sound/sparc/cs4231.c

   1 /*
   2  * Driver for CS4231 sound chips found on Sparcs.
   3  * Copyright (C) 2002, 2008 David S. Miller <davem@davemloft.net>
   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/delay.h>
  14 #include <linux/init.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/moduleparam.h>
  17 #include <linux/irq.h>
  18 #include <linux/io.h>
  19 #include <linux/of.h>
  20 #include <linux/of_device.h>
  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 #endif
  33
  34 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
  35 #define EBUS_SUPPORT
  36 #include <linux/pci.h>
  37 #include <asm/ebus_dma.h>
  38 #endif
  39
  40 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  41 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  42 /* Enable this card */
  43 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  44
  45 module_param_array(index, int, NULL, 0444);
  46 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
  47 module_param_array(id, charp, NULL, 0444);
  48 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
  49 module_param_array(enable, bool, NULL, 0444);
  50 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
  51 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
  52 MODULE_DESCRIPTION("Sun CS4231");
  53 MODULE_LICENSE("GPL");
  54 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
  55
  56 #ifdef SBUS_SUPPORT
  57 struct sbus_dma_info {
  58        spinlock_t       lock;   /* DMA access lock */
  59        int              dir;
  60        void __iomem     *regs;
  61 };
  62 #endif
  63
  64 struct snd_cs4231;
  65 struct cs4231_dma_control {
  66         void            (*prepare)(struct cs4231_dma_control *dma_cont,
  67                                    int dir);
  68         void            (*enable)(struct cs4231_dma_control *dma_cont, int on);
  69         int             (*request)(struct cs4231_dma_control *dma_cont,
  70                                    dma_addr_t bus_addr, size_t len);
  71         unsigned int    (*address)(struct cs4231_dma_control *dma_cont);
  72 #ifdef EBUS_SUPPORT
  73         struct          ebus_dma_info   ebus_info;
  74 #endif
  75 #ifdef SBUS_SUPPORT
  76         struct          sbus_dma_info   sbus_info;
  77 #endif
  78 };
  79
  80 struct snd_cs4231 {
  81         spinlock_t              lock;   /* registers access lock */
  82         void __iomem            *port;
  83
  84         struct cs4231_dma_control       p_dma;
  85         struct cs4231_dma_control       c_dma;
  86
  87         u32                     flags;
  88 #define CS4231_FLAG_EBUS        0x00000001
  89 #define CS4231_FLAG_PLAYBACK    0x00000002
  90 #define CS4231_FLAG_CAPTURE     0x00000004
  91
  92         struct snd_card         *card;
  93         struct snd_pcm          *pcm;
  94         struct snd_pcm_substream        *playback_substream;
  95         unsigned int            p_periods_sent;
  96         struct snd_pcm_substream        *capture_substream;
  97         unsigned int            c_periods_sent;
  98         struct snd_timer        *timer;
  99
 100         unsigned short mode;
 101 #define CS4231_MODE_NONE        0x0000
 102 #define CS4231_MODE_PLAY        0x0001
 103 #define CS4231_MODE_RECORD      0x0002
 104 #define CS4231_MODE_TIMER       0x0004
 105 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
 106                                  CS4231_MODE_TIMER)
 107
 108         unsigned char           image[32];      /* registers image */
 109         int                     mce_bit;
 110         int                     calibrate_mute;
 111         struct mutex            mce_mutex;      /* mutex for mce register */
 112         struct mutex            open_mutex;     /* mutex for ALSA open/close */
 113
 114         struct platform_device  *op;
 115         unsigned int            irq[2];
 116         unsigned int            regs_size;
 117         struct snd_cs4231       *next;
 118 };
 119
 120 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
 121  * now....  -DaveM
 122  */
 123
 124 /* IO ports */
 125 #include <sound/cs4231-regs.h>
 126
 127 /* XXX offsets are different than PC ISA chips... */
 128 #define CS4231U(chip, x)        ((chip)->port + ((c_d_c_CS4231##x) << 2))
 129
 130 /* SBUS DMA register defines.  */
 131
 132 #define APCCSR  0x10UL  /* APC DMA CSR */
 133 #define APCCVA  0x20UL  /* APC Capture DMA Address */
 134 #define APCCC   0x24UL  /* APC Capture Count */
 135 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
 136 #define APCCNC  0x2cUL  /* APC Capture Next Count */
 137 #define APCPVA  0x30UL  /* APC Play DMA Address */
 138 #define APCPC   0x34UL  /* APC Play Count */
 139 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
 140 #define APCPNC  0x3cUL  /* APC Play Next Count */
 141
 142 /* Defines for SBUS DMA-routines */
 143
 144 #define APCVA  0x0UL    /* APC DMA Address */
 145 #define APCC   0x4UL    /* APC Count */
 146 #define APCNVA 0x8UL    /* APC DMA Next Address */
 147 #define APCNC  0xcUL    /* APC Next Count */
 148 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
 149 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
 150
 151 /* APCCSR bits */
 152
 153 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
 154 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
 155 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
 156 #define APC_GENL_INT    0x100000 /* General interrupt */
 157 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
 158 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
 159 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
 160 #define APC_XINT_GENL   0x10000  /* Error ext intr */
 161 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
 162 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
 163 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
 164 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
 165 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
 166 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
 167 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
 168 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
 169 #define APC_PPAUSE      0x80     /* Pause the play DMA */
 170 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
 171 #define APC_CDC_RESET   0x20     /* CODEC RESET */
 172 #define APC_PDMA_READY  0x08     /* Play DMA Go */
 173 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
 174 #define APC_CHIP_RESET  0x01     /* Reset the chip */
 175
 176 /* EBUS DMA register offsets  */
 177
 178 #define EBDMA_CSR       0x00UL  /* Control/Status */
 179 #define EBDMA_ADDR      0x04UL  /* DMA Address */
 180 #define EBDMA_COUNT     0x08UL  /* DMA Count */
 181
 182 /*
 183  *  Some variables
 184  */
 185
 186 static unsigned char freq_bits[14] = {
 187         /* 5510 */      0x00 | CS4231_XTAL2,
 188         /* 6620 */      0x0E | CS4231_XTAL2,
 189         /* 8000 */      0x00 | CS4231_XTAL1,
 190         /* 9600 */      0x0E | CS4231_XTAL1,
 191         /* 11025 */     0x02 | CS4231_XTAL2,
 192         /* 16000 */     0x02 | CS4231_XTAL1,
 193         /* 18900 */     0x04 | CS4231_XTAL2,
 194         /* 22050 */     0x06 | CS4231_XTAL2,
 195         /* 27042 */     0x04 | CS4231_XTAL1,
 196         /* 32000 */     0x06 | CS4231_XTAL1,
 197         /* 33075 */     0x0C | CS4231_XTAL2,
 198         /* 37800 */     0x08 | CS4231_XTAL2,
 199         /* 44100 */     0x0A | CS4231_XTAL2,
 200         /* 48000 */     0x0C | CS4231_XTAL1
 201 };
 202
 203 static unsigned int rates[14] = {
 204         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
 205         27042, 32000, 33075, 37800, 44100, 48000
 206 };
 207
 208 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 209         .count  = ARRAY_SIZE(rates),
 210         .list   = rates,
 211 };
 212
 213 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
 214 {
 215         return snd_pcm_hw_constraint_list(runtime, 0,
 216                                           SNDRV_PCM_HW_PARAM_RATE,
 217                                           &hw_constraints_rates);
 218 }
 219
 220 static unsigned char snd_cs4231_original_image[32] =
 221 {
 222         0x00,                   /* 00/00 - lic */
 223         0x00,                   /* 01/01 - ric */
 224         0x9f,                   /* 02/02 - la1ic */
 225         0x9f,                   /* 03/03 - ra1ic */
 226         0x9f,                   /* 04/04 - la2ic */
 227         0x9f,                   /* 05/05 - ra2ic */
 228         0xbf,                   /* 06/06 - loc */
 229         0xbf,                   /* 07/07 - roc */
 230         0x20,                   /* 08/08 - pdfr */
 231         CS4231_AUTOCALIB,       /* 09/09 - ic */
 232         0x00,                   /* 0a/10 - pc */
 233         0x00,                   /* 0b/11 - ti */
 234         CS4231_MODE2,           /* 0c/12 - mi */
 235         0x00,                   /* 0d/13 - lbc */
 236         0x00,                   /* 0e/14 - pbru */
 237         0x00,                   /* 0f/15 - pbrl */
 238         0x80,                   /* 10/16 - afei */
 239         0x01,                   /* 11/17 - afeii */
 240         0x9f,                   /* 12/18 - llic */
 241         0x9f,                   /* 13/19 - rlic */
 242         0x00,                   /* 14/20 - tlb */
 243         0x00,                   /* 15/21 - thb */
 244         0x00,                   /* 16/22 - la3mic/reserved */
 245         0x00,                   /* 17/23 - ra3mic/reserved */
 246         0x00,                   /* 18/24 - afs */
 247         0x00,                   /* 19/25 - lamoc/version */
 248         0x00,                   /* 1a/26 - mioc */
 249         0x00,                   /* 1b/27 - ramoc/reserved */
 250         0x20,                   /* 1c/28 - cdfr */
 251         0x00,                   /* 1d/29 - res4 */
 252         0x00,                   /* 1e/30 - cbru */
 253         0x00,                   /* 1f/31 - cbrl */
 254 };
 255
 256 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
 257 {
 258         if (cp->flags & CS4231_FLAG_EBUS)
 259                 return readb(reg_addr);
 260         else
 261                 return sbus_readb(reg_addr);
 262 }
 263
 264 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
 265                             void __iomem *reg_addr)
 266 {
 267         if (cp->flags & CS4231_FLAG_EBUS)
 268                 return writeb(val, reg_addr);
 269         else
 270                 return sbus_writeb(val, reg_addr);
 271 }
 272
 273 /*
 274  *  Basic I/O functions
 275  */
 276
 277 static void snd_cs4231_ready(struct snd_cs4231 *chip)
 278 {
 279         int timeout;
 280
 281         for (timeout = 250; timeout > 0; timeout--) {
 282                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 283                 if ((val & CS4231_INIT) == 0)
 284                         break;
 285                 udelay(100);
 286         }
 287 }
 288
 289 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
 290                             unsigned char value)
 291 {
 292         snd_cs4231_ready(chip);
 293 #ifdef CONFIG_SND_DEBUG
 294         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 295                 snd_printdd("out: auto calibration time out - reg = 0x%x, "
 296                             "value = 0x%x\n",
 297                             reg, value);
 298 #endif
 299         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 300         wmb();
 301         __cs4231_writeb(chip, value, CS4231U(chip, REG));
 302         mb();
 303 }
 304
 305 static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
 306                      unsigned char mask, unsigned char value)
 307 {
 308         unsigned char tmp = (chip->image[reg] & mask) | value;
 309
 310         chip->image[reg] = tmp;
 311         if (!chip->calibrate_mute)
 312                 snd_cs4231_dout(chip, reg, tmp);
 313 }
 314
 315 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
 316                            unsigned char value)
 317 {
 318         snd_cs4231_dout(chip, reg, value);
 319         chip->image[reg] = value;
 320         mb();
 321 }
 322
 323 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
 324 {
 325         snd_cs4231_ready(chip);
 326 #ifdef CONFIG_SND_DEBUG
 327         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 328                 snd_printdd("in: auto calibration time out - reg = 0x%x\n",
 329                             reg);
 330 #endif
 331         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 332         mb();
 333         return __cs4231_readb(chip, CS4231U(chip, REG));
 334 }
 335
 336 /*
 337  *  CS4231 detection / MCE routines
 338  */
 339
 340 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 341 {
 342         int timeout;
 343
 344         /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
 345         for (timeout = 5; timeout > 0; timeout--)
 346                 __cs4231_readb(chip, CS4231U(chip, REGSEL));
 347
 348         /* end of cleanup sequence */
 349         for (timeout = 500; timeout > 0; timeout--) {
 350                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 351                 if ((val & CS4231_INIT) == 0)
 352                         break;
 353                 msleep(1);
 354         }
 355 }
 356
 357 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 358 {
 359         unsigned long flags;
 360         int timeout;
 361
 362         spin_lock_irqsave(&chip->lock, flags);
 363         snd_cs4231_ready(chip);
 364 #ifdef CONFIG_SND_DEBUG
 365         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 366                 snd_printdd("mce_up - auto calibration time out (0)\n");
 367 #endif
 368         chip->mce_bit |= CS4231_MCE;
 369         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 370         if (timeout == 0x80)
 371                 snd_printdd("mce_up [%p]: serious init problem - "
 372                             "codec still busy\n",
 373                             chip->port);
 374         if (!(timeout & CS4231_MCE))
 375                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
 376                                 CS4231U(chip, REGSEL));
 377         spin_unlock_irqrestore(&chip->lock, flags);
 378 }
 379
 380 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 381 {
 382         unsigned long flags, timeout;
 383         int reg;
 384
 385         snd_cs4231_busy_wait(chip);
 386         spin_lock_irqsave(&chip->lock, flags);
 387 #ifdef CONFIG_SND_DEBUG
 388         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 389                 snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
 390                             CS4231U(chip, REGSEL));
 391 #endif
 392         chip->mce_bit &= ~CS4231_MCE;
 393         reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 394         __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
 395                         CS4231U(chip, REGSEL));
 396         if (reg == 0x80)
 397                 snd_printdd("mce_down [%p]: serious init problem "
 398                             "- codec still busy\n", chip->port);
 399         if ((reg & CS4231_MCE) == 0) {
 400                 spin_unlock_irqrestore(&chip->lock, flags);
 401                 return;
 402         }
 403
 404         /*
 405          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 406          */
 407         timeout = jiffies + msecs_to_jiffies(250);
 408         do {
 409                 spin_unlock_irqrestore(&chip->lock, flags);
 410                 msleep(1);
 411                 spin_lock_irqsave(&chip->lock, flags);
 412                 reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
 413                 reg &= CS4231_CALIB_IN_PROGRESS;
 414         } while (reg && time_before(jiffies, timeout));
 415         spin_unlock_irqrestore(&chip->lock, flags);
 416
 417         if (reg)
 418                 snd_printk(KERN_ERR
 419                            "mce_down - auto calibration time out (2)\n");
 420 }
 421
 422 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
 423                                    struct snd_pcm_substream *substream,
 424                                    unsigned int *periods_sent)
 425 {
 426         struct snd_pcm_runtime *runtime = substream->runtime;
 427
 428         while (1) {
 429                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
 430                 unsigned int offset = period_size * (*periods_sent);
 431
 432                 if (WARN_ON(period_size >= (1 << 24)))
 433                         return;
 434
 435                 if (dma_cont->request(dma_cont,
 436                                       runtime->dma_addr + offset, period_size))
 437                         return;
 438                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 439         }
 440 }
 441
 442 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
 443                                unsigned int what, int on)
 444 {
 445         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 446         struct cs4231_dma_control *dma_cont;
 447
 448         if (what & CS4231_PLAYBACK_ENABLE) {
 449                 dma_cont = &chip->p_dma;
 450                 if (on) {
 451                         dma_cont->prepare(dma_cont, 0);
 452                         dma_cont->enable(dma_cont, 1);
 453                         snd_cs4231_advance_dma(dma_cont,
 454                                 chip->playback_substream,
 455                                 &chip->p_periods_sent);
 456                 } else {
 457                         dma_cont->enable(dma_cont, 0);
 458                 }
 459         }
 460         if (what & CS4231_RECORD_ENABLE) {
 461                 dma_cont = &chip->c_dma;
 462                 if (on) {
 463                         dma_cont->prepare(dma_cont, 1);
 464                         dma_cont->enable(dma_cont, 1);
 465                         snd_cs4231_advance_dma(dma_cont,
 466                                 chip->capture_substream,
 467                                 &chip->c_periods_sent);
 468                 } else {
 469                         dma_cont->enable(dma_cont, 0);
 470                 }
 471         }
 472 }
 473
 474 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
 475 {
 476         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 477         int result = 0;
 478
 479         switch (cmd) {
 480         case SNDRV_PCM_TRIGGER_START:
 481         case SNDRV_PCM_TRIGGER_STOP:
 482         {
 483                 unsigned int what = 0;
 484                 struct snd_pcm_substream *s;
 485                 unsigned long flags;
 486
 487                 snd_pcm_group_for_each_entry(s, substream) {
 488                         if (s == chip->playback_substream) {
 489                                 what |= CS4231_PLAYBACK_ENABLE;
 490                                 snd_pcm_trigger_done(s, substream);
 491                         } else if (s == chip->capture_substream) {
 492                                 what |= CS4231_RECORD_ENABLE;
 493                                 snd_pcm_trigger_done(s, substream);
 494                         }
 495                 }
 496
 497                 spin_lock_irqsave(&chip->lock, flags);
 498                 if (cmd == SNDRV_PCM_TRIGGER_START) {
 499                         cs4231_dma_trigger(substream, what, 1);
 500                         chip->image[CS4231_IFACE_CTRL] |= what;
 501                 } else {
 502                         cs4231_dma_trigger(substream, what, 0);
 503                         chip->image[CS4231_IFACE_CTRL] &= ~what;
 504                 }
 505                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 506                                chip->image[CS4231_IFACE_CTRL]);
 507                 spin_unlock_irqrestore(&chip->lock, flags);
 508                 break;
 509         }
 510         default:
 511                 result = -EINVAL;
 512                 break;
 513         }
 514
 515         return result;
 516 }
 517
 518 /*
 519  *  CODEC I/O
 520  */
 521
 522 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 523 {
 524         int i;
 525
 526         for (i = 0; i < 14; i++)
 527                 if (rate == rates[i])
 528                         return freq_bits[i];
 529
 530         return freq_bits[13];
 531 }
 532
 533 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
 534                                            int channels)
 535 {
 536         unsigned char rformat;
 537
 538         rformat = CS4231_LINEAR_8;
 539         switch (format) {
 540         case SNDRV_PCM_FORMAT_MU_LAW:
 541                 rformat = CS4231_ULAW_8;
 542                 break;
 543         case SNDRV_PCM_FORMAT_A_LAW:
 544                 rformat = CS4231_ALAW_8;
 545                 break;
 546         case SNDRV_PCM_FORMAT_S16_LE:
 547                 rformat = CS4231_LINEAR_16;
 548                 break;
 549         case SNDRV_PCM_FORMAT_S16_BE:
 550                 rformat = CS4231_LINEAR_16_BIG;
 551                 break;
 552         case SNDRV_PCM_FORMAT_IMA_ADPCM:
 553                 rformat = CS4231_ADPCM_16;
 554                 break;
 555         }
 556         if (channels > 1)
 557                 rformat |= CS4231_STEREO;
 558         return rformat;
 559 }
 560
 561 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 562 {
 563         unsigned long flags;
 564
 565         mute = mute ? 1 : 0;
 566         spin_lock_irqsave(&chip->lock, flags);
 567         if (chip->calibrate_mute == mute) {
 568                 spin_unlock_irqrestore(&chip->lock, flags);
 569                 return;
 570         }
 571         if (!mute) {
 572                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 573                                 chip->image[CS4231_LEFT_INPUT]);
 574                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 575                                 chip->image[CS4231_RIGHT_INPUT]);
 576                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
 577                                 chip->image[CS4231_LOOPBACK]);
 578         }
 579         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 580                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 581         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 582                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 583         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 584                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 585         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 586                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 587         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 588                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 589         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 590                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 591         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 592                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 593         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 594                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 595         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 596                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 597         chip->calibrate_mute = mute;
 598         spin_unlock_irqrestore(&chip->lock, flags);
 599 }
 600
 601 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 602                                        struct snd_pcm_hw_params *params,
 603                                        unsigned char pdfr)
 604 {
 605         unsigned long flags;
 606
 607         mutex_lock(&chip->mce_mutex);
 608         snd_cs4231_calibrate_mute(chip, 1);
 609
 610         snd_cs4231_mce_up(chip);
 611
 612         spin_lock_irqsave(&chip->lock, flags);
 613         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 614                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 615                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 616                        pdfr);
 617         spin_unlock_irqrestore(&chip->lock, flags);
 618
 619         snd_cs4231_mce_down(chip);
 620
 621         snd_cs4231_calibrate_mute(chip, 0);
 622         mutex_unlock(&chip->mce_mutex);
 623 }
 624
 625 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 626                                       struct snd_pcm_hw_params *params,
 627                                       unsigned char cdfr)
 628 {
 629         unsigned long flags;
 630
 631         mutex_lock(&chip->mce_mutex);
 632         snd_cs4231_calibrate_mute(chip, 1);
 633
 634         snd_cs4231_mce_up(chip);
 635
 636         spin_lock_irqsave(&chip->lock, flags);
 637         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 638                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 639                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 640                                (cdfr & 0x0f));
 641                 spin_unlock_irqrestore(&chip->lock, flags);
 642                 snd_cs4231_mce_down(chip);
 643                 snd_cs4231_mce_up(chip);
 644                 spin_lock_irqsave(&chip->lock, flags);
 645         }
 646         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 647         spin_unlock_irqrestore(&chip->lock, flags);
 648
 649         snd_cs4231_mce_down(chip);
 650
 651         snd_cs4231_calibrate_mute(chip, 0);
 652         mutex_unlock(&chip->mce_mutex);
 653 }
 654
 655 /*
 656  *  Timer interface
 657  */
 658
 659 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
 660 {
 661         struct snd_cs4231 *chip = snd_timer_chip(timer);
 662
 663         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 664 }
 665
 666 static int snd_cs4231_timer_start(struct snd_timer *timer)
 667 {
 668         unsigned long flags;
 669         unsigned int ticks;
 670         struct snd_cs4231 *chip = snd_timer_chip(timer);
 671
 672         spin_lock_irqsave(&chip->lock, flags);
 673         ticks = timer->sticks;
 674         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 675             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 676             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 677                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 678                                chip->image[CS4231_TIMER_HIGH] =
 679                                (unsigned char) (ticks >> 8));
 680                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
 681                                chip->image[CS4231_TIMER_LOW] =
 682                                (unsigned char) ticks);
 683                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 684                                chip->image[CS4231_ALT_FEATURE_1] |
 685                                         CS4231_TIMER_ENABLE);
 686         }
 687         spin_unlock_irqrestore(&chip->lock, flags);
 688
 689         return 0;
 690 }
 691
 692 static int snd_cs4231_timer_stop(struct snd_timer *timer)
 693 {
 694         unsigned long flags;
 695         struct snd_cs4231 *chip = snd_timer_chip(timer);
 696
 697         spin_lock_irqsave(&chip->lock, flags);
 698         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
 699         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 700                        chip->image[CS4231_ALT_FEATURE_1]);
 701         spin_unlock_irqrestore(&chip->lock, flags);
 702
 703         return 0;
 704 }
 705
 706 static void snd_cs4231_init(struct snd_cs4231 *chip)
 707 {
 708         unsigned long flags;
 709
 710         snd_cs4231_mce_down(chip);
 711
 712 #ifdef SNDRV_DEBUG_MCE
 713         snd_printdd("init: (1)\n");
 714 #endif
 715         snd_cs4231_mce_up(chip);
 716         spin_lock_irqsave(&chip->lock, flags);
 717         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 718                                             CS4231_PLAYBACK_PIO |
 719                                             CS4231_RECORD_ENABLE |
 720                                             CS4231_RECORD_PIO |
 721                                             CS4231_CALIB_MODE);
 722         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 723         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 724         spin_unlock_irqrestore(&chip->lock, flags);
 725         snd_cs4231_mce_down(chip);
 726
 727 #ifdef SNDRV_DEBUG_MCE
 728         snd_printdd("init: (2)\n");
 729 #endif
 730
 731         snd_cs4231_mce_up(chip);
 732         spin_lock_irqsave(&chip->lock, flags);
 733         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 734                         chip->image[CS4231_ALT_FEATURE_1]);
 735         spin_unlock_irqrestore(&chip->lock, flags);
 736         snd_cs4231_mce_down(chip);
 737
 738 #ifdef SNDRV_DEBUG_MCE
 739         snd_printdd("init: (3) - afei = 0x%x\n",
 740                     chip->image[CS4231_ALT_FEATURE_1]);
 741 #endif
 742
 743         spin_lock_irqsave(&chip->lock, flags);
 744         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
 745                         chip->image[CS4231_ALT_FEATURE_2]);
 746         spin_unlock_irqrestore(&chip->lock, flags);
 747
 748         snd_cs4231_mce_up(chip);
 749         spin_lock_irqsave(&chip->lock, flags);
 750         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 751                         chip->image[CS4231_PLAYBK_FORMAT]);
 752         spin_unlock_irqrestore(&chip->lock, flags);
 753         snd_cs4231_mce_down(chip);
 754
 755 #ifdef SNDRV_DEBUG_MCE
 756         snd_printdd("init: (4)\n");
 757 #endif
 758
 759         snd_cs4231_mce_up(chip);
 760         spin_lock_irqsave(&chip->lock, flags);
 761         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 762         spin_unlock_irqrestore(&chip->lock, flags);
 763         snd_cs4231_mce_down(chip);
 764
 765 #ifdef SNDRV_DEBUG_MCE
 766         snd_printdd("init: (5)\n");
 767 #endif
 768 }
 769
 770 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 771 {
 772         unsigned long flags;
 773
 774         mutex_lock(&chip->open_mutex);
 775         if ((chip->mode & mode)) {
 776                 mutex_unlock(&chip->open_mutex);
 777                 return -EAGAIN;
 778         }
 779         if (chip->mode & CS4231_MODE_OPEN) {
 780                 chip->mode |= mode;
 781                 mutex_unlock(&chip->open_mutex);
 782                 return 0;
 783         }
 784         /* ok. now enable and ack CODEC IRQ */
 785         spin_lock_irqsave(&chip->lock, flags);
 786         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 787                        CS4231_RECORD_IRQ |
 788                        CS4231_TIMER_IRQ);
 789         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 790         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 791         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 792
 793         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 794                        CS4231_RECORD_IRQ |
 795                        CS4231_TIMER_IRQ);
 796         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 797
 798         spin_unlock_irqrestore(&chip->lock, flags);
 799
 800         chip->mode = mode;
 801         mutex_unlock(&chip->open_mutex);
 802         return 0;
 803 }
 804
 805 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 806 {
 807         unsigned long flags;
 808
 809         mutex_lock(&chip->open_mutex);
 810         chip->mode &= ~mode;
 811         if (chip->mode & CS4231_MODE_OPEN) {
 812                 mutex_unlock(&chip->open_mutex);
 813                 return;
 814         }
 815         snd_cs4231_calibrate_mute(chip, 1);
 816
 817         /* disable IRQ */
 818         spin_lock_irqsave(&chip->lock, flags);
 819         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 820         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 821         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 822
 823         /* now disable record & playback */
 824
 825         if (chip->image[CS4231_IFACE_CTRL] &
 826             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 827              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 828                 spin_unlock_irqrestore(&chip->lock, flags);
 829                 snd_cs4231_mce_up(chip);
 830                 spin_lock_irqsave(&chip->lock, flags);
 831                 chip->image[CS4231_IFACE_CTRL] &=
 832                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 833                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 834                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 835                                 chip->image[CS4231_IFACE_CTRL]);
 836                 spin_unlock_irqrestore(&chip->lock, flags);
 837                 snd_cs4231_mce_down(chip);
 838                 spin_lock_irqsave(&chip->lock, flags);
 839         }
 840
 841         /* clear IRQ again */
 842         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 843         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 844         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 845         spin_unlock_irqrestore(&chip->lock, flags);
 846
 847         snd_cs4231_calibrate_mute(chip, 0);
 848
 849         chip->mode = 0;
 850         mutex_unlock(&chip->open_mutex);
 851 }
 852
 853 /*
 854  *  timer open/close
 855  */
 856
 857 static int snd_cs4231_timer_open(struct snd_timer *timer)
 858 {
 859         struct snd_cs4231 *chip = snd_timer_chip(timer);
 860         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 861         return 0;
 862 }
 863
 864 static int snd_cs4231_timer_close(struct snd_timer *timer)
 865 {
 866         struct snd_cs4231 *chip = snd_timer_chip(timer);
 867         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 868         return 0;
 869 }
 870
 871 static struct snd_timer_hardware snd_cs4231_timer_table = {
 872         .flags          =       SNDRV_TIMER_HW_AUTO,
 873         .resolution     =       9945,
 874         .ticks          =       65535,
 875         .open           =       snd_cs4231_timer_open,
 876         .close          =       snd_cs4231_timer_close,
 877         .c_resolution   =       snd_cs4231_timer_resolution,
 878         .start          =       snd_cs4231_timer_start,
 879         .stop           =       snd_cs4231_timer_stop,
 880 };
 881
 882 /*
 883  *  ok.. exported functions..
 884  */
 885
 886 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 887                                          struct snd_pcm_hw_params *hw_params)
 888 {
 889         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 890         unsigned char new_pdfr;
 891         int err;
 892
 893         err = snd_pcm_lib_malloc_pages(substream,
 894                                         params_buffer_bytes(hw_params));
 895         if (err < 0)
 896                 return err;
 897         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 898                                          params_channels(hw_params)) |
 899                 snd_cs4231_get_rate(params_rate(hw_params));
 900         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
 901
 902         return 0;
 903 }
 904
 905 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 906 {
 907         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 908         struct snd_pcm_runtime *runtime = substream->runtime;
 909         unsigned long flags;
 910         int ret = 0;
 911
 912         spin_lock_irqsave(&chip->lock, flags);
 913
 914         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 915                                             CS4231_PLAYBACK_PIO);
 916
 917         if (WARN_ON(runtime->period_size > 0xffff + 1)) {
 918                 ret = -EINVAL;
 919                 goto out;
 920         }
 921
 922         chip->p_periods_sent = 0;
 923
 924 out:
 925         spin_unlock_irqrestore(&chip->lock, flags);
 926
 927         return ret;
 928 }
 929
 930 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 931                                         struct snd_pcm_hw_params *hw_params)
 932 {
 933         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 934         unsigned char new_cdfr;
 935         int err;
 936
 937         err = snd_pcm_lib_malloc_pages(substream,
 938                                         params_buffer_bytes(hw_params));
 939         if (err < 0)
 940                 return err;
 941         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 942                                          params_channels(hw_params)) |
 943                 snd_cs4231_get_rate(params_rate(hw_params));
 944         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
 945
 946         return 0;
 947 }
 948
 949 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 950 {
 951         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 952         unsigned long flags;
 953
 954         spin_lock_irqsave(&chip->lock, flags);
 955         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
 956                                             CS4231_RECORD_PIO);
 957
 958
 959         chip->c_periods_sent = 0;
 960         spin_unlock_irqrestore(&chip->lock, flags);
 961
 962         return 0;
 963 }
 964
 965 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 966 {
 967         unsigned long flags;
 968         unsigned char res;
 969
 970         spin_lock_irqsave(&chip->lock, flags);
 971         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 972         spin_unlock_irqrestore(&chip->lock, flags);
 973
 974         /* detect overrange only above 0dB; may be user selectable? */
 975         if (res & (0x08 | 0x02))
 976                 chip->capture_substream->runtime->overrange++;
 977 }
 978
 979 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
 980 {
 981         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
 982                 snd_pcm_period_elapsed(chip->playback_substream);
 983                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
 984                                             &chip->p_periods_sent);
 985         }
 986 }
 987
 988 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
 989 {
 990         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
 991                 snd_pcm_period_elapsed(chip->capture_substream);
 992                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
 993                                             &chip->c_periods_sent);
 994         }
 995 }
 996
 997 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
 998                                         struct snd_pcm_substream *substream)
 999 {
1000         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1001         struct cs4231_dma_control *dma_cont = &chip->p_dma;
1002         size_t ptr;
1003
1004         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1005                 return 0;
1006         ptr = dma_cont->address(dma_cont);
1007         if (ptr != 0)
1008                 ptr -= substream->runtime->dma_addr;
1009
1010         return bytes_to_frames(substream->runtime, ptr);
1011 }
1012
1013 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1014                                         struct snd_pcm_substream *substream)
1015 {
1016         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1017         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1018         size_t ptr;
1019
1020         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1021                 return 0;
1022         ptr = dma_cont->address(dma_cont);
1023         if (ptr != 0)
1024                 ptr -= substream->runtime->dma_addr;
1025
1026         return bytes_to_frames(substream->runtime, ptr);
1027 }
1028
1029 static int snd_cs4231_probe(struct snd_cs4231 *chip)
1030 {
1031         unsigned long flags;
1032         int i;
1033         int id = 0;
1034         int vers = 0;
1035         unsigned char *ptr;
1036
1037         for (i = 0; i < 50; i++) {
1038                 mb();
1039                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1040                         msleep(2);
1041                 else {
1042                         spin_lock_irqsave(&chip->lock, flags);
1043                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1044                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1045                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1046                         spin_unlock_irqrestore(&chip->lock, flags);
1047                         if (id == 0x0a)
1048                                 break;  /* this is valid value */
1049                 }
1050         }
1051         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1052         if (id != 0x0a)
1053                 return -ENODEV; /* no valid device found */
1054
1055         spin_lock_irqsave(&chip->lock, flags);
1056
1057         /* clear any pendings IRQ */
1058         __cs4231_readb(chip, CS4231U(chip, STATUS));
1059         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1060         mb();
1061
1062         spin_unlock_irqrestore(&chip->lock, flags);
1063
1064         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1065         chip->image[CS4231_IFACE_CTRL] =
1066                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1067         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1068         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1069         if (vers & 0x20)
1070                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1071
1072         ptr = (unsigned char *) &chip->image;
1073
1074         snd_cs4231_mce_down(chip);
1075
1076         spin_lock_irqsave(&chip->lock, flags);
1077
1078         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1079                 snd_cs4231_out(chip, i, *ptr++);
1080
1081         spin_unlock_irqrestore(&chip->lock, flags);
1082
1083         snd_cs4231_mce_up(chip);
1084
1085         snd_cs4231_mce_down(chip);
1086
1087         mdelay(2);
1088
1089         return 0;               /* all things are ok.. */
1090 }
1091
1092 static struct snd_pcm_hardware snd_cs4231_playback = {
1093         .info                   = SNDRV_PCM_INFO_MMAP |
1094                                   SNDRV_PCM_INFO_INTERLEAVED |
1095                                   SNDRV_PCM_INFO_MMAP_VALID |
1096                                   SNDRV_PCM_INFO_SYNC_START,
1097         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1098                                   SNDRV_PCM_FMTBIT_A_LAW |
1099                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1100                                   SNDRV_PCM_FMTBIT_U8 |
1101                                   SNDRV_PCM_FMTBIT_S16_LE |
1102                                   SNDRV_PCM_FMTBIT_S16_BE,
1103         .rates                  = SNDRV_PCM_RATE_KNOT |
1104                                   SNDRV_PCM_RATE_8000_48000,
1105         .rate_min               = 5510,
1106         .rate_max               = 48000,
1107         .channels_min           = 1,
1108         .channels_max           = 2,
1109         .buffer_bytes_max       = 32 * 1024,
1110         .period_bytes_min       = 64,
1111         .period_bytes_max       = 32 * 1024,
1112         .periods_min            = 1,
1113         .periods_max            = 1024,
1114 };
1115
1116 static struct snd_pcm_hardware snd_cs4231_capture = {
1117         .info                   = SNDRV_PCM_INFO_MMAP |
1118                                   SNDRV_PCM_INFO_INTERLEAVED |
1119                                   SNDRV_PCM_INFO_MMAP_VALID |
1120                                   SNDRV_PCM_INFO_SYNC_START,
1121         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1122                                   SNDRV_PCM_FMTBIT_A_LAW |
1123                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1124                                   SNDRV_PCM_FMTBIT_U8 |
1125                                   SNDRV_PCM_FMTBIT_S16_LE |
1126                                   SNDRV_PCM_FMTBIT_S16_BE,
1127         .rates                  = SNDRV_PCM_RATE_KNOT |
1128                                   SNDRV_PCM_RATE_8000_48000,
1129         .rate_min               = 5510,
1130         .rate_max               = 48000,
1131         .channels_min           = 1,
1132         .channels_max           = 2,
1133         .buffer_bytes_max       = 32 * 1024,
1134         .period_bytes_min       = 64,
1135         .period_bytes_max       = 32 * 1024,
1136         .periods_min            = 1,
1137         .periods_max            = 1024,
1138 };
1139
1140 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1141 {
1142         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1143         struct snd_pcm_runtime *runtime = substream->runtime;
1144         int err;
1145
1146         runtime->hw = snd_cs4231_playback;
1147
1148         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1149         if (err < 0) {
1150                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1151                 return err;
1152         }
1153         chip->playback_substream = substream;
1154         chip->p_periods_sent = 0;
1155         snd_pcm_set_sync(substream);
1156         snd_cs4231_xrate(runtime);
1157
1158         return 0;
1159 }
1160
1161 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1162 {
1163         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1164         struct snd_pcm_runtime *runtime = substream->runtime;
1165         int err;
1166
1167         runtime->hw = snd_cs4231_capture;
1168
1169         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1170         if (err < 0) {
1171                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1172                 return err;
1173         }
1174         chip->capture_substream = substream;
1175         chip->c_periods_sent = 0;
1176         snd_pcm_set_sync(substream);
1177         snd_cs4231_xrate(runtime);
1178
1179         return 0;
1180 }
1181
1182 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1183 {
1184         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1185
1186         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1187         chip->playback_substream = NULL;
1188
1189         return 0;
1190 }
1191
1192 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1193 {
1194         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1195
1196         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1197         chip->capture_substream = NULL;
1198
1199         return 0;
1200 }
1201
1202 /* XXX We can do some power-management, in particular on EBUS using
1203  * XXX the audio AUXIO register...
1204  */
1205
1206 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1207         .open           =       snd_cs4231_playback_open,
1208         .close          =       snd_cs4231_playback_close,
1209         .ioctl          =       snd_pcm_lib_ioctl,
1210         .hw_params      =       snd_cs4231_playback_hw_params,
1211         .hw_free        =       snd_pcm_lib_free_pages,
1212         .prepare        =       snd_cs4231_playback_prepare,
1213         .trigger        =       snd_cs4231_trigger,
1214         .pointer        =       snd_cs4231_playback_pointer,
1215 };
1216
1217 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1218         .open           =       snd_cs4231_capture_open,
1219         .close          =       snd_cs4231_capture_close,
1220         .ioctl          =       snd_pcm_lib_ioctl,
1221         .hw_params      =       snd_cs4231_capture_hw_params,
1222         .hw_free        =       snd_pcm_lib_free_pages,
1223         .prepare        =       snd_cs4231_capture_prepare,
1224         .trigger        =       snd_cs4231_trigger,
1225         .pointer        =       snd_cs4231_capture_pointer,
1226 };
1227
1228 static int snd_cs4231_pcm(struct snd_card *card)
1229 {
1230         struct snd_cs4231 *chip = card->private_data;
1231         struct snd_pcm *pcm;
1232         int err;
1233
1234         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1235         if (err < 0)
1236                 return err;
1237
1238         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1239                         &snd_cs4231_playback_ops);
1240         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1241                         &snd_cs4231_capture_ops);
1242
1243         /* global setup */
1244         pcm->private_data = chip;
1245         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1246         strcpy(pcm->name, "CS4231");
1247
1248         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1249                                               &chip->op->dev,
1250                                               64 * 1024, 128 * 1024);
1251
1252         chip->pcm = pcm;
1253
1254         return 0;
1255 }
1256
1257 static int snd_cs4231_timer(struct snd_card *card)
1258 {
1259         struct snd_cs4231 *chip = card->private_data;
1260         struct snd_timer *timer;
1261         struct snd_timer_id tid;
1262         int err;
1263
1264         /* Timer initialization */
1265         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1266         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1267         tid.card = card->number;
1268         tid.device = 0;
1269         tid.subdevice = 0;
1270         err = snd_timer_new(card, "CS4231", &tid, &timer);
1271         if (err < 0)
1272                 return err;
1273         strcpy(timer->name, "CS4231");
1274         timer->private_data = chip;
1275         timer->hw = snd_cs4231_timer_table;
1276         chip->timer = timer;
1277
1278         return 0;
1279 }
1280
1281 /*
1282  *  MIXER part
1283  */
1284
1285 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1286                                struct snd_ctl_elem_info *uinfo)
1287 {
1288         static const char * const texts[4] = {
1289                 "Line", "CD", "Mic", "Mix"
1290         };
1291
1292         return snd_ctl_enum_info(uinfo, 2, 4, texts);
1293 }
1294
1295 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1296                               struct snd_ctl_elem_value *ucontrol)
1297 {
1298         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1299         unsigned long flags;
1300
1301         spin_lock_irqsave(&chip->lock, flags);
1302         ucontrol->value.enumerated.item[0] =
1303                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1304         ucontrol->value.enumerated.item[1] =
1305                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1306         spin_unlock_irqrestore(&chip->lock, flags);
1307
1308         return 0;
1309 }
1310
1311 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1312                               struct snd_ctl_elem_value *ucontrol)
1313 {
1314         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1315         unsigned long flags;
1316         unsigned short left, right;
1317         int change;
1318
1319         if (ucontrol->value.enumerated.item[0] > 3 ||
1320             ucontrol->value.enumerated.item[1] > 3)
1321                 return -EINVAL;
1322         left = ucontrol->value.enumerated.item[0] << 6;
1323         right = ucontrol->value.enumerated.item[1] << 6;
1324
1325         spin_lock_irqsave(&chip->lock, flags);
1326
1327         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1328         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1329         change = left != chip->image[CS4231_LEFT_INPUT] ||
1330                  right != chip->image[CS4231_RIGHT_INPUT];
1331         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1332         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1333
1334         spin_unlock_irqrestore(&chip->lock, flags);
1335
1336         return change;
1337 }
1338
1339 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1340                                   struct snd_ctl_elem_info *uinfo)
1341 {
1342         int mask = (kcontrol->private_value >> 16) & 0xff;
1343
1344         uinfo->type = (mask == 1) ?
1345                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1346         uinfo->count = 1;
1347         uinfo->value.integer.min = 0;
1348         uinfo->value.integer.max = mask;
1349
1350         return 0;
1351 }
1352
1353 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1354                                  struct snd_ctl_elem_value *ucontrol)
1355 {
1356         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1357         unsigned long flags;
1358         int reg = kcontrol->private_value & 0xff;
1359         int shift = (kcontrol->private_value >> 8) & 0xff;
1360         int mask = (kcontrol->private_value >> 16) & 0xff;
1361         int invert = (kcontrol->private_value >> 24) & 0xff;
1362
1363         spin_lock_irqsave(&chip->lock, flags);
1364
1365         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1366
1367         spin_unlock_irqrestore(&chip->lock, flags);
1368
1369         if (invert)
1370                 ucontrol->value.integer.value[0] =
1371                         (mask - ucontrol->value.integer.value[0]);
1372
1373         return 0;
1374 }
1375
1376 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1377                                  struct snd_ctl_elem_value *ucontrol)
1378 {
1379         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1380         unsigned long flags;
1381         int reg = kcontrol->private_value & 0xff;
1382         int shift = (kcontrol->private_value >> 8) & 0xff;
1383         int mask = (kcontrol->private_value >> 16) & 0xff;
1384         int invert = (kcontrol->private_value >> 24) & 0xff;
1385         int change;
1386         unsigned short val;
1387
1388         val = (ucontrol->value.integer.value[0] & mask);
1389         if (invert)
1390                 val = mask - val;
1391         val <<= shift;
1392
1393         spin_lock_irqsave(&chip->lock, flags);
1394
1395         val = (chip->image[reg] & ~(mask << shift)) | val;
1396         change = val != chip->image[reg];
1397         snd_cs4231_out(chip, reg, val);
1398
1399         spin_unlock_irqrestore(&chip->lock, flags);
1400
1401         return change;
1402 }
1403
1404 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1405                                   struct snd_ctl_elem_info *uinfo)
1406 {
1407         int mask = (kcontrol->private_value >> 24) & 0xff;
1408
1409         uinfo->type = mask == 1 ?
1410                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1411         uinfo->count = 2;
1412         uinfo->value.integer.min = 0;
1413         uinfo->value.integer.max = mask;
1414
1415         return 0;
1416 }
1417
1418 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1419                                  struct snd_ctl_elem_value *ucontrol)
1420 {
1421         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1422         unsigned long flags;
1423         int left_reg = kcontrol->private_value & 0xff;
1424         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1425         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1426         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1427         int mask = (kcontrol->private_value >> 24) & 0xff;
1428         int invert = (kcontrol->private_value >> 22) & 1;
1429
1430         spin_lock_irqsave(&chip->lock, flags);
1431
1432         ucontrol->value.integer.value[0] =
1433                 (chip->image[left_reg] >> shift_left) & mask;
1434         ucontrol->value.integer.value[1] =
1435                 (chip->image[right_reg] >> shift_right) & mask;
1436
1437         spin_unlock_irqrestore(&chip->lock, flags);
1438
1439         if (invert) {
1440                 ucontrol->value.integer.value[0] =
1441                         (mask - ucontrol->value.integer.value[0]);
1442                 ucontrol->value.integer.value[1] =
1443                         (mask - ucontrol->value.integer.value[1]);
1444         }
1445
1446         return 0;
1447 }
1448
1449 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1450                                  struct snd_ctl_elem_value *ucontrol)
1451 {
1452         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1453         unsigned long flags;
1454         int left_reg = kcontrol->private_value & 0xff;
1455         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1456         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1457         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1458         int mask = (kcontrol->private_value >> 24) & 0xff;
1459         int invert = (kcontrol->private_value >> 22) & 1;
1460         int change;
1461         unsigned short val1, val2;
1462
1463         val1 = ucontrol->value.integer.value[0] & mask;
1464         val2 = ucontrol->value.integer.value[1] & mask;
1465         if (invert) {
1466                 val1 = mask - val1;
1467                 val2 = mask - val2;
1468         }
1469         val1 <<= shift_left;
1470         val2 <<= shift_right;
1471
1472         spin_lock_irqsave(&chip->lock, flags);
1473
1474         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1475         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1476         change = val1 != chip->image[left_reg];
1477         change |= val2 != chip->image[right_reg];
1478         snd_cs4231_out(chip, left_reg, val1);
1479         snd_cs4231_out(chip, right_reg, val2);
1480
1481         spin_unlock_irqrestore(&chip->lock, flags);
1482
1483         return change;
1484 }
1485
1486 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1487 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1488   .info = snd_cs4231_info_single,       \
1489   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1490   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1491
1492 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1493                         shift_right, mask, invert) \
1494 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1495   .info = snd_cs4231_info_double,       \
1496   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1497   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1498                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1499
1500 static struct snd_kcontrol_new snd_cs4231_controls[] = {
1501 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1502                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1503 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1504                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1505 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1506                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1507 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1508                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1509 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1510                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1511 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1512                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1513 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1514                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1515 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1516                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1517 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1518 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1519 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1520 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1521 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1522                 15, 0),
1523 {
1524         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1525         .name   = "Capture Source",
1526         .info   = snd_cs4231_info_mux,
1527         .get    = snd_cs4231_get_mux,
1528         .put    = snd_cs4231_put_mux,
1529 },
1530 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1531                 1, 0),
1532 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1533 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1534 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1535 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1536 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1537 };
1538
1539 static int snd_cs4231_mixer(struct snd_card *card)
1540 {
1541         struct snd_cs4231 *chip = card->private_data;
1542         int err, idx;
1543
1544         if (snd_BUG_ON(!chip || !chip->pcm))
1545                 return -EINVAL;
1546
1547         strcpy(card->mixername, chip->pcm->name);
1548
1549         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1550                 err = snd_ctl_add(card,
1551                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1552                 if (err < 0)
1553                         return err;
1554         }
1555         return 0;
1556 }
1557
1558 static int dev;
1559
1560 static int cs4231_attach_begin(struct platform_device *op,
1561                                struct snd_card **rcard)
1562 {
1563         struct snd_card *card;
1564         struct snd_cs4231 *chip;
1565         int err;
1566
1567         *rcard = NULL;
1568
1569         if (dev >= SNDRV_CARDS)
1570                 return -ENODEV;
1571
1572         if (!enable[dev]) {
1573                 dev++;
1574                 return -ENOENT;
1575         }
1576
1577         err = snd_card_new(&op->dev, index[dev], id[dev], THIS_MODULE,
1578                            sizeof(struct snd_cs4231), &card);
1579         if (err < 0)
1580                 return err;
1581
1582         strcpy(card->driver, "CS4231");
1583         strcpy(card->shortname, "Sun CS4231");
1584
1585         chip = card->private_data;
1586         chip->card = card;
1587
1588         *rcard = card;
1589         return 0;
1590 }
1591
1592 static int cs4231_attach_finish(struct snd_card *card)
1593 {
1594         struct snd_cs4231 *chip = card->private_data;
1595         int err;
1596
1597         err = snd_cs4231_pcm(card);
1598         if (err < 0)
1599                 goto out_err;
1600
1601         err = snd_cs4231_mixer(card);
1602         if (err < 0)
1603                 goto out_err;
1604
1605         err = snd_cs4231_timer(card);
1606         if (err < 0)
1607                 goto out_err;
1608
1609         err = snd_card_register(card);
1610         if (err < 0)
1611                 goto out_err;
1612
1613         dev_set_drvdata(&chip->op->dev, chip);
1614
1615         dev++;
1616         return 0;
1617
1618 out_err:
1619         snd_card_free(card);
1620         return err;
1621 }
1622
1623 #ifdef SBUS_SUPPORT
1624
1625 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1626 {
1627         unsigned long flags;
1628         unsigned char status;
1629         u32 csr;
1630         struct snd_cs4231 *chip = dev_id;
1631
1632         /*This is IRQ is not raised by the cs4231*/
1633         if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1634                 return IRQ_NONE;
1635
1636         /* ACK the APC interrupt. */
1637         csr = sbus_readl(chip->port + APCCSR);
1638
1639         sbus_writel(csr, chip->port + APCCSR);
1640
1641         if ((csr & APC_PDMA_READY) &&
1642             (csr & APC_PLAY_INT) &&
1643             (csr & APC_XINT_PNVA) &&
1644             !(csr & APC_XINT_EMPT))
1645                         snd_cs4231_play_callback(chip);
1646
1647         if ((csr & APC_CDMA_READY) &&
1648             (csr & APC_CAPT_INT) &&
1649             (csr & APC_XINT_CNVA) &&
1650             !(csr & APC_XINT_EMPT))
1651                         snd_cs4231_capture_callback(chip);
1652
1653         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1654
1655         if (status & CS4231_TIMER_IRQ) {
1656                 if (chip->timer)
1657                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1658         }
1659
1660         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1661                 snd_cs4231_overrange(chip);
1662
1663         /* ACK the CS4231 interrupt. */
1664         spin_lock_irqsave(&chip->lock, flags);
1665         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1666         spin_unlock_irqrestore(&chip->lock, flags);
1667
1668         return IRQ_HANDLED;
1669 }
1670
1671 /*
1672  * SBUS DMA routines
1673  */
1674
1675 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1676                             dma_addr_t bus_addr, size_t len)
1677 {
1678         unsigned long flags;
1679         u32 test, csr;
1680         int err;
1681         struct sbus_dma_info *base = &dma_cont->sbus_info;
1682
1683         if (len >= (1 << 24))
1684                 return -EINVAL;
1685         spin_lock_irqsave(&base->lock, flags);
1686         csr = sbus_readl(base->regs + APCCSR);
1687         err = -EINVAL;
1688         test = APC_CDMA_READY;
1689         if (base->dir == APC_PLAY)
1690                 test = APC_PDMA_READY;
1691         if (!(csr & test))
1692                 goto out;
1693         err = -EBUSY;
1694         test = APC_XINT_CNVA;
1695         if (base->dir == APC_PLAY)
1696                 test = APC_XINT_PNVA;
1697         if (!(csr & test))
1698                 goto out;
1699         err = 0;
1700         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1701         sbus_writel(len, base->regs + base->dir + APCNC);
1702 out:
1703         spin_unlock_irqrestore(&base->lock, flags);
1704         return err;
1705 }
1706
1707 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1708 {
1709         unsigned long flags;
1710         u32 csr, test;
1711         struct sbus_dma_info *base = &dma_cont->sbus_info;
1712
1713         spin_lock_irqsave(&base->lock, flags);
1714         csr = sbus_readl(base->regs + APCCSR);
1715         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1716                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1717                  APC_XINT_PENA;
1718         if (base->dir == APC_RECORD)
1719                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1720                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1721         csr |= test;
1722         sbus_writel(csr, base->regs + APCCSR);
1723         spin_unlock_irqrestore(&base->lock, flags);
1724 }
1725
1726 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1727 {
1728         unsigned long flags;
1729         u32 csr, shift;
1730         struct sbus_dma_info *base = &dma_cont->sbus_info;
1731
1732         spin_lock_irqsave(&base->lock, flags);
1733         if (!on) {
1734                 sbus_writel(0, base->regs + base->dir + APCNC);
1735                 sbus_writel(0, base->regs + base->dir + APCNVA);
1736                 if (base->dir == APC_PLAY) {
1737                         sbus_writel(0, base->regs + base->dir + APCC);
1738                         sbus_writel(0, base->regs + base->dir + APCVA);
1739                 }
1740
1741                 udelay(1200);
1742         }
1743         csr = sbus_readl(base->regs + APCCSR);
1744         shift = 0;
1745         if (base->dir == APC_PLAY)
1746                 shift = 1;
1747         if (on)
1748                 csr &= ~(APC_CPAUSE << shift);
1749         else
1750                 csr |= (APC_CPAUSE << shift);
1751         sbus_writel(csr, base->regs + APCCSR);
1752         if (on)
1753                 csr |= (APC_CDMA_READY << shift);
1754         else
1755                 csr &= ~(APC_CDMA_READY << shift);
1756         sbus_writel(csr, base->regs + APCCSR);
1757
1758         spin_unlock_irqrestore(&base->lock, flags);
1759 }
1760
1761 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1762 {
1763         struct sbus_dma_info *base = &dma_cont->sbus_info;
1764
1765         return sbus_readl(base->regs + base->dir + APCVA);
1766 }
1767
1768 /*
1769  * Init and exit routines
1770  */
1771
1772 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1773 {
1774         struct platform_device *op = chip->op;
1775
1776         if (chip->irq[0])
1777                 free_irq(chip->irq[0], chip);
1778
1779         if (chip->port)
1780                 of_iounmap(&op->resource[0], chip->port, chip->regs_size);
1781
1782         return 0;
1783 }
1784
1785 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1786 {
1787         struct snd_cs4231 *cp = device->device_data;
1788
1789         return snd_cs4231_sbus_free(cp);
1790 }
1791
1792 static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1793         .dev_free       =       snd_cs4231_sbus_dev_free,
1794 };
1795
1796 static int snd_cs4231_sbus_create(struct snd_card *card,
1797                                   struct platform_device *op,
1798                                   int dev)
1799 {
1800         struct snd_cs4231 *chip = card->private_data;
1801         int err;
1802
1803         spin_lock_init(&chip->lock);
1804         spin_lock_init(&chip->c_dma.sbus_info.lock);
1805         spin_lock_init(&chip->p_dma.sbus_info.lock);
1806         mutex_init(&chip->mce_mutex);
1807         mutex_init(&chip->open_mutex);
1808         chip->op = op;
1809         chip->regs_size = resource_size(&op->resource[0]);
1810         memcpy(&chip->image, &snd_cs4231_original_image,
1811                sizeof(snd_cs4231_original_image));
1812
1813         chip->port = of_ioremap(&op->resource[0], 0,
1814                                 chip->regs_size, "cs4231");
1815         if (!chip->port) {
1816                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1817                 return -EIO;
1818         }
1819
1820         chip->c_dma.sbus_info.regs = chip->port;
1821         chip->p_dma.sbus_info.regs = chip->port;
1822         chip->c_dma.sbus_info.dir = APC_RECORD;
1823         chip->p_dma.sbus_info.dir = APC_PLAY;
1824
1825         chip->p_dma.prepare = sbus_dma_prepare;
1826         chip->p_dma.enable = sbus_dma_enable;
1827         chip->p_dma.request = sbus_dma_request;
1828         chip->p_dma.address = sbus_dma_addr;
1829
1830         chip->c_dma.prepare = sbus_dma_prepare;
1831         chip->c_dma.enable = sbus_dma_enable;
1832         chip->c_dma.request = sbus_dma_request;
1833         chip->c_dma.address = sbus_dma_addr;
1834
1835         if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
1836                         IRQF_SHARED, "cs4231", chip)) {
1837                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1838                             dev, op->archdata.irqs[0]);
1839                 snd_cs4231_sbus_free(chip);
1840                 return -EBUSY;
1841         }
1842         chip->irq[0] = op->archdata.irqs[0];
1843
1844         if (snd_cs4231_probe(chip) < 0) {
1845                 snd_cs4231_sbus_free(chip);
1846                 return -ENODEV;
1847         }
1848         snd_cs4231_init(chip);
1849
1850         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1851                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1852                 snd_cs4231_sbus_free(chip);
1853                 return err;
1854         }
1855
1856         return 0;
1857 }
1858
1859 static int cs4231_sbus_probe(struct platform_device *op)
1860 {
1861         struct resource *rp = &op->resource[0];
1862         struct snd_card *card;
1863         int err;
1864
1865         err = cs4231_attach_begin(op, &card);
1866         if (err)
1867                 return err;
1868
1869         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1870                 card->shortname,
1871                 rp->flags & 0xffL,
1872                 (unsigned long long)rp->start,
1873                 op->archdata.irqs[0]);
1874
1875         err = snd_cs4231_sbus_create(card, op, dev);
1876         if (err < 0) {
1877                 snd_card_free(card);
1878                 return err;
1879         }
1880
1881         return cs4231_attach_finish(card);
1882 }
1883 #endif
1884
1885 #ifdef EBUS_SUPPORT
1886
1887 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1888                                           void *cookie)
1889 {
1890         struct snd_cs4231 *chip = cookie;
1891
1892         snd_cs4231_play_callback(chip);
1893 }
1894
1895 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1896                                              int event, void *cookie)
1897 {
1898         struct snd_cs4231 *chip = cookie;
1899
1900         snd_cs4231_capture_callback(chip);
1901 }
1902
1903 /*
1904  * EBUS DMA wrappers
1905  */
1906
1907 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1908                              dma_addr_t bus_addr, size_t len)
1909 {
1910         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1911 }
1912
1913 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1914 {
1915         ebus_dma_enable(&dma_cont->ebus_info, on);
1916 }
1917
1918 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1919 {
1920         ebus_dma_prepare(&dma_cont->ebus_info, dir);
1921 }
1922
1923 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1924 {
1925         return ebus_dma_addr(&dma_cont->ebus_info);
1926 }
1927
1928 /*
1929  * Init and exit routines
1930  */
1931
1932 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1933 {
1934         struct platform_device *op = chip->op;
1935
1936         if (chip->c_dma.ebus_info.regs) {
1937                 ebus_dma_unregister(&chip->c_dma.ebus_info);
1938                 of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
1939         }
1940         if (chip->p_dma.ebus_info.regs) {
1941                 ebus_dma_unregister(&chip->p_dma.ebus_info);
1942                 of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
1943         }
1944
1945         if (chip->port)
1946                 of_iounmap(&op->resource[0], chip->port, 0x10);
1947
1948         return 0;
1949 }
1950
1951 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1952 {
1953         struct snd_cs4231 *cp = device->device_data;
1954
1955         return snd_cs4231_ebus_free(cp);
1956 }
1957
1958 static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1959         .dev_free       =       snd_cs4231_ebus_dev_free,
1960 };
1961
1962 static int snd_cs4231_ebus_create(struct snd_card *card,
1963                                   struct platform_device *op,
1964                                   int dev)
1965 {
1966         struct snd_cs4231 *chip = card->private_data;
1967         int err;
1968
1969         spin_lock_init(&chip->lock);
1970         spin_lock_init(&chip->c_dma.ebus_info.lock);
1971         spin_lock_init(&chip->p_dma.ebus_info.lock);
1972         mutex_init(&chip->mce_mutex);
1973         mutex_init(&chip->open_mutex);
1974         chip->flags |= CS4231_FLAG_EBUS;
1975         chip->op = op;
1976         memcpy(&chip->image, &snd_cs4231_original_image,
1977                sizeof(snd_cs4231_original_image));
1978         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
1979         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1980         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
1981         chip->c_dma.ebus_info.client_cookie = chip;
1982         chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
1983         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
1984         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1985         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
1986         chip->p_dma.ebus_info.client_cookie = chip;
1987         chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
1988
1989         chip->p_dma.prepare = _ebus_dma_prepare;
1990         chip->p_dma.enable = _ebus_dma_enable;
1991         chip->p_dma.request = _ebus_dma_request;
1992         chip->p_dma.address = _ebus_dma_addr;
1993
1994         chip->c_dma.prepare = _ebus_dma_prepare;
1995         chip->c_dma.enable = _ebus_dma_enable;
1996         chip->c_dma.request = _ebus_dma_request;
1997         chip->c_dma.address = _ebus_dma_addr;
1998
1999         chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
2000         chip->p_dma.ebus_info.regs =
2001                 of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
2002         chip->c_dma.ebus_info.regs =
2003                 of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
2004         if (!chip->port || !chip->p_dma.ebus_info.regs ||
2005             !chip->c_dma.ebus_info.regs) {
2006                 snd_cs4231_ebus_free(chip);
2007                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2008                 return -EIO;
2009         }
2010
2011         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2012                 snd_cs4231_ebus_free(chip);
2013                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
2014                             dev);
2015                 return -EBUSY;
2016         }
2017         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2018                 snd_cs4231_ebus_free(chip);
2019                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2020                             dev);
2021                 return -EBUSY;
2022         }
2023
2024         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2025                 snd_cs4231_ebus_free(chip);
2026                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2027                             dev);
2028                 return -EBUSY;
2029         }
2030         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2031                 snd_cs4231_ebus_free(chip);
2032                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2033                 return -EBUSY;
2034         }
2035
2036         if (snd_cs4231_probe(chip) < 0) {
2037                 snd_cs4231_ebus_free(chip);
2038                 return -ENODEV;
2039         }
2040         snd_cs4231_init(chip);
2041
2042         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2043                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2044                 snd_cs4231_ebus_free(chip);
2045                 return err;
2046         }
2047
2048         return 0;
2049 }
2050
2051 static int cs4231_ebus_probe(struct platform_device *op)
2052 {
2053         struct snd_card *card;
2054         int err;
2055
2056         err = cs4231_attach_begin(op, &card);
2057         if (err)
2058                 return err;
2059
2060         sprintf(card->longname, "%s at 0x%llx, irq %d",
2061                 card->shortname,
2062                 op->resource[0].start,
2063                 op->archdata.irqs[0]);
2064
2065         err = snd_cs4231_ebus_create(card, op, dev);
2066         if (err < 0) {
2067                 snd_card_free(card);
2068                 return err;
2069         }
2070
2071         return cs4231_attach_finish(card);
2072 }
2073 #endif
2074
2075 static int cs4231_probe(struct platform_device *op)
2076 {
2077 #ifdef EBUS_SUPPORT
2078         if (!strcmp(op->dev.of_node->parent->name, "ebus"))
2079                 return cs4231_ebus_probe(op);
2080 #endif
2081 #ifdef SBUS_SUPPORT
2082         if (!strcmp(op->dev.of_node->parent->name, "sbus") ||
2083             !strcmp(op->dev.of_node->parent->name, "sbi"))
2084                 return cs4231_sbus_probe(op);
2085 #endif
2086         return -ENODEV;
2087 }
2088
2089 static int cs4231_remove(struct platform_device *op)
2090 {
2091         struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
2092
2093         snd_card_free(chip->card);
2094
2095         return 0;
2096 }
2097
2098 static const struct of_device_id cs4231_match[] = {
2099         {
2100                 .name = "SUNW,CS4231",
2101         },
2102         {
2103                 .name = "audio",
2104                 .compatible = "SUNW,CS4231",
2105         },
2106         {},
2107 };
2108
2109 MODULE_DEVICE_TABLE(of, cs4231_match);
2110
2111 static struct platform_driver cs4231_driver = {
2112         .driver = {
2113                 .name = "audio",
2114                 .of_match_table = cs4231_match,
2115         },
2116         .probe          = cs4231_probe,
2117         .remove         = cs4231_remove,
2118 };
2119
2120 module_platform_driver(cs4231_driver);