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                 BUG_ON(period_size >= (1 << 24));
 433
 434                 if (dma_cont->request(dma_cont,
 435                                       runtime->dma_addr + offset, period_size))
 436                         return;
 437                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 438         }
 439 }
 440
 441 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
 442                                unsigned int what, int on)
 443 {
 444         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 445         struct cs4231_dma_control *dma_cont;
 446
 447         if (what & CS4231_PLAYBACK_ENABLE) {
 448                 dma_cont = &chip->p_dma;
 449                 if (on) {
 450                         dma_cont->prepare(dma_cont, 0);
 451                         dma_cont->enable(dma_cont, 1);
 452                         snd_cs4231_advance_dma(dma_cont,
 453                                 chip->playback_substream,
 454                                 &chip->p_periods_sent);
 455                 } else {
 456                         dma_cont->enable(dma_cont, 0);
 457                 }
 458         }
 459         if (what & CS4231_RECORD_ENABLE) {
 460                 dma_cont = &chip->c_dma;
 461                 if (on) {
 462                         dma_cont->prepare(dma_cont, 1);
 463                         dma_cont->enable(dma_cont, 1);
 464                         snd_cs4231_advance_dma(dma_cont,
 465                                 chip->capture_substream,
 466                                 &chip->c_periods_sent);
 467                 } else {
 468                         dma_cont->enable(dma_cont, 0);
 469                 }
 470         }
 471 }
 472
 473 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
 474 {
 475         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 476         int result = 0;
 477
 478         switch (cmd) {
 479         case SNDRV_PCM_TRIGGER_START:
 480         case SNDRV_PCM_TRIGGER_STOP:
 481         {
 482                 unsigned int what = 0;
 483                 struct snd_pcm_substream *s;
 484                 unsigned long flags;
 485
 486                 snd_pcm_group_for_each_entry(s, substream) {
 487                         if (s == chip->playback_substream) {
 488                                 what |= CS4231_PLAYBACK_ENABLE;
 489                                 snd_pcm_trigger_done(s, substream);
 490                         } else if (s == chip->capture_substream) {
 491                                 what |= CS4231_RECORD_ENABLE;
 492                                 snd_pcm_trigger_done(s, substream);
 493                         }
 494                 }
 495
 496                 spin_lock_irqsave(&chip->lock, flags);
 497                 if (cmd == SNDRV_PCM_TRIGGER_START) {
 498                         cs4231_dma_trigger(substream, what, 1);
 499                         chip->image[CS4231_IFACE_CTRL] |= what;
 500                 } else {
 501                         cs4231_dma_trigger(substream, what, 0);
 502                         chip->image[CS4231_IFACE_CTRL] &= ~what;
 503                 }
 504                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 505                                chip->image[CS4231_IFACE_CTRL]);
 506                 spin_unlock_irqrestore(&chip->lock, flags);
 507                 break;
 508         }
 509         default:
 510                 result = -EINVAL;
 511                 break;
 512         }
 513
 514         return result;
 515 }
 516
 517 /*
 518  *  CODEC I/O
 519  */
 520
 521 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 522 {
 523         int i;
 524
 525         for (i = 0; i < 14; i++)
 526                 if (rate == rates[i])
 527                         return freq_bits[i];
 528
 529         return freq_bits[13];
 530 }
 531
 532 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
 533                                            int channels)
 534 {
 535         unsigned char rformat;
 536
 537         rformat = CS4231_LINEAR_8;
 538         switch (format) {
 539         case SNDRV_PCM_FORMAT_MU_LAW:
 540                 rformat = CS4231_ULAW_8;
 541                 break;
 542         case SNDRV_PCM_FORMAT_A_LAW:
 543                 rformat = CS4231_ALAW_8;
 544                 break;
 545         case SNDRV_PCM_FORMAT_S16_LE:
 546                 rformat = CS4231_LINEAR_16;
 547                 break;
 548         case SNDRV_PCM_FORMAT_S16_BE:
 549                 rformat = CS4231_LINEAR_16_BIG;
 550                 break;
 551         case SNDRV_PCM_FORMAT_IMA_ADPCM:
 552                 rformat = CS4231_ADPCM_16;
 553                 break;
 554         }
 555         if (channels > 1)
 556                 rformat |= CS4231_STEREO;
 557         return rformat;
 558 }
 559
 560 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 561 {
 562         unsigned long flags;
 563
 564         mute = mute ? 1 : 0;
 565         spin_lock_irqsave(&chip->lock, flags);
 566         if (chip->calibrate_mute == mute) {
 567                 spin_unlock_irqrestore(&chip->lock, flags);
 568                 return;
 569         }
 570         if (!mute) {
 571                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 572                                 chip->image[CS4231_LEFT_INPUT]);
 573                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 574                                 chip->image[CS4231_RIGHT_INPUT]);
 575                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
 576                                 chip->image[CS4231_LOOPBACK]);
 577         }
 578         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 579                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 580         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 581                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 582         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 583                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 584         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 585                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 586         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 587                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 588         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 589                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 590         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 591                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 592         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 593                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 594         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 595                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 596         chip->calibrate_mute = mute;
 597         spin_unlock_irqrestore(&chip->lock, flags);
 598 }
 599
 600 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 601                                        struct snd_pcm_hw_params *params,
 602                                        unsigned char pdfr)
 603 {
 604         unsigned long flags;
 605
 606         mutex_lock(&chip->mce_mutex);
 607         snd_cs4231_calibrate_mute(chip, 1);
 608
 609         snd_cs4231_mce_up(chip);
 610
 611         spin_lock_irqsave(&chip->lock, flags);
 612         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 613                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 614                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 615                        pdfr);
 616         spin_unlock_irqrestore(&chip->lock, flags);
 617
 618         snd_cs4231_mce_down(chip);
 619
 620         snd_cs4231_calibrate_mute(chip, 0);
 621         mutex_unlock(&chip->mce_mutex);
 622 }
 623
 624 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 625                                       struct snd_pcm_hw_params *params,
 626                                       unsigned char cdfr)
 627 {
 628         unsigned long flags;
 629
 630         mutex_lock(&chip->mce_mutex);
 631         snd_cs4231_calibrate_mute(chip, 1);
 632
 633         snd_cs4231_mce_up(chip);
 634
 635         spin_lock_irqsave(&chip->lock, flags);
 636         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 637                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 638                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 639                                (cdfr & 0x0f));
 640                 spin_unlock_irqrestore(&chip->lock, flags);
 641                 snd_cs4231_mce_down(chip);
 642                 snd_cs4231_mce_up(chip);
 643                 spin_lock_irqsave(&chip->lock, flags);
 644         }
 645         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 646         spin_unlock_irqrestore(&chip->lock, flags);
 647
 648         snd_cs4231_mce_down(chip);
 649
 650         snd_cs4231_calibrate_mute(chip, 0);
 651         mutex_unlock(&chip->mce_mutex);
 652 }
 653
 654 /*
 655  *  Timer interface
 656  */
 657
 658 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
 659 {
 660         struct snd_cs4231 *chip = snd_timer_chip(timer);
 661
 662         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 663 }
 664
 665 static int snd_cs4231_timer_start(struct snd_timer *timer)
 666 {
 667         unsigned long flags;
 668         unsigned int ticks;
 669         struct snd_cs4231 *chip = snd_timer_chip(timer);
 670
 671         spin_lock_irqsave(&chip->lock, flags);
 672         ticks = timer->sticks;
 673         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 674             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 675             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 676                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 677                                chip->image[CS4231_TIMER_HIGH] =
 678                                (unsigned char) (ticks >> 8));
 679                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
 680                                chip->image[CS4231_TIMER_LOW] =
 681                                (unsigned char) ticks);
 682                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 683                                chip->image[CS4231_ALT_FEATURE_1] |
 684                                         CS4231_TIMER_ENABLE);
 685         }
 686         spin_unlock_irqrestore(&chip->lock, flags);
 687
 688         return 0;
 689 }
 690
 691 static int snd_cs4231_timer_stop(struct snd_timer *timer)
 692 {
 693         unsigned long flags;
 694         struct snd_cs4231 *chip = snd_timer_chip(timer);
 695
 696         spin_lock_irqsave(&chip->lock, flags);
 697         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
 698         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 699                        chip->image[CS4231_ALT_FEATURE_1]);
 700         spin_unlock_irqrestore(&chip->lock, flags);
 701
 702         return 0;
 703 }
 704
 705 static void snd_cs4231_init(struct snd_cs4231 *chip)
 706 {
 707         unsigned long flags;
 708
 709         snd_cs4231_mce_down(chip);
 710
 711 #ifdef SNDRV_DEBUG_MCE
 712         snd_printdd("init: (1)\n");
 713 #endif
 714         snd_cs4231_mce_up(chip);
 715         spin_lock_irqsave(&chip->lock, flags);
 716         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 717                                             CS4231_PLAYBACK_PIO |
 718                                             CS4231_RECORD_ENABLE |
 719                                             CS4231_RECORD_PIO |
 720                                             CS4231_CALIB_MODE);
 721         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 722         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 723         spin_unlock_irqrestore(&chip->lock, flags);
 724         snd_cs4231_mce_down(chip);
 725
 726 #ifdef SNDRV_DEBUG_MCE
 727         snd_printdd("init: (2)\n");
 728 #endif
 729
 730         snd_cs4231_mce_up(chip);
 731         spin_lock_irqsave(&chip->lock, flags);
 732         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 733                         chip->image[CS4231_ALT_FEATURE_1]);
 734         spin_unlock_irqrestore(&chip->lock, flags);
 735         snd_cs4231_mce_down(chip);
 736
 737 #ifdef SNDRV_DEBUG_MCE
 738         snd_printdd("init: (3) - afei = 0x%x\n",
 739                     chip->image[CS4231_ALT_FEATURE_1]);
 740 #endif
 741
 742         spin_lock_irqsave(&chip->lock, flags);
 743         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
 744                         chip->image[CS4231_ALT_FEATURE_2]);
 745         spin_unlock_irqrestore(&chip->lock, flags);
 746
 747         snd_cs4231_mce_up(chip);
 748         spin_lock_irqsave(&chip->lock, flags);
 749         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 750                         chip->image[CS4231_PLAYBK_FORMAT]);
 751         spin_unlock_irqrestore(&chip->lock, flags);
 752         snd_cs4231_mce_down(chip);
 753
 754 #ifdef SNDRV_DEBUG_MCE
 755         snd_printdd("init: (4)\n");
 756 #endif
 757
 758         snd_cs4231_mce_up(chip);
 759         spin_lock_irqsave(&chip->lock, flags);
 760         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 761         spin_unlock_irqrestore(&chip->lock, flags);
 762         snd_cs4231_mce_down(chip);
 763
 764 #ifdef SNDRV_DEBUG_MCE
 765         snd_printdd("init: (5)\n");
 766 #endif
 767 }
 768
 769 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 770 {
 771         unsigned long flags;
 772
 773         mutex_lock(&chip->open_mutex);
 774         if ((chip->mode & mode)) {
 775                 mutex_unlock(&chip->open_mutex);
 776                 return -EAGAIN;
 777         }
 778         if (chip->mode & CS4231_MODE_OPEN) {
 779                 chip->mode |= mode;
 780                 mutex_unlock(&chip->open_mutex);
 781                 return 0;
 782         }
 783         /* ok. now enable and ack CODEC IRQ */
 784         spin_lock_irqsave(&chip->lock, flags);
 785         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 786                        CS4231_RECORD_IRQ |
 787                        CS4231_TIMER_IRQ);
 788         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 789         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 790         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 791
 792         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 793                        CS4231_RECORD_IRQ |
 794                        CS4231_TIMER_IRQ);
 795         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 796
 797         spin_unlock_irqrestore(&chip->lock, flags);
 798
 799         chip->mode = mode;
 800         mutex_unlock(&chip->open_mutex);
 801         return 0;
 802 }
 803
 804 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 805 {
 806         unsigned long flags;
 807
 808         mutex_lock(&chip->open_mutex);
 809         chip->mode &= ~mode;
 810         if (chip->mode & CS4231_MODE_OPEN) {
 811                 mutex_unlock(&chip->open_mutex);
 812                 return;
 813         }
 814         snd_cs4231_calibrate_mute(chip, 1);
 815
 816         /* disable IRQ */
 817         spin_lock_irqsave(&chip->lock, flags);
 818         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 819         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 820         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 821
 822         /* now disable record & playback */
 823
 824         if (chip->image[CS4231_IFACE_CTRL] &
 825             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 826              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 827                 spin_unlock_irqrestore(&chip->lock, flags);
 828                 snd_cs4231_mce_up(chip);
 829                 spin_lock_irqsave(&chip->lock, flags);
 830                 chip->image[CS4231_IFACE_CTRL] &=
 831                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 832                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 833                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 834                                 chip->image[CS4231_IFACE_CTRL]);
 835                 spin_unlock_irqrestore(&chip->lock, flags);
 836                 snd_cs4231_mce_down(chip);
 837                 spin_lock_irqsave(&chip->lock, flags);
 838         }
 839
 840         /* clear IRQ again */
 841         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 842         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 843         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 844         spin_unlock_irqrestore(&chip->lock, flags);
 845
 846         snd_cs4231_calibrate_mute(chip, 0);
 847
 848         chip->mode = 0;
 849         mutex_unlock(&chip->open_mutex);
 850 }
 851
 852 /*
 853  *  timer open/close
 854  */
 855
 856 static int snd_cs4231_timer_open(struct snd_timer *timer)
 857 {
 858         struct snd_cs4231 *chip = snd_timer_chip(timer);
 859         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 860         return 0;
 861 }
 862
 863 static int snd_cs4231_timer_close(struct snd_timer *timer)
 864 {
 865         struct snd_cs4231 *chip = snd_timer_chip(timer);
 866         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 867         return 0;
 868 }
 869
 870 static struct snd_timer_hardware snd_cs4231_timer_table = {
 871         .flags          =       SNDRV_TIMER_HW_AUTO,
 872         .resolution     =       9945,
 873         .ticks          =       65535,
 874         .open           =       snd_cs4231_timer_open,
 875         .close          =       snd_cs4231_timer_close,
 876         .c_resolution   =       snd_cs4231_timer_resolution,
 877         .start          =       snd_cs4231_timer_start,
 878         .stop           =       snd_cs4231_timer_stop,
 879 };
 880
 881 /*
 882  *  ok.. exported functions..
 883  */
 884
 885 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 886                                          struct snd_pcm_hw_params *hw_params)
 887 {
 888         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 889         unsigned char new_pdfr;
 890         int err;
 891
 892         err = snd_pcm_lib_malloc_pages(substream,
 893                                         params_buffer_bytes(hw_params));
 894         if (err < 0)
 895                 return err;
 896         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 897                                          params_channels(hw_params)) |
 898                 snd_cs4231_get_rate(params_rate(hw_params));
 899         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
 900
 901         return 0;
 902 }
 903
 904 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 905 {
 906         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 907         struct snd_pcm_runtime *runtime = substream->runtime;
 908         unsigned long flags;
 909
 910         spin_lock_irqsave(&chip->lock, flags);
 911
 912         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 913                                             CS4231_PLAYBACK_PIO);
 914
 915         BUG_ON(runtime->period_size > 0xffff + 1);
 916
 917         chip->p_periods_sent = 0;
 918         spin_unlock_irqrestore(&chip->lock, flags);
 919
 920         return 0;
 921 }
 922
 923 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 924                                         struct snd_pcm_hw_params *hw_params)
 925 {
 926         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 927         unsigned char new_cdfr;
 928         int err;
 929
 930         err = snd_pcm_lib_malloc_pages(substream,
 931                                         params_buffer_bytes(hw_params));
 932         if (err < 0)
 933                 return err;
 934         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 935                                          params_channels(hw_params)) |
 936                 snd_cs4231_get_rate(params_rate(hw_params));
 937         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
 938
 939         return 0;
 940 }
 941
 942 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 943 {
 944         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 945         unsigned long flags;
 946
 947         spin_lock_irqsave(&chip->lock, flags);
 948         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
 949                                             CS4231_RECORD_PIO);
 950
 951
 952         chip->c_periods_sent = 0;
 953         spin_unlock_irqrestore(&chip->lock, flags);
 954
 955         return 0;
 956 }
 957
 958 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 959 {
 960         unsigned long flags;
 961         unsigned char res;
 962
 963         spin_lock_irqsave(&chip->lock, flags);
 964         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 965         spin_unlock_irqrestore(&chip->lock, flags);
 966
 967         /* detect overrange only above 0dB; may be user selectable? */
 968         if (res & (0x08 | 0x02))
 969                 chip->capture_substream->runtime->overrange++;
 970 }
 971
 972 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
 973 {
 974         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
 975                 snd_pcm_period_elapsed(chip->playback_substream);
 976                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
 977                                             &chip->p_periods_sent);
 978         }
 979 }
 980
 981 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
 982 {
 983         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
 984                 snd_pcm_period_elapsed(chip->capture_substream);
 985                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
 986                                             &chip->c_periods_sent);
 987         }
 988 }
 989
 990 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
 991                                         struct snd_pcm_substream *substream)
 992 {
 993         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 994         struct cs4231_dma_control *dma_cont = &chip->p_dma;
 995         size_t ptr;
 996
 997         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
 998                 return 0;
 999         ptr = dma_cont->address(dma_cont);
1000         if (ptr != 0)
1001                 ptr -= substream->runtime->dma_addr;
1002
1003         return bytes_to_frames(substream->runtime, ptr);
1004 }
1005
1006 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1007                                         struct snd_pcm_substream *substream)
1008 {
1009         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1010         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1011         size_t ptr;
1012
1013         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1014                 return 0;
1015         ptr = dma_cont->address(dma_cont);
1016         if (ptr != 0)
1017                 ptr -= substream->runtime->dma_addr;
1018
1019         return bytes_to_frames(substream->runtime, ptr);
1020 }
1021
1022 static int snd_cs4231_probe(struct snd_cs4231 *chip)
1023 {
1024         unsigned long flags;
1025         int i;
1026         int id = 0;
1027         int vers = 0;
1028         unsigned char *ptr;
1029
1030         for (i = 0; i < 50; i++) {
1031                 mb();
1032                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1033                         msleep(2);
1034                 else {
1035                         spin_lock_irqsave(&chip->lock, flags);
1036                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1037                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1038                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1039                         spin_unlock_irqrestore(&chip->lock, flags);
1040                         if (id == 0x0a)
1041                                 break;  /* this is valid value */
1042                 }
1043         }
1044         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1045         if (id != 0x0a)
1046                 return -ENODEV; /* no valid device found */
1047
1048         spin_lock_irqsave(&chip->lock, flags);
1049
1050         /* clear any pendings IRQ */
1051         __cs4231_readb(chip, CS4231U(chip, STATUS));
1052         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1053         mb();
1054
1055         spin_unlock_irqrestore(&chip->lock, flags);
1056
1057         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1058         chip->image[CS4231_IFACE_CTRL] =
1059                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1060         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1061         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1062         if (vers & 0x20)
1063                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1064
1065         ptr = (unsigned char *) &chip->image;
1066
1067         snd_cs4231_mce_down(chip);
1068
1069         spin_lock_irqsave(&chip->lock, flags);
1070
1071         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1072                 snd_cs4231_out(chip, i, *ptr++);
1073
1074         spin_unlock_irqrestore(&chip->lock, flags);
1075
1076         snd_cs4231_mce_up(chip);
1077
1078         snd_cs4231_mce_down(chip);
1079
1080         mdelay(2);
1081
1082         return 0;               /* all things are ok.. */
1083 }
1084
1085 static struct snd_pcm_hardware snd_cs4231_playback = {
1086         .info                   = SNDRV_PCM_INFO_MMAP |
1087                                   SNDRV_PCM_INFO_INTERLEAVED |
1088                                   SNDRV_PCM_INFO_MMAP_VALID |
1089                                   SNDRV_PCM_INFO_SYNC_START,
1090         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1091                                   SNDRV_PCM_FMTBIT_A_LAW |
1092                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1093                                   SNDRV_PCM_FMTBIT_U8 |
1094                                   SNDRV_PCM_FMTBIT_S16_LE |
1095                                   SNDRV_PCM_FMTBIT_S16_BE,
1096         .rates                  = SNDRV_PCM_RATE_KNOT |
1097                                   SNDRV_PCM_RATE_8000_48000,
1098         .rate_min               = 5510,
1099         .rate_max               = 48000,
1100         .channels_min           = 1,
1101         .channels_max           = 2,
1102         .buffer_bytes_max       = 32 * 1024,
1103         .period_bytes_min       = 64,
1104         .period_bytes_max       = 32 * 1024,
1105         .periods_min            = 1,
1106         .periods_max            = 1024,
1107 };
1108
1109 static struct snd_pcm_hardware snd_cs4231_capture = {
1110         .info                   = SNDRV_PCM_INFO_MMAP |
1111                                   SNDRV_PCM_INFO_INTERLEAVED |
1112                                   SNDRV_PCM_INFO_MMAP_VALID |
1113                                   SNDRV_PCM_INFO_SYNC_START,
1114         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1115                                   SNDRV_PCM_FMTBIT_A_LAW |
1116                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1117                                   SNDRV_PCM_FMTBIT_U8 |
1118                                   SNDRV_PCM_FMTBIT_S16_LE |
1119                                   SNDRV_PCM_FMTBIT_S16_BE,
1120         .rates                  = SNDRV_PCM_RATE_KNOT |
1121                                   SNDRV_PCM_RATE_8000_48000,
1122         .rate_min               = 5510,
1123         .rate_max               = 48000,
1124         .channels_min           = 1,
1125         .channels_max           = 2,
1126         .buffer_bytes_max       = 32 * 1024,
1127         .period_bytes_min       = 64,
1128         .period_bytes_max       = 32 * 1024,
1129         .periods_min            = 1,
1130         .periods_max            = 1024,
1131 };
1132
1133 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1134 {
1135         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1136         struct snd_pcm_runtime *runtime = substream->runtime;
1137         int err;
1138
1139         runtime->hw = snd_cs4231_playback;
1140
1141         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1142         if (err < 0) {
1143                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1144                 return err;
1145         }
1146         chip->playback_substream = substream;
1147         chip->p_periods_sent = 0;
1148         snd_pcm_set_sync(substream);
1149         snd_cs4231_xrate(runtime);
1150
1151         return 0;
1152 }
1153
1154 static int snd_cs4231_capture_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_capture;
1161
1162         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1163         if (err < 0) {
1164                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1165                 return err;
1166         }
1167         chip->capture_substream = substream;
1168         chip->c_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_playback_close(struct snd_pcm_substream *substream)
1176 {
1177         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1178
1179         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1180         chip->playback_substream = NULL;
1181
1182         return 0;
1183 }
1184
1185 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1186 {
1187         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1188
1189         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1190         chip->capture_substream = NULL;
1191
1192         return 0;
1193 }
1194
1195 /* XXX We can do some power-management, in particular on EBUS using
1196  * XXX the audio AUXIO register...
1197  */
1198
1199 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1200         .open           =       snd_cs4231_playback_open,
1201         .close          =       snd_cs4231_playback_close,
1202         .ioctl          =       snd_pcm_lib_ioctl,
1203         .hw_params      =       snd_cs4231_playback_hw_params,
1204         .hw_free        =       snd_pcm_lib_free_pages,
1205         .prepare        =       snd_cs4231_playback_prepare,
1206         .trigger        =       snd_cs4231_trigger,
1207         .pointer        =       snd_cs4231_playback_pointer,
1208 };
1209
1210 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1211         .open           =       snd_cs4231_capture_open,
1212         .close          =       snd_cs4231_capture_close,
1213         .ioctl          =       snd_pcm_lib_ioctl,
1214         .hw_params      =       snd_cs4231_capture_hw_params,
1215         .hw_free        =       snd_pcm_lib_free_pages,
1216         .prepare        =       snd_cs4231_capture_prepare,
1217         .trigger        =       snd_cs4231_trigger,
1218         .pointer        =       snd_cs4231_capture_pointer,
1219 };
1220
1221 static int snd_cs4231_pcm(struct snd_card *card)
1222 {
1223         struct snd_cs4231 *chip = card->private_data;
1224         struct snd_pcm *pcm;
1225         int err;
1226
1227         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1228         if (err < 0)
1229                 return err;
1230
1231         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1232                         &snd_cs4231_playback_ops);
1233         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1234                         &snd_cs4231_capture_ops);
1235
1236         /* global setup */
1237         pcm->private_data = chip;
1238         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1239         strcpy(pcm->name, "CS4231");
1240
1241         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1242                                               &chip->op->dev,
1243                                               64 * 1024, 128 * 1024);
1244
1245         chip->pcm = pcm;
1246
1247         return 0;
1248 }
1249
1250 static int snd_cs4231_timer(struct snd_card *card)
1251 {
1252         struct snd_cs4231 *chip = card->private_data;
1253         struct snd_timer *timer;
1254         struct snd_timer_id tid;
1255         int err;
1256
1257         /* Timer initialization */
1258         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1259         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1260         tid.card = card->number;
1261         tid.device = 0;
1262         tid.subdevice = 0;
1263         err = snd_timer_new(card, "CS4231", &tid, &timer);
1264         if (err < 0)
1265                 return err;
1266         strcpy(timer->name, "CS4231");
1267         timer->private_data = chip;
1268         timer->hw = snd_cs4231_timer_table;
1269         chip->timer = timer;
1270
1271         return 0;
1272 }
1273
1274 /*
1275  *  MIXER part
1276  */
1277
1278 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1279                                struct snd_ctl_elem_info *uinfo)
1280 {
1281         static char *texts[4] = {
1282                 "Line", "CD", "Mic", "Mix"
1283         };
1284
1285         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1286         uinfo->count = 2;
1287         uinfo->value.enumerated.items = 4;
1288         if (uinfo->value.enumerated.item > 3)
1289                 uinfo->value.enumerated.item = 3;
1290         strcpy(uinfo->value.enumerated.name,
1291                 texts[uinfo->value.enumerated.item]);
1292
1293         return 0;
1294 }
1295
1296 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1297                               struct snd_ctl_elem_value *ucontrol)
1298 {
1299         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1300         unsigned long flags;
1301
1302         spin_lock_irqsave(&chip->lock, flags);
1303         ucontrol->value.enumerated.item[0] =
1304                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1305         ucontrol->value.enumerated.item[1] =
1306                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1307         spin_unlock_irqrestore(&chip->lock, flags);
1308
1309         return 0;
1310 }
1311
1312 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1313                               struct snd_ctl_elem_value *ucontrol)
1314 {
1315         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1316         unsigned long flags;
1317         unsigned short left, right;
1318         int change;
1319
1320         if (ucontrol->value.enumerated.item[0] > 3 ||
1321             ucontrol->value.enumerated.item[1] > 3)
1322                 return -EINVAL;
1323         left = ucontrol->value.enumerated.item[0] << 6;
1324         right = ucontrol->value.enumerated.item[1] << 6;
1325
1326         spin_lock_irqsave(&chip->lock, flags);
1327
1328         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1329         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1330         change = left != chip->image[CS4231_LEFT_INPUT] ||
1331                  right != chip->image[CS4231_RIGHT_INPUT];
1332         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1333         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1334
1335         spin_unlock_irqrestore(&chip->lock, flags);
1336
1337         return change;
1338 }
1339
1340 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1341                                   struct snd_ctl_elem_info *uinfo)
1342 {
1343         int mask = (kcontrol->private_value >> 16) & 0xff;
1344
1345         uinfo->type = (mask == 1) ?
1346                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1347         uinfo->count = 1;
1348         uinfo->value.integer.min = 0;
1349         uinfo->value.integer.max = mask;
1350
1351         return 0;
1352 }
1353
1354 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1355                                  struct snd_ctl_elem_value *ucontrol)
1356 {
1357         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1358         unsigned long flags;
1359         int reg = kcontrol->private_value & 0xff;
1360         int shift = (kcontrol->private_value >> 8) & 0xff;
1361         int mask = (kcontrol->private_value >> 16) & 0xff;
1362         int invert = (kcontrol->private_value >> 24) & 0xff;
1363
1364         spin_lock_irqsave(&chip->lock, flags);
1365
1366         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1367
1368         spin_unlock_irqrestore(&chip->lock, flags);
1369
1370         if (invert)
1371                 ucontrol->value.integer.value[0] =
1372                         (mask - ucontrol->value.integer.value[0]);
1373
1374         return 0;
1375 }
1376
1377 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1378                                  struct snd_ctl_elem_value *ucontrol)
1379 {
1380         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1381         unsigned long flags;
1382         int reg = kcontrol->private_value & 0xff;
1383         int shift = (kcontrol->private_value >> 8) & 0xff;
1384         int mask = (kcontrol->private_value >> 16) & 0xff;
1385         int invert = (kcontrol->private_value >> 24) & 0xff;
1386         int change;
1387         unsigned short val;
1388
1389         val = (ucontrol->value.integer.value[0] & mask);
1390         if (invert)
1391                 val = mask - val;
1392         val <<= shift;
1393
1394         spin_lock_irqsave(&chip->lock, flags);
1395
1396         val = (chip->image[reg] & ~(mask << shift)) | val;
1397         change = val != chip->image[reg];
1398         snd_cs4231_out(chip, reg, val);
1399
1400         spin_unlock_irqrestore(&chip->lock, flags);
1401
1402         return change;
1403 }
1404
1405 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1406                                   struct snd_ctl_elem_info *uinfo)
1407 {
1408         int mask = (kcontrol->private_value >> 24) & 0xff;
1409
1410         uinfo->type = mask == 1 ?
1411                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1412         uinfo->count = 2;
1413         uinfo->value.integer.min = 0;
1414         uinfo->value.integer.max = mask;
1415
1416         return 0;
1417 }
1418
1419 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1420                                  struct snd_ctl_elem_value *ucontrol)
1421 {
1422         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1423         unsigned long flags;
1424         int left_reg = kcontrol->private_value & 0xff;
1425         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1426         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1427         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1428         int mask = (kcontrol->private_value >> 24) & 0xff;
1429         int invert = (kcontrol->private_value >> 22) & 1;
1430
1431         spin_lock_irqsave(&chip->lock, flags);
1432
1433         ucontrol->value.integer.value[0] =
1434                 (chip->image[left_reg] >> shift_left) & mask;
1435         ucontrol->value.integer.value[1] =
1436                 (chip->image[right_reg] >> shift_right) & mask;
1437
1438         spin_unlock_irqrestore(&chip->lock, flags);
1439
1440         if (invert) {
1441                 ucontrol->value.integer.value[0] =
1442                         (mask - ucontrol->value.integer.value[0]);
1443                 ucontrol->value.integer.value[1] =
1444                         (mask - ucontrol->value.integer.value[1]);
1445         }
1446
1447         return 0;
1448 }
1449
1450 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1451                                  struct snd_ctl_elem_value *ucontrol)
1452 {
1453         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1454         unsigned long flags;
1455         int left_reg = kcontrol->private_value & 0xff;
1456         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1457         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1458         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1459         int mask = (kcontrol->private_value >> 24) & 0xff;
1460         int invert = (kcontrol->private_value >> 22) & 1;
1461         int change;
1462         unsigned short val1, val2;
1463
1464         val1 = ucontrol->value.integer.value[0] & mask;
1465         val2 = ucontrol->value.integer.value[1] & mask;
1466         if (invert) {
1467                 val1 = mask - val1;
1468                 val2 = mask - val2;
1469         }
1470         val1 <<= shift_left;
1471         val2 <<= shift_right;
1472
1473         spin_lock_irqsave(&chip->lock, flags);
1474
1475         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1476         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1477         change = val1 != chip->image[left_reg];
1478         change |= val2 != chip->image[right_reg];
1479         snd_cs4231_out(chip, left_reg, val1);
1480         snd_cs4231_out(chip, right_reg, val2);
1481
1482         spin_unlock_irqrestore(&chip->lock, flags);
1483
1484         return change;
1485 }
1486
1487 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1488 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1489   .info = snd_cs4231_info_single,       \
1490   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1491   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1492
1493 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1494                         shift_right, mask, invert) \
1495 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1496   .info = snd_cs4231_info_double,       \
1497   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1498   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1499                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1500
1501 static struct snd_kcontrol_new snd_cs4231_controls[] = {
1502 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1503                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1504 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1505                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1506 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1507                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1508 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1509                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1510 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1511                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1512 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1513                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1514 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1515                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1516 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1517                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1518 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1519 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1520 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1521 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1522 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1523                 15, 0),
1524 {
1525         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1526         .name   = "Capture Source",
1527         .info   = snd_cs4231_info_mux,
1528         .get    = snd_cs4231_get_mux,
1529         .put    = snd_cs4231_put_mux,
1530 },
1531 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1532                 1, 0),
1533 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1534 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1535 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1536 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1537 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1538 };
1539
1540 static int snd_cs4231_mixer(struct snd_card *card)
1541 {
1542         struct snd_cs4231 *chip = card->private_data;
1543         int err, idx;
1544
1545         if (snd_BUG_ON(!chip || !chip->pcm))
1546                 return -EINVAL;
1547
1548         strcpy(card->mixername, chip->pcm->name);
1549
1550         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1551                 err = snd_ctl_add(card,
1552                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1553                 if (err < 0)
1554                         return err;
1555         }
1556         return 0;
1557 }
1558
1559 static int dev;
1560
1561 static int cs4231_attach_begin(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_create(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(&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(&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                 .owner = THIS_MODULE,
2115                 .of_match_table = cs4231_match,
2116         },
2117         .probe          = cs4231_probe,
2118         .remove         = cs4231_remove,
2119 };
2120
2121 module_platform_driver(cs4231_driver);