Commit 6c508c62 authored by Eero Nurkkala's avatar Eero Nurkkala Committed by Mark Brown

ASoC: refactor snd_soc_update_bits()

Introduce a wrapper call snd_soc_update_bits_locked()
that will take the codec mutex. This call is used
when the codec mutex is not already taken.

Drivers calling snd_soc_update_bits() may wish to
make sure the codec mutex is taken from the driver.
Signed-off-by: default avatarEero Nurkkala <ext-eero.nurkkala@nokia.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 8538a119
......@@ -1355,6 +1355,30 @@ int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
}
EXPORT_SYMBOL_GPL(snd_soc_update_bits);
/**
* snd_soc_update_bits_locked - update codec register bits
* @codec: audio codec
* @reg: codec register
* @mask: register mask
* @value: new value
*
* Writes new register value, and takes the codec mutex.
*
* Returns 1 for change else 0.
*/
static int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
unsigned short reg, unsigned int mask,
unsigned int value)
{
int change;
mutex_lock(&codec->mutex);
change = snd_soc_update_bits(codec, reg, mask, value);
mutex_unlock(&codec->mutex);
return change;
}
/**
* snd_soc_test_bits - test register for change
* @codec: audio codec
......@@ -1706,7 +1730,7 @@ int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
mask |= (bitmask - 1) << e->shift_r;
}
return snd_soc_update_bits(codec, e->reg, mask, val);
return snd_soc_update_bits_locked(codec, e->reg, mask, val);
}
EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);
......@@ -1780,7 +1804,7 @@ int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
mask |= e->mask << e->shift_r;
}
return snd_soc_update_bits(codec, e->reg, mask, val);
return snd_soc_update_bits_locked(codec, e->reg, mask, val);
}
EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
......@@ -1941,7 +1965,7 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
val_mask |= mask << rshift;
val |= val2 << rshift;
}
return snd_soc_update_bits(codec, reg, val_mask, val);
return snd_soc_update_bits_locked(codec, reg, val_mask, val);
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
......@@ -2047,11 +2071,11 @@ int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
val = val << shift;
val2 = val2 << shift;
err = snd_soc_update_bits(codec, reg, val_mask, val);
err = snd_soc_update_bits_locked(codec, reg, val_mask, val);
if (err < 0)
return err;
err = snd_soc_update_bits(codec, reg2, val_mask, val2);
err = snd_soc_update_bits_locked(codec, reg2, val_mask, val2);
return err;
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_2r);
......@@ -2130,7 +2154,7 @@ int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
val = (ucontrol->value.integer.value[0]+min) & 0xff;
val |= ((ucontrol->value.integer.value[1]+min) & 0xff) << 8;
return snd_soc_update_bits(codec, reg, 0xffff, val);
return snd_soc_update_bits_locked(codec, reg, 0xffff, val);
}
EXPORT_SYMBOL_GPL(snd_soc_put_volsw_s8);
......
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