xref: /linux/sound/pci/ca0106/ca0106_main.c (revision d67b569f5f620c0fb95d5212642746b7ba9d29e4)
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: 0.0.23
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  *
83  *  BUGS:
84  *    Some stability problems when unloading the snd-ca0106 kernel module.
85  *    --
86  *
87  *  TODO:
88  *    4 Capture channels, only one implemented so far.
89  *    Other capture rates apart from 48khz not implemented.
90  *    MIDI
91  *    --
92  *  GENERAL INFO:
93  *    Model: SB0310
94  *    P17 Chip: CA0106-DAT
95  *    AC97 Codec: STAC 9721
96  *    ADC: Philips 1361T (Stereo 24bit)
97  *    DAC: WM8746EDS (6-channel, 24bit, 192Khz)
98  *
99  *  GENERAL INFO:
100  *    Model: SB0410
101  *    P17 Chip: CA0106-DAT
102  *    AC97 Codec: None
103  *    ADC: WM8775EDS (4 Channel)
104  *    DAC: CS4382 (114 dB, 24-Bit, 192 kHz, 8-Channel D/A Converter with DSD Support)
105  *    SPDIF Out control switches between Mic in and SPDIF out.
106  *    No sound out or mic input working yet.
107  *
108  *  GENERAL INFO:
109  *    Model: SB0413
110  *    P17 Chip: CA0106-DAT
111  *    AC97 Codec: None.
112  *    ADC: Unknown
113  *    DAC: Unknown
114  *    Trying to handle it like the SB0410.
115  *
116  *  This code was initally based on code from ALSA's emu10k1x.c which is:
117  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
118  *
119  *   This program is free software; you can redistribute it and/or modify
120  *   it under the terms of the GNU General Public License as published by
121  *   the Free Software Foundation; either version 2 of the License, or
122  *   (at your option) any later version.
123  *
124  *   This program is distributed in the hope that it will be useful,
125  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
126  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
127  *   GNU General Public License for more details.
128  *
129  *   You should have received a copy of the GNU General Public License
130  *   along with this program; if not, write to the Free Software
131  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
132  *
133  */
134 #include <sound/driver.h>
135 #include <linux/delay.h>
136 #include <linux/init.h>
137 #include <linux/interrupt.h>
138 #include <linux/pci.h>
139 #include <linux/slab.h>
140 #include <linux/moduleparam.h>
141 #include <linux/dma-mapping.h>
142 #include <sound/core.h>
143 #include <sound/initval.h>
144 #include <sound/pcm.h>
145 #include <sound/ac97_codec.h>
146 #include <sound/info.h>
147 
148 MODULE_AUTHOR("James Courtier-Dutton <James@superbug.demon.co.uk>");
149 MODULE_DESCRIPTION("CA0106");
150 MODULE_LICENSE("GPL");
151 MODULE_SUPPORTED_DEVICE("{{Creative,SB CA0106 chip}}");
152 
153 // module parameters (see "Module Parameters")
154 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
155 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
156 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
157 
158 module_param_array(index, int, NULL, 0444);
159 MODULE_PARM_DESC(index, "Index value for the CA0106 soundcard.");
160 module_param_array(id, charp, NULL, 0444);
161 MODULE_PARM_DESC(id, "ID string for the CA0106 soundcard.");
162 module_param_array(enable, bool, NULL, 0444);
163 MODULE_PARM_DESC(enable, "Enable the CA0106 soundcard.");
164 
165 #include "ca0106.h"
166 
167 static ca0106_details_t ca0106_chip_details[] = {
168 	 /* AudigyLS[SB0310] */
169 	 { .serial = 0x10021102,
170 	   .name   = "AudigyLS [SB0310]",
171 	   .ac97   = 1 } ,
172 	 /* Unknown AudigyLS that also says SB0310 on it */
173 	 { .serial = 0x10051102,
174 	   .name   = "AudigyLS [SB0310b]",
175 	   .ac97   = 1 } ,
176 	 /* New Sound Blaster Live! 7.1 24bit. This does not have an AC97. 53SB041000001 */
177 	 { .serial = 0x10061102,
178 	   .name   = "Live! 7.1 24bit [SB0410]",
179 	   .gpio_type = 1,
180 	   .i2c_adc = 1 } ,
181 	 /* New Dell Sound Blaster Live! 7.1 24bit. This does not have an AC97.  */
182 	 { .serial = 0x10071102,
183 	   .name   = "Live! 7.1 24bit [SB0413]",
184 	   .gpio_type = 1,
185 	   .i2c_adc = 1 } ,
186 	 /* MSI K8N Diamond Motherboard with onboard SB Live 24bit without AC97 */
187 	 { .serial = 0x10091462,
188 	   .name   = "MSI K8N Diamond MB [SB0438]",
189 	   .gpio_type = 1,
190 	   .i2c_adc = 1 } ,
191 	 { .serial = 0,
192 	   .name   = "AudigyLS [Unknown]" }
193 };
194 
195 /* hardware definition */
196 static snd_pcm_hardware_t snd_ca0106_playback_hw = {
197 	.info =			(SNDRV_PCM_INFO_MMAP |
198 				 SNDRV_PCM_INFO_INTERLEAVED |
199 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
200 				 SNDRV_PCM_INFO_MMAP_VALID),
201 	.formats =		SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
202 	.rates =		SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
203 	.rate_min =		48000,
204 	.rate_max =		192000,
205 	.channels_min =		2,  //1,
206 	.channels_max =		2,  //6,
207 	.buffer_bytes_max =	((65536 - 64) * 8),
208 	.period_bytes_min =	64,
209 	.period_bytes_max =	(65536 - 64),
210 	.periods_min =		2,
211 	.periods_max =		8,
212 	.fifo_size =		0,
213 };
214 
215 static snd_pcm_hardware_t snd_ca0106_capture_hw = {
216 	.info =			(SNDRV_PCM_INFO_MMAP |
217 				 SNDRV_PCM_INFO_INTERLEAVED |
218 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
219 				 SNDRV_PCM_INFO_MMAP_VALID),
220 	.formats =		SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
221 	.rates =		SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
222 	.rate_min =		44100,
223 	.rate_max =		192000,
224 	.channels_min =		2,
225 	.channels_max =		2,
226 	.buffer_bytes_max =	((65536 - 64) * 8),
227 	.period_bytes_min =	64,
228 	.period_bytes_max =	(65536 - 64),
229 	.periods_min =		2,
230 	.periods_max =		2,
231 	.fifo_size =		0,
232 };
233 
234 unsigned int snd_ca0106_ptr_read(ca0106_t * emu,
235 					  unsigned int reg,
236 					  unsigned int chn)
237 {
238 	unsigned long flags;
239 	unsigned int regptr, val;
240 
241 	regptr = (reg << 16) | chn;
242 
243 	spin_lock_irqsave(&emu->emu_lock, flags);
244 	outl(regptr, emu->port + PTR);
245 	val = inl(emu->port + DATA);
246 	spin_unlock_irqrestore(&emu->emu_lock, flags);
247 	return val;
248 }
249 
250 void snd_ca0106_ptr_write(ca0106_t *emu,
251 				   unsigned int reg,
252 				   unsigned int chn,
253 				   unsigned int data)
254 {
255 	unsigned int regptr;
256 	unsigned long flags;
257 
258 	regptr = (reg << 16) | chn;
259 
260 	spin_lock_irqsave(&emu->emu_lock, flags);
261 	outl(regptr, emu->port + PTR);
262 	outl(data, emu->port + DATA);
263 	spin_unlock_irqrestore(&emu->emu_lock, flags);
264 }
265 
266 int snd_ca0106_i2c_write(ca0106_t *emu,
267 				u32 reg,
268 				u32 value)
269 {
270 	u32 tmp;
271 	int timeout=0;
272 	int status;
273 	int retry;
274 	if ((reg > 0x7f) || (value > 0x1ff))
275 	{
276                 snd_printk("i2c_write: invalid values.\n");
277 		return -EINVAL;
278 	}
279 
280 	tmp = reg << 25 | value << 16;
281 	/* Not sure what this I2C channel controls. */
282 	/* snd_ca0106_ptr_write(emu, I2C_D0, 0, tmp); */
283 
284 	/* This controls the I2C connected to the WM8775 ADC Codec */
285 	snd_ca0106_ptr_write(emu, I2C_D1, 0, tmp);
286 
287 	for(retry=0;retry<10;retry++)
288 	{
289 		/* Send the data to i2c */
290 		tmp = snd_ca0106_ptr_read(emu, I2C_A, 0);
291 		tmp = tmp & ~(I2C_A_ADC_READ|I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD_MASK);
292 		tmp = tmp | (I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD);
293 		snd_ca0106_ptr_write(emu, I2C_A, 0, tmp);
294 
295 		/* Wait till the transaction ends */
296 		while(1)
297 		{
298 			status = snd_ca0106_ptr_read(emu, I2C_A, 0);
299                 	//snd_printk("I2C:status=0x%x\n", status);
300 			timeout++;
301 			if((status & I2C_A_ADC_START)==0)
302 				break;
303 
304 			if(timeout>1000)
305 				break;
306 		}
307 		//Read back and see if the transaction is successful
308 		if((status & I2C_A_ADC_ABORT)==0)
309 			break;
310 	}
311 
312 	if(retry==10)
313 	{
314                 snd_printk("Writing to ADC failed!\n");
315 		return -EINVAL;
316 	}
317 
318     	return 0;
319 }
320 
321 
322 static void snd_ca0106_intr_enable(ca0106_t *emu, unsigned int intrenb)
323 {
324 	unsigned long flags;
325 	unsigned int enable;
326 
327 	spin_lock_irqsave(&emu->emu_lock, flags);
328 	enable = inl(emu->port + INTE) | intrenb;
329 	outl(enable, emu->port + INTE);
330 	spin_unlock_irqrestore(&emu->emu_lock, flags);
331 }
332 
333 static void snd_ca0106_pcm_free_substream(snd_pcm_runtime_t *runtime)
334 {
335 	kfree(runtime->private_data);
336 }
337 
338 /* open_playback callback */
339 static int snd_ca0106_pcm_open_playback_channel(snd_pcm_substream_t *substream, int channel_id)
340 {
341 	ca0106_t *chip = snd_pcm_substream_chip(substream);
342         ca0106_channel_t *channel = &(chip->playback_channels[channel_id]);
343 	ca0106_pcm_t *epcm;
344 	snd_pcm_runtime_t *runtime = substream->runtime;
345 	int err;
346 
347 	epcm = kcalloc(1, sizeof(*epcm), GFP_KERNEL);
348 
349 	if (epcm == NULL)
350 		return -ENOMEM;
351 	epcm->emu = chip;
352 	epcm->substream = substream;
353         epcm->channel_id=channel_id;
354 
355 	runtime->private_data = epcm;
356 	runtime->private_free = snd_ca0106_pcm_free_substream;
357 
358 	runtime->hw = snd_ca0106_playback_hw;
359 
360         channel->emu = chip;
361         channel->number = channel_id;
362 
363         channel->use=1;
364         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
365         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
366         channel->epcm=epcm;
367 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
368                 return err;
369 	if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
370                 return err;
371 	return 0;
372 }
373 
374 /* close callback */
375 static int snd_ca0106_pcm_close_playback(snd_pcm_substream_t *substream)
376 {
377 	ca0106_t *chip = snd_pcm_substream_chip(substream);
378 	snd_pcm_runtime_t *runtime = substream->runtime;
379         ca0106_pcm_t *epcm = runtime->private_data;
380         chip->playback_channels[epcm->channel_id].use=0;
381 /* FIXME: maybe zero others */
382 	return 0;
383 }
384 
385 static int snd_ca0106_pcm_open_playback_front(snd_pcm_substream_t *substream)
386 {
387 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
388 }
389 
390 static int snd_ca0106_pcm_open_playback_center_lfe(snd_pcm_substream_t *substream)
391 {
392 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_CENTER_LFE_CHANNEL);
393 }
394 
395 static int snd_ca0106_pcm_open_playback_unknown(snd_pcm_substream_t *substream)
396 {
397 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_UNKNOWN_CHANNEL);
398 }
399 
400 static int snd_ca0106_pcm_open_playback_rear(snd_pcm_substream_t *substream)
401 {
402 	return snd_ca0106_pcm_open_playback_channel(substream, PCM_REAR_CHANNEL);
403 }
404 
405 /* open_capture callback */
406 static int snd_ca0106_pcm_open_capture_channel(snd_pcm_substream_t *substream, int channel_id)
407 {
408 	ca0106_t *chip = snd_pcm_substream_chip(substream);
409         ca0106_channel_t *channel = &(chip->capture_channels[channel_id]);
410 	ca0106_pcm_t *epcm;
411 	snd_pcm_runtime_t *runtime = substream->runtime;
412 	int err;
413 
414 	epcm = kcalloc(1, sizeof(*epcm), GFP_KERNEL);
415 	if (epcm == NULL) {
416                 snd_printk("open_capture_channel: failed epcm alloc\n");
417 		return -ENOMEM;
418         }
419 	epcm->emu = chip;
420 	epcm->substream = substream;
421         epcm->channel_id=channel_id;
422 
423 	runtime->private_data = epcm;
424 	runtime->private_free = snd_ca0106_pcm_free_substream;
425 
426 	runtime->hw = snd_ca0106_capture_hw;
427 
428         channel->emu = chip;
429         channel->number = channel_id;
430 
431         channel->use=1;
432         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
433         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
434         channel->epcm=epcm;
435 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
436                 return err;
437 	//snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_capture_period_sizes);
438 	if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
439                 return err;
440 	return 0;
441 }
442 
443 /* close callback */
444 static int snd_ca0106_pcm_close_capture(snd_pcm_substream_t *substream)
445 {
446 	ca0106_t *chip = snd_pcm_substream_chip(substream);
447 	snd_pcm_runtime_t *runtime = substream->runtime;
448         ca0106_pcm_t *epcm = runtime->private_data;
449         chip->capture_channels[epcm->channel_id].use=0;
450 /* FIXME: maybe zero others */
451 	return 0;
452 }
453 
454 static int snd_ca0106_pcm_open_0_capture(snd_pcm_substream_t *substream)
455 {
456 	return snd_ca0106_pcm_open_capture_channel(substream, 0);
457 }
458 
459 static int snd_ca0106_pcm_open_1_capture(snd_pcm_substream_t *substream)
460 {
461 	return snd_ca0106_pcm_open_capture_channel(substream, 1);
462 }
463 
464 static int snd_ca0106_pcm_open_2_capture(snd_pcm_substream_t *substream)
465 {
466 	return snd_ca0106_pcm_open_capture_channel(substream, 2);
467 }
468 
469 static int snd_ca0106_pcm_open_3_capture(snd_pcm_substream_t *substream)
470 {
471 	return snd_ca0106_pcm_open_capture_channel(substream, 3);
472 }
473 
474 /* hw_params callback */
475 static int snd_ca0106_pcm_hw_params_playback(snd_pcm_substream_t *substream,
476 				      snd_pcm_hw_params_t * hw_params)
477 {
478 	return snd_pcm_lib_malloc_pages(substream,
479 					params_buffer_bytes(hw_params));
480 }
481 
482 /* hw_free callback */
483 static int snd_ca0106_pcm_hw_free_playback(snd_pcm_substream_t *substream)
484 {
485 	return snd_pcm_lib_free_pages(substream);
486 }
487 
488 /* hw_params callback */
489 static int snd_ca0106_pcm_hw_params_capture(snd_pcm_substream_t *substream,
490 				      snd_pcm_hw_params_t * hw_params)
491 {
492 	return snd_pcm_lib_malloc_pages(substream,
493 					params_buffer_bytes(hw_params));
494 }
495 
496 /* hw_free callback */
497 static int snd_ca0106_pcm_hw_free_capture(snd_pcm_substream_t *substream)
498 {
499 	return snd_pcm_lib_free_pages(substream);
500 }
501 
502 /* prepare playback callback */
503 static int snd_ca0106_pcm_prepare_playback(snd_pcm_substream_t *substream)
504 {
505 	ca0106_t *emu = snd_pcm_substream_chip(substream);
506 	snd_pcm_runtime_t *runtime = substream->runtime;
507 	ca0106_pcm_t *epcm = runtime->private_data;
508 	int channel = epcm->channel_id;
509 	u32 *table_base = (u32 *)(emu->buffer.area+(8*16*channel));
510 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
511 	u32 hcfg_mask = HCFG_PLAYBACK_S32_LE;
512 	u32 hcfg_set = 0x00000000;
513 	u32 hcfg;
514 	u32 reg40_mask = 0x30000 << (channel<<1);
515 	u32 reg40_set = 0;
516 	u32 reg40;
517 	/* FIXME: Depending on mixer selection of SPDIF out or not, select the spdif rate or the DAC rate. */
518 	u32 reg71_mask = 0x03030000 ; /* Global. Set SPDIF rate. We only support 44100 to spdif, not to DAC. */
519 	u32 reg71_set = 0;
520 	u32 reg71;
521 	int i;
522 
523         //snd_printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, periods=%u, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, runtime->periods, frames_to_bytes(runtime, 1));
524         //snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
525 	//snd_printk("dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
526 	/* Rate can be set per channel. */
527 	/* reg40 control host to fifo */
528 	/* reg71 controls DAC rate. */
529 	switch (runtime->rate) {
530 	case 44100:
531 		reg40_set = 0x10000 << (channel<<1);
532 		reg71_set = 0x01010000;
533 		break;
534         case 48000:
535 		reg40_set = 0;
536 		reg71_set = 0;
537 		break;
538 	case 96000:
539 		reg40_set = 0x20000 << (channel<<1);
540 		reg71_set = 0x02020000;
541 		break;
542 	case 192000:
543 		reg40_set = 0x30000 << (channel<<1);
544 		reg71_set = 0x03030000;
545 		break;
546 	default:
547 		reg40_set = 0;
548 		reg71_set = 0;
549 		break;
550 	}
551 	/* Format is a global setting */
552 	/* FIXME: Only let the first channel accessed set this. */
553 	switch (runtime->format) {
554 	case SNDRV_PCM_FORMAT_S16_LE:
555 		hcfg_set = 0;
556 		break;
557 	case SNDRV_PCM_FORMAT_S32_LE:
558 		hcfg_set = HCFG_PLAYBACK_S32_LE;
559 		break;
560 	default:
561 		hcfg_set = 0;
562 		break;
563 	}
564 	hcfg = inl(emu->port + HCFG) ;
565 	hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
566 	outl(hcfg, emu->port + HCFG);
567 	reg40 = snd_ca0106_ptr_read(emu, 0x40, 0);
568 	reg40 = (reg40 & ~reg40_mask) | reg40_set;
569 	snd_ca0106_ptr_write(emu, 0x40, 0, reg40);
570 	reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
571 	reg71 = (reg71 & ~reg71_mask) | reg71_set;
572 	snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
573 
574 	/* FIXME: Check emu->buffer.size before actually writing to it. */
575         for(i=0; i < runtime->periods; i++) {
576 		table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
577 		table_base[(i*2)+1]=period_size_bytes<<16;
578 	}
579 
580 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_ADDR, channel, emu->buffer.addr+(8*16*channel));
581 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
582 	snd_ca0106_ptr_write(emu, PLAYBACK_LIST_PTR, channel, 0);
583 	snd_ca0106_ptr_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
584 	snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
585 	/* FIXME  test what 0 bytes does. */
586 	snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
587 	snd_ca0106_ptr_write(emu, PLAYBACK_POINTER, channel, 0);
588 	snd_ca0106_ptr_write(emu, 0x07, channel, 0x0);
589 	snd_ca0106_ptr_write(emu, 0x08, channel, 0);
590         snd_ca0106_ptr_write(emu, PLAYBACK_MUTE, 0x0, 0x0); /* Unmute output */
591 #if 0
592 	snd_ca0106_ptr_write(emu, SPCS0, 0,
593 			       SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
594 			       SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
595 			       SPCS_GENERATIONSTATUS | 0x00001200 |
596 			       0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT );
597 	}
598 #endif
599 
600 	return 0;
601 }
602 
603 /* prepare capture callback */
604 static int snd_ca0106_pcm_prepare_capture(snd_pcm_substream_t *substream)
605 {
606 	ca0106_t *emu = snd_pcm_substream_chip(substream);
607 	snd_pcm_runtime_t *runtime = substream->runtime;
608 	ca0106_pcm_t *epcm = runtime->private_data;
609 	int channel = epcm->channel_id;
610 	u32 hcfg_mask = HCFG_CAPTURE_S32_LE;
611 	u32 hcfg_set = 0x00000000;
612 	u32 hcfg;
613 	u32 over_sampling=0x2;
614 	u32 reg71_mask = 0x0000c000 ; /* Global. Set ADC rate. */
615 	u32 reg71_set = 0;
616 	u32 reg71;
617 
618         //snd_printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, periods=%u, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, runtime->periods, frames_to_bytes(runtime, 1));
619         //snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
620 	//snd_printk("dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
621 	/* reg71 controls ADC rate. */
622 	switch (runtime->rate) {
623 	case 44100:
624 		reg71_set = 0x00004000;
625 		break;
626         case 48000:
627 		reg71_set = 0;
628 		break;
629 	case 96000:
630 		reg71_set = 0x00008000;
631 		over_sampling=0xa;
632 		break;
633 	case 192000:
634 		reg71_set = 0x0000c000;
635 		over_sampling=0xa;
636 		break;
637 	default:
638 		reg71_set = 0;
639 		break;
640 	}
641 	/* Format is a global setting */
642 	/* FIXME: Only let the first channel accessed set this. */
643 	switch (runtime->format) {
644 	case SNDRV_PCM_FORMAT_S16_LE:
645 		hcfg_set = 0;
646 		break;
647 	case SNDRV_PCM_FORMAT_S32_LE:
648 		hcfg_set = HCFG_CAPTURE_S32_LE;
649 		break;
650 	default:
651 		hcfg_set = 0;
652 		break;
653 	}
654 	hcfg = inl(emu->port + HCFG) ;
655 	hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
656 	outl(hcfg, emu->port + HCFG);
657 	reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
658 	reg71 = (reg71 & ~reg71_mask) | reg71_set;
659 	snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
660         if (emu->details->i2c_adc == 1) { /* The SB0410 and SB0413 use I2C to control ADC. */
661 	        snd_ca0106_i2c_write(emu, ADC_MASTER, over_sampling); /* Adjust the over sampler to better suit the capture rate. */
662 	}
663 
664 
665         //printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size,  frames_to_bytes(runtime, 1));
666 	snd_ca0106_ptr_write(emu, 0x13, channel, 0);
667 	snd_ca0106_ptr_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
668 	snd_ca0106_ptr_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
669 	snd_ca0106_ptr_write(emu, CAPTURE_POINTER, channel, 0);
670 
671 	return 0;
672 }
673 
674 /* trigger_playback callback */
675 static int snd_ca0106_pcm_trigger_playback(snd_pcm_substream_t *substream,
676 				    int cmd)
677 {
678 	ca0106_t *emu = snd_pcm_substream_chip(substream);
679 	snd_pcm_runtime_t *runtime;
680 	ca0106_pcm_t *epcm;
681 	int channel;
682 	int result = 0;
683 	struct list_head *pos;
684         snd_pcm_substream_t *s;
685 	u32 basic = 0;
686 	u32 extended = 0;
687 	int running=0;
688 
689 	switch (cmd) {
690 	case SNDRV_PCM_TRIGGER_START:
691 		running=1;
692 		break;
693 	case SNDRV_PCM_TRIGGER_STOP:
694 	default:
695 		running=0;
696 		break;
697 	}
698         snd_pcm_group_for_each(pos, substream) {
699                 s = snd_pcm_group_substream_entry(pos);
700 		runtime = s->runtime;
701 		epcm = runtime->private_data;
702 		channel = epcm->channel_id;
703 		//snd_printk("channel=%d\n",channel);
704 		epcm->running = running;
705 		basic |= (0x1<<channel);
706 		extended |= (0x10<<channel);
707                 snd_pcm_trigger_done(s, substream);
708         }
709 	//snd_printk("basic=0x%x, extended=0x%x\n",basic, extended);
710 
711 	switch (cmd) {
712 	case SNDRV_PCM_TRIGGER_START:
713 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) | (extended));
714 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0)|(basic));
715 		break;
716 	case SNDRV_PCM_TRIGGER_STOP:
717 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
718 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) & ~(extended));
719 		break;
720 	default:
721 		result = -EINVAL;
722 		break;
723 	}
724 	return result;
725 }
726 
727 /* trigger_capture callback */
728 static int snd_ca0106_pcm_trigger_capture(snd_pcm_substream_t *substream,
729 				    int cmd)
730 {
731 	ca0106_t *emu = snd_pcm_substream_chip(substream);
732 	snd_pcm_runtime_t *runtime = substream->runtime;
733 	ca0106_pcm_t *epcm = runtime->private_data;
734 	int channel = epcm->channel_id;
735 	int result = 0;
736 
737 	switch (cmd) {
738 	case SNDRV_PCM_TRIGGER_START:
739 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
740 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
741 		epcm->running = 1;
742 		break;
743 	case SNDRV_PCM_TRIGGER_STOP:
744 		snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
745 		snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
746 		epcm->running = 0;
747 		break;
748 	default:
749 		result = -EINVAL;
750 		break;
751 	}
752 	return result;
753 }
754 
755 /* pointer_playback callback */
756 static snd_pcm_uframes_t
757 snd_ca0106_pcm_pointer_playback(snd_pcm_substream_t *substream)
758 {
759 	ca0106_t *emu = snd_pcm_substream_chip(substream);
760 	snd_pcm_runtime_t *runtime = substream->runtime;
761 	ca0106_pcm_t *epcm = runtime->private_data;
762 	snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
763 	int channel = epcm->channel_id;
764 
765 	if (!epcm->running)
766 		return 0;
767 
768 	ptr3 = snd_ca0106_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
769 	ptr1 = snd_ca0106_ptr_read(emu, PLAYBACK_POINTER, channel);
770 	ptr4 = snd_ca0106_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
771 	if (ptr3 != ptr4) ptr1 = snd_ca0106_ptr_read(emu, PLAYBACK_POINTER, channel);
772 	ptr2 = bytes_to_frames(runtime, ptr1);
773 	ptr2+= (ptr4 >> 3) * runtime->period_size;
774 	ptr=ptr2;
775         if (ptr >= runtime->buffer_size)
776 		ptr -= runtime->buffer_size;
777 	//printk("ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n", ptr1, ptr2, ptr, (int)runtime->buffer_size, (int)runtime->period_size, (int)runtime->frame_bits, (int)runtime->rate);
778 
779 	return ptr;
780 }
781 
782 /* pointer_capture callback */
783 static snd_pcm_uframes_t
784 snd_ca0106_pcm_pointer_capture(snd_pcm_substream_t *substream)
785 {
786 	ca0106_t *emu = snd_pcm_substream_chip(substream);
787 	snd_pcm_runtime_t *runtime = substream->runtime;
788 	ca0106_pcm_t *epcm = runtime->private_data;
789 	snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
790 	int channel = channel=epcm->channel_id;
791 
792 	if (!epcm->running)
793 		return 0;
794 
795 	ptr1 = snd_ca0106_ptr_read(emu, CAPTURE_POINTER, channel);
796 	ptr2 = bytes_to_frames(runtime, ptr1);
797 	ptr=ptr2;
798         if (ptr >= runtime->buffer_size)
799 		ptr -= runtime->buffer_size;
800 	//printk("ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n", ptr1, ptr2, ptr, (int)runtime->buffer_size, (int)runtime->period_size, (int)runtime->frame_bits, (int)runtime->rate);
801 
802 	return ptr;
803 }
804 
805 /* operators */
806 static snd_pcm_ops_t snd_ca0106_playback_front_ops = {
807 	.open =        snd_ca0106_pcm_open_playback_front,
808 	.close =       snd_ca0106_pcm_close_playback,
809 	.ioctl =       snd_pcm_lib_ioctl,
810 	.hw_params =   snd_ca0106_pcm_hw_params_playback,
811 	.hw_free =     snd_ca0106_pcm_hw_free_playback,
812 	.prepare =     snd_ca0106_pcm_prepare_playback,
813 	.trigger =     snd_ca0106_pcm_trigger_playback,
814 	.pointer =     snd_ca0106_pcm_pointer_playback,
815 };
816 
817 static snd_pcm_ops_t snd_ca0106_capture_0_ops = {
818 	.open =        snd_ca0106_pcm_open_0_capture,
819 	.close =       snd_ca0106_pcm_close_capture,
820 	.ioctl =       snd_pcm_lib_ioctl,
821 	.hw_params =   snd_ca0106_pcm_hw_params_capture,
822 	.hw_free =     snd_ca0106_pcm_hw_free_capture,
823 	.prepare =     snd_ca0106_pcm_prepare_capture,
824 	.trigger =     snd_ca0106_pcm_trigger_capture,
825 	.pointer =     snd_ca0106_pcm_pointer_capture,
826 };
827 
828 static snd_pcm_ops_t snd_ca0106_capture_1_ops = {
829 	.open =        snd_ca0106_pcm_open_1_capture,
830 	.close =       snd_ca0106_pcm_close_capture,
831 	.ioctl =       snd_pcm_lib_ioctl,
832 	.hw_params =   snd_ca0106_pcm_hw_params_capture,
833 	.hw_free =     snd_ca0106_pcm_hw_free_capture,
834 	.prepare =     snd_ca0106_pcm_prepare_capture,
835 	.trigger =     snd_ca0106_pcm_trigger_capture,
836 	.pointer =     snd_ca0106_pcm_pointer_capture,
837 };
838 
839 static snd_pcm_ops_t snd_ca0106_capture_2_ops = {
840 	.open =        snd_ca0106_pcm_open_2_capture,
841 	.close =       snd_ca0106_pcm_close_capture,
842 	.ioctl =       snd_pcm_lib_ioctl,
843 	.hw_params =   snd_ca0106_pcm_hw_params_capture,
844 	.hw_free =     snd_ca0106_pcm_hw_free_capture,
845 	.prepare =     snd_ca0106_pcm_prepare_capture,
846 	.trigger =     snd_ca0106_pcm_trigger_capture,
847 	.pointer =     snd_ca0106_pcm_pointer_capture,
848 };
849 
850 static snd_pcm_ops_t snd_ca0106_capture_3_ops = {
851 	.open =        snd_ca0106_pcm_open_3_capture,
852 	.close =       snd_ca0106_pcm_close_capture,
853 	.ioctl =       snd_pcm_lib_ioctl,
854 	.hw_params =   snd_ca0106_pcm_hw_params_capture,
855 	.hw_free =     snd_ca0106_pcm_hw_free_capture,
856 	.prepare =     snd_ca0106_pcm_prepare_capture,
857 	.trigger =     snd_ca0106_pcm_trigger_capture,
858 	.pointer =     snd_ca0106_pcm_pointer_capture,
859 };
860 
861 static snd_pcm_ops_t snd_ca0106_playback_center_lfe_ops = {
862         .open =         snd_ca0106_pcm_open_playback_center_lfe,
863         .close =        snd_ca0106_pcm_close_playback,
864         .ioctl =        snd_pcm_lib_ioctl,
865         .hw_params =    snd_ca0106_pcm_hw_params_playback,
866         .hw_free =      snd_ca0106_pcm_hw_free_playback,
867         .prepare =      snd_ca0106_pcm_prepare_playback,
868         .trigger =      snd_ca0106_pcm_trigger_playback,
869         .pointer =      snd_ca0106_pcm_pointer_playback,
870 };
871 
872 static snd_pcm_ops_t snd_ca0106_playback_unknown_ops = {
873         .open =         snd_ca0106_pcm_open_playback_unknown,
874         .close =        snd_ca0106_pcm_close_playback,
875         .ioctl =        snd_pcm_lib_ioctl,
876         .hw_params =    snd_ca0106_pcm_hw_params_playback,
877         .hw_free =      snd_ca0106_pcm_hw_free_playback,
878         .prepare =      snd_ca0106_pcm_prepare_playback,
879         .trigger =      snd_ca0106_pcm_trigger_playback,
880         .pointer =      snd_ca0106_pcm_pointer_playback,
881 };
882 
883 static snd_pcm_ops_t snd_ca0106_playback_rear_ops = {
884         .open =         snd_ca0106_pcm_open_playback_rear,
885         .close =        snd_ca0106_pcm_close_playback,
886         .ioctl =        snd_pcm_lib_ioctl,
887         .hw_params =    snd_ca0106_pcm_hw_params_playback,
888 		.hw_free =      snd_ca0106_pcm_hw_free_playback,
889         .prepare =      snd_ca0106_pcm_prepare_playback,
890         .trigger =      snd_ca0106_pcm_trigger_playback,
891         .pointer =      snd_ca0106_pcm_pointer_playback,
892 };
893 
894 
895 static unsigned short snd_ca0106_ac97_read(ac97_t *ac97,
896 					     unsigned short reg)
897 {
898 	ca0106_t *emu = ac97->private_data;
899 	unsigned long flags;
900 	unsigned short val;
901 
902 	spin_lock_irqsave(&emu->emu_lock, flags);
903 	outb(reg, emu->port + AC97ADDRESS);
904 	val = inw(emu->port + AC97DATA);
905 	spin_unlock_irqrestore(&emu->emu_lock, flags);
906 	return val;
907 }
908 
909 static void snd_ca0106_ac97_write(ac97_t *ac97,
910 				    unsigned short reg, unsigned short val)
911 {
912 	ca0106_t *emu = ac97->private_data;
913 	unsigned long flags;
914 
915 	spin_lock_irqsave(&emu->emu_lock, flags);
916 	outb(reg, emu->port + AC97ADDRESS);
917 	outw(val, emu->port + AC97DATA);
918 	spin_unlock_irqrestore(&emu->emu_lock, flags);
919 }
920 
921 static int snd_ca0106_ac97(ca0106_t *chip)
922 {
923 	ac97_bus_t *pbus;
924 	ac97_template_t ac97;
925 	int err;
926 	static ac97_bus_ops_t ops = {
927 		.write = snd_ca0106_ac97_write,
928 		.read = snd_ca0106_ac97_read,
929 	};
930 
931 	if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
932 		return err;
933 	pbus->no_vra = 1; /* we don't need VRA */
934 
935 	memset(&ac97, 0, sizeof(ac97));
936 	ac97.private_data = chip;
937 	ac97.scaps = AC97_SCAP_NO_SPDIF;
938 	return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
939 }
940 
941 static int snd_ca0106_free(ca0106_t *chip)
942 {
943 	if (chip->res_port != NULL) {    /* avoid access to already used hardware */
944 		// disable interrupts
945 		snd_ca0106_ptr_write(chip, BASIC_INTERRUPT, 0, 0);
946 		outl(0, chip->port + INTE);
947 		snd_ca0106_ptr_write(chip, EXTENDED_INT_MASK, 0, 0);
948 		udelay(1000);
949 		// disable audio
950 		//outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
951 		outl(0, chip->port + HCFG);
952 		/* FIXME: We need to stop and DMA transfers here.
953 		 *        But as I am not sure how yet, we cannot from the dma pages.
954 		 * So we can fix: snd-malloc: Memory leak?  pages not freed = 8
955 		 */
956 	}
957 	// release the data
958 #if 1
959 	if (chip->buffer.area)
960 		snd_dma_free_pages(&chip->buffer);
961 #endif
962 
963 	// release the i/o port
964 	if (chip->res_port) {
965 		release_resource(chip->res_port);
966 		kfree_nocheck(chip->res_port);
967 	}
968 	// release the irq
969 	if (chip->irq >= 0)
970 		free_irq(chip->irq, (void *)chip);
971 	pci_disable_device(chip->pci);
972 	kfree(chip);
973 	return 0;
974 }
975 
976 static int snd_ca0106_dev_free(snd_device_t *device)
977 {
978 	ca0106_t *chip = device->device_data;
979 	return snd_ca0106_free(chip);
980 }
981 
982 static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id,
983 					  struct pt_regs *regs)
984 {
985 	unsigned int status;
986 
987 	ca0106_t *chip = dev_id;
988 	int i;
989 	int mask;
990         unsigned int stat76;
991 	ca0106_channel_t *pchannel;
992 
993 	spin_lock(&chip->emu_lock);
994 
995 	status = inl(chip->port + IPR);
996 
997 	// call updater, unlock before it
998 	spin_unlock(&chip->emu_lock);
999 
1000 	if (! status)
1001 		return IRQ_NONE;
1002 
1003         stat76 = snd_ca0106_ptr_read(chip, EXTENDED_INT, 0);
1004 	//snd_printk("interrupt status = 0x%08x, stat76=0x%08x\n", status, stat76);
1005 	//snd_printk("ptr=0x%08x\n",snd_ca0106_ptr_read(chip, PLAYBACK_POINTER, 0));
1006         mask = 0x11; /* 0x1 for one half, 0x10 for the other half period. */
1007 	for(i = 0; i < 4; i++) {
1008 		pchannel = &(chip->playback_channels[i]);
1009 		if(stat76 & mask) {
1010 /* FIXME: Select the correct substream for period elapsed */
1011 			if(pchannel->use) {
1012                           snd_pcm_period_elapsed(pchannel->epcm->substream);
1013 	                //printk(KERN_INFO "interrupt [%d] used\n", i);
1014                         }
1015 		}
1016 	        //printk(KERN_INFO "channel=%p\n",pchannel);
1017 	        //printk(KERN_INFO "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1018 		mask <<= 1;
1019 	}
1020         mask = 0x110000; /* 0x1 for one half, 0x10 for the other half period. */
1021 	for(i = 0; i < 4; i++) {
1022 		pchannel = &(chip->capture_channels[i]);
1023 		if(stat76 & mask) {
1024 /* FIXME: Select the correct substream for period elapsed */
1025 			if(pchannel->use) {
1026                           snd_pcm_period_elapsed(pchannel->epcm->substream);
1027 	                //printk(KERN_INFO "interrupt [%d] used\n", i);
1028                         }
1029 		}
1030 	        //printk(KERN_INFO "channel=%p\n",pchannel);
1031 	        //printk(KERN_INFO "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1032 		mask <<= 1;
1033 	}
1034 
1035         snd_ca0106_ptr_write(chip, EXTENDED_INT, 0, stat76);
1036 	spin_lock(&chip->emu_lock);
1037 	// acknowledge the interrupt if necessary
1038 	outl(status, chip->port+IPR);
1039 
1040 	spin_unlock(&chip->emu_lock);
1041 
1042 	return IRQ_HANDLED;
1043 }
1044 
1045 static void snd_ca0106_pcm_free(snd_pcm_t *pcm)
1046 {
1047 	ca0106_t *emu = pcm->private_data;
1048 	emu->pcm = NULL;
1049 	snd_pcm_lib_preallocate_free_for_all(pcm);
1050 }
1051 
1052 static int __devinit snd_ca0106_pcm(ca0106_t *emu, int device, snd_pcm_t **rpcm)
1053 {
1054 	snd_pcm_t *pcm;
1055 	snd_pcm_substream_t *substream;
1056 	int err;
1057 
1058 	if (rpcm)
1059 		*rpcm = NULL;
1060 	if ((err = snd_pcm_new(emu->card, "ca0106", device, 1, 1, &pcm)) < 0)
1061 		return err;
1062 
1063 	pcm->private_data = emu;
1064 	pcm->private_free = snd_ca0106_pcm_free;
1065 
1066 	switch (device) {
1067 	case 0:
1068 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_front_ops);
1069 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_0_ops);
1070           break;
1071 	case 1:
1072 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_rear_ops);
1073 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_1_ops);
1074           break;
1075 	case 2:
1076 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_center_lfe_ops);
1077 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_2_ops);
1078           break;
1079 	case 3:
1080 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_unknown_ops);
1081 	  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_3_ops);
1082           break;
1083         }
1084 
1085 	pcm->info_flags = 0;
1086 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1087 	strcpy(pcm->name, "CA0106");
1088 	emu->pcm = pcm;
1089 
1090 	for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
1091 	    substream;
1092 	    substream = substream->next) {
1093 		if ((err = snd_pcm_lib_preallocate_pages(substream,
1094 							 SNDRV_DMA_TYPE_DEV,
1095 							 snd_dma_pci_data(emu->pci),
1096 							 64*1024, 64*1024)) < 0) /* FIXME: 32*1024 for sound buffer, between 32and64 for Periods table. */
1097 			return err;
1098 	}
1099 
1100 	for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
1101 	      substream;
1102 	      substream = substream->next) {
1103  		if ((err = snd_pcm_lib_preallocate_pages(substream,
1104 	                                           SNDRV_DMA_TYPE_DEV,
1105 	                                           snd_dma_pci_data(emu->pci),
1106 	                                           64*1024, 64*1024)) < 0)
1107 			return err;
1108 	}
1109 
1110 	if (rpcm)
1111 		*rpcm = pcm;
1112 
1113 	return 0;
1114 }
1115 
1116 static int __devinit snd_ca0106_create(snd_card_t *card,
1117 					 struct pci_dev *pci,
1118 					 ca0106_t **rchip)
1119 {
1120 	ca0106_t *chip;
1121 	ca0106_details_t *c;
1122 	int err;
1123 	int ch;
1124 	static snd_device_ops_t ops = {
1125 		.dev_free = snd_ca0106_dev_free,
1126 	};
1127 
1128 	*rchip = NULL;
1129 
1130 	if ((err = pci_enable_device(pci)) < 0)
1131 		return err;
1132 	if (pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0 ||
1133 	    pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0) {
1134 		printk(KERN_ERR "error to set 32bit mask DMA\n");
1135 		pci_disable_device(pci);
1136 		return -ENXIO;
1137 	}
1138 
1139 	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
1140 	if (chip == NULL) {
1141 		pci_disable_device(pci);
1142 		return -ENOMEM;
1143 	}
1144 
1145 	chip->card = card;
1146 	chip->pci = pci;
1147 	chip->irq = -1;
1148 
1149 	spin_lock_init(&chip->emu_lock);
1150 
1151 	chip->port = pci_resource_start(pci, 0);
1152 	if ((chip->res_port = request_region(chip->port, 0x20,
1153 					     "snd_ca0106")) == NULL) {
1154 		snd_ca0106_free(chip);
1155 		printk(KERN_ERR "cannot allocate the port\n");
1156 		return -EBUSY;
1157 	}
1158 
1159 	if (request_irq(pci->irq, snd_ca0106_interrupt,
1160 			SA_INTERRUPT|SA_SHIRQ, "snd_ca0106",
1161 			(void *)chip)) {
1162 		snd_ca0106_free(chip);
1163 		printk(KERN_ERR "cannot grab irq\n");
1164 		return -EBUSY;
1165 	}
1166 	chip->irq = pci->irq;
1167 
1168  	/* This stores the periods table. */
1169 	if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci), 1024, &chip->buffer) < 0) {
1170 		snd_ca0106_free(chip);
1171 		return -ENOMEM;
1172 	}
1173 
1174 	pci_set_master(pci);
1175 	/* read revision & serial */
1176 	pci_read_config_byte(pci, PCI_REVISION_ID, (char *)&chip->revision);
1177 	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
1178 	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
1179 #if 1
1180 	printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
1181 	       chip->revision, chip->serial);
1182 #endif
1183 	strcpy(card->driver, "CA0106");
1184 	strcpy(card->shortname, "CA0106");
1185 
1186 	for (c=ca0106_chip_details; c->serial; c++) {
1187 		if (c->serial == chip->serial) break;
1188 	}
1189 	chip->details = c;
1190 	sprintf(card->longname, "%s at 0x%lx irq %i",
1191 		c->name, chip->port, chip->irq);
1192 
1193 	outl(0, chip->port + INTE);
1194 
1195 	/*
1196 	 *  Init to 0x02109204 :
1197 	 *  Clock accuracy    = 0     (1000ppm)
1198 	 *  Sample Rate       = 2     (48kHz)
1199 	 *  Audio Channel     = 1     (Left of 2)
1200 	 *  Source Number     = 0     (Unspecified)
1201 	 *  Generation Status = 1     (Original for Cat Code 12)
1202 	 *  Cat Code          = 12    (Digital Signal Mixer)
1203 	 *  Mode              = 0     (Mode 0)
1204 	 *  Emphasis          = 0     (None)
1205 	 *  CP                = 1     (Copyright unasserted)
1206 	 *  AN                = 0     (Audio data)
1207 	 *  P                 = 0     (Consumer)
1208 	 */
1209 	snd_ca0106_ptr_write(chip, SPCS0, 0,
1210 				chip->spdif_bits[0] =
1211 				SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1212 				SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1213 				SPCS_GENERATIONSTATUS | 0x00001200 |
1214 				0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1215 	/* Only SPCS1 has been tested */
1216 	snd_ca0106_ptr_write(chip, SPCS1, 0,
1217 				chip->spdif_bits[1] =
1218 				SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1219 				SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1220 				SPCS_GENERATIONSTATUS | 0x00001200 |
1221 				0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1222 	snd_ca0106_ptr_write(chip, SPCS2, 0,
1223 				chip->spdif_bits[2] =
1224 				SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1225 				SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1226 				SPCS_GENERATIONSTATUS | 0x00001200 |
1227 				0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1228 	snd_ca0106_ptr_write(chip, SPCS3, 0,
1229 				chip->spdif_bits[3] =
1230 				SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1231 				SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1232 				SPCS_GENERATIONSTATUS | 0x00001200 |
1233 				0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1234 
1235         snd_ca0106_ptr_write(chip, PLAYBACK_MUTE, 0, 0x00fc0000);
1236         snd_ca0106_ptr_write(chip, CAPTURE_MUTE, 0, 0x00fc0000);
1237 
1238         /* Write 0x8000 to AC97_REC_GAIN to mute it. */
1239         outb(AC97_REC_GAIN, chip->port + AC97ADDRESS);
1240         outw(0x8000, chip->port + AC97DATA);
1241 #if 0
1242 	snd_ca0106_ptr_write(chip, SPCS0, 0, 0x2108006);
1243 	snd_ca0106_ptr_write(chip, 0x42, 0, 0x2108006);
1244 	snd_ca0106_ptr_write(chip, 0x43, 0, 0x2108006);
1245 	snd_ca0106_ptr_write(chip, 0x44, 0, 0x2108006);
1246 #endif
1247 
1248 	//snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0xf0f003f); /* OSS drivers set this. */
1249 	/* Analog or Digital output */
1250 	snd_ca0106_ptr_write(chip, SPDIF_SELECT1, 0, 0xf);
1251 	snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0x000f0000); /* 0x0b000000 for digital, 0x000b0000 for analog, from win2000 drivers. Use 0x000f0000 for surround71 */
1252 	chip->spdif_enable = 0; /* Set digital SPDIF output off */
1253 	chip->capture_source = 3; /* Set CAPTURE_SOURCE */
1254 	//snd_ca0106_ptr_write(chip, 0x45, 0, 0); /* Analogue out */
1255 	//snd_ca0106_ptr_write(chip, 0x45, 0, 0xf00); /* Digital out */
1256 
1257 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 0, 0x40c81000); /* goes to 0x40c80000 when doing SPDIF IN/OUT */
1258 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 1, 0xffffffff); /* (Mute) CAPTURE feedback into PLAYBACK volume. Only lower 16 bits matter. */
1259 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 2, 0x30300000); /* SPDIF IN Volume */
1260 	snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 3, 0x00700000); /* SPDIF IN Volume, 0x70 = (vol & 0x3f) | 0x40 */
1261 	snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING1, 0, 0x32765410);
1262 	snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING2, 0, 0x76767676);
1263 	snd_ca0106_ptr_write(chip, CAPTURE_ROUTING1, 0, 0x32765410);
1264 	snd_ca0106_ptr_write(chip, CAPTURE_ROUTING2, 0, 0x76767676);
1265 	for(ch = 0; ch < 4; ch++) {
1266 		snd_ca0106_ptr_write(chip, CAPTURE_VOLUME1, ch, 0x30303030); /* Only high 16 bits matter */
1267 		snd_ca0106_ptr_write(chip, CAPTURE_VOLUME2, ch, 0x30303030);
1268 		//snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0x40404040); /* Mute */
1269 		//snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0x40404040); /* Mute */
1270 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0xffffffff); /* Mute */
1271 		snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0xffffffff); /* Mute */
1272 	}
1273         snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC, Line in, TAD in, AUX in */
1274 	chip->capture_source = 3; /* Set CAPTURE_SOURCE */
1275 
1276         if (chip->details->gpio_type == 1) { /* The SB0410 and SB0413 use GPIO differently. */
1277 		/* FIXME: Still need to find out what the other GPIO bits do. E.g. For digital spdif out. */
1278 		outl(0x0, chip->port+GPIO);
1279 		//outl(0x00f0e000, chip->port+GPIO); /* Analog */
1280 		outl(0x005f5301, chip->port+GPIO); /* Analog */
1281 	} else {
1282 		outl(0x0, chip->port+GPIO);
1283 		outl(0x005f03a3, chip->port+GPIO); /* Analog */
1284 		//outl(0x005f02a2, chip->port+GPIO);   /* SPDIF */
1285 	}
1286 	snd_ca0106_intr_enable(chip, 0x105); /* Win2000 uses 0x1e0 */
1287 
1288 	//outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
1289 	//outl(0x00001409, chip->port+HCFG); /* 0x1000 causes AC3 to fails. Maybe it effects 24 bit output. */
1290 	//outl(0x00000009, chip->port+HCFG);
1291 	outl(HCFG_AC97 | HCFG_AUDIOENABLE, chip->port+HCFG); /* AC97 2.0, Enable outputs. */
1292 
1293         if (chip->details->i2c_adc == 1) { /* The SB0410 and SB0413 use I2C to control ADC. */
1294 	        snd_ca0106_i2c_write(chip, ADC_MUX, ADC_MUX_LINEIN); /* Enable Line-in capture. MIC in currently untested. */
1295 	}
1296 
1297 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1298 				  chip, &ops)) < 0) {
1299 		snd_ca0106_free(chip);
1300 		return err;
1301 	}
1302 	*rchip = chip;
1303 	return 0;
1304 }
1305 
1306 static int __devinit snd_ca0106_probe(struct pci_dev *pci,
1307 					const struct pci_device_id *pci_id)
1308 {
1309 	static int dev;
1310 	snd_card_t *card;
1311 	ca0106_t *chip;
1312 	int err;
1313 
1314 	if (dev >= SNDRV_CARDS)
1315 		return -ENODEV;
1316 	if (!enable[dev]) {
1317 		dev++;
1318 		return -ENOENT;
1319 	}
1320 
1321 	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1322 	if (card == NULL)
1323 		return -ENOMEM;
1324 
1325 	if ((err = snd_ca0106_create(card, pci, &chip)) < 0) {
1326 		snd_card_free(card);
1327 		return err;
1328 	}
1329 
1330 	if ((err = snd_ca0106_pcm(chip, 0, NULL)) < 0) {
1331 		snd_card_free(card);
1332 		return err;
1333 	}
1334 	if ((err = snd_ca0106_pcm(chip, 1, NULL)) < 0) {
1335 		snd_card_free(card);
1336 		return err;
1337 	}
1338 	if ((err = snd_ca0106_pcm(chip, 2, NULL)) < 0) {
1339 		snd_card_free(card);
1340 		return err;
1341 	}
1342 	if ((err = snd_ca0106_pcm(chip, 3, NULL)) < 0) {
1343 		snd_card_free(card);
1344 		return err;
1345 	}
1346         if (chip->details->ac97 == 1) { /* The SB0410 and SB0413 do not have an AC97 chip. */
1347 		if ((err = snd_ca0106_ac97(chip)) < 0) {
1348 			snd_card_free(card);
1349 			return err;
1350 		}
1351 	}
1352 	if ((err = snd_ca0106_mixer(chip)) < 0) {
1353 		snd_card_free(card);
1354 		return err;
1355 	}
1356 
1357 	snd_ca0106_proc_init(chip);
1358 
1359 	if ((err = snd_card_register(card)) < 0) {
1360 		snd_card_free(card);
1361 		return err;
1362 	}
1363 
1364 	pci_set_drvdata(pci, card);
1365 	dev++;
1366 	return 0;
1367 }
1368 
1369 static void __devexit snd_ca0106_remove(struct pci_dev *pci)
1370 {
1371 	snd_card_free(pci_get_drvdata(pci));
1372 	pci_set_drvdata(pci, NULL);
1373 }
1374 
1375 // PCI IDs
1376 static struct pci_device_id snd_ca0106_ids[] = {
1377 	{ 0x1102, 0x0007, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },	/* Audigy LS or Live 24bit */
1378 	{ 0, }
1379 };
1380 MODULE_DEVICE_TABLE(pci, snd_ca0106_ids);
1381 
1382 // pci_driver definition
1383 static struct pci_driver driver = {
1384 	.name = "CA0106",
1385 	.id_table = snd_ca0106_ids,
1386 	.probe = snd_ca0106_probe,
1387 	.remove = __devexit_p(snd_ca0106_remove),
1388 };
1389 
1390 // initialization of the module
1391 static int __init alsa_card_ca0106_init(void)
1392 {
1393 	int err;
1394 
1395 	if ((err = pci_register_driver(&driver)) > 0)
1396 		return err;
1397 
1398 	return 0;
1399 }
1400 
1401 // clean up the module
1402 static void __exit alsa_card_ca0106_exit(void)
1403 {
1404 	pci_unregister_driver(&driver);
1405 }
1406 
1407 module_init(alsa_card_ca0106_init)
1408 module_exit(alsa_card_ca0106_exit)
1409