xref: /openbmc/linux/sound/pci/es1938.c (revision e3d786a3)
1 /*
2  *  Driver for ESS Solo-1 (ES1938, ES1946, ES1969) soundcard
3  *  Copyright (c) by Jaromir Koutek <miri@punknet.cz>,
4  *                   Jaroslav Kysela <perex@perex.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 <linux/init.h>
51 #include <linux/interrupt.h>
52 #include <linux/pci.h>
53 #include <linux/slab.h>
54 #include <linux/gameport.h>
55 #include <linux/module.h>
56 #include <linux/delay.h>
57 #include <linux/dma-mapping.h>
58 #include <linux/io.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 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 IS_REACHABLE(CONFIG_GAMEPORT)
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 bool 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 #define SAVED_REG_SIZE	32 /* max. number of registers to save */
195 
196 struct es1938 {
197 	int irq;
198 
199 	unsigned long io_port;
200 	unsigned long sb_port;
201 	unsigned long vc_port;
202 	unsigned long mpu_port;
203 	unsigned long game_port;
204 	unsigned long ddma_port;
205 
206 	unsigned char irqmask;
207 	unsigned char revision;
208 
209 	struct snd_kcontrol *hw_volume;
210 	struct snd_kcontrol *hw_switch;
211 	struct snd_kcontrol *master_volume;
212 	struct snd_kcontrol *master_switch;
213 
214 	struct pci_dev *pci;
215 	struct snd_card *card;
216 	struct snd_pcm *pcm;
217 	struct snd_pcm_substream *capture_substream;
218 	struct snd_pcm_substream *playback1_substream;
219 	struct snd_pcm_substream *playback2_substream;
220 	struct snd_rawmidi *rmidi;
221 
222 	unsigned int dma1_size;
223 	unsigned int dma2_size;
224 	unsigned int dma1_start;
225 	unsigned int dma2_start;
226 	unsigned int dma1_shift;
227 	unsigned int dma2_shift;
228 	unsigned int last_capture_dmaaddr;
229 	unsigned int active;
230 
231 	spinlock_t reg_lock;
232 	spinlock_t mixer_lock;
233         struct snd_info_entry *proc_entry;
234 
235 #ifdef SUPPORT_JOYSTICK
236 	struct gameport *gameport;
237 #endif
238 #ifdef CONFIG_PM_SLEEP
239 	unsigned char saved_regs[SAVED_REG_SIZE];
240 #endif
241 };
242 
243 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id);
244 
245 static const struct pci_device_id snd_es1938_ids[] = {
246 	{ PCI_VDEVICE(ESS, 0x1969), 0, },   /* Solo-1 */
247 	{ 0, }
248 };
249 
250 MODULE_DEVICE_TABLE(pci, snd_es1938_ids);
251 
252 #define RESET_LOOP_TIMEOUT	0x10000
253 #define WRITE_LOOP_TIMEOUT	0x10000
254 #define GET_LOOP_TIMEOUT	0x01000
255 
256 /* -----------------------------------------------------------------
257  * Write to a mixer register
258  * -----------------------------------------------------------------*/
259 static void snd_es1938_mixer_write(struct es1938 *chip, unsigned char reg, unsigned char val)
260 {
261 	unsigned long flags;
262 	spin_lock_irqsave(&chip->mixer_lock, flags);
263 	outb(reg, SLSB_REG(chip, MIXERADDR));
264 	outb(val, SLSB_REG(chip, MIXERDATA));
265 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
266 	dev_dbg(chip->card->dev, "Mixer reg %02x set to %02x\n", reg, val);
267 }
268 
269 /* -----------------------------------------------------------------
270  * Read from a mixer register
271  * -----------------------------------------------------------------*/
272 static int snd_es1938_mixer_read(struct es1938 *chip, unsigned char reg)
273 {
274 	int data;
275 	unsigned long flags;
276 	spin_lock_irqsave(&chip->mixer_lock, flags);
277 	outb(reg, SLSB_REG(chip, MIXERADDR));
278 	data = inb(SLSB_REG(chip, MIXERDATA));
279 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
280 	dev_dbg(chip->card->dev, "Mixer reg %02x now is %02x\n", reg, data);
281 	return data;
282 }
283 
284 /* -----------------------------------------------------------------
285  * Write to some bits of a mixer register (return old value)
286  * -----------------------------------------------------------------*/
287 static int snd_es1938_mixer_bits(struct es1938 *chip, unsigned char reg,
288 				 unsigned char mask, unsigned char val)
289 {
290 	unsigned long flags;
291 	unsigned char old, new, oval;
292 	spin_lock_irqsave(&chip->mixer_lock, flags);
293 	outb(reg, SLSB_REG(chip, MIXERADDR));
294 	old = inb(SLSB_REG(chip, MIXERDATA));
295 	oval = old & mask;
296 	if (val != oval) {
297 		new = (old & ~mask) | (val & mask);
298 		outb(new, SLSB_REG(chip, MIXERDATA));
299 		dev_dbg(chip->card->dev,
300 			"Mixer reg %02x was %02x, set to %02x\n",
301 			   reg, old, new);
302 	}
303 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
304 	return oval;
305 }
306 
307 /* -----------------------------------------------------------------
308  * Write command to Controller Registers
309  * -----------------------------------------------------------------*/
310 static void snd_es1938_write_cmd(struct es1938 *chip, unsigned char cmd)
311 {
312 	int i;
313 	unsigned char v;
314 	for (i = 0; i < WRITE_LOOP_TIMEOUT; i++) {
315 		if (!(v = inb(SLSB_REG(chip, READSTATUS)) & 0x80)) {
316 			outb(cmd, SLSB_REG(chip, WRITEDATA));
317 			return;
318 		}
319 	}
320 	dev_err(chip->card->dev,
321 		"snd_es1938_write_cmd timeout (0x02%x/0x02%x)\n", cmd, v);
322 }
323 
324 /* -----------------------------------------------------------------
325  * Read the Read Data Buffer
326  * -----------------------------------------------------------------*/
327 static int snd_es1938_get_byte(struct es1938 *chip)
328 {
329 	int i;
330 	unsigned char v;
331 	for (i = GET_LOOP_TIMEOUT; i; i--)
332 		if ((v = inb(SLSB_REG(chip, STATUS))) & 0x80)
333 			return inb(SLSB_REG(chip, READDATA));
334 	dev_err(chip->card->dev, "get_byte timeout: status 0x02%x\n", v);
335 	return -ENODEV;
336 }
337 
338 /* -----------------------------------------------------------------
339  * Write value cmd register
340  * -----------------------------------------------------------------*/
341 static void snd_es1938_write(struct es1938 *chip, unsigned char reg, unsigned char val)
342 {
343 	unsigned long flags;
344 	spin_lock_irqsave(&chip->reg_lock, flags);
345 	snd_es1938_write_cmd(chip, reg);
346 	snd_es1938_write_cmd(chip, val);
347 	spin_unlock_irqrestore(&chip->reg_lock, flags);
348 	dev_dbg(chip->card->dev, "Reg %02x set to %02x\n", reg, val);
349 }
350 
351 /* -----------------------------------------------------------------
352  * Read data from cmd register and return it
353  * -----------------------------------------------------------------*/
354 static unsigned char snd_es1938_read(struct es1938 *chip, unsigned char reg)
355 {
356 	unsigned char val;
357 	unsigned long flags;
358 	spin_lock_irqsave(&chip->reg_lock, flags);
359 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
360 	snd_es1938_write_cmd(chip, reg);
361 	val = snd_es1938_get_byte(chip);
362 	spin_unlock_irqrestore(&chip->reg_lock, flags);
363 	dev_dbg(chip->card->dev, "Reg %02x now is %02x\n", reg, val);
364 	return val;
365 }
366 
367 /* -----------------------------------------------------------------
368  * Write data to cmd register and return old value
369  * -----------------------------------------------------------------*/
370 static int snd_es1938_bits(struct es1938 *chip, unsigned char reg, unsigned char mask,
371 			   unsigned char val)
372 {
373 	unsigned long flags;
374 	unsigned char old, new, oval;
375 	spin_lock_irqsave(&chip->reg_lock, flags);
376 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
377 	snd_es1938_write_cmd(chip, reg);
378 	old = snd_es1938_get_byte(chip);
379 	oval = old & mask;
380 	if (val != oval) {
381 		snd_es1938_write_cmd(chip, reg);
382 		new = (old & ~mask) | (val & mask);
383 		snd_es1938_write_cmd(chip, new);
384 		dev_dbg(chip->card->dev, "Reg %02x was %02x, set to %02x\n",
385 			   reg, old, new);
386 	}
387 	spin_unlock_irqrestore(&chip->reg_lock, flags);
388 	return oval;
389 }
390 
391 /* --------------------------------------------------------------------
392  * Reset the chip
393  * --------------------------------------------------------------------*/
394 static void snd_es1938_reset(struct es1938 *chip)
395 {
396 	int i;
397 
398 	outb(3, SLSB_REG(chip, RESET));
399 	inb(SLSB_REG(chip, RESET));
400 	outb(0, SLSB_REG(chip, RESET));
401 	for (i = 0; i < RESET_LOOP_TIMEOUT; i++) {
402 		if (inb(SLSB_REG(chip, STATUS)) & 0x80) {
403 			if (inb(SLSB_REG(chip, READDATA)) == 0xaa)
404 				goto __next;
405 		}
406 	}
407 	dev_err(chip->card->dev, "ESS Solo-1 reset failed\n");
408 
409      __next:
410 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEEXT);
411 
412 	/* Demand transfer DMA: 4 bytes per DMA request */
413 	snd_es1938_write(chip, ESS_CMD_DMATYPE, 2);
414 
415 	/* Change behaviour of register A1
416 	   4x oversampling
417 	   2nd channel DAC asynchronous */
418 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2MODE, 0x32);
419 	/* enable/select DMA channel and IRQ channel */
420 	snd_es1938_bits(chip, ESS_CMD_IRQCONTROL, 0xf0, 0x50);
421 	snd_es1938_bits(chip, ESS_CMD_DRQCONTROL, 0xf0, 0x50);
422 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEAUDIO1);
423 	/* Set spatializer parameters to recommended values */
424 	snd_es1938_mixer_write(chip, 0x54, 0x8f);
425 	snd_es1938_mixer_write(chip, 0x56, 0x95);
426 	snd_es1938_mixer_write(chip, 0x58, 0x94);
427 	snd_es1938_mixer_write(chip, 0x5a, 0x80);
428 }
429 
430 /* --------------------------------------------------------------------
431  * Reset the FIFOs
432  * --------------------------------------------------------------------*/
433 static void snd_es1938_reset_fifo(struct es1938 *chip)
434 {
435 	outb(2, SLSB_REG(chip, RESET));
436 	outb(0, SLSB_REG(chip, RESET));
437 }
438 
439 static const struct snd_ratnum clocks[2] = {
440 	{
441 		.num = 793800,
442 		.den_min = 1,
443 		.den_max = 128,
444 		.den_step = 1,
445 	},
446 	{
447 		.num = 768000,
448 		.den_min = 1,
449 		.den_max = 128,
450 		.den_step = 1,
451 	}
452 };
453 
454 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
455 	.nrats = 2,
456 	.rats = clocks,
457 };
458 
459 
460 static void snd_es1938_rate_set(struct es1938 *chip,
461 				struct snd_pcm_substream *substream,
462 				int mode)
463 {
464 	unsigned int bits, div0;
465 	struct snd_pcm_runtime *runtime = substream->runtime;
466 	if (runtime->rate_num == clocks[0].num)
467 		bits = 128 - runtime->rate_den;
468 	else
469 		bits = 256 - runtime->rate_den;
470 
471 	/* set filter register */
472 	div0 = 256 - 7160000*20/(8*82*runtime->rate);
473 
474 	if (mode == DAC2) {
475 		snd_es1938_mixer_write(chip, 0x70, bits);
476 		snd_es1938_mixer_write(chip, 0x72, div0);
477 	} else {
478 		snd_es1938_write(chip, 0xA1, bits);
479 		snd_es1938_write(chip, 0xA2, div0);
480 	}
481 }
482 
483 /* --------------------------------------------------------------------
484  * Configure Solo1 builtin DMA Controller
485  * --------------------------------------------------------------------*/
486 
487 static void snd_es1938_playback1_setdma(struct es1938 *chip)
488 {
489 	outb(0x00, SLIO_REG(chip, AUDIO2MODE));
490 	outl(chip->dma2_start, SLIO_REG(chip, AUDIO2DMAADDR));
491 	outw(0, SLIO_REG(chip, AUDIO2DMACOUNT));
492 	outw(chip->dma2_size, SLIO_REG(chip, AUDIO2DMACOUNT));
493 }
494 
495 static void snd_es1938_playback2_setdma(struct es1938 *chip)
496 {
497 	/* Enable DMA controller */
498 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
499 	/* 1. Master reset */
500 	outb(0, SLDM_REG(chip, DMACLEAR));
501 	/* 2. Mask DMA */
502 	outb(1, SLDM_REG(chip, DMAMASK));
503 	outb(0x18, SLDM_REG(chip, DMAMODE));
504 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
505 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
506 	/* 3. Unmask DMA */
507 	outb(0, SLDM_REG(chip, DMAMASK));
508 }
509 
510 static void snd_es1938_capture_setdma(struct es1938 *chip)
511 {
512 	/* Enable DMA controller */
513 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
514 	/* 1. Master reset */
515 	outb(0, SLDM_REG(chip, DMACLEAR));
516 	/* 2. Mask DMA */
517 	outb(1, SLDM_REG(chip, DMAMASK));
518 	outb(0x14, SLDM_REG(chip, DMAMODE));
519 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
520 	chip->last_capture_dmaaddr = chip->dma1_start;
521 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
522 	/* 3. Unmask DMA */
523 	outb(0, SLDM_REG(chip, DMAMASK));
524 }
525 
526 /* ----------------------------------------------------------------------
527  *
528  *                           *** PCM part ***
529  */
530 
531 static int snd_es1938_capture_trigger(struct snd_pcm_substream *substream,
532 				      int cmd)
533 {
534 	struct es1938 *chip = snd_pcm_substream_chip(substream);
535 	int val;
536 	switch (cmd) {
537 	case SNDRV_PCM_TRIGGER_START:
538 	case SNDRV_PCM_TRIGGER_RESUME:
539 		val = 0x0f;
540 		chip->active |= ADC1;
541 		break;
542 	case SNDRV_PCM_TRIGGER_STOP:
543 	case SNDRV_PCM_TRIGGER_SUSPEND:
544 		val = 0x00;
545 		chip->active &= ~ADC1;
546 		break;
547 	default:
548 		return -EINVAL;
549 	}
550 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
551 	return 0;
552 }
553 
554 static int snd_es1938_playback1_trigger(struct snd_pcm_substream *substream,
555 					int cmd)
556 {
557 	struct es1938 *chip = snd_pcm_substream_chip(substream);
558 	switch (cmd) {
559 	case SNDRV_PCM_TRIGGER_START:
560 	case SNDRV_PCM_TRIGGER_RESUME:
561 		/* According to the documentation this should be:
562 		   0x13 but that value may randomly swap stereo channels */
563                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x92);
564                 udelay(10);
565 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x93);
566                 /* This two stage init gives the FIFO -> DAC connection time to
567                  * settle before first data from DMA flows in.  This should ensure
568                  * no swapping of stereo channels.  Report a bug if otherwise :-) */
569 		outb(0x0a, SLIO_REG(chip, AUDIO2MODE));
570 		chip->active |= DAC2;
571 		break;
572 	case SNDRV_PCM_TRIGGER_STOP:
573 	case SNDRV_PCM_TRIGGER_SUSPEND:
574 		outb(0, SLIO_REG(chip, AUDIO2MODE));
575 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0);
576 		chip->active &= ~DAC2;
577 		break;
578 	default:
579 		return -EINVAL;
580 	}
581 	return 0;
582 }
583 
584 static int snd_es1938_playback2_trigger(struct snd_pcm_substream *substream,
585 					int cmd)
586 {
587 	struct es1938 *chip = snd_pcm_substream_chip(substream);
588 	int val;
589 	switch (cmd) {
590 	case SNDRV_PCM_TRIGGER_START:
591 	case SNDRV_PCM_TRIGGER_RESUME:
592 		val = 5;
593 		chip->active |= DAC1;
594 		break;
595 	case SNDRV_PCM_TRIGGER_STOP:
596 	case SNDRV_PCM_TRIGGER_SUSPEND:
597 		val = 0;
598 		chip->active &= ~DAC1;
599 		break;
600 	default:
601 		return -EINVAL;
602 	}
603 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
604 	return 0;
605 }
606 
607 static int snd_es1938_playback_trigger(struct snd_pcm_substream *substream,
608 				       int cmd)
609 {
610 	switch (substream->number) {
611 	case 0:
612 		return snd_es1938_playback1_trigger(substream, cmd);
613 	case 1:
614 		return snd_es1938_playback2_trigger(substream, cmd);
615 	}
616 	snd_BUG();
617 	return -EINVAL;
618 }
619 
620 /* --------------------------------------------------------------------
621  * First channel for Extended Mode Audio 1 ADC Operation
622  * --------------------------------------------------------------------*/
623 static int snd_es1938_capture_prepare(struct snd_pcm_substream *substream)
624 {
625 	struct es1938 *chip = snd_pcm_substream_chip(substream);
626 	struct snd_pcm_runtime *runtime = substream->runtime;
627 	int u, is8, mono;
628 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
629 	unsigned int count = snd_pcm_lib_period_bytes(substream);
630 
631 	chip->dma1_size = size;
632 	chip->dma1_start = runtime->dma_addr;
633 
634 	mono = (runtime->channels > 1) ? 0 : 1;
635 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
636 	u = snd_pcm_format_unsigned(runtime->format);
637 
638 	chip->dma1_shift = 2 - mono - is8;
639 
640 	snd_es1938_reset_fifo(chip);
641 
642 	/* program type */
643 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
644 
645 	/* set clock and counters */
646         snd_es1938_rate_set(chip, substream, ADC1);
647 
648 	count = 0x10000 - count;
649 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
650 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
651 
652 	/* initialize and configure ADC */
653 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, u ? 0x51 : 0x71);
654 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, 0x90 |
655 		       (u ? 0x00 : 0x20) |
656 		       (is8 ? 0x00 : 0x04) |
657 		       (mono ? 0x40 : 0x08));
658 
659 	//	snd_es1938_reset_fifo(chip);
660 
661 	/* 11. configure system interrupt controller and DMA controller */
662 	snd_es1938_capture_setdma(chip);
663 
664 	return 0;
665 }
666 
667 
668 /* ------------------------------------------------------------------------------
669  * Second Audio channel DAC Operation
670  * ------------------------------------------------------------------------------*/
671 static int snd_es1938_playback1_prepare(struct snd_pcm_substream *substream)
672 {
673 	struct es1938 *chip = snd_pcm_substream_chip(substream);
674 	struct snd_pcm_runtime *runtime = substream->runtime;
675 	int u, is8, mono;
676 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
677 	unsigned int count = snd_pcm_lib_period_bytes(substream);
678 
679 	chip->dma2_size = size;
680 	chip->dma2_start = runtime->dma_addr;
681 
682 	mono = (runtime->channels > 1) ? 0 : 1;
683 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
684 	u = snd_pcm_format_unsigned(runtime->format);
685 
686 	chip->dma2_shift = 2 - mono - is8;
687 
688         snd_es1938_reset_fifo(chip);
689 
690 	/* set clock and counters */
691         snd_es1938_rate_set(chip, substream, DAC2);
692 
693 	count >>= 1;
694 	count = 0x10000 - count;
695 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTL, count & 0xff);
696 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTH, count >> 8);
697 
698 	/* initialize and configure Audio 2 DAC */
699 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x40 | (u ? 0 : 4) |
700 			       (mono ? 0 : 2) | (is8 ? 0 : 1));
701 
702 	/* program DMA */
703 	snd_es1938_playback1_setdma(chip);
704 
705 	return 0;
706 }
707 
708 static int snd_es1938_playback2_prepare(struct snd_pcm_substream *substream)
709 {
710 	struct es1938 *chip = snd_pcm_substream_chip(substream);
711 	struct snd_pcm_runtime *runtime = substream->runtime;
712 	int u, is8, mono;
713 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
714 	unsigned int count = snd_pcm_lib_period_bytes(substream);
715 
716 	chip->dma1_size = size;
717 	chip->dma1_start = runtime->dma_addr;
718 
719 	mono = (runtime->channels > 1) ? 0 : 1;
720 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
721 	u = snd_pcm_format_unsigned(runtime->format);
722 
723 	chip->dma1_shift = 2 - mono - is8;
724 
725 	count = 0x10000 - count;
726 
727 	/* reset */
728 	snd_es1938_reset_fifo(chip);
729 
730 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
731 
732 	/* set clock and counters */
733         snd_es1938_rate_set(chip, substream, DAC1);
734 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
735 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
736 
737 	/* initialized and configure DAC */
738         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x80 : 0x00);
739         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x51 : 0x71);
740         snd_es1938_write(chip, ESS_CMD_SETFORMAT2,
741 			 0x90 | (mono ? 0x40 : 0x08) |
742 			 (is8 ? 0x00 : 0x04) | (u ? 0x00 : 0x20));
743 
744 	/* program DMA */
745 	snd_es1938_playback2_setdma(chip);
746 
747 	return 0;
748 }
749 
750 static int snd_es1938_playback_prepare(struct snd_pcm_substream *substream)
751 {
752 	switch (substream->number) {
753 	case 0:
754 		return snd_es1938_playback1_prepare(substream);
755 	case 1:
756 		return snd_es1938_playback2_prepare(substream);
757 	}
758 	snd_BUG();
759 	return -EINVAL;
760 }
761 
762 /* during the incrementing of dma counters the DMA register reads sometimes
763    returns garbage. To ensure a valid hw pointer, the following checks which
764    should be very unlikely to fail are used:
765    - is the current DMA address in the valid DMA range ?
766    - is the sum of DMA address and DMA counter pointing to the last DMA byte ?
767    One can argue this could differ by one byte depending on which register is
768    updated first, so the implementation below allows for that.
769 */
770 static snd_pcm_uframes_t snd_es1938_capture_pointer(struct snd_pcm_substream *substream)
771 {
772 	struct es1938 *chip = snd_pcm_substream_chip(substream);
773 	size_t ptr;
774 #if 0
775 	size_t old, new;
776 	/* This stuff is *needed*, don't ask why - AB */
777 	old = inw(SLDM_REG(chip, DMACOUNT));
778 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
779 		old = new;
780 	ptr = chip->dma1_size - 1 - new;
781 #else
782 	size_t count;
783 	unsigned int diff;
784 
785 	ptr = inl(SLDM_REG(chip, DMAADDR));
786 	count = inw(SLDM_REG(chip, DMACOUNT));
787 	diff = chip->dma1_start + chip->dma1_size - ptr - count;
788 
789 	if (diff > 3 || ptr < chip->dma1_start
790 	      || ptr >= chip->dma1_start+chip->dma1_size)
791 	  ptr = chip->last_capture_dmaaddr;            /* bad, use last saved */
792 	else
793 	  chip->last_capture_dmaaddr = ptr;            /* good, remember it */
794 
795 	ptr -= chip->dma1_start;
796 #endif
797 	return ptr >> chip->dma1_shift;
798 }
799 
800 static snd_pcm_uframes_t snd_es1938_playback1_pointer(struct snd_pcm_substream *substream)
801 {
802 	struct es1938 *chip = snd_pcm_substream_chip(substream);
803 	size_t ptr;
804 #if 1
805 	ptr = chip->dma2_size - inw(SLIO_REG(chip, AUDIO2DMACOUNT));
806 #else
807 	ptr = inl(SLIO_REG(chip, AUDIO2DMAADDR)) - chip->dma2_start;
808 #endif
809 	return ptr >> chip->dma2_shift;
810 }
811 
812 static snd_pcm_uframes_t snd_es1938_playback2_pointer(struct snd_pcm_substream *substream)
813 {
814 	struct es1938 *chip = snd_pcm_substream_chip(substream);
815 	size_t ptr;
816 	size_t old, new;
817 #if 1
818 	/* This stuff is *needed*, don't ask why - AB */
819 	old = inw(SLDM_REG(chip, DMACOUNT));
820 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
821 		old = new;
822 	ptr = chip->dma1_size - 1 - new;
823 #else
824 	ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
825 #endif
826 	return ptr >> chip->dma1_shift;
827 }
828 
829 static snd_pcm_uframes_t snd_es1938_playback_pointer(struct snd_pcm_substream *substream)
830 {
831 	switch (substream->number) {
832 	case 0:
833 		return snd_es1938_playback1_pointer(substream);
834 	case 1:
835 		return snd_es1938_playback2_pointer(substream);
836 	}
837 	snd_BUG();
838 	return -EINVAL;
839 }
840 
841 static int snd_es1938_capture_copy(struct snd_pcm_substream *substream,
842 				   int channel, unsigned long pos,
843 				   void __user *dst, unsigned long count)
844 {
845 	struct snd_pcm_runtime *runtime = substream->runtime;
846 	struct es1938 *chip = snd_pcm_substream_chip(substream);
847 
848 	if (snd_BUG_ON(pos + count > chip->dma1_size))
849 		return -EINVAL;
850 	if (pos + count < chip->dma1_size) {
851 		if (copy_to_user(dst, runtime->dma_area + pos + 1, count))
852 			return -EFAULT;
853 	} else {
854 		if (copy_to_user(dst, runtime->dma_area + pos + 1, count - 1))
855 			return -EFAULT;
856 		if (put_user(runtime->dma_area[0],
857 			     ((unsigned char __user *)dst) + count - 1))
858 			return -EFAULT;
859 	}
860 	return 0;
861 }
862 
863 static int snd_es1938_capture_copy_kernel(struct snd_pcm_substream *substream,
864 					  int channel, unsigned long pos,
865 					  void *dst, unsigned long count)
866 {
867 	struct snd_pcm_runtime *runtime = substream->runtime;
868 	struct es1938 *chip = snd_pcm_substream_chip(substream);
869 
870 	if (snd_BUG_ON(pos + count > chip->dma1_size))
871 		return -EINVAL;
872 	if (pos + count < chip->dma1_size) {
873 		memcpy(dst, runtime->dma_area + pos + 1, count);
874 	} else {
875 		memcpy(dst, runtime->dma_area + pos + 1, count - 1);
876 		runtime->dma_area[0] = *((unsigned char *)dst + count - 1);
877 	}
878 	return 0;
879 }
880 
881 /*
882  * buffer management
883  */
884 static int snd_es1938_pcm_hw_params(struct snd_pcm_substream *substream,
885 				    struct snd_pcm_hw_params *hw_params)
886 
887 {
888 	int err;
889 
890 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
891 		return err;
892 	return 0;
893 }
894 
895 static int snd_es1938_pcm_hw_free(struct snd_pcm_substream *substream)
896 {
897 	return snd_pcm_lib_free_pages(substream);
898 }
899 
900 /* ----------------------------------------------------------------------
901  * Audio1 Capture (ADC)
902  * ----------------------------------------------------------------------*/
903 static const struct snd_pcm_hardware snd_es1938_capture =
904 {
905 	.info =			(SNDRV_PCM_INFO_INTERLEAVED |
906 				SNDRV_PCM_INFO_BLOCK_TRANSFER),
907 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
908 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
909 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
910 	.rate_min =		6000,
911 	.rate_max =		48000,
912 	.channels_min =		1,
913 	.channels_max =		2,
914         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
915 	.period_bytes_min =	64,
916 	.period_bytes_max =	0x8000,
917 	.periods_min =		1,
918 	.periods_max =		1024,
919 	.fifo_size =		256,
920 };
921 
922 /* -----------------------------------------------------------------------
923  * Audio2 Playback (DAC)
924  * -----------------------------------------------------------------------*/
925 static const struct snd_pcm_hardware snd_es1938_playback =
926 {
927 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
928 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
929 				 SNDRV_PCM_INFO_MMAP_VALID),
930 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
931 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
932 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
933 	.rate_min =		6000,
934 	.rate_max =		48000,
935 	.channels_min =		1,
936 	.channels_max =		2,
937         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
938 	.period_bytes_min =	64,
939 	.period_bytes_max =	0x8000,
940 	.periods_min =		1,
941 	.periods_max =		1024,
942 	.fifo_size =		256,
943 };
944 
945 static int snd_es1938_capture_open(struct snd_pcm_substream *substream)
946 {
947 	struct es1938 *chip = snd_pcm_substream_chip(substream);
948 	struct snd_pcm_runtime *runtime = substream->runtime;
949 
950 	if (chip->playback2_substream)
951 		return -EAGAIN;
952 	chip->capture_substream = substream;
953 	runtime->hw = snd_es1938_capture;
954 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
955 				      &hw_constraints_clocks);
956 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
957 	return 0;
958 }
959 
960 static int snd_es1938_playback_open(struct snd_pcm_substream *substream)
961 {
962 	struct es1938 *chip = snd_pcm_substream_chip(substream);
963 	struct snd_pcm_runtime *runtime = substream->runtime;
964 
965 	switch (substream->number) {
966 	case 0:
967 		chip->playback1_substream = substream;
968 		break;
969 	case 1:
970 		if (chip->capture_substream)
971 			return -EAGAIN;
972 		chip->playback2_substream = substream;
973 		break;
974 	default:
975 		snd_BUG();
976 		return -EINVAL;
977 	}
978 	runtime->hw = snd_es1938_playback;
979 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
980 				      &hw_constraints_clocks);
981 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
982 	return 0;
983 }
984 
985 static int snd_es1938_capture_close(struct snd_pcm_substream *substream)
986 {
987 	struct es1938 *chip = snd_pcm_substream_chip(substream);
988 
989 	chip->capture_substream = NULL;
990 	return 0;
991 }
992 
993 static int snd_es1938_playback_close(struct snd_pcm_substream *substream)
994 {
995 	struct es1938 *chip = snd_pcm_substream_chip(substream);
996 
997 	switch (substream->number) {
998 	case 0:
999 		chip->playback1_substream = NULL;
1000 		break;
1001 	case 1:
1002 		chip->playback2_substream = NULL;
1003 		break;
1004 	default:
1005 		snd_BUG();
1006 		return -EINVAL;
1007 	}
1008 	return 0;
1009 }
1010 
1011 static const struct snd_pcm_ops snd_es1938_playback_ops = {
1012 	.open =		snd_es1938_playback_open,
1013 	.close =	snd_es1938_playback_close,
1014 	.ioctl =	snd_pcm_lib_ioctl,
1015 	.hw_params =	snd_es1938_pcm_hw_params,
1016 	.hw_free =	snd_es1938_pcm_hw_free,
1017 	.prepare =	snd_es1938_playback_prepare,
1018 	.trigger =	snd_es1938_playback_trigger,
1019 	.pointer =	snd_es1938_playback_pointer,
1020 };
1021 
1022 static const struct snd_pcm_ops snd_es1938_capture_ops = {
1023 	.open =		snd_es1938_capture_open,
1024 	.close =	snd_es1938_capture_close,
1025 	.ioctl =	snd_pcm_lib_ioctl,
1026 	.hw_params =	snd_es1938_pcm_hw_params,
1027 	.hw_free =	snd_es1938_pcm_hw_free,
1028 	.prepare =	snd_es1938_capture_prepare,
1029 	.trigger =	snd_es1938_capture_trigger,
1030 	.pointer =	snd_es1938_capture_pointer,
1031 	.copy_user =	snd_es1938_capture_copy,
1032 	.copy_kernel =	snd_es1938_capture_copy_kernel,
1033 };
1034 
1035 static int snd_es1938_new_pcm(struct es1938 *chip, int device)
1036 {
1037 	struct snd_pcm *pcm;
1038 	int err;
1039 
1040 	if ((err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm)) < 0)
1041 		return err;
1042 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1938_playback_ops);
1043 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1938_capture_ops);
1044 
1045 	pcm->private_data = chip;
1046 	pcm->info_flags = 0;
1047 	strcpy(pcm->name, "ESS Solo-1");
1048 
1049 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1050 					      snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1051 
1052 	chip->pcm = pcm;
1053 	return 0;
1054 }
1055 
1056 /* -------------------------------------------------------------------
1057  *
1058  *                       *** Mixer part ***
1059  */
1060 
1061 static int snd_es1938_info_mux(struct snd_kcontrol *kcontrol,
1062 			       struct snd_ctl_elem_info *uinfo)
1063 {
1064 	static const char * const texts[8] = {
1065 		"Mic", "Mic Master", "CD", "AOUT",
1066 		"Mic1", "Mix", "Line", "Master"
1067 	};
1068 
1069 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
1070 }
1071 
1072 static int snd_es1938_get_mux(struct snd_kcontrol *kcontrol,
1073 			      struct snd_ctl_elem_value *ucontrol)
1074 {
1075 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1076 	ucontrol->value.enumerated.item[0] = snd_es1938_mixer_read(chip, 0x1c) & 0x07;
1077 	return 0;
1078 }
1079 
1080 static int snd_es1938_put_mux(struct snd_kcontrol *kcontrol,
1081 			      struct snd_ctl_elem_value *ucontrol)
1082 {
1083 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1084 	unsigned char val = ucontrol->value.enumerated.item[0];
1085 
1086 	if (val > 7)
1087 		return -EINVAL;
1088 	return snd_es1938_mixer_bits(chip, 0x1c, 0x07, val) != val;
1089 }
1090 
1091 #define snd_es1938_info_spatializer_enable	snd_ctl_boolean_mono_info
1092 
1093 static int snd_es1938_get_spatializer_enable(struct snd_kcontrol *kcontrol,
1094 					     struct snd_ctl_elem_value *ucontrol)
1095 {
1096 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1097 	unsigned char val = snd_es1938_mixer_read(chip, 0x50);
1098 	ucontrol->value.integer.value[0] = !!(val & 8);
1099 	return 0;
1100 }
1101 
1102 static int snd_es1938_put_spatializer_enable(struct snd_kcontrol *kcontrol,
1103 					     struct snd_ctl_elem_value *ucontrol)
1104 {
1105 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1106 	unsigned char oval, nval;
1107 	int change;
1108 	nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
1109 	oval = snd_es1938_mixer_read(chip, 0x50) & 0x0c;
1110 	change = nval != oval;
1111 	if (change) {
1112 		snd_es1938_mixer_write(chip, 0x50, nval & ~0x04);
1113 		snd_es1938_mixer_write(chip, 0x50, nval);
1114 	}
1115 	return change;
1116 }
1117 
1118 static int snd_es1938_info_hw_volume(struct snd_kcontrol *kcontrol,
1119 				     struct snd_ctl_elem_info *uinfo)
1120 {
1121 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1122 	uinfo->count = 2;
1123 	uinfo->value.integer.min = 0;
1124 	uinfo->value.integer.max = 63;
1125 	return 0;
1126 }
1127 
1128 static int snd_es1938_get_hw_volume(struct snd_kcontrol *kcontrol,
1129 				    struct snd_ctl_elem_value *ucontrol)
1130 {
1131 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1132 	ucontrol->value.integer.value[0] = snd_es1938_mixer_read(chip, 0x61) & 0x3f;
1133 	ucontrol->value.integer.value[1] = snd_es1938_mixer_read(chip, 0x63) & 0x3f;
1134 	return 0;
1135 }
1136 
1137 #define snd_es1938_info_hw_switch		snd_ctl_boolean_stereo_info
1138 
1139 static int snd_es1938_get_hw_switch(struct snd_kcontrol *kcontrol,
1140 				    struct snd_ctl_elem_value *ucontrol)
1141 {
1142 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1143 	ucontrol->value.integer.value[0] = !(snd_es1938_mixer_read(chip, 0x61) & 0x40);
1144 	ucontrol->value.integer.value[1] = !(snd_es1938_mixer_read(chip, 0x63) & 0x40);
1145 	return 0;
1146 }
1147 
1148 static void snd_es1938_hwv_free(struct snd_kcontrol *kcontrol)
1149 {
1150 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1151 	chip->master_volume = NULL;
1152 	chip->master_switch = NULL;
1153 	chip->hw_volume = NULL;
1154 	chip->hw_switch = NULL;
1155 }
1156 
1157 static int snd_es1938_reg_bits(struct es1938 *chip, unsigned char reg,
1158 			       unsigned char mask, unsigned char val)
1159 {
1160 	if (reg < 0xa0)
1161 		return snd_es1938_mixer_bits(chip, reg, mask, val);
1162 	else
1163 		return snd_es1938_bits(chip, reg, mask, val);
1164 }
1165 
1166 static int snd_es1938_reg_read(struct es1938 *chip, unsigned char reg)
1167 {
1168 	if (reg < 0xa0)
1169 		return snd_es1938_mixer_read(chip, reg);
1170 	else
1171 		return snd_es1938_read(chip, reg);
1172 }
1173 
1174 #define ES1938_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv)    \
1175 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1176   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1177   .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   .tlv = { .p = xtlv } }
1182 #define ES1938_SINGLE(xname, xindex, reg, shift, mask, invert) \
1183 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1184   .info = snd_es1938_info_single, \
1185   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1186   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1187 
1188 static int snd_es1938_info_single(struct snd_kcontrol *kcontrol,
1189 				  struct snd_ctl_elem_info *uinfo)
1190 {
1191 	int mask = (kcontrol->private_value >> 16) & 0xff;
1192 
1193 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1194 	uinfo->count = 1;
1195 	uinfo->value.integer.min = 0;
1196 	uinfo->value.integer.max = mask;
1197 	return 0;
1198 }
1199 
1200 static int snd_es1938_get_single(struct snd_kcontrol *kcontrol,
1201 				 struct snd_ctl_elem_value *ucontrol)
1202 {
1203 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1204 	int reg = kcontrol->private_value & 0xff;
1205 	int shift = (kcontrol->private_value >> 8) & 0xff;
1206 	int mask = (kcontrol->private_value >> 16) & 0xff;
1207 	int invert = (kcontrol->private_value >> 24) & 0xff;
1208 	int val;
1209 
1210 	val = snd_es1938_reg_read(chip, reg);
1211 	ucontrol->value.integer.value[0] = (val >> shift) & mask;
1212 	if (invert)
1213 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1214 	return 0;
1215 }
1216 
1217 static int snd_es1938_put_single(struct snd_kcontrol *kcontrol,
1218 				 struct snd_ctl_elem_value *ucontrol)
1219 {
1220 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1221 	int reg = kcontrol->private_value & 0xff;
1222 	int shift = (kcontrol->private_value >> 8) & 0xff;
1223 	int mask = (kcontrol->private_value >> 16) & 0xff;
1224 	int invert = (kcontrol->private_value >> 24) & 0xff;
1225 	unsigned char val;
1226 
1227 	val = (ucontrol->value.integer.value[0] & mask);
1228 	if (invert)
1229 		val = mask - val;
1230 	mask <<= shift;
1231 	val <<= shift;
1232 	return snd_es1938_reg_bits(chip, reg, mask, val) != val;
1233 }
1234 
1235 #define ES1938_DOUBLE_TLV(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert, xtlv) \
1236 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1237   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1238   .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   .tlv = { .p = xtlv } }
1243 #define ES1938_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1244 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1245   .info = snd_es1938_info_double, \
1246   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1247   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1248 
1249 static int snd_es1938_info_double(struct snd_kcontrol *kcontrol,
1250 				  struct snd_ctl_elem_info *uinfo)
1251 {
1252 	int mask = (kcontrol->private_value >> 24) & 0xff;
1253 
1254 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1255 	uinfo->count = 2;
1256 	uinfo->value.integer.min = 0;
1257 	uinfo->value.integer.max = mask;
1258 	return 0;
1259 }
1260 
1261 static int snd_es1938_get_double(struct snd_kcontrol *kcontrol,
1262 				 struct snd_ctl_elem_value *ucontrol)
1263 {
1264 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1265 	int left_reg = kcontrol->private_value & 0xff;
1266 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1267 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1268 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1269 	int mask = (kcontrol->private_value >> 24) & 0xff;
1270 	int invert = (kcontrol->private_value >> 22) & 1;
1271 	unsigned char left, right;
1272 
1273 	left = snd_es1938_reg_read(chip, left_reg);
1274 	if (left_reg != right_reg)
1275 		right = snd_es1938_reg_read(chip, right_reg);
1276 	else
1277 		right = left;
1278 	ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1279 	ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1280 	if (invert) {
1281 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1282 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1283 	}
1284 	return 0;
1285 }
1286 
1287 static int snd_es1938_put_double(struct snd_kcontrol *kcontrol,
1288 				 struct snd_ctl_elem_value *ucontrol)
1289 {
1290 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1291 	int left_reg = kcontrol->private_value & 0xff;
1292 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1293 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1294 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1295 	int mask = (kcontrol->private_value >> 24) & 0xff;
1296 	int invert = (kcontrol->private_value >> 22) & 1;
1297 	int change;
1298 	unsigned char val1, val2, mask1, mask2;
1299 
1300 	val1 = ucontrol->value.integer.value[0] & mask;
1301 	val2 = ucontrol->value.integer.value[1] & mask;
1302 	if (invert) {
1303 		val1 = mask - val1;
1304 		val2 = mask - val2;
1305 	}
1306 	val1 <<= shift_left;
1307 	val2 <<= shift_right;
1308 	mask1 = mask << shift_left;
1309 	mask2 = mask << shift_right;
1310 	if (left_reg != right_reg) {
1311 		change = 0;
1312 		if (snd_es1938_reg_bits(chip, left_reg, mask1, val1) != val1)
1313 			change = 1;
1314 		if (snd_es1938_reg_bits(chip, right_reg, mask2, val2) != val2)
1315 			change = 1;
1316 	} else {
1317 		change = (snd_es1938_reg_bits(chip, left_reg, mask1 | mask2,
1318 					      val1 | val2) != (val1 | val2));
1319 	}
1320 	return change;
1321 }
1322 
1323 static const DECLARE_TLV_DB_RANGE(db_scale_master,
1324 	0, 54, TLV_DB_SCALE_ITEM(-3600, 50, 1),
1325 	54, 63, TLV_DB_SCALE_ITEM(-900, 100, 0),
1326 );
1327 
1328 static const DECLARE_TLV_DB_RANGE(db_scale_audio1,
1329 	0, 8, TLV_DB_SCALE_ITEM(-3300, 300, 1),
1330 	8, 15, TLV_DB_SCALE_ITEM(-900, 150, 0),
1331 );
1332 
1333 static const DECLARE_TLV_DB_RANGE(db_scale_audio2,
1334 	0, 8, TLV_DB_SCALE_ITEM(-3450, 300, 1),
1335 	8, 15, TLV_DB_SCALE_ITEM(-1050, 150, 0),
1336 );
1337 
1338 static const DECLARE_TLV_DB_RANGE(db_scale_mic,
1339 	0, 8, TLV_DB_SCALE_ITEM(-2400, 300, 1),
1340 	8, 15, TLV_DB_SCALE_ITEM(0, 150, 0),
1341 );
1342 
1343 static const DECLARE_TLV_DB_RANGE(db_scale_line,
1344 	0, 8, TLV_DB_SCALE_ITEM(-3150, 300, 1),
1345 	8, 15, TLV_DB_SCALE_ITEM(-750, 150, 0),
1346 );
1347 
1348 static const DECLARE_TLV_DB_SCALE(db_scale_capture, 0, 150, 0);
1349 
1350 static struct snd_kcontrol_new snd_es1938_controls[] = {
1351 ES1938_DOUBLE_TLV("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0,
1352 		  db_scale_master),
1353 ES1938_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1354 {
1355 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1356 	.name = "Hardware Master Playback Volume",
1357 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1358 	.info = snd_es1938_info_hw_volume,
1359 	.get = snd_es1938_get_hw_volume,
1360 },
1361 {
1362 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1363 	.access = (SNDRV_CTL_ELEM_ACCESS_READ |
1364 		   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1365 	.name = "Hardware Master Playback Switch",
1366 	.info = snd_es1938_info_hw_switch,
1367 	.get = snd_es1938_get_hw_switch,
1368 	.tlv = { .p = db_scale_master },
1369 },
1370 ES1938_SINGLE("Hardware Volume Split", 0, 0x64, 7, 1, 0),
1371 ES1938_DOUBLE_TLV("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0,
1372 		  db_scale_line),
1373 ES1938_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1374 ES1938_DOUBLE_TLV("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0,
1375 		  db_scale_mic),
1376 ES1938_DOUBLE_TLV("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1377 		  db_scale_line),
1378 ES1938_DOUBLE_TLV("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0,
1379 		  db_scale_mic),
1380 ES1938_DOUBLE_TLV("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0,
1381 		  db_scale_line),
1382 ES1938_DOUBLE_TLV("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0,
1383 		  db_scale_capture),
1384 ES1938_SINGLE("Beep Volume", 0, 0x3c, 0, 7, 0),
1385 ES1938_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1386 ES1938_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1387 {
1388 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1389 	.name = "Capture Source",
1390 	.info = snd_es1938_info_mux,
1391 	.get = snd_es1938_get_mux,
1392 	.put = snd_es1938_put_mux,
1393 },
1394 ES1938_DOUBLE_TLV("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1395 		  db_scale_line),
1396 ES1938_DOUBLE_TLV("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0,
1397 		  db_scale_audio2),
1398 ES1938_DOUBLE_TLV("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0,
1399 		  db_scale_mic),
1400 ES1938_DOUBLE_TLV("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0,
1401 		  db_scale_line),
1402 ES1938_DOUBLE_TLV("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0,
1403 		  db_scale_mic),
1404 ES1938_DOUBLE_TLV("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0,
1405 		  db_scale_line),
1406 ES1938_DOUBLE_TLV("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0,
1407 		  db_scale_line),
1408 ES1938_DOUBLE_TLV("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0,
1409 		  db_scale_line),
1410 ES1938_DOUBLE_TLV("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0,
1411 		  db_scale_audio2),
1412 ES1938_DOUBLE_TLV("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0,
1413 		  db_scale_audio1),
1414 ES1938_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1415 {
1416 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1417 	.name = "3D Control - Switch",
1418 	.info = snd_es1938_info_spatializer_enable,
1419 	.get = snd_es1938_get_spatializer_enable,
1420 	.put = snd_es1938_put_spatializer_enable,
1421 },
1422 ES1938_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0)
1423 };
1424 
1425 
1426 /* ---------------------------------------------------------------------------- */
1427 /* ---------------------------------------------------------------------------- */
1428 
1429 /*
1430  * initialize the chip - used by resume callback, too
1431  */
1432 static void snd_es1938_chip_init(struct es1938 *chip)
1433 {
1434 	/* reset chip */
1435 	snd_es1938_reset(chip);
1436 
1437 	/* configure native mode */
1438 
1439 	/* enable bus master */
1440 	pci_set_master(chip->pci);
1441 
1442 	/* disable legacy audio */
1443 	pci_write_config_word(chip->pci, SL_PCI_LEGACYCONTROL, 0x805f);
1444 
1445 	/* set DDMA base */
1446 	pci_write_config_word(chip->pci, SL_PCI_DDMACONTROL, chip->ddma_port | 1);
1447 
1448 	/* set DMA/IRQ policy */
1449 	pci_write_config_dword(chip->pci, SL_PCI_CONFIG, 0);
1450 
1451 	/* enable Audio 1, Audio 2, MPU401 IRQ and HW volume IRQ*/
1452 	outb(0xf0, SLIO_REG(chip, IRQCONTROL));
1453 
1454 	/* reset DMA */
1455 	outb(0, SLDM_REG(chip, DMACLEAR));
1456 }
1457 
1458 #ifdef CONFIG_PM_SLEEP
1459 /*
1460  * PM support
1461  */
1462 
1463 static unsigned char saved_regs[SAVED_REG_SIZE+1] = {
1464 	0x14, 0x1a, 0x1c, 0x3a, 0x3c, 0x3e, 0x36, 0x38,
1465 	0x50, 0x52, 0x60, 0x61, 0x62, 0x63, 0x64, 0x68,
1466 	0x69, 0x6a, 0x6b, 0x6d, 0x6e, 0x6f, 0x7c, 0x7d,
1467 	0xa8, 0xb4,
1468 };
1469 
1470 
1471 static int es1938_suspend(struct device *dev)
1472 {
1473 	struct snd_card *card = dev_get_drvdata(dev);
1474 	struct es1938 *chip = card->private_data;
1475 	unsigned char *s, *d;
1476 
1477 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1478 	snd_pcm_suspend_all(chip->pcm);
1479 
1480 	/* save mixer-related registers */
1481 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++)
1482 		*d = snd_es1938_reg_read(chip, *s);
1483 
1484 	outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
1485 	if (chip->irq >= 0) {
1486 		free_irq(chip->irq, chip);
1487 		chip->irq = -1;
1488 	}
1489 	return 0;
1490 }
1491 
1492 static int es1938_resume(struct device *dev)
1493 {
1494 	struct pci_dev *pci = to_pci_dev(dev);
1495 	struct snd_card *card = dev_get_drvdata(dev);
1496 	struct es1938 *chip = card->private_data;
1497 	unsigned char *s, *d;
1498 
1499 	if (request_irq(pci->irq, snd_es1938_interrupt,
1500 			IRQF_SHARED, KBUILD_MODNAME, chip)) {
1501 		dev_err(dev, "unable to grab IRQ %d, disabling device\n",
1502 			pci->irq);
1503 		snd_card_disconnect(card);
1504 		return -EIO;
1505 	}
1506 	chip->irq = pci->irq;
1507 	snd_es1938_chip_init(chip);
1508 
1509 	/* restore mixer-related registers */
1510 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++) {
1511 		if (*s < 0xa0)
1512 			snd_es1938_mixer_write(chip, *s, *d);
1513 		else
1514 			snd_es1938_write(chip, *s, *d);
1515 	}
1516 
1517 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1518 	return 0;
1519 }
1520 
1521 static SIMPLE_DEV_PM_OPS(es1938_pm, es1938_suspend, es1938_resume);
1522 #define ES1938_PM_OPS	&es1938_pm
1523 #else
1524 #define ES1938_PM_OPS	NULL
1525 #endif /* CONFIG_PM_SLEEP */
1526 
1527 #ifdef SUPPORT_JOYSTICK
1528 static int snd_es1938_create_gameport(struct es1938 *chip)
1529 {
1530 	struct gameport *gp;
1531 
1532 	chip->gameport = gp = gameport_allocate_port();
1533 	if (!gp) {
1534 		dev_err(chip->card->dev,
1535 			"cannot allocate memory for gameport\n");
1536 		return -ENOMEM;
1537 	}
1538 
1539 	gameport_set_name(gp, "ES1938");
1540 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1541 	gameport_set_dev_parent(gp, &chip->pci->dev);
1542 	gp->io = chip->game_port;
1543 
1544 	gameport_register_port(gp);
1545 
1546 	return 0;
1547 }
1548 
1549 static void snd_es1938_free_gameport(struct es1938 *chip)
1550 {
1551 	if (chip->gameport) {
1552 		gameport_unregister_port(chip->gameport);
1553 		chip->gameport = NULL;
1554 	}
1555 }
1556 #else
1557 static inline int snd_es1938_create_gameport(struct es1938 *chip) { return -ENOSYS; }
1558 static inline void snd_es1938_free_gameport(struct es1938 *chip) { }
1559 #endif /* SUPPORT_JOYSTICK */
1560 
1561 static int snd_es1938_free(struct es1938 *chip)
1562 {
1563 	/* disable irqs */
1564 	outb(0x00, SLIO_REG(chip, IRQCONTROL));
1565 	if (chip->rmidi)
1566 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
1567 
1568 	snd_es1938_free_gameport(chip);
1569 
1570 	if (chip->irq >= 0)
1571 		free_irq(chip->irq, chip);
1572 	pci_release_regions(chip->pci);
1573 	pci_disable_device(chip->pci);
1574 	kfree(chip);
1575 	return 0;
1576 }
1577 
1578 static int snd_es1938_dev_free(struct snd_device *device)
1579 {
1580 	struct es1938 *chip = device->device_data;
1581 	return snd_es1938_free(chip);
1582 }
1583 
1584 static int snd_es1938_create(struct snd_card *card,
1585 			     struct pci_dev *pci,
1586 			     struct es1938 **rchip)
1587 {
1588 	struct es1938 *chip;
1589 	int err;
1590 	static struct snd_device_ops ops = {
1591 		.dev_free =	snd_es1938_dev_free,
1592 	};
1593 
1594 	*rchip = NULL;
1595 
1596 	/* enable PCI device */
1597 	if ((err = pci_enable_device(pci)) < 0)
1598 		return err;
1599         /* check, if we can restrict PCI DMA transfers to 24 bits */
1600 	if (dma_set_mask(&pci->dev, DMA_BIT_MASK(24)) < 0 ||
1601 	    dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(24)) < 0) {
1602 		dev_err(card->dev,
1603 			"architecture does not support 24bit PCI busmaster DMA\n");
1604 		pci_disable_device(pci);
1605                 return -ENXIO;
1606         }
1607 
1608 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1609 	if (chip == NULL) {
1610 		pci_disable_device(pci);
1611 		return -ENOMEM;
1612 	}
1613 	spin_lock_init(&chip->reg_lock);
1614 	spin_lock_init(&chip->mixer_lock);
1615 	chip->card = card;
1616 	chip->pci = pci;
1617 	chip->irq = -1;
1618 	if ((err = pci_request_regions(pci, "ESS Solo-1")) < 0) {
1619 		kfree(chip);
1620 		pci_disable_device(pci);
1621 		return err;
1622 	}
1623 	chip->io_port = pci_resource_start(pci, 0);
1624 	chip->sb_port = pci_resource_start(pci, 1);
1625 	chip->vc_port = pci_resource_start(pci, 2);
1626 	chip->mpu_port = pci_resource_start(pci, 3);
1627 	chip->game_port = pci_resource_start(pci, 4);
1628 	if (request_irq(pci->irq, snd_es1938_interrupt, IRQF_SHARED,
1629 			KBUILD_MODNAME, chip)) {
1630 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1631 		snd_es1938_free(chip);
1632 		return -EBUSY;
1633 	}
1634 	chip->irq = pci->irq;
1635 	dev_dbg(card->dev,
1636 		"create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
1637 		   chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);
1638 
1639 	chip->ddma_port = chip->vc_port + 0x00;		/* fix from Thomas Sailer */
1640 
1641 	snd_es1938_chip_init(chip);
1642 
1643 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1644 		snd_es1938_free(chip);
1645 		return err;
1646 	}
1647 
1648 	*rchip = chip;
1649 	return 0;
1650 }
1651 
1652 /* --------------------------------------------------------------------
1653  * Interrupt handler
1654  * -------------------------------------------------------------------- */
1655 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id)
1656 {
1657 	struct es1938 *chip = dev_id;
1658 	unsigned char status, audiostatus;
1659 	int handled = 0;
1660 
1661 	status = inb(SLIO_REG(chip, IRQCONTROL));
1662 #if 0
1663 	dev_dbg(chip->card->dev,
1664 		"Es1938debug - interrupt status: =0x%x\n", status);
1665 #endif
1666 
1667 	/* AUDIO 1 */
1668 	if (status & 0x10) {
1669 #if 0
1670 		dev_dbg(chip->card->dev,
1671 		       "Es1938debug - AUDIO channel 1 interrupt\n");
1672 		dev_dbg(chip->card->dev,
1673 		       "Es1938debug - AUDIO channel 1 DMAC DMA count: %u\n",
1674 		       inw(SLDM_REG(chip, DMACOUNT)));
1675 		dev_dbg(chip->card->dev,
1676 		       "Es1938debug - AUDIO channel 1 DMAC DMA base: %u\n",
1677 		       inl(SLDM_REG(chip, DMAADDR)));
1678 		dev_dbg(chip->card->dev,
1679 		       "Es1938debug - AUDIO channel 1 DMAC DMA status: 0x%x\n",
1680 		       inl(SLDM_REG(chip, DMASTATUS)));
1681 #endif
1682 		/* clear irq */
1683 		handled = 1;
1684 		audiostatus = inb(SLSB_REG(chip, STATUS));
1685 		if (chip->active & ADC1)
1686 			snd_pcm_period_elapsed(chip->capture_substream);
1687 		else if (chip->active & DAC1)
1688 			snd_pcm_period_elapsed(chip->playback2_substream);
1689 	}
1690 
1691 	/* AUDIO 2 */
1692 	if (status & 0x20) {
1693 #if 0
1694 		dev_dbg(chip->card->dev,
1695 		       "Es1938debug - AUDIO channel 2 interrupt\n");
1696 		dev_dbg(chip->card->dev,
1697 		       "Es1938debug - AUDIO channel 2 DMAC DMA count: %u\n",
1698 		       inw(SLIO_REG(chip, AUDIO2DMACOUNT)));
1699 		dev_dbg(chip->card->dev,
1700 		       "Es1938debug - AUDIO channel 2 DMAC DMA base: %u\n",
1701 		       inl(SLIO_REG(chip, AUDIO2DMAADDR)));
1702 
1703 #endif
1704 		/* clear irq */
1705 		handled = 1;
1706 		snd_es1938_mixer_bits(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x80, 0);
1707 		if (chip->active & DAC2)
1708 			snd_pcm_period_elapsed(chip->playback1_substream);
1709 	}
1710 
1711 	/* Hardware volume */
1712 	if (status & 0x40) {
1713 		int split = snd_es1938_mixer_read(chip, 0x64) & 0x80;
1714 		handled = 1;
1715 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
1716 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
1717 		if (!split) {
1718 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1719 				       &chip->master_switch->id);
1720 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1721 				       &chip->master_volume->id);
1722 		}
1723 		/* ack interrupt */
1724 		snd_es1938_mixer_write(chip, 0x66, 0x00);
1725 	}
1726 
1727 	/* MPU401 */
1728 	if (status & 0x80) {
1729 		// the following line is evil! It switches off MIDI interrupt handling after the first interrupt received.
1730 		// replacing the last 0 by 0x40 works for ESS-Solo1, but just doing nothing works as well!
1731 		// andreas@flying-snail.de
1732 		// snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0); /* ack? */
1733 		if (chip->rmidi) {
1734 			handled = 1;
1735 			snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1736 		}
1737 	}
1738 	return IRQ_RETVAL(handled);
1739 }
1740 
1741 #define ES1938_DMA_SIZE 64
1742 
1743 static int snd_es1938_mixer(struct es1938 *chip)
1744 {
1745 	struct snd_card *card;
1746 	unsigned int idx;
1747 	int err;
1748 
1749 	card = chip->card;
1750 
1751 	strcpy(card->mixername, "ESS Solo-1");
1752 
1753 	for (idx = 0; idx < ARRAY_SIZE(snd_es1938_controls); idx++) {
1754 		struct snd_kcontrol *kctl;
1755 		kctl = snd_ctl_new1(&snd_es1938_controls[idx], chip);
1756 		switch (idx) {
1757 			case 0:
1758 				chip->master_volume = kctl;
1759 				kctl->private_free = snd_es1938_hwv_free;
1760 				break;
1761 			case 1:
1762 				chip->master_switch = kctl;
1763 				kctl->private_free = snd_es1938_hwv_free;
1764 				break;
1765 			case 2:
1766 				chip->hw_volume = kctl;
1767 				kctl->private_free = snd_es1938_hwv_free;
1768 				break;
1769 			case 3:
1770 				chip->hw_switch = kctl;
1771 				kctl->private_free = snd_es1938_hwv_free;
1772 				break;
1773 			}
1774 		if ((err = snd_ctl_add(card, kctl)) < 0)
1775 			return err;
1776 	}
1777 	return 0;
1778 }
1779 
1780 
1781 static int snd_es1938_probe(struct pci_dev *pci,
1782 			    const struct pci_device_id *pci_id)
1783 {
1784 	static int dev;
1785 	struct snd_card *card;
1786 	struct es1938 *chip;
1787 	struct snd_opl3 *opl3;
1788 	int idx, err;
1789 
1790 	if (dev >= SNDRV_CARDS)
1791 		return -ENODEV;
1792 	if (!enable[dev]) {
1793 		dev++;
1794 		return -ENOENT;
1795 	}
1796 
1797 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1798 			   0, &card);
1799 	if (err < 0)
1800 		return err;
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 		dev_err(card->dev, "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,
1847 				MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
1848 				-1, &chip->rmidi) < 0) {
1849 		dev_err(card->dev, "unable to initialize MPU-401\n");
1850 	} else {
1851 		// this line is vital for MIDI interrupt handling on ess-solo1
1852 		// andreas@flying-snail.de
1853 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0x40);
1854 	}
1855 
1856 	snd_es1938_create_gameport(chip);
1857 
1858 	if ((err = snd_card_register(card)) < 0) {
1859 		snd_card_free(card);
1860 		return err;
1861 	}
1862 
1863 	pci_set_drvdata(pci, card);
1864 	dev++;
1865 	return 0;
1866 }
1867 
1868 static void snd_es1938_remove(struct pci_dev *pci)
1869 {
1870 	snd_card_free(pci_get_drvdata(pci));
1871 }
1872 
1873 static struct pci_driver es1938_driver = {
1874 	.name = KBUILD_MODNAME,
1875 	.id_table = snd_es1938_ids,
1876 	.probe = snd_es1938_probe,
1877 	.remove = snd_es1938_remove,
1878 	.driver = {
1879 		.pm = ES1938_PM_OPS,
1880 	},
1881 };
1882 
1883 module_pci_driver(es1938_driver);
1884