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