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 const unsigned int rates[14] = {
 204         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
 205         27042, 32000, 33075, 37800, 44100, 48000
 206 };
 207
 208 static const 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 const 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 const 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                 return err;
1151         chip->playback_substream = substream;
1152         chip->p_periods_sent = 0;
1153         snd_pcm_set_sync(substream);
1154         snd_cs4231_xrate(runtime);
1155
1156         return 0;
1157 }
1158
1159 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1160 {
1161         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1162         struct snd_pcm_runtime *runtime = substream->runtime;
1163         int err;
1164
1165         runtime->hw = snd_cs4231_capture;
1166
1167         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1168         if (err < 0)
1169                 return err;
1170         chip->capture_substream = substream;
1171         chip->c_periods_sent = 0;
1172         snd_pcm_set_sync(substream);
1173         snd_cs4231_xrate(runtime);
1174
1175         return 0;
1176 }
1177
1178 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1179 {
1180         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1181
1182         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1183         chip->playback_substream = NULL;
1184
1185         return 0;
1186 }
1187
1188 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1189 {
1190         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1191
1192         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1193         chip->capture_substream = NULL;
1194
1195         return 0;
1196 }
1197
1198 /* XXX We can do some power-management, in particular on EBUS using
1199  * XXX the audio AUXIO register...
1200  */
1201
1202 static const struct snd_pcm_ops snd_cs4231_playback_ops = {
1203         .open           =       snd_cs4231_playback_open,
1204         .close          =       snd_cs4231_playback_close,
1205         .ioctl          =       snd_pcm_lib_ioctl,
1206         .hw_params      =       snd_cs4231_playback_hw_params,
1207         .hw_free        =       snd_pcm_lib_free_pages,
1208         .prepare        =       snd_cs4231_playback_prepare,
1209         .trigger        =       snd_cs4231_trigger,
1210         .pointer        =       snd_cs4231_playback_pointer,
1211 };
1212
1213 static const struct snd_pcm_ops snd_cs4231_capture_ops = {
1214         .open           =       snd_cs4231_capture_open,
1215         .close          =       snd_cs4231_capture_close,
1216         .ioctl          =       snd_pcm_lib_ioctl,
1217         .hw_params      =       snd_cs4231_capture_hw_params,
1218         .hw_free        =       snd_pcm_lib_free_pages,
1219         .prepare        =       snd_cs4231_capture_prepare,
1220         .trigger        =       snd_cs4231_trigger,
1221         .pointer        =       snd_cs4231_capture_pointer,
1222 };
1223
1224 static int snd_cs4231_pcm(struct snd_card *card)
1225 {
1226         struct snd_cs4231 *chip = card->private_data;
1227         struct snd_pcm *pcm;
1228         int err;
1229
1230         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1231         if (err < 0)
1232                 return err;
1233
1234         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1235                         &snd_cs4231_playback_ops);
1236         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1237                         &snd_cs4231_capture_ops);
1238
1239         /* global setup */
1240         pcm->private_data = chip;
1241         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1242         strcpy(pcm->name, "CS4231");
1243
1244         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1245                                               &chip->op->dev,
1246                                               64 * 1024, 128 * 1024);
1247
1248         chip->pcm = pcm;
1249
1250         return 0;
1251 }
1252
1253 static int snd_cs4231_timer(struct snd_card *card)
1254 {
1255         struct snd_cs4231 *chip = card->private_data;
1256         struct snd_timer *timer;
1257         struct snd_timer_id tid;
1258         int err;
1259
1260         /* Timer initialization */
1261         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1262         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1263         tid.card = card->number;
1264         tid.device = 0;
1265         tid.subdevice = 0;
1266         err = snd_timer_new(card, "CS4231", &tid, &timer);
1267         if (err < 0)
1268                 return err;
1269         strcpy(timer->name, "CS4231");
1270         timer->private_data = chip;
1271         timer->hw = snd_cs4231_timer_table;
1272         chip->timer = timer;
1273
1274         return 0;
1275 }
1276
1277 /*
1278  *  MIXER part
1279  */
1280
1281 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1282                                struct snd_ctl_elem_info *uinfo)
1283 {
1284         static const char * const texts[4] = {
1285                 "Line", "CD", "Mic", "Mix"
1286         };
1287
1288         return snd_ctl_enum_info(uinfo, 2, 4, texts);
1289 }
1290
1291 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1292                               struct snd_ctl_elem_value *ucontrol)
1293 {
1294         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1295         unsigned long flags;
1296
1297         spin_lock_irqsave(&chip->lock, flags);
1298         ucontrol->value.enumerated.item[0] =
1299                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1300         ucontrol->value.enumerated.item[1] =
1301                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1302         spin_unlock_irqrestore(&chip->lock, flags);
1303
1304         return 0;
1305 }
1306
1307 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1308                               struct snd_ctl_elem_value *ucontrol)
1309 {
1310         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1311         unsigned long flags;
1312         unsigned short left, right;
1313         int change;
1314
1315         if (ucontrol->value.enumerated.item[0] > 3 ||
1316             ucontrol->value.enumerated.item[1] > 3)
1317                 return -EINVAL;
1318         left = ucontrol->value.enumerated.item[0] << 6;
1319         right = ucontrol->value.enumerated.item[1] << 6;
1320
1321         spin_lock_irqsave(&chip->lock, flags);
1322
1323         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1324         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1325         change = left != chip->image[CS4231_LEFT_INPUT] ||
1326                  right != chip->image[CS4231_RIGHT_INPUT];
1327         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1328         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1329
1330         spin_unlock_irqrestore(&chip->lock, flags);
1331
1332         return change;
1333 }
1334
1335 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1336                                   struct snd_ctl_elem_info *uinfo)
1337 {
1338         int mask = (kcontrol->private_value >> 16) & 0xff;
1339
1340         uinfo->type = (mask == 1) ?
1341                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1342         uinfo->count = 1;
1343         uinfo->value.integer.min = 0;
1344         uinfo->value.integer.max = mask;
1345
1346         return 0;
1347 }
1348
1349 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1350                                  struct snd_ctl_elem_value *ucontrol)
1351 {
1352         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1353         unsigned long flags;
1354         int reg = kcontrol->private_value & 0xff;
1355         int shift = (kcontrol->private_value >> 8) & 0xff;
1356         int mask = (kcontrol->private_value >> 16) & 0xff;
1357         int invert = (kcontrol->private_value >> 24) & 0xff;
1358
1359         spin_lock_irqsave(&chip->lock, flags);
1360
1361         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1362
1363         spin_unlock_irqrestore(&chip->lock, flags);
1364
1365         if (invert)
1366                 ucontrol->value.integer.value[0] =
1367                         (mask - ucontrol->value.integer.value[0]);
1368
1369         return 0;
1370 }
1371
1372 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1373                                  struct snd_ctl_elem_value *ucontrol)
1374 {
1375         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1376         unsigned long flags;
1377         int reg = kcontrol->private_value & 0xff;
1378         int shift = (kcontrol->private_value >> 8) & 0xff;
1379         int mask = (kcontrol->private_value >> 16) & 0xff;
1380         int invert = (kcontrol->private_value >> 24) & 0xff;
1381         int change;
1382         unsigned short val;
1383
1384         val = (ucontrol->value.integer.value[0] & mask);
1385         if (invert)
1386                 val = mask - val;
1387         val <<= shift;
1388
1389         spin_lock_irqsave(&chip->lock, flags);
1390
1391         val = (chip->image[reg] & ~(mask << shift)) | val;
1392         change = val != chip->image[reg];
1393         snd_cs4231_out(chip, reg, val);
1394
1395         spin_unlock_irqrestore(&chip->lock, flags);
1396
1397         return change;
1398 }
1399
1400 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1401                                   struct snd_ctl_elem_info *uinfo)
1402 {
1403         int mask = (kcontrol->private_value >> 24) & 0xff;
1404
1405         uinfo->type = mask == 1 ?
1406                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1407         uinfo->count = 2;
1408         uinfo->value.integer.min = 0;
1409         uinfo->value.integer.max = mask;
1410
1411         return 0;
1412 }
1413
1414 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1415                                  struct snd_ctl_elem_value *ucontrol)
1416 {
1417         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1418         unsigned long flags;
1419         int left_reg = kcontrol->private_value & 0xff;
1420         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1421         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1422         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1423         int mask = (kcontrol->private_value >> 24) & 0xff;
1424         int invert = (kcontrol->private_value >> 22) & 1;
1425
1426         spin_lock_irqsave(&chip->lock, flags);
1427
1428         ucontrol->value.integer.value[0] =
1429                 (chip->image[left_reg] >> shift_left) & mask;
1430         ucontrol->value.integer.value[1] =
1431                 (chip->image[right_reg] >> shift_right) & mask;
1432
1433         spin_unlock_irqrestore(&chip->lock, flags);
1434
1435         if (invert) {
1436                 ucontrol->value.integer.value[0] =
1437                         (mask - ucontrol->value.integer.value[0]);
1438                 ucontrol->value.integer.value[1] =
1439                         (mask - ucontrol->value.integer.value[1]);
1440         }
1441
1442         return 0;
1443 }
1444
1445 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1446                                  struct snd_ctl_elem_value *ucontrol)
1447 {
1448         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1449         unsigned long flags;
1450         int left_reg = kcontrol->private_value & 0xff;
1451         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1452         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1453         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1454         int mask = (kcontrol->private_value >> 24) & 0xff;
1455         int invert = (kcontrol->private_value >> 22) & 1;
1456         int change;
1457         unsigned short val1, val2;
1458
1459         val1 = ucontrol->value.integer.value[0] & mask;
1460         val2 = ucontrol->value.integer.value[1] & mask;
1461         if (invert) {
1462                 val1 = mask - val1;
1463                 val2 = mask - val2;
1464         }
1465         val1 <<= shift_left;
1466         val2 <<= shift_right;
1467
1468         spin_lock_irqsave(&chip->lock, flags);
1469
1470         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1471         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1472         change = val1 != chip->image[left_reg];
1473         change |= val2 != chip->image[right_reg];
1474         snd_cs4231_out(chip, left_reg, val1);
1475         snd_cs4231_out(chip, right_reg, val2);
1476
1477         spin_unlock_irqrestore(&chip->lock, flags);
1478
1479         return change;
1480 }
1481
1482 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1483 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1484   .info = snd_cs4231_info_single,       \
1485   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1486   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1487
1488 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1489                         shift_right, mask, invert) \
1490 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1491   .info = snd_cs4231_info_double,       \
1492   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1493   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1494                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1495
1496 static struct snd_kcontrol_new snd_cs4231_controls[] = {
1497 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1498                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1499 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1500                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1501 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1502                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1503 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1504                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1505 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1506                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1507 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1508                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1509 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1510                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1511 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1512                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1513 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1514 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1515 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1516 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1517 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1518                 15, 0),
1519 {
1520         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1521         .name   = "Capture Source",
1522         .info   = snd_cs4231_info_mux,
1523         .get    = snd_cs4231_get_mux,
1524         .put    = snd_cs4231_put_mux,
1525 },
1526 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1527                 1, 0),
1528 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1529 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1530 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1531 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1532 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1533 };
1534
1535 static int snd_cs4231_mixer(struct snd_card *card)
1536 {
1537         struct snd_cs4231 *chip = card->private_data;
1538         int err, idx;
1539
1540         if (snd_BUG_ON(!chip || !chip->pcm))
1541                 return -EINVAL;
1542
1543         strcpy(card->mixername, chip->pcm->name);
1544
1545         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1546                 err = snd_ctl_add(card,
1547                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1548                 if (err < 0)
1549                         return err;
1550         }
1551         return 0;
1552 }
1553
1554 static int dev;
1555
1556 static int cs4231_attach_begin(struct platform_device *op,
1557                                struct snd_card **rcard)
1558 {
1559         struct snd_card *card;
1560         struct snd_cs4231 *chip;
1561         int err;
1562
1563         *rcard = NULL;
1564
1565         if (dev >= SNDRV_CARDS)
1566                 return -ENODEV;
1567
1568         if (!enable[dev]) {
1569                 dev++;
1570                 return -ENOENT;
1571         }
1572
1573         err = snd_card_new(&op->dev, index[dev], id[dev], THIS_MODULE,
1574                            sizeof(struct snd_cs4231), &card);
1575         if (err < 0)
1576                 return err;
1577
1578         strcpy(card->driver, "CS4231");
1579         strcpy(card->shortname, "Sun CS4231");
1580
1581         chip = card->private_data;
1582         chip->card = card;
1583
1584         *rcard = card;
1585         return 0;
1586 }
1587
1588 static int cs4231_attach_finish(struct snd_card *card)
1589 {
1590         struct snd_cs4231 *chip = card->private_data;
1591         int err;
1592
1593         err = snd_cs4231_pcm(card);
1594         if (err < 0)
1595                 goto out_err;
1596
1597         err = snd_cs4231_mixer(card);
1598         if (err < 0)
1599                 goto out_err;
1600
1601         err = snd_cs4231_timer(card);
1602         if (err < 0)
1603                 goto out_err;
1604
1605         err = snd_card_register(card);
1606         if (err < 0)
1607                 goto out_err;
1608
1609         dev_set_drvdata(&chip->op->dev, chip);
1610
1611         dev++;
1612         return 0;
1613
1614 out_err:
1615         snd_card_free(card);
1616         return err;
1617 }
1618
1619 #ifdef SBUS_SUPPORT
1620
1621 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1622 {
1623         unsigned long flags;
1624         unsigned char status;
1625         u32 csr;
1626         struct snd_cs4231 *chip = dev_id;
1627
1628         /*This is IRQ is not raised by the cs4231*/
1629         if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1630                 return IRQ_NONE;
1631
1632         /* ACK the APC interrupt. */
1633         csr = sbus_readl(chip->port + APCCSR);
1634
1635         sbus_writel(csr, chip->port + APCCSR);
1636
1637         if ((csr & APC_PDMA_READY) &&
1638             (csr & APC_PLAY_INT) &&
1639             (csr & APC_XINT_PNVA) &&
1640             !(csr & APC_XINT_EMPT))
1641                         snd_cs4231_play_callback(chip);
1642
1643         if ((csr & APC_CDMA_READY) &&
1644             (csr & APC_CAPT_INT) &&
1645             (csr & APC_XINT_CNVA) &&
1646             !(csr & APC_XINT_EMPT))
1647                         snd_cs4231_capture_callback(chip);
1648
1649         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1650
1651         if (status & CS4231_TIMER_IRQ) {
1652                 if (chip->timer)
1653                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1654         }
1655
1656         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1657                 snd_cs4231_overrange(chip);
1658
1659         /* ACK the CS4231 interrupt. */
1660         spin_lock_irqsave(&chip->lock, flags);
1661         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1662         spin_unlock_irqrestore(&chip->lock, flags);
1663
1664         return IRQ_HANDLED;
1665 }
1666
1667 /*
1668  * SBUS DMA routines
1669  */
1670
1671 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1672                             dma_addr_t bus_addr, size_t len)
1673 {
1674         unsigned long flags;
1675         u32 test, csr;
1676         int err;
1677         struct sbus_dma_info *base = &dma_cont->sbus_info;
1678
1679         if (len >= (1 << 24))
1680                 return -EINVAL;
1681         spin_lock_irqsave(&base->lock, flags);
1682         csr = sbus_readl(base->regs + APCCSR);
1683         err = -EINVAL;
1684         test = APC_CDMA_READY;
1685         if (base->dir == APC_PLAY)
1686                 test = APC_PDMA_READY;
1687         if (!(csr & test))
1688                 goto out;
1689         err = -EBUSY;
1690         test = APC_XINT_CNVA;
1691         if (base->dir == APC_PLAY)
1692                 test = APC_XINT_PNVA;
1693         if (!(csr & test))
1694                 goto out;
1695         err = 0;
1696         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1697         sbus_writel(len, base->regs + base->dir + APCNC);
1698 out:
1699         spin_unlock_irqrestore(&base->lock, flags);
1700         return err;
1701 }
1702
1703 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1704 {
1705         unsigned long flags;
1706         u32 csr, test;
1707         struct sbus_dma_info *base = &dma_cont->sbus_info;
1708
1709         spin_lock_irqsave(&base->lock, flags);
1710         csr = sbus_readl(base->regs + APCCSR);
1711         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1712                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1713                  APC_XINT_PENA;
1714         if (base->dir == APC_RECORD)
1715                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1716                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1717         csr |= test;
1718         sbus_writel(csr, base->regs + APCCSR);
1719         spin_unlock_irqrestore(&base->lock, flags);
1720 }
1721
1722 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1723 {
1724         unsigned long flags;
1725         u32 csr, shift;
1726         struct sbus_dma_info *base = &dma_cont->sbus_info;
1727
1728         spin_lock_irqsave(&base->lock, flags);
1729         if (!on) {
1730                 sbus_writel(0, base->regs + base->dir + APCNC);
1731                 sbus_writel(0, base->regs + base->dir + APCNVA);
1732                 if (base->dir == APC_PLAY) {
1733                         sbus_writel(0, base->regs + base->dir + APCC);
1734                         sbus_writel(0, base->regs + base->dir + APCVA);
1735                 }
1736
1737                 udelay(1200);
1738         }
1739         csr = sbus_readl(base->regs + APCCSR);
1740         shift = 0;
1741         if (base->dir == APC_PLAY)
1742                 shift = 1;
1743         if (on)
1744                 csr &= ~(APC_CPAUSE << shift);
1745         else
1746                 csr |= (APC_CPAUSE << shift);
1747         sbus_writel(csr, base->regs + APCCSR);
1748         if (on)
1749                 csr |= (APC_CDMA_READY << shift);
1750         else
1751                 csr &= ~(APC_CDMA_READY << shift);
1752         sbus_writel(csr, base->regs + APCCSR);
1753
1754         spin_unlock_irqrestore(&base->lock, flags);
1755 }
1756
1757 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1758 {
1759         struct sbus_dma_info *base = &dma_cont->sbus_info;
1760
1761         return sbus_readl(base->regs + base->dir + APCVA);
1762 }
1763
1764 /*
1765  * Init and exit routines
1766  */
1767
1768 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1769 {
1770         struct platform_device *op = chip->op;
1771
1772         if (chip->irq[0])
1773                 free_irq(chip->irq[0], chip);
1774
1775         if (chip->port)
1776                 of_iounmap(&op->resource[0], chip->port, chip->regs_size);
1777
1778         return 0;
1779 }
1780
1781 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1782 {
1783         struct snd_cs4231 *cp = device->device_data;
1784
1785         return snd_cs4231_sbus_free(cp);
1786 }
1787
1788 static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1789         .dev_free       =       snd_cs4231_sbus_dev_free,
1790 };
1791
1792 static int snd_cs4231_sbus_create(struct snd_card *card,
1793                                   struct platform_device *op,
1794                                   int dev)
1795 {
1796         struct snd_cs4231 *chip = card->private_data;
1797         int err;
1798
1799         spin_lock_init(&chip->lock);
1800         spin_lock_init(&chip->c_dma.sbus_info.lock);
1801         spin_lock_init(&chip->p_dma.sbus_info.lock);
1802         mutex_init(&chip->mce_mutex);
1803         mutex_init(&chip->open_mutex);
1804         chip->op = op;
1805         chip->regs_size = resource_size(&op->resource[0]);
1806         memcpy(&chip->image, &snd_cs4231_original_image,
1807                sizeof(snd_cs4231_original_image));
1808
1809         chip->port = of_ioremap(&op->resource[0], 0,
1810                                 chip->regs_size, "cs4231");
1811         if (!chip->port) {
1812                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1813                 return -EIO;
1814         }
1815
1816         chip->c_dma.sbus_info.regs = chip->port;
1817         chip->p_dma.sbus_info.regs = chip->port;
1818         chip->c_dma.sbus_info.dir = APC_RECORD;
1819         chip->p_dma.sbus_info.dir = APC_PLAY;
1820
1821         chip->p_dma.prepare = sbus_dma_prepare;
1822         chip->p_dma.enable = sbus_dma_enable;
1823         chip->p_dma.request = sbus_dma_request;
1824         chip->p_dma.address = sbus_dma_addr;
1825
1826         chip->c_dma.prepare = sbus_dma_prepare;
1827         chip->c_dma.enable = sbus_dma_enable;
1828         chip->c_dma.request = sbus_dma_request;
1829         chip->c_dma.address = sbus_dma_addr;
1830
1831         if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
1832                         IRQF_SHARED, "cs4231", chip)) {
1833                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1834                             dev, op->archdata.irqs[0]);
1835                 snd_cs4231_sbus_free(chip);
1836                 return -EBUSY;
1837         }
1838         chip->irq[0] = op->archdata.irqs[0];
1839
1840         if (snd_cs4231_probe(chip) < 0) {
1841                 snd_cs4231_sbus_free(chip);
1842                 return -ENODEV;
1843         }
1844         snd_cs4231_init(chip);
1845
1846         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1847                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1848                 snd_cs4231_sbus_free(chip);
1849                 return err;
1850         }
1851
1852         return 0;
1853 }
1854
1855 static int cs4231_sbus_probe(struct platform_device *op)
1856 {
1857         struct resource *rp = &op->resource[0];
1858         struct snd_card *card;
1859         int err;
1860
1861         err = cs4231_attach_begin(op, &card);
1862         if (err)
1863                 return err;
1864
1865         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1866                 card->shortname,
1867                 rp->flags & 0xffL,
1868                 (unsigned long long)rp->start,
1869                 op->archdata.irqs[0]);
1870
1871         err = snd_cs4231_sbus_create(card, op, dev);
1872         if (err < 0) {
1873                 snd_card_free(card);
1874                 return err;
1875         }
1876
1877         return cs4231_attach_finish(card);
1878 }
1879 #endif
1880
1881 #ifdef EBUS_SUPPORT
1882
1883 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1884                                           void *cookie)
1885 {
1886         struct snd_cs4231 *chip = cookie;
1887
1888         snd_cs4231_play_callback(chip);
1889 }
1890
1891 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1892                                              int event, void *cookie)
1893 {
1894         struct snd_cs4231 *chip = cookie;
1895
1896         snd_cs4231_capture_callback(chip);
1897 }
1898
1899 /*
1900  * EBUS DMA wrappers
1901  */
1902
1903 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1904                              dma_addr_t bus_addr, size_t len)
1905 {
1906         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1907 }
1908
1909 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1910 {
1911         ebus_dma_enable(&dma_cont->ebus_info, on);
1912 }
1913
1914 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1915 {
1916         ebus_dma_prepare(&dma_cont->ebus_info, dir);
1917 }
1918
1919 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1920 {
1921         return ebus_dma_addr(&dma_cont->ebus_info);
1922 }
1923
1924 /*
1925  * Init and exit routines
1926  */
1927
1928 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1929 {
1930         struct platform_device *op = chip->op;
1931
1932         if (chip->c_dma.ebus_info.regs) {
1933                 ebus_dma_unregister(&chip->c_dma.ebus_info);
1934                 of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
1935         }
1936         if (chip->p_dma.ebus_info.regs) {
1937                 ebus_dma_unregister(&chip->p_dma.ebus_info);
1938                 of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
1939         }
1940
1941         if (chip->port)
1942                 of_iounmap(&op->resource[0], chip->port, 0x10);
1943
1944         return 0;
1945 }
1946
1947 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1948 {
1949         struct snd_cs4231 *cp = device->device_data;
1950
1951         return snd_cs4231_ebus_free(cp);
1952 }
1953
1954 static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1955         .dev_free       =       snd_cs4231_ebus_dev_free,
1956 };
1957
1958 static int snd_cs4231_ebus_create(struct snd_card *card,
1959                                   struct platform_device *op,
1960                                   int dev)
1961 {
1962         struct snd_cs4231 *chip = card->private_data;
1963         int err;
1964
1965         spin_lock_init(&chip->lock);
1966         spin_lock_init(&chip->c_dma.ebus_info.lock);
1967         spin_lock_init(&chip->p_dma.ebus_info.lock);
1968         mutex_init(&chip->mce_mutex);
1969         mutex_init(&chip->open_mutex);
1970         chip->flags |= CS4231_FLAG_EBUS;
1971         chip->op = op;
1972         memcpy(&chip->image, &snd_cs4231_original_image,
1973                sizeof(snd_cs4231_original_image));
1974         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
1975         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1976         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
1977         chip->c_dma.ebus_info.client_cookie = chip;
1978         chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
1979         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
1980         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1981         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
1982         chip->p_dma.ebus_info.client_cookie = chip;
1983         chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
1984
1985         chip->p_dma.prepare = _ebus_dma_prepare;
1986         chip->p_dma.enable = _ebus_dma_enable;
1987         chip->p_dma.request = _ebus_dma_request;
1988         chip->p_dma.address = _ebus_dma_addr;
1989
1990         chip->c_dma.prepare = _ebus_dma_prepare;
1991         chip->c_dma.enable = _ebus_dma_enable;
1992         chip->c_dma.request = _ebus_dma_request;
1993         chip->c_dma.address = _ebus_dma_addr;
1994
1995         chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
1996         chip->p_dma.ebus_info.regs =
1997                 of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
1998         chip->c_dma.ebus_info.regs =
1999                 of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
2000         if (!chip->port || !chip->p_dma.ebus_info.regs ||
2001             !chip->c_dma.ebus_info.regs) {
2002                 snd_cs4231_ebus_free(chip);
2003                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2004                 return -EIO;
2005         }
2006
2007         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2008                 snd_cs4231_ebus_free(chip);
2009                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
2010                             dev);
2011                 return -EBUSY;
2012         }
2013         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2014                 snd_cs4231_ebus_free(chip);
2015                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2016                             dev);
2017                 return -EBUSY;
2018         }
2019
2020         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2021                 snd_cs4231_ebus_free(chip);
2022                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2023                             dev);
2024                 return -EBUSY;
2025         }
2026         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2027                 snd_cs4231_ebus_free(chip);
2028                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2029                 return -EBUSY;
2030         }
2031
2032         if (snd_cs4231_probe(chip) < 0) {
2033                 snd_cs4231_ebus_free(chip);
2034                 return -ENODEV;
2035         }
2036         snd_cs4231_init(chip);
2037
2038         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2039                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2040                 snd_cs4231_ebus_free(chip);
2041                 return err;
2042         }
2043
2044         return 0;
2045 }
2046
2047 static int cs4231_ebus_probe(struct platform_device *op)
2048 {
2049         struct snd_card *card;
2050         int err;
2051
2052         err = cs4231_attach_begin(op, &card);
2053         if (err)
2054                 return err;
2055
2056         sprintf(card->longname, "%s at 0x%llx, irq %d",
2057                 card->shortname,
2058                 op->resource[0].start,
2059                 op->archdata.irqs[0]);
2060
2061         err = snd_cs4231_ebus_create(card, op, dev);
2062         if (err < 0) {
2063                 snd_card_free(card);
2064                 return err;
2065         }
2066
2067         return cs4231_attach_finish(card);
2068 }
2069 #endif
2070
2071 static int cs4231_probe(struct platform_device *op)
2072 {
2073 #ifdef EBUS_SUPPORT
2074         if (!strcmp(op->dev.of_node->parent->name, "ebus"))
2075                 return cs4231_ebus_probe(op);
2076 #endif
2077 #ifdef SBUS_SUPPORT
2078         if (!strcmp(op->dev.of_node->parent->name, "sbus") ||
2079             !strcmp(op->dev.of_node->parent->name, "sbi"))
2080                 return cs4231_sbus_probe(op);
2081 #endif
2082         return -ENODEV;
2083 }
2084
2085 static int cs4231_remove(struct platform_device *op)
2086 {
2087         struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
2088
2089         snd_card_free(chip->card);
2090
2091         return 0;
2092 }
2093
2094 static const struct of_device_id cs4231_match[] = {
2095         {
2096                 .name = "SUNW,CS4231",
2097         },
2098         {
2099                 .name = "audio",
2100                 .compatible = "SUNW,CS4231",
2101         },
2102         {},
2103 };
2104
2105 MODULE_DEVICE_TABLE(of, cs4231_match);
2106
2107 static struct platform_driver cs4231_driver = {
2108         .driver = {
2109                 .name = "audio",
2110                 .of_match_table = cs4231_match,
2111         },
2112         .probe          = cs4231_probe,
2113         .remove         = cs4231_remove,
2114 };
2115
2116 module_platform_driver(cs4231_driver);