sound/sparc/cs4231.c

   1 /*
   2  * Driver for CS4231 sound chips found on Sparcs.
   3  * Copyright (C) 2002 David S. Miller <davem@redhat.com>
   4  *
   5  * Based entirely upon drivers/sbus/audio/cs4231.c which is:
   6  * Copyright (C) 1996, 1997, 1998 Derrick J Brashear (shadow@andrew.cmu.edu)
   7  * and also sound/isa/cs423x/cs4231_lib.c which is:
   8  * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/kernel.h>
  13 #include <linux/slab.h>
  14 #include <linux/delay.h>
  15 #include <linux/init.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/moduleparam.h>
  18 #include <linux/irq.h>
  19 #include <linux/io.h>
  20
  21
  22 #include <sound/core.h>
  23 #include <sound/pcm.h>
  24 #include <sound/info.h>
  25 #include <sound/control.h>
  26 #include <sound/timer.h>
  27 #include <sound/initval.h>
  28 #include <sound/pcm_params.h>
  29
  30 #ifdef CONFIG_SBUS
  31 #define SBUS_SUPPORT
  32 #include <asm/sbus.h>
  33 #endif
  34
  35 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
  36 #define EBUS_SUPPORT
  37 #include <linux/pci.h>
  38 #include <asm/ebus.h>
  39 #endif
  40
  41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  43 /* Enable this card */
  44 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  45
  46 module_param_array(index, int, NULL, 0444);
  47 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
  48 module_param_array(id, charp, NULL, 0444);
  49 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
  50 module_param_array(enable, bool, NULL, 0444);
  51 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
  52 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
  53 MODULE_DESCRIPTION("Sun CS4231");
  54 MODULE_LICENSE("GPL");
  55 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
  56
  57 #ifdef SBUS_SUPPORT
  58 struct sbus_dma_info {
  59        spinlock_t       lock;   /* DMA access lock */
  60        int              dir;
  61        void __iomem     *regs;
  62 };
  63 #endif
  64
  65 struct snd_cs4231;
  66 struct cs4231_dma_control {
  67         void            (*prepare)(struct cs4231_dma_control *dma_cont,
  68                                    int dir);
  69         void            (*enable)(struct cs4231_dma_control *dma_cont, int on);
  70         int             (*request)(struct cs4231_dma_control *dma_cont,
  71                                    dma_addr_t bus_addr, size_t len);
  72         unsigned int    (*address)(struct cs4231_dma_control *dma_cont);
  73         void            (*preallocate)(struct snd_cs4231 *chip,
  74                                        struct snd_pcm *pcm);
  75 #ifdef EBUS_SUPPORT
  76         struct          ebus_dma_info   ebus_info;
  77 #endif
  78 #ifdef SBUS_SUPPORT
  79         struct          sbus_dma_info   sbus_info;
  80 #endif
  81 };
  82
  83 struct snd_cs4231 {
  84         spinlock_t              lock;   /* registers access lock */
  85         void __iomem            *port;
  86
  87         struct cs4231_dma_control       p_dma;
  88         struct cs4231_dma_control       c_dma;
  89
  90         u32                     flags;
  91 #define CS4231_FLAG_EBUS        0x00000001
  92 #define CS4231_FLAG_PLAYBACK    0x00000002
  93 #define CS4231_FLAG_CAPTURE     0x00000004
  94
  95         struct snd_card         *card;
  96         struct snd_pcm          *pcm;
  97         struct snd_pcm_substream        *playback_substream;
  98         unsigned int            p_periods_sent;
  99         struct snd_pcm_substream        *capture_substream;
 100         unsigned int            c_periods_sent;
 101         struct snd_timer        *timer;
 102
 103         unsigned short mode;
 104 #define CS4231_MODE_NONE        0x0000
 105 #define CS4231_MODE_PLAY        0x0001
 106 #define CS4231_MODE_RECORD      0x0002
 107 #define CS4231_MODE_TIMER       0x0004
 108 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
 109                                  CS4231_MODE_TIMER)
 110
 111         unsigned char           image[32];      /* registers image */
 112         int                     mce_bit;
 113         int                     calibrate_mute;
 114         struct mutex            mce_mutex;      /* mutex for mce register */
 115         struct mutex            open_mutex;     /* mutex for ALSA open/close */
 116
 117         union {
 118 #ifdef SBUS_SUPPORT
 119                 struct sbus_dev         *sdev;
 120 #endif
 121 #ifdef EBUS_SUPPORT
 122                 struct pci_dev          *pdev;
 123 #endif
 124         } dev_u;
 125         unsigned int            irq[2];
 126         unsigned int            regs_size;
 127         struct snd_cs4231       *next;
 128 };
 129
 130 static struct snd_cs4231 *cs4231_list;
 131
 132 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
 133  * now....  -DaveM
 134  */
 135
 136 /* IO ports */
 137 #include <sound/cs4231-regs.h>
 138
 139 /* XXX offsets are different than PC ISA chips... */
 140 #define CS4231U(chip, x)        ((chip)->port + ((c_d_c_CS4231##x) << 2))
 141
 142 /* SBUS DMA register defines.  */
 143
 144 #define APCCSR  0x10UL  /* APC DMA CSR */
 145 #define APCCVA  0x20UL  /* APC Capture DMA Address */
 146 #define APCCC   0x24UL  /* APC Capture Count */
 147 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
 148 #define APCCNC  0x2cUL  /* APC Capture Next Count */
 149 #define APCPVA  0x30UL  /* APC Play DMA Address */
 150 #define APCPC   0x34UL  /* APC Play Count */
 151 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
 152 #define APCPNC  0x3cUL  /* APC Play Next Count */
 153
 154 /* Defines for SBUS DMA-routines */
 155
 156 #define APCVA  0x0UL    /* APC DMA Address */
 157 #define APCC   0x4UL    /* APC Count */
 158 #define APCNVA 0x8UL    /* APC DMA Next Address */
 159 #define APCNC  0xcUL    /* APC Next Count */
 160 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
 161 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
 162
 163 /* APCCSR bits */
 164
 165 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
 166 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
 167 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
 168 #define APC_GENL_INT    0x100000 /* General interrupt */
 169 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
 170 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
 171 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
 172 #define APC_XINT_GENL   0x10000  /* Error ext intr */
 173 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
 174 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
 175 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
 176 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
 177 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
 178 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
 179 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
 180 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
 181 #define APC_PPAUSE      0x80     /* Pause the play DMA */
 182 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
 183 #define APC_CDC_RESET   0x20     /* CODEC RESET */
 184 #define APC_PDMA_READY  0x08     /* Play DMA Go */
 185 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
 186 #define APC_CHIP_RESET  0x01     /* Reset the chip */
 187
 188 /* EBUS DMA register offsets  */
 189
 190 #define EBDMA_CSR       0x00UL  /* Control/Status */
 191 #define EBDMA_ADDR      0x04UL  /* DMA Address */
 192 #define EBDMA_COUNT     0x08UL  /* DMA Count */
 193
 194 /*
 195  *  Some variables
 196  */
 197
 198 static unsigned char freq_bits[14] = {
 199         /* 5510 */      0x00 | CS4231_XTAL2,
 200         /* 6620 */      0x0E | CS4231_XTAL2,
 201         /* 8000 */      0x00 | CS4231_XTAL1,
 202         /* 9600 */      0x0E | CS4231_XTAL1,
 203         /* 11025 */     0x02 | CS4231_XTAL2,
 204         /* 16000 */     0x02 | CS4231_XTAL1,
 205         /* 18900 */     0x04 | CS4231_XTAL2,
 206         /* 22050 */     0x06 | CS4231_XTAL2,
 207         /* 27042 */     0x04 | CS4231_XTAL1,
 208         /* 32000 */     0x06 | CS4231_XTAL1,
 209         /* 33075 */     0x0C | CS4231_XTAL2,
 210         /* 37800 */     0x08 | CS4231_XTAL2,
 211         /* 44100 */     0x0A | CS4231_XTAL2,
 212         /* 48000 */     0x0C | CS4231_XTAL1
 213 };
 214
 215 static unsigned int rates[14] = {
 216         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
 217         27042, 32000, 33075, 37800, 44100, 48000
 218 };
 219
 220 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 221         .count  = ARRAY_SIZE(rates),
 222         .list   = rates,
 223 };
 224
 225 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
 226 {
 227         return snd_pcm_hw_constraint_list(runtime, 0,
 228                                           SNDRV_PCM_HW_PARAM_RATE,
 229                                           &hw_constraints_rates);
 230 }
 231
 232 static unsigned char snd_cs4231_original_image[32] =
 233 {
 234         0x00,                   /* 00/00 - lic */
 235         0x00,                   /* 01/01 - ric */
 236         0x9f,                   /* 02/02 - la1ic */
 237         0x9f,                   /* 03/03 - ra1ic */
 238         0x9f,                   /* 04/04 - la2ic */
 239         0x9f,                   /* 05/05 - ra2ic */
 240         0xbf,                   /* 06/06 - loc */
 241         0xbf,                   /* 07/07 - roc */
 242         0x20,                   /* 08/08 - pdfr */
 243         CS4231_AUTOCALIB,       /* 09/09 - ic */
 244         0x00,                   /* 0a/10 - pc */
 245         0x00,                   /* 0b/11 - ti */
 246         CS4231_MODE2,           /* 0c/12 - mi */
 247         0x00,                   /* 0d/13 - lbc */
 248         0x00,                   /* 0e/14 - pbru */
 249         0x00,                   /* 0f/15 - pbrl */
 250         0x80,                   /* 10/16 - afei */
 251         0x01,                   /* 11/17 - afeii */
 252         0x9f,                   /* 12/18 - llic */
 253         0x9f,                   /* 13/19 - rlic */
 254         0x00,                   /* 14/20 - tlb */
 255         0x00,                   /* 15/21 - thb */
 256         0x00,                   /* 16/22 - la3mic/reserved */
 257         0x00,                   /* 17/23 - ra3mic/reserved */
 258         0x00,                   /* 18/24 - afs */
 259         0x00,                   /* 19/25 - lamoc/version */
 260         0x00,                   /* 1a/26 - mioc */
 261         0x00,                   /* 1b/27 - ramoc/reserved */
 262         0x20,                   /* 1c/28 - cdfr */
 263         0x00,                   /* 1d/29 - res4 */
 264         0x00,                   /* 1e/30 - cbru */
 265         0x00,                   /* 1f/31 - cbrl */
 266 };
 267
 268 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
 269 {
 270 #ifdef EBUS_SUPPORT
 271         if (cp->flags & CS4231_FLAG_EBUS)
 272                 return readb(reg_addr);
 273         else
 274 #endif
 275 #ifdef SBUS_SUPPORT
 276                 return sbus_readb(reg_addr);
 277 #endif
 278 }
 279
 280 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
 281                             void __iomem *reg_addr)
 282 {
 283 #ifdef EBUS_SUPPORT
 284         if (cp->flags & CS4231_FLAG_EBUS)
 285                 return writeb(val, reg_addr);
 286         else
 287 #endif
 288 #ifdef SBUS_SUPPORT
 289                 return sbus_writeb(val, reg_addr);
 290 #endif
 291 }
 292
 293 /*
 294  *  Basic I/O functions
 295  */
 296
 297 static void snd_cs4231_ready(struct snd_cs4231 *chip)
 298 {
 299         int timeout;
 300
 301         for (timeout = 250; timeout > 0; timeout--) {
 302                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 303                 if ((val & CS4231_INIT) == 0)
 304                         break;
 305                 udelay(100);
 306         }
 307 }
 308
 309 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
 310                             unsigned char value)
 311 {
 312         snd_cs4231_ready(chip);
 313 #ifdef CONFIG_SND_DEBUG
 314         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 315                 snd_printdd("out: auto calibration time out - reg = 0x%x, "
 316                             "value = 0x%x\n",
 317                             reg, value);
 318 #endif
 319         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 320         wmb();
 321         __cs4231_writeb(chip, value, CS4231U(chip, REG));
 322         mb();
 323 }
 324
 325 static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
 326                      unsigned char mask, unsigned char value)
 327 {
 328         unsigned char tmp = (chip->image[reg] & mask) | value;
 329
 330         chip->image[reg] = tmp;
 331         if (!chip->calibrate_mute)
 332                 snd_cs4231_dout(chip, reg, tmp);
 333 }
 334
 335 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
 336                            unsigned char value)
 337 {
 338         snd_cs4231_dout(chip, reg, value);
 339         chip->image[reg] = value;
 340         mb();
 341 }
 342
 343 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
 344 {
 345         snd_cs4231_ready(chip);
 346 #ifdef CONFIG_SND_DEBUG
 347         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 348                 snd_printdd("in: auto calibration time out - reg = 0x%x\n",
 349                             reg);
 350 #endif
 351         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 352         mb();
 353         return __cs4231_readb(chip, CS4231U(chip, REG));
 354 }
 355
 356 /*
 357  *  CS4231 detection / MCE routines
 358  */
 359
 360 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 361 {
 362         int timeout;
 363
 364         /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
 365         for (timeout = 5; timeout > 0; timeout--)
 366                 __cs4231_readb(chip, CS4231U(chip, REGSEL));
 367
 368         /* end of cleanup sequence */
 369         for (timeout = 500; timeout > 0; timeout--) {
 370                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 371                 if ((val & CS4231_INIT) == 0)
 372                         break;
 373                 msleep(1);
 374         }
 375 }
 376
 377 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 378 {
 379         unsigned long flags;
 380         int timeout;
 381
 382         spin_lock_irqsave(&chip->lock, flags);
 383         snd_cs4231_ready(chip);
 384 #ifdef CONFIG_SND_DEBUG
 385         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 386                 snd_printdd("mce_up - auto calibration time out (0)\n");
 387 #endif
 388         chip->mce_bit |= CS4231_MCE;
 389         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 390         if (timeout == 0x80)
 391                 snd_printdd("mce_up [%p]: serious init problem - "
 392                             "codec still busy\n",
 393                             chip->port);
 394         if (!(timeout & CS4231_MCE))
 395                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
 396                                 CS4231U(chip, REGSEL));
 397         spin_unlock_irqrestore(&chip->lock, flags);
 398 }
 399
 400 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 401 {
 402         unsigned long flags, timeout;
 403         int reg;
 404
 405         snd_cs4231_busy_wait(chip);
 406         spin_lock_irqsave(&chip->lock, flags);
 407 #ifdef CONFIG_SND_DEBUG
 408         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 409                 snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
 410                             CS4231U(chip, REGSEL));
 411 #endif
 412         chip->mce_bit &= ~CS4231_MCE;
 413         reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 414         __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
 415                         CS4231U(chip, REGSEL));
 416         if (reg == 0x80)
 417                 snd_printdd("mce_down [%p]: serious init problem "
 418                             "- codec still busy\n", chip->port);
 419         if ((reg & CS4231_MCE) == 0) {
 420                 spin_unlock_irqrestore(&chip->lock, flags);
 421                 return;
 422         }
 423
 424         /*
 425          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 426          */
 427         timeout = jiffies + msecs_to_jiffies(250);
 428         do {
 429                 spin_unlock_irqrestore(&chip->lock, flags);
 430                 msleep(1);
 431                 spin_lock_irqsave(&chip->lock, flags);
 432                 reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
 433                 reg &= CS4231_CALIB_IN_PROGRESS;
 434         } while (reg && time_before(jiffies, timeout));
 435         spin_unlock_irqrestore(&chip->lock, flags);
 436
 437         if (reg)
 438                 snd_printk(KERN_ERR
 439                            "mce_down - auto calibration time out (2)\n");
 440 }
 441
 442 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
 443                                    struct snd_pcm_substream *substream,
 444                                    unsigned int *periods_sent)
 445 {
 446         struct snd_pcm_runtime *runtime = substream->runtime;
 447
 448         while (1) {
 449                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
 450                 unsigned int offset = period_size * (*periods_sent);
 451
 452                 BUG_ON(period_size >= (1 << 24));
 453
 454                 if (dma_cont->request(dma_cont,
 455                                       runtime->dma_addr + offset, period_size))
 456                         return;
 457                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 458         }
 459 }
 460
 461 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
 462                                unsigned int what, int on)
 463 {
 464         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 465         struct cs4231_dma_control *dma_cont;
 466
 467         if (what & CS4231_PLAYBACK_ENABLE) {
 468                 dma_cont = &chip->p_dma;
 469                 if (on) {
 470                         dma_cont->prepare(dma_cont, 0);
 471                         dma_cont->enable(dma_cont, 1);
 472                         snd_cs4231_advance_dma(dma_cont,
 473                                 chip->playback_substream,
 474                                 &chip->p_periods_sent);
 475                 } else {
 476                         dma_cont->enable(dma_cont, 0);
 477                 }
 478         }
 479         if (what & CS4231_RECORD_ENABLE) {
 480                 dma_cont = &chip->c_dma;
 481                 if (on) {
 482                         dma_cont->prepare(dma_cont, 1);
 483                         dma_cont->enable(dma_cont, 1);
 484                         snd_cs4231_advance_dma(dma_cont,
 485                                 chip->capture_substream,
 486                                 &chip->c_periods_sent);
 487                 } else {
 488                         dma_cont->enable(dma_cont, 0);
 489                 }
 490         }
 491 }
 492
 493 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
 494 {
 495         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 496         int result = 0;
 497
 498         switch (cmd) {
 499         case SNDRV_PCM_TRIGGER_START:
 500         case SNDRV_PCM_TRIGGER_STOP:
 501         {
 502                 unsigned int what = 0;
 503                 struct snd_pcm_substream *s;
 504                 unsigned long flags;
 505
 506                 snd_pcm_group_for_each_entry(s, substream) {
 507                         if (s == chip->playback_substream) {
 508                                 what |= CS4231_PLAYBACK_ENABLE;
 509                                 snd_pcm_trigger_done(s, substream);
 510                         } else if (s == chip->capture_substream) {
 511                                 what |= CS4231_RECORD_ENABLE;
 512                                 snd_pcm_trigger_done(s, substream);
 513                         }
 514                 }
 515
 516                 spin_lock_irqsave(&chip->lock, flags);
 517                 if (cmd == SNDRV_PCM_TRIGGER_START) {
 518                         cs4231_dma_trigger(substream, what, 1);
 519                         chip->image[CS4231_IFACE_CTRL] |= what;
 520                 } else {
 521                         cs4231_dma_trigger(substream, what, 0);
 522                         chip->image[CS4231_IFACE_CTRL] &= ~what;
 523                 }
 524                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 525                                chip->image[CS4231_IFACE_CTRL]);
 526                 spin_unlock_irqrestore(&chip->lock, flags);
 527                 break;
 528         }
 529         default:
 530                 result = -EINVAL;
 531                 break;
 532         }
 533
 534         return result;
 535 }
 536
 537 /*
 538  *  CODEC I/O
 539  */
 540
 541 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 542 {
 543         int i;
 544
 545         for (i = 0; i < 14; i++)
 546                 if (rate == rates[i])
 547                         return freq_bits[i];
 548
 549         return freq_bits[13];
 550 }
 551
 552 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
 553                                            int channels)
 554 {
 555         unsigned char rformat;
 556
 557         rformat = CS4231_LINEAR_8;
 558         switch (format) {
 559         case SNDRV_PCM_FORMAT_MU_LAW:
 560                 rformat = CS4231_ULAW_8;
 561                 break;
 562         case SNDRV_PCM_FORMAT_A_LAW:
 563                 rformat = CS4231_ALAW_8;
 564                 break;
 565         case SNDRV_PCM_FORMAT_S16_LE:
 566                 rformat = CS4231_LINEAR_16;
 567                 break;
 568         case SNDRV_PCM_FORMAT_S16_BE:
 569                 rformat = CS4231_LINEAR_16_BIG;
 570                 break;
 571         case SNDRV_PCM_FORMAT_IMA_ADPCM:
 572                 rformat = CS4231_ADPCM_16;
 573                 break;
 574         }
 575         if (channels > 1)
 576                 rformat |= CS4231_STEREO;
 577         return rformat;
 578 }
 579
 580 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 581 {
 582         unsigned long flags;
 583
 584         mute = mute ? 1 : 0;
 585         spin_lock_irqsave(&chip->lock, flags);
 586         if (chip->calibrate_mute == mute) {
 587                 spin_unlock_irqrestore(&chip->lock, flags);
 588                 return;
 589         }
 590         if (!mute) {
 591                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 592                                 chip->image[CS4231_LEFT_INPUT]);
 593                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 594                                 chip->image[CS4231_RIGHT_INPUT]);
 595                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
 596                                 chip->image[CS4231_LOOPBACK]);
 597         }
 598         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 599                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 600         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 601                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 602         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 603                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 604         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 605                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 606         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 607                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 608         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 609                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 610         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 611                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 612         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 613                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 614         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 615                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 616         chip->calibrate_mute = mute;
 617         spin_unlock_irqrestore(&chip->lock, flags);
 618 }
 619
 620 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 621                                        struct snd_pcm_hw_params *params,
 622                                        unsigned char pdfr)
 623 {
 624         unsigned long flags;
 625
 626         mutex_lock(&chip->mce_mutex);
 627         snd_cs4231_calibrate_mute(chip, 1);
 628
 629         snd_cs4231_mce_up(chip);
 630
 631         spin_lock_irqsave(&chip->lock, flags);
 632         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 633                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 634                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 635                        pdfr);
 636         spin_unlock_irqrestore(&chip->lock, flags);
 637
 638         snd_cs4231_mce_down(chip);
 639
 640         snd_cs4231_calibrate_mute(chip, 0);
 641         mutex_unlock(&chip->mce_mutex);
 642 }
 643
 644 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 645                                       struct snd_pcm_hw_params *params,
 646                                       unsigned char cdfr)
 647 {
 648         unsigned long flags;
 649
 650         mutex_lock(&chip->mce_mutex);
 651         snd_cs4231_calibrate_mute(chip, 1);
 652
 653         snd_cs4231_mce_up(chip);
 654
 655         spin_lock_irqsave(&chip->lock, flags);
 656         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 657                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 658                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 659                                (cdfr & 0x0f));
 660                 spin_unlock_irqrestore(&chip->lock, flags);
 661                 snd_cs4231_mce_down(chip);
 662                 snd_cs4231_mce_up(chip);
 663                 spin_lock_irqsave(&chip->lock, flags);
 664         }
 665         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 666         spin_unlock_irqrestore(&chip->lock, flags);
 667
 668         snd_cs4231_mce_down(chip);
 669
 670         snd_cs4231_calibrate_mute(chip, 0);
 671         mutex_unlock(&chip->mce_mutex);
 672 }
 673
 674 /*
 675  *  Timer interface
 676  */
 677
 678 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
 679 {
 680         struct snd_cs4231 *chip = snd_timer_chip(timer);
 681
 682         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 683 }
 684
 685 static int snd_cs4231_timer_start(struct snd_timer *timer)
 686 {
 687         unsigned long flags;
 688         unsigned int ticks;
 689         struct snd_cs4231 *chip = snd_timer_chip(timer);
 690
 691         spin_lock_irqsave(&chip->lock, flags);
 692         ticks = timer->sticks;
 693         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 694             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 695             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 696                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 697                                chip->image[CS4231_TIMER_HIGH] =
 698                                (unsigned char) (ticks >> 8));
 699                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
 700                                chip->image[CS4231_TIMER_LOW] =
 701                                (unsigned char) ticks);
 702                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 703                                chip->image[CS4231_ALT_FEATURE_1] |
 704                                         CS4231_TIMER_ENABLE);
 705         }
 706         spin_unlock_irqrestore(&chip->lock, flags);
 707
 708         return 0;
 709 }
 710
 711 static int snd_cs4231_timer_stop(struct snd_timer *timer)
 712 {
 713         unsigned long flags;
 714         struct snd_cs4231 *chip = snd_timer_chip(timer);
 715
 716         spin_lock_irqsave(&chip->lock, flags);
 717         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
 718         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 719                        chip->image[CS4231_ALT_FEATURE_1]);
 720         spin_unlock_irqrestore(&chip->lock, flags);
 721
 722         return 0;
 723 }
 724
 725 static void __init snd_cs4231_init(struct snd_cs4231 *chip)
 726 {
 727         unsigned long flags;
 728
 729         snd_cs4231_mce_down(chip);
 730
 731 #ifdef SNDRV_DEBUG_MCE
 732         snd_printdd("init: (1)\n");
 733 #endif
 734         snd_cs4231_mce_up(chip);
 735         spin_lock_irqsave(&chip->lock, flags);
 736         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 737                                             CS4231_PLAYBACK_PIO |
 738                                             CS4231_RECORD_ENABLE |
 739                                             CS4231_RECORD_PIO |
 740                                             CS4231_CALIB_MODE);
 741         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 742         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 743         spin_unlock_irqrestore(&chip->lock, flags);
 744         snd_cs4231_mce_down(chip);
 745
 746 #ifdef SNDRV_DEBUG_MCE
 747         snd_printdd("init: (2)\n");
 748 #endif
 749
 750         snd_cs4231_mce_up(chip);
 751         spin_lock_irqsave(&chip->lock, flags);
 752         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 753                         chip->image[CS4231_ALT_FEATURE_1]);
 754         spin_unlock_irqrestore(&chip->lock, flags);
 755         snd_cs4231_mce_down(chip);
 756
 757 #ifdef SNDRV_DEBUG_MCE
 758         snd_printdd("init: (3) - afei = 0x%x\n",
 759                     chip->image[CS4231_ALT_FEATURE_1]);
 760 #endif
 761
 762         spin_lock_irqsave(&chip->lock, flags);
 763         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
 764                         chip->image[CS4231_ALT_FEATURE_2]);
 765         spin_unlock_irqrestore(&chip->lock, flags);
 766
 767         snd_cs4231_mce_up(chip);
 768         spin_lock_irqsave(&chip->lock, flags);
 769         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 770                         chip->image[CS4231_PLAYBK_FORMAT]);
 771         spin_unlock_irqrestore(&chip->lock, flags);
 772         snd_cs4231_mce_down(chip);
 773
 774 #ifdef SNDRV_DEBUG_MCE
 775         snd_printdd("init: (4)\n");
 776 #endif
 777
 778         snd_cs4231_mce_up(chip);
 779         spin_lock_irqsave(&chip->lock, flags);
 780         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 781         spin_unlock_irqrestore(&chip->lock, flags);
 782         snd_cs4231_mce_down(chip);
 783
 784 #ifdef SNDRV_DEBUG_MCE
 785         snd_printdd("init: (5)\n");
 786 #endif
 787 }
 788
 789 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 790 {
 791         unsigned long flags;
 792
 793         mutex_lock(&chip->open_mutex);
 794         if ((chip->mode & mode)) {
 795                 mutex_unlock(&chip->open_mutex);
 796                 return -EAGAIN;
 797         }
 798         if (chip->mode & CS4231_MODE_OPEN) {
 799                 chip->mode |= mode;
 800                 mutex_unlock(&chip->open_mutex);
 801                 return 0;
 802         }
 803         /* ok. now enable and ack CODEC IRQ */
 804         spin_lock_irqsave(&chip->lock, flags);
 805         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 806                        CS4231_RECORD_IRQ |
 807                        CS4231_TIMER_IRQ);
 808         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 809         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 810         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 811
 812         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 813                        CS4231_RECORD_IRQ |
 814                        CS4231_TIMER_IRQ);
 815         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 816
 817         spin_unlock_irqrestore(&chip->lock, flags);
 818
 819         chip->mode = mode;
 820         mutex_unlock(&chip->open_mutex);
 821         return 0;
 822 }
 823
 824 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 825 {
 826         unsigned long flags;
 827
 828         mutex_lock(&chip->open_mutex);
 829         chip->mode &= ~mode;
 830         if (chip->mode & CS4231_MODE_OPEN) {
 831                 mutex_unlock(&chip->open_mutex);
 832                 return;
 833         }
 834         snd_cs4231_calibrate_mute(chip, 1);
 835
 836         /* disable IRQ */
 837         spin_lock_irqsave(&chip->lock, flags);
 838         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 839         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 840         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 841
 842         /* now disable record & playback */
 843
 844         if (chip->image[CS4231_IFACE_CTRL] &
 845             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 846              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 847                 spin_unlock_irqrestore(&chip->lock, flags);
 848                 snd_cs4231_mce_up(chip);
 849                 spin_lock_irqsave(&chip->lock, flags);
 850                 chip->image[CS4231_IFACE_CTRL] &=
 851                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 852                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 853                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 854                                 chip->image[CS4231_IFACE_CTRL]);
 855                 spin_unlock_irqrestore(&chip->lock, flags);
 856                 snd_cs4231_mce_down(chip);
 857                 spin_lock_irqsave(&chip->lock, flags);
 858         }
 859
 860         /* clear IRQ again */
 861         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 862         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 863         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 864         spin_unlock_irqrestore(&chip->lock, flags);
 865
 866         snd_cs4231_calibrate_mute(chip, 0);
 867
 868         chip->mode = 0;
 869         mutex_unlock(&chip->open_mutex);
 870 }
 871
 872 /*
 873  *  timer open/close
 874  */
 875
 876 static int snd_cs4231_timer_open(struct snd_timer *timer)
 877 {
 878         struct snd_cs4231 *chip = snd_timer_chip(timer);
 879         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 880         return 0;
 881 }
 882
 883 static int snd_cs4231_timer_close(struct snd_timer *timer)
 884 {
 885         struct snd_cs4231 *chip = snd_timer_chip(timer);
 886         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 887         return 0;
 888 }
 889
 890 static struct snd_timer_hardware snd_cs4231_timer_table = {
 891         .flags          =       SNDRV_TIMER_HW_AUTO,
 892         .resolution     =       9945,
 893         .ticks          =       65535,
 894         .open           =       snd_cs4231_timer_open,
 895         .close          =       snd_cs4231_timer_close,
 896         .c_resolution   =       snd_cs4231_timer_resolution,
 897         .start          =       snd_cs4231_timer_start,
 898         .stop           =       snd_cs4231_timer_stop,
 899 };
 900
 901 /*
 902  *  ok.. exported functions..
 903  */
 904
 905 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 906                                          struct snd_pcm_hw_params *hw_params)
 907 {
 908         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 909         unsigned char new_pdfr;
 910         int err;
 911
 912         err = snd_pcm_lib_malloc_pages(substream,
 913                                         params_buffer_bytes(hw_params));
 914         if (err < 0)
 915                 return err;
 916         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 917                                          params_channels(hw_params)) |
 918                 snd_cs4231_get_rate(params_rate(hw_params));
 919         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
 920
 921         return 0;
 922 }
 923
 924 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 925 {
 926         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 927         struct snd_pcm_runtime *runtime = substream->runtime;
 928         unsigned long flags;
 929
 930         spin_lock_irqsave(&chip->lock, flags);
 931
 932         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 933                                             CS4231_PLAYBACK_PIO);
 934
 935         BUG_ON(runtime->period_size > 0xffff + 1);
 936
 937         chip->p_periods_sent = 0;
 938         spin_unlock_irqrestore(&chip->lock, flags);
 939
 940         return 0;
 941 }
 942
 943 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 944                                         struct snd_pcm_hw_params *hw_params)
 945 {
 946         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 947         unsigned char new_cdfr;
 948         int err;
 949
 950         err = snd_pcm_lib_malloc_pages(substream,
 951                                         params_buffer_bytes(hw_params));
 952         if (err < 0)
 953                 return err;
 954         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 955                                          params_channels(hw_params)) |
 956                 snd_cs4231_get_rate(params_rate(hw_params));
 957         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
 958
 959         return 0;
 960 }
 961
 962 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 963 {
 964         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 965         unsigned long flags;
 966
 967         spin_lock_irqsave(&chip->lock, flags);
 968         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
 969                                             CS4231_RECORD_PIO);
 970
 971
 972         chip->c_periods_sent = 0;
 973         spin_unlock_irqrestore(&chip->lock, flags);
 974
 975         return 0;
 976 }
 977
 978 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 979 {
 980         unsigned long flags;
 981         unsigned char res;
 982
 983         spin_lock_irqsave(&chip->lock, flags);
 984         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 985         spin_unlock_irqrestore(&chip->lock, flags);
 986
 987         /* detect overrange only above 0dB; may be user selectable? */
 988         if (res & (0x08 | 0x02))
 989                 chip->capture_substream->runtime->overrange++;
 990 }
 991
 992 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
 993 {
 994         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
 995                 snd_pcm_period_elapsed(chip->playback_substream);
 996                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
 997                                             &chip->p_periods_sent);
 998         }
 999 }
1000
1001 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
1002 {
1003         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
1004                 snd_pcm_period_elapsed(chip->capture_substream);
1005                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
1006                                             &chip->c_periods_sent);
1007         }
1008 }
1009
1010 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
1011                                         struct snd_pcm_substream *substream)
1012 {
1013         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1014         struct cs4231_dma_control *dma_cont = &chip->p_dma;
1015         size_t ptr;
1016
1017         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1018                 return 0;
1019         ptr = dma_cont->address(dma_cont);
1020         if (ptr != 0)
1021                 ptr -= substream->runtime->dma_addr;
1022
1023         return bytes_to_frames(substream->runtime, ptr);
1024 }
1025
1026 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1027                                         struct snd_pcm_substream *substream)
1028 {
1029         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1030         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1031         size_t ptr;
1032
1033         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1034                 return 0;
1035         ptr = dma_cont->address(dma_cont);
1036         if (ptr != 0)
1037                 ptr -= substream->runtime->dma_addr;
1038
1039         return bytes_to_frames(substream->runtime, ptr);
1040 }
1041
1042 static int __init snd_cs4231_probe(struct snd_cs4231 *chip)
1043 {
1044         unsigned long flags;
1045         int i;
1046         int id = 0;
1047         int vers = 0;
1048         unsigned char *ptr;
1049
1050         for (i = 0; i < 50; i++) {
1051                 mb();
1052                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1053                         msleep(2);
1054                 else {
1055                         spin_lock_irqsave(&chip->lock, flags);
1056                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1057                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1058                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1059                         spin_unlock_irqrestore(&chip->lock, flags);
1060                         if (id == 0x0a)
1061                                 break;  /* this is valid value */
1062                 }
1063         }
1064         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1065         if (id != 0x0a)
1066                 return -ENODEV; /* no valid device found */
1067
1068         spin_lock_irqsave(&chip->lock, flags);
1069
1070         /* clear any pendings IRQ */
1071         __cs4231_readb(chip, CS4231U(chip, STATUS));
1072         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1073         mb();
1074
1075         spin_unlock_irqrestore(&chip->lock, flags);
1076
1077         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1078         chip->image[CS4231_IFACE_CTRL] =
1079                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1080         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1081         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1082         if (vers & 0x20)
1083                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1084
1085         ptr = (unsigned char *) &chip->image;
1086
1087         snd_cs4231_mce_down(chip);
1088
1089         spin_lock_irqsave(&chip->lock, flags);
1090
1091         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1092                 snd_cs4231_out(chip, i, *ptr++);
1093
1094         spin_unlock_irqrestore(&chip->lock, flags);
1095
1096         snd_cs4231_mce_up(chip);
1097
1098         snd_cs4231_mce_down(chip);
1099
1100         mdelay(2);
1101
1102         return 0;               /* all things are ok.. */
1103 }
1104
1105 static struct snd_pcm_hardware snd_cs4231_playback = {
1106         .info                   = SNDRV_PCM_INFO_MMAP |
1107                                   SNDRV_PCM_INFO_INTERLEAVED |
1108                                   SNDRV_PCM_INFO_MMAP_VALID |
1109                                   SNDRV_PCM_INFO_SYNC_START,
1110         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1111                                   SNDRV_PCM_FMTBIT_A_LAW |
1112                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1113                                   SNDRV_PCM_FMTBIT_U8 |
1114                                   SNDRV_PCM_FMTBIT_S16_LE |
1115                                   SNDRV_PCM_FMTBIT_S16_BE,
1116         .rates                  = SNDRV_PCM_RATE_KNOT |
1117                                   SNDRV_PCM_RATE_8000_48000,
1118         .rate_min               = 5510,
1119         .rate_max               = 48000,
1120         .channels_min           = 1,
1121         .channels_max           = 2,
1122         .buffer_bytes_max       = 32 * 1024,
1123         .period_bytes_min       = 64,
1124         .period_bytes_max       = 32 * 1024,
1125         .periods_min            = 1,
1126         .periods_max            = 1024,
1127 };
1128
1129 static struct snd_pcm_hardware snd_cs4231_capture = {
1130         .info                   = SNDRV_PCM_INFO_MMAP |
1131                                   SNDRV_PCM_INFO_INTERLEAVED |
1132                                   SNDRV_PCM_INFO_MMAP_VALID |
1133                                   SNDRV_PCM_INFO_SYNC_START,
1134         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1135                                   SNDRV_PCM_FMTBIT_A_LAW |
1136                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1137                                   SNDRV_PCM_FMTBIT_U8 |
1138                                   SNDRV_PCM_FMTBIT_S16_LE |
1139                                   SNDRV_PCM_FMTBIT_S16_BE,
1140         .rates                  = SNDRV_PCM_RATE_KNOT |
1141                                   SNDRV_PCM_RATE_8000_48000,
1142         .rate_min               = 5510,
1143         .rate_max               = 48000,
1144         .channels_min           = 1,
1145         .channels_max           = 2,
1146         .buffer_bytes_max       = 32 * 1024,
1147         .period_bytes_min       = 64,
1148         .period_bytes_max       = 32 * 1024,
1149         .periods_min            = 1,
1150         .periods_max            = 1024,
1151 };
1152
1153 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1154 {
1155         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1156         struct snd_pcm_runtime *runtime = substream->runtime;
1157         int err;
1158
1159         runtime->hw = snd_cs4231_playback;
1160
1161         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1162         if (err < 0) {
1163                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1164                 return err;
1165         }
1166         chip->playback_substream = substream;
1167         chip->p_periods_sent = 0;
1168         snd_pcm_set_sync(substream);
1169         snd_cs4231_xrate(runtime);
1170
1171         return 0;
1172 }
1173
1174 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1175 {
1176         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1177         struct snd_pcm_runtime *runtime = substream->runtime;
1178         int err;
1179
1180         runtime->hw = snd_cs4231_capture;
1181
1182         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1183         if (err < 0) {
1184                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1185                 return err;
1186         }
1187         chip->capture_substream = substream;
1188         chip->c_periods_sent = 0;
1189         snd_pcm_set_sync(substream);
1190         snd_cs4231_xrate(runtime);
1191
1192         return 0;
1193 }
1194
1195 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1196 {
1197         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1198
1199         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1200         chip->playback_substream = NULL;
1201
1202         return 0;
1203 }
1204
1205 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1206 {
1207         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1208
1209         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1210         chip->capture_substream = NULL;
1211
1212         return 0;
1213 }
1214
1215 /* XXX We can do some power-management, in particular on EBUS using
1216  * XXX the audio AUXIO register...
1217  */
1218
1219 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1220         .open           =       snd_cs4231_playback_open,
1221         .close          =       snd_cs4231_playback_close,
1222         .ioctl          =       snd_pcm_lib_ioctl,
1223         .hw_params      =       snd_cs4231_playback_hw_params,
1224         .hw_free        =       snd_pcm_lib_free_pages,
1225         .prepare        =       snd_cs4231_playback_prepare,
1226         .trigger        =       snd_cs4231_trigger,
1227         .pointer        =       snd_cs4231_playback_pointer,
1228 };
1229
1230 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1231         .open           =       snd_cs4231_capture_open,
1232         .close          =       snd_cs4231_capture_close,
1233         .ioctl          =       snd_pcm_lib_ioctl,
1234         .hw_params      =       snd_cs4231_capture_hw_params,
1235         .hw_free        =       snd_pcm_lib_free_pages,
1236         .prepare        =       snd_cs4231_capture_prepare,
1237         .trigger        =       snd_cs4231_trigger,
1238         .pointer        =       snd_cs4231_capture_pointer,
1239 };
1240
1241 static int __init snd_cs4231_pcm(struct snd_card *card)
1242 {
1243         struct snd_cs4231 *chip = card->private_data;
1244         struct snd_pcm *pcm;
1245         int err;
1246
1247         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1248         if (err < 0)
1249                 return err;
1250
1251         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1252                         &snd_cs4231_playback_ops);
1253         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1254                         &snd_cs4231_capture_ops);
1255
1256         /* global setup */
1257         pcm->private_data = chip;
1258         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1259         strcpy(pcm->name, "CS4231");
1260
1261         chip->p_dma.preallocate(chip, pcm);
1262
1263         chip->pcm = pcm;
1264
1265         return 0;
1266 }
1267
1268 static int __init snd_cs4231_timer(struct snd_card *card)
1269 {
1270         struct snd_cs4231 *chip = card->private_data;
1271         struct snd_timer *timer;
1272         struct snd_timer_id tid;
1273         int err;
1274
1275         /* Timer initialization */
1276         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1277         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1278         tid.card = card->number;
1279         tid.device = 0;
1280         tid.subdevice = 0;
1281         err = snd_timer_new(card, "CS4231", &tid, &timer);
1282         if (err < 0)
1283                 return err;
1284         strcpy(timer->name, "CS4231");
1285         timer->private_data = chip;
1286         timer->hw = snd_cs4231_timer_table;
1287         chip->timer = timer;
1288
1289         return 0;
1290 }
1291
1292 /*
1293  *  MIXER part
1294  */
1295
1296 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1297                                struct snd_ctl_elem_info *uinfo)
1298 {
1299         static char *texts[4] = {
1300                 "Line", "CD", "Mic", "Mix"
1301         };
1302
1303         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1304         uinfo->count = 2;
1305         uinfo->value.enumerated.items = 4;
1306         if (uinfo->value.enumerated.item > 3)
1307                 uinfo->value.enumerated.item = 3;
1308         strcpy(uinfo->value.enumerated.name,
1309                 texts[uinfo->value.enumerated.item]);
1310
1311         return 0;
1312 }
1313
1314 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1315                               struct snd_ctl_elem_value *ucontrol)
1316 {
1317         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1318         unsigned long flags;
1319
1320         spin_lock_irqsave(&chip->lock, flags);
1321         ucontrol->value.enumerated.item[0] =
1322                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1323         ucontrol->value.enumerated.item[1] =
1324                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1325         spin_unlock_irqrestore(&chip->lock, flags);
1326
1327         return 0;
1328 }
1329
1330 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1331                               struct snd_ctl_elem_value *ucontrol)
1332 {
1333         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1334         unsigned long flags;
1335         unsigned short left, right;
1336         int change;
1337
1338         if (ucontrol->value.enumerated.item[0] > 3 ||
1339             ucontrol->value.enumerated.item[1] > 3)
1340                 return -EINVAL;
1341         left = ucontrol->value.enumerated.item[0] << 6;
1342         right = ucontrol->value.enumerated.item[1] << 6;
1343
1344         spin_lock_irqsave(&chip->lock, flags);
1345
1346         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1347         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1348         change = left != chip->image[CS4231_LEFT_INPUT] ||
1349                  right != chip->image[CS4231_RIGHT_INPUT];
1350         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1351         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1352
1353         spin_unlock_irqrestore(&chip->lock, flags);
1354
1355         return change;
1356 }
1357
1358 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1359                                   struct snd_ctl_elem_info *uinfo)
1360 {
1361         int mask = (kcontrol->private_value >> 16) & 0xff;
1362
1363         uinfo->type = (mask == 1) ?
1364                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1365         uinfo->count = 1;
1366         uinfo->value.integer.min = 0;
1367         uinfo->value.integer.max = mask;
1368
1369         return 0;
1370 }
1371
1372 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1373                                  struct snd_ctl_elem_value *ucontrol)
1374 {
1375         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1376         unsigned long flags;
1377         int reg = kcontrol->private_value & 0xff;
1378         int shift = (kcontrol->private_value >> 8) & 0xff;
1379         int mask = (kcontrol->private_value >> 16) & 0xff;
1380         int invert = (kcontrol->private_value >> 24) & 0xff;
1381
1382         spin_lock_irqsave(&chip->lock, flags);
1383
1384         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1385
1386         spin_unlock_irqrestore(&chip->lock, flags);
1387
1388         if (invert)
1389                 ucontrol->value.integer.value[0] =
1390                         (mask - ucontrol->value.integer.value[0]);
1391
1392         return 0;
1393 }
1394
1395 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1396                                  struct snd_ctl_elem_value *ucontrol)
1397 {
1398         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1399         unsigned long flags;
1400         int reg = kcontrol->private_value & 0xff;
1401         int shift = (kcontrol->private_value >> 8) & 0xff;
1402         int mask = (kcontrol->private_value >> 16) & 0xff;
1403         int invert = (kcontrol->private_value >> 24) & 0xff;
1404         int change;
1405         unsigned short val;
1406
1407         val = (ucontrol->value.integer.value[0] & mask);
1408         if (invert)
1409                 val = mask - val;
1410         val <<= shift;
1411
1412         spin_lock_irqsave(&chip->lock, flags);
1413
1414         val = (chip->image[reg] & ~(mask << shift)) | val;
1415         change = val != chip->image[reg];
1416         snd_cs4231_out(chip, reg, val);
1417
1418         spin_unlock_irqrestore(&chip->lock, flags);
1419
1420         return change;
1421 }
1422
1423 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1424                                   struct snd_ctl_elem_info *uinfo)
1425 {
1426         int mask = (kcontrol->private_value >> 24) & 0xff;
1427
1428         uinfo->type = mask == 1 ?
1429                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1430         uinfo->count = 2;
1431         uinfo->value.integer.min = 0;
1432         uinfo->value.integer.max = mask;
1433
1434         return 0;
1435 }
1436
1437 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1438                                  struct snd_ctl_elem_value *ucontrol)
1439 {
1440         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1441         unsigned long flags;
1442         int left_reg = kcontrol->private_value & 0xff;
1443         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1444         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1445         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1446         int mask = (kcontrol->private_value >> 24) & 0xff;
1447         int invert = (kcontrol->private_value >> 22) & 1;
1448
1449         spin_lock_irqsave(&chip->lock, flags);
1450
1451         ucontrol->value.integer.value[0] =
1452                 (chip->image[left_reg] >> shift_left) & mask;
1453         ucontrol->value.integer.value[1] =
1454                 (chip->image[right_reg] >> shift_right) & mask;
1455
1456         spin_unlock_irqrestore(&chip->lock, flags);
1457
1458         if (invert) {
1459                 ucontrol->value.integer.value[0] =
1460                         (mask - ucontrol->value.integer.value[0]);
1461                 ucontrol->value.integer.value[1] =
1462                         (mask - ucontrol->value.integer.value[1]);
1463         }
1464
1465         return 0;
1466 }
1467
1468 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1469                                  struct snd_ctl_elem_value *ucontrol)
1470 {
1471         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1472         unsigned long flags;
1473         int left_reg = kcontrol->private_value & 0xff;
1474         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1475         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1476         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1477         int mask = (kcontrol->private_value >> 24) & 0xff;
1478         int invert = (kcontrol->private_value >> 22) & 1;
1479         int change;
1480         unsigned short val1, val2;
1481
1482         val1 = ucontrol->value.integer.value[0] & mask;
1483         val2 = ucontrol->value.integer.value[1] & mask;
1484         if (invert) {
1485                 val1 = mask - val1;
1486                 val2 = mask - val2;
1487         }
1488         val1 <<= shift_left;
1489         val2 <<= shift_right;
1490
1491         spin_lock_irqsave(&chip->lock, flags);
1492
1493         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1494         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1495         change = val1 != chip->image[left_reg];
1496         change |= val2 != chip->image[right_reg];
1497         snd_cs4231_out(chip, left_reg, val1);
1498         snd_cs4231_out(chip, right_reg, val2);
1499
1500         spin_unlock_irqrestore(&chip->lock, flags);
1501
1502         return change;
1503 }
1504
1505 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1506 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1507   .info = snd_cs4231_info_single,       \
1508   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1509   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1510
1511 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1512                         shift_right, mask, invert) \
1513 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1514   .info = snd_cs4231_info_double,       \
1515   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1516   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1517                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1518
1519 static struct snd_kcontrol_new snd_cs4231_controls[] __initdata = {
1520 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1521                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1522 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1523                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1524 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1525                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1526 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1527                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1528 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1529                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1530 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1531                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1532 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1533                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1534 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1535                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1536 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1537 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1538 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1539 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1540 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1541                 15, 0),
1542 {
1543         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1544         .name   = "Capture Source",
1545         .info   = snd_cs4231_info_mux,
1546         .get    = snd_cs4231_get_mux,
1547         .put    = snd_cs4231_put_mux,
1548 },
1549 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1550                 1, 0),
1551 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1552 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1553 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1554 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1555 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1556 };
1557
1558 static int __init snd_cs4231_mixer(struct snd_card *card)
1559 {
1560         struct snd_cs4231 *chip = card->private_data;
1561         int err, idx;
1562
1563         if (snd_BUG_ON(!chip || !chip->pcm))
1564                 return -EINVAL;
1565
1566         strcpy(card->mixername, chip->pcm->name);
1567
1568         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1569                 err = snd_ctl_add(card,
1570                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1571                 if (err < 0)
1572                         return err;
1573         }
1574         return 0;
1575 }
1576
1577 static int dev;
1578
1579 static int __init cs4231_attach_begin(struct snd_card **rcard)
1580 {
1581         struct snd_card *card;
1582         struct snd_cs4231 *chip;
1583
1584         *rcard = NULL;
1585
1586         if (dev >= SNDRV_CARDS)
1587                 return -ENODEV;
1588
1589         if (!enable[dev]) {
1590                 dev++;
1591                 return -ENOENT;
1592         }
1593
1594         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
1595                             sizeof(struct snd_cs4231));
1596         if (card == NULL)
1597                 return -ENOMEM;
1598
1599         strcpy(card->driver, "CS4231");
1600         strcpy(card->shortname, "Sun CS4231");
1601
1602         chip = card->private_data;
1603         chip->card = card;
1604
1605         *rcard = card;
1606         return 0;
1607 }
1608
1609 static int __init cs4231_attach_finish(struct snd_card *card)
1610 {
1611         struct snd_cs4231 *chip = card->private_data;
1612         int err;
1613
1614         err = snd_cs4231_pcm(card);
1615         if (err < 0)
1616                 goto out_err;
1617
1618         err = snd_cs4231_mixer(card);
1619         if (err < 0)
1620                 goto out_err;
1621
1622         err = snd_cs4231_timer(card);
1623         if (err < 0)
1624                 goto out_err;
1625
1626         err = snd_card_register(card);
1627         if (err < 0)
1628                 goto out_err;
1629
1630         chip->next = cs4231_list;
1631         cs4231_list = chip;
1632
1633         dev++;
1634         return 0;
1635
1636 out_err:
1637         snd_card_free(card);
1638         return err;
1639 }
1640
1641 #ifdef SBUS_SUPPORT
1642
1643 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1644 {
1645         unsigned long flags;
1646         unsigned char status;
1647         u32 csr;
1648         struct snd_cs4231 *chip = dev_id;
1649
1650         /*This is IRQ is not raised by the cs4231*/
1651         if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1652                 return IRQ_NONE;
1653
1654         /* ACK the APC interrupt. */
1655         csr = sbus_readl(chip->port + APCCSR);
1656
1657         sbus_writel(csr, chip->port + APCCSR);
1658
1659         if ((csr & APC_PDMA_READY) &&
1660             (csr & APC_PLAY_INT) &&
1661             (csr & APC_XINT_PNVA) &&
1662             !(csr & APC_XINT_EMPT))
1663                         snd_cs4231_play_callback(chip);
1664
1665         if ((csr & APC_CDMA_READY) &&
1666             (csr & APC_CAPT_INT) &&
1667             (csr & APC_XINT_CNVA) &&
1668             !(csr & APC_XINT_EMPT))
1669                         snd_cs4231_capture_callback(chip);
1670
1671         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1672
1673         if (status & CS4231_TIMER_IRQ) {
1674                 if (chip->timer)
1675                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1676         }
1677
1678         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1679                 snd_cs4231_overrange(chip);
1680
1681         /* ACK the CS4231 interrupt. */
1682         spin_lock_irqsave(&chip->lock, flags);
1683         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1684         spin_unlock_irqrestore(&chip->lock, flags);
1685
1686         return IRQ_HANDLED;
1687 }
1688
1689 /*
1690  * SBUS DMA routines
1691  */
1692
1693 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1694                             dma_addr_t bus_addr, size_t len)
1695 {
1696         unsigned long flags;
1697         u32 test, csr;
1698         int err;
1699         struct sbus_dma_info *base = &dma_cont->sbus_info;
1700
1701         if (len >= (1 << 24))
1702                 return -EINVAL;
1703         spin_lock_irqsave(&base->lock, flags);
1704         csr = sbus_readl(base->regs + APCCSR);
1705         err = -EINVAL;
1706         test = APC_CDMA_READY;
1707         if (base->dir == APC_PLAY)
1708                 test = APC_PDMA_READY;
1709         if (!(csr & test))
1710                 goto out;
1711         err = -EBUSY;
1712         test = APC_XINT_CNVA;
1713         if (base->dir == APC_PLAY)
1714                 test = APC_XINT_PNVA;
1715         if (!(csr & test))
1716                 goto out;
1717         err = 0;
1718         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1719         sbus_writel(len, base->regs + base->dir + APCNC);
1720 out:
1721         spin_unlock_irqrestore(&base->lock, flags);
1722         return err;
1723 }
1724
1725 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1726 {
1727         unsigned long flags;
1728         u32 csr, test;
1729         struct sbus_dma_info *base = &dma_cont->sbus_info;
1730
1731         spin_lock_irqsave(&base->lock, flags);
1732         csr = sbus_readl(base->regs + APCCSR);
1733         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1734                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1735                  APC_XINT_PENA;
1736         if (base->dir == APC_RECORD)
1737                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1738                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1739         csr |= test;
1740         sbus_writel(csr, base->regs + APCCSR);
1741         spin_unlock_irqrestore(&base->lock, flags);
1742 }
1743
1744 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1745 {
1746         unsigned long flags;
1747         u32 csr, shift;
1748         struct sbus_dma_info *base = &dma_cont->sbus_info;
1749
1750         spin_lock_irqsave(&base->lock, flags);
1751         if (!on) {
1752                 sbus_writel(0, base->regs + base->dir + APCNC);
1753                 sbus_writel(0, base->regs + base->dir + APCNVA);
1754                 if (base->dir == APC_PLAY) {
1755                         sbus_writel(0, base->regs + base->dir + APCC);
1756                         sbus_writel(0, base->regs + base->dir + APCVA);
1757                 }
1758
1759                 udelay(1200);
1760         }
1761         csr = sbus_readl(base->regs + APCCSR);
1762         shift = 0;
1763         if (base->dir == APC_PLAY)
1764                 shift = 1;
1765         if (on)
1766                 csr &= ~(APC_CPAUSE << shift);
1767         else
1768                 csr |= (APC_CPAUSE << shift);
1769         sbus_writel(csr, base->regs + APCCSR);
1770         if (on)
1771                 csr |= (APC_CDMA_READY << shift);
1772         else
1773                 csr &= ~(APC_CDMA_READY << shift);
1774         sbus_writel(csr, base->regs + APCCSR);
1775
1776         spin_unlock_irqrestore(&base->lock, flags);
1777 }
1778
1779 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1780 {
1781         struct sbus_dma_info *base = &dma_cont->sbus_info;
1782
1783         return sbus_readl(base->regs + base->dir + APCVA);
1784 }
1785
1786 static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1787 {
1788         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
1789                                         snd_dma_sbus_data(chip->dev_u.sdev),
1790                                         64 * 1024, 128 * 1024);
1791 }
1792
1793 /*
1794  * Init and exit routines
1795  */
1796
1797 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1798 {
1799         if (chip->irq[0])
1800                 free_irq(chip->irq[0], chip);
1801
1802         if (chip->port)
1803                 sbus_iounmap(chip->port, chip->regs_size);
1804
1805         return 0;
1806 }
1807
1808 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1809 {
1810         struct snd_cs4231 *cp = device->device_data;
1811
1812         return snd_cs4231_sbus_free(cp);
1813 }
1814
1815 static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1816         .dev_free       =       snd_cs4231_sbus_dev_free,
1817 };
1818
1819 static int __init snd_cs4231_sbus_create(struct snd_card *card,
1820                                          struct sbus_dev *sdev,
1821                                          int dev)
1822 {
1823         struct snd_cs4231 *chip = card->private_data;
1824         int err;
1825
1826         spin_lock_init(&chip->lock);
1827         spin_lock_init(&chip->c_dma.sbus_info.lock);
1828         spin_lock_init(&chip->p_dma.sbus_info.lock);
1829         mutex_init(&chip->mce_mutex);
1830         mutex_init(&chip->open_mutex);
1831         chip->dev_u.sdev = sdev;
1832         chip->regs_size = sdev->reg_addrs[0].reg_size;
1833         memcpy(&chip->image, &snd_cs4231_original_image,
1834                sizeof(snd_cs4231_original_image));
1835
1836         chip->port = sbus_ioremap(&sdev->resource[0], 0,
1837                                   chip->regs_size, "cs4231");
1838         if (!chip->port) {
1839                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1840                 return -EIO;
1841         }
1842
1843         chip->c_dma.sbus_info.regs = chip->port;
1844         chip->p_dma.sbus_info.regs = chip->port;
1845         chip->c_dma.sbus_info.dir = APC_RECORD;
1846         chip->p_dma.sbus_info.dir = APC_PLAY;
1847
1848         chip->p_dma.prepare = sbus_dma_prepare;
1849         chip->p_dma.enable = sbus_dma_enable;
1850         chip->p_dma.request = sbus_dma_request;
1851         chip->p_dma.address = sbus_dma_addr;
1852         chip->p_dma.preallocate = sbus_dma_preallocate;
1853
1854         chip->c_dma.prepare = sbus_dma_prepare;
1855         chip->c_dma.enable = sbus_dma_enable;
1856         chip->c_dma.request = sbus_dma_request;
1857         chip->c_dma.address = sbus_dma_addr;
1858         chip->c_dma.preallocate = sbus_dma_preallocate;
1859
1860         if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
1861                         IRQF_SHARED, "cs4231", chip)) {
1862                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1863                             dev, sdev->irqs[0]);
1864                 snd_cs4231_sbus_free(chip);
1865                 return -EBUSY;
1866         }
1867         chip->irq[0] = sdev->irqs[0];
1868
1869         if (snd_cs4231_probe(chip) < 0) {
1870                 snd_cs4231_sbus_free(chip);
1871                 return -ENODEV;
1872         }
1873         snd_cs4231_init(chip);
1874
1875         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1876                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1877                 snd_cs4231_sbus_free(chip);
1878                 return err;
1879         }
1880
1881         return 0;
1882 }
1883
1884 static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
1885 {
1886         struct resource *rp = &sdev->resource[0];
1887         struct snd_card *card;
1888         int err;
1889
1890         err = cs4231_attach_begin(&card);
1891         if (err)
1892                 return err;
1893
1894         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1895                 card->shortname,
1896                 rp->flags & 0xffL,
1897                 (unsigned long long)rp->start,
1898                 sdev->irqs[0]);
1899
1900         err = snd_cs4231_sbus_create(card, sdev, dev);
1901         if (err < 0) {
1902                 snd_card_free(card);
1903                 return err;
1904         }
1905
1906         return cs4231_attach_finish(card);
1907 }
1908 #endif
1909
1910 #ifdef EBUS_SUPPORT
1911
1912 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1913                                           void *cookie)
1914 {
1915         struct snd_cs4231 *chip = cookie;
1916
1917         snd_cs4231_play_callback(chip);
1918 }
1919
1920 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1921                                              int event, void *cookie)
1922 {
1923         struct snd_cs4231 *chip = cookie;
1924
1925         snd_cs4231_capture_callback(chip);
1926 }
1927
1928 /*
1929  * EBUS DMA wrappers
1930  */
1931
1932 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1933                              dma_addr_t bus_addr, size_t len)
1934 {
1935         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1936 }
1937
1938 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1939 {
1940         ebus_dma_enable(&dma_cont->ebus_info, on);
1941 }
1942
1943 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1944 {
1945         ebus_dma_prepare(&dma_cont->ebus_info, dir);
1946 }
1947
1948 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1949 {
1950         return ebus_dma_addr(&dma_cont->ebus_info);
1951 }
1952
1953 static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1954 {
1955         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1956                                       snd_dma_pci_data(chip->dev_u.pdev),
1957                                       64*1024, 128*1024);
1958 }
1959
1960 /*
1961  * Init and exit routines
1962  */
1963
1964 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1965 {
1966         if (chip->c_dma.ebus_info.regs) {
1967                 ebus_dma_unregister(&chip->c_dma.ebus_info);
1968                 iounmap(chip->c_dma.ebus_info.regs);
1969         }
1970         if (chip->p_dma.ebus_info.regs) {
1971                 ebus_dma_unregister(&chip->p_dma.ebus_info);
1972                 iounmap(chip->p_dma.ebus_info.regs);
1973         }
1974
1975         if (chip->port)
1976                 iounmap(chip->port);
1977
1978         return 0;
1979 }
1980
1981 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1982 {
1983         struct snd_cs4231 *cp = device->device_data;
1984
1985         return snd_cs4231_ebus_free(cp);
1986 }
1987
1988 static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1989         .dev_free       =       snd_cs4231_ebus_dev_free,
1990 };
1991
1992 static int __init snd_cs4231_ebus_create(struct snd_card *card,
1993                                          struct linux_ebus_device *edev,
1994                                          int dev)
1995 {
1996         struct snd_cs4231 *chip = card->private_data;
1997         int err;
1998
1999         spin_lock_init(&chip->lock);
2000         spin_lock_init(&chip->c_dma.ebus_info.lock);
2001         spin_lock_init(&chip->p_dma.ebus_info.lock);
2002         mutex_init(&chip->mce_mutex);
2003         mutex_init(&chip->open_mutex);
2004         chip->flags |= CS4231_FLAG_EBUS;
2005         chip->dev_u.pdev = edev->bus->self;
2006         memcpy(&chip->image, &snd_cs4231_original_image,
2007                sizeof(snd_cs4231_original_image));
2008         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
2009         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2010         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
2011         chip->c_dma.ebus_info.client_cookie = chip;
2012         chip->c_dma.ebus_info.irq = edev->irqs[0];
2013         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
2014         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2015         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
2016         chip->p_dma.ebus_info.client_cookie = chip;
2017         chip->p_dma.ebus_info.irq = edev->irqs[1];
2018
2019         chip->p_dma.prepare = _ebus_dma_prepare;
2020         chip->p_dma.enable = _ebus_dma_enable;
2021         chip->p_dma.request = _ebus_dma_request;
2022         chip->p_dma.address = _ebus_dma_addr;
2023         chip->p_dma.preallocate = _ebus_dma_preallocate;
2024
2025         chip->c_dma.prepare = _ebus_dma_prepare;
2026         chip->c_dma.enable = _ebus_dma_enable;
2027         chip->c_dma.request = _ebus_dma_request;
2028         chip->c_dma.address = _ebus_dma_addr;
2029         chip->c_dma.preallocate = _ebus_dma_preallocate;
2030
2031         chip->port = ioremap(edev->resource[0].start, 0x10);
2032         chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
2033         chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
2034         if (!chip->port || !chip->p_dma.ebus_info.regs ||
2035             !chip->c_dma.ebus_info.regs) {
2036                 snd_cs4231_ebus_free(chip);
2037                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2038                 return -EIO;
2039         }
2040
2041         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2042                 snd_cs4231_ebus_free(chip);
2043                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
2044                             dev);
2045                 return -EBUSY;
2046         }
2047         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2048                 snd_cs4231_ebus_free(chip);
2049                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2050                             dev);
2051                 return -EBUSY;
2052         }
2053
2054         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2055                 snd_cs4231_ebus_free(chip);
2056                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2057                             dev);
2058                 return -EBUSY;
2059         }
2060         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2061                 snd_cs4231_ebus_free(chip);
2062                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2063                 return -EBUSY;
2064         }
2065
2066         if (snd_cs4231_probe(chip) < 0) {
2067                 snd_cs4231_ebus_free(chip);
2068                 return -ENODEV;
2069         }
2070         snd_cs4231_init(chip);
2071
2072         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2073                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2074                 snd_cs4231_ebus_free(chip);
2075                 return err;
2076         }
2077
2078         return 0;
2079 }
2080
2081 static int __init cs4231_ebus_attach(struct linux_ebus_device *edev)
2082 {
2083         struct snd_card *card;
2084         int err;
2085
2086         err = cs4231_attach_begin(&card);
2087         if (err)
2088                 return err;
2089
2090         sprintf(card->longname, "%s at 0x%lx, irq %d",
2091                 card->shortname,
2092                 edev->resource[0].start,
2093                 edev->irqs[0]);
2094
2095         err = snd_cs4231_ebus_create(card, edev, dev);
2096         if (err < 0) {
2097                 snd_card_free(card);
2098                 return err;
2099         }
2100
2101         return cs4231_attach_finish(card);
2102 }
2103 #endif
2104
2105 static int __init cs4231_init(void)
2106 {
2107 #ifdef SBUS_SUPPORT
2108         struct sbus_bus *sbus;
2109         struct sbus_dev *sdev;
2110 #endif
2111 #ifdef EBUS_SUPPORT
2112         struct linux_ebus *ebus;
2113         struct linux_ebus_device *edev;
2114 #endif
2115         int found;
2116
2117         found = 0;
2118
2119 #ifdef SBUS_SUPPORT
2120         for_all_sbusdev(sdev, sbus) {
2121                 if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
2122                         if (cs4231_sbus_attach(sdev) == 0)
2123                                 found++;
2124                 }
2125         }
2126 #endif
2127 #ifdef EBUS_SUPPORT
2128         for_each_ebus(ebus) {
2129                 for_each_ebusdev(edev, ebus) {
2130                         int match = 0;
2131
2132                         if (!strcmp(edev->prom_node->name, "SUNW,CS4231")) {
2133                                 match = 1;
2134                         } else if (!strcmp(edev->prom_node->name, "audio")) {
2135                                 const char *compat;
2136
2137                                 compat = of_get_property(edev->prom_node,
2138                                                          "compatible", NULL);
2139                                 if (compat && !strcmp(compat, "SUNW,CS4231"))
2140                                         match = 1;
2141                         }
2142
2143                         if (match &&
2144                             cs4231_ebus_attach(edev) == 0)
2145                                 found++;
2146                 }
2147         }
2148 #endif
2149
2150
2151         return (found > 0) ? 0 : -EIO;
2152 }
2153
2154 static void __exit cs4231_exit(void)
2155 {
2156         struct snd_cs4231 *p = cs4231_list;
2157
2158         while (p != NULL) {
2159                 struct snd_cs4231 *next = p->next;
2160
2161                 snd_card_free(p->card);
2162
2163                 p = next;
2164         }
2165
2166         cs4231_list = NULL;
2167 }
2168
2169 module_init(cs4231_init);
2170 module_exit(cs4231_exit);