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Linux 3.11-rc3
[cris-mirror.git] / drivers / media / usb / hdpvr / hdpvr-core.c
blobcb694055ba7d103ad75bfd73b2f41a0b0cb1e315
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
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(5*buf_size+1, GFP_KERNEL);
129 if (!print_buf) {
130 v4l2_err(&dev->v4l2_dev, "Out of memory\n");
131 return retval;
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) {
143 v4l2_err(&dev->v4l2_dev,
144 "unexpected answer of status request, len %d\n", ret);
145 goto unlock;
146 }
147 #ifdef HDPVR_DEBUG
148 else {
149 hex_dump_to_buffer(dev->usbc_buf, 46, 16, 1, print_buf,
150 5*buf_size+1, 0);
151 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
152 "Status request returned, len %d: %s\n",
153 ret, print_buf);
154 }
155 #endif
156
157 dev->fw_ver = dev->usbc_buf[1];
158
159 v4l2_info(&dev->v4l2_dev, "firmware version 0x%x dated %s\n",
160 dev->fw_ver, &dev->usbc_buf[2]);
161
162 if (dev->fw_ver > 0x15) {
163 dev->options.brightness = 0x80;
164 dev->options.contrast = 0x40;
165 dev->options.hue = 0xf;
166 dev->options.saturation = 0x40;
167 dev->options.sharpness = 0x80;
168 }
169
170 switch (dev->fw_ver) {
171 case HDPVR_FIRMWARE_VERSION:
172 dev->flags &= ~HDPVR_FLAG_AC3_CAP;
173 break;
174 case HDPVR_FIRMWARE_VERSION_AC3:
175 case HDPVR_FIRMWARE_VERSION_0X12:
176 case HDPVR_FIRMWARE_VERSION_0X15:
177 case HDPVR_FIRMWARE_VERSION_0X1E:
178 dev->flags |= HDPVR_FLAG_AC3_CAP;
179 break;
180 default:
181 v4l2_info(&dev->v4l2_dev, "untested firmware, the driver might"
182 " not work.\n");
183 if (dev->fw_ver >= HDPVR_FIRMWARE_VERSION_AC3)
184 dev->flags |= HDPVR_FLAG_AC3_CAP;
185 else
186 dev->flags &= ~HDPVR_FLAG_AC3_CAP;
187 }
188
189 response = dev->usbc_buf+38;
190 #ifdef HDPVR_DEBUG
191 hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 0);
192 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, "challenge: %s\n",
193 print_buf);
194 #endif
195 challenge(response);
196 #ifdef HDPVR_DEBUG
197 hex_dump_to_buffer(response, 8, 16, 1, print_buf, 5*buf_size+1, 0);
198 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, " response: %s\n",
199 print_buf);
200 kfree(print_buf);
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);
210 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
211 "magic request returned %d\n", ret);
212
213 retval = ret != 8;
214 unlock:
215 mutex_unlock(&dev->usbc_mutex);
216 return retval;
217 }
218
219 static int hdpvr_device_init(struct hdpvr_device *dev)
220 {
221 int ret;
222 u8 *buf;
223
224 if (device_authorization(dev))
225 return -EACCES;
226
227 /* default options for init */
228 hdpvr_set_options(dev);
229
230 /* set filter options */
231 mutex_lock(&dev->usbc_mutex);
232 buf = dev->usbc_buf;
233 buf[0] = 0x03; buf[1] = 0x03; buf[2] = 0x00; buf[3] = 0x00;
234 ret = usb_control_msg(dev->udev,
235 usb_sndctrlpipe(dev->udev, 0),
236 0x01, 0x38,
237 CTRL_LOW_PASS_FILTER_VALUE, CTRL_DEFAULT_INDEX,
238 buf, 4,
239 1000);
240 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
241 "control request returned %d\n", ret);
242 mutex_unlock(&dev->usbc_mutex);
243
244 /* enable fan and bling leds */
245 mutex_lock(&dev->usbc_mutex);
246 buf[0] = 0x1;
247 ret = usb_control_msg(dev->udev,
248 usb_sndctrlpipe(dev->udev, 0),
249 0xd4, 0x38, 0, 0, buf, 1,
250 1000);
251 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
252 "control request returned %d\n", ret);
253
254 /* boost analog audio */
255 buf[0] = boost_audio;
256 ret = usb_control_msg(dev->udev,
257 usb_sndctrlpipe(dev->udev, 0),
258 0xd5, 0x38, 0, 0, buf, 1,
259 1000);
260 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
261 "control request returned %d\n", ret);
262 mutex_unlock(&dev->usbc_mutex);
263
264 dev->status = STATUS_IDLE;
265 return 0;
266 }
267
268 static const struct hdpvr_options hdpvr_default_options = {
269 .video_std = HDPVR_60HZ,
270 .video_input = HDPVR_COMPONENT,
271 .audio_input = HDPVR_RCA_BACK,
272 .bitrate = 65, /* 6 mbps */
273 .peak_bitrate = 90, /* 9 mbps */
274 .bitrate_mode = HDPVR_CONSTANT,
275 .gop_mode = HDPVR_SIMPLE_IDR_GOP,
276 .audio_codec = V4L2_MPEG_AUDIO_ENCODING_AAC,
277 /* original picture controls for firmware version <= 0x15 */
278 /* updated in device_authorization() for newer firmware */
279 .brightness = 0x86,
280 .contrast = 0x80,
281 .hue = 0x80,
282 .saturation = 0x80,
283 .sharpness = 0x80,
284 };
285
286 static int hdpvr_probe(struct usb_interface *interface,
287 const struct usb_device_id *id)
288 {
289 struct hdpvr_device *dev;
290 struct usb_host_interface *iface_desc;
291 struct usb_endpoint_descriptor *endpoint;
292 struct i2c_client *client;
293 size_t buffer_size;
294 int i;
295 int retval = -ENOMEM;
296
297 /* allocate memory for our device state and initialize it */
298 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
299 if (!dev) {
300 dev_err(&interface->dev, "Out of memory\n");
301 goto error;
302 }
303
304 dev->workqueue = 0;
305
306 /* register v4l2_device early so it can be used for printks */
307 if (v4l2_device_register(&interface->dev, &dev->v4l2_dev)) {
308 dev_err(&interface->dev, "v4l2_device_register failed\n");
309 goto error;
310 }
311
312 mutex_init(&dev->io_mutex);
313 mutex_init(&dev->i2c_mutex);
314 mutex_init(&dev->usbc_mutex);
315 dev->usbc_buf = kmalloc(64, GFP_KERNEL);
316 if (!dev->usbc_buf) {
317 v4l2_err(&dev->v4l2_dev, "Out of memory\n");
318 goto error;
319 }
320
321 init_waitqueue_head(&dev->wait_buffer);
322 init_waitqueue_head(&dev->wait_data);
323
324 dev->workqueue = create_singlethread_workqueue("hdpvr_buffer");
325 if (!dev->workqueue)
326 goto error;
327
328 /* init video transfer queues */
329 INIT_LIST_HEAD(&dev->free_buff_list);
330 INIT_LIST_HEAD(&dev->rec_buff_list);
331
332 dev->options = hdpvr_default_options;
333
334 if (default_video_input < HDPVR_VIDEO_INPUTS)
335 dev->options.video_input = default_video_input;
336
337 if (default_audio_input < HDPVR_AUDIO_INPUTS) {
338 dev->options.audio_input = default_audio_input;
339 if (default_audio_input == HDPVR_SPDIF)
340 dev->options.audio_codec =
341 V4L2_MPEG_AUDIO_ENCODING_AC3;
342 }
343
344 dev->udev = usb_get_dev(interface_to_usbdev(interface));
345
346 /* set up the endpoint information */
347 /* use only the first bulk-in and bulk-out endpoints */
348 iface_desc = interface->cur_altsetting;
349 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
350 endpoint = &iface_desc->endpoint[i].desc;
351
352 if (!dev->bulk_in_endpointAddr &&
353 usb_endpoint_is_bulk_in(endpoint)) {
354 /* USB interface description is buggy, reported max
355 * packet size is 512 bytes, windows driver uses 8192 */
356 buffer_size = 8192;
357 dev->bulk_in_size = buffer_size;
358 dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
359 }
360
361 }
362 if (!dev->bulk_in_endpointAddr) {
363 v4l2_err(&dev->v4l2_dev, "Could not find bulk-in endpoint\n");
364 goto error;
365 }
366
367 /* init the device */
368 if (hdpvr_device_init(dev)) {
369 v4l2_err(&dev->v4l2_dev, "device init failed\n");
370 goto error;
371 }
372
373 mutex_lock(&dev->io_mutex);
374 if (hdpvr_alloc_buffers(dev, NUM_BUFFERS)) {
375 mutex_unlock(&dev->io_mutex);
376 v4l2_err(&dev->v4l2_dev,
377 "allocating transfer buffers failed\n");
378 goto error;
379 }
380 mutex_unlock(&dev->io_mutex);
381
382 #if IS_ENABLED(CONFIG_I2C)
383 retval = hdpvr_register_i2c_adapter(dev);
384 if (retval < 0) {
385 v4l2_err(&dev->v4l2_dev, "i2c adapter register failed\n");
386 goto error;
387 }
388
389 client = hdpvr_register_ir_rx_i2c(dev);
390 if (!client) {
391 v4l2_err(&dev->v4l2_dev, "i2c IR RX device register failed\n");
392 retval = -ENODEV;
393 goto reg_fail;
394 }
395
396 client = hdpvr_register_ir_tx_i2c(dev);
397 if (!client) {
398 v4l2_err(&dev->v4l2_dev, "i2c IR TX device register failed\n");
399 retval = -ENODEV;
400 goto reg_fail;
401 }
402 #endif
403
404 retval = hdpvr_register_videodev(dev, &interface->dev,
405 video_nr[atomic_inc_return(&dev_nr)]);
406 if (retval < 0) {
407 v4l2_err(&dev->v4l2_dev, "registering videodev failed\n");
408 goto error;
409 }
410
411 /* let the user know what node this device is now attached to */
412 v4l2_info(&dev->v4l2_dev, "device now attached to %s\n",
413 video_device_node_name(dev->video_dev));
414 return 0;
415
416 reg_fail:
417 #if IS_ENABLED(CONFIG_I2C)
418 i2c_del_adapter(&dev->i2c_adapter);
419 #endif
420 error:
421 if (dev) {
422 /* Destroy single thread */
423 if (dev->workqueue)
424 destroy_workqueue(dev->workqueue);
425 /* this frees allocated memory */
426 hdpvr_delete(dev);
427 }
428 return retval;
429 }
430
431 static void hdpvr_disconnect(struct usb_interface *interface)
432 {
433 struct hdpvr_device *dev = to_hdpvr_dev(usb_get_intfdata(interface));
434
435 v4l2_info(&dev->v4l2_dev, "device %s disconnected\n",
436 video_device_node_name(dev->video_dev));
437 /* prevent more I/O from starting and stop any ongoing */
438 mutex_lock(&dev->io_mutex);
439 dev->status = STATUS_DISCONNECTED;
440 wake_up_interruptible(&dev->wait_data);
441 wake_up_interruptible(&dev->wait_buffer);
442 mutex_unlock(&dev->io_mutex);
443 v4l2_device_disconnect(&dev->v4l2_dev);
444 msleep(100);
445 flush_workqueue(dev->workqueue);
446 mutex_lock(&dev->io_mutex);
447 hdpvr_cancel_queue(dev);
448 mutex_unlock(&dev->io_mutex);
449 #if IS_ENABLED(CONFIG_I2C)
450 i2c_del_adapter(&dev->i2c_adapter);
451 #endif
452 video_unregister_device(dev->video_dev);
453 atomic_dec(&dev_nr);
454 }
455
456
457 static struct usb_driver hdpvr_usb_driver = {
458 .name = "hdpvr",
459 .probe = hdpvr_probe,
460 .disconnect = hdpvr_disconnect,
461 .id_table = hdpvr_table,
462 };
463
464 module_usb_driver(hdpvr_usb_driver);
465
466 MODULE_LICENSE("GPL");
467 MODULE_VERSION("0.2.1");
468 MODULE_AUTHOR("Janne Grunau");
469 MODULE_DESCRIPTION("Hauppauge HD PVR driver");
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