xref: /openbmc/linux/sound/pci/ca0106/ca0106_main.c (revision 547840bd)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
4  *  Driver CA0106 chips. e.g. Sound Blaster Audigy LS and Live 24bit
5  *  Version: 0.0.25
6  *
7  *  FEATURES currently supported:
8  *    Front, Rear and Center/LFE.
9  *    Surround40 and Surround51.
10  *    Capture from MIC an LINE IN input.
11  *    SPDIF digital playback of PCM stereo and AC3/DTS works.
12  *    (One can use a standard mono mini-jack to one RCA plugs cable.
13  *     or one can use a standard stereo mini-jack to two RCA plugs cable.
14  *     Plug one of the RCA plugs into the Coax input of the external decoder/receiver.)
15  *    ( In theory one could output 3 different AC3 streams at once, to 3 different SPDIF outputs. )
16  *    Notes on how to capture sound:
17  *      The AC97 is used in the PLAYBACK direction.
18  *      The output from the AC97 chip, instead of reaching the speakers, is fed into the Philips 1361T ADC.
19  *      So, to record from the MIC, set the MIC Playback volume to max,
20  *      unmute the MIC and turn up the MASTER Playback volume.
21  *      So, to prevent feedback when capturing, minimise the "Capture feedback into Playback" volume.
22  *
23  *    The only playback controls that currently do anything are: -
24  *    Analog Front
25  *    Analog Rear
26  *    Analog Center/LFE
27  *    SPDIF Front
28  *    SPDIF Rear
29  *    SPDIF Center/LFE
30  *
31  *    For capture from Mic in or Line in.
32  *    Digital/Analog ( switch must be in Analog mode for CAPTURE. )
33  *
34  *    CAPTURE feedback into PLAYBACK
35  *
36  *  Changelog:
37  *    Support interrupts per period.
38  *    Removed noise from Center/LFE channel when in Analog mode.
39  *    Rename and remove mixer controls.
40  *  0.0.6
41  *    Use separate card based DMA buffer for periods table list.
42  *  0.0.7
43  *    Change remove and rename ctrls into lists.
44  *  0.0.8
45  *    Try to fix capture sources.
46  *  0.0.9
47  *    Fix AC3 output.
48  *    Enable S32_LE format support.
49  *  0.0.10
50  *    Enable playback 48000 and 96000 rates. (Rates other that these do not work, even with "plug:front".)
51  *  0.0.11
52  *    Add Model name recognition.
53  *  0.0.12
54  *    Correct interrupt timing. interrupt at end of period, instead of in the middle of a playback period.
55  *    Remove redundent "voice" handling.
56  *  0.0.13
57  *    Single trigger call for multi channels.
58  *  0.0.14
59  *    Set limits based on what the sound card hardware can do.
60  *    playback periods_min=2, periods_max=8
61  *    capture hw constraints require period_size = n * 64 bytes.
62  *    playback hw constraints require period_size = n * 64 bytes.
63  *  0.0.15
64  *    Minor updates.
65  *  0.0.16
66  *    Implement 192000 sample rate.
67  *  0.0.17
68  *    Add support for SB0410 and SB0413.
69  *  0.0.18
70  *    Modified Copyright message.
71  *  0.0.19
72  *    Finally fix support for SB Live 24 bit. SB0410 and SB0413.
73  *    The output codec needs resetting, otherwise all output is muted.
74  *  0.0.20
75  *    Merge "pci_disable_device(pci);" fixes.
76  *  0.0.21
77  *    Add 4 capture channels. (SPDIF only comes in on channel 0. )
78  *    Add SPDIF capture using optional digital I/O module for SB Live 24bit. (Analog capture does not yet work.)
79  *  0.0.22
80  *    Add support for MSI K8N Diamond Motherboard with onboard SB Live 24bit without AC97. From kiksen, bug #901
81  *  0.0.23
82  *    Implement support for Line-in capture on SB Live 24bit.
83  *  0.0.24
84  *    Add support for mute control on SB Live 24bit (cards w/ SPI DAC)
85  *  0.0.25
86  *    Powerdown SPI DAC channels when not in use
87  *
88  *  BUGS:
89  *    Some stability problems when unloading the snd-ca0106 kernel module.
90  *    --
91  *
92  *  TODO:
93  *    4 Capture channels, only one implemented so far.
94  *    Other capture rates apart from 48khz not implemented.
95  *    MIDI
96  *    --
97  *  GENERAL INFO:
98  *    Model: SB0310
99  *    P17 Chip: CA0106-DAT
100  *    AC97 Codec: STAC 9721
101  *    ADC: Philips 1361T (Stereo 24bit)
102  *    DAC: WM8746EDS (6-channel, 24bit, 192Khz)
103  *
104  *  GENERAL INFO:
105  *    Model: SB0410
106  *    P17 Chip: CA0106-DAT
107  *    AC97 Codec: None
108  *    ADC: WM8775EDS (4 Channel)
109  *    DAC: CS4382 (114 dB, 24-Bit, 192 kHz, 8-Channel D/A Converter with DSD Support)
110  *    SPDIF Out control switches between Mic in and SPDIF out.
111  *    No sound out or mic input working yet.
112  *
113  *  GENERAL INFO:
114  *    Model: SB0413
115  *    P17 Chip: CA0106-DAT
116  *    AC97 Codec: None.
117  *    ADC: Unknown
118  *    DAC: Unknown
119  *    Trying to handle it like the SB0410.
120  *
121  *  This code was initially based on code from ALSA's emu10k1x.c which is:
122  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
123  */
124 #include <linux/delay.h>
125 #include <linux/init.h>
126 #include <linux/interrupt.h>
127 #include <linux/pci.h>
128 #include <linux/slab.h>
129 #include <linux/module.h>
130 #include <linux/dma-mapping.h>
131 #include <sound/core.h>
132 #include <sound/initval.h>
133 #include <sound/pcm.h>
134 #include <sound/ac97_codec.h>
135 #include <sound/info.h>
136 
137 MODULE_AUTHOR("James Courtier-Dutton <James@superbug.demon.co.uk>");
138 MODULE_DESCRIPTION("CA0106");
139 MODULE_LICENSE("GPL");
140 MODULE_SUPPORTED_DEVICE("{{Creative,SB CA0106 chip}}");
141 
142 // module parameters (see "Module Parameters")
143 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
144 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
145 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
146 static uint subsystem[SNDRV_CARDS]; /* Force card subsystem model */
147 
148 module_param_array(index, int, NULL, 0444);
149 MODULE_PARM_DESC(index, "Index value for the CA0106 soundcard.");
150 module_param_array(id, charp, NULL, 0444);
151 MODULE_PARM_DESC(id, "ID string for the CA0106 soundcard.");
152 module_param_array(enable, bool, NULL, 0444);
153 MODULE_PARM_DESC(enable, "Enable the CA0106 soundcard.");
154 module_param_array(subsystem, uint, NULL, 0444);
155 MODULE_PARM_DESC(subsystem, "Force card subsystem model.");
156 
157 #include "ca0106.h"
158 
159 static const struct snd_ca0106_details ca0106_chip_details[] = {
160 	 /* Sound Blaster X-Fi Extreme Audio. This does not have an AC97. 53SB079000000 */
161 	 /* It is really just a normal SB Live 24bit. */
162 	 /* Tested:
163 	  * See ALSA bug#3251
164 	  */
165 	 { .serial = 0x10131102,
166 	   .name   = "X-Fi Extreme Audio [SBxxxx]",
167 	   .gpio_type = 1,
168 	   .i2c_adc = 1 } ,
169 	 /* Sound Blaster X-Fi Extreme Audio. This does not have an AC97. 53SB079000000 */
170 	 /* It is really just a normal SB Live 24bit. */
171 	 /*
172  	  * CTRL:CA0111-WTLF
173 	  * ADC: WM8775SEDS
174 	  * DAC: CS4382-KQZ
175 	  */
176 	 /* Tested:
177 	  * Playback on front, rear, center/lfe speakers
178 	  * Capture from Mic in.
179 	  * Not-Tested:
180 	  * Capture from Line in.
181 	  * Playback to digital out.
182 	  */
183 	 { .serial = 0x10121102,
184 	   .name   = "X-Fi Extreme Audio [SB0790]",
185 	   .gpio_type = 1,
186 	   .i2c_adc = 1 } ,
187 	 /* New Dell Sound Blaster Live! 7.1 24bit. This does not have an AC97.  */
188 	 /* AudigyLS[SB0310] */
189 	 { .serial = 0x10021102,
190 	   .name   = "AudigyLS [SB0310]",
191 	   .ac97   = 1 } ,
192 	 /* Unknown AudigyLS that also says SB0310 on it */
193 	 { .serial = 0x10051102,
194 	   .name   = "AudigyLS [SB0310b]",
195 	   .ac97   = 1 } ,
196 	 /* New Sound Blaster Live! 7.1 24bit. This does not have an AC97. 53SB041000001 */
197 	 { .serial = 0x10061102,
198 	   .name   = "Live! 7.1 24bit [SB0410]",
199 	   .gpio_type = 1,
200 	   .i2c_adc = 1 } ,
201 	 /* New Dell Sound Blaster Live! 7.1 24bit. This does not have an AC97.  */
202 	 { .serial = 0x10071102,
203 	   .name   = "Live! 7.1 24bit [SB0413]",
204 	   .gpio_type = 1,
205 	   .i2c_adc = 1 } ,
206 	 /* New Audigy SE. Has a different DAC. */
207 	 /* SB0570:
208 	  * CTRL:CA0106-DAT
209 	  * ADC: WM8775EDS
210 	  * DAC: WM8768GEDS
211 	  */
212 	 { .serial = 0x100a1102,
213 	   .name   = "Audigy SE [SB0570]",
214 	   .gpio_type = 1,
215 	   .i2c_adc = 1,
216 	   .spi_dac = 0x4021 } ,
217 	 /* New Audigy LS. Has a different DAC. */
218 	 /* SB0570:
219 	  * CTRL:CA0106-DAT
220 	  * ADC: WM8775EDS
221 	  * DAC: WM8768GEDS
222 	  */
223 	 { .serial = 0x10111102,
224 	   .name   = "Audigy SE OEM [SB0570a]",
225 	   .gpio_type = 1,
226 	   .i2c_adc = 1,
227 	   .spi_dac = 0x4021 } ,
228 	/* Sound Blaster 5.1vx
229 	 * Tested: Playback on front, rear, center/lfe speakers
230 	 * Not-Tested: Capture
231 	 */
232 	{ .serial = 0x10041102,
233 	  .name   = "Sound Blaster 5.1vx [SB1070]",
234 	  .gpio_type = 1,
235 	  .i2c_adc = 0,
236 	  .spi_dac = 0x0124
237 	 } ,
238 	 /* MSI K8N Diamond Motherboard with onboard SB Live 24bit without AC97 */
239 	 /* SB0438
240 	  * CTRL:CA0106-DAT
241 	  * ADC: WM8775SEDS
242 	  * DAC: CS4382-KQZ
243 	  */
244 	 { .serial = 0x10091462,
245 	   .name   = "MSI K8N Diamond MB [SB0438]",
246 	   .gpio_type = 2,
247 	   .i2c_adc = 1 } ,
248 	 /* MSI K8N Diamond PLUS MB */
249 	 { .serial = 0x10091102,
250 	   .name   = "MSI K8N Diamond MB",
251 	   .gpio_type = 2,
252 	   .i2c_adc = 1,
253 	   .spi_dac = 0x4021 } ,
254 	/* Giga-byte GA-G1975X mobo
255 	 * Novell bnc#395807
256 	 */
257 	/* FIXME: the GPIO and I2C setting aren't tested well */
258 	{ .serial = 0x1458a006,
259 	  .name = "Giga-byte GA-G1975X",
260 	  .gpio_type = 1,
261 	  .i2c_adc = 1 },
262 	 /* Shuttle XPC SD31P which has an onboard Creative Labs
263 	  * Sound Blaster Live! 24-bit EAX
264 	  * high-definition 7.1 audio processor".
265 	  * Added using info from andrewvegan in alsa bug #1298
266 	  */
267 	 { .serial = 0x30381297,
268 	   .name   = "Shuttle XPC SD31P [SD31P]",
269 	   .gpio_type = 1,
270 	   .i2c_adc = 1 } ,
271 	/* Shuttle XPC SD11G5 which has an onboard Creative Labs
272 	 * Sound Blaster Live! 24-bit EAX
273 	 * high-definition 7.1 audio processor".
274 	 * Fixes ALSA bug#1600
275          */
276 	{ .serial = 0x30411297,
277 	  .name = "Shuttle XPC SD11G5 [SD11G5]",
278 	  .gpio_type = 1,
279 	  .i2c_adc = 1 } ,
280 	 { .serial = 0,
281 	   .name   = "AudigyLS [Unknown]" }
282 };
283 
284 /* hardware definition */
285 static const struct snd_pcm_hardware snd_ca0106_playback_hw = {
286 	.info =			SNDRV_PCM_INFO_MMAP |
287 				SNDRV_PCM_INFO_INTERLEAVED |
288 				SNDRV_PCM_INFO_BLOCK_TRANSFER |
289 				SNDRV_PCM_INFO_MMAP_VALID |
290 				SNDRV_PCM_INFO_SYNC_START,
291 	.formats =		SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
292 	.rates =		(SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |
293 				 SNDRV_PCM_RATE_192000),
294 	.rate_min =		48000,
295 	.rate_max =		192000,
296 	.channels_min =		2,  //1,
297 	.channels_max =		2,  //6,
298 	.buffer_bytes_max =	((65536 - 64) * 8),
299 	.period_bytes_min =	64,
300 	.period_bytes_max =	(65536 - 64),
301 	.periods_min =		2,
302 	.periods_max =		8,
303 	.fifo_size =		0,
304 };
305 
306 static const struct snd_pcm_hardware snd_ca0106_capture_hw = {
307 	.info =			(SNDRV_PCM_INFO_MMAP |
308 				 SNDRV_PCM_INFO_INTERLEAVED |
309 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
310 				 SNDRV_PCM_INFO_MMAP_VALID),
311 	.formats =		SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
312 #if 0 /* FIXME: looks like 44.1kHz capture causes noisy output on 48kHz */
313 	.rates =		(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
314 				 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),
315 	.rate_min =		44100,
316 #else
317 	.rates =		(SNDRV_PCM_RATE_48000 |
318 				 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),
319 	.rate_min =		48000,
320 #endif /* FIXME */
321 	.rate_max =		192000,
322 	.channels_min =		2,
323 	.channels_max =		2,
324 	.buffer_bytes_max =	65536 - 128,
325 	.period_bytes_min =	64,
326 	.period_bytes_max =	32768 - 64,
327 	.periods_min =		2,
328 	.periods_max =		2,
329 	.fifo_size =		0,
330 };
331 
332 unsigned int snd_ca0106_ptr_read(struct snd_ca0106 * emu,
333 					  unsigned int reg,
334 					  unsigned int chn)
335 {
336 	unsigned long flags;
337 	unsigned int regptr, val;
338 
339 	regptr = (reg << 16) | chn;
340 
341 	spin_lock_irqsave(&emu->emu_lock, flags);
342 	outl(regptr, emu->port + PTR);
343 	val = inl(emu->port + DATA);
344 	spin_unlock_irqrestore(&emu->emu_lock, flags);
345 	return val;
346 }
347 
348 void snd_ca0106_ptr_write(struct snd_ca0106 *emu,
349 				   unsigned int reg,
350 				   unsigned int chn,
351 				   unsigned int data)
352 {
353 	unsigned int regptr;
354 	unsigned long flags;
355 
356 	regptr = (reg << 16) | chn;
357 
358 	spin_lock_irqsave(&emu->emu_lock, flags);
359 	outl(regptr, emu->port + PTR);
360 	outl(data, emu->port + DATA);
361 	spin_unlock_irqrestore(&emu->emu_lock, flags);
362 }
363 
364 int snd_ca0106_spi_write(struct snd_ca0106 * emu,
365 				   unsigned int data)
366 {
367 	unsigned int reset, set;
368 	unsigned int reg, tmp;
369 	int n, result;
370 	reg = SPI;
371 	if (data > 0xffff) /* Only 16bit values allowed */
372 		return 1;
373 	tmp = snd_ca0106_ptr_read(emu, reg, 0);
374 	reset = (tmp & ~0x3ffff) | 0x20000; /* Set xxx20000 */
375 	set = reset | 0x10000; /* Set xxx1xxxx */
376 	snd_ca0106_ptr_write(emu, reg, 0, reset | data);
377 	tmp = snd_ca0106_ptr_read(emu, reg, 0); /* write post */
378 	snd_ca0106_ptr_write(emu, reg, 0, set | data);
379 	result = 1;
380 	/* Wait for status bit to return to 0 */
381 	for (n = 0; n < 100; n++) {
382 		udelay(10);
383 		tmp = snd_ca0106_ptr_read(emu, reg, 0);
384 		if (!(tmp & 0x10000)) {
385 			result = 0;
386 			break;
387 		}
388 	}
389 	if (result) /* Timed out */
390 		return 1;
391 	snd_ca0106_ptr_write(emu, reg, 0, reset | data);
392 	tmp = snd_ca0106_ptr_read(emu, reg, 0); /* Write post */
393 	return 0;
394 }
395 
396 /* The ADC does not support i2c read, so only write is implemented */
397 int snd_ca0106_i2c_write(struct snd_ca0106 *emu,
398 				u32 reg,
399 				u32 value)
400 {
401 	u32 tmp;
402 	int timeout = 0;
403 	int status;
404 	int retry;
405 	if ((reg > 0x7f) || (value > 0x1ff)) {
406 		dev_err(emu->card->dev, "i2c_write: invalid values.\n");
407 		return -EINVAL;
408 	}
409 
410 	tmp = reg << 25 | value << 16;
411 	/*
412 	dev_dbg(emu->card->dev, "I2C-write:reg=0x%x, value=0x%x\n", reg, value);
413 	*/
414 	/* Not sure what this I2C channel controls. */
415 	/* snd_ca0106_ptr_write(emu, I2C_D0, 0, tmp); */
416 
417 	/* This controls the I2C connected to the WM8775 ADC Codec */
418 	snd_ca0106_ptr_write(emu, I2C_D1, 0, tmp);
419 
420 	for (retry = 0; retry < 10; retry++) {
421 		/* Send the data to i2c */
422 		//tmp = snd_ca0106_ptr_read(emu, I2C_A, 0);
423 		//tmp = tmp & ~(I2C_A_ADC_READ|I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD_MASK);
424 		tmp = 0;
425 		tmp = tmp | (I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD);
426 		snd_ca0106_ptr_write(emu, I2C_A, 0, tmp);
427 
428 		/* Wait till the transaction ends */
429 		while (1) {
430 			status = snd_ca0106_ptr_read(emu, I2C_A, 0);
431 			/*dev_dbg(emu->card->dev, "I2C:status=0x%x\n", status);*/
432 			timeout++;
433 			if ((status & I2C_A_ADC_START) == 0)
434 				break;
435 
436 			if (timeout > 1000)
437 				break;
438 		}
439 		//Read back and see if the transaction is successful
440 		if ((status & I2C_A_ADC_ABORT) == 0)
441 			break;
442 	}
443 
444 	if (retry == 10) {
445 		dev_err(emu->card->dev, "Writing to ADC failed!\n");
446 		return -EINVAL;
447 	}
448 
449     	return 0;
450 }
451 
452 
453 static void snd_ca0106_intr_enable(struct snd_ca0106 *emu, unsigned int intrenb)
454 {
455 	unsigned long flags;
456 	unsigned int intr_enable;
457 
458 	spin_lock_irqsave(&emu->emu_lock, flags);
459 	intr_enable = inl(emu->port + INTE) | intrenb;
460 	outl(intr_enable, emu->port + INTE);
461 	spin_unlock_irqrestore(&emu->emu_lock, flags);
462 }
463 
464 static void snd_ca0106_intr_disable(struct snd_ca0106 *emu, unsigned int intrenb)
465 {
466 	unsigned long flags;
467 	unsigned int intr_enable;
468 
469 	spin_lock_irqsave(&emu->emu_lock, flags);
470 	intr_enable = inl(emu->port + INTE) & ~intrenb;
471 	outl(intr_enable, emu->port + INTE);
472 	spin_unlock_irqrestore(&emu->emu_lock, flags);
473 }
474 
475 
476 static void snd_ca0106_pcm_free_substream(struct snd_pcm_runtime *runtime)
477 {
478 	kfree(runtime->private_data);
479 }
480 
481 static const int spi_dacd_reg[] = {
482 	SPI_DACD0_REG,
483 	SPI_DACD1_REG,
484 	SPI_DACD2_REG,
485 	0,
486 	SPI_DACD4_REG,
487 };
488 static const int spi_dacd_bit[] = {
489 	SPI_DACD0_BIT,
490 	SPI_DACD1_BIT,
491 	SPI_DACD2_BIT,
492 	0,
493 	SPI_DACD4_BIT,
494 };
495 
496 static void restore_spdif_bits(struct snd_ca0106 *chip, int idx)
497 {
498 	if (chip->spdif_str_bits[idx] != chip->spdif_bits[idx]) {
499 		chip->spdif_str_bits[idx] = chip->spdif_bits[idx];
500 		snd_ca0106_ptr_write(chip, SPCS0 + idx, 0,
501 				     chip->spdif_str_bits[idx]);
502 	}
503 }
504 
505 static int snd_ca0106_channel_dac(struct snd_ca0106 *chip,
506 				  const struct snd_ca0106_details *details,
507 				  int channel_id)
508 {
509 	switch (channel_id) {
510 	case PCM_FRONT_CHANNEL:
511 		return (details->spi_dac & 0xf000) >> (4 * 3);
512 	case PCM_REAR_CHANNEL:
513 		return (details->spi_dac & 0x0f00) >> (4 * 2);
514 	case PCM_CENTER_LFE_CHANNEL:
515 		return (details->spi_dac & 0x00f0) >> (4 * 1);
516 	case PCM_UNKNOWN_CHANNEL:
517 		return (details->spi_dac & 0x000f) >> (4 * 0);
518 	default:
519 		dev_dbg(chip->card->dev, "ca0106: unknown channel_id %d\n",
520 			   channel_id);
521 	}
522 	return 0;
523 }
524 
525 static int snd_ca0106_pcm_power_dac(struct snd_ca0106 *chip, int channel_id,
526 				    int power)
527 {
528 	if (chip->details->spi_dac) {
529 		const int dac = snd_ca0106_channel_dac(chip, chip->details,
530 						       channel_id);
531 		const int reg = spi_dacd_reg[dac];
532 		const int bit = spi_dacd_bit[dac];
533 
534 		if (power)
535 			/* Power up */
536 			chip->spi_dac_reg[reg] &= ~bit;
537 		else
538 			/* Power down */
539 			chip->spi_dac_reg[reg] |= bit;
540 		return snd_ca0106_spi_write(chip, chip->spi_dac_reg[reg]);
541 	}
542 	return 0;
543 }
544 
545 /* open_playback callback */
546 static int snd_ca0106_pcm_open_playback_channel(struct snd_pcm_substream *substream,
547 						int channel_id)
548 {
549 	struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
550         struct snd_ca0106_channel *channel = &(chip->playback_channels[channel_id]);
551 	struct snd_ca0106_pcm *epcm;
552 	struct snd_pcm_runtime *runtime = substream->runtime;
553 	int err;
554 
555 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
556 
557 	if (epcm == NULL)
558 		return -ENOMEM;
559 	epcm->emu = chip;
560 	epcm->substream = substream;
561         epcm->channel_id=channel_id;
562 
563 	runtime->private_data = epcm;
564 	runtime->private_free = snd_ca0106_pcm_free_substream;
565 
566 	runtime->hw = snd_ca0106_playback_hw;
567 
568         channel->emu = chip;
569         channel->number = channel_id;
570 
571 	channel->use = 1;
572 	/*
573 	dev_dbg(chip->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
574 	       channel_id, chip, channel);
575 	*/
576         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
577 	channel->epcm = epcm;
578 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
579                 return err;
580 	if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
581                 return err;
582 	snd_pcm_set_sync(substream);
583 
584 	/* Front channel dac should already be on */
585 	if (channel_id != PCM_FRONT_CHANNEL) {
586 		err = snd_ca0106_pcm_power_dac(chip, channel_id, 1);
587 		if (err < 0)
588 			return err;
589 	}
590 
591 	restore_spdif_bits(chip, channel_id);
592 
593 	return 0;
594 }
595 
596 /* close callback */
597 static int snd_ca0106_pcm_close_playback(struct snd_pcm_substream *substream)
598 {
599 	struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
600 	struct snd_pcm_runtime *runtime = substream->runtime;
601         struct snd_ca0106_pcm *epcm = runtime->private_data;
602 	chip->playback_channels[epcm->channel_id].use = 0;
603 
604 	restore_spdif_bits(chip, epcm->channel_id);
605 
606 	/* Front channel dac should stay on */
607 	if (epcm->channel_id != PCM_FRONT_CHANNEL) {
608 		int err;
609 		err = snd_ca0106_pcm_power_dac(chip, epcm->channel_id, 0);
610 		if (err < 0)
611 			return err;
612 	}
613 
614 	/* FIXME: maybe zero others */
615 	return 0;
616 }
617 
618 static int snd_ca0106_pcm_open_playback_front(struct snd_pcm_substream *substream)
619 {
620 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
621 }
622 
623 static int snd_ca0106_pcm_open_playback_center_lfe(struct snd_pcm_substream *substream)
624 {
625 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_CENTER_LFE_CHANNEL);
626 }
627 
628 static int snd_ca0106_pcm_open_playback_unknown(struct snd_pcm_substream *substream)
629 {
630 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_UNKNOWN_CHANNEL);
631 }
632 
633 static int snd_ca0106_pcm_open_playback_rear(struct snd_pcm_substream *substream)
634 {
635 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_REAR_CHANNEL);
636 }
637 
638 /* open_capture callback */
639 static int snd_ca0106_pcm_open_capture_channel(struct snd_pcm_substream *substream,
640 					       int channel_id)
641 {
642 	struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
643         struct snd_ca0106_channel *channel = &(chip->capture_channels[channel_id]);
644 	struct snd_ca0106_pcm *epcm;
645 	struct snd_pcm_runtime *runtime = substream->runtime;
646 	int err;
647 
648 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
649 	if (!epcm)
650 		return -ENOMEM;
651 
652 	epcm->emu = chip;
653 	epcm->substream = substream;
654         epcm->channel_id=channel_id;
655 
656 	runtime->private_data = epcm;
657 	runtime->private_free = snd_ca0106_pcm_free_substream;
658 
659 	runtime->hw = snd_ca0106_capture_hw;
660 
661         channel->emu = chip;
662         channel->number = channel_id;
663 
664 	channel->use = 1;
665 	/*
666 	dev_dbg(chip->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
667 	       channel_id, chip, channel);
668 	*/
669         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
670         channel->epcm = epcm;
671 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
672                 return err;
673 	//snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_capture_period_sizes);
674 	if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
675                 return err;
676 	return 0;
677 }
678 
679 /* close callback */
680 static int snd_ca0106_pcm_close_capture(struct snd_pcm_substream *substream)
681 {
682 	struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
683 	struct snd_pcm_runtime *runtime = substream->runtime;
684         struct snd_ca0106_pcm *epcm = runtime->private_data;
685 	chip->capture_channels[epcm->channel_id].use = 0;
686 	/* FIXME: maybe zero others */
687 	return 0;
688 }
689 
690 static int snd_ca0106_pcm_open_0_capture(struct snd_pcm_substream *substream)
691 {
692 	return snd_ca0106_pcm_open_capture_channel(substream, 0);
693 }
694 
695 static int snd_ca0106_pcm_open_1_capture(struct snd_pcm_substream *substream)
696 {
697 	return snd_ca0106_pcm_open_capture_channel(substream, 1);
698 }
699 
700 static int snd_ca0106_pcm_open_2_capture(struct snd_pcm_substream *substream)
701 {
702 	return snd_ca0106_pcm_open_capture_channel(substream, 2);
703 }
704 
705 static int snd_ca0106_pcm_open_3_capture(struct snd_pcm_substream *substream)
706 {
707 	return snd_ca0106_pcm_open_capture_channel(substream, 3);
708 }
709 
710 /* prepare playback callback */
711 static int snd_ca0106_pcm_prepare_playback(struct snd_pcm_substream *substream)
712 {
713 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
714 	struct snd_pcm_runtime *runtime = substream->runtime;
715 	struct snd_ca0106_pcm *epcm = runtime->private_data;
716 	int channel = epcm->channel_id;
717 	u32 *table_base = (u32 *)(emu->buffer.area+(8*16*channel));
718 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
719 	u32 hcfg_mask = HCFG_PLAYBACK_S32_LE;
720 	u32 hcfg_set = 0x00000000;
721 	u32 hcfg;
722 	u32 reg40_mask = 0x30000 << (channel<<1);
723 	u32 reg40_set = 0;
724 	u32 reg40;
725 	/* FIXME: Depending on mixer selection of SPDIF out or not, select the spdif rate or the DAC rate. */
726 	u32 reg71_mask = 0x03030000 ; /* Global. Set SPDIF rate. We only support 44100 to spdif, not to DAC. */
727 	u32 reg71_set = 0;
728 	u32 reg71;
729 	int i;
730 
731 #if 0 /* debug */
732 	dev_dbg(emu->card->dev,
733 		   "prepare:channel_number=%d, rate=%d, format=0x%x, "
734 		   "channels=%d, buffer_size=%ld, period_size=%ld, "
735 		   "periods=%u, frames_to_bytes=%d\n",
736 		   channel, runtime->rate, runtime->format,
737 		   runtime->channels, runtime->buffer_size,
738 		   runtime->period_size, runtime->periods,
739 		   frames_to_bytes(runtime, 1));
740 	dev_dbg(emu->card->dev,
741 		"dma_addr=%x, dma_area=%p, table_base=%p\n",
742 		   runtime->dma_addr, runtime->dma_area, table_base);
743 	dev_dbg(emu->card->dev,
744 		"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
745 		   emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
746 #endif /* debug */
747 	/* Rate can be set per channel. */
748 	/* reg40 control host to fifo */
749 	/* reg71 controls DAC rate. */
750 	switch (runtime->rate) {
751 	case 44100:
752 		reg40_set = 0x10000 << (channel<<1);
753 		reg71_set = 0x01010000;
754 		break;
755         case 48000:
756 		reg40_set = 0;
757 		reg71_set = 0;
758 		break;
759 	case 96000:
760 		reg40_set = 0x20000 << (channel<<1);
761 		reg71_set = 0x02020000;
762 		break;
763 	case 192000:
764 		reg40_set = 0x30000 << (channel<<1);
765 		reg71_set = 0x03030000;
766 		break;
767 	default:
768 		reg40_set = 0;
769 		reg71_set = 0;
770 		break;
771 	}
772 	/* Format is a global setting */
773 	/* FIXME: Only let the first channel accessed set this. */
774 	switch (runtime->format) {
775 	case SNDRV_PCM_FORMAT_S16_LE:
776 		hcfg_set = 0;
777 		break;
778 	case SNDRV_PCM_FORMAT_S32_LE:
779 		hcfg_set = HCFG_PLAYBACK_S32_LE;
780 		break;
781 	default:
782 		hcfg_set = 0;
783 		break;
784 	}
785 	hcfg = inl(emu->port + HCFG) ;
786 	hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
787 	outl(hcfg, emu->port + HCFG);
788 	reg40 = snd_ca0106_ptr_read(emu, 0x40, 0);
789 	reg40 = (reg40 & ~reg40_mask) | reg40_set;
790 	snd_ca0106_ptr_write(emu, 0x40, 0, reg40);
791 	reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
792 	reg71 = (reg71 & ~reg71_mask) | reg71_set;
793 	snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
794 
795 	/* FIXME: Check emu->buffer.size before actually writing to it. */
796         for(i=0; i < runtime->periods; i++) {
797 		table_base[i*2] = runtime->dma_addr + (i * period_size_bytes);
798 		table_base[i*2+1] = period_size_bytes << 16;
799 	}
800 
801 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_ADDR, channel, emu->buffer.addr+(8*16*channel));
802 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
803 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_PTR, channel, 0);
804 	snd_ca0106_ptr_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
805 	snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
806 	/* FIXME  test what 0 bytes does. */
807 	snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
808 	snd_ca0106_ptr_write(emu, PLAYBACK_POINTER, channel, 0);
809 	snd_ca0106_ptr_write(emu, 0x07, channel, 0x0);
810 	snd_ca0106_ptr_write(emu, 0x08, channel, 0);
811         snd_ca0106_ptr_write(emu, PLAYBACK_MUTE, 0x0, 0x0); /* Unmute output */
812 #if 0
813 	snd_ca0106_ptr_write(emu, SPCS0, 0,
814 			       SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
815 			       SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
816 			       SPCS_GENERATIONSTATUS | 0x00001200 |
817 			       0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT );
818 #endif
819 
820 	return 0;
821 }
822 
823 /* prepare capture callback */
824 static int snd_ca0106_pcm_prepare_capture(struct snd_pcm_substream *substream)
825 {
826 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
827 	struct snd_pcm_runtime *runtime = substream->runtime;
828 	struct snd_ca0106_pcm *epcm = runtime->private_data;
829 	int channel = epcm->channel_id;
830 	u32 hcfg_mask = HCFG_CAPTURE_S32_LE;
831 	u32 hcfg_set = 0x00000000;
832 	u32 hcfg;
833 	u32 over_sampling=0x2;
834 	u32 reg71_mask = 0x0000c000 ; /* Global. Set ADC rate. */
835 	u32 reg71_set = 0;
836 	u32 reg71;
837 
838 #if 0 /* debug */
839 	dev_dbg(emu->card->dev,
840 		   "prepare:channel_number=%d, rate=%d, format=0x%x, "
841 		   "channels=%d, buffer_size=%ld, period_size=%ld, "
842 		   "periods=%u, frames_to_bytes=%d\n",
843 		   channel, runtime->rate, runtime->format,
844 		   runtime->channels, runtime->buffer_size,
845 		   runtime->period_size, runtime->periods,
846 		   frames_to_bytes(runtime, 1));
847 	dev_dbg(emu->card->dev,
848 		"dma_addr=%x, dma_area=%p, table_base=%p\n",
849 		   runtime->dma_addr, runtime->dma_area, table_base);
850 	dev_dbg(emu->card->dev,
851 		"dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
852 		   emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
853 #endif /* debug */
854 	/* reg71 controls ADC rate. */
855 	switch (runtime->rate) {
856 	case 44100:
857 		reg71_set = 0x00004000;
858 		break;
859         case 48000:
860 		reg71_set = 0;
861 		break;
862 	case 96000:
863 		reg71_set = 0x00008000;
864 		over_sampling=0xa;
865 		break;
866 	case 192000:
867 		reg71_set = 0x0000c000;
868 		over_sampling=0xa;
869 		break;
870 	default:
871 		reg71_set = 0;
872 		break;
873 	}
874 	/* Format is a global setting */
875 	/* FIXME: Only let the first channel accessed set this. */
876 	switch (runtime->format) {
877 	case SNDRV_PCM_FORMAT_S16_LE:
878 		hcfg_set = 0;
879 		break;
880 	case SNDRV_PCM_FORMAT_S32_LE:
881 		hcfg_set = HCFG_CAPTURE_S32_LE;
882 		break;
883 	default:
884 		hcfg_set = 0;
885 		break;
886 	}
887 	hcfg = inl(emu->port + HCFG) ;
888 	hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
889 	outl(hcfg, emu->port + HCFG);
890 	reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
891 	reg71 = (reg71 & ~reg71_mask) | reg71_set;
892 	snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
893         if (emu->details->i2c_adc == 1) { /* The SB0410 and SB0413 use I2C to control ADC. */
894 	        snd_ca0106_i2c_write(emu, ADC_MASTER, over_sampling); /* Adjust the over sampler to better suit the capture rate. */
895 	}
896 
897 
898 	/*
899 	dev_dbg(emu->card->dev,
900 	       "prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, "
901 	       "buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",
902 	       channel, runtime->rate, runtime->format, runtime->channels,
903 	       runtime->buffer_size, runtime->period_size,
904 	       frames_to_bytes(runtime, 1));
905 	*/
906 	snd_ca0106_ptr_write(emu, 0x13, channel, 0);
907 	snd_ca0106_ptr_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
908 	snd_ca0106_ptr_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
909 	snd_ca0106_ptr_write(emu, CAPTURE_POINTER, channel, 0);
910 
911 	return 0;
912 }
913 
914 /* trigger_playback callback */
915 static int snd_ca0106_pcm_trigger_playback(struct snd_pcm_substream *substream,
916 				    int cmd)
917 {
918 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
919 	struct snd_pcm_runtime *runtime;
920 	struct snd_ca0106_pcm *epcm;
921 	int channel;
922 	int result = 0;
923         struct snd_pcm_substream *s;
924 	u32 basic = 0;
925 	u32 extended = 0;
926 	u32 bits;
927 	int running = 0;
928 
929 	switch (cmd) {
930 	case SNDRV_PCM_TRIGGER_START:
931 	case SNDRV_PCM_TRIGGER_RESUME:
932 		running = 1;
933 		break;
934 	case SNDRV_PCM_TRIGGER_STOP:
935 	case SNDRV_PCM_TRIGGER_SUSPEND:
936 	default:
937 		running = 0;
938 		break;
939 	}
940         snd_pcm_group_for_each_entry(s, substream) {
941 		if (snd_pcm_substream_chip(s) != emu ||
942 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
943 			continue;
944 		runtime = s->runtime;
945 		epcm = runtime->private_data;
946 		channel = epcm->channel_id;
947 		/* dev_dbg(emu->card->dev, "channel=%d\n", channel); */
948 		epcm->running = running;
949 		basic |= (0x1 << channel);
950 		extended |= (0x10 << channel);
951                 snd_pcm_trigger_done(s, substream);
952         }
953 	/* dev_dbg(emu->card->dev, "basic=0x%x, extended=0x%x\n",basic, extended); */
954 
955 	switch (cmd) {
956 	case SNDRV_PCM_TRIGGER_START:
957 	case SNDRV_PCM_TRIGGER_RESUME:
958 		bits = snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0);
959 		bits |= extended;
960 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, bits);
961 		bits = snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0);
962 		bits |= basic;
963 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, bits);
964 		break;
965 	case SNDRV_PCM_TRIGGER_STOP:
966 	case SNDRV_PCM_TRIGGER_SUSPEND:
967 		bits = snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0);
968 		bits &= ~basic;
969 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, bits);
970 		bits = snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0);
971 		bits &= ~extended;
972 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, bits);
973 		break;
974 	default:
975 		result = -EINVAL;
976 		break;
977 	}
978 	return result;
979 }
980 
981 /* trigger_capture callback */
982 static int snd_ca0106_pcm_trigger_capture(struct snd_pcm_substream *substream,
983 				    int cmd)
984 {
985 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
986 	struct snd_pcm_runtime *runtime = substream->runtime;
987 	struct snd_ca0106_pcm *epcm = runtime->private_data;
988 	int channel = epcm->channel_id;
989 	int result = 0;
990 
991 	switch (cmd) {
992 	case SNDRV_PCM_TRIGGER_START:
993 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
994 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
995 		epcm->running = 1;
996 		break;
997 	case SNDRV_PCM_TRIGGER_STOP:
998 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
999 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
1000 		epcm->running = 0;
1001 		break;
1002 	default:
1003 		result = -EINVAL;
1004 		break;
1005 	}
1006 	return result;
1007 }
1008 
1009 /* pointer_playback callback */
1010 static snd_pcm_uframes_t
1011 snd_ca0106_pcm_pointer_playback(struct snd_pcm_substream *substream)
1012 {
1013 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1014 	struct snd_pcm_runtime *runtime = substream->runtime;
1015 	struct snd_ca0106_pcm *epcm = runtime->private_data;
1016 	unsigned int ptr, prev_ptr;
1017 	int channel = epcm->channel_id;
1018 	int timeout = 10;
1019 
1020 	if (!epcm->running)
1021 		return 0;
1022 
1023 	prev_ptr = -1;
1024 	do {
1025 		ptr = snd_ca0106_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
1026 		ptr = (ptr >> 3) * runtime->period_size;
1027 		ptr += bytes_to_frames(runtime,
1028 			snd_ca0106_ptr_read(emu, PLAYBACK_POINTER, channel));
1029 		if (ptr >= runtime->buffer_size)
1030 			ptr -= runtime->buffer_size;
1031 		if (prev_ptr == ptr)
1032 			return ptr;
1033 		prev_ptr = ptr;
1034 	} while (--timeout);
1035 	dev_warn(emu->card->dev, "ca0106: unstable DMA pointer!\n");
1036 	return 0;
1037 }
1038 
1039 /* pointer_capture callback */
1040 static snd_pcm_uframes_t
1041 snd_ca0106_pcm_pointer_capture(struct snd_pcm_substream *substream)
1042 {
1043 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1044 	struct snd_pcm_runtime *runtime = substream->runtime;
1045 	struct snd_ca0106_pcm *epcm = runtime->private_data;
1046 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
1047 	int channel = epcm->channel_id;
1048 
1049 	if (!epcm->running)
1050 		return 0;
1051 
1052 	ptr1 = snd_ca0106_ptr_read(emu, CAPTURE_POINTER, channel);
1053 	ptr2 = bytes_to_frames(runtime, ptr1);
1054 	ptr=ptr2;
1055         if (ptr >= runtime->buffer_size)
1056 		ptr -= runtime->buffer_size;
1057 	/*
1058 	dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
1059 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
1060 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
1061 	       (int)runtime->period_size, (int)runtime->frame_bits,
1062 	       (int)runtime->rate);
1063 	*/
1064 	return ptr;
1065 }
1066 
1067 /* operators */
1068 static const struct snd_pcm_ops snd_ca0106_playback_front_ops = {
1069 	.open =        snd_ca0106_pcm_open_playback_front,
1070 	.close =       snd_ca0106_pcm_close_playback,
1071 	.prepare =     snd_ca0106_pcm_prepare_playback,
1072 	.trigger =     snd_ca0106_pcm_trigger_playback,
1073 	.pointer =     snd_ca0106_pcm_pointer_playback,
1074 };
1075 
1076 static const struct snd_pcm_ops snd_ca0106_capture_0_ops = {
1077 	.open =        snd_ca0106_pcm_open_0_capture,
1078 	.close =       snd_ca0106_pcm_close_capture,
1079 	.prepare =     snd_ca0106_pcm_prepare_capture,
1080 	.trigger =     snd_ca0106_pcm_trigger_capture,
1081 	.pointer =     snd_ca0106_pcm_pointer_capture,
1082 };
1083 
1084 static const struct snd_pcm_ops snd_ca0106_capture_1_ops = {
1085 	.open =        snd_ca0106_pcm_open_1_capture,
1086 	.close =       snd_ca0106_pcm_close_capture,
1087 	.prepare =     snd_ca0106_pcm_prepare_capture,
1088 	.trigger =     snd_ca0106_pcm_trigger_capture,
1089 	.pointer =     snd_ca0106_pcm_pointer_capture,
1090 };
1091 
1092 static const struct snd_pcm_ops snd_ca0106_capture_2_ops = {
1093 	.open =        snd_ca0106_pcm_open_2_capture,
1094 	.close =       snd_ca0106_pcm_close_capture,
1095 	.prepare =     snd_ca0106_pcm_prepare_capture,
1096 	.trigger =     snd_ca0106_pcm_trigger_capture,
1097 	.pointer =     snd_ca0106_pcm_pointer_capture,
1098 };
1099 
1100 static const struct snd_pcm_ops snd_ca0106_capture_3_ops = {
1101 	.open =        snd_ca0106_pcm_open_3_capture,
1102 	.close =       snd_ca0106_pcm_close_capture,
1103 	.prepare =     snd_ca0106_pcm_prepare_capture,
1104 	.trigger =     snd_ca0106_pcm_trigger_capture,
1105 	.pointer =     snd_ca0106_pcm_pointer_capture,
1106 };
1107 
1108 static const struct snd_pcm_ops snd_ca0106_playback_center_lfe_ops = {
1109         .open =         snd_ca0106_pcm_open_playback_center_lfe,
1110         .close =        snd_ca0106_pcm_close_playback,
1111         .prepare =      snd_ca0106_pcm_prepare_playback,
1112         .trigger =      snd_ca0106_pcm_trigger_playback,
1113         .pointer =      snd_ca0106_pcm_pointer_playback,
1114 };
1115 
1116 static const struct snd_pcm_ops snd_ca0106_playback_unknown_ops = {
1117         .open =         snd_ca0106_pcm_open_playback_unknown,
1118         .close =        snd_ca0106_pcm_close_playback,
1119         .prepare =      snd_ca0106_pcm_prepare_playback,
1120         .trigger =      snd_ca0106_pcm_trigger_playback,
1121         .pointer =      snd_ca0106_pcm_pointer_playback,
1122 };
1123 
1124 static const struct snd_pcm_ops snd_ca0106_playback_rear_ops = {
1125         .open =         snd_ca0106_pcm_open_playback_rear,
1126         .close =        snd_ca0106_pcm_close_playback,
1127         .prepare =      snd_ca0106_pcm_prepare_playback,
1128         .trigger =      snd_ca0106_pcm_trigger_playback,
1129         .pointer =      snd_ca0106_pcm_pointer_playback,
1130 };
1131 
1132 
1133 static unsigned short snd_ca0106_ac97_read(struct snd_ac97 *ac97,
1134 					     unsigned short reg)
1135 {
1136 	struct snd_ca0106 *emu = ac97->private_data;
1137 	unsigned long flags;
1138 	unsigned short val;
1139 
1140 	spin_lock_irqsave(&emu->emu_lock, flags);
1141 	outb(reg, emu->port + AC97ADDRESS);
1142 	val = inw(emu->port + AC97DATA);
1143 	spin_unlock_irqrestore(&emu->emu_lock, flags);
1144 	return val;
1145 }
1146 
1147 static void snd_ca0106_ac97_write(struct snd_ac97 *ac97,
1148 				    unsigned short reg, unsigned short val)
1149 {
1150 	struct snd_ca0106 *emu = ac97->private_data;
1151 	unsigned long flags;
1152 
1153 	spin_lock_irqsave(&emu->emu_lock, flags);
1154 	outb(reg, emu->port + AC97ADDRESS);
1155 	outw(val, emu->port + AC97DATA);
1156 	spin_unlock_irqrestore(&emu->emu_lock, flags);
1157 }
1158 
1159 static int snd_ca0106_ac97(struct snd_ca0106 *chip)
1160 {
1161 	struct snd_ac97_bus *pbus;
1162 	struct snd_ac97_template ac97;
1163 	int err;
1164 	static const struct snd_ac97_bus_ops ops = {
1165 		.write = snd_ca0106_ac97_write,
1166 		.read = snd_ca0106_ac97_read,
1167 	};
1168 
1169 	if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
1170 		return err;
1171 	pbus->no_vra = 1; /* we don't need VRA */
1172 
1173 	memset(&ac97, 0, sizeof(ac97));
1174 	ac97.private_data = chip;
1175 	ac97.scaps = AC97_SCAP_NO_SPDIF;
1176 	return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
1177 }
1178 
1179 static void ca0106_stop_chip(struct snd_ca0106 *chip);
1180 
1181 static int snd_ca0106_free(struct snd_ca0106 *chip)
1182 {
1183 	if (chip->res_port != NULL) {
1184 		/* avoid access to already used hardware */
1185 		ca0106_stop_chip(chip);
1186 	}
1187 	if (chip->irq >= 0)
1188 		free_irq(chip->irq, chip);
1189 	// release the data
1190 #if 1
1191 	if (chip->buffer.area)
1192 		snd_dma_free_pages(&chip->buffer);
1193 #endif
1194 
1195 	// release the i/o port
1196 	release_and_free_resource(chip->res_port);
1197 
1198 	pci_disable_device(chip->pci);
1199 	kfree(chip);
1200 	return 0;
1201 }
1202 
1203 static int snd_ca0106_dev_free(struct snd_device *device)
1204 {
1205 	struct snd_ca0106 *chip = device->device_data;
1206 	return snd_ca0106_free(chip);
1207 }
1208 
1209 static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id)
1210 {
1211 	unsigned int status;
1212 
1213 	struct snd_ca0106 *chip = dev_id;
1214 	int i;
1215 	int mask;
1216         unsigned int stat76;
1217 	struct snd_ca0106_channel *pchannel;
1218 
1219 	status = inl(chip->port + IPR);
1220 	if (! status)
1221 		return IRQ_NONE;
1222 
1223         stat76 = snd_ca0106_ptr_read(chip, EXTENDED_INT, 0);
1224 	/*
1225 	dev_dbg(emu->card->dev, "interrupt status = 0x%08x, stat76=0x%08x\n",
1226 		   status, stat76);
1227 	dev_dbg(emu->card->dev, "ptr=0x%08x\n",
1228 		   snd_ca0106_ptr_read(chip, PLAYBACK_POINTER, 0));
1229 	*/
1230         mask = 0x11; /* 0x1 for one half, 0x10 for the other half period. */
1231 	for(i = 0; i < 4; i++) {
1232 		pchannel = &(chip->playback_channels[i]);
1233 		if (stat76 & mask) {
1234 /* FIXME: Select the correct substream for period elapsed */
1235 			if(pchannel->use) {
1236 				snd_pcm_period_elapsed(pchannel->epcm->substream);
1237 				/* dev_dbg(emu->card->dev, "interrupt [%d] used\n", i); */
1238                         }
1239 		}
1240 		/*
1241 		dev_dbg(emu->card->dev, "channel=%p\n", pchannel);
1242 		dev_dbg(emu->card->dev, "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1243 		*/
1244 		mask <<= 1;
1245 	}
1246         mask = 0x110000; /* 0x1 for one half, 0x10 for the other half period. */
1247 	for(i = 0; i < 4; i++) {
1248 		pchannel = &(chip->capture_channels[i]);
1249 		if (stat76 & mask) {
1250 /* FIXME: Select the correct substream for period elapsed */
1251 			if(pchannel->use) {
1252 				snd_pcm_period_elapsed(pchannel->epcm->substream);
1253 				/* dev_dbg(emu->card->dev, "interrupt [%d] used\n", i); */
1254                         }
1255 		}
1256 		/*
1257 		dev_dbg(emu->card->dev, "channel=%p\n", pchannel);
1258 		dev_dbg(emu->card->dev, "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1259 		*/
1260 		mask <<= 1;
1261 	}
1262 
1263         snd_ca0106_ptr_write(chip, EXTENDED_INT, 0, stat76);
1264 
1265 	if (chip->midi.dev_id &&
1266 	    (status & (chip->midi.ipr_tx|chip->midi.ipr_rx))) {
1267 		if (chip->midi.interrupt)
1268 			chip->midi.interrupt(&chip->midi, status);
1269 		else
1270 			chip->midi.interrupt_disable(&chip->midi, chip->midi.tx_enable | chip->midi.rx_enable);
1271 	}
1272 
1273 	// acknowledge the interrupt if necessary
1274 	outl(status, chip->port+IPR);
1275 
1276 	return IRQ_HANDLED;
1277 }
1278 
1279 static const struct snd_pcm_chmap_elem surround_map[] = {
1280 	{ .channels = 2,
1281 	  .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
1282 	{ }
1283 };
1284 
1285 static const struct snd_pcm_chmap_elem clfe_map[] = {
1286 	{ .channels = 2,
1287 	  .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
1288 	{ }
1289 };
1290 
1291 static const struct snd_pcm_chmap_elem side_map[] = {
1292 	{ .channels = 2,
1293 	  .map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
1294 	{ }
1295 };
1296 
1297 static int snd_ca0106_pcm(struct snd_ca0106 *emu, int device)
1298 {
1299 	struct snd_pcm *pcm;
1300 	struct snd_pcm_substream *substream;
1301 	const struct snd_pcm_chmap_elem *map = NULL;
1302 	int err;
1303 
1304 	err = snd_pcm_new(emu->card, "ca0106", device, 1, 1, &pcm);
1305 	if (err < 0)
1306 		return err;
1307 
1308 	pcm->private_data = emu;
1309 
1310 	switch (device) {
1311 	case 0:
1312 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_front_ops);
1313 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_0_ops);
1314 	  map = snd_pcm_std_chmaps;
1315           break;
1316 	case 1:
1317 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_rear_ops);
1318 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_1_ops);
1319 	  map = surround_map;
1320           break;
1321 	case 2:
1322 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_center_lfe_ops);
1323 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_2_ops);
1324 	  map = clfe_map;
1325           break;
1326 	case 3:
1327 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_unknown_ops);
1328 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_3_ops);
1329 	  map = side_map;
1330           break;
1331         }
1332 
1333 	pcm->info_flags = 0;
1334 	strcpy(pcm->name, "CA0106");
1335 
1336 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
1337 	    substream;
1338 	    substream = substream->next) {
1339 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
1340 					   &emu->pci->dev,
1341 					   64*1024, 64*1024);
1342 	}
1343 
1344 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
1345 	      substream;
1346 	      substream = substream->next) {
1347 		snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
1348 					   &emu->pci->dev,
1349 					   64*1024, 64*1024);
1350 	}
1351 
1352 	err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
1353 				     1 << 2, NULL);
1354 	if (err < 0)
1355 		return err;
1356 
1357 	emu->pcm[device] = pcm;
1358 
1359 	return 0;
1360 }
1361 
1362 #define SPI_REG(reg, value)	(((reg) << SPI_REG_SHIFT) | (value))
1363 static const unsigned int spi_dac_init[] = {
1364 	SPI_REG(SPI_LDA1_REG,	SPI_DA_BIT_0dB), /* 0dB dig. attenuation */
1365 	SPI_REG(SPI_RDA1_REG,	SPI_DA_BIT_0dB),
1366 	SPI_REG(SPI_PL_REG,	SPI_PL_BIT_L_L | SPI_PL_BIT_R_R | SPI_IZD_BIT),
1367 	SPI_REG(SPI_FMT_REG,	SPI_FMT_BIT_I2S | SPI_IWL_BIT_24),
1368 	SPI_REG(SPI_LDA2_REG,	SPI_DA_BIT_0dB),
1369 	SPI_REG(SPI_RDA2_REG,	SPI_DA_BIT_0dB),
1370 	SPI_REG(SPI_LDA3_REG,	SPI_DA_BIT_0dB),
1371 	SPI_REG(SPI_RDA3_REG,	SPI_DA_BIT_0dB),
1372 	SPI_REG(SPI_MASTDA_REG,	SPI_DA_BIT_0dB),
1373 	SPI_REG(9,		0x00),
1374 	SPI_REG(SPI_MS_REG,	SPI_DACD0_BIT | SPI_DACD1_BIT | SPI_DACD2_BIT),
1375 	SPI_REG(12,		0x00),
1376 	SPI_REG(SPI_LDA4_REG,	SPI_DA_BIT_0dB),
1377 	SPI_REG(SPI_RDA4_REG,	SPI_DA_BIT_0dB | SPI_DA_BIT_UPDATE),
1378 	SPI_REG(SPI_DACD4_REG,	SPI_DACD4_BIT),
1379 };
1380 
1381 static const unsigned int i2c_adc_init[][2] = {
1382 	{ 0x17, 0x00 }, /* Reset */
1383 	{ 0x07, 0x00 }, /* Timeout */
1384 	{ 0x0b, 0x22 },  /* Interface control */
1385 	{ 0x0c, 0x22 },  /* Master mode control */
1386 	{ 0x0d, 0x08 },  /* Powerdown control */
1387 	{ 0x0e, 0xcf },  /* Attenuation Left  0x01 = -103dB, 0xff = 24dB */
1388 	{ 0x0f, 0xcf },  /* Attenuation Right 0.5dB steps */
1389 	{ 0x10, 0x7b },  /* ALC Control 1 */
1390 	{ 0x11, 0x00 },  /* ALC Control 2 */
1391 	{ 0x12, 0x32 },  /* ALC Control 3 */
1392 	{ 0x13, 0x00 },  /* Noise gate control */
1393 	{ 0x14, 0xa6 },  /* Limiter control */
1394 	{ 0x15, ADC_MUX_LINEIN },  /* ADC Mixer control */
1395 };
1396 
1397 static void ca0106_init_chip(struct snd_ca0106 *chip, int resume)
1398 {
1399 	int ch;
1400 	unsigned int def_bits;
1401 
1402 	outl(0, chip->port + INTE);
1403 
1404 	/*
1405 	 *  Init to 0x02109204 :
1406 	 *  Clock accuracy    = 0     (1000ppm)
1407 	 *  Sample Rate       = 2     (48kHz)
1408 	 *  Audio Channel     = 1     (Left of 2)
1409 	 *  Source Number     = 0     (Unspecified)
1410 	 *  Generation Status = 1     (Original for Cat Code 12)
1411 	 *  Cat Code          = 12    (Digital Signal Mixer)
1412 	 *  Mode              = 0     (Mode 0)
1413 	 *  Emphasis          = 0     (None)
1414 	 *  CP                = 1     (Copyright unasserted)
1415 	 *  AN                = 0     (Audio data)
1416 	 *  P                 = 0     (Consumer)
1417 	 */
1418 	def_bits =
1419 		SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1420 		SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1421 		SPCS_GENERATIONSTATUS | 0x00001200 |
1422 		0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT;
1423 	if (!resume) {
1424 		chip->spdif_str_bits[0] = chip->spdif_bits[0] = def_bits;
1425 		chip->spdif_str_bits[1] = chip->spdif_bits[1] = def_bits;
1426 		chip->spdif_str_bits[2] = chip->spdif_bits[2] = def_bits;
1427 		chip->spdif_str_bits[3] = chip->spdif_bits[3] = def_bits;
1428 	}
1429 	/* Only SPCS1 has been tested */
1430 	snd_ca0106_ptr_write(chip, SPCS1, 0, chip->spdif_str_bits[1]);
1431 	snd_ca0106_ptr_write(chip, SPCS0, 0, chip->spdif_str_bits[0]);
1432 	snd_ca0106_ptr_write(chip, SPCS2, 0, chip->spdif_str_bits[2]);
1433 	snd_ca0106_ptr_write(chip, SPCS3, 0, chip->spdif_str_bits[3]);
1434 
1435         snd_ca0106_ptr_write(chip, PLAYBACK_MUTE, 0, 0x00fc0000);
1436         snd_ca0106_ptr_write(chip, CAPTURE_MUTE, 0, 0x00fc0000);
1437 
1438         /* Write 0x8000 to AC97_REC_GAIN to mute it. */
1439         outb(AC97_REC_GAIN, chip->port + AC97ADDRESS);
1440         outw(0x8000, chip->port + AC97DATA);
1441 #if 0 /* FIXME: what are these? */
1442 	snd_ca0106_ptr_write(chip, SPCS0, 0, 0x2108006);
1443 	snd_ca0106_ptr_write(chip, 0x42, 0, 0x2108006);
1444 	snd_ca0106_ptr_write(chip, 0x43, 0, 0x2108006);
1445 	snd_ca0106_ptr_write(chip, 0x44, 0, 0x2108006);
1446 #endif
1447 
1448 	/* OSS drivers set this. */
1449 	/* snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0xf0f003f); */
1450 
1451 	/* Analog or Digital output */
1452 	snd_ca0106_ptr_write(chip, SPDIF_SELECT1, 0, 0xf);
1453 	/* 0x0b000000 for digital, 0x000b0000 for analog, from win2000 drivers.
1454 	 * Use 0x000f0000 for surround71
1455 	 */
1456 	snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0x000f0000);
1457 
1458 	chip->spdif_enable = 0; /* Set digital SPDIF output off */
1459 	/*snd_ca0106_ptr_write(chip, 0x45, 0, 0);*/ /* Analogue out */
1460 	/*snd_ca0106_ptr_write(chip, 0x45, 0, 0xf00);*/ /* Digital out */
1461 
1462 	/* goes to 0x40c80000 when doing SPDIF IN/OUT */
1463 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 0, 0x40c81000);
1464 	/* (Mute) CAPTURE feedback into PLAYBACK volume.
1465 	 * Only lower 16 bits matter.
1466 	 */
1467 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 1, 0xffffffff);
1468 	/* SPDIF IN Volume */
1469 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 2, 0x30300000);
1470 	/* SPDIF IN Volume, 0x70 = (vol & 0x3f) | 0x40 */
1471 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 3, 0x00700000);
1472 
1473 	snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING1, 0, 0x32765410);
1474 	snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING2, 0, 0x76767676);
1475 	snd_ca0106_ptr_write(chip, CAPTURE_ROUTING1, 0, 0x32765410);
1476 	snd_ca0106_ptr_write(chip, CAPTURE_ROUTING2, 0, 0x76767676);
1477 
1478 	for (ch = 0; ch < 4; ch++) {
1479 		/* Only high 16 bits matter */
1480 		snd_ca0106_ptr_write(chip, CAPTURE_VOLUME1, ch, 0x30303030);
1481 		snd_ca0106_ptr_write(chip, CAPTURE_VOLUME2, ch, 0x30303030);
1482 #if 0 /* Mute */
1483 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0x40404040);
1484 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0x40404040);
1485 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0xffffffff);
1486 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0xffffffff);
1487 #endif
1488 	}
1489 	if (chip->details->i2c_adc == 1) {
1490 	        /* Select MIC, Line in, TAD in, AUX in */
1491 	        snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4);
1492 		/* Default to CAPTURE_SOURCE to i2s in */
1493 		if (!resume)
1494 			chip->capture_source = 3;
1495 	} else if (chip->details->ac97 == 1) {
1496 	        /* Default to AC97 in */
1497 	        snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x444400e4);
1498 		/* Default to CAPTURE_SOURCE to AC97 in */
1499 		if (!resume)
1500 			chip->capture_source = 4;
1501 	} else {
1502 	        /* Select MIC, Line in, TAD in, AUX in */
1503 	        snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4);
1504 		/* Default to Set CAPTURE_SOURCE to i2s in */
1505 		if (!resume)
1506 			chip->capture_source = 3;
1507 	}
1508 
1509 	if (chip->details->gpio_type == 2) {
1510 		/* The SB0438 use GPIO differently. */
1511 		/* FIXME: Still need to find out what the other GPIO bits do.
1512 		 * E.g. For digital spdif out.
1513 		 */
1514 		outl(0x0, chip->port+GPIO);
1515 		/* outl(0x00f0e000, chip->port+GPIO); */ /* Analog */
1516 		outl(0x005f5301, chip->port+GPIO); /* Analog */
1517 	} else if (chip->details->gpio_type == 1) {
1518 		/* The SB0410 and SB0413 use GPIO differently. */
1519 		/* FIXME: Still need to find out what the other GPIO bits do.
1520 		 * E.g. For digital spdif out.
1521 		 */
1522 		outl(0x0, chip->port+GPIO);
1523 		/* outl(0x00f0e000, chip->port+GPIO); */ /* Analog */
1524 		outl(0x005f5301, chip->port+GPIO); /* Analog */
1525 	} else {
1526 		outl(0x0, chip->port+GPIO);
1527 		outl(0x005f03a3, chip->port+GPIO); /* Analog */
1528 		/* outl(0x005f02a2, chip->port+GPIO); */ /* SPDIF */
1529 	}
1530 	snd_ca0106_intr_enable(chip, 0x105); /* Win2000 uses 0x1e0 */
1531 
1532 	/* outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG); */
1533 	/* 0x1000 causes AC3 to fails. Maybe it effects 24 bit output. */
1534 	/* outl(0x00001409, chip->port+HCFG); */
1535 	/* outl(0x00000009, chip->port+HCFG); */
1536 	/* AC97 2.0, Enable outputs. */
1537 	outl(HCFG_AC97 | HCFG_AUDIOENABLE, chip->port+HCFG);
1538 
1539 	if (chip->details->i2c_adc == 1) {
1540 		/* The SB0410 and SB0413 use I2C to control ADC. */
1541 		int size, n;
1542 
1543 		size = ARRAY_SIZE(i2c_adc_init);
1544 		/* dev_dbg(emu->card->dev, "I2C:array size=0x%x\n", size); */
1545 		for (n = 0; n < size; n++)
1546 			snd_ca0106_i2c_write(chip, i2c_adc_init[n][0],
1547 					     i2c_adc_init[n][1]);
1548 		for (n = 0; n < 4; n++) {
1549 			chip->i2c_capture_volume[n][0] = 0xcf;
1550 			chip->i2c_capture_volume[n][1] = 0xcf;
1551 		}
1552 		chip->i2c_capture_source = 2; /* Line in */
1553 		/* Enable Line-in capture. MIC in currently untested. */
1554 		/* snd_ca0106_i2c_write(chip, ADC_MUX, ADC_MUX_LINEIN); */
1555 	}
1556 
1557 	if (chip->details->spi_dac) {
1558 		/* The SB0570 use SPI to control DAC. */
1559 		int size, n;
1560 
1561 		size = ARRAY_SIZE(spi_dac_init);
1562 		for (n = 0; n < size; n++) {
1563 			int reg = spi_dac_init[n] >> SPI_REG_SHIFT;
1564 
1565 			snd_ca0106_spi_write(chip, spi_dac_init[n]);
1566 			if (reg < ARRAY_SIZE(chip->spi_dac_reg))
1567 				chip->spi_dac_reg[reg] = spi_dac_init[n];
1568 		}
1569 
1570 		/* Enable front dac only */
1571 		snd_ca0106_pcm_power_dac(chip, PCM_FRONT_CHANNEL, 1);
1572 	}
1573 }
1574 
1575 static void ca0106_stop_chip(struct snd_ca0106 *chip)
1576 {
1577 	/* disable interrupts */
1578 	snd_ca0106_ptr_write(chip, BASIC_INTERRUPT, 0, 0);
1579 	outl(0, chip->port + INTE);
1580 	snd_ca0106_ptr_write(chip, EXTENDED_INT_MASK, 0, 0);
1581 	udelay(1000);
1582 	/* disable audio */
1583 	/* outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG); */
1584 	outl(0, chip->port + HCFG);
1585 	/* FIXME: We need to stop and DMA transfers here.
1586 	 *        But as I am not sure how yet, we cannot from the dma pages.
1587 	 * So we can fix: snd-malloc: Memory leak?  pages not freed = 8
1588 	 */
1589 }
1590 
1591 static int snd_ca0106_create(int dev, struct snd_card *card,
1592 					 struct pci_dev *pci,
1593 					 struct snd_ca0106 **rchip)
1594 {
1595 	struct snd_ca0106 *chip;
1596 	const struct snd_ca0106_details *c;
1597 	int err;
1598 	static const struct snd_device_ops ops = {
1599 		.dev_free = snd_ca0106_dev_free,
1600 	};
1601 
1602 	*rchip = NULL;
1603 
1604 	err = pci_enable_device(pci);
1605 	if (err < 0)
1606 		return err;
1607 	if (dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0 ||
1608 	    dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) {
1609 		dev_err(card->dev, "error to set 32bit mask DMA\n");
1610 		pci_disable_device(pci);
1611 		return -ENXIO;
1612 	}
1613 
1614 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1615 	if (chip == NULL) {
1616 		pci_disable_device(pci);
1617 		return -ENOMEM;
1618 	}
1619 
1620 	chip->card = card;
1621 	chip->pci = pci;
1622 	chip->irq = -1;
1623 
1624 	spin_lock_init(&chip->emu_lock);
1625 
1626 	chip->port = pci_resource_start(pci, 0);
1627 	chip->res_port = request_region(chip->port, 0x20, "snd_ca0106");
1628 	if (!chip->res_port) {
1629 		snd_ca0106_free(chip);
1630 		dev_err(card->dev, "cannot allocate the port\n");
1631 		return -EBUSY;
1632 	}
1633 
1634 	if (request_irq(pci->irq, snd_ca0106_interrupt,
1635 			IRQF_SHARED, KBUILD_MODNAME, chip)) {
1636 		snd_ca0106_free(chip);
1637 		dev_err(card->dev, "cannot grab irq\n");
1638 		return -EBUSY;
1639 	}
1640 	chip->irq = pci->irq;
1641 	card->sync_irq = chip->irq;
1642 
1643 	/* This stores the periods table. */
1644 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &pci->dev,
1645 				1024, &chip->buffer) < 0) {
1646 		snd_ca0106_free(chip);
1647 		return -ENOMEM;
1648 	}
1649 
1650 	pci_set_master(pci);
1651 	/* read serial */
1652 	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
1653 	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
1654 	dev_info(card->dev, "Model %04x Rev %08x Serial %08x\n",
1655 	       chip->model, pci->revision, chip->serial);
1656 	strcpy(card->driver, "CA0106");
1657 	strcpy(card->shortname, "CA0106");
1658 
1659 	for (c = ca0106_chip_details; c->serial; c++) {
1660 		if (subsystem[dev]) {
1661 			if (c->serial == subsystem[dev])
1662 				break;
1663 		} else if (c->serial == chip->serial)
1664 			break;
1665 	}
1666 	chip->details = c;
1667 	if (subsystem[dev]) {
1668 		dev_info(card->dev, "Sound card name=%s, "
1669 		       "subsystem=0x%x. Forced to subsystem=0x%x\n",
1670 		       c->name, chip->serial, subsystem[dev]);
1671 	}
1672 
1673 	sprintf(card->longname, "%s at 0x%lx irq %i",
1674 		c->name, chip->port, chip->irq);
1675 
1676 	ca0106_init_chip(chip, 0);
1677 
1678 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1679 	if (err < 0) {
1680 		snd_ca0106_free(chip);
1681 		return err;
1682 	}
1683 	*rchip = chip;
1684 	return 0;
1685 }
1686 
1687 
1688 static void ca0106_midi_interrupt_enable(struct snd_ca_midi *midi, int intr)
1689 {
1690 	snd_ca0106_intr_enable((struct snd_ca0106 *)(midi->dev_id), intr);
1691 }
1692 
1693 static void ca0106_midi_interrupt_disable(struct snd_ca_midi *midi, int intr)
1694 {
1695 	snd_ca0106_intr_disable((struct snd_ca0106 *)(midi->dev_id), intr);
1696 }
1697 
1698 static unsigned char ca0106_midi_read(struct snd_ca_midi *midi, int idx)
1699 {
1700 	return (unsigned char)snd_ca0106_ptr_read((struct snd_ca0106 *)(midi->dev_id),
1701 						  midi->port + idx, 0);
1702 }
1703 
1704 static void ca0106_midi_write(struct snd_ca_midi *midi, int data, int idx)
1705 {
1706 	snd_ca0106_ptr_write((struct snd_ca0106 *)(midi->dev_id), midi->port + idx, 0, data);
1707 }
1708 
1709 static struct snd_card *ca0106_dev_id_card(void *dev_id)
1710 {
1711 	return ((struct snd_ca0106 *)dev_id)->card;
1712 }
1713 
1714 static int ca0106_dev_id_port(void *dev_id)
1715 {
1716 	return ((struct snd_ca0106 *)dev_id)->port;
1717 }
1718 
1719 static int snd_ca0106_midi(struct snd_ca0106 *chip, unsigned int channel)
1720 {
1721 	struct snd_ca_midi *midi;
1722 	char *name;
1723 	int err;
1724 
1725 	if (channel == CA0106_MIDI_CHAN_B) {
1726 		name = "CA0106 MPU-401 (UART) B";
1727 		midi =  &chip->midi2;
1728 		midi->tx_enable = INTE_MIDI_TX_B;
1729 		midi->rx_enable = INTE_MIDI_RX_B;
1730 		midi->ipr_tx = IPR_MIDI_TX_B;
1731 		midi->ipr_rx = IPR_MIDI_RX_B;
1732 		midi->port = MIDI_UART_B_DATA;
1733 	} else {
1734 		name = "CA0106 MPU-401 (UART)";
1735 		midi =  &chip->midi;
1736 		midi->tx_enable = INTE_MIDI_TX_A;
1737 		midi->rx_enable = INTE_MIDI_TX_B;
1738 		midi->ipr_tx = IPR_MIDI_TX_A;
1739 		midi->ipr_rx = IPR_MIDI_RX_A;
1740 		midi->port = MIDI_UART_A_DATA;
1741 	}
1742 
1743 	midi->reset = CA0106_MPU401_RESET;
1744 	midi->enter_uart = CA0106_MPU401_ENTER_UART;
1745 	midi->ack = CA0106_MPU401_ACK;
1746 
1747 	midi->input_avail = CA0106_MIDI_INPUT_AVAIL;
1748 	midi->output_ready = CA0106_MIDI_OUTPUT_READY;
1749 
1750 	midi->channel = channel;
1751 
1752 	midi->interrupt_enable = ca0106_midi_interrupt_enable;
1753 	midi->interrupt_disable = ca0106_midi_interrupt_disable;
1754 
1755 	midi->read = ca0106_midi_read;
1756 	midi->write = ca0106_midi_write;
1757 
1758 	midi->get_dev_id_card = ca0106_dev_id_card;
1759 	midi->get_dev_id_port = ca0106_dev_id_port;
1760 
1761 	midi->dev_id = chip;
1762 
1763 	if ((err = ca_midi_init(chip, midi, 0, name)) < 0)
1764 		return err;
1765 
1766 	return 0;
1767 }
1768 
1769 
1770 static int snd_ca0106_probe(struct pci_dev *pci,
1771 					const struct pci_device_id *pci_id)
1772 {
1773 	static int dev;
1774 	struct snd_card *card;
1775 	struct snd_ca0106 *chip;
1776 	int i, err;
1777 
1778 	if (dev >= SNDRV_CARDS)
1779 		return -ENODEV;
1780 	if (!enable[dev]) {
1781 		dev++;
1782 		return -ENOENT;
1783 	}
1784 
1785 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1786 			   0, &card);
1787 	if (err < 0)
1788 		return err;
1789 
1790 	err = snd_ca0106_create(dev, card, pci, &chip);
1791 	if (err < 0)
1792 		goto error;
1793 	card->private_data = chip;
1794 
1795 	for (i = 0; i < 4; i++) {
1796 		err = snd_ca0106_pcm(chip, i);
1797 		if (err < 0)
1798 			goto error;
1799 	}
1800 
1801 	if (chip->details->ac97 == 1) {
1802 		/* The SB0410 and SB0413 do not have an AC97 chip. */
1803 		err = snd_ca0106_ac97(chip);
1804 		if (err < 0)
1805 			goto error;
1806 	}
1807 	err = snd_ca0106_mixer(chip);
1808 	if (err < 0)
1809 		goto error;
1810 
1811 	dev_dbg(card->dev, "probe for MIDI channel A ...");
1812 	err = snd_ca0106_midi(chip, CA0106_MIDI_CHAN_A);
1813 	if (err < 0)
1814 		goto error;
1815 	dev_dbg(card->dev, " done.\n");
1816 
1817 #ifdef CONFIG_SND_PROC_FS
1818 	snd_ca0106_proc_init(chip);
1819 #endif
1820 
1821 	err = snd_card_register(card);
1822 	if (err < 0)
1823 		goto error;
1824 
1825 	pci_set_drvdata(pci, card);
1826 	dev++;
1827 	return 0;
1828 
1829  error:
1830 	snd_card_free(card);
1831 	return err;
1832 }
1833 
1834 static void snd_ca0106_remove(struct pci_dev *pci)
1835 {
1836 	snd_card_free(pci_get_drvdata(pci));
1837 }
1838 
1839 #ifdef CONFIG_PM_SLEEP
1840 static int snd_ca0106_suspend(struct device *dev)
1841 {
1842 	struct snd_card *card = dev_get_drvdata(dev);
1843 	struct snd_ca0106 *chip = card->private_data;
1844 
1845 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1846 	if (chip->details->ac97)
1847 		snd_ac97_suspend(chip->ac97);
1848 	snd_ca0106_mixer_suspend(chip);
1849 
1850 	ca0106_stop_chip(chip);
1851 	return 0;
1852 }
1853 
1854 static int snd_ca0106_resume(struct device *dev)
1855 {
1856 	struct snd_card *card = dev_get_drvdata(dev);
1857 	struct snd_ca0106 *chip = card->private_data;
1858 	int i;
1859 
1860 	ca0106_init_chip(chip, 1);
1861 
1862 	if (chip->details->ac97)
1863 		snd_ac97_resume(chip->ac97);
1864 	snd_ca0106_mixer_resume(chip);
1865 	if (chip->details->spi_dac) {
1866 		for (i = 0; i < ARRAY_SIZE(chip->spi_dac_reg); i++)
1867 			snd_ca0106_spi_write(chip, chip->spi_dac_reg[i]);
1868 	}
1869 
1870 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1871 	return 0;
1872 }
1873 
1874 static SIMPLE_DEV_PM_OPS(snd_ca0106_pm, snd_ca0106_suspend, snd_ca0106_resume);
1875 #define SND_CA0106_PM_OPS	&snd_ca0106_pm
1876 #else
1877 #define SND_CA0106_PM_OPS	NULL
1878 #endif
1879 
1880 // PCI IDs
1881 static const struct pci_device_id snd_ca0106_ids[] = {
1882 	{ PCI_VDEVICE(CREATIVE, 0x0007), 0 },	/* Audigy LS or Live 24bit */
1883 	{ 0, }
1884 };
1885 MODULE_DEVICE_TABLE(pci, snd_ca0106_ids);
1886 
1887 // pci_driver definition
1888 static struct pci_driver ca0106_driver = {
1889 	.name = KBUILD_MODNAME,
1890 	.id_table = snd_ca0106_ids,
1891 	.probe = snd_ca0106_probe,
1892 	.remove = snd_ca0106_remove,
1893 	.driver = {
1894 		.pm = SND_CA0106_PM_OPS,
1895 	},
1896 };
1897 
1898 module_pci_driver(ca0106_driver);
1899