sound/isa/ad1848/ad1848_lib.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   3  *  Routines for control of AD1848/AD1847/CS4248
   4  *
   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
  22 #define SNDRV_MAIN_OBJECT_FILE
  23 #include <sound/driver.h>
  24 #include <linux/delay.h>
  25 #include <linux/init.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/pm.h>
  28 #include <linux/slab.h>
  29 #include <linux/ioport.h>
  30 #include <sound/core.h>
  31 #include <sound/ad1848.h>
  32 #include <sound/control.h>
  33 #include <sound/pcm_params.h>
  34
  35 #include <asm/io.h>
  36 #include <asm/dma.h>
  37
  38 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  39 MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
  40 MODULE_LICENSE("GPL");
  41
  42 #if 0
  43 #define SNDRV_DEBUG_MCE
  44 #endif
  45
  46 /*
  47  *  Some variables
  48  */
  49
  50 static unsigned char freq_bits[14] = {
  51         /* 5510 */      0x00 | AD1848_XTAL2,
  52         /* 6620 */      0x0E | AD1848_XTAL2,
  53         /* 8000 */      0x00 | AD1848_XTAL1,
  54         /* 9600 */      0x0E | AD1848_XTAL1,
  55         /* 11025 */     0x02 | AD1848_XTAL2,
  56         /* 16000 */     0x02 | AD1848_XTAL1,
  57         /* 18900 */     0x04 | AD1848_XTAL2,
  58         /* 22050 */     0x06 | AD1848_XTAL2,
  59         /* 27042 */     0x04 | AD1848_XTAL1,
  60         /* 32000 */     0x06 | AD1848_XTAL1,
  61         /* 33075 */     0x0C | AD1848_XTAL2,
  62         /* 37800 */     0x08 | AD1848_XTAL2,
  63         /* 44100 */     0x0A | AD1848_XTAL2,
  64         /* 48000 */     0x0C | AD1848_XTAL1
  65 };
  66
  67 static unsigned int rates[14] = {
  68         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
  69         27042, 32000, 33075, 37800, 44100, 48000
  70 };
  71
  72 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
  73         .count = 14,
  74         .list = rates,
  75         .mask = 0,
  76 };
  77
  78 static unsigned char snd_ad1848_original_image[16] =
  79 {
  80         0x00,                   /* 00 - lic */
  81         0x00,                   /* 01 - ric */
  82         0x9f,                   /* 02 - la1ic */
  83         0x9f,                   /* 03 - ra1ic */
  84         0x9f,                   /* 04 - la2ic */
  85         0x9f,                   /* 05 - ra2ic */
  86         0xbf,                   /* 06 - loc */
  87         0xbf,                   /* 07 - roc */
  88         0x20,                   /* 08 - dfr */
  89         AD1848_AUTOCALIB,       /* 09 - ic */
  90         0x00,                   /* 0a - pc */
  91         0x00,                   /* 0b - ti */
  92         0x00,                   /* 0c - mi */
  93         0x00,                   /* 0d - lbc */
  94         0x00,                   /* 0e - dru */
  95         0x00,                   /* 0f - drl */
  96 };
  97
  98 /*
  99  *  Basic I/O functions
 100  */
 101
 102 void snd_ad1848_out(ad1848_t *chip,
 103                            unsigned char reg,
 104                            unsigned char value)
 105 {
 106         int timeout;
 107
 108         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 109                 udelay(100);
 110 #ifdef CONFIG_SND_DEBUG
 111         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 112                 snd_printk("auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 113 #endif
 114         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 115         outb(chip->image[reg] = value, AD1848P(chip, REG));
 116         mb();
 117 #if 0
 118         printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
 119 #endif
 120 }
 121
 122 static void snd_ad1848_dout(ad1848_t *chip,
 123                             unsigned char reg, unsigned char value)
 124 {
 125         int timeout;
 126
 127         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 128                 udelay(100);
 129         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 130         outb(value, AD1848P(chip, REG));
 131         mb();
 132 }
 133
 134 static unsigned char snd_ad1848_in(ad1848_t *chip, unsigned char reg)
 135 {
 136         int timeout;
 137
 138         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 139                 udelay(100);
 140 #ifdef CONFIG_SND_DEBUG
 141         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 142                 snd_printk("auto calibration time out - reg = 0x%x\n", reg);
 143 #endif
 144         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 145         mb();
 146         return inb(AD1848P(chip, REG));
 147 }
 148
 149 #if 0
 150
 151 static void snd_ad1848_debug(ad1848_t *chip)
 152 {
 153         printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
 154         printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
 155         printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
 156         printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
 157         printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
 158         printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
 159         printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
 160         printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
 161         printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
 162         printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
 163         printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
 164         printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
 165         printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
 166         printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
 167         printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
 168         printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
 169         printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
 170         printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
 171 }
 172
 173 #endif
 174
 175 /*
 176  *  AD1848 detection / MCE routines
 177  */
 178
 179 static void snd_ad1848_mce_up(ad1848_t *chip)
 180 {
 181         unsigned long flags;
 182         int timeout;
 183
 184         for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 185                 udelay(100);
 186 #ifdef CONFIG_SND_DEBUG
 187         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 188                 snd_printk("mce_up - auto calibration time out (0)\n");
 189 #endif
 190         spin_lock_irqsave(&chip->reg_lock, flags);
 191         chip->mce_bit |= AD1848_MCE;
 192         timeout = inb(AD1848P(chip, REGSEL));
 193         if (timeout == 0x80)
 194                 snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
 195         if (!(timeout & AD1848_MCE))
 196                 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
 197         spin_unlock_irqrestore(&chip->reg_lock, flags);
 198 }
 199
 200 static void snd_ad1848_mce_down(ad1848_t *chip)
 201 {
 202         unsigned long flags;
 203         int timeout;
 204         signed long time;
 205
 206         spin_lock_irqsave(&chip->reg_lock, flags);
 207         for (timeout = 5; timeout > 0; timeout--)
 208                 inb(AD1848P(chip, REGSEL));
 209         /* end of cleanup sequence */
 210         for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 211                 udelay(100);
 212 #if 0
 213         printk("(1) timeout = %i\n", timeout);
 214 #endif
 215 #ifdef CONFIG_SND_DEBUG
 216         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 217                 snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
 218 #endif
 219         chip->mce_bit &= ~AD1848_MCE;
 220         timeout = inb(AD1848P(chip, REGSEL));
 221         outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
 222         if (timeout == 0x80)
 223                 snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
 224         if ((timeout & AD1848_MCE) == 0) {
 225                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 226                 return;
 227         }
 228         /* calibration process */
 229
 230         for (timeout = 500; timeout > 0 && (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0; timeout--);
 231         if ((snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0) {
 232                 snd_printd("mce_down - auto calibration time out (1)\n");
 233                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 234                 return;
 235         }
 236 #if 0
 237         printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
 238 #endif
 239         time = HZ / 4;
 240         while (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) {
 241                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 242                 if (time <= 0) {
 243                         snd_printk("mce_down - auto calibration time out (2)\n");
 244                         return;
 245                 }
 246                 set_current_state(TASK_INTERRUPTIBLE);
 247                 time = schedule_timeout(time);
 248                 spin_lock_irqsave(&chip->reg_lock, flags);
 249         }
 250 #if 0
 251         printk("(3) jiffies = %li\n", jiffies);
 252 #endif
 253         time = HZ / 10;
 254         while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
 255                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 256                 if (time <= 0) {
 257                         snd_printk("mce_down - auto calibration time out (3)\n");
 258                         return;
 259                 }
 260                 set_current_state(TASK_INTERRUPTIBLE);
 261                 time = schedule_timeout(time);
 262                 spin_lock_irqsave(&chip->reg_lock, flags);
 263         }
 264         spin_unlock_irqrestore(&chip->reg_lock, flags);
 265 #if 0
 266         printk("(4) jiffies = %li\n", jiffies);
 267         snd_printk("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
 268 #endif
 269 }
 270
 271 static unsigned int snd_ad1848_get_count(unsigned char format,
 272                                          unsigned int size)
 273 {
 274         switch (format & 0xe0) {
 275         case AD1848_LINEAR_16:
 276                 size >>= 1;
 277                 break;
 278         }
 279         if (format & AD1848_STEREO)
 280                 size >>= 1;
 281         return size;
 282 }
 283
 284 static int snd_ad1848_trigger(ad1848_t *chip, unsigned char what,
 285                               int channel, int cmd)
 286 {
 287         int result = 0;
 288
 289 #if 0
 290         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
 291 #endif
 292         spin_lock(&chip->reg_lock);
 293         if (cmd == SNDRV_PCM_TRIGGER_START) {
 294                 if (chip->image[AD1848_IFACE_CTRL] & what) {
 295                         spin_unlock(&chip->reg_lock);
 296                         return 0;
 297                 }
 298                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
 299                 chip->mode |= AD1848_MODE_RUNNING;
 300         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 301                 if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
 302                         spin_unlock(&chip->reg_lock);
 303                         return 0;
 304                 }
 305                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
 306                 chip->mode &= ~AD1848_MODE_RUNNING;
 307         } else {
 308                 result = -EINVAL;
 309         }
 310         spin_unlock(&chip->reg_lock);
 311         return result;
 312 }
 313
 314 /*
 315  *  CODEC I/O
 316  */
 317
 318 static unsigned char snd_ad1848_get_rate(unsigned int rate)
 319 {
 320         int i;
 321
 322         for (i = 0; i < 14; i++)
 323                 if (rate == rates[i])
 324                         return freq_bits[i];
 325         snd_BUG();
 326         return freq_bits[13];
 327 }
 328
 329 static int snd_ad1848_ioctl(snd_pcm_substream_t * substream,
 330                             unsigned int cmd, void *arg)
 331 {
 332         return snd_pcm_lib_ioctl(substream, cmd, arg);
 333 }
 334
 335 static unsigned char snd_ad1848_get_format(int format, int channels)
 336 {
 337         unsigned char rformat;
 338
 339         rformat = AD1848_LINEAR_8;
 340         switch (format) {
 341         case SNDRV_PCM_FORMAT_A_LAW:    rformat = AD1848_ALAW_8; break;
 342         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = AD1848_ULAW_8; break;
 343         case SNDRV_PCM_FORMAT_S16_LE:   rformat = AD1848_LINEAR_16; break;
 344         }
 345         if (channels > 1)
 346                 rformat |= AD1848_STEREO;
 347 #if 0
 348         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 349 #endif
 350         return rformat;
 351 }
 352
 353 static void snd_ad1848_calibrate_mute(ad1848_t *chip, int mute)
 354 {
 355         unsigned long flags;
 356
 357         mute = mute ? 1 : 0;
 358         spin_lock_irqsave(&chip->reg_lock, flags);
 359         if (chip->calibrate_mute == mute) {
 360                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 361                 return;
 362         }
 363         if (!mute) {
 364                 snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
 365                 snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
 366         }
 367         snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
 368         snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
 369         snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
 370         snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
 371         snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
 372         snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
 373         chip->calibrate_mute = mute;
 374         spin_unlock_irqrestore(&chip->reg_lock, flags);
 375 }
 376
 377 static void snd_ad1848_set_data_format(ad1848_t *chip, snd_pcm_hw_params_t *hw_params)
 378 {
 379         if (hw_params == NULL) {
 380                 chip->image[AD1848_DATA_FORMAT] = 0x20;
 381         } else {
 382                 chip->image[AD1848_DATA_FORMAT] =
 383                     snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
 384                     snd_ad1848_get_rate(params_rate(hw_params));
 385         }
 386         // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
 387 }
 388
 389 static int snd_ad1848_open(ad1848_t *chip, unsigned int mode)
 390 {
 391         unsigned long flags;
 392
 393         down(&chip->open_mutex);
 394         if (chip->mode & AD1848_MODE_OPEN) {
 395                 up(&chip->open_mutex);
 396                 return -EAGAIN;
 397         }
 398         snd_ad1848_mce_down(chip);
 399
 400 #ifdef SNDRV_DEBUG_MCE
 401         snd_printk("open: (1)\n");
 402 #endif
 403         snd_ad1848_mce_up(chip);
 404         spin_lock_irqsave(&chip->reg_lock, flags);
 405         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 406                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
 407                              AD1848_CALIB_MODE);
 408         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
 409         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 410         spin_unlock_irqrestore(&chip->reg_lock, flags);
 411         snd_ad1848_mce_down(chip);
 412
 413 #ifdef SNDRV_DEBUG_MCE
 414         snd_printk("open: (2)\n");
 415 #endif
 416
 417         snd_ad1848_set_data_format(chip, NULL);
 418
 419         snd_ad1848_mce_up(chip);
 420         spin_lock_irqsave(&chip->reg_lock, flags);
 421         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 422         spin_unlock_irqrestore(&chip->reg_lock, flags);
 423         snd_ad1848_mce_down(chip);
 424
 425 #ifdef SNDRV_DEBUG_MCE
 426         snd_printk("open: (3)\n");
 427 #endif
 428
 429         /* ok. now enable and ack CODEC IRQ */
 430         spin_lock_irqsave(&chip->reg_lock, flags);
 431         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 432         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 433         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
 434         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 435         spin_unlock_irqrestore(&chip->reg_lock, flags);
 436
 437         chip->mode = mode;
 438         up(&chip->open_mutex);
 439
 440         return 0;
 441 }
 442
 443 static void snd_ad1848_close(ad1848_t *chip)
 444 {
 445         unsigned long flags;
 446
 447         down(&chip->open_mutex);
 448         if (!chip->mode) {
 449                 up(&chip->open_mutex);
 450                 return;
 451         }
 452         /* disable IRQ */
 453         spin_lock_irqsave(&chip->reg_lock, flags);
 454         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 455         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 456         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
 457         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 458         spin_unlock_irqrestore(&chip->reg_lock, flags);
 459
 460         /* now disable capture & playback */
 461
 462         snd_ad1848_mce_up(chip);
 463         spin_lock_irqsave(&chip->reg_lock, flags);
 464         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 465                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 466         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 467         spin_unlock_irqrestore(&chip->reg_lock, flags);
 468         snd_ad1848_mce_down(chip);
 469
 470         /* clear IRQ again */
 471         spin_lock_irqsave(&chip->reg_lock, flags);
 472         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 473         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 474         spin_unlock_irqrestore(&chip->reg_lock, flags);
 475
 476         chip->mode = 0;
 477         up(&chip->open_mutex);
 478 }
 479
 480 /*
 481  *  ok.. exported functions..
 482  */
 483
 484 static int snd_ad1848_playback_trigger(snd_pcm_substream_t * substream,
 485                                        int cmd)
 486 {
 487         ad1848_t *chip = snd_pcm_substream_chip(substream);
 488         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
 489 }
 490
 491 static int snd_ad1848_capture_trigger(snd_pcm_substream_t * substream,
 492                                       int cmd)
 493 {
 494         ad1848_t *chip = snd_pcm_substream_chip(substream);
 495         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
 496 }
 497
 498 static int snd_ad1848_playback_hw_params(snd_pcm_substream_t * substream,
 499                                          snd_pcm_hw_params_t * hw_params)
 500 {
 501         ad1848_t *chip = snd_pcm_substream_chip(substream);
 502         unsigned long flags;
 503         int err;
 504
 505         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 506                 return err;
 507         snd_ad1848_calibrate_mute(chip, 1);
 508         snd_ad1848_set_data_format(chip, hw_params);
 509         snd_ad1848_mce_up(chip);
 510         spin_lock_irqsave(&chip->reg_lock, flags);
 511         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 512         spin_unlock_irqrestore(&chip->reg_lock, flags);
 513         snd_ad1848_mce_down(chip);
 514         snd_ad1848_calibrate_mute(chip, 0);
 515         return 0;
 516 }
 517
 518 static int snd_ad1848_playback_hw_free(snd_pcm_substream_t * substream)
 519 {
 520         return snd_pcm_lib_free_pages(substream);
 521 }
 522
 523 static int snd_ad1848_playback_prepare(snd_pcm_substream_t * substream)
 524 {
 525         ad1848_t *chip = snd_pcm_substream_chip(substream);
 526         snd_pcm_runtime_t *runtime = substream->runtime;
 527         unsigned long flags;
 528         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 529         unsigned int count = snd_pcm_lib_period_bytes(substream);
 530
 531         chip->dma_size = size;
 532         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
 533         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 534         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 535         spin_lock_irqsave(&chip->reg_lock, flags);
 536         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 537         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 538         spin_unlock_irqrestore(&chip->reg_lock, flags);
 539         return 0;
 540 }
 541
 542 static int snd_ad1848_capture_hw_params(snd_pcm_substream_t * substream,
 543                                         snd_pcm_hw_params_t * hw_params)
 544 {
 545         ad1848_t *chip = snd_pcm_substream_chip(substream);
 546         unsigned long flags;
 547         int err;
 548
 549         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 550                 return err;
 551         snd_ad1848_calibrate_mute(chip, 1);
 552         snd_ad1848_set_data_format(chip, hw_params);
 553         snd_ad1848_mce_up(chip);
 554         spin_lock_irqsave(&chip->reg_lock, flags);
 555         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 556         spin_unlock_irqrestore(&chip->reg_lock, flags);
 557         snd_ad1848_mce_down(chip);
 558         snd_ad1848_calibrate_mute(chip, 0);
 559         return 0;
 560 }
 561
 562 static int snd_ad1848_capture_hw_free(snd_pcm_substream_t * substream)
 563 {
 564         return snd_pcm_lib_free_pages(substream);
 565 }
 566
 567 static int snd_ad1848_capture_prepare(snd_pcm_substream_t * substream)
 568 {
 569         ad1848_t *chip = snd_pcm_substream_chip(substream);
 570         snd_pcm_runtime_t *runtime = substream->runtime;
 571         unsigned long flags;
 572         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 573         unsigned int count = snd_pcm_lib_period_bytes(substream);
 574
 575         chip->dma_size = size;
 576         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 577         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 578         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 579         spin_lock_irqsave(&chip->reg_lock, flags);
 580         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 581         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 582         spin_unlock_irqrestore(&chip->reg_lock, flags);
 583         return 0;
 584 }
 585
 586 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 587 {
 588         ad1848_t *chip = dev_id;
 589
 590         if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
 591             (chip->mode & AD1848_MODE_RUNNING))
 592                 snd_pcm_period_elapsed(chip->playback_substream);
 593         if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
 594             (chip->mode & AD1848_MODE_RUNNING))
 595                 snd_pcm_period_elapsed(chip->capture_substream);
 596         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
 597         return IRQ_HANDLED;
 598 }
 599
 600 static snd_pcm_uframes_t snd_ad1848_playback_pointer(snd_pcm_substream_t * substream)
 601 {
 602         ad1848_t *chip = snd_pcm_substream_chip(substream);
 603         size_t ptr;
 604
 605         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
 606                 return 0;
 607         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 608         return bytes_to_frames(substream->runtime, ptr);
 609 }
 610
 611 static snd_pcm_uframes_t snd_ad1848_capture_pointer(snd_pcm_substream_t * substream)
 612 {
 613         ad1848_t *chip = snd_pcm_substream_chip(substream);
 614         size_t ptr;
 615
 616         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
 617                 return 0;
 618         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 619         return bytes_to_frames(substream->runtime, ptr);
 620 }
 621
 622 /*
 623
 624  */
 625
 626 static void snd_ad1848_thinkpad_twiddle(ad1848_t *chip, int on) {
 627
 628         int tmp;
 629
 630         if (!chip->thinkpad_flag) return;
 631
 632         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
 633         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
 634
 635         if (on)
 636                 /* turn it on */
 637                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
 638         else
 639                 /* turn it off */
 640                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
 641
 642         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
 643
 644 }
 645
 646 #ifdef CONFIG_PM
 647 static int snd_ad1848_suspend(snd_card_t *card, pm_message_t state)
 648 {
 649         ad1848_t *chip = card->pm_private_data;
 650
 651         snd_pcm_suspend_all(chip->pcm);
 652         /* FIXME: save registers? */
 653
 654         if (chip->thinkpad_flag)
 655                 snd_ad1848_thinkpad_twiddle(chip, 0);
 656
 657         return 0;
 658 }
 659
 660 static int snd_ad1848_resume(snd_card_t *card)
 661 {
 662         ad1848_t *chip = card->pm_private_data;
 663
 664         if (chip->thinkpad_flag)
 665                 snd_ad1848_thinkpad_twiddle(chip, 1);
 666
 667         /* FIXME: restore registers? */
 668
 669         return 0;
 670 }
 671 #endif /* CONFIG_PM */
 672
 673 static int snd_ad1848_probe(ad1848_t * chip)
 674 {
 675         unsigned long flags;
 676         int i, id, rev, ad1847;
 677         unsigned char *ptr;
 678
 679 #if 0
 680         snd_ad1848_debug(chip);
 681 #endif
 682         id = ad1847 = 0;
 683         for (i = 0; i < 1000; i++) {
 684                 mb();
 685                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 686                         udelay(500);
 687                 else {
 688                         spin_lock_irqsave(&chip->reg_lock, flags);
 689                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 690                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
 691                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
 692                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
 693                         if (rev == 0x65) {
 694                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 695                                 id = 1;
 696                                 ad1847 = 1;
 697                                 break;
 698                         }
 699                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
 700                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 701                                 id = 1;
 702                                 break;
 703                         }
 704                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 705                 }
 706         }
 707         if (id != 1)
 708                 return -ENODEV; /* no valid device found */
 709         if (chip->hardware == AD1848_HW_DETECT) {
 710                 if (ad1847) {
 711                         chip->hardware = AD1848_HW_AD1847;
 712                 } else {
 713                         chip->hardware = AD1848_HW_AD1848;
 714                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
 715                         if (rev & 0x80) {
 716                                 chip->hardware = AD1848_HW_CS4248;
 717                         } else if ((rev & 0x0f) == 0x0a) {
 718                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
 719                                 for (i = 0; i < 16; ++i) {
 720                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
 721                                                 chip->hardware = AD1848_HW_CMI8330;
 722                                                 break;
 723                                         }
 724                                 }
 725                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 726                         }
 727                 }
 728         }
 729         spin_lock_irqsave(&chip->reg_lock, flags);
 730         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
 731         outb(0, AD1848P(chip, STATUS));
 732         mb();
 733         spin_unlock_irqrestore(&chip->reg_lock, flags);
 734
 735         chip->image[AD1848_MISC_INFO] = 0x00;
 736         chip->image[AD1848_IFACE_CTRL] =
 737             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
 738         ptr = (unsigned char *) &chip->image;
 739         snd_ad1848_mce_down(chip);
 740         spin_lock_irqsave(&chip->reg_lock, flags);
 741         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
 742                 snd_ad1848_out(chip, i, *ptr++);
 743         spin_unlock_irqrestore(&chip->reg_lock, flags);
 744         snd_ad1848_mce_up(chip);
 745         snd_ad1848_mce_down(chip);
 746         return 0;               /* all things are ok.. */
 747 }
 748
 749 /*
 750
 751  */
 752
 753 static snd_pcm_hardware_t snd_ad1848_playback =
 754 {
 755         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 756                                  SNDRV_PCM_INFO_MMAP_VALID),
 757         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 758                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 759         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 760         .rate_min =             5510,
 761         .rate_max =             48000,
 762         .channels_min =         1,
 763         .channels_max =         2,
 764         .buffer_bytes_max =     (128*1024),
 765         .period_bytes_min =     64,
 766         .period_bytes_max =     (128*1024),
 767         .periods_min =          1,
 768         .periods_max =          1024,
 769         .fifo_size =            0,
 770 };
 771
 772 static snd_pcm_hardware_t snd_ad1848_capture =
 773 {
 774         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 775                                  SNDRV_PCM_INFO_MMAP_VALID),
 776         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 777                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 778         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 779         .rate_min =             5510,
 780         .rate_max =             48000,
 781         .channels_min =         1,
 782         .channels_max =         2,
 783         .buffer_bytes_max =     (128*1024),
 784         .period_bytes_min =     64,
 785         .period_bytes_max =     (128*1024),
 786         .periods_min =          1,
 787         .periods_max =          1024,
 788         .fifo_size =            0,
 789 };
 790
 791 /*
 792
 793  */
 794
 795 static int snd_ad1848_playback_open(snd_pcm_substream_t * substream)
 796 {
 797         ad1848_t *chip = snd_pcm_substream_chip(substream);
 798         snd_pcm_runtime_t *runtime = substream->runtime;
 799         int err;
 800
 801         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
 802                 return err;
 803         chip->playback_substream = substream;
 804         runtime->hw = snd_ad1848_playback;
 805         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 806         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 807         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 808         return 0;
 809 }
 810
 811 static int snd_ad1848_capture_open(snd_pcm_substream_t * substream)
 812 {
 813         ad1848_t *chip = snd_pcm_substream_chip(substream);
 814         snd_pcm_runtime_t *runtime = substream->runtime;
 815         int err;
 816
 817         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
 818                 return err;
 819         chip->capture_substream = substream;
 820         runtime->hw = snd_ad1848_capture;
 821         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 822         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 823         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 824         return 0;
 825 }
 826
 827 static int snd_ad1848_playback_close(snd_pcm_substream_t * substream)
 828 {
 829         ad1848_t *chip = snd_pcm_substream_chip(substream);
 830
 831         chip->mode &= ~AD1848_MODE_PLAY;
 832         chip->playback_substream = NULL;
 833         snd_ad1848_close(chip);
 834         return 0;
 835 }
 836
 837 static int snd_ad1848_capture_close(snd_pcm_substream_t * substream)
 838 {
 839         ad1848_t *chip = snd_pcm_substream_chip(substream);
 840
 841         chip->mode &= ~AD1848_MODE_CAPTURE;
 842         chip->capture_substream = NULL;
 843         snd_ad1848_close(chip);
 844         return 0;
 845 }
 846
 847 static int snd_ad1848_free(ad1848_t *chip)
 848 {
 849         if (chip->res_port) {
 850                 release_resource(chip->res_port);
 851                 kfree_nocheck(chip->res_port);
 852         }
 853         if (chip->irq >= 0)
 854                 free_irq(chip->irq, (void *) chip);
 855         if (chip->dma >= 0) {
 856                 snd_dma_disable(chip->dma);
 857                 free_dma(chip->dma);
 858         }
 859         kfree(chip);
 860         return 0;
 861 }
 862
 863 static int snd_ad1848_dev_free(snd_device_t *device)
 864 {
 865         ad1848_t *chip = device->device_data;
 866         return snd_ad1848_free(chip);
 867 }
 868
 869 static const char *snd_ad1848_chip_id(ad1848_t *chip)
 870 {
 871         switch (chip->hardware) {
 872         case AD1848_HW_AD1847:  return "AD1847";
 873         case AD1848_HW_AD1848:  return "AD1848";
 874         case AD1848_HW_CS4248:  return "CS4248";
 875         case AD1848_HW_CMI8330: return "CMI8330/C3D";
 876         default:                return "???";
 877         }
 878 }
 879
 880 int snd_ad1848_create(snd_card_t * card,
 881                       unsigned long port,
 882                       int irq, int dma,
 883                       unsigned short hardware,
 884                       ad1848_t ** rchip)
 885 {
 886         static snd_device_ops_t ops = {
 887                 .dev_free =     snd_ad1848_dev_free,
 888         };
 889         ad1848_t *chip;
 890         int err;
 891
 892         *rchip = NULL;
 893         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
 894         if (chip == NULL)
 895                 return -ENOMEM;
 896         spin_lock_init(&chip->reg_lock);
 897         init_MUTEX(&chip->open_mutex);
 898         chip->card = card;
 899         chip->port = port;
 900         chip->irq = -1;
 901         chip->dma = -1;
 902         chip->hardware = hardware;
 903         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
 904
 905         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
 906                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
 907                 snd_ad1848_free(chip);
 908                 return -EBUSY;
 909         }
 910         if (request_irq(irq, snd_ad1848_interrupt, SA_INTERRUPT, "AD1848", (void *) chip)) {
 911                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
 912                 snd_ad1848_free(chip);
 913                 return -EBUSY;
 914         }
 915         chip->irq = irq;
 916         if (request_dma(dma, "AD1848")) {
 917                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
 918                 snd_ad1848_free(chip);
 919                 return -EBUSY;
 920         }
 921         chip->dma = dma;
 922
 923         if (hardware == AD1848_HW_THINKPAD) {
 924                 chip->thinkpad_flag = 1;
 925                 chip->hardware = AD1848_HW_DETECT; /* reset */
 926                 snd_ad1848_thinkpad_twiddle(chip, 1);
 927                 snd_card_set_isa_pm_callback(card, snd_ad1848_suspend, snd_ad1848_resume, chip);
 928         }
 929
 930         if (snd_ad1848_probe(chip) < 0) {
 931                 snd_ad1848_free(chip);
 932                 return -ENODEV;
 933         }
 934
 935         /* Register device */
 936         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 937                 snd_ad1848_free(chip);
 938                 return err;
 939         }
 940
 941         *rchip = chip;
 942         return 0;
 943 }
 944
 945 static snd_pcm_ops_t snd_ad1848_playback_ops = {
 946         .open =         snd_ad1848_playback_open,
 947         .close =        snd_ad1848_playback_close,
 948         .ioctl =        snd_ad1848_ioctl,
 949         .hw_params =    snd_ad1848_playback_hw_params,
 950         .hw_free =      snd_ad1848_playback_hw_free,
 951         .prepare =      snd_ad1848_playback_prepare,
 952         .trigger =      snd_ad1848_playback_trigger,
 953         .pointer =      snd_ad1848_playback_pointer,
 954 };
 955
 956 static snd_pcm_ops_t snd_ad1848_capture_ops = {
 957         .open =         snd_ad1848_capture_open,
 958         .close =        snd_ad1848_capture_close,
 959         .ioctl =        snd_ad1848_ioctl,
 960         .hw_params =    snd_ad1848_capture_hw_params,
 961         .hw_free =      snd_ad1848_capture_hw_free,
 962         .prepare =      snd_ad1848_capture_prepare,
 963         .trigger =      snd_ad1848_capture_trigger,
 964         .pointer =      snd_ad1848_capture_pointer,
 965 };
 966
 967 static void snd_ad1848_pcm_free(snd_pcm_t *pcm)
 968 {
 969         ad1848_t *chip = pcm->private_data;
 970         chip->pcm = NULL;
 971         snd_pcm_lib_preallocate_free_for_all(pcm);
 972 }
 973
 974 int snd_ad1848_pcm(ad1848_t *chip, int device, snd_pcm_t **rpcm)
 975 {
 976         snd_pcm_t *pcm;
 977         int err;
 978
 979         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
 980                 return err;
 981
 982         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
 983         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
 984
 985         pcm->private_free = snd_ad1848_pcm_free;
 986         pcm->private_data = chip;
 987         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 988         strcpy(pcm->name, snd_ad1848_chip_id(chip));
 989
 990         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 991                                               snd_dma_isa_data(),
 992                                               64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
 993
 994         chip->pcm = pcm;
 995         if (rpcm)
 996                 *rpcm = pcm;
 997         return 0;
 998 }
 999
1000 const snd_pcm_ops_t *snd_ad1848_get_pcm_ops(int direction)
1001 {
1002         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
1003                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
1004 }
1005
1006 /*
1007  *  MIXER part
1008  */
1009
1010 static int snd_ad1848_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1011 {
1012         static char *texts[4] = {
1013                 "Line", "Aux", "Mic", "Mix"
1014         };
1015
1016         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1017         uinfo->count = 2;
1018         uinfo->value.enumerated.items = 4;
1019         if (uinfo->value.enumerated.item > 3)
1020                 uinfo->value.enumerated.item = 3;
1021         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1022         return 0;
1023 }
1024
1025 static int snd_ad1848_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1026 {
1027         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1028         unsigned long flags;
1029
1030         spin_lock_irqsave(&chip->reg_lock, flags);
1031         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1032         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1033         spin_unlock_irqrestore(&chip->reg_lock, flags);
1034         return 0;
1035 }
1036
1037 static int snd_ad1848_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1038 {
1039         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1040         unsigned long flags;
1041         unsigned short left, right;
1042         int change;
1043
1044         if (ucontrol->value.enumerated.item[0] > 3 ||
1045             ucontrol->value.enumerated.item[1] > 3)
1046                 return -EINVAL;
1047         left = ucontrol->value.enumerated.item[0] << 6;
1048         right = ucontrol->value.enumerated.item[1] << 6;
1049         spin_lock_irqsave(&chip->reg_lock, flags);
1050         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1051         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1052         change = left != chip->image[AD1848_LEFT_INPUT] ||
1053                  right != chip->image[AD1848_RIGHT_INPUT];
1054         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1055         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1056         spin_unlock_irqrestore(&chip->reg_lock, flags);
1057         return change;
1058 }
1059
1060 static int snd_ad1848_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1061 {
1062         int mask = (kcontrol->private_value >> 16) & 0xff;
1063
1064         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1065         uinfo->count = 1;
1066         uinfo->value.integer.min = 0;
1067         uinfo->value.integer.max = mask;
1068         return 0;
1069 }
1070
1071 static int snd_ad1848_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1072 {
1073         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1074         unsigned long flags;
1075         int reg = kcontrol->private_value & 0xff;
1076         int shift = (kcontrol->private_value >> 8) & 0xff;
1077         int mask = (kcontrol->private_value >> 16) & 0xff;
1078         int invert = (kcontrol->private_value >> 24) & 0xff;
1079
1080         spin_lock_irqsave(&chip->reg_lock, flags);
1081         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1082         spin_unlock_irqrestore(&chip->reg_lock, flags);
1083         if (invert)
1084                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1085         return 0;
1086 }
1087
1088 static int snd_ad1848_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1089 {
1090         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1091         unsigned long flags;
1092         int reg = kcontrol->private_value & 0xff;
1093         int shift = (kcontrol->private_value >> 8) & 0xff;
1094         int mask = (kcontrol->private_value >> 16) & 0xff;
1095         int invert = (kcontrol->private_value >> 24) & 0xff;
1096         int change;
1097         unsigned short val;
1098
1099         val = (ucontrol->value.integer.value[0] & mask);
1100         if (invert)
1101                 val = mask - val;
1102         val <<= shift;
1103         spin_lock_irqsave(&chip->reg_lock, flags);
1104         val = (chip->image[reg] & ~(mask << shift)) | val;
1105         change = val != chip->image[reg];
1106         snd_ad1848_out(chip, reg, val);
1107         spin_unlock_irqrestore(&chip->reg_lock, flags);
1108         return change;
1109 }
1110
1111 static int snd_ad1848_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1112 {
1113         int mask = (kcontrol->private_value >> 24) & 0xff;
1114
1115         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1116         uinfo->count = 2;
1117         uinfo->value.integer.min = 0;
1118         uinfo->value.integer.max = mask;
1119         return 0;
1120 }
1121
1122 static int snd_ad1848_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1123 {
1124         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1125         unsigned long flags;
1126         int left_reg = kcontrol->private_value & 0xff;
1127         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1128         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1129         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1130         int mask = (kcontrol->private_value >> 24) & 0xff;
1131         int invert = (kcontrol->private_value >> 22) & 1;
1132
1133         spin_lock_irqsave(&chip->reg_lock, flags);
1134         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1135         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1136         spin_unlock_irqrestore(&chip->reg_lock, flags);
1137         if (invert) {
1138                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1139                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1140         }
1141         return 0;
1142 }
1143
1144 static int snd_ad1848_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1145 {
1146         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1147         unsigned long flags;
1148         int left_reg = kcontrol->private_value & 0xff;
1149         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1150         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1151         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1152         int mask = (kcontrol->private_value >> 24) & 0xff;
1153         int invert = (kcontrol->private_value >> 22) & 1;
1154         int change;
1155         unsigned short val1, val2;
1156
1157         val1 = ucontrol->value.integer.value[0] & mask;
1158         val2 = ucontrol->value.integer.value[1] & mask;
1159         if (invert) {
1160                 val1 = mask - val1;
1161                 val2 = mask - val2;
1162         }
1163         val1 <<= shift_left;
1164         val2 <<= shift_right;
1165         spin_lock_irqsave(&chip->reg_lock, flags);
1166         if (left_reg != right_reg) {
1167                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1168                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1169                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1170                 snd_ad1848_out(chip, left_reg, val1);
1171                 snd_ad1848_out(chip, right_reg, val2);
1172         } else {
1173                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1174                 change = val1 != chip->image[left_reg];
1175                 snd_ad1848_out(chip, left_reg, val1);
1176         }
1177         spin_unlock_irqrestore(&chip->reg_lock, flags);
1178         return change;
1179 }
1180
1181 /*
1182  */
1183 int snd_ad1848_add_ctl(ad1848_t *chip, const char *name, int index, int type, unsigned long value)
1184 {
1185         static snd_kcontrol_new_t newctls[] = {
1186                 [AD1848_MIX_SINGLE] = {
1187                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1188                         .info = snd_ad1848_info_single,
1189                         .get = snd_ad1848_get_single,
1190                         .put = snd_ad1848_put_single,
1191                 },
1192                 [AD1848_MIX_DOUBLE] = {
1193                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1194                         .info = snd_ad1848_info_double,
1195                         .get = snd_ad1848_get_double,
1196                         .put = snd_ad1848_put_double,
1197                 },
1198                 [AD1848_MIX_CAPTURE] = {
1199                         .info = snd_ad1848_info_mux,
1200                         .get = snd_ad1848_get_mux,
1201                         .put = snd_ad1848_put_mux,
1202                 },
1203         };
1204         snd_kcontrol_t *ctl;
1205         int err;
1206
1207         ctl = snd_ctl_new1(&newctls[type], chip);
1208         if (! ctl)
1209                 return -ENOMEM;
1210         strlcpy(ctl->id.name, name, sizeof(ctl->id.name));
1211         ctl->id.index = index;
1212         ctl->private_value = value;
1213         if ((err = snd_ctl_add(chip->card, ctl)) < 0) {
1214                 snd_ctl_free_one(ctl);
1215                 return err;
1216         }
1217         return 0;
1218 }
1219
1220
1221 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1222 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1223 AD1848_DOUBLE("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1),
1224 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1225 AD1848_DOUBLE("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1226 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1227 AD1848_DOUBLE("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1228 AD1848_DOUBLE("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0),
1229 {
1230         .name = "Capture Source",
1231         .type = AD1848_MIX_CAPTURE,
1232 },
1233 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1234 AD1848_SINGLE("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0)
1235 };
1236
1237 int snd_ad1848_mixer(ad1848_t *chip)
1238 {
1239         snd_card_t *card;
1240         snd_pcm_t *pcm;
1241         unsigned int idx;
1242         int err;
1243
1244         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1245
1246         pcm = chip->pcm;
1247         card = chip->card;
1248
1249         strcpy(card->mixername, pcm->name);
1250
1251         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1252                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1253                         return err;
1254
1255         return 0;
1256 }
1257
1258 EXPORT_SYMBOL(snd_ad1848_out);
1259 EXPORT_SYMBOL(snd_ad1848_create);
1260 EXPORT_SYMBOL(snd_ad1848_pcm);
1261 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
1262 EXPORT_SYMBOL(snd_ad1848_mixer);
1263 EXPORT_SYMBOL(snd_ad1848_add_ctl);
1264
1265 /*
1266  *  INIT part
1267  */
1268
1269 static int __init alsa_ad1848_init(void)
1270 {
1271         return 0;
1272 }
1273
1274 static void __exit alsa_ad1848_exit(void)
1275 {
1276 }
1277
1278 module_init(alsa_ad1848_init)
1279 module_exit(alsa_ad1848_exit)