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   1 /*
   2  *  linux/sound/oss/dmasound/dmasound_awacs.c
   3  *
   4  *  PowerMac `AWACS' and `Burgundy' DMA Sound Driver
   5  *  with some limited support for DACA & Tumbler
   6  *
   7  *  See linux/sound/oss/dmasound/dmasound_core.c for copyright and
   8  *  history prior to 2001/01/26.
   9  *
  10  *      26/01/2001 ed 0.1 Iain Sandoe
  11  *              - added version info.
  12  *              - moved dbdma command buffer allocation to PMacXXXSqSetup()
  13  *              - fixed up beep dbdma cmd buffers
  14  *
  15  *      08/02/2001 [0.2]
  16  *              - make SNDCTL_DSP_GETFMTS return the correct info for the h/w
  17  *              - move soft format translations to a separate file
  18  *              - [0.3] make SNDCTL_DSP_GETCAPS return correct info.
  19  *              - [0.4] more informative machine name strings.
  20  *              - [0.5]
  21  *              - record changes.
  22  *              - made the default_hard/soft entries.
  23  *      04/04/2001 [0.6]
  24  *              - minor correction to bit assignments in awacs_defs.h
  25  *              - incorporate mixer changes from 2.2.x back-port.
  26  *              - take out passthru as a rec input (it isn't).
  27  *              - make Input Gain slider work the 'right way up'.
  28  *              - try to make the mixer sliders more logical - so now the
  29  *                input selectors are just two-state (>50% == ON) and the
  30  *                Input Gain slider handles the rest of the gain issues.
  31  *              - try to pick slider representations that most closely match
  32  *                the actual use - e.g. IGain for input gain...
  33  *              - first stab at over/under-run detection.
  34  *              - minor cosmetic changes to IRQ identification.
  35  *              - fix bug where rates > max would be reported as supported.
  36  *              - first stab at over/under-run detection.
  37  *              - make use of i2c for mixer settings conditional on perch
  38  *                rather than cuda (some machines without perch have cuda).
  39  *              - fix bug where TX stops when dbdma status comes up "DEAD"
  40  *                so far only reported on PowerComputing clones ... but.
  41  *              - put in AWACS/Screamer register write timeouts.
  42  *              - part way to partitioning the init() stuff
  43  *              - first pass at 'tumbler' stuff (not support - just an attempt
  44  *                to allow the driver to load on new G4s).
  45  *      01/02/2002 [0.7] - BenH
  46  *              - all sort of minor bits went in since the latest update, I
  47  *                bumped the version number for that reason
  48  *
  49  *      07/26/2002 [0.8] - BenH
  50  *              - More minor bits since last changelog (I should be more careful
  51  *                with those)
  52  *              - Support for snapper & better tumbler integration by Toby Sargeant
  53  *              - Headphone detect for scremer by Julien Blache
  54  *              - More tumbler fixed by Andreas Schwab
  55  *      11/29/2003 [0.8.1] - Renzo Davoli (King Enzo)
  56  *              - Support for Snapper line in
  57  *              - snapper input resampling (for rates < 44100)
  58  *              - software line gain control
  59  */
  60
  61 /* GENERAL FIXME/TODO: check that the assumptions about what is written to
  62    mac-io is valid for DACA & Tumbler.
  63
  64    This driver is in bad need of a rewrite. The dbdma code has to be split,
  65    some proper device-tree parsing code has to be written, etc...
  66 */
  67
  68 #include <linux/types.h>
  69 #include <linux/module.h>
  70 #include <linux/slab.h>
  71 #include <linux/init.h>
  72 #include <linux/delay.h>
  73 #include <linux/soundcard.h>
  74 #include <linux/adb.h>
  75 #include <linux/nvram.h>
  76 #include <linux/tty.h>
  77 #include <linux/vt_kern.h>
  78 #include <linux/spinlock.h>
  79 #include <linux/kmod.h>
  80 #include <linux/interrupt.h>
  81 #include <linux/input.h>
  82 #include <linux/mutex.h>
  83 #ifdef CONFIG_ADB_CUDA
  84 #include <linux/cuda.h>
  85 #endif
  86 #ifdef CONFIG_ADB_PMU
  87 #include <linux/pmu.h>
  88 #endif
  89
  90 #include <asm/uaccess.h>
  91 #include <asm/prom.h>
  92 #include <asm/machdep.h>
  93 #include <asm/io.h>
  94 #include <asm/dbdma.h>
  95 #include <asm/pmac_feature.h>
  96 #include <asm/irq.h>
  97 #include <asm/nvram.h>
  98
  99 #include "awacs_defs.h"
 100 #include "dmasound.h"
 101 #include "tas3001c.h"
 102 #include "tas3004.h"
 103 #include "tas_common.h"
 104
 105 #define DMASOUND_AWACS_REVISION 0
 106 #define DMASOUND_AWACS_EDITION  7
 107
 108 #define AWACS_SNAPPER   110     /* fake revision # for snapper */
 109 #define AWACS_BURGUNDY  100     /* fake revision # for burgundy */
 110 #define AWACS_TUMBLER    90     /* fake revision # for tumbler */
 111 #define AWACS_DACA       80     /* fake revision # for daca (ibook) */
 112 #define AWACS_AWACS       2     /* holding revision for AWACS */
 113 #define AWACS_SCREAMER    3     /* holding revision for Screamer */
 114 /*
 115  * Interrupt numbers and addresses, & info obtained from the device tree.
 116  */
 117 static int awacs_irq, awacs_tx_irq, awacs_rx_irq;
 118 static volatile struct awacs_regs __iomem *awacs;
 119 static volatile u32 __iomem *i2s;
 120 static volatile struct dbdma_regs __iomem *awacs_txdma, *awacs_rxdma;
 121 static int awacs_rate_index;
 122 static int awacs_subframe;
 123 static struct device_node* awacs_node;
 124 static struct device_node* i2s_node;
 125 static struct resource awacs_rsrc[3];
 126
 127 static char awacs_name[64];
 128 static int awacs_revision;
 129 static int awacs_sleeping;
 130 static DEFINE_MUTEX(dmasound_mutex);
 131
 132 static int sound_device_id;             /* exists after iMac revA */
 133 static int hw_can_byteswap = 1 ;        /* most pmac sound h/w can */
 134
 135 /* model info */
 136 /* To be replaced with better interaction with pmac_feature.c */
 137 static int is_pbook_3X00;
 138 static int is_pbook_g3;
 139
 140 /* expansion info */
 141 static int has_perch;
 142 static int has_ziva;
 143
 144 /* for earlier powerbooks which need fiddling with mac-io to enable
 145  * cd etc.
 146 */
 147 static unsigned char __iomem *latch_base;
 148 static unsigned char __iomem *macio_base;
 149
 150 /*
 151  * Space for the DBDMA command blocks.
 152  */
 153 static void *awacs_tx_cmd_space;
 154 static volatile struct dbdma_cmd *awacs_tx_cmds;
 155 static int number_of_tx_cmd_buffers;
 156
 157 static void *awacs_rx_cmd_space;
 158 static volatile struct dbdma_cmd *awacs_rx_cmds;
 159 static int number_of_rx_cmd_buffers;
 160
 161 /*
 162  * Cached values of AWACS registers (we can't read them).
 163  * Except on the burgundy (and screamer). XXX
 164  */
 165
 166 int awacs_reg[8];
 167 int awacs_reg1_save;
 168
 169 /* tracking values for the mixer contents
 170 */
 171
 172 static int spk_vol;
 173 static int line_vol;
 174 static int passthru_vol;
 175
 176 static int ip_gain;           /* mic preamp settings */
 177 static int rec_lev = 0x4545 ; /* default CD gain 69 % */
 178 static int mic_lev;
 179 static int cd_lev = 0x6363 ; /* 99 % */
 180 static int line_lev;
 181
 182 static int hdp_connected;
 183
 184 /*
 185  * Stuff for outputting a beep.  The values range from -327 to +327
 186  * so we can multiply by an amplitude in the range 0..100 to get a
 187  * signed short value to put in the output buffer.
 188  */
 189 static short beep_wform[256] = {
 190         0,      40,     79,     117,    153,    187,    218,    245,
 191         269,    288,    304,    316,    323,    327,    327,    324,
 192         318,    310,    299,    288,    275,    262,    249,    236,
 193         224,    213,    204,    196,    190,    186,    183,    182,
 194         182,    183,    186,    189,    192,    196,    200,    203,
 195         206,    208,    209,    209,    209,    207,    204,    201,
 196         197,    193,    188,    183,    179,    174,    170,    166,
 197         163,    161,    160,    159,    159,    160,    161,    162,
 198         164,    166,    168,    169,    171,    171,    171,    170,
 199         169,    167,    163,    159,    155,    150,    144,    139,
 200         133,    128,    122,    117,    113,    110,    107,    105,
 201         103,    103,    103,    103,    104,    104,    105,    105,
 202         105,    103,    101,    97,     92,     86,     78,     68,
 203         58,     45,     32,     18,     3,      -11,    -26,    -41,
 204         -55,    -68,    -79,    -88,    -95,    -100,   -102,   -102,
 205         -99,    -93,    -85,    -75,    -62,    -48,    -33,    -16,
 206         0,      16,     33,     48,     62,     75,     85,     93,
 207         99,     102,    102,    100,    95,     88,     79,     68,
 208         55,     41,     26,     11,     -3,     -18,    -32,    -45,
 209         -58,    -68,    -78,    -86,    -92,    -97,    -101,   -103,
 210         -105,   -105,   -105,   -104,   -104,   -103,   -103,   -103,
 211         -103,   -105,   -107,   -110,   -113,   -117,   -122,   -128,
 212         -133,   -139,   -144,   -150,   -155,   -159,   -163,   -167,
 213         -169,   -170,   -171,   -171,   -171,   -169,   -168,   -166,
 214         -164,   -162,   -161,   -160,   -159,   -159,   -160,   -161,
 215         -163,   -166,   -170,   -174,   -179,   -183,   -188,   -193,
 216         -197,   -201,   -204,   -207,   -209,   -209,   -209,   -208,
 217         -206,   -203,   -200,   -196,   -192,   -189,   -186,   -183,
 218         -182,   -182,   -183,   -186,   -190,   -196,   -204,   -213,
 219         -224,   -236,   -249,   -262,   -275,   -288,   -299,   -310,
 220         -318,   -324,   -327,   -327,   -323,   -316,   -304,   -288,
 221         -269,   -245,   -218,   -187,   -153,   -117,   -79,    -40,
 222 };
 223
 224 /* beep support */
 225 #define BEEP_SRATE      22050   /* 22050 Hz sample rate */
 226 #define BEEP_BUFLEN     512
 227 #define BEEP_VOLUME     15      /* 0 - 100 */
 228
 229 static int beep_vol = BEEP_VOLUME;
 230 static int beep_playing;
 231 static int awacs_beep_state;
 232 static short *beep_buf;
 233 static void *beep_dbdma_cmd_space;
 234 static volatile struct dbdma_cmd *beep_dbdma_cmd;
 235
 236 /* Burgundy functions */
 237 static void awacs_burgundy_wcw(unsigned addr,unsigned newval);
 238 static unsigned awacs_burgundy_rcw(unsigned addr);
 239 static void awacs_burgundy_write_volume(unsigned address, int volume);
 240 static int awacs_burgundy_read_volume(unsigned address);
 241 static void awacs_burgundy_write_mvolume(unsigned address, int volume);
 242 static int awacs_burgundy_read_mvolume(unsigned address);
 243
 244 /* we will allocate a single 'emergency' dbdma cmd block to use if the
 245    tx status comes up "DEAD".  This happens on some PowerComputing Pmac
 246    clones, either owing to a bug in dbdma or some interaction between
 247    IDE and sound.  However, this measure would deal with DEAD status if
 248    if appeared elsewhere.
 249
 250    for the sake of memory efficiency we'll allocate this cmd as part of
 251    the beep cmd stuff.
 252 */
 253
 254 static volatile struct dbdma_cmd *emergency_dbdma_cmd;
 255
 256 #ifdef CONFIG_PM
 257 /*
 258  * Stuff for restoring after a sleep.
 259  */
 260 static void awacs_sleep_notify(struct pmu_sleep_notifier *self, int when);
 261 struct pmu_sleep_notifier awacs_sleep_notifier = {
 262         awacs_sleep_notify, SLEEP_LEVEL_SOUND,
 263 };
 264 #endif /* CONFIG_PM */
 265
 266 /* for (soft) sample rate translations */
 267 int expand_bal;         /* Balance factor for expanding (not volume!) */
 268 int expand_read_bal;    /* Balance factor for expanding reads (not volume!) */
 269
 270 /*** Low level stuff *********************************************************/
 271
 272 static void *PMacAlloc(unsigned int size, gfp_t flags);
 273 static void PMacFree(void *ptr, unsigned int size);
 274 static int PMacIrqInit(void);
 275 #ifdef MODULE
 276 static void PMacIrqCleanup(void);
 277 #endif
 278 static void PMacSilence(void);
 279 static void PMacInit(void);
 280 static int PMacSetFormat(int format);
 281 static int PMacSetVolume(int volume);
 282 static void PMacPlay(void);
 283 static void PMacRecord(void);
 284 static irqreturn_t pmac_awacs_tx_intr(int irq, void *devid);
 285 static irqreturn_t pmac_awacs_rx_intr(int irq, void *devid);
 286 static irqreturn_t pmac_awacs_intr(int irq, void *devid);
 287 static void awacs_write(int val);
 288 static int awacs_get_volume(int reg, int lshift);
 289 static int awacs_volume_setter(int volume, int n, int mute, int lshift);
 290
 291
 292 /*** Mid level stuff **********************************************************/
 293
 294 static int PMacMixerIoctl(u_int cmd, u_long arg);
 295 static int PMacWriteSqSetup(void);
 296 static int PMacReadSqSetup(void);
 297 static void PMacAbortRead(void);
 298
 299 extern TRANS transAwacsNormal ;
 300 extern TRANS transAwacsExpand ;
 301 extern TRANS transAwacsNormalRead ;
 302 extern TRANS transAwacsExpandRead ;
 303
 304 extern int daca_init(void);
 305 extern void daca_cleanup(void);
 306 extern int daca_set_volume(uint left_vol, uint right_vol);
 307 extern void daca_get_volume(uint * left_vol, uint  *right_vol);
 308 extern int daca_enter_sleep(void);
 309 extern int daca_leave_sleep(void);
 310
 311 #define TRY_LOCK()      \
 312         if ((rc = mutex_lock_interruptible(&dmasound_mutex)) != 0)      \
 313                 return rc;
 314 #define LOCK()          mutex_lock(&dmasound_mutex);
 315
 316 #define UNLOCK()        mutex_unlock(&dmasound_mutex);
 317
 318 /* We use different versions that the ones provided in dmasound.h
 319  *
 320  * FIXME: Use different names ;)
 321  */
 322 #undef IOCTL_IN
 323 #undef IOCTL_OUT
 324
 325 #define IOCTL_IN(arg, ret)      \
 326         rc = get_user(ret, (int __user *)(arg)); \
 327         if (rc) break;
 328 #define IOCTL_OUT(arg, ret)     \
 329         ioctl_return2((int __user *)(arg), ret)
 330
 331 static inline int ioctl_return2(int __user *addr, int value)
 332 {
 333         return value < 0 ? value : put_user(value, addr);
 334 }
 335
 336
 337 /*** AE - TUMBLER / SNAPPER START ************************************************/
 338
 339
 340 int gpio_audio_reset, gpio_audio_reset_pol;
 341 int gpio_amp_mute, gpio_amp_mute_pol;
 342 int gpio_headphone_mute, gpio_headphone_mute_pol;
 343 int gpio_headphone_detect, gpio_headphone_detect_pol;
 344 int gpio_headphone_irq;
 345
 346 int
 347 setup_audio_gpio(const char *name, const char* compatible, int *gpio_addr, int* gpio_pol)
 348 {
 349         struct device_node *np;
 350         const u32* pp;
 351
 352         np = find_devices("gpio");
 353         if (!np)
 354                 return -ENODEV;
 355
 356         np = np->child;
 357         while(np != 0) {
 358                 if (name) {
 359                         const char *property =
 360                                 get_property(np,"audio-gpio",NULL);
 361                         if (property != 0 && strcmp(property,name) == 0)
 362                                 break;
 363                 } else if (compatible && device_is_compatible(np, compatible))
 364                         break;
 365                 np = np->sibling;
 366         }
 367         if (!np)
 368                 return -ENODEV;
 369         pp = get_property(np, "AAPL,address", NULL);
 370         if (!pp)
 371                 return -ENODEV;
 372         *gpio_addr = (*pp) & 0x0000ffff;
 373         pp = get_property(np, "audio-gpio-active-state", NULL);
 374         if (pp)
 375                 *gpio_pol = *pp;
 376         else
 377                 *gpio_pol = 1;
 378         return irq_of_parse_and_map(np, 0);
 379 }
 380
 381 static inline void
 382 write_audio_gpio(int gpio_addr, int data)
 383 {
 384         if (!gpio_addr)
 385                 return;
 386         pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, gpio_addr, data ? 0x05 : 0x04);
 387 }
 388
 389 static inline int
 390 read_audio_gpio(int gpio_addr)
 391 {
 392         if (!gpio_addr)
 393                 return 0;
 394         return ((pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, gpio_addr, 0) & 0x02) !=0);
 395 }
 396
 397 /*
 398  * Headphone interrupt via GPIO (Tumbler, Snapper, DACA)
 399  */
 400 static irqreturn_t
 401 headphone_intr(int irq, void *devid)
 402 {
 403         unsigned long flags;
 404
 405         spin_lock_irqsave(&dmasound.lock, flags);
 406         if (read_audio_gpio(gpio_headphone_detect) == gpio_headphone_detect_pol) {
 407                 printk(KERN_INFO "Audio jack plugged, muting speakers.\n");
 408                 write_audio_gpio(gpio_headphone_mute, !gpio_headphone_mute_pol);
 409                 write_audio_gpio(gpio_amp_mute, gpio_amp_mute_pol);
 410                 tas_output_device_change(sound_device_id,TAS_OUTPUT_HEADPHONES,0);
 411         } else {
 412                 printk(KERN_INFO "Audio jack unplugged, enabling speakers.\n");
 413                 write_audio_gpio(gpio_amp_mute, !gpio_amp_mute_pol);
 414                 write_audio_gpio(gpio_headphone_mute, gpio_headphone_mute_pol);
 415                 tas_output_device_change(sound_device_id,TAS_OUTPUT_INTERNAL_SPKR,0);
 416         }
 417         spin_unlock_irqrestore(&dmasound.lock, flags);
 418         return IRQ_HANDLED;
 419 }
 420
 421
 422 /* Initialize tumbler */
 423
 424 static int
 425 tas_dmasound_init(void)
 426 {
 427         setup_audio_gpio(
 428                 "audio-hw-reset",
 429                 NULL,
 430                 &gpio_audio_reset,
 431                 &gpio_audio_reset_pol);
 432         setup_audio_gpio(
 433                 "amp-mute",
 434                 NULL,
 435                 &gpio_amp_mute,
 436                 &gpio_amp_mute_pol);
 437         setup_audio_gpio("headphone-mute",
 438                 NULL,
 439                 &gpio_headphone_mute,
 440                 &gpio_headphone_mute_pol);
 441         gpio_headphone_irq = setup_audio_gpio(
 442                 "headphone-detect",
 443                 NULL,
 444                 &gpio_headphone_detect,
 445                 &gpio_headphone_detect_pol);
 446         /* Fix some broken OF entries in desktop machines */
 447         if (!gpio_headphone_irq)
 448                 gpio_headphone_irq = setup_audio_gpio(
 449                         NULL,
 450                         "keywest-gpio15",
 451                         &gpio_headphone_detect,
 452                         &gpio_headphone_detect_pol);
 453
 454         write_audio_gpio(gpio_audio_reset, gpio_audio_reset_pol);
 455         msleep(100);
 456         write_audio_gpio(gpio_audio_reset, !gpio_audio_reset_pol);
 457         msleep(100);
 458         if (gpio_headphone_irq) {
 459                 if (request_irq(gpio_headphone_irq,headphone_intr,0,"Headphone detect",NULL) < 0) {
 460                         printk(KERN_ERR "tumbler: Can't request headphone interrupt\n");
 461                         gpio_headphone_irq = 0;
 462                 } else {
 463                         u8 val;
 464                         /* Activate headphone status interrupts */
 465                         val = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, gpio_headphone_detect, 0);
 466                         pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, gpio_headphone_detect, val | 0x80);
 467                         /* Trigger it */
 468                         headphone_intr(0, NULL);
 469                 }
 470         }
 471         if (!gpio_headphone_irq) {
 472                 /* Some machine enter this case ? */
 473                 printk(KERN_WARNING "tumbler: Headphone detect IRQ not found, enabling all outputs !\n");
 474                 write_audio_gpio(gpio_amp_mute, !gpio_amp_mute_pol);
 475                 write_audio_gpio(gpio_headphone_mute, !gpio_headphone_mute_pol);
 476         }
 477         return 0;
 478 }
 479
 480
 481 static int
 482 tas_dmasound_cleanup(void)
 483 {
 484         if (gpio_headphone_irq)
 485                 free_irq(gpio_headphone_irq, NULL);
 486         return 0;
 487 }
 488
 489 /* We don't support 48k yet */
 490 static int tas_freqs[1] = { 44100 } ;
 491 static int tas_freqs_ok[1] = { 1 } ;
 492
 493 /* don't know what to do really - just have to leave it where
 494  * OF left things
 495 */
 496
 497 static int
 498 tas_set_frame_rate(void)
 499 {
 500         if (i2s) {
 501                 out_le32(i2s + (I2S_REG_SERIAL_FORMAT >> 2), 0x41190000);
 502                 out_le32(i2s + (I2S_REG_DATAWORD_SIZES >> 2), 0x02000200);
 503         }
 504         dmasound.hard.speed = 44100 ;
 505         awacs_rate_index = 0 ;
 506         return 44100 ;
 507 }
 508
 509 static int
 510 tas_mixer_ioctl(u_int cmd, u_long arg)
 511 {
 512         int __user *argp = (int __user *)arg;
 513         int data;
 514         int rc;
 515
 516         rc=tas_device_ioctl(cmd, arg);
 517         if (rc != -EINVAL) {
 518                 return rc;
 519         }
 520
 521         if ((cmd & ~0xff) == MIXER_WRITE(0) &&
 522             tas_supported_mixers() & (1<<(cmd & 0xff))) {
 523                 rc = get_user(data, argp);
 524                 if (rc<0) return rc;
 525                 tas_set_mixer_level(cmd & 0xff, data);
 526                 tas_get_mixer_level(cmd & 0xff, &data);
 527                 return ioctl_return2(argp, data);
 528         }
 529         if ((cmd & ~0xff) == MIXER_READ(0) &&
 530             tas_supported_mixers() & (1<<(cmd & 0xff))) {
 531                 tas_get_mixer_level(cmd & 0xff, &data);
 532                 return ioctl_return2(argp, data);
 533         }
 534
 535         switch(cmd) {
 536         case SOUND_MIXER_READ_DEVMASK:
 537                 data = tas_supported_mixers() | SOUND_MASK_SPEAKER;
 538                 rc = IOCTL_OUT(arg, data);
 539                 break;
 540         case SOUND_MIXER_READ_STEREODEVS:
 541                 data = tas_stereo_mixers();
 542                 rc = IOCTL_OUT(arg, data);
 543                 break;
 544         case SOUND_MIXER_READ_CAPS:
 545                 rc = IOCTL_OUT(arg, 0);
 546                 break;
 547         case SOUND_MIXER_READ_RECMASK:
 548                 // XXX FIXME: find a way to check what is really available */
 549                 data = SOUND_MASK_LINE | SOUND_MASK_MIC;
 550                 rc = IOCTL_OUT(arg, data);
 551                 break;
 552         case SOUND_MIXER_READ_RECSRC:
 553                 if (awacs_reg[0] & MASK_MUX_AUDIN)
 554                         data |= SOUND_MASK_LINE;
 555                 if (awacs_reg[0] & MASK_MUX_MIC)
 556                         data |= SOUND_MASK_MIC;
 557                 rc = IOCTL_OUT(arg, data);
 558                 break;
 559         case SOUND_MIXER_WRITE_RECSRC:
 560                 IOCTL_IN(arg, data);
 561                 data =0;
 562                 rc = IOCTL_OUT(arg, data);
 563                 break;
 564         case SOUND_MIXER_WRITE_SPEAKER: /* really bell volume */
 565                 IOCTL_IN(arg, data);
 566                 beep_vol = data & 0xff;
 567                 /* fall through */
 568         case SOUND_MIXER_READ_SPEAKER:
 569                 rc = IOCTL_OUT(arg, (beep_vol<<8) | beep_vol);
 570                 break;
 571         case SOUND_MIXER_OUTMASK:
 572         case SOUND_MIXER_OUTSRC:
 573         default:
 574                 rc = -EINVAL;
 575         }
 576
 577         return rc;
 578 }
 579
 580 static void __init
 581 tas_init_frame_rates(unsigned int *prop, unsigned int l)
 582 {
 583         int i ;
 584         if (prop) {
 585                 for (i=0; i<1; i++)
 586                         tas_freqs_ok[i] = 0;
 587                 for (l /= sizeof(int); l > 0; --l) {
 588                         unsigned int r = *prop++;
 589                         /* Apple 'Fixed' format */
 590                         if (r >= 0x10000)
 591                                 r >>= 16;
 592                         for (i = 0; i < 1; ++i) {
 593                                 if (r == tas_freqs[i]) {
 594                                         tas_freqs_ok[i] = 1;
 595                                         break;
 596                                 }
 597                         }
 598                 }
 599         }
 600         /* else we assume that all the rates are available */
 601 }
 602
 603
 604 /*** AE - TUMBLER / SNAPPER END ************************************************/
 605
 606
 607
 608 /*** Low level stuff *********************************************************/
 609
 610 /*
 611  * PCI PowerMac, with AWACS, Screamer, Burgundy, DACA or Tumbler and DBDMA.
 612  */
 613 static void *PMacAlloc(unsigned int size, gfp_t flags)
 614 {
 615         return kmalloc(size, flags);
 616 }
 617
 618 static void PMacFree(void *ptr, unsigned int size)
 619 {
 620         kfree(ptr);
 621 }
 622
 623 static int __init PMacIrqInit(void)
 624 {
 625         if (awacs)
 626                 if (request_irq(awacs_irq, pmac_awacs_intr, 0, "Built-in Sound misc", NULL))
 627                         return 0;
 628         if (request_irq(awacs_tx_irq, pmac_awacs_tx_intr, 0, "Built-in Sound out", NULL)
 629             || request_irq(awacs_rx_irq, pmac_awacs_rx_intr, 0, "Built-in Sound in", NULL))
 630                 return 0;
 631         return 1;
 632 }
 633
 634 #ifdef MODULE
 635 static void PMacIrqCleanup(void)
 636 {
 637         /* turn off input & output dma */
 638         DBDMA_DO_STOP(awacs_txdma);
 639         DBDMA_DO_STOP(awacs_rxdma);
 640
 641         if (awacs)
 642                 /* disable interrupts from awacs interface */
 643                 out_le32(&awacs->control, in_le32(&awacs->control) & 0xfff);
 644
 645         /* Switch off the sound clock */
 646         pmac_call_feature(PMAC_FTR_SOUND_CHIP_ENABLE, awacs_node, 0, 0);
 647         /* Make sure proper bits are set on pismo & tipb */
 648         if ((machine_is_compatible("PowerBook3,1") ||
 649             machine_is_compatible("PowerBook3,2")) && awacs) {
 650                 awacs_reg[1] |= MASK_PAROUT0 | MASK_PAROUT1;
 651                 awacs_write(MASK_ADDR1 | awacs_reg[1]);
 652                 msleep(200);
 653         }
 654         if (awacs)
 655                 free_irq(awacs_irq, NULL);
 656         free_irq(awacs_tx_irq, NULL);
 657         free_irq(awacs_rx_irq, NULL);
 658
 659         if (awacs)
 660                 iounmap(awacs);
 661         if (i2s)
 662                 iounmap(i2s);
 663         iounmap(awacs_txdma);
 664         iounmap(awacs_rxdma);
 665
 666         release_mem_region(awacs_rsrc[0].start,
 667                            awacs_rsrc[0].end - awacs_rsrc[0].start + 1);
 668         release_mem_region(awacs_rsrc[1].start,
 669                            awacs_rsrc[1].end - awacs_rsrc[1].start + 1);
 670         release_mem_region(awacs_rsrc[2].start,
 671                            awacs_rsrc[2].end - awacs_rsrc[2].start + 1);
 672
 673         kfree(awacs_tx_cmd_space);
 674         kfree(awacs_rx_cmd_space);
 675         kfree(beep_dbdma_cmd_space);
 676         kfree(beep_buf);
 677 #ifdef CONFIG_PM
 678         pmu_unregister_sleep_notifier(&awacs_sleep_notifier);
 679 #endif
 680 }
 681 #endif /* MODULE */
 682
 683 static void PMacSilence(void)
 684 {
 685         /* turn off output dma */
 686         DBDMA_DO_STOP(awacs_txdma);
 687 }
 688
 689 /* don't know what to do really - just have to leave it where
 690  * OF left things
 691 */
 692
 693 static int daca_set_frame_rate(void)
 694 {
 695         if (i2s) {
 696                 out_le32(i2s + (I2S_REG_SERIAL_FORMAT >> 2), 0x41190000);
 697                 out_le32(i2s + (I2S_REG_DATAWORD_SIZES >> 2), 0x02000200);
 698         }
 699         dmasound.hard.speed = 44100 ;
 700         awacs_rate_index = 0 ;
 701         return 44100 ;
 702 }
 703
 704 static int awacs_freqs[8] = {
 705         44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350
 706 };
 707 static int awacs_freqs_ok[8] = { 1, 1, 1, 1, 1, 1, 1, 1 };
 708
 709 static int
 710 awacs_set_frame_rate(int desired, int catch_r)
 711 {
 712         int tolerance, i = 8 ;
 713         /*
 714          * If we have a sample rate which is within catchRadius percent
 715          * of the requested value, we don't have to expand the samples.
 716          * Otherwise choose the next higher rate.
 717          * N.B.: burgundy awacs only works at 44100 Hz.
 718          */
 719         do {
 720                 tolerance = catch_r * awacs_freqs[--i] / 100;
 721                 if (awacs_freqs_ok[i]
 722                     && dmasound.soft.speed <= awacs_freqs[i] + tolerance)
 723                         break;
 724         } while (i > 0);
 725         dmasound.hard.speed = awacs_freqs[i];
 726         awacs_rate_index = i;
 727
 728         out_le32(&awacs->control, MASK_IEPC | (i << 8) | 0x11 );
 729         awacs_reg[1] = (awacs_reg[1] & ~MASK_SAMPLERATE) | (i << 3);
 730         awacs_write(awacs_reg[1] | MASK_ADDR1);
 731         return dmasound.hard.speed;
 732 }
 733
 734 static int
 735 burgundy_set_frame_rate(void)
 736 {
 737         awacs_rate_index = 0 ;
 738         awacs_reg[1] = (awacs_reg[1] & ~MASK_SAMPLERATE) ;
 739         /* XXX disable error interrupt on burgundy for now */
 740         out_le32(&awacs->control, MASK_IEPC | 0 | 0x11 | MASK_IEE);
 741         return 44100 ;
 742 }
 743
 744 static int
 745 set_frame_rate(int desired, int catch_r)
 746 {
 747         switch (awacs_revision) {
 748                 case AWACS_BURGUNDY:
 749                         dmasound.hard.speed = burgundy_set_frame_rate();
 750                         break ;
 751                 case AWACS_TUMBLER:
 752                 case AWACS_SNAPPER:
 753                         dmasound.hard.speed = tas_set_frame_rate();
 754                         break ;
 755                 case AWACS_DACA:
 756                         dmasound.hard.speed =
 757                           daca_set_frame_rate();
 758                         break ;
 759                 default:
 760                         dmasound.hard.speed = awacs_set_frame_rate(desired,
 761                                                 catch_r);
 762                         break ;
 763         }
 764         return dmasound.hard.speed ;
 765 }
 766
 767 static void
 768 awacs_recalibrate(void)
 769 {
 770         /* Sorry for the horrible delays... I hope to get that improved
 771          * by making the whole PM process asynchronous in a future version
 772          */
 773         msleep(750);
 774         awacs_reg[1] |= MASK_CMUTE | MASK_AMUTE;
 775         awacs_write(awacs_reg[1] | MASK_RECALIBRATE | MASK_ADDR1);
 776         msleep(1000);
 777         awacs_write(awacs_reg[1] | MASK_ADDR1);
 778 }
 779
 780 static void PMacInit(void)
 781 {
 782         int tolerance;
 783
 784         switch (dmasound.soft.format) {
 785             case AFMT_S16_LE:
 786             case AFMT_U16_LE:
 787                 if (hw_can_byteswap)
 788                         dmasound.hard.format = AFMT_S16_LE;
 789                 else
 790                         dmasound.hard.format = AFMT_S16_BE;
 791                 break;
 792         default:
 793                 dmasound.hard.format = AFMT_S16_BE;
 794                 break;
 795         }
 796         dmasound.hard.stereo = 1;
 797         dmasound.hard.size = 16;
 798
 799         /* set dmasound.hard.speed - on the basis of what we want (soft)
 800          * and the tolerance we'll allow.
 801         */
 802         set_frame_rate(dmasound.soft.speed, catchRadius) ;
 803
 804         tolerance = (catchRadius * dmasound.hard.speed) / 100;
 805         if (dmasound.soft.speed >= dmasound.hard.speed - tolerance) {
 806                 dmasound.trans_write = &transAwacsNormal;
 807                 dmasound.trans_read = &transAwacsNormalRead;
 808         } else {
 809                 dmasound.trans_write = &transAwacsExpand;
 810                 dmasound.trans_read = &transAwacsExpandRead;
 811         }
 812
 813         if (awacs) {
 814                 if (hw_can_byteswap && (dmasound.hard.format == AFMT_S16_LE))
 815                         out_le32(&awacs->byteswap, BS_VAL);
 816                 else
 817                         out_le32(&awacs->byteswap, 0);
 818         }
 819
 820         expand_bal = -dmasound.soft.speed;
 821         expand_read_bal = -dmasound.soft.speed;
 822 }
 823
 824 static int PMacSetFormat(int format)
 825 {
 826         int size;
 827         int req_format = format;
 828
 829         switch (format) {
 830         case AFMT_QUERY:
 831                 return dmasound.soft.format;
 832         case AFMT_MU_LAW:
 833         case AFMT_A_LAW:
 834         case AFMT_U8:
 835         case AFMT_S8:
 836                 size = 8;
 837                 break;
 838         case AFMT_S16_LE:
 839                 if(!hw_can_byteswap)
 840                         format = AFMT_S16_BE;
 841         case AFMT_S16_BE:
 842                 size = 16;
 843                 break;
 844         case AFMT_U16_LE:
 845                 if(!hw_can_byteswap)
 846                         format = AFMT_U16_BE;
 847         case AFMT_U16_BE:
 848                 size = 16;
 849                 break;
 850         default: /* :-) */
 851                 printk(KERN_ERR "dmasound: unknown format 0x%x, using AFMT_U8\n",
 852                        format);
 853                 size = 8;
 854                 format = AFMT_U8;
 855         }
 856
 857         if (req_format == format) {
 858                 dmasound.soft.format = format;
 859                 dmasound.soft.size = size;
 860                 if (dmasound.minDev == SND_DEV_DSP) {
 861                         dmasound.dsp.format = format;
 862                         dmasound.dsp.size = size;
 863                 }
 864         }
 865
 866         return format;
 867 }
 868
 869 #define AWACS_VOLUME_TO_MASK(x) (15 - ((((x) - 1) * 15) / 99))
 870 #define AWACS_MASK_TO_VOLUME(y) (100 - ((y) * 99 / 15))
 871
 872 static int awacs_get_volume(int reg, int lshift)
 873 {
 874         int volume;
 875
 876         volume = AWACS_MASK_TO_VOLUME((reg >> lshift) & 0xf);
 877         volume |= AWACS_MASK_TO_VOLUME(reg & 0xf) << 8;
 878         return volume;
 879 }
 880
 881 static int awacs_volume_setter(int volume, int n, int mute, int lshift)
 882 {
 883         int r1, rn;
 884
 885         if (mute && volume == 0) {
 886                 r1 = awacs_reg[1] | mute;
 887         } else {
 888                 r1 = awacs_reg[1] & ~mute;
 889                 rn = awacs_reg[n] & ~(0xf | (0xf << lshift));
 890                 rn |= ((AWACS_VOLUME_TO_MASK(volume & 0xff) & 0xf) << lshift);
 891                 rn |= AWACS_VOLUME_TO_MASK((volume >> 8) & 0xff) & 0xf;
 892                 awacs_reg[n] = rn;
 893                 awacs_write((n << 12) | rn);
 894                 volume = awacs_get_volume(rn, lshift);
 895         }
 896         if (r1 != awacs_reg[1]) {
 897                 awacs_reg[1] = r1;
 898                 awacs_write(r1 | MASK_ADDR1);
 899         }
 900         return volume;
 901 }
 902
 903 static int PMacSetVolume(int volume)
 904 {
 905         printk(KERN_WARNING "Bogus call to PMacSetVolume !\n");
 906         return 0;
 907 }
 908
 909 static void awacs_setup_for_beep(int speed)
 910 {
 911         out_le32(&awacs->control,
 912                  (in_le32(&awacs->control) & ~0x1f00)
 913                  | ((speed > 0 ? speed : awacs_rate_index) << 8));
 914
 915         if (hw_can_byteswap && (dmasound.hard.format == AFMT_S16_LE) && speed == -1)
 916                 out_le32(&awacs->byteswap, BS_VAL);
 917         else
 918                 out_le32(&awacs->byteswap, 0);
 919 }
 920
 921 /* CHECK: how much of this *really* needs IRQs masked? */
 922 static void __PMacPlay(void)
 923 {
 924         volatile struct dbdma_cmd *cp;
 925         int next_frg, count;
 926
 927         count = 300 ; /* > two cycles at the lowest sample rate */
 928
 929         /* what we want to send next */
 930         next_frg = (write_sq.front + write_sq.active) % write_sq.max_count;
 931
 932         if (awacs_beep_state) {
 933                 /* sound takes precedence over beeps */
 934                 /* stop the dma channel */
 935                 out_le32(&awacs_txdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
 936                 while ( (in_le32(&awacs_txdma->status) & RUN) && count--)
 937                         udelay(1);
 938                 if (awacs)
 939                         awacs_setup_for_beep(-1);
 940                 out_le32(&awacs_txdma->cmdptr,
 941                          virt_to_bus(&(awacs_tx_cmds[next_frg])));
 942
 943                 beep_playing = 0;
 944                 awacs_beep_state = 0;
 945         }
 946         /* this won't allow more than two frags to be in the output queue at
 947            once. (or one, if the max frags is 2 - because count can't exceed
 948            2 in that case)
 949         */
 950         while (write_sq.active < 2 && write_sq.active < write_sq.count) {
 951                 count = (write_sq.count == write_sq.active + 1) ?
 952                                 write_sq.rear_size:write_sq.block_size ;
 953                 if (count < write_sq.block_size) {
 954                         if (!write_sq.syncing) /* last block not yet filled,*/
 955                                 break;  /* and we're not syncing or POST-ed */
 956                         else {
 957                                 /* pretend the block is full to force a new
 958                                    block to be started on the next write */
 959                                 write_sq.rear_size = write_sq.block_size ;
 960                                 write_sq.syncing &= ~2 ; /* clear POST */
 961                         }
 962                 }
 963                 cp = &awacs_tx_cmds[next_frg];
 964                 st_le16(&cp->req_count, count);
 965                 st_le16(&cp->xfer_status, 0);
 966                 st_le16(&cp->command, OUTPUT_MORE + INTR_ALWAYS);
 967                 /* put a STOP at the end of the queue - but only if we have
 968                    space for it.  This means that, if we under-run and we only
 969                    have two fragments, we might re-play sound from an existing
 970                    queued frag.  I guess the solution to that is not to set two
 971                    frags if you are likely to under-run...
 972                 */
 973                 if (write_sq.count < write_sq.max_count) {
 974                         if (++next_frg >= write_sq.max_count)
 975                                 next_frg = 0 ; /* wrap */
 976                         /* if we get here then we've underrun so we will stop*/
 977                         st_le16(&awacs_tx_cmds[next_frg].command, DBDMA_STOP);
 978                 }
 979                 /* set the dbdma controller going, if it is not already */
 980                 if (write_sq.active == 0)
 981                         out_le32(&awacs_txdma->cmdptr, virt_to_bus(cp));
 982                 (void)in_le32(&awacs_txdma->status);
 983                 out_le32(&awacs_txdma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
 984                 ++write_sq.active;
 985         }
 986 }
 987
 988 static void PMacPlay(void)
 989 {
 990         LOCK();
 991         if (!awacs_sleeping) {
 992                 unsigned long flags;
 993
 994                 spin_lock_irqsave(&dmasound.lock, flags);
 995                 __PMacPlay();
 996                 spin_unlock_irqrestore(&dmasound.lock, flags);
 997         }
 998         UNLOCK();
 999 }
1000
1001 static void PMacRecord(void)
1002 {
1003         unsigned long flags;
1004
1005         if (read_sq.active)
1006                 return;
1007
1008         spin_lock_irqsave(&dmasound.lock, flags);
1009
1010         /* This is all we have to do......Just start it up.
1011         */
1012         out_le32(&awacs_rxdma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));
1013         read_sq.active = 1;
1014
1015         spin_unlock_irqrestore(&dmasound.lock, flags);
1016 }
1017
1018 /* if the TX status comes up "DEAD" - reported on some Power Computing machines
1019    we need to re-start the dbdma - but from a different physical start address
1020    and with a different transfer length.  It would get very messy to do this
1021    with the normal dbdma_cmd blocks - we would have to re-write the buffer start
1022    addresses each time.  So, we will keep a single dbdma_cmd block which can be
1023    fiddled with.
1024    When DEAD status is first reported the content of the faulted dbdma block is
1025    copied into the emergency buffer and we note that the buffer is in use.
1026    we then bump the start physical address by the amount that was successfully
1027    output before it died.
1028    On any subsequent DEAD result we just do the bump-ups (we know that we are
1029    already using the emergency dbdma_cmd).
1030    CHECK: this just tries to "do it".  It is possible that we should abandon
1031    xfers when the number of residual bytes gets below a certain value - I can
1032    see that this might cause a loop-forever if too small a transfer causes
1033    DEAD status.  However this is a TODO for now - we'll see what gets reported.
1034    When we get a successful transfer result with the emergency buffer we just
1035    pretend that it completed using the original dmdma_cmd and carry on.  The
1036    'next_cmd' field will already point back to the original loop of blocks.
1037 */
1038
1039 static irqreturn_t
1040 pmac_awacs_tx_intr(int irq, void *devid)
1041 {
1042         int i = write_sq.front;
1043         int stat;
1044         int i_nowrap = write_sq.front;
1045         volatile struct dbdma_cmd *cp;
1046         /* != 0 when we are dealing with a DEAD xfer */
1047         static int emergency_in_use;
1048
1049         spin_lock(&dmasound.lock);
1050         while (write_sq.active > 0) { /* we expect to have done something*/
1051                 if (emergency_in_use) /* we are dealing with DEAD xfer */
1052                         cp = emergency_dbdma_cmd ;
1053                 else
1054                         cp = &awacs_tx_cmds[i];
1055                 stat = ld_le16(&cp->xfer_status);
1056                 if (stat & DEAD) {
1057                         unsigned short req, res ;
1058                         unsigned int phy ;
1059 #ifdef DEBUG_DMASOUND
1060 printk("dmasound_pmac: tx-irq: xfer died - patching it up...\n") ;
1061 #endif
1062                         /* to clear DEAD status we must first clear RUN
1063                            set it to quiescent to be on the safe side */
1064                         (void)in_le32(&awacs_txdma->status);
1065                         out_le32(&awacs_txdma->control,
1066                                 (RUN|PAUSE|FLUSH|WAKE) << 16);
1067                         write_sq.died++ ;
1068                         if (!emergency_in_use) { /* new problem */
1069                                 memcpy((void *)emergency_dbdma_cmd, (void *)cp,
1070                                         sizeof(struct dbdma_cmd));
1071                                 emergency_in_use = 1;
1072                                 cp = emergency_dbdma_cmd;
1073                         }
1074                         /* now bump the values to reflect the amount
1075                            we haven't yet shifted */
1076                         req = ld_le16(&cp->req_count);
1077                         res = ld_le16(&cp->res_count);
1078                         phy = ld_le32(&cp->phy_addr);
1079                         phy += (req - res);
1080                         st_le16(&cp->req_count, res);
1081                         st_le16(&cp->res_count, 0);
1082                         st_le16(&cp->xfer_status, 0);
1083                         st_le32(&cp->phy_addr, phy);
1084                         st_le32(&cp->cmd_dep, virt_to_bus(&awacs_tx_cmds[(i+1)%write_sq.max_count]));
1085                         st_le16(&cp->command, OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS);
1086
1087                         /* point at our patched up command block */
1088                         out_le32(&awacs_txdma->cmdptr, virt_to_bus(cp));
1089                         /* we must re-start the controller */
1090                         (void)in_le32(&awacs_txdma->status);
1091                         /* should complete clearing the DEAD status */
1092                         out_le32(&awacs_txdma->control,
1093                                 ((RUN|WAKE) << 16) + (RUN|WAKE));
1094                         break; /* this block is still going */
1095                 }
1096                 if ((stat & ACTIVE) == 0)
1097                         break;  /* this frame is still going */
1098                 if (emergency_in_use)
1099                         emergency_in_use = 0 ; /* done that */
1100                 --write_sq.count;
1101                 --write_sq.active;
1102                 i_nowrap++;
1103                 if (++i >= write_sq.max_count)
1104                         i = 0;
1105         }
1106
1107         /* if we stopped and we were not sync-ing - then we under-ran */
1108         if( write_sq.syncing == 0 ){
1109                 stat = in_le32(&awacs_txdma->status) ;
1110                 /* we hit the dbdma_stop */
1111                 if( (stat & ACTIVE) == 0 ) write_sq.xruns++ ;
1112         }
1113
1114         /* if we used some data up then wake the writer to supply some more*/
1115         if (i_nowrap != write_sq.front)
1116                 WAKE_UP(write_sq.action_queue);
1117         write_sq.front = i;
1118
1119         /* but make sure we funnel what we've already got */\
1120          if (!awacs_sleeping)
1121                 __PMacPlay();
1122
1123         /* make the wake-on-empty conditional on syncing */
1124         if (!write_sq.active && (write_sq.syncing & 1))
1125                 WAKE_UP(write_sq.sync_queue); /* any time we're empty */
1126         spin_unlock(&dmasound.lock);
1127         return IRQ_HANDLED;
1128 }
1129
1130
1131 static irqreturn_t
1132 pmac_awacs_rx_intr(int irq, void *devid)
1133 {
1134         int stat ;
1135         /* For some reason on my PowerBook G3, I get one interrupt
1136          * when the interrupt vector is installed (like something is
1137          * pending).  This happens before the dbdma is initialized by
1138          * us, so I just check the command pointer and if it is zero,
1139          * just blow it off.
1140          */
1141         if (in_le32(&awacs_rxdma->cmdptr) == 0)
1142                 return IRQ_HANDLED;
1143
1144         /* We also want to blow 'em off when shutting down.
1145         */
1146         if (read_sq.active == 0)
1147                 return IRQ_HANDLED;
1148
1149         spin_lock(&dmasound.lock);
1150         /* Check multiple buffers in case we were held off from
1151          * interrupt processing for a long time.  Geeze, I really hope
1152          * this doesn't happen.
1153          */
1154         while ((stat=awacs_rx_cmds[read_sq.rear].xfer_status)) {
1155
1156                 /* if we got a "DEAD" status then just log it for now.
1157                    and try to restart dma.
1158                    TODO: figure out how best to fix it up
1159                 */
1160                 if (stat & DEAD){
1161 #ifdef DEBUG_DMASOUND
1162 printk("dmasound_pmac: rx-irq: DIED - attempting resurection\n");
1163 #endif
1164                         /* to clear DEAD status we must first clear RUN
1165                            set it to quiescent to be on the safe side */
1166                         (void)in_le32(&awacs_txdma->status);
1167                         out_le32(&awacs_txdma->control,
1168                                 (RUN|PAUSE|FLUSH|WAKE) << 16);
1169                         awacs_rx_cmds[read_sq.rear].xfer_status = 0;
1170                         awacs_rx_cmds[read_sq.rear].res_count = 0;
1171                         read_sq.died++ ;
1172                         (void)in_le32(&awacs_txdma->status);
1173                         /* re-start the same block */
1174                         out_le32(&awacs_rxdma->cmdptr,
1175                                 virt_to_bus(&awacs_rx_cmds[read_sq.rear]));
1176                         /* we must re-start the controller */
1177                         (void)in_le32(&awacs_rxdma->status);
1178                         /* should complete clearing the DEAD status */
1179                         out_le32(&awacs_rxdma->control,
1180                                 ((RUN|WAKE) << 16) + (RUN|WAKE));
1181                         spin_unlock(&dmasound.lock);
1182                         return IRQ_HANDLED; /* try this block again */
1183                 }
1184                 /* Clear status and move on to next buffer.
1185                 */
1186                 awacs_rx_cmds[read_sq.rear].xfer_status = 0;
1187                 read_sq.rear++;
1188
1189                 /* Wrap the buffer ring.
1190                 */
1191                 if (read_sq.rear >= read_sq.max_active)
1192                         read_sq.rear = 0;
1193
1194                 /* If we have caught up to the front buffer, bump it.
1195                  * This will cause weird (but not fatal) results if the
1196                  * read loop is currently using this buffer.  The user is
1197                  * behind in this case anyway, so weird things are going
1198                  * to happen.
1199                  */
1200                 if (read_sq.rear == read_sq.front) {
1201                         read_sq.front++;
1202                         read_sq.xruns++ ; /* we overan */
1203                         if (read_sq.front >= read_sq.max_active)
1204                                 read_sq.front = 0;
1205                 }
1206         }
1207
1208         WAKE_UP(read_sq.action_queue);
1209         spin_unlock(&dmasound.lock);
1210         return IRQ_HANDLED;
1211 }
1212
1213
1214 static irqreturn_t
1215 pmac_awacs_intr(int irq, void *devid)
1216 {
1217         int ctrl;
1218         int status;
1219         int r1;
1220
1221         spin_lock(&dmasound.lock);
1222         ctrl = in_le32(&awacs->control);
1223         status = in_le32(&awacs->codec_stat);
1224
1225         if (ctrl & MASK_PORTCHG) {
1226                 /* tested on Screamer, should work on others too */
1227                 if (awacs_revision == AWACS_SCREAMER) {
1228                         if (((status & MASK_HDPCONN) >> 3) && (hdp_connected == 0)) {
1229                                 hdp_connected = 1;
1230
1231                                 r1 = awacs_reg[1] | MASK_SPKMUTE;
1232                                 awacs_reg[1] = r1;
1233                                 awacs_write(r1 | MASK_ADDR_MUTE);
1234                         } else if (((status & MASK_HDPCONN) >> 3 == 0) && (hdp_connected == 1)) {
1235                                 hdp_connected = 0;
1236
1237                                 r1 = awacs_reg[1] & ~MASK_SPKMUTE;
1238                                 awacs_reg[1] = r1;
1239                                 awacs_write(r1 | MASK_ADDR_MUTE);
1240                         }
1241                 }
1242         }
1243         if (ctrl & MASK_CNTLERR) {
1244                 int err = (in_le32(&awacs->codec_stat) & MASK_ERRCODE) >> 16;
1245                 /* CHECK: we just swallow burgundy errors at the moment..*/
1246                 if (err != 0 && awacs_revision != AWACS_BURGUNDY)
1247                         printk(KERN_ERR "dmasound_pmac: error %x\n", err);
1248         }
1249         /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */
1250         out_le32(&awacs->control, ctrl);
1251         spin_unlock(&dmasound.lock);
1252         return IRQ_HANDLED;
1253 }
1254
1255 static void
1256 awacs_write(int val)
1257 {
1258         int count = 300 ;
1259         if (awacs_revision >= AWACS_DACA || !awacs)
1260                 return ;
1261
1262         while ((in_le32(&awacs->codec_ctrl) & MASK_NEWECMD) && count--)
1263                 udelay(1) ;     /* timeout is > 2 samples at lowest rate */
1264         out_le32(&awacs->codec_ctrl, val | (awacs_subframe << 22));
1265         (void)in_le32(&awacs->byteswap);
1266 }
1267
1268 /* this is called when the beep timer expires... it will be called even
1269    if the beep has been overidden by other sound output.
1270 */
1271 static void awacs_nosound(unsigned long xx)
1272 {
1273         unsigned long flags;
1274         int count = 600 ; /* > four samples at lowest rate */
1275
1276         spin_lock_irqsave(&dmasound.lock, flags);
1277         if (beep_playing) {
1278                 st_le16(&beep_dbdma_cmd->command, DBDMA_STOP);
1279                 out_le32(&awacs_txdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
1280                 while ((in_le32(&awacs_txdma->status) & RUN) && count--)
1281                         udelay(1);
1282                 if (awacs)
1283                         awacs_setup_for_beep(-1);
1284                 beep_playing = 0;
1285         }
1286         spin_unlock_irqrestore(&dmasound.lock, flags);
1287 }
1288
1289 /*
1290  * We generate the beep with a single dbdma command that loops a buffer
1291  * forever - without generating interrupts.
1292  *
1293  * So, to stop it you have to stop dma output as per awacs_nosound.
1294  */
1295 static int awacs_beep_event(struct input_dev *dev, unsigned int type,
1296                 unsigned int code, int hz)
1297 {
1298         unsigned long flags;
1299         int beep_speed = 0;
1300         int srate;
1301         int period, ncycles, nsamples;
1302         int i, j, f;
1303         short *p;
1304         static int beep_hz_cache;
1305         static int beep_nsamples_cache;
1306         static int beep_volume_cache;
1307
1308         if (type != EV_SND)
1309                 return -1;
1310         switch (code) {
1311         case SND_BELL:
1312                 if (hz)
1313                         hz = 1000;
1314                 break;
1315         case SND_TONE:
1316                 break;
1317         default:
1318                 return -1;
1319         }
1320
1321         if (beep_buf == NULL)
1322                 return -1;
1323
1324         /* quick-hack fix for DACA, Burgundy & Tumbler */
1325
1326         if (awacs_revision >= AWACS_DACA){
1327                 srate = 44100 ;
1328         } else {
1329                 for (i = 0; i < 8 && awacs_freqs[i] >= BEEP_SRATE; ++i)
1330                         if (awacs_freqs_ok[i])
1331                                 beep_speed = i;
1332                 srate = awacs_freqs[beep_speed];
1333         }
1334
1335         if (hz <= srate / BEEP_BUFLEN || hz > srate / 2) {
1336                 /* cancel beep currently playing */
1337                 awacs_nosound(0);
1338                 return 0;
1339         }
1340
1341         spin_lock_irqsave(&dmasound.lock, flags);
1342         if (beep_playing || write_sq.active || beep_buf == NULL) {
1343                 spin_unlock_irqrestore(&dmasound.lock, flags);
1344                 return -1;              /* too hard, sorry :-( */
1345         }
1346         beep_playing = 1;
1347         st_le16(&beep_dbdma_cmd->command, OUTPUT_MORE + BR_ALWAYS);
1348         spin_unlock_irqrestore(&dmasound.lock, flags);
1349
1350         if (hz == beep_hz_cache && beep_vol == beep_volume_cache) {
1351                 nsamples = beep_nsamples_cache;
1352         } else {
1353                 period = srate * 256 / hz;      /* fixed point */
1354                 ncycles = BEEP_BUFLEN * 256 / period;
1355                 nsamples = (period * ncycles) >> 8;
1356                 f = ncycles * 65536 / nsamples;
1357                 j = 0;
1358                 p = beep_buf;
1359                 for (i = 0; i < nsamples; ++i, p += 2) {
1360                         p[0] = p[1] = beep_wform[j >> 8] * beep_vol;
1361                         j = (j + f) & 0xffff;
1362                 }
1363                 beep_hz_cache = hz;
1364                 beep_volume_cache = beep_vol;
1365                 beep_nsamples_cache = nsamples;
1366         }
1367
1368         st_le16(&beep_dbdma_cmd->req_count, nsamples*4);
1369         st_le16(&beep_dbdma_cmd->xfer_status, 0);
1370         st_le32(&beep_dbdma_cmd->cmd_dep, virt_to_bus(beep_dbdma_cmd));
1371         st_le32(&beep_dbdma_cmd->phy_addr, virt_to_bus(beep_buf));
1372         awacs_beep_state = 1;
1373
1374         spin_lock_irqsave(&dmasound.lock, flags);
1375         if (beep_playing) {     /* i.e. haven't been terminated already */
1376                 int count = 300 ;
1377                 out_le32(&awacs_txdma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);
1378                 while ((in_le32(&awacs_txdma->status) & RUN) && count--)
1379                         udelay(1); /* timeout > 2 samples at lowest rate*/
1380                 if (awacs)
1381                         awacs_setup_for_beep(beep_speed);
1382                 out_le32(&awacs_txdma->cmdptr, virt_to_bus(beep_dbdma_cmd));
1383                 (void)in_le32(&awacs_txdma->status);
1384                 out_le32(&awacs_txdma->control, RUN | (RUN << 16));
1385         }
1386         spin_unlock_irqrestore(&dmasound.lock, flags);
1387
1388         return 0;
1389 }
1390
1391 /* used in init and for wake-up */
1392
1393 static void
1394 load_awacs(void)
1395 {
1396         awacs_write(awacs_reg[0] + MASK_ADDR0);
1397         awacs_write(awacs_reg[1] + MASK_ADDR1);
1398         awacs_write(awacs_reg[2] + MASK_ADDR2);
1399         awacs_write(awacs_reg[4] + MASK_ADDR4);
1400
1401         if (awacs_revision == AWACS_SCREAMER) {
1402                 awacs_write(awacs_reg[5] + MASK_ADDR5);
1403                 msleep(100);
1404                 awacs_write(awacs_reg[6] + MASK_ADDR6);
1405                 msleep(2);
1406                 awacs_write(awacs_reg[1] + MASK_ADDR1);
1407                 awacs_write(awacs_reg[7] + MASK_ADDR7);
1408         }
1409         if (awacs) {
1410                 if (hw_can_byteswap && (dmasound.hard.format == AFMT_S16_LE))
1411                         out_le32(&awacs->byteswap, BS_VAL);
1412                 else
1413                         out_le32(&awacs->byteswap, 0);
1414         }
1415 }
1416
1417 #ifdef CONFIG_PM
1418 /*
1419  * Save state when going to sleep, restore it afterwards.
1420  */
1421 /* FIXME: sort out disabling/re-enabling of read stuff as well */
1422 static void awacs_sleep_notify(struct pmu_sleep_notifier *self, int when)
1423 {
1424         unsigned long flags;
1425
1426         switch (when) {
1427         case PBOOK_SLEEP_NOW:
1428                 LOCK();
1429                 awacs_sleeping = 1;
1430                 /* Tell the rest of the driver we are now going to sleep */
1431                 mb();
1432                 if (awacs_revision == AWACS_SCREAMER ||
1433                     awacs_revision == AWACS_AWACS) {
1434                         awacs_reg1_save = awacs_reg[1];
1435                         awacs_reg[1] |= MASK_AMUTE | MASK_CMUTE;
1436                         awacs_write(MASK_ADDR1 | awacs_reg[1]);
1437                 }
1438
1439                 PMacSilence();
1440                 /* stop rx - if going - a bit of a daft user... but */
1441                 out_le32(&awacs_rxdma->control, (RUN|WAKE|FLUSH << 16));
1442                 /* deny interrupts */
1443                 if (awacs)
1444                         disable_irq(awacs_irq);
1445                 disable_irq(awacs_tx_irq);
1446                 disable_irq(awacs_rx_irq);
1447                 /* Chip specific sleep code */
1448                 switch (awacs_revision) {
1449                         case AWACS_TUMBLER:
1450                         case AWACS_SNAPPER:
1451                                 write_audio_gpio(gpio_headphone_mute, gpio_headphone_mute_pol);
1452                                 write_audio_gpio(gpio_amp_mute, gpio_amp_mute_pol);
1453                                 tas_enter_sleep();
1454                                 write_audio_gpio(gpio_audio_reset, gpio_audio_reset_pol);
1455                                 break ;
1456                         case AWACS_DACA:
1457                                 daca_enter_sleep();
1458                                 break ;
1459                         case AWACS_BURGUNDY:
1460                                 break ;
1461                         case AWACS_SCREAMER:
1462                         case AWACS_AWACS:
1463                         default:
1464                                 out_le32(&awacs->control, 0x11) ;
1465                                 break ;
1466                 }
1467                 /* Disable sound clock */
1468                 pmac_call_feature(PMAC_FTR_SOUND_CHIP_ENABLE, awacs_node, 0, 0);
1469                 /* According to Darwin, we do that after turning off the sound
1470                  * chip clock. All this will have to be cleaned up once we properly
1471                  * parse the OF sound-objects
1472                  */
1473                 if ((machine_is_compatible("PowerBook3,1") ||
1474                     machine_is_compatible("PowerBook3,2")) && awacs) {
1475                         awacs_reg[1] |= MASK_PAROUT0 | MASK_PAROUT1;
1476                         awacs_write(MASK_ADDR1 | awacs_reg[1]);
1477                         msleep(200);
1478                 }
1479                 break;
1480         case PBOOK_WAKE:
1481                 /* Enable sound clock */
1482                 pmac_call_feature(PMAC_FTR_SOUND_CHIP_ENABLE, awacs_node, 0, 1);
1483                 if ((machine_is_compatible("PowerBook3,1") ||
1484                     machine_is_compatible("PowerBook3,2")) && awacs) {
1485                         msleep(100);
1486                         awacs_reg[1] &= ~(MASK_PAROUT0 | MASK_PAROUT1);
1487                         awacs_write(MASK_ADDR1 | awacs_reg[1]);
1488                         msleep(300);
1489                 } else
1490                         msleep(1000);
1491                 /* restore settings */
1492                 switch (awacs_revision) {
1493                         case AWACS_TUMBLER:
1494                         case AWACS_SNAPPER:
1495                                 write_audio_gpio(gpio_headphone_mute, gpio_headphone_mute_pol);
1496                                 write_audio_gpio(gpio_amp_mute, gpio_amp_mute_pol);
1497                                 write_audio_gpio(gpio_audio_reset, gpio_audio_reset_pol);
1498                                 msleep(100);
1499                                 write_audio_gpio(gpio_audio_reset, !gpio_audio_reset_pol);
1500                                 msleep(150);
1501                                 tas_leave_sleep(); /* Stub for now */
1502                                 headphone_intr(0, NULL);
1503                                 break;
1504                         case AWACS_DACA:
1505                                 msleep(10); /* Check this !!! */
1506                                 daca_leave_sleep();
1507                                 break ;         /* dont know how yet */
1508                         case AWACS_BURGUNDY:
1509                                 break ;
1510                         case AWACS_SCREAMER:
1511                         case AWACS_AWACS:
1512                         default:
1513                                 load_awacs() ;
1514                                 break ;
1515                 }
1516                 /* Recalibrate chip */
1517                 if (awacs_revision == AWACS_SCREAMER && awacs)
1518                         awacs_recalibrate();
1519                 /* Make sure dma is stopped */
1520                 PMacSilence();
1521                 if (awacs)
1522                         enable_irq(awacs_irq);
1523                 enable_irq(awacs_tx_irq);
1524                 enable_irq(awacs_rx_irq);
1525                 if (awacs) {
1526                         /* OK, allow ints back again */
1527                         out_le32(&awacs->control, MASK_IEPC
1528                                 | (awacs_rate_index << 8) | 0x11
1529                                  | (awacs_revision < AWACS_DACA ? MASK_IEE: 0));
1530                 }
1531                 if (macio_base && is_pbook_g3) {
1532                         /* FIXME: should restore the setup we had...*/
1533                         out_8(macio_base + 0x37, 3);
1534                 } else if (is_pbook_3X00) {
1535                         in_8(latch_base + 0x190);
1536                 }
1537                 /* Remove mute */
1538                 if (awacs_revision == AWACS_SCREAMER ||
1539                     awacs_revision == AWACS_AWACS) {
1540                         awacs_reg[1] = awacs_reg1_save;
1541                         awacs_write(MASK_ADDR1 | awacs_reg[1]);
1542                 }
1543                 awacs_sleeping = 0;
1544                 /* Resume pending sounds. */
1545                 /* we don't try to restart input... */
1546                 spin_lock_irqsave(&dmasound.lock, flags);
1547                 __PMacPlay();
1548                 spin_unlock_irqrestore(&dmasound.lock, flags);
1549                 UNLOCK();
1550         }
1551 }
1552 #endif /* CONFIG_PM */
1553
1554
1555 /* All the burgundy functions: */
1556
1557 /* Waits for busy flag to clear */
1558 static inline void
1559 awacs_burgundy_busy_wait(void)
1560 {
1561         int count = 50; /* > 2 samples at 44k1 */
1562         while ((in_le32(&awacs->codec_ctrl) & MASK_NEWECMD) && count--)
1563                 udelay(1) ;
1564 }
1565
1566 static inline void
1567 awacs_burgundy_extend_wait(void)
1568 {
1569         int count = 50 ; /* > 2 samples at 44k1 */
1570         while ((!(in_le32(&awacs->codec_stat) & MASK_EXTEND)) && count--)
1571                 udelay(1) ;
1572         count = 50;
1573         while ((in_le32(&awacs->codec_stat) & MASK_EXTEND) && count--)
1574                 udelay(1);
1575 }
1576
1577 static void
1578 awacs_burgundy_wcw(unsigned addr, unsigned val)
1579 {
1580         out_le32(&awacs->codec_ctrl, addr + 0x200c00 + (val & 0xff));
1581         awacs_burgundy_busy_wait();
1582         out_le32(&awacs->codec_ctrl, addr + 0x200d00 +((val>>8) & 0xff));
1583         awacs_burgundy_busy_wait();
1584         out_le32(&awacs->codec_ctrl, addr + 0x200e00 +((val>>16) & 0xff));
1585         awacs_burgundy_busy_wait();
1586         out_le32(&awacs->codec_ctrl, addr + 0x200f00 +((val>>24) & 0xff));
1587         awacs_burgundy_busy_wait();
1588 }
1589
1590 static unsigned
1591 awacs_burgundy_rcw(unsigned addr)
1592 {
1593         unsigned val = 0;
1594         unsigned long flags;
1595
1596         /* should have timeouts here */
1597         spin_lock_irqsave(&dmasound.lock, flags);
1598
1599         out_le32(&awacs->codec_ctrl, addr + 0x100000);
1600         awacs_burgundy_busy_wait();
1601         awacs_burgundy_extend_wait();
1602         val += (in_le32(&awacs->codec_stat) >> 4) & 0xff;
1603
1604         out_le32(&awacs->codec_ctrl, addr + 0x100100);
1605         awacs_burgundy_busy_wait();
1606         awacs_burgundy_extend_wait();
1607         val += ((in_le32(&awacs->codec_stat)>>4) & 0xff) <<8;
1608
1609         out_le32(&awacs->codec_ctrl, addr + 0x100200);
1610         awacs_burgundy_busy_wait();
1611         awacs_burgundy_extend_wait();
1612         val += ((in_le32(&awacs->codec_stat)>>4) & 0xff) <<16;
1613
1614         out_le32(&awacs->codec_ctrl, addr + 0x100300);
1615         awacs_burgundy_busy_wait();
1616         awacs_burgundy_extend_wait();
1617         val += ((in_le32(&awacs->codec_stat)>>4) & 0xff) <<24;
1618
1619         spin_unlock_irqrestore(&dmasound.lock, flags);
1620
1621         return val;
1622 }
1623
1624
1625 static void
1626 awacs_burgundy_wcb(unsigned addr, unsigned val)
1627 {
1628         out_le32(&awacs->codec_ctrl, addr + 0x300000 + (val & 0xff));
1629         awacs_burgundy_busy_wait();
1630 }
1631
1632 static unsigned
1633 awacs_burgundy_rcb(unsigned addr)
1634 {
1635         unsigned val = 0;
1636         unsigned long flags;
1637
1638         /* should have timeouts here */
1639         spin_lock_irqsave(&dmasound.lock, flags);
1640
1641         out_le32(&awacs->codec_ctrl, addr + 0x100000);
1642         awacs_burgundy_busy_wait();
1643         awacs_burgundy_extend_wait();
1644         val += (in_le32(&awacs->codec_stat) >> 4) & 0xff;
1645
1646         spin_unlock_irqrestore(&dmasound.lock, flags);
1647
1648         return val;
1649 }
1650
1651 static int
1652 awacs_burgundy_check(void)
1653 {
1654         /* Checks to see the chip is alive and kicking */
1655         int error = in_le32(&awacs->codec_ctrl) & MASK_ERRCODE;
1656
1657         return error == 0xf0000;
1658 }
1659
1660 static int
1661 awacs_burgundy_init(void)
1662 {
1663         if (awacs_burgundy_check()) {
1664                 printk(KERN_WARNING "dmasound_pmac: burgundy not working :-(\n");
1665                 return 1;
1666         }
1667
1668         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_OUTPUTENABLES,
1669                            DEF_BURGUNDY_OUTPUTENABLES);
1670         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES,
1671                            DEF_BURGUNDY_MORE_OUTPUTENABLES);
1672         awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_OUTPUTSELECTS,
1673                            DEF_BURGUNDY_OUTPUTSELECTS);
1674
1675         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_INPSEL21,
1676                            DEF_BURGUNDY_INPSEL21);
1677         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_INPSEL3,
1678                            DEF_BURGUNDY_INPSEL3);
1679         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_GAINCD,
1680                            DEF_BURGUNDY_GAINCD);
1681         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_GAINLINE,
1682                            DEF_BURGUNDY_GAINLINE);
1683         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_GAINMIC,
1684                            DEF_BURGUNDY_GAINMIC);
1685         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_GAINMODEM,
1686                            DEF_BURGUNDY_GAINMODEM);
1687
1688         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_ATTENSPEAKER,
1689                            DEF_BURGUNDY_ATTENSPEAKER);
1690         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_ATTENLINEOUT,
1691                            DEF_BURGUNDY_ATTENLINEOUT);
1692         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_ATTENHP,
1693                            DEF_BURGUNDY_ATTENHP);
1694
1695         awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_MASTER_VOLUME,
1696                            DEF_BURGUNDY_MASTER_VOLUME);
1697         awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_VOLCD,
1698                            DEF_BURGUNDY_VOLCD);
1699         awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_VOLLINE,
1700                            DEF_BURGUNDY_VOLLINE);
1701         awacs_burgundy_wcw(MASK_ADDR_BURGUNDY_VOLMIC,
1702                            DEF_BURGUNDY_VOLMIC);
1703         return 0;
1704 }
1705
1706 static void
1707 awacs_burgundy_write_volume(unsigned address, int volume)
1708 {
1709         int hardvolume,lvolume,rvolume;
1710
1711         lvolume = (volume & 0xff) ? (volume & 0xff) + 155 : 0;
1712         rvolume = ((volume >>8)&0xff) ? ((volume >> 8)&0xff ) + 155 : 0;
1713
1714         hardvolume = lvolume + (rvolume << 16);
1715
1716         awacs_burgundy_wcw(address, hardvolume);
1717 }
1718
1719 static int
1720 awacs_burgundy_read_volume(unsigned address)
1721 {
1722         int softvolume,wvolume;
1723
1724         wvolume = awacs_burgundy_rcw(address);
1725
1726         softvolume = (wvolume & 0xff) - 155;
1727         softvolume += (((wvolume >> 16) & 0xff) - 155)<<8;
1728
1729         return softvolume > 0 ? softvolume : 0;
1730 }
1731
1732 static int
1733 awacs_burgundy_read_mvolume(unsigned address)
1734 {
1735         int lvolume,rvolume,wvolume;
1736
1737         wvolume = awacs_burgundy_rcw(address);
1738
1739         wvolume &= 0xffff;
1740
1741         rvolume = (wvolume & 0xff) - 155;
1742         lvolume = ((wvolume & 0xff00)>>8) - 155;
1743
1744         return lvolume + (rvolume << 8);
1745 }
1746
1747 static void
1748 awacs_burgundy_write_mvolume(unsigned address, int volume)
1749 {
1750         int lvolume,rvolume,hardvolume;
1751
1752         lvolume = (volume &0xff) ? (volume & 0xff) + 155 :0;
1753         rvolume = ((volume >>8) & 0xff) ? (volume >> 8) + 155 :0;
1754
1755         hardvolume = lvolume + (rvolume << 8);
1756         hardvolume += (hardvolume << 16);
1757
1758         awacs_burgundy_wcw(address, hardvolume);
1759 }
1760
1761 /* End burgundy functions */
1762
1763 /* Set up output volumes on machines with the 'perch/whisper' extension card.
1764  * this has an SGS i2c chip (7433) which is accessed using the cuda.
1765  *
1766  * TODO: split this out and make use of the other parts of the SGS chip to
1767  * do Bass, Treble etc.
1768  */
1769
1770 static void
1771 awacs_enable_amp(int spkr_vol)
1772 {
1773 #ifdef CONFIG_ADB_CUDA
1774         struct adb_request req;
1775
1776         if (sys_ctrler != SYS_CTRLER_CUDA)
1777                 return;
1778
1779         /* turn on headphones */
1780         cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
1781                      0x8a, 4, 0);
1782         while (!req.complete) cuda_poll();
1783         cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
1784                      0x8a, 6, 0);
1785         while (!req.complete) cuda_poll();
1786
1787         /* turn on speaker */
1788         cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
1789                      0x8a, 3, (100 - (spkr_vol & 0xff)) * 32 / 100);
1790         while (!req.complete) cuda_poll();
1791         cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC,
1792                      0x8a, 5, (100 - ((spkr_vol >> 8) & 0xff)) * 32 / 100);
1793         while (!req.complete) cuda_poll();
1794
1795         cuda_request(&req, NULL, 5, CUDA_PACKET,
1796                      CUDA_GET_SET_IIC, 0x8a, 1, 0x29);
1797         while (!req.complete) cuda_poll();
1798 #endif /* CONFIG_ADB_CUDA */
1799 }
1800
1801
1802 /*** Mid level stuff *********************************************************/
1803
1804
1805 /*
1806  * /dev/mixer abstraction
1807  */
1808
1809 static void do_line_lev(int data)
1810 {
1811                 line_lev = data ;
1812                 awacs_reg[0] &= ~MASK_MUX_AUDIN;
1813                 if ((data & 0xff) >= 50)
1814                         awacs_reg[0] |= MASK_MUX_AUDIN;
1815                 awacs_write(MASK_ADDR0 | awacs_reg[0]);
1816 }
1817
1818 static void do_ip_gain(int data)
1819 {
1820         ip_gain = data ;
1821         data &= 0xff;
1822         awacs_reg[0] &= ~MASK_GAINLINE;
1823         if (awacs_revision == AWACS_SCREAMER) {
1824                 awacs_reg[6] &= ~MASK_MIC_BOOST ;
1825                 if (data >= 33) {
1826                         awacs_reg[0] |= MASK_GAINLINE;
1827                         if( data >= 66)
1828                                 awacs_reg[6] |= MASK_MIC_BOOST ;
1829                 }
1830                 awacs_write(MASK_ADDR6 | awacs_reg[6]) ;
1831         } else {
1832                 if (data >= 50)
1833                         awacs_reg[0] |= MASK_GAINLINE;
1834         }
1835         awacs_write(MASK_ADDR0 | awacs_reg[0]);
1836 }
1837
1838 static void do_mic_lev(int data)
1839 {
1840         mic_lev = data ;
1841         data &= 0xff;
1842         awacs_reg[0] &= ~MASK_MUX_MIC;
1843         if (data >= 50)
1844                 awacs_reg[0] |= MASK_MUX_MIC;
1845         awacs_write(MASK_ADDR0 | awacs_reg[0]);
1846 }
1847
1848 static void do_cd_lev(int data)
1849 {
1850         cd_lev = data ;
1851         awacs_reg[0] &= ~MASK_MUX_CD;
1852         if ((data & 0xff) >= 50)
1853                 awacs_reg[0] |= MASK_MUX_CD;
1854         awacs_write(MASK_ADDR0 | awacs_reg[0]);
1855 }
1856
1857 static void do_rec_lev(int data)
1858 {
1859         int left, right ;
1860         rec_lev = data ;
1861         /* need to fudge this to use the volume setter routine */
1862         left = 100 - (data & 0xff) ; if( left < 0 ) left = 0 ;
1863         right = 100 - ((data >> 8) & 0xff) ; if( right < 0 ) right = 0 ;
1864         left |= (right << 8 );
1865         left = awacs_volume_setter(left, 0, 0, 4);
1866 }
1867
1868 static void do_passthru_vol(int data)
1869 {
1870         passthru_vol = data ;
1871         awacs_reg[1] &= ~MASK_LOOPTHRU;
1872         if (awacs_revision == AWACS_SCREAMER) {
1873                 if( data ) { /* switch it on for non-zero */
1874                         awacs_reg[1] |= MASK_LOOPTHRU;
1875                         awacs_write(MASK_ADDR1 | awacs_reg[1]);
1876                 }
1877                 data = awacs_volume_setter(data, 5, 0, 6) ;
1878         } else {
1879                 if ((data & 0xff) >= 50)
1880                         awacs_reg[1] |= MASK_LOOPTHRU;
1881                 awacs_write(MASK_ADDR1 | awacs_reg[1]);
1882                 data = (awacs_reg[1] & MASK_LOOPTHRU)? 100: 0;
1883         }
1884 }
1885
1886 static int awacs_mixer_ioctl(u_int cmd, u_long arg)
1887 {
1888         int data;
1889         int rc;
1890
1891         switch (cmd) {
1892         case SOUND_MIXER_READ_CAPS:
1893                 /* say we will allow multiple inputs?  prob. wrong
1894                         so I'm switching it to single */
1895                 return IOCTL_OUT(arg, 1);
1896         case SOUND_MIXER_READ_DEVMASK:
1897                 data  = SOUND_MASK_VOLUME | SOUND_MASK_SPEAKER
1898                         | SOUND_MASK_LINE | SOUND_MASK_MIC | SOUND_MASK_CD
1899                         | SOUND_MASK_IGAIN | SOUND_MASK_RECLEV
1900                         | SOUND_MASK_ALTPCM
1901                         | SOUND_MASK_MONITOR;
1902                 rc = IOCTL_OUT(arg, data);
1903                 break;
1904         case SOUND_MIXER_READ_RECMASK:
1905                 data = SOUND_MASK_LINE | SOUND_MASK_MIC | SOUND_MASK_CD;
1906                 rc = IOCTL_OUT(arg, data);
1907                 break;
1908         case SOUND_MIXER_READ_RECSRC:
1909                 data = 0;
1910                 if (awacs_reg[0] & MASK_MUX_AUDIN)
1911                         data |= SOUND_MASK_LINE;
1912                 if (awacs_reg[0] & MASK_MUX_MIC)
1913                         data |= SOUND_MASK_MIC;
1914                 if (awacs_reg[0] & MASK_MUX_CD)
1915                         data |= SOUND_MASK_CD;
1916                 rc = IOCTL_OUT(arg, data);
1917                 break;
1918         case SOUND_MIXER_WRITE_RECSRC:
1919                 IOCTL_IN(arg, data);
1920                 data &= (SOUND_MASK_LINE | SOUND_MASK_MIC | SOUND_MASK_CD);
1921                 awacs_reg[0] &= ~(MASK_MUX_CD | MASK_MUX_MIC
1922                                   | MASK_MUX_AUDIN);
1923                 if (data & SOUND_MASK_LINE)
1924                         awacs_reg[0] |= MASK_MUX_AUDIN;
1925                 if (data & SOUND_MASK_MIC)
1926                         awacs_reg[0] |= MASK_MUX_MIC;
1927                 if (data & SOUND_MASK_CD)
1928                         awacs_reg[0] |= MASK_MUX_CD;
1929                 awacs_write(awacs_reg[0] | MASK_ADDR0);
1930                 rc = IOCTL_OUT(arg, data);
1931                 break;
1932         case SOUND_MIXER_READ_STEREODEVS:
1933                 data = SOUND_MASK_VOLUME | SOUND_MASK_SPEAKER| SOUND_MASK_RECLEV  ;
1934                 if (awacs_revision == AWACS_SCREAMER)
1935                         data |= SOUND_MASK_MONITOR ;
1936                 rc = IOCTL_OUT(arg, data);
1937                 break;
1938         case SOUND_MIXER_WRITE_VOLUME:
1939                 IOCTL_IN(arg, data);
1940                 line_vol = data ;
1941                 awacs_volume_setter(data, 2, 0, 6);
1942                 /* fall through */
1943         case SOUND_MIXER_READ_VOLUME:
1944                 rc = IOCTL_OUT(arg, line_vol);
1945                 break;
1946         case SOUND_MIXER_WRITE_SPEAKER:
1947                 IOCTL_IN(arg, data);
1948                 spk_vol = data ;
1949                 if (has_perch)
1950                         awacs_enable_amp(data);
1951                 else
1952                         (void)awacs_volume_setter(data, 4, MASK_CMUTE, 6);
1953                 /* fall though */
1954         case SOUND_MIXER_READ_SPEAKER:
1955                 rc = IOCTL_OUT(arg, spk_vol);
1956                 break;
1957         case SOUND_MIXER_WRITE_ALTPCM:  /* really bell volume */
1958                 IOCTL_IN(arg, data);
1959                 beep_vol = data & 0xff;
1960                 /* fall through */
1961         case SOUND_MIXER_READ_ALTPCM:
1962                 rc = IOCTL_OUT(arg, beep_vol);
1963                 break;
1964         case SOUND_MIXER_WRITE_LINE:
1965                 IOCTL_IN(arg, data);
1966                 do_line_lev(data) ;
1967                 /* fall through */
1968         case SOUND_MIXER_READ_LINE:
1969                 rc = IOCTL_OUT(arg, line_lev);
1970                 break;
1971         case SOUND_MIXER_WRITE_IGAIN:
1972                 IOCTL_IN(arg, data);
1973                 do_ip_gain(data) ;
1974                 /* fall through */
1975         case SOUND_MIXER_READ_IGAIN:
1976                 rc = IOCTL_OUT(arg, ip_gain);
1977                 break;
1978         case SOUND_MIXER_WRITE_MIC:
1979                 IOCTL_IN(arg, data);
1980                 do_mic_lev(data);
1981                 /* fall through */
1982         case SOUND_MIXER_READ_MIC:
1983                 rc = IOCTL_OUT(arg, mic_lev);
1984                 break;
1985         case SOUND_MIXER_WRITE_CD:
1986                 IOCTL_IN(arg, data);
1987                 do_cd_lev(data);
1988                 /* fall through */
1989         case SOUND_MIXER_READ_CD:
1990                 rc = IOCTL_OUT(arg, cd_lev);
1991                 break;
1992         case SOUND_MIXER_WRITE_RECLEV:
1993                 IOCTL_IN(arg, data);
1994                 do_rec_lev(data) ;
1995                 /* fall through */
1996         case SOUND_MIXER_READ_RECLEV:
1997                 rc = IOCTL_OUT(arg, rec_lev);
1998                 break;
1999         case MIXER_WRITE(SOUND_MIXER_MONITOR):
2000                 IOCTL_IN(arg, data);
2001                 do_passthru_vol(data) ;
2002                 /* fall through */
2003         case MIXER_READ(SOUND_MIXER_MONITOR):
2004                 rc = IOCTL_OUT(arg, passthru_vol);
2005                 break;
2006         default:
2007                 rc = -EINVAL;
2008         }
2009
2010         return rc;
2011 }
2012
2013 static void awacs_mixer_init(void)
2014 {
2015         awacs_volume_setter(line_vol, 2, 0, 6);
2016         if (has_perch)
2017                 awacs_enable_amp(spk_vol);
2018         else
2019                 (void)awacs_volume_setter(spk_vol, 4, MASK_CMUTE, 6);
2020         do_line_lev(line_lev) ;
2021         do_ip_gain(ip_gain) ;
2022         do_mic_lev(mic_lev) ;
2023         do_cd_lev(cd_lev) ;
2024         do_rec_lev(rec_lev) ;
2025         do_passthru_vol(passthru_vol) ;
2026 }
2027
2028 static int burgundy_mixer_ioctl(u_int cmd, u_long arg)
2029 {
2030         int data;
2031         int rc;
2032
2033         /* We are, we are, we are... Burgundy or better */
2034         switch(cmd) {
2035         case SOUND_MIXER_READ_DEVMASK:
2036                 data = SOUND_MASK_VOLUME | SOUND_MASK_CD |
2037                         SOUND_MASK_LINE | SOUND_MASK_MIC |
2038                         SOUND_MASK_SPEAKER | SOUND_MASK_ALTPCM;
2039                 rc = IOCTL_OUT(arg, data);
2040                 break;
2041         case SOUND_MIXER_READ_RECMASK:
2042                 data = SOUND_MASK_LINE | SOUND_MASK_MIC
2043                         | SOUND_MASK_CD;
2044                 rc = IOCTL_OUT(arg, data);
2045                 break;
2046         case SOUND_MIXER_READ_RECSRC:
2047                 data = 0;
2048                 if (awacs_reg[0] & MASK_MUX_AUDIN)
2049                         data |= SOUND_MASK_LINE;
2050                 if (awacs_reg[0] & MASK_MUX_MIC)
2051                         data |= SOUND_MASK_MIC;
2052                 if (awacs_reg[0] & MASK_MUX_CD)
2053                         data |= SOUND_MASK_CD;
2054                 rc = IOCTL_OUT(arg, data);
2055                 break;
2056         case SOUND_MIXER_WRITE_RECSRC:
2057                 IOCTL_IN(arg, data);
2058                 data &= (SOUND_MASK_LINE
2059                          | SOUND_MASK_MIC | SOUND_MASK_CD);
2060                 awacs_reg[0] &= ~(MASK_MUX_CD | MASK_MUX_MIC
2061                                   | MASK_MUX_AUDIN);
2062                 if (data & SOUND_MASK_LINE)
2063                         awacs_reg[0] |= MASK_MUX_AUDIN;
2064                 if (data & SOUND_MASK_MIC)
2065                         awacs_reg[0] |= MASK_MUX_MIC;
2066                 if (data & SOUND_MASK_CD)
2067                         awacs_reg[0] |= MASK_MUX_CD;
2068                 awacs_write(awacs_reg[0] | MASK_ADDR0);
2069                 rc = IOCTL_OUT(arg, data);
2070                 break;
2071         case SOUND_MIXER_READ_STEREODEVS:
2072                 data = SOUND_MASK_VOLUME | SOUND_MASK_SPEAKER
2073                         | SOUND_MASK_RECLEV | SOUND_MASK_CD
2074                         | SOUND_MASK_LINE;
2075                 rc = IOCTL_OUT(arg, data);
2076                 break;
2077         case SOUND_MIXER_READ_CAPS:
2078                 rc = IOCTL_OUT(arg, 0);
2079                 break;
2080         case SOUND_MIXER_WRITE_VOLUME:
2081                 IOCTL_IN(arg, data);
2082                 awacs_burgundy_write_mvolume(MASK_ADDR_BURGUNDY_MASTER_VOLUME, data);
2083                                 /* Fall through */
2084         case SOUND_MIXER_READ_VOLUME:
2085                 rc = IOCTL_OUT(arg, awacs_burgundy_read_mvolume(MASK_ADDR_BURGUNDY_MASTER_VOLUME));
2086                 break;
2087         case SOUND_MIXER_WRITE_SPEAKER:
2088                 IOCTL_IN(arg, data);
2089                 if (!(data & 0xff)) {
2090                         /* Mute the left speaker */
2091                         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES,
2092                                            awacs_burgundy_rcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES) & ~0x2);
2093                 } else {
2094                         /* Unmute the left speaker */
2095                         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES,
2096                                            awacs_burgundy_rcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES) | 0x2);
2097                 }
2098                 if (!(data & 0xff00)) {
2099                         /* Mute the right speaker */
2100                         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES,
2101                                            awacs_burgundy_rcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES) & ~0x4);
2102                 } else {
2103                         /* Unmute the right speaker */
2104                         awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES,
2105                                            awacs_burgundy_rcb(MASK_ADDR_BURGUNDY_MORE_OUTPUTENABLES) | 0x4);
2106                 }
2107
2108                 data = (((data&0xff)*16)/100 > 0xf ? 0xf :
2109                         (((data&0xff)*16)/100)) +
2110                         ((((data>>8)*16)/100 > 0xf ? 0xf :
2111                           ((((data>>8)*16)/100)))<<4);
2112
2113                 awacs_burgundy_wcb(MASK_ADDR_BURGUNDY_ATTENSPEAKER, ~data);
2114                                 /* Fall through */
2115         case SOUND_MIXER_READ_SPEAKER:
2116                 data = awacs_burgundy_rcb(MASK_ADDR_BURGUNDY_ATTENSPEAKER);
2117                 data = (((data & 0xf)*100)/16) + ((((data>>4)*100)/16)<<8);
2118                 rc = IOCTL_OUT(arg, (~data) & 0x0000ffff);
2119                 break;
2120         case SOUND_MIXER_WRITE_ALTPCM:  /* really bell volume */
2121                 IOCTL_IN(arg, data);
2122                 beep_vol = data & 0xff;
2123                                 /* fall through */
2124         case SOUND_MIXER_READ_ALTPCM:
2125                 rc = IOCTL_OUT(arg, beep_vol);
2126                 break;
2127         case SOUND_MIXER_WRITE_LINE:
2128                 IOCTL_IN(arg, data);
2129                 awacs_burgundy_write_volume(MASK_ADDR_BURGUNDY_VOLLINE, data);
2130
2131                                 /* fall through */
2132         case SOUND_MIXER_READ_LINE:
2133                 data = awacs_burgundy_read_volume(MASK_ADDR_BURGUNDY_VOLLINE);
2134                 rc = IOCTL_OUT(arg, data);
2135                 break;
2136         case SOUND_MIXER_WRITE_MIC:
2137                 IOCTL_IN(arg, data);
2138                                 /* Mic is mono device */
2139                 data = (data << 8) + (data << 24);
2140                 awacs_burgundy_write_volume(MASK_ADDR_BURGUNDY_VOLMIC, data);
2141                                 /* fall through */
2142         case SOUND_MIXER_READ_MIC:
2143                 data = awacs_burgundy_read_volume(MASK_ADDR_BURGUNDY_VOLMIC);
2144                 data <<= 24;
2145                 rc = IOCTL_OUT(arg, data);
2146                 break;
2147         case SOUND_MIXER_WRITE_CD:
2148                 IOCTL_IN(arg, data);
2149                 awacs_burgundy_write_volume(MASK_ADDR_BURGUNDY_VOLCD, data);
2150                                 /* fall through */
2151         case SOUND_MIXER_READ_CD:
2152                 data = awacs_burgundy_read_volume(MASK_ADDR_BURGUNDY_VOLCD);
2153                 rc = IOCTL_OUT(arg, data);
2154                 break;
2155         case SOUND_MIXER_WRITE_RECLEV:
2156                 IOCTL_IN(arg, data);
2157                 data = awacs_volume_setter(data, 0, 0, 4);
2158                 rc = IOCTL_OUT(arg, data);
2159                 break;
2160         case SOUND_MIXER_READ_RECLEV:
2161                 data = awacs_get_volume(awacs_reg[0], 4);
2162                 rc = IOCTL_OUT(arg, data);
2163                 break;
2164         case SOUND_MIXER_OUTMASK:
2165         case SOUND_MIXER_OUTSRC:
2166         default:
2167                 rc = -EINVAL;
2168         }
2169
2170         return rc;
2171 }
2172
2173 static int daca_mixer_ioctl(u_int cmd, u_long arg)
2174 {
2175         int data;
2176         int rc;
2177
2178         /* And the DACA's no genius either! */
2179
2180         switch(cmd) {
2181         case SOUND_MIXER_READ_DEVMASK:
2182                 data = SOUND_MASK_VOLUME;
2183                 rc = IOCTL_OUT(arg, data);
2184                 break;
2185         case SOUND_MIXER_READ_RECMASK:
2186                 data = 0;
2187                 rc = IOCTL_OUT(arg, data);
2188                 break;
2189         case SOUND_MIXER_READ_RECSRC:
2190                 data = 0;
2191                 rc = IOCTL_OUT(arg, data);
2192                 break;
2193         case SOUND_MIXER_WRITE_RECSRC:
2194                 IOCTL_IN(arg, data);
2195                 data =0;
2196                 rc = IOCTL_OUT(arg, data);
2197                 break;
2198         case SOUND_MIXER_READ_STEREODEVS:
2199                 data = SOUND_MASK_VOLUME;
2200                 rc = IOCTL_OUT(arg, data);
2201                 break;
2202         case SOUND_MIXER_READ_CAPS:
2203                 rc = IOCTL_OUT(arg, 0);
2204                 break;
2205         case SOUND_MIXER_WRITE_VOLUME:
2206                 IOCTL_IN(arg, data);
2207                 daca_set_volume(data, data);
2208                 /* Fall through */
2209         case SOUND_MIXER_READ_VOLUME:
2210                 daca_get_volume(& data, &data);
2211                 rc = IOCTL_OUT(arg, data);
2212                 break;
2213         case SOUND_MIXER_OUTMASK:
2214         case SOUND_MIXER_OUTSRC:
2215         default:
2216                 rc = -EINVAL;
2217         }
2218         return rc;
2219 }
2220
2221 static int PMacMixerIoctl(u_int cmd, u_long arg)
2222 {
2223         int rc;
2224
2225         /* Different IOCTLS for burgundy and, eventually, DACA & Tumbler */
2226
2227         TRY_LOCK();
2228
2229         switch (awacs_revision){
2230                 case AWACS_BURGUNDY:
2231                         rc = burgundy_mixer_ioctl(cmd, arg);
2232                         break ;
2233                 case AWACS_DACA:
2234                         rc = daca_mixer_ioctl(cmd, arg);
2235                         break;
2236                 case AWACS_TUMBLER:
2237                 case AWACS_SNAPPER:
2238                         rc = tas_mixer_ioctl(cmd, arg);
2239                         break ;
2240                 default: /* ;-)) */
2241                         rc = awacs_mixer_ioctl(cmd, arg);
2242         }
2243
2244         UNLOCK();
2245
2246         return rc;
2247 }
2248
2249 static void PMacMixerInit(void)
2250 {
2251         switch (awacs_revision) {
2252                 case AWACS_TUMBLER:
2253                   printk("AE-Init tumbler mixer\n");
2254                   break ;
2255                 case AWACS_SNAPPER:
2256                   printk("AE-Init snapper mixer\n");
2257                   break ;
2258                 case AWACS_DACA:
2259                 case AWACS_BURGUNDY:
2260                         break ; /* don't know yet */
2261                 case AWACS_AWACS:
2262                 case AWACS_SCREAMER:
2263                 default:
2264                         awacs_mixer_init() ;
2265                         break ;
2266         }
2267 }
2268
2269 /* Write/Read sq setup functions:
2270    Check to see if we have enough (or any) dbdma cmd buffers for the
2271    user's fragment settings.  If not, allocate some. If this fails we will
2272    point at the beep buffer - as an emergency provision - to stop dma tromping
2273    on some random bit of memory (if someone lets it go anyway).
2274    The command buffers are then set up to point to the fragment buffers
2275    (allocated elsewhere).  We need n+1 commands the last of which holds
2276    a NOP + loop to start.
2277 */
2278
2279 static int PMacWriteSqSetup(void)
2280 {
2281         int i, count = 600 ;
2282         volatile struct dbdma_cmd *cp;
2283
2284         LOCK();
2285
2286         /* stop the controller from doing any output - if it isn't already.
2287            it _should_ be before this is called anyway */
2288
2289         out_le32(&awacs_txdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
2290         while ((in_le32(&awacs_txdma->status) & RUN) && count--)
2291                 udelay(1);
2292 #ifdef DEBUG_DMASOUND
2293 if (count <= 0)
2294         printk("dmasound_pmac: write sq setup: timeout waiting for dma to stop\n");
2295 #endif
2296
2297         if ((write_sq.max_count + 1) > number_of_tx_cmd_buffers) {
2298                 kfree(awacs_tx_cmd_space);
2299                 number_of_tx_cmd_buffers = 0;
2300
2301                 /* we need nbufs + 1 (for the loop) and we should request + 1
2302                    again because the DBDMA_ALIGN might pull the start up by up
2303                    to sizeof(struct dbdma_cmd) - 4.
2304                 */
2305
2306                 awacs_tx_cmd_space = kmalloc
2307                         ((write_sq.max_count + 1 + 1) * sizeof(struct dbdma_cmd),
2308                          GFP_KERNEL);
2309                 if (awacs_tx_cmd_space == NULL) {
2310                         /* don't leave it dangling - nasty but better than a
2311                            random address */
2312                         out_le32(&awacs_txdma->cmdptr, virt_to_bus(beep_dbdma_cmd));
2313                         printk(KERN_ERR
2314                            "dmasound_pmac: can't allocate dbdma cmd buffers"
2315                            ", driver disabled\n");
2316                         UNLOCK();
2317                         return -ENOMEM;
2318                 }
2319                 awacs_tx_cmds = (volatile struct dbdma_cmd *)
2320                         DBDMA_ALIGN(awacs_tx_cmd_space);
2321                 number_of_tx_cmd_buffers = write_sq.max_count + 1;
2322         }
2323
2324         cp = awacs_tx_cmds;
2325         memset((void *)cp, 0, (write_sq.max_count+1) * sizeof(struct dbdma_cmd));
2326         for (i = 0; i < write_sq.max_count; ++i, ++cp) {
2327                 st_le32(&cp->phy_addr, virt_to_bus(write_sq.buffers[i]));
2328         }
2329         st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
2330         st_le32(&cp->cmd_dep, virt_to_bus(awacs_tx_cmds));
2331         /* point the controller at the command stack - ready to go */
2332         out_le32(&awacs_txdma->cmdptr, virt_to_bus(awacs_tx_cmds));
2333         UNLOCK();
2334         return 0;
2335 }
2336
2337 static int PMacReadSqSetup(void)
2338 {
2339         int i, count = 600;
2340         volatile struct dbdma_cmd *cp;
2341
2342         LOCK();
2343
2344         /* stop the controller from doing any input - if it isn't already.
2345            it _should_ be before this is called anyway */
2346
2347         out_le32(&awacs_rxdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
2348         while ((in_le32(&awacs_rxdma->status) & RUN) && count--)
2349                 udelay(1);
2350 #ifdef DEBUG_DMASOUND
2351 if (count <= 0)
2352         printk("dmasound_pmac: read sq setup: timeout waiting for dma to stop\n");
2353 #endif
2354
2355         if ((read_sq.max_count+1) > number_of_rx_cmd_buffers ) {
2356                 kfree(awacs_rx_cmd_space);
2357                 number_of_rx_cmd_buffers = 0;
2358
2359                 /* we need nbufs + 1 (for the loop) and we should request + 1 again
2360                    because the DBDMA_ALIGN might pull the start up by up to
2361                    sizeof(struct dbdma_cmd) - 4 (assuming kmalloc aligns 32 bits).
2362                 */
2363
2364                 awacs_rx_cmd_space = kmalloc
2365                         ((read_sq.max_count + 1 + 1) * sizeof(struct dbdma_cmd),
2366                          GFP_KERNEL);
2367                 if (awacs_rx_cmd_space == NULL) {
2368                         /* don't leave it dangling - nasty but better than a
2369                            random address */
2370                         out_le32(&awacs_rxdma->cmdptr, virt_to_bus(beep_dbdma_cmd));
2371                         printk(KERN_ERR
2372                            "dmasound_pmac: can't allocate dbdma cmd buffers"
2373                            ", driver disabled\n");
2374                         UNLOCK();
2375                         return -ENOMEM;
2376                 }
2377                 awacs_rx_cmds = (volatile struct dbdma_cmd *)
2378                         DBDMA_ALIGN(awacs_rx_cmd_space);
2379                 number_of_rx_cmd_buffers = read_sq.max_count + 1 ;
2380         }
2381         cp = awacs_rx_cmds;
2382         memset((void *)cp, 0, (read_sq.max_count+1) * sizeof(struct dbdma_cmd));
2383
2384         /* Set dma buffers up in a loop */
2385         for (i = 0; i < read_sq.max_count; i++,cp++) {
2386                 st_le32(&cp->phy_addr, virt_to_bus(read_sq.buffers[i]));
2387                 st_le16(&cp->command, INPUT_MORE + INTR_ALWAYS);
2388                 st_le16(&cp->req_count, read_sq.block_size);
2389                 st_le16(&cp->xfer_status, 0);
2390         }
2391
2392         /* The next two lines make the thing loop around.
2393         */
2394         st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS);
2395         st_le32(&cp->cmd_dep, virt_to_bus(awacs_rx_cmds));
2396         /* point the controller at the command stack - ready to go */
2397         out_le32(&awacs_rxdma->cmdptr, virt_to_bus(awacs_rx_cmds));
2398
2399         UNLOCK();
2400         return 0;
2401 }
2402
2403 /* TODO: this needs work to guarantee that when it returns DMA has stopped
2404    but in a more elegant way than is done here....
2405 */
2406
2407 static void PMacAbortRead(void)
2408 {
2409         int i;
2410         volatile struct dbdma_cmd *cp;
2411
2412         LOCK();
2413         /* give it a chance to update the output and provide the IRQ
2414            that is expected.
2415         */
2416
2417         out_le32(&awacs_rxdma->control, ((FLUSH) << 16) + FLUSH );
2418
2419         cp = awacs_rx_cmds;
2420         for (i = 0; i < read_sq.max_count; i++,cp++)
2421                 st_le16(&cp->command, DBDMA_STOP);
2422         /*
2423          * We should probably wait for the thing to stop before we
2424          * release the memory.
2425          */
2426
2427         msleep(100) ; /* give it a (small) chance to act */
2428
2429         /* apply the sledgehammer approach - just stop it now */
2430
2431         out_le32(&awacs_rxdma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);
2432         UNLOCK();
2433 }
2434
2435 extern char *get_afmt_string(int);
2436 static int PMacStateInfo(char *b, size_t sp)
2437 {
2438         int i, len = 0;
2439         len = sprintf(b,"HW rates: ");
2440         switch (awacs_revision){
2441                 case AWACS_DACA:
2442                 case AWACS_BURGUNDY:
2443                         len += sprintf(b,"44100 ") ;
2444                         break ;
2445                 case AWACS_TUMBLER:
2446                 case AWACS_SNAPPER:
2447                         for (i=0; i<1; i++){
2448                                 if (tas_freqs_ok[i])
2449                                         len += sprintf(b+len,"%d ", tas_freqs[i]) ;
2450                         }
2451                         break ;
2452                 case AWACS_AWACS:
2453                 case AWACS_SCREAMER:
2454                 default:
2455                         for (i=0; i<8; i++){
2456                                 if (awacs_freqs_ok[i])
2457                                         len += sprintf(b+len,"%d ", awacs_freqs[i]) ;
2458                         }
2459                         break ;
2460         }
2461         len += sprintf(b+len,"s/sec\n") ;
2462         if (len < sp) {
2463                 len += sprintf(b+len,"HW AFMTS: ");
2464                 i = AFMT_U16_BE ;
2465                 while (i) {
2466                         if (i & dmasound.mach.hardware_afmts)
2467                                 len += sprintf(b+len,"%s ",
2468                                         get_afmt_string(i & dmasound.mach.hardware_afmts));
2469                         i >>= 1 ;
2470                 }
2471                 len += sprintf(b+len,"\n") ;
2472         }
2473         return len ;
2474 }
2475
2476 /*** Machine definitions *****************************************************/
2477
2478 static SETTINGS def_hard = {
2479         .format = AFMT_S16_BE,
2480         .stereo = 1,
2481         .size   = 16,
2482         .speed  = 44100
2483 } ;
2484
2485 static SETTINGS def_soft = {
2486         .format = AFMT_S16_BE,
2487         .stereo = 1,
2488         .size   = 16,
2489         .speed  = 44100
2490 } ;
2491
2492 static MACHINE machPMac = {
2493         .name           = awacs_name,
2494         .name2          = "PowerMac Built-in Sound",
2495         .owner          = THIS_MODULE,
2496         .dma_alloc      = PMacAlloc,
2497         .dma_free       = PMacFree,
2498         .irqinit        = PMacIrqInit,
2499 #ifdef MODULE
2500         .irqcleanup     = PMacIrqCleanup,
2501 #endif /* MODULE */
2502         .init           = PMacInit,
2503         .silence        = PMacSilence,
2504         .setFormat      = PMacSetFormat,
2505         .setVolume      = PMacSetVolume,
2506         .play           = PMacPlay,
2507         .record         = NULL,         /* default to no record */
2508         .mixer_init     = PMacMixerInit,
2509         .mixer_ioctl    = PMacMixerIoctl,
2510         .write_sq_setup = PMacWriteSqSetup,
2511         .read_sq_setup  = PMacReadSqSetup,
2512         .state_info     = PMacStateInfo,
2513         .abort_read     = PMacAbortRead,
2514         .min_dsp_speed  = 7350,
2515         .max_dsp_speed  = 44100,
2516         .version        = ((DMASOUND_AWACS_REVISION<<8) + DMASOUND_AWACS_EDITION)
2517 };
2518
2519
2520 /*** Config & Setup **********************************************************/
2521
2522 /* Check for pmac models that we care about in terms of special actions.
2523 */
2524
2525 void __init
2526 set_model(void)
2527 {
2528         /* portables/lap-tops */
2529
2530         if (machine_is_compatible("AAPL,3400/2400") ||
2531             machine_is_compatible("AAPL,3500")) {
2532                 is_pbook_3X00 = 1 ;
2533         }
2534         if (machine_is_compatible("PowerBook1,1")  || /* lombard */
2535             machine_is_compatible("AAPL,PowerBook1998")){ /* wallstreet */
2536                 is_pbook_g3 = 1 ;
2537                 return ;
2538         }
2539 }
2540
2541 /* Get the OF node that tells us about the registers, interrupts etc. to use
2542    for sound IO.
2543
2544    On most machines the sound IO OF node is the 'davbus' node.  On newer pmacs
2545    with DACA (& Tumbler) the node to use is i2s-a.  On much older machines i.e.
2546    before 9500 there is no davbus node and we have to use the 'awacs' property.
2547
2548   In the latter case we signal this by setting the codec value - so that the
2549   code that looks for chip properties knows how to go about it.
2550 */
2551
2552 static struct device_node* __init
2553 get_snd_io_node(void)
2554 {
2555         struct device_node *np = NULL;
2556
2557         /* set up awacs_node for early OF which doesn't have a full set of
2558          * properties on davbus
2559         */
2560
2561         awacs_node = find_devices("awacs");
2562         if (awacs_node)
2563                 awacs_revision = AWACS_AWACS;
2564
2565         /* powermac models after 9500 (other than those which use DACA or
2566          * Tumbler) have a node called "davbus".
2567          */
2568         np = find_devices("davbus");
2569         /*
2570          * if we didn't find a davbus device, try 'i2s-a' since
2571          * this seems to be what iBooks (& Tumbler) have.
2572          */
2573         if (np == NULL)
2574                 np = i2s_node = find_devices("i2s-a");
2575
2576         /* if we didn't find this - perhaps we are on an early model
2577          * which _only_ has an 'awacs' node
2578         */
2579         if (np == NULL && awacs_node)
2580                 np = awacs_node ;
2581
2582         /* if we failed all these return null - this will cause the
2583          * driver to give up...
2584         */
2585         return np ;
2586 }
2587
2588 /* Get the OF node that contains the info about the sound chip, inputs s-rates
2589    etc.
2590    This node does not exist (or contains much reduced info) on earlier machines
2591    we have to deduce the info other ways for these.
2592 */
2593
2594 static struct device_node* __init
2595 get_snd_info_node(struct device_node *io)
2596 {
2597         struct device_node *info;
2598
2599         info = find_devices("sound");
2600         while (info && info->parent != io)
2601                 info = info->next;
2602         return info;
2603 }
2604
2605 /* Find out what type of codec we have.
2606 */
2607
2608 static int __init
2609 get_codec_type(struct device_node *info)
2610 {
2611         /* already set if pre-davbus model and info will be NULL */
2612         int codec = awacs_revision ;
2613
2614         if (info) {
2615                 /* must do awacs first to allow screamer to overide it */
2616                 if (device_is_compatible(info, "awacs"))
2617                         codec = AWACS_AWACS ;
2618                 if (device_is_compatible(info, "screamer"))
2619                         codec = AWACS_SCREAMER;
2620                 if (device_is_compatible(info, "burgundy"))
2621                         codec = AWACS_BURGUNDY ;
2622                 if (device_is_compatible(info, "daca"))
2623                         codec = AWACS_DACA;
2624                 if (device_is_compatible(info, "tumbler"))
2625                         codec = AWACS_TUMBLER;
2626                 if (device_is_compatible(info, "snapper"))
2627                         codec = AWACS_SNAPPER;
2628         }
2629         return codec ;
2630 }
2631
2632 /* find out what type, if any, of expansion card we have
2633 */
2634 static void __init
2635 get_expansion_type(void)
2636 {
2637         if (find_devices("perch") != NULL)
2638                 has_perch = 1;
2639
2640         if (find_devices("pb-ziva-pc") != NULL)
2641                 has_ziva = 1;
2642         /* need to work out how we deal with iMac SRS module */
2643 }
2644
2645 /* set up frame rates.
2646  * I suspect that these routines don't quite go about it the right way:
2647  * - where there is more than one rate - I think that the first property
2648  * value is the number of rates.
2649  * TODO: check some more device trees and modify accordingly
2650  *       Set dmasound.mach.max_dsp_rate on the basis of these routines.
2651 */
2652
2653 static void __init
2654 awacs_init_frame_rates(unsigned int *prop, unsigned int l)
2655 {
2656         int i ;
2657         if (prop) {
2658                 for (i=0; i<8; i++)
2659                         awacs_freqs_ok[i] = 0 ;
2660                 for (l /= sizeof(int); l > 0; --l) {
2661                         unsigned int r = *prop++;
2662                         /* Apple 'Fixed' format */
2663                         if (r >= 0x10000)
2664                                 r >>= 16;
2665                         for (i = 0; i < 8; ++i) {
2666                                 if (r == awacs_freqs[i]) {
2667                                         awacs_freqs_ok[i] = 1;
2668                                         break;
2669                                 }
2670                         }
2671                 }
2672         }
2673         /* else we assume that all the rates are available */
2674 }
2675
2676 static void __init
2677 burgundy_init_frame_rates(unsigned int *prop, unsigned int l)
2678 {
2679         int temp[9] ;
2680         int i = 0 ;
2681         if (prop) {
2682                 for (l /= sizeof(int); l > 0; --l) {
2683                         unsigned int r = *prop++;
2684                         /* Apple 'Fixed' format */
2685                         if (r >= 0x10000)
2686                                 r >>= 16;
2687                         temp[i] = r ;
2688                         i++ ; if(i>=9) i=8;
2689                 }
2690         }
2691 #ifdef DEBUG_DMASOUND
2692 if (i > 1){
2693         int j;
2694         printk("dmasound_pmac: burgundy with multiple frame rates\n");
2695         for(j=0; j<i; j++)
2696                 printk("%d ", temp[j]) ;
2697         printk("\n") ;
2698 }
2699 #endif
2700 }
2701
2702 static void __init
2703 daca_init_frame_rates(unsigned int *prop, unsigned int l)
2704 {
2705         int temp[9] ;
2706         int i = 0 ;
2707         if (prop) {
2708                 for (l /= sizeof(int); l > 0; --l) {
2709                         unsigned int r = *prop++;
2710                         /* Apple 'Fixed' format */
2711                         if (r >= 0x10000)
2712                                 r >>= 16;
2713                         temp[i] = r ;
2714                         i++ ; if(i>=9) i=8;
2715
2716                 }
2717         }
2718 #ifdef DEBUG_DMASOUND
2719 if (i > 1){
2720         int j;
2721         printk("dmasound_pmac: DACA with multiple frame rates\n");
2722         for(j=0; j<i; j++)
2723                 printk("%d ", temp[j]) ;
2724         printk("\n") ;
2725 }
2726 #endif
2727 }
2728
2729 static void __init
2730 init_frame_rates(unsigned int *prop, unsigned int l)
2731 {
2732         switch (awacs_revision) {
2733                 case AWACS_TUMBLER:
2734                 case AWACS_SNAPPER:
2735                         tas_init_frame_rates(prop, l);
2736                         break ;
2737                 case AWACS_DACA:
2738                         daca_init_frame_rates(prop, l);
2739                         break ;
2740                 case AWACS_BURGUNDY:
2741                         burgundy_init_frame_rates(prop, l);
2742                         break ;
2743                 default:
2744                         awacs_init_frame_rates(prop, l);
2745                         break ;
2746         }
2747 }
2748
2749 /* find things/machines that can't do mac-io byteswap
2750 */
2751
2752 static void __init
2753 set_hw_byteswap(struct device_node *io)
2754 {
2755         struct device_node *mio ;
2756         unsigned int kl = 0 ;
2757
2758         /* if seems that Keylargo can't byte-swap  */
2759
2760         for (mio = io->parent; mio ; mio = mio->parent) {
2761                 if (strcmp(mio->name, "mac-io") == 0) {
2762                         if (device_is_compatible(mio, "Keylargo"))
2763                                 kl = 1;
2764                         break;
2765                 }
2766         }
2767         hw_can_byteswap = !kl;
2768 }
2769
2770 /* Allocate the resources necessary for beep generation.  This cannot be (quite)
2771    done statically (yet) because we cannot do virt_to_bus() on static vars when
2772    the code is loaded as a module.
2773
2774    for the sake of saving the possibility that two allocations will incur the
2775    overhead of two pull-ups in DBDMA_ALIGN() we allocate the 'emergency' dmdma
2776    command here as well... even tho' it is not part of the beep process.
2777 */
2778
2779 int32_t
2780 __init setup_beep(void)
2781 {
2782         /* Initialize beep stuff */
2783         /* want one cmd buffer for beeps, and a second one for emergencies
2784            - i.e. dbdma error conditions.
2785            ask for three to allow for pull up in DBDMA_ALIGN().
2786         */
2787         beep_dbdma_cmd_space =
2788                 kmalloc((2 + 1) * sizeof(struct dbdma_cmd), GFP_KERNEL);
2789         if(beep_dbdma_cmd_space == NULL) {
2790                 printk(KERN_ERR "dmasound_pmac: no beep dbdma cmd space\n") ;
2791                 return -ENOMEM ;
2792         }
2793         beep_dbdma_cmd = (volatile struct dbdma_cmd *)
2794                         DBDMA_ALIGN(beep_dbdma_cmd_space);
2795         /* set up emergency dbdma cmd */
2796         emergency_dbdma_cmd = beep_dbdma_cmd+1 ;
2797         beep_buf = kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL);
2798         if (beep_buf == NULL) {
2799                 printk(KERN_ERR "dmasound_pmac: no memory for beep buffer\n");
2800                 kfree(beep_dbdma_cmd_space) ;
2801                 return -ENOMEM ;
2802         }
2803         return 0 ;
2804 }
2805
2806 static struct input_dev *awacs_beep_dev;
2807
2808 int __init dmasound_awacs_init(void)
2809 {
2810         struct device_node *io = NULL, *info = NULL;
2811         int vol, res;
2812
2813         if (!machine_is(powermac))
2814                 return -ENODEV;
2815
2816         awacs_subframe = 0;
2817         awacs_revision = 0;
2818         hw_can_byteswap = 1 ; /* most can */
2819
2820         /* look for models we need to handle specially */
2821         set_model() ;
2822
2823         /* find the OF node that tells us about the dbdma stuff
2824         */
2825         io = get_snd_io_node();
2826         if (io == NULL) {
2827 #ifdef DEBUG_DMASOUND
2828 printk("dmasound_pmac: couldn't find sound io OF node\n");
2829 #endif
2830                 return -ENODEV ;
2831         }
2832
2833         /* find the OF node that tells us about the sound sub-system
2834          * this doesn't exist on pre-davbus machines (earlier than 9500)
2835         */
2836         if (awacs_revision != AWACS_AWACS) { /* set for pre-davbus */
2837                 info = get_snd_info_node(io) ;
2838                 if (info == NULL){
2839 #ifdef DEBUG_DMASOUND
2840 printk("dmasound_pmac: couldn't find 'sound' OF node\n");
2841 #endif
2842                         return -ENODEV ;
2843                 }
2844         }
2845
2846         awacs_revision = get_codec_type(info) ;
2847         if (awacs_revision == 0) {
2848 #ifdef DEBUG_DMASOUND
2849 printk("dmasound_pmac: couldn't find a Codec we can handle\n");
2850 #endif
2851                 return -ENODEV ; /* we don't know this type of h/w */
2852         }
2853
2854         /* set up perch, ziva, SRS or whatever else we have as sound
2855          *  expansion.
2856         */
2857         get_expansion_type();
2858
2859         /* we've now got enough information to make up the audio topology.
2860          * we will map the sound part of mac-io now so that we can probe for
2861          * other info if necessary (early AWACS we want to read chip ids)
2862          */
2863
2864         if (of_get_address(io, 2, NULL, NULL) == NULL) {
2865                 /* OK - maybe we need to use the 'awacs' node (on earlier
2866                  * machines).
2867                  */
2868                 if (awacs_node) {
2869                         io = awacs_node ;
2870                         if (of_get_address(io, 2, NULL, NULL) == NULL) {
2871                                 printk("dmasound_pmac: can't use %s\n",
2872                                        io->full_name);
2873                                 return -ENODEV;
2874                         }
2875                 } else
2876                         printk("dmasound_pmac: can't use %s\n", io->full_name);
2877         }
2878
2879         if (of_address_to_resource(io, 0, &awacs_rsrc[0]) ||
2880             request_mem_region(awacs_rsrc[0].start,
2881                                awacs_rsrc[0].end - awacs_rsrc[0].start + 1,
2882                                " (IO)") == NULL) {
2883                 printk(KERN_ERR "dmasound: can't request IO resource !\n");
2884                 return -ENODEV;
2885         }
2886         if (of_address_to_resource(io, 1, &awacs_rsrc[1]) ||
2887             request_mem_region(awacs_rsrc[1].start,
2888                                awacs_rsrc[1].end - awacs_rsrc[1].start + 1,
2889                                " (tx dma)") == NULL) {
2890                 release_mem_region(awacs_rsrc[0].start,
2891                                    awacs_rsrc[0].end - awacs_rsrc[0].start + 1);
2892                 printk(KERN_ERR "dmasound: can't request Tx DMA resource !\n");
2893                 return -ENODEV;
2894         }
2895         if (of_address_to_resource(io, 2, &awacs_rsrc[2]) ||
2896             request_mem_region(awacs_rsrc[2].start,
2897                                awacs_rsrc[2].end - awacs_rsrc[2].start + 1,
2898                                " (rx dma)") == NULL) {
2899                 release_mem_region(awacs_rsrc[0].start,
2900                                    awacs_rsrc[0].end - awacs_rsrc[0].start + 1);
2901                 release_mem_region(awacs_rsrc[1].start,
2902                                    awacs_rsrc[1].end - awacs_rsrc[1].start + 1);
2903                 printk(KERN_ERR "dmasound: can't request Rx DMA resource !\n");
2904                 return -ENODEV;
2905         }
2906
2907         awacs_beep_dev = input_allocate_device();
2908         if (!awacs_beep_dev) {
2909                 release_mem_region(awacs_rsrc[0].start,
2910                                    awacs_rsrc[0].end - awacs_rsrc[0].start + 1);
2911                 release_mem_region(awacs_rsrc[1].start,
2912                                    awacs_rsrc[1].end - awacs_rsrc[1].start + 1);
2913                 release_mem_region(awacs_rsrc[2].start,
2914                                    awacs_rsrc[2].end - awacs_rsrc[2].start + 1);
2915                 printk(KERN_ERR "dmasound: can't allocate input device !\n");
2916                 return -ENOMEM;
2917         }
2918
2919         awacs_beep_dev->name = "dmasound beeper";
2920         awacs_beep_dev->phys = "macio/input0";
2921         awacs_beep_dev->id.bustype = BUS_HOST;
2922         awacs_beep_dev->event = awacs_beep_event;
2923         awacs_beep_dev->sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
2924         awacs_beep_dev->evbit[0] = BIT(EV_SND);
2925
2926         /* all OF versions I've seen use this value */
2927         if (i2s_node)
2928                 i2s = ioremap(awacs_rsrc[0].start, 0x1000);
2929         else
2930                 awacs = ioremap(awacs_rsrc[0].start, 0x1000);
2931         awacs_txdma = ioremap(awacs_rsrc[1].start, 0x100);
2932         awacs_rxdma = ioremap(awacs_rsrc[2].start, 0x100);
2933
2934         /* first of all make sure that the chip is powered up....*/
2935         pmac_call_feature(PMAC_FTR_SOUND_CHIP_ENABLE, io, 0, 1);
2936         if (awacs_revision == AWACS_SCREAMER && awacs)
2937                 awacs_recalibrate();
2938
2939         awacs_irq = irq_of_parse_and_map(io, 0);
2940         awacs_tx_irq = irq_of_parse_and_map(io, 1);
2941         awacs_rx_irq = irq_of_parse_and_map(io, 2);
2942
2943         /* Hack for legacy crap that will be killed someday */
2944         awacs_node = io;
2945
2946         /* if we have an awacs or screamer - probe the chip to make
2947          * sure we have the right revision.
2948         */
2949
2950         if (awacs_revision <= AWACS_SCREAMER){
2951                 uint32_t temp, rev, mfg ;
2952                 /* find out the awacs revision from the chip */
2953                 temp = in_le32(&awacs->codec_stat);
2954                 rev = (temp >> 12) & 0xf;
2955                 mfg = (temp >>  8) & 0xf;
2956 #ifdef DEBUG_DMASOUND
2957 printk("dmasound_pmac: Awacs/Screamer Codec Mfct: %d Rev %d\n", mfg, rev);
2958 #endif
2959                 if (rev >= AWACS_SCREAMER)
2960                         awacs_revision = AWACS_SCREAMER ;
2961                 else
2962                         awacs_revision = rev ;
2963         }
2964
2965         dmasound.mach = machPMac;
2966
2967         /* find out other bits & pieces from OF, these may be present
2968            only on some models ... so be careful.
2969         */
2970
2971         /* in the absence of a frame rates property we will use the defaults
2972         */
2973
2974         if (info) {
2975                 unsigned int *prop, l;
2976
2977                 sound_device_id = 0;
2978                 /* device ID appears post g3 b&w */
2979                 prop = (unsigned int *)get_property(info, "device-id", NULL);
2980                 if (prop != 0)
2981                         sound_device_id = *prop;
2982
2983                 /* look for a property saying what sample rates
2984                    are available */
2985
2986                 prop = (unsigned int *)get_property(info, "sample-rates", &l);
2987                 if (prop == 0)
2988                         prop = (unsigned int *) get_property
2989                                 (info, "output-frame-rates", &l);
2990
2991                 /* if it's there use it to set up frame rates */
2992                 init_frame_rates(prop, l) ;
2993         }
2994
2995         if (awacs)
2996                 out_le32(&awacs->control, 0x11); /* set everything quiesent */
2997
2998         set_hw_byteswap(io) ; /* figure out if the h/w can do it */
2999
3000 #ifdef CONFIG_NVRAM
3001         /* get default volume from nvram */
3002         vol = ((pmac_xpram_read( 8 ) & 7 ) << 1 );
3003 #else
3004         vol = 0;
3005 #endif
3006
3007         /* set up tracking values */
3008         spk_vol = vol * 100 ;
3009         spk_vol /= 7 ; /* get set value to a percentage */
3010         spk_vol |= (spk_vol << 8) ; /* equal left & right */
3011         line_vol = passthru_vol = spk_vol ;
3012
3013         /* fill regs that are shared between AWACS & Burgundy */
3014
3015         awacs_reg[2] = vol + (vol << 6);
3016         awacs_reg[4] = vol + (vol << 6);
3017         awacs_reg[5] = vol + (vol << 6); /* screamer has loopthru vol control */
3018         awacs_reg[6] = 0; /* maybe should be vol << 3 for PCMCIA speaker */
3019         awacs_reg[7] = 0;
3020
3021         awacs_reg[0] = MASK_MUX_CD;
3022         awacs_reg[1] = MASK_LOOPTHRU;
3023
3024         /* FIXME: Only machines with external SRS module need MASK_PAROUT */
3025         if (has_perch || sound_device_id == 0x5
3026             || /*sound_device_id == 0x8 ||*/ sound_device_id == 0xb)
3027                 awacs_reg[1] |= MASK_PAROUT0 | MASK_PAROUT1;
3028
3029         switch (awacs_revision) {
3030                 case AWACS_TUMBLER:
3031                         tas_register_driver(&tas3001c_hooks);
3032                         tas_init(I2C_DRIVERID_TAS3001C, I2C_DRIVERNAME_TAS3001C);
3033                         tas_dmasound_init();
3034                         tas_post_init();
3035                         break ;
3036                 case AWACS_SNAPPER:
3037                         tas_register_driver(&tas3004_hooks);
3038                         tas_init(I2C_DRIVERID_TAS3004,I2C_DRIVERNAME_TAS3004);
3039                         tas_dmasound_init();
3040                         tas_post_init();
3041                         break;
3042                 case AWACS_DACA:
3043                         daca_init();
3044                         break;
3045                 case AWACS_BURGUNDY:
3046                         awacs_burgundy_init();
3047                         break ;
3048                 case AWACS_SCREAMER:
3049                 case AWACS_AWACS:
3050                 default:
3051                         load_awacs();
3052                         break ;
3053         }
3054
3055         /* enable/set-up external modules - when we know how */
3056
3057         if (has_perch)
3058                 awacs_enable_amp(100 * 0x101);
3059
3060         /* Reset dbdma channels */
3061         out_le32(&awacs_txdma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
3062         while (in_le32(&awacs_txdma->status) & RUN)
3063                 udelay(1);
3064         out_le32(&awacs_rxdma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16);
3065         while (in_le32(&awacs_rxdma->status) & RUN)
3066                 udelay(1);
3067
3068         /* Initialize beep stuff */
3069         if ((res=setup_beep()))
3070                 return res ;
3071
3072 #ifdef CONFIG_PM
3073         pmu_register_sleep_notifier(&awacs_sleep_notifier);
3074 #endif /* CONFIG_PM */
3075
3076         /* Powerbooks have odd ways of enabling inputs such as
3077            an expansion-bay CD or sound from an internal modem
3078            or a PC-card modem. */
3079         if (is_pbook_3X00) {
3080                 /*
3081                  * Enable CD and PC-card sound inputs.
3082                  * This is done by reading from address
3083                  * f301a000, + 0x10 to enable the expansion-bay
3084                  * CD sound input, + 0x80 to enable the PC-card
3085                  * sound input.  The 0x100 enables the SCSI bus
3086                  * terminator power.
3087                  */
3088                 latch_base = ioremap (0xf301a000, 0x1000);
3089                 in_8(latch_base + 0x190);
3090
3091         } else if (is_pbook_g3) {
3092                 struct device_node* mio;
3093                 macio_base = NULL;
3094                 for (mio = io->parent; mio; mio = mio->parent) {
3095                         if (strcmp(mio->name, "mac-io") == 0) {
3096                                 struct resource r;
3097                                 if (of_address_to_resource(mio, 0, &r) == 0)
3098                                         macio_base = ioremap(r.start, 0x40);
3099                                 break;
3100                         }
3101                 }
3102                 /*
3103                  * Enable CD sound input.
3104                  * The relevant bits for writing to this byte are 0x8f.
3105                  * I haven't found out what the 0x80 bit does.
3106                  * For the 0xf bits, writing 3 or 7 enables the CD
3107                  * input, any other value disables it.  Values
3108                  * 1, 3, 5, 7 enable the microphone.  Values 0, 2,
3109                  * 4, 6, 8 - f enable the input from the modem.
3110                  *  -- paulus.
3111                  */
3112                 if (macio_base)
3113                         out_8(macio_base + 0x37, 3);
3114         }
3115
3116         if (hw_can_byteswap)
3117                 dmasound.mach.hardware_afmts = (AFMT_S16_BE | AFMT_S16_LE) ;
3118         else
3119                 dmasound.mach.hardware_afmts = AFMT_S16_BE ;
3120
3121         /* shut out chips that do output only.
3122          * may need to extend this to machines which have no inputs - even tho'
3123          * they use screamer - IIRC one of the powerbooks is like this.
3124          */
3125
3126         if (awacs_revision != AWACS_DACA) {
3127                 dmasound.mach.capabilities = DSP_CAP_DUPLEX ;
3128                 dmasound.mach.record = PMacRecord ;
3129         }
3130
3131         dmasound.mach.default_hard = def_hard ;
3132         dmasound.mach.default_soft = def_soft ;
3133
3134         switch (awacs_revision) {
3135                 case AWACS_BURGUNDY:
3136                         sprintf(awacs_name, "PowerMac Burgundy ") ;
3137                         break ;
3138                 case AWACS_DACA:
3139                         sprintf(awacs_name, "PowerMac DACA ") ;
3140                         break ;
3141                 case AWACS_TUMBLER:
3142                         sprintf(awacs_name, "PowerMac Tumbler ") ;
3143                         break ;
3144                 case AWACS_SNAPPER:
3145                         sprintf(awacs_name, "PowerMac Snapper ") ;
3146                         break ;
3147                 case AWACS_SCREAMER:
3148                         sprintf(awacs_name, "PowerMac Screamer ") ;
3149                         break ;
3150                 case AWACS_AWACS:
3151                 default:
3152                         sprintf(awacs_name, "PowerMac AWACS rev %d ", awacs_revision) ;
3153                         break ;
3154         }
3155
3156         /*
3157          * XXX: we should handle errors here, but that would mean
3158          * rewriting the whole init code.  later..
3159          */
3160         input_register_device(awacs_beep_dev);
3161
3162         return dmasound_init();
3163 }
3164
3165 static void __exit dmasound_awacs_cleanup(void)
3166 {
3167         input_unregister_device(awacs_beep_dev);
3168
3169         switch (awacs_revision) {
3170                 case AWACS_TUMBLER:
3171                 case AWACS_SNAPPER:
3172                         tas_dmasound_cleanup();
3173                         tas_cleanup();
3174                         break ;
3175                 case AWACS_DACA:
3176                         daca_cleanup();
3177                         break;
3178         }
3179         dmasound_deinit();
3180
3181 }
3182
3183 MODULE_DESCRIPTION("PowerMac built-in audio driver.");
3184 MODULE_LICENSE("GPL");
3185
3186 module_init(dmasound_awacs_init);
3187 module_exit(dmasound_awacs_cleanup);