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linux/sound/pci/oxygen/hifier.c
Clemens Ladisch 30459d7b18 sound: oxygen: handle cards with broken EEPROM 
Under as yet unknown circumstances, the first word of the sound card's
EEPROM gets overwritten.  When this has happened, we cannot rely on the
subsystem IDs that the kernel reads from the PCI configuration
registers.  Instead, we read the IDs directly from the EEPROM and do the
ID matching manually.

Because the model-specific driver cannot determine the model before
calling oxygen_pci_probe(), that function now gets a get_model()
callback as parameter.  The customizing of the model structure, which
was formerly done by the probe() callback, also has moved into
get_model().

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-02-19 10:22:25 +01:00

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/*
* C-Media CMI8788 driver for the MediaTek/TempoTec HiFier Fantasia
*
* 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/pci.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/tlv.h>
#include "oxygen.h"
#include "ak4396.h"
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_DESCRIPTION("TempoTec HiFier driver");
MODULE_LICENSE("GPL v2");
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "card index");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "enable card");
static struct pci_device_id hifier_ids[] __devinitdata = {
{ OXYGEN_PCI_SUBID(0x14c3, 0x1710) },
{ OXYGEN_PCI_SUBID(0x14c3, 0x1711) },
{ OXYGEN_PCI_SUBID_BROKEN_EEPROM },
{ }
};
MODULE_DEVICE_TABLE(pci, hifier_ids);
struct hifier_data {
u8 ak4396_ctl2;
};
static void ak4396_write(struct oxygen *chip, u8 reg, u8 value)
{
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
OXYGEN_SPI_DATA_LENGTH_2 |
OXYGEN_SPI_CLOCK_160 |
(0 << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
AK4396_WRITE | (reg << 8) | value);
}
static void update_ak4396_volume(struct oxygen *chip)
{
ak4396_write(chip, AK4396_LCH_ATT, chip->dac_volume[0]);
ak4396_write(chip, AK4396_RCH_ATT, chip->dac_volume[1]);
}
static void hifier_registers_init(struct oxygen *chip)
{
struct hifier_data *data = chip->model_data;
ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
ak4396_write(chip, AK4396_CONTROL_2, data->ak4396_ctl2);
ak4396_write(chip, AK4396_CONTROL_3, AK4396_PCM);
update_ak4396_volume(chip);
}
static void hifier_init(struct oxygen *chip)
{
struct hifier_data *data = chip->model_data;
data->ak4396_ctl2 = AK4396_SMUTE | AK4396_DEM_OFF | AK4396_DFS_NORMAL;
hifier_registers_init(chip);
snd_component_add(chip->card, "AK4396");
snd_component_add(chip->card, "CS5340");
}
static void hifier_cleanup(struct oxygen *chip)
{
}
static void hifier_resume(struct oxygen *chip)
{
hifier_registers_init(chip);
}
static void set_ak4396_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
struct hifier_data *data = chip->model_data;
u8 value;
value = data->ak4396_ctl2 & ~AK4396_DFS_MASK;
if (params_rate(params) <= 54000)
value |= AK4396_DFS_NORMAL;
else if (params_rate(params) <= 108000)
value |= AK4396_DFS_DOUBLE;
else
value |= AK4396_DFS_QUAD;
data->ak4396_ctl2 = value;
msleep(1); /* wait for the new MCLK to become stable */
ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB);
ak4396_write(chip, AK4396_CONTROL_2, value);
ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
}
static void update_ak4396_mute(struct oxygen *chip)
{
struct hifier_data *data = chip->model_data;
u8 value;
value = data->ak4396_ctl2 & ~AK4396_SMUTE;
if (chip->dac_mute)
value |= AK4396_SMUTE;
data->ak4396_ctl2 = value;
ak4396_write(chip, AK4396_CONTROL_2, value);
}
static void set_cs5340_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
}
static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
static int hifier_control_filter(struct snd_kcontrol_new *template)
{
if (!strcmp(template->name, "Stereo Upmixing"))
return 1; /* stereo only - we don't need upmixing */
return 0;
}
static const struct oxygen_model model_hifier = {
.shortname = "C-Media CMI8787",
.longname = "C-Media Oxygen HD Audio",
.chip = "CMI8788",
.init = hifier_init,
.control_filter = hifier_control_filter,
.cleanup = hifier_cleanup,
.resume = hifier_resume,
.set_dac_params = set_ak4396_params,
.set_adc_params = set_cs5340_params,
.update_dac_volume = update_ak4396_volume,
.update_dac_mute = update_ak4396_mute,
.dac_tlv = ak4396_db_scale,
.model_data_size = sizeof(struct hifier_data),
.device_config = PLAYBACK_0_TO_I2S |
PLAYBACK_1_TO_SPDIF |
CAPTURE_0_FROM_I2S_1,
.dac_channels = 2,
.dac_volume_min = 0,
.dac_volume_max = 255,
.function_flags = OXYGEN_FUNCTION_SPI,
.dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
.adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};
static int __devinit get_hifier_model(struct oxygen *chip,
const struct pci_device_id *id)
{
chip->model = model_hifier;
return 0;
}
static int __devinit hifier_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
++dev;
return -ENOENT;
}
err = oxygen_pci_probe(pci, index[dev], id[dev], THIS_MODULE,
hifier_ids, get_hifier_model);
if (err >= 0)
++dev;
return err;
}
static struct pci_driver hifier_driver = {
.name = "CMI8787HiFier",
.id_table = hifier_ids,
.probe = hifier_probe,
.remove = __devexit_p(oxygen_pci_remove),
#ifdef CONFIG_PM
.suspend = oxygen_pci_suspend,
.resume = oxygen_pci_resume,
#endif
};
static int __init alsa_card_hifier_init(void)
{
return pci_register_driver(&hifier_driver);
}
static void __exit alsa_card_hifier_exit(void)
{
pci_unregister_driver(&hifier_driver);
}
module_init(alsa_card_hifier_init)
module_exit(alsa_card_hifier_exit)
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