1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Analog Devices 1889 audio driver
3 *
4 * This is a driver for the AD1889 PCI audio chipset found
5 * on the HP PA-RISC [BCJ]-xxx0 workstations.
6 *
7 * Copyright (C) 2004-2005, Kyle McMartin <kyle@parisc-linux.org>
8 * Copyright (C) 2005, Thibaut Varene <varenet@parisc-linux.org>
9 * Based on the OSS AD1889 driver by Randolph Chung <tausq@debian.org>
10 *
11 * TODO:
12 * Do we need to take care of CCS register?
13 * Maybe we could use finer grained locking (separate locks for pb/cap)?
14 * Wishlist:
15 * Control Interface (mixer) support
16 * Better AC97 support (VSR...)?
17 * PM support
18 * MIDI support
19 * Game Port support
20 * SG DMA support (this will need *a lot* of work)
21 */
22
23 #include <linux/init.h>
24 #include <linux/pci.h>
25 #include <linux/dma-mapping.h>
26 #include <linux/slab.h>
27 #include <linux/interrupt.h>
28 #include <linux/compiler.h>
29 #include <linux/delay.h>
30 #include <linux/module.h>
31 #include <linux/io.h>
32
33 #include <sound/core.h>
34 #include <sound/pcm.h>
35 #include <sound/initval.h>
36 #include <sound/ac97_codec.h>
37
38 #include "ad1889.h"
39 #include "ac97/ac97_id.h"
40
41 #define AD1889_DRVVER "Version: 1.7"
42
43 MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>, Thibaut Varene <t-bone@parisc-linux.org>");
44 MODULE_DESCRIPTION("Analog Devices AD1889 ALSA sound driver");
45 MODULE_LICENSE("GPL");
46
47 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
48 module_param_array(index, int, NULL, 0444);
49 MODULE_PARM_DESC(index, "Index value for the AD1889 soundcard.");
50
51 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
52 module_param_array(id, charp, NULL, 0444);
53 MODULE_PARM_DESC(id, "ID string for the AD1889 soundcard.");
54
55 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
56 module_param_array(enable, bool, NULL, 0444);
57 MODULE_PARM_DESC(enable, "Enable AD1889 soundcard.");
58
59 static char *ac97_quirk[SNDRV_CARDS];
60 module_param_array(ac97_quirk, charp, NULL, 0444);
61 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
62
63 #define DEVNAME "ad1889"
64 #define PFX DEVNAME ": "
65
66 /* keep track of some hw registers */
67 struct ad1889_register_state {
68 u16 reg; /* reg setup */
69 u32 addr; /* dma base address */
70 unsigned long size; /* DMA buffer size */
71 };
72
73 struct snd_ad1889 {
74 struct snd_card *card;
75 struct pci_dev *pci;
76
77 int irq;
78 unsigned long bar;
79 void __iomem *iobase;
80
81 struct snd_ac97 *ac97;
82 struct snd_ac97_bus *ac97_bus;
83 struct snd_pcm *pcm;
84 struct snd_info_entry *proc;
85
86 struct snd_pcm_substream *psubs;
87 struct snd_pcm_substream *csubs;
88
89 /* playback register state */
90 struct ad1889_register_state wave;
91 struct ad1889_register_state ramc;
92
93 spinlock_t lock;
94 };
95
96 static inline u16
97 ad1889_readw(struct snd_ad1889 *chip, unsigned reg)
98 {
99 return readw(chip->iobase + reg);
100 }
101
102 static inline void
103 ad1889_writew(struct snd_ad1889 *chip, unsigned reg, u16 val)
104 {
105 writew(val, chip->iobase + reg);
106 }
107
108 static inline u32
109 ad1889_readl(struct snd_ad1889 *chip, unsigned reg)
110 {
111 return readl(chip->iobase + reg);
112 }
113
114 static inline void
115 ad1889_writel(struct snd_ad1889 *chip, unsigned reg, u32 val)
116 {
117 writel(val, chip->iobase + reg);
118 }
119
120 static inline void
121 ad1889_unmute(struct snd_ad1889 *chip)
122 {
123 u16 st;
124 st = ad1889_readw(chip, AD_DS_WADA) &
125 ~(AD_DS_WADA_RWAM | AD_DS_WADA_LWAM);
126 ad1889_writew(chip, AD_DS_WADA, st);
127 ad1889_readw(chip, AD_DS_WADA);
128 }
129
130 static inline void
131 ad1889_mute(struct snd_ad1889 *chip)
132 {
133 u16 st;
134 st = ad1889_readw(chip, AD_DS_WADA) | AD_DS_WADA_RWAM | AD_DS_WADA_LWAM;
135 ad1889_writew(chip, AD_DS_WADA, st);
136 ad1889_readw(chip, AD_DS_WADA);
137 }
138
139 static inline void
140 ad1889_load_adc_buffer_address(struct snd_ad1889 *chip, u32 address)
141 {
142 ad1889_writel(chip, AD_DMA_ADCBA, address);
143 ad1889_writel(chip, AD_DMA_ADCCA, address);
144 }
145
146 static inline void
147 ad1889_load_adc_buffer_count(struct snd_ad1889 *chip, u32 count)
148 {
149 ad1889_writel(chip, AD_DMA_ADCBC, count);
150 ad1889_writel(chip, AD_DMA_ADCCC, count);
151 }
152
153 static inline void
154 ad1889_load_adc_interrupt_count(struct snd_ad1889 *chip, u32 count)
155 {
156 ad1889_writel(chip, AD_DMA_ADCIB, count);
157 ad1889_writel(chip, AD_DMA_ADCIC, count);
158 }
159
160 static inline void
161 ad1889_load_wave_buffer_address(struct snd_ad1889 *chip, u32 address)
162 {
163 ad1889_writel(chip, AD_DMA_WAVBA, address);
164 ad1889_writel(chip, AD_DMA_WAVCA, address);
165 }
166
167 static inline void
168 ad1889_load_wave_buffer_count(struct snd_ad1889 *chip, u32 count)
169 {
170 ad1889_writel(chip, AD_DMA_WAVBC, count);
171 ad1889_writel(chip, AD_DMA_WAVCC, count);
172 }
173
174 static inline void
175 ad1889_load_wave_interrupt_count(struct snd_ad1889 *chip, u32 count)
176 {
177 ad1889_writel(chip, AD_DMA_WAVIB, count);
178 ad1889_writel(chip, AD_DMA_WAVIC, count);
179 }
180
181 static void
182 ad1889_channel_reset(struct snd_ad1889 *chip, unsigned int channel)
183 {
184 u16 reg;
185
186 if (channel & AD_CHAN_WAV) {
187 /* Disable wave channel */
188 reg = ad1889_readw(chip, AD_DS_WSMC) & ~AD_DS_WSMC_WAEN;
189 ad1889_writew(chip, AD_DS_WSMC, reg);
190 chip->wave.reg = reg;
191
192 /* disable IRQs */
193 reg = ad1889_readw(chip, AD_DMA_WAV);
194 reg &= AD_DMA_IM_DIS;
195 reg &= ~AD_DMA_LOOP;
196 ad1889_writew(chip, AD_DMA_WAV, reg);
197
198 /* clear IRQ and address counters and pointers */
199 ad1889_load_wave_buffer_address(chip, 0x0);
200 ad1889_load_wave_buffer_count(chip, 0x0);
201 ad1889_load_wave_interrupt_count(chip, 0x0);
202
203 /* flush */
204 ad1889_readw(chip, AD_DMA_WAV);
205 }
206
207 if (channel & AD_CHAN_ADC) {
208 /* Disable ADC channel */
209 reg = ad1889_readw(chip, AD_DS_RAMC) & ~AD_DS_RAMC_ADEN;
210 ad1889_writew(chip, AD_DS_RAMC, reg);
211 chip->ramc.reg = reg;
212
213 reg = ad1889_readw(chip, AD_DMA_ADC);
214 reg &= AD_DMA_IM_DIS;
215 reg &= ~AD_DMA_LOOP;
216 ad1889_writew(chip, AD_DMA_ADC, reg);
217
218 ad1889_load_adc_buffer_address(chip, 0x0);
219 ad1889_load_adc_buffer_count(chip, 0x0);
220 ad1889_load_adc_interrupt_count(chip, 0x0);
221
222 /* flush */
223 ad1889_readw(chip, AD_DMA_ADC);
224 }
225 }
226
227 static u16
228 snd_ad1889_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
229 {
230 struct snd_ad1889 *chip = ac97->private_data;
231 return ad1889_readw(chip, AD_AC97_BASE + reg);
232 }
233
234 static void
235 snd_ad1889_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val)
236 {
237 struct snd_ad1889 *chip = ac97->private_data;
238 ad1889_writew(chip, AD_AC97_BASE + reg, val);
239 }
240
241 static int
242 snd_ad1889_ac97_ready(struct snd_ad1889 *chip)
243 {
244 int retry = 400; /* average needs 352 msec */
245
246 while (!(ad1889_readw(chip, AD_AC97_ACIC) & AD_AC97_ACIC_ACRDY)
247 && --retry)
248 usleep_range(1000, 2000);
249 if (!retry) {
250 dev_err(chip->card->dev, "[%s] Link is not ready.\n",
251 __func__);
252 return -EIO;
253 }
254 dev_dbg(chip->card->dev, "[%s] ready after %d ms\n", __func__, 400 - retry);
255
256 return 0;
257 }
258
259 static const struct snd_pcm_hardware snd_ad1889_playback_hw = {
260 .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
261 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
262 .formats = SNDRV_PCM_FMTBIT_S16_LE,
263 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
264 .rate_min = 8000, /* docs say 7000, but we're lazy */
265 .rate_max = 48000,
266 .channels_min = 1,
267 .channels_max = 2,
268 .buffer_bytes_max = BUFFER_BYTES_MAX,
269 .period_bytes_min = PERIOD_BYTES_MIN,
270 .period_bytes_max = PERIOD_BYTES_MAX,
271 .periods_min = PERIODS_MIN,
272 .periods_max = PERIODS_MAX,
273 /*.fifo_size = 0,*/
274 };
275
276 static const struct snd_pcm_hardware snd_ad1889_capture_hw = {
277 .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
278 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
279 .formats = SNDRV_PCM_FMTBIT_S16_LE,
280 .rates = SNDRV_PCM_RATE_48000,
281 .rate_min = 48000, /* docs say we could to VSR, but we're lazy */
282 .rate_max = 48000,
283 .channels_min = 1,
284 .channels_max = 2,
285 .buffer_bytes_max = BUFFER_BYTES_MAX,
286 .period_bytes_min = PERIOD_BYTES_MIN,
287 .period_bytes_max = PERIOD_BYTES_MAX,
288 .periods_min = PERIODS_MIN,
289 .periods_max = PERIODS_MAX,
290 /*.fifo_size = 0,*/
291 };
292
293 static int
294 snd_ad1889_playback_open(struct snd_pcm_substream *ss)
295 {
296 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
297 struct snd_pcm_runtime *rt = ss->runtime;
298
299 chip->psubs = ss;
300 rt->hw = snd_ad1889_playback_hw;
301
302 return 0;
303 }
304
305 static int
306 snd_ad1889_capture_open(struct snd_pcm_substream *ss)
307 {
308 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
309 struct snd_pcm_runtime *rt = ss->runtime;
310
311 chip->csubs = ss;
312 rt->hw = snd_ad1889_capture_hw;
313
314 return 0;
315 }
316
317 static int
318 snd_ad1889_playback_close(struct snd_pcm_substream *ss)
319 {
320 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
321 chip->psubs = NULL;
322 return 0;
323 }
324
325 static int
326 snd_ad1889_capture_close(struct snd_pcm_substream *ss)
327 {
328 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
329 chip->csubs = NULL;
330 return 0;
331 }
332
333 static int
334 snd_ad1889_playback_prepare(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 unsigned int size = snd_pcm_lib_buffer_bytes(ss);
339 unsigned int count = snd_pcm_lib_period_bytes(ss);
340 u16 reg;
341
342 ad1889_channel_reset(chip, AD_CHAN_WAV);
343
344 reg = ad1889_readw(chip, AD_DS_WSMC);
345
346 /* Mask out 16-bit / Stereo */
347 reg &= ~(AD_DS_WSMC_WA16 | AD_DS_WSMC_WAST);
348
349 if (snd_pcm_format_width(rt->format) == 16)
350 reg |= AD_DS_WSMC_WA16;
351
352 if (rt->channels > 1)
353 reg |= AD_DS_WSMC_WAST;
354
355 /* let's make sure we don't clobber ourselves */
356 spin_lock_irq(&chip->lock);
357
358 chip->wave.size = size;
359 chip->wave.reg = reg;
360 chip->wave.addr = rt->dma_addr;
361
362 ad1889_writew(chip, AD_DS_WSMC, chip->wave.reg);
363
364 /* Set sample rates on the codec */
365 ad1889_writew(chip, AD_DS_WAS, rt->rate);
366
367 /* Set up DMA */
368 ad1889_load_wave_buffer_address(chip, chip->wave.addr);
369 ad1889_load_wave_buffer_count(chip, size);
370 ad1889_load_wave_interrupt_count(chip, count);
371
372 /* writes flush */
373 ad1889_readw(chip, AD_DS_WSMC);
374
375 spin_unlock_irq(&chip->lock);
376
377 dev_dbg(chip->card->dev,
378 "prepare playback: addr = 0x%x, count = %u, size = %u, reg = 0x%x, rate = %u\n",
379 chip->wave.addr, count, size, reg, rt->rate);
380 return 0;
381 }
382
383 static int
384 snd_ad1889_capture_prepare(struct snd_pcm_substream *ss)
385 {
386 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
387 struct snd_pcm_runtime *rt = ss->runtime;
388 unsigned int size = snd_pcm_lib_buffer_bytes(ss);
389 unsigned int count = snd_pcm_lib_period_bytes(ss);
390 u16 reg;
391
392 ad1889_channel_reset(chip, AD_CHAN_ADC);
393
394 reg = ad1889_readw(chip, AD_DS_RAMC);
395
396 /* Mask out 16-bit / Stereo */
397 reg &= ~(AD_DS_RAMC_AD16 | AD_DS_RAMC_ADST);
398
399 if (snd_pcm_format_width(rt->format) == 16)
400 reg |= AD_DS_RAMC_AD16;
401
402 if (rt->channels > 1)
403 reg |= AD_DS_RAMC_ADST;
404
405 /* let's make sure we don't clobber ourselves */
406 spin_lock_irq(&chip->lock);
407
408 chip->ramc.size = size;
409 chip->ramc.reg = reg;
410 chip->ramc.addr = rt->dma_addr;
411
412 ad1889_writew(chip, AD_DS_RAMC, chip->ramc.reg);
413
414 /* Set up DMA */
415 ad1889_load_adc_buffer_address(chip, chip->ramc.addr);
416 ad1889_load_adc_buffer_count(chip, size);
417 ad1889_load_adc_interrupt_count(chip, count);
418
419 /* writes flush */
420 ad1889_readw(chip, AD_DS_RAMC);
421
422 spin_unlock_irq(&chip->lock);
423
424 dev_dbg(chip->card->dev,
425 "prepare capture: addr = 0x%x, count = %u, size = %u, reg = 0x%x, rate = %u\n",
426 chip->ramc.addr, count, size, reg, rt->rate);
427 return 0;
428 }
429
430 /* this is called in atomic context with IRQ disabled.
431 Must be as fast as possible and not sleep.
432 DMA should be *triggered* by this call.
433 The WSMC "WAEN" bit triggers DMA Wave On/Off */
434 static int
435 snd_ad1889_playback_trigger(struct snd_pcm_substream *ss, int cmd)
436 {
437 u16 wsmc;
438 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
439
440 wsmc = ad1889_readw(chip, AD_DS_WSMC);
441
442 switch (cmd) {
443 case SNDRV_PCM_TRIGGER_START:
444 /* enable DMA loop & interrupts */
445 ad1889_writew(chip, AD_DMA_WAV, AD_DMA_LOOP | AD_DMA_IM_CNT);
446 wsmc |= AD_DS_WSMC_WAEN;
447 /* 1 to clear CHSS bit */
448 ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_WAVS);
449 ad1889_unmute(chip);
450 break;
451 case SNDRV_PCM_TRIGGER_STOP:
452 ad1889_mute(chip);
453 wsmc &= ~AD_DS_WSMC_WAEN;
454 break;
455 default:
456 snd_BUG();
457 return -EINVAL;
458 }
459
460 chip->wave.reg = wsmc;
461 ad1889_writew(chip, AD_DS_WSMC, wsmc);
462 ad1889_readw(chip, AD_DS_WSMC); /* flush */
463
464 /* reset the chip when STOP - will disable IRQs */
465 if (cmd == SNDRV_PCM_TRIGGER_STOP)
466 ad1889_channel_reset(chip, AD_CHAN_WAV);
467
468 return 0;
469 }
470
471 /* this is called in atomic context with IRQ disabled.
472 Must be as fast as possible and not sleep.
473 DMA should be *triggered* by this call.
474 The RAMC "ADEN" bit triggers DMA ADC On/Off */
475 static int
476 snd_ad1889_capture_trigger(struct snd_pcm_substream *ss, int cmd)
477 {
478 u16 ramc;
479 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
480
481 ramc = ad1889_readw(chip, AD_DS_RAMC);
482
483 switch (cmd) {
484 case SNDRV_PCM_TRIGGER_START:
485 /* enable DMA loop & interrupts */
486 ad1889_writew(chip, AD_DMA_ADC, AD_DMA_LOOP | AD_DMA_IM_CNT);
487 ramc |= AD_DS_RAMC_ADEN;
488 /* 1 to clear CHSS bit */
489 ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_ADCS);
490 break;
491 case SNDRV_PCM_TRIGGER_STOP:
492 ramc &= ~AD_DS_RAMC_ADEN;
493 break;
494 default:
495 return -EINVAL;
496 }
497
498 chip->ramc.reg = ramc;
499 ad1889_writew(chip, AD_DS_RAMC, ramc);
500 ad1889_readw(chip, AD_DS_RAMC); /* flush */
501
502 /* reset the chip when STOP - will disable IRQs */
503 if (cmd == SNDRV_PCM_TRIGGER_STOP)
504 ad1889_channel_reset(chip, AD_CHAN_ADC);
505
506 return 0;
507 }
508
509 /* Called in atomic context with IRQ disabled */
510 static snd_pcm_uframes_t
511 snd_ad1889_playback_pointer(struct snd_pcm_substream *ss)
512 {
513 size_t ptr = 0;
514 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
515
516 if (unlikely(!(chip->wave.reg & AD_DS_WSMC_WAEN)))
517 return 0;
518
519 ptr = ad1889_readl(chip, AD_DMA_WAVCA);
520 ptr -= chip->wave.addr;
521
522 if (snd_BUG_ON(ptr >= chip->wave.size))
523 return 0;
524
525 return bytes_to_frames(ss->runtime, ptr);
526 }
527
528 /* Called in atomic context with IRQ disabled */
529 static snd_pcm_uframes_t
530 snd_ad1889_capture_pointer(struct snd_pcm_substream *ss)
531 {
532 size_t ptr = 0;
533 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
534
535 if (unlikely(!(chip->ramc.reg & AD_DS_RAMC_ADEN)))
536 return 0;
537
538 ptr = ad1889_readl(chip, AD_DMA_ADCCA);
539 ptr -= chip->ramc.addr;
540
541 if (snd_BUG_ON(ptr >= chip->ramc.size))
542 return 0;
543
544 return bytes_to_frames(ss->runtime, ptr);
545 }
546
547 static const struct snd_pcm_ops snd_ad1889_playback_ops = {
548 .open = snd_ad1889_playback_open,
549 .close = snd_ad1889_playback_close,
550 .prepare = snd_ad1889_playback_prepare,
551 .trigger = snd_ad1889_playback_trigger,
552 .pointer = snd_ad1889_playback_pointer,
553 };
554
555 static const struct snd_pcm_ops snd_ad1889_capture_ops = {
556 .open = snd_ad1889_capture_open,
557 .close = snd_ad1889_capture_close,
558 .prepare = snd_ad1889_capture_prepare,
559 .trigger = snd_ad1889_capture_trigger,
560 .pointer = snd_ad1889_capture_pointer,
561 };
562
563 static irqreturn_t
564 snd_ad1889_interrupt(int irq, void *dev_id)
565 {
566 unsigned long st;
567 struct snd_ad1889 *chip = dev_id;
568
569 st = ad1889_readl(chip, AD_DMA_DISR);
570
571 /* clear ISR */
572 ad1889_writel(chip, AD_DMA_DISR, st);
573
574 st &= AD_INTR_MASK;
575
576 if (unlikely(!st))
577 return IRQ_NONE;
578
579 if (st & (AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI))
580 dev_dbg(chip->card->dev,
581 "Unexpected master or target abort interrupt!\n");
582
583 if ((st & AD_DMA_DISR_WAVI) && chip->psubs)
584 snd_pcm_period_elapsed(chip->psubs);
585 if ((st & AD_DMA_DISR_ADCI) && chip->csubs)
586 snd_pcm_period_elapsed(chip->csubs);
587
588 return IRQ_HANDLED;
589 }
590
591 static int
592 snd_ad1889_pcm_init(struct snd_ad1889 *chip, int device)
593 {
594 int err;
595 struct snd_pcm *pcm;
596
597 err = snd_pcm_new(chip->card, chip->card->driver, device, 1, 1, &pcm);
598 if (err < 0)
599 return err;
600
601 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
602 &snd_ad1889_playback_ops);
603 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
604 &snd_ad1889_capture_ops);
605
606 pcm->private_data = chip;
607 pcm->info_flags = 0;
608 strcpy(pcm->name, chip->card->shortname);
609
610 chip->pcm = pcm;
611 chip->psubs = NULL;
612 chip->csubs = NULL;
613
614 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
615 BUFFER_BYTES_MAX / 2, BUFFER_BYTES_MAX);
616
617 return 0;
618 }
619
620 static void
621 snd_ad1889_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
622 {
623 struct snd_ad1889 *chip = entry->private_data;
624 u16 reg;
625 int tmp;
626
627 reg = ad1889_readw(chip, AD_DS_WSMC);
628 snd_iprintf(buffer, "Wave output: %s\n",
629 (reg & AD_DS_WSMC_WAEN) ? "enabled" : "disabled");
630 snd_iprintf(buffer, "Wave Channels: %s\n",
631 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
632 snd_iprintf(buffer, "Wave Quality: %d-bit linear\n",
633 (reg & AD_DS_WSMC_WA16) ? 16 : 8);
634
635 /* WARQ is at offset 12 */
636 tmp = (reg & AD_DS_WSMC_WARQ) ?
637 ((((reg & AD_DS_WSMC_WARQ) >> 12) & 0x01) ? 12 : 18) : 4;
638 tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
639
640 snd_iprintf(buffer, "Wave FIFO: %d %s words\n\n", tmp,
641 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
642
643
644 snd_iprintf(buffer, "Synthesis output: %s\n",
645 reg & AD_DS_WSMC_SYEN ? "enabled" : "disabled");
646
647 /* SYRQ is at offset 4 */
648 tmp = (reg & AD_DS_WSMC_SYRQ) ?
649 ((((reg & AD_DS_WSMC_SYRQ) >> 4) & 0x01) ? 12 : 18) : 4;
650 tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
651
652 snd_iprintf(buffer, "Synthesis FIFO: %d %s words\n\n", tmp,
653 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
654
655 reg = ad1889_readw(chip, AD_DS_RAMC);
656 snd_iprintf(buffer, "ADC input: %s\n",
657 (reg & AD_DS_RAMC_ADEN) ? "enabled" : "disabled");
658 snd_iprintf(buffer, "ADC Channels: %s\n",
659 (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
660 snd_iprintf(buffer, "ADC Quality: %d-bit linear\n",
661 (reg & AD_DS_RAMC_AD16) ? 16 : 8);
662
663 /* ACRQ is at offset 4 */
664 tmp = (reg & AD_DS_RAMC_ACRQ) ?
665 ((((reg & AD_DS_RAMC_ACRQ) >> 4) & 0x01) ? 12 : 18) : 4;
666 tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
667
668 snd_iprintf(buffer, "ADC FIFO: %d %s words\n\n", tmp,
669 (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
670
671 snd_iprintf(buffer, "Resampler input: %s\n",
672 reg & AD_DS_RAMC_REEN ? "enabled" : "disabled");
673
674 /* RERQ is at offset 12 */
675 tmp = (reg & AD_DS_RAMC_RERQ) ?
676 ((((reg & AD_DS_RAMC_RERQ) >> 12) & 0x01) ? 12 : 18) : 4;
677 tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
678
679 snd_iprintf(buffer, "Resampler FIFO: %d %s words\n\n", tmp,
680 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
681
682
683 /* doc says LSB represents -1.5dB, but the max value (-94.5dB)
684 suggests that LSB is -3dB, which is more coherent with the logarithmic
685 nature of the dB scale */
686 reg = ad1889_readw(chip, AD_DS_WADA);
687 snd_iprintf(buffer, "Left: %s, -%d dB\n",
688 (reg & AD_DS_WADA_LWAM) ? "mute" : "unmute",
689 ((reg & AD_DS_WADA_LWAA) >> 8) * 3);
690 reg = ad1889_readw(chip, AD_DS_WADA);
691 snd_iprintf(buffer, "Right: %s, -%d dB\n",
692 (reg & AD_DS_WADA_RWAM) ? "mute" : "unmute",
693 (reg & AD_DS_WADA_RWAA) * 3);
694
695 reg = ad1889_readw(chip, AD_DS_WAS);
696 snd_iprintf(buffer, "Wave samplerate: %u Hz\n", reg);
697 reg = ad1889_readw(chip, AD_DS_RES);
698 snd_iprintf(buffer, "Resampler samplerate: %u Hz\n", reg);
699 }
700
701 static void
702 snd_ad1889_proc_init(struct snd_ad1889 *chip)
703 {
704 snd_card_ro_proc_new(chip->card, chip->card->driver,
705 chip, snd_ad1889_proc_read);
706 }
707
708 static const struct ac97_quirk ac97_quirks[] = {
709 {
710 .subvendor = 0x11d4, /* AD */
711 .subdevice = 0x1889, /* AD1889 */
712 .codec_id = AC97_ID_AD1819,
713 .name = "AD1889",
714 .type = AC97_TUNE_HP_ONLY
715 },
716 { } /* terminator */
717 };
718
719 static void
720 snd_ad1889_ac97_xinit(struct snd_ad1889 *chip)
721 {
722 u16 reg;
723
724 reg = ad1889_readw(chip, AD_AC97_ACIC);
725 reg |= AD_AC97_ACIC_ACRD; /* Reset Disable */
726 ad1889_writew(chip, AD_AC97_ACIC, reg);
727 ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
728 udelay(10);
729 /* Interface Enable */
730 reg |= AD_AC97_ACIC_ACIE;
731 ad1889_writew(chip, AD_AC97_ACIC, reg);
732
733 snd_ad1889_ac97_ready(chip);
734
735 /* Audio Stream Output | Variable Sample Rate Mode */
736 reg = ad1889_readw(chip, AD_AC97_ACIC);
737 reg |= AD_AC97_ACIC_ASOE | AD_AC97_ACIC_VSRM;
738 ad1889_writew(chip, AD_AC97_ACIC, reg);
739 ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
740
741 }
742
743 static int
744 snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
745 {
746 int err;
747 struct snd_ac97_template ac97;
748 static const struct snd_ac97_bus_ops ops = {
749 .write = snd_ad1889_ac97_write,
750 .read = snd_ad1889_ac97_read,
751 };
752
753 /* doing that here, it works. */
754 snd_ad1889_ac97_xinit(chip);
755
756 err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
757 if (err < 0)
758 return err;
759
760 memset(&ac97, 0, sizeof(ac97));
761 ac97.private_data = chip;
762 ac97.pci = chip->pci;
763
764 err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
765 if (err < 0)
766 return err;
767
768 snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
769
770 return 0;
771 }
772
773 static void
774 snd_ad1889_free(struct snd_card *card)
775 {
776 struct snd_ad1889 *chip = card->private_data;
777
778 spin_lock_irq(&chip->lock);
779
780 ad1889_mute(chip);
781
782 /* Turn off interrupt on count and zero DMA registers */
783 ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC);
784
785 /* clear DISR. If we don't, we'd better jump off the Eiffel Tower */
786 ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI);
787 ad1889_readl(chip, AD_DMA_DISR); /* flush, dammit! */
788
789 spin_unlock_irq(&chip->lock);
790 }
791
792 static int
793 snd_ad1889_create(struct snd_card *card, struct pci_dev *pci)
794 {
795 struct snd_ad1889 *chip = card->private_data;
796 int err;
797
798 err = pcim_enable_device(pci);
799 if (err < 0)
800 return err;
801
802 /* check PCI availability (32bit DMA) */
803 if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) {
804 dev_err(card->dev, "error setting 32-bit DMA mask.\n");
805 return -ENXIO;
806 }
807
808 chip->card = card;
809 chip->pci = pci;
810 chip->irq = -1;
811
812 /* (1) PCI resource allocation */
813 err = pcim_iomap_regions(pci, 1 << 0, card->driver);
814 if (err < 0)
815 return err;
816
817 chip->bar = pci_resource_start(pci, 0);
818 chip->iobase = pcim_iomap_table(pci)[0];
819
820 pci_set_master(pci);
821
822 spin_lock_init(&chip->lock); /* only now can we call ad1889_free */
823
824 if (devm_request_irq(&pci->dev, pci->irq, snd_ad1889_interrupt,
825 IRQF_SHARED, KBUILD_MODNAME, chip)) {
826 dev_err(card->dev, "cannot obtain IRQ %d\n", pci->irq);
827 return -EBUSY;
828 }
829
830 chip->irq = pci->irq;
831 card->sync_irq = chip->irq;
832 card->private_free = snd_ad1889_free;
833
834 /* (2) initialization of the chip hardware */
835 ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */
836 ad1889_readw(chip, AD_DS_CCS); /* flush posted write */
837
838 usleep_range(10000, 11000);
839
840 /* enable Master and Target abort interrupts */
841 ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE);
842
843 return 0;
844 }
845
846 static int
847 __snd_ad1889_probe(struct pci_dev *pci,
848 const struct pci_device_id *pci_id)
849 {
850 int err;
851 static int devno;
852 struct snd_card *card;
853 struct snd_ad1889 *chip;
854
855 /* (1) */
856 if (devno >= SNDRV_CARDS)
857 return -ENODEV;
858 if (!enable[devno]) {
859 devno++;
860 return -ENOENT;
861 }
862
863 /* (2) */
864 err = snd_devm_card_new(&pci->dev, index[devno], id[devno], THIS_MODULE,
865 sizeof(*chip), &card);
866 if (err < 0)
867 return err;
868 chip = card->private_data;
869
870 strcpy(card->driver, "AD1889");
871 strcpy(card->shortname, "Analog Devices AD1889");
872
873 /* (3) */
874 err = snd_ad1889_create(card, pci);
875 if (err < 0)
876 return err;
877
878 /* (4) */
879 sprintf(card->longname, "%s at 0x%lx irq %i",
880 card->shortname, chip->bar, chip->irq);
881
882 /* (5) */
883 /* register AC97 mixer */
884 err = snd_ad1889_ac97_init(chip, ac97_quirk[devno]);
885 if (err < 0)
886 return err;
887
888 err = snd_ad1889_pcm_init(chip, 0);
889 if (err < 0)
890 return err;
891
892 /* register proc interface */
893 snd_ad1889_proc_init(chip);
894
895 /* (6) */
896 err = snd_card_register(card);
897 if (err < 0)
898 return err;
899
900 /* (7) */
901 pci_set_drvdata(pci, card);
902
903 devno++;
904 return 0;
905 }
906
907 static int snd_ad1889_probe(struct pci_dev *pci,
908 const struct pci_device_id *pci_id)
909 {
910 return snd_card_free_on_error(&pci->dev, __snd_ad1889_probe(pci, pci_id));
911 }
912
913 static const struct pci_device_id snd_ad1889_ids[] = {
914 { PCI_DEVICE(PCI_VENDOR_ID_ANALOG_DEVICES, PCI_DEVICE_ID_AD1889JS) },
915 { 0, },
916 };
917 MODULE_DEVICE_TABLE(pci, snd_ad1889_ids);
918
919 static struct pci_driver ad1889_pci_driver = {
920 .name = KBUILD_MODNAME,
921 .id_table = snd_ad1889_ids,
922 .probe = snd_ad1889_probe,
923 };
924
925 module_pci_driver(ad1889_pci_driver);
926
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