xref: /openbmc/linux/sound/pci/trident/trident_main.c (revision 32c2e6dd)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Maintained by Jaroslav Kysela <perex@perex.cz>
4  *  Originated by audio@tridentmicro.com
5  *  Fri Feb 19 15:55:28 MST 1999
6  *  Routines for control of Trident 4DWave (DX and NX) chip
7  *
8  *  BUGS:
9  *
10  *  TODO:
11  *    ---
12  *
13  *  SiS7018 S/PDIF support by Thomas Winischhofer <thomas@winischhofer.net>
14  */
15 
16 #include <linux/delay.h>
17 #include <linux/init.h>
18 #include <linux/interrupt.h>
19 #include <linux/pci.h>
20 #include <linux/slab.h>
21 #include <linux/vmalloc.h>
22 #include <linux/gameport.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/export.h>
25 #include <linux/io.h>
26 
27 #include <sound/core.h>
28 #include <sound/info.h>
29 #include <sound/control.h>
30 #include <sound/tlv.h>
31 #include "trident.h"
32 #include <sound/asoundef.h>
33 
34 static int snd_trident_pcm_mixer_build(struct snd_trident *trident,
35 				       struct snd_trident_voice * voice,
36 				       struct snd_pcm_substream *substream);
37 static int snd_trident_pcm_mixer_free(struct snd_trident *trident,
38 				      struct snd_trident_voice * voice,
39 				      struct snd_pcm_substream *substream);
40 static irqreturn_t snd_trident_interrupt(int irq, void *dev_id);
41 static int snd_trident_sis_reset(struct snd_trident *trident);
42 
43 static void snd_trident_clear_voices(struct snd_trident * trident,
44 				     unsigned short v_min, unsigned short v_max);
45 static int snd_trident_free(struct snd_trident *trident);
46 
47 /*
48  *  common I/O routines
49  */
50 
51 
52 #if 0
53 static void snd_trident_print_voice_regs(struct snd_trident *trident, int voice)
54 {
55 	unsigned int val, tmp;
56 
57 	dev_dbg(trident->card->dev, "Trident voice %i:\n", voice);
58 	outb(voice, TRID_REG(trident, T4D_LFO_GC_CIR));
59 	val = inl(TRID_REG(trident, CH_LBA));
60 	dev_dbg(trident->card->dev, "LBA: 0x%x\n", val);
61 	val = inl(TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
62 	dev_dbg(trident->card->dev, "GVSel: %i\n", val >> 31);
63 	dev_dbg(trident->card->dev, "Pan: 0x%x\n", (val >> 24) & 0x7f);
64 	dev_dbg(trident->card->dev, "Vol: 0x%x\n", (val >> 16) & 0xff);
65 	dev_dbg(trident->card->dev, "CTRL: 0x%x\n", (val >> 12) & 0x0f);
66 	dev_dbg(trident->card->dev, "EC: 0x%x\n", val & 0x0fff);
67 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
68 		val = inl(TRID_REG(trident, CH_DX_CSO_ALPHA_FMS));
69 		dev_dbg(trident->card->dev, "CSO: 0x%x\n", val >> 16);
70 		dev_dbg(trident->card->dev, "Alpha: 0x%x\n", (val >> 4) & 0x0fff);
71 		dev_dbg(trident->card->dev, "FMS: 0x%x\n", val & 0x0f);
72 		val = inl(TRID_REG(trident, CH_DX_ESO_DELTA));
73 		dev_dbg(trident->card->dev, "ESO: 0x%x\n", val >> 16);
74 		dev_dbg(trident->card->dev, "Delta: 0x%x\n", val & 0xffff);
75 		val = inl(TRID_REG(trident, CH_DX_FMC_RVOL_CVOL));
76 	} else {		// TRIDENT_DEVICE_ID_NX
77 		val = inl(TRID_REG(trident, CH_NX_DELTA_CSO));
78 		tmp = (val >> 24) & 0xff;
79 		dev_dbg(trident->card->dev, "CSO: 0x%x\n", val & 0x00ffffff);
80 		val = inl(TRID_REG(trident, CH_NX_DELTA_ESO));
81 		tmp |= (val >> 16) & 0xff00;
82 		dev_dbg(trident->card->dev, "Delta: 0x%x\n", tmp);
83 		dev_dbg(trident->card->dev, "ESO: 0x%x\n", val & 0x00ffffff);
84 		val = inl(TRID_REG(trident, CH_NX_ALPHA_FMS_FMC_RVOL_CVOL));
85 		dev_dbg(trident->card->dev, "Alpha: 0x%x\n", val >> 20);
86 		dev_dbg(trident->card->dev, "FMS: 0x%x\n", (val >> 16) & 0x0f);
87 	}
88 	dev_dbg(trident->card->dev, "FMC: 0x%x\n", (val >> 14) & 3);
89 	dev_dbg(trident->card->dev, "RVol: 0x%x\n", (val >> 7) & 0x7f);
90 	dev_dbg(trident->card->dev, "CVol: 0x%x\n", val & 0x7f);
91 }
92 #endif
93 
94 /*---------------------------------------------------------------------------
95    unsigned short snd_trident_codec_read(struct snd_ac97 *ac97, unsigned short reg)
96 
97    Description: This routine will do all of the reading from the external
98                 CODEC (AC97).
99 
100    Parameters:  ac97 - ac97 codec structure
101                 reg - CODEC register index, from AC97 Hal.
102 
103    returns:     16 bit value read from the AC97.
104 
105   ---------------------------------------------------------------------------*/
106 static unsigned short snd_trident_codec_read(struct snd_ac97 *ac97, unsigned short reg)
107 {
108 	unsigned int data = 0, treg;
109 	unsigned short count = 0xffff;
110 	unsigned long flags;
111 	struct snd_trident *trident = ac97->private_data;
112 
113 	spin_lock_irqsave(&trident->reg_lock, flags);
114 	if (trident->device == TRIDENT_DEVICE_ID_DX) {
115 		data = (DX_AC97_BUSY_READ | (reg & 0x000000ff));
116 		outl(data, TRID_REG(trident, DX_ACR1_AC97_R));
117 		do {
118 			data = inl(TRID_REG(trident, DX_ACR1_AC97_R));
119 			if ((data & DX_AC97_BUSY_READ) == 0)
120 				break;
121 		} while (--count);
122 	} else if (trident->device == TRIDENT_DEVICE_ID_NX) {
123 		data = (NX_AC97_BUSY_READ | (reg & 0x000000ff));
124 		treg = ac97->num == 0 ? NX_ACR2_AC97_R_PRIMARY : NX_ACR3_AC97_R_SECONDARY;
125 		outl(data, TRID_REG(trident, treg));
126 		do {
127 			data = inl(TRID_REG(trident, treg));
128 			if ((data & 0x00000C00) == 0)
129 				break;
130 		} while (--count);
131 	} else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
132 		data = SI_AC97_BUSY_READ | SI_AC97_AUDIO_BUSY | (reg & 0x000000ff);
133 		if (ac97->num == 1)
134 			data |= SI_AC97_SECONDARY;
135 		outl(data, TRID_REG(trident, SI_AC97_READ));
136 		do {
137 			data = inl(TRID_REG(trident, SI_AC97_READ));
138 			if ((data & (SI_AC97_BUSY_READ)) == 0)
139 				break;
140 		} while (--count);
141 	}
142 
143 	if (count == 0 && !trident->ac97_detect) {
144 		dev_err(trident->card->dev,
145 			"ac97 codec read TIMEOUT [0x%x/0x%x]!!!\n",
146 			   reg, data);
147 		data = 0;
148 	}
149 
150 	spin_unlock_irqrestore(&trident->reg_lock, flags);
151 	return ((unsigned short) (data >> 16));
152 }
153 
154 /*---------------------------------------------------------------------------
155    void snd_trident_codec_write(struct snd_ac97 *ac97, unsigned short reg,
156    unsigned short wdata)
157 
158    Description: This routine will do all of the writing to the external
159                 CODEC (AC97).
160 
161    Parameters:	ac97 - ac97 codec structure
162    	        reg - CODEC register index, from AC97 Hal.
163                 data  - Lower 16 bits are the data to write to CODEC.
164 
165    returns:     TRUE if everything went ok, else FALSE.
166 
167   ---------------------------------------------------------------------------*/
168 static void snd_trident_codec_write(struct snd_ac97 *ac97, unsigned short reg,
169 				    unsigned short wdata)
170 {
171 	unsigned int address, data;
172 	unsigned short count = 0xffff;
173 	unsigned long flags;
174 	struct snd_trident *trident = ac97->private_data;
175 
176 	data = ((unsigned long) wdata) << 16;
177 
178 	spin_lock_irqsave(&trident->reg_lock, flags);
179 	if (trident->device == TRIDENT_DEVICE_ID_DX) {
180 		address = DX_ACR0_AC97_W;
181 
182 		/* read AC-97 write register status */
183 		do {
184 			if ((inw(TRID_REG(trident, address)) & DX_AC97_BUSY_WRITE) == 0)
185 				break;
186 		} while (--count);
187 
188 		data |= (DX_AC97_BUSY_WRITE | (reg & 0x000000ff));
189 	} else if (trident->device == TRIDENT_DEVICE_ID_NX) {
190 		address = NX_ACR1_AC97_W;
191 
192 		/* read AC-97 write register status */
193 		do {
194 			if ((inw(TRID_REG(trident, address)) & NX_AC97_BUSY_WRITE) == 0)
195 				break;
196 		} while (--count);
197 
198 		data |= (NX_AC97_BUSY_WRITE | (ac97->num << 8) | (reg & 0x000000ff));
199 	} else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
200 		address = SI_AC97_WRITE;
201 
202 		/* read AC-97 write register status */
203 		do {
204 			if ((inw(TRID_REG(trident, address)) & (SI_AC97_BUSY_WRITE)) == 0)
205 				break;
206 		} while (--count);
207 
208 		data |= SI_AC97_BUSY_WRITE | SI_AC97_AUDIO_BUSY | (reg & 0x000000ff);
209 		if (ac97->num == 1)
210 			data |= SI_AC97_SECONDARY;
211 	} else {
212 		address = 0;	/* keep GCC happy */
213 		count = 0;	/* return */
214 	}
215 
216 	if (count == 0) {
217 		spin_unlock_irqrestore(&trident->reg_lock, flags);
218 		return;
219 	}
220 	outl(data, TRID_REG(trident, address));
221 	spin_unlock_irqrestore(&trident->reg_lock, flags);
222 }
223 
224 /*---------------------------------------------------------------------------
225    void snd_trident_enable_eso(struct snd_trident *trident)
226 
227    Description: This routine will enable end of loop interrupts.
228                 End of loop interrupts will occur when a running
229                 channel reaches ESO.
230                 Also enables middle of loop interrupts.
231 
232    Parameters:  trident - pointer to target device class for 4DWave.
233 
234   ---------------------------------------------------------------------------*/
235 
236 static void snd_trident_enable_eso(struct snd_trident * trident)
237 {
238 	unsigned int val;
239 
240 	val = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
241 	val |= ENDLP_IE;
242 	val |= MIDLP_IE;
243 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
244 		val |= BANK_B_EN;
245 	outl(val, TRID_REG(trident, T4D_LFO_GC_CIR));
246 }
247 
248 /*---------------------------------------------------------------------------
249    void snd_trident_disable_eso(struct snd_trident *trident)
250 
251    Description: This routine will disable end of loop interrupts.
252                 End of loop interrupts will occur when a running
253                 channel reaches ESO.
254                 Also disables middle of loop interrupts.
255 
256    Parameters:
257                 trident - pointer to target device class for 4DWave.
258 
259    returns:     TRUE if everything went ok, else FALSE.
260 
261   ---------------------------------------------------------------------------*/
262 
263 static void snd_trident_disable_eso(struct snd_trident * trident)
264 {
265 	unsigned int tmp;
266 
267 	tmp = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
268 	tmp &= ~ENDLP_IE;
269 	tmp &= ~MIDLP_IE;
270 	outl(tmp, TRID_REG(trident, T4D_LFO_GC_CIR));
271 }
272 
273 /*---------------------------------------------------------------------------
274    void snd_trident_start_voice(struct snd_trident * trident, unsigned int voice)
275 
276     Description: Start a voice, any channel 0 thru 63.
277                  This routine automatically handles the fact that there are
278                  more than 32 channels available.
279 
280     Parameters : voice - Voice number 0 thru n.
281                  trident - pointer to target device class for 4DWave.
282 
283     Return Value: None.
284 
285   ---------------------------------------------------------------------------*/
286 
287 void snd_trident_start_voice(struct snd_trident * trident, unsigned int voice)
288 {
289 	unsigned int mask = 1 << (voice & 0x1f);
290 	unsigned int reg = (voice & 0x20) ? T4D_START_B : T4D_START_A;
291 
292 	outl(mask, TRID_REG(trident, reg));
293 }
294 
295 EXPORT_SYMBOL(snd_trident_start_voice);
296 
297 /*---------------------------------------------------------------------------
298    void snd_trident_stop_voice(struct snd_trident * trident, unsigned int voice)
299 
300     Description: Stop a voice, any channel 0 thru 63.
301                  This routine automatically handles the fact that there are
302                  more than 32 channels available.
303 
304     Parameters : voice - Voice number 0 thru n.
305                  trident - pointer to target device class for 4DWave.
306 
307     Return Value: None.
308 
309   ---------------------------------------------------------------------------*/
310 
311 void snd_trident_stop_voice(struct snd_trident * trident, unsigned int voice)
312 {
313 	unsigned int mask = 1 << (voice & 0x1f);
314 	unsigned int reg = (voice & 0x20) ? T4D_STOP_B : T4D_STOP_A;
315 
316 	outl(mask, TRID_REG(trident, reg));
317 }
318 
319 EXPORT_SYMBOL(snd_trident_stop_voice);
320 
321 /*---------------------------------------------------------------------------
322     int snd_trident_allocate_pcm_channel(struct snd_trident *trident)
323 
324     Description: Allocate hardware channel in Bank B (32-63).
325 
326     Parameters :  trident - pointer to target device class for 4DWave.
327 
328     Return Value: hardware channel - 32-63 or -1 when no channel is available
329 
330   ---------------------------------------------------------------------------*/
331 
332 static int snd_trident_allocate_pcm_channel(struct snd_trident * trident)
333 {
334 	int idx;
335 
336 	if (trident->ChanPCMcnt >= trident->ChanPCM)
337 		return -1;
338 	for (idx = 31; idx >= 0; idx--) {
339 		if (!(trident->ChanMap[T4D_BANK_B] & (1 << idx))) {
340 			trident->ChanMap[T4D_BANK_B] |= 1 << idx;
341 			trident->ChanPCMcnt++;
342 			return idx + 32;
343 		}
344 	}
345 	return -1;
346 }
347 
348 /*---------------------------------------------------------------------------
349     void snd_trident_free_pcm_channel(int channel)
350 
351     Description: Free hardware channel in Bank B (32-63)
352 
353     Parameters :  trident - pointer to target device class for 4DWave.
354 	          channel - hardware channel number 0-63
355 
356     Return Value: none
357 
358   ---------------------------------------------------------------------------*/
359 
360 static void snd_trident_free_pcm_channel(struct snd_trident *trident, int channel)
361 {
362 	if (channel < 32 || channel > 63)
363 		return;
364 	channel &= 0x1f;
365 	if (trident->ChanMap[T4D_BANK_B] & (1 << channel)) {
366 		trident->ChanMap[T4D_BANK_B] &= ~(1 << channel);
367 		trident->ChanPCMcnt--;
368 	}
369 }
370 
371 /*---------------------------------------------------------------------------
372     unsigned int snd_trident_allocate_synth_channel(void)
373 
374     Description: Allocate hardware channel in Bank A (0-31).
375 
376     Parameters :  trident - pointer to target device class for 4DWave.
377 
378     Return Value: hardware channel - 0-31 or -1 when no channel is available
379 
380   ---------------------------------------------------------------------------*/
381 
382 static int snd_trident_allocate_synth_channel(struct snd_trident * trident)
383 {
384 	int idx;
385 
386 	for (idx = 31; idx >= 0; idx--) {
387 		if (!(trident->ChanMap[T4D_BANK_A] & (1 << idx))) {
388 			trident->ChanMap[T4D_BANK_A] |= 1 << idx;
389 			trident->synth.ChanSynthCount++;
390 			return idx;
391 		}
392 	}
393 	return -1;
394 }
395 
396 /*---------------------------------------------------------------------------
397     void snd_trident_free_synth_channel( int channel )
398 
399     Description: Free hardware channel in Bank B (0-31).
400 
401     Parameters :  trident - pointer to target device class for 4DWave.
402 	          channel - hardware channel number 0-63
403 
404     Return Value: none
405 
406   ---------------------------------------------------------------------------*/
407 
408 static void snd_trident_free_synth_channel(struct snd_trident *trident, int channel)
409 {
410 	if (channel < 0 || channel > 31)
411 		return;
412 	channel &= 0x1f;
413 	if (trident->ChanMap[T4D_BANK_A] & (1 << channel)) {
414 		trident->ChanMap[T4D_BANK_A] &= ~(1 << channel);
415 		trident->synth.ChanSynthCount--;
416 	}
417 }
418 
419 /*---------------------------------------------------------------------------
420    snd_trident_write_voice_regs
421 
422    Description: This routine will complete and write the 5 hardware channel
423                 registers to hardware.
424 
425    Parameters:  trident - pointer to target device class for 4DWave.
426                 voice - synthesizer voice structure
427                 Each register field.
428 
429   ---------------------------------------------------------------------------*/
430 
431 void snd_trident_write_voice_regs(struct snd_trident * trident,
432 				  struct snd_trident_voice * voice)
433 {
434 	unsigned int FmcRvolCvol;
435 	unsigned int regs[5];
436 
437 	regs[1] = voice->LBA;
438 	regs[4] = (voice->GVSel << 31) |
439 		  ((voice->Pan & 0x0000007f) << 24) |
440 		  ((voice->CTRL & 0x0000000f) << 12);
441 	FmcRvolCvol = ((voice->FMC & 3) << 14) |
442 	              ((voice->RVol & 0x7f) << 7) |
443 	              (voice->CVol & 0x7f);
444 
445 	switch (trident->device) {
446 	case TRIDENT_DEVICE_ID_SI7018:
447 		regs[4] |= voice->number > 31 ?
448 				(voice->Vol & 0x000003ff) :
449 				((voice->Vol & 0x00003fc) << (16-2)) |
450 				(voice->EC & 0x00000fff);
451 		regs[0] = (voice->CSO << 16) | ((voice->Alpha & 0x00000fff) << 4) |
452 			(voice->FMS & 0x0000000f);
453 		regs[2] = (voice->ESO << 16) | (voice->Delta & 0x0ffff);
454 		regs[3] = (voice->Attribute << 16) | FmcRvolCvol;
455 		break;
456 	case TRIDENT_DEVICE_ID_DX:
457 		regs[4] |= ((voice->Vol & 0x000003fc) << (16-2)) |
458 			   (voice->EC & 0x00000fff);
459 		regs[0] = (voice->CSO << 16) | ((voice->Alpha & 0x00000fff) << 4) |
460 			(voice->FMS & 0x0000000f);
461 		regs[2] = (voice->ESO << 16) | (voice->Delta & 0x0ffff);
462 		regs[3] = FmcRvolCvol;
463 		break;
464 	case TRIDENT_DEVICE_ID_NX:
465 		regs[4] |= ((voice->Vol & 0x000003fc) << (16-2)) |
466 			   (voice->EC & 0x00000fff);
467 		regs[0] = (voice->Delta << 24) | (voice->CSO & 0x00ffffff);
468 		regs[2] = ((voice->Delta << 16) & 0xff000000) |
469 			(voice->ESO & 0x00ffffff);
470 		regs[3] = (voice->Alpha << 20) |
471 			((voice->FMS & 0x0000000f) << 16) | FmcRvolCvol;
472 		break;
473 	default:
474 		snd_BUG();
475 		return;
476 	}
477 
478 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
479 	outl(regs[0], TRID_REG(trident, CH_START + 0));
480 	outl(regs[1], TRID_REG(trident, CH_START + 4));
481 	outl(regs[2], TRID_REG(trident, CH_START + 8));
482 	outl(regs[3], TRID_REG(trident, CH_START + 12));
483 	outl(regs[4], TRID_REG(trident, CH_START + 16));
484 
485 #if 0
486 	dev_dbg(trident->card->dev, "written %i channel:\n", voice->number);
487 	dev_dbg(trident->card->dev, "  regs[0] = 0x%x/0x%x\n",
488 	       regs[0], inl(TRID_REG(trident, CH_START + 0)));
489 	dev_dbg(trident->card->dev, "  regs[1] = 0x%x/0x%x\n",
490 	       regs[1], inl(TRID_REG(trident, CH_START + 4)));
491 	dev_dbg(trident->card->dev, "  regs[2] = 0x%x/0x%x\n",
492 	       regs[2], inl(TRID_REG(trident, CH_START + 8)));
493 	dev_dbg(trident->card->dev, "  regs[3] = 0x%x/0x%x\n",
494 	       regs[3], inl(TRID_REG(trident, CH_START + 12)));
495 	dev_dbg(trident->card->dev, "  regs[4] = 0x%x/0x%x\n",
496 	       regs[4], inl(TRID_REG(trident, CH_START + 16)));
497 #endif
498 }
499 
500 EXPORT_SYMBOL(snd_trident_write_voice_regs);
501 
502 /*---------------------------------------------------------------------------
503    snd_trident_write_cso_reg
504 
505    Description: This routine will write the new CSO offset
506                 register to hardware.
507 
508    Parameters:  trident - pointer to target device class for 4DWave.
509                 voice - synthesizer voice structure
510                 CSO - new CSO value
511 
512   ---------------------------------------------------------------------------*/
513 
514 static void snd_trident_write_cso_reg(struct snd_trident * trident,
515 				      struct snd_trident_voice * voice,
516 				      unsigned int CSO)
517 {
518 	voice->CSO = CSO;
519 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
520 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
521 		outw(voice->CSO, TRID_REG(trident, CH_DX_CSO_ALPHA_FMS) + 2);
522 	} else {
523 		outl((voice->Delta << 24) |
524 		     (voice->CSO & 0x00ffffff), TRID_REG(trident, CH_NX_DELTA_CSO));
525 	}
526 }
527 
528 /*---------------------------------------------------------------------------
529    snd_trident_write_eso_reg
530 
531    Description: This routine will write the new ESO offset
532                 register to hardware.
533 
534    Parameters:  trident - pointer to target device class for 4DWave.
535                 voice - synthesizer voice structure
536                 ESO - new ESO value
537 
538   ---------------------------------------------------------------------------*/
539 
540 static void snd_trident_write_eso_reg(struct snd_trident * trident,
541 				      struct snd_trident_voice * voice,
542 				      unsigned int ESO)
543 {
544 	voice->ESO = ESO;
545 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
546 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
547 		outw(voice->ESO, TRID_REG(trident, CH_DX_ESO_DELTA) + 2);
548 	} else {
549 		outl(((voice->Delta << 16) & 0xff000000) | (voice->ESO & 0x00ffffff),
550 		     TRID_REG(trident, CH_NX_DELTA_ESO));
551 	}
552 }
553 
554 /*---------------------------------------------------------------------------
555    snd_trident_write_vol_reg
556 
557    Description: This routine will write the new voice volume
558                 register to hardware.
559 
560    Parameters:  trident - pointer to target device class for 4DWave.
561                 voice - synthesizer voice structure
562                 Vol - new voice volume
563 
564   ---------------------------------------------------------------------------*/
565 
566 static void snd_trident_write_vol_reg(struct snd_trident * trident,
567 				      struct snd_trident_voice * voice,
568 				      unsigned int Vol)
569 {
570 	voice->Vol = Vol;
571 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
572 	switch (trident->device) {
573 	case TRIDENT_DEVICE_ID_DX:
574 	case TRIDENT_DEVICE_ID_NX:
575 		outb(voice->Vol >> 2, TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC + 2));
576 		break;
577 	case TRIDENT_DEVICE_ID_SI7018:
578 		/* dev_dbg(trident->card->dev, "voice->Vol = 0x%x\n", voice->Vol); */
579 		outw((voice->CTRL << 12) | voice->Vol,
580 		     TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
581 		break;
582 	}
583 }
584 
585 /*---------------------------------------------------------------------------
586    snd_trident_write_pan_reg
587 
588    Description: This routine will write the new voice pan
589                 register to hardware.
590 
591    Parameters:  trident - pointer to target device class for 4DWave.
592                 voice - synthesizer voice structure
593                 Pan - new pan value
594 
595   ---------------------------------------------------------------------------*/
596 
597 static void snd_trident_write_pan_reg(struct snd_trident * trident,
598 				      struct snd_trident_voice * voice,
599 				      unsigned int Pan)
600 {
601 	voice->Pan = Pan;
602 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
603 	outb(((voice->GVSel & 0x01) << 7) | (voice->Pan & 0x7f),
604 	     TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC + 3));
605 }
606 
607 /*---------------------------------------------------------------------------
608    snd_trident_write_rvol_reg
609 
610    Description: This routine will write the new reverb volume
611                 register to hardware.
612 
613    Parameters:  trident - pointer to target device class for 4DWave.
614                 voice - synthesizer voice structure
615                 RVol - new reverb volume
616 
617   ---------------------------------------------------------------------------*/
618 
619 static void snd_trident_write_rvol_reg(struct snd_trident * trident,
620 				       struct snd_trident_voice * voice,
621 				       unsigned int RVol)
622 {
623 	voice->RVol = RVol;
624 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
625 	outw(((voice->FMC & 0x0003) << 14) | ((voice->RVol & 0x007f) << 7) |
626 	     (voice->CVol & 0x007f),
627 	     TRID_REG(trident, trident->device == TRIDENT_DEVICE_ID_NX ?
628 		      CH_NX_ALPHA_FMS_FMC_RVOL_CVOL : CH_DX_FMC_RVOL_CVOL));
629 }
630 
631 /*---------------------------------------------------------------------------
632    snd_trident_write_cvol_reg
633 
634    Description: This routine will write the new chorus volume
635                 register to hardware.
636 
637    Parameters:  trident - pointer to target device class for 4DWave.
638                 voice - synthesizer voice structure
639                 CVol - new chorus volume
640 
641   ---------------------------------------------------------------------------*/
642 
643 static void snd_trident_write_cvol_reg(struct snd_trident * trident,
644 				       struct snd_trident_voice * voice,
645 				       unsigned int CVol)
646 {
647 	voice->CVol = CVol;
648 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
649 	outw(((voice->FMC & 0x0003) << 14) | ((voice->RVol & 0x007f) << 7) |
650 	     (voice->CVol & 0x007f),
651 	     TRID_REG(trident, trident->device == TRIDENT_DEVICE_ID_NX ?
652 		      CH_NX_ALPHA_FMS_FMC_RVOL_CVOL : CH_DX_FMC_RVOL_CVOL));
653 }
654 
655 /*---------------------------------------------------------------------------
656    snd_trident_convert_rate
657 
658    Description: This routine converts rate in HZ to hardware delta value.
659 
660    Parameters:  trident - pointer to target device class for 4DWave.
661                 rate - Real or Virtual channel number.
662 
663    Returns:     Delta value.
664 
665   ---------------------------------------------------------------------------*/
666 static unsigned int snd_trident_convert_rate(unsigned int rate)
667 {
668 	unsigned int delta;
669 
670 	// We special case 44100 and 8000 since rounding with the equation
671 	// does not give us an accurate enough value. For 11025 and 22050
672 	// the equation gives us the best answer. All other frequencies will
673 	// also use the equation. JDW
674 	if (rate == 44100)
675 		delta = 0xeb3;
676 	else if (rate == 8000)
677 		delta = 0x2ab;
678 	else if (rate == 48000)
679 		delta = 0x1000;
680 	else
681 		delta = DIV_ROUND_CLOSEST(rate << 12, 48000) & 0x0000ffff;
682 	return delta;
683 }
684 
685 /*---------------------------------------------------------------------------
686    snd_trident_convert_adc_rate
687 
688    Description: This routine converts rate in HZ to hardware delta value.
689 
690    Parameters:  trident - pointer to target device class for 4DWave.
691                 rate - Real or Virtual channel number.
692 
693    Returns:     Delta value.
694 
695   ---------------------------------------------------------------------------*/
696 static unsigned int snd_trident_convert_adc_rate(unsigned int rate)
697 {
698 	unsigned int delta;
699 
700 	// We special case 44100 and 8000 since rounding with the equation
701 	// does not give us an accurate enough value. For 11025 and 22050
702 	// the equation gives us the best answer. All other frequencies will
703 	// also use the equation. JDW
704 	if (rate == 44100)
705 		delta = 0x116a;
706 	else if (rate == 8000)
707 		delta = 0x6000;
708 	else if (rate == 48000)
709 		delta = 0x1000;
710 	else
711 		delta = ((48000 << 12) / rate) & 0x0000ffff;
712 	return delta;
713 }
714 
715 /*---------------------------------------------------------------------------
716    snd_trident_spurious_threshold
717 
718    Description: This routine converts rate in HZ to spurious threshold.
719 
720    Parameters:  trident - pointer to target device class for 4DWave.
721                 rate - Real or Virtual channel number.
722 
723    Returns:     Delta value.
724 
725   ---------------------------------------------------------------------------*/
726 static unsigned int snd_trident_spurious_threshold(unsigned int rate,
727 						   unsigned int period_size)
728 {
729 	unsigned int res = (rate * period_size) / 48000;
730 	if (res < 64)
731 		res = res / 2;
732 	else
733 		res -= 32;
734 	return res;
735 }
736 
737 /*---------------------------------------------------------------------------
738    snd_trident_control_mode
739 
740    Description: This routine returns a control mode for a PCM channel.
741 
742    Parameters:  trident - pointer to target device class for 4DWave.
743                 substream  - PCM substream
744 
745    Returns:     Control value.
746 
747   ---------------------------------------------------------------------------*/
748 static unsigned int snd_trident_control_mode(struct snd_pcm_substream *substream)
749 {
750 	unsigned int CTRL;
751 	struct snd_pcm_runtime *runtime = substream->runtime;
752 
753 	/* set ctrl mode
754 	   CTRL default: 8-bit (unsigned) mono, loop mode enabled
755 	 */
756 	CTRL = 0x00000001;
757 	if (snd_pcm_format_width(runtime->format) == 16)
758 		CTRL |= 0x00000008;	// 16-bit data
759 	if (snd_pcm_format_signed(runtime->format))
760 		CTRL |= 0x00000002;	// signed data
761 	if (runtime->channels > 1)
762 		CTRL |= 0x00000004;	// stereo data
763 	return CTRL;
764 }
765 
766 /*
767  *  PCM part
768  */
769 
770 /*---------------------------------------------------------------------------
771    snd_trident_allocate_pcm_mem
772 
773    Description: Allocate PCM ring buffer for given substream
774 
775    Parameters:  substream  - PCM substream class
776 		hw_params  - hardware parameters
777 
778    Returns:     Error status
779 
780   ---------------------------------------------------------------------------*/
781 
782 static int snd_trident_allocate_pcm_mem(struct snd_pcm_substream *substream,
783 					struct snd_pcm_hw_params *hw_params)
784 {
785 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
786 	struct snd_pcm_runtime *runtime = substream->runtime;
787 	struct snd_trident_voice *voice = runtime->private_data;
788 
789 	if (trident->tlb.entries) {
790 		if (runtime->buffer_changed) {
791 			if (voice->memblk)
792 				snd_trident_free_pages(trident, voice->memblk);
793 			voice->memblk = snd_trident_alloc_pages(trident, substream);
794 			if (voice->memblk == NULL)
795 				return -ENOMEM;
796 		}
797 	}
798 	return 0;
799 }
800 
801 /*---------------------------------------------------------------------------
802    snd_trident_allocate_evoice
803 
804    Description: Allocate extra voice as interrupt generator
805 
806    Parameters:  substream  - PCM substream class
807 		hw_params  - hardware parameters
808 
809    Returns:     Error status
810 
811   ---------------------------------------------------------------------------*/
812 
813 static int snd_trident_allocate_evoice(struct snd_pcm_substream *substream,
814 				       struct snd_pcm_hw_params *hw_params)
815 {
816 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
817 	struct snd_pcm_runtime *runtime = substream->runtime;
818 	struct snd_trident_voice *voice = runtime->private_data;
819 	struct snd_trident_voice *evoice = voice->extra;
820 
821 	/* voice management */
822 
823 	if (params_buffer_size(hw_params) / 2 != params_period_size(hw_params)) {
824 		if (evoice == NULL) {
825 			evoice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
826 			if (evoice == NULL)
827 				return -ENOMEM;
828 			voice->extra = evoice;
829 			evoice->substream = substream;
830 		}
831 	} else {
832 		if (evoice != NULL) {
833 			snd_trident_free_voice(trident, evoice);
834 			voice->extra = evoice = NULL;
835 		}
836 	}
837 
838 	return 0;
839 }
840 
841 /*---------------------------------------------------------------------------
842    snd_trident_hw_params
843 
844    Description: Set the hardware parameters for the playback device.
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_hw_params(struct snd_pcm_substream *substream,
854 				 struct snd_pcm_hw_params *hw_params)
855 {
856 	int err;
857 
858 	err = snd_trident_allocate_pcm_mem(substream, hw_params);
859 	if (err >= 0)
860 		err = snd_trident_allocate_evoice(substream, hw_params);
861 	return err;
862 }
863 
864 /*---------------------------------------------------------------------------
865    snd_trident_playback_hw_free
866 
867    Description: Release the hardware resources for the playback device.
868 
869    Parameters:  substream  - PCM substream class
870 
871    Returns:     Error status
872 
873   ---------------------------------------------------------------------------*/
874 
875 static int snd_trident_hw_free(struct snd_pcm_substream *substream)
876 {
877 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
878 	struct snd_pcm_runtime *runtime = substream->runtime;
879 	struct snd_trident_voice *voice = runtime->private_data;
880 	struct snd_trident_voice *evoice = voice ? voice->extra : NULL;
881 
882 	if (trident->tlb.entries) {
883 		if (voice && voice->memblk) {
884 			snd_trident_free_pages(trident, voice->memblk);
885 			voice->memblk = NULL;
886 		}
887 	}
888 	if (evoice != NULL) {
889 		snd_trident_free_voice(trident, evoice);
890 		voice->extra = NULL;
891 	}
892 	return 0;
893 }
894 
895 /*---------------------------------------------------------------------------
896    snd_trident_playback_prepare
897 
898    Description: Prepare playback device for playback.
899 
900    Parameters:  substream  - PCM substream class
901 
902    Returns:     Error status
903 
904   ---------------------------------------------------------------------------*/
905 
906 static int snd_trident_playback_prepare(struct snd_pcm_substream *substream)
907 {
908 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
909 	struct snd_pcm_runtime *runtime = substream->runtime;
910 	struct snd_trident_voice *voice = runtime->private_data;
911 	struct snd_trident_voice *evoice = voice->extra;
912 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[substream->number];
913 
914 	spin_lock_irq(&trident->reg_lock);
915 
916 	/* set delta (rate) value */
917 	voice->Delta = snd_trident_convert_rate(runtime->rate);
918 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
919 
920 	/* set Loop Begin Address */
921 	if (voice->memblk)
922 		voice->LBA = voice->memblk->offset;
923 	else
924 		voice->LBA = runtime->dma_addr;
925 
926 	voice->CSO = 0;
927 	voice->ESO = runtime->buffer_size - 1;	/* in samples */
928 	voice->CTRL = snd_trident_control_mode(substream);
929 	voice->FMC = 3;
930 	voice->GVSel = 1;
931 	voice->EC = 0;
932 	voice->Alpha = 0;
933 	voice->FMS = 0;
934 	voice->Vol = mix->vol;
935 	voice->RVol = mix->rvol;
936 	voice->CVol = mix->cvol;
937 	voice->Pan = mix->pan;
938 	voice->Attribute = 0;
939 #if 0
940 	voice->Attribute = (1<<(30-16))|(2<<(26-16))|
941 			   (0<<(24-16))|(0x1f<<(19-16));
942 #else
943 	voice->Attribute = 0;
944 #endif
945 
946 	snd_trident_write_voice_regs(trident, voice);
947 
948 	if (evoice != NULL) {
949 		evoice->Delta = voice->Delta;
950 		evoice->spurious_threshold = voice->spurious_threshold;
951 		evoice->LBA = voice->LBA;
952 		evoice->CSO = 0;
953 		evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
954 		evoice->CTRL = voice->CTRL;
955 		evoice->FMC = 3;
956 		evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
957 		evoice->EC = 0;
958 		evoice->Alpha = 0;
959 		evoice->FMS = 0;
960 		evoice->Vol = 0x3ff;			/* mute */
961 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
962 		evoice->Pan = 0x7f;			/* mute */
963 #if 0
964 		evoice->Attribute = (1<<(30-16))|(2<<(26-16))|
965 				    (0<<(24-16))|(0x1f<<(19-16));
966 #else
967 		evoice->Attribute = 0;
968 #endif
969 		snd_trident_write_voice_regs(trident, evoice);
970 		evoice->isync2 = 1;
971 		evoice->isync_mark = runtime->period_size;
972 		evoice->ESO = (runtime->period_size * 2) - 1;
973 	}
974 
975 	spin_unlock_irq(&trident->reg_lock);
976 
977 	return 0;
978 }
979 
980 /*---------------------------------------------------------------------------
981    snd_trident_capture_hw_params
982 
983    Description: Set the hardware parameters for the capture device.
984 
985    Parameters:  substream  - PCM substream class
986 		hw_params  - hardware parameters
987 
988    Returns:     Error status
989 
990   ---------------------------------------------------------------------------*/
991 
992 static int snd_trident_capture_hw_params(struct snd_pcm_substream *substream,
993 					 struct snd_pcm_hw_params *hw_params)
994 {
995 	return snd_trident_allocate_pcm_mem(substream, hw_params);
996 }
997 
998 /*---------------------------------------------------------------------------
999    snd_trident_capture_prepare
1000 
1001    Description: Prepare capture device for playback.
1002 
1003    Parameters:  substream  - PCM substream class
1004 
1005    Returns:     Error status
1006 
1007   ---------------------------------------------------------------------------*/
1008 
1009 static int snd_trident_capture_prepare(struct snd_pcm_substream *substream)
1010 {
1011 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1012 	struct snd_pcm_runtime *runtime = substream->runtime;
1013 	struct snd_trident_voice *voice = runtime->private_data;
1014 	unsigned int val, ESO_bytes;
1015 
1016 	spin_lock_irq(&trident->reg_lock);
1017 
1018 	// Initialize the channel and set channel Mode
1019 	outb(0, TRID_REG(trident, LEGACY_DMAR15));
1020 
1021 	// Set DMA channel operation mode register
1022 	outb(0x54, TRID_REG(trident, LEGACY_DMAR11));
1023 
1024 	// Set channel buffer Address, DMAR0 expects contiguous PCI memory area
1025 	voice->LBA = runtime->dma_addr;
1026 	outl(voice->LBA, TRID_REG(trident, LEGACY_DMAR0));
1027 	if (voice->memblk)
1028 		voice->LBA = voice->memblk->offset;
1029 
1030 	// set ESO
1031 	ESO_bytes = snd_pcm_lib_buffer_bytes(substream) - 1;
1032 	outb((ESO_bytes & 0x00ff0000) >> 16, TRID_REG(trident, LEGACY_DMAR6));
1033 	outw((ESO_bytes & 0x0000ffff), TRID_REG(trident, LEGACY_DMAR4));
1034 	ESO_bytes++;
1035 
1036 	// Set channel sample rate, 4.12 format
1037 	val = DIV_ROUND_CLOSEST(48000U << 12, runtime->rate);
1038 	outw(val, TRID_REG(trident, T4D_SBDELTA_DELTA_R));
1039 
1040 	// Set channel interrupt blk length
1041 	if (snd_pcm_format_width(runtime->format) == 16) {
1042 		val = (unsigned short) ((ESO_bytes >> 1) - 1);
1043 	} else {
1044 		val = (unsigned short) (ESO_bytes - 1);
1045 	}
1046 
1047 	outl((val << 16) | val, TRID_REG(trident, T4D_SBBL_SBCL));
1048 
1049 	// Right now, set format and start to run captureing,
1050 	// continuous run loop enable.
1051 	trident->bDMAStart = 0x19;	// 0001 1001b
1052 
1053 	if (snd_pcm_format_width(runtime->format) == 16)
1054 		trident->bDMAStart |= 0x80;
1055 	if (snd_pcm_format_signed(runtime->format))
1056 		trident->bDMAStart |= 0x20;
1057 	if (runtime->channels > 1)
1058 		trident->bDMAStart |= 0x40;
1059 
1060 	// Prepare capture intr channel
1061 
1062 	voice->Delta = snd_trident_convert_rate(runtime->rate);
1063 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1064 	voice->isync = 1;
1065 	voice->isync_mark = runtime->period_size;
1066 	voice->isync_max = runtime->buffer_size;
1067 
1068 	// Set voice parameters
1069 	voice->CSO = 0;
1070 	voice->ESO = voice->isync_ESO = (runtime->period_size * 2) + 6 - 1;
1071 	voice->CTRL = snd_trident_control_mode(substream);
1072 	voice->FMC = 3;
1073 	voice->RVol = 0x7f;
1074 	voice->CVol = 0x7f;
1075 	voice->GVSel = 1;
1076 	voice->Pan = 0x7f;		/* mute */
1077 	voice->Vol = 0x3ff;		/* mute */
1078 	voice->EC = 0;
1079 	voice->Alpha = 0;
1080 	voice->FMS = 0;
1081 	voice->Attribute = 0;
1082 
1083 	snd_trident_write_voice_regs(trident, voice);
1084 
1085 	spin_unlock_irq(&trident->reg_lock);
1086 	return 0;
1087 }
1088 
1089 /*---------------------------------------------------------------------------
1090    snd_trident_si7018_capture_hw_params
1091 
1092    Description: Set the hardware parameters for the capture device.
1093 
1094    Parameters:  substream  - PCM substream class
1095 		hw_params  - hardware parameters
1096 
1097    Returns:     Error status
1098 
1099   ---------------------------------------------------------------------------*/
1100 
1101 static int snd_trident_si7018_capture_hw_params(struct snd_pcm_substream *substream,
1102 						struct snd_pcm_hw_params *hw_params)
1103 {
1104 	return snd_trident_allocate_evoice(substream, hw_params);
1105 }
1106 
1107 /*---------------------------------------------------------------------------
1108    snd_trident_si7018_capture_hw_free
1109 
1110    Description: Release the hardware resources for the capture device.
1111 
1112    Parameters:  substream  - PCM substream class
1113 
1114    Returns:     Error status
1115 
1116   ---------------------------------------------------------------------------*/
1117 
1118 static int snd_trident_si7018_capture_hw_free(struct snd_pcm_substream *substream)
1119 {
1120 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1121 	struct snd_pcm_runtime *runtime = substream->runtime;
1122 	struct snd_trident_voice *voice = runtime->private_data;
1123 	struct snd_trident_voice *evoice = voice ? voice->extra : NULL;
1124 
1125 	if (evoice != NULL) {
1126 		snd_trident_free_voice(trident, evoice);
1127 		voice->extra = NULL;
1128 	}
1129 	return 0;
1130 }
1131 
1132 /*---------------------------------------------------------------------------
1133    snd_trident_si7018_capture_prepare
1134 
1135    Description: Prepare capture device for playback.
1136 
1137    Parameters:  substream  - PCM substream class
1138 
1139    Returns:     Error status
1140 
1141   ---------------------------------------------------------------------------*/
1142 
1143 static int snd_trident_si7018_capture_prepare(struct snd_pcm_substream *substream)
1144 {
1145 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1146 	struct snd_pcm_runtime *runtime = substream->runtime;
1147 	struct snd_trident_voice *voice = runtime->private_data;
1148 	struct snd_trident_voice *evoice = voice->extra;
1149 
1150 	spin_lock_irq(&trident->reg_lock);
1151 
1152 	voice->LBA = runtime->dma_addr;
1153 	voice->Delta = snd_trident_convert_adc_rate(runtime->rate);
1154 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1155 
1156 	// Set voice parameters
1157 	voice->CSO = 0;
1158 	voice->ESO = runtime->buffer_size - 1;		/* in samples */
1159 	voice->CTRL = snd_trident_control_mode(substream);
1160 	voice->FMC = 0;
1161 	voice->RVol = 0;
1162 	voice->CVol = 0;
1163 	voice->GVSel = 1;
1164 	voice->Pan = T4D_DEFAULT_PCM_PAN;
1165 	voice->Vol = 0;
1166 	voice->EC = 0;
1167 	voice->Alpha = 0;
1168 	voice->FMS = 0;
1169 
1170 	voice->Attribute = (2 << (30-16)) |
1171 			   (2 << (26-16)) |
1172 			   (2 << (24-16)) |
1173 			   (1 << (23-16));
1174 
1175 	snd_trident_write_voice_regs(trident, voice);
1176 
1177 	if (evoice != NULL) {
1178 		evoice->Delta = snd_trident_convert_rate(runtime->rate);
1179 		evoice->spurious_threshold = voice->spurious_threshold;
1180 		evoice->LBA = voice->LBA;
1181 		evoice->CSO = 0;
1182 		evoice->ESO = (runtime->period_size * 2) + 20 - 1; /* in samples, 20 means correction */
1183 		evoice->CTRL = voice->CTRL;
1184 		evoice->FMC = 3;
1185 		evoice->GVSel = 0;
1186 		evoice->EC = 0;
1187 		evoice->Alpha = 0;
1188 		evoice->FMS = 0;
1189 		evoice->Vol = 0x3ff;			/* mute */
1190 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1191 		evoice->Pan = 0x7f;			/* mute */
1192 		evoice->Attribute = 0;
1193 		snd_trident_write_voice_regs(trident, evoice);
1194 		evoice->isync2 = 1;
1195 		evoice->isync_mark = runtime->period_size;
1196 		evoice->ESO = (runtime->period_size * 2) - 1;
1197 	}
1198 
1199 	spin_unlock_irq(&trident->reg_lock);
1200 	return 0;
1201 }
1202 
1203 /*---------------------------------------------------------------------------
1204    snd_trident_foldback_prepare
1205 
1206    Description: Prepare foldback capture device for playback.
1207 
1208    Parameters:  substream  - PCM substream class
1209 
1210    Returns:     Error status
1211 
1212   ---------------------------------------------------------------------------*/
1213 
1214 static int snd_trident_foldback_prepare(struct snd_pcm_substream *substream)
1215 {
1216 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1217 	struct snd_pcm_runtime *runtime = substream->runtime;
1218 	struct snd_trident_voice *voice = runtime->private_data;
1219 	struct snd_trident_voice *evoice = voice->extra;
1220 
1221 	spin_lock_irq(&trident->reg_lock);
1222 
1223 	/* Set channel buffer Address */
1224 	if (voice->memblk)
1225 		voice->LBA = voice->memblk->offset;
1226 	else
1227 		voice->LBA = runtime->dma_addr;
1228 
1229 	/* set target ESO for channel */
1230 	voice->ESO = runtime->buffer_size - 1;	/* in samples */
1231 
1232 	/* set sample rate */
1233 	voice->Delta = 0x1000;
1234 	voice->spurious_threshold = snd_trident_spurious_threshold(48000, runtime->period_size);
1235 
1236 	voice->CSO = 0;
1237 	voice->CTRL = snd_trident_control_mode(substream);
1238 	voice->FMC = 3;
1239 	voice->RVol = 0x7f;
1240 	voice->CVol = 0x7f;
1241 	voice->GVSel = 1;
1242 	voice->Pan = 0x7f;	/* mute */
1243 	voice->Vol = 0x3ff;	/* mute */
1244 	voice->EC = 0;
1245 	voice->Alpha = 0;
1246 	voice->FMS = 0;
1247 	voice->Attribute = 0;
1248 
1249 	/* set up capture channel */
1250 	outb(((voice->number & 0x3f) | 0x80), TRID_REG(trident, T4D_RCI + voice->foldback_chan));
1251 
1252 	snd_trident_write_voice_regs(trident, voice);
1253 
1254 	if (evoice != NULL) {
1255 		evoice->Delta = voice->Delta;
1256 		evoice->spurious_threshold = voice->spurious_threshold;
1257 		evoice->LBA = voice->LBA;
1258 		evoice->CSO = 0;
1259 		evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
1260 		evoice->CTRL = voice->CTRL;
1261 		evoice->FMC = 3;
1262 		evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
1263 		evoice->EC = 0;
1264 		evoice->Alpha = 0;
1265 		evoice->FMS = 0;
1266 		evoice->Vol = 0x3ff;			/* mute */
1267 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1268 		evoice->Pan = 0x7f;			/* mute */
1269 		evoice->Attribute = 0;
1270 		snd_trident_write_voice_regs(trident, evoice);
1271 		evoice->isync2 = 1;
1272 		evoice->isync_mark = runtime->period_size;
1273 		evoice->ESO = (runtime->period_size * 2) - 1;
1274 	}
1275 
1276 	spin_unlock_irq(&trident->reg_lock);
1277 	return 0;
1278 }
1279 
1280 /*---------------------------------------------------------------------------
1281    snd_trident_spdif_hw_params
1282 
1283    Description: Set the hardware parameters for the spdif device.
1284 
1285    Parameters:  substream  - PCM substream class
1286 		hw_params  - hardware parameters
1287 
1288    Returns:     Error status
1289 
1290   ---------------------------------------------------------------------------*/
1291 
1292 static int snd_trident_spdif_hw_params(struct snd_pcm_substream *substream,
1293 				       struct snd_pcm_hw_params *hw_params)
1294 {
1295 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1296 	unsigned int old_bits = 0, change = 0;
1297 	int err;
1298 
1299 	err = snd_trident_allocate_pcm_mem(substream, hw_params);
1300 	if (err < 0)
1301 		return err;
1302 
1303 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
1304 		err = snd_trident_allocate_evoice(substream, hw_params);
1305 		if (err < 0)
1306 			return err;
1307 	}
1308 
1309 	/* prepare SPDIF channel */
1310 	spin_lock_irq(&trident->reg_lock);
1311 	old_bits = trident->spdif_pcm_bits;
1312 	if (old_bits & IEC958_AES0_PROFESSIONAL)
1313 		trident->spdif_pcm_bits &= ~IEC958_AES0_PRO_FS;
1314 	else
1315 		trident->spdif_pcm_bits &= ~(IEC958_AES3_CON_FS << 24);
1316 	if (params_rate(hw_params) >= 48000) {
1317 		trident->spdif_pcm_ctrl = 0x3c;	// 48000 Hz
1318 		trident->spdif_pcm_bits |=
1319 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1320 				IEC958_AES0_PRO_FS_48000 :
1321 				(IEC958_AES3_CON_FS_48000 << 24);
1322 	}
1323 	else if (params_rate(hw_params) >= 44100) {
1324 		trident->spdif_pcm_ctrl = 0x3e;	// 44100 Hz
1325 		trident->spdif_pcm_bits |=
1326 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1327 				IEC958_AES0_PRO_FS_44100 :
1328 				(IEC958_AES3_CON_FS_44100 << 24);
1329 	}
1330 	else {
1331 		trident->spdif_pcm_ctrl = 0x3d;	// 32000 Hz
1332 		trident->spdif_pcm_bits |=
1333 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1334 				IEC958_AES0_PRO_FS_32000 :
1335 				(IEC958_AES3_CON_FS_32000 << 24);
1336 	}
1337 	change = old_bits != trident->spdif_pcm_bits;
1338 	spin_unlock_irq(&trident->reg_lock);
1339 
1340 	if (change)
1341 		snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE, &trident->spdif_pcm_ctl->id);
1342 
1343 	return 0;
1344 }
1345 
1346 /*---------------------------------------------------------------------------
1347    snd_trident_spdif_prepare
1348 
1349    Description: Prepare SPDIF device for playback.
1350 
1351    Parameters:  substream  - PCM substream class
1352 
1353    Returns:     Error status
1354 
1355   ---------------------------------------------------------------------------*/
1356 
1357 static int snd_trident_spdif_prepare(struct snd_pcm_substream *substream)
1358 {
1359 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1360 	struct snd_pcm_runtime *runtime = substream->runtime;
1361 	struct snd_trident_voice *voice = runtime->private_data;
1362 	struct snd_trident_voice *evoice = voice->extra;
1363 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[substream->number];
1364 	unsigned int RESO, LBAO;
1365 	unsigned int temp;
1366 
1367 	spin_lock_irq(&trident->reg_lock);
1368 
1369 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1370 
1371 		/* set delta (rate) value */
1372 		voice->Delta = snd_trident_convert_rate(runtime->rate);
1373 		voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1374 
1375 		/* set Loop Back Address */
1376 		LBAO = runtime->dma_addr;
1377 		if (voice->memblk)
1378 			voice->LBA = voice->memblk->offset;
1379 		else
1380 			voice->LBA = LBAO;
1381 
1382 		voice->isync = 1;
1383 		voice->isync3 = 1;
1384 		voice->isync_mark = runtime->period_size;
1385 		voice->isync_max = runtime->buffer_size;
1386 
1387 		/* set target ESO for channel */
1388 		RESO = runtime->buffer_size - 1;
1389 		voice->ESO = voice->isync_ESO = (runtime->period_size * 2) + 6 - 1;
1390 
1391 		/* set ctrl mode */
1392 		voice->CTRL = snd_trident_control_mode(substream);
1393 
1394 		voice->FMC = 3;
1395 		voice->RVol = 0x7f;
1396 		voice->CVol = 0x7f;
1397 		voice->GVSel = 1;
1398 		voice->Pan = 0x7f;
1399 		voice->Vol = 0x3ff;
1400 		voice->EC = 0;
1401 		voice->CSO = 0;
1402 		voice->Alpha = 0;
1403 		voice->FMS = 0;
1404 		voice->Attribute = 0;
1405 
1406 		/* prepare surrogate IRQ channel */
1407 		snd_trident_write_voice_regs(trident, voice);
1408 
1409 		outw((RESO & 0xffff), TRID_REG(trident, NX_SPESO));
1410 		outb((RESO >> 16), TRID_REG(trident, NX_SPESO + 2));
1411 		outl((LBAO & 0xfffffffc), TRID_REG(trident, NX_SPLBA));
1412 		outw((voice->CSO & 0xffff), TRID_REG(trident, NX_SPCTRL_SPCSO));
1413 		outb((voice->CSO >> 16), TRID_REG(trident, NX_SPCTRL_SPCSO + 2));
1414 
1415 		/* set SPDIF setting */
1416 		outb(trident->spdif_pcm_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1417 		outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
1418 
1419 	} else {	/* SiS */
1420 
1421 		/* set delta (rate) value */
1422 		voice->Delta = 0x800;
1423 		voice->spurious_threshold = snd_trident_spurious_threshold(48000, runtime->period_size);
1424 
1425 		/* set Loop Begin Address */
1426 		if (voice->memblk)
1427 			voice->LBA = voice->memblk->offset;
1428 		else
1429 			voice->LBA = runtime->dma_addr;
1430 
1431 		voice->CSO = 0;
1432 		voice->ESO = runtime->buffer_size - 1;	/* in samples */
1433 		voice->CTRL = snd_trident_control_mode(substream);
1434 		voice->FMC = 3;
1435 		voice->GVSel = 1;
1436 		voice->EC = 0;
1437 		voice->Alpha = 0;
1438 		voice->FMS = 0;
1439 		voice->Vol = mix->vol;
1440 		voice->RVol = mix->rvol;
1441 		voice->CVol = mix->cvol;
1442 		voice->Pan = mix->pan;
1443 		voice->Attribute = (1<<(30-16))|(7<<(26-16))|
1444 				   (0<<(24-16))|(0<<(19-16));
1445 
1446 		snd_trident_write_voice_regs(trident, voice);
1447 
1448 		if (evoice != NULL) {
1449 			evoice->Delta = voice->Delta;
1450 			evoice->spurious_threshold = voice->spurious_threshold;
1451 			evoice->LBA = voice->LBA;
1452 			evoice->CSO = 0;
1453 			evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
1454 			evoice->CTRL = voice->CTRL;
1455 			evoice->FMC = 3;
1456 			evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
1457 			evoice->EC = 0;
1458 			evoice->Alpha = 0;
1459 			evoice->FMS = 0;
1460 			evoice->Vol = 0x3ff;			/* mute */
1461 			evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1462 			evoice->Pan = 0x7f;			/* mute */
1463 			evoice->Attribute = 0;
1464 			snd_trident_write_voice_regs(trident, evoice);
1465 			evoice->isync2 = 1;
1466 			evoice->isync_mark = runtime->period_size;
1467 			evoice->ESO = (runtime->period_size * 2) - 1;
1468 		}
1469 
1470 		outl(trident->spdif_pcm_bits, TRID_REG(trident, SI_SPDIF_CS));
1471 		temp = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
1472 		temp &= ~(1<<19);
1473 		outl(temp, TRID_REG(trident, T4D_LFO_GC_CIR));
1474 		temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1475 		temp |= SPDIF_EN;
1476 		outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1477 	}
1478 
1479 	spin_unlock_irq(&trident->reg_lock);
1480 
1481 	return 0;
1482 }
1483 
1484 /*---------------------------------------------------------------------------
1485    snd_trident_trigger
1486 
1487    Description: Start/stop devices
1488 
1489    Parameters:  substream  - PCM substream class
1490    		cmd	- trigger command (STOP, GO)
1491 
1492    Returns:     Error status
1493 
1494   ---------------------------------------------------------------------------*/
1495 
1496 static int snd_trident_trigger(struct snd_pcm_substream *substream,
1497 			       int cmd)
1498 
1499 {
1500 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1501 	struct snd_pcm_substream *s;
1502 	unsigned int what, whati, capture_flag, spdif_flag;
1503 	struct snd_trident_voice *voice, *evoice;
1504 	unsigned int val, go;
1505 
1506 	switch (cmd) {
1507 	case SNDRV_PCM_TRIGGER_START:
1508 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1509 	case SNDRV_PCM_TRIGGER_RESUME:
1510 		go = 1;
1511 		break;
1512 	case SNDRV_PCM_TRIGGER_STOP:
1513 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1514 	case SNDRV_PCM_TRIGGER_SUSPEND:
1515 		go = 0;
1516 		break;
1517 	default:
1518 		return -EINVAL;
1519 	}
1520 	what = whati = capture_flag = spdif_flag = 0;
1521 	spin_lock(&trident->reg_lock);
1522 	val = inl(TRID_REG(trident, T4D_STIMER)) & 0x00ffffff;
1523 	snd_pcm_group_for_each_entry(s, substream) {
1524 		if ((struct snd_trident *) snd_pcm_substream_chip(s) == trident) {
1525 			voice = s->runtime->private_data;
1526 			evoice = voice->extra;
1527 			what |= 1 << (voice->number & 0x1f);
1528 			if (evoice == NULL) {
1529 				whati |= 1 << (voice->number & 0x1f);
1530 			} else {
1531 				what |= 1 << (evoice->number & 0x1f);
1532 				whati |= 1 << (evoice->number & 0x1f);
1533 				if (go)
1534 					evoice->stimer = val;
1535 			}
1536 			if (go) {
1537 				voice->running = 1;
1538 				voice->stimer = val;
1539 			} else {
1540 				voice->running = 0;
1541 			}
1542 			snd_pcm_trigger_done(s, substream);
1543 			if (voice->capture)
1544 				capture_flag = 1;
1545 			if (voice->spdif)
1546 				spdif_flag = 1;
1547 		}
1548 	}
1549 	if (spdif_flag) {
1550 		if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1551 			outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
1552 			val = trident->spdif_pcm_ctrl;
1553 			if (!go)
1554 				val &= ~(0x28);
1555 			outb(val, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1556 		} else {
1557 			outl(trident->spdif_pcm_bits, TRID_REG(trident, SI_SPDIF_CS));
1558 			val = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) | SPDIF_EN;
1559 			outl(val, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1560 		}
1561 	}
1562 	if (!go)
1563 		outl(what, TRID_REG(trident, T4D_STOP_B));
1564 	val = inl(TRID_REG(trident, T4D_AINTEN_B));
1565 	if (go) {
1566 		val |= whati;
1567 	} else {
1568 		val &= ~whati;
1569 	}
1570 	outl(val, TRID_REG(trident, T4D_AINTEN_B));
1571 	if (go) {
1572 		outl(what, TRID_REG(trident, T4D_START_B));
1573 
1574 		if (capture_flag && trident->device != TRIDENT_DEVICE_ID_SI7018)
1575 			outb(trident->bDMAStart, TRID_REG(trident, T4D_SBCTRL_SBE2R_SBDD));
1576 	} else {
1577 		if (capture_flag && trident->device != TRIDENT_DEVICE_ID_SI7018)
1578 			outb(0x00, TRID_REG(trident, T4D_SBCTRL_SBE2R_SBDD));
1579 	}
1580 	spin_unlock(&trident->reg_lock);
1581 	return 0;
1582 }
1583 
1584 /*---------------------------------------------------------------------------
1585    snd_trident_playback_pointer
1586 
1587    Description: This routine return the playback position
1588 
1589    Parameters:	substream  - PCM substream class
1590 
1591    Returns:     position of buffer
1592 
1593   ---------------------------------------------------------------------------*/
1594 
1595 static snd_pcm_uframes_t snd_trident_playback_pointer(struct snd_pcm_substream *substream)
1596 {
1597 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1598 	struct snd_pcm_runtime *runtime = substream->runtime;
1599 	struct snd_trident_voice *voice = runtime->private_data;
1600 	unsigned int cso;
1601 
1602 	if (!voice->running)
1603 		return 0;
1604 
1605 	spin_lock(&trident->reg_lock);
1606 
1607 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
1608 
1609 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
1610 		cso = inw(TRID_REG(trident, CH_DX_CSO_ALPHA_FMS + 2));
1611 	} else {		// ID_4DWAVE_NX
1612 		cso = (unsigned int) inl(TRID_REG(trident, CH_NX_DELTA_CSO)) & 0x00ffffff;
1613 	}
1614 
1615 	spin_unlock(&trident->reg_lock);
1616 
1617 	if (cso >= runtime->buffer_size)
1618 		cso = 0;
1619 
1620 	return cso;
1621 }
1622 
1623 /*---------------------------------------------------------------------------
1624    snd_trident_capture_pointer
1625 
1626    Description: This routine return the capture position
1627 
1628    Parameters:   pcm1    - PCM device class
1629 
1630    Returns:     position of buffer
1631 
1632   ---------------------------------------------------------------------------*/
1633 
1634 static snd_pcm_uframes_t snd_trident_capture_pointer(struct snd_pcm_substream *substream)
1635 {
1636 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1637 	struct snd_pcm_runtime *runtime = substream->runtime;
1638 	struct snd_trident_voice *voice = runtime->private_data;
1639 	unsigned int result;
1640 
1641 	if (!voice->running)
1642 		return 0;
1643 
1644 	result = inw(TRID_REG(trident, T4D_SBBL_SBCL));
1645 	if (runtime->channels > 1)
1646 		result >>= 1;
1647 	if (result > 0)
1648 		result = runtime->buffer_size - result;
1649 
1650 	return result;
1651 }
1652 
1653 /*---------------------------------------------------------------------------
1654    snd_trident_spdif_pointer
1655 
1656    Description: This routine return the SPDIF playback position
1657 
1658    Parameters:	substream  - PCM substream class
1659 
1660    Returns:     position of buffer
1661 
1662   ---------------------------------------------------------------------------*/
1663 
1664 static snd_pcm_uframes_t snd_trident_spdif_pointer(struct snd_pcm_substream *substream)
1665 {
1666 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1667 	struct snd_pcm_runtime *runtime = substream->runtime;
1668 	struct snd_trident_voice *voice = runtime->private_data;
1669 	unsigned int result;
1670 
1671 	if (!voice->running)
1672 		return 0;
1673 
1674 	result = inl(TRID_REG(trident, NX_SPCTRL_SPCSO)) & 0x00ffffff;
1675 
1676 	return result;
1677 }
1678 
1679 /*
1680  *  Playback support device description
1681  */
1682 
1683 static const struct snd_pcm_hardware snd_trident_playback =
1684 {
1685 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1686 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1687 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1688 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1689 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1690 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1691 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1692 	.rate_min =		4000,
1693 	.rate_max =		48000,
1694 	.channels_min =		1,
1695 	.channels_max =		2,
1696 	.buffer_bytes_max =	(256*1024),
1697 	.period_bytes_min =	64,
1698 	.period_bytes_max =	(256*1024),
1699 	.periods_min =		1,
1700 	.periods_max =		1024,
1701 	.fifo_size =		0,
1702 };
1703 
1704 /*
1705  *  Capture support device description
1706  */
1707 
1708 static const struct snd_pcm_hardware snd_trident_capture =
1709 {
1710 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1711 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1712 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1713 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1714 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1715 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1716 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1717 	.rate_min =		4000,
1718 	.rate_max =		48000,
1719 	.channels_min =		1,
1720 	.channels_max =		2,
1721 	.buffer_bytes_max =	(128*1024),
1722 	.period_bytes_min =	64,
1723 	.period_bytes_max =	(128*1024),
1724 	.periods_min =		1,
1725 	.periods_max =		1024,
1726 	.fifo_size =		0,
1727 };
1728 
1729 /*
1730  *  Foldback capture support device description
1731  */
1732 
1733 static const struct snd_pcm_hardware snd_trident_foldback =
1734 {
1735 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1736 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1737 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1738 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1739 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1740 	.rates =		SNDRV_PCM_RATE_48000,
1741 	.rate_min =		48000,
1742 	.rate_max =		48000,
1743 	.channels_min =		2,
1744 	.channels_max =		2,
1745 	.buffer_bytes_max =	(128*1024),
1746 	.period_bytes_min =	64,
1747 	.period_bytes_max =	(128*1024),
1748 	.periods_min =		1,
1749 	.periods_max =		1024,
1750 	.fifo_size =		0,
1751 };
1752 
1753 /*
1754  *  SPDIF playback support device description
1755  */
1756 
1757 static const struct snd_pcm_hardware snd_trident_spdif =
1758 {
1759 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1760 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1761 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1762 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1763 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1764 	.rates =		(SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
1765 				 SNDRV_PCM_RATE_48000),
1766 	.rate_min =		32000,
1767 	.rate_max =		48000,
1768 	.channels_min =		2,
1769 	.channels_max =		2,
1770 	.buffer_bytes_max =	(128*1024),
1771 	.period_bytes_min =	64,
1772 	.period_bytes_max =	(128*1024),
1773 	.periods_min =		1,
1774 	.periods_max =		1024,
1775 	.fifo_size =		0,
1776 };
1777 
1778 static const struct snd_pcm_hardware snd_trident_spdif_7018 =
1779 {
1780 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1781 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1782 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1783 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1784 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1785 	.rates =		SNDRV_PCM_RATE_48000,
1786 	.rate_min =		48000,
1787 	.rate_max =		48000,
1788 	.channels_min =		2,
1789 	.channels_max =		2,
1790 	.buffer_bytes_max =	(128*1024),
1791 	.period_bytes_min =	64,
1792 	.period_bytes_max =	(128*1024),
1793 	.periods_min =		1,
1794 	.periods_max =		1024,
1795 	.fifo_size =		0,
1796 };
1797 
1798 static void snd_trident_pcm_free_substream(struct snd_pcm_runtime *runtime)
1799 {
1800 	struct snd_trident_voice *voice = runtime->private_data;
1801 	struct snd_trident *trident;
1802 
1803 	if (voice) {
1804 		trident = voice->trident;
1805 		snd_trident_free_voice(trident, voice);
1806 	}
1807 }
1808 
1809 static int snd_trident_playback_open(struct snd_pcm_substream *substream)
1810 {
1811 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1812 	struct snd_pcm_runtime *runtime = substream->runtime;
1813 	struct snd_trident_voice *voice;
1814 
1815 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1816 	if (voice == NULL)
1817 		return -EAGAIN;
1818 	snd_trident_pcm_mixer_build(trident, voice, substream);
1819 	voice->substream = substream;
1820 	runtime->private_data = voice;
1821 	runtime->private_free = snd_trident_pcm_free_substream;
1822 	runtime->hw = snd_trident_playback;
1823 	snd_pcm_set_sync(substream);
1824 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1825 	return 0;
1826 }
1827 
1828 /*---------------------------------------------------------------------------
1829    snd_trident_playback_close
1830 
1831    Description: This routine will close the 4DWave playback device. For now
1832                 we will simply free the dma transfer buffer.
1833 
1834    Parameters:	substream  - PCM substream class
1835 
1836   ---------------------------------------------------------------------------*/
1837 static int snd_trident_playback_close(struct snd_pcm_substream *substream)
1838 {
1839 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1840 	struct snd_pcm_runtime *runtime = substream->runtime;
1841 	struct snd_trident_voice *voice = runtime->private_data;
1842 
1843 	snd_trident_pcm_mixer_free(trident, voice, substream);
1844 	return 0;
1845 }
1846 
1847 /*---------------------------------------------------------------------------
1848    snd_trident_spdif_open
1849 
1850    Description: This routine will open the 4DWave SPDIF device.
1851 
1852    Parameters:	substream  - PCM substream class
1853 
1854    Returns:     status  - success or failure flag
1855 
1856   ---------------------------------------------------------------------------*/
1857 
1858 static int snd_trident_spdif_open(struct snd_pcm_substream *substream)
1859 {
1860 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1861 	struct snd_trident_voice *voice;
1862 	struct snd_pcm_runtime *runtime = substream->runtime;
1863 
1864 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1865 	if (voice == NULL)
1866 		return -EAGAIN;
1867 	voice->spdif = 1;
1868 	voice->substream = substream;
1869 	spin_lock_irq(&trident->reg_lock);
1870 	trident->spdif_pcm_bits = trident->spdif_bits;
1871 	spin_unlock_irq(&trident->reg_lock);
1872 
1873 	runtime->private_data = voice;
1874 	runtime->private_free = snd_trident_pcm_free_substream;
1875 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
1876 		runtime->hw = snd_trident_spdif;
1877 	} else {
1878 		runtime->hw = snd_trident_spdif_7018;
1879 	}
1880 
1881 	trident->spdif_pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1882 	snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE |
1883 		       SNDRV_CTL_EVENT_MASK_INFO, &trident->spdif_pcm_ctl->id);
1884 
1885 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1886 	return 0;
1887 }
1888 
1889 
1890 /*---------------------------------------------------------------------------
1891    snd_trident_spdif_close
1892 
1893    Description: This routine will close the 4DWave SPDIF device.
1894 
1895    Parameters:	substream  - PCM substream class
1896 
1897   ---------------------------------------------------------------------------*/
1898 
1899 static int snd_trident_spdif_close(struct snd_pcm_substream *substream)
1900 {
1901 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1902 	unsigned int temp;
1903 
1904 	spin_lock_irq(&trident->reg_lock);
1905 	// restore default SPDIF setting
1906 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1907 		outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1908 		outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
1909 	} else {
1910 		outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
1911 		temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1912 		if (trident->spdif_ctrl) {
1913 			temp |= SPDIF_EN;
1914 		} else {
1915 			temp &= ~SPDIF_EN;
1916 		}
1917 		outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1918 	}
1919 	spin_unlock_irq(&trident->reg_lock);
1920 	trident->spdif_pcm_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1921 	snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE |
1922 		       SNDRV_CTL_EVENT_MASK_INFO, &trident->spdif_pcm_ctl->id);
1923 	return 0;
1924 }
1925 
1926 /*---------------------------------------------------------------------------
1927    snd_trident_capture_open
1928 
1929    Description: This routine will open the 4DWave capture device.
1930 
1931    Parameters:	substream  - PCM substream class
1932 
1933    Returns:     status  - success or failure flag
1934 
1935   ---------------------------------------------------------------------------*/
1936 
1937 static int snd_trident_capture_open(struct snd_pcm_substream *substream)
1938 {
1939 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1940 	struct snd_trident_voice *voice;
1941 	struct snd_pcm_runtime *runtime = substream->runtime;
1942 
1943 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1944 	if (voice == NULL)
1945 		return -EAGAIN;
1946 	voice->capture = 1;
1947 	voice->substream = substream;
1948 	runtime->private_data = voice;
1949 	runtime->private_free = snd_trident_pcm_free_substream;
1950 	runtime->hw = snd_trident_capture;
1951 	snd_pcm_set_sync(substream);
1952 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1953 	return 0;
1954 }
1955 
1956 /*---------------------------------------------------------------------------
1957    snd_trident_capture_close
1958 
1959    Description: This routine will close the 4DWave capture device. For now
1960                 we will simply free the dma transfer buffer.
1961 
1962    Parameters:	substream  - PCM substream class
1963 
1964   ---------------------------------------------------------------------------*/
1965 static int snd_trident_capture_close(struct snd_pcm_substream *substream)
1966 {
1967 	return 0;
1968 }
1969 
1970 /*---------------------------------------------------------------------------
1971    snd_trident_foldback_open
1972 
1973    Description: This routine will open the 4DWave foldback capture device.
1974 
1975    Parameters:	substream  - PCM substream class
1976 
1977    Returns:     status  - success or failure flag
1978 
1979   ---------------------------------------------------------------------------*/
1980 
1981 static int snd_trident_foldback_open(struct snd_pcm_substream *substream)
1982 {
1983 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1984 	struct snd_trident_voice *voice;
1985 	struct snd_pcm_runtime *runtime = substream->runtime;
1986 
1987 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1988 	if (voice == NULL)
1989 		return -EAGAIN;
1990 	voice->foldback_chan = substream->number;
1991 	voice->substream = substream;
1992 	runtime->private_data = voice;
1993 	runtime->private_free = snd_trident_pcm_free_substream;
1994 	runtime->hw = snd_trident_foldback;
1995 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1996 	return 0;
1997 }
1998 
1999 /*---------------------------------------------------------------------------
2000    snd_trident_foldback_close
2001 
2002    Description: This routine will close the 4DWave foldback capture device.
2003 		For now we will simply free the dma transfer buffer.
2004 
2005    Parameters:	substream  - PCM substream class
2006 
2007   ---------------------------------------------------------------------------*/
2008 static int snd_trident_foldback_close(struct snd_pcm_substream *substream)
2009 {
2010 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
2011 	struct snd_trident_voice *voice;
2012 	struct snd_pcm_runtime *runtime = substream->runtime;
2013 	voice = runtime->private_data;
2014 
2015 	/* stop capture channel */
2016 	spin_lock_irq(&trident->reg_lock);
2017 	outb(0x00, TRID_REG(trident, T4D_RCI + voice->foldback_chan));
2018 	spin_unlock_irq(&trident->reg_lock);
2019 	return 0;
2020 }
2021 
2022 /*---------------------------------------------------------------------------
2023    PCM operations
2024   ---------------------------------------------------------------------------*/
2025 
2026 static const struct snd_pcm_ops snd_trident_playback_ops = {
2027 	.open =		snd_trident_playback_open,
2028 	.close =	snd_trident_playback_close,
2029 	.hw_params =	snd_trident_hw_params,
2030 	.hw_free =	snd_trident_hw_free,
2031 	.prepare =	snd_trident_playback_prepare,
2032 	.trigger =	snd_trident_trigger,
2033 	.pointer =	snd_trident_playback_pointer,
2034 };
2035 
2036 static const struct snd_pcm_ops snd_trident_nx_playback_ops = {
2037 	.open =		snd_trident_playback_open,
2038 	.close =	snd_trident_playback_close,
2039 	.hw_params =	snd_trident_hw_params,
2040 	.hw_free =	snd_trident_hw_free,
2041 	.prepare =	snd_trident_playback_prepare,
2042 	.trigger =	snd_trident_trigger,
2043 	.pointer =	snd_trident_playback_pointer,
2044 };
2045 
2046 static const struct snd_pcm_ops snd_trident_capture_ops = {
2047 	.open =		snd_trident_capture_open,
2048 	.close =	snd_trident_capture_close,
2049 	.hw_params =	snd_trident_capture_hw_params,
2050 	.hw_free =	snd_trident_hw_free,
2051 	.prepare =	snd_trident_capture_prepare,
2052 	.trigger =	snd_trident_trigger,
2053 	.pointer =	snd_trident_capture_pointer,
2054 };
2055 
2056 static const struct snd_pcm_ops snd_trident_si7018_capture_ops = {
2057 	.open =		snd_trident_capture_open,
2058 	.close =	snd_trident_capture_close,
2059 	.hw_params =	snd_trident_si7018_capture_hw_params,
2060 	.hw_free =	snd_trident_si7018_capture_hw_free,
2061 	.prepare =	snd_trident_si7018_capture_prepare,
2062 	.trigger =	snd_trident_trigger,
2063 	.pointer =	snd_trident_playback_pointer,
2064 };
2065 
2066 static const struct snd_pcm_ops snd_trident_foldback_ops = {
2067 	.open =		snd_trident_foldback_open,
2068 	.close =	snd_trident_foldback_close,
2069 	.hw_params =	snd_trident_hw_params,
2070 	.hw_free =	snd_trident_hw_free,
2071 	.prepare =	snd_trident_foldback_prepare,
2072 	.trigger =	snd_trident_trigger,
2073 	.pointer =	snd_trident_playback_pointer,
2074 };
2075 
2076 static const struct snd_pcm_ops snd_trident_nx_foldback_ops = {
2077 	.open =		snd_trident_foldback_open,
2078 	.close =	snd_trident_foldback_close,
2079 	.hw_params =	snd_trident_hw_params,
2080 	.hw_free =	snd_trident_hw_free,
2081 	.prepare =	snd_trident_foldback_prepare,
2082 	.trigger =	snd_trident_trigger,
2083 	.pointer =	snd_trident_playback_pointer,
2084 };
2085 
2086 static const struct snd_pcm_ops snd_trident_spdif_ops = {
2087 	.open =		snd_trident_spdif_open,
2088 	.close =	snd_trident_spdif_close,
2089 	.hw_params =	snd_trident_spdif_hw_params,
2090 	.hw_free =	snd_trident_hw_free,
2091 	.prepare =	snd_trident_spdif_prepare,
2092 	.trigger =	snd_trident_trigger,
2093 	.pointer =	snd_trident_spdif_pointer,
2094 };
2095 
2096 static const struct snd_pcm_ops snd_trident_spdif_7018_ops = {
2097 	.open =		snd_trident_spdif_open,
2098 	.close =	snd_trident_spdif_close,
2099 	.hw_params =	snd_trident_spdif_hw_params,
2100 	.hw_free =	snd_trident_hw_free,
2101 	.prepare =	snd_trident_spdif_prepare,
2102 	.trigger =	snd_trident_trigger,
2103 	.pointer =	snd_trident_playback_pointer,
2104 };
2105 
2106 /*---------------------------------------------------------------------------
2107    snd_trident_pcm
2108 
2109    Description: This routine registers the 4DWave device for PCM support.
2110 
2111    Parameters:  trident - pointer to target device class for 4DWave.
2112 
2113    Returns:     None
2114 
2115   ---------------------------------------------------------------------------*/
2116 
2117 int snd_trident_pcm(struct snd_trident *trident, int device)
2118 {
2119 	struct snd_pcm *pcm;
2120 	int err;
2121 
2122 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx", device, trident->ChanPCM, 1, &pcm)) < 0)
2123 		return err;
2124 
2125 	pcm->private_data = trident;
2126 
2127 	if (trident->tlb.entries) {
2128 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_nx_playback_ops);
2129 	} else {
2130 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_playback_ops);
2131 	}
2132 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
2133 			trident->device != TRIDENT_DEVICE_ID_SI7018 ?
2134 			&snd_trident_capture_ops :
2135 			&snd_trident_si7018_capture_ops);
2136 
2137 	pcm->info_flags = 0;
2138 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
2139 	strcpy(pcm->name, "Trident 4DWave");
2140 	trident->pcm = pcm;
2141 
2142 	if (trident->tlb.entries) {
2143 		struct snd_pcm_substream *substream;
2144 		for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
2145 			snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV_SG,
2146 						   &trident->pci->dev,
2147 						   64*1024, 128*1024);
2148 		snd_pcm_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
2149 					   SNDRV_DMA_TYPE_DEV,
2150 					   &trident->pci->dev,
2151 					   64*1024, 128*1024);
2152 	} else {
2153 		snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
2154 					       &trident->pci->dev,
2155 					       64*1024, 128*1024);
2156 	}
2157 
2158 	return 0;
2159 }
2160 
2161 /*---------------------------------------------------------------------------
2162    snd_trident_foldback_pcm
2163 
2164    Description: This routine registers the 4DWave device for foldback PCM support.
2165 
2166    Parameters:  trident - pointer to target device class for 4DWave.
2167 
2168    Returns:     None
2169 
2170   ---------------------------------------------------------------------------*/
2171 
2172 int snd_trident_foldback_pcm(struct snd_trident *trident, int device)
2173 {
2174 	struct snd_pcm *foldback;
2175 	int err;
2176 	int num_chan = 3;
2177 	struct snd_pcm_substream *substream;
2178 
2179 	if (trident->device == TRIDENT_DEVICE_ID_NX)
2180 		num_chan = 4;
2181 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx", device, 0, num_chan, &foldback)) < 0)
2182 		return err;
2183 
2184 	foldback->private_data = trident;
2185 	if (trident->tlb.entries)
2186 		snd_pcm_set_ops(foldback, SNDRV_PCM_STREAM_CAPTURE, &snd_trident_nx_foldback_ops);
2187 	else
2188 		snd_pcm_set_ops(foldback, SNDRV_PCM_STREAM_CAPTURE, &snd_trident_foldback_ops);
2189 	foldback->info_flags = 0;
2190 	strcpy(foldback->name, "Trident 4DWave");
2191 	substream = foldback->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
2192 	strcpy(substream->name, "Front Mixer");
2193 	substream = substream->next;
2194 	strcpy(substream->name, "Reverb Mixer");
2195 	substream = substream->next;
2196 	strcpy(substream->name, "Chorus Mixer");
2197 	if (num_chan == 4) {
2198 		substream = substream->next;
2199 		strcpy(substream->name, "Second AC'97 ADC");
2200 	}
2201 	trident->foldback = foldback;
2202 
2203 	if (trident->tlb.entries)
2204 		snd_pcm_set_managed_buffer_all(foldback, SNDRV_DMA_TYPE_DEV_SG,
2205 					       &trident->pci->dev,
2206 					       0, 128*1024);
2207 	else
2208 		snd_pcm_set_managed_buffer_all(foldback, SNDRV_DMA_TYPE_DEV,
2209 					       &trident->pci->dev,
2210 					       64*1024, 128*1024);
2211 
2212 	return 0;
2213 }
2214 
2215 /*---------------------------------------------------------------------------
2216    snd_trident_spdif
2217 
2218    Description: This routine registers the 4DWave-NX device for SPDIF support.
2219 
2220    Parameters:  trident - pointer to target device class for 4DWave-NX.
2221 
2222    Returns:     None
2223 
2224   ---------------------------------------------------------------------------*/
2225 
2226 int snd_trident_spdif_pcm(struct snd_trident *trident, int device)
2227 {
2228 	struct snd_pcm *spdif;
2229 	int err;
2230 
2231 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx IEC958", device, 1, 0, &spdif)) < 0)
2232 		return err;
2233 
2234 	spdif->private_data = trident;
2235 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2236 		snd_pcm_set_ops(spdif, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_spdif_ops);
2237 	} else {
2238 		snd_pcm_set_ops(spdif, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_spdif_7018_ops);
2239 	}
2240 	spdif->info_flags = 0;
2241 	strcpy(spdif->name, "Trident 4DWave IEC958");
2242 	trident->spdif = spdif;
2243 
2244 	snd_pcm_set_managed_buffer_all(spdif, SNDRV_DMA_TYPE_DEV,
2245 				       &trident->pci->dev, 64*1024, 128*1024);
2246 
2247 	return 0;
2248 }
2249 
2250 /*
2251  *  Mixer part
2252  */
2253 
2254 
2255 /*---------------------------------------------------------------------------
2256     snd_trident_spdif_control
2257 
2258     Description: enable/disable S/PDIF out from ac97 mixer
2259   ---------------------------------------------------------------------------*/
2260 
2261 #define snd_trident_spdif_control_info	snd_ctl_boolean_mono_info
2262 
2263 static int snd_trident_spdif_control_get(struct snd_kcontrol *kcontrol,
2264 					 struct snd_ctl_elem_value *ucontrol)
2265 {
2266 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2267 	unsigned char val;
2268 
2269 	spin_lock_irq(&trident->reg_lock);
2270 	val = trident->spdif_ctrl;
2271 	ucontrol->value.integer.value[0] = val == kcontrol->private_value;
2272 	spin_unlock_irq(&trident->reg_lock);
2273 	return 0;
2274 }
2275 
2276 static int snd_trident_spdif_control_put(struct snd_kcontrol *kcontrol,
2277 					 struct snd_ctl_elem_value *ucontrol)
2278 {
2279 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2280 	unsigned char val;
2281 	int change;
2282 
2283 	val = ucontrol->value.integer.value[0] ? (unsigned char) kcontrol->private_value : 0x00;
2284 	spin_lock_irq(&trident->reg_lock);
2285 	/* S/PDIF C Channel bits 0-31 : 48khz, SCMS disabled */
2286 	change = trident->spdif_ctrl != val;
2287 	trident->spdif_ctrl = val;
2288 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2289 		if ((inb(TRID_REG(trident, NX_SPCTRL_SPCSO + 3)) & 0x10) == 0) {
2290 			outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
2291 			outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
2292 		}
2293 	} else {
2294 		if (trident->spdif == NULL) {
2295 			unsigned int temp;
2296 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2297 			temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & ~SPDIF_EN;
2298 			if (val)
2299 				temp |= SPDIF_EN;
2300 			outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
2301 		}
2302 	}
2303 	spin_unlock_irq(&trident->reg_lock);
2304 	return change;
2305 }
2306 
2307 static const struct snd_kcontrol_new snd_trident_spdif_control =
2308 {
2309 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2310 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),
2311 	.info =		snd_trident_spdif_control_info,
2312 	.get =		snd_trident_spdif_control_get,
2313 	.put =		snd_trident_spdif_control_put,
2314 	.private_value = 0x28,
2315 };
2316 
2317 /*---------------------------------------------------------------------------
2318     snd_trident_spdif_default
2319 
2320     Description: put/get the S/PDIF default settings
2321   ---------------------------------------------------------------------------*/
2322 
2323 static int snd_trident_spdif_default_info(struct snd_kcontrol *kcontrol,
2324 					  struct snd_ctl_elem_info *uinfo)
2325 {
2326 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2327 	uinfo->count = 1;
2328 	return 0;
2329 }
2330 
2331 static int snd_trident_spdif_default_get(struct snd_kcontrol *kcontrol,
2332 					 struct snd_ctl_elem_value *ucontrol)
2333 {
2334 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2335 
2336 	spin_lock_irq(&trident->reg_lock);
2337 	ucontrol->value.iec958.status[0] = (trident->spdif_bits >> 0) & 0xff;
2338 	ucontrol->value.iec958.status[1] = (trident->spdif_bits >> 8) & 0xff;
2339 	ucontrol->value.iec958.status[2] = (trident->spdif_bits >> 16) & 0xff;
2340 	ucontrol->value.iec958.status[3] = (trident->spdif_bits >> 24) & 0xff;
2341 	spin_unlock_irq(&trident->reg_lock);
2342 	return 0;
2343 }
2344 
2345 static int snd_trident_spdif_default_put(struct snd_kcontrol *kcontrol,
2346 					 struct snd_ctl_elem_value *ucontrol)
2347 {
2348 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2349 	unsigned int val;
2350 	int change;
2351 
2352 	val = (ucontrol->value.iec958.status[0] << 0) |
2353 	      (ucontrol->value.iec958.status[1] << 8) |
2354 	      (ucontrol->value.iec958.status[2] << 16) |
2355 	      (ucontrol->value.iec958.status[3] << 24);
2356 	spin_lock_irq(&trident->reg_lock);
2357 	change = trident->spdif_bits != val;
2358 	trident->spdif_bits = val;
2359 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2360 		if ((inb(TRID_REG(trident, NX_SPCTRL_SPCSO + 3)) & 0x10) == 0)
2361 			outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
2362 	} else {
2363 		if (trident->spdif == NULL)
2364 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2365 	}
2366 	spin_unlock_irq(&trident->reg_lock);
2367 	return change;
2368 }
2369 
2370 static const struct snd_kcontrol_new snd_trident_spdif_default =
2371 {
2372 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2373 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2374 	.info =		snd_trident_spdif_default_info,
2375 	.get =		snd_trident_spdif_default_get,
2376 	.put =		snd_trident_spdif_default_put
2377 };
2378 
2379 /*---------------------------------------------------------------------------
2380     snd_trident_spdif_mask
2381 
2382     Description: put/get the S/PDIF mask
2383   ---------------------------------------------------------------------------*/
2384 
2385 static int snd_trident_spdif_mask_info(struct snd_kcontrol *kcontrol,
2386 				       struct snd_ctl_elem_info *uinfo)
2387 {
2388 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2389 	uinfo->count = 1;
2390 	return 0;
2391 }
2392 
2393 static int snd_trident_spdif_mask_get(struct snd_kcontrol *kcontrol,
2394 				      struct snd_ctl_elem_value *ucontrol)
2395 {
2396 	ucontrol->value.iec958.status[0] = 0xff;
2397 	ucontrol->value.iec958.status[1] = 0xff;
2398 	ucontrol->value.iec958.status[2] = 0xff;
2399 	ucontrol->value.iec958.status[3] = 0xff;
2400 	return 0;
2401 }
2402 
2403 static const struct snd_kcontrol_new snd_trident_spdif_mask =
2404 {
2405 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2406 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2407 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
2408 	.info =		snd_trident_spdif_mask_info,
2409 	.get =		snd_trident_spdif_mask_get,
2410 };
2411 
2412 /*---------------------------------------------------------------------------
2413     snd_trident_spdif_stream
2414 
2415     Description: put/get the S/PDIF stream settings
2416   ---------------------------------------------------------------------------*/
2417 
2418 static int snd_trident_spdif_stream_info(struct snd_kcontrol *kcontrol,
2419 					 struct snd_ctl_elem_info *uinfo)
2420 {
2421 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2422 	uinfo->count = 1;
2423 	return 0;
2424 }
2425 
2426 static int snd_trident_spdif_stream_get(struct snd_kcontrol *kcontrol,
2427 					struct snd_ctl_elem_value *ucontrol)
2428 {
2429 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2430 
2431 	spin_lock_irq(&trident->reg_lock);
2432 	ucontrol->value.iec958.status[0] = (trident->spdif_pcm_bits >> 0) & 0xff;
2433 	ucontrol->value.iec958.status[1] = (trident->spdif_pcm_bits >> 8) & 0xff;
2434 	ucontrol->value.iec958.status[2] = (trident->spdif_pcm_bits >> 16) & 0xff;
2435 	ucontrol->value.iec958.status[3] = (trident->spdif_pcm_bits >> 24) & 0xff;
2436 	spin_unlock_irq(&trident->reg_lock);
2437 	return 0;
2438 }
2439 
2440 static int snd_trident_spdif_stream_put(struct snd_kcontrol *kcontrol,
2441 					struct snd_ctl_elem_value *ucontrol)
2442 {
2443 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2444 	unsigned int val;
2445 	int change;
2446 
2447 	val = (ucontrol->value.iec958.status[0] << 0) |
2448 	      (ucontrol->value.iec958.status[1] << 8) |
2449 	      (ucontrol->value.iec958.status[2] << 16) |
2450 	      (ucontrol->value.iec958.status[3] << 24);
2451 	spin_lock_irq(&trident->reg_lock);
2452 	change = trident->spdif_pcm_bits != val;
2453 	trident->spdif_pcm_bits = val;
2454 	if (trident->spdif != NULL) {
2455 		if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2456 			outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
2457 		} else {
2458 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2459 		}
2460 	}
2461 	spin_unlock_irq(&trident->reg_lock);
2462 	return change;
2463 }
2464 
2465 static const struct snd_kcontrol_new snd_trident_spdif_stream =
2466 {
2467 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2468 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2469 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2470 	.info =		snd_trident_spdif_stream_info,
2471 	.get =		snd_trident_spdif_stream_get,
2472 	.put =		snd_trident_spdif_stream_put
2473 };
2474 
2475 /*---------------------------------------------------------------------------
2476     snd_trident_ac97_control
2477 
2478     Description: enable/disable rear path for ac97
2479   ---------------------------------------------------------------------------*/
2480 
2481 #define snd_trident_ac97_control_info	snd_ctl_boolean_mono_info
2482 
2483 static int snd_trident_ac97_control_get(struct snd_kcontrol *kcontrol,
2484 					struct snd_ctl_elem_value *ucontrol)
2485 {
2486 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2487 	unsigned char val;
2488 
2489 	spin_lock_irq(&trident->reg_lock);
2490 	val = trident->ac97_ctrl = inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2491 	ucontrol->value.integer.value[0] = (val & (1 << kcontrol->private_value)) ? 1 : 0;
2492 	spin_unlock_irq(&trident->reg_lock);
2493 	return 0;
2494 }
2495 
2496 static int snd_trident_ac97_control_put(struct snd_kcontrol *kcontrol,
2497 					struct snd_ctl_elem_value *ucontrol)
2498 {
2499 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2500 	unsigned char val;
2501 	int change = 0;
2502 
2503 	spin_lock_irq(&trident->reg_lock);
2504 	val = trident->ac97_ctrl = inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2505 	val &= ~(1 << kcontrol->private_value);
2506 	if (ucontrol->value.integer.value[0])
2507 		val |= 1 << kcontrol->private_value;
2508 	change = val != trident->ac97_ctrl;
2509 	trident->ac97_ctrl = val;
2510 	outl(trident->ac97_ctrl = val, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2511 	spin_unlock_irq(&trident->reg_lock);
2512 	return change;
2513 }
2514 
2515 static const struct snd_kcontrol_new snd_trident_ac97_rear_control =
2516 {
2517 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2518 	.name =         "Rear Path",
2519 	.info =		snd_trident_ac97_control_info,
2520 	.get =		snd_trident_ac97_control_get,
2521 	.put =		snd_trident_ac97_control_put,
2522 	.private_value = 4,
2523 };
2524 
2525 /*---------------------------------------------------------------------------
2526     snd_trident_vol_control
2527 
2528     Description: wave & music volume control
2529   ---------------------------------------------------------------------------*/
2530 
2531 static int snd_trident_vol_control_info(struct snd_kcontrol *kcontrol,
2532 					struct snd_ctl_elem_info *uinfo)
2533 {
2534 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2535 	uinfo->count = 2;
2536 	uinfo->value.integer.min = 0;
2537 	uinfo->value.integer.max = 255;
2538 	return 0;
2539 }
2540 
2541 static int snd_trident_vol_control_get(struct snd_kcontrol *kcontrol,
2542 				       struct snd_ctl_elem_value *ucontrol)
2543 {
2544 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2545 	unsigned int val;
2546 
2547 	val = trident->musicvol_wavevol;
2548 	ucontrol->value.integer.value[0] = 255 - ((val >> kcontrol->private_value) & 0xff);
2549 	ucontrol->value.integer.value[1] = 255 - ((val >> (kcontrol->private_value + 8)) & 0xff);
2550 	return 0;
2551 }
2552 
2553 static const DECLARE_TLV_DB_SCALE(db_scale_gvol, -6375, 25, 0);
2554 
2555 static int snd_trident_vol_control_put(struct snd_kcontrol *kcontrol,
2556 				       struct snd_ctl_elem_value *ucontrol)
2557 {
2558 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2559 	unsigned int val;
2560 	int change = 0;
2561 
2562 	spin_lock_irq(&trident->reg_lock);
2563 	val = trident->musicvol_wavevol;
2564 	val &= ~(0xffff << kcontrol->private_value);
2565 	val |= ((255 - (ucontrol->value.integer.value[0] & 0xff)) |
2566 	        ((255 - (ucontrol->value.integer.value[1] & 0xff)) << 8)) << kcontrol->private_value;
2567 	change = val != trident->musicvol_wavevol;
2568 	outl(trident->musicvol_wavevol = val, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
2569 	spin_unlock_irq(&trident->reg_lock);
2570 	return change;
2571 }
2572 
2573 static const struct snd_kcontrol_new snd_trident_vol_music_control =
2574 {
2575 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2576 	.name =         "Music Playback Volume",
2577 	.info =		snd_trident_vol_control_info,
2578 	.get =		snd_trident_vol_control_get,
2579 	.put =		snd_trident_vol_control_put,
2580 	.private_value = 16,
2581 	.tlv = { .p = db_scale_gvol },
2582 };
2583 
2584 static const struct snd_kcontrol_new snd_trident_vol_wave_control =
2585 {
2586 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2587 	.name =         "Wave Playback Volume",
2588 	.info =		snd_trident_vol_control_info,
2589 	.get =		snd_trident_vol_control_get,
2590 	.put =		snd_trident_vol_control_put,
2591 	.private_value = 0,
2592 	.tlv = { .p = db_scale_gvol },
2593 };
2594 
2595 /*---------------------------------------------------------------------------
2596     snd_trident_pcm_vol_control
2597 
2598     Description: PCM front volume control
2599   ---------------------------------------------------------------------------*/
2600 
2601 static int snd_trident_pcm_vol_control_info(struct snd_kcontrol *kcontrol,
2602 					    struct snd_ctl_elem_info *uinfo)
2603 {
2604 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2605 
2606 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2607 	uinfo->count = 1;
2608 	uinfo->value.integer.min = 0;
2609 	uinfo->value.integer.max = 255;
2610 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
2611 		uinfo->value.integer.max = 1023;
2612 	return 0;
2613 }
2614 
2615 static int snd_trident_pcm_vol_control_get(struct snd_kcontrol *kcontrol,
2616 					   struct snd_ctl_elem_value *ucontrol)
2617 {
2618 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2619 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2620 
2621 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2622 		ucontrol->value.integer.value[0] = 1023 - mix->vol;
2623 	} else {
2624 		ucontrol->value.integer.value[0] = 255 - (mix->vol>>2);
2625 	}
2626 	return 0;
2627 }
2628 
2629 static int snd_trident_pcm_vol_control_put(struct snd_kcontrol *kcontrol,
2630 					   struct snd_ctl_elem_value *ucontrol)
2631 {
2632 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2633 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2634 	unsigned int val;
2635 	int change = 0;
2636 
2637 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2638 		val = 1023 - (ucontrol->value.integer.value[0] & 1023);
2639 	} else {
2640 		val = (255 - (ucontrol->value.integer.value[0] & 255)) << 2;
2641 	}
2642 	spin_lock_irq(&trident->reg_lock);
2643 	change = val != mix->vol;
2644 	mix->vol = val;
2645 	if (mix->voice != NULL)
2646 		snd_trident_write_vol_reg(trident, mix->voice, val);
2647 	spin_unlock_irq(&trident->reg_lock);
2648 	return change;
2649 }
2650 
2651 static const struct snd_kcontrol_new snd_trident_pcm_vol_control =
2652 {
2653 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2654 	.name =         "PCM Front Playback Volume",
2655 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2656 	.count =	32,
2657 	.info =		snd_trident_pcm_vol_control_info,
2658 	.get =		snd_trident_pcm_vol_control_get,
2659 	.put =		snd_trident_pcm_vol_control_put,
2660 	/* FIXME: no tlv yet */
2661 };
2662 
2663 /*---------------------------------------------------------------------------
2664     snd_trident_pcm_pan_control
2665 
2666     Description: PCM front pan control
2667   ---------------------------------------------------------------------------*/
2668 
2669 static int snd_trident_pcm_pan_control_info(struct snd_kcontrol *kcontrol,
2670 					    struct snd_ctl_elem_info *uinfo)
2671 {
2672 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2673 	uinfo->count = 1;
2674 	uinfo->value.integer.min = 0;
2675 	uinfo->value.integer.max = 127;
2676 	return 0;
2677 }
2678 
2679 static int snd_trident_pcm_pan_control_get(struct snd_kcontrol *kcontrol,
2680 					   struct snd_ctl_elem_value *ucontrol)
2681 {
2682 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2683 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2684 
2685 	ucontrol->value.integer.value[0] = mix->pan;
2686 	if (ucontrol->value.integer.value[0] & 0x40) {
2687 		ucontrol->value.integer.value[0] = (0x3f - (ucontrol->value.integer.value[0] & 0x3f));
2688 	} else {
2689 		ucontrol->value.integer.value[0] |= 0x40;
2690 	}
2691 	return 0;
2692 }
2693 
2694 static int snd_trident_pcm_pan_control_put(struct snd_kcontrol *kcontrol,
2695 					   struct snd_ctl_elem_value *ucontrol)
2696 {
2697 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2698 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2699 	unsigned char val;
2700 	int change = 0;
2701 
2702 	if (ucontrol->value.integer.value[0] & 0x40)
2703 		val = ucontrol->value.integer.value[0] & 0x3f;
2704 	else
2705 		val = (0x3f - (ucontrol->value.integer.value[0] & 0x3f)) | 0x40;
2706 	spin_lock_irq(&trident->reg_lock);
2707 	change = val != mix->pan;
2708 	mix->pan = val;
2709 	if (mix->voice != NULL)
2710 		snd_trident_write_pan_reg(trident, mix->voice, val);
2711 	spin_unlock_irq(&trident->reg_lock);
2712 	return change;
2713 }
2714 
2715 static const struct snd_kcontrol_new snd_trident_pcm_pan_control =
2716 {
2717 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2718 	.name =         "PCM Pan Playback Control",
2719 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2720 	.count =	32,
2721 	.info =		snd_trident_pcm_pan_control_info,
2722 	.get =		snd_trident_pcm_pan_control_get,
2723 	.put =		snd_trident_pcm_pan_control_put,
2724 };
2725 
2726 /*---------------------------------------------------------------------------
2727     snd_trident_pcm_rvol_control
2728 
2729     Description: PCM reverb volume control
2730   ---------------------------------------------------------------------------*/
2731 
2732 static int snd_trident_pcm_rvol_control_info(struct snd_kcontrol *kcontrol,
2733 					     struct snd_ctl_elem_info *uinfo)
2734 {
2735 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2736 	uinfo->count = 1;
2737 	uinfo->value.integer.min = 0;
2738 	uinfo->value.integer.max = 127;
2739 	return 0;
2740 }
2741 
2742 static int snd_trident_pcm_rvol_control_get(struct snd_kcontrol *kcontrol,
2743 					    struct snd_ctl_elem_value *ucontrol)
2744 {
2745 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2746 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2747 
2748 	ucontrol->value.integer.value[0] = 127 - mix->rvol;
2749 	return 0;
2750 }
2751 
2752 static int snd_trident_pcm_rvol_control_put(struct snd_kcontrol *kcontrol,
2753 					    struct snd_ctl_elem_value *ucontrol)
2754 {
2755 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2756 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2757 	unsigned short val;
2758 	int change = 0;
2759 
2760 	val = 0x7f - (ucontrol->value.integer.value[0] & 0x7f);
2761 	spin_lock_irq(&trident->reg_lock);
2762 	change = val != mix->rvol;
2763 	mix->rvol = val;
2764 	if (mix->voice != NULL)
2765 		snd_trident_write_rvol_reg(trident, mix->voice, val);
2766 	spin_unlock_irq(&trident->reg_lock);
2767 	return change;
2768 }
2769 
2770 static const DECLARE_TLV_DB_SCALE(db_scale_crvol, -3175, 25, 1);
2771 
2772 static const struct snd_kcontrol_new snd_trident_pcm_rvol_control =
2773 {
2774 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2775 	.name =         "PCM Reverb Playback Volume",
2776 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2777 	.count = 	32,
2778 	.info =		snd_trident_pcm_rvol_control_info,
2779 	.get =		snd_trident_pcm_rvol_control_get,
2780 	.put =		snd_trident_pcm_rvol_control_put,
2781 	.tlv = { .p = db_scale_crvol },
2782 };
2783 
2784 /*---------------------------------------------------------------------------
2785     snd_trident_pcm_cvol_control
2786 
2787     Description: PCM chorus volume control
2788   ---------------------------------------------------------------------------*/
2789 
2790 static int snd_trident_pcm_cvol_control_info(struct snd_kcontrol *kcontrol,
2791 					     struct snd_ctl_elem_info *uinfo)
2792 {
2793 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2794 	uinfo->count = 1;
2795 	uinfo->value.integer.min = 0;
2796 	uinfo->value.integer.max = 127;
2797 	return 0;
2798 }
2799 
2800 static int snd_trident_pcm_cvol_control_get(struct snd_kcontrol *kcontrol,
2801 					    struct snd_ctl_elem_value *ucontrol)
2802 {
2803 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2804 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2805 
2806 	ucontrol->value.integer.value[0] = 127 - mix->cvol;
2807 	return 0;
2808 }
2809 
2810 static int snd_trident_pcm_cvol_control_put(struct snd_kcontrol *kcontrol,
2811 					    struct snd_ctl_elem_value *ucontrol)
2812 {
2813 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2814 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2815 	unsigned short val;
2816 	int change = 0;
2817 
2818 	val = 0x7f - (ucontrol->value.integer.value[0] & 0x7f);
2819 	spin_lock_irq(&trident->reg_lock);
2820 	change = val != mix->cvol;
2821 	mix->cvol = val;
2822 	if (mix->voice != NULL)
2823 		snd_trident_write_cvol_reg(trident, mix->voice, val);
2824 	spin_unlock_irq(&trident->reg_lock);
2825 	return change;
2826 }
2827 
2828 static const struct snd_kcontrol_new snd_trident_pcm_cvol_control =
2829 {
2830 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2831 	.name =         "PCM Chorus Playback Volume",
2832 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2833 	.count =	32,
2834 	.info =		snd_trident_pcm_cvol_control_info,
2835 	.get =		snd_trident_pcm_cvol_control_get,
2836 	.put =		snd_trident_pcm_cvol_control_put,
2837 	.tlv = { .p = db_scale_crvol },
2838 };
2839 
2840 static void snd_trident_notify_pcm_change1(struct snd_card *card,
2841 					   struct snd_kcontrol *kctl,
2842 					   int num, int activate)
2843 {
2844 	struct snd_ctl_elem_id id;
2845 
2846 	if (! kctl)
2847 		return;
2848 	if (activate)
2849 		kctl->vd[num].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2850 	else
2851 		kctl->vd[num].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2852 	snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE |
2853 		       SNDRV_CTL_EVENT_MASK_INFO,
2854 		       snd_ctl_build_ioff(&id, kctl, num));
2855 }
2856 
2857 static void snd_trident_notify_pcm_change(struct snd_trident *trident,
2858 					  struct snd_trident_pcm_mixer *tmix,
2859 					  int num, int activate)
2860 {
2861 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_vol, num, activate);
2862 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_pan, num, activate);
2863 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_rvol, num, activate);
2864 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_cvol, num, activate);
2865 }
2866 
2867 static int snd_trident_pcm_mixer_build(struct snd_trident *trident,
2868 				       struct snd_trident_voice *voice,
2869 				       struct snd_pcm_substream *substream)
2870 {
2871 	struct snd_trident_pcm_mixer *tmix;
2872 
2873 	if (snd_BUG_ON(!trident || !voice || !substream))
2874 		return -EINVAL;
2875 	tmix = &trident->pcm_mixer[substream->number];
2876 	tmix->voice = voice;
2877 	tmix->vol = T4D_DEFAULT_PCM_VOL;
2878 	tmix->pan = T4D_DEFAULT_PCM_PAN;
2879 	tmix->rvol = T4D_DEFAULT_PCM_RVOL;
2880 	tmix->cvol = T4D_DEFAULT_PCM_CVOL;
2881 	snd_trident_notify_pcm_change(trident, tmix, substream->number, 1);
2882 	return 0;
2883 }
2884 
2885 static int snd_trident_pcm_mixer_free(struct snd_trident *trident, struct snd_trident_voice *voice, struct snd_pcm_substream *substream)
2886 {
2887 	struct snd_trident_pcm_mixer *tmix;
2888 
2889 	if (snd_BUG_ON(!trident || !substream))
2890 		return -EINVAL;
2891 	tmix = &trident->pcm_mixer[substream->number];
2892 	tmix->voice = NULL;
2893 	snd_trident_notify_pcm_change(trident, tmix, substream->number, 0);
2894 	return 0;
2895 }
2896 
2897 /*---------------------------------------------------------------------------
2898    snd_trident_mixer
2899 
2900    Description: This routine registers the 4DWave device for mixer support.
2901 
2902    Parameters:  trident - pointer to target device class for 4DWave.
2903 
2904    Returns:     None
2905 
2906   ---------------------------------------------------------------------------*/
2907 
2908 static int snd_trident_mixer(struct snd_trident *trident, int pcm_spdif_device)
2909 {
2910 	struct snd_ac97_template _ac97;
2911 	struct snd_card *card = trident->card;
2912 	struct snd_kcontrol *kctl;
2913 	struct snd_ctl_elem_value *uctl;
2914 	int idx, err, retries = 2;
2915 	static const struct snd_ac97_bus_ops ops = {
2916 		.write = snd_trident_codec_write,
2917 		.read = snd_trident_codec_read,
2918 	};
2919 
2920 	uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
2921 	if (!uctl)
2922 		return -ENOMEM;
2923 
2924 	if ((err = snd_ac97_bus(trident->card, 0, &ops, NULL, &trident->ac97_bus)) < 0)
2925 		goto __out;
2926 
2927 	memset(&_ac97, 0, sizeof(_ac97));
2928 	_ac97.private_data = trident;
2929 	trident->ac97_detect = 1;
2930 
2931       __again:
2932 	if ((err = snd_ac97_mixer(trident->ac97_bus, &_ac97, &trident->ac97)) < 0) {
2933 		if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2934 			if ((err = snd_trident_sis_reset(trident)) < 0)
2935 				goto __out;
2936 			if (retries-- > 0)
2937 				goto __again;
2938 			err = -EIO;
2939 		}
2940 		goto __out;
2941 	}
2942 
2943 	/* secondary codec? */
2944 	if (trident->device == TRIDENT_DEVICE_ID_SI7018 &&
2945 	    (inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_PRIMARY_READY) != 0) {
2946 		_ac97.num = 1;
2947 		err = snd_ac97_mixer(trident->ac97_bus, &_ac97, &trident->ac97_sec);
2948 		if (err < 0)
2949 			dev_err(trident->card->dev,
2950 				"SI7018: the secondary codec - invalid access\n");
2951 #if 0	// only for my testing purpose --jk
2952 		{
2953 			struct snd_ac97 *mc97;
2954 			err = snd_ac97_modem(trident->card, &_ac97, &mc97);
2955 			if (err < 0)
2956 				dev_err(trident->card->dev,
2957 					"snd_ac97_modem returned error %i\n", err);
2958 		}
2959 #endif
2960 	}
2961 
2962 	trident->ac97_detect = 0;
2963 
2964 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2965 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_vol_wave_control, trident))) < 0)
2966 			goto __out;
2967 		kctl->put(kctl, uctl);
2968 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_vol_music_control, trident))) < 0)
2969 			goto __out;
2970 		kctl->put(kctl, uctl);
2971 		outl(trident->musicvol_wavevol = 0x00000000, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
2972 	} else {
2973 		outl(trident->musicvol_wavevol = 0xffff0000, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
2974 	}
2975 
2976 	for (idx = 0; idx < 32; idx++) {
2977 		struct snd_trident_pcm_mixer *tmix;
2978 
2979 		tmix = &trident->pcm_mixer[idx];
2980 		tmix->voice = NULL;
2981 	}
2982 	if ((trident->ctl_vol = snd_ctl_new1(&snd_trident_pcm_vol_control, trident)) == NULL)
2983 		goto __nomem;
2984 	if ((err = snd_ctl_add(card, trident->ctl_vol)))
2985 		goto __out;
2986 
2987 	if ((trident->ctl_pan = snd_ctl_new1(&snd_trident_pcm_pan_control, trident)) == NULL)
2988 		goto __nomem;
2989 	if ((err = snd_ctl_add(card, trident->ctl_pan)))
2990 		goto __out;
2991 
2992 	if ((trident->ctl_rvol = snd_ctl_new1(&snd_trident_pcm_rvol_control, trident)) == NULL)
2993 		goto __nomem;
2994 	if ((err = snd_ctl_add(card, trident->ctl_rvol)))
2995 		goto __out;
2996 
2997 	if ((trident->ctl_cvol = snd_ctl_new1(&snd_trident_pcm_cvol_control, trident)) == NULL)
2998 		goto __nomem;
2999 	if ((err = snd_ctl_add(card, trident->ctl_cvol)))
3000 		goto __out;
3001 
3002 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3003 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_ac97_rear_control, trident))) < 0)
3004 			goto __out;
3005 		kctl->put(kctl, uctl);
3006 	}
3007 	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018) {
3008 
3009 		kctl = snd_ctl_new1(&snd_trident_spdif_control, trident);
3010 		if (kctl == NULL) {
3011 			err = -ENOMEM;
3012 			goto __out;
3013 		}
3014 		if (trident->ac97->ext_id & AC97_EI_SPDIF)
3015 			kctl->id.index++;
3016 		if (trident->ac97_sec && (trident->ac97_sec->ext_id & AC97_EI_SPDIF))
3017 			kctl->id.index++;
3018 		idx = kctl->id.index;
3019 		if ((err = snd_ctl_add(card, kctl)) < 0)
3020 			goto __out;
3021 		kctl->put(kctl, uctl);
3022 
3023 		kctl = snd_ctl_new1(&snd_trident_spdif_default, trident);
3024 		if (kctl == NULL) {
3025 			err = -ENOMEM;
3026 			goto __out;
3027 		}
3028 		kctl->id.index = idx;
3029 		kctl->id.device = pcm_spdif_device;
3030 		if ((err = snd_ctl_add(card, kctl)) < 0)
3031 			goto __out;
3032 
3033 		kctl = snd_ctl_new1(&snd_trident_spdif_mask, trident);
3034 		if (kctl == NULL) {
3035 			err = -ENOMEM;
3036 			goto __out;
3037 		}
3038 		kctl->id.index = idx;
3039 		kctl->id.device = pcm_spdif_device;
3040 		if ((err = snd_ctl_add(card, kctl)) < 0)
3041 			goto __out;
3042 
3043 		kctl = snd_ctl_new1(&snd_trident_spdif_stream, trident);
3044 		if (kctl == NULL) {
3045 			err = -ENOMEM;
3046 			goto __out;
3047 		}
3048 		kctl->id.index = idx;
3049 		kctl->id.device = pcm_spdif_device;
3050 		if ((err = snd_ctl_add(card, kctl)) < 0)
3051 			goto __out;
3052 		trident->spdif_pcm_ctl = kctl;
3053 	}
3054 
3055 	err = 0;
3056 	goto __out;
3057 
3058  __nomem:
3059 	err = -ENOMEM;
3060 
3061  __out:
3062 	kfree(uctl);
3063 
3064 	return err;
3065 }
3066 
3067 /*
3068  * gameport interface
3069  */
3070 
3071 #if IS_REACHABLE(CONFIG_GAMEPORT)
3072 
3073 static unsigned char snd_trident_gameport_read(struct gameport *gameport)
3074 {
3075 	struct snd_trident *chip = gameport_get_port_data(gameport);
3076 
3077 	if (snd_BUG_ON(!chip))
3078 		return 0;
3079 	return inb(TRID_REG(chip, GAMEPORT_LEGACY));
3080 }
3081 
3082 static void snd_trident_gameport_trigger(struct gameport *gameport)
3083 {
3084 	struct snd_trident *chip = gameport_get_port_data(gameport);
3085 
3086 	if (snd_BUG_ON(!chip))
3087 		return;
3088 	outb(0xff, TRID_REG(chip, GAMEPORT_LEGACY));
3089 }
3090 
3091 static int snd_trident_gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons)
3092 {
3093 	struct snd_trident *chip = gameport_get_port_data(gameport);
3094 	int i;
3095 
3096 	if (snd_BUG_ON(!chip))
3097 		return 0;
3098 
3099 	*buttons = (~inb(TRID_REG(chip, GAMEPORT_LEGACY)) >> 4) & 0xf;
3100 
3101 	for (i = 0; i < 4; i++) {
3102 		axes[i] = inw(TRID_REG(chip, GAMEPORT_AXES + i * 2));
3103 		if (axes[i] == 0xffff) axes[i] = -1;
3104 	}
3105 
3106         return 0;
3107 }
3108 
3109 static int snd_trident_gameport_open(struct gameport *gameport, int mode)
3110 {
3111 	struct snd_trident *chip = gameport_get_port_data(gameport);
3112 
3113 	if (snd_BUG_ON(!chip))
3114 		return 0;
3115 
3116 	switch (mode) {
3117 		case GAMEPORT_MODE_COOKED:
3118 			outb(GAMEPORT_MODE_ADC, TRID_REG(chip, GAMEPORT_GCR));
3119 			msleep(20);
3120 			return 0;
3121 		case GAMEPORT_MODE_RAW:
3122 			outb(0, TRID_REG(chip, GAMEPORT_GCR));
3123 			return 0;
3124 		default:
3125 			return -1;
3126 	}
3127 }
3128 
3129 int snd_trident_create_gameport(struct snd_trident *chip)
3130 {
3131 	struct gameport *gp;
3132 
3133 	chip->gameport = gp = gameport_allocate_port();
3134 	if (!gp) {
3135 		dev_err(chip->card->dev,
3136 			"cannot allocate memory for gameport\n");
3137 		return -ENOMEM;
3138 	}
3139 
3140 	gameport_set_name(gp, "Trident 4DWave");
3141 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
3142 	gameport_set_dev_parent(gp, &chip->pci->dev);
3143 
3144 	gameport_set_port_data(gp, chip);
3145 	gp->fuzz = 64;
3146 	gp->read = snd_trident_gameport_read;
3147 	gp->trigger = snd_trident_gameport_trigger;
3148 	gp->cooked_read = snd_trident_gameport_cooked_read;
3149 	gp->open = snd_trident_gameport_open;
3150 
3151 	gameport_register_port(gp);
3152 
3153 	return 0;
3154 }
3155 
3156 static inline void snd_trident_free_gameport(struct snd_trident *chip)
3157 {
3158 	if (chip->gameport) {
3159 		gameport_unregister_port(chip->gameport);
3160 		chip->gameport = NULL;
3161 	}
3162 }
3163 #else
3164 int snd_trident_create_gameport(struct snd_trident *chip) { return -ENOSYS; }
3165 static inline void snd_trident_free_gameport(struct snd_trident *chip) { }
3166 #endif /* CONFIG_GAMEPORT */
3167 
3168 /*
3169  * delay for 1 tick
3170  */
3171 static inline void do_delay(struct snd_trident *chip)
3172 {
3173 	schedule_timeout_uninterruptible(1);
3174 }
3175 
3176 /*
3177  *  SiS reset routine
3178  */
3179 
3180 static int snd_trident_sis_reset(struct snd_trident *trident)
3181 {
3182 	unsigned long end_time;
3183 	unsigned int i;
3184 	int r;
3185 
3186 	r = trident->in_suspend ? 0 : 2;	/* count of retries */
3187       __si7018_retry:
3188 	pci_write_config_byte(trident->pci, 0x46, 0x04);	/* SOFTWARE RESET */
3189 	udelay(100);
3190 	pci_write_config_byte(trident->pci, 0x46, 0x00);
3191 	udelay(100);
3192 	/* disable AC97 GPIO interrupt */
3193 	outb(0x00, TRID_REG(trident, SI_AC97_GPIO));
3194 	/* initialize serial interface, force cold reset */
3195 	i = PCMOUT|SURROUT|CENTEROUT|LFEOUT|SECONDARY_ID|COLD_RESET;
3196 	outl(i, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3197 	udelay(1000);
3198 	/* remove cold reset */
3199 	i &= ~COLD_RESET;
3200 	outl(i, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3201 	udelay(2000);
3202 	/* wait, until the codec is ready */
3203 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3204 	do {
3205 		if ((inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_PRIMARY_READY) != 0)
3206 			goto __si7018_ok;
3207 		do_delay(trident);
3208 	} while (time_after_eq(end_time, jiffies));
3209 	dev_err(trident->card->dev, "AC'97 codec ready error [0x%x]\n",
3210 		inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)));
3211 	if (r-- > 0) {
3212 		end_time = jiffies + HZ;
3213 		do {
3214 			do_delay(trident);
3215 		} while (time_after_eq(end_time, jiffies));
3216 		goto __si7018_retry;
3217 	}
3218       __si7018_ok:
3219 	/* wait for the second codec */
3220 	do {
3221 		if ((inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_SECONDARY_READY) != 0)
3222 			break;
3223 		do_delay(trident);
3224 	} while (time_after_eq(end_time, jiffies));
3225 	/* enable 64 channel mode */
3226 	outl(BANK_B_EN, TRID_REG(trident, T4D_LFO_GC_CIR));
3227 	return 0;
3228 }
3229 
3230 /*
3231  *  /proc interface
3232  */
3233 
3234 static void snd_trident_proc_read(struct snd_info_entry *entry,
3235 				  struct snd_info_buffer *buffer)
3236 {
3237 	struct snd_trident *trident = entry->private_data;
3238 	char *s;
3239 
3240 	switch (trident->device) {
3241 	case TRIDENT_DEVICE_ID_SI7018:
3242 		s = "SiS 7018 Audio";
3243 		break;
3244 	case TRIDENT_DEVICE_ID_DX:
3245 		s = "Trident 4DWave PCI DX";
3246 		break;
3247 	case TRIDENT_DEVICE_ID_NX:
3248 		s = "Trident 4DWave PCI NX";
3249 		break;
3250 	default:
3251 		s = "???";
3252 	}
3253 	snd_iprintf(buffer, "%s\n\n", s);
3254 	snd_iprintf(buffer, "Spurious IRQs    : %d\n", trident->spurious_irq_count);
3255 	snd_iprintf(buffer, "Spurious IRQ dlta: %d\n", trident->spurious_irq_max_delta);
3256 	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018)
3257 		snd_iprintf(buffer, "IEC958 Mixer Out : %s\n", trident->spdif_ctrl == 0x28 ? "on" : "off");
3258 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3259 		snd_iprintf(buffer, "Rear Speakers    : %s\n", trident->ac97_ctrl & 0x00000010 ? "on" : "off");
3260 		if (trident->tlb.entries) {
3261 			snd_iprintf(buffer,"\nVirtual Memory\n");
3262 			snd_iprintf(buffer, "Memory Maximum : %d\n", trident->tlb.memhdr->size);
3263 			snd_iprintf(buffer, "Memory Used    : %d\n", trident->tlb.memhdr->used);
3264 			snd_iprintf(buffer, "Memory Free    : %d\n", snd_util_mem_avail(trident->tlb.memhdr));
3265 		}
3266 	}
3267 }
3268 
3269 static void snd_trident_proc_init(struct snd_trident *trident)
3270 {
3271 	const char *s = "trident";
3272 
3273 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
3274 		s = "sis7018";
3275 	snd_card_ro_proc_new(trident->card, s, trident, snd_trident_proc_read);
3276 }
3277 
3278 static int snd_trident_dev_free(struct snd_device *device)
3279 {
3280 	struct snd_trident *trident = device->device_data;
3281 	return snd_trident_free(trident);
3282 }
3283 
3284 /*---------------------------------------------------------------------------
3285    snd_trident_tlb_alloc
3286 
3287    Description: Allocate and set up the TLB page table on 4D NX.
3288 		Each entry has 4 bytes (physical PCI address).
3289 
3290    Parameters:  trident - pointer to target device class for 4DWave.
3291 
3292    Returns:     0 or negative error code
3293 
3294   ---------------------------------------------------------------------------*/
3295 
3296 static int snd_trident_tlb_alloc(struct snd_trident *trident)
3297 {
3298 	int i;
3299 
3300 	/* TLB array must be aligned to 16kB !!! so we allocate
3301 	   32kB region and correct offset when necessary */
3302 
3303 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &trident->pci->dev,
3304 				2 * SNDRV_TRIDENT_MAX_PAGES * 4, &trident->tlb.buffer) < 0) {
3305 		dev_err(trident->card->dev, "unable to allocate TLB buffer\n");
3306 		return -ENOMEM;
3307 	}
3308 	trident->tlb.entries = (__le32 *)ALIGN((unsigned long)trident->tlb.buffer.area, SNDRV_TRIDENT_MAX_PAGES * 4);
3309 	trident->tlb.entries_dmaaddr = ALIGN(trident->tlb.buffer.addr, SNDRV_TRIDENT_MAX_PAGES * 4);
3310 	/* allocate shadow TLB page table (virtual addresses) */
3311 	trident->tlb.shadow_entries =
3312 		vmalloc(array_size(SNDRV_TRIDENT_MAX_PAGES,
3313 				   sizeof(unsigned long)));
3314 	if (!trident->tlb.shadow_entries)
3315 		return -ENOMEM;
3316 
3317 	/* allocate and setup silent page and initialise TLB entries */
3318 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &trident->pci->dev,
3319 				SNDRV_TRIDENT_PAGE_SIZE, &trident->tlb.silent_page) < 0) {
3320 		dev_err(trident->card->dev, "unable to allocate silent page\n");
3321 		return -ENOMEM;
3322 	}
3323 	memset(trident->tlb.silent_page.area, 0, SNDRV_TRIDENT_PAGE_SIZE);
3324 	for (i = 0; i < SNDRV_TRIDENT_MAX_PAGES; i++) {
3325 		trident->tlb.entries[i] = cpu_to_le32(trident->tlb.silent_page.addr & ~(SNDRV_TRIDENT_PAGE_SIZE-1));
3326 		trident->tlb.shadow_entries[i] = (unsigned long)trident->tlb.silent_page.area;
3327 	}
3328 
3329 	/* use emu memory block manager code to manage tlb page allocation */
3330 	trident->tlb.memhdr = snd_util_memhdr_new(SNDRV_TRIDENT_PAGE_SIZE * SNDRV_TRIDENT_MAX_PAGES);
3331 	if (trident->tlb.memhdr == NULL)
3332 		return -ENOMEM;
3333 
3334 	trident->tlb.memhdr->block_extra_size = sizeof(struct snd_trident_memblk_arg);
3335 	return 0;
3336 }
3337 
3338 /*
3339  * initialize 4D DX chip
3340  */
3341 
3342 static void snd_trident_stop_all_voices(struct snd_trident *trident)
3343 {
3344 	outl(0xffffffff, TRID_REG(trident, T4D_STOP_A));
3345 	outl(0xffffffff, TRID_REG(trident, T4D_STOP_B));
3346 	outl(0, TRID_REG(trident, T4D_AINTEN_A));
3347 	outl(0, TRID_REG(trident, T4D_AINTEN_B));
3348 }
3349 
3350 static int snd_trident_4d_dx_init(struct snd_trident *trident)
3351 {
3352 	struct pci_dev *pci = trident->pci;
3353 	unsigned long end_time;
3354 
3355 	/* reset the legacy configuration and whole audio/wavetable block */
3356 	pci_write_config_dword(pci, 0x40, 0);	/* DDMA */
3357 	pci_write_config_byte(pci, 0x44, 0);	/* ports */
3358 	pci_write_config_byte(pci, 0x45, 0);	/* Legacy DMA */
3359 	pci_write_config_byte(pci, 0x46, 4); /* reset */
3360 	udelay(100);
3361 	pci_write_config_byte(pci, 0x46, 0); /* release reset */
3362 	udelay(100);
3363 
3364 	/* warm reset of the AC'97 codec */
3365 	outl(0x00000001, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3366 	udelay(100);
3367 	outl(0x00000000, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3368 	/* DAC on, disable SB IRQ and try to force ADC valid signal */
3369 	trident->ac97_ctrl = 0x0000004a;
3370 	outl(trident->ac97_ctrl, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3371 	/* wait, until the codec is ready */
3372 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3373 	do {
3374 		if ((inl(TRID_REG(trident, DX_ACR2_AC97_COM_STAT)) & 0x0010) != 0)
3375 			goto __dx_ok;
3376 		do_delay(trident);
3377 	} while (time_after_eq(end_time, jiffies));
3378 	dev_err(trident->card->dev, "AC'97 codec ready error\n");
3379 	return -EIO;
3380 
3381  __dx_ok:
3382 	snd_trident_stop_all_voices(trident);
3383 
3384 	return 0;
3385 }
3386 
3387 /*
3388  * initialize 4D NX chip
3389  */
3390 static int snd_trident_4d_nx_init(struct snd_trident *trident)
3391 {
3392 	struct pci_dev *pci = trident->pci;
3393 	unsigned long end_time;
3394 
3395 	/* reset the legacy configuration and whole audio/wavetable block */
3396 	pci_write_config_dword(pci, 0x40, 0);	/* DDMA */
3397 	pci_write_config_byte(pci, 0x44, 0);	/* ports */
3398 	pci_write_config_byte(pci, 0x45, 0);	/* Legacy DMA */
3399 
3400 	pci_write_config_byte(pci, 0x46, 1); /* reset */
3401 	udelay(100);
3402 	pci_write_config_byte(pci, 0x46, 0); /* release reset */
3403 	udelay(100);
3404 
3405 	/* warm reset of the AC'97 codec */
3406 	outl(0x00000001, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3407 	udelay(100);
3408 	outl(0x00000000, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3409 	/* wait, until the codec is ready */
3410 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3411 	do {
3412 		if ((inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT)) & 0x0008) != 0)
3413 			goto __nx_ok;
3414 		do_delay(trident);
3415 	} while (time_after_eq(end_time, jiffies));
3416 	dev_err(trident->card->dev, "AC'97 codec ready error [0x%x]\n",
3417 		inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT)));
3418 	return -EIO;
3419 
3420  __nx_ok:
3421 	/* DAC on */
3422 	trident->ac97_ctrl = 0x00000002;
3423 	outl(trident->ac97_ctrl, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3424 	/* disable SB IRQ */
3425 	outl(NX_SB_IRQ_DISABLE, TRID_REG(trident, T4D_MISCINT));
3426 
3427 	snd_trident_stop_all_voices(trident);
3428 
3429 	if (trident->tlb.entries != NULL) {
3430 		unsigned int i;
3431 		/* enable virtual addressing via TLB */
3432 		i = trident->tlb.entries_dmaaddr;
3433 		i |= 0x00000001;
3434 		outl(i, TRID_REG(trident, NX_TLBC));
3435 	} else {
3436 		outl(0, TRID_REG(trident, NX_TLBC));
3437 	}
3438 	/* initialize S/PDIF */
3439 	outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
3440 	outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
3441 
3442 	return 0;
3443 }
3444 
3445 /*
3446  * initialize sis7018 chip
3447  */
3448 static int snd_trident_sis_init(struct snd_trident *trident)
3449 {
3450 	int err;
3451 
3452 	if ((err = snd_trident_sis_reset(trident)) < 0)
3453 		return err;
3454 
3455 	snd_trident_stop_all_voices(trident);
3456 
3457 	/* initialize S/PDIF */
3458 	outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
3459 
3460 	return 0;
3461 }
3462 
3463 /*---------------------------------------------------------------------------
3464    snd_trident_create
3465 
3466    Description: This routine will create the device specific class for
3467                 the 4DWave card. It will also perform basic initialization.
3468 
3469    Parameters:  card  - which card to create
3470                 pci   - interface to PCI bus resource info
3471                 dma1ptr - playback dma buffer
3472                 dma2ptr - capture dma buffer
3473                 irqptr  -  interrupt resource info
3474 
3475    Returns:     4DWave device class private data
3476 
3477   ---------------------------------------------------------------------------*/
3478 
3479 int snd_trident_create(struct snd_card *card,
3480 		       struct pci_dev *pci,
3481 		       int pcm_streams,
3482 		       int pcm_spdif_device,
3483 		       int max_wavetable_size,
3484 		       struct snd_trident ** rtrident)
3485 {
3486 	struct snd_trident *trident;
3487 	int i, err;
3488 	struct snd_trident_voice *voice;
3489 	struct snd_trident_pcm_mixer *tmix;
3490 	static const struct snd_device_ops ops = {
3491 		.dev_free =	snd_trident_dev_free,
3492 	};
3493 
3494 	*rtrident = NULL;
3495 
3496 	/* enable PCI device */
3497 	if ((err = pci_enable_device(pci)) < 0)
3498 		return err;
3499 	/* check, if we can restrict PCI DMA transfers to 30 bits */
3500 	if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(30))) {
3501 		dev_err(card->dev,
3502 			"architecture does not support 30bit PCI busmaster DMA\n");
3503 		pci_disable_device(pci);
3504 		return -ENXIO;
3505 	}
3506 
3507 	trident = kzalloc(sizeof(*trident), GFP_KERNEL);
3508 	if (trident == NULL) {
3509 		pci_disable_device(pci);
3510 		return -ENOMEM;
3511 	}
3512 	trident->device = (pci->vendor << 16) | pci->device;
3513 	trident->card = card;
3514 	trident->pci = pci;
3515 	spin_lock_init(&trident->reg_lock);
3516 	spin_lock_init(&trident->event_lock);
3517 	spin_lock_init(&trident->voice_alloc);
3518 	if (pcm_streams < 1)
3519 		pcm_streams = 1;
3520 	if (pcm_streams > 32)
3521 		pcm_streams = 32;
3522 	trident->ChanPCM = pcm_streams;
3523 	if (max_wavetable_size < 0 )
3524 		max_wavetable_size = 0;
3525 	trident->synth.max_size = max_wavetable_size * 1024;
3526 	trident->irq = -1;
3527 
3528 	trident->midi_port = TRID_REG(trident, T4D_MPU401_BASE);
3529 	pci_set_master(pci);
3530 
3531 	if ((err = pci_request_regions(pci, "Trident Audio")) < 0) {
3532 		kfree(trident);
3533 		pci_disable_device(pci);
3534 		return err;
3535 	}
3536 	trident->port = pci_resource_start(pci, 0);
3537 
3538 	if (request_irq(pci->irq, snd_trident_interrupt, IRQF_SHARED,
3539 			KBUILD_MODNAME, trident)) {
3540 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
3541 		snd_trident_free(trident);
3542 		return -EBUSY;
3543 	}
3544 	trident->irq = pci->irq;
3545 	card->sync_irq = trident->irq;
3546 
3547 	/* allocate 16k-aligned TLB for NX cards */
3548 	trident->tlb.entries = NULL;
3549 	trident->tlb.buffer.area = NULL;
3550 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3551 		if ((err = snd_trident_tlb_alloc(trident)) < 0) {
3552 			snd_trident_free(trident);
3553 			return err;
3554 		}
3555 	}
3556 
3557 	trident->spdif_bits = trident->spdif_pcm_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
3558 
3559 	/* initialize chip */
3560 	switch (trident->device) {
3561 	case TRIDENT_DEVICE_ID_DX:
3562 		err = snd_trident_4d_dx_init(trident);
3563 		break;
3564 	case TRIDENT_DEVICE_ID_NX:
3565 		err = snd_trident_4d_nx_init(trident);
3566 		break;
3567 	case TRIDENT_DEVICE_ID_SI7018:
3568 		err = snd_trident_sis_init(trident);
3569 		break;
3570 	default:
3571 		snd_BUG();
3572 		break;
3573 	}
3574 	if (err < 0) {
3575 		snd_trident_free(trident);
3576 		return err;
3577 	}
3578 
3579 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, trident, &ops)) < 0) {
3580 		snd_trident_free(trident);
3581 		return err;
3582 	}
3583 
3584 	if ((err = snd_trident_mixer(trident, pcm_spdif_device)) < 0)
3585 		return err;
3586 
3587 	/* initialise synth voices */
3588 	for (i = 0; i < 64; i++) {
3589 		voice = &trident->synth.voices[i];
3590 		voice->number = i;
3591 		voice->trident = trident;
3592 	}
3593 	/* initialize pcm mixer entries */
3594 	for (i = 0; i < 32; i++) {
3595 		tmix = &trident->pcm_mixer[i];
3596 		tmix->vol = T4D_DEFAULT_PCM_VOL;
3597 		tmix->pan = T4D_DEFAULT_PCM_PAN;
3598 		tmix->rvol = T4D_DEFAULT_PCM_RVOL;
3599 		tmix->cvol = T4D_DEFAULT_PCM_CVOL;
3600 	}
3601 
3602 	snd_trident_enable_eso(trident);
3603 
3604 	snd_trident_proc_init(trident);
3605 	*rtrident = trident;
3606 	return 0;
3607 }
3608 
3609 /*---------------------------------------------------------------------------
3610    snd_trident_free
3611 
3612    Description: This routine will free the device specific class for
3613                 the 4DWave card.
3614 
3615    Parameters:  trident  - device specific private data for 4DWave card
3616 
3617    Returns:     None.
3618 
3619   ---------------------------------------------------------------------------*/
3620 
3621 static int snd_trident_free(struct snd_trident *trident)
3622 {
3623 	snd_trident_free_gameport(trident);
3624 	snd_trident_disable_eso(trident);
3625 	// Disable S/PDIF out
3626 	if (trident->device == TRIDENT_DEVICE_ID_NX)
3627 		outb(0x00, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
3628 	else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
3629 		outl(0, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3630 	}
3631 	if (trident->irq >= 0)
3632 		free_irq(trident->irq, trident);
3633 	if (trident->tlb.buffer.area) {
3634 		outl(0, TRID_REG(trident, NX_TLBC));
3635 		snd_util_memhdr_free(trident->tlb.memhdr);
3636 		if (trident->tlb.silent_page.area)
3637 			snd_dma_free_pages(&trident->tlb.silent_page);
3638 		vfree(trident->tlb.shadow_entries);
3639 		snd_dma_free_pages(&trident->tlb.buffer);
3640 	}
3641 	pci_release_regions(trident->pci);
3642 	pci_disable_device(trident->pci);
3643 	kfree(trident);
3644 	return 0;
3645 }
3646 
3647 /*---------------------------------------------------------------------------
3648    snd_trident_interrupt
3649 
3650    Description: ISR for Trident 4DWave device
3651 
3652    Parameters:  trident  - device specific private data for 4DWave card
3653 
3654    Problems:    It seems that Trident chips generates interrupts more than
3655                 one time in special cases. The spurious interrupts are
3656                 detected via sample timer (T4D_STIMER) and computing
3657                 corresponding delta value. The limits are detected with
3658                 the method try & fail so it is possible that it won't
3659                 work on all computers. [jaroslav]
3660 
3661    Returns:     None.
3662 
3663   ---------------------------------------------------------------------------*/
3664 
3665 static irqreturn_t snd_trident_interrupt(int irq, void *dev_id)
3666 {
3667 	struct snd_trident *trident = dev_id;
3668 	unsigned int audio_int, chn_int, stimer, channel, mask, tmp;
3669 	int delta;
3670 	struct snd_trident_voice *voice;
3671 
3672 	audio_int = inl(TRID_REG(trident, T4D_MISCINT));
3673 	if ((audio_int & (ADDRESS_IRQ|MPU401_IRQ)) == 0)
3674 		return IRQ_NONE;
3675 	if (audio_int & ADDRESS_IRQ) {
3676 		// get interrupt status for all channels
3677 		spin_lock(&trident->reg_lock);
3678 		stimer = inl(TRID_REG(trident, T4D_STIMER)) & 0x00ffffff;
3679 		chn_int = inl(TRID_REG(trident, T4D_AINT_A));
3680 		if (chn_int == 0)
3681 			goto __skip1;
3682 		outl(chn_int, TRID_REG(trident, T4D_AINT_A));	/* ack */
3683 	      __skip1:
3684 		chn_int = inl(TRID_REG(trident, T4D_AINT_B));
3685 		if (chn_int == 0)
3686 			goto __skip2;
3687 		for (channel = 63; channel >= 32; channel--) {
3688 			mask = 1 << (channel&0x1f);
3689 			if ((chn_int & mask) == 0)
3690 				continue;
3691 			voice = &trident->synth.voices[channel];
3692 			if (!voice->pcm || voice->substream == NULL) {
3693 				outl(mask, TRID_REG(trident, T4D_STOP_B));
3694 				continue;
3695 			}
3696 			delta = (int)stimer - (int)voice->stimer;
3697 			if (delta < 0)
3698 				delta = -delta;
3699 			if ((unsigned int)delta < voice->spurious_threshold) {
3700 				/* do some statistics here */
3701 				trident->spurious_irq_count++;
3702 				if (trident->spurious_irq_max_delta < (unsigned int)delta)
3703 					trident->spurious_irq_max_delta = delta;
3704 				continue;
3705 			}
3706 			voice->stimer = stimer;
3707 			if (voice->isync) {
3708 				if (!voice->isync3) {
3709 					tmp = inw(TRID_REG(trident, T4D_SBBL_SBCL));
3710 					if (trident->bDMAStart & 0x40)
3711 						tmp >>= 1;
3712 					if (tmp > 0)
3713 						tmp = voice->isync_max - tmp;
3714 				} else {
3715 					tmp = inl(TRID_REG(trident, NX_SPCTRL_SPCSO)) & 0x00ffffff;
3716 				}
3717 				if (tmp < voice->isync_mark) {
3718 					if (tmp > 0x10)
3719 						tmp = voice->isync_ESO - 7;
3720 					else
3721 						tmp = voice->isync_ESO + 2;
3722 					/* update ESO for IRQ voice to preserve sync */
3723 					snd_trident_stop_voice(trident, voice->number);
3724 					snd_trident_write_eso_reg(trident, voice, tmp);
3725 					snd_trident_start_voice(trident, voice->number);
3726 				}
3727 			} else if (voice->isync2) {
3728 				voice->isync2 = 0;
3729 				/* write original ESO and update CSO for IRQ voice to preserve sync */
3730 				snd_trident_stop_voice(trident, voice->number);
3731 				snd_trident_write_cso_reg(trident, voice, voice->isync_mark);
3732 				snd_trident_write_eso_reg(trident, voice, voice->ESO);
3733 				snd_trident_start_voice(trident, voice->number);
3734 			}
3735 #if 0
3736 			if (voice->extra) {
3737 				/* update CSO for extra voice to preserve sync */
3738 				snd_trident_stop_voice(trident, voice->extra->number);
3739 				snd_trident_write_cso_reg(trident, voice->extra, 0);
3740 				snd_trident_start_voice(trident, voice->extra->number);
3741 			}
3742 #endif
3743 			spin_unlock(&trident->reg_lock);
3744 			snd_pcm_period_elapsed(voice->substream);
3745 			spin_lock(&trident->reg_lock);
3746 		}
3747 		outl(chn_int, TRID_REG(trident, T4D_AINT_B));	/* ack */
3748 	      __skip2:
3749 		spin_unlock(&trident->reg_lock);
3750 	}
3751 	if (audio_int & MPU401_IRQ) {
3752 		if (trident->rmidi) {
3753 			snd_mpu401_uart_interrupt(irq, trident->rmidi->private_data);
3754 		} else {
3755 			inb(TRID_REG(trident, T4D_MPUR0));
3756 		}
3757 	}
3758 	// outl((ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW), TRID_REG(trident, T4D_MISCINT));
3759 	return IRQ_HANDLED;
3760 }
3761 
3762 struct snd_trident_voice *snd_trident_alloc_voice(struct snd_trident * trident, int type, int client, int port)
3763 {
3764 	struct snd_trident_voice *pvoice;
3765 	unsigned long flags;
3766 	int idx;
3767 
3768 	spin_lock_irqsave(&trident->voice_alloc, flags);
3769 	if (type == SNDRV_TRIDENT_VOICE_TYPE_PCM) {
3770 		idx = snd_trident_allocate_pcm_channel(trident);
3771 		if(idx < 0) {
3772 			spin_unlock_irqrestore(&trident->voice_alloc, flags);
3773 			return NULL;
3774 		}
3775 		pvoice = &trident->synth.voices[idx];
3776 		pvoice->use = 1;
3777 		pvoice->pcm = 1;
3778 		pvoice->capture = 0;
3779 		pvoice->spdif = 0;
3780 		pvoice->memblk = NULL;
3781 		pvoice->substream = NULL;
3782 		spin_unlock_irqrestore(&trident->voice_alloc, flags);
3783 		return pvoice;
3784 	}
3785 	if (type == SNDRV_TRIDENT_VOICE_TYPE_SYNTH) {
3786 		idx = snd_trident_allocate_synth_channel(trident);
3787 		if(idx < 0) {
3788 			spin_unlock_irqrestore(&trident->voice_alloc, flags);
3789 			return NULL;
3790 		}
3791 		pvoice = &trident->synth.voices[idx];
3792 		pvoice->use = 1;
3793 		pvoice->synth = 1;
3794 		pvoice->client = client;
3795 		pvoice->port = port;
3796 		pvoice->memblk = NULL;
3797 		spin_unlock_irqrestore(&trident->voice_alloc, flags);
3798 		return pvoice;
3799 	}
3800 	if (type == SNDRV_TRIDENT_VOICE_TYPE_MIDI) {
3801 	}
3802 	spin_unlock_irqrestore(&trident->voice_alloc, flags);
3803 	return NULL;
3804 }
3805 
3806 EXPORT_SYMBOL(snd_trident_alloc_voice);
3807 
3808 void snd_trident_free_voice(struct snd_trident * trident, struct snd_trident_voice *voice)
3809 {
3810 	unsigned long flags;
3811 	void (*private_free)(struct snd_trident_voice *);
3812 
3813 	if (voice == NULL || !voice->use)
3814 		return;
3815 	snd_trident_clear_voices(trident, voice->number, voice->number);
3816 	spin_lock_irqsave(&trident->voice_alloc, flags);
3817 	private_free = voice->private_free;
3818 	voice->private_free = NULL;
3819 	voice->private_data = NULL;
3820 	if (voice->pcm)
3821 		snd_trident_free_pcm_channel(trident, voice->number);
3822 	if (voice->synth)
3823 		snd_trident_free_synth_channel(trident, voice->number);
3824 	voice->use = voice->pcm = voice->synth = voice->midi = 0;
3825 	voice->capture = voice->spdif = 0;
3826 	voice->sample_ops = NULL;
3827 	voice->substream = NULL;
3828 	voice->extra = NULL;
3829 	spin_unlock_irqrestore(&trident->voice_alloc, flags);
3830 	if (private_free)
3831 		private_free(voice);
3832 }
3833 
3834 EXPORT_SYMBOL(snd_trident_free_voice);
3835 
3836 static void snd_trident_clear_voices(struct snd_trident * trident, unsigned short v_min, unsigned short v_max)
3837 {
3838 	unsigned int i, val, mask[2] = { 0, 0 };
3839 
3840 	if (snd_BUG_ON(v_min > 63 || v_max > 63))
3841 		return;
3842 	for (i = v_min; i <= v_max; i++)
3843 		mask[i >> 5] |= 1 << (i & 0x1f);
3844 	if (mask[0]) {
3845 		outl(mask[0], TRID_REG(trident, T4D_STOP_A));
3846 		val = inl(TRID_REG(trident, T4D_AINTEN_A));
3847 		outl(val & ~mask[0], TRID_REG(trident, T4D_AINTEN_A));
3848 	}
3849 	if (mask[1]) {
3850 		outl(mask[1], TRID_REG(trident, T4D_STOP_B));
3851 		val = inl(TRID_REG(trident, T4D_AINTEN_B));
3852 		outl(val & ~mask[1], TRID_REG(trident, T4D_AINTEN_B));
3853 	}
3854 }
3855 
3856 #ifdef CONFIG_PM_SLEEP
3857 static int snd_trident_suspend(struct device *dev)
3858 {
3859 	struct snd_card *card = dev_get_drvdata(dev);
3860 	struct snd_trident *trident = card->private_data;
3861 
3862 	trident->in_suspend = 1;
3863 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
3864 	snd_ac97_suspend(trident->ac97);
3865 	snd_ac97_suspend(trident->ac97_sec);
3866 	return 0;
3867 }
3868 
3869 static int snd_trident_resume(struct device *dev)
3870 {
3871 	struct snd_card *card = dev_get_drvdata(dev);
3872 	struct snd_trident *trident = card->private_data;
3873 
3874 	switch (trident->device) {
3875 	case TRIDENT_DEVICE_ID_DX:
3876 		snd_trident_4d_dx_init(trident);
3877 		break;
3878 	case TRIDENT_DEVICE_ID_NX:
3879 		snd_trident_4d_nx_init(trident);
3880 		break;
3881 	case TRIDENT_DEVICE_ID_SI7018:
3882 		snd_trident_sis_init(trident);
3883 		break;
3884 	}
3885 
3886 	snd_ac97_resume(trident->ac97);
3887 	snd_ac97_resume(trident->ac97_sec);
3888 
3889 	/* restore some registers */
3890 	outl(trident->musicvol_wavevol, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3891 
3892 	snd_trident_enable_eso(trident);
3893 
3894 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
3895 	trident->in_suspend = 0;
3896 	return 0;
3897 }
3898 
3899 SIMPLE_DEV_PM_OPS(snd_trident_pm, snd_trident_suspend, snd_trident_resume);
3900 #endif /* CONFIG_PM_SLEEP */
3901