sound/sparc/cs4231.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Driver for CS4231 sound chips found on Sparcs.
   4  * Copyright (C) 2002, 2008 David S. Miller <[email protected]>
   5  *
   6  * Based entirely upon drivers/sbus/audio/cs4231.c which is:
   7  * Copyright (C) 1996, 1997, 1998 Derrick J Brashear ([email protected])
   8  * and also sound/isa/cs423x/cs4231_lib.c which is:
   9  * Copyright (c) by Jaroslav Kysela <[email protected]>
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/delay.h>
  15 #include <linux/init.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/moduleparam.h>
  18 #include <linux/irq.h>
  19 #include <linux/io.h>
  20 #include <linux/of.h>
  21 #include <linux/platform_device.h>
  22
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/info.h>
  26 #include <sound/control.h>
  27 #include <sound/timer.h>
  28 #include <sound/initval.h>
  29 #include <sound/pcm_params.h>
  30
  31 #ifdef CONFIG_SBUS
  32 #define SBUS_SUPPORT
  33 #endif
  34
  35 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
  36 #define EBUS_SUPPORT
  37 #include <linux/pci.h>
  38 #include <asm/ebus_dma.h>
  39 #endif
  40
  41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  43 /* Enable this card */
  44 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  45
  46 module_param_array(index, int, NULL, 0444);
  47 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
  48 module_param_array(id, charp, NULL, 0444);
  49 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
  50 module_param_array(enable, bool, NULL, 0444);
  51 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
  52 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
  53 MODULE_DESCRIPTION("Sun CS4231");
  54 MODULE_LICENSE("GPL");
  55
  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 const 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 const 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                 dev_dbg(chip->card->dev,
 296                         "out: auto calibration time out - reg = 0x%x, 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                 dev_dbg(chip->card->dev,
 329                         "in: auto calibration time out - reg = 0x%x\n",
 330                         reg);
 331 #endif
 332         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 333         mb();
 334         return __cs4231_readb(chip, CS4231U(chip, REG));
 335 }
 336
 337 /*
 338  *  CS4231 detection / MCE routines
 339  */
 340
 341 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 342 {
 343         int timeout;
 344
 345         /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
 346         for (timeout = 5; timeout > 0; timeout--)
 347                 __cs4231_readb(chip, CS4231U(chip, REGSEL));
 348
 349         /* end of cleanup sequence */
 350         for (timeout = 500; timeout > 0; timeout--) {
 351                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 352                 if ((val & CS4231_INIT) == 0)
 353                         break;
 354                 msleep(1);
 355         }
 356 }
 357
 358 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 359 {
 360         unsigned long flags;
 361         int timeout;
 362
 363         spin_lock_irqsave(&chip->lock, flags);
 364         snd_cs4231_ready(chip);
 365 #ifdef CONFIG_SND_DEBUG
 366         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 367                 dev_dbg(chip->card->dev,
 368                         "mce_up - auto calibration time out (0)\n");
 369 #endif
 370         chip->mce_bit |= CS4231_MCE;
 371         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 372         if (timeout == 0x80)
 373                 dev_dbg(chip->card->dev,
 374                         "mce_up [%p]: serious init problem - codec still busy\n",
 375                         chip->port);
 376         if (!(timeout & CS4231_MCE))
 377                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
 378                                 CS4231U(chip, REGSEL));
 379         spin_unlock_irqrestore(&chip->lock, flags);
 380 }
 381
 382 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 383 {
 384         unsigned long flags, timeout;
 385         int reg;
 386
 387         snd_cs4231_busy_wait(chip);
 388         spin_lock_irqsave(&chip->lock, flags);
 389 #ifdef CONFIG_SND_DEBUG
 390         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 391                 dev_dbg(chip->card->dev,
 392                         "mce_down [%p] - auto calibration time out (0)\n",
 393                         CS4231U(chip, REGSEL));
 394 #endif
 395         chip->mce_bit &= ~CS4231_MCE;
 396         reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 397         __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
 398                         CS4231U(chip, REGSEL));
 399         if (reg == 0x80)
 400                 dev_dbg(chip->card->dev,
 401                         "mce_down [%p]: serious init problem - codec still busy\n",
 402                         chip->port);
 403         if ((reg & CS4231_MCE) == 0) {
 404                 spin_unlock_irqrestore(&chip->lock, flags);
 405                 return;
 406         }
 407
 408         /*
 409          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 410          */
 411         timeout = jiffies + msecs_to_jiffies(250);
 412         do {
 413                 spin_unlock_irqrestore(&chip->lock, flags);
 414                 msleep(1);
 415                 spin_lock_irqsave(&chip->lock, flags);
 416                 reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
 417                 reg &= CS4231_CALIB_IN_PROGRESS;
 418         } while (reg && time_before(jiffies, timeout));
 419         spin_unlock_irqrestore(&chip->lock, flags);
 420
 421         if (reg)
 422                 dev_err(chip->card->dev,
 423                         "mce_down - auto calibration time out (2)\n");
 424 }
 425
 426 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
 427                                    struct snd_pcm_substream *substream,
 428                                    unsigned int *periods_sent)
 429 {
 430         struct snd_pcm_runtime *runtime = substream->runtime;
 431
 432         while (1) {
 433                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
 434                 unsigned int offset = period_size * (*periods_sent);
 435
 436                 if (WARN_ON(period_size >= (1 << 24)))
 437                         return;
 438
 439                 if (dma_cont->request(dma_cont,
 440                                       runtime->dma_addr + offset, period_size))
 441                         return;
 442                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 443         }
 444 }
 445
 446 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
 447                                unsigned int what, int on)
 448 {
 449         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 450         struct cs4231_dma_control *dma_cont;
 451
 452         if (what & CS4231_PLAYBACK_ENABLE) {
 453                 dma_cont = &chip->p_dma;
 454                 if (on) {
 455                         dma_cont->prepare(dma_cont, 0);
 456                         dma_cont->enable(dma_cont, 1);
 457                         snd_cs4231_advance_dma(dma_cont,
 458                                 chip->playback_substream,
 459                                 &chip->p_periods_sent);
 460                 } else {
 461                         dma_cont->enable(dma_cont, 0);
 462                 }
 463         }
 464         if (what & CS4231_RECORD_ENABLE) {
 465                 dma_cont = &chip->c_dma;
 466                 if (on) {
 467                         dma_cont->prepare(dma_cont, 1);
 468                         dma_cont->enable(dma_cont, 1);
 469                         snd_cs4231_advance_dma(dma_cont,
 470                                 chip->capture_substream,
 471                                 &chip->c_periods_sent);
 472                 } else {
 473                         dma_cont->enable(dma_cont, 0);
 474                 }
 475         }
 476 }
 477
 478 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
 479 {
 480         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 481         int result = 0;
 482
 483         switch (cmd) {
 484         case SNDRV_PCM_TRIGGER_START:
 485         case SNDRV_PCM_TRIGGER_STOP:
 486         {
 487                 unsigned int what = 0;
 488                 struct snd_pcm_substream *s;
 489                 unsigned long flags;
 490
 491                 snd_pcm_group_for_each_entry(s, substream) {
 492                         if (s == chip->playback_substream) {
 493                                 what |= CS4231_PLAYBACK_ENABLE;
 494                                 snd_pcm_trigger_done(s, substream);
 495                         } else if (s == chip->capture_substream) {
 496                                 what |= CS4231_RECORD_ENABLE;
 497                                 snd_pcm_trigger_done(s, substream);
 498                         }
 499                 }
 500
 501                 spin_lock_irqsave(&chip->lock, flags);
 502                 if (cmd == SNDRV_PCM_TRIGGER_START) {
 503                         cs4231_dma_trigger(substream, what, 1);
 504                         chip->image[CS4231_IFACE_CTRL] |= what;
 505                 } else {
 506                         cs4231_dma_trigger(substream, what, 0);
 507                         chip->image[CS4231_IFACE_CTRL] &= ~what;
 508                 }
 509                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 510                                chip->image[CS4231_IFACE_CTRL]);
 511                 spin_unlock_irqrestore(&chip->lock, flags);
 512                 break;
 513         }
 514         default:
 515                 result = -EINVAL;
 516                 break;
 517         }
 518
 519         return result;
 520 }
 521
 522 /*
 523  *  CODEC I/O
 524  */
 525
 526 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 527 {
 528         int i;
 529
 530         for (i = 0; i < 14; i++)
 531                 if (rate == rates[i])
 532                         return freq_bits[i];
 533
 534         return freq_bits[13];
 535 }
 536
 537 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
 538                                            int channels)
 539 {
 540         unsigned char rformat;
 541
 542         rformat = CS4231_LINEAR_8;
 543         switch (format) {
 544         case SNDRV_PCM_FORMAT_MU_LAW:
 545                 rformat = CS4231_ULAW_8;
 546                 break;
 547         case SNDRV_PCM_FORMAT_A_LAW:
 548                 rformat = CS4231_ALAW_8;
 549                 break;
 550         case SNDRV_PCM_FORMAT_S16_LE:
 551                 rformat = CS4231_LINEAR_16;
 552                 break;
 553         case SNDRV_PCM_FORMAT_S16_BE:
 554                 rformat = CS4231_LINEAR_16_BIG;
 555                 break;
 556         case SNDRV_PCM_FORMAT_IMA_ADPCM:
 557                 rformat = CS4231_ADPCM_16;
 558                 break;
 559         }
 560         if (channels > 1)
 561                 rformat |= CS4231_STEREO;
 562         return rformat;
 563 }
 564
 565 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 566 {
 567         unsigned long flags;
 568
 569         mute = mute ? 1 : 0;
 570         spin_lock_irqsave(&chip->lock, flags);
 571         if (chip->calibrate_mute == mute) {
 572                 spin_unlock_irqrestore(&chip->lock, flags);
 573                 return;
 574         }
 575         if (!mute) {
 576                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 577                                 chip->image[CS4231_LEFT_INPUT]);
 578                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 579                                 chip->image[CS4231_RIGHT_INPUT]);
 580                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
 581                                 chip->image[CS4231_LOOPBACK]);
 582         }
 583         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 584                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 585         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 586                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 587         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 588                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 589         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 590                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 591         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 592                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 593         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 594                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 595         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 596                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 597         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 598                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 599         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 600                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 601         chip->calibrate_mute = mute;
 602         spin_unlock_irqrestore(&chip->lock, flags);
 603 }
 604
 605 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 606                                        struct snd_pcm_hw_params *params,
 607                                        unsigned char pdfr)
 608 {
 609         unsigned long flags;
 610
 611         mutex_lock(&chip->mce_mutex);
 612         snd_cs4231_calibrate_mute(chip, 1);
 613
 614         snd_cs4231_mce_up(chip);
 615
 616         spin_lock_irqsave(&chip->lock, flags);
 617         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 618                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 619                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 620                        pdfr);
 621         spin_unlock_irqrestore(&chip->lock, flags);
 622
 623         snd_cs4231_mce_down(chip);
 624
 625         snd_cs4231_calibrate_mute(chip, 0);
 626         mutex_unlock(&chip->mce_mutex);
 627 }
 628
 629 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 630                                       struct snd_pcm_hw_params *params,
 631                                       unsigned char cdfr)
 632 {
 633         unsigned long flags;
 634
 635         mutex_lock(&chip->mce_mutex);
 636         snd_cs4231_calibrate_mute(chip, 1);
 637
 638         snd_cs4231_mce_up(chip);
 639
 640         spin_lock_irqsave(&chip->lock, flags);
 641         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 642                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 643                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 644                                (cdfr & 0x0f));
 645                 spin_unlock_irqrestore(&chip->lock, flags);
 646                 snd_cs4231_mce_down(chip);
 647                 snd_cs4231_mce_up(chip);
 648                 spin_lock_irqsave(&chip->lock, flags);
 649         }
 650         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 651         spin_unlock_irqrestore(&chip->lock, flags);
 652
 653         snd_cs4231_mce_down(chip);
 654
 655         snd_cs4231_calibrate_mute(chip, 0);
 656         mutex_unlock(&chip->mce_mutex);
 657 }
 658
 659 /*
 660  *  Timer interface
 661  */
 662
 663 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
 664 {
 665         struct snd_cs4231 *chip = snd_timer_chip(timer);
 666
 667         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 668 }
 669
 670 static int snd_cs4231_timer_start(struct snd_timer *timer)
 671 {
 672         unsigned long flags;
 673         unsigned int ticks;
 674         struct snd_cs4231 *chip = snd_timer_chip(timer);
 675
 676         spin_lock_irqsave(&chip->lock, flags);
 677         ticks = timer->sticks;
 678         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 679             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 680             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 681                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 682                                chip->image[CS4231_TIMER_HIGH] =
 683                                (unsigned char) (ticks >> 8));
 684                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
 685                                chip->image[CS4231_TIMER_LOW] =
 686                                (unsigned char) ticks);
 687                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 688                                chip->image[CS4231_ALT_FEATURE_1] |
 689                                         CS4231_TIMER_ENABLE);
 690         }
 691         spin_unlock_irqrestore(&chip->lock, flags);
 692
 693         return 0;
 694 }
 695
 696 static int snd_cs4231_timer_stop(struct snd_timer *timer)
 697 {
 698         unsigned long flags;
 699         struct snd_cs4231 *chip = snd_timer_chip(timer);
 700
 701         spin_lock_irqsave(&chip->lock, flags);
 702         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
 703         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 704                        chip->image[CS4231_ALT_FEATURE_1]);
 705         spin_unlock_irqrestore(&chip->lock, flags);
 706
 707         return 0;
 708 }
 709
 710 static void snd_cs4231_init(struct snd_cs4231 *chip)
 711 {
 712         unsigned long flags;
 713
 714         snd_cs4231_mce_down(chip);
 715
 716 #ifdef SNDRV_DEBUG_MCE
 717         pr_debug("init: (1)\n");
 718 #endif
 719         snd_cs4231_mce_up(chip);
 720         spin_lock_irqsave(&chip->lock, flags);
 721         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 722                                             CS4231_PLAYBACK_PIO |
 723                                             CS4231_RECORD_ENABLE |
 724                                             CS4231_RECORD_PIO |
 725                                             CS4231_CALIB_MODE);
 726         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 727         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 728         spin_unlock_irqrestore(&chip->lock, flags);
 729         snd_cs4231_mce_down(chip);
 730
 731 #ifdef SNDRV_DEBUG_MCE
 732         pr_debug("init: (2)\n");
 733 #endif
 734
 735         snd_cs4231_mce_up(chip);
 736         spin_lock_irqsave(&chip->lock, flags);
 737         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 738                         chip->image[CS4231_ALT_FEATURE_1]);
 739         spin_unlock_irqrestore(&chip->lock, flags);
 740         snd_cs4231_mce_down(chip);
 741
 742 #ifdef SNDRV_DEBUG_MCE
 743         pr_debug("init: (3) - afei = 0x%x\n",
 744                  chip->image[CS4231_ALT_FEATURE_1]);
 745 #endif
 746
 747         spin_lock_irqsave(&chip->lock, flags);
 748         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
 749                         chip->image[CS4231_ALT_FEATURE_2]);
 750         spin_unlock_irqrestore(&chip->lock, flags);
 751
 752         snd_cs4231_mce_up(chip);
 753         spin_lock_irqsave(&chip->lock, flags);
 754         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 755                         chip->image[CS4231_PLAYBK_FORMAT]);
 756         spin_unlock_irqrestore(&chip->lock, flags);
 757         snd_cs4231_mce_down(chip);
 758
 759 #ifdef SNDRV_DEBUG_MCE
 760         pr_debug("init: (4)\n");
 761 #endif
 762
 763         snd_cs4231_mce_up(chip);
 764         spin_lock_irqsave(&chip->lock, flags);
 765         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 766         spin_unlock_irqrestore(&chip->lock, flags);
 767         snd_cs4231_mce_down(chip);
 768
 769 #ifdef SNDRV_DEBUG_MCE
 770         pr_debug("init: (5)\n");
 771 #endif
 772 }
 773
 774 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 775 {
 776         unsigned long flags;
 777
 778         mutex_lock(&chip->open_mutex);
 779         if ((chip->mode & mode)) {
 780                 mutex_unlock(&chip->open_mutex);
 781                 return -EAGAIN;
 782         }
 783         if (chip->mode & CS4231_MODE_OPEN) {
 784                 chip->mode |= mode;
 785                 mutex_unlock(&chip->open_mutex);
 786                 return 0;
 787         }
 788         /* ok. now enable and ack CODEC IRQ */
 789         spin_lock_irqsave(&chip->lock, flags);
 790         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 791                        CS4231_RECORD_IRQ |
 792                        CS4231_TIMER_IRQ);
 793         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 794         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 795         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 796
 797         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 798                        CS4231_RECORD_IRQ |
 799                        CS4231_TIMER_IRQ);
 800         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 801
 802         spin_unlock_irqrestore(&chip->lock, flags);
 803
 804         chip->mode = mode;
 805         mutex_unlock(&chip->open_mutex);
 806         return 0;
 807 }
 808
 809 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 810 {
 811         unsigned long flags;
 812
 813         mutex_lock(&chip->open_mutex);
 814         chip->mode &= ~mode;
 815         if (chip->mode & CS4231_MODE_OPEN) {
 816                 mutex_unlock(&chip->open_mutex);
 817                 return;
 818         }
 819         snd_cs4231_calibrate_mute(chip, 1);
 820
 821         /* disable IRQ */
 822         spin_lock_irqsave(&chip->lock, flags);
 823         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 824         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 825         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 826
 827         /* now disable record & playback */
 828
 829         if (chip->image[CS4231_IFACE_CTRL] &
 830             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 831              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 832                 spin_unlock_irqrestore(&chip->lock, flags);
 833                 snd_cs4231_mce_up(chip);
 834                 spin_lock_irqsave(&chip->lock, flags);
 835                 chip->image[CS4231_IFACE_CTRL] &=
 836                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 837                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 838                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 839                                 chip->image[CS4231_IFACE_CTRL]);
 840                 spin_unlock_irqrestore(&chip->lock, flags);
 841                 snd_cs4231_mce_down(chip);
 842                 spin_lock_irqsave(&chip->lock, flags);
 843         }
 844
 845         /* clear IRQ again */
 846         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 847         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 848         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 849         spin_unlock_irqrestore(&chip->lock, flags);
 850
 851         snd_cs4231_calibrate_mute(chip, 0);
 852
 853         chip->mode = 0;
 854         mutex_unlock(&chip->open_mutex);
 855 }
 856
 857 /*
 858  *  timer open/close
 859  */
 860
 861 static int snd_cs4231_timer_open(struct snd_timer *timer)
 862 {
 863         struct snd_cs4231 *chip = snd_timer_chip(timer);
 864         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 865         return 0;
 866 }
 867
 868 static int snd_cs4231_timer_close(struct snd_timer *timer)
 869 {
 870         struct snd_cs4231 *chip = snd_timer_chip(timer);
 871         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 872         return 0;
 873 }
 874
 875 static const struct snd_timer_hardware snd_cs4231_timer_table = {
 876         .flags          =       SNDRV_TIMER_HW_AUTO,
 877         .resolution     =       9945,
 878         .ticks          =       65535,
 879         .open           =       snd_cs4231_timer_open,
 880         .close          =       snd_cs4231_timer_close,
 881         .c_resolution   =       snd_cs4231_timer_resolution,
 882         .start          =       snd_cs4231_timer_start,
 883         .stop           =       snd_cs4231_timer_stop,
 884 };
 885
 886 /*
 887  *  ok.. exported functions..
 888  */
 889
 890 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 891                                          struct snd_pcm_hw_params *hw_params)
 892 {
 893         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 894         unsigned char new_pdfr;
 895
 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         int ret = 0;
 910
 911         spin_lock_irqsave(&chip->lock, flags);
 912
 913         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 914                                             CS4231_PLAYBACK_PIO);
 915
 916         if (WARN_ON(runtime->period_size > 0xffff + 1)) {
 917                 ret = -EINVAL;
 918                 goto out;
 919         }
 920
 921         chip->p_periods_sent = 0;
 922
 923 out:
 924         spin_unlock_irqrestore(&chip->lock, flags);
 925
 926         return ret;
 927 }
 928
 929 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 930                                         struct snd_pcm_hw_params *hw_params)
 931 {
 932         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 933         unsigned char new_cdfr;
 934
 935         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 936                                          params_channels(hw_params)) |
 937                 snd_cs4231_get_rate(params_rate(hw_params));
 938         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
 939
 940         return 0;
 941 }
 942
 943 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 944 {
 945         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 946         unsigned long flags;
 947
 948         spin_lock_irqsave(&chip->lock, flags);
 949         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
 950                                             CS4231_RECORD_PIO);
 951
 952
 953         chip->c_periods_sent = 0;
 954         spin_unlock_irqrestore(&chip->lock, flags);
 955
 956         return 0;
 957 }
 958
 959 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 960 {
 961         unsigned long flags;
 962         unsigned char res;
 963
 964         spin_lock_irqsave(&chip->lock, flags);
 965         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 966         spin_unlock_irqrestore(&chip->lock, flags);
 967
 968         /* detect overrange only above 0dB; may be user selectable? */
 969         if (res & (0x08 | 0x02))
 970                 chip->capture_substream->runtime->overrange++;
 971 }
 972
 973 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
 974 {
 975         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
 976                 snd_pcm_period_elapsed(chip->playback_substream);
 977                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
 978                                             &chip->p_periods_sent);
 979         }
 980 }
 981
 982 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
 983 {
 984         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
 985                 snd_pcm_period_elapsed(chip->capture_substream);
 986                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
 987                                             &chip->c_periods_sent);
 988         }
 989 }
 990
 991 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
 992                                         struct snd_pcm_substream *substream)
 993 {
 994         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 995         struct cs4231_dma_control *dma_cont = &chip->p_dma;
 996         size_t ptr;
 997
 998         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
 999                 return 0;
1000         ptr = dma_cont->address(dma_cont);
1001         if (ptr != 0)
1002                 ptr -= substream->runtime->dma_addr;
1003
1004         return bytes_to_frames(substream->runtime, ptr);
1005 }
1006
1007 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1008                                         struct snd_pcm_substream *substream)
1009 {
1010         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1011         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1012         size_t ptr;
1013
1014         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1015                 return 0;
1016         ptr = dma_cont->address(dma_cont);
1017         if (ptr != 0)
1018                 ptr -= substream->runtime->dma_addr;
1019
1020         return bytes_to_frames(substream->runtime, ptr);
1021 }
1022
1023 static int snd_cs4231_probe(struct snd_cs4231 *chip)
1024 {
1025         unsigned long flags;
1026         int i;
1027         int id = 0;
1028         int vers = 0;
1029         unsigned char *ptr;
1030
1031         for (i = 0; i < 50; i++) {
1032                 mb();
1033                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1034                         msleep(2);
1035                 else {
1036                         spin_lock_irqsave(&chip->lock, flags);
1037                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1038                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1039                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1040                         spin_unlock_irqrestore(&chip->lock, flags);
1041                         if (id == 0x0a)
1042                                 break;  /* this is valid value */
1043                 }
1044         }
1045         dev_dbg(chip->card->dev,
1046                 "cs4231: port = %p, id = 0x%x\n", chip->port, id);
1047         if (id != 0x0a)
1048                 return -ENODEV; /* no valid device found */
1049
1050         spin_lock_irqsave(&chip->lock, flags);
1051
1052         /* clear any pendings IRQ */
1053         __cs4231_readb(chip, CS4231U(chip, STATUS));
1054         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1055         mb();
1056
1057         spin_unlock_irqrestore(&chip->lock, flags);
1058
1059         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1060         chip->image[CS4231_IFACE_CTRL] =
1061                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1062         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1063         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1064         if (vers & 0x20)
1065                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1066
1067         ptr = (unsigned char *) &chip->image;
1068
1069         snd_cs4231_mce_down(chip);
1070
1071         spin_lock_irqsave(&chip->lock, flags);
1072
1073         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1074                 snd_cs4231_out(chip, i, *ptr++);
1075
1076         spin_unlock_irqrestore(&chip->lock, flags);
1077
1078         snd_cs4231_mce_up(chip);
1079
1080         snd_cs4231_mce_down(chip);
1081
1082         mdelay(2);
1083
1084         return 0;               /* all things are ok.. */
1085 }
1086
1087 static const struct snd_pcm_hardware snd_cs4231_playback = {
1088         .info                   = SNDRV_PCM_INFO_MMAP |
1089                                   SNDRV_PCM_INFO_INTERLEAVED |
1090                                   SNDRV_PCM_INFO_MMAP_VALID |
1091                                   SNDRV_PCM_INFO_SYNC_START,
1092         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1093                                   SNDRV_PCM_FMTBIT_A_LAW |
1094                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1095                                   SNDRV_PCM_FMTBIT_U8 |
1096                                   SNDRV_PCM_FMTBIT_S16_LE |
1097                                   SNDRV_PCM_FMTBIT_S16_BE,
1098         .rates                  = SNDRV_PCM_RATE_KNOT |
1099                                   SNDRV_PCM_RATE_8000_48000,
1100         .rate_min               = 5510,
1101         .rate_max               = 48000,
1102         .channels_min           = 1,
1103         .channels_max           = 2,
1104         .buffer_bytes_max       = 32 * 1024,
1105         .period_bytes_min       = 64,
1106         .period_bytes_max       = 32 * 1024,
1107         .periods_min            = 1,
1108         .periods_max            = 1024,
1109 };
1110
1111 static const struct snd_pcm_hardware snd_cs4231_capture = {
1112         .info                   = SNDRV_PCM_INFO_MMAP |
1113                                   SNDRV_PCM_INFO_INTERLEAVED |
1114                                   SNDRV_PCM_INFO_MMAP_VALID |
1115                                   SNDRV_PCM_INFO_SYNC_START,
1116         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1117                                   SNDRV_PCM_FMTBIT_A_LAW |
1118                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1119                                   SNDRV_PCM_FMTBIT_U8 |
1120                                   SNDRV_PCM_FMTBIT_S16_LE |
1121                                   SNDRV_PCM_FMTBIT_S16_BE,
1122         .rates                  = SNDRV_PCM_RATE_KNOT |
1123                                   SNDRV_PCM_RATE_8000_48000,
1124         .rate_min               = 5510,
1125         .rate_max               = 48000,
1126         .channels_min           = 1,
1127         .channels_max           = 2,
1128         .buffer_bytes_max       = 32 * 1024,
1129         .period_bytes_min       = 64,
1130         .period_bytes_max       = 32 * 1024,
1131         .periods_min            = 1,
1132         .periods_max            = 1024,
1133 };
1134
1135 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1136 {
1137         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1138         struct snd_pcm_runtime *runtime = substream->runtime;
1139         int err;
1140
1141         runtime->hw = snd_cs4231_playback;
1142
1143         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1144         if (err < 0)
1145                 return err;
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                 return err;
1165         chip->capture_substream = substream;
1166         chip->c_periods_sent = 0;
1167         snd_pcm_set_sync(substream);
1168         snd_cs4231_xrate(runtime);
1169
1170         return 0;
1171 }
1172
1173 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1174 {
1175         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1176
1177         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1178         chip->playback_substream = NULL;
1179
1180         return 0;
1181 }
1182
1183 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1184 {
1185         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1186
1187         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1188         chip->capture_substream = NULL;
1189
1190         return 0;
1191 }
1192
1193 /* XXX We can do some power-management, in particular on EBUS using
1194  * XXX the audio AUXIO register...
1195  */
1196
1197 static const struct snd_pcm_ops snd_cs4231_playback_ops = {
1198         .open           =       snd_cs4231_playback_open,
1199         .close          =       snd_cs4231_playback_close,
1200         .hw_params      =       snd_cs4231_playback_hw_params,
1201         .prepare        =       snd_cs4231_playback_prepare,
1202         .trigger        =       snd_cs4231_trigger,
1203         .pointer        =       snd_cs4231_playback_pointer,
1204 };
1205
1206 static const struct snd_pcm_ops snd_cs4231_capture_ops = {
1207         .open           =       snd_cs4231_capture_open,
1208         .close          =       snd_cs4231_capture_close,
1209         .hw_params      =       snd_cs4231_capture_hw_params,
1210         .prepare        =       snd_cs4231_capture_prepare,
1211         .trigger        =       snd_cs4231_trigger,
1212         .pointer        =       snd_cs4231_capture_pointer,
1213 };
1214
1215 static int snd_cs4231_pcm(struct snd_card *card)
1216 {
1217         struct snd_cs4231 *chip = card->private_data;
1218         struct snd_pcm *pcm;
1219         int err;
1220
1221         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1222         if (err < 0)
1223                 return err;
1224
1225         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1226                         &snd_cs4231_playback_ops);
1227         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1228                         &snd_cs4231_capture_ops);
1229
1230         /* global setup */
1231         pcm->private_data = chip;
1232         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1233         strcpy(pcm->name, "CS4231");
1234
1235         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
1236                                        &chip->op->dev, 64 * 1024, 128 * 1024);
1237
1238         chip->pcm = pcm;
1239
1240         return 0;
1241 }
1242
1243 static int snd_cs4231_timer(struct snd_card *card)
1244 {
1245         struct snd_cs4231 *chip = card->private_data;
1246         struct snd_timer *timer;
1247         struct snd_timer_id tid;
1248         int err;
1249
1250         /* Timer initialization */
1251         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1252         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1253         tid.card = card->number;
1254         tid.device = 0;
1255         tid.subdevice = 0;
1256         err = snd_timer_new(card, "CS4231", &tid, &timer);
1257         if (err < 0)
1258                 return err;
1259         strcpy(timer->name, "CS4231");
1260         timer->private_data = chip;
1261         timer->hw = snd_cs4231_timer_table;
1262         chip->timer = timer;
1263
1264         return 0;
1265 }
1266
1267 /*
1268  *  MIXER part
1269  */
1270
1271 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1272                                struct snd_ctl_elem_info *uinfo)
1273 {
1274         static const char * const texts[4] = {
1275                 "Line", "CD", "Mic", "Mix"
1276         };
1277
1278         return snd_ctl_enum_info(uinfo, 2, 4, texts);
1279 }
1280
1281 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1282                               struct snd_ctl_elem_value *ucontrol)
1283 {
1284         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1285         unsigned long flags;
1286
1287         spin_lock_irqsave(&chip->lock, flags);
1288         ucontrol->value.enumerated.item[0] =
1289                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1290         ucontrol->value.enumerated.item[1] =
1291                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1292         spin_unlock_irqrestore(&chip->lock, flags);
1293
1294         return 0;
1295 }
1296
1297 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1298                               struct snd_ctl_elem_value *ucontrol)
1299 {
1300         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1301         unsigned long flags;
1302         unsigned short left, right;
1303         int change;
1304
1305         if (ucontrol->value.enumerated.item[0] > 3 ||
1306             ucontrol->value.enumerated.item[1] > 3)
1307                 return -EINVAL;
1308         left = ucontrol->value.enumerated.item[0] << 6;
1309         right = ucontrol->value.enumerated.item[1] << 6;
1310
1311         spin_lock_irqsave(&chip->lock, flags);
1312
1313         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1314         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1315         change = left != chip->image[CS4231_LEFT_INPUT] ||
1316                  right != chip->image[CS4231_RIGHT_INPUT];
1317         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1318         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1319
1320         spin_unlock_irqrestore(&chip->lock, flags);
1321
1322         return change;
1323 }
1324
1325 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1326                                   struct snd_ctl_elem_info *uinfo)
1327 {
1328         int mask = (kcontrol->private_value >> 16) & 0xff;
1329
1330         uinfo->type = (mask == 1) ?
1331                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1332         uinfo->count = 1;
1333         uinfo->value.integer.min = 0;
1334         uinfo->value.integer.max = mask;
1335
1336         return 0;
1337 }
1338
1339 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1340                                  struct snd_ctl_elem_value *ucontrol)
1341 {
1342         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1343         unsigned long flags;
1344         int reg = kcontrol->private_value & 0xff;
1345         int shift = (kcontrol->private_value >> 8) & 0xff;
1346         int mask = (kcontrol->private_value >> 16) & 0xff;
1347         int invert = (kcontrol->private_value >> 24) & 0xff;
1348
1349         spin_lock_irqsave(&chip->lock, flags);
1350
1351         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1352
1353         spin_unlock_irqrestore(&chip->lock, flags);
1354
1355         if (invert)
1356                 ucontrol->value.integer.value[0] =
1357                         (mask - ucontrol->value.integer.value[0]);
1358
1359         return 0;
1360 }
1361
1362 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1363                                  struct snd_ctl_elem_value *ucontrol)
1364 {
1365         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1366         unsigned long flags;
1367         int reg = kcontrol->private_value & 0xff;
1368         int shift = (kcontrol->private_value >> 8) & 0xff;
1369         int mask = (kcontrol->private_value >> 16) & 0xff;
1370         int invert = (kcontrol->private_value >> 24) & 0xff;
1371         int change;
1372         unsigned short val;
1373
1374         val = (ucontrol->value.integer.value[0] & mask);
1375         if (invert)
1376                 val = mask - val;
1377         val <<= shift;
1378
1379         spin_lock_irqsave(&chip->lock, flags);
1380
1381         val = (chip->image[reg] & ~(mask << shift)) | val;
1382         change = val != chip->image[reg];
1383         snd_cs4231_out(chip, reg, val);
1384
1385         spin_unlock_irqrestore(&chip->lock, flags);
1386
1387         return change;
1388 }
1389
1390 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1391                                   struct snd_ctl_elem_info *uinfo)
1392 {
1393         int mask = (kcontrol->private_value >> 24) & 0xff;
1394
1395         uinfo->type = mask == 1 ?
1396                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1397         uinfo->count = 2;
1398         uinfo->value.integer.min = 0;
1399         uinfo->value.integer.max = mask;
1400
1401         return 0;
1402 }
1403
1404 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1405                                  struct snd_ctl_elem_value *ucontrol)
1406 {
1407         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1408         unsigned long flags;
1409         int left_reg = kcontrol->private_value & 0xff;
1410         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1411         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1412         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1413         int mask = (kcontrol->private_value >> 24) & 0xff;
1414         int invert = (kcontrol->private_value >> 22) & 1;
1415
1416         spin_lock_irqsave(&chip->lock, flags);
1417
1418         ucontrol->value.integer.value[0] =
1419                 (chip->image[left_reg] >> shift_left) & mask;
1420         ucontrol->value.integer.value[1] =
1421                 (chip->image[right_reg] >> shift_right) & mask;
1422
1423         spin_unlock_irqrestore(&chip->lock, flags);
1424
1425         if (invert) {
1426                 ucontrol->value.integer.value[0] =
1427                         (mask - ucontrol->value.integer.value[0]);
1428                 ucontrol->value.integer.value[1] =
1429                         (mask - ucontrol->value.integer.value[1]);
1430         }
1431
1432         return 0;
1433 }
1434
1435 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1436                                  struct snd_ctl_elem_value *ucontrol)
1437 {
1438         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1439         unsigned long flags;
1440         int left_reg = kcontrol->private_value & 0xff;
1441         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1442         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1443         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1444         int mask = (kcontrol->private_value >> 24) & 0xff;
1445         int invert = (kcontrol->private_value >> 22) & 1;
1446         int change;
1447         unsigned short val1, val2;
1448
1449         val1 = ucontrol->value.integer.value[0] & mask;
1450         val2 = ucontrol->value.integer.value[1] & mask;
1451         if (invert) {
1452                 val1 = mask - val1;
1453                 val2 = mask - val2;
1454         }
1455         val1 <<= shift_left;
1456         val2 <<= shift_right;
1457
1458         spin_lock_irqsave(&chip->lock, flags);
1459
1460         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1461         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1462         change = val1 != chip->image[left_reg];
1463         change |= val2 != chip->image[right_reg];
1464         snd_cs4231_out(chip, left_reg, val1);
1465         snd_cs4231_out(chip, right_reg, val2);
1466
1467         spin_unlock_irqrestore(&chip->lock, flags);
1468
1469         return change;
1470 }
1471
1472 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1473 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1474   .info = snd_cs4231_info_single,       \
1475   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1476   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1477
1478 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1479                         shift_right, mask, invert) \
1480 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1481   .info = snd_cs4231_info_double,       \
1482   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1483   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1484                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1485
1486 static const struct snd_kcontrol_new snd_cs4231_controls[] = {
1487 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1488                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1489 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1490                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1491 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1492                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1493 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1494                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1495 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1496                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1497 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1498                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1499 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1500                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1501 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1502                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1503 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1504 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1505 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1506 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1507 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1508                 15, 0),
1509 {
1510         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1511         .name   = "Capture Source",
1512         .info   = snd_cs4231_info_mux,
1513         .get    = snd_cs4231_get_mux,
1514         .put    = snd_cs4231_put_mux,
1515 },
1516 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1517                 1, 0),
1518 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1519 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1520 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1521 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1522 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1523 };
1524
1525 static int snd_cs4231_mixer(struct snd_card *card)
1526 {
1527         struct snd_cs4231 *chip = card->private_data;
1528         int err, idx;
1529
1530         if (snd_BUG_ON(!chip || !chip->pcm))
1531                 return -EINVAL;
1532
1533         strcpy(card->mixername, chip->pcm->name);
1534
1535         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1536                 err = snd_ctl_add(card,
1537                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1538                 if (err < 0)
1539                         return err;
1540         }
1541         return 0;
1542 }
1543
1544 static int dev;
1545
1546 static int cs4231_attach_begin(struct platform_device *op,
1547                                struct snd_card **rcard)
1548 {
1549         struct snd_card *card;
1550         struct snd_cs4231 *chip;
1551         int err;
1552
1553         *rcard = NULL;
1554
1555         if (dev >= SNDRV_CARDS)
1556                 return -ENODEV;
1557
1558         if (!enable[dev]) {
1559                 dev++;
1560                 return -ENOENT;
1561         }
1562
1563         err = snd_card_new(&op->dev, index[dev], id[dev], THIS_MODULE,
1564                            sizeof(struct snd_cs4231), &card);
1565         if (err < 0)
1566                 return err;
1567
1568         strcpy(card->driver, "CS4231");
1569         strcpy(card->shortname, "Sun CS4231");
1570
1571         chip = card->private_data;
1572         chip->card = card;
1573
1574         *rcard = card;
1575         return 0;
1576 }
1577
1578 static int cs4231_attach_finish(struct snd_card *card)
1579 {
1580         struct snd_cs4231 *chip = card->private_data;
1581         int err;
1582
1583         err = snd_cs4231_pcm(card);
1584         if (err < 0)
1585                 goto out_err;
1586
1587         err = snd_cs4231_mixer(card);
1588         if (err < 0)
1589                 goto out_err;
1590
1591         err = snd_cs4231_timer(card);
1592         if (err < 0)
1593                 goto out_err;
1594
1595         err = snd_card_register(card);
1596         if (err < 0)
1597                 goto out_err;
1598
1599         dev_set_drvdata(&chip->op->dev, chip);
1600
1601         dev++;
1602         return 0;
1603
1604 out_err:
1605         snd_card_free(card);
1606         return err;
1607 }
1608
1609 #ifdef SBUS_SUPPORT
1610
1611 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1612 {
1613         unsigned long flags;
1614         unsigned char status;
1615         u32 csr;
1616         struct snd_cs4231 *chip = dev_id;
1617
1618         /*This is IRQ is not raised by the cs4231*/
1619         if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1620                 return IRQ_NONE;
1621
1622         /* ACK the APC interrupt. */
1623         csr = sbus_readl(chip->port + APCCSR);
1624
1625         sbus_writel(csr, chip->port + APCCSR);
1626
1627         if ((csr & APC_PDMA_READY) &&
1628             (csr & APC_PLAY_INT) &&
1629             (csr & APC_XINT_PNVA) &&
1630             !(csr & APC_XINT_EMPT))
1631                         snd_cs4231_play_callback(chip);
1632
1633         if ((csr & APC_CDMA_READY) &&
1634             (csr & APC_CAPT_INT) &&
1635             (csr & APC_XINT_CNVA) &&
1636             !(csr & APC_XINT_EMPT))
1637                         snd_cs4231_capture_callback(chip);
1638
1639         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1640
1641         if (status & CS4231_TIMER_IRQ) {
1642                 if (chip->timer)
1643                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1644         }
1645
1646         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1647                 snd_cs4231_overrange(chip);
1648
1649         /* ACK the CS4231 interrupt. */
1650         spin_lock_irqsave(&chip->lock, flags);
1651         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1652         spin_unlock_irqrestore(&chip->lock, flags);
1653
1654         return IRQ_HANDLED;
1655 }
1656
1657 /*
1658  * SBUS DMA routines
1659  */
1660
1661 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1662                             dma_addr_t bus_addr, size_t len)
1663 {
1664         unsigned long flags;
1665         u32 test, csr;
1666         int err;
1667         struct sbus_dma_info *base = &dma_cont->sbus_info;
1668
1669         if (len >= (1 << 24))
1670                 return -EINVAL;
1671         spin_lock_irqsave(&base->lock, flags);
1672         csr = sbus_readl(base->regs + APCCSR);
1673         err = -EINVAL;
1674         test = APC_CDMA_READY;
1675         if (base->dir == APC_PLAY)
1676                 test = APC_PDMA_READY;
1677         if (!(csr & test))
1678                 goto out;
1679         err = -EBUSY;
1680         test = APC_XINT_CNVA;
1681         if (base->dir == APC_PLAY)
1682                 test = APC_XINT_PNVA;
1683         if (!(csr & test))
1684                 goto out;
1685         err = 0;
1686         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1687         sbus_writel(len, base->regs + base->dir + APCNC);
1688 out:
1689         spin_unlock_irqrestore(&base->lock, flags);
1690         return err;
1691 }
1692
1693 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1694 {
1695         unsigned long flags;
1696         u32 csr, test;
1697         struct sbus_dma_info *base = &dma_cont->sbus_info;
1698
1699         spin_lock_irqsave(&base->lock, flags);
1700         csr = sbus_readl(base->regs + APCCSR);
1701         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1702                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1703                  APC_XINT_PENA;
1704         if (base->dir == APC_RECORD)
1705                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1706                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1707         csr |= test;
1708         sbus_writel(csr, base->regs + APCCSR);
1709         spin_unlock_irqrestore(&base->lock, flags);
1710 }
1711
1712 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1713 {
1714         unsigned long flags;
1715         u32 csr, shift;
1716         struct sbus_dma_info *base = &dma_cont->sbus_info;
1717
1718         spin_lock_irqsave(&base->lock, flags);
1719         if (!on) {
1720                 sbus_writel(0, base->regs + base->dir + APCNC);
1721                 sbus_writel(0, base->regs + base->dir + APCNVA);
1722                 if (base->dir == APC_PLAY) {
1723                         sbus_writel(0, base->regs + base->dir + APCC);
1724                         sbus_writel(0, base->regs + base->dir + APCVA);
1725                 }
1726
1727                 udelay(1200);
1728         }
1729         csr = sbus_readl(base->regs + APCCSR);
1730         shift = 0;
1731         if (base->dir == APC_PLAY)
1732                 shift = 1;
1733         if (on)
1734                 csr &= ~(APC_CPAUSE << shift);
1735         else
1736                 csr |= (APC_CPAUSE << shift);
1737         sbus_writel(csr, base->regs + APCCSR);
1738         if (on)
1739                 csr |= (APC_CDMA_READY << shift);
1740         else
1741                 csr &= ~(APC_CDMA_READY << shift);
1742         sbus_writel(csr, base->regs + APCCSR);
1743
1744         spin_unlock_irqrestore(&base->lock, flags);
1745 }
1746
1747 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1748 {
1749         struct sbus_dma_info *base = &dma_cont->sbus_info;
1750
1751         return sbus_readl(base->regs + base->dir + APCVA);
1752 }
1753
1754 /*
1755  * Init and exit routines
1756  */
1757
1758 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1759 {
1760         struct platform_device *op = chip->op;
1761
1762         if (chip->irq[0])
1763                 free_irq(chip->irq[0], chip);
1764
1765         if (chip->port)
1766                 of_iounmap(&op->resource[0], chip->port, chip->regs_size);
1767
1768         return 0;
1769 }
1770
1771 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1772 {
1773         struct snd_cs4231 *cp = device->device_data;
1774
1775         return snd_cs4231_sbus_free(cp);
1776 }
1777
1778 static const struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1779         .dev_free       =       snd_cs4231_sbus_dev_free,
1780 };
1781
1782 static int snd_cs4231_sbus_create(struct snd_card *card,
1783                                   struct platform_device *op,
1784                                   int dev)
1785 {
1786         struct snd_cs4231 *chip = card->private_data;
1787         int err;
1788
1789         spin_lock_init(&chip->lock);
1790         spin_lock_init(&chip->c_dma.sbus_info.lock);
1791         spin_lock_init(&chip->p_dma.sbus_info.lock);
1792         mutex_init(&chip->mce_mutex);
1793         mutex_init(&chip->open_mutex);
1794         chip->op = op;
1795         chip->regs_size = resource_size(&op->resource[0]);
1796         memcpy(&chip->image, &snd_cs4231_original_image,
1797                sizeof(snd_cs4231_original_image));
1798
1799         chip->port = of_ioremap(&op->resource[0], 0,
1800                                 chip->regs_size, "cs4231");
1801         if (!chip->port) {
1802                 dev_dbg(chip->card->dev,
1803                         "cs4231-%d: Unable to map chip registers.\n", dev);
1804                 return -EIO;
1805         }
1806
1807         chip->c_dma.sbus_info.regs = chip->port;
1808         chip->p_dma.sbus_info.regs = chip->port;
1809         chip->c_dma.sbus_info.dir = APC_RECORD;
1810         chip->p_dma.sbus_info.dir = APC_PLAY;
1811
1812         chip->p_dma.prepare = sbus_dma_prepare;
1813         chip->p_dma.enable = sbus_dma_enable;
1814         chip->p_dma.request = sbus_dma_request;
1815         chip->p_dma.address = sbus_dma_addr;
1816
1817         chip->c_dma.prepare = sbus_dma_prepare;
1818         chip->c_dma.enable = sbus_dma_enable;
1819         chip->c_dma.request = sbus_dma_request;
1820         chip->c_dma.address = sbus_dma_addr;
1821
1822         if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
1823                         IRQF_SHARED, "cs4231", chip)) {
1824                 dev_dbg(chip->card->dev,
1825                         "cs4231-%d: Unable to grab SBUS IRQ %d\n",
1826                         dev, op->archdata.irqs[0]);
1827                 snd_cs4231_sbus_free(chip);
1828                 return -EBUSY;
1829         }
1830         chip->irq[0] = op->archdata.irqs[0];
1831
1832         if (snd_cs4231_probe(chip) < 0) {
1833                 snd_cs4231_sbus_free(chip);
1834                 return -ENODEV;
1835         }
1836         snd_cs4231_init(chip);
1837
1838         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1839                              chip, &snd_cs4231_sbus_dev_ops);
1840         if (err < 0) {
1841                 snd_cs4231_sbus_free(chip);
1842                 return err;
1843         }
1844
1845         return 0;
1846 }
1847
1848 static int cs4231_sbus_probe(struct platform_device *op)
1849 {
1850         struct resource *rp = &op->resource[0];
1851         struct snd_card *card;
1852         int err;
1853
1854         err = cs4231_attach_begin(op, &card);
1855         if (err)
1856                 return err;
1857
1858         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1859                 card->shortname,
1860                 rp->flags & 0xffL,
1861                 (unsigned long long)rp->start,
1862                 op->archdata.irqs[0]);
1863
1864         err = snd_cs4231_sbus_create(card, op, dev);
1865         if (err < 0) {
1866                 snd_card_free(card);
1867                 return err;
1868         }
1869
1870         return cs4231_attach_finish(card);
1871 }
1872 #endif
1873
1874 #ifdef EBUS_SUPPORT
1875
1876 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1877                                           void *cookie)
1878 {
1879         struct snd_cs4231 *chip = cookie;
1880
1881         snd_cs4231_play_callback(chip);
1882 }
1883
1884 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1885                                              int event, void *cookie)
1886 {
1887         struct snd_cs4231 *chip = cookie;
1888
1889         snd_cs4231_capture_callback(chip);
1890 }
1891
1892 /*
1893  * EBUS DMA wrappers
1894  */
1895
1896 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1897                              dma_addr_t bus_addr, size_t len)
1898 {
1899         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1900 }
1901
1902 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1903 {
1904         ebus_dma_enable(&dma_cont->ebus_info, on);
1905 }
1906
1907 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1908 {
1909         ebus_dma_prepare(&dma_cont->ebus_info, dir);
1910 }
1911
1912 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1913 {
1914         return ebus_dma_addr(&dma_cont->ebus_info);
1915 }
1916
1917 /*
1918  * Init and exit routines
1919  */
1920
1921 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1922 {
1923         struct platform_device *op = chip->op;
1924
1925         if (chip->c_dma.ebus_info.regs) {
1926                 ebus_dma_unregister(&chip->c_dma.ebus_info);
1927                 of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
1928         }
1929         if (chip->p_dma.ebus_info.regs) {
1930                 ebus_dma_unregister(&chip->p_dma.ebus_info);
1931                 of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
1932         }
1933
1934         if (chip->port)
1935                 of_iounmap(&op->resource[0], chip->port, 0x10);
1936
1937         return 0;
1938 }
1939
1940 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1941 {
1942         struct snd_cs4231 *cp = device->device_data;
1943
1944         return snd_cs4231_ebus_free(cp);
1945 }
1946
1947 static const struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1948         .dev_free       =       snd_cs4231_ebus_dev_free,
1949 };
1950
1951 static int snd_cs4231_ebus_create(struct snd_card *card,
1952                                   struct platform_device *op,
1953                                   int dev)
1954 {
1955         struct snd_cs4231 *chip = card->private_data;
1956         int err;
1957
1958         spin_lock_init(&chip->lock);
1959         spin_lock_init(&chip->c_dma.ebus_info.lock);
1960         spin_lock_init(&chip->p_dma.ebus_info.lock);
1961         mutex_init(&chip->mce_mutex);
1962         mutex_init(&chip->open_mutex);
1963         chip->flags |= CS4231_FLAG_EBUS;
1964         chip->op = op;
1965         memcpy(&chip->image, &snd_cs4231_original_image,
1966                sizeof(snd_cs4231_original_image));
1967         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
1968         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1969         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
1970         chip->c_dma.ebus_info.client_cookie = chip;
1971         chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
1972         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
1973         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1974         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
1975         chip->p_dma.ebus_info.client_cookie = chip;
1976         chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
1977
1978         chip->p_dma.prepare = _ebus_dma_prepare;
1979         chip->p_dma.enable = _ebus_dma_enable;
1980         chip->p_dma.request = _ebus_dma_request;
1981         chip->p_dma.address = _ebus_dma_addr;
1982
1983         chip->c_dma.prepare = _ebus_dma_prepare;
1984         chip->c_dma.enable = _ebus_dma_enable;
1985         chip->c_dma.request = _ebus_dma_request;
1986         chip->c_dma.address = _ebus_dma_addr;
1987
1988         chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
1989         chip->p_dma.ebus_info.regs =
1990                 of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
1991         chip->c_dma.ebus_info.regs =
1992                 of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
1993         if (!chip->port || !chip->p_dma.ebus_info.regs ||
1994             !chip->c_dma.ebus_info.regs) {
1995                 snd_cs4231_ebus_free(chip);
1996                 dev_dbg(chip->card->dev,
1997                         "cs4231-%d: Unable to map chip registers.\n", dev);
1998                 return -EIO;
1999         }
2000
2001         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2002                 snd_cs4231_ebus_free(chip);
2003                 dev_dbg(chip->card->dev,
2004                         "cs4231-%d: Unable to register EBUS capture DMA\n",
2005                         dev);
2006                 return -EBUSY;
2007         }
2008         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2009                 snd_cs4231_ebus_free(chip);
2010                 dev_dbg(chip->card->dev,
2011                         "cs4231-%d: Unable to enable EBUS capture IRQ\n",
2012                         dev);
2013                 return -EBUSY;
2014         }
2015
2016         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2017                 snd_cs4231_ebus_free(chip);
2018                 dev_dbg(chip->card->dev,
2019                         "cs4231-%d: Unable to register EBUS play DMA\n",
2020                         dev);
2021                 return -EBUSY;
2022         }
2023         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2024                 snd_cs4231_ebus_free(chip);
2025                 dev_dbg(chip->card->dev,
2026                         "cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2027                 return -EBUSY;
2028         }
2029
2030         if (snd_cs4231_probe(chip) < 0) {
2031                 snd_cs4231_ebus_free(chip);
2032                 return -ENODEV;
2033         }
2034         snd_cs4231_init(chip);
2035
2036         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2037                              chip, &snd_cs4231_ebus_dev_ops);
2038         if (err < 0) {
2039                 snd_cs4231_ebus_free(chip);
2040                 return err;
2041         }
2042
2043         return 0;
2044 }
2045
2046 static int cs4231_ebus_probe(struct platform_device *op)
2047 {
2048         struct snd_card *card;
2049         int err;
2050
2051         err = cs4231_attach_begin(op, &card);
2052         if (err)
2053                 return err;
2054
2055         sprintf(card->longname, "%s at 0x%llx, irq %d",
2056                 card->shortname,
2057                 op->resource[0].start,
2058                 op->archdata.irqs[0]);
2059
2060         err = snd_cs4231_ebus_create(card, op, dev);
2061         if (err < 0) {
2062                 snd_card_free(card);
2063                 return err;
2064         }
2065
2066         return cs4231_attach_finish(card);
2067 }
2068 #endif
2069
2070 static int cs4231_probe(struct platform_device *op)
2071 {
2072 #ifdef EBUS_SUPPORT
2073         if (of_node_name_eq(op->dev.of_node->parent, "ebus"))
2074                 return cs4231_ebus_probe(op);
2075 #endif
2076 #ifdef SBUS_SUPPORT
2077         if (of_node_name_eq(op->dev.of_node->parent, "sbus") ||
2078             of_node_name_eq(op->dev.of_node->parent, "sbi"))
2079                 return cs4231_sbus_probe(op);
2080 #endif
2081         return -ENODEV;
2082 }
2083
2084 static void cs4231_remove(struct platform_device *op)
2085 {
2086         struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
2087
2088         snd_card_free(chip->card);
2089 }
2090
2091 static const struct of_device_id cs4231_match[] = {
2092         {
2093                 .name = "SUNW,CS4231",
2094         },
2095         {
2096                 .name = "audio",
2097                 .compatible = "SUNW,CS4231",
2098         },
2099         {},
2100 };
2101
2102 MODULE_DEVICE_TABLE(of, cs4231_match);
2103
2104 static struct platform_driver cs4231_driver = {
2105         .driver = {
2106                 .name = "audio",
2107                 .of_match_table = cs4231_match,
2108         },
2109         .probe          = cs4231_probe,
2110         .remove         = cs4231_remove,
2111 };
2112
2113 module_platform_driver(cs4231_driver);