xref: /openbmc/linux/sound/pci/trident/trident_main.c (revision 1ab142d4)
1 /*
2  *  Maintained by Jaroslav Kysela <perex@perex.cz>
3  *  Originated by audio@tridentmicro.com
4  *  Fri Feb 19 15:55:28 MST 1999
5  *  Routines for control of Trident 4DWave (DX and NX) chip
6  *
7  *  BUGS:
8  *
9  *  TODO:
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  *  SiS7018 S/PDIF support by Thomas Winischhofer <thomas@winischhofer.net>
28  */
29 
30 #include <linux/delay.h>
31 #include <linux/init.h>
32 #include <linux/interrupt.h>
33 #include <linux/pci.h>
34 #include <linux/slab.h>
35 #include <linux/vmalloc.h>
36 #include <linux/gameport.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/export.h>
39 
40 #include <sound/core.h>
41 #include <sound/info.h>
42 #include <sound/control.h>
43 #include <sound/tlv.h>
44 #include <sound/trident.h>
45 #include <sound/asoundef.h>
46 
47 #include <asm/io.h>
48 
49 static int snd_trident_pcm_mixer_build(struct snd_trident *trident,
50 				       struct snd_trident_voice * voice,
51 				       struct snd_pcm_substream *substream);
52 static int snd_trident_pcm_mixer_free(struct snd_trident *trident,
53 				      struct snd_trident_voice * voice,
54 				      struct snd_pcm_substream *substream);
55 static irqreturn_t snd_trident_interrupt(int irq, void *dev_id);
56 static int snd_trident_sis_reset(struct snd_trident *trident);
57 
58 static void snd_trident_clear_voices(struct snd_trident * trident,
59 				     unsigned short v_min, unsigned short v_max);
60 static int snd_trident_free(struct snd_trident *trident);
61 
62 /*
63  *  common I/O routines
64  */
65 
66 
67 #if 0
68 static void snd_trident_print_voice_regs(struct snd_trident *trident, int voice)
69 {
70 	unsigned int val, tmp;
71 
72 	printk(KERN_DEBUG "Trident voice %i:\n", voice);
73 	outb(voice, TRID_REG(trident, T4D_LFO_GC_CIR));
74 	val = inl(TRID_REG(trident, CH_LBA));
75 	printk(KERN_DEBUG "LBA: 0x%x\n", val);
76 	val = inl(TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
77 	printk(KERN_DEBUG "GVSel: %i\n", val >> 31);
78 	printk(KERN_DEBUG "Pan: 0x%x\n", (val >> 24) & 0x7f);
79 	printk(KERN_DEBUG "Vol: 0x%x\n", (val >> 16) & 0xff);
80 	printk(KERN_DEBUG "CTRL: 0x%x\n", (val >> 12) & 0x0f);
81 	printk(KERN_DEBUG "EC: 0x%x\n", val & 0x0fff);
82 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
83 		val = inl(TRID_REG(trident, CH_DX_CSO_ALPHA_FMS));
84 		printk(KERN_DEBUG "CSO: 0x%x\n", val >> 16);
85 		printk("Alpha: 0x%x\n", (val >> 4) & 0x0fff);
86 		printk(KERN_DEBUG "FMS: 0x%x\n", val & 0x0f);
87 		val = inl(TRID_REG(trident, CH_DX_ESO_DELTA));
88 		printk(KERN_DEBUG "ESO: 0x%x\n", val >> 16);
89 		printk(KERN_DEBUG "Delta: 0x%x\n", val & 0xffff);
90 		val = inl(TRID_REG(trident, CH_DX_FMC_RVOL_CVOL));
91 	} else {		// TRIDENT_DEVICE_ID_NX
92 		val = inl(TRID_REG(trident, CH_NX_DELTA_CSO));
93 		tmp = (val >> 24) & 0xff;
94 		printk(KERN_DEBUG "CSO: 0x%x\n", val & 0x00ffffff);
95 		val = inl(TRID_REG(trident, CH_NX_DELTA_ESO));
96 		tmp |= (val >> 16) & 0xff00;
97 		printk(KERN_DEBUG "Delta: 0x%x\n", tmp);
98 		printk(KERN_DEBUG "ESO: 0x%x\n", val & 0x00ffffff);
99 		val = inl(TRID_REG(trident, CH_NX_ALPHA_FMS_FMC_RVOL_CVOL));
100 		printk(KERN_DEBUG "Alpha: 0x%x\n", val >> 20);
101 		printk(KERN_DEBUG "FMS: 0x%x\n", (val >> 16) & 0x0f);
102 	}
103 	printk(KERN_DEBUG "FMC: 0x%x\n", (val >> 14) & 3);
104 	printk(KERN_DEBUG "RVol: 0x%x\n", (val >> 7) & 0x7f);
105 	printk(KERN_DEBUG "CVol: 0x%x\n", val & 0x7f);
106 }
107 #endif
108 
109 /*---------------------------------------------------------------------------
110    unsigned short snd_trident_codec_read(struct snd_ac97 *ac97, unsigned short reg)
111 
112    Description: This routine will do all of the reading from the external
113                 CODEC (AC97).
114 
115    Parameters:  ac97 - ac97 codec structure
116                 reg - CODEC register index, from AC97 Hal.
117 
118    returns:     16 bit value read from the AC97.
119 
120   ---------------------------------------------------------------------------*/
121 static unsigned short snd_trident_codec_read(struct snd_ac97 *ac97, unsigned short reg)
122 {
123 	unsigned int data = 0, treg;
124 	unsigned short count = 0xffff;
125 	unsigned long flags;
126 	struct snd_trident *trident = ac97->private_data;
127 
128 	spin_lock_irqsave(&trident->reg_lock, flags);
129 	if (trident->device == TRIDENT_DEVICE_ID_DX) {
130 		data = (DX_AC97_BUSY_READ | (reg & 0x000000ff));
131 		outl(data, TRID_REG(trident, DX_ACR1_AC97_R));
132 		do {
133 			data = inl(TRID_REG(trident, DX_ACR1_AC97_R));
134 			if ((data & DX_AC97_BUSY_READ) == 0)
135 				break;
136 		} while (--count);
137 	} else if (trident->device == TRIDENT_DEVICE_ID_NX) {
138 		data = (NX_AC97_BUSY_READ | (reg & 0x000000ff));
139 		treg = ac97->num == 0 ? NX_ACR2_AC97_R_PRIMARY : NX_ACR3_AC97_R_SECONDARY;
140 		outl(data, TRID_REG(trident, treg));
141 		do {
142 			data = inl(TRID_REG(trident, treg));
143 			if ((data & 0x00000C00) == 0)
144 				break;
145 		} while (--count);
146 	} else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
147 		data = SI_AC97_BUSY_READ | SI_AC97_AUDIO_BUSY | (reg & 0x000000ff);
148 		if (ac97->num == 1)
149 			data |= SI_AC97_SECONDARY;
150 		outl(data, TRID_REG(trident, SI_AC97_READ));
151 		do {
152 			data = inl(TRID_REG(trident, SI_AC97_READ));
153 			if ((data & (SI_AC97_BUSY_READ)) == 0)
154 				break;
155 		} while (--count);
156 	}
157 
158 	if (count == 0 && !trident->ac97_detect) {
159 		snd_printk(KERN_ERR "ac97 codec read TIMEOUT [0x%x/0x%x]!!!\n",
160 			   reg, data);
161 		data = 0;
162 	}
163 
164 	spin_unlock_irqrestore(&trident->reg_lock, flags);
165 	return ((unsigned short) (data >> 16));
166 }
167 
168 /*---------------------------------------------------------------------------
169    void snd_trident_codec_write(struct snd_ac97 *ac97, unsigned short reg,
170    unsigned short wdata)
171 
172    Description: This routine will do all of the writing to the external
173                 CODEC (AC97).
174 
175    Parameters:	ac97 - ac97 codec structure
176    	        reg - CODEC register index, from AC97 Hal.
177                 data  - Lower 16 bits are the data to write to CODEC.
178 
179    returns:     TRUE if everything went ok, else FALSE.
180 
181   ---------------------------------------------------------------------------*/
182 static void snd_trident_codec_write(struct snd_ac97 *ac97, unsigned short reg,
183 				    unsigned short wdata)
184 {
185 	unsigned int address, data;
186 	unsigned short count = 0xffff;
187 	unsigned long flags;
188 	struct snd_trident *trident = ac97->private_data;
189 
190 	data = ((unsigned long) wdata) << 16;
191 
192 	spin_lock_irqsave(&trident->reg_lock, flags);
193 	if (trident->device == TRIDENT_DEVICE_ID_DX) {
194 		address = DX_ACR0_AC97_W;
195 
196 		/* read AC-97 write register status */
197 		do {
198 			if ((inw(TRID_REG(trident, address)) & DX_AC97_BUSY_WRITE) == 0)
199 				break;
200 		} while (--count);
201 
202 		data |= (DX_AC97_BUSY_WRITE | (reg & 0x000000ff));
203 	} else if (trident->device == TRIDENT_DEVICE_ID_NX) {
204 		address = NX_ACR1_AC97_W;
205 
206 		/* read AC-97 write register status */
207 		do {
208 			if ((inw(TRID_REG(trident, address)) & NX_AC97_BUSY_WRITE) == 0)
209 				break;
210 		} while (--count);
211 
212 		data |= (NX_AC97_BUSY_WRITE | (ac97->num << 8) | (reg & 0x000000ff));
213 	} else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
214 		address = SI_AC97_WRITE;
215 
216 		/* read AC-97 write register status */
217 		do {
218 			if ((inw(TRID_REG(trident, address)) & (SI_AC97_BUSY_WRITE)) == 0)
219 				break;
220 		} while (--count);
221 
222 		data |= SI_AC97_BUSY_WRITE | SI_AC97_AUDIO_BUSY | (reg & 0x000000ff);
223 		if (ac97->num == 1)
224 			data |= SI_AC97_SECONDARY;
225 	} else {
226 		address = 0;	/* keep GCC happy */
227 		count = 0;	/* return */
228 	}
229 
230 	if (count == 0) {
231 		spin_unlock_irqrestore(&trident->reg_lock, flags);
232 		return;
233 	}
234 	outl(data, TRID_REG(trident, address));
235 	spin_unlock_irqrestore(&trident->reg_lock, flags);
236 }
237 
238 /*---------------------------------------------------------------------------
239    void snd_trident_enable_eso(struct snd_trident *trident)
240 
241    Description: This routine will enable end of loop interrupts.
242                 End of loop interrupts will occur when a running
243                 channel reaches ESO.
244                 Also enables middle of loop interrupts.
245 
246    Parameters:  trident - pointer to target device class for 4DWave.
247 
248   ---------------------------------------------------------------------------*/
249 
250 static void snd_trident_enable_eso(struct snd_trident * trident)
251 {
252 	unsigned int val;
253 
254 	val = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
255 	val |= ENDLP_IE;
256 	val |= MIDLP_IE;
257 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
258 		val |= BANK_B_EN;
259 	outl(val, TRID_REG(trident, T4D_LFO_GC_CIR));
260 }
261 
262 /*---------------------------------------------------------------------------
263    void snd_trident_disable_eso(struct snd_trident *trident)
264 
265    Description: This routine will disable end of loop interrupts.
266                 End of loop interrupts will occur when a running
267                 channel reaches ESO.
268                 Also disables middle of loop interrupts.
269 
270    Parameters:
271                 trident - pointer to target device class for 4DWave.
272 
273    returns:     TRUE if everything went ok, else FALSE.
274 
275   ---------------------------------------------------------------------------*/
276 
277 static void snd_trident_disable_eso(struct snd_trident * trident)
278 {
279 	unsigned int tmp;
280 
281 	tmp = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
282 	tmp &= ~ENDLP_IE;
283 	tmp &= ~MIDLP_IE;
284 	outl(tmp, TRID_REG(trident, T4D_LFO_GC_CIR));
285 }
286 
287 /*---------------------------------------------------------------------------
288    void snd_trident_start_voice(struct snd_trident * trident, unsigned int voice)
289 
290     Description: Start a voice, any channel 0 thru 63.
291                  This routine automatically handles the fact that there are
292                  more than 32 channels available.
293 
294     Parameters : voice - Voice number 0 thru n.
295                  trident - pointer to target device class for 4DWave.
296 
297     Return Value: None.
298 
299   ---------------------------------------------------------------------------*/
300 
301 void snd_trident_start_voice(struct snd_trident * trident, unsigned int voice)
302 {
303 	unsigned int mask = 1 << (voice & 0x1f);
304 	unsigned int reg = (voice & 0x20) ? T4D_START_B : T4D_START_A;
305 
306 	outl(mask, TRID_REG(trident, reg));
307 }
308 
309 EXPORT_SYMBOL(snd_trident_start_voice);
310 
311 /*---------------------------------------------------------------------------
312    void snd_trident_stop_voice(struct snd_trident * trident, unsigned int voice)
313 
314     Description: Stop a voice, any channel 0 thru 63.
315                  This routine automatically handles the fact that there are
316                  more than 32 channels available.
317 
318     Parameters : voice - Voice number 0 thru n.
319                  trident - pointer to target device class for 4DWave.
320 
321     Return Value: None.
322 
323   ---------------------------------------------------------------------------*/
324 
325 void snd_trident_stop_voice(struct snd_trident * trident, unsigned int voice)
326 {
327 	unsigned int mask = 1 << (voice & 0x1f);
328 	unsigned int reg = (voice & 0x20) ? T4D_STOP_B : T4D_STOP_A;
329 
330 	outl(mask, TRID_REG(trident, reg));
331 }
332 
333 EXPORT_SYMBOL(snd_trident_stop_voice);
334 
335 /*---------------------------------------------------------------------------
336     int snd_trident_allocate_pcm_channel(struct snd_trident *trident)
337 
338     Description: Allocate hardware channel in Bank B (32-63).
339 
340     Parameters :  trident - pointer to target device class for 4DWave.
341 
342     Return Value: hardware channel - 32-63 or -1 when no channel is available
343 
344   ---------------------------------------------------------------------------*/
345 
346 static int snd_trident_allocate_pcm_channel(struct snd_trident * trident)
347 {
348 	int idx;
349 
350 	if (trident->ChanPCMcnt >= trident->ChanPCM)
351 		return -1;
352 	for (idx = 31; idx >= 0; idx--) {
353 		if (!(trident->ChanMap[T4D_BANK_B] & (1 << idx))) {
354 			trident->ChanMap[T4D_BANK_B] |= 1 << idx;
355 			trident->ChanPCMcnt++;
356 			return idx + 32;
357 		}
358 	}
359 	return -1;
360 }
361 
362 /*---------------------------------------------------------------------------
363     void snd_trident_free_pcm_channel(int channel)
364 
365     Description: Free hardware channel in Bank B (32-63)
366 
367     Parameters :  trident - pointer to target device class for 4DWave.
368 	          channel - hardware channel number 0-63
369 
370     Return Value: none
371 
372   ---------------------------------------------------------------------------*/
373 
374 static void snd_trident_free_pcm_channel(struct snd_trident *trident, int channel)
375 {
376 	if (channel < 32 || channel > 63)
377 		return;
378 	channel &= 0x1f;
379 	if (trident->ChanMap[T4D_BANK_B] & (1 << channel)) {
380 		trident->ChanMap[T4D_BANK_B] &= ~(1 << channel);
381 		trident->ChanPCMcnt--;
382 	}
383 }
384 
385 /*---------------------------------------------------------------------------
386     unsigned int snd_trident_allocate_synth_channel(void)
387 
388     Description: Allocate hardware channel in Bank A (0-31).
389 
390     Parameters :  trident - pointer to target device class for 4DWave.
391 
392     Return Value: hardware channel - 0-31 or -1 when no channel is available
393 
394   ---------------------------------------------------------------------------*/
395 
396 static int snd_trident_allocate_synth_channel(struct snd_trident * trident)
397 {
398 	int idx;
399 
400 	for (idx = 31; idx >= 0; idx--) {
401 		if (!(trident->ChanMap[T4D_BANK_A] & (1 << idx))) {
402 			trident->ChanMap[T4D_BANK_A] |= 1 << idx;
403 			trident->synth.ChanSynthCount++;
404 			return idx;
405 		}
406 	}
407 	return -1;
408 }
409 
410 /*---------------------------------------------------------------------------
411     void snd_trident_free_synth_channel( int channel )
412 
413     Description: Free hardware channel in Bank B (0-31).
414 
415     Parameters :  trident - pointer to target device class for 4DWave.
416 	          channel - hardware channel number 0-63
417 
418     Return Value: none
419 
420   ---------------------------------------------------------------------------*/
421 
422 static void snd_trident_free_synth_channel(struct snd_trident *trident, int channel)
423 {
424 	if (channel < 0 || channel > 31)
425 		return;
426 	channel &= 0x1f;
427 	if (trident->ChanMap[T4D_BANK_A] & (1 << channel)) {
428 		trident->ChanMap[T4D_BANK_A] &= ~(1 << channel);
429 		trident->synth.ChanSynthCount--;
430 	}
431 }
432 
433 /*---------------------------------------------------------------------------
434    snd_trident_write_voice_regs
435 
436    Description: This routine will complete and write the 5 hardware channel
437                 registers to hardware.
438 
439    Parameters:  trident - pointer to target device class for 4DWave.
440                 voice - synthesizer voice structure
441                 Each register field.
442 
443   ---------------------------------------------------------------------------*/
444 
445 void snd_trident_write_voice_regs(struct snd_trident * trident,
446 				  struct snd_trident_voice * voice)
447 {
448 	unsigned int FmcRvolCvol;
449 	unsigned int regs[5];
450 
451 	regs[1] = voice->LBA;
452 	regs[4] = (voice->GVSel << 31) |
453 		  ((voice->Pan & 0x0000007f) << 24) |
454 		  ((voice->CTRL & 0x0000000f) << 12);
455 	FmcRvolCvol = ((voice->FMC & 3) << 14) |
456 	              ((voice->RVol & 0x7f) << 7) |
457 	              (voice->CVol & 0x7f);
458 
459 	switch (trident->device) {
460 	case TRIDENT_DEVICE_ID_SI7018:
461 		regs[4] |= voice->number > 31 ?
462 				(voice->Vol & 0x000003ff) :
463 				((voice->Vol & 0x00003fc) << (16-2)) |
464 				(voice->EC & 0x00000fff);
465 		regs[0] = (voice->CSO << 16) | ((voice->Alpha & 0x00000fff) << 4) |
466 			(voice->FMS & 0x0000000f);
467 		regs[2] = (voice->ESO << 16) | (voice->Delta & 0x0ffff);
468 		regs[3] = (voice->Attribute << 16) | FmcRvolCvol;
469 		break;
470 	case TRIDENT_DEVICE_ID_DX:
471 		regs[4] |= ((voice->Vol & 0x000003fc) << (16-2)) |
472 			   (voice->EC & 0x00000fff);
473 		regs[0] = (voice->CSO << 16) | ((voice->Alpha & 0x00000fff) << 4) |
474 			(voice->FMS & 0x0000000f);
475 		regs[2] = (voice->ESO << 16) | (voice->Delta & 0x0ffff);
476 		regs[3] = FmcRvolCvol;
477 		break;
478 	case TRIDENT_DEVICE_ID_NX:
479 		regs[4] |= ((voice->Vol & 0x000003fc) << (16-2)) |
480 			   (voice->EC & 0x00000fff);
481 		regs[0] = (voice->Delta << 24) | (voice->CSO & 0x00ffffff);
482 		regs[2] = ((voice->Delta << 16) & 0xff000000) |
483 			(voice->ESO & 0x00ffffff);
484 		regs[3] = (voice->Alpha << 20) |
485 			((voice->FMS & 0x0000000f) << 16) | FmcRvolCvol;
486 		break;
487 	default:
488 		snd_BUG();
489 		return;
490 	}
491 
492 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
493 	outl(regs[0], TRID_REG(trident, CH_START + 0));
494 	outl(regs[1], TRID_REG(trident, CH_START + 4));
495 	outl(regs[2], TRID_REG(trident, CH_START + 8));
496 	outl(regs[3], TRID_REG(trident, CH_START + 12));
497 	outl(regs[4], TRID_REG(trident, CH_START + 16));
498 
499 #if 0
500 	printk(KERN_DEBUG "written %i channel:\n", voice->number);
501 	printk(KERN_DEBUG "  regs[0] = 0x%x/0x%x\n",
502 	       regs[0], inl(TRID_REG(trident, CH_START + 0)));
503 	printk(KERN_DEBUG "  regs[1] = 0x%x/0x%x\n",
504 	       regs[1], inl(TRID_REG(trident, CH_START + 4)));
505 	printk(KERN_DEBUG "  regs[2] = 0x%x/0x%x\n",
506 	       regs[2], inl(TRID_REG(trident, CH_START + 8)));
507 	printk(KERN_DEBUG "  regs[3] = 0x%x/0x%x\n",
508 	       regs[3], inl(TRID_REG(trident, CH_START + 12)));
509 	printk(KERN_DEBUG "  regs[4] = 0x%x/0x%x\n",
510 	       regs[4], inl(TRID_REG(trident, CH_START + 16)));
511 #endif
512 }
513 
514 EXPORT_SYMBOL(snd_trident_write_voice_regs);
515 
516 /*---------------------------------------------------------------------------
517    snd_trident_write_cso_reg
518 
519    Description: This routine will write the new CSO offset
520                 register to hardware.
521 
522    Parameters:  trident - pointer to target device class for 4DWave.
523                 voice - synthesizer voice structure
524                 CSO - new CSO value
525 
526   ---------------------------------------------------------------------------*/
527 
528 static void snd_trident_write_cso_reg(struct snd_trident * trident,
529 				      struct snd_trident_voice * voice,
530 				      unsigned int CSO)
531 {
532 	voice->CSO = CSO;
533 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
534 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
535 		outw(voice->CSO, TRID_REG(trident, CH_DX_CSO_ALPHA_FMS) + 2);
536 	} else {
537 		outl((voice->Delta << 24) |
538 		     (voice->CSO & 0x00ffffff), TRID_REG(trident, CH_NX_DELTA_CSO));
539 	}
540 }
541 
542 /*---------------------------------------------------------------------------
543    snd_trident_write_eso_reg
544 
545    Description: This routine will write the new ESO offset
546                 register to hardware.
547 
548    Parameters:  trident - pointer to target device class for 4DWave.
549                 voice - synthesizer voice structure
550                 ESO - new ESO value
551 
552   ---------------------------------------------------------------------------*/
553 
554 static void snd_trident_write_eso_reg(struct snd_trident * trident,
555 				      struct snd_trident_voice * voice,
556 				      unsigned int ESO)
557 {
558 	voice->ESO = ESO;
559 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
560 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
561 		outw(voice->ESO, TRID_REG(trident, CH_DX_ESO_DELTA) + 2);
562 	} else {
563 		outl(((voice->Delta << 16) & 0xff000000) | (voice->ESO & 0x00ffffff),
564 		     TRID_REG(trident, CH_NX_DELTA_ESO));
565 	}
566 }
567 
568 /*---------------------------------------------------------------------------
569    snd_trident_write_vol_reg
570 
571    Description: This routine will write the new voice volume
572                 register to hardware.
573 
574    Parameters:  trident - pointer to target device class for 4DWave.
575                 voice - synthesizer voice structure
576                 Vol - new voice volume
577 
578   ---------------------------------------------------------------------------*/
579 
580 static void snd_trident_write_vol_reg(struct snd_trident * trident,
581 				      struct snd_trident_voice * voice,
582 				      unsigned int Vol)
583 {
584 	voice->Vol = Vol;
585 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
586 	switch (trident->device) {
587 	case TRIDENT_DEVICE_ID_DX:
588 	case TRIDENT_DEVICE_ID_NX:
589 		outb(voice->Vol >> 2, TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC + 2));
590 		break;
591 	case TRIDENT_DEVICE_ID_SI7018:
592 		/* printk(KERN_DEBUG "voice->Vol = 0x%x\n", voice->Vol); */
593 		outw((voice->CTRL << 12) | voice->Vol,
594 		     TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
595 		break;
596 	}
597 }
598 
599 /*---------------------------------------------------------------------------
600    snd_trident_write_pan_reg
601 
602    Description: This routine will write the new voice pan
603                 register to hardware.
604 
605    Parameters:  trident - pointer to target device class for 4DWave.
606                 voice - synthesizer voice structure
607                 Pan - new pan value
608 
609   ---------------------------------------------------------------------------*/
610 
611 static void snd_trident_write_pan_reg(struct snd_trident * trident,
612 				      struct snd_trident_voice * voice,
613 				      unsigned int Pan)
614 {
615 	voice->Pan = Pan;
616 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
617 	outb(((voice->GVSel & 0x01) << 7) | (voice->Pan & 0x7f),
618 	     TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC + 3));
619 }
620 
621 /*---------------------------------------------------------------------------
622    snd_trident_write_rvol_reg
623 
624    Description: This routine will write the new reverb volume
625                 register to hardware.
626 
627    Parameters:  trident - pointer to target device class for 4DWave.
628                 voice - synthesizer voice structure
629                 RVol - new reverb volume
630 
631   ---------------------------------------------------------------------------*/
632 
633 static void snd_trident_write_rvol_reg(struct snd_trident * trident,
634 				       struct snd_trident_voice * voice,
635 				       unsigned int RVol)
636 {
637 	voice->RVol = RVol;
638 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
639 	outw(((voice->FMC & 0x0003) << 14) | ((voice->RVol & 0x007f) << 7) |
640 	     (voice->CVol & 0x007f),
641 	     TRID_REG(trident, trident->device == TRIDENT_DEVICE_ID_NX ?
642 		      CH_NX_ALPHA_FMS_FMC_RVOL_CVOL : CH_DX_FMC_RVOL_CVOL));
643 }
644 
645 /*---------------------------------------------------------------------------
646    snd_trident_write_cvol_reg
647 
648    Description: This routine will write the new chorus volume
649                 register to hardware.
650 
651    Parameters:  trident - pointer to target device class for 4DWave.
652                 voice - synthesizer voice structure
653                 CVol - new chorus volume
654 
655   ---------------------------------------------------------------------------*/
656 
657 static void snd_trident_write_cvol_reg(struct snd_trident * trident,
658 				       struct snd_trident_voice * voice,
659 				       unsigned int CVol)
660 {
661 	voice->CVol = CVol;
662 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
663 	outw(((voice->FMC & 0x0003) << 14) | ((voice->RVol & 0x007f) << 7) |
664 	     (voice->CVol & 0x007f),
665 	     TRID_REG(trident, trident->device == TRIDENT_DEVICE_ID_NX ?
666 		      CH_NX_ALPHA_FMS_FMC_RVOL_CVOL : CH_DX_FMC_RVOL_CVOL));
667 }
668 
669 /*---------------------------------------------------------------------------
670    snd_trident_convert_rate
671 
672    Description: This routine converts rate in HZ to hardware delta value.
673 
674    Parameters:  trident - pointer to target device class for 4DWave.
675                 rate - Real or Virtual channel number.
676 
677    Returns:     Delta value.
678 
679   ---------------------------------------------------------------------------*/
680 static unsigned int snd_trident_convert_rate(unsigned int rate)
681 {
682 	unsigned int delta;
683 
684 	// We special case 44100 and 8000 since rounding with the equation
685 	// does not give us an accurate enough value. For 11025 and 22050
686 	// the equation gives us the best answer. All other frequencies will
687 	// also use the equation. JDW
688 	if (rate == 44100)
689 		delta = 0xeb3;
690 	else if (rate == 8000)
691 		delta = 0x2ab;
692 	else if (rate == 48000)
693 		delta = 0x1000;
694 	else
695 		delta = (((rate << 12) + 24000) / 48000) & 0x0000ffff;
696 	return delta;
697 }
698 
699 /*---------------------------------------------------------------------------
700    snd_trident_convert_adc_rate
701 
702    Description: This routine converts rate in HZ to hardware delta value.
703 
704    Parameters:  trident - pointer to target device class for 4DWave.
705                 rate - Real or Virtual channel number.
706 
707    Returns:     Delta value.
708 
709   ---------------------------------------------------------------------------*/
710 static unsigned int snd_trident_convert_adc_rate(unsigned int rate)
711 {
712 	unsigned int delta;
713 
714 	// We special case 44100 and 8000 since rounding with the equation
715 	// does not give us an accurate enough value. For 11025 and 22050
716 	// the equation gives us the best answer. All other frequencies will
717 	// also use the equation. JDW
718 	if (rate == 44100)
719 		delta = 0x116a;
720 	else if (rate == 8000)
721 		delta = 0x6000;
722 	else if (rate == 48000)
723 		delta = 0x1000;
724 	else
725 		delta = ((48000 << 12) / rate) & 0x0000ffff;
726 	return delta;
727 }
728 
729 /*---------------------------------------------------------------------------
730    snd_trident_spurious_threshold
731 
732    Description: This routine converts rate in HZ to spurious threshold.
733 
734    Parameters:  trident - pointer to target device class for 4DWave.
735                 rate - Real or Virtual channel number.
736 
737    Returns:     Delta value.
738 
739   ---------------------------------------------------------------------------*/
740 static unsigned int snd_trident_spurious_threshold(unsigned int rate,
741 						   unsigned int period_size)
742 {
743 	unsigned int res = (rate * period_size) / 48000;
744 	if (res < 64)
745 		res = res / 2;
746 	else
747 		res -= 32;
748 	return res;
749 }
750 
751 /*---------------------------------------------------------------------------
752    snd_trident_control_mode
753 
754    Description: This routine returns a control mode for a PCM channel.
755 
756    Parameters:  trident - pointer to target device class for 4DWave.
757                 substream  - PCM substream
758 
759    Returns:     Control value.
760 
761   ---------------------------------------------------------------------------*/
762 static unsigned int snd_trident_control_mode(struct snd_pcm_substream *substream)
763 {
764 	unsigned int CTRL;
765 	struct snd_pcm_runtime *runtime = substream->runtime;
766 
767 	/* set ctrl mode
768 	   CTRL default: 8-bit (unsigned) mono, loop mode enabled
769 	 */
770 	CTRL = 0x00000001;
771 	if (snd_pcm_format_width(runtime->format) == 16)
772 		CTRL |= 0x00000008;	// 16-bit data
773 	if (snd_pcm_format_signed(runtime->format))
774 		CTRL |= 0x00000002;	// signed data
775 	if (runtime->channels > 1)
776 		CTRL |= 0x00000004;	// stereo data
777 	return CTRL;
778 }
779 
780 /*
781  *  PCM part
782  */
783 
784 /*---------------------------------------------------------------------------
785    snd_trident_ioctl
786 
787    Description: Device I/O control handler for playback/capture parameters.
788 
789    Parameters:   substream  - PCM substream class
790                 cmd     - what ioctl message to process
791                 arg     - additional message infoarg
792 
793    Returns:     Error status
794 
795   ---------------------------------------------------------------------------*/
796 
797 static int snd_trident_ioctl(struct snd_pcm_substream *substream,
798 			     unsigned int cmd,
799 			     void *arg)
800 {
801 	/* FIXME: it seems that with small periods the behaviour of
802 	          trident hardware is unpredictable and interrupt generator
803 	          is broken */
804 	return snd_pcm_lib_ioctl(substream, cmd, arg);
805 }
806 
807 /*---------------------------------------------------------------------------
808    snd_trident_allocate_pcm_mem
809 
810    Description: Allocate PCM ring buffer for given substream
811 
812    Parameters:  substream  - PCM substream class
813 		hw_params  - hardware parameters
814 
815    Returns:     Error status
816 
817   ---------------------------------------------------------------------------*/
818 
819 static int snd_trident_allocate_pcm_mem(struct snd_pcm_substream *substream,
820 					struct snd_pcm_hw_params *hw_params)
821 {
822 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
823 	struct snd_pcm_runtime *runtime = substream->runtime;
824 	struct snd_trident_voice *voice = runtime->private_data;
825 	int err;
826 
827 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
828 		return err;
829 	if (trident->tlb.entries) {
830 		if (err > 0) { /* change */
831 			if (voice->memblk)
832 				snd_trident_free_pages(trident, voice->memblk);
833 			voice->memblk = snd_trident_alloc_pages(trident, substream);
834 			if (voice->memblk == NULL)
835 				return -ENOMEM;
836 		}
837 	}
838 	return 0;
839 }
840 
841 /*---------------------------------------------------------------------------
842    snd_trident_allocate_evoice
843 
844    Description: Allocate extra voice as interrupt generator
845 
846    Parameters:  substream  - PCM substream class
847 		hw_params  - hardware parameters
848 
849    Returns:     Error status
850 
851   ---------------------------------------------------------------------------*/
852 
853 static int snd_trident_allocate_evoice(struct snd_pcm_substream *substream,
854 				       struct snd_pcm_hw_params *hw_params)
855 {
856 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
857 	struct snd_pcm_runtime *runtime = substream->runtime;
858 	struct snd_trident_voice *voice = runtime->private_data;
859 	struct snd_trident_voice *evoice = voice->extra;
860 
861 	/* voice management */
862 
863 	if (params_buffer_size(hw_params) / 2 != params_period_size(hw_params)) {
864 		if (evoice == NULL) {
865 			evoice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
866 			if (evoice == NULL)
867 				return -ENOMEM;
868 			voice->extra = evoice;
869 			evoice->substream = substream;
870 		}
871 	} else {
872 		if (evoice != NULL) {
873 			snd_trident_free_voice(trident, evoice);
874 			voice->extra = evoice = NULL;
875 		}
876 	}
877 
878 	return 0;
879 }
880 
881 /*---------------------------------------------------------------------------
882    snd_trident_hw_params
883 
884    Description: Set the hardware parameters for the playback device.
885 
886    Parameters:  substream  - PCM substream class
887 		hw_params  - hardware parameters
888 
889    Returns:     Error status
890 
891   ---------------------------------------------------------------------------*/
892 
893 static int snd_trident_hw_params(struct snd_pcm_substream *substream,
894 				 struct snd_pcm_hw_params *hw_params)
895 {
896 	int err;
897 
898 	err = snd_trident_allocate_pcm_mem(substream, hw_params);
899 	if (err >= 0)
900 		err = snd_trident_allocate_evoice(substream, hw_params);
901 	return err;
902 }
903 
904 /*---------------------------------------------------------------------------
905    snd_trident_playback_hw_free
906 
907    Description: Release the hardware resources for the playback device.
908 
909    Parameters:  substream  - PCM substream class
910 
911    Returns:     Error status
912 
913   ---------------------------------------------------------------------------*/
914 
915 static int snd_trident_hw_free(struct snd_pcm_substream *substream)
916 {
917 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
918 	struct snd_pcm_runtime *runtime = substream->runtime;
919 	struct snd_trident_voice *voice = runtime->private_data;
920 	struct snd_trident_voice *evoice = voice ? voice->extra : NULL;
921 
922 	if (trident->tlb.entries) {
923 		if (voice && voice->memblk) {
924 			snd_trident_free_pages(trident, voice->memblk);
925 			voice->memblk = NULL;
926 		}
927 	}
928 	snd_pcm_lib_free_pages(substream);
929 	if (evoice != NULL) {
930 		snd_trident_free_voice(trident, evoice);
931 		voice->extra = NULL;
932 	}
933 	return 0;
934 }
935 
936 /*---------------------------------------------------------------------------
937    snd_trident_playback_prepare
938 
939    Description: Prepare playback device for playback.
940 
941    Parameters:  substream  - PCM substream class
942 
943    Returns:     Error status
944 
945   ---------------------------------------------------------------------------*/
946 
947 static int snd_trident_playback_prepare(struct snd_pcm_substream *substream)
948 {
949 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
950 	struct snd_pcm_runtime *runtime = substream->runtime;
951 	struct snd_trident_voice *voice = runtime->private_data;
952 	struct snd_trident_voice *evoice = voice->extra;
953 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[substream->number];
954 
955 	spin_lock_irq(&trident->reg_lock);
956 
957 	/* set delta (rate) value */
958 	voice->Delta = snd_trident_convert_rate(runtime->rate);
959 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
960 
961 	/* set Loop Begin Address */
962 	if (voice->memblk)
963 		voice->LBA = voice->memblk->offset;
964 	else
965 		voice->LBA = runtime->dma_addr;
966 
967 	voice->CSO = 0;
968 	voice->ESO = runtime->buffer_size - 1;	/* in samples */
969 	voice->CTRL = snd_trident_control_mode(substream);
970 	voice->FMC = 3;
971 	voice->GVSel = 1;
972 	voice->EC = 0;
973 	voice->Alpha = 0;
974 	voice->FMS = 0;
975 	voice->Vol = mix->vol;
976 	voice->RVol = mix->rvol;
977 	voice->CVol = mix->cvol;
978 	voice->Pan = mix->pan;
979 	voice->Attribute = 0;
980 #if 0
981 	voice->Attribute = (1<<(30-16))|(2<<(26-16))|
982 			   (0<<(24-16))|(0x1f<<(19-16));
983 #else
984 	voice->Attribute = 0;
985 #endif
986 
987 	snd_trident_write_voice_regs(trident, voice);
988 
989 	if (evoice != NULL) {
990 		evoice->Delta = voice->Delta;
991 		evoice->spurious_threshold = voice->spurious_threshold;
992 		evoice->LBA = voice->LBA;
993 		evoice->CSO = 0;
994 		evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
995 		evoice->CTRL = voice->CTRL;
996 		evoice->FMC = 3;
997 		evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
998 		evoice->EC = 0;
999 		evoice->Alpha = 0;
1000 		evoice->FMS = 0;
1001 		evoice->Vol = 0x3ff;			/* mute */
1002 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1003 		evoice->Pan = 0x7f;			/* mute */
1004 #if 0
1005 		evoice->Attribute = (1<<(30-16))|(2<<(26-16))|
1006 				    (0<<(24-16))|(0x1f<<(19-16));
1007 #else
1008 		evoice->Attribute = 0;
1009 #endif
1010 		snd_trident_write_voice_regs(trident, evoice);
1011 		evoice->isync2 = 1;
1012 		evoice->isync_mark = runtime->period_size;
1013 		evoice->ESO = (runtime->period_size * 2) - 1;
1014 	}
1015 
1016 	spin_unlock_irq(&trident->reg_lock);
1017 
1018 	return 0;
1019 }
1020 
1021 /*---------------------------------------------------------------------------
1022    snd_trident_capture_hw_params
1023 
1024    Description: Set the hardware parameters for the capture device.
1025 
1026    Parameters:  substream  - PCM substream class
1027 		hw_params  - hardware parameters
1028 
1029    Returns:     Error status
1030 
1031   ---------------------------------------------------------------------------*/
1032 
1033 static int snd_trident_capture_hw_params(struct snd_pcm_substream *substream,
1034 					 struct snd_pcm_hw_params *hw_params)
1035 {
1036 	return snd_trident_allocate_pcm_mem(substream, hw_params);
1037 }
1038 
1039 /*---------------------------------------------------------------------------
1040    snd_trident_capture_prepare
1041 
1042    Description: Prepare capture device for playback.
1043 
1044    Parameters:  substream  - PCM substream class
1045 
1046    Returns:     Error status
1047 
1048   ---------------------------------------------------------------------------*/
1049 
1050 static int snd_trident_capture_prepare(struct snd_pcm_substream *substream)
1051 {
1052 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1053 	struct snd_pcm_runtime *runtime = substream->runtime;
1054 	struct snd_trident_voice *voice = runtime->private_data;
1055 	unsigned int val, ESO_bytes;
1056 
1057 	spin_lock_irq(&trident->reg_lock);
1058 
1059 	// Initialize the channel and set channel Mode
1060 	outb(0, TRID_REG(trident, LEGACY_DMAR15));
1061 
1062 	// Set DMA channel operation mode register
1063 	outb(0x54, TRID_REG(trident, LEGACY_DMAR11));
1064 
1065 	// Set channel buffer Address, DMAR0 expects contiguous PCI memory area
1066 	voice->LBA = runtime->dma_addr;
1067 	outl(voice->LBA, TRID_REG(trident, LEGACY_DMAR0));
1068 	if (voice->memblk)
1069 		voice->LBA = voice->memblk->offset;
1070 
1071 	// set ESO
1072 	ESO_bytes = snd_pcm_lib_buffer_bytes(substream) - 1;
1073 	outb((ESO_bytes & 0x00ff0000) >> 16, TRID_REG(trident, LEGACY_DMAR6));
1074 	outw((ESO_bytes & 0x0000ffff), TRID_REG(trident, LEGACY_DMAR4));
1075 	ESO_bytes++;
1076 
1077 	// Set channel sample rate, 4.12 format
1078 	val = (((unsigned int) 48000L << 12) + (runtime->rate/2)) / runtime->rate;
1079 	outw(val, TRID_REG(trident, T4D_SBDELTA_DELTA_R));
1080 
1081 	// Set channel interrupt blk length
1082 	if (snd_pcm_format_width(runtime->format) == 16) {
1083 		val = (unsigned short) ((ESO_bytes >> 1) - 1);
1084 	} else {
1085 		val = (unsigned short) (ESO_bytes - 1);
1086 	}
1087 
1088 	outl((val << 16) | val, TRID_REG(trident, T4D_SBBL_SBCL));
1089 
1090 	// Right now, set format and start to run captureing,
1091 	// continuous run loop enable.
1092 	trident->bDMAStart = 0x19;	// 0001 1001b
1093 
1094 	if (snd_pcm_format_width(runtime->format) == 16)
1095 		trident->bDMAStart |= 0x80;
1096 	if (snd_pcm_format_signed(runtime->format))
1097 		trident->bDMAStart |= 0x20;
1098 	if (runtime->channels > 1)
1099 		trident->bDMAStart |= 0x40;
1100 
1101 	// Prepare capture intr channel
1102 
1103 	voice->Delta = snd_trident_convert_rate(runtime->rate);
1104 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1105 	voice->isync = 1;
1106 	voice->isync_mark = runtime->period_size;
1107 	voice->isync_max = runtime->buffer_size;
1108 
1109 	// Set voice parameters
1110 	voice->CSO = 0;
1111 	voice->ESO = voice->isync_ESO = (runtime->period_size * 2) + 6 - 1;
1112 	voice->CTRL = snd_trident_control_mode(substream);
1113 	voice->FMC = 3;
1114 	voice->RVol = 0x7f;
1115 	voice->CVol = 0x7f;
1116 	voice->GVSel = 1;
1117 	voice->Pan = 0x7f;		/* mute */
1118 	voice->Vol = 0x3ff;		/* mute */
1119 	voice->EC = 0;
1120 	voice->Alpha = 0;
1121 	voice->FMS = 0;
1122 	voice->Attribute = 0;
1123 
1124 	snd_trident_write_voice_regs(trident, voice);
1125 
1126 	spin_unlock_irq(&trident->reg_lock);
1127 	return 0;
1128 }
1129 
1130 /*---------------------------------------------------------------------------
1131    snd_trident_si7018_capture_hw_params
1132 
1133    Description: Set the hardware parameters for the capture device.
1134 
1135    Parameters:  substream  - PCM substream class
1136 		hw_params  - hardware parameters
1137 
1138    Returns:     Error status
1139 
1140   ---------------------------------------------------------------------------*/
1141 
1142 static int snd_trident_si7018_capture_hw_params(struct snd_pcm_substream *substream,
1143 						struct snd_pcm_hw_params *hw_params)
1144 {
1145 	int err;
1146 
1147 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
1148 		return err;
1149 
1150 	return snd_trident_allocate_evoice(substream, hw_params);
1151 }
1152 
1153 /*---------------------------------------------------------------------------
1154    snd_trident_si7018_capture_hw_free
1155 
1156    Description: Release the hardware resources for the capture device.
1157 
1158    Parameters:  substream  - PCM substream class
1159 
1160    Returns:     Error status
1161 
1162   ---------------------------------------------------------------------------*/
1163 
1164 static int snd_trident_si7018_capture_hw_free(struct snd_pcm_substream *substream)
1165 {
1166 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1167 	struct snd_pcm_runtime *runtime = substream->runtime;
1168 	struct snd_trident_voice *voice = runtime->private_data;
1169 	struct snd_trident_voice *evoice = voice ? voice->extra : NULL;
1170 
1171 	snd_pcm_lib_free_pages(substream);
1172 	if (evoice != NULL) {
1173 		snd_trident_free_voice(trident, evoice);
1174 		voice->extra = NULL;
1175 	}
1176 	return 0;
1177 }
1178 
1179 /*---------------------------------------------------------------------------
1180    snd_trident_si7018_capture_prepare
1181 
1182    Description: Prepare capture device for playback.
1183 
1184    Parameters:  substream  - PCM substream class
1185 
1186    Returns:     Error status
1187 
1188   ---------------------------------------------------------------------------*/
1189 
1190 static int snd_trident_si7018_capture_prepare(struct snd_pcm_substream *substream)
1191 {
1192 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1193 	struct snd_pcm_runtime *runtime = substream->runtime;
1194 	struct snd_trident_voice *voice = runtime->private_data;
1195 	struct snd_trident_voice *evoice = voice->extra;
1196 
1197 	spin_lock_irq(&trident->reg_lock);
1198 
1199 	voice->LBA = runtime->dma_addr;
1200 	voice->Delta = snd_trident_convert_adc_rate(runtime->rate);
1201 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1202 
1203 	// Set voice parameters
1204 	voice->CSO = 0;
1205 	voice->ESO = runtime->buffer_size - 1;		/* in samples */
1206 	voice->CTRL = snd_trident_control_mode(substream);
1207 	voice->FMC = 0;
1208 	voice->RVol = 0;
1209 	voice->CVol = 0;
1210 	voice->GVSel = 1;
1211 	voice->Pan = T4D_DEFAULT_PCM_PAN;
1212 	voice->Vol = 0;
1213 	voice->EC = 0;
1214 	voice->Alpha = 0;
1215 	voice->FMS = 0;
1216 
1217 	voice->Attribute = (2 << (30-16)) |
1218 			   (2 << (26-16)) |
1219 			   (2 << (24-16)) |
1220 			   (1 << (23-16));
1221 
1222 	snd_trident_write_voice_regs(trident, voice);
1223 
1224 	if (evoice != NULL) {
1225 		evoice->Delta = snd_trident_convert_rate(runtime->rate);
1226 		evoice->spurious_threshold = voice->spurious_threshold;
1227 		evoice->LBA = voice->LBA;
1228 		evoice->CSO = 0;
1229 		evoice->ESO = (runtime->period_size * 2) + 20 - 1; /* in samples, 20 means correction */
1230 		evoice->CTRL = voice->CTRL;
1231 		evoice->FMC = 3;
1232 		evoice->GVSel = 0;
1233 		evoice->EC = 0;
1234 		evoice->Alpha = 0;
1235 		evoice->FMS = 0;
1236 		evoice->Vol = 0x3ff;			/* mute */
1237 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1238 		evoice->Pan = 0x7f;			/* mute */
1239 		evoice->Attribute = 0;
1240 		snd_trident_write_voice_regs(trident, evoice);
1241 		evoice->isync2 = 1;
1242 		evoice->isync_mark = runtime->period_size;
1243 		evoice->ESO = (runtime->period_size * 2) - 1;
1244 	}
1245 
1246 	spin_unlock_irq(&trident->reg_lock);
1247 	return 0;
1248 }
1249 
1250 /*---------------------------------------------------------------------------
1251    snd_trident_foldback_prepare
1252 
1253    Description: Prepare foldback capture device for playback.
1254 
1255    Parameters:  substream  - PCM substream class
1256 
1257    Returns:     Error status
1258 
1259   ---------------------------------------------------------------------------*/
1260 
1261 static int snd_trident_foldback_prepare(struct snd_pcm_substream *substream)
1262 {
1263 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1264 	struct snd_pcm_runtime *runtime = substream->runtime;
1265 	struct snd_trident_voice *voice = runtime->private_data;
1266 	struct snd_trident_voice *evoice = voice->extra;
1267 
1268 	spin_lock_irq(&trident->reg_lock);
1269 
1270 	/* Set channel buffer Address */
1271 	if (voice->memblk)
1272 		voice->LBA = voice->memblk->offset;
1273 	else
1274 		voice->LBA = runtime->dma_addr;
1275 
1276 	/* set target ESO for channel */
1277 	voice->ESO = runtime->buffer_size - 1;	/* in samples */
1278 
1279 	/* set sample rate */
1280 	voice->Delta = 0x1000;
1281 	voice->spurious_threshold = snd_trident_spurious_threshold(48000, runtime->period_size);
1282 
1283 	voice->CSO = 0;
1284 	voice->CTRL = snd_trident_control_mode(substream);
1285 	voice->FMC = 3;
1286 	voice->RVol = 0x7f;
1287 	voice->CVol = 0x7f;
1288 	voice->GVSel = 1;
1289 	voice->Pan = 0x7f;	/* mute */
1290 	voice->Vol = 0x3ff;	/* mute */
1291 	voice->EC = 0;
1292 	voice->Alpha = 0;
1293 	voice->FMS = 0;
1294 	voice->Attribute = 0;
1295 
1296 	/* set up capture channel */
1297 	outb(((voice->number & 0x3f) | 0x80), TRID_REG(trident, T4D_RCI + voice->foldback_chan));
1298 
1299 	snd_trident_write_voice_regs(trident, voice);
1300 
1301 	if (evoice != NULL) {
1302 		evoice->Delta = voice->Delta;
1303 		evoice->spurious_threshold = voice->spurious_threshold;
1304 		evoice->LBA = voice->LBA;
1305 		evoice->CSO = 0;
1306 		evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
1307 		evoice->CTRL = voice->CTRL;
1308 		evoice->FMC = 3;
1309 		evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
1310 		evoice->EC = 0;
1311 		evoice->Alpha = 0;
1312 		evoice->FMS = 0;
1313 		evoice->Vol = 0x3ff;			/* mute */
1314 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1315 		evoice->Pan = 0x7f;			/* mute */
1316 		evoice->Attribute = 0;
1317 		snd_trident_write_voice_regs(trident, evoice);
1318 		evoice->isync2 = 1;
1319 		evoice->isync_mark = runtime->period_size;
1320 		evoice->ESO = (runtime->period_size * 2) - 1;
1321 	}
1322 
1323 	spin_unlock_irq(&trident->reg_lock);
1324 	return 0;
1325 }
1326 
1327 /*---------------------------------------------------------------------------
1328    snd_trident_spdif_hw_params
1329 
1330    Description: Set the hardware parameters for the spdif device.
1331 
1332    Parameters:  substream  - PCM substream class
1333 		hw_params  - hardware parameters
1334 
1335    Returns:     Error status
1336 
1337   ---------------------------------------------------------------------------*/
1338 
1339 static int snd_trident_spdif_hw_params(struct snd_pcm_substream *substream,
1340 				       struct snd_pcm_hw_params *hw_params)
1341 {
1342 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1343 	unsigned int old_bits = 0, change = 0;
1344 	int err;
1345 
1346 	err = snd_trident_allocate_pcm_mem(substream, hw_params);
1347 	if (err < 0)
1348 		return err;
1349 
1350 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
1351 		err = snd_trident_allocate_evoice(substream, hw_params);
1352 		if (err < 0)
1353 			return err;
1354 	}
1355 
1356 	/* prepare SPDIF channel */
1357 	spin_lock_irq(&trident->reg_lock);
1358 	old_bits = trident->spdif_pcm_bits;
1359 	if (old_bits & IEC958_AES0_PROFESSIONAL)
1360 		trident->spdif_pcm_bits &= ~IEC958_AES0_PRO_FS;
1361 	else
1362 		trident->spdif_pcm_bits &= ~(IEC958_AES3_CON_FS << 24);
1363 	if (params_rate(hw_params) >= 48000) {
1364 		trident->spdif_pcm_ctrl = 0x3c;	// 48000 Hz
1365 		trident->spdif_pcm_bits |=
1366 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1367 				IEC958_AES0_PRO_FS_48000 :
1368 				(IEC958_AES3_CON_FS_48000 << 24);
1369 	}
1370 	else if (params_rate(hw_params) >= 44100) {
1371 		trident->spdif_pcm_ctrl = 0x3e;	// 44100 Hz
1372 		trident->spdif_pcm_bits |=
1373 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1374 				IEC958_AES0_PRO_FS_44100 :
1375 				(IEC958_AES3_CON_FS_44100 << 24);
1376 	}
1377 	else {
1378 		trident->spdif_pcm_ctrl = 0x3d;	// 32000 Hz
1379 		trident->spdif_pcm_bits |=
1380 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1381 				IEC958_AES0_PRO_FS_32000 :
1382 				(IEC958_AES3_CON_FS_32000 << 24);
1383 	}
1384 	change = old_bits != trident->spdif_pcm_bits;
1385 	spin_unlock_irq(&trident->reg_lock);
1386 
1387 	if (change)
1388 		snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE, &trident->spdif_pcm_ctl->id);
1389 
1390 	return 0;
1391 }
1392 
1393 /*---------------------------------------------------------------------------
1394    snd_trident_spdif_prepare
1395 
1396    Description: Prepare SPDIF device for playback.
1397 
1398    Parameters:  substream  - PCM substream class
1399 
1400    Returns:     Error status
1401 
1402   ---------------------------------------------------------------------------*/
1403 
1404 static int snd_trident_spdif_prepare(struct snd_pcm_substream *substream)
1405 {
1406 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1407 	struct snd_pcm_runtime *runtime = substream->runtime;
1408 	struct snd_trident_voice *voice = runtime->private_data;
1409 	struct snd_trident_voice *evoice = voice->extra;
1410 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[substream->number];
1411 	unsigned int RESO, LBAO;
1412 	unsigned int temp;
1413 
1414 	spin_lock_irq(&trident->reg_lock);
1415 
1416 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1417 
1418 		/* set delta (rate) value */
1419 		voice->Delta = snd_trident_convert_rate(runtime->rate);
1420 		voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1421 
1422 		/* set Loop Back Address */
1423 		LBAO = runtime->dma_addr;
1424 		if (voice->memblk)
1425 			voice->LBA = voice->memblk->offset;
1426 		else
1427 			voice->LBA = LBAO;
1428 
1429 		voice->isync = 1;
1430 		voice->isync3 = 1;
1431 		voice->isync_mark = runtime->period_size;
1432 		voice->isync_max = runtime->buffer_size;
1433 
1434 		/* set target ESO for channel */
1435 		RESO = runtime->buffer_size - 1;
1436 		voice->ESO = voice->isync_ESO = (runtime->period_size * 2) + 6 - 1;
1437 
1438 		/* set ctrl mode */
1439 		voice->CTRL = snd_trident_control_mode(substream);
1440 
1441 		voice->FMC = 3;
1442 		voice->RVol = 0x7f;
1443 		voice->CVol = 0x7f;
1444 		voice->GVSel = 1;
1445 		voice->Pan = 0x7f;
1446 		voice->Vol = 0x3ff;
1447 		voice->EC = 0;
1448 		voice->CSO = 0;
1449 		voice->Alpha = 0;
1450 		voice->FMS = 0;
1451 		voice->Attribute = 0;
1452 
1453 		/* prepare surrogate IRQ channel */
1454 		snd_trident_write_voice_regs(trident, voice);
1455 
1456 		outw((RESO & 0xffff), TRID_REG(trident, NX_SPESO));
1457 		outb((RESO >> 16), TRID_REG(trident, NX_SPESO + 2));
1458 		outl((LBAO & 0xfffffffc), TRID_REG(trident, NX_SPLBA));
1459 		outw((voice->CSO & 0xffff), TRID_REG(trident, NX_SPCTRL_SPCSO));
1460 		outb((voice->CSO >> 16), TRID_REG(trident, NX_SPCTRL_SPCSO + 2));
1461 
1462 		/* set SPDIF setting */
1463 		outb(trident->spdif_pcm_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1464 		outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
1465 
1466 	} else {	/* SiS */
1467 
1468 		/* set delta (rate) value */
1469 		voice->Delta = 0x800;
1470 		voice->spurious_threshold = snd_trident_spurious_threshold(48000, runtime->period_size);
1471 
1472 		/* set Loop Begin Address */
1473 		if (voice->memblk)
1474 			voice->LBA = voice->memblk->offset;
1475 		else
1476 			voice->LBA = runtime->dma_addr;
1477 
1478 		voice->CSO = 0;
1479 		voice->ESO = runtime->buffer_size - 1;	/* in samples */
1480 		voice->CTRL = snd_trident_control_mode(substream);
1481 		voice->FMC = 3;
1482 		voice->GVSel = 1;
1483 		voice->EC = 0;
1484 		voice->Alpha = 0;
1485 		voice->FMS = 0;
1486 		voice->Vol = mix->vol;
1487 		voice->RVol = mix->rvol;
1488 		voice->CVol = mix->cvol;
1489 		voice->Pan = mix->pan;
1490 		voice->Attribute = (1<<(30-16))|(7<<(26-16))|
1491 				   (0<<(24-16))|(0<<(19-16));
1492 
1493 		snd_trident_write_voice_regs(trident, voice);
1494 
1495 		if (evoice != NULL) {
1496 			evoice->Delta = voice->Delta;
1497 			evoice->spurious_threshold = voice->spurious_threshold;
1498 			evoice->LBA = voice->LBA;
1499 			evoice->CSO = 0;
1500 			evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
1501 			evoice->CTRL = voice->CTRL;
1502 			evoice->FMC = 3;
1503 			evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
1504 			evoice->EC = 0;
1505 			evoice->Alpha = 0;
1506 			evoice->FMS = 0;
1507 			evoice->Vol = 0x3ff;			/* mute */
1508 			evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1509 			evoice->Pan = 0x7f;			/* mute */
1510 			evoice->Attribute = 0;
1511 			snd_trident_write_voice_regs(trident, evoice);
1512 			evoice->isync2 = 1;
1513 			evoice->isync_mark = runtime->period_size;
1514 			evoice->ESO = (runtime->period_size * 2) - 1;
1515 		}
1516 
1517 		outl(trident->spdif_pcm_bits, TRID_REG(trident, SI_SPDIF_CS));
1518 		temp = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
1519 		temp &= ~(1<<19);
1520 		outl(temp, TRID_REG(trident, T4D_LFO_GC_CIR));
1521 		temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1522 		temp |= SPDIF_EN;
1523 		outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1524 	}
1525 
1526 	spin_unlock_irq(&trident->reg_lock);
1527 
1528 	return 0;
1529 }
1530 
1531 /*---------------------------------------------------------------------------
1532    snd_trident_trigger
1533 
1534    Description: Start/stop devices
1535 
1536    Parameters:  substream  - PCM substream class
1537    		cmd	- trigger command (STOP, GO)
1538 
1539    Returns:     Error status
1540 
1541   ---------------------------------------------------------------------------*/
1542 
1543 static int snd_trident_trigger(struct snd_pcm_substream *substream,
1544 			       int cmd)
1545 
1546 {
1547 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1548 	struct snd_pcm_substream *s;
1549 	unsigned int what, whati, capture_flag, spdif_flag;
1550 	struct snd_trident_voice *voice, *evoice;
1551 	unsigned int val, go;
1552 
1553 	switch (cmd) {
1554 	case SNDRV_PCM_TRIGGER_START:
1555 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1556 	case SNDRV_PCM_TRIGGER_RESUME:
1557 		go = 1;
1558 		break;
1559 	case SNDRV_PCM_TRIGGER_STOP:
1560 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1561 	case SNDRV_PCM_TRIGGER_SUSPEND:
1562 		go = 0;
1563 		break;
1564 	default:
1565 		return -EINVAL;
1566 	}
1567 	what = whati = capture_flag = spdif_flag = 0;
1568 	spin_lock(&trident->reg_lock);
1569 	val = inl(TRID_REG(trident, T4D_STIMER)) & 0x00ffffff;
1570 	snd_pcm_group_for_each_entry(s, substream) {
1571 		if ((struct snd_trident *) snd_pcm_substream_chip(s) == trident) {
1572 			voice = s->runtime->private_data;
1573 			evoice = voice->extra;
1574 			what |= 1 << (voice->number & 0x1f);
1575 			if (evoice == NULL) {
1576 				whati |= 1 << (voice->number & 0x1f);
1577 			} else {
1578 				what |= 1 << (evoice->number & 0x1f);
1579 				whati |= 1 << (evoice->number & 0x1f);
1580 				if (go)
1581 					evoice->stimer = val;
1582 			}
1583 			if (go) {
1584 				voice->running = 1;
1585 				voice->stimer = val;
1586 			} else {
1587 				voice->running = 0;
1588 			}
1589 			snd_pcm_trigger_done(s, substream);
1590 			if (voice->capture)
1591 				capture_flag = 1;
1592 			if (voice->spdif)
1593 				spdif_flag = 1;
1594 		}
1595 	}
1596 	if (spdif_flag) {
1597 		if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1598 			outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
1599 			val = trident->spdif_pcm_ctrl;
1600 			if (!go)
1601 				val &= ~(0x28);
1602 			outb(val, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1603 		} else {
1604 			outl(trident->spdif_pcm_bits, TRID_REG(trident, SI_SPDIF_CS));
1605 			val = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) | SPDIF_EN;
1606 			outl(val, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1607 		}
1608 	}
1609 	if (!go)
1610 		outl(what, TRID_REG(trident, T4D_STOP_B));
1611 	val = inl(TRID_REG(trident, T4D_AINTEN_B));
1612 	if (go) {
1613 		val |= whati;
1614 	} else {
1615 		val &= ~whati;
1616 	}
1617 	outl(val, TRID_REG(trident, T4D_AINTEN_B));
1618 	if (go) {
1619 		outl(what, TRID_REG(trident, T4D_START_B));
1620 
1621 		if (capture_flag && trident->device != TRIDENT_DEVICE_ID_SI7018)
1622 			outb(trident->bDMAStart, TRID_REG(trident, T4D_SBCTRL_SBE2R_SBDD));
1623 	} else {
1624 		if (capture_flag && trident->device != TRIDENT_DEVICE_ID_SI7018)
1625 			outb(0x00, TRID_REG(trident, T4D_SBCTRL_SBE2R_SBDD));
1626 	}
1627 	spin_unlock(&trident->reg_lock);
1628 	return 0;
1629 }
1630 
1631 /*---------------------------------------------------------------------------
1632    snd_trident_playback_pointer
1633 
1634    Description: This routine return the playback position
1635 
1636    Parameters:	substream  - PCM substream class
1637 
1638    Returns:     position of buffer
1639 
1640   ---------------------------------------------------------------------------*/
1641 
1642 static snd_pcm_uframes_t snd_trident_playback_pointer(struct snd_pcm_substream *substream)
1643 {
1644 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1645 	struct snd_pcm_runtime *runtime = substream->runtime;
1646 	struct snd_trident_voice *voice = runtime->private_data;
1647 	unsigned int cso;
1648 
1649 	if (!voice->running)
1650 		return 0;
1651 
1652 	spin_lock(&trident->reg_lock);
1653 
1654 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
1655 
1656 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
1657 		cso = inw(TRID_REG(trident, CH_DX_CSO_ALPHA_FMS + 2));
1658 	} else {		// ID_4DWAVE_NX
1659 		cso = (unsigned int) inl(TRID_REG(trident, CH_NX_DELTA_CSO)) & 0x00ffffff;
1660 	}
1661 
1662 	spin_unlock(&trident->reg_lock);
1663 
1664 	if (cso >= runtime->buffer_size)
1665 		cso = 0;
1666 
1667 	return cso;
1668 }
1669 
1670 /*---------------------------------------------------------------------------
1671    snd_trident_capture_pointer
1672 
1673    Description: This routine return the capture position
1674 
1675    Parameters:   pcm1    - PCM device class
1676 
1677    Returns:     position of buffer
1678 
1679   ---------------------------------------------------------------------------*/
1680 
1681 static snd_pcm_uframes_t snd_trident_capture_pointer(struct snd_pcm_substream *substream)
1682 {
1683 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1684 	struct snd_pcm_runtime *runtime = substream->runtime;
1685 	struct snd_trident_voice *voice = runtime->private_data;
1686 	unsigned int result;
1687 
1688 	if (!voice->running)
1689 		return 0;
1690 
1691 	result = inw(TRID_REG(trident, T4D_SBBL_SBCL));
1692 	if (runtime->channels > 1)
1693 		result >>= 1;
1694 	if (result > 0)
1695 		result = runtime->buffer_size - result;
1696 
1697 	return result;
1698 }
1699 
1700 /*---------------------------------------------------------------------------
1701    snd_trident_spdif_pointer
1702 
1703    Description: This routine return the SPDIF playback position
1704 
1705    Parameters:	substream  - PCM substream class
1706 
1707    Returns:     position of buffer
1708 
1709   ---------------------------------------------------------------------------*/
1710 
1711 static snd_pcm_uframes_t snd_trident_spdif_pointer(struct snd_pcm_substream *substream)
1712 {
1713 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1714 	struct snd_pcm_runtime *runtime = substream->runtime;
1715 	struct snd_trident_voice *voice = runtime->private_data;
1716 	unsigned int result;
1717 
1718 	if (!voice->running)
1719 		return 0;
1720 
1721 	result = inl(TRID_REG(trident, NX_SPCTRL_SPCSO)) & 0x00ffffff;
1722 
1723 	return result;
1724 }
1725 
1726 /*
1727  *  Playback support device description
1728  */
1729 
1730 static struct snd_pcm_hardware snd_trident_playback =
1731 {
1732 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1733 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1734 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1735 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1736 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1737 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1738 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1739 	.rate_min =		4000,
1740 	.rate_max =		48000,
1741 	.channels_min =		1,
1742 	.channels_max =		2,
1743 	.buffer_bytes_max =	(256*1024),
1744 	.period_bytes_min =	64,
1745 	.period_bytes_max =	(256*1024),
1746 	.periods_min =		1,
1747 	.periods_max =		1024,
1748 	.fifo_size =		0,
1749 };
1750 
1751 /*
1752  *  Capture support device description
1753  */
1754 
1755 static struct snd_pcm_hardware snd_trident_capture =
1756 {
1757 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1758 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1759 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1760 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1761 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1762 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1763 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1764 	.rate_min =		4000,
1765 	.rate_max =		48000,
1766 	.channels_min =		1,
1767 	.channels_max =		2,
1768 	.buffer_bytes_max =	(128*1024),
1769 	.period_bytes_min =	64,
1770 	.period_bytes_max =	(128*1024),
1771 	.periods_min =		1,
1772 	.periods_max =		1024,
1773 	.fifo_size =		0,
1774 };
1775 
1776 /*
1777  *  Foldback capture support device description
1778  */
1779 
1780 static struct snd_pcm_hardware snd_trident_foldback =
1781 {
1782 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1783 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1784 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1785 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1786 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1787 	.rates =		SNDRV_PCM_RATE_48000,
1788 	.rate_min =		48000,
1789 	.rate_max =		48000,
1790 	.channels_min =		2,
1791 	.channels_max =		2,
1792 	.buffer_bytes_max =	(128*1024),
1793 	.period_bytes_min =	64,
1794 	.period_bytes_max =	(128*1024),
1795 	.periods_min =		1,
1796 	.periods_max =		1024,
1797 	.fifo_size =		0,
1798 };
1799 
1800 /*
1801  *  SPDIF playback support device description
1802  */
1803 
1804 static struct snd_pcm_hardware snd_trident_spdif =
1805 {
1806 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1807 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1808 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1809 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1810 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1811 	.rates =		(SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
1812 				 SNDRV_PCM_RATE_48000),
1813 	.rate_min =		32000,
1814 	.rate_max =		48000,
1815 	.channels_min =		2,
1816 	.channels_max =		2,
1817 	.buffer_bytes_max =	(128*1024),
1818 	.period_bytes_min =	64,
1819 	.period_bytes_max =	(128*1024),
1820 	.periods_min =		1,
1821 	.periods_max =		1024,
1822 	.fifo_size =		0,
1823 };
1824 
1825 static struct snd_pcm_hardware snd_trident_spdif_7018 =
1826 {
1827 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1828 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1829 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1830 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1831 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1832 	.rates =		SNDRV_PCM_RATE_48000,
1833 	.rate_min =		48000,
1834 	.rate_max =		48000,
1835 	.channels_min =		2,
1836 	.channels_max =		2,
1837 	.buffer_bytes_max =	(128*1024),
1838 	.period_bytes_min =	64,
1839 	.period_bytes_max =	(128*1024),
1840 	.periods_min =		1,
1841 	.periods_max =		1024,
1842 	.fifo_size =		0,
1843 };
1844 
1845 static void snd_trident_pcm_free_substream(struct snd_pcm_runtime *runtime)
1846 {
1847 	struct snd_trident_voice *voice = runtime->private_data;
1848 	struct snd_trident *trident;
1849 
1850 	if (voice) {
1851 		trident = voice->trident;
1852 		snd_trident_free_voice(trident, voice);
1853 	}
1854 }
1855 
1856 static int snd_trident_playback_open(struct snd_pcm_substream *substream)
1857 {
1858 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1859 	struct snd_pcm_runtime *runtime = substream->runtime;
1860 	struct snd_trident_voice *voice;
1861 
1862 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1863 	if (voice == NULL)
1864 		return -EAGAIN;
1865 	snd_trident_pcm_mixer_build(trident, voice, substream);
1866 	voice->substream = substream;
1867 	runtime->private_data = voice;
1868 	runtime->private_free = snd_trident_pcm_free_substream;
1869 	runtime->hw = snd_trident_playback;
1870 	snd_pcm_set_sync(substream);
1871 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1872 	return 0;
1873 }
1874 
1875 /*---------------------------------------------------------------------------
1876    snd_trident_playback_close
1877 
1878    Description: This routine will close the 4DWave playback device. For now
1879                 we will simply free the dma transfer buffer.
1880 
1881    Parameters:	substream  - PCM substream class
1882 
1883   ---------------------------------------------------------------------------*/
1884 static int snd_trident_playback_close(struct snd_pcm_substream *substream)
1885 {
1886 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1887 	struct snd_pcm_runtime *runtime = substream->runtime;
1888 	struct snd_trident_voice *voice = runtime->private_data;
1889 
1890 	snd_trident_pcm_mixer_free(trident, voice, substream);
1891 	return 0;
1892 }
1893 
1894 /*---------------------------------------------------------------------------
1895    snd_trident_spdif_open
1896 
1897    Description: This routine will open the 4DWave SPDIF device.
1898 
1899    Parameters:	substream  - PCM substream class
1900 
1901    Returns:     status  - success or failure flag
1902 
1903   ---------------------------------------------------------------------------*/
1904 
1905 static int snd_trident_spdif_open(struct snd_pcm_substream *substream)
1906 {
1907 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1908 	struct snd_trident_voice *voice;
1909 	struct snd_pcm_runtime *runtime = substream->runtime;
1910 
1911 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1912 	if (voice == NULL)
1913 		return -EAGAIN;
1914 	voice->spdif = 1;
1915 	voice->substream = substream;
1916 	spin_lock_irq(&trident->reg_lock);
1917 	trident->spdif_pcm_bits = trident->spdif_bits;
1918 	spin_unlock_irq(&trident->reg_lock);
1919 
1920 	runtime->private_data = voice;
1921 	runtime->private_free = snd_trident_pcm_free_substream;
1922 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
1923 		runtime->hw = snd_trident_spdif;
1924 	} else {
1925 		runtime->hw = snd_trident_spdif_7018;
1926 	}
1927 
1928 	trident->spdif_pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1929 	snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE |
1930 		       SNDRV_CTL_EVENT_MASK_INFO, &trident->spdif_pcm_ctl->id);
1931 
1932 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1933 	return 0;
1934 }
1935 
1936 
1937 /*---------------------------------------------------------------------------
1938    snd_trident_spdif_close
1939 
1940    Description: This routine will close the 4DWave SPDIF device.
1941 
1942    Parameters:	substream  - PCM substream class
1943 
1944   ---------------------------------------------------------------------------*/
1945 
1946 static int snd_trident_spdif_close(struct snd_pcm_substream *substream)
1947 {
1948 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1949 	unsigned int temp;
1950 
1951 	spin_lock_irq(&trident->reg_lock);
1952 	// restore default SPDIF setting
1953 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1954 		outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1955 		outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
1956 	} else {
1957 		outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
1958 		temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1959 		if (trident->spdif_ctrl) {
1960 			temp |= SPDIF_EN;
1961 		} else {
1962 			temp &= ~SPDIF_EN;
1963 		}
1964 		outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1965 	}
1966 	spin_unlock_irq(&trident->reg_lock);
1967 	trident->spdif_pcm_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1968 	snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE |
1969 		       SNDRV_CTL_EVENT_MASK_INFO, &trident->spdif_pcm_ctl->id);
1970 	return 0;
1971 }
1972 
1973 /*---------------------------------------------------------------------------
1974    snd_trident_capture_open
1975 
1976    Description: This routine will open the 4DWave capture device.
1977 
1978    Parameters:	substream  - PCM substream class
1979 
1980    Returns:     status  - success or failure flag
1981 
1982   ---------------------------------------------------------------------------*/
1983 
1984 static int snd_trident_capture_open(struct snd_pcm_substream *substream)
1985 {
1986 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1987 	struct snd_trident_voice *voice;
1988 	struct snd_pcm_runtime *runtime = substream->runtime;
1989 
1990 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1991 	if (voice == NULL)
1992 		return -EAGAIN;
1993 	voice->capture = 1;
1994 	voice->substream = substream;
1995 	runtime->private_data = voice;
1996 	runtime->private_free = snd_trident_pcm_free_substream;
1997 	runtime->hw = snd_trident_capture;
1998 	snd_pcm_set_sync(substream);
1999 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
2000 	return 0;
2001 }
2002 
2003 /*---------------------------------------------------------------------------
2004    snd_trident_capture_close
2005 
2006    Description: This routine will close the 4DWave capture device. For now
2007                 we will simply free the dma transfer buffer.
2008 
2009    Parameters:	substream  - PCM substream class
2010 
2011   ---------------------------------------------------------------------------*/
2012 static int snd_trident_capture_close(struct snd_pcm_substream *substream)
2013 {
2014 	return 0;
2015 }
2016 
2017 /*---------------------------------------------------------------------------
2018    snd_trident_foldback_open
2019 
2020    Description: This routine will open the 4DWave foldback capture device.
2021 
2022    Parameters:	substream  - PCM substream class
2023 
2024    Returns:     status  - success or failure flag
2025 
2026   ---------------------------------------------------------------------------*/
2027 
2028 static int snd_trident_foldback_open(struct snd_pcm_substream *substream)
2029 {
2030 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
2031 	struct snd_trident_voice *voice;
2032 	struct snd_pcm_runtime *runtime = substream->runtime;
2033 
2034 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
2035 	if (voice == NULL)
2036 		return -EAGAIN;
2037 	voice->foldback_chan = substream->number;
2038 	voice->substream = substream;
2039 	runtime->private_data = voice;
2040 	runtime->private_free = snd_trident_pcm_free_substream;
2041 	runtime->hw = snd_trident_foldback;
2042 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
2043 	return 0;
2044 }
2045 
2046 /*---------------------------------------------------------------------------
2047    snd_trident_foldback_close
2048 
2049    Description: This routine will close the 4DWave foldback capture device.
2050 		For now we will simply free the dma transfer buffer.
2051 
2052    Parameters:	substream  - PCM substream class
2053 
2054   ---------------------------------------------------------------------------*/
2055 static int snd_trident_foldback_close(struct snd_pcm_substream *substream)
2056 {
2057 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
2058 	struct snd_trident_voice *voice;
2059 	struct snd_pcm_runtime *runtime = substream->runtime;
2060 	voice = runtime->private_data;
2061 
2062 	/* stop capture channel */
2063 	spin_lock_irq(&trident->reg_lock);
2064 	outb(0x00, TRID_REG(trident, T4D_RCI + voice->foldback_chan));
2065 	spin_unlock_irq(&trident->reg_lock);
2066 	return 0;
2067 }
2068 
2069 /*---------------------------------------------------------------------------
2070    PCM operations
2071   ---------------------------------------------------------------------------*/
2072 
2073 static struct snd_pcm_ops snd_trident_playback_ops = {
2074 	.open =		snd_trident_playback_open,
2075 	.close =	snd_trident_playback_close,
2076 	.ioctl =	snd_trident_ioctl,
2077 	.hw_params =	snd_trident_hw_params,
2078 	.hw_free =	snd_trident_hw_free,
2079 	.prepare =	snd_trident_playback_prepare,
2080 	.trigger =	snd_trident_trigger,
2081 	.pointer =	snd_trident_playback_pointer,
2082 };
2083 
2084 static struct snd_pcm_ops snd_trident_nx_playback_ops = {
2085 	.open =		snd_trident_playback_open,
2086 	.close =	snd_trident_playback_close,
2087 	.ioctl =	snd_trident_ioctl,
2088 	.hw_params =	snd_trident_hw_params,
2089 	.hw_free =	snd_trident_hw_free,
2090 	.prepare =	snd_trident_playback_prepare,
2091 	.trigger =	snd_trident_trigger,
2092 	.pointer =	snd_trident_playback_pointer,
2093 	.page =		snd_pcm_sgbuf_ops_page,
2094 };
2095 
2096 static struct snd_pcm_ops snd_trident_capture_ops = {
2097 	.open =		snd_trident_capture_open,
2098 	.close =	snd_trident_capture_close,
2099 	.ioctl =	snd_trident_ioctl,
2100 	.hw_params =	snd_trident_capture_hw_params,
2101 	.hw_free =	snd_trident_hw_free,
2102 	.prepare =	snd_trident_capture_prepare,
2103 	.trigger =	snd_trident_trigger,
2104 	.pointer =	snd_trident_capture_pointer,
2105 };
2106 
2107 static struct snd_pcm_ops snd_trident_si7018_capture_ops = {
2108 	.open =		snd_trident_capture_open,
2109 	.close =	snd_trident_capture_close,
2110 	.ioctl =	snd_trident_ioctl,
2111 	.hw_params =	snd_trident_si7018_capture_hw_params,
2112 	.hw_free =	snd_trident_si7018_capture_hw_free,
2113 	.prepare =	snd_trident_si7018_capture_prepare,
2114 	.trigger =	snd_trident_trigger,
2115 	.pointer =	snd_trident_playback_pointer,
2116 };
2117 
2118 static struct snd_pcm_ops snd_trident_foldback_ops = {
2119 	.open =		snd_trident_foldback_open,
2120 	.close =	snd_trident_foldback_close,
2121 	.ioctl =	snd_trident_ioctl,
2122 	.hw_params =	snd_trident_hw_params,
2123 	.hw_free =	snd_trident_hw_free,
2124 	.prepare =	snd_trident_foldback_prepare,
2125 	.trigger =	snd_trident_trigger,
2126 	.pointer =	snd_trident_playback_pointer,
2127 };
2128 
2129 static struct snd_pcm_ops snd_trident_nx_foldback_ops = {
2130 	.open =		snd_trident_foldback_open,
2131 	.close =	snd_trident_foldback_close,
2132 	.ioctl =	snd_trident_ioctl,
2133 	.hw_params =	snd_trident_hw_params,
2134 	.hw_free =	snd_trident_hw_free,
2135 	.prepare =	snd_trident_foldback_prepare,
2136 	.trigger =	snd_trident_trigger,
2137 	.pointer =	snd_trident_playback_pointer,
2138 	.page =		snd_pcm_sgbuf_ops_page,
2139 };
2140 
2141 static struct snd_pcm_ops snd_trident_spdif_ops = {
2142 	.open =		snd_trident_spdif_open,
2143 	.close =	snd_trident_spdif_close,
2144 	.ioctl =	snd_trident_ioctl,
2145 	.hw_params =	snd_trident_spdif_hw_params,
2146 	.hw_free =	snd_trident_hw_free,
2147 	.prepare =	snd_trident_spdif_prepare,
2148 	.trigger =	snd_trident_trigger,
2149 	.pointer =	snd_trident_spdif_pointer,
2150 };
2151 
2152 static struct snd_pcm_ops snd_trident_spdif_7018_ops = {
2153 	.open =		snd_trident_spdif_open,
2154 	.close =	snd_trident_spdif_close,
2155 	.ioctl =	snd_trident_ioctl,
2156 	.hw_params =	snd_trident_spdif_hw_params,
2157 	.hw_free =	snd_trident_hw_free,
2158 	.prepare =	snd_trident_spdif_prepare,
2159 	.trigger =	snd_trident_trigger,
2160 	.pointer =	snd_trident_playback_pointer,
2161 };
2162 
2163 /*---------------------------------------------------------------------------
2164    snd_trident_pcm
2165 
2166    Description: This routine registers the 4DWave device for PCM support.
2167 
2168    Parameters:  trident - pointer to target device class for 4DWave.
2169 
2170    Returns:     None
2171 
2172   ---------------------------------------------------------------------------*/
2173 
2174 int __devinit snd_trident_pcm(struct snd_trident * trident,
2175 			      int device, struct snd_pcm ** rpcm)
2176 {
2177 	struct snd_pcm *pcm;
2178 	int err;
2179 
2180 	if (rpcm)
2181 		*rpcm = NULL;
2182 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx", device, trident->ChanPCM, 1, &pcm)) < 0)
2183 		return err;
2184 
2185 	pcm->private_data = trident;
2186 
2187 	if (trident->tlb.entries) {
2188 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_nx_playback_ops);
2189 	} else {
2190 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_playback_ops);
2191 	}
2192 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
2193 			trident->device != TRIDENT_DEVICE_ID_SI7018 ?
2194 			&snd_trident_capture_ops :
2195 			&snd_trident_si7018_capture_ops);
2196 
2197 	pcm->info_flags = 0;
2198 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
2199 	strcpy(pcm->name, "Trident 4DWave");
2200 	trident->pcm = pcm;
2201 
2202 	if (trident->tlb.entries) {
2203 		struct snd_pcm_substream *substream;
2204 		for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
2205 			snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV_SG,
2206 						      snd_dma_pci_data(trident->pci),
2207 						      64*1024, 128*1024);
2208 		snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
2209 					      SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
2210 					      64*1024, 128*1024);
2211 	} else {
2212 		snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
2213 						      snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2214 	}
2215 
2216 	if (rpcm)
2217 		*rpcm = pcm;
2218 	return 0;
2219 }
2220 
2221 /*---------------------------------------------------------------------------
2222    snd_trident_foldback_pcm
2223 
2224    Description: This routine registers the 4DWave device for foldback PCM support.
2225 
2226    Parameters:  trident - pointer to target device class for 4DWave.
2227 
2228    Returns:     None
2229 
2230   ---------------------------------------------------------------------------*/
2231 
2232 int __devinit snd_trident_foldback_pcm(struct snd_trident * trident,
2233 				       int device, struct snd_pcm ** rpcm)
2234 {
2235 	struct snd_pcm *foldback;
2236 	int err;
2237 	int num_chan = 3;
2238 	struct snd_pcm_substream *substream;
2239 
2240 	if (rpcm)
2241 		*rpcm = NULL;
2242 	if (trident->device == TRIDENT_DEVICE_ID_NX)
2243 		num_chan = 4;
2244 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx", device, 0, num_chan, &foldback)) < 0)
2245 		return err;
2246 
2247 	foldback->private_data = trident;
2248 	if (trident->tlb.entries)
2249 		snd_pcm_set_ops(foldback, SNDRV_PCM_STREAM_CAPTURE, &snd_trident_nx_foldback_ops);
2250 	else
2251 		snd_pcm_set_ops(foldback, SNDRV_PCM_STREAM_CAPTURE, &snd_trident_foldback_ops);
2252 	foldback->info_flags = 0;
2253 	strcpy(foldback->name, "Trident 4DWave");
2254 	substream = foldback->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
2255 	strcpy(substream->name, "Front Mixer");
2256 	substream = substream->next;
2257 	strcpy(substream->name, "Reverb Mixer");
2258 	substream = substream->next;
2259 	strcpy(substream->name, "Chorus Mixer");
2260 	if (num_chan == 4) {
2261 		substream = substream->next;
2262 		strcpy(substream->name, "Second AC'97 ADC");
2263 	}
2264 	trident->foldback = foldback;
2265 
2266 	if (trident->tlb.entries)
2267 		snd_pcm_lib_preallocate_pages_for_all(foldback, SNDRV_DMA_TYPE_DEV_SG,
2268 						      snd_dma_pci_data(trident->pci), 0, 128*1024);
2269 	else
2270 		snd_pcm_lib_preallocate_pages_for_all(foldback, SNDRV_DMA_TYPE_DEV,
2271 						      snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2272 
2273 	if (rpcm)
2274 		*rpcm = foldback;
2275 	return 0;
2276 }
2277 
2278 /*---------------------------------------------------------------------------
2279    snd_trident_spdif
2280 
2281    Description: This routine registers the 4DWave-NX device for SPDIF support.
2282 
2283    Parameters:  trident - pointer to target device class for 4DWave-NX.
2284 
2285    Returns:     None
2286 
2287   ---------------------------------------------------------------------------*/
2288 
2289 int __devinit snd_trident_spdif_pcm(struct snd_trident * trident,
2290 				    int device, struct snd_pcm ** rpcm)
2291 {
2292 	struct snd_pcm *spdif;
2293 	int err;
2294 
2295 	if (rpcm)
2296 		*rpcm = NULL;
2297 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx IEC958", device, 1, 0, &spdif)) < 0)
2298 		return err;
2299 
2300 	spdif->private_data = trident;
2301 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2302 		snd_pcm_set_ops(spdif, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_spdif_ops);
2303 	} else {
2304 		snd_pcm_set_ops(spdif, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_spdif_7018_ops);
2305 	}
2306 	spdif->info_flags = 0;
2307 	strcpy(spdif->name, "Trident 4DWave IEC958");
2308 	trident->spdif = spdif;
2309 
2310 	snd_pcm_lib_preallocate_pages_for_all(spdif, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2311 
2312 	if (rpcm)
2313 		*rpcm = spdif;
2314 	return 0;
2315 }
2316 
2317 /*
2318  *  Mixer part
2319  */
2320 
2321 
2322 /*---------------------------------------------------------------------------
2323     snd_trident_spdif_control
2324 
2325     Description: enable/disable S/PDIF out from ac97 mixer
2326   ---------------------------------------------------------------------------*/
2327 
2328 #define snd_trident_spdif_control_info	snd_ctl_boolean_mono_info
2329 
2330 static int snd_trident_spdif_control_get(struct snd_kcontrol *kcontrol,
2331 					 struct snd_ctl_elem_value *ucontrol)
2332 {
2333 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2334 	unsigned char val;
2335 
2336 	spin_lock_irq(&trident->reg_lock);
2337 	val = trident->spdif_ctrl;
2338 	ucontrol->value.integer.value[0] = val == kcontrol->private_value;
2339 	spin_unlock_irq(&trident->reg_lock);
2340 	return 0;
2341 }
2342 
2343 static int snd_trident_spdif_control_put(struct snd_kcontrol *kcontrol,
2344 					 struct snd_ctl_elem_value *ucontrol)
2345 {
2346 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2347 	unsigned char val;
2348 	int change;
2349 
2350 	val = ucontrol->value.integer.value[0] ? (unsigned char) kcontrol->private_value : 0x00;
2351 	spin_lock_irq(&trident->reg_lock);
2352 	/* S/PDIF C Channel bits 0-31 : 48khz, SCMS disabled */
2353 	change = trident->spdif_ctrl != val;
2354 	trident->spdif_ctrl = val;
2355 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2356 		if ((inb(TRID_REG(trident, NX_SPCTRL_SPCSO + 3)) & 0x10) == 0) {
2357 			outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
2358 			outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
2359 		}
2360 	} else {
2361 		if (trident->spdif == NULL) {
2362 			unsigned int temp;
2363 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2364 			temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & ~SPDIF_EN;
2365 			if (val)
2366 				temp |= SPDIF_EN;
2367 			outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
2368 		}
2369 	}
2370 	spin_unlock_irq(&trident->reg_lock);
2371 	return change;
2372 }
2373 
2374 static struct snd_kcontrol_new snd_trident_spdif_control __devinitdata =
2375 {
2376 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2377 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),
2378 	.info =		snd_trident_spdif_control_info,
2379 	.get =		snd_trident_spdif_control_get,
2380 	.put =		snd_trident_spdif_control_put,
2381 	.private_value = 0x28,
2382 };
2383 
2384 /*---------------------------------------------------------------------------
2385     snd_trident_spdif_default
2386 
2387     Description: put/get the S/PDIF default settings
2388   ---------------------------------------------------------------------------*/
2389 
2390 static int snd_trident_spdif_default_info(struct snd_kcontrol *kcontrol,
2391 					  struct snd_ctl_elem_info *uinfo)
2392 {
2393 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2394 	uinfo->count = 1;
2395 	return 0;
2396 }
2397 
2398 static int snd_trident_spdif_default_get(struct snd_kcontrol *kcontrol,
2399 					 struct snd_ctl_elem_value *ucontrol)
2400 {
2401 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2402 
2403 	spin_lock_irq(&trident->reg_lock);
2404 	ucontrol->value.iec958.status[0] = (trident->spdif_bits >> 0) & 0xff;
2405 	ucontrol->value.iec958.status[1] = (trident->spdif_bits >> 8) & 0xff;
2406 	ucontrol->value.iec958.status[2] = (trident->spdif_bits >> 16) & 0xff;
2407 	ucontrol->value.iec958.status[3] = (trident->spdif_bits >> 24) & 0xff;
2408 	spin_unlock_irq(&trident->reg_lock);
2409 	return 0;
2410 }
2411 
2412 static int snd_trident_spdif_default_put(struct snd_kcontrol *kcontrol,
2413 					 struct snd_ctl_elem_value *ucontrol)
2414 {
2415 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2416 	unsigned int val;
2417 	int change;
2418 
2419 	val = (ucontrol->value.iec958.status[0] << 0) |
2420 	      (ucontrol->value.iec958.status[1] << 8) |
2421 	      (ucontrol->value.iec958.status[2] << 16) |
2422 	      (ucontrol->value.iec958.status[3] << 24);
2423 	spin_lock_irq(&trident->reg_lock);
2424 	change = trident->spdif_bits != val;
2425 	trident->spdif_bits = val;
2426 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2427 		if ((inb(TRID_REG(trident, NX_SPCTRL_SPCSO + 3)) & 0x10) == 0)
2428 			outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
2429 	} else {
2430 		if (trident->spdif == NULL)
2431 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2432 	}
2433 	spin_unlock_irq(&trident->reg_lock);
2434 	return change;
2435 }
2436 
2437 static struct snd_kcontrol_new snd_trident_spdif_default __devinitdata =
2438 {
2439 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2440 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2441 	.info =		snd_trident_spdif_default_info,
2442 	.get =		snd_trident_spdif_default_get,
2443 	.put =		snd_trident_spdif_default_put
2444 };
2445 
2446 /*---------------------------------------------------------------------------
2447     snd_trident_spdif_mask
2448 
2449     Description: put/get the S/PDIF mask
2450   ---------------------------------------------------------------------------*/
2451 
2452 static int snd_trident_spdif_mask_info(struct snd_kcontrol *kcontrol,
2453 				       struct snd_ctl_elem_info *uinfo)
2454 {
2455 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2456 	uinfo->count = 1;
2457 	return 0;
2458 }
2459 
2460 static int snd_trident_spdif_mask_get(struct snd_kcontrol *kcontrol,
2461 				      struct snd_ctl_elem_value *ucontrol)
2462 {
2463 	ucontrol->value.iec958.status[0] = 0xff;
2464 	ucontrol->value.iec958.status[1] = 0xff;
2465 	ucontrol->value.iec958.status[2] = 0xff;
2466 	ucontrol->value.iec958.status[3] = 0xff;
2467 	return 0;
2468 }
2469 
2470 static struct snd_kcontrol_new snd_trident_spdif_mask __devinitdata =
2471 {
2472 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2473 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2474 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
2475 	.info =		snd_trident_spdif_mask_info,
2476 	.get =		snd_trident_spdif_mask_get,
2477 };
2478 
2479 /*---------------------------------------------------------------------------
2480     snd_trident_spdif_stream
2481 
2482     Description: put/get the S/PDIF stream settings
2483   ---------------------------------------------------------------------------*/
2484 
2485 static int snd_trident_spdif_stream_info(struct snd_kcontrol *kcontrol,
2486 					 struct snd_ctl_elem_info *uinfo)
2487 {
2488 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2489 	uinfo->count = 1;
2490 	return 0;
2491 }
2492 
2493 static int snd_trident_spdif_stream_get(struct snd_kcontrol *kcontrol,
2494 					struct snd_ctl_elem_value *ucontrol)
2495 {
2496 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2497 
2498 	spin_lock_irq(&trident->reg_lock);
2499 	ucontrol->value.iec958.status[0] = (trident->spdif_pcm_bits >> 0) & 0xff;
2500 	ucontrol->value.iec958.status[1] = (trident->spdif_pcm_bits >> 8) & 0xff;
2501 	ucontrol->value.iec958.status[2] = (trident->spdif_pcm_bits >> 16) & 0xff;
2502 	ucontrol->value.iec958.status[3] = (trident->spdif_pcm_bits >> 24) & 0xff;
2503 	spin_unlock_irq(&trident->reg_lock);
2504 	return 0;
2505 }
2506 
2507 static int snd_trident_spdif_stream_put(struct snd_kcontrol *kcontrol,
2508 					struct snd_ctl_elem_value *ucontrol)
2509 {
2510 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2511 	unsigned int val;
2512 	int change;
2513 
2514 	val = (ucontrol->value.iec958.status[0] << 0) |
2515 	      (ucontrol->value.iec958.status[1] << 8) |
2516 	      (ucontrol->value.iec958.status[2] << 16) |
2517 	      (ucontrol->value.iec958.status[3] << 24);
2518 	spin_lock_irq(&trident->reg_lock);
2519 	change = trident->spdif_pcm_bits != val;
2520 	trident->spdif_pcm_bits = val;
2521 	if (trident->spdif != NULL) {
2522 		if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2523 			outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
2524 		} else {
2525 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2526 		}
2527 	}
2528 	spin_unlock_irq(&trident->reg_lock);
2529 	return change;
2530 }
2531 
2532 static struct snd_kcontrol_new snd_trident_spdif_stream __devinitdata =
2533 {
2534 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2535 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2536 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2537 	.info =		snd_trident_spdif_stream_info,
2538 	.get =		snd_trident_spdif_stream_get,
2539 	.put =		snd_trident_spdif_stream_put
2540 };
2541 
2542 /*---------------------------------------------------------------------------
2543     snd_trident_ac97_control
2544 
2545     Description: enable/disable rear path for ac97
2546   ---------------------------------------------------------------------------*/
2547 
2548 #define snd_trident_ac97_control_info	snd_ctl_boolean_mono_info
2549 
2550 static int snd_trident_ac97_control_get(struct snd_kcontrol *kcontrol,
2551 					struct snd_ctl_elem_value *ucontrol)
2552 {
2553 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2554 	unsigned char val;
2555 
2556 	spin_lock_irq(&trident->reg_lock);
2557 	val = trident->ac97_ctrl = inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2558 	ucontrol->value.integer.value[0] = (val & (1 << kcontrol->private_value)) ? 1 : 0;
2559 	spin_unlock_irq(&trident->reg_lock);
2560 	return 0;
2561 }
2562 
2563 static int snd_trident_ac97_control_put(struct snd_kcontrol *kcontrol,
2564 					struct snd_ctl_elem_value *ucontrol)
2565 {
2566 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2567 	unsigned char val;
2568 	int change = 0;
2569 
2570 	spin_lock_irq(&trident->reg_lock);
2571 	val = trident->ac97_ctrl = inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2572 	val &= ~(1 << kcontrol->private_value);
2573 	if (ucontrol->value.integer.value[0])
2574 		val |= 1 << kcontrol->private_value;
2575 	change = val != trident->ac97_ctrl;
2576 	trident->ac97_ctrl = val;
2577 	outl(trident->ac97_ctrl = val, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2578 	spin_unlock_irq(&trident->reg_lock);
2579 	return change;
2580 }
2581 
2582 static struct snd_kcontrol_new snd_trident_ac97_rear_control __devinitdata =
2583 {
2584 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2585 	.name =         "Rear Path",
2586 	.info =		snd_trident_ac97_control_info,
2587 	.get =		snd_trident_ac97_control_get,
2588 	.put =		snd_trident_ac97_control_put,
2589 	.private_value = 4,
2590 };
2591 
2592 /*---------------------------------------------------------------------------
2593     snd_trident_vol_control
2594 
2595     Description: wave & music volume control
2596   ---------------------------------------------------------------------------*/
2597 
2598 static int snd_trident_vol_control_info(struct snd_kcontrol *kcontrol,
2599 					struct snd_ctl_elem_info *uinfo)
2600 {
2601 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2602 	uinfo->count = 2;
2603 	uinfo->value.integer.min = 0;
2604 	uinfo->value.integer.max = 255;
2605 	return 0;
2606 }
2607 
2608 static int snd_trident_vol_control_get(struct snd_kcontrol *kcontrol,
2609 				       struct snd_ctl_elem_value *ucontrol)
2610 {
2611 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2612 	unsigned int val;
2613 
2614 	val = trident->musicvol_wavevol;
2615 	ucontrol->value.integer.value[0] = 255 - ((val >> kcontrol->private_value) & 0xff);
2616 	ucontrol->value.integer.value[1] = 255 - ((val >> (kcontrol->private_value + 8)) & 0xff);
2617 	return 0;
2618 }
2619 
2620 static const DECLARE_TLV_DB_SCALE(db_scale_gvol, -6375, 25, 0);
2621 
2622 static int snd_trident_vol_control_put(struct snd_kcontrol *kcontrol,
2623 				       struct snd_ctl_elem_value *ucontrol)
2624 {
2625 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2626 	unsigned int val;
2627 	int change = 0;
2628 
2629 	spin_lock_irq(&trident->reg_lock);
2630 	val = trident->musicvol_wavevol;
2631 	val &= ~(0xffff << kcontrol->private_value);
2632 	val |= ((255 - (ucontrol->value.integer.value[0] & 0xff)) |
2633 	        ((255 - (ucontrol->value.integer.value[1] & 0xff)) << 8)) << kcontrol->private_value;
2634 	change = val != trident->musicvol_wavevol;
2635 	outl(trident->musicvol_wavevol = val, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
2636 	spin_unlock_irq(&trident->reg_lock);
2637 	return change;
2638 }
2639 
2640 static struct snd_kcontrol_new snd_trident_vol_music_control __devinitdata =
2641 {
2642 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2643 	.name =         "Music Playback Volume",
2644 	.info =		snd_trident_vol_control_info,
2645 	.get =		snd_trident_vol_control_get,
2646 	.put =		snd_trident_vol_control_put,
2647 	.private_value = 16,
2648 	.tlv = { .p = db_scale_gvol },
2649 };
2650 
2651 static struct snd_kcontrol_new snd_trident_vol_wave_control __devinitdata =
2652 {
2653 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2654 	.name =         "Wave Playback Volume",
2655 	.info =		snd_trident_vol_control_info,
2656 	.get =		snd_trident_vol_control_get,
2657 	.put =		snd_trident_vol_control_put,
2658 	.private_value = 0,
2659 	.tlv = { .p = db_scale_gvol },
2660 };
2661 
2662 /*---------------------------------------------------------------------------
2663     snd_trident_pcm_vol_control
2664 
2665     Description: PCM front volume control
2666   ---------------------------------------------------------------------------*/
2667 
2668 static int snd_trident_pcm_vol_control_info(struct snd_kcontrol *kcontrol,
2669 					    struct snd_ctl_elem_info *uinfo)
2670 {
2671 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2672 
2673 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2674 	uinfo->count = 1;
2675 	uinfo->value.integer.min = 0;
2676 	uinfo->value.integer.max = 255;
2677 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
2678 		uinfo->value.integer.max = 1023;
2679 	return 0;
2680 }
2681 
2682 static int snd_trident_pcm_vol_control_get(struct snd_kcontrol *kcontrol,
2683 					   struct snd_ctl_elem_value *ucontrol)
2684 {
2685 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2686 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2687 
2688 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2689 		ucontrol->value.integer.value[0] = 1023 - mix->vol;
2690 	} else {
2691 		ucontrol->value.integer.value[0] = 255 - (mix->vol>>2);
2692 	}
2693 	return 0;
2694 }
2695 
2696 static int snd_trident_pcm_vol_control_put(struct snd_kcontrol *kcontrol,
2697 					   struct snd_ctl_elem_value *ucontrol)
2698 {
2699 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2700 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2701 	unsigned int val;
2702 	int change = 0;
2703 
2704 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2705 		val = 1023 - (ucontrol->value.integer.value[0] & 1023);
2706 	} else {
2707 		val = (255 - (ucontrol->value.integer.value[0] & 255)) << 2;
2708 	}
2709 	spin_lock_irq(&trident->reg_lock);
2710 	change = val != mix->vol;
2711 	mix->vol = val;
2712 	if (mix->voice != NULL)
2713 		snd_trident_write_vol_reg(trident, mix->voice, val);
2714 	spin_unlock_irq(&trident->reg_lock);
2715 	return change;
2716 }
2717 
2718 static struct snd_kcontrol_new snd_trident_pcm_vol_control __devinitdata =
2719 {
2720 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2721 	.name =         "PCM Front Playback Volume",
2722 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2723 	.count =	32,
2724 	.info =		snd_trident_pcm_vol_control_info,
2725 	.get =		snd_trident_pcm_vol_control_get,
2726 	.put =		snd_trident_pcm_vol_control_put,
2727 	/* FIXME: no tlv yet */
2728 };
2729 
2730 /*---------------------------------------------------------------------------
2731     snd_trident_pcm_pan_control
2732 
2733     Description: PCM front pan control
2734   ---------------------------------------------------------------------------*/
2735 
2736 static int snd_trident_pcm_pan_control_info(struct snd_kcontrol *kcontrol,
2737 					    struct snd_ctl_elem_info *uinfo)
2738 {
2739 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2740 	uinfo->count = 1;
2741 	uinfo->value.integer.min = 0;
2742 	uinfo->value.integer.max = 127;
2743 	return 0;
2744 }
2745 
2746 static int snd_trident_pcm_pan_control_get(struct snd_kcontrol *kcontrol,
2747 					   struct snd_ctl_elem_value *ucontrol)
2748 {
2749 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2750 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2751 
2752 	ucontrol->value.integer.value[0] = mix->pan;
2753 	if (ucontrol->value.integer.value[0] & 0x40) {
2754 		ucontrol->value.integer.value[0] = (0x3f - (ucontrol->value.integer.value[0] & 0x3f));
2755 	} else {
2756 		ucontrol->value.integer.value[0] |= 0x40;
2757 	}
2758 	return 0;
2759 }
2760 
2761 static int snd_trident_pcm_pan_control_put(struct snd_kcontrol *kcontrol,
2762 					   struct snd_ctl_elem_value *ucontrol)
2763 {
2764 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2765 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2766 	unsigned char val;
2767 	int change = 0;
2768 
2769 	if (ucontrol->value.integer.value[0] & 0x40)
2770 		val = ucontrol->value.integer.value[0] & 0x3f;
2771 	else
2772 		val = (0x3f - (ucontrol->value.integer.value[0] & 0x3f)) | 0x40;
2773 	spin_lock_irq(&trident->reg_lock);
2774 	change = val != mix->pan;
2775 	mix->pan = val;
2776 	if (mix->voice != NULL)
2777 		snd_trident_write_pan_reg(trident, mix->voice, val);
2778 	spin_unlock_irq(&trident->reg_lock);
2779 	return change;
2780 }
2781 
2782 static struct snd_kcontrol_new snd_trident_pcm_pan_control __devinitdata =
2783 {
2784 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2785 	.name =         "PCM Pan Playback Control",
2786 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2787 	.count =	32,
2788 	.info =		snd_trident_pcm_pan_control_info,
2789 	.get =		snd_trident_pcm_pan_control_get,
2790 	.put =		snd_trident_pcm_pan_control_put,
2791 };
2792 
2793 /*---------------------------------------------------------------------------
2794     snd_trident_pcm_rvol_control
2795 
2796     Description: PCM reverb volume control
2797   ---------------------------------------------------------------------------*/
2798 
2799 static int snd_trident_pcm_rvol_control_info(struct snd_kcontrol *kcontrol,
2800 					     struct snd_ctl_elem_info *uinfo)
2801 {
2802 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2803 	uinfo->count = 1;
2804 	uinfo->value.integer.min = 0;
2805 	uinfo->value.integer.max = 127;
2806 	return 0;
2807 }
2808 
2809 static int snd_trident_pcm_rvol_control_get(struct snd_kcontrol *kcontrol,
2810 					    struct snd_ctl_elem_value *ucontrol)
2811 {
2812 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2813 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2814 
2815 	ucontrol->value.integer.value[0] = 127 - mix->rvol;
2816 	return 0;
2817 }
2818 
2819 static int snd_trident_pcm_rvol_control_put(struct snd_kcontrol *kcontrol,
2820 					    struct snd_ctl_elem_value *ucontrol)
2821 {
2822 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2823 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2824 	unsigned short val;
2825 	int change = 0;
2826 
2827 	val = 0x7f - (ucontrol->value.integer.value[0] & 0x7f);
2828 	spin_lock_irq(&trident->reg_lock);
2829 	change = val != mix->rvol;
2830 	mix->rvol = val;
2831 	if (mix->voice != NULL)
2832 		snd_trident_write_rvol_reg(trident, mix->voice, val);
2833 	spin_unlock_irq(&trident->reg_lock);
2834 	return change;
2835 }
2836 
2837 static const DECLARE_TLV_DB_SCALE(db_scale_crvol, -3175, 25, 1);
2838 
2839 static struct snd_kcontrol_new snd_trident_pcm_rvol_control __devinitdata =
2840 {
2841 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2842 	.name =         "PCM Reverb Playback Volume",
2843 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2844 	.count = 	32,
2845 	.info =		snd_trident_pcm_rvol_control_info,
2846 	.get =		snd_trident_pcm_rvol_control_get,
2847 	.put =		snd_trident_pcm_rvol_control_put,
2848 	.tlv = { .p = db_scale_crvol },
2849 };
2850 
2851 /*---------------------------------------------------------------------------
2852     snd_trident_pcm_cvol_control
2853 
2854     Description: PCM chorus volume control
2855   ---------------------------------------------------------------------------*/
2856 
2857 static int snd_trident_pcm_cvol_control_info(struct snd_kcontrol *kcontrol,
2858 					     struct snd_ctl_elem_info *uinfo)
2859 {
2860 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2861 	uinfo->count = 1;
2862 	uinfo->value.integer.min = 0;
2863 	uinfo->value.integer.max = 127;
2864 	return 0;
2865 }
2866 
2867 static int snd_trident_pcm_cvol_control_get(struct snd_kcontrol *kcontrol,
2868 					    struct snd_ctl_elem_value *ucontrol)
2869 {
2870 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2871 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2872 
2873 	ucontrol->value.integer.value[0] = 127 - mix->cvol;
2874 	return 0;
2875 }
2876 
2877 static int snd_trident_pcm_cvol_control_put(struct snd_kcontrol *kcontrol,
2878 					    struct snd_ctl_elem_value *ucontrol)
2879 {
2880 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2881 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2882 	unsigned short val;
2883 	int change = 0;
2884 
2885 	val = 0x7f - (ucontrol->value.integer.value[0] & 0x7f);
2886 	spin_lock_irq(&trident->reg_lock);
2887 	change = val != mix->cvol;
2888 	mix->cvol = val;
2889 	if (mix->voice != NULL)
2890 		snd_trident_write_cvol_reg(trident, mix->voice, val);
2891 	spin_unlock_irq(&trident->reg_lock);
2892 	return change;
2893 }
2894 
2895 static struct snd_kcontrol_new snd_trident_pcm_cvol_control __devinitdata =
2896 {
2897 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2898 	.name =         "PCM Chorus Playback Volume",
2899 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2900 	.count =	32,
2901 	.info =		snd_trident_pcm_cvol_control_info,
2902 	.get =		snd_trident_pcm_cvol_control_get,
2903 	.put =		snd_trident_pcm_cvol_control_put,
2904 	.tlv = { .p = db_scale_crvol },
2905 };
2906 
2907 static void snd_trident_notify_pcm_change1(struct snd_card *card,
2908 					   struct snd_kcontrol *kctl,
2909 					   int num, int activate)
2910 {
2911 	struct snd_ctl_elem_id id;
2912 
2913 	if (! kctl)
2914 		return;
2915 	if (activate)
2916 		kctl->vd[num].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2917 	else
2918 		kctl->vd[num].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2919 	snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE |
2920 		       SNDRV_CTL_EVENT_MASK_INFO,
2921 		       snd_ctl_build_ioff(&id, kctl, num));
2922 }
2923 
2924 static void snd_trident_notify_pcm_change(struct snd_trident *trident,
2925 					  struct snd_trident_pcm_mixer *tmix,
2926 					  int num, int activate)
2927 {
2928 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_vol, num, activate);
2929 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_pan, num, activate);
2930 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_rvol, num, activate);
2931 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_cvol, num, activate);
2932 }
2933 
2934 static int snd_trident_pcm_mixer_build(struct snd_trident *trident,
2935 				       struct snd_trident_voice *voice,
2936 				       struct snd_pcm_substream *substream)
2937 {
2938 	struct snd_trident_pcm_mixer *tmix;
2939 
2940 	if (snd_BUG_ON(!trident || !voice || !substream))
2941 		return -EINVAL;
2942 	tmix = &trident->pcm_mixer[substream->number];
2943 	tmix->voice = voice;
2944 	tmix->vol = T4D_DEFAULT_PCM_VOL;
2945 	tmix->pan = T4D_DEFAULT_PCM_PAN;
2946 	tmix->rvol = T4D_DEFAULT_PCM_RVOL;
2947 	tmix->cvol = T4D_DEFAULT_PCM_CVOL;
2948 	snd_trident_notify_pcm_change(trident, tmix, substream->number, 1);
2949 	return 0;
2950 }
2951 
2952 static int snd_trident_pcm_mixer_free(struct snd_trident *trident, struct snd_trident_voice *voice, struct snd_pcm_substream *substream)
2953 {
2954 	struct snd_trident_pcm_mixer *tmix;
2955 
2956 	if (snd_BUG_ON(!trident || !substream))
2957 		return -EINVAL;
2958 	tmix = &trident->pcm_mixer[substream->number];
2959 	tmix->voice = NULL;
2960 	snd_trident_notify_pcm_change(trident, tmix, substream->number, 0);
2961 	return 0;
2962 }
2963 
2964 /*---------------------------------------------------------------------------
2965    snd_trident_mixer
2966 
2967    Description: This routine registers the 4DWave device for mixer support.
2968 
2969    Parameters:  trident - pointer to target device class for 4DWave.
2970 
2971    Returns:     None
2972 
2973   ---------------------------------------------------------------------------*/
2974 
2975 static int __devinit snd_trident_mixer(struct snd_trident * trident, int pcm_spdif_device)
2976 {
2977 	struct snd_ac97_template _ac97;
2978 	struct snd_card *card = trident->card;
2979 	struct snd_kcontrol *kctl;
2980 	struct snd_ctl_elem_value *uctl;
2981 	int idx, err, retries = 2;
2982 	static struct snd_ac97_bus_ops ops = {
2983 		.write = snd_trident_codec_write,
2984 		.read = snd_trident_codec_read,
2985 	};
2986 
2987 	uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
2988 	if (!uctl)
2989 		return -ENOMEM;
2990 
2991 	if ((err = snd_ac97_bus(trident->card, 0, &ops, NULL, &trident->ac97_bus)) < 0)
2992 		goto __out;
2993 
2994 	memset(&_ac97, 0, sizeof(_ac97));
2995 	_ac97.private_data = trident;
2996 	trident->ac97_detect = 1;
2997 
2998       __again:
2999 	if ((err = snd_ac97_mixer(trident->ac97_bus, &_ac97, &trident->ac97)) < 0) {
3000 		if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
3001 			if ((err = snd_trident_sis_reset(trident)) < 0)
3002 				goto __out;
3003 			if (retries-- > 0)
3004 				goto __again;
3005 			err = -EIO;
3006 		}
3007 		goto __out;
3008 	}
3009 
3010 	/* secondary codec? */
3011 	if (trident->device == TRIDENT_DEVICE_ID_SI7018 &&
3012 	    (inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_PRIMARY_READY) != 0) {
3013 		_ac97.num = 1;
3014 		err = snd_ac97_mixer(trident->ac97_bus, &_ac97, &trident->ac97_sec);
3015 		if (err < 0)
3016 			snd_printk(KERN_ERR "SI7018: the secondary codec - invalid access\n");
3017 #if 0	// only for my testing purpose --jk
3018 		{
3019 			struct snd_ac97 *mc97;
3020 			err = snd_ac97_modem(trident->card, &_ac97, &mc97);
3021 			if (err < 0)
3022 				snd_printk(KERN_ERR "snd_ac97_modem returned error %i\n", err);
3023 		}
3024 #endif
3025 	}
3026 
3027 	trident->ac97_detect = 0;
3028 
3029 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
3030 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_vol_wave_control, trident))) < 0)
3031 			goto __out;
3032 		kctl->put(kctl, uctl);
3033 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_vol_music_control, trident))) < 0)
3034 			goto __out;
3035 		kctl->put(kctl, uctl);
3036 		outl(trident->musicvol_wavevol = 0x00000000, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3037 	} else {
3038 		outl(trident->musicvol_wavevol = 0xffff0000, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3039 	}
3040 
3041 	for (idx = 0; idx < 32; idx++) {
3042 		struct snd_trident_pcm_mixer *tmix;
3043 
3044 		tmix = &trident->pcm_mixer[idx];
3045 		tmix->voice = NULL;
3046 	}
3047 	if ((trident->ctl_vol = snd_ctl_new1(&snd_trident_pcm_vol_control, trident)) == NULL)
3048 		goto __nomem;
3049 	if ((err = snd_ctl_add(card, trident->ctl_vol)))
3050 		goto __out;
3051 
3052 	if ((trident->ctl_pan = snd_ctl_new1(&snd_trident_pcm_pan_control, trident)) == NULL)
3053 		goto __nomem;
3054 	if ((err = snd_ctl_add(card, trident->ctl_pan)))
3055 		goto __out;
3056 
3057 	if ((trident->ctl_rvol = snd_ctl_new1(&snd_trident_pcm_rvol_control, trident)) == NULL)
3058 		goto __nomem;
3059 	if ((err = snd_ctl_add(card, trident->ctl_rvol)))
3060 		goto __out;
3061 
3062 	if ((trident->ctl_cvol = snd_ctl_new1(&snd_trident_pcm_cvol_control, trident)) == NULL)
3063 		goto __nomem;
3064 	if ((err = snd_ctl_add(card, trident->ctl_cvol)))
3065 		goto __out;
3066 
3067 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3068 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_ac97_rear_control, trident))) < 0)
3069 			goto __out;
3070 		kctl->put(kctl, uctl);
3071 	}
3072 	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018) {
3073 
3074 		kctl = snd_ctl_new1(&snd_trident_spdif_control, trident);
3075 		if (kctl == NULL) {
3076 			err = -ENOMEM;
3077 			goto __out;
3078 		}
3079 		if (trident->ac97->ext_id & AC97_EI_SPDIF)
3080 			kctl->id.index++;
3081 		if (trident->ac97_sec && (trident->ac97_sec->ext_id & AC97_EI_SPDIF))
3082 			kctl->id.index++;
3083 		idx = kctl->id.index;
3084 		if ((err = snd_ctl_add(card, kctl)) < 0)
3085 			goto __out;
3086 		kctl->put(kctl, uctl);
3087 
3088 		kctl = snd_ctl_new1(&snd_trident_spdif_default, trident);
3089 		if (kctl == NULL) {
3090 			err = -ENOMEM;
3091 			goto __out;
3092 		}
3093 		kctl->id.index = idx;
3094 		kctl->id.device = pcm_spdif_device;
3095 		if ((err = snd_ctl_add(card, kctl)) < 0)
3096 			goto __out;
3097 
3098 		kctl = snd_ctl_new1(&snd_trident_spdif_mask, trident);
3099 		if (kctl == NULL) {
3100 			err = -ENOMEM;
3101 			goto __out;
3102 		}
3103 		kctl->id.index = idx;
3104 		kctl->id.device = pcm_spdif_device;
3105 		if ((err = snd_ctl_add(card, kctl)) < 0)
3106 			goto __out;
3107 
3108 		kctl = snd_ctl_new1(&snd_trident_spdif_stream, trident);
3109 		if (kctl == NULL) {
3110 			err = -ENOMEM;
3111 			goto __out;
3112 		}
3113 		kctl->id.index = idx;
3114 		kctl->id.device = pcm_spdif_device;
3115 		if ((err = snd_ctl_add(card, kctl)) < 0)
3116 			goto __out;
3117 		trident->spdif_pcm_ctl = kctl;
3118 	}
3119 
3120 	err = 0;
3121 	goto __out;
3122 
3123  __nomem:
3124 	err = -ENOMEM;
3125 
3126  __out:
3127 	kfree(uctl);
3128 
3129 	return err;
3130 }
3131 
3132 /*
3133  * gameport interface
3134  */
3135 
3136 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
3137 
3138 static unsigned char snd_trident_gameport_read(struct gameport *gameport)
3139 {
3140 	struct snd_trident *chip = gameport_get_port_data(gameport);
3141 
3142 	if (snd_BUG_ON(!chip))
3143 		return 0;
3144 	return inb(TRID_REG(chip, GAMEPORT_LEGACY));
3145 }
3146 
3147 static void snd_trident_gameport_trigger(struct gameport *gameport)
3148 {
3149 	struct snd_trident *chip = gameport_get_port_data(gameport);
3150 
3151 	if (snd_BUG_ON(!chip))
3152 		return;
3153 	outb(0xff, TRID_REG(chip, GAMEPORT_LEGACY));
3154 }
3155 
3156 static int snd_trident_gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons)
3157 {
3158 	struct snd_trident *chip = gameport_get_port_data(gameport);
3159 	int i;
3160 
3161 	if (snd_BUG_ON(!chip))
3162 		return 0;
3163 
3164 	*buttons = (~inb(TRID_REG(chip, GAMEPORT_LEGACY)) >> 4) & 0xf;
3165 
3166 	for (i = 0; i < 4; i++) {
3167 		axes[i] = inw(TRID_REG(chip, GAMEPORT_AXES + i * 2));
3168 		if (axes[i] == 0xffff) axes[i] = -1;
3169 	}
3170 
3171         return 0;
3172 }
3173 
3174 static int snd_trident_gameport_open(struct gameport *gameport, int mode)
3175 {
3176 	struct snd_trident *chip = gameport_get_port_data(gameport);
3177 
3178 	if (snd_BUG_ON(!chip))
3179 		return 0;
3180 
3181 	switch (mode) {
3182 		case GAMEPORT_MODE_COOKED:
3183 			outb(GAMEPORT_MODE_ADC, TRID_REG(chip, GAMEPORT_GCR));
3184 			msleep(20);
3185 			return 0;
3186 		case GAMEPORT_MODE_RAW:
3187 			outb(0, TRID_REG(chip, GAMEPORT_GCR));
3188 			return 0;
3189 		default:
3190 			return -1;
3191 	}
3192 }
3193 
3194 int __devinit snd_trident_create_gameport(struct snd_trident *chip)
3195 {
3196 	struct gameport *gp;
3197 
3198 	chip->gameport = gp = gameport_allocate_port();
3199 	if (!gp) {
3200 		printk(KERN_ERR "trident: cannot allocate memory for gameport\n");
3201 		return -ENOMEM;
3202 	}
3203 
3204 	gameport_set_name(gp, "Trident 4DWave");
3205 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
3206 	gameport_set_dev_parent(gp, &chip->pci->dev);
3207 
3208 	gameport_set_port_data(gp, chip);
3209 	gp->fuzz = 64;
3210 	gp->read = snd_trident_gameport_read;
3211 	gp->trigger = snd_trident_gameport_trigger;
3212 	gp->cooked_read = snd_trident_gameport_cooked_read;
3213 	gp->open = snd_trident_gameport_open;
3214 
3215 	gameport_register_port(gp);
3216 
3217 	return 0;
3218 }
3219 
3220 static inline void snd_trident_free_gameport(struct snd_trident *chip)
3221 {
3222 	if (chip->gameport) {
3223 		gameport_unregister_port(chip->gameport);
3224 		chip->gameport = NULL;
3225 	}
3226 }
3227 #else
3228 int __devinit snd_trident_create_gameport(struct snd_trident *chip) { return -ENOSYS; }
3229 static inline void snd_trident_free_gameport(struct snd_trident *chip) { }
3230 #endif /* CONFIG_GAMEPORT */
3231 
3232 /*
3233  * delay for 1 tick
3234  */
3235 static inline void do_delay(struct snd_trident *chip)
3236 {
3237 	schedule_timeout_uninterruptible(1);
3238 }
3239 
3240 /*
3241  *  SiS reset routine
3242  */
3243 
3244 static int snd_trident_sis_reset(struct snd_trident *trident)
3245 {
3246 	unsigned long end_time;
3247 	unsigned int i;
3248 	int r;
3249 
3250 	r = trident->in_suspend ? 0 : 2;	/* count of retries */
3251       __si7018_retry:
3252 	pci_write_config_byte(trident->pci, 0x46, 0x04);	/* SOFTWARE RESET */
3253 	udelay(100);
3254 	pci_write_config_byte(trident->pci, 0x46, 0x00);
3255 	udelay(100);
3256 	/* disable AC97 GPIO interrupt */
3257 	outb(0x00, TRID_REG(trident, SI_AC97_GPIO));
3258 	/* initialize serial interface, force cold reset */
3259 	i = PCMOUT|SURROUT|CENTEROUT|LFEOUT|SECONDARY_ID|COLD_RESET;
3260 	outl(i, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3261 	udelay(1000);
3262 	/* remove cold reset */
3263 	i &= ~COLD_RESET;
3264 	outl(i, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3265 	udelay(2000);
3266 	/* wait, until the codec is ready */
3267 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3268 	do {
3269 		if ((inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_PRIMARY_READY) != 0)
3270 			goto __si7018_ok;
3271 		do_delay(trident);
3272 	} while (time_after_eq(end_time, jiffies));
3273 	snd_printk(KERN_ERR "AC'97 codec ready error [0x%x]\n", inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)));
3274 	if (r-- > 0) {
3275 		end_time = jiffies + HZ;
3276 		do {
3277 			do_delay(trident);
3278 		} while (time_after_eq(end_time, jiffies));
3279 		goto __si7018_retry;
3280 	}
3281       __si7018_ok:
3282 	/* wait for the second codec */
3283 	do {
3284 		if ((inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_SECONDARY_READY) != 0)
3285 			break;
3286 		do_delay(trident);
3287 	} while (time_after_eq(end_time, jiffies));
3288 	/* enable 64 channel mode */
3289 	outl(BANK_B_EN, TRID_REG(trident, T4D_LFO_GC_CIR));
3290 	return 0;
3291 }
3292 
3293 /*
3294  *  /proc interface
3295  */
3296 
3297 static void snd_trident_proc_read(struct snd_info_entry *entry,
3298 				  struct snd_info_buffer *buffer)
3299 {
3300 	struct snd_trident *trident = entry->private_data;
3301 	char *s;
3302 
3303 	switch (trident->device) {
3304 	case TRIDENT_DEVICE_ID_SI7018:
3305 		s = "SiS 7018 Audio";
3306 		break;
3307 	case TRIDENT_DEVICE_ID_DX:
3308 		s = "Trident 4DWave PCI DX";
3309 		break;
3310 	case TRIDENT_DEVICE_ID_NX:
3311 		s = "Trident 4DWave PCI NX";
3312 		break;
3313 	default:
3314 		s = "???";
3315 	}
3316 	snd_iprintf(buffer, "%s\n\n", s);
3317 	snd_iprintf(buffer, "Spurious IRQs    : %d\n", trident->spurious_irq_count);
3318 	snd_iprintf(buffer, "Spurious IRQ dlta: %d\n", trident->spurious_irq_max_delta);
3319 	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018)
3320 		snd_iprintf(buffer, "IEC958 Mixer Out : %s\n", trident->spdif_ctrl == 0x28 ? "on" : "off");
3321 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3322 		snd_iprintf(buffer, "Rear Speakers    : %s\n", trident->ac97_ctrl & 0x00000010 ? "on" : "off");
3323 		if (trident->tlb.entries) {
3324 			snd_iprintf(buffer,"\nVirtual Memory\n");
3325 			snd_iprintf(buffer, "Memory Maximum : %d\n", trident->tlb.memhdr->size);
3326 			snd_iprintf(buffer, "Memory Used    : %d\n", trident->tlb.memhdr->used);
3327 			snd_iprintf(buffer, "Memory Free    : %d\n", snd_util_mem_avail(trident->tlb.memhdr));
3328 		}
3329 	}
3330 }
3331 
3332 static void __devinit snd_trident_proc_init(struct snd_trident * trident)
3333 {
3334 	struct snd_info_entry *entry;
3335 	const char *s = "trident";
3336 
3337 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
3338 		s = "sis7018";
3339 	if (! snd_card_proc_new(trident->card, s, &entry))
3340 		snd_info_set_text_ops(entry, trident, snd_trident_proc_read);
3341 }
3342 
3343 static int snd_trident_dev_free(struct snd_device *device)
3344 {
3345 	struct snd_trident *trident = device->device_data;
3346 	return snd_trident_free(trident);
3347 }
3348 
3349 /*---------------------------------------------------------------------------
3350    snd_trident_tlb_alloc
3351 
3352    Description: Allocate and set up the TLB page table on 4D NX.
3353 		Each entry has 4 bytes (physical PCI address).
3354 
3355    Parameters:  trident - pointer to target device class for 4DWave.
3356 
3357    Returns:     0 or negative error code
3358 
3359   ---------------------------------------------------------------------------*/
3360 
3361 static int __devinit snd_trident_tlb_alloc(struct snd_trident *trident)
3362 {
3363 	int i;
3364 
3365 	/* TLB array must be aligned to 16kB !!! so we allocate
3366 	   32kB region and correct offset when necessary */
3367 
3368 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
3369 				2 * SNDRV_TRIDENT_MAX_PAGES * 4, &trident->tlb.buffer) < 0) {
3370 		snd_printk(KERN_ERR "trident: unable to allocate TLB buffer\n");
3371 		return -ENOMEM;
3372 	}
3373 	trident->tlb.entries = (unsigned int*)ALIGN((unsigned long)trident->tlb.buffer.area, SNDRV_TRIDENT_MAX_PAGES * 4);
3374 	trident->tlb.entries_dmaaddr = ALIGN(trident->tlb.buffer.addr, SNDRV_TRIDENT_MAX_PAGES * 4);
3375 	/* allocate shadow TLB page table (virtual addresses) */
3376 	trident->tlb.shadow_entries = vmalloc(SNDRV_TRIDENT_MAX_PAGES*sizeof(unsigned long));
3377 	if (trident->tlb.shadow_entries == NULL) {
3378 		snd_printk(KERN_ERR "trident: unable to allocate shadow TLB entries\n");
3379 		return -ENOMEM;
3380 	}
3381 	/* allocate and setup silent page and initialise TLB entries */
3382 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
3383 				SNDRV_TRIDENT_PAGE_SIZE, &trident->tlb.silent_page) < 0) {
3384 		snd_printk(KERN_ERR "trident: unable to allocate silent page\n");
3385 		return -ENOMEM;
3386 	}
3387 	memset(trident->tlb.silent_page.area, 0, SNDRV_TRIDENT_PAGE_SIZE);
3388 	for (i = 0; i < SNDRV_TRIDENT_MAX_PAGES; i++) {
3389 		trident->tlb.entries[i] = cpu_to_le32(trident->tlb.silent_page.addr & ~(SNDRV_TRIDENT_PAGE_SIZE-1));
3390 		trident->tlb.shadow_entries[i] = (unsigned long)trident->tlb.silent_page.area;
3391 	}
3392 
3393 	/* use emu memory block manager code to manage tlb page allocation */
3394 	trident->tlb.memhdr = snd_util_memhdr_new(SNDRV_TRIDENT_PAGE_SIZE * SNDRV_TRIDENT_MAX_PAGES);
3395 	if (trident->tlb.memhdr == NULL)
3396 		return -ENOMEM;
3397 
3398 	trident->tlb.memhdr->block_extra_size = sizeof(struct snd_trident_memblk_arg);
3399 	return 0;
3400 }
3401 
3402 /*
3403  * initialize 4D DX chip
3404  */
3405 
3406 static void snd_trident_stop_all_voices(struct snd_trident *trident)
3407 {
3408 	outl(0xffffffff, TRID_REG(trident, T4D_STOP_A));
3409 	outl(0xffffffff, TRID_REG(trident, T4D_STOP_B));
3410 	outl(0, TRID_REG(trident, T4D_AINTEN_A));
3411 	outl(0, TRID_REG(trident, T4D_AINTEN_B));
3412 }
3413 
3414 static int snd_trident_4d_dx_init(struct snd_trident *trident)
3415 {
3416 	struct pci_dev *pci = trident->pci;
3417 	unsigned long end_time;
3418 
3419 	/* reset the legacy configuration and whole audio/wavetable block */
3420 	pci_write_config_dword(pci, 0x40, 0);	/* DDMA */
3421 	pci_write_config_byte(pci, 0x44, 0);	/* ports */
3422 	pci_write_config_byte(pci, 0x45, 0);	/* Legacy DMA */
3423 	pci_write_config_byte(pci, 0x46, 4); /* reset */
3424 	udelay(100);
3425 	pci_write_config_byte(pci, 0x46, 0); /* release reset */
3426 	udelay(100);
3427 
3428 	/* warm reset of the AC'97 codec */
3429 	outl(0x00000001, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3430 	udelay(100);
3431 	outl(0x00000000, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3432 	/* DAC on, disable SB IRQ and try to force ADC valid signal */
3433 	trident->ac97_ctrl = 0x0000004a;
3434 	outl(trident->ac97_ctrl, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3435 	/* wait, until the codec is ready */
3436 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3437 	do {
3438 		if ((inl(TRID_REG(trident, DX_ACR2_AC97_COM_STAT)) & 0x0010) != 0)
3439 			goto __dx_ok;
3440 		do_delay(trident);
3441 	} while (time_after_eq(end_time, jiffies));
3442 	snd_printk(KERN_ERR "AC'97 codec ready error\n");
3443 	return -EIO;
3444 
3445  __dx_ok:
3446 	snd_trident_stop_all_voices(trident);
3447 
3448 	return 0;
3449 }
3450 
3451 /*
3452  * initialize 4D NX chip
3453  */
3454 static int snd_trident_4d_nx_init(struct snd_trident *trident)
3455 {
3456 	struct pci_dev *pci = trident->pci;
3457 	unsigned long end_time;
3458 
3459 	/* reset the legacy configuration and whole audio/wavetable block */
3460 	pci_write_config_dword(pci, 0x40, 0);	/* DDMA */
3461 	pci_write_config_byte(pci, 0x44, 0);	/* ports */
3462 	pci_write_config_byte(pci, 0x45, 0);	/* Legacy DMA */
3463 
3464 	pci_write_config_byte(pci, 0x46, 1); /* reset */
3465 	udelay(100);
3466 	pci_write_config_byte(pci, 0x46, 0); /* release reset */
3467 	udelay(100);
3468 
3469 	/* warm reset of the AC'97 codec */
3470 	outl(0x00000001, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3471 	udelay(100);
3472 	outl(0x00000000, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3473 	/* wait, until the codec is ready */
3474 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3475 	do {
3476 		if ((inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT)) & 0x0008) != 0)
3477 			goto __nx_ok;
3478 		do_delay(trident);
3479 	} while (time_after_eq(end_time, jiffies));
3480 	snd_printk(KERN_ERR "AC'97 codec ready error [0x%x]\n", inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT)));
3481 	return -EIO;
3482 
3483  __nx_ok:
3484 	/* DAC on */
3485 	trident->ac97_ctrl = 0x00000002;
3486 	outl(trident->ac97_ctrl, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3487 	/* disable SB IRQ */
3488 	outl(NX_SB_IRQ_DISABLE, TRID_REG(trident, T4D_MISCINT));
3489 
3490 	snd_trident_stop_all_voices(trident);
3491 
3492 	if (trident->tlb.entries != NULL) {
3493 		unsigned int i;
3494 		/* enable virtual addressing via TLB */
3495 		i = trident->tlb.entries_dmaaddr;
3496 		i |= 0x00000001;
3497 		outl(i, TRID_REG(trident, NX_TLBC));
3498 	} else {
3499 		outl(0, TRID_REG(trident, NX_TLBC));
3500 	}
3501 	/* initialize S/PDIF */
3502 	outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
3503 	outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
3504 
3505 	return 0;
3506 }
3507 
3508 /*
3509  * initialize sis7018 chip
3510  */
3511 static int snd_trident_sis_init(struct snd_trident *trident)
3512 {
3513 	int err;
3514 
3515 	if ((err = snd_trident_sis_reset(trident)) < 0)
3516 		return err;
3517 
3518 	snd_trident_stop_all_voices(trident);
3519 
3520 	/* initialize S/PDIF */
3521 	outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
3522 
3523 	return 0;
3524 }
3525 
3526 /*---------------------------------------------------------------------------
3527    snd_trident_create
3528 
3529    Description: This routine will create the device specific class for
3530                 the 4DWave card. It will also perform basic initialization.
3531 
3532    Parameters:  card  - which card to create
3533                 pci   - interface to PCI bus resource info
3534                 dma1ptr - playback dma buffer
3535                 dma2ptr - capture dma buffer
3536                 irqptr  -  interrupt resource info
3537 
3538    Returns:     4DWave device class private data
3539 
3540   ---------------------------------------------------------------------------*/
3541 
3542 int __devinit snd_trident_create(struct snd_card *card,
3543 		       struct pci_dev *pci,
3544 		       int pcm_streams,
3545 		       int pcm_spdif_device,
3546 		       int max_wavetable_size,
3547 		       struct snd_trident ** rtrident)
3548 {
3549 	struct snd_trident *trident;
3550 	int i, err;
3551 	struct snd_trident_voice *voice;
3552 	struct snd_trident_pcm_mixer *tmix;
3553 	static struct snd_device_ops ops = {
3554 		.dev_free =	snd_trident_dev_free,
3555 	};
3556 
3557 	*rtrident = NULL;
3558 
3559 	/* enable PCI device */
3560 	if ((err = pci_enable_device(pci)) < 0)
3561 		return err;
3562 	/* check, if we can restrict PCI DMA transfers to 30 bits */
3563 	if (pci_set_dma_mask(pci, DMA_BIT_MASK(30)) < 0 ||
3564 	    pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(30)) < 0) {
3565 		snd_printk(KERN_ERR "architecture does not support 30bit PCI busmaster DMA\n");
3566 		pci_disable_device(pci);
3567 		return -ENXIO;
3568 	}
3569 
3570 	trident = kzalloc(sizeof(*trident), GFP_KERNEL);
3571 	if (trident == NULL) {
3572 		pci_disable_device(pci);
3573 		return -ENOMEM;
3574 	}
3575 	trident->device = (pci->vendor << 16) | pci->device;
3576 	trident->card = card;
3577 	trident->pci = pci;
3578 	spin_lock_init(&trident->reg_lock);
3579 	spin_lock_init(&trident->event_lock);
3580 	spin_lock_init(&trident->voice_alloc);
3581 	if (pcm_streams < 1)
3582 		pcm_streams = 1;
3583 	if (pcm_streams > 32)
3584 		pcm_streams = 32;
3585 	trident->ChanPCM = pcm_streams;
3586 	if (max_wavetable_size < 0 )
3587 		max_wavetable_size = 0;
3588 	trident->synth.max_size = max_wavetable_size * 1024;
3589 	trident->irq = -1;
3590 
3591 	trident->midi_port = TRID_REG(trident, T4D_MPU401_BASE);
3592 	pci_set_master(pci);
3593 
3594 	if ((err = pci_request_regions(pci, "Trident Audio")) < 0) {
3595 		kfree(trident);
3596 		pci_disable_device(pci);
3597 		return err;
3598 	}
3599 	trident->port = pci_resource_start(pci, 0);
3600 
3601 	if (request_irq(pci->irq, snd_trident_interrupt, IRQF_SHARED,
3602 			KBUILD_MODNAME, trident)) {
3603 		snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
3604 		snd_trident_free(trident);
3605 		return -EBUSY;
3606 	}
3607 	trident->irq = pci->irq;
3608 
3609 	/* allocate 16k-aligned TLB for NX cards */
3610 	trident->tlb.entries = NULL;
3611 	trident->tlb.buffer.area = NULL;
3612 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3613 		if ((err = snd_trident_tlb_alloc(trident)) < 0) {
3614 			snd_trident_free(trident);
3615 			return err;
3616 		}
3617 	}
3618 
3619 	trident->spdif_bits = trident->spdif_pcm_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
3620 
3621 	/* initialize chip */
3622 	switch (trident->device) {
3623 	case TRIDENT_DEVICE_ID_DX:
3624 		err = snd_trident_4d_dx_init(trident);
3625 		break;
3626 	case TRIDENT_DEVICE_ID_NX:
3627 		err = snd_trident_4d_nx_init(trident);
3628 		break;
3629 	case TRIDENT_DEVICE_ID_SI7018:
3630 		err = snd_trident_sis_init(trident);
3631 		break;
3632 	default:
3633 		snd_BUG();
3634 		break;
3635 	}
3636 	if (err < 0) {
3637 		snd_trident_free(trident);
3638 		return err;
3639 	}
3640 
3641 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, trident, &ops)) < 0) {
3642 		snd_trident_free(trident);
3643 		return err;
3644 	}
3645 
3646 	if ((err = snd_trident_mixer(trident, pcm_spdif_device)) < 0)
3647 		return err;
3648 
3649 	/* initialise synth voices */
3650 	for (i = 0; i < 64; i++) {
3651 		voice = &trident->synth.voices[i];
3652 		voice->number = i;
3653 		voice->trident = trident;
3654 	}
3655 	/* initialize pcm mixer entries */
3656 	for (i = 0; i < 32; i++) {
3657 		tmix = &trident->pcm_mixer[i];
3658 		tmix->vol = T4D_DEFAULT_PCM_VOL;
3659 		tmix->pan = T4D_DEFAULT_PCM_PAN;
3660 		tmix->rvol = T4D_DEFAULT_PCM_RVOL;
3661 		tmix->cvol = T4D_DEFAULT_PCM_CVOL;
3662 	}
3663 
3664 	snd_trident_enable_eso(trident);
3665 
3666 	snd_trident_proc_init(trident);
3667 	snd_card_set_dev(card, &pci->dev);
3668 	*rtrident = trident;
3669 	return 0;
3670 }
3671 
3672 /*---------------------------------------------------------------------------
3673    snd_trident_free
3674 
3675    Description: This routine will free the device specific class for
3676                 the 4DWave card.
3677 
3678    Parameters:  trident  - device specific private data for 4DWave card
3679 
3680    Returns:     None.
3681 
3682   ---------------------------------------------------------------------------*/
3683 
3684 static int snd_trident_free(struct snd_trident *trident)
3685 {
3686 	snd_trident_free_gameport(trident);
3687 	snd_trident_disable_eso(trident);
3688 	// Disable S/PDIF out
3689 	if (trident->device == TRIDENT_DEVICE_ID_NX)
3690 		outb(0x00, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
3691 	else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
3692 		outl(0, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3693 	}
3694 	if (trident->irq >= 0)
3695 		free_irq(trident->irq, trident);
3696 	if (trident->tlb.buffer.area) {
3697 		outl(0, TRID_REG(trident, NX_TLBC));
3698 		if (trident->tlb.memhdr)
3699 			snd_util_memhdr_free(trident->tlb.memhdr);
3700 		if (trident->tlb.silent_page.area)
3701 			snd_dma_free_pages(&trident->tlb.silent_page);
3702 		vfree(trident->tlb.shadow_entries);
3703 		snd_dma_free_pages(&trident->tlb.buffer);
3704 	}
3705 	pci_release_regions(trident->pci);
3706 	pci_disable_device(trident->pci);
3707 	kfree(trident);
3708 	return 0;
3709 }
3710 
3711 /*---------------------------------------------------------------------------
3712    snd_trident_interrupt
3713 
3714    Description: ISR for Trident 4DWave device
3715 
3716    Parameters:  trident  - device specific private data for 4DWave card
3717 
3718    Problems:    It seems that Trident chips generates interrupts more than
3719                 one time in special cases. The spurious interrupts are
3720                 detected via sample timer (T4D_STIMER) and computing
3721                 corresponding delta value. The limits are detected with
3722                 the method try & fail so it is possible that it won't
3723                 work on all computers. [jaroslav]
3724 
3725    Returns:     None.
3726 
3727   ---------------------------------------------------------------------------*/
3728 
3729 static irqreturn_t snd_trident_interrupt(int irq, void *dev_id)
3730 {
3731 	struct snd_trident *trident = dev_id;
3732 	unsigned int audio_int, chn_int, stimer, channel, mask, tmp;
3733 	int delta;
3734 	struct snd_trident_voice *voice;
3735 
3736 	audio_int = inl(TRID_REG(trident, T4D_MISCINT));
3737 	if ((audio_int & (ADDRESS_IRQ|MPU401_IRQ)) == 0)
3738 		return IRQ_NONE;
3739 	if (audio_int & ADDRESS_IRQ) {
3740 		// get interrupt status for all channels
3741 		spin_lock(&trident->reg_lock);
3742 		stimer = inl(TRID_REG(trident, T4D_STIMER)) & 0x00ffffff;
3743 		chn_int = inl(TRID_REG(trident, T4D_AINT_A));
3744 		if (chn_int == 0)
3745 			goto __skip1;
3746 		outl(chn_int, TRID_REG(trident, T4D_AINT_A));	/* ack */
3747 	      __skip1:
3748 		chn_int = inl(TRID_REG(trident, T4D_AINT_B));
3749 		if (chn_int == 0)
3750 			goto __skip2;
3751 		for (channel = 63; channel >= 32; channel--) {
3752 			mask = 1 << (channel&0x1f);
3753 			if ((chn_int & mask) == 0)
3754 				continue;
3755 			voice = &trident->synth.voices[channel];
3756 			if (!voice->pcm || voice->substream == NULL) {
3757 				outl(mask, TRID_REG(trident, T4D_STOP_B));
3758 				continue;
3759 			}
3760 			delta = (int)stimer - (int)voice->stimer;
3761 			if (delta < 0)
3762 				delta = -delta;
3763 			if ((unsigned int)delta < voice->spurious_threshold) {
3764 				/* do some statistics here */
3765 				trident->spurious_irq_count++;
3766 				if (trident->spurious_irq_max_delta < (unsigned int)delta)
3767 					trident->spurious_irq_max_delta = delta;
3768 				continue;
3769 			}
3770 			voice->stimer = stimer;
3771 			if (voice->isync) {
3772 				if (!voice->isync3) {
3773 					tmp = inw(TRID_REG(trident, T4D_SBBL_SBCL));
3774 					if (trident->bDMAStart & 0x40)
3775 						tmp >>= 1;
3776 					if (tmp > 0)
3777 						tmp = voice->isync_max - tmp;
3778 				} else {
3779 					tmp = inl(TRID_REG(trident, NX_SPCTRL_SPCSO)) & 0x00ffffff;
3780 				}
3781 				if (tmp < voice->isync_mark) {
3782 					if (tmp > 0x10)
3783 						tmp = voice->isync_ESO - 7;
3784 					else
3785 						tmp = voice->isync_ESO + 2;
3786 					/* update ESO for IRQ voice to preserve sync */
3787 					snd_trident_stop_voice(trident, voice->number);
3788 					snd_trident_write_eso_reg(trident, voice, tmp);
3789 					snd_trident_start_voice(trident, voice->number);
3790 				}
3791 			} else if (voice->isync2) {
3792 				voice->isync2 = 0;
3793 				/* write original ESO and update CSO for IRQ voice to preserve sync */
3794 				snd_trident_stop_voice(trident, voice->number);
3795 				snd_trident_write_cso_reg(trident, voice, voice->isync_mark);
3796 				snd_trident_write_eso_reg(trident, voice, voice->ESO);
3797 				snd_trident_start_voice(trident, voice->number);
3798 			}
3799 #if 0
3800 			if (voice->extra) {
3801 				/* update CSO for extra voice to preserve sync */
3802 				snd_trident_stop_voice(trident, voice->extra->number);
3803 				snd_trident_write_cso_reg(trident, voice->extra, 0);
3804 				snd_trident_start_voice(trident, voice->extra->number);
3805 			}
3806 #endif
3807 			spin_unlock(&trident->reg_lock);
3808 			snd_pcm_period_elapsed(voice->substream);
3809 			spin_lock(&trident->reg_lock);
3810 		}
3811 		outl(chn_int, TRID_REG(trident, T4D_AINT_B));	/* ack */
3812 	      __skip2:
3813 		spin_unlock(&trident->reg_lock);
3814 	}
3815 	if (audio_int & MPU401_IRQ) {
3816 		if (trident->rmidi) {
3817 			snd_mpu401_uart_interrupt(irq, trident->rmidi->private_data);
3818 		} else {
3819 			inb(TRID_REG(trident, T4D_MPUR0));
3820 		}
3821 	}
3822 	// outl((ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW), TRID_REG(trident, T4D_MISCINT));
3823 	return IRQ_HANDLED;
3824 }
3825 
3826 struct snd_trident_voice *snd_trident_alloc_voice(struct snd_trident * trident, int type, int client, int port)
3827 {
3828 	struct snd_trident_voice *pvoice;
3829 	unsigned long flags;
3830 	int idx;
3831 
3832 	spin_lock_irqsave(&trident->voice_alloc, flags);
3833 	if (type == SNDRV_TRIDENT_VOICE_TYPE_PCM) {
3834 		idx = snd_trident_allocate_pcm_channel(trident);
3835 		if(idx < 0) {
3836 			spin_unlock_irqrestore(&trident->voice_alloc, flags);
3837 			return NULL;
3838 		}
3839 		pvoice = &trident->synth.voices[idx];
3840 		pvoice->use = 1;
3841 		pvoice->pcm = 1;
3842 		pvoice->capture = 0;
3843 		pvoice->spdif = 0;
3844 		pvoice->memblk = NULL;
3845 		pvoice->substream = NULL;
3846 		spin_unlock_irqrestore(&trident->voice_alloc, flags);
3847 		return pvoice;
3848 	}
3849 	if (type == SNDRV_TRIDENT_VOICE_TYPE_SYNTH) {
3850 		idx = snd_trident_allocate_synth_channel(trident);
3851 		if(idx < 0) {
3852 			spin_unlock_irqrestore(&trident->voice_alloc, flags);
3853 			return NULL;
3854 		}
3855 		pvoice = &trident->synth.voices[idx];
3856 		pvoice->use = 1;
3857 		pvoice->synth = 1;
3858 		pvoice->client = client;
3859 		pvoice->port = port;
3860 		pvoice->memblk = NULL;
3861 		spin_unlock_irqrestore(&trident->voice_alloc, flags);
3862 		return pvoice;
3863 	}
3864 	if (type == SNDRV_TRIDENT_VOICE_TYPE_MIDI) {
3865 	}
3866 	spin_unlock_irqrestore(&trident->voice_alloc, flags);
3867 	return NULL;
3868 }
3869 
3870 EXPORT_SYMBOL(snd_trident_alloc_voice);
3871 
3872 void snd_trident_free_voice(struct snd_trident * trident, struct snd_trident_voice *voice)
3873 {
3874 	unsigned long flags;
3875 	void (*private_free)(struct snd_trident_voice *);
3876 	void *private_data;
3877 
3878 	if (voice == NULL || !voice->use)
3879 		return;
3880 	snd_trident_clear_voices(trident, voice->number, voice->number);
3881 	spin_lock_irqsave(&trident->voice_alloc, flags);
3882 	private_free = voice->private_free;
3883 	private_data = voice->private_data;
3884 	voice->private_free = NULL;
3885 	voice->private_data = NULL;
3886 	if (voice->pcm)
3887 		snd_trident_free_pcm_channel(trident, voice->number);
3888 	if (voice->synth)
3889 		snd_trident_free_synth_channel(trident, voice->number);
3890 	voice->use = voice->pcm = voice->synth = voice->midi = 0;
3891 	voice->capture = voice->spdif = 0;
3892 	voice->sample_ops = NULL;
3893 	voice->substream = NULL;
3894 	voice->extra = NULL;
3895 	spin_unlock_irqrestore(&trident->voice_alloc, flags);
3896 	if (private_free)
3897 		private_free(voice);
3898 }
3899 
3900 EXPORT_SYMBOL(snd_trident_free_voice);
3901 
3902 static void snd_trident_clear_voices(struct snd_trident * trident, unsigned short v_min, unsigned short v_max)
3903 {
3904 	unsigned int i, val, mask[2] = { 0, 0 };
3905 
3906 	if (snd_BUG_ON(v_min > 63 || v_max > 63))
3907 		return;
3908 	for (i = v_min; i <= v_max; i++)
3909 		mask[i >> 5] |= 1 << (i & 0x1f);
3910 	if (mask[0]) {
3911 		outl(mask[0], TRID_REG(trident, T4D_STOP_A));
3912 		val = inl(TRID_REG(trident, T4D_AINTEN_A));
3913 		outl(val & ~mask[0], TRID_REG(trident, T4D_AINTEN_A));
3914 	}
3915 	if (mask[1]) {
3916 		outl(mask[1], TRID_REG(trident, T4D_STOP_B));
3917 		val = inl(TRID_REG(trident, T4D_AINTEN_B));
3918 		outl(val & ~mask[1], TRID_REG(trident, T4D_AINTEN_B));
3919 	}
3920 }
3921 
3922 #ifdef CONFIG_PM
3923 int snd_trident_suspend(struct pci_dev *pci, pm_message_t state)
3924 {
3925 	struct snd_card *card = pci_get_drvdata(pci);
3926 	struct snd_trident *trident = card->private_data;
3927 
3928 	trident->in_suspend = 1;
3929 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
3930 	snd_pcm_suspend_all(trident->pcm);
3931 	snd_pcm_suspend_all(trident->foldback);
3932 	snd_pcm_suspend_all(trident->spdif);
3933 
3934 	snd_ac97_suspend(trident->ac97);
3935 	snd_ac97_suspend(trident->ac97_sec);
3936 
3937 	pci_disable_device(pci);
3938 	pci_save_state(pci);
3939 	pci_set_power_state(pci, pci_choose_state(pci, state));
3940 	return 0;
3941 }
3942 
3943 int snd_trident_resume(struct pci_dev *pci)
3944 {
3945 	struct snd_card *card = pci_get_drvdata(pci);
3946 	struct snd_trident *trident = card->private_data;
3947 
3948 	pci_set_power_state(pci, PCI_D0);
3949 	pci_restore_state(pci);
3950 	if (pci_enable_device(pci) < 0) {
3951 		printk(KERN_ERR "trident: pci_enable_device failed, "
3952 		       "disabling device\n");
3953 		snd_card_disconnect(card);
3954 		return -EIO;
3955 	}
3956 	pci_set_master(pci);
3957 
3958 	switch (trident->device) {
3959 	case TRIDENT_DEVICE_ID_DX:
3960 		snd_trident_4d_dx_init(trident);
3961 		break;
3962 	case TRIDENT_DEVICE_ID_NX:
3963 		snd_trident_4d_nx_init(trident);
3964 		break;
3965 	case TRIDENT_DEVICE_ID_SI7018:
3966 		snd_trident_sis_init(trident);
3967 		break;
3968 	}
3969 
3970 	snd_ac97_resume(trident->ac97);
3971 	snd_ac97_resume(trident->ac97_sec);
3972 
3973 	/* restore some registers */
3974 	outl(trident->musicvol_wavevol, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3975 
3976 	snd_trident_enable_eso(trident);
3977 
3978 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
3979 	trident->in_suspend = 0;
3980 	return 0;
3981 }
3982 #endif /* CONFIG_PM */
3983