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linux-next/sound/pci/oxygen/oxygen_lib.c
Clemens Ladisch dba8b46992 ALSA: mpu401: clean up interrupt specification 
The semantics of snd_mpu401_uart_new()'s interrupt parameters are
somewhat counterintuitive:  To prevent the function from allocating its
own interrupt, either the irq number must be invalid, or the irq_flags
parameter must be zero.  At the same time, the irq parameter being
invalid specifies that the mpu401 code has to work without an interrupt
allocated by the caller.  This implies that, if there is an interrupt
and it is allocated by the caller, the irq parameter must be set to
a valid-looking number which then isn't actually used.

With the removal of IRQF_DISABLED, zero becomes a valid irq_flags value,
which forces us to handle the parameters differently.

This patch introduces a new flag MPU401_INFO_IRQ_HOOK for when the
device interrupt is handled by the caller, and makes the allocation of
the interrupt to depend only on the irq parameter.  As suggested by
Takashi, the irq_flags parameter was dropped because, when used, it had
the constant value IRQF_DISABLED.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-09-14 11:00:51 +02:00

834 lines
25 KiB
C
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/*
* 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 <linux/slab.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"
#include "cm9780.h"
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_DESCRIPTION("C-Media CMI8788 helper library");
MODULE_LICENSE("GPL v2");
#define DRIVER "oxygen"
static inline int oxygen_uart_input_ready(struct oxygen *chip)
{
return !(oxygen_read8(chip, OXYGEN_MPU401 + 1) & MPU401_RX_EMPTY);
}
static void oxygen_read_uart(struct oxygen *chip)
{
if (unlikely(!oxygen_uart_input_ready(chip))) {
/* no data, but read it anyway to clear the interrupt */
oxygen_read8(chip, OXYGEN_MPU401);
return;
}
do {
u8 data = oxygen_read8(chip, OXYGEN_MPU401);
if (data == MPU401_ACK)
continue;
if (chip->uart_input_count >= ARRAY_SIZE(chip->uart_input))
chip->uart_input_count = 0;
chip->uart_input[chip->uart_input_count++] = data;
} while (oxygen_uart_input_ready(chip));
if (chip->model.uart_input)
chip->model.uart_input(chip);
}
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_DETECT |
OXYGEN_INT_GPIO |
OXYGEN_INT_AC97);
if (clear) {
if (clear & OXYGEN_INT_SPDIF_IN_DETECT)
chip->interrupt_mask &= ~OXYGEN_INT_SPDIF_IN_DETECT;
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_DETECT) {
spin_lock(&chip->reg_lock);
i = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
if (i & (OXYGEN_SPDIF_SENSE_INT | OXYGEN_SPDIF_LOCK_INT |
OXYGEN_SPDIF_RATE_INT)) {
/* write the interrupt bit(s) to clear */
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, i);
schedule_work(&chip->spdif_input_bits_work);
}
spin_unlock(&chip->reg_lock);
}
if (status & OXYGEN_INT_GPIO)
schedule_work(&chip->gpio_work);
if (status & OXYGEN_INT_MIDI) {
if (chip->midi)
snd_mpu401_uart_interrupt(0, chip->midi->private_data);
else
oxygen_read_uart(chip);
}
if (status & OXYGEN_INT_AC97)
wake_up(&chip->ac97_waitqueue);
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);
u32 reg;
/*
* This function gets called when there is new activity on the SPDIF
* input, or when we lose lock on the input signal, or when the rate
* changes.
*/
msleep(1);
spin_lock_irq(&chip->reg_lock);
reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
OXYGEN_SPDIF_LOCK_STATUS))
== OXYGEN_SPDIF_SENSE_STATUS) {
/*
* If we detect activity on the SPDIF input but cannot lock to
* a signal, the clock bit is likely to be wrong.
*/
reg ^= OXYGEN_SPDIF_IN_CLOCK_MASK;
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
spin_unlock_irq(&chip->reg_lock);
msleep(1);
spin_lock_irq(&chip->reg_lock);
reg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
if ((reg & (OXYGEN_SPDIF_SENSE_STATUS |
OXYGEN_SPDIF_LOCK_STATUS))
== OXYGEN_SPDIF_SENSE_STATUS) {
/* nothing detected with either clock; give up */
if ((reg & OXYGEN_SPDIF_IN_CLOCK_MASK)
== OXYGEN_SPDIF_IN_CLOCK_192) {
/*
* Reset clock to <= 96 kHz because this is
* more likely to be received next time.
*/
reg &= ~OXYGEN_SPDIF_IN_CLOCK_MASK;
reg |= OXYGEN_SPDIF_IN_CLOCK_96;
oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, reg);
}
}
}
spin_unlock_irq(&chip->reg_lock);
if (chip->controls[CONTROL_SPDIF_INPUT_BITS]) {
spin_lock_irq(&chip->reg_lock);
chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK,
chip->interrupt_mask);
spin_unlock_irq(&chip->reg_lock);
/*
* We don't actually know that any channel status bits have
* changed, but let's send a notification just to be sure.
*/
snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
&chip->controls[CONTROL_SPDIF_INPUT_BITS]->id);
}
}
static void oxygen_gpio_changed(struct work_struct *work)
{
struct oxygen *chip = container_of(work, struct oxygen, gpio_work);
if (chip->model.gpio_changed)
chip->model.gpio_changed(chip);
}
#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;
switch (oxygen_read8(chip, OXYGEN_REVISION) & OXYGEN_PACKAGE_ID_MASK) {
case OXYGEN_PACKAGE_ID_8786: i = '6'; break;
case OXYGEN_PACKAGE_ID_8787: i = '7'; break;
case OXYGEN_PACKAGE_ID_8788: i = '8'; break;
default: i = '?'; break;
}
snd_iprintf(buffer, "CMI878%c:\n", i);
for (i = 0; i < OXYGEN_IO_SIZE; 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;
if (chip->has_ac97_0) {
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");
}
}
if (chip->has_ac97_1) {
snd_iprintf(buffer, "\nAC97 2:\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, 1, i + j));
snd_iprintf(buffer, "\n");
}
}
mutex_unlock(&chip->mutex);
if (chip->model.dump_registers)
chip->model.dump_registers(chip, buffer);
}
static void oxygen_proc_init(struct oxygen *chip)
{
struct snd_info_entry *entry;
if (!snd_card_proc_new(chip->card, "oxygen", &entry))
snd_info_set_text_ops(entry, chip, oxygen_proc_read);
}
#else
#define oxygen_proc_init(chip)
#endif
static const struct pci_device_id *
oxygen_search_pci_id(struct oxygen *chip, const struct pci_device_id ids[])
{
u16 subdevice;
/*
* Make sure the EEPROM pins are available, i.e., not used for SPI.
* (This function is called before we initialize or use SPI.)
*/
oxygen_clear_bits8(chip, OXYGEN_FUNCTION,
OXYGEN_FUNCTION_ENABLE_SPI_4_5);
/*
* Read the subsystem device ID directly from the EEPROM, because the
* chip didn't if the first EEPROM word was overwritten.
*/
subdevice = oxygen_read_eeprom(chip, 2);
/* use default ID if EEPROM is missing */
if (subdevice == 0xffff && oxygen_read_eeprom(chip, 1) == 0xffff)
subdevice = 0x8788;
/*
* We use only the subsystem device ID for searching because it is
* unique even without the subsystem vendor ID, which may have been
* overwritten in the EEPROM.
*/
for (; ids->vendor; ++ids)
if (ids->subdevice == subdevice &&
ids->driver_data != BROKEN_EEPROM_DRIVER_DATA)
return ids;
return NULL;
}
static void oxygen_restore_eeprom(struct oxygen *chip,
const struct pci_device_id *id)
{
u16 eeprom_id;
eeprom_id = oxygen_read_eeprom(chip, 0);
if (eeprom_id != OXYGEN_EEPROM_ID &&
(eeprom_id != 0xffff || id->subdevice != 0x8788)) {
/*
* This function gets called only when a known card model has
* been detected, i.e., we know there is a valid subsystem
* product ID at index 2 in the EEPROM. Therefore, we have
* been able to deduce the correct subsystem vendor ID, and
* this is enough information to restore the original EEPROM
* contents.
*/
oxygen_write_eeprom(chip, 1, id->subvendor);
oxygen_write_eeprom(chip, 0, OXYGEN_EEPROM_ID);
oxygen_set_bits8(chip, OXYGEN_MISC,
OXYGEN_MISC_WRITE_PCI_SUBID);
pci_write_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID,
id->subvendor);
pci_write_config_word(chip->pci, PCI_SUBSYSTEM_ID,
id->subdevice);
oxygen_clear_bits8(chip, OXYGEN_MISC,
OXYGEN_MISC_WRITE_PCI_SUBID);
snd_printk(KERN_INFO "EEPROM ID restored\n");
}
}
static void configure_pcie_bridge(struct pci_dev *pci)
{
enum { PEX811X, PI7C9X110 };
static const struct pci_device_id bridge_ids[] = {
{ PCI_VDEVICE(PLX, 0x8111), .driver_data = PEX811X },
{ PCI_VDEVICE(PLX, 0x8112), .driver_data = PEX811X },
{ PCI_DEVICE(0x12d8, 0xe110), .driver_data = PI7C9X110 },
{ }
};
struct pci_dev *bridge;
const struct pci_device_id *id;
u32 tmp;
if (!pci->bus || !pci->bus->self)
return;
bridge = pci->bus->self;
id = pci_match_id(bridge_ids, bridge);
if (!id)
return;
switch (id->driver_data) {
case PEX811X: /* PLX PEX8111/PEX8112 PCIe/PCI bridge */
pci_read_config_dword(bridge, 0x48, &tmp);
tmp |= 1; /* enable blind prefetching */
tmp |= 1 << 11; /* enable beacon generation */
pci_write_config_dword(bridge, 0x48, tmp);
pci_write_config_dword(bridge, 0x84, 0x0c);
pci_read_config_dword(bridge, 0x88, &tmp);
tmp &= ~(7 << 27);
tmp |= 2 << 27; /* set prefetch size to 128 bytes */
pci_write_config_dword(bridge, 0x88, tmp);
break;
case PI7C9X110: /* Pericom PI7C9X110 PCIe/PCI bridge */
pci_read_config_dword(bridge, 0x40, &tmp);
tmp |= 1; /* park the PCI arbiter to the sound chip */
pci_write_config_dword(bridge, 0x40, tmp);
break;
}
}
static void oxygen_init(struct oxygen *chip)
{
unsigned int i;
chip->dac_routing = 1;
for (i = 0; i < 8; ++i)
chip->dac_volume[i] = chip->model.dac_volume_min;
chip->dac_mute = 1;
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))
oxygen_set_bits8(chip, OXYGEN_MISC,
OXYGEN_MISC_PCI_MEM_W_1_CLOCK);
i = oxygen_read16(chip, OXYGEN_AC97_CONTROL);
chip->has_ac97_0 = (i & OXYGEN_AC97_CODEC_0) != 0;
chip->has_ac97_1 = (i & OXYGEN_AC97_CODEC_1) != 0;
oxygen_write8_masked(chip, OXYGEN_FUNCTION,
OXYGEN_FUNCTION_RESET_CODEC |
chip->model.function_flags,
OXYGEN_FUNCTION_RESET_CODEC |
OXYGEN_FUNCTION_2WIRE_SPI_MASK |
OXYGEN_FUNCTION_ENABLE_SPI_4_5);
oxygen_write8(chip, OXYGEN_DMA_STATUS, 0);
oxygen_write8(chip, OXYGEN_DMA_PAUSE, 0);
oxygen_write8(chip, OXYGEN_PLAY_CHANNELS,
OXYGEN_PLAY_CHANNELS_2 |
OXYGEN_DMA_A_BURST_8 |
OXYGEN_DMA_MULTICH_BURST_8);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
oxygen_write8_masked(chip, OXYGEN_MISC,
chip->model.misc_flags,
OXYGEN_MISC_WRITE_PCI_SUBID |
OXYGEN_MISC_REC_C_FROM_SPDIF |
OXYGEN_MISC_REC_B_FROM_AC97 |
OXYGEN_MISC_REC_A_FROM_MULTICH |
OXYGEN_MISC_MIDI);
oxygen_write8(chip, OXYGEN_REC_FORMAT,
(OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_A_SHIFT) |
(OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_B_SHIFT) |
(OXYGEN_FORMAT_16 << OXYGEN_REC_FORMAT_C_SHIFT));
oxygen_write8(chip, OXYGEN_PLAY_FORMAT,
(OXYGEN_FORMAT_16 << OXYGEN_SPDIF_FORMAT_SHIFT) |
(OXYGEN_FORMAT_16 << OXYGEN_MULTICH_FORMAT_SHIFT));
oxygen_write8(chip, OXYGEN_REC_CHANNELS, OXYGEN_REC_CHANNELS_2_2_2);
oxygen_write16(chip, OXYGEN_I2S_MULTICH_FORMAT,
OXYGEN_RATE_48000 |
chip->model.dac_i2s_format |
OXYGEN_I2S_MCLK(chip->model.dac_mclks) |
OXYGEN_I2S_BITS_16 |
OXYGEN_I2S_MASTER |
OXYGEN_I2S_BCLK_64);
if (chip->model.device_config & CAPTURE_0_FROM_I2S_1)
oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
OXYGEN_RATE_48000 |
chip->model.adc_i2s_format |
OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
OXYGEN_I2S_BITS_16 |
OXYGEN_I2S_MASTER |
OXYGEN_I2S_BCLK_64);
else
oxygen_write16(chip, OXYGEN_I2S_A_FORMAT,
OXYGEN_I2S_MASTER |
OXYGEN_I2S_MUTE_MCLK);
if (chip->model.device_config & (CAPTURE_0_FROM_I2S_2 |
CAPTURE_2_FROM_I2S_2))
oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
OXYGEN_RATE_48000 |
chip->model.adc_i2s_format |
OXYGEN_I2S_MCLK(chip->model.adc_mclks) |
OXYGEN_I2S_BITS_16 |
OXYGEN_I2S_MASTER |
OXYGEN_I2S_BCLK_64);
else
oxygen_write16(chip, OXYGEN_I2S_B_FORMAT,
OXYGEN_I2S_MASTER |
OXYGEN_I2S_MUTE_MCLK);
oxygen_write16(chip, OXYGEN_I2S_C_FORMAT,
OXYGEN_I2S_MASTER |
OXYGEN_I2S_MUTE_MCLK);
oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
OXYGEN_SPDIF_OUT_ENABLE |
OXYGEN_SPDIF_LOOPBACK);
if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
OXYGEN_SPDIF_SENSE_MASK |
OXYGEN_SPDIF_LOCK_MASK |
OXYGEN_SPDIF_RATE_MASK |
OXYGEN_SPDIF_LOCK_PAR |
OXYGEN_SPDIF_IN_CLOCK_96,
OXYGEN_SPDIF_SENSE_MASK |
OXYGEN_SPDIF_LOCK_MASK |
OXYGEN_SPDIF_RATE_MASK |
OXYGEN_SPDIF_SENSE_PAR |
OXYGEN_SPDIF_LOCK_PAR |
OXYGEN_SPDIF_IN_CLOCK_MASK);
else
oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
OXYGEN_SPDIF_SENSE_MASK |
OXYGEN_SPDIF_LOCK_MASK |
OXYGEN_SPDIF_RATE_MASK);
oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS, chip->spdif_bits);
oxygen_write16(chip, OXYGEN_2WIRE_BUS_STATUS,
OXYGEN_2WIRE_LENGTH_8 |
OXYGEN_2WIRE_INTERRUPT_MASK |
OXYGEN_2WIRE_SPEED_STANDARD);
oxygen_clear_bits8(chip, OXYGEN_MPU401_CONTROL, OXYGEN_MPU401_LOOPBACK);
oxygen_write8(chip, OXYGEN_GPI_INTERRUPT_MASK, 0);
oxygen_write16(chip, OXYGEN_GPIO_INTERRUPT_MASK, 0);
oxygen_write16(chip, OXYGEN_PLAY_ROUTING,
OXYGEN_PLAY_MULTICH_I2S_DAC |
OXYGEN_PLAY_SPDIF_SPDIF |
(0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
(1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
(2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
(3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT));
oxygen_write8(chip, OXYGEN_REC_ROUTING,
OXYGEN_REC_A_ROUTE_I2S_ADC_1 |
OXYGEN_REC_B_ROUTE_I2S_ADC_2 |
OXYGEN_REC_C_ROUTE_SPDIF);
oxygen_write8(chip, OXYGEN_ADC_MONITOR, 0);
oxygen_write8(chip, OXYGEN_A_MONITOR_ROUTING,
(0 << OXYGEN_A_MONITOR_ROUTE_0_SHIFT) |
(1 << OXYGEN_A_MONITOR_ROUTE_1_SHIFT) |
(2 << OXYGEN_A_MONITOR_ROUTE_2_SHIFT) |
(3 << OXYGEN_A_MONITOR_ROUTE_3_SHIFT));
if (chip->has_ac97_0 | chip->has_ac97_1)
oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK,
OXYGEN_AC97_INT_READ_DONE |
OXYGEN_AC97_INT_WRITE_DONE);
else
oxygen_write8(chip, OXYGEN_AC97_INTERRUPT_MASK, 0);
oxygen_write32(chip, OXYGEN_AC97_OUT_CONFIG, 0);
oxygen_write32(chip, OXYGEN_AC97_IN_CONFIG, 0);
if (!(chip->has_ac97_0 | chip->has_ac97_1))
oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
OXYGEN_AC97_CLOCK_DISABLE);
if (!chip->has_ac97_0) {
oxygen_set_bits16(chip, OXYGEN_AC97_CONTROL,
OXYGEN_AC97_NO_CODEC_0);
} else {
oxygen_write_ac97(chip, 0, AC97_RESET, 0);
msleep(1);
oxygen_ac97_set_bits(chip, 0, CM9780_GPIO_SETUP,
CM9780_GPIO0IO | CM9780_GPIO1IO);
oxygen_ac97_set_bits(chip, 0, CM9780_MIXER,
CM9780_BSTSEL | CM9780_STRO_MIC |
CM9780_MIX2FR | CM9780_PCBSW);
oxygen_ac97_set_bits(chip, 0, CM9780_JACK,
CM9780_RSOE | CM9780_CBOE |
CM9780_SSOE | CM9780_FROE |
CM9780_MIC2MIC | CM9780_LI2LI);
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, CM9780_GPIO_STATUS,
CM9780_GPO0);
/* 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);
}
if (chip->has_ac97_1) {
oxygen_set_bits32(chip, OXYGEN_AC97_OUT_CONFIG,
OXYGEN_AC97_CODEC1_SLOT3 |
OXYGEN_AC97_CODEC1_SLOT4);
oxygen_write_ac97(chip, 1, AC97_RESET, 0);
msleep(1);
oxygen_write_ac97(chip, 1, AC97_MASTER, 0x0000);
oxygen_write_ac97(chip, 1, AC97_HEADPHONE, 0x8000);
oxygen_write_ac97(chip, 1, AC97_PC_BEEP, 0x8000);
oxygen_write_ac97(chip, 1, AC97_MIC, 0x8808);
oxygen_write_ac97(chip, 1, AC97_LINE, 0x8808);
oxygen_write_ac97(chip, 1, AC97_CD, 0x8808);
oxygen_write_ac97(chip, 1, AC97_VIDEO, 0x8808);
oxygen_write_ac97(chip, 1, AC97_AUX, 0x8808);
oxygen_write_ac97(chip, 1, AC97_PCM, 0x0808);
oxygen_write_ac97(chip, 1, AC97_REC_SEL, 0x0000);
oxygen_write_ac97(chip, 1, AC97_REC_GAIN, 0x0000);
oxygen_ac97_set_bits(chip, 1, 0x6a, 0x0040);
}
}
static void oxygen_shutdown(struct oxygen *chip)
{
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);
}
static void oxygen_card_free(struct snd_card *card)
{
struct oxygen *chip = card->private_data;
oxygen_shutdown(chip);
if (chip->irq >= 0)
free_irq(chip->irq, chip);
flush_work_sync(&chip->spdif_input_bits_work);
flush_work_sync(&chip->gpio_work);
chip->model.cleanup(chip);
kfree(chip->model_data);
mutex_destroy(&chip->mutex);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
}
int oxygen_pci_probe(struct pci_dev *pci, int index, char *id,
struct module *owner,
const struct pci_device_id *ids,
int (*get_model)(struct oxygen *chip,
const struct pci_device_id *id
)
)
{
struct snd_card *card;
struct oxygen *chip;
const struct pci_device_id *pci_id;
int err;
err = snd_card_create(index, id, owner, sizeof(*chip), &card);
if (err < 0)
return err;
chip = card->private_data;
chip->card = card;
chip->pci = pci;
chip->irq = -1;
spin_lock_init(&chip->reg_lock);
mutex_init(&chip->mutex);
INIT_WORK(&chip->spdif_input_bits_work,
oxygen_spdif_input_bits_changed);
INIT_WORK(&chip->gpio_work, oxygen_gpio_changed);
init_waitqueue_head(&chip->ac97_waitqueue);
err = pci_enable_device(pci);
if (err < 0)
goto err_card;
err = pci_request_regions(pci, DRIVER);
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) < OXYGEN_IO_SIZE) {
snd_printk(KERN_ERR "invalid PCI I/O range\n");
err = -ENXIO;
goto err_pci_regions;
}
chip->addr = pci_resource_start(pci, 0);
pci_id = oxygen_search_pci_id(chip, ids);
if (!pci_id) {
err = -ENODEV;
goto err_pci_regions;
}
oxygen_restore_eeprom(chip, pci_id);
err = get_model(chip, pci_id);
if (err < 0)
goto err_pci_regions;
if (chip->model.model_data_size) {
chip->model_data = kzalloc(chip->model.model_data_size,
GFP_KERNEL);
if (!chip->model_data) {
err = -ENOMEM;
goto err_pci_regions;
}
}
pci_set_master(pci);
snd_card_set_dev(card, &pci->dev);
card->private_free = oxygen_card_free;
configure_pcie_bridge(pci);
oxygen_init(chip);
chip->model.init(chip);
err = request_irq(pci->irq, oxygen_interrupt, IRQF_SHARED,
KBUILD_MODNAME, 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, chip->model.chip);
strcpy(card->shortname, chip->model.shortname);
sprintf(card->longname, "%s at %#lx, irq %i",
chip->model.longname, chip->addr, chip->irq);
strcpy(card->mixername, chip->model.chip);
snd_component_add(card, chip->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 (chip->model.device_config & (MIDI_OUTPUT | MIDI_INPUT)) {
unsigned int info_flags =
MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK;
if (chip->model.device_config & MIDI_OUTPUT)
info_flags |= MPU401_INFO_OUTPUT;
if (chip->model.device_config & MIDI_INPUT)
info_flags |= MPU401_INFO_INPUT;
err = snd_mpu401_uart_new(card, 0, MPU401_HW_CMIPCI,
chip->addr + OXYGEN_MPU401,
info_flags, -1, &chip->midi);
if (err < 0)
goto err_card;
}
oxygen_proc_init(chip);
spin_lock_irq(&chip->reg_lock);
if (chip->model.device_config & CAPTURE_1_FROM_SPDIF)
chip->interrupt_mask |= OXYGEN_INT_SPDIF_IN_DETECT;
if (chip->has_ac97_0 | chip->has_ac97_1)
chip->interrupt_mask |= OXYGEN_INT_AC97;
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 oxygen_pci_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
pci_set_drvdata(pci, NULL);
}
EXPORT_SYMBOL(oxygen_pci_remove);
#ifdef CONFIG_PM
int oxygen_pci_suspend(struct pci_dev *pci, pm_message_t state)
{
struct snd_card *card = pci_get_drvdata(pci);
struct oxygen *chip = card->private_data;
unsigned int i, saved_interrupt_mask;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
for (i = 0; i < PCM_COUNT; ++i)
if (chip->streams[i])
snd_pcm_suspend(chip->streams[i]);
if (chip->model.suspend)
chip->model.suspend(chip);
spin_lock_irq(&chip->reg_lock);
saved_interrupt_mask = chip->interrupt_mask;
chip->interrupt_mask = 0;
oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
spin_unlock_irq(&chip->reg_lock);
synchronize_irq(chip->irq);
flush_work_sync(&chip->spdif_input_bits_work);
flush_work_sync(&chip->gpio_work);
chip->interrupt_mask = saved_interrupt_mask;
pci_disable_device(pci);
pci_save_state(pci);
pci_set_power_state(pci, pci_choose_state(pci, state));
return 0;
}
EXPORT_SYMBOL(oxygen_pci_suspend);
static const u32 registers_to_restore[OXYGEN_IO_SIZE / 32] = {
0xffffffff, 0x00ff077f, 0x00011d08, 0x007f00ff,
0x00300000, 0x00000fe4, 0x0ff7001f, 0x00000000
};
static const u32 ac97_registers_to_restore[2][0x40 / 32] = {
{ 0x18284fa2, 0x03060000 },
{ 0x00007fa6, 0x00200000 }
};
static inline int is_bit_set(const u32 *bitmap, unsigned int bit)
{
return bitmap[bit / 32] & (1 << (bit & 31));
}
static void oxygen_restore_ac97(struct oxygen *chip, unsigned int codec)
{
unsigned int i;
oxygen_write_ac97(chip, codec, AC97_RESET, 0);
msleep(1);
for (i = 1; i < 0x40; ++i)
if (is_bit_set(ac97_registers_to_restore[codec], i))
oxygen_write_ac97(chip, codec, i * 2,
chip->saved_ac97_registers[codec][i]);
}
int oxygen_pci_resume(struct pci_dev *pci)
{
struct snd_card *card = pci_get_drvdata(pci);
struct oxygen *chip = card->private_data;
unsigned int i;
pci_set_power_state(pci, PCI_D0);
pci_restore_state(pci);
if (pci_enable_device(pci) < 0) {
snd_printk(KERN_ERR "cannot reenable device");
snd_card_disconnect(card);
return -EIO;
}
pci_set_master(pci);
oxygen_write16(chip, OXYGEN_DMA_STATUS, 0);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, 0);
for (i = 0; i < OXYGEN_IO_SIZE; ++i)
if (is_bit_set(registers_to_restore, i))
oxygen_write8(chip, i, chip->saved_registers._8[i]);
if (chip->has_ac97_0)
oxygen_restore_ac97(chip, 0);
if (chip->has_ac97_1)
oxygen_restore_ac97(chip, 1);
if (chip->model.resume)
chip->model.resume(chip);
oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
return 0;
}
EXPORT_SYMBOL(oxygen_pci_resume);
#endif /* CONFIG_PM */
void oxygen_pci_shutdown(struct pci_dev *pci)
{
struct snd_card *card = pci_get_drvdata(pci);
struct oxygen *chip = card->private_data;
oxygen_shutdown(chip);
chip->model.cleanup(chip);
}
EXPORT_SYMBOL(oxygen_pci_shutdown);
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