xref: /openbmc/linux/sound/pci/es1938.c (revision b454cc66)
1 /*
2  *  Driver for ESS Solo-1 (ES1938, ES1946, ES1969) soundcard
3  *  Copyright (c) by Jaromir Koutek <miri@punknet.cz>,
4  *                   Jaroslav Kysela <perex@suse.cz>,
5  *                   Thomas Sailer <sailer@ife.ee.ethz.ch>,
6  *                   Abramo Bagnara <abramo@alsa-project.org>,
7  *                   Markus Gruber <gruber@eikon.tum.de>
8  *
9  * Rewritten from sonicvibes.c source.
10  *
11  *  TODO:
12  *    Rewrite better spinlocks
13  *
14  *
15  *   This program is free software; you can redistribute it and/or modify
16  *   it under the terms of the GNU General Public License as published by
17  *   the Free Software Foundation; either version 2 of the License, or
18  *   (at your option) any later version.
19  *
20  *   This program is distributed in the hope that it will be useful,
21  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
22  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23  *   GNU General Public License for more details.
24  *
25  *   You should have received a copy of the GNU General Public License
26  *   along with this program; if not, write to the Free Software
27  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
28  *
29  */
30 
31 /*
32   NOTES:
33   - Capture data is written unaligned starting from dma_base + 1 so I need to
34     disable mmap and to add a copy callback.
35   - After several cycle of the following:
36     while : ; do arecord -d1 -f cd -t raw | aplay -f cd ; done
37     a "playback write error (DMA or IRQ trouble?)" may happen.
38     This is due to playback interrupts not generated.
39     I suspect a timing issue.
40   - Sometimes the interrupt handler is invoked wrongly during playback.
41     This generates some harmless "Unexpected hw_pointer: wrong interrupt
42     acknowledge".
43     I've seen that using small period sizes.
44     Reproducible with:
45     mpg123 test.mp3 &
46     hdparm -t -T /dev/hda
47 */
48 
49 
50 #include <sound/driver.h>
51 #include <linux/init.h>
52 #include <linux/interrupt.h>
53 #include <linux/pci.h>
54 #include <linux/slab.h>
55 #include <linux/gameport.h>
56 #include <linux/moduleparam.h>
57 #include <linux/delay.h>
58 #include <linux/dma-mapping.h>
59 #include <sound/core.h>
60 #include <sound/control.h>
61 #include <sound/pcm.h>
62 #include <sound/opl3.h>
63 #include <sound/mpu401.h>
64 #include <sound/initval.h>
65 #include <sound/tlv.h>
66 
67 #include <asm/io.h>
68 
69 MODULE_AUTHOR("Jaromir Koutek <miri@punknet.cz>");
70 MODULE_DESCRIPTION("ESS Solo-1");
71 MODULE_LICENSE("GPL");
72 MODULE_SUPPORTED_DEVICE("{{ESS,ES1938},"
73                 "{ESS,ES1946},"
74                 "{ESS,ES1969},"
75 		"{TerraTec,128i PCI}}");
76 
77 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
78 #define SUPPORT_JOYSTICK 1
79 #endif
80 
81 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
82 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
83 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
84 
85 module_param_array(index, int, NULL, 0444);
86 MODULE_PARM_DESC(index, "Index value for ESS Solo-1 soundcard.");
87 module_param_array(id, charp, NULL, 0444);
88 MODULE_PARM_DESC(id, "ID string for ESS Solo-1 soundcard.");
89 module_param_array(enable, bool, NULL, 0444);
90 MODULE_PARM_DESC(enable, "Enable ESS Solo-1 soundcard.");
91 
92 #define SLIO_REG(chip, x) ((chip)->io_port + ESSIO_REG_##x)
93 
94 #define SLDM_REG(chip, x) ((chip)->ddma_port + ESSDM_REG_##x)
95 
96 #define SLSB_REG(chip, x) ((chip)->sb_port + ESSSB_REG_##x)
97 
98 #define SL_PCI_LEGACYCONTROL		0x40
99 #define SL_PCI_CONFIG			0x50
100 #define SL_PCI_DDMACONTROL		0x60
101 
102 #define ESSIO_REG_AUDIO2DMAADDR		0
103 #define ESSIO_REG_AUDIO2DMACOUNT	4
104 #define ESSIO_REG_AUDIO2MODE		6
105 #define ESSIO_REG_IRQCONTROL		7
106 
107 #define ESSDM_REG_DMAADDR		0x00
108 #define ESSDM_REG_DMACOUNT		0x04
109 #define ESSDM_REG_DMACOMMAND		0x08
110 #define ESSDM_REG_DMASTATUS		0x08
111 #define ESSDM_REG_DMAMODE		0x0b
112 #define ESSDM_REG_DMACLEAR		0x0d
113 #define ESSDM_REG_DMAMASK		0x0f
114 
115 #define ESSSB_REG_FMLOWADDR		0x00
116 #define ESSSB_REG_FMHIGHADDR		0x02
117 #define ESSSB_REG_MIXERADDR		0x04
118 #define ESSSB_REG_MIXERDATA		0x05
119 
120 #define ESSSB_IREG_AUDIO1		0x14
121 #define ESSSB_IREG_MICMIX		0x1a
122 #define ESSSB_IREG_RECSRC		0x1c
123 #define ESSSB_IREG_MASTER		0x32
124 #define ESSSB_IREG_FM			0x36
125 #define ESSSB_IREG_AUXACD		0x38
126 #define ESSSB_IREG_AUXB			0x3a
127 #define ESSSB_IREG_PCSPEAKER		0x3c
128 #define ESSSB_IREG_LINE			0x3e
129 #define ESSSB_IREG_SPATCONTROL		0x50
130 #define ESSSB_IREG_SPATLEVEL		0x52
131 #define ESSSB_IREG_MASTER_LEFT		0x60
132 #define ESSSB_IREG_MASTER_RIGHT		0x62
133 #define ESSSB_IREG_MPU401CONTROL	0x64
134 #define ESSSB_IREG_MICMIXRECORD		0x68
135 #define ESSSB_IREG_AUDIO2RECORD		0x69
136 #define ESSSB_IREG_AUXACDRECORD		0x6a
137 #define ESSSB_IREG_FMRECORD		0x6b
138 #define ESSSB_IREG_AUXBRECORD		0x6c
139 #define ESSSB_IREG_MONO			0x6d
140 #define ESSSB_IREG_LINERECORD		0x6e
141 #define ESSSB_IREG_MONORECORD		0x6f
142 #define ESSSB_IREG_AUDIO2SAMPLE		0x70
143 #define ESSSB_IREG_AUDIO2MODE		0x71
144 #define ESSSB_IREG_AUDIO2FILTER		0x72
145 #define ESSSB_IREG_AUDIO2TCOUNTL	0x74
146 #define ESSSB_IREG_AUDIO2TCOUNTH	0x76
147 #define ESSSB_IREG_AUDIO2CONTROL1	0x78
148 #define ESSSB_IREG_AUDIO2CONTROL2	0x7a
149 #define ESSSB_IREG_AUDIO2		0x7c
150 
151 #define ESSSB_REG_RESET			0x06
152 
153 #define ESSSB_REG_READDATA		0x0a
154 #define ESSSB_REG_WRITEDATA		0x0c
155 #define ESSSB_REG_READSTATUS		0x0c
156 
157 #define ESSSB_REG_STATUS		0x0e
158 
159 #define ESS_CMD_EXTSAMPLERATE		0xa1
160 #define ESS_CMD_FILTERDIV		0xa2
161 #define ESS_CMD_DMACNTRELOADL		0xa4
162 #define ESS_CMD_DMACNTRELOADH		0xa5
163 #define ESS_CMD_ANALOGCONTROL		0xa8
164 #define ESS_CMD_IRQCONTROL		0xb1
165 #define ESS_CMD_DRQCONTROL		0xb2
166 #define ESS_CMD_RECLEVEL		0xb4
167 #define ESS_CMD_SETFORMAT		0xb6
168 #define ESS_CMD_SETFORMAT2		0xb7
169 #define ESS_CMD_DMACONTROL		0xb8
170 #define ESS_CMD_DMATYPE			0xb9
171 #define ESS_CMD_OFFSETLEFT		0xba
172 #define ESS_CMD_OFFSETRIGHT		0xbb
173 #define ESS_CMD_READREG			0xc0
174 #define ESS_CMD_ENABLEEXT		0xc6
175 #define ESS_CMD_PAUSEDMA		0xd0
176 #define ESS_CMD_ENABLEAUDIO1		0xd1
177 #define ESS_CMD_STOPAUDIO1		0xd3
178 #define ESS_CMD_AUDIO1STATUS		0xd8
179 #define ESS_CMD_CONTDMA			0xd4
180 #define ESS_CMD_TESTIRQ			0xf2
181 
182 #define ESS_RECSRC_MIC		0
183 #define ESS_RECSRC_AUXACD	2
184 #define ESS_RECSRC_AUXB		5
185 #define ESS_RECSRC_LINE		6
186 #define ESS_RECSRC_NONE		7
187 
188 #define DAC1 0x01
189 #define ADC1 0x02
190 #define DAC2 0x04
191 
192 /*
193 
194  */
195 
196 #define SAVED_REG_SIZE	32 /* max. number of registers to save */
197 
198 struct es1938 {
199 	int irq;
200 
201 	unsigned long io_port;
202 	unsigned long sb_port;
203 	unsigned long vc_port;
204 	unsigned long mpu_port;
205 	unsigned long game_port;
206 	unsigned long ddma_port;
207 
208 	unsigned char irqmask;
209 	unsigned char revision;
210 
211 	struct snd_kcontrol *hw_volume;
212 	struct snd_kcontrol *hw_switch;
213 	struct snd_kcontrol *master_volume;
214 	struct snd_kcontrol *master_switch;
215 
216 	struct pci_dev *pci;
217 	struct snd_card *card;
218 	struct snd_pcm *pcm;
219 	struct snd_pcm_substream *capture_substream;
220 	struct snd_pcm_substream *playback1_substream;
221 	struct snd_pcm_substream *playback2_substream;
222 	struct snd_rawmidi *rmidi;
223 
224 	unsigned int dma1_size;
225 	unsigned int dma2_size;
226 	unsigned int dma1_start;
227 	unsigned int dma2_start;
228 	unsigned int dma1_shift;
229 	unsigned int dma2_shift;
230 	unsigned int active;
231 
232 	spinlock_t reg_lock;
233 	spinlock_t mixer_lock;
234         struct snd_info_entry *proc_entry;
235 
236 #ifdef SUPPORT_JOYSTICK
237 	struct gameport *gameport;
238 #endif
239 #ifdef CONFIG_PM
240 	unsigned char saved_regs[SAVED_REG_SIZE];
241 #endif
242 };
243 
244 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id);
245 
246 static struct pci_device_id snd_es1938_ids[] = {
247         { 0x125d, 0x1969, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* Solo-1 */
248 	{ 0, }
249 };
250 
251 MODULE_DEVICE_TABLE(pci, snd_es1938_ids);
252 
253 #define RESET_LOOP_TIMEOUT	0x10000
254 #define WRITE_LOOP_TIMEOUT	0x10000
255 #define GET_LOOP_TIMEOUT	0x01000
256 
257 #undef REG_DEBUG
258 /* -----------------------------------------------------------------
259  * Write to a mixer register
260  * -----------------------------------------------------------------*/
261 static void snd_es1938_mixer_write(struct es1938 *chip, unsigned char reg, unsigned char val)
262 {
263 	unsigned long flags;
264 	spin_lock_irqsave(&chip->mixer_lock, flags);
265 	outb(reg, SLSB_REG(chip, MIXERADDR));
266 	outb(val, SLSB_REG(chip, MIXERDATA));
267 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
268 #ifdef REG_DEBUG
269 	snd_printk(KERN_DEBUG "Mixer reg %02x set to %02x\n", reg, val);
270 #endif
271 }
272 
273 /* -----------------------------------------------------------------
274  * Read from a mixer register
275  * -----------------------------------------------------------------*/
276 static int snd_es1938_mixer_read(struct es1938 *chip, unsigned char reg)
277 {
278 	int data;
279 	unsigned long flags;
280 	spin_lock_irqsave(&chip->mixer_lock, flags);
281 	outb(reg, SLSB_REG(chip, MIXERADDR));
282 	data = inb(SLSB_REG(chip, MIXERDATA));
283 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
284 #ifdef REG_DEBUG
285 	snd_printk(KERN_DEBUG "Mixer reg %02x now is %02x\n", reg, data);
286 #endif
287 	return data;
288 }
289 
290 /* -----------------------------------------------------------------
291  * Write to some bits of a mixer register (return old value)
292  * -----------------------------------------------------------------*/
293 static int snd_es1938_mixer_bits(struct es1938 *chip, unsigned char reg,
294 				 unsigned char mask, unsigned char val)
295 {
296 	unsigned long flags;
297 	unsigned char old, new, oval;
298 	spin_lock_irqsave(&chip->mixer_lock, flags);
299 	outb(reg, SLSB_REG(chip, MIXERADDR));
300 	old = inb(SLSB_REG(chip, MIXERDATA));
301 	oval = old & mask;
302 	if (val != oval) {
303 		new = (old & ~mask) | (val & mask);
304 		outb(new, SLSB_REG(chip, MIXERDATA));
305 #ifdef REG_DEBUG
306 		snd_printk(KERN_DEBUG "Mixer reg %02x was %02x, set to %02x\n",
307 			   reg, old, new);
308 #endif
309 	}
310 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
311 	return oval;
312 }
313 
314 /* -----------------------------------------------------------------
315  * Write command to Controller Registers
316  * -----------------------------------------------------------------*/
317 static void snd_es1938_write_cmd(struct es1938 *chip, unsigned char cmd)
318 {
319 	int i;
320 	unsigned char v;
321 	for (i = 0; i < WRITE_LOOP_TIMEOUT; i++) {
322 		if (!(v = inb(SLSB_REG(chip, READSTATUS)) & 0x80)) {
323 			outb(cmd, SLSB_REG(chip, WRITEDATA));
324 			return;
325 		}
326 	}
327 	printk(KERN_ERR "snd_es1938_write_cmd timeout (0x02%x/0x02%x)\n", cmd, v);
328 }
329 
330 /* -----------------------------------------------------------------
331  * Read the Read Data Buffer
332  * -----------------------------------------------------------------*/
333 static int snd_es1938_get_byte(struct es1938 *chip)
334 {
335 	int i;
336 	unsigned char v;
337 	for (i = GET_LOOP_TIMEOUT; i; i--)
338 		if ((v = inb(SLSB_REG(chip, STATUS))) & 0x80)
339 			return inb(SLSB_REG(chip, READDATA));
340 	snd_printk(KERN_ERR "get_byte timeout: status 0x02%x\n", v);
341 	return -ENODEV;
342 }
343 
344 /* -----------------------------------------------------------------
345  * Write value cmd register
346  * -----------------------------------------------------------------*/
347 static void snd_es1938_write(struct es1938 *chip, unsigned char reg, unsigned char val)
348 {
349 	unsigned long flags;
350 	spin_lock_irqsave(&chip->reg_lock, flags);
351 	snd_es1938_write_cmd(chip, reg);
352 	snd_es1938_write_cmd(chip, val);
353 	spin_unlock_irqrestore(&chip->reg_lock, flags);
354 #ifdef REG_DEBUG
355 	snd_printk(KERN_DEBUG "Reg %02x set to %02x\n", reg, val);
356 #endif
357 }
358 
359 /* -----------------------------------------------------------------
360  * Read data from cmd register and return it
361  * -----------------------------------------------------------------*/
362 static unsigned char snd_es1938_read(struct es1938 *chip, unsigned char reg)
363 {
364 	unsigned char val;
365 	unsigned long flags;
366 	spin_lock_irqsave(&chip->reg_lock, flags);
367 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
368 	snd_es1938_write_cmd(chip, reg);
369 	val = snd_es1938_get_byte(chip);
370 	spin_unlock_irqrestore(&chip->reg_lock, flags);
371 #ifdef REG_DEBUG
372 	snd_printk(KERN_DEBUG "Reg %02x now is %02x\n", reg, val);
373 #endif
374 	return val;
375 }
376 
377 /* -----------------------------------------------------------------
378  * Write data to cmd register and return old value
379  * -----------------------------------------------------------------*/
380 static int snd_es1938_bits(struct es1938 *chip, unsigned char reg, unsigned char mask,
381 			   unsigned char val)
382 {
383 	unsigned long flags;
384 	unsigned char old, new, oval;
385 	spin_lock_irqsave(&chip->reg_lock, flags);
386 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
387 	snd_es1938_write_cmd(chip, reg);
388 	old = snd_es1938_get_byte(chip);
389 	oval = old & mask;
390 	if (val != oval) {
391 		snd_es1938_write_cmd(chip, reg);
392 		new = (old & ~mask) | (val & mask);
393 		snd_es1938_write_cmd(chip, new);
394 #ifdef REG_DEBUG
395 		snd_printk(KERN_DEBUG "Reg %02x was %02x, set to %02x\n",
396 			   reg, old, new);
397 #endif
398 	}
399 	spin_unlock_irqrestore(&chip->reg_lock, flags);
400 	return oval;
401 }
402 
403 /* --------------------------------------------------------------------
404  * Reset the chip
405  * --------------------------------------------------------------------*/
406 static void snd_es1938_reset(struct es1938 *chip)
407 {
408 	int i;
409 
410 	outb(3, SLSB_REG(chip, RESET));
411 	inb(SLSB_REG(chip, RESET));
412 	outb(0, SLSB_REG(chip, RESET));
413 	for (i = 0; i < RESET_LOOP_TIMEOUT; i++) {
414 		if (inb(SLSB_REG(chip, STATUS)) & 0x80) {
415 			if (inb(SLSB_REG(chip, READDATA)) == 0xaa)
416 				goto __next;
417 		}
418 	}
419 	snd_printk(KERN_ERR "ESS Solo-1 reset failed\n");
420 
421      __next:
422 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEEXT);
423 
424 	/* Demand transfer DMA: 4 bytes per DMA request */
425 	snd_es1938_write(chip, ESS_CMD_DMATYPE, 2);
426 
427 	/* Change behaviour of register A1
428 	   4x oversampling
429 	   2nd channel DAC asynchronous */
430 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2MODE, 0x32);
431 	/* enable/select DMA channel and IRQ channel */
432 	snd_es1938_bits(chip, ESS_CMD_IRQCONTROL, 0xf0, 0x50);
433 	snd_es1938_bits(chip, ESS_CMD_DRQCONTROL, 0xf0, 0x50);
434 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEAUDIO1);
435 	/* Set spatializer parameters to recommended values */
436 	snd_es1938_mixer_write(chip, 0x54, 0x8f);
437 	snd_es1938_mixer_write(chip, 0x56, 0x95);
438 	snd_es1938_mixer_write(chip, 0x58, 0x94);
439 	snd_es1938_mixer_write(chip, 0x5a, 0x80);
440 }
441 
442 /* --------------------------------------------------------------------
443  * Reset the FIFOs
444  * --------------------------------------------------------------------*/
445 static void snd_es1938_reset_fifo(struct es1938 *chip)
446 {
447 	outb(2, SLSB_REG(chip, RESET));
448 	outb(0, SLSB_REG(chip, RESET));
449 }
450 
451 static struct snd_ratnum clocks[2] = {
452 	{
453 		.num = 793800,
454 		.den_min = 1,
455 		.den_max = 128,
456 		.den_step = 1,
457 	},
458 	{
459 		.num = 768000,
460 		.den_min = 1,
461 		.den_max = 128,
462 		.den_step = 1,
463 	}
464 };
465 
466 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
467 	.nrats = 2,
468 	.rats = clocks,
469 };
470 
471 
472 static void snd_es1938_rate_set(struct es1938 *chip,
473 				struct snd_pcm_substream *substream,
474 				int mode)
475 {
476 	unsigned int bits, div0;
477 	struct snd_pcm_runtime *runtime = substream->runtime;
478 	if (runtime->rate_num == clocks[0].num)
479 		bits = 128 - runtime->rate_den;
480 	else
481 		bits = 256 - runtime->rate_den;
482 
483 	/* set filter register */
484 	div0 = 256 - 7160000*20/(8*82*runtime->rate);
485 
486 	if (mode == DAC2) {
487 		snd_es1938_mixer_write(chip, 0x70, bits);
488 		snd_es1938_mixer_write(chip, 0x72, div0);
489 	} else {
490 		snd_es1938_write(chip, 0xA1, bits);
491 		snd_es1938_write(chip, 0xA2, div0);
492 	}
493 }
494 
495 /* --------------------------------------------------------------------
496  * Configure Solo1 builtin DMA Controller
497  * --------------------------------------------------------------------*/
498 
499 static void snd_es1938_playback1_setdma(struct es1938 *chip)
500 {
501 	outb(0x00, SLIO_REG(chip, AUDIO2MODE));
502 	outl(chip->dma2_start, SLIO_REG(chip, AUDIO2DMAADDR));
503 	outw(0, SLIO_REG(chip, AUDIO2DMACOUNT));
504 	outw(chip->dma2_size, SLIO_REG(chip, AUDIO2DMACOUNT));
505 }
506 
507 static void snd_es1938_playback2_setdma(struct es1938 *chip)
508 {
509 	/* Enable DMA controller */
510 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
511 	/* 1. Master reset */
512 	outb(0, SLDM_REG(chip, DMACLEAR));
513 	/* 2. Mask DMA */
514 	outb(1, SLDM_REG(chip, DMAMASK));
515 	outb(0x18, SLDM_REG(chip, DMAMODE));
516 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
517 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
518 	/* 3. Unmask DMA */
519 	outb(0, SLDM_REG(chip, DMAMASK));
520 }
521 
522 static void snd_es1938_capture_setdma(struct es1938 *chip)
523 {
524 	/* Enable DMA controller */
525 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
526 	/* 1. Master reset */
527 	outb(0, SLDM_REG(chip, DMACLEAR));
528 	/* 2. Mask DMA */
529 	outb(1, SLDM_REG(chip, DMAMASK));
530 	outb(0x14, SLDM_REG(chip, DMAMODE));
531 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
532 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
533 	/* 3. Unmask DMA */
534 	outb(0, SLDM_REG(chip, DMAMASK));
535 }
536 
537 /* ----------------------------------------------------------------------
538  *
539  *                           *** PCM part ***
540  */
541 
542 static int snd_es1938_capture_trigger(struct snd_pcm_substream *substream,
543 				      int cmd)
544 {
545 	struct es1938 *chip = snd_pcm_substream_chip(substream);
546 	int val;
547 	switch (cmd) {
548 	case SNDRV_PCM_TRIGGER_START:
549 	case SNDRV_PCM_TRIGGER_RESUME:
550 		val = 0x0f;
551 		chip->active |= ADC1;
552 		break;
553 	case SNDRV_PCM_TRIGGER_STOP:
554 	case SNDRV_PCM_TRIGGER_SUSPEND:
555 		val = 0x00;
556 		chip->active &= ~ADC1;
557 		break;
558 	default:
559 		return -EINVAL;
560 	}
561 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
562 	return 0;
563 }
564 
565 static int snd_es1938_playback1_trigger(struct snd_pcm_substream *substream,
566 					int cmd)
567 {
568 	struct es1938 *chip = snd_pcm_substream_chip(substream);
569 	switch (cmd) {
570 	case SNDRV_PCM_TRIGGER_START:
571 	case SNDRV_PCM_TRIGGER_RESUME:
572 		/* According to the documentation this should be:
573 		   0x13 but that value may randomly swap stereo channels */
574                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x92);
575                 udelay(10);
576 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x93);
577                 /* This two stage init gives the FIFO -> DAC connection time to
578                  * settle before first data from DMA flows in.  This should ensure
579                  * no swapping of stereo channels.  Report a bug if otherwise :-) */
580 		outb(0x0a, SLIO_REG(chip, AUDIO2MODE));
581 		chip->active |= DAC2;
582 		break;
583 	case SNDRV_PCM_TRIGGER_STOP:
584 	case SNDRV_PCM_TRIGGER_SUSPEND:
585 		outb(0, SLIO_REG(chip, AUDIO2MODE));
586 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0);
587 		chip->active &= ~DAC2;
588 		break;
589 	default:
590 		return -EINVAL;
591 	}
592 	return 0;
593 }
594 
595 static int snd_es1938_playback2_trigger(struct snd_pcm_substream *substream,
596 					int cmd)
597 {
598 	struct es1938 *chip = snd_pcm_substream_chip(substream);
599 	int val;
600 	switch (cmd) {
601 	case SNDRV_PCM_TRIGGER_START:
602 	case SNDRV_PCM_TRIGGER_RESUME:
603 		val = 5;
604 		chip->active |= DAC1;
605 		break;
606 	case SNDRV_PCM_TRIGGER_STOP:
607 	case SNDRV_PCM_TRIGGER_SUSPEND:
608 		val = 0;
609 		chip->active &= ~DAC1;
610 		break;
611 	default:
612 		return -EINVAL;
613 	}
614 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
615 	return 0;
616 }
617 
618 static int snd_es1938_playback_trigger(struct snd_pcm_substream *substream,
619 				       int cmd)
620 {
621 	switch (substream->number) {
622 	case 0:
623 		return snd_es1938_playback1_trigger(substream, cmd);
624 	case 1:
625 		return snd_es1938_playback2_trigger(substream, cmd);
626 	}
627 	snd_BUG();
628 	return -EINVAL;
629 }
630 
631 /* --------------------------------------------------------------------
632  * First channel for Extended Mode Audio 1 ADC Operation
633  * --------------------------------------------------------------------*/
634 static int snd_es1938_capture_prepare(struct snd_pcm_substream *substream)
635 {
636 	struct es1938 *chip = snd_pcm_substream_chip(substream);
637 	struct snd_pcm_runtime *runtime = substream->runtime;
638 	int u, is8, mono;
639 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
640 	unsigned int count = snd_pcm_lib_period_bytes(substream);
641 
642 	chip->dma1_size = size;
643 	chip->dma1_start = runtime->dma_addr;
644 
645 	mono = (runtime->channels > 1) ? 0 : 1;
646 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
647 	u = snd_pcm_format_unsigned(runtime->format);
648 
649 	chip->dma1_shift = 2 - mono - is8;
650 
651 	snd_es1938_reset_fifo(chip);
652 
653 	/* program type */
654 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
655 
656 	/* set clock and counters */
657         snd_es1938_rate_set(chip, substream, ADC1);
658 
659 	count = 0x10000 - count;
660 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
661 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
662 
663 	/* initialize and configure ADC */
664 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, u ? 0x51 : 0x71);
665 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, 0x90 |
666 		       (u ? 0x00 : 0x20) |
667 		       (is8 ? 0x00 : 0x04) |
668 		       (mono ? 0x40 : 0x08));
669 
670 	//	snd_es1938_reset_fifo(chip);
671 
672 	/* 11. configure system interrupt controller and DMA controller */
673 	snd_es1938_capture_setdma(chip);
674 
675 	return 0;
676 }
677 
678 
679 /* ------------------------------------------------------------------------------
680  * Second Audio channel DAC Operation
681  * ------------------------------------------------------------------------------*/
682 static int snd_es1938_playback1_prepare(struct snd_pcm_substream *substream)
683 {
684 	struct es1938 *chip = snd_pcm_substream_chip(substream);
685 	struct snd_pcm_runtime *runtime = substream->runtime;
686 	int u, is8, mono;
687 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
688 	unsigned int count = snd_pcm_lib_period_bytes(substream);
689 
690 	chip->dma2_size = size;
691 	chip->dma2_start = runtime->dma_addr;
692 
693 	mono = (runtime->channels > 1) ? 0 : 1;
694 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
695 	u = snd_pcm_format_unsigned(runtime->format);
696 
697 	chip->dma2_shift = 2 - mono - is8;
698 
699         snd_es1938_reset_fifo(chip);
700 
701 	/* set clock and counters */
702         snd_es1938_rate_set(chip, substream, DAC2);
703 
704 	count >>= 1;
705 	count = 0x10000 - count;
706 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTL, count & 0xff);
707 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTH, count >> 8);
708 
709 	/* initialize and configure Audio 2 DAC */
710 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x40 | (u ? 0 : 4) |
711 			       (mono ? 0 : 2) | (is8 ? 0 : 1));
712 
713 	/* program DMA */
714 	snd_es1938_playback1_setdma(chip);
715 
716 	return 0;
717 }
718 
719 static int snd_es1938_playback2_prepare(struct snd_pcm_substream *substream)
720 {
721 	struct es1938 *chip = snd_pcm_substream_chip(substream);
722 	struct snd_pcm_runtime *runtime = substream->runtime;
723 	int u, is8, mono;
724 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
725 	unsigned int count = snd_pcm_lib_period_bytes(substream);
726 
727 	chip->dma1_size = size;
728 	chip->dma1_start = runtime->dma_addr;
729 
730 	mono = (runtime->channels > 1) ? 0 : 1;
731 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
732 	u = snd_pcm_format_unsigned(runtime->format);
733 
734 	chip->dma1_shift = 2 - mono - is8;
735 
736 	count = 0x10000 - count;
737 
738 	/* reset */
739 	snd_es1938_reset_fifo(chip);
740 
741 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
742 
743 	/* set clock and counters */
744         snd_es1938_rate_set(chip, substream, DAC1);
745 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
746 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
747 
748 	/* initialized and configure DAC */
749         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x80 : 0x00);
750         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x51 : 0x71);
751         snd_es1938_write(chip, ESS_CMD_SETFORMAT2,
752 			 0x90 | (mono ? 0x40 : 0x08) |
753 			 (is8 ? 0x00 : 0x04) | (u ? 0x00 : 0x20));
754 
755 	/* program DMA */
756 	snd_es1938_playback2_setdma(chip);
757 
758 	return 0;
759 }
760 
761 static int snd_es1938_playback_prepare(struct snd_pcm_substream *substream)
762 {
763 	switch (substream->number) {
764 	case 0:
765 		return snd_es1938_playback1_prepare(substream);
766 	case 1:
767 		return snd_es1938_playback2_prepare(substream);
768 	}
769 	snd_BUG();
770 	return -EINVAL;
771 }
772 
773 static snd_pcm_uframes_t snd_es1938_capture_pointer(struct snd_pcm_substream *substream)
774 {
775 	struct es1938 *chip = snd_pcm_substream_chip(substream);
776 	size_t ptr;
777 	size_t old, new;
778 #if 1
779 	/* This stuff is *needed*, don't ask why - AB */
780 	old = inw(SLDM_REG(chip, DMACOUNT));
781 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
782 		old = new;
783 	ptr = chip->dma1_size - 1 - new;
784 #else
785 	ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
786 #endif
787 	return ptr >> chip->dma1_shift;
788 }
789 
790 static snd_pcm_uframes_t snd_es1938_playback1_pointer(struct snd_pcm_substream *substream)
791 {
792 	struct es1938 *chip = snd_pcm_substream_chip(substream);
793 	size_t ptr;
794 #if 1
795 	ptr = chip->dma2_size - inw(SLIO_REG(chip, AUDIO2DMACOUNT));
796 #else
797 	ptr = inl(SLIO_REG(chip, AUDIO2DMAADDR)) - chip->dma2_start;
798 #endif
799 	return ptr >> chip->dma2_shift;
800 }
801 
802 static snd_pcm_uframes_t snd_es1938_playback2_pointer(struct snd_pcm_substream *substream)
803 {
804 	struct es1938 *chip = snd_pcm_substream_chip(substream);
805 	size_t ptr;
806 	size_t old, new;
807 #if 1
808 	/* This stuff is *needed*, don't ask why - AB */
809 	old = inw(SLDM_REG(chip, DMACOUNT));
810 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
811 		old = new;
812 	ptr = chip->dma1_size - 1 - new;
813 #else
814 	ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
815 #endif
816 	return ptr >> chip->dma1_shift;
817 }
818 
819 static snd_pcm_uframes_t snd_es1938_playback_pointer(struct snd_pcm_substream *substream)
820 {
821 	switch (substream->number) {
822 	case 0:
823 		return snd_es1938_playback1_pointer(substream);
824 	case 1:
825 		return snd_es1938_playback2_pointer(substream);
826 	}
827 	snd_BUG();
828 	return -EINVAL;
829 }
830 
831 static int snd_es1938_capture_copy(struct snd_pcm_substream *substream,
832 				   int channel,
833 				   snd_pcm_uframes_t pos,
834 				   void __user *dst,
835 				   snd_pcm_uframes_t count)
836 {
837 	struct snd_pcm_runtime *runtime = substream->runtime;
838 	struct es1938 *chip = snd_pcm_substream_chip(substream);
839 	pos <<= chip->dma1_shift;
840 	count <<= chip->dma1_shift;
841 	snd_assert(pos + count <= chip->dma1_size, return -EINVAL);
842 	if (pos + count < chip->dma1_size) {
843 		if (copy_to_user(dst, runtime->dma_area + pos + 1, count))
844 			return -EFAULT;
845 	} else {
846 		if (copy_to_user(dst, runtime->dma_area + pos + 1, count - 1))
847 			return -EFAULT;
848 		if (put_user(runtime->dma_area[0], ((unsigned char __user *)dst) + count - 1))
849 			return -EFAULT;
850 	}
851 	return 0;
852 }
853 
854 /*
855  * buffer management
856  */
857 static int snd_es1938_pcm_hw_params(struct snd_pcm_substream *substream,
858 				    struct snd_pcm_hw_params *hw_params)
859 
860 {
861 	int err;
862 
863 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
864 		return err;
865 	return 0;
866 }
867 
868 static int snd_es1938_pcm_hw_free(struct snd_pcm_substream *substream)
869 {
870 	return snd_pcm_lib_free_pages(substream);
871 }
872 
873 /* ----------------------------------------------------------------------
874  * Audio1 Capture (ADC)
875  * ----------------------------------------------------------------------*/
876 static struct snd_pcm_hardware snd_es1938_capture =
877 {
878 	.info =			(SNDRV_PCM_INFO_INTERLEAVED |
879 				SNDRV_PCM_INFO_BLOCK_TRANSFER),
880 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
881 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
882 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
883 	.rate_min =		6000,
884 	.rate_max =		48000,
885 	.channels_min =		1,
886 	.channels_max =		2,
887         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
888 	.period_bytes_min =	64,
889 	.period_bytes_max =	0x8000,
890 	.periods_min =		1,
891 	.periods_max =		1024,
892 	.fifo_size =		256,
893 };
894 
895 /* -----------------------------------------------------------------------
896  * Audio2 Playback (DAC)
897  * -----------------------------------------------------------------------*/
898 static struct snd_pcm_hardware snd_es1938_playback =
899 {
900 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
901 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
902 				 SNDRV_PCM_INFO_MMAP_VALID),
903 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
904 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
905 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
906 	.rate_min =		6000,
907 	.rate_max =		48000,
908 	.channels_min =		1,
909 	.channels_max =		2,
910         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
911 	.period_bytes_min =	64,
912 	.period_bytes_max =	0x8000,
913 	.periods_min =		1,
914 	.periods_max =		1024,
915 	.fifo_size =		256,
916 };
917 
918 static int snd_es1938_capture_open(struct snd_pcm_substream *substream)
919 {
920 	struct es1938 *chip = snd_pcm_substream_chip(substream);
921 	struct snd_pcm_runtime *runtime = substream->runtime;
922 
923 	if (chip->playback2_substream)
924 		return -EAGAIN;
925 	chip->capture_substream = substream;
926 	runtime->hw = snd_es1938_capture;
927 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
928 				      &hw_constraints_clocks);
929 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
930 	return 0;
931 }
932 
933 static int snd_es1938_playback_open(struct snd_pcm_substream *substream)
934 {
935 	struct es1938 *chip = snd_pcm_substream_chip(substream);
936 	struct snd_pcm_runtime *runtime = substream->runtime;
937 
938 	switch (substream->number) {
939 	case 0:
940 		chip->playback1_substream = substream;
941 		break;
942 	case 1:
943 		if (chip->capture_substream)
944 			return -EAGAIN;
945 		chip->playback2_substream = substream;
946 		break;
947 	default:
948 		snd_BUG();
949 		return -EINVAL;
950 	}
951 	runtime->hw = snd_es1938_playback;
952 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
953 				      &hw_constraints_clocks);
954 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
955 	return 0;
956 }
957 
958 static int snd_es1938_capture_close(struct snd_pcm_substream *substream)
959 {
960 	struct es1938 *chip = snd_pcm_substream_chip(substream);
961 
962 	chip->capture_substream = NULL;
963 	return 0;
964 }
965 
966 static int snd_es1938_playback_close(struct snd_pcm_substream *substream)
967 {
968 	struct es1938 *chip = snd_pcm_substream_chip(substream);
969 
970 	switch (substream->number) {
971 	case 0:
972 		chip->playback1_substream = NULL;
973 		break;
974 	case 1:
975 		chip->playback2_substream = NULL;
976 		break;
977 	default:
978 		snd_BUG();
979 		return -EINVAL;
980 	}
981 	return 0;
982 }
983 
984 static struct snd_pcm_ops snd_es1938_playback_ops = {
985 	.open =		snd_es1938_playback_open,
986 	.close =	snd_es1938_playback_close,
987 	.ioctl =	snd_pcm_lib_ioctl,
988 	.hw_params =	snd_es1938_pcm_hw_params,
989 	.hw_free =	snd_es1938_pcm_hw_free,
990 	.prepare =	snd_es1938_playback_prepare,
991 	.trigger =	snd_es1938_playback_trigger,
992 	.pointer =	snd_es1938_playback_pointer,
993 };
994 
995 static struct snd_pcm_ops snd_es1938_capture_ops = {
996 	.open =		snd_es1938_capture_open,
997 	.close =	snd_es1938_capture_close,
998 	.ioctl =	snd_pcm_lib_ioctl,
999 	.hw_params =	snd_es1938_pcm_hw_params,
1000 	.hw_free =	snd_es1938_pcm_hw_free,
1001 	.prepare =	snd_es1938_capture_prepare,
1002 	.trigger =	snd_es1938_capture_trigger,
1003 	.pointer =	snd_es1938_capture_pointer,
1004 	.copy =		snd_es1938_capture_copy,
1005 };
1006 
1007 static int __devinit snd_es1938_new_pcm(struct es1938 *chip, int device)
1008 {
1009 	struct snd_pcm *pcm;
1010 	int err;
1011 
1012 	if ((err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm)) < 0)
1013 		return err;
1014 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1938_playback_ops);
1015 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1938_capture_ops);
1016 
1017 	pcm->private_data = chip;
1018 	pcm->info_flags = 0;
1019 	strcpy(pcm->name, "ESS Solo-1");
1020 
1021 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1022 					      snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1023 
1024 	chip->pcm = pcm;
1025 	return 0;
1026 }
1027 
1028 /* -------------------------------------------------------------------
1029  *
1030  *                       *** Mixer part ***
1031  */
1032 
1033 static int snd_es1938_info_mux(struct snd_kcontrol *kcontrol,
1034 			       struct snd_ctl_elem_info *uinfo)
1035 {
1036 	static char *texts[8] = {
1037 		"Mic", "Mic Master", "CD", "AOUT",
1038 		"Mic1", "Mix", "Line", "Master"
1039 	};
1040 
1041 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1042 	uinfo->count = 1;
1043 	uinfo->value.enumerated.items = 8;
1044 	if (uinfo->value.enumerated.item > 7)
1045 		uinfo->value.enumerated.item = 7;
1046 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1047 	return 0;
1048 }
1049 
1050 static int snd_es1938_get_mux(struct snd_kcontrol *kcontrol,
1051 			      struct snd_ctl_elem_value *ucontrol)
1052 {
1053 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1054 	ucontrol->value.enumerated.item[0] = snd_es1938_mixer_read(chip, 0x1c) & 0x07;
1055 	return 0;
1056 }
1057 
1058 static int snd_es1938_put_mux(struct snd_kcontrol *kcontrol,
1059 			      struct snd_ctl_elem_value *ucontrol)
1060 {
1061 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1062 	unsigned char val = ucontrol->value.enumerated.item[0];
1063 
1064 	if (val > 7)
1065 		return -EINVAL;
1066 	return snd_es1938_mixer_bits(chip, 0x1c, 0x07, val) != val;
1067 }
1068 
1069 static int snd_es1938_info_spatializer_enable(struct snd_kcontrol *kcontrol,
1070 					      struct snd_ctl_elem_info *uinfo)
1071 {
1072 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1073 	uinfo->count = 1;
1074 	uinfo->value.integer.min = 0;
1075 	uinfo->value.integer.max = 1;
1076 	return 0;
1077 }
1078 
1079 static int snd_es1938_get_spatializer_enable(struct snd_kcontrol *kcontrol,
1080 					     struct snd_ctl_elem_value *ucontrol)
1081 {
1082 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1083 	unsigned char val = snd_es1938_mixer_read(chip, 0x50);
1084 	ucontrol->value.integer.value[0] = !!(val & 8);
1085 	return 0;
1086 }
1087 
1088 static int snd_es1938_put_spatializer_enable(struct snd_kcontrol *kcontrol,
1089 					     struct snd_ctl_elem_value *ucontrol)
1090 {
1091 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1092 	unsigned char oval, nval;
1093 	int change;
1094 	nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
1095 	oval = snd_es1938_mixer_read(chip, 0x50) & 0x0c;
1096 	change = nval != oval;
1097 	if (change) {
1098 		snd_es1938_mixer_write(chip, 0x50, nval & ~0x04);
1099 		snd_es1938_mixer_write(chip, 0x50, nval);
1100 	}
1101 	return change;
1102 }
1103 
1104 static int snd_es1938_info_hw_volume(struct snd_kcontrol *kcontrol,
1105 				     struct snd_ctl_elem_info *uinfo)
1106 {
1107 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1108 	uinfo->count = 2;
1109 	uinfo->value.integer.min = 0;
1110 	uinfo->value.integer.max = 63;
1111 	return 0;
1112 }
1113 
1114 static int snd_es1938_get_hw_volume(struct snd_kcontrol *kcontrol,
1115 				    struct snd_ctl_elem_value *ucontrol)
1116 {
1117 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1118 	ucontrol->value.integer.value[0] = snd_es1938_mixer_read(chip, 0x61) & 0x3f;
1119 	ucontrol->value.integer.value[1] = snd_es1938_mixer_read(chip, 0x63) & 0x3f;
1120 	return 0;
1121 }
1122 
1123 static int snd_es1938_info_hw_switch(struct snd_kcontrol *kcontrol,
1124 				     struct snd_ctl_elem_info *uinfo)
1125 {
1126 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1127 	uinfo->count = 2;
1128 	uinfo->value.integer.min = 0;
1129 	uinfo->value.integer.max = 1;
1130 	return 0;
1131 }
1132 
1133 static int snd_es1938_get_hw_switch(struct snd_kcontrol *kcontrol,
1134 				    struct snd_ctl_elem_value *ucontrol)
1135 {
1136 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1137 	ucontrol->value.integer.value[0] = !(snd_es1938_mixer_read(chip, 0x61) & 0x40);
1138 	ucontrol->value.integer.value[1] = !(snd_es1938_mixer_read(chip, 0x63) & 0x40);
1139 	return 0;
1140 }
1141 
1142 static void snd_es1938_hwv_free(struct snd_kcontrol *kcontrol)
1143 {
1144 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1145 	chip->master_volume = NULL;
1146 	chip->master_switch = NULL;
1147 	chip->hw_volume = NULL;
1148 	chip->hw_switch = NULL;
1149 }
1150 
1151 static int snd_es1938_reg_bits(struct es1938 *chip, unsigned char reg,
1152 			       unsigned char mask, unsigned char val)
1153 {
1154 	if (reg < 0xa0)
1155 		return snd_es1938_mixer_bits(chip, reg, mask, val);
1156 	else
1157 		return snd_es1938_bits(chip, reg, mask, val);
1158 }
1159 
1160 static int snd_es1938_reg_read(struct es1938 *chip, unsigned char reg)
1161 {
1162 	if (reg < 0xa0)
1163 		return snd_es1938_mixer_read(chip, reg);
1164 	else
1165 		return snd_es1938_read(chip, reg);
1166 }
1167 
1168 #define ES1938_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv)    \
1169 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1170   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1171   .name = xname, .index = xindex, \
1172   .info = snd_es1938_info_single, \
1173   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1174   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24), \
1175   .tlv = { .p = xtlv } }
1176 #define ES1938_SINGLE(xname, xindex, reg, shift, mask, invert) \
1177 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1178   .info = snd_es1938_info_single, \
1179   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1180   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1181 
1182 static int snd_es1938_info_single(struct snd_kcontrol *kcontrol,
1183 				  struct snd_ctl_elem_info *uinfo)
1184 {
1185 	int mask = (kcontrol->private_value >> 16) & 0xff;
1186 
1187 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1188 	uinfo->count = 1;
1189 	uinfo->value.integer.min = 0;
1190 	uinfo->value.integer.max = mask;
1191 	return 0;
1192 }
1193 
1194 static int snd_es1938_get_single(struct snd_kcontrol *kcontrol,
1195 				 struct snd_ctl_elem_value *ucontrol)
1196 {
1197 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1198 	int reg = kcontrol->private_value & 0xff;
1199 	int shift = (kcontrol->private_value >> 8) & 0xff;
1200 	int mask = (kcontrol->private_value >> 16) & 0xff;
1201 	int invert = (kcontrol->private_value >> 24) & 0xff;
1202 	int val;
1203 
1204 	val = snd_es1938_reg_read(chip, reg);
1205 	ucontrol->value.integer.value[0] = (val >> shift) & mask;
1206 	if (invert)
1207 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1208 	return 0;
1209 }
1210 
1211 static int snd_es1938_put_single(struct snd_kcontrol *kcontrol,
1212 				 struct snd_ctl_elem_value *ucontrol)
1213 {
1214 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1215 	int reg = kcontrol->private_value & 0xff;
1216 	int shift = (kcontrol->private_value >> 8) & 0xff;
1217 	int mask = (kcontrol->private_value >> 16) & 0xff;
1218 	int invert = (kcontrol->private_value >> 24) & 0xff;
1219 	unsigned char val;
1220 
1221 	val = (ucontrol->value.integer.value[0] & mask);
1222 	if (invert)
1223 		val = mask - val;
1224 	mask <<= shift;
1225 	val <<= shift;
1226 	return snd_es1938_reg_bits(chip, reg, mask, val) != val;
1227 }
1228 
1229 #define ES1938_DOUBLE_TLV(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert, xtlv) \
1230 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1231   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1232   .name = xname, .index = xindex, \
1233   .info = snd_es1938_info_double, \
1234   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1235   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22), \
1236   .tlv = { .p = xtlv } }
1237 #define ES1938_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1238 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1239   .info = snd_es1938_info_double, \
1240   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1241   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1242 
1243 static int snd_es1938_info_double(struct snd_kcontrol *kcontrol,
1244 				  struct snd_ctl_elem_info *uinfo)
1245 {
1246 	int mask = (kcontrol->private_value >> 24) & 0xff;
1247 
1248 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1249 	uinfo->count = 2;
1250 	uinfo->value.integer.min = 0;
1251 	uinfo->value.integer.max = mask;
1252 	return 0;
1253 }
1254 
1255 static int snd_es1938_get_double(struct snd_kcontrol *kcontrol,
1256 				 struct snd_ctl_elem_value *ucontrol)
1257 {
1258 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1259 	int left_reg = kcontrol->private_value & 0xff;
1260 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1261 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1262 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1263 	int mask = (kcontrol->private_value >> 24) & 0xff;
1264 	int invert = (kcontrol->private_value >> 22) & 1;
1265 	unsigned char left, right;
1266 
1267 	left = snd_es1938_reg_read(chip, left_reg);
1268 	if (left_reg != right_reg)
1269 		right = snd_es1938_reg_read(chip, right_reg);
1270 	else
1271 		right = left;
1272 	ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1273 	ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1274 	if (invert) {
1275 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1276 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1277 	}
1278 	return 0;
1279 }
1280 
1281 static int snd_es1938_put_double(struct snd_kcontrol *kcontrol,
1282 				 struct snd_ctl_elem_value *ucontrol)
1283 {
1284 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1285 	int left_reg = kcontrol->private_value & 0xff;
1286 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1287 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1288 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1289 	int mask = (kcontrol->private_value >> 24) & 0xff;
1290 	int invert = (kcontrol->private_value >> 22) & 1;
1291 	int change;
1292 	unsigned char val1, val2, mask1, mask2;
1293 
1294 	val1 = ucontrol->value.integer.value[0] & mask;
1295 	val2 = ucontrol->value.integer.value[1] & mask;
1296 	if (invert) {
1297 		val1 = mask - val1;
1298 		val2 = mask - val2;
1299 	}
1300 	val1 <<= shift_left;
1301 	val2 <<= shift_right;
1302 	mask1 = mask << shift_left;
1303 	mask2 = mask << shift_right;
1304 	if (left_reg != right_reg) {
1305 		change = 0;
1306 		if (snd_es1938_reg_bits(chip, left_reg, mask1, val1) != val1)
1307 			change = 1;
1308 		if (snd_es1938_reg_bits(chip, right_reg, mask2, val2) != val2)
1309 			change = 1;
1310 	} else {
1311 		change = (snd_es1938_reg_bits(chip, left_reg, mask1 | mask2,
1312 					      val1 | val2) != (val1 | val2));
1313 	}
1314 	return change;
1315 }
1316 
1317 static unsigned int db_scale_master[] = {
1318 	TLV_DB_RANGE_HEAD(2),
1319 	0, 54, TLV_DB_SCALE_ITEM(-3600, 50, 1),
1320 	54, 63, TLV_DB_SCALE_ITEM(-900, 100, 0),
1321 };
1322 
1323 static unsigned int db_scale_audio1[] = {
1324 	TLV_DB_RANGE_HEAD(2),
1325 	0, 8, TLV_DB_SCALE_ITEM(-3300, 300, 1),
1326 	8, 15, TLV_DB_SCALE_ITEM(-900, 150, 0),
1327 };
1328 
1329 static unsigned int db_scale_audio2[] = {
1330 	TLV_DB_RANGE_HEAD(2),
1331 	0, 8, TLV_DB_SCALE_ITEM(-3450, 300, 1),
1332 	8, 15, TLV_DB_SCALE_ITEM(-1050, 150, 0),
1333 };
1334 
1335 static unsigned int db_scale_mic[] = {
1336 	TLV_DB_RANGE_HEAD(2),
1337 	0, 8, TLV_DB_SCALE_ITEM(-2400, 300, 1),
1338 	8, 15, TLV_DB_SCALE_ITEM(0, 150, 0),
1339 };
1340 
1341 static unsigned int db_scale_line[] = {
1342 	TLV_DB_RANGE_HEAD(2),
1343 	0, 8, TLV_DB_SCALE_ITEM(-3150, 300, 1),
1344 	8, 15, TLV_DB_SCALE_ITEM(-750, 150, 0),
1345 };
1346 
1347 static DECLARE_TLV_DB_SCALE(db_scale_capture, 0, 150, 0);
1348 
1349 static struct snd_kcontrol_new snd_es1938_controls[] = {
1350 ES1938_DOUBLE_TLV("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0,
1351 		  db_scale_master),
1352 ES1938_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1353 {
1354 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1355 	.name = "Hardware Master Playback Volume",
1356 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1357 	.info = snd_es1938_info_hw_volume,
1358 	.get = snd_es1938_get_hw_volume,
1359 },
1360 {
1361 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1362 	.access = (SNDRV_CTL_ELEM_ACCESS_READ |
1363 		   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1364 	.name = "Hardware Master Playback Switch",
1365 	.info = snd_es1938_info_hw_switch,
1366 	.get = snd_es1938_get_hw_switch,
1367 	.tlv = { .p = db_scale_master },
1368 },
1369 ES1938_SINGLE("Hardware Volume Split", 0, 0x64, 7, 1, 0),
1370 ES1938_DOUBLE_TLV("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0,
1371 		  db_scale_line),
1372 ES1938_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1373 ES1938_DOUBLE_TLV("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0,
1374 		  db_scale_mic),
1375 ES1938_DOUBLE_TLV("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1376 		  db_scale_line),
1377 ES1938_DOUBLE_TLV("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0,
1378 		  db_scale_mic),
1379 ES1938_DOUBLE_TLV("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0,
1380 		  db_scale_line),
1381 ES1938_DOUBLE_TLV("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0,
1382 		  db_scale_capture),
1383 ES1938_SINGLE("PC Speaker Volume", 0, 0x3c, 0, 7, 0),
1384 ES1938_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1385 ES1938_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1386 {
1387 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1388 	.name = "Capture Source",
1389 	.info = snd_es1938_info_mux,
1390 	.get = snd_es1938_get_mux,
1391 	.put = snd_es1938_put_mux,
1392 },
1393 ES1938_DOUBLE_TLV("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1394 		  db_scale_line),
1395 ES1938_DOUBLE_TLV("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0,
1396 		  db_scale_audio2),
1397 ES1938_DOUBLE_TLV("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0,
1398 		  db_scale_mic),
1399 ES1938_DOUBLE_TLV("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0,
1400 		  db_scale_line),
1401 ES1938_DOUBLE_TLV("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0,
1402 		  db_scale_mic),
1403 ES1938_DOUBLE_TLV("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0,
1404 		  db_scale_line),
1405 ES1938_DOUBLE_TLV("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0,
1406 		  db_scale_line),
1407 ES1938_DOUBLE_TLV("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0,
1408 		  db_scale_line),
1409 ES1938_DOUBLE_TLV("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0,
1410 		  db_scale_audio2),
1411 ES1938_DOUBLE_TLV("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0,
1412 		  db_scale_audio1),
1413 ES1938_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1414 {
1415 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1416 	.name = "3D Control - Switch",
1417 	.info = snd_es1938_info_spatializer_enable,
1418 	.get = snd_es1938_get_spatializer_enable,
1419 	.put = snd_es1938_put_spatializer_enable,
1420 },
1421 ES1938_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0)
1422 };
1423 
1424 
1425 /* ---------------------------------------------------------------------------- */
1426 /* ---------------------------------------------------------------------------- */
1427 
1428 /*
1429  * initialize the chip - used by resume callback, too
1430  */
1431 static void snd_es1938_chip_init(struct es1938 *chip)
1432 {
1433 	/* reset chip */
1434 	snd_es1938_reset(chip);
1435 
1436 	/* configure native mode */
1437 
1438 	/* enable bus master */
1439 	pci_set_master(chip->pci);
1440 
1441 	/* disable legacy audio */
1442 	pci_write_config_word(chip->pci, SL_PCI_LEGACYCONTROL, 0x805f);
1443 
1444 	/* set DDMA base */
1445 	pci_write_config_word(chip->pci, SL_PCI_DDMACONTROL, chip->ddma_port | 1);
1446 
1447 	/* set DMA/IRQ policy */
1448 	pci_write_config_dword(chip->pci, SL_PCI_CONFIG, 0);
1449 
1450 	/* enable Audio 1, Audio 2, MPU401 IRQ and HW volume IRQ*/
1451 	outb(0xf0, SLIO_REG(chip, IRQCONTROL));
1452 
1453 	/* reset DMA */
1454 	outb(0, SLDM_REG(chip, DMACLEAR));
1455 }
1456 
1457 #ifdef CONFIG_PM
1458 /*
1459  * PM support
1460  */
1461 
1462 static unsigned char saved_regs[SAVED_REG_SIZE+1] = {
1463 	0x14, 0x1a, 0x1c, 0x3a, 0x3c, 0x3e, 0x36, 0x38,
1464 	0x50, 0x52, 0x60, 0x61, 0x62, 0x63, 0x64, 0x68,
1465 	0x69, 0x6a, 0x6b, 0x6d, 0x6e, 0x6f, 0x7c, 0x7d,
1466 	0xa8, 0xb4,
1467 };
1468 
1469 
1470 static int es1938_suspend(struct pci_dev *pci, pm_message_t state)
1471 {
1472 	struct snd_card *card = pci_get_drvdata(pci);
1473 	struct es1938 *chip = card->private_data;
1474 	unsigned char *s, *d;
1475 
1476 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1477 	snd_pcm_suspend_all(chip->pcm);
1478 
1479 	/* save mixer-related registers */
1480 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++)
1481 		*d = snd_es1938_reg_read(chip, *s);
1482 
1483 	outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
1484 	if (chip->irq >= 0) {
1485 		synchronize_irq(chip->irq);
1486 		free_irq(chip->irq, chip);
1487 		chip->irq = -1;
1488 	}
1489 	pci_disable_device(pci);
1490 	pci_save_state(pci);
1491 	pci_set_power_state(pci, pci_choose_state(pci, state));
1492 	return 0;
1493 }
1494 
1495 static int es1938_resume(struct pci_dev *pci)
1496 {
1497 	struct snd_card *card = pci_get_drvdata(pci);
1498 	struct es1938 *chip = card->private_data;
1499 	unsigned char *s, *d;
1500 
1501 	pci_set_power_state(pci, PCI_D0);
1502 	pci_restore_state(pci);
1503 	if (pci_enable_device(pci) < 0) {
1504 		printk(KERN_ERR "es1938: pci_enable_device failed, "
1505 		       "disabling device\n");
1506 		snd_card_disconnect(card);
1507 		return -EIO;
1508 	}
1509 
1510 	if (request_irq(pci->irq, snd_es1938_interrupt,
1511 			IRQF_SHARED, "ES1938", chip)) {
1512 		printk(KERN_ERR "es1938: unable to grab IRQ %d, "
1513 		       "disabling device\n", pci->irq);
1514 		snd_card_disconnect(card);
1515 		return -EIO;
1516 	}
1517 	chip->irq = pci->irq;
1518 	snd_es1938_chip_init(chip);
1519 
1520 	/* restore mixer-related registers */
1521 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++) {
1522 		if (*s < 0xa0)
1523 			snd_es1938_mixer_write(chip, *s, *d);
1524 		else
1525 			snd_es1938_write(chip, *s, *d);
1526 	}
1527 
1528 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1529 	return 0;
1530 }
1531 #endif /* CONFIG_PM */
1532 
1533 #ifdef SUPPORT_JOYSTICK
1534 static int __devinit snd_es1938_create_gameport(struct es1938 *chip)
1535 {
1536 	struct gameport *gp;
1537 
1538 	chip->gameport = gp = gameport_allocate_port();
1539 	if (!gp) {
1540 		printk(KERN_ERR "es1938: cannot allocate memory for gameport\n");
1541 		return -ENOMEM;
1542 	}
1543 
1544 	gameport_set_name(gp, "ES1938");
1545 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1546 	gameport_set_dev_parent(gp, &chip->pci->dev);
1547 	gp->io = chip->game_port;
1548 
1549 	gameport_register_port(gp);
1550 
1551 	return 0;
1552 }
1553 
1554 static void snd_es1938_free_gameport(struct es1938 *chip)
1555 {
1556 	if (chip->gameport) {
1557 		gameport_unregister_port(chip->gameport);
1558 		chip->gameport = NULL;
1559 	}
1560 }
1561 #else
1562 static inline int snd_es1938_create_gameport(struct es1938 *chip) { return -ENOSYS; }
1563 static inline void snd_es1938_free_gameport(struct es1938 *chip) { }
1564 #endif /* SUPPORT_JOYSTICK */
1565 
1566 static int snd_es1938_free(struct es1938 *chip)
1567 {
1568 	/* disable irqs */
1569 	outb(0x00, SLIO_REG(chip, IRQCONTROL));
1570 	if (chip->rmidi)
1571 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
1572 
1573 	snd_es1938_free_gameport(chip);
1574 
1575 	if (chip->irq >= 0) {
1576 		synchronize_irq(chip->irq);
1577 		free_irq(chip->irq, chip);
1578 	}
1579 	pci_release_regions(chip->pci);
1580 	pci_disable_device(chip->pci);
1581 	kfree(chip);
1582 	return 0;
1583 }
1584 
1585 static int snd_es1938_dev_free(struct snd_device *device)
1586 {
1587 	struct es1938 *chip = device->device_data;
1588 	return snd_es1938_free(chip);
1589 }
1590 
1591 static int __devinit snd_es1938_create(struct snd_card *card,
1592 				    struct pci_dev * pci,
1593 				    struct es1938 ** rchip)
1594 {
1595 	struct es1938 *chip;
1596 	int err;
1597 	static struct snd_device_ops ops = {
1598 		.dev_free =	snd_es1938_dev_free,
1599 	};
1600 
1601 	*rchip = NULL;
1602 
1603 	/* enable PCI device */
1604 	if ((err = pci_enable_device(pci)) < 0)
1605 		return err;
1606         /* check, if we can restrict PCI DMA transfers to 24 bits */
1607 	if (pci_set_dma_mask(pci, DMA_24BIT_MASK) < 0 ||
1608 	    pci_set_consistent_dma_mask(pci, DMA_24BIT_MASK) < 0) {
1609 		snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
1610 		pci_disable_device(pci);
1611                 return -ENXIO;
1612         }
1613 
1614 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1615 	if (chip == NULL) {
1616 		pci_disable_device(pci);
1617 		return -ENOMEM;
1618 	}
1619 	spin_lock_init(&chip->reg_lock);
1620 	spin_lock_init(&chip->mixer_lock);
1621 	chip->card = card;
1622 	chip->pci = pci;
1623 	chip->irq = -1;
1624 	if ((err = pci_request_regions(pci, "ESS Solo-1")) < 0) {
1625 		kfree(chip);
1626 		pci_disable_device(pci);
1627 		return err;
1628 	}
1629 	chip->io_port = pci_resource_start(pci, 0);
1630 	chip->sb_port = pci_resource_start(pci, 1);
1631 	chip->vc_port = pci_resource_start(pci, 2);
1632 	chip->mpu_port = pci_resource_start(pci, 3);
1633 	chip->game_port = pci_resource_start(pci, 4);
1634 	if (request_irq(pci->irq, snd_es1938_interrupt, IRQF_SHARED,
1635 			"ES1938", chip)) {
1636 		snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1637 		snd_es1938_free(chip);
1638 		return -EBUSY;
1639 	}
1640 	chip->irq = pci->irq;
1641 #ifdef ES1938_DDEBUG
1642 	snd_printk(KERN_DEBUG "create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
1643 		   chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);
1644 #endif
1645 
1646 	chip->ddma_port = chip->vc_port + 0x00;		/* fix from Thomas Sailer */
1647 
1648 	snd_es1938_chip_init(chip);
1649 
1650 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1651 		snd_es1938_free(chip);
1652 		return err;
1653 	}
1654 
1655 	snd_card_set_dev(card, &pci->dev);
1656 
1657 	*rchip = chip;
1658 	return 0;
1659 }
1660 
1661 /* --------------------------------------------------------------------
1662  * Interrupt handler
1663  * -------------------------------------------------------------------- */
1664 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id)
1665 {
1666 	struct es1938 *chip = dev_id;
1667 	unsigned char status, audiostatus;
1668 	int handled = 0;
1669 
1670 	status = inb(SLIO_REG(chip, IRQCONTROL));
1671 #if 0
1672 	printk("Es1938debug - interrupt status: =0x%x\n", status);
1673 #endif
1674 
1675 	/* AUDIO 1 */
1676 	if (status & 0x10) {
1677 #if 0
1678                 printk("Es1938debug - AUDIO channel 1 interrupt\n");
1679 		printk("Es1938debug - AUDIO channel 1 DMAC DMA count: %u\n",
1680 		       inw(SLDM_REG(chip, DMACOUNT)));
1681 		printk("Es1938debug - AUDIO channel 1 DMAC DMA base: %u\n",
1682 		       inl(SLDM_REG(chip, DMAADDR)));
1683 		printk("Es1938debug - AUDIO channel 1 DMAC DMA status: 0x%x\n",
1684 		       inl(SLDM_REG(chip, DMASTATUS)));
1685 #endif
1686 		/* clear irq */
1687 		handled = 1;
1688 		audiostatus = inb(SLSB_REG(chip, STATUS));
1689 		if (chip->active & ADC1)
1690 			snd_pcm_period_elapsed(chip->capture_substream);
1691 		else if (chip->active & DAC1)
1692 			snd_pcm_period_elapsed(chip->playback2_substream);
1693 	}
1694 
1695 	/* AUDIO 2 */
1696 	if (status & 0x20) {
1697 #if 0
1698                 printk("Es1938debug - AUDIO channel 2 interrupt\n");
1699 		printk("Es1938debug - AUDIO channel 2 DMAC DMA count: %u\n",
1700 		       inw(SLIO_REG(chip, AUDIO2DMACOUNT)));
1701 		printk("Es1938debug - AUDIO channel 2 DMAC DMA base: %u\n",
1702 		       inl(SLIO_REG(chip, AUDIO2DMAADDR)));
1703 
1704 #endif
1705 		/* clear irq */
1706 		handled = 1;
1707 		snd_es1938_mixer_bits(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x80, 0);
1708 		if (chip->active & DAC2)
1709 			snd_pcm_period_elapsed(chip->playback1_substream);
1710 	}
1711 
1712 	/* Hardware volume */
1713 	if (status & 0x40) {
1714 		int split = snd_es1938_mixer_read(chip, 0x64) & 0x80;
1715 		handled = 1;
1716 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
1717 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
1718 		if (!split) {
1719 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1720 				       &chip->master_switch->id);
1721 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1722 				       &chip->master_volume->id);
1723 		}
1724 		/* ack interrupt */
1725 		snd_es1938_mixer_write(chip, 0x66, 0x00);
1726 	}
1727 
1728 	/* MPU401 */
1729 	if (status & 0x80) {
1730 		// the following line is evil! It switches off MIDI interrupt handling after the first interrupt received.
1731 		// replacing the last 0 by 0x40 works for ESS-Solo1, but just doing nothing works as well!
1732 		// andreas@flying-snail.de
1733 		// snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0); /* ack? */
1734 		if (chip->rmidi) {
1735 			handled = 1;
1736 			snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1737 		}
1738 	}
1739 	return IRQ_RETVAL(handled);
1740 }
1741 
1742 #define ES1938_DMA_SIZE 64
1743 
1744 static int __devinit snd_es1938_mixer(struct es1938 *chip)
1745 {
1746 	struct snd_card *card;
1747 	unsigned int idx;
1748 	int err;
1749 
1750 	card = chip->card;
1751 
1752 	strcpy(card->mixername, "ESS Solo-1");
1753 
1754 	for (idx = 0; idx < ARRAY_SIZE(snd_es1938_controls); idx++) {
1755 		struct snd_kcontrol *kctl;
1756 		kctl = snd_ctl_new1(&snd_es1938_controls[idx], chip);
1757 		switch (idx) {
1758 			case 0:
1759 				chip->master_volume = kctl;
1760 				kctl->private_free = snd_es1938_hwv_free;
1761 				break;
1762 			case 1:
1763 				chip->master_switch = kctl;
1764 				kctl->private_free = snd_es1938_hwv_free;
1765 				break;
1766 			case 2:
1767 				chip->hw_volume = kctl;
1768 				kctl->private_free = snd_es1938_hwv_free;
1769 				break;
1770 			case 3:
1771 				chip->hw_switch = kctl;
1772 				kctl->private_free = snd_es1938_hwv_free;
1773 				break;
1774 			}
1775 		if ((err = snd_ctl_add(card, kctl)) < 0)
1776 			return err;
1777 	}
1778 	return 0;
1779 }
1780 
1781 
1782 static int __devinit snd_es1938_probe(struct pci_dev *pci,
1783 				      const struct pci_device_id *pci_id)
1784 {
1785 	static int dev;
1786 	struct snd_card *card;
1787 	struct es1938 *chip;
1788 	struct snd_opl3 *opl3;
1789 	int idx, err;
1790 
1791 	if (dev >= SNDRV_CARDS)
1792 		return -ENODEV;
1793 	if (!enable[dev]) {
1794 		dev++;
1795 		return -ENOENT;
1796 	}
1797 
1798 	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1799 	if (card == NULL)
1800 		return -ENOMEM;
1801 	for (idx = 0; idx < 5; idx++) {
1802 		if (pci_resource_start(pci, idx) == 0 ||
1803 		    !(pci_resource_flags(pci, idx) & IORESOURCE_IO)) {
1804 		    	snd_card_free(card);
1805 		    	return -ENODEV;
1806 		}
1807 	}
1808 	if ((err = snd_es1938_create(card, pci, &chip)) < 0) {
1809 		snd_card_free(card);
1810 		return err;
1811 	}
1812 	card->private_data = chip;
1813 
1814 	strcpy(card->driver, "ES1938");
1815 	strcpy(card->shortname, "ESS ES1938 (Solo-1)");
1816 	sprintf(card->longname, "%s rev %i, irq %i",
1817 		card->shortname,
1818 		chip->revision,
1819 		chip->irq);
1820 
1821 	if ((err = snd_es1938_new_pcm(chip, 0)) < 0) {
1822 		snd_card_free(card);
1823 		return err;
1824 	}
1825 	if ((err = snd_es1938_mixer(chip)) < 0) {
1826 		snd_card_free(card);
1827 		return err;
1828 	}
1829 	if (snd_opl3_create(card,
1830 			    SLSB_REG(chip, FMLOWADDR),
1831 			    SLSB_REG(chip, FMHIGHADDR),
1832 			    OPL3_HW_OPL3, 1, &opl3) < 0) {
1833 		printk(KERN_ERR "es1938: OPL3 not detected at 0x%lx\n",
1834 			   SLSB_REG(chip, FMLOWADDR));
1835 	} else {
1836 	        if ((err = snd_opl3_timer_new(opl3, 0, 1)) < 0) {
1837 	                snd_card_free(card);
1838 	                return err;
1839 		}
1840 	        if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1841 	                snd_card_free(card);
1842 	                return err;
1843 		}
1844 	}
1845 	if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
1846 				chip->mpu_port, MPU401_INFO_INTEGRATED,
1847 				chip->irq, 0, &chip->rmidi) < 0) {
1848 		printk(KERN_ERR "es1938: unable to initialize MPU-401\n");
1849 	} else {
1850 		// this line is vital for MIDI interrupt handling on ess-solo1
1851 		// andreas@flying-snail.de
1852 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0x40);
1853 	}
1854 
1855 	snd_es1938_create_gameport(chip);
1856 
1857 	if ((err = snd_card_register(card)) < 0) {
1858 		snd_card_free(card);
1859 		return err;
1860 	}
1861 
1862 	pci_set_drvdata(pci, card);
1863 	dev++;
1864 	return 0;
1865 }
1866 
1867 static void __devexit snd_es1938_remove(struct pci_dev *pci)
1868 {
1869 	snd_card_free(pci_get_drvdata(pci));
1870 	pci_set_drvdata(pci, NULL);
1871 }
1872 
1873 static struct pci_driver driver = {
1874 	.name = "ESS ES1938 (Solo-1)",
1875 	.id_table = snd_es1938_ids,
1876 	.probe = snd_es1938_probe,
1877 	.remove = __devexit_p(snd_es1938_remove),
1878 #ifdef CONFIG_PM
1879 	.suspend = es1938_suspend,
1880 	.resume = es1938_resume,
1881 #endif
1882 };
1883 
1884 static int __init alsa_card_es1938_init(void)
1885 {
1886 	return pci_register_driver(&driver);
1887 }
1888 
1889 static void __exit alsa_card_es1938_exit(void)
1890 {
1891 	pci_unregister_driver(&driver);
1892 }
1893 
1894 module_init(alsa_card_es1938_init)
1895 module_exit(alsa_card_es1938_exit)
1896