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net: dsa: mt7530: set CPU port to fallback mode
[linux/fpc-iii.git] / sound / pci / nm256 / nm256.c
blobb97f4ea6b56c810948fc39ca0845eec0a060ca87
1 /*
2 * Driver for NeoMagic 256AV and 256ZX chipsets.
3 * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>
4 *
5 * Based on nm256_audio.c OSS driver in linux kernel.
6 * The original author of OSS nm256 driver wishes to remain anonymous,
7 * so I just put my acknoledgment to him/her here.
8 * The original author's web page is found at
9 * http://www.uglx.org/sony.html
10 *
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 */
26
27 #include <linux/io.h>
28 #include <linux/delay.h>
29 #include <linux/interrupt.h>
30 #include <linux/init.h>
31 #include <linux/pci.h>
32 #include <linux/slab.h>
33 #include <linux/module.h>
34 #include <linux/mutex.h>
35
36 #include <sound/core.h>
37 #include <sound/info.h>
38 #include <sound/control.h>
39 #include <sound/pcm.h>
40 #include <sound/ac97_codec.h>
41 #include <sound/initval.h>
42
43 #define CARD_NAME "NeoMagic 256AV/ZX"
44 #define DRIVER_NAME "NM256"
45
46 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
47 MODULE_DESCRIPTION("NeoMagic NM256AV/ZX");
48 MODULE_LICENSE("GPL");
49 MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV},"
50 "{NeoMagic,NM256ZX}}");
51
52 /*
53 * some compile conditions.
54 */
55
56 static int index = SNDRV_DEFAULT_IDX1; /* Index */
57 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
58 static int playback_bufsize = 16;
59 static int capture_bufsize = 16;
60 static bool force_ac97; /* disabled as default */
61 static int buffer_top; /* not specified */
62 static bool use_cache; /* disabled */
63 static bool vaio_hack; /* disabled */
64 static bool reset_workaround;
65 static bool reset_workaround_2;
66
67 module_param(index, int, 0444);
68 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
69 module_param(id, charp, 0444);
70 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
71 module_param(playback_bufsize, int, 0444);
72 MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard.");
73 module_param(capture_bufsize, int, 0444);
74 MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard.");
75 module_param(force_ac97, bool, 0444);
76 MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard.");
77 module_param(buffer_top, int, 0444);
78 MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard.");
79 module_param(use_cache, bool, 0444);
80 MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access.");
81 module_param(vaio_hack, bool, 0444);
82 MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks.");
83 module_param(reset_workaround, bool, 0444);
84 MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops.");
85 module_param(reset_workaround_2, bool, 0444);
86 MODULE_PARM_DESC(reset_workaround_2, "Enable extended AC97 RESET workaround for some other laptops.");
87
88 /* just for backward compatibility */
89 static bool enable;
90 module_param(enable, bool, 0444);
91
92
93
94 /*
95 * hw definitions
96 */
97
98 /* The BIOS signature. */
99 #define NM_SIGNATURE 0x4e4d0000
100 /* Signature mask. */
101 #define NM_SIG_MASK 0xffff0000
102
103 /* Size of the second memory area. */
104 #define NM_PORT2_SIZE 4096
105
106 /* The base offset of the mixer in the second memory area. */
107 #define NM_MIXER_OFFSET 0x600
108
109 /* The maximum size of a coefficient entry. */
110 #define NM_MAX_PLAYBACK_COEF_SIZE 0x5000
111 #define NM_MAX_RECORD_COEF_SIZE 0x1260
112
113 /* The interrupt register. */
114 #define NM_INT_REG 0xa04
115 /* And its bits. */
116 #define NM_PLAYBACK_INT 0x40
117 #define NM_RECORD_INT 0x100
118 #define NM_MISC_INT_1 0x4000
119 #define NM_MISC_INT_2 0x1
120 #define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1)
121
122 /* The AV's "mixer ready" status bit and location. */
123 #define NM_MIXER_STATUS_OFFSET 0xa04
124 #define NM_MIXER_READY_MASK 0x0800
125 #define NM_MIXER_PRESENCE 0xa06
126 #define NM_PRESENCE_MASK 0x0050
127 #define NM_PRESENCE_VALUE 0x0040
128
129 /*
130 * For the ZX. It uses the same interrupt register, but it holds 32
131 * bits instead of 16.
132 */
133 #define NM2_PLAYBACK_INT 0x10000
134 #define NM2_RECORD_INT 0x80000
135 #define NM2_MISC_INT_1 0x8
136 #define NM2_MISC_INT_2 0x2
137 #define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X))
138
139 /* The ZX's "mixer ready" status bit and location. */
140 #define NM2_MIXER_STATUS_OFFSET 0xa06
141 #define NM2_MIXER_READY_MASK 0x0800
142
143 /* The playback registers start from here. */
144 #define NM_PLAYBACK_REG_OFFSET 0x0
145 /* The record registers start from here. */
146 #define NM_RECORD_REG_OFFSET 0x200
147
148 /* The rate register is located 2 bytes from the start of the register area. */
149 #define NM_RATE_REG_OFFSET 2
150
151 /* Mono/stereo flag, number of bits on playback, and rate mask. */
152 #define NM_RATE_STEREO 1
153 #define NM_RATE_BITS_16 2
154 #define NM_RATE_MASK 0xf0
155
156 /* Playback enable register. */
157 #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
158 #define NM_PLAYBACK_ENABLE_FLAG 1
159 #define NM_PLAYBACK_ONESHOT 2
160 #define NM_PLAYBACK_FREERUN 4
161
162 /* Mutes the audio output. */
163 #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
164 #define NM_AUDIO_MUTE_LEFT 0x8000
165 #define NM_AUDIO_MUTE_RIGHT 0x0080
166
167 /* Recording enable register. */
168 #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
169 #define NM_RECORD_ENABLE_FLAG 1
170 #define NM_RECORD_FREERUN 2
171
172 /* coefficient buffer pointer */
173 #define NM_COEFF_START_OFFSET 0x1c
174 #define NM_COEFF_END_OFFSET 0x20
175
176 /* DMA buffer offsets */
177 #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
178 #define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10)
179 #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
180 #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
181
182 #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
183 #define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14)
184 #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
185 #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
186
187 struct nm256_stream {
188
189 struct nm256 *chip;
190 struct snd_pcm_substream *substream;
191 int running;
192 int suspended;
193
194 u32 buf; /* offset from chip->buffer */
195 int bufsize; /* buffer size in bytes */
196 void __iomem *bufptr; /* mapped pointer */
197 unsigned long bufptr_addr; /* physical address of the mapped pointer */
198
199 int dma_size; /* buffer size of the substream in bytes */
200 int period_size; /* period size in bytes */
201 int periods; /* # of periods */
202 int shift; /* bit shifts */
203 int cur_period; /* current period # */
204
205 };
206
207 struct nm256 {
208
209 struct snd_card *card;
210
211 void __iomem *cport; /* control port */
212 struct resource *res_cport; /* its resource */
213 unsigned long cport_addr; /* physical address */
214
215 void __iomem *buffer; /* buffer */
216 struct resource *res_buffer; /* its resource */
217 unsigned long buffer_addr; /* buffer phyiscal address */
218
219 u32 buffer_start; /* start offset from pci resource 0 */
220 u32 buffer_end; /* end offset */
221 u32 buffer_size; /* total buffer size */
222
223 u32 all_coeff_buf; /* coefficient buffer */
224 u32 coeff_buf[2]; /* coefficient buffer for each stream */
225
226 unsigned int coeffs_current: 1; /* coeff. table is loaded? */
227 unsigned int use_cache: 1; /* use one big coef. table */
228 unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */
229 unsigned int reset_workaround_2: 1; /* Extended workaround for some other laptops to avoid freeze */
230 unsigned int in_resume: 1;
231
232 int mixer_base; /* register offset of ac97 mixer */
233 int mixer_status_offset; /* offset of mixer status reg. */
234 int mixer_status_mask; /* bit mask to test the mixer status */
235
236 int irq;
237 int irq_acks;
238 irq_handler_t interrupt;
239 int badintrcount; /* counter to check bogus interrupts */
240 struct mutex irq_mutex;
241
242 struct nm256_stream streams[2];
243
244 struct snd_ac97 *ac97;
245 unsigned short *ac97_regs; /* register caches, only for valid regs */
246
247 struct snd_pcm *pcm;
248
249 struct pci_dev *pci;
250
251 spinlock_t reg_lock;
252
253 };
254
255
256 /*
257 * include coefficient table
258 */
259 #include "nm256_coef.c"
260
261
262 /*
263 * PCI ids
264 */
265 static const struct pci_device_id snd_nm256_ids[] = {
266 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO), 0},
267 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO), 0},
268 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO), 0},
269 {0,},
270 };
271
272 MODULE_DEVICE_TABLE(pci, snd_nm256_ids);
273
274
275 /*
276 * lowlvel stuffs
277 */
278
279 static inline u8
280 snd_nm256_readb(struct nm256 *chip, int offset)
281 {
282 return readb(chip->cport + offset);
283 }
284
285 static inline u16
286 snd_nm256_readw(struct nm256 *chip, int offset)
287 {
288 return readw(chip->cport + offset);
289 }
290
291 static inline u32
292 snd_nm256_readl(struct nm256 *chip, int offset)
293 {
294 return readl(chip->cport + offset);
295 }
296
297 static inline void
298 snd_nm256_writeb(struct nm256 *chip, int offset, u8 val)
299 {
300 writeb(val, chip->cport + offset);
301 }
302
303 static inline void
304 snd_nm256_writew(struct nm256 *chip, int offset, u16 val)
305 {
306 writew(val, chip->cport + offset);
307 }
308
309 static inline void
310 snd_nm256_writel(struct nm256 *chip, int offset, u32 val)
311 {
312 writel(val, chip->cport + offset);
313 }
314
315 static inline void
316 snd_nm256_write_buffer(struct nm256 *chip, void *src, int offset, int size)
317 {
318 offset -= chip->buffer_start;
319 #ifdef CONFIG_SND_DEBUG
320 if (offset < 0 || offset >= chip->buffer_size) {
321 dev_err(chip->card->dev,
322 "write_buffer invalid offset = %d size = %d\n",
323 offset, size);
324 return;
325 }
326 #endif
327 memcpy_toio(chip->buffer + offset, src, size);
328 }
329
330 /*
331 * coefficient handlers -- what a magic!
332 */
333
334 static u16
335 snd_nm256_get_start_offset(int which)
336 {
337 u16 offset = 0;
338 while (which-- > 0)
339 offset += coefficient_sizes[which];
340 return offset;
341 }
342
343 static void
344 snd_nm256_load_one_coefficient(struct nm256 *chip, int stream, u32 port, int which)
345 {
346 u32 coeff_buf = chip->coeff_buf[stream];
347 u16 offset = snd_nm256_get_start_offset(which);
348 u16 size = coefficient_sizes[which];
349
350 snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size);
351 snd_nm256_writel(chip, port, coeff_buf);
352 /* ??? Record seems to behave differently than playback. */
353 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
354 size--;
355 snd_nm256_writel(chip, port + 4, coeff_buf + size);
356 }
357
358 static void
359 snd_nm256_load_coefficient(struct nm256 *chip, int stream, int number)
360 {
361 /* The enable register for the specified engine. */
362 u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ?
363 NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG);
364 u32 addr = NM_COEFF_START_OFFSET;
365
366 addr += (stream == SNDRV_PCM_STREAM_CAPTURE ?
367 NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET);
368
369 if (snd_nm256_readb(chip, poffset) & 1) {
370 dev_dbg(chip->card->dev,
371 "NM256: Engine was enabled while loading coefficients!\n");
372 return;
373 }
374
375 /* The recording engine uses coefficient values 8-15. */
376 number &= 7;
377 if (stream == SNDRV_PCM_STREAM_CAPTURE)
378 number += 8;
379
380 if (! chip->use_cache) {
381 snd_nm256_load_one_coefficient(chip, stream, addr, number);
382 return;
383 }
384 if (! chip->coeffs_current) {
385 snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf,
386 NM_TOTAL_COEFF_COUNT * 4);
387 chip->coeffs_current = 1;
388 } else {
389 u32 base = chip->all_coeff_buf;
390 u32 offset = snd_nm256_get_start_offset(number);
391 u32 end_offset = offset + coefficient_sizes[number];
392 snd_nm256_writel(chip, addr, base + offset);
393 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
394 end_offset--;
395 snd_nm256_writel(chip, addr + 4, base + end_offset);
396 }
397 }
398
399
400 /* The actual rates supported by the card. */
401 static const unsigned int samplerates[8] = {
402 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000,
403 };
404 static const struct snd_pcm_hw_constraint_list constraints_rates = {
405 .count = ARRAY_SIZE(samplerates),
406 .list = samplerates,
407 .mask = 0,
408 };
409
410 /*
411 * return the index of the target rate
412 */
413 static int
414 snd_nm256_fixed_rate(unsigned int rate)
415 {
416 unsigned int i;
417 for (i = 0; i < ARRAY_SIZE(samplerates); i++) {
418 if (rate == samplerates[i])
419 return i;
420 }
421 snd_BUG();
422 return 0;
423 }
424
425 /*
426 * set sample rate and format
427 */
428 static void
429 snd_nm256_set_format(struct nm256 *chip, struct nm256_stream *s,
430 struct snd_pcm_substream *substream)
431 {
432 struct snd_pcm_runtime *runtime = substream->runtime;
433 int rate_index = snd_nm256_fixed_rate(runtime->rate);
434 unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK;
435
436 s->shift = 0;
437 if (snd_pcm_format_width(runtime->format) == 16) {
438 ratebits |= NM_RATE_BITS_16;
439 s->shift++;
440 }
441 if (runtime->channels > 1) {
442 ratebits |= NM_RATE_STEREO;
443 s->shift++;
444 }
445
446 runtime->rate = samplerates[rate_index];
447
448 switch (substream->stream) {
449 case SNDRV_PCM_STREAM_PLAYBACK:
450 snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */
451 snd_nm256_writeb(chip,
452 NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET,
453 ratebits);
454 break;
455 case SNDRV_PCM_STREAM_CAPTURE:
456 snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */
457 snd_nm256_writeb(chip,
458 NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET,
459 ratebits);
460 break;
461 }
462 }
463
464 /* acquire interrupt */
465 static int snd_nm256_acquire_irq(struct nm256 *chip)
466 {
467 mutex_lock(&chip->irq_mutex);
468 if (chip->irq < 0) {
469 if (request_irq(chip->pci->irq, chip->interrupt, IRQF_SHARED,
470 KBUILD_MODNAME, chip)) {
471 dev_err(chip->card->dev,
472 "unable to grab IRQ %d\n", chip->pci->irq);
473 mutex_unlock(&chip->irq_mutex);
474 return -EBUSY;
475 }
476 chip->irq = chip->pci->irq;
477 }
478 chip->irq_acks++;
479 mutex_unlock(&chip->irq_mutex);
480 return 0;
481 }
482
483 /* release interrupt */
484 static void snd_nm256_release_irq(struct nm256 *chip)
485 {
486 mutex_lock(&chip->irq_mutex);
487 if (chip->irq_acks > 0)
488 chip->irq_acks--;
489 if (chip->irq_acks == 0 && chip->irq >= 0) {
490 free_irq(chip->irq, chip);
491 chip->irq = -1;
492 }
493 mutex_unlock(&chip->irq_mutex);
494 }
495
496 /*
497 * start / stop
498 */
499
500 /* update the watermark (current period) */
501 static void snd_nm256_pcm_mark(struct nm256 *chip, struct nm256_stream *s, int reg)
502 {
503 s->cur_period++;
504 s->cur_period %= s->periods;
505 snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size);
506 }
507
508 #define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK)
509 #define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK)
510
511 static void
512 snd_nm256_playback_start(struct nm256 *chip, struct nm256_stream *s,
513 struct snd_pcm_substream *substream)
514 {
515 /* program buffer pointers */
516 snd_nm256_writel(chip, NM_PBUFFER_START, s->buf);
517 snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift));
518 snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf);
519 snd_nm256_playback_mark(chip, s);
520
521 /* Enable playback engine and interrupts. */
522 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG,
523 NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN);
524 /* Enable both channels. */
525 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0);
526 }
527
528 static void
529 snd_nm256_capture_start(struct nm256 *chip, struct nm256_stream *s,
530 struct snd_pcm_substream *substream)
531 {
532 /* program buffer pointers */
533 snd_nm256_writel(chip, NM_RBUFFER_START, s->buf);
534 snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size);
535 snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf);
536 snd_nm256_capture_mark(chip, s);
537
538 /* Enable playback engine and interrupts. */
539 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG,
540 NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN);
541 }
542
543 /* Stop the play engine. */
544 static void
545 snd_nm256_playback_stop(struct nm256 *chip)
546 {
547 /* Shut off sound from both channels. */
548 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG,
549 NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT);
550 /* Disable play engine. */
551 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0);
552 }
553
554 static void
555 snd_nm256_capture_stop(struct nm256 *chip)
556 {
557 /* Disable recording engine. */
558 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0);
559 }
560
561 static int
562 snd_nm256_playback_trigger(struct snd_pcm_substream *substream, int cmd)
563 {
564 struct nm256 *chip = snd_pcm_substream_chip(substream);
565 struct nm256_stream *s = substream->runtime->private_data;
566 int err = 0;
567
568 if (snd_BUG_ON(!s))
569 return -ENXIO;
570
571 spin_lock(&chip->reg_lock);
572 switch (cmd) {
573 case SNDRV_PCM_TRIGGER_RESUME:
574 s->suspended = 0;
575 /* fallthru */
576 case SNDRV_PCM_TRIGGER_START:
577 if (! s->running) {
578 snd_nm256_playback_start(chip, s, substream);
579 s->running = 1;
580 }
581 break;
582 case SNDRV_PCM_TRIGGER_SUSPEND:
583 s->suspended = 1;
584 /* fallthru */
585 case SNDRV_PCM_TRIGGER_STOP:
586 if (s->running) {
587 snd_nm256_playback_stop(chip);
588 s->running = 0;
589 }
590 break;
591 default:
592 err = -EINVAL;
593 break;
594 }
595 spin_unlock(&chip->reg_lock);
596 return err;
597 }
598
599 static int
600 snd_nm256_capture_trigger(struct snd_pcm_substream *substream, int cmd)
601 {
602 struct nm256 *chip = snd_pcm_substream_chip(substream);
603 struct nm256_stream *s = substream->runtime->private_data;
604 int err = 0;
605
606 if (snd_BUG_ON(!s))
607 return -ENXIO;
608
609 spin_lock(&chip->reg_lock);
610 switch (cmd) {
611 case SNDRV_PCM_TRIGGER_START:
612 case SNDRV_PCM_TRIGGER_RESUME:
613 if (! s->running) {
614 snd_nm256_capture_start(chip, s, substream);
615 s->running = 1;
616 }
617 break;
618 case SNDRV_PCM_TRIGGER_STOP:
619 case SNDRV_PCM_TRIGGER_SUSPEND:
620 if (s->running) {
621 snd_nm256_capture_stop(chip);
622 s->running = 0;
623 }
624 break;
625 default:
626 err = -EINVAL;
627 break;
628 }
629 spin_unlock(&chip->reg_lock);
630 return err;
631 }
632
633
634 /*
635 * prepare playback/capture channel
636 */
637 static int snd_nm256_pcm_prepare(struct snd_pcm_substream *substream)
638 {
639 struct nm256 *chip = snd_pcm_substream_chip(substream);
640 struct snd_pcm_runtime *runtime = substream->runtime;
641 struct nm256_stream *s = runtime->private_data;
642
643 if (snd_BUG_ON(!s))
644 return -ENXIO;
645 s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size);
646 s->period_size = frames_to_bytes(runtime, substream->runtime->period_size);
647 s->periods = substream->runtime->periods;
648 s->cur_period = 0;
649
650 spin_lock_irq(&chip->reg_lock);
651 s->running = 0;
652 snd_nm256_set_format(chip, s, substream);
653 spin_unlock_irq(&chip->reg_lock);
654
655 return 0;
656 }
657
658
659 /*
660 * get the current pointer
661 */
662 static snd_pcm_uframes_t
663 snd_nm256_playback_pointer(struct snd_pcm_substream *substream)
664 {
665 struct nm256 *chip = snd_pcm_substream_chip(substream);
666 struct nm256_stream *s = substream->runtime->private_data;
667 unsigned long curp;
668
669 if (snd_BUG_ON(!s))
670 return 0;
671 curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf;
672 curp %= s->dma_size;
673 return bytes_to_frames(substream->runtime, curp);
674 }
675
676 static snd_pcm_uframes_t
677 snd_nm256_capture_pointer(struct snd_pcm_substream *substream)
678 {
679 struct nm256 *chip = snd_pcm_substream_chip(substream);
680 struct nm256_stream *s = substream->runtime->private_data;
681 unsigned long curp;
682
683 if (snd_BUG_ON(!s))
684 return 0;
685 curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf;
686 curp %= s->dma_size;
687 return bytes_to_frames(substream->runtime, curp);
688 }
689
690 /* Remapped I/O space can be accessible as pointer on i386 */
691 /* This might be changed in the future */
692 #ifndef __i386__
693 /*
694 * silence / copy for playback
695 */
696 static int
697 snd_nm256_playback_silence(struct snd_pcm_substream *substream,
698 int channel, unsigned long pos, unsigned long count)
699 {
700 struct snd_pcm_runtime *runtime = substream->runtime;
701 struct nm256_stream *s = runtime->private_data;
702
703 memset_io(s->bufptr + pos, 0, count);
704 return 0;
705 }
706
707 static int
708 snd_nm256_playback_copy(struct snd_pcm_substream *substream,
709 int channel, unsigned long pos,
710 void __user *src, unsigned long count)
711 {
712 struct snd_pcm_runtime *runtime = substream->runtime;
713 struct nm256_stream *s = runtime->private_data;
714
715 if (copy_from_user_toio(s->bufptr + pos, src, count))
716 return -EFAULT;
717 return 0;
718 }
719
720 static int
721 snd_nm256_playback_copy_kernel(struct snd_pcm_substream *substream,
722 int channel, unsigned long pos,
723 void *src, unsigned long count)
724 {
725 struct snd_pcm_runtime *runtime = substream->runtime;
726 struct nm256_stream *s = runtime->private_data;
727
728 memcpy_toio(s->bufptr + pos, src, count);
729 return 0;
730 }
731
732 /*
733 * copy to user
734 */
735 static int
736 snd_nm256_capture_copy(struct snd_pcm_substream *substream,
737 int channel, unsigned long pos,
738 void __user *dst, unsigned long count)
739 {
740 struct snd_pcm_runtime *runtime = substream->runtime;
741 struct nm256_stream *s = runtime->private_data;
742
743 if (copy_to_user_fromio(dst, s->bufptr + pos, count))
744 return -EFAULT;
745 return 0;
746 }
747
748 static int
749 snd_nm256_capture_copy_kernel(struct snd_pcm_substream *substream,
750 int channel, unsigned long pos,
751 void *dst, unsigned long count)
752 {
753 struct snd_pcm_runtime *runtime = substream->runtime;
754 struct nm256_stream *s = runtime->private_data;
755
756 memcpy_fromio(dst, s->bufptr + pos, count);
757 return 0;
758 }
759
760 #endif /* !__i386__ */
761
762
763 /*
764 * update playback/capture watermarks
765 */
766
767 /* spinlock held! */
768 static void
769 snd_nm256_playback_update(struct nm256 *chip)
770 {
771 struct nm256_stream *s;
772
773 s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK];
774 if (s->running && s->substream) {
775 spin_unlock(&chip->reg_lock);
776 snd_pcm_period_elapsed(s->substream);
777 spin_lock(&chip->reg_lock);
778 snd_nm256_playback_mark(chip, s);
779 }
780 }
781
782 /* spinlock held! */
783 static void
784 snd_nm256_capture_update(struct nm256 *chip)
785 {
786 struct nm256_stream *s;
787
788 s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE];
789 if (s->running && s->substream) {
790 spin_unlock(&chip->reg_lock);
791 snd_pcm_period_elapsed(s->substream);
792 spin_lock(&chip->reg_lock);
793 snd_nm256_capture_mark(chip, s);
794 }
795 }
796
797 /*
798 * hardware info
799 */
800 static struct snd_pcm_hardware snd_nm256_playback =
801 {
802 .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID |
803 SNDRV_PCM_INFO_INTERLEAVED |
804 /*SNDRV_PCM_INFO_PAUSE |*/
805 SNDRV_PCM_INFO_RESUME,
806 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
807 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
808 .rate_min = 8000,
809 .rate_max = 48000,
810 .channels_min = 1,
811 .channels_max = 2,
812 .periods_min = 2,
813 .periods_max = 1024,
814 .buffer_bytes_max = 128 * 1024,
815 .period_bytes_min = 256,
816 .period_bytes_max = 128 * 1024,
817 };
818
819 static struct snd_pcm_hardware snd_nm256_capture =
820 {
821 .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID |
822 SNDRV_PCM_INFO_INTERLEAVED |
823 /*SNDRV_PCM_INFO_PAUSE |*/
824 SNDRV_PCM_INFO_RESUME,
825 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
826 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000,
827 .rate_min = 8000,
828 .rate_max = 48000,
829 .channels_min = 1,
830 .channels_max = 2,
831 .periods_min = 2,
832 .periods_max = 1024,
833 .buffer_bytes_max = 128 * 1024,
834 .period_bytes_min = 256,
835 .period_bytes_max = 128 * 1024,
836 };
837
838
839 /* set dma transfer size */
840 static int snd_nm256_pcm_hw_params(struct snd_pcm_substream *substream,
841 struct snd_pcm_hw_params *hw_params)
842 {
843 /* area and addr are already set and unchanged */
844 substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
845 return 0;
846 }
847
848 /*
849 * open
850 */
851 static void snd_nm256_setup_stream(struct nm256 *chip, struct nm256_stream *s,
852 struct snd_pcm_substream *substream,
853 struct snd_pcm_hardware *hw_ptr)
854 {
855 struct snd_pcm_runtime *runtime = substream->runtime;
856
857 s->running = 0;
858 runtime->hw = *hw_ptr;
859 runtime->hw.buffer_bytes_max = s->bufsize;
860 runtime->hw.period_bytes_max = s->bufsize / 2;
861 runtime->dma_area = (void __force *) s->bufptr;
862 runtime->dma_addr = s->bufptr_addr;
863 runtime->dma_bytes = s->bufsize;
864 runtime->private_data = s;
865 s->substream = substream;
866
867 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
868 &constraints_rates);
869 }
870
871 static int
872 snd_nm256_playback_open(struct snd_pcm_substream *substream)
873 {
874 struct nm256 *chip = snd_pcm_substream_chip(substream);
875
876 if (snd_nm256_acquire_irq(chip) < 0)
877 return -EBUSY;
878 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK],
879 substream, &snd_nm256_playback);
880 return 0;
881 }
882
883 static int
884 snd_nm256_capture_open(struct snd_pcm_substream *substream)
885 {
886 struct nm256 *chip = snd_pcm_substream_chip(substream);
887
888 if (snd_nm256_acquire_irq(chip) < 0)
889 return -EBUSY;
890 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE],
891 substream, &snd_nm256_capture);
892 return 0;
893 }
894
895 /*
896 * close - we don't have to do special..
897 */
898 static int
899 snd_nm256_playback_close(struct snd_pcm_substream *substream)
900 {
901 struct nm256 *chip = snd_pcm_substream_chip(substream);
902
903 snd_nm256_release_irq(chip);
904 return 0;
905 }
906
907
908 static int
909 snd_nm256_capture_close(struct snd_pcm_substream *substream)
910 {
911 struct nm256 *chip = snd_pcm_substream_chip(substream);
912
913 snd_nm256_release_irq(chip);
914 return 0;
915 }
916
917 /*
918 * create a pcm instance
919 */
920 static const struct snd_pcm_ops snd_nm256_playback_ops = {
921 .open = snd_nm256_playback_open,
922 .close = snd_nm256_playback_close,
923 .ioctl = snd_pcm_lib_ioctl,
924 .hw_params = snd_nm256_pcm_hw_params,
925 .prepare = snd_nm256_pcm_prepare,
926 .trigger = snd_nm256_playback_trigger,
927 .pointer = snd_nm256_playback_pointer,
928 #ifndef __i386__
929 .copy_user = snd_nm256_playback_copy,
930 .copy_kernel = snd_nm256_playback_copy_kernel,
931 .fill_silence = snd_nm256_playback_silence,
932 #endif
933 .mmap = snd_pcm_lib_mmap_iomem,
934 };
935
936 static const struct snd_pcm_ops snd_nm256_capture_ops = {
937 .open = snd_nm256_capture_open,
938 .close = snd_nm256_capture_close,
939 .ioctl = snd_pcm_lib_ioctl,
940 .hw_params = snd_nm256_pcm_hw_params,
941 .prepare = snd_nm256_pcm_prepare,
942 .trigger = snd_nm256_capture_trigger,
943 .pointer = snd_nm256_capture_pointer,
944 #ifndef __i386__
945 .copy_user = snd_nm256_capture_copy,
946 .copy_kernel = snd_nm256_capture_copy_kernel,
947 #endif
948 .mmap = snd_pcm_lib_mmap_iomem,
949 };
950
951 static int
952 snd_nm256_pcm(struct nm256 *chip, int device)
953 {
954 struct snd_pcm *pcm;
955 int i, err;
956
957 for (i = 0; i < 2; i++) {
958 struct nm256_stream *s = &chip->streams[i];
959 s->bufptr = chip->buffer + (s->buf - chip->buffer_start);
960 s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start);
961 }
962
963 err = snd_pcm_new(chip->card, chip->card->driver, device,
964 1, 1, &pcm);
965 if (err < 0)
966 return err;
967
968 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops);
969 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops);
970
971 pcm->private_data = chip;
972 pcm->info_flags = 0;
973 chip->pcm = pcm;
974
975 return 0;
976 }
977
978
979 /*
980 * Initialize the hardware.
981 */
982 static void
983 snd_nm256_init_chip(struct nm256 *chip)
984 {
985 /* Reset everything. */
986 snd_nm256_writeb(chip, 0x0, 0x11);
987 snd_nm256_writew(chip, 0x214, 0);
988 /* stop sounds.. */
989 //snd_nm256_playback_stop(chip);
990 //snd_nm256_capture_stop(chip);
991 }
992
993
994 static irqreturn_t
995 snd_nm256_intr_check(struct nm256 *chip)
996 {
997 if (chip->badintrcount++ > 1000) {
998 /*
999 * I'm not sure if the best thing is to stop the card from
1000 * playing or just release the interrupt (after all, we're in
1001 * a bad situation, so doing fancy stuff may not be such a good
1002 * idea).
1003 *
1004 * I worry about the card engine continuing to play noise
1005 * over and over, however--that could become a very
1006 * obnoxious problem. And we know that when this usually
1007 * happens things are fairly safe, it just means the user's
1008 * inserted a PCMCIA card and someone's spamming us with IRQ 9s.
1009 */
1010 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
1011 snd_nm256_playback_stop(chip);
1012 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
1013 snd_nm256_capture_stop(chip);
1014 chip->badintrcount = 0;
1015 return IRQ_HANDLED;
1016 }
1017 return IRQ_NONE;
1018 }
1019
1020 /*
1021 * Handle a potential interrupt for the device referred to by DEV_ID.
1022 *
1023 * I don't like the cut-n-paste job here either between the two routines,
1024 * but there are sufficient differences between the two interrupt handlers
1025 * that parameterizing it isn't all that great either. (Could use a macro,
1026 * I suppose...yucky bleah.)
1027 */
1028
1029 static irqreturn_t
1030 snd_nm256_interrupt(int irq, void *dev_id)
1031 {
1032 struct nm256 *chip = dev_id;
1033 u16 status;
1034 u8 cbyte;
1035
1036 status = snd_nm256_readw(chip, NM_INT_REG);
1037
1038 /* Not ours. */
1039 if (status == 0)
1040 return snd_nm256_intr_check(chip);
1041
1042 chip->badintrcount = 0;
1043
1044 /* Rather boring; check for individual interrupts and process them. */
1045
1046 spin_lock(&chip->reg_lock);
1047 if (status & NM_PLAYBACK_INT) {
1048 status &= ~NM_PLAYBACK_INT;
1049 NM_ACK_INT(chip, NM_PLAYBACK_INT);
1050 snd_nm256_playback_update(chip);
1051 }
1052
1053 if (status & NM_RECORD_INT) {
1054 status &= ~NM_RECORD_INT;
1055 NM_ACK_INT(chip, NM_RECORD_INT);
1056 snd_nm256_capture_update(chip);
1057 }
1058
1059 if (status & NM_MISC_INT_1) {
1060 status &= ~NM_MISC_INT_1;
1061 NM_ACK_INT(chip, NM_MISC_INT_1);
1062 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #1\n");
1063 snd_nm256_writew(chip, NM_INT_REG, 0x8000);
1064 cbyte = snd_nm256_readb(chip, 0x400);
1065 snd_nm256_writeb(chip, 0x400, cbyte | 2);
1066 }
1067
1068 if (status & NM_MISC_INT_2) {
1069 status &= ~NM_MISC_INT_2;
1070 NM_ACK_INT(chip, NM_MISC_INT_2);
1071 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #2\n");
1072 cbyte = snd_nm256_readb(chip, 0x400);
1073 snd_nm256_writeb(chip, 0x400, cbyte & ~2);
1074 }
1075
1076 /* Unknown interrupt. */
1077 if (status) {
1078 dev_dbg(chip->card->dev,
1079 "NM256: Fire in the hole! Unknown status 0x%x\n",
1080 status);
1081 /* Pray. */
1082 NM_ACK_INT(chip, status);
1083 }
1084
1085 spin_unlock(&chip->reg_lock);
1086 return IRQ_HANDLED;
1087 }
1088
1089 /*
1090 * Handle a potential interrupt for the device referred to by DEV_ID.
1091 * This handler is for the 256ZX, and is very similar to the non-ZX
1092 * routine.
1093 */
1094
1095 static irqreturn_t
1096 snd_nm256_interrupt_zx(int irq, void *dev_id)
1097 {
1098 struct nm256 *chip = dev_id;
1099 u32 status;
1100 u8 cbyte;
1101
1102 status = snd_nm256_readl(chip, NM_INT_REG);
1103
1104 /* Not ours. */
1105 if (status == 0)
1106 return snd_nm256_intr_check(chip);
1107
1108 chip->badintrcount = 0;
1109
1110 /* Rather boring; check for individual interrupts and process them. */
1111
1112 spin_lock(&chip->reg_lock);
1113 if (status & NM2_PLAYBACK_INT) {
1114 status &= ~NM2_PLAYBACK_INT;
1115 NM2_ACK_INT(chip, NM2_PLAYBACK_INT);
1116 snd_nm256_playback_update(chip);
1117 }
1118
1119 if (status & NM2_RECORD_INT) {
1120 status &= ~NM2_RECORD_INT;
1121 NM2_ACK_INT(chip, NM2_RECORD_INT);
1122 snd_nm256_capture_update(chip);
1123 }
1124
1125 if (status & NM2_MISC_INT_1) {
1126 status &= ~NM2_MISC_INT_1;
1127 NM2_ACK_INT(chip, NM2_MISC_INT_1);
1128 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #1\n");
1129 cbyte = snd_nm256_readb(chip, 0x400);
1130 snd_nm256_writeb(chip, 0x400, cbyte | 2);
1131 }
1132
1133 if (status & NM2_MISC_INT_2) {
1134 status &= ~NM2_MISC_INT_2;
1135 NM2_ACK_INT(chip, NM2_MISC_INT_2);
1136 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #2\n");
1137 cbyte = snd_nm256_readb(chip, 0x400);
1138 snd_nm256_writeb(chip, 0x400, cbyte & ~2);
1139 }
1140
1141 /* Unknown interrupt. */
1142 if (status) {
1143 dev_dbg(chip->card->dev,
1144 "NM256: Fire in the hole! Unknown status 0x%x\n",
1145 status);
1146 /* Pray. */
1147 NM2_ACK_INT(chip, status);
1148 }
1149
1150 spin_unlock(&chip->reg_lock);
1151 return IRQ_HANDLED;
1152 }
1153
1154 /*
1155 * AC97 interface
1156 */
1157
1158 /*
1159 * Waits for the mixer to become ready to be written; returns a zero value
1160 * if it timed out.
1161 */
1162 static int
1163 snd_nm256_ac97_ready(struct nm256 *chip)
1164 {
1165 int timeout = 10;
1166 u32 testaddr;
1167 u16 testb;
1168
1169 testaddr = chip->mixer_status_offset;
1170 testb = chip->mixer_status_mask;
1171
1172 /*
1173 * Loop around waiting for the mixer to become ready.
1174 */
1175 while (timeout-- > 0) {
1176 if ((snd_nm256_readw(chip, testaddr) & testb) == 0)
1177 return 1;
1178 udelay(100);
1179 }
1180 return 0;
1181 }
1182
1183 /*
1184 * Initial register values to be written to the AC97 mixer.
1185 * While most of these are identical to the reset values, we do this
1186 * so that we have most of the register contents cached--this avoids
1187 * reading from the mixer directly (which seems to be problematic,
1188 * probably due to ignorance).
1189 */
1190
1191 struct initialValues {
1192 unsigned short reg;
1193 unsigned short value;
1194 };
1195
1196 static struct initialValues nm256_ac97_init_val[] =
1197 {
1198 { AC97_MASTER, 0x8000 },
1199 { AC97_HEADPHONE, 0x8000 },
1200 { AC97_MASTER_MONO, 0x8000 },
1201 { AC97_PC_BEEP, 0x8000 },
1202 { AC97_PHONE, 0x8008 },
1203 { AC97_MIC, 0x8000 },
1204 { AC97_LINE, 0x8808 },
1205 { AC97_CD, 0x8808 },
1206 { AC97_VIDEO, 0x8808 },
1207 { AC97_AUX, 0x8808 },
1208 { AC97_PCM, 0x8808 },
1209 { AC97_REC_SEL, 0x0000 },
1210 { AC97_REC_GAIN, 0x0B0B },
1211 { AC97_GENERAL_PURPOSE, 0x0000 },
1212 { AC97_3D_CONTROL, 0x8000 },
1213 { AC97_VENDOR_ID1, 0x8384 },
1214 { AC97_VENDOR_ID2, 0x7609 },
1215 };
1216
1217 static int nm256_ac97_idx(unsigned short reg)
1218 {
1219 int i;
1220 for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++)
1221 if (nm256_ac97_init_val[i].reg == reg)
1222 return i;
1223 return -1;
1224 }
1225
1226 /*
1227 * some nm256 easily crash when reading from mixer registers
1228 * thus we're treating it as a write-only mixer and cache the
1229 * written values
1230 */
1231 static unsigned short
1232 snd_nm256_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
1233 {
1234 struct nm256 *chip = ac97->private_data;
1235 int idx = nm256_ac97_idx(reg);
1236
1237 if (idx < 0)
1238 return 0;
1239 return chip->ac97_regs[idx];
1240 }
1241
1242 /*
1243 */
1244 static void
1245 snd_nm256_ac97_write(struct snd_ac97 *ac97,
1246 unsigned short reg, unsigned short val)
1247 {
1248 struct nm256 *chip = ac97->private_data;
1249 int tries = 2;
1250 int idx = nm256_ac97_idx(reg);
1251 u32 base;
1252
1253 if (idx < 0)
1254 return;
1255
1256 base = chip->mixer_base;
1257
1258 snd_nm256_ac97_ready(chip);
1259
1260 /* Wait for the write to take, too. */
1261 while (tries-- > 0) {
1262 snd_nm256_writew(chip, base + reg, val);
1263 msleep(1); /* a little delay here seems better.. */
1264 if (snd_nm256_ac97_ready(chip)) {
1265 /* successful write: set cache */
1266 chip->ac97_regs[idx] = val;
1267 return;
1268 }
1269 }
1270 dev_dbg(chip->card->dev, "nm256: ac97 codec not ready..\n");
1271 }
1272
1273 /* static resolution table */
1274 static const struct snd_ac97_res_table nm256_res_table[] = {
1275 { AC97_MASTER, 0x1f1f },
1276 { AC97_HEADPHONE, 0x1f1f },
1277 { AC97_MASTER_MONO, 0x001f },
1278 { AC97_PC_BEEP, 0x001f },
1279 { AC97_PHONE, 0x001f },
1280 { AC97_MIC, 0x001f },
1281 { AC97_LINE, 0x1f1f },
1282 { AC97_CD, 0x1f1f },
1283 { AC97_VIDEO, 0x1f1f },
1284 { AC97_AUX, 0x1f1f },
1285 { AC97_PCM, 0x1f1f },
1286 { AC97_REC_GAIN, 0x0f0f },
1287 { } /* terminator */
1288 };
1289
1290 /* initialize the ac97 into a known state */
1291 static void
1292 snd_nm256_ac97_reset(struct snd_ac97 *ac97)
1293 {
1294 struct nm256 *chip = ac97->private_data;
1295
1296 /* Reset the mixer. 'Tis magic! */
1297 snd_nm256_writeb(chip, 0x6c0, 1);
1298 if (! chip->reset_workaround) {
1299 /* Dell latitude LS will lock up by this */
1300 snd_nm256_writeb(chip, 0x6cc, 0x87);
1301 }
1302 if (! chip->reset_workaround_2) {
1303 /* Dell latitude CSx will lock up by this */
1304 snd_nm256_writeb(chip, 0x6cc, 0x80);
1305 snd_nm256_writeb(chip, 0x6cc, 0x0);
1306 }
1307 if (! chip->in_resume) {
1308 int i;
1309 for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++) {
1310 /* preload the cache, so as to avoid even a single
1311 * read of the mixer regs
1312 */
1313 snd_nm256_ac97_write(ac97, nm256_ac97_init_val[i].reg,
1314 nm256_ac97_init_val[i].value);
1315 }
1316 }
1317 }
1318
1319 /* create an ac97 mixer interface */
1320 static int
1321 snd_nm256_mixer(struct nm256 *chip)
1322 {
1323 struct snd_ac97_bus *pbus;
1324 struct snd_ac97_template ac97;
1325 int err;
1326 static struct snd_ac97_bus_ops ops = {
1327 .reset = snd_nm256_ac97_reset,
1328 .write = snd_nm256_ac97_write,
1329 .read = snd_nm256_ac97_read,
1330 };
1331
1332 chip->ac97_regs = kcalloc(ARRAY_SIZE(nm256_ac97_init_val),
1333 sizeof(short), GFP_KERNEL);
1334 if (! chip->ac97_regs)
1335 return -ENOMEM;
1336
1337 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
1338 return err;
1339
1340 memset(&ac97, 0, sizeof(ac97));
1341 ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */
1342 ac97.private_data = chip;
1343 ac97.res_table = nm256_res_table;
1344 pbus->no_vra = 1;
1345 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97);
1346 if (err < 0)
1347 return err;
1348 if (! (chip->ac97->id & (0xf0000000))) {
1349 /* looks like an invalid id */
1350 sprintf(chip->card->mixername, "%s AC97", chip->card->driver);
1351 }
1352 return 0;
1353 }
1354
1355 /*
1356 * See if the signature left by the NM256 BIOS is intact; if so, we use
1357 * the associated address as the end of our audio buffer in the video
1358 * RAM.
1359 */
1360
1361 static int
1362 snd_nm256_peek_for_sig(struct nm256 *chip)
1363 {
1364 /* The signature is located 1K below the end of video RAM. */
1365 void __iomem *temp;
1366 /* Default buffer end is 5120 bytes below the top of RAM. */
1367 unsigned long pointer_found = chip->buffer_end - 0x1400;
1368 u32 sig;
1369
1370 temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16);
1371 if (temp == NULL) {
1372 dev_err(chip->card->dev,
1373 "Unable to scan for card signature in video RAM\n");
1374 return -EBUSY;
1375 }
1376
1377 sig = readl(temp);
1378 if ((sig & NM_SIG_MASK) == NM_SIGNATURE) {
1379 u32 pointer = readl(temp + 4);
1380
1381 /*
1382 * If it's obviously invalid, don't use it
1383 */
1384 if (pointer == 0xffffffff ||
1385 pointer < chip->buffer_size ||
1386 pointer > chip->buffer_end) {
1387 dev_err(chip->card->dev,
1388 "invalid signature found: 0x%x\n", pointer);
1389 iounmap(temp);
1390 return -ENODEV;
1391 } else {
1392 pointer_found = pointer;
1393 dev_info(chip->card->dev,
1394 "found card signature in video RAM: 0x%x\n",
1395 pointer);
1396 }
1397 }
1398
1399 iounmap(temp);
1400 chip->buffer_end = pointer_found;
1401
1402 return 0;
1403 }
1404
1405 #ifdef CONFIG_PM_SLEEP
1406 /*
1407 * APM event handler, so the card is properly reinitialized after a power
1408 * event.
1409 */
1410 static int nm256_suspend(struct device *dev)
1411 {
1412 struct snd_card *card = dev_get_drvdata(dev);
1413 struct nm256 *chip = card->private_data;
1414
1415 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1416 snd_pcm_suspend_all(chip->pcm);
1417 snd_ac97_suspend(chip->ac97);
1418 chip->coeffs_current = 0;
1419 return 0;
1420 }
1421
1422 static int nm256_resume(struct device *dev)
1423 {
1424 struct snd_card *card = dev_get_drvdata(dev);
1425 struct nm256 *chip = card->private_data;
1426 int i;
1427
1428 /* Perform a full reset on the hardware */
1429 chip->in_resume = 1;
1430
1431 snd_nm256_init_chip(chip);
1432
1433 /* restore ac97 */
1434 snd_ac97_resume(chip->ac97);
1435
1436 for (i = 0; i < 2; i++) {
1437 struct nm256_stream *s = &chip->streams[i];
1438 if (s->substream && s->suspended) {
1439 spin_lock_irq(&chip->reg_lock);
1440 snd_nm256_set_format(chip, s, s->substream);
1441 spin_unlock_irq(&chip->reg_lock);
1442 }
1443 }
1444
1445 snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1446 chip->in_resume = 0;
1447 return 0;
1448 }
1449
1450 static SIMPLE_DEV_PM_OPS(nm256_pm, nm256_suspend, nm256_resume);
1451 #define NM256_PM_OPS &nm256_pm
1452 #else
1453 #define NM256_PM_OPS NULL
1454 #endif /* CONFIG_PM_SLEEP */
1455
1456 static int snd_nm256_free(struct nm256 *chip)
1457 {
1458 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running)
1459 snd_nm256_playback_stop(chip);
1460 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running)
1461 snd_nm256_capture_stop(chip);
1462
1463 if (chip->irq >= 0)
1464 free_irq(chip->irq, chip);
1465
1466 iounmap(chip->cport);
1467 iounmap(chip->buffer);
1468 release_and_free_resource(chip->res_cport);
1469 release_and_free_resource(chip->res_buffer);
1470
1471 pci_disable_device(chip->pci);
1472 kfree(chip->ac97_regs);
1473 kfree(chip);
1474 return 0;
1475 }
1476
1477 static int snd_nm256_dev_free(struct snd_device *device)
1478 {
1479 struct nm256 *chip = device->device_data;
1480 return snd_nm256_free(chip);
1481 }
1482
1483 static int
1484 snd_nm256_create(struct snd_card *card, struct pci_dev *pci,
1485 struct nm256 **chip_ret)
1486 {
1487 struct nm256 *chip;
1488 int err, pval;
1489 static struct snd_device_ops ops = {
1490 .dev_free = snd_nm256_dev_free,
1491 };
1492 u32 addr;
1493
1494 *chip_ret = NULL;
1495
1496 if ((err = pci_enable_device(pci)) < 0)
1497 return err;
1498
1499 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1500 if (chip == NULL) {
1501 pci_disable_device(pci);
1502 return -ENOMEM;
1503 }
1504
1505 chip->card = card;
1506 chip->pci = pci;
1507 chip->use_cache = use_cache;
1508 spin_lock_init(&chip->reg_lock);
1509 chip->irq = -1;
1510 mutex_init(&chip->irq_mutex);
1511
1512 /* store buffer sizes in bytes */
1513 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = playback_bufsize * 1024;
1514 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capture_bufsize * 1024;
1515
1516 /*
1517 * The NM256 has two memory ports. The first port is nothing
1518 * more than a chunk of video RAM, which is used as the I/O ring
1519 * buffer. The second port has the actual juicy stuff (like the
1520 * mixer and the playback engine control registers).
1521 */
1522
1523 chip->buffer_addr = pci_resource_start(pci, 0);
1524 chip->cport_addr = pci_resource_start(pci, 1);
1525
1526 /* Init the memory port info. */
1527 /* remap control port (#2) */
1528 chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE,
1529 card->driver);
1530 if (chip->res_cport == NULL) {
1531 dev_err(card->dev, "memory region 0x%lx (size 0x%x) busy\n",
1532 chip->cport_addr, NM_PORT2_SIZE);
1533 err = -EBUSY;
1534 goto __error;
1535 }
1536 chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE);
1537 if (chip->cport == NULL) {
1538 dev_err(card->dev, "unable to map control port %lx\n",
1539 chip->cport_addr);
1540 err = -ENOMEM;
1541 goto __error;
1542 }
1543
1544 if (!strcmp(card->driver, "NM256AV")) {
1545 /* Ok, try to see if this is a non-AC97 version of the hardware. */
1546 pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE);
1547 if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) {
1548 if (! force_ac97) {
1549 dev_err(card->dev,
1550 "no ac97 is found!\n");
1551 dev_err(card->dev,
1552 "force the driver to load by passing in the module parameter\n");
1553 dev_err(card->dev,
1554 " force_ac97=1\n");
1555 dev_err(card->dev,
1556 "or try sb16, opl3sa2, or cs423x drivers instead.\n");
1557 err = -ENXIO;
1558 goto __error;
1559 }
1560 }
1561 chip->buffer_end = 2560 * 1024;
1562 chip->interrupt = snd_nm256_interrupt;
1563 chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET;
1564 chip->mixer_status_mask = NM_MIXER_READY_MASK;
1565 } else {
1566 /* Not sure if there is any relevant detect for the ZX or not. */
1567 if (snd_nm256_readb(chip, 0xa0b) != 0)
1568 chip->buffer_end = 6144 * 1024;
1569 else
1570 chip->buffer_end = 4096 * 1024;
1571
1572 chip->interrupt = snd_nm256_interrupt_zx;
1573 chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET;
1574 chip->mixer_status_mask = NM2_MIXER_READY_MASK;
1575 }
1576
1577 chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize +
1578 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
1579 if (chip->use_cache)
1580 chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4;
1581 else
1582 chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE;
1583
1584 if (buffer_top >= chip->buffer_size && buffer_top < chip->buffer_end)
1585 chip->buffer_end = buffer_top;
1586 else {
1587 /* get buffer end pointer from signature */
1588 if ((err = snd_nm256_peek_for_sig(chip)) < 0)
1589 goto __error;
1590 }
1591
1592 chip->buffer_start = chip->buffer_end - chip->buffer_size;
1593 chip->buffer_addr += chip->buffer_start;
1594
1595 dev_info(card->dev, "Mapping port 1 from 0x%x - 0x%x\n",
1596 chip->buffer_start, chip->buffer_end);
1597
1598 chip->res_buffer = request_mem_region(chip->buffer_addr,
1599 chip->buffer_size,
1600 card->driver);
1601 if (chip->res_buffer == NULL) {
1602 dev_err(card->dev, "buffer 0x%lx (size 0x%x) busy\n",
1603 chip->buffer_addr, chip->buffer_size);
1604 err = -EBUSY;
1605 goto __error;
1606 }
1607 chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size);
1608 if (chip->buffer == NULL) {
1609 err = -ENOMEM;
1610 dev_err(card->dev, "unable to map ring buffer at %lx\n",
1611 chip->buffer_addr);
1612 goto __error;
1613 }
1614
1615 /* set offsets */
1616 addr = chip->buffer_start;
1617 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr;
1618 addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize;
1619 chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr;
1620 addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize;
1621 if (chip->use_cache) {
1622 chip->all_coeff_buf = addr;
1623 } else {
1624 chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr;
1625 addr += NM_MAX_PLAYBACK_COEF_SIZE;
1626 chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr;
1627 }
1628
1629 /* Fixed setting. */
1630 chip->mixer_base = NM_MIXER_OFFSET;
1631
1632 chip->coeffs_current = 0;
1633
1634 snd_nm256_init_chip(chip);
1635
1636 // pci_set_master(pci); /* needed? */
1637
1638 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0)
1639 goto __error;
1640
1641 *chip_ret = chip;
1642 return 0;
1643
1644 __error:
1645 snd_nm256_free(chip);
1646 return err;
1647 }
1648
1649
1650 enum { NM_BLACKLISTED, NM_RESET_WORKAROUND, NM_RESET_WORKAROUND_2 };
1651
1652 static struct snd_pci_quirk nm256_quirks[] = {
1653 /* HP omnibook 4150 has cs4232 codec internally */
1654 SND_PCI_QUIRK(0x103c, 0x0007, "HP omnibook 4150", NM_BLACKLISTED),
1655 /* Reset workarounds to avoid lock-ups */
1656 SND_PCI_QUIRK(0x104d, 0x8041, "Sony PCG-F305", NM_RESET_WORKAROUND),
1657 SND_PCI_QUIRK(0x1028, 0x0080, "Dell Latitude LS", NM_RESET_WORKAROUND),
1658 SND_PCI_QUIRK(0x1028, 0x0091, "Dell Latitude CSx", NM_RESET_WORKAROUND_2),
1659 { } /* terminator */
1660 };
1661
1662
1663 static int snd_nm256_probe(struct pci_dev *pci,
1664 const struct pci_device_id *pci_id)
1665 {
1666 struct snd_card *card;
1667 struct nm256 *chip;
1668 int err;
1669 const struct snd_pci_quirk *q;
1670
1671 q = snd_pci_quirk_lookup(pci, nm256_quirks);
1672 if (q) {
1673 dev_dbg(&pci->dev, "Enabled quirk for %s.\n",
1674 snd_pci_quirk_name(q));
1675 switch (q->value) {
1676 case NM_BLACKLISTED:
1677 dev_info(&pci->dev,
1678 "The device is blacklisted. Loading stopped\n");
1679 return -ENODEV;
1680 case NM_RESET_WORKAROUND_2:
1681 reset_workaround_2 = 1;
1682 /* Fall-through */
1683 case NM_RESET_WORKAROUND:
1684 reset_workaround = 1;
1685 break;
1686 }
1687 }
1688
1689 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1690 if (err < 0)
1691 return err;
1692
1693 switch (pci->device) {
1694 case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO:
1695 strcpy(card->driver, "NM256AV");
1696 break;
1697 case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO:
1698 strcpy(card->driver, "NM256ZX");
1699 break;
1700 case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO:
1701 strcpy(card->driver, "NM256XL+");
1702 break;
1703 default:
1704 dev_err(&pci->dev, "invalid device id 0x%x\n", pci->device);
1705 snd_card_free(card);
1706 return -EINVAL;
1707 }
1708
1709 if (vaio_hack)
1710 buffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */
1711
1712 if (playback_bufsize < 4)
1713 playback_bufsize = 4;
1714 if (playback_bufsize > 128)
1715 playback_bufsize = 128;
1716 if (capture_bufsize < 4)
1717 capture_bufsize = 4;
1718 if (capture_bufsize > 128)
1719 capture_bufsize = 128;
1720 if ((err = snd_nm256_create(card, pci, &chip)) < 0) {
1721 snd_card_free(card);
1722 return err;
1723 }
1724 card->private_data = chip;
1725
1726 if (reset_workaround) {
1727 dev_dbg(&pci->dev, "reset_workaround activated\n");
1728 chip->reset_workaround = 1;
1729 }
1730
1731 if (reset_workaround_2) {
1732 dev_dbg(&pci->dev, "reset_workaround_2 activated\n");
1733 chip->reset_workaround_2 = 1;
1734 }
1735
1736 if ((err = snd_nm256_pcm(chip, 0)) < 0 ||
1737 (err = snd_nm256_mixer(chip)) < 0) {
1738 snd_card_free(card);
1739 return err;
1740 }
1741
1742 sprintf(card->shortname, "NeoMagic %s", card->driver);
1743 sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d",
1744 card->shortname,
1745 chip->buffer_addr, chip->cport_addr, chip->irq);
1746
1747 if ((err = snd_card_register(card)) < 0) {
1748 snd_card_free(card);
1749 return err;
1750 }
1751
1752 pci_set_drvdata(pci, card);
1753 return 0;
1754 }
1755
1756 static void snd_nm256_remove(struct pci_dev *pci)
1757 {
1758 snd_card_free(pci_get_drvdata(pci));
1759 }
1760
1761
1762 static struct pci_driver nm256_driver = {
1763 .name = KBUILD_MODNAME,
1764 .id_table = snd_nm256_ids,
1765 .probe = snd_nm256_probe,
1766 .remove = snd_nm256_remove,
1767 .driver = {
1768 .pm = NM256_PM_OPS,
1769 },
1770 };
1771
1772 module_pci_driver(nm256_driver);
Linux with added FPC-III support