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android_kernel_motorola_sm6225/sound/pci/oxygen/oxygen.c
Clemens Ladisch 2ea85986dd [ALSA] oxygen: revert SPI clock frequency change for AK4396/WM8785 
While the AK4396 and WM8785 datasheets say that the SPI clock cycle
length must be at least 200 ns, 320 ns seems not to work reliably with
the controller, so we better use 160 ns.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:23 +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"
#include "ak4396.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(0x1a58, 0x0910) },
{ OXYGEN_PCI_SUBID(0x415a, 0x5431), .driver_data = 1 },
{ OXYGEN_PCI_SUBID(0x7284, 0x9761) },
{ }
};
MODULE_DEVICE_TABLE(pci, oxygen_ids);
#define GPIO_AK5385_DFS_MASK 0x0003
#define GPIO_AK5385_DFS_NORMAL 0x0000
#define GPIO_AK5385_DFS_DOUBLE 0x0001
#define GPIO_AK5385_DFS_QUAD 0x0002
#define WM8785_R0 0
#define WM8785_R1 1
#define WM8785_R2 2
#define WM8785_R7 7
/* R0 */
#define WM8785_MCR_MASK 0x007
#define WM8785_MCR_SLAVE 0x000
#define WM8785_MCR_MASTER_128 0x001
#define WM8785_MCR_MASTER_192 0x002
#define WM8785_MCR_MASTER_256 0x003
#define WM8785_MCR_MASTER_384 0x004
#define WM8785_MCR_MASTER_512 0x005
#define WM8785_MCR_MASTER_768 0x006
#define WM8785_OSR_MASK 0x018
#define WM8785_OSR_SINGLE 0x000
#define WM8785_OSR_DOUBLE 0x008
#define WM8785_OSR_QUAD 0x010
#define WM8785_FORMAT_MASK 0x060
#define WM8785_FORMAT_RJUST 0x000
#define WM8785_FORMAT_LJUST 0x020
#define WM8785_FORMAT_I2S 0x040
#define WM8785_FORMAT_DSP 0x060
/* R1 */
#define WM8785_WL_MASK 0x003
#define WM8785_WL_16 0x000
#define WM8785_WL_20 0x001
#define WM8785_WL_24 0x002
#define WM8785_WL_32 0x003
#define WM8785_LRP 0x004
#define WM8785_BCLKINV 0x008
#define WM8785_LRSWAP 0x010
#define WM8785_DEVNO_MASK 0x0e0
/* R2 */
#define WM8785_HPFR 0x001
#define WM8785_HPFL 0x002
#define WM8785_SDODIS 0x004
#define WM8785_PWRDNR 0x008
#define WM8785_PWRDNL 0x010
#define WM8785_TDM_MASK 0x1c0
struct generic_data {
u8 ak4396_ctl2;
};
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 |
OXYGEN_SPI_DATA_LENGTH_2 |
OXYGEN_SPI_CLOCK_160 |
(codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
AK4396_WRITE | (reg << 8) | value);
}
static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
{
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
OXYGEN_SPI_DATA_LENGTH_2 |
OXYGEN_SPI_CLOCK_160 |
(3 << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_LO,
(reg << 9) | value);
}
static void ak4396_init(struct oxygen *chip)
{
struct generic_data *data = chip->model_data;
unsigned int i;
data->ak4396_ctl2 = AK4396_DEM_OFF | AK4396_DFS_NORMAL;
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i,
AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
ak4396_write(chip, i,
AK4396_CONTROL_2, data->ak4396_ctl2);
ak4396_write(chip, i,
AK4396_CONTROL_3, AK4396_PCM);
ak4396_write(chip, i, AK4396_LCH_ATT, 0xff);
ak4396_write(chip, i, AK4396_RCH_ATT, 0xff);
}
snd_component_add(chip->card, "AK4396");
}
static void ak5385_init(struct oxygen *chip)
{
oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, GPIO_AK5385_DFS_MASK);
oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, GPIO_AK5385_DFS_MASK);
snd_component_add(chip->card, "AK5385");
}
static void wm8785_init(struct oxygen *chip)
{
wm8785_write(chip, WM8785_R7, 0);
wm8785_write(chip, WM8785_R0, WM8785_MCR_SLAVE |
WM8785_OSR_SINGLE | WM8785_FORMAT_LJUST);
wm8785_write(chip, WM8785_R1, 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)
{
struct generic_data *data = chip->model_data;
unsigned int i;
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;
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i,
AK4396_CONTROL_1, AK4396_DIF_24_MSB);
ak4396_write(chip, i,
AK4396_CONTROL_2, value);
ak4396_write(chip, i,
AK4396_CONTROL_1, 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,
AK4396_LCH_ATT, chip->dac_volume[i * 2]);
ak4396_write(chip, i,
AK4396_RCH_ATT, chip->dac_volume[i * 2 + 1]);
}
}
static void update_ak4396_mute(struct oxygen *chip)
{
struct generic_data *data = chip->model_data;
unsigned int i;
u8 value;
value = data->ak4396_ctl2 & ~AK4396_SMUTE;
if (chip->dac_mute)
value |= AK4396_SMUTE;
data->ak4396_ctl2 = value;
for (i = 0; i < 4; ++i)
ak4396_write(chip, i, AK4396_CONTROL_2, value);
}
static void set_wm8785_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
unsigned int value;
wm8785_write(chip, WM8785_R7, 0);
value = WM8785_MCR_SLAVE | WM8785_FORMAT_LJUST;
if (params_rate(params) <= 48000)
value |= WM8785_OSR_SINGLE;
else if (params_rate(params) <= 96000)
value |= WM8785_OSR_DOUBLE;
else
value |= WM8785_OSR_QUAD;
wm8785_write(chip, WM8785_R0, value);
if (snd_pcm_format_width(params_format(params)) <= 16)
value = WM8785_WL_16;
else
value = WM8785_WL_24;
wm8785_write(chip, WM8785_R1, value);
}
static void set_ak5385_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
unsigned int value;
if (params_rate(params) <= 54000)
value = GPIO_AK5385_DFS_NORMAL;
else if (params_rate(params) <= 108000)
value = GPIO_AK5385_DFS_DOUBLE;
else
value = GPIO_AK5385_DFS_QUAD;
oxygen_write16_masked(chip, OXYGEN_GPIO_DATA,
value, GPIO_AK5385_DFS_MASK);
}
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,
.set_dac_params = set_ak4396_params,
.set_adc_params = set_wm8785_params,
.update_dac_volume = update_ak4396_volume,
.update_dac_mute = update_ak4396_mute,
.model_data_size = sizeof(struct generic_data),
.dac_channels = 8,
.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,
.model_data_size = sizeof(struct generic_data),
.dac_channels = 8,
.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;
int is_meridian;
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
++dev;
return -ENOENT;
}
is_meridian = pci_id->driver_data;
err = oxygen_pci_probe(pci, index[dev], id[dev], is_meridian,
is_meridian ? &model_meridian : &model_generic);
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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