linux/sound/sparc/cs4231.c
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   1/*
   2 * Driver for CS4231 sound chips found on Sparcs.
   3 * Copyright (C) 2002, 2008 David S. Miller <davem@davemloft.net>
   4 *
   5 * Based entirely upon drivers/sbus/audio/cs4231.c which is:
   6 * Copyright (C) 1996, 1997, 1998 Derrick J Brashear (shadow@andrew.cmu.edu)
   7 * and also sound/isa/cs423x/cs4231_lib.c which is:
   8 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   9 */
  10
  11#include <linux/module.h>
  12#include <linux/kernel.h>
  13#include <linux/delay.h>
  14#include <linux/init.h>
  15#include <linux/interrupt.h>
  16#include <linux/moduleparam.h>
  17#include <linux/irq.h>
  18#include <linux/io.h>
  19#include <linux/of.h>
  20#include <linux/of_device.h>
  21
  22#include <sound/core.h>
  23#include <sound/pcm.h>
  24#include <sound/info.h>
  25#include <sound/control.h>
  26#include <sound/timer.h>
  27#include <sound/initval.h>
  28#include <sound/pcm_params.h>
  29
  30#ifdef CONFIG_SBUS
  31#define SBUS_SUPPORT
  32#endif
  33
  34#if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
  35#define EBUS_SUPPORT
  36#include <linux/pci.h>
  37#include <asm/ebus_dma.h>
  38#endif
  39
  40static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  41static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  42/* Enable this card */
  43static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  44
  45module_param_array(index, int, NULL, 0444);
  46MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
  47module_param_array(id, charp, NULL, 0444);
  48MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
  49module_param_array(enable, bool, NULL, 0444);
  50MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
  51MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
  52MODULE_DESCRIPTION("Sun CS4231");
  53MODULE_LICENSE("GPL");
  54MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
  55
  56#ifdef SBUS_SUPPORT
  57struct sbus_dma_info {
  58       spinlock_t       lock;   /* DMA access lock */
  59       int              dir;
  60       void __iomem     *regs;
  61};
  62#endif
  63
  64struct snd_cs4231;
  65struct 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
  80struct 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
 186static 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
 203static unsigned int rates[14] = {
 204        5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
 205        27042, 32000, 33075, 37800, 44100, 48000
 206};
 207
 208static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 209        .count  = ARRAY_SIZE(rates),
 210        .list   = rates,
 211};
 212
 213static 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
 220static 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
 256static 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
 264static 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
 277static 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
 289static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
 290                            unsigned char value)
 291{
 292        snd_cs4231_ready(chip);
 293#ifdef CONFIG_SND_DEBUG
 294        if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 295                snd_printdd("out: auto calibration time out - reg = 0x%x, "
 296                            "value = 0x%x\n",
 297                            reg, value);
 298#endif
 299        __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 300        wmb();
 301        __cs4231_writeb(chip, value, CS4231U(chip, REG));
 302        mb();
 303}
 304
 305static 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
 315static 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
 323static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
 324{
 325        snd_cs4231_ready(chip);
 326#ifdef CONFIG_SND_DEBUG
 327        if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 328                snd_printdd("in: auto calibration time out - reg = 0x%x\n",
 329                            reg);
 330#endif
 331        __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 332        mb();
 333        return __cs4231_readb(chip, CS4231U(chip, REG));
 334}
 335
 336/*
 337 *  CS4231 detection / MCE routines
 338 */
 339
 340static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 341{
 342        int timeout;
 343
 344        /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
 345        for (timeout = 5; timeout > 0; timeout--)
 346                __cs4231_readb(chip, CS4231U(chip, REGSEL));
 347
 348        /* end of cleanup sequence */
 349        for (timeout = 500; timeout > 0; timeout--) {
 350                int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 351                if ((val & CS4231_INIT) == 0)
 352                        break;
 353                msleep(1);
 354        }
 355}
 356
 357static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 358{
 359        unsigned long flags;
 360        int timeout;
 361
 362        spin_lock_irqsave(&chip->lock, flags);
 363        snd_cs4231_ready(chip);
 364#ifdef CONFIG_SND_DEBUG
 365        if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 366                snd_printdd("mce_up - auto calibration time out (0)\n");
 367#endif
 368        chip->mce_bit |= CS4231_MCE;
 369        timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 370        if (timeout == 0x80)
 371                snd_printdd("mce_up [%p]: serious init problem - "
 372                            "codec still busy\n",
 373                            chip->port);
 374        if (!(timeout & CS4231_MCE))
 375                __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
 376                                CS4231U(chip, REGSEL));
 377        spin_unlock_irqrestore(&chip->lock, flags);
 378}
 379
 380static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 381{
 382        unsigned long flags, timeout;
 383        int reg;
 384
 385        snd_cs4231_busy_wait(chip);
 386        spin_lock_irqsave(&chip->lock, flags);
 387#ifdef CONFIG_SND_DEBUG
 388        if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 389                snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
 390                            CS4231U(chip, REGSEL));
 391#endif
 392        chip->mce_bit &= ~CS4231_MCE;
 393        reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 394        __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
 395                        CS4231U(chip, REGSEL));
 396        if (reg == 0x80)
 397                snd_printdd("mce_down [%p]: serious init problem "
 398                            "- codec still busy\n", chip->port);
 399        if ((reg & CS4231_MCE) == 0) {
 400                spin_unlock_irqrestore(&chip->lock, flags);
 401                return;
 402        }
 403
 404        /*
 405         * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 406         */
 407        timeout = jiffies + msecs_to_jiffies(250);
 408        do {
 409                spin_unlock_irqrestore(&chip->lock, flags);
 410                msleep(1);
 411                spin_lock_irqsave(&chip->lock, flags);
 412                reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
 413                reg &= CS4231_CALIB_IN_PROGRESS;
 414        } while (reg && time_before(jiffies, timeout));
 415        spin_unlock_irqrestore(&chip->lock, flags);
 416
 417        if (reg)
 418                snd_printk(KERN_ERR
 419                           "mce_down - auto calibration time out (2)\n");
 420}
 421
 422static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
 423                                   struct snd_pcm_substream *substream,
 424                                   unsigned int *periods_sent)
 425{
 426        struct snd_pcm_runtime *runtime = substream->runtime;
 427
 428        while (1) {
 429                unsigned int period_size = snd_pcm_lib_period_bytes(substream);
 430                unsigned int offset = period_size * (*periods_sent);
 431
 432                BUG_ON(period_size >= (1 << 24));
 433
 434                if (dma_cont->request(dma_cont,
 435                                      runtime->dma_addr + offset, period_size))
 436                        return;
 437                (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 438        }
 439}
 440
 441static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
 442                               unsigned int what, int on)
 443{
 444        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 445        struct cs4231_dma_control *dma_cont;
 446
 447        if (what & CS4231_PLAYBACK_ENABLE) {
 448                dma_cont = &chip->p_dma;
 449                if (on) {
 450                        dma_cont->prepare(dma_cont, 0);
 451                        dma_cont->enable(dma_cont, 1);
 452                        snd_cs4231_advance_dma(dma_cont,
 453                                chip->playback_substream,
 454                                &chip->p_periods_sent);
 455                } else {
 456                        dma_cont->enable(dma_cont, 0);
 457                }
 458        }
 459        if (what & CS4231_RECORD_ENABLE) {
 460                dma_cont = &chip->c_dma;
 461                if (on) {
 462                        dma_cont->prepare(dma_cont, 1);
 463                        dma_cont->enable(dma_cont, 1);
 464                        snd_cs4231_advance_dma(dma_cont,
 465                                chip->capture_substream,
 466                                &chip->c_periods_sent);
 467                } else {
 468                        dma_cont->enable(dma_cont, 0);
 469                }
 470        }
 471}
 472
 473static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
 474{
 475        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 476        int result = 0;
 477
 478        switch (cmd) {
 479        case SNDRV_PCM_TRIGGER_START:
 480        case SNDRV_PCM_TRIGGER_STOP:
 481        {
 482                unsigned int what = 0;
 483                struct snd_pcm_substream *s;
 484                unsigned long flags;
 485
 486                snd_pcm_group_for_each_entry(s, substream) {
 487                        if (s == chip->playback_substream) {
 488                                what |= CS4231_PLAYBACK_ENABLE;
 489                                snd_pcm_trigger_done(s, substream);
 490                        } else if (s == chip->capture_substream) {
 491                                what |= CS4231_RECORD_ENABLE;
 492                                snd_pcm_trigger_done(s, substream);
 493                        }
 494                }
 495
 496                spin_lock_irqsave(&chip->lock, flags);
 497                if (cmd == SNDRV_PCM_TRIGGER_START) {
 498                        cs4231_dma_trigger(substream, what, 1);
 499                        chip->image[CS4231_IFACE_CTRL] |= what;
 500                } else {
 501                        cs4231_dma_trigger(substream, what, 0);
 502                        chip->image[CS4231_IFACE_CTRL] &= ~what;
 503                }
 504                snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 505                               chip->image[CS4231_IFACE_CTRL]);
 506                spin_unlock_irqrestore(&chip->lock, flags);
 507                break;
 508        }
 509        default:
 510                result = -EINVAL;
 511                break;
 512        }
 513
 514        return result;
 515}
 516
 517/*
 518 *  CODEC I/O
 519 */
 520
 521static unsigned char snd_cs4231_get_rate(unsigned int rate)
 522{
 523        int i;
 524
 525        for (i = 0; i < 14; i++)
 526                if (rate == rates[i])
 527                        return freq_bits[i];
 528
 529        return freq_bits[13];
 530}
 531
 532static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
 533                                           int channels)
 534{
 535        unsigned char rformat;
 536
 537        rformat = CS4231_LINEAR_8;
 538        switch (format) {
 539        case SNDRV_PCM_FORMAT_MU_LAW:
 540                rformat = CS4231_ULAW_8;
 541                break;
 542        case SNDRV_PCM_FORMAT_A_LAW:
 543                rformat = CS4231_ALAW_8;
 544                break;
 545        case SNDRV_PCM_FORMAT_S16_LE:
 546                rformat = CS4231_LINEAR_16;
 547                break;
 548        case SNDRV_PCM_FORMAT_S16_BE:
 549                rformat = CS4231_LINEAR_16_BIG;
 550                break;
 551        case SNDRV_PCM_FORMAT_IMA_ADPCM:
 552                rformat = CS4231_ADPCM_16;
 553                break;
 554        }
 555        if (channels > 1)
 556                rformat |= CS4231_STEREO;
 557        return rformat;
 558}
 559
 560static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 561{
 562        unsigned long flags;
 563
 564        mute = mute ? 1 : 0;
 565        spin_lock_irqsave(&chip->lock, flags);
 566        if (chip->calibrate_mute == mute) {
 567                spin_unlock_irqrestore(&chip->lock, flags);
 568                return;
 569        }
 570        if (!mute) {
 571                snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 572                                chip->image[CS4231_LEFT_INPUT]);
 573                snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 574                                chip->image[CS4231_RIGHT_INPUT]);
 575                snd_cs4231_dout(chip, CS4231_LOOPBACK,
 576                                chip->image[CS4231_LOOPBACK]);
 577        }
 578        snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 579                        mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 580        snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 581                        mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 582        snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 583                        mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 584        snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 585                        mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 586        snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 587                        mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 588        snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 589                        mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 590        snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 591                        mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 592        snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 593                        mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 594        snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 595                        mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 596        chip->calibrate_mute = mute;
 597        spin_unlock_irqrestore(&chip->lock, flags);
 598}
 599
 600static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 601                                       struct snd_pcm_hw_params *params,
 602                                       unsigned char pdfr)
 603{
 604        unsigned long flags;
 605
 606        mutex_lock(&chip->mce_mutex);
 607        snd_cs4231_calibrate_mute(chip, 1);
 608
 609        snd_cs4231_mce_up(chip);
 610
 611        spin_lock_irqsave(&chip->lock, flags);
 612        snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 613                       (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 614                       (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 615                       pdfr);
 616        spin_unlock_irqrestore(&chip->lock, flags);
 617
 618        snd_cs4231_mce_down(chip);
 619
 620        snd_cs4231_calibrate_mute(chip, 0);
 621        mutex_unlock(&chip->mce_mutex);
 622}
 623
 624static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 625                                      struct snd_pcm_hw_params *params,
 626                                      unsigned char cdfr)
 627{
 628        unsigned long flags;
 629
 630        mutex_lock(&chip->mce_mutex);
 631        snd_cs4231_calibrate_mute(chip, 1);
 632
 633        snd_cs4231_mce_up(chip);
 634
 635        spin_lock_irqsave(&chip->lock, flags);
 636        if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 637                snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 638                               ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 639                               (cdfr & 0x0f));
 640                spin_unlock_irqrestore(&chip->lock, flags);
 641                snd_cs4231_mce_down(chip);
 642                snd_cs4231_mce_up(chip);
 643                spin_lock_irqsave(&chip->lock, flags);
 644        }
 645        snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 646        spin_unlock_irqrestore(&chip->lock, flags);
 647
 648        snd_cs4231_mce_down(chip);
 649
 650        snd_cs4231_calibrate_mute(chip, 0);
 651        mutex_unlock(&chip->mce_mutex);
 652}
 653
 654/*
 655 *  Timer interface
 656 */
 657
 658static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
 659{
 660        struct snd_cs4231 *chip = snd_timer_chip(timer);
 661
 662        return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 663}
 664
 665static int snd_cs4231_timer_start(struct snd_timer *timer)
 666{
 667        unsigned long flags;
 668        unsigned int ticks;
 669        struct snd_cs4231 *chip = snd_timer_chip(timer);
 670
 671        spin_lock_irqsave(&chip->lock, flags);
 672        ticks = timer->sticks;
 673        if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 674            (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 675            (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 676                snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 677                               chip->image[CS4231_TIMER_HIGH] =
 678                               (unsigned char) (ticks >> 8));
 679                snd_cs4231_out(chip, CS4231_TIMER_LOW,
 680                               chip->image[CS4231_TIMER_LOW] =
 681                               (unsigned char) ticks);
 682                snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 683                               chip->image[CS4231_ALT_FEATURE_1] |
 684                                        CS4231_TIMER_ENABLE);
 685        }
 686        spin_unlock_irqrestore(&chip->lock, flags);
 687
 688        return 0;
 689}
 690
 691static int snd_cs4231_timer_stop(struct snd_timer *timer)
 692{
 693        unsigned long flags;
 694        struct snd_cs4231 *chip = snd_timer_chip(timer);
 695
 696        spin_lock_irqsave(&chip->lock, flags);
 697        chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
 698        snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 699                       chip->image[CS4231_ALT_FEATURE_1]);
 700        spin_unlock_irqrestore(&chip->lock, flags);
 701
 702        return 0;
 703}
 704
 705static void __devinit snd_cs4231_init(struct snd_cs4231 *chip)
 706{
 707        unsigned long flags;
 708
 709        snd_cs4231_mce_down(chip);
 710
 711#ifdef SNDRV_DEBUG_MCE
 712        snd_printdd("init: (1)\n");
 713#endif
 714        snd_cs4231_mce_up(chip);
 715        spin_lock_irqsave(&chip->lock, flags);
 716        chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 717                                            CS4231_PLAYBACK_PIO |
 718                                            CS4231_RECORD_ENABLE |
 719                                            CS4231_RECORD_PIO |
 720                                            CS4231_CALIB_MODE);
 721        chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 722        snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 723        spin_unlock_irqrestore(&chip->lock, flags);
 724        snd_cs4231_mce_down(chip);
 725
 726#ifdef SNDRV_DEBUG_MCE
 727        snd_printdd("init: (2)\n");
 728#endif
 729
 730        snd_cs4231_mce_up(chip);
 731        spin_lock_irqsave(&chip->lock, flags);
 732        snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 733                        chip->image[CS4231_ALT_FEATURE_1]);
 734        spin_unlock_irqrestore(&chip->lock, flags);
 735        snd_cs4231_mce_down(chip);
 736
 737#ifdef SNDRV_DEBUG_MCE
 738        snd_printdd("init: (3) - afei = 0x%x\n",
 739                    chip->image[CS4231_ALT_FEATURE_1]);
 740#endif
 741
 742        spin_lock_irqsave(&chip->lock, flags);
 743        snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
 744                        chip->image[CS4231_ALT_FEATURE_2]);
 745        spin_unlock_irqrestore(&chip->lock, flags);
 746
 747        snd_cs4231_mce_up(chip);
 748        spin_lock_irqsave(&chip->lock, flags);
 749        snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 750                        chip->image[CS4231_PLAYBK_FORMAT]);
 751        spin_unlock_irqrestore(&chip->lock, flags);
 752        snd_cs4231_mce_down(chip);
 753
 754#ifdef SNDRV_DEBUG_MCE
 755        snd_printdd("init: (4)\n");
 756#endif
 757
 758        snd_cs4231_mce_up(chip);
 759        spin_lock_irqsave(&chip->lock, flags);
 760        snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 761        spin_unlock_irqrestore(&chip->lock, flags);
 762        snd_cs4231_mce_down(chip);
 763
 764#ifdef SNDRV_DEBUG_MCE
 765        snd_printdd("init: (5)\n");
 766#endif
 767}
 768
 769static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 770{
 771        unsigned long flags;
 772
 773        mutex_lock(&chip->open_mutex);
 774        if ((chip->mode & mode)) {
 775                mutex_unlock(&chip->open_mutex);
 776                return -EAGAIN;
 777        }
 778        if (chip->mode & CS4231_MODE_OPEN) {
 779                chip->mode |= mode;
 780                mutex_unlock(&chip->open_mutex);
 781                return 0;
 782        }
 783        /* ok. now enable and ack CODEC IRQ */
 784        spin_lock_irqsave(&chip->lock, flags);
 785        snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 786                       CS4231_RECORD_IRQ |
 787                       CS4231_TIMER_IRQ);
 788        snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 789        __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 790        __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 791
 792        snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 793                       CS4231_RECORD_IRQ |
 794                       CS4231_TIMER_IRQ);
 795        snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 796
 797        spin_unlock_irqrestore(&chip->lock, flags);
 798
 799        chip->mode = mode;
 800        mutex_unlock(&chip->open_mutex);
 801        return 0;
 802}
 803
 804static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 805{
 806        unsigned long flags;
 807
 808        mutex_lock(&chip->open_mutex);
 809        chip->mode &= ~mode;
 810        if (chip->mode & CS4231_MODE_OPEN) {
 811                mutex_unlock(&chip->open_mutex);
 812                return;
 813        }
 814        snd_cs4231_calibrate_mute(chip, 1);
 815
 816        /* disable IRQ */
 817        spin_lock_irqsave(&chip->lock, flags);
 818        snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 819        __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 820        __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 821
 822        /* now disable record & playback */
 823
 824        if (chip->image[CS4231_IFACE_CTRL] &
 825            (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 826             CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 827                spin_unlock_irqrestore(&chip->lock, flags);
 828                snd_cs4231_mce_up(chip);
 829                spin_lock_irqsave(&chip->lock, flags);
 830                chip->image[CS4231_IFACE_CTRL] &=
 831                        ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 832                          CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 833                snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 834                                chip->image[CS4231_IFACE_CTRL]);
 835                spin_unlock_irqrestore(&chip->lock, flags);
 836                snd_cs4231_mce_down(chip);
 837                spin_lock_irqsave(&chip->lock, flags);
 838        }
 839
 840        /* clear IRQ again */
 841        snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 842        __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 843        __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 844        spin_unlock_irqrestore(&chip->lock, flags);
 845
 846        snd_cs4231_calibrate_mute(chip, 0);
 847
 848        chip->mode = 0;
 849        mutex_unlock(&chip->open_mutex);
 850}
 851
 852/*
 853 *  timer open/close
 854 */
 855
 856static int snd_cs4231_timer_open(struct snd_timer *timer)
 857{
 858        struct snd_cs4231 *chip = snd_timer_chip(timer);
 859        snd_cs4231_open(chip, CS4231_MODE_TIMER);
 860        return 0;
 861}
 862
 863static int snd_cs4231_timer_close(struct snd_timer *timer)
 864{
 865        struct snd_cs4231 *chip = snd_timer_chip(timer);
 866        snd_cs4231_close(chip, CS4231_MODE_TIMER);
 867        return 0;
 868}
 869
 870static struct snd_timer_hardware snd_cs4231_timer_table = {
 871        .flags          =       SNDRV_TIMER_HW_AUTO,
 872        .resolution     =       9945,
 873        .ticks          =       65535,
 874        .open           =       snd_cs4231_timer_open,
 875        .close          =       snd_cs4231_timer_close,
 876        .c_resolution   =       snd_cs4231_timer_resolution,
 877        .start          =       snd_cs4231_timer_start,
 878        .stop           =       snd_cs4231_timer_stop,
 879};
 880
 881/*
 882 *  ok.. exported functions..
 883 */
 884
 885static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 886                                         struct snd_pcm_hw_params *hw_params)
 887{
 888        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 889        unsigned char new_pdfr;
 890        int err;
 891
 892        err = snd_pcm_lib_malloc_pages(substream,
 893                                        params_buffer_bytes(hw_params));
 894        if (err < 0)
 895                return err;
 896        new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 897                                         params_channels(hw_params)) |
 898                snd_cs4231_get_rate(params_rate(hw_params));
 899        snd_cs4231_playback_format(chip, hw_params, new_pdfr);
 900
 901        return 0;
 902}
 903
 904static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 905{
 906        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 907        struct snd_pcm_runtime *runtime = substream->runtime;
 908        unsigned long flags;
 909
 910        spin_lock_irqsave(&chip->lock, flags);
 911
 912        chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 913                                            CS4231_PLAYBACK_PIO);
 914
 915        BUG_ON(runtime->period_size > 0xffff + 1);
 916
 917        chip->p_periods_sent = 0;
 918        spin_unlock_irqrestore(&chip->lock, flags);
 919
 920        return 0;
 921}
 922
 923static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 924                                        struct snd_pcm_hw_params *hw_params)
 925{
 926        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 927        unsigned char new_cdfr;
 928        int err;
 929
 930        err = snd_pcm_lib_malloc_pages(substream,
 931                                        params_buffer_bytes(hw_params));
 932        if (err < 0)
 933                return err;
 934        new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 935                                         params_channels(hw_params)) |
 936                snd_cs4231_get_rate(params_rate(hw_params));
 937        snd_cs4231_capture_format(chip, hw_params, new_cdfr);
 938
 939        return 0;
 940}
 941
 942static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 943{
 944        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 945        unsigned long flags;
 946
 947        spin_lock_irqsave(&chip->lock, flags);
 948        chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
 949                                            CS4231_RECORD_PIO);
 950
 951
 952        chip->c_periods_sent = 0;
 953        spin_unlock_irqrestore(&chip->lock, flags);
 954
 955        return 0;
 956}
 957
 958static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 959{
 960        unsigned long flags;
 961        unsigned char res;
 962
 963        spin_lock_irqsave(&chip->lock, flags);
 964        res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 965        spin_unlock_irqrestore(&chip->lock, flags);
 966
 967        /* detect overrange only above 0dB; may be user selectable? */
 968        if (res & (0x08 | 0x02))
 969                chip->capture_substream->runtime->overrange++;
 970}
 971
 972static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
 973{
 974        if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
 975                snd_pcm_period_elapsed(chip->playback_substream);
 976                snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
 977                                            &chip->p_periods_sent);
 978        }
 979}
 980
 981static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
 982{
 983        if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
 984                snd_pcm_period_elapsed(chip->capture_substream);
 985                snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
 986                                            &chip->c_periods_sent);
 987        }
 988}
 989
 990static snd_pcm_uframes_t snd_cs4231_playback_pointer(
 991                                        struct snd_pcm_substream *substream)
 992{
 993        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 994        struct cs4231_dma_control *dma_cont = &chip->p_dma;
 995        size_t ptr;
 996
 997        if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
 998                return 0;
 999        ptr = dma_cont->address(dma_cont);
1000        if (ptr != 0)
1001                ptr -= substream->runtime->dma_addr;
1002
1003        return bytes_to_frames(substream->runtime, ptr);
1004}
1005
1006static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1007                                        struct snd_pcm_substream *substream)
1008{
1009        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1010        struct cs4231_dma_control *dma_cont = &chip->c_dma;
1011        size_t ptr;
1012
1013        if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1014                return 0;
1015        ptr = dma_cont->address(dma_cont);
1016        if (ptr != 0)
1017                ptr -= substream->runtime->dma_addr;
1018
1019        return bytes_to_frames(substream->runtime, ptr);
1020}
1021
1022static int __devinit snd_cs4231_probe(struct snd_cs4231 *chip)
1023{
1024        unsigned long flags;
1025        int i;
1026        int id = 0;
1027        int vers = 0;
1028        unsigned char *ptr;
1029
1030        for (i = 0; i < 50; i++) {
1031                mb();
1032                if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1033                        msleep(2);
1034                else {
1035                        spin_lock_irqsave(&chip->lock, flags);
1036                        snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1037                        id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1038                        vers = snd_cs4231_in(chip, CS4231_VERSION);
1039                        spin_unlock_irqrestore(&chip->lock, flags);
1040                        if (id == 0x0a)
1041                                break;  /* this is valid value */
1042                }
1043        }
1044        snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1045        if (id != 0x0a)
1046                return -ENODEV; /* no valid device found */
1047
1048        spin_lock_irqsave(&chip->lock, flags);
1049
1050        /* clear any pendings IRQ */
1051        __cs4231_readb(chip, CS4231U(chip, STATUS));
1052        __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1053        mb();
1054
1055        spin_unlock_irqrestore(&chip->lock, flags);
1056
1057        chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1058        chip->image[CS4231_IFACE_CTRL] =
1059                chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1060        chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1061        chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1062        if (vers & 0x20)
1063                chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1064
1065        ptr = (unsigned char *) &chip->image;
1066
1067        snd_cs4231_mce_down(chip);
1068
1069        spin_lock_irqsave(&chip->lock, flags);
1070
1071        for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1072                snd_cs4231_out(chip, i, *ptr++);
1073
1074        spin_unlock_irqrestore(&chip->lock, flags);
1075
1076        snd_cs4231_mce_up(chip);
1077
1078        snd_cs4231_mce_down(chip);
1079
1080        mdelay(2);
1081
1082        return 0;               /* all things are ok.. */
1083}
1084
1085static struct snd_pcm_hardware snd_cs4231_playback = {
1086        .info                   = SNDRV_PCM_INFO_MMAP |
1087                                  SNDRV_PCM_INFO_INTERLEAVED |
1088                                  SNDRV_PCM_INFO_MMAP_VALID |
1089                                  SNDRV_PCM_INFO_SYNC_START,
1090        .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1091                                  SNDRV_PCM_FMTBIT_A_LAW |
1092                                  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1093                                  SNDRV_PCM_FMTBIT_U8 |
1094                                  SNDRV_PCM_FMTBIT_S16_LE |
1095                                  SNDRV_PCM_FMTBIT_S16_BE,
1096        .rates                  = SNDRV_PCM_RATE_KNOT |
1097                                  SNDRV_PCM_RATE_8000_48000,
1098        .rate_min               = 5510,
1099        .rate_max               = 48000,
1100        .channels_min           = 1,
1101        .channels_max           = 2,
1102        .buffer_bytes_max       = 32 * 1024,
1103        .period_bytes_min       = 64,
1104        .period_bytes_max       = 32 * 1024,
1105        .periods_min            = 1,
1106        .periods_max            = 1024,
1107};
1108
1109static struct snd_pcm_hardware snd_cs4231_capture = {
1110        .info                   = SNDRV_PCM_INFO_MMAP |
1111                                  SNDRV_PCM_INFO_INTERLEAVED |
1112                                  SNDRV_PCM_INFO_MMAP_VALID |
1113                                  SNDRV_PCM_INFO_SYNC_START,
1114        .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1115                                  SNDRV_PCM_FMTBIT_A_LAW |
1116                                  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1117                                  SNDRV_PCM_FMTBIT_U8 |
1118                                  SNDRV_PCM_FMTBIT_S16_LE |
1119                                  SNDRV_PCM_FMTBIT_S16_BE,
1120        .rates                  = SNDRV_PCM_RATE_KNOT |
1121                                  SNDRV_PCM_RATE_8000_48000,
1122        .rate_min               = 5510,
1123        .rate_max               = 48000,
1124        .channels_min           = 1,
1125        .channels_max           = 2,
1126        .buffer_bytes_max       = 32 * 1024,
1127        .period_bytes_min       = 64,
1128        .period_bytes_max       = 32 * 1024,
1129        .periods_min            = 1,
1130        .periods_max            = 1024,
1131};
1132
1133static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1134{
1135        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1136        struct snd_pcm_runtime *runtime = substream->runtime;
1137        int err;
1138
1139        runtime->hw = snd_cs4231_playback;
1140
1141        err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1142        if (err < 0) {
1143                snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1144                return err;
1145        }
1146        chip->playback_substream = substream;
1147        chip->p_periods_sent = 0;
1148        snd_pcm_set_sync(substream);
1149        snd_cs4231_xrate(runtime);
1150
1151        return 0;
1152}
1153
1154static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1155{
1156        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1157        struct snd_pcm_runtime *runtime = substream->runtime;
1158        int err;
1159
1160        runtime->hw = snd_cs4231_capture;
1161
1162        err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1163        if (err < 0) {
1164                snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1165                return err;
1166        }
1167        chip->capture_substream = substream;
1168        chip->c_periods_sent = 0;
1169        snd_pcm_set_sync(substream);
1170        snd_cs4231_xrate(runtime);
1171
1172        return 0;
1173}
1174
1175static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1176{
1177        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1178
1179        snd_cs4231_close(chip, CS4231_MODE_PLAY);
1180        chip->playback_substream = NULL;
1181
1182        return 0;
1183}
1184
1185static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1186{
1187        struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1188
1189        snd_cs4231_close(chip, CS4231_MODE_RECORD);
1190        chip->capture_substream = NULL;
1191
1192        return 0;
1193}
1194
1195/* XXX We can do some power-management, in particular on EBUS using
1196 * XXX the audio AUXIO register...
1197 */
1198
1199static struct snd_pcm_ops snd_cs4231_playback_ops = {
1200        .open           =       snd_cs4231_playback_open,
1201        .close          =       snd_cs4231_playback_close,
1202        .ioctl          =       snd_pcm_lib_ioctl,
1203        .hw_params      =       snd_cs4231_playback_hw_params,
1204        .hw_free        =       snd_pcm_lib_free_pages,
1205        .prepare        =       snd_cs4231_playback_prepare,
1206        .trigger        =       snd_cs4231_trigger,
1207        .pointer        =       snd_cs4231_playback_pointer,
1208};
1209
1210static struct snd_pcm_ops snd_cs4231_capture_ops = {
1211        .open           =       snd_cs4231_capture_open,
1212        .close          =       snd_cs4231_capture_close,
1213        .ioctl          =       snd_pcm_lib_ioctl,
1214        .hw_params      =       snd_cs4231_capture_hw_params,
1215        .hw_free        =       snd_pcm_lib_free_pages,
1216        .prepare        =       snd_cs4231_capture_prepare,
1217        .trigger        =       snd_cs4231_trigger,
1218        .pointer        =       snd_cs4231_capture_pointer,
1219};
1220
1221static int __devinit snd_cs4231_pcm(struct snd_card *card)
1222{
1223        struct snd_cs4231 *chip = card->private_data;
1224        struct snd_pcm *pcm;
1225        int err;
1226
1227        err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1228        if (err < 0)
1229                return err;
1230
1231        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1232                        &snd_cs4231_playback_ops);
1233        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1234                        &snd_cs4231_capture_ops);
1235
1236        /* global setup */
1237        pcm->private_data = chip;
1238        pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1239        strcpy(pcm->name, "CS4231");
1240
1241        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1242                                              &chip->op->dev,
1243                                              64 * 1024, 128 * 1024);
1244
1245        chip->pcm = pcm;
1246
1247        return 0;
1248}
1249
1250static int __devinit snd_cs4231_timer(struct snd_card *card)
1251{
1252        struct snd_cs4231 *chip = card->private_data;
1253        struct snd_timer *timer;
1254        struct snd_timer_id tid;
1255        int err;
1256
1257        /* Timer initialization */
1258        tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1259        tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1260        tid.card = card->number;
1261        tid.device = 0;
1262        tid.subdevice = 0;
1263        err = snd_timer_new(card, "CS4231", &tid, &timer);
1264        if (err < 0)
1265                return err;
1266        strcpy(timer->name, "CS4231");
1267        timer->private_data = chip;
1268        timer->hw = snd_cs4231_timer_table;
1269        chip->timer = timer;
1270
1271        return 0;
1272}
1273
1274/*
1275 *  MIXER part
1276 */
1277
1278static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1279                               struct snd_ctl_elem_info *uinfo)
1280{
1281        static char *texts[4] = {
1282                "Line", "CD", "Mic", "Mix"
1283        };
1284
1285        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1286        uinfo->count = 2;
1287        uinfo->value.enumerated.items = 4;
1288        if (uinfo->value.enumerated.item > 3)
1289                uinfo->value.enumerated.item = 3;
1290        strcpy(uinfo->value.enumerated.name,
1291                texts[uinfo->value.enumerated.item]);
1292
1293        return 0;
1294}
1295
1296static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1297                              struct snd_ctl_elem_value *ucontrol)
1298{
1299        struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1300        unsigned long flags;
1301
1302        spin_lock_irqsave(&chip->lock, flags);
1303        ucontrol->value.enumerated.item[0] =
1304                (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1305        ucontrol->value.enumerated.item[1] =
1306                (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1307        spin_unlock_irqrestore(&chip->lock, flags);
1308
1309        return 0;
1310}
1311
1312static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1313                              struct snd_ctl_elem_value *ucontrol)
1314{
1315        struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1316        unsigned long flags;
1317        unsigned short left, right;
1318        int change;
1319
1320        if (ucontrol->value.enumerated.item[0] > 3 ||
1321            ucontrol->value.enumerated.item[1] > 3)
1322                return -EINVAL;
1323        left = ucontrol->value.enumerated.item[0] << 6;
1324        right = ucontrol->value.enumerated.item[1] << 6;
1325
1326        spin_lock_irqsave(&chip->lock, flags);
1327
1328        left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1329        right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1330        change = left != chip->image[CS4231_LEFT_INPUT] ||
1331                 right != chip->image[CS4231_RIGHT_INPUT];
1332        snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1333        snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1334
1335        spin_unlock_irqrestore(&chip->lock, flags);
1336
1337        return change;
1338}
1339
1340static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1341                                  struct snd_ctl_elem_info *uinfo)
1342{
1343        int mask = (kcontrol->private_value >> 16) & 0xff;
1344
1345        uinfo->type = (mask == 1) ?
1346                SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1347        uinfo->count = 1;
1348        uinfo->value.integer.min = 0;
1349        uinfo->value.integer.max = mask;
1350
1351        return 0;
1352}
1353
1354static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1355                                 struct snd_ctl_elem_value *ucontrol)
1356{
1357        struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1358        unsigned long flags;
1359        int reg = kcontrol->private_value & 0xff;
1360        int shift = (kcontrol->private_value >> 8) & 0xff;
1361        int mask = (kcontrol->private_value >> 16) & 0xff;
1362        int invert = (kcontrol->private_value >> 24) & 0xff;
1363
1364        spin_lock_irqsave(&chip->lock, flags);
1365
1366        ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1367
1368        spin_unlock_irqrestore(&chip->lock, flags);
1369
1370        if (invert)
1371                ucontrol->value.integer.value[0] =
1372                        (mask - ucontrol->value.integer.value[0]);
1373
1374        return 0;
1375}
1376
1377static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1378                                 struct snd_ctl_elem_value *ucontrol)
1379{
1380        struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1381        unsigned long flags;
1382        int reg = kcontrol->private_value & 0xff;
1383        int shift = (kcontrol->private_value >> 8) & 0xff;
1384        int mask = (kcontrol->private_value >> 16) & 0xff;
1385        int invert = (kcontrol->private_value >> 24) & 0xff;
1386        int change;
1387        unsigned short val;
1388
1389        val = (ucontrol->value.integer.value[0] & mask);
1390        if (invert)
1391                val = mask - val;
1392        val <<= shift;
1393
1394        spin_lock_irqsave(&chip->lock, flags);
1395
1396        val = (chip->image[reg] & ~(mask << shift)) | val;
1397        change = val != chip->image[reg];
1398        snd_cs4231_out(chip, reg, val);
1399
1400        spin_unlock_irqrestore(&chip->lock, flags);
1401
1402        return change;
1403}
1404
1405static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1406                                  struct snd_ctl_elem_info *uinfo)
1407{
1408        int mask = (kcontrol->private_value >> 24) & 0xff;
1409
1410        uinfo->type = mask == 1 ?
1411                SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1412        uinfo->count = 2;
1413        uinfo->value.integer.min = 0;
1414        uinfo->value.integer.max = mask;
1415
1416        return 0;
1417}
1418
1419static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1420                                 struct snd_ctl_elem_value *ucontrol)
1421{
1422        struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1423        unsigned long flags;
1424        int left_reg = kcontrol->private_value & 0xff;
1425        int right_reg = (kcontrol->private_value >> 8) & 0xff;
1426        int shift_left = (kcontrol->private_value >> 16) & 0x07;
1427        int shift_right = (kcontrol->private_value >> 19) & 0x07;
1428        int mask = (kcontrol->private_value >> 24) & 0xff;
1429        int invert = (kcontrol->private_value >> 22) & 1;
1430
1431        spin_lock_irqsave(&chip->lock, flags);
1432
1433        ucontrol->value.integer.value[0] =
1434                (chip->image[left_reg] >> shift_left) & mask;
1435        ucontrol->value.integer.value[1] =
1436                (chip->image[right_reg] >> shift_right) & mask;
1437
1438        spin_unlock_irqrestore(&chip->lock, flags);
1439
1440        if (invert) {
1441                ucontrol->value.integer.value[0] =
1442                        (mask - ucontrol->value.integer.value[0]);
1443                ucontrol->value.integer.value[1] =
1444                        (mask - ucontrol->value.integer.value[1]);
1445        }
1446
1447        return 0;
1448}
1449
1450static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1451                                 struct snd_ctl_elem_value *ucontrol)
1452{
1453        struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1454        unsigned long flags;
1455        int left_reg = kcontrol->private_value & 0xff;
1456        int right_reg = (kcontrol->private_value >> 8) & 0xff;
1457        int shift_left = (kcontrol->private_value >> 16) & 0x07;
1458        int shift_right = (kcontrol->private_value >> 19) & 0x07;
1459        int mask = (kcontrol->private_value >> 24) & 0xff;
1460        int invert = (kcontrol->private_value >> 22) & 1;
1461        int change;
1462        unsigned short val1, val2;
1463
1464        val1 = ucontrol->value.integer.value[0] & mask;
1465        val2 = ucontrol->value.integer.value[1] & mask;
1466        if (invert) {
1467                val1 = mask - val1;
1468                val2 = mask - val2;
1469        }
1470        val1 <<= shift_left;
1471        val2 <<= shift_right;
1472
1473        spin_lock_irqsave(&chip->lock, flags);
1474
1475        val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1476        val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1477        change = val1 != chip->image[left_reg];
1478        change |= val2 != chip->image[right_reg];
1479        snd_cs4231_out(chip, left_reg, val1);
1480        snd_cs4231_out(chip, right_reg, val2);
1481
1482        spin_unlock_irqrestore(&chip->lock, flags);
1483
1484        return change;
1485}
1486
1487#define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1488{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1489  .info = snd_cs4231_info_single,       \
1490  .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1491  .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1492
1493#define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1494                        shift_right, mask, invert) \
1495{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1496  .info = snd_cs4231_info_double,       \
1497  .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1498  .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1499                   ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1500
1501static struct snd_kcontrol_new snd_cs4231_controls[] __devinitdata = {
1502CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1503                CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1504CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1505                CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1506CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1507                CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1508CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1509                CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1510CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1511                CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1512CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1513                CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1514CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1515                CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1516CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1517                CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1518CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1519CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1520CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1521CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1522CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1523                15, 0),
1524{
1525        .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1526        .name   = "Capture Source",
1527        .info   = snd_cs4231_info_mux,
1528        .get    = snd_cs4231_get_mux,
1529        .put    = snd_cs4231_put_mux,
1530},
1531CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1532                1, 0),
1533CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1534CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1535/* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1536CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1537CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1538};
1539
1540static int __devinit snd_cs4231_mixer(struct snd_card *card)
1541{
1542        struct snd_cs4231 *chip = card->private_data;
1543        int err, idx;
1544
1545        if (snd_BUG_ON(!chip || !chip->pcm))
1546                return -EINVAL;
1547
1548        strcpy(card->mixername, chip->pcm->name);
1549
1550        for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1551                err = snd_ctl_add(card,
1552                                 snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1553                if (err < 0)
1554                        return err;
1555        }
1556        return 0;
1557}
1558
1559static int dev;
1560
1561static int __devinit cs4231_attach_begin(struct snd_card **rcard)
1562{
1563        struct snd_card *card;
1564        struct snd_cs4231 *chip;
1565        int err;
1566
1567        *rcard = NULL;
1568
1569        if (dev >= SNDRV_CARDS)
1570                return -ENODEV;
1571
1572        if (!enable[dev]) {
1573                dev++;
1574                return -ENOENT;
1575        }
1576
1577        err = snd_card_create(index[dev], id[dev], THIS_MODULE,
1578                              sizeof(struct snd_cs4231), &card);
1579        if (err < 0)
1580                return err;
1581
1582        strcpy(card->driver, "CS4231");
1583        strcpy(card->shortname, "Sun CS4231");
1584
1585        chip = card->private_data;
1586        chip->card = card;
1587
1588        *rcard = card;
1589        return 0;
1590}
1591
1592static int __devinit cs4231_attach_finish(struct snd_card *card)
1593{
1594        struct snd_cs4231 *chip = card->private_data;
1595        int err;
1596
1597        err = snd_cs4231_pcm(card);
1598        if (err < 0)
1599                goto out_err;
1600
1601        err = snd_cs4231_mixer(card);
1602        if (err < 0)
1603                goto out_err;
1604
1605        err = snd_cs4231_timer(card);
1606        if (err < 0)
1607                goto out_err;
1608
1609        err = snd_card_register(card);
1610        if (err < 0)
1611                goto out_err;
1612
1613        dev_set_drvdata(&chip->op->dev, chip);
1614
1615        dev++;
1616        return 0;
1617
1618out_err:
1619        snd_card_free(card);
1620        return err;
1621}
1622
1623#ifdef SBUS_SUPPORT
1624
1625static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1626{
1627        unsigned long flags;
1628        unsigned char status;
1629        u32 csr;
1630        struct snd_cs4231 *chip = dev_id;
1631
1632        /*This is IRQ is not raised by the cs4231*/
1633        if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1634                return IRQ_NONE;
1635
1636        /* ACK the APC interrupt. */
1637        csr = sbus_readl(chip->port + APCCSR);
1638
1639        sbus_writel(csr, chip->port + APCCSR);
1640
1641        if ((csr & APC_PDMA_READY) &&
1642            (csr & APC_PLAY_INT) &&
1643            (csr & APC_XINT_PNVA) &&
1644            !(csr & APC_XINT_EMPT))
1645                        snd_cs4231_play_callback(chip);
1646
1647        if ((csr & APC_CDMA_READY) &&
1648            (csr & APC_CAPT_INT) &&
1649            (csr & APC_XINT_CNVA) &&
1650            !(csr & APC_XINT_EMPT))
1651                        snd_cs4231_capture_callback(chip);
1652
1653        status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1654
1655        if (status & CS4231_TIMER_IRQ) {
1656                if (chip->timer)
1657                        snd_timer_interrupt(chip->timer, chip->timer->sticks);
1658        }
1659
1660        if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1661                snd_cs4231_overrange(chip);
1662
1663        /* ACK the CS4231 interrupt. */
1664        spin_lock_irqsave(&chip->lock, flags);
1665        snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1666        spin_unlock_irqrestore(&chip->lock, flags);
1667
1668        return IRQ_HANDLED;
1669}
1670
1671/*
1672 * SBUS DMA routines
1673 */
1674
1675static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1676                            dma_addr_t bus_addr, size_t len)
1677{
1678        unsigned long flags;
1679        u32 test, csr;
1680        int err;
1681        struct sbus_dma_info *base = &dma_cont->sbus_info;
1682
1683        if (len >= (1 << 24))
1684                return -EINVAL;
1685        spin_lock_irqsave(&base->lock, flags);
1686        csr = sbus_readl(base->regs + APCCSR);
1687        err = -EINVAL;
1688        test = APC_CDMA_READY;
1689        if (base->dir == APC_PLAY)
1690                test = APC_PDMA_READY;
1691        if (!(csr & test))
1692                goto out;
1693        err = -EBUSY;
1694        test = APC_XINT_CNVA;
1695        if (base->dir == APC_PLAY)
1696                test = APC_XINT_PNVA;
1697        if (!(csr & test))
1698                goto out;
1699        err = 0;
1700        sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1701        sbus_writel(len, base->regs + base->dir + APCNC);
1702out:
1703        spin_unlock_irqrestore(&base->lock, flags);
1704        return err;
1705}
1706
1707static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1708{
1709        unsigned long flags;
1710        u32 csr, test;
1711        struct sbus_dma_info *base = &dma_cont->sbus_info;
1712
1713        spin_lock_irqsave(&base->lock, flags);
1714        csr = sbus_readl(base->regs + APCCSR);
1715        test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1716                APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1717                 APC_XINT_PENA;
1718        if (base->dir == APC_RECORD)
1719                test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1720                        APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1721        csr |= test;
1722        sbus_writel(csr, base->regs + APCCSR);
1723        spin_unlock_irqrestore(&base->lock, flags);
1724}
1725
1726static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1727{
1728        unsigned long flags;
1729        u32 csr, shift;
1730        struct sbus_dma_info *base = &dma_cont->sbus_info;
1731
1732        spin_lock_irqsave(&base->lock, flags);
1733        if (!on) {
1734                sbus_writel(0, base->regs + base->dir + APCNC);
1735                sbus_writel(0, base->regs + base->dir + APCNVA);
1736                if (base->dir == APC_PLAY) {
1737                        sbus_writel(0, base->regs + base->dir + APCC);
1738                        sbus_writel(0, base->regs + base->dir + APCVA);
1739                }
1740
1741                udelay(1200);
1742        }
1743        csr = sbus_readl(base->regs + APCCSR);
1744        shift = 0;
1745        if (base->dir == APC_PLAY)
1746                shift = 1;
1747        if (on)
1748                csr &= ~(APC_CPAUSE << shift);
1749        else
1750                csr |= (APC_CPAUSE << shift);
1751        sbus_writel(csr, base->regs + APCCSR);
1752        if (on)
1753                csr |= (APC_CDMA_READY << shift);
1754        else
1755                csr &= ~(APC_CDMA_READY << shift);
1756        sbus_writel(csr, base->regs + APCCSR);
1757
1758        spin_unlock_irqrestore(&base->lock, flags);
1759}
1760
1761static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1762{
1763        struct sbus_dma_info *base = &dma_cont->sbus_info;
1764
1765        return sbus_readl(base->regs + base->dir + APCVA);
1766}
1767
1768/*
1769 * Init and exit routines
1770 */
1771
1772static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1773{
1774        struct platform_device *op = chip->op;
1775
1776        if (chip->irq[0])
1777                free_irq(chip->irq[0], chip);
1778
1779        if (chip->port)
1780                of_iounmap(&op->resource[0], chip->port, chip->regs_size);
1781
1782        return 0;
1783}
1784
1785static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1786{
1787        struct snd_cs4231 *cp = device->device_data;
1788
1789        return snd_cs4231_sbus_free(cp);
1790}
1791
1792static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1793        .dev_free       =       snd_cs4231_sbus_dev_free,
1794};
1795
1796static int __devinit snd_cs4231_sbus_create(struct snd_card *card,
1797                                            struct platform_device *op,
1798                                            int dev)
1799{
1800        struct snd_cs4231 *chip = card->private_data;
1801        int err;
1802
1803        spin_lock_init(&chip->lock);
1804        spin_lock_init(&chip->c_dma.sbus_info.lock);
1805        spin_lock_init(&chip->p_dma.sbus_info.lock);
1806        mutex_init(&chip->mce_mutex);
1807        mutex_init(&chip->open_mutex);
1808        chip->op = op;
1809        chip->regs_size = resource_size(&op->resource[0]);
1810        memcpy(&chip->image, &snd_cs4231_original_image,
1811               sizeof(snd_cs4231_original_image));
1812
1813        chip->port = of_ioremap(&op->resource[0], 0,
1814                                chip->regs_size, "cs4231");
1815        if (!chip->port) {
1816                snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1817                return -EIO;
1818        }
1819
1820        chip->c_dma.sbus_info.regs = chip->port;
1821        chip->p_dma.sbus_info.regs = chip->port;
1822        chip->c_dma.sbus_info.dir = APC_RECORD;
1823        chip->p_dma.sbus_info.dir = APC_PLAY;
1824
1825        chip->p_dma.prepare = sbus_dma_prepare;
1826        chip->p_dma.enable = sbus_dma_enable;
1827        chip->p_dma.request = sbus_dma_request;
1828        chip->p_dma.address = sbus_dma_addr;
1829
1830        chip->c_dma.prepare = sbus_dma_prepare;
1831        chip->c_dma.enable = sbus_dma_enable;
1832        chip->c_dma.request = sbus_dma_request;
1833        chip->c_dma.address = sbus_dma_addr;
1834
1835        if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
1836                        IRQF_SHARED, "cs4231", chip)) {
1837                snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1838                            dev, op->archdata.irqs[0]);
1839                snd_cs4231_sbus_free(chip);
1840                return -EBUSY;
1841        }
1842        chip->irq[0] = op->archdata.irqs[0];
1843
1844        if (snd_cs4231_probe(chip) < 0) {
1845                snd_cs4231_sbus_free(chip);
1846                return -ENODEV;
1847        }
1848        snd_cs4231_init(chip);
1849
1850        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1851                                  chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1852                snd_cs4231_sbus_free(chip);
1853                return err;
1854        }
1855
1856        return 0;
1857}
1858
1859static int __devinit cs4231_sbus_probe(struct platform_device *op)
1860{
1861        struct resource *rp = &op->resource[0];
1862        struct snd_card *card;
1863        int err;
1864
1865        err = cs4231_attach_begin(&card);
1866        if (err)
1867                return err;
1868
1869        sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1870                card->shortname,
1871                rp->flags & 0xffL,
1872                (unsigned long long)rp->start,
1873                op->archdata.irqs[0]);
1874
1875        err = snd_cs4231_sbus_create(card, op, dev);
1876        if (err < 0) {
1877                snd_card_free(card);
1878                return err;
1879        }
1880
1881        return cs4231_attach_finish(card);
1882}
1883#endif
1884
1885#ifdef EBUS_SUPPORT
1886
1887static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1888                                          void *cookie)
1889{
1890        struct snd_cs4231 *chip = cookie;
1891
1892        snd_cs4231_play_callback(chip);
1893}
1894
1895static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1896                                             int event, void *cookie)
1897{
1898        struct snd_cs4231 *chip = cookie;
1899
1900        snd_cs4231_capture_callback(chip);
1901}
1902
1903/*
1904 * EBUS DMA wrappers
1905 */
1906
1907static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1908                             dma_addr_t bus_addr, size_t len)
1909{
1910        return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1911}
1912
1913static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1914{
1915        ebus_dma_enable(&dma_cont->ebus_info, on);
1916}
1917
1918static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1919{
1920        ebus_dma_prepare(&dma_cont->ebus_info, dir);
1921}
1922
1923static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1924{
1925        return ebus_dma_addr(&dma_cont->ebus_info);
1926}
1927
1928/*
1929 * Init and exit routines
1930 */
1931
1932static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1933{
1934        struct platform_device *op = chip->op;
1935
1936        if (chip->c_dma.ebus_info.regs) {
1937                ebus_dma_unregister(&chip->c_dma.ebus_info);
1938                of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
1939        }
1940        if (chip->p_dma.ebus_info.regs) {
1941                ebus_dma_unregister(&chip->p_dma.ebus_info);
1942                of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
1943        }
1944
1945        if (chip->port)
1946                of_iounmap(&op->resource[0], chip->port, 0x10);
1947
1948        return 0;
1949}
1950
1951static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1952{
1953        struct snd_cs4231 *cp = device->device_data;
1954
1955        return snd_cs4231_ebus_free(cp);
1956}
1957
1958static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1959        .dev_free       =       snd_cs4231_ebus_dev_free,
1960};
1961
1962static int __devinit snd_cs4231_ebus_create(struct snd_card *card,
1963                                            struct platform_device *op,
1964                                            int dev)
1965{
1966        struct snd_cs4231 *chip = card->private_data;
1967        int err;
1968
1969        spin_lock_init(&chip->lock);
1970        spin_lock_init(&chip->c_dma.ebus_info.lock);
1971        spin_lock_init(&chip->p_dma.ebus_info.lock);
1972        mutex_init(&chip->mce_mutex);
1973        mutex_init(&chip->open_mutex);
1974        chip->flags |= CS4231_FLAG_EBUS;
1975        chip->op = op;
1976        memcpy(&chip->image, &snd_cs4231_original_image,
1977               sizeof(snd_cs4231_original_image));
1978        strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
1979        chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1980        chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
1981        chip->c_dma.ebus_info.client_cookie = chip;
1982        chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
1983        strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
1984        chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1985        chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
1986        chip->p_dma.ebus_info.client_cookie = chip;
1987        chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
1988
1989        chip->p_dma.prepare = _ebus_dma_prepare;
1990        chip->p_dma.enable = _ebus_dma_enable;
1991        chip->p_dma.request = _ebus_dma_request;
1992        chip->p_dma.address = _ebus_dma_addr;
1993
1994        chip->c_dma.prepare = _ebus_dma_prepare;
1995        chip->c_dma.enable = _ebus_dma_enable;
1996        chip->c_dma.request = _ebus_dma_request;
1997        chip->c_dma.address = _ebus_dma_addr;
1998
1999        chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
2000        chip->p_dma.ebus_info.regs =
2001                of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
2002        chip->c_dma.ebus_info.regs =
2003                of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
2004        if (!chip->port || !chip->p_dma.ebus_info.regs ||
2005            !chip->c_dma.ebus_info.regs) {
2006                snd_cs4231_ebus_free(chip);
2007                snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2008                return -EIO;
2009        }
2010
2011        if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2012                snd_cs4231_ebus_free(chip);
2013                snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
2014                            dev);
2015                return -EBUSY;
2016        }
2017        if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2018                snd_cs4231_ebus_free(chip);
2019                snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2020                            dev);
2021                return -EBUSY;
2022        }
2023
2024        if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2025                snd_cs4231_ebus_free(chip);
2026                snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2027                            dev);
2028                return -EBUSY;
2029        }
2030        if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2031                snd_cs4231_ebus_free(chip);
2032                snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2033                return -EBUSY;
2034        }
2035
2036        if (snd_cs4231_probe(chip) < 0) {
2037                snd_cs4231_ebus_free(chip);
2038                return -ENODEV;
2039        }
2040        snd_cs4231_init(chip);
2041
2042        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2043                                  chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2044                snd_cs4231_ebus_free(chip);
2045                return err;
2046        }
2047
2048        return 0;
2049}
2050
2051static int __devinit cs4231_ebus_probe(struct platform_device *op)
2052{
2053        struct snd_card *card;
2054        int err;
2055
2056        err = cs4231_attach_begin(&card);
2057        if (err)
2058                return err;
2059
2060        sprintf(card->longname, "%s at 0x%llx, irq %d",
2061                card->shortname,
2062                op->resource[0].start,
2063                op->archdata.irqs[0]);
2064
2065        err = snd_cs4231_ebus_create(card, op, dev);
2066        if (err < 0) {
2067                snd_card_free(card);
2068                return err;
2069        }
2070
2071        return cs4231_attach_finish(card);
2072}
2073#endif
2074
2075static int __devinit cs4231_probe(struct platform_device *op)
2076{
2077#ifdef EBUS_SUPPORT
2078        if (!strcmp(op->dev.of_node->parent->name, "ebus"))
2079                return cs4231_ebus_probe(op);
2080#endif
2081#ifdef SBUS_SUPPORT
2082        if (!strcmp(op->dev.of_node->parent->name, "sbus") ||
2083            !strcmp(op->dev.of_node->parent->name, "sbi"))
2084                return cs4231_sbus_probe(op);
2085#endif
2086        return -ENODEV;
2087}
2088
2089static int __devexit cs4231_remove(struct platform_device *op)
2090{
2091        struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
2092
2093        snd_card_free(chip->card);
2094
2095        return 0;
2096}
2097
2098static const struct of_device_id cs4231_match[] = {
2099        {
2100                .name = "SUNW,CS4231",
2101        },
2102        {
2103                .name = "audio",
2104                .compatible = "SUNW,CS4231",
2105        },
2106        {},
2107};
2108
2109MODULE_DEVICE_TABLE(of, cs4231_match);
2110
2111static struct platform_driver cs4231_driver = {
2112        .driver = {
2113                .name = "audio",
2114                .owner = THIS_MODULE,
2115                .of_match_table = cs4231_match,
2116        },
2117        .probe          = cs4231_probe,
2118        .remove         = __devexit_p(cs4231_remove),
2119};
2120
2121module_platform_driver(cs4231_driver);
2122
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