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05855ba3f4
linux/sound/pci/oxygen/oxygen.c
Clemens Ladisch 05855ba3f4 [ALSA] oxygen: make the I2S format configurable 
Add proper register bit symbols for the I2S format field, and allow card
models to configure the I2S format to be used for the DACs and ADCs.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:03 +01:00

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/*
* C-Media CMI8788 driver for C-Media's reference design and for the X-Meridian
*
* 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
*/
/*
* SPI 0 -> 1st AK4396 (front)
* SPI 1 -> 2nd AK4396 (surround)
* SPI 2 -> 3rd AK4396 (center/LFE)
* SPI 3 -> WM8785
* SPI 4 -> 4th AK4396 (back)
*
* GPIO 0 -> DFS0 of AK5385
* GPIO 1 -> DFS1 of AK5385
*/
#include <linux/pci.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/tlv.h>
#include "oxygen.h"
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_DESCRIPTION("C-Media CMI8788 driver");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8788}}");
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 oxygen_ids[] __devinitdata = {
{ OXYGEN_PCI_SUBID(0x10b0, 0x0216) },
{ OXYGEN_PCI_SUBID(0x10b0, 0x0218) },
{ OXYGEN_PCI_SUBID(0x10b0, 0x0219) },
{ OXYGEN_PCI_SUBID(0x13f6, 0x0001) },
{ OXYGEN_PCI_SUBID(0x13f6, 0x0010) },
{ OXYGEN_PCI_SUBID(0x13f6, 0x8788) },
{ OXYGEN_PCI_SUBID(0x147a, 0xa017) },
{ OXYGEN_PCI_SUBID(0x14c3, 0x1710) },
{ OXYGEN_PCI_SUBID(0x14c3, 0x1711) },
{ OXYGEN_PCI_SUBID(0x1a58, 0x0910) },
{ OXYGEN_PCI_SUBID(0x415a, 0x5431), .driver_data = 1 },
{ OXYGEN_PCI_SUBID(0x7284, 0x9761) },
{ }
};
MODULE_DEVICE_TABLE(pci, oxygen_ids);
#define AK4396_WRITE 0x2000
/* register 0 */
#define AK4396_RSTN 0x01
#define AK4396_DIF_24_MSB 0x04
/* register 1 */
#define AK4396_SMUTE 0x01
#define AK4396_DEM_OFF 0x02
#define AK4396_DFS_MASK 0x18
#define AK4396_DFS_NORMAL 0x00
#define AK4396_DFS_DOUBLE 0x08
#define AK4396_DFS_QUAD 0x10
/* register 0 */
#define WM8785_OSR_SINGLE 0x000
#define WM8785_OSR_DOUBLE 0x008
#define WM8785_OSR_QUAD 0x010
#define WM8785_FORMAT_LJUST 0x020
#define WM8785_FORMAT_I2S 0x040
/* register 1 */
#define WM8785_WL_16 0x000
#define WM8785_WL_20 0x001
#define WM8785_WL_24 0x002
#define WM8785_WL_32 0x003
static void ak4396_write(struct oxygen *chip, unsigned int codec,
u8 reg, u8 value)
{
/* maps ALSA channel pair number to SPI output */
static const u8 codec_spi_map[4] = {
0, 1, 2, 4
};
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE |
OXYGEN_SPI_DATA_LENGTH_2 |
(codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_MAGIC,
AK4396_WRITE | (reg << 8) | value);
}
static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
{
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE |
OXYGEN_SPI_DATA_LENGTH_2 |
(3 << OXYGEN_SPI_CODEC_SHIFT),
(reg << 9) | value);
}
static void ak4396_init(struct oxygen *chip)
{
unsigned int i;
chip->ak4396_reg1 = AK4396_DEM_OFF | AK4396_DFS_NORMAL;
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i, 0, AK4396_DIF_24_MSB | AK4396_RSTN);
ak4396_write(chip, i, 1, chip->ak4396_reg1);
ak4396_write(chip, i, 2, 0);
ak4396_write(chip, i, 3, 0xff);
ak4396_write(chip, i, 4, 0xff);
}
snd_component_add(chip->card, "AK4396");
}
static void ak5385_init(struct oxygen *chip)
{
oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, 0x0003);
oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, 0x0003);
snd_component_add(chip->card, "AK5385");
}
static void wm8785_init(struct oxygen *chip)
{
wm8785_write(chip, 7, 0);
wm8785_write(chip, 0, WM8785_FORMAT_LJUST | WM8785_OSR_SINGLE);
wm8785_write(chip, 1, WM8785_WL_24);
snd_component_add(chip->card, "WM8785");
}
static void generic_init(struct oxygen *chip)
{
ak4396_init(chip);
wm8785_init(chip);
}
static void meridian_init(struct oxygen *chip)
{
ak4396_init(chip);
ak5385_init(chip);
}
static void generic_cleanup(struct oxygen *chip)
{
}
static void generic_pcm_hardware_filter(unsigned int channel,
struct snd_pcm_hardware *hardware)
{
if (channel == PCM_A) {
hardware->rates = SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_96000 |
SNDRV_PCM_RATE_192000;
hardware->rate_min = 44100;
}
}
static void set_ak4396_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
unsigned int i;
u8 value;
value = chip->ak4396_reg1 & ~AK4396_DFS_MASK;
if (params_rate(params) <= 54000)
value |= AK4396_DFS_NORMAL;
else if (params_rate(params) < 120000)
value |= AK4396_DFS_DOUBLE;
else
value |= AK4396_DFS_QUAD;
chip->ak4396_reg1 = value;
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i, 0, AK4396_DIF_24_MSB);
ak4396_write(chip, i, 1, value);
ak4396_write(chip, i, 0, AK4396_DIF_24_MSB | AK4396_RSTN);
}
}
static void update_ak4396_volume(struct oxygen *chip)
{
unsigned int i;
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i, 3, chip->dac_volume[i * 2]);
ak4396_write(chip, i, 4, chip->dac_volume[i * 2 + 1]);
}
}
static void update_ak4396_mute(struct oxygen *chip)
{
unsigned int i;
u8 value;
value = chip->ak4396_reg1 & ~AK4396_SMUTE;
if (chip->dac_mute)
value |= AK4396_SMUTE;
for (i = 0; i < 4; ++i)
ak4396_write(chip, i, 1, value);
}
static void set_wm8785_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
unsigned int value;
wm8785_write(chip, 7, 0);
value = WM8785_FORMAT_LJUST;
if (params_rate(params) == 96000)
value |= WM8785_OSR_DOUBLE;
else if (params_rate(params) == 192000)
value |= WM8785_OSR_QUAD;
else
value |= WM8785_OSR_SINGLE;
wm8785_write(chip, 0, value);
if (snd_pcm_format_width(params_format(params)) <= 16)
value = WM8785_WL_16;
else
value = WM8785_WL_24;
wm8785_write(chip, 1, value);
}
static void set_ak5385_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
unsigned int value;
if (params_rate(params) <= 54000)
value = 0;
else if (params_rate(params) <= 108000)
value = 1;
else
value = 2;
oxygen_write16_masked(chip, OXYGEN_GPIO_DATA, value, 0x0003);
}
static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
static int ak4396_control_filter(struct snd_kcontrol_new *template)
{
if (!strcmp(template->name, "Master Playback Volume")) {
template->access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
template->tlv.p = ak4396_db_scale;
}
return 0;
}
static const struct oxygen_model model_generic = {
.shortname = "C-Media CMI8788",
.longname = "C-Media Oxygen HD Audio",
.chip = "CMI8788",
.owner = THIS_MODULE,
.init = generic_init,
.control_filter = ak4396_control_filter,
.cleanup = generic_cleanup,
.pcm_hardware_filter = generic_pcm_hardware_filter,
.set_dac_params = set_ak4396_params,
.set_adc_params = set_wm8785_params,
.update_dac_volume = update_ak4396_volume,
.update_dac_mute = update_ak4396_mute,
.used_channels = OXYGEN_CHANNEL_A |
OXYGEN_CHANNEL_C |
OXYGEN_CHANNEL_SPDIF |
OXYGEN_CHANNEL_MULTICH |
OXYGEN_CHANNEL_AC97,
.function_flags = OXYGEN_FUNCTION_ENABLE_SPI_4_5,
.dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
.adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};
static const struct oxygen_model model_meridian = {
.shortname = "C-Media CMI8788",
.longname = "C-Media Oxygen HD Audio",
.chip = "CMI8788",
.owner = THIS_MODULE,
.init = meridian_init,
.control_filter = ak4396_control_filter,
.cleanup = generic_cleanup,
.set_dac_params = set_ak4396_params,
.set_adc_params = set_ak5385_params,
.update_dac_volume = update_ak4396_volume,
.update_dac_mute = update_ak4396_mute,
.used_channels = OXYGEN_CHANNEL_B |
OXYGEN_CHANNEL_C |
OXYGEN_CHANNEL_SPDIF |
OXYGEN_CHANNEL_MULTICH |
OXYGEN_CHANNEL_AC97,
.function_flags = OXYGEN_FUNCTION_ENABLE_SPI_4_5,
.dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
.adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
};
static int __devinit generic_oxygen_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
const struct oxygen_model *model;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
++dev;
return -ENOENT;
}
model = pci_id->driver_data ? &model_meridian : &model_generic;
err = oxygen_pci_probe(pci, index[dev], id[dev], model);
if (err >= 0)
++dev;
return err;
}
static struct pci_driver oxygen_driver = {
.name = "CMI8788",
.id_table = oxygen_ids,
.probe = generic_oxygen_probe,
.remove = __devexit_p(oxygen_pci_remove),
};
static int __init alsa_card_oxygen_init(void)
{
return pci_register_driver(&oxygen_driver);
}
static void __exit alsa_card_oxygen_exit(void)
{
pci_unregister_driver(&oxygen_driver);
}
module_init(alsa_card_oxygen_init)
module_exit(alsa_card_oxygen_exit)
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