sound/pci/emu10k1/p16v.c

   1 /*
   2  *  Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
   3  *  Driver p16v chips
   4  *  Version: 0.25
   5  *
   6  *  FEATURES currently supported:
   7  *    Output fixed at S32_LE, 2 channel to hw:0,0
   8  *    Rates: 44.1, 48, 96, 192.
   9  *
  10  *  Changelog:
  11  *  0.8
  12  *    Use separate card based buffer for periods table.
  13  *  0.9
  14  *    Use 2 channel output streams instead of 8 channel.
  15  *       (8 channel output streams might be good for ASIO type output)
  16  *    Corrected speaker output, so Front -> Front etc.
  17  *  0.10
  18  *    Fixed missed interrupts.
  19  *  0.11
  20  *    Add Sound card model number and names.
  21  *    Add Analog volume controls.
  22  *  0.12
  23  *    Corrected playback interrupts. Now interrupt per period, instead of half period.
  24  *  0.13
  25  *    Use single trigger for multichannel.
  26  *  0.14
  27  *    Mic capture now works at fixed: S32_LE, 96000Hz, Stereo.
  28  *  0.15
  29  *    Force buffer_size / period_size == INTEGER.
  30  *  0.16
  31  *    Update p16v.c to work with changed alsa api.
  32  *  0.17
  33  *    Update p16v.c to work with changed alsa api. Removed boot_devs.
  34  *  0.18
  35  *    Merging with snd-emu10k1 driver.
  36  *  0.19
  37  *    One stereo channel at 24bit now works.
  38  *  0.20
  39  *    Added better register defines.
  40  *  0.21
  41  *    Integrated with snd-emu10k1 driver.
  42  *  0.22
  43  *    Removed #if 0 ... #endif
  44  *  0.23
  45  *    Implement different capture rates.
  46  *  0.24
  47  *    Implement different capture source channels.
  48  *    e.g. When HD Capture source is set to SPDIF,
  49  *    setting HD Capture channel to 0 captures from CDROM digital input.
  50  *    setting HD Capture channel to 1 captures from SPDIF in.
  51  *  0.25
  52  *    Include capture buffer sizes.
  53  *
  54  *  BUGS:
  55  *    Some stability problems when unloading the snd-p16v kernel module.
  56  *    --
  57  *
  58  *  TODO:
  59  *    SPDIF out.
  60  *    Find out how to change capture sample rates. E.g. To record SPDIF at 48000Hz.
  61  *    Currently capture fixed at 48000Hz.
  62  *
  63  *    --
  64  *  GENERAL INFO:
  65  *    Model: SB0240
  66  *    P16V Chip: CA0151-DBS
  67  *    Audigy 2 Chip: CA0102-IAT
  68  *    AC97 Codec: STAC 9721
  69  *    ADC: Philips 1361T (Stereo 24bit)
  70  *    DAC: CS4382-K (8-channel, 24bit, 192Khz)
  71  *
  72  *  This code was initally based on code from ALSA's emu10k1x.c which is:
  73  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
  74  *
  75  *   This program is free software; you can redistribute it and/or modify
  76  *   it under the terms of the GNU General Public License as published by
  77  *   the Free Software Foundation; either version 2 of the License, or
  78  *   (at your option) any later version.
  79  *
  80  *   This program is distributed in the hope that it will be useful,
  81  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  82  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  83  *   GNU General Public License for more details.
  84  *
  85  *   You should have received a copy of the GNU General Public License
  86  *   along with this program; if not, write to the Free Software
  87  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  88  *
  89  */
  90 #include <sound/driver.h>
  91 #include <linux/delay.h>
  92 #include <linux/init.h>
  93 #include <linux/interrupt.h>
  94 #include <linux/pci.h>
  95 #include <linux/slab.h>
  96 #include <linux/vmalloc.h>
  97 #include <linux/moduleparam.h>
  98 #include <sound/core.h>
  99 #include <sound/initval.h>
 100 #include <sound/pcm.h>
 101 #include <sound/ac97_codec.h>
 102 #include <sound/info.h>
 103 #include <sound/emu10k1.h>
 104 #include "p16v.h"
 105
 106 #define SET_CHANNEL 0  /* Testing channel outputs 0=Front, 1=Center/LFE, 2=Unknown, 3=Rear */
 107 #define PCM_FRONT_CHANNEL 0
 108 #define PCM_REAR_CHANNEL 1
 109 #define PCM_CENTER_LFE_CHANNEL 2
 110 #define PCM_SIDE_CHANNEL 3
 111 #define CONTROL_FRONT_CHANNEL 0
 112 #define CONTROL_REAR_CHANNEL 3
 113 #define CONTROL_CENTER_LFE_CHANNEL 1
 114 #define CONTROL_SIDE_CHANNEL 2
 115
 116 /* Card IDs:
 117  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2002 -> Audigy2 ZS 7.1 Model:SB0350
 118  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1007 -> Audigy2 6.1    Model:SB0240
 119  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1002 -> Audigy2 Platinum  Model:SB msb0240230009266
 120  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2007 -> Audigy4 Pro Model:SB0380 M1SB0380472001901E
 121  *
 122  */
 123
 124  /* hardware definition */
 125 static struct snd_pcm_hardware snd_p16v_playback_hw = {
 126         .info =                 (SNDRV_PCM_INFO_MMAP |
 127                                  SNDRV_PCM_INFO_INTERLEAVED |
 128                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 129                                  SNDRV_PCM_INFO_RESUME |
 130                                  SNDRV_PCM_INFO_MMAP_VALID),
 131         .formats =              SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
 132         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
 133         .rate_min =             44100,
 134         .rate_max =             192000,
 135         .channels_min =         8,
 136         .channels_max =         8,
 137         .buffer_bytes_max =     ((65536 - 64) * 8),
 138         .period_bytes_min =     64,
 139         .period_bytes_max =     (65536 - 64),
 140         .periods_min =          2,
 141         .periods_max =          8,
 142         .fifo_size =            0,
 143 };
 144
 145 static struct snd_pcm_hardware snd_p16v_capture_hw = {
 146         .info =                 (SNDRV_PCM_INFO_MMAP |
 147                                  SNDRV_PCM_INFO_INTERLEAVED |
 148                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 149                                  SNDRV_PCM_INFO_RESUME |
 150                                  SNDRV_PCM_INFO_MMAP_VALID),
 151         .formats =              SNDRV_PCM_FMTBIT_S32_LE,
 152         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
 153         .rate_min =             44100,
 154         .rate_max =             192000,
 155         .channels_min =         2,
 156         .channels_max =         2,
 157         .buffer_bytes_max =     (65536 - 64),
 158         .period_bytes_min =     64,
 159         .period_bytes_max =     (65536 - 128) >> 1,  /* size has to be N*64 bytes */
 160         .periods_min =          2,
 161         .periods_max =          2,
 162         .fifo_size =            0,
 163 };
 164
 165 static void snd_p16v_pcm_free_substream(struct snd_pcm_runtime *runtime)
 166 {
 167         struct snd_emu10k1_pcm *epcm = runtime->private_data;
 168
 169         if (epcm) {
 170                 //snd_printk("epcm free: %p\n", epcm);
 171                 kfree(epcm);
 172         }
 173 }
 174
 175 /* open_playback callback */
 176 static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
 177 {
 178         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 179         struct snd_emu10k1_voice *channel = &(emu->p16v_voices[channel_id]);
 180         struct snd_emu10k1_pcm *epcm;
 181         struct snd_pcm_runtime *runtime = substream->runtime;
 182         int err;
 183
 184         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 185         //snd_printk("epcm kcalloc: %p\n", epcm);
 186
 187         if (epcm == NULL)
 188                 return -ENOMEM;
 189         epcm->emu = emu;
 190         epcm->substream = substream;
 191         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
 192
 193         runtime->private_data = epcm;
 194         runtime->private_free = snd_p16v_pcm_free_substream;
 195
 196         runtime->hw = snd_p16v_playback_hw;
 197
 198         channel->emu = emu;
 199         channel->number = channel_id;
 200
 201         channel->use=1;
 202         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
 203         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
 204         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
 205         channel->epcm=epcm;
 206         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 207                 return err;
 208
 209         return 0;
 210 }
 211 /* open_capture callback */
 212 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
 213 {
 214         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 215         struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
 216         struct snd_emu10k1_pcm *epcm;
 217         struct snd_pcm_runtime *runtime = substream->runtime;
 218         int err;
 219
 220         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 221         //snd_printk("epcm kcalloc: %p\n", epcm);
 222
 223         if (epcm == NULL)
 224                 return -ENOMEM;
 225         epcm->emu = emu;
 226         epcm->substream = substream;
 227         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
 228
 229         runtime->private_data = epcm;
 230         runtime->private_free = snd_p16v_pcm_free_substream;
 231
 232         runtime->hw = snd_p16v_capture_hw;
 233
 234         channel->emu = emu;
 235         channel->number = channel_id;
 236
 237         channel->use=1;
 238         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
 239         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
 240         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
 241         channel->epcm=epcm;
 242         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 243                 return err;
 244
 245         return 0;
 246 }
 247
 248
 249 /* close callback */
 250 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
 251 {
 252         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 253         //struct snd_pcm_runtime *runtime = substream->runtime;
 254         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
 255         emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use=0;
 256         /* FIXME: maybe zero others */
 257         return 0;
 258 }
 259
 260 /* close callback */
 261 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
 262 {
 263         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 264         //struct snd_pcm_runtime *runtime = substream->runtime;
 265         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
 266         emu->p16v_capture_voice.use=0;
 267         /* FIXME: maybe zero others */
 268         return 0;
 269 }
 270
 271 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
 272 {
 273         return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
 274 }
 275
 276 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
 277 {
 278         // Only using channel 0 for now, but the card has 2 channels.
 279         return snd_p16v_pcm_open_capture_channel(substream, 0);
 280 }
 281
 282 /* hw_params callback */
 283 static int snd_p16v_pcm_hw_params_playback(struct snd_pcm_substream *substream,
 284                                       struct snd_pcm_hw_params *hw_params)
 285 {
 286         int result;
 287         result = snd_pcm_lib_malloc_pages(substream,
 288                                         params_buffer_bytes(hw_params));
 289         return result;
 290 }
 291
 292 /* hw_params callback */
 293 static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
 294                                       struct snd_pcm_hw_params *hw_params)
 295 {
 296         int result;
 297         result = snd_pcm_lib_malloc_pages(substream,
 298                                         params_buffer_bytes(hw_params));
 299         return result;
 300 }
 301
 302
 303 /* hw_free callback */
 304 static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
 305 {
 306         int result;
 307         result = snd_pcm_lib_free_pages(substream);
 308         return result;
 309 }
 310
 311 /* hw_free callback */
 312 static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
 313 {
 314         int result;
 315         result = snd_pcm_lib_free_pages(substream);
 316         return result;
 317 }
 318
 319
 320 /* prepare playback callback */
 321 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
 322 {
 323         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 324         struct snd_pcm_runtime *runtime = substream->runtime;
 325         int channel = substream->pcm->device - emu->p16v_device_offset;
 326         u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
 327         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
 328         int i;
 329         u32 tmp;
 330
 331         //snd_printk("prepare:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, periods=%u, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size, runtime->periods, frames_to_bytes(runtime, 1));
 332         //snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
 333         //snd_printk("dma_addr=%x, dma_area=%p, dma_bytes(size)=%x\n",emu->p16v_buffer.addr, emu->p16v_buffer.area, emu->p16v_buffer.bytes);
 334         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
 335         switch (runtime->rate) {
 336         case 44100:
 337           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
 338           break;
 339         case 96000:
 340           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
 341           break;
 342         case 192000:
 343           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
 344           break;
 345         case 48000:
 346         default:
 347           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
 348           break;
 349         }
 350         /* FIXME: Check emu->buffer.size before actually writing to it. */
 351         for(i=0; i < runtime->periods; i++) {
 352                 table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
 353                 table_base[(i*2)+1]=period_size_bytes<<16;
 354         }
 355
 356         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
 357         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
 358         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
 359         snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
 360         //snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
 361         snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
 362         snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
 363         snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
 364         snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
 365
 366         return 0;
 367 }
 368
 369 /* prepare capture callback */
 370 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
 371 {
 372         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 373         struct snd_pcm_runtime *runtime = substream->runtime;
 374         int channel = substream->pcm->device - emu->p16v_device_offset;
 375         u32 tmp;
 376         //printk("prepare capture:channel_number=%d, rate=%d, format=0x%x, channels=%d, buffer_size=%ld, period_size=%ld, frames_to_bytes=%d\n",channel, runtime->rate, runtime->format, runtime->channels, runtime->buffer_size, runtime->period_size,  frames_to_bytes(runtime, 1));
 377         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
 378         switch (runtime->rate) {
 379         case 44100:
 380           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
 381           break;
 382         case 96000:
 383           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
 384           break;
 385         case 192000:
 386           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
 387           break;
 388         case 48000:
 389         default:
 390           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
 391           break;
 392         }
 393         /* FIXME: Check emu->buffer.size before actually writing to it. */
 394         snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
 395         snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
 396         snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
 397         snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
 398         //snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
 399         //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
 400
 401         return 0;
 402 }
 403
 404 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
 405 {
 406         unsigned long flags;
 407         unsigned int enable;
 408
 409         spin_lock_irqsave(&emu->emu_lock, flags);
 410         enable = inl(emu->port + INTE2) | intrenb;
 411         outl(enable, emu->port + INTE2);
 412         spin_unlock_irqrestore(&emu->emu_lock, flags);
 413 }
 414
 415 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
 416 {
 417         unsigned long flags;
 418         unsigned int disable;
 419
 420         spin_lock_irqsave(&emu->emu_lock, flags);
 421         disable = inl(emu->port + INTE2) & (~intrenb);
 422         outl(disable, emu->port + INTE2);
 423         spin_unlock_irqrestore(&emu->emu_lock, flags);
 424 }
 425
 426 /* trigger_playback callback */
 427 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
 428                                     int cmd)
 429 {
 430         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 431         struct snd_pcm_runtime *runtime;
 432         struct snd_emu10k1_pcm *epcm;
 433         int channel;
 434         int result = 0;
 435         struct list_head *pos;
 436         struct snd_pcm_substream *s;
 437         u32 basic = 0;
 438         u32 inte = 0;
 439         int running=0;
 440
 441         switch (cmd) {
 442         case SNDRV_PCM_TRIGGER_START:
 443                 running=1;
 444                 break;
 445         case SNDRV_PCM_TRIGGER_STOP:
 446         default:
 447                 running=0;
 448                 break;
 449         }
 450         snd_pcm_group_for_each(pos, substream) {
 451                 s = snd_pcm_group_substream_entry(pos);
 452                 runtime = s->runtime;
 453                 epcm = runtime->private_data;
 454                 channel = substream->pcm->device-emu->p16v_device_offset;
 455                 //snd_printk("p16v channel=%d\n",channel);
 456                 epcm->running = running;
 457                 basic |= (0x1<<channel);
 458                 inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
 459                 snd_pcm_trigger_done(s, substream);
 460         }
 461         //snd_printk("basic=0x%x, inte=0x%x\n",basic, inte);
 462
 463         switch (cmd) {
 464         case SNDRV_PCM_TRIGGER_START:
 465                 snd_p16v_intr_enable(emu, inte);
 466                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
 467                 break;
 468         case SNDRV_PCM_TRIGGER_STOP:
 469                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
 470                 snd_p16v_intr_disable(emu, inte);
 471                 break;
 472         default:
 473                 result = -EINVAL;
 474                 break;
 475         }
 476         return result;
 477 }
 478
 479 /* trigger_capture callback */
 480 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
 481                                    int cmd)
 482 {
 483         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 484         struct snd_pcm_runtime *runtime = substream->runtime;
 485         struct snd_emu10k1_pcm *epcm = runtime->private_data;
 486         int channel = 0;
 487         int result = 0;
 488         u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
 489
 490         switch (cmd) {
 491         case SNDRV_PCM_TRIGGER_START:
 492                 snd_p16v_intr_enable(emu, inte);
 493                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
 494                 epcm->running = 1;
 495                 break;
 496         case SNDRV_PCM_TRIGGER_STOP:
 497                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
 498                 snd_p16v_intr_disable(emu, inte);
 499                 //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
 500                 epcm->running = 0;
 501                 break;
 502         default:
 503                 result = -EINVAL;
 504                 break;
 505         }
 506         return result;
 507 }
 508
 509 /* pointer_playback callback */
 510 static snd_pcm_uframes_t
 511 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
 512 {
 513         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 514         struct snd_pcm_runtime *runtime = substream->runtime;
 515         struct snd_emu10k1_pcm *epcm = runtime->private_data;
 516         snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
 517         int channel = substream->pcm->device - emu->p16v_device_offset;
 518         if (!epcm->running)
 519                 return 0;
 520
 521         ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
 522         ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
 523         ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
 524         if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
 525         ptr2 = bytes_to_frames(runtime, ptr1);
 526         ptr2+= (ptr4 >> 3) * runtime->period_size;
 527         ptr=ptr2;
 528         if (ptr >= runtime->buffer_size)
 529                 ptr -= runtime->buffer_size;
 530
 531         return ptr;
 532 }
 533
 534 /* pointer_capture callback */
 535 static snd_pcm_uframes_t
 536 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
 537 {
 538         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 539         struct snd_pcm_runtime *runtime = substream->runtime;
 540         struct snd_emu10k1_pcm *epcm = runtime->private_data;
 541         snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
 542         int channel = 0;
 543
 544         if (!epcm->running)
 545                 return 0;
 546
 547         ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
 548         ptr2 = bytes_to_frames(runtime, ptr1);
 549         ptr=ptr2;
 550         if (ptr >= runtime->buffer_size) {
 551                 ptr -= runtime->buffer_size;
 552                 printk(KERN_WARNING "buffer capture limited!\n");
 553         }
 554         //printk("ptr1 = 0x%lx, ptr2=0x%lx, ptr=0x%lx, buffer_size = 0x%x, period_size = 0x%x, bits=%d, rate=%d\n", ptr1, ptr2, ptr, (int)runtime->buffer_size, (int)runtime->period_size, (int)runtime->frame_bits, (int)runtime->rate);
 555
 556         return ptr;
 557 }
 558
 559 /* operators */
 560 static struct snd_pcm_ops snd_p16v_playback_front_ops = {
 561         .open =        snd_p16v_pcm_open_playback_front,
 562         .close =       snd_p16v_pcm_close_playback,
 563         .ioctl =       snd_pcm_lib_ioctl,
 564         .hw_params =   snd_p16v_pcm_hw_params_playback,
 565         .hw_free =     snd_p16v_pcm_hw_free_playback,
 566         .prepare =     snd_p16v_pcm_prepare_playback,
 567         .trigger =     snd_p16v_pcm_trigger_playback,
 568         .pointer =     snd_p16v_pcm_pointer_playback,
 569 };
 570
 571 static struct snd_pcm_ops snd_p16v_capture_ops = {
 572         .open =        snd_p16v_pcm_open_capture,
 573         .close =       snd_p16v_pcm_close_capture,
 574         .ioctl =       snd_pcm_lib_ioctl,
 575         .hw_params =   snd_p16v_pcm_hw_params_capture,
 576         .hw_free =     snd_p16v_pcm_hw_free_capture,
 577         .prepare =     snd_p16v_pcm_prepare_capture,
 578         .trigger =     snd_p16v_pcm_trigger_capture,
 579         .pointer =     snd_p16v_pcm_pointer_capture,
 580 };
 581
 582
 583 int snd_p16v_free(struct snd_emu10k1 *chip)
 584 {
 585         // release the data
 586         if (chip->p16v_buffer.area) {
 587                 snd_dma_free_pages(&chip->p16v_buffer);
 588                 //snd_printk("period lables free: %p\n", &chip->p16v_buffer);
 589         }
 590         return 0;
 591 }
 592
 593 int __devinit snd_p16v_pcm(struct snd_emu10k1 *emu, int device, struct snd_pcm **rpcm)
 594 {
 595         struct snd_pcm *pcm;
 596         struct snd_pcm_substream *substream;
 597         int err;
 598         int capture=1;
 599
 600         //snd_printk("snd_p16v_pcm called. device=%d\n", device);
 601         emu->p16v_device_offset = device;
 602         if (rpcm)
 603                 *rpcm = NULL;
 604
 605         if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
 606                 return err;
 607
 608         pcm->private_data = emu;
 609         // Single playback 8 channel device.
 610         // Single capture 2 channel device.
 611         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
 612         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
 613
 614         pcm->info_flags = 0;
 615         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
 616         strcpy(pcm->name, "p16v");
 617         emu->pcm_p16v = pcm;
 618
 619         for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
 620             substream;
 621             substream = substream->next) {
 622                 if ((err = snd_pcm_lib_preallocate_pages(substream,
 623                                                          SNDRV_DMA_TYPE_DEV,
 624                                                          snd_dma_pci_data(emu->pci),
 625                                                          ((65536 - 64) * 8), ((65536 - 64) * 8))) < 0)
 626                         return err;
 627                 //snd_printk("preallocate playback substream: err=%d\n", err);
 628         }
 629
 630         for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
 631               substream;
 632               substream = substream->next) {
 633                 if ((err = snd_pcm_lib_preallocate_pages(substream,
 634                                                    SNDRV_DMA_TYPE_DEV,
 635                                                    snd_dma_pci_data(emu->pci),
 636                                                    65536 - 64, 65536 - 64)) < 0)
 637                         return err;
 638                 //snd_printk("preallocate capture substream: err=%d\n", err);
 639         }
 640
 641         if (rpcm)
 642                 *rpcm = pcm;
 643
 644         return 0;
 645 }
 646
 647 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
 648                                 struct snd_ctl_elem_info *uinfo)
 649 {
 650         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 651         uinfo->count = 2;
 652         uinfo->value.integer.min = 0;
 653         uinfo->value.integer.max = 255;
 654         return 0;
 655 }
 656
 657 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
 658                                struct snd_ctl_elem_value *ucontrol)
 659 {
 660         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 661         int high_low = (kcontrol->private_value >> 8) & 0xff;
 662         int reg = kcontrol->private_value & 0xff;
 663         u32 value;
 664
 665         value = snd_emu10k1_ptr20_read(emu, reg, high_low);
 666         if (high_low) {
 667                 ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
 668                 ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
 669         } else {
 670                 ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
 671                 ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
 672         }
 673         return 0;
 674 }
 675
 676 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
 677                                struct snd_ctl_elem_value *ucontrol)
 678 {
 679         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 680         int high_low = (kcontrol->private_value >> 8) & 0xff;
 681         int reg = kcontrol->private_value & 0xff;
 682         u32 value, oval;
 683
 684         oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
 685         if (high_low == 1) {
 686                 value &= 0xffff;
 687                 value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
 688                         ((0xff - ucontrol->value.integer.value[1]) << 16);
 689         } else {
 690                 value &= 0xffff0000;
 691                 value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
 692                         ((0xff - ucontrol->value.integer.value[1]) );
 693         }
 694         if (value != oval) {
 695                 snd_emu10k1_ptr20_write(emu, reg, 0, value);
 696                 return 1;
 697         }
 698         return 0;
 699 }
 700
 701 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
 702                                         struct snd_ctl_elem_info *uinfo)
 703 {
 704         static char *texts[8] = {
 705                 "SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
 706                 "CDIF", "FX", "AC97"
 707         };
 708
 709         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 710         uinfo->count = 1;
 711         uinfo->value.enumerated.items = 8;
 712         if (uinfo->value.enumerated.item > 7)
 713                 uinfo->value.enumerated.item = 7;
 714         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 715         return 0;
 716 }
 717
 718 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
 719                                         struct snd_ctl_elem_value *ucontrol)
 720 {
 721         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 722
 723         ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
 724         return 0;
 725 }
 726
 727 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
 728                                         struct snd_ctl_elem_value *ucontrol)
 729 {
 730         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 731         unsigned int val;
 732         int change = 0;
 733         u32 mask;
 734         u32 source;
 735
 736         val = ucontrol->value.enumerated.item[0] ;
 737         change = (emu->p16v_capture_source != val);
 738         if (change) {
 739                 emu->p16v_capture_source = val;
 740                 source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
 741                 mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
 742                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
 743         }
 744         return change;
 745 }
 746
 747 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
 748                                          struct snd_ctl_elem_info *uinfo)
 749 {
 750         static char *texts[4] = { "0", "1", "2", "3",  };
 751
 752         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 753         uinfo->count = 1;
 754         uinfo->value.enumerated.items = 4;
 755         if (uinfo->value.enumerated.item > 3)
 756                 uinfo->value.enumerated.item = 3;
 757         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 758         return 0;
 759 }
 760
 761 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
 762                                         struct snd_ctl_elem_value *ucontrol)
 763 {
 764         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 765
 766         ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
 767         return 0;
 768 }
 769
 770 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
 771                                         struct snd_ctl_elem_value *ucontrol)
 772 {
 773         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 774         unsigned int val;
 775         int change = 0;
 776         u32 tmp;
 777
 778         val = ucontrol->value.enumerated.item[0] ;
 779         change = (emu->p16v_capture_channel != val);
 780         if (change) {
 781                 emu->p16v_capture_channel = val;
 782                 tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
 783                 snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
 784         }
 785         return change;
 786 }
 787
 788 #define P16V_VOL(xname,xreg,xhl) { \
 789         .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 790         .info = snd_p16v_volume_info, \
 791         .get = snd_p16v_volume_get, \
 792         .put = snd_p16v_volume_put, \
 793         .private_value = ((xreg) | ((xhl) << 8)) \
 794 }
 795
 796 static struct snd_kcontrol_new p16v_mixer_controls[] __devinitdata = {
 797         P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
 798         P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
 799         P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
 800         P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
 801         P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
 802         P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
 803         P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
 804         P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
 805         {
 806                 .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
 807                 .name =         "HD source Capture",
 808                 .info =         snd_p16v_capture_source_info,
 809                 .get =          snd_p16v_capture_source_get,
 810                 .put =          snd_p16v_capture_source_put
 811         },
 812         {
 813                 .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
 814                 .name =         "HD channel Capture",
 815                 .info =         snd_p16v_capture_channel_info,
 816                 .get =          snd_p16v_capture_channel_get,
 817                 .put =          snd_p16v_capture_channel_put
 818         },
 819 };
 820
 821
 822 int __devinit snd_p16v_mixer(struct snd_emu10k1 *emu)
 823 {
 824         int i, err;
 825         struct snd_card *card = emu->card;
 826
 827         for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
 828                 if ((err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i],
 829                                                           emu))) < 0)
 830                         return err;
 831         }
 832         return 0;
 833 }
 834
 835 #ifdef CONFIG_PM
 836
 837 #define NUM_CHS 1       /* up to 4, but only first channel is used */
 838
 839 int __devinit snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
 840 {
 841         emu->p16v_saved = vmalloc(NUM_CHS * 4 * 0x80);
 842         if (! emu->p16v_saved)
 843                 return -ENOMEM;
 844         return 0;
 845 }
 846
 847 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
 848 {
 849         vfree(emu->p16v_saved);
 850 }
 851
 852 void snd_p16v_suspend(struct snd_emu10k1 *emu)
 853 {
 854         int i, ch;
 855         unsigned int *val;
 856
 857         val = emu->p16v_saved;
 858         for (ch = 0; ch < NUM_CHS; ch++)
 859                 for (i = 0; i < 0x80; i++, val++)
 860                         *val = snd_emu10k1_ptr20_read(emu, i, ch);
 861 }
 862
 863 void snd_p16v_resume(struct snd_emu10k1 *emu)
 864 {
 865         int i, ch;
 866         unsigned int *val;
 867
 868         val = emu->p16v_saved;
 869         for (ch = 0; ch < NUM_CHS; ch++)
 870                 for (i = 0; i < 0x80; i++, val++)
 871                         snd_emu10k1_ptr20_write(emu, i, ch, *val);
 872 }
 873 #endif