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/tlv.h>
 104 #include <sound/emu10k1.h>
 105 #include "p16v.h"
 106
 107 #define SET_CHANNEL 0  /* Testing channel outputs 0=Front, 1=Center/LFE, 2=Unknown, 3=Rear */
 108 #define PCM_FRONT_CHANNEL 0
 109 #define PCM_REAR_CHANNEL 1
 110 #define PCM_CENTER_LFE_CHANNEL 2
 111 #define PCM_SIDE_CHANNEL 3
 112 #define CONTROL_FRONT_CHANNEL 0
 113 #define CONTROL_REAR_CHANNEL 3
 114 #define CONTROL_CENTER_LFE_CHANNEL 1
 115 #define CONTROL_SIDE_CHANNEL 2
 116
 117 /* Card IDs:
 118  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2002 -> Audigy2 ZS 7.1 Model:SB0350
 119  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1007 -> Audigy2 6.1    Model:SB0240
 120  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:1002 -> Audigy2 Platinum  Model:SB msb0240230009266
 121  * Class 0401: 1102:0004 (rev 04) Subsystem: 1102:2007 -> Audigy4 Pro Model:SB0380 M1SB0380472001901E
 122  *
 123  */
 124
 125  /* hardware definition */
 126 static struct snd_pcm_hardware snd_p16v_playback_hw = {
 127         .info =                 SNDRV_PCM_INFO_MMAP |
 128                                 SNDRV_PCM_INFO_INTERLEAVED |
 129                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 130                                 SNDRV_PCM_INFO_RESUME |
 131                                 SNDRV_PCM_INFO_MMAP_VALID |
 132                                 SNDRV_PCM_INFO_SYNC_START,
 133         .formats =              SNDRV_PCM_FMTBIT_S32_LE, /* Only supports 24-bit samples padded to 32 bits. */
 134         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
 135         .rate_min =             44100,
 136         .rate_max =             192000,
 137         .channels_min =         8,
 138         .channels_max =         8,
 139         .buffer_bytes_max =     ((65536 - 64) * 8),
 140         .period_bytes_min =     64,
 141         .period_bytes_max =     (65536 - 64),
 142         .periods_min =          2,
 143         .periods_max =          8,
 144         .fifo_size =            0,
 145 };
 146
 147 static struct snd_pcm_hardware snd_p16v_capture_hw = {
 148         .info =                 (SNDRV_PCM_INFO_MMAP |
 149                                  SNDRV_PCM_INFO_INTERLEAVED |
 150                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 151                                  SNDRV_PCM_INFO_RESUME |
 152                                  SNDRV_PCM_INFO_MMAP_VALID),
 153         .formats =              SNDRV_PCM_FMTBIT_S32_LE,
 154         .rates =                SNDRV_PCM_RATE_192000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100,
 155         .rate_min =             44100,
 156         .rate_max =             192000,
 157         .channels_min =         2,
 158         .channels_max =         2,
 159         .buffer_bytes_max =     (65536 - 64),
 160         .period_bytes_min =     64,
 161         .period_bytes_max =     (65536 - 128) >> 1,  /* size has to be N*64 bytes */
 162         .periods_min =          2,
 163         .periods_max =          2,
 164         .fifo_size =            0,
 165 };
 166
 167 static void snd_p16v_pcm_free_substream(struct snd_pcm_runtime *runtime)
 168 {
 169         struct snd_emu10k1_pcm *epcm = runtime->private_data;
 170
 171         if (epcm) {
 172                 //snd_printk("epcm free: %p\n", epcm);
 173                 kfree(epcm);
 174         }
 175 }
 176
 177 /* open_playback callback */
 178 static int snd_p16v_pcm_open_playback_channel(struct snd_pcm_substream *substream, int channel_id)
 179 {
 180         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 181         struct snd_emu10k1_voice *channel = &(emu->p16v_voices[channel_id]);
 182         struct snd_emu10k1_pcm *epcm;
 183         struct snd_pcm_runtime *runtime = substream->runtime;
 184         int err;
 185
 186         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 187         //snd_printk("epcm kcalloc: %p\n", epcm);
 188
 189         if (epcm == NULL)
 190                 return -ENOMEM;
 191         epcm->emu = emu;
 192         epcm->substream = substream;
 193         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
 194
 195         runtime->private_data = epcm;
 196         runtime->private_free = snd_p16v_pcm_free_substream;
 197
 198         runtime->hw = snd_p16v_playback_hw;
 199
 200         channel->emu = emu;
 201         channel->number = channel_id;
 202
 203         channel->use=1;
 204         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
 205         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
 206         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
 207         channel->epcm=epcm;
 208         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 209                 return err;
 210
 211         runtime->sync.id32[0] = substream->pcm->card->number;
 212         runtime->sync.id32[1] = 'P';
 213         runtime->sync.id32[2] = 16;
 214         runtime->sync.id32[3] = 'V';
 215
 216         return 0;
 217 }
 218 /* open_capture callback */
 219 static int snd_p16v_pcm_open_capture_channel(struct snd_pcm_substream *substream, int channel_id)
 220 {
 221         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 222         struct snd_emu10k1_voice *channel = &(emu->p16v_capture_voice);
 223         struct snd_emu10k1_pcm *epcm;
 224         struct snd_pcm_runtime *runtime = substream->runtime;
 225         int err;
 226
 227         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
 228         //snd_printk("epcm kcalloc: %p\n", epcm);
 229
 230         if (epcm == NULL)
 231                 return -ENOMEM;
 232         epcm->emu = emu;
 233         epcm->substream = substream;
 234         //snd_printk("epcm device=%d, channel_id=%d\n", substream->pcm->device, channel_id);
 235
 236         runtime->private_data = epcm;
 237         runtime->private_free = snd_p16v_pcm_free_substream;
 238
 239         runtime->hw = snd_p16v_capture_hw;
 240
 241         channel->emu = emu;
 242         channel->number = channel_id;
 243
 244         channel->use=1;
 245         //snd_printk("p16v: open channel_id=%d, channel=%p, use=0x%x\n", channel_id, channel, channel->use);
 246         //printk("open:channel_id=%d, chip=%p, channel=%p\n",channel_id, chip, channel);
 247         //channel->interrupt = snd_p16v_pcm_channel_interrupt;
 248         channel->epcm=epcm;
 249         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 250                 return err;
 251
 252         return 0;
 253 }
 254
 255
 256 /* close callback */
 257 static int snd_p16v_pcm_close_playback(struct snd_pcm_substream *substream)
 258 {
 259         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 260         //struct snd_pcm_runtime *runtime = substream->runtime;
 261         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
 262         emu->p16v_voices[substream->pcm->device - emu->p16v_device_offset].use = 0;
 263         /* FIXME: maybe zero others */
 264         return 0;
 265 }
 266
 267 /* close callback */
 268 static int snd_p16v_pcm_close_capture(struct snd_pcm_substream *substream)
 269 {
 270         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 271         //struct snd_pcm_runtime *runtime = substream->runtime;
 272         //struct snd_emu10k1_pcm *epcm = runtime->private_data;
 273         emu->p16v_capture_voice.use = 0;
 274         /* FIXME: maybe zero others */
 275         return 0;
 276 }
 277
 278 static int snd_p16v_pcm_open_playback_front(struct snd_pcm_substream *substream)
 279 {
 280         return snd_p16v_pcm_open_playback_channel(substream, PCM_FRONT_CHANNEL);
 281 }
 282
 283 static int snd_p16v_pcm_open_capture(struct snd_pcm_substream *substream)
 284 {
 285         // Only using channel 0 for now, but the card has 2 channels.
 286         return snd_p16v_pcm_open_capture_channel(substream, 0);
 287 }
 288
 289 /* hw_params callback */
 290 static int snd_p16v_pcm_hw_params_playback(struct snd_pcm_substream *substream,
 291                                       struct snd_pcm_hw_params *hw_params)
 292 {
 293         int result;
 294         result = snd_pcm_lib_malloc_pages(substream,
 295                                         params_buffer_bytes(hw_params));
 296         return result;
 297 }
 298
 299 /* hw_params callback */
 300 static int snd_p16v_pcm_hw_params_capture(struct snd_pcm_substream *substream,
 301                                       struct snd_pcm_hw_params *hw_params)
 302 {
 303         int result;
 304         result = snd_pcm_lib_malloc_pages(substream,
 305                                         params_buffer_bytes(hw_params));
 306         return result;
 307 }
 308
 309
 310 /* hw_free callback */
 311 static int snd_p16v_pcm_hw_free_playback(struct snd_pcm_substream *substream)
 312 {
 313         int result;
 314         result = snd_pcm_lib_free_pages(substream);
 315         return result;
 316 }
 317
 318 /* hw_free callback */
 319 static int snd_p16v_pcm_hw_free_capture(struct snd_pcm_substream *substream)
 320 {
 321         int result;
 322         result = snd_pcm_lib_free_pages(substream);
 323         return result;
 324 }
 325
 326
 327 /* prepare playback callback */
 328 static int snd_p16v_pcm_prepare_playback(struct snd_pcm_substream *substream)
 329 {
 330         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 331         struct snd_pcm_runtime *runtime = substream->runtime;
 332         int channel = substream->pcm->device - emu->p16v_device_offset;
 333         u32 *table_base = (u32 *)(emu->p16v_buffer.area+(8*16*channel));
 334         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
 335         int i;
 336         u32 tmp;
 337
 338         //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));
 339         //snd_printk("dma_addr=%x, dma_area=%p, table_base=%p\n",runtime->dma_addr, runtime->dma_area, table_base);
 340         //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);
 341         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
 342         switch (runtime->rate) {
 343         case 44100:
 344           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x8080);
 345           break;
 346         case 96000:
 347           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x4040);
 348           break;
 349         case 192000:
 350           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x2020);
 351           break;
 352         case 48000:
 353         default:
 354           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0xe0e0) | 0x0000);
 355           break;
 356         }
 357         /* FIXME: Check emu->buffer.size before actually writing to it. */
 358         for(i = 0; i < runtime->periods; i++) {
 359                 table_base[i*2]=runtime->dma_addr+(i*period_size_bytes);
 360                 table_base[(i*2)+1]=period_size_bytes<<16;
 361         }
 362
 363         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_ADDR, channel, emu->p16v_buffer.addr+(8*16*channel));
 364         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_SIZE, channel, (runtime->periods - 1) << 19);
 365         snd_emu10k1_ptr20_write(emu, PLAYBACK_LIST_PTR, channel, 0);
 366         snd_emu10k1_ptr20_write(emu, PLAYBACK_DMA_ADDR, channel, runtime->dma_addr);
 367         //snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, frames_to_bytes(runtime, runtime->period_size)<<16); // buffer size in bytes
 368         snd_emu10k1_ptr20_write(emu, PLAYBACK_PERIOD_SIZE, channel, 0); // buffer size in bytes
 369         snd_emu10k1_ptr20_write(emu, PLAYBACK_POINTER, channel, 0);
 370         snd_emu10k1_ptr20_write(emu, 0x07, channel, 0x0);
 371         snd_emu10k1_ptr20_write(emu, 0x08, channel, 0);
 372
 373         return 0;
 374 }
 375
 376 /* prepare capture callback */
 377 static int snd_p16v_pcm_prepare_capture(struct snd_pcm_substream *substream)
 378 {
 379         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 380         struct snd_pcm_runtime *runtime = substream->runtime;
 381         int channel = substream->pcm->device - emu->p16v_device_offset;
 382         u32 tmp;
 383         //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));
 384         tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, channel);
 385         switch (runtime->rate) {
 386         case 44100:
 387           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0800);
 388           break;
 389         case 96000:
 390           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0400);
 391           break;
 392         case 192000:
 393           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0200);
 394           break;
 395         case 48000:
 396         default:
 397           snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, channel, (tmp & ~0x0e00) | 0x0000);
 398           break;
 399         }
 400         /* FIXME: Check emu->buffer.size before actually writing to it. */
 401         snd_emu10k1_ptr20_write(emu, 0x13, channel, 0);
 402         snd_emu10k1_ptr20_write(emu, CAPTURE_DMA_ADDR, channel, runtime->dma_addr);
 403         snd_emu10k1_ptr20_write(emu, CAPTURE_BUFFER_SIZE, channel, frames_to_bytes(runtime, runtime->buffer_size) << 16); // buffer size in bytes
 404         snd_emu10k1_ptr20_write(emu, CAPTURE_POINTER, channel, 0);
 405         //snd_emu10k1_ptr20_write(emu, CAPTURE_SOURCE, 0x0, 0x333300e4); /* Select MIC or Line in */
 406         //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) | (0x110000<<channel));
 407
 408         return 0;
 409 }
 410
 411 static void snd_p16v_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb)
 412 {
 413         unsigned long flags;
 414         unsigned int enable;
 415
 416         spin_lock_irqsave(&emu->emu_lock, flags);
 417         enable = inl(emu->port + INTE2) | intrenb;
 418         outl(enable, emu->port + INTE2);
 419         spin_unlock_irqrestore(&emu->emu_lock, flags);
 420 }
 421
 422 static void snd_p16v_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb)
 423 {
 424         unsigned long flags;
 425         unsigned int disable;
 426
 427         spin_lock_irqsave(&emu->emu_lock, flags);
 428         disable = inl(emu->port + INTE2) & (~intrenb);
 429         outl(disable, emu->port + INTE2);
 430         spin_unlock_irqrestore(&emu->emu_lock, flags);
 431 }
 432
 433 /* trigger_playback callback */
 434 static int snd_p16v_pcm_trigger_playback(struct snd_pcm_substream *substream,
 435                                     int cmd)
 436 {
 437         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 438         struct snd_pcm_runtime *runtime;
 439         struct snd_emu10k1_pcm *epcm;
 440         int channel;
 441         int result = 0;
 442         struct snd_pcm_substream *s;
 443         u32 basic = 0;
 444         u32 inte = 0;
 445         int running = 0;
 446
 447         switch (cmd) {
 448         case SNDRV_PCM_TRIGGER_START:
 449                 running=1;
 450                 break;
 451         case SNDRV_PCM_TRIGGER_STOP:
 452         default:
 453                 running = 0;
 454                 break;
 455         }
 456         snd_pcm_group_for_each_entry(s, substream) {
 457                 if (snd_pcm_substream_chip(s) != emu ||
 458                     s->stream != SNDRV_PCM_STREAM_PLAYBACK)
 459                         continue;
 460                 runtime = s->runtime;
 461                 epcm = runtime->private_data;
 462                 channel = substream->pcm->device-emu->p16v_device_offset;
 463                 //snd_printk("p16v channel=%d\n",channel);
 464                 epcm->running = running;
 465                 basic |= (0x1<<channel);
 466                 inte |= (INTE2_PLAYBACK_CH_0_LOOP<<channel);
 467                 snd_pcm_trigger_done(s, substream);
 468         }
 469         //snd_printk("basic=0x%x, inte=0x%x\n",basic, inte);
 470
 471         switch (cmd) {
 472         case SNDRV_PCM_TRIGGER_START:
 473                 snd_p16v_intr_enable(emu, inte);
 474                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)| (basic));
 475                 break;
 476         case SNDRV_PCM_TRIGGER_STOP:
 477                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(basic));
 478                 snd_p16v_intr_disable(emu, inte);
 479                 break;
 480         default:
 481                 result = -EINVAL;
 482                 break;
 483         }
 484         return result;
 485 }
 486
 487 /* trigger_capture callback */
 488 static int snd_p16v_pcm_trigger_capture(struct snd_pcm_substream *substream,
 489                                    int cmd)
 490 {
 491         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 492         struct snd_pcm_runtime *runtime = substream->runtime;
 493         struct snd_emu10k1_pcm *epcm = runtime->private_data;
 494         int channel = 0;
 495         int result = 0;
 496         u32 inte = INTE2_CAPTURE_CH_0_LOOP | INTE2_CAPTURE_CH_0_HALF_LOOP;
 497
 498         switch (cmd) {
 499         case SNDRV_PCM_TRIGGER_START:
 500                 snd_p16v_intr_enable(emu, inte);
 501                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0)|(0x100<<channel));
 502                 epcm->running = 1;
 503                 break;
 504         case SNDRV_PCM_TRIGGER_STOP:
 505                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & ~(0x100<<channel));
 506                 snd_p16v_intr_disable(emu, inte);
 507                 //snd_emu10k1_ptr20_write(emu, EXTENDED_INT_MASK, 0, snd_emu10k1_ptr20_read(emu, EXTENDED_INT_MASK, 0) & ~(0x110000<<channel));
 508                 epcm->running = 0;
 509                 break;
 510         default:
 511                 result = -EINVAL;
 512                 break;
 513         }
 514         return result;
 515 }
 516
 517 /* pointer_playback callback */
 518 static snd_pcm_uframes_t
 519 snd_p16v_pcm_pointer_playback(struct snd_pcm_substream *substream)
 520 {
 521         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 522         struct snd_pcm_runtime *runtime = substream->runtime;
 523         struct snd_emu10k1_pcm *epcm = runtime->private_data;
 524         snd_pcm_uframes_t ptr, ptr1, ptr2,ptr3,ptr4 = 0;
 525         int channel = substream->pcm->device - emu->p16v_device_offset;
 526         if (!epcm->running)
 527                 return 0;
 528
 529         ptr3 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
 530         ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
 531         ptr4 = snd_emu10k1_ptr20_read(emu, PLAYBACK_LIST_PTR, channel);
 532         if (ptr3 != ptr4) ptr1 = snd_emu10k1_ptr20_read(emu, PLAYBACK_POINTER, channel);
 533         ptr2 = bytes_to_frames(runtime, ptr1);
 534         ptr2+= (ptr4 >> 3) * runtime->period_size;
 535         ptr=ptr2;
 536         if (ptr >= runtime->buffer_size)
 537                 ptr -= runtime->buffer_size;
 538
 539         return ptr;
 540 }
 541
 542 /* pointer_capture callback */
 543 static snd_pcm_uframes_t
 544 snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
 545 {
 546         struct snd_emu10k1 *emu = snd_pcm_substream_chip(substream);
 547         struct snd_pcm_runtime *runtime = substream->runtime;
 548         struct snd_emu10k1_pcm *epcm = runtime->private_data;
 549         snd_pcm_uframes_t ptr, ptr1, ptr2 = 0;
 550         int channel = 0;
 551
 552         if (!epcm->running)
 553                 return 0;
 554
 555         ptr1 = snd_emu10k1_ptr20_read(emu, CAPTURE_POINTER, channel);
 556         ptr2 = bytes_to_frames(runtime, ptr1);
 557         ptr=ptr2;
 558         if (ptr >= runtime->buffer_size) {
 559                 ptr -= runtime->buffer_size;
 560                 printk(KERN_WARNING "buffer capture limited!\n");
 561         }
 562         //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);
 563
 564         return ptr;
 565 }
 566
 567 /* operators */
 568 static struct snd_pcm_ops snd_p16v_playback_front_ops = {
 569         .open =        snd_p16v_pcm_open_playback_front,
 570         .close =       snd_p16v_pcm_close_playback,
 571         .ioctl =       snd_pcm_lib_ioctl,
 572         .hw_params =   snd_p16v_pcm_hw_params_playback,
 573         .hw_free =     snd_p16v_pcm_hw_free_playback,
 574         .prepare =     snd_p16v_pcm_prepare_playback,
 575         .trigger =     snd_p16v_pcm_trigger_playback,
 576         .pointer =     snd_p16v_pcm_pointer_playback,
 577 };
 578
 579 static struct snd_pcm_ops snd_p16v_capture_ops = {
 580         .open =        snd_p16v_pcm_open_capture,
 581         .close =       snd_p16v_pcm_close_capture,
 582         .ioctl =       snd_pcm_lib_ioctl,
 583         .hw_params =   snd_p16v_pcm_hw_params_capture,
 584         .hw_free =     snd_p16v_pcm_hw_free_capture,
 585         .prepare =     snd_p16v_pcm_prepare_capture,
 586         .trigger =     snd_p16v_pcm_trigger_capture,
 587         .pointer =     snd_p16v_pcm_pointer_capture,
 588 };
 589
 590
 591 int snd_p16v_free(struct snd_emu10k1 *chip)
 592 {
 593         // release the data
 594         if (chip->p16v_buffer.area) {
 595                 snd_dma_free_pages(&chip->p16v_buffer);
 596                 //snd_printk("period lables free: %p\n", &chip->p16v_buffer);
 597         }
 598         return 0;
 599 }
 600
 601 int __devinit snd_p16v_pcm(struct snd_emu10k1 *emu, int device, struct snd_pcm **rpcm)
 602 {
 603         struct snd_pcm *pcm;
 604         struct snd_pcm_substream *substream;
 605         int err;
 606         int capture=1;
 607
 608         //snd_printk("snd_p16v_pcm called. device=%d\n", device);
 609         emu->p16v_device_offset = device;
 610         if (rpcm)
 611                 *rpcm = NULL;
 612
 613         if ((err = snd_pcm_new(emu->card, "p16v", device, 1, capture, &pcm)) < 0)
 614                 return err;
 615
 616         pcm->private_data = emu;
 617         // Single playback 8 channel device.
 618         // Single capture 2 channel device.
 619         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_p16v_playback_front_ops);
 620         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_p16v_capture_ops);
 621
 622         pcm->info_flags = 0;
 623         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
 624         strcpy(pcm->name, "p16v");
 625         emu->pcm_p16v = pcm;
 626
 627         for(substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
 628             substream;
 629             substream = substream->next) {
 630                 if ((err = snd_pcm_lib_preallocate_pages(substream,
 631                                                          SNDRV_DMA_TYPE_DEV,
 632                                                          snd_dma_pci_data(emu->pci),
 633                                                          ((65536 - 64) * 8), ((65536 - 64) * 8))) < 0)
 634                         return err;
 635                 //snd_printk("preallocate playback substream: err=%d\n", err);
 636         }
 637
 638         for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
 639               substream;
 640               substream = substream->next) {
 641                 if ((err = snd_pcm_lib_preallocate_pages(substream,
 642                                                    SNDRV_DMA_TYPE_DEV,
 643                                                    snd_dma_pci_data(emu->pci),
 644                                                    65536 - 64, 65536 - 64)) < 0)
 645                         return err;
 646                 //snd_printk("preallocate capture substream: err=%d\n", err);
 647         }
 648
 649         if (rpcm)
 650                 *rpcm = pcm;
 651
 652         return 0;
 653 }
 654
 655 static int snd_p16v_volume_info(struct snd_kcontrol *kcontrol,
 656                                 struct snd_ctl_elem_info *uinfo)
 657 {
 658         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 659         uinfo->count = 2;
 660         uinfo->value.integer.min = 0;
 661         uinfo->value.integer.max = 255;
 662         return 0;
 663 }
 664
 665 static int snd_p16v_volume_get(struct snd_kcontrol *kcontrol,
 666                                struct snd_ctl_elem_value *ucontrol)
 667 {
 668         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 669         int high_low = (kcontrol->private_value >> 8) & 0xff;
 670         int reg = kcontrol->private_value & 0xff;
 671         u32 value;
 672
 673         value = snd_emu10k1_ptr20_read(emu, reg, high_low);
 674         if (high_low) {
 675                 ucontrol->value.integer.value[0] = 0xff - ((value >> 24) & 0xff); /* Left */
 676                 ucontrol->value.integer.value[1] = 0xff - ((value >> 16) & 0xff); /* Right */
 677         } else {
 678                 ucontrol->value.integer.value[0] = 0xff - ((value >> 8) & 0xff); /* Left */
 679                 ucontrol->value.integer.value[1] = 0xff - ((value >> 0) & 0xff); /* Right */
 680         }
 681         return 0;
 682 }
 683
 684 static int snd_p16v_volume_put(struct snd_kcontrol *kcontrol,
 685                                struct snd_ctl_elem_value *ucontrol)
 686 {
 687         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 688         int high_low = (kcontrol->private_value >> 8) & 0xff;
 689         int reg = kcontrol->private_value & 0xff;
 690         u32 value, oval;
 691
 692         oval = value = snd_emu10k1_ptr20_read(emu, reg, 0);
 693         if (high_low == 1) {
 694                 value &= 0xffff;
 695                 value |= ((0xff - ucontrol->value.integer.value[0]) << 24) |
 696                         ((0xff - ucontrol->value.integer.value[1]) << 16);
 697         } else {
 698                 value &= 0xffff0000;
 699                 value |= ((0xff - ucontrol->value.integer.value[0]) << 8) |
 700                         ((0xff - ucontrol->value.integer.value[1]) );
 701         }
 702         if (value != oval) {
 703                 snd_emu10k1_ptr20_write(emu, reg, 0, value);
 704                 return 1;
 705         }
 706         return 0;
 707 }
 708
 709 static int snd_p16v_capture_source_info(struct snd_kcontrol *kcontrol,
 710                                         struct snd_ctl_elem_info *uinfo)
 711 {
 712         static char *texts[8] = {
 713                 "SPDIF", "I2S", "SRC48", "SRCMulti_SPDIF", "SRCMulti_I2S",
 714                 "CDIF", "FX", "AC97"
 715         };
 716
 717         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 718         uinfo->count = 1;
 719         uinfo->value.enumerated.items = 8;
 720         if (uinfo->value.enumerated.item > 7)
 721                 uinfo->value.enumerated.item = 7;
 722         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 723         return 0;
 724 }
 725
 726 static int snd_p16v_capture_source_get(struct snd_kcontrol *kcontrol,
 727                                         struct snd_ctl_elem_value *ucontrol)
 728 {
 729         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 730
 731         ucontrol->value.enumerated.item[0] = emu->p16v_capture_source;
 732         return 0;
 733 }
 734
 735 static int snd_p16v_capture_source_put(struct snd_kcontrol *kcontrol,
 736                                         struct snd_ctl_elem_value *ucontrol)
 737 {
 738         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 739         unsigned int val;
 740         int change = 0;
 741         u32 mask;
 742         u32 source;
 743
 744         val = ucontrol->value.enumerated.item[0] ;
 745         change = (emu->p16v_capture_source != val);
 746         if (change) {
 747                 emu->p16v_capture_source = val;
 748                 source = (val << 28) | (val << 24) | (val << 20) | (val << 16);
 749                 mask = snd_emu10k1_ptr20_read(emu, BASIC_INTERRUPT, 0) & 0xffff;
 750                 snd_emu10k1_ptr20_write(emu, BASIC_INTERRUPT, 0, source | mask);
 751         }
 752         return change;
 753 }
 754
 755 static int snd_p16v_capture_channel_info(struct snd_kcontrol *kcontrol,
 756                                          struct snd_ctl_elem_info *uinfo)
 757 {
 758         static char *texts[4] = { "0", "1", "2", "3",  };
 759
 760         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 761         uinfo->count = 1;
 762         uinfo->value.enumerated.items = 4;
 763         if (uinfo->value.enumerated.item > 3)
 764                 uinfo->value.enumerated.item = 3;
 765         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 766         return 0;
 767 }
 768
 769 static int snd_p16v_capture_channel_get(struct snd_kcontrol *kcontrol,
 770                                         struct snd_ctl_elem_value *ucontrol)
 771 {
 772         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 773
 774         ucontrol->value.enumerated.item[0] = emu->p16v_capture_channel;
 775         return 0;
 776 }
 777
 778 static int snd_p16v_capture_channel_put(struct snd_kcontrol *kcontrol,
 779                                         struct snd_ctl_elem_value *ucontrol)
 780 {
 781         struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
 782         unsigned int val;
 783         int change = 0;
 784         u32 tmp;
 785
 786         val = ucontrol->value.enumerated.item[0] ;
 787         change = (emu->p16v_capture_channel != val);
 788         if (change) {
 789                 emu->p16v_capture_channel = val;
 790                 tmp = snd_emu10k1_ptr20_read(emu, CAPTURE_P16V_SOURCE, 0) & 0xfffc;
 791                 snd_emu10k1_ptr20_write(emu, CAPTURE_P16V_SOURCE, 0, tmp | val);
 792         }
 793         return change;
 794 }
 795 static const DECLARE_TLV_DB_SCALE(snd_p16v_db_scale1, -5175, 25, 1);
 796
 797 #define P16V_VOL(xname,xreg,xhl) { \
 798         .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 799         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |             \
 800                   SNDRV_CTL_ELEM_ACCESS_TLV_READ,               \
 801         .info = snd_p16v_volume_info, \
 802         .get = snd_p16v_volume_get, \
 803         .put = snd_p16v_volume_put, \
 804         .tlv = { .p = snd_p16v_db_scale1 },     \
 805         .private_value = ((xreg) | ((xhl) << 8)) \
 806 }
 807
 808 static struct snd_kcontrol_new p16v_mixer_controls[] __devinitdata = {
 809         P16V_VOL("HD Analog Front Playback Volume", PLAYBACK_VOLUME_MIXER9, 0),
 810         P16V_VOL("HD Analog Rear Playback Volume", PLAYBACK_VOLUME_MIXER10, 1),
 811         P16V_VOL("HD Analog Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER9, 1),
 812         P16V_VOL("HD Analog Side Playback Volume", PLAYBACK_VOLUME_MIXER10, 0),
 813         P16V_VOL("HD SPDIF Front Playback Volume", PLAYBACK_VOLUME_MIXER7, 0),
 814         P16V_VOL("HD SPDIF Rear Playback Volume", PLAYBACK_VOLUME_MIXER8, 1),
 815         P16V_VOL("HD SPDIF Center/LFE Playback Volume", PLAYBACK_VOLUME_MIXER7, 1),
 816         P16V_VOL("HD SPDIF Side Playback Volume", PLAYBACK_VOLUME_MIXER8, 0),
 817         {
 818                 .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
 819                 .name =         "HD source Capture",
 820                 .info =         snd_p16v_capture_source_info,
 821                 .get =          snd_p16v_capture_source_get,
 822                 .put =          snd_p16v_capture_source_put
 823         },
 824         {
 825                 .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
 826                 .name =         "HD channel Capture",
 827                 .info =         snd_p16v_capture_channel_info,
 828                 .get =          snd_p16v_capture_channel_get,
 829                 .put =          snd_p16v_capture_channel_put
 830         },
 831 };
 832
 833
 834 int __devinit snd_p16v_mixer(struct snd_emu10k1 *emu)
 835 {
 836         int i, err;
 837         struct snd_card *card = emu->card;
 838
 839         for (i = 0; i < ARRAY_SIZE(p16v_mixer_controls); i++) {
 840                 if ((err = snd_ctl_add(card, snd_ctl_new1(&p16v_mixer_controls[i],
 841                                                           emu))) < 0)
 842                         return err;
 843         }
 844         return 0;
 845 }
 846
 847 #ifdef CONFIG_PM
 848
 849 #define NUM_CHS 1       /* up to 4, but only first channel is used */
 850
 851 int __devinit snd_p16v_alloc_pm_buffer(struct snd_emu10k1 *emu)
 852 {
 853         emu->p16v_saved = vmalloc(NUM_CHS * 4 * 0x80);
 854         if (! emu->p16v_saved)
 855                 return -ENOMEM;
 856         return 0;
 857 }
 858
 859 void snd_p16v_free_pm_buffer(struct snd_emu10k1 *emu)
 860 {
 861         vfree(emu->p16v_saved);
 862 }
 863
 864 void snd_p16v_suspend(struct snd_emu10k1 *emu)
 865 {
 866         int i, ch;
 867         unsigned int *val;
 868
 869         val = emu->p16v_saved;
 870         for (ch = 0; ch < NUM_CHS; ch++)
 871                 for (i = 0; i < 0x80; i++, val++)
 872                         *val = snd_emu10k1_ptr20_read(emu, i, ch);
 873 }
 874
 875 void snd_p16v_resume(struct snd_emu10k1 *emu)
 876 {
 877         int i, ch;
 878         unsigned int *val;
 879
 880         val = emu->p16v_saved;
 881         for (ch = 0; ch < NUM_CHS; ch++)
 882                 for (i = 0; i < 0x80; i++, val++)
 883                         snd_emu10k1_ptr20_write(emu, i, ch, *val);
 884 }
 885 #endif