[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");

static 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");

static 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) },
	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID3) },
	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID4) },
	{ }					/* 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,
				   5*buf_size+1, 0);
		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
			 "Status request returned, len %d: %s\n",
			 ret, print_buf);
	}
#endif

	v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n",
			  dev->usbc_buf[1], &dev->usbc_buf[2]);

	switch (dev->usbc_buf[1]) {
	case HDPVR_FIRMWARE_VERSION:
		dev->flags &= ~HDPVR_FLAG_AC3_CAP;
		break;
	case HDPVR_FIRMWARE_VERSION_AC3:
	case HDPVR_FIRMWARE_VERSION_0X12:
	case HDPVR_FIRMWARE_VERSION_0X15:
		dev->flags |= HDPVR_FLAG_AC3_CAP;
		break;
	default:
		v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might"
			  " not work.\n");
		if (dev->usbc_buf[1] >= HDPVR_FIRMWARE_VERSION_AC3)
			dev->flags |= HDPVR_FLAG_AC3_CAP;
		else
			dev->flags &= ~HDPVR_FLAG_AC3_CAP;
	}

	response = dev->usbc_buf+38;
#ifdef HDPVR_DEBUG
	hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 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, 5*buf_size+1, 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;
	}

	dev->workqueue = 0;

	/* 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;
		if (default_audio_input == HDPVR_SPDIF)
			dev->options.audio_codec =
				V4L2_MPEG_AUDIO_ENCODING_AC3;
	}

	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 */

	/* 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) {
		/* Destroy single thread */
		if (dev->workqueue)
			destroy_workqueue(dev->workqueue);
		/* this frees allocated memory */
		hdpvr_delete(dev);
	}
	return retval;
}

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

	v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
		  video_device_node_name(dev->video_dev));
	/* prevent more I/O from starting and stop any ongoing */
	mutex_lock(&dev->io_mutex);
	dev->status = STATUS_DISCONNECTED;
	wake_up_interruptible(&dev->wait_data);
	wake_up_interruptible(&dev->wait_buffer);
	mutex_unlock(&dev->io_mutex);
	v4l2_device_disconnect(&dev->v4l2_dev);
	msleep(100);
	flush_workqueue(dev->workqueue);
	mutex_lock(&dev->io_mutex);
	hdpvr_cancel_queue(dev);
	mutex_unlock(&dev->io_mutex);
	video_unregister_device(dev->video_dev);
	atomic_dec(&dev_nr);
}


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
b38aa09d	42	static uint default_video_input = HDPVR_VIDEO_INPUTS;
9aba42ef JG	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
b38aa09d	47	static uint default_audio_input = HDPVR_AUDIO_INPUTS;
9aba42ef JG	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) },
c22425ff	62	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID3) },
e902a68b	63	{ USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID4) },
9aba42ef JG	64	{ } /* Terminating entry */
	65	};
	66	MODULE_DEVICE_TABLE(usb, hdpvr_table);
	67
	68
	69	void hdpvr_delete(struct hdpvr_device *dev)
	70	{
	71	hdpvr_free_buffers(dev);
	72
	73	if (dev->video_dev)
	74	video_device_release(dev->video_dev);
	75
	76	usb_put_dev(dev->udev);
	77	}
	78
	79	static void challenge(u8 *bytes)
	80	{
	81	u64 *i64P, tmp64;
	82	uint i, idx;
	83
	84	for (idx = 0; idx < 32; ++idx) {
	85
	86	if (idx & 0x3)
	87	bytes[(idx >> 3) + 3] = bytes[(idx >> 2) & 0x3];
	88
	89	switch (idx & 0x3) {
	90	case 0x3:
	91	bytes[2] += bytes[3] * 4 + bytes[4] + bytes[5];
	92	bytes[4] += bytes[(idx & 0x1) * 2] * 9 + 9;
	93	break;
	94	case 0x1:
	95	bytes[0] *= 8;
	96	bytes[0] += 7*idx + 4;
	97	bytes[6] += bytes[3] * 3;
	98	break;
	99	case 0x0:
	100	bytes[3 - (idx >> 3)] = bytes[idx >> 2];
	101	bytes[5] += bytes[6] * 3;
	102	for (i = 0; i < 3; i++)
	103	bytes[3] *= bytes[3] + 1;
	104	break;
	105	case 0x2:
	106	for (i = 0; i < 3; i++)
	107	bytes[1] *= bytes[6] + 1;
	108	for (i = 0; i < 3; i++) {
	109	i64P = (u64 *)bytes;
	110	tmp64 = le64_to_cpup(i64P);
	111	tmp64 <<= bytes[7] & 0x0f;
	112	*i64P += cpu_to_le64(tmp64);
	113	}
	114	break;
	115	}
	116	}
	117	}
	118
	119	/* try to init the device like the windows driver */
	120	static int device_authorization(struct hdpvr_device *dev)
	121	{
	122
	123	int ret, retval = -ENOMEM;
	124	char request_type = 0x38, rcv_request = 0x81;
	125	char *response;
	126	#ifdef HDPVR_DEBUG
	127	size_t buf_size = 46;
128	char print_buf = kzalloc(5buf_size+1, GFP_KERNEL);
129	if (!print_buf) {
9ef77adf	130	v4l2_err(&dev->v4l2_dev, "Out of memory\n");
00c1e216	131	return retval;
9aba42ef JG	132	}
	133	#endif
	134
	135	mutex_lock(&dev->usbc_mutex);
	136	ret = usb_control_msg(dev->udev,
	137	usb_rcvctrlpipe(dev->udev, 0),
	138	rcv_request, 0x80 \| request_type,
	139	0x0400, 0x0003,
	140	dev->usbc_buf, 46,
	141	10000);
	142	if (ret != 46) {
9ef77adf JG	143	v4l2_err(&dev->v4l2_dev,
9ef77adf JG	144	"unexpected answer of status request, len %d\n", ret);
00c1e216	145	goto unlock;
9aba42ef JG	146	}
	147	#ifdef HDPVR_DEBUG
	148	else {
	149	hex_dump_to_buffer(dev->usbc_buf, 46, 16, 1, print_buf,
9518f179	150	5*buf_size+1, 0);
9ef77adf JG	151	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
	152	"Status request returned, len %d: %s\n",
	153	ret, print_buf);
9aba42ef JG	154	}
9aba42ef JG	155	#endif
74a558b1 AY	156
	157	v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n",
	158	dev->usbc_buf[1], &dev->usbc_buf[2]);
	159
35b53664 JG	160	switch (dev->usbc_buf[1]) {
35b53664 JG	161	case HDPVR_FIRMWARE_VERSION:
9aba42ef	162	dev->flags &= ~HDPVR_FLAG_AC3_CAP;
35b53664 JG	163	break;
	164	case HDPVR_FIRMWARE_VERSION_AC3:
	165	case HDPVR_FIRMWARE_VERSION_0X12:
	166	case HDPVR_FIRMWARE_VERSION_0X15:
9aba42ef	167	dev->flags \|= HDPVR_FLAG_AC3_CAP;
35b53664 JG	168	break;
	169	default:
	170	v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might"
	171	" not work.\n");
	172	if (dev->usbc_buf[1] >= HDPVR_FIRMWARE_VERSION_AC3)
	173	dev->flags \|= HDPVR_FLAG_AC3_CAP;
	174	else
	175	dev->flags &= ~HDPVR_FLAG_AC3_CAP;
9aba42ef JG	176	}
	177
	178	response = dev->usbc_buf+38;
	179	#ifdef HDPVR_DEBUG
9518f179	180	hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 0);
9ef77adf JG	181	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %s\n",
9ef77adf JG	182	print_buf);
9aba42ef JG	183	#endif
	184	challenge(response);
	185	#ifdef HDPVR_DEBUG
9518f179	186	hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 0);
9ef77adf JG	187	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %s\n",
9ef77adf JG	188	print_buf);
9aba42ef JG	189	#endif
	190
	191	msleep(100);
	192	ret = usb_control_msg(dev->udev,
	193	usb_sndctrlpipe(dev->udev, 0),
	194	0xd1, 0x00 \| request_type,
	195	0x0000, 0x0000,
	196	response, 8,
	197	10000);
9ef77adf JG	198	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	199	"magic request returned %d\n", ret);
9aba42ef JG	200
9aba42ef JG	201	retval = ret != 8;
00c1e216 JS	202	unlock:
00c1e216 JS	203	mutex_unlock(&dev->usbc_mutex);
9aba42ef JG	204	return retval;
	205	}
	206
	207	static int hdpvr_device_init(struct hdpvr_device *dev)
	208	{
	209	int ret;
	210	u8 *buf;
	211	struct hdpvr_video_info *vidinf;
	212
	213	if (device_authorization(dev))
	214	return -EACCES;
	215
	216	/* default options for init */
	217	hdpvr_set_options(dev);
	218
	219	/* set filter options */
	220	mutex_lock(&dev->usbc_mutex);
	221	buf = dev->usbc_buf;
	222	buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00;
	223	ret = usb_control_msg(dev->udev,
	224	usb_sndctrlpipe(dev->udev, 0),
	225	0x01, 0x38,
	226	CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX,
	227	buf, 4,
	228	1000);
9ef77adf JG	229	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	230	"control request returned %d\n", ret);
9aba42ef JG	231	mutex_unlock(&dev->usbc_mutex);
	232
	233	vidinf = get_video_info(dev);
	234	if (!vidinf)
9ef77adf	235	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9aba42ef JG	236	"no valid video signal or device init failed\n");
	237	else
	238	kfree(vidinf);
	239
	240	/* enable fan and bling leds */
	241	mutex_lock(&dev->usbc_mutex);
	242	buf[0] = 0x1;
	243	ret = usb_control_msg(dev->udev,
	244	usb_sndctrlpipe(dev->udev, 0),
	245	0xd4, 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
	250	/* boost analog audio */
	251	buf[0] = boost_audio;
	252	ret = usb_control_msg(dev->udev,
	253	usb_sndctrlpipe(dev->udev, 0),
	254	0xd5, 0x38, 0, 0, buf, 1,
	255	1000);
9ef77adf JG	256	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	257	"control request returned %d\n", ret);
9aba42ef JG	258	mutex_unlock(&dev->usbc_mutex);
	259
	260	dev->status = STATUS_IDLE;
	261	return 0;
	262	}
	263
	264	static const struct hdpvr_options hdpvr_default_options = {
	265	.video_std = HDPVR_60HZ,
	266	.video_input = HDPVR_COMPONENT,
	267	.audio_input = HDPVR_RCA_BACK,
	268	.bitrate = 65, /* 6 mbps */
	269	.peak_bitrate = 90, /* 9 mbps */
	270	.bitrate_mode = HDPVR_CONSTANT,
	271	.gop_mode = HDPVR_SIMPLE_IDR_GOP,
	272	.audio_codec = V4L2_MPEG_AUDIO_ENCODING_AAC,
	273	.brightness = 0x86,
	274	.contrast = 0x80,
	275	.hue = 0x80,
	276	.saturation = 0x80,
	277	.sharpness = 0x80,
	278	};
	279
	280	static int hdpvr_probe(struct usb_interface *interface,
	281	const struct usb_device_id *id)
	282	{
	283	struct hdpvr_device *dev;
	284	struct usb_host_interface *iface_desc;
	285	struct usb_endpoint_descriptor *endpoint;
	286	size_t buffer_size;
	287	int i;
	288	int retval = -ENOMEM;
	289
	290	/* allocate memory for our device state and initialize it */
	291	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	292	if (!dev) {
	293	err("Out of memory");
	294	goto error;
	295	}
06630aec	296
07204aea PA	297	dev->workqueue = 0;
07204aea PA	298
06630aec JG	299	/* register v4l2_device early so it can be used for printks */
	300	if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
	301	err("v4l2_device_register failed");
	302	goto error;
	303	}
	304
9aba42ef JG	305	mutex_init(&dev->io_mutex);
	306	mutex_init(&dev->i2c_mutex);
	307	mutex_init(&dev->usbc_mutex);
	308	dev->usbc_buf = kmalloc(64, GFP_KERNEL);
	309	if (!dev->usbc_buf) {
9ef77adf	310	v4l2_err(&dev->v4l2_dev, "Out of memory\n");
9aba42ef JG	311	goto error;
	312	}
	313
	314	init_waitqueue_head(&dev->wait_buffer);
	315	init_waitqueue_head(&dev->wait_data);
	316
	317	dev->workqueue = create_singlethread_workqueue("hdpvr_buffer");
	318	if (!dev->workqueue)
	319	goto error;
	320
	321	/* init video transfer queues */
	322	INIT_LIST_HEAD(&dev->free_buff_list);
	323	INIT_LIST_HEAD(&dev->rec_buff_list);
	324
	325	dev->options = hdpvr_default_options;
	326
	327	if (default_video_input < HDPVR_VIDEO_INPUTS)
	328	dev->options.video_input = default_video_input;
	329
d4533332	330	if (default_audio_input < HDPVR_AUDIO_INPUTS) {
9aba42ef	331	dev->options.audio_input = default_audio_input;
d4533332 JG	332	if (default_audio_input == HDPVR_SPDIF)
	333	dev->options.audio_codec =
	334	V4L2_MPEG_AUDIO_ENCODING_AC3;
	335	}
9aba42ef JG	336
	337	dev->udev = usb_get_dev(interface_to_usbdev(interface));
	338
	339	/* set up the endpoint information */
	340	/* use only the first bulk-in and bulk-out endpoints */
	341	iface_desc = interface->cur_altsetting;
	342	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
	343	endpoint = &iface_desc->endpoint[i].desc;
	344
	345	if (!dev->bulk_in_endpointAddr &&
	346	usb_endpoint_is_bulk_in(endpoint)) {
	347	/* USB interface description is buggy, reported max
	348	* packet size is 512 bytes, windows driver uses 8192 */
	349	buffer_size = 8192;
	350	dev->bulk_in_size = buffer_size;
	351	dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
	352	}
	353
	354	}
	355	if (!dev->bulk_in_endpointAddr) {
9ef77adf	356	v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
9aba42ef JG	357	goto error;
	358	}
	359
	360	/* init the device */
	361	if (hdpvr_device_init(dev)) {
9ef77adf	362	v4l2_err(&dev->v4l2_dev, "device init failed\n");
9aba42ef JG	363	goto error;
	364	}
	365
	366	mutex_lock(&dev->io_mutex);
	367	if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
00c1e216	368	mutex_unlock(&dev->io_mutex);
9ef77adf JG	369	v4l2_err(&dev->v4l2_dev,
9ef77adf JG	370	"allocating transfer buffers failed\n");
9aba42ef JG	371	goto error;
	372	}
	373	mutex_unlock(&dev->io_mutex);
	374
a50ab291	375	if (hdpvr_register_videodev(dev, &interface->dev,
9aba42ef	376	video_nr[atomic_inc_return(&dev_nr)])) {
9ef77adf	377	v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
9aba42ef JG	378	goto error;
	379	}
	380
c457377a JG	381	#ifdef CONFIG_I2C
	382	/* until i2c is working properly */
	383	retval = 0; /* hdpvr_register_i2c_adapter(dev); */
	384	if (retval < 0) {
9ef77adf	385	v4l2_err(&dev->v4l2_dev, "registering i2c adapter failed\n");
c457377a JG	386	goto error;
	387	}
	388	#endif /* CONFIG_I2C */
9aba42ef	389
9aba42ef	390	/* let the user know what node this device is now attached to */
38c7c036 LP	391	v4l2_info(&dev->v4l2_dev, "device now attached to %s\n",
38c7c036 LP	392	video_device_node_name(dev->video_dev));
9aba42ef JG	393	return 0;
	394
	395	error:
	396	if (dev) {
07204aea PA	397	/* Destroy single thread */
	398	if (dev->workqueue)
	399	destroy_workqueue(dev->workqueue);
9aba42ef JG	400	/* this frees allocated memory */
	401	hdpvr_delete(dev);
	402	}
	403	return retval;
	404	}
	405
	406	static void hdpvr_disconnect(struct usb_interface *interface)
	407	{
f2b305cd	408	struct hdpvr_device *dev = to_hdpvr_dev(usb_get_intfdata(interface));
9aba42ef	409
f2b305cd HV	410	v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
f2b305cd HV	411	video_device_node_name(dev->video_dev));
9aba42ef JG	412	/* prevent more I/O from starting and stop any ongoing */
	413	mutex_lock(&dev->io_mutex);
	414	dev->status = STATUS_DISCONNECTED;
9aba42ef JG	415	wake_up_interruptible(&dev->wait_data);
9aba42ef JG	416	wake_up_interruptible(&dev->wait_buffer);
48f98f75	417	mutex_unlock(&dev->io_mutex);
f2b305cd	418	v4l2_device_disconnect(&dev->v4l2_dev);
9aba42ef JG	419	msleep(100);
9aba42ef JG	420	flush_workqueue(dev->workqueue);
48f98f75	421	mutex_lock(&dev->io_mutex);
9aba42ef	422	hdpvr_cancel_queue(dev);
9aba42ef	423	mutex_unlock(&dev->io_mutex);
f2b305cd	424	video_unregister_device(dev->video_dev);
9aba42ef	425	atomic_dec(&dev_nr);
9aba42ef JG	426	}
	427
	428
	429	static struct usb_driver hdpvr_usb_driver = {
	430	.name = "hdpvr",
	431	.probe = hdpvr_probe,
	432	.disconnect = hdpvr_disconnect,
	433	.id_table = hdpvr_table,
	434	};
	435
	436	static int __init hdpvr_init(void)
	437	{
	438	int result;
	439
	440	/* register this driver with the USB subsystem */
	441	result = usb_register(&hdpvr_usb_driver);
	442	if (result)
	443	err("usb_register failed. Error number %d", result);
	444
	445	return result;
	446	}
	447
	448	static void __exit hdpvr_exit(void)
	449	{
	450	/* deregister this driver with the USB subsystem */
	451	usb_deregister(&hdpvr_usb_driver);
	452	}
	453
	454	module_init(hdpvr_init);
	455	module_exit(hdpvr_exit);
	456
	457	MODULE_LICENSE("GPL");
	458	MODULE_AUTHOR("Janne Grunau");
	459	MODULE_DESCRIPTION("Hauppauge HD PVR driver");