[PATCH v2 1/4] ASoC: SDCA: make q78_get_volsw and q78_put_volsw extern

From: Niranjan H Y

Date: Thu Mar 26 2026 - 14:28:46 EST


q78_get_volsw and q78_put_volsw are get and set functions
in sdca library to handle 16bit signed Q7.8 values for
Volume control. Make them extern so that ASoC drivers can
reuse them.

Signed-off-by: Niranjan H Y <niranjan.hy@xxxxxx>
---
v2:
- newly added patch
---
include/sound/sdca_asoc.h | 6 ++++++
sound/soc/sdca/sdca_asoc.c | 10 ++++++----
2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/include/sound/sdca_asoc.h b/include/sound/sdca_asoc.h
index aa9124f932189..bea885202c35a 100644
--- a/include/sound/sdca_asoc.h
+++ b/include/sound/sdca_asoc.h
@@ -13,6 +13,8 @@
struct device;
struct regmap;
struct sdca_function_data;
+struct snd_ctl_elem_value;
+struct snd_kcontrol;
struct snd_kcontrol_new;
struct snd_pcm_hw_params;
struct snd_pcm_substream;
@@ -57,5 +59,9 @@ int sdca_asoc_hw_params(struct device *dev, struct regmap *regmap,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai);
+int q78_put_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int q78_get_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);

#endif // __SDCA_ASOC_H__
diff --git a/sound/soc/sdca/sdca_asoc.c b/sound/soc/sdca/sdca_asoc.c
index 733c9808891a4..6ea61e5c761c1 100644
--- a/sound/soc/sdca/sdca_asoc.c
+++ b/sound/soc/sdca/sdca_asoc.c
@@ -820,8 +820,8 @@ static int q78_write(struct snd_soc_component *component,
return snd_soc_component_update_bits(component, reg, mask, reg_val);
}

-static int q78_put_volsw(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+int q78_put_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
@@ -841,6 +841,7 @@ static int q78_put_volsw(struct snd_kcontrol *kcontrol,

return ret;
}
+EXPORT_SYMBOL_NS(q78_put_volsw, "SND_SOC_SDCA");

static int q78_read(struct snd_soc_component *component,
struct soc_mixer_control *mc, unsigned int reg)
@@ -855,8 +856,8 @@ static int q78_read(struct snd_soc_component *component,
return val & GENMASK(mc->sign_bit, 0);
}

-static int q78_get_volsw(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+int q78_get_volsw(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value;
struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
@@ -868,6 +869,7 @@ static int q78_get_volsw(struct snd_kcontrol *kcontrol,

return 0;
}
+EXPORT_SYMBOL_NS(q78_get_volsw, "SND_SOC_SDCA");

static int control_limit_kctl(struct device *dev,
struct sdca_entity *entity,
--
2.34.1