xref: /openbmc/linux/sound/isa/es18xx.c (revision 1da177e4)
1 /*
2  *  Driver for generic ESS AudioDrive ES18xx soundcards
3  *  Copyright (c) by Christian Fischbach <fishbach@pool.informatik.rwth-aachen.de>
4  *  Copyright (c) by Abramo Bagnara <abramo@alsa-project.org>
5  *
6  *
7  *   This program is free software; you can redistribute it and/or modify
8  *   it under the terms of the GNU General Public License as published by
9  *   the Free Software Foundation; either version 2 of the License, or
10  *   (at your option) any later version.
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  *
21  */
22 /* GENERAL NOTES:
23  *
24  * BUGS:
25  * - There are pops (we can't delay in trigger function, cause midlevel
26  *   often need to trigger down and then up very quickly).
27  *   Any ideas?
28  * - Support for 16 bit DMA seems to be broken. I've no hardware to tune it.
29  */
30 
31 /*
32  * ES1868  NOTES:
33  * - The chip has one half duplex pcm (with very limited full duplex support).
34  *
35  * - Duplex stereophonic sound is impossible.
36  * - Record and playback must share the same frequency rate.
37  *
38  * - The driver use dma2 for playback and dma1 for capture.
39  */
40 
41 /*
42  * ES1869 NOTES:
43  *
44  * - there are a first full duplex pcm and a second playback only pcm
45  *   (incompatible with first pcm capture)
46  *
47  * - there is support for the capture volume and ESS Spatializer 3D effect.
48  *
49  * - contrarily to some pages in DS_1869.PDF the rates can be set
50  *   independently.
51  *
52  * BUGS:
53  *
54  * - There is a major trouble I noted:
55  *
56  *   using both channel for playback stereo 16 bit samples at 44100 Hz
57  *   the second pcm (Audio1) DMA slows down irregularly and sound is garbled.
58  *
59  *   The same happens using Audio1 for captureing.
60  *
61  *   The Windows driver does not suffer of this (although it use Audio1
62  *   only for captureing). I'm unable to discover why.
63  *
64  */
65 
66 
67 #include <sound/driver.h>
68 #include <asm/io.h>
69 #include <asm/dma.h>
70 #include <linux/init.h>
71 #include <linux/pm.h>
72 #include <linux/slab.h>
73 #include <linux/pnp.h>
74 #include <linux/isapnp.h>
75 #include <linux/moduleparam.h>
76 #include <sound/core.h>
77 #include <sound/control.h>
78 #include <sound/pcm.h>
79 #include <sound/pcm_params.h>
80 #include <sound/mpu401.h>
81 #include <sound/opl3.h>
82 #define SNDRV_LEGACY_AUTO_PROBE
83 #define SNDRV_LEGACY_FIND_FREE_IRQ
84 #define SNDRV_LEGACY_FIND_FREE_DMA
85 #include <sound/initval.h>
86 
87 #define PFX "es18xx: "
88 
89 struct _snd_es18xx {
90 	unsigned long port;		/* port of ESS chip */
91 	unsigned long mpu_port;		/* MPU-401 port of ESS chip */
92 	unsigned long fm_port;		/* FM port */
93 	unsigned long ctrl_port;	/* Control port of ESS chip */
94 	struct resource *res_port;
95 	struct resource *res_mpu_port;
96 	struct resource *res_ctrl_port;
97 	int irq;			/* IRQ number of ESS chip */
98 	int dma1;			/* DMA1 */
99 	int dma2;			/* DMA2 */
100 	unsigned short version;		/* version of ESS chip */
101 	int caps;			/* Chip capabilities */
102 	unsigned short audio2_vol;	/* volume level of audio2 */
103 
104 	unsigned short active;		/* active channel mask */
105 	unsigned int dma1_size;
106 	unsigned int dma2_size;
107 	unsigned int dma1_shift;
108 	unsigned int dma2_shift;
109 
110 	snd_card_t *card;
111 	snd_pcm_t *pcm;
112 	snd_pcm_substream_t *playback_a_substream;
113 	snd_pcm_substream_t *capture_a_substream;
114 	snd_pcm_substream_t *playback_b_substream;
115 
116 	snd_rawmidi_t *rmidi;
117 
118 	snd_kcontrol_t *hw_volume;
119 	snd_kcontrol_t *hw_switch;
120 	snd_kcontrol_t *master_volume;
121 	snd_kcontrol_t *master_switch;
122 
123 	spinlock_t reg_lock;
124 	spinlock_t mixer_lock;
125 	spinlock_t ctrl_lock;
126 #ifdef CONFIG_PM
127 	unsigned char pm_reg;
128 #endif
129 };
130 
131 #define AUDIO1_IRQ	0x01
132 #define AUDIO2_IRQ	0x02
133 #define HWV_IRQ		0x04
134 #define MPU_IRQ		0x08
135 
136 #define ES18XX_PCM2	0x0001	/* Has two useable PCM */
137 #define ES18XX_SPATIALIZER 0x0002	/* Has 3D Spatializer */
138 #define ES18XX_RECMIX	0x0004	/* Has record mixer */
139 #define ES18XX_DUPLEX_MONO 0x0008	/* Has mono duplex only */
140 #define ES18XX_DUPLEX_SAME 0x0010	/* Playback and record must share the same rate */
141 #define ES18XX_NEW_RATE	0x0020	/* More precise rate setting */
142 #define ES18XX_AUXB	0x0040	/* AuxB mixer control */
143 #define ES18XX_HWV	0x0080	/* Has hardware volume */
144 #define ES18XX_MONO	0x0100	/* Mono_in mixer control */
145 #define ES18XX_I2S	0x0200	/* I2S mixer control */
146 #define ES18XX_MUTEREC	0x0400	/* Record source can be muted */
147 #define ES18XX_CONTROL	0x0800	/* Has control ports */
148 
149 /* Power Management */
150 #define ES18XX_PM	0x07
151 #define ES18XX_PM_GPO0	0x01
152 #define ES18XX_PM_GPO1	0x02
153 #define ES18XX_PM_PDR	0x04
154 #define ES18XX_PM_ANA	0x08
155 #define ES18XX_PM_FM	0x020
156 #define ES18XX_PM_SUS	0x080
157 
158 typedef struct _snd_es18xx es18xx_t;
159 
160 /* Lowlevel */
161 
162 #define DAC1 0x01
163 #define ADC1 0x02
164 #define DAC2 0x04
165 #define MILLISECOND 10000
166 
167 static int snd_es18xx_dsp_command(es18xx_t *chip, unsigned char val)
168 {
169         int i;
170 
171         for(i = MILLISECOND; i; i--)
172                 if ((inb(chip->port + 0x0C) & 0x80) == 0) {
173                         outb(val, chip->port + 0x0C);
174                         return 0;
175                 }
176         snd_printk("dsp_command: timeout (0x%x)\n", val);
177         return -EINVAL;
178 }
179 
180 static int snd_es18xx_dsp_get_byte(es18xx_t *chip)
181 {
182         int i;
183 
184         for(i = MILLISECOND/10; i; i--)
185                 if (inb(chip->port + 0x0C) & 0x40)
186                         return inb(chip->port + 0x0A);
187         snd_printk("dsp_get_byte failed: 0x%lx = 0x%x!!!\n", chip->port + 0x0A, inb(chip->port + 0x0A));
188         return -ENODEV;
189 }
190 
191 #undef REG_DEBUG
192 
193 static int snd_es18xx_write(es18xx_t *chip,
194 			    unsigned char reg, unsigned char data)
195 {
196 	unsigned long flags;
197 	int ret;
198 
199         spin_lock_irqsave(&chip->reg_lock, flags);
200 	ret = snd_es18xx_dsp_command(chip, reg);
201 	if (ret < 0)
202 		goto end;
203         ret = snd_es18xx_dsp_command(chip, data);
204  end:
205         spin_unlock_irqrestore(&chip->reg_lock, flags);
206 #ifdef REG_DEBUG
207 	snd_printk("Reg %02x set to %02x\n", reg, data);
208 #endif
209 	return ret;
210 }
211 
212 static int snd_es18xx_read(es18xx_t *chip, unsigned char reg)
213 {
214 	unsigned long flags;
215 	int ret, data;
216         spin_lock_irqsave(&chip->reg_lock, flags);
217 	ret = snd_es18xx_dsp_command(chip, 0xC0);
218 	if (ret < 0)
219 		goto end;
220         ret = snd_es18xx_dsp_command(chip, reg);
221 	if (ret < 0)
222 		goto end;
223 	data = snd_es18xx_dsp_get_byte(chip);
224 	ret = data;
225 #ifdef REG_DEBUG
226 	snd_printk("Reg %02x now is %02x (%d)\n", reg, data, ret);
227 #endif
228  end:
229         spin_unlock_irqrestore(&chip->reg_lock, flags);
230 	return ret;
231 }
232 
233 /* Return old value */
234 static int snd_es18xx_bits(es18xx_t *chip, unsigned char reg,
235 			   unsigned char mask, unsigned char val)
236 {
237         int ret;
238 	unsigned char old, new, oval;
239 	unsigned long flags;
240         spin_lock_irqsave(&chip->reg_lock, flags);
241         ret = snd_es18xx_dsp_command(chip, 0xC0);
242 	if (ret < 0)
243 		goto end;
244         ret = snd_es18xx_dsp_command(chip, reg);
245 	if (ret < 0)
246 		goto end;
247 	ret = snd_es18xx_dsp_get_byte(chip);
248 	if (ret < 0) {
249 		goto end;
250 	}
251 	old = ret;
252 	oval = old & mask;
253 	if (val != oval) {
254 		ret = snd_es18xx_dsp_command(chip, reg);
255 		if (ret < 0)
256 			goto end;
257 		new = (old & ~mask) | (val & mask);
258 		ret = snd_es18xx_dsp_command(chip, new);
259 		if (ret < 0)
260 			goto end;
261 #ifdef REG_DEBUG
262 		snd_printk("Reg %02x was %02x, set to %02x (%d)\n", reg, old, new, ret);
263 #endif
264 	}
265 	ret = oval;
266  end:
267         spin_unlock_irqrestore(&chip->reg_lock, flags);
268 	return ret;
269 }
270 
271 static inline void snd_es18xx_mixer_write(es18xx_t *chip,
272 			    unsigned char reg, unsigned char data)
273 {
274 	unsigned long flags;
275         spin_lock_irqsave(&chip->mixer_lock, flags);
276         outb(reg, chip->port + 0x04);
277         outb(data, chip->port + 0x05);
278         spin_unlock_irqrestore(&chip->mixer_lock, flags);
279 #ifdef REG_DEBUG
280 	snd_printk("Mixer reg %02x set to %02x\n", reg, data);
281 #endif
282 }
283 
284 static inline int snd_es18xx_mixer_read(es18xx_t *chip, unsigned char reg)
285 {
286 	unsigned long flags;
287 	int data;
288         spin_lock_irqsave(&chip->mixer_lock, flags);
289         outb(reg, chip->port + 0x04);
290 	data = inb(chip->port + 0x05);
291         spin_unlock_irqrestore(&chip->mixer_lock, flags);
292 #ifdef REG_DEBUG
293 	snd_printk("Mixer reg %02x now is %02x\n", reg, data);
294 #endif
295         return data;
296 }
297 
298 /* Return old value */
299 static inline int snd_es18xx_mixer_bits(es18xx_t *chip, unsigned char reg,
300 					unsigned char mask, unsigned char val)
301 {
302 	unsigned char old, new, oval;
303 	unsigned long flags;
304         spin_lock_irqsave(&chip->mixer_lock, flags);
305         outb(reg, chip->port + 0x04);
306 	old = inb(chip->port + 0x05);
307 	oval = old & mask;
308 	if (val != oval) {
309 		new = (old & ~mask) | (val & mask);
310 		outb(new, chip->port + 0x05);
311 #ifdef REG_DEBUG
312 		snd_printk("Mixer reg %02x was %02x, set to %02x\n", reg, old, new);
313 #endif
314 	}
315         spin_unlock_irqrestore(&chip->mixer_lock, flags);
316 	return oval;
317 }
318 
319 static inline int snd_es18xx_mixer_writable(es18xx_t *chip, unsigned char reg,
320 					    unsigned char mask)
321 {
322 	int old, expected, new;
323 	unsigned long flags;
324         spin_lock_irqsave(&chip->mixer_lock, flags);
325         outb(reg, chip->port + 0x04);
326 	old = inb(chip->port + 0x05);
327 	expected = old ^ mask;
328 	outb(expected, chip->port + 0x05);
329 	new = inb(chip->port + 0x05);
330         spin_unlock_irqrestore(&chip->mixer_lock, flags);
331 #ifdef REG_DEBUG
332 	snd_printk("Mixer reg %02x was %02x, set to %02x, now is %02x\n", reg, old, expected, new);
333 #endif
334 	return expected == new;
335 }
336 
337 
338 static int snd_es18xx_reset(es18xx_t *chip)
339 {
340 	int i;
341         outb(0x03, chip->port + 0x06);
342         inb(chip->port + 0x06);
343         outb(0x00, chip->port + 0x06);
344         for(i = 0; i < MILLISECOND && !(inb(chip->port + 0x0E) & 0x80); i++);
345         if (inb(chip->port + 0x0A) != 0xAA)
346                 return -1;
347 	return 0;
348 }
349 
350 static int snd_es18xx_reset_fifo(es18xx_t *chip)
351 {
352         outb(0x02, chip->port + 0x06);
353         inb(chip->port + 0x06);
354         outb(0x00, chip->port + 0x06);
355 	return 0;
356 }
357 
358 static ratnum_t new_clocks[2] = {
359 	{
360 		.num = 793800,
361 		.den_min = 1,
362 		.den_max = 128,
363 		.den_step = 1,
364 	},
365 	{
366 		.num = 768000,
367 		.den_min = 1,
368 		.den_max = 128,
369 		.den_step = 1,
370 	}
371 };
372 
373 static snd_pcm_hw_constraint_ratnums_t new_hw_constraints_clocks = {
374 	.nrats = 2,
375 	.rats = new_clocks,
376 };
377 
378 static ratnum_t old_clocks[2] = {
379 	{
380 		.num = 795444,
381 		.den_min = 1,
382 		.den_max = 128,
383 		.den_step = 1,
384 	},
385 	{
386 		.num = 397722,
387 		.den_min = 1,
388 		.den_max = 128,
389 		.den_step = 1,
390 	}
391 };
392 
393 static snd_pcm_hw_constraint_ratnums_t old_hw_constraints_clocks  = {
394 	.nrats = 2,
395 	.rats = old_clocks,
396 };
397 
398 
399 static void snd_es18xx_rate_set(es18xx_t *chip,
400 				snd_pcm_substream_t *substream,
401 				int mode)
402 {
403 	unsigned int bits, div0;
404 	snd_pcm_runtime_t *runtime = substream->runtime;
405 	if (chip->caps & ES18XX_NEW_RATE) {
406 		if (runtime->rate_num == new_clocks[0].num)
407 			bits = 128 - runtime->rate_den;
408 		else
409 			bits = 256 - runtime->rate_den;
410 	} else {
411 		if (runtime->rate_num == old_clocks[0].num)
412 			bits = 256 - runtime->rate_den;
413 		else
414 			bits = 128 - runtime->rate_den;
415 	}
416 
417 	/* set filter register */
418 	div0 = 256 - 7160000*20/(8*82*runtime->rate);
419 
420 	if ((chip->caps & ES18XX_PCM2) && mode == DAC2) {
421 		snd_es18xx_mixer_write(chip, 0x70, bits);
422 		/*
423 		 * Comment from kernel oss driver:
424 		 * FKS: fascinating: 0x72 doesn't seem to work.
425 		 */
426 		snd_es18xx_write(chip, 0xA2, div0);
427 		snd_es18xx_mixer_write(chip, 0x72, div0);
428 	} else {
429 		snd_es18xx_write(chip, 0xA1, bits);
430 		snd_es18xx_write(chip, 0xA2, div0);
431 	}
432 }
433 
434 static int snd_es18xx_playback_hw_params(snd_pcm_substream_t * substream,
435 					 snd_pcm_hw_params_t * hw_params)
436 {
437 	es18xx_t *chip = snd_pcm_substream_chip(substream);
438 	int shift, err;
439 
440 	shift = 0;
441 	if (params_channels(hw_params) == 2)
442 		shift++;
443 	if (snd_pcm_format_width(params_format(hw_params)) == 16)
444 		shift++;
445 
446 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
447 		if ((chip->caps & ES18XX_DUPLEX_MONO) &&
448 		    (chip->capture_a_substream) &&
449 		    params_channels(hw_params) != 1) {
450 			_snd_pcm_hw_param_setempty(hw_params, SNDRV_PCM_HW_PARAM_CHANNELS);
451 			return -EBUSY;
452 		}
453 		chip->dma2_shift = shift;
454 	} else {
455 		chip->dma1_shift = shift;
456 	}
457 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
458 		return err;
459 	return 0;
460 }
461 
462 static int snd_es18xx_pcm_hw_free(snd_pcm_substream_t * substream)
463 {
464 	return snd_pcm_lib_free_pages(substream);
465 }
466 
467 static int snd_es18xx_playback1_prepare(es18xx_t *chip,
468 					snd_pcm_substream_t *substream)
469 {
470 	snd_pcm_runtime_t *runtime = substream->runtime;
471 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
472 	unsigned int count = snd_pcm_lib_period_bytes(substream);
473 
474 	chip->dma2_size = size;
475 
476         snd_es18xx_rate_set(chip, substream, DAC2);
477 
478         /* Transfer Count Reload */
479         count = 0x10000 - count;
480         snd_es18xx_mixer_write(chip, 0x74, count & 0xff);
481         snd_es18xx_mixer_write(chip, 0x76, count >> 8);
482 
483 	/* Set format */
484         snd_es18xx_mixer_bits(chip, 0x7A, 0x07,
485 			      ((runtime->channels == 1) ? 0x00 : 0x02) |
486 			      (snd_pcm_format_width(runtime->format) == 16 ? 0x01 : 0x00) |
487 			      (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x04));
488 
489         /* Set DMA controller */
490         snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
491 
492 	return 0;
493 }
494 
495 static int snd_es18xx_playback1_trigger(es18xx_t *chip,
496 					snd_pcm_substream_t * substream,
497 					int cmd)
498 {
499 	switch (cmd) {
500 	case SNDRV_PCM_TRIGGER_START:
501 	case SNDRV_PCM_TRIGGER_RESUME:
502 		if (chip->active & DAC2)
503 			return 0;
504 		chip->active |= DAC2;
505                 /* Start DMA */
506 		if (chip->dma2 >= 4)
507 			snd_es18xx_mixer_write(chip, 0x78, 0xb3);
508 		else
509 			snd_es18xx_mixer_write(chip, 0x78, 0x93);
510 #ifdef AVOID_POPS
511 		/* Avoid pops */
512                 udelay(100000);
513 		if (chip->caps & ES18XX_PCM2)
514 			/* Restore Audio 2 volume */
515 			snd_es18xx_mixer_write(chip, 0x7C, chip->audio2_vol);
516 		else
517 			/* Enable PCM output */
518 			snd_es18xx_dsp_command(chip, 0xD1);
519 #endif
520 		break;
521 	case SNDRV_PCM_TRIGGER_STOP:
522 	case SNDRV_PCM_TRIGGER_SUSPEND:
523 		if (!(chip->active & DAC2))
524 			return 0;
525 		chip->active &= ~DAC2;
526                 /* Stop DMA */
527                 snd_es18xx_mixer_write(chip, 0x78, 0x00);
528 #ifdef AVOID_POPS
529                 udelay(25000);
530 		if (chip->caps & ES18XX_PCM2)
531 			/* Set Audio 2 volume to 0 */
532 			snd_es18xx_mixer_write(chip, 0x7C, 0);
533 		else
534 			/* Disable PCM output */
535 			snd_es18xx_dsp_command(chip, 0xD3);
536 #endif
537 		break;
538 	default:
539 		return -EINVAL;
540 	}
541 
542 	return 0;
543 }
544 
545 static int snd_es18xx_capture_hw_params(snd_pcm_substream_t * substream,
546 					snd_pcm_hw_params_t * hw_params)
547 {
548 	es18xx_t *chip = snd_pcm_substream_chip(substream);
549 	int shift, err;
550 
551 	shift = 0;
552 	if ((chip->caps & ES18XX_DUPLEX_MONO) &&
553 	    chip->playback_a_substream &&
554 	    params_channels(hw_params) != 1) {
555 		_snd_pcm_hw_param_setempty(hw_params, SNDRV_PCM_HW_PARAM_CHANNELS);
556 		return -EBUSY;
557 	}
558 	if (params_channels(hw_params) == 2)
559 		shift++;
560 	if (snd_pcm_format_width(params_format(hw_params)) == 16)
561 		shift++;
562 	chip->dma1_shift = shift;
563 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
564 		return err;
565 	return 0;
566 }
567 
568 static int snd_es18xx_capture_prepare(snd_pcm_substream_t *substream)
569 {
570         es18xx_t *chip = snd_pcm_substream_chip(substream);
571 	snd_pcm_runtime_t *runtime = substream->runtime;
572 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
573 	unsigned int count = snd_pcm_lib_period_bytes(substream);
574 
575 	chip->dma1_size = size;
576 
577 	snd_es18xx_reset_fifo(chip);
578 
579         /* Set stereo/mono */
580         snd_es18xx_bits(chip, 0xA8, 0x03, runtime->channels == 1 ? 0x02 : 0x01);
581 
582         snd_es18xx_rate_set(chip, substream, ADC1);
583 
584         /* Transfer Count Reload */
585 	count = 0x10000 - count;
586 	snd_es18xx_write(chip, 0xA4, count & 0xff);
587 	snd_es18xx_write(chip, 0xA5, count >> 8);
588 
589 #ifdef AVOID_POPS
590 	udelay(100000);
591 #endif
592 
593         /* Set format */
594         snd_es18xx_write(chip, 0xB7,
595                          snd_pcm_format_unsigned(runtime->format) ? 0x51 : 0x71);
596         snd_es18xx_write(chip, 0xB7, 0x90 |
597                          ((runtime->channels == 1) ? 0x40 : 0x08) |
598                          (snd_pcm_format_width(runtime->format) == 16 ? 0x04 : 0x00) |
599                          (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x20));
600 
601         /* Set DMA controler */
602         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
603 
604 	return 0;
605 }
606 
607 static int snd_es18xx_capture_trigger(snd_pcm_substream_t *substream,
608 				      int cmd)
609 {
610         es18xx_t *chip = snd_pcm_substream_chip(substream);
611 
612 	switch (cmd) {
613 	case SNDRV_PCM_TRIGGER_START:
614 	case SNDRV_PCM_TRIGGER_RESUME:
615 		if (chip->active & ADC1)
616 			return 0;
617 		chip->active |= ADC1;
618                 /* Start DMA */
619                 snd_es18xx_write(chip, 0xB8, 0x0f);
620 		break;
621 	case SNDRV_PCM_TRIGGER_STOP:
622 	case SNDRV_PCM_TRIGGER_SUSPEND:
623 		if (!(chip->active & ADC1))
624 			return 0;
625 		chip->active &= ~ADC1;
626                 /* Stop DMA */
627                 snd_es18xx_write(chip, 0xB8, 0x00);
628 		break;
629 	default:
630 		return -EINVAL;
631 	}
632 
633 	return 0;
634 }
635 
636 static int snd_es18xx_playback2_prepare(es18xx_t *chip,
637 					snd_pcm_substream_t *substream)
638 {
639 	snd_pcm_runtime_t *runtime = substream->runtime;
640 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
641 	unsigned int count = snd_pcm_lib_period_bytes(substream);
642 
643 	chip->dma1_size = size;
644 
645 	snd_es18xx_reset_fifo(chip);
646 
647         /* Set stereo/mono */
648         snd_es18xx_bits(chip, 0xA8, 0x03, runtime->channels == 1 ? 0x02 : 0x01);
649 
650         snd_es18xx_rate_set(chip, substream, DAC1);
651 
652         /* Transfer Count Reload */
653 	count = 0x10000 - count;
654 	snd_es18xx_write(chip, 0xA4, count & 0xff);
655 	snd_es18xx_write(chip, 0xA5, count >> 8);
656 
657         /* Set format */
658         snd_es18xx_write(chip, 0xB6,
659                          snd_pcm_format_unsigned(runtime->format) ? 0x80 : 0x00);
660         snd_es18xx_write(chip, 0xB7,
661                          snd_pcm_format_unsigned(runtime->format) ? 0x51 : 0x71);
662         snd_es18xx_write(chip, 0xB7, 0x90 |
663                          (runtime->channels == 1 ? 0x40 : 0x08) |
664                          (snd_pcm_format_width(runtime->format) == 16 ? 0x04 : 0x00) |
665                          (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x20));
666 
667         /* Set DMA controler */
668         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
669 
670 	return 0;
671 }
672 
673 static int snd_es18xx_playback2_trigger(es18xx_t *chip,
674 					snd_pcm_substream_t *substream,
675 					int cmd)
676 {
677 	switch (cmd) {
678 	case SNDRV_PCM_TRIGGER_START:
679 	case SNDRV_PCM_TRIGGER_RESUME:
680 		if (chip->active & DAC1)
681 			return 0;
682 		chip->active |= DAC1;
683                 /* Start DMA */
684                 snd_es18xx_write(chip, 0xB8, 0x05);
685 #ifdef AVOID_POPS
686 		/* Avoid pops */
687                 udelay(100000);
688                 /* Enable Audio 1 */
689                 snd_es18xx_dsp_command(chip, 0xD1);
690 #endif
691 		break;
692 	case SNDRV_PCM_TRIGGER_STOP:
693 	case SNDRV_PCM_TRIGGER_SUSPEND:
694 		if (!(chip->active & DAC1))
695 			return 0;
696 		chip->active &= ~DAC1;
697                 /* Stop DMA */
698                 snd_es18xx_write(chip, 0xB8, 0x00);
699 #ifdef AVOID_POPS
700 		/* Avoid pops */
701                 udelay(25000);
702                 /* Disable Audio 1 */
703                 snd_es18xx_dsp_command(chip, 0xD3);
704 #endif
705 		break;
706 	default:
707 		return -EINVAL;
708 	}
709 
710 	return 0;
711 }
712 
713 static int snd_es18xx_playback_prepare(snd_pcm_substream_t *substream)
714 {
715         es18xx_t *chip = snd_pcm_substream_chip(substream);
716 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
717 		return snd_es18xx_playback1_prepare(chip, substream);
718 	else
719 		return snd_es18xx_playback2_prepare(chip, substream);
720 }
721 
722 static int snd_es18xx_playback_trigger(snd_pcm_substream_t *substream,
723 				       int cmd)
724 {
725         es18xx_t *chip = snd_pcm_substream_chip(substream);
726 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
727 		return snd_es18xx_playback1_trigger(chip, substream, cmd);
728 	else
729 		return snd_es18xx_playback2_trigger(chip, substream, cmd);
730 }
731 
732 static irqreturn_t snd_es18xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
733 {
734 	es18xx_t *chip = dev_id;
735 	unsigned char status;
736 
737 	if (chip->caps & ES18XX_CONTROL) {
738 		/* Read Interrupt status */
739 		status = inb(chip->ctrl_port + 6);
740 	} else {
741 		/* Read Interrupt status */
742 		status = snd_es18xx_mixer_read(chip, 0x7f) >> 4;
743 	}
744 #if 0
745 	else {
746 		status = 0;
747 		if (inb(chip->port + 0x0C) & 0x01)
748 			status |= AUDIO1_IRQ;
749 		if (snd_es18xx_mixer_read(chip, 0x7A) & 0x80)
750 			status |= AUDIO2_IRQ;
751 		if ((chip->caps & ES18XX_HWV) &&
752 		    snd_es18xx_mixer_read(chip, 0x64) & 0x10)
753 			status |= HWV_IRQ;
754 	}
755 #endif
756 
757 	/* Audio 1 & Audio 2 */
758         if (status & AUDIO2_IRQ) {
759                 if (chip->active & DAC2)
760                 	snd_pcm_period_elapsed(chip->playback_a_substream);
761 		/* ack interrupt */
762                 snd_es18xx_mixer_bits(chip, 0x7A, 0x80, 0x00);
763         }
764         if (status & AUDIO1_IRQ) {
765                 /* ok.. capture is active */
766                 if (chip->active & ADC1)
767                 	snd_pcm_period_elapsed(chip->capture_a_substream);
768                 /* ok.. playback2 is active */
769                 else if (chip->active & DAC1)
770                 	snd_pcm_period_elapsed(chip->playback_b_substream);
771 		/* ack interrupt */
772 		inb(chip->port + 0x0E);
773         }
774 
775 	/* MPU */
776 	if ((status & MPU_IRQ) && chip->rmidi)
777 		snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
778 
779 	/* Hardware volume */
780 	if (status & HWV_IRQ) {
781 		int split = snd_es18xx_mixer_read(chip, 0x64) & 0x80;
782 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
783 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
784 		if (!split) {
785 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->master_switch->id);
786 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->master_volume->id);
787 		}
788 		/* ack interrupt */
789 		snd_es18xx_mixer_write(chip, 0x66, 0x00);
790 	}
791 	return IRQ_HANDLED;
792 }
793 
794 static snd_pcm_uframes_t snd_es18xx_playback_pointer(snd_pcm_substream_t * substream)
795 {
796         es18xx_t *chip = snd_pcm_substream_chip(substream);
797 	int pos;
798 
799 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
800 		if (!(chip->active & DAC2))
801 			return 0;
802 		pos = snd_dma_pointer(chip->dma2, chip->dma2_size);
803 		return pos >> chip->dma2_shift;
804 	} else {
805 		if (!(chip->active & DAC1))
806 			return 0;
807 		pos = snd_dma_pointer(chip->dma1, chip->dma1_size);
808 		return pos >> chip->dma1_shift;
809 	}
810 }
811 
812 static snd_pcm_uframes_t snd_es18xx_capture_pointer(snd_pcm_substream_t * substream)
813 {
814         es18xx_t *chip = snd_pcm_substream_chip(substream);
815 	int pos;
816 
817         if (!(chip->active & ADC1))
818                 return 0;
819 	pos = snd_dma_pointer(chip->dma1, chip->dma1_size);
820 	return pos >> chip->dma1_shift;
821 }
822 
823 static snd_pcm_hardware_t snd_es18xx_playback =
824 {
825 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
826 				 SNDRV_PCM_INFO_RESUME |
827 				 SNDRV_PCM_INFO_MMAP_VALID),
828 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
829 				 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
830 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
831 	.rate_min =		4000,
832 	.rate_max =		48000,
833 	.channels_min =		1,
834 	.channels_max =		2,
835 	.buffer_bytes_max =	65536,
836 	.period_bytes_min =	64,
837 	.period_bytes_max =	65536,
838 	.periods_min =		1,
839 	.periods_max =		1024,
840 	.fifo_size =		0,
841 };
842 
843 static snd_pcm_hardware_t snd_es18xx_capture =
844 {
845 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
846 				 SNDRV_PCM_INFO_RESUME |
847 				 SNDRV_PCM_INFO_MMAP_VALID),
848 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
849 				 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
850 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
851 	.rate_min =		4000,
852 	.rate_max =		48000,
853 	.channels_min =		1,
854 	.channels_max =		2,
855 	.buffer_bytes_max =	65536,
856 	.period_bytes_min =	64,
857 	.period_bytes_max =	65536,
858 	.periods_min =		1,
859 	.periods_max =		1024,
860 	.fifo_size =		0,
861 };
862 
863 static int snd_es18xx_playback_open(snd_pcm_substream_t * substream)
864 {
865 	snd_pcm_runtime_t *runtime = substream->runtime;
866         es18xx_t *chip = snd_pcm_substream_chip(substream);
867 
868 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
869 		if ((chip->caps & ES18XX_DUPLEX_MONO) &&
870 		    chip->capture_a_substream &&
871 		    chip->capture_a_substream->runtime->channels != 1)
872 			return -EAGAIN;
873 		chip->playback_a_substream = substream;
874 	} else if (substream->number <= 1) {
875 		if (chip->capture_a_substream)
876 			return -EAGAIN;
877 		chip->playback_b_substream = substream;
878 	} else {
879 		snd_BUG();
880 		return -EINVAL;
881 	}
882 	substream->runtime->hw = snd_es18xx_playback;
883 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
884 				      (chip->caps & ES18XX_NEW_RATE) ? &new_hw_constraints_clocks : &old_hw_constraints_clocks);
885         return 0;
886 }
887 
888 static int snd_es18xx_capture_open(snd_pcm_substream_t * substream)
889 {
890 	snd_pcm_runtime_t *runtime = substream->runtime;
891         es18xx_t *chip = snd_pcm_substream_chip(substream);
892 
893         if (chip->playback_b_substream)
894                 return -EAGAIN;
895 	if ((chip->caps & ES18XX_DUPLEX_MONO) &&
896 	    chip->playback_a_substream &&
897 	    chip->playback_a_substream->runtime->channels != 1)
898 		return -EAGAIN;
899         chip->capture_a_substream = substream;
900 	substream->runtime->hw = snd_es18xx_capture;
901 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
902 				      (chip->caps & ES18XX_NEW_RATE) ? &new_hw_constraints_clocks : &old_hw_constraints_clocks);
903         return 0;
904 }
905 
906 static int snd_es18xx_playback_close(snd_pcm_substream_t * substream)
907 {
908         es18xx_t *chip = snd_pcm_substream_chip(substream);
909 
910 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
911 		chip->playback_a_substream = NULL;
912 	else
913 		chip->playback_b_substream = NULL;
914 
915 	snd_pcm_lib_free_pages(substream);
916 	return 0;
917 }
918 
919 static int snd_es18xx_capture_close(snd_pcm_substream_t * substream)
920 {
921         es18xx_t *chip = snd_pcm_substream_chip(substream);
922 
923         chip->capture_a_substream = NULL;
924 	snd_pcm_lib_free_pages(substream);
925         return 0;
926 }
927 
928 /*
929  *  MIXER part
930  */
931 
932 static int snd_es18xx_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
933 {
934 	static char *texts[8] = {
935 		"Mic", "Mic Master", "CD", "AOUT",
936 		"Mic1", "Mix", "Line", "Master"
937 	};
938 
939 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
940 	uinfo->count = 1;
941 	uinfo->value.enumerated.items = 8;
942 	if (uinfo->value.enumerated.item > 7)
943 		uinfo->value.enumerated.item = 7;
944 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
945 	return 0;
946 }
947 
948 static int snd_es18xx_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
949 {
950 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
951 	ucontrol->value.enumerated.item[0] = snd_es18xx_mixer_read(chip, 0x1c) & 0x07;
952 	return 0;
953 }
954 
955 static int snd_es18xx_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
956 {
957 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
958 	unsigned char val = ucontrol->value.enumerated.item[0];
959 
960 	if (val > 7)
961 		return -EINVAL;
962 	return snd_es18xx_mixer_bits(chip, 0x1c, 0x07, val) != val;
963 }
964 
965 static int snd_es18xx_info_spatializer_enable(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
966 {
967 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
968 	uinfo->count = 1;
969 	uinfo->value.integer.min = 0;
970 	uinfo->value.integer.max = 1;
971 	return 0;
972 }
973 
974 static int snd_es18xx_get_spatializer_enable(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
975 {
976 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
977 	unsigned char val = snd_es18xx_mixer_read(chip, 0x50);
978 	ucontrol->value.integer.value[0] = !!(val & 8);
979 	return 0;
980 }
981 
982 static int snd_es18xx_put_spatializer_enable(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
983 {
984 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
985 	unsigned char oval, nval;
986 	int change;
987 	nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
988 	oval = snd_es18xx_mixer_read(chip, 0x50) & 0x0c;
989 	change = nval != oval;
990 	if (change) {
991 		snd_es18xx_mixer_write(chip, 0x50, nval & ~0x04);
992 		snd_es18xx_mixer_write(chip, 0x50, nval);
993 	}
994 	return change;
995 }
996 
997 static int snd_es18xx_info_hw_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
998 {
999 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1000 	uinfo->count = 2;
1001 	uinfo->value.integer.min = 0;
1002 	uinfo->value.integer.max = 63;
1003 	return 0;
1004 }
1005 
1006 static int snd_es18xx_get_hw_volume(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1007 {
1008 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1009 	ucontrol->value.integer.value[0] = snd_es18xx_mixer_read(chip, 0x61) & 0x3f;
1010 	ucontrol->value.integer.value[1] = snd_es18xx_mixer_read(chip, 0x63) & 0x3f;
1011 	return 0;
1012 }
1013 
1014 static int snd_es18xx_info_hw_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1015 {
1016 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1017 	uinfo->count = 2;
1018 	uinfo->value.integer.min = 0;
1019 	uinfo->value.integer.max = 1;
1020 	return 0;
1021 }
1022 
1023 static int snd_es18xx_get_hw_switch(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1024 {
1025 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1026 	ucontrol->value.integer.value[0] = !(snd_es18xx_mixer_read(chip, 0x61) & 0x40);
1027 	ucontrol->value.integer.value[1] = !(snd_es18xx_mixer_read(chip, 0x63) & 0x40);
1028 	return 0;
1029 }
1030 
1031 static void snd_es18xx_hwv_free(snd_kcontrol_t *kcontrol)
1032 {
1033 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1034 	chip->master_volume = NULL;
1035 	chip->master_switch = NULL;
1036 	chip->hw_volume = NULL;
1037 	chip->hw_switch = NULL;
1038 }
1039 
1040 static int snd_es18xx_reg_bits(es18xx_t *chip, unsigned char reg,
1041 			       unsigned char mask, unsigned char val)
1042 {
1043 	if (reg < 0xa0)
1044 		return snd_es18xx_mixer_bits(chip, reg, mask, val);
1045 	else
1046 		return snd_es18xx_bits(chip, reg, mask, val);
1047 }
1048 
1049 static int snd_es18xx_reg_read(es18xx_t *chip, unsigned char reg)
1050 {
1051 	if (reg < 0xa0)
1052 		return snd_es18xx_mixer_read(chip, reg);
1053 	else
1054 		return snd_es18xx_read(chip, reg);
1055 }
1056 
1057 #define ES18XX_SINGLE(xname, xindex, reg, shift, mask, invert) \
1058 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1059   .info = snd_es18xx_info_single, \
1060   .get = snd_es18xx_get_single, .put = snd_es18xx_put_single, \
1061   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1062 
1063 static int snd_es18xx_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1064 {
1065 	int mask = (kcontrol->private_value >> 16) & 0xff;
1066 
1067 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1068 	uinfo->count = 1;
1069 	uinfo->value.integer.min = 0;
1070 	uinfo->value.integer.max = mask;
1071 	return 0;
1072 }
1073 
1074 static int snd_es18xx_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1075 {
1076 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1077 	int reg = kcontrol->private_value & 0xff;
1078 	int shift = (kcontrol->private_value >> 8) & 0xff;
1079 	int mask = (kcontrol->private_value >> 16) & 0xff;
1080 	int invert = (kcontrol->private_value >> 24) & 0xff;
1081 	int val;
1082 
1083 	val = snd_es18xx_reg_read(chip, reg);
1084 	ucontrol->value.integer.value[0] = (val >> shift) & mask;
1085 	if (invert)
1086 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1087 	return 0;
1088 }
1089 
1090 static int snd_es18xx_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1091 {
1092 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1093 	int reg = kcontrol->private_value & 0xff;
1094 	int shift = (kcontrol->private_value >> 8) & 0xff;
1095 	int mask = (kcontrol->private_value >> 16) & 0xff;
1096 	int invert = (kcontrol->private_value >> 24) & 0xff;
1097 	unsigned char val;
1098 
1099 	val = (ucontrol->value.integer.value[0] & mask);
1100 	if (invert)
1101 		val = mask - val;
1102 	mask <<= shift;
1103 	val <<= shift;
1104 	return snd_es18xx_reg_bits(chip, reg, mask, val) != val;
1105 }
1106 
1107 #define ES18XX_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1108 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1109   .info = snd_es18xx_info_double, \
1110   .get = snd_es18xx_get_double, .put = snd_es18xx_put_double, \
1111   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1112 
1113 static int snd_es18xx_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1114 {
1115 	int mask = (kcontrol->private_value >> 24) & 0xff;
1116 
1117 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1118 	uinfo->count = 2;
1119 	uinfo->value.integer.min = 0;
1120 	uinfo->value.integer.max = mask;
1121 	return 0;
1122 }
1123 
1124 static int snd_es18xx_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1125 {
1126 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1127 	int left_reg = kcontrol->private_value & 0xff;
1128 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1129 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1130 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1131 	int mask = (kcontrol->private_value >> 24) & 0xff;
1132 	int invert = (kcontrol->private_value >> 22) & 1;
1133 	unsigned char left, right;
1134 
1135 	left = snd_es18xx_reg_read(chip, left_reg);
1136 	if (left_reg != right_reg)
1137 		right = snd_es18xx_reg_read(chip, right_reg);
1138 	else
1139 		right = left;
1140 	ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1141 	ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1142 	if (invert) {
1143 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1144 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1145 	}
1146 	return 0;
1147 }
1148 
1149 static int snd_es18xx_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1150 {
1151 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1152 	int left_reg = kcontrol->private_value & 0xff;
1153 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1154 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1155 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1156 	int mask = (kcontrol->private_value >> 24) & 0xff;
1157 	int invert = (kcontrol->private_value >> 22) & 1;
1158 	int change;
1159 	unsigned char val1, val2, mask1, mask2;
1160 
1161 	val1 = ucontrol->value.integer.value[0] & mask;
1162 	val2 = ucontrol->value.integer.value[1] & mask;
1163 	if (invert) {
1164 		val1 = mask - val1;
1165 		val2 = mask - val2;
1166 	}
1167 	val1 <<= shift_left;
1168 	val2 <<= shift_right;
1169 	mask1 = mask << shift_left;
1170 	mask2 = mask << shift_right;
1171 	if (left_reg != right_reg) {
1172 		change = 0;
1173 		if (snd_es18xx_reg_bits(chip, left_reg, mask1, val1) != val1)
1174 			change = 1;
1175 		if (snd_es18xx_reg_bits(chip, right_reg, mask2, val2) != val2)
1176 			change = 1;
1177 	} else {
1178 		change = (snd_es18xx_reg_bits(chip, left_reg, mask1 | mask2,
1179 					      val1 | val2) != (val1 | val2));
1180 	}
1181 	return change;
1182 }
1183 
1184 static snd_kcontrol_new_t snd_es18xx_base_controls[] = {
1185 ES18XX_DOUBLE("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0),
1186 ES18XX_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1187 ES18XX_DOUBLE("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0),
1188 ES18XX_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1189 ES18XX_DOUBLE("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0),
1190 ES18XX_DOUBLE("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
1191 ES18XX_DOUBLE("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0),
1192 ES18XX_DOUBLE("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0),
1193 ES18XX_SINGLE("PC Speaker Playback Volume", 0, 0x3c, 0, 7, 0),
1194 ES18XX_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1195 ES18XX_DOUBLE("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0),
1196 ES18XX_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1197 {
1198 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1199 	.name = "Capture Source",
1200 	.info = snd_es18xx_info_mux,
1201 	.get = snd_es18xx_get_mux,
1202 	.put = snd_es18xx_put_mux,
1203 }
1204 };
1205 
1206 static snd_kcontrol_new_t snd_es18xx_mono_in_control =
1207 ES18XX_DOUBLE("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0);
1208 
1209 static snd_kcontrol_new_t snd_es18xx_recmix_controls[] = {
1210 ES18XX_DOUBLE("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0),
1211 ES18XX_DOUBLE("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0),
1212 ES18XX_DOUBLE("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0),
1213 ES18XX_DOUBLE("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0),
1214 ES18XX_DOUBLE("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0),
1215 ES18XX_DOUBLE("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0),
1216 ES18XX_DOUBLE("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0)
1217 };
1218 
1219 static snd_kcontrol_new_t snd_es18xx_pcm1_controls[] = {
1220 ES18XX_DOUBLE("PCM Playback Volume", 0, 0x14, 0x14, 4, 0, 15, 0),
1221 };
1222 
1223 static snd_kcontrol_new_t snd_es18xx_pcm2_controls[] = {
1224 ES18XX_DOUBLE("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0),
1225 ES18XX_DOUBLE("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0)
1226 };
1227 
1228 static snd_kcontrol_new_t snd_es18xx_spatializer_controls[] = {
1229 ES18XX_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1230 {
1231 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1232 	.name = "3D Control - Switch",
1233 	.info = snd_es18xx_info_spatializer_enable,
1234 	.get = snd_es18xx_get_spatializer_enable,
1235 	.put = snd_es18xx_put_spatializer_enable,
1236 }
1237 };
1238 
1239 static snd_kcontrol_new_t snd_es18xx_micpre1_control =
1240 ES18XX_SINGLE("Mic Boost (+26dB)", 0, 0xa9, 2, 1, 0);
1241 
1242 static snd_kcontrol_new_t snd_es18xx_micpre2_control =
1243 ES18XX_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0);
1244 
1245 static snd_kcontrol_new_t snd_es18xx_hw_volume_controls[] = {
1246 {
1247 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1248 	.name = "Hardware Master Playback Volume",
1249 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1250 	.info = snd_es18xx_info_hw_volume,
1251 	.get = snd_es18xx_get_hw_volume,
1252 },
1253 {
1254 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1255 	.name = "Hardware Master Playback Switch",
1256 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1257 	.info = snd_es18xx_info_hw_switch,
1258 	.get = snd_es18xx_get_hw_switch,
1259 },
1260 ES18XX_SINGLE("Hardware Master Volume Split", 0, 0x64, 7, 1, 0),
1261 };
1262 
1263 #if 0
1264 static int __devinit snd_es18xx_config_read(es18xx_t *chip, unsigned char reg)
1265 {
1266 	int data;
1267 	unsigned long flags;
1268         spin_lock_irqsave(&chip->ctrl_lock, flags);
1269 	outb(reg, chip->ctrl_port);
1270 	data = inb(chip->ctrl_port + 1);
1271         spin_unlock_irqrestore(&chip->ctrl_lock, flags);
1272 	return data;
1273 }
1274 #endif
1275 
1276 static void __devinit snd_es18xx_config_write(es18xx_t *chip,
1277 					      unsigned char reg, unsigned char data)
1278 {
1279 	/* No need for spinlocks, this function is used only in
1280 	   otherwise protected init code */
1281 	outb(reg, chip->ctrl_port);
1282 	outb(data, chip->ctrl_port + 1);
1283 #ifdef REG_DEBUG
1284 	snd_printk("Config reg %02x set to %02x\n", reg, data);
1285 #endif
1286 }
1287 
1288 static int __devinit snd_es18xx_initialize(es18xx_t *chip)
1289 {
1290 	int mask = 0;
1291 
1292         /* enable extended mode */
1293         snd_es18xx_dsp_command(chip, 0xC6);
1294 	/* Reset mixer registers */
1295 	snd_es18xx_mixer_write(chip, 0x00, 0x00);
1296 
1297         /* Audio 1 DMA demand mode (4 bytes/request) */
1298         snd_es18xx_write(chip, 0xB9, 2);
1299 	if (chip->caps & ES18XX_CONTROL) {
1300 		/* Hardware volume IRQ */
1301 		snd_es18xx_config_write(chip, 0x27, chip->irq);
1302 		if (chip->fm_port > 0 && chip->fm_port != SNDRV_AUTO_PORT) {
1303 			/* FM I/O */
1304 			snd_es18xx_config_write(chip, 0x62, chip->fm_port >> 8);
1305 			snd_es18xx_config_write(chip, 0x63, chip->fm_port & 0xff);
1306 		}
1307 		if (chip->mpu_port > 0 && chip->mpu_port != SNDRV_AUTO_PORT) {
1308 			/* MPU-401 I/O */
1309 			snd_es18xx_config_write(chip, 0x64, chip->mpu_port >> 8);
1310 			snd_es18xx_config_write(chip, 0x65, chip->mpu_port & 0xff);
1311 			/* MPU-401 IRQ */
1312 			snd_es18xx_config_write(chip, 0x28, chip->irq);
1313 		}
1314 		/* Audio1 IRQ */
1315 		snd_es18xx_config_write(chip, 0x70, chip->irq);
1316 		/* Audio2 IRQ */
1317 		snd_es18xx_config_write(chip, 0x72, chip->irq);
1318 		/* Audio1 DMA */
1319 		snd_es18xx_config_write(chip, 0x74, chip->dma1);
1320 		/* Audio2 DMA */
1321 		snd_es18xx_config_write(chip, 0x75, chip->dma2);
1322 
1323 		/* Enable Audio 1 IRQ */
1324 		snd_es18xx_write(chip, 0xB1, 0x50);
1325 		/* Enable Audio 2 IRQ */
1326 		snd_es18xx_mixer_write(chip, 0x7A, 0x40);
1327 		/* Enable Audio 1 DMA */
1328 		snd_es18xx_write(chip, 0xB2, 0x50);
1329 		/* Enable MPU and hardware volume interrupt */
1330 		snd_es18xx_mixer_write(chip, 0x64, 0x42);
1331 	}
1332 	else {
1333 		int irqmask, dma1mask, dma2mask;
1334 		switch (chip->irq) {
1335 		case 2:
1336 		case 9:
1337 			irqmask = 0;
1338 			break;
1339 		case 5:
1340 			irqmask = 1;
1341 			break;
1342 		case 7:
1343 			irqmask = 2;
1344 			break;
1345 		case 10:
1346 			irqmask = 3;
1347 			break;
1348 		default:
1349 			snd_printk("invalid irq %d\n", chip->irq);
1350 			return -ENODEV;
1351 		}
1352 		switch (chip->dma1) {
1353 		case 0:
1354 			dma1mask = 1;
1355 			break;
1356 		case 1:
1357 			dma1mask = 2;
1358 			break;
1359 		case 3:
1360 			dma1mask = 3;
1361 			break;
1362 		default:
1363 			snd_printk("invalid dma1 %d\n", chip->dma1);
1364 			return -ENODEV;
1365 		}
1366 		switch (chip->dma2) {
1367 		case 0:
1368 			dma2mask = 0;
1369 			break;
1370 		case 1:
1371 			dma2mask = 1;
1372 			break;
1373 		case 3:
1374 			dma2mask = 2;
1375 			break;
1376 		case 5:
1377 			dma2mask = 3;
1378 			break;
1379 		default:
1380 			snd_printk("invalid dma2 %d\n", chip->dma2);
1381 			return -ENODEV;
1382 		}
1383 
1384 		/* Enable and set Audio 1 IRQ */
1385 		snd_es18xx_write(chip, 0xB1, 0x50 | (irqmask << 2));
1386 		/* Enable and set Audio 1 DMA */
1387 		snd_es18xx_write(chip, 0xB2, 0x50 | (dma1mask << 2));
1388 		/* Set Audio 2 DMA */
1389 		snd_es18xx_mixer_bits(chip, 0x7d, 0x07, 0x04 | dma2mask);
1390 		/* Enable Audio 2 IRQ and DMA
1391 		   Set capture mixer input */
1392 		snd_es18xx_mixer_write(chip, 0x7A, 0x68);
1393 		/* Enable and set hardware volume interrupt */
1394 		snd_es18xx_mixer_write(chip, 0x64, 0x06);
1395 		if (chip->mpu_port > 0 && chip->mpu_port != SNDRV_AUTO_PORT) {
1396 			/* MPU401 share irq with audio
1397 			   Joystick enabled
1398 			   FM enabled */
1399 			snd_es18xx_mixer_write(chip, 0x40, 0x43 | (chip->mpu_port & 0xf0) >> 1);
1400 		}
1401 		snd_es18xx_mixer_write(chip, 0x7f, ((irqmask + 1) << 1) | 0x01);
1402 	}
1403 	if (chip->caps & ES18XX_NEW_RATE) {
1404 		/* Change behaviour of register A1
1405 		   4x oversampling
1406 		   2nd channel DAC asynchronous */
1407 		snd_es18xx_mixer_write(chip, 0x71, 0x32);
1408 	}
1409 	if (!(chip->caps & ES18XX_PCM2)) {
1410 		/* Enable DMA FIFO */
1411 		snd_es18xx_write(chip, 0xB7, 0x80);
1412 	}
1413 	if (chip->caps & ES18XX_SPATIALIZER) {
1414 		/* Set spatializer parameters to recommended values */
1415 		snd_es18xx_mixer_write(chip, 0x54, 0x8f);
1416 		snd_es18xx_mixer_write(chip, 0x56, 0x95);
1417 		snd_es18xx_mixer_write(chip, 0x58, 0x94);
1418 		snd_es18xx_mixer_write(chip, 0x5a, 0x80);
1419 	}
1420 	/* Mute input source */
1421 	if (chip->caps & ES18XX_MUTEREC)
1422 		mask = 0x10;
1423 	if (chip->caps & ES18XX_RECMIX)
1424 		snd_es18xx_mixer_write(chip, 0x1c, 0x05 | mask);
1425 	else {
1426 		snd_es18xx_mixer_write(chip, 0x1c, 0x00 | mask);
1427 		snd_es18xx_write(chip, 0xb4, 0x00);
1428 	}
1429 #ifndef AVOID_POPS
1430 	/* Enable PCM output */
1431 	snd_es18xx_dsp_command(chip, 0xD1);
1432 #endif
1433 
1434         return 0;
1435 }
1436 
1437 static int __devinit snd_es18xx_identify(es18xx_t *chip)
1438 {
1439 	int hi,lo;
1440 
1441 	/* reset */
1442 	if (snd_es18xx_reset(chip) < 0) {
1443                 snd_printk("reset at 0x%lx failed!!!\n", chip->port);
1444 		return -ENODEV;
1445 	}
1446 
1447 	snd_es18xx_dsp_command(chip, 0xe7);
1448 	hi = snd_es18xx_dsp_get_byte(chip);
1449 	if (hi < 0) {
1450 		return hi;
1451 	}
1452 	lo = snd_es18xx_dsp_get_byte(chip);
1453 	if ((lo & 0xf0) != 0x80) {
1454 		return -ENODEV;
1455 	}
1456 	if (hi == 0x48) {
1457 		chip->version = 0x488;
1458 		return 0;
1459 	}
1460 	if (hi != 0x68) {
1461 		return -ENODEV;
1462 	}
1463 	if ((lo & 0x0f) < 8) {
1464 		chip->version = 0x688;
1465 		return 0;
1466 	}
1467 
1468         outb(0x40, chip->port + 0x04);
1469 	hi = inb(chip->port + 0x05);
1470 	lo = inb(chip->port + 0x05);
1471 	if (hi != lo) {
1472 		chip->version = hi << 8 | lo;
1473 		chip->ctrl_port = inb(chip->port + 0x05) << 8;
1474 		chip->ctrl_port += inb(chip->port + 0x05);
1475 
1476 		if ((chip->res_ctrl_port = request_region(chip->ctrl_port, 8, "ES18xx - CTRL")) == NULL) {
1477 			snd_printk(KERN_ERR PFX "unable go grab port 0x%lx\n", chip->ctrl_port);
1478 			return -EBUSY;
1479 		}
1480 
1481 		return 0;
1482 	}
1483 
1484 	/* If has Hardware volume */
1485 	if (snd_es18xx_mixer_writable(chip, 0x64, 0x04)) {
1486 		/* If has Audio2 */
1487 		if (snd_es18xx_mixer_writable(chip, 0x70, 0x7f)) {
1488 			/* If has volume count */
1489 			if (snd_es18xx_mixer_writable(chip, 0x64, 0x20)) {
1490 				chip->version = 0x1887;
1491 			} else {
1492 				chip->version = 0x1888;
1493 			}
1494 		} else {
1495 			chip->version = 0x1788;
1496 		}
1497 	}
1498 	else
1499 		chip->version = 0x1688;
1500 	return 0;
1501 }
1502 
1503 static int __devinit snd_es18xx_probe(es18xx_t *chip)
1504 {
1505 	if (snd_es18xx_identify(chip) < 0) {
1506 		snd_printk(KERN_ERR PFX "[0x%lx] ESS chip not found\n", chip->port);
1507                 return -ENODEV;
1508 	}
1509 
1510 	switch (chip->version) {
1511 	case 0x1868:
1512 		chip->caps = ES18XX_DUPLEX_MONO | ES18XX_DUPLEX_SAME | ES18XX_CONTROL | ES18XX_HWV;
1513 		break;
1514 	case 0x1869:
1515 		chip->caps = ES18XX_PCM2 | ES18XX_SPATIALIZER | ES18XX_RECMIX | ES18XX_NEW_RATE | ES18XX_AUXB | ES18XX_MONO | ES18XX_MUTEREC | ES18XX_CONTROL | ES18XX_HWV;
1516 		break;
1517 	case 0x1878:
1518 		chip->caps = ES18XX_DUPLEX_MONO | ES18XX_DUPLEX_SAME | ES18XX_I2S | ES18XX_CONTROL | ES18XX_HWV;
1519 		break;
1520 	case 0x1879:
1521 		chip->caps = ES18XX_PCM2 | ES18XX_SPATIALIZER | ES18XX_RECMIX | ES18XX_NEW_RATE | ES18XX_AUXB | ES18XX_I2S | ES18XX_CONTROL | ES18XX_HWV;
1522 		break;
1523 	case 0x1887:
1524 		chip->caps = ES18XX_PCM2 | ES18XX_RECMIX | ES18XX_AUXB | ES18XX_DUPLEX_SAME | ES18XX_HWV;
1525 		break;
1526 	case 0x1888:
1527 		chip->caps = ES18XX_PCM2 | ES18XX_RECMIX | ES18XX_AUXB | ES18XX_DUPLEX_SAME | ES18XX_HWV;
1528 		break;
1529 	default:
1530                 snd_printk("[0x%lx] unsupported chip ES%x\n",
1531                            chip->port, chip->version);
1532                 return -ENODEV;
1533         }
1534 
1535         snd_printd("[0x%lx] ESS%x chip found\n", chip->port, chip->version);
1536 
1537 	if (chip->dma1 == chip->dma2)
1538 		chip->caps &= ~(ES18XX_PCM2 | ES18XX_DUPLEX_SAME);
1539 
1540         return snd_es18xx_initialize(chip);
1541 }
1542 
1543 static snd_pcm_ops_t snd_es18xx_playback_ops = {
1544 	.open =		snd_es18xx_playback_open,
1545 	.close =	snd_es18xx_playback_close,
1546 	.ioctl =	snd_pcm_lib_ioctl,
1547 	.hw_params =	snd_es18xx_playback_hw_params,
1548 	.hw_free =	snd_es18xx_pcm_hw_free,
1549 	.prepare =	snd_es18xx_playback_prepare,
1550 	.trigger =	snd_es18xx_playback_trigger,
1551 	.pointer =	snd_es18xx_playback_pointer,
1552 };
1553 
1554 static snd_pcm_ops_t snd_es18xx_capture_ops = {
1555 	.open =		snd_es18xx_capture_open,
1556 	.close =	snd_es18xx_capture_close,
1557 	.ioctl =	snd_pcm_lib_ioctl,
1558 	.hw_params =	snd_es18xx_capture_hw_params,
1559 	.hw_free =	snd_es18xx_pcm_hw_free,
1560 	.prepare =	snd_es18xx_capture_prepare,
1561 	.trigger =	snd_es18xx_capture_trigger,
1562 	.pointer =	snd_es18xx_capture_pointer,
1563 };
1564 
1565 static void snd_es18xx_pcm_free(snd_pcm_t *pcm)
1566 {
1567 	es18xx_t *codec = pcm->private_data;
1568 	codec->pcm = NULL;
1569 	snd_pcm_lib_preallocate_free_for_all(pcm);
1570 }
1571 
1572 static int __devinit snd_es18xx_pcm(es18xx_t *chip, int device, snd_pcm_t ** rpcm)
1573 {
1574         snd_pcm_t *pcm;
1575 	char str[16];
1576 	int err;
1577 
1578 	if (rpcm)
1579 		*rpcm = NULL;
1580 	sprintf(str, "ES%x", chip->version);
1581 	if (chip->caps & ES18XX_PCM2) {
1582 		err = snd_pcm_new(chip->card, str, device, 2, 1, &pcm);
1583 	} else {
1584 		err = snd_pcm_new(chip->card, str, device, 1, 1, &pcm);
1585 	}
1586         if (err < 0)
1587                 return err;
1588 
1589 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es18xx_playback_ops);
1590 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es18xx_capture_ops);
1591 
1592 	/* global setup */
1593         pcm->private_data = chip;
1594 	pcm->private_free = snd_es18xx_pcm_free;
1595         pcm->info_flags = 0;
1596 	if (chip->caps & ES18XX_DUPLEX_SAME)
1597 		pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1598 	if (! (chip->caps & ES18XX_PCM2))
1599 		pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1600 	sprintf(pcm->name, "ESS AudioDrive ES%x", chip->version);
1601         chip->pcm = pcm;
1602 
1603 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1604 					      snd_dma_isa_data(),
1605 					      64*1024,
1606 					      chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1607 
1608         if (rpcm)
1609         	*rpcm = pcm;
1610 	return 0;
1611 }
1612 
1613 /* Power Management support functions */
1614 #ifdef CONFIG_PM
1615 static int snd_es18xx_suspend(snd_card_t *card, pm_message_t state)
1616 {
1617 	es18xx_t *chip = card->pm_private_data;
1618 
1619 	snd_pcm_suspend_all(chip->pcm);
1620 
1621 	/* power down */
1622 	chip->pm_reg = (unsigned char)snd_es18xx_read(chip, ES18XX_PM);
1623 	chip->pm_reg |= (ES18XX_PM_FM | ES18XX_PM_SUS);
1624 	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg);
1625 	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg ^= ES18XX_PM_SUS);
1626 
1627 	return 0;
1628 }
1629 
1630 static int snd_es18xx_resume(snd_card_t *card)
1631 {
1632 	es18xx_t *chip = card->pm_private_data;
1633 
1634 	/* restore PM register, we won't wake till (not 0x07) i/o activity though */
1635 	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg ^= ES18XX_PM_FM);
1636 
1637 	return 0;
1638 }
1639 #endif /* CONFIG_PM */
1640 
1641 static int snd_es18xx_free(es18xx_t *chip)
1642 {
1643 	if (chip->res_port) {
1644 		release_resource(chip->res_port);
1645 		kfree_nocheck(chip->res_port);
1646 	}
1647 	if (chip->res_ctrl_port) {
1648 		release_resource(chip->res_ctrl_port);
1649 		kfree_nocheck(chip->res_ctrl_port);
1650 	}
1651 	if (chip->res_mpu_port) {
1652 		release_resource(chip->res_mpu_port);
1653 		kfree_nocheck(chip->res_mpu_port);
1654 	}
1655 	if (chip->irq >= 0)
1656 		free_irq(chip->irq, (void *) chip);
1657 	if (chip->dma1 >= 0) {
1658 		disable_dma(chip->dma1);
1659 		free_dma(chip->dma1);
1660 	}
1661 	if (chip->dma2 >= 0 && chip->dma1 != chip->dma2) {
1662 		disable_dma(chip->dma2);
1663 		free_dma(chip->dma2);
1664 	}
1665 	kfree(chip);
1666 	return 0;
1667 }
1668 
1669 static int snd_es18xx_dev_free(snd_device_t *device)
1670 {
1671 	es18xx_t *chip = device->device_data;
1672 	return snd_es18xx_free(chip);
1673 }
1674 
1675 static int __devinit snd_es18xx_new_device(snd_card_t * card,
1676 					   unsigned long port,
1677 					   unsigned long mpu_port,
1678 					   unsigned long fm_port,
1679 					   int irq, int dma1, int dma2,
1680 					   es18xx_t ** rchip)
1681 {
1682         es18xx_t *chip;
1683 	static snd_device_ops_t ops = {
1684 		.dev_free =	snd_es18xx_dev_free,
1685         };
1686 	int err;
1687 
1688 	*rchip = NULL;
1689         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
1690 	if (chip == NULL)
1691 		return -ENOMEM;
1692 	spin_lock_init(&chip->reg_lock);
1693  	spin_lock_init(&chip->mixer_lock);
1694  	spin_lock_init(&chip->ctrl_lock);
1695         chip->card = card;
1696         chip->port = port;
1697         chip->mpu_port = mpu_port;
1698         chip->fm_port = fm_port;
1699         chip->irq = -1;
1700         chip->dma1 = -1;
1701         chip->dma2 = -1;
1702         chip->audio2_vol = 0x00;
1703 	chip->active = 0;
1704 
1705 	if ((chip->res_port = request_region(port, 16, "ES18xx")) == NULL) {
1706 		snd_es18xx_free(chip);
1707 		snd_printk(KERN_ERR PFX "unable to grap ports 0x%lx-0x%lx\n", port, port + 16 - 1);
1708 		return -EBUSY;
1709 	}
1710 
1711 	if (request_irq(irq, snd_es18xx_interrupt, SA_INTERRUPT, "ES18xx", (void *) chip)) {
1712 		snd_es18xx_free(chip);
1713 		snd_printk(KERN_ERR PFX "unable to grap IRQ %d\n", irq);
1714 		return -EBUSY;
1715 	}
1716 	chip->irq = irq;
1717 
1718 	if (request_dma(dma1, "ES18xx DMA 1")) {
1719 		snd_es18xx_free(chip);
1720 		snd_printk(KERN_ERR PFX "unable to grap DMA1 %d\n", dma1);
1721 		return -EBUSY;
1722 	}
1723 	chip->dma1 = dma1;
1724 
1725 	if (dma2 != dma1 && request_dma(dma2, "ES18xx DMA 2")) {
1726 		snd_es18xx_free(chip);
1727 		snd_printk(KERN_ERR PFX "unable to grap DMA2 %d\n", dma2);
1728 		return -EBUSY;
1729 	}
1730 	chip->dma2 = dma2;
1731 
1732         if (snd_es18xx_probe(chip) < 0) {
1733                 snd_es18xx_free(chip);
1734                 return -ENODEV;
1735         }
1736 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1737 		snd_es18xx_free(chip);
1738 		return err;
1739 	}
1740         *rchip = chip;
1741         return 0;
1742 }
1743 
1744 static int __devinit snd_es18xx_mixer(es18xx_t *chip)
1745 {
1746 	snd_card_t *card;
1747 	int err;
1748 	unsigned int idx;
1749 
1750 	card = chip->card;
1751 
1752 	strcpy(card->mixername, chip->pcm->name);
1753 
1754 	for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_base_controls); idx++) {
1755 		snd_kcontrol_t *kctl;
1756 		kctl = snd_ctl_new1(&snd_es18xx_base_controls[idx], chip);
1757 		if (chip->caps & ES18XX_HWV) {
1758 			switch (idx) {
1759 			case 0:
1760 				chip->master_volume = kctl;
1761 				kctl->private_free = snd_es18xx_hwv_free;
1762 				break;
1763 			case 1:
1764 				chip->master_switch = kctl;
1765 				kctl->private_free = snd_es18xx_hwv_free;
1766 				break;
1767 			}
1768 		}
1769 		if ((err = snd_ctl_add(card, kctl)) < 0)
1770 			return err;
1771 	}
1772 	if (chip->caps & ES18XX_PCM2) {
1773 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_pcm2_controls); idx++) {
1774 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_pcm2_controls[idx], chip))) < 0)
1775 				return err;
1776 		}
1777 	} else {
1778 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_pcm1_controls); idx++) {
1779 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_pcm1_controls[idx], chip))) < 0)
1780 				return err;
1781 		}
1782 	}
1783 
1784 	if (chip->caps & ES18XX_MONO) {
1785 		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_mono_in_control, chip))) < 0)
1786 			return err;
1787 	}
1788 	if (chip->caps & ES18XX_RECMIX) {
1789 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_recmix_controls); idx++) {
1790 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_recmix_controls[idx], chip))) < 0)
1791 				return err;
1792 		}
1793 	}
1794 	switch (chip->version) {
1795 	default:
1796 		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_micpre1_control, chip))) < 0)
1797 			return err;
1798 		break;
1799 	case 0x1869:
1800 	case 0x1879:
1801 		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_micpre2_control, chip))) < 0)
1802 			return err;
1803 		break;
1804 	}
1805 	if (chip->caps & ES18XX_SPATIALIZER) {
1806 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_spatializer_controls); idx++) {
1807 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_spatializer_controls[idx], chip))) < 0)
1808 				return err;
1809 		}
1810 	}
1811 	if (chip->caps & ES18XX_HWV) {
1812 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_hw_volume_controls); idx++) {
1813 			snd_kcontrol_t *kctl;
1814 			kctl = snd_ctl_new1(&snd_es18xx_hw_volume_controls[idx], chip);
1815 			if (idx == 0)
1816 				chip->hw_volume = kctl;
1817 			else
1818 				chip->hw_switch = kctl;
1819 			kctl->private_free = snd_es18xx_hwv_free;
1820 			if ((err = snd_ctl_add(card, kctl)) < 0)
1821 				return err;
1822 
1823 		}
1824 	}
1825 	return 0;
1826 }
1827 
1828 
1829 /* Card level */
1830 
1831 MODULE_AUTHOR("Christian Fischbach <fishbach@pool.informatik.rwth-aachen.de>, Abramo Bagnara <abramo@alsa-project.org>");
1832 MODULE_DESCRIPTION("ESS ES18xx AudioDrive");
1833 MODULE_LICENSE("GPL");
1834 MODULE_SUPPORTED_DEVICE("{{ESS,ES1868 PnP AudioDrive},"
1835 		"{ESS,ES1869 PnP AudioDrive},"
1836 		"{ESS,ES1878 PnP AudioDrive},"
1837 		"{ESS,ES1879 PnP AudioDrive},"
1838 		"{ESS,ES1887 PnP AudioDrive},"
1839 		"{ESS,ES1888 PnP AudioDrive},"
1840 		"{ESS,ES1887 AudioDrive},"
1841 		"{ESS,ES1888 AudioDrive}}");
1842 
1843 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
1844 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
1845 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP; /* Enable this card */
1846 #ifdef CONFIG_PNP
1847 static int isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
1848 #endif
1849 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240,0x260,0x280 */
1850 #ifndef CONFIG_PNP
1851 static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
1852 #else
1853 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
1854 #endif
1855 static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
1856 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
1857 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
1858 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
1859 
1860 module_param_array(index, int, NULL, 0444);
1861 MODULE_PARM_DESC(index, "Index value for ES18xx soundcard.");
1862 module_param_array(id, charp, NULL, 0444);
1863 MODULE_PARM_DESC(id, "ID string for ES18xx soundcard.");
1864 module_param_array(enable, bool, NULL, 0444);
1865 MODULE_PARM_DESC(enable, "Enable ES18xx soundcard.");
1866 #ifdef CONFIG_PNP
1867 module_param_array(isapnp, bool, NULL, 0444);
1868 MODULE_PARM_DESC(isapnp, "PnP detection for specified soundcard.");
1869 #endif
1870 module_param_array(port, long, NULL, 0444);
1871 MODULE_PARM_DESC(port, "Port # for ES18xx driver.");
1872 module_param_array(mpu_port, long, NULL, 0444);
1873 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for ES18xx driver.");
1874 module_param_array(fm_port, long, NULL, 0444);
1875 MODULE_PARM_DESC(fm_port, "FM port # for ES18xx driver.");
1876 module_param_array(irq, int, NULL, 0444);
1877 MODULE_PARM_DESC(irq, "IRQ # for ES18xx driver.");
1878 module_param_array(dma1, int, NULL, 0444);
1879 MODULE_PARM_DESC(dma1, "DMA 1 # for ES18xx driver.");
1880 module_param_array(dma2, int, NULL, 0444);
1881 MODULE_PARM_DESC(dma2, "DMA 2 # for ES18xx driver.");
1882 
1883 struct snd_audiodrive {
1884 #ifdef CONFIG_PNP
1885 	struct pnp_dev *dev;
1886 	struct pnp_dev *devc;
1887 #endif
1888 };
1889 
1890 static snd_card_t *snd_audiodrive_legacy[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
1891 
1892 #ifdef CONFIG_PNP
1893 
1894 static struct pnp_card_device_id snd_audiodrive_pnpids[] = {
1895 	/* ESS 1868 (integrated on Compaq dual P-Pro motherboard and Genius 18PnP 3D) */
1896 	{ .id = "ESS1868", .devs = { { "ESS1868" }, { "ESS0000" } } },
1897 	/* ESS 1868 (integrated on Maxisound Cards) */
1898 	{ .id = "ESS1868", .devs = { { "ESS8601" }, { "ESS8600" } } },
1899 	/* ESS 1868 (integrated on Maxisound Cards) */
1900 	{ .id = "ESS1868", .devs = { { "ESS8611" }, { "ESS8610" } } },
1901 	/* ESS ES1869 Plug and Play AudioDrive */
1902 	{ .id = "ESS0003", .devs = { { "ESS1869" }, { "ESS0006" } } },
1903 	/* ESS 1869 */
1904 	{ .id = "ESS1869", .devs = { { "ESS1869" }, { "ESS0006" } } },
1905 	/* ESS 1878 */
1906 	{ .id = "ESS1878", .devs = { { "ESS1878" }, { "ESS0004" } } },
1907 	/* ESS 1879 */
1908 	{ .id = "ESS1879", .devs = { { "ESS1879" }, { "ESS0009" } } },
1909 	/* --- */
1910 	{ .id = "" } /* end */
1911 };
1912 
1913 MODULE_DEVICE_TABLE(pnp_card, snd_audiodrive_pnpids);
1914 
1915 static int __devinit snd_audiodrive_pnp(int dev, struct snd_audiodrive *acard,
1916 					struct pnp_card_link *card,
1917 					const struct pnp_card_device_id *id)
1918 {
1919 	struct pnp_dev *pdev;
1920 	struct pnp_resource_table * cfg = kmalloc(sizeof(struct pnp_resource_table), GFP_KERNEL);
1921 	int err;
1922 
1923 	if (!cfg)
1924 		return -ENOMEM;
1925 	acard->dev = pnp_request_card_device(card, id->devs[0].id, NULL);
1926 	if (acard->dev == NULL) {
1927 		kfree(cfg);
1928 		return -EBUSY;
1929 	}
1930 	acard->devc = pnp_request_card_device(card, id->devs[1].id, NULL);
1931 	if (acard->devc == NULL) {
1932 		kfree(cfg);
1933 		return -EBUSY;
1934 	}
1935 	/* Control port initialization */
1936 	err = pnp_activate_dev(acard->devc);
1937 	if (err < 0) {
1938 		snd_printk(KERN_ERR PFX "PnP control configure failure (out of resources?)\n");
1939 		return -EAGAIN;
1940 	}
1941 	snd_printdd("pnp: port=0x%lx\n", pnp_port_start(acard->devc, 0));
1942 	/* PnP initialization */
1943 	pdev = acard->dev;
1944 	pnp_init_resource_table(cfg);
1945 	if (port[dev] != SNDRV_AUTO_PORT)
1946 		pnp_resource_change(&cfg->port_resource[0], port[dev], 16);
1947 	if (fm_port[dev] != SNDRV_AUTO_PORT)
1948 		pnp_resource_change(&cfg->port_resource[1], fm_port[dev], 4);
1949 	if (mpu_port[dev] != SNDRV_AUTO_PORT)
1950 		pnp_resource_change(&cfg->port_resource[2], mpu_port[dev], 2);
1951 	if (dma1[dev] != SNDRV_AUTO_DMA)
1952 		pnp_resource_change(&cfg->dma_resource[0], dma1[dev], 1);
1953 	if (dma2[dev] != SNDRV_AUTO_DMA)
1954 		pnp_resource_change(&cfg->dma_resource[1], dma2[dev], 1);
1955 	if (irq[dev] != SNDRV_AUTO_IRQ)
1956 		pnp_resource_change(&cfg->irq_resource[0], irq[dev], 1);
1957 	err = pnp_manual_config_dev(pdev, cfg, 0);
1958 	if (err < 0)
1959 		snd_printk(KERN_ERR PFX "PnP manual resources are invalid, using auto config\n");
1960 	err = pnp_activate_dev(pdev);
1961 	if (err < 0) {
1962 		snd_printk(KERN_ERR PFX "PnP configure failure (out of resources?)\n");
1963 		kfree(cfg);
1964 		return -EBUSY;
1965 	}
1966 	/* ok. hack using Vendor-Defined Card-Level registers */
1967 	/* skip csn and logdev initialization - already done in isapnp_configure */
1968 	if (pnp_device_is_isapnp(pdev)) {
1969 		isapnp_cfg_begin(isapnp_card_number(pdev), isapnp_csn_number(pdev));
1970 		isapnp_write_byte(0x27, pnp_irq(pdev, 0));	/* Hardware Volume IRQ Number */
1971 		if (mpu_port[dev] != SNDRV_AUTO_PORT)
1972 			isapnp_write_byte(0x28, pnp_irq(pdev, 0)); /* MPU-401 IRQ Number */
1973 		isapnp_write_byte(0x72, pnp_irq(pdev, 0));	/* second IRQ */
1974 		isapnp_cfg_end();
1975 	} else {
1976 		snd_printk(KERN_ERR PFX "unable to install ISA PnP hack, expect malfunction\n");
1977 	}
1978 	port[dev] = pnp_port_start(pdev, 0);
1979 	fm_port[dev] = pnp_port_start(pdev, 1);
1980 	mpu_port[dev] = pnp_port_start(pdev, 2);
1981 	dma1[dev] = pnp_dma(pdev, 0);
1982 	dma2[dev] = pnp_dma(pdev, 1);
1983 	irq[dev] = pnp_irq(pdev, 0);
1984 	snd_printdd("PnP ES18xx: port=0x%lx, fm port=0x%lx, mpu port=0x%lx\n", port[dev], fm_port[dev], mpu_port[dev]);
1985 	snd_printdd("PnP ES18xx: dma1=%i, dma2=%i, irq=%i\n", dma1[dev], dma2[dev], irq[dev]);
1986 	kfree(cfg);
1987 	return 0;
1988 }
1989 #endif /* CONFIG_PNP */
1990 
1991 static int __devinit snd_audiodrive_probe(int dev, struct pnp_card_link *pcard,
1992 					  const struct pnp_card_device_id *pid)
1993 {
1994 	static int possible_irqs[] = {5, 9, 10, 7, 11, 12, -1};
1995 	static int possible_dmas[] = {1, 0, 3, 5, -1};
1996 	int xirq, xdma1, xdma2;
1997 	snd_card_t *card;
1998 	struct snd_audiodrive *acard;
1999 	snd_rawmidi_t *rmidi = NULL;
2000 	es18xx_t *chip;
2001 	opl3_t *opl3;
2002 	int err;
2003 
2004 	card = snd_card_new(index[dev], id[dev], THIS_MODULE,
2005 			    sizeof(struct snd_audiodrive));
2006 	if (card == NULL)
2007 		return -ENOMEM;
2008 	acard = (struct snd_audiodrive *)card->private_data;
2009 #ifdef CONFIG_PNP
2010 	if (isapnp[dev]) {
2011 		if ((err = snd_audiodrive_pnp(dev, acard, pcard, pid)) < 0) {
2012 			snd_card_free(card);
2013 			return err;
2014 		}
2015 		snd_card_set_dev(card, &pcard->card->dev);
2016 	}
2017 #endif
2018 
2019 	xirq = irq[dev];
2020 	if (xirq == SNDRV_AUTO_IRQ) {
2021 		if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
2022 			snd_card_free(card);
2023 			snd_printk("unable to find a free IRQ\n");
2024 			return -EBUSY;
2025 		}
2026 	}
2027 	xdma1 = dma1[dev];
2028         if (xdma1 == SNDRV_AUTO_DMA) {
2029                 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
2030                         snd_card_free(card);
2031                         snd_printk("unable to find a free DMA1\n");
2032                         return -EBUSY;
2033                 }
2034         }
2035 	xdma2 = dma2[dev];
2036         if (xdma2 == SNDRV_AUTO_DMA) {
2037                 if ((xdma2 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
2038                         snd_card_free(card);
2039                         snd_printk("unable to find a free DMA2\n");
2040                         return -EBUSY;
2041                 }
2042         }
2043 
2044 	if ((err = snd_es18xx_new_device(card,
2045 					 port[dev],
2046 					 mpu_port[dev],
2047 					 fm_port[dev],
2048 					 xirq, xdma1, xdma2,
2049 					 &chip)) < 0) {
2050 		snd_card_free(card);
2051 		return err;
2052 	}
2053 
2054 	sprintf(card->driver, "ES%x", chip->version);
2055 	sprintf(card->shortname, "ESS AudioDrive ES%x", chip->version);
2056 	if (xdma1 != xdma2)
2057 		sprintf(card->longname, "%s at 0x%lx, irq %d, dma1 %d, dma2 %d",
2058 			card->shortname,
2059 			chip->port,
2060 			xirq, xdma1, xdma2);
2061 	else
2062 		sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
2063 			card->shortname,
2064 			chip->port,
2065 			xirq, xdma1);
2066 
2067 	if ((err = snd_es18xx_pcm(chip, 0, NULL)) < 0) {
2068 		snd_card_free(card);
2069 		return err;
2070 	}
2071 	if ((err = snd_es18xx_mixer(chip)) < 0) {
2072 		snd_card_free(card);
2073 		return err;
2074 	}
2075 
2076 	if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
2077 		if (snd_opl3_create(card, chip->fm_port, chip->fm_port + 2, OPL3_HW_OPL3, 0, &opl3) < 0) {
2078 			snd_printk(KERN_ERR PFX "opl3 not detected at 0x%lx\n", chip->fm_port);
2079 		} else {
2080 			if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
2081 				snd_card_free(card);
2082 				return err;
2083 			}
2084 		}
2085 	}
2086 
2087 	if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
2088 		if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_ES18XX,
2089 					       chip->mpu_port, 0,
2090 					       xirq, 0,
2091 					       &rmidi)) < 0) {
2092 			snd_card_free(card);
2093 			return err;
2094 		}
2095 		chip->rmidi = rmidi;
2096 	}
2097 
2098 	/* Power Management */
2099 	snd_card_set_isa_pm_callback(card, snd_es18xx_suspend, snd_es18xx_resume, chip);
2100 
2101 	if ((err = snd_card_register(card)) < 0) {
2102 		snd_card_free(card);
2103 		return err;
2104 	}
2105 	if (pcard)
2106 		pnp_set_card_drvdata(pcard, card);
2107 	else
2108 		snd_audiodrive_legacy[dev] = card;
2109 	return 0;
2110 }
2111 
2112 static int __devinit snd_audiodrive_probe_legacy_port(unsigned long xport)
2113 {
2114 	static int dev;
2115 	int res;
2116 
2117 	for ( ; dev < SNDRV_CARDS; dev++) {
2118 		if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
2119 			continue;
2120 #ifdef CONFIG_PNP
2121 		if (isapnp[dev])
2122 			continue;
2123 #endif
2124 		port[dev] = xport;
2125 		res = snd_audiodrive_probe(dev, NULL, NULL);
2126 		if (res < 0)
2127 			port[dev] = SNDRV_AUTO_PORT;
2128 		return res;
2129 	}
2130 	return -ENODEV;
2131 }
2132 
2133 
2134 #ifdef CONFIG_PNP
2135 static int __devinit snd_audiodrive_pnp_detect(struct pnp_card_link *card,
2136 					       const struct pnp_card_device_id *id)
2137 {
2138 	static int dev;
2139 	int res;
2140 
2141 	for ( ; dev < SNDRV_CARDS; dev++) {
2142 		if (!enable[dev] || !isapnp[dev])
2143 			continue;
2144                 res = snd_audiodrive_probe(dev, card, id);
2145 		if (res < 0)
2146 			return res;
2147 		dev++;
2148 		return 0;
2149         }
2150 
2151         return -ENODEV;
2152 }
2153 
2154 static void __devexit snd_audiodrive_pnp_remove(struct pnp_card_link * pcard)
2155 {
2156 	snd_card_t *card = (snd_card_t *) pnp_get_card_drvdata(pcard);
2157 
2158 	snd_card_disconnect(card);
2159 	snd_card_free_in_thread(card);
2160 }
2161 
2162 static struct pnp_card_driver es18xx_pnpc_driver = {
2163 	.flags = PNP_DRIVER_RES_DISABLE,
2164 	.name = "es18xx",
2165 	.id_table = snd_audiodrive_pnpids,
2166 	.probe = snd_audiodrive_pnp_detect,
2167 	.remove = __devexit_p(snd_audiodrive_pnp_remove),
2168 };
2169 #endif /* CONFIG_PNP */
2170 
2171 static int __init alsa_card_es18xx_init(void)
2172 {
2173 	static unsigned long possible_ports[] = {0x220, 0x240, 0x260, 0x280, -1};
2174 	int dev, cards = 0, i;
2175 
2176 	/* legacy non-auto cards at first */
2177 	for (dev = 0; dev < SNDRV_CARDS; dev++) {
2178 		if (!enable[dev] || port[dev] == SNDRV_AUTO_PORT)
2179 			continue;
2180 #ifdef CONFIG_PNP
2181 		if (isapnp[dev])
2182 			continue;
2183 #endif
2184 		if (snd_audiodrive_probe(dev, NULL, NULL) >= 0)
2185 			cards++;
2186 	}
2187 	/* legacy auto configured cards */
2188 	i = snd_legacy_auto_probe(possible_ports, snd_audiodrive_probe_legacy_port);
2189 	if (i > 0)
2190 		cards += i;
2191 
2192 #ifdef CONFIG_PNP
2193 	/* ISA PnP cards at last */
2194 	i = pnp_register_card_driver(&es18xx_pnpc_driver);
2195 	if (i > 0)
2196 		cards += i;
2197 
2198 #endif
2199 	if(!cards) {
2200 #ifdef CONFIG_PNP
2201 		pnp_unregister_card_driver(&es18xx_pnpc_driver);
2202 #endif
2203 #ifdef MODULE
2204 		snd_printk(KERN_ERR "ESS AudioDrive ES18xx soundcard not found or device busy\n");
2205 #endif
2206 		return -ENODEV;
2207 	}
2208 	return 0;
2209 }
2210 
2211 static void __exit alsa_card_es18xx_exit(void)
2212 {
2213 	int idx;
2214 
2215 #ifdef CONFIG_PNP
2216 	/* PnP cards first */
2217 	pnp_unregister_card_driver(&es18xx_pnpc_driver);
2218 #endif
2219 	for(idx = 0; idx < SNDRV_CARDS; idx++)
2220 		snd_card_free(snd_audiodrive_legacy[idx]);
2221 }
2222 
2223 module_init(alsa_card_es18xx_init)
2224 module_exit(alsa_card_es18xx_exit)
2225