Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | btaudio - bt878 audio dma driver for linux 2.4.x | |
3 | ||
4 | (c) 2000-2002 Gerd Knorr <kraxel@bytesex.org> | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | ||
20 | */ | |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/pci.h> | |
25 | #include <linux/sched.h> | |
26 | #include <linux/signal.h> | |
27 | #include <linux/types.h> | |
28 | #include <linux/interrupt.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/poll.h> | |
31 | #include <linux/sound.h> | |
32 | #include <linux/soundcard.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/kdev_t.h> | |
910f5d20 IM |
35 | #include <linux/mutex.h> |
36 | ||
1da177e4 LT |
37 | #include <asm/uaccess.h> |
38 | #include <asm/io.h> | |
39 | ||
40 | ||
41 | /* mmio access */ | |
42 | #define btwrite(dat,adr) writel((dat), (bta->mmio+(adr))) | |
43 | #define btread(adr) readl(bta->mmio+(adr)) | |
44 | ||
45 | #define btand(dat,adr) btwrite((dat) & btread(adr), adr) | |
46 | #define btor(dat,adr) btwrite((dat) | btread(adr), adr) | |
47 | #define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr) | |
48 | ||
49 | /* registers (shifted because bta->mmio is long) */ | |
50 | #define REG_INT_STAT (0x100 >> 2) | |
51 | #define REG_INT_MASK (0x104 >> 2) | |
52 | #define REG_GPIO_DMA_CTL (0x10c >> 2) | |
53 | #define REG_PACKET_LEN (0x110 >> 2) | |
54 | #define REG_RISC_STRT_ADD (0x114 >> 2) | |
55 | #define REG_RISC_COUNT (0x120 >> 2) | |
56 | ||
57 | /* IRQ bits - REG_INT_(STAT|MASK) */ | |
58 | #define IRQ_SCERR (1 << 19) | |
59 | #define IRQ_OCERR (1 << 18) | |
60 | #define IRQ_PABORT (1 << 17) | |
61 | #define IRQ_RIPERR (1 << 16) | |
62 | #define IRQ_PPERR (1 << 15) | |
63 | #define IRQ_FDSR (1 << 14) | |
64 | #define IRQ_FTRGT (1 << 13) | |
65 | #define IRQ_FBUS (1 << 12) | |
66 | #define IRQ_RISCI (1 << 11) | |
67 | #define IRQ_OFLOW (1 << 3) | |
68 | ||
69 | #define IRQ_BTAUDIO (IRQ_SCERR | IRQ_OCERR | IRQ_PABORT | IRQ_RIPERR |\ | |
70 | IRQ_PPERR | IRQ_FDSR | IRQ_FTRGT | IRQ_FBUS |\ | |
71 | IRQ_RISCI) | |
72 | ||
73 | /* REG_GPIO_DMA_CTL bits */ | |
74 | #define DMA_CTL_A_PWRDN (1 << 26) | |
75 | #define DMA_CTL_DA_SBR (1 << 14) | |
76 | #define DMA_CTL_DA_ES2 (1 << 13) | |
77 | #define DMA_CTL_ACAP_EN (1 << 4) | |
78 | #define DMA_CTL_RISC_EN (1 << 1) | |
79 | #define DMA_CTL_FIFO_EN (1 << 0) | |
80 | ||
81 | /* RISC instructions */ | |
82 | #define RISC_WRITE (0x01 << 28) | |
83 | #define RISC_JUMP (0x07 << 28) | |
84 | #define RISC_SYNC (0x08 << 28) | |
85 | ||
86 | /* RISC bits */ | |
87 | #define RISC_WR_SOL (1 << 27) | |
88 | #define RISC_WR_EOL (1 << 26) | |
89 | #define RISC_IRQ (1 << 24) | |
90 | #define RISC_SYNC_RESYNC (1 << 15) | |
91 | #define RISC_SYNC_FM1 0x06 | |
92 | #define RISC_SYNC_VRO 0x0c | |
93 | ||
94 | #define HWBASE_AD (448000) | |
95 | ||
96 | /* -------------------------------------------------------------- */ | |
97 | ||
98 | struct btaudio { | |
99 | /* linked list */ | |
100 | struct btaudio *next; | |
101 | ||
102 | /* device info */ | |
103 | int dsp_digital; | |
104 | int dsp_analog; | |
105 | int mixer_dev; | |
106 | struct pci_dev *pci; | |
107 | unsigned int irq; | |
108 | unsigned long mem; | |
109 | unsigned long __iomem *mmio; | |
110 | ||
111 | /* locking */ | |
112 | int users; | |
910f5d20 | 113 | struct mutex lock; |
1da177e4 LT |
114 | |
115 | /* risc instructions */ | |
116 | unsigned int risc_size; | |
117 | unsigned long *risc_cpu; | |
118 | dma_addr_t risc_dma; | |
119 | ||
120 | /* audio data */ | |
121 | unsigned int buf_size; | |
122 | unsigned char *buf_cpu; | |
123 | dma_addr_t buf_dma; | |
124 | ||
125 | /* buffer setup */ | |
126 | int line_bytes; | |
127 | int line_count; | |
128 | int block_bytes; | |
129 | int block_count; | |
130 | ||
131 | /* read fifo management */ | |
132 | int recording; | |
133 | int dma_block; | |
134 | int read_offset; | |
135 | int read_count; | |
136 | wait_queue_head_t readq; | |
137 | ||
138 | /* settings */ | |
139 | int gain[3]; | |
140 | int source; | |
141 | int bits; | |
142 | int decimation; | |
143 | int mixcount; | |
144 | int sampleshift; | |
145 | int channels; | |
146 | int analog; | |
147 | int rate; | |
148 | }; | |
149 | ||
150 | struct cardinfo { | |
151 | char *name; | |
152 | int rate; | |
153 | }; | |
154 | ||
155 | static struct btaudio *btaudios; | |
156 | static unsigned int debug; | |
157 | static unsigned int irq_debug; | |
158 | ||
159 | /* -------------------------------------------------------------- */ | |
160 | ||
161 | #define BUF_DEFAULT 128*1024 | |
162 | #define BUF_MIN 8192 | |
163 | ||
164 | static int alloc_buffer(struct btaudio *bta) | |
165 | { | |
166 | if (NULL == bta->buf_cpu) { | |
167 | for (bta->buf_size = BUF_DEFAULT; bta->buf_size >= BUF_MIN; | |
168 | bta->buf_size = bta->buf_size >> 1) { | |
169 | bta->buf_cpu = pci_alloc_consistent | |
170 | (bta->pci, bta->buf_size, &bta->buf_dma); | |
171 | if (NULL != bta->buf_cpu) | |
172 | break; | |
173 | } | |
174 | if (NULL == bta->buf_cpu) | |
175 | return -ENOMEM; | |
176 | memset(bta->buf_cpu,0,bta->buf_size); | |
177 | } | |
178 | if (NULL == bta->risc_cpu) { | |
179 | bta->risc_size = PAGE_SIZE; | |
180 | bta->risc_cpu = pci_alloc_consistent | |
181 | (bta->pci, bta->risc_size, &bta->risc_dma); | |
182 | if (NULL == bta->risc_cpu) { | |
183 | pci_free_consistent(bta->pci, bta->buf_size, bta->buf_cpu, bta->buf_dma); | |
184 | bta->buf_cpu = NULL; | |
185 | return -ENOMEM; | |
186 | } | |
187 | } | |
188 | return 0; | |
189 | } | |
190 | ||
191 | static void free_buffer(struct btaudio *bta) | |
192 | { | |
193 | if (NULL != bta->buf_cpu) { | |
194 | pci_free_consistent(bta->pci, bta->buf_size, | |
195 | bta->buf_cpu, bta->buf_dma); | |
196 | bta->buf_cpu = NULL; | |
197 | } | |
198 | if (NULL != bta->risc_cpu) { | |
199 | pci_free_consistent(bta->pci, bta->risc_size, | |
200 | bta->risc_cpu, bta->risc_dma); | |
201 | bta->risc_cpu = NULL; | |
202 | } | |
203 | } | |
204 | ||
205 | static int make_risc(struct btaudio *bta) | |
206 | { | |
207 | int rp, bp, line, block; | |
208 | unsigned long risc; | |
209 | ||
210 | bta->block_bytes = bta->buf_size >> 4; | |
211 | bta->block_count = 1 << 4; | |
212 | bta->line_bytes = bta->block_bytes; | |
213 | bta->line_count = bta->block_count; | |
214 | while (bta->line_bytes > 4095) { | |
215 | bta->line_bytes >>= 1; | |
216 | bta->line_count <<= 1; | |
217 | } | |
218 | if (bta->line_count > 255) | |
219 | return -EINVAL; | |
220 | if (debug) | |
221 | printk(KERN_DEBUG | |
222 | "btaudio: bufsize=%d - bs=%d bc=%d - ls=%d, lc=%d\n", | |
223 | bta->buf_size,bta->block_bytes,bta->block_count, | |
224 | bta->line_bytes,bta->line_count); | |
225 | rp = 0; bp = 0; | |
226 | block = 0; | |
227 | bta->risc_cpu[rp++] = cpu_to_le32(RISC_SYNC|RISC_SYNC_FM1); | |
228 | bta->risc_cpu[rp++] = cpu_to_le32(0); | |
229 | for (line = 0; line < bta->line_count; line++) { | |
230 | risc = RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL; | |
231 | risc |= bta->line_bytes; | |
232 | if (0 == (bp & (bta->block_bytes-1))) { | |
233 | risc |= RISC_IRQ; | |
234 | risc |= (block & 0x0f) << 16; | |
235 | risc |= (~block & 0x0f) << 20; | |
236 | block++; | |
237 | } | |
238 | bta->risc_cpu[rp++] = cpu_to_le32(risc); | |
239 | bta->risc_cpu[rp++] = cpu_to_le32(bta->buf_dma + bp); | |
240 | bp += bta->line_bytes; | |
241 | } | |
242 | bta->risc_cpu[rp++] = cpu_to_le32(RISC_SYNC|RISC_SYNC_VRO); | |
243 | bta->risc_cpu[rp++] = cpu_to_le32(0); | |
244 | bta->risc_cpu[rp++] = cpu_to_le32(RISC_JUMP); | |
245 | bta->risc_cpu[rp++] = cpu_to_le32(bta->risc_dma); | |
246 | return 0; | |
247 | } | |
248 | ||
249 | static int start_recording(struct btaudio *bta) | |
250 | { | |
251 | int ret; | |
252 | ||
253 | if (0 != (ret = alloc_buffer(bta))) | |
254 | return ret; | |
255 | if (0 != (ret = make_risc(bta))) | |
256 | return ret; | |
257 | ||
258 | btwrite(bta->risc_dma, REG_RISC_STRT_ADD); | |
259 | btwrite((bta->line_count << 16) | bta->line_bytes, | |
260 | REG_PACKET_LEN); | |
261 | btwrite(IRQ_BTAUDIO, REG_INT_MASK); | |
262 | if (bta->analog) { | |
263 | btwrite(DMA_CTL_ACAP_EN | | |
264 | DMA_CTL_RISC_EN | | |
265 | DMA_CTL_FIFO_EN | | |
266 | DMA_CTL_DA_ES2 | | |
267 | ((bta->bits == 8) ? DMA_CTL_DA_SBR : 0) | | |
268 | (bta->gain[bta->source] << 28) | | |
269 | (bta->source << 24) | | |
270 | (bta->decimation << 8), | |
271 | REG_GPIO_DMA_CTL); | |
272 | } else { | |
273 | btwrite(DMA_CTL_ACAP_EN | | |
274 | DMA_CTL_RISC_EN | | |
275 | DMA_CTL_FIFO_EN | | |
276 | DMA_CTL_DA_ES2 | | |
277 | DMA_CTL_A_PWRDN | | |
278 | (1 << 6) | | |
279 | ((bta->bits == 8) ? DMA_CTL_DA_SBR : 0) | | |
280 | (bta->gain[bta->source] << 28) | | |
281 | (bta->source << 24) | | |
282 | (bta->decimation << 8), | |
283 | REG_GPIO_DMA_CTL); | |
284 | } | |
285 | bta->dma_block = 0; | |
286 | bta->read_offset = 0; | |
287 | bta->read_count = 0; | |
288 | bta->recording = 1; | |
289 | if (debug) | |
290 | printk(KERN_DEBUG "btaudio: recording started\n"); | |
291 | return 0; | |
292 | } | |
293 | ||
294 | static void stop_recording(struct btaudio *bta) | |
295 | { | |
296 | btand(~15, REG_GPIO_DMA_CTL); | |
297 | bta->recording = 0; | |
298 | if (debug) | |
299 | printk(KERN_DEBUG "btaudio: recording stopped\n"); | |
300 | } | |
301 | ||
302 | ||
303 | /* -------------------------------------------------------------- */ | |
304 | ||
305 | static int btaudio_mixer_open(struct inode *inode, struct file *file) | |
306 | { | |
307 | int minor = iminor(inode); | |
308 | struct btaudio *bta; | |
309 | ||
310 | for (bta = btaudios; bta != NULL; bta = bta->next) | |
311 | if (bta->mixer_dev == minor) | |
312 | break; | |
313 | if (NULL == bta) | |
314 | return -ENODEV; | |
315 | ||
316 | if (debug) | |
317 | printk("btaudio: open mixer [%d]\n",minor); | |
318 | file->private_data = bta; | |
319 | return 0; | |
320 | } | |
321 | ||
322 | static int btaudio_mixer_release(struct inode *inode, struct file *file) | |
323 | { | |
324 | return 0; | |
325 | } | |
326 | ||
327 | static int btaudio_mixer_ioctl(struct inode *inode, struct file *file, | |
328 | unsigned int cmd, unsigned long arg) | |
329 | { | |
330 | struct btaudio *bta = file->private_data; | |
331 | int ret,val=0,i=0; | |
332 | void __user *argp = (void __user *)arg; | |
333 | ||
334 | if (cmd == SOUND_MIXER_INFO) { | |
335 | mixer_info info; | |
336 | memset(&info,0,sizeof(info)); | |
337 | strlcpy(info.id,"bt878",sizeof(info.id)); | |
338 | strlcpy(info.name,"Brooktree Bt878 audio",sizeof(info.name)); | |
339 | info.modify_counter = bta->mixcount; | |
340 | if (copy_to_user(argp, &info, sizeof(info))) | |
341 | return -EFAULT; | |
342 | return 0; | |
343 | } | |
344 | if (cmd == SOUND_OLD_MIXER_INFO) { | |
345 | _old_mixer_info info; | |
346 | memset(&info,0,sizeof(info)); | |
347 | strlcpy(info.id,"bt878",sizeof(info.id)-1); | |
348 | strlcpy(info.name,"Brooktree Bt878 audio",sizeof(info.name)); | |
349 | if (copy_to_user(argp, &info, sizeof(info))) | |
350 | return -EFAULT; | |
351 | return 0; | |
352 | } | |
353 | if (cmd == OSS_GETVERSION) | |
354 | return put_user(SOUND_VERSION, (int __user *)argp); | |
355 | ||
356 | /* read */ | |
357 | if (_SIOC_DIR(cmd) & _SIOC_WRITE) | |
358 | if (get_user(val, (int __user *)argp)) | |
359 | return -EFAULT; | |
360 | ||
361 | switch (cmd) { | |
362 | case MIXER_READ(SOUND_MIXER_CAPS): | |
363 | ret = SOUND_CAP_EXCL_INPUT; | |
364 | break; | |
365 | case MIXER_READ(SOUND_MIXER_STEREODEVS): | |
366 | ret = 0; | |
367 | break; | |
368 | case MIXER_READ(SOUND_MIXER_RECMASK): | |
369 | case MIXER_READ(SOUND_MIXER_DEVMASK): | |
370 | ret = SOUND_MASK_LINE1|SOUND_MASK_LINE2|SOUND_MASK_LINE3; | |
371 | break; | |
372 | ||
373 | case MIXER_WRITE(SOUND_MIXER_RECSRC): | |
374 | if (val & SOUND_MASK_LINE1 && bta->source != 0) | |
375 | bta->source = 0; | |
376 | else if (val & SOUND_MASK_LINE2 && bta->source != 1) | |
377 | bta->source = 1; | |
378 | else if (val & SOUND_MASK_LINE3 && bta->source != 2) | |
379 | bta->source = 2; | |
380 | btaor((bta->gain[bta->source] << 28) | | |
381 | (bta->source << 24), | |
382 | 0x0cffffff, REG_GPIO_DMA_CTL); | |
383 | case MIXER_READ(SOUND_MIXER_RECSRC): | |
384 | switch (bta->source) { | |
385 | case 0: ret = SOUND_MASK_LINE1; break; | |
386 | case 1: ret = SOUND_MASK_LINE2; break; | |
387 | case 2: ret = SOUND_MASK_LINE3; break; | |
388 | default: ret = 0; | |
389 | } | |
390 | break; | |
391 | ||
392 | case MIXER_WRITE(SOUND_MIXER_LINE1): | |
393 | case MIXER_WRITE(SOUND_MIXER_LINE2): | |
394 | case MIXER_WRITE(SOUND_MIXER_LINE3): | |
395 | if (MIXER_WRITE(SOUND_MIXER_LINE1) == cmd) | |
396 | i = 0; | |
397 | if (MIXER_WRITE(SOUND_MIXER_LINE2) == cmd) | |
398 | i = 1; | |
399 | if (MIXER_WRITE(SOUND_MIXER_LINE3) == cmd) | |
400 | i = 2; | |
401 | bta->gain[i] = (val & 0xff) * 15 / 100; | |
402 | if (bta->gain[i] > 15) bta->gain[i] = 15; | |
403 | if (bta->gain[i] < 0) bta->gain[i] = 0; | |
404 | if (i == bta->source) | |
405 | btaor((bta->gain[bta->source]<<28), | |
406 | 0x0fffffff, REG_GPIO_DMA_CTL); | |
407 | ret = bta->gain[i] * 100 / 15; | |
408 | ret |= ret << 8; | |
409 | break; | |
410 | ||
411 | case MIXER_READ(SOUND_MIXER_LINE1): | |
412 | case MIXER_READ(SOUND_MIXER_LINE2): | |
413 | case MIXER_READ(SOUND_MIXER_LINE3): | |
414 | if (MIXER_READ(SOUND_MIXER_LINE1) == cmd) | |
415 | i = 0; | |
416 | if (MIXER_READ(SOUND_MIXER_LINE2) == cmd) | |
417 | i = 1; | |
418 | if (MIXER_READ(SOUND_MIXER_LINE3) == cmd) | |
419 | i = 2; | |
420 | ret = bta->gain[i] * 100 / 15; | |
421 | ret |= ret << 8; | |
422 | break; | |
423 | ||
424 | default: | |
425 | return -EINVAL; | |
426 | } | |
427 | if (put_user(ret, (int __user *)argp)) | |
428 | return -EFAULT; | |
429 | return 0; | |
430 | } | |
431 | ||
432 | static struct file_operations btaudio_mixer_fops = { | |
433 | .owner = THIS_MODULE, | |
434 | .llseek = no_llseek, | |
435 | .open = btaudio_mixer_open, | |
436 | .release = btaudio_mixer_release, | |
437 | .ioctl = btaudio_mixer_ioctl, | |
438 | }; | |
439 | ||
440 | /* -------------------------------------------------------------- */ | |
441 | ||
442 | static int btaudio_dsp_open(struct inode *inode, struct file *file, | |
443 | struct btaudio *bta, int analog) | |
444 | { | |
910f5d20 | 445 | mutex_lock(&bta->lock); |
1da177e4 LT |
446 | if (bta->users) |
447 | goto busy; | |
448 | bta->users++; | |
449 | file->private_data = bta; | |
450 | ||
451 | bta->analog = analog; | |
452 | bta->dma_block = 0; | |
453 | bta->read_offset = 0; | |
454 | bta->read_count = 0; | |
455 | bta->sampleshift = 0; | |
456 | ||
910f5d20 | 457 | mutex_unlock(&bta->lock); |
1da177e4 LT |
458 | return 0; |
459 | ||
460 | busy: | |
910f5d20 | 461 | mutex_unlock(&bta->lock); |
1da177e4 LT |
462 | return -EBUSY; |
463 | } | |
464 | ||
465 | static int btaudio_dsp_open_digital(struct inode *inode, struct file *file) | |
466 | { | |
467 | int minor = iminor(inode); | |
468 | struct btaudio *bta; | |
469 | ||
470 | for (bta = btaudios; bta != NULL; bta = bta->next) | |
471 | if (bta->dsp_digital == minor) | |
472 | break; | |
473 | if (NULL == bta) | |
474 | return -ENODEV; | |
475 | ||
476 | if (debug) | |
477 | printk("btaudio: open digital dsp [%d]\n",minor); | |
478 | return btaudio_dsp_open(inode,file,bta,0); | |
479 | } | |
480 | ||
481 | static int btaudio_dsp_open_analog(struct inode *inode, struct file *file) | |
482 | { | |
483 | int minor = iminor(inode); | |
484 | struct btaudio *bta; | |
485 | ||
486 | for (bta = btaudios; bta != NULL; bta = bta->next) | |
487 | if (bta->dsp_analog == minor) | |
488 | break; | |
489 | if (NULL == bta) | |
490 | return -ENODEV; | |
491 | ||
492 | if (debug) | |
493 | printk("btaudio: open analog dsp [%d]\n",minor); | |
494 | return btaudio_dsp_open(inode,file,bta,1); | |
495 | } | |
496 | ||
497 | static int btaudio_dsp_release(struct inode *inode, struct file *file) | |
498 | { | |
499 | struct btaudio *bta = file->private_data; | |
500 | ||
910f5d20 | 501 | mutex_lock(&bta->lock); |
1da177e4 LT |
502 | if (bta->recording) |
503 | stop_recording(bta); | |
504 | bta->users--; | |
910f5d20 | 505 | mutex_unlock(&bta->lock); |
1da177e4 LT |
506 | return 0; |
507 | } | |
508 | ||
509 | static ssize_t btaudio_dsp_read(struct file *file, char __user *buffer, | |
510 | size_t swcount, loff_t *ppos) | |
511 | { | |
512 | struct btaudio *bta = file->private_data; | |
513 | int hwcount = swcount << bta->sampleshift; | |
514 | int nsrc, ndst, err, ret = 0; | |
515 | DECLARE_WAITQUEUE(wait, current); | |
516 | ||
517 | add_wait_queue(&bta->readq, &wait); | |
910f5d20 | 518 | mutex_lock(&bta->lock); |
1da177e4 LT |
519 | while (swcount > 0) { |
520 | if (0 == bta->read_count) { | |
521 | if (!bta->recording) { | |
522 | if (0 != (err = start_recording(bta))) { | |
523 | if (0 == ret) | |
524 | ret = err; | |
525 | break; | |
526 | } | |
527 | } | |
528 | if (file->f_flags & O_NONBLOCK) { | |
529 | if (0 == ret) | |
530 | ret = -EAGAIN; | |
531 | break; | |
532 | } | |
910f5d20 | 533 | mutex_unlock(&bta->lock); |
1da177e4 LT |
534 | current->state = TASK_INTERRUPTIBLE; |
535 | schedule(); | |
910f5d20 | 536 | mutex_lock(&bta->lock); |
1da177e4 LT |
537 | if(signal_pending(current)) { |
538 | if (0 == ret) | |
539 | ret = -EINTR; | |
540 | break; | |
541 | } | |
542 | } | |
543 | nsrc = (bta->read_count < hwcount) ? bta->read_count : hwcount; | |
544 | if (nsrc > bta->buf_size - bta->read_offset) | |
545 | nsrc = bta->buf_size - bta->read_offset; | |
546 | ndst = nsrc >> bta->sampleshift; | |
547 | ||
548 | if ((bta->analog && 0 == bta->sampleshift) || | |
549 | (!bta->analog && 2 == bta->channels)) { | |
550 | /* just copy */ | |
551 | if (copy_to_user(buffer + ret, bta->buf_cpu + bta->read_offset, nsrc)) { | |
552 | if (0 == ret) | |
553 | ret = -EFAULT; | |
554 | break; | |
555 | } | |
556 | ||
557 | } else if (!bta->analog) { | |
558 | /* stereo => mono (digital audio) */ | |
559 | __s16 *src = (__s16*)(bta->buf_cpu + bta->read_offset); | |
560 | __s16 __user *dst = (__s16 __user *)(buffer + ret); | |
561 | __s16 avg; | |
562 | int n = ndst>>1; | |
563 | if (!access_ok(VERIFY_WRITE, dst, ndst)) { | |
564 | if (0 == ret) | |
565 | ret = -EFAULT; | |
566 | break; | |
567 | } | |
568 | for (; n; n--, dst++) { | |
569 | avg = (__s16)le16_to_cpu(*src) / 2; src++; | |
570 | avg += (__s16)le16_to_cpu(*src) / 2; src++; | |
571 | __put_user(cpu_to_le16(avg),dst); | |
572 | } | |
573 | ||
574 | } else if (8 == bta->bits) { | |
575 | /* copy + byte downsampling (audio A/D) */ | |
576 | __u8 *src = bta->buf_cpu + bta->read_offset; | |
577 | __u8 __user *dst = buffer + ret; | |
578 | int n = ndst; | |
579 | if (!access_ok(VERIFY_WRITE, dst, ndst)) { | |
580 | if (0 == ret) | |
581 | ret = -EFAULT; | |
582 | break; | |
583 | } | |
584 | for (; n; n--, src += (1 << bta->sampleshift), dst++) | |
585 | __put_user(*src, dst); | |
586 | ||
587 | } else { | |
588 | /* copy + word downsampling (audio A/D) */ | |
589 | __u16 *src = (__u16*)(bta->buf_cpu + bta->read_offset); | |
590 | __u16 __user *dst = (__u16 __user *)(buffer + ret); | |
591 | int n = ndst>>1; | |
592 | if (!access_ok(VERIFY_WRITE,dst,ndst)) { | |
593 | if (0 == ret) | |
594 | ret = -EFAULT; | |
595 | break; | |
596 | } | |
597 | for (; n; n--, src += (1 << bta->sampleshift), dst++) | |
598 | __put_user(*src, dst); | |
599 | } | |
600 | ||
601 | ret += ndst; | |
602 | swcount -= ndst; | |
603 | hwcount -= nsrc; | |
604 | bta->read_count -= nsrc; | |
605 | bta->read_offset += nsrc; | |
606 | if (bta->read_offset == bta->buf_size) | |
607 | bta->read_offset = 0; | |
608 | } | |
910f5d20 | 609 | mutex_unlock(&bta->lock); |
1da177e4 LT |
610 | remove_wait_queue(&bta->readq, &wait); |
611 | current->state = TASK_RUNNING; | |
612 | return ret; | |
613 | } | |
614 | ||
615 | static ssize_t btaudio_dsp_write(struct file *file, const char __user *buffer, | |
616 | size_t count, loff_t *ppos) | |
617 | { | |
618 | return -EINVAL; | |
619 | } | |
620 | ||
621 | static int btaudio_dsp_ioctl(struct inode *inode, struct file *file, | |
622 | unsigned int cmd, unsigned long arg) | |
623 | { | |
624 | struct btaudio *bta = file->private_data; | |
625 | int s, i, ret, val = 0; | |
626 | void __user *argp = (void __user *)arg; | |
627 | int __user *p = argp; | |
628 | ||
629 | switch (cmd) { | |
630 | case OSS_GETVERSION: | |
631 | return put_user(SOUND_VERSION, p); | |
632 | case SNDCTL_DSP_GETCAPS: | |
633 | return 0; | |
634 | ||
635 | case SNDCTL_DSP_SPEED: | |
636 | if (get_user(val, p)) | |
637 | return -EFAULT; | |
638 | if (bta->analog) { | |
639 | for (s = 0; s < 16; s++) | |
640 | if (val << s >= HWBASE_AD*4/15) | |
641 | break; | |
642 | for (i = 15; i >= 5; i--) | |
643 | if (val << s <= HWBASE_AD*4/i) | |
644 | break; | |
645 | bta->sampleshift = s; | |
646 | bta->decimation = i; | |
647 | if (debug) | |
648 | printk(KERN_DEBUG "btaudio: rate: req=%d " | |
649 | "dec=%d shift=%d hwrate=%d swrate=%d\n", | |
650 | val,i,s,(HWBASE_AD*4/i),(HWBASE_AD*4/i)>>s); | |
651 | } else { | |
652 | bta->sampleshift = (bta->channels == 2) ? 0 : 1; | |
653 | bta->decimation = 0; | |
654 | } | |
655 | if (bta->recording) { | |
910f5d20 | 656 | mutex_lock(&bta->lock); |
1da177e4 LT |
657 | stop_recording(bta); |
658 | start_recording(bta); | |
910f5d20 | 659 | mutex_unlock(&bta->lock); |
1da177e4 LT |
660 | } |
661 | /* fall through */ | |
662 | case SOUND_PCM_READ_RATE: | |
663 | if (bta->analog) { | |
664 | return put_user(HWBASE_AD*4/bta->decimation>>bta->sampleshift, p); | |
665 | } else { | |
666 | return put_user(bta->rate, p); | |
667 | } | |
668 | ||
669 | case SNDCTL_DSP_STEREO: | |
670 | if (!bta->analog) { | |
671 | if (get_user(val, p)) | |
672 | return -EFAULT; | |
673 | bta->channels = (val > 0) ? 2 : 1; | |
674 | bta->sampleshift = (bta->channels == 2) ? 0 : 1; | |
675 | if (debug) | |
676 | printk(KERN_INFO | |
677 | "btaudio: stereo=%d channels=%d\n", | |
678 | val,bta->channels); | |
679 | } else { | |
680 | if (val == 1) | |
681 | return -EFAULT; | |
682 | else { | |
683 | bta->channels = 1; | |
684 | if (debug) | |
685 | printk(KERN_INFO | |
686 | "btaudio: stereo=0 channels=1\n"); | |
687 | } | |
688 | } | |
689 | return put_user((bta->channels)-1, p); | |
690 | ||
691 | case SNDCTL_DSP_CHANNELS: | |
692 | if (!bta->analog) { | |
693 | if (get_user(val, p)) | |
694 | return -EFAULT; | |
695 | bta->channels = (val > 1) ? 2 : 1; | |
696 | bta->sampleshift = (bta->channels == 2) ? 0 : 1; | |
697 | if (debug) | |
698 | printk(KERN_DEBUG | |
699 | "btaudio: val=%d channels=%d\n", | |
700 | val,bta->channels); | |
701 | } | |
702 | /* fall through */ | |
703 | case SOUND_PCM_READ_CHANNELS: | |
704 | return put_user(bta->channels, p); | |
705 | ||
706 | case SNDCTL_DSP_GETFMTS: /* Returns a mask */ | |
707 | if (bta->analog) | |
708 | return put_user(AFMT_S16_LE|AFMT_S8, p); | |
709 | else | |
710 | return put_user(AFMT_S16_LE, p); | |
711 | ||
712 | case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/ | |
713 | if (get_user(val, p)) | |
714 | return -EFAULT; | |
715 | if (val != AFMT_QUERY) { | |
716 | if (bta->analog) | |
717 | bta->bits = (val == AFMT_S8) ? 8 : 16; | |
718 | else | |
719 | bta->bits = 16; | |
720 | if (bta->recording) { | |
910f5d20 | 721 | mutex_lock(&bta->lock); |
1da177e4 LT |
722 | stop_recording(bta); |
723 | start_recording(bta); | |
910f5d20 | 724 | mutex_unlock(&bta->lock); |
1da177e4 LT |
725 | } |
726 | } | |
727 | if (debug) | |
728 | printk(KERN_DEBUG "btaudio: fmt: bits=%d\n",bta->bits); | |
729 | return put_user((bta->bits==16) ? AFMT_S16_LE : AFMT_S8, | |
730 | p); | |
731 | break; | |
732 | case SOUND_PCM_READ_BITS: | |
733 | return put_user(bta->bits, p); | |
734 | ||
735 | case SNDCTL_DSP_NONBLOCK: | |
736 | file->f_flags |= O_NONBLOCK; | |
737 | return 0; | |
738 | ||
739 | case SNDCTL_DSP_RESET: | |
740 | if (bta->recording) { | |
910f5d20 | 741 | mutex_lock(&bta->lock); |
1da177e4 | 742 | stop_recording(bta); |
910f5d20 | 743 | mutex_unlock(&bta->lock); |
1da177e4 LT |
744 | } |
745 | return 0; | |
746 | case SNDCTL_DSP_GETBLKSIZE: | |
747 | if (!bta->recording) { | |
748 | if (0 != (ret = alloc_buffer(bta))) | |
749 | return ret; | |
750 | if (0 != (ret = make_risc(bta))) | |
751 | return ret; | |
752 | } | |
753 | return put_user(bta->block_bytes>>bta->sampleshift,p); | |
754 | ||
755 | case SNDCTL_DSP_SYNC: | |
756 | /* NOP */ | |
757 | return 0; | |
758 | case SNDCTL_DSP_GETISPACE: | |
759 | { | |
760 | audio_buf_info info; | |
761 | if (!bta->recording) | |
762 | return -EINVAL; | |
763 | info.fragsize = bta->block_bytes>>bta->sampleshift; | |
764 | info.fragstotal = bta->block_count; | |
765 | info.bytes = bta->read_count; | |
766 | info.fragments = info.bytes / info.fragsize; | |
767 | if (debug) | |
768 | printk(KERN_DEBUG "btaudio: SNDCTL_DSP_GETISPACE " | |
769 | "returns %d/%d/%d/%d\n", | |
770 | info.fragsize, info.fragstotal, | |
771 | info.bytes, info.fragments); | |
772 | if (copy_to_user(argp, &info, sizeof(info))) | |
773 | return -EFAULT; | |
774 | return 0; | |
775 | } | |
776 | #if 0 /* TODO */ | |
777 | case SNDCTL_DSP_GETTRIGGER: | |
778 | case SNDCTL_DSP_SETTRIGGER: | |
779 | case SNDCTL_DSP_SETFRAGMENT: | |
780 | #endif | |
781 | default: | |
782 | return -EINVAL; | |
783 | } | |
784 | } | |
785 | ||
786 | static unsigned int btaudio_dsp_poll(struct file *file, struct poll_table_struct *wait) | |
787 | { | |
788 | struct btaudio *bta = file->private_data; | |
789 | unsigned int mask = 0; | |
790 | ||
791 | poll_wait(file, &bta->readq, wait); | |
792 | ||
793 | if (0 != bta->read_count) | |
794 | mask |= (POLLIN | POLLRDNORM); | |
795 | ||
796 | return mask; | |
797 | } | |
798 | ||
799 | static struct file_operations btaudio_digital_dsp_fops = { | |
800 | .owner = THIS_MODULE, | |
801 | .llseek = no_llseek, | |
802 | .open = btaudio_dsp_open_digital, | |
803 | .release = btaudio_dsp_release, | |
804 | .read = btaudio_dsp_read, | |
805 | .write = btaudio_dsp_write, | |
806 | .ioctl = btaudio_dsp_ioctl, | |
807 | .poll = btaudio_dsp_poll, | |
808 | }; | |
809 | ||
810 | static struct file_operations btaudio_analog_dsp_fops = { | |
811 | .owner = THIS_MODULE, | |
812 | .llseek = no_llseek, | |
813 | .open = btaudio_dsp_open_analog, | |
814 | .release = btaudio_dsp_release, | |
815 | .read = btaudio_dsp_read, | |
816 | .write = btaudio_dsp_write, | |
817 | .ioctl = btaudio_dsp_ioctl, | |
818 | .poll = btaudio_dsp_poll, | |
819 | }; | |
820 | ||
821 | /* -------------------------------------------------------------- */ | |
822 | ||
823 | static char *irq_name[] = { "", "", "", "OFLOW", "", "", "", "", "", "", "", | |
824 | "RISCI", "FBUS", "FTRGT", "FDSR", "PPERR", | |
825 | "RIPERR", "PABORT", "OCERR", "SCERR" }; | |
826 | ||
7d12e780 | 827 | static irqreturn_t btaudio_irq(int irq, void *dev_id) |
1da177e4 LT |
828 | { |
829 | int count = 0; | |
830 | u32 stat,astat; | |
831 | struct btaudio *bta = dev_id; | |
832 | int handled = 0; | |
833 | ||
834 | for (;;) { | |
835 | count++; | |
836 | stat = btread(REG_INT_STAT); | |
837 | astat = stat & btread(REG_INT_MASK); | |
838 | if (!astat) | |
839 | return IRQ_RETVAL(handled); | |
840 | handled = 1; | |
841 | btwrite(astat,REG_INT_STAT); | |
842 | ||
843 | if (irq_debug) { | |
844 | int i; | |
845 | printk(KERN_DEBUG "btaudio: irq loop=%d risc=%x, bits:", | |
846 | count, stat>>28); | |
847 | for (i = 0; i < (sizeof(irq_name)/sizeof(char*)); i++) { | |
848 | if (stat & (1 << i)) | |
849 | printk(" %s",irq_name[i]); | |
850 | if (astat & (1 << i)) | |
851 | printk("*"); | |
852 | } | |
853 | printk("\n"); | |
854 | } | |
855 | if (stat & IRQ_RISCI) { | |
856 | int blocks; | |
857 | blocks = (stat >> 28) - bta->dma_block; | |
858 | if (blocks < 0) | |
859 | blocks += bta->block_count; | |
860 | bta->dma_block = stat >> 28; | |
861 | if (bta->read_count + 2*bta->block_bytes > bta->buf_size) { | |
862 | stop_recording(bta); | |
863 | printk(KERN_INFO "btaudio: buffer overrun\n"); | |
864 | } | |
865 | if (blocks > 0) { | |
866 | bta->read_count += blocks * bta->block_bytes; | |
867 | wake_up_interruptible(&bta->readq); | |
868 | } | |
869 | } | |
870 | if (count > 10) { | |
871 | printk(KERN_WARNING | |
872 | "btaudio: Oops - irq mask cleared\n"); | |
873 | btwrite(0, REG_INT_MASK); | |
874 | } | |
875 | } | |
876 | return IRQ_NONE; | |
877 | } | |
878 | ||
879 | /* -------------------------------------------------------------- */ | |
880 | ||
881 | static unsigned int dsp1 = -1; | |
882 | static unsigned int dsp2 = -1; | |
883 | static unsigned int mixer = -1; | |
884 | static int latency = -1; | |
885 | static int digital = 1; | |
886 | static int analog = 1; | |
887 | static int rate; | |
888 | ||
889 | #define BTA_OSPREY200 1 | |
890 | ||
891 | static struct cardinfo cards[] = { | |
892 | [0] = { | |
893 | .name = "default", | |
894 | .rate = 32000, | |
895 | }, | |
896 | [BTA_OSPREY200] = { | |
897 | .name = "Osprey 200", | |
898 | .rate = 44100, | |
899 | }, | |
900 | }; | |
901 | ||
902 | static int __devinit btaudio_probe(struct pci_dev *pci_dev, | |
903 | const struct pci_device_id *pci_id) | |
904 | { | |
905 | struct btaudio *bta; | |
906 | struct cardinfo *card = &cards[pci_id->driver_data]; | |
907 | unsigned char revision,lat; | |
908 | int rc = -EBUSY; | |
909 | ||
910 | if (pci_enable_device(pci_dev)) | |
911 | return -EIO; | |
912 | if (!request_mem_region(pci_resource_start(pci_dev,0), | |
913 | pci_resource_len(pci_dev,0), | |
914 | "btaudio")) { | |
915 | return -EBUSY; | |
916 | } | |
917 | ||
918 | bta = kmalloc(sizeof(*bta),GFP_ATOMIC); | |
919 | if (!bta) { | |
920 | rc = -ENOMEM; | |
921 | goto fail0; | |
922 | } | |
923 | memset(bta,0,sizeof(*bta)); | |
924 | ||
925 | bta->pci = pci_dev; | |
926 | bta->irq = pci_dev->irq; | |
927 | bta->mem = pci_resource_start(pci_dev,0); | |
928 | bta->mmio = ioremap(pci_resource_start(pci_dev,0), | |
929 | pci_resource_len(pci_dev,0)); | |
930 | ||
931 | bta->source = 1; | |
932 | bta->bits = 8; | |
933 | bta->channels = 1; | |
934 | if (bta->analog) { | |
935 | bta->decimation = 15; | |
936 | } else { | |
937 | bta->decimation = 0; | |
938 | bta->sampleshift = 1; | |
939 | } | |
940 | ||
941 | /* sample rate */ | |
942 | bta->rate = card->rate; | |
943 | if (rate) | |
944 | bta->rate = rate; | |
945 | ||
910f5d20 | 946 | mutex_init(&bta->lock); |
1da177e4 LT |
947 | init_waitqueue_head(&bta->readq); |
948 | ||
949 | if (-1 != latency) { | |
950 | printk(KERN_INFO "btaudio: setting pci latency timer to %d\n", | |
951 | latency); | |
952 | pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, latency); | |
953 | } | |
954 | pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &revision); | |
955 | pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &lat); | |
956 | printk(KERN_INFO "btaudio: Bt%x (rev %d) at %02x:%02x.%x, ", | |
957 | pci_dev->device,revision,pci_dev->bus->number, | |
958 | PCI_SLOT(pci_dev->devfn),PCI_FUNC(pci_dev->devfn)); | |
959 | printk("irq: %d, latency: %d, mmio: 0x%lx\n", | |
960 | bta->irq, lat, bta->mem); | |
961 | printk("btaudio: using card config \"%s\"\n", card->name); | |
962 | ||
963 | /* init hw */ | |
964 | btwrite(0, REG_GPIO_DMA_CTL); | |
965 | btwrite(0, REG_INT_MASK); | |
966 | btwrite(~0U, REG_INT_STAT); | |
967 | pci_set_master(pci_dev); | |
968 | ||
65ca68b3 | 969 | if ((rc = request_irq(bta->irq, btaudio_irq, IRQF_SHARED|IRQF_DISABLED, |
1da177e4 LT |
970 | "btaudio",(void *)bta)) < 0) { |
971 | printk(KERN_WARNING | |
972 | "btaudio: can't request irq (rc=%d)\n",rc); | |
973 | goto fail1; | |
974 | } | |
975 | ||
976 | /* register devices */ | |
977 | if (digital) { | |
978 | rc = bta->dsp_digital = | |
979 | register_sound_dsp(&btaudio_digital_dsp_fops,dsp1); | |
980 | if (rc < 0) { | |
981 | printk(KERN_WARNING | |
982 | "btaudio: can't register digital dsp (rc=%d)\n",rc); | |
983 | goto fail2; | |
984 | } | |
985 | printk(KERN_INFO "btaudio: registered device dsp%d [digital]\n", | |
986 | bta->dsp_digital >> 4); | |
987 | } | |
988 | if (analog) { | |
989 | rc = bta->dsp_analog = | |
990 | register_sound_dsp(&btaudio_analog_dsp_fops,dsp2); | |
991 | if (rc < 0) { | |
992 | printk(KERN_WARNING | |
993 | "btaudio: can't register analog dsp (rc=%d)\n",rc); | |
994 | goto fail3; | |
995 | } | |
996 | printk(KERN_INFO "btaudio: registered device dsp%d [analog]\n", | |
997 | bta->dsp_analog >> 4); | |
998 | rc = bta->mixer_dev = register_sound_mixer(&btaudio_mixer_fops,mixer); | |
999 | if (rc < 0) { | |
1000 | printk(KERN_WARNING | |
1001 | "btaudio: can't register mixer (rc=%d)\n",rc); | |
1002 | goto fail4; | |
1003 | } | |
1004 | printk(KERN_INFO "btaudio: registered device mixer%d\n", | |
1005 | bta->mixer_dev >> 4); | |
1006 | } | |
1007 | ||
1008 | /* hook into linked list */ | |
1009 | bta->next = btaudios; | |
1010 | btaudios = bta; | |
1011 | ||
1012 | pci_set_drvdata(pci_dev,bta); | |
1013 | return 0; | |
1014 | ||
1015 | fail4: | |
1016 | unregister_sound_dsp(bta->dsp_analog); | |
1017 | fail3: | |
1018 | if (digital) | |
1019 | unregister_sound_dsp(bta->dsp_digital); | |
1020 | fail2: | |
1021 | free_irq(bta->irq,bta); | |
1022 | fail1: | |
b9d85b08 | 1023 | iounmap(bta->mmio); |
1da177e4 LT |
1024 | kfree(bta); |
1025 | fail0: | |
1026 | release_mem_region(pci_resource_start(pci_dev,0), | |
1027 | pci_resource_len(pci_dev,0)); | |
1028 | return rc; | |
1029 | } | |
1030 | ||
1031 | static void __devexit btaudio_remove(struct pci_dev *pci_dev) | |
1032 | { | |
1033 | struct btaudio *bta = pci_get_drvdata(pci_dev); | |
1034 | struct btaudio *walk; | |
1035 | ||
1036 | /* turn off all DMA / IRQs */ | |
1037 | btand(~15, REG_GPIO_DMA_CTL); | |
1038 | btwrite(0, REG_INT_MASK); | |
1039 | btwrite(~0U, REG_INT_STAT); | |
1040 | ||
1041 | /* unregister devices */ | |
1042 | if (digital) { | |
1043 | unregister_sound_dsp(bta->dsp_digital); | |
1044 | } | |
1045 | if (analog) { | |
1046 | unregister_sound_dsp(bta->dsp_analog); | |
1047 | unregister_sound_mixer(bta->mixer_dev); | |
1048 | } | |
1049 | ||
1050 | /* free resources */ | |
1051 | free_buffer(bta); | |
1052 | free_irq(bta->irq,bta); | |
1053 | release_mem_region(pci_resource_start(pci_dev,0), | |
1054 | pci_resource_len(pci_dev,0)); | |
b9d85b08 | 1055 | iounmap(bta->mmio); |
1da177e4 LT |
1056 | |
1057 | /* remove from linked list */ | |
1058 | if (bta == btaudios) { | |
1059 | btaudios = NULL; | |
1060 | } else { | |
1061 | for (walk = btaudios; walk->next != bta; walk = walk->next) | |
1062 | ; /* if (NULL == walk->next) BUG(); */ | |
1063 | walk->next = bta->next; | |
1064 | } | |
1065 | ||
1066 | pci_set_drvdata(pci_dev, NULL); | |
1067 | kfree(bta); | |
1068 | return; | |
1069 | } | |
1070 | ||
1071 | /* -------------------------------------------------------------- */ | |
1072 | ||
1073 | static struct pci_device_id btaudio_pci_tbl[] = { | |
1074 | { | |
1075 | .vendor = PCI_VENDOR_ID_BROOKTREE, | |
1076 | .device = 0x0878, | |
1077 | .subvendor = 0x0070, | |
1078 | .subdevice = 0xff01, | |
1079 | .driver_data = BTA_OSPREY200, | |
1080 | },{ | |
1081 | .vendor = PCI_VENDOR_ID_BROOKTREE, | |
1082 | .device = 0x0878, | |
1083 | .subvendor = PCI_ANY_ID, | |
1084 | .subdevice = PCI_ANY_ID, | |
1085 | },{ | |
1086 | .vendor = PCI_VENDOR_ID_BROOKTREE, | |
1087 | .device = 0x0878, | |
1088 | .subvendor = PCI_ANY_ID, | |
1089 | .subdevice = PCI_ANY_ID, | |
1090 | },{ | |
1091 | /* --- end of list --- */ | |
1092 | } | |
1093 | }; | |
1094 | ||
1095 | static struct pci_driver btaudio_pci_driver = { | |
1096 | .name = "btaudio", | |
1097 | .id_table = btaudio_pci_tbl, | |
1098 | .probe = btaudio_probe, | |
1099 | .remove = __devexit_p(btaudio_remove), | |
1100 | }; | |
1101 | ||
1102 | static int btaudio_init_module(void) | |
1103 | { | |
1104 | printk(KERN_INFO "btaudio: driver version 0.7 loaded [%s%s%s]\n", | |
1105 | digital ? "digital" : "", | |
1106 | analog && digital ? "+" : "", | |
1107 | analog ? "analog" : ""); | |
46654728 | 1108 | return pci_register_driver(&btaudio_pci_driver); |
1da177e4 LT |
1109 | } |
1110 | ||
1111 | static void btaudio_cleanup_module(void) | |
1112 | { | |
1113 | pci_unregister_driver(&btaudio_pci_driver); | |
1114 | return; | |
1115 | } | |
1116 | ||
1117 | module_init(btaudio_init_module); | |
1118 | module_exit(btaudio_cleanup_module); | |
1119 | ||
1120 | module_param(dsp1, int, S_IRUGO); | |
1121 | module_param(dsp2, int, S_IRUGO); | |
1122 | module_param(mixer, int, S_IRUGO); | |
1123 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
1124 | module_param(irq_debug, int, S_IRUGO | S_IWUSR); | |
1125 | module_param(digital, int, S_IRUGO); | |
1126 | module_param(analog, int, S_IRUGO); | |
1127 | module_param(rate, int, S_IRUGO); | |
1128 | module_param(latency, int, S_IRUGO); | |
1129 | MODULE_PARM_DESC(latency,"pci latency timer"); | |
1130 | ||
1131 | MODULE_DEVICE_TABLE(pci, btaudio_pci_tbl); | |
1132 | MODULE_DESCRIPTION("bt878 audio dma driver"); | |
1133 | MODULE_AUTHOR("Gerd Knorr"); | |
1134 | MODULE_LICENSE("GPL"); | |
1135 | ||
1136 | /* | |
1137 | * Local variables: | |
1138 | * c-basic-offset: 8 | |
1139 | * End: | |
1140 | */ |