sound/pci/oxygen/oxygen_lib.c

   1 /*
   2  * C-Media CMI8788 driver - main driver module
   3  *
   4  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   5  *
   6  *
   7  *  This driver is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License, version 2.
   9  *
  10  *  This driver is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this driver; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  18  */
  19
  20 #include <sound/driver.h>
  21 #include <linux/delay.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/mutex.h>
  24 #include <linux/pci.h>
  25 #include <sound/ac97_codec.h>
  26 #include <sound/asoundef.h>
  27 #include <sound/core.h>
  28 #include <sound/info.h>
  29 #include <sound/mpu401.h>
  30 #include <sound/pcm.h>
  31 #include "oxygen.h"
  32
  33 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  34 MODULE_DESCRIPTION("C-Media CMI8788 helper library");
  35 MODULE_LICENSE("GPL");
  36
  37
  38 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
  39 {
  40         struct oxygen *chip = dev_id;
  41         unsigned int status, clear, elapsed_streams, i;
  42
  43         status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
  44         if (!status)
  45                 return IRQ_NONE;
  46
  47         spin_lock(&chip->reg_lock);
  48
  49         clear = status & (OXYGEN_CHANNEL_A |
  50                           OXYGEN_CHANNEL_B |
  51                           OXYGEN_CHANNEL_C |
  52                           OXYGEN_CHANNEL_SPDIF |
  53                           OXYGEN_CHANNEL_MULTICH |
  54                           OXYGEN_CHANNEL_AC97 |
  55                           OXYGEN_INT_SPDIF_IN_CHANGE |
  56                           OXYGEN_INT_GPIO);
  57         if (clear) {
  58                 if (clear & OXYGEN_INT_SPDIF_IN_CHANGE)
  59                         chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_CHANGE;
  60                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  61                                chip->interrupt_mask & ~clear);
  62                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  63                                chip->interrupt_mask);
  64         }
  65
  66         elapsed_streams = status & chip->pcm_running;
  67
  68         spin_unlock(&chip->reg_lock);
  69
  70         for (i = 0; i < PCM_COUNT; ++i)
  71                 if ((elapsed_streams & (1 << i)) && chip->streams[i])
  72                         snd_pcm_period_elapsed(chip->streams[i]);
  73
  74         if (status & OXYGEN_INT_SPDIF_IN_CHANGE) {
  75                 spin_lock(&chip->reg_lock);
  76                 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
  77                 if (i & OXYGEN_SPDIF_IN_CHANGE) {
  78                         oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
  79                         schedule_work(&chip->spdif_input_bits_work);
  80                 }
  81                 spin_unlock(&chip->reg_lock);
  82         }
  83
  84         if (status & OXYGEN_INT_GPIO)
  85                 ;
  86
  87         if ((status & OXYGEN_INT_MIDI) && chip->midi)
  88                 snd_mpu401_uart_interrupt(0, chip->midi->private_data);
  89
  90         return IRQ_HANDLED;
  91 }
  92
  93 static void oxygen_spdif_input_bits_changed(struct work_struct *work)
  94 {
  95         struct oxygen *chip = container_of(work, struct oxygen,
  96                                            spdif_input_bits_work);
  97
  98         spin_lock_irq(&chip->reg_lock);
  99         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_IN_INVERT);
 100         spin_unlock_irq(&chip->reg_lock);
 101         msleep(1);
 102         if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
 103               & OXYGEN_SPDIF_IN_VALID)) {
 104                 spin_lock_irq(&chip->reg_lock);
 105                 oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL,
 106                                   OXYGEN_SPDIF_IN_INVERT);
 107                 spin_unlock_irq(&chip->reg_lock);
 108                 msleep(1);
 109                 if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
 110                       & OXYGEN_SPDIF_IN_VALID)) {
 111                         spin_lock_irq(&chip->reg_lock);
 112                         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 113                                             OXYGEN_SPDIF_IN_INVERT);
 114                         spin_unlock_irq(&chip->reg_lock);
 115                 }
 116         }
 117
 118         if (chip->spdif_input_bits_ctl) {
 119                 spin_lock_irq(&chip->reg_lock);
 120                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
 121                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
 122                                chip->interrupt_mask);
 123                 spin_unlock_irq(&chip->reg_lock);
 124
 125                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
 126                                &chip->spdif_input_bits_ctl->id);
 127         }
 128 }
 129
 130 #ifdef CONFIG_PROC_FS
 131 static void oxygen_proc_read(struct snd_info_entry *entry,
 132                              struct snd_info_buffer *buffer)
 133 {
 134         struct oxygen *chip = entry->private_data;
 135         int i, j;
 136
 137         snd_iprintf(buffer, "CMI8788\n\n");
 138         for (i = 0; i < 0x100; i += 0x10) {
 139                 snd_iprintf(buffer, "%02x:", i);
 140                 for (j = 0; j < 0x10; ++j)
 141                         snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
 142                 snd_iprintf(buffer, "\n");
 143         }
 144         if (mutex_lock_interruptible(&chip->mutex) < 0)
 145                 return;
 146         snd_iprintf(buffer, "\nAC97\n");
 147         for (i = 0; i < 0x80; i += 0x10) {
 148                 snd_iprintf(buffer, "%02x:", i);
 149                 for (j = 0; j < 0x10; j += 2)
 150                         snd_iprintf(buffer, " %04x",
 151                                     oxygen_read_ac97(chip, 0, i + j));
 152                 snd_iprintf(buffer, "\n");
 153         }
 154         mutex_unlock(&chip->mutex);
 155 }
 156
 157 static void __devinit oxygen_proc_init(struct oxygen *chip)
 158 {
 159         struct snd_info_entry *entry;
 160
 161         if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
 162                 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
 163 }
 164 #else
 165 #define oxygen_proc_init(chip)
 166 #endif
 167
 168 static void __devinit oxygen_init(struct oxygen *chip)
 169 {
 170         unsigned int i;
 171
 172         chip->dac_routing = 1;
 173         for (i = 0; i < 8; ++i)
 174                 chip->dac_volume[i] = 0xff;
 175         chip->spdif_playback_enable = 1;
 176         chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
 177                 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
 178         chip->spdif_pcm_bits = chip->spdif_bits;
 179
 180         if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
 181                 chip->revision = 2;
 182         else
 183                 chip->revision = 1;
 184
 185         if (chip->revision == 1)
 186                 oxygen_set_bits8(chip, OXYGEN_MISC, OXYGEN_MISC_MAGIC);
 187
 188         oxygen_set_bits8(chip, OXYGEN_FUNCTION,
 189                          OXYGEN_FUNCTION_RESET_CODEC |
 190                          OXYGEN_FUNCTION_ENABLE_SPI_4_5);
 191         oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 0x010a);
 192         oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 0x010a);
 193         oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 0x010a);
 194         oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 0x010a);
 195         oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_MAGIC2);
 196         oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
 197         oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0x6c00);
 198         oxygen_write8(chip, OXYGEN_REC_ROUTING, 0x10);
 199         oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0x00);
 200         oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 0xe4);
 201
 202         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 203         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 204
 205         oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0x00);
 206         oxygen_clear_bits16(chip, OXYGEN_AC97_OUT_CONFIG,
 207                             OXYGEN_AC97_OUT_MAGIC3);
 208         oxygen_set_bits16(chip, OXYGEN_AC97_IN_CONFIG,
 209                           OXYGEN_AC97_IN_MAGIC3);
 210         oxygen_write_ac97(chip, 0, AC97_RESET, 0);
 211         msleep(1);
 212         oxygen_ac97_set_bits(chip, 0, 0x70, 0x0300);
 213         oxygen_ac97_set_bits(chip, 0, 0x64, 0x8043);
 214         oxygen_ac97_set_bits(chip, 0, 0x62, 0x180f);
 215         oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
 216         oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
 217         oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
 218         oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
 219         oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
 220         oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
 221         oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
 222         oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
 223         oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
 224         oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
 225         oxygen_ac97_clear_bits(chip, 0, 0x72, 0x0001);
 226         /* power down unused ADCs and DACs */
 227         oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
 228                              AC97_PD_PR0 | AC97_PD_PR1);
 229         oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
 230                              AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
 231 }
 232
 233 static void oxygen_card_free(struct snd_card *card)
 234 {
 235         struct oxygen *chip = card->private_data;
 236
 237         spin_lock_irq(&chip->reg_lock);
 238         chip->interrupt_mask = 0;
 239         chip->pcm_running = 0;
 240         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 241         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 242         spin_unlock_irq(&chip->reg_lock);
 243         if (chip->irq >= 0) {
 244                 free_irq(chip->irq, chip);
 245                 synchronize_irq(chip->irq);
 246         }
 247         flush_scheduled_work();
 248         chip->model->cleanup(chip);
 249         mutex_destroy(&chip->mutex);
 250         pci_release_regions(chip->pci);
 251         pci_disable_device(chip->pci);
 252 }
 253
 254 int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
 255                                const struct oxygen_model *model)
 256 {
 257         struct snd_card *card;
 258         struct oxygen *chip;
 259         int err;
 260
 261         card = snd_card_new(index, id, model->owner, sizeof *chip);
 262         if (!card)
 263                 return -ENOMEM;
 264
 265         chip = card->private_data;
 266         chip->card = card;
 267         chip->pci = pci;
 268         chip->irq = -1;
 269         chip->model = model;
 270         spin_lock_init(&chip->reg_lock);
 271         mutex_init(&chip->mutex);
 272         INIT_WORK(&chip->spdif_input_bits_work,
 273                   oxygen_spdif_input_bits_changed);
 274
 275         err = pci_enable_device(pci);
 276         if (err < 0)
 277                 goto err_card;
 278
 279         err = pci_request_regions(pci, model->chip);
 280         if (err < 0) {
 281                 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
 282                 goto err_pci_enable;
 283         }
 284
 285         if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
 286             pci_resource_len(pci, 0) < 0x100) {
 287                 snd_printk(KERN_ERR "invalid PCI I/O range\n");
 288                 err = -ENXIO;
 289                 goto err_pci_regions;
 290         }
 291         chip->addr = pci_resource_start(pci, 0);
 292
 293         pci_set_master(pci);
 294         snd_card_set_dev(card, &pci->dev);
 295         card->private_free = oxygen_card_free;
 296
 297         oxygen_init(chip);
 298         model->init(chip);
 299
 300         err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
 301                           model->chip, chip);
 302         if (err < 0) {
 303                 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
 304                 goto err_card;
 305         }
 306         chip->irq = pci->irq;
 307
 308         strcpy(card->driver, model->chip);
 309         strcpy(card->shortname, model->shortname);
 310         sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
 311                 model->longname, chip->revision, chip->addr, chip->irq);
 312         strcpy(card->mixername, model->chip);
 313         snd_component_add(card, model->chip);
 314
 315         err = oxygen_pcm_init(chip);
 316         if (err < 0)
 317                 goto err_card;
 318
 319         err = oxygen_mixer_init(chip);
 320         if (err < 0)
 321                 goto err_card;
 322
 323         if (oxygen_read8(chip, OXYGEN_MISC) & OXYGEN_MISC_MIDI) {
 324                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
 325                                           chip->addr + OXYGEN_MPU401,
 326                                           MPU401_INFO_INTEGRATED, 0, 0,
 327                                           &chip->midi);
 328                 if (err < 0)
 329                         goto err_card;
 330         }
 331
 332         oxygen_proc_init(chip);
 333
 334         spin_lock_irq(&chip->reg_lock);
 335         chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
 336         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 337         spin_unlock_irq(&chip->reg_lock);
 338
 339         err = snd_card_register(card);
 340         if (err < 0)
 341                 goto err_card;
 342
 343         pci_set_drvdata(pci, card);
 344         return 0;
 345
 346 err_pci_regions:
 347         pci_release_regions(pci);
 348 err_pci_enable:
 349         pci_disable_device(pci);
 350 err_card:
 351         snd_card_free(card);
 352         return err;
 353 }
 354 EXPORT_SYMBOL(oxygen_pci_probe);
 355
 356 void __devexit oxygen_pci_remove(struct pci_dev *pci)
 357 {
 358         snd_card_free(pci_get_drvdata(pci));
 359         pci_set_drvdata(pci, NULL);
 360 }
 361 EXPORT_SYMBOL(oxygen_pci_remove);