xref: /openbmc/linux/sound/pci/ca0106/ca0106_main.c (revision b6dcefde)
1 /*
2  *  Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
3  *  Driver CA0106 chips. e.g. Sound Blaster Audigy LS and Live 24bit
4  *  Version: 0.0.25
5  *
6  *  FEATURES currently supported:
7  *    Front, Rear and Center/LFE.
8  *    Surround40 and Surround51.
9  *    Capture from MIC an LINE IN input.
10  *    SPDIF digital playback of PCM stereo and AC3/DTS works.
11  *    (One can use a standard mono mini-jack to one RCA plugs cable.
12  *     or one can use a standard stereo mini-jack to two RCA plugs cable.
13  *     Plug one of the RCA plugs into the Coax input of the external decoder/receiver.)
14  *    ( In theory one could output 3 different AC3 streams at once, to 3 different SPDIF outputs. )
15  *    Notes on how to capture sound:
16  *      The AC97 is used in the PLAYBACK direction.
17  *      The output from the AC97 chip, instead of reaching the speakers, is fed into the Philips 1361T ADC.
18  *      So, to record from the MIC, set the MIC Playback volume to max,
19  *      unmute the MIC and turn up the MASTER Playback volume.
20  *      So, to prevent feedback when capturing, minimise the "Capture feedback into Playback" volume.
21  *
22  *    The only playback controls that currently do anything are: -
23  *    Analog Front
24  *    Analog Rear
25  *    Analog Center/LFE
26  *    SPDIF Front
27  *    SPDIF Rear
28  *    SPDIF Center/LFE
29  *
30  *    For capture from Mic in or Line in.
31  *    Digital/Analog ( switch must be in Analog mode for CAPTURE. )
32  *
33  *    CAPTURE feedback into PLAYBACK
34  *
35  *  Changelog:
36  *    Support interrupts per period.
37  *    Removed noise from Center/LFE channel when in Analog mode.
38  *    Rename and remove mixer controls.
39  *  0.0.6
40  *    Use separate card based DMA buffer for periods table list.
41  *  0.0.7
42  *    Change remove and rename ctrls into lists.
43  *  0.0.8
44  *    Try to fix capture sources.
45  *  0.0.9
46  *    Fix AC3 output.
47  *    Enable S32_LE format support.
48  *  0.0.10
49  *    Enable playback 48000 and 96000 rates. (Rates other that these do not work, even with "plug:front".)
50  *  0.0.11
51  *    Add Model name recognition.
52  *  0.0.12
53  *    Correct interrupt timing. interrupt at end of period, instead of in the middle of a playback period.
54  *    Remove redundent "voice" handling.
55  *  0.0.13
56  *    Single trigger call for multi channels.
57  *  0.0.14
58  *    Set limits based on what the sound card hardware can do.
59  *    playback periods_min=2, periods_max=8
60  *    capture hw constraints require period_size = n * 64 bytes.
61  *    playback hw constraints require period_size = n * 64 bytes.
62  *  0.0.15
63  *    Minor updates.
64  *  0.0.16
65  *    Implement 192000 sample rate.
66  *  0.0.17
67  *    Add support for SB0410 and SB0413.
68  *  0.0.18
69  *    Modified Copyright message.
70  *  0.0.19
71  *    Finally fix support for SB Live 24 bit. SB0410 and SB0413.
72  *    The output codec needs resetting, otherwise all output is muted.
73  *  0.0.20
74  *    Merge "pci_disable_device(pci);" fixes.
75  *  0.0.21
76  *    Add 4 capture channels. (SPDIF only comes in on channel 0. )
77  *    Add SPDIF capture using optional digital I/O module for SB Live 24bit. (Analog capture does not yet work.)
78  *  0.0.22
79  *    Add support for MSI K8N Diamond Motherboard with onboard SB Live 24bit without AC97. From kiksen, bug #901
80  *  0.0.23
81  *    Implement support for Line-in capture on SB Live 24bit.
82  *  0.0.24
83  *    Add support for mute control on SB Live 24bit (cards w/ SPI DAC)
84  *  0.0.25
85  *    Powerdown SPI DAC channels when not in use
86  *
87  *  BUGS:
88  *    Some stability problems when unloading the snd-ca0106 kernel module.
89  *    --
90  *
91  *  TODO:
92  *    4 Capture channels, only one implemented so far.
93  *    Other capture rates apart from 48khz not implemented.
94  *    MIDI
95  *    --
96  *  GENERAL INFO:
97  *    Model: SB0310
98  *    P17 Chip: CA0106-DAT
99  *    AC97 Codec: STAC 9721
100  *    ADC: Philips 1361T (Stereo 24bit)
101  *    DAC: WM8746EDS (6-channel, 24bit, 192Khz)
102  *
103  *  GENERAL INFO:
104  *    Model: SB0410
105  *    P17 Chip: CA0106-DAT
106  *    AC97 Codec: None
107  *    ADC: WM8775EDS (4 Channel)
108  *    DAC: CS4382 (114 dB, 24-Bit, 192 kHz, 8-Channel D/A Converter with DSD Support)
109  *    SPDIF Out control switches between Mic in and SPDIF out.
110  *    No sound out or mic input working yet.
111  *
112  *  GENERAL INFO:
113  *    Model: SB0413
114  *    P17 Chip: CA0106-DAT
115  *    AC97 Codec: None.
116  *    ADC: Unknown
117  *    DAC: Unknown
118  *    Trying to handle it like the SB0410.
119  *
120  *  This code was initally based on code from ALSA's emu10k1x.c which is:
121  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
122  *
123  *   This program is free software; you can redistribute it and/or modify
124  *   it under the terms of the GNU General Public License as published by
125  *   the Free Software Foundation; either version 2 of the License, or
126  *   (at your option) any later version.
127  *
128  *   This program is distributed in the hope that it will be useful,
129  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
130  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
131  *   GNU General Public License for more details.
132  *
133  *   You should have received a copy of the GNU General Public License
134  *   along with this program; if not, write to the Free Software
135  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
136  *
137  */
138 #include <linux/delay.h>
139 #include <linux/init.h>
140 #include <linux/interrupt.h>
141 #include <linux/pci.h>
142 #include <linux/slab.h>
143 #include <linux/moduleparam.h>
144 #include <linux/dma-mapping.h>
145 #include <sound/core.h>
146 #include <sound/initval.h>
147 #include <sound/pcm.h>
148 #include <sound/ac97_codec.h>
149 #include <sound/info.h>
150 
151 MODULE_AUTHOR("James Courtier-Dutton <James@superbug.demon.co.uk>");
152 MODULE_DESCRIPTION("CA0106");
153 MODULE_LICENSE("GPL");
154 MODULE_SUPPORTED_DEVICE("{{Creative,SB CA0106 chip}}");
155 
156 // module parameters (see "Module Parameters")
157 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
158 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
159 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
160 static uint subsystem[SNDRV_CARDS]; /* Force card subsystem model */
161 
162 module_param_array(index, int, NULL, 0444);
163 MODULE_PARM_DESC(index, "Index value for the CA0106 soundcard.");
164 module_param_array(id, charp, NULL, 0444);
165 MODULE_PARM_DESC(id, "ID string for the CA0106 soundcard.");
166 module_param_array(enable, bool, NULL, 0444);
167 MODULE_PARM_DESC(enable, "Enable the CA0106 soundcard.");
168 module_param_array(subsystem, uint, NULL, 0444);
169 MODULE_PARM_DESC(subsystem, "Force card subsystem model.");
170 
171 #include "ca0106.h"
172 
173 static struct snd_ca0106_details ca0106_chip_details[] = {
174 	 /* Sound Blaster X-Fi Extreme Audio. This does not have an AC97. 53SB079000000 */
175 	 /* It is really just a normal SB Live 24bit. */
176 	 /* Tested:
177 	  * See ALSA bug#3251
178 	  */
179 	 { .serial = 0x10131102,
180 	   .name   = "X-Fi Extreme Audio [SBxxxx]",
181 	   .gpio_type = 1,
182 	   .i2c_adc = 1 } ,
183 	 /* Sound Blaster X-Fi Extreme Audio. This does not have an AC97. 53SB079000000 */
184 	 /* It is really just a normal SB Live 24bit. */
185 	 /*
186  	  * CTRL:CA0111-WTLF
187 	  * ADC: WM8775SEDS
188 	  * DAC: CS4382-KQZ
189 	  */
190 	 /* Tested:
191 	  * Playback on front, rear, center/lfe speakers
192 	  * Capture from Mic in.
193 	  * Not-Tested:
194 	  * Capture from Line in.
195 	  * Playback to digital out.
196 	  */
197 	 { .serial = 0x10121102,
198 	   .name   = "X-Fi Extreme Audio [SB0790]",
199 	   .gpio_type = 1,
200 	   .i2c_adc = 1 } ,
201 	 /* New Dell Sound Blaster Live! 7.1 24bit. This does not have an AC97.  */
202 	 /* AudigyLS[SB0310] */
203 	 { .serial = 0x10021102,
204 	   .name   = "AudigyLS [SB0310]",
205 	   .ac97   = 1 } ,
206 	 /* Unknown AudigyLS that also says SB0310 on it */
207 	 { .serial = 0x10051102,
208 	   .name   = "AudigyLS [SB0310b]",
209 	   .ac97   = 1 } ,
210 	 /* New Sound Blaster Live! 7.1 24bit. This does not have an AC97. 53SB041000001 */
211 	 { .serial = 0x10061102,
212 	   .name   = "Live! 7.1 24bit [SB0410]",
213 	   .gpio_type = 1,
214 	   .i2c_adc = 1 } ,
215 	 /* New Dell Sound Blaster Live! 7.1 24bit. This does not have an AC97.  */
216 	 { .serial = 0x10071102,
217 	   .name   = "Live! 7.1 24bit [SB0413]",
218 	   .gpio_type = 1,
219 	   .i2c_adc = 1 } ,
220 	 /* New Audigy SE. Has a different DAC. */
221 	 /* SB0570:
222 	  * CTRL:CA0106-DAT
223 	  * ADC: WM8775EDS
224 	  * DAC: WM8768GEDS
225 	  */
226 	 { .serial = 0x100a1102,
227 	   .name   = "Audigy SE [SB0570]",
228 	   .gpio_type = 1,
229 	   .i2c_adc = 1,
230 	   .spi_dac = 1 } ,
231 	 /* New Audigy LS. Has a different DAC. */
232 	 /* SB0570:
233 	  * CTRL:CA0106-DAT
234 	  * ADC: WM8775EDS
235 	  * DAC: WM8768GEDS
236 	  */
237 	 { .serial = 0x10111102,
238 	   .name   = "Audigy SE OEM [SB0570a]",
239 	   .gpio_type = 1,
240 	   .i2c_adc = 1,
241 	   .spi_dac = 1 } ,
242 	 /* MSI K8N Diamond Motherboard with onboard SB Live 24bit without AC97 */
243 	 /* SB0438
244 	  * CTRL:CA0106-DAT
245 	  * ADC: WM8775SEDS
246 	  * DAC: CS4382-KQZ
247 	  */
248 	 { .serial = 0x10091462,
249 	   .name   = "MSI K8N Diamond MB [SB0438]",
250 	   .gpio_type = 2,
251 	   .i2c_adc = 1 } ,
252 	 /* MSI K8N Diamond PLUS MB */
253 	 { .serial = 0x10091102,
254 	   .name   = "MSI K8N Diamond MB",
255 	   .gpio_type = 2,
256 	   .i2c_adc = 1,
257 	   .spi_dac = 1 } ,
258 	/* Giga-byte GA-G1975X mobo
259 	 * Novell bnc#395807
260 	 */
261 	/* FIXME: the GPIO and I2C setting aren't tested well */
262 	{ .serial = 0x1458a006,
263 	  .name = "Giga-byte GA-G1975X",
264 	  .gpio_type = 1,
265 	  .i2c_adc = 1 },
266 	 /* Shuttle XPC SD31P which has an onboard Creative Labs
267 	  * Sound Blaster Live! 24-bit EAX
268 	  * high-definition 7.1 audio processor".
269 	  * Added using info from andrewvegan in alsa bug #1298
270 	  */
271 	 { .serial = 0x30381297,
272 	   .name   = "Shuttle XPC SD31P [SD31P]",
273 	   .gpio_type = 1,
274 	   .i2c_adc = 1 } ,
275 	/* Shuttle XPC SD11G5 which has an onboard Creative Labs
276 	 * Sound Blaster Live! 24-bit EAX
277 	 * high-definition 7.1 audio processor".
278 	 * Fixes ALSA bug#1600
279          */
280 	{ .serial = 0x30411297,
281 	  .name = "Shuttle XPC SD11G5 [SD11G5]",
282 	  .gpio_type = 1,
283 	  .i2c_adc = 1 } ,
284 	 { .serial = 0,
285 	   .name   = "AudigyLS [Unknown]" }
286 };
287 
288 /* hardware definition */
289 static struct snd_pcm_hardware snd_ca0106_playback_hw = {
290 	.info =			SNDRV_PCM_INFO_MMAP |
291 				SNDRV_PCM_INFO_INTERLEAVED |
292 				SNDRV_PCM_INFO_BLOCK_TRANSFER |
293 				SNDRV_PCM_INFO_MMAP_VALID |
294 				SNDRV_PCM_INFO_SYNC_START,
295 	.formats =		SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
296 	.rates =		(SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |
297 				 SNDRV_PCM_RATE_192000),
298 	.rate_min =		48000,
299 	.rate_max =		192000,
300 	.channels_min =		2,  //1,
301 	.channels_max =		2,  //6,
302 	.buffer_bytes_max =	((65536 - 64) * 8),
303 	.period_bytes_min =	64,
304 	.period_bytes_max =	(65536 - 64),
305 	.periods_min =		2,
306 	.periods_max =		8,
307 	.fifo_size =		0,
308 };
309 
310 static struct snd_pcm_hardware snd_ca0106_capture_hw = {
311 	.info =			(SNDRV_PCM_INFO_MMAP |
312 				 SNDRV_PCM_INFO_INTERLEAVED |
313 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
314 				 SNDRV_PCM_INFO_MMAP_VALID),
315 	.formats =		SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
316 #if 0 /* FIXME: looks like 44.1kHz capture causes noisy output on 48kHz */
317 	.rates =		(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
318 				 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),
319 	.rate_min =		44100,
320 #else
321 	.rates =		(SNDRV_PCM_RATE_48000 |
322 				 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),
323 	.rate_min =		48000,
324 #endif /* FIXME */
325 	.rate_max =		192000,
326 	.channels_min =		2,
327 	.channels_max =		2,
328 	.buffer_bytes_max =	65536 - 128,
329 	.period_bytes_min =	64,
330 	.period_bytes_max =	32768 - 64,
331 	.periods_min =		2,
332 	.periods_max =		2,
333 	.fifo_size =		0,
334 };
335 
336 unsigned int snd_ca0106_ptr_read(struct snd_ca0106 * emu,
337 					  unsigned int reg,
338 					  unsigned int chn)
339 {
340 	unsigned long flags;
341 	unsigned int regptr, val;
342 
343 	regptr = (reg << 16) | chn;
344 
345 	spin_lock_irqsave(&emu->emu_lock, flags);
346 	outl(regptr, emu->port + PTR);
347 	val = inl(emu->port + DATA);
348 	spin_unlock_irqrestore(&emu->emu_lock, flags);
349 	return val;
350 }
351 
352 void snd_ca0106_ptr_write(struct snd_ca0106 *emu,
353 				   unsigned int reg,
354 				   unsigned int chn,
355 				   unsigned int data)
356 {
357 	unsigned int regptr;
358 	unsigned long flags;
359 
360 	regptr = (reg << 16) | chn;
361 
362 	spin_lock_irqsave(&emu->emu_lock, flags);
363 	outl(regptr, emu->port + PTR);
364 	outl(data, emu->port + DATA);
365 	spin_unlock_irqrestore(&emu->emu_lock, flags);
366 }
367 
368 int snd_ca0106_spi_write(struct snd_ca0106 * emu,
369 				   unsigned int data)
370 {
371 	unsigned int reset, set;
372 	unsigned int reg, tmp;
373 	int n, result;
374 	reg = SPI;
375 	if (data > 0xffff) /* Only 16bit values allowed */
376 		return 1;
377 	tmp = snd_ca0106_ptr_read(emu, reg, 0);
378 	reset = (tmp & ~0x3ffff) | 0x20000; /* Set xxx20000 */
379 	set = reset | 0x10000; /* Set xxx1xxxx */
380 	snd_ca0106_ptr_write(emu, reg, 0, reset | data);
381 	tmp = snd_ca0106_ptr_read(emu, reg, 0); /* write post */
382 	snd_ca0106_ptr_write(emu, reg, 0, set | data);
383 	result = 1;
384 	/* Wait for status bit to return to 0 */
385 	for (n = 0; n < 100; n++) {
386 		udelay(10);
387 		tmp = snd_ca0106_ptr_read(emu, reg, 0);
388 		if (!(tmp & 0x10000)) {
389 			result = 0;
390 			break;
391 		}
392 	}
393 	if (result) /* Timed out */
394 		return 1;
395 	snd_ca0106_ptr_write(emu, reg, 0, reset | data);
396 	tmp = snd_ca0106_ptr_read(emu, reg, 0); /* Write post */
397 	return 0;
398 }
399 
400 /* The ADC does not support i2c read, so only write is implemented */
401 int snd_ca0106_i2c_write(struct snd_ca0106 *emu,
402 				u32 reg,
403 				u32 value)
404 {
405 	u32 tmp;
406 	int timeout = 0;
407 	int status;
408 	int retry;
409 	if ((reg > 0x7f) || (value > 0x1ff)) {
410 		snd_printk(KERN_ERR "i2c_write: invalid values.\n");
411 		return -EINVAL;
412 	}
413 
414 	tmp = reg << 25 | value << 16;
415 	/*
416 	snd_printk(KERN_DEBUG "I2C-write:reg=0x%x, value=0x%x\n", reg, value);
417 	*/
418 	/* Not sure what this I2C channel controls. */
419 	/* snd_ca0106_ptr_write(emu, I2C_D0, 0, tmp); */
420 
421 	/* This controls the I2C connected to the WM8775 ADC Codec */
422 	snd_ca0106_ptr_write(emu, I2C_D1, 0, tmp);
423 
424 	for (retry = 0; retry < 10; retry++) {
425 		/* Send the data to i2c */
426 		//tmp = snd_ca0106_ptr_read(emu, I2C_A, 0);
427 		//tmp = tmp & ~(I2C_A_ADC_READ|I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD_MASK);
428 		tmp = 0;
429 		tmp = tmp | (I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD);
430 		snd_ca0106_ptr_write(emu, I2C_A, 0, tmp);
431 
432 		/* Wait till the transaction ends */
433 		while (1) {
434 			status = snd_ca0106_ptr_read(emu, I2C_A, 0);
435 			/*snd_printk(KERN_DEBUG "I2C:status=0x%x\n", status);*/
436 			timeout++;
437 			if ((status & I2C_A_ADC_START) == 0)
438 				break;
439 
440 			if (timeout > 1000)
441 				break;
442 		}
443 		//Read back and see if the transaction is successful
444 		if ((status & I2C_A_ADC_ABORT) == 0)
445 			break;
446 	}
447 
448 	if (retry == 10) {
449 		snd_printk(KERN_ERR "Writing to ADC failed!\n");
450 		return -EINVAL;
451 	}
452 
453     	return 0;
454 }
455 
456 
457 static void snd_ca0106_intr_enable(struct snd_ca0106 *emu, unsigned int intrenb)
458 {
459 	unsigned long flags;
460 	unsigned int intr_enable;
461 
462 	spin_lock_irqsave(&emu->emu_lock, flags);
463 	intr_enable = inl(emu->port + INTE) | intrenb;
464 	outl(intr_enable, emu->port + INTE);
465 	spin_unlock_irqrestore(&emu->emu_lock, flags);
466 }
467 
468 static void snd_ca0106_intr_disable(struct snd_ca0106 *emu, unsigned int intrenb)
469 {
470 	unsigned long flags;
471 	unsigned int intr_enable;
472 
473 	spin_lock_irqsave(&emu->emu_lock, flags);
474 	intr_enable = inl(emu->port + INTE) & ~intrenb;
475 	outl(intr_enable, emu->port + INTE);
476 	spin_unlock_irqrestore(&emu->emu_lock, flags);
477 }
478 
479 
480 static void snd_ca0106_pcm_free_substream(struct snd_pcm_runtime *runtime)
481 {
482 	kfree(runtime->private_data);
483 }
484 
485 static const int spi_dacd_reg[] = {
486 	[PCM_FRONT_CHANNEL]	= SPI_DACD4_REG,
487 	[PCM_REAR_CHANNEL]	= SPI_DACD0_REG,
488 	[PCM_CENTER_LFE_CHANNEL]= SPI_DACD2_REG,
489 	[PCM_UNKNOWN_CHANNEL]	= SPI_DACD1_REG,
490 };
491 static const int spi_dacd_bit[] = {
492 	[PCM_FRONT_CHANNEL]	= SPI_DACD4_BIT,
493 	[PCM_REAR_CHANNEL]	= SPI_DACD0_BIT,
494 	[PCM_CENTER_LFE_CHANNEL]= SPI_DACD2_BIT,
495 	[PCM_UNKNOWN_CHANNEL]	= SPI_DACD1_BIT,
496 };
497 
498 static void restore_spdif_bits(struct snd_ca0106 *chip, int idx)
499 {
500 	if (chip->spdif_str_bits[idx] != chip->spdif_bits[idx]) {
501 		chip->spdif_str_bits[idx] = chip->spdif_bits[idx];
502 		snd_ca0106_ptr_write(chip, SPCS0 + idx, 0,
503 				     chip->spdif_str_bits[idx]);
504 	}
505 }
506 
507 /* open_playback callback */
508 static int snd_ca0106_pcm_open_playback_channel(struct snd_pcm_substream *substream,
509 						int channel_id)
510 {
511 	struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
512         struct snd_ca0106_channel *channel = &(chip->playback_channels[channel_id]);
513 	struct snd_ca0106_pcm *epcm;
514 	struct snd_pcm_runtime *runtime = substream->runtime;
515 	int err;
516 
517 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
518 
519 	if (epcm == NULL)
520 		return -ENOMEM;
521 	epcm->emu = chip;
522 	epcm->substream = substream;
523         epcm->channel_id=channel_id;
524 
525 	runtime->private_data = epcm;
526 	runtime->private_free = snd_ca0106_pcm_free_substream;
527 
528 	runtime->hw = snd_ca0106_playback_hw;
529 
530         channel->emu = chip;
531         channel->number = channel_id;
532 
533 	channel->use = 1;
534 	/*
535 	printk(KERN_DEBUG "open:channel_id=%d, chip=%p, channel=%p\n",
536 	       channel_id, chip, channel);
537 	*/
538         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
539 	channel->epcm = epcm;
540 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
541                 return err;
542 	if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
543                 return err;
544 	snd_pcm_set_sync(substream);
545 
546 	if (chip->details->spi_dac && channel_id != PCM_FRONT_CHANNEL) {
547 		const int reg = spi_dacd_reg[channel_id];
548 
549 		/* Power up dac */
550 		chip->spi_dac_reg[reg] &= ~spi_dacd_bit[channel_id];
551 		err = snd_ca0106_spi_write(chip, chip->spi_dac_reg[reg]);
552 		if (err < 0)
553 			return err;
554 	}
555 
556 	restore_spdif_bits(chip, channel_id);
557 
558 	return 0;
559 }
560 
561 /* close callback */
562 static int snd_ca0106_pcm_close_playback(struct snd_pcm_substream *substream)
563 {
564 	struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
565 	struct snd_pcm_runtime *runtime = substream->runtime;
566         struct snd_ca0106_pcm *epcm = runtime->private_data;
567 	chip->playback_channels[epcm->channel_id].use = 0;
568 
569 	restore_spdif_bits(chip, epcm->channel_id);
570 
571 	if (chip->details->spi_dac && epcm->channel_id != PCM_FRONT_CHANNEL) {
572 		const int reg = spi_dacd_reg[epcm->channel_id];
573 
574 		/* Power down DAC */
575 		chip->spi_dac_reg[reg] |= spi_dacd_bit[epcm->channel_id];
576 		snd_ca0106_spi_write(chip, chip->spi_dac_reg[reg]);
577 	}
578 	/* FIXME: maybe zero others */
579 	return 0;
580 }
581 
582 static int snd_ca0106_pcm_open_playback_front(struct snd_pcm_substream *substream)
583 {
584 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
585 }
586 
587 static int snd_ca0106_pcm_open_playback_center_lfe(struct snd_pcm_substream *substream)
588 {
589 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_CENTER_LFE_CHANNEL);
590 }
591 
592 static int snd_ca0106_pcm_open_playback_unknown(struct snd_pcm_substream *substream)
593 {
594 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_UNKNOWN_CHANNEL);
595 }
596 
597 static int snd_ca0106_pcm_open_playback_rear(struct snd_pcm_substream *substream)
598 {
599 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_REAR_CHANNEL);
600 }
601 
602 /* open_capture callback */
603 static int snd_ca0106_pcm_open_capture_channel(struct snd_pcm_substream *substream,
604 					       int channel_id)
605 {
606 	struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
607         struct snd_ca0106_channel *channel = &(chip->capture_channels[channel_id]);
608 	struct snd_ca0106_pcm *epcm;
609 	struct snd_pcm_runtime *runtime = substream->runtime;
610 	int err;
611 
612 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
613 	if (epcm == NULL) {
614 		snd_printk(KERN_ERR "open_capture_channel: failed epcm alloc\n");
615 		return -ENOMEM;
616         }
617 	epcm->emu = chip;
618 	epcm->substream = substream;
619         epcm->channel_id=channel_id;
620 
621 	runtime->private_data = epcm;
622 	runtime->private_free = snd_ca0106_pcm_free_substream;
623 
624 	runtime->hw = snd_ca0106_capture_hw;
625 
626         channel->emu = chip;
627         channel->number = channel_id;
628 
629 	channel->use = 1;
630 	/*
631         printk(KERN_DEBUG "open:channel_id=%d, chip=%p, channel=%p\n",
632 	       channel_id, chip, channel);
633 	*/
634         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
635         channel->epcm = epcm;
636 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
637                 return err;
638 	//snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_capture_period_sizes);
639 	if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
640                 return err;
641 	return 0;
642 }
643 
644 /* close callback */
645 static int snd_ca0106_pcm_close_capture(struct snd_pcm_substream *substream)
646 {
647 	struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
648 	struct snd_pcm_runtime *runtime = substream->runtime;
649         struct snd_ca0106_pcm *epcm = runtime->private_data;
650 	chip->capture_channels[epcm->channel_id].use = 0;
651 	/* FIXME: maybe zero others */
652 	return 0;
653 }
654 
655 static int snd_ca0106_pcm_open_0_capture(struct snd_pcm_substream *substream)
656 {
657 	return snd_ca0106_pcm_open_capture_channel(substream, 0);
658 }
659 
660 static int snd_ca0106_pcm_open_1_capture(struct snd_pcm_substream *substream)
661 {
662 	return snd_ca0106_pcm_open_capture_channel(substream, 1);
663 }
664 
665 static int snd_ca0106_pcm_open_2_capture(struct snd_pcm_substream *substream)
666 {
667 	return snd_ca0106_pcm_open_capture_channel(substream, 2);
668 }
669 
670 static int snd_ca0106_pcm_open_3_capture(struct snd_pcm_substream *substream)
671 {
672 	return snd_ca0106_pcm_open_capture_channel(substream, 3);
673 }
674 
675 /* hw_params callback */
676 static int snd_ca0106_pcm_hw_params_playback(struct snd_pcm_substream *substream,
677 				      struct snd_pcm_hw_params *hw_params)
678 {
679 	return snd_pcm_lib_malloc_pages(substream,
680 					params_buffer_bytes(hw_params));
681 }
682 
683 /* hw_free callback */
684 static int snd_ca0106_pcm_hw_free_playback(struct snd_pcm_substream *substream)
685 {
686 	return snd_pcm_lib_free_pages(substream);
687 }
688 
689 /* hw_params callback */
690 static int snd_ca0106_pcm_hw_params_capture(struct snd_pcm_substream *substream,
691 				      struct snd_pcm_hw_params *hw_params)
692 {
693 	return snd_pcm_lib_malloc_pages(substream,
694 					params_buffer_bytes(hw_params));
695 }
696 
697 /* hw_free callback */
698 static int snd_ca0106_pcm_hw_free_capture(struct snd_pcm_substream *substream)
699 {
700 	return snd_pcm_lib_free_pages(substream);
701 }
702 
703 /* prepare playback callback */
704 static int snd_ca0106_pcm_prepare_playback(struct snd_pcm_substream *substream)
705 {
706 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
707 	struct snd_pcm_runtime *runtime = substream->runtime;
708 	struct snd_ca0106_pcm *epcm = runtime->private_data;
709 	int channel = epcm->channel_id;
710 	u32 *table_base = (u32 *)(emu->buffer.area+(8*16*channel));
711 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
712 	u32 hcfg_mask = HCFG_PLAYBACK_S32_LE;
713 	u32 hcfg_set = 0x00000000;
714 	u32 hcfg;
715 	u32 reg40_mask = 0x30000 << (channel<<1);
716 	u32 reg40_set = 0;
717 	u32 reg40;
718 	/* FIXME: Depending on mixer selection of SPDIF out or not, select the spdif rate or the DAC rate. */
719 	u32 reg71_mask = 0x03030000 ; /* Global. Set SPDIF rate. We only support 44100 to spdif, not to DAC. */
720 	u32 reg71_set = 0;
721 	u32 reg71;
722 	int i;
723 
724 #if 0 /* debug */
725 	snd_printk(KERN_DEBUG
726 		   "prepare:channel_number=%d, rate=%d, format=0x%x, "
727 		   "channels=%d, buffer_size=%ld, period_size=%ld, "
728 		   "periods=%u, frames_to_bytes=%d\n",
729 		   channel, runtime->rate, runtime->format,
730 		   runtime->channels, runtime->buffer_size,
731 		   runtime->period_size, runtime->periods,
732 		   frames_to_bytes(runtime, 1));
733 	snd_printk(KERN_DEBUG "dma_addr=%x, dma_area=%p, table_base=%p\n",
734 		   runtime->dma_addr, runtime->dma_area, table_base);
735 	snd_printk(KERN_DEBUG "dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
736 		   emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
737 #endif /* debug */
738 	/* Rate can be set per channel. */
739 	/* reg40 control host to fifo */
740 	/* reg71 controls DAC rate. */
741 	switch (runtime->rate) {
742 	case 44100:
743 		reg40_set = 0x10000 << (channel<<1);
744 		reg71_set = 0x01010000;
745 		break;
746         case 48000:
747 		reg40_set = 0;
748 		reg71_set = 0;
749 		break;
750 	case 96000:
751 		reg40_set = 0x20000 << (channel<<1);
752 		reg71_set = 0x02020000;
753 		break;
754 	case 192000:
755 		reg40_set = 0x30000 << (channel<<1);
756 		reg71_set = 0x03030000;
757 		break;
758 	default:
759 		reg40_set = 0;
760 		reg71_set = 0;
761 		break;
762 	}
763 	/* Format is a global setting */
764 	/* FIXME: Only let the first channel accessed set this. */
765 	switch (runtime->format) {
766 	case SNDRV_PCM_FORMAT_S16_LE:
767 		hcfg_set = 0;
768 		break;
769 	case SNDRV_PCM_FORMAT_S32_LE:
770 		hcfg_set = HCFG_PLAYBACK_S32_LE;
771 		break;
772 	default:
773 		hcfg_set = 0;
774 		break;
775 	}
776 	hcfg = inl(emu->port + HCFG) ;
777 	hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
778 	outl(hcfg, emu->port + HCFG);
779 	reg40 = snd_ca0106_ptr_read(emu, 0x40, 0);
780 	reg40 = (reg40 & ~reg40_mask) | reg40_set;
781 	snd_ca0106_ptr_write(emu, 0x40, 0, reg40);
782 	reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
783 	reg71 = (reg71 & ~reg71_mask) | reg71_set;
784 	snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
785 
786 	/* FIXME: Check emu->buffer.size before actually writing to it. */
787         for(i=0; i < runtime->periods; i++) {
788 		table_base[i*2] = runtime->dma_addr + (i * period_size_bytes);
789 		table_base[i*2+1] = period_size_bytes << 16;
790 	}
791 
792 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_ADDR, channel, emu->buffer.addr+(8*16*channel));
793 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
794 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_PTR, channel, 0);
795 	snd_ca0106_ptr_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
796 	snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
797 	/* FIXME  test what 0 bytes does. */
798 	snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
799 	snd_ca0106_ptr_write(emu, PLAYBACK_POINTER, channel, 0);
800 	snd_ca0106_ptr_write(emu, 0x07, channel, 0x0);
801 	snd_ca0106_ptr_write(emu, 0x08, channel, 0);
802         snd_ca0106_ptr_write(emu, PLAYBACK_MUTE, 0x0, 0x0); /* Unmute output */
803 #if 0
804 	snd_ca0106_ptr_write(emu, SPCS0, 0,
805 			       SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
806 			       SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
807 			       SPCS_GENERATIONSTATUS | 0x00001200 |
808 			       0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT );
809 #endif
810 
811 	return 0;
812 }
813 
814 /* prepare capture callback */
815 static int snd_ca0106_pcm_prepare_capture(struct snd_pcm_substream *substream)
816 {
817 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
818 	struct snd_pcm_runtime *runtime = substream->runtime;
819 	struct snd_ca0106_pcm *epcm = runtime->private_data;
820 	int channel = epcm->channel_id;
821 	u32 hcfg_mask = HCFG_CAPTURE_S32_LE;
822 	u32 hcfg_set = 0x00000000;
823 	u32 hcfg;
824 	u32 over_sampling=0x2;
825 	u32 reg71_mask = 0x0000c000 ; /* Global. Set ADC rate. */
826 	u32 reg71_set = 0;
827 	u32 reg71;
828 
829 #if 0 /* debug */
830 	snd_printk(KERN_DEBUG
831 		   "prepare:channel_number=%d, rate=%d, format=0x%x, "
832 		   "channels=%d, buffer_size=%ld, period_size=%ld, "
833 		   "periods=%u, frames_to_bytes=%d\n",
834 		   channel, runtime->rate, runtime->format,
835 		   runtime->channels, runtime->buffer_size,
836 		   runtime->period_size, runtime->periods,
837 		   frames_to_bytes(runtime, 1));
838         snd_printk(KERN_DEBUG "dma_addr=%x, dma_area=%p, table_base=%p\n",
839 		   runtime->dma_addr, runtime->dma_area, table_base);
840 	snd_printk(KERN_DEBUG "dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
841 		   emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
842 #endif /* debug */
843 	/* reg71 controls ADC rate. */
844 	switch (runtime->rate) {
845 	case 44100:
846 		reg71_set = 0x00004000;
847 		break;
848         case 48000:
849 		reg71_set = 0;
850 		break;
851 	case 96000:
852 		reg71_set = 0x00008000;
853 		over_sampling=0xa;
854 		break;
855 	case 192000:
856 		reg71_set = 0x0000c000;
857 		over_sampling=0xa;
858 		break;
859 	default:
860 		reg71_set = 0;
861 		break;
862 	}
863 	/* Format is a global setting */
864 	/* FIXME: Only let the first channel accessed set this. */
865 	switch (runtime->format) {
866 	case SNDRV_PCM_FORMAT_S16_LE:
867 		hcfg_set = 0;
868 		break;
869 	case SNDRV_PCM_FORMAT_S32_LE:
870 		hcfg_set = HCFG_CAPTURE_S32_LE;
871 		break;
872 	default:
873 		hcfg_set = 0;
874 		break;
875 	}
876 	hcfg = inl(emu->port + HCFG) ;
877 	hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
878 	outl(hcfg, emu->port + HCFG);
879 	reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
880 	reg71 = (reg71 & ~reg71_mask) | reg71_set;
881 	snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
882         if (emu->details->i2c_adc == 1) { /* The SB0410 and SB0413 use I2C to control ADC. */
883 	        snd_ca0106_i2c_write(emu, ADC_MASTER, over_sampling); /* Adjust the over sampler to better suit the capture rate. */
884 	}
885 
886 
887 	/*
888 	printk(KERN_DEBUG
889 	       "prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, "
890 	       "buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",
891 	       channel, runtime->rate, runtime->format, runtime->channels,
892 	       runtime->buffer_size, runtime->period_size,
893 	       frames_to_bytes(runtime, 1));
894 	*/
895 	snd_ca0106_ptr_write(emu, 0x13, channel, 0);
896 	snd_ca0106_ptr_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
897 	snd_ca0106_ptr_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
898 	snd_ca0106_ptr_write(emu, CAPTURE_POINTER, channel, 0);
899 
900 	return 0;
901 }
902 
903 /* trigger_playback callback */
904 static int snd_ca0106_pcm_trigger_playback(struct snd_pcm_substream *substream,
905 				    int cmd)
906 {
907 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
908 	struct snd_pcm_runtime *runtime;
909 	struct snd_ca0106_pcm *epcm;
910 	int channel;
911 	int result = 0;
912         struct snd_pcm_substream *s;
913 	u32 basic = 0;
914 	u32 extended = 0;
915 	u32 bits;
916 	int running = 0;
917 
918 	switch (cmd) {
919 	case SNDRV_PCM_TRIGGER_START:
920 	case SNDRV_PCM_TRIGGER_RESUME:
921 		running = 1;
922 		break;
923 	case SNDRV_PCM_TRIGGER_STOP:
924 	case SNDRV_PCM_TRIGGER_SUSPEND:
925 	default:
926 		running = 0;
927 		break;
928 	}
929         snd_pcm_group_for_each_entry(s, substream) {
930 		if (snd_pcm_substream_chip(s) != emu ||
931 		    s->stream != SNDRV_PCM_STREAM_PLAYBACK)
932 			continue;
933 		runtime = s->runtime;
934 		epcm = runtime->private_data;
935 		channel = epcm->channel_id;
936 		/* snd_printk(KERN_DEBUG "channel=%d\n", channel); */
937 		epcm->running = running;
938 		basic |= (0x1 << channel);
939 		extended |= (0x10 << channel);
940                 snd_pcm_trigger_done(s, substream);
941         }
942 	/* snd_printk(KERN_DEBUG "basic=0x%x, extended=0x%x\n",basic, extended); */
943 
944 	switch (cmd) {
945 	case SNDRV_PCM_TRIGGER_START:
946 	case SNDRV_PCM_TRIGGER_RESUME:
947 		bits = snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0);
948 		bits |= extended;
949 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, bits);
950 		bits = snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0);
951 		bits |= basic;
952 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, bits);
953 		break;
954 	case SNDRV_PCM_TRIGGER_STOP:
955 	case SNDRV_PCM_TRIGGER_SUSPEND:
956 		bits = snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0);
957 		bits &= ~basic;
958 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, bits);
959 		bits = snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0);
960 		bits &= ~extended;
961 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, bits);
962 		break;
963 	default:
964 		result = -EINVAL;
965 		break;
966 	}
967 	return result;
968 }
969 
970 /* trigger_capture callback */
971 static int snd_ca0106_pcm_trigger_capture(struct snd_pcm_substream *substream,
972 				    int cmd)
973 {
974 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
975 	struct snd_pcm_runtime *runtime = substream->runtime;
976 	struct snd_ca0106_pcm *epcm = runtime->private_data;
977 	int channel = epcm->channel_id;
978 	int result = 0;
979 
980 	switch (cmd) {
981 	case SNDRV_PCM_TRIGGER_START:
982 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
983 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
984 		epcm->running = 1;
985 		break;
986 	case SNDRV_PCM_TRIGGER_STOP:
987 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
988 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
989 		epcm->running = 0;
990 		break;
991 	default:
992 		result = -EINVAL;
993 		break;
994 	}
995 	return result;
996 }
997 
998 /* pointer_playback callback */
999 static snd_pcm_uframes_t
1000 snd_ca0106_pcm_pointer_playback(struct snd_pcm_substream *substream)
1001 {
1002 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1003 	struct snd_pcm_runtime *runtime = substream->runtime;
1004 	struct snd_ca0106_pcm *epcm = runtime->private_data;
1005 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
1006 	int channel = epcm->channel_id;
1007 
1008 	if (!epcm->running)
1009 		return 0;
1010 
1011 	ptr3 = snd_ca0106_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
1012 	ptr1 = snd_ca0106_ptr_read(emu, PLAYBACK_POINTER, channel);
1013 	ptr4 = snd_ca0106_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
1014 	if (ptr3 != ptr4) ptr1 = snd_ca0106_ptr_read(emu, PLAYBACK_POINTER, channel);
1015 	ptr2 = bytes_to_frames(runtime, ptr1);
1016 	ptr2+= (ptr4 >> 3) * runtime->period_size;
1017 	ptr=ptr2;
1018         if (ptr >= runtime->buffer_size)
1019 		ptr -= runtime->buffer_size;
1020 	/*
1021 	printk(KERN_DEBUG "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
1022 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
1023 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
1024 	       (int)runtime->period_size, (int)runtime->frame_bits,
1025 	       (int)runtime->rate);
1026 	*/
1027 	return ptr;
1028 }
1029 
1030 /* pointer_capture callback */
1031 static snd_pcm_uframes_t
1032 snd_ca0106_pcm_pointer_capture(struct snd_pcm_substream *substream)
1033 {
1034 	struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1035 	struct snd_pcm_runtime *runtime = substream->runtime;
1036 	struct snd_ca0106_pcm *epcm = runtime->private_data;
1037 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
1038 	int channel = channel=epcm->channel_id;
1039 
1040 	if (!epcm->running)
1041 		return 0;
1042 
1043 	ptr1 = snd_ca0106_ptr_read(emu, CAPTURE_POINTER, channel);
1044 	ptr2 = bytes_to_frames(runtime, ptr1);
1045 	ptr=ptr2;
1046         if (ptr >= runtime->buffer_size)
1047 		ptr -= runtime->buffer_size;
1048 	/*
1049 	printk(KERN_DEBUG "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
1050 	       "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
1051 	       ptr1, ptr2, ptr, (int)runtime->buffer_size,
1052 	       (int)runtime->period_size, (int)runtime->frame_bits,
1053 	       (int)runtime->rate);
1054 	*/
1055 	return ptr;
1056 }
1057 
1058 /* operators */
1059 static struct snd_pcm_ops snd_ca0106_playback_front_ops = {
1060 	.open =        snd_ca0106_pcm_open_playback_front,
1061 	.close =       snd_ca0106_pcm_close_playback,
1062 	.ioctl =       snd_pcm_lib_ioctl,
1063 	.hw_params =   snd_ca0106_pcm_hw_params_playback,
1064 	.hw_free =     snd_ca0106_pcm_hw_free_playback,
1065 	.prepare =     snd_ca0106_pcm_prepare_playback,
1066 	.trigger =     snd_ca0106_pcm_trigger_playback,
1067 	.pointer =     snd_ca0106_pcm_pointer_playback,
1068 };
1069 
1070 static struct snd_pcm_ops snd_ca0106_capture_0_ops = {
1071 	.open =        snd_ca0106_pcm_open_0_capture,
1072 	.close =       snd_ca0106_pcm_close_capture,
1073 	.ioctl =       snd_pcm_lib_ioctl,
1074 	.hw_params =   snd_ca0106_pcm_hw_params_capture,
1075 	.hw_free =     snd_ca0106_pcm_hw_free_capture,
1076 	.prepare =     snd_ca0106_pcm_prepare_capture,
1077 	.trigger =     snd_ca0106_pcm_trigger_capture,
1078 	.pointer =     snd_ca0106_pcm_pointer_capture,
1079 };
1080 
1081 static struct snd_pcm_ops snd_ca0106_capture_1_ops = {
1082 	.open =        snd_ca0106_pcm_open_1_capture,
1083 	.close =       snd_ca0106_pcm_close_capture,
1084 	.ioctl =       snd_pcm_lib_ioctl,
1085 	.hw_params =   snd_ca0106_pcm_hw_params_capture,
1086 	.hw_free =     snd_ca0106_pcm_hw_free_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 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 	.ioctl =       snd_pcm_lib_ioctl,
1096 	.hw_params =   snd_ca0106_pcm_hw_params_capture,
1097 	.hw_free =     snd_ca0106_pcm_hw_free_capture,
1098 	.prepare =     snd_ca0106_pcm_prepare_capture,
1099 	.trigger =     snd_ca0106_pcm_trigger_capture,
1100 	.pointer =     snd_ca0106_pcm_pointer_capture,
1101 };
1102 
1103 static struct snd_pcm_ops snd_ca0106_capture_3_ops = {
1104 	.open =        snd_ca0106_pcm_open_3_capture,
1105 	.close =       snd_ca0106_pcm_close_capture,
1106 	.ioctl =       snd_pcm_lib_ioctl,
1107 	.hw_params =   snd_ca0106_pcm_hw_params_capture,
1108 	.hw_free =     snd_ca0106_pcm_hw_free_capture,
1109 	.prepare =     snd_ca0106_pcm_prepare_capture,
1110 	.trigger =     snd_ca0106_pcm_trigger_capture,
1111 	.pointer =     snd_ca0106_pcm_pointer_capture,
1112 };
1113 
1114 static struct snd_pcm_ops snd_ca0106_playback_center_lfe_ops = {
1115         .open =         snd_ca0106_pcm_open_playback_center_lfe,
1116         .close =        snd_ca0106_pcm_close_playback,
1117         .ioctl =        snd_pcm_lib_ioctl,
1118         .hw_params =    snd_ca0106_pcm_hw_params_playback,
1119         .hw_free =      snd_ca0106_pcm_hw_free_playback,
1120         .prepare =      snd_ca0106_pcm_prepare_playback,
1121         .trigger =      snd_ca0106_pcm_trigger_playback,
1122         .pointer =      snd_ca0106_pcm_pointer_playback,
1123 };
1124 
1125 static struct snd_pcm_ops snd_ca0106_playback_unknown_ops = {
1126         .open =         snd_ca0106_pcm_open_playback_unknown,
1127         .close =        snd_ca0106_pcm_close_playback,
1128         .ioctl =        snd_pcm_lib_ioctl,
1129         .hw_params =    snd_ca0106_pcm_hw_params_playback,
1130         .hw_free =      snd_ca0106_pcm_hw_free_playback,
1131         .prepare =      snd_ca0106_pcm_prepare_playback,
1132         .trigger =      snd_ca0106_pcm_trigger_playback,
1133         .pointer =      snd_ca0106_pcm_pointer_playback,
1134 };
1135 
1136 static struct snd_pcm_ops snd_ca0106_playback_rear_ops = {
1137         .open =         snd_ca0106_pcm_open_playback_rear,
1138         .close =        snd_ca0106_pcm_close_playback,
1139         .ioctl =        snd_pcm_lib_ioctl,
1140         .hw_params =    snd_ca0106_pcm_hw_params_playback,
1141 		.hw_free =      snd_ca0106_pcm_hw_free_playback,
1142         .prepare =      snd_ca0106_pcm_prepare_playback,
1143         .trigger =      snd_ca0106_pcm_trigger_playback,
1144         .pointer =      snd_ca0106_pcm_pointer_playback,
1145 };
1146 
1147 
1148 static unsigned short snd_ca0106_ac97_read(struct snd_ac97 *ac97,
1149 					     unsigned short reg)
1150 {
1151 	struct snd_ca0106 *emu = ac97->private_data;
1152 	unsigned long flags;
1153 	unsigned short val;
1154 
1155 	spin_lock_irqsave(&emu->emu_lock, flags);
1156 	outb(reg, emu->port + AC97ADDRESS);
1157 	val = inw(emu->port + AC97DATA);
1158 	spin_unlock_irqrestore(&emu->emu_lock, flags);
1159 	return val;
1160 }
1161 
1162 static void snd_ca0106_ac97_write(struct snd_ac97 *ac97,
1163 				    unsigned short reg, unsigned short val)
1164 {
1165 	struct snd_ca0106 *emu = ac97->private_data;
1166 	unsigned long flags;
1167 
1168 	spin_lock_irqsave(&emu->emu_lock, flags);
1169 	outb(reg, emu->port + AC97ADDRESS);
1170 	outw(val, emu->port + AC97DATA);
1171 	spin_unlock_irqrestore(&emu->emu_lock, flags);
1172 }
1173 
1174 static int snd_ca0106_ac97(struct snd_ca0106 *chip)
1175 {
1176 	struct snd_ac97_bus *pbus;
1177 	struct snd_ac97_template ac97;
1178 	int err;
1179 	static struct snd_ac97_bus_ops ops = {
1180 		.write = snd_ca0106_ac97_write,
1181 		.read = snd_ca0106_ac97_read,
1182 	};
1183 
1184 	if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
1185 		return err;
1186 	pbus->no_vra = 1; /* we don't need VRA */
1187 
1188 	memset(&ac97, 0, sizeof(ac97));
1189 	ac97.private_data = chip;
1190 	ac97.scaps = AC97_SCAP_NO_SPDIF;
1191 	return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
1192 }
1193 
1194 static void ca0106_stop_chip(struct snd_ca0106 *chip);
1195 
1196 static int snd_ca0106_free(struct snd_ca0106 *chip)
1197 {
1198 	if (chip->res_port != NULL) {
1199 		/* avoid access to already used hardware */
1200 		ca0106_stop_chip(chip);
1201 	}
1202 	if (chip->irq >= 0)
1203 		free_irq(chip->irq, chip);
1204 	// release the data
1205 #if 1
1206 	if (chip->buffer.area)
1207 		snd_dma_free_pages(&chip->buffer);
1208 #endif
1209 
1210 	// release the i/o port
1211 	release_and_free_resource(chip->res_port);
1212 
1213 	pci_disable_device(chip->pci);
1214 	kfree(chip);
1215 	return 0;
1216 }
1217 
1218 static int snd_ca0106_dev_free(struct snd_device *device)
1219 {
1220 	struct snd_ca0106 *chip = device->device_data;
1221 	return snd_ca0106_free(chip);
1222 }
1223 
1224 static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id)
1225 {
1226 	unsigned int status;
1227 
1228 	struct snd_ca0106 *chip = dev_id;
1229 	int i;
1230 	int mask;
1231         unsigned int stat76;
1232 	struct snd_ca0106_channel *pchannel;
1233 
1234 	status = inl(chip->port + IPR);
1235 	if (! status)
1236 		return IRQ_NONE;
1237 
1238         stat76 = snd_ca0106_ptr_read(chip, EXTENDED_INT, 0);
1239 	/*
1240 	snd_printk(KERN_DEBUG "interrupt status = 0x%08x, stat76=0x%08x\n",
1241 		   status, stat76);
1242 	snd_printk(KERN_DEBUG "ptr=0x%08x\n",
1243 		   snd_ca0106_ptr_read(chip, PLAYBACK_POINTER, 0));
1244 	*/
1245         mask = 0x11; /* 0x1 for one half, 0x10 for the other half period. */
1246 	for(i = 0; i < 4; i++) {
1247 		pchannel = &(chip->playback_channels[i]);
1248 		if (stat76 & mask) {
1249 /* FIXME: Select the correct substream for period elapsed */
1250 			if(pchannel->use) {
1251 				snd_pcm_period_elapsed(pchannel->epcm->substream);
1252 				//printk(KERN_INFO "interrupt [%d] used\n", i);
1253                         }
1254 		}
1255 	        //printk(KERN_INFO "channel=%p\n",pchannel);
1256 	        //printk(KERN_INFO "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1257 		mask <<= 1;
1258 	}
1259         mask = 0x110000; /* 0x1 for one half, 0x10 for the other half period. */
1260 	for(i = 0; i < 4; i++) {
1261 		pchannel = &(chip->capture_channels[i]);
1262 		if (stat76 & mask) {
1263 /* FIXME: Select the correct substream for period elapsed */
1264 			if(pchannel->use) {
1265 				snd_pcm_period_elapsed(pchannel->epcm->substream);
1266 				//printk(KERN_INFO "interrupt [%d] used\n", i);
1267                         }
1268 		}
1269 	        //printk(KERN_INFO "channel=%p\n",pchannel);
1270 	        //printk(KERN_INFO "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1271 		mask <<= 1;
1272 	}
1273 
1274         snd_ca0106_ptr_write(chip, EXTENDED_INT, 0, stat76);
1275 
1276 	if (chip->midi.dev_id &&
1277 	    (status & (chip->midi.ipr_tx|chip->midi.ipr_rx))) {
1278 		if (chip->midi.interrupt)
1279 			chip->midi.interrupt(&chip->midi, status);
1280 		else
1281 			chip->midi.interrupt_disable(&chip->midi, chip->midi.tx_enable | chip->midi.rx_enable);
1282 	}
1283 
1284 	// acknowledge the interrupt if necessary
1285 	outl(status, chip->port+IPR);
1286 
1287 	return IRQ_HANDLED;
1288 }
1289 
1290 static int __devinit snd_ca0106_pcm(struct snd_ca0106 *emu, int device)
1291 {
1292 	struct snd_pcm *pcm;
1293 	struct snd_pcm_substream *substream;
1294 	int err;
1295 
1296 	err = snd_pcm_new(emu->card, "ca0106", device, 1, 1, &pcm);
1297 	if (err < 0)
1298 		return err;
1299 
1300 	pcm->private_data = emu;
1301 
1302 	switch (device) {
1303 	case 0:
1304 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_front_ops);
1305 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_0_ops);
1306           break;
1307 	case 1:
1308 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_rear_ops);
1309 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_1_ops);
1310           break;
1311 	case 2:
1312 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_center_lfe_ops);
1313 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_2_ops);
1314           break;
1315 	case 3:
1316 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_unknown_ops);
1317 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_3_ops);
1318           break;
1319         }
1320 
1321 	pcm->info_flags = 0;
1322 	strcpy(pcm->name, "CA0106");
1323 
1324 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
1325 	    substream;
1326 	    substream = substream->next) {
1327 		if ((err = snd_pcm_lib_preallocate_pages(substream,
1328 							 SNDRV_DMA_TYPE_DEV,
1329 							 snd_dma_pci_data(emu->pci),
1330 							 64*1024, 64*1024)) < 0) /* FIXME: 32*1024 for sound buffer, between 32and64 for Periods table. */
1331 			return err;
1332 	}
1333 
1334 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
1335 	      substream;
1336 	      substream = substream->next) {
1337  		if ((err = snd_pcm_lib_preallocate_pages(substream,
1338 	                                           SNDRV_DMA_TYPE_DEV,
1339 	                                           snd_dma_pci_data(emu->pci),
1340 	                                           64*1024, 64*1024)) < 0)
1341 			return err;
1342 	}
1343 
1344 	emu->pcm[device] = pcm;
1345 
1346 	return 0;
1347 }
1348 
1349 #define SPI_REG(reg, value)	(((reg) << SPI_REG_SHIFT) | (value))
1350 static unsigned int spi_dac_init[] = {
1351 	SPI_REG(SPI_LDA1_REG,	SPI_DA_BIT_0dB), /* 0dB dig. attenuation */
1352 	SPI_REG(SPI_RDA1_REG,	SPI_DA_BIT_0dB),
1353 	SPI_REG(SPI_PL_REG,	SPI_PL_BIT_L_L | SPI_PL_BIT_R_R | SPI_IZD_BIT),
1354 	SPI_REG(SPI_FMT_REG,	SPI_FMT_BIT_I2S | SPI_IWL_BIT_24),
1355 	SPI_REG(SPI_LDA2_REG,	SPI_DA_BIT_0dB),
1356 	SPI_REG(SPI_RDA2_REG,	SPI_DA_BIT_0dB),
1357 	SPI_REG(SPI_LDA3_REG,	SPI_DA_BIT_0dB),
1358 	SPI_REG(SPI_RDA3_REG,	SPI_DA_BIT_0dB),
1359 	SPI_REG(SPI_MASTDA_REG,	SPI_DA_BIT_0dB),
1360 	SPI_REG(9,		0x00),
1361 	SPI_REG(SPI_MS_REG,	SPI_DACD0_BIT | SPI_DACD1_BIT | SPI_DACD2_BIT),
1362 	SPI_REG(12,		0x00),
1363 	SPI_REG(SPI_LDA4_REG,	SPI_DA_BIT_0dB),
1364 	SPI_REG(SPI_RDA4_REG,	SPI_DA_BIT_0dB | SPI_DA_BIT_UPDATE),
1365 	SPI_REG(SPI_DACD4_REG,	0x00),
1366 };
1367 
1368 static unsigned int i2c_adc_init[][2] = {
1369 	{ 0x17, 0x00 }, /* Reset */
1370 	{ 0x07, 0x00 }, /* Timeout */
1371 	{ 0x0b, 0x22 },  /* Interface control */
1372 	{ 0x0c, 0x22 },  /* Master mode control */
1373 	{ 0x0d, 0x08 },  /* Powerdown control */
1374 	{ 0x0e, 0xcf },  /* Attenuation Left  0x01 = -103dB, 0xff = 24dB */
1375 	{ 0x0f, 0xcf },  /* Attenuation Right 0.5dB steps */
1376 	{ 0x10, 0x7b },  /* ALC Control 1 */
1377 	{ 0x11, 0x00 },  /* ALC Control 2 */
1378 	{ 0x12, 0x32 },  /* ALC Control 3 */
1379 	{ 0x13, 0x00 },  /* Noise gate control */
1380 	{ 0x14, 0xa6 },  /* Limiter control */
1381 	{ 0x15, ADC_MUX_LINEIN },  /* ADC Mixer control */
1382 };
1383 
1384 static void ca0106_init_chip(struct snd_ca0106 *chip, int resume)
1385 {
1386 	int ch;
1387 	unsigned int def_bits;
1388 
1389 	outl(0, chip->port + INTE);
1390 
1391 	/*
1392 	 *  Init to 0x02109204 :
1393 	 *  Clock accuracy    = 0     (1000ppm)
1394 	 *  Sample Rate       = 2     (48kHz)
1395 	 *  Audio Channel     = 1     (Left of 2)
1396 	 *  Source Number     = 0     (Unspecified)
1397 	 *  Generation Status = 1     (Original for Cat Code 12)
1398 	 *  Cat Code          = 12    (Digital Signal Mixer)
1399 	 *  Mode              = 0     (Mode 0)
1400 	 *  Emphasis          = 0     (None)
1401 	 *  CP                = 1     (Copyright unasserted)
1402 	 *  AN                = 0     (Audio data)
1403 	 *  P                 = 0     (Consumer)
1404 	 */
1405 	def_bits =
1406 		SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1407 		SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1408 		SPCS_GENERATIONSTATUS | 0x00001200 |
1409 		0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT;
1410 	if (!resume) {
1411 		chip->spdif_str_bits[0] = chip->spdif_bits[0] = def_bits;
1412 		chip->spdif_str_bits[1] = chip->spdif_bits[1] = def_bits;
1413 		chip->spdif_str_bits[2] = chip->spdif_bits[2] = def_bits;
1414 		chip->spdif_str_bits[3] = chip->spdif_bits[3] = def_bits;
1415 	}
1416 	/* Only SPCS1 has been tested */
1417 	snd_ca0106_ptr_write(chip, SPCS1, 0, chip->spdif_str_bits[1]);
1418 	snd_ca0106_ptr_write(chip, SPCS0, 0, chip->spdif_str_bits[0]);
1419 	snd_ca0106_ptr_write(chip, SPCS2, 0, chip->spdif_str_bits[2]);
1420 	snd_ca0106_ptr_write(chip, SPCS3, 0, chip->spdif_str_bits[3]);
1421 
1422         snd_ca0106_ptr_write(chip, PLAYBACK_MUTE, 0, 0x00fc0000);
1423         snd_ca0106_ptr_write(chip, CAPTURE_MUTE, 0, 0x00fc0000);
1424 
1425         /* Write 0x8000 to AC97_REC_GAIN to mute it. */
1426         outb(AC97_REC_GAIN, chip->port + AC97ADDRESS);
1427         outw(0x8000, chip->port + AC97DATA);
1428 #if 0 /* FIXME: what are these? */
1429 	snd_ca0106_ptr_write(chip, SPCS0, 0, 0x2108006);
1430 	snd_ca0106_ptr_write(chip, 0x42, 0, 0x2108006);
1431 	snd_ca0106_ptr_write(chip, 0x43, 0, 0x2108006);
1432 	snd_ca0106_ptr_write(chip, 0x44, 0, 0x2108006);
1433 #endif
1434 
1435 	/* OSS drivers set this. */
1436 	/* snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0xf0f003f); */
1437 
1438 	/* Analog or Digital output */
1439 	snd_ca0106_ptr_write(chip, SPDIF_SELECT1, 0, 0xf);
1440 	/* 0x0b000000 for digital, 0x000b0000 for analog, from win2000 drivers.
1441 	 * Use 0x000f0000 for surround71
1442 	 */
1443 	snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0x000f0000);
1444 
1445 	chip->spdif_enable = 0; /* Set digital SPDIF output off */
1446 	/*snd_ca0106_ptr_write(chip, 0x45, 0, 0);*/ /* Analogue out */
1447 	/*snd_ca0106_ptr_write(chip, 0x45, 0, 0xf00);*/ /* Digital out */
1448 
1449 	/* goes to 0x40c80000 when doing SPDIF IN/OUT */
1450 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 0, 0x40c81000);
1451 	/* (Mute) CAPTURE feedback into PLAYBACK volume.
1452 	 * Only lower 16 bits matter.
1453 	 */
1454 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 1, 0xffffffff);
1455 	/* SPDIF IN Volume */
1456 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 2, 0x30300000);
1457 	/* SPDIF IN Volume, 0x70 = (vol & 0x3f) | 0x40 */
1458 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 3, 0x00700000);
1459 
1460 	snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING1, 0, 0x32765410);
1461 	snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING2, 0, 0x76767676);
1462 	snd_ca0106_ptr_write(chip, CAPTURE_ROUTING1, 0, 0x32765410);
1463 	snd_ca0106_ptr_write(chip, CAPTURE_ROUTING2, 0, 0x76767676);
1464 
1465 	for (ch = 0; ch < 4; ch++) {
1466 		/* Only high 16 bits matter */
1467 		snd_ca0106_ptr_write(chip, CAPTURE_VOLUME1, ch, 0x30303030);
1468 		snd_ca0106_ptr_write(chip, CAPTURE_VOLUME2, ch, 0x30303030);
1469 #if 0 /* Mute */
1470 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0x40404040);
1471 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0x40404040);
1472 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0xffffffff);
1473 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0xffffffff);
1474 #endif
1475 	}
1476 	if (chip->details->i2c_adc == 1) {
1477 	        /* Select MIC, Line in, TAD in, AUX in */
1478 	        snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4);
1479 		/* Default to CAPTURE_SOURCE to i2s in */
1480 		if (!resume)
1481 			chip->capture_source = 3;
1482 	} else if (chip->details->ac97 == 1) {
1483 	        /* Default to AC97 in */
1484 	        snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x444400e4);
1485 		/* Default to CAPTURE_SOURCE to AC97 in */
1486 		if (!resume)
1487 			chip->capture_source = 4;
1488 	} else {
1489 	        /* Select MIC, Line in, TAD in, AUX in */
1490 	        snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4);
1491 		/* Default to Set CAPTURE_SOURCE to i2s in */
1492 		if (!resume)
1493 			chip->capture_source = 3;
1494 	}
1495 
1496 	if (chip->details->gpio_type == 2) {
1497 		/* The SB0438 use GPIO differently. */
1498 		/* FIXME: Still need to find out what the other GPIO bits do.
1499 		 * E.g. For digital spdif out.
1500 		 */
1501 		outl(0x0, chip->port+GPIO);
1502 		/* outl(0x00f0e000, chip->port+GPIO); */ /* Analog */
1503 		outl(0x005f5301, chip->port+GPIO); /* Analog */
1504 	} else if (chip->details->gpio_type == 1) {
1505 		/* The SB0410 and SB0413 use GPIO differently. */
1506 		/* FIXME: Still need to find out what the other GPIO bits do.
1507 		 * E.g. For digital spdif out.
1508 		 */
1509 		outl(0x0, chip->port+GPIO);
1510 		/* outl(0x00f0e000, chip->port+GPIO); */ /* Analog */
1511 		outl(0x005f5301, chip->port+GPIO); /* Analog */
1512 	} else {
1513 		outl(0x0, chip->port+GPIO);
1514 		outl(0x005f03a3, chip->port+GPIO); /* Analog */
1515 		/* outl(0x005f02a2, chip->port+GPIO); */ /* SPDIF */
1516 	}
1517 	snd_ca0106_intr_enable(chip, 0x105); /* Win2000 uses 0x1e0 */
1518 
1519 	/* outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG); */
1520 	/* 0x1000 causes AC3 to fails. Maybe it effects 24 bit output. */
1521 	/* outl(0x00001409, chip->port+HCFG); */
1522 	/* outl(0x00000009, chip->port+HCFG); */
1523 	/* AC97 2.0, Enable outputs. */
1524 	outl(HCFG_AC97 | HCFG_AUDIOENABLE, chip->port+HCFG);
1525 
1526 	if (chip->details->i2c_adc == 1) {
1527 		/* The SB0410 and SB0413 use I2C to control ADC. */
1528 		int size, n;
1529 
1530 		size = ARRAY_SIZE(i2c_adc_init);
1531 		/* snd_printk(KERN_DEBUG "I2C:array size=0x%x\n", size); */
1532 		for (n = 0; n < size; n++)
1533 			snd_ca0106_i2c_write(chip, i2c_adc_init[n][0],
1534 					     i2c_adc_init[n][1]);
1535 		for (n = 0; n < 4; n++) {
1536 			chip->i2c_capture_volume[n][0] = 0xcf;
1537 			chip->i2c_capture_volume[n][1] = 0xcf;
1538 		}
1539 		chip->i2c_capture_source = 2; /* Line in */
1540 		/* Enable Line-in capture. MIC in currently untested. */
1541 		/* snd_ca0106_i2c_write(chip, ADC_MUX, ADC_MUX_LINEIN); */
1542 	}
1543 
1544 	if (chip->details->spi_dac == 1) {
1545 		/* The SB0570 use SPI to control DAC. */
1546 		int size, n;
1547 
1548 		size = ARRAY_SIZE(spi_dac_init);
1549 		for (n = 0; n < size; n++) {
1550 			int reg = spi_dac_init[n] >> SPI_REG_SHIFT;
1551 
1552 			snd_ca0106_spi_write(chip, spi_dac_init[n]);
1553 			if (reg < ARRAY_SIZE(chip->spi_dac_reg))
1554 				chip->spi_dac_reg[reg] = spi_dac_init[n];
1555 		}
1556 	}
1557 }
1558 
1559 static void ca0106_stop_chip(struct snd_ca0106 *chip)
1560 {
1561 	/* disable interrupts */
1562 	snd_ca0106_ptr_write(chip, BASIC_INTERRUPT, 0, 0);
1563 	outl(0, chip->port + INTE);
1564 	snd_ca0106_ptr_write(chip, EXTENDED_INT_MASK, 0, 0);
1565 	udelay(1000);
1566 	/* disable audio */
1567 	/* outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG); */
1568 	outl(0, chip->port + HCFG);
1569 	/* FIXME: We need to stop and DMA transfers here.
1570 	 *        But as I am not sure how yet, we cannot from the dma pages.
1571 	 * So we can fix: snd-malloc: Memory leak?  pages not freed = 8
1572 	 */
1573 }
1574 
1575 static int __devinit snd_ca0106_create(int dev, struct snd_card *card,
1576 					 struct pci_dev *pci,
1577 					 struct snd_ca0106 **rchip)
1578 {
1579 	struct snd_ca0106 *chip;
1580 	struct snd_ca0106_details *c;
1581 	int err;
1582 	static struct snd_device_ops ops = {
1583 		.dev_free = snd_ca0106_dev_free,
1584 	};
1585 
1586 	*rchip = NULL;
1587 
1588 	err = pci_enable_device(pci);
1589 	if (err < 0)
1590 		return err;
1591 	if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 ||
1592 	    pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
1593 		printk(KERN_ERR "error to set 32bit mask DMA\n");
1594 		pci_disable_device(pci);
1595 		return -ENXIO;
1596 	}
1597 
1598 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1599 	if (chip == NULL) {
1600 		pci_disable_device(pci);
1601 		return -ENOMEM;
1602 	}
1603 
1604 	chip->card = card;
1605 	chip->pci = pci;
1606 	chip->irq = -1;
1607 
1608 	spin_lock_init(&chip->emu_lock);
1609 
1610 	chip->port = pci_resource_start(pci, 0);
1611 	chip->res_port = request_region(chip->port, 0x20, "snd_ca0106");
1612 	if (!chip->res_port) {
1613 		snd_ca0106_free(chip);
1614 		printk(KERN_ERR "cannot allocate the port\n");
1615 		return -EBUSY;
1616 	}
1617 
1618 	if (request_irq(pci->irq, snd_ca0106_interrupt,
1619 			IRQF_SHARED, "snd_ca0106", chip)) {
1620 		snd_ca0106_free(chip);
1621 		printk(KERN_ERR "cannot grab irq\n");
1622 		return -EBUSY;
1623 	}
1624 	chip->irq = pci->irq;
1625 
1626 	/* This stores the periods table. */
1627 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1628 				1024, &chip->buffer) < 0) {
1629 		snd_ca0106_free(chip);
1630 		return -ENOMEM;
1631 	}
1632 
1633 	pci_set_master(pci);
1634 	/* read serial */
1635 	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
1636 	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
1637 	printk(KERN_INFO "snd-ca0106: Model %04x Rev %08x Serial %08x\n",
1638 	       chip->model, pci->revision, chip->serial);
1639 	strcpy(card->driver, "CA0106");
1640 	strcpy(card->shortname, "CA0106");
1641 
1642 	for (c = ca0106_chip_details; c->serial; c++) {
1643 		if (subsystem[dev]) {
1644 			if (c->serial == subsystem[dev])
1645 				break;
1646 		} else if (c->serial == chip->serial)
1647 			break;
1648 	}
1649 	chip->details = c;
1650 	if (subsystem[dev]) {
1651 		printk(KERN_INFO "snd-ca0106: Sound card name=%s, "
1652 		       "subsystem=0x%x. Forced to subsystem=0x%x\n",
1653 		       c->name, chip->serial, subsystem[dev]);
1654 	}
1655 
1656 	sprintf(card->longname, "%s at 0x%lx irq %i",
1657 		c->name, chip->port, chip->irq);
1658 
1659 	ca0106_init_chip(chip, 0);
1660 
1661 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1662 	if (err < 0) {
1663 		snd_ca0106_free(chip);
1664 		return err;
1665 	}
1666 	*rchip = chip;
1667 	return 0;
1668 }
1669 
1670 
1671 static void ca0106_midi_interrupt_enable(struct snd_ca_midi *midi, int intr)
1672 {
1673 	snd_ca0106_intr_enable((struct snd_ca0106 *)(midi->dev_id), intr);
1674 }
1675 
1676 static void ca0106_midi_interrupt_disable(struct snd_ca_midi *midi, int intr)
1677 {
1678 	snd_ca0106_intr_disable((struct snd_ca0106 *)(midi->dev_id), intr);
1679 }
1680 
1681 static unsigned char ca0106_midi_read(struct snd_ca_midi *midi, int idx)
1682 {
1683 	return (unsigned char)snd_ca0106_ptr_read((struct snd_ca0106 *)(midi->dev_id),
1684 						  midi->port + idx, 0);
1685 }
1686 
1687 static void ca0106_midi_write(struct snd_ca_midi *midi, int data, int idx)
1688 {
1689 	snd_ca0106_ptr_write((struct snd_ca0106 *)(midi->dev_id), midi->port + idx, 0, data);
1690 }
1691 
1692 static struct snd_card *ca0106_dev_id_card(void *dev_id)
1693 {
1694 	return ((struct snd_ca0106 *)dev_id)->card;
1695 }
1696 
1697 static int ca0106_dev_id_port(void *dev_id)
1698 {
1699 	return ((struct snd_ca0106 *)dev_id)->port;
1700 }
1701 
1702 static int __devinit snd_ca0106_midi(struct snd_ca0106 *chip, unsigned int channel)
1703 {
1704 	struct snd_ca_midi *midi;
1705 	char *name;
1706 	int err;
1707 
1708 	if (channel == CA0106_MIDI_CHAN_B) {
1709 		name = "CA0106 MPU-401 (UART) B";
1710 		midi =  &chip->midi2;
1711 		midi->tx_enable = INTE_MIDI_TX_B;
1712 		midi->rx_enable = INTE_MIDI_RX_B;
1713 		midi->ipr_tx = IPR_MIDI_TX_B;
1714 		midi->ipr_rx = IPR_MIDI_RX_B;
1715 		midi->port = MIDI_UART_B_DATA;
1716 	} else {
1717 		name = "CA0106 MPU-401 (UART)";
1718 		midi =  &chip->midi;
1719 		midi->tx_enable = INTE_MIDI_TX_A;
1720 		midi->rx_enable = INTE_MIDI_TX_B;
1721 		midi->ipr_tx = IPR_MIDI_TX_A;
1722 		midi->ipr_rx = IPR_MIDI_RX_A;
1723 		midi->port = MIDI_UART_A_DATA;
1724 	}
1725 
1726 	midi->reset = CA0106_MPU401_RESET;
1727 	midi->enter_uart = CA0106_MPU401_ENTER_UART;
1728 	midi->ack = CA0106_MPU401_ACK;
1729 
1730 	midi->input_avail = CA0106_MIDI_INPUT_AVAIL;
1731 	midi->output_ready = CA0106_MIDI_OUTPUT_READY;
1732 
1733 	midi->channel = channel;
1734 
1735 	midi->interrupt_enable = ca0106_midi_interrupt_enable;
1736 	midi->interrupt_disable = ca0106_midi_interrupt_disable;
1737 
1738 	midi->read = ca0106_midi_read;
1739 	midi->write = ca0106_midi_write;
1740 
1741 	midi->get_dev_id_card = ca0106_dev_id_card;
1742 	midi->get_dev_id_port = ca0106_dev_id_port;
1743 
1744 	midi->dev_id = chip;
1745 
1746 	if ((err = ca_midi_init(chip, midi, 0, name)) < 0)
1747 		return err;
1748 
1749 	return 0;
1750 }
1751 
1752 
1753 static int __devinit snd_ca0106_probe(struct pci_dev *pci,
1754 					const struct pci_device_id *pci_id)
1755 {
1756 	static int dev;
1757 	struct snd_card *card;
1758 	struct snd_ca0106 *chip;
1759 	int i, err;
1760 
1761 	if (dev >= SNDRV_CARDS)
1762 		return -ENODEV;
1763 	if (!enable[dev]) {
1764 		dev++;
1765 		return -ENOENT;
1766 	}
1767 
1768 	err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
1769 	if (err < 0)
1770 		return err;
1771 
1772 	err = snd_ca0106_create(dev, card, pci, &chip);
1773 	if (err < 0)
1774 		goto error;
1775 	card->private_data = chip;
1776 
1777 	for (i = 0; i < 4; i++) {
1778 		err = snd_ca0106_pcm(chip, i);
1779 		if (err < 0)
1780 			goto error;
1781 	}
1782 
1783 	if (chip->details->ac97 == 1) {
1784 		/* The SB0410 and SB0413 do not have an AC97 chip. */
1785 		err = snd_ca0106_ac97(chip);
1786 		if (err < 0)
1787 			goto error;
1788 	}
1789 	err = snd_ca0106_mixer(chip);
1790 	if (err < 0)
1791 		goto error;
1792 
1793 	snd_printdd("ca0106: probe for MIDI channel A ...");
1794 	err = snd_ca0106_midi(chip, CA0106_MIDI_CHAN_A);
1795 	if (err < 0)
1796 		goto error;
1797 	snd_printdd(" done.\n");
1798 
1799 #ifdef CONFIG_PROC_FS
1800 	snd_ca0106_proc_init(chip);
1801 #endif
1802 
1803 	snd_card_set_dev(card, &pci->dev);
1804 
1805 	err = snd_card_register(card);
1806 	if (err < 0)
1807 		goto error;
1808 
1809 	pci_set_drvdata(pci, card);
1810 	dev++;
1811 	return 0;
1812 
1813  error:
1814 	snd_card_free(card);
1815 	return err;
1816 }
1817 
1818 static void __devexit snd_ca0106_remove(struct pci_dev *pci)
1819 {
1820 	snd_card_free(pci_get_drvdata(pci));
1821 	pci_set_drvdata(pci, NULL);
1822 }
1823 
1824 #ifdef CONFIG_PM
1825 static int snd_ca0106_suspend(struct pci_dev *pci, pm_message_t state)
1826 {
1827 	struct snd_card *card = pci_get_drvdata(pci);
1828 	struct snd_ca0106 *chip = card->private_data;
1829 	int i;
1830 
1831 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1832 	for (i = 0; i < 4; i++)
1833 		snd_pcm_suspend_all(chip->pcm[i]);
1834 	if (chip->details->ac97)
1835 		snd_ac97_suspend(chip->ac97);
1836 	snd_ca0106_mixer_suspend(chip);
1837 
1838 	ca0106_stop_chip(chip);
1839 
1840 	pci_disable_device(pci);
1841 	pci_save_state(pci);
1842 	pci_set_power_state(pci, pci_choose_state(pci, state));
1843 	return 0;
1844 }
1845 
1846 static int snd_ca0106_resume(struct pci_dev *pci)
1847 {
1848 	struct snd_card *card = pci_get_drvdata(pci);
1849 	struct snd_ca0106 *chip = card->private_data;
1850 	int i;
1851 
1852 	pci_set_power_state(pci, PCI_D0);
1853 	pci_restore_state(pci);
1854 
1855 	if (pci_enable_device(pci) < 0) {
1856 		snd_card_disconnect(card);
1857 		return -EIO;
1858 	}
1859 
1860 	pci_set_master(pci);
1861 
1862 	ca0106_init_chip(chip, 1);
1863 
1864 	if (chip->details->ac97)
1865 		snd_ac97_resume(chip->ac97);
1866 	snd_ca0106_mixer_resume(chip);
1867 	if (chip->details->spi_dac) {
1868 		for (i = 0; i < ARRAY_SIZE(chip->spi_dac_reg); i++)
1869 			snd_ca0106_spi_write(chip, chip->spi_dac_reg[i]);
1870 	}
1871 
1872 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1873 	return 0;
1874 }
1875 #endif
1876 
1877 // PCI IDs
1878 static struct pci_device_id snd_ca0106_ids[] = {
1879 	{ PCI_VDEVICE(CREATIVE, 0x0007), 0 },	/* Audigy LS or Live 24bit */
1880 	{ 0, }
1881 };
1882 MODULE_DEVICE_TABLE(pci, snd_ca0106_ids);
1883 
1884 // pci_driver definition
1885 static struct pci_driver driver = {
1886 	.name = "CA0106",
1887 	.id_table = snd_ca0106_ids,
1888 	.probe = snd_ca0106_probe,
1889 	.remove = __devexit_p(snd_ca0106_remove),
1890 #ifdef CONFIG_PM
1891 	.suspend = snd_ca0106_suspend,
1892 	.resume = snd_ca0106_resume,
1893 #endif
1894 };
1895 
1896 // initialization of the module
1897 static int __init alsa_card_ca0106_init(void)
1898 {
1899 	return pci_register_driver(&driver);
1900 }
1901 
1902 // clean up the module
1903 static void __exit alsa_card_ca0106_exit(void)
1904 {
1905 	pci_unregister_driver(&driver);
1906 }
1907 
1908 module_init(alsa_card_ca0106_init)
1909 module_exit(alsa_card_ca0106_exit)
1910