sound/isa/cs423x/cs4231_lib.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/delay.h>
  28 #include <linux/pm.h>
  29 #include <linux/init.h>
  30 #include <linux/interrupt.h>
  31 #include <linux/slab.h>
  32 #include <linux/ioport.h>
  33 #include <sound/core.h>
  34 #include <sound/cs4231.h>
  35 #include <sound/pcm_params.h>
  36
  37 #include <asm/io.h>
  38 #include <asm/dma.h>
  39 #include <asm/irq.h>
  40
  41 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  42 MODULE_DESCRIPTION("Routines for control of CS4231(A)/CS4232/InterWave & compatible chips");
  43 MODULE_LICENSE("GPL");
  44
  45 #if 0
  46 #define SNDRV_DEBUG_MCE
  47 #endif
  48
  49 /*
  50  *  Some variables
  51  */
  52
  53 static unsigned char freq_bits[14] = {
  54         /* 5510 */      0x00 | CS4231_XTAL2,
  55         /* 6620 */      0x0E | CS4231_XTAL2,
  56         /* 8000 */      0x00 | CS4231_XTAL1,
  57         /* 9600 */      0x0E | CS4231_XTAL1,
  58         /* 11025 */     0x02 | CS4231_XTAL2,
  59         /* 16000 */     0x02 | CS4231_XTAL1,
  60         /* 18900 */     0x04 | CS4231_XTAL2,
  61         /* 22050 */     0x06 | CS4231_XTAL2,
  62         /* 27042 */     0x04 | CS4231_XTAL1,
  63         /* 32000 */     0x06 | CS4231_XTAL1,
  64         /* 33075 */     0x0C | CS4231_XTAL2,
  65         /* 37800 */     0x08 | CS4231_XTAL2,
  66         /* 44100 */     0x0A | CS4231_XTAL2,
  67         /* 48000 */     0x0C | CS4231_XTAL1
  68 };
  69
  70 static unsigned int rates[14] = {
  71         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
  72         27042, 32000, 33075, 37800, 44100, 48000
  73 };
  74
  75 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
  76         .count = ARRAY_SIZE(rates),
  77         .list = rates,
  78         .mask = 0,
  79 };
  80
  81 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
  82 {
  83         return snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
  84 }
  85
  86 static unsigned char snd_cs4231_original_image[32] =
  87 {
  88         0x00,                   /* 00/00 - lic */
  89         0x00,                   /* 01/01 - ric */
  90         0x9f,                   /* 02/02 - la1ic */
  91         0x9f,                   /* 03/03 - ra1ic */
  92         0x9f,                   /* 04/04 - la2ic */
  93         0x9f,                   /* 05/05 - ra2ic */
  94         0xbf,                   /* 06/06 - loc */
  95         0xbf,                   /* 07/07 - roc */
  96         0x20,                   /* 08/08 - pdfr */
  97         CS4231_AUTOCALIB,       /* 09/09 - ic */
  98         0x00,                   /* 0a/10 - pc */
  99         0x00,                   /* 0b/11 - ti */
 100         CS4231_MODE2,           /* 0c/12 - mi */
 101         0xfc,                   /* 0d/13 - lbc */
 102         0x00,                   /* 0e/14 - pbru */
 103         0x00,                   /* 0f/15 - pbrl */
 104         0x80,                   /* 10/16 - afei */
 105         0x01,                   /* 11/17 - afeii */
 106         0x9f,                   /* 12/18 - llic */
 107         0x9f,                   /* 13/19 - rlic */
 108         0x00,                   /* 14/20 - tlb */
 109         0x00,                   /* 15/21 - thb */
 110         0x00,                   /* 16/22 - la3mic/reserved */
 111         0x00,                   /* 17/23 - ra3mic/reserved */
 112         0x00,                   /* 18/24 - afs */
 113         0x00,                   /* 19/25 - lamoc/version */
 114         0xcf,                   /* 1a/26 - mioc */
 115         0x00,                   /* 1b/27 - ramoc/reserved */
 116         0x20,                   /* 1c/28 - cdfr */
 117         0x00,                   /* 1d/29 - res4 */
 118         0x00,                   /* 1e/30 - cbru */
 119         0x00,                   /* 1f/31 - cbrl */
 120 };
 121
 122 static unsigned char snd_opti93x_original_image[32] =
 123 {
 124         0x00,           /* 00/00 - l_mixout_outctrl */
 125         0x00,           /* 01/01 - r_mixout_outctrl */
 126         0x88,           /* 02/02 - l_cd_inctrl */
 127         0x88,           /* 03/03 - r_cd_inctrl */
 128         0x88,           /* 04/04 - l_a1/fm_inctrl */
 129         0x88,           /* 05/05 - r_a1/fm_inctrl */
 130         0x80,           /* 06/06 - l_dac_inctrl */
 131         0x80,           /* 07/07 - r_dac_inctrl */
 132         0x00,           /* 08/08 - ply_dataform_reg */
 133         0x00,           /* 09/09 - if_conf */
 134         0x00,           /* 0a/10 - pin_ctrl */
 135         0x00,           /* 0b/11 - err_init_reg */
 136         0x0a,           /* 0c/12 - id_reg */
 137         0x00,           /* 0d/13 - reserved */
 138         0x00,           /* 0e/14 - ply_upcount_reg */
 139         0x00,           /* 0f/15 - ply_lowcount_reg */
 140         0x88,           /* 10/16 - reserved/l_a1_inctrl */
 141         0x88,           /* 11/17 - reserved/r_a1_inctrl */
 142         0x88,           /* 12/18 - l_line_inctrl */
 143         0x88,           /* 13/19 - r_line_inctrl */
 144         0x88,           /* 14/20 - l_mic_inctrl */
 145         0x88,           /* 15/21 - r_mic_inctrl */
 146         0x80,           /* 16/22 - l_out_outctrl */
 147         0x80,           /* 17/23 - r_out_outctrl */
 148         0x00,           /* 18/24 - reserved */
 149         0x00,           /* 19/25 - reserved */
 150         0x00,           /* 1a/26 - reserved */
 151         0x00,           /* 1b/27 - reserved */
 152         0x00,           /* 1c/28 - cap_dataform_reg */
 153         0x00,           /* 1d/29 - reserved */
 154         0x00,           /* 1e/30 - cap_upcount_reg */
 155         0x00            /* 1f/31 - cap_lowcount_reg */
 156 };
 157
 158 /*
 159  *  Basic I/O functions
 160  */
 161
 162 static inline void cs4231_outb(struct snd_cs4231 *chip, u8 offset, u8 val)
 163 {
 164         outb(val, chip->port + offset);
 165 }
 166
 167 static inline u8 cs4231_inb(struct snd_cs4231 *chip, u8 offset)
 168 {
 169         return inb(chip->port + offset);
 170 }
 171
 172 static void snd_cs4231_wait(struct snd_cs4231 *chip)
 173 {
 174         int timeout;
 175
 176         for (timeout = 250;
 177              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 178              timeout--)
 179                 udelay(100);
 180 }
 181
 182 static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
 183                             unsigned char mask, unsigned char value)
 184 {
 185         unsigned char tmp = (chip->image[reg] & mask) | value;
 186
 187         snd_cs4231_wait(chip);
 188 #ifdef CONFIG_SND_DEBUG
 189         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 190                 snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 191 #endif
 192         chip->image[reg] = tmp;
 193         if (!chip->calibrate_mute) {
 194                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 195                 wmb();
 196                 cs4231_outb(chip, CS4231P(REG), tmp);
 197                 mb();
 198         }
 199 }
 200
 201 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
 202 {
 203         int timeout;
 204
 205         for (timeout = 250;
 206              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 207              timeout--)
 208                 udelay(10);
 209         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 210         cs4231_outb(chip, CS4231P(REG), value);
 211         mb();
 212 }
 213
 214 void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
 215 {
 216         snd_cs4231_wait(chip);
 217 #ifdef CONFIG_SND_DEBUG
 218         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 219                 snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 220 #endif
 221         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 222         cs4231_outb(chip, CS4231P(REG), value);
 223         chip->image[reg] = value;
 224         mb();
 225         snd_printdd("codec out - reg 0x%x = 0x%x\n",
 226                         chip->mce_bit | reg, value);
 227 }
 228
 229 unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
 230 {
 231         snd_cs4231_wait(chip);
 232 #ifdef CONFIG_SND_DEBUG
 233         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 234                 snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
 235 #endif
 236         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | reg);
 237         mb();
 238         return cs4231_inb(chip, CS4231P(REG));
 239 }
 240
 241 void snd_cs4236_ext_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char val)
 242 {
 243         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
 244         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
 245         cs4231_outb(chip, CS4231P(REG), val);
 246         chip->eimage[CS4236_REG(reg)] = val;
 247 #if 0
 248         printk("ext out : reg = 0x%x, val = 0x%x\n", reg, val);
 249 #endif
 250 }
 251
 252 unsigned char snd_cs4236_ext_in(struct snd_cs4231 *chip, unsigned char reg)
 253 {
 254         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | 0x17);
 255         cs4231_outb(chip, CS4231P(REG), reg | (chip->image[CS4236_EXT_REG] & 0x01));
 256 #if 1
 257         return cs4231_inb(chip, CS4231P(REG));
 258 #else
 259         {
 260                 unsigned char res;
 261                 res = cs4231_inb(chip, CS4231P(REG));
 262                 printk("ext in : reg = 0x%x, val = 0x%x\n", reg, res);
 263                 return res;
 264         }
 265 #endif
 266 }
 267
 268 #if 0
 269
 270 static void snd_cs4231_debug(struct snd_cs4231 *chip)
 271 {
 272         printk("CS4231 REGS:      INDEX = 0x%02x  ", cs4231_inb(chip, CS4231P(REGSEL)));
 273         printk("                 STATUS = 0x%02x\n", cs4231_inb(chip, CS4231P(STATUS)));
 274         printk("  0x00: left input      = 0x%02x  ", snd_cs4231_in(chip, 0x00));
 275         printk("  0x10: alt 1 (CFIG 2)  = 0x%02x\n", snd_cs4231_in(chip, 0x10));
 276         printk("  0x01: right input     = 0x%02x  ", snd_cs4231_in(chip, 0x01));
 277         printk("  0x11: alt 2 (CFIG 3)  = 0x%02x\n", snd_cs4231_in(chip, 0x11));
 278         printk("  0x02: GF1 left input  = 0x%02x  ", snd_cs4231_in(chip, 0x02));
 279         printk("  0x12: left line in    = 0x%02x\n", snd_cs4231_in(chip, 0x12));
 280         printk("  0x03: GF1 right input = 0x%02x  ", snd_cs4231_in(chip, 0x03));
 281         printk("  0x13: right line in   = 0x%02x\n", snd_cs4231_in(chip, 0x13));
 282         printk("  0x04: CD left input   = 0x%02x  ", snd_cs4231_in(chip, 0x04));
 283         printk("  0x14: timer low       = 0x%02x\n", snd_cs4231_in(chip, 0x14));
 284         printk("  0x05: CD right input  = 0x%02x  ", snd_cs4231_in(chip, 0x05));
 285         printk("  0x15: timer high      = 0x%02x\n", snd_cs4231_in(chip, 0x15));
 286         printk("  0x06: left output     = 0x%02x  ", snd_cs4231_in(chip, 0x06));
 287         printk("  0x16: left MIC (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x16));
 288         printk("  0x07: right output    = 0x%02x  ", snd_cs4231_in(chip, 0x07));
 289         printk("  0x17: right MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x17));
 290         printk("  0x08: playback format = 0x%02x  ", snd_cs4231_in(chip, 0x08));
 291         printk("  0x18: IRQ status      = 0x%02x\n", snd_cs4231_in(chip, 0x18));
 292         printk("  0x09: iface (CFIG 1)  = 0x%02x  ", snd_cs4231_in(chip, 0x09));
 293         printk("  0x19: left line out   = 0x%02x\n", snd_cs4231_in(chip, 0x19));
 294         printk("  0x0a: pin control     = 0x%02x  ", snd_cs4231_in(chip, 0x0a));
 295         printk("  0x1a: mono control    = 0x%02x\n", snd_cs4231_in(chip, 0x1a));
 296         printk("  0x0b: init & status   = 0x%02x  ", snd_cs4231_in(chip, 0x0b));
 297         printk("  0x1b: right line out  = 0x%02x\n", snd_cs4231_in(chip, 0x1b));
 298         printk("  0x0c: revision & mode = 0x%02x  ", snd_cs4231_in(chip, 0x0c));
 299         printk("  0x1c: record format   = 0x%02x\n", snd_cs4231_in(chip, 0x1c));
 300         printk("  0x0d: loopback        = 0x%02x  ", snd_cs4231_in(chip, 0x0d));
 301         printk("  0x1d: var freq (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x1d));
 302         printk("  0x0e: ply upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0e));
 303         printk("  0x1e: ply lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1e));
 304         printk("  0x0f: rec upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0f));
 305         printk("  0x1f: rec lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1f));
 306 }
 307
 308 #endif
 309
 310 /*
 311  *  CS4231 detection / MCE routines
 312  */
 313
 314 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 315 {
 316         int timeout;
 317
 318         /* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
 319         for (timeout = 5; timeout > 0; timeout--)
 320                 cs4231_inb(chip, CS4231P(REGSEL));
 321         /* end of cleanup sequence */
 322         for (timeout = 250;
 323              timeout > 0 && (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT);
 324              timeout--)
 325                 udelay(10);
 326 }
 327
 328 void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 329 {
 330         unsigned long flags;
 331         int timeout;
 332
 333         snd_cs4231_wait(chip);
 334 #ifdef CONFIG_SND_DEBUG
 335         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 336                 snd_printk("mce_up - auto calibration time out (0)\n");
 337 #endif
 338         spin_lock_irqsave(&chip->reg_lock, flags);
 339         chip->mce_bit |= CS4231_MCE;
 340         timeout = cs4231_inb(chip, CS4231P(REGSEL));
 341         if (timeout == 0x80)
 342                 snd_printk("mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
 343         if (!(timeout & CS4231_MCE))
 344                 cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
 345         spin_unlock_irqrestore(&chip->reg_lock, flags);
 346 }
 347
 348 void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 349 {
 350         unsigned long flags;
 351         unsigned long end_time;
 352         int timeout;
 353
 354         snd_cs4231_busy_wait(chip);
 355
 356 #ifdef CONFIG_SND_DEBUG
 357         if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
 358                 snd_printk("mce_down [0x%lx] - auto calibration time out (0)\n", (long)CS4231P(REGSEL));
 359 #endif
 360         spin_lock_irqsave(&chip->reg_lock, flags);
 361         chip->mce_bit &= ~CS4231_MCE;
 362         timeout = cs4231_inb(chip, CS4231P(REGSEL));
 363         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
 364         spin_unlock_irqrestore(&chip->reg_lock, flags);
 365         if (timeout == 0x80)
 366                 snd_printk("mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
 367         if ((timeout & CS4231_MCE) == 0 ||
 368             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
 369                 return;
 370         }
 371
 372         /*
 373          * Wait for (possible -- during init auto-calibration may not be set)
 374          * calibration process to start. Needs upto 5 sample periods on AD1848
 375          * which at the slowest possible rate of 5.5125 kHz means 907 us.
 376          */
 377         msleep(1);
 378
 379         snd_printdd("(1) jiffies = %lu\n", jiffies);
 380
 381         /* check condition up to 250 ms */
 382         end_time = jiffies + msecs_to_jiffies(250);
 383         while (snd_cs4231_in(chip, CS4231_TEST_INIT) &
 384                 CS4231_CALIB_IN_PROGRESS) {
 385
 386                 if (time_after(jiffies, end_time)) {
 387                         snd_printk(KERN_ERR "mce_down - "
 388                                         "auto calibration time out (2)\n");
 389                         return;
 390                 }
 391                 msleep(1);
 392         }
 393
 394         snd_printdd("(2) jiffies = %lu\n", jiffies);
 395
 396         /* check condition up to 100 ms */
 397         end_time = jiffies + msecs_to_jiffies(100);
 398         while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
 399                 if (time_after(jiffies, end_time)) {
 400                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
 401                         return;
 402                 }
 403                 msleep(1);
 404         }
 405
 406         snd_printdd("(3) jiffies = %lu\n", jiffies);
 407         snd_printd("mce_down - exit = 0x%x\n", cs4231_inb(chip, CS4231P(REGSEL)));
 408 }
 409
 410 static unsigned int snd_cs4231_get_count(unsigned char format, unsigned int size)
 411 {
 412         switch (format & 0xe0) {
 413         case CS4231_LINEAR_16:
 414         case CS4231_LINEAR_16_BIG:
 415                 size >>= 1;
 416                 break;
 417         case CS4231_ADPCM_16:
 418                 return size >> 2;
 419         }
 420         if (format & CS4231_STEREO)
 421                 size >>= 1;
 422         return size;
 423 }
 424
 425 static int snd_cs4231_trigger(struct snd_pcm_substream *substream,
 426                               int cmd)
 427 {
 428         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 429         int result = 0;
 430         unsigned int what;
 431         struct snd_pcm_substream *s;
 432         int do_start;
 433
 434 #if 0
 435         printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, cs4231_inb(chip, CS4231P(STATUS)));
 436 #endif
 437
 438         switch (cmd) {
 439         case SNDRV_PCM_TRIGGER_START:
 440         case SNDRV_PCM_TRIGGER_RESUME:
 441                 do_start = 1; break;
 442         case SNDRV_PCM_TRIGGER_STOP:
 443         case SNDRV_PCM_TRIGGER_SUSPEND:
 444                 do_start = 0; break;
 445         default:
 446                 return -EINVAL;
 447         }
 448
 449         what = 0;
 450         snd_pcm_group_for_each_entry(s, substream) {
 451                 if (s == chip->playback_substream) {
 452                         what |= CS4231_PLAYBACK_ENABLE;
 453                         snd_pcm_trigger_done(s, substream);
 454                 } else if (s == chip->capture_substream) {
 455                         what |= CS4231_RECORD_ENABLE;
 456                         snd_pcm_trigger_done(s, substream);
 457                 }
 458         }
 459         spin_lock(&chip->reg_lock);
 460         if (do_start) {
 461                 chip->image[CS4231_IFACE_CTRL] |= what;
 462                 if (chip->trigger)
 463                         chip->trigger(chip, what, 1);
 464         } else {
 465                 chip->image[CS4231_IFACE_CTRL] &= ~what;
 466                 if (chip->trigger)
 467                         chip->trigger(chip, what, 0);
 468         }
 469         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 470         spin_unlock(&chip->reg_lock);
 471 #if 0
 472         snd_cs4231_debug(chip);
 473 #endif
 474         return result;
 475 }
 476
 477 /*
 478  *  CODEC I/O
 479  */
 480
 481 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 482 {
 483         int i;
 484
 485         for (i = 0; i < ARRAY_SIZE(rates); i++)
 486                 if (rate == rates[i])
 487                         return freq_bits[i];
 488         // snd_BUG();
 489         return freq_bits[ARRAY_SIZE(rates) - 1];
 490 }
 491
 492 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip,
 493                                            int format,
 494                                            int channels)
 495 {
 496         unsigned char rformat;
 497
 498         rformat = CS4231_LINEAR_8;
 499         switch (format) {
 500         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = CS4231_ULAW_8; break;
 501         case SNDRV_PCM_FORMAT_A_LAW:    rformat = CS4231_ALAW_8; break;
 502         case SNDRV_PCM_FORMAT_S16_LE:   rformat = CS4231_LINEAR_16; break;
 503         case SNDRV_PCM_FORMAT_S16_BE:   rformat = CS4231_LINEAR_16_BIG; break;
 504         case SNDRV_PCM_FORMAT_IMA_ADPCM:        rformat = CS4231_ADPCM_16; break;
 505         }
 506         if (channels > 1)
 507                 rformat |= CS4231_STEREO;
 508 #if 0
 509         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 510 #endif
 511         return rformat;
 512 }
 513
 514 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 515 {
 516         unsigned long flags;
 517
 518         mute = mute ? 1 : 0;
 519         spin_lock_irqsave(&chip->reg_lock, flags);
 520         if (chip->calibrate_mute == mute) {
 521                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 522                 return;
 523         }
 524         if (!mute) {
 525                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT, chip->image[CS4231_LEFT_INPUT]);
 526                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT, chip->image[CS4231_RIGHT_INPUT]);
 527                 snd_cs4231_dout(chip, CS4231_LOOPBACK, chip->image[CS4231_LOOPBACK]);
 528         }
 529         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 530         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 531         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 532         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 533         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 534         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 535         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN, mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 536         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN, mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 537         snd_cs4231_dout(chip, CS4231_MONO_CTRL, mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 538         if (chip->hardware == CS4231_HW_INTERWAVE) {
 539                 snd_cs4231_dout(chip, CS4231_LEFT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_LEFT_MIC_INPUT]);
 540                 snd_cs4231_dout(chip, CS4231_RIGHT_MIC_INPUT, mute ? 0x80 : chip->image[CS4231_RIGHT_MIC_INPUT]);
 541                 snd_cs4231_dout(chip, CS4231_LINE_LEFT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_LEFT_OUTPUT]);
 542                 snd_cs4231_dout(chip, CS4231_LINE_RIGHT_OUTPUT, mute ? 0x80 : chip->image[CS4231_LINE_RIGHT_OUTPUT]);
 543         }
 544         chip->calibrate_mute = mute;
 545         spin_unlock_irqrestore(&chip->reg_lock, flags);
 546 }
 547
 548 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 549                                        struct snd_pcm_hw_params *params,
 550                                        unsigned char pdfr)
 551 {
 552         unsigned long flags;
 553         int full_calib = 1;
 554
 555         mutex_lock(&chip->mce_mutex);
 556         snd_cs4231_calibrate_mute(chip, 1);
 557         if (chip->hardware == CS4231_HW_CS4231A ||
 558             (chip->hardware & CS4231_HW_CS4232_MASK)) {
 559                 spin_lock_irqsave(&chip->reg_lock, flags);
 560                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (pdfr & 0x0f)) {      /* rate is same? */
 561                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x10);
 562                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
 563                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x10);
 564                         udelay(100); /* Fixes audible clicks at least on GUS MAX */
 565                         full_calib = 0;
 566                 }
 567                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 568         }
 569         if (full_calib) {
 570                 snd_cs4231_mce_up(chip);
 571                 spin_lock_irqsave(&chip->reg_lock, flags);
 572                 if (chip->hardware != CS4231_HW_INTERWAVE && !chip->single_dma) {
 573                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 574                                         (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 575                                         (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 576                                         pdfr);
 577                 } else {
 578                         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT] = pdfr);
 579                 }
 580                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 581                 if (chip->hardware == CS4231_HW_OPL3SA2)
 582                         udelay(100);    /* this seems to help */
 583                 snd_cs4231_mce_down(chip);
 584         }
 585         snd_cs4231_calibrate_mute(chip, 0);
 586         mutex_unlock(&chip->mce_mutex);
 587 }
 588
 589 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 590                                       struct snd_pcm_hw_params *params,
 591                                       unsigned char cdfr)
 592 {
 593         unsigned long flags;
 594         int full_calib = 1;
 595
 596         mutex_lock(&chip->mce_mutex);
 597         snd_cs4231_calibrate_mute(chip, 1);
 598         if (chip->hardware == CS4231_HW_CS4231A ||
 599             (chip->hardware & CS4231_HW_CS4232_MASK)) {
 600                 spin_lock_irqsave(&chip->reg_lock, flags);
 601                 if ((chip->image[CS4231_PLAYBK_FORMAT] & 0x0f) == (cdfr & 0x0f) ||      /* rate is same? */
 602                     (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 603                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | 0x20);
 604                         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT] = cdfr);
 605                         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~0x20);
 606                         full_calib = 0;
 607                 }
 608                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 609         }
 610         if (full_calib) {
 611                 snd_cs4231_mce_up(chip);
 612                 spin_lock_irqsave(&chip->reg_lock, flags);
 613                 if (chip->hardware != CS4231_HW_INTERWAVE) {
 614                         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 615                                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 616                                                ((chip->single_dma ? cdfr : chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 617                                                (cdfr & 0x0f));
 618                                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 619                                 snd_cs4231_mce_down(chip);
 620                                 snd_cs4231_mce_up(chip);
 621                                 spin_lock_irqsave(&chip->reg_lock, flags);
 622                         }
 623                 }
 624                 snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 625                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 626                 snd_cs4231_mce_down(chip);
 627         }
 628         snd_cs4231_calibrate_mute(chip, 0);
 629         mutex_unlock(&chip->mce_mutex);
 630 }
 631
 632 /*
 633  *  Timer interface
 634  */
 635
 636 static unsigned long snd_cs4231_timer_resolution(struct snd_timer * timer)
 637 {
 638         struct snd_cs4231 *chip = snd_timer_chip(timer);
 639         if (chip->hardware & CS4231_HW_CS4236B_MASK)
 640                 return 14467;
 641         else
 642                 return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 643 }
 644
 645 static int snd_cs4231_timer_start(struct snd_timer * timer)
 646 {
 647         unsigned long flags;
 648         unsigned int ticks;
 649         struct snd_cs4231 *chip = snd_timer_chip(timer);
 650         spin_lock_irqsave(&chip->reg_lock, flags);
 651         ticks = timer->sticks;
 652         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 653             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 654             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 655                 snd_cs4231_out(chip, CS4231_TIMER_HIGH, chip->image[CS4231_TIMER_HIGH] = (unsigned char) (ticks >> 8));
 656                 snd_cs4231_out(chip, CS4231_TIMER_LOW, chip->image[CS4231_TIMER_LOW] = (unsigned char) ticks);
 657                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
 658         }
 659         spin_unlock_irqrestore(&chip->reg_lock, flags);
 660         return 0;
 661 }
 662
 663 static int snd_cs4231_timer_stop(struct snd_timer * timer)
 664 {
 665         unsigned long flags;
 666         struct snd_cs4231 *chip = snd_timer_chip(timer);
 667         spin_lock_irqsave(&chip->reg_lock, flags);
 668         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
 669         spin_unlock_irqrestore(&chip->reg_lock, flags);
 670         return 0;
 671 }
 672
 673 static void snd_cs4231_init(struct snd_cs4231 *chip)
 674 {
 675         unsigned long flags;
 676
 677         snd_cs4231_mce_down(chip);
 678
 679 #ifdef SNDRV_DEBUG_MCE
 680         snd_printk("init: (1)\n");
 681 #endif
 682         snd_cs4231_mce_up(chip);
 683         spin_lock_irqsave(&chip->reg_lock, flags);
 684         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 685                              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
 686                              CS4231_CALIB_MODE);
 687         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 688         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 689         spin_unlock_irqrestore(&chip->reg_lock, flags);
 690         snd_cs4231_mce_down(chip);
 691
 692 #ifdef SNDRV_DEBUG_MCE
 693         snd_printk("init: (2)\n");
 694 #endif
 695
 696         snd_cs4231_mce_up(chip);
 697         spin_lock_irqsave(&chip->reg_lock, flags);
 698         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
 699         spin_unlock_irqrestore(&chip->reg_lock, flags);
 700         snd_cs4231_mce_down(chip);
 701
 702 #ifdef SNDRV_DEBUG_MCE
 703         snd_printk("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
 704 #endif
 705
 706         spin_lock_irqsave(&chip->reg_lock, flags);
 707         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
 708         spin_unlock_irqrestore(&chip->reg_lock, flags);
 709
 710         snd_cs4231_mce_up(chip);
 711         spin_lock_irqsave(&chip->reg_lock, flags);
 712         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
 713         spin_unlock_irqrestore(&chip->reg_lock, flags);
 714         snd_cs4231_mce_down(chip);
 715
 716 #ifdef SNDRV_DEBUG_MCE
 717         snd_printk("init: (4)\n");
 718 #endif
 719
 720         snd_cs4231_mce_up(chip);
 721         spin_lock_irqsave(&chip->reg_lock, flags);
 722         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 723         spin_unlock_irqrestore(&chip->reg_lock, flags);
 724         snd_cs4231_mce_down(chip);
 725
 726 #ifdef SNDRV_DEBUG_MCE
 727         snd_printk("init: (5)\n");
 728 #endif
 729 }
 730
 731 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 732 {
 733         unsigned long flags;
 734
 735         mutex_lock(&chip->open_mutex);
 736         if ((chip->mode & mode) ||
 737             ((chip->mode & CS4231_MODE_OPEN) && chip->single_dma)) {
 738                 mutex_unlock(&chip->open_mutex);
 739                 return -EAGAIN;
 740         }
 741         if (chip->mode & CS4231_MODE_OPEN) {
 742                 chip->mode |= mode;
 743                 mutex_unlock(&chip->open_mutex);
 744                 return 0;
 745         }
 746         /* ok. now enable and ack CODEC IRQ */
 747         spin_lock_irqsave(&chip->reg_lock, flags);
 748         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 749                        CS4231_RECORD_IRQ |
 750                        CS4231_TIMER_IRQ);
 751         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 752         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 753         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 754         chip->image[CS4231_PIN_CTRL] |= CS4231_IRQ_ENABLE;
 755         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
 756         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 757                        CS4231_RECORD_IRQ |
 758                        CS4231_TIMER_IRQ);
 759         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 760         spin_unlock_irqrestore(&chip->reg_lock, flags);
 761
 762         chip->mode = mode;
 763         mutex_unlock(&chip->open_mutex);
 764         return 0;
 765 }
 766
 767 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 768 {
 769         unsigned long flags;
 770
 771         mutex_lock(&chip->open_mutex);
 772         chip->mode &= ~mode;
 773         if (chip->mode & CS4231_MODE_OPEN) {
 774                 mutex_unlock(&chip->open_mutex);
 775                 return;
 776         }
 777         snd_cs4231_calibrate_mute(chip, 1);
 778
 779         /* disable IRQ */
 780         spin_lock_irqsave(&chip->reg_lock, flags);
 781         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 782         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 783         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 784         chip->image[CS4231_PIN_CTRL] &= ~CS4231_IRQ_ENABLE;
 785         snd_cs4231_out(chip, CS4231_PIN_CTRL, chip->image[CS4231_PIN_CTRL]);
 786
 787         /* now disable record & playback */
 788
 789         if (chip->image[CS4231_IFACE_CTRL] & (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 790                                                CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 791                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 792                 snd_cs4231_mce_up(chip);
 793                 spin_lock_irqsave(&chip->reg_lock, flags);
 794                 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 795                                                      CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 796                 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 797                 spin_unlock_irqrestore(&chip->reg_lock, flags);
 798                 snd_cs4231_mce_down(chip);
 799                 spin_lock_irqsave(&chip->reg_lock, flags);
 800         }
 801
 802         /* clear IRQ again */
 803         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 804         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 805         cs4231_outb(chip, CS4231P(STATUS), 0);  /* clear IRQ */
 806         spin_unlock_irqrestore(&chip->reg_lock, flags);
 807
 808         snd_cs4231_calibrate_mute(chip, 0);
 809
 810         chip->mode = 0;
 811         mutex_unlock(&chip->open_mutex);
 812 }
 813
 814 /*
 815  *  timer open/close
 816  */
 817
 818 static int snd_cs4231_timer_open(struct snd_timer * timer)
 819 {
 820         struct snd_cs4231 *chip = snd_timer_chip(timer);
 821         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 822         return 0;
 823 }
 824
 825 static int snd_cs4231_timer_close(struct snd_timer * timer)
 826 {
 827         struct snd_cs4231 *chip = snd_timer_chip(timer);
 828         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 829         return 0;
 830 }
 831
 832 static struct snd_timer_hardware snd_cs4231_timer_table =
 833 {
 834         .flags =        SNDRV_TIMER_HW_AUTO,
 835         .resolution =   9945,
 836         .ticks =        65535,
 837         .open =         snd_cs4231_timer_open,
 838         .close =        snd_cs4231_timer_close,
 839         .c_resolution = snd_cs4231_timer_resolution,
 840         .start =        snd_cs4231_timer_start,
 841         .stop =         snd_cs4231_timer_stop,
 842 };
 843
 844 /*
 845  *  ok.. exported functions..
 846  */
 847
 848 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 849                                          struct snd_pcm_hw_params *hw_params)
 850 {
 851         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 852         unsigned char new_pdfr;
 853         int err;
 854
 855         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 856                 return err;
 857         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
 858                    snd_cs4231_get_rate(params_rate(hw_params));
 859         chip->set_playback_format(chip, hw_params, new_pdfr);
 860         return 0;
 861 }
 862
 863 static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
 864 {
 865         return snd_pcm_lib_free_pages(substream);
 866 }
 867
 868 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 869 {
 870         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 871         struct snd_pcm_runtime *runtime = substream->runtime;
 872         unsigned long flags;
 873         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 874         unsigned int count = snd_pcm_lib_period_bytes(substream);
 875
 876         spin_lock_irqsave(&chip->reg_lock, flags);
 877         chip->p_dma_size = size;
 878         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO);
 879         snd_dma_program(chip->dma1, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
 880         count = snd_cs4231_get_count(chip->image[CS4231_PLAYBK_FORMAT], count) - 1;
 881         snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
 882         snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
 883         spin_unlock_irqrestore(&chip->reg_lock, flags);
 884 #if 0
 885         snd_cs4231_debug(chip);
 886 #endif
 887         return 0;
 888 }
 889
 890 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 891                                         struct snd_pcm_hw_params *hw_params)
 892 {
 893         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 894         unsigned char new_cdfr;
 895         int err;
 896
 897         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
 898                 return err;
 899         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params), params_channels(hw_params)) |
 900                    snd_cs4231_get_rate(params_rate(hw_params));
 901         chip->set_capture_format(chip, hw_params, new_cdfr);
 902         return 0;
 903 }
 904
 905 static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
 906 {
 907         return snd_pcm_lib_free_pages(substream);
 908 }
 909
 910 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 911 {
 912         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 913         struct snd_pcm_runtime *runtime = substream->runtime;
 914         unsigned long flags;
 915         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
 916         unsigned int count = snd_pcm_lib_period_bytes(substream);
 917
 918         spin_lock_irqsave(&chip->reg_lock, flags);
 919         chip->c_dma_size = size;
 920         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 921         snd_dma_program(chip->dma2, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
 922         count = snd_cs4231_get_count(chip->image[CS4231_REC_FORMAT], count) - 1;
 923         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
 924                 snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, (unsigned char) count);
 925                 snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, (unsigned char) (count >> 8));
 926         } else {
 927                 snd_cs4231_out(chip, CS4231_REC_LWR_CNT, (unsigned char) count);
 928                 snd_cs4231_out(chip, CS4231_REC_UPR_CNT, (unsigned char) (count >> 8));
 929         }
 930         spin_unlock_irqrestore(&chip->reg_lock, flags);
 931         return 0;
 932 }
 933
 934 void snd_cs4231_overrange(struct snd_cs4231 *chip)
 935 {
 936         unsigned long flags;
 937         unsigned char res;
 938
 939         spin_lock_irqsave(&chip->reg_lock, flags);
 940         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 941         spin_unlock_irqrestore(&chip->reg_lock, flags);
 942         if (res & (0x08 | 0x02))        /* detect overrange only above 0dB; may be user selectable? */
 943                 chip->capture_substream->runtime->overrange++;
 944 }
 945
 946 irqreturn_t snd_cs4231_interrupt(int irq, void *dev_id)
 947 {
 948         struct snd_cs4231 *chip = dev_id;
 949         unsigned char status;
 950
 951         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
 952         if (status & CS4231_TIMER_IRQ) {
 953                 if (chip->timer)
 954                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
 955         }
 956         if (chip->single_dma && chip->hardware != CS4231_HW_INTERWAVE) {
 957                 if (status & CS4231_PLAYBACK_IRQ) {
 958                         if (chip->mode & CS4231_MODE_PLAY) {
 959                                 if (chip->playback_substream)
 960                                         snd_pcm_period_elapsed(chip->playback_substream);
 961                         }
 962                         if (chip->mode & CS4231_MODE_RECORD) {
 963                                 if (chip->capture_substream) {
 964                                         snd_cs4231_overrange(chip);
 965                                         snd_pcm_period_elapsed(chip->capture_substream);
 966                                 }
 967                         }
 968                 }
 969         } else {
 970                 if (status & CS4231_PLAYBACK_IRQ) {
 971                         if (chip->playback_substream)
 972                                 snd_pcm_period_elapsed(chip->playback_substream);
 973                 }
 974                 if (status & CS4231_RECORD_IRQ) {
 975                         if (chip->capture_substream) {
 976                                 snd_cs4231_overrange(chip);
 977                                 snd_pcm_period_elapsed(chip->capture_substream);
 978                         }
 979                 }
 980         }
 981
 982         spin_lock(&chip->reg_lock);
 983         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
 984         spin_unlock(&chip->reg_lock);
 985         return IRQ_HANDLED;
 986 }
 987
 988 static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
 989 {
 990         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 991         size_t ptr;
 992
 993         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
 994                 return 0;
 995         ptr = snd_dma_pointer(chip->dma1, chip->p_dma_size);
 996         return bytes_to_frames(substream->runtime, ptr);
 997 }
 998
 999 static snd_pcm_uframes_t snd_cs4231_capture_pointer(struct snd_pcm_substream *substream)
1000 {
1001         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1002         size_t ptr;
1003
1004         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1005                 return 0;
1006         ptr = snd_dma_pointer(chip->dma2, chip->c_dma_size);
1007         return bytes_to_frames(substream->runtime, ptr);
1008 }
1009
1010 /*
1011
1012  */
1013
1014 static int snd_cs4231_probe(struct snd_cs4231 *chip)
1015 {
1016         unsigned long flags;
1017         int i, id, rev;
1018         unsigned char *ptr;
1019         unsigned int hw;
1020
1021 #if 0
1022         snd_cs4231_debug(chip);
1023 #endif
1024         id = 0;
1025         for (i = 0; i < 50; i++) {
1026                 mb();
1027                 if (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT)
1028                         udelay(2000);
1029                 else {
1030                         spin_lock_irqsave(&chip->reg_lock, flags);
1031                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1032                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1033                         spin_unlock_irqrestore(&chip->reg_lock, flags);
1034                         if (id == 0x0a)
1035                                 break;  /* this is valid value */
1036                 }
1037         }
1038         snd_printdd("cs4231: port = 0x%lx, id = 0x%x\n", chip->port, id);
1039         if (id != 0x0a)
1040                 return -ENODEV; /* no valid device found */
1041
1042         if (((hw = chip->hardware) & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1043                 rev = snd_cs4231_in(chip, CS4231_VERSION) & 0xe7;
1044                 snd_printdd("CS4231: VERSION (I25) = 0x%x\n", rev);
1045                 if (rev == 0x80) {
1046                         unsigned char tmp = snd_cs4231_in(chip, 23);
1047                         snd_cs4231_out(chip, 23, ~tmp);
1048                         if (snd_cs4231_in(chip, 23) != tmp)
1049                                 chip->hardware = CS4231_HW_AD1845;
1050                         else
1051                                 chip->hardware = CS4231_HW_CS4231;
1052                 } else if (rev == 0xa0) {
1053                         chip->hardware = CS4231_HW_CS4231A;
1054                 } else if (rev == 0xa2) {
1055                         chip->hardware = CS4231_HW_CS4232;
1056                 } else if (rev == 0xb2) {
1057                         chip->hardware = CS4231_HW_CS4232A;
1058                 } else if (rev == 0x83) {
1059                         chip->hardware = CS4231_HW_CS4236;
1060                 } else if (rev == 0x03) {
1061                         chip->hardware = CS4231_HW_CS4236B;
1062                 } else {
1063                         snd_printk("unknown CS chip with version 0x%x\n", rev);
1064                         return -ENODEV;         /* unknown CS4231 chip? */
1065                 }
1066         }
1067         spin_lock_irqsave(&chip->reg_lock, flags);
1068         cs4231_inb(chip, CS4231P(STATUS));      /* clear any pendings IRQ */
1069         cs4231_outb(chip, CS4231P(STATUS), 0);
1070         mb();
1071         spin_unlock_irqrestore(&chip->reg_lock, flags);
1072
1073         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1074         switch (chip->hardware) {
1075         case CS4231_HW_INTERWAVE:
1076                 chip->image[CS4231_MISC_INFO] = CS4231_IW_MODE3;
1077                 break;
1078         case CS4231_HW_CS4235:
1079         case CS4231_HW_CS4236B:
1080         case CS4231_HW_CS4237B:
1081         case CS4231_HW_CS4238B:
1082         case CS4231_HW_CS4239:
1083                 if (hw == CS4231_HW_DETECT3)
1084                         chip->image[CS4231_MISC_INFO] = CS4231_4236_MODE3;
1085                 else
1086                         chip->hardware = CS4231_HW_CS4236;
1087                 break;
1088         }
1089
1090         chip->image[CS4231_IFACE_CTRL] =
1091             (chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA) |
1092             (chip->single_dma ? CS4231_SINGLE_DMA : 0);
1093         if (chip->hardware != CS4231_HW_OPTI93X) {
1094                 chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1095                 chip->image[CS4231_ALT_FEATURE_2] =
1096                         chip->hardware == CS4231_HW_INTERWAVE ? 0xc2 : 0x01;
1097         }
1098         ptr = (unsigned char *) &chip->image;
1099         snd_cs4231_mce_down(chip);
1100         spin_lock_irqsave(&chip->reg_lock, flags);
1101         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1102                 snd_cs4231_out(chip, i, *ptr++);
1103         spin_unlock_irqrestore(&chip->reg_lock, flags);
1104         snd_cs4231_mce_up(chip);
1105         snd_cs4231_mce_down(chip);
1106
1107         mdelay(2);
1108
1109         /* ok.. try check hardware version for CS4236+ chips */
1110         if ((hw & CS4231_HW_TYPE_MASK) == CS4231_HW_DETECT) {
1111                 if (chip->hardware == CS4231_HW_CS4236B) {
1112                         rev = snd_cs4236_ext_in(chip, CS4236_VERSION);
1113                         snd_cs4236_ext_out(chip, CS4236_VERSION, 0xff);
1114                         id = snd_cs4236_ext_in(chip, CS4236_VERSION);
1115                         snd_cs4236_ext_out(chip, CS4236_VERSION, rev);
1116                         snd_printdd("CS4231: ext version; rev = 0x%x, id = 0x%x\n", rev, id);
1117                         if ((id & 0x1f) == 0x1d) {      /* CS4235 */
1118                                 chip->hardware = CS4231_HW_CS4235;
1119                                 switch (id >> 5) {
1120                                 case 4:
1121                                 case 5:
1122                                 case 6:
1123                                         break;
1124                                 default:
1125                                         snd_printk("unknown CS4235 chip (enhanced version = 0x%x)\n", id);
1126                                 }
1127                         } else if ((id & 0x1f) == 0x0b) {       /* CS4236/B */
1128                                 switch (id >> 5) {
1129                                 case 4:
1130                                 case 5:
1131                                 case 6:
1132                                 case 7:
1133                                         chip->hardware = CS4231_HW_CS4236B;
1134                                         break;
1135                                 default:
1136                                         snd_printk("unknown CS4236 chip (enhanced version = 0x%x)\n", id);
1137                                 }
1138                         } else if ((id & 0x1f) == 0x08) {       /* CS4237B */
1139                                 chip->hardware = CS4231_HW_CS4237B;
1140                                 switch (id >> 5) {
1141                                 case 4:
1142                                 case 5:
1143                                 case 6:
1144                                 case 7:
1145                                         break;
1146                                 default:
1147                                         snd_printk("unknown CS4237B chip (enhanced version = 0x%x)\n", id);
1148                                 }
1149                         } else if ((id & 0x1f) == 0x09) {       /* CS4238B */
1150                                 chip->hardware = CS4231_HW_CS4238B;
1151                                 switch (id >> 5) {
1152                                 case 5:
1153                                 case 6:
1154                                 case 7:
1155                                         break;
1156                                 default:
1157                                         snd_printk("unknown CS4238B chip (enhanced version = 0x%x)\n", id);
1158                                 }
1159                         } else if ((id & 0x1f) == 0x1e) {       /* CS4239 */
1160                                 chip->hardware = CS4231_HW_CS4239;
1161                                 switch (id >> 5) {
1162                                 case 4:
1163                                 case 5:
1164                                 case 6:
1165                                         break;
1166                                 default:
1167                                         snd_printk("unknown CS4239 chip (enhanced version = 0x%x)\n", id);
1168                                 }
1169                         } else {
1170                                 snd_printk("unknown CS4236/CS423xB chip (enhanced version = 0x%x)\n", id);
1171                         }
1172                 }
1173         }
1174         return 0;               /* all things are ok.. */
1175 }
1176
1177 /*
1178
1179  */
1180
1181 static struct snd_pcm_hardware snd_cs4231_playback =
1182 {
1183         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1184                                  SNDRV_PCM_INFO_MMAP_VALID |
1185                                  SNDRV_PCM_INFO_RESUME |
1186                                  SNDRV_PCM_INFO_SYNC_START),
1187         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1188                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1189         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1190         .rate_min =             5510,
1191         .rate_max =             48000,
1192         .channels_min =         1,
1193         .channels_max =         2,
1194         .buffer_bytes_max =     (128*1024),
1195         .period_bytes_min =     64,
1196         .period_bytes_max =     (128*1024),
1197         .periods_min =          1,
1198         .periods_max =          1024,
1199         .fifo_size =            0,
1200 };
1201
1202 static struct snd_pcm_hardware snd_cs4231_capture =
1203 {
1204         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1205                                  SNDRV_PCM_INFO_MMAP_VALID |
1206                                  SNDRV_PCM_INFO_RESUME |
1207                                  SNDRV_PCM_INFO_SYNC_START),
1208         .formats =              (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_IMA_ADPCM |
1209                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE),
1210         .rates =                SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1211         .rate_min =             5510,
1212         .rate_max =             48000,
1213         .channels_min =         1,
1214         .channels_max =         2,
1215         .buffer_bytes_max =     (128*1024),
1216         .period_bytes_min =     64,
1217         .period_bytes_max =     (128*1024),
1218         .periods_min =          1,
1219         .periods_max =          1024,
1220         .fifo_size =            0,
1221 };
1222
1223 /*
1224
1225  */
1226
1227 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1228 {
1229         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1230         struct snd_pcm_runtime *runtime = substream->runtime;
1231         int err;
1232
1233         runtime->hw = snd_cs4231_playback;
1234
1235         /* hardware bug in InterWave chipset */
1236         if (chip->hardware == CS4231_HW_INTERWAVE && chip->dma1 > 3)
1237                 runtime->hw.formats &= ~SNDRV_PCM_FMTBIT_MU_LAW;
1238
1239         /* hardware limitation of cheap chips */
1240         if (chip->hardware == CS4231_HW_CS4235 ||
1241             chip->hardware == CS4231_HW_CS4239)
1242                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1243
1244         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.buffer_bytes_max);
1245         snd_pcm_limit_isa_dma_size(chip->dma1, &runtime->hw.period_bytes_max);
1246
1247         if (chip->claim_dma) {
1248                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma1)) < 0)
1249                         return err;
1250         }
1251
1252         if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
1253                 if (chip->release_dma)
1254                         chip->release_dma(chip, chip->dma_private_data, chip->dma1);
1255                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1256                 return err;
1257         }
1258         chip->playback_substream = substream;
1259         snd_pcm_set_sync(substream);
1260         chip->rate_constraint(runtime);
1261         return 0;
1262 }
1263
1264 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1265 {
1266         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1267         struct snd_pcm_runtime *runtime = substream->runtime;
1268         int err;
1269
1270         runtime->hw = snd_cs4231_capture;
1271
1272         /* hardware limitation of cheap chips */
1273         if (chip->hardware == CS4231_HW_CS4235 ||
1274             chip->hardware == CS4231_HW_CS4239)
1275                 runtime->hw.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE;
1276
1277         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.buffer_bytes_max);
1278         snd_pcm_limit_isa_dma_size(chip->dma2, &runtime->hw.period_bytes_max);
1279
1280         if (chip->claim_dma) {
1281                 if ((err = chip->claim_dma(chip, chip->dma_private_data, chip->dma2)) < 0)
1282                         return err;
1283         }
1284
1285         if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
1286                 if (chip->release_dma)
1287                         chip->release_dma(chip, chip->dma_private_data, chip->dma2);
1288                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1289                 return err;
1290         }
1291         chip->capture_substream = substream;
1292         snd_pcm_set_sync(substream);
1293         chip->rate_constraint(runtime);
1294         return 0;
1295 }
1296
1297 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1298 {
1299         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1300
1301         chip->playback_substream = NULL;
1302         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1303         return 0;
1304 }
1305
1306 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1307 {
1308         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1309
1310         chip->capture_substream = NULL;
1311         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1312         return 0;
1313 }
1314
1315 #ifdef CONFIG_PM
1316
1317 /* lowlevel suspend callback for CS4231 */
1318 static void snd_cs4231_suspend(struct snd_cs4231 *chip)
1319 {
1320         int reg;
1321         unsigned long flags;
1322
1323         snd_pcm_suspend_all(chip->pcm);
1324         spin_lock_irqsave(&chip->reg_lock, flags);
1325         for (reg = 0; reg < 32; reg++)
1326                 chip->image[reg] = snd_cs4231_in(chip, reg);
1327         spin_unlock_irqrestore(&chip->reg_lock, flags);
1328 }
1329
1330 /* lowlevel resume callback for CS4231 */
1331 static void snd_cs4231_resume(struct snd_cs4231 *chip)
1332 {
1333         int reg;
1334         unsigned long flags;
1335         /* int timeout; */
1336
1337         snd_cs4231_mce_up(chip);
1338         spin_lock_irqsave(&chip->reg_lock, flags);
1339         for (reg = 0; reg < 32; reg++) {
1340                 switch (reg) {
1341                 case CS4231_VERSION:
1342                         break;
1343                 default:
1344                         snd_cs4231_out(chip, reg, chip->image[reg]);
1345                         break;
1346                 }
1347         }
1348         spin_unlock_irqrestore(&chip->reg_lock, flags);
1349 #if 1
1350         snd_cs4231_mce_down(chip);
1351 #else
1352         /* The following is a workaround to avoid freeze after resume on TP600E.
1353            This is the first half of copy of snd_cs4231_mce_down(), but doesn't
1354            include rescheduling.  -- iwai
1355            */
1356         snd_cs4231_busy_wait(chip);
1357         spin_lock_irqsave(&chip->reg_lock, flags);
1358         chip->mce_bit &= ~CS4231_MCE;
1359         timeout = cs4231_inb(chip, CS4231P(REGSEL));
1360         cs4231_outb(chip, CS4231P(REGSEL), chip->mce_bit | (timeout & 0x1f));
1361         spin_unlock_irqrestore(&chip->reg_lock, flags);
1362         if (timeout == 0x80)
1363                 snd_printk("down [0x%lx]: serious init problem - codec still busy\n", chip->port);
1364         if ((timeout & CS4231_MCE) == 0 ||
1365             !(chip->hardware & (CS4231_HW_CS4231_MASK | CS4231_HW_CS4232_MASK))) {
1366                 return;
1367         }
1368         snd_cs4231_busy_wait(chip);
1369 #endif
1370 }
1371 #endif /* CONFIG_PM */
1372
1373 static int snd_cs4231_free(struct snd_cs4231 *chip)
1374 {
1375         release_and_free_resource(chip->res_port);
1376         release_and_free_resource(chip->res_cport);
1377         if (chip->irq >= 0) {
1378                 disable_irq(chip->irq);
1379                 if (!(chip->hwshare & CS4231_HWSHARE_IRQ))
1380                         free_irq(chip->irq, (void *) chip);
1381         }
1382         if (!(chip->hwshare & CS4231_HWSHARE_DMA1) && chip->dma1 >= 0) {
1383                 snd_dma_disable(chip->dma1);
1384                 free_dma(chip->dma1);
1385         }
1386         if (!(chip->hwshare & CS4231_HWSHARE_DMA2) && chip->dma2 >= 0 && chip->dma2 != chip->dma1) {
1387                 snd_dma_disable(chip->dma2);
1388                 free_dma(chip->dma2);
1389         }
1390         if (chip->timer)
1391                 snd_device_free(chip->card, chip->timer);
1392         kfree(chip);
1393         return 0;
1394 }
1395
1396 static int snd_cs4231_dev_free(struct snd_device *device)
1397 {
1398         struct snd_cs4231 *chip = device->device_data;
1399         return snd_cs4231_free(chip);
1400 }
1401
1402 const char *snd_cs4231_chip_id(struct snd_cs4231 *chip)
1403 {
1404         switch (chip->hardware) {
1405         case CS4231_HW_CS4231:  return "CS4231";
1406         case CS4231_HW_CS4231A: return "CS4231A";
1407         case CS4231_HW_CS4232:  return "CS4232";
1408         case CS4231_HW_CS4232A: return "CS4232A";
1409         case CS4231_HW_CS4235:  return "CS4235";
1410         case CS4231_HW_CS4236:  return "CS4236";
1411         case CS4231_HW_CS4236B: return "CS4236B";
1412         case CS4231_HW_CS4237B: return "CS4237B";
1413         case CS4231_HW_CS4238B: return "CS4238B";
1414         case CS4231_HW_CS4239:  return "CS4239";
1415         case CS4231_HW_INTERWAVE: return "AMD InterWave";
1416         case CS4231_HW_OPL3SA2: return chip->card->shortname;
1417         case CS4231_HW_AD1845: return "AD1845";
1418         case CS4231_HW_OPTI93X: return "OPTi 93x";
1419         default: return "???";
1420         }
1421 }
1422
1423 static int snd_cs4231_new(struct snd_card *card,
1424                           unsigned short hardware,
1425                           unsigned short hwshare,
1426                           struct snd_cs4231 ** rchip)
1427 {
1428         struct snd_cs4231 *chip;
1429
1430         *rchip = NULL;
1431         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1432         if (chip == NULL)
1433                 return -ENOMEM;
1434         chip->hardware = hardware;
1435         chip->hwshare = hwshare;
1436
1437         spin_lock_init(&chip->reg_lock);
1438         mutex_init(&chip->mce_mutex);
1439         mutex_init(&chip->open_mutex);
1440         chip->card = card;
1441         chip->rate_constraint = snd_cs4231_xrate;
1442         chip->set_playback_format = snd_cs4231_playback_format;
1443         chip->set_capture_format = snd_cs4231_capture_format;
1444         if (chip->hardware == CS4231_HW_OPTI93X)
1445                 memcpy(&chip->image, &snd_opti93x_original_image,
1446                        sizeof(snd_opti93x_original_image));
1447         else
1448                 memcpy(&chip->image, &snd_cs4231_original_image,
1449                        sizeof(snd_cs4231_original_image));
1450
1451         *rchip = chip;
1452         return 0;
1453 }
1454
1455 int snd_cs4231_create(struct snd_card *card,
1456                       unsigned long port,
1457                       unsigned long cport,
1458                       int irq, int dma1, int dma2,
1459                       unsigned short hardware,
1460                       unsigned short hwshare,
1461                       struct snd_cs4231 ** rchip)
1462 {
1463         static struct snd_device_ops ops = {
1464                 .dev_free =     snd_cs4231_dev_free,
1465         };
1466         struct snd_cs4231 *chip;
1467         int err;
1468
1469         err = snd_cs4231_new(card, hardware, hwshare, &chip);
1470         if (err < 0)
1471                 return err;
1472
1473         chip->irq = -1;
1474         chip->dma1 = -1;
1475         chip->dma2 = -1;
1476
1477         if ((chip->res_port = request_region(port, 4, "CS4231")) == NULL) {
1478                 snd_printk(KERN_ERR "cs4231: can't grab port 0x%lx\n", port);
1479                 snd_cs4231_free(chip);
1480                 return -EBUSY;
1481         }
1482         chip->port = port;
1483         if ((long)cport >= 0 && (chip->res_cport = request_region(cport, 8, "CS4232 Control")) == NULL) {
1484                 snd_printk(KERN_ERR "cs4231: can't grab control port 0x%lx\n", cport);
1485                 snd_cs4231_free(chip);
1486                 return -ENODEV;
1487         }
1488         chip->cport = cport;
1489         if (!(hwshare & CS4231_HWSHARE_IRQ) && request_irq(irq, snd_cs4231_interrupt, IRQF_DISABLED, "CS4231", (void *) chip)) {
1490                 snd_printk(KERN_ERR "cs4231: can't grab IRQ %d\n", irq);
1491                 snd_cs4231_free(chip);
1492                 return -EBUSY;
1493         }
1494         chip->irq = irq;
1495         if (!(hwshare & CS4231_HWSHARE_DMA1) && request_dma(dma1, "CS4231 - 1")) {
1496                 snd_printk(KERN_ERR "cs4231: can't grab DMA1 %d\n", dma1);
1497                 snd_cs4231_free(chip);
1498                 return -EBUSY;
1499         }
1500         chip->dma1 = dma1;
1501         if (!(hwshare & CS4231_HWSHARE_DMA2) && dma1 != dma2 && dma2 >= 0 && request_dma(dma2, "CS4231 - 2")) {
1502                 snd_printk(KERN_ERR "cs4231: can't grab DMA2 %d\n", dma2);
1503                 snd_cs4231_free(chip);
1504                 return -EBUSY;
1505         }
1506         if (dma1 == dma2 || dma2 < 0) {
1507                 chip->single_dma = 1;
1508                 chip->dma2 = chip->dma1;
1509         } else
1510                 chip->dma2 = dma2;
1511
1512         /* global setup */
1513         if (snd_cs4231_probe(chip) < 0) {
1514                 snd_cs4231_free(chip);
1515                 return -ENODEV;
1516         }
1517         snd_cs4231_init(chip);
1518
1519 #if 0
1520         if (chip->hardware & CS4231_HW_CS4232_MASK) {
1521                 if (chip->res_cport == NULL)
1522                         snd_printk("CS4232 control port features are not accessible\n");
1523         }
1524 #endif
1525
1526         /* Register device */
1527         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1528                 snd_cs4231_free(chip);
1529                 return err;
1530         }
1531
1532 #ifdef CONFIG_PM
1533         /* Power Management */
1534         chip->suspend = snd_cs4231_suspend;
1535         chip->resume = snd_cs4231_resume;
1536 #endif
1537
1538         *rchip = chip;
1539         return 0;
1540 }
1541
1542 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1543         .open =         snd_cs4231_playback_open,
1544         .close =        snd_cs4231_playback_close,
1545         .ioctl =        snd_pcm_lib_ioctl,
1546         .hw_params =    snd_cs4231_playback_hw_params,
1547         .hw_free =      snd_cs4231_playback_hw_free,
1548         .prepare =      snd_cs4231_playback_prepare,
1549         .trigger =      snd_cs4231_trigger,
1550         .pointer =      snd_cs4231_playback_pointer,
1551 };
1552
1553 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1554         .open =         snd_cs4231_capture_open,
1555         .close =        snd_cs4231_capture_close,
1556         .ioctl =        snd_pcm_lib_ioctl,
1557         .hw_params =    snd_cs4231_capture_hw_params,
1558         .hw_free =      snd_cs4231_capture_hw_free,
1559         .prepare =      snd_cs4231_capture_prepare,
1560         .trigger =      snd_cs4231_trigger,
1561         .pointer =      snd_cs4231_capture_pointer,
1562 };
1563
1564 int snd_cs4231_pcm(struct snd_cs4231 *chip, int device, struct snd_pcm **rpcm)
1565 {
1566         struct snd_pcm *pcm;
1567         int err;
1568
1569         if ((err = snd_pcm_new(chip->card, "CS4231", device, 1, 1, &pcm)) < 0)
1570                 return err;
1571
1572         spin_lock_init(&chip->reg_lock);
1573         mutex_init(&chip->mce_mutex);
1574         mutex_init(&chip->open_mutex);
1575
1576         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
1577         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
1578
1579         /* global setup */
1580         pcm->private_data = chip;
1581         pcm->info_flags = 0;
1582         if (chip->single_dma)
1583                 pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
1584         if (chip->hardware != CS4231_HW_INTERWAVE)
1585                 pcm->info_flags |= SNDRV_PCM_INFO_JOINT_DUPLEX;
1586         strcpy(pcm->name, snd_cs4231_chip_id(chip));
1587
1588         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1589                                               snd_dma_isa_data(),
1590                                               64*1024, chip->dma1 > 3 || chip->dma2 > 3 ? 128*1024 : 64*1024);
1591
1592         chip->pcm = pcm;
1593         if (rpcm)
1594                 *rpcm = pcm;
1595         return 0;
1596 }
1597
1598 static void snd_cs4231_timer_free(struct snd_timer *timer)
1599 {
1600         struct snd_cs4231 *chip = timer->private_data;
1601         chip->timer = NULL;
1602 }
1603
1604 int snd_cs4231_timer(struct snd_cs4231 *chip, int device, struct snd_timer **rtimer)
1605 {
1606         struct snd_timer *timer;
1607         struct snd_timer_id tid;
1608         int err;
1609
1610         /* Timer initialization */
1611         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1612         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1613         tid.card = chip->card->number;
1614         tid.device = device;
1615         tid.subdevice = 0;
1616         if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1617                 return err;
1618         strcpy(timer->name, snd_cs4231_chip_id(chip));
1619         timer->private_data = chip;
1620         timer->private_free = snd_cs4231_timer_free;
1621         timer->hw = snd_cs4231_timer_table;
1622         chip->timer = timer;
1623         if (rtimer)
1624                 *rtimer = timer;
1625         return 0;
1626 }
1627
1628 /*
1629  *  MIXER part
1630  */
1631
1632 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1633 {
1634         static char *texts[4] = {
1635                 "Line", "Aux", "Mic", "Mix"
1636         };
1637         static char *opl3sa_texts[4] = {
1638                 "Line", "CD", "Mic", "Mix"
1639         };
1640         static char *gusmax_texts[4] = {
1641                 "Line", "Synth", "Mic", "Mix"
1642         };
1643         char **ptexts = texts;
1644         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1645
1646         snd_assert(chip->card != NULL, return -EINVAL);
1647         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1648         uinfo->count = 2;
1649         uinfo->value.enumerated.items = 4;
1650         if (uinfo->value.enumerated.item > 3)
1651                 uinfo->value.enumerated.item = 3;
1652         if (!strcmp(chip->card->driver, "GUS MAX"))
1653                 ptexts = gusmax_texts;
1654         switch (chip->hardware) {
1655         case CS4231_HW_INTERWAVE: ptexts = gusmax_texts; break;
1656         case CS4231_HW_OPL3SA2: ptexts = opl3sa_texts; break;
1657         }
1658         strcpy(uinfo->value.enumerated.name, ptexts[uinfo->value.enumerated.item]);
1659         return 0;
1660 }
1661
1662 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1663 {
1664         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1665         unsigned long flags;
1666
1667         spin_lock_irqsave(&chip->reg_lock, flags);
1668         ucontrol->value.enumerated.item[0] = (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1669         ucontrol->value.enumerated.item[1] = (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1670         spin_unlock_irqrestore(&chip->reg_lock, flags);
1671         return 0;
1672 }
1673
1674 static int snd_cs4231_put_mux(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         unsigned short left, right;
1679         int change;
1680
1681         if (ucontrol->value.enumerated.item[0] > 3 ||
1682             ucontrol->value.enumerated.item[1] > 3)
1683                 return -EINVAL;
1684         left = ucontrol->value.enumerated.item[0] << 6;
1685         right = ucontrol->value.enumerated.item[1] << 6;
1686         spin_lock_irqsave(&chip->reg_lock, flags);
1687         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1688         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1689         change = left != chip->image[CS4231_LEFT_INPUT] ||
1690                  right != chip->image[CS4231_RIGHT_INPUT];
1691         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1692         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1693         spin_unlock_irqrestore(&chip->reg_lock, flags);
1694         return change;
1695 }
1696
1697 int snd_cs4231_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1698 {
1699         int mask = (kcontrol->private_value >> 16) & 0xff;
1700
1701         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1702         uinfo->count = 1;
1703         uinfo->value.integer.min = 0;
1704         uinfo->value.integer.max = mask;
1705         return 0;
1706 }
1707
1708 int snd_cs4231_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1709 {
1710         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1711         unsigned long flags;
1712         int reg = kcontrol->private_value & 0xff;
1713         int shift = (kcontrol->private_value >> 8) & 0xff;
1714         int mask = (kcontrol->private_value >> 16) & 0xff;
1715         int invert = (kcontrol->private_value >> 24) & 0xff;
1716
1717         spin_lock_irqsave(&chip->reg_lock, flags);
1718         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1719         spin_unlock_irqrestore(&chip->reg_lock, flags);
1720         if (invert)
1721                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1722         return 0;
1723 }
1724
1725 int snd_cs4231_put_single(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 reg = kcontrol->private_value & 0xff;
1730         int shift = (kcontrol->private_value >> 8) & 0xff;
1731         int mask = (kcontrol->private_value >> 16) & 0xff;
1732         int invert = (kcontrol->private_value >> 24) & 0xff;
1733         int change;
1734         unsigned short val;
1735
1736         val = (ucontrol->value.integer.value[0] & mask);
1737         if (invert)
1738                 val = mask - val;
1739         val <<= shift;
1740         spin_lock_irqsave(&chip->reg_lock, flags);
1741         val = (chip->image[reg] & ~(mask << shift)) | val;
1742         change = val != chip->image[reg];
1743         snd_cs4231_out(chip, reg, val);
1744         spin_unlock_irqrestore(&chip->reg_lock, flags);
1745         return change;
1746 }
1747
1748 int snd_cs4231_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1749 {
1750         int mask = (kcontrol->private_value >> 24) & 0xff;
1751
1752         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1753         uinfo->count = 2;
1754         uinfo->value.integer.min = 0;
1755         uinfo->value.integer.max = mask;
1756         return 0;
1757 }
1758
1759 int snd_cs4231_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1760 {
1761         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1762         unsigned long flags;
1763         int left_reg = kcontrol->private_value & 0xff;
1764         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1765         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1766         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1767         int mask = (kcontrol->private_value >> 24) & 0xff;
1768         int invert = (kcontrol->private_value >> 22) & 1;
1769
1770         spin_lock_irqsave(&chip->reg_lock, flags);
1771         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1772         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1773         spin_unlock_irqrestore(&chip->reg_lock, flags);
1774         if (invert) {
1775                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1776                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1777         }
1778         return 0;
1779 }
1780
1781 int snd_cs4231_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1782 {
1783         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1784         unsigned long flags;
1785         int left_reg = kcontrol->private_value & 0xff;
1786         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1787         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1788         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1789         int mask = (kcontrol->private_value >> 24) & 0xff;
1790         int invert = (kcontrol->private_value >> 22) & 1;
1791         int change;
1792         unsigned short val1, val2;
1793
1794         val1 = ucontrol->value.integer.value[0] & mask;
1795         val2 = ucontrol->value.integer.value[1] & mask;
1796         if (invert) {
1797                 val1 = mask - val1;
1798                 val2 = mask - val2;
1799         }
1800         val1 <<= shift_left;
1801         val2 <<= shift_right;
1802         spin_lock_irqsave(&chip->reg_lock, flags);
1803         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1804         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1805         change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1806         snd_cs4231_out(chip, left_reg, val1);
1807         snd_cs4231_out(chip, right_reg, val2);
1808         spin_unlock_irqrestore(&chip->reg_lock, flags);
1809         return change;
1810 }
1811
1812 static struct snd_kcontrol_new snd_cs4231_controls[] = {
1813 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1814 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1815 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1816 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1817 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1818 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1819 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1820 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1821 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1822 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1823 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1824 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1825 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1826 {
1827         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1828         .name = "Capture Source",
1829         .info = snd_cs4231_info_mux,
1830         .get = snd_cs4231_get_mux,
1831         .put = snd_cs4231_put_mux,
1832 },
1833 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1834 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1835 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1)
1836 };
1837
1838 static struct snd_kcontrol_new snd_opti93x_controls[] = {
1839 CS4231_DOUBLE("Master Playback Switch", 0,
1840               OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 7, 7, 1, 1),
1841 CS4231_DOUBLE("Master Playback Volume", 0,
1842               OPTi93X_OUT_LEFT, OPTi93X_OUT_RIGHT, 1, 1, 31, 1),
1843 CS4231_DOUBLE("PCM Playback Switch", 0,
1844               CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1845 CS4231_DOUBLE("PCM Playback Volume", 0,
1846               CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 31, 1),
1847 CS4231_DOUBLE("FM Playback Switch", 0,
1848               CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1849 CS4231_DOUBLE("FM Playback Volume", 0,
1850               CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 1, 1, 15, 1),
1851 CS4231_DOUBLE("Line Playback Switch", 0,
1852               CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1853 CS4231_DOUBLE("Line Playback Volume", 0,
1854               CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 15, 1),
1855 CS4231_DOUBLE("Mic Playback Switch", 0,
1856               OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 7, 7, 1, 1),
1857 CS4231_DOUBLE("Mic Playback Volume", 0,
1858               OPTi93X_MIC_LEFT_INPUT, OPTi93X_MIC_RIGHT_INPUT, 1, 1, 15, 1),
1859 CS4231_DOUBLE("Mic Boost", 0,
1860               CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1861 CS4231_DOUBLE("CD Playback Switch", 0,
1862               CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1863 CS4231_DOUBLE("CD Playback Volume", 0,
1864               CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 1, 1, 15, 1),
1865 CS4231_DOUBLE("Aux Playback Switch", 0,
1866               OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 7, 7, 1, 1),
1867 CS4231_DOUBLE("Aux Playback Volume", 0,
1868               OPTi931_AUX_LEFT_INPUT, OPTi931_AUX_RIGHT_INPUT, 1, 1, 15, 1),
1869 CS4231_DOUBLE("Capture Volume", 0,
1870               CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1871 {
1872         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1873         .name = "Capture Source",
1874         .info = snd_cs4231_info_mux,
1875         .get = snd_cs4231_get_mux,
1876         .put = snd_cs4231_put_mux,
1877 }
1878 };
1879
1880 int snd_cs4231_mixer(struct snd_cs4231 *chip)
1881 {
1882         struct snd_card *card;
1883         unsigned int idx;
1884         int err;
1885
1886         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1887
1888         card = chip->card;
1889
1890         strcpy(card->mixername, chip->pcm->name);
1891
1892         if (chip->hardware == CS4231_HW_OPTI93X)
1893                 for (idx = 0; idx < ARRAY_SIZE(snd_opti93x_controls); idx++) {
1894                         err = snd_ctl_add(card,
1895                                         snd_ctl_new1(&snd_opti93x_controls[idx],
1896                                                      chip));
1897                         if (err < 0)
1898                                 return err;
1899                 }
1900         else
1901                 for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1902                         err = snd_ctl_add(card,
1903                                         snd_ctl_new1(&snd_cs4231_controls[idx],
1904                                                      chip));
1905                         if (err < 0)
1906                                 return err;
1907                 }
1908         return 0;
1909 }
1910
1911 EXPORT_SYMBOL(snd_cs4231_out);
1912 EXPORT_SYMBOL(snd_cs4231_in);
1913 EXPORT_SYMBOL(snd_cs4236_ext_out);
1914 EXPORT_SYMBOL(snd_cs4236_ext_in);
1915 EXPORT_SYMBOL(snd_cs4231_mce_up);
1916 EXPORT_SYMBOL(snd_cs4231_mce_down);
1917 EXPORT_SYMBOL(snd_cs4231_overrange);
1918 EXPORT_SYMBOL(snd_cs4231_interrupt);
1919 EXPORT_SYMBOL(snd_cs4231_chip_id);
1920 EXPORT_SYMBOL(snd_cs4231_create);
1921 EXPORT_SYMBOL(snd_cs4231_pcm);
1922 EXPORT_SYMBOL(snd_cs4231_mixer);
1923 EXPORT_SYMBOL(snd_cs4231_timer);
1924 EXPORT_SYMBOL(snd_cs4231_info_single);
1925 EXPORT_SYMBOL(snd_cs4231_get_single);
1926 EXPORT_SYMBOL(snd_cs4231_put_single);
1927 EXPORT_SYMBOL(snd_cs4231_info_double);
1928 EXPORT_SYMBOL(snd_cs4231_get_double);
1929 EXPORT_SYMBOL(snd_cs4231_put_double);
1930
1931 /*
1932  *  INIT part
1933  */
1934
1935 static int __init alsa_cs4231_init(void)
1936 {
1937         return 0;
1938 }
1939
1940 static void __exit alsa_cs4231_exit(void)
1941 {
1942 }
1943
1944 module_init(alsa_cs4231_init)
1945 module_exit(alsa_cs4231_exit)