diff options
| author | Niranjan H Y <niranjan.hy@ti.com> | 2026-04-01 18:51:45 +0530 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-04-03 15:12:38 +0100 |
| commit | ba2a0e81d4d71c3bbc61c420b6fac5abaeddd77d (patch) | |
| tree | 086086953c27ae7012405e2b86fd85c91a258e7f /include | |
| parent | 04cc47624a33a6b56c62bfd65ad6b2d1c42e17c4 (diff) | |
ASoC: SDCA: Export Q7.8 volume control helpers
Export the Q7.8 volume control helpers to allow reuse
by other ASoC drivers. These functions handle 16-bit
signed Q7.8 fixed-point format values for volume controls.
Changes include:
- Rename q78_get_volsw to sdca_asoc_q78_get_volsw
- Rename q78_put_volsw to sdca_asoc_q78_put_volsw
- Add a convenience macro SDCA_SINGLE_Q78_TLV and
SDCA_DOUBLE_Q78_TLV for creating mixer controls
This allows other ASoC drivers to easily implement controls
using the Q7.8 fixed-point format without duplicating code.
Signed-off-by: Niranjan H Y <niranjan.hy@ti.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260401132148.2367-1-niranjan.hy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sound/sdca_asoc.h | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/include/sound/sdca_asoc.h b/include/sound/sdca_asoc.h index aa9124f932189..46a61a52decc5 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; @@ -23,6 +25,42 @@ struct snd_soc_dai_ops; struct snd_soc_dapm_route; struct snd_soc_dapm_widget; +/* convenient macro to handle the mono volume in 7.8 fixed format representation */ +#define SDCA_SINGLE_Q78_TLV(xname, xreg, xmin, xmax, xstep, tlv_array) \ +{ \ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = (xname), \ + .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE, \ + .tlv.p = (tlv_array), \ + .info = snd_soc_info_volsw, \ + .get = sdca_asoc_q78_get_volsw, \ + .put = sdca_asoc_q78_put_volsw, \ + .private_value = (unsigned long)&(struct soc_mixer_control) { \ + .reg = (xreg), .rreg = (xreg), \ + .min = (xmin), .max = (xmax), \ + .shift = (xstep), .rshift = (xstep), \ + .sign_bit = 15 \ + } \ +} + +/* convenient macro for stereo volume in 7.8 fixed format with separate registers for L/R */ +#define SDCA_DOUBLE_Q78_TLV(xname, xreg_l, xreg_r, xmin, xmax, xstep, tlv_array) \ +{ \ + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = (xname), \ + .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE, \ + .tlv.p = (tlv_array), \ + .info = snd_soc_info_volsw, \ + .get = sdca_asoc_q78_get_volsw, \ + .put = sdca_asoc_q78_put_volsw, \ + .private_value = (unsigned long)&(struct soc_mixer_control) { \ + .reg = (xreg_l), .rreg = (xreg_r), \ + .min = (xmin), .max = (xmax), \ + .shift = (xstep), .rshift = (xstep), \ + .sign_bit = 15 \ + } \ +} + int sdca_asoc_count_component(struct device *dev, struct sdca_function_data *function, int *num_widgets, int *num_routes, int *num_controls, int *num_dais); @@ -57,5 +95,8 @@ 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 sdca_asoc_q78_put_volsw(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); +int sdca_asoc_q78_get_volsw(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); #endif // __SDCA_ASOC_H__ |