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DECnet: don't leak uninitialized stack byte
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / sound / pci / ad1889.c
blob4382d0fa6b9a374c05f3eb674ed82e7d4f9cf7e0
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 *alot* 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
43 #include <sound/core.h>
44 #include <sound/pcm.h>
45 #include <sound/initval.h>
46 #include <sound/ac97_codec.h>
47
48 #include <asm/io.h>
49
50 #include "ad1889.h"
51 #include "ac97/ac97_id.h"
52
53 #define AD1889_DRVVER "Version: 1.7"
54
55 MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>, Thibaut Varene <t-bone@parisc-linux.org>");
56 MODULE_DESCRIPTION("Analog Devices AD1889 ALSA sound driver");
57 MODULE_LICENSE("GPL");
58 MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1889}}");
59
60 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
61 module_param_array(index, int, NULL, 0444);
62 MODULE_PARM_DESC(index, "Index value for the AD1889 soundcard.");
63
64 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
65 module_param_array(id, charp, NULL, 0444);
66 MODULE_PARM_DESC(id, "ID string for the AD1889 soundcard.");
67
68 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
69 module_param_array(enable, bool, NULL, 0444);
70 MODULE_PARM_DESC(enable, "Enable AD1889 soundcard.");
71
72 static char *ac97_quirk[SNDRV_CARDS];
73 module_param_array(ac97_quirk, charp, NULL, 0444);
74 MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
75
76 #define DEVNAME "ad1889"
77 #define PFX DEVNAME ": "
78
79 /* let's use the global sound debug interfaces */
80 #define ad1889_debug(fmt, arg...) snd_printd(KERN_DEBUG fmt, ## arg)
81
82 /* keep track of some hw registers */
83 struct ad1889_register_state {
84 u16 reg; /* reg setup */
85 u32 addr; /* dma base address */
86 unsigned long size; /* DMA buffer size */
87 };
88
89 struct snd_ad1889 {
90 struct snd_card *card;
91 struct pci_dev *pci;
92
93 int irq;
94 unsigned long bar;
95 void __iomem *iobase;
96
97 struct snd_ac97 *ac97;
98 struct snd_ac97_bus *ac97_bus;
99 struct snd_pcm *pcm;
100 struct snd_info_entry *proc;
101
102 struct snd_pcm_substream *psubs;
103 struct snd_pcm_substream *csubs;
104
105 /* playback register state */
106 struct ad1889_register_state wave;
107 struct ad1889_register_state ramc;
108
109 spinlock_t lock;
110 };
111
112 static inline u16
113 ad1889_readw(struct snd_ad1889 *chip, unsigned reg)
114 {
115 return readw(chip->iobase + reg);
116 }
117
118 static inline void
119 ad1889_writew(struct snd_ad1889 *chip, unsigned reg, u16 val)
120 {
121 writew(val, chip->iobase + reg);
122 }
123
124 static inline u32
125 ad1889_readl(struct snd_ad1889 *chip, unsigned reg)
126 {
127 return readl(chip->iobase + reg);
128 }
129
130 static inline void
131 ad1889_writel(struct snd_ad1889 *chip, unsigned reg, u32 val)
132 {
133 writel(val, chip->iobase + reg);
134 }
135
136 static inline void
137 ad1889_unmute(struct snd_ad1889 *chip)
138 {
139 u16 st;
140 st = ad1889_readw(chip, AD_DS_WADA) &
141 ~(AD_DS_WADA_RWAM | AD_DS_WADA_LWAM);
142 ad1889_writew(chip, AD_DS_WADA, st);
143 ad1889_readw(chip, AD_DS_WADA);
144 }
145
146 static inline void
147 ad1889_mute(struct snd_ad1889 *chip)
148 {
149 u16 st;
150 st = ad1889_readw(chip, AD_DS_WADA) | AD_DS_WADA_RWAM | AD_DS_WADA_LWAM;
151 ad1889_writew(chip, AD_DS_WADA, st);
152 ad1889_readw(chip, AD_DS_WADA);
153 }
154
155 static inline void
156 ad1889_load_adc_buffer_address(struct snd_ad1889 *chip, u32 address)
157 {
158 ad1889_writel(chip, AD_DMA_ADCBA, address);
159 ad1889_writel(chip, AD_DMA_ADCCA, address);
160 }
161
162 static inline void
163 ad1889_load_adc_buffer_count(struct snd_ad1889 *chip, u32 count)
164 {
165 ad1889_writel(chip, AD_DMA_ADCBC, count);
166 ad1889_writel(chip, AD_DMA_ADCCC, count);
167 }
168
169 static inline void
170 ad1889_load_adc_interrupt_count(struct snd_ad1889 *chip, u32 count)
171 {
172 ad1889_writel(chip, AD_DMA_ADCIB, count);
173 ad1889_writel(chip, AD_DMA_ADCIC, count);
174 }
175
176 static inline void
177 ad1889_load_wave_buffer_address(struct snd_ad1889 *chip, u32 address)
178 {
179 ad1889_writel(chip, AD_DMA_WAVBA, address);
180 ad1889_writel(chip, AD_DMA_WAVCA, address);
181 }
182
183 static inline void
184 ad1889_load_wave_buffer_count(struct snd_ad1889 *chip, u32 count)
185 {
186 ad1889_writel(chip, AD_DMA_WAVBC, count);
187 ad1889_writel(chip, AD_DMA_WAVCC, count);
188 }
189
190 static inline void
191 ad1889_load_wave_interrupt_count(struct snd_ad1889 *chip, u32 count)
192 {
193 ad1889_writel(chip, AD_DMA_WAVIB, count);
194 ad1889_writel(chip, AD_DMA_WAVIC, count);
195 }
196
197 static void
198 ad1889_channel_reset(struct snd_ad1889 *chip, unsigned int channel)
199 {
200 u16 reg;
201
202 if (channel & AD_CHAN_WAV) {
203 /* Disable wave channel */
204 reg = ad1889_readw(chip, AD_DS_WSMC) & ~AD_DS_WSMC_WAEN;
205 ad1889_writew(chip, AD_DS_WSMC, reg);
206 chip->wave.reg = reg;
207
208 /* disable IRQs */
209 reg = ad1889_readw(chip, AD_DMA_WAV);
210 reg &= AD_DMA_IM_DIS;
211 reg &= ~AD_DMA_LOOP;
212 ad1889_writew(chip, AD_DMA_WAV, reg);
213
214 /* clear IRQ and address counters and pointers */
215 ad1889_load_wave_buffer_address(chip, 0x0);
216 ad1889_load_wave_buffer_count(chip, 0x0);
217 ad1889_load_wave_interrupt_count(chip, 0x0);
218
219 /* flush */
220 ad1889_readw(chip, AD_DMA_WAV);
221 }
222
223 if (channel & AD_CHAN_ADC) {
224 /* Disable ADC channel */
225 reg = ad1889_readw(chip, AD_DS_RAMC) & ~AD_DS_RAMC_ADEN;
226 ad1889_writew(chip, AD_DS_RAMC, reg);
227 chip->ramc.reg = reg;
228
229 reg = ad1889_readw(chip, AD_DMA_ADC);
230 reg &= AD_DMA_IM_DIS;
231 reg &= ~AD_DMA_LOOP;
232 ad1889_writew(chip, AD_DMA_ADC, reg);
233
234 ad1889_load_adc_buffer_address(chip, 0x0);
235 ad1889_load_adc_buffer_count(chip, 0x0);
236 ad1889_load_adc_interrupt_count(chip, 0x0);
237
238 /* flush */
239 ad1889_readw(chip, AD_DMA_ADC);
240 }
241 }
242
243 static u16
244 snd_ad1889_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
245 {
246 struct snd_ad1889 *chip = ac97->private_data;
247 return ad1889_readw(chip, AD_AC97_BASE + reg);
248 }
249
250 static void
251 snd_ad1889_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val)
252 {
253 struct snd_ad1889 *chip = ac97->private_data;
254 ad1889_writew(chip, AD_AC97_BASE + reg, val);
255 }
256
257 static int
258 snd_ad1889_ac97_ready(struct snd_ad1889 *chip)
259 {
260 int retry = 400; /* average needs 352 msec */
261
262 while (!(ad1889_readw(chip, AD_AC97_ACIC) & AD_AC97_ACIC_ACRDY)
263 && --retry)
264 mdelay(1);
265 if (!retry) {
266 snd_printk(KERN_ERR PFX "[%s] Link is not ready.\n",
267 __func__);
268 return -EIO;
269 }
270 ad1889_debug("[%s] ready after %d ms\n", __func__, 400 - retry);
271
272 return 0;
273 }
274
275 static int
276 snd_ad1889_hw_params(struct snd_pcm_substream *substream,
277 struct snd_pcm_hw_params *hw_params)
278 {
279 return snd_pcm_lib_malloc_pages(substream,
280 params_buffer_bytes(hw_params));
281 }
282
283 static int
284 snd_ad1889_hw_free(struct snd_pcm_substream *substream)
285 {
286 return snd_pcm_lib_free_pages(substream);
287 }
288
289 static struct snd_pcm_hardware snd_ad1889_playback_hw = {
290 .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
291 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
292 .formats = SNDRV_PCM_FMTBIT_S16_LE,
293 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
294 .rate_min = 8000, /* docs say 7000, but we're lazy */
295 .rate_max = 48000,
296 .channels_min = 1,
297 .channels_max = 2,
298 .buffer_bytes_max = BUFFER_BYTES_MAX,
299 .period_bytes_min = PERIOD_BYTES_MIN,
300 .period_bytes_max = PERIOD_BYTES_MAX,
301 .periods_min = PERIODS_MIN,
302 .periods_max = PERIODS_MAX,
303 /*.fifo_size = 0,*/
304 };
305
306 static struct snd_pcm_hardware snd_ad1889_capture_hw = {
307 .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
308 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER,
309 .formats = SNDRV_PCM_FMTBIT_S16_LE,
310 .rates = SNDRV_PCM_RATE_48000,
311 .rate_min = 48000, /* docs say we could to VSR, but we're lazy */
312 .rate_max = 48000,
313 .channels_min = 1,
314 .channels_max = 2,
315 .buffer_bytes_max = BUFFER_BYTES_MAX,
316 .period_bytes_min = PERIOD_BYTES_MIN,
317 .period_bytes_max = PERIOD_BYTES_MAX,
318 .periods_min = PERIODS_MIN,
319 .periods_max = PERIODS_MAX,
320 /*.fifo_size = 0,*/
321 };
322
323 static int
324 snd_ad1889_playback_open(struct snd_pcm_substream *ss)
325 {
326 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
327 struct snd_pcm_runtime *rt = ss->runtime;
328
329 chip->psubs = ss;
330 rt->hw = snd_ad1889_playback_hw;
331
332 return 0;
333 }
334
335 static int
336 snd_ad1889_capture_open(struct snd_pcm_substream *ss)
337 {
338 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
339 struct snd_pcm_runtime *rt = ss->runtime;
340
341 chip->csubs = ss;
342 rt->hw = snd_ad1889_capture_hw;
343
344 return 0;
345 }
346
347 static int
348 snd_ad1889_playback_close(struct snd_pcm_substream *ss)
349 {
350 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
351 chip->psubs = NULL;
352 return 0;
353 }
354
355 static int
356 snd_ad1889_capture_close(struct snd_pcm_substream *ss)
357 {
358 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
359 chip->csubs = NULL;
360 return 0;
361 }
362
363 static int
364 snd_ad1889_playback_prepare(struct snd_pcm_substream *ss)
365 {
366 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
367 struct snd_pcm_runtime *rt = ss->runtime;
368 unsigned int size = snd_pcm_lib_buffer_bytes(ss);
369 unsigned int count = snd_pcm_lib_period_bytes(ss);
370 u16 reg;
371
372 ad1889_channel_reset(chip, AD_CHAN_WAV);
373
374 reg = ad1889_readw(chip, AD_DS_WSMC);
375
376 /* Mask out 16-bit / Stereo */
377 reg &= ~(AD_DS_WSMC_WA16 | AD_DS_WSMC_WAST);
378
379 if (snd_pcm_format_width(rt->format) == 16)
380 reg |= AD_DS_WSMC_WA16;
381
382 if (rt->channels > 1)
383 reg |= AD_DS_WSMC_WAST;
384
385 /* let's make sure we don't clobber ourselves */
386 spin_lock_irq(&chip->lock);
387
388 chip->wave.size = size;
389 chip->wave.reg = reg;
390 chip->wave.addr = rt->dma_addr;
391
392 ad1889_writew(chip, AD_DS_WSMC, chip->wave.reg);
393
394 /* Set sample rates on the codec */
395 ad1889_writew(chip, AD_DS_WAS, rt->rate);
396
397 /* Set up DMA */
398 ad1889_load_wave_buffer_address(chip, chip->wave.addr);
399 ad1889_load_wave_buffer_count(chip, size);
400 ad1889_load_wave_interrupt_count(chip, count);
401
402 /* writes flush */
403 ad1889_readw(chip, AD_DS_WSMC);
404
405 spin_unlock_irq(&chip->lock);
406
407 ad1889_debug("prepare playback: addr = 0x%x, count = %u, "
408 "size = %u, reg = 0x%x, rate = %u\n", chip->wave.addr,
409 count, size, reg, rt->rate);
410 return 0;
411 }
412
413 static int
414 snd_ad1889_capture_prepare(struct snd_pcm_substream *ss)
415 {
416 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
417 struct snd_pcm_runtime *rt = ss->runtime;
418 unsigned int size = snd_pcm_lib_buffer_bytes(ss);
419 unsigned int count = snd_pcm_lib_period_bytes(ss);
420 u16 reg;
421
422 ad1889_channel_reset(chip, AD_CHAN_ADC);
423
424 reg = ad1889_readw(chip, AD_DS_RAMC);
425
426 /* Mask out 16-bit / Stereo */
427 reg &= ~(AD_DS_RAMC_AD16 | AD_DS_RAMC_ADST);
428
429 if (snd_pcm_format_width(rt->format) == 16)
430 reg |= AD_DS_RAMC_AD16;
431
432 if (rt->channels > 1)
433 reg |= AD_DS_RAMC_ADST;
434
435 /* let's make sure we don't clobber ourselves */
436 spin_lock_irq(&chip->lock);
437
438 chip->ramc.size = size;
439 chip->ramc.reg = reg;
440 chip->ramc.addr = rt->dma_addr;
441
442 ad1889_writew(chip, AD_DS_RAMC, chip->ramc.reg);
443
444 /* Set up DMA */
445 ad1889_load_adc_buffer_address(chip, chip->ramc.addr);
446 ad1889_load_adc_buffer_count(chip, size);
447 ad1889_load_adc_interrupt_count(chip, count);
448
449 /* writes flush */
450 ad1889_readw(chip, AD_DS_RAMC);
451
452 spin_unlock_irq(&chip->lock);
453
454 ad1889_debug("prepare capture: addr = 0x%x, count = %u, "
455 "size = %u, reg = 0x%x, rate = %u\n", chip->ramc.addr,
456 count, size, reg, rt->rate);
457 return 0;
458 }
459
460 /* this is called in atomic context with IRQ disabled.
461 Must be as fast as possible and not sleep.
462 DMA should be *triggered* by this call.
463 The WSMC "WAEN" bit triggers DMA Wave On/Off */
464 static int
465 snd_ad1889_playback_trigger(struct snd_pcm_substream *ss, int cmd)
466 {
467 u16 wsmc;
468 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
469
470 wsmc = ad1889_readw(chip, AD_DS_WSMC);
471
472 switch (cmd) {
473 case SNDRV_PCM_TRIGGER_START:
474 /* enable DMA loop & interrupts */
475 ad1889_writew(chip, AD_DMA_WAV, AD_DMA_LOOP | AD_DMA_IM_CNT);
476 wsmc |= AD_DS_WSMC_WAEN;
477 /* 1 to clear CHSS bit */
478 ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_WAVS);
479 ad1889_unmute(chip);
480 break;
481 case SNDRV_PCM_TRIGGER_STOP:
482 ad1889_mute(chip);
483 wsmc &= ~AD_DS_WSMC_WAEN;
484 break;
485 default:
486 snd_BUG();
487 return -EINVAL;
488 }
489
490 chip->wave.reg = wsmc;
491 ad1889_writew(chip, AD_DS_WSMC, wsmc);
492 ad1889_readw(chip, AD_DS_WSMC); /* flush */
493
494 /* reset the chip when STOP - will disable IRQs */
495 if (cmd == SNDRV_PCM_TRIGGER_STOP)
496 ad1889_channel_reset(chip, AD_CHAN_WAV);
497
498 return 0;
499 }
500
501 /* this is called in atomic context with IRQ disabled.
502 Must be as fast as possible and not sleep.
503 DMA should be *triggered* by this call.
504 The RAMC "ADEN" bit triggers DMA ADC On/Off */
505 static int
506 snd_ad1889_capture_trigger(struct snd_pcm_substream *ss, int cmd)
507 {
508 u16 ramc;
509 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
510
511 ramc = ad1889_readw(chip, AD_DS_RAMC);
512
513 switch (cmd) {
514 case SNDRV_PCM_TRIGGER_START:
515 /* enable DMA loop & interrupts */
516 ad1889_writew(chip, AD_DMA_ADC, AD_DMA_LOOP | AD_DMA_IM_CNT);
517 ramc |= AD_DS_RAMC_ADEN;
518 /* 1 to clear CHSS bit */
519 ad1889_writel(chip, AD_DMA_CHSS, AD_DMA_CHSS_ADCS);
520 break;
521 case SNDRV_PCM_TRIGGER_STOP:
522 ramc &= ~AD_DS_RAMC_ADEN;
523 break;
524 default:
525 return -EINVAL;
526 }
527
528 chip->ramc.reg = ramc;
529 ad1889_writew(chip, AD_DS_RAMC, ramc);
530 ad1889_readw(chip, AD_DS_RAMC); /* flush */
531
532 /* reset the chip when STOP - will disable IRQs */
533 if (cmd == SNDRV_PCM_TRIGGER_STOP)
534 ad1889_channel_reset(chip, AD_CHAN_ADC);
535
536 return 0;
537 }
538
539 /* Called in atomic context with IRQ disabled */
540 static snd_pcm_uframes_t
541 snd_ad1889_playback_pointer(struct snd_pcm_substream *ss)
542 {
543 size_t ptr = 0;
544 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
545
546 if (unlikely(!(chip->wave.reg & AD_DS_WSMC_WAEN)))
547 return 0;
548
549 ptr = ad1889_readl(chip, AD_DMA_WAVCA);
550 ptr -= chip->wave.addr;
551
552 if (snd_BUG_ON(ptr >= chip->wave.size))
553 return 0;
554
555 return bytes_to_frames(ss->runtime, ptr);
556 }
557
558 /* Called in atomic context with IRQ disabled */
559 static snd_pcm_uframes_t
560 snd_ad1889_capture_pointer(struct snd_pcm_substream *ss)
561 {
562 size_t ptr = 0;
563 struct snd_ad1889 *chip = snd_pcm_substream_chip(ss);
564
565 if (unlikely(!(chip->ramc.reg & AD_DS_RAMC_ADEN)))
566 return 0;
567
568 ptr = ad1889_readl(chip, AD_DMA_ADCCA);
569 ptr -= chip->ramc.addr;
570
571 if (snd_BUG_ON(ptr >= chip->ramc.size))
572 return 0;
573
574 return bytes_to_frames(ss->runtime, ptr);
575 }
576
577 static struct snd_pcm_ops snd_ad1889_playback_ops = {
578 .open = snd_ad1889_playback_open,
579 .close = snd_ad1889_playback_close,
580 .ioctl = snd_pcm_lib_ioctl,
581 .hw_params = snd_ad1889_hw_params,
582 .hw_free = snd_ad1889_hw_free,
583 .prepare = snd_ad1889_playback_prepare,
584 .trigger = snd_ad1889_playback_trigger,
585 .pointer = snd_ad1889_playback_pointer,
586 };
587
588 static struct snd_pcm_ops snd_ad1889_capture_ops = {
589 .open = snd_ad1889_capture_open,
590 .close = snd_ad1889_capture_close,
591 .ioctl = snd_pcm_lib_ioctl,
592 .hw_params = snd_ad1889_hw_params,
593 .hw_free = snd_ad1889_hw_free,
594 .prepare = snd_ad1889_capture_prepare,
595 .trigger = snd_ad1889_capture_trigger,
596 .pointer = snd_ad1889_capture_pointer,
597 };
598
599 static irqreturn_t
600 snd_ad1889_interrupt(int irq, void *dev_id)
601 {
602 unsigned long st;
603 struct snd_ad1889 *chip = dev_id;
604
605 st = ad1889_readl(chip, AD_DMA_DISR);
606
607 /* clear ISR */
608 ad1889_writel(chip, AD_DMA_DISR, st);
609
610 st &= AD_INTR_MASK;
611
612 if (unlikely(!st))
613 return IRQ_NONE;
614
615 if (st & (AD_DMA_DISR_PMAI|AD_DMA_DISR_PTAI))
616 ad1889_debug("Unexpected master or target abort interrupt!\n");
617
618 if ((st & AD_DMA_DISR_WAVI) && chip->psubs)
619 snd_pcm_period_elapsed(chip->psubs);
620 if ((st & AD_DMA_DISR_ADCI) && chip->csubs)
621 snd_pcm_period_elapsed(chip->csubs);
622
623 return IRQ_HANDLED;
624 }
625
626 static int __devinit
627 snd_ad1889_pcm_init(struct snd_ad1889 *chip, int device, struct snd_pcm **rpcm)
628 {
629 int err;
630 struct snd_pcm *pcm;
631
632 if (rpcm)
633 *rpcm = NULL;
634
635 err = snd_pcm_new(chip->card, chip->card->driver, device, 1, 1, &pcm);
636 if (err < 0)
637 return err;
638
639 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
640 &snd_ad1889_playback_ops);
641 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
642 &snd_ad1889_capture_ops);
643
644 pcm->private_data = chip;
645 pcm->info_flags = 0;
646 strcpy(pcm->name, chip->card->shortname);
647
648 chip->pcm = pcm;
649 chip->psubs = NULL;
650 chip->csubs = NULL;
651
652 err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
653 snd_dma_pci_data(chip->pci),
654 BUFFER_BYTES_MAX / 2,
655 BUFFER_BYTES_MAX);
656
657 if (err < 0) {
658 snd_printk(KERN_ERR PFX "buffer allocation error: %d\n", err);
659 return err;
660 }
661
662 if (rpcm)
663 *rpcm = pcm;
664
665 return 0;
666 }
667
668 static void
669 snd_ad1889_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
670 {
671 struct snd_ad1889 *chip = entry->private_data;
672 u16 reg;
673 int tmp;
674
675 reg = ad1889_readw(chip, AD_DS_WSMC);
676 snd_iprintf(buffer, "Wave output: %s\n",
677 (reg & AD_DS_WSMC_WAEN) ? "enabled" : "disabled");
678 snd_iprintf(buffer, "Wave Channels: %s\n",
679 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
680 snd_iprintf(buffer, "Wave Quality: %d-bit linear\n",
681 (reg & AD_DS_WSMC_WA16) ? 16 : 8);
682
683 /* WARQ is at offset 12 */
684 tmp = (reg & AD_DS_WSMC_WARQ) ?
685 (((reg & AD_DS_WSMC_WARQ >> 12) & 0x01) ? 12 : 18) : 4;
686 tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
687
688 snd_iprintf(buffer, "Wave FIFO: %d %s words\n\n", tmp,
689 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
690
691
692 snd_iprintf(buffer, "Synthesis output: %s\n",
693 reg & AD_DS_WSMC_SYEN ? "enabled" : "disabled");
694
695 /* SYRQ is at offset 4 */
696 tmp = (reg & AD_DS_WSMC_SYRQ) ?
697 (((reg & AD_DS_WSMC_SYRQ >> 4) & 0x01) ? 12 : 18) : 4;
698 tmp /= (reg & AD_DS_WSMC_WAST) ? 2 : 1;
699
700 snd_iprintf(buffer, "Synthesis FIFO: %d %s words\n\n", tmp,
701 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
702
703 reg = ad1889_readw(chip, AD_DS_RAMC);
704 snd_iprintf(buffer, "ADC input: %s\n",
705 (reg & AD_DS_RAMC_ADEN) ? "enabled" : "disabled");
706 snd_iprintf(buffer, "ADC Channels: %s\n",
707 (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
708 snd_iprintf(buffer, "ADC Quality: %d-bit linear\n",
709 (reg & AD_DS_RAMC_AD16) ? 16 : 8);
710
711 /* ACRQ is at offset 4 */
712 tmp = (reg & AD_DS_RAMC_ACRQ) ?
713 (((reg & AD_DS_RAMC_ACRQ >> 4) & 0x01) ? 12 : 18) : 4;
714 tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
715
716 snd_iprintf(buffer, "ADC FIFO: %d %s words\n\n", tmp,
717 (reg & AD_DS_RAMC_ADST) ? "stereo" : "mono");
718
719 snd_iprintf(buffer, "Resampler input: %s\n",
720 reg & AD_DS_RAMC_REEN ? "enabled" : "disabled");
721
722 /* RERQ is at offset 12 */
723 tmp = (reg & AD_DS_RAMC_RERQ) ?
724 (((reg & AD_DS_RAMC_RERQ >> 12) & 0x01) ? 12 : 18) : 4;
725 tmp /= (reg & AD_DS_RAMC_ADST) ? 2 : 1;
726
727 snd_iprintf(buffer, "Resampler FIFO: %d %s words\n\n", tmp,
728 (reg & AD_DS_WSMC_WAST) ? "stereo" : "mono");
729
730
731 /* doc says LSB represents -1.5dB, but the max value (-94.5dB)
732 suggests that LSB is -3dB, which is more coherent with the logarithmic
733 nature of the dB scale */
734 reg = ad1889_readw(chip, AD_DS_WADA);
735 snd_iprintf(buffer, "Left: %s, -%d dB\n",
736 (reg & AD_DS_WADA_LWAM) ? "mute" : "unmute",
737 ((reg & AD_DS_WADA_LWAA) >> 8) * 3);
738 reg = ad1889_readw(chip, AD_DS_WADA);
739 snd_iprintf(buffer, "Right: %s, -%d dB\n",
740 (reg & AD_DS_WADA_RWAM) ? "mute" : "unmute",
741 ((reg & AD_DS_WADA_RWAA) >> 8) * 3);
742
743 reg = ad1889_readw(chip, AD_DS_WAS);
744 snd_iprintf(buffer, "Wave samplerate: %u Hz\n", reg);
745 reg = ad1889_readw(chip, AD_DS_RES);
746 snd_iprintf(buffer, "Resampler samplerate: %u Hz\n", reg);
747 }
748
749 static void __devinit
750 snd_ad1889_proc_init(struct snd_ad1889 *chip)
751 {
752 struct snd_info_entry *entry;
753
754 if (!snd_card_proc_new(chip->card, chip->card->driver, &entry))
755 snd_info_set_text_ops(entry, chip, snd_ad1889_proc_read);
756 }
757
758 static struct ac97_quirk ac97_quirks[] = {
759 {
760 .subvendor = 0x11d4, /* AD */
761 .subdevice = 0x1889, /* AD1889 */
762 .codec_id = AC97_ID_AD1819,
763 .name = "AD1889",
764 .type = AC97_TUNE_HP_ONLY
765 },
766 { } /* terminator */
767 };
768
769 static void __devinit
770 snd_ad1889_ac97_xinit(struct snd_ad1889 *chip)
771 {
772 u16 reg;
773
774 reg = ad1889_readw(chip, AD_AC97_ACIC);
775 reg |= AD_AC97_ACIC_ACRD; /* Reset Disable */
776 ad1889_writew(chip, AD_AC97_ACIC, reg);
777 ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
778 udelay(10);
779 /* Interface Enable */
780 reg |= AD_AC97_ACIC_ACIE;
781 ad1889_writew(chip, AD_AC97_ACIC, reg);
782
783 snd_ad1889_ac97_ready(chip);
784
785 /* Audio Stream Output | Variable Sample Rate Mode */
786 reg = ad1889_readw(chip, AD_AC97_ACIC);
787 reg |= AD_AC97_ACIC_ASOE | AD_AC97_ACIC_VSRM;
788 ad1889_writew(chip, AD_AC97_ACIC, reg);
789 ad1889_readw(chip, AD_AC97_ACIC); /* flush posted write */
790
791 }
792
793 static void
794 snd_ad1889_ac97_bus_free(struct snd_ac97_bus *bus)
795 {
796 struct snd_ad1889 *chip = bus->private_data;
797 chip->ac97_bus = NULL;
798 }
799
800 static void
801 snd_ad1889_ac97_free(struct snd_ac97 *ac97)
802 {
803 struct snd_ad1889 *chip = ac97->private_data;
804 chip->ac97 = NULL;
805 }
806
807 static int __devinit
808 snd_ad1889_ac97_init(struct snd_ad1889 *chip, const char *quirk_override)
809 {
810 int err;
811 struct snd_ac97_template ac97;
812 static struct snd_ac97_bus_ops ops = {
813 .write = snd_ad1889_ac97_write,
814 .read = snd_ad1889_ac97_read,
815 };
816
817 /* doing that here, it works. */
818 snd_ad1889_ac97_xinit(chip);
819
820 err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus);
821 if (err < 0)
822 return err;
823
824 chip->ac97_bus->private_free = snd_ad1889_ac97_bus_free;
825
826 memset(&ac97, 0, sizeof(ac97));
827 ac97.private_data = chip;
828 ac97.private_free = snd_ad1889_ac97_free;
829 ac97.pci = chip->pci;
830
831 err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97);
832 if (err < 0)
833 return err;
834
835 snd_ac97_tune_hardware(chip->ac97, ac97_quirks, quirk_override);
836
837 return 0;
838 }
839
840 static int
841 snd_ad1889_free(struct snd_ad1889 *chip)
842 {
843 if (chip->irq < 0)
844 goto skip_hw;
845
846 spin_lock_irq(&chip->lock);
847
848 ad1889_mute(chip);
849
850 /* Turn off interrupt on count and zero DMA registers */
851 ad1889_channel_reset(chip, AD_CHAN_WAV | AD_CHAN_ADC);
852
853 /* clear DISR. If we don't, we'd better jump off the Eiffel Tower */
854 ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PTAI | AD_DMA_DISR_PMAI);
855 ad1889_readl(chip, AD_DMA_DISR); /* flush, dammit! */
856
857 spin_unlock_irq(&chip->lock);
858
859 if (chip->irq >= 0)
860 free_irq(chip->irq, chip);
861
862 skip_hw:
863 if (chip->iobase)
864 iounmap(chip->iobase);
865
866 pci_release_regions(chip->pci);
867 pci_disable_device(chip->pci);
868
869 kfree(chip);
870 return 0;
871 }
872
873 static int
874 snd_ad1889_dev_free(struct snd_device *device)
875 {
876 struct snd_ad1889 *chip = device->device_data;
877 return snd_ad1889_free(chip);
878 }
879
880 static int __devinit
881 snd_ad1889_init(struct snd_ad1889 *chip)
882 {
883 ad1889_writew(chip, AD_DS_CCS, AD_DS_CCS_CLKEN); /* turn on clock */
884 ad1889_readw(chip, AD_DS_CCS); /* flush posted write */
885
886 mdelay(10);
887
888 /* enable Master and Target abort interrupts */
889 ad1889_writel(chip, AD_DMA_DISR, AD_DMA_DISR_PMAE | AD_DMA_DISR_PTAE);
890
891 return 0;
892 }
893
894 static int __devinit
895 snd_ad1889_create(struct snd_card *card,
896 struct pci_dev *pci,
897 struct snd_ad1889 **rchip)
898 {
899 int err;
900
901 struct snd_ad1889 *chip;
902 static struct snd_device_ops ops = {
903 .dev_free = snd_ad1889_dev_free,
904 };
905
906 *rchip = NULL;
907
908 if ((err = pci_enable_device(pci)) < 0)
909 return err;
910
911 /* check PCI availability (32bit DMA) */
912 if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 ||
913 pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
914 printk(KERN_ERR PFX "error setting 32-bit DMA mask.\n");
915 pci_disable_device(pci);
916 return -ENXIO;
917 }
918
919 /* allocate chip specific data with zero-filled memory */
920 if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) {
921 pci_disable_device(pci);
922 return -ENOMEM;
923 }
924
925 chip->card = card;
926 card->private_data = chip;
927 chip->pci = pci;
928 chip->irq = -1;
929
930 /* (1) PCI resource allocation */
931 if ((err = pci_request_regions(pci, card->driver)) < 0)
932 goto free_and_ret;
933
934 chip->bar = pci_resource_start(pci, 0);
935 chip->iobase = pci_ioremap_bar(pci, 0);
936 if (chip->iobase == NULL) {
937 printk(KERN_ERR PFX "unable to reserve region.\n");
938 err = -EBUSY;
939 goto free_and_ret;
940 }
941
942 pci_set_master(pci);
943
944 spin_lock_init(&chip->lock); /* only now can we call ad1889_free */
945
946 if (request_irq(pci->irq, snd_ad1889_interrupt,
947 IRQF_SHARED, card->driver, chip)) {
948 printk(KERN_ERR PFX "cannot obtain IRQ %d\n", pci->irq);
949 snd_ad1889_free(chip);
950 return -EBUSY;
951 }
952
953 chip->irq = pci->irq;
954 synchronize_irq(chip->irq);
955
956 /* (2) initialization of the chip hardware */
957 if ((err = snd_ad1889_init(chip)) < 0) {
958 snd_ad1889_free(chip);
959 return err;
960 }
961
962 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
963 snd_ad1889_free(chip);
964 return err;
965 }
966
967 snd_card_set_dev(card, &pci->dev);
968
969 *rchip = chip;
970
971 return 0;
972
973 free_and_ret:
974 kfree(chip);
975 pci_disable_device(pci);
976
977 return err;
978 }
979
980 static int __devinit
981 snd_ad1889_probe(struct pci_dev *pci,
982 const struct pci_device_id *pci_id)
983 {
984 int err;
985 static int devno;
986 struct snd_card *card;
987 struct snd_ad1889 *chip;
988
989 /* (1) */
990 if (devno >= SNDRV_CARDS)
991 return -ENODEV;
992 if (!enable[devno]) {
993 devno++;
994 return -ENOENT;
995 }
996
997 /* (2) */
998 err = snd_card_create(index[devno], id[devno], THIS_MODULE, 0, &card);
999 /* XXX REVISIT: we can probably allocate chip in this call */
1000 if (err < 0)
1001 return err;
1002
1003 strcpy(card->driver, "AD1889");
1004 strcpy(card->shortname, "Analog Devices AD1889");
1005
1006 /* (3) */
1007 err = snd_ad1889_create(card, pci, &chip);
1008 if (err < 0)
1009 goto free_and_ret;
1010
1011 /* (4) */
1012 sprintf(card->longname, "%s at 0x%lx irq %i",
1013 card->shortname, chip->bar, chip->irq);
1014
1015 /* (5) */
1016 /* register AC97 mixer */
1017 err = snd_ad1889_ac97_init(chip, ac97_quirk[devno]);
1018 if (err < 0)
1019 goto free_and_ret;
1020
1021 err = snd_ad1889_pcm_init(chip, 0, NULL);
1022 if (err < 0)
1023 goto free_and_ret;
1024
1025 /* register proc interface */
1026 snd_ad1889_proc_init(chip);
1027
1028 /* (6) */
1029 err = snd_card_register(card);
1030 if (err < 0)
1031 goto free_and_ret;
1032
1033 /* (7) */
1034 pci_set_drvdata(pci, card);
1035
1036 devno++;
1037 return 0;
1038
1039 free_and_ret:
1040 snd_card_free(card);
1041 return err;
1042 }
1043
1044 static void __devexit
1045 snd_ad1889_remove(struct pci_dev *pci)
1046 {
1047 snd_card_free(pci_get_drvdata(pci));
1048 pci_set_drvdata(pci, NULL);
1049 }
1050
1051 static DEFINE_PCI_DEVICE_TABLE(snd_ad1889_ids) = {
1052 { PCI_DEVICE(PCI_VENDOR_ID_ANALOG_DEVICES, PCI_DEVICE_ID_AD1889JS) },
1053 { 0, },
1054 };
1055 MODULE_DEVICE_TABLE(pci, snd_ad1889_ids);
1056
1057 static struct pci_driver ad1889_pci_driver = {
1058 .name = "AD1889 Audio",
1059 .id_table = snd_ad1889_ids,
1060 .probe = snd_ad1889_probe,
1061 .remove = __devexit_p(snd_ad1889_remove),
1062 };
1063
1064 static int __init
1065 alsa_ad1889_init(void)
1066 {
1067 return pci_register_driver(&ad1889_pci_driver);
1068 }
1069
1070 static void __exit
1071 alsa_ad1889_fini(void)
1072 {
1073 pci_unregister_driver(&ad1889_pci_driver);
1074 }
1075
1076 module_init(alsa_ad1889_init);
1077 module_exit(alsa_ad1889_fini);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree