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 <linux/delay.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/mutex.h>
  23 #include <linux/pci.h>
  24 #include <sound/ac97_codec.h>
  25 #include <sound/asoundef.h>
  26 #include <sound/core.h>
  27 #include <sound/info.h>
  28 #include <sound/mpu401.h>
  29 #include <sound/pcm.h>
  30 #include "oxygen.h"
  31
  32 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
  33 MODULE_DESCRIPTION("C-Media CMI8788 helper library");
  34 MODULE_LICENSE("GPL");
  35
  36
  37 static irqreturn_t oxygen_interrupt(int dummy, void *dev_id)
  38 {
  39         struct oxygen *chip = dev_id;
  40         unsigned int status, clear, elapsed_streams, i;
  41
  42         status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS);
  43         if (!status)
  44                 return IRQ_NONE;
  45
  46         spin_lock(&chip->reg_lock);
  47
  48         clear = status & (OXYGEN_CHANNEL_A |
  49                           OXYGEN_CHANNEL_B |
  50                           OXYGEN_CHANNEL_C |
  51                           OXYGEN_CHANNEL_SPDIF |
  52                           OXYGEN_CHANNEL_MULTICH |
  53                           OXYGEN_CHANNEL_AC97 |
  54                           OXYGEN_INT_SPDIF_IN_CHANGE |
  55                           OXYGEN_INT_GPIO);
  56         if (clear) {
  57                 if (clear & OXYGEN_INT_SPDIF_IN_CHANGE)
  58                         chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_CHANGE;
  59                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  60                                chip->interrupt_mask & ~clear);
  61                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
  62                                chip->interrupt_mask);
  63         }
  64
  65         elapsed_streams = status & chip->pcm_running;
  66
  67         spin_unlock(&chip->reg_lock);
  68
  69         for (i = 0; i < PCM_COUNT; ++i)
  70                 if ((elapsed_streams & (1 << i)) && chip->streams[i])
  71                         snd_pcm_period_elapsed(chip->streams[i]);
  72
  73         if (status & OXYGEN_INT_SPDIF_IN_CHANGE) {
  74                 spin_lock(&chip->reg_lock);
  75                 i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
  76                 if (i & OXYGEN_SPDIF_IN_CHANGE) {
  77                         oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
  78                         schedule_work(&chip->spdif_input_bits_work);
  79                 }
  80                 spin_unlock(&chip->reg_lock);
  81         }
  82
  83         if (status & OXYGEN_INT_GPIO)
  84                 ;
  85
  86         if ((status & OXYGEN_INT_MIDI) && chip->midi)
  87                 snd_mpu401_uart_interrupt(0, chip->midi->private_data);
  88
  89         return IRQ_HANDLED;
  90 }
  91
  92 static void oxygen_spdif_input_bits_changed(struct work_struct *work)
  93 {
  94         struct oxygen *chip = container_of(work, struct oxygen,
  95                                            spdif_input_bits_work);
  96
  97         spin_lock_irq(&chip->reg_lock);
  98         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_IN_INVERT);
  99         spin_unlock_irq(&chip->reg_lock);
 100         msleep(1);
 101         if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
 102               & OXYGEN_SPDIF_IN_VALID)) {
 103                 spin_lock_irq(&chip->reg_lock);
 104                 oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL,
 105                                   OXYGEN_SPDIF_IN_INVERT);
 106                 spin_unlock_irq(&chip->reg_lock);
 107                 msleep(1);
 108                 if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
 109                       & OXYGEN_SPDIF_IN_VALID)) {
 110                         spin_lock_irq(&chip->reg_lock);
 111                         oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
 112                                             OXYGEN_SPDIF_IN_INVERT);
 113                         spin_unlock_irq(&chip->reg_lock);
 114                 }
 115         }
 116
 117         if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
 118                 spin_lock_irq(&chip->reg_lock);
 119                 chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
 120                 oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
 121                                chip->interrupt_mask);
 122                 spin_unlock_irq(&chip->reg_lock);
 123
 124                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
 125                                &chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
 126         }
 127 }
 128
 129 #ifdef CONFIG_PROC_FS
 130 static void oxygen_proc_read(struct snd_info_entry *entry,
 131                              struct snd_info_buffer *buffer)
 132 {
 133         struct oxygen *chip = entry->private_data;
 134         int i, j;
 135
 136         snd_iprintf(buffer, "CMI8788\n\n");
 137         for (i = 0; i < 0x100; i += 0x10) {
 138                 snd_iprintf(buffer, "%02x:", i);
 139                 for (j = 0; j < 0x10; ++j)
 140                         snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j));
 141                 snd_iprintf(buffer, "\n");
 142         }
 143         if (mutex_lock_interruptible(&chip->mutex) < 0)
 144                 return;
 145         snd_iprintf(buffer, "\nAC97\n");
 146         for (i = 0; i < 0x80; i += 0x10) {
 147                 snd_iprintf(buffer, "%02x:", i);
 148                 for (j = 0; j < 0x10; j += 2)
 149                         snd_iprintf(buffer, " %04x",
 150                                     oxygen_read_ac97(chip, 0, i + j));
 151                 snd_iprintf(buffer, "\n");
 152         }
 153         mutex_unlock(&chip->mutex);
 154 }
 155
 156 static void __devinit oxygen_proc_init(struct oxygen *chip)
 157 {
 158         struct snd_info_entry *entry;
 159
 160         if (!snd_card_proc_new(chip->card, "cmi8788", &entry))
 161                 snd_info_set_text_ops(entry, chip, oxygen_proc_read);
 162 }
 163 #else
 164 #define oxygen_proc_init(chip)
 165 #endif
 166
 167 static void __devinit oxygen_init(struct oxygen *chip)
 168 {
 169         unsigned int i;
 170
 171         chip->dac_routing = 1;
 172         for (i = 0; i < 8; ++i)
 173                 chip->dac_volume[i] = 0xff;
 174         chip->spdif_playback_enable = 1;
 175         chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
 176                 (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
 177         chip->spdif_pcm_bits = chip->spdif_bits;
 178
 179         if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2)
 180                 chip->revision = 2;
 181         else
 182                 chip->revision = 1;
 183
 184         if (chip->revision == 1)
 185                 oxygen_set_bits8(chip, OXYGEN_MISC, OXYGEN_MISC_MAGIC);
 186
 187         oxygen_set_bits8(chip, OXYGEN_FUNCTION,
 188                          OXYGEN_FUNCTION_RESET_CODEC |
 189                          OXYGEN_FUNCTION_ENABLE_SPI_4_5);
 190         oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 0x010a);
 191         oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 0x010a);
 192         oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 0x010a);
 193         oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 0x010a);
 194         oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_MAGIC2);
 195         oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
 196         oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0xe100);
 197         oxygen_write8(chip, OXYGEN_REC_ROUTING, 0x10);
 198         oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0x00);
 199         oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 0xe4);
 200
 201         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 202         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 203
 204         oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0x00);
 205         oxygen_clear_bits16(chip, OXYGEN_AC97_OUT_CONFIG,
 206                             OXYGEN_AC97_OUT_MAGIC3);
 207         oxygen_set_bits16(chip, OXYGEN_AC97_IN_CONFIG,
 208                           OXYGEN_AC97_IN_MAGIC3);
 209         oxygen_write_ac97(chip, 0, AC97_RESET, 0);
 210         msleep(1);
 211         oxygen_ac97_set_bits(chip, 0, 0x70, 0x0300);
 212         oxygen_ac97_set_bits(chip, 0, 0x64, 0x8043);
 213         oxygen_ac97_set_bits(chip, 0, 0x62, 0x180f);
 214         oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000);
 215         oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000);
 216         oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808);
 217         oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808);
 218         oxygen_write_ac97(chip, 0, AC97_CD, 0x8808);
 219         oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808);
 220         oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808);
 221         oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000);
 222         oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080);
 223         oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080);
 224         oxygen_ac97_clear_bits(chip, 0, 0x72, 0x0001);
 225         /* power down unused ADCs and DACs */
 226         oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN,
 227                              AC97_PD_PR0 | AC97_PD_PR1);
 228         oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS,
 229                              AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK);
 230 }
 231
 232 static void oxygen_card_free(struct snd_card *card)
 233 {
 234         struct oxygen *chip = card->private_data;
 235
 236         spin_lock_irq(&chip->reg_lock);
 237         chip->interrupt_mask = 0;
 238         chip->pcm_running = 0;
 239         oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
 240         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
 241         spin_unlock_irq(&chip->reg_lock);
 242         if (chip->irq >= 0) {
 243                 free_irq(chip->irq, chip);
 244                 synchronize_irq(chip->irq);
 245         }
 246         flush_scheduled_work();
 247         chip->model->cleanup(chip);
 248         mutex_destroy(&chip->mutex);
 249         pci_release_regions(chip->pci);
 250         pci_disable_device(chip->pci);
 251 }
 252
 253 int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
 254                                const struct oxygen_model *model)
 255 {
 256         struct snd_card *card;
 257         struct oxygen *chip;
 258         int err;
 259
 260         card = snd_card_new(index, id, model->owner, sizeof *chip);
 261         if (!card)
 262                 return -ENOMEM;
 263
 264         chip = card->private_data;
 265         chip->card = card;
 266         chip->pci = pci;
 267         chip->irq = -1;
 268         chip->model = model;
 269         spin_lock_init(&chip->reg_lock);
 270         mutex_init(&chip->mutex);
 271         INIT_WORK(&chip->spdif_input_bits_work,
 272                   oxygen_spdif_input_bits_changed);
 273
 274         err = pci_enable_device(pci);
 275         if (err < 0)
 276                 goto err_card;
 277
 278         err = pci_request_regions(pci, model->chip);
 279         if (err < 0) {
 280                 snd_printk(KERN_ERR "cannot reserve PCI resources\n");
 281                 goto err_pci_enable;
 282         }
 283
 284         if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) ||
 285             pci_resource_len(pci, 0) < 0x100) {
 286                 snd_printk(KERN_ERR "invalid PCI I/O range\n");
 287                 err = -ENXIO;
 288                 goto err_pci_regions;
 289         }
 290         chip->addr = pci_resource_start(pci, 0);
 291
 292         pci_set_master(pci);
 293         snd_card_set_dev(card, &pci->dev);
 294         card->private_free = oxygen_card_free;
 295
 296         oxygen_init(chip);
 297         model->init(chip);
 298
 299         err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
 300                           model->chip, chip);
 301         if (err < 0) {
 302                 snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq);
 303                 goto err_card;
 304         }
 305         chip->irq = pci->irq;
 306
 307         strcpy(card->driver, model->chip);
 308         strcpy(card->shortname, model->shortname);
 309         sprintf(card->longname, "%s (rev %u) at %#lx, irq %i",
 310                 model->longname, chip->revision, chip->addr, chip->irq);
 311         strcpy(card->mixername, model->chip);
 312         snd_component_add(card, model->chip);
 313
 314         err = oxygen_pcm_init(chip);
 315         if (err < 0)
 316                 goto err_card;
 317
 318         err = oxygen_mixer_init(chip);
 319         if (err < 0)
 320                 goto err_card;
 321
 322         if (oxygen_read8(chip, OXYGEN_MISC) & OXYGEN_MISC_MIDI) {
 323                 err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
 324                                           chip->addr + OXYGEN_MPU401,
 325                                           MPU401_INFO_INTEGRATED, 0, 0,
 326                                           &chip->midi);
 327                 if (err < 0)
 328                         goto err_card;
 329         }
 330
 331         oxygen_proc_init(chip);
 332
 333         spin_lock_irq(&chip->reg_lock);
 334         chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE;
 335         oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
 336         spin_unlock_irq(&chip->reg_lock);
 337
 338         err = snd_card_register(card);
 339         if (err < 0)
 340                 goto err_card;
 341
 342         pci_set_drvdata(pci, card);
 343         return 0;
 344
 345 err_pci_regions:
 346         pci_release_regions(pci);
 347 err_pci_enable:
 348         pci_disable_device(pci);
 349 err_card:
 350         snd_card_free(card);
 351         return err;
 352 }
 353 EXPORT_SYMBOL(oxygen_pci_probe);
 354
 355 void __devexit oxygen_pci_remove(struct pci_dev *pci)
 356 {
 357         snd_card_free(pci_get_drvdata(pci));
 358         pci_set_drvdata(pci, NULL);
 359 }
 360 EXPORT_SYMBOL(oxygen_pci_remove);