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android_kernel_motorola_sm6225/sound/pci/oxygen/oxygen.c
Clemens Ladisch e85e09250a [ALSA] oxygen: make all DMA channels configurable 
Allow the card models to specify whether each of the hardware DMA
channels is used.

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

324 lines
8.4 KiB
C
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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/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 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 const struct oxygen_model model_generic = {
.shortname = "C-Media CMI8788",
.longname = "C-Media Oxygen HD Audio",
.chip = "CMI8788",
.owner = THIS_MODULE,
.init = generic_init,
.cleanup = generic_cleanup,
.set_dac_params = set_ak4396_params,
.set_adc_params = set_wm8785_params,
.update_dac_volume = update_ak4396_volume,
.update_dac_mute = update_ak4396_mute,
.dac_tlv = ak4396_db_scale,
.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,
};
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,
.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,
.dac_tlv = ak4396_db_scale,
.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,
};
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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