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Linux/sound/firewire/oxfw/oxfw.c

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  1 /*
  2  * oxfw.c - a part of driver for OXFW970/971 based devices
  3  *
  4  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
  5  * Licensed under the terms of the GNU General Public License, version 2.
  6  */
  7 
  8 #include "oxfw.h"
  9 
 10 #define OXFORD_FIRMWARE_ID_ADDRESS      (CSR_REGISTER_BASE + 0x50000)
 11 /* 0x970?vvvv or 0x971?vvvv, where vvvv = firmware version */
 12 
 13 #define OXFORD_HARDWARE_ID_ADDRESS      (CSR_REGISTER_BASE + 0x90020)
 14 #define OXFORD_HARDWARE_ID_OXFW970      0x39443841
 15 #define OXFORD_HARDWARE_ID_OXFW971      0x39373100
 16 
 17 #define VENDOR_LOUD             0x000ff2
 18 #define VENDOR_GRIFFIN          0x001292
 19 #define VENDOR_BEHRINGER        0x001564
 20 #define VENDOR_LACIE            0x00d04b
 21 
 22 #define SPECIFIER_1394TA        0x00a02d
 23 #define VERSION_AVC             0x010001
 24 
 25 MODULE_DESCRIPTION("Oxford Semiconductor FW970/971 driver");
 26 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
 27 MODULE_LICENSE("GPL v2");
 28 MODULE_ALIAS("snd-firewire-speakers");
 29 
 30 static bool detect_loud_models(struct fw_unit *unit)
 31 {
 32         const char *const models[] = {
 33                 "Onyxi",
 34                 "Onyx-i",
 35                 "d.Pro",
 36                 "Mackie Onyx Satellite",
 37                 "Tapco LINK.firewire 4x6",
 38                 "U.420"};
 39         char model[32];
 40         unsigned int i;
 41         int err;
 42 
 43         err = fw_csr_string(unit->directory, CSR_MODEL,
 44                             model, sizeof(model));
 45         if (err < 0)
 46                 return false;
 47 
 48         for (i = 0; i < ARRAY_SIZE(models); i++) {
 49                 if (strcmp(models[i], model) == 0)
 50                         break;
 51         }
 52 
 53         return (i < ARRAY_SIZE(models));
 54 }
 55 
 56 static int name_card(struct snd_oxfw *oxfw)
 57 {
 58         struct fw_device *fw_dev = fw_parent_device(oxfw->unit);
 59         char vendor[24];
 60         char model[32];
 61         const char *d, *v, *m;
 62         u32 firmware;
 63         int err;
 64 
 65         /* get vendor name from root directory */
 66         err = fw_csr_string(fw_dev->config_rom + 5, CSR_VENDOR,
 67                             vendor, sizeof(vendor));
 68         if (err < 0)
 69                 goto end;
 70 
 71         /* get model name from unit directory */
 72         err = fw_csr_string(oxfw->unit->directory, CSR_MODEL,
 73                             model, sizeof(model));
 74         if (err < 0)
 75                 goto end;
 76 
 77         err = snd_fw_transaction(oxfw->unit, TCODE_READ_QUADLET_REQUEST,
 78                                  OXFORD_FIRMWARE_ID_ADDRESS, &firmware, 4, 0);
 79         if (err < 0)
 80                 goto end;
 81         be32_to_cpus(&firmware);
 82 
 83         /* to apply card definitions */
 84         if (oxfw->device_info) {
 85                 d = oxfw->device_info->driver_name;
 86                 v = oxfw->device_info->vendor_name;
 87                 m = oxfw->device_info->model_name;
 88         } else {
 89                 d = "OXFW";
 90                 v = vendor;
 91                 m = model;
 92         }
 93 
 94         strcpy(oxfw->card->driver, d);
 95         strcpy(oxfw->card->mixername, m);
 96         strcpy(oxfw->card->shortname, m);
 97 
 98         snprintf(oxfw->card->longname, sizeof(oxfw->card->longname),
 99                  "%s %s (OXFW%x %04x), GUID %08x%08x at %s, S%d",
100                  v, m, firmware >> 20, firmware & 0xffff,
101                  fw_dev->config_rom[3], fw_dev->config_rom[4],
102                  dev_name(&oxfw->unit->device), 100 << fw_dev->max_speed);
103 end:
104         return err;
105 }
106 
107 /*
108  * This module releases the FireWire unit data after all ALSA character devices
109  * are released by applications. This is for releasing stream data or finishing
110  * transactions safely. Thus at returning from .remove(), this module still keep
111  * references for the unit.
112  */
113 static void oxfw_card_free(struct snd_card *card)
114 {
115         struct snd_oxfw *oxfw = card->private_data;
116         unsigned int i;
117 
118         snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->rx_stream);
119         if (oxfw->has_output)
120                 snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->tx_stream);
121 
122         fw_unit_put(oxfw->unit);
123 
124         for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
125                 kfree(oxfw->tx_stream_formats[i]);
126                 kfree(oxfw->rx_stream_formats[i]);
127         }
128 
129         mutex_destroy(&oxfw->mutex);
130 }
131 
132 static int oxfw_probe(struct fw_unit *unit,
133                        const struct ieee1394_device_id *id)
134 {
135         struct snd_card *card;
136         struct snd_oxfw *oxfw;
137         int err;
138 
139         if ((id->vendor_id == VENDOR_LOUD) && !detect_loud_models(unit))
140                 return -ENODEV;
141 
142         err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
143                            sizeof(*oxfw), &card);
144         if (err < 0)
145                 return err;
146 
147         card->private_free = oxfw_card_free;
148         oxfw = card->private_data;
149         oxfw->card = card;
150         mutex_init(&oxfw->mutex);
151         oxfw->unit = fw_unit_get(unit);
152         oxfw->device_info = (const struct device_info *)id->driver_data;
153         spin_lock_init(&oxfw->lock);
154         init_waitqueue_head(&oxfw->hwdep_wait);
155 
156         err = snd_oxfw_stream_discover(oxfw);
157         if (err < 0)
158                 goto error;
159 
160         err = name_card(oxfw);
161         if (err < 0)
162                 goto error;
163 
164         err = snd_oxfw_create_pcm(oxfw);
165         if (err < 0)
166                 goto error;
167 
168         if (oxfw->device_info) {
169                 err = snd_oxfw_create_mixer(oxfw);
170                 if (err < 0)
171                         goto error;
172         }
173 
174         snd_oxfw_proc_init(oxfw);
175 
176         err = snd_oxfw_create_midi(oxfw);
177         if (err < 0)
178                 goto error;
179 
180         err = snd_oxfw_create_hwdep(oxfw);
181         if (err < 0)
182                 goto error;
183 
184         err = snd_oxfw_stream_init_simplex(oxfw, &oxfw->rx_stream);
185         if (err < 0)
186                 goto error;
187         if (oxfw->has_output) {
188                 err = snd_oxfw_stream_init_simplex(oxfw, &oxfw->tx_stream);
189                 if (err < 0)
190                         goto error;
191         }
192 
193         err = snd_card_register(card);
194         if (err < 0) {
195                 snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->rx_stream);
196                 if (oxfw->has_output)
197                         snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->tx_stream);
198                 goto error;
199         }
200         dev_set_drvdata(&unit->device, oxfw);
201 
202         return 0;
203 error:
204         snd_card_free(card);
205         return err;
206 }
207 
208 static void oxfw_bus_reset(struct fw_unit *unit)
209 {
210         struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device);
211 
212         fcp_bus_reset(oxfw->unit);
213 
214         mutex_lock(&oxfw->mutex);
215 
216         snd_oxfw_stream_update_simplex(oxfw, &oxfw->rx_stream);
217         if (oxfw->has_output)
218                 snd_oxfw_stream_update_simplex(oxfw, &oxfw->tx_stream);
219 
220         mutex_unlock(&oxfw->mutex);
221 }
222 
223 static void oxfw_remove(struct fw_unit *unit)
224 {
225         struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device);
226 
227         /* No need to wait for releasing card object in this context. */
228         snd_card_free_when_closed(oxfw->card);
229 }
230 
231 static const struct device_info griffin_firewave = {
232         .driver_name = "FireWave",
233         .vendor_name = "Griffin",
234         .model_name = "FireWave",
235         .mixer_channels = 6,
236         .mute_fb_id   = 0x01,
237         .volume_fb_id = 0x02,
238 };
239 
240 static const struct device_info lacie_speakers = {
241         .driver_name = "FWSpeakers",
242         .vendor_name = "LaCie",
243         .model_name = "FireWire Speakers",
244         .mixer_channels = 1,
245         .mute_fb_id   = 0x01,
246         .volume_fb_id = 0x01,
247 };
248 
249 static const struct ieee1394_device_id oxfw_id_table[] = {
250         {
251                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
252                                 IEEE1394_MATCH_MODEL_ID |
253                                 IEEE1394_MATCH_SPECIFIER_ID |
254                                 IEEE1394_MATCH_VERSION,
255                 .vendor_id    = VENDOR_GRIFFIN,
256                 .model_id     = 0x00f970,
257                 .specifier_id = SPECIFIER_1394TA,
258                 .version      = VERSION_AVC,
259                 .driver_data  = (kernel_ulong_t)&griffin_firewave,
260         },
261         {
262                 .match_flags  = IEEE1394_MATCH_VENDOR_ID |
263                                 IEEE1394_MATCH_MODEL_ID |
264                                 IEEE1394_MATCH_SPECIFIER_ID |
265                                 IEEE1394_MATCH_VERSION,
266                 .vendor_id    = VENDOR_LACIE,
267                 .model_id     = 0x00f970,
268                 .specifier_id = SPECIFIER_1394TA,
269                 .version      = VERSION_AVC,
270                 .driver_data  = (kernel_ulong_t)&lacie_speakers,
271         },
272         /* Behringer,F-Control Audio 202 */
273         {
274                 .match_flags    = IEEE1394_MATCH_VENDOR_ID |
275                                   IEEE1394_MATCH_MODEL_ID,
276                 .vendor_id      = VENDOR_BEHRINGER,
277                 .model_id       = 0x00fc22,
278         },
279         /*
280          * Any Mackie(Loud) models (name string/model id):
281          *  Onyx-i series (former models):      0x081216
282          *  Mackie Onyx Satellite:              0x00200f
283          *  Tapco LINK.firewire 4x6:            0x000460
284          *  d.2 pro:                            Unknown
285          *  d.4 pro:                            Unknown
286          *  U.420:                              Unknown
287          *  U.420d:                             Unknown
288          */
289         {
290                 .match_flags    = IEEE1394_MATCH_VENDOR_ID |
291                                   IEEE1394_MATCH_SPECIFIER_ID |
292                                   IEEE1394_MATCH_VERSION,
293                 .vendor_id      = VENDOR_LOUD,
294                 .specifier_id   = SPECIFIER_1394TA,
295                 .version        = VERSION_AVC,
296         },
297         { }
298 };
299 MODULE_DEVICE_TABLE(ieee1394, oxfw_id_table);
300 
301 static struct fw_driver oxfw_driver = {
302         .driver   = {
303                 .owner  = THIS_MODULE,
304                 .name   = KBUILD_MODNAME,
305                 .bus    = &fw_bus_type,
306         },
307         .probe    = oxfw_probe,
308         .update   = oxfw_bus_reset,
309         .remove   = oxfw_remove,
310         .id_table = oxfw_id_table,
311 };
312 
313 static int __init snd_oxfw_init(void)
314 {
315         return driver_register(&oxfw_driver.driver);
316 }
317 
318 static void __exit snd_oxfw_exit(void)
319 {
320         driver_unregister(&oxfw_driver.driver);
321 }
322 
323 module_init(snd_oxfw_init);
324 module_exit(snd_oxfw_exit);
325 

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