xref: /linux/sound/pci/ali5451/ali5451.c (revision 37744feebc086908fd89760650f458ab19071750)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Matt Wu <Matt_Wu@acersoftech.com.cn>
4  *  Apr 26, 2001
5  *  Routines for control of ALi pci audio M5451
6  *
7  *  BUGS:
8  *    --
9  *
10  *  TODO:
11  *    --
12  */
13 
14 #include <linux/io.h>
15 #include <linux/delay.h>
16 #include <linux/interrupt.h>
17 #include <linux/init.h>
18 #include <linux/pci.h>
19 #include <linux/slab.h>
20 #include <linux/module.h>
21 #include <linux/dma-mapping.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/info.h>
25 #include <sound/ac97_codec.h>
26 #include <sound/mpu401.h>
27 #include <sound/initval.h>
28 
29 MODULE_AUTHOR("Matt Wu <Matt_Wu@acersoftech.com.cn>");
30 MODULE_DESCRIPTION("ALI M5451");
31 MODULE_LICENSE("GPL");
32 MODULE_SUPPORTED_DEVICE("{{ALI,M5451,pci},{ALI,M5451}}");
33 
34 static int index = SNDRV_DEFAULT_IDX1;	/* Index */
35 static char *id = SNDRV_DEFAULT_STR1;	/* ID for this card */
36 static int pcm_channels = 32;
37 static bool spdif;
38 
39 module_param(index, int, 0444);
40 MODULE_PARM_DESC(index, "Index value for ALI M5451 PCI Audio.");
41 module_param(id, charp, 0444);
42 MODULE_PARM_DESC(id, "ID string for ALI M5451 PCI Audio.");
43 module_param(pcm_channels, int, 0444);
44 MODULE_PARM_DESC(pcm_channels, "PCM Channels");
45 module_param(spdif, bool, 0444);
46 MODULE_PARM_DESC(spdif, "Support SPDIF I/O");
47 
48 /* just for backward compatibility */
49 static bool enable;
50 module_param(enable, bool, 0444);
51 
52 
53 /*
54  *  Constants definition
55  */
56 
57 #define DEVICE_ID_ALI5451	((PCI_VENDOR_ID_AL<<16)|PCI_DEVICE_ID_AL_M5451)
58 
59 
60 #define ALI_CHANNELS		32
61 
62 #define ALI_PCM_IN_CHANNEL	31
63 #define ALI_SPDIF_IN_CHANNEL	19
64 #define ALI_SPDIF_OUT_CHANNEL	15
65 #define ALI_CENTER_CHANNEL	24
66 #define ALI_LEF_CHANNEL		23
67 #define ALI_SURR_LEFT_CHANNEL	26
68 #define ALI_SURR_RIGHT_CHANNEL	25
69 #define ALI_MODEM_IN_CHANNEL    21
70 #define ALI_MODEM_OUT_CHANNEL   20
71 
72 #define	SNDRV_ALI_VOICE_TYPE_PCM	01
73 #define SNDRV_ALI_VOICE_TYPE_OTH	02
74 
75 #define	ALI_5451_V02		0x02
76 
77 /*
78  *  Direct Registers
79  */
80 
81 #define ALI_LEGACY_DMAR0        0x00  /* ADR0 */
82 #define ALI_LEGACY_DMAR4        0x04  /* CNT0 */
83 #define ALI_LEGACY_DMAR11       0x0b  /* MOD  */
84 #define ALI_LEGACY_DMAR15       0x0f  /* MMR  */
85 #define ALI_MPUR0		0x20
86 #define ALI_MPUR1		0x21
87 #define ALI_MPUR2		0x22
88 #define ALI_MPUR3		0x23
89 
90 #define	ALI_AC97_WRITE		0x40
91 #define ALI_AC97_READ		0x44
92 
93 #define ALI_SCTRL		0x48
94 #define   ALI_SPDIF_OUT_ENABLE		0x20
95 #define   ALI_SCTRL_LINE_IN2		(1 << 9)
96 #define   ALI_SCTRL_GPIO_IN2		(1 << 13)
97 #define   ALI_SCTRL_LINE_OUT_EN 	(1 << 20)
98 #define   ALI_SCTRL_GPIO_OUT_EN 	(1 << 23)
99 #define   ALI_SCTRL_CODEC1_READY	(1 << 24)
100 #define   ALI_SCTRL_CODEC2_READY	(1 << 25)
101 #define ALI_AC97_GPIO		0x4c
102 #define   ALI_AC97_GPIO_ENABLE		0x8000
103 #define   ALI_AC97_GPIO_DATA_SHIFT	16
104 #define ALI_SPDIF_CS		0x70
105 #define ALI_SPDIF_CTRL		0x74
106 #define   ALI_SPDIF_IN_FUNC_ENABLE	0x02
107 #define   ALI_SPDIF_IN_CH_STATUS	0x40
108 #define   ALI_SPDIF_OUT_CH_STATUS	0xbf
109 #define ALI_START		0x80
110 #define ALI_STOP		0x84
111 #define ALI_CSPF		0x90
112 #define ALI_AINT		0x98
113 #define ALI_GC_CIR		0xa0
114 	#define ENDLP_IE		0x00001000
115 	#define MIDLP_IE		0x00002000
116 #define ALI_AINTEN		0xa4
117 #define ALI_VOLUME		0xa8
118 #define ALI_SBDELTA_DELTA_R     0xac
119 #define ALI_MISCINT		0xb0
120 	#define ADDRESS_IRQ		0x00000020
121 	#define TARGET_REACHED		0x00008000
122 	#define MIXER_OVERFLOW		0x00000800
123 	#define MIXER_UNDERFLOW		0x00000400
124 	#define GPIO_IRQ		0x01000000
125 #define ALI_SBBL_SBCL           0xc0
126 #define ALI_SBCTRL_SBE2R_SBDD   0xc4
127 #define ALI_STIMER		0xc8
128 #define ALI_GLOBAL_CONTROL	0xd4
129 #define   ALI_SPDIF_OUT_SEL_PCM		0x00000400 /* bit 10 */
130 #define   ALI_SPDIF_IN_SUPPORT		0x00000800 /* bit 11 */
131 #define   ALI_SPDIF_OUT_CH_ENABLE	0x00008000 /* bit 15 */
132 #define   ALI_SPDIF_IN_CH_ENABLE	0x00080000 /* bit 19 */
133 #define   ALI_PCM_IN_ENABLE		0x80000000 /* bit 31 */
134 
135 #define ALI_CSO_ALPHA_FMS	0xe0
136 #define ALI_LBA			0xe4
137 #define ALI_ESO_DELTA		0xe8
138 #define ALI_GVSEL_PAN_VOC_CTRL_EC	0xf0
139 #define ALI_EBUF1		0xf4
140 #define ALI_EBUF2		0xf8
141 
142 #define ALI_REG(codec, x) ((codec)->port + x)
143 
144 #define MAX_CODECS 2
145 
146 
147 struct snd_ali;
148 struct snd_ali_voice;
149 
150 struct snd_ali_channel_control {
151 	/* register data */
152 	struct REGDATA {
153 		unsigned int start;
154 		unsigned int stop;
155 		unsigned int aint;
156 		unsigned int ainten;
157 	} data;
158 
159 	/* register addresses */
160 	struct REGS {
161 		unsigned int start;
162 		unsigned int stop;
163 		unsigned int aint;
164 		unsigned int ainten;
165 		unsigned int ac97read;
166 		unsigned int ac97write;
167 	} regs;
168 
169 };
170 
171 struct snd_ali_voice {
172 	unsigned int number;
173 	unsigned int use :1,
174 		pcm :1,
175 		midi :1,
176 		mode :1,
177 		synth :1,
178 		running :1;
179 
180 	/* PCM data */
181 	struct snd_ali *codec;
182 	struct snd_pcm_substream *substream;
183 	struct snd_ali_voice *extra;
184 
185 	int eso;                /* final ESO value for channel */
186 	int count;              /* runtime->period_size */
187 
188 	/* --- */
189 
190 	void *private_data;
191 	void (*private_free)(void *private_data);
192 };
193 
194 
195 struct snd_alidev {
196 
197 	struct snd_ali_voice voices[ALI_CHANNELS];
198 
199 	unsigned int	chcnt;			/* num of opened channels */
200 	unsigned int	chmap;			/* bitmap for opened channels */
201 	unsigned int synthcount;
202 
203 };
204 
205 
206 #define ALI_GLOBAL_REGS		56
207 #define ALI_CHANNEL_REGS	8
208 struct snd_ali_image {
209 	u32 regs[ALI_GLOBAL_REGS];
210 	u32 channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
211 };
212 
213 
214 struct snd_ali {
215 	int		irq;
216 	unsigned long	port;
217 	unsigned char	revision;
218 
219 	unsigned int hw_initialized :1;
220 	unsigned int spdif_support :1;
221 
222 	struct pci_dev	*pci;
223 	struct pci_dev	*pci_m1533;
224 	struct pci_dev	*pci_m7101;
225 
226 	struct snd_card	*card;
227 	struct snd_pcm	*pcm[MAX_CODECS];
228 	struct snd_alidev	synth;
229 	struct snd_ali_channel_control chregs;
230 
231 	/* S/PDIF Mask */
232 	unsigned int	spdif_mask;
233 
234 	unsigned int spurious_irq_count;
235 	unsigned int spurious_irq_max_delta;
236 
237 	unsigned int num_of_codecs;
238 
239 	struct snd_ac97_bus *ac97_bus;
240 	struct snd_ac97 *ac97[MAX_CODECS];
241 	unsigned short	ac97_ext_id;
242 	unsigned short	ac97_ext_status;
243 
244 	spinlock_t	reg_lock;
245 	spinlock_t	voice_alloc;
246 
247 #ifdef CONFIG_PM_SLEEP
248 	struct snd_ali_image *image;
249 #endif
250 };
251 
252 static const struct pci_device_id snd_ali_ids[] = {
253 	{PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5451), 0, 0, 0},
254 	{0, }
255 };
256 MODULE_DEVICE_TABLE(pci, snd_ali_ids);
257 
258 static void snd_ali_clear_voices(struct snd_ali *, unsigned int, unsigned int);
259 static unsigned short snd_ali_codec_peek(struct snd_ali *, int, unsigned short);
260 static void snd_ali_codec_poke(struct snd_ali *, int, unsigned short,
261 			       unsigned short);
262 
263 /*
264  *  AC97 ACCESS
265  */
266 
267 static inline unsigned int snd_ali_5451_peek(struct snd_ali *codec,
268 					     unsigned int port)
269 {
270 	return (unsigned int)inl(ALI_REG(codec, port));
271 }
272 
273 static inline void snd_ali_5451_poke(struct snd_ali *codec,
274 				     unsigned int port,
275 				     unsigned int val)
276 {
277 	outl((unsigned int)val, ALI_REG(codec, port));
278 }
279 
280 static int snd_ali_codec_ready(struct snd_ali *codec,
281 			       unsigned int port)
282 {
283 	unsigned long end_time;
284 	unsigned int res;
285 
286 	end_time = jiffies + msecs_to_jiffies(250);
287 
288 	for (;;) {
289 		res = snd_ali_5451_peek(codec,port);
290 		if (!(res & 0x8000))
291 			return 0;
292 		if (!time_after_eq(end_time, jiffies))
293 			break;
294 		schedule_timeout_uninterruptible(1);
295 	}
296 
297 	snd_ali_5451_poke(codec, port, res & ~0x8000);
298 	dev_dbg(codec->card->dev, "ali_codec_ready: codec is not ready.\n ");
299 	return -EIO;
300 }
301 
302 static int snd_ali_stimer_ready(struct snd_ali *codec)
303 {
304 	unsigned long end_time;
305 	unsigned long dwChk1,dwChk2;
306 
307 	dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
308 	end_time = jiffies + msecs_to_jiffies(250);
309 
310 	for (;;) {
311 		dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
312 		if (dwChk2 != dwChk1)
313 			return 0;
314 		if (!time_after_eq(end_time, jiffies))
315 			break;
316 		schedule_timeout_uninterruptible(1);
317 	}
318 
319 	dev_err(codec->card->dev, "ali_stimer_read: stimer is not ready.\n");
320 	return -EIO;
321 }
322 
323 static void snd_ali_codec_poke(struct snd_ali *codec,int secondary,
324 			       unsigned short reg,
325 			       unsigned short val)
326 {
327 	unsigned int dwVal;
328 	unsigned int port;
329 
330 	if (reg >= 0x80) {
331 		dev_err(codec->card->dev,
332 			"ali_codec_poke: reg(%xh) invalid.\n", reg);
333 		return;
334 	}
335 
336 	port = codec->chregs.regs.ac97write;
337 
338 	if (snd_ali_codec_ready(codec, port) < 0)
339 		return;
340 	if (snd_ali_stimer_ready(codec) < 0)
341 		return;
342 
343 	dwVal  = (unsigned int) (reg & 0xff);
344 	dwVal |= 0x8000 | (val << 16);
345 	if (secondary)
346 		dwVal |= 0x0080;
347 	if (codec->revision == ALI_5451_V02)
348 		dwVal |= 0x0100;
349 
350 	snd_ali_5451_poke(codec, port, dwVal);
351 
352 	return ;
353 }
354 
355 static unsigned short snd_ali_codec_peek(struct snd_ali *codec,
356 					 int secondary,
357 					 unsigned short reg)
358 {
359 	unsigned int dwVal;
360 	unsigned int port;
361 
362 	if (reg >= 0x80) {
363 		dev_err(codec->card->dev,
364 			"ali_codec_peek: reg(%xh) invalid.\n", reg);
365 		return ~0;
366 	}
367 
368 	port = codec->chregs.regs.ac97read;
369 
370 	if (snd_ali_codec_ready(codec, port) < 0)
371 		return ~0;
372 	if (snd_ali_stimer_ready(codec) < 0)
373 		return ~0;
374 
375 	dwVal  = (unsigned int) (reg & 0xff);
376 	dwVal |= 0x8000;				/* bit 15*/
377 	if (secondary)
378 		dwVal |= 0x0080;
379 
380 	snd_ali_5451_poke(codec, port, dwVal);
381 
382 	if (snd_ali_stimer_ready(codec) < 0)
383 		return ~0;
384 	if (snd_ali_codec_ready(codec, port) < 0)
385 		return ~0;
386 
387 	return (snd_ali_5451_peek(codec, port) & 0xffff0000) >> 16;
388 }
389 
390 static void snd_ali_codec_write(struct snd_ac97 *ac97,
391 				unsigned short reg,
392 				unsigned short val )
393 {
394 	struct snd_ali *codec = ac97->private_data;
395 
396 	dev_dbg(codec->card->dev, "codec_write: reg=%xh data=%xh.\n", reg, val);
397 	if (reg == AC97_GPIO_STATUS) {
398 		outl((val << ALI_AC97_GPIO_DATA_SHIFT) | ALI_AC97_GPIO_ENABLE,
399 		     ALI_REG(codec, ALI_AC97_GPIO));
400 		return;
401 	}
402 	snd_ali_codec_poke(codec, ac97->num, reg, val);
403 	return ;
404 }
405 
406 
407 static unsigned short snd_ali_codec_read(struct snd_ac97 *ac97,
408 					 unsigned short reg)
409 {
410 	struct snd_ali *codec = ac97->private_data;
411 
412 	dev_dbg(codec->card->dev, "codec_read reg=%xh.\n", reg);
413 	return snd_ali_codec_peek(codec, ac97->num, reg);
414 }
415 
416 /*
417  *	AC97 Reset
418  */
419 
420 static int snd_ali_reset_5451(struct snd_ali *codec)
421 {
422 	struct pci_dev *pci_dev;
423 	unsigned short wCount, wReg;
424 	unsigned int   dwVal;
425 
426 	pci_dev = codec->pci_m1533;
427 	if (pci_dev) {
428 		pci_read_config_dword(pci_dev, 0x7c, &dwVal);
429 		pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
430 		mdelay(5);
431 		pci_read_config_dword(pci_dev, 0x7c, &dwVal);
432 		pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
433 		mdelay(5);
434 	}
435 
436 	pci_dev = codec->pci;
437 	pci_read_config_dword(pci_dev, 0x44, &dwVal);
438 	pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
439 	udelay(500);
440 	pci_read_config_dword(pci_dev, 0x44, &dwVal);
441 	pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
442 	mdelay(5);
443 
444 	wCount = 200;
445 	while(wCount--) {
446 		wReg = snd_ali_codec_peek(codec, 0, AC97_POWERDOWN);
447 		if ((wReg & 0x000f) == 0x000f)
448 			return 0;
449 		mdelay(5);
450 	}
451 
452 	/* non-fatal if you have a non PM capable codec */
453 	/* dev_warn(codec->card->dev, "ali5451: reset time out\n"); */
454 	return 0;
455 }
456 
457 /*
458  *  ALI 5451 Controller
459  */
460 
461 static void snd_ali_enable_special_channel(struct snd_ali *codec,
462 					   unsigned int channel)
463 {
464 	unsigned long dwVal;
465 
466 	dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
467 	dwVal |= 1 << (channel & 0x0000001f);
468 	outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
469 }
470 
471 static void snd_ali_disable_special_channel(struct snd_ali *codec,
472 					    unsigned int channel)
473 {
474 	unsigned long dwVal;
475 
476 	dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
477 	dwVal &= ~(1 << (channel & 0x0000001f));
478 	outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
479 }
480 
481 static void snd_ali_enable_address_interrupt(struct snd_ali *codec)
482 {
483 	unsigned int gc;
484 
485 	gc  = inl(ALI_REG(codec, ALI_GC_CIR));
486 	gc |= ENDLP_IE;
487 	gc |= MIDLP_IE;
488 	outl( gc, ALI_REG(codec, ALI_GC_CIR));
489 }
490 
491 static void snd_ali_disable_address_interrupt(struct snd_ali *codec)
492 {
493 	unsigned int gc;
494 
495 	gc  = inl(ALI_REG(codec, ALI_GC_CIR));
496 	gc &= ~ENDLP_IE;
497 	gc &= ~MIDLP_IE;
498 	outl(gc, ALI_REG(codec, ALI_GC_CIR));
499 }
500 
501 static void snd_ali_disable_voice_irq(struct snd_ali *codec,
502 				      unsigned int channel)
503 {
504 	unsigned int mask;
505 	struct snd_ali_channel_control *pchregs = &(codec->chregs);
506 
507 	dev_dbg(codec->card->dev, "disable_voice_irq channel=%d\n", channel);
508 
509 	mask = 1 << (channel & 0x1f);
510 	pchregs->data.ainten  = inl(ALI_REG(codec, pchregs->regs.ainten));
511 	pchregs->data.ainten &= ~mask;
512 	outl(pchregs->data.ainten, ALI_REG(codec, pchregs->regs.ainten));
513 }
514 
515 static int snd_ali_alloc_pcm_channel(struct snd_ali *codec, int channel)
516 {
517 	unsigned int idx =  channel & 0x1f;
518 
519 	if (codec->synth.chcnt >= ALI_CHANNELS){
520 		dev_err(codec->card->dev,
521 			   "ali_alloc_pcm_channel: no free channels.\n");
522 		return -1;
523 	}
524 
525 	if (!(codec->synth.chmap & (1 << idx))) {
526 		codec->synth.chmap |= 1 << idx;
527 		codec->synth.chcnt++;
528 		dev_dbg(codec->card->dev, "alloc_pcm_channel no. %d.\n", idx);
529 		return idx;
530 	}
531 	return -1;
532 }
533 
534 static int snd_ali_find_free_channel(struct snd_ali * codec, int rec)
535 {
536 	int idx;
537 	int result = -1;
538 
539 	dev_dbg(codec->card->dev,
540 		"find_free_channel: for %s\n", rec ? "rec" : "pcm");
541 
542 	/* recording */
543 	if (rec) {
544 		if (codec->spdif_support &&
545 		    (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
546 		     ALI_SPDIF_IN_SUPPORT))
547 			idx = ALI_SPDIF_IN_CHANNEL;
548 		else
549 			idx = ALI_PCM_IN_CHANNEL;
550 
551 		result = snd_ali_alloc_pcm_channel(codec, idx);
552 		if (result >= 0)
553 			return result;
554 		else {
555 			dev_err(codec->card->dev,
556 				"ali_find_free_channel: record channel is busy now.\n");
557 			return -1;
558 		}
559 	}
560 
561 	/* playback... */
562 	if (codec->spdif_support &&
563 	    (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
564 	     ALI_SPDIF_OUT_CH_ENABLE)) {
565 		idx = ALI_SPDIF_OUT_CHANNEL;
566 		result = snd_ali_alloc_pcm_channel(codec, idx);
567 		if (result >= 0)
568 			return result;
569 		else
570 			dev_err(codec->card->dev,
571 				"ali_find_free_channel: S/PDIF out channel is in busy now.\n");
572 	}
573 
574 	for (idx = 0; idx < ALI_CHANNELS; idx++) {
575 		result = snd_ali_alloc_pcm_channel(codec, idx);
576 		if (result >= 0)
577 			return result;
578 	}
579 	dev_err(codec->card->dev, "ali_find_free_channel: no free channels.\n");
580 	return -1;
581 }
582 
583 static void snd_ali_free_channel_pcm(struct snd_ali *codec, int channel)
584 {
585 	unsigned int idx = channel & 0x0000001f;
586 
587 	dev_dbg(codec->card->dev, "free_channel_pcm channel=%d\n", channel);
588 
589 	if (channel < 0 || channel >= ALI_CHANNELS)
590 		return;
591 
592 	if (!(codec->synth.chmap & (1 << idx))) {
593 		dev_err(codec->card->dev,
594 			"ali_free_channel_pcm: channel %d is not in use.\n",
595 			channel);
596 		return;
597 	} else {
598 		codec->synth.chmap &= ~(1 << idx);
599 		codec->synth.chcnt--;
600 	}
601 }
602 
603 static void snd_ali_stop_voice(struct snd_ali *codec, unsigned int channel)
604 {
605 	unsigned int mask = 1 << (channel & 0x1f);
606 
607 	dev_dbg(codec->card->dev, "stop_voice: channel=%d\n", channel);
608 	outl(mask, ALI_REG(codec, codec->chregs.regs.stop));
609 }
610 
611 /*
612  *    S/PDIF Part
613  */
614 
615 static void snd_ali_delay(struct snd_ali *codec,int interval)
616 {
617 	unsigned long  begintimer,currenttimer;
618 
619 	begintimer   = inl(ALI_REG(codec, ALI_STIMER));
620 	currenttimer = inl(ALI_REG(codec, ALI_STIMER));
621 
622 	while (currenttimer < begintimer + interval) {
623 		if (snd_ali_stimer_ready(codec) < 0)
624 			break;
625 		currenttimer = inl(ALI_REG(codec,  ALI_STIMER));
626 		cpu_relax();
627 	}
628 }
629 
630 static void snd_ali_detect_spdif_rate(struct snd_ali *codec)
631 {
632 	u16 wval;
633 	u16 count = 0;
634 	u8  bval, R1 = 0, R2;
635 
636 	bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
637 	bval |= 0x1F;
638 	outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL + 1));
639 
640 	while ((R1 < 0x0b || R1 > 0x0e) && R1 != 0x12 && count <= 50000) {
641 		count ++;
642 		snd_ali_delay(codec, 6);
643 		bval = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
644 		R1 = bval & 0x1F;
645 	}
646 
647 	if (count > 50000) {
648 		dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
649 		return;
650 	}
651 
652 	for (count = 0; count <= 50000; count++) {
653 		snd_ali_delay(codec, 6);
654 		bval = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
655 		R2 = bval & 0x1F;
656 		if (R2 != R1)
657 			R1 = R2;
658 		else
659 			break;
660 	}
661 
662 	if (count > 50000) {
663 		dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
664 		return;
665 	}
666 
667 	if (R2 >= 0x0b && R2 <= 0x0e) {
668 		wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
669 		wval &= 0xe0f0;
670 		wval |= (0x09 << 8) | 0x05;
671 		outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
672 
673 		bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3)) & 0xf0;
674 		outb(bval | 0x02, ALI_REG(codec, ALI_SPDIF_CS + 3));
675 	} else if (R2 == 0x12) {
676 		wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
677 		wval &= 0xe0f0;
678 		wval |= (0x0e << 8) | 0x08;
679 		outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
680 
681 		bval  = inb(ALI_REG(codec,ALI_SPDIF_CS + 3)) & 0xf0;
682 		outb(bval | 0x03, ALI_REG(codec, ALI_SPDIF_CS + 3));
683 	}
684 }
685 
686 static unsigned int snd_ali_get_spdif_in_rate(struct snd_ali *codec)
687 {
688 	u32	dwRate;
689 	u8	bval;
690 
691 	bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
692 	bval &= 0x7f;
693 	bval |= 0x40;
694 	outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL));
695 
696 	snd_ali_detect_spdif_rate(codec);
697 
698 	bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3));
699 	bval &= 0x0f;
700 
701 	switch (bval) {
702 	case 0: dwRate = 44100; break;
703 	case 1: dwRate = 48000; break;
704 	case 2: dwRate = 32000; break;
705 	default: dwRate = 0; break;
706 	}
707 
708 	return dwRate;
709 }
710 
711 static void snd_ali_enable_spdif_in(struct snd_ali *codec)
712 {
713 	unsigned int dwVal;
714 
715 	dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
716 	dwVal |= ALI_SPDIF_IN_SUPPORT;
717 	outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
718 
719 	dwVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
720 	dwVal |= 0x02;
721 	outb(dwVal, ALI_REG(codec, ALI_SPDIF_CTRL));
722 
723 	snd_ali_enable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
724 }
725 
726 static void snd_ali_disable_spdif_in(struct snd_ali *codec)
727 {
728 	unsigned int dwVal;
729 
730 	dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
731 	dwVal &= ~ALI_SPDIF_IN_SUPPORT;
732 	outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
733 
734 	snd_ali_disable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
735 }
736 
737 
738 static void snd_ali_set_spdif_out_rate(struct snd_ali *codec, unsigned int rate)
739 {
740 	unsigned char  bVal;
741 	unsigned int  dwRate;
742 
743 	switch (rate) {
744 	case 32000: dwRate = 0x300; break;
745 	case 48000: dwRate = 0x200; break;
746 	default: dwRate = 0; break;
747 	}
748 
749 	bVal  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
750 	bVal &= (unsigned char)(~(1<<6));
751 
752 	bVal |= 0x80;		/* select right */
753 	outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
754 	outb(dwRate | 0x20, ALI_REG(codec, ALI_SPDIF_CS + 2));
755 
756 	bVal &= ~0x80;	/* select left */
757 	outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
758 	outw(rate | 0x10, ALI_REG(codec, ALI_SPDIF_CS + 2));
759 }
760 
761 static void snd_ali_enable_spdif_out(struct snd_ali *codec)
762 {
763 	unsigned short wVal;
764 	unsigned char bVal;
765         struct pci_dev *pci_dev;
766 
767         pci_dev = codec->pci_m1533;
768         if (pci_dev == NULL)
769                 return;
770         pci_read_config_byte(pci_dev, 0x61, &bVal);
771         bVal |= 0x40;
772         pci_write_config_byte(pci_dev, 0x61, bVal);
773         pci_read_config_byte(pci_dev, 0x7d, &bVal);
774         bVal |= 0x01;
775         pci_write_config_byte(pci_dev, 0x7d, bVal);
776 
777         pci_read_config_byte(pci_dev, 0x7e, &bVal);
778         bVal &= (~0x20);
779         bVal |= 0x10;
780         pci_write_config_byte(pci_dev, 0x7e, bVal);
781 
782 	bVal = inb(ALI_REG(codec, ALI_SCTRL));
783 	outb(bVal | ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
784 
785 	bVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
786 	outb(bVal & ALI_SPDIF_OUT_CH_STATUS, ALI_REG(codec, ALI_SPDIF_CTRL));
787 
788 	wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
789 	wVal |= ALI_SPDIF_OUT_SEL_PCM;
790 	outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
791 	snd_ali_disable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
792 }
793 
794 static void snd_ali_enable_spdif_chnout(struct snd_ali *codec)
795 {
796 	unsigned short wVal;
797 
798 	wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
799    	wVal &= ~ALI_SPDIF_OUT_SEL_PCM;
800    	outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
801 /*
802 	wVal = inw(ALI_REG(codec, ALI_SPDIF_CS));
803 	if (flag & ALI_SPDIF_OUT_NON_PCM)
804    		wVal |= 0x0002;
805 	else
806 		wVal &= (~0x0002);
807    	outw(wVal, ALI_REG(codec, ALI_SPDIF_CS));
808 */
809 	snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
810 }
811 
812 static void snd_ali_disable_spdif_chnout(struct snd_ali *codec)
813 {
814 	unsigned short wVal;
815 
816   	wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
817    	wVal |= ALI_SPDIF_OUT_SEL_PCM;
818    	outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
819 
820 	snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
821 }
822 
823 static void snd_ali_disable_spdif_out(struct snd_ali *codec)
824 {
825 	unsigned char  bVal;
826 
827 	bVal = inb(ALI_REG(codec, ALI_SCTRL));
828 	outb(bVal & ~ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
829 
830 	snd_ali_disable_spdif_chnout(codec);
831 }
832 
833 static void snd_ali_update_ptr(struct snd_ali *codec, int channel)
834 {
835 	struct snd_ali_voice *pvoice;
836 	struct snd_ali_channel_control *pchregs;
837 	unsigned int old, mask;
838 
839 	pchregs = &(codec->chregs);
840 
841 	/* check if interrupt occurred for channel */
842 	old  = pchregs->data.aint;
843 	mask = 1U << (channel & 0x1f);
844 
845 	if (!(old & mask))
846 		return;
847 
848 	pvoice = &codec->synth.voices[channel];
849 
850 	udelay(100);
851 	spin_lock(&codec->reg_lock);
852 
853 	if (pvoice->pcm && pvoice->substream) {
854 		/* pcm interrupt */
855 		if (pvoice->running) {
856 			dev_dbg(codec->card->dev,
857 				"update_ptr: cso=%4.4x cspf=%d.\n",
858 				inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2)),
859 				(inl(ALI_REG(codec, ALI_CSPF)) & mask) == mask);
860 			spin_unlock(&codec->reg_lock);
861 			snd_pcm_period_elapsed(pvoice->substream);
862 			spin_lock(&codec->reg_lock);
863 		} else {
864 			snd_ali_stop_voice(codec, channel);
865 			snd_ali_disable_voice_irq(codec, channel);
866 		}
867 	} else if (codec->synth.voices[channel].synth) {
868 		/* synth interrupt */
869 	} else if (codec->synth.voices[channel].midi) {
870 		/* midi interrupt */
871 	} else {
872 		/* unknown interrupt */
873 		snd_ali_stop_voice(codec, channel);
874 		snd_ali_disable_voice_irq(codec, channel);
875 	}
876 	spin_unlock(&codec->reg_lock);
877 	outl(mask,ALI_REG(codec,pchregs->regs.aint));
878 	pchregs->data.aint = old & (~mask);
879 }
880 
881 static irqreturn_t snd_ali_card_interrupt(int irq, void *dev_id)
882 {
883 	struct snd_ali 	*codec = dev_id;
884 	int channel;
885 	unsigned int audio_int;
886 	struct snd_ali_channel_control *pchregs;
887 
888 	if (codec == NULL || !codec->hw_initialized)
889 		return IRQ_NONE;
890 
891 	audio_int = inl(ALI_REG(codec, ALI_MISCINT));
892 	if (!audio_int)
893 		return IRQ_NONE;
894 
895 	pchregs = &(codec->chregs);
896 	if (audio_int & ADDRESS_IRQ) {
897 		/* get interrupt status for all channels */
898 		pchregs->data.aint = inl(ALI_REG(codec, pchregs->regs.aint));
899 		for (channel = 0; channel < ALI_CHANNELS; channel++)
900 			snd_ali_update_ptr(codec, channel);
901 	}
902 	outl((TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
903 		ALI_REG(codec, ALI_MISCINT));
904 
905 	return IRQ_HANDLED;
906 }
907 
908 
909 static struct snd_ali_voice *snd_ali_alloc_voice(struct snd_ali * codec,
910 						 int type, int rec, int channel)
911 {
912 	struct snd_ali_voice *pvoice;
913 	int idx;
914 
915 	dev_dbg(codec->card->dev, "alloc_voice: type=%d rec=%d\n", type, rec);
916 
917 	spin_lock_irq(&codec->voice_alloc);
918 	if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
919 		idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
920 			snd_ali_find_free_channel(codec,rec);
921 		if (idx < 0) {
922 			dev_err(codec->card->dev, "ali_alloc_voice: err.\n");
923 			spin_unlock_irq(&codec->voice_alloc);
924 			return NULL;
925 		}
926 		pvoice = &(codec->synth.voices[idx]);
927 		pvoice->codec = codec;
928 		pvoice->use = 1;
929 		pvoice->pcm = 1;
930 		pvoice->mode = rec;
931 		spin_unlock_irq(&codec->voice_alloc);
932 		return pvoice;
933 	}
934 	spin_unlock_irq(&codec->voice_alloc);
935 	return NULL;
936 }
937 
938 
939 static void snd_ali_free_voice(struct snd_ali * codec,
940 			       struct snd_ali_voice *pvoice)
941 {
942 	void (*private_free)(void *);
943 	void *private_data;
944 
945 	dev_dbg(codec->card->dev, "free_voice: channel=%d\n", pvoice->number);
946 	if (!pvoice->use)
947 		return;
948 	snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
949 	spin_lock_irq(&codec->voice_alloc);
950 	private_free = pvoice->private_free;
951 	private_data = pvoice->private_data;
952 	pvoice->private_free = NULL;
953 	pvoice->private_data = NULL;
954 	if (pvoice->pcm)
955 		snd_ali_free_channel_pcm(codec, pvoice->number);
956 	pvoice->use = pvoice->pcm = pvoice->synth = 0;
957 	pvoice->substream = NULL;
958 	spin_unlock_irq(&codec->voice_alloc);
959 	if (private_free)
960 		private_free(private_data);
961 }
962 
963 
964 static void snd_ali_clear_voices(struct snd_ali *codec,
965 				 unsigned int v_min,
966 				 unsigned int v_max)
967 {
968 	unsigned int i;
969 
970 	for (i = v_min; i <= v_max; i++) {
971 		snd_ali_stop_voice(codec, i);
972 		snd_ali_disable_voice_irq(codec, i);
973 	}
974 }
975 
976 static void snd_ali_write_voice_regs(struct snd_ali *codec,
977 			 unsigned int Channel,
978 			 unsigned int LBA,
979 			 unsigned int CSO,
980 			 unsigned int ESO,
981 			 unsigned int DELTA,
982 			 unsigned int ALPHA_FMS,
983 			 unsigned int GVSEL,
984 			 unsigned int PAN,
985 			 unsigned int VOL,
986 			 unsigned int CTRL,
987 			 unsigned int EC)
988 {
989 	unsigned int ctlcmds[4];
990 
991 	outb((unsigned char)(Channel & 0x001f), ALI_REG(codec, ALI_GC_CIR));
992 
993 	ctlcmds[0] =  (CSO << 16) | (ALPHA_FMS & 0x0000ffff);
994 	ctlcmds[1] =  LBA;
995 	ctlcmds[2] =  (ESO << 16) | (DELTA & 0x0ffff);
996 	ctlcmds[3] =  (GVSEL << 31) |
997 		      ((PAN & 0x0000007f) << 24) |
998 		      ((VOL & 0x000000ff) << 16) |
999 		      ((CTRL & 0x0000000f) << 12) |
1000 		      (EC & 0x00000fff);
1001 
1002 	outb(Channel, ALI_REG(codec, ALI_GC_CIR));
1003 
1004 	outl(ctlcmds[0], ALI_REG(codec, ALI_CSO_ALPHA_FMS));
1005 	outl(ctlcmds[1], ALI_REG(codec, ALI_LBA));
1006 	outl(ctlcmds[2], ALI_REG(codec, ALI_ESO_DELTA));
1007 	outl(ctlcmds[3], ALI_REG(codec, ALI_GVSEL_PAN_VOC_CTRL_EC));
1008 
1009 	outl(0x30000000, ALI_REG(codec, ALI_EBUF1));	/* Still Mode */
1010 	outl(0x30000000, ALI_REG(codec, ALI_EBUF2));	/* Still Mode */
1011 }
1012 
1013 static unsigned int snd_ali_convert_rate(unsigned int rate, int rec)
1014 {
1015 	unsigned int delta;
1016 
1017 	if (rate < 4000)
1018 		rate = 4000;
1019 	if (rate > 48000)
1020 		rate = 48000;
1021 
1022 	if (rec) {
1023 		if (rate == 44100)
1024 			delta = 0x116a;
1025 		else if (rate == 8000)
1026 			delta = 0x6000;
1027 		else if (rate == 48000)
1028 			delta = 0x1000;
1029 		else
1030 			delta = ((48000 << 12) / rate) & 0x0000ffff;
1031 	} else {
1032 		if (rate == 44100)
1033 			delta = 0xeb3;
1034 		else if (rate == 8000)
1035 			delta = 0x2ab;
1036 		else if (rate == 48000)
1037 			delta = 0x1000;
1038 		else
1039 			delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
1040 	}
1041 
1042 	return delta;
1043 }
1044 
1045 static unsigned int snd_ali_control_mode(struct snd_pcm_substream *substream)
1046 {
1047 	unsigned int CTRL;
1048 	struct snd_pcm_runtime *runtime = substream->runtime;
1049 
1050 	/* set ctrl mode
1051 	   CTRL default: 8-bit (unsigned) mono, loop mode enabled
1052 	 */
1053 	CTRL = 0x00000001;
1054 	if (snd_pcm_format_width(runtime->format) == 16)
1055 		CTRL |= 0x00000008;	/* 16-bit data */
1056 	if (!snd_pcm_format_unsigned(runtime->format))
1057 		CTRL |= 0x00000002;	/* signed data */
1058 	if (runtime->channels > 1)
1059 		CTRL |= 0x00000004;	/* stereo data */
1060 	return CTRL;
1061 }
1062 
1063 /*
1064  *  PCM part
1065  */
1066 
1067 static int snd_ali_trigger(struct snd_pcm_substream *substream,
1068 			       int cmd)
1069 
1070 {
1071 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1072 	struct snd_pcm_substream *s;
1073 	unsigned int what, whati;
1074 	struct snd_ali_voice *pvoice, *evoice;
1075 	unsigned int val;
1076 	int do_start;
1077 
1078 	switch (cmd) {
1079 	case SNDRV_PCM_TRIGGER_START:
1080 	case SNDRV_PCM_TRIGGER_RESUME:
1081 		do_start = 1;
1082 		break;
1083 	case SNDRV_PCM_TRIGGER_STOP:
1084 	case SNDRV_PCM_TRIGGER_SUSPEND:
1085 		do_start = 0;
1086 		break;
1087 	default:
1088 		return -EINVAL;
1089 	}
1090 
1091 	what = whati = 0;
1092 	snd_pcm_group_for_each_entry(s, substream) {
1093 		if ((struct snd_ali *) snd_pcm_substream_chip(s) == codec) {
1094 			pvoice = s->runtime->private_data;
1095 			evoice = pvoice->extra;
1096 			what |= 1 << (pvoice->number & 0x1f);
1097 			if (evoice == NULL)
1098 				whati |= 1 << (pvoice->number & 0x1f);
1099 			else {
1100 				whati |= 1 << (evoice->number & 0x1f);
1101 				what |= 1 << (evoice->number & 0x1f);
1102 			}
1103 			if (do_start) {
1104 				pvoice->running = 1;
1105 				if (evoice != NULL)
1106 					evoice->running = 1;
1107 			} else {
1108 				pvoice->running = 0;
1109 				if (evoice != NULL)
1110 					evoice->running = 0;
1111 			}
1112 			snd_pcm_trigger_done(s, substream);
1113 		}
1114 	}
1115 	spin_lock(&codec->reg_lock);
1116 	if (!do_start)
1117 		outl(what, ALI_REG(codec, ALI_STOP));
1118 	val = inl(ALI_REG(codec, ALI_AINTEN));
1119 	if (do_start)
1120 		val |= whati;
1121 	else
1122 		val &= ~whati;
1123 	outl(val, ALI_REG(codec, ALI_AINTEN));
1124 	if (do_start)
1125 		outl(what, ALI_REG(codec, ALI_START));
1126 	dev_dbg(codec->card->dev, "trigger: what=%xh whati=%xh\n", what, whati);
1127 	spin_unlock(&codec->reg_lock);
1128 
1129 	return 0;
1130 }
1131 
1132 static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream,
1133 				      struct snd_pcm_hw_params *hw_params)
1134 {
1135 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1136 	struct snd_pcm_runtime *runtime = substream->runtime;
1137 	struct snd_ali_voice *pvoice = runtime->private_data;
1138 	struct snd_ali_voice *evoice = pvoice->extra;
1139 
1140 	/* voice management */
1141 
1142 	if (params_buffer_size(hw_params) / 2 !=
1143 	    params_period_size(hw_params)) {
1144 		if (!evoice) {
1145 			evoice = snd_ali_alloc_voice(codec,
1146 						     SNDRV_ALI_VOICE_TYPE_PCM,
1147 						     0, -1);
1148 			if (!evoice)
1149 				return -ENOMEM;
1150 			pvoice->extra = evoice;
1151 			evoice->substream = substream;
1152 		}
1153 	} else {
1154 		if (evoice) {
1155 			snd_ali_free_voice(codec, evoice);
1156 			pvoice->extra = evoice = NULL;
1157 		}
1158 	}
1159 
1160 	return 0;
1161 }
1162 
1163 static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
1164 {
1165 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1166 	struct snd_pcm_runtime *runtime = substream->runtime;
1167 	struct snd_ali_voice *pvoice = runtime->private_data;
1168 	struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL;
1169 
1170 	if (evoice) {
1171 		snd_ali_free_voice(codec, evoice);
1172 		pvoice->extra = NULL;
1173 	}
1174 	return 0;
1175 }
1176 
1177 static int snd_ali_playback_prepare(struct snd_pcm_substream *substream)
1178 {
1179 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1180 	struct snd_pcm_runtime *runtime = substream->runtime;
1181 	struct snd_ali_voice *pvoice = runtime->private_data;
1182 	struct snd_ali_voice *evoice = pvoice->extra;
1183 
1184 	unsigned int LBA;
1185 	unsigned int Delta;
1186 	unsigned int ESO;
1187 	unsigned int CTRL;
1188 	unsigned int GVSEL;
1189 	unsigned int PAN;
1190 	unsigned int VOL;
1191 	unsigned int EC;
1192 
1193 	dev_dbg(codec->card->dev, "playback_prepare ...\n");
1194 
1195 	spin_lock_irq(&codec->reg_lock);
1196 
1197 	/* set Delta (rate) value */
1198 	Delta = snd_ali_convert_rate(runtime->rate, 0);
1199 
1200 	if (pvoice->number == ALI_SPDIF_IN_CHANNEL ||
1201 	    pvoice->number == ALI_PCM_IN_CHANNEL)
1202 		snd_ali_disable_special_channel(codec, pvoice->number);
1203 	else if (codec->spdif_support &&
1204 		 (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
1205 		  ALI_SPDIF_OUT_CH_ENABLE)
1206 		 && pvoice->number == ALI_SPDIF_OUT_CHANNEL) {
1207 		snd_ali_set_spdif_out_rate(codec, runtime->rate);
1208 		Delta = 0x1000;
1209 	}
1210 
1211 	/* set Loop Back Address */
1212 	LBA = runtime->dma_addr;
1213 
1214 	/* set interrupt count size */
1215 	pvoice->count = runtime->period_size;
1216 
1217 	/* set target ESO for channel */
1218 	pvoice->eso = runtime->buffer_size;
1219 
1220 	dev_dbg(codec->card->dev, "playback_prepare: eso=%xh count=%xh\n",
1221 		       pvoice->eso, pvoice->count);
1222 
1223 	/* set ESO to capture first MIDLP interrupt */
1224 	ESO = pvoice->eso -1;
1225 	/* set ctrl mode */
1226 	CTRL = snd_ali_control_mode(substream);
1227 
1228 	GVSEL = 1;
1229 	PAN = 0;
1230 	VOL = 0;
1231 	EC = 0;
1232 	dev_dbg(codec->card->dev, "playback_prepare:\n");
1233 	dev_dbg(codec->card->dev,
1234 		"ch=%d, Rate=%d Delta=%xh,GVSEL=%xh,PAN=%xh,CTRL=%xh\n",
1235 		       pvoice->number,runtime->rate,Delta,GVSEL,PAN,CTRL);
1236 	snd_ali_write_voice_regs(codec,
1237 				 pvoice->number,
1238 				 LBA,
1239 				 0,	/* cso */
1240 				 ESO,
1241 				 Delta,
1242 				 0,	/* alpha */
1243 				 GVSEL,
1244 				 PAN,
1245 				 VOL,
1246 				 CTRL,
1247 				 EC);
1248 	if (evoice) {
1249 		evoice->count = pvoice->count;
1250 		evoice->eso = pvoice->count << 1;
1251 		ESO = evoice->eso - 1;
1252 		snd_ali_write_voice_regs(codec,
1253 					 evoice->number,
1254 					 LBA,
1255 					 0,	/* cso */
1256 					 ESO,
1257 					 Delta,
1258 					 0,	/* alpha */
1259 					 GVSEL,
1260 					 0x7f,
1261 					 0x3ff,
1262 					 CTRL,
1263 					 EC);
1264 	}
1265 	spin_unlock_irq(&codec->reg_lock);
1266 	return 0;
1267 }
1268 
1269 
1270 static int snd_ali_prepare(struct snd_pcm_substream *substream)
1271 {
1272 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1273 	struct snd_pcm_runtime *runtime = substream->runtime;
1274 	struct snd_ali_voice *pvoice = runtime->private_data;
1275 	unsigned int LBA;
1276 	unsigned int Delta;
1277 	unsigned int ESO;
1278 	unsigned int CTRL;
1279 	unsigned int GVSEL;
1280 	unsigned int PAN;
1281 	unsigned int VOL;
1282 	unsigned int EC;
1283 	u8	 bValue;
1284 
1285 	spin_lock_irq(&codec->reg_lock);
1286 
1287 	dev_dbg(codec->card->dev, "ali_prepare...\n");
1288 
1289 	snd_ali_enable_special_channel(codec,pvoice->number);
1290 
1291 	Delta = (pvoice->number == ALI_MODEM_IN_CHANNEL ||
1292 		 pvoice->number == ALI_MODEM_OUT_CHANNEL) ?
1293 		0x1000 : snd_ali_convert_rate(runtime->rate, pvoice->mode);
1294 
1295 	/* Prepare capture intr channel */
1296 	if (pvoice->number == ALI_SPDIF_IN_CHANNEL) {
1297 
1298 		unsigned int rate;
1299 
1300 		spin_unlock_irq(&codec->reg_lock);
1301 		if (codec->revision != ALI_5451_V02)
1302 			return -1;
1303 
1304 		rate = snd_ali_get_spdif_in_rate(codec);
1305 		if (rate == 0) {
1306 			dev_warn(codec->card->dev,
1307 				 "ali_capture_prepare: spdif rate detect err!\n");
1308 			rate = 48000;
1309 		}
1310 		spin_lock_irq(&codec->reg_lock);
1311 		bValue = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
1312 		if (bValue & 0x10) {
1313 			outb(bValue,ALI_REG(codec,ALI_SPDIF_CTRL));
1314 			dev_warn(codec->card->dev,
1315 				 "clear SPDIF parity error flag.\n");
1316 		}
1317 
1318 		if (rate != 48000)
1319 			Delta = ((rate << 12) / runtime->rate) & 0x00ffff;
1320 	}
1321 
1322 	/* set target ESO for channel  */
1323 	pvoice->eso = runtime->buffer_size;
1324 
1325 	/* set interrupt count size  */
1326 	pvoice->count = runtime->period_size;
1327 
1328 	/* set Loop Back Address  */
1329 	LBA = runtime->dma_addr;
1330 
1331 	/* set ESO to capture first MIDLP interrupt  */
1332 	ESO = pvoice->eso - 1;
1333 	CTRL = snd_ali_control_mode(substream);
1334 	GVSEL = 0;
1335 	PAN = 0x00;
1336 	VOL = 0x00;
1337 	EC = 0;
1338 
1339 	snd_ali_write_voice_regs(    codec,
1340 				     pvoice->number,
1341 				     LBA,
1342 				     0,	/* cso */
1343 				     ESO,
1344 				     Delta,
1345 				     0,	/* alpha */
1346 				     GVSEL,
1347 				     PAN,
1348 				     VOL,
1349 				     CTRL,
1350 				     EC);
1351 
1352 	spin_unlock_irq(&codec->reg_lock);
1353 
1354 	return 0;
1355 }
1356 
1357 
1358 static snd_pcm_uframes_t
1359 snd_ali_playback_pointer(struct snd_pcm_substream *substream)
1360 {
1361 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1362 	struct snd_pcm_runtime *runtime = substream->runtime;
1363 	struct snd_ali_voice *pvoice = runtime->private_data;
1364 	unsigned int cso;
1365 
1366 	spin_lock(&codec->reg_lock);
1367 	if (!pvoice->running) {
1368 		spin_unlock(&codec->reg_lock);
1369 		return 0;
1370 	}
1371 	outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1372 	cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1373 	spin_unlock(&codec->reg_lock);
1374 	dev_dbg(codec->card->dev, "playback pointer returned cso=%xh.\n", cso);
1375 
1376 	cso %= runtime->buffer_size;
1377 	return cso;
1378 }
1379 
1380 
1381 static snd_pcm_uframes_t snd_ali_pointer(struct snd_pcm_substream *substream)
1382 {
1383 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1384 	struct snd_pcm_runtime *runtime = substream->runtime;
1385 	struct snd_ali_voice *pvoice = runtime->private_data;
1386 	unsigned int cso;
1387 
1388 	spin_lock(&codec->reg_lock);
1389 	if (!pvoice->running) {
1390 		spin_unlock(&codec->reg_lock);
1391 		return 0;
1392 	}
1393 	outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1394 	cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1395 	spin_unlock(&codec->reg_lock);
1396 
1397 	cso %= runtime->buffer_size;
1398 	return cso;
1399 }
1400 
1401 static const struct snd_pcm_hardware snd_ali_playback =
1402 {
1403 	.info =		(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1404 			 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1405 			 SNDRV_PCM_INFO_MMAP_VALID |
1406 			 SNDRV_PCM_INFO_RESUME |
1407 			 SNDRV_PCM_INFO_SYNC_START),
1408 	.formats =	(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1409 			 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1410 	.rates =	SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1411 	.rate_min =		4000,
1412 	.rate_max =		48000,
1413 	.channels_min =		1,
1414 	.channels_max =		2,
1415 	.buffer_bytes_max =	(256*1024),
1416 	.period_bytes_min =	64,
1417 	.period_bytes_max =	(256*1024),
1418 	.periods_min =		1,
1419 	.periods_max =		1024,
1420 	.fifo_size =		0,
1421 };
1422 
1423 /*
1424  *  Capture support device description
1425  */
1426 
1427 static const struct snd_pcm_hardware snd_ali_capture =
1428 {
1429 	.info =		(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1430 			 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1431 			 SNDRV_PCM_INFO_MMAP_VALID |
1432 			 SNDRV_PCM_INFO_RESUME |
1433 			 SNDRV_PCM_INFO_SYNC_START),
1434 	.formats =	(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1435 			 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1436 	.rates =	SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1437 	.rate_min =		4000,
1438 	.rate_max =		48000,
1439 	.channels_min =		1,
1440 	.channels_max =		2,
1441 	.buffer_bytes_max =	(128*1024),
1442 	.period_bytes_min =	64,
1443 	.period_bytes_max =	(128*1024),
1444 	.periods_min =		1,
1445 	.periods_max =		1024,
1446 	.fifo_size =		0,
1447 };
1448 
1449 static void snd_ali_pcm_free_substream(struct snd_pcm_runtime *runtime)
1450 {
1451 	struct snd_ali_voice *pvoice = runtime->private_data;
1452 
1453 	if (pvoice)
1454 		snd_ali_free_voice(pvoice->codec, pvoice);
1455 }
1456 
1457 static int snd_ali_open(struct snd_pcm_substream *substream, int rec,
1458 			int channel, const struct snd_pcm_hardware *phw)
1459 {
1460 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1461 	struct snd_pcm_runtime *runtime = substream->runtime;
1462 	struct snd_ali_voice *pvoice;
1463 
1464 	pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec,
1465 				     channel);
1466 	if (!pvoice)
1467 		return -EAGAIN;
1468 
1469 	pvoice->substream = substream;
1470 	runtime->private_data = pvoice;
1471 	runtime->private_free = snd_ali_pcm_free_substream;
1472 
1473 	runtime->hw = *phw;
1474 	snd_pcm_set_sync(substream);
1475 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
1476 				     0, 64*1024);
1477 	return 0;
1478 }
1479 
1480 static int snd_ali_playback_open(struct snd_pcm_substream *substream)
1481 {
1482 	return snd_ali_open(substream, 0, -1, &snd_ali_playback);
1483 }
1484 
1485 static int snd_ali_capture_open(struct snd_pcm_substream *substream)
1486 {
1487 	return snd_ali_open(substream, 1, -1, &snd_ali_capture);
1488 }
1489 
1490 static int snd_ali_playback_close(struct snd_pcm_substream *substream)
1491 {
1492 	return 0;
1493 }
1494 
1495 static int snd_ali_close(struct snd_pcm_substream *substream)
1496 {
1497 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
1498 	struct snd_ali_voice *pvoice = substream->runtime->private_data;
1499 
1500 	snd_ali_disable_special_channel(codec,pvoice->number);
1501 
1502 	return 0;
1503 }
1504 
1505 static const struct snd_pcm_ops snd_ali_playback_ops = {
1506 	.open =		snd_ali_playback_open,
1507 	.close =	snd_ali_playback_close,
1508 	.hw_params =	snd_ali_playback_hw_params,
1509 	.hw_free =	snd_ali_playback_hw_free,
1510 	.prepare =	snd_ali_playback_prepare,
1511 	.trigger =	snd_ali_trigger,
1512 	.pointer =	snd_ali_playback_pointer,
1513 };
1514 
1515 static const struct snd_pcm_ops snd_ali_capture_ops = {
1516 	.open =		snd_ali_capture_open,
1517 	.close =	snd_ali_close,
1518 	.prepare =	snd_ali_prepare,
1519 	.trigger =	snd_ali_trigger,
1520 	.pointer =	snd_ali_pointer,
1521 };
1522 
1523 /*
1524  * Modem PCM
1525  */
1526 
1527 static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
1528 				 struct snd_pcm_hw_params *hw_params)
1529 {
1530 	struct snd_ali *chip = snd_pcm_substream_chip(substream);
1531 	unsigned int modem_num = chip->num_of_codecs - 1;
1532 	snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE,
1533 		       params_rate(hw_params));
1534 	snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
1535 	return 0;
1536 }
1537 
1538 static const struct snd_pcm_hardware snd_ali_modem =
1539 {
1540 	.info =		(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1541 			 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1542 			 SNDRV_PCM_INFO_MMAP_VALID |
1543 			 SNDRV_PCM_INFO_RESUME |
1544 			 SNDRV_PCM_INFO_SYNC_START),
1545 	.formats =	SNDRV_PCM_FMTBIT_S16_LE,
1546 	.rates =	(SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000 |
1547 			 SNDRV_PCM_RATE_16000),
1548 	.rate_min =		8000,
1549 	.rate_max =		16000,
1550 	.channels_min =		1,
1551 	.channels_max =		1,
1552 	.buffer_bytes_max =	(256*1024),
1553 	.period_bytes_min =	64,
1554 	.period_bytes_max =	(256*1024),
1555 	.periods_min =		1,
1556 	.periods_max =		1024,
1557 	.fifo_size =		0,
1558 };
1559 
1560 static int snd_ali_modem_open(struct snd_pcm_substream *substream, int rec,
1561 			      int channel)
1562 {
1563 	static const unsigned int rates[] = {8000, 9600, 12000, 16000};
1564 	static const struct snd_pcm_hw_constraint_list hw_constraint_rates = {
1565 		.count = ARRAY_SIZE(rates),
1566 		.list = rates,
1567 		.mask = 0,
1568 	};
1569 	int err = snd_ali_open(substream, rec, channel, &snd_ali_modem);
1570 
1571 	if (err)
1572 		return err;
1573 	return snd_pcm_hw_constraint_list(substream->runtime, 0,
1574 			SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
1575 }
1576 
1577 static int snd_ali_modem_playback_open(struct snd_pcm_substream *substream)
1578 {
1579 	return snd_ali_modem_open(substream, 0, ALI_MODEM_OUT_CHANNEL);
1580 }
1581 
1582 static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
1583 {
1584 	return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
1585 }
1586 
1587 static const struct snd_pcm_ops snd_ali_modem_playback_ops = {
1588 	.open =		snd_ali_modem_playback_open,
1589 	.close =	snd_ali_close,
1590 	.hw_params =	snd_ali_modem_hw_params,
1591 	.prepare =	snd_ali_prepare,
1592 	.trigger =	snd_ali_trigger,
1593 	.pointer =	snd_ali_pointer,
1594 };
1595 
1596 static const struct snd_pcm_ops snd_ali_modem_capture_ops = {
1597 	.open =		snd_ali_modem_capture_open,
1598 	.close =	snd_ali_close,
1599 	.hw_params =	snd_ali_modem_hw_params,
1600 	.prepare =	snd_ali_prepare,
1601 	.trigger =	snd_ali_trigger,
1602 	.pointer =	snd_ali_pointer,
1603 };
1604 
1605 
1606 struct ali_pcm_description {
1607 	char *name;
1608 	unsigned int playback_num;
1609 	unsigned int capture_num;
1610 	const struct snd_pcm_ops *playback_ops;
1611 	const struct snd_pcm_ops *capture_ops;
1612 	unsigned short class;
1613 };
1614 
1615 
1616 static void snd_ali_pcm_free(struct snd_pcm *pcm)
1617 {
1618 	struct snd_ali *codec = pcm->private_data;
1619 	codec->pcm[pcm->device] = NULL;
1620 }
1621 
1622 
1623 static int snd_ali_pcm(struct snd_ali *codec, int device,
1624 		       struct ali_pcm_description *desc)
1625 {
1626 	struct snd_pcm *pcm;
1627 	int err;
1628 
1629 	err = snd_pcm_new(codec->card, desc->name, device,
1630 			  desc->playback_num, desc->capture_num, &pcm);
1631 	if (err < 0) {
1632 		dev_err(codec->card->dev,
1633 			"snd_ali_pcm: err called snd_pcm_new.\n");
1634 		return err;
1635 	}
1636 	pcm->private_data = codec;
1637 	pcm->private_free = snd_ali_pcm_free;
1638 	if (desc->playback_ops)
1639 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1640 				desc->playback_ops);
1641 	if (desc->capture_ops)
1642 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1643 				desc->capture_ops);
1644 
1645 	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
1646 				       &codec->pci->dev, 64*1024, 128*1024);
1647 
1648 	pcm->info_flags = 0;
1649 	pcm->dev_class = desc->class;
1650 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1651 	strcpy(pcm->name, desc->name);
1652 	codec->pcm[0] = pcm;
1653 	return 0;
1654 }
1655 
1656 static struct ali_pcm_description ali_pcms[] = {
1657 	{ .name = "ALI 5451",
1658 	  .playback_num = ALI_CHANNELS,
1659 	  .capture_num = 1,
1660 	  .playback_ops = &snd_ali_playback_ops,
1661 	  .capture_ops = &snd_ali_capture_ops
1662 	},
1663 	{ .name = "ALI 5451 modem",
1664 	  .playback_num = 1,
1665 	  .capture_num = 1,
1666 	  .playback_ops = &snd_ali_modem_playback_ops,
1667 	  .capture_ops = &snd_ali_modem_capture_ops,
1668 	  .class = SNDRV_PCM_CLASS_MODEM
1669 	}
1670 };
1671 
1672 static int snd_ali_build_pcms(struct snd_ali *codec)
1673 {
1674 	int i, err;
1675 	for (i = 0; i < codec->num_of_codecs && i < ARRAY_SIZE(ali_pcms); i++) {
1676 		err = snd_ali_pcm(codec, i, &ali_pcms[i]);
1677 		if (err < 0)
1678 			return err;
1679 	}
1680 	return 0;
1681 }
1682 
1683 
1684 #define ALI5451_SPDIF(xname, xindex, value) \
1685 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
1686 .info = snd_ali5451_spdif_info, .get = snd_ali5451_spdif_get, \
1687 .put = snd_ali5451_spdif_put, .private_value = value}
1688 
1689 #define snd_ali5451_spdif_info		snd_ctl_boolean_mono_info
1690 
1691 static int snd_ali5451_spdif_get(struct snd_kcontrol *kcontrol,
1692 				 struct snd_ctl_elem_value *ucontrol)
1693 {
1694 	struct snd_ali *codec = kcontrol->private_data;
1695 	unsigned int spdif_enable;
1696 
1697 	spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1698 
1699 	spin_lock_irq(&codec->reg_lock);
1700 	switch (kcontrol->private_value) {
1701 	case 0:
1702 		spdif_enable = (codec->spdif_mask & 0x02) ? 1 : 0;
1703 		break;
1704 	case 1:
1705 		spdif_enable = ((codec->spdif_mask & 0x02) &&
1706 			  (codec->spdif_mask & 0x04)) ? 1 : 0;
1707 		break;
1708 	case 2:
1709 		spdif_enable = (codec->spdif_mask & 0x01) ? 1 : 0;
1710 		break;
1711 	default:
1712 		break;
1713 	}
1714 	ucontrol->value.integer.value[0] = spdif_enable;
1715 	spin_unlock_irq(&codec->reg_lock);
1716 	return 0;
1717 }
1718 
1719 static int snd_ali5451_spdif_put(struct snd_kcontrol *kcontrol,
1720 				 struct snd_ctl_elem_value *ucontrol)
1721 {
1722 	struct snd_ali *codec = kcontrol->private_data;
1723 	unsigned int change = 0, spdif_enable = 0;
1724 
1725 	spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1726 
1727 	spin_lock_irq(&codec->reg_lock);
1728 	switch (kcontrol->private_value) {
1729 	case 0:
1730 		change = (codec->spdif_mask & 0x02) ? 1 : 0;
1731 		change = change ^ spdif_enable;
1732 		if (change) {
1733 			if (spdif_enable) {
1734 				codec->spdif_mask |= 0x02;
1735 				snd_ali_enable_spdif_out(codec);
1736 			} else {
1737 				codec->spdif_mask &= ~(0x02);
1738 				codec->spdif_mask &= ~(0x04);
1739 				snd_ali_disable_spdif_out(codec);
1740 			}
1741 		}
1742 		break;
1743 	case 1:
1744 		change = (codec->spdif_mask & 0x04) ? 1 : 0;
1745 		change = change ^ spdif_enable;
1746 		if (change && (codec->spdif_mask & 0x02)) {
1747 			if (spdif_enable) {
1748 				codec->spdif_mask |= 0x04;
1749 				snd_ali_enable_spdif_chnout(codec);
1750 			} else {
1751 				codec->spdif_mask &= ~(0x04);
1752 				snd_ali_disable_spdif_chnout(codec);
1753 			}
1754 		}
1755 		break;
1756 	case 2:
1757 		change = (codec->spdif_mask & 0x01) ? 1 : 0;
1758 		change = change ^ spdif_enable;
1759 		if (change) {
1760 			if (spdif_enable) {
1761 				codec->spdif_mask |= 0x01;
1762 				snd_ali_enable_spdif_in(codec);
1763 			} else {
1764 				codec->spdif_mask &= ~(0x01);
1765 				snd_ali_disable_spdif_in(codec);
1766 			}
1767 		}
1768 		break;
1769 	default:
1770 		break;
1771 	}
1772 	spin_unlock_irq(&codec->reg_lock);
1773 
1774 	return change;
1775 }
1776 
1777 static const struct snd_kcontrol_new snd_ali5451_mixer_spdif[] = {
1778 	/* spdif aplayback switch */
1779 	/* FIXME: "IEC958 Playback Switch" may conflict with one on ac97_codec */
1780 	ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH), 0, 0),
1781 	/* spdif out to spdif channel */
1782 	ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Channel Output ",NONE,SWITCH), 0, 1),
1783 	/* spdif in from spdif channel */
1784 	ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), 0, 2)
1785 };
1786 
1787 static int snd_ali_mixer(struct snd_ali *codec)
1788 {
1789 	struct snd_ac97_template ac97;
1790 	unsigned int idx;
1791 	int i, err;
1792 	static const struct snd_ac97_bus_ops ops = {
1793 		.write = snd_ali_codec_write,
1794 		.read = snd_ali_codec_read,
1795 	};
1796 
1797 	err = snd_ac97_bus(codec->card, 0, &ops, codec, &codec->ac97_bus);
1798 	if (err < 0)
1799 		return err;
1800 
1801 	memset(&ac97, 0, sizeof(ac97));
1802 	ac97.private_data = codec;
1803 
1804 	for (i = 0; i < codec->num_of_codecs; i++) {
1805 		ac97.num = i;
1806 		err = snd_ac97_mixer(codec->ac97_bus, &ac97, &codec->ac97[i]);
1807 		if (err < 0) {
1808 			dev_err(codec->card->dev,
1809 				   "ali mixer %d creating error.\n", i);
1810 			if (i == 0)
1811 				return err;
1812 			codec->num_of_codecs = 1;
1813 			break;
1814 		}
1815 	}
1816 
1817 	if (codec->spdif_support) {
1818 		for (idx = 0; idx < ARRAY_SIZE(snd_ali5451_mixer_spdif); idx++) {
1819 			err = snd_ctl_add(codec->card,
1820 					  snd_ctl_new1(&snd_ali5451_mixer_spdif[idx], codec));
1821 			if (err < 0)
1822 				return err;
1823 		}
1824 	}
1825 	return 0;
1826 }
1827 
1828 #ifdef CONFIG_PM_SLEEP
1829 static int ali_suspend(struct device *dev)
1830 {
1831 	struct snd_card *card = dev_get_drvdata(dev);
1832 	struct snd_ali *chip = card->private_data;
1833 	struct snd_ali_image *im;
1834 	int i, j;
1835 
1836 	im = chip->image;
1837 	if (!im)
1838 		return 0;
1839 
1840 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1841 	for (i = 0; i < chip->num_of_codecs; i++)
1842 		snd_ac97_suspend(chip->ac97[i]);
1843 
1844 	spin_lock_irq(&chip->reg_lock);
1845 
1846 	im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
1847 	/* im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START)); */
1848 	im->regs[ALI_STOP >> 2] = inl(ALI_REG(chip, ALI_STOP));
1849 
1850 	/* disable all IRQ bits */
1851 	outl(0, ALI_REG(chip, ALI_MISCINT));
1852 
1853 	for (i = 0; i < ALI_GLOBAL_REGS; i++) {
1854 		if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP))
1855 			continue;
1856 		im->regs[i] = inl(ALI_REG(chip, i*4));
1857 	}
1858 
1859 	for (i = 0; i < ALI_CHANNELS; i++) {
1860 		outb(i, ALI_REG(chip, ALI_GC_CIR));
1861 		for (j = 0; j < ALI_CHANNEL_REGS; j++)
1862 			im->channel_regs[i][j] = inl(ALI_REG(chip, j*4 + 0xe0));
1863 	}
1864 
1865 	/* stop all HW channel */
1866 	outl(0xffffffff, ALI_REG(chip, ALI_STOP));
1867 
1868 	spin_unlock_irq(&chip->reg_lock);
1869 	return 0;
1870 }
1871 
1872 static int ali_resume(struct device *dev)
1873 {
1874 	struct snd_card *card = dev_get_drvdata(dev);
1875 	struct snd_ali *chip = card->private_data;
1876 	struct snd_ali_image *im;
1877 	int i, j;
1878 
1879 	im = chip->image;
1880 	if (!im)
1881 		return 0;
1882 
1883 	spin_lock_irq(&chip->reg_lock);
1884 
1885 	for (i = 0; i < ALI_CHANNELS; i++) {
1886 		outb(i, ALI_REG(chip, ALI_GC_CIR));
1887 		for (j = 0; j < ALI_CHANNEL_REGS; j++)
1888 			outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
1889 	}
1890 
1891 	for (i = 0; i < ALI_GLOBAL_REGS; i++) {
1892 		if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) ||
1893 		    (i*4 == ALI_START))
1894 			continue;
1895 		outl(im->regs[i], ALI_REG(chip, i*4));
1896 	}
1897 
1898 	/* start HW channel */
1899 	outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
1900 	/* restore IRQ enable bits */
1901 	outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
1902 
1903 	spin_unlock_irq(&chip->reg_lock);
1904 
1905 	for (i = 0 ; i < chip->num_of_codecs; i++)
1906 		snd_ac97_resume(chip->ac97[i]);
1907 
1908 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1909 	return 0;
1910 }
1911 
1912 static SIMPLE_DEV_PM_OPS(ali_pm, ali_suspend, ali_resume);
1913 #define ALI_PM_OPS	&ali_pm
1914 #else
1915 #define ALI_PM_OPS	NULL
1916 #endif /* CONFIG_PM_SLEEP */
1917 
1918 static int snd_ali_free(struct snd_ali * codec)
1919 {
1920 	if (codec->hw_initialized)
1921 		snd_ali_disable_address_interrupt(codec);
1922 	if (codec->irq >= 0)
1923 		free_irq(codec->irq, codec);
1924 	if (codec->port)
1925 		pci_release_regions(codec->pci);
1926 	pci_disable_device(codec->pci);
1927 #ifdef CONFIG_PM_SLEEP
1928 	kfree(codec->image);
1929 #endif
1930 	pci_dev_put(codec->pci_m1533);
1931 	pci_dev_put(codec->pci_m7101);
1932 	kfree(codec);
1933 	return 0;
1934 }
1935 
1936 static int snd_ali_chip_init(struct snd_ali *codec)
1937 {
1938 	unsigned int legacy;
1939 	unsigned char temp;
1940 	struct pci_dev *pci_dev;
1941 
1942 	dev_dbg(codec->card->dev, "chip initializing ...\n");
1943 
1944 	if (snd_ali_reset_5451(codec)) {
1945 		dev_err(codec->card->dev, "ali_chip_init: reset 5451 error.\n");
1946 		return -1;
1947 	}
1948 
1949 	if (codec->revision == ALI_5451_V02) {
1950         	pci_dev = codec->pci_m1533;
1951 		pci_read_config_byte(pci_dev, 0x59, &temp);
1952 		temp |= 0x80;
1953 		pci_write_config_byte(pci_dev, 0x59, temp);
1954 
1955 		pci_dev = codec->pci_m7101;
1956 		pci_read_config_byte(pci_dev, 0xb8, &temp);
1957 		temp |= 0x20;
1958 		pci_write_config_byte(pci_dev, 0xB8, temp);
1959 	}
1960 
1961 	pci_read_config_dword(codec->pci, 0x44, &legacy);
1962 	legacy &= 0xff00ff00;
1963 	legacy |= 0x000800aa;
1964 	pci_write_config_dword(codec->pci, 0x44, legacy);
1965 
1966 	outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
1967 	outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
1968 	outl(0xffffffff, ALI_REG(codec, ALI_AINT));
1969 	outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
1970 	outb(0x10, 	 ALI_REG(codec, ALI_MPUR2));
1971 
1972 	codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
1973 	codec->ac97_ext_status = snd_ali_codec_peek(codec, 0,
1974 						    AC97_EXTENDED_STATUS);
1975 	if (codec->spdif_support) {
1976 		snd_ali_enable_spdif_out(codec);
1977 		codec->spdif_mask = 0x00000002;
1978 	}
1979 
1980 	codec->num_of_codecs = 1;
1981 
1982 	/* secondary codec - modem */
1983 	if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
1984 		codec->num_of_codecs++;
1985 		outl(inl(ALI_REG(codec, ALI_SCTRL)) |
1986 		     (ALI_SCTRL_LINE_IN2 | ALI_SCTRL_GPIO_IN2 |
1987 		      ALI_SCTRL_LINE_OUT_EN),
1988 		     ALI_REG(codec, ALI_SCTRL));
1989 	}
1990 
1991 	dev_dbg(codec->card->dev, "chip initialize succeed.\n");
1992 	return 0;
1993 
1994 }
1995 
1996 /* proc for register dump */
1997 static void snd_ali_proc_read(struct snd_info_entry *entry,
1998 			      struct snd_info_buffer *buf)
1999 {
2000 	struct snd_ali *codec = entry->private_data;
2001 	int i;
2002 	for (i = 0; i < 256 ; i+= 4)
2003 		snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2004 }
2005 
2006 static void snd_ali_proc_init(struct snd_ali *codec)
2007 {
2008 	snd_card_ro_proc_new(codec->card, "ali5451", codec, snd_ali_proc_read);
2009 }
2010 
2011 static int snd_ali_resources(struct snd_ali *codec)
2012 {
2013 	int err;
2014 
2015 	dev_dbg(codec->card->dev, "resources allocation ...\n");
2016 	err = pci_request_regions(codec->pci, "ALI 5451");
2017 	if (err < 0)
2018 		return err;
2019 	codec->port = pci_resource_start(codec->pci, 0);
2020 
2021 	if (request_irq(codec->pci->irq, snd_ali_card_interrupt,
2022 			IRQF_SHARED, KBUILD_MODNAME, codec)) {
2023 		dev_err(codec->card->dev, "Unable to request irq.\n");
2024 		return -EBUSY;
2025 	}
2026 	codec->irq = codec->pci->irq;
2027 	codec->card->sync_irq = codec->irq;
2028 	dev_dbg(codec->card->dev, "resources allocated.\n");
2029 	return 0;
2030 }
2031 static int snd_ali_dev_free(struct snd_device *device)
2032 {
2033 	struct snd_ali *codec = device->device_data;
2034 	snd_ali_free(codec);
2035 	return 0;
2036 }
2037 
2038 static int snd_ali_create(struct snd_card *card,
2039 			  struct pci_dev *pci,
2040 			  int pcm_streams,
2041 			  int spdif_support,
2042 			  struct snd_ali **r_ali)
2043 {
2044 	struct snd_ali *codec;
2045 	int i, err;
2046 	unsigned short cmdw;
2047 	static const struct snd_device_ops ops = {
2048 		.dev_free = snd_ali_dev_free,
2049         };
2050 
2051 	*r_ali = NULL;
2052 
2053 	dev_dbg(card->dev, "creating ...\n");
2054 
2055 	/* enable PCI device */
2056 	err = pci_enable_device(pci);
2057 	if (err < 0)
2058 		return err;
2059 	/* check, if we can restrict PCI DMA transfers to 31 bits */
2060 	if (dma_set_mask(&pci->dev, DMA_BIT_MASK(31)) < 0 ||
2061 	    dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(31)) < 0) {
2062 		dev_err(card->dev,
2063 			"architecture does not support 31bit PCI busmaster DMA\n");
2064 		pci_disable_device(pci);
2065 		return -ENXIO;
2066 	}
2067 
2068 	codec = kzalloc(sizeof(*codec), GFP_KERNEL);
2069 	if (!codec) {
2070 		pci_disable_device(pci);
2071 		return -ENOMEM;
2072 	}
2073 
2074 	spin_lock_init(&codec->reg_lock);
2075 	spin_lock_init(&codec->voice_alloc);
2076 
2077 	codec->card = card;
2078 	codec->pci = pci;
2079 	codec->irq = -1;
2080 	codec->revision = pci->revision;
2081 	codec->spdif_support = spdif_support;
2082 
2083 	if (pcm_streams < 1)
2084 		pcm_streams = 1;
2085 	if (pcm_streams > 32)
2086 		pcm_streams = 32;
2087 
2088 	pci_set_master(pci);
2089 	pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2090 	if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2091 		cmdw |= PCI_COMMAND_IO;
2092 		pci_write_config_word(pci, PCI_COMMAND, cmdw);
2093 	}
2094 	pci_set_master(pci);
2095 
2096 	if (snd_ali_resources(codec)) {
2097 		snd_ali_free(codec);
2098 		return -EBUSY;
2099 	}
2100 
2101 	codec->synth.chmap = 0;
2102 	codec->synth.chcnt = 0;
2103 	codec->spdif_mask = 0;
2104 	codec->synth.synthcount = 0;
2105 
2106 	if (codec->revision == ALI_5451_V02)
2107 		codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2108 	else
2109 		codec->chregs.regs.ac97read = ALI_AC97_READ;
2110 	codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2111 
2112 	codec->chregs.regs.start  = ALI_START;
2113 	codec->chregs.regs.stop   = ALI_STOP;
2114 	codec->chregs.regs.aint   = ALI_AINT;
2115 	codec->chregs.regs.ainten = ALI_AINTEN;
2116 
2117 	codec->chregs.data.start  = 0x00;
2118 	codec->chregs.data.stop   = 0x00;
2119 	codec->chregs.data.aint   = 0x00;
2120 	codec->chregs.data.ainten = 0x00;
2121 
2122 	/* M1533: southbridge */
2123 	codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2124 	if (!codec->pci_m1533) {
2125 		dev_err(card->dev, "cannot find ALi 1533 chip.\n");
2126 		snd_ali_free(codec);
2127 		return -ENODEV;
2128 	}
2129 	/* M7101: power management */
2130 	codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2131 	if (!codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2132 		dev_err(card->dev, "cannot find ALi 7101 chip.\n");
2133 		snd_ali_free(codec);
2134 		return -ENODEV;
2135 	}
2136 
2137 	dev_dbg(card->dev, "snd_device_new is called.\n");
2138 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops);
2139 	if (err < 0) {
2140 		snd_ali_free(codec);
2141 		return err;
2142 	}
2143 
2144 	/* initialise synth voices*/
2145 	for (i = 0; i < ALI_CHANNELS; i++)
2146 		codec->synth.voices[i].number = i;
2147 
2148 	err = snd_ali_chip_init(codec);
2149 	if (err < 0) {
2150 		dev_err(card->dev, "ali create: chip init error.\n");
2151 		return err;
2152 	}
2153 
2154 #ifdef CONFIG_PM_SLEEP
2155 	codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2156 	if (!codec->image)
2157 		dev_warn(card->dev, "can't allocate apm buffer\n");
2158 #endif
2159 
2160 	snd_ali_enable_address_interrupt(codec);
2161 	codec->hw_initialized = 1;
2162 
2163 	*r_ali = codec;
2164 	dev_dbg(card->dev, "created.\n");
2165 	return 0;
2166 }
2167 
2168 static int snd_ali_probe(struct pci_dev *pci,
2169 			 const struct pci_device_id *pci_id)
2170 {
2171 	struct snd_card *card;
2172 	struct snd_ali *codec;
2173 	int err;
2174 
2175 	dev_dbg(&pci->dev, "probe ...\n");
2176 
2177 	err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2178 	if (err < 0)
2179 		return err;
2180 
2181 	err = snd_ali_create(card, pci, pcm_channels, spdif, &codec);
2182 	if (err < 0)
2183 		goto error;
2184 	card->private_data = codec;
2185 
2186 	dev_dbg(&pci->dev, "mixer building ...\n");
2187 	err = snd_ali_mixer(codec);
2188 	if (err < 0)
2189 		goto error;
2190 
2191 	dev_dbg(&pci->dev, "pcm building ...\n");
2192 	err = snd_ali_build_pcms(codec);
2193 	if (err < 0)
2194 		goto error;
2195 
2196 	snd_ali_proc_init(codec);
2197 
2198 	strcpy(card->driver, "ALI5451");
2199 	strcpy(card->shortname, "ALI 5451");
2200 
2201 	sprintf(card->longname, "%s at 0x%lx, irq %i",
2202 		card->shortname, codec->port, codec->irq);
2203 
2204 	dev_dbg(&pci->dev, "register card.\n");
2205 	err = snd_card_register(card);
2206 	if (err < 0)
2207 		goto error;
2208 
2209 	pci_set_drvdata(pci, card);
2210 	return 0;
2211 
2212  error:
2213 	snd_card_free(card);
2214 	return err;
2215 }
2216 
2217 static void snd_ali_remove(struct pci_dev *pci)
2218 {
2219 	snd_card_free(pci_get_drvdata(pci));
2220 }
2221 
2222 static struct pci_driver ali5451_driver = {
2223 	.name = KBUILD_MODNAME,
2224 	.id_table = snd_ali_ids,
2225 	.probe = snd_ali_probe,
2226 	.remove = snd_ali_remove,
2227 	.driver = {
2228 		.pm = ALI_PM_OPS,
2229 	},
2230 };
2231 
2232 module_pci_driver(ali5451_driver);
2233