sound/isa/cs423x/cs4231_lib.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   3  *  Routines for control of CS4231(A)/CS4232/InterWave & compatible chips
   4  *
   5  *  Bugs:
   6  *     - sometimes record brokes playback with WSS portion of
   7  *       Yamaha OPL3-SA3 chip
   8  *     - CS4231 (GUS MAX) - still trouble with occasional noises
   9  *                        - broken initialization?
  10  *
  11  *   This program is free software; you can redistribute it and/or modify
  12  *   it under the terms of the GNU General Public License as published by
  13  *   the Free Software Foundation; either version 2 of the License, or
  14  *   (at your option) any later version.
  15  *
  16  *   This program is distributed in the hope that it will be useful,
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *   GNU General Public License for more details.
  20  *
  21  *   You should have received a copy of the GNU General Public License
  22  *   along with this program; if not, write to the Free Software
  23  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  24  *
  25  */
  26
  27 #include <sound/driver.h>
  28 #include <linux/delay.h>
  29 #include <linux/pm.h>
  30 #include <linux/init.h>
  31 #include <linux/interrupt.h>
  32 #include <linux/slab.h>
  33 #include <linux/ioport.h>
  34 #include <sound/core.h>
  35 #include <sound/cs4231.h>
  36 #include <sound/pcm_params.h>
  37
  38 #include <asm/io.h>
  39 #include <asm/dma.h>
  40 #include <asm/irq.h>
  41
  42 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  43 MODULE_DESCRIPTION("Routines for control of CS4231(A)/CS4232/InterWave & compatible chips");
  44 MODULE_LICENSE("GPL");
  45
  46 #if 0
  47 #define SNDRV_DEBUG_MCE
  48 #endif
  49
  50 /*
  51  *  Some variables
  52  */
  53
  54 static unsigned char freq_bits[14] = {
  55         /* 5510 */      0x00 | CS4231_XTAL2,
  56         /* 6620 */      0x0E | CS4231_XTAL2,
  57         /* 8000 */      0x00 | CS4231_XTAL1,
  58         /* 9600 */      0x0E | CS4231_XTAL1,
  59         /* 11025 */     0x02 | CS4231_XTAL2,
  60         /* 16000 */     0x02 | CS4231_XTAL1,
  61         /* 18900 */     0x04 | CS4231_XTAL2,
  62         /* 22050 */     0x06 | CS4231_XTAL2,
  63         /* 27042 */     0x04 | CS4231_XTAL1,
  64         /* 32000 */     0x06 | CS4231_XTAL1,
  65         /* 33075 */     0x0C | CS4231_XTAL2,
  66         /* 37800 */     0x08 | CS4231_XTAL2,
  67         /* 44100 */     0x0A | CS4231_XTAL2,
  68         /* 48000 */     0x0C | CS4231_XTAL1
  69 };
  70
  71 static unsigned int rates[14] = {
  72         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
  73         27042, 32000, 33075, 37800, 44100, 48000
  74 };
  75
  76 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
  77         .count = 14,
  78         .list = rates,
  79         .mask = 0,
  80 };
  81
  82 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
  83 {
  84         return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
  85 }
  86
  87 static unsigned char snd_cs4231_original_image[32] =
  88 {
  89         0x00,                   /* 00/00 - lic */
  90         0x00,                   /* 01/01 - ric */
  91         0x9f,                   /* 02/02 - la1ic */
  92         0x9f,                   /* 03/03 - ra1ic */
  93         0x9f,                   /* 04/04 - la2ic */
  94         0x9f,                   /* 05/05 - ra2ic */
  95         0xbf,                   /* 06/06 - loc */
  96         0xbf,                   /* 07/07 - roc */
  97         0x20,                   /* 08/08 - pdfr */
  98         CS4231_AUTOCALIB,       /* 09/09 - ic */
  99         0x00,                   /* 0a/10 - pc */
 100         0x00,                   /* 0b/11 - ti */
 101         CS4231_MODE2,           /* 0c/12 - mi */
 102         0xfc,                   /* 0d/13 - lbc */
 103         0x00,                   /* 0e/14 - pbru */
 104         0x00,                   /* 0f/15 - pbrl */
 105         0x80,                   /* 10/16 - afei */
 106         0x01,                   /* 11/17 - afeii */
 107         0x9f,                   /* 12/18 - llic */
 108         0x9f,                   /* 13/19 - rlic */
 109         0x00,                   /* 14/20 - tlb */
 110         0x00,                   /* 15/21 - thb */
 111         0x00,                   /* 16/22 - la3mic/reserved */
 112         0x00,                   /* 17/23 - ra3mic/reserved */
 113         0x00,                   /* 18/24 - afs */
 114         0x00,                   /* 19/25 - lamoc/version */
 115         0xcf,                   /* 1a/26 - mioc */
 116         0x00,                   /* 1b/27 - ramoc/reserved */
 117         0x20,                   /* 1c/28 - cdfr */
 118         0x00,                   /* 1d/29 - res4 */
 119         0x00,                   /* 1e/30 - cbru */
 120         0x00,                   /* 1f/31 - cbrl */
 121 };
 122
 123 /*
 124  *  Basic I/O functions
 125  */
 126
 127 static inline void cs4231_outb(struct snd_cs4231 *chip, u8 offset, u8 val)
 128 {
 129         outb(val, chip->port + offset);
 130 }
 131
 132 static inline u8 cs4231_inb(struct snd_cs4231 *chip, u8 offset)
 133 {
 134         return inb(chip->port + offset);
 135 }
 136
 137 static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
 138                             unsigned char mask, unsigned char value)
 139 {
 140         int timeout;
 141         unsigned char tmp;
 142
 143         for (timeout = 250;
 144              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 145              timeout--)
 146                 udelay(100);
 147 #ifdef CONFIG_SND_DEBUG
 148         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 149                 snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 150 #endif
 151         if (chip->calibrate_mute) {
 152                 chip->image[reg] &= mask;
 153                 chip->image[reg] |= value;
 154         } else {
 155                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 156                 mb();
 157                 tmp = (chip->image[reg] & mask) | value;
 158                 cs4231_outb(chip, CS4231P(REG), tmp);
 159                 chip->image[reg] = tmp;
 160                 mb();
 161         }
 162 }
 163
 164 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
 165 {
 166         int timeout;
 167
 168         for (timeout = 250;
 169              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 170              timeout--)
 171                 udelay(10);
 172         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 173         cs4231_outb(chip, CS4231P(REG), value);
 174         mb();
 175 }
 176
 177 void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
 178 {
 179         int timeout;
 180
 181         for (timeout = 250;
 182              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 183              timeout--)
 184                 udelay(100);
 185 #ifdef CONFIG_SND_DEBUG
 186         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 187                 snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 188 #endif
 189         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 190         cs4231_outb(chip, CS4231P(REG), value);
 191         chip->image[reg] = value;
 192         mb();
 193 #if 0
 194         printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
 195 #endif
 196 }
 197
 198 unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
 199 {
 200         int timeout;
 201
 202         for (timeout = 250;
 203              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 204              timeout--)
 205                 udelay(100);
 206 #ifdef CONFIG_SND_DEBUG
 207         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 208                 snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
 209 #endif
 210         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 211         mb();
 212         return cs4231_inb(chip, CS4231P(REG));
 213 }
 214
 215 void snd_cs4236_ext_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char val)
 216 {
 217         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
 218         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
 219         cs4231_outb(chip, CS4231P(REG), val);
 220         chip->eimage[CS4236_REG(reg)] = val;
 221 #if 0
 222         printk("ext out : reg = 0x%x, val = 0x%x\n", reg, val);
 223 #endif
 224 }
 225
 226 unsigned char snd_cs4236_ext_in(struct snd_cs4231 *chip, unsigned char reg)
 227 {
 228         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
 229         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
 230 #if 1
 231         return cs4231_inb(chip, CS4231P(REG));
 232 #else
 233         {
 234                 unsigned char res;
 235                 res = cs4231_inb(chip, CS4231P(REG));
 236                 printk("ext in : reg = 0x%x, val = 0x%x\n", reg, res);
 237                 return res;
 238         }
 239 #endif
 240 }
 241
 242 #if 0
 243
 244 static void snd_cs4231_debug(struct snd_cs4231 *chip)
 245 {
 246         printk("CS4231 REGS:      INDEX = 0x%02x  ", cs4231_inb(chip, CS4231P(REGSEL)));
 247         printk("                 STATUS = 0x%02x\n", cs4231_inb(chip, CS4231P(STATUS)));
 248         printk("  0x00: left input      = 0x%02x  ", snd_cs4231_in(chip, 0x00));
 249         printk("  0x10: alt 1 (CFIG 2)  = 0x%02x\n", snd_cs4231_in(chip, 0x10));
 250         printk("  0x01: right input     = 0x%02x  ", snd_cs4231_in(chip, 0x01));
 251         printk("  0x11: alt 2 (CFIG 3)  = 0x%02x\n", snd_cs4231_in(chip, 0x11));
 252         printk("  0x02: GF1 left input  = 0x%02x  ", snd_cs4231_in(chip, 0x02));
 253         printk("  0x12: left line in    = 0x%02x\n", snd_cs4231_in(chip, 0x12));
 254         printk("  0x03: GF1 right input = 0x%02x  ", snd_cs4231_in(chip, 0x03));
 255         printk("  0x13: right line in   = 0x%02x\n", snd_cs4231_in(chip, 0x13));
 256         printk("  0x04: CD left input   = 0x%02x  ", snd_cs4231_in(chip, 0x04));
 257         printk("  0x14: timer low       = 0x%02x\n", snd_cs4231_in(chip, 0x14));
 258         printk("  0x05: CD right input  = 0x%02x  ", snd_cs4231_in(chip, 0x05));
 259         printk("  0x15: timer high      = 0x%02x\n", snd_cs4231_in(chip, 0x15));
 260         printk("  0x06: left output     = 0x%02x  ", snd_cs4231_in(chip, 0x06));
 261         printk("  0x16: left MIC (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x16));
 262         printk("  0x07: right output    = 0x%02x  ", snd_cs4231_in(chip, 0x07));
 263         printk("  0x17: right MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x17));
 264         printk("  0x08: playback format = 0x%02x  ", snd_cs4231_in(chip, 0x08));
 265         printk("  0x18: IRQ status      = 0x%02x\n", snd_cs4231_in(chip, 0x18));
 266         printk("  0x09: iface (CFIG 1)  = 0x%02x  ", snd_cs4231_in(chip, 0x09));
 267         printk("  0x19: left line out   = 0x%02x\n", snd_cs4231_in(chip, 0x19));
 268         printk("  0x0a: pin control     = 0x%02x  ", snd_cs4231_in(chip, 0x0a));
 269         printk("  0x1a: mono control    = 0x%02x\n", snd_cs4231_in(chip, 0x1a));
 270         printk("  0x0b: init & status   = 0x%02x  ", snd_cs4231_in(chip, 0x0b));
 271         printk("  0x1b: right line out  = 0x%02x\n", snd_cs4231_in(chip, 0x1b));
 272         printk("  0x0c: revision & mode = 0x%02x  ", snd_cs4231_in(chip, 0x0c));
 273         printk("  0x1c: record format   = 0x%02x\n", snd_cs4231_in(chip, 0x1c));
 274         printk("  0x0d: loopback        = 0x%02x  ", snd_cs4231_in(chip, 0x0d));
 275         printk("  0x1d: var freq (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x1d));
 276         printk("  0x0e: ply upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0e));
 277         printk("  0x1e: ply lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1e));
 278         printk("  0x0f: rec upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0f));
 279         printk("  0x1f: rec lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1f));
 280 }
 281
 282 #endif
 283
 284 /*
 285  *  CS4231 detection / MCE routines
 286  */
 287
 288 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 289 {
 290         int timeout;
 291
 292         /* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
 293         for (timeout = 5; timeout > 0; timeout--)
 294                 cs4231_inb(chip, CS4231P(REGSEL));
 295         /* end of cleanup sequence */
 296         for (timeout = 250;
 297              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 298              timeout--)
 299                 udelay(10);
 300 }
 301
 302 void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 303 {
 304         unsigned long flags;
 305         int timeout;
 306
 307         for (timeout = 250; timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT); timeout--)
 308                 udelay(100);
 309 #ifdef CONFIG_SND_DEBUG
 310         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 311                 snd_printk("mce_up - auto calibration time out (0)\n");
 312 #endif
 313         spin_lock_irqsave(&chip->reg_lock, flags);
 314         chip->mce_bit |= CS4231_MCE;
 315         timeout = cs4231_inb(chip, CS4231P(REGSEL));
 316         if (timeout == 0x80)
 317                 snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
 318         if (!(timeout & CS4231_MCE))
 319                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
 320         spin_unlock_irqrestore(&chip->reg_lock, flags);
 321 }
 322
 323 void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 324 {
 325         unsigned long flags;
 326         int timeout;
 327
 328         snd_cs4231_busy_wait(chip);
 329 #if 0
 330         printk("(1) timeout = %i\n", timeout);
 331 #endif
 332 #ifdef CONFIG_SND_DEBUG
 333         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 334                 snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", (long)CS4231P(REGSEL));
 335 #endif
 336         spin_lock_irqsave(&chip->reg_lock, flags);
 337         chip->mce_bit &= ~CS4231_MCE;
 338         timeout = cs4231_inb(chip, CS4231P(REGSEL));
 339         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
 340         spin_unlock_irqrestore(&chip->reg_lock, flags);
 341         if (timeout == 0x80)
 342                 snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
 343         if ((timeout & CS4231_MCE) == 0 ||
 344             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
 345                 return;
 346         }
 347         snd_cs4231_busy_wait(chip);
 348
 349         /* calibration process */
 350
 351         for (timeout = 500; timeout > 0 && (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0; timeout--)
 352                 udelay(10);
 353         if ((snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0) {
 354                 snd_printd("cs4231_mce_down - auto calibration time out (1)\n");
 355                 return;
 356         }
 357 #if 0
 358         printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
 359 #endif
 360         /* in 10 ms increments, check condition, up to 250 ms */
 361         timeout = 25;
 362         while (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) {
 363                 if (--timeout < 0) {
 364                         snd_printk("mce_down - auto calibration time out (2)\n");
 365                         return;
 366                 }
 367                 msleep(10);
 368         }
 369 #if 0
 370         printk("(3) jiffies = %li\n", jiffies);
 371 #endif
 372         /* in 10 ms increments, check condition, up to 100 ms */
 373         timeout = 10;
 374         while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
 375                 if (--timeout < 0) {
 376                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
 377                         return;
 378                 }
 379                 msleep(10);
 380         }
 381 #if 0
 382         printk("(4) jiffies = %li\n", jiffies);
 383         snd_printk("mce_down - exit = 0x%x\n", cs4231_inb(chip, CS4231P(REGSEL)));
 384 #endif
 385 }
 386
 387 static unsigned int snd_cs4231_get_count(unsigned char format, unsigned int size)
 388 {
 389         switch (format & 0xe0) {
 390         case CS4231_LINEAR_16:
 391         case CS4231_LINEAR_16_BIG:
 392                 size >>= 1;
 393                 break;
 394         case CS4231_ADPCM_16:
 395                 return size >> 2;
 396         }
 397         if (format & CS4231_STEREO)
 398                 size >>= 1;
 399         return size;
 400 }
 401
 402 static int snd_cs4231_trigger(struct snd_pcm_substream *substream,
 403                               int cmd)
 404 {
 405         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 406         int result = 0;
 407         unsigned int what;
 408         struct snd_pcm_substream *s;
 409         int do_start;
 410
 411 #if 0
 412         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, cs4231_inb(chip, CS4231P(STATUS)));
 413 #endif
 414
 415         switch (cmd) {
 416         case SNDRV_PCM_TRIGGER_START:
 417         case SNDRV_PCM_TRIGGER_RESUME:
 418                 do_start = 1; break;
 419         case SNDRV_PCM_TRIGGER_STOP:
 420         case SNDRV_PCM_TRIGGER_SUSPEND:
 421                 do_start = 0; break;
 422         default:
 423                 return -EINVAL;
 424         }
 425
 426         what = 0;
 427         snd_pcm_group_for_each_entry(s, substream) {
 428                 if (s == chip->playback_substream) {
 429                         what |= CS4231_PLAYBACK_ENABLE;
 430                         snd_pcm_trigger_done(s, substream);
 431                 } else if (s == chip->capture_substream) {
 432                         what |= CS4231_RECORD_ENABLE;
 433                         snd_pcm_trigger_done(s, substream);
 434                 }
 435         }
 436         spin_lock(&chip->reg_lock);
 437         if (do_start) {
 438                 chip->image[CS4231_IFACE_CTRL] |= what;
 439                 if (chip->trigger)
 440                         chip->trigger(chip, what, 1);
 441         } else {
 442                 chip->image[CS4231_IFACE_CTRL] &= ~what;
 443                 if (chip->trigger)
 444                         chip->trigger(chip, what, 0);
 445         }
 446         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 447         spin_unlock(&chip->reg_lock);
 448 #if 0
 449         snd_cs4231_debug(chip);
 450 #endif
 451         return result;
 452 }
 453
 454 /*
 455  *  CODEC I/O
 456  */
 457
 458 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 459 {
 460         int i;
 461
 462         for (i = 0; i < 14; i++)
 463                 if (rate == rates[i])
 464                         return freq_bits[i];
 465         // snd_BUG();
 466         return freq_bits[13];
 467 }
 468
 469 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip,
 470                                            int format,
 471                                            int channels)
 472 {
 473         unsigned char rformat;
 474
 475         rformat = CS4231_LINEAR_8;
 476         switch (format) {
 477         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = CS4231_ULAW_8; break;
 478         case SNDRV_PCM_FORMAT_A_LAW:    rformat = CS4231_ALAW_8; break;
 479         case SNDRV_PCM_FORMAT_S16_LE:   rformat = CS4231_LINEAR_16; break;
 480         case SNDRV_PCM_FORMAT_S16_BE:   rformat = CS4231_LINEAR_16_BIG; break;
 481         case SNDRV_PCM_FORMAT_IMA_ADPCM:        rformat = CS4231_ADPCM_16; break;
 482         }
 483         if (channels > 1)
 484                 rformat |= CS4231_STEREO;
 485 #if 0
 486         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 487 #endif
 488         return rformat;
 489 }
 490
 491 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 492 {
 493         unsigned long flags;
 494
 495         mute = mute ? 1 : 0;
 496         spin_lock_irqsave(&chip->reg_lock, flags);
 497         if (chip->calibrate_mute == mute) {
 498                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 499                 return;
 500         }
 501         if (!mute) {
 502                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT, chip->image[CS4231_LEFT_INPUT]);
 503                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT, chip->image[CS4231_RIGHT_INPUT]);
 504                 snd_cs4231_dout(chip, CS4231_LOOPBACK, chip->image[CS4231_LOOPBACK]);
 505         }
 506         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 507         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 508         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 509         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 510         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 511         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 512         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN, mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 513         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN, mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 514         snd_cs4231_dout(chip, CS4231_MONO_CTRL, mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 515         if (chip->hardware == CS4231_HW_INTERWAVE) {
 516                 snd_cs4231_dout(chip, CS4231_LEFT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_LEFT_MIC_INPUT]);
 517                 snd_cs4231_dout(chip, CS4231_RIGHT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_MIC_INPUT]);
 518                 snd_cs4231_dout(chip, CS4231_LINE_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_LEFT_OUTPUT]);
 519                 snd_cs4231_dout(chip, CS4231_LINE_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_RIGHT_OUTPUT]);
 520         }
 521         chip->calibrate_mute = mute;
 522         spin_unlock_irqrestore(&chip->reg_lock, flags);
 523 }
 524
 525 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 526                                        struct snd_pcm_hw_params *params,
 527                                        unsigned char pdfr)
 528 {
 529         unsigned long flags;
 530         int full_calib = 1;
 531
 532         mutex_lock(&chip->mce_mutex);
 533         snd_cs4231_calibrate_mute(chip, 1);
 534         if (chip->hardware == CS4231_HW_CS4231A ||
 535             (chip->hardware & CS4231_HW_CS4232_MASK)) {
 536                 spin_lock_irqsave(&chip->reg_lock, flags);
 537                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) {      /* rate is same? */
 538                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x10);
 539                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
 540                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
 541                         udelay(100); /* Fixes audible clicks at least on GUS MAX */
 542                         full_calib = 0;
 543                 }
 544                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 545         }
 546         if (full_calib) {
 547                 snd_cs4231_mce_up(chip);
 548                 spin_lock_irqsave(&chip->reg_lock, flags);
 549                 if (chip->hardware != CS4231_HW_INTERWAVE && !chip->single_dma) {
 550                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 551                                         (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 552                                         (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 553                                         pdfr);
 554                 } else {
 555                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
 556                 }
 557                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 558                 snd_cs4231_mce_down(chip);
 559         }
 560         snd_cs4231_calibrate_mute(chip, 0);
 561         mutex_unlock(&chip->mce_mutex);
 562 }
 563
 564 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 565                                       struct snd_pcm_hw_params *params,
 566                                       unsigned char cdfr)
 567 {
 568         unsigned long flags;
 569         int full_calib = 1;
 570
 571         mutex_lock(&chip->mce_mutex);
 572         snd_cs4231_calibrate_mute(chip, 1);
 573         if (chip->hardware == CS4231_HW_CS4231A ||
 574             (chip->hardware & CS4231_HW_CS4232_MASK)) {
 575                 spin_lock_irqsave(&chip->reg_lock, flags);
 576                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) ||      /* rate is same? */
 577                     (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 578                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x20);
 579                         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT] = cdfr);
 580                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
 581                         full_calib = 0;
 582                 }
 583                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 584         }
 585         if (full_calib) {
 586                 snd_cs4231_mce_up(chip);
 587                 spin_lock_irqsave(&chip->reg_lock, flags);
 588                 if (chip->hardware != CS4231_HW_INTERWAVE) {
 589                         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 590                                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 591                                                ((chip->single_dma ? cdfr : chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 592                                                (cdfr & 0x0f));
 593                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 594                                 snd_cs4231_mce_down(chip);
 595                                 snd_cs4231_mce_up(chip);
 596                                 spin_lock_irqsave(&chip->reg_lock, flags);
 597                         }
 598                 }
 599                 snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 600                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 601                 snd_cs4231_mce_down(chip);
 602         }
 603         snd_cs4231_calibrate_mute(chip, 0);
 604         mutex_unlock(&chip->mce_mutex);
 605 }
 606
 607 /*
 608  *  Timer interface
 609  */
 610
 611 static unsigned long snd_cs4231_timer_resolution(struct snd_timer * timer)
 612 {
 613         struct snd_cs4231 *chip = snd_timer_chip(timer);
 614         if (chip->hardware & CS4231_HW_CS4236B_MASK)
 615                 return 14467;
 616         else
 617                 return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 618 }
 619
 620 static int snd_cs4231_timer_start(struct snd_timer * timer)
 621 {
 622         unsigned long flags;
 623         unsigned int ticks;
 624         struct snd_cs4231 *chip = snd_timer_chip(timer);
 625         spin_lock_irqsave(&chip->reg_lock, flags);
 626         ticks = timer->sticks;
 627         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 628             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 629             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 630                 snd_cs4231_out(chip, CS4231_TIMER_HIGH, chip->image[CS4231_TIMER_HIGH] = (unsigned char) (ticks >> 8));
 631                 snd_cs4231_out(chip, CS4231_TIMER_LOW, chip->image[CS4231_TIMER_LOW] = (unsigned char) ticks);
 632                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
 633         }
 634         spin_unlock_irqrestore(&chip->reg_lock, flags);
 635         return 0;
 636 }
 637
 638 static int snd_cs4231_timer_stop(struct snd_timer * timer)
 639 {
 640         unsigned long flags;
 641         struct snd_cs4231 *chip = snd_timer_chip(timer);
 642         spin_lock_irqsave(&chip->reg_lock, flags);
 643         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
 644         spin_unlock_irqrestore(&chip->reg_lock, flags);
 645         return 0;
 646 }
 647
 648 static void snd_cs4231_init(struct snd_cs4231 *chip)
 649 {
 650         unsigned long flags;
 651
 652         snd_cs4231_mce_down(chip);
 653
 654 #ifdef SNDRV_DEBUG_MCE
 655         snd_printk("init: (1)\n");
 656 #endif
 657         snd_cs4231_mce_up(chip);
 658         spin_lock_irqsave(&chip->reg_lock, flags);
 659         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 660                              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
 661                              CS4231_CALIB_MODE);
 662         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 663         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 664         spin_unlock_irqrestore(&chip->reg_lock, flags);
 665         snd_cs4231_mce_down(chip);
 666
 667 #ifdef SNDRV_DEBUG_MCE
 668         snd_printk("init: (2)\n");
 669 #endif
 670
 671         snd_cs4231_mce_up(chip);
 672         spin_lock_irqsave(&chip->reg_lock, flags);
 673         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
 674         spin_unlock_irqrestore(&chip->reg_lock, flags);
 675         snd_cs4231_mce_down(chip);
 676
 677 #ifdef SNDRV_DEBUG_MCE
 678         snd_printk("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
 679 #endif
 680
 681         spin_lock_irqsave(&chip->reg_lock, flags);
 682         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
 683         spin_unlock_irqrestore(&chip->reg_lock, flags);
 684
 685         snd_cs4231_mce_up(chip);
 686         spin_lock_irqsave(&chip->reg_lock, flags);
 687         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
 688         spin_unlock_irqrestore(&chip->reg_lock, flags);
 689         snd_cs4231_mce_down(chip);
 690
 691 #ifdef SNDRV_DEBUG_MCE
 692         snd_printk("init: (4)\n");
 693 #endif
 694
 695         snd_cs4231_mce_up(chip);
 696         spin_lock_irqsave(&chip->reg_lock, flags);
 697         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 698         spin_unlock_irqrestore(&chip->reg_lock, flags);
 699         snd_cs4231_mce_down(chip);
 700
 701 #ifdef SNDRV_DEBUG_MCE
 702         snd_printk("init: (5)\n");
 703 #endif
 704 }
 705
 706 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 707 {
 708         unsigned long flags;
 709
 710         mutex_lock(&chip->open_mutex);
 711         if ((chip->mode & mode) ||
 712             ((chip->mode & CS4231_MODE_OPEN) && chip->single_dma)) {
 713                 mutex_unlock(&chip->open_mutex);
 714                 return -EAGAIN;
 715         }
 716         if (chip->mode & CS4231_MODE_OPEN) {
 717                 chip->mode |= mode;
 718                 mutex_unlock(&chip->open_mutex);
 719                 return 0;
 720         }
 721         /* ok. now enable and ack CODEC IRQ */
 722         spin_lock_irqsave(&chip->reg_lock, flags);
 723         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 724                        CS4231_RECORD_IRQ |
 725                        CS4231_TIMER_IRQ);
 726         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 727         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 728         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 729         chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
 730         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
 731         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 732                        CS4231_RECORD_IRQ |
 733                        CS4231_TIMER_IRQ);
 734         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 735         spin_unlock_irqrestore(&chip->reg_lock, flags);
 736
 737         chip->mode = mode;
 738         mutex_unlock(&chip->open_mutex);
 739         return 0;
 740 }
 741
 742 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 743 {
 744         unsigned long flags;
 745
 746         mutex_lock(&chip->open_mutex);
 747         chip->mode &= ~mode;
 748         if (chip->mode & CS4231_MODE_OPEN) {
 749                 mutex_unlock(&chip->open_mutex);
 750                 return;
 751         }
 752         snd_cs4231_calibrate_mute(chip, 1);
 753
 754         /* disable IRQ */
 755         spin_lock_irqsave(&chip->reg_lock, flags);
 756         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 757         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 758         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 759         chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
 760         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
 761
 762         /* now disable record & playback */
 763
 764         if (chip->image[CS4231_IFACE_CTRL] & (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 765                                                CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 766                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 767                 snd_cs4231_mce_up(chip);
 768                 spin_lock_irqsave(&chip->reg_lock, flags);
 769                 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 770                                                      CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 771                 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 772                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 773                 snd_cs4231_mce_down(chip);
 774                 spin_lock_irqsave(&chip->reg_lock, flags);
 775         }
 776
 777         /* clear IRQ again */
 778         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 779         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 780         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 781         spin_unlock_irqrestore(&chip->reg_lock, flags);
 782
 783         snd_cs4231_calibrate_mute(chip, 0);
 784
 785         chip->mode = 0;
 786         mutex_unlock(&chip->open_mutex);
 787 }
 788
 789 /*
 790  *  timer open/close
 791  */
 792
 793 static int snd_cs4231_timer_open(struct snd_timer * timer)
 794 {
 795         struct snd_cs4231 *chip = snd_timer_chip(timer);
 796         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 797         return 0;
 798 }
 799
 800 static int snd_cs4231_timer_close(struct snd_timer * timer)
 801 {
 802         struct snd_cs4231 *chip = snd_timer_chip(timer);
 803         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 804         return 0;
 805 }
 806
 807 static struct snd_timer_hardware snd_cs4231_timer_table =
 808 {
 809         .flags =        SNDRV_TIMER_HW_AUTO,
 810         .resolution =   9945,
 811         .ticks =        65535,
 812         .open =         snd_cs4231_timer_open,
 813         .close =        snd_cs4231_timer_close,
 814         .c_resolution = snd_cs4231_timer_resolution,
 815         .start =        snd_cs4231_timer_start,
 816         .stop =         snd_cs4231_timer_stop,
 817 };
 818
 819 /*
 820  *  ok.. exported functions..
 821  */
 822
 823 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 824                                          struct snd_pcm_hw_params *hw_params)
 825 {
 826         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 827         unsigned char new_pdfr;
 828         int err;
 829
 830         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 831                 return err;
 832         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
 833                    snd_cs4231_get_rate(params_rate(hw_params));
 834         chip->set_playback_format(chip, hw_params, new_pdfr);
 835         return 0;
 836 }
 837
 838 static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
 839 {
 840         return snd_pcm_lib_free_pages(substream);
 841 }
 842
 843 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 844 {
 845         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 846         struct snd_pcm_runtime *runtime = substream->runtime;
 847         unsigned long flags;
 848         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 849         unsigned int count = snd_pcm_lib_period_bytes(substream);
 850
 851         spin_lock_irqsave(&chip->reg_lock, flags);
 852         chip->p_dma_size = size;
 853         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
 854         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 855         count = snd_cs4231_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
 856         snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
 857         snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
 858         spin_unlock_irqrestore(&chip->reg_lock, flags);
 859 #if 0
 860         snd_cs4231_debug(chip);
 861 #endif
 862         return 0;
 863 }
 864
 865 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 866                                         struct snd_pcm_hw_params *hw_params)
 867 {
 868         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 869         unsigned char new_cdfr;
 870         int err;
 871
 872         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 873                 return err;
 874         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
 875                    snd_cs4231_get_rate(params_rate(hw_params));
 876         chip->set_capture_format(chip, hw_params, new_cdfr);
 877         return 0;
 878 }
 879
 880 static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
 881 {
 882         return snd_pcm_lib_free_pages(substream);
 883 }
 884
 885 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 886 {
 887         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 888         struct snd_pcm_runtime *runtime = substream->runtime;
 889         unsigned long flags;
 890         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 891         unsigned int count = snd_pcm_lib_period_bytes(substream);
 892
 893         spin_lock_irqsave(&chip->reg_lock, flags);
 894         chip->c_dma_size = size;
 895         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 896         snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 897         count = snd_cs4231_get_count(chip->image[CS4231_REC_FORMAT], count) - 1;
 898         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
 899                 snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
 900                 snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
 901         } else {
 902                 snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
 903                 snd_cs4231_out(chip, CS4231_REC_UPR_CNT, (unsigned char) (count >> 8));
 904         }
 905         spin_unlock_irqrestore(&chip->reg_lock, flags);
 906         return 0;
 907 }
 908
 909 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 910 {
 911         unsigned long flags;
 912         unsigned char res;
 913
 914         spin_lock_irqsave(&chip->reg_lock, flags);
 915         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 916         spin_unlock_irqrestore(&chip->reg_lock, flags);
 917         if (res & (0x08 | 0x02))        /* detect overrange only above 0dB; may be user selectable? */
 918                 chip->capture_substream->runtime->overrange++;
 919 }
 920
 921 irqreturn_t snd_cs4231_interrupt(int irq, void *dev_id)
 922 {
 923         struct snd_cs4231 *chip = dev_id;
 924         unsigned char status;
 925
 926         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
 927         if (status & CS4231_TIMER_IRQ) {
 928                 if (chip->timer)
 929                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
 930         }
 931         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
 932                 if (status & CS4231_PLAYBACK_IRQ) {
 933                         if (chip->mode & CS4231_MODE_PLAY) {
 934                                 if (chip->playback_substream)
 935                                         snd_pcm_period_elapsed(chip->playback_substream);
 936                         }
 937                         if (chip->mode & CS4231_MODE_RECORD) {
 938                                 if (chip->capture_substream) {
 939                                         snd_cs4231_overrange(chip);
 940                                         snd_pcm_period_elapsed(chip->capture_substream);
 941                                 }
 942                         }
 943                 }
 944         } else {
 945                 if (status & CS4231_PLAYBACK_IRQ) {
 946                         if (chip->playback_substream)
 947                                 snd_pcm_period_elapsed(chip->playback_substream);
 948                 }
 949                 if (status & CS4231_RECORD_IRQ) {
 950                         if (chip->capture_substream) {
 951                                 snd_cs4231_overrange(chip);
 952                                 snd_pcm_period_elapsed(chip->capture_substream);
 953                         }
 954                 }
 955         }
 956
 957         spin_lock(&chip->reg_lock);
 958         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
 959         spin_unlock(&chip->reg_lock);
 960         return IRQ_HANDLED;
 961 }
 962
 963 static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
 964 {
 965         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 966         size_t ptr;
 967
 968         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
 969                 return 0;
 970         ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
 971         return bytes_to_frames(substream->runtime, ptr);
 972 }
 973
 974 static snd_pcm_uframes_t snd_cs4231_capture_pointer(struct snd_pcm_substream *substream)
 975 {
 976         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 977         size_t ptr;
 978
 979         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
 980                 return 0;
 981         ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
 982         return bytes_to_frames(substream->runtime, ptr);
 983 }
 984
 985 /*
 986
 987  */
 988
 989 static int snd_cs4231_probe(struct snd_cs4231 *chip)
 990 {
 991         unsigned long flags;
 992         int i, id, rev;
 993         unsigned char *ptr;
 994         unsigned int hw;
 995
 996 #if 0
 997         snd_cs4231_debug(chip);
 998 #endif
 999         id = 0;
1000         for (i = 0; i < 50; i++) {
1001                 mb();
1002                 if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
1003                         udelay(2000);
1004                 else {
1005                         spin_lock_irqsave(&chip->reg_lock, flags);
1006                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1007                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1008                         spin_unlock_irqrestore(&chip->reg_lock, flags);
1009                         if (id == 0x0a)
1010                                 break;  /* this is valid value */
1011                 }
1012         }
1013         snd_printdd("cs4231: port = 0x%lx, id = 0x%x\n", chip->port, id);
1014         if (id != 0x0a)
1015                 return -ENODEV; /* no valid device found */
1016
1017         if (((hw = chip->hardware) & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1018                 rev = snd_cs4231_in(chip, CS4231_VERSION) & 0xe7;
1019                 snd_printdd("CS4231: VERSION (I25) = 0x%x\n", rev);
1020                 if (rev == 0x80) {
1021                         unsigned char tmp = snd_cs4231_in(chip, 23);
1022                         snd_cs4231_out(chip, 23, ~tmp);
1023                         if (snd_cs4231_in(chip, 23) != tmp)
1024                                 chip->hardware = CS4231_HW_AD1845;
1025                         else
1026                                 chip->hardware = CS4231_HW_CS4231;
1027                 } else if (rev == 0xa0) {
1028                         chip->hardware = CS4231_HW_CS4231A;
1029                 } else if (rev == 0xa2) {
1030                         chip->hardware = CS4231_HW_CS4232;
1031                 } else if (rev == 0xb2) {
1032                         chip->hardware = CS4231_HW_CS4232A;
1033                 } else if (rev == 0x83) {
1034                         chip->hardware = CS4231_HW_CS4236;
1035                 } else if (rev == 0x03) {
1036                         chip->hardware = CS4231_HW_CS4236B;
1037                 } else {
1038                         snd_printk("unknown CS chip with version 0x%x\n", rev);
1039                         return -ENODEV;         /* unknown CS4231 chip? */
1040                 }
1041         }
1042         spin_lock_irqsave(&chip->reg_lock, flags);
1043         cs4231_inb(chip, CS4231P(STATUS));      /* clear any pendings IRQ */
1044         cs4231_outb(chip, CS4231P(STATUS), 0);
1045         mb();
1046         spin_unlock_irqrestore(&chip->reg_lock, flags);
1047
1048         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1049         switch (chip->hardware) {
1050         case CS4231_HW_INTERWAVE:
1051                 chip->image[CS4231_MISC_INFO] = CS4231_IW_MODE3;
1052                 break;
1053         case CS4231_HW_CS4235:
1054         case CS4231_HW_CS4236B:
1055         case CS4231_HW_CS4237B:
1056         case CS4231_HW_CS4238B:
1057         case CS4231_HW_CS4239:
1058                 if (hw == CS4231_HW_DETECT3)
1059                         chip->image[CS4231_MISC_INFO] = CS4231_4236_MODE3;
1060                 else
1061                         chip->hardware = CS4231_HW_CS4236;
1062                 break;
1063         }
1064
1065         chip->image[CS4231_IFACE_CTRL] =
1066             (chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA) |
1067             (chip->single_dma ? CS4231_SINGLE_DMA : 0);
1068         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1069         chip->image[CS4231_ALT_FEATURE_2] = chip->hardware == CS4231_HW_INTERWAVE ? 0xc2 : 0x01;
1070         ptr = (unsigned char *) &chip->image;
1071         snd_cs4231_mce_down(chip);
1072         spin_lock_irqsave(&chip->reg_lock, flags);
1073         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1074                 snd_cs4231_out(chip, i, *ptr++);
1075         spin_unlock_irqrestore(&chip->reg_lock, flags);
1076         snd_cs4231_mce_up(chip);
1077         snd_cs4231_mce_down(chip);
1078
1079         mdelay(2);
1080
1081         /* ok.. try check hardware version for CS4236+ chips */
1082         if ((hw & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1083                 if (chip->hardware == CS4231_HW_CS4236B) {
1084                         rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
1085                         snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
1086                         id = snd_cs4236_ext_in(chip, CS4236_VERSION);
1087                         snd_cs4236_ext_out(chip, CS4236_VERSION, rev);
1088                         snd_printdd("CS4231: ext version; rev = 0x%x, id = 0x%x\n", rev, id);
1089                         if ((id & 0x1f) == 0x1d) {      /* CS4235 */
1090                                 chip->hardware = CS4231_HW_CS4235;
1091                                 switch (id >> 5) {
1092                                 case 4:
1093                                 case 5:
1094                                 case 6:
1095                                         break;
1096                                 default:
1097                                         snd_printk("unknown CS4235 chip (enhanced version = 0x%x)\n", id);
1098                                 }
1099                         } else if ((id & 0x1f) == 0x0b) {       /* CS4236/B */
1100                                 switch (id >> 5) {
1101                                 case 4:
1102                                 case 5:
1103                                 case 6:
1104                                 case 7:
1105                                         chip->hardware = CS4231_HW_CS4236B;
1106                                         break;
1107                                 default:
1108                                         snd_printk("unknown CS4236 chip (enhanced version = 0x%x)\n", id);
1109                                 }
1110                         } else if ((id & 0x1f) == 0x08) {       /* CS4237B */
1111                                 chip->hardware = CS4231_HW_CS4237B;
1112                                 switch (id >> 5) {
1113                                 case 4:
1114                                 case 5:
1115                                 case 6:
1116                                 case 7:
1117                                         break;
1118                                 default:
1119                                         snd_printk("unknown CS4237B chip (enhanced version = 0x%x)\n", id);
1120                                 }
1121                         } else if ((id & 0x1f) == 0x09) {       /* CS4238B */
1122                                 chip->hardware = CS4231_HW_CS4238B;
1123                                 switch (id >> 5) {
1124                                 case 5:
1125                                 case 6:
1126                                 case 7:
1127                                         break;
1128                                 default:
1129                                         snd_printk("unknown CS4238B chip (enhanced version = 0x%x)\n", id);
1130                                 }
1131                         } else if ((id & 0x1f) == 0x1e) {       /* CS4239 */
1132                                 chip->hardware = CS4231_HW_CS4239;
1133                                 switch (id >> 5) {
1134                                 case 4:
1135                                 case 5:
1136                                 case 6:
1137                                         break;
1138                                 default:
1139                                         snd_printk("unknown CS4239 chip (enhanced version = 0x%x)\n", id);
1140                                 }
1141                         } else {
1142                                 snd_printk("unknown CS4236/CS423xB chip (enhanced version = 0x%x)\n", id);
1143                         }
1144                 }
1145         }
1146         return 0;               /* all things are ok.. */
1147 }
1148
1149 /*
1150
1151  */
1152
1153 static struct snd_pcm_hardware snd_cs4231_playback =
1154 {
1155         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1156                                  SNDRV_PCM_INFO_MMAP_VALID |
1157                                  SNDRV_PCM_INFO_RESUME |
1158                                  SNDRV_PCM_INFO_SYNC_START),
1159         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1160                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1161         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1162         .rate_min =             5510,
1163         .rate_max =             48000,
1164         .channels_min =         1,
1165         .channels_max =         2,
1166         .buffer_bytes_max =     (128*1024),
1167         .period_bytes_min =     64,
1168         .period_bytes_max =     (128*1024),
1169         .periods_min =          1,
1170         .periods_max =          1024,
1171         .fifo_size =            0,
1172 };
1173
1174 static struct snd_pcm_hardware snd_cs4231_capture =
1175 {
1176         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1177                                  SNDRV_PCM_INFO_MMAP_VALID |
1178                                  SNDRV_PCM_INFO_RESUME |
1179                                  SNDRV_PCM_INFO_SYNC_START),
1180         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1181                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1182         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1183         .rate_min =             5510,
1184         .rate_max =             48000,
1185         .channels_min =         1,
1186         .channels_max =         2,
1187         .buffer_bytes_max =     (128*1024),
1188         .period_bytes_min =     64,
1189         .period_bytes_max =     (128*1024),
1190         .periods_min =          1,
1191         .periods_max =          1024,
1192         .fifo_size =            0,
1193 };
1194
1195 /*
1196
1197  */
1198
1199 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1200 {
1201         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1202         struct snd_pcm_runtime *runtime = substream->runtime;
1203         int err;
1204
1205         runtime->hw = snd_cs4231_playback;
1206
1207         /* hardware bug in InterWave chipset */
1208         if (chip->hardware == CS4231_HW_INTERWAVE && chip->dma1 > 3)
1209                 runtime->hw.formats &= ~SNDRV_PCM_FMTBIT_MU_LAW;
1210
1211         /* hardware limitation of cheap chips */
1212         if (chip->hardware == CS4231_HW_CS4235 ||
1213             chip->hardware == CS4231_HW_CS4239)
1214                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1215
1216         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
1217         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
1218
1219         if (chip->claim_dma) {
1220                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma1)) < 0)
1221                         return err;
1222         }
1223
1224         if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
1225                 if (chip->release_dma)
1226                         chip->release_dma(chip, chip->dma_private_data, chip->dma1);
1227                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1228                 return err;
1229         }
1230         chip->playback_substream = substream;
1231         snd_pcm_set_sync(substream);
1232         chip->rate_constraint(runtime);
1233         return 0;
1234 }
1235
1236 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1237 {
1238         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1239         struct snd_pcm_runtime *runtime = substream->runtime;
1240         int err;
1241
1242         runtime->hw = snd_cs4231_capture;
1243
1244         /* hardware limitation of cheap chips */
1245         if (chip->hardware == CS4231_HW_CS4235 ||
1246             chip->hardware == CS4231_HW_CS4239)
1247                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1248
1249         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
1250         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
1251
1252         if (chip->claim_dma) {
1253                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma2)) < 0)
1254                         return err;
1255         }
1256
1257         if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
1258                 if (chip->release_dma)
1259                         chip->release_dma(chip, chip->dma_private_data, chip->dma2);
1260                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1261                 return err;
1262         }
1263         chip->capture_substream = substream;
1264         snd_pcm_set_sync(substream);
1265         chip->rate_constraint(runtime);
1266         return 0;
1267 }
1268
1269 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1270 {
1271         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1272
1273         chip->playback_substream = NULL;
1274         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1275         return 0;
1276 }
1277
1278 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1279 {
1280         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1281
1282         chip->capture_substream = NULL;
1283         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1284         return 0;
1285 }
1286
1287 #ifdef CONFIG_PM
1288
1289 /* lowlevel suspend callback for CS4231 */
1290 static void snd_cs4231_suspend(struct snd_cs4231 *chip)
1291 {
1292         int reg;
1293         unsigned long flags;
1294
1295         snd_pcm_suspend_all(chip->pcm);
1296         spin_lock_irqsave(&chip->reg_lock, flags);
1297         for (reg = 0; reg < 32; reg++)
1298                 chip->image[reg] = snd_cs4231_in(chip, reg);
1299         spin_unlock_irqrestore(&chip->reg_lock, flags);
1300 }
1301
1302 /* lowlevel resume callback for CS4231 */
1303 static void snd_cs4231_resume(struct snd_cs4231 *chip)
1304 {
1305         int reg;
1306         unsigned long flags;
1307         /* int timeout; */
1308
1309         snd_cs4231_mce_up(chip);
1310         spin_lock_irqsave(&chip->reg_lock, flags);
1311         for (reg = 0; reg < 32; reg++) {
1312                 switch (reg) {
1313                 case CS4231_VERSION:
1314                         break;
1315                 default:
1316                         snd_cs4231_out(chip, reg, chip->image[reg]);
1317                         break;
1318                 }
1319         }
1320         spin_unlock_irqrestore(&chip->reg_lock, flags);
1321 #if 1
1322         snd_cs4231_mce_down(chip);
1323 #else
1324         /* The following is a workaround to avoid freeze after resume on TP600E.
1325            This is the first half of copy of snd_cs4231_mce_down(), but doesn't
1326            include rescheduling.  -- iwai
1327            */
1328         snd_cs4231_busy_wait(chip);
1329         spin_lock_irqsave(&chip->reg_lock, flags);
1330         chip->mce_bit &= ~CS4231_MCE;
1331         timeout = cs4231_inb(chip, CS4231P(REGSEL));
1332         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
1333         spin_unlock_irqrestore(&chip->reg_lock, flags);
1334         if (timeout == 0x80)
1335                 snd_printk("down [0x%lx]: serious init problem - codec still busy\n", chip->port);
1336         if ((timeout & CS4231_MCE) == 0 ||
1337             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
1338                 return;
1339         }
1340         snd_cs4231_busy_wait(chip);
1341 #endif
1342 }
1343 #endif /* CONFIG_PM */
1344
1345 static int snd_cs4231_free(struct snd_cs4231 *chip)
1346 {
1347         release_and_free_resource(chip->res_port);
1348         release_and_free_resource(chip->res_cport);
1349         if (chip->irq >= 0) {
1350                 disable_irq(chip->irq);
1351                 if (!(chip->hwshare & CS4231_HWSHARE_IRQ))
1352                         free_irq(chip->irq, (void *) chip);
1353         }
1354         if (!(chip->hwshare & CS4231_HWSHARE_DMA1) && chip->dma1 >= 0) {
1355                 snd_dma_disable(chip->dma1);
1356                 free_dma(chip->dma1);
1357         }
1358         if (!(chip->hwshare & CS4231_HWSHARE_DMA2) && chip->dma2 >= 0 && chip->dma2 != chip->dma1) {
1359                 snd_dma_disable(chip->dma2);
1360                 free_dma(chip->dma2);
1361         }
1362         if (chip->timer)
1363                 snd_device_free(chip->card, chip->timer);
1364         kfree(chip);
1365         return 0;
1366 }
1367
1368 static int snd_cs4231_dev_free(struct snd_device *device)
1369 {
1370         struct snd_cs4231 *chip = device->device_data;
1371         return snd_cs4231_free(chip);
1372 }
1373
1374 const char *snd_cs4231_chip_id(struct snd_cs4231 *chip)
1375 {
1376         switch (chip->hardware) {
1377         case CS4231_HW_CS4231:  return "CS4231";
1378         case CS4231_HW_CS4231A: return "CS4231A";
1379         case CS4231_HW_CS4232:  return "CS4232";
1380         case CS4231_HW_CS4232A: return "CS4232A";
1381         case CS4231_HW_CS4235:  return "CS4235";
1382         case CS4231_HW_CS4236:  return "CS4236";
1383         case CS4231_HW_CS4236B: return "CS4236B";
1384         case CS4231_HW_CS4237B: return "CS4237B";
1385         case CS4231_HW_CS4238B: return "CS4238B";
1386         case CS4231_HW_CS4239:  return "CS4239";
1387         case CS4231_HW_INTERWAVE: return "AMD InterWave";
1388         case CS4231_HW_OPL3SA2: return chip->card->shortname;
1389         case CS4231_HW_AD1845: return "AD1845";
1390         default: return "???";
1391         }
1392 }
1393
1394 static int snd_cs4231_new(struct snd_card *card,
1395                           unsigned short hardware,
1396                           unsigned short hwshare,
1397                           struct snd_cs4231 ** rchip)
1398 {
1399         struct snd_cs4231 *chip;
1400
1401         *rchip = NULL;
1402         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1403         if (chip == NULL)
1404                 return -ENOMEM;
1405         chip->hardware = hardware;
1406         chip->hwshare = hwshare;
1407
1408         spin_lock_init(&chip->reg_lock);
1409         mutex_init(&chip->mce_mutex);
1410         mutex_init(&chip->open_mutex);
1411         chip->card = card;
1412         chip->rate_constraint = snd_cs4231_xrate;
1413         chip->set_playback_format = snd_cs4231_playback_format;
1414         chip->set_capture_format = snd_cs4231_capture_format;
1415         memcpy(&chip->image, &snd_cs4231_original_image, sizeof(snd_cs4231_original_image));
1416
1417         *rchip = chip;
1418         return 0;
1419 }
1420
1421 int snd_cs4231_create(struct snd_card *card,
1422                       unsigned long port,
1423                       unsigned long cport,
1424                       int irq, int dma1, int dma2,
1425                       unsigned short hardware,
1426                       unsigned short hwshare,
1427                       struct snd_cs4231 ** rchip)
1428 {
1429         static struct snd_device_ops ops = {
1430                 .dev_free =     snd_cs4231_dev_free,
1431         };
1432         struct snd_cs4231 *chip;
1433         int err;
1434
1435         err = snd_cs4231_new(card, hardware, hwshare, &chip);
1436         if (err < 0)
1437                 return err;
1438
1439         chip->irq = -1;
1440         chip->dma1 = -1;
1441         chip->dma2 = -1;
1442
1443         if ((chip->res_port = request_region(port, 4, "CS4231")) == NULL) {
1444                 snd_printk(KERN_ERR "cs4231: can't grab port 0x%lx\n", port);
1445                 snd_cs4231_free(chip);
1446                 return -EBUSY;
1447         }
1448         chip->port = port;
1449         if ((long)cport >= 0 && (chip->res_cport = request_region(cport, 8, "CS4232 Control")) == NULL) {
1450                 snd_printk(KERN_ERR "cs4231: can't grab control port 0x%lx\n", cport);
1451                 snd_cs4231_free(chip);
1452                 return -ENODEV;
1453         }
1454         chip->cport = cport;
1455         if (!(hwshare & CS4231_HWSHARE_IRQ) && request_irq(irq, snd_cs4231_interrupt, IRQF_DISABLED, "CS4231", (void *) chip)) {
1456                 snd_printk(KERN_ERR "cs4231: can't grab IRQ %d\n", irq);
1457                 snd_cs4231_free(chip);
1458                 return -EBUSY;
1459         }
1460         chip->irq = irq;
1461         if (!(hwshare & CS4231_HWSHARE_DMA1) && request_dma(dma1, "CS4231 - 1")) {
1462                 snd_printk(KERN_ERR "cs4231: can't grab DMA1 %d\n", dma1);
1463                 snd_cs4231_free(chip);
1464                 return -EBUSY;
1465         }
1466         chip->dma1 = dma1;
1467         if (!(hwshare & CS4231_HWSHARE_DMA2) && dma1 != dma2 && dma2 >= 0 && request_dma(dma2, "CS4231 - 2")) {
1468                 snd_printk(KERN_ERR "cs4231: can't grab DMA2 %d\n", dma2);
1469                 snd_cs4231_free(chip);
1470                 return -EBUSY;
1471         }
1472         if (dma1 == dma2 || dma2 < 0) {
1473                 chip->single_dma = 1;
1474                 chip->dma2 = chip->dma1;
1475         } else
1476                 chip->dma2 = dma2;
1477
1478         /* global setup */
1479         if (snd_cs4231_probe(chip) < 0) {
1480                 snd_cs4231_free(chip);
1481                 return -ENODEV;
1482         }
1483         snd_cs4231_init(chip);
1484
1485 #if 0
1486         if (chip->hardware & CS4231_HW_CS4232_MASK) {
1487                 if (chip->res_cport == NULL)
1488                         snd_printk("CS4232 control port features are not accessible\n");
1489         }
1490 #endif
1491
1492         /* Register device */
1493         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1494                 snd_cs4231_free(chip);
1495                 return err;
1496         }
1497
1498 #ifdef CONFIG_PM
1499         /* Power Management */
1500         chip->suspend = snd_cs4231_suspend;
1501         chip->resume = snd_cs4231_resume;
1502 #endif
1503
1504         *rchip = chip;
1505         return 0;
1506 }
1507
1508 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1509         .open =         snd_cs4231_playback_open,
1510         .close =        snd_cs4231_playback_close,
1511         .ioctl =        snd_pcm_lib_ioctl,
1512         .hw_params =    snd_cs4231_playback_hw_params,
1513         .hw_free =      snd_cs4231_playback_hw_free,
1514         .prepare =      snd_cs4231_playback_prepare,
1515         .trigger =      snd_cs4231_trigger,
1516         .pointer =      snd_cs4231_playback_pointer,
1517 };
1518
1519 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1520         .open =         snd_cs4231_capture_open,
1521         .close =        snd_cs4231_capture_close,
1522         .ioctl =        snd_pcm_lib_ioctl,
1523         .hw_params =    snd_cs4231_capture_hw_params,
1524         .hw_free =      snd_cs4231_capture_hw_free,
1525         .prepare =      snd_cs4231_capture_prepare,
1526         .trigger =      snd_cs4231_trigger,
1527         .pointer =      snd_cs4231_capture_pointer,
1528 };
1529
1530 int snd_cs4231_pcm(struct snd_cs4231 *chip, int device, struct snd_pcm **rpcm)
1531 {
1532         struct snd_pcm *pcm;
1533         int err;
1534
1535         if ((err = snd_pcm_new(chip->card, "CS4231", device, 1, 1, &pcm)) < 0)
1536                 return err;
1537
1538         spin_lock_init(&chip->reg_lock);
1539         mutex_init(&chip->mce_mutex);
1540         mutex_init(&chip->open_mutex);
1541
1542         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
1543         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
1544
1545         /* global setup */
1546         pcm->private_data = chip;
1547         pcm->info_flags = 0;
1548         if (chip->single_dma)
1549                 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1550         if (chip->hardware != CS4231_HW_INTERWAVE)
1551                 pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1552         strcpy(pcm->name, snd_cs4231_chip_id(chip));
1553
1554         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1555                                               snd_dma_isa_data(),
1556                                               64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1557
1558         chip->pcm = pcm;
1559         if (rpcm)
1560                 *rpcm = pcm;
1561         return 0;
1562 }
1563
1564 static void snd_cs4231_timer_free(struct snd_timer *timer)
1565 {
1566         struct snd_cs4231 *chip = timer->private_data;
1567         chip->timer = NULL;
1568 }
1569
1570 int snd_cs4231_timer(struct snd_cs4231 *chip, int device, struct snd_timer **rtimer)
1571 {
1572         struct snd_timer *timer;
1573         struct snd_timer_id tid;
1574         int err;
1575
1576         /* Timer initialization */
1577         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1578         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1579         tid.card = chip->card->number;
1580         tid.device = device;
1581         tid.subdevice = 0;
1582         if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1583                 return err;
1584         strcpy(timer->name, snd_cs4231_chip_id(chip));
1585         timer->private_data = chip;
1586         timer->private_free = snd_cs4231_timer_free;
1587         timer->hw = snd_cs4231_timer_table;
1588         chip->timer = timer;
1589         if (rtimer)
1590                 *rtimer = timer;
1591         return 0;
1592 }
1593
1594 /*
1595  *  MIXER part
1596  */
1597
1598 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1599 {
1600         static char *texts[4] = {
1601                 "Line", "Aux", "Mic", "Mix"
1602         };
1603         static char *opl3sa_texts[4] = {
1604                 "Line", "CD", "Mic", "Mix"
1605         };
1606         static char *gusmax_texts[4] = {
1607                 "Line", "Synth", "Mic", "Mix"
1608         };
1609         char **ptexts = texts;
1610         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1611
1612         snd_assert(chip->card != NULL, return -EINVAL);
1613         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1614         uinfo->count = 2;
1615         uinfo->value.enumerated.items = 4;
1616         if (uinfo->value.enumerated.item > 3)
1617                 uinfo->value.enumerated.item = 3;
1618         if (!strcmp(chip->card->driver, "GUS MAX"))
1619                 ptexts = gusmax_texts;
1620         switch (chip->hardware) {
1621         case CS4231_HW_INTERWAVE: ptexts = gusmax_texts; break;
1622         case CS4231_HW_OPL3SA2: ptexts = opl3sa_texts; break;
1623         }
1624         strcpy(uinfo->value.enumerated.name, ptexts[uinfo->value.enumerated.item]);
1625         return 0;
1626 }
1627
1628 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1629 {
1630         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1631         unsigned long flags;
1632
1633         spin_lock_irqsave(&chip->reg_lock, flags);
1634         ucontrol->value.enumerated.item[0] = (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1635         ucontrol->value.enumerated.item[1] = (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1636         spin_unlock_irqrestore(&chip->reg_lock, flags);
1637         return 0;
1638 }
1639
1640 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1641 {
1642         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1643         unsigned long flags;
1644         unsigned short left, right;
1645         int change;
1646
1647         if (ucontrol->value.enumerated.item[0] > 3 ||
1648             ucontrol->value.enumerated.item[1] > 3)
1649                 return -EINVAL;
1650         left = ucontrol->value.enumerated.item[0] << 6;
1651         right = ucontrol->value.enumerated.item[1] << 6;
1652         spin_lock_irqsave(&chip->reg_lock, flags);
1653         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1654         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1655         change = left != chip->image[CS4231_LEFT_INPUT] ||
1656                  right != chip->image[CS4231_RIGHT_INPUT];
1657         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1658         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1659         spin_unlock_irqrestore(&chip->reg_lock, flags);
1660         return change;
1661 }
1662
1663 int snd_cs4231_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1664 {
1665         int mask = (kcontrol->private_value >> 16) & 0xff;
1666
1667         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1668         uinfo->count = 1;
1669         uinfo->value.integer.min = 0;
1670         uinfo->value.integer.max = mask;
1671         return 0;
1672 }
1673
1674 int snd_cs4231_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1675 {
1676         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1677         unsigned long flags;
1678         int reg = kcontrol->private_value & 0xff;
1679         int shift = (kcontrol->private_value >> 8) & 0xff;
1680         int mask = (kcontrol->private_value >> 16) & 0xff;
1681         int invert = (kcontrol->private_value >> 24) & 0xff;
1682
1683         spin_lock_irqsave(&chip->reg_lock, flags);
1684         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1685         spin_unlock_irqrestore(&chip->reg_lock, flags);
1686         if (invert)
1687                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1688         return 0;
1689 }
1690
1691 int snd_cs4231_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1692 {
1693         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1694         unsigned long flags;
1695         int reg = kcontrol->private_value & 0xff;
1696         int shift = (kcontrol->private_value >> 8) & 0xff;
1697         int mask = (kcontrol->private_value >> 16) & 0xff;
1698         int invert = (kcontrol->private_value >> 24) & 0xff;
1699         int change;
1700         unsigned short val;
1701
1702         val = (ucontrol->value.integer.value[0] & mask);
1703         if (invert)
1704                 val = mask - val;
1705         val <<= shift;
1706         spin_lock_irqsave(&chip->reg_lock, flags);
1707         val = (chip->image[reg] & ~(mask << shift)) | val;
1708         change = val != chip->image[reg];
1709         snd_cs4231_out(chip, reg, val);
1710         spin_unlock_irqrestore(&chip->reg_lock, flags);
1711         return change;
1712 }
1713
1714 int snd_cs4231_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1715 {
1716         int mask = (kcontrol->private_value >> 24) & 0xff;
1717
1718         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1719         uinfo->count = 2;
1720         uinfo->value.integer.min = 0;
1721         uinfo->value.integer.max = mask;
1722         return 0;
1723 }
1724
1725 int snd_cs4231_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1726 {
1727         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1728         unsigned long flags;
1729         int left_reg = kcontrol->private_value & 0xff;
1730         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1731         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1732         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1733         int mask = (kcontrol->private_value >> 24) & 0xff;
1734         int invert = (kcontrol->private_value >> 22) & 1;
1735
1736         spin_lock_irqsave(&chip->reg_lock, flags);
1737         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1738         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1739         spin_unlock_irqrestore(&chip->reg_lock, flags);
1740         if (invert) {
1741                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1742                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1743         }
1744         return 0;
1745 }
1746
1747 int snd_cs4231_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1748 {
1749         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1750         unsigned long flags;
1751         int left_reg = kcontrol->private_value & 0xff;
1752         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1753         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1754         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1755         int mask = (kcontrol->private_value >> 24) & 0xff;
1756         int invert = (kcontrol->private_value >> 22) & 1;
1757         int change;
1758         unsigned short val1, val2;
1759
1760         val1 = ucontrol->value.integer.value[0] & mask;
1761         val2 = ucontrol->value.integer.value[1] & mask;
1762         if (invert) {
1763                 val1 = mask - val1;
1764                 val2 = mask - val2;
1765         }
1766         val1 <<= shift_left;
1767         val2 <<= shift_right;
1768         spin_lock_irqsave(&chip->reg_lock, flags);
1769         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1770         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1771         change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1772         snd_cs4231_out(chip, left_reg, val1);
1773         snd_cs4231_out(chip, right_reg, val2);
1774         spin_unlock_irqrestore(&chip->reg_lock, flags);
1775         return change;
1776 }
1777
1778 static struct snd_kcontrol_new snd_cs4231_controls[] = {
1779 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1780 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1781 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1782 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1783 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1784 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1785 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1786 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1787 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1788 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1789 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1790 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1791 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1792 {
1793         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1794         .name = "Capture Source",
1795         .info = snd_cs4231_info_mux,
1796         .get = snd_cs4231_get_mux,
1797         .put = snd_cs4231_put_mux,
1798 },
1799 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1800 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1801 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1)
1802 };
1803
1804 int snd_cs4231_mixer(struct snd_cs4231 *chip)
1805 {
1806         struct snd_card *card;
1807         unsigned int idx;
1808         int err;
1809
1810         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1811
1812         card = chip->card;
1813
1814         strcpy(card->mixername, chip->pcm->name);
1815
1816         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1817                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_cs4231_controls[idx], chip))) < 0)
1818                         return err;
1819         }
1820         return 0;
1821 }
1822
1823 EXPORT_SYMBOL(snd_cs4231_out);
1824 EXPORT_SYMBOL(snd_cs4231_in);
1825 EXPORT_SYMBOL(snd_cs4236_ext_out);
1826 EXPORT_SYMBOL(snd_cs4236_ext_in);
1827 EXPORT_SYMBOL(snd_cs4231_mce_up);
1828 EXPORT_SYMBOL(snd_cs4231_mce_down);
1829 EXPORT_SYMBOL(snd_cs4231_interrupt);
1830 EXPORT_SYMBOL(snd_cs4231_chip_id);
1831 EXPORT_SYMBOL(snd_cs4231_create);
1832 EXPORT_SYMBOL(snd_cs4231_pcm);
1833 EXPORT_SYMBOL(snd_cs4231_mixer);
1834 EXPORT_SYMBOL(snd_cs4231_timer);
1835 EXPORT_SYMBOL(snd_cs4231_info_single);
1836 EXPORT_SYMBOL(snd_cs4231_get_single);
1837 EXPORT_SYMBOL(snd_cs4231_put_single);
1838 EXPORT_SYMBOL(snd_cs4231_info_double);
1839 EXPORT_SYMBOL(snd_cs4231_get_double);
1840 EXPORT_SYMBOL(snd_cs4231_put_double);
1841
1842 /*
1843  *  INIT part
1844  */
1845
1846 static int __init alsa_cs4231_init(void)
1847 {
1848         return 0;
1849 }
1850
1851 static void __exit alsa_cs4231_exit(void)
1852 {
1853 }
1854
1855 module_init(alsa_cs4231_init)
1856 module_exit(alsa_cs4231_exit)