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
  56 #ifdef SBUS_SUPPORT
  57 struct sbus_dma_info {
  58        spinlock_t       lock;   /* DMA access lock */
  59        int              dir;
  60        void __iomem     *regs;
  61 };
  62 #endif
  63
  64 struct snd_cs4231;
  65 struct cs4231_dma_control {
  66         void            (*prepare)(struct cs4231_dma_control *dma_cont,
  67                                    int dir);
  68         void            (*enable)(struct cs4231_dma_control *dma_cont, int on);
  69         int             (*request)(struct cs4231_dma_control *dma_cont,
  70                                    dma_addr_t bus_addr, size_t len);
  71         unsigned int    (*address)(struct cs4231_dma_control *dma_cont);
  72 #ifdef EBUS_SUPPORT
  73         struct          ebus_dma_info   ebus_info;
  74 #endif
  75 #ifdef SBUS_SUPPORT
  76         struct          sbus_dma_info   sbus_info;
  77 #endif
  78 };
  79
  80 struct snd_cs4231 {
  81         spinlock_t              lock;   /* registers access lock */
  82         void __iomem            *port;
  83
  84         struct cs4231_dma_control       p_dma;
  85         struct cs4231_dma_control       c_dma;
  86
  87         u32                     flags;
  88 #define CS4231_FLAG_EBUS        0x00000001
  89 #define CS4231_FLAG_PLAYBACK    0x00000002
  90 #define CS4231_FLAG_CAPTURE     0x00000004
  91
  92         struct snd_card         *card;
  93         struct snd_pcm          *pcm;
  94         struct snd_pcm_substream        *playback_substream;
  95         unsigned int            p_periods_sent;
  96         struct snd_pcm_substream        *capture_substream;
  97         unsigned int            c_periods_sent;
  98         struct snd_timer        *timer;
  99
 100         unsigned short mode;
 101 #define CS4231_MODE_NONE        0x0000
 102 #define CS4231_MODE_PLAY        0x0001
 103 #define CS4231_MODE_RECORD      0x0002
 104 #define CS4231_MODE_TIMER       0x0004
 105 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
 106                                  CS4231_MODE_TIMER)
 107
 108         unsigned char           image[32];      /* registers image */
 109         int                     mce_bit;
 110         int                     calibrate_mute;
 111         struct mutex            mce_mutex;      /* mutex for mce register */
 112         struct mutex            open_mutex;     /* mutex for ALSA open/close */
 113
 114         struct platform_device  *op;
 115         unsigned int            irq[2];
 116         unsigned int            regs_size;
 117         struct snd_cs4231       *next;
 118 };
 119
 120 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
 121  * now....  -DaveM
 122  */
 123
 124 /* IO ports */
 125 #include <sound/cs4231-regs.h>
 126
 127 /* XXX offsets are different than PC ISA chips... */
 128 #define CS4231U(chip, x)        ((chip)->port + ((c_d_c_CS4231##x) << 2))
 129
 130 /* SBUS DMA register defines.  */
 131
 132 #define APCCSR  0x10UL  /* APC DMA CSR */
 133 #define APCCVA  0x20UL  /* APC Capture DMA Address */
 134 #define APCCC   0x24UL  /* APC Capture Count */
 135 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
 136 #define APCCNC  0x2cUL  /* APC Capture Next Count */
 137 #define APCPVA  0x30UL  /* APC Play DMA Address */
 138 #define APCPC   0x34UL  /* APC Play Count */
 139 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
 140 #define APCPNC  0x3cUL  /* APC Play Next Count */
 141
 142 /* Defines for SBUS DMA-routines */
 143
 144 #define APCVA  0x0UL    /* APC DMA Address */
 145 #define APCC   0x4UL    /* APC Count */
 146 #define APCNVA 0x8UL    /* APC DMA Next Address */
 147 #define APCNC  0xcUL    /* APC Next Count */
 148 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
 149 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
 150
 151 /* APCCSR bits */
 152
 153 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
 154 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
 155 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
 156 #define APC_GENL_INT    0x100000 /* General interrupt */
 157 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
 158 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
 159 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
 160 #define APC_XINT_GENL   0x10000  /* Error ext intr */
 161 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
 162 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
 163 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
 164 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
 165 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
 166 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
 167 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
 168 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
 169 #define APC_PPAUSE      0x80     /* Pause the play DMA */
 170 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
 171 #define APC_CDC_RESET   0x20     /* CODEC RESET */
 172 #define APC_PDMA_READY  0x08     /* Play DMA Go */
 173 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
 174 #define APC_CHIP_RESET  0x01     /* Reset the chip */
 175
 176 /* EBUS DMA register offsets  */
 177
 178 #define EBDMA_CSR       0x00UL  /* Control/Status */
 179 #define EBDMA_ADDR      0x04UL  /* DMA Address */
 180 #define EBDMA_COUNT     0x08UL  /* DMA Count */
 181
 182 /*
 183  *  Some variables
 184  */
 185
 186 static const unsigned char freq_bits[14] = {
 187         /* 5510 */      0x00 | CS4231_XTAL2,
 188         /* 6620 */      0x0E | CS4231_XTAL2,
 189         /* 8000 */      0x00 | CS4231_XTAL1,
 190         /* 9600 */      0x0E | CS4231_XTAL1,
 191         /* 11025 */     0x02 | CS4231_XTAL2,
 192         /* 16000 */     0x02 | CS4231_XTAL1,
 193         /* 18900 */     0x04 | CS4231_XTAL2,
 194         /* 22050 */     0x06 | CS4231_XTAL2,
 195         /* 27042 */     0x04 | CS4231_XTAL1,
 196         /* 32000 */     0x06 | CS4231_XTAL1,
 197         /* 33075 */     0x0C | CS4231_XTAL2,
 198         /* 37800 */     0x08 | CS4231_XTAL2,
 199         /* 44100 */     0x0A | CS4231_XTAL2,
 200         /* 48000 */     0x0C | CS4231_XTAL1
 201 };
 202
 203 static const unsigned int rates[14] = {
 204         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
 205         27042, 32000, 33075, 37800, 44100, 48000
 206 };
 207
 208 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 209         .count  = ARRAY_SIZE(rates),
 210         .list   = rates,
 211 };
 212
 213 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
 214 {
 215         return snd_pcm_hw_constraint_list(runtime, 0,
 216                                           SNDRV_PCM_HW_PARAM_RATE,
 217                                           &hw_constraints_rates);
 218 }
 219
 220 static const unsigned char snd_cs4231_original_image[32] =
 221 {
 222         0x00,                   /* 00/00 - lic */
 223         0x00,                   /* 01/01 - ric */
 224         0x9f,                   /* 02/02 - la1ic */
 225         0x9f,                   /* 03/03 - ra1ic */
 226         0x9f,                   /* 04/04 - la2ic */
 227         0x9f,                   /* 05/05 - ra2ic */
 228         0xbf,                   /* 06/06 - loc */
 229         0xbf,                   /* 07/07 - roc */
 230         0x20,                   /* 08/08 - pdfr */
 231         CS4231_AUTOCALIB,       /* 09/09 - ic */
 232         0x00,                   /* 0a/10 - pc */
 233         0x00,                   /* 0b/11 - ti */
 234         CS4231_MODE2,           /* 0c/12 - mi */
 235         0x00,                   /* 0d/13 - lbc */
 236         0x00,                   /* 0e/14 - pbru */
 237         0x00,                   /* 0f/15 - pbrl */
 238         0x80,                   /* 10/16 - afei */
 239         0x01,                   /* 11/17 - afeii */
 240         0x9f,                   /* 12/18 - llic */
 241         0x9f,                   /* 13/19 - rlic */
 242         0x00,                   /* 14/20 - tlb */
 243         0x00,                   /* 15/21 - thb */
 244         0x00,                   /* 16/22 - la3mic/reserved */
 245         0x00,                   /* 17/23 - ra3mic/reserved */
 246         0x00,                   /* 18/24 - afs */
 247         0x00,                   /* 19/25 - lamoc/version */
 248         0x00,                   /* 1a/26 - mioc */
 249         0x00,                   /* 1b/27 - ramoc/reserved */
 250         0x20,                   /* 1c/28 - cdfr */
 251         0x00,                   /* 1d/29 - res4 */
 252         0x00,                   /* 1e/30 - cbru */
 253         0x00,                   /* 1f/31 - cbrl */
 254 };
 255
 256 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
 257 {
 258         if (cp->flags & CS4231_FLAG_EBUS)
 259                 return readb(reg_addr);
 260         else
 261                 return sbus_readb(reg_addr);
 262 }
 263
 264 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
 265                             void __iomem *reg_addr)
 266 {
 267         if (cp->flags & CS4231_FLAG_EBUS)
 268                 return writeb(val, reg_addr);
 269         else
 270                 return sbus_writeb(val, reg_addr);
 271 }
 272
 273 /*
 274  *  Basic I/O functions
 275  */
 276
 277 static void snd_cs4231_ready(struct snd_cs4231 *chip)
 278 {
 279         int timeout;
 280
 281         for (timeout = 250; timeout > 0; timeout--) {
 282                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 283                 if ((val & CS4231_INIT) == 0)
 284                         break;
 285                 udelay(100);
 286         }
 287 }
 288
 289 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
 290                             unsigned char value)
 291 {
 292         snd_cs4231_ready(chip);
 293 #ifdef CONFIG_SND_DEBUG
 294         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 295                 snd_printdd("out: auto calibration time out - reg = 0x%x, "
 296                             "value = 0x%x\n",
 297                             reg, value);
 298 #endif
 299         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 300         wmb();
 301         __cs4231_writeb(chip, value, CS4231U(chip, REG));
 302         mb();
 303 }
 304
 305 static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
 306                      unsigned char mask, unsigned char value)
 307 {
 308         unsigned char tmp = (chip->image[reg] & mask) | value;
 309
 310         chip->image[reg] = tmp;
 311         if (!chip->calibrate_mute)
 312                 snd_cs4231_dout(chip, reg, tmp);
 313 }
 314
 315 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
 316                            unsigned char value)
 317 {
 318         snd_cs4231_dout(chip, reg, value);
 319         chip->image[reg] = value;
 320         mb();
 321 }
 322
 323 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
 324 {
 325         snd_cs4231_ready(chip);
 326 #ifdef CONFIG_SND_DEBUG
 327         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 328                 snd_printdd("in: auto calibration time out - reg = 0x%x\n",
 329                             reg);
 330 #endif
 331         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 332         mb();
 333         return __cs4231_readb(chip, CS4231U(chip, REG));
 334 }
 335
 336 /*
 337  *  CS4231 detection / MCE routines
 338  */
 339
 340 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 341 {
 342         int timeout;
 343
 344         /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
 345         for (timeout = 5; timeout > 0; timeout--)
 346                 __cs4231_readb(chip, CS4231U(chip, REGSEL));
 347
 348         /* end of cleanup sequence */
 349         for (timeout = 500; timeout > 0; timeout--) {
 350                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 351                 if ((val & CS4231_INIT) == 0)
 352                         break;
 353                 msleep(1);
 354         }
 355 }
 356
 357 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 358 {
 359         unsigned long flags;
 360         int timeout;
 361
 362         spin_lock_irqsave(&chip->lock, flags);
 363         snd_cs4231_ready(chip);
 364 #ifdef CONFIG_SND_DEBUG
 365         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 366                 snd_printdd("mce_up - auto calibration time out (0)\n");
 367 #endif
 368         chip->mce_bit |= CS4231_MCE;
 369         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 370         if (timeout == 0x80)
 371                 snd_printdd("mce_up [%p]: serious init problem - "
 372                             "codec still busy\n",
 373                             chip->port);
 374         if (!(timeout & CS4231_MCE))
 375                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
 376                                 CS4231U(chip, REGSEL));
 377         spin_unlock_irqrestore(&chip->lock, flags);
 378 }
 379
 380 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 381 {
 382         unsigned long flags, timeout;
 383         int reg;
 384
 385         snd_cs4231_busy_wait(chip);
 386         spin_lock_irqsave(&chip->lock, flags);
 387 #ifdef CONFIG_SND_DEBUG
 388         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 389                 snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
 390                             CS4231U(chip, REGSEL));
 391 #endif
 392         chip->mce_bit &= ~CS4231_MCE;
 393         reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 394         __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
 395                         CS4231U(chip, REGSEL));
 396         if (reg == 0x80)
 397                 snd_printdd("mce_down [%p]: serious init problem "
 398                             "- codec still busy\n", chip->port);
 399         if ((reg & CS4231_MCE) == 0) {
 400                 spin_unlock_irqrestore(&chip->lock, flags);
 401                 return;
 402         }
 403
 404         /*
 405          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 406          */
 407         timeout = jiffies + msecs_to_jiffies(250);
 408         do {
 409                 spin_unlock_irqrestore(&chip->lock, flags);
 410                 msleep(1);
 411                 spin_lock_irqsave(&chip->lock, flags);
 412                 reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
 413                 reg &= CS4231_CALIB_IN_PROGRESS;
 414         } while (reg && time_before(jiffies, timeout));
 415         spin_unlock_irqrestore(&chip->lock, flags);
 416
 417         if (reg)
 418                 snd_printk(KERN_ERR
 419                            "mce_down - auto calibration time out (2)\n");
 420 }
 421
 422 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
 423                                    struct snd_pcm_substream *substream,
 424                                    unsigned int *periods_sent)
 425 {
 426         struct snd_pcm_runtime *runtime = substream->runtime;
 427
 428         while (1) {
 429                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
 430                 unsigned int offset = period_size * (*periods_sent);
 431
 432                 if (WARN_ON(period_size >= (1 << 24)))
 433                         return;
 434
 435                 if (dma_cont->request(dma_cont,
 436                                       runtime->dma_addr + offset, period_size))
 437                         return;
 438                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 439         }
 440 }
 441
 442 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
 443                                unsigned int what, int on)
 444 {
 445         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 446         struct cs4231_dma_control *dma_cont;
 447
 448         if (what & CS4231_PLAYBACK_ENABLE) {
 449                 dma_cont = &chip->p_dma;
 450                 if (on) {
 451                         dma_cont->prepare(dma_cont, 0);
 452                         dma_cont->enable(dma_cont, 1);
 453                         snd_cs4231_advance_dma(dma_cont,
 454                                 chip->playback_substream,
 455                                 &chip->p_periods_sent);
 456                 } else {
 457                         dma_cont->enable(dma_cont, 0);
 458                 }
 459         }
 460         if (what & CS4231_RECORD_ENABLE) {
 461                 dma_cont = &chip->c_dma;
 462                 if (on) {
 463                         dma_cont->prepare(dma_cont, 1);
 464                         dma_cont->enable(dma_cont, 1);
 465                         snd_cs4231_advance_dma(dma_cont,
 466                                 chip->capture_substream,
 467                                 &chip->c_periods_sent);
 468                 } else {
 469                         dma_cont->enable(dma_cont, 0);
 470                 }
 471         }
 472 }
 473
 474 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
 475 {
 476         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 477         int result = 0;
 478
 479         switch (cmd) {
 480         case SNDRV_PCM_TRIGGER_START:
 481         case SNDRV_PCM_TRIGGER_STOP:
 482         {
 483                 unsigned int what = 0;
 484                 struct snd_pcm_substream *s;
 485                 unsigned long flags;
 486
 487                 snd_pcm_group_for_each_entry(s, substream) {
 488                         if (s == chip->playback_substream) {
 489                                 what |= CS4231_PLAYBACK_ENABLE;
 490                                 snd_pcm_trigger_done(s, substream);
 491                         } else if (s == chip->capture_substream) {
 492                                 what |= CS4231_RECORD_ENABLE;
 493                                 snd_pcm_trigger_done(s, substream);
 494                         }
 495                 }
 496
 497                 spin_lock_irqsave(&chip->lock, flags);
 498                 if (cmd == SNDRV_PCM_TRIGGER_START) {
 499                         cs4231_dma_trigger(substream, what, 1);
 500                         chip->image[CS4231_IFACE_CTRL] |= what;
 501                 } else {
 502                         cs4231_dma_trigger(substream, what, 0);
 503                         chip->image[CS4231_IFACE_CTRL] &= ~what;
 504                 }
 505                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 506                                chip->image[CS4231_IFACE_CTRL]);
 507                 spin_unlock_irqrestore(&chip->lock, flags);
 508                 break;
 509         }
 510         default:
 511                 result = -EINVAL;
 512                 break;
 513         }
 514
 515         return result;
 516 }
 517
 518 /*
 519  *  CODEC I/O
 520  */
 521
 522 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 523 {
 524         int i;
 525
 526         for (i = 0; i < 14; i++)
 527                 if (rate == rates[i])
 528                         return freq_bits[i];
 529
 530         return freq_bits[13];
 531 }
 532
 533 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
 534                                            int channels)
 535 {
 536         unsigned char rformat;
 537
 538         rformat = CS4231_LINEAR_8;
 539         switch (format) {
 540         case SNDRV_PCM_FORMAT_MU_LAW:
 541                 rformat = CS4231_ULAW_8;
 542                 break;
 543         case SNDRV_PCM_FORMAT_A_LAW:
 544                 rformat = CS4231_ALAW_8;
 545                 break;
 546         case SNDRV_PCM_FORMAT_S16_LE:
 547                 rformat = CS4231_LINEAR_16;
 548                 break;
 549         case SNDRV_PCM_FORMAT_S16_BE:
 550                 rformat = CS4231_LINEAR_16_BIG;
 551                 break;
 552         case SNDRV_PCM_FORMAT_IMA_ADPCM:
 553                 rformat = CS4231_ADPCM_16;
 554                 break;
 555         }
 556         if (channels > 1)
 557                 rformat |= CS4231_STEREO;
 558         return rformat;
 559 }
 560
 561 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 562 {
 563         unsigned long flags;
 564
 565         mute = mute ? 1 : 0;
 566         spin_lock_irqsave(&chip->lock, flags);
 567         if (chip->calibrate_mute == mute) {
 568                 spin_unlock_irqrestore(&chip->lock, flags);
 569                 return;
 570         }
 571         if (!mute) {
 572                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 573                                 chip->image[CS4231_LEFT_INPUT]);
 574                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 575                                 chip->image[CS4231_RIGHT_INPUT]);
 576                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
 577                                 chip->image[CS4231_LOOPBACK]);
 578         }
 579         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 580                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 581         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 582                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 583         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 584                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 585         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 586                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 587         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 588                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 589         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 590                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 591         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 592                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 593         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 594                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 595         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 596                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 597         chip->calibrate_mute = mute;
 598         spin_unlock_irqrestore(&chip->lock, flags);
 599 }
 600
 601 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 602                                        struct snd_pcm_hw_params *params,
 603                                        unsigned char pdfr)
 604 {
 605         unsigned long flags;
 606
 607         mutex_lock(&chip->mce_mutex);
 608         snd_cs4231_calibrate_mute(chip, 1);
 609
 610         snd_cs4231_mce_up(chip);
 611
 612         spin_lock_irqsave(&chip->lock, flags);
 613         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 614                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 615                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 616                        pdfr);
 617         spin_unlock_irqrestore(&chip->lock, flags);
 618
 619         snd_cs4231_mce_down(chip);
 620
 621         snd_cs4231_calibrate_mute(chip, 0);
 622         mutex_unlock(&chip->mce_mutex);
 623 }
 624
 625 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 626                                       struct snd_pcm_hw_params *params,
 627                                       unsigned char cdfr)
 628 {
 629         unsigned long flags;
 630
 631         mutex_lock(&chip->mce_mutex);
 632         snd_cs4231_calibrate_mute(chip, 1);
 633
 634         snd_cs4231_mce_up(chip);
 635
 636         spin_lock_irqsave(&chip->lock, flags);
 637         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 638                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 639                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 640                                (cdfr & 0x0f));
 641                 spin_unlock_irqrestore(&chip->lock, flags);
 642                 snd_cs4231_mce_down(chip);
 643                 snd_cs4231_mce_up(chip);
 644                 spin_lock_irqsave(&chip->lock, flags);
 645         }
 646         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 647         spin_unlock_irqrestore(&chip->lock, flags);
 648
 649         snd_cs4231_mce_down(chip);
 650
 651         snd_cs4231_calibrate_mute(chip, 0);
 652         mutex_unlock(&chip->mce_mutex);
 653 }
 654
 655 /*
 656  *  Timer interface
 657  */
 658
 659 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
 660 {
 661         struct snd_cs4231 *chip = snd_timer_chip(timer);
 662
 663         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 664 }
 665
 666 static int snd_cs4231_timer_start(struct snd_timer *timer)
 667 {
 668         unsigned long flags;
 669         unsigned int ticks;
 670         struct snd_cs4231 *chip = snd_timer_chip(timer);
 671
 672         spin_lock_irqsave(&chip->lock, flags);
 673         ticks = timer->sticks;
 674         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 675             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 676             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 677                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 678                                chip->image[CS4231_TIMER_HIGH] =
 679                                (unsigned char) (ticks >> 8));
 680                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
 681                                chip->image[CS4231_TIMER_LOW] =
 682                                (unsigned char) ticks);
 683                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 684                                chip->image[CS4231_ALT_FEATURE_1] |
 685                                         CS4231_TIMER_ENABLE);
 686         }
 687         spin_unlock_irqrestore(&chip->lock, flags);
 688
 689         return 0;
 690 }
 691
 692 static int snd_cs4231_timer_stop(struct snd_timer *timer)
 693 {
 694         unsigned long flags;
 695         struct snd_cs4231 *chip = snd_timer_chip(timer);
 696
 697         spin_lock_irqsave(&chip->lock, flags);
 698         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
 699         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 700                        chip->image[CS4231_ALT_FEATURE_1]);
 701         spin_unlock_irqrestore(&chip->lock, flags);
 702
 703         return 0;
 704 }
 705
 706 static void snd_cs4231_init(struct snd_cs4231 *chip)
 707 {
 708         unsigned long flags;
 709
 710         snd_cs4231_mce_down(chip);
 711
 712 #ifdef SNDRV_DEBUG_MCE
 713         snd_printdd("init: (1)\n");
 714 #endif
 715         snd_cs4231_mce_up(chip);
 716         spin_lock_irqsave(&chip->lock, flags);
 717         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 718                                             CS4231_PLAYBACK_PIO |
 719                                             CS4231_RECORD_ENABLE |
 720                                             CS4231_RECORD_PIO |
 721                                             CS4231_CALIB_MODE);
 722         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 723         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 724         spin_unlock_irqrestore(&chip->lock, flags);
 725         snd_cs4231_mce_down(chip);
 726
 727 #ifdef SNDRV_DEBUG_MCE
 728         snd_printdd("init: (2)\n");
 729 #endif
 730
 731         snd_cs4231_mce_up(chip);
 732         spin_lock_irqsave(&chip->lock, flags);
 733         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 734                         chip->image[CS4231_ALT_FEATURE_1]);
 735         spin_unlock_irqrestore(&chip->lock, flags);
 736         snd_cs4231_mce_down(chip);
 737
 738 #ifdef SNDRV_DEBUG_MCE
 739         snd_printdd("init: (3) - afei = 0x%x\n",
 740                     chip->image[CS4231_ALT_FEATURE_1]);
 741 #endif
 742
 743         spin_lock_irqsave(&chip->lock, flags);
 744         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
 745                         chip->image[CS4231_ALT_FEATURE_2]);
 746         spin_unlock_irqrestore(&chip->lock, flags);
 747
 748         snd_cs4231_mce_up(chip);
 749         spin_lock_irqsave(&chip->lock, flags);
 750         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 751                         chip->image[CS4231_PLAYBK_FORMAT]);
 752         spin_unlock_irqrestore(&chip->lock, flags);
 753         snd_cs4231_mce_down(chip);
 754
 755 #ifdef SNDRV_DEBUG_MCE
 756         snd_printdd("init: (4)\n");
 757 #endif
 758
 759         snd_cs4231_mce_up(chip);
 760         spin_lock_irqsave(&chip->lock, flags);
 761         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 762         spin_unlock_irqrestore(&chip->lock, flags);
 763         snd_cs4231_mce_down(chip);
 764
 765 #ifdef SNDRV_DEBUG_MCE
 766         snd_printdd("init: (5)\n");
 767 #endif
 768 }
 769
 770 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 771 {
 772         unsigned long flags;
 773
 774         mutex_lock(&chip->open_mutex);
 775         if ((chip->mode & mode)) {
 776                 mutex_unlock(&chip->open_mutex);
 777                 return -EAGAIN;
 778         }
 779         if (chip->mode & CS4231_MODE_OPEN) {
 780                 chip->mode |= mode;
 781                 mutex_unlock(&chip->open_mutex);
 782                 return 0;
 783         }
 784         /* ok. now enable and ack CODEC IRQ */
 785         spin_lock_irqsave(&chip->lock, flags);
 786         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 787                        CS4231_RECORD_IRQ |
 788                        CS4231_TIMER_IRQ);
 789         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 790         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 791         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 792
 793         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 794                        CS4231_RECORD_IRQ |
 795                        CS4231_TIMER_IRQ);
 796         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 797
 798         spin_unlock_irqrestore(&chip->lock, flags);
 799
 800         chip->mode = mode;
 801         mutex_unlock(&chip->open_mutex);
 802         return 0;
 803 }
 804
 805 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 806 {
 807         unsigned long flags;
 808
 809         mutex_lock(&chip->open_mutex);
 810         chip->mode &= ~mode;
 811         if (chip->mode & CS4231_MODE_OPEN) {
 812                 mutex_unlock(&chip->open_mutex);
 813                 return;
 814         }
 815         snd_cs4231_calibrate_mute(chip, 1);
 816
 817         /* disable IRQ */
 818         spin_lock_irqsave(&chip->lock, flags);
 819         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 820         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 821         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 822
 823         /* now disable record & playback */
 824
 825         if (chip->image[CS4231_IFACE_CTRL] &
 826             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 827              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 828                 spin_unlock_irqrestore(&chip->lock, flags);
 829                 snd_cs4231_mce_up(chip);
 830                 spin_lock_irqsave(&chip->lock, flags);
 831                 chip->image[CS4231_IFACE_CTRL] &=
 832                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 833                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 834                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 835                                 chip->image[CS4231_IFACE_CTRL]);
 836                 spin_unlock_irqrestore(&chip->lock, flags);
 837                 snd_cs4231_mce_down(chip);
 838                 spin_lock_irqsave(&chip->lock, flags);
 839         }
 840
 841         /* clear IRQ again */
 842         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 843         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 844         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
 845         spin_unlock_irqrestore(&chip->lock, flags);
 846
 847         snd_cs4231_calibrate_mute(chip, 0);
 848
 849         chip->mode = 0;
 850         mutex_unlock(&chip->open_mutex);
 851 }
 852
 853 /*
 854  *  timer open/close
 855  */
 856
 857 static int snd_cs4231_timer_open(struct snd_timer *timer)
 858 {
 859         struct snd_cs4231 *chip = snd_timer_chip(timer);
 860         snd_cs4231_open(chip, CS4231_MODE_TIMER);
 861         return 0;
 862 }
 863
 864 static int snd_cs4231_timer_close(struct snd_timer *timer)
 865 {
 866         struct snd_cs4231 *chip = snd_timer_chip(timer);
 867         snd_cs4231_close(chip, CS4231_MODE_TIMER);
 868         return 0;
 869 }
 870
 871 static const struct snd_timer_hardware snd_cs4231_timer_table = {
 872         .flags          =       SNDRV_TIMER_HW_AUTO,
 873         .resolution     =       9945,
 874         .ticks          =       65535,
 875         .open           =       snd_cs4231_timer_open,
 876         .close          =       snd_cs4231_timer_close,
 877         .c_resolution   =       snd_cs4231_timer_resolution,
 878         .start          =       snd_cs4231_timer_start,
 879         .stop           =       snd_cs4231_timer_stop,
 880 };
 881
 882 /*
 883  *  ok.. exported functions..
 884  */
 885
 886 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 887                                          struct snd_pcm_hw_params *hw_params)
 888 {
 889         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 890         unsigned char new_pdfr;
 891
 892         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 893                                          params_channels(hw_params)) |
 894                 snd_cs4231_get_rate(params_rate(hw_params));
 895         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
 896
 897         return 0;
 898 }
 899
 900 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
 901 {
 902         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 903         struct snd_pcm_runtime *runtime = substream->runtime;
 904         unsigned long flags;
 905         int ret = 0;
 906
 907         spin_lock_irqsave(&chip->lock, flags);
 908
 909         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 910                                             CS4231_PLAYBACK_PIO);
 911
 912         if (WARN_ON(runtime->period_size > 0xffff + 1)) {
 913                 ret = -EINVAL;
 914                 goto out;
 915         }
 916
 917         chip->p_periods_sent = 0;
 918
 919 out:
 920         spin_unlock_irqrestore(&chip->lock, flags);
 921
 922         return ret;
 923 }
 924
 925 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 926                                         struct snd_pcm_hw_params *hw_params)
 927 {
 928         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 929         unsigned char new_cdfr;
 930
 931         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 932                                          params_channels(hw_params)) |
 933                 snd_cs4231_get_rate(params_rate(hw_params));
 934         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
 935
 936         return 0;
 937 }
 938
 939 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 940 {
 941         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 942         unsigned long flags;
 943
 944         spin_lock_irqsave(&chip->lock, flags);
 945         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
 946                                             CS4231_RECORD_PIO);
 947
 948
 949         chip->c_periods_sent = 0;
 950         spin_unlock_irqrestore(&chip->lock, flags);
 951
 952         return 0;
 953 }
 954
 955 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 956 {
 957         unsigned long flags;
 958         unsigned char res;
 959
 960         spin_lock_irqsave(&chip->lock, flags);
 961         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 962         spin_unlock_irqrestore(&chip->lock, flags);
 963
 964         /* detect overrange only above 0dB; may be user selectable? */
 965         if (res & (0x08 | 0x02))
 966                 chip->capture_substream->runtime->overrange++;
 967 }
 968
 969 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
 970 {
 971         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
 972                 snd_pcm_period_elapsed(chip->playback_substream);
 973                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
 974                                             &chip->p_periods_sent);
 975         }
 976 }
 977
 978 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
 979 {
 980         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
 981                 snd_pcm_period_elapsed(chip->capture_substream);
 982                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
 983                                             &chip->c_periods_sent);
 984         }
 985 }
 986
 987 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
 988                                         struct snd_pcm_substream *substream)
 989 {
 990         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 991         struct cs4231_dma_control *dma_cont = &chip->p_dma;
 992         size_t ptr;
 993
 994         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
 995                 return 0;
 996         ptr = dma_cont->address(dma_cont);
 997         if (ptr != 0)
 998                 ptr -= substream->runtime->dma_addr;
 999
1000         return bytes_to_frames(substream->runtime, ptr);
1001 }
1002
1003 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1004                                         struct snd_pcm_substream *substream)
1005 {
1006         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1007         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1008         size_t ptr;
1009
1010         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1011                 return 0;
1012         ptr = dma_cont->address(dma_cont);
1013         if (ptr != 0)
1014                 ptr -= substream->runtime->dma_addr;
1015
1016         return bytes_to_frames(substream->runtime, ptr);
1017 }
1018
1019 static int snd_cs4231_probe(struct snd_cs4231 *chip)
1020 {
1021         unsigned long flags;
1022         int i;
1023         int id = 0;
1024         int vers = 0;
1025         unsigned char *ptr;
1026
1027         for (i = 0; i < 50; i++) {
1028                 mb();
1029                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1030                         msleep(2);
1031                 else {
1032                         spin_lock_irqsave(&chip->lock, flags);
1033                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1034                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1035                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1036                         spin_unlock_irqrestore(&chip->lock, flags);
1037                         if (id == 0x0a)
1038                                 break;  /* this is valid value */
1039                 }
1040         }
1041         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1042         if (id != 0x0a)
1043                 return -ENODEV; /* no valid device found */
1044
1045         spin_lock_irqsave(&chip->lock, flags);
1046
1047         /* clear any pendings IRQ */
1048         __cs4231_readb(chip, CS4231U(chip, STATUS));
1049         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1050         mb();
1051
1052         spin_unlock_irqrestore(&chip->lock, flags);
1053
1054         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1055         chip->image[CS4231_IFACE_CTRL] =
1056                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1057         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1058         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1059         if (vers & 0x20)
1060                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1061
1062         ptr = (unsigned char *) &chip->image;
1063
1064         snd_cs4231_mce_down(chip);
1065
1066         spin_lock_irqsave(&chip->lock, flags);
1067
1068         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1069                 snd_cs4231_out(chip, i, *ptr++);
1070
1071         spin_unlock_irqrestore(&chip->lock, flags);
1072
1073         snd_cs4231_mce_up(chip);
1074
1075         snd_cs4231_mce_down(chip);
1076
1077         mdelay(2);
1078
1079         return 0;               /* all things are ok.. */
1080 }
1081
1082 static const struct snd_pcm_hardware snd_cs4231_playback = {
1083         .info                   = SNDRV_PCM_INFO_MMAP |
1084                                   SNDRV_PCM_INFO_INTERLEAVED |
1085                                   SNDRV_PCM_INFO_MMAP_VALID |
1086                                   SNDRV_PCM_INFO_SYNC_START,
1087         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1088                                   SNDRV_PCM_FMTBIT_A_LAW |
1089                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1090                                   SNDRV_PCM_FMTBIT_U8 |
1091                                   SNDRV_PCM_FMTBIT_S16_LE |
1092                                   SNDRV_PCM_FMTBIT_S16_BE,
1093         .rates                  = SNDRV_PCM_RATE_KNOT |
1094                                   SNDRV_PCM_RATE_8000_48000,
1095         .rate_min               = 5510,
1096         .rate_max               = 48000,
1097         .channels_min           = 1,
1098         .channels_max           = 2,
1099         .buffer_bytes_max       = 32 * 1024,
1100         .period_bytes_min       = 64,
1101         .period_bytes_max       = 32 * 1024,
1102         .periods_min            = 1,
1103         .periods_max            = 1024,
1104 };
1105
1106 static const struct snd_pcm_hardware snd_cs4231_capture = {
1107         .info                   = SNDRV_PCM_INFO_MMAP |
1108                                   SNDRV_PCM_INFO_INTERLEAVED |
1109                                   SNDRV_PCM_INFO_MMAP_VALID |
1110                                   SNDRV_PCM_INFO_SYNC_START,
1111         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1112                                   SNDRV_PCM_FMTBIT_A_LAW |
1113                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1114                                   SNDRV_PCM_FMTBIT_U8 |
1115                                   SNDRV_PCM_FMTBIT_S16_LE |
1116                                   SNDRV_PCM_FMTBIT_S16_BE,
1117         .rates                  = SNDRV_PCM_RATE_KNOT |
1118                                   SNDRV_PCM_RATE_8000_48000,
1119         .rate_min               = 5510,
1120         .rate_max               = 48000,
1121         .channels_min           = 1,
1122         .channels_max           = 2,
1123         .buffer_bytes_max       = 32 * 1024,
1124         .period_bytes_min       = 64,
1125         .period_bytes_max       = 32 * 1024,
1126         .periods_min            = 1,
1127         .periods_max            = 1024,
1128 };
1129
1130 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1131 {
1132         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1133         struct snd_pcm_runtime *runtime = substream->runtime;
1134         int err;
1135
1136         runtime->hw = snd_cs4231_playback;
1137
1138         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1139         if (err < 0)
1140                 return err;
1141         chip->playback_substream = substream;
1142         chip->p_periods_sent = 0;
1143         snd_pcm_set_sync(substream);
1144         snd_cs4231_xrate(runtime);
1145
1146         return 0;
1147 }
1148
1149 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1150 {
1151         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1152         struct snd_pcm_runtime *runtime = substream->runtime;
1153         int err;
1154
1155         runtime->hw = snd_cs4231_capture;
1156
1157         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1158         if (err < 0)
1159                 return err;
1160         chip->capture_substream = substream;
1161         chip->c_periods_sent = 0;
1162         snd_pcm_set_sync(substream);
1163         snd_cs4231_xrate(runtime);
1164
1165         return 0;
1166 }
1167
1168 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1169 {
1170         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1171
1172         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1173         chip->playback_substream = NULL;
1174
1175         return 0;
1176 }
1177
1178 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1179 {
1180         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1181
1182         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1183         chip->capture_substream = NULL;
1184
1185         return 0;
1186 }
1187
1188 /* XXX We can do some power-management, in particular on EBUS using
1189  * XXX the audio AUXIO register...
1190  */
1191
1192 static const struct snd_pcm_ops snd_cs4231_playback_ops = {
1193         .open           =       snd_cs4231_playback_open,
1194         .close          =       snd_cs4231_playback_close,
1195         .hw_params      =       snd_cs4231_playback_hw_params,
1196         .prepare        =       snd_cs4231_playback_prepare,
1197         .trigger        =       snd_cs4231_trigger,
1198         .pointer        =       snd_cs4231_playback_pointer,
1199 };
1200
1201 static const struct snd_pcm_ops snd_cs4231_capture_ops = {
1202         .open           =       snd_cs4231_capture_open,
1203         .close          =       snd_cs4231_capture_close,
1204         .hw_params      =       snd_cs4231_capture_hw_params,
1205         .prepare        =       snd_cs4231_capture_prepare,
1206         .trigger        =       snd_cs4231_trigger,
1207         .pointer        =       snd_cs4231_capture_pointer,
1208 };
1209
1210 static int snd_cs4231_pcm(struct snd_card *card)
1211 {
1212         struct snd_cs4231 *chip = card->private_data;
1213         struct snd_pcm *pcm;
1214         int err;
1215
1216         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1217         if (err < 0)
1218                 return err;
1219
1220         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1221                         &snd_cs4231_playback_ops);
1222         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1223                         &snd_cs4231_capture_ops);
1224
1225         /* global setup */
1226         pcm->private_data = chip;
1227         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1228         strcpy(pcm->name, "CS4231");
1229
1230         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
1231                                        &chip->op->dev, 64 * 1024, 128 * 1024);
1232
1233         chip->pcm = pcm;
1234
1235         return 0;
1236 }
1237
1238 static int snd_cs4231_timer(struct snd_card *card)
1239 {
1240         struct snd_cs4231 *chip = card->private_data;
1241         struct snd_timer *timer;
1242         struct snd_timer_id tid;
1243         int err;
1244
1245         /* Timer initialization */
1246         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1247         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1248         tid.card = card->number;
1249         tid.device = 0;
1250         tid.subdevice = 0;
1251         err = snd_timer_new(card, "CS4231", &tid, &timer);
1252         if (err < 0)
1253                 return err;
1254         strcpy(timer->name, "CS4231");
1255         timer->private_data = chip;
1256         timer->hw = snd_cs4231_timer_table;
1257         chip->timer = timer;
1258
1259         return 0;
1260 }
1261
1262 /*
1263  *  MIXER part
1264  */
1265
1266 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1267                                struct snd_ctl_elem_info *uinfo)
1268 {
1269         static const char * const texts[4] = {
1270                 "Line", "CD", "Mic", "Mix"
1271         };
1272
1273         return snd_ctl_enum_info(uinfo, 2, 4, texts);
1274 }
1275
1276 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1277                               struct snd_ctl_elem_value *ucontrol)
1278 {
1279         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1280         unsigned long flags;
1281
1282         spin_lock_irqsave(&chip->lock, flags);
1283         ucontrol->value.enumerated.item[0] =
1284                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1285         ucontrol->value.enumerated.item[1] =
1286                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1287         spin_unlock_irqrestore(&chip->lock, flags);
1288
1289         return 0;
1290 }
1291
1292 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1293                               struct snd_ctl_elem_value *ucontrol)
1294 {
1295         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1296         unsigned long flags;
1297         unsigned short left, right;
1298         int change;
1299
1300         if (ucontrol->value.enumerated.item[0] > 3 ||
1301             ucontrol->value.enumerated.item[1] > 3)
1302                 return -EINVAL;
1303         left = ucontrol->value.enumerated.item[0] << 6;
1304         right = ucontrol->value.enumerated.item[1] << 6;
1305
1306         spin_lock_irqsave(&chip->lock, flags);
1307
1308         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1309         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1310         change = left != chip->image[CS4231_LEFT_INPUT] ||
1311                  right != chip->image[CS4231_RIGHT_INPUT];
1312         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1313         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1314
1315         spin_unlock_irqrestore(&chip->lock, flags);
1316
1317         return change;
1318 }
1319
1320 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1321                                   struct snd_ctl_elem_info *uinfo)
1322 {
1323         int mask = (kcontrol->private_value >> 16) & 0xff;
1324
1325         uinfo->type = (mask == 1) ?
1326                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1327         uinfo->count = 1;
1328         uinfo->value.integer.min = 0;
1329         uinfo->value.integer.max = mask;
1330
1331         return 0;
1332 }
1333
1334 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1335                                  struct snd_ctl_elem_value *ucontrol)
1336 {
1337         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1338         unsigned long flags;
1339         int reg = kcontrol->private_value & 0xff;
1340         int shift = (kcontrol->private_value >> 8) & 0xff;
1341         int mask = (kcontrol->private_value >> 16) & 0xff;
1342         int invert = (kcontrol->private_value >> 24) & 0xff;
1343
1344         spin_lock_irqsave(&chip->lock, flags);
1345
1346         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1347
1348         spin_unlock_irqrestore(&chip->lock, flags);
1349
1350         if (invert)
1351                 ucontrol->value.integer.value[0] =
1352                         (mask - ucontrol->value.integer.value[0]);
1353
1354         return 0;
1355 }
1356
1357 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1358                                  struct snd_ctl_elem_value *ucontrol)
1359 {
1360         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1361         unsigned long flags;
1362         int reg = kcontrol->private_value & 0xff;
1363         int shift = (kcontrol->private_value >> 8) & 0xff;
1364         int mask = (kcontrol->private_value >> 16) & 0xff;
1365         int invert = (kcontrol->private_value >> 24) & 0xff;
1366         int change;
1367         unsigned short val;
1368
1369         val = (ucontrol->value.integer.value[0] & mask);
1370         if (invert)
1371                 val = mask - val;
1372         val <<= shift;
1373
1374         spin_lock_irqsave(&chip->lock, flags);
1375
1376         val = (chip->image[reg] & ~(mask << shift)) | val;
1377         change = val != chip->image[reg];
1378         snd_cs4231_out(chip, reg, val);
1379
1380         spin_unlock_irqrestore(&chip->lock, flags);
1381
1382         return change;
1383 }
1384
1385 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1386                                   struct snd_ctl_elem_info *uinfo)
1387 {
1388         int mask = (kcontrol->private_value >> 24) & 0xff;
1389
1390         uinfo->type = mask == 1 ?
1391                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1392         uinfo->count = 2;
1393         uinfo->value.integer.min = 0;
1394         uinfo->value.integer.max = mask;
1395
1396         return 0;
1397 }
1398
1399 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1400                                  struct snd_ctl_elem_value *ucontrol)
1401 {
1402         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1403         unsigned long flags;
1404         int left_reg = kcontrol->private_value & 0xff;
1405         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1406         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1407         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1408         int mask = (kcontrol->private_value >> 24) & 0xff;
1409         int invert = (kcontrol->private_value >> 22) & 1;
1410
1411         spin_lock_irqsave(&chip->lock, flags);
1412
1413         ucontrol->value.integer.value[0] =
1414                 (chip->image[left_reg] >> shift_left) & mask;
1415         ucontrol->value.integer.value[1] =
1416                 (chip->image[right_reg] >> shift_right) & mask;
1417
1418         spin_unlock_irqrestore(&chip->lock, flags);
1419
1420         if (invert) {
1421                 ucontrol->value.integer.value[0] =
1422                         (mask - ucontrol->value.integer.value[0]);
1423                 ucontrol->value.integer.value[1] =
1424                         (mask - ucontrol->value.integer.value[1]);
1425         }
1426
1427         return 0;
1428 }
1429
1430 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1431                                  struct snd_ctl_elem_value *ucontrol)
1432 {
1433         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1434         unsigned long flags;
1435         int left_reg = kcontrol->private_value & 0xff;
1436         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1437         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1438         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1439         int mask = (kcontrol->private_value >> 24) & 0xff;
1440         int invert = (kcontrol->private_value >> 22) & 1;
1441         int change;
1442         unsigned short val1, val2;
1443
1444         val1 = ucontrol->value.integer.value[0] & mask;
1445         val2 = ucontrol->value.integer.value[1] & mask;
1446         if (invert) {
1447                 val1 = mask - val1;
1448                 val2 = mask - val2;
1449         }
1450         val1 <<= shift_left;
1451         val2 <<= shift_right;
1452
1453         spin_lock_irqsave(&chip->lock, flags);
1454
1455         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1456         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1457         change = val1 != chip->image[left_reg];
1458         change |= val2 != chip->image[right_reg];
1459         snd_cs4231_out(chip, left_reg, val1);
1460         snd_cs4231_out(chip, right_reg, val2);
1461
1462         spin_unlock_irqrestore(&chip->lock, flags);
1463
1464         return change;
1465 }
1466
1467 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1468 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1469   .info = snd_cs4231_info_single,       \
1470   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1471   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1472
1473 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1474                         shift_right, mask, invert) \
1475 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1476   .info = snd_cs4231_info_double,       \
1477   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1478   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1479                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1480
1481 static const struct snd_kcontrol_new snd_cs4231_controls[] = {
1482 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1483                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1484 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1485                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1486 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1487                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1488 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1489                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1490 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1491                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1492 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1493                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1494 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1495                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1496 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1497                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1498 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1499 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1500 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1501 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1502 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1503                 15, 0),
1504 {
1505         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1506         .name   = "Capture Source",
1507         .info   = snd_cs4231_info_mux,
1508         .get    = snd_cs4231_get_mux,
1509         .put    = snd_cs4231_put_mux,
1510 },
1511 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1512                 1, 0),
1513 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1514 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1515 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1516 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1517 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1518 };
1519
1520 static int snd_cs4231_mixer(struct snd_card *card)
1521 {
1522         struct snd_cs4231 *chip = card->private_data;
1523         int err, idx;
1524
1525         if (snd_BUG_ON(!chip || !chip->pcm))
1526                 return -EINVAL;
1527
1528         strcpy(card->mixername, chip->pcm->name);
1529
1530         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1531                 err = snd_ctl_add(card,
1532                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1533                 if (err < 0)
1534                         return err;
1535         }
1536         return 0;
1537 }
1538
1539 static int dev;
1540
1541 static int cs4231_attach_begin(struct platform_device *op,
1542                                struct snd_card **rcard)
1543 {
1544         struct snd_card *card;
1545         struct snd_cs4231 *chip;
1546         int err;
1547
1548         *rcard = NULL;
1549
1550         if (dev >= SNDRV_CARDS)
1551                 return -ENODEV;
1552
1553         if (!enable[dev]) {
1554                 dev++;
1555                 return -ENOENT;
1556         }
1557
1558         err = snd_card_new(&op->dev, index[dev], id[dev], THIS_MODULE,
1559                            sizeof(struct snd_cs4231), &card);
1560         if (err < 0)
1561                 return err;
1562
1563         strcpy(card->driver, "CS4231");
1564         strcpy(card->shortname, "Sun CS4231");
1565
1566         chip = card->private_data;
1567         chip->card = card;
1568
1569         *rcard = card;
1570         return 0;
1571 }
1572
1573 static int cs4231_attach_finish(struct snd_card *card)
1574 {
1575         struct snd_cs4231 *chip = card->private_data;
1576         int err;
1577
1578         err = snd_cs4231_pcm(card);
1579         if (err < 0)
1580                 goto out_err;
1581
1582         err = snd_cs4231_mixer(card);
1583         if (err < 0)
1584                 goto out_err;
1585
1586         err = snd_cs4231_timer(card);
1587         if (err < 0)
1588                 goto out_err;
1589
1590         err = snd_card_register(card);
1591         if (err < 0)
1592                 goto out_err;
1593
1594         dev_set_drvdata(&chip->op->dev, chip);
1595
1596         dev++;
1597         return 0;
1598
1599 out_err:
1600         snd_card_free(card);
1601         return err;
1602 }
1603
1604 #ifdef SBUS_SUPPORT
1605
1606 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1607 {
1608         unsigned long flags;
1609         unsigned char status;
1610         u32 csr;
1611         struct snd_cs4231 *chip = dev_id;
1612
1613         /*This is IRQ is not raised by the cs4231*/
1614         if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1615                 return IRQ_NONE;
1616
1617         /* ACK the APC interrupt. */
1618         csr = sbus_readl(chip->port + APCCSR);
1619
1620         sbus_writel(csr, chip->port + APCCSR);
1621
1622         if ((csr & APC_PDMA_READY) &&
1623             (csr & APC_PLAY_INT) &&
1624             (csr & APC_XINT_PNVA) &&
1625             !(csr & APC_XINT_EMPT))
1626                         snd_cs4231_play_callback(chip);
1627
1628         if ((csr & APC_CDMA_READY) &&
1629             (csr & APC_CAPT_INT) &&
1630             (csr & APC_XINT_CNVA) &&
1631             !(csr & APC_XINT_EMPT))
1632                         snd_cs4231_capture_callback(chip);
1633
1634         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1635
1636         if (status & CS4231_TIMER_IRQ) {
1637                 if (chip->timer)
1638                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1639         }
1640
1641         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1642                 snd_cs4231_overrange(chip);
1643
1644         /* ACK the CS4231 interrupt. */
1645         spin_lock_irqsave(&chip->lock, flags);
1646         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1647         spin_unlock_irqrestore(&chip->lock, flags);
1648
1649         return IRQ_HANDLED;
1650 }
1651
1652 /*
1653  * SBUS DMA routines
1654  */
1655
1656 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1657                             dma_addr_t bus_addr, size_t len)
1658 {
1659         unsigned long flags;
1660         u32 test, csr;
1661         int err;
1662         struct sbus_dma_info *base = &dma_cont->sbus_info;
1663
1664         if (len >= (1 << 24))
1665                 return -EINVAL;
1666         spin_lock_irqsave(&base->lock, flags);
1667         csr = sbus_readl(base->regs + APCCSR);
1668         err = -EINVAL;
1669         test = APC_CDMA_READY;
1670         if (base->dir == APC_PLAY)
1671                 test = APC_PDMA_READY;
1672         if (!(csr & test))
1673                 goto out;
1674         err = -EBUSY;
1675         test = APC_XINT_CNVA;
1676         if (base->dir == APC_PLAY)
1677                 test = APC_XINT_PNVA;
1678         if (!(csr & test))
1679                 goto out;
1680         err = 0;
1681         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1682         sbus_writel(len, base->regs + base->dir + APCNC);
1683 out:
1684         spin_unlock_irqrestore(&base->lock, flags);
1685         return err;
1686 }
1687
1688 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1689 {
1690         unsigned long flags;
1691         u32 csr, test;
1692         struct sbus_dma_info *base = &dma_cont->sbus_info;
1693
1694         spin_lock_irqsave(&base->lock, flags);
1695         csr = sbus_readl(base->regs + APCCSR);
1696         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1697                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1698                  APC_XINT_PENA;
1699         if (base->dir == APC_RECORD)
1700                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1701                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1702         csr |= test;
1703         sbus_writel(csr, base->regs + APCCSR);
1704         spin_unlock_irqrestore(&base->lock, flags);
1705 }
1706
1707 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1708 {
1709         unsigned long flags;
1710         u32 csr, shift;
1711         struct sbus_dma_info *base = &dma_cont->sbus_info;
1712
1713         spin_lock_irqsave(&base->lock, flags);
1714         if (!on) {
1715                 sbus_writel(0, base->regs + base->dir + APCNC);
1716                 sbus_writel(0, base->regs + base->dir + APCNVA);
1717                 if (base->dir == APC_PLAY) {
1718                         sbus_writel(0, base->regs + base->dir + APCC);
1719                         sbus_writel(0, base->regs + base->dir + APCVA);
1720                 }
1721
1722                 udelay(1200);
1723         }
1724         csr = sbus_readl(base->regs + APCCSR);
1725         shift = 0;
1726         if (base->dir == APC_PLAY)
1727                 shift = 1;
1728         if (on)
1729                 csr &= ~(APC_CPAUSE << shift);
1730         else
1731                 csr |= (APC_CPAUSE << shift);
1732         sbus_writel(csr, base->regs + APCCSR);
1733         if (on)
1734                 csr |= (APC_CDMA_READY << shift);
1735         else
1736                 csr &= ~(APC_CDMA_READY << shift);
1737         sbus_writel(csr, base->regs + APCCSR);
1738
1739         spin_unlock_irqrestore(&base->lock, flags);
1740 }
1741
1742 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1743 {
1744         struct sbus_dma_info *base = &dma_cont->sbus_info;
1745
1746         return sbus_readl(base->regs + base->dir + APCVA);
1747 }
1748
1749 /*
1750  * Init and exit routines
1751  */
1752
1753 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1754 {
1755         struct platform_device *op = chip->op;
1756
1757         if (chip->irq[0])
1758                 free_irq(chip->irq[0], chip);
1759
1760         if (chip->port)
1761                 of_iounmap(&op->resource[0], chip->port, chip->regs_size);
1762
1763         return 0;
1764 }
1765
1766 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1767 {
1768         struct snd_cs4231 *cp = device->device_data;
1769
1770         return snd_cs4231_sbus_free(cp);
1771 }
1772
1773 static const struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1774         .dev_free       =       snd_cs4231_sbus_dev_free,
1775 };
1776
1777 static int snd_cs4231_sbus_create(struct snd_card *card,
1778                                   struct platform_device *op,
1779                                   int dev)
1780 {
1781         struct snd_cs4231 *chip = card->private_data;
1782         int err;
1783
1784         spin_lock_init(&chip->lock);
1785         spin_lock_init(&chip->c_dma.sbus_info.lock);
1786         spin_lock_init(&chip->p_dma.sbus_info.lock);
1787         mutex_init(&chip->mce_mutex);
1788         mutex_init(&chip->open_mutex);
1789         chip->op = op;
1790         chip->regs_size = resource_size(&op->resource[0]);
1791         memcpy(&chip->image, &snd_cs4231_original_image,
1792                sizeof(snd_cs4231_original_image));
1793
1794         chip->port = of_ioremap(&op->resource[0], 0,
1795                                 chip->regs_size, "cs4231");
1796         if (!chip->port) {
1797                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1798                 return -EIO;
1799         }
1800
1801         chip->c_dma.sbus_info.regs = chip->port;
1802         chip->p_dma.sbus_info.regs = chip->port;
1803         chip->c_dma.sbus_info.dir = APC_RECORD;
1804         chip->p_dma.sbus_info.dir = APC_PLAY;
1805
1806         chip->p_dma.prepare = sbus_dma_prepare;
1807         chip->p_dma.enable = sbus_dma_enable;
1808         chip->p_dma.request = sbus_dma_request;
1809         chip->p_dma.address = sbus_dma_addr;
1810
1811         chip->c_dma.prepare = sbus_dma_prepare;
1812         chip->c_dma.enable = sbus_dma_enable;
1813         chip->c_dma.request = sbus_dma_request;
1814         chip->c_dma.address = sbus_dma_addr;
1815
1816         if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
1817                         IRQF_SHARED, "cs4231", chip)) {
1818                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1819                             dev, op->archdata.irqs[0]);
1820                 snd_cs4231_sbus_free(chip);
1821                 return -EBUSY;
1822         }
1823         chip->irq[0] = op->archdata.irqs[0];
1824
1825         if (snd_cs4231_probe(chip) < 0) {
1826                 snd_cs4231_sbus_free(chip);
1827                 return -ENODEV;
1828         }
1829         snd_cs4231_init(chip);
1830
1831         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1832                              chip, &snd_cs4231_sbus_dev_ops);
1833         if (err < 0) {
1834                 snd_cs4231_sbus_free(chip);
1835                 return err;
1836         }
1837
1838         return 0;
1839 }
1840
1841 static int cs4231_sbus_probe(struct platform_device *op)
1842 {
1843         struct resource *rp = &op->resource[0];
1844         struct snd_card *card;
1845         int err;
1846
1847         err = cs4231_attach_begin(op, &card);
1848         if (err)
1849                 return err;
1850
1851         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1852                 card->shortname,
1853                 rp->flags & 0xffL,
1854                 (unsigned long long)rp->start,
1855                 op->archdata.irqs[0]);
1856
1857         err = snd_cs4231_sbus_create(card, op, dev);
1858         if (err < 0) {
1859                 snd_card_free(card);
1860                 return err;
1861         }
1862
1863         return cs4231_attach_finish(card);
1864 }
1865 #endif
1866
1867 #ifdef EBUS_SUPPORT
1868
1869 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1870                                           void *cookie)
1871 {
1872         struct snd_cs4231 *chip = cookie;
1873
1874         snd_cs4231_play_callback(chip);
1875 }
1876
1877 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1878                                              int event, void *cookie)
1879 {
1880         struct snd_cs4231 *chip = cookie;
1881
1882         snd_cs4231_capture_callback(chip);
1883 }
1884
1885 /*
1886  * EBUS DMA wrappers
1887  */
1888
1889 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1890                              dma_addr_t bus_addr, size_t len)
1891 {
1892         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1893 }
1894
1895 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1896 {
1897         ebus_dma_enable(&dma_cont->ebus_info, on);
1898 }
1899
1900 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1901 {
1902         ebus_dma_prepare(&dma_cont->ebus_info, dir);
1903 }
1904
1905 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1906 {
1907         return ebus_dma_addr(&dma_cont->ebus_info);
1908 }
1909
1910 /*
1911  * Init and exit routines
1912  */
1913
1914 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1915 {
1916         struct platform_device *op = chip->op;
1917
1918         if (chip->c_dma.ebus_info.regs) {
1919                 ebus_dma_unregister(&chip->c_dma.ebus_info);
1920                 of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
1921         }
1922         if (chip->p_dma.ebus_info.regs) {
1923                 ebus_dma_unregister(&chip->p_dma.ebus_info);
1924                 of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
1925         }
1926
1927         if (chip->port)
1928                 of_iounmap(&op->resource[0], chip->port, 0x10);
1929
1930         return 0;
1931 }
1932
1933 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1934 {
1935         struct snd_cs4231 *cp = device->device_data;
1936
1937         return snd_cs4231_ebus_free(cp);
1938 }
1939
1940 static const struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1941         .dev_free       =       snd_cs4231_ebus_dev_free,
1942 };
1943
1944 static int snd_cs4231_ebus_create(struct snd_card *card,
1945                                   struct platform_device *op,
1946                                   int dev)
1947 {
1948         struct snd_cs4231 *chip = card->private_data;
1949         int err;
1950
1951         spin_lock_init(&chip->lock);
1952         spin_lock_init(&chip->c_dma.ebus_info.lock);
1953         spin_lock_init(&chip->p_dma.ebus_info.lock);
1954         mutex_init(&chip->mce_mutex);
1955         mutex_init(&chip->open_mutex);
1956         chip->flags |= CS4231_FLAG_EBUS;
1957         chip->op = op;
1958         memcpy(&chip->image, &snd_cs4231_original_image,
1959                sizeof(snd_cs4231_original_image));
1960         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
1961         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1962         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
1963         chip->c_dma.ebus_info.client_cookie = chip;
1964         chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
1965         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
1966         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1967         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
1968         chip->p_dma.ebus_info.client_cookie = chip;
1969         chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
1970
1971         chip->p_dma.prepare = _ebus_dma_prepare;
1972         chip->p_dma.enable = _ebus_dma_enable;
1973         chip->p_dma.request = _ebus_dma_request;
1974         chip->p_dma.address = _ebus_dma_addr;
1975
1976         chip->c_dma.prepare = _ebus_dma_prepare;
1977         chip->c_dma.enable = _ebus_dma_enable;
1978         chip->c_dma.request = _ebus_dma_request;
1979         chip->c_dma.address = _ebus_dma_addr;
1980
1981         chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
1982         chip->p_dma.ebus_info.regs =
1983                 of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
1984         chip->c_dma.ebus_info.regs =
1985                 of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
1986         if (!chip->port || !chip->p_dma.ebus_info.regs ||
1987             !chip->c_dma.ebus_info.regs) {
1988                 snd_cs4231_ebus_free(chip);
1989                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1990                 return -EIO;
1991         }
1992
1993         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
1994                 snd_cs4231_ebus_free(chip);
1995                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
1996                             dev);
1997                 return -EBUSY;
1998         }
1999         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2000                 snd_cs4231_ebus_free(chip);
2001                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2002                             dev);
2003                 return -EBUSY;
2004         }
2005
2006         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2007                 snd_cs4231_ebus_free(chip);
2008                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2009                             dev);
2010                 return -EBUSY;
2011         }
2012         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2013                 snd_cs4231_ebus_free(chip);
2014                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2015                 return -EBUSY;
2016         }
2017
2018         if (snd_cs4231_probe(chip) < 0) {
2019                 snd_cs4231_ebus_free(chip);
2020                 return -ENODEV;
2021         }
2022         snd_cs4231_init(chip);
2023
2024         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2025                              chip, &snd_cs4231_ebus_dev_ops);
2026         if (err < 0) {
2027                 snd_cs4231_ebus_free(chip);
2028                 return err;
2029         }
2030
2031         return 0;
2032 }
2033
2034 static int cs4231_ebus_probe(struct platform_device *op)
2035 {
2036         struct snd_card *card;
2037         int err;
2038
2039         err = cs4231_attach_begin(op, &card);
2040         if (err)
2041                 return err;
2042
2043         sprintf(card->longname, "%s at 0x%llx, irq %d",
2044                 card->shortname,
2045                 op->resource[0].start,
2046                 op->archdata.irqs[0]);
2047
2048         err = snd_cs4231_ebus_create(card, op, dev);
2049         if (err < 0) {
2050                 snd_card_free(card);
2051                 return err;
2052         }
2053
2054         return cs4231_attach_finish(card);
2055 }
2056 #endif
2057
2058 static int cs4231_probe(struct platform_device *op)
2059 {
2060 #ifdef EBUS_SUPPORT
2061         if (of_node_name_eq(op->dev.of_node->parent, "ebus"))
2062                 return cs4231_ebus_probe(op);
2063 #endif
2064 #ifdef SBUS_SUPPORT
2065         if (of_node_name_eq(op->dev.of_node->parent, "sbus") ||
2066             of_node_name_eq(op->dev.of_node->parent, "sbi"))
2067                 return cs4231_sbus_probe(op);
2068 #endif
2069         return -ENODEV;
2070 }
2071
2072 static int cs4231_remove(struct platform_device *op)
2073 {
2074         struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
2075
2076         snd_card_free(chip->card);
2077
2078         return 0;
2079 }
2080
2081 static const struct of_device_id cs4231_match[] = {
2082         {
2083                 .name = "SUNW,CS4231",
2084         },
2085         {
2086                 .name = "audio",
2087                 .compatible = "SUNW,CS4231",
2088         },
2089         {},
2090 };
2091
2092 MODULE_DEVICE_TABLE(of, cs4231_match);
2093
2094 static struct platform_driver cs4231_driver = {
2095         .driver = {
2096                 .name = "audio",
2097                 .of_match_table = cs4231_match,
2098         },
2099         .probe          = cs4231_probe,
2100         .remove         = cs4231_remove,
2101 };
2102
2103 module_platform_driver(cs4231_driver);