1 /* 2 * Hauppauge HD PVR USB driver 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 <linux/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 static 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 static 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 bool 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 { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID3) }, 63 { USB_DEVICE(HD_PVR_VENDOR_ID, HD_PVR_PRODUCT_ID4) }, 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 usb_put_dev(dev->udev); 73 } 74 75 static void challenge(u8 *bytes) 76 { 77 __le64 *i64P; 78 u64 tmp64; 79 uint i, idx; 80 81 for (idx = 0; idx < 32; ++idx) { 82 83 if (idx & 0x3) 84 bytes[(idx >> 3) + 3] = bytes[(idx >> 2) & 0x3]; 85 86 switch (idx & 0x3) { 87 case 0x3: 88 bytes[2] += bytes[3] * 4 + bytes[4] + bytes[5]; 89 bytes[4] += bytes[(idx & 0x1) * 2] * 9 + 9; 90 break; 91 case 0x1: 92 bytes[0] *= 8; 93 bytes[0] += 7*idx + 4; 94 bytes[6] += bytes[3] * 3; 95 break; 96 case 0x0: 97 bytes[3 - (idx >> 3)] = bytes[idx >> 2]; 98 bytes[5] += bytes[6] * 3; 99 for (i = 0; i < 3; i++) 100 bytes[3] *= bytes[3] + 1; 101 break; 102 case 0x2: 103 for (i = 0; i < 3; i++) 104 bytes[1] *= bytes[6] + 1; 105 for (i = 0; i < 3; i++) { 106 i64P = (__le64 *)bytes; 107 tmp64 = le64_to_cpup(i64P); 108 tmp64 = tmp64 + (tmp64 << (bytes[7] & 0x0f)); 109 *i64P = cpu_to_le64(tmp64); 110 } 111 break; 112 } 113 } 114 } 115 116 /* try to init the device like the windows driver */ 117 static int device_authorization(struct hdpvr_device *dev) 118 { 119 120 int ret, retval = -ENOMEM; 121 char request_type = 0x38, rcv_request = 0x81; 122 char *response; 123 124 mutex_lock(&dev->usbc_mutex); 125 ret = usb_control_msg(dev->udev, 126 usb_rcvctrlpipe(dev->udev, 0), 127 rcv_request, 0x80 | request_type, 128 0x0400, 0x0003, 129 dev->usbc_buf, 46, 130 10000); 131 if (ret != 46) { 132 v4l2_err(&dev->v4l2_dev, 133 "unexpected answer of status request, len %d\n", ret); 134 goto unlock; 135 } 136 #ifdef HDPVR_DEBUG 137 else { 138 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 139 "Status request returned, len %d: %46ph\n", 140 ret, dev->usbc_buf); 141 } 142 #endif 143 144 dev->fw_ver = dev->usbc_buf[1]; 145 146 v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n", 147 dev->fw_ver, &dev->usbc_buf[2]); 148 149 if (dev->fw_ver > 0x15) { 150 dev->options.brightness = 0x80; 151 dev->options.contrast = 0x40; 152 dev->options.hue = 0xf; 153 dev->options.saturation = 0x40; 154 dev->options.sharpness = 0x80; 155 } 156 157 switch (dev->fw_ver) { 158 case HDPVR_FIRMWARE_VERSION: 159 dev->flags &= ~HDPVR_FLAG_AC3_CAP; 160 break; 161 case HDPVR_FIRMWARE_VERSION_AC3: 162 case HDPVR_FIRMWARE_VERSION_0X12: 163 case HDPVR_FIRMWARE_VERSION_0X15: 164 case HDPVR_FIRMWARE_VERSION_0X1E: 165 dev->flags |= HDPVR_FLAG_AC3_CAP; 166 break; 167 default: 168 v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might" 169 " not work.\n"); 170 if (dev->fw_ver >= HDPVR_FIRMWARE_VERSION_AC3) 171 dev->flags |= HDPVR_FLAG_AC3_CAP; 172 else 173 dev->flags &= ~HDPVR_FLAG_AC3_CAP; 174 } 175 176 response = dev->usbc_buf+38; 177 #ifdef HDPVR_DEBUG 178 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %8ph\n", 179 response); 180 #endif 181 challenge(response); 182 #ifdef HDPVR_DEBUG 183 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %8ph\n", 184 response); 185 #endif 186 187 msleep(100); 188 ret = usb_control_msg(dev->udev, 189 usb_sndctrlpipe(dev->udev, 0), 190 0xd1, 0x00 | request_type, 191 0x0000, 0x0000, 192 response, 8, 193 10000); 194 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 195 "magic request returned %d\n", ret); 196 197 retval = ret != 8; 198 unlock: 199 mutex_unlock(&dev->usbc_mutex); 200 return retval; 201 } 202 203 static int hdpvr_device_init(struct hdpvr_device *dev) 204 { 205 int ret; 206 u8 *buf; 207 208 if (device_authorization(dev)) 209 return -EACCES; 210 211 /* default options for init */ 212 hdpvr_set_options(dev); 213 214 /* set filter options */ 215 mutex_lock(&dev->usbc_mutex); 216 buf = dev->usbc_buf; 217 buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00; 218 ret = usb_control_msg(dev->udev, 219 usb_sndctrlpipe(dev->udev, 0), 220 0x01, 0x38, 221 CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX, 222 buf, 4, 223 1000); 224 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 225 "control request returned %d\n", ret); 226 mutex_unlock(&dev->usbc_mutex); 227 228 /* enable fan and bling leds */ 229 mutex_lock(&dev->usbc_mutex); 230 buf[0] = 0x1; 231 ret = usb_control_msg(dev->udev, 232 usb_sndctrlpipe(dev->udev, 0), 233 0xd4, 0x38, 0, 0, buf, 1, 234 1000); 235 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 236 "control request returned %d\n", ret); 237 238 /* boost analog audio */ 239 buf[0] = boost_audio; 240 ret = usb_control_msg(dev->udev, 241 usb_sndctrlpipe(dev->udev, 0), 242 0xd5, 0x38, 0, 0, buf, 1, 243 1000); 244 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 245 "control request returned %d\n", ret); 246 mutex_unlock(&dev->usbc_mutex); 247 248 dev->status = STATUS_IDLE; 249 return 0; 250 } 251 252 static const struct hdpvr_options hdpvr_default_options = { 253 .video_std = HDPVR_60HZ, 254 .video_input = HDPVR_COMPONENT, 255 .audio_input = HDPVR_RCA_BACK, 256 .bitrate = 65, /* 6 mbps */ 257 .peak_bitrate = 90, /* 9 mbps */ 258 .bitrate_mode = HDPVR_CONSTANT, 259 .gop_mode = HDPVR_SIMPLE_IDR_GOP, 260 .audio_codec = V4L2_MPEG_AUDIO_ENCODING_AAC, 261 /* original picture controls for firmware version <= 0x15 */ 262 /* updated in device_authorization() for newer firmware */ 263 .brightness = 0x86, 264 .contrast = 0x80, 265 .hue = 0x80, 266 .saturation = 0x80, 267 .sharpness = 0x80, 268 }; 269 270 static int hdpvr_probe(struct usb_interface *interface, 271 const struct usb_device_id *id) 272 { 273 struct hdpvr_device *dev; 274 struct usb_host_interface *iface_desc; 275 struct usb_endpoint_descriptor *endpoint; 276 struct i2c_client *client; 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 dev_err(&interface->dev, "Out of memory\n"); 285 goto error; 286 } 287 288 /* init video transfer queues first of all */ 289 /* to prevent oops in hdpvr_delete() on error paths */ 290 INIT_LIST_HEAD(&dev->free_buff_list); 291 INIT_LIST_HEAD(&dev->rec_buff_list); 292 293 /* register v4l2_device early so it can be used for printks */ 294 if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) { 295 dev_err(&interface->dev, "v4l2_device_register failed\n"); 296 goto error; 297 } 298 299 mutex_init(&dev->io_mutex); 300 mutex_init(&dev->i2c_mutex); 301 mutex_init(&dev->usbc_mutex); 302 dev->usbc_buf = kmalloc(64, GFP_KERNEL); 303 if (!dev->usbc_buf) { 304 v4l2_err(&dev->v4l2_dev, "Out of memory\n"); 305 goto error; 306 } 307 308 init_waitqueue_head(&dev->wait_buffer); 309 init_waitqueue_head(&dev->wait_data); 310 311 dev->workqueue = create_singlethread_workqueue("hdpvr_buffer"); 312 if (!dev->workqueue) 313 goto error; 314 315 dev->options = hdpvr_default_options; 316 317 if (default_video_input < HDPVR_VIDEO_INPUTS) 318 dev->options.video_input = default_video_input; 319 320 if (default_audio_input < HDPVR_AUDIO_INPUTS) { 321 dev->options.audio_input = default_audio_input; 322 if (default_audio_input == HDPVR_SPDIF) 323 dev->options.audio_codec = 324 V4L2_MPEG_AUDIO_ENCODING_AC3; 325 } 326 327 dev->udev = usb_get_dev(interface_to_usbdev(interface)); 328 329 /* set up the endpoint information */ 330 /* use only the first bulk-in and bulk-out endpoints */ 331 iface_desc = interface->cur_altsetting; 332 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { 333 endpoint = &iface_desc->endpoint[i].desc; 334 335 if (!dev->bulk_in_endpointAddr && 336 usb_endpoint_is_bulk_in(endpoint)) { 337 /* USB interface description is buggy, reported max 338 * packet size is 512 bytes, windows driver uses 8192 */ 339 buffer_size = 8192; 340 dev->bulk_in_size = buffer_size; 341 dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; 342 } 343 344 } 345 if (!dev->bulk_in_endpointAddr) { 346 v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n"); 347 goto error; 348 } 349 350 /* init the device */ 351 if (hdpvr_device_init(dev)) { 352 v4l2_err(&dev->v4l2_dev, "device init failed\n"); 353 goto error; 354 } 355 356 mutex_lock(&dev->io_mutex); 357 if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) { 358 mutex_unlock(&dev->io_mutex); 359 v4l2_err(&dev->v4l2_dev, 360 "allocating transfer buffers failed\n"); 361 goto error; 362 } 363 mutex_unlock(&dev->io_mutex); 364 365 #if IS_ENABLED(CONFIG_I2C) 366 retval = hdpvr_register_i2c_adapter(dev); 367 if (retval < 0) { 368 v4l2_err(&dev->v4l2_dev, "i2c adapter register failed\n"); 369 goto error; 370 } 371 372 client = hdpvr_register_ir_rx_i2c(dev); 373 if (!client) { 374 v4l2_err(&dev->v4l2_dev, "i2c IR RX device register failed\n"); 375 retval = -ENODEV; 376 goto reg_fail; 377 } 378 379 client = hdpvr_register_ir_tx_i2c(dev); 380 if (!client) { 381 v4l2_err(&dev->v4l2_dev, "i2c IR TX device register failed\n"); 382 retval = -ENODEV; 383 goto reg_fail; 384 } 385 #endif 386 387 retval = hdpvr_register_videodev(dev, &interface->dev, 388 video_nr[atomic_inc_return(&dev_nr)]); 389 if (retval < 0) { 390 v4l2_err(&dev->v4l2_dev, "registering videodev failed\n"); 391 goto reg_fail; 392 } 393 394 /* let the user know what node this device is now attached to */ 395 v4l2_info(&dev->v4l2_dev, "device now attached to %s\n", 396 video_device_node_name(&dev->video_dev)); 397 return 0; 398 399 reg_fail: 400 #if IS_ENABLED(CONFIG_I2C) 401 i2c_del_adapter(&dev->i2c_adapter); 402 #endif 403 error: 404 if (dev) { 405 /* Destroy single thread */ 406 if (dev->workqueue) 407 destroy_workqueue(dev->workqueue); 408 /* this frees allocated memory */ 409 hdpvr_delete(dev); 410 } 411 return retval; 412 } 413 414 static void hdpvr_disconnect(struct usb_interface *interface) 415 { 416 struct hdpvr_device *dev = to_hdpvr_dev(usb_get_intfdata(interface)); 417 418 v4l2_info(&dev->v4l2_dev, "device %s disconnected\n", 419 video_device_node_name(&dev->video_dev)); 420 /* prevent more I/O from starting and stop any ongoing */ 421 mutex_lock(&dev->io_mutex); 422 dev->status = STATUS_DISCONNECTED; 423 wake_up_interruptible(&dev->wait_data); 424 wake_up_interruptible(&dev->wait_buffer); 425 mutex_unlock(&dev->io_mutex); 426 v4l2_device_disconnect(&dev->v4l2_dev); 427 msleep(100); 428 flush_workqueue(dev->workqueue); 429 mutex_lock(&dev->io_mutex); 430 hdpvr_cancel_queue(dev); 431 mutex_unlock(&dev->io_mutex); 432 #if IS_ENABLED(CONFIG_I2C) 433 i2c_del_adapter(&dev->i2c_adapter); 434 #endif 435 video_unregister_device(&dev->video_dev); 436 atomic_dec(&dev_nr); 437 } 438 439 440 static struct usb_driver hdpvr_usb_driver = { 441 .name = "hdpvr", 442 .probe = hdpvr_probe, 443 .disconnect = hdpvr_disconnect, 444 .id_table = hdpvr_table, 445 }; 446 447 module_usb_driver(hdpvr_usb_driver); 448 449 MODULE_LICENSE("GPL"); 450 MODULE_VERSION("0.2.1"); 451 MODULE_AUTHOR("Janne Grunau"); 452 MODULE_DESCRIPTION("Hauppauge HD PVR driver"); 453