[PATCH 5.15 119/207] ASoC: tegra: Fix kcontrol put callback in ADMAIF

Greg Kroah-Hartman
2021-12-06T15:51:05Z

From: Sameer Pujar <spujar@nvidia.com>

commit e2b87a18a60c02d0dcd1de801d669587e516cc4d upstream.

The kcontrol put callback is expected to return 1 when there is change
in HW or when the update is acknowledged by driver. This would ensure
that change notifications are sent to subscribed applications. Update
the ADMAIF driver accordingly.

Fixes: f74028e159bb ("ASoC: tegra: Add Tegra210 based ADMAIF driver")
Suggested-by: Jaroslav Kysela <perex@perex.cz>
Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/1637219231-406-8-git-send-email-spujar@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/soc/tegra/tegra210_admaif.c | 138 ++++++++++++++++++++++++++++++--------
1 file changed, 109 insertions(+), 29 deletions(-)

--- a/sound/soc/tegra/tegra210_admaif.c
+++ b/sound/soc/tegra/tegra210_admaif.c
@@ -424,46 +424,122 @@ static const struct snd_soc_dai_ops tegr
.trigger = tegra_admaif_trigger,
};

-static int tegra_admaif_get_control(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+static int tegra210_admaif_pget_mono_to_stereo(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+
+ ucontrol->value.enumerated.item[0] =
+ admaif->mono_to_stereo[ADMAIF_TX_PATH][ec->reg];
+
+ return 0;
+}
+
+static int tegra210_admaif_pput_mono_to_stereo(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
- unsigned int *uctl_val = &ucontrol->value.enumerated.item[0];
+ struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+ unsigned int value = ucontrol->value.enumerated.item[0];

- if (strstr(kcontrol->id.name, "Playback Mono To Stereo"))
- *uctl_val = admaif->mono_to_stereo[ADMAIF_TX_PATH][ec->reg];
- else if (strstr(kcontrol->id.name, "Capture Mono To Stereo"))
- *uctl_val = admaif->mono_to_stereo[ADMAIF_RX_PATH][ec->reg];
- else if (strstr(kcontrol->id.name, "Playback Stereo To Mono"))
- *uctl_val = admaif->stereo_to_mono[ADMAIF_TX_PATH][ec->reg];
- else if (strstr(kcontrol->id.name, "Capture Stereo To Mono"))
- *uctl_val = admaif->stereo_to_mono[ADMAIF_RX_PATH][ec->reg];
+ if (value == admaif->mono_to_stereo[ADMAIF_TX_PATH][ec->reg])
+ return 0;
+
+ admaif->mono_to_stereo[ADMAIF_TX_PATH][ec->reg] = value;
+
+ return 1;
+}
+
+static int tegra210_admaif_cget_mono_to_stereo(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+ struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+
+ ucontrol->value.enumerated.item[0] =
+ admaif->mono_to_stereo[ADMAIF_RX_PATH][ec->reg];

return 0;
}

-static int tegra_admaif_put_control(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+static int tegra210_admaif_cput_mono_to_stereo(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+ unsigned int value = ucontrol->value.enumerated.item[0];
+
+ if (value == admaif->mono_to_stereo[ADMAIF_RX_PATH][ec->reg])
+ return 0;
+
+ admaif->mono_to_stereo[ADMAIF_RX_PATH][ec->reg] = value;
+
+ return 1;
+}
+
+static int tegra210_admaif_pget_stereo_to_mono(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+ struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+
+ ucontrol->value.enumerated.item[0] =
+ admaif->stereo_to_mono[ADMAIF_TX_PATH][ec->reg];
+
+ return 0;
+}
+
+static int tegra210_admaif_pput_stereo_to_mono(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+ struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
unsigned int value = ucontrol->value.enumerated.item[0];

- if (strstr(kcontrol->id.name, "Playback Mono To Stereo"))
- admaif->mono_to_stereo[ADMAIF_TX_PATH][ec->reg] = value;
- else if (strstr(kcontrol->id.name, "Capture Mono To Stereo"))
- admaif->mono_to_stereo[ADMAIF_RX_PATH][ec->reg] = value;
- else if (strstr(kcontrol->id.name, "Playback Stereo To Mono"))
- admaif->stereo_to_mono[ADMAIF_TX_PATH][ec->reg] = value;
- else if (strstr(kcontrol->id.name, "Capture Stereo To Mono"))
- admaif->stereo_to_mono[ADMAIF_RX_PATH][ec->reg] = value;
+ if (value == admaif->stereo_to_mono[ADMAIF_TX_PATH][ec->reg])
+ return 0;
+
+ admaif->stereo_to_mono[ADMAIF_TX_PATH][ec->reg] = value;
+
+ return 1;
+}
+
+static int tegra210_admaif_cget_stereo_to_mono(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+ struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+
+ ucontrol->value.enumerated.item[0] =
+ admaif->stereo_to_mono[ADMAIF_RX_PATH][ec->reg];

return 0;
}

+static int tegra210_admaif_cput_stereo_to_mono(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra_admaif *admaif = snd_soc_component_get_drvdata(cmpnt);
+ struct soc_enum *ec = (struct soc_enum *)kcontrol->private_value;
+ unsigned int value = ucontrol->value.enumerated.item[0];
+
+ if (value == admaif->stereo_to_mono[ADMAIF_RX_PATH][ec->reg])
+ return 0;
+
+ admaif->stereo_to_mono[ADMAIF_RX_PATH][ec->reg] = value;
+
+ return 1;
+}
+
static int tegra_admaif_dai_probe(struct snd_soc_dai *dai)
{
struct tegra_admaif *admaif = snd_soc_dai_get_drvdata(dai);
@@ -559,17 +635,21 @@ static const char * const tegra_admaif_m
}

#define TEGRA_ADMAIF_CIF_CTRL(reg) \
- NV_SOC_ENUM_EXT("ADMAIF" #reg " Playback Mono To Stereo", reg - 1,\
- tegra_admaif_get_control, tegra_admaif_put_control, \
+ NV_SOC_ENUM_EXT("ADMAIF" #reg " Playback Mono To Stereo", reg - 1, \
+ tegra210_admaif_pget_mono_to_stereo, \
+ tegra210_admaif_pput_mono_to_stereo, \
tegra_admaif_mono_conv_text), \
- NV_SOC_ENUM_EXT("ADMAIF" #reg " Playback Stereo To Mono", reg - 1,\
- tegra_admaif_get_control, tegra_admaif_put_control, \
+ NV_SOC_ENUM_EXT("ADMAIF" #reg " Playback Stereo To Mono", reg - 1, \
+ tegra210_admaif_pget_stereo_to_mono, \
+ tegra210_admaif_pput_stereo_to_mono, \
tegra_admaif_stereo_conv_text), \
- NV_SOC_ENUM_EXT("ADMAIF" #reg " Capture Mono To Stereo", reg - 1, \
- tegra_admaif_get_control, tegra_admaif_put_control, \
+ NV_SOC_ENUM_EXT("ADMAIF" #reg " Capture Mono To Stereo", reg - 1, \
+ tegra210_admaif_cget_mono_to_stereo, \
+ tegra210_admaif_cput_mono_to_stereo, \
tegra_admaif_mono_conv_text), \
- NV_SOC_ENUM_EXT("ADMAIF" #reg " Capture Stereo To Mono", reg - 1, \
- tegra_admaif_get_control, tegra_admaif_put_control, \
+ NV_SOC_ENUM_EXT("ADMAIF" #reg " Capture Stereo To Mono", reg - 1, \
+ tegra210_admaif_cget_stereo_to_mono, \
+ tegra210_admaif_cput_stereo_to_mono, \
tegra_admaif_stereo_conv_text)

static struct snd_kcontrol_new tegra210_admaif_controls[] = {