git.oblomov.eu Git - linux-2.6/blob - sound/pci/cs5535audio/cs5535audio.c

   1 /*
   2  * Driver for audio on multifunction CS5535/6 companion device
   3  * Copyright (C) Jaya Kumar
   4  *
   5  * Based on Jaroslav Kysela and Takashi Iwai's examples.
   6  * This work was sponsored by CIS(M) Sdn Bhd.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21  *
  22  */
  23
  24 #include <sound/driver.h>
  25 #include <linux/delay.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/init.h>
  28 #include <linux/pci.h>
  29 #include <linux/slab.h>
  30 #include <linux/moduleparam.h>
  31 #include <asm/io.h>
  32 #include <sound/core.h>
  33 #include <sound/control.h>
  34 #include <sound/pcm.h>
  35 #include <sound/rawmidi.h>
  36 #include <sound/ac97_codec.h>
  37 #include <sound/initval.h>
  38 #include <sound/asoundef.h>
  39 #include "cs5535audio.h"
  40
  41 #define DRIVER_NAME "cs5535audio"
  42
  43 static char *ac97_quirk;
  44 module_param(ac97_quirk, charp, 0444);
  45 MODULE_PARM_DESC(ac97_quirk, "AC'97 board specific workarounds.");
  46
  47 static struct ac97_quirk ac97_quirks[] __devinitdata = {
  48 #if 0 /* Not yet confirmed if all 5536 boards are HP only */
  49         {
  50                 .subvendor = PCI_VENDOR_ID_AMD,
  51                 .subdevice = PCI_DEVICE_ID_AMD_CS5536_AUDIO,
  52                 .name = "AMD RDK",
  53                 .type = AC97_TUNE_HP_ONLY
  54         },
  55 #endif
  56         {}
  57 };
  58
  59 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  60 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  61 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  62
  63 static struct pci_device_id snd_cs5535audio_ids[] __devinitdata = {
  64         { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO) },
  65         { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO) },
  66         {}
  67 };
  68
  69 MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids);
  70
  71 static void wait_till_cmd_acked(struct cs5535audio *cs5535au, unsigned long timeout)
  72 {
  73         unsigned int tmp;
  74         do {
  75                 tmp = cs_readl(cs5535au, ACC_CODEC_CNTL);
  76                 if (!(tmp & CMD_NEW))
  77                         break;
  78                 udelay(1);
  79         } while (--timeout);
  80         if (!timeout)
  81                 snd_printk(KERN_ERR "Failure writing to cs5535 codec\n");
  82 }
  83
  84 static unsigned short snd_cs5535audio_codec_read(struct cs5535audio *cs5535au,
  85                                                  unsigned short reg)
  86 {
  87         unsigned int regdata;
  88         unsigned int timeout;
  89         unsigned int val;
  90
  91         regdata = ((unsigned int) reg) << 24;
  92         regdata |= ACC_CODEC_CNTL_RD_CMD;
  93         regdata |= CMD_NEW;
  94
  95         cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
  96         wait_till_cmd_acked(cs5535au, 50);
  97
  98         timeout = 50;
  99         do {
 100                 val = cs_readl(cs5535au, ACC_CODEC_STATUS);
 101                 if ((val & STS_NEW) && reg == (val >> 24))
 102                         break;
 103                 udelay(1);
 104         } while (--timeout);
 105         if (!timeout)
 106                 snd_printk(KERN_ERR "Failure reading cs5535 codec\n");
 107
 108         return (unsigned short) val;
 109 }
 110
 111 static void snd_cs5535audio_codec_write(struct cs5535audio *cs5535au,
 112                                         unsigned short reg, unsigned short val)
 113 {
 114         unsigned int regdata;
 115
 116         regdata = ((unsigned int) reg) << 24;
 117         regdata |= val;
 118         regdata &= CMD_MASK;
 119         regdata |= CMD_NEW;
 120         regdata &= ACC_CODEC_CNTL_WR_CMD;
 121
 122         cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
 123         wait_till_cmd_acked(cs5535au, 50);
 124 }
 125
 126 static void snd_cs5535audio_ac97_codec_write(struct snd_ac97 *ac97,
 127                                              unsigned short reg, unsigned short val)
 128 {
 129         struct cs5535audio *cs5535au = ac97->private_data;
 130         snd_cs5535audio_codec_write(cs5535au, reg, val);
 131 }
 132
 133 static unsigned short snd_cs5535audio_ac97_codec_read(struct snd_ac97 *ac97,
 134                                                       unsigned short reg)
 135 {
 136         struct cs5535audio *cs5535au = ac97->private_data;
 137         return snd_cs5535audio_codec_read(cs5535au, reg);
 138 }
 139
 140 static int snd_cs5535audio_mixer(struct cs5535audio *cs5535au)
 141 {
 142         struct snd_card *card = cs5535au->card;
 143         struct snd_ac97_bus *pbus;
 144         struct snd_ac97_template ac97;
 145         int err;
 146         static struct snd_ac97_bus_ops ops = {
 147                 .write = snd_cs5535audio_ac97_codec_write,
 148                 .read = snd_cs5535audio_ac97_codec_read,
 149         };
 150
 151         if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0)
 152                 return err;
 153
 154         memset(&ac97, 0, sizeof(ac97));
 155         ac97.scaps = AC97_SCAP_AUDIO|AC97_SCAP_SKIP_MODEM;
 156         ac97.private_data = cs5535au;
 157         ac97.pci = cs5535au->pci;
 158
 159         if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) {
 160                 snd_printk(KERN_ERR "mixer failed\n");
 161                 return err;
 162         }
 163
 164         snd_ac97_tune_hardware(cs5535au->ac97, ac97_quirks, ac97_quirk);
 165
 166         return 0;
 167 }
 168
 169 static void process_bm0_irq(struct cs5535audio *cs5535au)
 170 {
 171         u8 bm_stat;
 172         spin_lock(&cs5535au->reg_lock);
 173         bm_stat = cs_readb(cs5535au, ACC_BM0_STATUS);
 174         spin_unlock(&cs5535au->reg_lock);
 175         if (bm_stat & EOP) {
 176                 struct cs5535audio_dma *dma;
 177                 dma = cs5535au->playback_substream->runtime->private_data;
 178                 snd_pcm_period_elapsed(cs5535au->playback_substream);
 179         } else {
 180                 snd_printk(KERN_ERR "unexpected bm0 irq src, bm_stat=%x\n",
 181                                         bm_stat);
 182         }
 183 }
 184
 185 static void process_bm1_irq(struct cs5535audio *cs5535au)
 186 {
 187         u8 bm_stat;
 188         spin_lock(&cs5535au->reg_lock);
 189         bm_stat = cs_readb(cs5535au, ACC_BM1_STATUS);
 190         spin_unlock(&cs5535au->reg_lock);
 191         if (bm_stat & EOP) {
 192                 struct cs5535audio_dma *dma;
 193                 dma = cs5535au->capture_substream->runtime->private_data;
 194                 snd_pcm_period_elapsed(cs5535au->capture_substream);
 195         }
 196 }
 197
 198 static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id,
 199                                              struct pt_regs *regs)
 200 {
 201         u16 acc_irq_stat;
 202         u8 bm_stat;
 203         unsigned char count;
 204         struct cs5535audio *cs5535au = dev_id;
 205
 206         if (cs5535au == NULL)
 207                 return IRQ_NONE;
 208
 209         acc_irq_stat = cs_readw(cs5535au, ACC_IRQ_STATUS);
 210
 211         if (!acc_irq_stat)
 212                 return IRQ_NONE;
 213         for (count = 0; count < 10; count++) {
 214                 if (acc_irq_stat & (1 << count)) {
 215                         switch (count) {
 216                         case IRQ_STS:
 217                                 cs_readl(cs5535au, ACC_GPIO_STATUS);
 218                                 break;
 219                         case WU_IRQ_STS:
 220                                 cs_readl(cs5535au, ACC_GPIO_STATUS);
 221                                 break;
 222                         case BM0_IRQ_STS:
 223                                 process_bm0_irq(cs5535au);
 224                                 break;
 225                         case BM1_IRQ_STS:
 226                                 process_bm1_irq(cs5535au);
 227                                 break;
 228                         case BM2_IRQ_STS:
 229                                 bm_stat = cs_readb(cs5535au, ACC_BM2_STATUS);
 230                                 break;
 231                         case BM3_IRQ_STS:
 232                                 bm_stat = cs_readb(cs5535au, ACC_BM3_STATUS);
 233                                 break;
 234                         case BM4_IRQ_STS:
 235                                 bm_stat = cs_readb(cs5535au, ACC_BM4_STATUS);
 236                                 break;
 237                         case BM5_IRQ_STS:
 238                                 bm_stat = cs_readb(cs5535au, ACC_BM5_STATUS);
 239                                 break;
 240                         case BM6_IRQ_STS:
 241                                 bm_stat = cs_readb(cs5535au, ACC_BM6_STATUS);
 242                                 break;
 243                         case BM7_IRQ_STS:
 244                                 bm_stat = cs_readb(cs5535au, ACC_BM7_STATUS);
 245                                 break;
 246                         default:
 247                                 snd_printk(KERN_ERR "Unexpected irq src\n");
 248                                 break;
 249                         }
 250                 }
 251         }
 252         return IRQ_HANDLED;
 253 }
 254
 255 static int snd_cs5535audio_free(struct cs5535audio *cs5535au)
 256 {
 257         synchronize_irq(cs5535au->irq);
 258         pci_set_power_state(cs5535au->pci, 3);
 259
 260         if (cs5535au->irq >= 0)
 261                 free_irq(cs5535au->irq, cs5535au);
 262
 263         pci_release_regions(cs5535au->pci);
 264         pci_disable_device(cs5535au->pci);
 265         kfree(cs5535au);
 266         return 0;
 267 }
 268
 269 static int snd_cs5535audio_dev_free(struct snd_device *device)
 270 {
 271         struct cs5535audio *cs5535au = device->device_data;
 272         return snd_cs5535audio_free(cs5535au);
 273 }
 274
 275 static int __devinit snd_cs5535audio_create(struct snd_card *card,
 276                                             struct pci_dev *pci,
 277                                             struct cs5535audio **rcs5535au)
 278 {
 279         struct cs5535audio *cs5535au;
 280
 281         int err;
 282         static struct snd_device_ops ops = {
 283                 .dev_free =     snd_cs5535audio_dev_free,
 284         };
 285
 286         *rcs5535au = NULL;
 287         if ((err = pci_enable_device(pci)) < 0)
 288                 return err;
 289
 290         if (pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0 ||
 291             pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0) {
 292                 printk(KERN_WARNING "unable to get 32bit dma\n");
 293                 err = -ENXIO;
 294                 goto pcifail;
 295         }
 296
 297         cs5535au = kzalloc(sizeof(*cs5535au), GFP_KERNEL);
 298         if (cs5535au == NULL) {
 299                 err = -ENOMEM;
 300                 goto pcifail;
 301         }
 302
 303         spin_lock_init(&cs5535au->reg_lock);
 304         cs5535au->card = card;
 305         cs5535au->pci = pci;
 306         cs5535au->irq = -1;
 307
 308         if ((err = pci_request_regions(pci, "CS5535 Audio")) < 0) {
 309                 kfree(cs5535au);
 310                 goto pcifail;
 311         }
 312
 313         cs5535au->port = pci_resource_start(pci, 0);
 314
 315         if (request_irq(pci->irq, snd_cs5535audio_interrupt,
 316                         SA_INTERRUPT|SA_SHIRQ, "CS5535 Audio", cs5535au)) {
 317                 snd_printk("unable to grab IRQ %d\n", pci->irq);
 318                 err = -EBUSY;
 319                 goto sndfail;
 320         }
 321
 322         cs5535au->irq = pci->irq;
 323         pci_set_master(pci);
 324
 325         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
 326                                   cs5535au, &ops)) < 0)
 327                 goto sndfail;
 328
 329         snd_card_set_dev(card, &pci->dev);
 330
 331         *rcs5535au = cs5535au;
 332         return 0;
 333
 334 sndfail: /* leave the device alive, just kill the snd */
 335         snd_cs5535audio_free(cs5535au);
 336         return err;
 337
 338 pcifail:
 339         pci_disable_device(pci);
 340         return err;
 341 }
 342
 343 static int __devinit snd_cs5535audio_probe(struct pci_dev *pci,
 344                                            const struct pci_device_id *pci_id)
 345 {
 346         static int dev;
 347         struct snd_card *card;
 348         struct cs5535audio *cs5535au;
 349         int err;
 350
 351         if (dev >= SNDRV_CARDS)
 352                 return -ENODEV;
 353         if (!enable[dev]) {
 354                 dev++;
 355                 return -ENOENT;
 356         }
 357
 358         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 359         if (card == NULL)
 360                 return -ENOMEM;
 361
 362         if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0)
 363                 goto probefail_out;
 364
 365         card->private_data = cs5535au;
 366
 367         if ((err = snd_cs5535audio_mixer(cs5535au)) < 0)
 368                 goto probefail_out;
 369
 370         if ((err = snd_cs5535audio_pcm(cs5535au)) < 0)
 371                 goto probefail_out;
 372
 373         strcpy(card->driver, DRIVER_NAME);
 374
 375         strcpy(card->shortname, "CS5535 Audio");
 376         sprintf(card->longname, "%s %s at 0x%lx, irq %i",
 377                 card->shortname, card->driver,
 378                 cs5535au->port, cs5535au->irq);
 379
 380         if ((err = snd_card_register(card)) < 0)
 381                 goto probefail_out;
 382
 383         pci_set_drvdata(pci, card);
 384         dev++;
 385         return 0;
 386
 387 probefail_out:
 388         snd_card_free(card);
 389         return err;
 390 }
 391
 392 static void __devexit snd_cs5535audio_remove(struct pci_dev *pci)
 393 {
 394         snd_card_free(pci_get_drvdata(pci));
 395         pci_set_drvdata(pci, NULL);
 396 }
 397
 398 static struct pci_driver driver = {
 399         .name = DRIVER_NAME,
 400         .id_table = snd_cs5535audio_ids,
 401         .probe = snd_cs5535audio_probe,
 402         .remove = __devexit_p(snd_cs5535audio_remove),
 403 #ifdef CONFIG_PM
 404         .suspend = snd_cs5535audio_suspend,
 405         .resume = snd_cs5535audio_resume,
 406 #endif
 407 };
 408
 409 static int __init alsa_card_cs5535audio_init(void)
 410 {
 411         return pci_register_driver(&driver);
 412 }
 413
 414 static void __exit alsa_card_cs5535audio_exit(void)
 415 {
 416         pci_unregister_driver(&driver);
 417 }
 418
 419 module_init(alsa_card_cs5535audio_init)
 420 module_exit(alsa_card_cs5535audio_exit)
 421
 422 MODULE_AUTHOR("Jaya Kumar");
 423 MODULE_LICENSE("GPL");
 424 MODULE_DESCRIPTION("CS5535 Audio");
 425 MODULE_SUPPORTED_DEVICE("CS5535 Audio");