sound/sparc/cs4231.c

   1 /*
   2  * Driver for CS4231 sound chips found on Sparcs.
   3  * Copyright (C) 2002 David S. Miller <davem@redhat.com>
   4  *
   5  * Based entirely upon drivers/sbus/audio/cs4231.c which is:
   6  * Copyright (C) 1996, 1997, 1998, 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@suse.cz>
   9  */
  10
  11 #include <linux/config.h>
  12 #include <linux/module.h>
  13 #include <linux/kernel.h>
  14 #include <linux/slab.h>
  15 #include <linux/delay.h>
  16 #include <linux/init.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/moduleparam.h>
  19
  20 #include <sound/driver.h>
  21 #include <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/info.h>
  24 #include <sound/control.h>
  25 #include <sound/timer.h>
  26 #include <sound/initval.h>
  27 #include <sound/pcm_params.h>
  28
  29 #include <asm/io.h>
  30 #include <asm/irq.h>
  31
  32 #ifdef CONFIG_SBUS
  33 #define SBUS_SUPPORT
  34 #endif
  35
  36 #ifdef SBUS_SUPPORT
  37 #include <asm/sbus.h>
  38 #endif
  39
  40 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
  41 #define EBUS_SUPPORT
  42 #endif
  43
  44 #ifdef EBUS_SUPPORT
  45 #include <linux/pci.h>
  46 #include <asm/ebus.h>
  47 #endif
  48
  49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  51 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  52
  53 module_param_array(index, int, NULL, 0444);
  54 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
  55 module_param_array(id, charp, NULL, 0444);
  56 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
  57 module_param_array(enable, bool, NULL, 0444);
  58 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
  59 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
  60 MODULE_DESCRIPTION("Sun CS4231");
  61 MODULE_LICENSE("GPL");
  62 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
  63
  64 typedef struct snd_cs4231 {
  65         spinlock_t              lock;
  66         void __iomem            *port;
  67 #ifdef EBUS_SUPPORT
  68         struct ebus_dma_info    eb2c;
  69         struct ebus_dma_info    eb2p;
  70 #endif
  71
  72         u32                     flags;
  73 #define CS4231_FLAG_EBUS        0x00000001
  74 #define CS4231_FLAG_PLAYBACK    0x00000002
  75 #define CS4231_FLAG_CAPTURE     0x00000004
  76
  77         snd_card_t              *card;
  78         snd_pcm_t               *pcm;
  79         snd_pcm_substream_t     *playback_substream;
  80         unsigned int            p_periods_sent;
  81         snd_pcm_substream_t     *capture_substream;
  82         unsigned int            c_periods_sent;
  83         snd_timer_t             *timer;
  84
  85         unsigned short mode;
  86 #define CS4231_MODE_NONE        0x0000
  87 #define CS4231_MODE_PLAY        0x0001
  88 #define CS4231_MODE_RECORD      0x0002
  89 #define CS4231_MODE_TIMER       0x0004
  90 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY|CS4231_MODE_RECORD|CS4231_MODE_TIMER)
  91
  92         unsigned char           image[32];      /* registers image */
  93         int                     mce_bit;
  94         int                     calibrate_mute;
  95         struct semaphore        mce_mutex;
  96         struct semaphore        open_mutex;
  97
  98         union {
  99 #ifdef SBUS_SUPPORT
 100                 struct sbus_dev         *sdev;
 101 #endif
 102 #ifdef EBUS_SUPPORT
 103                 struct pci_dev          *pdev;
 104 #endif
 105         } dev_u;
 106         unsigned int            irq[2];
 107         unsigned int            regs_size;
 108         struct snd_cs4231       *next;
 109 } cs4231_t;
 110
 111 static cs4231_t *cs4231_list;
 112
 113 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
 114  * now....  -DaveM
 115  */
 116
 117 /* IO ports */
 118
 119 #define CS4231P(chip, x)        ((chip)->port + c_d_c_CS4231##x)
 120
 121 /* XXX offsets are different than PC ISA chips... */
 122 #define c_d_c_CS4231REGSEL      0x0
 123 #define c_d_c_CS4231REG         0x4
 124 #define c_d_c_CS4231STATUS      0x8
 125 #define c_d_c_CS4231PIO         0xc
 126
 127 /* codec registers */
 128
 129 #define CS4231_LEFT_INPUT       0x00    /* left input control */
 130 #define CS4231_RIGHT_INPUT      0x01    /* right input control */
 131 #define CS4231_AUX1_LEFT_INPUT  0x02    /* left AUX1 input control */
 132 #define CS4231_AUX1_RIGHT_INPUT 0x03    /* right AUX1 input control */
 133 #define CS4231_AUX2_LEFT_INPUT  0x04    /* left AUX2 input control */
 134 #define CS4231_AUX2_RIGHT_INPUT 0x05    /* right AUX2 input control */
 135 #define CS4231_LEFT_OUTPUT      0x06    /* left output control register */
 136 #define CS4231_RIGHT_OUTPUT     0x07    /* right output control register */
 137 #define CS4231_PLAYBK_FORMAT    0x08    /* clock and data format - playback - bits 7-0 MCE */
 138 #define CS4231_IFACE_CTRL       0x09    /* interface control - bits 7-2 MCE */
 139 #define CS4231_PIN_CTRL         0x0a    /* pin control */
 140 #define CS4231_TEST_INIT        0x0b    /* test and initialization */
 141 #define CS4231_MISC_INFO        0x0c    /* miscellaneaous information */
 142 #define CS4231_LOOPBACK         0x0d    /* loopback control */
 143 #define CS4231_PLY_UPR_CNT      0x0e    /* playback upper base count */
 144 #define CS4231_PLY_LWR_CNT      0x0f    /* playback lower base count */
 145 #define CS4231_ALT_FEATURE_1    0x10    /* alternate #1 feature enable */
 146 #define CS4231_ALT_FEATURE_2    0x11    /* alternate #2 feature enable */
 147 #define CS4231_LEFT_LINE_IN     0x12    /* left line input control */
 148 #define CS4231_RIGHT_LINE_IN    0x13    /* right line input control */
 149 #define CS4231_TIMER_LOW        0x14    /* timer low byte */
 150 #define CS4231_TIMER_HIGH       0x15    /* timer high byte */
 151 #define CS4231_LEFT_MIC_INPUT   0x16    /* left MIC input control register (InterWave only) */
 152 #define CS4231_RIGHT_MIC_INPUT  0x17    /* right MIC input control register (InterWave only) */
 153 #define CS4236_EXT_REG          0x17    /* extended register access */
 154 #define CS4231_IRQ_STATUS       0x18    /* irq status register */
 155 #define CS4231_LINE_LEFT_OUTPUT 0x19    /* left line output control register (InterWave only) */
 156 #define CS4231_VERSION          0x19    /* CS4231(A) - version values */
 157 #define CS4231_MONO_CTRL        0x1a    /* mono input/output control */
 158 #define CS4231_LINE_RIGHT_OUTPUT 0x1b   /* right line output control register (InterWave only) */
 159 #define CS4235_LEFT_MASTER      0x1b    /* left master output control */
 160 #define CS4231_REC_FORMAT       0x1c    /* clock and data format - record - bits 7-0 MCE */
 161 #define CS4231_PLY_VAR_FREQ     0x1d    /* playback variable frequency */
 162 #define CS4235_RIGHT_MASTER     0x1d    /* right master output control */
 163 #define CS4231_REC_UPR_CNT      0x1e    /* record upper count */
 164 #define CS4231_REC_LWR_CNT      0x1f    /* record lower count */
 165
 166 /* definitions for codec register select port - CODECP( REGSEL ) */
 167
 168 #define CS4231_INIT             0x80    /* CODEC is initializing */
 169 #define CS4231_MCE              0x40    /* mode change enable */
 170 #define CS4231_TRD              0x20    /* transfer request disable */
 171
 172 /* definitions for codec status register - CODECP( STATUS ) */
 173
 174 #define CS4231_GLOBALIRQ        0x01    /* IRQ is active */
 175
 176 /* definitions for codec irq status */
 177
 178 #define CS4231_PLAYBACK_IRQ     0x10
 179 #define CS4231_RECORD_IRQ       0x20
 180 #define CS4231_TIMER_IRQ        0x40
 181 #define CS4231_ALL_IRQS         0x70
 182 #define CS4231_REC_UNDERRUN     0x08
 183 #define CS4231_REC_OVERRUN      0x04
 184 #define CS4231_PLY_OVERRUN      0x02
 185 #define CS4231_PLY_UNDERRUN     0x01
 186
 187 /* definitions for CS4231_LEFT_INPUT and CS4231_RIGHT_INPUT registers */
 188
 189 #define CS4231_ENABLE_MIC_GAIN  0x20
 190
 191 #define CS4231_MIXS_LINE        0x00
 192 #define CS4231_MIXS_AUX1        0x40
 193 #define CS4231_MIXS_MIC         0x80
 194 #define CS4231_MIXS_ALL         0xc0
 195
 196 /* definitions for clock and data format register - CS4231_PLAYBK_FORMAT */
 197
 198 #define CS4231_LINEAR_8         0x00    /* 8-bit unsigned data */
 199 #define CS4231_ALAW_8           0x60    /* 8-bit A-law companded */
 200 #define CS4231_ULAW_8           0x20    /* 8-bit U-law companded */
 201 #define CS4231_LINEAR_16        0x40    /* 16-bit twos complement data - little endian */
 202 #define CS4231_LINEAR_16_BIG    0xc0    /* 16-bit twos complement data - big endian */
 203 #define CS4231_ADPCM_16         0xa0    /* 16-bit ADPCM */
 204 #define CS4231_STEREO           0x10    /* stereo mode */
 205 /* bits 3-1 define frequency divisor */
 206 #define CS4231_XTAL1            0x00    /* 24.576 crystal */
 207 #define CS4231_XTAL2            0x01    /* 16.9344 crystal */
 208
 209 /* definitions for interface control register - CS4231_IFACE_CTRL */
 210
 211 #define CS4231_RECORD_PIO       0x80    /* record PIO enable */
 212 #define CS4231_PLAYBACK_PIO     0x40    /* playback PIO enable */
 213 #define CS4231_CALIB_MODE       0x18    /* calibration mode bits */
 214 #define CS4231_AUTOCALIB        0x08    /* auto calibrate */
 215 #define CS4231_SINGLE_DMA       0x04    /* use single DMA channel */
 216 #define CS4231_RECORD_ENABLE    0x02    /* record enable */
 217 #define CS4231_PLAYBACK_ENABLE  0x01    /* playback enable */
 218
 219 /* definitions for pin control register - CS4231_PIN_CTRL */
 220
 221 #define CS4231_IRQ_ENABLE       0x02    /* enable IRQ */
 222 #define CS4231_XCTL1            0x40    /* external control #1 */
 223 #define CS4231_XCTL0            0x80    /* external control #0 */
 224
 225 /* definitions for test and init register - CS4231_TEST_INIT */
 226
 227 #define CS4231_CALIB_IN_PROGRESS 0x20   /* auto calibrate in progress */
 228 #define CS4231_DMA_REQUEST      0x10    /* DMA request in progress */
 229
 230 /* definitions for misc control register - CS4231_MISC_INFO */
 231
 232 #define CS4231_MODE2            0x40    /* MODE 2 */
 233 #define CS4231_IW_MODE3         0x6c    /* MODE 3 - InterWave enhanced mode */
 234 #define CS4231_4236_MODE3       0xe0    /* MODE 3 - CS4236+ enhanced mode */
 235
 236 /* definitions for alternate feature 1 register - CS4231_ALT_FEATURE_1 */
 237
 238 #define CS4231_DACZ             0x01    /* zero DAC when underrun */
 239 #define CS4231_TIMER_ENABLE     0x40    /* codec timer enable */
 240 #define CS4231_OLB              0x80    /* output level bit */
 241
 242 /* SBUS DMA register defines.  */
 243
 244 #define APCCSR  0x10UL  /* APC DMA CSR */
 245 #define APCCVA  0x20UL  /* APC Capture DMA Address */
 246 #define APCCC   0x24UL  /* APC Capture Count */
 247 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
 248 #define APCCNC  0x2cUL  /* APC Capture Next Count */
 249 #define APCPVA  0x30UL  /* APC Play DMA Address */
 250 #define APCPC   0x34UL  /* APC Play Count */
 251 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
 252 #define APCPNC  0x3cUL  /* APC Play Next Count */
 253
 254 /* APCCSR bits */
 255
 256 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
 257 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
 258 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
 259 #define APC_GENL_INT    0x100000 /* General interrupt */
 260 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
 261 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
 262 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
 263 #define APC_XINT_GENL   0x10000  /* Error ext intr */
 264 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
 265 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
 266 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
 267 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
 268 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
 269 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
 270 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
 271 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
 272 #define APC_PPAUSE      0x80     /* Pause the play DMA */
 273 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
 274 #define APC_CDC_RESET   0x20     /* CODEC RESET */
 275 #define APC_PDMA_READY  0x08     /* Play DMA Go */
 276 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
 277 #define APC_CHIP_RESET  0x01     /* Reset the chip */
 278
 279 /* EBUS DMA register offsets  */
 280
 281 #define EBDMA_CSR       0x00UL  /* Control/Status */
 282 #define EBDMA_ADDR      0x04UL  /* DMA Address */
 283 #define EBDMA_COUNT     0x08UL  /* DMA Count */
 284
 285 /*
 286  *  Some variables
 287  */
 288
 289 static unsigned char freq_bits[14] = {
 290         /* 5510 */      0x00 | CS4231_XTAL2,
 291         /* 6620 */      0x0E | CS4231_XTAL2,
 292         /* 8000 */      0x00 | CS4231_XTAL1,
 293         /* 9600 */      0x0E | CS4231_XTAL1,
 294         /* 11025 */     0x02 | CS4231_XTAL2,
 295         /* 16000 */     0x02 | CS4231_XTAL1,
 296         /* 18900 */     0x04 | CS4231_XTAL2,
 297         /* 22050 */     0x06 | CS4231_XTAL2,
 298         /* 27042 */     0x04 | CS4231_XTAL1,
 299         /* 32000 */     0x06 | CS4231_XTAL1,
 300         /* 33075 */     0x0C | CS4231_XTAL2,
 301         /* 37800 */     0x08 | CS4231_XTAL2,
 302         /* 44100 */     0x0A | CS4231_XTAL2,
 303         /* 48000 */     0x0C | CS4231_XTAL1
 304 };
 305
 306 static unsigned int rates[14] = {
 307         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
 308         27042, 32000, 33075, 37800, 44100, 48000
 309 };
 310
 311 static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
 312         .count  = 14,
 313         .list   = rates,
 314 };
 315
 316 static int snd_cs4231_xrate(snd_pcm_runtime_t *runtime)
 317 {
 318         return snd_pcm_hw_constraint_list(runtime, 0,
 319                                           SNDRV_PCM_HW_PARAM_RATE,
 320                                           &hw_constraints_rates);
 321 }
 322
 323 static unsigned char snd_cs4231_original_image[32] =
 324 {
 325         0x00,                   /* 00/00 - lic */
 326         0x00,                   /* 01/01 - ric */
 327         0x9f,                   /* 02/02 - la1ic */
 328         0x9f,                   /* 03/03 - ra1ic */
 329         0x9f,                   /* 04/04 - la2ic */
 330         0x9f,                   /* 05/05 - ra2ic */
 331         0xbf,                   /* 06/06 - loc */
 332         0xbf,                   /* 07/07 - roc */
 333         0x20,                   /* 08/08 - pdfr */
 334         CS4231_AUTOCALIB,       /* 09/09 - ic */
 335         0x00,                   /* 0a/10 - pc */
 336         0x00,                   /* 0b/11 - ti */
 337         CS4231_MODE2,           /* 0c/12 - mi */
 338         0x00,                   /* 0d/13 - lbc */
 339         0x00,                   /* 0e/14 - pbru */
 340         0x00,                   /* 0f/15 - pbrl */
 341         0x80,                   /* 10/16 - afei */
 342         0x01,                   /* 11/17 - afeii */
 343         0x9f,                   /* 12/18 - llic */
 344         0x9f,                   /* 13/19 - rlic */
 345         0x00,                   /* 14/20 - tlb */
 346         0x00,                   /* 15/21 - thb */
 347         0x00,                   /* 16/22 - la3mic/reserved */
 348         0x00,                   /* 17/23 - ra3mic/reserved */
 349         0x00,                   /* 18/24 - afs */
 350         0x00,                   /* 19/25 - lamoc/version */
 351         0x00,                   /* 1a/26 - mioc */
 352         0x00,                   /* 1b/27 - ramoc/reserved */
 353         0x20,                   /* 1c/28 - cdfr */
 354         0x00,                   /* 1d/29 - res4 */
 355         0x00,                   /* 1e/30 - cbru */
 356         0x00,                   /* 1f/31 - cbrl */
 357 };
 358
 359 static u8 __cs4231_readb(cs4231_t *cp, void __iomem *reg_addr)
 360 {
 361 #ifdef EBUS_SUPPORT
 362         if (cp->flags & CS4231_FLAG_EBUS) {
 363                 return readb(reg_addr);
 364         } else {
 365 #endif
 366 #ifdef SBUS_SUPPORT
 367                 return sbus_readb(reg_addr);
 368 #endif
 369 #ifdef EBUS_SUPPORT
 370         }
 371 #endif
 372 }
 373
 374 static void __cs4231_writeb(cs4231_t *cp, u8 val, void __iomem *reg_addr)
 375 {
 376 #ifdef EBUS_SUPPORT
 377         if (cp->flags & CS4231_FLAG_EBUS) {
 378                 return writeb(val, reg_addr);
 379         } else {
 380 #endif
 381 #ifdef SBUS_SUPPORT
 382                 return sbus_writeb(val, reg_addr);
 383 #endif
 384 #ifdef EBUS_SUPPORT
 385         }
 386 #endif
 387 }
 388
 389 /*
 390  *  Basic I/O functions
 391  */
 392
 393 static void snd_cs4231_outm(cs4231_t *chip, unsigned char reg,
 394                      unsigned char mask, unsigned char value)
 395 {
 396         int timeout;
 397         unsigned char tmp;
 398
 399         for (timeout = 250;
 400              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
 401              timeout--)
 402                 udelay(100);
 403 #ifdef CONFIG_SND_DEBUG
 404         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
 405                 snd_printk("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 406 #endif
 407         if (chip->calibrate_mute) {
 408                 chip->image[reg] &= mask;
 409                 chip->image[reg] |= value;
 410         } else {
 411                 __cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
 412                 mb();
 413                 tmp = (chip->image[reg] & mask) | value;
 414                 __cs4231_writeb(chip, tmp, CS4231P(chip, REG));
 415                 chip->image[reg] = tmp;
 416                 mb();
 417         }
 418 }
 419
 420 static void snd_cs4231_dout(cs4231_t *chip, unsigned char reg, unsigned char value)
 421 {
 422         int timeout;
 423
 424         for (timeout = 250;
 425              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
 426              timeout--)
 427                 udelay(100);
 428         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
 429         __cs4231_writeb(chip, value, CS4231P(chip, REG));
 430         mb();
 431 }
 432
 433 static void snd_cs4231_out(cs4231_t *chip, unsigned char reg, unsigned char value)
 434 {
 435         int timeout;
 436
 437         for (timeout = 250;
 438              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
 439              timeout--)
 440                 udelay(100);
 441 #ifdef CONFIG_SND_DEBUG
 442         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
 443                 snd_printk("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
 444 #endif
 445         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
 446         __cs4231_writeb(chip, value, CS4231P(chip, REG));
 447         chip->image[reg] = value;
 448         mb();
 449 #if 0
 450         printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
 451 #endif
 452 }
 453
 454 static unsigned char snd_cs4231_in(cs4231_t *chip, unsigned char reg)
 455 {
 456         int timeout;
 457         unsigned char ret;
 458
 459         for (timeout = 250;
 460              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
 461              timeout--)
 462                 udelay(100);
 463 #ifdef CONFIG_SND_DEBUG
 464         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
 465                 snd_printk("in: auto calibration time out - reg = 0x%x\n", reg);
 466 #endif
 467         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
 468         mb();
 469         ret = __cs4231_readb(chip, CS4231P(chip, REG));
 470 #if 0
 471         printk("codec in - reg 0x%x = 0x%x\n", chip->mce_bit | reg, ret);
 472 #endif
 473         return ret;
 474 }
 475
 476 #if 0
 477
 478 static void snd_cs4231_debug(cs4231_t *chip)
 479 {
 480         printk("CS4231 REGS:      INDEX = 0x%02x  ",
 481                __cs4231_readb(chip, CS4231P(chip, REGSEL)));
 482         printk("                 STATUS = 0x%02x\n",
 483                __cs4231_readb(chip, CS4231P(chip, STATUS)));
 484         printk("  0x00: left input      = 0x%02x  ", snd_cs4231_in(chip, 0x00));
 485         printk("  0x10: alt 1 (CFIG 2)  = 0x%02x\n", snd_cs4231_in(chip, 0x10));
 486         printk("  0x01: right input     = 0x%02x  ", snd_cs4231_in(chip, 0x01));
 487         printk("  0x11: alt 2 (CFIG 3)  = 0x%02x\n", snd_cs4231_in(chip, 0x11));
 488         printk("  0x02: GF1 left input  = 0x%02x  ", snd_cs4231_in(chip, 0x02));
 489         printk("  0x12: left line in    = 0x%02x\n", snd_cs4231_in(chip, 0x12));
 490         printk("  0x03: GF1 right input = 0x%02x  ", snd_cs4231_in(chip, 0x03));
 491         printk("  0x13: right line in   = 0x%02x\n", snd_cs4231_in(chip, 0x13));
 492         printk("  0x04: CD left input   = 0x%02x  ", snd_cs4231_in(chip, 0x04));
 493         printk("  0x14: timer low       = 0x%02x\n", snd_cs4231_in(chip, 0x14));
 494         printk("  0x05: CD right input  = 0x%02x  ", snd_cs4231_in(chip, 0x05));
 495         printk("  0x15: timer high      = 0x%02x\n", snd_cs4231_in(chip, 0x15));
 496         printk("  0x06: left output     = 0x%02x  ", snd_cs4231_in(chip, 0x06));
 497         printk("  0x16: left MIC (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x16));
 498         printk("  0x07: right output    = 0x%02x  ", snd_cs4231_in(chip, 0x07));
 499         printk("  0x17: right MIC (PnP) = 0x%02x\n", snd_cs4231_in(chip, 0x17));
 500         printk("  0x08: playback format = 0x%02x  ", snd_cs4231_in(chip, 0x08));
 501         printk("  0x18: IRQ status      = 0x%02x\n", snd_cs4231_in(chip, 0x18));
 502         printk("  0x09: iface (CFIG 1)  = 0x%02x  ", snd_cs4231_in(chip, 0x09));
 503         printk("  0x19: left line out   = 0x%02x\n", snd_cs4231_in(chip, 0x19));
 504         printk("  0x0a: pin control     = 0x%02x  ", snd_cs4231_in(chip, 0x0a));
 505         printk("  0x1a: mono control    = 0x%02x\n", snd_cs4231_in(chip, 0x1a));
 506         printk("  0x0b: init & status   = 0x%02x  ", snd_cs4231_in(chip, 0x0b));
 507         printk("  0x1b: right line out  = 0x%02x\n", snd_cs4231_in(chip, 0x1b));
 508         printk("  0x0c: revision & mode = 0x%02x  ", snd_cs4231_in(chip, 0x0c));
 509         printk("  0x1c: record format   = 0x%02x\n", snd_cs4231_in(chip, 0x1c));
 510         printk("  0x0d: loopback        = 0x%02x  ", snd_cs4231_in(chip, 0x0d));
 511         printk("  0x1d: var freq (PnP)  = 0x%02x\n", snd_cs4231_in(chip, 0x1d));
 512         printk("  0x0e: ply upr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0e));
 513         printk("  0x1e: rec upr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1e));
 514         printk("  0x0f: ply lwr count   = 0x%02x  ", snd_cs4231_in(chip, 0x0f));
 515         printk("  0x1f: rec lwr count   = 0x%02x\n", snd_cs4231_in(chip, 0x1f));
 516 }
 517
 518 #endif
 519
 520 /*
 521  *  CS4231 detection / MCE routines
 522  */
 523
 524 static void snd_cs4231_busy_wait(cs4231_t *chip)
 525 {
 526         int timeout;
 527
 528         /* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
 529         for (timeout = 5; timeout > 0; timeout--)
 530                 __cs4231_readb(chip, CS4231P(chip, REGSEL));
 531         /* end of cleanup sequence */
 532         for (timeout = 250;
 533              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
 534              timeout--)
 535                 udelay(100);
 536 }
 537
 538 static void snd_cs4231_mce_up(cs4231_t *chip)
 539 {
 540         unsigned long flags;
 541         int timeout;
 542
 543         spin_lock_irqsave(&chip->lock, flags);
 544         for (timeout = 250; timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT); timeout--)
 545                 udelay(100);
 546 #ifdef CONFIG_SND_DEBUG
 547         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
 548                 snd_printk("mce_up - auto calibration time out (0)\n");
 549 #endif
 550         chip->mce_bit |= CS4231_MCE;
 551         timeout = __cs4231_readb(chip, CS4231P(chip, REGSEL));
 552         if (timeout == 0x80)
 553                 snd_printk("mce_up [%p]: serious init problem - codec still busy\n", chip->port);
 554         if (!(timeout & CS4231_MCE))
 555                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f), CS4231P(chip, REGSEL));
 556         spin_unlock_irqrestore(&chip->lock, flags);
 557 }
 558
 559 static void snd_cs4231_mce_down(cs4231_t *chip)
 560 {
 561         unsigned long flags;
 562         int timeout;
 563
 564         spin_lock_irqsave(&chip->lock, flags);
 565         snd_cs4231_busy_wait(chip);
 566 #if 0
 567         printk("(1) timeout = %i\n", timeout);
 568 #endif
 569 #ifdef CONFIG_SND_DEBUG
 570         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
 571                 snd_printk("mce_down [%p] - auto calibration time out (0)\n", CS4231P(chip, REGSEL));
 572 #endif
 573         chip->mce_bit &= ~CS4231_MCE;
 574         timeout = __cs4231_readb(chip, CS4231P(chip, REGSEL));
 575         __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f), CS4231P(chip, REGSEL));
 576         if (timeout == 0x80)
 577                 snd_printk("mce_down [%p]: serious init problem - codec still busy\n", chip->port);
 578         if ((timeout & CS4231_MCE) == 0) {
 579                 spin_unlock_irqrestore(&chip->lock, flags);
 580                 return;
 581         }
 582         snd_cs4231_busy_wait(chip);
 583
 584         /* calibration process */
 585
 586         for (timeout = 500; timeout > 0 && (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0; timeout--)
 587                 udelay(100);
 588         if ((snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0) {
 589                 snd_printd("cs4231_mce_down - auto calibration time out (1)\n");
 590                 spin_unlock_irqrestore(&chip->lock, flags);
 591                 return;
 592         }
 593 #if 0
 594         printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
 595 #endif
 596         /* in 10ms increments, check condition, up to 250ms */
 597         timeout = 25;
 598         while (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) {
 599                 spin_unlock_irqrestore(&chip->lock, flags);
 600                 if (--timeout < 0) {
 601                         snd_printk("mce_down - auto calibration time out (2)\n");
 602                         return;
 603                 }
 604                 msleep(10);
 605                 spin_lock_irqsave(&chip->lock, flags);
 606         }
 607 #if 0
 608         printk("(3) jiffies = %li\n", jiffies);
 609 #endif
 610         /* in 10ms increments, check condition, up to 100ms */
 611         timeout = 10;
 612         while (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT) {
 613                 spin_unlock_irqrestore(&chip->lock, flags);
 614                 if (--timeout < 0) {
 615                         snd_printk("mce_down - auto calibration time out (3)\n");
 616                         return;
 617                 }
 618                 msleep(10);
 619                 spin_lock_irqsave(&chip->lock, flags);
 620         }
 621         spin_unlock_irqrestore(&chip->lock, flags);
 622 #if 0
 623         printk("(4) jiffies = %li\n", jiffies);
 624         snd_printk("mce_down - exit = 0x%x\n", __cs4231_readb(chip, CS4231P(chip, REGSEL)));
 625 #endif
 626 }
 627
 628 #if 0 /* Unused for now... */
 629 static unsigned int snd_cs4231_get_count(unsigned char format, unsigned int size)
 630 {
 631         switch (format & 0xe0) {
 632         case CS4231_LINEAR_16:
 633         case CS4231_LINEAR_16_BIG:
 634                 size >>= 1;
 635                 break;
 636         case CS4231_ADPCM_16:
 637                 return size >> 2;
 638         }
 639         if (format & CS4231_STEREO)
 640                 size >>= 1;
 641         return size;
 642 }
 643 #endif
 644
 645 #ifdef EBUS_SUPPORT
 646 static void snd_cs4231_ebus_advance_dma(struct ebus_dma_info *p, snd_pcm_substream_t *substream, unsigned int *periods_sent)
 647 {
 648         snd_pcm_runtime_t *runtime = substream->runtime;
 649
 650         while (1) {
 651                 unsigned int dma_size = snd_pcm_lib_period_bytes(substream);
 652                 unsigned int offset = dma_size * (*periods_sent);
 653
 654                 if (dma_size >= (1 << 24))
 655                         BUG();
 656
 657                 if (ebus_dma_request(p, runtime->dma_addr + offset, dma_size))
 658                         return;
 659 #if 0
 660                 printk("ebus_advance: Sent period %u (size[%x] offset[%x])\n",
 661                        (*periods_sent), dma_size, offset);
 662 #endif
 663                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 664         }
 665 }
 666 #endif
 667
 668 static void cs4231_dma_trigger(cs4231_t *chip, unsigned int what, int on)
 669 {
 670 #ifdef EBUS_SUPPORT
 671         if (chip->flags & CS4231_FLAG_EBUS) {
 672                 if (what & CS4231_PLAYBACK_ENABLE) {
 673                         if (on) {
 674                                 ebus_dma_prepare(&chip->eb2p, 0);
 675                                 ebus_dma_enable(&chip->eb2p, 1);
 676                                 snd_cs4231_ebus_advance_dma(&chip->eb2p,
 677                                         chip->playback_substream,
 678                                         &chip->p_periods_sent);
 679                         } else {
 680                                 ebus_dma_enable(&chip->eb2p, 0);
 681                         }
 682                 }
 683                 if (what & CS4231_RECORD_ENABLE) {
 684                         if (on) {
 685                                 ebus_dma_prepare(&chip->eb2c, 1);
 686                                 ebus_dma_enable(&chip->eb2c, 1);
 687                                 snd_cs4231_ebus_advance_dma(&chip->eb2c,
 688                                         chip->capture_substream,
 689                                         &chip->c_periods_sent);
 690                         } else {
 691                                 ebus_dma_enable(&chip->eb2c, 0);
 692                         }
 693                 }
 694         } else {
 695 #endif
 696 #ifdef SBUS_SUPPORT
 697 #endif
 698 #ifdef EBUS_SUPPORT
 699         }
 700 #endif
 701 }
 702
 703 static int snd_cs4231_trigger(snd_pcm_substream_t *substream, int cmd)
 704 {
 705         cs4231_t *chip = snd_pcm_substream_chip(substream);
 706         int result = 0;
 707
 708         switch (cmd) {
 709         case SNDRV_PCM_TRIGGER_START:
 710         case SNDRV_PCM_TRIGGER_STOP:
 711         {
 712                 unsigned int what = 0;
 713                 snd_pcm_substream_t *s;
 714                 struct list_head *pos;
 715                 unsigned long flags;
 716
 717                 snd_pcm_group_for_each(pos, substream) {
 718                         s = snd_pcm_group_substream_entry(pos);
 719                         if (s == chip->playback_substream) {
 720                                 what |= CS4231_PLAYBACK_ENABLE;
 721                                 snd_pcm_trigger_done(s, substream);
 722                         } else if (s == chip->capture_substream) {
 723                                 what |= CS4231_RECORD_ENABLE;
 724                                 snd_pcm_trigger_done(s, substream);
 725                         }
 726                 }
 727
 728 #if 0
 729                 printk("TRIGGER: what[%x] on(%d)\n",
 730                        what, (cmd == SNDRV_PCM_TRIGGER_START));
 731 #endif
 732
 733                 spin_lock_irqsave(&chip->lock, flags);
 734                 if (cmd == SNDRV_PCM_TRIGGER_START) {
 735                         cs4231_dma_trigger(chip, what, 1);
 736                         chip->image[CS4231_IFACE_CTRL] |= what;
 737                         if (what & CS4231_PLAYBACK_ENABLE) {
 738                                 snd_cs4231_out(chip, CS4231_PLY_LWR_CNT, 0xff);
 739                                 snd_cs4231_out(chip, CS4231_PLY_UPR_CNT, 0xff);
 740                         }
 741                         if (what & CS4231_RECORD_ENABLE) {
 742                                 snd_cs4231_out(chip, CS4231_REC_LWR_CNT, 0xff);
 743                                 snd_cs4231_out(chip, CS4231_REC_UPR_CNT, 0xff);
 744                         }
 745                 } else {
 746                         cs4231_dma_trigger(chip, what, 0);
 747                         chip->image[CS4231_IFACE_CTRL] &= ~what;
 748                 }
 749                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 750                                chip->image[CS4231_IFACE_CTRL]);
 751                 spin_unlock_irqrestore(&chip->lock, flags);
 752                 break;
 753         }
 754         default:
 755                 result = -EINVAL;
 756                 break;
 757         }
 758 #if 0
 759         snd_cs4231_debug(chip);
 760 #endif
 761         return result;
 762 }
 763
 764 /*
 765  *  CODEC I/O
 766  */
 767
 768 static unsigned char snd_cs4231_get_rate(unsigned int rate)
 769 {
 770         int i;
 771
 772         for (i = 0; i < 14; i++)
 773                 if (rate == rates[i])
 774                         return freq_bits[i];
 775         // snd_BUG();
 776         return freq_bits[13];
 777 }
 778
 779 static unsigned char snd_cs4231_get_format(cs4231_t *chip, int format, int channels)
 780 {
 781         unsigned char rformat;
 782
 783         rformat = CS4231_LINEAR_8;
 784         switch (format) {
 785         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = CS4231_ULAW_8; break;
 786         case SNDRV_PCM_FORMAT_A_LAW:    rformat = CS4231_ALAW_8; break;
 787         case SNDRV_PCM_FORMAT_S16_LE:   rformat = CS4231_LINEAR_16; break;
 788         case SNDRV_PCM_FORMAT_S16_BE:   rformat = CS4231_LINEAR_16_BIG; break;
 789         case SNDRV_PCM_FORMAT_IMA_ADPCM:        rformat = CS4231_ADPCM_16; break;
 790         }
 791         if (channels > 1)
 792                 rformat |= CS4231_STEREO;
 793 #if 0
 794         snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
 795 #endif
 796         return rformat;
 797 }
 798
 799 static void snd_cs4231_calibrate_mute(cs4231_t *chip, int mute)
 800 {
 801         unsigned long flags;
 802
 803         mute = mute ? 1 : 0;
 804         spin_lock_irqsave(&chip->lock, flags);
 805         if (chip->calibrate_mute == mute) {
 806                 spin_unlock_irqrestore(&chip->lock, flags);
 807                 return;
 808         }
 809         if (!mute) {
 810                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 811                                 chip->image[CS4231_LEFT_INPUT]);
 812                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 813                                 chip->image[CS4231_RIGHT_INPUT]);
 814                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
 815                                 chip->image[CS4231_LOOPBACK]);
 816         }
 817         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 818                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 819         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 820                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 821         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 822                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 823         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 824                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 825         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 826                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 827         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 828                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 829         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 830                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 831         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 832                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 833         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 834                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 835         chip->calibrate_mute = mute;
 836         spin_unlock_irqrestore(&chip->lock, flags);
 837 }
 838
 839 static void snd_cs4231_playback_format(cs4231_t *chip, snd_pcm_hw_params_t *params,
 840                                        unsigned char pdfr)
 841 {
 842         unsigned long flags;
 843
 844         down(&chip->mce_mutex);
 845         snd_cs4231_calibrate_mute(chip, 1);
 846
 847         snd_cs4231_mce_up(chip);
 848
 849         spin_lock_irqsave(&chip->lock, flags);
 850         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 851                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 852                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 853                        pdfr);
 854         spin_unlock_irqrestore(&chip->lock, flags);
 855
 856         snd_cs4231_mce_down(chip);
 857
 858         snd_cs4231_calibrate_mute(chip, 0);
 859         up(&chip->mce_mutex);
 860 }
 861
 862 static void snd_cs4231_capture_format(cs4231_t *chip, snd_pcm_hw_params_t *params,
 863                                       unsigned char cdfr)
 864 {
 865         unsigned long flags;
 866
 867         down(&chip->mce_mutex);
 868         snd_cs4231_calibrate_mute(chip, 1);
 869
 870         snd_cs4231_mce_up(chip);
 871
 872         spin_lock_irqsave(&chip->lock, flags);
 873         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 874                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 875                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 876                                (cdfr & 0x0f));
 877                 spin_unlock_irqrestore(&chip->lock, flags);
 878                 snd_cs4231_mce_down(chip);
 879                 snd_cs4231_mce_up(chip);
 880                 spin_lock_irqsave(&chip->lock, flags);
 881         }
 882         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 883         spin_unlock_irqrestore(&chip->lock, flags);
 884
 885         snd_cs4231_mce_down(chip);
 886
 887         snd_cs4231_calibrate_mute(chip, 0);
 888         up(&chip->mce_mutex);
 889 }
 890
 891 /*
 892  *  Timer interface
 893  */
 894
 895 static unsigned long snd_cs4231_timer_resolution(snd_timer_t *timer)
 896 {
 897         cs4231_t *chip = snd_timer_chip(timer);
 898
 899         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 900 }
 901
 902 static int snd_cs4231_timer_start(snd_timer_t *timer)
 903 {
 904         unsigned long flags;
 905         unsigned int ticks;
 906         cs4231_t *chip = snd_timer_chip(timer);
 907
 908         spin_lock_irqsave(&chip->lock, flags);
 909         ticks = timer->sticks;
 910         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 911             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 912             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 913                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 914                                chip->image[CS4231_TIMER_HIGH] =
 915                                (unsigned char) (ticks >> 8));
 916                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
 917                                chip->image[CS4231_TIMER_LOW] =
 918                                (unsigned char) ticks);
 919                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 920                                chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
 921         }
 922         spin_unlock_irqrestore(&chip->lock, flags);
 923
 924         return 0;
 925 }
 926
 927 static int snd_cs4231_timer_stop(snd_timer_t *timer)
 928 {
 929         unsigned long flags;
 930         cs4231_t *chip = snd_timer_chip(timer);
 931
 932         spin_lock_irqsave(&chip->lock, flags);
 933         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 934                        chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
 935         spin_unlock_irqrestore(&chip->lock, flags);
 936
 937         return 0;
 938 }
 939
 940 static void snd_cs4231_init(cs4231_t *chip)
 941 {
 942         unsigned long flags;
 943
 944         snd_cs4231_mce_down(chip);
 945
 946 #ifdef SNDRV_DEBUG_MCE
 947         snd_printk("init: (1)\n");
 948 #endif
 949         snd_cs4231_mce_up(chip);
 950         spin_lock_irqsave(&chip->lock, flags);
 951         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 952                                             CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
 953                                             CS4231_CALIB_MODE);
 954         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 955         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 956         spin_unlock_irqrestore(&chip->lock, flags);
 957         snd_cs4231_mce_down(chip);
 958
 959 #ifdef SNDRV_DEBUG_MCE
 960         snd_printk("init: (2)\n");
 961 #endif
 962
 963         snd_cs4231_mce_up(chip);
 964         spin_lock_irqsave(&chip->lock, flags);
 965         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
 966         spin_unlock_irqrestore(&chip->lock, flags);
 967         snd_cs4231_mce_down(chip);
 968
 969 #ifdef SNDRV_DEBUG_MCE
 970         snd_printk("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
 971 #endif
 972
 973         spin_lock_irqsave(&chip->lock, flags);
 974         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
 975         spin_unlock_irqrestore(&chip->lock, flags);
 976
 977         snd_cs4231_mce_up(chip);
 978         spin_lock_irqsave(&chip->lock, flags);
 979         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
 980         spin_unlock_irqrestore(&chip->lock, flags);
 981         snd_cs4231_mce_down(chip);
 982
 983 #ifdef SNDRV_DEBUG_MCE
 984         snd_printk("init: (4)\n");
 985 #endif
 986
 987         snd_cs4231_mce_up(chip);
 988         spin_lock_irqsave(&chip->lock, flags);
 989         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 990         spin_unlock_irqrestore(&chip->lock, flags);
 991         snd_cs4231_mce_down(chip);
 992
 993 #ifdef SNDRV_DEBUG_MCE
 994         snd_printk("init: (5)\n");
 995 #endif
 996 }
 997
 998 static int snd_cs4231_open(cs4231_t *chip, unsigned int mode)
 999 {
1000         unsigned long flags;
1001
1002         down(&chip->open_mutex);
1003         if ((chip->mode & mode)) {
1004                 up(&chip->open_mutex);
1005                 return -EAGAIN;
1006         }
1007         if (chip->mode & CS4231_MODE_OPEN) {
1008                 chip->mode |= mode;
1009                 up(&chip->open_mutex);
1010                 return 0;
1011         }
1012         /* ok. now enable and ack CODEC IRQ */
1013         spin_lock_irqsave(&chip->lock, flags);
1014         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
1015                        CS4231_RECORD_IRQ |
1016                        CS4231_TIMER_IRQ);
1017         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
1018         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1019         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1020
1021         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
1022                        CS4231_RECORD_IRQ |
1023                        CS4231_TIMER_IRQ);
1024         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
1025         spin_unlock_irqrestore(&chip->lock, flags);
1026
1027         chip->mode = mode;
1028         up(&chip->open_mutex);
1029         return 0;
1030 }
1031
1032 static void snd_cs4231_close(cs4231_t *chip, unsigned int mode)
1033 {
1034         unsigned long flags;
1035
1036         down(&chip->open_mutex);
1037         chip->mode &= ~mode;
1038         if (chip->mode & CS4231_MODE_OPEN) {
1039                 up(&chip->open_mutex);
1040                 return;
1041         }
1042         snd_cs4231_calibrate_mute(chip, 1);
1043
1044         /* disable IRQ */
1045         spin_lock_irqsave(&chip->lock, flags);
1046         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
1047         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1048         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1049
1050         /* now disable record & playback */
1051
1052         if (chip->image[CS4231_IFACE_CTRL] &
1053             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
1054              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
1055                 spin_unlock_irqrestore(&chip->lock, flags);
1056                 snd_cs4231_mce_up(chip);
1057                 spin_lock_irqsave(&chip->lock, flags);
1058                 chip->image[CS4231_IFACE_CTRL] &=
1059                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
1060                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
1061                 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
1062                 spin_unlock_irqrestore(&chip->lock, flags);
1063                 snd_cs4231_mce_down(chip);
1064                 spin_lock_irqsave(&chip->lock, flags);
1065         }
1066
1067         /* clear IRQ again */
1068         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
1069         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1070         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1071         spin_unlock_irqrestore(&chip->lock, flags);
1072
1073         snd_cs4231_calibrate_mute(chip, 0);
1074
1075         chip->mode = 0;
1076         up(&chip->open_mutex);
1077 }
1078
1079 /*
1080  *  timer open/close
1081  */
1082
1083 static int snd_cs4231_timer_open(snd_timer_t *timer)
1084 {
1085         cs4231_t *chip = snd_timer_chip(timer);
1086         snd_cs4231_open(chip, CS4231_MODE_TIMER);
1087         return 0;
1088 }
1089
1090 static int snd_cs4231_timer_close(snd_timer_t * timer)
1091 {
1092         cs4231_t *chip = snd_timer_chip(timer);
1093         snd_cs4231_close(chip, CS4231_MODE_TIMER);
1094         return 0;
1095 }
1096
1097 static struct _snd_timer_hardware snd_cs4231_timer_table =
1098 {
1099         .flags          =       SNDRV_TIMER_HW_AUTO,
1100         .resolution     =       9945,
1101         .ticks          =       65535,
1102         .open           =       snd_cs4231_timer_open,
1103         .close          =       snd_cs4231_timer_close,
1104         .c_resolution   =       snd_cs4231_timer_resolution,
1105         .start          =       snd_cs4231_timer_start,
1106         .stop           =       snd_cs4231_timer_stop,
1107 };
1108
1109 /*
1110  *  ok.. exported functions..
1111  */
1112
1113 static int snd_cs4231_playback_hw_params(snd_pcm_substream_t *substream,
1114                                          snd_pcm_hw_params_t *hw_params)
1115 {
1116         cs4231_t *chip = snd_pcm_substream_chip(substream);
1117         unsigned char new_pdfr;
1118         int err;
1119
1120         if ((err = snd_pcm_lib_malloc_pages(substream,
1121                                             params_buffer_bytes(hw_params))) < 0)
1122                 return err;
1123         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
1124                                          params_channels(hw_params)) |
1125                 snd_cs4231_get_rate(params_rate(hw_params));
1126         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
1127
1128         return 0;
1129 }
1130
1131 static int snd_cs4231_playback_hw_free(snd_pcm_substream_t *substream)
1132 {
1133         return snd_pcm_lib_free_pages(substream);
1134 }
1135
1136 static int snd_cs4231_playback_prepare(snd_pcm_substream_t *substream)
1137 {
1138         cs4231_t *chip = snd_pcm_substream_chip(substream);
1139         unsigned long flags;
1140
1141         spin_lock_irqsave(&chip->lock, flags);
1142         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
1143                                             CS4231_PLAYBACK_PIO);
1144         spin_unlock_irqrestore(&chip->lock, flags);
1145
1146         return 0;
1147 }
1148
1149 static int snd_cs4231_capture_hw_params(snd_pcm_substream_t *substream,
1150                                         snd_pcm_hw_params_t *hw_params)
1151 {
1152         cs4231_t *chip = snd_pcm_substream_chip(substream);
1153         unsigned char new_cdfr;
1154         int err;
1155
1156         if ((err = snd_pcm_lib_malloc_pages(substream,
1157                                             params_buffer_bytes(hw_params))) < 0)
1158                 return err;
1159         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
1160                                          params_channels(hw_params)) |
1161                 snd_cs4231_get_rate(params_rate(hw_params));
1162         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
1163
1164         return 0;
1165 }
1166
1167 static int snd_cs4231_capture_hw_free(snd_pcm_substream_t *substream)
1168 {
1169         return snd_pcm_lib_free_pages(substream);
1170 }
1171
1172 static int snd_cs4231_capture_prepare(snd_pcm_substream_t *substream)
1173 {
1174         cs4231_t *chip = snd_pcm_substream_chip(substream);
1175         unsigned long flags;
1176
1177         spin_lock_irqsave(&chip->lock, flags);
1178         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
1179                                             CS4231_RECORD_PIO);
1180
1181         spin_unlock_irqrestore(&chip->lock, flags);
1182
1183         return 0;
1184 }
1185
1186 static void snd_cs4231_overrange(cs4231_t *chip)
1187 {
1188         unsigned long flags;
1189         unsigned char res;
1190
1191         spin_lock_irqsave(&chip->lock, flags);
1192         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
1193         spin_unlock_irqrestore(&chip->lock, flags);
1194
1195         if (res & (0x08 | 0x02))        /* detect overrange only above 0dB; may be user selectable? */
1196                 chip->capture_substream->runtime->overrange++;
1197 }
1198
1199 static void snd_cs4231_generic_interrupt(cs4231_t *chip)
1200 {
1201         unsigned long flags;
1202         unsigned char status;
1203
1204         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1205         if (!status)
1206                 return;
1207
1208         if (status & CS4231_TIMER_IRQ) {
1209                 if (chip->timer)
1210                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1211         }
1212         if (status & CS4231_PLAYBACK_IRQ)
1213                 snd_pcm_period_elapsed(chip->playback_substream);
1214         if (status & CS4231_RECORD_IRQ) {
1215                 snd_cs4231_overrange(chip);
1216                 snd_pcm_period_elapsed(chip->capture_substream);
1217         }
1218
1219         /* ACK the CS4231 interrupt. */
1220         spin_lock_irqsave(&chip->lock, flags);
1221         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1222         spin_unlock_irqrestore(&chip->lock, flags);
1223 }
1224
1225 #ifdef SBUS_SUPPORT
1226 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1227 {
1228         cs4231_t *chip = dev_id;
1229         u32 csr;
1230
1231         csr = sbus_readl(chip->port + APCCSR);
1232         if (!(csr & (APC_INT_PENDING |
1233                      APC_PLAY_INT |
1234                      APC_CAPT_INT |
1235                      APC_GENL_INT |
1236                      APC_XINT_PEMP |
1237                      APC_XINT_CEMP)))
1238                 return IRQ_NONE;
1239
1240         /* ACK the APC interrupt. */
1241         sbus_writel(csr, chip->port + APCCSR);
1242
1243         snd_cs4231_generic_interrupt(chip);
1244
1245         return IRQ_HANDLED;
1246 }
1247 #endif
1248
1249 #ifdef EBUS_SUPPORT
1250 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event, void *cookie)
1251 {
1252         cs4231_t *chip = cookie;
1253
1254         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
1255                 snd_pcm_period_elapsed(chip->playback_substream);
1256                 snd_cs4231_ebus_advance_dma(p, chip->playback_substream,
1257                                             &chip->p_periods_sent);
1258         }
1259 }
1260
1261 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p, int event, void *cookie)
1262 {
1263         cs4231_t *chip = cookie;
1264
1265         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
1266                 snd_pcm_period_elapsed(chip->capture_substream);
1267                 snd_cs4231_ebus_advance_dma(p, chip->capture_substream,
1268                                             &chip->c_periods_sent);
1269         }
1270 }
1271 #endif
1272
1273 static snd_pcm_uframes_t snd_cs4231_playback_pointer(snd_pcm_substream_t *substream)
1274 {
1275         cs4231_t *chip = snd_pcm_substream_chip(substream);
1276         size_t ptr, residue, period_bytes;
1277
1278         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1279                 return 0;
1280         period_bytes = snd_pcm_lib_period_bytes(substream);
1281         ptr = period_bytes * chip->p_periods_sent;
1282 #ifdef EBUS_SUPPORT
1283         if (chip->flags & CS4231_FLAG_EBUS) {
1284                 residue = ebus_dma_residue(&chip->eb2p);
1285         } else {
1286 #endif
1287 #ifdef SBUS_SUPPORT
1288                 residue = sbus_readl(chip->port + APCPC);
1289 #endif
1290 #ifdef EBUS_SUPPORT
1291         }
1292 #endif
1293         ptr += (period_bytes - residue);
1294         return bytes_to_frames(substream->runtime, ptr);
1295 }
1296
1297 static snd_pcm_uframes_t snd_cs4231_capture_pointer(snd_pcm_substream_t * substream)
1298 {
1299         cs4231_t *chip = snd_pcm_substream_chip(substream);
1300         size_t ptr, residue, period_bytes;
1301
1302         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1303                 return 0;
1304         period_bytes = snd_pcm_lib_period_bytes(substream);
1305         ptr = period_bytes * chip->c_periods_sent;
1306 #ifdef EBUS_SUPPORT
1307         if (chip->flags & CS4231_FLAG_EBUS) {
1308                 residue = ebus_dma_residue(&chip->eb2c);
1309         } else {
1310 #endif
1311 #ifdef SBUS_SUPPORT
1312                 residue = sbus_readl(chip->port + APCCC);
1313 #endif
1314 #ifdef EBUS_SUPPORT
1315         }
1316 #endif
1317         ptr += (period_bytes - residue);
1318         return bytes_to_frames(substream->runtime, ptr);
1319 }
1320
1321 /*
1322
1323  */
1324
1325 static int snd_cs4231_probe(cs4231_t *chip)
1326 {
1327         unsigned long flags;
1328         int i, id, vers;
1329         unsigned char *ptr;
1330
1331 #if 0
1332         snd_cs4231_debug(chip);
1333 #endif
1334         id = vers = 0;
1335         for (i = 0; i < 50; i++) {
1336                 mb();
1337                 if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
1338                         udelay(2000);
1339                 else {
1340                         spin_lock_irqsave(&chip->lock, flags);
1341                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1342                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1343                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1344                         spin_unlock_irqrestore(&chip->lock, flags);
1345                         if (id == 0x0a)
1346                                 break;  /* this is valid value */
1347                 }
1348         }
1349         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1350         if (id != 0x0a)
1351                 return -ENODEV; /* no valid device found */
1352
1353         spin_lock_irqsave(&chip->lock, flags);
1354
1355
1356         /* Reset DMA engine.  */
1357 #ifdef EBUS_SUPPORT
1358         if (chip->flags & CS4231_FLAG_EBUS) {
1359                 /* Done by ebus_dma_register */
1360         } else {
1361 #endif
1362 #ifdef SBUS_SUPPORT
1363                 sbus_writel(APC_CHIP_RESET, chip->port + APCCSR);
1364                 sbus_writel(0x00, chip->port + APCCSR);
1365                 sbus_writel(sbus_readl(chip->port + APCCSR) | APC_CDC_RESET,
1366                             chip->port + APCCSR);
1367
1368                 udelay(20);
1369
1370                 sbus_writel(sbus_readl(chip->port + APCCSR) & ~APC_CDC_RESET,
1371                             chip->port + APCCSR);
1372                 sbus_writel(sbus_readl(chip->port + APCCSR) | (APC_XINT_ENA |
1373                                                                APC_XINT_PENA |
1374                                                                APC_XINT_CENA),
1375                             chip->port + APCCSR);
1376 #endif
1377 #ifdef EBUS_SUPPORT
1378         }
1379 #endif
1380
1381         __cs4231_readb(chip, CS4231P(chip, STATUS));    /* clear any pendings IRQ */
1382         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));
1383         mb();
1384
1385         spin_unlock_irqrestore(&chip->lock, flags);
1386
1387         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1388         chip->image[CS4231_IFACE_CTRL] =
1389                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1390         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1391         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1392         if (vers & 0x20)
1393                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1394
1395         ptr = (unsigned char *) &chip->image;
1396
1397         snd_cs4231_mce_down(chip);
1398
1399         spin_lock_irqsave(&chip->lock, flags);
1400
1401         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1402                 snd_cs4231_out(chip, i, *ptr++);
1403
1404         spin_unlock_irqrestore(&chip->lock, flags);
1405
1406         snd_cs4231_mce_up(chip);
1407
1408         snd_cs4231_mce_down(chip);
1409
1410         mdelay(2);
1411
1412         return 0;               /* all things are ok.. */
1413 }
1414
1415 static snd_pcm_hardware_t snd_cs4231_playback =
1416 {
1417         .info                   = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1418                                  SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
1419         .formats                = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
1420                                  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1421                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1422                                  SNDRV_PCM_FMTBIT_S16_BE),
1423         .rates                  = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1424         .rate_min               = 5510,
1425         .rate_max               = 48000,
1426         .channels_min           = 1,
1427         .channels_max           = 2,
1428         .buffer_bytes_max       = (32*1024),
1429         .period_bytes_min       = 4096,
1430         .period_bytes_max       = (32*1024),
1431         .periods_min            = 1,
1432         .periods_max            = 1024,
1433 };
1434
1435 static snd_pcm_hardware_t snd_cs4231_capture =
1436 {
1437         .info                   = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1438                                  SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
1439         .formats                = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
1440                                  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1441                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1442                                  SNDRV_PCM_FMTBIT_S16_BE),
1443         .rates                  = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1444         .rate_min               = 5510,
1445         .rate_max               = 48000,
1446         .channels_min           = 1,
1447         .channels_max           = 2,
1448         .buffer_bytes_max       = (32*1024),
1449         .period_bytes_min       = 4096,
1450         .period_bytes_max       = (32*1024),
1451         .periods_min            = 1,
1452         .periods_max            = 1024,
1453 };
1454
1455 static int snd_cs4231_playback_open(snd_pcm_substream_t *substream)
1456 {
1457         cs4231_t *chip = snd_pcm_substream_chip(substream);
1458         snd_pcm_runtime_t *runtime = substream->runtime;
1459         int err;
1460
1461         runtime->hw = snd_cs4231_playback;
1462
1463         if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
1464                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1465                 return err;
1466         }
1467         chip->playback_substream = substream;
1468         chip->p_periods_sent = 0;
1469         snd_pcm_set_sync(substream);
1470         snd_cs4231_xrate(runtime);
1471
1472         return 0;
1473 }
1474
1475 static int snd_cs4231_capture_open(snd_pcm_substream_t *substream)
1476 {
1477         cs4231_t *chip = snd_pcm_substream_chip(substream);
1478         snd_pcm_runtime_t *runtime = substream->runtime;
1479         int err;
1480
1481         runtime->hw = snd_cs4231_capture;
1482
1483         if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
1484                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1485                 return err;
1486         }
1487         chip->capture_substream = substream;
1488         chip->c_periods_sent = 0;
1489         snd_pcm_set_sync(substream);
1490         snd_cs4231_xrate(runtime);
1491
1492         return 0;
1493 }
1494
1495 static int snd_cs4231_playback_close(snd_pcm_substream_t *substream)
1496 {
1497         cs4231_t *chip = snd_pcm_substream_chip(substream);
1498
1499         chip->playback_substream = NULL;
1500         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1501
1502         return 0;
1503 }
1504
1505 static int snd_cs4231_capture_close(snd_pcm_substream_t *substream)
1506 {
1507         cs4231_t *chip = snd_pcm_substream_chip(substream);
1508
1509         chip->capture_substream = NULL;
1510         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1511
1512         return 0;
1513 }
1514
1515 /* XXX We can do some power-management, in particular on EBUS using
1516  * XXX the audio AUXIO register...
1517  */
1518
1519 static snd_pcm_ops_t snd_cs4231_playback_ops = {
1520         .open           =       snd_cs4231_playback_open,
1521         .close          =       snd_cs4231_playback_close,
1522         .ioctl          =       snd_pcm_lib_ioctl,
1523         .hw_params      =       snd_cs4231_playback_hw_params,
1524         .hw_free        =       snd_cs4231_playback_hw_free,
1525         .prepare        =       snd_cs4231_playback_prepare,
1526         .trigger        =       snd_cs4231_trigger,
1527         .pointer        =       snd_cs4231_playback_pointer,
1528 };
1529
1530 static snd_pcm_ops_t snd_cs4231_capture_ops = {
1531         .open           =       snd_cs4231_capture_open,
1532         .close          =       snd_cs4231_capture_close,
1533         .ioctl          =       snd_pcm_lib_ioctl,
1534         .hw_params      =       snd_cs4231_capture_hw_params,
1535         .hw_free        =       snd_cs4231_capture_hw_free,
1536         .prepare        =       snd_cs4231_capture_prepare,
1537         .trigger        =       snd_cs4231_trigger,
1538         .pointer        =       snd_cs4231_capture_pointer,
1539 };
1540
1541 static void snd_cs4231_pcm_free(snd_pcm_t *pcm)
1542 {
1543         cs4231_t *chip = pcm->private_data;
1544         chip->pcm = NULL;
1545         snd_pcm_lib_preallocate_free_for_all(pcm);
1546 }
1547
1548 int snd_cs4231_pcm(cs4231_t *chip)
1549 {
1550         snd_pcm_t *pcm;
1551         int err;
1552
1553         if ((err = snd_pcm_new(chip->card, "CS4231", 0, 1, 1, &pcm)) < 0)
1554                 return err;
1555
1556         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
1557         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
1558
1559         /* global setup */
1560         pcm->private_data = chip;
1561         pcm->private_free = snd_cs4231_pcm_free;
1562         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1563         strcpy(pcm->name, "CS4231");
1564
1565 #ifdef EBUS_SUPPORT
1566         if (chip->flags & CS4231_FLAG_EBUS) {
1567                 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1568                                                       snd_dma_pci_data(chip->dev_u.pdev),
1569                                                       64*1024, 128*1024);
1570         } else {
1571 #endif
1572 #ifdef SBUS_SUPPORT
1573                 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
1574                                                       snd_dma_sbus_data(chip->dev_u.sdev),
1575                                                       64*1024, 128*1024);
1576 #endif
1577 #ifdef EBUS_SUPPORT
1578         }
1579 #endif
1580
1581         chip->pcm = pcm;
1582
1583         return 0;
1584 }
1585
1586 static void snd_cs4231_timer_free(snd_timer_t *timer)
1587 {
1588         cs4231_t *chip = timer->private_data;
1589         chip->timer = NULL;
1590 }
1591
1592 int snd_cs4231_timer(cs4231_t *chip)
1593 {
1594         snd_timer_t *timer;
1595         snd_timer_id_t tid;
1596         int err;
1597
1598         /* Timer initialization */
1599         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1600         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1601         tid.card = chip->card->number;
1602         tid.device = 0;
1603         tid.subdevice = 0;
1604         if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1605                 return err;
1606         strcpy(timer->name, "CS4231");
1607         timer->private_data = chip;
1608         timer->private_free = snd_cs4231_timer_free;
1609         timer->hw = snd_cs4231_timer_table;
1610         chip->timer = timer;
1611
1612         return 0;
1613 }
1614
1615 /*
1616  *  MIXER part
1617  */
1618
1619 static int snd_cs4231_info_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1620 {
1621         static char *texts[4] = {
1622                 "Line", "CD", "Mic", "Mix"
1623         };
1624         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1625
1626         snd_assert(chip->card != NULL, return -EINVAL);
1627         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1628         uinfo->count = 2;
1629         uinfo->value.enumerated.items = 4;
1630         if (uinfo->value.enumerated.item > 3)
1631                 uinfo->value.enumerated.item = 3;
1632         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1633
1634         return 0;
1635 }
1636
1637 static int snd_cs4231_get_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1638 {
1639         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1640         unsigned long flags;
1641
1642         spin_lock_irqsave(&chip->lock, flags);
1643         ucontrol->value.enumerated.item[0] =
1644                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1645         ucontrol->value.enumerated.item[1] =
1646                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1647         spin_unlock_irqrestore(&chip->lock, flags);
1648
1649         return 0;
1650 }
1651
1652 static int snd_cs4231_put_mux(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1653 {
1654         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1655         unsigned long flags;
1656         unsigned short left, right;
1657         int change;
1658
1659         if (ucontrol->value.enumerated.item[0] > 3 ||
1660             ucontrol->value.enumerated.item[1] > 3)
1661                 return -EINVAL;
1662         left = ucontrol->value.enumerated.item[0] << 6;
1663         right = ucontrol->value.enumerated.item[1] << 6;
1664
1665         spin_lock_irqsave(&chip->lock, flags);
1666
1667         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1668         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1669         change = left != chip->image[CS4231_LEFT_INPUT] ||
1670                  right != chip->image[CS4231_RIGHT_INPUT];
1671         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1672         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1673
1674         spin_unlock_irqrestore(&chip->lock, flags);
1675
1676         return change;
1677 }
1678
1679 int snd_cs4231_info_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1680 {
1681         int mask = (kcontrol->private_value >> 16) & 0xff;
1682
1683         uinfo->type = (mask == 1) ?
1684                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1685         uinfo->count = 1;
1686         uinfo->value.integer.min = 0;
1687         uinfo->value.integer.max = mask;
1688
1689         return 0;
1690 }
1691
1692 int snd_cs4231_get_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1693 {
1694         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1695         unsigned long flags;
1696         int reg = kcontrol->private_value & 0xff;
1697         int shift = (kcontrol->private_value >> 8) & 0xff;
1698         int mask = (kcontrol->private_value >> 16) & 0xff;
1699         int invert = (kcontrol->private_value >> 24) & 0xff;
1700
1701         spin_lock_irqsave(&chip->lock, flags);
1702
1703         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1704
1705         spin_unlock_irqrestore(&chip->lock, flags);
1706
1707         if (invert)
1708                 ucontrol->value.integer.value[0] =
1709                         (mask - ucontrol->value.integer.value[0]);
1710
1711         return 0;
1712 }
1713
1714 int snd_cs4231_put_single(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1715 {
1716         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1717         unsigned long flags;
1718         int reg = kcontrol->private_value & 0xff;
1719         int shift = (kcontrol->private_value >> 8) & 0xff;
1720         int mask = (kcontrol->private_value >> 16) & 0xff;
1721         int invert = (kcontrol->private_value >> 24) & 0xff;
1722         int change;
1723         unsigned short val;
1724
1725         val = (ucontrol->value.integer.value[0] & mask);
1726         if (invert)
1727                 val = mask - val;
1728         val <<= shift;
1729
1730         spin_lock_irqsave(&chip->lock, flags);
1731
1732         val = (chip->image[reg] & ~(mask << shift)) | val;
1733         change = val != chip->image[reg];
1734         snd_cs4231_out(chip, reg, val);
1735
1736         spin_unlock_irqrestore(&chip->lock, flags);
1737
1738         return change;
1739 }
1740
1741 int snd_cs4231_info_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo)
1742 {
1743         int mask = (kcontrol->private_value >> 24) & 0xff;
1744
1745         uinfo->type = mask == 1 ?
1746                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1747         uinfo->count = 2;
1748         uinfo->value.integer.min = 0;
1749         uinfo->value.integer.max = mask;
1750
1751         return 0;
1752 }
1753
1754 int snd_cs4231_get_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1755 {
1756         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1757         unsigned long flags;
1758         int left_reg = kcontrol->private_value & 0xff;
1759         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1760         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1761         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1762         int mask = (kcontrol->private_value >> 24) & 0xff;
1763         int invert = (kcontrol->private_value >> 22) & 1;
1764
1765         spin_lock_irqsave(&chip->lock, flags);
1766
1767         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1768         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1769
1770         spin_unlock_irqrestore(&chip->lock, flags);
1771
1772         if (invert) {
1773                 ucontrol->value.integer.value[0] =
1774                         (mask - ucontrol->value.integer.value[0]);
1775                 ucontrol->value.integer.value[1] =
1776                         (mask - ucontrol->value.integer.value[1]);
1777         }
1778
1779         return 0;
1780 }
1781
1782 int snd_cs4231_put_double(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
1783 {
1784         cs4231_t *chip = snd_kcontrol_chip(kcontrol);
1785         unsigned long flags;
1786         int left_reg = kcontrol->private_value & 0xff;
1787         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1788         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1789         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1790         int mask = (kcontrol->private_value >> 24) & 0xff;
1791         int invert = (kcontrol->private_value >> 22) & 1;
1792         int change;
1793         unsigned short val1, val2;
1794
1795         val1 = ucontrol->value.integer.value[0] & mask;
1796         val2 = ucontrol->value.integer.value[1] & mask;
1797         if (invert) {
1798                 val1 = mask - val1;
1799                 val2 = mask - val2;
1800         }
1801         val1 <<= shift_left;
1802         val2 <<= shift_right;
1803
1804         spin_lock_irqsave(&chip->lock, flags);
1805
1806         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1807         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1808         change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1809         snd_cs4231_out(chip, left_reg, val1);
1810         snd_cs4231_out(chip, right_reg, val2);
1811
1812         spin_unlock_irqrestore(&chip->lock, flags);
1813
1814         return change;
1815 }
1816
1817 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1818 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1819   .info = snd_cs4231_info_single, \
1820   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single, \
1821   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1822
1823 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1824 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1825   .info = snd_cs4231_info_double, \
1826   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double, \
1827   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1828
1829 static snd_kcontrol_new_t snd_cs4231_controls[] = {
1830 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1831 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1832 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1833 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1834 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1835 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1836 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1837 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1838 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1839 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1840 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1841 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1842 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1843 {
1844         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1845         .name   = "Capture Source",
1846         .info   = snd_cs4231_info_mux,
1847         .get    = snd_cs4231_get_mux,
1848         .put    = snd_cs4231_put_mux,
1849 },
1850 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1851 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1852 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1853 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1854 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1855 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1856 };
1857
1858 int snd_cs4231_mixer(cs4231_t *chip)
1859 {
1860         snd_card_t *card;
1861         int err, idx;
1862
1863         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1864
1865         card = chip->card;
1866
1867         strcpy(card->mixername, chip->pcm->name);
1868
1869         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1870                 if ((err = snd_ctl_add(card,
1871                                        snd_ctl_new1(&snd_cs4231_controls[idx],
1872                                                     chip))) < 0)
1873                         return err;
1874         }
1875         return 0;
1876 }
1877
1878 static int dev;
1879
1880 static int cs4231_attach_begin(snd_card_t **rcard)
1881 {
1882         snd_card_t *card;
1883
1884         *rcard = NULL;
1885
1886         if (dev >= SNDRV_CARDS)
1887                 return -ENODEV;
1888
1889         if (!enable[dev]) {
1890                 dev++;
1891                 return -ENOENT;
1892         }
1893
1894         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1895         if (card == NULL)
1896                 return -ENOMEM;
1897
1898         strcpy(card->driver, "CS4231");
1899         strcpy(card->shortname, "Sun CS4231");
1900
1901         *rcard = card;
1902         return 0;
1903 }
1904
1905 static int cs4231_attach_finish(snd_card_t *card, cs4231_t *chip)
1906 {
1907         int err;
1908
1909         if ((err = snd_cs4231_pcm(chip)) < 0)
1910                 goto out_err;
1911
1912         if ((err = snd_cs4231_mixer(chip)) < 0)
1913                 goto out_err;
1914
1915         if ((err = snd_cs4231_timer(chip)) < 0)
1916                 goto out_err;
1917
1918         if ((err = snd_card_register(card)) < 0)
1919                 goto out_err;
1920
1921         chip->next = cs4231_list;
1922         cs4231_list = chip;
1923
1924         dev++;
1925         return 0;
1926
1927 out_err:
1928         snd_card_free(card);
1929         return err;
1930 }
1931
1932 #ifdef SBUS_SUPPORT
1933 static int snd_cs4231_sbus_free(cs4231_t *chip)
1934 {
1935         if (chip->irq[0])
1936                 free_irq(chip->irq[0], chip);
1937
1938         if (chip->port)
1939                 sbus_iounmap(chip->port, chip->regs_size);
1940
1941         if (chip->timer)
1942                 snd_device_free(chip->card, chip->timer);
1943
1944         kfree(chip);
1945
1946         return 0;
1947 }
1948
1949 static int snd_cs4231_sbus_dev_free(snd_device_t *device)
1950 {
1951         cs4231_t *cp = device->device_data;
1952
1953         return snd_cs4231_sbus_free(cp);
1954 }
1955
1956 static snd_device_ops_t snd_cs4231_sbus_dev_ops = {
1957         .dev_free       =       snd_cs4231_sbus_dev_free,
1958 };
1959
1960 static int __init snd_cs4231_sbus_create(snd_card_t *card,
1961                                          struct sbus_dev *sdev,
1962                                          int dev,
1963                                          cs4231_t **rchip)
1964 {
1965         cs4231_t *chip;
1966         int err;
1967
1968         *rchip = NULL;
1969         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
1970         if (chip == NULL)
1971                 return -ENOMEM;
1972
1973         spin_lock_init(&chip->lock);
1974         init_MUTEX(&chip->mce_mutex);
1975         init_MUTEX(&chip->open_mutex);
1976         chip->card = card;
1977         chip->dev_u.sdev = sdev;
1978         chip->regs_size = sdev->reg_addrs[0].reg_size;
1979         memcpy(&chip->image, &snd_cs4231_original_image,
1980                sizeof(snd_cs4231_original_image));
1981
1982         chip->port = sbus_ioremap(&sdev->resource[0], 0,
1983                                   chip->regs_size, "cs4231");
1984         if (!chip->port) {
1985                 snd_printk("cs4231-%d: Unable to map chip registers.\n", dev);
1986                 return -EIO;
1987         }
1988
1989         if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
1990                         SA_SHIRQ, "cs4231", chip)) {
1991                 snd_printk("cs4231-%d: Unable to grab SBUS IRQ %s\n",
1992                            dev,
1993                            __irq_itoa(sdev->irqs[0]));
1994                 snd_cs4231_sbus_free(chip);
1995                 return -EBUSY;
1996         }
1997         chip->irq[0] = sdev->irqs[0];
1998
1999         if (snd_cs4231_probe(chip) < 0) {
2000                 snd_cs4231_sbus_free(chip);
2001                 return -ENODEV;
2002         }
2003         snd_cs4231_init(chip);
2004
2005         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2006                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
2007                 snd_cs4231_sbus_free(chip);
2008                 return err;
2009         }
2010
2011         *rchip = chip;
2012         return 0;
2013 }
2014
2015 static int cs4231_sbus_attach(struct sbus_dev *sdev)
2016 {
2017         struct resource *rp = &sdev->resource[0];
2018         cs4231_t *cp;
2019         snd_card_t *card;
2020         int err;
2021
2022         err = cs4231_attach_begin(&card);
2023         if (err)
2024                 return err;
2025
2026         sprintf(card->longname, "%s at 0x%02lx:0x%08lx, irq %s",
2027                 card->shortname,
2028                 rp->flags & 0xffL,
2029                 rp->start,
2030                 __irq_itoa(sdev->irqs[0]));
2031
2032         if ((err = snd_cs4231_sbus_create(card, sdev, dev, &cp)) < 0) {
2033                 snd_card_free(card);
2034                 return err;
2035         }
2036
2037         return cs4231_attach_finish(card, cp);
2038 }
2039 #endif
2040
2041 #ifdef EBUS_SUPPORT
2042 static int snd_cs4231_ebus_free(cs4231_t *chip)
2043 {
2044         if (chip->eb2c.regs) {
2045                 ebus_dma_unregister(&chip->eb2c);
2046                 iounmap(chip->eb2c.regs);
2047         }
2048         if (chip->eb2p.regs) {
2049                 ebus_dma_unregister(&chip->eb2p);
2050                 iounmap(chip->eb2p.regs);
2051         }
2052
2053         if (chip->port)
2054                 iounmap(chip->port);
2055         if (chip->timer)
2056                 snd_device_free(chip->card, chip->timer);
2057
2058         kfree(chip);
2059
2060         return 0;
2061 }
2062
2063 static int snd_cs4231_ebus_dev_free(snd_device_t *device)
2064 {
2065         cs4231_t *cp = device->device_data;
2066
2067         return snd_cs4231_ebus_free(cp);
2068 }
2069
2070 static snd_device_ops_t snd_cs4231_ebus_dev_ops = {
2071         .dev_free       =       snd_cs4231_ebus_dev_free,
2072 };
2073
2074 static int __init snd_cs4231_ebus_create(snd_card_t *card,
2075                                          struct linux_ebus_device *edev,
2076                                          int dev,
2077                                          cs4231_t **rchip)
2078 {
2079         cs4231_t *chip;
2080         int err;
2081
2082         *rchip = NULL;
2083         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
2084         if (chip == NULL)
2085                 return -ENOMEM;
2086
2087         spin_lock_init(&chip->lock);
2088         spin_lock_init(&chip->eb2c.lock);
2089         spin_lock_init(&chip->eb2p.lock);
2090         init_MUTEX(&chip->mce_mutex);
2091         init_MUTEX(&chip->open_mutex);
2092         chip->flags |= CS4231_FLAG_EBUS;
2093         chip->card = card;
2094         chip->dev_u.pdev = edev->bus->self;
2095         memcpy(&chip->image, &snd_cs4231_original_image,
2096                sizeof(snd_cs4231_original_image));
2097         strcpy(chip->eb2c.name, "cs4231(capture)");
2098         chip->eb2c.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2099         chip->eb2c.callback = snd_cs4231_ebus_capture_callback;
2100         chip->eb2c.client_cookie = chip;
2101         chip->eb2c.irq = edev->irqs[0];
2102         strcpy(chip->eb2p.name, "cs4231(play)");
2103         chip->eb2p.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2104         chip->eb2p.callback = snd_cs4231_ebus_play_callback;
2105         chip->eb2p.client_cookie = chip;
2106         chip->eb2p.irq = edev->irqs[1];
2107
2108         chip->port = ioremap(edev->resource[0].start, 0x10);
2109         chip->eb2p.regs = ioremap(edev->resource[1].start, 0x10);
2110         chip->eb2c.regs = ioremap(edev->resource[2].start, 0x10);
2111         if (!chip->port || !chip->eb2p.regs || !chip->eb2c.regs) {
2112                 snd_cs4231_ebus_free(chip);
2113                 snd_printk("cs4231-%d: Unable to map chip registers.\n", dev);
2114                 return -EIO;
2115         }
2116
2117         if (ebus_dma_register(&chip->eb2c)) {
2118                 snd_cs4231_ebus_free(chip);
2119                 snd_printk("cs4231-%d: Unable to register EBUS capture DMA\n", dev);
2120                 return -EBUSY;
2121         }
2122         if (ebus_dma_irq_enable(&chip->eb2c, 1)) {
2123                 snd_cs4231_ebus_free(chip);
2124                 snd_printk("cs4231-%d: Unable to enable EBUS capture IRQ\n", dev);
2125                 return -EBUSY;
2126         }
2127
2128         if (ebus_dma_register(&chip->eb2p)) {
2129                 snd_cs4231_ebus_free(chip);
2130                 snd_printk("cs4231-%d: Unable to register EBUS play DMA\n", dev);
2131                 return -EBUSY;
2132         }
2133         if (ebus_dma_irq_enable(&chip->eb2p, 1)) {
2134                 snd_cs4231_ebus_free(chip);
2135                 snd_printk("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2136                 return -EBUSY;
2137         }
2138
2139         if (snd_cs4231_probe(chip) < 0) {
2140                 snd_cs4231_ebus_free(chip);
2141                 return -ENODEV;
2142         }
2143         snd_cs4231_init(chip);
2144
2145         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2146                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2147                 snd_cs4231_ebus_free(chip);
2148                 return err;
2149         }
2150
2151         *rchip = chip;
2152         return 0;
2153 }
2154
2155 static int cs4231_ebus_attach(struct linux_ebus_device *edev)
2156 {
2157         snd_card_t *card;
2158         cs4231_t *chip;
2159         int err;
2160
2161         err = cs4231_attach_begin(&card);
2162         if (err)
2163                 return err;
2164
2165         sprintf(card->longname, "%s at 0x%lx, irq %s",
2166                 card->shortname,
2167                 edev->resource[0].start,
2168                 __irq_itoa(edev->irqs[0]));
2169
2170         if ((err = snd_cs4231_ebus_create(card, edev, dev, &chip)) < 0) {
2171                 snd_card_free(card);
2172                 return err;
2173         }
2174
2175         return cs4231_attach_finish(card, chip);
2176 }
2177 #endif
2178
2179 static int __init cs4231_init(void)
2180 {
2181 #ifdef SBUS_SUPPORT
2182         struct sbus_bus *sbus;
2183         struct sbus_dev *sdev;
2184 #endif
2185 #ifdef EBUS_SUPPORT
2186         struct linux_ebus *ebus;
2187         struct linux_ebus_device *edev;
2188 #endif
2189         int found;
2190
2191         found = 0;
2192
2193 #ifdef SBUS_SUPPORT
2194         for_all_sbusdev(sdev, sbus) {
2195                 if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
2196                         if (cs4231_sbus_attach(sdev) == 0)
2197                                 found++;
2198                 }
2199         }
2200 #endif
2201 #ifdef EBUS_SUPPORT
2202         for_each_ebus(ebus) {
2203                 for_each_ebusdev(edev, ebus) {
2204                         int match = 0;
2205
2206                         if (!strcmp(edev->prom_name, "SUNW,CS4231")) {
2207                                 match = 1;
2208                         } else if (!strcmp(edev->prom_name, "audio")) {
2209                                 char compat[16];
2210
2211                                 prom_getstring(edev->prom_node, "compatible",
2212                                                compat, sizeof(compat));
2213                                 compat[15] = '\0';
2214                                 if (!strcmp(compat, "SUNW,CS4231"))
2215                                         match = 1;
2216                         }
2217
2218                         if (match &&
2219                             cs4231_ebus_attach(edev) == 0)
2220                                 found++;
2221                 }
2222         }
2223 #endif
2224
2225
2226         return (found > 0) ? 0 : -EIO;
2227 }
2228
2229 static void __exit cs4231_exit(void)
2230 {
2231         cs4231_t *p = cs4231_list;
2232
2233         while (p != NULL) {
2234                 cs4231_t *next = p->next;
2235
2236                 snd_card_free(p->card);
2237
2238                 p = next;
2239         }
2240
2241         cs4231_list = NULL;
2242 }
2243
2244 module_init(cs4231_init);
2245 module_exit(cs4231_exit);