sound/isa/ad1816a/ad1816a_lib.c

   1
   2 /*
   3     ad1816a.c - lowlevel code for Analog Devices AD1816A chip.
   4     Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 */
  20
  21 #include <sound/driver.h>
  22 #include <linux/delay.h>
  23 #include <linux/init.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/slab.h>
  26 #include <linux/ioport.h>
  27 #include <sound/core.h>
  28 #include <sound/ad1816a.h>
  29
  30 #include <asm/io.h>
  31 #include <asm/dma.h>
  32
  33 MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
  34 MODULE_DESCRIPTION("lowlevel code for Analog Devices AD1816A chip");
  35 MODULE_LICENSE("GPL");
  36
  37 static inline int snd_ad1816a_busy_wait(ad1816a_t *chip)
  38 {
  39         int timeout;
  40
  41         for (timeout = 1000; timeout-- > 0; udelay(10))
  42                 if (inb(AD1816A_REG(AD1816A_CHIP_STATUS)) & AD1816A_READY)
  43                         return 0;
  44
  45         snd_printk("chip busy.\n");
  46         return -EBUSY;
  47 }
  48
  49 static inline unsigned char snd_ad1816a_in(ad1816a_t *chip, unsigned char reg)
  50 {
  51         snd_ad1816a_busy_wait(chip);
  52         return inb(AD1816A_REG(reg));
  53 }
  54
  55 static inline void snd_ad1816a_out(ad1816a_t *chip, unsigned char reg,
  56                             unsigned char value)
  57 {
  58         snd_ad1816a_busy_wait(chip);
  59         outb(value, AD1816A_REG(reg));
  60 }
  61
  62 static inline void snd_ad1816a_out_mask(ad1816a_t *chip, unsigned char reg,
  63                                  unsigned char mask, unsigned char value)
  64 {
  65         snd_ad1816a_out(chip, reg,
  66                 (value & mask) | (snd_ad1816a_in(chip, reg) & ~mask));
  67 }
  68
  69 static unsigned short snd_ad1816a_read(ad1816a_t *chip, unsigned char reg)
  70 {
  71         snd_ad1816a_out(chip, AD1816A_INDIR_ADDR, reg & 0x3f);
  72         return snd_ad1816a_in(chip, AD1816A_INDIR_DATA_LOW) |
  73                 (snd_ad1816a_in(chip, AD1816A_INDIR_DATA_HIGH) << 8);
  74 }
  75
  76 static void snd_ad1816a_write(ad1816a_t *chip, unsigned char reg,
  77                               unsigned short value)
  78 {
  79         snd_ad1816a_out(chip, AD1816A_INDIR_ADDR, reg & 0x3f);
  80         snd_ad1816a_out(chip, AD1816A_INDIR_DATA_LOW, value & 0xff);
  81         snd_ad1816a_out(chip, AD1816A_INDIR_DATA_HIGH, (value >> 8) & 0xff);
  82 }
  83
  84 static void snd_ad1816a_write_mask(ad1816a_t *chip, unsigned char reg,
  85                                    unsigned short mask, unsigned short value)
  86 {
  87         snd_ad1816a_write(chip, reg,
  88                 (value & mask) | (snd_ad1816a_read(chip, reg) & ~mask));
  89 }
  90
  91
  92 static unsigned char snd_ad1816a_get_format(ad1816a_t *chip,
  93                                             unsigned int format, int channels)
  94 {
  95         unsigned char retval = AD1816A_FMT_LINEAR_8;
  96
  97         switch (format) {
  98         case SNDRV_PCM_FORMAT_MU_LAW:
  99                 retval = AD1816A_FMT_ULAW_8;
 100                 break;
 101         case SNDRV_PCM_FORMAT_A_LAW:
 102                 retval = AD1816A_FMT_ALAW_8;
 103                 break;
 104         case SNDRV_PCM_FORMAT_S16_LE:
 105                 retval = AD1816A_FMT_LINEAR_16_LIT;
 106                 break;
 107         case SNDRV_PCM_FORMAT_S16_BE:
 108                 retval = AD1816A_FMT_LINEAR_16_BIG;
 109         }
 110         return (channels > 1) ? (retval | AD1816A_FMT_STEREO) : retval;
 111 }
 112
 113 static int snd_ad1816a_open(ad1816a_t *chip, unsigned int mode)
 114 {
 115         unsigned long flags;
 116
 117         spin_lock_irqsave(&chip->lock, flags);
 118
 119         if (chip->mode & mode) {
 120                 spin_unlock_irqrestore(&chip->lock, flags);
 121                 return -EAGAIN;
 122         }
 123
 124         switch ((mode &= AD1816A_MODE_OPEN)) {
 125         case AD1816A_MODE_PLAYBACK:
 126                 snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
 127                         AD1816A_PLAYBACK_IRQ_PENDING, 0x00);
 128                 snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
 129                         AD1816A_PLAYBACK_IRQ_ENABLE, 0xffff);
 130                 break;
 131         case AD1816A_MODE_CAPTURE:
 132                 snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
 133                         AD1816A_CAPTURE_IRQ_PENDING, 0x00);
 134                 snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
 135                         AD1816A_CAPTURE_IRQ_ENABLE, 0xffff);
 136                 break;
 137         case AD1816A_MODE_TIMER:
 138                 snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
 139                         AD1816A_TIMER_IRQ_PENDING, 0x00);
 140                 snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
 141                         AD1816A_TIMER_IRQ_ENABLE, 0xffff);
 142         }
 143         chip->mode |= mode;
 144
 145         spin_unlock_irqrestore(&chip->lock, flags);
 146         return 0;
 147 }
 148
 149 static void snd_ad1816a_close(ad1816a_t *chip, unsigned int mode)
 150 {
 151         unsigned long flags;
 152
 153         spin_lock_irqsave(&chip->lock, flags);
 154
 155         switch ((mode &= AD1816A_MODE_OPEN)) {
 156         case AD1816A_MODE_PLAYBACK:
 157                 snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
 158                         AD1816A_PLAYBACK_IRQ_PENDING, 0x00);
 159                 snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
 160                         AD1816A_PLAYBACK_IRQ_ENABLE, 0x0000);
 161                 break;
 162         case AD1816A_MODE_CAPTURE:
 163                 snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
 164                         AD1816A_CAPTURE_IRQ_PENDING, 0x00);
 165                 snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
 166                         AD1816A_CAPTURE_IRQ_ENABLE, 0x0000);
 167                 break;
 168         case AD1816A_MODE_TIMER:
 169                 snd_ad1816a_out_mask(chip, AD1816A_INTERRUPT_STATUS,
 170                         AD1816A_TIMER_IRQ_PENDING, 0x00);
 171                 snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
 172                         AD1816A_TIMER_IRQ_ENABLE, 0x0000);
 173         }
 174         if (!((chip->mode &= ~mode) & AD1816A_MODE_OPEN))
 175                 chip->mode = 0;
 176
 177         spin_unlock_irqrestore(&chip->lock, flags);
 178 }
 179
 180
 181 static int snd_ad1816a_trigger(ad1816a_t *chip, unsigned char what,
 182                                int channel, int cmd)
 183 {
 184         int error = 0;
 185
 186         switch (cmd) {
 187         case SNDRV_PCM_TRIGGER_START:
 188         case SNDRV_PCM_TRIGGER_STOP:
 189                 spin_lock(&chip->lock);
 190                 cmd = (cmd == SNDRV_PCM_TRIGGER_START) ? 0xff: 0x00;
 191                 if (what & AD1816A_PLAYBACK_ENABLE)
 192                         snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
 193                                 AD1816A_PLAYBACK_ENABLE, cmd);
 194                 if (what & AD1816A_CAPTURE_ENABLE)
 195                         snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
 196                                 AD1816A_CAPTURE_ENABLE, cmd);
 197                 spin_unlock(&chip->lock);
 198                 break;
 199         default:
 200                 snd_printk("invalid trigger mode 0x%x.\n", what);
 201                 error = -EINVAL;
 202         }
 203
 204         return error;
 205 }
 206
 207 static int snd_ad1816a_playback_trigger(snd_pcm_substream_t *substream, int cmd)
 208 {
 209         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 210         return snd_ad1816a_trigger(chip, AD1816A_PLAYBACK_ENABLE,
 211                 SNDRV_PCM_STREAM_PLAYBACK, cmd);
 212 }
 213
 214 static int snd_ad1816a_capture_trigger(snd_pcm_substream_t *substream, int cmd)
 215 {
 216         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 217         return snd_ad1816a_trigger(chip, AD1816A_CAPTURE_ENABLE,
 218                 SNDRV_PCM_STREAM_CAPTURE, cmd);
 219 }
 220
 221 static int snd_ad1816a_hw_params(snd_pcm_substream_t * substream,
 222                                  snd_pcm_hw_params_t * hw_params)
 223 {
 224         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 225 }
 226
 227 static int snd_ad1816a_hw_free(snd_pcm_substream_t * substream)
 228 {
 229         return snd_pcm_lib_free_pages(substream);
 230 }
 231
 232 static int snd_ad1816a_playback_prepare(snd_pcm_substream_t *substream)
 233 {
 234         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 235         unsigned long flags;
 236         snd_pcm_runtime_t *runtime = substream->runtime;
 237         unsigned int size;
 238
 239         spin_lock_irqsave(&chip->lock, flags);
 240
 241         chip->p_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
 242         snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
 243                 AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
 244
 245         snd_dma_program(chip->dma1, runtime->dma_addr, size,
 246                         DMA_MODE_WRITE | DMA_AUTOINIT);
 247
 248         snd_ad1816a_write(chip, AD1816A_PLAYBACK_SAMPLE_RATE, runtime->rate);
 249         snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
 250                 AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
 251                 snd_ad1816a_get_format(chip, runtime->format,
 252                         runtime->channels));
 253
 254         snd_ad1816a_write(chip, AD1816A_PLAYBACK_BASE_COUNT,
 255                 snd_pcm_lib_period_bytes(substream) / 4 - 1);
 256
 257         spin_unlock_irqrestore(&chip->lock, flags);
 258         return 0;
 259 }
 260
 261 static int snd_ad1816a_capture_prepare(snd_pcm_substream_t *substream)
 262 {
 263         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 264         unsigned long flags;
 265         snd_pcm_runtime_t *runtime = substream->runtime;
 266         unsigned int size;
 267
 268         spin_lock_irqsave(&chip->lock, flags);
 269
 270         chip->c_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
 271         snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
 272                 AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
 273
 274         snd_dma_program(chip->dma2, runtime->dma_addr, size,
 275                         DMA_MODE_READ | DMA_AUTOINIT);
 276
 277         snd_ad1816a_write(chip, AD1816A_CAPTURE_SAMPLE_RATE, runtime->rate);
 278         snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
 279                 AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
 280                 snd_ad1816a_get_format(chip, runtime->format,
 281                         runtime->channels));
 282
 283         snd_ad1816a_write(chip, AD1816A_CAPTURE_BASE_COUNT,
 284                 snd_pcm_lib_period_bytes(substream) / 4 - 1);
 285
 286         spin_unlock_irqrestore(&chip->lock, flags);
 287         return 0;
 288 }
 289
 290
 291 static snd_pcm_uframes_t snd_ad1816a_playback_pointer(snd_pcm_substream_t *substream)
 292 {
 293         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 294         size_t ptr;
 295         if (!(chip->mode & AD1816A_MODE_PLAYBACK))
 296                 return 0;
 297         ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
 298         return bytes_to_frames(substream->runtime, ptr);
 299 }
 300
 301 static snd_pcm_uframes_t snd_ad1816a_capture_pointer(snd_pcm_substream_t *substream)
 302 {
 303         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 304         size_t ptr;
 305         if (!(chip->mode & AD1816A_MODE_CAPTURE))
 306                 return 0;
 307         ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
 308         return bytes_to_frames(substream->runtime, ptr);
 309 }
 310
 311
 312 static irqreturn_t snd_ad1816a_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 313 {
 314         ad1816a_t *chip = dev_id;
 315         unsigned char status;
 316
 317         spin_lock(&chip->lock);
 318         status = snd_ad1816a_in(chip, AD1816A_INTERRUPT_STATUS);
 319         spin_unlock(&chip->lock);
 320
 321         if ((status & AD1816A_PLAYBACK_IRQ_PENDING) && chip->playback_substream)
 322                 snd_pcm_period_elapsed(chip->playback_substream);
 323
 324         if ((status & AD1816A_CAPTURE_IRQ_PENDING) && chip->capture_substream)
 325                 snd_pcm_period_elapsed(chip->capture_substream);
 326
 327         if ((status & AD1816A_TIMER_IRQ_PENDING) && chip->timer)
 328                 snd_timer_interrupt(chip->timer, chip->timer->sticks);
 329
 330         spin_lock(&chip->lock);
 331         snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
 332         spin_unlock(&chip->lock);
 333         return IRQ_HANDLED;
 334 }
 335
 336
 337 static snd_pcm_hardware_t snd_ad1816a_playback = {
 338         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 339                                  SNDRV_PCM_INFO_MMAP_VALID),
 340         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 341                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
 342                                  SNDRV_PCM_FMTBIT_S16_BE),
 343         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 344         .rate_min =             4000,
 345         .rate_max =             55200,
 346         .channels_min =         1,
 347         .channels_max =         2,
 348         .buffer_bytes_max =     (128*1024),
 349         .period_bytes_min =     64,
 350         .period_bytes_max =     (128*1024),
 351         .periods_min =          1,
 352         .periods_max =          1024,
 353         .fifo_size =            0,
 354 };
 355
 356 static snd_pcm_hardware_t snd_ad1816a_capture = {
 357         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 358                                  SNDRV_PCM_INFO_MMAP_VALID),
 359         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 360                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
 361                                  SNDRV_PCM_FMTBIT_S16_BE),
 362         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 363         .rate_min =             4000,
 364         .rate_max =             55200,
 365         .channels_min =         1,
 366         .channels_max =         2,
 367         .buffer_bytes_max =     (128*1024),
 368         .period_bytes_min =     64,
 369         .period_bytes_max =     (128*1024),
 370         .periods_min =          1,
 371         .periods_max =          1024,
 372         .fifo_size =            0,
 373 };
 374
 375 #if 0 /* not used now */
 376 static int snd_ad1816a_timer_close(snd_timer_t *timer)
 377 {
 378         ad1816a_t *chip = snd_timer_chip(timer);
 379         snd_ad1816a_close(chip, AD1816A_MODE_TIMER);
 380         return 0;
 381 }
 382
 383 static int snd_ad1816a_timer_open(snd_timer_t *timer)
 384 {
 385         ad1816a_t *chip = snd_timer_chip(timer);
 386         snd_ad1816a_open(chip, AD1816A_MODE_TIMER);
 387         return 0;
 388 }
 389
 390 static unsigned long snd_ad1816a_timer_resolution(snd_timer_t *timer)
 391 {
 392         snd_assert(timer != NULL, return 0);
 393
 394         return 10000;
 395 }
 396
 397 static int snd_ad1816a_timer_start(snd_timer_t *timer)
 398 {
 399         unsigned short bits;
 400         unsigned long flags;
 401         ad1816a_t *chip = snd_timer_chip(timer);
 402         spin_lock_irqsave(&chip->lock, flags);
 403         bits = snd_ad1816a_read(chip, AD1816A_INTERRUPT_ENABLE);
 404
 405         if (!(bits & AD1816A_TIMER_ENABLE)) {
 406                 snd_ad1816a_write(chip, AD1816A_TIMER_BASE_COUNT,
 407                         timer->sticks & 0xffff);
 408
 409                 snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
 410                         AD1816A_TIMER_ENABLE, 0xffff);
 411         }
 412         spin_unlock_irqrestore(&chip->lock, flags);
 413         return 0;
 414 }
 415
 416 static int snd_ad1816a_timer_stop(snd_timer_t *timer)
 417 {
 418         unsigned long flags;
 419         ad1816a_t *chip = snd_timer_chip(timer);
 420         spin_lock_irqsave(&chip->lock, flags);
 421
 422         snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
 423                 AD1816A_TIMER_ENABLE, 0x0000);
 424
 425         spin_unlock_irqrestore(&chip->lock, flags);
 426         return 0;
 427 }
 428
 429 static struct _snd_timer_hardware snd_ad1816a_timer_table = {
 430         .flags =        SNDRV_TIMER_HW_AUTO,
 431         .resolution =   10000,
 432         .ticks =        65535,
 433         .open =         snd_ad1816a_timer_open,
 434         .close =        snd_ad1816a_timer_close,
 435         .c_resolution = snd_ad1816a_timer_resolution,
 436         .start =        snd_ad1816a_timer_start,
 437         .stop =         snd_ad1816a_timer_stop,
 438 };
 439 #endif /* not used now */
 440
 441
 442 static int snd_ad1816a_playback_open(snd_pcm_substream_t *substream)
 443 {
 444         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 445         snd_pcm_runtime_t *runtime = substream->runtime;
 446         int error;
 447
 448         if ((error = snd_ad1816a_open(chip, AD1816A_MODE_PLAYBACK)) < 0)
 449                 return error;
 450         snd_pcm_set_sync(substream);
 451         runtime->hw = snd_ad1816a_playback;
 452         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
 453         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
 454         chip->playback_substream = substream;
 455         return 0;
 456 }
 457
 458 static int snd_ad1816a_capture_open(snd_pcm_substream_t *substream)
 459 {
 460         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 461         snd_pcm_runtime_t *runtime = substream->runtime;
 462         int error;
 463
 464         if ((error = snd_ad1816a_open(chip, AD1816A_MODE_CAPTURE)) < 0)
 465                 return error;
 466         snd_pcm_set_sync(substream);
 467         runtime->hw = snd_ad1816a_capture;
 468         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
 469         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
 470         chip->capture_substream = substream;
 471         return 0;
 472 }
 473
 474 static int snd_ad1816a_playback_close(snd_pcm_substream_t *substream)
 475 {
 476         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 477
 478         chip->playback_substream = NULL;
 479         snd_ad1816a_close(chip, AD1816A_MODE_PLAYBACK);
 480         return 0;
 481 }
 482
 483 static int snd_ad1816a_capture_close(snd_pcm_substream_t *substream)
 484 {
 485         ad1816a_t *chip = snd_pcm_substream_chip(substream);
 486
 487         chip->capture_substream = NULL;
 488         snd_ad1816a_close(chip, AD1816A_MODE_CAPTURE);
 489         return 0;
 490 }
 491
 492
 493 static void snd_ad1816a_init(ad1816a_t *chip)
 494 {
 495         unsigned long flags;
 496
 497         spin_lock_irqsave(&chip->lock, flags);
 498
 499         snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
 500         snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
 501                 AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
 502         snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
 503                 AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
 504         snd_ad1816a_write(chip, AD1816A_INTERRUPT_ENABLE, 0x0000);
 505         snd_ad1816a_write_mask(chip, AD1816A_CHIP_CONFIG,
 506                 AD1816A_CAPTURE_NOT_EQUAL | AD1816A_WSS_ENABLE, 0xffff);
 507         snd_ad1816a_write(chip, AD1816A_DSP_CONFIG, 0x0000);
 508         snd_ad1816a_write(chip, AD1816A_POWERDOWN_CTRL, 0x0000);
 509
 510         spin_unlock_irqrestore(&chip->lock, flags);
 511 }
 512
 513 static int snd_ad1816a_probe(ad1816a_t *chip)
 514 {
 515         unsigned long flags;
 516
 517         spin_lock_irqsave(&chip->lock, flags);
 518
 519         switch (chip->version = snd_ad1816a_read(chip, AD1816A_VERSION_ID)) {
 520         case 0:
 521                 chip->hardware = AD1816A_HW_AD1815;
 522                 break;
 523         case 1:
 524                 chip->hardware = AD1816A_HW_AD18MAX10;
 525                 break;
 526         case 3:
 527                 chip->hardware = AD1816A_HW_AD1816A;
 528                 break;
 529         default:
 530                 chip->hardware = AD1816A_HW_AUTO;
 531         }
 532
 533         spin_unlock_irqrestore(&chip->lock, flags);
 534         return 0;
 535 }
 536
 537 static int snd_ad1816a_free(ad1816a_t *chip)
 538 {
 539         if (chip->res_port) {
 540                 release_resource(chip->res_port);
 541                 kfree_nocheck(chip->res_port);
 542         }
 543         if (chip->irq >= 0)
 544                 free_irq(chip->irq, (void *) chip);
 545         if (chip->dma1 >= 0) {
 546                 snd_dma_disable(chip->dma1);
 547                 free_dma(chip->dma1);
 548         }
 549         if (chip->dma2 >= 0) {
 550                 snd_dma_disable(chip->dma2);
 551                 free_dma(chip->dma2);
 552         }
 553         kfree(chip);
 554         return 0;
 555 }
 556
 557 static int snd_ad1816a_dev_free(snd_device_t *device)
 558 {
 559         ad1816a_t *chip = device->device_data;
 560         return snd_ad1816a_free(chip);
 561 }
 562
 563 static const char *snd_ad1816a_chip_id(ad1816a_t *chip)
 564 {
 565         switch (chip->hardware) {
 566         case AD1816A_HW_AD1816A: return "AD1816A";
 567         case AD1816A_HW_AD1815: return "AD1815";
 568         case AD1816A_HW_AD18MAX10: return "AD18max10";
 569         default:
 570                 snd_printk("Unknown chip version %d:%d.\n",
 571                         chip->version, chip->hardware);
 572                 return "AD1816A - unknown";
 573         }
 574 }
 575
 576 int snd_ad1816a_create(snd_card_t *card,
 577                        unsigned long port, int irq, int dma1, int dma2,
 578                        ad1816a_t **rchip)
 579 {
 580         static snd_device_ops_t ops = {
 581                 .dev_free =     snd_ad1816a_dev_free,
 582         };
 583         int error;
 584         ad1816a_t *chip;
 585
 586         *rchip = NULL;
 587
 588         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
 589         if (chip == NULL)
 590                 return -ENOMEM;
 591         chip->irq = -1;
 592         chip->dma1 = -1;
 593         chip->dma2 = -1;
 594
 595         if ((chip->res_port = request_region(port, 16, "AD1816A")) == NULL) {
 596                 snd_printk(KERN_ERR "ad1816a: can't grab port 0x%lx\n", port);
 597                 snd_ad1816a_free(chip);
 598                 return -EBUSY;
 599         }
 600         if (request_irq(irq, snd_ad1816a_interrupt, SA_INTERRUPT, "AD1816A", (void *) chip)) {
 601                 snd_printk(KERN_ERR "ad1816a: can't grab IRQ %d\n", irq);
 602                 snd_ad1816a_free(chip);
 603                 return -EBUSY;
 604         }
 605         chip->irq = irq;
 606         if (request_dma(dma1, "AD1816A - 1")) {
 607                 snd_printk(KERN_ERR "ad1816a: can't grab DMA1 %d\n", dma1);
 608                 snd_ad1816a_free(chip);
 609                 return -EBUSY;
 610         }
 611         chip->dma1 = dma1;
 612         if (request_dma(dma2, "AD1816A - 2")) {
 613                 snd_printk(KERN_ERR "ad1816a: can't grab DMA2 %d\n", dma2);
 614                 snd_ad1816a_free(chip);
 615                 return -EBUSY;
 616         }
 617         chip->dma2 = dma2;
 618
 619         chip->card = card;
 620         chip->port = port;
 621         spin_lock_init(&chip->lock);
 622
 623         if ((error = snd_ad1816a_probe(chip))) {
 624                 snd_ad1816a_free(chip);
 625                 return error;
 626         }
 627
 628         snd_ad1816a_init(chip);
 629
 630         /* Register device */
 631         if ((error = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 632                 snd_ad1816a_free(chip);
 633                 return error;
 634         }
 635
 636         *rchip = chip;
 637         return 0;
 638 }
 639
 640 static snd_pcm_ops_t snd_ad1816a_playback_ops = {
 641         .open =         snd_ad1816a_playback_open,
 642         .close =        snd_ad1816a_playback_close,
 643         .ioctl =        snd_pcm_lib_ioctl,
 644         .hw_params =    snd_ad1816a_hw_params,
 645         .hw_free =      snd_ad1816a_hw_free,
 646         .prepare =      snd_ad1816a_playback_prepare,
 647         .trigger =      snd_ad1816a_playback_trigger,
 648         .pointer =      snd_ad1816a_playback_pointer,
 649 };
 650
 651 static snd_pcm_ops_t snd_ad1816a_capture_ops = {
 652         .open =         snd_ad1816a_capture_open,
 653         .close =        snd_ad1816a_capture_close,
 654         .ioctl =        snd_pcm_lib_ioctl,
 655         .hw_params =    snd_ad1816a_hw_params,
 656         .hw_free =      snd_ad1816a_hw_free,
 657         .prepare =      snd_ad1816a_capture_prepare,
 658         .trigger =      snd_ad1816a_capture_trigger,
 659         .pointer =      snd_ad1816a_capture_pointer,
 660 };
 661
 662 static void snd_ad1816a_pcm_free(snd_pcm_t *pcm)
 663 {
 664         ad1816a_t *chip = pcm->private_data;
 665         chip->pcm = NULL;
 666         snd_pcm_lib_preallocate_free_for_all(pcm);
 667 }
 668
 669 int snd_ad1816a_pcm(ad1816a_t *chip, int device, snd_pcm_t **rpcm)
 670 {
 671         int error;
 672         snd_pcm_t *pcm;
 673
 674         if ((error = snd_pcm_new(chip->card, "AD1816A", device, 1, 1, &pcm)))
 675                 return error;
 676
 677         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1816a_playback_ops);
 678         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1816a_capture_ops);
 679
 680         pcm->private_data = chip;
 681         pcm->private_free = snd_ad1816a_pcm_free;
 682         pcm->info_flags = (chip->dma1 == chip->dma2 ) ? SNDRV_PCM_INFO_JOINT_DUPLEX : 0;
 683
 684         strcpy(pcm->name, snd_ad1816a_chip_id(chip));
 685         snd_ad1816a_init(chip);
 686
 687         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 688                                               snd_dma_isa_data(),
 689                                               64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
 690
 691         chip->pcm = pcm;
 692         if (rpcm)
 693                 *rpcm = pcm;
 694         return 0;
 695 }
 696
 697 #if 0 /* not used now */
 698 static void snd_ad1816a_timer_free(snd_timer_t *timer)
 699 {
 700         ad1816a_t *chip = timer->private_data;
 701         chip->timer = NULL;
 702 }
 703
 704 int snd_ad1816a_timer(ad1816a_t *chip, int device, snd_timer_t **rtimer)
 705 {
 706         snd_timer_t *timer;
 707         snd_timer_id_t tid;
 708         int error;
 709
 710         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
 711         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
 712         tid.card = chip->card->number;
 713         tid.device = device;
 714         tid.subdevice = 0;
 715         if ((error = snd_timer_new(chip->card, "AD1816A", &tid, &timer)) < 0)
 716                 return error;
 717         strcpy(timer->name, snd_ad1816a_chip_id(chip));
 718         timer->private_data = chip;
 719         timer->private_free = snd_ad1816a_timer_free;
 720         chip->timer = timer;
 721         timer->hw = snd_ad1816a_timer_table;
 722         if (rtimer)
 723                 *rtimer = timer;
 724         return 0;
 725 }
 726 #endif /* not used now */
 727
 728 /*
 729  *
 730  */
 731
 732 static int snd_ad1816a_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 733 {
 734         static char *texts[8] = {
 735                 "Line", "Mix", "CD", "Synth", "Video",
 736                 "Mic", "Phone",
 737         };
 738
 739         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 740         uinfo->count = 2;
 741         uinfo->value.enumerated.items = 7;
 742         if (uinfo->value.enumerated.item > 6)
 743                 uinfo->value.enumerated.item = 6;
 744         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
 745         return 0;
 746 }
 747
 748 static int snd_ad1816a_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 749 {
 750         ad1816a_t *chip = snd_kcontrol_chip(kcontrol);
 751         unsigned long flags;
 752         unsigned short val;
 753
 754         spin_lock_irqsave(&chip->lock, flags);
 755         val = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL);
 756         spin_unlock_irqrestore(&chip->lock, flags);
 757         ucontrol->value.enumerated.item[0] = (val >> 12) & 7;
 758         ucontrol->value.enumerated.item[1] = (val >> 4) & 7;
 759         return 0;
 760 }
 761
 762 static int snd_ad1816a_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 763 {
 764         ad1816a_t *chip = snd_kcontrol_chip(kcontrol);
 765         unsigned long flags;
 766         unsigned short val;
 767         int change;
 768
 769         if (ucontrol->value.enumerated.item[0] > 6 ||
 770             ucontrol->value.enumerated.item[1] > 6)
 771                 return -EINVAL;
 772         val = (ucontrol->value.enumerated.item[0] << 12) |
 773               (ucontrol->value.enumerated.item[1] << 4);
 774         spin_lock_irqsave(&chip->lock, flags);
 775         change = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL) != val;
 776         snd_ad1816a_write(chip, AD1816A_ADC_SOURCE_SEL, val);
 777         spin_unlock_irqrestore(&chip->lock, flags);
 778         return change;
 779 }
 780
 781 #define AD1816A_SINGLE(xname, reg, shift, mask, invert) \
 782 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ad1816a_info_single, \
 783   .get = snd_ad1816a_get_single, .put = snd_ad1816a_put_single, \
 784   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
 785
 786 static int snd_ad1816a_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 787 {
 788         int mask = (kcontrol->private_value >> 16) & 0xff;
 789
 790         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 791         uinfo->count = 1;
 792         uinfo->value.integer.min = 0;
 793         uinfo->value.integer.max = mask;
 794         return 0;
 795 }
 796
 797 static int snd_ad1816a_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 798 {
 799         ad1816a_t *chip = snd_kcontrol_chip(kcontrol);
 800         unsigned long flags;
 801         int reg = kcontrol->private_value & 0xff;
 802         int shift = (kcontrol->private_value >> 8) & 0xff;
 803         int mask = (kcontrol->private_value >> 16) & 0xff;
 804         int invert = (kcontrol->private_value >> 24) & 0xff;
 805
 806         spin_lock_irqsave(&chip->lock, flags);
 807         ucontrol->value.integer.value[0] = (snd_ad1816a_read(chip, reg) >> shift) & mask;
 808         spin_unlock_irqrestore(&chip->lock, flags);
 809         if (invert)
 810                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
 811         return 0;
 812 }
 813
 814 static int snd_ad1816a_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 815 {
 816         ad1816a_t *chip = snd_kcontrol_chip(kcontrol);
 817         unsigned long flags;
 818         int reg = kcontrol->private_value & 0xff;
 819         int shift = (kcontrol->private_value >> 8) & 0xff;
 820         int mask = (kcontrol->private_value >> 16) & 0xff;
 821         int invert = (kcontrol->private_value >> 24) & 0xff;
 822         int change;
 823         unsigned short old_val, val;
 824
 825         val = (ucontrol->value.integer.value[0] & mask);
 826         if (invert)
 827                 val = mask - val;
 828         val <<= shift;
 829         spin_lock_irqsave(&chip->lock, flags);
 830         old_val = snd_ad1816a_read(chip, reg);
 831         val = (old_val & ~(mask << shift)) | val;
 832         change = val != old_val;
 833         snd_ad1816a_write(chip, reg, val);
 834         spin_unlock_irqrestore(&chip->lock, flags);
 835         return change;
 836 }
 837
 838 #define AD1816A_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
 839 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ad1816a_info_double, \
 840   .get = snd_ad1816a_get_double, .put = snd_ad1816a_put_double, \
 841   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }
 842
 843 static int snd_ad1816a_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 844 {
 845         int mask = (kcontrol->private_value >> 16) & 0xff;
 846
 847         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
 848         uinfo->count = 2;
 849         uinfo->value.integer.min = 0;
 850         uinfo->value.integer.max = mask;
 851         return 0;
 852 }
 853
 854 static int snd_ad1816a_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 855 {
 856         ad1816a_t *chip = snd_kcontrol_chip(kcontrol);
 857         unsigned long flags;
 858         int reg = kcontrol->private_value & 0xff;
 859         int shift_left = (kcontrol->private_value >> 8) & 0x0f;
 860         int shift_right = (kcontrol->private_value >> 12) & 0x0f;
 861         int mask = (kcontrol->private_value >> 16) & 0xff;
 862         int invert = (kcontrol->private_value >> 24) & 0xff;
 863         unsigned short val;
 864
 865         spin_lock_irqsave(&chip->lock, flags);
 866         val = snd_ad1816a_read(chip, reg);
 867         ucontrol->value.integer.value[0] = (val >> shift_left) & mask;
 868         ucontrol->value.integer.value[1] = (val >> shift_right) & mask;
 869         spin_unlock_irqrestore(&chip->lock, flags);
 870         if (invert) {
 871                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
 872                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
 873         }
 874         return 0;
 875 }
 876
 877 static int snd_ad1816a_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 878 {
 879         ad1816a_t *chip = snd_kcontrol_chip(kcontrol);
 880         unsigned long flags;
 881         int reg = kcontrol->private_value & 0xff;
 882         int shift_left = (kcontrol->private_value >> 8) & 0x0f;
 883         int shift_right = (kcontrol->private_value >> 12) & 0x0f;
 884         int mask = (kcontrol->private_value >> 16) & 0xff;
 885         int invert = (kcontrol->private_value >> 24) & 0xff;
 886         int change;
 887         unsigned short old_val, val1, val2;
 888
 889         val1 = ucontrol->value.integer.value[0] & mask;
 890         val2 = ucontrol->value.integer.value[1] & mask;
 891         if (invert) {
 892                 val1 = mask - val1;
 893                 val2 = mask - val2;
 894         }
 895         val1 <<= shift_left;
 896         val2 <<= shift_right;
 897         spin_lock_irqsave(&chip->lock, flags);
 898         old_val = snd_ad1816a_read(chip, reg);
 899         val1 = (old_val & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
 900         change = val1 != old_val;
 901         snd_ad1816a_write(chip, reg, val1);
 902         spin_unlock_irqrestore(&chip->lock, flags);
 903         return change;
 904 }
 905
 906 static snd_kcontrol_new_t snd_ad1816a_controls[] = {
 907 AD1816A_DOUBLE("Master Playback Switch", AD1816A_MASTER_ATT, 15, 7, 1, 1),
 908 AD1816A_DOUBLE("Master Playback Volume", AD1816A_MASTER_ATT, 8, 0, 31, 1),
 909 AD1816A_DOUBLE("PCM Playback Switch", AD1816A_VOICE_ATT, 15, 7, 1, 1),
 910 AD1816A_DOUBLE("PCM Playback Volume", AD1816A_VOICE_ATT, 8, 0, 63, 1),
 911 AD1816A_DOUBLE("Line Playback Switch", AD1816A_LINE_GAIN_ATT, 15, 7, 1, 1),
 912 AD1816A_DOUBLE("Line Playback Volume", AD1816A_LINE_GAIN_ATT, 8, 0, 31, 1),
 913 AD1816A_DOUBLE("CD Playback Switch", AD1816A_CD_GAIN_ATT, 15, 7, 1, 1),
 914 AD1816A_DOUBLE("CD Playback Volume", AD1816A_CD_GAIN_ATT, 8, 0, 31, 1),
 915 AD1816A_DOUBLE("Synth Playback Switch", AD1816A_SYNTH_GAIN_ATT, 15, 7, 1, 1),
 916 AD1816A_DOUBLE("Synth Playback Volume", AD1816A_SYNTH_GAIN_ATT, 8, 0, 31, 1),
 917 AD1816A_DOUBLE("FM Playback Switch", AD1816A_FM_ATT, 15, 7, 1, 1),
 918 AD1816A_DOUBLE("FM Playback Volume", AD1816A_FM_ATT, 8, 0, 63, 1),
 919 AD1816A_SINGLE("Mic Playback Switch", AD1816A_MIC_GAIN_ATT, 15, 1, 1),
 920 AD1816A_SINGLE("Mic Playback Volume", AD1816A_MIC_GAIN_ATT, 8, 31, 1),
 921 AD1816A_SINGLE("Mic Boost", AD1816A_MIC_GAIN_ATT, 14, 1, 0),
 922 AD1816A_DOUBLE("Video Playback Switch", AD1816A_VID_GAIN_ATT, 15, 7, 1, 1),
 923 AD1816A_DOUBLE("Video Playback Volume", AD1816A_VID_GAIN_ATT, 8, 0, 31, 1),
 924 AD1816A_SINGLE("Phone Capture Switch", AD1816A_PHONE_IN_GAIN_ATT, 15, 1, 1),
 925 AD1816A_SINGLE("Phone Capture Volume", AD1816A_PHONE_IN_GAIN_ATT, 0, 15, 1),
 926 AD1816A_SINGLE("Phone Playback Switch", AD1816A_PHONE_OUT_ATT, 7, 1, 1),
 927 AD1816A_SINGLE("Phone Playback Volume", AD1816A_PHONE_OUT_ATT, 0, 31, 1),
 928 {
 929         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 930         .name = "Capture Source",
 931         .info = snd_ad1816a_info_mux,
 932         .get = snd_ad1816a_get_mux,
 933         .put = snd_ad1816a_put_mux,
 934 },
 935 AD1816A_DOUBLE("Capture Switch", AD1816A_ADC_PGA, 15, 7, 1, 1),
 936 AD1816A_DOUBLE("Capture Volume", AD1816A_ADC_PGA, 8, 0, 15, 0),
 937 AD1816A_SINGLE("3D Control - Switch", AD1816A_3D_PHAT_CTRL, 15, 1, 1),
 938 AD1816A_SINGLE("3D Control - Level", AD1816A_3D_PHAT_CTRL, 0, 15, 0),
 939 };
 940
 941 int snd_ad1816a_mixer(ad1816a_t *chip)
 942 {
 943         snd_card_t *card;
 944         unsigned int idx;
 945         int err;
 946
 947         snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
 948
 949         card = chip->card;
 950
 951         strcpy(card->mixername, snd_ad1816a_chip_id(chip));
 952
 953         for (idx = 0; idx < ARRAY_SIZE(snd_ad1816a_controls); idx++) {
 954                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ad1816a_controls[idx], chip))) < 0)
 955                         return err;
 956         }
 957         return 0;
 958 }
 959
 960 EXPORT_SYMBOL(snd_ad1816a_create);
 961 EXPORT_SYMBOL(snd_ad1816a_pcm);
 962 EXPORT_SYMBOL(snd_ad1816a_mixer);
 963
 964 static int __init alsa_ad1816a_init(void)
 965 {
 966         return 0;
 967 }
 968
 969 static void __exit alsa_ad1816a_exit(void)
 970 {
 971 }
 972
 973 module_init(alsa_ad1816a_init)
 974 module_exit(alsa_ad1816a_exit)