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linux/sound/ppc/daca.c
Linus Torvalds bf4afc53b7 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-21 17:09:51 -08:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PMac DACA lowlevel functions
*
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
*/
#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) {
dev_err(&mix->i2c.client->dev, "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;
mix = chip->mixer_data;
if (!mix)
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;
mix = chip->mixer_data;
if (!mix)
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;
mix = chip->mixer_data;
if (!mix)
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;
mix = chip->mixer_data;
if (!mix)
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;
mix = chip->mixer_data;
if (!mix)
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;
mix = chip->mixer_data;
if (!mix)
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 const 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 snd_pmac_daca_init(struct snd_pmac *chip)
{
int i, err;
struct pmac_daca *mix;
request_module("i2c-powermac");
mix = kzalloc_obj(*mix);
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";
err = snd_pmac_keywest_init(&mix->i2c);
if (err < 0)
return err;
/*
* build mixers
*/
strscpy(chip->card->mixername, "PowerMac DACA");
for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip));
if (err < 0)
return err;
}
#ifdef CONFIG_PM
chip->resume = daca_resume;
#endif
return 0;
}
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