xref: /linux/sound/pci/es1938.c (revision 9ce7677cfd7cd871adb457c80bea3b581b839641)
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 <sound/core.h>
59 #include <sound/control.h>
60 #include <sound/pcm.h>
61 #include <sound/opl3.h>
62 #include <sound/mpu401.h>
63 #include <sound/initval.h>
64 
65 #include <asm/io.h>
66 
67 MODULE_AUTHOR("Jaromir Koutek <miri@punknet.cz>");
68 MODULE_DESCRIPTION("ESS Solo-1");
69 MODULE_LICENSE("GPL");
70 MODULE_SUPPORTED_DEVICE("{{ESS,ES1938},"
71                 "{ESS,ES1946},"
72                 "{ESS,ES1969},"
73 		"{TerraTec,128i PCI}}");
74 
75 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
76 #define SUPPORT_JOYSTICK 1
77 #endif
78 
79 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
80 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
81 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
82 
83 module_param_array(index, int, NULL, 0444);
84 MODULE_PARM_DESC(index, "Index value for ESS Solo-1 soundcard.");
85 module_param_array(id, charp, NULL, 0444);
86 MODULE_PARM_DESC(id, "ID string for ESS Solo-1 soundcard.");
87 module_param_array(enable, bool, NULL, 0444);
88 MODULE_PARM_DESC(enable, "Enable ESS Solo-1 soundcard.");
89 
90 #define SLIO_REG(chip, x) ((chip)->io_port + ESSIO_REG_##x)
91 
92 #define SLDM_REG(chip, x) ((chip)->ddma_port + ESSDM_REG_##x)
93 
94 #define SLSB_REG(chip, x) ((chip)->sb_port + ESSSB_REG_##x)
95 
96 #define SL_PCI_LEGACYCONTROL		0x40
97 #define SL_PCI_CONFIG			0x50
98 #define SL_PCI_DDMACONTROL		0x60
99 
100 #define ESSIO_REG_AUDIO2DMAADDR		0
101 #define ESSIO_REG_AUDIO2DMACOUNT	4
102 #define ESSIO_REG_AUDIO2MODE		6
103 #define ESSIO_REG_IRQCONTROL		7
104 
105 #define ESSDM_REG_DMAADDR		0x00
106 #define ESSDM_REG_DMACOUNT		0x04
107 #define ESSDM_REG_DMACOMMAND		0x08
108 #define ESSDM_REG_DMASTATUS		0x08
109 #define ESSDM_REG_DMAMODE		0x0b
110 #define ESSDM_REG_DMACLEAR		0x0d
111 #define ESSDM_REG_DMAMASK		0x0f
112 
113 #define ESSSB_REG_FMLOWADDR		0x00
114 #define ESSSB_REG_FMHIGHADDR		0x02
115 #define ESSSB_REG_MIXERADDR		0x04
116 #define ESSSB_REG_MIXERDATA		0x05
117 
118 #define ESSSB_IREG_AUDIO1		0x14
119 #define ESSSB_IREG_MICMIX		0x1a
120 #define ESSSB_IREG_RECSRC		0x1c
121 #define ESSSB_IREG_MASTER		0x32
122 #define ESSSB_IREG_FM			0x36
123 #define ESSSB_IREG_AUXACD		0x38
124 #define ESSSB_IREG_AUXB			0x3a
125 #define ESSSB_IREG_PCSPEAKER		0x3c
126 #define ESSSB_IREG_LINE			0x3e
127 #define ESSSB_IREG_SPATCONTROL		0x50
128 #define ESSSB_IREG_SPATLEVEL		0x52
129 #define ESSSB_IREG_MASTER_LEFT		0x60
130 #define ESSSB_IREG_MASTER_RIGHT		0x62
131 #define ESSSB_IREG_MPU401CONTROL	0x64
132 #define ESSSB_IREG_MICMIXRECORD		0x68
133 #define ESSSB_IREG_AUDIO2RECORD		0x69
134 #define ESSSB_IREG_AUXACDRECORD		0x6a
135 #define ESSSB_IREG_FMRECORD		0x6b
136 #define ESSSB_IREG_AUXBRECORD		0x6c
137 #define ESSSB_IREG_MONO			0x6d
138 #define ESSSB_IREG_LINERECORD		0x6e
139 #define ESSSB_IREG_MONORECORD		0x6f
140 #define ESSSB_IREG_AUDIO2SAMPLE		0x70
141 #define ESSSB_IREG_AUDIO2MODE		0x71
142 #define ESSSB_IREG_AUDIO2FILTER		0x72
143 #define ESSSB_IREG_AUDIO2TCOUNTL	0x74
144 #define ESSSB_IREG_AUDIO2TCOUNTH	0x76
145 #define ESSSB_IREG_AUDIO2CONTROL1	0x78
146 #define ESSSB_IREG_AUDIO2CONTROL2	0x7a
147 #define ESSSB_IREG_AUDIO2		0x7c
148 
149 #define ESSSB_REG_RESET			0x06
150 
151 #define ESSSB_REG_READDATA		0x0a
152 #define ESSSB_REG_WRITEDATA		0x0c
153 #define ESSSB_REG_READSTATUS		0x0c
154 
155 #define ESSSB_REG_STATUS		0x0e
156 
157 #define ESS_CMD_EXTSAMPLERATE		0xa1
158 #define ESS_CMD_FILTERDIV		0xa2
159 #define ESS_CMD_DMACNTRELOADL		0xa4
160 #define ESS_CMD_DMACNTRELOADH		0xa5
161 #define ESS_CMD_ANALOGCONTROL		0xa8
162 #define ESS_CMD_IRQCONTROL		0xb1
163 #define ESS_CMD_DRQCONTROL		0xb2
164 #define ESS_CMD_RECLEVEL		0xb4
165 #define ESS_CMD_SETFORMAT		0xb6
166 #define ESS_CMD_SETFORMAT2		0xb7
167 #define ESS_CMD_DMACONTROL		0xb8
168 #define ESS_CMD_DMATYPE			0xb9
169 #define ESS_CMD_OFFSETLEFT		0xba
170 #define ESS_CMD_OFFSETRIGHT		0xbb
171 #define ESS_CMD_READREG			0xc0
172 #define ESS_CMD_ENABLEEXT		0xc6
173 #define ESS_CMD_PAUSEDMA		0xd0
174 #define ESS_CMD_ENABLEAUDIO1		0xd1
175 #define ESS_CMD_STOPAUDIO1		0xd3
176 #define ESS_CMD_AUDIO1STATUS		0xd8
177 #define ESS_CMD_CONTDMA			0xd4
178 #define ESS_CMD_TESTIRQ			0xf2
179 
180 #define ESS_RECSRC_MIC		0
181 #define ESS_RECSRC_AUXACD	2
182 #define ESS_RECSRC_AUXB		5
183 #define ESS_RECSRC_LINE		6
184 #define ESS_RECSRC_NONE		7
185 
186 #define DAC1 0x01
187 #define ADC1 0x02
188 #define DAC2 0x04
189 
190 /*
191 
192  */
193 
194 typedef struct _snd_es1938 es1938_t;
195 
196 #define SAVED_REG_SIZE	32 /* max. number of registers to save */
197 
198 struct _snd_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 	snd_kcontrol_t *hw_volume;
212 	snd_kcontrol_t *hw_switch;
213 	snd_kcontrol_t *master_volume;
214 	snd_kcontrol_t *master_switch;
215 
216 	struct pci_dev *pci;
217 	snd_card_t *card;
218 	snd_pcm_t *pcm;
219 	snd_pcm_substream_t *capture_substream;
220 	snd_pcm_substream_t *playback1_substream;
221 	snd_pcm_substream_t *playback2_substream;
222 	snd_kmixer_t *mixer;
223 	snd_rawmidi_t *rmidi;
224 
225 	unsigned int dma1_size;
226 	unsigned int dma2_size;
227 	unsigned int dma1_start;
228 	unsigned int dma2_start;
229 	unsigned int dma1_shift;
230 	unsigned int dma2_shift;
231 	unsigned int active;
232 
233 	spinlock_t reg_lock;
234 	spinlock_t mixer_lock;
235         snd_info_entry_t *proc_entry;
236 
237 #ifdef SUPPORT_JOYSTICK
238 	struct gameport *gameport;
239 #endif
240 #ifdef CONFIG_PM
241 	unsigned char saved_regs[SAVED_REG_SIZE];
242 #endif
243 };
244 
245 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id, struct pt_regs *regs);
246 
247 static struct pci_device_id snd_es1938_ids[] = {
248         { 0x125d, 0x1969, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* Solo-1 */
249 	{ 0, }
250 };
251 
252 MODULE_DEVICE_TABLE(pci, snd_es1938_ids);
253 
254 #define RESET_LOOP_TIMEOUT	0x10000
255 #define WRITE_LOOP_TIMEOUT	0x10000
256 #define GET_LOOP_TIMEOUT	0x01000
257 
258 #undef REG_DEBUG
259 /* -----------------------------------------------------------------
260  * Write to a mixer register
261  * -----------------------------------------------------------------*/
262 static void snd_es1938_mixer_write(es1938_t *chip, unsigned char reg, unsigned char val)
263 {
264 	unsigned long flags;
265 	spin_lock_irqsave(&chip->mixer_lock, flags);
266 	outb(reg, SLSB_REG(chip, MIXERADDR));
267 	outb(val, SLSB_REG(chip, MIXERDATA));
268 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
269 #ifdef REG_DEBUG
270 	snd_printk(KERN_DEBUG "Mixer reg %02x set to %02x\n", reg, val);
271 #endif
272 }
273 
274 /* -----------------------------------------------------------------
275  * Read from a mixer register
276  * -----------------------------------------------------------------*/
277 static int snd_es1938_mixer_read(es1938_t *chip, unsigned char reg)
278 {
279 	int data;
280 	unsigned long flags;
281 	spin_lock_irqsave(&chip->mixer_lock, flags);
282 	outb(reg, SLSB_REG(chip, MIXERADDR));
283 	data = inb(SLSB_REG(chip, MIXERDATA));
284 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
285 #ifdef REG_DEBUG
286 	snd_printk(KERN_DEBUG "Mixer reg %02x now is %02x\n", reg, data);
287 #endif
288 	return data;
289 }
290 
291 /* -----------------------------------------------------------------
292  * Write to some bits of a mixer register (return old value)
293  * -----------------------------------------------------------------*/
294 static int snd_es1938_mixer_bits(es1938_t *chip, unsigned char reg, 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(es1938_t *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(es1938_t *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(es1938_t *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(es1938_t *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(es1938_t *chip, unsigned char reg, unsigned char mask, unsigned char val)
381 {
382 	unsigned long flags;
383 	unsigned char old, new, oval;
384 	spin_lock_irqsave(&chip->reg_lock, flags);
385 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
386 	snd_es1938_write_cmd(chip, reg);
387 	old = snd_es1938_get_byte(chip);
388 	oval = old & mask;
389 	if (val != oval) {
390 		snd_es1938_write_cmd(chip, reg);
391 		new = (old & ~mask) | (val & mask);
392 		snd_es1938_write_cmd(chip, new);
393 #ifdef REG_DEBUG
394 		snd_printk(KERN_DEBUG "Reg %02x was %02x, set to %02x\n",
395 			   reg, old, new);
396 #endif
397 	}
398 	spin_unlock_irqrestore(&chip->reg_lock, flags);
399 	return oval;
400 }
401 
402 /* --------------------------------------------------------------------
403  * Reset the chip
404  * --------------------------------------------------------------------*/
405 static void snd_es1938_reset(es1938_t *chip)
406 {
407 	int i;
408 
409 	outb(3, SLSB_REG(chip, RESET));
410 	inb(SLSB_REG(chip, RESET));
411 	outb(0, SLSB_REG(chip, RESET));
412 	for (i = 0; i < RESET_LOOP_TIMEOUT; i++) {
413 		if (inb(SLSB_REG(chip, STATUS)) & 0x80) {
414 			if (inb(SLSB_REG(chip, READDATA)) == 0xaa)
415 				goto __next;
416 		}
417 	}
418 	snd_printk(KERN_ERR "ESS Solo-1 reset failed\n");
419 
420      __next:
421 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEEXT);
422 
423 	/* Demand transfer DMA: 4 bytes per DMA request */
424 	snd_es1938_write(chip, ESS_CMD_DMATYPE, 2);
425 
426 	/* Change behaviour of register A1
427 	   4x oversampling
428 	   2nd channel DAC asynchronous */
429 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2MODE, 0x32);
430 	/* enable/select DMA channel and IRQ channel */
431 	snd_es1938_bits(chip, ESS_CMD_IRQCONTROL, 0xf0, 0x50);
432 	snd_es1938_bits(chip, ESS_CMD_DRQCONTROL, 0xf0, 0x50);
433 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEAUDIO1);
434 	/* Set spatializer parameters to recommended values */
435 	snd_es1938_mixer_write(chip, 0x54, 0x8f);
436 	snd_es1938_mixer_write(chip, 0x56, 0x95);
437 	snd_es1938_mixer_write(chip, 0x58, 0x94);
438 	snd_es1938_mixer_write(chip, 0x5a, 0x80);
439 }
440 
441 /* --------------------------------------------------------------------
442  * Reset the FIFOs
443  * --------------------------------------------------------------------*/
444 static void snd_es1938_reset_fifo(es1938_t *chip)
445 {
446 	outb(2, SLSB_REG(chip, RESET));
447 	outb(0, SLSB_REG(chip, RESET));
448 }
449 
450 static ratnum_t clocks[2] = {
451 	{
452 		.num = 793800,
453 		.den_min = 1,
454 		.den_max = 128,
455 		.den_step = 1,
456 	},
457 	{
458 		.num = 768000,
459 		.den_min = 1,
460 		.den_max = 128,
461 		.den_step = 1,
462 	}
463 };
464 
465 static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks = {
466 	.nrats = 2,
467 	.rats = clocks,
468 };
469 
470 
471 static void snd_es1938_rate_set(es1938_t *chip,
472 				snd_pcm_substream_t *substream,
473 				int mode)
474 {
475 	unsigned int bits, div0;
476 	snd_pcm_runtime_t *runtime = substream->runtime;
477 	if (runtime->rate_num == clocks[0].num)
478 		bits = 128 - runtime->rate_den;
479 	else
480 		bits = 256 - runtime->rate_den;
481 
482 	/* set filter register */
483 	div0 = 256 - 7160000*20/(8*82*runtime->rate);
484 
485 	if (mode == DAC2) {
486 		snd_es1938_mixer_write(chip, 0x70, bits);
487 		snd_es1938_mixer_write(chip, 0x72, div0);
488 	} else {
489 		snd_es1938_write(chip, 0xA1, bits);
490 		snd_es1938_write(chip, 0xA2, div0);
491 	}
492 }
493 
494 /* --------------------------------------------------------------------
495  * Configure Solo1 builtin DMA Controller
496  * --------------------------------------------------------------------*/
497 
498 static void snd_es1938_playback1_setdma(es1938_t *chip)
499 {
500 	outb(0x00, SLIO_REG(chip, AUDIO2MODE));
501 	outl(chip->dma2_start, SLIO_REG(chip, AUDIO2DMAADDR));
502 	outw(0, SLIO_REG(chip, AUDIO2DMACOUNT));
503 	outw(chip->dma2_size, SLIO_REG(chip, AUDIO2DMACOUNT));
504 }
505 
506 static void snd_es1938_playback2_setdma(es1938_t *chip)
507 {
508 	/* Enable DMA controller */
509 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
510 	/* 1. Master reset */
511 	outb(0, SLDM_REG(chip, DMACLEAR));
512 	/* 2. Mask DMA */
513 	outb(1, SLDM_REG(chip, DMAMASK));
514 	outb(0x18, SLDM_REG(chip, DMAMODE));
515 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
516 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
517 	/* 3. Unmask DMA */
518 	outb(0, SLDM_REG(chip, DMAMASK));
519 }
520 
521 static void snd_es1938_capture_setdma(es1938_t *chip)
522 {
523 	/* Enable DMA controller */
524 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
525 	/* 1. Master reset */
526 	outb(0, SLDM_REG(chip, DMACLEAR));
527 	/* 2. Mask DMA */
528 	outb(1, SLDM_REG(chip, DMAMASK));
529 	outb(0x14, SLDM_REG(chip, DMAMODE));
530 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
531 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
532 	/* 3. Unmask DMA */
533 	outb(0, SLDM_REG(chip, DMAMASK));
534 }
535 
536 /* ----------------------------------------------------------------------
537  *
538  *                           *** PCM part ***
539  */
540 
541 static int snd_es1938_capture_trigger(snd_pcm_substream_t * substream,
542 				      int cmd)
543 {
544 	es1938_t *chip = snd_pcm_substream_chip(substream);
545 	int val;
546 	switch (cmd) {
547 	case SNDRV_PCM_TRIGGER_START:
548 	case SNDRV_PCM_TRIGGER_RESUME:
549 		val = 0x0f;
550 		chip->active |= ADC1;
551 		break;
552 	case SNDRV_PCM_TRIGGER_STOP:
553 	case SNDRV_PCM_TRIGGER_SUSPEND:
554 		val = 0x00;
555 		chip->active &= ~ADC1;
556 		break;
557 	default:
558 		return -EINVAL;
559 	}
560 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
561 	return 0;
562 }
563 
564 static int snd_es1938_playback1_trigger(snd_pcm_substream_t * substream,
565 					int cmd)
566 {
567 	es1938_t *chip = snd_pcm_substream_chip(substream);
568 	switch (cmd) {
569 	case SNDRV_PCM_TRIGGER_START:
570 	case SNDRV_PCM_TRIGGER_RESUME:
571 		/* According to the documentation this should be:
572 		   0x13 but that value may randomly swap stereo channels */
573                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x92);
574                 udelay(10);
575 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x93);
576                 /* This two stage init gives the FIFO -> DAC connection time to
577                  * settle before first data from DMA flows in.  This should ensure
578                  * no swapping of stereo channels.  Report a bug if otherwise :-) */
579 		outb(0x0a, SLIO_REG(chip, AUDIO2MODE));
580 		chip->active |= DAC2;
581 		break;
582 	case SNDRV_PCM_TRIGGER_STOP:
583 	case SNDRV_PCM_TRIGGER_SUSPEND:
584 		outb(0, SLIO_REG(chip, AUDIO2MODE));
585 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0);
586 		chip->active &= ~DAC2;
587 		break;
588 	default:
589 		return -EINVAL;
590 	}
591 	return 0;
592 }
593 
594 static int snd_es1938_playback2_trigger(snd_pcm_substream_t * substream,
595 					int cmd)
596 {
597 	es1938_t *chip = snd_pcm_substream_chip(substream);
598 	int val;
599 	switch (cmd) {
600 	case SNDRV_PCM_TRIGGER_START:
601 	case SNDRV_PCM_TRIGGER_RESUME:
602 		val = 5;
603 		chip->active |= DAC1;
604 		break;
605 	case SNDRV_PCM_TRIGGER_STOP:
606 	case SNDRV_PCM_TRIGGER_SUSPEND:
607 		val = 0;
608 		chip->active &= ~DAC1;
609 		break;
610 	default:
611 		return -EINVAL;
612 	}
613 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
614 	return 0;
615 }
616 
617 static int snd_es1938_playback_trigger(snd_pcm_substream_t *substream,
618 				       int cmd)
619 {
620 	switch (substream->number) {
621 	case 0:
622 		return snd_es1938_playback1_trigger(substream, cmd);
623 	case 1:
624 		return snd_es1938_playback2_trigger(substream, cmd);
625 	}
626 	snd_BUG();
627 	return -EINVAL;
628 }
629 
630 /* --------------------------------------------------------------------
631  * First channel for Extended Mode Audio 1 ADC Operation
632  * --------------------------------------------------------------------*/
633 static int snd_es1938_capture_prepare(snd_pcm_substream_t * substream)
634 {
635 	es1938_t *chip = snd_pcm_substream_chip(substream);
636 	snd_pcm_runtime_t *runtime = substream->runtime;
637 	int u, is8, mono;
638 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
639 	unsigned int count = snd_pcm_lib_period_bytes(substream);
640 
641 	chip->dma1_size = size;
642 	chip->dma1_start = runtime->dma_addr;
643 
644 	mono = (runtime->channels > 1) ? 0 : 1;
645 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
646 	u = snd_pcm_format_unsigned(runtime->format);
647 
648 	chip->dma1_shift = 2 - mono - is8;
649 
650 	snd_es1938_reset_fifo(chip);
651 
652 	/* program type */
653 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
654 
655 	/* set clock and counters */
656         snd_es1938_rate_set(chip, substream, ADC1);
657 
658 	count = 0x10000 - count;
659 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
660 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
661 
662 	/* initialize and configure ADC */
663 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, u ? 0x51 : 0x71);
664 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, 0x90 |
665 		       (u ? 0x00 : 0x20) |
666 		       (is8 ? 0x00 : 0x04) |
667 		       (mono ? 0x40 : 0x08));
668 
669 	//	snd_es1938_reset_fifo(chip);
670 
671 	/* 11. configure system interrupt controller and DMA controller */
672 	snd_es1938_capture_setdma(chip);
673 
674 	return 0;
675 }
676 
677 
678 /* ------------------------------------------------------------------------------
679  * Second Audio channel DAC Operation
680  * ------------------------------------------------------------------------------*/
681 static int snd_es1938_playback1_prepare(snd_pcm_substream_t * substream)
682 {
683 	es1938_t *chip = snd_pcm_substream_chip(substream);
684 	snd_pcm_runtime_t *runtime = substream->runtime;
685 	int u, is8, mono;
686 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
687 	unsigned int count = snd_pcm_lib_period_bytes(substream);
688 
689 	chip->dma2_size = size;
690 	chip->dma2_start = runtime->dma_addr;
691 
692 	mono = (runtime->channels > 1) ? 0 : 1;
693 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
694 	u = snd_pcm_format_unsigned(runtime->format);
695 
696 	chip->dma2_shift = 2 - mono - is8;
697 
698         snd_es1938_reset_fifo(chip);
699 
700 	/* set clock and counters */
701         snd_es1938_rate_set(chip, substream, DAC2);
702 
703 	count >>= 1;
704 	count = 0x10000 - count;
705 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTL, count & 0xff);
706 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTH, count >> 8);
707 
708 	/* initialize and configure Audio 2 DAC */
709 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x40 | (u ? 0 : 4) | (mono ? 0 : 2) | (is8 ? 0 : 1));
710 
711 	/* program DMA */
712 	snd_es1938_playback1_setdma(chip);
713 
714 	return 0;
715 }
716 
717 static int snd_es1938_playback2_prepare(snd_pcm_substream_t * substream)
718 {
719 	es1938_t *chip = snd_pcm_substream_chip(substream);
720 	snd_pcm_runtime_t *runtime = substream->runtime;
721 	int u, is8, mono;
722 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
723 	unsigned int count = snd_pcm_lib_period_bytes(substream);
724 
725 	chip->dma1_size = size;
726 	chip->dma1_start = runtime->dma_addr;
727 
728 	mono = (runtime->channels > 1) ? 0 : 1;
729 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
730 	u = snd_pcm_format_unsigned(runtime->format);
731 
732 	chip->dma1_shift = 2 - mono - is8;
733 
734 	count = 0x10000 - count;
735 
736 	/* reset */
737 	snd_es1938_reset_fifo(chip);
738 
739 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
740 
741 	/* set clock and counters */
742         snd_es1938_rate_set(chip, substream, DAC1);
743 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
744 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
745 
746 	/* initialized and configure DAC */
747         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x80 : 0x00);
748         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x51 : 0x71);
749         snd_es1938_write(chip, ESS_CMD_SETFORMAT2,
750 			 0x90 | (mono ? 0x40 : 0x08) |
751 			 (is8 ? 0x00 : 0x04) | (u ? 0x00 : 0x20));
752 
753 	/* program DMA */
754 	snd_es1938_playback2_setdma(chip);
755 
756 	return 0;
757 }
758 
759 static int snd_es1938_playback_prepare(snd_pcm_substream_t *substream)
760 {
761 	switch (substream->number) {
762 	case 0:
763 		return snd_es1938_playback1_prepare(substream);
764 	case 1:
765 		return snd_es1938_playback2_prepare(substream);
766 	}
767 	snd_BUG();
768 	return -EINVAL;
769 }
770 
771 static snd_pcm_uframes_t snd_es1938_capture_pointer(snd_pcm_substream_t * substream)
772 {
773 	es1938_t *chip = snd_pcm_substream_chip(substream);
774 	size_t ptr;
775 	size_t old, new;
776 #if 1
777 	/* This stuff is *needed*, don't ask why - AB */
778 	old = inw(SLDM_REG(chip, DMACOUNT));
779 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
780 		old = new;
781 	ptr = chip->dma1_size - 1 - new;
782 #else
783 	ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
784 #endif
785 	return ptr >> chip->dma1_shift;
786 }
787 
788 static snd_pcm_uframes_t snd_es1938_playback1_pointer(snd_pcm_substream_t * substream)
789 {
790 	es1938_t *chip = snd_pcm_substream_chip(substream);
791 	size_t ptr;
792 #if 1
793 	ptr = chip->dma2_size - inw(SLIO_REG(chip, AUDIO2DMACOUNT));
794 #else
795 	ptr = inl(SLIO_REG(chip, AUDIO2DMAADDR)) - chip->dma2_start;
796 #endif
797 	return ptr >> chip->dma2_shift;
798 }
799 
800 static snd_pcm_uframes_t snd_es1938_playback2_pointer(snd_pcm_substream_t * substream)
801 {
802 	es1938_t *chip = snd_pcm_substream_chip(substream);
803 	size_t ptr;
804 	size_t old, new;
805 #if 1
806 	/* This stuff is *needed*, don't ask why - AB */
807 	old = inw(SLDM_REG(chip, DMACOUNT));
808 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
809 		old = new;
810 	ptr = chip->dma1_size - 1 - new;
811 #else
812 	ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
813 #endif
814 	return ptr >> chip->dma1_shift;
815 }
816 
817 static snd_pcm_uframes_t snd_es1938_playback_pointer(snd_pcm_substream_t *substream)
818 {
819 	switch (substream->number) {
820 	case 0:
821 		return snd_es1938_playback1_pointer(substream);
822 	case 1:
823 		return snd_es1938_playback2_pointer(substream);
824 	}
825 	snd_BUG();
826 	return -EINVAL;
827 }
828 
829 static int snd_es1938_capture_copy(snd_pcm_substream_t *substream,
830 				   int channel,
831 				   snd_pcm_uframes_t pos,
832 				   void __user *dst,
833 				   snd_pcm_uframes_t count)
834 {
835 	snd_pcm_runtime_t *runtime = substream->runtime;
836 	es1938_t *chip = snd_pcm_substream_chip(substream);
837 	pos <<= chip->dma1_shift;
838 	count <<= chip->dma1_shift;
839 	snd_assert(pos + count <= chip->dma1_size, return -EINVAL);
840 	if (pos + count < chip->dma1_size) {
841 		if (copy_to_user(dst, runtime->dma_area + pos + 1, count))
842 			return -EFAULT;
843 	} else {
844 		if (copy_to_user(dst, runtime->dma_area + pos + 1, count - 1))
845 			return -EFAULT;
846 		if (put_user(runtime->dma_area[0], ((unsigned char __user *)dst) + count - 1))
847 			return -EFAULT;
848 	}
849 	return 0;
850 }
851 
852 /*
853  * buffer management
854  */
855 static int snd_es1938_pcm_hw_params(snd_pcm_substream_t *substream,
856 				    snd_pcm_hw_params_t * hw_params)
857 
858 {
859 	int err;
860 
861 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
862 		return err;
863 	return 0;
864 }
865 
866 static int snd_es1938_pcm_hw_free(snd_pcm_substream_t *substream)
867 {
868 	return snd_pcm_lib_free_pages(substream);
869 }
870 
871 /* ----------------------------------------------------------------------
872  * Audio1 Capture (ADC)
873  * ----------------------------------------------------------------------*/
874 static snd_pcm_hardware_t snd_es1938_capture =
875 {
876 	.info =			(SNDRV_PCM_INFO_INTERLEAVED |
877 				SNDRV_PCM_INFO_BLOCK_TRANSFER),
878 	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE,
879 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
880 	.rate_min =		6000,
881 	.rate_max =		48000,
882 	.channels_min =		1,
883 	.channels_max =		2,
884         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
885 	.period_bytes_min =	64,
886 	.period_bytes_max =	0x8000,
887 	.periods_min =		1,
888 	.periods_max =		1024,
889 	.fifo_size =		256,
890 };
891 
892 /* -----------------------------------------------------------------------
893  * Audio2 Playback (DAC)
894  * -----------------------------------------------------------------------*/
895 static snd_pcm_hardware_t snd_es1938_playback =
896 {
897 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
898 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
899 				 SNDRV_PCM_INFO_MMAP_VALID),
900 	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE,
901 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
902 	.rate_min =		6000,
903 	.rate_max =		48000,
904 	.channels_min =		1,
905 	.channels_max =		2,
906         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
907 	.period_bytes_min =	64,
908 	.period_bytes_max =	0x8000,
909 	.periods_min =		1,
910 	.periods_max =		1024,
911 	.fifo_size =		256,
912 };
913 
914 static int snd_es1938_capture_open(snd_pcm_substream_t * substream)
915 {
916 	es1938_t *chip = snd_pcm_substream_chip(substream);
917 	snd_pcm_runtime_t *runtime = substream->runtime;
918 
919 	if (chip->playback2_substream)
920 		return -EAGAIN;
921 	chip->capture_substream = substream;
922 	runtime->hw = snd_es1938_capture;
923 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
924 				      &hw_constraints_clocks);
925 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
926 	return 0;
927 }
928 
929 static int snd_es1938_playback_open(snd_pcm_substream_t * substream)
930 {
931 	es1938_t *chip = snd_pcm_substream_chip(substream);
932 	snd_pcm_runtime_t *runtime = substream->runtime;
933 
934 	switch (substream->number) {
935 	case 0:
936 		chip->playback1_substream = substream;
937 		break;
938 	case 1:
939 		if (chip->capture_substream)
940 			return -EAGAIN;
941 		chip->playback2_substream = substream;
942 		break;
943 	default:
944 		snd_BUG();
945 		return -EINVAL;
946 	}
947 	runtime->hw = snd_es1938_playback;
948 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
949 				      &hw_constraints_clocks);
950 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
951 	return 0;
952 }
953 
954 static int snd_es1938_capture_close(snd_pcm_substream_t * substream)
955 {
956 	es1938_t *chip = snd_pcm_substream_chip(substream);
957 
958 	chip->capture_substream = NULL;
959 	return 0;
960 }
961 
962 static int snd_es1938_playback_close(snd_pcm_substream_t * substream)
963 {
964 	es1938_t *chip = snd_pcm_substream_chip(substream);
965 
966 	switch (substream->number) {
967 	case 0:
968 		chip->playback1_substream = NULL;
969 		break;
970 	case 1:
971 		chip->playback2_substream = NULL;
972 		break;
973 	default:
974 		snd_BUG();
975 		return -EINVAL;
976 	}
977 	return 0;
978 }
979 
980 static snd_pcm_ops_t snd_es1938_playback_ops = {
981 	.open =		snd_es1938_playback_open,
982 	.close =	snd_es1938_playback_close,
983 	.ioctl =	snd_pcm_lib_ioctl,
984 	.hw_params =	snd_es1938_pcm_hw_params,
985 	.hw_free =	snd_es1938_pcm_hw_free,
986 	.prepare =	snd_es1938_playback_prepare,
987 	.trigger =	snd_es1938_playback_trigger,
988 	.pointer =	snd_es1938_playback_pointer,
989 };
990 
991 static snd_pcm_ops_t snd_es1938_capture_ops = {
992 	.open =		snd_es1938_capture_open,
993 	.close =	snd_es1938_capture_close,
994 	.ioctl =	snd_pcm_lib_ioctl,
995 	.hw_params =	snd_es1938_pcm_hw_params,
996 	.hw_free =	snd_es1938_pcm_hw_free,
997 	.prepare =	snd_es1938_capture_prepare,
998 	.trigger =	snd_es1938_capture_trigger,
999 	.pointer =	snd_es1938_capture_pointer,
1000 	.copy =		snd_es1938_capture_copy,
1001 };
1002 
1003 static void snd_es1938_free_pcm(snd_pcm_t *pcm)
1004 {
1005 	snd_pcm_lib_preallocate_free_for_all(pcm);
1006 }
1007 
1008 static int __devinit snd_es1938_new_pcm(es1938_t *chip, int device)
1009 {
1010 	snd_pcm_t *pcm;
1011 	int err;
1012 
1013 	if ((err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm)) < 0)
1014 		return err;
1015 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1938_playback_ops);
1016 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1938_capture_ops);
1017 
1018 	pcm->private_data = chip;
1019 	pcm->private_free = snd_es1938_free_pcm;
1020 	pcm->info_flags = 0;
1021 	strcpy(pcm->name, "ESS Solo-1");
1022 
1023 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1024 					      snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1025 
1026 	chip->pcm = pcm;
1027 	return 0;
1028 }
1029 
1030 /* -------------------------------------------------------------------
1031  *
1032  *                       *** Mixer part ***
1033  */
1034 
1035 static int snd_es1938_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1036 {
1037 	static char *texts[8] = {
1038 		"Mic", "Mic Master", "CD", "AOUT",
1039 		"Mic1", "Mix", "Line", "Master"
1040 	};
1041 
1042 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1043 	uinfo->count = 1;
1044 	uinfo->value.enumerated.items = 8;
1045 	if (uinfo->value.enumerated.item > 7)
1046 		uinfo->value.enumerated.item = 7;
1047 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1048 	return 0;
1049 }
1050 
1051 static int snd_es1938_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1052 {
1053 	es1938_t *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(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1059 {
1060 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1061 	unsigned char val = ucontrol->value.enumerated.item[0];
1062 
1063 	if (val > 7)
1064 		return -EINVAL;
1065 	return snd_es1938_mixer_bits(chip, 0x1c, 0x07, val) != val;
1066 }
1067 
1068 static int snd_es1938_info_spatializer_enable(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1069 {
1070 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1071 	uinfo->count = 1;
1072 	uinfo->value.integer.min = 0;
1073 	uinfo->value.integer.max = 1;
1074 	return 0;
1075 }
1076 
1077 static int snd_es1938_get_spatializer_enable(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1078 {
1079 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1080 	unsigned char val = snd_es1938_mixer_read(chip, 0x50);
1081 	ucontrol->value.integer.value[0] = !!(val & 8);
1082 	return 0;
1083 }
1084 
1085 static int snd_es1938_put_spatializer_enable(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1086 {
1087 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1088 	unsigned char oval, nval;
1089 	int change;
1090 	nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
1091 	oval = snd_es1938_mixer_read(chip, 0x50) & 0x0c;
1092 	change = nval != oval;
1093 	if (change) {
1094 		snd_es1938_mixer_write(chip, 0x50, nval & ~0x04);
1095 		snd_es1938_mixer_write(chip, 0x50, nval);
1096 	}
1097 	return change;
1098 }
1099 
1100 static int snd_es1938_info_hw_volume(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1101 {
1102 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1103 	uinfo->count = 2;
1104 	uinfo->value.integer.min = 0;
1105 	uinfo->value.integer.max = 63;
1106 	return 0;
1107 }
1108 
1109 static int snd_es1938_get_hw_volume(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1110 {
1111 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1112 	ucontrol->value.integer.value[0] = snd_es1938_mixer_read(chip, 0x61) & 0x3f;
1113 	ucontrol->value.integer.value[1] = snd_es1938_mixer_read(chip, 0x63) & 0x3f;
1114 	return 0;
1115 }
1116 
1117 static int snd_es1938_info_hw_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1118 {
1119 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1120 	uinfo->count = 2;
1121 	uinfo->value.integer.min = 0;
1122 	uinfo->value.integer.max = 1;
1123 	return 0;
1124 }
1125 
1126 static int snd_es1938_get_hw_switch(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1127 {
1128 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1129 	ucontrol->value.integer.value[0] = !(snd_es1938_mixer_read(chip, 0x61) & 0x40);
1130 	ucontrol->value.integer.value[1] = !(snd_es1938_mixer_read(chip, 0x63) & 0x40);
1131 	return 0;
1132 }
1133 
1134 static void snd_es1938_hwv_free(snd_kcontrol_t *kcontrol)
1135 {
1136 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1137 	chip->master_volume = NULL;
1138 	chip->master_switch = NULL;
1139 	chip->hw_volume = NULL;
1140 	chip->hw_switch = NULL;
1141 }
1142 
1143 static int snd_es1938_reg_bits(es1938_t *chip, unsigned char reg,
1144 			       unsigned char mask, unsigned char val)
1145 {
1146 	if (reg < 0xa0)
1147 		return snd_es1938_mixer_bits(chip, reg, mask, val);
1148 	else
1149 		return snd_es1938_bits(chip, reg, mask, val);
1150 }
1151 
1152 static int snd_es1938_reg_read(es1938_t *chip, unsigned char reg)
1153 {
1154 	if (reg < 0xa0)
1155 		return snd_es1938_mixer_read(chip, reg);
1156 	else
1157 		return snd_es1938_read(chip, reg);
1158 }
1159 
1160 #define ES1938_SINGLE(xname, xindex, reg, shift, mask, invert) \
1161 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1162   .info = snd_es1938_info_single, \
1163   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1164   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1165 
1166 static int snd_es1938_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1167 {
1168 	int mask = (kcontrol->private_value >> 16) & 0xff;
1169 
1170 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1171 	uinfo->count = 1;
1172 	uinfo->value.integer.min = 0;
1173 	uinfo->value.integer.max = mask;
1174 	return 0;
1175 }
1176 
1177 static int snd_es1938_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1178 {
1179 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1180 	int reg = kcontrol->private_value & 0xff;
1181 	int shift = (kcontrol->private_value >> 8) & 0xff;
1182 	int mask = (kcontrol->private_value >> 16) & 0xff;
1183 	int invert = (kcontrol->private_value >> 24) & 0xff;
1184 	int val;
1185 
1186 	val = snd_es1938_reg_read(chip, reg);
1187 	ucontrol->value.integer.value[0] = (val >> shift) & mask;
1188 	if (invert)
1189 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1190 	return 0;
1191 }
1192 
1193 static int snd_es1938_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1194 {
1195 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1196 	int reg = kcontrol->private_value & 0xff;
1197 	int shift = (kcontrol->private_value >> 8) & 0xff;
1198 	int mask = (kcontrol->private_value >> 16) & 0xff;
1199 	int invert = (kcontrol->private_value >> 24) & 0xff;
1200 	unsigned char val;
1201 
1202 	val = (ucontrol->value.integer.value[0] & mask);
1203 	if (invert)
1204 		val = mask - val;
1205 	mask <<= shift;
1206 	val <<= shift;
1207 	return snd_es1938_reg_bits(chip, reg, mask, val) != val;
1208 }
1209 
1210 #define ES1938_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1211 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1212   .info = snd_es1938_info_double, \
1213   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1214   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1215 
1216 static int snd_es1938_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1217 {
1218 	int mask = (kcontrol->private_value >> 24) & 0xff;
1219 
1220 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1221 	uinfo->count = 2;
1222 	uinfo->value.integer.min = 0;
1223 	uinfo->value.integer.max = mask;
1224 	return 0;
1225 }
1226 
1227 static int snd_es1938_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1228 {
1229 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1230 	int left_reg = kcontrol->private_value & 0xff;
1231 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1232 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1233 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1234 	int mask = (kcontrol->private_value >> 24) & 0xff;
1235 	int invert = (kcontrol->private_value >> 22) & 1;
1236 	unsigned char left, right;
1237 
1238 	left = snd_es1938_reg_read(chip, left_reg);
1239 	if (left_reg != right_reg)
1240 		right = snd_es1938_reg_read(chip, right_reg);
1241 	else
1242 		right = left;
1243 	ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1244 	ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1245 	if (invert) {
1246 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1247 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1248 	}
1249 	return 0;
1250 }
1251 
1252 static int snd_es1938_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1253 {
1254 	es1938_t *chip = snd_kcontrol_chip(kcontrol);
1255 	int left_reg = kcontrol->private_value & 0xff;
1256 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1257 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1258 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1259 	int mask = (kcontrol->private_value >> 24) & 0xff;
1260 	int invert = (kcontrol->private_value >> 22) & 1;
1261 	int change;
1262 	unsigned char val1, val2, mask1, mask2;
1263 
1264 	val1 = ucontrol->value.integer.value[0] & mask;
1265 	val2 = ucontrol->value.integer.value[1] & mask;
1266 	if (invert) {
1267 		val1 = mask - val1;
1268 		val2 = mask - val2;
1269 	}
1270 	val1 <<= shift_left;
1271 	val2 <<= shift_right;
1272 	mask1 = mask << shift_left;
1273 	mask2 = mask << shift_right;
1274 	if (left_reg != right_reg) {
1275 		change = 0;
1276 		if (snd_es1938_reg_bits(chip, left_reg, mask1, val1) != val1)
1277 			change = 1;
1278 		if (snd_es1938_reg_bits(chip, right_reg, mask2, val2) != val2)
1279 			change = 1;
1280 	} else {
1281 		change = (snd_es1938_reg_bits(chip, left_reg, mask1 | mask2,
1282 					      val1 | val2) != (val1 | val2));
1283 	}
1284 	return change;
1285 }
1286 
1287 static snd_kcontrol_new_t snd_es1938_controls[] = {
1288 ES1938_DOUBLE("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0),
1289 ES1938_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1290 {
1291 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1292 	.name = "Hardware Master Playback Volume",
1293 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1294 	.info = snd_es1938_info_hw_volume,
1295 	.get = snd_es1938_get_hw_volume,
1296 },
1297 {
1298 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1299 	.name = "Hardware Master Playback Switch",
1300 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1301 	.info = snd_es1938_info_hw_switch,
1302 	.get = snd_es1938_get_hw_switch,
1303 },
1304 ES1938_SINGLE("Hardware Volume Split", 0, 0x64, 7, 1, 0),
1305 ES1938_DOUBLE("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0),
1306 ES1938_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1307 ES1938_DOUBLE("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0),
1308 ES1938_DOUBLE("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
1309 ES1938_DOUBLE("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0),
1310 ES1938_DOUBLE("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0),
1311 ES1938_DOUBLE("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0),
1312 ES1938_SINGLE("PC Speaker Volume", 0, 0x3c, 0, 7, 0),
1313 ES1938_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1314 ES1938_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1315 {
1316 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1317 	.name = "Capture Source",
1318 	.info = snd_es1938_info_mux,
1319 	.get = snd_es1938_get_mux,
1320 	.put = snd_es1938_put_mux,
1321 },
1322 ES1938_DOUBLE("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0),
1323 ES1938_DOUBLE("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0),
1324 ES1938_DOUBLE("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0),
1325 ES1938_DOUBLE("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0),
1326 ES1938_DOUBLE("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0),
1327 ES1938_DOUBLE("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0),
1328 ES1938_DOUBLE("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0),
1329 ES1938_DOUBLE("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0),
1330 ES1938_DOUBLE("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0),
1331 ES1938_DOUBLE("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0),
1332 ES1938_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1333 {
1334 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1335 	.name = "3D Control - Switch",
1336 	.info = snd_es1938_info_spatializer_enable,
1337 	.get = snd_es1938_get_spatializer_enable,
1338 	.put = snd_es1938_put_spatializer_enable,
1339 },
1340 ES1938_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0)
1341 };
1342 
1343 
1344 /* ---------------------------------------------------------------------------- */
1345 /* ---------------------------------------------------------------------------- */
1346 
1347 /*
1348  * initialize the chip - used by resume callback, too
1349  */
1350 static void snd_es1938_chip_init(es1938_t *chip)
1351 {
1352 	/* reset chip */
1353 	snd_es1938_reset(chip);
1354 
1355 	/* configure native mode */
1356 
1357 	/* enable bus master */
1358 	pci_set_master(chip->pci);
1359 
1360 	/* disable legacy audio */
1361 	pci_write_config_word(chip->pci, SL_PCI_LEGACYCONTROL, 0x805f);
1362 
1363 	/* set DDMA base */
1364 	pci_write_config_word(chip->pci, SL_PCI_DDMACONTROL, chip->ddma_port | 1);
1365 
1366 	/* set DMA/IRQ policy */
1367 	pci_write_config_dword(chip->pci, SL_PCI_CONFIG, 0);
1368 
1369 	/* enable Audio 1, Audio 2, MPU401 IRQ and HW volume IRQ*/
1370 	outb(0xf0, SLIO_REG(chip, IRQCONTROL));
1371 
1372 	/* reset DMA */
1373 	outb(0, SLDM_REG(chip, DMACLEAR));
1374 }
1375 
1376 #ifdef CONFIG_PM
1377 /*
1378  * PM support
1379  */
1380 
1381 static unsigned char saved_regs[SAVED_REG_SIZE+1] = {
1382 	0x14, 0x1a, 0x1c, 0x3a, 0x3c, 0x3e, 0x36, 0x38,
1383 	0x50, 0x52, 0x60, 0x61, 0x62, 0x63, 0x64, 0x68,
1384 	0x69, 0x6a, 0x6b, 0x6d, 0x6e, 0x6f, 0x7c, 0x7d,
1385 	0xa8, 0xb4,
1386 };
1387 
1388 
1389 static int es1938_suspend(snd_card_t *card, pm_message_t state)
1390 {
1391 	es1938_t *chip = card->pm_private_data;
1392 	unsigned char *s, *d;
1393 
1394 	snd_pcm_suspend_all(chip->pcm);
1395 
1396 	/* save mixer-related registers */
1397 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++)
1398 		*d = snd_es1938_reg_read(chip, *s);
1399 
1400 	outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
1401 	if (chip->irq >= 0)
1402 		free_irq(chip->irq, (void *)chip);
1403 	pci_disable_device(chip->pci);
1404 	return 0;
1405 }
1406 
1407 static int es1938_resume(snd_card_t *card)
1408 {
1409 	es1938_t *chip = card->pm_private_data;
1410 	unsigned char *s, *d;
1411 
1412 	pci_enable_device(chip->pci);
1413 	request_irq(chip->pci->irq, snd_es1938_interrupt,
1414 		    SA_INTERRUPT|SA_SHIRQ, "ES1938", (void *)chip);
1415 	chip->irq = chip->pci->irq;
1416 	snd_es1938_chip_init(chip);
1417 
1418 	/* restore mixer-related registers */
1419 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++) {
1420 		if (*s < 0xa0)
1421 			snd_es1938_mixer_write(chip, *s, *d);
1422 		else
1423 			snd_es1938_write(chip, *s, *d);
1424 	}
1425 
1426 	return 0;
1427 }
1428 #endif /* CONFIG_PM */
1429 
1430 #ifdef SUPPORT_JOYSTICK
1431 static int __devinit snd_es1938_create_gameport(es1938_t *chip)
1432 {
1433 	struct gameport *gp;
1434 
1435 	chip->gameport = gp = gameport_allocate_port();
1436 	if (!gp) {
1437 		printk(KERN_ERR "es1938: cannot allocate memory for gameport\n");
1438 		return -ENOMEM;
1439 	}
1440 
1441 	gameport_set_name(gp, "ES1938");
1442 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1443 	gameport_set_dev_parent(gp, &chip->pci->dev);
1444 	gp->io = chip->game_port;
1445 
1446 	gameport_register_port(gp);
1447 
1448 	return 0;
1449 }
1450 
1451 static void snd_es1938_free_gameport(es1938_t *chip)
1452 {
1453 	if (chip->gameport) {
1454 		gameport_unregister_port(chip->gameport);
1455 		chip->gameport = NULL;
1456 	}
1457 }
1458 #else
1459 static inline int snd_es1938_create_gameport(es1938_t *chip) { return -ENOSYS; }
1460 static inline void snd_es1938_free_gameport(es1938_t *chip) { }
1461 #endif /* SUPPORT_JOYSTICK */
1462 
1463 static int snd_es1938_free(es1938_t *chip)
1464 {
1465 	/* disable irqs */
1466 	outb(0x00, SLIO_REG(chip, IRQCONTROL));
1467 	if (chip->rmidi)
1468 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
1469 
1470 	snd_es1938_free_gameport(chip);
1471 
1472 	if (chip->irq >= 0)
1473 		free_irq(chip->irq, (void *)chip);
1474 	pci_release_regions(chip->pci);
1475 	pci_disable_device(chip->pci);
1476 	kfree(chip);
1477 	return 0;
1478 }
1479 
1480 static int snd_es1938_dev_free(snd_device_t *device)
1481 {
1482 	es1938_t *chip = device->device_data;
1483 	return snd_es1938_free(chip);
1484 }
1485 
1486 static int __devinit snd_es1938_create(snd_card_t * card,
1487 				    struct pci_dev * pci,
1488 				    es1938_t ** rchip)
1489 {
1490 	es1938_t *chip;
1491 	int err;
1492 	static snd_device_ops_t ops = {
1493 		.dev_free =	snd_es1938_dev_free,
1494 	};
1495 
1496 	*rchip = NULL;
1497 
1498 	/* enable PCI device */
1499 	if ((err = pci_enable_device(pci)) < 0)
1500 		return err;
1501         /* check, if we can restrict PCI DMA transfers to 24 bits */
1502 	if (pci_set_dma_mask(pci, 0x00ffffff) < 0 ||
1503 	    pci_set_consistent_dma_mask(pci, 0x00ffffff) < 0) {
1504 		snd_printk(KERN_ERR "architecture does not support 24bit PCI busmaster DMA\n");
1505 		pci_disable_device(pci);
1506                 return -ENXIO;
1507         }
1508 
1509 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1510 	if (chip == NULL) {
1511 		pci_disable_device(pci);
1512 		return -ENOMEM;
1513 	}
1514 	spin_lock_init(&chip->reg_lock);
1515 	spin_lock_init(&chip->mixer_lock);
1516 	chip->card = card;
1517 	chip->pci = pci;
1518 	if ((err = pci_request_regions(pci, "ESS Solo-1")) < 0) {
1519 		kfree(chip);
1520 		pci_disable_device(pci);
1521 		return err;
1522 	}
1523 	chip->io_port = pci_resource_start(pci, 0);
1524 	chip->sb_port = pci_resource_start(pci, 1);
1525 	chip->vc_port = pci_resource_start(pci, 2);
1526 	chip->mpu_port = pci_resource_start(pci, 3);
1527 	chip->game_port = pci_resource_start(pci, 4);
1528 	if (request_irq(pci->irq, snd_es1938_interrupt, SA_INTERRUPT|SA_SHIRQ, "ES1938", (void *)chip)) {
1529 		snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1530 		snd_es1938_free(chip);
1531 		return -EBUSY;
1532 	}
1533 	chip->irq = pci->irq;
1534 #ifdef ES1938_DDEBUG
1535 	snd_printk(KERN_DEBUG "create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
1536 		   chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);
1537 #endif
1538 
1539 	chip->ddma_port = chip->vc_port + 0x00;		/* fix from Thomas Sailer */
1540 
1541 	snd_es1938_chip_init(chip);
1542 
1543 	snd_card_set_pm_callback(card, es1938_suspend, es1938_resume, chip);
1544 
1545 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1546 		snd_es1938_free(chip);
1547 		return err;
1548 	}
1549 
1550 	snd_card_set_dev(card, &pci->dev);
1551 
1552 	*rchip = chip;
1553 	return 0;
1554 }
1555 
1556 /* --------------------------------------------------------------------
1557  * Interrupt handler
1558  * -------------------------------------------------------------------- */
1559 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1560 {
1561 	es1938_t *chip = dev_id;
1562 	unsigned char status, audiostatus;
1563 	int handled = 0;
1564 
1565 	status = inb(SLIO_REG(chip, IRQCONTROL));
1566 #if 0
1567 	printk("Es1938debug - interrupt status: =0x%x\n", status);
1568 #endif
1569 
1570 	/* AUDIO 1 */
1571 	if (status & 0x10) {
1572 #if 0
1573                 printk("Es1938debug - AUDIO channel 1 interrupt\n");
1574 		printk("Es1938debug - AUDIO channel 1 DMAC DMA count: %u\n", inw(SLDM_REG(chip, DMACOUNT)));
1575 		printk("Es1938debug - AUDIO channel 1 DMAC DMA base: %u\n", inl(SLDM_REG(chip, DMAADDR)));
1576 		printk("Es1938debug - AUDIO channel 1 DMAC DMA status: 0x%x\n", inl(SLDM_REG(chip, DMASTATUS)));
1577 #endif
1578 		/* clear irq */
1579 		handled = 1;
1580 		audiostatus = inb(SLSB_REG(chip, STATUS));
1581 		if (chip->active & ADC1)
1582 			snd_pcm_period_elapsed(chip->capture_substream);
1583 		else if (chip->active & DAC1)
1584 			snd_pcm_period_elapsed(chip->playback2_substream);
1585 	}
1586 
1587 	/* AUDIO 2 */
1588 	if (status & 0x20) {
1589 #if 0
1590                 printk("Es1938debug - AUDIO channel 2 interrupt\n");
1591 		printk("Es1938debug - AUDIO channel 2 DMAC DMA count: %u\n", inw(SLIO_REG(chip, AUDIO2DMACOUNT)));
1592 		printk("Es1938debug - AUDIO channel 2 DMAC DMA base: %u\n", inl(SLIO_REG(chip, AUDIO2DMAADDR)));
1593 
1594 #endif
1595 		/* clear irq */
1596 		handled = 1;
1597 		snd_es1938_mixer_bits(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x80, 0);
1598 		if (chip->active & DAC2)
1599 			snd_pcm_period_elapsed(chip->playback1_substream);
1600 	}
1601 
1602 	/* Hardware volume */
1603 	if (status & 0x40) {
1604 		int split = snd_es1938_mixer_read(chip, 0x64) & 0x80;
1605 		handled = 1;
1606 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
1607 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
1608 		if (!split) {
1609 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->master_switch->id);
1610 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->master_volume->id);
1611 		}
1612 		/* ack interrupt */
1613 		snd_es1938_mixer_write(chip, 0x66, 0x00);
1614 	}
1615 
1616 	/* MPU401 */
1617 	if (status & 0x80) {
1618 		// the following line is evil! It switches off MIDI interrupt handling after the first interrupt received.
1619 		// replacing the last 0 by 0x40 works for ESS-Solo1, but just doing nothing works as well!
1620 		// andreas@flying-snail.de
1621 		// snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0); /* ack? */
1622 		if (chip->rmidi) {
1623 			handled = 1;
1624 			snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
1625 		}
1626 	}
1627 	return IRQ_RETVAL(handled);
1628 }
1629 
1630 #define ES1938_DMA_SIZE 64
1631 
1632 static int __devinit snd_es1938_mixer(es1938_t *chip)
1633 {
1634 	snd_card_t *card;
1635 	unsigned int idx;
1636 	int err;
1637 
1638 	card = chip->card;
1639 
1640 	strcpy(card->mixername, "ESS Solo-1");
1641 
1642 	for (idx = 0; idx < ARRAY_SIZE(snd_es1938_controls); idx++) {
1643 		snd_kcontrol_t *kctl;
1644 		kctl = snd_ctl_new1(&snd_es1938_controls[idx], chip);
1645 		switch (idx) {
1646 			case 0:
1647 				chip->master_volume = kctl;
1648 				kctl->private_free = snd_es1938_hwv_free;
1649 				break;
1650 			case 1:
1651 				chip->master_switch = kctl;
1652 				kctl->private_free = snd_es1938_hwv_free;
1653 				break;
1654 			case 2:
1655 				chip->hw_volume = kctl;
1656 				kctl->private_free = snd_es1938_hwv_free;
1657 				break;
1658 			case 3:
1659 				chip->hw_switch = kctl;
1660 				kctl->private_free = snd_es1938_hwv_free;
1661 				break;
1662 			}
1663 		if ((err = snd_ctl_add(card, kctl)) < 0)
1664 			return err;
1665 	}
1666 	return 0;
1667 }
1668 
1669 
1670 static int __devinit snd_es1938_probe(struct pci_dev *pci,
1671 				      const struct pci_device_id *pci_id)
1672 {
1673 	static int dev;
1674 	snd_card_t *card;
1675 	es1938_t *chip;
1676 	opl3_t *opl3;
1677 	int idx, err;
1678 
1679 	if (dev >= SNDRV_CARDS)
1680 		return -ENODEV;
1681 	if (!enable[dev]) {
1682 		dev++;
1683 		return -ENOENT;
1684 	}
1685 
1686 	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1687 	if (card == NULL)
1688 		return -ENOMEM;
1689 	for (idx = 0; idx < 5; idx++) {
1690 		if (pci_resource_start(pci, idx) == 0 ||
1691 		    !(pci_resource_flags(pci, idx) & IORESOURCE_IO)) {
1692 		    	snd_card_free(card);
1693 		    	return -ENODEV;
1694 		}
1695 	}
1696 	if ((err = snd_es1938_create(card, pci, &chip)) < 0) {
1697 		snd_card_free(card);
1698 		return err;
1699 	}
1700 
1701 	strcpy(card->driver, "ES1938");
1702 	strcpy(card->shortname, "ESS ES1938 (Solo-1)");
1703 	sprintf(card->longname, "%s rev %i, irq %i",
1704 		card->shortname,
1705 		chip->revision,
1706 		chip->irq);
1707 
1708 	if ((err = snd_es1938_new_pcm(chip, 0)) < 0) {
1709 		snd_card_free(card);
1710 		return err;
1711 	}
1712 	if ((err = snd_es1938_mixer(chip)) < 0) {
1713 		snd_card_free(card);
1714 		return err;
1715 	}
1716 	if (snd_opl3_create(card,
1717 			    SLSB_REG(chip, FMLOWADDR),
1718 			    SLSB_REG(chip, FMHIGHADDR),
1719 			    OPL3_HW_OPL3, 1, &opl3) < 0) {
1720 		printk(KERN_ERR "es1938: OPL3 not detected at 0x%lx\n",
1721 			   SLSB_REG(chip, FMLOWADDR));
1722 	} else {
1723 	        if ((err = snd_opl3_timer_new(opl3, 0, 1)) < 0) {
1724 	                snd_card_free(card);
1725 	                return err;
1726 		}
1727 	        if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1728 	                snd_card_free(card);
1729 	                return err;
1730 		}
1731 	}
1732 	if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
1733 				chip->mpu_port, 1, chip->irq, 0, &chip->rmidi) < 0) {
1734 		printk(KERN_ERR "es1938: unable to initialize MPU-401\n");
1735 	} else {
1736 		// this line is vital for MIDI interrupt handling on ess-solo1
1737 		// andreas@flying-snail.de
1738 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0x40);
1739 	}
1740 
1741 	snd_es1938_create_gameport(chip);
1742 
1743 	if ((err = snd_card_register(card)) < 0) {
1744 		snd_card_free(card);
1745 		return err;
1746 	}
1747 
1748 	pci_set_drvdata(pci, card);
1749 	dev++;
1750 	return 0;
1751 }
1752 
1753 static void __devexit snd_es1938_remove(struct pci_dev *pci)
1754 {
1755 	snd_card_free(pci_get_drvdata(pci));
1756 	pci_set_drvdata(pci, NULL);
1757 }
1758 
1759 static struct pci_driver driver = {
1760 	.name = "ESS ES1938 (Solo-1)",
1761 	.id_table = snd_es1938_ids,
1762 	.probe = snd_es1938_probe,
1763 	.remove = __devexit_p(snd_es1938_remove),
1764 	SND_PCI_PM_CALLBACKS
1765 };
1766 
1767 static int __init alsa_card_es1938_init(void)
1768 {
1769 	return pci_register_driver(&driver);
1770 }
1771 
1772 static void __exit alsa_card_es1938_exit(void)
1773 {
1774 	pci_unregister_driver(&driver);
1775 }
1776 
1777 module_init(alsa_card_es1938_init)
1778 module_exit(alsa_card_es1938_exit)
1779