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Release 4.7 sound/ppc/daca.c

Directory: sound/ppc
/*
 * 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); }

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jaroslav kyselajaroslav kysela6084.51%133.33%
gabriel paubertgabriel paubert912.68%133.33%
takashi iwaitakashi iwai22.82%133.33%
Total71100.00%3100.00%

/* * 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; }

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jaroslav kyselajaroslav kysela12295.31%350.00%
gabriel paubertgabriel paubert32.34%116.67%
takashi iwaitakashi iwai32.34%233.33%
Total128100.00%6100.00%

/* 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; }

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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; }

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/* 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; }

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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; }

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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; }

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jaroslav kyselajaroslav kysela9358.12%133.33%
takashi iwaitakashi iwai6741.88%266.67%
Total160100.00%3100.00%

/* 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; }

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jaroslav kyselajaroslav kysela6088.24%150.00%
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Total68100.00%2100.00%


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; }

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Total111100.00%4100.00%

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); }

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takashi iwaitakashi iwai47.02%133.33%
Total57100.00%3100.00%

#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; }

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takashi iwaitakashi iwai48.89%150.00%
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/* exported */
int 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; }

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takashi iwaitakashi iwai42.20%114.29%
benjamin herrenschmidtbenjamin herrenschmidt21.10%228.57%
panagiotis issaris*panagiotis issaris*10.55%114.29%
Total182100.00%7100.00%


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jaroslav kyselajaroslav kysela110385.24%640.00%
takashi iwaitakashi iwai14110.90%426.67%
rusty russellrusty russell241.85%16.67%
gabriel paubertgabriel paubert211.62%16.67%
benjamin herrenschmidtbenjamin herrenschmidt40.31%213.33%
panagiotis issaris*panagiotis issaris*10.08%16.67%
Total1294100.00%15100.00%
Directory: sound/ppc
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