[deliverable/linux.git] / drivers / media / usb / 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 <linux/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 bool 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)
{
	__le64 *i64P;
	u64 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 = (__le64 *)bytes;
				tmp64 = le64_to_cpup(i64P);
				tmp64 = tmp64 + (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

	dev->fw_ver = dev->usbc_buf[1];

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

	if (dev->fw_ver > 0x15) {
		dev->options.brightness	= 0x80;
		dev->options.contrast	= 0x40;
		dev->options.hue	= 0xf;
		dev->options.saturation	= 0x40;
		dev->options.sharpness	= 0x80;
	}

	switch (dev->fw_ver) {
	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:
	case HDPVR_FIRMWARE_VERSION_0X1E:
		dev->flags |= HDPVR_FLAG_AC3_CAP;
		break;
	default:
		v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might"
			  " not work.\n");
		if (dev->fw_ver >= 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);
#ifdef HDPVR_DEBUG
	kfree(print_buf);
#endif
	return retval;
}

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

	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);

	/* 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,
	/* original picture controls for firmware version <= 0x15 */
	/* updated in device_authorization() for newer firmware */
	.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;
	struct i2c_client *client;
	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) {
		dev_err(&interface->dev, "Out of memory\n");
		goto error;
	}

	/* init video transfer queues first of all */
	/* to prevent oops in hdpvr_delete() on error paths */
	INIT_LIST_HEAD(&dev->free_buff_list);
	INIT_LIST_HEAD(&dev->rec_buff_list);

	/* register v4l2_device early so it can be used for printks */
	if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
		dev_err(&interface->dev, "v4l2_device_register failed\n");
		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;

	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 IS_ENABLED(CONFIG_I2C)
	retval = hdpvr_register_i2c_adapter(dev);
	if (retval < 0) {
		v4l2_err(&dev->v4l2_dev, "i2c adapter register failed\n");
		goto error;
	}

	client = hdpvr_register_ir_rx_i2c(dev);
	if (!client) {
		v4l2_err(&dev->v4l2_dev, "i2c IR RX device register failed\n");
		retval = -ENODEV;
		goto reg_fail;
	}

	client = hdpvr_register_ir_tx_i2c(dev);
	if (!client) {
		v4l2_err(&dev->v4l2_dev, "i2c IR TX device register failed\n");
		retval = -ENODEV;
		goto reg_fail;
	}
#endif

	retval = hdpvr_register_videodev(dev, &interface->dev,
				    video_nr[atomic_inc_return(&dev_nr)]);
	if (retval < 0) {
		v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
		goto reg_fail;
	}

	/* 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;

reg_fail:
#if IS_ENABLED(CONFIG_I2C)
	i2c_del_adapter(&dev->i2c_adapter);
#endif
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);
#if IS_ENABLED(CONFIG_I2C)
	i2c_del_adapter(&dev->i2c_adapter);
#endif
	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,
};

module_usb_driver(hdpvr_usb_driver);

MODULE_LICENSE("GPL");
MODULE_VERSION("0.2.1");
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>
60063497	20	#include <linux/atomic.h>
9aba42ef JG	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
90ab5ee9	52	static bool boost_audio;
9aba42ef JG	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	{
c8e479c4 HV	81	__le64 *i64P;
c8e479c4 HV	82	u64 tmp64;
9aba42ef JG	83	uint i, idx;
	84
	85	for (idx = 0; idx < 32; ++idx) {
	86
	87	if (idx & 0x3)
	88	bytes[(idx >> 3) + 3] = bytes[(idx >> 2) & 0x3];
	89
	90	switch (idx & 0x3) {
	91	case 0x3:
	92	bytes[2] += bytes[3] * 4 + bytes[4] + bytes[5];
	93	bytes[4] += bytes[(idx & 0x1) * 2] * 9 + 9;
	94	break;
	95	case 0x1:
	96	bytes[0] *= 8;
	97	bytes[0] += 7*idx + 4;
	98	bytes[6] += bytes[3] * 3;
	99	break;
	100	case 0x0:
	101	bytes[3 - (idx >> 3)] = bytes[idx >> 2];
	102	bytes[5] += bytes[6] * 3;
	103	for (i = 0; i < 3; i++)
	104	bytes[3] *= bytes[3] + 1;
	105	break;
	106	case 0x2:
	107	for (i = 0; i < 3; i++)
	108	bytes[1] *= bytes[6] + 1;
	109	for (i = 0; i < 3; i++) {
c8e479c4	110	i64P = (__le64 *)bytes;
9aba42ef	111	tmp64 = le64_to_cpup(i64P);
c8e479c4 HV	112	tmp64 = tmp64 + (tmp64 << (bytes[7] & 0x0f));
c8e479c4 HV	113	*i64P = cpu_to_le64(tmp64);
9aba42ef JG	114	}
	115	break;
	116	}
	117	}
	118	}
	119
	120	/* try to init the device like the windows driver */
	121	static int device_authorization(struct hdpvr_device *dev)
	122	{
	123
	124	int ret, retval = -ENOMEM;
	125	char request_type = 0x38, rcv_request = 0x81;
	126	char *response;
	127	#ifdef HDPVR_DEBUG
	128	size_t buf_size = 46;
	129	char print_buf = kzalloc(5buf_size+1, GFP_KERNEL);
	130	if (!print_buf) {
9ef77adf	131	v4l2_err(&dev->v4l2_dev, "Out of memory\n");
00c1e216	132	return retval;
9aba42ef JG	133	}
	134	#endif
	135
	136	mutex_lock(&dev->usbc_mutex);
	137	ret = usb_control_msg(dev->udev,
	138	usb_rcvctrlpipe(dev->udev, 0),
	139	rcv_request, 0x80 \| request_type,
	140	0x0400, 0x0003,
	141	dev->usbc_buf, 46,
	142	10000);
	143	if (ret != 46) {
9ef77adf JG	144	v4l2_err(&dev->v4l2_dev,
9ef77adf JG	145	"unexpected answer of status request, len %d\n", ret);
00c1e216	146	goto unlock;
9aba42ef JG	147	}
	148	#ifdef HDPVR_DEBUG
	149	else {
	150	hex_dump_to_buffer(dev->usbc_buf, 46, 16, 1, print_buf,
9518f179	151	5*buf_size+1, 0);
9ef77adf JG	152	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
	153	"Status request returned, len %d: %s\n",
	154	ret, print_buf);
9aba42ef JG	155	}
9aba42ef JG	156	#endif
74a558b1	157
fda27874 TR	158	dev->fw_ver = dev->usbc_buf[1];
fda27874 TR	159
74a558b1	160	v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n",
fda27874 TR	161	dev->fw_ver, &dev->usbc_buf[2]);
	162
	163	if (dev->fw_ver > 0x15) {
	164	dev->options.brightness = 0x80;
	165	dev->options.contrast = 0x40;
	166	dev->options.hue = 0xf;
	167	dev->options.saturation = 0x40;
	168	dev->options.sharpness = 0x80;
	169	}
74a558b1	170
fda27874	171	switch (dev->fw_ver) {
35b53664	172	case HDPVR_FIRMWARE_VERSION:
9aba42ef	173	dev->flags &= ~HDPVR_FLAG_AC3_CAP;
35b53664 JG	174	break;
	175	case HDPVR_FIRMWARE_VERSION_AC3:
	176	case HDPVR_FIRMWARE_VERSION_0X12:
	177	case HDPVR_FIRMWARE_VERSION_0X15:
c7a2c84a	178	case HDPVR_FIRMWARE_VERSION_0X1E:
9aba42ef	179	dev->flags \|= HDPVR_FLAG_AC3_CAP;
35b53664 JG	180	break;
	181	default:
	182	v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might"
	183	" not work.\n");
fda27874	184	if (dev->fw_ver >= HDPVR_FIRMWARE_VERSION_AC3)
35b53664 JG	185	dev->flags \|= HDPVR_FLAG_AC3_CAP;
	186	else
	187	dev->flags &= ~HDPVR_FLAG_AC3_CAP;
9aba42ef JG	188	}
	189
	190	response = dev->usbc_buf+38;
	191	#ifdef HDPVR_DEBUG
9518f179	192	hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 0);
9ef77adf JG	193	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %s\n",
9ef77adf JG	194	print_buf);
9aba42ef JG	195	#endif
	196	challenge(response);
	197	#ifdef HDPVR_DEBUG
9518f179	198	hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 0);
9ef77adf JG	199	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %s\n",
9ef77adf JG	200	print_buf);
9aba42ef JG	201	#endif
	202
	203	msleep(100);
	204	ret = usb_control_msg(dev->udev,
	205	usb_sndctrlpipe(dev->udev, 0),
	206	0xd1, 0x00 \| request_type,
	207	0x0000, 0x0000,
	208	response, 8,
	209	10000);
9ef77adf JG	210	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	211	"magic request returned %d\n", ret);
9aba42ef JG	212
9aba42ef JG	213	retval = ret != 8;
00c1e216 JS	214	unlock:
00c1e216 JS	215	mutex_unlock(&dev->usbc_mutex);
1ba6c901 MI	216	#ifdef HDPVR_DEBUG
	217	kfree(print_buf);
	218	#endif
9aba42ef JG	219	return retval;
	220	}
	221
	222	static int hdpvr_device_init(struct hdpvr_device *dev)
	223	{
	224	int ret;
	225	u8 *buf;
9aba42ef JG	226
	227	if (device_authorization(dev))
	228	return -EACCES;
	229
	230	/* default options for init */
	231	hdpvr_set_options(dev);
	232
	233	/* set filter options */
	234	mutex_lock(&dev->usbc_mutex);
	235	buf = dev->usbc_buf;
	236	buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00;
	237	ret = usb_control_msg(dev->udev,
	238	usb_sndctrlpipe(dev->udev, 0),
	239	0x01, 0x38,
	240	CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX,
	241	buf, 4,
	242	1000);
9ef77adf JG	243	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	244	"control request returned %d\n", ret);
9aba42ef JG	245	mutex_unlock(&dev->usbc_mutex);
9aba42ef JG	246
9aba42ef JG	247	/* enable fan and bling leds */
	248	mutex_lock(&dev->usbc_mutex);
	249	buf[0] = 0x1;
	250	ret = usb_control_msg(dev->udev,
	251	usb_sndctrlpipe(dev->udev, 0),
	252	0xd4, 0x38, 0, 0, buf, 1,
	253	1000);
9ef77adf JG	254	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	255	"control request returned %d\n", ret);
9aba42ef JG	256
	257	/* boost analog audio */
	258	buf[0] = boost_audio;
	259	ret = usb_control_msg(dev->udev,
	260	usb_sndctrlpipe(dev->udev, 0),
	261	0xd5, 0x38, 0, 0, buf, 1,
	262	1000);
9ef77adf JG	263	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
9ef77adf JG	264	"control request returned %d\n", ret);
9aba42ef JG	265	mutex_unlock(&dev->usbc_mutex);
	266
	267	dev->status = STATUS_IDLE;
	268	return 0;
	269	}
	270
	271	static const struct hdpvr_options hdpvr_default_options = {
	272	.video_std = HDPVR_60HZ,
	273	.video_input = HDPVR_COMPONENT,
	274	.audio_input = HDPVR_RCA_BACK,
	275	.bitrate = 65, /* 6 mbps */
	276	.peak_bitrate = 90, /* 9 mbps */
	277	.bitrate_mode = HDPVR_CONSTANT,
	278	.gop_mode = HDPVR_SIMPLE_IDR_GOP,
	279	.audio_codec = V4L2_MPEG_AUDIO_ENCODING_AAC,
fda27874 TR	280	/* original picture controls for firmware version <= 0x15 */
fda27874 TR	281	/* updated in device_authorization() for newer firmware */
9aba42ef JG	282	.brightness = 0x86,
	283	.contrast = 0x80,
	284	.hue = 0x80,
	285	.saturation = 0x80,
	286	.sharpness = 0x80,
	287	};
	288
	289	static int hdpvr_probe(struct usb_interface *interface,
	290	const struct usb_device_id *id)
	291	{
	292	struct hdpvr_device *dev;
	293	struct usb_host_interface *iface_desc;
	294	struct usb_endpoint_descriptor *endpoint;
7f2a06de	295	struct i2c_client *client;
9aba42ef JG	296	size_t buffer_size;
	297	int i;
	298	int retval = -ENOMEM;
	299
	300	/* allocate memory for our device state and initialize it */
	301	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	302	if (!dev) {
d372c419	303	dev_err(&interface->dev, "Out of memory\n");
9aba42ef JG	304	goto error;
9aba42ef JG	305	}
06630aec	306
2e923a05 AK	307	/* init video transfer queues first of all */
	308	/* to prevent oops in hdpvr_delete() on error paths */
	309	INIT_LIST_HEAD(&dev->free_buff_list);
	310	INIT_LIST_HEAD(&dev->rec_buff_list);
	311
06630aec JG	312	/* register v4l2_device early so it can be used for printks */
06630aec JG	313	if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
d372c419	314	dev_err(&interface->dev, "v4l2_device_register failed\n");
06630aec JG	315	goto error;
	316	}
	317
9aba42ef JG	318	mutex_init(&dev->io_mutex);
	319	mutex_init(&dev->i2c_mutex);
	320	mutex_init(&dev->usbc_mutex);
	321	dev->usbc_buf = kmalloc(64, GFP_KERNEL);
	322	if (!dev->usbc_buf) {
9ef77adf	323	v4l2_err(&dev->v4l2_dev, "Out of memory\n");
9aba42ef JG	324	goto error;
	325	}
	326
	327	init_waitqueue_head(&dev->wait_buffer);
	328	init_waitqueue_head(&dev->wait_data);
	329
	330	dev->workqueue = create_singlethread_workqueue("hdpvr_buffer");
	331	if (!dev->workqueue)
	332	goto error;
	333
9aba42ef JG	334	dev->options = hdpvr_default_options;
	335
	336	if (default_video_input < HDPVR_VIDEO_INPUTS)
	337	dev->options.video_input = default_video_input;
	338
d4533332	339	if (default_audio_input < HDPVR_AUDIO_INPUTS) {
9aba42ef	340	dev->options.audio_input = default_audio_input;
d4533332 JG	341	if (default_audio_input == HDPVR_SPDIF)
	342	dev->options.audio_codec =
	343	V4L2_MPEG_AUDIO_ENCODING_AC3;
	344	}
9aba42ef JG	345
	346	dev->udev = usb_get_dev(interface_to_usbdev(interface));
	347
	348	/* set up the endpoint information */
	349	/* use only the first bulk-in and bulk-out endpoints */
	350	iface_desc = interface->cur_altsetting;
	351	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
	352	endpoint = &iface_desc->endpoint[i].desc;
	353
	354	if (!dev->bulk_in_endpointAddr &&
	355	usb_endpoint_is_bulk_in(endpoint)) {
	356	/* USB interface description is buggy, reported max
	357	* packet size is 512 bytes, windows driver uses 8192 */
	358	buffer_size = 8192;
	359	dev->bulk_in_size = buffer_size;
	360	dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
	361	}
	362
	363	}
	364	if (!dev->bulk_in_endpointAddr) {
9ef77adf	365	v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
9aba42ef JG	366	goto error;
	367	}
	368
	369	/* init the device */
	370	if (hdpvr_device_init(dev)) {
9ef77adf	371	v4l2_err(&dev->v4l2_dev, "device init failed\n");
9aba42ef JG	372	goto error;
	373	}
	374
	375	mutex_lock(&dev->io_mutex);
	376	if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
00c1e216	377	mutex_unlock(&dev->io_mutex);
9ef77adf JG	378	v4l2_err(&dev->v4l2_dev,
9ef77adf JG	379	"allocating transfer buffers failed\n");
9aba42ef JG	380	goto error;
	381	}
	382	mutex_unlock(&dev->io_mutex);
	383
9ecf9b08	384	#if IS_ENABLED(CONFIG_I2C)
324b04ba	385	retval = hdpvr_register_i2c_adapter(dev);
c457377a	386	if (retval < 0) {
7f2a06de	387	v4l2_err(&dev->v4l2_dev, "i2c adapter register failed\n");
c457377a JG	388	goto error;
c457377a JG	389	}
ea6c0603	390
7f2a06de JW	391	client = hdpvr_register_ir_rx_i2c(dev);
	392	if (!client) {
	393	v4l2_err(&dev->v4l2_dev, "i2c IR RX device register failed\n");
304a0807	394	retval = -ENODEV;
7f2a06de JW	395	goto reg_fail;
	396	}
	397
	398	client = hdpvr_register_ir_tx_i2c(dev);
	399	if (!client) {
	400	v4l2_err(&dev->v4l2_dev, "i2c IR TX device register failed\n");
304a0807	401	retval = -ENODEV;
7f2a06de JW	402	goto reg_fail;
7f2a06de JW	403	}
324b04ba	404	#endif
9aba42ef	405
280847b5 HV	406	retval = hdpvr_register_videodev(dev, &interface->dev,
	407	video_nr[atomic_inc_return(&dev_nr)]);
	408	if (retval < 0) {
	409	v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
2e923a05	410	goto reg_fail;
280847b5 HV	411	}
280847b5 HV	412
9aba42ef	413	/* let the user know what node this device is now attached to */
38c7c036 LP	414	v4l2_info(&dev->v4l2_dev, "device now attached to %s\n",
38c7c036 LP	415	video_device_node_name(dev->video_dev));
9aba42ef JG	416	return 0;
9aba42ef JG	417
7f2a06de	418	reg_fail:
9ecf9b08	419	#if IS_ENABLED(CONFIG_I2C)
7f2a06de JW	420	i2c_del_adapter(&dev->i2c_adapter);
7f2a06de JW	421	#endif
9aba42ef JG	422	error:
9aba42ef JG	423	if (dev) {
07204aea PA	424	/* Destroy single thread */
	425	if (dev->workqueue)
	426	destroy_workqueue(dev->workqueue);
9aba42ef JG	427	/* this frees allocated memory */
	428	hdpvr_delete(dev);
	429	}
	430	return retval;
	431	}
	432
	433	static void hdpvr_disconnect(struct usb_interface *interface)
	434	{
f2b305cd	435	struct hdpvr_device *dev = to_hdpvr_dev(usb_get_intfdata(interface));
9aba42ef	436
f2b305cd HV	437	v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
f2b305cd HV	438	video_device_node_name(dev->video_dev));
9aba42ef JG	439	/* prevent more I/O from starting and stop any ongoing */
	440	mutex_lock(&dev->io_mutex);
	441	dev->status = STATUS_DISCONNECTED;
9aba42ef JG	442	wake_up_interruptible(&dev->wait_data);
9aba42ef JG	443	wake_up_interruptible(&dev->wait_buffer);
48f98f75	444	mutex_unlock(&dev->io_mutex);
f2b305cd	445	v4l2_device_disconnect(&dev->v4l2_dev);
9aba42ef JG	446	msleep(100);
9aba42ef JG	447	flush_workqueue(dev->workqueue);
48f98f75	448	mutex_lock(&dev->io_mutex);
9aba42ef	449	hdpvr_cancel_queue(dev);
9aba42ef	450	mutex_unlock(&dev->io_mutex);
9ecf9b08	451	#if IS_ENABLED(CONFIG_I2C)
7f2a06de JW	452	i2c_del_adapter(&dev->i2c_adapter);
7f2a06de JW	453	#endif
f2b305cd	454	video_unregister_device(dev->video_dev);
9aba42ef	455	atomic_dec(&dev_nr);
9aba42ef JG	456	}
	457
	458
	459	static struct usb_driver hdpvr_usb_driver = {
	460	.name = "hdpvr",
	461	.probe = hdpvr_probe,
	462	.disconnect = hdpvr_disconnect,
	463	.id_table = hdpvr_table,
	464	};
	465
ecb3b2b3	466	module_usb_driver(hdpvr_usb_driver);
9aba42ef JG	467
9aba42ef JG	468	MODULE_LICENSE("GPL");
1990d50b	469	MODULE_VERSION("0.2.1");
9aba42ef JG	470	MODULE_AUTHOR("Janne Grunau");
9aba42ef JG	471	MODULE_DESCRIPTION("Hauppauge HD PVR driver");