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mm, hugetlb: remove unnecessary lower bound on sysctl handlers"?
[linux/fpc-iii.git] / sound / pci / ad1889.c
blob1610c38337afe6887e02074f98446a6c18aadc6e
1 /* Analog Devices 1889 audio driver
2 *
3 * This is a driver for the AD1889 PCI audio chipset found
4 * on the HP PA-RISC [BCJ]-xxx0 workstations.
5 *
6 * Copyright (C) 2004-2005, Kyle McMartin <kyle@parisc-linux.org>
7 * Copyright (C) 2005, Thibaut Varene <varenet@parisc-linux.org>
8 * Based on the OSS AD1889 driver by Randolph Chung <tausq@debian.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License, version 2, as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 * TODO:
24 * Do we need to take care of CCS register?
25 * Maybe we could use finer grained locking (separate locks for pb/cap)?
26 * Wishlist:
27 * Control Interface (mixer) support
28 * Better AC97 support (VSR...)?
29 * PM support
30 * MIDI support
31 * Game Port support
32 * SG DMA support (this will need *a lot* of work)
33 */
34
35 #include <linux/init.h>
36 #include <linux/pci.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/slab.h>
39 #include <linux/interrupt.h>
40 #include <linux/compiler.h>
41 #include <linux/delay.h>
42 #include <linux/module.h>
43
44 #include <sound/core.h>
45 #include <sound/pcm.h>
46 #include <sound/initval.h>
47 #include <sound/ac97_codec.h>
48
49 #include <asm/io.h>
50
51 #include "ad1889.h"
52 #include "ac97/ac97_id.h"
53
54 #define AD1889_DRVVER "Version: 1.7"
55
56 MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>, Thibaut Varene <t-bone@parisc-linux.org>");
57 MODULE_DESCRIPTION("Analog Devices AD1889 ALSA sound driver");
58 MODULE_LICENSE("GPL");
59 MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1889}}");
60
61 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
62 module_param_array(index, int, NULL, 0444);
63 MODULE_PARM_DESC(index, "Index value for the AD1889 soundcard.");
64
65 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
66 module_param_array(id, charp, NULL, 0444);
67 MODULE_PARM_DESC(id, "ID string for the AD1889 soundcard.");
68
69 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
70 module_param_array(enable, bool, NULL, 0444);
71 MODULE_PARM_DESC(enable, "Enable AD1889 soundcard.");
72
73 static char *ac97_quirk[SNDRV_CARDS];
74 module_param_array(ac97_quirk, charp, NULL, 0444);
75 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
76
77 #define DEVNAME "ad1889"
78 #define PFX DEVNAME ": "
79
80 /* keep track of some hw registers */
81 struct ad1889_register_state {
82 u16 reg; /* reg setup */
83 u32 addr; /* dma base address */
84 unsigned long size; /* DMA buffer size */
85 };
86
87 struct snd_ad1889 {
88 struct snd_card *card;
89 struct pci_dev *pci;
90
91 int irq;
92 unsigned long bar;
93 void __iomem *iobase;
94
95 struct snd_ac97 *ac97;
96 struct snd_ac97_bus *ac97_bus;
97 struct snd_pcm *pcm;
98 struct snd_info_entry *proc;
99
100 struct snd_pcm_substream *psubs;
101 struct snd_pcm_substream *csubs;
102
103 /* playback register state */
104 struct ad1889_register_state wave;
105 struct ad1889_register_state ramc;
106
107 spinlock_t lock;
108 };
109
110 static inline u16
111 ad1889_readw(struct snd_ad1889 *chip, unsigned reg)
112 {
113 return readw(chip->iobase + reg);
114 }
115
116 static inline void
117 ad1889_writew(struct snd_ad1889 *chip, unsigned reg, u16 val)
118 {
119 writew(val, chip->iobase + reg);
120 }
121
122 static inline u32
123 ad1889_readl(struct snd_ad1889 *chip, unsigned reg)
124 {
125 return readl(chip->iobase + reg);
126 }
127
128 static inline void
129 ad1889_writel(struct snd_ad1889 *chip, unsigned reg, u32 val)
130 {
131 writel(val, chip->iobase + reg);
132 }
133
134 static inline void
135 ad1889_unmute(struct snd_ad1889 *chip)
136 {
137 u16 st;
138 st = ad1889_readw(chip, AD_DS_WADA) &
139 ~(AD_DS_WADA_RWAM | AD_DS_WADA_LWAM);
140 ad1889_writew(chip, AD_DS_WADA, st);
141 ad1889_readw(chip, AD_DS_WADA);
142 }
143
144 static inline void
145 ad1889_mute(struct snd_ad1889 *chip)
146 {
147 u16 st;
148 st = ad1889_readw(chip, AD_DS_WADA) | AD_DS_WADA_RWAM | AD_DS_WADA_LWAM;
149 ad1889_writew(chip, AD_DS_WADA, st);
150 ad1889_readw(chip, AD_DS_WADA);
151 }
152
153 static inline void
154 ad1889_load_adc_buffer_address(struct snd_ad1889 *chip, u32 address)
155 {
156 ad1889_writel(chip, AD_DMA_ADCBA, address);
157 ad1889_writel(chip, AD_DMA_ADCCA, address);
158 }
159
160 static inline void
161 ad1889_load_adc_buffer_count(struct snd_ad1889 *chip, u32 count)
162 {
163 ad1889_writel(chip, AD_DMA_ADCBC, count);
164 ad1889_writel(chip, AD_DMA_ADCCC, count);
165 }
166
167 static inline void
168 ad1889_load_adc_interrupt_count(struct snd_ad1889 *chip, u32 count)
169 {
170 ad1889_writel(chip, AD_DMA_ADCIB, count);
171 ad1889_writel(chip, AD_DMA_ADCIC, count);
172 }
173
174 static inline void
175 ad1889_load_wave_buffer_address(struct snd_ad1889 *chip, u32 address)
176 {
177 ad1889_writel(chip, AD_DMA_WAVBA, address);
178 ad1889_writel(chip, AD_DMA_WAVCA, address);
179 }
180
181 static inline void
182 ad1889_load_wave_buffer_count(struct snd_ad1889 *chip, u32 count)
183 {
184 ad1889_writel(chip, AD_DMA_WAVBC, count);
185 ad1889_writel(chip, AD_DMA_WAVCC, count);
186 }
187
188 static inline void
189 ad1889_load_wave_interrupt_count(struct snd_ad1889 *chip, u32 count)
190 {
191 ad1889_writel(chip, AD_DMA_WAVIB, count);
192 ad1889_writel(chip, AD_DMA_WAVIC, count);
193 }
194
195 static void
196 ad1889_channel_reset(struct snd_ad1889 *chip, unsigned int channel)
197 {
198 u16 reg;
199
200 if (channel & AD_CHAN_WAV) {
201 /* Disable wave channel */
202 reg = ad1889_readw(chip, AD_DS_WSMC) & ~AD_DS_WSMC_WAEN;
203 ad1889_writew(chip, AD_DS_WSMC, reg);
204 chip->wave.reg = reg;
205
206 /* disable IRQs */
207 reg = ad1889_readw(chip, AD_DMA_WAV);
208 reg &= AD_DMA_IM_DIS;
209 reg &= ~AD_DMA_LOOP;
210 ad1889_writew(chip, AD_DMA_WAV, reg);
211
212 /* clear IRQ and address counters and pointers */
213 ad1889_load_wave_buffer_address(chip, 0x0);
214 ad1889_load_wave_buffer_count(chip, 0x0);
215 ad1889_load_wave_interrupt_count(chip, 0x0);
216
217 /* flush */
218 ad1889_readw(chip, AD_DMA_WAV);
219 }
220
221 if (channel & AD_CHAN_ADC) {
222 /* Disable ADC channel */
223 reg = ad1889_readw(chip, AD_DS_RAMC) & ~AD_DS_RAMC_ADEN;
224 ad1889_writew(chip, AD_DS_RAMC, reg);
225 chip->ramc.reg = reg;
226
227 reg = ad1889_readw(chip, AD_DMA_ADC);
228 reg &= AD_DMA_IM_DIS;
229 reg &= ~AD_DMA_LOOP;
230 ad1889_writew(chip, AD_DMA_ADC, reg);
231
232 ad1889_load_adc_buffer_address(chip, 0x0);
233 ad1889_load_adc_buffer_count(chip, 0x0);
234 ad1889_load_adc_interrupt_count(chip, 0x0);
235
236 /* flush */
237 ad1889_readw(chip, AD_DMA_ADC);
238 }
239 }
240
241 static u16
242 snd_ad1889_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
243 {
244 struct snd_ad1889 *chip = ac97->private_data;
245 return ad1889_readw(chip, AD_AC97_BASE + reg);
246 }
247
248 static void
249 snd_ad1889_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val)
250 {
251 struct snd_ad1889 *chip = ac97->private_data;
252 ad1889_writew(chip, AD_AC97_BASE + reg, val);
253 }
254
255 static int
256 snd_ad1889_ac97_ready(struct snd_ad1889 *chip)
257 {
258 int retry = 400; /* average needs 352 msec */
259
260 while (!(ad1889_readw(chip, AD_AC97_ACIC) & AD_AC97_ACIC_ACRDY)
261 && --retry)
262 mdelay(1);
263 if (!retry) {
264 dev_err(chip->card->dev, "[%s] Link is not ready.\n",
265 __func__);
266 return -EIO;
267 }
268 dev_dbg(chip->card->dev, "[%s] ready after %d ms\n", __func__, 400 - retry);
269
270 return 0;
271 }
272
273 static int
274 snd_ad1889_hw_params(struct snd_pcm_substream *substream,
275 struct snd_pcm_hw_params *hw_params)
276 {
277 return snd_pcm_lib_malloc_pages(substream,
278 params_buffer_bytes(hw_params));
279 }
280
281 static int
282 snd_ad1889_hw_free(struct snd_pcm_substream *substream)
283 {
284 return snd_pcm_lib_free_pages(substream);
285 }
286
287 static struct snd_pcm_hardware snd_ad1889_playback_hw = {
288 .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
289 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
290 .formats = SNDRV_PCM_FMTBIT_S16_LE,
291 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
292 .rate_min = 8000, /* docs say 7000, but we're lazy */
293 .rate_max = 48000,
294 .channels_min = 1,
295 .channels_max = 2,
296 .buffer_bytes_max = BUFFER_BYTES_MAX,
297 .period_bytes_min = PERIOD_BYTES_MIN,
298 .period_bytes_max = PERIOD_BYTES_MAX,
299 .periods_min = PERIODS_MIN,
300 .periods_max = PERIODS_MAX,
301 /*.fifo_size = 0,*/
302 };
303
304 static struct snd_pcm_hardware snd_ad1889_capture_hw = {
305 .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
306 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
307 .formats = SNDRV_PCM_FMTBIT_S16_LE,
308 .rates = SNDRV_PCM_RATE_48000,
309 .rate_min = 48000, /* docs say we could to VSR, but we're lazy */
310 .rate_max = 48000,
311 .channels_min = 1,
312 .channels_max = 2,
313 .buffer_bytes_max = BUFFER_BYTES_MAX,
314 .period_bytes_min = PERIOD_BYTES_MIN,
315 .period_bytes_max = PERIOD_BYTES_MAX,
316 .periods_min = PERIODS_MIN,
317 .periods_max = PERIODS_MAX,
318 /*.fifo_size = 0,*/
319 };
320
321 static int
322 snd_ad1889_playback_open(struct snd_pcm_substream *ss)
323 {
324 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
325 struct snd_pcm_runtime *rt = ss->runtime;
326
327 chip->psubs = ss;
328 rt->hw = snd_ad1889_playback_hw;
329
330 return 0;
331 }
332
333 static int
334 snd_ad1889_capture_open(struct snd_pcm_substream *ss)
335 {
336 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
337 struct snd_pcm_runtime *rt = ss->runtime;
338
339 chip->csubs = ss;
340 rt->hw = snd_ad1889_capture_hw;
341
342 return 0;
343 }
344
345 static int
346 snd_ad1889_playback_close(struct snd_pcm_substream *ss)
347 {
348 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
349 chip->psubs = NULL;
350 return 0;
351 }
352
353 static int
354 snd_ad1889_capture_close(struct snd_pcm_substream *ss)
355 {
356 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
357 chip->csubs = NULL;
358 return 0;
359 }
360
361 static int
362 snd_ad1889_playback_prepare(struct snd_pcm_substream *ss)
363 {
364 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
365 struct snd_pcm_runtime *rt = ss->runtime;
366 unsigned int size = snd_pcm_lib_buffer_bytes(ss);
367 unsigned int count = snd_pcm_lib_period_bytes(ss);
368 u16 reg;
369
370 ad1889_channel_reset(chip, AD_CHAN_WAV);
371
372 reg = ad1889_readw(chip, AD_DS_WSMC);
373
374 /* Mask out 16-bit / Stereo */
375 reg &= ~(AD_DS_WSMC_WA16 | AD_DS_WSMC_WAST);
376
377 if (snd_pcm_format_width(rt->format) == 16)
378 reg |= AD_DS_WSMC_WA16;
379
380 if (rt->channels > 1)
381 reg |= AD_DS_WSMC_WAST;
382
383 /* let's make sure we don't clobber ourselves */
384 spin_lock_irq(&chip->lock);
385
386 chip->wave.size = size;
387 chip->wave.reg = reg;
388 chip->wave.addr = rt->dma_addr;
389
390 ad1889_writew(chip, AD_DS_WSMC, chip->wave.reg);
391
392 /* Set sample rates on the codec */
393 ad1889_writew(chip, AD_DS_WAS, rt->rate);
394
395 /* Set up DMA */
396 ad1889_load_wave_buffer_address(chip, chip->wave.addr);
397 ad1889_load_wave_buffer_count(chip, size);
398 ad1889_load_wave_interrupt_count(chip, count);
399
400 /* writes flush */
401 ad1889_readw(chip, AD_DS_WSMC);
402
403 spin_unlock_irq(&chip->lock);
404
405 dev_dbg(chip->card->dev,
406 "prepare playback: addr = 0x%x, count = %u, size = %u, reg = 0x%x, rate = %u\n",
407 chip->wave.addr, count, size, reg, rt->rate);
408 return 0;
409 }
410
411 static int
412 snd_ad1889_capture_prepare(struct snd_pcm_substream *ss)
413 {
414 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
415 struct snd_pcm_runtime *rt = ss->runtime;
416 unsigned int size = snd_pcm_lib_buffer_bytes(ss);
417 unsigned int count = snd_pcm_lib_period_bytes(ss);
418 u16 reg;
419
420 ad1889_channel_reset(chip, AD_CHAN_ADC);
421
422 reg = ad1889_readw(chip, AD_DS_RAMC);
423
424 /* Mask out 16-bit / Stereo */
425 reg &= ~(AD_DS_RAMC_AD16 | AD_DS_RAMC_ADST);
426
427 if (snd_pcm_format_width(rt->format) == 16)
428 reg |= AD_DS_RAMC_AD16;
429
430 if (rt->channels > 1)
431 reg |= AD_DS_RAMC_ADST;
432
433 /* let's make sure we don't clobber ourselves */
434 spin_lock_irq(&chip->lock);
435
436 chip->ramc.size = size;
437 chip->ramc.reg = reg;
438 chip->ramc.addr = rt->dma_addr;
439
440 ad1889_writew(chip, AD_DS_RAMC, chip->ramc.reg);
441
442 /* Set up DMA */
443 ad1889_load_adc_buffer_address(chip, chip->ramc.addr);
444 ad1889_load_adc_buffer_count(chip, size);
445 ad1889_load_adc_interrupt_count(chip, count);
446
447 /* writes flush */
448 ad1889_readw(chip, AD_DS_RAMC);
449
450 spin_unlock_irq(&chip->lock);
451
452 dev_dbg(chip->card->dev,
453 "prepare capture: addr = 0x%x, count = %u, size = %u, reg = 0x%x, rate = %u\n",
454 chip->ramc.addr, count, size, reg, rt->rate);
455 return 0;
456 }
457
458 /* this is called in atomic context with IRQ disabled.
459 Must be as fast as possible and not sleep.
460 DMA should be *triggered* by this call.
461 The WSMC "WAEN" bit triggers DMA Wave On/Off */
462 static int
463 snd_ad1889_playback_trigger(struct snd_pcm_substream *ss, int cmd)
464 {
465 u16 wsmc;
466 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
467
468 wsmc = ad1889_readw(chip, AD_DS_WSMC);
469
470 switch (cmd) {
471 case SNDRV_PCM_TRIGGER_START:
472 /* enable DMA loop & interrupts */
473 ad1889_writew(chip, AD_DMA_WAV, AD_DMA_LOOP | AD_DMA_IM_CNT);
474 wsmc |= AD_DS_WSMC_WAEN;
475 /* 1 to clear CHSS bit */
476 ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_WAVS);
477 ad1889_unmute(chip);
478 break;
479 case SNDRV_PCM_TRIGGER_STOP:
480 ad1889_mute(chip);
481 wsmc &= ~AD_DS_WSMC_WAEN;
482 break;
483 default:
484 snd_BUG();
485 return -EINVAL;
486 }
487
488 chip->wave.reg = wsmc;
489 ad1889_writew(chip, AD_DS_WSMC, wsmc);
490 ad1889_readw(chip, AD_DS_WSMC); /* flush */
491
492 /* reset the chip when STOP - will disable IRQs */
493 if (cmd == SNDRV_PCM_TRIGGER_STOP)
494 ad1889_channel_reset(chip, AD_CHAN_WAV);
495
496 return 0;
497 }
498
499 /* this is called in atomic context with IRQ disabled.
500 Must be as fast as possible and not sleep.
501 DMA should be *triggered* by this call.
502 The RAMC "ADEN" bit triggers DMA ADC On/Off */
503 static int
504 snd_ad1889_capture_trigger(struct snd_pcm_substream *ss, int cmd)
505 {
506 u16 ramc;
507 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
508
509 ramc = ad1889_readw(chip, AD_DS_RAMC);
510
511 switch (cmd) {
512 case SNDRV_PCM_TRIGGER_START:
513 /* enable DMA loop & interrupts */
514 ad1889_writew(chip, AD_DMA_ADC, AD_DMA_LOOP | AD_DMA_IM_CNT);
515 ramc |= AD_DS_RAMC_ADEN;
516 /* 1 to clear CHSS bit */
517 ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_ADCS);
518 break;
519 case SNDRV_PCM_TRIGGER_STOP:
520 ramc &= ~AD_DS_RAMC_ADEN;
521 break;
522 default:
523 return -EINVAL;
524 }
525
526 chip->ramc.reg = ramc;
527 ad1889_writew(chip, AD_DS_RAMC, ramc);
528 ad1889_readw(chip, AD_DS_RAMC); /* flush */
529
530 /* reset the chip when STOP - will disable IRQs */
531 if (cmd == SNDRV_PCM_TRIGGER_STOP)
532 ad1889_channel_reset(chip, AD_CHAN_ADC);
533
534 return 0;
535 }
536
537 /* Called in atomic context with IRQ disabled */
538 static snd_pcm_uframes_t
539 snd_ad1889_playback_pointer(struct snd_pcm_substream *ss)
540 {
541 size_t ptr = 0;
542 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
543
544 if (unlikely(!(chip->wave.reg & AD_DS_WSMC_WAEN)))
545 return 0;
546
547 ptr = ad1889_readl(chip, AD_DMA_WAVCA);
548 ptr -= chip->wave.addr;
549
550 if (snd_BUG_ON(ptr >= chip->wave.size))
551 return 0;
552
553 return bytes_to_frames(ss->runtime, ptr);
554 }
555
556 /* Called in atomic context with IRQ disabled */
557 static snd_pcm_uframes_t
558 snd_ad1889_capture_pointer(struct snd_pcm_substream *ss)
559 {
560 size_t ptr = 0;
561 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
562
563 if (unlikely(!(chip->ramc.reg & AD_DS_RAMC_ADEN)))
564 return 0;
565
566 ptr = ad1889_readl(chip, AD_DMA_ADCCA);
567 ptr -= chip->ramc.addr;
568
569 if (snd_BUG_ON(ptr >= chip->ramc.size))
570 return 0;
571
572 return bytes_to_frames(ss->runtime, ptr);
573 }
574
575 static struct snd_pcm_ops snd_ad1889_playback_ops = {
576 .open = snd_ad1889_playback_open,
577 .close = snd_ad1889_playback_close,
578 .ioctl = snd_pcm_lib_ioctl,
579 .hw_params = snd_ad1889_hw_params,
580 .hw_free = snd_ad1889_hw_free,
581 .prepare = snd_ad1889_playback_prepare,
582 .trigger = snd_ad1889_playback_trigger,
583 .pointer = snd_ad1889_playback_pointer,
584 };
585
586 static struct snd_pcm_ops snd_ad1889_capture_ops = {
587 .open = snd_ad1889_capture_open,
588 .close = snd_ad1889_capture_close,
589 .ioctl = snd_pcm_lib_ioctl,
590 .hw_params = snd_ad1889_hw_params,
591 .hw_free = snd_ad1889_hw_free,
592 .prepare = snd_ad1889_capture_prepare,
593 .trigger = snd_ad1889_capture_trigger,
594 .pointer = snd_ad1889_capture_pointer,
595 };
596
597 static irqreturn_t
598 snd_ad1889_interrupt(int irq, void *dev_id)
599 {
600 unsigned long st;
601 struct snd_ad1889 *chip = dev_id;
602
603 st = ad1889_readl(chip, AD_DMA_DISR);
604
605 /* clear ISR */
606 ad1889_writel(chip, AD_DMA_DISR, st);
607
608 st &= AD_INTR_MASK;
609
610 if (unlikely(!st))
611 return IRQ_NONE;
612
613 if (st & (AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI))
614 dev_dbg(chip->card->dev,
615 "Unexpected master or target abort interrupt!\n");
616
617 if ((st & AD_DMA_DISR_WAVI) && chip->psubs)
618 snd_pcm_period_elapsed(chip->psubs);
619 if ((st & AD_DMA_DISR_ADCI) && chip->csubs)
620 snd_pcm_period_elapsed(chip->csubs);
621
622 return IRQ_HANDLED;
623 }
624
625 static int
626 snd_ad1889_pcm_init(struct snd_ad1889 *chip, int device, struct snd_pcm **rpcm)
627 {
628 int err;
629 struct snd_pcm *pcm;
630
631 if (rpcm)
632 *rpcm = NULL;
633
634 err = snd_pcm_new(chip->card, chip->card->driver, device, 1, 1, &pcm);
635 if (err < 0)
636 return err;
637
638 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
639 &snd_ad1889_playback_ops);
640 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
641 &snd_ad1889_capture_ops);
642
643 pcm->private_data = chip;
644 pcm->info_flags = 0;
645 strcpy(pcm->name, chip->card->shortname);
646
647 chip->pcm = pcm;
648 chip->psubs = NULL;
649 chip->csubs = NULL;
650
651 err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
652 snd_dma_pci_data(chip->pci),
653 BUFFER_BYTES_MAX / 2,
654 BUFFER_BYTES_MAX);
655
656 if (err < 0) {
657 dev_err(chip->card->dev, "buffer allocation error: %d\n", err);
658 return err;
659 }
660
661 if (rpcm)
662 *rpcm = pcm;
663
664 return 0;
665 }
666
667 static void
668 snd_ad1889_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
669 {
670 struct snd_ad1889 *chip = entry->private_data;
671 u16 reg;
672 int tmp;
673
674 reg = ad1889_readw(chip, AD_DS_WSMC);
675 snd_iprintf(buffer, "Wave output: %s\n",
676 (reg & AD_DS_WSMC_WAEN) ? "enabled" : "disabled");
677 snd_iprintf(buffer, "Wave Channels: %s\n",
678 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
679 snd_iprintf(buffer, "Wave Quality: %d-bit linear\n",
680 (reg & AD_DS_WSMC_WA16) ? 16 : 8);
681
682 /* WARQ is at offset 12 */
683 tmp = (reg & AD_DS_WSMC_WARQ) ?
684 ((((reg & AD_DS_WSMC_WARQ) >> 12) & 0x01) ? 12 : 18) : 4;
685 tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
686
687 snd_iprintf(buffer, "Wave FIFO: %d %s words\n\n", tmp,
688 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
689
690
691 snd_iprintf(buffer, "Synthesis output: %s\n",
692 reg & AD_DS_WSMC_SYEN ? "enabled" : "disabled");
693
694 /* SYRQ is at offset 4 */
695 tmp = (reg & AD_DS_WSMC_SYRQ) ?
696 ((((reg & AD_DS_WSMC_SYRQ) >> 4) & 0x01) ? 12 : 18) : 4;
697 tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
698
699 snd_iprintf(buffer, "Synthesis FIFO: %d %s words\n\n", tmp,
700 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
701
702 reg = ad1889_readw(chip, AD_DS_RAMC);
703 snd_iprintf(buffer, "ADC input: %s\n",
704 (reg & AD_DS_RAMC_ADEN) ? "enabled" : "disabled");
705 snd_iprintf(buffer, "ADC Channels: %s\n",
706 (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
707 snd_iprintf(buffer, "ADC Quality: %d-bit linear\n",
708 (reg & AD_DS_RAMC_AD16) ? 16 : 8);
709
710 /* ACRQ is at offset 4 */
711 tmp = (reg & AD_DS_RAMC_ACRQ) ?
712 ((((reg & AD_DS_RAMC_ACRQ) >> 4) & 0x01) ? 12 : 18) : 4;
713 tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
714
715 snd_iprintf(buffer, "ADC FIFO: %d %s words\n\n", tmp,
716 (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
717
718 snd_iprintf(buffer, "Resampler input: %s\n",
719 reg & AD_DS_RAMC_REEN ? "enabled" : "disabled");
720
721 /* RERQ is at offset 12 */
722 tmp = (reg & AD_DS_RAMC_RERQ) ?
723 ((((reg & AD_DS_RAMC_RERQ) >> 12) & 0x01) ? 12 : 18) : 4;
724 tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
725
726 snd_iprintf(buffer, "Resampler FIFO: %d %s words\n\n", tmp,
727 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
728
729
730 /* doc says LSB represents -1.5dB, but the max value (-94.5dB)
731 suggests that LSB is -3dB, which is more coherent with the logarithmic
732 nature of the dB scale */
733 reg = ad1889_readw(chip, AD_DS_WADA);
734 snd_iprintf(buffer, "Left: %s, -%d dB\n",
735 (reg & AD_DS_WADA_LWAM) ? "mute" : "unmute",
736 ((reg & AD_DS_WADA_LWAA) >> 8) * 3);
737 reg = ad1889_readw(chip, AD_DS_WADA);
738 snd_iprintf(buffer, "Right: %s, -%d dB\n",
739 (reg & AD_DS_WADA_RWAM) ? "mute" : "unmute",
740 (reg & AD_DS_WADA_RWAA) * 3);
741
742 reg = ad1889_readw(chip, AD_DS_WAS);
743 snd_iprintf(buffer, "Wave samplerate: %u Hz\n", reg);
744 reg = ad1889_readw(chip, AD_DS_RES);
745 snd_iprintf(buffer, "Resampler samplerate: %u Hz\n", reg);
746 }
747
748 static void
749 snd_ad1889_proc_init(struct snd_ad1889 *chip)
750 {
751 struct snd_info_entry *entry;
752
753 if (!snd_card_proc_new(chip->card, chip->card->driver, &entry))
754 snd_info_set_text_ops(entry, chip, snd_ad1889_proc_read);
755 }
756
757 static struct ac97_quirk ac97_quirks[] = {
758 {
759 .subvendor = 0x11d4, /* AD */
760 .subdevice = 0x1889, /* AD1889 */
761 .codec_id = AC97_ID_AD1819,
762 .name = "AD1889",
763 .type = AC97_TUNE_HP_ONLY
764 },
765 { } /* terminator */
766 };
767
768 static void
769 snd_ad1889_ac97_xinit(struct snd_ad1889 *chip)
770 {
771 u16 reg;
772
773 reg = ad1889_readw(chip, AD_AC97_ACIC);
774 reg |= AD_AC97_ACIC_ACRD; /* Reset Disable */
775 ad1889_writew(chip, AD_AC97_ACIC, reg);
776 ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
777 udelay(10);
778 /* Interface Enable */
779 reg |= AD_AC97_ACIC_ACIE;
780 ad1889_writew(chip, AD_AC97_ACIC, reg);
781
782 snd_ad1889_ac97_ready(chip);
783
784 /* Audio Stream Output | Variable Sample Rate Mode */
785 reg = ad1889_readw(chip, AD_AC97_ACIC);
786 reg |= AD_AC97_ACIC_ASOE | AD_AC97_ACIC_VSRM;
787 ad1889_writew(chip, AD_AC97_ACIC, reg);
788 ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
789
790 }
791
792 static void
793 snd_ad1889_ac97_bus_free(struct snd_ac97_bus *bus)
794 {
795 struct snd_ad1889 *chip = bus->private_data;
796 chip->ac97_bus = NULL;
797 }
798
799 static void
800 snd_ad1889_ac97_free(struct snd_ac97 *ac97)
801 {
802 struct snd_ad1889 *chip = ac97->private_data;
803 chip->ac97 = NULL;
804 }
805
806 static int
807 snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
808 {
809 int err;
810 struct snd_ac97_template ac97;
811 static struct snd_ac97_bus_ops ops = {
812 .write = snd_ad1889_ac97_write,
813 .read = snd_ad1889_ac97_read,
814 };
815
816 /* doing that here, it works. */
817 snd_ad1889_ac97_xinit(chip);
818
819 err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
820 if (err < 0)
821 return err;
822
823 chip->ac97_bus->private_free = snd_ad1889_ac97_bus_free;
824
825 memset(&ac97, 0, sizeof(ac97));
826 ac97.private_data = chip;
827 ac97.private_free = snd_ad1889_ac97_free;
828 ac97.pci = chip->pci;
829
830 err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
831 if (err < 0)
832 return err;
833
834 snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
835
836 return 0;
837 }
838
839 static int
840 snd_ad1889_free(struct snd_ad1889 *chip)
841 {
842 if (chip->irq < 0)
843 goto skip_hw;
844
845 spin_lock_irq(&chip->lock);
846
847 ad1889_mute(chip);
848
849 /* Turn off interrupt on count and zero DMA registers */
850 ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC);
851
852 /* clear DISR. If we don't, we'd better jump off the Eiffel Tower */
853 ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI);
854 ad1889_readl(chip, AD_DMA_DISR); /* flush, dammit! */
855
856 spin_unlock_irq(&chip->lock);
857
858 if (chip->irq >= 0)
859 free_irq(chip->irq, chip);
860
861 skip_hw:
862 if (chip->iobase)
863 iounmap(chip->iobase);
864
865 pci_release_regions(chip->pci);
866 pci_disable_device(chip->pci);
867
868 kfree(chip);
869 return 0;
870 }
871
872 static int
873 snd_ad1889_dev_free(struct snd_device *device)
874 {
875 struct snd_ad1889 *chip = device->device_data;
876 return snd_ad1889_free(chip);
877 }
878
879 static int
880 snd_ad1889_init(struct snd_ad1889 *chip)
881 {
882 ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */
883 ad1889_readw(chip, AD_DS_CCS); /* flush posted write */
884
885 mdelay(10);
886
887 /* enable Master and Target abort interrupts */
888 ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE);
889
890 return 0;
891 }
892
893 static int
894 snd_ad1889_create(struct snd_card *card,
895 struct pci_dev *pci,
896 struct snd_ad1889 **rchip)
897 {
898 int err;
899
900 struct snd_ad1889 *chip;
901 static struct snd_device_ops ops = {
902 .dev_free = snd_ad1889_dev_free,
903 };
904
905 *rchip = NULL;
906
907 if ((err = pci_enable_device(pci)) < 0)
908 return err;
909
910 /* check PCI availability (32bit DMA) */
911 if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 ||
912 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
913 dev_err(card->dev, "error setting 32-bit DMA mask.\n");
914 pci_disable_device(pci);
915 return -ENXIO;
916 }
917
918 /* allocate chip specific data with zero-filled memory */
919 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
920 pci_disable_device(pci);
921 return -ENOMEM;
922 }
923
924 chip->card = card;
925 card->private_data = chip;
926 chip->pci = pci;
927 chip->irq = -1;
928
929 /* (1) PCI resource allocation */
930 if ((err = pci_request_regions(pci, card->driver)) < 0)
931 goto free_and_ret;
932
933 chip->bar = pci_resource_start(pci, 0);
934 chip->iobase = pci_ioremap_bar(pci, 0);
935 if (chip->iobase == NULL) {
936 dev_err(card->dev, "unable to reserve region.\n");
937 err = -EBUSY;
938 goto free_and_ret;
939 }
940
941 pci_set_master(pci);
942
943 spin_lock_init(&chip->lock); /* only now can we call ad1889_free */
944
945 if (request_irq(pci->irq, snd_ad1889_interrupt,
946 IRQF_SHARED, KBUILD_MODNAME, chip)) {
947 dev_err(card->dev, "cannot obtain IRQ %d\n", pci->irq);
948 snd_ad1889_free(chip);
949 return -EBUSY;
950 }
951
952 chip->irq = pci->irq;
953 synchronize_irq(chip->irq);
954
955 /* (2) initialization of the chip hardware */
956 if ((err = snd_ad1889_init(chip)) < 0) {
957 snd_ad1889_free(chip);
958 return err;
959 }
960
961 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
962 snd_ad1889_free(chip);
963 return err;
964 }
965
966 *rchip = chip;
967
968 return 0;
969
970 free_and_ret:
971 kfree(chip);
972 pci_disable_device(pci);
973
974 return err;
975 }
976
977 static int
978 snd_ad1889_probe(struct pci_dev *pci,
979 const struct pci_device_id *pci_id)
980 {
981 int err;
982 static int devno;
983 struct snd_card *card;
984 struct snd_ad1889 *chip;
985
986 /* (1) */
987 if (devno >= SNDRV_CARDS)
988 return -ENODEV;
989 if (!enable[devno]) {
990 devno++;
991 return -ENOENT;
992 }
993
994 /* (2) */
995 err = snd_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
996 0, &card);
997 /* XXX REVISIT: we can probably allocate chip in this call */
998 if (err < 0)
999 return err;
1000
1001 strcpy(card->driver, "AD1889");
1002 strcpy(card->shortname, "Analog Devices AD1889");
1003
1004 /* (3) */
1005 err = snd_ad1889_create(card, pci, &chip);
1006 if (err < 0)
1007 goto free_and_ret;
1008
1009 /* (4) */
1010 sprintf(card->longname, "%s at 0x%lx irq %i",
1011 card->shortname, chip->bar, chip->irq);
1012
1013 /* (5) */
1014 /* register AC97 mixer */
1015 err = snd_ad1889_ac97_init(chip, ac97_quirk[devno]);
1016 if (err < 0)
1017 goto free_and_ret;
1018
1019 err = snd_ad1889_pcm_init(chip, 0, NULL);
1020 if (err < 0)
1021 goto free_and_ret;
1022
1023 /* register proc interface */
1024 snd_ad1889_proc_init(chip);
1025
1026 /* (6) */
1027 err = snd_card_register(card);
1028 if (err < 0)
1029 goto free_and_ret;
1030
1031 /* (7) */
1032 pci_set_drvdata(pci, card);
1033
1034 devno++;
1035 return 0;
1036
1037 free_and_ret:
1038 snd_card_free(card);
1039 return err;
1040 }
1041
1042 static void
1043 snd_ad1889_remove(struct pci_dev *pci)
1044 {
1045 snd_card_free(pci_get_drvdata(pci));
1046 }
1047
1048 static const struct pci_device_id snd_ad1889_ids[] = {
1049 { PCI_DEVICE(PCI_VENDOR_ID_ANALOG_DEVICES, PCI_DEVICE_ID_AD1889JS) },
1050 { 0, },
1051 };
1052 MODULE_DEVICE_TABLE(pci, snd_ad1889_ids);
1053
1054 static struct pci_driver ad1889_pci_driver = {
1055 .name = KBUILD_MODNAME,
1056 .id_table = snd_ad1889_ids,
1057 .probe = snd_ad1889_probe,
1058 .remove = snd_ad1889_remove,
1059 };
1060
1061 module_pci_driver(ad1889_pci_driver);
Linux with added FPC-III support