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/driver.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/info.h>
  26 #include <sound/control.h>
  27 #include <sound/timer.h>
  28 #include <sound/initval.h>
  29 #include <sound/pcm_params.h>
  30
  31 #ifdef CONFIG_SBUS
  32 #define SBUS_SUPPORT
  33 #include <asm/sbus.h>
  34 #endif
  35
  36 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
  37 #define EBUS_SUPPORT
  38 #include <linux/pci.h>
  39 #include <asm/ebus.h>
  40 #endif
  41
  42 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  43 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  44 /* Enable this card */
  45 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  46
  47 module_param_array(index, int, NULL, 0444);
  48 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
  49 module_param_array(id, charp, NULL, 0444);
  50 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
  51 module_param_array(enable, bool, NULL, 0444);
  52 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
  53 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
  54 MODULE_DESCRIPTION("Sun CS4231");
  55 MODULE_LICENSE("GPL");
  56 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
  57
  58 #ifdef SBUS_SUPPORT
  59 struct sbus_dma_info {
  60        spinlock_t       lock;   /* DMA access lock */
  61        int              dir;
  62        void __iomem     *regs;
  63 };
  64 #endif
  65
  66 struct snd_cs4231;
  67 struct cs4231_dma_control {
  68         void            (*prepare)(struct cs4231_dma_control *dma_cont,
  69                                    int dir);
  70         void            (*enable)(struct cs4231_dma_control *dma_cont, int on);
  71         int             (*request)(struct cs4231_dma_control *dma_cont,
  72                                    dma_addr_t bus_addr, size_t len);
  73         unsigned int    (*address)(struct cs4231_dma_control *dma_cont);
  74         void            (*preallocate)(struct snd_cs4231 *chip,
  75                                        struct snd_pcm *pcm);
  76 #ifdef EBUS_SUPPORT
  77         struct          ebus_dma_info   ebus_info;
  78 #endif
  79 #ifdef SBUS_SUPPORT
  80         struct          sbus_dma_info   sbus_info;
  81 #endif
  82 };
  83
  84 struct snd_cs4231 {
  85         spinlock_t              lock;   /* registers access lock */
  86         void __iomem            *port;
  87
  88         struct cs4231_dma_control       p_dma;
  89         struct cs4231_dma_control       c_dma;
  90
  91         u32                     flags;
  92 #define CS4231_FLAG_EBUS        0x00000001
  93 #define CS4231_FLAG_PLAYBACK    0x00000002
  94 #define CS4231_FLAG_CAPTURE     0x00000004
  95
  96         struct snd_card         *card;
  97         struct snd_pcm          *pcm;
  98         struct snd_pcm_substream        *playback_substream;
  99         unsigned int            p_periods_sent;
 100         struct snd_pcm_substream        *capture_substream;
 101         unsigned int            c_periods_sent;
 102         struct snd_timer        *timer;
 103
 104         unsigned short mode;
 105 #define CS4231_MODE_NONE        0x0000
 106 #define CS4231_MODE_PLAY        0x0001
 107 #define CS4231_MODE_RECORD      0x0002
 108 #define CS4231_MODE_TIMER       0x0004
 109 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
 110                                  CS4231_MODE_TIMER)
 111
 112         unsigned char           image[32];      /* registers image */
 113         int                     mce_bit;
 114         int                     calibrate_mute;
 115         struct mutex            mce_mutex;      /* mutex for mce register */
 116         struct mutex            open_mutex;     /* mutex for ALSA open/close */
 117
 118         union {
 119 #ifdef SBUS_SUPPORT
 120                 struct sbus_dev         *sdev;
 121 #endif
 122 #ifdef EBUS_SUPPORT
 123                 struct pci_dev          *pdev;
 124 #endif
 125         } dev_u;
 126         unsigned int            irq[2];
 127         unsigned int            regs_size;
 128         struct snd_cs4231       *next;
 129 };
 130
 131 static struct snd_cs4231 *cs4231_list;
 132
 133 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
 134  * now....  -DaveM
 135  */
 136
 137 /* IO ports */
 138 #include <sound/cs4231-regs.h>
 139
 140 /* XXX offsets are different than PC ISA chips... */
 141 #define CS4231U(chip, x)        ((chip)->port + ((c_d_c_CS4231##x) << 2))
 142
 143 /* SBUS DMA register defines.  */
 144
 145 #define APCCSR  0x10UL  /* APC DMA CSR */
 146 #define APCCVA  0x20UL  /* APC Capture DMA Address */
 147 #define APCCC   0x24UL  /* APC Capture Count */
 148 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
 149 #define APCCNC  0x2cUL  /* APC Capture Next Count */
 150 #define APCPVA  0x30UL  /* APC Play DMA Address */
 151 #define APCPC   0x34UL  /* APC Play Count */
 152 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
 153 #define APCPNC  0x3cUL  /* APC Play Next Count */
 154
 155 /* Defines for SBUS DMA-routines */
 156
 157 #define APCVA  0x0UL    /* APC DMA Address */
 158 #define APCC   0x4UL    /* APC Count */
 159 #define APCNVA 0x8UL    /* APC DMA Next Address */
 160 #define APCNC  0xcUL    /* APC Next Count */
 161 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
 162 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
 163
 164 /* APCCSR bits */
 165
 166 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
 167 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
 168 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
 169 #define APC_GENL_INT    0x100000 /* General interrupt */
 170 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
 171 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
 172 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
 173 #define APC_XINT_GENL   0x10000  /* Error ext intr */
 174 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
 175 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
 176 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
 177 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
 178 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
 179 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
 180 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
 181 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
 182 #define APC_PPAUSE      0x80     /* Pause the play DMA */
 183 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
 184 #define APC_CDC_RESET   0x20     /* CODEC RESET */
 185 #define APC_PDMA_READY  0x08     /* Play DMA Go */
 186 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
 187 #define APC_CHIP_RESET  0x01     /* Reset the chip */
 188
 189 /* EBUS DMA register offsets  */
 190
 191 #define EBDMA_CSR       0x00UL  /* Control/Status */
 192 #define EBDMA_ADDR      0x04UL  /* DMA Address */
 193 #define EBDMA_COUNT     0x08UL  /* DMA Count */
 194
 195 /*
 196  *  Some variables
 197  */
 198
 199 static unsigned char freq_bits[14] = {
 200         /* 5510 */      0x00 | CS4231_XTAL2,
 201         /* 6620 */      0x0E | CS4231_XTAL2,
 202         /* 8000 */      0x00 | CS4231_XTAL1,
 203         /* 9600 */      0x0E | CS4231_XTAL1,
 204         /* 11025 */     0x02 | CS4231_XTAL2,
 205         /* 16000 */     0x02 | CS4231_XTAL1,
 206         /* 18900 */     0x04 | CS4231_XTAL2,
 207         /* 22050 */     0x06 | CS4231_XTAL2,
 208         /* 27042 */     0x04 | CS4231_XTAL1,
 209         /* 32000 */     0x06 | CS4231_XTAL1,
 210         /* 33075 */     0x0C | CS4231_XTAL2,
 211         /* 37800 */     0x08 | CS4231_XTAL2,
 212         /* 44100 */     0x0A | CS4231_XTAL2,
 213         /* 48000 */     0x0C | CS4231_XTAL1
 214 };
 215
 216 static unsigned int rates[14] = {
 217         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
 218         27042, 32000, 33075, 37800, 44100, 48000
 219 };
 220
 221 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 222         .count  = ARRAY_SIZE(rates),
 223         .list   = rates,
 224 };
 225
 226 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
 227 {
 228         return snd_pcm_hw_constraint_list(runtime, 0,
 229                                           SNDRV_PCM_HW_PARAM_RATE,
 230                                           &hw_constraints_rates);
 231 }
 232
 233 static unsigned char snd_cs4231_original_image[32] =
 234 {
 235         0x00,                   /* 00/00 - lic */
 236         0x00,                   /* 01/01 - ric */
 237         0x9f,                   /* 02/02 - la1ic */
 238         0x9f,                   /* 03/03 - ra1ic */
 239         0x9f,                   /* 04/04 - la2ic */
 240         0x9f,                   /* 05/05 - ra2ic */
 241         0xbf,                   /* 06/06 - loc */
 242         0xbf,                   /* 07/07 - roc */
 243         0x20,                   /* 08/08 - pdfr */
 244         CS4231_AUTOCALIB,       /* 09/09 - ic */
 245         0x00,                   /* 0a/10 - pc */
 246         0x00,                   /* 0b/11 - ti */
 247         CS4231_MODE2,           /* 0c/12 - mi */
 248         0x00,                   /* 0d/13 - lbc */
 249         0x00,                   /* 0e/14 - pbru */
 250         0x00,                   /* 0f/15 - pbrl */
 251         0x80,                   /* 10/16 - afei */
 252         0x01,                   /* 11/17 - afeii */
 253         0x9f,                   /* 12/18 - llic */
 254         0x9f,                   /* 13/19 - rlic */
 255         0x00,                   /* 14/20 - tlb */
 256         0x00,                   /* 15/21 - thb */
 257         0x00,                   /* 16/22 - la3mic/reserved */
 258         0x00,                   /* 17/23 - ra3mic/reserved */
 259         0x00,                   /* 18/24 - afs */
 260         0x00,                   /* 19/25 - lamoc/version */
 261         0x00,                   /* 1a/26 - mioc */
 262         0x00,                   /* 1b/27 - ramoc/reserved */
 263         0x20,                   /* 1c/28 - cdfr */
 264         0x00,                   /* 1d/29 - res4 */
 265         0x00,                   /* 1e/30 - cbru */
 266         0x00,                   /* 1f/31 - cbrl */
 267 };
 268
 269 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
 270 {
 271 #ifdef EBUS_SUPPORT
 272         if (cp->flags & CS4231_FLAG_EBUS)
 273                 return readb(reg_addr);
 274         else
 275 #endif
 276 #ifdef SBUS_SUPPORT
 277                 return sbus_readb(reg_addr);
 278 #endif
 279 }
 280
 281 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
 282                             void __iomem *reg_addr)
 283 {
 284 #ifdef EBUS_SUPPORT
 285         if (cp->flags & CS4231_FLAG_EBUS)
 286                 return writeb(val, reg_addr);
 287         else
 288 #endif
 289 #ifdef SBUS_SUPPORT
 290                 return sbus_writeb(val, reg_addr);
 291 #endif
 292 }
 293
 294 /*
 295  *  Basic I/O functions
 296  */
 297
 298 static void snd_cs4231_ready(struct snd_cs4231 *chip)
 299 {
 300         int timeout;
 301
 302         for (timeout = 250; timeout > 0; timeout--) {
 303                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 304                 if ((val & CS4231_INIT) == 0)
 305                         break;
 306                 udelay(100);
 307         }
 308 }
 309
 310 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
 311                             unsigned char value)
 312 {
 313         snd_cs4231_ready(chip);
 314 #ifdef CONFIG_SND_DEBUG
 315         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 316                 snd_printdd("out: auto calibration time out - reg = 0x%x, "
 317                             "value = 0x%x\n",
 318                             reg, value);
 319 #endif
 320         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 321         wmb();
 322         __cs4231_writeb(chip, value, CS4231U(chip, REG));
 323         mb();
 324 }
 325
 326 static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
 327                      unsigned char mask, unsigned char value)
 328 {
 329         unsigned char tmp = (chip->image[reg] & mask) | value;
 330
 331         chip->image[reg] = tmp;
 332         if (!chip->calibrate_mute)
 333                 snd_cs4231_dout(chip, reg, tmp);
 334 }
 335
 336 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
 337                            unsigned char value)
 338 {
 339         snd_cs4231_dout(chip, reg, value);
 340         chip->image[reg] = value;
 341         mb();
 342 }
 343
 344 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
 345 {
 346         snd_cs4231_ready(chip);
 347 #ifdef CONFIG_SND_DEBUG
 348         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 349                 snd_printdd("in: auto calibration time out - reg = 0x%x\n",
 350                             reg);
 351 #endif
 352         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 353         mb();
 354         return __cs4231_readb(chip, CS4231U(chip, REG));
 355 }
 356
 357 /*
 358  *  CS4231 detection / MCE routines
 359  */
 360
 361 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 362 {
 363         int timeout;
 364
 365         /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
 366         for (timeout = 5; timeout > 0; timeout--)
 367                 __cs4231_readb(chip, CS4231U(chip, REGSEL));
 368
 369         /* end of cleanup sequence */
 370         for (timeout = 500; timeout > 0; timeout--) {
 371                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 372                 if ((val & CS4231_INIT) == 0)
 373                         break;
 374                 msleep(1);
 375         }
 376 }
 377
 378 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 379 {
 380         unsigned long flags;
 381         int timeout;
 382
 383         spin_lock_irqsave(&chip->lock, flags);
 384         snd_cs4231_ready(chip);
 385 #ifdef CONFIG_SND_DEBUG
 386         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 387                 snd_printdd("mce_up - auto calibration time out (0)\n");
 388 #endif
 389         chip->mce_bit |= CS4231_MCE;
 390         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 391         if (timeout == 0x80)
 392                 snd_printdd("mce_up [%p]: serious init problem - "
 393                             "codec still busy\n",
 394                             chip->port);
 395         if (!(timeout & CS4231_MCE))
 396                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
 397                                 CS4231U(chip, REGSEL));
 398         spin_unlock_irqrestore(&chip->lock, flags);
 399 }
 400
 401 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 402 {
 403         unsigned long flags, timeout;
 404         int reg;
 405
 406         snd_cs4231_busy_wait(chip);
 407         spin_lock_irqsave(&chip->lock, flags);
 408 #ifdef CONFIG_SND_DEBUG
 409         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 410                 snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
 411                             CS4231U(chip, REGSEL));
 412 #endif
 413         chip->mce_bit &= ~CS4231_MCE;
 414         reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 415         __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
 416                         CS4231U(chip, REGSEL));
 417         if (reg == 0x80)
 418                 snd_printdd("mce_down [%p]: serious init problem "
 419                             "- codec still busy\n", chip->port);
 420         if ((reg & CS4231_MCE) == 0) {
 421                 spin_unlock_irqrestore(&chip->lock, flags);
 422                 return;
 423         }
 424
 425         /*
 426          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 427          */
 428         timeout = jiffies + msecs_to_jiffies(250);
 429         do {
 430                 spin_unlock_irqrestore(&chip->lock, flags);
 431                 msleep(1);
 432                 spin_lock_irqsave(&chip->lock, flags);
 433                 reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
 434                 reg &= CS4231_CALIB_IN_PROGRESS;
 435         } while (reg && time_before(jiffies, timeout));
 436         spin_unlock_irqrestore(&chip->lock, flags);
 437
 438         if (reg)
 439                 snd_printk(KERN_ERR
 440                            "mce_down - auto calibration time out (2)\n");
 441 }
 442
 443 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
 444                                    struct snd_pcm_substream *substream,
 445                                    unsigned int *periods_sent)
 446 {
 447         struct snd_pcm_runtime *runtime = substream->runtime;
 448
 449         while (1) {
 450                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
 451                 unsigned int offset = period_size * (*periods_sent);
 452
 453                 BUG_ON(period_size >= (1 << 24));
 454
 455                 if (dma_cont->request(dma_cont,
 456                                       runtime->dma_addr + offset, period_size))
 457                         return;
 458                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 459         }
 460 }
 461
 462 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
 463                                unsigned int what, int on)
 464 {
 465         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 466         struct cs4231_dma_control *dma_cont;
 467
 468         if (what & CS4231_PLAYBACK_ENABLE) {
 469                 dma_cont = &chip->p_dma;
 470                 if (on) {
 471                         dma_cont->prepare(dma_cont, 0);
 472                         dma_cont->enable(dma_cont, 1);
 473                         snd_cs4231_advance_dma(dma_cont,
 474                                 chip->playback_substream,
 475                                 &chip->p_periods_sent);
 476                 } else {
 477                         dma_cont->enable(dma_cont, 0);
 478                 }
 479         }
 480         if (what & CS4231_RECORD_ENABLE) {
 481                 dma_cont = &chip->c_dma;
 482                 if (on) {
 483                         dma_cont->prepare(dma_cont, 1);
 484                         dma_cont->enable(dma_cont, 1);
 485                         snd_cs4231_advance_dma(dma_cont,
 486                                 chip->capture_substream,
 487                                 &chip->c_periods_sent);
 488                 } else {
 489                         dma_cont->enable(dma_cont, 0);
 490                 }
 491         }
 492 }
 493
 494 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
 495 {
 496         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 497         int result = 0;
 498
 499         switch (cmd) {
 500         case SNDRV_PCM_TRIGGER_START:
 501         case SNDRV_PCM_TRIGGER_STOP:
 502         {
 503                 unsigned int what = 0;
 504                 struct snd_pcm_substream *s;
 505                 unsigned long flags;
 506
 507                 snd_pcm_group_for_each_entry(s, substream) {
 508                         if (s == chip->playback_substream) {
 509                                 what |= CS4231_PLAYBACK_ENABLE;
 510                                 snd_pcm_trigger_done(s, substream);
 511                         } else if (s == chip->capture_substream) {
 512                                 what |= CS4231_RECORD_ENABLE;
 513                                 snd_pcm_trigger_done(s, substream);
 514                         }
 515                 }
 516
 517                 spin_lock_irqsave(&chip->lock, flags);
 518                 if (cmd == SNDRV_PCM_TRIGGER_START) {
 519                         cs4231_dma_trigger(substream, what, 1);
 520                         chip->image[CS4231_IFACE_CTRL] |= what;
 521                 } else {
 522                         cs4231_dma_trigger(substream, what, 0);
 523                         chip->image[CS4231_IFACE_CTRL] &= ~what;
 524                 }
 525                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 526                                chip->image[CS4231_IFACE_CTRL]);
 527                 spin_unlock_irqrestore(&chip->lock, flags);
 528                 break;
 529         }
 530         default:
 531                 result = -EINVAL;
 532                 break;
 533         }
 534
 535         return result;
 536 }
 537
 538 /*
 539  *  CODEC I/O
 540  */
 541
 542 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 543 {
 544         int i;
 545
 546         for (i = 0; i < 14; i++)
 547                 if (rate == rates[i])
 548                         return freq_bits[i];
 549
 550         return freq_bits[13];
 551 }
 552
 553 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
 554                                            int channels)
 555 {
 556         unsigned char rformat;
 557
 558         rformat = CS4231_LINEAR_8;
 559         switch (format) {
 560         case SNDRV_PCM_FORMAT_MU_LAW:
 561                 rformat = CS4231_ULAW_8;
 562                 break;
 563         case SNDRV_PCM_FORMAT_A_LAW:
 564                 rformat = CS4231_ALAW_8;
 565                 break;
 566         case SNDRV_PCM_FORMAT_S16_LE:
 567                 rformat = CS4231_LINEAR_16;
 568                 break;
 569         case SNDRV_PCM_FORMAT_S16_BE:
 570                 rformat = CS4231_LINEAR_16_BIG;
 571                 break;
 572         case SNDRV_PCM_FORMAT_IMA_ADPCM:
 573                 rformat = CS4231_ADPCM_16;
 574                 break;
 575         }
 576         if (channels > 1)
 577                 rformat |= CS4231_STEREO;
 578         return rformat;
 579 }
 580
 581 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 582 {
 583         unsigned long flags;
 584
 585         mute = mute ? 1 : 0;
 586         spin_lock_irqsave(&chip->lock, flags);
 587         if (chip->calibrate_mute == mute) {
 588                 spin_unlock_irqrestore(&chip->lock, flags);
 589                 return;
 590         }
 591         if (!mute) {
 592                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 593                                 chip->image[CS4231_LEFT_INPUT]);
 594                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 595                                 chip->image[CS4231_RIGHT_INPUT]);
 596                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
 597                                 chip->image[CS4231_LOOPBACK]);
 598         }
 599         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 600                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 601         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 602                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 603         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 604                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 605         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 606                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 607         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 608                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 609         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 610                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 611         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 612                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 613         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 614                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 615         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 616                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 617         chip->calibrate_mute = mute;
 618         spin_unlock_irqrestore(&chip->lock, flags);
 619 }
 620
 621 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 622                                        struct snd_pcm_hw_params *params,
 623                                        unsigned char pdfr)
 624 {
 625         unsigned long flags;
 626
 627         mutex_lock(&chip->mce_mutex);
 628         snd_cs4231_calibrate_mute(chip, 1);
 629
 630         snd_cs4231_mce_up(chip);
 631
 632         spin_lock_irqsave(&chip->lock, flags);
 633         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 634                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 635                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 636                        pdfr);
 637         spin_unlock_irqrestore(&chip->lock, flags);
 638
 639         snd_cs4231_mce_down(chip);
 640
 641         snd_cs4231_calibrate_mute(chip, 0);
 642         mutex_unlock(&chip->mce_mutex);
 643 }
 644
 645 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 646                                       struct snd_pcm_hw_params *params,
 647                                       unsigned char cdfr)
 648 {
 649         unsigned long flags;
 650
 651         mutex_lock(&chip->mce_mutex);
 652         snd_cs4231_calibrate_mute(chip, 1);
 653
 654         snd_cs4231_mce_up(chip);
 655
 656         spin_lock_irqsave(&chip->lock, flags);
 657         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 658                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 659                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 660                                (cdfr & 0x0f));
 661                 spin_unlock_irqrestore(&chip->lock, flags);
 662                 snd_cs4231_mce_down(chip);
 663                 snd_cs4231_mce_up(chip);
 664                 spin_lock_irqsave(&chip->lock, flags);
 665         }
 666         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 667         spin_unlock_irqrestore(&chip->lock, flags);
 668
 669         snd_cs4231_mce_down(chip);
 670
 671         snd_cs4231_calibrate_mute(chip, 0);
 672         mutex_unlock(&chip->mce_mutex);
 673 }
 674
 675 /*
 676  *  Timer interface
 677  */
 678
 679 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
 680 {
 681         struct snd_cs4231 *chip = snd_timer_chip(timer);
 682
 683         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 684 }
 685
 686 static int snd_cs4231_timer_start(struct snd_timer *timer)
 687 {
 688         unsigned long flags;
 689         unsigned int ticks;
 690         struct snd_cs4231 *chip = snd_timer_chip(timer);
 691
 692         spin_lock_irqsave(&chip->lock, flags);
 693         ticks = timer->sticks;
 694         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 695             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 696             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 697                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 698                                chip->image[CS4231_TIMER_HIGH] =
 699                                (unsigned char) (ticks >> 8));
 700                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
 701                                chip->image[CS4231_TIMER_LOW] =
 702                                (unsigned char) ticks);
 703                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 704                                chip->image[CS4231_ALT_FEATURE_1] |
 705                                         CS4231_TIMER_ENABLE);
 706         }
 707         spin_unlock_irqrestore(&chip->lock, flags);
 708
 709         return 0;
 710 }
 711
 712 static int snd_cs4231_timer_stop(struct snd_timer *timer)
 713 {
 714         unsigned long flags;
 715         struct snd_cs4231 *chip = snd_timer_chip(timer);
 716
 717         spin_lock_irqsave(&chip->lock, flags);
 718         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
 719         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 720                        chip->image[CS4231_ALT_FEATURE_1]);
 721         spin_unlock_irqrestore(&chip->lock, flags);
 722
 723         return 0;
 724 }
 725
 726 static void __init snd_cs4231_init(struct snd_cs4231 *chip)
 727 {
 728         unsigned long flags;
 729
 730         snd_cs4231_mce_down(chip);
 731
 732 #ifdef SNDRV_DEBUG_MCE
 733         snd_printdd("init: (1)\n");
 734 #endif
 735         snd_cs4231_mce_up(chip);
 736         spin_lock_irqsave(&chip->lock, flags);
 737         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 738                                             CS4231_PLAYBACK_PIO |
 739                                             CS4231_RECORD_ENABLE |
 740                                             CS4231_RECORD_PIO |
 741                                             CS4231_CALIB_MODE);
 742         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 743         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 744         spin_unlock_irqrestore(&chip->lock, flags);
 745         snd_cs4231_mce_down(chip);
 746
 747 #ifdef SNDRV_DEBUG_MCE
 748         snd_printdd("init: (2)\n");
 749 #endif
 750
 751         snd_cs4231_mce_up(chip);
 752         spin_lock_irqsave(&chip->lock, flags);
 753         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 754                         chip->image[CS4231_ALT_FEATURE_1]);
 755         spin_unlock_irqrestore(&chip->lock, flags);
 756         snd_cs4231_mce_down(chip);
 757
 758 #ifdef SNDRV_DEBUG_MCE
 759         snd_printdd("init: (3) - afei = 0x%x\n",
 760                     chip->image[CS4231_ALT_FEATURE_1]);
 761 #endif
 762
 763         spin_lock_irqsave(&chip->lock, flags);
 764         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
 765                         chip->image[CS4231_ALT_FEATURE_2]);
 766         spin_unlock_irqrestore(&chip->lock, flags);
 767
 768         snd_cs4231_mce_up(chip);
 769         spin_lock_irqsave(&chip->lock, flags);
 770         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 771                         chip->image[CS4231_PLAYBK_FORMAT]);
 772         spin_unlock_irqrestore(&chip->lock, flags);
 773         snd_cs4231_mce_down(chip);
 774
 775 #ifdef SNDRV_DEBUG_MCE
 776         snd_printdd("init: (4)\n");
 777 #endif
 778
 779         snd_cs4231_mce_up(chip);
 780         spin_lock_irqsave(&chip->lock, flags);
 781         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 782         spin_unlock_irqrestore(&chip->lock, flags);
 783         snd_cs4231_mce_down(chip);
 784
 785 #ifdef SNDRV_DEBUG_MCE
 786         snd_printdd("init: (5)\n");
 787 #endif
 788 }
 789
 790 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 791 {
 792         unsigned long flags;
 793
 794         mutex_lock(&chip->open_mutex);
 795         if ((chip->mode & mode)) {
 796                 mutex_unlock(&chip->open_mutex);
 797                 return -EAGAIN;
 798         }
 799         if (chip->mode & CS4231_MODE_OPEN) {
 800                 chip->mode |= mode;
 801                 mutex_unlock(&chip->open_mutex);
 802                 return 0;
 803         }
 804         /* ok. now enable and ack CODEC IRQ */
 805         spin_lock_irqsave(&chip->lock, flags);
 806         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 807                        CS4231_RECORD_IRQ |
 808                        CS4231_TIMER_IRQ);
 809         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 810         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 811         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 812
 813         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 814                        CS4231_RECORD_IRQ |
 815                        CS4231_TIMER_IRQ);
 816         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 817
 818         spin_unlock_irqrestore(&chip->lock, flags);
 819
 820         chip->mode = mode;
 821         mutex_unlock(&chip->open_mutex);
 822         return 0;
 823 }
 824
 825 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 826 {
 827         unsigned long flags;
 828
 829         mutex_lock(&chip->open_mutex);
 830         chip->mode &= ~mode;
 831         if (chip->mode & CS4231_MODE_OPEN) {
 832                 mutex_unlock(&chip->open_mutex);
 833                 return;
 834         }
 835         snd_cs4231_calibrate_mute(chip, 1);
 836
 837         /* disable IRQ */
 838         spin_lock_irqsave(&chip->lock, flags);
 839         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 840         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 841         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 842
 843         /* now disable record & playback */
 844
 845         if (chip->image[CS4231_IFACE_CTRL] &
 846             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 847              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 848                 spin_unlock_irqrestore(&chip->lock, flags);
 849                 snd_cs4231_mce_up(chip);
 850                 spin_lock_irqsave(&chip->lock, flags);
 851                 chip->image[CS4231_IFACE_CTRL] &=
 852                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 853                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 854                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 855                                 chip->image[CS4231_IFACE_CTRL]);
 856                 spin_unlock_irqrestore(&chip->lock, flags);
 857                 snd_cs4231_mce_down(chip);
 858                 spin_lock_irqsave(&chip->lock, flags);
 859         }
 860
 861         /* clear IRQ again */
 862         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 863         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 864         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 865         spin_unlock_irqrestore(&chip->lock, flags);
 866
 867         snd_cs4231_calibrate_mute(chip, 0);
 868
 869         chip->mode = 0;
 870         mutex_unlock(&chip->open_mutex);
 871 }
 872
 873 /*
 874  *  timer open/close
 875  */
 876
 877 static int snd_cs4231_timer_open(struct snd_timer *timer)
 878 {
 879         struct snd_cs4231 *chip = snd_timer_chip(timer);
 880         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 881         return 0;
 882 }
 883
 884 static int snd_cs4231_timer_close(struct snd_timer *timer)
 885 {
 886         struct snd_cs4231 *chip = snd_timer_chip(timer);
 887         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 888         return 0;
 889 }
 890
 891 static struct snd_timer_hardware snd_cs4231_timer_table = {
 892         .flags          =       SNDRV_TIMER_HW_AUTO,
 893         .resolution     =       9945,
 894         .ticks          =       65535,
 895         .open           =       snd_cs4231_timer_open,
 896         .close          =       snd_cs4231_timer_close,
 897         .c_resolution   =       snd_cs4231_timer_resolution,
 898         .start          =       snd_cs4231_timer_start,
 899         .stop           =       snd_cs4231_timer_stop,
 900 };
 901
 902 /*
 903  *  ok.. exported functions..
 904  */
 905
 906 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 907                                          struct snd_pcm_hw_params *hw_params)
 908 {
 909         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 910         unsigned char new_pdfr;
 911         int err;
 912
 913         err = snd_pcm_lib_malloc_pages(substream,
 914                                         params_buffer_bytes(hw_params));
 915         if (err < 0)
 916                 return err;
 917         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 918                                          params_channels(hw_params)) |
 919                 snd_cs4231_get_rate(params_rate(hw_params));
 920         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
 921
 922         return 0;
 923 }
 924
 925 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 926 {
 927         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 928         struct snd_pcm_runtime *runtime = substream->runtime;
 929         unsigned long flags;
 930
 931         spin_lock_irqsave(&chip->lock, flags);
 932
 933         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 934                                             CS4231_PLAYBACK_PIO);
 935
 936         BUG_ON(runtime->period_size > 0xffff + 1);
 937
 938         chip->p_periods_sent = 0;
 939         spin_unlock_irqrestore(&chip->lock, flags);
 940
 941         return 0;
 942 }
 943
 944 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 945                                         struct snd_pcm_hw_params *hw_params)
 946 {
 947         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 948         unsigned char new_cdfr;
 949         int err;
 950
 951         err = snd_pcm_lib_malloc_pages(substream,
 952                                         params_buffer_bytes(hw_params));
 953         if (err < 0)
 954                 return err;
 955         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 956                                          params_channels(hw_params)) |
 957                 snd_cs4231_get_rate(params_rate(hw_params));
 958         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
 959
 960         return 0;
 961 }
 962
 963 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 964 {
 965         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 966         unsigned long flags;
 967
 968         spin_lock_irqsave(&chip->lock, flags);
 969         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
 970                                             CS4231_RECORD_PIO);
 971
 972
 973         chip->c_periods_sent = 0;
 974         spin_unlock_irqrestore(&chip->lock, flags);
 975
 976         return 0;
 977 }
 978
 979 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 980 {
 981         unsigned long flags;
 982         unsigned char res;
 983
 984         spin_lock_irqsave(&chip->lock, flags);
 985         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 986         spin_unlock_irqrestore(&chip->lock, flags);
 987
 988         /* detect overrange only above 0dB; may be user selectable? */
 989         if (res & (0x08 | 0x02))
 990                 chip->capture_substream->runtime->overrange++;
 991 }
 992
 993 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
 994 {
 995         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
 996                 snd_pcm_period_elapsed(chip->playback_substream);
 997                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
 998                                             &chip->p_periods_sent);
 999         }
1000 }
1001
1002 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
1003 {
1004         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
1005                 snd_pcm_period_elapsed(chip->capture_substream);
1006                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
1007                                             &chip->c_periods_sent);
1008         }
1009 }
1010
1011 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
1012                                         struct snd_pcm_substream *substream)
1013 {
1014         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1015         struct cs4231_dma_control *dma_cont = &chip->p_dma;
1016         size_t ptr;
1017
1018         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1019                 return 0;
1020         ptr = dma_cont->address(dma_cont);
1021         if (ptr != 0)
1022                 ptr -= substream->runtime->dma_addr;
1023
1024         return bytes_to_frames(substream->runtime, ptr);
1025 }
1026
1027 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1028                                         struct snd_pcm_substream *substream)
1029 {
1030         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1031         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1032         size_t ptr;
1033
1034         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1035                 return 0;
1036         ptr = dma_cont->address(dma_cont);
1037         if (ptr != 0)
1038                 ptr -= substream->runtime->dma_addr;
1039
1040         return bytes_to_frames(substream->runtime, ptr);
1041 }
1042
1043 static int __init snd_cs4231_probe(struct snd_cs4231 *chip)
1044 {
1045         unsigned long flags;
1046         int i;
1047         int id = 0;
1048         int vers = 0;
1049         unsigned char *ptr;
1050
1051         for (i = 0; i < 50; i++) {
1052                 mb();
1053                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1054                         msleep(2);
1055                 else {
1056                         spin_lock_irqsave(&chip->lock, flags);
1057                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1058                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1059                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1060                         spin_unlock_irqrestore(&chip->lock, flags);
1061                         if (id == 0x0a)
1062                                 break;  /* this is valid value */
1063                 }
1064         }
1065         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1066         if (id != 0x0a)
1067                 return -ENODEV; /* no valid device found */
1068
1069         spin_lock_irqsave(&chip->lock, flags);
1070
1071         /* clear any pendings IRQ */
1072         __cs4231_readb(chip, CS4231U(chip, STATUS));
1073         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1074         mb();
1075
1076         spin_unlock_irqrestore(&chip->lock, flags);
1077
1078         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1079         chip->image[CS4231_IFACE_CTRL] =
1080                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1081         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1082         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1083         if (vers & 0x20)
1084                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1085
1086         ptr = (unsigned char *) &chip->image;
1087
1088         snd_cs4231_mce_down(chip);
1089
1090         spin_lock_irqsave(&chip->lock, flags);
1091
1092         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1093                 snd_cs4231_out(chip, i, *ptr++);
1094
1095         spin_unlock_irqrestore(&chip->lock, flags);
1096
1097         snd_cs4231_mce_up(chip);
1098
1099         snd_cs4231_mce_down(chip);
1100
1101         mdelay(2);
1102
1103         return 0;               /* all things are ok.. */
1104 }
1105
1106 static struct snd_pcm_hardware snd_cs4231_playback = {
1107         .info                   = SNDRV_PCM_INFO_MMAP |
1108                                   SNDRV_PCM_INFO_INTERLEAVED |
1109                                   SNDRV_PCM_INFO_MMAP_VALID |
1110                                   SNDRV_PCM_INFO_SYNC_START,
1111         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1112                                   SNDRV_PCM_FMTBIT_A_LAW |
1113                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1114                                   SNDRV_PCM_FMTBIT_U8 |
1115                                   SNDRV_PCM_FMTBIT_S16_LE |
1116                                   SNDRV_PCM_FMTBIT_S16_BE,
1117         .rates                  = SNDRV_PCM_RATE_KNOT |
1118                                   SNDRV_PCM_RATE_8000_48000,
1119         .rate_min               = 5510,
1120         .rate_max               = 48000,
1121         .channels_min           = 1,
1122         .channels_max           = 2,
1123         .buffer_bytes_max       = 32 * 1024,
1124         .period_bytes_min       = 64,
1125         .period_bytes_max       = 32 * 1024,
1126         .periods_min            = 1,
1127         .periods_max            = 1024,
1128 };
1129
1130 static struct snd_pcm_hardware snd_cs4231_capture = {
1131         .info                   = SNDRV_PCM_INFO_MMAP |
1132                                   SNDRV_PCM_INFO_INTERLEAVED |
1133                                   SNDRV_PCM_INFO_MMAP_VALID |
1134                                   SNDRV_PCM_INFO_SYNC_START,
1135         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1136                                   SNDRV_PCM_FMTBIT_A_LAW |
1137                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1138                                   SNDRV_PCM_FMTBIT_U8 |
1139                                   SNDRV_PCM_FMTBIT_S16_LE |
1140                                   SNDRV_PCM_FMTBIT_S16_BE,
1141         .rates                  = SNDRV_PCM_RATE_KNOT |
1142                                   SNDRV_PCM_RATE_8000_48000,
1143         .rate_min               = 5510,
1144         .rate_max               = 48000,
1145         .channels_min           = 1,
1146         .channels_max           = 2,
1147         .buffer_bytes_max       = 32 * 1024,
1148         .period_bytes_min       = 64,
1149         .period_bytes_max       = 32 * 1024,
1150         .periods_min            = 1,
1151         .periods_max            = 1024,
1152 };
1153
1154 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1155 {
1156         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1157         struct snd_pcm_runtime *runtime = substream->runtime;
1158         int err;
1159
1160         runtime->hw = snd_cs4231_playback;
1161
1162         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1163         if (err < 0) {
1164                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1165                 return err;
1166         }
1167         chip->playback_substream = substream;
1168         chip->p_periods_sent = 0;
1169         snd_pcm_set_sync(substream);
1170         snd_cs4231_xrate(runtime);
1171
1172         return 0;
1173 }
1174
1175 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1176 {
1177         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1178         struct snd_pcm_runtime *runtime = substream->runtime;
1179         int err;
1180
1181         runtime->hw = snd_cs4231_capture;
1182
1183         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1184         if (err < 0) {
1185                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1186                 return err;
1187         }
1188         chip->capture_substream = substream;
1189         chip->c_periods_sent = 0;
1190         snd_pcm_set_sync(substream);
1191         snd_cs4231_xrate(runtime);
1192
1193         return 0;
1194 }
1195
1196 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1197 {
1198         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1199
1200         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1201         chip->playback_substream = NULL;
1202
1203         return 0;
1204 }
1205
1206 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1207 {
1208         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1209
1210         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1211         chip->capture_substream = NULL;
1212
1213         return 0;
1214 }
1215
1216 /* XXX We can do some power-management, in particular on EBUS using
1217  * XXX the audio AUXIO register...
1218  */
1219
1220 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1221         .open           =       snd_cs4231_playback_open,
1222         .close          =       snd_cs4231_playback_close,
1223         .ioctl          =       snd_pcm_lib_ioctl,
1224         .hw_params      =       snd_cs4231_playback_hw_params,
1225         .hw_free        =       snd_pcm_lib_free_pages,
1226         .prepare        =       snd_cs4231_playback_prepare,
1227         .trigger        =       snd_cs4231_trigger,
1228         .pointer        =       snd_cs4231_playback_pointer,
1229 };
1230
1231 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1232         .open           =       snd_cs4231_capture_open,
1233         .close          =       snd_cs4231_capture_close,
1234         .ioctl          =       snd_pcm_lib_ioctl,
1235         .hw_params      =       snd_cs4231_capture_hw_params,
1236         .hw_free        =       snd_pcm_lib_free_pages,
1237         .prepare        =       snd_cs4231_capture_prepare,
1238         .trigger        =       snd_cs4231_trigger,
1239         .pointer        =       snd_cs4231_capture_pointer,
1240 };
1241
1242 static int __init snd_cs4231_pcm(struct snd_card *card)
1243 {
1244         struct snd_cs4231 *chip = card->private_data;
1245         struct snd_pcm *pcm;
1246         int err;
1247
1248         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1249         if (err < 0)
1250                 return err;
1251
1252         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1253                         &snd_cs4231_playback_ops);
1254         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1255                         &snd_cs4231_capture_ops);
1256
1257         /* global setup */
1258         pcm->private_data = chip;
1259         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1260         strcpy(pcm->name, "CS4231");
1261
1262         chip->p_dma.preallocate(chip, pcm);
1263
1264         chip->pcm = pcm;
1265
1266         return 0;
1267 }
1268
1269 static int __init snd_cs4231_timer(struct snd_card *card)
1270 {
1271         struct snd_cs4231 *chip = card->private_data;
1272         struct snd_timer *timer;
1273         struct snd_timer_id tid;
1274         int err;
1275
1276         /* Timer initialization */
1277         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1278         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1279         tid.card = card->number;
1280         tid.device = 0;
1281         tid.subdevice = 0;
1282         err = snd_timer_new(card, "CS4231", &tid, &timer);
1283         if (err < 0)
1284                 return err;
1285         strcpy(timer->name, "CS4231");
1286         timer->private_data = chip;
1287         timer->hw = snd_cs4231_timer_table;
1288         chip->timer = timer;
1289
1290         return 0;
1291 }
1292
1293 /*
1294  *  MIXER part
1295  */
1296
1297 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1298                                struct snd_ctl_elem_info *uinfo)
1299 {
1300         static char *texts[4] = {
1301                 "Line", "CD", "Mic", "Mix"
1302         };
1303
1304         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1305         uinfo->count = 2;
1306         uinfo->value.enumerated.items = 4;
1307         if (uinfo->value.enumerated.item > 3)
1308                 uinfo->value.enumerated.item = 3;
1309         strcpy(uinfo->value.enumerated.name,
1310                 texts[uinfo->value.enumerated.item]);
1311
1312         return 0;
1313 }
1314
1315 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1316                               struct snd_ctl_elem_value *ucontrol)
1317 {
1318         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1319         unsigned long flags;
1320
1321         spin_lock_irqsave(&chip->lock, flags);
1322         ucontrol->value.enumerated.item[0] =
1323                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1324         ucontrol->value.enumerated.item[1] =
1325                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1326         spin_unlock_irqrestore(&chip->lock, flags);
1327
1328         return 0;
1329 }
1330
1331 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1332                               struct snd_ctl_elem_value *ucontrol)
1333 {
1334         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1335         unsigned long flags;
1336         unsigned short left, right;
1337         int change;
1338
1339         if (ucontrol->value.enumerated.item[0] > 3 ||
1340             ucontrol->value.enumerated.item[1] > 3)
1341                 return -EINVAL;
1342         left = ucontrol->value.enumerated.item[0] << 6;
1343         right = ucontrol->value.enumerated.item[1] << 6;
1344
1345         spin_lock_irqsave(&chip->lock, flags);
1346
1347         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1348         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1349         change = left != chip->image[CS4231_LEFT_INPUT] ||
1350                  right != chip->image[CS4231_RIGHT_INPUT];
1351         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1352         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1353
1354         spin_unlock_irqrestore(&chip->lock, flags);
1355
1356         return change;
1357 }
1358
1359 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1360                                   struct snd_ctl_elem_info *uinfo)
1361 {
1362         int mask = (kcontrol->private_value >> 16) & 0xff;
1363
1364         uinfo->type = (mask == 1) ?
1365                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1366         uinfo->count = 1;
1367         uinfo->value.integer.min = 0;
1368         uinfo->value.integer.max = mask;
1369
1370         return 0;
1371 }
1372
1373 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1374                                  struct snd_ctl_elem_value *ucontrol)
1375 {
1376         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1377         unsigned long flags;
1378         int reg = kcontrol->private_value & 0xff;
1379         int shift = (kcontrol->private_value >> 8) & 0xff;
1380         int mask = (kcontrol->private_value >> 16) & 0xff;
1381         int invert = (kcontrol->private_value >> 24) & 0xff;
1382
1383         spin_lock_irqsave(&chip->lock, flags);
1384
1385         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1386
1387         spin_unlock_irqrestore(&chip->lock, flags);
1388
1389         if (invert)
1390                 ucontrol->value.integer.value[0] =
1391                         (mask - ucontrol->value.integer.value[0]);
1392
1393         return 0;
1394 }
1395
1396 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1397                                  struct snd_ctl_elem_value *ucontrol)
1398 {
1399         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1400         unsigned long flags;
1401         int reg = kcontrol->private_value & 0xff;
1402         int shift = (kcontrol->private_value >> 8) & 0xff;
1403         int mask = (kcontrol->private_value >> 16) & 0xff;
1404         int invert = (kcontrol->private_value >> 24) & 0xff;
1405         int change;
1406         unsigned short val;
1407
1408         val = (ucontrol->value.integer.value[0] & mask);
1409         if (invert)
1410                 val = mask - val;
1411         val <<= shift;
1412
1413         spin_lock_irqsave(&chip->lock, flags);
1414
1415         val = (chip->image[reg] & ~(mask << shift)) | val;
1416         change = val != chip->image[reg];
1417         snd_cs4231_out(chip, reg, val);
1418
1419         spin_unlock_irqrestore(&chip->lock, flags);
1420
1421         return change;
1422 }
1423
1424 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1425                                   struct snd_ctl_elem_info *uinfo)
1426 {
1427         int mask = (kcontrol->private_value >> 24) & 0xff;
1428
1429         uinfo->type = mask == 1 ?
1430                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1431         uinfo->count = 2;
1432         uinfo->value.integer.min = 0;
1433         uinfo->value.integer.max = mask;
1434
1435         return 0;
1436 }
1437
1438 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1439                                  struct snd_ctl_elem_value *ucontrol)
1440 {
1441         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1442         unsigned long flags;
1443         int left_reg = kcontrol->private_value & 0xff;
1444         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1445         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1446         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1447         int mask = (kcontrol->private_value >> 24) & 0xff;
1448         int invert = (kcontrol->private_value >> 22) & 1;
1449
1450         spin_lock_irqsave(&chip->lock, flags);
1451
1452         ucontrol->value.integer.value[0] =
1453                 (chip->image[left_reg] >> shift_left) & mask;
1454         ucontrol->value.integer.value[1] =
1455                 (chip->image[right_reg] >> shift_right) & mask;
1456
1457         spin_unlock_irqrestore(&chip->lock, flags);
1458
1459         if (invert) {
1460                 ucontrol->value.integer.value[0] =
1461                         (mask - ucontrol->value.integer.value[0]);
1462                 ucontrol->value.integer.value[1] =
1463                         (mask - ucontrol->value.integer.value[1]);
1464         }
1465
1466         return 0;
1467 }
1468
1469 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1470                                  struct snd_ctl_elem_value *ucontrol)
1471 {
1472         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1473         unsigned long flags;
1474         int left_reg = kcontrol->private_value & 0xff;
1475         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1476         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1477         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1478         int mask = (kcontrol->private_value >> 24) & 0xff;
1479         int invert = (kcontrol->private_value >> 22) & 1;
1480         int change;
1481         unsigned short val1, val2;
1482
1483         val1 = ucontrol->value.integer.value[0] & mask;
1484         val2 = ucontrol->value.integer.value[1] & mask;
1485         if (invert) {
1486                 val1 = mask - val1;
1487                 val2 = mask - val2;
1488         }
1489         val1 <<= shift_left;
1490         val2 <<= shift_right;
1491
1492         spin_lock_irqsave(&chip->lock, flags);
1493
1494         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1495         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1496         change = val1 != chip->image[left_reg];
1497         change |= val2 != chip->image[right_reg];
1498         snd_cs4231_out(chip, left_reg, val1);
1499         snd_cs4231_out(chip, right_reg, val2);
1500
1501         spin_unlock_irqrestore(&chip->lock, flags);
1502
1503         return change;
1504 }
1505
1506 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1507 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1508   .info = snd_cs4231_info_single,       \
1509   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1510   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1511
1512 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1513                         shift_right, mask, invert) \
1514 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1515   .info = snd_cs4231_info_double,       \
1516   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1517   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1518                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1519
1520 static struct snd_kcontrol_new snd_cs4231_controls[] __initdata = {
1521 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1522                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1523 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1524                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1525 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1526                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1527 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1528                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1529 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1530                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1531 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1532                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1533 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1534                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1535 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1536                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1537 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1538 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1539 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1540 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1541 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1542                 15, 0),
1543 {
1544         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1545         .name   = "Capture Source",
1546         .info   = snd_cs4231_info_mux,
1547         .get    = snd_cs4231_get_mux,
1548         .put    = snd_cs4231_put_mux,
1549 },
1550 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1551                 1, 0),
1552 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1553 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1554 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1555 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1556 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1557 };
1558
1559 static int __init snd_cs4231_mixer(struct snd_card *card)
1560 {
1561         struct snd_cs4231 *chip = card->private_data;
1562         int err, idx;
1563
1564         snd_assert(chip != NULL && chip->pcm != NULL, 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);