xref: /linux/sound/isa/es18xx.c (revision 9ce7677cfd7cd871adb457c80bea3b581b839641)
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(KERN_ERR "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(KERN_ERR "dsp_get_byte failed: 0x%lx = 0x%x!!!\n",
188 		   chip->port + 0x0A, inb(chip->port + 0x0A));
189         return -ENODEV;
190 }
191 
192 #undef REG_DEBUG
193 
194 static int snd_es18xx_write(es18xx_t *chip,
195 			    unsigned char reg, unsigned char data)
196 {
197 	unsigned long flags;
198 	int ret;
199 
200         spin_lock_irqsave(&chip->reg_lock, flags);
201 	ret = snd_es18xx_dsp_command(chip, reg);
202 	if (ret < 0)
203 		goto end;
204         ret = snd_es18xx_dsp_command(chip, data);
205  end:
206         spin_unlock_irqrestore(&chip->reg_lock, flags);
207 #ifdef REG_DEBUG
208 	snd_printk(KERN_DEBUG "Reg %02x set to %02x\n", reg, data);
209 #endif
210 	return ret;
211 }
212 
213 static int snd_es18xx_read(es18xx_t *chip, unsigned char reg)
214 {
215 	unsigned long flags;
216 	int ret, data;
217         spin_lock_irqsave(&chip->reg_lock, flags);
218 	ret = snd_es18xx_dsp_command(chip, 0xC0);
219 	if (ret < 0)
220 		goto end;
221         ret = snd_es18xx_dsp_command(chip, reg);
222 	if (ret < 0)
223 		goto end;
224 	data = snd_es18xx_dsp_get_byte(chip);
225 	ret = data;
226 #ifdef REG_DEBUG
227 	snd_printk(KERN_DEBUG "Reg %02x now is %02x (%d)\n", reg, data, ret);
228 #endif
229  end:
230         spin_unlock_irqrestore(&chip->reg_lock, flags);
231 	return ret;
232 }
233 
234 /* Return old value */
235 static int snd_es18xx_bits(es18xx_t *chip, unsigned char reg,
236 			   unsigned char mask, unsigned char val)
237 {
238         int ret;
239 	unsigned char old, new, oval;
240 	unsigned long flags;
241         spin_lock_irqsave(&chip->reg_lock, flags);
242         ret = snd_es18xx_dsp_command(chip, 0xC0);
243 	if (ret < 0)
244 		goto end;
245         ret = snd_es18xx_dsp_command(chip, reg);
246 	if (ret < 0)
247 		goto end;
248 	ret = snd_es18xx_dsp_get_byte(chip);
249 	if (ret < 0) {
250 		goto end;
251 	}
252 	old = ret;
253 	oval = old & mask;
254 	if (val != oval) {
255 		ret = snd_es18xx_dsp_command(chip, reg);
256 		if (ret < 0)
257 			goto end;
258 		new = (old & ~mask) | (val & mask);
259 		ret = snd_es18xx_dsp_command(chip, new);
260 		if (ret < 0)
261 			goto end;
262 #ifdef REG_DEBUG
263 		snd_printk(KERN_DEBUG "Reg %02x was %02x, set to %02x (%d)\n",
264 			   reg, old, new, ret);
265 #endif
266 	}
267 	ret = oval;
268  end:
269         spin_unlock_irqrestore(&chip->reg_lock, flags);
270 	return ret;
271 }
272 
273 static inline void snd_es18xx_mixer_write(es18xx_t *chip,
274 			    unsigned char reg, unsigned char data)
275 {
276 	unsigned long flags;
277         spin_lock_irqsave(&chip->mixer_lock, flags);
278         outb(reg, chip->port + 0x04);
279         outb(data, chip->port + 0x05);
280         spin_unlock_irqrestore(&chip->mixer_lock, flags);
281 #ifdef REG_DEBUG
282 	snd_printk(KERN_DEBUG "Mixer reg %02x set to %02x\n", reg, data);
283 #endif
284 }
285 
286 static inline int snd_es18xx_mixer_read(es18xx_t *chip, unsigned char reg)
287 {
288 	unsigned long flags;
289 	int data;
290         spin_lock_irqsave(&chip->mixer_lock, flags);
291         outb(reg, chip->port + 0x04);
292 	data = inb(chip->port + 0x05);
293         spin_unlock_irqrestore(&chip->mixer_lock, flags);
294 #ifdef REG_DEBUG
295 	snd_printk(KERN_DEBUG "Mixer reg %02x now is %02x\n", reg, data);
296 #endif
297         return data;
298 }
299 
300 /* Return old value */
301 static inline int snd_es18xx_mixer_bits(es18xx_t *chip, unsigned char reg,
302 					unsigned char mask, unsigned char val)
303 {
304 	unsigned char old, new, oval;
305 	unsigned long flags;
306         spin_lock_irqsave(&chip->mixer_lock, flags);
307         outb(reg, chip->port + 0x04);
308 	old = inb(chip->port + 0x05);
309 	oval = old & mask;
310 	if (val != oval) {
311 		new = (old & ~mask) | (val & mask);
312 		outb(new, chip->port + 0x05);
313 #ifdef REG_DEBUG
314 		snd_printk(KERN_DEBUG "Mixer reg %02x was %02x, set to %02x\n",
315 			   reg, old, new);
316 #endif
317 	}
318         spin_unlock_irqrestore(&chip->mixer_lock, flags);
319 	return oval;
320 }
321 
322 static inline int snd_es18xx_mixer_writable(es18xx_t *chip, unsigned char reg,
323 					    unsigned char mask)
324 {
325 	int old, expected, new;
326 	unsigned long flags;
327         spin_lock_irqsave(&chip->mixer_lock, flags);
328         outb(reg, chip->port + 0x04);
329 	old = inb(chip->port + 0x05);
330 	expected = old ^ mask;
331 	outb(expected, chip->port + 0x05);
332 	new = inb(chip->port + 0x05);
333         spin_unlock_irqrestore(&chip->mixer_lock, flags);
334 #ifdef REG_DEBUG
335 	snd_printk(KERN_DEBUG "Mixer reg %02x was %02x, set to %02x, now is %02x\n",
336 		   reg, old, expected, new);
337 #endif
338 	return expected == new;
339 }
340 
341 
342 static int snd_es18xx_reset(es18xx_t *chip)
343 {
344 	int i;
345         outb(0x03, chip->port + 0x06);
346         inb(chip->port + 0x06);
347         outb(0x00, chip->port + 0x06);
348         for(i = 0; i < MILLISECOND && !(inb(chip->port + 0x0E) & 0x80); i++);
349         if (inb(chip->port + 0x0A) != 0xAA)
350                 return -1;
351 	return 0;
352 }
353 
354 static int snd_es18xx_reset_fifo(es18xx_t *chip)
355 {
356         outb(0x02, chip->port + 0x06);
357         inb(chip->port + 0x06);
358         outb(0x00, chip->port + 0x06);
359 	return 0;
360 }
361 
362 static ratnum_t new_clocks[2] = {
363 	{
364 		.num = 793800,
365 		.den_min = 1,
366 		.den_max = 128,
367 		.den_step = 1,
368 	},
369 	{
370 		.num = 768000,
371 		.den_min = 1,
372 		.den_max = 128,
373 		.den_step = 1,
374 	}
375 };
376 
377 static snd_pcm_hw_constraint_ratnums_t new_hw_constraints_clocks = {
378 	.nrats = 2,
379 	.rats = new_clocks,
380 };
381 
382 static ratnum_t old_clocks[2] = {
383 	{
384 		.num = 795444,
385 		.den_min = 1,
386 		.den_max = 128,
387 		.den_step = 1,
388 	},
389 	{
390 		.num = 397722,
391 		.den_min = 1,
392 		.den_max = 128,
393 		.den_step = 1,
394 	}
395 };
396 
397 static snd_pcm_hw_constraint_ratnums_t old_hw_constraints_clocks  = {
398 	.nrats = 2,
399 	.rats = old_clocks,
400 };
401 
402 
403 static void snd_es18xx_rate_set(es18xx_t *chip,
404 				snd_pcm_substream_t *substream,
405 				int mode)
406 {
407 	unsigned int bits, div0;
408 	snd_pcm_runtime_t *runtime = substream->runtime;
409 	if (chip->caps & ES18XX_NEW_RATE) {
410 		if (runtime->rate_num == new_clocks[0].num)
411 			bits = 128 - runtime->rate_den;
412 		else
413 			bits = 256 - runtime->rate_den;
414 	} else {
415 		if (runtime->rate_num == old_clocks[0].num)
416 			bits = 256 - runtime->rate_den;
417 		else
418 			bits = 128 - runtime->rate_den;
419 	}
420 
421 	/* set filter register */
422 	div0 = 256 - 7160000*20/(8*82*runtime->rate);
423 
424 	if ((chip->caps & ES18XX_PCM2) && mode == DAC2) {
425 		snd_es18xx_mixer_write(chip, 0x70, bits);
426 		/*
427 		 * Comment from kernel oss driver:
428 		 * FKS: fascinating: 0x72 doesn't seem to work.
429 		 */
430 		snd_es18xx_write(chip, 0xA2, div0);
431 		snd_es18xx_mixer_write(chip, 0x72, div0);
432 	} else {
433 		snd_es18xx_write(chip, 0xA1, bits);
434 		snd_es18xx_write(chip, 0xA2, div0);
435 	}
436 }
437 
438 static int snd_es18xx_playback_hw_params(snd_pcm_substream_t * substream,
439 					 snd_pcm_hw_params_t * hw_params)
440 {
441 	es18xx_t *chip = snd_pcm_substream_chip(substream);
442 	int shift, err;
443 
444 	shift = 0;
445 	if (params_channels(hw_params) == 2)
446 		shift++;
447 	if (snd_pcm_format_width(params_format(hw_params)) == 16)
448 		shift++;
449 
450 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
451 		if ((chip->caps & ES18XX_DUPLEX_MONO) &&
452 		    (chip->capture_a_substream) &&
453 		    params_channels(hw_params) != 1) {
454 			_snd_pcm_hw_param_setempty(hw_params, SNDRV_PCM_HW_PARAM_CHANNELS);
455 			return -EBUSY;
456 		}
457 		chip->dma2_shift = shift;
458 	} else {
459 		chip->dma1_shift = shift;
460 	}
461 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
462 		return err;
463 	return 0;
464 }
465 
466 static int snd_es18xx_pcm_hw_free(snd_pcm_substream_t * substream)
467 {
468 	return snd_pcm_lib_free_pages(substream);
469 }
470 
471 static int snd_es18xx_playback1_prepare(es18xx_t *chip,
472 					snd_pcm_substream_t *substream)
473 {
474 	snd_pcm_runtime_t *runtime = substream->runtime;
475 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
476 	unsigned int count = snd_pcm_lib_period_bytes(substream);
477 
478 	chip->dma2_size = size;
479 
480         snd_es18xx_rate_set(chip, substream, DAC2);
481 
482         /* Transfer Count Reload */
483         count = 0x10000 - count;
484         snd_es18xx_mixer_write(chip, 0x74, count & 0xff);
485         snd_es18xx_mixer_write(chip, 0x76, count >> 8);
486 
487 	/* Set format */
488         snd_es18xx_mixer_bits(chip, 0x7A, 0x07,
489 			      ((runtime->channels == 1) ? 0x00 : 0x02) |
490 			      (snd_pcm_format_width(runtime->format) == 16 ? 0x01 : 0x00) |
491 			      (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x04));
492 
493         /* Set DMA controller */
494         snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
495 
496 	return 0;
497 }
498 
499 static int snd_es18xx_playback1_trigger(es18xx_t *chip,
500 					snd_pcm_substream_t * substream,
501 					int cmd)
502 {
503 	switch (cmd) {
504 	case SNDRV_PCM_TRIGGER_START:
505 	case SNDRV_PCM_TRIGGER_RESUME:
506 		if (chip->active & DAC2)
507 			return 0;
508 		chip->active |= DAC2;
509                 /* Start DMA */
510 		if (chip->dma2 >= 4)
511 			snd_es18xx_mixer_write(chip, 0x78, 0xb3);
512 		else
513 			snd_es18xx_mixer_write(chip, 0x78, 0x93);
514 #ifdef AVOID_POPS
515 		/* Avoid pops */
516                 udelay(100000);
517 		if (chip->caps & ES18XX_PCM2)
518 			/* Restore Audio 2 volume */
519 			snd_es18xx_mixer_write(chip, 0x7C, chip->audio2_vol);
520 		else
521 			/* Enable PCM output */
522 			snd_es18xx_dsp_command(chip, 0xD1);
523 #endif
524 		break;
525 	case SNDRV_PCM_TRIGGER_STOP:
526 	case SNDRV_PCM_TRIGGER_SUSPEND:
527 		if (!(chip->active & DAC2))
528 			return 0;
529 		chip->active &= ~DAC2;
530                 /* Stop DMA */
531                 snd_es18xx_mixer_write(chip, 0x78, 0x00);
532 #ifdef AVOID_POPS
533                 udelay(25000);
534 		if (chip->caps & ES18XX_PCM2)
535 			/* Set Audio 2 volume to 0 */
536 			snd_es18xx_mixer_write(chip, 0x7C, 0);
537 		else
538 			/* Disable PCM output */
539 			snd_es18xx_dsp_command(chip, 0xD3);
540 #endif
541 		break;
542 	default:
543 		return -EINVAL;
544 	}
545 
546 	return 0;
547 }
548 
549 static int snd_es18xx_capture_hw_params(snd_pcm_substream_t * substream,
550 					snd_pcm_hw_params_t * hw_params)
551 {
552 	es18xx_t *chip = snd_pcm_substream_chip(substream);
553 	int shift, err;
554 
555 	shift = 0;
556 	if ((chip->caps & ES18XX_DUPLEX_MONO) &&
557 	    chip->playback_a_substream &&
558 	    params_channels(hw_params) != 1) {
559 		_snd_pcm_hw_param_setempty(hw_params, SNDRV_PCM_HW_PARAM_CHANNELS);
560 		return -EBUSY;
561 	}
562 	if (params_channels(hw_params) == 2)
563 		shift++;
564 	if (snd_pcm_format_width(params_format(hw_params)) == 16)
565 		shift++;
566 	chip->dma1_shift = shift;
567 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
568 		return err;
569 	return 0;
570 }
571 
572 static int snd_es18xx_capture_prepare(snd_pcm_substream_t *substream)
573 {
574         es18xx_t *chip = snd_pcm_substream_chip(substream);
575 	snd_pcm_runtime_t *runtime = substream->runtime;
576 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
577 	unsigned int count = snd_pcm_lib_period_bytes(substream);
578 
579 	chip->dma1_size = size;
580 
581 	snd_es18xx_reset_fifo(chip);
582 
583         /* Set stereo/mono */
584         snd_es18xx_bits(chip, 0xA8, 0x03, runtime->channels == 1 ? 0x02 : 0x01);
585 
586         snd_es18xx_rate_set(chip, substream, ADC1);
587 
588         /* Transfer Count Reload */
589 	count = 0x10000 - count;
590 	snd_es18xx_write(chip, 0xA4, count & 0xff);
591 	snd_es18xx_write(chip, 0xA5, count >> 8);
592 
593 #ifdef AVOID_POPS
594 	udelay(100000);
595 #endif
596 
597         /* Set format */
598         snd_es18xx_write(chip, 0xB7,
599                          snd_pcm_format_unsigned(runtime->format) ? 0x51 : 0x71);
600         snd_es18xx_write(chip, 0xB7, 0x90 |
601                          ((runtime->channels == 1) ? 0x40 : 0x08) |
602                          (snd_pcm_format_width(runtime->format) == 16 ? 0x04 : 0x00) |
603                          (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x20));
604 
605         /* Set DMA controler */
606         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
607 
608 	return 0;
609 }
610 
611 static int snd_es18xx_capture_trigger(snd_pcm_substream_t *substream,
612 				      int cmd)
613 {
614         es18xx_t *chip = snd_pcm_substream_chip(substream);
615 
616 	switch (cmd) {
617 	case SNDRV_PCM_TRIGGER_START:
618 	case SNDRV_PCM_TRIGGER_RESUME:
619 		if (chip->active & ADC1)
620 			return 0;
621 		chip->active |= ADC1;
622                 /* Start DMA */
623                 snd_es18xx_write(chip, 0xB8, 0x0f);
624 		break;
625 	case SNDRV_PCM_TRIGGER_STOP:
626 	case SNDRV_PCM_TRIGGER_SUSPEND:
627 		if (!(chip->active & ADC1))
628 			return 0;
629 		chip->active &= ~ADC1;
630                 /* Stop DMA */
631                 snd_es18xx_write(chip, 0xB8, 0x00);
632 		break;
633 	default:
634 		return -EINVAL;
635 	}
636 
637 	return 0;
638 }
639 
640 static int snd_es18xx_playback2_prepare(es18xx_t *chip,
641 					snd_pcm_substream_t *substream)
642 {
643 	snd_pcm_runtime_t *runtime = substream->runtime;
644 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
645 	unsigned int count = snd_pcm_lib_period_bytes(substream);
646 
647 	chip->dma1_size = size;
648 
649 	snd_es18xx_reset_fifo(chip);
650 
651         /* Set stereo/mono */
652         snd_es18xx_bits(chip, 0xA8, 0x03, runtime->channels == 1 ? 0x02 : 0x01);
653 
654         snd_es18xx_rate_set(chip, substream, DAC1);
655 
656         /* Transfer Count Reload */
657 	count = 0x10000 - count;
658 	snd_es18xx_write(chip, 0xA4, count & 0xff);
659 	snd_es18xx_write(chip, 0xA5, count >> 8);
660 
661         /* Set format */
662         snd_es18xx_write(chip, 0xB6,
663                          snd_pcm_format_unsigned(runtime->format) ? 0x80 : 0x00);
664         snd_es18xx_write(chip, 0xB7,
665                          snd_pcm_format_unsigned(runtime->format) ? 0x51 : 0x71);
666         snd_es18xx_write(chip, 0xB7, 0x90 |
667                          (runtime->channels == 1 ? 0x40 : 0x08) |
668                          (snd_pcm_format_width(runtime->format) == 16 ? 0x04 : 0x00) |
669                          (snd_pcm_format_unsigned(runtime->format) ? 0x00 : 0x20));
670 
671         /* Set DMA controler */
672         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
673 
674 	return 0;
675 }
676 
677 static int snd_es18xx_playback2_trigger(es18xx_t *chip,
678 					snd_pcm_substream_t *substream,
679 					int cmd)
680 {
681 	switch (cmd) {
682 	case SNDRV_PCM_TRIGGER_START:
683 	case SNDRV_PCM_TRIGGER_RESUME:
684 		if (chip->active & DAC1)
685 			return 0;
686 		chip->active |= DAC1;
687                 /* Start DMA */
688                 snd_es18xx_write(chip, 0xB8, 0x05);
689 #ifdef AVOID_POPS
690 		/* Avoid pops */
691                 udelay(100000);
692                 /* Enable Audio 1 */
693                 snd_es18xx_dsp_command(chip, 0xD1);
694 #endif
695 		break;
696 	case SNDRV_PCM_TRIGGER_STOP:
697 	case SNDRV_PCM_TRIGGER_SUSPEND:
698 		if (!(chip->active & DAC1))
699 			return 0;
700 		chip->active &= ~DAC1;
701                 /* Stop DMA */
702                 snd_es18xx_write(chip, 0xB8, 0x00);
703 #ifdef AVOID_POPS
704 		/* Avoid pops */
705                 udelay(25000);
706                 /* Disable Audio 1 */
707                 snd_es18xx_dsp_command(chip, 0xD3);
708 #endif
709 		break;
710 	default:
711 		return -EINVAL;
712 	}
713 
714 	return 0;
715 }
716 
717 static int snd_es18xx_playback_prepare(snd_pcm_substream_t *substream)
718 {
719         es18xx_t *chip = snd_pcm_substream_chip(substream);
720 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
721 		return snd_es18xx_playback1_prepare(chip, substream);
722 	else
723 		return snd_es18xx_playback2_prepare(chip, substream);
724 }
725 
726 static int snd_es18xx_playback_trigger(snd_pcm_substream_t *substream,
727 				       int cmd)
728 {
729         es18xx_t *chip = snd_pcm_substream_chip(substream);
730 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
731 		return snd_es18xx_playback1_trigger(chip, substream, cmd);
732 	else
733 		return snd_es18xx_playback2_trigger(chip, substream, cmd);
734 }
735 
736 static irqreturn_t snd_es18xx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
737 {
738 	es18xx_t *chip = dev_id;
739 	unsigned char status;
740 
741 	if (chip->caps & ES18XX_CONTROL) {
742 		/* Read Interrupt status */
743 		status = inb(chip->ctrl_port + 6);
744 	} else {
745 		/* Read Interrupt status */
746 		status = snd_es18xx_mixer_read(chip, 0x7f) >> 4;
747 	}
748 #if 0
749 	else {
750 		status = 0;
751 		if (inb(chip->port + 0x0C) & 0x01)
752 			status |= AUDIO1_IRQ;
753 		if (snd_es18xx_mixer_read(chip, 0x7A) & 0x80)
754 			status |= AUDIO2_IRQ;
755 		if ((chip->caps & ES18XX_HWV) &&
756 		    snd_es18xx_mixer_read(chip, 0x64) & 0x10)
757 			status |= HWV_IRQ;
758 	}
759 #endif
760 
761 	/* Audio 1 & Audio 2 */
762         if (status & AUDIO2_IRQ) {
763                 if (chip->active & DAC2)
764                 	snd_pcm_period_elapsed(chip->playback_a_substream);
765 		/* ack interrupt */
766                 snd_es18xx_mixer_bits(chip, 0x7A, 0x80, 0x00);
767         }
768         if (status & AUDIO1_IRQ) {
769                 /* ok.. capture is active */
770                 if (chip->active & ADC1)
771                 	snd_pcm_period_elapsed(chip->capture_a_substream);
772                 /* ok.. playback2 is active */
773                 else if (chip->active & DAC1)
774                 	snd_pcm_period_elapsed(chip->playback_b_substream);
775 		/* ack interrupt */
776 		inb(chip->port + 0x0E);
777         }
778 
779 	/* MPU */
780 	if ((status & MPU_IRQ) && chip->rmidi)
781 		snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
782 
783 	/* Hardware volume */
784 	if (status & HWV_IRQ) {
785 		int split = snd_es18xx_mixer_read(chip, 0x64) & 0x80;
786 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
787 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
788 		if (!split) {
789 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->master_switch->id);
790 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->master_volume->id);
791 		}
792 		/* ack interrupt */
793 		snd_es18xx_mixer_write(chip, 0x66, 0x00);
794 	}
795 	return IRQ_HANDLED;
796 }
797 
798 static snd_pcm_uframes_t snd_es18xx_playback_pointer(snd_pcm_substream_t * substream)
799 {
800         es18xx_t *chip = snd_pcm_substream_chip(substream);
801 	int pos;
802 
803 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
804 		if (!(chip->active & DAC2))
805 			return 0;
806 		pos = snd_dma_pointer(chip->dma2, chip->dma2_size);
807 		return pos >> chip->dma2_shift;
808 	} else {
809 		if (!(chip->active & DAC1))
810 			return 0;
811 		pos = snd_dma_pointer(chip->dma1, chip->dma1_size);
812 		return pos >> chip->dma1_shift;
813 	}
814 }
815 
816 static snd_pcm_uframes_t snd_es18xx_capture_pointer(snd_pcm_substream_t * substream)
817 {
818         es18xx_t *chip = snd_pcm_substream_chip(substream);
819 	int pos;
820 
821         if (!(chip->active & ADC1))
822                 return 0;
823 	pos = snd_dma_pointer(chip->dma1, chip->dma1_size);
824 	return pos >> chip->dma1_shift;
825 }
826 
827 static snd_pcm_hardware_t snd_es18xx_playback =
828 {
829 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
830 				 SNDRV_PCM_INFO_RESUME |
831 				 SNDRV_PCM_INFO_MMAP_VALID),
832 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
833 				 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
834 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
835 	.rate_min =		4000,
836 	.rate_max =		48000,
837 	.channels_min =		1,
838 	.channels_max =		2,
839 	.buffer_bytes_max =	65536,
840 	.period_bytes_min =	64,
841 	.period_bytes_max =	65536,
842 	.periods_min =		1,
843 	.periods_max =		1024,
844 	.fifo_size =		0,
845 };
846 
847 static snd_pcm_hardware_t snd_es18xx_capture =
848 {
849 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
850 				 SNDRV_PCM_INFO_RESUME |
851 				 SNDRV_PCM_INFO_MMAP_VALID),
852 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
853 				 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
854 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
855 	.rate_min =		4000,
856 	.rate_max =		48000,
857 	.channels_min =		1,
858 	.channels_max =		2,
859 	.buffer_bytes_max =	65536,
860 	.period_bytes_min =	64,
861 	.period_bytes_max =	65536,
862 	.periods_min =		1,
863 	.periods_max =		1024,
864 	.fifo_size =		0,
865 };
866 
867 static int snd_es18xx_playback_open(snd_pcm_substream_t * substream)
868 {
869 	snd_pcm_runtime_t *runtime = substream->runtime;
870         es18xx_t *chip = snd_pcm_substream_chip(substream);
871 
872 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2)) {
873 		if ((chip->caps & ES18XX_DUPLEX_MONO) &&
874 		    chip->capture_a_substream &&
875 		    chip->capture_a_substream->runtime->channels != 1)
876 			return -EAGAIN;
877 		chip->playback_a_substream = substream;
878 	} else if (substream->number <= 1) {
879 		if (chip->capture_a_substream)
880 			return -EAGAIN;
881 		chip->playback_b_substream = substream;
882 	} else {
883 		snd_BUG();
884 		return -EINVAL;
885 	}
886 	substream->runtime->hw = snd_es18xx_playback;
887 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
888 				      (chip->caps & ES18XX_NEW_RATE) ? &new_hw_constraints_clocks : &old_hw_constraints_clocks);
889         return 0;
890 }
891 
892 static int snd_es18xx_capture_open(snd_pcm_substream_t * substream)
893 {
894 	snd_pcm_runtime_t *runtime = substream->runtime;
895         es18xx_t *chip = snd_pcm_substream_chip(substream);
896 
897         if (chip->playback_b_substream)
898                 return -EAGAIN;
899 	if ((chip->caps & ES18XX_DUPLEX_MONO) &&
900 	    chip->playback_a_substream &&
901 	    chip->playback_a_substream->runtime->channels != 1)
902 		return -EAGAIN;
903         chip->capture_a_substream = substream;
904 	substream->runtime->hw = snd_es18xx_capture;
905 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
906 				      (chip->caps & ES18XX_NEW_RATE) ? &new_hw_constraints_clocks : &old_hw_constraints_clocks);
907         return 0;
908 }
909 
910 static int snd_es18xx_playback_close(snd_pcm_substream_t * substream)
911 {
912         es18xx_t *chip = snd_pcm_substream_chip(substream);
913 
914 	if (substream->number == 0 && (chip->caps & ES18XX_PCM2))
915 		chip->playback_a_substream = NULL;
916 	else
917 		chip->playback_b_substream = NULL;
918 
919 	snd_pcm_lib_free_pages(substream);
920 	return 0;
921 }
922 
923 static int snd_es18xx_capture_close(snd_pcm_substream_t * substream)
924 {
925         es18xx_t *chip = snd_pcm_substream_chip(substream);
926 
927         chip->capture_a_substream = NULL;
928 	snd_pcm_lib_free_pages(substream);
929         return 0;
930 }
931 
932 /*
933  *  MIXER part
934  */
935 
936 static int snd_es18xx_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
937 {
938 	static char *texts[8] = {
939 		"Mic", "Mic Master", "CD", "AOUT",
940 		"Mic1", "Mix", "Line", "Master"
941 	};
942 
943 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
944 	uinfo->count = 1;
945 	uinfo->value.enumerated.items = 8;
946 	if (uinfo->value.enumerated.item > 7)
947 		uinfo->value.enumerated.item = 7;
948 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
949 	return 0;
950 }
951 
952 static int snd_es18xx_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
953 {
954 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
955 	ucontrol->value.enumerated.item[0] = snd_es18xx_mixer_read(chip, 0x1c) & 0x07;
956 	return 0;
957 }
958 
959 static int snd_es18xx_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
960 {
961 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
962 	unsigned char val = ucontrol->value.enumerated.item[0];
963 
964 	if (val > 7)
965 		return -EINVAL;
966 	return snd_es18xx_mixer_bits(chip, 0x1c, 0x07, val) != val;
967 }
968 
969 static int snd_es18xx_info_spatializer_enable(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
970 {
971 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
972 	uinfo->count = 1;
973 	uinfo->value.integer.min = 0;
974 	uinfo->value.integer.max = 1;
975 	return 0;
976 }
977 
978 static int snd_es18xx_get_spatializer_enable(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
979 {
980 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
981 	unsigned char val = snd_es18xx_mixer_read(chip, 0x50);
982 	ucontrol->value.integer.value[0] = !!(val & 8);
983 	return 0;
984 }
985 
986 static int snd_es18xx_put_spatializer_enable(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
987 {
988 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
989 	unsigned char oval, nval;
990 	int change;
991 	nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
992 	oval = snd_es18xx_mixer_read(chip, 0x50) & 0x0c;
993 	change = nval != oval;
994 	if (change) {
995 		snd_es18xx_mixer_write(chip, 0x50, nval & ~0x04);
996 		snd_es18xx_mixer_write(chip, 0x50, nval);
997 	}
998 	return change;
999 }
1000 
1001 static int snd_es18xx_info_hw_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1002 {
1003 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1004 	uinfo->count = 2;
1005 	uinfo->value.integer.min = 0;
1006 	uinfo->value.integer.max = 63;
1007 	return 0;
1008 }
1009 
1010 static int snd_es18xx_get_hw_volume(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1011 {
1012 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1013 	ucontrol->value.integer.value[0] = snd_es18xx_mixer_read(chip, 0x61) & 0x3f;
1014 	ucontrol->value.integer.value[1] = snd_es18xx_mixer_read(chip, 0x63) & 0x3f;
1015 	return 0;
1016 }
1017 
1018 static int snd_es18xx_info_hw_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1019 {
1020 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1021 	uinfo->count = 2;
1022 	uinfo->value.integer.min = 0;
1023 	uinfo->value.integer.max = 1;
1024 	return 0;
1025 }
1026 
1027 static int snd_es18xx_get_hw_switch(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1028 {
1029 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1030 	ucontrol->value.integer.value[0] = !(snd_es18xx_mixer_read(chip, 0x61) & 0x40);
1031 	ucontrol->value.integer.value[1] = !(snd_es18xx_mixer_read(chip, 0x63) & 0x40);
1032 	return 0;
1033 }
1034 
1035 static void snd_es18xx_hwv_free(snd_kcontrol_t *kcontrol)
1036 {
1037 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1038 	chip->master_volume = NULL;
1039 	chip->master_switch = NULL;
1040 	chip->hw_volume = NULL;
1041 	chip->hw_switch = NULL;
1042 }
1043 
1044 static int snd_es18xx_reg_bits(es18xx_t *chip, unsigned char reg,
1045 			       unsigned char mask, unsigned char val)
1046 {
1047 	if (reg < 0xa0)
1048 		return snd_es18xx_mixer_bits(chip, reg, mask, val);
1049 	else
1050 		return snd_es18xx_bits(chip, reg, mask, val);
1051 }
1052 
1053 static int snd_es18xx_reg_read(es18xx_t *chip, unsigned char reg)
1054 {
1055 	if (reg < 0xa0)
1056 		return snd_es18xx_mixer_read(chip, reg);
1057 	else
1058 		return snd_es18xx_read(chip, reg);
1059 }
1060 
1061 #define ES18XX_SINGLE(xname, xindex, reg, shift, mask, invert) \
1062 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1063   .info = snd_es18xx_info_single, \
1064   .get = snd_es18xx_get_single, .put = snd_es18xx_put_single, \
1065   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1066 
1067 static int snd_es18xx_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1068 {
1069 	int mask = (kcontrol->private_value >> 16) & 0xff;
1070 
1071 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1072 	uinfo->count = 1;
1073 	uinfo->value.integer.min = 0;
1074 	uinfo->value.integer.max = mask;
1075 	return 0;
1076 }
1077 
1078 static int snd_es18xx_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1079 {
1080 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1081 	int reg = kcontrol->private_value & 0xff;
1082 	int shift = (kcontrol->private_value >> 8) & 0xff;
1083 	int mask = (kcontrol->private_value >> 16) & 0xff;
1084 	int invert = (kcontrol->private_value >> 24) & 0xff;
1085 	int val;
1086 
1087 	val = snd_es18xx_reg_read(chip, reg);
1088 	ucontrol->value.integer.value[0] = (val >> shift) & mask;
1089 	if (invert)
1090 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1091 	return 0;
1092 }
1093 
1094 static int snd_es18xx_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1095 {
1096 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1097 	int reg = kcontrol->private_value & 0xff;
1098 	int shift = (kcontrol->private_value >> 8) & 0xff;
1099 	int mask = (kcontrol->private_value >> 16) & 0xff;
1100 	int invert = (kcontrol->private_value >> 24) & 0xff;
1101 	unsigned char val;
1102 
1103 	val = (ucontrol->value.integer.value[0] & mask);
1104 	if (invert)
1105 		val = mask - val;
1106 	mask <<= shift;
1107 	val <<= shift;
1108 	return snd_es18xx_reg_bits(chip, reg, mask, val) != val;
1109 }
1110 
1111 #define ES18XX_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1112 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1113   .info = snd_es18xx_info_double, \
1114   .get = snd_es18xx_get_double, .put = snd_es18xx_put_double, \
1115   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1116 
1117 static int snd_es18xx_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1118 {
1119 	int mask = (kcontrol->private_value >> 24) & 0xff;
1120 
1121 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1122 	uinfo->count = 2;
1123 	uinfo->value.integer.min = 0;
1124 	uinfo->value.integer.max = mask;
1125 	return 0;
1126 }
1127 
1128 static int snd_es18xx_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1129 {
1130 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1131 	int left_reg = kcontrol->private_value & 0xff;
1132 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1133 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1134 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1135 	int mask = (kcontrol->private_value >> 24) & 0xff;
1136 	int invert = (kcontrol->private_value >> 22) & 1;
1137 	unsigned char left, right;
1138 
1139 	left = snd_es18xx_reg_read(chip, left_reg);
1140 	if (left_reg != right_reg)
1141 		right = snd_es18xx_reg_read(chip, right_reg);
1142 	else
1143 		right = left;
1144 	ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1145 	ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1146 	if (invert) {
1147 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1148 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1149 	}
1150 	return 0;
1151 }
1152 
1153 static int snd_es18xx_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1154 {
1155 	es18xx_t *chip = snd_kcontrol_chip(kcontrol);
1156 	int left_reg = kcontrol->private_value & 0xff;
1157 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1158 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1159 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1160 	int mask = (kcontrol->private_value >> 24) & 0xff;
1161 	int invert = (kcontrol->private_value >> 22) & 1;
1162 	int change;
1163 	unsigned char val1, val2, mask1, mask2;
1164 
1165 	val1 = ucontrol->value.integer.value[0] & mask;
1166 	val2 = ucontrol->value.integer.value[1] & mask;
1167 	if (invert) {
1168 		val1 = mask - val1;
1169 		val2 = mask - val2;
1170 	}
1171 	val1 <<= shift_left;
1172 	val2 <<= shift_right;
1173 	mask1 = mask << shift_left;
1174 	mask2 = mask << shift_right;
1175 	if (left_reg != right_reg) {
1176 		change = 0;
1177 		if (snd_es18xx_reg_bits(chip, left_reg, mask1, val1) != val1)
1178 			change = 1;
1179 		if (snd_es18xx_reg_bits(chip, right_reg, mask2, val2) != val2)
1180 			change = 1;
1181 	} else {
1182 		change = (snd_es18xx_reg_bits(chip, left_reg, mask1 | mask2,
1183 					      val1 | val2) != (val1 | val2));
1184 	}
1185 	return change;
1186 }
1187 
1188 static snd_kcontrol_new_t snd_es18xx_base_controls[] = {
1189 ES18XX_DOUBLE("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0),
1190 ES18XX_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1191 ES18XX_DOUBLE("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0),
1192 ES18XX_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1193 ES18XX_DOUBLE("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0),
1194 ES18XX_DOUBLE("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
1195 ES18XX_DOUBLE("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0),
1196 ES18XX_DOUBLE("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0),
1197 ES18XX_SINGLE("PC Speaker Playback Volume", 0, 0x3c, 0, 7, 0),
1198 ES18XX_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1199 ES18XX_DOUBLE("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0),
1200 ES18XX_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1201 {
1202 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1203 	.name = "Capture Source",
1204 	.info = snd_es18xx_info_mux,
1205 	.get = snd_es18xx_get_mux,
1206 	.put = snd_es18xx_put_mux,
1207 }
1208 };
1209 
1210 static snd_kcontrol_new_t snd_es18xx_mono_in_control =
1211 ES18XX_DOUBLE("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0);
1212 
1213 static snd_kcontrol_new_t snd_es18xx_recmix_controls[] = {
1214 ES18XX_DOUBLE("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0),
1215 ES18XX_DOUBLE("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0),
1216 ES18XX_DOUBLE("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0),
1217 ES18XX_DOUBLE("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0),
1218 ES18XX_DOUBLE("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0),
1219 ES18XX_DOUBLE("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0),
1220 ES18XX_DOUBLE("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0)
1221 };
1222 
1223 static snd_kcontrol_new_t snd_es18xx_pcm1_controls[] = {
1224 ES18XX_DOUBLE("PCM Playback Volume", 0, 0x14, 0x14, 4, 0, 15, 0),
1225 };
1226 
1227 static snd_kcontrol_new_t snd_es18xx_pcm2_controls[] = {
1228 ES18XX_DOUBLE("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0),
1229 ES18XX_DOUBLE("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0)
1230 };
1231 
1232 static snd_kcontrol_new_t snd_es18xx_spatializer_controls[] = {
1233 ES18XX_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1234 {
1235 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1236 	.name = "3D Control - Switch",
1237 	.info = snd_es18xx_info_spatializer_enable,
1238 	.get = snd_es18xx_get_spatializer_enable,
1239 	.put = snd_es18xx_put_spatializer_enable,
1240 }
1241 };
1242 
1243 static snd_kcontrol_new_t snd_es18xx_micpre1_control =
1244 ES18XX_SINGLE("Mic Boost (+26dB)", 0, 0xa9, 2, 1, 0);
1245 
1246 static snd_kcontrol_new_t snd_es18xx_micpre2_control =
1247 ES18XX_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0);
1248 
1249 static snd_kcontrol_new_t snd_es18xx_hw_volume_controls[] = {
1250 {
1251 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1252 	.name = "Hardware Master Playback Volume",
1253 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1254 	.info = snd_es18xx_info_hw_volume,
1255 	.get = snd_es18xx_get_hw_volume,
1256 },
1257 {
1258 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1259 	.name = "Hardware Master Playback Switch",
1260 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1261 	.info = snd_es18xx_info_hw_switch,
1262 	.get = snd_es18xx_get_hw_switch,
1263 },
1264 ES18XX_SINGLE("Hardware Master Volume Split", 0, 0x64, 7, 1, 0),
1265 };
1266 
1267 #if 0
1268 static int __devinit snd_es18xx_config_read(es18xx_t *chip, unsigned char reg)
1269 {
1270 	int data;
1271 	unsigned long flags;
1272         spin_lock_irqsave(&chip->ctrl_lock, flags);
1273 	outb(reg, chip->ctrl_port);
1274 	data = inb(chip->ctrl_port + 1);
1275         spin_unlock_irqrestore(&chip->ctrl_lock, flags);
1276 	return data;
1277 }
1278 #endif
1279 
1280 static void __devinit snd_es18xx_config_write(es18xx_t *chip,
1281 					      unsigned char reg, unsigned char data)
1282 {
1283 	/* No need for spinlocks, this function is used only in
1284 	   otherwise protected init code */
1285 	outb(reg, chip->ctrl_port);
1286 	outb(data, chip->ctrl_port + 1);
1287 #ifdef REG_DEBUG
1288 	snd_printk(KERN_DEBUG "Config reg %02x set to %02x\n", reg, data);
1289 #endif
1290 }
1291 
1292 static int __devinit snd_es18xx_initialize(es18xx_t *chip)
1293 {
1294 	int mask = 0;
1295 
1296         /* enable extended mode */
1297         snd_es18xx_dsp_command(chip, 0xC6);
1298 	/* Reset mixer registers */
1299 	snd_es18xx_mixer_write(chip, 0x00, 0x00);
1300 
1301         /* Audio 1 DMA demand mode (4 bytes/request) */
1302         snd_es18xx_write(chip, 0xB9, 2);
1303 	if (chip->caps & ES18XX_CONTROL) {
1304 		/* Hardware volume IRQ */
1305 		snd_es18xx_config_write(chip, 0x27, chip->irq);
1306 		if (chip->fm_port > 0 && chip->fm_port != SNDRV_AUTO_PORT) {
1307 			/* FM I/O */
1308 			snd_es18xx_config_write(chip, 0x62, chip->fm_port >> 8);
1309 			snd_es18xx_config_write(chip, 0x63, chip->fm_port & 0xff);
1310 		}
1311 		if (chip->mpu_port > 0 && chip->mpu_port != SNDRV_AUTO_PORT) {
1312 			/* MPU-401 I/O */
1313 			snd_es18xx_config_write(chip, 0x64, chip->mpu_port >> 8);
1314 			snd_es18xx_config_write(chip, 0x65, chip->mpu_port & 0xff);
1315 			/* MPU-401 IRQ */
1316 			snd_es18xx_config_write(chip, 0x28, chip->irq);
1317 		}
1318 		/* Audio1 IRQ */
1319 		snd_es18xx_config_write(chip, 0x70, chip->irq);
1320 		/* Audio2 IRQ */
1321 		snd_es18xx_config_write(chip, 0x72, chip->irq);
1322 		/* Audio1 DMA */
1323 		snd_es18xx_config_write(chip, 0x74, chip->dma1);
1324 		/* Audio2 DMA */
1325 		snd_es18xx_config_write(chip, 0x75, chip->dma2);
1326 
1327 		/* Enable Audio 1 IRQ */
1328 		snd_es18xx_write(chip, 0xB1, 0x50);
1329 		/* Enable Audio 2 IRQ */
1330 		snd_es18xx_mixer_write(chip, 0x7A, 0x40);
1331 		/* Enable Audio 1 DMA */
1332 		snd_es18xx_write(chip, 0xB2, 0x50);
1333 		/* Enable MPU and hardware volume interrupt */
1334 		snd_es18xx_mixer_write(chip, 0x64, 0x42);
1335 	}
1336 	else {
1337 		int irqmask, dma1mask, dma2mask;
1338 		switch (chip->irq) {
1339 		case 2:
1340 		case 9:
1341 			irqmask = 0;
1342 			break;
1343 		case 5:
1344 			irqmask = 1;
1345 			break;
1346 		case 7:
1347 			irqmask = 2;
1348 			break;
1349 		case 10:
1350 			irqmask = 3;
1351 			break;
1352 		default:
1353 			snd_printk(KERN_ERR "invalid irq %d\n", chip->irq);
1354 			return -ENODEV;
1355 		}
1356 		switch (chip->dma1) {
1357 		case 0:
1358 			dma1mask = 1;
1359 			break;
1360 		case 1:
1361 			dma1mask = 2;
1362 			break;
1363 		case 3:
1364 			dma1mask = 3;
1365 			break;
1366 		default:
1367 			snd_printk(KERN_ERR "invalid dma1 %d\n", chip->dma1);
1368 			return -ENODEV;
1369 		}
1370 		switch (chip->dma2) {
1371 		case 0:
1372 			dma2mask = 0;
1373 			break;
1374 		case 1:
1375 			dma2mask = 1;
1376 			break;
1377 		case 3:
1378 			dma2mask = 2;
1379 			break;
1380 		case 5:
1381 			dma2mask = 3;
1382 			break;
1383 		default:
1384 			snd_printk(KERN_ERR "invalid dma2 %d\n", chip->dma2);
1385 			return -ENODEV;
1386 		}
1387 
1388 		/* Enable and set Audio 1 IRQ */
1389 		snd_es18xx_write(chip, 0xB1, 0x50 | (irqmask << 2));
1390 		/* Enable and set Audio 1 DMA */
1391 		snd_es18xx_write(chip, 0xB2, 0x50 | (dma1mask << 2));
1392 		/* Set Audio 2 DMA */
1393 		snd_es18xx_mixer_bits(chip, 0x7d, 0x07, 0x04 | dma2mask);
1394 		/* Enable Audio 2 IRQ and DMA
1395 		   Set capture mixer input */
1396 		snd_es18xx_mixer_write(chip, 0x7A, 0x68);
1397 		/* Enable and set hardware volume interrupt */
1398 		snd_es18xx_mixer_write(chip, 0x64, 0x06);
1399 		if (chip->mpu_port > 0 && chip->mpu_port != SNDRV_AUTO_PORT) {
1400 			/* MPU401 share irq with audio
1401 			   Joystick enabled
1402 			   FM enabled */
1403 			snd_es18xx_mixer_write(chip, 0x40, 0x43 | (chip->mpu_port & 0xf0) >> 1);
1404 		}
1405 		snd_es18xx_mixer_write(chip, 0x7f, ((irqmask + 1) << 1) | 0x01);
1406 	}
1407 	if (chip->caps & ES18XX_NEW_RATE) {
1408 		/* Change behaviour of register A1
1409 		   4x oversampling
1410 		   2nd channel DAC asynchronous */
1411 		snd_es18xx_mixer_write(chip, 0x71, 0x32);
1412 	}
1413 	if (!(chip->caps & ES18XX_PCM2)) {
1414 		/* Enable DMA FIFO */
1415 		snd_es18xx_write(chip, 0xB7, 0x80);
1416 	}
1417 	if (chip->caps & ES18XX_SPATIALIZER) {
1418 		/* Set spatializer parameters to recommended values */
1419 		snd_es18xx_mixer_write(chip, 0x54, 0x8f);
1420 		snd_es18xx_mixer_write(chip, 0x56, 0x95);
1421 		snd_es18xx_mixer_write(chip, 0x58, 0x94);
1422 		snd_es18xx_mixer_write(chip, 0x5a, 0x80);
1423 	}
1424 	/* Mute input source */
1425 	if (chip->caps & ES18XX_MUTEREC)
1426 		mask = 0x10;
1427 	if (chip->caps & ES18XX_RECMIX)
1428 		snd_es18xx_mixer_write(chip, 0x1c, 0x05 | mask);
1429 	else {
1430 		snd_es18xx_mixer_write(chip, 0x1c, 0x00 | mask);
1431 		snd_es18xx_write(chip, 0xb4, 0x00);
1432 	}
1433 #ifndef AVOID_POPS
1434 	/* Enable PCM output */
1435 	snd_es18xx_dsp_command(chip, 0xD1);
1436 #endif
1437 
1438         return 0;
1439 }
1440 
1441 static int __devinit snd_es18xx_identify(es18xx_t *chip)
1442 {
1443 	int hi,lo;
1444 
1445 	/* reset */
1446 	if (snd_es18xx_reset(chip) < 0) {
1447 		snd_printk(KERN_ERR "reset at 0x%lx failed!!!\n", chip->port);
1448 		return -ENODEV;
1449 	}
1450 
1451 	snd_es18xx_dsp_command(chip, 0xe7);
1452 	hi = snd_es18xx_dsp_get_byte(chip);
1453 	if (hi < 0) {
1454 		return hi;
1455 	}
1456 	lo = snd_es18xx_dsp_get_byte(chip);
1457 	if ((lo & 0xf0) != 0x80) {
1458 		return -ENODEV;
1459 	}
1460 	if (hi == 0x48) {
1461 		chip->version = 0x488;
1462 		return 0;
1463 	}
1464 	if (hi != 0x68) {
1465 		return -ENODEV;
1466 	}
1467 	if ((lo & 0x0f) < 8) {
1468 		chip->version = 0x688;
1469 		return 0;
1470 	}
1471 
1472         outb(0x40, chip->port + 0x04);
1473 	hi = inb(chip->port + 0x05);
1474 	lo = inb(chip->port + 0x05);
1475 	if (hi != lo) {
1476 		chip->version = hi << 8 | lo;
1477 		chip->ctrl_port = inb(chip->port + 0x05) << 8;
1478 		chip->ctrl_port += inb(chip->port + 0x05);
1479 
1480 		if ((chip->res_ctrl_port = request_region(chip->ctrl_port, 8, "ES18xx - CTRL")) == NULL) {
1481 			snd_printk(KERN_ERR PFX "unable go grab port 0x%lx\n", chip->ctrl_port);
1482 			return -EBUSY;
1483 		}
1484 
1485 		return 0;
1486 	}
1487 
1488 	/* If has Hardware volume */
1489 	if (snd_es18xx_mixer_writable(chip, 0x64, 0x04)) {
1490 		/* If has Audio2 */
1491 		if (snd_es18xx_mixer_writable(chip, 0x70, 0x7f)) {
1492 			/* If has volume count */
1493 			if (snd_es18xx_mixer_writable(chip, 0x64, 0x20)) {
1494 				chip->version = 0x1887;
1495 			} else {
1496 				chip->version = 0x1888;
1497 			}
1498 		} else {
1499 			chip->version = 0x1788;
1500 		}
1501 	}
1502 	else
1503 		chip->version = 0x1688;
1504 	return 0;
1505 }
1506 
1507 static int __devinit snd_es18xx_probe(es18xx_t *chip)
1508 {
1509 	if (snd_es18xx_identify(chip) < 0) {
1510 		snd_printk(KERN_ERR PFX "[0x%lx] ESS chip not found\n", chip->port);
1511                 return -ENODEV;
1512 	}
1513 
1514 	switch (chip->version) {
1515 	case 0x1868:
1516 		chip->caps = ES18XX_DUPLEX_MONO | ES18XX_DUPLEX_SAME | ES18XX_CONTROL | ES18XX_HWV;
1517 		break;
1518 	case 0x1869:
1519 		chip->caps = ES18XX_PCM2 | ES18XX_SPATIALIZER | ES18XX_RECMIX | ES18XX_NEW_RATE | ES18XX_AUXB | ES18XX_MONO | ES18XX_MUTEREC | ES18XX_CONTROL | ES18XX_HWV;
1520 		break;
1521 	case 0x1878:
1522 		chip->caps = ES18XX_DUPLEX_MONO | ES18XX_DUPLEX_SAME | ES18XX_I2S | ES18XX_CONTROL | ES18XX_HWV;
1523 		break;
1524 	case 0x1879:
1525 		chip->caps = ES18XX_PCM2 | ES18XX_SPATIALIZER | ES18XX_RECMIX | ES18XX_NEW_RATE | ES18XX_AUXB | ES18XX_I2S | ES18XX_CONTROL | ES18XX_HWV;
1526 		break;
1527 	case 0x1887:
1528 		chip->caps = ES18XX_PCM2 | ES18XX_RECMIX | ES18XX_AUXB | ES18XX_DUPLEX_SAME | ES18XX_HWV;
1529 		break;
1530 	case 0x1888:
1531 		chip->caps = ES18XX_PCM2 | ES18XX_RECMIX | ES18XX_AUXB | ES18XX_DUPLEX_SAME | ES18XX_HWV;
1532 		break;
1533 	default:
1534 		snd_printk(KERN_ERR "[0x%lx] unsupported chip ES%x\n",
1535                            chip->port, chip->version);
1536                 return -ENODEV;
1537         }
1538 
1539         snd_printd("[0x%lx] ESS%x chip found\n", chip->port, chip->version);
1540 
1541 	if (chip->dma1 == chip->dma2)
1542 		chip->caps &= ~(ES18XX_PCM2 | ES18XX_DUPLEX_SAME);
1543 
1544         return snd_es18xx_initialize(chip);
1545 }
1546 
1547 static snd_pcm_ops_t snd_es18xx_playback_ops = {
1548 	.open =		snd_es18xx_playback_open,
1549 	.close =	snd_es18xx_playback_close,
1550 	.ioctl =	snd_pcm_lib_ioctl,
1551 	.hw_params =	snd_es18xx_playback_hw_params,
1552 	.hw_free =	snd_es18xx_pcm_hw_free,
1553 	.prepare =	snd_es18xx_playback_prepare,
1554 	.trigger =	snd_es18xx_playback_trigger,
1555 	.pointer =	snd_es18xx_playback_pointer,
1556 };
1557 
1558 static snd_pcm_ops_t snd_es18xx_capture_ops = {
1559 	.open =		snd_es18xx_capture_open,
1560 	.close =	snd_es18xx_capture_close,
1561 	.ioctl =	snd_pcm_lib_ioctl,
1562 	.hw_params =	snd_es18xx_capture_hw_params,
1563 	.hw_free =	snd_es18xx_pcm_hw_free,
1564 	.prepare =	snd_es18xx_capture_prepare,
1565 	.trigger =	snd_es18xx_capture_trigger,
1566 	.pointer =	snd_es18xx_capture_pointer,
1567 };
1568 
1569 static void snd_es18xx_pcm_free(snd_pcm_t *pcm)
1570 {
1571 	es18xx_t *codec = pcm->private_data;
1572 	codec->pcm = NULL;
1573 	snd_pcm_lib_preallocate_free_for_all(pcm);
1574 }
1575 
1576 static int __devinit snd_es18xx_pcm(es18xx_t *chip, int device, snd_pcm_t ** rpcm)
1577 {
1578         snd_pcm_t *pcm;
1579 	char str[16];
1580 	int err;
1581 
1582 	if (rpcm)
1583 		*rpcm = NULL;
1584 	sprintf(str, "ES%x", chip->version);
1585 	if (chip->caps & ES18XX_PCM2) {
1586 		err = snd_pcm_new(chip->card, str, device, 2, 1, &pcm);
1587 	} else {
1588 		err = snd_pcm_new(chip->card, str, device, 1, 1, &pcm);
1589 	}
1590         if (err < 0)
1591                 return err;
1592 
1593 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es18xx_playback_ops);
1594 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es18xx_capture_ops);
1595 
1596 	/* global setup */
1597         pcm->private_data = chip;
1598 	pcm->private_free = snd_es18xx_pcm_free;
1599         pcm->info_flags = 0;
1600 	if (chip->caps & ES18XX_DUPLEX_SAME)
1601 		pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1602 	if (! (chip->caps & ES18XX_PCM2))
1603 		pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1604 	sprintf(pcm->name, "ESS AudioDrive ES%x", chip->version);
1605         chip->pcm = pcm;
1606 
1607 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1608 					      snd_dma_isa_data(),
1609 					      64*1024,
1610 					      chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1611 
1612         if (rpcm)
1613         	*rpcm = pcm;
1614 	return 0;
1615 }
1616 
1617 /* Power Management support functions */
1618 #ifdef CONFIG_PM
1619 static int snd_es18xx_suspend(snd_card_t *card, pm_message_t state)
1620 {
1621 	es18xx_t *chip = card->pm_private_data;
1622 
1623 	snd_pcm_suspend_all(chip->pcm);
1624 
1625 	/* power down */
1626 	chip->pm_reg = (unsigned char)snd_es18xx_read(chip, ES18XX_PM);
1627 	chip->pm_reg |= (ES18XX_PM_FM | ES18XX_PM_SUS);
1628 	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg);
1629 	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg ^= ES18XX_PM_SUS);
1630 
1631 	return 0;
1632 }
1633 
1634 static int snd_es18xx_resume(snd_card_t *card)
1635 {
1636 	es18xx_t *chip = card->pm_private_data;
1637 
1638 	/* restore PM register, we won't wake till (not 0x07) i/o activity though */
1639 	snd_es18xx_write(chip, ES18XX_PM, chip->pm_reg ^= ES18XX_PM_FM);
1640 
1641 	return 0;
1642 }
1643 #endif /* CONFIG_PM */
1644 
1645 static int snd_es18xx_free(es18xx_t *chip)
1646 {
1647 	release_and_free_resource(chip->res_port);
1648 	release_and_free_resource(chip->res_ctrl_port);
1649 	release_and_free_resource(chip->res_mpu_port);
1650 	if (chip->irq >= 0)
1651 		free_irq(chip->irq, (void *) chip);
1652 	if (chip->dma1 >= 0) {
1653 		disable_dma(chip->dma1);
1654 		free_dma(chip->dma1);
1655 	}
1656 	if (chip->dma2 >= 0 && chip->dma1 != chip->dma2) {
1657 		disable_dma(chip->dma2);
1658 		free_dma(chip->dma2);
1659 	}
1660 	kfree(chip);
1661 	return 0;
1662 }
1663 
1664 static int snd_es18xx_dev_free(snd_device_t *device)
1665 {
1666 	es18xx_t *chip = device->device_data;
1667 	return snd_es18xx_free(chip);
1668 }
1669 
1670 static int __devinit snd_es18xx_new_device(snd_card_t * card,
1671 					   unsigned long port,
1672 					   unsigned long mpu_port,
1673 					   unsigned long fm_port,
1674 					   int irq, int dma1, int dma2,
1675 					   es18xx_t ** rchip)
1676 {
1677         es18xx_t *chip;
1678 	static snd_device_ops_t ops = {
1679 		.dev_free =	snd_es18xx_dev_free,
1680         };
1681 	int err;
1682 
1683 	*rchip = NULL;
1684         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1685 	if (chip == NULL)
1686 		return -ENOMEM;
1687 	spin_lock_init(&chip->reg_lock);
1688  	spin_lock_init(&chip->mixer_lock);
1689  	spin_lock_init(&chip->ctrl_lock);
1690         chip->card = card;
1691         chip->port = port;
1692         chip->mpu_port = mpu_port;
1693         chip->fm_port = fm_port;
1694         chip->irq = -1;
1695         chip->dma1 = -1;
1696         chip->dma2 = -1;
1697         chip->audio2_vol = 0x00;
1698 	chip->active = 0;
1699 
1700 	if ((chip->res_port = request_region(port, 16, "ES18xx")) == NULL) {
1701 		snd_es18xx_free(chip);
1702 		snd_printk(KERN_ERR PFX "unable to grap ports 0x%lx-0x%lx\n", port, port + 16 - 1);
1703 		return -EBUSY;
1704 	}
1705 
1706 	if (request_irq(irq, snd_es18xx_interrupt, SA_INTERRUPT, "ES18xx", (void *) chip)) {
1707 		snd_es18xx_free(chip);
1708 		snd_printk(KERN_ERR PFX "unable to grap IRQ %d\n", irq);
1709 		return -EBUSY;
1710 	}
1711 	chip->irq = irq;
1712 
1713 	if (request_dma(dma1, "ES18xx DMA 1")) {
1714 		snd_es18xx_free(chip);
1715 		snd_printk(KERN_ERR PFX "unable to grap DMA1 %d\n", dma1);
1716 		return -EBUSY;
1717 	}
1718 	chip->dma1 = dma1;
1719 
1720 	if (dma2 != dma1 && request_dma(dma2, "ES18xx DMA 2")) {
1721 		snd_es18xx_free(chip);
1722 		snd_printk(KERN_ERR PFX "unable to grap DMA2 %d\n", dma2);
1723 		return -EBUSY;
1724 	}
1725 	chip->dma2 = dma2;
1726 
1727         if (snd_es18xx_probe(chip) < 0) {
1728                 snd_es18xx_free(chip);
1729                 return -ENODEV;
1730         }
1731 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1732 		snd_es18xx_free(chip);
1733 		return err;
1734 	}
1735         *rchip = chip;
1736         return 0;
1737 }
1738 
1739 static int __devinit snd_es18xx_mixer(es18xx_t *chip)
1740 {
1741 	snd_card_t *card;
1742 	int err;
1743 	unsigned int idx;
1744 
1745 	card = chip->card;
1746 
1747 	strcpy(card->mixername, chip->pcm->name);
1748 
1749 	for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_base_controls); idx++) {
1750 		snd_kcontrol_t *kctl;
1751 		kctl = snd_ctl_new1(&snd_es18xx_base_controls[idx], chip);
1752 		if (chip->caps & ES18XX_HWV) {
1753 			switch (idx) {
1754 			case 0:
1755 				chip->master_volume = kctl;
1756 				kctl->private_free = snd_es18xx_hwv_free;
1757 				break;
1758 			case 1:
1759 				chip->master_switch = kctl;
1760 				kctl->private_free = snd_es18xx_hwv_free;
1761 				break;
1762 			}
1763 		}
1764 		if ((err = snd_ctl_add(card, kctl)) < 0)
1765 			return err;
1766 	}
1767 	if (chip->caps & ES18XX_PCM2) {
1768 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_pcm2_controls); idx++) {
1769 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_pcm2_controls[idx], chip))) < 0)
1770 				return err;
1771 		}
1772 	} else {
1773 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_pcm1_controls); idx++) {
1774 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_pcm1_controls[idx], chip))) < 0)
1775 				return err;
1776 		}
1777 	}
1778 
1779 	if (chip->caps & ES18XX_MONO) {
1780 		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_mono_in_control, chip))) < 0)
1781 			return err;
1782 	}
1783 	if (chip->caps & ES18XX_RECMIX) {
1784 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_recmix_controls); idx++) {
1785 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_recmix_controls[idx], chip))) < 0)
1786 				return err;
1787 		}
1788 	}
1789 	switch (chip->version) {
1790 	default:
1791 		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_micpre1_control, chip))) < 0)
1792 			return err;
1793 		break;
1794 	case 0x1869:
1795 	case 0x1879:
1796 		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_micpre2_control, chip))) < 0)
1797 			return err;
1798 		break;
1799 	}
1800 	if (chip->caps & ES18XX_SPATIALIZER) {
1801 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_spatializer_controls); idx++) {
1802 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es18xx_spatializer_controls[idx], chip))) < 0)
1803 				return err;
1804 		}
1805 	}
1806 	if (chip->caps & ES18XX_HWV) {
1807 		for (idx = 0; idx < ARRAY_SIZE(snd_es18xx_hw_volume_controls); idx++) {
1808 			snd_kcontrol_t *kctl;
1809 			kctl = snd_ctl_new1(&snd_es18xx_hw_volume_controls[idx], chip);
1810 			if (idx == 0)
1811 				chip->hw_volume = kctl;
1812 			else
1813 				chip->hw_switch = kctl;
1814 			kctl->private_free = snd_es18xx_hwv_free;
1815 			if ((err = snd_ctl_add(card, kctl)) < 0)
1816 				return err;
1817 
1818 		}
1819 	}
1820 	return 0;
1821 }
1822 
1823 
1824 /* Card level */
1825 
1826 MODULE_AUTHOR("Christian Fischbach <fishbach@pool.informatik.rwth-aachen.de>, Abramo Bagnara <abramo@alsa-project.org>");
1827 MODULE_DESCRIPTION("ESS ES18xx AudioDrive");
1828 MODULE_LICENSE("GPL");
1829 MODULE_SUPPORTED_DEVICE("{{ESS,ES1868 PnP AudioDrive},"
1830 		"{ESS,ES1869 PnP AudioDrive},"
1831 		"{ESS,ES1878 PnP AudioDrive},"
1832 		"{ESS,ES1879 PnP AudioDrive},"
1833 		"{ESS,ES1887 PnP AudioDrive},"
1834 		"{ESS,ES1888 PnP AudioDrive},"
1835 		"{ESS,ES1887 AudioDrive},"
1836 		"{ESS,ES1888 AudioDrive}}");
1837 
1838 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
1839 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
1840 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_ISAPNP; /* Enable this card */
1841 #ifdef CONFIG_PNP
1842 static int isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
1843 #endif
1844 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* 0x220,0x240,0x260,0x280 */
1845 #ifndef CONFIG_PNP
1846 static long mpu_port[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
1847 #else
1848 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
1849 #endif
1850 static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
1851 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,10 */
1852 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
1853 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3 */
1854 
1855 module_param_array(index, int, NULL, 0444);
1856 MODULE_PARM_DESC(index, "Index value for ES18xx soundcard.");
1857 module_param_array(id, charp, NULL, 0444);
1858 MODULE_PARM_DESC(id, "ID string for ES18xx soundcard.");
1859 module_param_array(enable, bool, NULL, 0444);
1860 MODULE_PARM_DESC(enable, "Enable ES18xx soundcard.");
1861 #ifdef CONFIG_PNP
1862 module_param_array(isapnp, bool, NULL, 0444);
1863 MODULE_PARM_DESC(isapnp, "PnP detection for specified soundcard.");
1864 #endif
1865 module_param_array(port, long, NULL, 0444);
1866 MODULE_PARM_DESC(port, "Port # for ES18xx driver.");
1867 module_param_array(mpu_port, long, NULL, 0444);
1868 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for ES18xx driver.");
1869 module_param_array(fm_port, long, NULL, 0444);
1870 MODULE_PARM_DESC(fm_port, "FM port # for ES18xx driver.");
1871 module_param_array(irq, int, NULL, 0444);
1872 MODULE_PARM_DESC(irq, "IRQ # for ES18xx driver.");
1873 module_param_array(dma1, int, NULL, 0444);
1874 MODULE_PARM_DESC(dma1, "DMA 1 # for ES18xx driver.");
1875 module_param_array(dma2, int, NULL, 0444);
1876 MODULE_PARM_DESC(dma2, "DMA 2 # for ES18xx driver.");
1877 
1878 struct snd_audiodrive {
1879 #ifdef CONFIG_PNP
1880 	struct pnp_dev *dev;
1881 	struct pnp_dev *devc;
1882 #endif
1883 };
1884 
1885 static snd_card_t *snd_audiodrive_legacy[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
1886 
1887 #ifdef CONFIG_PNP
1888 
1889 static struct pnp_card_device_id snd_audiodrive_pnpids[] = {
1890 	/* ESS 1868 (integrated on Compaq dual P-Pro motherboard and Genius 18PnP 3D) */
1891 	{ .id = "ESS1868", .devs = { { "ESS1868" }, { "ESS0000" } } },
1892 	/* ESS 1868 (integrated on Maxisound Cards) */
1893 	{ .id = "ESS1868", .devs = { { "ESS8601" }, { "ESS8600" } } },
1894 	/* ESS 1868 (integrated on Maxisound Cards) */
1895 	{ .id = "ESS1868", .devs = { { "ESS8611" }, { "ESS8610" } } },
1896 	/* ESS ES1869 Plug and Play AudioDrive */
1897 	{ .id = "ESS0003", .devs = { { "ESS1869" }, { "ESS0006" } } },
1898 	/* ESS 1869 */
1899 	{ .id = "ESS1869", .devs = { { "ESS1869" }, { "ESS0006" } } },
1900 	/* ESS 1878 */
1901 	{ .id = "ESS1878", .devs = { { "ESS1878" }, { "ESS0004" } } },
1902 	/* ESS 1879 */
1903 	{ .id = "ESS1879", .devs = { { "ESS1879" }, { "ESS0009" } } },
1904 	/* --- */
1905 	{ .id = "" } /* end */
1906 };
1907 
1908 MODULE_DEVICE_TABLE(pnp_card, snd_audiodrive_pnpids);
1909 
1910 static int __devinit snd_audiodrive_pnp(int dev, struct snd_audiodrive *acard,
1911 					struct pnp_card_link *card,
1912 					const struct pnp_card_device_id *id)
1913 {
1914 	struct pnp_dev *pdev;
1915 	struct pnp_resource_table * cfg = kmalloc(sizeof(struct pnp_resource_table), GFP_KERNEL);
1916 	int err;
1917 
1918 	if (!cfg)
1919 		return -ENOMEM;
1920 	acard->dev = pnp_request_card_device(card, id->devs[0].id, NULL);
1921 	if (acard->dev == NULL) {
1922 		kfree(cfg);
1923 		return -EBUSY;
1924 	}
1925 	acard->devc = pnp_request_card_device(card, id->devs[1].id, NULL);
1926 	if (acard->devc == NULL) {
1927 		kfree(cfg);
1928 		return -EBUSY;
1929 	}
1930 	/* Control port initialization */
1931 	err = pnp_activate_dev(acard->devc);
1932 	if (err < 0) {
1933 		snd_printk(KERN_ERR PFX "PnP control configure failure (out of resources?)\n");
1934 		return -EAGAIN;
1935 	}
1936 	snd_printdd("pnp: port=0x%lx\n", pnp_port_start(acard->devc, 0));
1937 	/* PnP initialization */
1938 	pdev = acard->dev;
1939 	pnp_init_resource_table(cfg);
1940 	if (port[dev] != SNDRV_AUTO_PORT)
1941 		pnp_resource_change(&cfg->port_resource[0], port[dev], 16);
1942 	if (fm_port[dev] != SNDRV_AUTO_PORT)
1943 		pnp_resource_change(&cfg->port_resource[1], fm_port[dev], 4);
1944 	if (mpu_port[dev] != SNDRV_AUTO_PORT)
1945 		pnp_resource_change(&cfg->port_resource[2], mpu_port[dev], 2);
1946 	if (dma1[dev] != SNDRV_AUTO_DMA)
1947 		pnp_resource_change(&cfg->dma_resource[0], dma1[dev], 1);
1948 	if (dma2[dev] != SNDRV_AUTO_DMA)
1949 		pnp_resource_change(&cfg->dma_resource[1], dma2[dev], 1);
1950 	if (irq[dev] != SNDRV_AUTO_IRQ)
1951 		pnp_resource_change(&cfg->irq_resource[0], irq[dev], 1);
1952 	err = pnp_manual_config_dev(pdev, cfg, 0);
1953 	if (err < 0)
1954 		snd_printk(KERN_ERR PFX "PnP manual resources are invalid, using auto config\n");
1955 	err = pnp_activate_dev(pdev);
1956 	if (err < 0) {
1957 		snd_printk(KERN_ERR PFX "PnP configure failure (out of resources?)\n");
1958 		kfree(cfg);
1959 		return -EBUSY;
1960 	}
1961 	/* ok. hack using Vendor-Defined Card-Level registers */
1962 	/* skip csn and logdev initialization - already done in isapnp_configure */
1963 	if (pnp_device_is_isapnp(pdev)) {
1964 		isapnp_cfg_begin(isapnp_card_number(pdev), isapnp_csn_number(pdev));
1965 		isapnp_write_byte(0x27, pnp_irq(pdev, 0));	/* Hardware Volume IRQ Number */
1966 		if (mpu_port[dev] != SNDRV_AUTO_PORT)
1967 			isapnp_write_byte(0x28, pnp_irq(pdev, 0)); /* MPU-401 IRQ Number */
1968 		isapnp_write_byte(0x72, pnp_irq(pdev, 0));	/* second IRQ */
1969 		isapnp_cfg_end();
1970 	} else {
1971 		snd_printk(KERN_ERR PFX "unable to install ISA PnP hack, expect malfunction\n");
1972 	}
1973 	port[dev] = pnp_port_start(pdev, 0);
1974 	fm_port[dev] = pnp_port_start(pdev, 1);
1975 	mpu_port[dev] = pnp_port_start(pdev, 2);
1976 	dma1[dev] = pnp_dma(pdev, 0);
1977 	dma2[dev] = pnp_dma(pdev, 1);
1978 	irq[dev] = pnp_irq(pdev, 0);
1979 	snd_printdd("PnP ES18xx: port=0x%lx, fm port=0x%lx, mpu port=0x%lx\n", port[dev], fm_port[dev], mpu_port[dev]);
1980 	snd_printdd("PnP ES18xx: dma1=%i, dma2=%i, irq=%i\n", dma1[dev], dma2[dev], irq[dev]);
1981 	kfree(cfg);
1982 	return 0;
1983 }
1984 #endif /* CONFIG_PNP */
1985 
1986 #ifdef CONFIG_PNP
1987 #define is_isapnp_selected(dev)		isapnp[dev]
1988 #else
1989 #define is_isapnp_selected(dev)		0
1990 #endif
1991 
1992 static int __devinit snd_audiodrive_probe(int dev, struct pnp_card_link *pcard,
1993 					  const struct pnp_card_device_id *pid)
1994 {
1995 	static int possible_irqs[] = {5, 9, 10, 7, 11, 12, -1};
1996 	static int possible_dmas[] = {1, 0, 3, 5, -1};
1997 	int xirq, xdma1, xdma2;
1998 	snd_card_t *card;
1999 	struct snd_audiodrive *acard;
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_printk(KERN_ERR PFX "unable to find a free IRQ\n");
2023 			err = -EBUSY;
2024 			goto _err;
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_printk(KERN_ERR PFX "unable to find a free DMA1\n");
2031 			err = -EBUSY;
2032 			goto _err;
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_printk(KERN_ERR PFX "unable to find a free DMA2\n");
2039 			err = -EBUSY;
2040 			goto _err;
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 		goto _err;
2051 
2052 	sprintf(card->driver, "ES%x", chip->version);
2053 	sprintf(card->shortname, "ESS AudioDrive ES%x", chip->version);
2054 	if (xdma1 != xdma2)
2055 		sprintf(card->longname, "%s at 0x%lx, irq %d, dma1 %d, dma2 %d",
2056 			card->shortname,
2057 			chip->port,
2058 			xirq, xdma1, xdma2);
2059 	else
2060 		sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
2061 			card->shortname,
2062 			chip->port,
2063 			xirq, xdma1);
2064 
2065 	if ((err = snd_es18xx_pcm(chip, 0, NULL)) < 0)
2066 		goto _err;
2067 
2068 	if ((err = snd_es18xx_mixer(chip)) < 0)
2069 		goto _err;
2070 
2071 	if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
2072 		if (snd_opl3_create(card, chip->fm_port, chip->fm_port + 2, OPL3_HW_OPL3, 0, &opl3) < 0) {
2073 			snd_printk(KERN_WARNING PFX "opl3 not detected at 0x%lx\n", chip->fm_port);
2074 		} else {
2075 			if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
2076 				goto _err;
2077 		}
2078 	}
2079 
2080 	if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
2081 		if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_ES18XX,
2082 					       chip->mpu_port, 0,
2083 					       xirq, 0,
2084 					       &chip->rmidi)) < 0)
2085 			goto _err;
2086 	}
2087 
2088 	if ((err = snd_card_set_generic_dev(card)) < 0)
2089 		goto _err;
2090 
2091 	/* Power Management */
2092 	snd_card_set_isa_pm_callback(card, snd_es18xx_suspend, snd_es18xx_resume, chip);
2093 
2094 	if ((err = snd_card_register(card)) < 0)
2095 		goto _err;
2096 
2097 	if (pcard)
2098 		pnp_set_card_drvdata(pcard, card);
2099 	else
2100 		snd_audiodrive_legacy[dev] = card;
2101 	return 0;
2102 
2103  _err:
2104 	snd_card_free(card);
2105 	return err;
2106 }
2107 
2108 static int __devinit snd_audiodrive_probe_legacy_port(unsigned long xport)
2109 {
2110 	static int dev;
2111 	int res;
2112 
2113 	for ( ; dev < SNDRV_CARDS; dev++) {
2114 		if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
2115 			continue;
2116 		if (is_isapnp_selected(dev))
2117 			continue;
2118 		port[dev] = xport;
2119 		res = snd_audiodrive_probe(dev, NULL, NULL);
2120 		if (res < 0)
2121 			port[dev] = SNDRV_AUTO_PORT;
2122 		return res;
2123 	}
2124 	return -ENODEV;
2125 }
2126 
2127 
2128 #ifdef CONFIG_PNP
2129 static int __devinit snd_audiodrive_pnp_detect(struct pnp_card_link *card,
2130 					       const struct pnp_card_device_id *id)
2131 {
2132 	static int dev;
2133 	int res;
2134 
2135 	for ( ; dev < SNDRV_CARDS; dev++) {
2136 		if (!enable[dev] || !isapnp[dev])
2137 			continue;
2138                 res = snd_audiodrive_probe(dev, card, id);
2139 		if (res < 0)
2140 			return res;
2141 		dev++;
2142 		return 0;
2143         }
2144 
2145         return -ENODEV;
2146 }
2147 
2148 static void __devexit snd_audiodrive_pnp_remove(struct pnp_card_link * pcard)
2149 {
2150 	snd_card_t *card = (snd_card_t *) pnp_get_card_drvdata(pcard);
2151 
2152 	snd_card_disconnect(card);
2153 	snd_card_free_in_thread(card);
2154 }
2155 
2156 static struct pnp_card_driver es18xx_pnpc_driver = {
2157 	.flags = PNP_DRIVER_RES_DISABLE,
2158 	.name = "es18xx",
2159 	.id_table = snd_audiodrive_pnpids,
2160 	.probe = snd_audiodrive_pnp_detect,
2161 	.remove = __devexit_p(snd_audiodrive_pnp_remove),
2162 };
2163 #endif /* CONFIG_PNP */
2164 
2165 static int __init alsa_card_es18xx_init(void)
2166 {
2167 	static unsigned long possible_ports[] = {0x220, 0x240, 0x260, 0x280, -1};
2168 	int dev, cards = 0, i;
2169 
2170 	/* legacy non-auto cards at first */
2171 	for (dev = 0; dev < SNDRV_CARDS; dev++) {
2172 		if (!enable[dev] || port[dev] == SNDRV_AUTO_PORT)
2173 			continue;
2174 		if (is_isapnp_selected(dev))
2175 			continue;
2176 		if (snd_audiodrive_probe(dev, NULL, NULL) >= 0)
2177 			cards++;
2178 	}
2179 	/* legacy auto configured cards */
2180 	i = snd_legacy_auto_probe(possible_ports, snd_audiodrive_probe_legacy_port);
2181 	if (i > 0)
2182 		cards += i;
2183 
2184 #ifdef CONFIG_PNP
2185 	/* ISA PnP cards at last */
2186 	i = pnp_register_card_driver(&es18xx_pnpc_driver);
2187 	if (i > 0)
2188 		cards += i;
2189 
2190 #endif
2191 	if(!cards) {
2192 #ifdef CONFIG_PNP
2193 		pnp_unregister_card_driver(&es18xx_pnpc_driver);
2194 #endif
2195 #ifdef MODULE
2196 		snd_printk(KERN_ERR "ESS AudioDrive ES18xx soundcard not found or device busy\n");
2197 #endif
2198 		return -ENODEV;
2199 	}
2200 	return 0;
2201 }
2202 
2203 static void __exit alsa_card_es18xx_exit(void)
2204 {
2205 	int idx;
2206 
2207 #ifdef CONFIG_PNP
2208 	/* PnP cards first */
2209 	pnp_unregister_card_driver(&es18xx_pnpc_driver);
2210 #endif
2211 	for(idx = 0; idx < SNDRV_CARDS; idx++)
2212 		snd_card_free(snd_audiodrive_legacy[idx]);
2213 }
2214 
2215 module_init(alsa_card_es18xx_init)
2216 module_exit(alsa_card_es18xx_exit)
2217