linux/sound/pci/ali5451/ali5451.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  Matt Wu <Matt_Wu@acersoftech.com.cn>
   4 *  Apr 26, 2001
   5 *  Routines for control of ALi pci audio M5451
   6 *
   7 *  BUGS:
   8 *    --
   9 *
  10 *  TODO:
  11 *    --
  12 */
  13
  14#include <linux/io.h>
  15#include <linux/delay.h>
  16#include <linux/interrupt.h>
  17#include <linux/init.h>
  18#include <linux/pci.h>
  19#include <linux/slab.h>
  20#include <linux/module.h>
  21#include <linux/dma-mapping.h>
  22#include <sound/core.h>
  23#include <sound/pcm.h>
  24#include <sound/info.h>
  25#include <sound/ac97_codec.h>
  26#include <sound/mpu401.h>
  27#include <sound/initval.h>
  28
  29MODULE_AUTHOR("Matt Wu <Matt_Wu@acersoftech.com.cn>");
  30MODULE_DESCRIPTION("ALI M5451");
  31MODULE_LICENSE("GPL");
  32
  33static int index = SNDRV_DEFAULT_IDX1;  /* Index */
  34static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  35static int pcm_channels = 32;
  36static bool spdif;
  37
  38module_param(index, int, 0444);
  39MODULE_PARM_DESC(index, "Index value for ALI M5451 PCI Audio.");
  40module_param(id, charp, 0444);
  41MODULE_PARM_DESC(id, "ID string for ALI M5451 PCI Audio.");
  42module_param(pcm_channels, int, 0444);
  43MODULE_PARM_DESC(pcm_channels, "PCM Channels");
  44module_param(spdif, bool, 0444);
  45MODULE_PARM_DESC(spdif, "Support SPDIF I/O");
  46
  47/* just for backward compatibility */
  48static bool enable;
  49module_param(enable, bool, 0444);
  50
  51
  52/*
  53 *  Constants definition
  54 */
  55
  56#define DEVICE_ID_ALI5451       ((PCI_VENDOR_ID_AL<<16)|PCI_DEVICE_ID_AL_M5451)
  57
  58
  59#define ALI_CHANNELS            32
  60
  61#define ALI_PCM_IN_CHANNEL      31
  62#define ALI_SPDIF_IN_CHANNEL    19
  63#define ALI_SPDIF_OUT_CHANNEL   15
  64#define ALI_CENTER_CHANNEL      24
  65#define ALI_LEF_CHANNEL         23
  66#define ALI_SURR_LEFT_CHANNEL   26
  67#define ALI_SURR_RIGHT_CHANNEL  25
  68#define ALI_MODEM_IN_CHANNEL    21
  69#define ALI_MODEM_OUT_CHANNEL   20
  70
  71#define SNDRV_ALI_VOICE_TYPE_PCM        01
  72#define SNDRV_ALI_VOICE_TYPE_OTH        02
  73
  74#define ALI_5451_V02            0x02
  75
  76/*
  77 *  Direct Registers
  78 */
  79
  80#define ALI_LEGACY_DMAR0        0x00  /* ADR0 */
  81#define ALI_LEGACY_DMAR4        0x04  /* CNT0 */
  82#define ALI_LEGACY_DMAR11       0x0b  /* MOD  */
  83#define ALI_LEGACY_DMAR15       0x0f  /* MMR  */
  84#define ALI_MPUR0               0x20
  85#define ALI_MPUR1               0x21
  86#define ALI_MPUR2               0x22
  87#define ALI_MPUR3               0x23
  88
  89#define ALI_AC97_WRITE          0x40
  90#define ALI_AC97_READ           0x44
  91
  92#define ALI_SCTRL               0x48
  93#define   ALI_SPDIF_OUT_ENABLE          0x20
  94#define   ALI_SCTRL_LINE_IN2            (1 << 9)
  95#define   ALI_SCTRL_GPIO_IN2            (1 << 13)
  96#define   ALI_SCTRL_LINE_OUT_EN         (1 << 20)
  97#define   ALI_SCTRL_GPIO_OUT_EN         (1 << 23)
  98#define   ALI_SCTRL_CODEC1_READY        (1 << 24)
  99#define   ALI_SCTRL_CODEC2_READY        (1 << 25)
 100#define ALI_AC97_GPIO           0x4c
 101#define   ALI_AC97_GPIO_ENABLE          0x8000
 102#define   ALI_AC97_GPIO_DATA_SHIFT      16
 103#define ALI_SPDIF_CS            0x70
 104#define ALI_SPDIF_CTRL          0x74
 105#define   ALI_SPDIF_IN_FUNC_ENABLE      0x02
 106#define   ALI_SPDIF_IN_CH_STATUS        0x40
 107#define   ALI_SPDIF_OUT_CH_STATUS       0xbf
 108#define ALI_START               0x80
 109#define ALI_STOP                0x84
 110#define ALI_CSPF                0x90
 111#define ALI_AINT                0x98
 112#define ALI_GC_CIR              0xa0
 113        #define ENDLP_IE                0x00001000
 114        #define MIDLP_IE                0x00002000
 115#define ALI_AINTEN              0xa4
 116#define ALI_VOLUME              0xa8
 117#define ALI_SBDELTA_DELTA_R     0xac
 118#define ALI_MISCINT             0xb0
 119        #define ADDRESS_IRQ             0x00000020
 120        #define TARGET_REACHED          0x00008000
 121        #define MIXER_OVERFLOW          0x00000800
 122        #define MIXER_UNDERFLOW         0x00000400
 123        #define GPIO_IRQ                0x01000000
 124#define ALI_SBBL_SBCL           0xc0
 125#define ALI_SBCTRL_SBE2R_SBDD   0xc4
 126#define ALI_STIMER              0xc8
 127#define ALI_GLOBAL_CONTROL      0xd4
 128#define   ALI_SPDIF_OUT_SEL_PCM         0x00000400 /* bit 10 */
 129#define   ALI_SPDIF_IN_SUPPORT          0x00000800 /* bit 11 */
 130#define   ALI_SPDIF_OUT_CH_ENABLE       0x00008000 /* bit 15 */
 131#define   ALI_SPDIF_IN_CH_ENABLE        0x00080000 /* bit 19 */
 132#define   ALI_PCM_IN_ENABLE             0x80000000 /* bit 31 */
 133
 134#define ALI_CSO_ALPHA_FMS       0xe0
 135#define ALI_LBA                 0xe4
 136#define ALI_ESO_DELTA           0xe8
 137#define ALI_GVSEL_PAN_VOC_CTRL_EC       0xf0
 138#define ALI_EBUF1               0xf4
 139#define ALI_EBUF2               0xf8
 140
 141#define ALI_REG(codec, x) ((codec)->port + x)
 142
 143#define MAX_CODECS 2
 144
 145
 146struct snd_ali;
 147struct snd_ali_voice;
 148
 149struct snd_ali_channel_control {
 150        /* register data */
 151        struct REGDATA {
 152                unsigned int start;
 153                unsigned int stop;
 154                unsigned int aint;
 155                unsigned int ainten;
 156        } data;
 157                
 158        /* register addresses */
 159        struct REGS {
 160                unsigned int start;
 161                unsigned int stop;
 162                unsigned int aint;
 163                unsigned int ainten;
 164                unsigned int ac97read;
 165                unsigned int ac97write;
 166        } regs;
 167
 168};
 169
 170struct snd_ali_voice {
 171        unsigned int number;
 172        unsigned int use :1,
 173                pcm :1,
 174                midi :1,
 175                mode :1,
 176                synth :1,
 177                running :1;
 178
 179        /* PCM data */
 180        struct snd_ali *codec;
 181        struct snd_pcm_substream *substream;
 182        struct snd_ali_voice *extra;
 183        
 184        int eso;                /* final ESO value for channel */
 185        int count;              /* runtime->period_size */
 186
 187        /* --- */
 188
 189        void *private_data;
 190        void (*private_free)(void *private_data);
 191};
 192
 193
 194struct snd_alidev {
 195
 196        struct snd_ali_voice voices[ALI_CHANNELS];      
 197
 198        unsigned int    chcnt;                  /* num of opened channels */
 199        unsigned int    chmap;                  /* bitmap for opened channels */
 200        unsigned int synthcount;
 201
 202};
 203
 204
 205#define ALI_GLOBAL_REGS         56
 206#define ALI_CHANNEL_REGS        8
 207struct snd_ali_image {
 208        u32 regs[ALI_GLOBAL_REGS];
 209        u32 channel_regs[ALI_CHANNELS][ALI_CHANNEL_REGS];
 210};
 211
 212
 213struct snd_ali {
 214        int             irq;
 215        unsigned long   port;
 216        unsigned char   revision;
 217
 218        unsigned int hw_initialized :1;
 219        unsigned int spdif_support :1;
 220
 221        struct pci_dev  *pci;
 222        struct pci_dev  *pci_m1533;
 223        struct pci_dev  *pci_m7101;
 224
 225        struct snd_card *card;
 226        struct snd_pcm  *pcm[MAX_CODECS];
 227        struct snd_alidev       synth;
 228        struct snd_ali_channel_control chregs;
 229
 230        /* S/PDIF Mask */
 231        unsigned int    spdif_mask;
 232
 233        unsigned int spurious_irq_count;
 234        unsigned int spurious_irq_max_delta;
 235
 236        unsigned int num_of_codecs;
 237
 238        struct snd_ac97_bus *ac97_bus;
 239        struct snd_ac97 *ac97[MAX_CODECS];
 240        unsigned short  ac97_ext_id;
 241        unsigned short  ac97_ext_status;
 242
 243        spinlock_t      reg_lock;
 244        spinlock_t      voice_alloc;
 245
 246#ifdef CONFIG_PM_SLEEP
 247        struct snd_ali_image *image;
 248#endif
 249};
 250
 251static const struct pci_device_id snd_ali_ids[] = {
 252        {PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5451), 0, 0, 0},
 253        {0, }
 254};
 255MODULE_DEVICE_TABLE(pci, snd_ali_ids);
 256
 257static void snd_ali_clear_voices(struct snd_ali *, unsigned int, unsigned int);
 258static unsigned short snd_ali_codec_peek(struct snd_ali *, int, unsigned short);
 259static void snd_ali_codec_poke(struct snd_ali *, int, unsigned short,
 260                               unsigned short);
 261
 262/*
 263 *  AC97 ACCESS
 264 */
 265
 266static inline unsigned int snd_ali_5451_peek(struct snd_ali *codec,
 267                                             unsigned int port)
 268{
 269        return (unsigned int)inl(ALI_REG(codec, port)); 
 270}
 271
 272static inline void snd_ali_5451_poke(struct snd_ali *codec,
 273                                     unsigned int port,
 274                                     unsigned int val)
 275{
 276        outl((unsigned int)val, ALI_REG(codec, port));
 277}
 278
 279static int snd_ali_codec_ready(struct snd_ali *codec,
 280                               unsigned int port)
 281{
 282        unsigned long end_time;
 283        unsigned int res;
 284        
 285        end_time = jiffies + msecs_to_jiffies(250);
 286
 287        for (;;) {
 288                res = snd_ali_5451_peek(codec,port);
 289                if (!(res & 0x8000))
 290                        return 0;
 291                if (!time_after_eq(end_time, jiffies))
 292                        break;
 293                schedule_timeout_uninterruptible(1);
 294        }
 295
 296        snd_ali_5451_poke(codec, port, res & ~0x8000);
 297        dev_dbg(codec->card->dev, "ali_codec_ready: codec is not ready.\n ");
 298        return -EIO;
 299}
 300
 301static int snd_ali_stimer_ready(struct snd_ali *codec)
 302{
 303        unsigned long end_time;
 304        unsigned long dwChk1,dwChk2;
 305        
 306        dwChk1 = snd_ali_5451_peek(codec, ALI_STIMER);
 307        end_time = jiffies + msecs_to_jiffies(250);
 308
 309        for (;;) {
 310                dwChk2 = snd_ali_5451_peek(codec, ALI_STIMER);
 311                if (dwChk2 != dwChk1)
 312                        return 0;
 313                if (!time_after_eq(end_time, jiffies))
 314                        break;
 315                schedule_timeout_uninterruptible(1);
 316        }
 317
 318        dev_err(codec->card->dev, "ali_stimer_read: stimer is not ready.\n");
 319        return -EIO;
 320}
 321
 322static void snd_ali_codec_poke(struct snd_ali *codec,int secondary,
 323                               unsigned short reg,
 324                               unsigned short val)
 325{
 326        unsigned int dwVal;
 327        unsigned int port;
 328
 329        if (reg >= 0x80) {
 330                dev_err(codec->card->dev,
 331                        "ali_codec_poke: reg(%xh) invalid.\n", reg);
 332                return;
 333        }
 334
 335        port = codec->chregs.regs.ac97write;
 336
 337        if (snd_ali_codec_ready(codec, port) < 0)
 338                return;
 339        if (snd_ali_stimer_ready(codec) < 0)
 340                return;
 341
 342        dwVal  = (unsigned int) (reg & 0xff);
 343        dwVal |= 0x8000 | (val << 16);
 344        if (secondary)
 345                dwVal |= 0x0080;
 346        if (codec->revision == ALI_5451_V02)
 347                dwVal |= 0x0100;
 348
 349        snd_ali_5451_poke(codec, port, dwVal);
 350
 351        return ;
 352}
 353
 354static unsigned short snd_ali_codec_peek(struct snd_ali *codec,
 355                                         int secondary,
 356                                         unsigned short reg)
 357{
 358        unsigned int dwVal;
 359        unsigned int port;
 360
 361        if (reg >= 0x80) {
 362                dev_err(codec->card->dev,
 363                        "ali_codec_peek: reg(%xh) invalid.\n", reg);
 364                return ~0;
 365        }
 366
 367        port = codec->chregs.regs.ac97read;
 368
 369        if (snd_ali_codec_ready(codec, port) < 0)
 370                return ~0;
 371        if (snd_ali_stimer_ready(codec) < 0)
 372                return ~0;
 373
 374        dwVal  = (unsigned int) (reg & 0xff);
 375        dwVal |= 0x8000;                                /* bit 15*/
 376        if (secondary)
 377                dwVal |= 0x0080;
 378
 379        snd_ali_5451_poke(codec, port, dwVal);
 380
 381        if (snd_ali_stimer_ready(codec) < 0)
 382                return ~0;
 383        if (snd_ali_codec_ready(codec, port) < 0)
 384                return ~0;
 385        
 386        return (snd_ali_5451_peek(codec, port) & 0xffff0000) >> 16;
 387}
 388
 389static void snd_ali_codec_write(struct snd_ac97 *ac97,
 390                                unsigned short reg,
 391                                unsigned short val )
 392{
 393        struct snd_ali *codec = ac97->private_data;
 394
 395        dev_dbg(codec->card->dev, "codec_write: reg=%xh data=%xh.\n", reg, val);
 396        if (reg == AC97_GPIO_STATUS) {
 397                outl((val << ALI_AC97_GPIO_DATA_SHIFT) | ALI_AC97_GPIO_ENABLE,
 398                     ALI_REG(codec, ALI_AC97_GPIO));
 399                return;
 400        }
 401        snd_ali_codec_poke(codec, ac97->num, reg, val);
 402        return ;
 403}
 404
 405
 406static unsigned short snd_ali_codec_read(struct snd_ac97 *ac97,
 407                                         unsigned short reg)
 408{
 409        struct snd_ali *codec = ac97->private_data;
 410
 411        dev_dbg(codec->card->dev, "codec_read reg=%xh.\n", reg);
 412        return snd_ali_codec_peek(codec, ac97->num, reg);
 413}
 414
 415/*
 416 *      AC97 Reset
 417 */
 418
 419static int snd_ali_reset_5451(struct snd_ali *codec)
 420{
 421        struct pci_dev *pci_dev;
 422        unsigned short wCount, wReg;
 423        unsigned int   dwVal;
 424        
 425        pci_dev = codec->pci_m1533;
 426        if (pci_dev) {
 427                pci_read_config_dword(pci_dev, 0x7c, &dwVal);
 428                pci_write_config_dword(pci_dev, 0x7c, dwVal | 0x08000000);
 429                mdelay(5);
 430                pci_read_config_dword(pci_dev, 0x7c, &dwVal);
 431                pci_write_config_dword(pci_dev, 0x7c, dwVal & 0xf7ffffff);
 432                mdelay(5);
 433        }
 434        
 435        pci_dev = codec->pci;
 436        pci_read_config_dword(pci_dev, 0x44, &dwVal);
 437        pci_write_config_dword(pci_dev, 0x44, dwVal | 0x000c0000);
 438        udelay(500);
 439        pci_read_config_dword(pci_dev, 0x44, &dwVal);
 440        pci_write_config_dword(pci_dev, 0x44, dwVal & 0xfffbffff);
 441        mdelay(5);
 442        
 443        wCount = 200;
 444        while(wCount--) {
 445                wReg = snd_ali_codec_peek(codec, 0, AC97_POWERDOWN);
 446                if ((wReg & 0x000f) == 0x000f)
 447                        return 0;
 448                mdelay(5);
 449        }
 450
 451        /* non-fatal if you have a non PM capable codec */
 452        /* dev_warn(codec->card->dev, "ali5451: reset time out\n"); */
 453        return 0;
 454}
 455
 456/*
 457 *  ALI 5451 Controller
 458 */
 459
 460static void snd_ali_enable_special_channel(struct snd_ali *codec,
 461                                           unsigned int channel)
 462{
 463        unsigned long dwVal;
 464
 465        dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
 466        dwVal |= 1 << (channel & 0x0000001f);
 467        outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
 468}
 469
 470static void snd_ali_disable_special_channel(struct snd_ali *codec,
 471                                            unsigned int channel)
 472{
 473        unsigned long dwVal;
 474
 475        dwVal  = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
 476        dwVal &= ~(1 << (channel & 0x0000001f));
 477        outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
 478}
 479
 480static void snd_ali_enable_address_interrupt(struct snd_ali *codec)
 481{
 482        unsigned int gc;
 483
 484        gc  = inl(ALI_REG(codec, ALI_GC_CIR));
 485        gc |= ENDLP_IE;
 486        gc |= MIDLP_IE;
 487        outl( gc, ALI_REG(codec, ALI_GC_CIR));
 488}
 489
 490static void snd_ali_disable_address_interrupt(struct snd_ali *codec)
 491{
 492        unsigned int gc;
 493
 494        gc  = inl(ALI_REG(codec, ALI_GC_CIR));
 495        gc &= ~ENDLP_IE;
 496        gc &= ~MIDLP_IE;
 497        outl(gc, ALI_REG(codec, ALI_GC_CIR));
 498}
 499
 500static void snd_ali_disable_voice_irq(struct snd_ali *codec,
 501                                      unsigned int channel)
 502{
 503        unsigned int mask;
 504        struct snd_ali_channel_control *pchregs = &(codec->chregs);
 505
 506        dev_dbg(codec->card->dev, "disable_voice_irq channel=%d\n", channel);
 507
 508        mask = 1 << (channel & 0x1f);
 509        pchregs->data.ainten  = inl(ALI_REG(codec, pchregs->regs.ainten));
 510        pchregs->data.ainten &= ~mask;
 511        outl(pchregs->data.ainten, ALI_REG(codec, pchregs->regs.ainten));
 512}
 513
 514static int snd_ali_alloc_pcm_channel(struct snd_ali *codec, int channel)
 515{
 516        unsigned int idx =  channel & 0x1f;
 517
 518        if (codec->synth.chcnt >= ALI_CHANNELS){
 519                dev_err(codec->card->dev,
 520                           "ali_alloc_pcm_channel: no free channels.\n");
 521                return -1;
 522        }
 523
 524        if (!(codec->synth.chmap & (1 << idx))) {
 525                codec->synth.chmap |= 1 << idx;
 526                codec->synth.chcnt++;
 527                dev_dbg(codec->card->dev, "alloc_pcm_channel no. %d.\n", idx);
 528                return idx;
 529        }
 530        return -1;
 531}
 532
 533static int snd_ali_find_free_channel(struct snd_ali * codec, int rec)
 534{
 535        int idx;
 536        int result = -1;
 537
 538        dev_dbg(codec->card->dev,
 539                "find_free_channel: for %s\n", rec ? "rec" : "pcm");
 540
 541        /* recording */
 542        if (rec) {
 543                if (codec->spdif_support &&
 544                    (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
 545                     ALI_SPDIF_IN_SUPPORT))
 546                        idx = ALI_SPDIF_IN_CHANNEL;
 547                else
 548                        idx = ALI_PCM_IN_CHANNEL;
 549
 550                result = snd_ali_alloc_pcm_channel(codec, idx);
 551                if (result >= 0)
 552                        return result;
 553                else {
 554                        dev_err(codec->card->dev,
 555                                "ali_find_free_channel: record channel is busy now.\n");
 556                        return -1;
 557                }
 558        }
 559
 560        /* playback... */
 561        if (codec->spdif_support &&
 562            (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
 563             ALI_SPDIF_OUT_CH_ENABLE)) {
 564                idx = ALI_SPDIF_OUT_CHANNEL;
 565                result = snd_ali_alloc_pcm_channel(codec, idx);
 566                if (result >= 0)
 567                        return result;
 568                else
 569                        dev_err(codec->card->dev,
 570                                "ali_find_free_channel: S/PDIF out channel is in busy now.\n");
 571        }
 572
 573        for (idx = 0; idx < ALI_CHANNELS; idx++) {
 574                result = snd_ali_alloc_pcm_channel(codec, idx);
 575                if (result >= 0)
 576                        return result;
 577        }
 578        dev_err(codec->card->dev, "ali_find_free_channel: no free channels.\n");
 579        return -1;
 580}
 581
 582static void snd_ali_free_channel_pcm(struct snd_ali *codec, int channel)
 583{
 584        unsigned int idx = channel & 0x0000001f;
 585
 586        dev_dbg(codec->card->dev, "free_channel_pcm channel=%d\n", channel);
 587
 588        if (channel < 0 || channel >= ALI_CHANNELS)
 589                return;
 590
 591        if (!(codec->synth.chmap & (1 << idx))) {
 592                dev_err(codec->card->dev,
 593                        "ali_free_channel_pcm: channel %d is not in use.\n",
 594                        channel);
 595                return;
 596        } else {
 597                codec->synth.chmap &= ~(1 << idx);
 598                codec->synth.chcnt--;
 599        }
 600}
 601
 602static void snd_ali_stop_voice(struct snd_ali *codec, unsigned int channel)
 603{
 604        unsigned int mask = 1 << (channel & 0x1f);
 605
 606        dev_dbg(codec->card->dev, "stop_voice: channel=%d\n", channel);
 607        outl(mask, ALI_REG(codec, codec->chregs.regs.stop));
 608}
 609
 610/*
 611 *    S/PDIF Part
 612 */
 613
 614static void snd_ali_delay(struct snd_ali *codec,int interval)
 615{
 616        unsigned long  begintimer,currenttimer;
 617
 618        begintimer   = inl(ALI_REG(codec, ALI_STIMER));
 619        currenttimer = inl(ALI_REG(codec, ALI_STIMER));
 620
 621        while (currenttimer < begintimer + interval) {
 622                if (snd_ali_stimer_ready(codec) < 0)
 623                        break;
 624                currenttimer = inl(ALI_REG(codec,  ALI_STIMER));
 625                cpu_relax();
 626        }
 627}
 628
 629static void snd_ali_detect_spdif_rate(struct snd_ali *codec)
 630{
 631        u16 wval;
 632        u16 count = 0;
 633        u8  bval, R1 = 0, R2;
 634
 635        bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
 636        bval |= 0x1F;
 637        outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL + 1));
 638
 639        while ((R1 < 0x0b || R1 > 0x0e) && R1 != 0x12 && count <= 50000) {
 640                count ++;
 641                snd_ali_delay(codec, 6);
 642                bval = inb(ALI_REG(codec, ALI_SPDIF_CTRL + 1));
 643                R1 = bval & 0x1F;
 644        }
 645
 646        if (count > 50000) {
 647                dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
 648                return;
 649        }
 650
 651        for (count = 0; count <= 50000; count++) {
 652                snd_ali_delay(codec, 6);
 653                bval = inb(ALI_REG(codec,ALI_SPDIF_CTRL + 1));
 654                R2 = bval & 0x1F;
 655                if (R2 != R1)
 656                        R1 = R2;
 657                else
 658                        break;
 659        }
 660
 661        if (count > 50000) {
 662                dev_err(codec->card->dev, "ali_detect_spdif_rate: timeout!\n");
 663                return;
 664        }
 665
 666        if (R2 >= 0x0b && R2 <= 0x0e) {
 667                wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
 668                wval &= 0xe0f0;
 669                wval |= (0x09 << 8) | 0x05;
 670                outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
 671
 672                bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3)) & 0xf0;
 673                outb(bval | 0x02, ALI_REG(codec, ALI_SPDIF_CS + 3));
 674        } else if (R2 == 0x12) {
 675                wval  = inw(ALI_REG(codec, ALI_SPDIF_CTRL + 2));
 676                wval &= 0xe0f0;
 677                wval |= (0x0e << 8) | 0x08;
 678                outw(wval, ALI_REG(codec, ALI_SPDIF_CTRL + 2));
 679
 680                bval  = inb(ALI_REG(codec,ALI_SPDIF_CS + 3)) & 0xf0;
 681                outb(bval | 0x03, ALI_REG(codec, ALI_SPDIF_CS + 3));
 682        }
 683}
 684
 685static unsigned int snd_ali_get_spdif_in_rate(struct snd_ali *codec)
 686{
 687        u32     dwRate;
 688        u8      bval;
 689
 690        bval  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
 691        bval &= 0x7f;
 692        bval |= 0x40;
 693        outb(bval, ALI_REG(codec, ALI_SPDIF_CTRL));
 694
 695        snd_ali_detect_spdif_rate(codec);
 696
 697        bval  = inb(ALI_REG(codec, ALI_SPDIF_CS + 3));
 698        bval &= 0x0f;
 699
 700        switch (bval) {
 701        case 0: dwRate = 44100; break;
 702        case 1: dwRate = 48000; break;
 703        case 2: dwRate = 32000; break;
 704        default: dwRate = 0; break;
 705        }
 706
 707        return dwRate;
 708}
 709
 710static void snd_ali_enable_spdif_in(struct snd_ali *codec)
 711{       
 712        unsigned int dwVal;
 713
 714        dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
 715        dwVal |= ALI_SPDIF_IN_SUPPORT;
 716        outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
 717
 718        dwVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
 719        dwVal |= 0x02;
 720        outb(dwVal, ALI_REG(codec, ALI_SPDIF_CTRL));
 721
 722        snd_ali_enable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);
 723}
 724
 725static void snd_ali_disable_spdif_in(struct snd_ali *codec)
 726{
 727        unsigned int dwVal;
 728        
 729        dwVal = inl(ALI_REG(codec, ALI_GLOBAL_CONTROL));
 730        dwVal &= ~ALI_SPDIF_IN_SUPPORT;
 731        outl(dwVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
 732        
 733        snd_ali_disable_special_channel(codec, ALI_SPDIF_IN_CHANNEL);   
 734}
 735
 736
 737static void snd_ali_set_spdif_out_rate(struct snd_ali *codec, unsigned int rate)
 738{
 739        unsigned char  bVal;
 740        unsigned int  dwRate;
 741        
 742        switch (rate) {
 743        case 32000: dwRate = 0x300; break;
 744        case 48000: dwRate = 0x200; break;
 745        default: dwRate = 0; break;
 746        }
 747        
 748        bVal  = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
 749        bVal &= (unsigned char)(~(1<<6));
 750        
 751        bVal |= 0x80;           /* select right */
 752        outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
 753        outb(dwRate | 0x20, ALI_REG(codec, ALI_SPDIF_CS + 2));
 754        
 755        bVal &= ~0x80;  /* select left */
 756        outb(bVal, ALI_REG(codec, ALI_SPDIF_CTRL));
 757        outw(rate | 0x10, ALI_REG(codec, ALI_SPDIF_CS + 2));
 758}
 759
 760static void snd_ali_enable_spdif_out(struct snd_ali *codec)
 761{
 762        unsigned short wVal;
 763        unsigned char bVal;
 764        struct pci_dev *pci_dev;
 765
 766        pci_dev = codec->pci_m1533;
 767        if (pci_dev == NULL)
 768                return;
 769        pci_read_config_byte(pci_dev, 0x61, &bVal);
 770        bVal |= 0x40;
 771        pci_write_config_byte(pci_dev, 0x61, bVal);
 772        pci_read_config_byte(pci_dev, 0x7d, &bVal);
 773        bVal |= 0x01;
 774        pci_write_config_byte(pci_dev, 0x7d, bVal);
 775
 776        pci_read_config_byte(pci_dev, 0x7e, &bVal);
 777        bVal &= (~0x20);
 778        bVal |= 0x10;
 779        pci_write_config_byte(pci_dev, 0x7e, bVal);
 780
 781        bVal = inb(ALI_REG(codec, ALI_SCTRL));
 782        outb(bVal | ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
 783
 784        bVal = inb(ALI_REG(codec, ALI_SPDIF_CTRL));
 785        outb(bVal & ALI_SPDIF_OUT_CH_STATUS, ALI_REG(codec, ALI_SPDIF_CTRL));
 786   
 787        wVal = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
 788        wVal |= ALI_SPDIF_OUT_SEL_PCM;
 789        outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
 790        snd_ali_disable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
 791}
 792
 793static void snd_ali_enable_spdif_chnout(struct snd_ali *codec)
 794{
 795        unsigned short wVal;
 796
 797        wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
 798        wVal &= ~ALI_SPDIF_OUT_SEL_PCM;
 799        outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
 800/*
 801        wVal = inw(ALI_REG(codec, ALI_SPDIF_CS));
 802        if (flag & ALI_SPDIF_OUT_NON_PCM)
 803                wVal |= 0x0002;
 804        else    
 805                wVal &= (~0x0002);
 806        outw(wVal, ALI_REG(codec, ALI_SPDIF_CS));
 807*/
 808        snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
 809}
 810
 811static void snd_ali_disable_spdif_chnout(struct snd_ali *codec)
 812{
 813        unsigned short wVal;
 814
 815        wVal  = inw(ALI_REG(codec, ALI_GLOBAL_CONTROL));
 816        wVal |= ALI_SPDIF_OUT_SEL_PCM;
 817        outw(wVal, ALI_REG(codec, ALI_GLOBAL_CONTROL));
 818
 819        snd_ali_enable_special_channel(codec, ALI_SPDIF_OUT_CHANNEL);
 820}
 821
 822static void snd_ali_disable_spdif_out(struct snd_ali *codec)
 823{
 824        unsigned char  bVal;
 825
 826        bVal = inb(ALI_REG(codec, ALI_SCTRL));
 827        outb(bVal & ~ALI_SPDIF_OUT_ENABLE, ALI_REG(codec, ALI_SCTRL));
 828
 829        snd_ali_disable_spdif_chnout(codec);
 830}
 831
 832static void snd_ali_update_ptr(struct snd_ali *codec, int channel)
 833{
 834        struct snd_ali_voice *pvoice;
 835        struct snd_ali_channel_control *pchregs;
 836        unsigned int old, mask;
 837
 838        pchregs = &(codec->chregs);
 839
 840        /* check if interrupt occurred for channel */
 841        old  = pchregs->data.aint;
 842        mask = 1U << (channel & 0x1f);
 843
 844        if (!(old & mask))
 845                return;
 846
 847        pvoice = &codec->synth.voices[channel];
 848
 849        udelay(100);
 850        spin_lock(&codec->reg_lock);
 851
 852        if (pvoice->pcm && pvoice->substream) {
 853                /* pcm interrupt */
 854                if (pvoice->running) {
 855                        dev_dbg(codec->card->dev,
 856                                "update_ptr: cso=%4.4x cspf=%d.\n",
 857                                inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2)),
 858                                (inl(ALI_REG(codec, ALI_CSPF)) & mask) == mask);
 859                        spin_unlock(&codec->reg_lock);
 860                        snd_pcm_period_elapsed(pvoice->substream);
 861                        spin_lock(&codec->reg_lock);
 862                } else {
 863                        snd_ali_stop_voice(codec, channel);
 864                        snd_ali_disable_voice_irq(codec, channel);
 865                }       
 866        } else if (codec->synth.voices[channel].synth) {
 867                /* synth interrupt */
 868        } else if (codec->synth.voices[channel].midi) {
 869                /* midi interrupt */
 870        } else {
 871                /* unknown interrupt */
 872                snd_ali_stop_voice(codec, channel);
 873                snd_ali_disable_voice_irq(codec, channel);
 874        }
 875        spin_unlock(&codec->reg_lock);
 876        outl(mask,ALI_REG(codec,pchregs->regs.aint));
 877        pchregs->data.aint = old & (~mask);
 878}
 879
 880static irqreturn_t snd_ali_card_interrupt(int irq, void *dev_id)
 881{
 882        struct snd_ali  *codec = dev_id;
 883        int channel;
 884        unsigned int audio_int;
 885        struct snd_ali_channel_control *pchregs;
 886
 887        if (codec == NULL || !codec->hw_initialized)
 888                return IRQ_NONE;
 889
 890        audio_int = inl(ALI_REG(codec, ALI_MISCINT));
 891        if (!audio_int)
 892                return IRQ_NONE;
 893
 894        pchregs = &(codec->chregs);
 895        if (audio_int & ADDRESS_IRQ) {
 896                /* get interrupt status for all channels */
 897                pchregs->data.aint = inl(ALI_REG(codec, pchregs->regs.aint));
 898                for (channel = 0; channel < ALI_CHANNELS; channel++)
 899                        snd_ali_update_ptr(codec, channel);
 900        }
 901        outl((TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW),
 902                ALI_REG(codec, ALI_MISCINT));
 903
 904        return IRQ_HANDLED;
 905}
 906
 907
 908static struct snd_ali_voice *snd_ali_alloc_voice(struct snd_ali * codec,
 909                                                 int type, int rec, int channel)
 910{
 911        struct snd_ali_voice *pvoice;
 912        int idx;
 913
 914        dev_dbg(codec->card->dev, "alloc_voice: type=%d rec=%d\n", type, rec);
 915
 916        spin_lock_irq(&codec->voice_alloc);
 917        if (type == SNDRV_ALI_VOICE_TYPE_PCM) {
 918                idx = channel > 0 ? snd_ali_alloc_pcm_channel(codec, channel) :
 919                        snd_ali_find_free_channel(codec,rec);
 920                if (idx < 0) {
 921                        dev_err(codec->card->dev, "ali_alloc_voice: err.\n");
 922                        spin_unlock_irq(&codec->voice_alloc);
 923                        return NULL;
 924                }
 925                pvoice = &(codec->synth.voices[idx]);
 926                pvoice->codec = codec;
 927                pvoice->use = 1;
 928                pvoice->pcm = 1;
 929                pvoice->mode = rec;
 930                spin_unlock_irq(&codec->voice_alloc);
 931                return pvoice;
 932        }
 933        spin_unlock_irq(&codec->voice_alloc);
 934        return NULL;
 935}
 936
 937
 938static void snd_ali_free_voice(struct snd_ali * codec,
 939                               struct snd_ali_voice *pvoice)
 940{
 941        void (*private_free)(void *);
 942        void *private_data;
 943
 944        dev_dbg(codec->card->dev, "free_voice: channel=%d\n", pvoice->number);
 945        if (!pvoice->use)
 946                return;
 947        snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
 948        spin_lock_irq(&codec->voice_alloc);
 949        private_free = pvoice->private_free;
 950        private_data = pvoice->private_data;
 951        pvoice->private_free = NULL;
 952        pvoice->private_data = NULL;
 953        if (pvoice->pcm)
 954                snd_ali_free_channel_pcm(codec, pvoice->number);
 955        pvoice->use = pvoice->pcm = pvoice->synth = 0;
 956        pvoice->substream = NULL;
 957        spin_unlock_irq(&codec->voice_alloc);
 958        if (private_free)
 959                private_free(private_data);
 960}
 961
 962
 963static void snd_ali_clear_voices(struct snd_ali *codec,
 964                                 unsigned int v_min,
 965                                 unsigned int v_max)
 966{
 967        unsigned int i;
 968
 969        for (i = v_min; i <= v_max; i++) {
 970                snd_ali_stop_voice(codec, i);
 971                snd_ali_disable_voice_irq(codec, i);
 972        }
 973}
 974
 975static void snd_ali_write_voice_regs(struct snd_ali *codec,
 976                         unsigned int Channel,
 977                         unsigned int LBA,
 978                         unsigned int CSO,
 979                         unsigned int ESO,
 980                         unsigned int DELTA,
 981                         unsigned int ALPHA_FMS,
 982                         unsigned int GVSEL,
 983                         unsigned int PAN,
 984                         unsigned int VOL,
 985                         unsigned int CTRL,
 986                         unsigned int EC)
 987{
 988        unsigned int ctlcmds[4];
 989        
 990        outb((unsigned char)(Channel & 0x001f), ALI_REG(codec, ALI_GC_CIR));
 991
 992        ctlcmds[0] =  (CSO << 16) | (ALPHA_FMS & 0x0000ffff);
 993        ctlcmds[1] =  LBA;
 994        ctlcmds[2] =  (ESO << 16) | (DELTA & 0x0ffff);
 995        ctlcmds[3] =  (GVSEL << 31) |
 996                      ((PAN & 0x0000007f) << 24) |
 997                      ((VOL & 0x000000ff) << 16) |
 998                      ((CTRL & 0x0000000f) << 12) |
 999                      (EC & 0x00000fff);
1000
1001        outb(Channel, ALI_REG(codec, ALI_GC_CIR));
1002
1003        outl(ctlcmds[0], ALI_REG(codec, ALI_CSO_ALPHA_FMS));
1004        outl(ctlcmds[1], ALI_REG(codec, ALI_LBA));
1005        outl(ctlcmds[2], ALI_REG(codec, ALI_ESO_DELTA));
1006        outl(ctlcmds[3], ALI_REG(codec, ALI_GVSEL_PAN_VOC_CTRL_EC));
1007
1008        outl(0x30000000, ALI_REG(codec, ALI_EBUF1));    /* Still Mode */
1009        outl(0x30000000, ALI_REG(codec, ALI_EBUF2));    /* Still Mode */
1010}
1011
1012static unsigned int snd_ali_convert_rate(unsigned int rate, int rec)
1013{
1014        unsigned int delta;
1015
1016        if (rate < 4000)
1017                rate = 4000;
1018        if (rate > 48000)
1019                rate = 48000;
1020
1021        if (rec) {
1022                if (rate == 44100)
1023                        delta = 0x116a;
1024                else if (rate == 8000)
1025                        delta = 0x6000;
1026                else if (rate == 48000)
1027                        delta = 0x1000;
1028                else
1029                        delta = ((48000 << 12) / rate) & 0x0000ffff;
1030        } else {
1031                if (rate == 44100)
1032                        delta = 0xeb3;
1033                else if (rate == 8000)
1034                        delta = 0x2ab;
1035                else if (rate == 48000)
1036                        delta = 0x1000;
1037                else 
1038                        delta = (((rate << 12) + rate) / 48000) & 0x0000ffff;
1039        }
1040
1041        return delta;
1042}
1043
1044static unsigned int snd_ali_control_mode(struct snd_pcm_substream *substream)
1045{
1046        unsigned int CTRL;
1047        struct snd_pcm_runtime *runtime = substream->runtime;
1048
1049        /* set ctrl mode
1050           CTRL default: 8-bit (unsigned) mono, loop mode enabled
1051         */
1052        CTRL = 0x00000001;
1053        if (snd_pcm_format_width(runtime->format) == 16)
1054                CTRL |= 0x00000008;     /* 16-bit data */
1055        if (!snd_pcm_format_unsigned(runtime->format))
1056                CTRL |= 0x00000002;     /* signed data */
1057        if (runtime->channels > 1)
1058                CTRL |= 0x00000004;     /* stereo data */
1059        return CTRL;
1060}
1061
1062/*
1063 *  PCM part
1064 */
1065
1066static int snd_ali_trigger(struct snd_pcm_substream *substream,
1067                               int cmd)
1068                                    
1069{
1070        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1071        struct snd_pcm_substream *s;
1072        unsigned int what, whati;
1073        struct snd_ali_voice *pvoice, *evoice;
1074        unsigned int val;
1075        int do_start;
1076
1077        switch (cmd) {
1078        case SNDRV_PCM_TRIGGER_START:
1079        case SNDRV_PCM_TRIGGER_RESUME:
1080                do_start = 1;
1081                break;
1082        case SNDRV_PCM_TRIGGER_STOP:
1083        case SNDRV_PCM_TRIGGER_SUSPEND:
1084                do_start = 0;
1085                break;
1086        default:
1087                return -EINVAL;
1088        }
1089
1090        what = whati = 0;
1091        snd_pcm_group_for_each_entry(s, substream) {
1092                if ((struct snd_ali *) snd_pcm_substream_chip(s) == codec) {
1093                        pvoice = s->runtime->private_data;
1094                        evoice = pvoice->extra;
1095                        what |= 1 << (pvoice->number & 0x1f);
1096                        if (evoice == NULL)
1097                                whati |= 1 << (pvoice->number & 0x1f);
1098                        else {
1099                                whati |= 1 << (evoice->number & 0x1f);
1100                                what |= 1 << (evoice->number & 0x1f);
1101                        }
1102                        if (do_start) {
1103                                pvoice->running = 1;
1104                                if (evoice != NULL)
1105                                        evoice->running = 1;
1106                        } else {
1107                                pvoice->running = 0;
1108                                if (evoice != NULL)
1109                                        evoice->running = 0;
1110                        }
1111                        snd_pcm_trigger_done(s, substream);
1112                }
1113        }
1114        spin_lock(&codec->reg_lock);
1115        if (!do_start)
1116                outl(what, ALI_REG(codec, ALI_STOP));
1117        val = inl(ALI_REG(codec, ALI_AINTEN));
1118        if (do_start)
1119                val |= whati;
1120        else
1121                val &= ~whati;
1122        outl(val, ALI_REG(codec, ALI_AINTEN));
1123        if (do_start)
1124                outl(what, ALI_REG(codec, ALI_START));
1125        dev_dbg(codec->card->dev, "trigger: what=%xh whati=%xh\n", what, whati);
1126        spin_unlock(&codec->reg_lock);
1127
1128        return 0;
1129}
1130
1131static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream,
1132                                      struct snd_pcm_hw_params *hw_params)
1133{
1134        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1135        struct snd_pcm_runtime *runtime = substream->runtime;
1136        struct snd_ali_voice *pvoice = runtime->private_data;
1137        struct snd_ali_voice *evoice = pvoice->extra;
1138
1139        /* voice management */
1140
1141        if (params_buffer_size(hw_params) / 2 !=
1142            params_period_size(hw_params)) {
1143                if (!evoice) {
1144                        evoice = snd_ali_alloc_voice(codec,
1145                                                     SNDRV_ALI_VOICE_TYPE_PCM,
1146                                                     0, -1);
1147                        if (!evoice)
1148                                return -ENOMEM;
1149                        pvoice->extra = evoice;
1150                        evoice->substream = substream;
1151                }
1152        } else {
1153                if (evoice) {
1154                        snd_ali_free_voice(codec, evoice);
1155                        pvoice->extra = evoice = NULL;
1156                }
1157        }
1158
1159        return 0;
1160}
1161
1162static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
1163{
1164        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1165        struct snd_pcm_runtime *runtime = substream->runtime;
1166        struct snd_ali_voice *pvoice = runtime->private_data;
1167        struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL;
1168
1169        if (evoice) {
1170                snd_ali_free_voice(codec, evoice);
1171                pvoice->extra = NULL;
1172        }
1173        return 0;
1174}
1175
1176static int snd_ali_playback_prepare(struct snd_pcm_substream *substream)
1177{
1178        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1179        struct snd_pcm_runtime *runtime = substream->runtime;
1180        struct snd_ali_voice *pvoice = runtime->private_data;
1181        struct snd_ali_voice *evoice = pvoice->extra;
1182
1183        unsigned int LBA;
1184        unsigned int Delta;
1185        unsigned int ESO;
1186        unsigned int CTRL;
1187        unsigned int GVSEL;
1188        unsigned int PAN;
1189        unsigned int VOL;
1190        unsigned int EC;
1191        
1192        dev_dbg(codec->card->dev, "playback_prepare ...\n");
1193
1194        spin_lock_irq(&codec->reg_lock);        
1195        
1196        /* set Delta (rate) value */
1197        Delta = snd_ali_convert_rate(runtime->rate, 0);
1198
1199        if (pvoice->number == ALI_SPDIF_IN_CHANNEL || 
1200            pvoice->number == ALI_PCM_IN_CHANNEL)
1201                snd_ali_disable_special_channel(codec, pvoice->number);
1202        else if (codec->spdif_support &&
1203                 (inl(ALI_REG(codec, ALI_GLOBAL_CONTROL)) &
1204                  ALI_SPDIF_OUT_CH_ENABLE)
1205                 && pvoice->number == ALI_SPDIF_OUT_CHANNEL) {
1206                snd_ali_set_spdif_out_rate(codec, runtime->rate);
1207                Delta = 0x1000;
1208        }
1209        
1210        /* set Loop Back Address */
1211        LBA = runtime->dma_addr;
1212
1213        /* set interrupt count size */
1214        pvoice->count = runtime->period_size;
1215
1216        /* set target ESO for channel */
1217        pvoice->eso = runtime->buffer_size; 
1218
1219        dev_dbg(codec->card->dev, "playback_prepare: eso=%xh count=%xh\n",
1220                       pvoice->eso, pvoice->count);
1221
1222        /* set ESO to capture first MIDLP interrupt */
1223        ESO = pvoice->eso -1;
1224        /* set ctrl mode */
1225        CTRL = snd_ali_control_mode(substream);
1226
1227        GVSEL = 1;
1228        PAN = 0;
1229        VOL = 0;
1230        EC = 0;
1231        dev_dbg(codec->card->dev, "playback_prepare:\n");
1232        dev_dbg(codec->card->dev,
1233                "ch=%d, Rate=%d Delta=%xh,GVSEL=%xh,PAN=%xh,CTRL=%xh\n",
1234                       pvoice->number,runtime->rate,Delta,GVSEL,PAN,CTRL);
1235        snd_ali_write_voice_regs(codec,
1236                                 pvoice->number,
1237                                 LBA,
1238                                 0,     /* cso */
1239                                 ESO,
1240                                 Delta,
1241                                 0,     /* alpha */
1242                                 GVSEL,
1243                                 PAN,
1244                                 VOL,
1245                                 CTRL,
1246                                 EC);
1247        if (evoice) {
1248                evoice->count = pvoice->count;
1249                evoice->eso = pvoice->count << 1;
1250                ESO = evoice->eso - 1;
1251                snd_ali_write_voice_regs(codec,
1252                                         evoice->number,
1253                                         LBA,
1254                                         0,     /* cso */
1255                                         ESO,
1256                                         Delta,
1257                                         0,     /* alpha */
1258                                         GVSEL,
1259                                         0x7f,
1260                                         0x3ff,
1261                                         CTRL,
1262                                         EC);
1263        }
1264        spin_unlock_irq(&codec->reg_lock);
1265        return 0;
1266}
1267
1268
1269static int snd_ali_prepare(struct snd_pcm_substream *substream)
1270{
1271        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1272        struct snd_pcm_runtime *runtime = substream->runtime;
1273        struct snd_ali_voice *pvoice = runtime->private_data;
1274        unsigned int LBA;
1275        unsigned int Delta;
1276        unsigned int ESO;
1277        unsigned int CTRL;
1278        unsigned int GVSEL;
1279        unsigned int PAN;
1280        unsigned int VOL;
1281        unsigned int EC;
1282        u8       bValue;
1283
1284        spin_lock_irq(&codec->reg_lock);
1285
1286        dev_dbg(codec->card->dev, "ali_prepare...\n");
1287
1288        snd_ali_enable_special_channel(codec,pvoice->number);
1289
1290        Delta = (pvoice->number == ALI_MODEM_IN_CHANNEL ||
1291                 pvoice->number == ALI_MODEM_OUT_CHANNEL) ? 
1292                0x1000 : snd_ali_convert_rate(runtime->rate, pvoice->mode);
1293
1294        /* Prepare capture intr channel */
1295        if (pvoice->number == ALI_SPDIF_IN_CHANNEL) {
1296
1297                unsigned int rate;
1298                
1299                spin_unlock_irq(&codec->reg_lock);
1300                if (codec->revision != ALI_5451_V02)
1301                        return -1;
1302
1303                rate = snd_ali_get_spdif_in_rate(codec);
1304                if (rate == 0) {
1305                        dev_warn(codec->card->dev,
1306                                 "ali_capture_prepare: spdif rate detect err!\n");
1307                        rate = 48000;
1308                }
1309                spin_lock_irq(&codec->reg_lock);
1310                bValue = inb(ALI_REG(codec,ALI_SPDIF_CTRL));
1311                if (bValue & 0x10) {
1312                        outb(bValue,ALI_REG(codec,ALI_SPDIF_CTRL));
1313                        dev_warn(codec->card->dev,
1314                                 "clear SPDIF parity error flag.\n");
1315                }
1316
1317                if (rate != 48000)
1318                        Delta = ((rate << 12) / runtime->rate) & 0x00ffff;
1319        }
1320
1321        /* set target ESO for channel  */
1322        pvoice->eso = runtime->buffer_size; 
1323
1324        /* set interrupt count size  */
1325        pvoice->count = runtime->period_size;
1326
1327        /* set Loop Back Address  */
1328        LBA = runtime->dma_addr;
1329
1330        /* set ESO to capture first MIDLP interrupt  */
1331        ESO = pvoice->eso - 1;
1332        CTRL = snd_ali_control_mode(substream);
1333        GVSEL = 0;
1334        PAN = 0x00;
1335        VOL = 0x00;
1336        EC = 0;
1337
1338        snd_ali_write_voice_regs(    codec,
1339                                     pvoice->number,
1340                                     LBA,
1341                                     0, /* cso */
1342                                     ESO,
1343                                     Delta,
1344                                     0, /* alpha */
1345                                     GVSEL,
1346                                     PAN,
1347                                     VOL,
1348                                     CTRL,
1349                                     EC);
1350
1351        spin_unlock_irq(&codec->reg_lock);
1352
1353        return 0;
1354}
1355
1356
1357static snd_pcm_uframes_t
1358snd_ali_playback_pointer(struct snd_pcm_substream *substream)
1359{
1360        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1361        struct snd_pcm_runtime *runtime = substream->runtime;
1362        struct snd_ali_voice *pvoice = runtime->private_data;
1363        unsigned int cso;
1364
1365        spin_lock(&codec->reg_lock);
1366        if (!pvoice->running) {
1367                spin_unlock(&codec->reg_lock);
1368                return 0;
1369        }
1370        outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1371        cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1372        spin_unlock(&codec->reg_lock);
1373        dev_dbg(codec->card->dev, "playback pointer returned cso=%xh.\n", cso);
1374
1375        cso %= runtime->buffer_size;
1376        return cso;
1377}
1378
1379
1380static snd_pcm_uframes_t snd_ali_pointer(struct snd_pcm_substream *substream)
1381{
1382        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1383        struct snd_pcm_runtime *runtime = substream->runtime;
1384        struct snd_ali_voice *pvoice = runtime->private_data;
1385        unsigned int cso;
1386
1387        spin_lock(&codec->reg_lock);
1388        if (!pvoice->running) {
1389                spin_unlock(&codec->reg_lock);
1390                return 0;
1391        }
1392        outb(pvoice->number, ALI_REG(codec, ALI_GC_CIR));
1393        cso = inw(ALI_REG(codec, ALI_CSO_ALPHA_FMS + 2));
1394        spin_unlock(&codec->reg_lock);
1395
1396        cso %= runtime->buffer_size;
1397        return cso;
1398}
1399
1400static const struct snd_pcm_hardware snd_ali_playback =
1401{
1402        .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1403                         SNDRV_PCM_INFO_BLOCK_TRANSFER |
1404                         SNDRV_PCM_INFO_MMAP_VALID |
1405                         SNDRV_PCM_INFO_RESUME |
1406                         SNDRV_PCM_INFO_SYNC_START),
1407        .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1408                         SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1409        .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1410        .rate_min =             4000,
1411        .rate_max =             48000,
1412        .channels_min =         1,
1413        .channels_max =         2,
1414        .buffer_bytes_max =     (256*1024),
1415        .period_bytes_min =     64,
1416        .period_bytes_max =     (256*1024),
1417        .periods_min =          1,
1418        .periods_max =          1024,
1419        .fifo_size =            0,
1420};
1421
1422/*
1423 *  Capture support device description
1424 */
1425
1426static const struct snd_pcm_hardware snd_ali_capture =
1427{
1428        .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1429                         SNDRV_PCM_INFO_BLOCK_TRANSFER |
1430                         SNDRV_PCM_INFO_MMAP_VALID |
1431                         SNDRV_PCM_INFO_RESUME |
1432                         SNDRV_PCM_INFO_SYNC_START),
1433        .formats =      (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1434                         SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1435        .rates =        SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1436        .rate_min =             4000,
1437        .rate_max =             48000,
1438        .channels_min =         1,
1439        .channels_max =         2,
1440        .buffer_bytes_max =     (128*1024),
1441        .period_bytes_min =     64,
1442        .period_bytes_max =     (128*1024),
1443        .periods_min =          1,
1444        .periods_max =          1024,
1445        .fifo_size =            0,
1446};
1447
1448static void snd_ali_pcm_free_substream(struct snd_pcm_runtime *runtime)
1449{
1450        struct snd_ali_voice *pvoice = runtime->private_data;
1451
1452        if (pvoice)
1453                snd_ali_free_voice(pvoice->codec, pvoice);
1454}
1455
1456static int snd_ali_open(struct snd_pcm_substream *substream, int rec,
1457                        int channel, const struct snd_pcm_hardware *phw)
1458{
1459        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1460        struct snd_pcm_runtime *runtime = substream->runtime;
1461        struct snd_ali_voice *pvoice;
1462
1463        pvoice = snd_ali_alloc_voice(codec, SNDRV_ALI_VOICE_TYPE_PCM, rec,
1464                                     channel);
1465        if (!pvoice)
1466                return -EAGAIN;
1467
1468        pvoice->substream = substream;
1469        runtime->private_data = pvoice;
1470        runtime->private_free = snd_ali_pcm_free_substream;
1471
1472        runtime->hw = *phw;
1473        snd_pcm_set_sync(substream);
1474        snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
1475                                     0, 64*1024);
1476        return 0;
1477}
1478
1479static int snd_ali_playback_open(struct snd_pcm_substream *substream)
1480{
1481        return snd_ali_open(substream, 0, -1, &snd_ali_playback);
1482}
1483
1484static int snd_ali_capture_open(struct snd_pcm_substream *substream)
1485{
1486        return snd_ali_open(substream, 1, -1, &snd_ali_capture);
1487}
1488
1489static int snd_ali_playback_close(struct snd_pcm_substream *substream)
1490{
1491        return 0;
1492}
1493
1494static int snd_ali_close(struct snd_pcm_substream *substream)
1495{
1496        struct snd_ali *codec = snd_pcm_substream_chip(substream);
1497        struct snd_ali_voice *pvoice = substream->runtime->private_data;
1498
1499        snd_ali_disable_special_channel(codec,pvoice->number);
1500
1501        return 0;
1502}
1503
1504static const struct snd_pcm_ops snd_ali_playback_ops = {
1505        .open =         snd_ali_playback_open,
1506        .close =        snd_ali_playback_close,
1507        .hw_params =    snd_ali_playback_hw_params,
1508        .hw_free =      snd_ali_playback_hw_free,
1509        .prepare =      snd_ali_playback_prepare,
1510        .trigger =      snd_ali_trigger,
1511        .pointer =      snd_ali_playback_pointer,
1512};
1513
1514static const struct snd_pcm_ops snd_ali_capture_ops = {
1515        .open =         snd_ali_capture_open,
1516        .close =        snd_ali_close,
1517        .prepare =      snd_ali_prepare,
1518        .trigger =      snd_ali_trigger,
1519        .pointer =      snd_ali_pointer,
1520};
1521
1522/*
1523 * Modem PCM
1524 */
1525
1526static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
1527                                 struct snd_pcm_hw_params *hw_params)
1528{
1529        struct snd_ali *chip = snd_pcm_substream_chip(substream);
1530        unsigned int modem_num = chip->num_of_codecs - 1;
1531        snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE,
1532                       params_rate(hw_params));
1533        snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
1534        return 0;
1535}
1536
1537static const struct snd_pcm_hardware snd_ali_modem =
1538{
1539        .info =         (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1540                         SNDRV_PCM_INFO_BLOCK_TRANSFER |
1541                         SNDRV_PCM_INFO_MMAP_VALID |
1542                         SNDRV_PCM_INFO_RESUME |
1543                         SNDRV_PCM_INFO_SYNC_START),
1544        .formats =      SNDRV_PCM_FMTBIT_S16_LE,
1545        .rates =        (SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000 |
1546                         SNDRV_PCM_RATE_16000),
1547        .rate_min =             8000,
1548        .rate_max =             16000,
1549        .channels_min =         1,
1550        .channels_max =         1,
1551        .buffer_bytes_max =     (256*1024),
1552        .period_bytes_min =     64,
1553        .period_bytes_max =     (256*1024),
1554        .periods_min =          1,
1555        .periods_max =          1024,
1556        .fifo_size =            0,
1557};
1558
1559static int snd_ali_modem_open(struct snd_pcm_substream *substream, int rec,
1560                              int channel)
1561{
1562        static const unsigned int rates[] = {8000, 9600, 12000, 16000};
1563        static const struct snd_pcm_hw_constraint_list hw_constraint_rates = {
1564                .count = ARRAY_SIZE(rates),
1565                .list = rates,
1566                .mask = 0,
1567        };
1568        int err = snd_ali_open(substream, rec, channel, &snd_ali_modem);
1569
1570        if (err)
1571                return err;
1572        return snd_pcm_hw_constraint_list(substream->runtime, 0,
1573                        SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
1574}
1575
1576static int snd_ali_modem_playback_open(struct snd_pcm_substream *substream)
1577{
1578        return snd_ali_modem_open(substream, 0, ALI_MODEM_OUT_CHANNEL);
1579}
1580
1581static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
1582{
1583        return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
1584}
1585
1586static const struct snd_pcm_ops snd_ali_modem_playback_ops = {
1587        .open =         snd_ali_modem_playback_open,
1588        .close =        snd_ali_close,
1589        .hw_params =    snd_ali_modem_hw_params,
1590        .prepare =      snd_ali_prepare,
1591        .trigger =      snd_ali_trigger,
1592        .pointer =      snd_ali_pointer,
1593};
1594
1595static const struct snd_pcm_ops snd_ali_modem_capture_ops = {
1596        .open =         snd_ali_modem_capture_open,
1597        .close =        snd_ali_close,
1598        .hw_params =    snd_ali_modem_hw_params,
1599        .prepare =      snd_ali_prepare,
1600        .trigger =      snd_ali_trigger,
1601        .pointer =      snd_ali_pointer,
1602};
1603
1604
1605struct ali_pcm_description {
1606        char *name;
1607        unsigned int playback_num;
1608        unsigned int capture_num;
1609        const struct snd_pcm_ops *playback_ops;
1610        const struct snd_pcm_ops *capture_ops;
1611        unsigned short class;
1612};
1613
1614
1615static void snd_ali_pcm_free(struct snd_pcm *pcm)
1616{
1617        struct snd_ali *codec = pcm->private_data;
1618        codec->pcm[pcm->device] = NULL;
1619}
1620
1621
1622static int snd_ali_pcm(struct snd_ali *codec, int device,
1623                       struct ali_pcm_description *desc)
1624{
1625        struct snd_pcm *pcm;
1626        int err;
1627
1628        err = snd_pcm_new(codec->card, desc->name, device,
1629                          desc->playback_num, desc->capture_num, &pcm);
1630        if (err < 0) {
1631                dev_err(codec->card->dev,
1632                        "snd_ali_pcm: err called snd_pcm_new.\n");
1633                return err;
1634        }
1635        pcm->private_data = codec;
1636        pcm->private_free = snd_ali_pcm_free;
1637        if (desc->playback_ops)
1638                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1639                                desc->playback_ops);
1640        if (desc->capture_ops)
1641                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1642                                desc->capture_ops);
1643
1644        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
1645                                       &codec->pci->dev, 64*1024, 128*1024);
1646
1647        pcm->info_flags = 0;
1648        pcm->dev_class = desc->class;
1649        pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
1650        strcpy(pcm->name, desc->name);
1651        codec->pcm[0] = pcm;
1652        return 0;
1653}
1654
1655static struct ali_pcm_description ali_pcms[] = {
1656        { .name = "ALI 5451",
1657          .playback_num = ALI_CHANNELS,
1658          .capture_num = 1,
1659          .playback_ops = &snd_ali_playback_ops,
1660          .capture_ops = &snd_ali_capture_ops
1661        },
1662        { .name = "ALI 5451 modem",
1663          .playback_num = 1,
1664          .capture_num = 1,
1665          .playback_ops = &snd_ali_modem_playback_ops,
1666          .capture_ops = &snd_ali_modem_capture_ops,
1667          .class = SNDRV_PCM_CLASS_MODEM
1668        }
1669};
1670
1671static int snd_ali_build_pcms(struct snd_ali *codec)
1672{
1673        int i, err;
1674        for (i = 0; i < codec->num_of_codecs && i < ARRAY_SIZE(ali_pcms); i++) {
1675                err = snd_ali_pcm(codec, i, &ali_pcms[i]);
1676                if (err < 0)
1677                        return err;
1678        }
1679        return 0;
1680}
1681
1682
1683#define ALI5451_SPDIF(xname, xindex, value) \
1684{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex,\
1685.info = snd_ali5451_spdif_info, .get = snd_ali5451_spdif_get, \
1686.put = snd_ali5451_spdif_put, .private_value = value}
1687
1688#define snd_ali5451_spdif_info          snd_ctl_boolean_mono_info
1689
1690static int snd_ali5451_spdif_get(struct snd_kcontrol *kcontrol,
1691                                 struct snd_ctl_elem_value *ucontrol)
1692{
1693        struct snd_ali *codec = kcontrol->private_data;
1694        unsigned int spdif_enable;
1695
1696        spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1697
1698        spin_lock_irq(&codec->reg_lock);
1699        switch (kcontrol->private_value) {
1700        case 0:
1701                spdif_enable = (codec->spdif_mask & 0x02) ? 1 : 0;
1702                break;
1703        case 1:
1704                spdif_enable = ((codec->spdif_mask & 0x02) &&
1705                          (codec->spdif_mask & 0x04)) ? 1 : 0;
1706                break;
1707        case 2:
1708                spdif_enable = (codec->spdif_mask & 0x01) ? 1 : 0;
1709                break;
1710        default:
1711                break;
1712        }
1713        ucontrol->value.integer.value[0] = spdif_enable;
1714        spin_unlock_irq(&codec->reg_lock);
1715        return 0;
1716}
1717
1718static int snd_ali5451_spdif_put(struct snd_kcontrol *kcontrol,
1719                                 struct snd_ctl_elem_value *ucontrol)
1720{
1721        struct snd_ali *codec = kcontrol->private_data;
1722        unsigned int change = 0, spdif_enable = 0;
1723
1724        spdif_enable = ucontrol->value.integer.value[0] ? 1 : 0;
1725
1726        spin_lock_irq(&codec->reg_lock);
1727        switch (kcontrol->private_value) {
1728        case 0:
1729                change = (codec->spdif_mask & 0x02) ? 1 : 0;
1730                change = change ^ spdif_enable;
1731                if (change) {
1732                        if (spdif_enable) {
1733                                codec->spdif_mask |= 0x02;
1734                                snd_ali_enable_spdif_out(codec);
1735                        } else {
1736                                codec->spdif_mask &= ~(0x02);
1737                                codec->spdif_mask &= ~(0x04);
1738                                snd_ali_disable_spdif_out(codec);
1739                        }
1740                }
1741                break;
1742        case 1: 
1743                change = (codec->spdif_mask & 0x04) ? 1 : 0;
1744                change = change ^ spdif_enable;
1745                if (change && (codec->spdif_mask & 0x02)) {
1746                        if (spdif_enable) {
1747                                codec->spdif_mask |= 0x04;
1748                                snd_ali_enable_spdif_chnout(codec);
1749                        } else {
1750                                codec->spdif_mask &= ~(0x04);
1751                                snd_ali_disable_spdif_chnout(codec);
1752                        }
1753                }
1754                break;
1755        case 2:
1756                change = (codec->spdif_mask & 0x01) ? 1 : 0;
1757                change = change ^ spdif_enable;
1758                if (change) {
1759                        if (spdif_enable) {
1760                                codec->spdif_mask |= 0x01;
1761                                snd_ali_enable_spdif_in(codec);
1762                        } else {
1763                                codec->spdif_mask &= ~(0x01);
1764                                snd_ali_disable_spdif_in(codec);
1765                        }
1766                }
1767                break;
1768        default:
1769                break;
1770        }
1771        spin_unlock_irq(&codec->reg_lock);
1772        
1773        return change;
1774}
1775
1776static const struct snd_kcontrol_new snd_ali5451_mixer_spdif[] = {
1777        /* spdif aplayback switch */
1778        /* FIXME: "IEC958 Playback Switch" may conflict with one on ac97_codec */
1779        ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Output ",NONE,SWITCH), 0, 0),
1780        /* spdif out to spdif channel */
1781        ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("Channel Output ",NONE,SWITCH), 0, 1),
1782        /* spdif in from spdif channel */
1783        ALI5451_SPDIF(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), 0, 2)
1784};
1785
1786static int snd_ali_mixer(struct snd_ali *codec)
1787{
1788        struct snd_ac97_template ac97;
1789        unsigned int idx;
1790        int i, err;
1791        static const struct snd_ac97_bus_ops ops = {
1792                .write = snd_ali_codec_write,
1793                .read = snd_ali_codec_read,
1794        };
1795
1796        err = snd_ac97_bus(codec->card, 0, &ops, codec, &codec->ac97_bus);
1797        if (err < 0)
1798                return err;
1799
1800        memset(&ac97, 0, sizeof(ac97));
1801        ac97.private_data = codec;
1802
1803        for (i = 0; i < codec->num_of_codecs; i++) {
1804                ac97.num = i;
1805                err = snd_ac97_mixer(codec->ac97_bus, &ac97, &codec->ac97[i]);
1806                if (err < 0) {
1807                        dev_err(codec->card->dev,
1808                                   "ali mixer %d creating error.\n", i);
1809                        if (i == 0)
1810                                return err;
1811                        codec->num_of_codecs = 1;
1812                        break;
1813                }
1814        }
1815
1816        if (codec->spdif_support) {
1817                for (idx = 0; idx < ARRAY_SIZE(snd_ali5451_mixer_spdif); idx++) {
1818                        err = snd_ctl_add(codec->card,
1819                                          snd_ctl_new1(&snd_ali5451_mixer_spdif[idx], codec));
1820                        if (err < 0)
1821                                return err;
1822                }
1823        }
1824        return 0;
1825}
1826
1827#ifdef CONFIG_PM_SLEEP
1828static int ali_suspend(struct device *dev)
1829{
1830        struct snd_card *card = dev_get_drvdata(dev);
1831        struct snd_ali *chip = card->private_data;
1832        struct snd_ali_image *im;
1833        int i, j;
1834
1835        im = chip->image;
1836        if (!im)
1837                return 0;
1838
1839        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1840        for (i = 0; i < chip->num_of_codecs; i++)
1841                snd_ac97_suspend(chip->ac97[i]);
1842
1843        spin_lock_irq(&chip->reg_lock);
1844        
1845        im->regs[ALI_MISCINT >> 2] = inl(ALI_REG(chip, ALI_MISCINT));
1846        /* im->regs[ALI_START >> 2] = inl(ALI_REG(chip, ALI_START)); */
1847        im->regs[ALI_STOP >> 2] = inl(ALI_REG(chip, ALI_STOP));
1848        
1849        /* disable all IRQ bits */
1850        outl(0, ALI_REG(chip, ALI_MISCINT));
1851        
1852        for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1853                if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP))
1854                        continue;
1855                im->regs[i] = inl(ALI_REG(chip, i*4));
1856        }
1857        
1858        for (i = 0; i < ALI_CHANNELS; i++) {
1859                outb(i, ALI_REG(chip, ALI_GC_CIR));
1860                for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1861                        im->channel_regs[i][j] = inl(ALI_REG(chip, j*4 + 0xe0));
1862        }
1863
1864        /* stop all HW channel */
1865        outl(0xffffffff, ALI_REG(chip, ALI_STOP));
1866
1867        spin_unlock_irq(&chip->reg_lock);
1868        return 0;
1869}
1870
1871static int ali_resume(struct device *dev)
1872{
1873        struct snd_card *card = dev_get_drvdata(dev);
1874        struct snd_ali *chip = card->private_data;
1875        struct snd_ali_image *im;
1876        int i, j;
1877
1878        im = chip->image;
1879        if (!im)
1880                return 0;
1881
1882        spin_lock_irq(&chip->reg_lock);
1883        
1884        for (i = 0; i < ALI_CHANNELS; i++) {
1885                outb(i, ALI_REG(chip, ALI_GC_CIR));
1886                for (j = 0; j < ALI_CHANNEL_REGS; j++) 
1887                        outl(im->channel_regs[i][j], ALI_REG(chip, j*4 + 0xe0));
1888        }
1889        
1890        for (i = 0; i < ALI_GLOBAL_REGS; i++) { 
1891                if ((i*4 == ALI_MISCINT) || (i*4 == ALI_STOP) ||
1892                    (i*4 == ALI_START))
1893                        continue;
1894                outl(im->regs[i], ALI_REG(chip, i*4));
1895        }
1896        
1897        /* start HW channel */
1898        outl(im->regs[ALI_START >> 2], ALI_REG(chip, ALI_START));
1899        /* restore IRQ enable bits */
1900        outl(im->regs[ALI_MISCINT >> 2], ALI_REG(chip, ALI_MISCINT));
1901        
1902        spin_unlock_irq(&chip->reg_lock);
1903
1904        for (i = 0 ; i < chip->num_of_codecs; i++)
1905                snd_ac97_resume(chip->ac97[i]);
1906        
1907        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1908        return 0;
1909}
1910
1911static SIMPLE_DEV_PM_OPS(ali_pm, ali_suspend, ali_resume);
1912#define ALI_PM_OPS      &ali_pm
1913#else
1914#define ALI_PM_OPS      NULL
1915#endif /* CONFIG_PM_SLEEP */
1916
1917static int snd_ali_free(struct snd_ali * codec)
1918{
1919        if (codec->hw_initialized)
1920                snd_ali_disable_address_interrupt(codec);
1921        if (codec->irq >= 0)
1922                free_irq(codec->irq, codec);
1923        if (codec->port)
1924                pci_release_regions(codec->pci);
1925        pci_disable_device(codec->pci);
1926#ifdef CONFIG_PM_SLEEP
1927        kfree(codec->image);
1928#endif
1929        pci_dev_put(codec->pci_m1533);
1930        pci_dev_put(codec->pci_m7101);
1931        kfree(codec);
1932        return 0;
1933}
1934
1935static int snd_ali_chip_init(struct snd_ali *codec)
1936{
1937        unsigned int legacy;
1938        unsigned char temp;
1939        struct pci_dev *pci_dev;
1940
1941        dev_dbg(codec->card->dev, "chip initializing ...\n");
1942
1943        if (snd_ali_reset_5451(codec)) {
1944                dev_err(codec->card->dev, "ali_chip_init: reset 5451 error.\n");
1945                return -1;
1946        }
1947
1948        if (codec->revision == ALI_5451_V02) {
1949                pci_dev = codec->pci_m1533;
1950                pci_read_config_byte(pci_dev, 0x59, &temp);
1951                temp |= 0x80;
1952                pci_write_config_byte(pci_dev, 0x59, temp);
1953        
1954                pci_dev = codec->pci_m7101;
1955                pci_read_config_byte(pci_dev, 0xb8, &temp);
1956                temp |= 0x20;
1957                pci_write_config_byte(pci_dev, 0xB8, temp);
1958        }
1959
1960        pci_read_config_dword(codec->pci, 0x44, &legacy);
1961        legacy &= 0xff00ff00;
1962        legacy |= 0x000800aa;
1963        pci_write_config_dword(codec->pci, 0x44, legacy);
1964
1965        outl(0x80000001, ALI_REG(codec, ALI_GLOBAL_CONTROL));
1966        outl(0x00000000, ALI_REG(codec, ALI_AINTEN));
1967        outl(0xffffffff, ALI_REG(codec, ALI_AINT));
1968        outl(0x00000000, ALI_REG(codec, ALI_VOLUME));
1969        outb(0x10,       ALI_REG(codec, ALI_MPUR2));
1970
1971        codec->ac97_ext_id = snd_ali_codec_peek(codec, 0, AC97_EXTENDED_ID);
1972        codec->ac97_ext_status = snd_ali_codec_peek(codec, 0,
1973                                                    AC97_EXTENDED_STATUS);
1974        if (codec->spdif_support) {
1975                snd_ali_enable_spdif_out(codec);
1976                codec->spdif_mask = 0x00000002;
1977        }
1978
1979        codec->num_of_codecs = 1;
1980
1981        /* secondary codec - modem */
1982        if (inl(ALI_REG(codec, ALI_SCTRL)) & ALI_SCTRL_CODEC2_READY) {
1983                codec->num_of_codecs++;
1984                outl(inl(ALI_REG(codec, ALI_SCTRL)) |
1985                     (ALI_SCTRL_LINE_IN2 | ALI_SCTRL_GPIO_IN2 |
1986                      ALI_SCTRL_LINE_OUT_EN),
1987                     ALI_REG(codec, ALI_SCTRL));
1988        }
1989
1990        dev_dbg(codec->card->dev, "chip initialize succeed.\n");
1991        return 0;
1992
1993}
1994
1995/* proc for register dump */
1996static void snd_ali_proc_read(struct snd_info_entry *entry,
1997                              struct snd_info_buffer *buf)
1998{
1999        struct snd_ali *codec = entry->private_data;
2000        int i;
2001        for (i = 0; i < 256 ; i+= 4)
2002                snd_iprintf(buf, "%02x: %08x\n", i, inl(ALI_REG(codec, i)));
2003}
2004
2005static void snd_ali_proc_init(struct snd_ali *codec)
2006{
2007        snd_card_ro_proc_new(codec->card, "ali5451", codec, snd_ali_proc_read);
2008}
2009
2010static int snd_ali_resources(struct snd_ali *codec)
2011{
2012        int err;
2013
2014        dev_dbg(codec->card->dev, "resources allocation ...\n");
2015        err = pci_request_regions(codec->pci, "ALI 5451");
2016        if (err < 0)
2017                return err;
2018        codec->port = pci_resource_start(codec->pci, 0);
2019
2020        if (request_irq(codec->pci->irq, snd_ali_card_interrupt,
2021                        IRQF_SHARED, KBUILD_MODNAME, codec)) {
2022                dev_err(codec->card->dev, "Unable to request irq.\n");
2023                return -EBUSY;
2024        }
2025        codec->irq = codec->pci->irq;
2026        codec->card->sync_irq = codec->irq;
2027        dev_dbg(codec->card->dev, "resources allocated.\n");
2028        return 0;
2029}
2030static int snd_ali_dev_free(struct snd_device *device)
2031{
2032        struct snd_ali *codec = device->device_data;
2033        snd_ali_free(codec);
2034        return 0;
2035}
2036
2037static int snd_ali_create(struct snd_card *card,
2038                          struct pci_dev *pci,
2039                          int pcm_streams,
2040                          int spdif_support,
2041                          struct snd_ali **r_ali)
2042{
2043        struct snd_ali *codec;
2044        int i, err;
2045        unsigned short cmdw;
2046        static const struct snd_device_ops ops = {
2047                .dev_free = snd_ali_dev_free,
2048        };
2049
2050        *r_ali = NULL;
2051
2052        dev_dbg(card->dev, "creating ...\n");
2053
2054        /* enable PCI device */
2055        err = pci_enable_device(pci);
2056        if (err < 0)
2057                return err;
2058        /* check, if we can restrict PCI DMA transfers to 31 bits */
2059        if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(31))) {
2060                dev_err(card->dev,
2061                        "architecture does not support 31bit PCI busmaster DMA\n");
2062                pci_disable_device(pci);
2063                return -ENXIO;
2064        }
2065
2066        codec = kzalloc(sizeof(*codec), GFP_KERNEL);
2067        if (!codec) {
2068                pci_disable_device(pci);
2069                return -ENOMEM;
2070        }
2071
2072        spin_lock_init(&codec->reg_lock);
2073        spin_lock_init(&codec->voice_alloc);
2074
2075        codec->card = card;
2076        codec->pci = pci;
2077        codec->irq = -1;
2078        codec->revision = pci->revision;
2079        codec->spdif_support = spdif_support;
2080
2081        if (pcm_streams < 1)
2082                pcm_streams = 1;
2083        if (pcm_streams > 32)
2084                pcm_streams = 32;
2085        
2086        pci_set_master(pci);
2087        pci_read_config_word(pci, PCI_COMMAND, &cmdw);
2088        if ((cmdw & PCI_COMMAND_IO) != PCI_COMMAND_IO) {
2089                cmdw |= PCI_COMMAND_IO;
2090                pci_write_config_word(pci, PCI_COMMAND, cmdw);
2091        }
2092        pci_set_master(pci);
2093        
2094        if (snd_ali_resources(codec)) {
2095                snd_ali_free(codec);
2096                return -EBUSY;
2097        }
2098
2099        codec->synth.chmap = 0;
2100        codec->synth.chcnt = 0;
2101        codec->spdif_mask = 0;
2102        codec->synth.synthcount = 0;
2103
2104        if (codec->revision == ALI_5451_V02)
2105                codec->chregs.regs.ac97read = ALI_AC97_WRITE;
2106        else
2107                codec->chregs.regs.ac97read = ALI_AC97_READ;
2108        codec->chregs.regs.ac97write = ALI_AC97_WRITE;
2109
2110        codec->chregs.regs.start  = ALI_START;
2111        codec->chregs.regs.stop   = ALI_STOP;
2112        codec->chregs.regs.aint   = ALI_AINT;
2113        codec->chregs.regs.ainten = ALI_AINTEN;
2114
2115        codec->chregs.data.start  = 0x00;
2116        codec->chregs.data.stop   = 0x00;
2117        codec->chregs.data.aint   = 0x00;
2118        codec->chregs.data.ainten = 0x00;
2119
2120        /* M1533: southbridge */
2121        codec->pci_m1533 = pci_get_device(0x10b9, 0x1533, NULL);
2122        if (!codec->pci_m1533) {
2123                dev_err(card->dev, "cannot find ALi 1533 chip.\n");
2124                snd_ali_free(codec);
2125                return -ENODEV;
2126        }
2127        /* M7101: power management */
2128        codec->pci_m7101 = pci_get_device(0x10b9, 0x7101, NULL);
2129        if (!codec->pci_m7101 && codec->revision == ALI_5451_V02) {
2130                dev_err(card->dev, "cannot find ALi 7101 chip.\n");
2131                snd_ali_free(codec);
2132                return -ENODEV;
2133        }
2134
2135        dev_dbg(card->dev, "snd_device_new is called.\n");
2136        err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, codec, &ops);
2137        if (err < 0) {
2138                snd_ali_free(codec);
2139                return err;
2140        }
2141
2142        /* initialise synth voices*/
2143        for (i = 0; i < ALI_CHANNELS; i++)
2144                codec->synth.voices[i].number = i;
2145
2146        err = snd_ali_chip_init(codec);
2147        if (err < 0) {
2148                dev_err(card->dev, "ali create: chip init error.\n");
2149                return err;
2150        }
2151
2152#ifdef CONFIG_PM_SLEEP
2153        codec->image = kmalloc(sizeof(*codec->image), GFP_KERNEL);
2154        if (!codec->image)
2155                dev_warn(card->dev, "can't allocate apm buffer\n");
2156#endif
2157
2158        snd_ali_enable_address_interrupt(codec);
2159        codec->hw_initialized = 1;
2160
2161        *r_ali = codec;
2162        dev_dbg(card->dev, "created.\n");
2163        return 0;
2164}
2165
2166static int snd_ali_probe(struct pci_dev *pci,
2167                         const struct pci_device_id *pci_id)
2168{
2169        struct snd_card *card;
2170        struct snd_ali *codec;
2171        int err;
2172
2173        dev_dbg(&pci->dev, "probe ...\n");
2174
2175        err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
2176        if (err < 0)
2177                return err;
2178
2179        err = snd_ali_create(card, pci, pcm_channels, spdif, &codec);
2180        if (err < 0)
2181                goto error;
2182        card->private_data = codec;
2183
2184        dev_dbg(&pci->dev, "mixer building ...\n");
2185        err = snd_ali_mixer(codec);
2186        if (err < 0)
2187                goto error;
2188        
2189        dev_dbg(&pci->dev, "pcm building ...\n");
2190        err = snd_ali_build_pcms(codec);
2191        if (err < 0)
2192                goto error;
2193
2194        snd_ali_proc_init(codec);
2195
2196        strcpy(card->driver, "ALI5451");
2197        strcpy(card->shortname, "ALI 5451");
2198        
2199        sprintf(card->longname, "%s at 0x%lx, irq %i",
2200                card->shortname, codec->port, codec->irq);
2201
2202        dev_dbg(&pci->dev, "register card.\n");
2203        err = snd_card_register(card);
2204        if (err < 0)
2205                goto error;
2206
2207        pci_set_drvdata(pci, card);
2208        return 0;
2209
2210 error:
2211        snd_card_free(card);
2212        return err;
2213}
2214
2215static void snd_ali_remove(struct pci_dev *pci)
2216{
2217        snd_card_free(pci_get_drvdata(pci));
2218}
2219
2220static struct pci_driver ali5451_driver = {
2221        .name = KBUILD_MODNAME,
2222        .id_table = snd_ali_ids,
2223        .probe = snd_ali_probe,
2224        .remove = snd_ali_remove,
2225        .driver = {
2226                .pm = ALI_PM_OPS,
2227        },
2228};                                
2229
2230module_pci_driver(ali5451_driver);
2231