Version:  2.0.40 2.2.26 2.4.37 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16

Linux/sound/pci/ca0106/ca0106_main.c

  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 initially 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/module.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 bool 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 = 0x4021 } ,
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 = 0x4021 } ,
242         /* Sound Blaster 5.1vx
243          * Tested: Playback on front, rear, center/lfe speakers
244          * Not-Tested: Capture
245          */
246         { .serial = 0x10041102,
247           .name   = "Sound Blaster 5.1vx [SB1070]",
248           .gpio_type = 1,
249           .i2c_adc = 0,
250           .spi_dac = 0x0124
251          } ,
252          /* MSI K8N Diamond Motherboard with onboard SB Live 24bit without AC97 */
253          /* SB0438
254           * CTRL:CA0106-DAT
255           * ADC: WM8775SEDS
256           * DAC: CS4382-KQZ
257           */
258          { .serial = 0x10091462,
259            .name   = "MSI K8N Diamond MB [SB0438]",
260            .gpio_type = 2,
261            .i2c_adc = 1 } ,
262          /* MSI K8N Diamond PLUS MB */
263          { .serial = 0x10091102,
264            .name   = "MSI K8N Diamond MB",
265            .gpio_type = 2,
266            .i2c_adc = 1,
267            .spi_dac = 0x4021 } ,
268         /* Giga-byte GA-G1975X mobo
269          * Novell bnc#395807
270          */
271         /* FIXME: the GPIO and I2C setting aren't tested well */
272         { .serial = 0x1458a006,
273           .name = "Giga-byte GA-G1975X",
274           .gpio_type = 1,
275           .i2c_adc = 1 },
276          /* Shuttle XPC SD31P which has an onboard Creative Labs
277           * Sound Blaster Live! 24-bit EAX
278           * high-definition 7.1 audio processor".
279           * Added using info from andrewvegan in alsa bug #1298
280           */
281          { .serial = 0x30381297,
282            .name   = "Shuttle XPC SD31P [SD31P]",
283            .gpio_type = 1,
284            .i2c_adc = 1 } ,
285         /* Shuttle XPC SD11G5 which has an onboard Creative Labs
286          * Sound Blaster Live! 24-bit EAX
287          * high-definition 7.1 audio processor".
288          * Fixes ALSA bug#1600
289          */
290         { .serial = 0x30411297,
291           .name = "Shuttle XPC SD11G5 [SD11G5]",
292           .gpio_type = 1,
293           .i2c_adc = 1 } ,
294          { .serial = 0,
295            .name   = "AudigyLS [Unknown]" }
296 };
297 
298 /* hardware definition */
299 static struct snd_pcm_hardware snd_ca0106_playback_hw = {
300         .info =                 SNDRV_PCM_INFO_MMAP | 
301                                 SNDRV_PCM_INFO_INTERLEAVED |
302                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
303                                 SNDRV_PCM_INFO_MMAP_VALID |
304                                 SNDRV_PCM_INFO_SYNC_START,
305         .formats =              SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
306         .rates =                (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |
307                                  SNDRV_PCM_RATE_192000),
308         .rate_min =             48000,
309         .rate_max =             192000,
310         .channels_min =         2,  //1,
311         .channels_max =         2,  //6,
312         .buffer_bytes_max =     ((65536 - 64) * 8),
313         .period_bytes_min =     64,
314         .period_bytes_max =     (65536 - 64),
315         .periods_min =          2,
316         .periods_max =          8,
317         .fifo_size =            0,
318 };
319 
320 static struct snd_pcm_hardware snd_ca0106_capture_hw = {
321         .info =                 (SNDRV_PCM_INFO_MMAP | 
322                                  SNDRV_PCM_INFO_INTERLEAVED |
323                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
324                                  SNDRV_PCM_INFO_MMAP_VALID),
325         .formats =              SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
326 #if 0 /* FIXME: looks like 44.1kHz capture causes noisy output on 48kHz */
327         .rates =                (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
328                                  SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),
329         .rate_min =             44100,
330 #else
331         .rates =                (SNDRV_PCM_RATE_48000 |
332                                  SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),
333         .rate_min =             48000,
334 #endif /* FIXME */
335         .rate_max =             192000,
336         .channels_min =         2,
337         .channels_max =         2,
338         .buffer_bytes_max =     65536 - 128,
339         .period_bytes_min =     64,
340         .period_bytes_max =     32768 - 64,
341         .periods_min =          2,
342         .periods_max =          2,
343         .fifo_size =            0,
344 };
345 
346 unsigned int snd_ca0106_ptr_read(struct snd_ca0106 * emu, 
347                                           unsigned int reg, 
348                                           unsigned int chn)
349 {
350         unsigned long flags;
351         unsigned int regptr, val;
352   
353         regptr = (reg << 16) | chn;
354 
355         spin_lock_irqsave(&emu->emu_lock, flags);
356         outl(regptr, emu->port + PTR);
357         val = inl(emu->port + DATA);
358         spin_unlock_irqrestore(&emu->emu_lock, flags);
359         return val;
360 }
361 
362 void snd_ca0106_ptr_write(struct snd_ca0106 *emu, 
363                                    unsigned int reg, 
364                                    unsigned int chn, 
365                                    unsigned int data)
366 {
367         unsigned int regptr;
368         unsigned long flags;
369 
370         regptr = (reg << 16) | chn;
371 
372         spin_lock_irqsave(&emu->emu_lock, flags);
373         outl(regptr, emu->port + PTR);
374         outl(data, emu->port + DATA);
375         spin_unlock_irqrestore(&emu->emu_lock, flags);
376 }
377 
378 int snd_ca0106_spi_write(struct snd_ca0106 * emu,
379                                    unsigned int data)
380 {
381         unsigned int reset, set;
382         unsigned int reg, tmp;
383         int n, result;
384         reg = SPI;
385         if (data > 0xffff) /* Only 16bit values allowed */
386                 return 1;
387         tmp = snd_ca0106_ptr_read(emu, reg, 0);
388         reset = (tmp & ~0x3ffff) | 0x20000; /* Set xxx20000 */
389         set = reset | 0x10000; /* Set xxx1xxxx */
390         snd_ca0106_ptr_write(emu, reg, 0, reset | data);
391         tmp = snd_ca0106_ptr_read(emu, reg, 0); /* write post */
392         snd_ca0106_ptr_write(emu, reg, 0, set | data);
393         result = 1;
394         /* Wait for status bit to return to 0 */
395         for (n = 0; n < 100; n++) {
396                 udelay(10);
397                 tmp = snd_ca0106_ptr_read(emu, reg, 0);
398                 if (!(tmp & 0x10000)) {
399                         result = 0;
400                         break;
401                 }
402         }
403         if (result) /* Timed out */
404                 return 1;
405         snd_ca0106_ptr_write(emu, reg, 0, reset | data);
406         tmp = snd_ca0106_ptr_read(emu, reg, 0); /* Write post */
407         return 0;
408 }
409 
410 /* The ADC does not support i2c read, so only write is implemented */
411 int snd_ca0106_i2c_write(struct snd_ca0106 *emu,
412                                 u32 reg,
413                                 u32 value)
414 {
415         u32 tmp;
416         int timeout = 0;
417         int status;
418         int retry;
419         if ((reg > 0x7f) || (value > 0x1ff)) {
420                 dev_err(emu->card->dev, "i2c_write: invalid values.\n");
421                 return -EINVAL;
422         }
423 
424         tmp = reg << 25 | value << 16;
425         /*
426         dev_dbg(emu->card->dev, "I2C-write:reg=0x%x, value=0x%x\n", reg, value);
427         */
428         /* Not sure what this I2C channel controls. */
429         /* snd_ca0106_ptr_write(emu, I2C_D0, 0, tmp); */
430 
431         /* This controls the I2C connected to the WM8775 ADC Codec */
432         snd_ca0106_ptr_write(emu, I2C_D1, 0, tmp);
433 
434         for (retry = 0; retry < 10; retry++) {
435                 /* Send the data to i2c */
436                 //tmp = snd_ca0106_ptr_read(emu, I2C_A, 0);
437                 //tmp = tmp & ~(I2C_A_ADC_READ|I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD_MASK);
438                 tmp = 0;
439                 tmp = tmp | (I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD);
440                 snd_ca0106_ptr_write(emu, I2C_A, 0, tmp);
441 
442                 /* Wait till the transaction ends */
443                 while (1) {
444                         status = snd_ca0106_ptr_read(emu, I2C_A, 0);
445                         /*dev_dbg(emu->card->dev, "I2C:status=0x%x\n", status);*/
446                         timeout++;
447                         if ((status & I2C_A_ADC_START) == 0)
448                                 break;
449 
450                         if (timeout > 1000)
451                                 break;
452                 }
453                 //Read back and see if the transaction is successful
454                 if ((status & I2C_A_ADC_ABORT) == 0)
455                         break;
456         }
457 
458         if (retry == 10) {
459                 dev_err(emu->card->dev, "Writing to ADC failed!\n");
460                 return -EINVAL;
461         }
462     
463         return 0;
464 }
465 
466 
467 static void snd_ca0106_intr_enable(struct snd_ca0106 *emu, unsigned int intrenb)
468 {
469         unsigned long flags;
470         unsigned int intr_enable;
471 
472         spin_lock_irqsave(&emu->emu_lock, flags);
473         intr_enable = inl(emu->port + INTE) | intrenb;
474         outl(intr_enable, emu->port + INTE);
475         spin_unlock_irqrestore(&emu->emu_lock, flags);
476 }
477 
478 static void snd_ca0106_intr_disable(struct snd_ca0106 *emu, unsigned int intrenb)
479 {
480         unsigned long flags;
481         unsigned int intr_enable;
482 
483         spin_lock_irqsave(&emu->emu_lock, flags);
484         intr_enable = inl(emu->port + INTE) & ~intrenb;
485         outl(intr_enable, emu->port + INTE);
486         spin_unlock_irqrestore(&emu->emu_lock, flags);
487 }
488 
489 
490 static void snd_ca0106_pcm_free_substream(struct snd_pcm_runtime *runtime)
491 {
492         kfree(runtime->private_data);
493 }
494 
495 static const int spi_dacd_reg[] = {
496         SPI_DACD0_REG,
497         SPI_DACD1_REG,
498         SPI_DACD2_REG,
499         0,
500         SPI_DACD4_REG,
501 };
502 static const int spi_dacd_bit[] = {
503         SPI_DACD0_BIT,
504         SPI_DACD1_BIT,
505         SPI_DACD2_BIT,
506         0,
507         SPI_DACD4_BIT,
508 };
509 
510 static void restore_spdif_bits(struct snd_ca0106 *chip, int idx)
511 {
512         if (chip->spdif_str_bits[idx] != chip->spdif_bits[idx]) {
513                 chip->spdif_str_bits[idx] = chip->spdif_bits[idx];
514                 snd_ca0106_ptr_write(chip, SPCS0 + idx, 0,
515                                      chip->spdif_str_bits[idx]);
516         }
517 }
518 
519 static int snd_ca0106_channel_dac(struct snd_ca0106 *chip,
520                                   struct snd_ca0106_details *details,
521                                   int channel_id)
522 {
523         switch (channel_id) {
524         case PCM_FRONT_CHANNEL:
525                 return (details->spi_dac & 0xf000) >> (4 * 3);
526         case PCM_REAR_CHANNEL:
527                 return (details->spi_dac & 0x0f00) >> (4 * 2);
528         case PCM_CENTER_LFE_CHANNEL:
529                 return (details->spi_dac & 0x00f0) >> (4 * 1);
530         case PCM_UNKNOWN_CHANNEL:
531                 return (details->spi_dac & 0x000f) >> (4 * 0);
532         default:
533                 dev_dbg(chip->card->dev, "ca0106: unknown channel_id %d\n",
534                            channel_id);
535         }
536         return 0;
537 }
538 
539 static int snd_ca0106_pcm_power_dac(struct snd_ca0106 *chip, int channel_id,
540                                     int power)
541 {
542         if (chip->details->spi_dac) {
543                 const int dac = snd_ca0106_channel_dac(chip, chip->details,
544                                                        channel_id);
545                 const int reg = spi_dacd_reg[dac];
546                 const int bit = spi_dacd_bit[dac];
547 
548                 if (power)
549                         /* Power up */
550                         chip->spi_dac_reg[reg] &= ~bit;
551                 else
552                         /* Power down */
553                         chip->spi_dac_reg[reg] |= bit;
554                 return snd_ca0106_spi_write(chip, chip->spi_dac_reg[reg]);
555         }
556         return 0;
557 }
558 
559 /* open_playback callback */
560 static int snd_ca0106_pcm_open_playback_channel(struct snd_pcm_substream *substream,
561                                                 int channel_id)
562 {
563         struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
564         struct snd_ca0106_channel *channel = &(chip->playback_channels[channel_id]);
565         struct snd_ca0106_pcm *epcm;
566         struct snd_pcm_runtime *runtime = substream->runtime;
567         int err;
568 
569         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
570 
571         if (epcm == NULL)
572                 return -ENOMEM;
573         epcm->emu = chip;
574         epcm->substream = substream;
575         epcm->channel_id=channel_id;
576   
577         runtime->private_data = epcm;
578         runtime->private_free = snd_ca0106_pcm_free_substream;
579   
580         runtime->hw = snd_ca0106_playback_hw;
581 
582         channel->emu = chip;
583         channel->number = channel_id;
584 
585         channel->use = 1;
586         /*
587         dev_dbg(chip->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
588                channel_id, chip, channel);
589         */
590         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
591         channel->epcm = epcm;
592         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
593                 return err;
594         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
595                 return err;
596         snd_pcm_set_sync(substream);
597 
598         /* Front channel dac should already be on */
599         if (channel_id != PCM_FRONT_CHANNEL) {
600                 err = snd_ca0106_pcm_power_dac(chip, channel_id, 1);
601                 if (err < 0)
602                         return err;
603         }
604 
605         restore_spdif_bits(chip, channel_id);
606 
607         return 0;
608 }
609 
610 /* close callback */
611 static int snd_ca0106_pcm_close_playback(struct snd_pcm_substream *substream)
612 {
613         struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
614         struct snd_pcm_runtime *runtime = substream->runtime;
615         struct snd_ca0106_pcm *epcm = runtime->private_data;
616         chip->playback_channels[epcm->channel_id].use = 0;
617 
618         restore_spdif_bits(chip, epcm->channel_id);
619 
620         /* Front channel dac should stay on */
621         if (epcm->channel_id != PCM_FRONT_CHANNEL) {
622                 int err;
623                 err = snd_ca0106_pcm_power_dac(chip, epcm->channel_id, 0);
624                 if (err < 0)
625                         return err;
626         }
627 
628         /* FIXME: maybe zero others */
629         return 0;
630 }
631 
632 static int snd_ca0106_pcm_open_playback_front(struct snd_pcm_substream *substream)
633 {
634         return snd_ca0106_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
635 }
636 
637 static int snd_ca0106_pcm_open_playback_center_lfe(struct snd_pcm_substream *substream)
638 {
639         return snd_ca0106_pcm_open_playback_channel(substream, PCM_CENTER_LFE_CHANNEL);
640 }
641 
642 static int snd_ca0106_pcm_open_playback_unknown(struct snd_pcm_substream *substream)
643 {
644         return snd_ca0106_pcm_open_playback_channel(substream, PCM_UNKNOWN_CHANNEL);
645 }
646 
647 static int snd_ca0106_pcm_open_playback_rear(struct snd_pcm_substream *substream)
648 {
649         return snd_ca0106_pcm_open_playback_channel(substream, PCM_REAR_CHANNEL);
650 }
651 
652 /* open_capture callback */
653 static int snd_ca0106_pcm_open_capture_channel(struct snd_pcm_substream *substream,
654                                                int channel_id)
655 {
656         struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
657         struct snd_ca0106_channel *channel = &(chip->capture_channels[channel_id]);
658         struct snd_ca0106_pcm *epcm;
659         struct snd_pcm_runtime *runtime = substream->runtime;
660         int err;
661 
662         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
663         if (epcm == NULL) {
664                 dev_err(chip->card->dev,
665                         "open_capture_channel: failed epcm alloc\n");
666                 return -ENOMEM;
667         }
668         epcm->emu = chip;
669         epcm->substream = substream;
670         epcm->channel_id=channel_id;
671   
672         runtime->private_data = epcm;
673         runtime->private_free = snd_ca0106_pcm_free_substream;
674   
675         runtime->hw = snd_ca0106_capture_hw;
676 
677         channel->emu = chip;
678         channel->number = channel_id;
679 
680         channel->use = 1;
681         /*
682         dev_dbg(chip->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
683                channel_id, chip, channel);
684         */
685         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
686         channel->epcm = epcm;
687         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
688                 return err;
689         //snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_capture_period_sizes);
690         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
691                 return err;
692         return 0;
693 }
694 
695 /* close callback */
696 static int snd_ca0106_pcm_close_capture(struct snd_pcm_substream *substream)
697 {
698         struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
699         struct snd_pcm_runtime *runtime = substream->runtime;
700         struct snd_ca0106_pcm *epcm = runtime->private_data;
701         chip->capture_channels[epcm->channel_id].use = 0;
702         /* FIXME: maybe zero others */
703         return 0;
704 }
705 
706 static int snd_ca0106_pcm_open_0_capture(struct snd_pcm_substream *substream)
707 {
708         return snd_ca0106_pcm_open_capture_channel(substream, 0);
709 }
710 
711 static int snd_ca0106_pcm_open_1_capture(struct snd_pcm_substream *substream)
712 {
713         return snd_ca0106_pcm_open_capture_channel(substream, 1);
714 }
715 
716 static int snd_ca0106_pcm_open_2_capture(struct snd_pcm_substream *substream)
717 {
718         return snd_ca0106_pcm_open_capture_channel(substream, 2);
719 }
720 
721 static int snd_ca0106_pcm_open_3_capture(struct snd_pcm_substream *substream)
722 {
723         return snd_ca0106_pcm_open_capture_channel(substream, 3);
724 }
725 
726 /* hw_params callback */
727 static int snd_ca0106_pcm_hw_params_playback(struct snd_pcm_substream *substream,
728                                       struct snd_pcm_hw_params *hw_params)
729 {
730         return snd_pcm_lib_malloc_pages(substream,
731                                         params_buffer_bytes(hw_params));
732 }
733 
734 /* hw_free callback */
735 static int snd_ca0106_pcm_hw_free_playback(struct snd_pcm_substream *substream)
736 {
737         return snd_pcm_lib_free_pages(substream);
738 }
739 
740 /* hw_params callback */
741 static int snd_ca0106_pcm_hw_params_capture(struct snd_pcm_substream *substream,
742                                       struct snd_pcm_hw_params *hw_params)
743 {
744         return snd_pcm_lib_malloc_pages(substream,
745                                         params_buffer_bytes(hw_params));
746 }
747 
748 /* hw_free callback */
749 static int snd_ca0106_pcm_hw_free_capture(struct snd_pcm_substream *substream)
750 {
751         return snd_pcm_lib_free_pages(substream);
752 }
753 
754 /* prepare playback callback */
755 static int snd_ca0106_pcm_prepare_playback(struct snd_pcm_substream *substream)
756 {
757         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
758         struct snd_pcm_runtime *runtime = substream->runtime;
759         struct snd_ca0106_pcm *epcm = runtime->private_data;
760         int channel = epcm->channel_id;
761         u32 *table_base = (u32 *)(emu->buffer.area+(8*16*channel));
762         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
763         u32 hcfg_mask = HCFG_PLAYBACK_S32_LE;
764         u32 hcfg_set = 0x00000000;
765         u32 hcfg;
766         u32 reg40_mask = 0x30000 << (channel<<1);
767         u32 reg40_set = 0;
768         u32 reg40;
769         /* FIXME: Depending on mixer selection of SPDIF out or not, select the spdif rate or the DAC rate. */
770         u32 reg71_mask = 0x03030000 ; /* Global. Set SPDIF rate. We only support 44100 to spdif, not to DAC. */
771         u32 reg71_set = 0;
772         u32 reg71;
773         int i;
774         
775 #if 0 /* debug */
776         dev_dbg(emu->card->dev,
777                    "prepare:channel_number=%d, rate=%d, format=0x%x, "
778                    "channels=%d, buffer_size=%ld, period_size=%ld, "
779                    "periods=%u, frames_to_bytes=%d\n",
780                    channel, runtime->rate, runtime->format,
781                    runtime->channels, runtime->buffer_size,
782                    runtime->period_size, runtime->periods,
783                    frames_to_bytes(runtime, 1));
784         dev_dbg(emu->card->dev,
785                 "dma_addr=%x, dma_area=%p, table_base=%p\n",
786                    runtime->dma_addr, runtime->dma_area, table_base);
787         dev_dbg(emu->card->dev,
788                 "dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
789                    emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
790 #endif /* debug */
791         /* Rate can be set per channel. */
792         /* reg40 control host to fifo */
793         /* reg71 controls DAC rate. */
794         switch (runtime->rate) {
795         case 44100:
796                 reg40_set = 0x10000 << (channel<<1);
797                 reg71_set = 0x01010000; 
798                 break;
799         case 48000:
800                 reg40_set = 0;
801                 reg71_set = 0; 
802                 break;
803         case 96000:
804                 reg40_set = 0x20000 << (channel<<1);
805                 reg71_set = 0x02020000; 
806                 break;
807         case 192000:
808                 reg40_set = 0x30000 << (channel<<1);
809                 reg71_set = 0x03030000; 
810                 break;
811         default:
812                 reg40_set = 0;
813                 reg71_set = 0; 
814                 break;
815         }
816         /* Format is a global setting */
817         /* FIXME: Only let the first channel accessed set this. */
818         switch (runtime->format) {
819         case SNDRV_PCM_FORMAT_S16_LE:
820                 hcfg_set = 0;
821                 break;
822         case SNDRV_PCM_FORMAT_S32_LE:
823                 hcfg_set = HCFG_PLAYBACK_S32_LE;
824                 break;
825         default:
826                 hcfg_set = 0;
827                 break;
828         }
829         hcfg = inl(emu->port + HCFG) ;
830         hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
831         outl(hcfg, emu->port + HCFG);
832         reg40 = snd_ca0106_ptr_read(emu, 0x40, 0);
833         reg40 = (reg40 & ~reg40_mask) | reg40_set;
834         snd_ca0106_ptr_write(emu, 0x40, 0, reg40);
835         reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
836         reg71 = (reg71 & ~reg71_mask) | reg71_set;
837         snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
838 
839         /* FIXME: Check emu->buffer.size before actually writing to it. */
840         for(i=0; i < runtime->periods; i++) {
841                 table_base[i*2] = runtime->dma_addr + (i * period_size_bytes);
842                 table_base[i*2+1] = period_size_bytes << 16;
843         }
844  
845         snd_ca0106_ptr_write(emu, PLAYBACK_LIST_ADDR, channel, emu->buffer.addr+(8*16*channel));
846         snd_ca0106_ptr_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
847         snd_ca0106_ptr_write(emu, PLAYBACK_LIST_PTR, channel, 0);
848         snd_ca0106_ptr_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
849         snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
850         /* FIXME  test what 0 bytes does. */
851         snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
852         snd_ca0106_ptr_write(emu, PLAYBACK_POINTER, channel, 0);
853         snd_ca0106_ptr_write(emu, 0x07, channel, 0x0);
854         snd_ca0106_ptr_write(emu, 0x08, channel, 0);
855         snd_ca0106_ptr_write(emu, PLAYBACK_MUTE, 0x0, 0x0); /* Unmute output */
856 #if 0
857         snd_ca0106_ptr_write(emu, SPCS0, 0,
858                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
859                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
860                                SPCS_GENERATIONSTATUS | 0x00001200 |
861                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT );
862 #endif
863 
864         return 0;
865 }
866 
867 /* prepare capture callback */
868 static int snd_ca0106_pcm_prepare_capture(struct snd_pcm_substream *substream)
869 {
870         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
871         struct snd_pcm_runtime *runtime = substream->runtime;
872         struct snd_ca0106_pcm *epcm = runtime->private_data;
873         int channel = epcm->channel_id;
874         u32 hcfg_mask = HCFG_CAPTURE_S32_LE;
875         u32 hcfg_set = 0x00000000;
876         u32 hcfg;
877         u32 over_sampling=0x2;
878         u32 reg71_mask = 0x0000c000 ; /* Global. Set ADC rate. */
879         u32 reg71_set = 0;
880         u32 reg71;
881         
882 #if 0 /* debug */
883         dev_dbg(emu->card->dev,
884                    "prepare:channel_number=%d, rate=%d, format=0x%x, "
885                    "channels=%d, buffer_size=%ld, period_size=%ld, "
886                    "periods=%u, frames_to_bytes=%d\n",
887                    channel, runtime->rate, runtime->format,
888                    runtime->channels, runtime->buffer_size,
889                    runtime->period_size, runtime->periods,
890                    frames_to_bytes(runtime, 1));
891         dev_dbg(emu->card->dev,
892                 "dma_addr=%x, dma_area=%p, table_base=%p\n",
893                    runtime->dma_addr, runtime->dma_area, table_base);
894         dev_dbg(emu->card->dev,
895                 "dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
896                    emu->buffer.addr, emu->buffer.area, emu->buffer.bytes);
897 #endif /* debug */
898         /* reg71 controls ADC rate. */
899         switch (runtime->rate) {
900         case 44100:
901                 reg71_set = 0x00004000;
902                 break;
903         case 48000:
904                 reg71_set = 0; 
905                 break;
906         case 96000:
907                 reg71_set = 0x00008000;
908                 over_sampling=0xa;
909                 break;
910         case 192000:
911                 reg71_set = 0x0000c000; 
912                 over_sampling=0xa;
913                 break;
914         default:
915                 reg71_set = 0; 
916                 break;
917         }
918         /* Format is a global setting */
919         /* FIXME: Only let the first channel accessed set this. */
920         switch (runtime->format) {
921         case SNDRV_PCM_FORMAT_S16_LE:
922                 hcfg_set = 0;
923                 break;
924         case SNDRV_PCM_FORMAT_S32_LE:
925                 hcfg_set = HCFG_CAPTURE_S32_LE;
926                 break;
927         default:
928                 hcfg_set = 0;
929                 break;
930         }
931         hcfg = inl(emu->port + HCFG) ;
932         hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
933         outl(hcfg, emu->port + HCFG);
934         reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
935         reg71 = (reg71 & ~reg71_mask) | reg71_set;
936         snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
937         if (emu->details->i2c_adc == 1) { /* The SB0410 and SB0413 use I2C to control ADC. */
938                 snd_ca0106_i2c_write(emu, ADC_MASTER, over_sampling); /* Adjust the over sampler to better suit the capture rate. */
939         }
940 
941 
942         /*
943         dev_dbg(emu->card->dev,
944                "prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, "
945                "buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",
946                channel, runtime->rate, runtime->format, runtime->channels,
947                runtime->buffer_size, runtime->period_size,
948                frames_to_bytes(runtime, 1));
949         */
950         snd_ca0106_ptr_write(emu, 0x13, channel, 0);
951         snd_ca0106_ptr_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
952         snd_ca0106_ptr_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
953         snd_ca0106_ptr_write(emu, CAPTURE_POINTER, channel, 0);
954 
955         return 0;
956 }
957 
958 /* trigger_playback callback */
959 static int snd_ca0106_pcm_trigger_playback(struct snd_pcm_substream *substream,
960                                     int cmd)
961 {
962         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
963         struct snd_pcm_runtime *runtime;
964         struct snd_ca0106_pcm *epcm;
965         int channel;
966         int result = 0;
967         struct snd_pcm_substream *s;
968         u32 basic = 0;
969         u32 extended = 0;
970         u32 bits;
971         int running = 0;
972 
973         switch (cmd) {
974         case SNDRV_PCM_TRIGGER_START:
975         case SNDRV_PCM_TRIGGER_RESUME:
976                 running = 1;
977                 break;
978         case SNDRV_PCM_TRIGGER_STOP:
979         case SNDRV_PCM_TRIGGER_SUSPEND:
980         default:
981                 running = 0;
982                 break;
983         }
984         snd_pcm_group_for_each_entry(s, substream) {
985                 if (snd_pcm_substream_chip(s) != emu ||
986                     s->stream != SNDRV_PCM_STREAM_PLAYBACK)
987                         continue;
988                 runtime = s->runtime;
989                 epcm = runtime->private_data;
990                 channel = epcm->channel_id;
991                 /* dev_dbg(emu->card->dev, "channel=%d\n", channel); */
992                 epcm->running = running;
993                 basic |= (0x1 << channel);
994                 extended |= (0x10 << channel);
995                 snd_pcm_trigger_done(s, substream);
996         }
997         /* dev_dbg(emu->card->dev, "basic=0x%x, extended=0x%x\n",basic, extended); */
998 
999         switch (cmd) {
1000         case SNDRV_PCM_TRIGGER_START:
1001         case SNDRV_PCM_TRIGGER_RESUME:
1002                 bits = snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0);
1003                 bits |= extended;
1004                 snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, bits);
1005                 bits = snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0);
1006                 bits |= basic;
1007                 snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, bits);
1008                 break;
1009         case SNDRV_PCM_TRIGGER_STOP:
1010         case SNDRV_PCM_TRIGGER_SUSPEND:
1011                 bits = snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0);
1012                 bits &= ~basic;
1013                 snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, bits);
1014                 bits = snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0);
1015                 bits &= ~extended;
1016                 snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, bits);
1017                 break;
1018         default:
1019                 result = -EINVAL;
1020                 break;
1021         }
1022         return result;
1023 }
1024 
1025 /* trigger_capture callback */
1026 static int snd_ca0106_pcm_trigger_capture(struct snd_pcm_substream *substream,
1027                                     int cmd)
1028 {
1029         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1030         struct snd_pcm_runtime *runtime = substream->runtime;
1031         struct snd_ca0106_pcm *epcm = runtime->private_data;
1032         int channel = epcm->channel_id;
1033         int result = 0;
1034 
1035         switch (cmd) {
1036         case SNDRV_PCM_TRIGGER_START:
1037                 snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
1038                 snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
1039                 epcm->running = 1;
1040                 break;
1041         case SNDRV_PCM_TRIGGER_STOP:
1042                 snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
1043                 snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
1044                 epcm->running = 0;
1045                 break;
1046         default:
1047                 result = -EINVAL;
1048                 break;
1049         }
1050         return result;
1051 }
1052 
1053 /* pointer_playback callback */
1054 static snd_pcm_uframes_t
1055 snd_ca0106_pcm_pointer_playback(struct snd_pcm_substream *substream)
1056 {
1057         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1058         struct snd_pcm_runtime *runtime = substream->runtime;
1059         struct snd_ca0106_pcm *epcm = runtime->private_data;
1060         unsigned int ptr, prev_ptr;
1061         int channel = epcm->channel_id;
1062         int timeout = 10;
1063 
1064         if (!epcm->running)
1065                 return 0;
1066 
1067         prev_ptr = -1;
1068         do {
1069                 ptr = snd_ca0106_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
1070                 ptr = (ptr >> 3) * runtime->period_size;
1071                 ptr += bytes_to_frames(runtime,
1072                         snd_ca0106_ptr_read(emu, PLAYBACK_POINTER, channel));
1073                 if (ptr >= runtime->buffer_size)
1074                         ptr -= runtime->buffer_size;
1075                 if (prev_ptr == ptr)
1076                         return ptr;
1077                 prev_ptr = ptr;
1078         } while (--timeout);
1079         dev_warn(emu->card->dev, "ca0106: unstable DMA pointer!\n");
1080         return 0;
1081 }
1082 
1083 /* pointer_capture callback */
1084 static snd_pcm_uframes_t
1085 snd_ca0106_pcm_pointer_capture(struct snd_pcm_substream *substream)
1086 {
1087         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1088         struct snd_pcm_runtime *runtime = substream->runtime;
1089         struct snd_ca0106_pcm *epcm = runtime->private_data;
1090         snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
1091         int channel = epcm->channel_id;
1092 
1093         if (!epcm->running)
1094                 return 0;
1095 
1096         ptr1 = snd_ca0106_ptr_read(emu, CAPTURE_POINTER, channel);
1097         ptr2 = bytes_to_frames(runtime, ptr1);
1098         ptr=ptr2;
1099         if (ptr >= runtime->buffer_size)
1100                 ptr -= runtime->buffer_size;
1101         /*
1102         dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
1103                "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
1104                ptr1, ptr2, ptr, (int)runtime->buffer_size,
1105                (int)runtime->period_size, (int)runtime->frame_bits,
1106                (int)runtime->rate);
1107         */
1108         return ptr;
1109 }
1110 
1111 /* operators */
1112 static struct snd_pcm_ops snd_ca0106_playback_front_ops = {
1113         .open =        snd_ca0106_pcm_open_playback_front,
1114         .close =       snd_ca0106_pcm_close_playback,
1115         .ioctl =       snd_pcm_lib_ioctl,
1116         .hw_params =   snd_ca0106_pcm_hw_params_playback,
1117         .hw_free =     snd_ca0106_pcm_hw_free_playback,
1118         .prepare =     snd_ca0106_pcm_prepare_playback,
1119         .trigger =     snd_ca0106_pcm_trigger_playback,
1120         .pointer =     snd_ca0106_pcm_pointer_playback,
1121 };
1122 
1123 static struct snd_pcm_ops snd_ca0106_capture_0_ops = {
1124         .open =        snd_ca0106_pcm_open_0_capture,
1125         .close =       snd_ca0106_pcm_close_capture,
1126         .ioctl =       snd_pcm_lib_ioctl,
1127         .hw_params =   snd_ca0106_pcm_hw_params_capture,
1128         .hw_free =     snd_ca0106_pcm_hw_free_capture,
1129         .prepare =     snd_ca0106_pcm_prepare_capture,
1130         .trigger =     snd_ca0106_pcm_trigger_capture,
1131         .pointer =     snd_ca0106_pcm_pointer_capture,
1132 };
1133 
1134 static struct snd_pcm_ops snd_ca0106_capture_1_ops = {
1135         .open =        snd_ca0106_pcm_open_1_capture,
1136         .close =       snd_ca0106_pcm_close_capture,
1137         .ioctl =       snd_pcm_lib_ioctl,
1138         .hw_params =   snd_ca0106_pcm_hw_params_capture,
1139         .hw_free =     snd_ca0106_pcm_hw_free_capture,
1140         .prepare =     snd_ca0106_pcm_prepare_capture,
1141         .trigger =     snd_ca0106_pcm_trigger_capture,
1142         .pointer =     snd_ca0106_pcm_pointer_capture,
1143 };
1144 
1145 static struct snd_pcm_ops snd_ca0106_capture_2_ops = {
1146         .open =        snd_ca0106_pcm_open_2_capture,
1147         .close =       snd_ca0106_pcm_close_capture,
1148         .ioctl =       snd_pcm_lib_ioctl,
1149         .hw_params =   snd_ca0106_pcm_hw_params_capture,
1150         .hw_free =     snd_ca0106_pcm_hw_free_capture,
1151         .prepare =     snd_ca0106_pcm_prepare_capture,
1152         .trigger =     snd_ca0106_pcm_trigger_capture,
1153         .pointer =     snd_ca0106_pcm_pointer_capture,
1154 };
1155 
1156 static struct snd_pcm_ops snd_ca0106_capture_3_ops = {
1157         .open =        snd_ca0106_pcm_open_3_capture,
1158         .close =       snd_ca0106_pcm_close_capture,
1159         .ioctl =       snd_pcm_lib_ioctl,
1160         .hw_params =   snd_ca0106_pcm_hw_params_capture,
1161         .hw_free =     snd_ca0106_pcm_hw_free_capture,
1162         .prepare =     snd_ca0106_pcm_prepare_capture,
1163         .trigger =     snd_ca0106_pcm_trigger_capture,
1164         .pointer =     snd_ca0106_pcm_pointer_capture,
1165 };
1166 
1167 static struct snd_pcm_ops snd_ca0106_playback_center_lfe_ops = {
1168         .open =         snd_ca0106_pcm_open_playback_center_lfe,
1169         .close =        snd_ca0106_pcm_close_playback,
1170         .ioctl =        snd_pcm_lib_ioctl,
1171         .hw_params =    snd_ca0106_pcm_hw_params_playback,
1172         .hw_free =      snd_ca0106_pcm_hw_free_playback,
1173         .prepare =      snd_ca0106_pcm_prepare_playback,     
1174         .trigger =      snd_ca0106_pcm_trigger_playback,  
1175         .pointer =      snd_ca0106_pcm_pointer_playback, 
1176 };
1177 
1178 static struct snd_pcm_ops snd_ca0106_playback_unknown_ops = {
1179         .open =         snd_ca0106_pcm_open_playback_unknown,
1180         .close =        snd_ca0106_pcm_close_playback,
1181         .ioctl =        snd_pcm_lib_ioctl,
1182         .hw_params =    snd_ca0106_pcm_hw_params_playback,
1183         .hw_free =      snd_ca0106_pcm_hw_free_playback,
1184         .prepare =      snd_ca0106_pcm_prepare_playback,     
1185         .trigger =      snd_ca0106_pcm_trigger_playback,  
1186         .pointer =      snd_ca0106_pcm_pointer_playback, 
1187 };
1188 
1189 static struct snd_pcm_ops snd_ca0106_playback_rear_ops = {
1190         .open =         snd_ca0106_pcm_open_playback_rear,
1191         .close =        snd_ca0106_pcm_close_playback,
1192         .ioctl =        snd_pcm_lib_ioctl,
1193         .hw_params =    snd_ca0106_pcm_hw_params_playback,
1194                 .hw_free =      snd_ca0106_pcm_hw_free_playback,
1195         .prepare =      snd_ca0106_pcm_prepare_playback,     
1196         .trigger =      snd_ca0106_pcm_trigger_playback,  
1197         .pointer =      snd_ca0106_pcm_pointer_playback, 
1198 };
1199 
1200 
1201 static unsigned short snd_ca0106_ac97_read(struct snd_ac97 *ac97,
1202                                              unsigned short reg)
1203 {
1204         struct snd_ca0106 *emu = ac97->private_data;
1205         unsigned long flags;
1206         unsigned short val;
1207 
1208         spin_lock_irqsave(&emu->emu_lock, flags);
1209         outb(reg, emu->port + AC97ADDRESS);
1210         val = inw(emu->port + AC97DATA);
1211         spin_unlock_irqrestore(&emu->emu_lock, flags);
1212         return val;
1213 }
1214 
1215 static void snd_ca0106_ac97_write(struct snd_ac97 *ac97,
1216                                     unsigned short reg, unsigned short val)
1217 {
1218         struct snd_ca0106 *emu = ac97->private_data;
1219         unsigned long flags;
1220   
1221         spin_lock_irqsave(&emu->emu_lock, flags);
1222         outb(reg, emu->port + AC97ADDRESS);
1223         outw(val, emu->port + AC97DATA);
1224         spin_unlock_irqrestore(&emu->emu_lock, flags);
1225 }
1226 
1227 static int snd_ca0106_ac97(struct snd_ca0106 *chip)
1228 {
1229         struct snd_ac97_bus *pbus;
1230         struct snd_ac97_template ac97;
1231         int err;
1232         static struct snd_ac97_bus_ops ops = {
1233                 .write = snd_ca0106_ac97_write,
1234                 .read = snd_ca0106_ac97_read,
1235         };
1236   
1237         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
1238                 return err;
1239         pbus->no_vra = 1; /* we don't need VRA */
1240 
1241         memset(&ac97, 0, sizeof(ac97));
1242         ac97.private_data = chip;
1243         ac97.scaps = AC97_SCAP_NO_SPDIF;
1244         return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
1245 }
1246 
1247 static void ca0106_stop_chip(struct snd_ca0106 *chip);
1248 
1249 static int snd_ca0106_free(struct snd_ca0106 *chip)
1250 {
1251         if (chip->res_port != NULL) {
1252                 /* avoid access to already used hardware */
1253                 ca0106_stop_chip(chip);
1254         }
1255         if (chip->irq >= 0)
1256                 free_irq(chip->irq, chip);
1257         // release the data
1258 #if 1
1259         if (chip->buffer.area)
1260                 snd_dma_free_pages(&chip->buffer);
1261 #endif
1262 
1263         // release the i/o port
1264         release_and_free_resource(chip->res_port);
1265 
1266         pci_disable_device(chip->pci);
1267         kfree(chip);
1268         return 0;
1269 }
1270 
1271 static int snd_ca0106_dev_free(struct snd_device *device)
1272 {
1273         struct snd_ca0106 *chip = device->device_data;
1274         return snd_ca0106_free(chip);
1275 }
1276 
1277 static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id)
1278 {
1279         unsigned int status;
1280 
1281         struct snd_ca0106 *chip = dev_id;
1282         int i;
1283         int mask;
1284         unsigned int stat76;
1285         struct snd_ca0106_channel *pchannel;
1286 
1287         status = inl(chip->port + IPR);
1288         if (! status)
1289                 return IRQ_NONE;
1290 
1291         stat76 = snd_ca0106_ptr_read(chip, EXTENDED_INT, 0);
1292         /*
1293         dev_dbg(emu->card->dev, "interrupt status = 0x%08x, stat76=0x%08x\n",
1294                    status, stat76);
1295         dev_dbg(emu->card->dev, "ptr=0x%08x\n",
1296                    snd_ca0106_ptr_read(chip, PLAYBACK_POINTER, 0));
1297         */
1298         mask = 0x11; /* 0x1 for one half, 0x10 for the other half period. */
1299         for(i = 0; i < 4; i++) {
1300                 pchannel = &(chip->playback_channels[i]);
1301                 if (stat76 & mask) {
1302 /* FIXME: Select the correct substream for period elapsed */
1303                         if(pchannel->use) {
1304                                 snd_pcm_period_elapsed(pchannel->epcm->substream);
1305                                 /* dev_dbg(emu->card->dev, "interrupt [%d] used\n", i); */
1306                         }
1307                 }
1308                 /*
1309                 dev_dbg(emu->card->dev, "channel=%p\n", pchannel);
1310                 dev_dbg(emu->card->dev, "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1311                 */
1312                 mask <<= 1;
1313         }
1314         mask = 0x110000; /* 0x1 for one half, 0x10 for the other half period. */
1315         for(i = 0; i < 4; i++) {
1316                 pchannel = &(chip->capture_channels[i]);
1317                 if (stat76 & mask) {
1318 /* FIXME: Select the correct substream for period elapsed */
1319                         if(pchannel->use) {
1320                                 snd_pcm_period_elapsed(pchannel->epcm->substream);
1321                                 /* dev_dbg(emu->card->dev, "interrupt [%d] used\n", i); */
1322                         }
1323                 }
1324                 /*
1325                 dev_dbg(emu->card->dev, "channel=%p\n", pchannel);
1326                 dev_dbg(emu->card->dev, "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1327                 */
1328                 mask <<= 1;
1329         }
1330 
1331         snd_ca0106_ptr_write(chip, EXTENDED_INT, 0, stat76);
1332 
1333         if (chip->midi.dev_id &&
1334             (status & (chip->midi.ipr_tx|chip->midi.ipr_rx))) {
1335                 if (chip->midi.interrupt)
1336                         chip->midi.interrupt(&chip->midi, status);
1337                 else
1338                         chip->midi.interrupt_disable(&chip->midi, chip->midi.tx_enable | chip->midi.rx_enable);
1339         }
1340 
1341         // acknowledge the interrupt if necessary
1342         outl(status, chip->port+IPR);
1343 
1344         return IRQ_HANDLED;
1345 }
1346 
1347 static const struct snd_pcm_chmap_elem surround_map[] = {
1348         { .channels = 2,
1349           .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
1350         { }
1351 };
1352 
1353 static const struct snd_pcm_chmap_elem clfe_map[] = {
1354         { .channels = 2,
1355           .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
1356         { }
1357 };
1358 
1359 static const struct snd_pcm_chmap_elem side_map[] = {
1360         { .channels = 2,
1361           .map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
1362         { }
1363 };
1364 
1365 static int snd_ca0106_pcm(struct snd_ca0106 *emu, int device)
1366 {
1367         struct snd_pcm *pcm;
1368         struct snd_pcm_substream *substream;
1369         const struct snd_pcm_chmap_elem *map = NULL;
1370         int err;
1371   
1372         err = snd_pcm_new(emu->card, "ca0106", device, 1, 1, &pcm);
1373         if (err < 0)
1374                 return err;
1375   
1376         pcm->private_data = emu;
1377 
1378         switch (device) {
1379         case 0:
1380           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_front_ops);
1381           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_0_ops);
1382           map = snd_pcm_std_chmaps;
1383           break;
1384         case 1:
1385           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_rear_ops);
1386           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_1_ops);
1387           map = surround_map;
1388           break;
1389         case 2:
1390           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_center_lfe_ops);
1391           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_2_ops);
1392           map = clfe_map;
1393           break;
1394         case 3:
1395           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_unknown_ops);
1396           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_3_ops);
1397           map = side_map;
1398           break;
1399         }
1400 
1401         pcm->info_flags = 0;
1402         strcpy(pcm->name, "CA0106");
1403 
1404         for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; 
1405             substream; 
1406             substream = substream->next) {
1407                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
1408                                                          SNDRV_DMA_TYPE_DEV, 
1409                                                          snd_dma_pci_data(emu->pci), 
1410                                                          64*1024, 64*1024)) < 0) /* FIXME: 32*1024 for sound buffer, between 32and64 for Periods table. */
1411                         return err;
1412         }
1413 
1414         for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; 
1415               substream; 
1416               substream = substream->next) {
1417                 if ((err = snd_pcm_lib_preallocate_pages(substream, 
1418                                                    SNDRV_DMA_TYPE_DEV, 
1419                                                    snd_dma_pci_data(emu->pci), 
1420                                                    64*1024, 64*1024)) < 0)
1421                         return err;
1422         }
1423   
1424         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
1425                                      1 << 2, NULL);
1426         if (err < 0)
1427                 return err;
1428 
1429         emu->pcm[device] = pcm;
1430   
1431         return 0;
1432 }
1433 
1434 #define SPI_REG(reg, value)     (((reg) << SPI_REG_SHIFT) | (value))
1435 static unsigned int spi_dac_init[] = {
1436         SPI_REG(SPI_LDA1_REG,   SPI_DA_BIT_0dB), /* 0dB dig. attenuation */
1437         SPI_REG(SPI_RDA1_REG,   SPI_DA_BIT_0dB),
1438         SPI_REG(SPI_PL_REG,     SPI_PL_BIT_L_L | SPI_PL_BIT_R_R | SPI_IZD_BIT),
1439         SPI_REG(SPI_FMT_REG,    SPI_FMT_BIT_I2S | SPI_IWL_BIT_24),
1440         SPI_REG(SPI_LDA2_REG,   SPI_DA_BIT_0dB),
1441         SPI_REG(SPI_RDA2_REG,   SPI_DA_BIT_0dB),
1442         SPI_REG(SPI_LDA3_REG,   SPI_DA_BIT_0dB),
1443         SPI_REG(SPI_RDA3_REG,   SPI_DA_BIT_0dB),
1444         SPI_REG(SPI_MASTDA_REG, SPI_DA_BIT_0dB),
1445         SPI_REG(9,              0x00),
1446         SPI_REG(SPI_MS_REG,     SPI_DACD0_BIT | SPI_DACD1_BIT | SPI_DACD2_BIT),
1447         SPI_REG(12,             0x00),
1448         SPI_REG(SPI_LDA4_REG,   SPI_DA_BIT_0dB),
1449         SPI_REG(SPI_RDA4_REG,   SPI_DA_BIT_0dB | SPI_DA_BIT_UPDATE),
1450         SPI_REG(SPI_DACD4_REG,  SPI_DACD4_BIT),
1451 };
1452 
1453 static unsigned int i2c_adc_init[][2] = {
1454         { 0x17, 0x00 }, /* Reset */
1455         { 0x07, 0x00 }, /* Timeout */
1456         { 0x0b, 0x22 },  /* Interface control */
1457         { 0x0c, 0x22 },  /* Master mode control */
1458         { 0x0d, 0x08 },  /* Powerdown control */
1459         { 0x0e, 0xcf },  /* Attenuation Left  0x01 = -103dB, 0xff = 24dB */
1460         { 0x0f, 0xcf },  /* Attenuation Right 0.5dB steps */
1461         { 0x10, 0x7b },  /* ALC Control 1 */
1462         { 0x11, 0x00 },  /* ALC Control 2 */
1463         { 0x12, 0x32 },  /* ALC Control 3 */
1464         { 0x13, 0x00 },  /* Noise gate control */
1465         { 0x14, 0xa6 },  /* Limiter control */
1466         { 0x15, ADC_MUX_LINEIN },  /* ADC Mixer control */
1467 };
1468 
1469 static void ca0106_init_chip(struct snd_ca0106 *chip, int resume)
1470 {
1471         int ch;
1472         unsigned int def_bits;
1473 
1474         outl(0, chip->port + INTE);
1475 
1476         /*
1477          *  Init to 0x02109204 :
1478          *  Clock accuracy    = 0     (1000ppm)
1479          *  Sample Rate       = 2     (48kHz)
1480          *  Audio Channel     = 1     (Left of 2)
1481          *  Source Number     = 0     (Unspecified)
1482          *  Generation Status = 1     (Original for Cat Code 12)
1483          *  Cat Code          = 12    (Digital Signal Mixer)
1484          *  Mode              = 0     (Mode 0)
1485          *  Emphasis          = 0     (None)
1486          *  CP                = 1     (Copyright unasserted)
1487          *  AN                = 0     (Audio data)
1488          *  P                 = 0     (Consumer)
1489          */
1490         def_bits =
1491                 SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1492                 SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1493                 SPCS_GENERATIONSTATUS | 0x00001200 |
1494                 0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT;
1495         if (!resume) {
1496                 chip->spdif_str_bits[0] = chip->spdif_bits[0] = def_bits;
1497                 chip->spdif_str_bits[1] = chip->spdif_bits[1] = def_bits;
1498                 chip->spdif_str_bits[2] = chip->spdif_bits[2] = def_bits;
1499                 chip->spdif_str_bits[3] = chip->spdif_bits[3] = def_bits;
1500         }
1501         /* Only SPCS1 has been tested */
1502         snd_ca0106_ptr_write(chip, SPCS1, 0, chip->spdif_str_bits[1]);
1503         snd_ca0106_ptr_write(chip, SPCS0, 0, chip->spdif_str_bits[0]);
1504         snd_ca0106_ptr_write(chip, SPCS2, 0, chip->spdif_str_bits[2]);
1505         snd_ca0106_ptr_write(chip, SPCS3, 0, chip->spdif_str_bits[3]);
1506 
1507         snd_ca0106_ptr_write(chip, PLAYBACK_MUTE, 0, 0x00fc0000);
1508         snd_ca0106_ptr_write(chip, CAPTURE_MUTE, 0, 0x00fc0000);
1509 
1510         /* Write 0x8000 to AC97_REC_GAIN to mute it. */
1511         outb(AC97_REC_GAIN, chip->port + AC97ADDRESS);
1512         outw(0x8000, chip->port + AC97DATA);
1513 #if 0 /* FIXME: what are these? */
1514         snd_ca0106_ptr_write(chip, SPCS0, 0, 0x2108006);
1515         snd_ca0106_ptr_write(chip, 0x42, 0, 0x2108006);
1516         snd_ca0106_ptr_write(chip, 0x43, 0, 0x2108006);
1517         snd_ca0106_ptr_write(chip, 0x44, 0, 0x2108006);
1518 #endif
1519 
1520         /* OSS drivers set this. */
1521         /* snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0xf0f003f); */
1522 
1523         /* Analog or Digital output */
1524         snd_ca0106_ptr_write(chip, SPDIF_SELECT1, 0, 0xf);
1525         /* 0x0b000000 for digital, 0x000b0000 for analog, from win2000 drivers.
1526          * Use 0x000f0000 for surround71
1527          */
1528         snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0x000f0000);
1529 
1530         chip->spdif_enable = 0; /* Set digital SPDIF output off */
1531         /*snd_ca0106_ptr_write(chip, 0x45, 0, 0);*/ /* Analogue out */
1532         /*snd_ca0106_ptr_write(chip, 0x45, 0, 0xf00);*/ /* Digital out */
1533 
1534         /* goes to 0x40c80000 when doing SPDIF IN/OUT */
1535         snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 0, 0x40c81000);
1536         /* (Mute) CAPTURE feedback into PLAYBACK volume.
1537          * Only lower 16 bits matter.
1538          */
1539         snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 1, 0xffffffff);
1540         /* SPDIF IN Volume */
1541         snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 2, 0x30300000);
1542         /* SPDIF IN Volume, 0x70 = (vol & 0x3f) | 0x40 */
1543         snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 3, 0x00700000);
1544 
1545         snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING1, 0, 0x32765410);
1546         snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING2, 0, 0x76767676);
1547         snd_ca0106_ptr_write(chip, CAPTURE_ROUTING1, 0, 0x32765410);
1548         snd_ca0106_ptr_write(chip, CAPTURE_ROUTING2, 0, 0x76767676);
1549 
1550         for (ch = 0; ch < 4; ch++) {
1551                 /* Only high 16 bits matter */
1552                 snd_ca0106_ptr_write(chip, CAPTURE_VOLUME1, ch, 0x30303030);
1553                 snd_ca0106_ptr_write(chip, CAPTURE_VOLUME2, ch, 0x30303030);
1554 #if 0 /* Mute */
1555                 snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0x40404040);
1556                 snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0x40404040);
1557                 snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0xffffffff);
1558                 snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0xffffffff);
1559 #endif
1560         }
1561         if (chip->details->i2c_adc == 1) {
1562                 /* Select MIC, Line in, TAD in, AUX in */
1563                 snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4);
1564                 /* Default to CAPTURE_SOURCE to i2s in */
1565                 if (!resume)
1566                         chip->capture_source = 3;
1567         } else if (chip->details->ac97 == 1) {
1568                 /* Default to AC97 in */
1569                 snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x444400e4);
1570                 /* Default to CAPTURE_SOURCE to AC97 in */
1571                 if (!resume)
1572                         chip->capture_source = 4;
1573         } else {
1574                 /* Select MIC, Line in, TAD in, AUX in */
1575                 snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4);
1576                 /* Default to Set CAPTURE_SOURCE to i2s in */
1577                 if (!resume)
1578                         chip->capture_source = 3;
1579         }
1580 
1581         if (chip->details->gpio_type == 2) {
1582                 /* The SB0438 use GPIO differently. */
1583                 /* FIXME: Still need to find out what the other GPIO bits do.
1584                  * E.g. For digital spdif out.
1585                  */
1586                 outl(0x0, chip->port+GPIO);
1587                 /* outl(0x00f0e000, chip->port+GPIO); */ /* Analog */
1588                 outl(0x005f5301, chip->port+GPIO); /* Analog */
1589         } else if (chip->details->gpio_type == 1) {
1590                 /* The SB0410 and SB0413 use GPIO differently. */
1591                 /* FIXME: Still need to find out what the other GPIO bits do.
1592                  * E.g. For digital spdif out.
1593                  */
1594                 outl(0x0, chip->port+GPIO);
1595                 /* outl(0x00f0e000, chip->port+GPIO); */ /* Analog */
1596                 outl(0x005f5301, chip->port+GPIO); /* Analog */
1597         } else {
1598                 outl(0x0, chip->port+GPIO);
1599                 outl(0x005f03a3, chip->port+GPIO); /* Analog */
1600                 /* outl(0x005f02a2, chip->port+GPIO); */ /* SPDIF */
1601         }
1602         snd_ca0106_intr_enable(chip, 0x105); /* Win2000 uses 0x1e0 */
1603 
1604         /* outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG); */
1605         /* 0x1000 causes AC3 to fails. Maybe it effects 24 bit output. */
1606         /* outl(0x00001409, chip->port+HCFG); */
1607         /* outl(0x00000009, chip->port+HCFG); */
1608         /* AC97 2.0, Enable outputs. */
1609         outl(HCFG_AC97 | HCFG_AUDIOENABLE, chip->port+HCFG);
1610 
1611         if (chip->details->i2c_adc == 1) {
1612                 /* The SB0410 and SB0413 use I2C to control ADC. */
1613                 int size, n;
1614 
1615                 size = ARRAY_SIZE(i2c_adc_init);
1616                 /* dev_dbg(emu->card->dev, "I2C:array size=0x%x\n", size); */
1617                 for (n = 0; n < size; n++)
1618                         snd_ca0106_i2c_write(chip, i2c_adc_init[n][0],
1619                                              i2c_adc_init[n][1]);
1620                 for (n = 0; n < 4; n++) {
1621                         chip->i2c_capture_volume[n][0] = 0xcf;
1622                         chip->i2c_capture_volume[n][1] = 0xcf;
1623                 }
1624                 chip->i2c_capture_source = 2; /* Line in */
1625                 /* Enable Line-in capture. MIC in currently untested. */
1626                 /* snd_ca0106_i2c_write(chip, ADC_MUX, ADC_MUX_LINEIN); */
1627         }
1628 
1629         if (chip->details->spi_dac) {
1630                 /* The SB0570 use SPI to control DAC. */
1631                 int size, n;
1632 
1633                 size = ARRAY_SIZE(spi_dac_init);
1634                 for (n = 0; n < size; n++) {
1635                         int reg = spi_dac_init[n] >> SPI_REG_SHIFT;
1636 
1637                         snd_ca0106_spi_write(chip, spi_dac_init[n]);
1638                         if (reg < ARRAY_SIZE(chip->spi_dac_reg))
1639                                 chip->spi_dac_reg[reg] = spi_dac_init[n];
1640                 }
1641 
1642                 /* Enable front dac only */
1643                 snd_ca0106_pcm_power_dac(chip, PCM_FRONT_CHANNEL, 1);
1644         }
1645 }
1646 
1647 static void ca0106_stop_chip(struct snd_ca0106 *chip)
1648 {
1649         /* disable interrupts */
1650         snd_ca0106_ptr_write(chip, BASIC_INTERRUPT, 0, 0);
1651         outl(0, chip->port + INTE);
1652         snd_ca0106_ptr_write(chip, EXTENDED_INT_MASK, 0, 0);
1653         udelay(1000);
1654         /* disable audio */
1655         /* outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG); */
1656         outl(0, chip->port + HCFG);
1657         /* FIXME: We need to stop and DMA transfers here.
1658          *        But as I am not sure how yet, we cannot from the dma pages.
1659          * So we can fix: snd-malloc: Memory leak?  pages not freed = 8
1660          */
1661 }
1662 
1663 static int snd_ca0106_create(int dev, struct snd_card *card,
1664                                          struct pci_dev *pci,
1665                                          struct snd_ca0106 **rchip)
1666 {
1667         struct snd_ca0106 *chip;
1668         struct snd_ca0106_details *c;
1669         int err;
1670         static struct snd_device_ops ops = {
1671                 .dev_free = snd_ca0106_dev_free,
1672         };
1673 
1674         *rchip = NULL;
1675 
1676         err = pci_enable_device(pci);
1677         if (err < 0)
1678                 return err;
1679         if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 ||
1680             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) {
1681                 dev_err(card->dev, "error to set 32bit mask DMA\n");
1682                 pci_disable_device(pci);
1683                 return -ENXIO;
1684         }
1685 
1686         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1687         if (chip == NULL) {
1688                 pci_disable_device(pci);
1689                 return -ENOMEM;
1690         }
1691 
1692         chip->card = card;
1693         chip->pci = pci;
1694         chip->irq = -1;
1695 
1696         spin_lock_init(&chip->emu_lock);
1697 
1698         chip->port = pci_resource_start(pci, 0);
1699         chip->res_port = request_region(chip->port, 0x20, "snd_ca0106");
1700         if (!chip->res_port) {
1701                 snd_ca0106_free(chip);
1702                 dev_err(card->dev, "cannot allocate the port\n");
1703                 return -EBUSY;
1704         }
1705 
1706         if (request_irq(pci->irq, snd_ca0106_interrupt,
1707                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
1708                 snd_ca0106_free(chip);
1709                 dev_err(card->dev, "cannot grab irq\n");
1710                 return -EBUSY;
1711         }
1712         chip->irq = pci->irq;
1713 
1714         /* This stores the periods table. */
1715         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1716                                 1024, &chip->buffer) < 0) {
1717                 snd_ca0106_free(chip);
1718                 return -ENOMEM;
1719         }
1720 
1721         pci_set_master(pci);
1722         /* read serial */
1723         pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
1724         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
1725         dev_info(card->dev, "Model %04x Rev %08x Serial %08x\n",
1726                chip->model, pci->revision, chip->serial);
1727         strcpy(card->driver, "CA0106");
1728         strcpy(card->shortname, "CA0106");
1729 
1730         for (c = ca0106_chip_details; c->serial; c++) {
1731                 if (subsystem[dev]) {
1732                         if (c->serial == subsystem[dev])
1733                                 break;
1734                 } else if (c->serial == chip->serial)
1735                         break;
1736         }
1737         chip->details = c;
1738         if (subsystem[dev]) {
1739                 dev_info(card->dev, "Sound card name=%s, "
1740                        "subsystem=0x%x. Forced to subsystem=0x%x\n",
1741                        c->name, chip->serial, subsystem[dev]);
1742         }
1743 
1744         sprintf(card->longname, "%s at 0x%lx irq %i",
1745                 c->name, chip->port, chip->irq);
1746 
1747         ca0106_init_chip(chip, 0);
1748 
1749         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
1750         if (err < 0) {
1751                 snd_ca0106_free(chip);
1752                 return err;
1753         }
1754         *rchip = chip;
1755         return 0;
1756 }
1757 
1758 
1759 static void ca0106_midi_interrupt_enable(struct snd_ca_midi *midi, int intr)
1760 {
1761         snd_ca0106_intr_enable((struct snd_ca0106 *)(midi->dev_id), intr);
1762 }
1763 
1764 static void ca0106_midi_interrupt_disable(struct snd_ca_midi *midi, int intr)
1765 {
1766         snd_ca0106_intr_disable((struct snd_ca0106 *)(midi->dev_id), intr);
1767 }
1768 
1769 static unsigned char ca0106_midi_read(struct snd_ca_midi *midi, int idx)
1770 {
1771         return (unsigned char)snd_ca0106_ptr_read((struct snd_ca0106 *)(midi->dev_id),
1772                                                   midi->port + idx, 0);
1773 }
1774 
1775 static void ca0106_midi_write(struct snd_ca_midi *midi, int data, int idx)
1776 {
1777         snd_ca0106_ptr_write((struct snd_ca0106 *)(midi->dev_id), midi->port + idx, 0, data);
1778 }
1779 
1780 static struct snd_card *ca0106_dev_id_card(void *dev_id)
1781 {
1782         return ((struct snd_ca0106 *)dev_id)->card;
1783 }
1784 
1785 static int ca0106_dev_id_port(void *dev_id)
1786 {
1787         return ((struct snd_ca0106 *)dev_id)->port;
1788 }
1789 
1790 static int snd_ca0106_midi(struct snd_ca0106 *chip, unsigned int channel)
1791 {
1792         struct snd_ca_midi *midi;
1793         char *name;
1794         int err;
1795 
1796         if (channel == CA0106_MIDI_CHAN_B) {
1797                 name = "CA0106 MPU-401 (UART) B";
1798                 midi =  &chip->midi2;
1799                 midi->tx_enable = INTE_MIDI_TX_B;
1800                 midi->rx_enable = INTE_MIDI_RX_B;
1801                 midi->ipr_tx = IPR_MIDI_TX_B;
1802                 midi->ipr_rx = IPR_MIDI_RX_B;
1803                 midi->port = MIDI_UART_B_DATA;
1804         } else {
1805                 name = "CA0106 MPU-401 (UART)";
1806                 midi =  &chip->midi;
1807                 midi->tx_enable = INTE_MIDI_TX_A;
1808                 midi->rx_enable = INTE_MIDI_TX_B;
1809                 midi->ipr_tx = IPR_MIDI_TX_A;
1810                 midi->ipr_rx = IPR_MIDI_RX_A;
1811                 midi->port = MIDI_UART_A_DATA;
1812         }
1813 
1814         midi->reset = CA0106_MPU401_RESET;
1815         midi->enter_uart = CA0106_MPU401_ENTER_UART;
1816         midi->ack = CA0106_MPU401_ACK;
1817 
1818         midi->input_avail = CA0106_MIDI_INPUT_AVAIL;
1819         midi->output_ready = CA0106_MIDI_OUTPUT_READY;
1820 
1821         midi->channel = channel;
1822 
1823         midi->interrupt_enable = ca0106_midi_interrupt_enable;
1824         midi->interrupt_disable = ca0106_midi_interrupt_disable;
1825 
1826         midi->read = ca0106_midi_read;
1827         midi->write = ca0106_midi_write;
1828 
1829         midi->get_dev_id_card = ca0106_dev_id_card;
1830         midi->get_dev_id_port = ca0106_dev_id_port;
1831 
1832         midi->dev_id = chip;
1833         
1834         if ((err = ca_midi_init(chip, midi, 0, name)) < 0)
1835                 return err;
1836 
1837         return 0;
1838 }
1839 
1840 
1841 static int snd_ca0106_probe(struct pci_dev *pci,
1842                                         const struct pci_device_id *pci_id)
1843 {
1844         static int dev;
1845         struct snd_card *card;
1846         struct snd_ca0106 *chip;
1847         int i, err;
1848 
1849         if (dev >= SNDRV_CARDS)
1850                 return -ENODEV;
1851         if (!enable[dev]) {
1852                 dev++;
1853                 return -ENOENT;
1854         }
1855 
1856         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1857                            0, &card);
1858         if (err < 0)
1859                 return err;
1860 
1861         err = snd_ca0106_create(dev, card, pci, &chip);
1862         if (err < 0)
1863                 goto error;
1864         card->private_data = chip;
1865 
1866         for (i = 0; i < 4; i++) {
1867                 err = snd_ca0106_pcm(chip, i);
1868                 if (err < 0)
1869                         goto error;
1870         }
1871 
1872         if (chip->details->ac97 == 1) {
1873                 /* The SB0410 and SB0413 do not have an AC97 chip. */
1874                 err = snd_ca0106_ac97(chip);
1875                 if (err < 0)
1876                         goto error;
1877         }
1878         err = snd_ca0106_mixer(chip);
1879         if (err < 0)
1880                 goto error;
1881 
1882         dev_dbg(card->dev, "probe for MIDI channel A ...");
1883         err = snd_ca0106_midi(chip, CA0106_MIDI_CHAN_A);
1884         if (err < 0)
1885                 goto error;
1886         dev_dbg(card->dev, " done.\n");
1887 
1888 #ifdef CONFIG_PROC_FS
1889         snd_ca0106_proc_init(chip);
1890 #endif
1891 
1892         err = snd_card_register(card);
1893         if (err < 0)
1894                 goto error;
1895 
1896         pci_set_drvdata(pci, card);
1897         dev++;
1898         return 0;
1899 
1900  error:
1901         snd_card_free(card);
1902         return err;
1903 }
1904 
1905 static void snd_ca0106_remove(struct pci_dev *pci)
1906 {
1907         snd_card_free(pci_get_drvdata(pci));
1908 }
1909 
1910 #ifdef CONFIG_PM_SLEEP
1911 static int snd_ca0106_suspend(struct device *dev)
1912 {
1913         struct pci_dev *pci = to_pci_dev(dev);
1914         struct snd_card *card = dev_get_drvdata(dev);
1915         struct snd_ca0106 *chip = card->private_data;
1916         int i;
1917 
1918         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1919         for (i = 0; i < 4; i++)
1920                 snd_pcm_suspend_all(chip->pcm[i]);
1921         if (chip->details->ac97)
1922                 snd_ac97_suspend(chip->ac97);
1923         snd_ca0106_mixer_suspend(chip);
1924 
1925         ca0106_stop_chip(chip);
1926 
1927         pci_disable_device(pci);
1928         pci_save_state(pci);
1929         pci_set_power_state(pci, PCI_D3hot);
1930         return 0;
1931 }
1932 
1933 static int snd_ca0106_resume(struct device *dev)
1934 {
1935         struct pci_dev *pci = to_pci_dev(dev);
1936         struct snd_card *card = dev_get_drvdata(dev);
1937         struct snd_ca0106 *chip = card->private_data;
1938         int i;
1939 
1940         pci_set_power_state(pci, PCI_D0);
1941         pci_restore_state(pci);
1942 
1943         if (pci_enable_device(pci) < 0) {
1944                 snd_card_disconnect(card);
1945                 return -EIO;
1946         }
1947 
1948         pci_set_master(pci);
1949 
1950         ca0106_init_chip(chip, 1);
1951 
1952         if (chip->details->ac97)
1953                 snd_ac97_resume(chip->ac97);
1954         snd_ca0106_mixer_resume(chip);
1955         if (chip->details->spi_dac) {
1956                 for (i = 0; i < ARRAY_SIZE(chip->spi_dac_reg); i++)
1957                         snd_ca0106_spi_write(chip, chip->spi_dac_reg[i]);
1958         }
1959 
1960         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1961         return 0;
1962 }
1963 
1964 static SIMPLE_DEV_PM_OPS(snd_ca0106_pm, snd_ca0106_suspend, snd_ca0106_resume);
1965 #define SND_CA0106_PM_OPS       &snd_ca0106_pm
1966 #else
1967 #define SND_CA0106_PM_OPS       NULL
1968 #endif
1969 
1970 // PCI IDs
1971 static DEFINE_PCI_DEVICE_TABLE(snd_ca0106_ids) = {
1972         { PCI_VDEVICE(CREATIVE, 0x0007), 0 },   /* Audigy LS or Live 24bit */
1973         { 0, }
1974 };
1975 MODULE_DEVICE_TABLE(pci, snd_ca0106_ids);
1976 
1977 // pci_driver definition
1978 static struct pci_driver ca0106_driver = {
1979         .name = KBUILD_MODNAME,
1980         .id_table = snd_ca0106_ids,
1981         .probe = snd_ca0106_probe,
1982         .remove = snd_ca0106_remove,
1983         .driver = {
1984                 .pm = SND_CA0106_PM_OPS,
1985         },
1986 };
1987 
1988 module_pci_driver(ca0106_driver);
1989 

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