You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
282 lines
6.9 KiB
282 lines
6.9 KiB
/*
|
|
* PMac DACA lowlevel functions
|
|
*
|
|
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/kmod.h>
|
|
#include <linux/slab.h>
|
|
#include <sound/core.h>
|
|
#include "pmac.h"
|
|
|
|
/* i2c address */
|
|
#define DACA_I2C_ADDR 0x4d
|
|
|
|
/* registers */
|
|
#define DACA_REG_SR 0x01
|
|
#define DACA_REG_AVOL 0x02
|
|
#define DACA_REG_GCFG 0x03
|
|
|
|
/* maximum volume value */
|
|
#define DACA_VOL_MAX 0x38
|
|
|
|
|
|
struct pmac_daca {
|
|
struct pmac_keywest i2c;
|
|
int left_vol, right_vol;
|
|
unsigned int deemphasis : 1;
|
|
unsigned int amp_on : 1;
|
|
};
|
|
|
|
|
|
/*
|
|
* initialize / detect DACA
|
|
*/
|
|
static int daca_init_client(struct pmac_keywest *i2c)
|
|
{
|
|
unsigned short wdata = 0x00;
|
|
/* SR: no swap, 1bit delay, 32-48kHz */
|
|
/* GCFG: power amp inverted, DAC on */
|
|
if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 ||
|
|
i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0)
|
|
return -EINVAL;
|
|
return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL,
|
|
2, (unsigned char*)&wdata);
|
|
}
|
|
|
|
/*
|
|
* update volume
|
|
*/
|
|
static int daca_set_volume(struct pmac_daca *mix)
|
|
{
|
|
unsigned char data[2];
|
|
|
|
if (! mix->i2c.client)
|
|
return -ENODEV;
|
|
|
|
if (mix->left_vol > DACA_VOL_MAX)
|
|
data[0] = DACA_VOL_MAX;
|
|
else
|
|
data[0] = mix->left_vol;
|
|
if (mix->right_vol > DACA_VOL_MAX)
|
|
data[1] = DACA_VOL_MAX;
|
|
else
|
|
data[1] = mix->right_vol;
|
|
data[1] |= mix->deemphasis ? 0x40 : 0;
|
|
if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL,
|
|
2, data) < 0) {
|
|
snd_printk(KERN_ERR "failed to set volume \n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* deemphasis switch */
|
|
#define daca_info_deemphasis snd_ctl_boolean_mono_info
|
|
|
|
static int daca_get_deemphasis(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
|
|
struct pmac_daca *mix;
|
|
if (! (mix = chip->mixer_data))
|
|
return -ENODEV;
|
|
ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
|
|
struct pmac_daca *mix;
|
|
int change;
|
|
|
|
if (! (mix = chip->mixer_data))
|
|
return -ENODEV;
|
|
change = mix->deemphasis != ucontrol->value.integer.value[0];
|
|
if (change) {
|
|
mix->deemphasis = !!ucontrol->value.integer.value[0];
|
|
daca_set_volume(mix);
|
|
}
|
|
return change;
|
|
}
|
|
|
|
/* output volume */
|
|
static int daca_info_volume(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *uinfo)
|
|
{
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = 2;
|
|
uinfo->value.integer.min = 0;
|
|
uinfo->value.integer.max = DACA_VOL_MAX;
|
|
return 0;
|
|
}
|
|
|
|
static int daca_get_volume(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
|
|
struct pmac_daca *mix;
|
|
if (! (mix = chip->mixer_data))
|
|
return -ENODEV;
|
|
ucontrol->value.integer.value[0] = mix->left_vol;
|
|
ucontrol->value.integer.value[1] = mix->right_vol;
|
|
return 0;
|
|
}
|
|
|
|
static int daca_put_volume(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
|
|
struct pmac_daca *mix;
|
|
unsigned int vol[2];
|
|
int change;
|
|
|
|
if (! (mix = chip->mixer_data))
|
|
return -ENODEV;
|
|
vol[0] = ucontrol->value.integer.value[0];
|
|
vol[1] = ucontrol->value.integer.value[1];
|
|
if (vol[0] > DACA_VOL_MAX || vol[1] > DACA_VOL_MAX)
|
|
return -EINVAL;
|
|
change = mix->left_vol != vol[0] ||
|
|
mix->right_vol != vol[1];
|
|
if (change) {
|
|
mix->left_vol = vol[0];
|
|
mix->right_vol = vol[1];
|
|
daca_set_volume(mix);
|
|
}
|
|
return change;
|
|
}
|
|
|
|
/* amplifier switch */
|
|
#define daca_info_amp daca_info_deemphasis
|
|
|
|
static int daca_get_amp(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
|
|
struct pmac_daca *mix;
|
|
if (! (mix = chip->mixer_data))
|
|
return -ENODEV;
|
|
ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
static int daca_put_amp(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
|
|
struct pmac_daca *mix;
|
|
int change;
|
|
|
|
if (! (mix = chip->mixer_data))
|
|
return -ENODEV;
|
|
change = mix->amp_on != ucontrol->value.integer.value[0];
|
|
if (change) {
|
|
mix->amp_on = !!ucontrol->value.integer.value[0];
|
|
i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
|
|
mix->amp_on ? 0x05 : 0x04);
|
|
}
|
|
return change;
|
|
}
|
|
|
|
static struct snd_kcontrol_new daca_mixers[] = {
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Deemphasis Switch",
|
|
.info = daca_info_deemphasis,
|
|
.get = daca_get_deemphasis,
|
|
.put = daca_put_deemphasis
|
|
},
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Master Playback Volume",
|
|
.info = daca_info_volume,
|
|
.get = daca_get_volume,
|
|
.put = daca_put_volume
|
|
},
|
|
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "Power Amplifier Switch",
|
|
.info = daca_info_amp,
|
|
.get = daca_get_amp,
|
|
.put = daca_put_amp
|
|
},
|
|
};
|
|
|
|
|
|
#ifdef CONFIG_PM
|
|
static void daca_resume(struct snd_pmac *chip)
|
|
{
|
|
struct pmac_daca *mix = chip->mixer_data;
|
|
i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08);
|
|
i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
|
|
mix->amp_on ? 0x05 : 0x04);
|
|
daca_set_volume(mix);
|
|
}
|
|
#endif /* CONFIG_PM */
|
|
|
|
|
|
static void daca_cleanup(struct snd_pmac *chip)
|
|
{
|
|
struct pmac_daca *mix = chip->mixer_data;
|
|
if (! mix)
|
|
return;
|
|
snd_pmac_keywest_cleanup(&mix->i2c);
|
|
kfree(mix);
|
|
chip->mixer_data = NULL;
|
|
}
|
|
|
|
/* exported */
|
|
int __init snd_pmac_daca_init(struct snd_pmac *chip)
|
|
{
|
|
int i, err;
|
|
struct pmac_daca *mix;
|
|
|
|
request_module("i2c-powermac");
|
|
|
|
mix = kzalloc(sizeof(*mix), GFP_KERNEL);
|
|
if (! mix)
|
|
return -ENOMEM;
|
|
chip->mixer_data = mix;
|
|
chip->mixer_free = daca_cleanup;
|
|
mix->amp_on = 1; /* default on */
|
|
|
|
mix->i2c.addr = DACA_I2C_ADDR;
|
|
mix->i2c.init_client = daca_init_client;
|
|
mix->i2c.name = "DACA";
|
|
if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0)
|
|
return err;
|
|
|
|
/*
|
|
* build mixers
|
|
*/
|
|
strcpy(chip->card->mixername, "PowerMac DACA");
|
|
|
|
for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
|
|
if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip))) < 0)
|
|
return err;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
chip->resume = daca_resume;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|