xref: /openbmc/linux/sound/pci/es1938.c (revision c819e2cf)
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 <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 #include <sound/tlv.h>
65 
66 #include <asm/io.h>
67 
68 MODULE_AUTHOR("Jaromir Koutek <miri@punknet.cz>");
69 MODULE_DESCRIPTION("ESS Solo-1");
70 MODULE_LICENSE("GPL");
71 MODULE_SUPPORTED_DEVICE("{{ESS,ES1938},"
72                 "{ESS,ES1946},"
73                 "{ESS,ES1969},"
74 		"{TerraTec,128i PCI}}");
75 
76 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
77 #define SUPPORT_JOYSTICK 1
78 #endif
79 
80 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
81 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
82 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
83 
84 module_param_array(index, int, NULL, 0444);
85 MODULE_PARM_DESC(index, "Index value for ESS Solo-1 soundcard.");
86 module_param_array(id, charp, NULL, 0444);
87 MODULE_PARM_DESC(id, "ID string for ESS Solo-1 soundcard.");
88 module_param_array(enable, bool, NULL, 0444);
89 MODULE_PARM_DESC(enable, "Enable ESS Solo-1 soundcard.");
90 
91 #define SLIO_REG(chip, x) ((chip)->io_port + ESSIO_REG_##x)
92 
93 #define SLDM_REG(chip, x) ((chip)->ddma_port + ESSDM_REG_##x)
94 
95 #define SLSB_REG(chip, x) ((chip)->sb_port + ESSSB_REG_##x)
96 
97 #define SL_PCI_LEGACYCONTROL		0x40
98 #define SL_PCI_CONFIG			0x50
99 #define SL_PCI_DDMACONTROL		0x60
100 
101 #define ESSIO_REG_AUDIO2DMAADDR		0
102 #define ESSIO_REG_AUDIO2DMACOUNT	4
103 #define ESSIO_REG_AUDIO2MODE		6
104 #define ESSIO_REG_IRQCONTROL		7
105 
106 #define ESSDM_REG_DMAADDR		0x00
107 #define ESSDM_REG_DMACOUNT		0x04
108 #define ESSDM_REG_DMACOMMAND		0x08
109 #define ESSDM_REG_DMASTATUS		0x08
110 #define ESSDM_REG_DMAMODE		0x0b
111 #define ESSDM_REG_DMACLEAR		0x0d
112 #define ESSDM_REG_DMAMASK		0x0f
113 
114 #define ESSSB_REG_FMLOWADDR		0x00
115 #define ESSSB_REG_FMHIGHADDR		0x02
116 #define ESSSB_REG_MIXERADDR		0x04
117 #define ESSSB_REG_MIXERDATA		0x05
118 
119 #define ESSSB_IREG_AUDIO1		0x14
120 #define ESSSB_IREG_MICMIX		0x1a
121 #define ESSSB_IREG_RECSRC		0x1c
122 #define ESSSB_IREG_MASTER		0x32
123 #define ESSSB_IREG_FM			0x36
124 #define ESSSB_IREG_AUXACD		0x38
125 #define ESSSB_IREG_AUXB			0x3a
126 #define ESSSB_IREG_PCSPEAKER		0x3c
127 #define ESSSB_IREG_LINE			0x3e
128 #define ESSSB_IREG_SPATCONTROL		0x50
129 #define ESSSB_IREG_SPATLEVEL		0x52
130 #define ESSSB_IREG_MASTER_LEFT		0x60
131 #define ESSSB_IREG_MASTER_RIGHT		0x62
132 #define ESSSB_IREG_MPU401CONTROL	0x64
133 #define ESSSB_IREG_MICMIXRECORD		0x68
134 #define ESSSB_IREG_AUDIO2RECORD		0x69
135 #define ESSSB_IREG_AUXACDRECORD		0x6a
136 #define ESSSB_IREG_FMRECORD		0x6b
137 #define ESSSB_IREG_AUXBRECORD		0x6c
138 #define ESSSB_IREG_MONO			0x6d
139 #define ESSSB_IREG_LINERECORD		0x6e
140 #define ESSSB_IREG_MONORECORD		0x6f
141 #define ESSSB_IREG_AUDIO2SAMPLE		0x70
142 #define ESSSB_IREG_AUDIO2MODE		0x71
143 #define ESSSB_IREG_AUDIO2FILTER		0x72
144 #define ESSSB_IREG_AUDIO2TCOUNTL	0x74
145 #define ESSSB_IREG_AUDIO2TCOUNTH	0x76
146 #define ESSSB_IREG_AUDIO2CONTROL1	0x78
147 #define ESSSB_IREG_AUDIO2CONTROL2	0x7a
148 #define ESSSB_IREG_AUDIO2		0x7c
149 
150 #define ESSSB_REG_RESET			0x06
151 
152 #define ESSSB_REG_READDATA		0x0a
153 #define ESSSB_REG_WRITEDATA		0x0c
154 #define ESSSB_REG_READSTATUS		0x0c
155 
156 #define ESSSB_REG_STATUS		0x0e
157 
158 #define ESS_CMD_EXTSAMPLERATE		0xa1
159 #define ESS_CMD_FILTERDIV		0xa2
160 #define ESS_CMD_DMACNTRELOADL		0xa4
161 #define ESS_CMD_DMACNTRELOADH		0xa5
162 #define ESS_CMD_ANALOGCONTROL		0xa8
163 #define ESS_CMD_IRQCONTROL		0xb1
164 #define ESS_CMD_DRQCONTROL		0xb2
165 #define ESS_CMD_RECLEVEL		0xb4
166 #define ESS_CMD_SETFORMAT		0xb6
167 #define ESS_CMD_SETFORMAT2		0xb7
168 #define ESS_CMD_DMACONTROL		0xb8
169 #define ESS_CMD_DMATYPE			0xb9
170 #define ESS_CMD_OFFSETLEFT		0xba
171 #define ESS_CMD_OFFSETRIGHT		0xbb
172 #define ESS_CMD_READREG			0xc0
173 #define ESS_CMD_ENABLEEXT		0xc6
174 #define ESS_CMD_PAUSEDMA		0xd0
175 #define ESS_CMD_ENABLEAUDIO1		0xd1
176 #define ESS_CMD_STOPAUDIO1		0xd3
177 #define ESS_CMD_AUDIO1STATUS		0xd8
178 #define ESS_CMD_CONTDMA			0xd4
179 #define ESS_CMD_TESTIRQ			0xf2
180 
181 #define ESS_RECSRC_MIC		0
182 #define ESS_RECSRC_AUXACD	2
183 #define ESS_RECSRC_AUXB		5
184 #define ESS_RECSRC_LINE		6
185 #define ESS_RECSRC_NONE		7
186 
187 #define DAC1 0x01
188 #define ADC1 0x02
189 #define DAC2 0x04
190 
191 /*
192 
193  */
194 
195 #define SAVED_REG_SIZE	32 /* max. number of registers to save */
196 
197 struct es1938 {
198 	int irq;
199 
200 	unsigned long io_port;
201 	unsigned long sb_port;
202 	unsigned long vc_port;
203 	unsigned long mpu_port;
204 	unsigned long game_port;
205 	unsigned long ddma_port;
206 
207 	unsigned char irqmask;
208 	unsigned char revision;
209 
210 	struct snd_kcontrol *hw_volume;
211 	struct snd_kcontrol *hw_switch;
212 	struct snd_kcontrol *master_volume;
213 	struct snd_kcontrol *master_switch;
214 
215 	struct pci_dev *pci;
216 	struct snd_card *card;
217 	struct snd_pcm *pcm;
218 	struct snd_pcm_substream *capture_substream;
219 	struct snd_pcm_substream *playback1_substream;
220 	struct snd_pcm_substream *playback2_substream;
221 	struct snd_rawmidi *rmidi;
222 
223 	unsigned int dma1_size;
224 	unsigned int dma2_size;
225 	unsigned int dma1_start;
226 	unsigned int dma2_start;
227 	unsigned int dma1_shift;
228 	unsigned int dma2_shift;
229 	unsigned int last_capture_dmaaddr;
230 	unsigned int active;
231 
232 	spinlock_t reg_lock;
233 	spinlock_t mixer_lock;
234         struct snd_info_entry *proc_entry;
235 
236 #ifdef SUPPORT_JOYSTICK
237 	struct gameport *gameport;
238 #endif
239 #ifdef CONFIG_PM_SLEEP
240 	unsigned char saved_regs[SAVED_REG_SIZE];
241 #endif
242 };
243 
244 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id);
245 
246 static const struct pci_device_id snd_es1938_ids[] = {
247 	{ PCI_VDEVICE(ESS, 0x1969), 0, },   /* Solo-1 */
248 	{ 0, }
249 };
250 
251 MODULE_DEVICE_TABLE(pci, snd_es1938_ids);
252 
253 #define RESET_LOOP_TIMEOUT	0x10000
254 #define WRITE_LOOP_TIMEOUT	0x10000
255 #define GET_LOOP_TIMEOUT	0x01000
256 
257 /* -----------------------------------------------------------------
258  * Write to a mixer register
259  * -----------------------------------------------------------------*/
260 static void snd_es1938_mixer_write(struct es1938 *chip, unsigned char reg, unsigned char val)
261 {
262 	unsigned long flags;
263 	spin_lock_irqsave(&chip->mixer_lock, flags);
264 	outb(reg, SLSB_REG(chip, MIXERADDR));
265 	outb(val, SLSB_REG(chip, MIXERDATA));
266 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
267 	dev_dbg(chip->card->dev, "Mixer reg %02x set to %02x\n", reg, val);
268 }
269 
270 /* -----------------------------------------------------------------
271  * Read from a mixer register
272  * -----------------------------------------------------------------*/
273 static int snd_es1938_mixer_read(struct es1938 *chip, unsigned char reg)
274 {
275 	int data;
276 	unsigned long flags;
277 	spin_lock_irqsave(&chip->mixer_lock, flags);
278 	outb(reg, SLSB_REG(chip, MIXERADDR));
279 	data = inb(SLSB_REG(chip, MIXERDATA));
280 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
281 	dev_dbg(chip->card->dev, "Mixer reg %02x now is %02x\n", reg, data);
282 	return data;
283 }
284 
285 /* -----------------------------------------------------------------
286  * Write to some bits of a mixer register (return old value)
287  * -----------------------------------------------------------------*/
288 static int snd_es1938_mixer_bits(struct es1938 *chip, unsigned char reg,
289 				 unsigned char mask, unsigned char val)
290 {
291 	unsigned long flags;
292 	unsigned char old, new, oval;
293 	spin_lock_irqsave(&chip->mixer_lock, flags);
294 	outb(reg, SLSB_REG(chip, MIXERADDR));
295 	old = inb(SLSB_REG(chip, MIXERDATA));
296 	oval = old & mask;
297 	if (val != oval) {
298 		new = (old & ~mask) | (val & mask);
299 		outb(new, SLSB_REG(chip, MIXERDATA));
300 		dev_dbg(chip->card->dev,
301 			"Mixer reg %02x was %02x, set to %02x\n",
302 			   reg, old, new);
303 	}
304 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
305 	return oval;
306 }
307 
308 /* -----------------------------------------------------------------
309  * Write command to Controller Registers
310  * -----------------------------------------------------------------*/
311 static void snd_es1938_write_cmd(struct es1938 *chip, unsigned char cmd)
312 {
313 	int i;
314 	unsigned char v;
315 	for (i = 0; i < WRITE_LOOP_TIMEOUT; i++) {
316 		if (!(v = inb(SLSB_REG(chip, READSTATUS)) & 0x80)) {
317 			outb(cmd, SLSB_REG(chip, WRITEDATA));
318 			return;
319 		}
320 	}
321 	dev_err(chip->card->dev,
322 		"snd_es1938_write_cmd timeout (0x02%x/0x02%x)\n", cmd, v);
323 }
324 
325 /* -----------------------------------------------------------------
326  * Read the Read Data Buffer
327  * -----------------------------------------------------------------*/
328 static int snd_es1938_get_byte(struct es1938 *chip)
329 {
330 	int i;
331 	unsigned char v;
332 	for (i = GET_LOOP_TIMEOUT; i; i--)
333 		if ((v = inb(SLSB_REG(chip, STATUS))) & 0x80)
334 			return inb(SLSB_REG(chip, READDATA));
335 	dev_err(chip->card->dev, "get_byte timeout: status 0x02%x\n", v);
336 	return -ENODEV;
337 }
338 
339 /* -----------------------------------------------------------------
340  * Write value cmd register
341  * -----------------------------------------------------------------*/
342 static void snd_es1938_write(struct es1938 *chip, unsigned char reg, unsigned char val)
343 {
344 	unsigned long flags;
345 	spin_lock_irqsave(&chip->reg_lock, flags);
346 	snd_es1938_write_cmd(chip, reg);
347 	snd_es1938_write_cmd(chip, val);
348 	spin_unlock_irqrestore(&chip->reg_lock, flags);
349 	dev_dbg(chip->card->dev, "Reg %02x set to %02x\n", reg, val);
350 }
351 
352 /* -----------------------------------------------------------------
353  * Read data from cmd register and return it
354  * -----------------------------------------------------------------*/
355 static unsigned char snd_es1938_read(struct es1938 *chip, unsigned char reg)
356 {
357 	unsigned char val;
358 	unsigned long flags;
359 	spin_lock_irqsave(&chip->reg_lock, flags);
360 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
361 	snd_es1938_write_cmd(chip, reg);
362 	val = snd_es1938_get_byte(chip);
363 	spin_unlock_irqrestore(&chip->reg_lock, flags);
364 	dev_dbg(chip->card->dev, "Reg %02x now is %02x\n", reg, val);
365 	return val;
366 }
367 
368 /* -----------------------------------------------------------------
369  * Write data to cmd register and return old value
370  * -----------------------------------------------------------------*/
371 static int snd_es1938_bits(struct es1938 *chip, unsigned char reg, unsigned char mask,
372 			   unsigned char val)
373 {
374 	unsigned long flags;
375 	unsigned char old, new, oval;
376 	spin_lock_irqsave(&chip->reg_lock, flags);
377 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
378 	snd_es1938_write_cmd(chip, reg);
379 	old = snd_es1938_get_byte(chip);
380 	oval = old & mask;
381 	if (val != oval) {
382 		snd_es1938_write_cmd(chip, reg);
383 		new = (old & ~mask) | (val & mask);
384 		snd_es1938_write_cmd(chip, new);
385 		dev_dbg(chip->card->dev, "Reg %02x was %02x, set to %02x\n",
386 			   reg, old, new);
387 	}
388 	spin_unlock_irqrestore(&chip->reg_lock, flags);
389 	return oval;
390 }
391 
392 /* --------------------------------------------------------------------
393  * Reset the chip
394  * --------------------------------------------------------------------*/
395 static void snd_es1938_reset(struct es1938 *chip)
396 {
397 	int i;
398 
399 	outb(3, SLSB_REG(chip, RESET));
400 	inb(SLSB_REG(chip, RESET));
401 	outb(0, SLSB_REG(chip, RESET));
402 	for (i = 0; i < RESET_LOOP_TIMEOUT; i++) {
403 		if (inb(SLSB_REG(chip, STATUS)) & 0x80) {
404 			if (inb(SLSB_REG(chip, READDATA)) == 0xaa)
405 				goto __next;
406 		}
407 	}
408 	dev_err(chip->card->dev, "ESS Solo-1 reset failed\n");
409 
410      __next:
411 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEEXT);
412 
413 	/* Demand transfer DMA: 4 bytes per DMA request */
414 	snd_es1938_write(chip, ESS_CMD_DMATYPE, 2);
415 
416 	/* Change behaviour of register A1
417 	   4x oversampling
418 	   2nd channel DAC asynchronous */
419 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2MODE, 0x32);
420 	/* enable/select DMA channel and IRQ channel */
421 	snd_es1938_bits(chip, ESS_CMD_IRQCONTROL, 0xf0, 0x50);
422 	snd_es1938_bits(chip, ESS_CMD_DRQCONTROL, 0xf0, 0x50);
423 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEAUDIO1);
424 	/* Set spatializer parameters to recommended values */
425 	snd_es1938_mixer_write(chip, 0x54, 0x8f);
426 	snd_es1938_mixer_write(chip, 0x56, 0x95);
427 	snd_es1938_mixer_write(chip, 0x58, 0x94);
428 	snd_es1938_mixer_write(chip, 0x5a, 0x80);
429 }
430 
431 /* --------------------------------------------------------------------
432  * Reset the FIFOs
433  * --------------------------------------------------------------------*/
434 static void snd_es1938_reset_fifo(struct es1938 *chip)
435 {
436 	outb(2, SLSB_REG(chip, RESET));
437 	outb(0, SLSB_REG(chip, RESET));
438 }
439 
440 static struct snd_ratnum clocks[2] = {
441 	{
442 		.num = 793800,
443 		.den_min = 1,
444 		.den_max = 128,
445 		.den_step = 1,
446 	},
447 	{
448 		.num = 768000,
449 		.den_min = 1,
450 		.den_max = 128,
451 		.den_step = 1,
452 	}
453 };
454 
455 static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
456 	.nrats = 2,
457 	.rats = clocks,
458 };
459 
460 
461 static void snd_es1938_rate_set(struct es1938 *chip,
462 				struct snd_pcm_substream *substream,
463 				int mode)
464 {
465 	unsigned int bits, div0;
466 	struct snd_pcm_runtime *runtime = substream->runtime;
467 	if (runtime->rate_num == clocks[0].num)
468 		bits = 128 - runtime->rate_den;
469 	else
470 		bits = 256 - runtime->rate_den;
471 
472 	/* set filter register */
473 	div0 = 256 - 7160000*20/(8*82*runtime->rate);
474 
475 	if (mode == DAC2) {
476 		snd_es1938_mixer_write(chip, 0x70, bits);
477 		snd_es1938_mixer_write(chip, 0x72, div0);
478 	} else {
479 		snd_es1938_write(chip, 0xA1, bits);
480 		snd_es1938_write(chip, 0xA2, div0);
481 	}
482 }
483 
484 /* --------------------------------------------------------------------
485  * Configure Solo1 builtin DMA Controller
486  * --------------------------------------------------------------------*/
487 
488 static void snd_es1938_playback1_setdma(struct es1938 *chip)
489 {
490 	outb(0x00, SLIO_REG(chip, AUDIO2MODE));
491 	outl(chip->dma2_start, SLIO_REG(chip, AUDIO2DMAADDR));
492 	outw(0, SLIO_REG(chip, AUDIO2DMACOUNT));
493 	outw(chip->dma2_size, SLIO_REG(chip, AUDIO2DMACOUNT));
494 }
495 
496 static void snd_es1938_playback2_setdma(struct es1938 *chip)
497 {
498 	/* Enable DMA controller */
499 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
500 	/* 1. Master reset */
501 	outb(0, SLDM_REG(chip, DMACLEAR));
502 	/* 2. Mask DMA */
503 	outb(1, SLDM_REG(chip, DMAMASK));
504 	outb(0x18, SLDM_REG(chip, DMAMODE));
505 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
506 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
507 	/* 3. Unmask DMA */
508 	outb(0, SLDM_REG(chip, DMAMASK));
509 }
510 
511 static void snd_es1938_capture_setdma(struct es1938 *chip)
512 {
513 	/* Enable DMA controller */
514 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
515 	/* 1. Master reset */
516 	outb(0, SLDM_REG(chip, DMACLEAR));
517 	/* 2. Mask DMA */
518 	outb(1, SLDM_REG(chip, DMAMASK));
519 	outb(0x14, SLDM_REG(chip, DMAMODE));
520 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
521 	chip->last_capture_dmaaddr = chip->dma1_start;
522 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
523 	/* 3. Unmask DMA */
524 	outb(0, SLDM_REG(chip, DMAMASK));
525 }
526 
527 /* ----------------------------------------------------------------------
528  *
529  *                           *** PCM part ***
530  */
531 
532 static int snd_es1938_capture_trigger(struct snd_pcm_substream *substream,
533 				      int cmd)
534 {
535 	struct es1938 *chip = snd_pcm_substream_chip(substream);
536 	int val;
537 	switch (cmd) {
538 	case SNDRV_PCM_TRIGGER_START:
539 	case SNDRV_PCM_TRIGGER_RESUME:
540 		val = 0x0f;
541 		chip->active |= ADC1;
542 		break;
543 	case SNDRV_PCM_TRIGGER_STOP:
544 	case SNDRV_PCM_TRIGGER_SUSPEND:
545 		val = 0x00;
546 		chip->active &= ~ADC1;
547 		break;
548 	default:
549 		return -EINVAL;
550 	}
551 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
552 	return 0;
553 }
554 
555 static int snd_es1938_playback1_trigger(struct snd_pcm_substream *substream,
556 					int cmd)
557 {
558 	struct es1938 *chip = snd_pcm_substream_chip(substream);
559 	switch (cmd) {
560 	case SNDRV_PCM_TRIGGER_START:
561 	case SNDRV_PCM_TRIGGER_RESUME:
562 		/* According to the documentation this should be:
563 		   0x13 but that value may randomly swap stereo channels */
564                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x92);
565                 udelay(10);
566 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x93);
567                 /* This two stage init gives the FIFO -> DAC connection time to
568                  * settle before first data from DMA flows in.  This should ensure
569                  * no swapping of stereo channels.  Report a bug if otherwise :-) */
570 		outb(0x0a, SLIO_REG(chip, AUDIO2MODE));
571 		chip->active |= DAC2;
572 		break;
573 	case SNDRV_PCM_TRIGGER_STOP:
574 	case SNDRV_PCM_TRIGGER_SUSPEND:
575 		outb(0, SLIO_REG(chip, AUDIO2MODE));
576 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0);
577 		chip->active &= ~DAC2;
578 		break;
579 	default:
580 		return -EINVAL;
581 	}
582 	return 0;
583 }
584 
585 static int snd_es1938_playback2_trigger(struct snd_pcm_substream *substream,
586 					int cmd)
587 {
588 	struct es1938 *chip = snd_pcm_substream_chip(substream);
589 	int val;
590 	switch (cmd) {
591 	case SNDRV_PCM_TRIGGER_START:
592 	case SNDRV_PCM_TRIGGER_RESUME:
593 		val = 5;
594 		chip->active |= DAC1;
595 		break;
596 	case SNDRV_PCM_TRIGGER_STOP:
597 	case SNDRV_PCM_TRIGGER_SUSPEND:
598 		val = 0;
599 		chip->active &= ~DAC1;
600 		break;
601 	default:
602 		return -EINVAL;
603 	}
604 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
605 	return 0;
606 }
607 
608 static int snd_es1938_playback_trigger(struct snd_pcm_substream *substream,
609 				       int cmd)
610 {
611 	switch (substream->number) {
612 	case 0:
613 		return snd_es1938_playback1_trigger(substream, cmd);
614 	case 1:
615 		return snd_es1938_playback2_trigger(substream, cmd);
616 	}
617 	snd_BUG();
618 	return -EINVAL;
619 }
620 
621 /* --------------------------------------------------------------------
622  * First channel for Extended Mode Audio 1 ADC Operation
623  * --------------------------------------------------------------------*/
624 static int snd_es1938_capture_prepare(struct snd_pcm_substream *substream)
625 {
626 	struct es1938 *chip = snd_pcm_substream_chip(substream);
627 	struct snd_pcm_runtime *runtime = substream->runtime;
628 	int u, is8, mono;
629 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
630 	unsigned int count = snd_pcm_lib_period_bytes(substream);
631 
632 	chip->dma1_size = size;
633 	chip->dma1_start = runtime->dma_addr;
634 
635 	mono = (runtime->channels > 1) ? 0 : 1;
636 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
637 	u = snd_pcm_format_unsigned(runtime->format);
638 
639 	chip->dma1_shift = 2 - mono - is8;
640 
641 	snd_es1938_reset_fifo(chip);
642 
643 	/* program type */
644 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
645 
646 	/* set clock and counters */
647         snd_es1938_rate_set(chip, substream, ADC1);
648 
649 	count = 0x10000 - count;
650 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
651 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
652 
653 	/* initialize and configure ADC */
654 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, u ? 0x51 : 0x71);
655 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, 0x90 |
656 		       (u ? 0x00 : 0x20) |
657 		       (is8 ? 0x00 : 0x04) |
658 		       (mono ? 0x40 : 0x08));
659 
660 	//	snd_es1938_reset_fifo(chip);
661 
662 	/* 11. configure system interrupt controller and DMA controller */
663 	snd_es1938_capture_setdma(chip);
664 
665 	return 0;
666 }
667 
668 
669 /* ------------------------------------------------------------------------------
670  * Second Audio channel DAC Operation
671  * ------------------------------------------------------------------------------*/
672 static int snd_es1938_playback1_prepare(struct snd_pcm_substream *substream)
673 {
674 	struct es1938 *chip = snd_pcm_substream_chip(substream);
675 	struct snd_pcm_runtime *runtime = substream->runtime;
676 	int u, is8, mono;
677 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
678 	unsigned int count = snd_pcm_lib_period_bytes(substream);
679 
680 	chip->dma2_size = size;
681 	chip->dma2_start = runtime->dma_addr;
682 
683 	mono = (runtime->channels > 1) ? 0 : 1;
684 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
685 	u = snd_pcm_format_unsigned(runtime->format);
686 
687 	chip->dma2_shift = 2 - mono - is8;
688 
689         snd_es1938_reset_fifo(chip);
690 
691 	/* set clock and counters */
692         snd_es1938_rate_set(chip, substream, DAC2);
693 
694 	count >>= 1;
695 	count = 0x10000 - count;
696 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTL, count & 0xff);
697 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTH, count >> 8);
698 
699 	/* initialize and configure Audio 2 DAC */
700 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x40 | (u ? 0 : 4) |
701 			       (mono ? 0 : 2) | (is8 ? 0 : 1));
702 
703 	/* program DMA */
704 	snd_es1938_playback1_setdma(chip);
705 
706 	return 0;
707 }
708 
709 static int snd_es1938_playback2_prepare(struct snd_pcm_substream *substream)
710 {
711 	struct es1938 *chip = snd_pcm_substream_chip(substream);
712 	struct snd_pcm_runtime *runtime = substream->runtime;
713 	int u, is8, mono;
714 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
715 	unsigned int count = snd_pcm_lib_period_bytes(substream);
716 
717 	chip->dma1_size = size;
718 	chip->dma1_start = runtime->dma_addr;
719 
720 	mono = (runtime->channels > 1) ? 0 : 1;
721 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
722 	u = snd_pcm_format_unsigned(runtime->format);
723 
724 	chip->dma1_shift = 2 - mono - is8;
725 
726 	count = 0x10000 - count;
727 
728 	/* reset */
729 	snd_es1938_reset_fifo(chip);
730 
731 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
732 
733 	/* set clock and counters */
734         snd_es1938_rate_set(chip, substream, DAC1);
735 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
736 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
737 
738 	/* initialized and configure DAC */
739         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x80 : 0x00);
740         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x51 : 0x71);
741         snd_es1938_write(chip, ESS_CMD_SETFORMAT2,
742 			 0x90 | (mono ? 0x40 : 0x08) |
743 			 (is8 ? 0x00 : 0x04) | (u ? 0x00 : 0x20));
744 
745 	/* program DMA */
746 	snd_es1938_playback2_setdma(chip);
747 
748 	return 0;
749 }
750 
751 static int snd_es1938_playback_prepare(struct snd_pcm_substream *substream)
752 {
753 	switch (substream->number) {
754 	case 0:
755 		return snd_es1938_playback1_prepare(substream);
756 	case 1:
757 		return snd_es1938_playback2_prepare(substream);
758 	}
759 	snd_BUG();
760 	return -EINVAL;
761 }
762 
763 /* during the incrementing of dma counters the DMA register reads sometimes
764    returns garbage. To ensure a valid hw pointer, the following checks which
765    should be very unlikely to fail are used:
766    - is the current DMA address in the valid DMA range ?
767    - is the sum of DMA address and DMA counter pointing to the last DMA byte ?
768    One can argue this could differ by one byte depending on which register is
769    updated first, so the implementation below allows for that.
770 */
771 static snd_pcm_uframes_t snd_es1938_capture_pointer(struct snd_pcm_substream *substream)
772 {
773 	struct es1938 *chip = snd_pcm_substream_chip(substream);
774 	size_t ptr;
775 #if 0
776 	size_t old, new;
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 	size_t count;
784 	unsigned int diff;
785 
786 	ptr = inl(SLDM_REG(chip, DMAADDR));
787 	count = inw(SLDM_REG(chip, DMACOUNT));
788 	diff = chip->dma1_start + chip->dma1_size - ptr - count;
789 
790 	if (diff > 3 || ptr < chip->dma1_start
791 	      || ptr >= chip->dma1_start+chip->dma1_size)
792 	  ptr = chip->last_capture_dmaaddr;            /* bad, use last saved */
793 	else
794 	  chip->last_capture_dmaaddr = ptr;            /* good, remember it */
795 
796 	ptr -= chip->dma1_start;
797 #endif
798 	return ptr >> chip->dma1_shift;
799 }
800 
801 static snd_pcm_uframes_t snd_es1938_playback1_pointer(struct snd_pcm_substream *substream)
802 {
803 	struct es1938 *chip = snd_pcm_substream_chip(substream);
804 	size_t ptr;
805 #if 1
806 	ptr = chip->dma2_size - inw(SLIO_REG(chip, AUDIO2DMACOUNT));
807 #else
808 	ptr = inl(SLIO_REG(chip, AUDIO2DMAADDR)) - chip->dma2_start;
809 #endif
810 	return ptr >> chip->dma2_shift;
811 }
812 
813 static snd_pcm_uframes_t snd_es1938_playback2_pointer(struct snd_pcm_substream *substream)
814 {
815 	struct es1938 *chip = snd_pcm_substream_chip(substream);
816 	size_t ptr;
817 	size_t old, new;
818 #if 1
819 	/* This stuff is *needed*, don't ask why - AB */
820 	old = inw(SLDM_REG(chip, DMACOUNT));
821 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
822 		old = new;
823 	ptr = chip->dma1_size - 1 - new;
824 #else
825 	ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
826 #endif
827 	return ptr >> chip->dma1_shift;
828 }
829 
830 static snd_pcm_uframes_t snd_es1938_playback_pointer(struct snd_pcm_substream *substream)
831 {
832 	switch (substream->number) {
833 	case 0:
834 		return snd_es1938_playback1_pointer(substream);
835 	case 1:
836 		return snd_es1938_playback2_pointer(substream);
837 	}
838 	snd_BUG();
839 	return -EINVAL;
840 }
841 
842 static int snd_es1938_capture_copy(struct snd_pcm_substream *substream,
843 				   int channel,
844 				   snd_pcm_uframes_t pos,
845 				   void __user *dst,
846 				   snd_pcm_uframes_t count)
847 {
848 	struct snd_pcm_runtime *runtime = substream->runtime;
849 	struct es1938 *chip = snd_pcm_substream_chip(substream);
850 	pos <<= chip->dma1_shift;
851 	count <<= chip->dma1_shift;
852 	if (snd_BUG_ON(pos + count > chip->dma1_size))
853 		return -EINVAL;
854 	if (pos + count < chip->dma1_size) {
855 		if (copy_to_user(dst, runtime->dma_area + pos + 1, count))
856 			return -EFAULT;
857 	} else {
858 		if (copy_to_user(dst, runtime->dma_area + pos + 1, count - 1))
859 			return -EFAULT;
860 		if (put_user(runtime->dma_area[0], ((unsigned char __user *)dst) + count - 1))
861 			return -EFAULT;
862 	}
863 	return 0;
864 }
865 
866 /*
867  * buffer management
868  */
869 static int snd_es1938_pcm_hw_params(struct snd_pcm_substream *substream,
870 				    struct snd_pcm_hw_params *hw_params)
871 
872 {
873 	int err;
874 
875 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
876 		return err;
877 	return 0;
878 }
879 
880 static int snd_es1938_pcm_hw_free(struct snd_pcm_substream *substream)
881 {
882 	return snd_pcm_lib_free_pages(substream);
883 }
884 
885 /* ----------------------------------------------------------------------
886  * Audio1 Capture (ADC)
887  * ----------------------------------------------------------------------*/
888 static struct snd_pcm_hardware snd_es1938_capture =
889 {
890 	.info =			(SNDRV_PCM_INFO_INTERLEAVED |
891 				SNDRV_PCM_INFO_BLOCK_TRANSFER),
892 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
893 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
894 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
895 	.rate_min =		6000,
896 	.rate_max =		48000,
897 	.channels_min =		1,
898 	.channels_max =		2,
899         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
900 	.period_bytes_min =	64,
901 	.period_bytes_max =	0x8000,
902 	.periods_min =		1,
903 	.periods_max =		1024,
904 	.fifo_size =		256,
905 };
906 
907 /* -----------------------------------------------------------------------
908  * Audio2 Playback (DAC)
909  * -----------------------------------------------------------------------*/
910 static struct snd_pcm_hardware snd_es1938_playback =
911 {
912 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
913 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
914 				 SNDRV_PCM_INFO_MMAP_VALID),
915 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
916 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
917 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
918 	.rate_min =		6000,
919 	.rate_max =		48000,
920 	.channels_min =		1,
921 	.channels_max =		2,
922         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
923 	.period_bytes_min =	64,
924 	.period_bytes_max =	0x8000,
925 	.periods_min =		1,
926 	.periods_max =		1024,
927 	.fifo_size =		256,
928 };
929 
930 static int snd_es1938_capture_open(struct snd_pcm_substream *substream)
931 {
932 	struct es1938 *chip = snd_pcm_substream_chip(substream);
933 	struct snd_pcm_runtime *runtime = substream->runtime;
934 
935 	if (chip->playback2_substream)
936 		return -EAGAIN;
937 	chip->capture_substream = substream;
938 	runtime->hw = snd_es1938_capture;
939 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
940 				      &hw_constraints_clocks);
941 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
942 	return 0;
943 }
944 
945 static int snd_es1938_playback_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 	switch (substream->number) {
951 	case 0:
952 		chip->playback1_substream = substream;
953 		break;
954 	case 1:
955 		if (chip->capture_substream)
956 			return -EAGAIN;
957 		chip->playback2_substream = substream;
958 		break;
959 	default:
960 		snd_BUG();
961 		return -EINVAL;
962 	}
963 	runtime->hw = snd_es1938_playback;
964 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
965 				      &hw_constraints_clocks);
966 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
967 	return 0;
968 }
969 
970 static int snd_es1938_capture_close(struct snd_pcm_substream *substream)
971 {
972 	struct es1938 *chip = snd_pcm_substream_chip(substream);
973 
974 	chip->capture_substream = NULL;
975 	return 0;
976 }
977 
978 static int snd_es1938_playback_close(struct snd_pcm_substream *substream)
979 {
980 	struct es1938 *chip = snd_pcm_substream_chip(substream);
981 
982 	switch (substream->number) {
983 	case 0:
984 		chip->playback1_substream = NULL;
985 		break;
986 	case 1:
987 		chip->playback2_substream = NULL;
988 		break;
989 	default:
990 		snd_BUG();
991 		return -EINVAL;
992 	}
993 	return 0;
994 }
995 
996 static struct snd_pcm_ops snd_es1938_playback_ops = {
997 	.open =		snd_es1938_playback_open,
998 	.close =	snd_es1938_playback_close,
999 	.ioctl =	snd_pcm_lib_ioctl,
1000 	.hw_params =	snd_es1938_pcm_hw_params,
1001 	.hw_free =	snd_es1938_pcm_hw_free,
1002 	.prepare =	snd_es1938_playback_prepare,
1003 	.trigger =	snd_es1938_playback_trigger,
1004 	.pointer =	snd_es1938_playback_pointer,
1005 };
1006 
1007 static struct snd_pcm_ops snd_es1938_capture_ops = {
1008 	.open =		snd_es1938_capture_open,
1009 	.close =	snd_es1938_capture_close,
1010 	.ioctl =	snd_pcm_lib_ioctl,
1011 	.hw_params =	snd_es1938_pcm_hw_params,
1012 	.hw_free =	snd_es1938_pcm_hw_free,
1013 	.prepare =	snd_es1938_capture_prepare,
1014 	.trigger =	snd_es1938_capture_trigger,
1015 	.pointer =	snd_es1938_capture_pointer,
1016 	.copy =		snd_es1938_capture_copy,
1017 };
1018 
1019 static int snd_es1938_new_pcm(struct es1938 *chip, int device)
1020 {
1021 	struct snd_pcm *pcm;
1022 	int err;
1023 
1024 	if ((err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm)) < 0)
1025 		return err;
1026 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1938_playback_ops);
1027 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1938_capture_ops);
1028 
1029 	pcm->private_data = chip;
1030 	pcm->info_flags = 0;
1031 	strcpy(pcm->name, "ESS Solo-1");
1032 
1033 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1034 					      snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1035 
1036 	chip->pcm = pcm;
1037 	return 0;
1038 }
1039 
1040 /* -------------------------------------------------------------------
1041  *
1042  *                       *** Mixer part ***
1043  */
1044 
1045 static int snd_es1938_info_mux(struct snd_kcontrol *kcontrol,
1046 			       struct snd_ctl_elem_info *uinfo)
1047 {
1048 	static const char * const texts[8] = {
1049 		"Mic", "Mic Master", "CD", "AOUT",
1050 		"Mic1", "Mix", "Line", "Master"
1051 	};
1052 
1053 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
1054 }
1055 
1056 static int snd_es1938_get_mux(struct snd_kcontrol *kcontrol,
1057 			      struct snd_ctl_elem_value *ucontrol)
1058 {
1059 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1060 	ucontrol->value.enumerated.item[0] = snd_es1938_mixer_read(chip, 0x1c) & 0x07;
1061 	return 0;
1062 }
1063 
1064 static int snd_es1938_put_mux(struct snd_kcontrol *kcontrol,
1065 			      struct snd_ctl_elem_value *ucontrol)
1066 {
1067 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1068 	unsigned char val = ucontrol->value.enumerated.item[0];
1069 
1070 	if (val > 7)
1071 		return -EINVAL;
1072 	return snd_es1938_mixer_bits(chip, 0x1c, 0x07, val) != val;
1073 }
1074 
1075 #define snd_es1938_info_spatializer_enable	snd_ctl_boolean_mono_info
1076 
1077 static int snd_es1938_get_spatializer_enable(struct snd_kcontrol *kcontrol,
1078 					     struct snd_ctl_elem_value *ucontrol)
1079 {
1080 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1081 	unsigned char val = snd_es1938_mixer_read(chip, 0x50);
1082 	ucontrol->value.integer.value[0] = !!(val & 8);
1083 	return 0;
1084 }
1085 
1086 static int snd_es1938_put_spatializer_enable(struct snd_kcontrol *kcontrol,
1087 					     struct snd_ctl_elem_value *ucontrol)
1088 {
1089 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1090 	unsigned char oval, nval;
1091 	int change;
1092 	nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
1093 	oval = snd_es1938_mixer_read(chip, 0x50) & 0x0c;
1094 	change = nval != oval;
1095 	if (change) {
1096 		snd_es1938_mixer_write(chip, 0x50, nval & ~0x04);
1097 		snd_es1938_mixer_write(chip, 0x50, nval);
1098 	}
1099 	return change;
1100 }
1101 
1102 static int snd_es1938_info_hw_volume(struct snd_kcontrol *kcontrol,
1103 				     struct snd_ctl_elem_info *uinfo)
1104 {
1105 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1106 	uinfo->count = 2;
1107 	uinfo->value.integer.min = 0;
1108 	uinfo->value.integer.max = 63;
1109 	return 0;
1110 }
1111 
1112 static int snd_es1938_get_hw_volume(struct snd_kcontrol *kcontrol,
1113 				    struct snd_ctl_elem_value *ucontrol)
1114 {
1115 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1116 	ucontrol->value.integer.value[0] = snd_es1938_mixer_read(chip, 0x61) & 0x3f;
1117 	ucontrol->value.integer.value[1] = snd_es1938_mixer_read(chip, 0x63) & 0x3f;
1118 	return 0;
1119 }
1120 
1121 #define snd_es1938_info_hw_switch		snd_ctl_boolean_stereo_info
1122 
1123 static int snd_es1938_get_hw_switch(struct snd_kcontrol *kcontrol,
1124 				    struct snd_ctl_elem_value *ucontrol)
1125 {
1126 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1127 	ucontrol->value.integer.value[0] = !(snd_es1938_mixer_read(chip, 0x61) & 0x40);
1128 	ucontrol->value.integer.value[1] = !(snd_es1938_mixer_read(chip, 0x63) & 0x40);
1129 	return 0;
1130 }
1131 
1132 static void snd_es1938_hwv_free(struct snd_kcontrol *kcontrol)
1133 {
1134 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1135 	chip->master_volume = NULL;
1136 	chip->master_switch = NULL;
1137 	chip->hw_volume = NULL;
1138 	chip->hw_switch = NULL;
1139 }
1140 
1141 static int snd_es1938_reg_bits(struct es1938 *chip, unsigned char reg,
1142 			       unsigned char mask, unsigned char val)
1143 {
1144 	if (reg < 0xa0)
1145 		return snd_es1938_mixer_bits(chip, reg, mask, val);
1146 	else
1147 		return snd_es1938_bits(chip, reg, mask, val);
1148 }
1149 
1150 static int snd_es1938_reg_read(struct es1938 *chip, unsigned char reg)
1151 {
1152 	if (reg < 0xa0)
1153 		return snd_es1938_mixer_read(chip, reg);
1154 	else
1155 		return snd_es1938_read(chip, reg);
1156 }
1157 
1158 #define ES1938_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv)    \
1159 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1160   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1161   .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   .tlv = { .p = xtlv } }
1166 #define ES1938_SINGLE(xname, xindex, reg, shift, mask, invert) \
1167 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1168   .info = snd_es1938_info_single, \
1169   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1170   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1171 
1172 static int snd_es1938_info_single(struct snd_kcontrol *kcontrol,
1173 				  struct snd_ctl_elem_info *uinfo)
1174 {
1175 	int mask = (kcontrol->private_value >> 16) & 0xff;
1176 
1177 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1178 	uinfo->count = 1;
1179 	uinfo->value.integer.min = 0;
1180 	uinfo->value.integer.max = mask;
1181 	return 0;
1182 }
1183 
1184 static int snd_es1938_get_single(struct snd_kcontrol *kcontrol,
1185 				 struct snd_ctl_elem_value *ucontrol)
1186 {
1187 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1188 	int reg = kcontrol->private_value & 0xff;
1189 	int shift = (kcontrol->private_value >> 8) & 0xff;
1190 	int mask = (kcontrol->private_value >> 16) & 0xff;
1191 	int invert = (kcontrol->private_value >> 24) & 0xff;
1192 	int val;
1193 
1194 	val = snd_es1938_reg_read(chip, reg);
1195 	ucontrol->value.integer.value[0] = (val >> shift) & mask;
1196 	if (invert)
1197 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1198 	return 0;
1199 }
1200 
1201 static int snd_es1938_put_single(struct snd_kcontrol *kcontrol,
1202 				 struct snd_ctl_elem_value *ucontrol)
1203 {
1204 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1205 	int reg = kcontrol->private_value & 0xff;
1206 	int shift = (kcontrol->private_value >> 8) & 0xff;
1207 	int mask = (kcontrol->private_value >> 16) & 0xff;
1208 	int invert = (kcontrol->private_value >> 24) & 0xff;
1209 	unsigned char val;
1210 
1211 	val = (ucontrol->value.integer.value[0] & mask);
1212 	if (invert)
1213 		val = mask - val;
1214 	mask <<= shift;
1215 	val <<= shift;
1216 	return snd_es1938_reg_bits(chip, reg, mask, val) != val;
1217 }
1218 
1219 #define ES1938_DOUBLE_TLV(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert, xtlv) \
1220 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1221   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1222   .name = xname, .index = xindex, \
1223   .info = snd_es1938_info_double, \
1224   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1225   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22), \
1226   .tlv = { .p = xtlv } }
1227 #define ES1938_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1228 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1229   .info = snd_es1938_info_double, \
1230   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1231   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1232 
1233 static int snd_es1938_info_double(struct snd_kcontrol *kcontrol,
1234 				  struct snd_ctl_elem_info *uinfo)
1235 {
1236 	int mask = (kcontrol->private_value >> 24) & 0xff;
1237 
1238 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1239 	uinfo->count = 2;
1240 	uinfo->value.integer.min = 0;
1241 	uinfo->value.integer.max = mask;
1242 	return 0;
1243 }
1244 
1245 static int snd_es1938_get_double(struct snd_kcontrol *kcontrol,
1246 				 struct snd_ctl_elem_value *ucontrol)
1247 {
1248 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1249 	int left_reg = kcontrol->private_value & 0xff;
1250 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1251 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1252 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1253 	int mask = (kcontrol->private_value >> 24) & 0xff;
1254 	int invert = (kcontrol->private_value >> 22) & 1;
1255 	unsigned char left, right;
1256 
1257 	left = snd_es1938_reg_read(chip, left_reg);
1258 	if (left_reg != right_reg)
1259 		right = snd_es1938_reg_read(chip, right_reg);
1260 	else
1261 		right = left;
1262 	ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1263 	ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1264 	if (invert) {
1265 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1266 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1267 	}
1268 	return 0;
1269 }
1270 
1271 static int snd_es1938_put_double(struct snd_kcontrol *kcontrol,
1272 				 struct snd_ctl_elem_value *ucontrol)
1273 {
1274 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1275 	int left_reg = kcontrol->private_value & 0xff;
1276 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1277 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1278 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1279 	int mask = (kcontrol->private_value >> 24) & 0xff;
1280 	int invert = (kcontrol->private_value >> 22) & 1;
1281 	int change;
1282 	unsigned char val1, val2, mask1, mask2;
1283 
1284 	val1 = ucontrol->value.integer.value[0] & mask;
1285 	val2 = ucontrol->value.integer.value[1] & mask;
1286 	if (invert) {
1287 		val1 = mask - val1;
1288 		val2 = mask - val2;
1289 	}
1290 	val1 <<= shift_left;
1291 	val2 <<= shift_right;
1292 	mask1 = mask << shift_left;
1293 	mask2 = mask << shift_right;
1294 	if (left_reg != right_reg) {
1295 		change = 0;
1296 		if (snd_es1938_reg_bits(chip, left_reg, mask1, val1) != val1)
1297 			change = 1;
1298 		if (snd_es1938_reg_bits(chip, right_reg, mask2, val2) != val2)
1299 			change = 1;
1300 	} else {
1301 		change = (snd_es1938_reg_bits(chip, left_reg, mask1 | mask2,
1302 					      val1 | val2) != (val1 | val2));
1303 	}
1304 	return change;
1305 }
1306 
1307 static const DECLARE_TLV_DB_RANGE(db_scale_master,
1308 	0, 54, TLV_DB_SCALE_ITEM(-3600, 50, 1),
1309 	54, 63, TLV_DB_SCALE_ITEM(-900, 100, 0),
1310 );
1311 
1312 static const DECLARE_TLV_DB_RANGE(db_scale_audio1,
1313 	0, 8, TLV_DB_SCALE_ITEM(-3300, 300, 1),
1314 	8, 15, TLV_DB_SCALE_ITEM(-900, 150, 0),
1315 );
1316 
1317 static const DECLARE_TLV_DB_RANGE(db_scale_audio2,
1318 	0, 8, TLV_DB_SCALE_ITEM(-3450, 300, 1),
1319 	8, 15, TLV_DB_SCALE_ITEM(-1050, 150, 0),
1320 );
1321 
1322 static const DECLARE_TLV_DB_RANGE(db_scale_mic,
1323 	0, 8, TLV_DB_SCALE_ITEM(-2400, 300, 1),
1324 	8, 15, TLV_DB_SCALE_ITEM(0, 150, 0),
1325 );
1326 
1327 static const DECLARE_TLV_DB_RANGE(db_scale_line,
1328 	0, 8, TLV_DB_SCALE_ITEM(-3150, 300, 1),
1329 	8, 15, TLV_DB_SCALE_ITEM(-750, 150, 0),
1330 );
1331 
1332 static const DECLARE_TLV_DB_SCALE(db_scale_capture, 0, 150, 0);
1333 
1334 static struct snd_kcontrol_new snd_es1938_controls[] = {
1335 ES1938_DOUBLE_TLV("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0,
1336 		  db_scale_master),
1337 ES1938_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1338 {
1339 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1340 	.name = "Hardware Master Playback Volume",
1341 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1342 	.info = snd_es1938_info_hw_volume,
1343 	.get = snd_es1938_get_hw_volume,
1344 },
1345 {
1346 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1347 	.access = (SNDRV_CTL_ELEM_ACCESS_READ |
1348 		   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1349 	.name = "Hardware Master Playback Switch",
1350 	.info = snd_es1938_info_hw_switch,
1351 	.get = snd_es1938_get_hw_switch,
1352 	.tlv = { .p = db_scale_master },
1353 },
1354 ES1938_SINGLE("Hardware Volume Split", 0, 0x64, 7, 1, 0),
1355 ES1938_DOUBLE_TLV("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0,
1356 		  db_scale_line),
1357 ES1938_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1358 ES1938_DOUBLE_TLV("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0,
1359 		  db_scale_mic),
1360 ES1938_DOUBLE_TLV("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1361 		  db_scale_line),
1362 ES1938_DOUBLE_TLV("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0,
1363 		  db_scale_mic),
1364 ES1938_DOUBLE_TLV("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0,
1365 		  db_scale_line),
1366 ES1938_DOUBLE_TLV("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0,
1367 		  db_scale_capture),
1368 ES1938_SINGLE("Beep Volume", 0, 0x3c, 0, 7, 0),
1369 ES1938_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1370 ES1938_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1371 {
1372 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1373 	.name = "Capture Source",
1374 	.info = snd_es1938_info_mux,
1375 	.get = snd_es1938_get_mux,
1376 	.put = snd_es1938_put_mux,
1377 },
1378 ES1938_DOUBLE_TLV("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1379 		  db_scale_line),
1380 ES1938_DOUBLE_TLV("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0,
1381 		  db_scale_audio2),
1382 ES1938_DOUBLE_TLV("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0,
1383 		  db_scale_mic),
1384 ES1938_DOUBLE_TLV("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0,
1385 		  db_scale_line),
1386 ES1938_DOUBLE_TLV("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0,
1387 		  db_scale_mic),
1388 ES1938_DOUBLE_TLV("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0,
1389 		  db_scale_line),
1390 ES1938_DOUBLE_TLV("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0,
1391 		  db_scale_line),
1392 ES1938_DOUBLE_TLV("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0,
1393 		  db_scale_line),
1394 ES1938_DOUBLE_TLV("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0,
1395 		  db_scale_audio2),
1396 ES1938_DOUBLE_TLV("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0,
1397 		  db_scale_audio1),
1398 ES1938_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1399 {
1400 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1401 	.name = "3D Control - Switch",
1402 	.info = snd_es1938_info_spatializer_enable,
1403 	.get = snd_es1938_get_spatializer_enable,
1404 	.put = snd_es1938_put_spatializer_enable,
1405 },
1406 ES1938_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0)
1407 };
1408 
1409 
1410 /* ---------------------------------------------------------------------------- */
1411 /* ---------------------------------------------------------------------------- */
1412 
1413 /*
1414  * initialize the chip - used by resume callback, too
1415  */
1416 static void snd_es1938_chip_init(struct es1938 *chip)
1417 {
1418 	/* reset chip */
1419 	snd_es1938_reset(chip);
1420 
1421 	/* configure native mode */
1422 
1423 	/* enable bus master */
1424 	pci_set_master(chip->pci);
1425 
1426 	/* disable legacy audio */
1427 	pci_write_config_word(chip->pci, SL_PCI_LEGACYCONTROL, 0x805f);
1428 
1429 	/* set DDMA base */
1430 	pci_write_config_word(chip->pci, SL_PCI_DDMACONTROL, chip->ddma_port | 1);
1431 
1432 	/* set DMA/IRQ policy */
1433 	pci_write_config_dword(chip->pci, SL_PCI_CONFIG, 0);
1434 
1435 	/* enable Audio 1, Audio 2, MPU401 IRQ and HW volume IRQ*/
1436 	outb(0xf0, SLIO_REG(chip, IRQCONTROL));
1437 
1438 	/* reset DMA */
1439 	outb(0, SLDM_REG(chip, DMACLEAR));
1440 }
1441 
1442 #ifdef CONFIG_PM_SLEEP
1443 /*
1444  * PM support
1445  */
1446 
1447 static unsigned char saved_regs[SAVED_REG_SIZE+1] = {
1448 	0x14, 0x1a, 0x1c, 0x3a, 0x3c, 0x3e, 0x36, 0x38,
1449 	0x50, 0x52, 0x60, 0x61, 0x62, 0x63, 0x64, 0x68,
1450 	0x69, 0x6a, 0x6b, 0x6d, 0x6e, 0x6f, 0x7c, 0x7d,
1451 	0xa8, 0xb4,
1452 };
1453 
1454 
1455 static int es1938_suspend(struct device *dev)
1456 {
1457 	struct pci_dev *pci = to_pci_dev(dev);
1458 	struct snd_card *card = dev_get_drvdata(dev);
1459 	struct es1938 *chip = card->private_data;
1460 	unsigned char *s, *d;
1461 
1462 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1463 	snd_pcm_suspend_all(chip->pcm);
1464 
1465 	/* save mixer-related registers */
1466 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++)
1467 		*d = snd_es1938_reg_read(chip, *s);
1468 
1469 	outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
1470 	if (chip->irq >= 0) {
1471 		free_irq(chip->irq, chip);
1472 		chip->irq = -1;
1473 	}
1474 	pci_disable_device(pci);
1475 	pci_save_state(pci);
1476 	pci_set_power_state(pci, PCI_D3hot);
1477 	return 0;
1478 }
1479 
1480 static int es1938_resume(struct device *dev)
1481 {
1482 	struct pci_dev *pci = to_pci_dev(dev);
1483 	struct snd_card *card = dev_get_drvdata(dev);
1484 	struct es1938 *chip = card->private_data;
1485 	unsigned char *s, *d;
1486 
1487 	pci_set_power_state(pci, PCI_D0);
1488 	pci_restore_state(pci);
1489 	if (pci_enable_device(pci) < 0) {
1490 		dev_err(dev, "pci_enable_device failed, disabling device\n");
1491 		snd_card_disconnect(card);
1492 		return -EIO;
1493 	}
1494 
1495 	if (request_irq(pci->irq, snd_es1938_interrupt,
1496 			IRQF_SHARED, KBUILD_MODNAME, chip)) {
1497 		dev_err(dev, "unable to grab IRQ %d, disabling device\n",
1498 			pci->irq);
1499 		snd_card_disconnect(card);
1500 		return -EIO;
1501 	}
1502 	chip->irq = pci->irq;
1503 	snd_es1938_chip_init(chip);
1504 
1505 	/* restore mixer-related registers */
1506 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++) {
1507 		if (*s < 0xa0)
1508 			snd_es1938_mixer_write(chip, *s, *d);
1509 		else
1510 			snd_es1938_write(chip, *s, *d);
1511 	}
1512 
1513 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1514 	return 0;
1515 }
1516 
1517 static SIMPLE_DEV_PM_OPS(es1938_pm, es1938_suspend, es1938_resume);
1518 #define ES1938_PM_OPS	&es1938_pm
1519 #else
1520 #define ES1938_PM_OPS	NULL
1521 #endif /* CONFIG_PM_SLEEP */
1522 
1523 #ifdef SUPPORT_JOYSTICK
1524 static int snd_es1938_create_gameport(struct es1938 *chip)
1525 {
1526 	struct gameport *gp;
1527 
1528 	chip->gameport = gp = gameport_allocate_port();
1529 	if (!gp) {
1530 		dev_err(chip->card->dev,
1531 			"cannot allocate memory for gameport\n");
1532 		return -ENOMEM;
1533 	}
1534 
1535 	gameport_set_name(gp, "ES1938");
1536 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1537 	gameport_set_dev_parent(gp, &chip->pci->dev);
1538 	gp->io = chip->game_port;
1539 
1540 	gameport_register_port(gp);
1541 
1542 	return 0;
1543 }
1544 
1545 static void snd_es1938_free_gameport(struct es1938 *chip)
1546 {
1547 	if (chip->gameport) {
1548 		gameport_unregister_port(chip->gameport);
1549 		chip->gameport = NULL;
1550 	}
1551 }
1552 #else
1553 static inline int snd_es1938_create_gameport(struct es1938 *chip) { return -ENOSYS; }
1554 static inline void snd_es1938_free_gameport(struct es1938 *chip) { }
1555 #endif /* SUPPORT_JOYSTICK */
1556 
1557 static int snd_es1938_free(struct es1938 *chip)
1558 {
1559 	/* disable irqs */
1560 	outb(0x00, SLIO_REG(chip, IRQCONTROL));
1561 	if (chip->rmidi)
1562 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
1563 
1564 	snd_es1938_free_gameport(chip);
1565 
1566 	if (chip->irq >= 0)
1567 		free_irq(chip->irq, chip);
1568 	pci_release_regions(chip->pci);
1569 	pci_disable_device(chip->pci);
1570 	kfree(chip);
1571 	return 0;
1572 }
1573 
1574 static int snd_es1938_dev_free(struct snd_device *device)
1575 {
1576 	struct es1938 *chip = device->device_data;
1577 	return snd_es1938_free(chip);
1578 }
1579 
1580 static int snd_es1938_create(struct snd_card *card,
1581 			     struct pci_dev *pci,
1582 			     struct es1938 **rchip)
1583 {
1584 	struct es1938 *chip;
1585 	int err;
1586 	static struct snd_device_ops ops = {
1587 		.dev_free =	snd_es1938_dev_free,
1588 	};
1589 
1590 	*rchip = NULL;
1591 
1592 	/* enable PCI device */
1593 	if ((err = pci_enable_device(pci)) < 0)
1594 		return err;
1595         /* check, if we can restrict PCI DMA transfers to 24 bits */
1596 	if (pci_set_dma_mask(pci, DMA_BIT_MASK(24)) < 0 ||
1597 	    pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(24)) < 0) {
1598 		dev_err(card->dev,
1599 			"architecture does not support 24bit PCI busmaster DMA\n");
1600 		pci_disable_device(pci);
1601                 return -ENXIO;
1602         }
1603 
1604 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1605 	if (chip == NULL) {
1606 		pci_disable_device(pci);
1607 		return -ENOMEM;
1608 	}
1609 	spin_lock_init(&chip->reg_lock);
1610 	spin_lock_init(&chip->mixer_lock);
1611 	chip->card = card;
1612 	chip->pci = pci;
1613 	chip->irq = -1;
1614 	if ((err = pci_request_regions(pci, "ESS Solo-1")) < 0) {
1615 		kfree(chip);
1616 		pci_disable_device(pci);
1617 		return err;
1618 	}
1619 	chip->io_port = pci_resource_start(pci, 0);
1620 	chip->sb_port = pci_resource_start(pci, 1);
1621 	chip->vc_port = pci_resource_start(pci, 2);
1622 	chip->mpu_port = pci_resource_start(pci, 3);
1623 	chip->game_port = pci_resource_start(pci, 4);
1624 	if (request_irq(pci->irq, snd_es1938_interrupt, IRQF_SHARED,
1625 			KBUILD_MODNAME, chip)) {
1626 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1627 		snd_es1938_free(chip);
1628 		return -EBUSY;
1629 	}
1630 	chip->irq = pci->irq;
1631 	dev_dbg(card->dev,
1632 		"create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
1633 		   chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);
1634 
1635 	chip->ddma_port = chip->vc_port + 0x00;		/* fix from Thomas Sailer */
1636 
1637 	snd_es1938_chip_init(chip);
1638 
1639 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1640 		snd_es1938_free(chip);
1641 		return err;
1642 	}
1643 
1644 	*rchip = chip;
1645 	return 0;
1646 }
1647 
1648 /* --------------------------------------------------------------------
1649  * Interrupt handler
1650  * -------------------------------------------------------------------- */
1651 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id)
1652 {
1653 	struct es1938 *chip = dev_id;
1654 	unsigned char status, audiostatus;
1655 	int handled = 0;
1656 
1657 	status = inb(SLIO_REG(chip, IRQCONTROL));
1658 #if 0
1659 	dev_dbg(chip->card->dev,
1660 		"Es1938debug - interrupt status: =0x%x\n", status);
1661 #endif
1662 
1663 	/* AUDIO 1 */
1664 	if (status & 0x10) {
1665 #if 0
1666 		dev_dbg(chip->card->dev,
1667 		       "Es1938debug - AUDIO channel 1 interrupt\n");
1668 		dev_dbg(chip->card->dev,
1669 		       "Es1938debug - AUDIO channel 1 DMAC DMA count: %u\n",
1670 		       inw(SLDM_REG(chip, DMACOUNT)));
1671 		dev_dbg(chip->card->dev,
1672 		       "Es1938debug - AUDIO channel 1 DMAC DMA base: %u\n",
1673 		       inl(SLDM_REG(chip, DMAADDR)));
1674 		dev_dbg(chip->card->dev,
1675 		       "Es1938debug - AUDIO channel 1 DMAC DMA status: 0x%x\n",
1676 		       inl(SLDM_REG(chip, DMASTATUS)));
1677 #endif
1678 		/* clear irq */
1679 		handled = 1;
1680 		audiostatus = inb(SLSB_REG(chip, STATUS));
1681 		if (chip->active & ADC1)
1682 			snd_pcm_period_elapsed(chip->capture_substream);
1683 		else if (chip->active & DAC1)
1684 			snd_pcm_period_elapsed(chip->playback2_substream);
1685 	}
1686 
1687 	/* AUDIO 2 */
1688 	if (status & 0x20) {
1689 #if 0
1690 		dev_dbg(chip->card->dev,
1691 		       "Es1938debug - AUDIO channel 2 interrupt\n");
1692 		dev_dbg(chip->card->dev,
1693 		       "Es1938debug - AUDIO channel 2 DMAC DMA count: %u\n",
1694 		       inw(SLIO_REG(chip, AUDIO2DMACOUNT)));
1695 		dev_dbg(chip->card->dev,
1696 		       "Es1938debug - AUDIO channel 2 DMAC DMA base: %u\n",
1697 		       inl(SLIO_REG(chip, AUDIO2DMAADDR)));
1698 
1699 #endif
1700 		/* clear irq */
1701 		handled = 1;
1702 		snd_es1938_mixer_bits(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x80, 0);
1703 		if (chip->active & DAC2)
1704 			snd_pcm_period_elapsed(chip->playback1_substream);
1705 	}
1706 
1707 	/* Hardware volume */
1708 	if (status & 0x40) {
1709 		int split = snd_es1938_mixer_read(chip, 0x64) & 0x80;
1710 		handled = 1;
1711 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
1712 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
1713 		if (!split) {
1714 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1715 				       &chip->master_switch->id);
1716 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1717 				       &chip->master_volume->id);
1718 		}
1719 		/* ack interrupt */
1720 		snd_es1938_mixer_write(chip, 0x66, 0x00);
1721 	}
1722 
1723 	/* MPU401 */
1724 	if (status & 0x80) {
1725 		// the following line is evil! It switches off MIDI interrupt handling after the first interrupt received.
1726 		// replacing the last 0 by 0x40 works for ESS-Solo1, but just doing nothing works as well!
1727 		// andreas@flying-snail.de
1728 		// snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0); /* ack? */
1729 		if (chip->rmidi) {
1730 			handled = 1;
1731 			snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1732 		}
1733 	}
1734 	return IRQ_RETVAL(handled);
1735 }
1736 
1737 #define ES1938_DMA_SIZE 64
1738 
1739 static int snd_es1938_mixer(struct es1938 *chip)
1740 {
1741 	struct snd_card *card;
1742 	unsigned int idx;
1743 	int err;
1744 
1745 	card = chip->card;
1746 
1747 	strcpy(card->mixername, "ESS Solo-1");
1748 
1749 	for (idx = 0; idx < ARRAY_SIZE(snd_es1938_controls); idx++) {
1750 		struct snd_kcontrol *kctl;
1751 		kctl = snd_ctl_new1(&snd_es1938_controls[idx], chip);
1752 		switch (idx) {
1753 			case 0:
1754 				chip->master_volume = kctl;
1755 				kctl->private_free = snd_es1938_hwv_free;
1756 				break;
1757 			case 1:
1758 				chip->master_switch = kctl;
1759 				kctl->private_free = snd_es1938_hwv_free;
1760 				break;
1761 			case 2:
1762 				chip->hw_volume = kctl;
1763 				kctl->private_free = snd_es1938_hwv_free;
1764 				break;
1765 			case 3:
1766 				chip->hw_switch = kctl;
1767 				kctl->private_free = snd_es1938_hwv_free;
1768 				break;
1769 			}
1770 		if ((err = snd_ctl_add(card, kctl)) < 0)
1771 			return err;
1772 	}
1773 	return 0;
1774 }
1775 
1776 
1777 static int snd_es1938_probe(struct pci_dev *pci,
1778 			    const struct pci_device_id *pci_id)
1779 {
1780 	static int dev;
1781 	struct snd_card *card;
1782 	struct es1938 *chip;
1783 	struct snd_opl3 *opl3;
1784 	int idx, err;
1785 
1786 	if (dev >= SNDRV_CARDS)
1787 		return -ENODEV;
1788 	if (!enable[dev]) {
1789 		dev++;
1790 		return -ENOENT;
1791 	}
1792 
1793 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1794 			   0, &card);
1795 	if (err < 0)
1796 		return err;
1797 	for (idx = 0; idx < 5; idx++) {
1798 		if (pci_resource_start(pci, idx) == 0 ||
1799 		    !(pci_resource_flags(pci, idx) & IORESOURCE_IO)) {
1800 		    	snd_card_free(card);
1801 		    	return -ENODEV;
1802 		}
1803 	}
1804 	if ((err = snd_es1938_create(card, pci, &chip)) < 0) {
1805 		snd_card_free(card);
1806 		return err;
1807 	}
1808 	card->private_data = chip;
1809 
1810 	strcpy(card->driver, "ES1938");
1811 	strcpy(card->shortname, "ESS ES1938 (Solo-1)");
1812 	sprintf(card->longname, "%s rev %i, irq %i",
1813 		card->shortname,
1814 		chip->revision,
1815 		chip->irq);
1816 
1817 	if ((err = snd_es1938_new_pcm(chip, 0)) < 0) {
1818 		snd_card_free(card);
1819 		return err;
1820 	}
1821 	if ((err = snd_es1938_mixer(chip)) < 0) {
1822 		snd_card_free(card);
1823 		return err;
1824 	}
1825 	if (snd_opl3_create(card,
1826 			    SLSB_REG(chip, FMLOWADDR),
1827 			    SLSB_REG(chip, FMHIGHADDR),
1828 			    OPL3_HW_OPL3, 1, &opl3) < 0) {
1829 		dev_err(card->dev, "OPL3 not detected at 0x%lx\n",
1830 			   SLSB_REG(chip, FMLOWADDR));
1831 	} else {
1832 	        if ((err = snd_opl3_timer_new(opl3, 0, 1)) < 0) {
1833 	                snd_card_free(card);
1834 	                return err;
1835 		}
1836 	        if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1837 	                snd_card_free(card);
1838 	                return err;
1839 		}
1840 	}
1841 	if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
1842 				chip->mpu_port,
1843 				MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
1844 				-1, &chip->rmidi) < 0) {
1845 		dev_err(card->dev, "unable to initialize MPU-401\n");
1846 	} else {
1847 		// this line is vital for MIDI interrupt handling on ess-solo1
1848 		// andreas@flying-snail.de
1849 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0x40);
1850 	}
1851 
1852 	snd_es1938_create_gameport(chip);
1853 
1854 	if ((err = snd_card_register(card)) < 0) {
1855 		snd_card_free(card);
1856 		return err;
1857 	}
1858 
1859 	pci_set_drvdata(pci, card);
1860 	dev++;
1861 	return 0;
1862 }
1863 
1864 static void snd_es1938_remove(struct pci_dev *pci)
1865 {
1866 	snd_card_free(pci_get_drvdata(pci));
1867 }
1868 
1869 static struct pci_driver es1938_driver = {
1870 	.name = KBUILD_MODNAME,
1871 	.id_table = snd_es1938_ids,
1872 	.probe = snd_es1938_probe,
1873 	.remove = snd_es1938_remove,
1874 	.driver = {
1875 		.pm = ES1938_PM_OPS,
1876 	},
1877 };
1878 
1879 module_pci_driver(es1938_driver);
1880