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TOMOYO Linux Cross Reference
Linux/sound/pci/ca0106/ca0106_main.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  *  Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
  4  *  Driver CA0106 chips. e.g. Sound Blaster Audigy LS and Live 24bit
  5  *  Version: 0.0.25
  6  *
  7  *  FEATURES currently supported:
  8  *    Front, Rear and Center/LFE.
  9  *    Surround40 and Surround51.
 10  *    Capture from MIC an LINE IN input.
 11  *    SPDIF digital playback of PCM stereo and AC3/DTS works.
 12  *    (One can use a standard mono mini-jack to one RCA plugs cable.
 13  *     or one can use a standard stereo mini-jack to two RCA plugs cable.
 14  *     Plug one of the RCA plugs into the Coax input of the external decoder/receiver.)
 15  *    ( In theory one could output 3 different AC3 streams at once, to 3 different SPDIF outputs. )
 16  *    Notes on how to capture sound:
 17  *      The AC97 is used in the PLAYBACK direction.
 18  *      The output from the AC97 chip, instead of reaching the speakers, is fed into the Philips 1361T ADC.
 19  *      So, to record from the MIC, set the MIC Playback volume to max,
 20  *      unmute the MIC and turn up the MASTER Playback volume.
 21  *      So, to prevent feedback when capturing, minimise the "Capture feedback into Playback" volume.
 22  *   
 23  *    The only playback controls that currently do anything are: -
 24  *    Analog Front
 25  *    Analog Rear
 26  *    Analog Center/LFE
 27  *    SPDIF Front
 28  *    SPDIF Rear
 29  *    SPDIF Center/LFE
 30  *   
 31  *    For capture from Mic in or Line in.
 32  *    Digital/Analog ( switch must be in Analog mode for CAPTURE. )
 33  * 
 34  *    CAPTURE feedback into PLAYBACK
 35  * 
 36  *  Changelog:
 37  *    Support interrupts per period.
 38  *    Removed noise from Center/LFE channel when in Analog mode.
 39  *    Rename and remove mixer controls.
 40  *  0.0.6
 41  *    Use separate card based DMA buffer for periods table list.
 42  *  0.0.7
 43  *    Change remove and rename ctrls into lists.
 44  *  0.0.8
 45  *    Try to fix capture sources.
 46  *  0.0.9
 47  *    Fix AC3 output.
 48  *    Enable S32_LE format support.
 49  *  0.0.10
 50  *    Enable playback 48000 and 96000 rates. (Rates other that these do not work, even with "plug:front".)
 51  *  0.0.11
 52  *    Add Model name recognition.
 53  *  0.0.12
 54  *    Correct interrupt timing. interrupt at end of period, instead of in the middle of a playback period.
 55  *    Remove redundent "voice" handling.
 56  *  0.0.13
 57  *    Single trigger call for multi channels.
 58  *  0.0.14
 59  *    Set limits based on what the sound card hardware can do.
 60  *    playback periods_min=2, periods_max=8
 61  *    capture hw constraints require period_size = n * 64 bytes.
 62  *    playback hw constraints require period_size = n * 64 bytes.
 63  *  0.0.15
 64  *    Minor updates.
 65  *  0.0.16
 66  *    Implement 192000 sample rate.
 67  *  0.0.17
 68  *    Add support for SB0410 and SB0413.
 69  *  0.0.18
 70  *    Modified Copyright message.
 71  *  0.0.19
 72  *    Finally fix support for SB Live 24 bit. SB0410 and SB0413.
 73  *    The output codec needs resetting, otherwise all output is muted.
 74  *  0.0.20
 75  *    Merge "pci_disable_device(pci);" fixes.
 76  *  0.0.21
 77  *    Add 4 capture channels. (SPDIF only comes in on channel 0. )
 78  *    Add SPDIF capture using optional digital I/O module for SB Live 24bit. (Analog capture does not yet work.)
 79  *  0.0.22
 80  *    Add support for MSI K8N Diamond Motherboard with onboard SB Live 24bit without AC97. From kiksen, bug #901
 81  *  0.0.23
 82  *    Implement support for Line-in capture on SB Live 24bit.
 83  *  0.0.24
 84  *    Add support for mute control on SB Live 24bit (cards w/ SPI DAC)
 85  *  0.0.25
 86  *    Powerdown SPI DAC channels when not in use
 87  *
 88  *  BUGS:
 89  *    Some stability problems when unloading the snd-ca0106 kernel module.
 90  *    --
 91  *
 92  *  TODO:
 93  *    4 Capture channels, only one implemented so far.
 94  *    Other capture rates apart from 48khz not implemented.
 95  *    MIDI
 96  *    --
 97  *  GENERAL INFO:
 98  *    Model: SB0310
 99  *    P17 Chip: CA0106-DAT
100  *    AC97 Codec: STAC 9721
101  *    ADC: Philips 1361T (Stereo 24bit)
102  *    DAC: WM8746EDS (6-channel, 24bit, 192Khz)
103  *
104  *  GENERAL INFO:
105  *    Model: SB0410
106  *    P17 Chip: CA0106-DAT
107  *    AC97 Codec: None
108  *    ADC: WM8775EDS (4 Channel)
109  *    DAC: CS4382 (114 dB, 24-Bit, 192 kHz, 8-Channel D/A Converter with DSD Support)
110  *    SPDIF Out control switches between Mic in and SPDIF out.
111  *    No sound out or mic input working yet.
112  * 
113  *  GENERAL INFO:
114  *    Model: SB0413
115  *    P17 Chip: CA0106-DAT
116  *    AC97 Codec: None.
117  *    ADC: Unknown
118  *    DAC: Unknown
119  *    Trying to handle it like the SB0410.
120  *
121  *  This code was initially based on code from ALSA's emu10k1x.c which is:
122  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
123  */
124 #include <linux/delay.h>
125 #include <linux/init.h>
126 #include <linux/interrupt.h>
127 #include <linux/pci.h>
128 #include <linux/slab.h>
129 #include <linux/module.h>
130 #include <linux/dma-mapping.h>
131 #include <sound/core.h>
132 #include <sound/initval.h>
133 #include <sound/pcm.h>
134 #include <sound/ac97_codec.h>
135 #include <sound/info.h>
136 
137 MODULE_AUTHOR("James Courtier-Dutton <James@superbug.demon.co.uk>");
138 MODULE_DESCRIPTION("CA0106");
139 MODULE_LICENSE("GPL");
140 
141 // module parameters (see "Module Parameters")
142 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
143 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
144 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
145 static uint subsystem[SNDRV_CARDS]; /* Force card subsystem model */
146 
147 module_param_array(index, int, NULL, 0444);
148 MODULE_PARM_DESC(index, "Index value for the CA0106 soundcard.");
149 module_param_array(id, charp, NULL, 0444);
150 MODULE_PARM_DESC(id, "ID string for the CA0106 soundcard.");
151 module_param_array(enable, bool, NULL, 0444);
152 MODULE_PARM_DESC(enable, "Enable the CA0106 soundcard.");
153 module_param_array(subsystem, uint, NULL, 0444);
154 MODULE_PARM_DESC(subsystem, "Force card subsystem model.");
155 
156 #include "ca0106.h"
157 
158 static const struct snd_ca0106_details ca0106_chip_details[] = {
159          /* Sound Blaster X-Fi Extreme Audio. This does not have an AC97. 53SB079000000 */
160          /* It is really just a normal SB Live 24bit. */
161          /* Tested:
162           * See ALSA bug#3251
163           */
164          { .serial = 0x10131102,
165            .name   = "X-Fi Extreme Audio [SBxxxx]",
166            .gpio_type = 1,
167            .i2c_adc = 1 } ,
168          /* Sound Blaster X-Fi Extreme Audio. This does not have an AC97. 53SB079000000 */
169          /* It is really just a normal SB Live 24bit. */
170          /*
171           * CTRL:CA0111-WTLF
172           * ADC: WM8775SEDS
173           * DAC: CS4382-KQZ
174           */
175          /* Tested:
176           * Playback on front, rear, center/lfe speakers
177           * Capture from Mic in.
178           * Not-Tested:
179           * Capture from Line in.
180           * Playback to digital out.
181           */
182          { .serial = 0x10121102,
183            .name   = "X-Fi Extreme Audio [SB0790]",
184            .gpio_type = 1,
185            .i2c_adc = 1 } ,
186          /* New Dell Sound Blaster Live! 7.1 24bit. This does not have an AC97.  */
187          /* AudigyLS[SB0310] */
188          { .serial = 0x10021102,
189            .name   = "AudigyLS [SB0310]",
190            .ac97   = 1 } , 
191          /* Unknown AudigyLS that also says SB0310 on it */
192          { .serial = 0x10051102,
193            .name   = "AudigyLS [SB0310b]",
194            .ac97   = 1 } ,
195          /* New Sound Blaster Live! 7.1 24bit. This does not have an AC97. 53SB041000001 */
196          { .serial = 0x10061102,
197            .name   = "Live! 7.1 24bit [SB0410]",
198            .gpio_type = 1,
199            .i2c_adc = 1 } ,
200          /* New Dell Sound Blaster Live! 7.1 24bit. This does not have an AC97.  */
201          { .serial = 0x10071102,
202            .name   = "Live! 7.1 24bit [SB0413]",
203            .gpio_type = 1,
204            .i2c_adc = 1 } ,
205          /* New Audigy SE. Has a different DAC. */
206          /* SB0570:
207           * CTRL:CA0106-DAT
208           * ADC: WM8775EDS
209           * DAC: WM8768GEDS
210           */
211          { .serial = 0x100a1102,
212            .name   = "Audigy SE [SB0570]",
213            .gpio_type = 1,
214            .i2c_adc = 1,
215            .spi_dac = 0x4021 } ,
216          /* New Audigy LS. Has a different DAC. */
217          /* SB0570:
218           * CTRL:CA0106-DAT
219           * ADC: WM8775EDS
220           * DAC: WM8768GEDS
221           */
222          { .serial = 0x10111102,
223            .name   = "Audigy SE OEM [SB0570a]",
224            .gpio_type = 1,
225            .i2c_adc = 1,
226            .spi_dac = 0x4021 } ,
227         /* Sound Blaster 5.1vx
228          * Tested: Playback on front, rear, center/lfe speakers
229          * Not-Tested: Capture
230          */
231         { .serial = 0x10041102,
232           .name   = "Sound Blaster 5.1vx [SB1070]",
233           .gpio_type = 1,
234           .i2c_adc = 0,
235           .spi_dac = 0x0124
236          } ,
237          /* MSI K8N Diamond Motherboard with onboard SB Live 24bit without AC97 */
238          /* SB0438
239           * CTRL:CA0106-DAT
240           * ADC: WM8775SEDS
241           * DAC: CS4382-KQZ
242           */
243          { .serial = 0x10091462,
244            .name   = "MSI K8N Diamond MB [SB0438]",
245            .gpio_type = 2,
246            .i2c_adc = 1 } ,
247          /* MSI K8N Diamond PLUS MB */
248          { .serial = 0x10091102,
249            .name   = "MSI K8N Diamond MB",
250            .gpio_type = 2,
251            .i2c_adc = 1,
252            .spi_dac = 0x4021 } ,
253         /* Giga-byte GA-G1975X mobo
254          * Novell bnc#395807
255          */
256         /* FIXME: the GPIO and I2C setting aren't tested well */
257         { .serial = 0x1458a006,
258           .name = "Giga-byte GA-G1975X",
259           .gpio_type = 1,
260           .i2c_adc = 1 },
261          /* Shuttle XPC SD31P which has an onboard Creative Labs
262           * Sound Blaster Live! 24-bit EAX
263           * high-definition 7.1 audio processor".
264           * Added using info from andrewvegan in alsa bug #1298
265           */
266          { .serial = 0x30381297,
267            .name   = "Shuttle XPC SD31P [SD31P]",
268            .gpio_type = 1,
269            .i2c_adc = 1 } ,
270         /* Shuttle XPC SD11G5 which has an onboard Creative Labs
271          * Sound Blaster Live! 24-bit EAX
272          * high-definition 7.1 audio processor".
273          * Fixes ALSA bug#1600
274          */
275         { .serial = 0x30411297,
276           .name = "Shuttle XPC SD11G5 [SD11G5]",
277           .gpio_type = 1,
278           .i2c_adc = 1 } ,
279          { .serial = 0,
280            .name   = "AudigyLS [Unknown]" }
281 };
282 
283 /* hardware definition */
284 static const struct snd_pcm_hardware snd_ca0106_playback_hw = {
285         .info =                 SNDRV_PCM_INFO_MMAP | 
286                                 SNDRV_PCM_INFO_INTERLEAVED |
287                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
288                                 SNDRV_PCM_INFO_MMAP_VALID |
289                                 SNDRV_PCM_INFO_SYNC_START,
290         .formats =              SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
291         .rates =                (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |
292                                  SNDRV_PCM_RATE_192000),
293         .rate_min =             48000,
294         .rate_max =             192000,
295         .channels_min =         2,  //1,
296         .channels_max =         2,  //6,
297         .buffer_bytes_max =     ((65536 - 64) * 8),
298         .period_bytes_min =     64,
299         .period_bytes_max =     (65536 - 64),
300         .periods_min =          2,
301         .periods_max =          8,
302         .fifo_size =            0,
303 };
304 
305 static const struct snd_pcm_hardware snd_ca0106_capture_hw = {
306         .info =                 (SNDRV_PCM_INFO_MMAP | 
307                                  SNDRV_PCM_INFO_INTERLEAVED |
308                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
309                                  SNDRV_PCM_INFO_MMAP_VALID),
310         .formats =              SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
311 #if 0 /* FIXME: looks like 44.1kHz capture causes noisy output on 48kHz */
312         .rates =                (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
313                                  SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),
314         .rate_min =             44100,
315 #else
316         .rates =                (SNDRV_PCM_RATE_48000 |
317                                  SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000),
318         .rate_min =             48000,
319 #endif /* FIXME */
320         .rate_max =             192000,
321         .channels_min =         2,
322         .channels_max =         2,
323         .buffer_bytes_max =     65536 - 128,
324         .period_bytes_min =     64,
325         .period_bytes_max =     32768 - 64,
326         .periods_min =          2,
327         .periods_max =          2,
328         .fifo_size =            0,
329 };
330 
331 unsigned int snd_ca0106_ptr_read(struct snd_ca0106 * emu, 
332                                           unsigned int reg, 
333                                           unsigned int chn)
334 {
335         unsigned long flags;
336         unsigned int regptr, val;
337   
338         regptr = (reg << 16) | chn;
339 
340         spin_lock_irqsave(&emu->emu_lock, flags);
341         outl(regptr, emu->port + CA0106_PTR);
342         val = inl(emu->port + CA0106_DATA);
343         spin_unlock_irqrestore(&emu->emu_lock, flags);
344         return val;
345 }
346 
347 void snd_ca0106_ptr_write(struct snd_ca0106 *emu, 
348                                    unsigned int reg, 
349                                    unsigned int chn, 
350                                    unsigned int data)
351 {
352         unsigned int regptr;
353         unsigned long flags;
354 
355         regptr = (reg << 16) | chn;
356 
357         spin_lock_irqsave(&emu->emu_lock, flags);
358         outl(regptr, emu->port + CA0106_PTR);
359         outl(data, emu->port + CA0106_DATA);
360         spin_unlock_irqrestore(&emu->emu_lock, flags);
361 }
362 
363 int snd_ca0106_spi_write(struct snd_ca0106 * emu,
364                                    unsigned int data)
365 {
366         unsigned int reset, set;
367         unsigned int reg, tmp;
368         int n, result;
369         reg = SPI;
370         if (data > 0xffff) /* Only 16bit values allowed */
371                 return 1;
372         tmp = snd_ca0106_ptr_read(emu, reg, 0);
373         reset = (tmp & ~0x3ffff) | 0x20000; /* Set xxx20000 */
374         set = reset | 0x10000; /* Set xxx1xxxx */
375         snd_ca0106_ptr_write(emu, reg, 0, reset | data);
376         tmp = snd_ca0106_ptr_read(emu, reg, 0); /* write post */
377         snd_ca0106_ptr_write(emu, reg, 0, set | data);
378         result = 1;
379         /* Wait for status bit to return to 0 */
380         for (n = 0; n < 100; n++) {
381                 udelay(10);
382                 tmp = snd_ca0106_ptr_read(emu, reg, 0);
383                 if (!(tmp & 0x10000)) {
384                         result = 0;
385                         break;
386                 }
387         }
388         if (result) /* Timed out */
389                 return 1;
390         snd_ca0106_ptr_write(emu, reg, 0, reset | data);
391         tmp = snd_ca0106_ptr_read(emu, reg, 0); /* Write post */
392         return 0;
393 }
394 
395 /* The ADC does not support i2c read, so only write is implemented */
396 int snd_ca0106_i2c_write(struct snd_ca0106 *emu,
397                                 u32 reg,
398                                 u32 value)
399 {
400         u32 tmp;
401         int timeout = 0;
402         int status;
403         int retry;
404         if ((reg > 0x7f) || (value > 0x1ff)) {
405                 dev_err(emu->card->dev, "i2c_write: invalid values.\n");
406                 return -EINVAL;
407         }
408 
409         tmp = reg << 25 | value << 16;
410         /*
411         dev_dbg(emu->card->dev, "I2C-write:reg=0x%x, value=0x%x\n", reg, value);
412         */
413         /* Not sure what this I2C channel controls. */
414         /* snd_ca0106_ptr_write(emu, I2C_D0, 0, tmp); */
415 
416         /* This controls the I2C connected to the WM8775 ADC Codec */
417         snd_ca0106_ptr_write(emu, I2C_D1, 0, tmp);
418 
419         for (retry = 0; retry < 10; retry++) {
420                 /* Send the data to i2c */
421                 //tmp = snd_ca0106_ptr_read(emu, I2C_A, 0);
422                 //tmp = tmp & ~(I2C_A_ADC_READ|I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD_MASK);
423                 tmp = 0;
424                 tmp = tmp | (I2C_A_ADC_LAST|I2C_A_ADC_START|I2C_A_ADC_ADD);
425                 snd_ca0106_ptr_write(emu, I2C_A, 0, tmp);
426 
427                 /* Wait till the transaction ends */
428                 while (1) {
429                         status = snd_ca0106_ptr_read(emu, I2C_A, 0);
430                         /*dev_dbg(emu->card->dev, "I2C:status=0x%x\n", status);*/
431                         timeout++;
432                         if ((status & I2C_A_ADC_START) == 0)
433                                 break;
434 
435                         if (timeout > 1000)
436                                 break;
437                 }
438                 //Read back and see if the transaction is successful
439                 if ((status & I2C_A_ADC_ABORT) == 0)
440                         break;
441         }
442 
443         if (retry == 10) {
444                 dev_err(emu->card->dev, "Writing to ADC failed!\n");
445                 return -EINVAL;
446         }
447     
448         return 0;
449 }
450 
451 
452 static void snd_ca0106_intr_enable(struct snd_ca0106 *emu, unsigned int intrenb)
453 {
454         unsigned long flags;
455         unsigned int intr_enable;
456 
457         spin_lock_irqsave(&emu->emu_lock, flags);
458         intr_enable = inl(emu->port + CA0106_INTE) | intrenb;
459         outl(intr_enable, emu->port + CA0106_INTE);
460         spin_unlock_irqrestore(&emu->emu_lock, flags);
461 }
462 
463 static void snd_ca0106_intr_disable(struct snd_ca0106 *emu, unsigned int intrenb)
464 {
465         unsigned long flags;
466         unsigned int intr_enable;
467 
468         spin_lock_irqsave(&emu->emu_lock, flags);
469         intr_enable = inl(emu->port + CA0106_INTE) & ~intrenb;
470         outl(intr_enable, emu->port + CA0106_INTE);
471         spin_unlock_irqrestore(&emu->emu_lock, flags);
472 }
473 
474 
475 static void snd_ca0106_pcm_free_substream(struct snd_pcm_runtime *runtime)
476 {
477         kfree(runtime->private_data);
478 }
479 
480 static const int spi_dacd_reg[] = {
481         SPI_DACD0_REG,
482         SPI_DACD1_REG,
483         SPI_DACD2_REG,
484         0,
485         SPI_DACD4_REG,
486 };
487 static const int spi_dacd_bit[] = {
488         SPI_DACD0_BIT,
489         SPI_DACD1_BIT,
490         SPI_DACD2_BIT,
491         0,
492         SPI_DACD4_BIT,
493 };
494 
495 static void restore_spdif_bits(struct snd_ca0106 *chip, int idx)
496 {
497         if (chip->spdif_str_bits[idx] != chip->spdif_bits[idx]) {
498                 chip->spdif_str_bits[idx] = chip->spdif_bits[idx];
499                 snd_ca0106_ptr_write(chip, SPCS0 + idx, 0,
500                                      chip->spdif_str_bits[idx]);
501         }
502 }
503 
504 static int snd_ca0106_channel_dac(struct snd_ca0106 *chip,
505                                   const struct snd_ca0106_details *details,
506                                   int channel_id)
507 {
508         switch (channel_id) {
509         case PCM_FRONT_CHANNEL:
510                 return (details->spi_dac & 0xf000) >> (4 * 3);
511         case PCM_REAR_CHANNEL:
512                 return (details->spi_dac & 0x0f00) >> (4 * 2);
513         case PCM_CENTER_LFE_CHANNEL:
514                 return (details->spi_dac & 0x00f0) >> (4 * 1);
515         case PCM_UNKNOWN_CHANNEL:
516                 return (details->spi_dac & 0x000f) >> (4 * 0);
517         default:
518                 dev_dbg(chip->card->dev, "ca0106: unknown channel_id %d\n",
519                            channel_id);
520         }
521         return 0;
522 }
523 
524 static int snd_ca0106_pcm_power_dac(struct snd_ca0106 *chip, int channel_id,
525                                     int power)
526 {
527         if (chip->details->spi_dac) {
528                 const int dac = snd_ca0106_channel_dac(chip, chip->details,
529                                                        channel_id);
530                 const int reg = spi_dacd_reg[dac];
531                 const int bit = spi_dacd_bit[dac];
532 
533                 if (power)
534                         /* Power up */
535                         chip->spi_dac_reg[reg] &= ~bit;
536                 else
537                         /* Power down */
538                         chip->spi_dac_reg[reg] |= bit;
539                 if (snd_ca0106_spi_write(chip, chip->spi_dac_reg[reg]) != 0)
540                         return -ENXIO;
541         }
542         return 0;
543 }
544 
545 /* open_playback callback */
546 static int snd_ca0106_pcm_open_playback_channel(struct snd_pcm_substream *substream,
547                                                 int channel_id)
548 {
549         struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
550         struct snd_ca0106_channel *channel = &(chip->playback_channels[channel_id]);
551         struct snd_ca0106_pcm *epcm;
552         struct snd_pcm_runtime *runtime = substream->runtime;
553         int err;
554 
555         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
556 
557         if (epcm == NULL)
558                 return -ENOMEM;
559         epcm->emu = chip;
560         epcm->substream = substream;
561         epcm->channel_id=channel_id;
562   
563         runtime->private_data = epcm;
564         runtime->private_free = snd_ca0106_pcm_free_substream;
565   
566         runtime->hw = snd_ca0106_playback_hw;
567 
568         channel->emu = chip;
569         channel->number = channel_id;
570 
571         channel->use = 1;
572         /*
573         dev_dbg(chip->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
574                channel_id, chip, channel);
575         */
576         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
577         channel->epcm = epcm;
578         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
579         if (err < 0)
580                 return err;
581         err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
582         if (err < 0)
583                 return err;
584         snd_pcm_set_sync(substream);
585 
586         /* Front channel dac should already be on */
587         if (channel_id != PCM_FRONT_CHANNEL) {
588                 err = snd_ca0106_pcm_power_dac(chip, channel_id, 1);
589                 if (err < 0)
590                         return err;
591         }
592 
593         restore_spdif_bits(chip, channel_id);
594 
595         return 0;
596 }
597 
598 /* close callback */
599 static int snd_ca0106_pcm_close_playback(struct snd_pcm_substream *substream)
600 {
601         struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
602         struct snd_pcm_runtime *runtime = substream->runtime;
603         struct snd_ca0106_pcm *epcm = runtime->private_data;
604         chip->playback_channels[epcm->channel_id].use = 0;
605 
606         restore_spdif_bits(chip, epcm->channel_id);
607 
608         /* Front channel dac should stay on */
609         if (epcm->channel_id != PCM_FRONT_CHANNEL) {
610                 int err;
611                 err = snd_ca0106_pcm_power_dac(chip, epcm->channel_id, 0);
612                 if (err < 0)
613                         return err;
614         }
615 
616         /* FIXME: maybe zero others */
617         return 0;
618 }
619 
620 static int snd_ca0106_pcm_open_playback_front(struct snd_pcm_substream *substream)
621 {
622         return snd_ca0106_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
623 }
624 
625 static int snd_ca0106_pcm_open_playback_center_lfe(struct snd_pcm_substream *substream)
626 {
627         return snd_ca0106_pcm_open_playback_channel(substream, PCM_CENTER_LFE_CHANNEL);
628 }
629 
630 static int snd_ca0106_pcm_open_playback_unknown(struct snd_pcm_substream *substream)
631 {
632         return snd_ca0106_pcm_open_playback_channel(substream, PCM_UNKNOWN_CHANNEL);
633 }
634 
635 static int snd_ca0106_pcm_open_playback_rear(struct snd_pcm_substream *substream)
636 {
637         return snd_ca0106_pcm_open_playback_channel(substream, PCM_REAR_CHANNEL);
638 }
639 
640 /* open_capture callback */
641 static int snd_ca0106_pcm_open_capture_channel(struct snd_pcm_substream *substream,
642                                                int channel_id)
643 {
644         struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
645         struct snd_ca0106_channel *channel = &(chip->capture_channels[channel_id]);
646         struct snd_ca0106_pcm *epcm;
647         struct snd_pcm_runtime *runtime = substream->runtime;
648         int err;
649 
650         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
651         if (!epcm)
652                 return -ENOMEM;
653 
654         epcm->emu = chip;
655         epcm->substream = substream;
656         epcm->channel_id=channel_id;
657   
658         runtime->private_data = epcm;
659         runtime->private_free = snd_ca0106_pcm_free_substream;
660   
661         runtime->hw = snd_ca0106_capture_hw;
662 
663         channel->emu = chip;
664         channel->number = channel_id;
665 
666         channel->use = 1;
667         /*
668         dev_dbg(chip->card->dev, "open:channel_id=%d, chip=%p, channel=%p\n",
669                channel_id, chip, channel);
670         */
671         //channel->interrupt = snd_ca0106_pcm_channel_interrupt;
672         channel->epcm = epcm;
673         err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
674         if (err < 0)
675                 return err;
676         //snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_capture_period_sizes);
677         err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
678         if (err < 0)
679                 return err;
680         return 0;
681 }
682 
683 /* close callback */
684 static int snd_ca0106_pcm_close_capture(struct snd_pcm_substream *substream)
685 {
686         struct snd_ca0106 *chip = snd_pcm_substream_chip(substream);
687         struct snd_pcm_runtime *runtime = substream->runtime;
688         struct snd_ca0106_pcm *epcm = runtime->private_data;
689         chip->capture_channels[epcm->channel_id].use = 0;
690         /* FIXME: maybe zero others */
691         return 0;
692 }
693 
694 static int snd_ca0106_pcm_open_0_capture(struct snd_pcm_substream *substream)
695 {
696         return snd_ca0106_pcm_open_capture_channel(substream, 0);
697 }
698 
699 static int snd_ca0106_pcm_open_1_capture(struct snd_pcm_substream *substream)
700 {
701         return snd_ca0106_pcm_open_capture_channel(substream, 1);
702 }
703 
704 static int snd_ca0106_pcm_open_2_capture(struct snd_pcm_substream *substream)
705 {
706         return snd_ca0106_pcm_open_capture_channel(substream, 2);
707 }
708 
709 static int snd_ca0106_pcm_open_3_capture(struct snd_pcm_substream *substream)
710 {
711         return snd_ca0106_pcm_open_capture_channel(substream, 3);
712 }
713 
714 /* prepare playback callback */
715 static int snd_ca0106_pcm_prepare_playback(struct snd_pcm_substream *substream)
716 {
717         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
718         struct snd_pcm_runtime *runtime = substream->runtime;
719         struct snd_ca0106_pcm *epcm = runtime->private_data;
720         int channel = epcm->channel_id;
721         u32 *table_base = (u32 *)(emu->buffer->area+(8*16*channel));
722         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
723         u32 hcfg_mask = HCFG_PLAYBACK_S32_LE;
724         u32 hcfg_set = 0x00000000;
725         u32 hcfg;
726         u32 reg40_mask = 0x30000 << (channel<<1);
727         u32 reg40_set = 0;
728         u32 reg40;
729         /* FIXME: Depending on mixer selection of SPDIF out or not, select the spdif rate or the DAC rate. */
730         u32 reg71_mask = 0x03030000 ; /* Global. Set SPDIF rate. We only support 44100 to spdif, not to DAC. */
731         u32 reg71_set = 0;
732         u32 reg71;
733         int i;
734         
735 #if 0 /* debug */
736         dev_dbg(emu->card->dev,
737                    "prepare:channel_number=%d, rate=%d, format=0x%x, "
738                    "channels=%d, buffer_size=%ld, period_size=%ld, "
739                    "periods=%u, frames_to_bytes=%d\n",
740                    channel, runtime->rate, runtime->format,
741                    runtime->channels, runtime->buffer_size,
742                    runtime->period_size, runtime->periods,
743                    frames_to_bytes(runtime, 1));
744         dev_dbg(emu->card->dev,
745                 "dma_addr=%x, dma_area=%p, table_base=%p\n",
746                    runtime->dma_addr, runtime->dma_area, table_base);
747         dev_dbg(emu->card->dev,
748                 "dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
749                    emu->buffer->addr, emu->buffer->area, emu->buffer->bytes);
750 #endif /* debug */
751         /* Rate can be set per channel. */
752         /* reg40 control host to fifo */
753         /* reg71 controls DAC rate. */
754         switch (runtime->rate) {
755         case 44100:
756                 reg40_set = 0x10000 << (channel<<1);
757                 reg71_set = 0x01010000; 
758                 break;
759         case 48000:
760                 reg40_set = 0;
761                 reg71_set = 0; 
762                 break;
763         case 96000:
764                 reg40_set = 0x20000 << (channel<<1);
765                 reg71_set = 0x02020000; 
766                 break;
767         case 192000:
768                 reg40_set = 0x30000 << (channel<<1);
769                 reg71_set = 0x03030000; 
770                 break;
771         default:
772                 reg40_set = 0;
773                 reg71_set = 0; 
774                 break;
775         }
776         /* Format is a global setting */
777         /* FIXME: Only let the first channel accessed set this. */
778         switch (runtime->format) {
779         case SNDRV_PCM_FORMAT_S16_LE:
780                 hcfg_set = 0;
781                 break;
782         case SNDRV_PCM_FORMAT_S32_LE:
783                 hcfg_set = HCFG_PLAYBACK_S32_LE;
784                 break;
785         default:
786                 hcfg_set = 0;
787                 break;
788         }
789         hcfg = inl(emu->port + CA0106_HCFG) ;
790         hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
791         outl(hcfg, emu->port + CA0106_HCFG);
792         reg40 = snd_ca0106_ptr_read(emu, 0x40, 0);
793         reg40 = (reg40 & ~reg40_mask) | reg40_set;
794         snd_ca0106_ptr_write(emu, 0x40, 0, reg40);
795         reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
796         reg71 = (reg71 & ~reg71_mask) | reg71_set;
797         snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
798 
799         /* FIXME: Check emu->buffer->size before actually writing to it. */
800         for(i=0; i < runtime->periods; i++) {
801                 table_base[i*2] = runtime->dma_addr + (i * period_size_bytes);
802                 table_base[i*2+1] = period_size_bytes << 16;
803         }
804  
805         snd_ca0106_ptr_write(emu, PLAYBACK_LIST_ADDR, channel, emu->buffer->addr+(8*16*channel));
806         snd_ca0106_ptr_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
807         snd_ca0106_ptr_write(emu, PLAYBACK_LIST_PTR, channel, 0);
808         snd_ca0106_ptr_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
809         snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
810         /* FIXME  test what 0 bytes does. */
811         snd_ca0106_ptr_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
812         snd_ca0106_ptr_write(emu, PLAYBACK_POINTER, channel, 0);
813         snd_ca0106_ptr_write(emu, 0x07, channel, 0x0);
814         snd_ca0106_ptr_write(emu, 0x08, channel, 0);
815         snd_ca0106_ptr_write(emu, PLAYBACK_MUTE, 0x0, 0x0); /* Unmute output */
816 #if 0
817         snd_ca0106_ptr_write(emu, SPCS0, 0,
818                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
819                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
820                                SPCS_GENERATIONSTATUS | 0x00001200 |
821                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT );
822 #endif
823 
824         return 0;
825 }
826 
827 /* prepare capture callback */
828 static int snd_ca0106_pcm_prepare_capture(struct snd_pcm_substream *substream)
829 {
830         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
831         struct snd_pcm_runtime *runtime = substream->runtime;
832         struct snd_ca0106_pcm *epcm = runtime->private_data;
833         int channel = epcm->channel_id;
834         u32 hcfg_mask = HCFG_CAPTURE_S32_LE;
835         u32 hcfg_set = 0x00000000;
836         u32 hcfg;
837         u32 over_sampling=0x2;
838         u32 reg71_mask = 0x0000c000 ; /* Global. Set ADC rate. */
839         u32 reg71_set = 0;
840         u32 reg71;
841         
842 #if 0 /* debug */
843         dev_dbg(emu->card->dev,
844                    "prepare:channel_number=%d, rate=%d, format=0x%x, "
845                    "channels=%d, buffer_size=%ld, period_size=%ld, "
846                    "periods=%u, frames_to_bytes=%d\n",
847                    channel, runtime->rate, runtime->format,
848                    runtime->channels, runtime->buffer_size,
849                    runtime->period_size, runtime->periods,
850                    frames_to_bytes(runtime, 1));
851         dev_dbg(emu->card->dev,
852                 "dma_addr=%x, dma_area=%p, table_base=%p\n",
853                    runtime->dma_addr, runtime->dma_area, table_base);
854         dev_dbg(emu->card->dev,
855                 "dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",
856                    emu->buffer->addr, emu->buffer->area, emu->buffer->bytes);
857 #endif /* debug */
858         /* reg71 controls ADC rate. */
859         switch (runtime->rate) {
860         case 44100:
861                 reg71_set = 0x00004000;
862                 break;
863         case 48000:
864                 reg71_set = 0; 
865                 break;
866         case 96000:
867                 reg71_set = 0x00008000;
868                 over_sampling=0xa;
869                 break;
870         case 192000:
871                 reg71_set = 0x0000c000; 
872                 over_sampling=0xa;
873                 break;
874         default:
875                 reg71_set = 0; 
876                 break;
877         }
878         /* Format is a global setting */
879         /* FIXME: Only let the first channel accessed set this. */
880         switch (runtime->format) {
881         case SNDRV_PCM_FORMAT_S16_LE:
882                 hcfg_set = 0;
883                 break;
884         case SNDRV_PCM_FORMAT_S32_LE:
885                 hcfg_set = HCFG_CAPTURE_S32_LE;
886                 break;
887         default:
888                 hcfg_set = 0;
889                 break;
890         }
891         hcfg = inl(emu->port + CA0106_HCFG) ;
892         hcfg = (hcfg & ~hcfg_mask) | hcfg_set;
893         outl(hcfg, emu->port + CA0106_HCFG);
894         reg71 = snd_ca0106_ptr_read(emu, 0x71, 0);
895         reg71 = (reg71 & ~reg71_mask) | reg71_set;
896         snd_ca0106_ptr_write(emu, 0x71, 0, reg71);
897         if (emu->details->i2c_adc == 1) { /* The SB0410 and SB0413 use I2C to control ADC. */
898                 snd_ca0106_i2c_write(emu, ADC_MASTER, over_sampling); /* Adjust the over sampler to better suit the capture rate. */
899         }
900 
901 
902         /*
903         dev_dbg(emu->card->dev,
904                "prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, "
905                "buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",
906                channel, runtime->rate, runtime->format, runtime->channels,
907                runtime->buffer_size, runtime->period_size,
908                frames_to_bytes(runtime, 1));
909         */
910         snd_ca0106_ptr_write(emu, 0x13, channel, 0);
911         snd_ca0106_ptr_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
912         snd_ca0106_ptr_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
913         snd_ca0106_ptr_write(emu, CAPTURE_POINTER, channel, 0);
914 
915         return 0;
916 }
917 
918 /* trigger_playback callback */
919 static int snd_ca0106_pcm_trigger_playback(struct snd_pcm_substream *substream,
920                                     int cmd)
921 {
922         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
923         struct snd_pcm_runtime *runtime;
924         struct snd_ca0106_pcm *epcm;
925         int channel;
926         int result = 0;
927         struct snd_pcm_substream *s;
928         u32 basic = 0;
929         u32 extended = 0;
930         u32 bits;
931         int running = 0;
932 
933         switch (cmd) {
934         case SNDRV_PCM_TRIGGER_START:
935         case SNDRV_PCM_TRIGGER_RESUME:
936                 running = 1;
937                 break;
938         case SNDRV_PCM_TRIGGER_STOP:
939         case SNDRV_PCM_TRIGGER_SUSPEND:
940         default:
941                 running = 0;
942                 break;
943         }
944         snd_pcm_group_for_each_entry(s, substream) {
945                 if (snd_pcm_substream_chip(s) != emu ||
946                     s->stream != SNDRV_PCM_STREAM_PLAYBACK)
947                         continue;
948                 runtime = s->runtime;
949                 epcm = runtime->private_data;
950                 channel = epcm->channel_id;
951                 /* dev_dbg(emu->card->dev, "channel=%d\n", channel); */
952                 epcm->running = running;
953                 basic |= (0x1 << channel);
954                 extended |= (0x10 << channel);
955                 snd_pcm_trigger_done(s, substream);
956         }
957         /* dev_dbg(emu->card->dev, "basic=0x%x, extended=0x%x\n",basic, extended); */
958 
959         switch (cmd) {
960         case SNDRV_PCM_TRIGGER_START:
961         case SNDRV_PCM_TRIGGER_RESUME:
962                 bits = snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0);
963                 bits |= extended;
964                 snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, bits);
965                 bits = snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0);
966                 bits |= basic;
967                 snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, bits);
968                 break;
969         case SNDRV_PCM_TRIGGER_STOP:
970         case SNDRV_PCM_TRIGGER_SUSPEND:
971                 bits = snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0);
972                 bits &= ~basic;
973                 snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, bits);
974                 bits = snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0);
975                 bits &= ~extended;
976                 snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, bits);
977                 break;
978         default:
979                 result = -EINVAL;
980                 break;
981         }
982         return result;
983 }
984 
985 /* trigger_capture callback */
986 static int snd_ca0106_pcm_trigger_capture(struct snd_pcm_substream *substream,
987                                     int cmd)
988 {
989         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
990         struct snd_pcm_runtime *runtime = substream->runtime;
991         struct snd_ca0106_pcm *epcm = runtime->private_data;
992         int channel = epcm->channel_id;
993         int result = 0;
994 
995         switch (cmd) {
996         case SNDRV_PCM_TRIGGER_START:
997                 snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
998                 snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
999                 epcm->running = 1;
1000                 break;
1001         case SNDRV_PCM_TRIGGER_STOP:
1002                 snd_ca0106_ptr_write(emu, BASIC_INTERRUPT, 0, snd_ca0106_ptr_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
1003                 snd_ca0106_ptr_write(emu, EXTENDED_INT_MASK, 0, snd_ca0106_ptr_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
1004                 epcm->running = 0;
1005                 break;
1006         default:
1007                 result = -EINVAL;
1008                 break;
1009         }
1010         return result;
1011 }
1012 
1013 /* pointer_playback callback */
1014 static snd_pcm_uframes_t
1015 snd_ca0106_pcm_pointer_playback(struct snd_pcm_substream *substream)
1016 {
1017         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1018         struct snd_pcm_runtime *runtime = substream->runtime;
1019         struct snd_ca0106_pcm *epcm = runtime->private_data;
1020         unsigned int ptr, prev_ptr;
1021         int channel = epcm->channel_id;
1022         int timeout = 10;
1023 
1024         if (!epcm->running)
1025                 return 0;
1026 
1027         prev_ptr = -1;
1028         do {
1029                 ptr = snd_ca0106_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
1030                 ptr = (ptr >> 3) * runtime->period_size;
1031                 ptr += bytes_to_frames(runtime,
1032                         snd_ca0106_ptr_read(emu, PLAYBACK_POINTER, channel));
1033                 if (ptr >= runtime->buffer_size)
1034                         ptr -= runtime->buffer_size;
1035                 if (prev_ptr == ptr)
1036                         return ptr;
1037                 prev_ptr = ptr;
1038         } while (--timeout);
1039         dev_warn(emu->card->dev, "ca0106: unstable DMA pointer!\n");
1040         return 0;
1041 }
1042 
1043 /* pointer_capture callback */
1044 static snd_pcm_uframes_t
1045 snd_ca0106_pcm_pointer_capture(struct snd_pcm_substream *substream)
1046 {
1047         struct snd_ca0106 *emu = snd_pcm_substream_chip(substream);
1048         struct snd_pcm_runtime *runtime = substream->runtime;
1049         struct snd_ca0106_pcm *epcm = runtime->private_data;
1050         snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
1051         int channel = epcm->channel_id;
1052 
1053         if (!epcm->running)
1054                 return 0;
1055 
1056         ptr1 = snd_ca0106_ptr_read(emu, CAPTURE_POINTER, channel);
1057         ptr2 = bytes_to_frames(runtime, ptr1);
1058         ptr=ptr2;
1059         if (ptr >= runtime->buffer_size)
1060                 ptr -= runtime->buffer_size;
1061         /*
1062         dev_dbg(emu->card->dev, "ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, "
1063                "buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n",
1064                ptr1, ptr2, ptr, (int)runtime->buffer_size,
1065                (int)runtime->period_size, (int)runtime->frame_bits,
1066                (int)runtime->rate);
1067         */
1068         return ptr;
1069 }
1070 
1071 /* operators */
1072 static const struct snd_pcm_ops snd_ca0106_playback_front_ops = {
1073         .open =        snd_ca0106_pcm_open_playback_front,
1074         .close =       snd_ca0106_pcm_close_playback,
1075         .prepare =     snd_ca0106_pcm_prepare_playback,
1076         .trigger =     snd_ca0106_pcm_trigger_playback,
1077         .pointer =     snd_ca0106_pcm_pointer_playback,
1078 };
1079 
1080 static const struct snd_pcm_ops snd_ca0106_capture_0_ops = {
1081         .open =        snd_ca0106_pcm_open_0_capture,
1082         .close =       snd_ca0106_pcm_close_capture,
1083         .prepare =     snd_ca0106_pcm_prepare_capture,
1084         .trigger =     snd_ca0106_pcm_trigger_capture,
1085         .pointer =     snd_ca0106_pcm_pointer_capture,
1086 };
1087 
1088 static const struct snd_pcm_ops snd_ca0106_capture_1_ops = {
1089         .open =        snd_ca0106_pcm_open_1_capture,
1090         .close =       snd_ca0106_pcm_close_capture,
1091         .prepare =     snd_ca0106_pcm_prepare_capture,
1092         .trigger =     snd_ca0106_pcm_trigger_capture,
1093         .pointer =     snd_ca0106_pcm_pointer_capture,
1094 };
1095 
1096 static const struct snd_pcm_ops snd_ca0106_capture_2_ops = {
1097         .open =        snd_ca0106_pcm_open_2_capture,
1098         .close =       snd_ca0106_pcm_close_capture,
1099         .prepare =     snd_ca0106_pcm_prepare_capture,
1100         .trigger =     snd_ca0106_pcm_trigger_capture,
1101         .pointer =     snd_ca0106_pcm_pointer_capture,
1102 };
1103 
1104 static const struct snd_pcm_ops snd_ca0106_capture_3_ops = {
1105         .open =        snd_ca0106_pcm_open_3_capture,
1106         .close =       snd_ca0106_pcm_close_capture,
1107         .prepare =     snd_ca0106_pcm_prepare_capture,
1108         .trigger =     snd_ca0106_pcm_trigger_capture,
1109         .pointer =     snd_ca0106_pcm_pointer_capture,
1110 };
1111 
1112 static const struct snd_pcm_ops snd_ca0106_playback_center_lfe_ops = {
1113         .open =         snd_ca0106_pcm_open_playback_center_lfe,
1114         .close =        snd_ca0106_pcm_close_playback,
1115         .prepare =      snd_ca0106_pcm_prepare_playback,     
1116         .trigger =      snd_ca0106_pcm_trigger_playback,  
1117         .pointer =      snd_ca0106_pcm_pointer_playback, 
1118 };
1119 
1120 static const struct snd_pcm_ops snd_ca0106_playback_unknown_ops = {
1121         .open =         snd_ca0106_pcm_open_playback_unknown,
1122         .close =        snd_ca0106_pcm_close_playback,
1123         .prepare =      snd_ca0106_pcm_prepare_playback,     
1124         .trigger =      snd_ca0106_pcm_trigger_playback,  
1125         .pointer =      snd_ca0106_pcm_pointer_playback, 
1126 };
1127 
1128 static const struct snd_pcm_ops snd_ca0106_playback_rear_ops = {
1129         .open =         snd_ca0106_pcm_open_playback_rear,
1130         .close =        snd_ca0106_pcm_close_playback,
1131         .prepare =      snd_ca0106_pcm_prepare_playback,     
1132         .trigger =      snd_ca0106_pcm_trigger_playback,  
1133         .pointer =      snd_ca0106_pcm_pointer_playback, 
1134 };
1135 
1136 
1137 static unsigned short snd_ca0106_ac97_read(struct snd_ac97 *ac97,
1138                                              unsigned short reg)
1139 {
1140         struct snd_ca0106 *emu = ac97->private_data;
1141         unsigned long flags;
1142         unsigned short val;
1143 
1144         spin_lock_irqsave(&emu->emu_lock, flags);
1145         outb(reg, emu->port + CA0106_AC97ADDRESS);
1146         val = inw(emu->port + CA0106_AC97DATA);
1147         spin_unlock_irqrestore(&emu->emu_lock, flags);
1148         return val;
1149 }
1150 
1151 static void snd_ca0106_ac97_write(struct snd_ac97 *ac97,
1152                                     unsigned short reg, unsigned short val)
1153 {
1154         struct snd_ca0106 *emu = ac97->private_data;
1155         unsigned long flags;
1156   
1157         spin_lock_irqsave(&emu->emu_lock, flags);
1158         outb(reg, emu->port + CA0106_AC97ADDRESS);
1159         outw(val, emu->port + CA0106_AC97DATA);
1160         spin_unlock_irqrestore(&emu->emu_lock, flags);
1161 }
1162 
1163 static int snd_ca0106_ac97(struct snd_ca0106 *chip)
1164 {
1165         struct snd_ac97_bus *pbus;
1166         struct snd_ac97_template ac97;
1167         int err;
1168         static const struct snd_ac97_bus_ops ops = {
1169                 .write = snd_ca0106_ac97_write,
1170                 .read = snd_ca0106_ac97_read,
1171         };
1172   
1173         err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus);
1174         if (err < 0)
1175                 return err;
1176         pbus->no_vra = 1; /* we don't need VRA */
1177 
1178         memset(&ac97, 0, sizeof(ac97));
1179         ac97.private_data = chip;
1180         ac97.scaps = AC97_SCAP_NO_SPDIF;
1181         return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
1182 }
1183 
1184 static void ca0106_stop_chip(struct snd_ca0106 *chip);
1185 
1186 static void snd_ca0106_free(struct snd_card *card)
1187 {
1188         struct snd_ca0106 *chip = card->private_data;
1189 
1190         ca0106_stop_chip(chip);
1191 }
1192 
1193 static irqreturn_t snd_ca0106_interrupt(int irq, void *dev_id)
1194 {
1195         unsigned int status;
1196 
1197         struct snd_ca0106 *chip = dev_id;
1198         int i;
1199         int mask;
1200         unsigned int stat76;
1201         struct snd_ca0106_channel *pchannel;
1202 
1203         status = inl(chip->port + CA0106_IPR);
1204         if (! status)
1205                 return IRQ_NONE;
1206 
1207         stat76 = snd_ca0106_ptr_read(chip, EXTENDED_INT, 0);
1208         /*
1209         dev_dbg(emu->card->dev, "interrupt status = 0x%08x, stat76=0x%08x\n",
1210                    status, stat76);
1211         dev_dbg(emu->card->dev, "ptr=0x%08x\n",
1212                    snd_ca0106_ptr_read(chip, PLAYBACK_POINTER, 0));
1213         */
1214         mask = 0x11; /* 0x1 for one half, 0x10 for the other half period. */
1215         for(i = 0; i < 4; i++) {
1216                 pchannel = &(chip->playback_channels[i]);
1217                 if (stat76 & mask) {
1218 /* FIXME: Select the correct substream for period elapsed */
1219                         if(pchannel->use) {
1220                                 snd_pcm_period_elapsed(pchannel->epcm->substream);
1221                                 /* dev_dbg(emu->card->dev, "interrupt [%d] used\n", i); */
1222                         }
1223                 }
1224                 /*
1225                 dev_dbg(emu->card->dev, "channel=%p\n", pchannel);
1226                 dev_dbg(emu->card->dev, "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1227                 */
1228                 mask <<= 1;
1229         }
1230         mask = 0x110000; /* 0x1 for one half, 0x10 for the other half period. */
1231         for(i = 0; i < 4; i++) {
1232                 pchannel = &(chip->capture_channels[i]);
1233                 if (stat76 & mask) {
1234 /* FIXME: Select the correct substream for period elapsed */
1235                         if(pchannel->use) {
1236                                 snd_pcm_period_elapsed(pchannel->epcm->substream);
1237                                 /* dev_dbg(emu->card->dev, "interrupt [%d] used\n", i); */
1238                         }
1239                 }
1240                 /*
1241                 dev_dbg(emu->card->dev, "channel=%p\n", pchannel);
1242                 dev_dbg(emu->card->dev, "interrupt stat76[%d] = %08x, use=%d, channel=%d\n", i, stat76, pchannel->use, pchannel->number);
1243                 */
1244                 mask <<= 1;
1245         }
1246 
1247         snd_ca0106_ptr_write(chip, EXTENDED_INT, 0, stat76);
1248 
1249         if (chip->midi.dev_id &&
1250             (status & (chip->midi.ipr_tx|chip->midi.ipr_rx))) {
1251                 if (chip->midi.interrupt)
1252                         chip->midi.interrupt(&chip->midi, status);
1253                 else
1254                         chip->midi.interrupt_disable(&chip->midi, chip->midi.tx_enable | chip->midi.rx_enable);
1255         }
1256 
1257         // acknowledge the interrupt if necessary
1258         outl(status, chip->port + CA0106_IPR);
1259 
1260         return IRQ_HANDLED;
1261 }
1262 
1263 static const struct snd_pcm_chmap_elem surround_map[] = {
1264         { .channels = 2,
1265           .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
1266         { }
1267 };
1268 
1269 static const struct snd_pcm_chmap_elem clfe_map[] = {
1270         { .channels = 2,
1271           .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
1272         { }
1273 };
1274 
1275 static const struct snd_pcm_chmap_elem side_map[] = {
1276         { .channels = 2,
1277           .map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
1278         { }
1279 };
1280 
1281 static int snd_ca0106_pcm(struct snd_ca0106 *emu, int device)
1282 {
1283         struct snd_pcm *pcm;
1284         struct snd_pcm_substream *substream;
1285         const struct snd_pcm_chmap_elem *map = NULL;
1286         int err;
1287   
1288         err = snd_pcm_new(emu->card, "ca0106", device, 1, 1, &pcm);
1289         if (err < 0)
1290                 return err;
1291   
1292         pcm->private_data = emu;
1293 
1294         switch (device) {
1295         case 0:
1296           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_front_ops);
1297           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_0_ops);
1298           map = snd_pcm_std_chmaps;
1299           break;
1300         case 1:
1301           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_rear_ops);
1302           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_1_ops);
1303           map = surround_map;
1304           break;
1305         case 2:
1306           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_center_lfe_ops);
1307           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_2_ops);
1308           map = clfe_map;
1309           break;
1310         case 3:
1311           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ca0106_playback_unknown_ops);
1312           snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ca0106_capture_3_ops);
1313           map = side_map;
1314           break;
1315         }
1316 
1317         pcm->info_flags = 0;
1318         strcpy(pcm->name, "CA0106");
1319 
1320         for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; 
1321             substream; 
1322             substream = substream->next) {
1323                 snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
1324                                            &emu->pci->dev,
1325                                            64*1024, 64*1024);
1326         }
1327 
1328         for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; 
1329               substream; 
1330               substream = substream->next) {
1331                 snd_pcm_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV,
1332                                            &emu->pci->dev,
1333                                            64*1024, 64*1024);
1334         }
1335   
1336         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
1337                                      1 << 2, NULL);
1338         if (err < 0)
1339                 return err;
1340 
1341         emu->pcm[device] = pcm;
1342   
1343         return 0;
1344 }
1345 
1346 #define SPI_REG(reg, value)     (((reg) << SPI_REG_SHIFT) | (value))
1347 static const unsigned int spi_dac_init[] = {
1348         SPI_REG(SPI_LDA1_REG,   SPI_DA_BIT_0dB), /* 0dB dig. attenuation */
1349         SPI_REG(SPI_RDA1_REG,   SPI_DA_BIT_0dB),
1350         SPI_REG(SPI_PL_REG,     SPI_PL_BIT_L_L | SPI_PL_BIT_R_R | SPI_IZD_BIT),
1351         SPI_REG(SPI_FMT_REG,    SPI_FMT_BIT_I2S | SPI_IWL_BIT_24),
1352         SPI_REG(SPI_LDA2_REG,   SPI_DA_BIT_0dB),
1353         SPI_REG(SPI_RDA2_REG,   SPI_DA_BIT_0dB),
1354         SPI_REG(SPI_LDA3_REG,   SPI_DA_BIT_0dB),
1355         SPI_REG(SPI_RDA3_REG,   SPI_DA_BIT_0dB),
1356         SPI_REG(SPI_MASTDA_REG, SPI_DA_BIT_0dB),
1357         SPI_REG(9,              0x00),
1358         SPI_REG(SPI_MS_REG,     SPI_DACD0_BIT | SPI_DACD1_BIT | SPI_DACD2_BIT),
1359         SPI_REG(12,             0x00),
1360         SPI_REG(SPI_LDA4_REG,   SPI_DA_BIT_0dB),
1361         SPI_REG(SPI_RDA4_REG,   SPI_DA_BIT_0dB | SPI_DA_BIT_UPDATE),
1362         SPI_REG(SPI_DACD4_REG,  SPI_DACD4_BIT),
1363 };
1364 
1365 static const unsigned int i2c_adc_init[][2] = {
1366         { 0x17, 0x00 }, /* Reset */
1367         { 0x07, 0x00 }, /* Timeout */
1368         { 0x0b, 0x22 },  /* Interface control */
1369         { 0x0c, 0x22 },  /* Master mode control */
1370         { 0x0d, 0x08 },  /* Powerdown control */
1371         { 0x0e, 0xcf },  /* Attenuation Left  0x01 = -103dB, 0xff = 24dB */
1372         { 0x0f, 0xcf },  /* Attenuation Right 0.5dB steps */
1373         { 0x10, 0x7b },  /* ALC Control 1 */
1374         { 0x11, 0x00 },  /* ALC Control 2 */
1375         { 0x12, 0x32 },  /* ALC Control 3 */
1376         { 0x13, 0x00 },  /* Noise gate control */
1377         { 0x14, 0xa6 },  /* Limiter control */
1378         { 0x15, ADC_MUX_LINEIN },  /* ADC Mixer control */
1379 };
1380 
1381 static void ca0106_init_chip(struct snd_ca0106 *chip, int resume)
1382 {
1383         int ch;
1384         unsigned int def_bits;
1385 
1386         outl(0, chip->port + CA0106_INTE);
1387 
1388         /*
1389          *  Init to 0x02109204 :
1390          *  Clock accuracy    = 0     (1000ppm)
1391          *  Sample Rate       = 2     (48kHz)
1392          *  Audio Channel     = 1     (Left of 2)
1393          *  Source Number     = 0     (Unspecified)
1394          *  Generation Status = 1     (Original for Cat Code 12)
1395          *  Cat Code          = 12    (Digital Signal Mixer)
1396          *  Mode              = 0     (Mode 0)
1397          *  Emphasis          = 0     (None)
1398          *  CP                = 1     (Copyright unasserted)
1399          *  AN                = 0     (Audio data)
1400          *  P                 = 0     (Consumer)
1401          */
1402         def_bits =
1403                 SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1404                 SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1405                 SPCS_GENERATIONSTATUS | 0x00001200 |
1406                 0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT;
1407         if (!resume) {
1408                 chip->spdif_str_bits[0] = chip->spdif_bits[0] = def_bits;
1409                 chip->spdif_str_bits[1] = chip->spdif_bits[1] = def_bits;
1410                 chip->spdif_str_bits[2] = chip->spdif_bits[2] = def_bits;
1411                 chip->spdif_str_bits[3] = chip->spdif_bits[3] = def_bits;
1412         }
1413         /* Only SPCS1 has been tested */
1414         snd_ca0106_ptr_write(chip, SPCS1, 0, chip->spdif_str_bits[1]);
1415         snd_ca0106_ptr_write(chip, SPCS0, 0, chip->spdif_str_bits[0]);
1416         snd_ca0106_ptr_write(chip, SPCS2, 0, chip->spdif_str_bits[2]);
1417         snd_ca0106_ptr_write(chip, SPCS3, 0, chip->spdif_str_bits[3]);
1418 
1419         snd_ca0106_ptr_write(chip, PLAYBACK_MUTE, 0, 0x00fc0000);
1420         snd_ca0106_ptr_write(chip, CAPTURE_MUTE, 0, 0x00fc0000);
1421 
1422         /* Write 0x8000 to AC97_REC_GAIN to mute it. */
1423         outb(AC97_REC_GAIN, chip->port + CA0106_AC97ADDRESS);
1424         outw(0x8000, chip->port + CA0106_AC97DATA);
1425 #if 0 /* FIXME: what are these? */
1426         snd_ca0106_ptr_write(chip, SPCS0, 0, 0x2108006);
1427         snd_ca0106_ptr_write(chip, 0x42, 0, 0x2108006);
1428         snd_ca0106_ptr_write(chip, 0x43, 0, 0x2108006);
1429         snd_ca0106_ptr_write(chip, 0x44, 0, 0x2108006);
1430 #endif
1431 
1432         /* OSS drivers set this. */
1433         /* snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0xf0f003f); */
1434 
1435         /* Analog or Digital output */
1436         snd_ca0106_ptr_write(chip, SPDIF_SELECT1, 0, 0xf);
1437         /* 0x0b000000 for digital, 0x000b0000 for analog, from win2000 drivers.
1438          * Use 0x000f0000 for surround71
1439          */
1440         snd_ca0106_ptr_write(chip, SPDIF_SELECT2, 0, 0x000f0000);
1441 
1442         chip->spdif_enable = 0; /* Set digital SPDIF output off */
1443         /*snd_ca0106_ptr_write(chip, 0x45, 0, 0);*/ /* Analogue out */
1444         /*snd_ca0106_ptr_write(chip, 0x45, 0, 0xf00);*/ /* Digital out */
1445 
1446         /* goes to 0x40c80000 when doing SPDIF IN/OUT */
1447         snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 0, 0x40c81000);
1448         /* (Mute) CAPTURE feedback into PLAYBACK volume.
1449          * Only lower 16 bits matter.
1450          */
1451         snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 1, 0xffffffff);
1452         /* SPDIF IN Volume */
1453         snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 2, 0x30300000);
1454         /* SPDIF IN Volume, 0x70 = (vol & 0x3f) | 0x40 */
1455         snd_ca0106_ptr_write(chip, CAPTURE_CONTROL, 3, 0x00700000);
1456 
1457         snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING1, 0, 0x32765410);
1458         snd_ca0106_ptr_write(chip, PLAYBACK_ROUTING2, 0, 0x76767676);
1459         snd_ca0106_ptr_write(chip, CAPTURE_ROUTING1, 0, 0x32765410);
1460         snd_ca0106_ptr_write(chip, CAPTURE_ROUTING2, 0, 0x76767676);
1461 
1462         for (ch = 0; ch < 4; ch++) {
1463                 /* Only high 16 bits matter */
1464                 snd_ca0106_ptr_write(chip, CAPTURE_VOLUME1, ch, 0x30303030);
1465                 snd_ca0106_ptr_write(chip, CAPTURE_VOLUME2, ch, 0x30303030);
1466 #if 0 /* Mute */
1467                 snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0x40404040);
1468                 snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0x40404040);
1469                 snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME1, ch, 0xffffffff);
1470                 snd_ca0106_ptr_write(chip, PLAYBACK_VOLUME2, ch, 0xffffffff);
1471 #endif
1472         }
1473         if (chip->details->i2c_adc == 1) {
1474                 /* Select MIC, Line in, TAD in, AUX in */
1475                 snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4);
1476                 /* Default to CAPTURE_SOURCE to i2s in */
1477                 if (!resume)
1478                         chip->capture_source = 3;
1479         } else if (chip->details->ac97 == 1) {
1480                 /* Default to AC97 in */
1481                 snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x444400e4);
1482                 /* Default to CAPTURE_SOURCE to AC97 in */
1483                 if (!resume)
1484                         chip->capture_source = 4;
1485         } else {
1486                 /* Select MIC, Line in, TAD in, AUX in */
1487                 snd_ca0106_ptr_write(chip, CAPTURE_SOURCE, 0x0, 0x333300e4);
1488                 /* Default to Set CAPTURE_SOURCE to i2s in */
1489                 if (!resume)
1490                         chip->capture_source = 3;
1491         }
1492 
1493         if (chip->details->gpio_type == 2) {
1494                 /* The SB0438 use GPIO differently. */
1495                 /* FIXME: Still need to find out what the other GPIO bits do.
1496                  * E.g. For digital spdif out.
1497                  */
1498                 outl(0x0, chip->port + CA0106_GPIO);
1499                 /* outl(0x00f0e000, chip->port + CA0106_GPIO); */ /* Analog */
1500                 outl(0x005f5301, chip->port + CA0106_GPIO); /* Analog */
1501         } else if (chip->details->gpio_type == 1) {
1502                 /* The SB0410 and SB0413 use GPIO differently. */
1503                 /* FIXME: Still need to find out what the other GPIO bits do.
1504                  * E.g. For digital spdif out.
1505                  */
1506                 outl(0x0, chip->port + CA0106_GPIO);
1507                 /* outl(0x00f0e000, chip->port + CA0106_GPIO); */ /* Analog */
1508                 outl(0x005f5301, chip->port + CA0106_GPIO); /* Analog */
1509         } else {
1510                 outl(0x0, chip->port + CA0106_GPIO);
1511                 outl(0x005f03a3, chip->port + CA0106_GPIO); /* Analog */
1512                 /* outl(0x005f02a2, chip->port + CA0106_GPIO); */ /* SPDIF */
1513         }
1514         snd_ca0106_intr_enable(chip, 0x105); /* Win2000 uses 0x1e0 */
1515 
1516         /* outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG); */
1517         /* 0x1000 causes AC3 to fails. Maybe it effects 24 bit output. */
1518         /* outl(0x00001409, chip->port + CA0106_HCFG); */
1519         /* outl(0x00000009, chip->port + CA0106_HCFG); */
1520         /* AC97 2.0, Enable outputs. */
1521         outl(HCFG_AC97 | HCFG_AUDIOENABLE, chip->port + CA0106_HCFG);
1522 
1523         if (chip->details->i2c_adc == 1) {
1524                 /* The SB0410 and SB0413 use I2C to control ADC. */
1525                 int size, n;
1526 
1527                 size = ARRAY_SIZE(i2c_adc_init);
1528                 /* dev_dbg(emu->card->dev, "I2C:array size=0x%x\n", size); */
1529                 for (n = 0; n < size; n++)
1530                         snd_ca0106_i2c_write(chip, i2c_adc_init[n][0],
1531                                              i2c_adc_init[n][1]);
1532                 for (n = 0; n < 4; n++) {
1533                         chip->i2c_capture_volume[n][0] = 0xcf;
1534                         chip->i2c_capture_volume[n][1] = 0xcf;
1535                 }
1536                 chip->i2c_capture_source = 2; /* Line in */
1537                 /* Enable Line-in capture. MIC in currently untested. */
1538                 /* snd_ca0106_i2c_write(chip, ADC_MUX, ADC_MUX_LINEIN); */
1539         }
1540 
1541         if (chip->details->spi_dac) {
1542                 /* The SB0570 use SPI to control DAC. */
1543                 int size, n;
1544 
1545                 size = ARRAY_SIZE(spi_dac_init);
1546                 for (n = 0; n < size; n++) {
1547                         int reg = spi_dac_init[n] >> SPI_REG_SHIFT;
1548 
1549                         snd_ca0106_spi_write(chip, spi_dac_init[n]);
1550                         if (reg < ARRAY_SIZE(chip->spi_dac_reg))
1551                                 chip->spi_dac_reg[reg] = spi_dac_init[n];
1552                 }
1553 
1554                 /* Enable front dac only */
1555                 snd_ca0106_pcm_power_dac(chip, PCM_FRONT_CHANNEL, 1);
1556         }
1557 }
1558 
1559 static void ca0106_stop_chip(struct snd_ca0106 *chip)
1560 {
1561         /* disable interrupts */
1562         snd_ca0106_ptr_write(chip, BASIC_INTERRUPT, 0, 0);
1563         outl(0, chip->port + CA0106_INTE);
1564         snd_ca0106_ptr_write(chip, EXTENDED_INT_MASK, 0, 0);
1565         udelay(1000);
1566         /* disable audio */
1567         /* outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG); */
1568         outl(0, chip->port + CA0106_HCFG);
1569         /* FIXME: We need to stop and DMA transfers here.
1570          *        But as I am not sure how yet, we cannot from the dma pages.
1571          * So we can fix: snd-malloc: Memory leak?  pages not freed = 8
1572          */
1573 }
1574 
1575 static int snd_ca0106_create(int dev, struct snd_card *card,
1576                              struct pci_dev *pci)
1577 {
1578         struct snd_ca0106 *chip = card->private_data;
1579         const struct snd_ca0106_details *c;
1580         int err;
1581 
1582         err = pcim_enable_device(pci);
1583         if (err < 0)
1584                 return err;
1585         if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) {
1586                 dev_err(card->dev, "error to set 32bit mask DMA\n");
1587                 return -ENXIO;
1588         }
1589 
1590         chip->card = card;
1591         chip->pci = pci;
1592         chip->irq = -1;
1593 
1594         spin_lock_init(&chip->emu_lock);
1595 
1596         err = pci_request_regions(pci, "snd_ca0106");
1597         if (err < 0)
1598                 return err;
1599         chip->port = pci_resource_start(pci, 0);
1600 
1601         if (devm_request_irq(&pci->dev, pci->irq, snd_ca0106_interrupt,
1602                              IRQF_SHARED, KBUILD_MODNAME, chip)) {
1603                 dev_err(card->dev, "cannot grab irq\n");
1604                 return -EBUSY;
1605         }
1606         chip->irq = pci->irq;
1607         card->sync_irq = chip->irq;
1608 
1609         /* This stores the periods table. */
1610         chip->buffer = snd_devm_alloc_pages(&pci->dev, SNDRV_DMA_TYPE_DEV, 1024);
1611         if (!chip->buffer)
1612                 return -ENOMEM;
1613 
1614         pci_set_master(pci);
1615         /* read serial */
1616         pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
1617         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
1618         dev_info(card->dev, "Model %04x Rev %08x Serial %08x\n",
1619                chip->model, pci->revision, chip->serial);
1620         strcpy(card->driver, "CA0106");
1621         strcpy(card->shortname, "CA0106");
1622 
1623         for (c = ca0106_chip_details; c->serial; c++) {
1624                 if (subsystem[dev]) {
1625                         if (c->serial == subsystem[dev])
1626                                 break;
1627                 } else if (c->serial == chip->serial)
1628                         break;
1629         }
1630         chip->details = c;
1631         if (subsystem[dev]) {
1632                 dev_info(card->dev, "Sound card name=%s, "
1633                        "subsystem=0x%x. Forced to subsystem=0x%x\n",
1634                        c->name, chip->serial, subsystem[dev]);
1635         }
1636 
1637         sprintf(card->longname, "%s at 0x%lx irq %i",
1638                 c->name, chip->port, chip->irq);
1639 
1640         ca0106_init_chip(chip, 0);
1641         return 0;
1642 }
1643 
1644 
1645 static void ca0106_midi_interrupt_enable(struct snd_ca_midi *midi, int intr)
1646 {
1647         snd_ca0106_intr_enable((struct snd_ca0106 *)(midi->dev_id), intr);
1648 }
1649 
1650 static void ca0106_midi_interrupt_disable(struct snd_ca_midi *midi, int intr)
1651 {
1652         snd_ca0106_intr_disable((struct snd_ca0106 *)(midi->dev_id), intr);
1653 }
1654 
1655 static unsigned char ca0106_midi_read(struct snd_ca_midi *midi, int idx)
1656 {
1657         return (unsigned char)snd_ca0106_ptr_read((struct snd_ca0106 *)(midi->dev_id),
1658                                                   midi->port + idx, 0);
1659 }
1660 
1661 static void ca0106_midi_write(struct snd_ca_midi *midi, int data, int idx)
1662 {
1663         snd_ca0106_ptr_write((struct snd_ca0106 *)(midi->dev_id), midi->port + idx, 0, data);
1664 }
1665 
1666 static struct snd_card *ca0106_dev_id_card(void *dev_id)
1667 {
1668         return ((struct snd_ca0106 *)dev_id)->card;
1669 }
1670 
1671 static int ca0106_dev_id_port(void *dev_id)
1672 {
1673         return ((struct snd_ca0106 *)dev_id)->port;
1674 }
1675 
1676 static int snd_ca0106_midi(struct snd_ca0106 *chip, unsigned int channel)
1677 {
1678         struct snd_ca_midi *midi;
1679         char *name;
1680         int err;
1681 
1682         if (channel == CA0106_MIDI_CHAN_B) {
1683                 name = "CA0106 MPU-401 (UART) B";
1684                 midi =  &chip->midi2;
1685                 midi->tx_enable = INTE_MIDI_TX_B;
1686                 midi->rx_enable = INTE_MIDI_RX_B;
1687                 midi->ipr_tx = IPR_MIDI_TX_B;
1688                 midi->ipr_rx = IPR_MIDI_RX_B;
1689                 midi->port = MIDI_UART_B_DATA;
1690         } else {
1691                 name = "CA0106 MPU-401 (UART)";
1692                 midi =  &chip->midi;
1693                 midi->tx_enable = INTE_MIDI_TX_A;
1694                 midi->rx_enable = INTE_MIDI_TX_B;
1695                 midi->ipr_tx = IPR_MIDI_TX_A;
1696                 midi->ipr_rx = IPR_MIDI_RX_A;
1697                 midi->port = MIDI_UART_A_DATA;
1698         }
1699 
1700         midi->reset = CA0106_MPU401_RESET;
1701         midi->enter_uart = CA0106_MPU401_ENTER_UART;
1702         midi->ack = CA0106_MPU401_ACK;
1703 
1704         midi->input_avail = CA0106_MIDI_INPUT_AVAIL;
1705         midi->output_ready = CA0106_MIDI_OUTPUT_READY;
1706 
1707         midi->channel = channel;
1708 
1709         midi->interrupt_enable = ca0106_midi_interrupt_enable;
1710         midi->interrupt_disable = ca0106_midi_interrupt_disable;
1711 
1712         midi->read = ca0106_midi_read;
1713         midi->write = ca0106_midi_write;
1714 
1715         midi->get_dev_id_card = ca0106_dev_id_card;
1716         midi->get_dev_id_port = ca0106_dev_id_port;
1717 
1718         midi->dev_id = chip;
1719         
1720         err = ca_midi_init(chip, midi, 0, name);
1721         if (err < 0)
1722                 return err;
1723 
1724         return 0;
1725 }
1726 
1727 
1728 static int __snd_ca0106_probe(struct pci_dev *pci,
1729                               const struct pci_device_id *pci_id)
1730 {
1731         static int dev;
1732         struct snd_card *card;
1733         struct snd_ca0106 *chip;
1734         int i, err;
1735 
1736         if (dev >= SNDRV_CARDS)
1737                 return -ENODEV;
1738         if (!enable[dev]) {
1739                 dev++;
1740                 return -ENOENT;
1741         }
1742 
1743         err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1744                                 sizeof(*chip), &card);
1745         if (err < 0)
1746                 return err;
1747         chip = card->private_data;
1748 
1749         err = snd_ca0106_create(dev, card, pci);
1750         if (err < 0)
1751                 return err;
1752         card->private_free = snd_ca0106_free;
1753 
1754         for (i = 0; i < 4; i++) {
1755                 err = snd_ca0106_pcm(chip, i);
1756                 if (err < 0)
1757                         return err;
1758         }
1759 
1760         if (chip->details->ac97 == 1) {
1761                 /* The SB0410 and SB0413 do not have an AC97 chip. */
1762                 err = snd_ca0106_ac97(chip);
1763                 if (err < 0)
1764                         return err;
1765         }
1766         err = snd_ca0106_mixer(chip);
1767         if (err < 0)
1768                 return err;
1769 
1770         dev_dbg(card->dev, "probe for MIDI channel A ...");
1771         err = snd_ca0106_midi(chip, CA0106_MIDI_CHAN_A);
1772         if (err < 0)
1773                 return err;
1774         dev_dbg(card->dev, " done.\n");
1775 
1776 #ifdef CONFIG_SND_PROC_FS
1777         snd_ca0106_proc_init(chip);
1778 #endif
1779 
1780         err = snd_card_register(card);
1781         if (err < 0)
1782                 return err;
1783 
1784         pci_set_drvdata(pci, card);
1785         dev++;
1786         return 0;
1787 }
1788 
1789 static int snd_ca0106_probe(struct pci_dev *pci,
1790                             const struct pci_device_id *pci_id)
1791 {
1792         return snd_card_free_on_error(&pci->dev, __snd_ca0106_probe(pci, pci_id));
1793 }
1794 
1795 #ifdef CONFIG_PM_SLEEP
1796 static int snd_ca0106_suspend(struct device *dev)
1797 {
1798         struct snd_card *card = dev_get_drvdata(dev);
1799         struct snd_ca0106 *chip = card->private_data;
1800 
1801         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1802         if (chip->details->ac97)
1803                 snd_ac97_suspend(chip->ac97);
1804         snd_ca0106_mixer_suspend(chip);
1805 
1806         ca0106_stop_chip(chip);
1807         return 0;
1808 }
1809 
1810 static int snd_ca0106_resume(struct device *dev)
1811 {
1812         struct snd_card *card = dev_get_drvdata(dev);
1813         struct snd_ca0106 *chip = card->private_data;
1814         int i;
1815 
1816         ca0106_init_chip(chip, 1);
1817 
1818         if (chip->details->ac97)
1819                 snd_ac97_resume(chip->ac97);
1820         snd_ca0106_mixer_resume(chip);
1821         if (chip->details->spi_dac) {
1822                 for (i = 0; i < ARRAY_SIZE(chip->spi_dac_reg); i++)
1823                         snd_ca0106_spi_write(chip, chip->spi_dac_reg[i]);
1824         }
1825 
1826         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1827         return 0;
1828 }
1829 
1830 static SIMPLE_DEV_PM_OPS(snd_ca0106_pm, snd_ca0106_suspend, snd_ca0106_resume);
1831 #define SND_CA0106_PM_OPS       &snd_ca0106_pm
1832 #else
1833 #define SND_CA0106_PM_OPS       NULL
1834 #endif
1835 
1836 // PCI IDs
1837 static const struct pci_device_id snd_ca0106_ids[] = {
1838         { PCI_VDEVICE(CREATIVE, 0x0007), 0 },   /* Audigy LS or Live 24bit */
1839         { 0, }
1840 };
1841 MODULE_DEVICE_TABLE(pci, snd_ca0106_ids);
1842 
1843 // pci_driver definition
1844 static struct pci_driver ca0106_driver = {
1845         .name = KBUILD_MODNAME,
1846         .id_table = snd_ca0106_ids,
1847         .probe = snd_ca0106_probe,
1848         .driver = {
1849                 .pm = SND_CA0106_PM_OPS,
1850         },
1851 };
1852 
1853 module_pci_driver(ca0106_driver);
1854 

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