Commit | Line | Data |
---|---|---|
d72d5067 MCC |
1 | /* |
2 | * | |
e28f49b0 | 3 | * Support for audio capture for tm5600/6000/6010 |
37e59f87 | 4 | * (c) 2007-2008 Mauro Carvalho Chehab |
d72d5067 | 5 | * |
7ca30c52 | 6 | * Based on cx88-alsa.c |
d72d5067 MCC |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
7ca30c52 MCC |
9 | * it under the terms of the GNU General Public License version 2 as |
10 | * published by the Free Software Foundation. | |
d72d5067 MCC |
11 | */ |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/interrupt.h> | |
6ad6e88a | 17 | #include <linux/usb.h> |
4ef09889 | 18 | #include <linux/slab.h> |
54b78608 | 19 | #include <linux/vmalloc.h> |
d72d5067 | 20 | |
d684aee3 | 21 | #include <linux/delay.h> |
d72d5067 MCC |
22 | #include <sound/core.h> |
23 | #include <sound/pcm.h> | |
24 | #include <sound/pcm_params.h> | |
25 | #include <sound/control.h> | |
26 | #include <sound/initval.h> | |
d72d5067 | 27 | |
d72d5067 | 28 | |
7ca30c52 MCC |
29 | #include "tm6000.h" |
30 | #include "tm6000-regs.h" | |
31 | ||
32 | #undef dprintk | |
d72d5067 | 33 | |
7ca30c52 MCC |
34 | #define dprintk(level, fmt, arg...) do { \ |
35 | if (debug >= level) \ | |
36 | printk(KERN_INFO "%s/1: " fmt, chip->core->name , ## arg); \ | |
37 | } while (0) | |
d72d5067 | 38 | |
d72d5067 MCC |
39 | /**************************************************************************** |
40 | Module global static vars | |
41 | ****************************************************************************/ | |
42 | ||
43 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ | |
0e57ff8d | 44 | |
90ab5ee9 | 45 | static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 1}; |
d72d5067 MCC |
46 | |
47 | module_param_array(enable, bool, NULL, 0444); | |
7ca30c52 | 48 | MODULE_PARM_DESC(enable, "Enable tm6000x soundcard. default enabled."); |
d72d5067 MCC |
49 | |
50 | module_param_array(index, int, NULL, 0444); | |
7ca30c52 | 51 | MODULE_PARM_DESC(index, "Index value for tm6000x capture interface(s)."); |
d72d5067 MCC |
52 | |
53 | ||
54 | /**************************************************************************** | |
55 | Module macros | |
56 | ****************************************************************************/ | |
57 | ||
e28f49b0 | 58 | MODULE_DESCRIPTION("ALSA driver module for tm5600/tm6000/tm6010 based TV cards"); |
37e59f87 | 59 | MODULE_AUTHOR("Mauro Carvalho Chehab"); |
d72d5067 | 60 | MODULE_LICENSE("GPL"); |
7ca30c52 | 61 | MODULE_SUPPORTED_DEVICE("{{Trident,tm5600}," |
e28f49b0 DB |
62 | "{{Trident,tm6000}," |
63 | "{{Trident,tm6010}"); | |
d72d5067 | 64 | static unsigned int debug; |
7ca30c52 MCC |
65 | module_param(debug, int, 0644); |
66 | MODULE_PARM_DESC(debug, "enable debug messages"); | |
d72d5067 MCC |
67 | |
68 | /**************************************************************************** | |
69 | Module specific funtions | |
70 | ****************************************************************************/ | |
71 | ||
72 | /* | |
73 | * BOARD Specific: Sets audio DMA | |
74 | */ | |
75 | ||
7ca30c52 | 76 | static int _tm6000_start_audio_dma(struct snd_tm6000_card *chip) |
d72d5067 | 77 | { |
7ca30c52 | 78 | struct tm6000_core *core = chip->core; |
d72d5067 | 79 | |
3f23a81a MCC |
80 | dprintk(1, "Starting audio DMA\n"); |
81 | ||
7ca30c52 | 82 | /* Enables audio */ |
4129e560 | 83 | tm6000_set_reg_mask(core, TM6010_REQ07_RCC_ACTIVE_IF, 0x40, 0x40); |
d72d5067 | 84 | |
a59bff37 MCC |
85 | tm6000_set_audio_bitrate(core, 48000); |
86 | ||
d72d5067 MCC |
87 | return 0; |
88 | } | |
89 | ||
90 | /* | |
91 | * BOARD Specific: Resets audio DMA | |
92 | */ | |
7ca30c52 | 93 | static int _tm6000_stop_audio_dma(struct snd_tm6000_card *chip) |
d72d5067 | 94 | { |
7ca30c52 | 95 | struct tm6000_core *core = chip->core; |
8aff8ba9 | 96 | |
d72d5067 MCC |
97 | dprintk(1, "Stopping audio DMA\n"); |
98 | ||
8aff8ba9 | 99 | /* Disables audio */ |
4129e560 | 100 | tm6000_set_reg_mask(core, TM6010_REQ07_RCC_ACTIVE_IF, 0x00, 0x40); |
d72d5067 | 101 | |
d72d5067 MCC |
102 | return 0; |
103 | } | |
104 | ||
54b78608 | 105 | static void dsp_buffer_free(struct snd_pcm_substream *substream) |
d72d5067 | 106 | { |
54b78608 | 107 | struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream); |
d72d5067 | 108 | |
7ca30c52 | 109 | dprintk(2, "Freeing buffer\n"); |
d72d5067 | 110 | |
54b78608 MCC |
111 | vfree(substream->runtime->dma_area); |
112 | substream->runtime->dma_area = NULL; | |
113 | substream->runtime->dma_bytes = 0; | |
114 | } | |
115 | ||
116 | static int dsp_buffer_alloc(struct snd_pcm_substream *substream, int size) | |
117 | { | |
118 | struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream); | |
119 | ||
120 | dprintk(2, "Allocating buffer\n"); | |
d72d5067 | 121 | |
54b78608 MCC |
122 | if (substream->runtime->dma_area) { |
123 | if (substream->runtime->dma_bytes > size) | |
124 | return 0; | |
37f9619d | 125 | |
54b78608 MCC |
126 | dsp_buffer_free(substream); |
127 | } | |
128 | ||
129 | substream->runtime->dma_area = vmalloc(size); | |
130 | if (!substream->runtime->dma_area) | |
131 | return -ENOMEM; | |
d72d5067 | 132 | |
54b78608 MCC |
133 | substream->runtime->dma_bytes = size; |
134 | ||
135 | return 0; | |
d72d5067 MCC |
136 | } |
137 | ||
54b78608 | 138 | |
d72d5067 MCC |
139 | /**************************************************************************** |
140 | ALSA PCM Interface | |
141 | ****************************************************************************/ | |
142 | ||
143 | /* | |
144 | * Digital hardware definition | |
145 | */ | |
146 | #define DEFAULT_FIFO_SIZE 4096 | |
7ca30c52 MCC |
147 | |
148 | static struct snd_pcm_hardware snd_tm6000_digital_hw = { | |
75f064f2 MCC |
149 | .info = SNDRV_PCM_INFO_BATCH | |
150 | SNDRV_PCM_INFO_MMAP | | |
d72d5067 MCC |
151 | SNDRV_PCM_INFO_INTERLEAVED | |
152 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
153 | SNDRV_PCM_INFO_MMAP_VALID, | |
154 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
155 | ||
75f064f2 | 156 | .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_KNOT, |
37f9619d AD |
157 | .rate_min = 48000, |
158 | .rate_max = 48000, | |
d72d5067 MCC |
159 | .channels_min = 2, |
160 | .channels_max = 2, | |
73f4d265 DB |
161 | .period_bytes_min = 64, |
162 | .period_bytes_max = 12544, | |
75f064f2 | 163 | .periods_min = 2, |
73f4d265 | 164 | .periods_max = 98, |
e8cbf035 | 165 | .buffer_bytes_max = 62720 * 8, |
d72d5067 MCC |
166 | }; |
167 | ||
168 | /* | |
169 | * audio pcm capture open callback | |
170 | */ | |
7ca30c52 | 171 | static int snd_tm6000_pcm_open(struct snd_pcm_substream *substream) |
d72d5067 | 172 | { |
7ca30c52 | 173 | struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream); |
d72d5067 MCC |
174 | struct snd_pcm_runtime *runtime = substream->runtime; |
175 | int err; | |
176 | ||
7ca30c52 MCC |
177 | err = snd_pcm_hw_constraint_pow2(runtime, 0, |
178 | SNDRV_PCM_HW_PARAM_PERIODS); | |
d72d5067 MCC |
179 | if (err < 0) |
180 | goto _error; | |
181 | ||
182 | chip->substream = substream; | |
183 | ||
7ca30c52 | 184 | runtime->hw = snd_tm6000_digital_hw; |
75f064f2 | 185 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
d72d5067 MCC |
186 | |
187 | return 0; | |
188 | _error: | |
7ca30c52 | 189 | dprintk(1, "Error opening PCM!\n"); |
d72d5067 MCC |
190 | return err; |
191 | } | |
192 | ||
193 | /* | |
194 | * audio close callback | |
195 | */ | |
7ca30c52 | 196 | static int snd_tm6000_close(struct snd_pcm_substream *substream) |
d72d5067 | 197 | { |
06f08e3a MCC |
198 | struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream); |
199 | struct tm6000_core *core = chip->core; | |
200 | ||
201 | if (atomic_read(&core->stream_started) > 0) { | |
202 | atomic_set(&core->stream_started, 0); | |
203 | schedule_work(&core->wq_trigger); | |
204 | } | |
205 | ||
d72d5067 MCC |
206 | return 0; |
207 | } | |
208 | ||
b17b8699 MCC |
209 | static int tm6000_fillbuf(struct tm6000_core *core, char *buf, int size) |
210 | { | |
e8cbf035 MCC |
211 | struct snd_tm6000_card *chip = core->adev; |
212 | struct snd_pcm_substream *substream = chip->substream; | |
213 | struct snd_pcm_runtime *runtime; | |
214 | int period_elapsed = 0; | |
215 | unsigned int stride, buf_pos; | |
73f4d265 | 216 | int length; |
e8cbf035 | 217 | |
06f08e3a MCC |
218 | if (atomic_read(&core->stream_started) == 0) |
219 | return 0; | |
220 | ||
73f4d265 DB |
221 | if (!size || !substream) { |
222 | dprintk(1, "substream was NULL\n"); | |
e8cbf035 | 223 | return -EINVAL; |
73f4d265 | 224 | } |
e8cbf035 MCC |
225 | |
226 | runtime = substream->runtime; | |
73f4d265 DB |
227 | if (!runtime || !runtime->dma_area) { |
228 | dprintk(1, "runtime was NULL\n"); | |
e8cbf035 | 229 | return -EINVAL; |
73f4d265 | 230 | } |
e8cbf035 MCC |
231 | |
232 | buf_pos = chip->buf_pos; | |
233 | stride = runtime->frame_bits >> 3; | |
234 | ||
73f4d265 DB |
235 | if (stride == 0) { |
236 | dprintk(1, "stride is zero\n"); | |
237 | return -EINVAL; | |
238 | } | |
239 | ||
240 | length = size / stride; | |
241 | if (length == 0) { | |
242 | dprintk(1, "%s: length was zero\n", __func__); | |
243 | return -EINVAL; | |
244 | } | |
245 | ||
e8cbf035 MCC |
246 | dprintk(1, "Copying %d bytes at %p[%d] - buf size=%d x %d\n", size, |
247 | runtime->dma_area, buf_pos, | |
248 | (unsigned int)runtime->buffer_size, stride); | |
249 | ||
73f4d265 DB |
250 | if (buf_pos + length >= runtime->buffer_size) { |
251 | unsigned int cnt = runtime->buffer_size - buf_pos; | |
252 | memcpy(runtime->dma_area + buf_pos * stride, buf, cnt * stride); | |
253 | memcpy(runtime->dma_area, buf + cnt * stride, | |
254 | length * stride - cnt * stride); | |
e8cbf035 | 255 | } else |
73f4d265 DB |
256 | memcpy(runtime->dma_area + buf_pos * stride, buf, |
257 | length * stride); | |
e8cbf035 | 258 | |
d684aee3 | 259 | snd_pcm_stream_lock(substream); |
e8cbf035 | 260 | |
73f4d265 DB |
261 | chip->buf_pos += length; |
262 | if (chip->buf_pos >= runtime->buffer_size) | |
263 | chip->buf_pos -= runtime->buffer_size; | |
264 | ||
265 | chip->period_pos += length; | |
e8cbf035 MCC |
266 | if (chip->period_pos >= runtime->period_size) { |
267 | chip->period_pos -= runtime->period_size; | |
268 | period_elapsed = 1; | |
269 | } | |
b17b8699 | 270 | |
d684aee3 | 271 | snd_pcm_stream_unlock(substream); |
73f4d265 | 272 | |
e8cbf035 MCC |
273 | if (period_elapsed) |
274 | snd_pcm_period_elapsed(substream); | |
b17b8699 MCC |
275 | |
276 | return 0; | |
277 | } | |
278 | ||
d72d5067 MCC |
279 | /* |
280 | * hw_params callback | |
281 | */ | |
7ca30c52 MCC |
282 | static int snd_tm6000_hw_params(struct snd_pcm_substream *substream, |
283 | struct snd_pcm_hw_params *hw_params) | |
d72d5067 | 284 | { |
54b78608 | 285 | int size, rc; |
7ca30c52 | 286 | |
54b78608 | 287 | size = params_period_bytes(hw_params) * params_periods(hw_params); |
7ca30c52 | 288 | |
54b78608 MCC |
289 | rc = dsp_buffer_alloc(substream, size); |
290 | if (rc < 0) | |
291 | return rc; | |
7ca30c52 MCC |
292 | |
293 | return 0; | |
d72d5067 MCC |
294 | } |
295 | ||
296 | /* | |
297 | * hw free callback | |
298 | */ | |
7ca30c52 | 299 | static int snd_tm6000_hw_free(struct snd_pcm_substream *substream) |
d72d5067 | 300 | { |
3f23a81a | 301 | struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream); |
06f08e3a | 302 | struct tm6000_core *core = chip->core; |
3f23a81a | 303 | |
06f08e3a MCC |
304 | if (atomic_read(&core->stream_started) > 0) { |
305 | atomic_set(&core->stream_started, 0); | |
306 | schedule_work(&core->wq_trigger); | |
307 | } | |
d72d5067 | 308 | |
8d90e1e3 | 309 | dsp_buffer_free(substream); |
d72d5067 MCC |
310 | return 0; |
311 | } | |
312 | ||
313 | /* | |
314 | * prepare callback | |
315 | */ | |
7ca30c52 | 316 | static int snd_tm6000_prepare(struct snd_pcm_substream *substream) |
d72d5067 | 317 | { |
3f23a81a MCC |
318 | struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream); |
319 | ||
320 | chip->buf_pos = 0; | |
321 | chip->period_pos = 0; | |
322 | ||
d72d5067 MCC |
323 | return 0; |
324 | } | |
325 | ||
7ca30c52 | 326 | |
d72d5067 MCC |
327 | /* |
328 | * trigger callback | |
329 | */ | |
06f08e3a MCC |
330 | static void audio_trigger(struct work_struct *work) |
331 | { | |
332 | struct tm6000_core *core = container_of(work, struct tm6000_core, | |
333 | wq_trigger); | |
334 | struct snd_tm6000_card *chip = core->adev; | |
335 | ||
336 | if (atomic_read(&core->stream_started)) { | |
337 | dprintk(1, "starting capture"); | |
338 | _tm6000_start_audio_dma(chip); | |
339 | } else { | |
340 | dprintk(1, "stopping capture"); | |
341 | _tm6000_stop_audio_dma(chip); | |
342 | } | |
343 | } | |
344 | ||
7ca30c52 | 345 | static int snd_tm6000_card_trigger(struct snd_pcm_substream *substream, int cmd) |
d72d5067 | 346 | { |
7ca30c52 | 347 | struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream); |
06f08e3a MCC |
348 | struct tm6000_core *core = chip->core; |
349 | int err = 0; | |
d72d5067 MCC |
350 | |
351 | switch (cmd) { | |
75f064f2 MCC |
352 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: /* fall through */ |
353 | case SNDRV_PCM_TRIGGER_RESUME: /* fall through */ | |
d72d5067 | 354 | case SNDRV_PCM_TRIGGER_START: |
06f08e3a | 355 | atomic_set(&core->stream_started, 1); |
d72d5067 | 356 | break; |
75f064f2 MCC |
357 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: /* fall through */ |
358 | case SNDRV_PCM_TRIGGER_SUSPEND: /* fall through */ | |
d72d5067 | 359 | case SNDRV_PCM_TRIGGER_STOP: |
06f08e3a | 360 | atomic_set(&core->stream_started, 0); |
d72d5067 MCC |
361 | break; |
362 | default: | |
7ca30c52 | 363 | err = -EINVAL; |
d72d5067 MCC |
364 | break; |
365 | } | |
06f08e3a | 366 | schedule_work(&core->wq_trigger); |
d72d5067 MCC |
367 | |
368 | return err; | |
369 | } | |
d72d5067 MCC |
370 | /* |
371 | * pointer callback | |
372 | */ | |
7ca30c52 | 373 | static snd_pcm_uframes_t snd_tm6000_pointer(struct snd_pcm_substream *substream) |
d72d5067 | 374 | { |
7ca30c52 | 375 | struct snd_tm6000_card *chip = snd_pcm_substream_chip(substream); |
d72d5067 | 376 | |
3f23a81a | 377 | return chip->buf_pos; |
d72d5067 MCC |
378 | } |
379 | ||
75f064f2 MCC |
380 | static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, |
381 | unsigned long offset) | |
382 | { | |
383 | void *pageptr = subs->runtime->dma_area + offset; | |
384 | ||
385 | return vmalloc_to_page(pageptr); | |
386 | } | |
387 | ||
d72d5067 MCC |
388 | /* |
389 | * operators | |
390 | */ | |
7ca30c52 MCC |
391 | static struct snd_pcm_ops snd_tm6000_pcm_ops = { |
392 | .open = snd_tm6000_pcm_open, | |
393 | .close = snd_tm6000_close, | |
d72d5067 | 394 | .ioctl = snd_pcm_lib_ioctl, |
7ca30c52 MCC |
395 | .hw_params = snd_tm6000_hw_params, |
396 | .hw_free = snd_tm6000_hw_free, | |
397 | .prepare = snd_tm6000_prepare, | |
398 | .trigger = snd_tm6000_card_trigger, | |
399 | .pointer = snd_tm6000_pointer, | |
75f064f2 | 400 | .page = snd_pcm_get_vmalloc_page, |
d72d5067 MCC |
401 | }; |
402 | ||
403 | /* | |
404 | * create a PCM device | |
405 | */ | |
d72d5067 | 406 | |
7ca30c52 | 407 | /* FIXME: Control interface - How to control volume/mute? */ |
d72d5067 MCC |
408 | |
409 | /**************************************************************************** | |
410 | Basic Flow for Sound Devices | |
411 | ****************************************************************************/ | |
412 | ||
d72d5067 MCC |
413 | /* |
414 | * Alsa Constructor - Component probe | |
415 | */ | |
3d1a51db | 416 | static int tm6000_audio_init(struct tm6000_core *dev) |
d72d5067 | 417 | { |
d77057f2 SR |
418 | struct snd_card *card; |
419 | struct snd_tm6000_card *chip; | |
420 | int rc; | |
421 | static int devnr; | |
422 | char component[14]; | |
423 | struct snd_pcm *pcm; | |
424 | ||
425 | if (!dev) | |
426 | return 0; | |
6ad6e88a | 427 | |
d77057f2 | 428 | if (devnr >= SNDRV_CARDS) |
6ad6e88a MCC |
429 | return -ENODEV; |
430 | ||
d77057f2 | 431 | if (!enable[devnr]) |
6ad6e88a MCC |
432 | return -ENOENT; |
433 | ||
0e57ff8d | 434 | rc = snd_card_create(index[devnr], "tm6000", THIS_MODULE, 0, &card); |
427f7fac | 435 | if (rc < 0) { |
d77057f2 | 436 | snd_printk(KERN_ERR "cannot create card instance %d\n", devnr); |
427f7fac | 437 | return rc; |
6ad6e88a | 438 | } |
3f23a81a MCC |
439 | strcpy(card->driver, "tm6000-alsa"); |
440 | strcpy(card->shortname, "TM5600/60x0"); | |
441 | sprintf(card->longname, "TM5600/60x0 Audio at bus %d device %d", | |
442 | dev->udev->bus->busnum, dev->udev->devnum); | |
443 | ||
444 | sprintf(component, "USB%04x:%04x", | |
445 | le16_to_cpu(dev->udev->descriptor.idVendor), | |
446 | le16_to_cpu(dev->udev->descriptor.idProduct)); | |
447 | snd_component_add(card, component); | |
448 | snd_card_set_dev(card, &dev->udev->dev); | |
6ad6e88a | 449 | |
d77057f2 | 450 | chip = kzalloc(sizeof(struct snd_tm6000_card), GFP_KERNEL); |
6ad6e88a MCC |
451 | if (!chip) { |
452 | rc = -ENOMEM; | |
453 | goto error; | |
454 | } | |
455 | ||
3f23a81a MCC |
456 | chip->core = dev; |
457 | chip->card = card; | |
458 | dev->adev = chip; | |
d77057f2 | 459 | spin_lock_init(&chip->reg_lock); |
3f23a81a | 460 | |
d77057f2 | 461 | rc = snd_pcm_new(card, "TM6000 Audio", 0, 0, 1, &pcm); |
6ad6e88a | 462 | if (rc < 0) |
cd6541c0 | 463 | goto error_chip; |
6ad6e88a | 464 | |
d77057f2 | 465 | pcm->info_flags = 0; |
3f23a81a | 466 | pcm->private_data = chip; |
d77057f2 | 467 | strcpy(pcm->name, "Trident TM5600/60x0"); |
d77057f2 | 468 | |
3f23a81a | 469 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_tm6000_pcm_ops); |
d77057f2 | 470 | |
06f08e3a | 471 | INIT_WORK(&dev->wq_trigger, audio_trigger); |
6ad6e88a MCC |
472 | rc = snd_card_register(card); |
473 | if (rc < 0) | |
cd6541c0 | 474 | goto error_chip; |
6ad6e88a | 475 | |
d684aee3 | 476 | dprintk(1, "Registered audio driver for %s\n", card->longname); |
d72d5067 | 477 | |
d72d5067 | 478 | return 0; |
d72d5067 | 479 | |
cd6541c0 KV |
480 | error_chip: |
481 | kfree(chip); | |
482 | dev->adev = NULL; | |
6ad6e88a MCC |
483 | error: |
484 | snd_card_free(card); | |
485 | return rc; | |
d72d5067 MCC |
486 | } |
487 | ||
0439db75 SR |
488 | static int tm6000_audio_fini(struct tm6000_core *dev) |
489 | { | |
e839776f | 490 | struct snd_tm6000_card *chip; |
d77057f2 SR |
491 | |
492 | if (!dev) | |
493 | return 0; | |
e839776f | 494 | chip = dev->adev; |
d77057f2 SR |
495 | |
496 | if (!chip) | |
497 | return 0; | |
498 | ||
499 | if (!chip->card) | |
500 | return 0; | |
501 | ||
502 | snd_card_free(chip->card); | |
503 | chip->card = NULL; | |
504 | kfree(chip); | |
505 | dev->adev = NULL; | |
506 | ||
0439db75 SR |
507 | return 0; |
508 | } | |
509 | ||
3d1a51db | 510 | static struct tm6000_ops audio_ops = { |
39e1256b | 511 | .type = TM6000_AUDIO, |
0439db75 SR |
512 | .name = "TM6000 Audio Extension", |
513 | .init = tm6000_audio_init, | |
514 | .fini = tm6000_audio_fini, | |
b17b8699 | 515 | .fillbuf = tm6000_fillbuf, |
0439db75 SR |
516 | }; |
517 | ||
518 | static int __init tm6000_alsa_register(void) | |
519 | { | |
520 | return tm6000_register_extension(&audio_ops); | |
521 | } | |
522 | ||
523 | static void __exit tm6000_alsa_unregister(void) | |
524 | { | |
525 | tm6000_unregister_extension(&audio_ops); | |
526 | } | |
527 | ||
528 | module_init(tm6000_alsa_register); | |
529 | module_exit(tm6000_alsa_unregister); |