

	if (default_video_input < HDPVR_VIDEO_INPUTS)
		dev->options.video_input = default_video_input;

	if (default_audio_input < HDPVR_AUDIO_INPUTS)
		dev->options.audio_input = default_audio_input;

	dev->udev = usb_get_dev(interface_to_usbdev(interface));

	/* set up the endpoint information */
	/* use only the first bulk-in and bulk-out endpoints */
	iface_desc = interface->cur_altsetting;
	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
		endpoint = &iface_desc->endpoint[i].desc;

		if (!dev->bulk_in_endpointAddr &&
		    usb_endpoint_is_bulk_in(endpoint)) {
			/* USB interface description is buggy, reported max
			 * packet size is 512 bytes, windows driver uses 8192 */
			buffer_size = 8192;
			dev->bulk_in_size = buffer_size;
			dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
		}

	}
	if (!dev->bulk_in_endpointAddr) {
		v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
		goto error;
	}

	/* init the device */
	if (hdpvr_device_init(dev)) {
		v4l2_err(&dev->v4l2_dev, "device init failed\n");
		goto error;
	}

	mutex_lock(&dev->io_mutex);
	if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
		mutex_unlock(&dev->io_mutex);
		v4l2_err(&dev->v4l2_dev,
			 "allocating transfer buffers failed\n");
		goto error;
	}
	mutex_unlock(&dev->io_mutex);

	if (hdpvr_register_videodev(dev, &interface->dev,
				    video_nr[atomic_inc_return(&dev_nr)])) {
		v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
		goto error;
	}

#ifdef CONFIG_I2C
	/* until i2c is working properly */
	retval = 0; /* hdpvr_register_i2c_adapter(dev); */
	if (retval < 0) {
		v4l2_err(&dev->v4l2_dev, "registering i2c adapter failed\n");
		goto error;
	}
#endif /* CONFIG_I2C */

	/* save our data pointer in this interface device */
	usb_set_intfdata(interface, dev);

	/* let the user know what node this device is now attached to */
	v4l2_info(&dev->v4l2_dev, "device now attached to %s\n",
		  video_device_node_name(dev->video_dev));
	return 0;

error:
	if (dev) {
		/* this frees allocated memory */
		hdpvr_delete(dev);
	}
	return retval;
}

static void hdpvr_disconnect(struct usb_interface *interface)
{
	struct hdpvr_device *dev;

	dev = usb_get_intfdata(interface);
	usb_set_intfdata(interface, NULL);

	/* prevent more I/O from starting and stop any ongoing */
	mutex_lock(&dev->io_mutex);
	dev->status = STATUS_DISCONNECTED;
	v4l2_device_disconnect(&dev->v4l2_dev);
	video_unregister_device(dev->video_dev);
	wake_up_interruptible(&dev->wait_data);
	wake_up_interruptible(&dev->wait_buffer);
	mutex_unlock(&dev->io_mutex);
	msleep(100);
	flush_workqueue(dev->workqueue);
	mutex_lock(&dev->io_mutex);
	hdpvr_cancel_queue(dev);
	destroy_workqueue(dev->workqueue);
	mutex_unlock(&dev->io_mutex);

	/* deregister I2C adapter */
#ifdef CONFIG_I2C
	mutex_lock(&dev->i2c_mutex);
	if (dev->i2c_adapter)
		i2c_del_adapter(dev->i2c_adapter);
	kfree(dev->i2c_adapter);
	dev->i2c_adapter = NULL;
	mutex_unlock(&dev->i2c_mutex);
#endif /* CONFIG_I2C */

	atomic_dec(&dev_nr);

	v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
		  video_device_node_name(dev->video_dev));

	v4l2_device_unregister(&dev->v4l2_dev);
	kfree(dev->usbc_buf);
	kfree(dev);
}


static struct usb_driver hdpvr_usb_driver = {
	.name =		"hdpvr",
	.probe =	hdpvr_probe,
	.disconnect =	hdpvr_disconnect,
	.id_table =	hdpvr_table,
};

static int __init hdpvr_init(void)
{
	int result;

	/* register this driver with the USB subsystem */
	result = usb_register(&hdpvr_usb_driver);
	if (result)
		err("usb_register failed. Error number %d", result);

	return result;
}

static void __exit hdpvr_exit(void)
{
	/* deregister this driver with the USB subsystem */
	usb_deregister(&hdpvr_usb_driver);
}

module_init(hdpvr_init);
module_exit(hdpvr_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Janne Grunau");
MODULE_DESCRIPTION("Hauppauge HD PVR driver");
Commit	Line	Data
9aba42ef	1	/*
e86da6f0	2	* Hauppauge HD PVR USB driver
9aba42ef JG	3	*
	4	* Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
	5	* Copyright (C) 2008 Janne Grunau (j@jannau.net)
	6	* Copyright (C) 2008 John Poet
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation, version 2.
	11	*
	12	*/
	13
	14	#include <linux/kernel.h>
	15	#include <linux/errno.h>
	16	#include <linux/init.h>
	17	#include <linux/slab.h>
	18	#include <linux/module.h>
	19	#include <linux/uaccess.h>
	20	#include <asm/atomic.h>
	21	#include <linux/usb.h>
	22	#include <linux/mutex.h>
	23	#include <linux/i2c.h>
	24
	25	#include <linux/videodev2.h>
	26	#include <media/v4l2-dev.h>
	27	#include <media/v4l2-common.h>
	28
	29	#include "hdpvr.h"
	30
	31	static int video_nr[HDPVR_MAX] = {[0 ... (HDPVR_MAX - 1)] = UNSET};
	32	module_param_array(video_nr, int, NULL, 0);
	33	MODULE_PARM_DESC(video_nr, "video device number (-1=Auto)");
	34
	35	/* holds the number of currently registered devices */
	36	static atomic_t dev_nr = ATOMIC_INIT(-1);
	37
	38	int hdpvr_debug;
	39	module_param(hdpvr_debug, int, S_IRUGO\|S_IWUSR);
	40	MODULE_PARM_DESC(hdpvr_debug, "enable debugging output");
	41
	42	uint default_video_input = HDPVR_VIDEO_INPUTS;
	43	module_param(default_video_input, uint, S_IRUGO\|S_IWUSR);
	44	MODULE_PARM_DESC(default_video_input, "default video input: 0=Component / "
	45	"1=S-Video / 2=Composite");
	46
	47	uint default_audio_input = HDPVR_AUDIO_INPUTS;
	48	module_param(default_audio_input, uint, S_IRUGO\|S_IWUSR);
	49	MODULE_PARM_DESC(default_audio_input, "default audio input: 0=RCA back / "
	50	"1=RCA front / 2=S/PDIF");
	51
	52	static int boost_audio;
	53	module_param(boost_audio, bool, S_IRUGO\|S_IWUSR);
	54	MODULE_PARM_DESC(boost_audio, "boost the audio signal");
	55
	56
	57	/* table of devices that work with this driver */
	58	static struct usb_device_id hdpvr_table[] = {
	59	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID) },
	60	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID1) },
	61	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID2) },
	62	{ } /* Terminating entry */
	63	};
	64	MODULE_DEVICE_TABLE(usb, hdpvr_table);
	65
	66
67	void hdpvr_delete(struct hdpvr_device *dev)
68	{
69	hdpvr_free_buffers(dev);
70
71	if (dev->video_dev)
72	video_device_release(dev->video_dev);
73
74	usb_put_dev(dev->udev);
75	}
76
77	static void challenge(u8 *bytes)
78	{
79	u64 *i64P, tmp64;
80	uint i, idx;
81
82	for (idx = 0; idx < 32; ++idx) {
83
84	if (idx & 0x3)
85	bytes[(idx >> 3) + 3] = bytes[(idx >> 2) & 0x3];
86
87	switch (idx & 0x3) {
88	case 0x3:
89	bytes[2] += bytes[3] * 4 + bytes[4] + bytes[5];
90	bytes[4] += bytes[(idx & 0x1) * 2] * 9 + 9;
91	break;
92	case 0x1:
93	bytes[0] *= 8;
94	bytes[0] += 7*idx + 4;
95	bytes[6] += bytes[3] * 3;
96	break;
97	case 0x0:
98	bytes[3 - (idx >> 3)] = bytes[idx >> 2];
99	bytes[5] += bytes[6] * 3;
100	for (i = 0; i < 3; i++)
101	bytes[3] *= bytes[3] + 1;
102	break;
103	case 0x2:
104	for (i = 0; i < 3; i++)
105	bytes[1] *= bytes[6] + 1;
106	for (i = 0; i < 3; i++) {
107	i64P = (u64 *)bytes;
108	tmp64 = le64_to_cpup(i64P);
109	tmp64 <<= bytes[7] & 0x0f;
110	*i64P += cpu_to_le64(tmp64);
111	}
112	break;
113	}
114	}
115	}
116
117	/* try to init the device like the windows driver */
118	static int device_authorization(struct hdpvr_device *dev)
119	{
120
121	int ret, retval = -ENOMEM;
122	char request_type = 0x38, rcv_request = 0x81;
123	char *response;
124	#ifdef HDPVR_DEBUG
125	size_t buf_size = 46;
126	char print_buf = kzalloc(5buf_size+1, GFP_KERNEL);
127	if (!print_buf) {
9ef77adf	128	v4l2_err(&dev->v4l2_dev, "Out of memory\n");
00c1e216	129	return retval;
9aba42ef JG	130	}
	131	#endif
	132
	133	mutex_lock(&dev->usbc_mutex);
	134	ret = usb_control_msg(dev->udev,
	135	usb_rcvctrlpipe(dev->udev, 0),
	136	rcv_request, 0x80 \| request_type,
	137	0x0400, 0x0003,
	138	dev->usbc_buf, 46,
	139	10000);
	140	if (ret != 46) {
9ef77adf JG	141	v4l2_err(&dev->v4l2_dev,
9ef77adf JG	142	"unexpected answer of status request, len %d\n", ret);
00c1e216	143	goto unlock;
9aba42ef JG	144	}
	145	#ifdef HDPVR_DEBUG
	146	else {
	147	hex_dump_to_buffer(dev->usbc_buf, 46, 16, 1, print_buf,
	148	sizeof(print_buf), 0);
9ef77adf JG	149	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
	150	"Status request returned, len %d: %s\n",
	151	ret, print_buf);
9aba42ef JG	152	}
	153	#endif
	154	if (dev->usbc_buf[1] == HDPVR_FIRMWARE_VERSION) {
	155	dev->flags &= ~HDPVR_FLAG_AC3_CAP;
	156	} else if (dev->usbc_buf[1] == HDPVR_FIRMWARE_VERSION_AC3) {
	157	dev->flags \|= HDPVR_FLAG_AC3_CAP;
	158	} else if (dev->usbc_buf[1] > HDPVR_FIRMWARE_VERSION_AC3) {
9ef77adf JG	159	v4l2_info(&dev->v4l2_dev, "untested firmware version 0x%x, "
9ef77adf JG	160	"the driver might not work\n", dev->usbc_buf[1]);
9aba42ef JG	161	dev->flags \|= HDPVR_FLAG_AC3_CAP;
9aba42ef JG	162	} else {
9ef77adf	163	v4l2_err(&dev->v4l2_dev, "unknown firmware version 0x%x\n",
9aba42ef JG	164	dev->usbc_buf[1]);
9aba42ef JG	165	ret = -EINVAL;
00c1e216	166	goto unlock;
9aba42ef JG	167	}
	168
	169	response = dev->usbc_buf+38;
	170	#ifdef HDPVR_DEBUG
	171	hex_dump_to_buffer(response, 8, 16, 1, print_buf, sizeof(print_buf), 0);
9ef77adf JG	172	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %s\n",
9ef77adf JG	173	print_buf);
9aba42ef JG	174	#endif
	175	challenge(response);
	176	#ifdef HDPVR_DEBUG
	177	hex_dump_to_buffer(response, 8, 16, 1, print_buf, sizeof(print_buf), 0);
9ef77adf JG	178	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %s\n",
9ef77adf JG	179	print_buf);
9aba42ef JG	180	#endif
	181
	182	msleep(100);
	183	ret = usb_control_msg(dev->udev,
	184	usb_sndctrlpipe(dev->udev, 0),
	185	0xd1, 0x00 \| request_type,
	186	0x0000, 0x0000,
	187	response, 8,
	188	10000);
9ef77adf JG	189	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	190	"magic request returned %d\n", ret);
9aba42ef JG	191
9aba42ef JG	192	retval = ret != 8;
00c1e216 JS	193	unlock:
00c1e216 JS	194	mutex_unlock(&dev->usbc_mutex);
9aba42ef JG	195	return retval;
	196	}
	197
	198	static int hdpvr_device_init(struct hdpvr_device *dev)
	199	{
	200	int ret;
	201	u8 *buf;
	202	struct hdpvr_video_info *vidinf;
	203
	204	if (device_authorization(dev))
	205	return -EACCES;
	206
	207	/* default options for init */
	208	hdpvr_set_options(dev);
	209
	210	/* set filter options */
	211	mutex_lock(&dev->usbc_mutex);
	212	buf = dev->usbc_buf;
	213	buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00;
	214	ret = usb_control_msg(dev->udev,
	215	usb_sndctrlpipe(dev->udev, 0),
	216	0x01, 0x38,
	217	CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX,
	218	buf, 4,
	219	1000);
9ef77adf JG	220	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	221	"control request returned %d\n", ret);
9aba42ef JG	222	mutex_unlock(&dev->usbc_mutex);
	223
	224	vidinf = get_video_info(dev);
	225	if (!vidinf)
9ef77adf	226	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9aba42ef JG	227	"no valid video signal or device init failed\n");
	228	else
	229	kfree(vidinf);
	230
	231	/* enable fan and bling leds */
	232	mutex_lock(&dev->usbc_mutex);
	233	buf[0] = 0x1;
	234	ret = usb_control_msg(dev->udev,
	235	usb_sndctrlpipe(dev->udev, 0),
	236	0xd4, 0x38, 0, 0, buf, 1,
	237	1000);
9ef77adf JG	238	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	239	"control request returned %d\n", ret);
9aba42ef JG	240
	241	/* boost analog audio */
	242	buf[0] = boost_audio;
	243	ret = usb_control_msg(dev->udev,
	244	usb_sndctrlpipe(dev->udev, 0),
	245	0xd5, 0x38, 0, 0, buf, 1,
	246	1000);
9ef77adf JG	247	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	248	"control request returned %d\n", ret);
9aba42ef JG	249	mutex_unlock(&dev->usbc_mutex);
	250
	251	dev->status = STATUS_IDLE;
	252	return 0;
	253	}
	254
	255	static const struct hdpvr_options hdpvr_default_options = {
	256	.video_std = HDPVR_60HZ,
	257	.video_input = HDPVR_COMPONENT,
	258	.audio_input = HDPVR_RCA_BACK,
	259	.bitrate = 65, /* 6 mbps */
	260	.peak_bitrate = 90, /* 9 mbps */
	261	.bitrate_mode = HDPVR_CONSTANT,
	262	.gop_mode = HDPVR_SIMPLE_IDR_GOP,
	263	.audio_codec = V4L2_MPEG_AUDIO_ENCODING_AAC,
	264	.brightness = 0x86,
	265	.contrast = 0x80,
	266	.hue = 0x80,
	267	.saturation = 0x80,
	268	.sharpness = 0x80,
	269	};
	270
	271	static int hdpvr_probe(struct usb_interface *interface,
	272	const struct usb_device_id *id)
	273	{
	274	struct hdpvr_device *dev;
	275	struct usb_host_interface *iface_desc;
	276	struct usb_endpoint_descriptor *endpoint;
	277	size_t buffer_size;
	278	int i;
	279	int retval = -ENOMEM;
	280
	281	/* allocate memory for our device state and initialize it */
	282	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	283	if (!dev) {
	284	err("Out of memory");
	285	goto error;
	286	}
06630aec JG	287
	288	/* register v4l2_device early so it can be used for printks */
	289	if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
	290	err("v4l2_device_register failed");
	291	goto error;
	292	}
	293
9aba42ef JG	294	mutex_init(&dev->io_mutex);
	295	mutex_init(&dev->i2c_mutex);
	296	mutex_init(&dev->usbc_mutex);
	297	dev->usbc_buf = kmalloc(64, GFP_KERNEL);
	298	if (!dev->usbc_buf) {
9ef77adf	299	v4l2_err(&dev->v4l2_dev, "Out of memory\n");
9aba42ef JG	300	goto error;
	301	}
	302
	303	init_waitqueue_head(&dev->wait_buffer);
	304	init_waitqueue_head(&dev->wait_data);
	305
	306	dev->workqueue = create_singlethread_workqueue("hdpvr_buffer");
	307	if (!dev->workqueue)
	308	goto error;
	309
	310	/* init video transfer queues */
	311	INIT_LIST_HEAD(&dev->free_buff_list);
	312	INIT_LIST_HEAD(&dev->rec_buff_list);
	313
	314	dev->options = hdpvr_default_options;
	315
	316	if (default_video_input < HDPVR_VIDEO_INPUTS)
	317	dev->options.video_input = default_video_input;
	318
	319	if (default_audio_input < HDPVR_AUDIO_INPUTS)
	320	dev->options.audio_input = default_audio_input;
	321
	322	dev->udev = usb_get_dev(interface_to_usbdev(interface));
	323
	324	/* set up the endpoint information */
	325	/* use only the first bulk-in and bulk-out endpoints */
	326	iface_desc = interface->cur_altsetting;
	327	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
	328	endpoint = &iface_desc->endpoint[i].desc;
	329
	330	if (!dev->bulk_in_endpointAddr &&
	331	usb_endpoint_is_bulk_in(endpoint)) {
	332	/* USB interface description is buggy, reported max
	333	* packet size is 512 bytes, windows driver uses 8192 */
	334	buffer_size = 8192;
	335	dev->bulk_in_size = buffer_size;
	336	dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
	337	}
	338
	339	}
	340	if (!dev->bulk_in_endpointAddr) {
9ef77adf	341	v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
9aba42ef JG	342	goto error;
	343	}
	344
	345	/* init the device */
	346	if (hdpvr_device_init(dev)) {
9ef77adf	347	v4l2_err(&dev->v4l2_dev, "device init failed\n");
9aba42ef JG	348	goto error;
	349	}
	350
	351	mutex_lock(&dev->io_mutex);
	352	if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
00c1e216	353	mutex_unlock(&dev->io_mutex);
9ef77adf JG	354	v4l2_err(&dev->v4l2_dev,
9ef77adf JG	355	"allocating transfer buffers failed\n");
9aba42ef JG	356	goto error;
	357	}
	358	mutex_unlock(&dev->io_mutex);
	359
a50ab291	360	if (hdpvr_register_videodev(dev, &interface->dev,
9aba42ef	361	video_nr[atomic_inc_return(&dev_nr)])) {
9ef77adf	362	v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
9aba42ef JG	363	goto error;
	364	}
	365
c457377a JG	366	#ifdef CONFIG_I2C
	367	/* until i2c is working properly */
	368	retval = 0; /* hdpvr_register_i2c_adapter(dev); */
	369	if (retval < 0) {
9ef77adf	370	v4l2_err(&dev->v4l2_dev, "registering i2c adapter failed\n");
c457377a JG	371	goto error;
	372	}
	373	#endif /* CONFIG_I2C */
9aba42ef JG	374
	375	/* save our data pointer in this interface device */
	376	usb_set_intfdata(interface, dev);
	377
	378	/* let the user know what node this device is now attached to */
38c7c036 LP	379	v4l2_info(&dev->v4l2_dev, "device now attached to %s\n",
38c7c036 LP	380	video_device_node_name(dev->video_dev));
9aba42ef JG	381	return 0;
	382
	383	error:
	384	if (dev) {
9aba42ef JG	385	/* this frees allocated memory */
	386	hdpvr_delete(dev);
	387	}
	388	return retval;
	389	}
	390
	391	static void hdpvr_disconnect(struct usb_interface *interface)
	392	{
	393	struct hdpvr_device *dev;
9aba42ef JG	394
	395	dev = usb_get_intfdata(interface);
	396	usb_set_intfdata(interface, NULL);
	397
9aba42ef JG	398	/* prevent more I/O from starting and stop any ongoing */
	399	mutex_lock(&dev->io_mutex);
	400	dev->status = STATUS_DISCONNECTED;
06630aec	401	v4l2_device_disconnect(&dev->v4l2_dev);
9aba42ef JG	402	video_unregister_device(dev->video_dev);
	403	wake_up_interruptible(&dev->wait_data);
	404	wake_up_interruptible(&dev->wait_buffer);
48f98f75	405	mutex_unlock(&dev->io_mutex);
9aba42ef JG	406	msleep(100);
9aba42ef JG	407	flush_workqueue(dev->workqueue);
48f98f75	408	mutex_lock(&dev->io_mutex);
9aba42ef JG	409	hdpvr_cancel_queue(dev);
	410	destroy_workqueue(dev->workqueue);
	411	mutex_unlock(&dev->io_mutex);
	412
	413	/* deregister I2C adapter */
c457377a	414	#ifdef CONFIG_I2C
9aba42ef JG	415	mutex_lock(&dev->i2c_mutex);
	416	if (dev->i2c_adapter)
	417	i2c_del_adapter(dev->i2c_adapter);
	418	kfree(dev->i2c_adapter);
	419	dev->i2c_adapter = NULL;
	420	mutex_unlock(&dev->i2c_mutex);
c457377a	421	#endif /* CONFIG_I2C */
9aba42ef JG	422
	423	atomic_dec(&dev_nr);
	424
38c7c036 LP	425	v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
38c7c036 LP	426	video_device_node_name(dev->video_dev));
9aba42ef	427
06630aec	428	v4l2_device_unregister(&dev->v4l2_dev);
9aba42ef JG	429	kfree(dev->usbc_buf);
	430	kfree(dev);
	431	}
	432
	433
	434	static struct usb_driver hdpvr_usb_driver = {
	435	.name = "hdpvr",
	436	.probe = hdpvr_probe,
	437	.disconnect = hdpvr_disconnect,
	438	.id_table = hdpvr_table,
	439	};
	440
	441	static int __init hdpvr_init(void)
	442	{
	443	int result;
	444
	445	/* register this driver with the USB subsystem */
	446	result = usb_register(&hdpvr_usb_driver);
	447	if (result)
	448	err("usb_register failed. Error number %d", result);
	449
	450	return result;
	451	}
	452
	453	static void __exit hdpvr_exit(void)
	454	{
	455	/* deregister this driver with the USB subsystem */
	456	usb_deregister(&hdpvr_usb_driver);
	457	}
	458
	459	module_init(hdpvr_init);
	460	module_exit(hdpvr_exit);
	461
	462	MODULE_LICENSE("GPL");
	463	MODULE_AUTHOR("Janne Grunau");
	464	MODULE_DESCRIPTION("Hauppauge HD PVR driver");