diff options
Diffstat (limited to 'sound/pci/oxygen/oxygen_lib.c')
| -rw-r--r-- | sound/pci/oxygen/oxygen_lib.c | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c new file mode 100644 index 000000000000..6180cc858e60 --- /dev/null +++ b/sound/pci/oxygen/oxygen_lib.c @@ -0,0 +1,361 @@ +/* + * C-Media CMI8788 driver - main driver module + * + * Copyright (c) Clemens Ladisch <clemens@ladisch.de> + * + * + * This driver is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2. + * + * This driver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this driver; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <sound/driver.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/mutex.h> +#include <linux/pci.h> +#include <sound/ac97_codec.h> +#include <sound/asoundef.h> +#include <sound/core.h> +#include <sound/info.h> +#include <sound/mpu401.h> +#include <sound/pcm.h> +#include "oxygen.h" + +MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); +MODULE_DESCRIPTION("C-Media CMI8788 helper library"); +MODULE_LICENSE("GPL"); + + +static irqreturn_t oxygen_interrupt(int dummy, void *dev_id) +{ + struct oxygen *chip = dev_id; + unsigned int status, clear, elapsed_streams, i; + + status = oxygen_read16(chip, OXYGEN_INTERRUPT_STATUS); + if (!status) + return IRQ_NONE; + + spin_lock(&chip->reg_lock); + + clear = status & (OXYGEN_CHANNEL_A | + OXYGEN_CHANNEL_B | + OXYGEN_CHANNEL_C | + OXYGEN_CHANNEL_SPDIF | + OXYGEN_CHANNEL_MULTICH | + OXYGEN_CHANNEL_AC97 | + OXYGEN_INT_SPDIF_IN_CHANGE | + OXYGEN_INT_GPIO); + if (clear) { + if (clear & OXYGEN_INT_SPDIF_IN_CHANGE) + chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_CHANGE; + oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, + chip->interrupt_mask & ~clear); + oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, + chip->interrupt_mask); + } + + elapsed_streams = status & chip->pcm_running; + + spin_unlock(&chip->reg_lock); + + for (i = 0; i < PCM_COUNT; ++i) + if ((elapsed_streams & (1 << i)) && chip->streams[i]) + snd_pcm_period_elapsed(chip->streams[i]); + + if (status & OXYGEN_INT_SPDIF_IN_CHANGE) { + spin_lock(&chip->reg_lock); + i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL); + if (i & OXYGEN_SPDIF_IN_CHANGE) { + oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i); + schedule_work(&chip->spdif_input_bits_work); + } + spin_unlock(&chip->reg_lock); + } + + if (status & OXYGEN_INT_GPIO) + ; + + if ((status & OXYGEN_INT_MIDI) && chip->midi) + snd_mpu401_uart_interrupt(0, chip->midi->private_data); + + return IRQ_HANDLED; +} + +static void oxygen_spdif_input_bits_changed(struct work_struct *work) +{ + struct oxygen *chip = container_of(work, struct oxygen, + spdif_input_bits_work); + + spin_lock_irq(&chip->reg_lock); + oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_IN_INVERT); + spin_unlock_irq(&chip->reg_lock); + msleep(1); + if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL) + & OXYGEN_SPDIF_IN_VALID)) { + spin_lock_irq(&chip->reg_lock); + oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, + OXYGEN_SPDIF_IN_INVERT); + spin_unlock_irq(&chip->reg_lock); + msleep(1); + if (!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL) + & OXYGEN_SPDIF_IN_VALID)) { + spin_lock_irq(&chip->reg_lock); + oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL, + OXYGEN_SPDIF_IN_INVERT); + spin_unlock_irq(&chip->reg_lock); + } + } + + if (chip->spdif_input_bits_ctl) { + spin_lock_irq(&chip->reg_lock); + chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE; + oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, + chip->interrupt_mask); + spin_unlock_irq(&chip->reg_lock); + + snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, + &chip->spdif_input_bits_ctl->id); + } +} + +#ifdef CONFIG_PROC_FS +static void oxygen_proc_read(struct snd_info_entry *entry, + struct snd_info_buffer *buffer) +{ + struct oxygen *chip = entry->private_data; + int i, j; + + snd_iprintf(buffer, "CMI8788\n\n"); + for (i = 0; i < 0x100; i += 0x10) { + snd_iprintf(buffer, "%02x:", i); + for (j = 0; j < 0x10; ++j) + snd_iprintf(buffer, " %02x", oxygen_read8(chip, i + j)); + snd_iprintf(buffer, "\n"); + } + if (mutex_lock_interruptible(&chip->mutex) < 0) + return; + snd_iprintf(buffer, "\nAC97\n"); + for (i = 0; i < 0x80; i += 0x10) { + snd_iprintf(buffer, "%02x:", i); + for (j = 0; j < 0x10; j += 2) + snd_iprintf(buffer, " %04x", + oxygen_read_ac97(chip, 0, i + j)); + snd_iprintf(buffer, "\n"); + } + mutex_unlock(&chip->mutex); +} + +static void __devinit oxygen_proc_init(struct oxygen *chip) +{ + struct snd_info_entry *entry; + + if (!snd_card_proc_new(chip->card, "cmi8788", &entry)) + snd_info_set_text_ops(entry, chip, oxygen_proc_read); +} +#else +#define oxygen_proc_init(chip) +#endif + +static void __devinit oxygen_init(struct oxygen *chip) +{ + unsigned int i; + + chip->dac_routing = 1; + for (i = 0; i < 8; ++i) + chip->dac_volume[i] = 0xff; + chip->spdif_playback_enable = 1; + chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL | + (IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT); + chip->spdif_pcm_bits = chip->spdif_bits; + + if (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_REVISION_2) + chip->revision = 2; + else + chip->revision = 1; + + if (chip->revision == 1) + oxygen_set_bits8(chip, OXYGEN_MISC, OXYGEN_MISC_MAGIC); + + oxygen_set_bits8(chip, OXYGEN_FUNCTION, + OXYGEN_FUNCTION_RESET_CODEC | + OXYGEN_FUNCTION_ENABLE_SPI_4_5); + oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT, 0x010a); + oxygen_write16(chip, OXYGEN_I2S_A_FORMAT, 0x010a); + oxygen_write16(chip, OXYGEN_I2S_B_FORMAT, 0x010a); + oxygen_write16(chip, OXYGEN_I2S_C_FORMAT, 0x010a); + oxygen_set_bits32(chip, OXYGEN_SPDIF_CONTROL, OXYGEN_SPDIF_MAGIC2); + oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits); + oxygen_write16(chip, OXYGEN_PLAY_ROUTING, 0x6c00); + oxygen_write8(chip, OXYGEN_REC_ROUTING, 0x10); + oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0x00); + oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING, 0xe4); + + oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); + oxygen_write16(chip, OXYGEN_DMA_STATUS, 0); + + oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0x00); + oxygen_clear_bits16(chip, OXYGEN_AC97_OUT_CONFIG, + OXYGEN_AC97_OUT_MAGIC3); + oxygen_set_bits16(chip, OXYGEN_AC97_IN_CONFIG, + OXYGEN_AC97_IN_MAGIC3); + oxygen_write_ac97(chip, 0, AC97_RESET, 0); + msleep(1); + oxygen_ac97_set_bits(chip, 0, 0x70, 0x0300); + oxygen_ac97_set_bits(chip, 0, 0x64, 0x8043); + oxygen_ac97_set_bits(chip, 0, 0x62, 0x180f); + oxygen_write_ac97(chip, 0, AC97_MASTER, 0x0000); + oxygen_write_ac97(chip, 0, AC97_PC_BEEP, 0x8000); + oxygen_write_ac97(chip, 0, AC97_MIC, 0x8808); + oxygen_write_ac97(chip, 0, AC97_LINE, 0x0808); + oxygen_write_ac97(chip, 0, AC97_CD, 0x8808); + oxygen_write_ac97(chip, 0, AC97_VIDEO, 0x8808); + oxygen_write_ac97(chip, 0, AC97_AUX, 0x8808); + oxygen_write_ac97(chip, 0, AC97_REC_GAIN, 0x8000); + oxygen_write_ac97(chip, 0, AC97_CENTER_LFE_MASTER, 0x8080); + oxygen_write_ac97(chip, 0, AC97_SURROUND_MASTER, 0x8080); + oxygen_ac97_clear_bits(chip, 0, 0x72, 0x0001); + /* power down unused ADCs and DACs */ + oxygen_ac97_set_bits(chip, 0, AC97_POWERDOWN, + AC97_PD_PR0 | AC97_PD_PR1); + oxygen_ac97_set_bits(chip, 0, AC97_EXTENDED_STATUS, + AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK); +} + +static void oxygen_card_free(struct snd_card *card) +{ + struct oxygen *chip = card->private_data; + + spin_lock_irq(&chip->reg_lock); + chip->interrupt_mask = 0; + chip->pcm_running = 0; + oxygen_write16(chip, OXYGEN_DMA_STATUS, 0); + oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0); + spin_unlock_irq(&chip->reg_lock); + if (chip->irq >= 0) { + free_irq(chip->irq, chip); + synchronize_irq(chip->irq); + } + flush_scheduled_work(); + chip->model->cleanup(chip); + mutex_destroy(&chip->mutex); + pci_release_regions(chip->pci); + pci_disable_device(chip->pci); +} + +int __devinit oxygen_pci_probe(struct pci_dev *pci, int index, char *id, + const struct oxygen_model *model) +{ + struct snd_card *card; + struct oxygen *chip; + int err; + + card = snd_card_new(index, id, model->owner, sizeof *chip); + if (!card) + return -ENOMEM; + + chip = card->private_data; + chip->card = card; + chip->pci = pci; + chip->irq = -1; + chip->model = model; + spin_lock_init(&chip->reg_lock); + mutex_init(&chip->mutex); + INIT_WORK(&chip->spdif_input_bits_work, + oxygen_spdif_input_bits_changed); + + err = pci_enable_device(pci); + if (err < 0) + goto err_card; + + err = pci_request_regions(pci, model->chip); + if (err < 0) { + snd_printk(KERN_ERR "cannot reserve PCI resources\n"); + goto err_pci_enable; + } + + if (!(pci_resource_flags(pci, 0) & IORESOURCE_IO) || + pci_resource_len(pci, 0) < 0x100) { + snd_printk(KERN_ERR "invalid PCI I/O range\n"); + err = -ENXIO; + goto err_pci_regions; + } + chip->addr = pci_resource_start(pci, 0); + + pci_set_master(pci); + snd_card_set_dev(card, &pci->dev); + card->private_free = oxygen_card_free; + + oxygen_init(chip); + model->init(chip); + + err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED, + model->chip, chip); + if (err < 0) { + snd_printk(KERN_ERR "cannot grab interrupt %d\n", pci->irq); + goto err_card; + } + chip->irq = pci->irq; + + strcpy(card->driver, model->chip); + strcpy(card->shortname, model->shortname); + sprintf(card->longname, "%s (rev %u) at %#lx, irq %i", + model->longname, chip->revision, chip->addr, chip->irq); + strcpy(card->mixername, model->chip); + snd_component_add(card, model->chip); + + err = oxygen_pcm_init(chip); + if (err < 0) + goto err_card; + + err = oxygen_mixer_init(chip); + if (err < 0) + goto err_card; + + if (oxygen_read8(chip, OXYGEN_MISC) & OXYGEN_MISC_MIDI) { + err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI, + chip->addr + OXYGEN_MPU401, + MPU401_INFO_INTEGRATED, 0, 0, + &chip->midi); + if (err < 0) + goto err_card; + } + + oxygen_proc_init(chip); + + spin_lock_irq(&chip->reg_lock); + chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_CHANGE; + oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask); + spin_unlock_irq(&chip->reg_lock); + + err = snd_card_register(card); + if (err < 0) + goto err_card; + + pci_set_drvdata(pci, card); + return 0; + +err_pci_regions: + pci_release_regions(pci); +err_pci_enable: + pci_disable_device(pci); +err_card: + snd_card_free(card); + return err; +} +EXPORT_SYMBOL(oxygen_pci_probe); + +void __devexit oxygen_pci_remove(struct pci_dev *pci) +{ + snd_card_free(pci_get_drvdata(pci)); + pci_set_drvdata(pci, NULL); +} +EXPORT_SYMBOL(oxygen_pci_remove); |