SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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(KERN_WARNING "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(KERN_WARNING "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(KERN_WARNING "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(KERN_WARNING "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(KERN_WARNING "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(KERN_WARNING "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(KERN_ERR "mce_down - auto calibration time out (2)\n");
 244                         return;
 245                 }
 246                 time = schedule_timeout_interruptible(time);
 247                 spin_lock_irqsave(&chip->reg_lock, flags);
 248         }
 249 #if 0
 250         printk("(3) jiffies = %li\n", jiffies);
 251 #endif
 252         time = HZ / 10;
 253         while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
 254                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 255                 if (time <= 0) {
 256                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
 257                         return;
 258                 }
 259                 time = schedule_timeout_interruptible(time);
 260                 spin_lock_irqsave(&chip->reg_lock, flags);
 261         }
 262         spin_unlock_irqrestore(&chip->reg_lock, flags);
 263 #if 0
 264         printk("(4) jiffies = %li\n", jiffies);
 265         snd_printk("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
 266 #endif
 267 }
 268
 269 static unsigned int snd_ad1848_get_count(unsigned char format,
 270                                          unsigned int size)
 271 {
 272         switch (format & 0xe0) {
 273         case AD1848_LINEAR_16:
 274                 size >>= 1;
 275                 break;
 276         }
 277         if (format & AD1848_STEREO)
 278                 size >>= 1;
 279         return size;
 280 }
 281
 282 static int snd_ad1848_trigger(ad1848_t *chip, unsigned char what,
 283                               int channel, int cmd)
 284 {
 285         int result = 0;
 286
 287 #if 0
 288         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
 289 #endif
 290         spin_lock(&chip->reg_lock);
 291         if (cmd == SNDRV_PCM_TRIGGER_START) {
 292                 if (chip->image[AD1848_IFACE_CTRL] & what) {
 293                         spin_unlock(&chip->reg_lock);
 294                         return 0;
 295                 }
 296                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
 297                 chip->mode |= AD1848_MODE_RUNNING;
 298         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 299                 if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
 300                         spin_unlock(&chip->reg_lock);
 301                         return 0;
 302                 }
 303                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
 304                 chip->mode &= ~AD1848_MODE_RUNNING;
 305         } else {
 306                 result = -EINVAL;
 307         }
 308         spin_unlock(&chip->reg_lock);
 309         return result;
 310 }
 311
 312 /*
 313  *  CODEC I/O
 314  */
 315
 316 static unsigned char snd_ad1848_get_rate(unsigned int rate)
 317 {
 318         int i;
 319
 320         for (i = 0; i < 14; i++)
 321                 if (rate == rates[i])
 322                         return freq_bits[i];
 323         snd_BUG();
 324         return freq_bits[13];
 325 }
 326
 327 static int snd_ad1848_ioctl(snd_pcm_substream_t * substream,
 328                             unsigned int cmd, void *arg)
 329 {
 330         return snd_pcm_lib_ioctl(substream, cmd, arg);
 331 }
 332
 333 static unsigned char snd_ad1848_get_format(int format, int channels)
 334 {
 335         unsigned char rformat;
 336
 337         rformat = AD1848_LINEAR_8;
 338         switch (format) {
 339         case SNDRV_PCM_FORMAT_A_LAW:    rformat = AD1848_ALAW_8; break;
 340         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = AD1848_ULAW_8; break;
 341         case SNDRV_PCM_FORMAT_S16_LE:   rformat = AD1848_LINEAR_16; break;
 342         }
 343         if (channels > 1)
 344                 rformat |= AD1848_STEREO;
 345 #if 0
 346         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 347 #endif
 348         return rformat;
 349 }
 350
 351 static void snd_ad1848_calibrate_mute(ad1848_t *chip, int mute)
 352 {
 353         unsigned long flags;
 354
 355         mute = mute ? 1 : 0;
 356         spin_lock_irqsave(&chip->reg_lock, flags);
 357         if (chip->calibrate_mute == mute) {
 358                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 359                 return;
 360         }
 361         if (!mute) {
 362                 snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
 363                 snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
 364         }
 365         snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
 366         snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
 367         snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
 368         snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
 369         snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
 370         snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
 371         chip->calibrate_mute = mute;
 372         spin_unlock_irqrestore(&chip->reg_lock, flags);
 373 }
 374
 375 static void snd_ad1848_set_data_format(ad1848_t *chip, snd_pcm_hw_params_t *hw_params)
 376 {
 377         if (hw_params == NULL) {
 378                 chip->image[AD1848_DATA_FORMAT] = 0x20;
 379         } else {
 380                 chip->image[AD1848_DATA_FORMAT] =
 381                     snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
 382                     snd_ad1848_get_rate(params_rate(hw_params));
 383         }
 384         // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
 385 }
 386
 387 static int snd_ad1848_open(ad1848_t *chip, unsigned int mode)
 388 {
 389         unsigned long flags;
 390
 391         down(&chip->open_mutex);
 392         if (chip->mode & AD1848_MODE_OPEN) {
 393                 up(&chip->open_mutex);
 394                 return -EAGAIN;
 395         }
 396         snd_ad1848_mce_down(chip);
 397
 398 #ifdef SNDRV_DEBUG_MCE
 399         snd_printk("open: (1)\n");
 400 #endif
 401         snd_ad1848_mce_up(chip);
 402         spin_lock_irqsave(&chip->reg_lock, flags);
 403         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 404                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
 405                              AD1848_CALIB_MODE);
 406         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
 407         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 408         spin_unlock_irqrestore(&chip->reg_lock, flags);
 409         snd_ad1848_mce_down(chip);
 410
 411 #ifdef SNDRV_DEBUG_MCE
 412         snd_printk("open: (2)\n");
 413 #endif
 414
 415         snd_ad1848_set_data_format(chip, NULL);
 416
 417         snd_ad1848_mce_up(chip);
 418         spin_lock_irqsave(&chip->reg_lock, flags);
 419         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 420         spin_unlock_irqrestore(&chip->reg_lock, flags);
 421         snd_ad1848_mce_down(chip);
 422
 423 #ifdef SNDRV_DEBUG_MCE
 424         snd_printk("open: (3)\n");
 425 #endif
 426
 427         /* ok. now enable and ack CODEC IRQ */
 428         spin_lock_irqsave(&chip->reg_lock, flags);
 429         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 430         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 431         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
 432         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 433         spin_unlock_irqrestore(&chip->reg_lock, flags);
 434
 435         chip->mode = mode;
 436         up(&chip->open_mutex);
 437
 438         return 0;
 439 }
 440
 441 static void snd_ad1848_close(ad1848_t *chip)
 442 {
 443         unsigned long flags;
 444
 445         down(&chip->open_mutex);
 446         if (!chip->mode) {
 447                 up(&chip->open_mutex);
 448                 return;
 449         }
 450         /* disable IRQ */
 451         spin_lock_irqsave(&chip->reg_lock, flags);
 452         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 453         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 454         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
 455         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 456         spin_unlock_irqrestore(&chip->reg_lock, flags);
 457
 458         /* now disable capture & playback */
 459
 460         snd_ad1848_mce_up(chip);
 461         spin_lock_irqsave(&chip->reg_lock, flags);
 462         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 463                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 464         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 465         spin_unlock_irqrestore(&chip->reg_lock, flags);
 466         snd_ad1848_mce_down(chip);
 467
 468         /* clear IRQ again */
 469         spin_lock_irqsave(&chip->reg_lock, flags);
 470         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 471         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 472         spin_unlock_irqrestore(&chip->reg_lock, flags);
 473
 474         chip->mode = 0;
 475         up(&chip->open_mutex);
 476 }
 477
 478 /*
 479  *  ok.. exported functions..
 480  */
 481
 482 static int snd_ad1848_playback_trigger(snd_pcm_substream_t * substream,
 483                                        int cmd)
 484 {
 485         ad1848_t *chip = snd_pcm_substream_chip(substream);
 486         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
 487 }
 488
 489 static int snd_ad1848_capture_trigger(snd_pcm_substream_t * substream,
 490                                       int cmd)
 491 {
 492         ad1848_t *chip = snd_pcm_substream_chip(substream);
 493         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
 494 }
 495
 496 static int snd_ad1848_playback_hw_params(snd_pcm_substream_t * substream,
 497                                          snd_pcm_hw_params_t * hw_params)
 498 {
 499         ad1848_t *chip = snd_pcm_substream_chip(substream);
 500         unsigned long flags;
 501         int err;
 502
 503         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 504                 return err;
 505         snd_ad1848_calibrate_mute(chip, 1);
 506         snd_ad1848_set_data_format(chip, hw_params);
 507         snd_ad1848_mce_up(chip);
 508         spin_lock_irqsave(&chip->reg_lock, flags);
 509         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 510         spin_unlock_irqrestore(&chip->reg_lock, flags);
 511         snd_ad1848_mce_down(chip);
 512         snd_ad1848_calibrate_mute(chip, 0);
 513         return 0;
 514 }
 515
 516 static int snd_ad1848_playback_hw_free(snd_pcm_substream_t * substream)
 517 {
 518         return snd_pcm_lib_free_pages(substream);
 519 }
 520
 521 static int snd_ad1848_playback_prepare(snd_pcm_substream_t * substream)
 522 {
 523         ad1848_t *chip = snd_pcm_substream_chip(substream);
 524         snd_pcm_runtime_t *runtime = substream->runtime;
 525         unsigned long flags;
 526         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 527         unsigned int count = snd_pcm_lib_period_bytes(substream);
 528
 529         chip->dma_size = size;
 530         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
 531         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 532         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 533         spin_lock_irqsave(&chip->reg_lock, flags);
 534         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 535         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 536         spin_unlock_irqrestore(&chip->reg_lock, flags);
 537         return 0;
 538 }
 539
 540 static int snd_ad1848_capture_hw_params(snd_pcm_substream_t * substream,
 541                                         snd_pcm_hw_params_t * hw_params)
 542 {
 543         ad1848_t *chip = snd_pcm_substream_chip(substream);
 544         unsigned long flags;
 545         int err;
 546
 547         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 548                 return err;
 549         snd_ad1848_calibrate_mute(chip, 1);
 550         snd_ad1848_set_data_format(chip, hw_params);
 551         snd_ad1848_mce_up(chip);
 552         spin_lock_irqsave(&chip->reg_lock, flags);
 553         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 554         spin_unlock_irqrestore(&chip->reg_lock, flags);
 555         snd_ad1848_mce_down(chip);
 556         snd_ad1848_calibrate_mute(chip, 0);
 557         return 0;
 558 }
 559
 560 static int snd_ad1848_capture_hw_free(snd_pcm_substream_t * substream)
 561 {
 562         return snd_pcm_lib_free_pages(substream);
 563 }
 564
 565 static int snd_ad1848_capture_prepare(snd_pcm_substream_t * substream)
 566 {
 567         ad1848_t *chip = snd_pcm_substream_chip(substream);
 568         snd_pcm_runtime_t *runtime = substream->runtime;
 569         unsigned long flags;
 570         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 571         unsigned int count = snd_pcm_lib_period_bytes(substream);
 572
 573         chip->dma_size = size;
 574         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 575         snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 576         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 577         spin_lock_irqsave(&chip->reg_lock, flags);
 578         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 579         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 580         spin_unlock_irqrestore(&chip->reg_lock, flags);
 581         return 0;
 582 }
 583
 584 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 585 {
 586         ad1848_t *chip = dev_id;
 587
 588         if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
 589             (chip->mode & AD1848_MODE_RUNNING))
 590                 snd_pcm_period_elapsed(chip->playback_substream);
 591         if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
 592             (chip->mode & AD1848_MODE_RUNNING))
 593                 snd_pcm_period_elapsed(chip->capture_substream);
 594         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
 595         return IRQ_HANDLED;
 596 }
 597
 598 static snd_pcm_uframes_t snd_ad1848_playback_pointer(snd_pcm_substream_t * substream)
 599 {
 600         ad1848_t *chip = snd_pcm_substream_chip(substream);
 601         size_t ptr;
 602
 603         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
 604                 return 0;
 605         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 606         return bytes_to_frames(substream->runtime, ptr);
 607 }
 608
 609 static snd_pcm_uframes_t snd_ad1848_capture_pointer(snd_pcm_substream_t * substream)
 610 {
 611         ad1848_t *chip = snd_pcm_substream_chip(substream);
 612         size_t ptr;
 613
 614         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
 615                 return 0;
 616         ptr = snd_dma_pointer(chip->dma, chip->dma_size);
 617         return bytes_to_frames(substream->runtime, ptr);
 618 }
 619
 620 /*
 621
 622  */
 623
 624 static void snd_ad1848_thinkpad_twiddle(ad1848_t *chip, int on) {
 625
 626         int tmp;
 627
 628         if (!chip->thinkpad_flag) return;
 629
 630         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
 631         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
 632
 633         if (on)
 634                 /* turn it on */
 635                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
 636         else
 637                 /* turn it off */
 638                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
 639
 640         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
 641
 642 }
 643
 644 #ifdef CONFIG_PM
 645 static int snd_ad1848_suspend(snd_card_t *card, pm_message_t state)
 646 {
 647         ad1848_t *chip = card->pm_private_data;
 648
 649         snd_pcm_suspend_all(chip->pcm);
 650         /* FIXME: save registers? */
 651
 652         if (chip->thinkpad_flag)
 653                 snd_ad1848_thinkpad_twiddle(chip, 0);
 654
 655         return 0;
 656 }
 657
 658 static int snd_ad1848_resume(snd_card_t *card)
 659 {
 660         ad1848_t *chip = card->pm_private_data;
 661
 662         if (chip->thinkpad_flag)
 663                 snd_ad1848_thinkpad_twiddle(chip, 1);
 664
 665         /* FIXME: restore registers? */
 666
 667         return 0;
 668 }
 669 #endif /* CONFIG_PM */
 670
 671 static int snd_ad1848_probe(ad1848_t * chip)
 672 {
 673         unsigned long flags;
 674         int i, id, rev, ad1847;
 675         unsigned char *ptr;
 676
 677 #if 0
 678         snd_ad1848_debug(chip);
 679 #endif
 680         id = ad1847 = 0;
 681         for (i = 0; i < 1000; i++) {
 682                 mb();
 683                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 684                         udelay(500);
 685                 else {
 686                         spin_lock_irqsave(&chip->reg_lock, flags);
 687                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 688                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
 689                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
 690                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
 691                         if (rev == 0x65) {
 692                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 693                                 id = 1;
 694                                 ad1847 = 1;
 695                                 break;
 696                         }
 697                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
 698                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 699                                 id = 1;
 700                                 break;
 701                         }
 702                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 703                 }
 704         }
 705         if (id != 1)
 706                 return -ENODEV; /* no valid device found */
 707         if (chip->hardware == AD1848_HW_DETECT) {
 708                 if (ad1847) {
 709                         chip->hardware = AD1848_HW_AD1847;
 710                 } else {
 711                         chip->hardware = AD1848_HW_AD1848;
 712                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
 713                         if (rev & 0x80) {
 714                                 chip->hardware = AD1848_HW_CS4248;
 715                         } else if ((rev & 0x0f) == 0x0a) {
 716                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
 717                                 for (i = 0; i < 16; ++i) {
 718                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
 719                                                 chip->hardware = AD1848_HW_CMI8330;
 720                                                 break;
 721                                         }
 722                                 }
 723                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 724                         }
 725                 }
 726         }
 727         spin_lock_irqsave(&chip->reg_lock, flags);
 728         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
 729         outb(0, AD1848P(chip, STATUS));
 730         mb();
 731         spin_unlock_irqrestore(&chip->reg_lock, flags);
 732
 733         chip->image[AD1848_MISC_INFO] = 0x00;
 734         chip->image[AD1848_IFACE_CTRL] =
 735             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
 736         ptr = (unsigned char *) &chip->image;
 737         snd_ad1848_mce_down(chip);
 738         spin_lock_irqsave(&chip->reg_lock, flags);
 739         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
 740                 snd_ad1848_out(chip, i, *ptr++);
 741         spin_unlock_irqrestore(&chip->reg_lock, flags);
 742         snd_ad1848_mce_up(chip);
 743         snd_ad1848_mce_down(chip);
 744         return 0;               /* all things are ok.. */
 745 }
 746
 747 /*
 748
 749  */
 750
 751 static snd_pcm_hardware_t snd_ad1848_playback =
 752 {
 753         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 754                                  SNDRV_PCM_INFO_MMAP_VALID),
 755         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 756                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 757         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 758         .rate_min =             5510,
 759         .rate_max =             48000,
 760         .channels_min =         1,
 761         .channels_max =         2,
 762         .buffer_bytes_max =     (128*1024),
 763         .period_bytes_min =     64,
 764         .period_bytes_max =     (128*1024),
 765         .periods_min =          1,
 766         .periods_max =          1024,
 767         .fifo_size =            0,
 768 };
 769
 770 static snd_pcm_hardware_t snd_ad1848_capture =
 771 {
 772         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 773                                  SNDRV_PCM_INFO_MMAP_VALID),
 774         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 775                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 776         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 777         .rate_min =             5510,
 778         .rate_max =             48000,
 779         .channels_min =         1,
 780         .channels_max =         2,
 781         .buffer_bytes_max =     (128*1024),
 782         .period_bytes_min =     64,
 783         .period_bytes_max =     (128*1024),
 784         .periods_min =          1,
 785         .periods_max =          1024,
 786         .fifo_size =            0,
 787 };
 788
 789 /*
 790
 791  */
 792
 793 static int snd_ad1848_playback_open(snd_pcm_substream_t * substream)
 794 {
 795         ad1848_t *chip = snd_pcm_substream_chip(substream);
 796         snd_pcm_runtime_t *runtime = substream->runtime;
 797         int err;
 798
 799         if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
 800                 return err;
 801         chip->playback_substream = substream;
 802         runtime->hw = snd_ad1848_playback;
 803         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 804         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 805         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 806         return 0;
 807 }
 808
 809 static int snd_ad1848_capture_open(snd_pcm_substream_t * substream)
 810 {
 811         ad1848_t *chip = snd_pcm_substream_chip(substream);
 812         snd_pcm_runtime_t *runtime = substream->runtime;
 813         int err;
 814
 815         if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
 816                 return err;
 817         chip->capture_substream = substream;
 818         runtime->hw = snd_ad1848_capture;
 819         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
 820         snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
 821         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 822         return 0;
 823 }
 824
 825 static int snd_ad1848_playback_close(snd_pcm_substream_t * substream)
 826 {
 827         ad1848_t *chip = snd_pcm_substream_chip(substream);
 828
 829         chip->mode &= ~AD1848_MODE_PLAY;
 830         chip->playback_substream = NULL;
 831         snd_ad1848_close(chip);
 832         return 0;
 833 }
 834
 835 static int snd_ad1848_capture_close(snd_pcm_substream_t * substream)
 836 {
 837         ad1848_t *chip = snd_pcm_substream_chip(substream);
 838
 839         chip->mode &= ~AD1848_MODE_CAPTURE;
 840         chip->capture_substream = NULL;
 841         snd_ad1848_close(chip);
 842         return 0;
 843 }
 844
 845 static int snd_ad1848_free(ad1848_t *chip)
 846 {
 847         release_and_free_resource(chip->res_port);
 848         if (chip->irq >= 0)
 849                 free_irq(chip->irq, (void *) chip);
 850         if (chip->dma >= 0) {
 851                 snd_dma_disable(chip->dma);
 852                 free_dma(chip->dma);
 853         }
 854         kfree(chip);
 855         return 0;
 856 }
 857
 858 static int snd_ad1848_dev_free(snd_device_t *device)
 859 {
 860         ad1848_t *chip = device->device_data;
 861         return snd_ad1848_free(chip);
 862 }
 863
 864 static const char *snd_ad1848_chip_id(ad1848_t *chip)
 865 {
 866         switch (chip->hardware) {
 867         case AD1848_HW_AD1847:  return "AD1847";
 868         case AD1848_HW_AD1848:  return "AD1848";
 869         case AD1848_HW_CS4248:  return "CS4248";
 870         case AD1848_HW_CMI8330: return "CMI8330/C3D";
 871         default:                return "???";
 872         }
 873 }
 874
 875 int snd_ad1848_create(snd_card_t * card,
 876                       unsigned long port,
 877                       int irq, int dma,
 878                       unsigned short hardware,
 879                       ad1848_t ** rchip)
 880 {
 881         static snd_device_ops_t ops = {
 882                 .dev_free =     snd_ad1848_dev_free,
 883         };
 884         ad1848_t *chip;
 885         int err;
 886
 887         *rchip = NULL;
 888         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 889         if (chip == NULL)
 890                 return -ENOMEM;
 891         spin_lock_init(&chip->reg_lock);
 892         init_MUTEX(&chip->open_mutex);
 893         chip->card = card;
 894         chip->port = port;
 895         chip->irq = -1;
 896         chip->dma = -1;
 897         chip->hardware = hardware;
 898         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
 899
 900         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
 901                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
 902                 snd_ad1848_free(chip);
 903                 return -EBUSY;
 904         }
 905         if (request_irq(irq, snd_ad1848_interrupt, SA_INTERRUPT, "AD1848", (void *) chip)) {
 906                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
 907                 snd_ad1848_free(chip);
 908                 return -EBUSY;
 909         }
 910         chip->irq = irq;
 911         if (request_dma(dma, "AD1848")) {
 912                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
 913                 snd_ad1848_free(chip);
 914                 return -EBUSY;
 915         }
 916         chip->dma = dma;
 917
 918         if (hardware == AD1848_HW_THINKPAD) {
 919                 chip->thinkpad_flag = 1;
 920                 chip->hardware = AD1848_HW_DETECT; /* reset */
 921                 snd_ad1848_thinkpad_twiddle(chip, 1);
 922                 snd_card_set_isa_pm_callback(card, snd_ad1848_suspend, snd_ad1848_resume, chip);
 923         }
 924
 925         if (snd_ad1848_probe(chip) < 0) {
 926                 snd_ad1848_free(chip);
 927                 return -ENODEV;
 928         }
 929
 930         /* Register device */
 931         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 932                 snd_ad1848_free(chip);
 933                 return err;
 934         }
 935
 936         *rchip = chip;
 937         return 0;
 938 }
 939
 940 static snd_pcm_ops_t snd_ad1848_playback_ops = {
 941         .open =         snd_ad1848_playback_open,
 942         .close =        snd_ad1848_playback_close,
 943         .ioctl =        snd_ad1848_ioctl,
 944         .hw_params =    snd_ad1848_playback_hw_params,
 945         .hw_free =      snd_ad1848_playback_hw_free,
 946         .prepare =      snd_ad1848_playback_prepare,
 947         .trigger =      snd_ad1848_playback_trigger,
 948         .pointer =      snd_ad1848_playback_pointer,
 949 };
 950
 951 static snd_pcm_ops_t snd_ad1848_capture_ops = {
 952         .open =         snd_ad1848_capture_open,
 953         .close =        snd_ad1848_capture_close,
 954         .ioctl =        snd_ad1848_ioctl,
 955         .hw_params =    snd_ad1848_capture_hw_params,
 956         .hw_free =      snd_ad1848_capture_hw_free,
 957         .prepare =      snd_ad1848_capture_prepare,
 958         .trigger =      snd_ad1848_capture_trigger,
 959         .pointer =      snd_ad1848_capture_pointer,
 960 };
 961
 962 int snd_ad1848_pcm(ad1848_t *chip, int device, snd_pcm_t **rpcm)
 963 {
 964         snd_pcm_t *pcm;
 965         int err;
 966
 967         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
 968                 return err;
 969
 970         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
 971         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
 972
 973         pcm->private_data = chip;
 974         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 975         strcpy(pcm->name, snd_ad1848_chip_id(chip));
 976
 977         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 978                                               snd_dma_isa_data(),
 979                                               64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
 980
 981         chip->pcm = pcm;
 982         if (rpcm)
 983                 *rpcm = pcm;
 984         return 0;
 985 }
 986
 987 const snd_pcm_ops_t *snd_ad1848_get_pcm_ops(int direction)
 988 {
 989         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
 990                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
 991 }
 992
 993 /*
 994  *  MIXER part
 995  */
 996
 997 static int snd_ad1848_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
 998 {
 999         static char *texts[4] = {
1000                 "Line", "Aux", "Mic", "Mix"
1001         };
1002
1003         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1004         uinfo->count = 2;
1005         uinfo->value.enumerated.items = 4;
1006         if (uinfo->value.enumerated.item > 3)
1007                 uinfo->value.enumerated.item = 3;
1008         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1009         return 0;
1010 }
1011
1012 static int snd_ad1848_get_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1013 {
1014         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1015         unsigned long flags;
1016
1017         spin_lock_irqsave(&chip->reg_lock, flags);
1018         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1019         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1020         spin_unlock_irqrestore(&chip->reg_lock, flags);
1021         return 0;
1022 }
1023
1024 static int snd_ad1848_put_mux(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1025 {
1026         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1027         unsigned long flags;
1028         unsigned short left, right;
1029         int change;
1030
1031         if (ucontrol->value.enumerated.item[0] > 3 ||
1032             ucontrol->value.enumerated.item[1] > 3)
1033                 return -EINVAL;
1034         left = ucontrol->value.enumerated.item[0] << 6;
1035         right = ucontrol->value.enumerated.item[1] << 6;
1036         spin_lock_irqsave(&chip->reg_lock, flags);
1037         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1038         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1039         change = left != chip->image[AD1848_LEFT_INPUT] ||
1040                  right != chip->image[AD1848_RIGHT_INPUT];
1041         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1042         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1043         spin_unlock_irqrestore(&chip->reg_lock, flags);
1044         return change;
1045 }
1046
1047 static int snd_ad1848_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1048 {
1049         int mask = (kcontrol->private_value >> 16) & 0xff;
1050
1051         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1052         uinfo->count = 1;
1053         uinfo->value.integer.min = 0;
1054         uinfo->value.integer.max = mask;
1055         return 0;
1056 }
1057
1058 static int snd_ad1848_get_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1059 {
1060         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1061         unsigned long flags;
1062         int reg = kcontrol->private_value & 0xff;
1063         int shift = (kcontrol->private_value >> 8) & 0xff;
1064         int mask = (kcontrol->private_value >> 16) & 0xff;
1065         int invert = (kcontrol->private_value >> 24) & 0xff;
1066
1067         spin_lock_irqsave(&chip->reg_lock, flags);
1068         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1069         spin_unlock_irqrestore(&chip->reg_lock, flags);
1070         if (invert)
1071                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1072         return 0;
1073 }
1074
1075 static int snd_ad1848_put_single(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1076 {
1077         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1078         unsigned long flags;
1079         int reg = kcontrol->private_value & 0xff;
1080         int shift = (kcontrol->private_value >> 8) & 0xff;
1081         int mask = (kcontrol->private_value >> 16) & 0xff;
1082         int invert = (kcontrol->private_value >> 24) & 0xff;
1083         int change;
1084         unsigned short val;
1085
1086         val = (ucontrol->value.integer.value[0] & mask);
1087         if (invert)
1088                 val = mask - val;
1089         val <<= shift;
1090         spin_lock_irqsave(&chip->reg_lock, flags);
1091         val = (chip->image[reg] & ~(mask << shift)) | val;
1092         change = val != chip->image[reg];
1093         snd_ad1848_out(chip, reg, val);
1094         spin_unlock_irqrestore(&chip->reg_lock, flags);
1095         return change;
1096 }
1097
1098 static int snd_ad1848_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1099 {
1100         int mask = (kcontrol->private_value >> 24) & 0xff;
1101
1102         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1103         uinfo->count = 2;
1104         uinfo->value.integer.min = 0;
1105         uinfo->value.integer.max = mask;
1106         return 0;
1107 }
1108
1109 static int snd_ad1848_get_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1110 {
1111         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1112         unsigned long flags;
1113         int left_reg = kcontrol->private_value & 0xff;
1114         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1115         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1116         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1117         int mask = (kcontrol->private_value >> 24) & 0xff;
1118         int invert = (kcontrol->private_value >> 22) & 1;
1119
1120         spin_lock_irqsave(&chip->reg_lock, flags);
1121         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1122         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1123         spin_unlock_irqrestore(&chip->reg_lock, flags);
1124         if (invert) {
1125                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1126                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1127         }
1128         return 0;
1129 }
1130
1131 static int snd_ad1848_put_double(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
1132 {
1133         ad1848_t *chip = snd_kcontrol_chip(kcontrol);
1134         unsigned long flags;
1135         int left_reg = kcontrol->private_value & 0xff;
1136         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1137         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1138         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1139         int mask = (kcontrol->private_value >> 24) & 0xff;
1140         int invert = (kcontrol->private_value >> 22) & 1;
1141         int change;
1142         unsigned short val1, val2;
1143
1144         val1 = ucontrol->value.integer.value[0] & mask;
1145         val2 = ucontrol->value.integer.value[1] & mask;
1146         if (invert) {
1147                 val1 = mask - val1;
1148                 val2 = mask - val2;
1149         }
1150         val1 <<= shift_left;
1151         val2 <<= shift_right;
1152         spin_lock_irqsave(&chip->reg_lock, flags);
1153         if (left_reg != right_reg) {
1154                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1155                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1156                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1157                 snd_ad1848_out(chip, left_reg, val1);
1158                 snd_ad1848_out(chip, right_reg, val2);
1159         } else {
1160                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1161                 change = val1 != chip->image[left_reg];
1162                 snd_ad1848_out(chip, left_reg, val1);
1163         }
1164         spin_unlock_irqrestore(&chip->reg_lock, flags);
1165         return change;
1166 }
1167
1168 /*
1169  */
1170 int snd_ad1848_add_ctl(ad1848_t *chip, const char *name, int index, int type, unsigned long value)
1171 {
1172         static snd_kcontrol_new_t newctls[] = {
1173                 [AD1848_MIX_SINGLE] = {
1174                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1175                         .info = snd_ad1848_info_single,
1176                         .get = snd_ad1848_get_single,
1177                         .put = snd_ad1848_put_single,
1178                 },
1179                 [AD1848_MIX_DOUBLE] = {
1180                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1181                         .info = snd_ad1848_info_double,
1182                         .get = snd_ad1848_get_double,
1183                         .put = snd_ad1848_put_double,
1184                 },
1185                 [AD1848_MIX_CAPTURE] = {
1186                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1187                         .info = snd_ad1848_info_mux,
1188                         .get = snd_ad1848_get_mux,
1189                         .put = snd_ad1848_put_mux,
1190                 },
1191         };
1192         snd_kcontrol_t *ctl;
1193         int err;
1194
1195         ctl = snd_ctl_new1(&newctls[type], chip);
1196         if (! ctl)
1197                 return -ENOMEM;
1198         strlcpy(ctl->id.name, name, sizeof(ctl->id.name));
1199         ctl->id.index = index;
1200         ctl->private_value = value;
1201         if ((err = snd_ctl_add(chip->card, ctl)) < 0) {
1202                 snd_ctl_free_one(ctl);
1203                 return err;
1204         }
1205         return 0;
1206 }
1207
1208
1209 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1210 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1211 AD1848_DOUBLE("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1),
1212 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1213 AD1848_DOUBLE("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1214 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1215 AD1848_DOUBLE("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1216 AD1848_DOUBLE("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0),
1217 {
1218         .name = "Capture Source",
1219         .type = AD1848_MIX_CAPTURE,
1220 },
1221 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1222 AD1848_SINGLE("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0)
1223 };
1224
1225 int snd_ad1848_mixer(ad1848_t *chip)
1226 {
1227         snd_card_t *card;
1228         snd_pcm_t *pcm;
1229         unsigned int idx;
1230         int err;
1231
1232         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1233
1234         pcm = chip->pcm;
1235         card = chip->card;
1236
1237         strcpy(card->mixername, pcm->name);
1238
1239         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1240                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1241                         return err;
1242
1243         return 0;
1244 }
1245
1246 EXPORT_SYMBOL(snd_ad1848_out);
1247 EXPORT_SYMBOL(snd_ad1848_create);
1248 EXPORT_SYMBOL(snd_ad1848_pcm);
1249 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
1250 EXPORT_SYMBOL(snd_ad1848_mixer);
1251 EXPORT_SYMBOL(snd_ad1848_add_ctl);
1252
1253 /*
1254  *  INIT part
1255  */
1256
1257 static int __init alsa_ad1848_init(void)
1258 {
1259         return 0;
1260 }
1261
1262 static void __exit alsa_ad1848_exit(void)
1263 {
1264 }
1265
1266 module_init(alsa_ad1848_init)
1267 module_exit(alsa_ad1848_exit)