xref: /linux/sound/pci/es1938.c (revision 151ebcf0797b1a3ba53c8843dc21748c80e098c7)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Driver for ESS Solo-1 (ES1938, ES1946, ES1969) soundcard
4  *  Copyright (c) by Jaromir Koutek <miri@punknet.cz>,
5  *                   Jaroslav Kysela <perex@perex.cz>,
6  *                   Thomas Sailer <sailer@ife.ee.ethz.ch>,
7  *                   Abramo Bagnara <abramo@alsa-project.org>,
8  *                   Markus Gruber <gruber@eikon.tum.de>
9  *
10  * Rewritten from sonicvibes.c source.
11  *
12  *  TODO:
13  *    Rewrite better spinlocks
14  */
15 
16 /*
17   NOTES:
18   - Capture data is written unaligned starting from dma_base + 1 so I need to
19     disable mmap and to add a copy callback.
20   - After several cycle of the following:
21     while : ; do arecord -d1 -f cd -t raw | aplay -f cd ; done
22     a "playback write error (DMA or IRQ trouble?)" may happen.
23     This is due to playback interrupts not generated.
24     I suspect a timing issue.
25   - Sometimes the interrupt handler is invoked wrongly during playback.
26     This generates some harmless "Unexpected hw_pointer: wrong interrupt
27     acknowledge".
28     I've seen that using small period sizes.
29     Reproducible with:
30     mpg123 test.mp3 &
31     hdparm -t -T /dev/hda
32 */
33 
34 
35 #include <linux/init.h>
36 #include <linux/interrupt.h>
37 #include <linux/pci.h>
38 #include <linux/slab.h>
39 #include <linux/gameport.h>
40 #include <linux/module.h>
41 #include <linux/delay.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/io.h>
44 #include <sound/core.h>
45 #include <sound/control.h>
46 #include <sound/pcm.h>
47 #include <sound/opl3.h>
48 #include <sound/mpu401.h>
49 #include <sound/initval.h>
50 #include <sound/tlv.h>
51 
52 MODULE_AUTHOR("Jaromir Koutek <miri@punknet.cz>");
53 MODULE_DESCRIPTION("ESS Solo-1");
54 MODULE_LICENSE("GPL");
55 
56 #if IS_REACHABLE(CONFIG_GAMEPORT)
57 #define SUPPORT_JOYSTICK 1
58 #endif
59 
60 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
61 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
62 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
63 
64 module_param_array(index, int, NULL, 0444);
65 MODULE_PARM_DESC(index, "Index value for ESS Solo-1 soundcard.");
66 module_param_array(id, charp, NULL, 0444);
67 MODULE_PARM_DESC(id, "ID string for ESS Solo-1 soundcard.");
68 module_param_array(enable, bool, NULL, 0444);
69 MODULE_PARM_DESC(enable, "Enable ESS Solo-1 soundcard.");
70 
71 #define SLIO_REG(chip, x) ((chip)->io_port + ESSIO_REG_##x)
72 
73 #define SLDM_REG(chip, x) ((chip)->ddma_port + ESSDM_REG_##x)
74 
75 #define SLSB_REG(chip, x) ((chip)->sb_port + ESSSB_REG_##x)
76 
77 #define SL_PCI_LEGACYCONTROL		0x40
78 #define SL_PCI_CONFIG			0x50
79 #define SL_PCI_DDMACONTROL		0x60
80 
81 #define ESSIO_REG_AUDIO2DMAADDR		0
82 #define ESSIO_REG_AUDIO2DMACOUNT	4
83 #define ESSIO_REG_AUDIO2MODE		6
84 #define ESSIO_REG_IRQCONTROL		7
85 
86 #define ESSDM_REG_DMAADDR		0x00
87 #define ESSDM_REG_DMACOUNT		0x04
88 #define ESSDM_REG_DMACOMMAND		0x08
89 #define ESSDM_REG_DMASTATUS		0x08
90 #define ESSDM_REG_DMAMODE		0x0b
91 #define ESSDM_REG_DMACLEAR		0x0d
92 #define ESSDM_REG_DMAMASK		0x0f
93 
94 #define ESSSB_REG_FMLOWADDR		0x00
95 #define ESSSB_REG_FMHIGHADDR		0x02
96 #define ESSSB_REG_MIXERADDR		0x04
97 #define ESSSB_REG_MIXERDATA		0x05
98 
99 #define ESSSB_IREG_AUDIO1		0x14
100 #define ESSSB_IREG_MICMIX		0x1a
101 #define ESSSB_IREG_RECSRC		0x1c
102 #define ESSSB_IREG_MASTER		0x32
103 #define ESSSB_IREG_FM			0x36
104 #define ESSSB_IREG_AUXACD		0x38
105 #define ESSSB_IREG_AUXB			0x3a
106 #define ESSSB_IREG_PCSPEAKER		0x3c
107 #define ESSSB_IREG_LINE			0x3e
108 #define ESSSB_IREG_SPATCONTROL		0x50
109 #define ESSSB_IREG_SPATLEVEL		0x52
110 #define ESSSB_IREG_MASTER_LEFT		0x60
111 #define ESSSB_IREG_MASTER_RIGHT		0x62
112 #define ESSSB_IREG_MPU401CONTROL	0x64
113 #define ESSSB_IREG_MICMIXRECORD		0x68
114 #define ESSSB_IREG_AUDIO2RECORD		0x69
115 #define ESSSB_IREG_AUXACDRECORD		0x6a
116 #define ESSSB_IREG_FMRECORD		0x6b
117 #define ESSSB_IREG_AUXBRECORD		0x6c
118 #define ESSSB_IREG_MONO			0x6d
119 #define ESSSB_IREG_LINERECORD		0x6e
120 #define ESSSB_IREG_MONORECORD		0x6f
121 #define ESSSB_IREG_AUDIO2SAMPLE		0x70
122 #define ESSSB_IREG_AUDIO2MODE		0x71
123 #define ESSSB_IREG_AUDIO2FILTER		0x72
124 #define ESSSB_IREG_AUDIO2TCOUNTL	0x74
125 #define ESSSB_IREG_AUDIO2TCOUNTH	0x76
126 #define ESSSB_IREG_AUDIO2CONTROL1	0x78
127 #define ESSSB_IREG_AUDIO2CONTROL2	0x7a
128 #define ESSSB_IREG_AUDIO2		0x7c
129 
130 #define ESSSB_REG_RESET			0x06
131 
132 #define ESSSB_REG_READDATA		0x0a
133 #define ESSSB_REG_WRITEDATA		0x0c
134 #define ESSSB_REG_READSTATUS		0x0c
135 
136 #define ESSSB_REG_STATUS		0x0e
137 
138 #define ESS_CMD_EXTSAMPLERATE		0xa1
139 #define ESS_CMD_FILTERDIV		0xa2
140 #define ESS_CMD_DMACNTRELOADL		0xa4
141 #define ESS_CMD_DMACNTRELOADH		0xa5
142 #define ESS_CMD_ANALOGCONTROL		0xa8
143 #define ESS_CMD_IRQCONTROL		0xb1
144 #define ESS_CMD_DRQCONTROL		0xb2
145 #define ESS_CMD_RECLEVEL		0xb4
146 #define ESS_CMD_SETFORMAT		0xb6
147 #define ESS_CMD_SETFORMAT2		0xb7
148 #define ESS_CMD_DMACONTROL		0xb8
149 #define ESS_CMD_DMATYPE			0xb9
150 #define ESS_CMD_OFFSETLEFT		0xba
151 #define ESS_CMD_OFFSETRIGHT		0xbb
152 #define ESS_CMD_READREG			0xc0
153 #define ESS_CMD_ENABLEEXT		0xc6
154 #define ESS_CMD_PAUSEDMA		0xd0
155 #define ESS_CMD_ENABLEAUDIO1		0xd1
156 #define ESS_CMD_STOPAUDIO1		0xd3
157 #define ESS_CMD_AUDIO1STATUS		0xd8
158 #define ESS_CMD_CONTDMA			0xd4
159 #define ESS_CMD_TESTIRQ			0xf2
160 
161 #define ESS_RECSRC_MIC		0
162 #define ESS_RECSRC_AUXACD	2
163 #define ESS_RECSRC_AUXB		5
164 #define ESS_RECSRC_LINE		6
165 #define ESS_RECSRC_NONE		7
166 
167 #define DAC1 0x01
168 #define ADC1 0x02
169 #define DAC2 0x04
170 
171 /*
172 
173  */
174 
175 #define SAVED_REG_SIZE	32 /* max. number of registers to save */
176 
177 struct es1938 {
178 	int irq;
179 
180 	unsigned long io_port;
181 	unsigned long sb_port;
182 	unsigned long vc_port;
183 	unsigned long mpu_port;
184 	unsigned long game_port;
185 	unsigned long ddma_port;
186 
187 	unsigned char irqmask;
188 	unsigned char revision;
189 
190 	struct snd_kcontrol *hw_volume;
191 	struct snd_kcontrol *hw_switch;
192 	struct snd_kcontrol *master_volume;
193 	struct snd_kcontrol *master_switch;
194 
195 	struct pci_dev *pci;
196 	struct snd_card *card;
197 	struct snd_pcm *pcm;
198 	struct snd_pcm_substream *capture_substream;
199 	struct snd_pcm_substream *playback1_substream;
200 	struct snd_pcm_substream *playback2_substream;
201 	struct snd_rawmidi *rmidi;
202 
203 	unsigned int dma1_size;
204 	unsigned int dma2_size;
205 	unsigned int dma1_start;
206 	unsigned int dma2_start;
207 	unsigned int dma1_shift;
208 	unsigned int dma2_shift;
209 	unsigned int last_capture_dmaaddr;
210 	unsigned int active;
211 
212 	spinlock_t reg_lock;
213 	spinlock_t mixer_lock;
214         struct snd_info_entry *proc_entry;
215 
216 #ifdef SUPPORT_JOYSTICK
217 	struct gameport *gameport;
218 #endif
219 	unsigned char saved_regs[SAVED_REG_SIZE];
220 };
221 
222 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id);
223 
224 static const struct pci_device_id snd_es1938_ids[] = {
225 	{ PCI_VDEVICE(ESS, 0x1969), 0, },   /* Solo-1 */
226 	{ 0, }
227 };
228 
229 MODULE_DEVICE_TABLE(pci, snd_es1938_ids);
230 
231 #define RESET_LOOP_TIMEOUT	0x10000
232 #define WRITE_LOOP_TIMEOUT	0x10000
233 #define GET_LOOP_TIMEOUT	0x01000
234 
235 /* -----------------------------------------------------------------
236  * Write to a mixer register
237  * -----------------------------------------------------------------*/
238 static void snd_es1938_mixer_write(struct es1938 *chip, unsigned char reg, unsigned char val)
239 {
240 	unsigned long flags;
241 	spin_lock_irqsave(&chip->mixer_lock, flags);
242 	outb(reg, SLSB_REG(chip, MIXERADDR));
243 	outb(val, SLSB_REG(chip, MIXERDATA));
244 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
245 	dev_dbg(chip->card->dev, "Mixer reg %02x set to %02x\n", reg, val);
246 }
247 
248 /* -----------------------------------------------------------------
249  * Read from a mixer register
250  * -----------------------------------------------------------------*/
251 static int snd_es1938_mixer_read(struct es1938 *chip, unsigned char reg)
252 {
253 	int data;
254 	unsigned long flags;
255 	spin_lock_irqsave(&chip->mixer_lock, flags);
256 	outb(reg, SLSB_REG(chip, MIXERADDR));
257 	data = inb(SLSB_REG(chip, MIXERDATA));
258 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
259 	dev_dbg(chip->card->dev, "Mixer reg %02x now is %02x\n", reg, data);
260 	return data;
261 }
262 
263 /* -----------------------------------------------------------------
264  * Write to some bits of a mixer register (return old value)
265  * -----------------------------------------------------------------*/
266 static int snd_es1938_mixer_bits(struct es1938 *chip, unsigned char reg,
267 				 unsigned char mask, unsigned char val)
268 {
269 	unsigned long flags;
270 	unsigned char old, new, oval;
271 	spin_lock_irqsave(&chip->mixer_lock, flags);
272 	outb(reg, SLSB_REG(chip, MIXERADDR));
273 	old = inb(SLSB_REG(chip, MIXERDATA));
274 	oval = old & mask;
275 	if (val != oval) {
276 		new = (old & ~mask) | (val & mask);
277 		outb(new, SLSB_REG(chip, MIXERDATA));
278 		dev_dbg(chip->card->dev,
279 			"Mixer reg %02x was %02x, set to %02x\n",
280 			   reg, old, new);
281 	}
282 	spin_unlock_irqrestore(&chip->mixer_lock, flags);
283 	return oval;
284 }
285 
286 /* -----------------------------------------------------------------
287  * Write command to Controller Registers
288  * -----------------------------------------------------------------*/
289 static void snd_es1938_write_cmd(struct es1938 *chip, unsigned char cmd)
290 {
291 	int i;
292 	unsigned char v;
293 	for (i = 0; i < WRITE_LOOP_TIMEOUT; i++) {
294 		v = inb(SLSB_REG(chip, READSTATUS));
295 		if (!(v & 0x80)) {
296 			outb(cmd, SLSB_REG(chip, WRITEDATA));
297 			return;
298 		}
299 	}
300 	dev_err(chip->card->dev,
301 		"snd_es1938_write_cmd timeout (0x02%x/0x02%x)\n", cmd, v);
302 }
303 
304 /* -----------------------------------------------------------------
305  * Read the Read Data Buffer
306  * -----------------------------------------------------------------*/
307 static int snd_es1938_get_byte(struct es1938 *chip)
308 {
309 	int i;
310 	unsigned char v;
311 	for (i = GET_LOOP_TIMEOUT; i; i--) {
312 		v = inb(SLSB_REG(chip, STATUS));
313 		if (v & 0x80)
314 			return inb(SLSB_REG(chip, READDATA));
315 	}
316 	dev_err(chip->card->dev, "get_byte timeout: status 0x02%x\n", v);
317 	return -ENODEV;
318 }
319 
320 /* -----------------------------------------------------------------
321  * Write value cmd register
322  * -----------------------------------------------------------------*/
323 static void snd_es1938_write(struct es1938 *chip, unsigned char reg, unsigned char val)
324 {
325 	unsigned long flags;
326 	spin_lock_irqsave(&chip->reg_lock, flags);
327 	snd_es1938_write_cmd(chip, reg);
328 	snd_es1938_write_cmd(chip, val);
329 	spin_unlock_irqrestore(&chip->reg_lock, flags);
330 	dev_dbg(chip->card->dev, "Reg %02x set to %02x\n", reg, val);
331 }
332 
333 /* -----------------------------------------------------------------
334  * Read data from cmd register and return it
335  * -----------------------------------------------------------------*/
336 static unsigned char snd_es1938_read(struct es1938 *chip, unsigned char reg)
337 {
338 	unsigned char val;
339 	unsigned long flags;
340 	spin_lock_irqsave(&chip->reg_lock, flags);
341 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
342 	snd_es1938_write_cmd(chip, reg);
343 	val = snd_es1938_get_byte(chip);
344 	spin_unlock_irqrestore(&chip->reg_lock, flags);
345 	dev_dbg(chip->card->dev, "Reg %02x now is %02x\n", reg, val);
346 	return val;
347 }
348 
349 /* -----------------------------------------------------------------
350  * Write data to cmd register and return old value
351  * -----------------------------------------------------------------*/
352 static int snd_es1938_bits(struct es1938 *chip, unsigned char reg, unsigned char mask,
353 			   unsigned char val)
354 {
355 	unsigned long flags;
356 	unsigned char old, new, oval;
357 	spin_lock_irqsave(&chip->reg_lock, flags);
358 	snd_es1938_write_cmd(chip, ESS_CMD_READREG);
359 	snd_es1938_write_cmd(chip, reg);
360 	old = snd_es1938_get_byte(chip);
361 	oval = old & mask;
362 	if (val != oval) {
363 		snd_es1938_write_cmd(chip, reg);
364 		new = (old & ~mask) | (val & mask);
365 		snd_es1938_write_cmd(chip, new);
366 		dev_dbg(chip->card->dev, "Reg %02x was %02x, set to %02x\n",
367 			   reg, old, new);
368 	}
369 	spin_unlock_irqrestore(&chip->reg_lock, flags);
370 	return oval;
371 }
372 
373 /* --------------------------------------------------------------------
374  * Reset the chip
375  * --------------------------------------------------------------------*/
376 static void snd_es1938_reset(struct es1938 *chip)
377 {
378 	int i;
379 
380 	outb(3, SLSB_REG(chip, RESET));
381 	inb(SLSB_REG(chip, RESET));
382 	outb(0, SLSB_REG(chip, RESET));
383 	for (i = 0; i < RESET_LOOP_TIMEOUT; i++) {
384 		if (inb(SLSB_REG(chip, STATUS)) & 0x80) {
385 			if (inb(SLSB_REG(chip, READDATA)) == 0xaa)
386 				goto __next;
387 		}
388 	}
389 	dev_err(chip->card->dev, "ESS Solo-1 reset failed\n");
390 
391      __next:
392 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEEXT);
393 
394 	/* Demand transfer DMA: 4 bytes per DMA request */
395 	snd_es1938_write(chip, ESS_CMD_DMATYPE, 2);
396 
397 	/* Change behaviour of register A1
398 	   4x oversampling
399 	   2nd channel DAC asynchronous */
400 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2MODE, 0x32);
401 	/* enable/select DMA channel and IRQ channel */
402 	snd_es1938_bits(chip, ESS_CMD_IRQCONTROL, 0xf0, 0x50);
403 	snd_es1938_bits(chip, ESS_CMD_DRQCONTROL, 0xf0, 0x50);
404 	snd_es1938_write_cmd(chip, ESS_CMD_ENABLEAUDIO1);
405 	/* Set spatializer parameters to recommended values */
406 	snd_es1938_mixer_write(chip, 0x54, 0x8f);
407 	snd_es1938_mixer_write(chip, 0x56, 0x95);
408 	snd_es1938_mixer_write(chip, 0x58, 0x94);
409 	snd_es1938_mixer_write(chip, 0x5a, 0x80);
410 }
411 
412 /* --------------------------------------------------------------------
413  * Reset the FIFOs
414  * --------------------------------------------------------------------*/
415 static void snd_es1938_reset_fifo(struct es1938 *chip)
416 {
417 	outb(2, SLSB_REG(chip, RESET));
418 	outb(0, SLSB_REG(chip, RESET));
419 }
420 
421 static const struct snd_ratnum clocks[2] = {
422 	{
423 		.num = 793800,
424 		.den_min = 1,
425 		.den_max = 128,
426 		.den_step = 1,
427 	},
428 	{
429 		.num = 768000,
430 		.den_min = 1,
431 		.den_max = 128,
432 		.den_step = 1,
433 	}
434 };
435 
436 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
437 	.nrats = 2,
438 	.rats = clocks,
439 };
440 
441 
442 static void snd_es1938_rate_set(struct es1938 *chip,
443 				struct snd_pcm_substream *substream,
444 				int mode)
445 {
446 	unsigned int bits, div0;
447 	struct snd_pcm_runtime *runtime = substream->runtime;
448 	if (runtime->rate_num == clocks[0].num)
449 		bits = 128 - runtime->rate_den;
450 	else
451 		bits = 256 - runtime->rate_den;
452 
453 	/* set filter register */
454 	div0 = 256 - 7160000*20/(8*82*runtime->rate);
455 
456 	if (mode == DAC2) {
457 		snd_es1938_mixer_write(chip, 0x70, bits);
458 		snd_es1938_mixer_write(chip, 0x72, div0);
459 	} else {
460 		snd_es1938_write(chip, 0xA1, bits);
461 		snd_es1938_write(chip, 0xA2, div0);
462 	}
463 }
464 
465 /* --------------------------------------------------------------------
466  * Configure Solo1 builtin DMA Controller
467  * --------------------------------------------------------------------*/
468 
469 static void snd_es1938_playback1_setdma(struct es1938 *chip)
470 {
471 	outb(0x00, SLIO_REG(chip, AUDIO2MODE));
472 	outl(chip->dma2_start, SLIO_REG(chip, AUDIO2DMAADDR));
473 	outw(0, SLIO_REG(chip, AUDIO2DMACOUNT));
474 	outw(chip->dma2_size, SLIO_REG(chip, AUDIO2DMACOUNT));
475 }
476 
477 static void snd_es1938_playback2_setdma(struct es1938 *chip)
478 {
479 	/* Enable DMA controller */
480 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
481 	/* 1. Master reset */
482 	outb(0, SLDM_REG(chip, DMACLEAR));
483 	/* 2. Mask DMA */
484 	outb(1, SLDM_REG(chip, DMAMASK));
485 	outb(0x18, SLDM_REG(chip, DMAMODE));
486 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
487 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
488 	/* 3. Unmask DMA */
489 	outb(0, SLDM_REG(chip, DMAMASK));
490 }
491 
492 static void snd_es1938_capture_setdma(struct es1938 *chip)
493 {
494 	/* Enable DMA controller */
495 	outb(0xc4, SLDM_REG(chip, DMACOMMAND));
496 	/* 1. Master reset */
497 	outb(0, SLDM_REG(chip, DMACLEAR));
498 	/* 2. Mask DMA */
499 	outb(1, SLDM_REG(chip, DMAMASK));
500 	outb(0x14, SLDM_REG(chip, DMAMODE));
501 	outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
502 	chip->last_capture_dmaaddr = chip->dma1_start;
503 	outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
504 	/* 3. Unmask DMA */
505 	outb(0, SLDM_REG(chip, DMAMASK));
506 }
507 
508 /* ----------------------------------------------------------------------
509  *
510  *                           *** PCM part ***
511  */
512 
513 static int snd_es1938_capture_trigger(struct snd_pcm_substream *substream,
514 				      int cmd)
515 {
516 	struct es1938 *chip = snd_pcm_substream_chip(substream);
517 	int val;
518 	switch (cmd) {
519 	case SNDRV_PCM_TRIGGER_START:
520 	case SNDRV_PCM_TRIGGER_RESUME:
521 		val = 0x0f;
522 		chip->active |= ADC1;
523 		break;
524 	case SNDRV_PCM_TRIGGER_STOP:
525 	case SNDRV_PCM_TRIGGER_SUSPEND:
526 		val = 0x00;
527 		chip->active &= ~ADC1;
528 		break;
529 	default:
530 		return -EINVAL;
531 	}
532 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
533 	return 0;
534 }
535 
536 static int snd_es1938_playback1_trigger(struct snd_pcm_substream *substream,
537 					int cmd)
538 {
539 	struct es1938 *chip = snd_pcm_substream_chip(substream);
540 	switch (cmd) {
541 	case SNDRV_PCM_TRIGGER_START:
542 	case SNDRV_PCM_TRIGGER_RESUME:
543 		/* According to the documentation this should be:
544 		   0x13 but that value may randomly swap stereo channels */
545                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x92);
546                 udelay(10);
547 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x93);
548                 /* This two stage init gives the FIFO -> DAC connection time to
549                  * settle before first data from DMA flows in.  This should ensure
550                  * no swapping of stereo channels.  Report a bug if otherwise :-) */
551 		outb(0x0a, SLIO_REG(chip, AUDIO2MODE));
552 		chip->active |= DAC2;
553 		break;
554 	case SNDRV_PCM_TRIGGER_STOP:
555 	case SNDRV_PCM_TRIGGER_SUSPEND:
556 		outb(0, SLIO_REG(chip, AUDIO2MODE));
557 		snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0);
558 		chip->active &= ~DAC2;
559 		break;
560 	default:
561 		return -EINVAL;
562 	}
563 	return 0;
564 }
565 
566 static int snd_es1938_playback2_trigger(struct snd_pcm_substream *substream,
567 					int cmd)
568 {
569 	struct es1938 *chip = snd_pcm_substream_chip(substream);
570 	int val;
571 	switch (cmd) {
572 	case SNDRV_PCM_TRIGGER_START:
573 	case SNDRV_PCM_TRIGGER_RESUME:
574 		val = 5;
575 		chip->active |= DAC1;
576 		break;
577 	case SNDRV_PCM_TRIGGER_STOP:
578 	case SNDRV_PCM_TRIGGER_SUSPEND:
579 		val = 0;
580 		chip->active &= ~DAC1;
581 		break;
582 	default:
583 		return -EINVAL;
584 	}
585 	snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
586 	return 0;
587 }
588 
589 static int snd_es1938_playback_trigger(struct snd_pcm_substream *substream,
590 				       int cmd)
591 {
592 	switch (substream->number) {
593 	case 0:
594 		return snd_es1938_playback1_trigger(substream, cmd);
595 	case 1:
596 		return snd_es1938_playback2_trigger(substream, cmd);
597 	}
598 	snd_BUG();
599 	return -EINVAL;
600 }
601 
602 /* --------------------------------------------------------------------
603  * First channel for Extended Mode Audio 1 ADC Operation
604  * --------------------------------------------------------------------*/
605 static int snd_es1938_capture_prepare(struct snd_pcm_substream *substream)
606 {
607 	struct es1938 *chip = snd_pcm_substream_chip(substream);
608 	struct snd_pcm_runtime *runtime = substream->runtime;
609 	int u, is8, mono;
610 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
611 	unsigned int count = snd_pcm_lib_period_bytes(substream);
612 
613 	chip->dma1_size = size;
614 	chip->dma1_start = runtime->dma_addr;
615 
616 	mono = (runtime->channels > 1) ? 0 : 1;
617 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
618 	u = snd_pcm_format_unsigned(runtime->format);
619 
620 	chip->dma1_shift = 2 - mono - is8;
621 
622 	snd_es1938_reset_fifo(chip);
623 
624 	/* program type */
625 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
626 
627 	/* set clock and counters */
628         snd_es1938_rate_set(chip, substream, ADC1);
629 
630 	count = 0x10000 - count;
631 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
632 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
633 
634 	/* initialize and configure ADC */
635 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, u ? 0x51 : 0x71);
636 	snd_es1938_write(chip, ESS_CMD_SETFORMAT2, 0x90 |
637 		       (u ? 0x00 : 0x20) |
638 		       (is8 ? 0x00 : 0x04) |
639 		       (mono ? 0x40 : 0x08));
640 
641 	//	snd_es1938_reset_fifo(chip);
642 
643 	/* 11. configure system interrupt controller and DMA controller */
644 	snd_es1938_capture_setdma(chip);
645 
646 	return 0;
647 }
648 
649 
650 /* ------------------------------------------------------------------------------
651  * Second Audio channel DAC Operation
652  * ------------------------------------------------------------------------------*/
653 static int snd_es1938_playback1_prepare(struct snd_pcm_substream *substream)
654 {
655 	struct es1938 *chip = snd_pcm_substream_chip(substream);
656 	struct snd_pcm_runtime *runtime = substream->runtime;
657 	int u, is8, mono;
658 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
659 	unsigned int count = snd_pcm_lib_period_bytes(substream);
660 
661 	chip->dma2_size = size;
662 	chip->dma2_start = runtime->dma_addr;
663 
664 	mono = (runtime->channels > 1) ? 0 : 1;
665 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
666 	u = snd_pcm_format_unsigned(runtime->format);
667 
668 	chip->dma2_shift = 2 - mono - is8;
669 
670         snd_es1938_reset_fifo(chip);
671 
672 	/* set clock and counters */
673         snd_es1938_rate_set(chip, substream, DAC2);
674 
675 	count >>= 1;
676 	count = 0x10000 - count;
677 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTL, count & 0xff);
678 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTH, count >> 8);
679 
680 	/* initialize and configure Audio 2 DAC */
681 	snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x40 | (u ? 0 : 4) |
682 			       (mono ? 0 : 2) | (is8 ? 0 : 1));
683 
684 	/* program DMA */
685 	snd_es1938_playback1_setdma(chip);
686 
687 	return 0;
688 }
689 
690 static int snd_es1938_playback2_prepare(struct snd_pcm_substream *substream)
691 {
692 	struct es1938 *chip = snd_pcm_substream_chip(substream);
693 	struct snd_pcm_runtime *runtime = substream->runtime;
694 	int u, is8, mono;
695 	unsigned int size = snd_pcm_lib_buffer_bytes(substream);
696 	unsigned int count = snd_pcm_lib_period_bytes(substream);
697 
698 	chip->dma1_size = size;
699 	chip->dma1_start = runtime->dma_addr;
700 
701 	mono = (runtime->channels > 1) ? 0 : 1;
702 	is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
703 	u = snd_pcm_format_unsigned(runtime->format);
704 
705 	chip->dma1_shift = 2 - mono - is8;
706 
707 	count = 0x10000 - count;
708 
709 	/* reset */
710 	snd_es1938_reset_fifo(chip);
711 
712 	snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
713 
714 	/* set clock and counters */
715         snd_es1938_rate_set(chip, substream, DAC1);
716 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
717 	snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
718 
719 	/* initialized and configure DAC */
720         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x80 : 0x00);
721         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x51 : 0x71);
722         snd_es1938_write(chip, ESS_CMD_SETFORMAT2,
723 			 0x90 | (mono ? 0x40 : 0x08) |
724 			 (is8 ? 0x00 : 0x04) | (u ? 0x00 : 0x20));
725 
726 	/* program DMA */
727 	snd_es1938_playback2_setdma(chip);
728 
729 	return 0;
730 }
731 
732 static int snd_es1938_playback_prepare(struct snd_pcm_substream *substream)
733 {
734 	switch (substream->number) {
735 	case 0:
736 		return snd_es1938_playback1_prepare(substream);
737 	case 1:
738 		return snd_es1938_playback2_prepare(substream);
739 	}
740 	snd_BUG();
741 	return -EINVAL;
742 }
743 
744 /* during the incrementing of dma counters the DMA register reads sometimes
745    returns garbage. To ensure a valid hw pointer, the following checks which
746    should be very unlikely to fail are used:
747    - is the current DMA address in the valid DMA range ?
748    - is the sum of DMA address and DMA counter pointing to the last DMA byte ?
749    One can argue this could differ by one byte depending on which register is
750    updated first, so the implementation below allows for that.
751 */
752 static snd_pcm_uframes_t snd_es1938_capture_pointer(struct snd_pcm_substream *substream)
753 {
754 	struct es1938 *chip = snd_pcm_substream_chip(substream);
755 	size_t ptr;
756 #if 0
757 	size_t old, new;
758 	/* This stuff is *needed*, don't ask why - AB */
759 	old = inw(SLDM_REG(chip, DMACOUNT));
760 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
761 		old = new;
762 	ptr = chip->dma1_size - 1 - new;
763 #else
764 	size_t count;
765 	unsigned int diff;
766 
767 	ptr = inl(SLDM_REG(chip, DMAADDR));
768 	count = inw(SLDM_REG(chip, DMACOUNT));
769 	diff = chip->dma1_start + chip->dma1_size - ptr - count;
770 
771 	if (diff > 3 || ptr < chip->dma1_start
772 	      || ptr >= chip->dma1_start+chip->dma1_size)
773 	  ptr = chip->last_capture_dmaaddr;            /* bad, use last saved */
774 	else
775 	  chip->last_capture_dmaaddr = ptr;            /* good, remember it */
776 
777 	ptr -= chip->dma1_start;
778 #endif
779 	return ptr >> chip->dma1_shift;
780 }
781 
782 static snd_pcm_uframes_t snd_es1938_playback1_pointer(struct snd_pcm_substream *substream)
783 {
784 	struct es1938 *chip = snd_pcm_substream_chip(substream);
785 	size_t ptr;
786 #if 1
787 	ptr = chip->dma2_size - inw(SLIO_REG(chip, AUDIO2DMACOUNT));
788 #else
789 	ptr = inl(SLIO_REG(chip, AUDIO2DMAADDR)) - chip->dma2_start;
790 #endif
791 	return ptr >> chip->dma2_shift;
792 }
793 
794 static snd_pcm_uframes_t snd_es1938_playback2_pointer(struct snd_pcm_substream *substream)
795 {
796 	struct es1938 *chip = snd_pcm_substream_chip(substream);
797 	size_t ptr;
798 	size_t old, new;
799 #if 1
800 	/* This stuff is *needed*, don't ask why - AB */
801 	old = inw(SLDM_REG(chip, DMACOUNT));
802 	while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
803 		old = new;
804 	ptr = chip->dma1_size - 1 - new;
805 #else
806 	ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
807 #endif
808 	return ptr >> chip->dma1_shift;
809 }
810 
811 static snd_pcm_uframes_t snd_es1938_playback_pointer(struct snd_pcm_substream *substream)
812 {
813 	switch (substream->number) {
814 	case 0:
815 		return snd_es1938_playback1_pointer(substream);
816 	case 1:
817 		return snd_es1938_playback2_pointer(substream);
818 	}
819 	snd_BUG();
820 	return -EINVAL;
821 }
822 
823 static int snd_es1938_capture_copy(struct snd_pcm_substream *substream,
824 				   int channel, unsigned long pos,
825 				   struct iov_iter *dst, unsigned long count)
826 {
827 	struct snd_pcm_runtime *runtime = substream->runtime;
828 	struct es1938 *chip = snd_pcm_substream_chip(substream);
829 
830 	if (snd_BUG_ON(pos + count > chip->dma1_size))
831 		return -EINVAL;
832 	if (pos + count < chip->dma1_size) {
833 		if (copy_to_iter(runtime->dma_area + pos + 1, count, dst) != count)
834 			return -EFAULT;
835 	} else {
836 		if (copy_to_iter(runtime->dma_area + pos + 1, count - 1, dst) != count - 1)
837 			return -EFAULT;
838 		if (copy_to_iter(runtime->dma_area, 1, dst) != 1)
839 			return -EFAULT;
840 	}
841 	return 0;
842 }
843 
844 /* ----------------------------------------------------------------------
845  * Audio1 Capture (ADC)
846  * ----------------------------------------------------------------------*/
847 static const struct snd_pcm_hardware snd_es1938_capture =
848 {
849 	.info =			(SNDRV_PCM_INFO_INTERLEAVED |
850 				SNDRV_PCM_INFO_BLOCK_TRANSFER),
851 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
852 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
853 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
854 	.rate_min =		6000,
855 	.rate_max =		48000,
856 	.channels_min =		1,
857 	.channels_max =		2,
858         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
859 	.period_bytes_min =	64,
860 	.period_bytes_max =	0x8000,
861 	.periods_min =		1,
862 	.periods_max =		1024,
863 	.fifo_size =		256,
864 };
865 
866 /* -----------------------------------------------------------------------
867  * Audio2 Playback (DAC)
868  * -----------------------------------------------------------------------*/
869 static const struct snd_pcm_hardware snd_es1938_playback =
870 {
871 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
872 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
873 				 SNDRV_PCM_INFO_MMAP_VALID),
874 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
875 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
876 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
877 	.rate_min =		6000,
878 	.rate_max =		48000,
879 	.channels_min =		1,
880 	.channels_max =		2,
881         .buffer_bytes_max =	0x8000,       /* DMA controller screws on higher values */
882 	.period_bytes_min =	64,
883 	.period_bytes_max =	0x8000,
884 	.periods_min =		1,
885 	.periods_max =		1024,
886 	.fifo_size =		256,
887 };
888 
889 static int snd_es1938_capture_open(struct snd_pcm_substream *substream)
890 {
891 	struct es1938 *chip = snd_pcm_substream_chip(substream);
892 	struct snd_pcm_runtime *runtime = substream->runtime;
893 
894 	if (chip->playback2_substream)
895 		return -EAGAIN;
896 	chip->capture_substream = substream;
897 	runtime->hw = snd_es1938_capture;
898 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
899 				      &hw_constraints_clocks);
900 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
901 	return 0;
902 }
903 
904 static int snd_es1938_playback_open(struct snd_pcm_substream *substream)
905 {
906 	struct es1938 *chip = snd_pcm_substream_chip(substream);
907 	struct snd_pcm_runtime *runtime = substream->runtime;
908 
909 	switch (substream->number) {
910 	case 0:
911 		chip->playback1_substream = substream;
912 		break;
913 	case 1:
914 		if (chip->capture_substream)
915 			return -EAGAIN;
916 		chip->playback2_substream = substream;
917 		break;
918 	default:
919 		snd_BUG();
920 		return -EINVAL;
921 	}
922 	runtime->hw = snd_es1938_playback;
923 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
924 				      &hw_constraints_clocks);
925 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
926 	return 0;
927 }
928 
929 static int snd_es1938_capture_close(struct snd_pcm_substream *substream)
930 {
931 	struct es1938 *chip = snd_pcm_substream_chip(substream);
932 
933 	chip->capture_substream = NULL;
934 	return 0;
935 }
936 
937 static int snd_es1938_playback_close(struct snd_pcm_substream *substream)
938 {
939 	struct es1938 *chip = snd_pcm_substream_chip(substream);
940 
941 	switch (substream->number) {
942 	case 0:
943 		chip->playback1_substream = NULL;
944 		break;
945 	case 1:
946 		chip->playback2_substream = NULL;
947 		break;
948 	default:
949 		snd_BUG();
950 		return -EINVAL;
951 	}
952 	return 0;
953 }
954 
955 static const struct snd_pcm_ops snd_es1938_playback_ops = {
956 	.open =		snd_es1938_playback_open,
957 	.close =	snd_es1938_playback_close,
958 	.prepare =	snd_es1938_playback_prepare,
959 	.trigger =	snd_es1938_playback_trigger,
960 	.pointer =	snd_es1938_playback_pointer,
961 };
962 
963 static const struct snd_pcm_ops snd_es1938_capture_ops = {
964 	.open =		snd_es1938_capture_open,
965 	.close =	snd_es1938_capture_close,
966 	.prepare =	snd_es1938_capture_prepare,
967 	.trigger =	snd_es1938_capture_trigger,
968 	.pointer =	snd_es1938_capture_pointer,
969 	.copy =		snd_es1938_capture_copy,
970 };
971 
972 static int snd_es1938_new_pcm(struct es1938 *chip, int device)
973 {
974 	struct snd_pcm *pcm;
975 	int err;
976 
977 	err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm);
978 	if (err < 0)
979 		return err;
980 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1938_playback_ops);
981 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1938_capture_ops);
982 
983 	pcm->private_data = chip;
984 	pcm->info_flags = 0;
985 	strcpy(pcm->name, "ESS Solo-1");
986 
987 	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
988 				       &chip->pci->dev, 64*1024, 64*1024);
989 
990 	chip->pcm = pcm;
991 	return 0;
992 }
993 
994 /* -------------------------------------------------------------------
995  *
996  *                       *** Mixer part ***
997  */
998 
999 static int snd_es1938_info_mux(struct snd_kcontrol *kcontrol,
1000 			       struct snd_ctl_elem_info *uinfo)
1001 {
1002 	static const char * const texts[8] = {
1003 		"Mic", "Mic Master", "CD", "AOUT",
1004 		"Mic1", "Mix", "Line", "Master"
1005 	};
1006 
1007 	return snd_ctl_enum_info(uinfo, 1, 8, texts);
1008 }
1009 
1010 static int snd_es1938_get_mux(struct snd_kcontrol *kcontrol,
1011 			      struct snd_ctl_elem_value *ucontrol)
1012 {
1013 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1014 	ucontrol->value.enumerated.item[0] = snd_es1938_mixer_read(chip, 0x1c) & 0x07;
1015 	return 0;
1016 }
1017 
1018 static int snd_es1938_put_mux(struct snd_kcontrol *kcontrol,
1019 			      struct snd_ctl_elem_value *ucontrol)
1020 {
1021 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1022 	unsigned char val = ucontrol->value.enumerated.item[0];
1023 
1024 	if (val > 7)
1025 		return -EINVAL;
1026 	return snd_es1938_mixer_bits(chip, 0x1c, 0x07, val) != val;
1027 }
1028 
1029 #define snd_es1938_info_spatializer_enable	snd_ctl_boolean_mono_info
1030 
1031 static int snd_es1938_get_spatializer_enable(struct snd_kcontrol *kcontrol,
1032 					     struct snd_ctl_elem_value *ucontrol)
1033 {
1034 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1035 	unsigned char val = snd_es1938_mixer_read(chip, 0x50);
1036 	ucontrol->value.integer.value[0] = !!(val & 8);
1037 	return 0;
1038 }
1039 
1040 static int snd_es1938_put_spatializer_enable(struct snd_kcontrol *kcontrol,
1041 					     struct snd_ctl_elem_value *ucontrol)
1042 {
1043 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1044 	unsigned char oval, nval;
1045 	int change;
1046 	nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
1047 	oval = snd_es1938_mixer_read(chip, 0x50) & 0x0c;
1048 	change = nval != oval;
1049 	if (change) {
1050 		snd_es1938_mixer_write(chip, 0x50, nval & ~0x04);
1051 		snd_es1938_mixer_write(chip, 0x50, nval);
1052 	}
1053 	return change;
1054 }
1055 
1056 static int snd_es1938_info_hw_volume(struct snd_kcontrol *kcontrol,
1057 				     struct snd_ctl_elem_info *uinfo)
1058 {
1059 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1060 	uinfo->count = 2;
1061 	uinfo->value.integer.min = 0;
1062 	uinfo->value.integer.max = 63;
1063 	return 0;
1064 }
1065 
1066 static int snd_es1938_get_hw_volume(struct snd_kcontrol *kcontrol,
1067 				    struct snd_ctl_elem_value *ucontrol)
1068 {
1069 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1070 	ucontrol->value.integer.value[0] = snd_es1938_mixer_read(chip, 0x61) & 0x3f;
1071 	ucontrol->value.integer.value[1] = snd_es1938_mixer_read(chip, 0x63) & 0x3f;
1072 	return 0;
1073 }
1074 
1075 #define snd_es1938_info_hw_switch		snd_ctl_boolean_stereo_info
1076 
1077 static int snd_es1938_get_hw_switch(struct snd_kcontrol *kcontrol,
1078 				    struct snd_ctl_elem_value *ucontrol)
1079 {
1080 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1081 	ucontrol->value.integer.value[0] = !(snd_es1938_mixer_read(chip, 0x61) & 0x40);
1082 	ucontrol->value.integer.value[1] = !(snd_es1938_mixer_read(chip, 0x63) & 0x40);
1083 	return 0;
1084 }
1085 
1086 static void snd_es1938_hwv_free(struct snd_kcontrol *kcontrol)
1087 {
1088 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1089 	chip->master_volume = NULL;
1090 	chip->master_switch = NULL;
1091 	chip->hw_volume = NULL;
1092 	chip->hw_switch = NULL;
1093 }
1094 
1095 static int snd_es1938_reg_bits(struct es1938 *chip, unsigned char reg,
1096 			       unsigned char mask, unsigned char val)
1097 {
1098 	if (reg < 0xa0)
1099 		return snd_es1938_mixer_bits(chip, reg, mask, val);
1100 	else
1101 		return snd_es1938_bits(chip, reg, mask, val);
1102 }
1103 
1104 static int snd_es1938_reg_read(struct es1938 *chip, unsigned char reg)
1105 {
1106 	if (reg < 0xa0)
1107 		return snd_es1938_mixer_read(chip, reg);
1108 	else
1109 		return snd_es1938_read(chip, reg);
1110 }
1111 
1112 #define ES1938_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv)    \
1113 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1114   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1115   .name = xname, .index = xindex, \
1116   .info = snd_es1938_info_single, \
1117   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1118   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24), \
1119   .tlv = { .p = xtlv } }
1120 #define ES1938_SINGLE(xname, xindex, reg, shift, mask, invert) \
1121 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1122   .info = snd_es1938_info_single, \
1123   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1124   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1125 
1126 static int snd_es1938_info_single(struct snd_kcontrol *kcontrol,
1127 				  struct snd_ctl_elem_info *uinfo)
1128 {
1129 	int mask = (kcontrol->private_value >> 16) & 0xff;
1130 
1131 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1132 	uinfo->count = 1;
1133 	uinfo->value.integer.min = 0;
1134 	uinfo->value.integer.max = mask;
1135 	return 0;
1136 }
1137 
1138 static int snd_es1938_get_single(struct snd_kcontrol *kcontrol,
1139 				 struct snd_ctl_elem_value *ucontrol)
1140 {
1141 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1142 	int reg = kcontrol->private_value & 0xff;
1143 	int shift = (kcontrol->private_value >> 8) & 0xff;
1144 	int mask = (kcontrol->private_value >> 16) & 0xff;
1145 	int invert = (kcontrol->private_value >> 24) & 0xff;
1146 	int val;
1147 
1148 	val = snd_es1938_reg_read(chip, reg);
1149 	ucontrol->value.integer.value[0] = (val >> shift) & mask;
1150 	if (invert)
1151 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1152 	return 0;
1153 }
1154 
1155 static int snd_es1938_put_single(struct snd_kcontrol *kcontrol,
1156 				 struct snd_ctl_elem_value *ucontrol)
1157 {
1158 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1159 	int reg = kcontrol->private_value & 0xff;
1160 	int shift = (kcontrol->private_value >> 8) & 0xff;
1161 	int mask = (kcontrol->private_value >> 16) & 0xff;
1162 	int invert = (kcontrol->private_value >> 24) & 0xff;
1163 	unsigned char val;
1164 
1165 	val = (ucontrol->value.integer.value[0] & mask);
1166 	if (invert)
1167 		val = mask - val;
1168 	mask <<= shift;
1169 	val <<= shift;
1170 	return snd_es1938_reg_bits(chip, reg, mask, val) != val;
1171 }
1172 
1173 #define ES1938_DOUBLE_TLV(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert, xtlv) \
1174 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1175   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1176   .name = xname, .index = xindex, \
1177   .info = snd_es1938_info_double, \
1178   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1179   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22), \
1180   .tlv = { .p = xtlv } }
1181 #define ES1938_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1182 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1183   .info = snd_es1938_info_double, \
1184   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1185   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1186 
1187 static int snd_es1938_info_double(struct snd_kcontrol *kcontrol,
1188 				  struct snd_ctl_elem_info *uinfo)
1189 {
1190 	int mask = (kcontrol->private_value >> 24) & 0xff;
1191 
1192 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1193 	uinfo->count = 2;
1194 	uinfo->value.integer.min = 0;
1195 	uinfo->value.integer.max = mask;
1196 	return 0;
1197 }
1198 
1199 static int snd_es1938_get_double(struct snd_kcontrol *kcontrol,
1200 				 struct snd_ctl_elem_value *ucontrol)
1201 {
1202 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1203 	int left_reg = kcontrol->private_value & 0xff;
1204 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1205 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1206 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1207 	int mask = (kcontrol->private_value >> 24) & 0xff;
1208 	int invert = (kcontrol->private_value >> 22) & 1;
1209 	unsigned char left, right;
1210 
1211 	left = snd_es1938_reg_read(chip, left_reg);
1212 	if (left_reg != right_reg)
1213 		right = snd_es1938_reg_read(chip, right_reg);
1214 	else
1215 		right = left;
1216 	ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1217 	ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1218 	if (invert) {
1219 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1220 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1221 	}
1222 	return 0;
1223 }
1224 
1225 static int snd_es1938_put_double(struct snd_kcontrol *kcontrol,
1226 				 struct snd_ctl_elem_value *ucontrol)
1227 {
1228 	struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1229 	int left_reg = kcontrol->private_value & 0xff;
1230 	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1231 	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1232 	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1233 	int mask = (kcontrol->private_value >> 24) & 0xff;
1234 	int invert = (kcontrol->private_value >> 22) & 1;
1235 	int change;
1236 	unsigned char val1, val2, mask1, mask2;
1237 
1238 	val1 = ucontrol->value.integer.value[0] & mask;
1239 	val2 = ucontrol->value.integer.value[1] & mask;
1240 	if (invert) {
1241 		val1 = mask - val1;
1242 		val2 = mask - val2;
1243 	}
1244 	val1 <<= shift_left;
1245 	val2 <<= shift_right;
1246 	mask1 = mask << shift_left;
1247 	mask2 = mask << shift_right;
1248 	if (left_reg != right_reg) {
1249 		change = 0;
1250 		if (snd_es1938_reg_bits(chip, left_reg, mask1, val1) != val1)
1251 			change = 1;
1252 		if (snd_es1938_reg_bits(chip, right_reg, mask2, val2) != val2)
1253 			change = 1;
1254 	} else {
1255 		change = (snd_es1938_reg_bits(chip, left_reg, mask1 | mask2,
1256 					      val1 | val2) != (val1 | val2));
1257 	}
1258 	return change;
1259 }
1260 
1261 static const DECLARE_TLV_DB_RANGE(db_scale_master,
1262 	0, 54, TLV_DB_SCALE_ITEM(-3600, 50, 1),
1263 	54, 63, TLV_DB_SCALE_ITEM(-900, 100, 0),
1264 );
1265 
1266 static const DECLARE_TLV_DB_RANGE(db_scale_audio1,
1267 	0, 8, TLV_DB_SCALE_ITEM(-3300, 300, 1),
1268 	8, 15, TLV_DB_SCALE_ITEM(-900, 150, 0),
1269 );
1270 
1271 static const DECLARE_TLV_DB_RANGE(db_scale_audio2,
1272 	0, 8, TLV_DB_SCALE_ITEM(-3450, 300, 1),
1273 	8, 15, TLV_DB_SCALE_ITEM(-1050, 150, 0),
1274 );
1275 
1276 static const DECLARE_TLV_DB_RANGE(db_scale_mic,
1277 	0, 8, TLV_DB_SCALE_ITEM(-2400, 300, 1),
1278 	8, 15, TLV_DB_SCALE_ITEM(0, 150, 0),
1279 );
1280 
1281 static const DECLARE_TLV_DB_RANGE(db_scale_line,
1282 	0, 8, TLV_DB_SCALE_ITEM(-3150, 300, 1),
1283 	8, 15, TLV_DB_SCALE_ITEM(-750, 150, 0),
1284 );
1285 
1286 static const DECLARE_TLV_DB_SCALE(db_scale_capture, 0, 150, 0);
1287 
1288 static const struct snd_kcontrol_new snd_es1938_controls[] = {
1289 ES1938_DOUBLE_TLV("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0,
1290 		  db_scale_master),
1291 ES1938_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1292 {
1293 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1294 	.name = "Hardware Master Playback Volume",
1295 	.access = SNDRV_CTL_ELEM_ACCESS_READ,
1296 	.info = snd_es1938_info_hw_volume,
1297 	.get = snd_es1938_get_hw_volume,
1298 },
1299 {
1300 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1301 	.access = (SNDRV_CTL_ELEM_ACCESS_READ |
1302 		   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1303 	.name = "Hardware Master Playback Switch",
1304 	.info = snd_es1938_info_hw_switch,
1305 	.get = snd_es1938_get_hw_switch,
1306 	.tlv = { .p = db_scale_master },
1307 },
1308 ES1938_SINGLE("Hardware Volume Split", 0, 0x64, 7, 1, 0),
1309 ES1938_DOUBLE_TLV("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0,
1310 		  db_scale_line),
1311 ES1938_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1312 ES1938_DOUBLE_TLV("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0,
1313 		  db_scale_mic),
1314 ES1938_DOUBLE_TLV("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1315 		  db_scale_line),
1316 ES1938_DOUBLE_TLV("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0,
1317 		  db_scale_mic),
1318 ES1938_DOUBLE_TLV("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0,
1319 		  db_scale_line),
1320 ES1938_DOUBLE_TLV("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0,
1321 		  db_scale_capture),
1322 ES1938_SINGLE("Beep Volume", 0, 0x3c, 0, 7, 0),
1323 ES1938_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1324 ES1938_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1325 {
1326 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1327 	.name = "Capture Source",
1328 	.info = snd_es1938_info_mux,
1329 	.get = snd_es1938_get_mux,
1330 	.put = snd_es1938_put_mux,
1331 },
1332 ES1938_DOUBLE_TLV("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1333 		  db_scale_line),
1334 ES1938_DOUBLE_TLV("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0,
1335 		  db_scale_audio2),
1336 ES1938_DOUBLE_TLV("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0,
1337 		  db_scale_mic),
1338 ES1938_DOUBLE_TLV("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0,
1339 		  db_scale_line),
1340 ES1938_DOUBLE_TLV("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0,
1341 		  db_scale_mic),
1342 ES1938_DOUBLE_TLV("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0,
1343 		  db_scale_line),
1344 ES1938_DOUBLE_TLV("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0,
1345 		  db_scale_line),
1346 ES1938_DOUBLE_TLV("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0,
1347 		  db_scale_line),
1348 ES1938_DOUBLE_TLV("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0,
1349 		  db_scale_audio2),
1350 ES1938_DOUBLE_TLV("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0,
1351 		  db_scale_audio1),
1352 ES1938_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1353 {
1354 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1355 	.name = "3D Control - Switch",
1356 	.info = snd_es1938_info_spatializer_enable,
1357 	.get = snd_es1938_get_spatializer_enable,
1358 	.put = snd_es1938_put_spatializer_enable,
1359 },
1360 ES1938_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0)
1361 };
1362 
1363 
1364 /* ---------------------------------------------------------------------------- */
1365 /* ---------------------------------------------------------------------------- */
1366 
1367 /*
1368  * initialize the chip - used by resume callback, too
1369  */
1370 static void snd_es1938_chip_init(struct es1938 *chip)
1371 {
1372 	/* reset chip */
1373 	snd_es1938_reset(chip);
1374 
1375 	/* configure native mode */
1376 
1377 	/* enable bus master */
1378 	pci_set_master(chip->pci);
1379 
1380 	/* disable legacy audio */
1381 	pci_write_config_word(chip->pci, SL_PCI_LEGACYCONTROL, 0x805f);
1382 
1383 	/* set DDMA base */
1384 	pci_write_config_word(chip->pci, SL_PCI_DDMACONTROL, chip->ddma_port | 1);
1385 
1386 	/* set DMA/IRQ policy */
1387 	pci_write_config_dword(chip->pci, SL_PCI_CONFIG, 0);
1388 
1389 	/* enable Audio 1, Audio 2, MPU401 IRQ and HW volume IRQ*/
1390 	outb(0xf0, SLIO_REG(chip, IRQCONTROL));
1391 
1392 	/* reset DMA */
1393 	outb(0, SLDM_REG(chip, DMACLEAR));
1394 }
1395 
1396 /*
1397  * PM support
1398  */
1399 
1400 static const unsigned char saved_regs[SAVED_REG_SIZE+1] = {
1401 	0x14, 0x1a, 0x1c, 0x3a, 0x3c, 0x3e, 0x36, 0x38,
1402 	0x50, 0x52, 0x60, 0x61, 0x62, 0x63, 0x64, 0x68,
1403 	0x69, 0x6a, 0x6b, 0x6d, 0x6e, 0x6f, 0x7c, 0x7d,
1404 	0xa8, 0xb4,
1405 };
1406 
1407 
1408 static int es1938_suspend(struct device *dev)
1409 {
1410 	struct snd_card *card = dev_get_drvdata(dev);
1411 	struct es1938 *chip = card->private_data;
1412 	const unsigned char *s;
1413 	unsigned char *d;
1414 
1415 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1416 
1417 	/* save mixer-related registers */
1418 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++)
1419 		*d = snd_es1938_reg_read(chip, *s);
1420 
1421 	outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
1422 	if (chip->irq >= 0) {
1423 		free_irq(chip->irq, chip);
1424 		chip->irq = -1;
1425 		card->sync_irq = -1;
1426 	}
1427 	return 0;
1428 }
1429 
1430 static int es1938_resume(struct device *dev)
1431 {
1432 	struct pci_dev *pci = to_pci_dev(dev);
1433 	struct snd_card *card = dev_get_drvdata(dev);
1434 	struct es1938 *chip = card->private_data;
1435 	const unsigned char *s;
1436 	unsigned char *d;
1437 
1438 	if (request_irq(pci->irq, snd_es1938_interrupt,
1439 			IRQF_SHARED, KBUILD_MODNAME, chip)) {
1440 		dev_err(dev, "unable to grab IRQ %d, disabling device\n",
1441 			pci->irq);
1442 		snd_card_disconnect(card);
1443 		return -EIO;
1444 	}
1445 	chip->irq = pci->irq;
1446 	card->sync_irq = chip->irq;
1447 	snd_es1938_chip_init(chip);
1448 
1449 	/* restore mixer-related registers */
1450 	for (s = saved_regs, d = chip->saved_regs; *s; s++, d++) {
1451 		if (*s < 0xa0)
1452 			snd_es1938_mixer_write(chip, *s, *d);
1453 		else
1454 			snd_es1938_write(chip, *s, *d);
1455 	}
1456 
1457 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1458 	return 0;
1459 }
1460 
1461 static DEFINE_SIMPLE_DEV_PM_OPS(es1938_pm, es1938_suspend, es1938_resume);
1462 
1463 #ifdef SUPPORT_JOYSTICK
1464 static int snd_es1938_create_gameport(struct es1938 *chip)
1465 {
1466 	struct gameport *gp;
1467 
1468 	chip->gameport = gp = gameport_allocate_port();
1469 	if (!gp) {
1470 		dev_err(chip->card->dev,
1471 			"cannot allocate memory for gameport\n");
1472 		return -ENOMEM;
1473 	}
1474 
1475 	gameport_set_name(gp, "ES1938");
1476 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1477 	gameport_set_dev_parent(gp, &chip->pci->dev);
1478 	gp->io = chip->game_port;
1479 
1480 	gameport_register_port(gp);
1481 
1482 	return 0;
1483 }
1484 
1485 static void snd_es1938_free_gameport(struct es1938 *chip)
1486 {
1487 	if (chip->gameport) {
1488 		gameport_unregister_port(chip->gameport);
1489 		chip->gameport = NULL;
1490 	}
1491 }
1492 #else
1493 static inline int snd_es1938_create_gameport(struct es1938 *chip) { return -ENOSYS; }
1494 static inline void snd_es1938_free_gameport(struct es1938 *chip) { }
1495 #endif /* SUPPORT_JOYSTICK */
1496 
1497 static void snd_es1938_free(struct snd_card *card)
1498 {
1499 	struct es1938 *chip = card->private_data;
1500 
1501 	/* disable irqs */
1502 	outb(0x00, SLIO_REG(chip, IRQCONTROL));
1503 	if (chip->rmidi)
1504 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
1505 
1506 	snd_es1938_free_gameport(chip);
1507 
1508 	if (chip->irq >= 0)
1509 		free_irq(chip->irq, chip);
1510 }
1511 
1512 static int snd_es1938_create(struct snd_card *card,
1513 			     struct pci_dev *pci)
1514 {
1515 	struct es1938 *chip = card->private_data;
1516 	int err;
1517 
1518 	/* enable PCI device */
1519 	err = pcim_enable_device(pci);
1520 	if (err < 0)
1521 		return err;
1522         /* check, if we can restrict PCI DMA transfers to 24 bits */
1523 	if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(24))) {
1524 		dev_err(card->dev,
1525 			"architecture does not support 24bit PCI busmaster DMA\n");
1526                 return -ENXIO;
1527         }
1528 
1529 	spin_lock_init(&chip->reg_lock);
1530 	spin_lock_init(&chip->mixer_lock);
1531 	chip->card = card;
1532 	chip->pci = pci;
1533 	chip->irq = -1;
1534 	err = pci_request_regions(pci, "ESS Solo-1");
1535 	if (err < 0)
1536 		return err;
1537 	chip->io_port = pci_resource_start(pci, 0);
1538 	chip->sb_port = pci_resource_start(pci, 1);
1539 	chip->vc_port = pci_resource_start(pci, 2);
1540 	chip->mpu_port = pci_resource_start(pci, 3);
1541 	chip->game_port = pci_resource_start(pci, 4);
1542 	/* still use non-managed irq handler as it's re-acquired at PM resume */
1543 	if (request_irq(pci->irq, snd_es1938_interrupt, IRQF_SHARED,
1544 			KBUILD_MODNAME, chip)) {
1545 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1546 		return -EBUSY;
1547 	}
1548 	chip->irq = pci->irq;
1549 	card->sync_irq = chip->irq;
1550 	card->private_free = snd_es1938_free;
1551 	dev_dbg(card->dev,
1552 		"create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
1553 		   chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);
1554 
1555 	chip->ddma_port = chip->vc_port + 0x00;		/* fix from Thomas Sailer */
1556 
1557 	snd_es1938_chip_init(chip);
1558 	return 0;
1559 }
1560 
1561 /* --------------------------------------------------------------------
1562  * Interrupt handler
1563  * -------------------------------------------------------------------- */
1564 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id)
1565 {
1566 	struct es1938 *chip = dev_id;
1567 	unsigned char status;
1568 	__always_unused unsigned char audiostatus;
1569 	int handled = 0;
1570 
1571 	status = inb(SLIO_REG(chip, IRQCONTROL));
1572 #if 0
1573 	dev_dbg(chip->card->dev,
1574 		"Es1938debug - interrupt status: =0x%x\n", status);
1575 #endif
1576 
1577 	/* AUDIO 1 */
1578 	if (status & 0x10) {
1579 #if 0
1580 		dev_dbg(chip->card->dev,
1581 		       "Es1938debug - AUDIO channel 1 interrupt\n");
1582 		dev_dbg(chip->card->dev,
1583 		       "Es1938debug - AUDIO channel 1 DMAC DMA count: %u\n",
1584 		       inw(SLDM_REG(chip, DMACOUNT)));
1585 		dev_dbg(chip->card->dev,
1586 		       "Es1938debug - AUDIO channel 1 DMAC DMA base: %u\n",
1587 		       inl(SLDM_REG(chip, DMAADDR)));
1588 		dev_dbg(chip->card->dev,
1589 		       "Es1938debug - AUDIO channel 1 DMAC DMA status: 0x%x\n",
1590 		       inl(SLDM_REG(chip, DMASTATUS)));
1591 #endif
1592 		/* clear irq */
1593 		handled = 1;
1594 		audiostatus = inb(SLSB_REG(chip, STATUS));
1595 		if (chip->active & ADC1)
1596 			snd_pcm_period_elapsed(chip->capture_substream);
1597 		else if (chip->active & DAC1)
1598 			snd_pcm_period_elapsed(chip->playback2_substream);
1599 	}
1600 
1601 	/* AUDIO 2 */
1602 	if (status & 0x20) {
1603 #if 0
1604 		dev_dbg(chip->card->dev,
1605 		       "Es1938debug - AUDIO channel 2 interrupt\n");
1606 		dev_dbg(chip->card->dev,
1607 		       "Es1938debug - AUDIO channel 2 DMAC DMA count: %u\n",
1608 		       inw(SLIO_REG(chip, AUDIO2DMACOUNT)));
1609 		dev_dbg(chip->card->dev,
1610 		       "Es1938debug - AUDIO channel 2 DMAC DMA base: %u\n",
1611 		       inl(SLIO_REG(chip, AUDIO2DMAADDR)));
1612 
1613 #endif
1614 		/* clear irq */
1615 		handled = 1;
1616 		snd_es1938_mixer_bits(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x80, 0);
1617 		if (chip->active & DAC2)
1618 			snd_pcm_period_elapsed(chip->playback1_substream);
1619 	}
1620 
1621 	/* Hardware volume */
1622 	if (status & 0x40) {
1623 		int split = snd_es1938_mixer_read(chip, 0x64) & 0x80;
1624 		handled = 1;
1625 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
1626 		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
1627 		if (!split) {
1628 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1629 				       &chip->master_switch->id);
1630 			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1631 				       &chip->master_volume->id);
1632 		}
1633 		/* ack interrupt */
1634 		snd_es1938_mixer_write(chip, 0x66, 0x00);
1635 	}
1636 
1637 	/* MPU401 */
1638 	if (status & 0x80) {
1639 		// the following line is evil! It switches off MIDI interrupt handling after the first interrupt received.
1640 		// replacing the last 0 by 0x40 works for ESS-Solo1, but just doing nothing works as well!
1641 		// andreas@flying-snail.de
1642 		// snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0); /* ack? */
1643 		if (chip->rmidi) {
1644 			handled = 1;
1645 			snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1646 		}
1647 	}
1648 	return IRQ_RETVAL(handled);
1649 }
1650 
1651 #define ES1938_DMA_SIZE 64
1652 
1653 static int snd_es1938_mixer(struct es1938 *chip)
1654 {
1655 	struct snd_card *card;
1656 	unsigned int idx;
1657 	int err;
1658 
1659 	card = chip->card;
1660 
1661 	strcpy(card->mixername, "ESS Solo-1");
1662 
1663 	for (idx = 0; idx < ARRAY_SIZE(snd_es1938_controls); idx++) {
1664 		struct snd_kcontrol *kctl;
1665 		kctl = snd_ctl_new1(&snd_es1938_controls[idx], chip);
1666 		switch (idx) {
1667 			case 0:
1668 				chip->master_volume = kctl;
1669 				kctl->private_free = snd_es1938_hwv_free;
1670 				break;
1671 			case 1:
1672 				chip->master_switch = kctl;
1673 				kctl->private_free = snd_es1938_hwv_free;
1674 				break;
1675 			case 2:
1676 				chip->hw_volume = kctl;
1677 				kctl->private_free = snd_es1938_hwv_free;
1678 				break;
1679 			case 3:
1680 				chip->hw_switch = kctl;
1681 				kctl->private_free = snd_es1938_hwv_free;
1682 				break;
1683 			}
1684 		err = snd_ctl_add(card, kctl);
1685 		if (err < 0)
1686 			return err;
1687 	}
1688 	return 0;
1689 }
1690 
1691 
1692 static int __snd_es1938_probe(struct pci_dev *pci,
1693 			      const struct pci_device_id *pci_id)
1694 {
1695 	static int dev;
1696 	struct snd_card *card;
1697 	struct es1938 *chip;
1698 	struct snd_opl3 *opl3;
1699 	int idx, err;
1700 
1701 	if (dev >= SNDRV_CARDS)
1702 		return -ENODEV;
1703 	if (!enable[dev]) {
1704 		dev++;
1705 		return -ENOENT;
1706 	}
1707 
1708 	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1709 				sizeof(*chip), &card);
1710 	if (err < 0)
1711 		return err;
1712 	chip = card->private_data;
1713 
1714 	for (idx = 0; idx < 5; idx++)
1715 		if (pci_resource_start(pci, idx) == 0 ||
1716 		    !(pci_resource_flags(pci, idx) & IORESOURCE_IO))
1717 			return -ENODEV;
1718 
1719 	err = snd_es1938_create(card, pci);
1720 	if (err < 0)
1721 		return err;
1722 
1723 	strcpy(card->driver, "ES1938");
1724 	strcpy(card->shortname, "ESS ES1938 (Solo-1)");
1725 	sprintf(card->longname, "%s rev %i, irq %i",
1726 		card->shortname,
1727 		chip->revision,
1728 		chip->irq);
1729 
1730 	err = snd_es1938_new_pcm(chip, 0);
1731 	if (err < 0)
1732 		return err;
1733 	err = snd_es1938_mixer(chip);
1734 	if (err < 0)
1735 		return err;
1736 	if (snd_opl3_create(card,
1737 			    SLSB_REG(chip, FMLOWADDR),
1738 			    SLSB_REG(chip, FMHIGHADDR),
1739 			    OPL3_HW_OPL3, 1, &opl3) < 0) {
1740 		dev_err(card->dev, "OPL3 not detected at 0x%lx\n",
1741 			   SLSB_REG(chip, FMLOWADDR));
1742 	} else {
1743 		err = snd_opl3_timer_new(opl3, 0, 1);
1744 		if (err < 0)
1745 	                return err;
1746 		err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
1747 		if (err < 0)
1748 	                return err;
1749 	}
1750 	if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
1751 				chip->mpu_port,
1752 				MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
1753 				-1, &chip->rmidi) < 0) {
1754 		dev_err(card->dev, "unable to initialize MPU-401\n");
1755 	} else {
1756 		// this line is vital for MIDI interrupt handling on ess-solo1
1757 		// andreas@flying-snail.de
1758 		snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0x40);
1759 	}
1760 
1761 	snd_es1938_create_gameport(chip);
1762 
1763 	err = snd_card_register(card);
1764 	if (err < 0)
1765 		return err;
1766 
1767 	pci_set_drvdata(pci, card);
1768 	dev++;
1769 	return 0;
1770 }
1771 
1772 static int snd_es1938_probe(struct pci_dev *pci,
1773 			    const struct pci_device_id *pci_id)
1774 {
1775 	return snd_card_free_on_error(&pci->dev, __snd_es1938_probe(pci, pci_id));
1776 }
1777 
1778 static struct pci_driver es1938_driver = {
1779 	.name = KBUILD_MODNAME,
1780 	.id_table = snd_es1938_ids,
1781 	.probe = snd_es1938_probe,
1782 	.driver = {
1783 		.pm = &es1938_pm,
1784 	},
1785 };
1786 
1787 module_pci_driver(es1938_driver);
1788