/*
* 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 <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);
