sound/parisc/harmony.c

   1 /*
   2  *  Harmony chipset driver
   3  *
   4  *      This is a sound driver for ASP's and Lasi's Harmony sound chip
   5  *      and is unlikely to be used for anything other than on a HP PA-RISC.
   6  *
   7  *      Harmony is found in HP 712s, 715/new and many other GSC based machines.
   8  *      On older 715 machines you'll find the technically identical chip
   9  *      called 'Vivace'. Both Harmony and Vicace are supported by this driver.
  10  *
  11  *  this ALSA driver is based on OSS driver by:
  12  *      Copyright 2000 (c) Linuxcare Canada, Alex deVries <alex@linuxcare.com>
  13  *      Copyright 2000-2002 (c) Helge Deller <deller@gmx.de>
  14  *      Copyright 2001 (c) Matthieu Delahaye <delahaym@esiee.fr>
  15  *
  16  * TODO:
  17  * - use generic DMA interface and ioremap()/iounmap()
  18  * - capture is still untested (and probaby non-working)
  19  * - spin locks
  20  * - implement non-consistent DMA pages
  21  * - implement gain meter
  22  * - module parameters
  23  * - correct cleaning sequence
  24  * - better error checking
  25  * - try to have a better quality.
  26  *
  27  */
  28
  29 /*
  30  * Harmony chipset 'modus operandi'.
  31  * - This chipset is found in some HP 32bit workstations, like 712, or B132 class.
  32  * most of controls are done through registers. Register are found at a fixed offset
  33  * from the hard physical adress, given in struct dev by register_parisc_driver.
  34  *
  35  * Playback and recording use 4kb pages (dma or not, depending on the machine).
  36  *
  37  * Most of PCM playback & capture is done through interrupt. When harmony needs
  38  * a new buffer to put recorded data or read played PCM, it sends an interrupt.
  39  * Bits 2 and 10 of DSTATUS register are '1' when harmony needs respectively
  40  * a new page for recording and playing.
  41  * Interrupt are disabled/enabled by writing to bit 32 of DSTATUS.
  42  * Adresses of next page to be played is put in PNXTADD register, next page
  43  * to be recorded is put in RNXTADD. There is 2 read-only registers, PCURADD and
  44  * RCURADD that provides adress of current page.
  45  *
  46  * Harmony has no way to controll full duplex or half duplex mode. It means
  47  * that we always need to provide adresses of playback and capture data, even
  48  * when this is not needed. That's why we statically alloc one graveyard
  49  * buffer (to put recorded data in play-only mode) and a silence buffer.
  50  *
  51  * Bitrate, number of channels and data format are controlled with
  52  * the CNTL register.
  53  *
  54  * Mixer work is done through one register (GAINCTL). Only input gain,
  55  * output attenuation and general attenuation control is provided. There is
  56  * also controls for enabling/disabling internal speaker and line
  57  * input.
  58  *
  59  * Buffers used by this driver are all DMA consistent.
  60  */
  61
  62 #include <linux/delay.h>
  63 #include <sound/driver.h>
  64 #include <linux/init.h>
  65 #include <linux/interrupt.h>
  66 #include <linux/slab.h>
  67 #include <linux/time.h>
  68 #include <linux/wait.h>
  69 #include <linux/moduleparam.h>
  70 #include <sound/core.h>
  71 #include <sound/control.h>
  72 #include <sound/pcm.h>
  73 #include <sound/rawmidi.h>
  74 #include <sound/initval.h>
  75 #include <sound/info.h>
  76 #include <asm/hardware.h>
  77 #include <asm/io.h>
  78 #include <asm/parisc-device.h>
  79
  80 MODULE_AUTHOR("Laurent Canet <canetl@esiee.fr>");
  81 MODULE_DESCRIPTION("ALSA Harmony sound driver");
  82 MODULE_LICENSE("GPL");
  83 MODULE_CLASSES("{sound}");
  84 MODULE_DEVICES("{{ALSA,Harmony soundcard}}");
  85
  86 #undef DEBUG
  87 #ifdef DEBUG
  88 # define DPRINTK printk
  89 #else
  90 # define DPRINTK(x,...)
  91 #endif
  92
  93 #define PFX     "harmony: "
  94
  95 #define MAX_PCM_DEVICES         1
  96 #define MAX_PCM_SUBSTREAMS      4
  97 #define MAX_MIDI_DEVICES        0
  98
  99 #define HARMONY_BUF_SIZE        4096
 100 #define MAX_BUFS                10
 101 #define MAX_BUFFER_SIZE         (MAX_BUFS * HARMONY_BUF_SIZE)
 102
 103 /* number of silence & graveyard buffers */
 104 #define GRAVEYARD_BUFS          3
 105 #define SILENCE_BUFS            3
 106
 107 #define HARMONY_CNTL_C          0x80000000
 108
 109 #define HARMONY_DSTATUS_PN      0x00000200
 110 #define HARMONY_DSTATUS_RN      0x00000002
 111 #define HARMONY_DSTATUS_IE      0x80000000
 112
 113 #define HARMONY_DF_16BIT_LINEAR 0x00000000
 114 #define HARMONY_DF_8BIT_ULAW    0x00000001
 115 #define HARMONY_DF_8BIT_ALAW    0x00000002
 116
 117 #define HARMONY_SS_MONO         0x00000000
 118 #define HARMONY_SS_STEREO       0x00000001
 119
 120 /*
 121  * Channels Mask in mixer register
 122  * try some "reasonable" default gain values
 123  */
 124
 125 #define HARMONY_GAIN_TOTAL_SILENCE 0x00F00FFF
 126
 127 /* the following should be enough (mixer is
 128  * very sensible on harmony)
 129  */
 130 #define HARMONY_GAIN_DEFAULT       0x0F2FF082
 131
 132
 133 /* useless since only one card is supported ATM */
 134 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 135 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 136 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;
 137 static int boot_devs;
 138
 139 module_param_array(index, int, boot_devs, 0444);
 140 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
 141 MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC);
 142 module_param_array(id, charp, boot_devs, 0444);
 143 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
 144 MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC);
 145 module_param_array(enable, bool, boot_devs, 0444);
 146 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
 147 MODULE_PARM_SYNTAX(enable, SNDRV_ENABLE_DESC);
 148
 149 /* Register offset (from base hpa) */
 150 #define REG_ID          0x00
 151 #define REG_RESET       0x04
 152 #define REG_CNTL        0x08
 153 #define REG_GAINCTL     0x0C
 154 #define REG_PNXTADD     0x10
 155 #define REG_PCURADD     0x14
 156 #define REG_RNXTADD     0x18
 157 #define REG_RCURADD     0x1C
 158 #define REG_DSTATUS     0x20
 159 #define REG_OV          0x24
 160 #define REG_PIO         0x28
 161 #define REG_DIAG        0x3C
 162
 163 /*
 164  * main harmony structure
 165  */
 166
 167 typedef struct snd_card_harmony {
 168
 169         /* spinlocks (To be done) */
 170         spinlock_t mixer_lock;
 171         spinlock_t control_lock;
 172
 173         /* parameters */
 174         int irq;
 175         unsigned long hpa;
 176         int id;
 177         int rev;
 178
 179         u32 current_gain;
 180         int data_format;                /* HARMONY_DF_xx_BIT_xxx */
 181         int sample_rate;                /* HARMONY_SR_xx_KHZ */
 182         int stereo_select;      /* HARMONY_SS_MONO or HARMONY_SS_STEREO */
 183         int format_initialized;
 184
 185         unsigned long ply_buffer;
 186         int ply_buf;
 187         int ply_count;
 188         int ply_size;
 189         int ply_stopped;
 190         int ply_total;
 191
 192         unsigned long cap_buffer;
 193         int cap_buf;
 194         int cap_count;
 195         int cap_size;
 196         int cap_stopped;
 197         int cap_total;
 198
 199         struct parisc_device *pa_dev;
 200
 201         struct snd_dma_device dma_dev;
 202
 203         /* the graveyard buffer is used as recording buffer when playback,
 204          * because harmony always want a buffer to put recorded data */
 205         struct snd_dma_buffer graveyard_dma;
 206         int graveyard_count;
 207
 208         /* same thing for silence buffer */
 209         struct snd_dma_buffer silence_dma;
 210         int silence_count;
 211
 212         /* alsa stuff */
 213         snd_card_t *card;
 214         snd_pcm_t *pcm;
 215         snd_pcm_substream_t *playback_substream;
 216         snd_pcm_substream_t *capture_substream;
 217         snd_info_entry_t *proc_entry;
 218 } snd_card_harmony_t;
 219 #define chip_t snd_card_harmony_t
 220
 221 static snd_card_t *snd_harmony_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
 222
 223 /* wait to be out of control mode */
 224 static inline void snd_harmony_wait_cntl(snd_card_harmony_t *harmony)
 225 {
 226         int timeout = 5000;
 227
 228         while ( (gsc_readl(harmony->hpa+REG_CNTL) & HARMONY_CNTL_C) && --timeout)
 229         {
 230                 /* Wait */ ;
 231         }
 232         if (timeout == 0) DPRINTK(KERN_DEBUG PFX "Error: wait cntl timeouted\n");
 233 }
 234
 235
 236 /*
 237  * sample rate routines
 238  */
 239 static unsigned int snd_card_harmony_rates[] = {
 240         5125, 6615, 8000, 9600,
 241         11025, 16000, 18900, 22050,
 242         27428, 32000, 33075, 37800,
 243         44100, 48000
 244 };
 245
 246 #define RATES sizeof(snd_card_harmony_rates) / sizeof(snd_card_harmony_rates[0])
 247
 248 static snd_pcm_hw_constraint_list_t hw_constraint_rates = {
 249         .count = RATES,
 250         .list = snd_card_harmony_rates,
 251         .mask = 0,
 252 };
 253
 254 #define HARMONY_SR_8KHZ         0x08
 255 #define HARMONY_SR_16KHZ        0x09
 256 #define HARMONY_SR_27KHZ        0x0A
 257 #define HARMONY_SR_32KHZ        0x0B
 258 #define HARMONY_SR_48KHZ        0x0E
 259 #define HARMONY_SR_9KHZ         0x0F
 260 #define HARMONY_SR_5KHZ         0x10
 261 #define HARMONY_SR_11KHZ        0x11
 262 #define HARMONY_SR_18KHZ        0x12
 263 #define HARMONY_SR_22KHZ        0x13
 264 #define HARMONY_SR_37KHZ        0x14
 265 #define HARMONY_SR_44KHZ        0x15
 266 #define HARMONY_SR_33KHZ        0x16
 267 #define HARMONY_SR_6KHZ         0x17
 268
 269 /* bits corresponding to the entries of snd_card_harmony_rates */
 270 static unsigned int rate_bits[14] = {
 271         HARMONY_SR_5KHZ, HARMONY_SR_6KHZ, HARMONY_SR_8KHZ,
 272         HARMONY_SR_9KHZ, HARMONY_SR_11KHZ, HARMONY_SR_16KHZ,
 273         HARMONY_SR_18KHZ, HARMONY_SR_22KHZ, HARMONY_SR_27KHZ,
 274         HARMONY_SR_32KHZ, HARMONY_SR_33KHZ, HARMONY_SR_37KHZ,
 275         HARMONY_SR_44KHZ, HARMONY_SR_48KHZ
 276 };
 277
 278 /* snd_card_harmony_rate_bits
 279  * @rate:       index of current data rate in list
 280  * returns: harmony hex code for registers
 281  */
 282 static unsigned int snd_card_harmony_rate_bits(int rate)
 283 {
 284         unsigned int idx;
 285
 286         for (idx = 0; idx <= RATES; idx++)
 287                 if (snd_card_harmony_rates[idx] == rate)
 288                         return rate_bits[idx];
 289         return HARMONY_SR_44KHZ; /* fallback */
 290 }
 291
 292 /*
 293  * update controls (data format, sample rate, number of channels)
 294  * according to value supplied in data structure
 295  */
 296 void snd_harmony_update_control(snd_card_harmony_t *harmony)
 297 {
 298         u32 default_cntl;
 299
 300         /* Set CNTL */
 301         default_cntl = (HARMONY_CNTL_C |        /* The C bit */
 302                 (harmony->data_format << 6) |   /* Set the data format */
 303                 (harmony->stereo_select << 5) | /* Stereo select */
 304                 (harmony->sample_rate));                /* Set sample rate */
 305
 306         /* initialize CNTL */
 307         snd_harmony_wait_cntl(harmony);
 308
 309         gsc_writel(default_cntl, harmony->hpa+REG_CNTL);
 310
 311 }
 312
 313 /*
 314  * interruption controls routines
 315  */
 316
 317 static void snd_harmony_disable_interrupts(snd_card_harmony_t *chip)
 318 {
 319         snd_harmony_wait_cntl(chip);
 320         gsc_writel(0, chip->hpa+REG_DSTATUS);
 321 }
 322
 323 static void snd_harmony_enable_interrupts(snd_card_harmony_t *chip)
 324 {
 325         snd_harmony_wait_cntl(chip);
 326         gsc_writel(HARMONY_DSTATUS_IE, chip->hpa+REG_DSTATUS);
 327 }
 328
 329 /*
 330  * interruption routine:
 331  * The interrupt routine must provide adresse of next physical pages
 332  * used by harmony
 333  */
 334 static int snd_card_harmony_interrupt(int irq, void *dev, struct pt_regs *regs)
 335 {
 336         snd_card_harmony_t *harmony = (snd_card_harmony_t *)dev;
 337         u32 dstatus = 0;
 338         unsigned long hpa = harmony->hpa;
 339
 340         /* Turn off interrupts */
 341         snd_harmony_disable_interrupts(harmony);
 342
 343         /* wait for control to free */
 344         snd_harmony_wait_cntl(harmony);
 345
 346         /* Read dstatus and pcuradd (the current address) */
 347         dstatus = gsc_readl(hpa+REG_DSTATUS);
 348
 349         /* Check if this is a request to get the next play buffer */
 350         if (dstatus & HARMONY_DSTATUS_PN) {
 351                 if (harmony->playback_substream) {
 352                         harmony->ply_buf += harmony->ply_count;
 353                         harmony->ply_buf %= harmony->ply_size;
 354
 355                         gsc_writel(harmony->ply_buffer + harmony->ply_buf,
 356                                         hpa+REG_PNXTADD);
 357
 358                         snd_pcm_period_elapsed(harmony->playback_substream);
 359                         harmony->ply_total++;
 360                 } else {
 361                         gsc_writel(harmony->silence_dma.addr +
 362                                    (HARMONY_BUF_SIZE*harmony->silence_count),
 363                                    hpa+REG_PNXTADD);
 364                         harmony->silence_count++;
 365                         harmony->silence_count %= SILENCE_BUFS;
 366                 }
 367         }
 368
 369         /* Check if we're being asked to fill in a recording buffer */
 370         if (dstatus & HARMONY_DSTATUS_RN) {
 371                 if (harmony->capture_substream) {
 372                         harmony->cap_buf += harmony->cap_count;
 373                         harmony->cap_buf %= harmony->cap_size;
 374
 375                         gsc_writel(harmony->cap_buffer + harmony->cap_buf,
 376                                         hpa+REG_RNXTADD);
 377
 378                         snd_pcm_period_elapsed(harmony->capture_substream);
 379                         harmony->cap_total++;
 380                 } else {
 381                         /* graveyard buffer */
 382                         gsc_writel(harmony->graveyard_dma.addr +
 383                                    (HARMONY_BUF_SIZE*harmony->graveyard_count),
 384                                    hpa+REG_RNXTADD);
 385                         harmony->graveyard_count++;
 386                         harmony->graveyard_count %= GRAVEYARD_BUFS;
 387                 }
 388         }
 389         snd_harmony_enable_interrupts(harmony);
 390
 391         return IRQ_HANDLED;
 392 }
 393
 394 /*
 395  * proc entry
 396  * this proc file will give some debugging info
 397  */
 398
 399 static void snd_harmony_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
 400 {
 401         snd_card_harmony_t *harmony = (snd_card_harmony_t *)entry->private_data;
 402
 403         snd_iprintf(buffer, "LASI Harmony driver\nLaurent Canet <canetl@esiee.fr>\n\n");
 404         snd_iprintf(buffer, "IRQ %d, hpa %lx, id %d rev %d\n",
 405                         harmony->irq, harmony->hpa,
 406                         harmony->id, harmony->rev);
 407         snd_iprintf(buffer, "Current gain %lx\n", (unsigned long) harmony->current_gain);
 408         snd_iprintf(buffer, "\tsample rate=%d\n", harmony->sample_rate);
 409         snd_iprintf(buffer, "\tstereo select=%d\n", harmony->stereo_select);
 410         snd_iprintf(buffer, "\tbitperchan=%d\n\n", harmony->data_format);
 411
 412         snd_iprintf(buffer, "Play status:\n");
 413         snd_iprintf(buffer, "\tstopped %d\n", harmony->ply_stopped);
 414         snd_iprintf(buffer, "\tbuffer %lx, count %d\n", harmony->ply_buffer, harmony->ply_count);
 415         snd_iprintf(buffer, "\tbuf %d size %d\n\n", harmony->ply_buf, harmony->ply_size);
 416
 417         snd_iprintf(buffer, "Capture status:\n");
 418         snd_iprintf(buffer, "\tstopped %d\n", harmony->cap_stopped);
 419         snd_iprintf(buffer, "\tbuffer %lx, count %d\n", harmony->cap_buffer, harmony->cap_count);
 420         snd_iprintf(buffer, "\tbuf %d, size %d\n\n", harmony->cap_buf, harmony->cap_size);
 421
 422         snd_iprintf(buffer, "Funny stats: total played=%d, recorded=%d\n\n", harmony->ply_total, harmony->cap_total);
 423
 424         snd_iprintf(buffer, "Register:\n");
 425         snd_iprintf(buffer, "\tgainctl: %lx\n", (unsigned long) gsc_readl(harmony->hpa+REG_GAINCTL));
 426         snd_iprintf(buffer, "\tcntl: %lx\n", (unsigned long) gsc_readl(harmony->hpa+REG_CNTL));
 427         snd_iprintf(buffer, "\tid: %lx\n", (unsigned long) gsc_readl(harmony->hpa+REG_ID));
 428         snd_iprintf(buffer, "\tpcuradd: %lx\n", (unsigned long) gsc_readl(harmony->hpa+REG_PCURADD));
 429         snd_iprintf(buffer, "\trcuradd: %lx\n", (unsigned long) gsc_readl(harmony->hpa+REG_RCURADD));
 430         snd_iprintf(buffer, "\tpnxtadd: %lx\n", (unsigned long) gsc_readl(harmony->hpa+REG_PNXTADD));
 431         snd_iprintf(buffer, "\trnxtadd: %lx\n", (unsigned long) gsc_readl(harmony->hpa+REG_RNXTADD));
 432         snd_iprintf(buffer, "\tdstatus: %lx\n", (unsigned long) gsc_readl(harmony->hpa+REG_DSTATUS));
 433         snd_iprintf(buffer, "\tov: %lx\n\n", (unsigned long) gsc_readl(harmony->hpa+REG_OV));
 434
 435 }
 436
 437 static void __devinit snd_harmony_proc_init(snd_card_harmony_t *harmony)
 438 {
 439         snd_info_entry_t *entry;
 440
 441         if (! snd_card_proc_new(harmony->card, "harmony", &entry))
 442                 snd_info_set_text_ops(entry, harmony, 2048, snd_harmony_proc_read);
 443 }
 444
 445 /*
 446  * PCM Stuff
 447  */
 448
 449 static int snd_card_harmony_playback_ioctl(snd_pcm_substream_t * substream,
 450                                          unsigned int cmd,
 451                                          void *arg)
 452 {
 453         return snd_pcm_lib_ioctl(substream, cmd, arg);
 454 }
 455
 456 static int snd_card_harmony_capture_ioctl(snd_pcm_substream_t * substream,
 457                                         unsigned int cmd,
 458                                         void *arg)
 459 {
 460         return snd_pcm_lib_ioctl(substream, cmd, arg);
 461 }
 462
 463 static int snd_card_harmony_playback_trigger(snd_pcm_substream_t * substream,
 464                                            int cmd)
 465 {
 466         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 467
 468         switch (cmd) {
 469                 case SNDRV_PCM_TRIGGER_STOP:
 470                         if (harmony->ply_stopped)
 471                                 return -EBUSY;
 472                         harmony->ply_stopped = 1;
 473                         snd_harmony_disable_interrupts(harmony);
 474                         break;
 475                 case SNDRV_PCM_TRIGGER_START:
 476                         if (!harmony->ply_stopped)
 477                                 return -EBUSY;
 478                         harmony->ply_stopped = 0;
 479                         /* write the location of the first buffer to play */
 480                         gsc_writel(harmony->ply_buffer, harmony->hpa+REG_PNXTADD);
 481                         snd_harmony_enable_interrupts(harmony);
 482                         break;
 483                 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 484                 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 485                 case SNDRV_PCM_TRIGGER_SUSPEND:
 486                         DPRINTK(KERN_INFO PFX "received unimplemented trigger: %d\n", cmd);
 487                 default:
 488                         return -EINVAL;
 489         }
 490         return 0;
 491 }
 492
 493 static int snd_card_harmony_capture_trigger(snd_pcm_substream_t * substream,
 494                                           int cmd)
 495 {
 496         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 497
 498         switch (cmd) {
 499                 case SNDRV_PCM_TRIGGER_STOP:
 500                         if (harmony->cap_stopped)
 501                                 return -EBUSY;
 502                         harmony->cap_stopped = 1;
 503                         snd_harmony_disable_interrupts(harmony);
 504                         break;
 505                 case SNDRV_PCM_TRIGGER_START:
 506                         if (!harmony->cap_stopped)
 507                                 return -EBUSY;
 508                         harmony->cap_stopped = 0;
 509                         snd_harmony_enable_interrupts(harmony);
 510                         break;
 511                 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 512                 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 513                 case SNDRV_PCM_TRIGGER_SUSPEND:
 514                         DPRINTK(KERN_INFO PFX "Received unimplemented trigger: %d\n", cmd);
 515                 default:
 516                         return -EINVAL;
 517         }
 518         return 0;
 519 }
 520
 521 /* set data format */
 522 static int snd_harmony_set_data_format(snd_card_harmony_t *harmony, int pcm_format)
 523 {
 524         int old_format = harmony->data_format;
 525         int new_format = old_format;
 526         switch (pcm_format) {
 527         case SNDRV_PCM_FORMAT_S16_BE:
 528                 new_format = HARMONY_DF_16BIT_LINEAR;
 529                 break;
 530         case SNDRV_PCM_FORMAT_A_LAW:
 531                 new_format = HARMONY_DF_8BIT_ALAW;
 532                 break;
 533         case SNDRV_PCM_FORMAT_MU_LAW:
 534                 new_format = HARMONY_DF_8BIT_ULAW;
 535                 break;
 536         }
 537         /* re-initialize silence buffer if needed */
 538         if (old_format != new_format)
 539                 snd_pcm_format_set_silence(pcm_format, harmony->silence_dma.area,
 540                                            (HARMONY_BUF_SIZE * SILENCE_BUFS * 8) / snd_pcm_format_width(pcm_format));
 541
 542         return new_format;
 543 }
 544
 545 static int snd_card_harmony_playback_prepare(snd_pcm_substream_t * substream)
 546 {
 547         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 548         snd_pcm_runtime_t *runtime = substream->runtime;
 549
 550         harmony->ply_size                       = snd_pcm_lib_buffer_bytes(substream);
 551         harmony->ply_count                      = snd_pcm_lib_period_bytes(substream);
 552         harmony->ply_buf                        = 0;
 553         harmony->ply_stopped            = 1;
 554
 555         /* initialize given sample rate */
 556         harmony->sample_rate = snd_card_harmony_rate_bits(runtime->rate);
 557
 558         /* data format */
 559         harmony->data_format = snd_harmony_set_data_format(haromny, runtime->format);
 560
 561         /* number of channels */
 562         if (runtime->channels == 2)
 563                 harmony->stereo_select = HARMONY_SS_STEREO;
 564         else
 565                 harmony->stereo_select = HARMONY_SS_MONO;
 566
 567         DPRINTK(KERN_INFO PFX "Playback_prepare, sr=%d(%x), df=%x, ss=%x hpa=%lx\n", runtime->rate,
 568                                 harmony->sample_rate, harmony->data_format, harmony->stereo_select, harmony->hpa);
 569         snd_harmony_update_control(harmony);
 570         harmony->format_initialized = 1;
 571         harmony->ply_buffer = runtime->dma_addr;
 572
 573         return 0;
 574 }
 575
 576 static int snd_card_harmony_capture_prepare(snd_pcm_substream_t * substream)
 577 {
 578         snd_pcm_runtime_t *runtime = substream->runtime;
 579         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 580
 581         harmony->cap_size                       = snd_pcm_lib_buffer_bytes(substream);
 582         harmony->cap_count                      = snd_pcm_lib_period_bytes(substream);
 583         harmony->cap_count                      = 0;
 584         harmony->cap_stopped            = 1;
 585
 586         /* initialize given sample rate */
 587         harmony->sample_rate = snd_card_harmony_rate_bits(runtime->rate);
 588
 589         /* data format */
 590         harmony->data_format = snd_harmony_set_data_format(haromny, runtime->format);
 591
 592         /* number of channels */
 593         if (runtime->channels == 1)
 594                 harmony->stereo_select = HARMONY_SS_MONO;
 595         else if (runtime->channels == 2)
 596                 harmony->stereo_select = HARMONY_SS_STEREO;
 597
 598         snd_harmony_update_control(harmony);
 599         harmony->format_initialized = 1;
 600
 601         harmony->cap_buffer = runtime->dma_addr;
 602
 603         return 0;
 604 }
 605
 606 static snd_pcm_uframes_t snd_card_harmony_capture_pointer(snd_pcm_substream_t * substream)
 607 {
 608         snd_pcm_runtime_t *runtime = substream->runtime;
 609         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 610         unsigned long rcuradd;
 611         int recorded;
 612
 613         if (harmony->cap_stopped) return 0;
 614         if (harmony->capture_substream == NULL) return 0;
 615
 616         rcuradd = gsc_readl(harmony->hpa+REG_RCURADD);
 617         recorded = (rcuradd - harmony->cap_buffer);
 618         recorded %= harmony->cap_size;
 619
 620         return bytes_to_frames(runtime, recorded);
 621 }
 622
 623 /*
 624  */
 625
 626 static snd_pcm_uframes_t snd_card_harmony_playback_pointer(snd_pcm_substream_t * substream)
 627 {
 628         snd_pcm_runtime_t *runtime = substream->runtime;
 629         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 630         int played;
 631         long int pcuradd = gsc_readl(harmony->hpa+REG_PCURADD);
 632
 633         if ((harmony->ply_stopped) || (harmony->playback_substream == NULL)) return 0;
 634         if ((harmony->ply_buffer == 0) || (harmony->ply_size == 0)) return 0;
 635
 636         played = (pcuradd - harmony->ply_buffer);
 637
 638         printk(KERN_DEBUG PFX "Pointer is %lx-%lx = %d\n", pcuradd, harmony->ply_buffer, played);
 639
 640         if (pcuradd > harmony->ply_buffer + harmony->ply_size) return 0;
 641
 642         return bytes_to_frames(runtime, played);
 643 }
 644
 645 static snd_pcm_hardware_t snd_card_harmony_playback =
 646 {
 647         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 648                                         SNDRV_PCM_INFO_JOINT_DUPLEX |
 649                                         SNDRV_PCM_INFO_MMAP_VALID |
 650                                         SNDRV_PCM_INFO_BLOCK_TRANSFER),
 651         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_BE |
 652                                         SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_MU_LAW),
 653         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 654         .rate_min =             5500,
 655         .rate_max =             48000,
 656         .channels_min =         1,
 657         .channels_max =         2,
 658         .buffer_bytes_max =     MAX_BUFFER_SIZE,
 659         .period_bytes_min =     HARMONY_BUF_SIZE,
 660         .period_bytes_max =     HARMONY_BUF_SIZE,
 661         .periods_min =          1,
 662         .periods_max =          MAX_BUFS,
 663         .fifo_size =            0,
 664 };
 665
 666 static snd_pcm_hardware_t snd_card_harmony_capture =
 667 {
 668         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 669                                         SNDRV_PCM_INFO_JOINT_DUPLEX |
 670                                         SNDRV_PCM_INFO_MMAP_VALID |
 671                                         SNDRV_PCM_INFO_BLOCK_TRANSFER),
 672         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_BE |
 673                                         SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_MU_LAW),
 674         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
 675         .rate_min =             5500,
 676         .rate_max =             48000,
 677         .channels_min =         1,
 678         .channels_max =         2,
 679         .buffer_bytes_max =     MAX_BUFFER_SIZE,
 680         .period_bytes_min =     HARMONY_BUF_SIZE,
 681         .period_bytes_max =     HARMONY_BUF_SIZE,
 682         .periods_min =          1,
 683         .periods_max =          MAX_BUFS,
 684         .fifo_size =            0,
 685 };
 686
 687 static int snd_card_harmony_playback_open(snd_pcm_substream_t * substream)
 688 {
 689         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 690         snd_pcm_runtime_t *runtime = substream->runtime;
 691         int err;
 692
 693         harmony->playback_substream = substream;
 694         runtime->hw = snd_card_harmony_playback;
 695         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
 696
 697         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 698                 return err;
 699
 700         return 0;
 701 }
 702
 703 static int snd_card_harmony_capture_open(snd_pcm_substream_t * substream)
 704 {
 705         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 706         snd_pcm_runtime_t *runtime = substream->runtime;
 707         int err;
 708
 709         harmony->capture_substream = substream;
 710         runtime->hw = snd_card_harmony_capture;
 711         snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraint_rates);
 712         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 713                 return err;
 714         return 0;
 715
 716 }
 717
 718 static int snd_card_harmony_playback_close(snd_pcm_substream_t * substream)
 719 {
 720         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 721
 722         harmony->playback_substream = NULL;
 723         harmony->ply_size                       = 0;
 724         harmony->ply_buf                        = 0;
 725         harmony->ply_buffer                     = 0;
 726         harmony->ply_count                      = 0;
 727         harmony->ply_stopped            = 1;
 728         harmony->format_initialized = 0;
 729
 730         return 0;
 731 }
 732
 733 static int snd_card_harmony_capture_close(snd_pcm_substream_t * substream)
 734 {
 735         snd_card_harmony_t *harmony = snd_pcm_substream_chip(substream);
 736
 737         harmony->capture_substream = NULL;
 738         harmony->cap_size                       = 0;
 739         harmony->cap_buf                        = 0;
 740         harmony->cap_buffer                     = 0;
 741         harmony->cap_count                      = 0;
 742         harmony->cap_stopped            = 1;
 743         harmony->format_initialized = 0;
 744
 745         return 0;
 746 }
 747
 748 static int snd_card_harmony_hw_params(snd_pcm_substream_t *substream,
 749                            snd_pcm_hw_params_t * hw_params)
 750 {
 751         int err;
 752
 753         err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 754         DPRINTK(KERN_INFO PFX "HW Params returned %d, dma_addr %lx\n", err,
 755                         (unsigned long)substream->runtime->dma_addr);
 756         return err;
 757 }
 758
 759 static int snd_card_harmony_hw_free(snd_pcm_substream_t *substream)
 760 {
 761         snd_pcm_lib_free_pages(substream);
 762         return 0;
 763 }
 764
 765 static snd_pcm_ops_t snd_card_harmony_playback_ops = {
 766         .open =                 snd_card_harmony_playback_open,
 767         .close =                snd_card_harmony_playback_close,
 768         .ioctl =                snd_card_harmony_playback_ioctl,
 769         .hw_params =    snd_card_harmony_hw_params,
 770         .hw_free =              snd_card_harmony_hw_free,
 771         .prepare =              snd_card_harmony_playback_prepare,
 772         .trigger =              snd_card_harmony_playback_trigger,
 773         .pointer =              snd_card_harmony_playback_pointer,
 774 };
 775
 776 static snd_pcm_ops_t snd_card_harmony_capture_ops = {
 777         .open =                 snd_card_harmony_capture_open,
 778         .close =                snd_card_harmony_capture_close,
 779         .ioctl =                snd_card_harmony_capture_ioctl,
 780         .hw_params =    snd_card_harmony_hw_params,
 781         .hw_free =              snd_card_harmony_hw_free,
 782         .prepare =              snd_card_harmony_capture_prepare,
 783         .trigger =              snd_card_harmony_capture_trigger,
 784         .pointer =              snd_card_harmony_capture_pointer,
 785 };
 786
 787 static int snd_card_harmony_pcm_init(snd_card_harmony_t *harmony, int device)
 788 {
 789         snd_pcm_t *pcm;
 790         int err;
 791
 792         /* Request that IRQ */
 793         if (request_irq(harmony->irq, snd_card_harmony_interrupt, 0 ,"harmony", harmony)) {
 794                 printk(KERN_ERR PFX "Error requesting irq %d.\n", harmony->irq);
 795                 return -EFAULT;
 796         }
 797
 798         snd_harmony_disable_interrupts(harmony);
 799
 800         if ((err = snd_pcm_new(harmony->card, "Harmony", device, 1, 1, &pcm)) < 0)
 801                 return err;
 802
 803         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_harmony_playback_ops);
 804         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_harmony_capture_ops);
 805
 806         pcm->private_data = harmony;
 807         pcm->info_flags = 0;
 808         strcpy(pcm->name, "Harmony");
 809         harmony->pcm = pcm;
 810
 811         /* initialize graveyard buffer */
 812         harmony->dma_dev.type = SNDRV_DMA_TYPE_DEV;
 813         harmony->dma_dev.dev = &harmony->pa_dev->dev;
 814         err = snd_dma_alloc_pages(&harmony->dma_dev, HARMONY_BUF_SIZE*GRAVEYARD_BUFS,
 815                                   &harmony->graveyard_dma);
 816         if (err < 0)
 817                 return err;
 818         harmony->graveyard_count = 0;
 819
 820         /* initialize silence buffers */
 821         err = snd_dma_alloc_pages(&harmony->dma_dev, HARMONY_BUF_SIZE*SILENCE_BUFS,
 822                                   &harmony->silence_dma);
 823         if (err < 0)
 824                 return err;
 825         harmony->silence_count = 0;
 826
 827         harmony->ply_stopped = harmony->cap_stopped = 1;
 828
 829         harmony->playback_substream = NULL;
 830         harmony->capture_substream = NULL;
 831         harmony->graveyard_count = 0;
 832
 833         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 834                                               &harmony->pa_dev->dev,
 835                                               MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
 836
 837         return 0;
 838 }
 839
 840 /*
 841  * mixer routines
 842  */
 843
 844 static void snd_harmony_set_new_gain(snd_card_harmony_t *harmony)
 845 {
 846         DPRINTK(KERN_INFO PFX "Setting new gain %x at %lx\n", harmony->current_gain, harmony->hpa+REG_GAINCTL);
 847         /* Wait until we're out of control mode */
 848         snd_harmony_wait_cntl(harmony);
 849
 850         gsc_writel(harmony->current_gain, harmony->hpa+REG_GAINCTL);
 851 }
 852
 853 #define HARMONY_VOLUME(xname, left_shift, right_shift, mask, invert) \
 854 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 855   .info = snd_harmony_mixercontrol_info, \
 856   .get = snd_harmony_volume_get, .put = snd_harmony_volume_put, \
 857   .private_value = ((left_shift) | ((right_shift) << 8) | ((mask) << 16) | ((invert) << 24)) }
 858
 859 static int snd_harmony_mixercontrol_info(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
 860 {
 861         int mask = (kcontrol->private_value >> 16) & 0xff;
 862         int left_shift = (kcontrol->private_value) & 0xff;
 863         int right_shift = (kcontrol->private_value >> 8) & 0xff;
 864
 865         uinfo->type = (mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER);
 866         uinfo->count = (left_shift == right_shift) ? 1 : 2;
 867         uinfo->value.integer.min = 0;
 868         uinfo->value.integer.max = mask;
 869         return 0;
 870 }
 871
 872 static int snd_harmony_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 873 {
 874         snd_card_harmony_t *harmony = _snd_kcontrol_chip(kcontrol);
 875         int shift_left = (kcontrol->private_value) & 0xff;
 876         int shift_right = (kcontrol->private_value >> 8) & 0xff;
 877         int mask = (kcontrol->private_value >> 16) & 0xff;
 878         int invert = (kcontrol->private_value >> 24) & 0xff;
 879         unsigned long flags;
 880         int left, right;
 881
 882         spin_lock_irqsave(&harmony->mixer_lock, flags);
 883         left = (harmony->current_gain >> shift_left) & mask;
 884         right = (harmony->current_gain >> shift_right) & mask;
 885
 886         if (invert) {
 887                 left = mask - left;
 888                 right = mask - right;
 889         }
 890         ucontrol->value.integer.value[0] = left;
 891         ucontrol->value.integer.value[1] = right;
 892         spin_unlock_irqrestore(&harmony->mixer_lock, flags);
 893
 894         return 0;
 895 }
 896
 897 static int snd_harmony_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
 898 {
 899         snd_card_harmony_t *harmony = _snd_kcontrol_chip(kcontrol);
 900         int shift_left = (kcontrol->private_value) & 0xff;
 901         int shift_right = (kcontrol->private_value >> 8) & 0xff;
 902         int mask = (kcontrol->private_value >> 16) & 0xff;
 903         int invert = (kcontrol->private_value >> 24) & 0xff;
 904         unsigned long flags;
 905         int left, right;
 906         int old_gain = harmony->current_gain;
 907
 908         left = ucontrol->value.integer.value[0] & mask;
 909         right = ucontrol->value.integer.value[1] & mask;
 910         if (invert) {
 911                 left = mask - left;
 912                 right = mask - right;
 913         }
 914
 915         spin_lock_irqsave(&harmony->mixer_lock, flags);
 916         harmony->current_gain = harmony->current_gain & ~( (mask << shift_right) | (mask << shift_left));
 917         harmony->current_gain = harmony->current_gain | ((left << shift_left) | (right << shift_right) );
 918         snd_harmony_set_new_gain(harmony);
 919         spin_unlock_irqrestore(&harmony->mixer_lock, flags);
 920
 921         return (old_gain - harmony->current_gain);
 922 }
 923
 924 #define HARMONY_CONTROLS (sizeof(snd_harmony_controls)/sizeof(snd_kcontrol_new_t))
 925
 926 static snd_kcontrol_new_t snd_harmony_controls[] = {
 927 HARMONY_VOLUME("PCM Capture Volume", 12, 16, 0x0f, 0),
 928 HARMONY_VOLUME("Master Volume", 20, 20, 0x0f, 1),
 929 HARMONY_VOLUME("PCM Playback Volume", 6, 0, 0x3f, 1),
 930 };
 931
 932 static void __init snd_harmony_reset_codec(snd_card_harmony_t *harmony)
 933 {
 934         snd_harmony_wait_cntl(harmony);
 935         gsc_writel(1, harmony->hpa+REG_RESET);
 936         mdelay(50);             /* wait 50 ms */
 937         gsc_writel(0, harmony->hpa+REG_RESET);
 938 }
 939
 940 /*
 941  * Mute all the output and reset Harmony.
 942  */
 943
 944 static void __init snd_harmony_mixer_reset(snd_card_harmony_t *harmony)
 945 {
 946         harmony->current_gain = HARMONY_GAIN_TOTAL_SILENCE;
 947         snd_harmony_set_new_gain(harmony);
 948         snd_harmony_reset_codec(harmony);
 949         harmony->current_gain = HARMONY_GAIN_DEFAULT;
 950         snd_harmony_set_new_gain(harmony);
 951 }
 952
 953
 954 static int __init snd_card_harmony_mixer_init(snd_card_harmony_t *harmony)
 955 {
 956         snd_card_t *card = harmony->card;
 957         int idx, err;
 958
 959         snd_assert(harmony != NULL, return -EINVAL);
 960         strcpy(card->mixername, "Harmony Gain control interface");
 961
 962         for (idx = 0; idx < HARMONY_CONTROLS; idx++) {
 963                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_harmony_controls[idx], harmony))) < 0)
 964                         return err;
 965         }
 966
 967         snd_harmony_mixer_reset(harmony);
 968
 969         return 0;
 970 }
 971
 972 static int snd_card_harmony_create(snd_card_t *card, struct parisc_device *pa_dev, snd_card_harmony_t *harmony)
 973 {
 974         u32     cntl;
 975
 976         harmony->card = card;
 977
 978         harmony->pa_dev = pa_dev;
 979
 980         /* Set the HPA of harmony */
 981         harmony->hpa = pa_dev->hpa;
 982
 983         harmony->irq = pa_dev->irq;
 984         if (!harmony->irq) {
 985                 printk(KERN_ERR PFX "no irq found\n");
 986                 return -ENODEV;
 987         }
 988
 989         /* Grab the ID and revision from the device */
 990         harmony->id = (gsc_readl(harmony->hpa+REG_ID)&0x00ff0000) >> 16;
 991         if ((harmony->id | 1) != 0x15) {
 992                 printk(KERN_WARNING PFX "wrong harmony id 0x%02x\n", harmony->id);
 993                 return -EBUSY;
 994         }
 995         cntl = gsc_readl(harmony->hpa+REG_CNTL);
 996         harmony->rev = (cntl>>20) & 0xff;
 997
 998         printk(KERN_INFO "Lasi Harmony Audio driver h/w id %i, rev. %i at 0x%lx, IRQ %i\n",     harmony->id, harmony->rev, pa_dev->hpa, harmony->irq);
 999
1000         /* Make sure the control bit isn't set, although I don't think it
1001            ever is. */
1002         if (cntl & HARMONY_CNTL_C) {
1003                 printk(KERN_WARNING PFX "CNTL busy\n");
1004                 harmony->hpa = 0;
1005                 return -EBUSY;
1006         }
1007
1008         return 0;
1009 }
1010
1011 static int __init snd_card_harmony_probe(struct parisc_device *pa_dev)
1012 {
1013         static int dev;
1014         snd_card_harmony_t *chip;
1015         snd_card_t *card;
1016         int err;
1017
1018         if (dev >= SNDRV_CARDS)
1019                 return -ENODEV;
1020         if (!enable[dev]) {
1021                 dev++;
1022                 return -ENOENT;
1023         }
1024
1025         snd_harmony_cards[dev] = snd_card_new(index[dev], id[dev], THIS_MODULE,
1026                             sizeof(snd_card_harmony_t));
1027         card = snd_harmony_cards[dev];
1028
1029         if (card == NULL)
1030                 return -ENOMEM;
1031         chip = (struct snd_card_harmony *)card->private_data;
1032         spin_lock_init(&chip->control_lock);
1033         spin_lock_init(&chip->mixer_lock);
1034
1035         if ((err = snd_card_harmony_create(card, pa_dev, chip)) < 0) {
1036                 printk(KERN_ERR PFX "Creation failed\n");
1037                 snd_card_free(card);
1038                 return err;
1039         }
1040         if ((err = snd_card_harmony_pcm_init(chip, dev)) < 0) {
1041                 printk(KERN_ERR PFX "PCM Init failed\n");
1042                 snd_card_free(card);
1043                 return err;
1044         }
1045         if ((err = snd_card_harmony_mixer_init(chip)) < 0) {
1046                 printk(KERN_ERR PFX "Mixer init failed\n");
1047                 snd_card_free(card);
1048                 return err;
1049         }
1050
1051         snd_harmony_proc_init(chip);
1052
1053         strcpy(card->driver, "Harmony");
1054         strcpy(card->shortname, "ALSA driver for LASI Harmony");
1055         sprintf(card->longname, "%s at h/w, id %i, rev. %i hpa 0x%lx, IRQ %i\n",card->shortname, chip->id, chip->rev, pa_dev->hpa, chip->irq);
1056
1057         if ((err = snd_card_register(card)) < 0) {
1058                 snd_card_free(card);
1059                 return err;
1060         }
1061
1062         printk(KERN_DEBUG PFX "Successfully registered harmony pcm backend & mixer %d\n", dev);
1063         dev++;
1064         return 0;
1065 }
1066
1067 static struct parisc_device_id snd_card_harmony_devicetbl[] = {
1068  { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007A }, /* Bushmaster/Flounder */
1069  { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007B }, /* 712/715 Audio */
1070  { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007E }, /* Pace Audio */
1071  { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007F }, /* Outfield / Coral II */
1072  { 0, }
1073 };
1074
1075 MODULE_DEVICE_TABLE(parisc, snd_card_harmony_devicetbl);
1076
1077 /*
1078  * bloc device parisc. c'est une structure qui definit un device
1079  * que l'on trouve sur parisc.
1080  * On y trouve les differents numeros HVERSION correspondant au device
1081  * en question (ce qui permet a l'inventory de l'identifier) et la fonction
1082  * d'initialisation du chose
1083  */
1084
1085 static struct parisc_driver snd_card_harmony_driver = {
1086         .name           = "Lasi ALSA Harmony",
1087         .id_table       = snd_card_harmony_devicetbl,
1088         .probe          = snd_card_harmony_probe,
1089 };
1090
1091 static int __init alsa_card_harmony_init(void)
1092 {
1093         int err;
1094
1095         if ((err = register_parisc_driver(&snd_card_harmony_driver)) < 0) {
1096                 printk(KERN_ERR "Harmony soundcard not found or device busy\n");
1097                 return err;
1098         }
1099
1100         return 0;
1101 }
1102
1103 static void __exit alsa_card_harmony_exit(void)
1104 {
1105         int idx;
1106         snd_card_harmony_t *harmony;
1107
1108         for (idx = 0; idx < SNDRV_CARDS; idx++)
1109         {
1110                 if (snd_harmony_cards[idx] != NULL)
1111                 {
1112                         DPRINTK(KERN_INFO PFX "Freeing card %d\n", idx);
1113                         harmony = snd_harmony_cards[idx]->private_data;
1114                         free_irq(harmony->irq, snd_card_harmony_interrupt);
1115                         printk(KERN_INFO PFX "Card unloaded %d, irq=%d\n", idx, harmony->irq);
1116                         snd_card_free(snd_harmony_cards[idx]);
1117                 }
1118         }
1119 }
1120
1121 module_init(alsa_card_harmony_init)
1122 module_exit(alsa_card_harmony_exit)