sound/isa/ad1848/ad1848_lib.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/delay.h>
  24 #include <linux/init.h>
  25 #include <linux/interrupt.h>
  26 #include <linux/slab.h>
  27 #include <linux/ioport.h>
  28 #include <sound/core.h>
  29 #include <sound/ad1848.h>
  30 #include <sound/control.h>
  31 #include <sound/tlv.h>
  32 #include <sound/pcm_params.h>
  33
  34 #include <asm/io.h>
  35 #include <asm/dma.h>
  36
  37 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  38 MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
  39 MODULE_LICENSE("GPL");
  40
  41 #if 0
  42 #define SNDRV_DEBUG_MCE
  43 #endif
  44
  45 /*
  46  *  Some variables
  47  */
  48
  49 static unsigned char freq_bits[14] = {
  50         /* 5510 */      0x00 | AD1848_XTAL2,
  51         /* 6620 */      0x0E | AD1848_XTAL2,
  52         /* 8000 */      0x00 | AD1848_XTAL1,
  53         /* 9600 */      0x0E | AD1848_XTAL1,
  54         /* 11025 */     0x02 | AD1848_XTAL2,
  55         /* 16000 */     0x02 | AD1848_XTAL1,
  56         /* 18900 */     0x04 | AD1848_XTAL2,
  57         /* 22050 */     0x06 | AD1848_XTAL2,
  58         /* 27042 */     0x04 | AD1848_XTAL1,
  59         /* 32000 */     0x06 | AD1848_XTAL1,
  60         /* 33075 */     0x0C | AD1848_XTAL2,
  61         /* 37800 */     0x08 | AD1848_XTAL2,
  62         /* 44100 */     0x0A | AD1848_XTAL2,
  63         /* 48000 */     0x0C | AD1848_XTAL1
  64 };
  65
  66 static unsigned int rates[14] = {
  67         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
  68         27042, 32000, 33075, 37800, 44100, 48000
  69 };
  70
  71 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
  72         .count = ARRAY_SIZE(rates),
  73         .list = rates,
  74         .mask = 0,
  75 };
  76
  77 static unsigned char snd_ad1848_original_image[16] =
  78 {
  79         0x00,                   /* 00 - lic */
  80         0x00,                   /* 01 - ric */
  81         0x9f,                   /* 02 - la1ic */
  82         0x9f,                   /* 03 - ra1ic */
  83         0x9f,                   /* 04 - la2ic */
  84         0x9f,                   /* 05 - ra2ic */
  85         0xbf,                   /* 06 - loc */
  86         0xbf,                   /* 07 - roc */
  87         0x20,                   /* 08 - dfr */
  88         AD1848_AUTOCALIB,       /* 09 - ic */
  89         0x00,                   /* 0a - pc */
  90         0x00,                   /* 0b - ti */
  91         0x00,                   /* 0c - mi */
  92         0x00,                   /* 0d - lbc */
  93         0x00,                   /* 0e - dru */
  94         0x00,                   /* 0f - drl */
  95 };
  96
  97 /*
  98  *  Basic I/O functions
  99  */
 100
 101 static void snd_ad1848_wait(struct snd_wss *chip)
 102 {
 103         int timeout;
 104
 105         for (timeout = 250; timeout > 0; timeout--) {
 106                 if ((inb(AD1848P(chip, REGSEL)) & AD1848_INIT) == 0)
 107                         break;
 108                 udelay(100);
 109         }
 110 }
 111
 112 void snd_ad1848_out(struct snd_wss *chip,
 113                            unsigned char reg,
 114                            unsigned char value)
 115 {
 116         snd_ad1848_wait(chip);
 117 #ifdef CONFIG_SND_DEBUG
 118         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 119                 snd_printk(KERN_WARNING "auto calibration time out - "
 120                            "reg = 0x%x, value = 0x%x\n", reg, value);
 121 #endif
 122         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 123         outb(chip->image[reg] = value, AD1848P(chip, REG));
 124         mb();
 125         snd_printdd("codec out - reg 0x%x = 0x%x\n",
 126                         chip->mce_bit | reg, value);
 127 }
 128
 129 EXPORT_SYMBOL(snd_ad1848_out);
 130
 131 static void snd_ad1848_dout(struct snd_wss *chip,
 132                             unsigned char reg, unsigned char value)
 133 {
 134         snd_ad1848_wait(chip);
 135         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 136         outb(value, AD1848P(chip, REG));
 137         mb();
 138 }
 139
 140 static unsigned char snd_ad1848_in(struct snd_wss *chip, unsigned char reg)
 141 {
 142         snd_ad1848_wait(chip);
 143 #ifdef CONFIG_SND_DEBUG
 144         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 145                 snd_printk(KERN_WARNING "auto calibration time out - "
 146                            "reg = 0x%x\n", reg);
 147 #endif
 148         outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
 149         mb();
 150         return inb(AD1848P(chip, REG));
 151 }
 152
 153 #if 0
 154
 155 static void snd_ad1848_debug(struct snd_wss *chip)
 156 {
 157         printk("AD1848 REGS:      INDEX = 0x%02x  ", inb(AD1848P(chip, REGSEL)));
 158         printk("                 STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
 159         printk("  0x00: left input      = 0x%02x  ", snd_ad1848_in(chip, 0x00));
 160         printk("  0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
 161         printk("  0x01: right input     = 0x%02x  ", snd_ad1848_in(chip, 0x01));
 162         printk("  0x09: iface (CFIG 1)  = 0x%02x\n", snd_ad1848_in(chip, 0x09));
 163         printk("  0x02: AUXA left       = 0x%02x  ", snd_ad1848_in(chip, 0x02));
 164         printk("  0x0a: pin control     = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
 165         printk("  0x03: AUXA right      = 0x%02x  ", snd_ad1848_in(chip, 0x03));
 166         printk("  0x0b: init & status   = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
 167         printk("  0x04: AUXB left       = 0x%02x  ", snd_ad1848_in(chip, 0x04));
 168         printk("  0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
 169         printk("  0x05: AUXB right      = 0x%02x  ", snd_ad1848_in(chip, 0x05));
 170         printk("  0x0d: loopback        = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
 171         printk("  0x06: left output     = 0x%02x  ", snd_ad1848_in(chip, 0x06));
 172         printk("  0x0e: data upr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
 173         printk("  0x07: right output    = 0x%02x  ", snd_ad1848_in(chip, 0x07));
 174         printk("  0x0f: data lwr count  = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
 175 }
 176
 177 #endif
 178
 179 /*
 180  *  AD1848 detection / MCE routines
 181  */
 182
 183 static void snd_ad1848_mce_up(struct snd_wss *chip)
 184 {
 185         unsigned long flags;
 186         int timeout;
 187
 188         snd_ad1848_wait(chip);
 189 #ifdef CONFIG_SND_DEBUG
 190         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 191                 snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
 192 #endif
 193         spin_lock_irqsave(&chip->reg_lock, flags);
 194         chip->mce_bit |= AD1848_MCE;
 195         timeout = inb(AD1848P(chip, REGSEL));
 196         if (timeout == 0x80)
 197                 snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
 198         if (!(timeout & AD1848_MCE))
 199                 outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
 200         spin_unlock_irqrestore(&chip->reg_lock, flags);
 201 }
 202
 203 static void snd_ad1848_mce_down(struct snd_wss *chip)
 204 {
 205         unsigned long flags, timeout;
 206         int reg;
 207
 208         spin_lock_irqsave(&chip->reg_lock, flags);
 209         for (timeout = 5; timeout > 0; timeout--)
 210                 inb(AD1848P(chip, REGSEL));
 211         /* end of cleanup sequence */
 212         for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
 213                 udelay(100);
 214
 215         snd_printdd("(1) timeout = %ld\n", timeout);
 216
 217 #ifdef CONFIG_SND_DEBUG
 218         if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 219                 snd_printk(KERN_WARNING "mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
 220 #endif
 221
 222         chip->mce_bit &= ~AD1848_MCE;
 223         reg = inb(AD1848P(chip, REGSEL));
 224         outb(chip->mce_bit | (reg & 0x1f), AD1848P(chip, REGSEL));
 225         if (reg == 0x80)
 226                 snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
 227         if ((reg & AD1848_MCE) == 0) {
 228                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 229                 return;
 230         }
 231
 232         /*
 233          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 234          * It may take up to 5 sample periods (at most 907 us @ 5.5125 kHz) for
 235          * the process to _start_, so it is important to wait at least that long
 236          * before checking.  Otherwise we might think AC has finished when it
 237          * has in fact not begun.  It could take 128 (no AC) or 384 (AC) cycles
 238          * for ACI to drop.  This gives a wait of at most 70 ms with a more
 239          * typical value of 3-9 ms.
 240          */
 241         timeout = jiffies + msecs_to_jiffies(250);
 242         do {
 243                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 244                 msleep(1);
 245                 spin_lock_irqsave(&chip->reg_lock, flags);
 246                 reg = snd_ad1848_in(chip, AD1848_TEST_INIT) &
 247                       AD1848_CALIB_IN_PROGRESS;
 248         } while (reg && time_before(jiffies, timeout));
 249         spin_unlock_irqrestore(&chip->reg_lock, flags);
 250         if (reg)
 251                 snd_printk(KERN_ERR
 252                            "mce_down - auto calibration time out (2)\n");
 253
 254         snd_printdd("(4) jiffies = %lu\n", jiffies);
 255         snd_printd("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
 256 }
 257
 258 static unsigned int snd_ad1848_get_count(unsigned char format,
 259                                          unsigned int size)
 260 {
 261         switch (format & 0xe0) {
 262         case AD1848_LINEAR_16:
 263                 size >>= 1;
 264                 break;
 265         }
 266         if (format & AD1848_STEREO)
 267                 size >>= 1;
 268         return size;
 269 }
 270
 271 static int snd_ad1848_trigger(struct snd_wss *chip, unsigned char what,
 272                               int channel, int cmd)
 273 {
 274         int result = 0;
 275
 276 #if 0
 277         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
 278 #endif
 279         spin_lock(&chip->reg_lock);
 280         if (cmd == SNDRV_PCM_TRIGGER_START) {
 281                 if (chip->image[AD1848_IFACE_CTRL] & what) {
 282                         spin_unlock(&chip->reg_lock);
 283                         return 0;
 284                 }
 285                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
 286         } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 287                 if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
 288                         spin_unlock(&chip->reg_lock);
 289                         return 0;
 290                 }
 291                 snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
 292         } else {
 293                 result = -EINVAL;
 294         }
 295         spin_unlock(&chip->reg_lock);
 296         return result;
 297 }
 298
 299 /*
 300  *  CODEC I/O
 301  */
 302
 303 static unsigned char snd_ad1848_get_rate(unsigned int rate)
 304 {
 305         int i;
 306
 307         for (i = 0; i < ARRAY_SIZE(rates); i++)
 308                 if (rate == rates[i])
 309                         return freq_bits[i];
 310         snd_BUG();
 311         return freq_bits[ARRAY_SIZE(rates) - 1];
 312 }
 313
 314 static int snd_ad1848_ioctl(struct snd_pcm_substream *substream,
 315                             unsigned int cmd, void *arg)
 316 {
 317         return snd_pcm_lib_ioctl(substream, cmd, arg);
 318 }
 319
 320 static unsigned char snd_ad1848_get_format(int format, int channels)
 321 {
 322         unsigned char rformat;
 323
 324         rformat = AD1848_LINEAR_8;
 325         switch (format) {
 326         case SNDRV_PCM_FORMAT_A_LAW:    rformat = AD1848_ALAW_8; break;
 327         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = AD1848_ULAW_8; break;
 328         case SNDRV_PCM_FORMAT_S16_LE:   rformat = AD1848_LINEAR_16; break;
 329         }
 330         if (channels > 1)
 331                 rformat |= AD1848_STEREO;
 332 #if 0
 333         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 334 #endif
 335         return rformat;
 336 }
 337
 338 static void snd_ad1848_calibrate_mute(struct snd_wss *chip, int mute)
 339 {
 340         unsigned long flags;
 341
 342         mute = mute ? 1 : 0;
 343         spin_lock_irqsave(&chip->reg_lock, flags);
 344         if (chip->calibrate_mute == mute) {
 345                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 346                 return;
 347         }
 348         if (!mute) {
 349                 snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
 350                 snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
 351         }
 352         snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
 353         snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
 354         snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
 355         snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
 356         snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
 357         snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
 358         chip->calibrate_mute = mute;
 359         spin_unlock_irqrestore(&chip->reg_lock, flags);
 360 }
 361
 362 static void snd_ad1848_set_data_format(struct snd_wss *chip,
 363                                        struct snd_pcm_hw_params *hw_params)
 364 {
 365         if (hw_params == NULL) {
 366                 chip->image[AD1848_DATA_FORMAT] = 0x20;
 367         } else {
 368                 chip->image[AD1848_DATA_FORMAT] =
 369                     snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
 370                     snd_ad1848_get_rate(params_rate(hw_params));
 371         }
 372         // snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
 373 }
 374
 375 static int snd_ad1848_open(struct snd_wss *chip, unsigned int mode)
 376 {
 377         unsigned long flags;
 378
 379         if (chip->mode & WSS_MODE_OPEN)
 380                 return -EAGAIN;
 381
 382         snd_ad1848_mce_down(chip);
 383
 384 #ifdef SNDRV_DEBUG_MCE
 385         snd_printk("open: (1)\n");
 386 #endif
 387         snd_ad1848_mce_up(chip);
 388         spin_lock_irqsave(&chip->reg_lock, flags);
 389         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 390                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
 391                              AD1848_CALIB_MODE);
 392         chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
 393         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 394         spin_unlock_irqrestore(&chip->reg_lock, flags);
 395         snd_ad1848_mce_down(chip);
 396
 397 #ifdef SNDRV_DEBUG_MCE
 398         snd_printk("open: (2)\n");
 399 #endif
 400
 401         snd_ad1848_set_data_format(chip, NULL);
 402
 403         snd_ad1848_mce_up(chip);
 404         spin_lock_irqsave(&chip->reg_lock, flags);
 405         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 406         spin_unlock_irqrestore(&chip->reg_lock, flags);
 407         snd_ad1848_mce_down(chip);
 408
 409 #ifdef SNDRV_DEBUG_MCE
 410         snd_printk("open: (3)\n");
 411 #endif
 412
 413         /* ok. now enable and ack CODEC IRQ */
 414         spin_lock_irqsave(&chip->reg_lock, flags);
 415         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 416         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 417         chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
 418         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 419         spin_unlock_irqrestore(&chip->reg_lock, flags);
 420
 421         chip->mode = mode;
 422
 423         return 0;
 424 }
 425
 426 static void snd_ad1848_close(struct snd_wss *chip)
 427 {
 428         unsigned long flags;
 429
 430         if (!chip->mode)
 431                 return;
 432         /* disable IRQ */
 433         spin_lock_irqsave(&chip->reg_lock, flags);
 434         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 435         outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
 436         chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
 437         snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
 438         spin_unlock_irqrestore(&chip->reg_lock, flags);
 439
 440         /* now disable capture & playback */
 441
 442         snd_ad1848_mce_up(chip);
 443         spin_lock_irqsave(&chip->reg_lock, flags);
 444         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
 445                              AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 446         snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
 447         spin_unlock_irqrestore(&chip->reg_lock, flags);
 448         snd_ad1848_mce_down(chip);
 449
 450         /* clear IRQ again */
 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         spin_unlock_irqrestore(&chip->reg_lock, flags);
 455
 456         chip->mode = 0;
 457 }
 458
 459 /*
 460  *  ok.. exported functions..
 461  */
 462
 463 static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
 464                                        int cmd)
 465 {
 466         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 467         return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
 468 }
 469
 470 static int snd_ad1848_capture_trigger(struct snd_pcm_substream *substream,
 471                                       int cmd)
 472 {
 473         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 474         return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
 475 }
 476
 477 static int snd_ad1848_playback_hw_params(struct snd_pcm_substream *substream,
 478                                          struct snd_pcm_hw_params *hw_params)
 479 {
 480         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 481         unsigned long flags;
 482         int err;
 483
 484         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 485                 return err;
 486         snd_ad1848_calibrate_mute(chip, 1);
 487         snd_ad1848_set_data_format(chip, hw_params);
 488         snd_ad1848_mce_up(chip);
 489         spin_lock_irqsave(&chip->reg_lock, flags);
 490         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 491         spin_unlock_irqrestore(&chip->reg_lock, flags);
 492         snd_ad1848_mce_down(chip);
 493         snd_ad1848_calibrate_mute(chip, 0);
 494         return 0;
 495 }
 496
 497 static int snd_ad1848_playback_hw_free(struct snd_pcm_substream *substream)
 498 {
 499         return snd_pcm_lib_free_pages(substream);
 500 }
 501
 502 static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
 503 {
 504         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 505         struct snd_pcm_runtime *runtime = substream->runtime;
 506         unsigned long flags;
 507         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 508         unsigned int count = snd_pcm_lib_period_bytes(substream);
 509
 510         chip->p_dma_size = size;
 511         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
 512         snd_dma_program(chip->dma1, runtime->dma_addr, size,
 513                         DMA_MODE_WRITE | DMA_AUTOINIT);
 514         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 515         spin_lock_irqsave(&chip->reg_lock, flags);
 516         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 517         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 518         spin_unlock_irqrestore(&chip->reg_lock, flags);
 519         return 0;
 520 }
 521
 522 static int snd_ad1848_capture_hw_params(struct snd_pcm_substream *substream,
 523                                         struct snd_pcm_hw_params *hw_params)
 524 {
 525         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 526         unsigned long flags;
 527         int err;
 528
 529         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 530                 return err;
 531         snd_ad1848_calibrate_mute(chip, 1);
 532         snd_ad1848_set_data_format(chip, hw_params);
 533         snd_ad1848_mce_up(chip);
 534         spin_lock_irqsave(&chip->reg_lock, flags);
 535         snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
 536         spin_unlock_irqrestore(&chip->reg_lock, flags);
 537         snd_ad1848_mce_down(chip);
 538         snd_ad1848_calibrate_mute(chip, 0);
 539         return 0;
 540 }
 541
 542 static int snd_ad1848_capture_hw_free(struct snd_pcm_substream *substream)
 543 {
 544         return snd_pcm_lib_free_pages(substream);
 545 }
 546
 547 static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
 548 {
 549         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 550         struct snd_pcm_runtime *runtime = substream->runtime;
 551         unsigned long flags;
 552         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 553         unsigned int count = snd_pcm_lib_period_bytes(substream);
 554
 555         chip->c_dma_size = size;
 556         chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
 557         snd_dma_program(chip->dma2, runtime->dma_addr, size,
 558                         DMA_MODE_READ | DMA_AUTOINIT);
 559         count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
 560         spin_lock_irqsave(&chip->reg_lock, flags);
 561         snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
 562         snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
 563         spin_unlock_irqrestore(&chip->reg_lock, flags);
 564         return 0;
 565 }
 566
 567 static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id)
 568 {
 569         struct snd_wss *chip = dev_id;
 570
 571         if ((chip->mode & WSS_MODE_PLAY) && chip->playback_substream)
 572                 snd_pcm_period_elapsed(chip->playback_substream);
 573         if ((chip->mode & WSS_MODE_RECORD) && chip->capture_substream)
 574                 snd_pcm_period_elapsed(chip->capture_substream);
 575         outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
 576         return IRQ_HANDLED;
 577 }
 578
 579 static snd_pcm_uframes_t snd_ad1848_playback_pointer(struct snd_pcm_substream *substream)
 580 {
 581         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 582         size_t ptr;
 583
 584         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
 585                 return 0;
 586         ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
 587         return bytes_to_frames(substream->runtime, ptr);
 588 }
 589
 590 static snd_pcm_uframes_t snd_ad1848_capture_pointer(struct snd_pcm_substream *substream)
 591 {
 592         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 593         size_t ptr;
 594
 595         if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
 596                 return 0;
 597         ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
 598         return bytes_to_frames(substream->runtime, ptr);
 599 }
 600
 601 /*
 602
 603  */
 604
 605 static void snd_ad1848_thinkpad_twiddle(struct snd_wss *chip, int on)
 606 {
 607         int tmp;
 608
 609         if (!chip->thinkpad_flag) return;
 610
 611         outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
 612         tmp = inb(AD1848_THINKPAD_CTL_PORT2);
 613
 614         if (on)
 615                 /* turn it on */
 616                 tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
 617         else
 618                 /* turn it off */
 619                 tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
 620
 621         outb(tmp, AD1848_THINKPAD_CTL_PORT2);
 622
 623 }
 624
 625 #ifdef CONFIG_PM
 626 static void snd_ad1848_suspend(struct snd_wss *chip)
 627 {
 628         snd_pcm_suspend_all(chip->pcm);
 629         if (chip->thinkpad_flag)
 630                 snd_ad1848_thinkpad_twiddle(chip, 0);
 631 }
 632
 633 static void snd_ad1848_resume(struct snd_wss *chip)
 634 {
 635         int i;
 636
 637         if (chip->thinkpad_flag)
 638                 snd_ad1848_thinkpad_twiddle(chip, 1);
 639
 640         /* clear any pendings IRQ */
 641         inb(AD1848P(chip, STATUS));
 642         outb(0, AD1848P(chip, STATUS));
 643         mb();
 644
 645         snd_ad1848_mce_down(chip);
 646         for (i = 0; i < 16; i++)
 647                 snd_ad1848_out(chip, i, chip->image[i]);
 648         snd_ad1848_mce_up(chip);
 649         snd_ad1848_mce_down(chip);
 650 }
 651 #endif /* CONFIG_PM */
 652
 653 static int snd_ad1848_probe(struct snd_wss *chip)
 654 {
 655         unsigned long flags;
 656         int i, id, rev, ad1847;
 657         unsigned char *ptr;
 658
 659 #if 0
 660         snd_ad1848_debug(chip);
 661 #endif
 662         id = ad1847 = 0;
 663         for (i = 0; i < 1000; i++) {
 664                 mb();
 665                 if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
 666                         udelay(500);
 667                 else {
 668                         spin_lock_irqsave(&chip->reg_lock, flags);
 669                         snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 670                         snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
 671                         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
 672                         rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
 673                         if (rev == 0x65) {
 674                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 675                                 id = 1;
 676                                 ad1847 = 1;
 677                                 break;
 678                         }
 679                         if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
 680                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 681                                 id = 1;
 682                                 break;
 683                         }
 684                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 685                 }
 686         }
 687         if (id != 1)
 688                 return -ENODEV; /* no valid device found */
 689         if (chip->hardware == WSS_HW_DETECT) {
 690                 if (ad1847) {
 691                         chip->hardware = WSS_HW_AD1847;
 692                 } else {
 693                         chip->hardware = WSS_HW_AD1848;
 694                         rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
 695                         if (rev & 0x80) {
 696                                 chip->hardware = WSS_HW_CS4248;
 697                         } else if ((rev & 0x0f) == 0x0a) {
 698                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
 699                                 for (i = 0; i < 16; ++i) {
 700                                         if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
 701                                                 chip->hardware = WSS_HW_CMI8330;
 702                                                 break;
 703                                         }
 704                                 }
 705                                 snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
 706                         }
 707                 }
 708         }
 709         spin_lock_irqsave(&chip->reg_lock, flags);
 710         inb(AD1848P(chip, STATUS));     /* clear any pendings IRQ */
 711         outb(0, AD1848P(chip, STATUS));
 712         mb();
 713         spin_unlock_irqrestore(&chip->reg_lock, flags);
 714
 715         chip->image[AD1848_MISC_INFO] = 0x00;
 716         chip->image[AD1848_IFACE_CTRL] =
 717             (chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
 718         ptr = (unsigned char *) &chip->image;
 719         snd_ad1848_mce_down(chip);
 720         spin_lock_irqsave(&chip->reg_lock, flags);
 721         for (i = 0; i < 16; i++)        /* ok.. fill all AD1848 registers */
 722                 snd_ad1848_out(chip, i, *ptr++);
 723         spin_unlock_irqrestore(&chip->reg_lock, flags);
 724         snd_ad1848_mce_up(chip);
 725         snd_ad1848_mce_down(chip);
 726         return 0;               /* all things are ok.. */
 727 }
 728
 729 /*
 730
 731  */
 732
 733 static struct snd_pcm_hardware snd_ad1848_playback =
 734 {
 735         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 736                                  SNDRV_PCM_INFO_MMAP_VALID),
 737         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 738                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 739         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 740         .rate_min =             5510,
 741         .rate_max =             48000,
 742         .channels_min =         1,
 743         .channels_max =         2,
 744         .buffer_bytes_max =     (128*1024),
 745         .period_bytes_min =     64,
 746         .period_bytes_max =     (128*1024),
 747         .periods_min =          1,
 748         .periods_max =          1024,
 749         .fifo_size =            0,
 750 };
 751
 752 static struct snd_pcm_hardware snd_ad1848_capture =
 753 {
 754         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 755                                  SNDRV_PCM_INFO_MMAP_VALID),
 756         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
 757                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
 758         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
 759         .rate_min =             5510,
 760         .rate_max =             48000,
 761         .channels_min =         1,
 762         .channels_max =         2,
 763         .buffer_bytes_max =     (128*1024),
 764         .period_bytes_min =     64,
 765         .period_bytes_max =     (128*1024),
 766         .periods_min =          1,
 767         .periods_max =          1024,
 768         .fifo_size =            0,
 769 };
 770
 771 /*
 772
 773  */
 774
 775 static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
 776 {
 777         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 778         struct snd_pcm_runtime *runtime = substream->runtime;
 779         int err;
 780
 781         err = snd_ad1848_open(chip, WSS_MODE_PLAY);
 782         if (err < 0)
 783                 return err;
 784         chip->playback_substream = substream;
 785         runtime->hw = snd_ad1848_playback;
 786         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
 787         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
 788         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 789         return 0;
 790 }
 791
 792 static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
 793 {
 794         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 795         struct snd_pcm_runtime *runtime = substream->runtime;
 796         int err;
 797
 798         err = snd_ad1848_open(chip, WSS_MODE_RECORD);
 799         if (err < 0)
 800                 return err;
 801         chip->capture_substream = substream;
 802         runtime->hw = snd_ad1848_capture;
 803         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
 804         snd_pcm_limit_isa_dma_size(chip->dma2, &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_playback_close(struct snd_pcm_substream *substream)
 810 {
 811         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 812
 813         chip->mode &= ~WSS_MODE_PLAY;
 814         chip->playback_substream = NULL;
 815         snd_ad1848_close(chip);
 816         return 0;
 817 }
 818
 819 static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
 820 {
 821         struct snd_wss *chip = snd_pcm_substream_chip(substream);
 822
 823         chip->mode &= ~WSS_MODE_RECORD;
 824         chip->capture_substream = NULL;
 825         snd_ad1848_close(chip);
 826         return 0;
 827 }
 828
 829 static int snd_ad1848_free(struct snd_wss *chip)
 830 {
 831         release_and_free_resource(chip->res_port);
 832         if (chip->irq >= 0)
 833                 free_irq(chip->irq, (void *) chip);
 834         if (chip->dma1 >= 0) {
 835                 snd_dma_disable(chip->dma1);
 836                 free_dma(chip->dma1);
 837         }
 838         kfree(chip);
 839         return 0;
 840 }
 841
 842 static int snd_ad1848_dev_free(struct snd_device *device)
 843 {
 844         struct snd_wss *chip = device->device_data;
 845         return snd_ad1848_free(chip);
 846 }
 847
 848 static const char *snd_ad1848_chip_id(struct snd_wss *chip)
 849 {
 850         switch (chip->hardware) {
 851         case AD1848_HW_AD1847:  return "AD1847";
 852         case AD1848_HW_AD1848:  return "AD1848";
 853         case AD1848_HW_CS4248:  return "CS4248";
 854         case AD1848_HW_CMI8330: return "CMI8330/C3D";
 855         default:                return "???";
 856         }
 857 }
 858
 859 int snd_ad1848_create(struct snd_card *card,
 860                       unsigned long port,
 861                       int irq, int dma,
 862                       unsigned short hardware,
 863                       struct snd_wss **rchip)
 864 {
 865         static struct snd_device_ops ops = {
 866                 .dev_free =     snd_ad1848_dev_free,
 867         };
 868         struct snd_wss *chip;
 869         int err;
 870
 871         *rchip = NULL;
 872         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 873         if (chip == NULL)
 874                 return -ENOMEM;
 875         spin_lock_init(&chip->reg_lock);
 876         chip->card = card;
 877         chip->port = port;
 878         chip->irq = -1;
 879         chip->dma1 = -1;
 880         chip->dma2 = -1;
 881         chip->single_dma = 1;
 882         chip->hardware = hardware;
 883         memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
 884
 885         if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
 886                 snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
 887                 snd_ad1848_free(chip);
 888                 return -EBUSY;
 889         }
 890         if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
 891                 snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
 892                 snd_ad1848_free(chip);
 893                 return -EBUSY;
 894         }
 895         chip->irq = irq;
 896         if (request_dma(dma, "AD1848")) {
 897                 snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
 898                 snd_ad1848_free(chip);
 899                 return -EBUSY;
 900         }
 901         chip->dma1 = dma;
 902         chip->dma2 = dma;
 903
 904         if (hardware == WSS_HW_THINKPAD) {
 905                 chip->thinkpad_flag = 1;
 906                 chip->hardware = WSS_HW_DETECT; /* reset */
 907                 snd_ad1848_thinkpad_twiddle(chip, 1);
 908         }
 909
 910         if (snd_ad1848_probe(chip) < 0) {
 911                 snd_ad1848_free(chip);
 912                 return -ENODEV;
 913         }
 914
 915         /* Register device */
 916         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 917                 snd_ad1848_free(chip);
 918                 return err;
 919         }
 920
 921 #ifdef CONFIG_PM
 922         chip->suspend = snd_ad1848_suspend;
 923         chip->resume = snd_ad1848_resume;
 924 #endif
 925
 926         *rchip = chip;
 927         return 0;
 928 }
 929
 930 EXPORT_SYMBOL(snd_ad1848_create);
 931
 932 static struct snd_pcm_ops snd_ad1848_playback_ops = {
 933         .open =         snd_ad1848_playback_open,
 934         .close =        snd_ad1848_playback_close,
 935         .ioctl =        snd_ad1848_ioctl,
 936         .hw_params =    snd_ad1848_playback_hw_params,
 937         .hw_free =      snd_ad1848_playback_hw_free,
 938         .prepare =      snd_ad1848_playback_prepare,
 939         .trigger =      snd_ad1848_playback_trigger,
 940         .pointer =      snd_ad1848_playback_pointer,
 941 };
 942
 943 static struct snd_pcm_ops snd_ad1848_capture_ops = {
 944         .open =         snd_ad1848_capture_open,
 945         .close =        snd_ad1848_capture_close,
 946         .ioctl =        snd_ad1848_ioctl,
 947         .hw_params =    snd_ad1848_capture_hw_params,
 948         .hw_free =      snd_ad1848_capture_hw_free,
 949         .prepare =      snd_ad1848_capture_prepare,
 950         .trigger =      snd_ad1848_capture_trigger,
 951         .pointer =      snd_ad1848_capture_pointer,
 952 };
 953
 954 int snd_ad1848_pcm(struct snd_wss *chip, int device, struct snd_pcm **rpcm)
 955 {
 956         struct snd_pcm *pcm;
 957         int err;
 958
 959         if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
 960                 return err;
 961
 962         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
 963         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
 964
 965         pcm->private_data = chip;
 966         pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
 967         strcpy(pcm->name, snd_ad1848_chip_id(chip));
 968
 969         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 970                                               snd_dma_isa_data(),
 971                                               64 * 1024,
 972                                               chip->dma1 > 3 ?
 973                                                         128 * 1024 : 64 * 1024);
 974
 975         chip->pcm = pcm;
 976         if (rpcm)
 977                 *rpcm = pcm;
 978         return 0;
 979 }
 980
 981 EXPORT_SYMBOL(snd_ad1848_pcm);
 982
 983 const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
 984 {
 985         return direction == SNDRV_PCM_STREAM_PLAYBACK ?
 986                 &snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
 987 }
 988
 989 EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
 990
 991 /*
 992  *  MIXER part
 993  */
 994
 995 static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 996 {
 997         static char *texts[4] = {
 998                 "Line", "Aux", "Mic", "Mix"
 999         };
1000
1001         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1002         uinfo->count = 2;
1003         uinfo->value.enumerated.items = 4;
1004         if (uinfo->value.enumerated.item > 3)
1005                 uinfo->value.enumerated.item = 3;
1006         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1007         return 0;
1008 }
1009
1010 static int snd_ad1848_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1011 {
1012         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1013         unsigned long flags;
1014
1015         spin_lock_irqsave(&chip->reg_lock, flags);
1016         ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
1017         ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
1018         spin_unlock_irqrestore(&chip->reg_lock, flags);
1019         return 0;
1020 }
1021
1022 static int snd_ad1848_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1023 {
1024         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1025         unsigned long flags;
1026         unsigned short left, right;
1027         int change;
1028
1029         if (ucontrol->value.enumerated.item[0] > 3 ||
1030             ucontrol->value.enumerated.item[1] > 3)
1031                 return -EINVAL;
1032         left = ucontrol->value.enumerated.item[0] << 6;
1033         right = ucontrol->value.enumerated.item[1] << 6;
1034         spin_lock_irqsave(&chip->reg_lock, flags);
1035         left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
1036         right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
1037         change = left != chip->image[AD1848_LEFT_INPUT] ||
1038                  right != chip->image[AD1848_RIGHT_INPUT];
1039         snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
1040         snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
1041         spin_unlock_irqrestore(&chip->reg_lock, flags);
1042         return change;
1043 }
1044
1045 static int snd_ad1848_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1046 {
1047         int mask = (kcontrol->private_value >> 16) & 0xff;
1048
1049         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1050         uinfo->count = 1;
1051         uinfo->value.integer.min = 0;
1052         uinfo->value.integer.max = mask;
1053         return 0;
1054 }
1055
1056 static int snd_ad1848_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1057 {
1058         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1059         unsigned long flags;
1060         int reg = kcontrol->private_value & 0xff;
1061         int shift = (kcontrol->private_value >> 8) & 0xff;
1062         int mask = (kcontrol->private_value >> 16) & 0xff;
1063         int invert = (kcontrol->private_value >> 24) & 0xff;
1064
1065         spin_lock_irqsave(&chip->reg_lock, flags);
1066         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1067         spin_unlock_irqrestore(&chip->reg_lock, flags);
1068         if (invert)
1069                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1070         return 0;
1071 }
1072
1073 static int snd_ad1848_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1074 {
1075         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1076         unsigned long flags;
1077         int reg = kcontrol->private_value & 0xff;
1078         int shift = (kcontrol->private_value >> 8) & 0xff;
1079         int mask = (kcontrol->private_value >> 16) & 0xff;
1080         int invert = (kcontrol->private_value >> 24) & 0xff;
1081         int change;
1082         unsigned short val;
1083
1084         val = (ucontrol->value.integer.value[0] & mask);
1085         if (invert)
1086                 val = mask - val;
1087         val <<= shift;
1088         spin_lock_irqsave(&chip->reg_lock, flags);
1089         val = (chip->image[reg] & ~(mask << shift)) | val;
1090         change = val != chip->image[reg];
1091         snd_ad1848_out(chip, reg, val);
1092         spin_unlock_irqrestore(&chip->reg_lock, flags);
1093         return change;
1094 }
1095
1096 static int snd_ad1848_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1097 {
1098         int mask = (kcontrol->private_value >> 24) & 0xff;
1099
1100         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1101         uinfo->count = 2;
1102         uinfo->value.integer.min = 0;
1103         uinfo->value.integer.max = mask;
1104         return 0;
1105 }
1106
1107 static int snd_ad1848_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1108 {
1109         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1110         unsigned long flags;
1111         int left_reg = kcontrol->private_value & 0xff;
1112         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1113         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1114         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1115         int mask = (kcontrol->private_value >> 24) & 0xff;
1116         int invert = (kcontrol->private_value >> 22) & 1;
1117
1118         spin_lock_irqsave(&chip->reg_lock, flags);
1119         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1120         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1121         spin_unlock_irqrestore(&chip->reg_lock, flags);
1122         if (invert) {
1123                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1124                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1125         }
1126         return 0;
1127 }
1128
1129 static int snd_ad1848_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1130 {
1131         struct snd_wss *chip = snd_kcontrol_chip(kcontrol);
1132         unsigned long flags;
1133         int left_reg = kcontrol->private_value & 0xff;
1134         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1135         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1136         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1137         int mask = (kcontrol->private_value >> 24) & 0xff;
1138         int invert = (kcontrol->private_value >> 22) & 1;
1139         int change;
1140         unsigned short val1, val2;
1141
1142         val1 = ucontrol->value.integer.value[0] & mask;
1143         val2 = ucontrol->value.integer.value[1] & mask;
1144         if (invert) {
1145                 val1 = mask - val1;
1146                 val2 = mask - val2;
1147         }
1148         val1 <<= shift_left;
1149         val2 <<= shift_right;
1150         spin_lock_irqsave(&chip->reg_lock, flags);
1151         if (left_reg != right_reg) {
1152                 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1153                 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1154                 change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1155                 snd_ad1848_out(chip, left_reg, val1);
1156                 snd_ad1848_out(chip, right_reg, val2);
1157         } else {
1158                 val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
1159                 change = val1 != chip->image[left_reg];
1160                 snd_ad1848_out(chip, left_reg, val1);
1161         }
1162         spin_unlock_irqrestore(&chip->reg_lock, flags);
1163         return change;
1164 }
1165
1166 /*
1167  */
1168 int snd_ad1848_add_ctl_elem(struct snd_wss *chip,
1169                             const struct ad1848_mix_elem *c)
1170 {
1171         static struct snd_kcontrol_new newctls[] = {
1172                 [AD1848_MIX_SINGLE] = {
1173                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1174                         .info = snd_ad1848_info_single,
1175                         .get = snd_ad1848_get_single,
1176                         .put = snd_ad1848_put_single,
1177                 },
1178                 [AD1848_MIX_DOUBLE] = {
1179                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1180                         .info = snd_ad1848_info_double,
1181                         .get = snd_ad1848_get_double,
1182                         .put = snd_ad1848_put_double,
1183                 },
1184                 [AD1848_MIX_CAPTURE] = {
1185                         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1186                         .info = snd_ad1848_info_mux,
1187                         .get = snd_ad1848_get_mux,
1188                         .put = snd_ad1848_put_mux,
1189                 },
1190         };
1191         struct snd_kcontrol *ctl;
1192         int err;
1193
1194         ctl = snd_ctl_new1(&newctls[c->type], chip);
1195         if (! ctl)
1196                 return -ENOMEM;
1197         strlcpy(ctl->id.name, c->name, sizeof(ctl->id.name));
1198         ctl->id.index = c->index;
1199         ctl->private_value = c->private_value;
1200         if (c->tlv) {
1201                 ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1202                 ctl->tlv.p = c->tlv;
1203         }
1204         if ((err = snd_ctl_add(chip->card, ctl)) < 0)
1205                 return err;
1206         return 0;
1207 }
1208
1209 EXPORT_SYMBOL(snd_ad1848_add_ctl_elem);
1210
1211 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
1212 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
1213 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
1214
1215 #define AD1848_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv) \
1216 { .name = xname, \
1217   .index = xindex, \
1218   .type = AD1848_MIX_SINGLE, \
1219   .private_value = AD1848_MIXVAL_SINGLE(reg, shift, mask, invert), \
1220   .tlv = xtlv }
1221
1222 #define AD1848_DOUBLE_TLV(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert, xtlv) \
1223 { .name = xname, \
1224   .index = xindex, \
1225   .type = AD1848_MIX_DOUBLE, \
1226   .private_value = AD1848_MIXVAL_DOUBLE(left_reg, right_reg, shift_left, shift_right, mask, invert), \
1227   .tlv = xtlv }
1228
1229 static struct ad1848_mix_elem snd_ad1848_controls[] = {
1230 AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
1231 AD1848_DOUBLE_TLV("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1,
1232                   db_scale_6bit),
1233 AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1234 AD1848_DOUBLE_TLV("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
1235                   db_scale_5bit_12db_max),
1236 AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1237 AD1848_DOUBLE_TLV("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
1238                   db_scale_5bit_12db_max),
1239 AD1848_DOUBLE_TLV("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0,
1240                   db_scale_rec_gain),
1241 {
1242         .name = "Capture Source",
1243         .type = AD1848_MIX_CAPTURE,
1244 },
1245 AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
1246 AD1848_SINGLE_TLV("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0,
1247                   db_scale_6bit),
1248 };
1249
1250 int snd_ad1848_mixer(struct snd_wss *chip)
1251 {
1252         struct snd_card *card;
1253         struct snd_pcm *pcm;
1254         unsigned int idx;
1255         int err;
1256
1257         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1258
1259         pcm = chip->pcm;
1260         card = chip->card;
1261
1262         strcpy(card->mixername, pcm->name);
1263
1264         for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
1265                 if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
1266                         return err;
1267
1268         return 0;
1269 }
1270
1271 EXPORT_SYMBOL(snd_ad1848_mixer);
1272
1273 /*
1274  *  INIT part
1275  */
1276
1277 static int __init alsa_ad1848_init(void)
1278 {
1279         return 0;
1280 }
1281
1282 static void __exit alsa_ad1848_exit(void)
1283 {
1284 }
1285
1286 module_init(alsa_ad1848_init)
1287 module_exit(alsa_ad1848_exit)