sound/arm/sa11xx-uda1341.c

   1 /*
   2  *  Driver for Philips UDA1341TS on Compaq iPAQ H3600 soundcard
   3  *  Copyright (C) 2002 Tomas Kasparek <tomas.kasparek@seznam.cz>
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License.
   7  *
   8  * History:
   9  *
  10  * 2002-03-13   Tomas Kasparek  initial release - based on h3600-uda1341.c from OSS
  11  * 2002-03-20   Tomas Kasparek  playback over ALSA is working
  12  * 2002-03-28   Tomas Kasparek  playback over OSS emulation is working
  13  * 2002-03-29   Tomas Kasparek  basic capture is working (native ALSA)
  14  * 2002-03-29   Tomas Kasparek  capture is working (OSS emulation)
  15  * 2002-04-04   Tomas Kasparek  better rates handling (allow non-standard rates)
  16  * 2003-02-14   Brian Avery     fixed full duplex mode, other updates
  17  * 2003-02-20   Tomas Kasparek  merged updates by Brian (except HAL)
  18  * 2003-04-19   Jaroslav Kysela recoded DMA stuff to follow 2.4.18rmk3-hh24 kernel
  19  *                              working suspend and resume
  20  * 2003-04-28   Tomas Kasparek  updated work by Jaroslav to compile it under 2.5.x again
  21  *                              merged HAL layer (patches from Brian)
  22  */
  23
  24 /* $Id: sa11xx-uda1341.c,v 1.27 2005/12/07 09:13:42 cladisch Exp $ */
  25
  26 /***************************************************************************************************
  27 *
  28 * To understand what Alsa Drivers should be doing look at "Writing an Alsa Driver" by Takashi Iwai
  29 * available in the Alsa doc section on the website
  30 *
  31 * A few notes to make things clearer. The UDA1341 is hooked up to Serial port 4 on the SA1100.
  32 * We are using  SSP mode to talk to the UDA1341. The UDA1341 bit & wordselect clocks are generated
  33 * by this UART. Unfortunately, the clock only runs if the transmit buffer has something in it.
  34 * So, if we are just recording, we feed the transmit DMA stream a bunch of 0x0000 so that the
  35 * transmit buffer is full and the clock keeps going. The zeroes come from FLUSH_BASE_PHYS which
  36 * is a mem loc that always decodes to 0's w/ no off chip access.
  37 *
  38 * Some alsa terminology:
  39 *       frame => num_channels * sample_size  e.g stereo 16 bit is 2 * 16 = 32 bytes
  40 *       period => the least number of bytes that will generate an interrupt e.g. we have a 1024 byte
  41 *             buffer and 4 periods in the runtime structure this means we'll get an int every 256
  42 *             bytes or 4 times per buffer.
  43 *             A number of the sizes are in frames rather than bytes, use frames_to_bytes and
  44 *             bytes_to_frames to convert.  The easiest way to tell the units is to look at the
  45 *             type i.e. runtime-> buffer_size is in frames and its type is snd_pcm_uframes_t
  46 *
  47 *       Notes about the pointer fxn:
  48 *       The pointer fxn needs to return the offset into the dma buffer in frames.
  49 *       Interrupts must be blocked before calling the dma_get_pos fxn to avoid race with interrupts.
  50 *
  51 *       Notes about pause/resume
  52 *       Implementing this would be complicated so it's skipped.  The problem case is:
  53 *       A full duplex connection is going, then play is paused. At this point you need to start xmitting
  54 *       0's to keep the record active which means you cant just freeze the dma and resume it later you'd
  55 *       need to save off the dma info, and restore it properly on a resume.  Yeach!
  56 *
  57 *       Notes about transfer methods:
  58 *       The async write calls fail.  I probably need to implement something else to support them?
  59 *
  60 ***************************************************************************************************/
  61
  62 #include <linux/module.h>
  63 #include <linux/moduleparam.h>
  64 #include <linux/init.h>
  65 #include <linux/err.h>
  66 #include <linux/platform_device.h>
  67 #include <linux/errno.h>
  68 #include <linux/ioctl.h>
  69 #include <linux/delay.h>
  70 #include <linux/slab.h>
  71
  72 #ifdef CONFIG_PM
  73 #include <linux/pm.h>
  74 #endif
  75
  76 #include <asm/hardware.h>
  77 #include <asm/arch/h3600.h>
  78 #include <asm/mach-types.h>
  79 #include <asm/dma.h>
  80
  81 #include <sound/core.h>
  82 #include <sound/pcm.h>
  83 #include <sound/initval.h>
  84
  85 #include <linux/l3/l3.h>
  86
  87 #undef DEBUG_MODE
  88 #undef DEBUG_FUNCTION_NAMES
  89 #include <sound/uda1341.h>
  90
  91 /*
  92  * FIXME: Is this enough as autodetection of 2.4.X-rmkY-hhZ kernels?
  93  * We use DMA stuff from 2.4.18-rmk3-hh24 here to be able to compile this
  94  * module for Familiar 0.6.1
  95  */
  96
  97 /* {{{ Type definitions */
  98
  99 MODULE_AUTHOR("Tomas Kasparek <tomas.kasparek@seznam.cz>");
 100 MODULE_LICENSE("GPL");
 101 MODULE_DESCRIPTION("SA1100/SA1111 + UDA1341TS driver for ALSA");
 102 MODULE_SUPPORTED_DEVICE("{{UDA1341,iPAQ H3600 UDA1341TS}}");
 103
 104 static char *id;        /* ID for this card */
 105
 106 module_param(id, charp, 0444);
 107 MODULE_PARM_DESC(id, "ID string for SA1100/SA1111 + UDA1341TS soundcard.");
 108
 109 struct audio_stream {
 110         char *id;               /* identification string */
 111         int stream_id;          /* numeric identification */
 112         dma_device_t dma_dev;   /* device identifier for DMA */
 113 #ifdef HH_VERSION
 114         dmach_t dmach;          /* dma channel identification */
 115 #else
 116         dma_regs_t *dma_regs;   /* points to our DMA registers */
 117 #endif
 118         unsigned int active:1;  /* we are using this stream for transfer now */
 119         int period;             /* current transfer period */
 120         int periods;            /* current count of periods registerd in the DMA engine */
 121         int tx_spin;            /* are we recoding - flag used to do DMA trans. for sync */
 122         unsigned int old_offset;
 123         spinlock_t dma_lock;    /* for locking in DMA operations (see dma-sa1100.c in the kernel) */
 124         struct snd_pcm_substream *stream;
 125 };
 126
 127 struct sa11xx_uda1341 {
 128         struct snd_card *card;
 129         struct l3_client *uda1341;
 130         struct snd_pcm *pcm;
 131         long samplerate;
 132         struct audio_stream s[2];       /* playback & capture */
 133 };
 134
 135 static unsigned int rates[] = {
 136         8000,  10666, 10985, 14647,
 137         16000, 21970, 22050, 24000,
 138         29400, 32000, 44100, 48000,
 139 };
 140
 141 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 142         .count  = ARRAY_SIZE(rates),
 143         .list   = rates,
 144         .mask   = 0,
 145 };
 146
 147 static struct platform_device *device;
 148
 149 /* }}} */
 150
 151 /* {{{ Clock and sample rate stuff */
 152
 153 /*
 154  * Stop-gap solution until rest of hh.org HAL stuff is merged.
 155  */
 156 #define GPIO_H3600_CLK_SET0             GPIO_GPIO (12)
 157 #define GPIO_H3600_CLK_SET1             GPIO_GPIO (13)
 158
 159 #ifdef CONFIG_SA1100_H3XXX
 160 #define clr_sa11xx_uda1341_egpio(x)     clr_h3600_egpio(x)
 161 #define set_sa11xx_uda1341_egpio(x)     set_h3600_egpio(x)
 162 #else
 163 #error This driver could serve H3x00 handhelds only!
 164 #endif
 165
 166 static void sa11xx_uda1341_set_audio_clock(long val)
 167 {
 168         switch (val) {
 169         case 24000: case 32000: case 48000:     /* 00: 12.288 MHz */
 170                 GPCR = GPIO_H3600_CLK_SET0 | GPIO_H3600_CLK_SET1;
 171                 break;
 172
 173         case 22050: case 29400: case 44100:     /* 01: 11.2896 MHz */
 174                 GPSR = GPIO_H3600_CLK_SET0;
 175                 GPCR = GPIO_H3600_CLK_SET1;
 176                 break;
 177
 178         case 8000: case 10666: case 16000:      /* 10: 4.096 MHz */
 179                 GPCR = GPIO_H3600_CLK_SET0;
 180                 GPSR = GPIO_H3600_CLK_SET1;
 181                 break;
 182
 183         case 10985: case 14647: case 21970:     /* 11: 5.6245 MHz */
 184                 GPSR = GPIO_H3600_CLK_SET0 | GPIO_H3600_CLK_SET1;
 185                 break;
 186         }
 187 }
 188
 189 static void sa11xx_uda1341_set_samplerate(struct sa11xx_uda1341 *sa11xx_uda1341, long rate)
 190 {
 191         int clk_div = 0;
 192         int clk=0;
 193
 194         /* We don't want to mess with clocks when frames are in flight */
 195         Ser4SSCR0 &= ~SSCR0_SSE;
 196         /* wait for any frame to complete */
 197         udelay(125);
 198
 199         /*
 200          * We have the following clock sources:
 201          * 4.096 MHz, 5.6245 MHz, 11.2896 MHz, 12.288 MHz
 202          * Those can be divided either by 256, 384 or 512.
 203          * This makes up 12 combinations for the following samplerates...
 204          */
 205         if (rate >= 48000)
 206                 rate = 48000;
 207         else if (rate >= 44100)
 208                 rate = 44100;
 209         else if (rate >= 32000)
 210                 rate = 32000;
 211         else if (rate >= 29400)
 212                 rate = 29400;
 213         else if (rate >= 24000)
 214                 rate = 24000;
 215         else if (rate >= 22050)
 216                 rate = 22050;
 217         else if (rate >= 21970)
 218                 rate = 21970;
 219         else if (rate >= 16000)
 220                 rate = 16000;
 221         else if (rate >= 14647)
 222                 rate = 14647;
 223         else if (rate >= 10985)
 224                 rate = 10985;
 225         else if (rate >= 10666)
 226                 rate = 10666;
 227         else
 228                 rate = 8000;
 229
 230         /* Set the external clock generator */
 231
 232         sa11xx_uda1341_set_audio_clock(rate);
 233
 234         /* Select the clock divisor */
 235         switch (rate) {
 236         case 8000:
 237         case 10985:
 238         case 22050:
 239         case 24000:
 240                 clk = F512;
 241                 clk_div = SSCR0_SerClkDiv(16);
 242                 break;
 243         case 16000:
 244         case 21970:
 245         case 44100:
 246         case 48000:
 247                 clk = F256;
 248                 clk_div = SSCR0_SerClkDiv(8);
 249                 break;
 250         case 10666:
 251         case 14647:
 252         case 29400:
 253         case 32000:
 254                 clk = F384;
 255                 clk_div = SSCR0_SerClkDiv(12);
 256                 break;
 257         }
 258
 259         /* FMT setting should be moved away when other FMTs are added (FIXME) */
 260         l3_command(sa11xx_uda1341->uda1341, CMD_FORMAT, (void *)LSB16);
 261
 262         l3_command(sa11xx_uda1341->uda1341, CMD_FS, (void *)clk);
 263         Ser4SSCR0 = (Ser4SSCR0 & ~0xff00) + clk_div + SSCR0_SSE;
 264         sa11xx_uda1341->samplerate = rate;
 265 }
 266
 267 /* }}} */
 268
 269 /* {{{ HW init and shutdown */
 270
 271 static void sa11xx_uda1341_audio_init(struct sa11xx_uda1341 *sa11xx_uda1341)
 272 {
 273         unsigned long flags;
 274
 275         /* Setup DMA stuff */
 276         sa11xx_uda1341->s[SNDRV_PCM_STREAM_PLAYBACK].id = "UDA1341 out";
 277         sa11xx_uda1341->s[SNDRV_PCM_STREAM_PLAYBACK].stream_id = SNDRV_PCM_STREAM_PLAYBACK;
 278         sa11xx_uda1341->s[SNDRV_PCM_STREAM_PLAYBACK].dma_dev = DMA_Ser4SSPWr;
 279
 280         sa11xx_uda1341->s[SNDRV_PCM_STREAM_CAPTURE].id = "UDA1341 in";
 281         sa11xx_uda1341->s[SNDRV_PCM_STREAM_CAPTURE].stream_id = SNDRV_PCM_STREAM_CAPTURE;
 282         sa11xx_uda1341->s[SNDRV_PCM_STREAM_CAPTURE].dma_dev = DMA_Ser4SSPRd;
 283
 284         /* Initialize the UDA1341 internal state */
 285
 286         /* Setup the uarts */
 287         local_irq_save(flags);
 288         GAFR |= (GPIO_SSP_CLK);
 289         GPDR &= ~(GPIO_SSP_CLK);
 290         Ser4SSCR0 = 0;
 291         Ser4SSCR0 = SSCR0_DataSize(16) + SSCR0_TI + SSCR0_SerClkDiv(8);
 292         Ser4SSCR1 = SSCR1_SClkIactL + SSCR1_SClk1P + SSCR1_ExtClk;
 293         Ser4SSCR0 |= SSCR0_SSE;
 294         local_irq_restore(flags);
 295
 296         /* Enable the audio power */
 297
 298         clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_CODEC_NRESET);
 299         set_sa11xx_uda1341_egpio(IPAQ_EGPIO_AUDIO_ON);
 300         set_sa11xx_uda1341_egpio(IPAQ_EGPIO_QMUTE);
 301
 302         /* Wait for the UDA1341 to wake up */
 303         mdelay(1); //FIXME - was removed by Perex - Why?
 304
 305         /* Initialize the UDA1341 internal state */
 306         l3_open(sa11xx_uda1341->uda1341);
 307
 308         /* external clock configuration (after l3_open - regs must be initialized */
 309         sa11xx_uda1341_set_samplerate(sa11xx_uda1341, sa11xx_uda1341->samplerate);
 310
 311         /* Wait for the UDA1341 to wake up */
 312         set_sa11xx_uda1341_egpio(IPAQ_EGPIO_CODEC_NRESET);
 313         mdelay(1);
 314
 315         /* make the left and right channels unswapped (flip the WS latch) */
 316         Ser4SSDR = 0;
 317
 318         clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_QMUTE);
 319 }
 320
 321 static void sa11xx_uda1341_audio_shutdown(struct sa11xx_uda1341 *sa11xx_uda1341)
 322 {
 323         /* mute on */
 324         set_sa11xx_uda1341_egpio(IPAQ_EGPIO_QMUTE);
 325
 326         /* disable the audio power and all signals leading to the audio chip */
 327         l3_close(sa11xx_uda1341->uda1341);
 328         Ser4SSCR0 = 0;
 329         clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_CODEC_NRESET);
 330
 331         /* power off and mute off */
 332         /* FIXME - is muting off necesary??? */
 333
 334         clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_AUDIO_ON);
 335         clr_sa11xx_uda1341_egpio(IPAQ_EGPIO_QMUTE);
 336 }
 337
 338 /* }}} */
 339
 340 /* {{{ DMA staff */
 341
 342 /*
 343  * these are the address and sizes used to fill the xmit buffer
 344  * so we can get a clock in record only mode
 345  */
 346 #define FORCE_CLOCK_ADDR                (dma_addr_t)FLUSH_BASE_PHYS
 347 #define FORCE_CLOCK_SIZE                4096 // was 2048
 348
 349 // FIXME Why this value exactly - wrote comment
 350 #define DMA_BUF_SIZE    8176    /* <= MAX_DMA_SIZE from asm/arch-sa1100/dma.h */
 351
 352 #ifdef HH_VERSION
 353
 354 static int audio_dma_request(struct audio_stream *s, void (*callback)(void *, int))
 355 {
 356         int ret;
 357
 358         ret = sa1100_request_dma(&s->dmach, s->id, s->dma_dev);
 359         if (ret < 0) {
 360                 printk(KERN_ERR "unable to grab audio dma 0x%x\n", s->dma_dev);
 361                 return ret;
 362         }
 363         sa1100_dma_set_callback(s->dmach, callback);
 364         return 0;
 365 }
 366
 367 static inline void audio_dma_free(struct audio_stream *s)
 368 {
 369         sa1100_free_dma(s->dmach);
 370         s->dmach = -1;
 371 }
 372
 373 #else
 374
 375 static int audio_dma_request(struct audio_stream *s, void (*callback)(void *))
 376 {
 377         int ret;
 378
 379         ret = sa1100_request_dma(s->dma_dev, s->id, callback, s, &s->dma_regs);
 380         if (ret < 0)
 381                 printk(KERN_ERR "unable to grab audio dma 0x%x\n", s->dma_dev);
 382         return ret;
 383 }
 384
 385 static void audio_dma_free(struct audio_stream *s)
 386 {
 387         sa1100_free_dma(s->dma_regs);
 388         s->dma_regs = 0;
 389 }
 390
 391 #endif
 392
 393 static u_int audio_get_dma_pos(struct audio_stream *s)
 394 {
 395         struct snd_pcm_substream *substream = s->stream;
 396         struct snd_pcm_runtime *runtime = substream->runtime;
 397         unsigned int offset;
 398         unsigned long flags;
 399         dma_addr_t addr;
 400
 401         // this must be called w/ interrupts locked out see dma-sa1100.c in the kernel
 402         spin_lock_irqsave(&s->dma_lock, flags);
 403 #ifdef HH_VERSION
 404         sa1100_dma_get_current(s->dmach, NULL, &addr);
 405 #else
 406         addr = sa1100_get_dma_pos((s)->dma_regs);
 407 #endif
 408         offset = addr - runtime->dma_addr;
 409         spin_unlock_irqrestore(&s->dma_lock, flags);
 410
 411         offset = bytes_to_frames(runtime,offset);
 412         if (offset >= runtime->buffer_size)
 413                 offset = 0;
 414
 415         return offset;
 416 }
 417
 418 /*
 419  * this stops the dma and clears the dma ptrs
 420  */
 421 static void audio_stop_dma(struct audio_stream *s)
 422 {
 423         unsigned long flags;
 424
 425         spin_lock_irqsave(&s->dma_lock, flags);
 426         s->active = 0;
 427         s->period = 0;
 428         /* this stops the dma channel and clears the buffer ptrs */
 429 #ifdef HH_VERSION
 430         sa1100_dma_flush_all(s->dmach);
 431 #else
 432         sa1100_clear_dma(s->dma_regs);
 433 #endif
 434         spin_unlock_irqrestore(&s->dma_lock, flags);
 435 }
 436
 437 static void audio_process_dma(struct audio_stream *s)
 438 {
 439         struct snd_pcm_substream *substream = s->stream;
 440         struct snd_pcm_runtime *runtime;
 441         unsigned int dma_size;
 442         unsigned int offset;
 443         int ret;
 444
 445         /* we are requested to process synchronization DMA transfer */
 446         if (s->tx_spin) {
 447                 snd_assert(s->stream_id == SNDRV_PCM_STREAM_PLAYBACK, return);
 448                 /* fill the xmit dma buffers and return */
 449 #ifdef HH_VERSION
 450                 sa1100_dma_set_spin(s->dmach, FORCE_CLOCK_ADDR, FORCE_CLOCK_SIZE);
 451 #else
 452                 while (1) {
 453                         ret = sa1100_start_dma(s->dma_regs, FORCE_CLOCK_ADDR, FORCE_CLOCK_SIZE);
 454                         if (ret)
 455                                 return;
 456                 }
 457 #endif
 458                 return;
 459         }
 460
 461         /* must be set here - only valid for running streams, not for forced_clock dma fills  */
 462         runtime = substream->runtime;
 463         while (s->active && s->periods < runtime->periods) {
 464                 dma_size = frames_to_bytes(runtime, runtime->period_size);
 465                 if (s->old_offset) {
 466                         /* a little trick, we need resume from old position */
 467                         offset = frames_to_bytes(runtime, s->old_offset - 1);
 468                         s->old_offset = 0;
 469                         s->periods = 0;
 470                         s->period = offset / dma_size;
 471                         offset %= dma_size;
 472                         dma_size = dma_size - offset;
 473                         if (!dma_size)
 474                                 continue;               /* special case */
 475                 } else {
 476                         offset = dma_size * s->period;
 477                         snd_assert(dma_size <= DMA_BUF_SIZE, );
 478                 }
 479 #ifdef HH_VERSION
 480                 ret = sa1100_dma_queue_buffer(s->dmach, s, runtime->dma_addr + offset, dma_size);
 481                 if (ret)
 482                         return; //FIXME
 483 #else
 484                 ret = sa1100_start_dma((s)->dma_regs, runtime->dma_addr + offset, dma_size);
 485                 if (ret) {
 486                         printk(KERN_ERR "audio_process_dma: cannot queue DMA buffer (%i)\n", ret);
 487                         return;
 488                 }
 489 #endif
 490
 491                 s->period++;
 492                 s->period %= runtime->periods;
 493                 s->periods++;
 494         }
 495 }
 496
 497 #ifdef HH_VERSION
 498 static void audio_dma_callback(void *data, int size)
 499 #else
 500 static void audio_dma_callback(void *data)
 501 #endif
 502 {
 503         struct audio_stream *s = data;
 504
 505         /*
 506          * If we are getting a callback for an active stream then we inform
 507          * the PCM middle layer we've finished a period
 508          */
 509         if (s->active)
 510                 snd_pcm_period_elapsed(s->stream);
 511
 512         spin_lock(&s->dma_lock);
 513         if (!s->tx_spin && s->periods > 0)
 514                 s->periods--;
 515         audio_process_dma(s);
 516         spin_unlock(&s->dma_lock);
 517 }
 518
 519 /* }}} */
 520
 521 /* {{{ PCM setting */
 522
 523 /* {{{ trigger & timer */
 524
 525 static int snd_sa11xx_uda1341_trigger(struct snd_pcm_substream *substream, int cmd)
 526 {
 527         struct sa11xx_uda1341 *chip = snd_pcm_substream_chip(substream);
 528         int stream_id = substream->pstr->stream;
 529         struct audio_stream *s = &chip->s[stream_id];
 530         struct audio_stream *s1 = &chip->s[stream_id ^ 1];
 531         int err = 0;
 532
 533         /* note local interrupts are already disabled in the midlevel code */
 534         spin_lock(&s->dma_lock);
 535         switch (cmd) {
 536         case SNDRV_PCM_TRIGGER_START:
 537                 /* now we need to make sure a record only stream has a clock */
 538                 if (stream_id == SNDRV_PCM_STREAM_CAPTURE && !s1->active) {
 539                         /* we need to force fill the xmit DMA with zeros */
 540                         s1->tx_spin = 1;
 541                         audio_process_dma(s1);
 542                 }
 543                 /* this case is when you were recording then you turn on a
 544                  * playback stream so we stop (also clears it) the dma first,
 545                  * clear the sync flag and then we let it turned on
 546                  */
 547                 else {
 548                         s->tx_spin = 0;
 549                 }
 550
 551                 /* requested stream startup */
 552                 s->active = 1;
 553                 audio_process_dma(s);
 554                 break;
 555         case SNDRV_PCM_TRIGGER_STOP:
 556                 /* requested stream shutdown */
 557                 audio_stop_dma(s);
 558
 559                 /*
 560                  * now we need to make sure a record only stream has a clock
 561                  * so if we're stopping a playback with an active capture
 562                  * we need to turn the 0 fill dma on for the xmit side
 563                  */
 564                 if (stream_id == SNDRV_PCM_STREAM_PLAYBACK && s1->active) {
 565                         /* we need to force fill the xmit DMA with zeros */
 566                         s->tx_spin = 1;
 567                         audio_process_dma(s);
 568                 }
 569                 /*
 570                  * we killed a capture only stream, so we should also kill
 571                  * the zero fill transmit
 572                  */
 573                 else {
 574                         if (s1->tx_spin) {
 575                                 s1->tx_spin = 0;
 576                                 audio_stop_dma(s1);
 577                         }
 578                 }
 579
 580                 break;
 581         case SNDRV_PCM_TRIGGER_SUSPEND:
 582                 s->active = 0;
 583 #ifdef HH_VERSION
 584                 sa1100_dma_stop(s->dmach);
 585 #else
 586                 //FIXME - DMA API
 587 #endif
 588                 s->old_offset = audio_get_dma_pos(s) + 1;
 589 #ifdef HH_VERSION
 590                 sa1100_dma_flush_all(s->dmach);
 591 #else
 592                 //FIXME - DMA API
 593 #endif
 594                 s->periods = 0;
 595                 break;
 596         case SNDRV_PCM_TRIGGER_RESUME:
 597                 s->active = 1;
 598                 s->tx_spin = 0;
 599                 audio_process_dma(s);
 600                 if (stream_id == SNDRV_PCM_STREAM_CAPTURE && !s1->active) {
 601                         s1->tx_spin = 1;
 602                         audio_process_dma(s1);
 603                 }
 604                 break;
 605         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 606 #ifdef HH_VERSION
 607                 sa1100_dma_stop(s->dmach);
 608 #else
 609                 //FIXME - DMA API
 610 #endif
 611                 s->active = 0;
 612                 if (stream_id == SNDRV_PCM_STREAM_PLAYBACK) {
 613                         if (s1->active) {
 614                                 s->tx_spin = 1;
 615                                 s->old_offset = audio_get_dma_pos(s) + 1;
 616 #ifdef HH_VERSION
 617                                 sa1100_dma_flush_all(s->dmach);
 618 #else
 619                                 //FIXME - DMA API
 620 #endif
 621                                 audio_process_dma(s);
 622                         }
 623                 } else {
 624                         if (s1->tx_spin) {
 625                                 s1->tx_spin = 0;
 626 #ifdef HH_VERSION
 627                                 sa1100_dma_flush_all(s1->dmach);
 628 #else
 629                                 //FIXME - DMA API
 630 #endif
 631                         }
 632                 }
 633                 break;
 634         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 635                 s->active = 1;
 636                 if (s->old_offset) {
 637                         s->tx_spin = 0;
 638                         audio_process_dma(s);
 639                         break;
 640                 }
 641                 if (stream_id == SNDRV_PCM_STREAM_CAPTURE && !s1->active) {
 642                         s1->tx_spin = 1;
 643                         audio_process_dma(s1);
 644                 }
 645 #ifdef HH_VERSION
 646                 sa1100_dma_resume(s->dmach);
 647 #else
 648                 //FIXME - DMA API
 649 #endif
 650                 break;
 651         default:
 652                 err = -EINVAL;
 653                 break;
 654         }
 655         spin_unlock(&s->dma_lock);
 656         return err;
 657 }
 658
 659 static int snd_sa11xx_uda1341_prepare(struct snd_pcm_substream *substream)
 660 {
 661         struct sa11xx_uda1341 *chip = snd_pcm_substream_chip(substream);
 662         struct snd_pcm_runtime *runtime = substream->runtime;
 663         struct audio_stream *s = &chip->s[substream->pstr->stream];
 664
 665         /* set requested samplerate */
 666         sa11xx_uda1341_set_samplerate(chip, runtime->rate);
 667
 668         /* set requestd format when available */
 669         /* set FMT here !!! FIXME */
 670
 671         s->period = 0;
 672         s->periods = 0;
 673
 674         return 0;
 675 }
 676
 677 static snd_pcm_uframes_t snd_sa11xx_uda1341_pointer(struct snd_pcm_substream *substream)
 678 {
 679         struct sa11xx_uda1341 *chip = snd_pcm_substream_chip(substream);
 680         return audio_get_dma_pos(&chip->s[substream->pstr->stream]);
 681 }
 682
 683 /* }}} */
 684
 685 static struct snd_pcm_hardware snd_sa11xx_uda1341_capture =
 686 {
 687         .info                   = (SNDRV_PCM_INFO_INTERLEAVED |
 688                                    SNDRV_PCM_INFO_BLOCK_TRANSFER |
 689                                    SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
 690                                    SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
 691         .formats                = SNDRV_PCM_FMTBIT_S16_LE,
 692         .rates                  = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
 693                                    SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 |\
 694                                    SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
 695                                    SNDRV_PCM_RATE_KNOT),
 696         .rate_min               = 8000,
 697         .rate_max               = 48000,
 698         .channels_min           = 2,
 699         .channels_max           = 2,
 700         .buffer_bytes_max       = 64*1024,
 701         .period_bytes_min       = 64,
 702         .period_bytes_max       = DMA_BUF_SIZE,
 703         .periods_min            = 2,
 704         .periods_max            = 255,
 705         .fifo_size              = 0,
 706 };
 707
 708 static struct snd_pcm_hardware snd_sa11xx_uda1341_playback =
 709 {
 710         .info                   = (SNDRV_PCM_INFO_INTERLEAVED |
 711                                    SNDRV_PCM_INFO_BLOCK_TRANSFER |
 712                                    SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
 713                                    SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
 714         .formats                = SNDRV_PCM_FMTBIT_S16_LE,
 715         .rates                  = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
 716                                    SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 |\
 717                                    SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
 718                                    SNDRV_PCM_RATE_KNOT),
 719         .rate_min               = 8000,
 720         .rate_max               = 48000,
 721         .channels_min           = 2,
 722         .channels_max           = 2,
 723         .buffer_bytes_max       = 64*1024,
 724         .period_bytes_min       = 64,
 725         .period_bytes_max       = DMA_BUF_SIZE,
 726         .periods_min            = 2,
 727         .periods_max            = 255,
 728         .fifo_size              = 0,
 729 };
 730
 731 static int snd_card_sa11xx_uda1341_open(struct snd_pcm_substream *substream)
 732 {
 733         struct sa11xx_uda1341 *chip = snd_pcm_substream_chip(substream);
 734         struct snd_pcm_runtime *runtime = substream->runtime;
 735         int stream_id = substream->pstr->stream;
 736         int err;
 737
 738         chip->s[stream_id].stream = substream;
 739
 740         if (stream_id == SNDRV_PCM_STREAM_PLAYBACK)
 741                 runtime->hw = snd_sa11xx_uda1341_playback;
 742         else
 743                 runtime->hw = snd_sa11xx_uda1341_capture;
 744         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 745                 return err;
 746         if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates)) < 0)
 747                 return err;
 748
 749         return 0;
 750 }
 751
 752 static int snd_card_sa11xx_uda1341_close(struct snd_pcm_substream *substream)
 753 {
 754         struct sa11xx_uda1341 *chip = snd_pcm_substream_chip(substream);
 755
 756         chip->s[substream->pstr->stream].stream = NULL;
 757         return 0;
 758 }
 759
 760 /* {{{ HW params & free */
 761
 762 static int snd_sa11xx_uda1341_hw_params(struct snd_pcm_substream *substream,
 763                                         struct snd_pcm_hw_params *hw_params)
 764 {
 765
 766         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 767 }
 768
 769 static int snd_sa11xx_uda1341_hw_free(struct snd_pcm_substream *substream)
 770 {
 771         return snd_pcm_lib_free_pages(substream);
 772 }
 773
 774 /* }}} */
 775
 776 static struct snd_pcm_ops snd_card_sa11xx_uda1341_playback_ops = {
 777         .open                   = snd_card_sa11xx_uda1341_open,
 778         .close                  = snd_card_sa11xx_uda1341_close,
 779         .ioctl                  = snd_pcm_lib_ioctl,
 780         .hw_params              = snd_sa11xx_uda1341_hw_params,
 781         .hw_free                = snd_sa11xx_uda1341_hw_free,
 782         .prepare                = snd_sa11xx_uda1341_prepare,
 783         .trigger                = snd_sa11xx_uda1341_trigger,
 784         .pointer                = snd_sa11xx_uda1341_pointer,
 785 };
 786
 787 static struct snd_pcm_ops snd_card_sa11xx_uda1341_capture_ops = {
 788         .open                   = snd_card_sa11xx_uda1341_open,
 789         .close                  = snd_card_sa11xx_uda1341_close,
 790         .ioctl                  = snd_pcm_lib_ioctl,
 791         .hw_params              = snd_sa11xx_uda1341_hw_params,
 792         .hw_free                = snd_sa11xx_uda1341_hw_free,
 793         .prepare                = snd_sa11xx_uda1341_prepare,
 794         .trigger                = snd_sa11xx_uda1341_trigger,
 795         .pointer                = snd_sa11xx_uda1341_pointer,
 796 };
 797
 798 static int __init snd_card_sa11xx_uda1341_pcm(struct sa11xx_uda1341 *sa11xx_uda1341, int device)
 799 {
 800         struct snd_pcm *pcm;
 801         int err;
 802
 803         if ((err = snd_pcm_new(sa11xx_uda1341->card, "UDA1341 PCM", device, 1, 1, &pcm)) < 0)
 804                 return err;
 805
 806         /*
 807          * this sets up our initial buffers and sets the dma_type to isa.
 808          * isa works but I'm not sure why (or if) it's the right choice
 809          * this may be too large, trying it for now
 810          */
 811         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 812                                               snd_dma_isa_data(),
 813                                               64*1024, 64*1024);
 814
 815         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_sa11xx_uda1341_playback_ops);
 816         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_card_sa11xx_uda1341_capture_ops);
 817         pcm->private_data = sa11xx_uda1341;
 818         pcm->info_flags = 0;
 819         strcpy(pcm->name, "UDA1341 PCM");
 820
 821         sa11xx_uda1341_audio_init(sa11xx_uda1341);
 822
 823         /* setup DMA controller */
 824         audio_dma_request(&sa11xx_uda1341->s[SNDRV_PCM_STREAM_PLAYBACK], audio_dma_callback);
 825         audio_dma_request(&sa11xx_uda1341->s[SNDRV_PCM_STREAM_CAPTURE], audio_dma_callback);
 826
 827         sa11xx_uda1341->pcm = pcm;
 828
 829         return 0;
 830 }
 831
 832 /* }}} */
 833
 834 /* {{{ module init & exit */
 835
 836 #ifdef CONFIG_PM
 837
 838 static int snd_sa11xx_uda1341_suspend(struct platform_device *devptr,
 839                                       pm_message_t state)
 840 {
 841         struct snd_card *card = platform_get_drvdata(devptr);
 842         struct sa11xx_uda1341 *chip = card->private_data;
 843
 844         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 845         snd_pcm_suspend_all(chip->pcm);
 846 #ifdef HH_VERSION
 847         sa1100_dma_sleep(chip->s[SNDRV_PCM_STREAM_PLAYBACK].dmach);
 848         sa1100_dma_sleep(chip->s[SNDRV_PCM_STREAM_CAPTURE].dmach);
 849 #else
 850         //FIXME
 851 #endif
 852         l3_command(chip->uda1341, CMD_SUSPEND, NULL);
 853         sa11xx_uda1341_audio_shutdown(chip);
 854
 855         return 0;
 856 }
 857
 858 static int snd_sa11xx_uda1341_resume(struct platform_device *devptr)
 859 {
 860         struct snd_card *card = platform_get_drvdata(devptr);
 861         struct sa11xx_uda1341 *chip = card->private_data;
 862
 863         sa11xx_uda1341_audio_init(chip);
 864         l3_command(chip->uda1341, CMD_RESUME, NULL);
 865 #ifdef HH_VERSION
 866         sa1100_dma_wakeup(chip->s[SNDRV_PCM_STREAM_PLAYBACK].dmach);
 867         sa1100_dma_wakeup(chip->s[SNDRV_PCM_STREAM_CAPTURE].dmach);
 868 #else
 869         //FIXME
 870 #endif
 871         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 872         return 0;
 873 }
 874 #endif /* COMFIG_PM */
 875
 876 void snd_sa11xx_uda1341_free(struct snd_card *card)
 877 {
 878         struct sa11xx_uda1341 *chip = card->private_data;
 879
 880         audio_dma_free(&chip->s[SNDRV_PCM_STREAM_PLAYBACK]);
 881         audio_dma_free(&chip->s[SNDRV_PCM_STREAM_CAPTURE]);
 882 }
 883
 884 static int __init sa11xx_uda1341_probe(struct platform_device *devptr)
 885 {
 886         int err;
 887         struct snd_card *card;
 888         struct sa11xx_uda1341 *chip;
 889
 890         /* register the soundcard */
 891         card = snd_card_new(-1, id, THIS_MODULE, sizeof(struct sa11xx_uda1341));
 892         if (card == NULL)
 893                 return -ENOMEM;
 894
 895         chip = card->private_data;
 896         spin_lock_init(&chip->s[0].dma_lock);
 897         spin_lock_init(&chip->s[1].dma_lock);
 898
 899         card->private_free = snd_sa11xx_uda1341_free;
 900         chip->card = card;
 901         chip->samplerate = AUDIO_RATE_DEFAULT;
 902
 903         // mixer
 904         if ((err = snd_chip_uda1341_mixer_new(card, &chip->uda1341)))
 905                 goto nodev;
 906
 907         // PCM
 908         if ((err = snd_card_sa11xx_uda1341_pcm(chip, 0)) < 0)
 909                 goto nodev;
 910
 911         strcpy(card->driver, "UDA1341");
 912         strcpy(card->shortname, "H3600 UDA1341TS");
 913         sprintf(card->longname, "Compaq iPAQ H3600 with Philips UDA1341TS");
 914
 915         snd_card_set_dev(card, &devptr->dev);
 916
 917         if ((err = snd_card_register(card)) == 0) {
 918                 printk( KERN_INFO "iPAQ audio support initialized\n" );
 919                 platform_set_drvdata(devptr, card);
 920                 return 0;
 921         }
 922
 923  nodev:
 924         snd_card_free(card);
 925         return err;
 926 }
 927
 928 static int __devexit sa11xx_uda1341_remove(struct platform_device *devptr)
 929 {
 930         snd_card_free(platform_get_drvdata(devptr));
 931         platform_set_drvdata(devptr, NULL);
 932         return 0;
 933 }
 934
 935 #define SA11XX_UDA1341_DRIVER   "sa11xx_uda1341"
 936
 937 static struct platform_driver sa11xx_uda1341_driver = {
 938         .probe          = sa11xx_uda1341_probe,
 939         .remove         = __devexit_p(sa11xx_uda1341_remove),
 940 #ifdef CONFIG_PM
 941         .suspend        = snd_sa11xx_uda1341_suspend,
 942         .resume         = snd_sa11xx_uda1341_resume,
 943 #endif
 944         .driver         = {
 945                 .name   = SA11XX_UDA1341_DRIVER,
 946         },
 947 };
 948
 949 static int __init sa11xx_uda1341_init(void)
 950 {
 951         int err;
 952
 953         if (!machine_is_h3xxx())
 954                 return -ENODEV;
 955         if ((err = platform_driver_register(&sa11xx_uda1341_driver)) < 0)
 956                 return err;
 957         device = platform_device_register_simple(SA11XX_UDA1341_DRIVER, -1, NULL, 0);
 958         if (!IS_ERR(device)) {
 959                 if (platform_get_drvdata(device))
 960                         return 0;
 961                 platform_device_unregister(device);
 962                 err = -ENODEV;
 963         } else
 964                 err = PTR_ERR(device);
 965         platform_driver_unregister(&sa11xx_uda1341_driver);
 966         return err;
 967 }
 968
 969 static void __exit sa11xx_uda1341_exit(void)
 970 {
 971         platform_device_unregister(device);
 972         platform_driver_unregister(&sa11xx_uda1341_driver);
 973 }
 974
 975 module_init(sa11xx_uda1341_init);
 976 module_exit(sa11xx_uda1341_exit);
 977
 978 /* }}} */
 979
 980 /*
 981  * Local variables:
 982  * indent-tabs-mode: t
 983  * End:
 984  */