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ASoC: simple-amplifier: gpio-audio-amp: Add support for extra power supplies

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The gpio-audio-amp devices can use additional power supplies:
  - vddio,
  - vdda1,
  - vdda2

Add support for those additional power supplies.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://patch.msgid.link/20260513081702.317117-11-herve.codina@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Herve Codina 2026-05-13 10:16:54 +02:00 committed by Mark Brown
parent 41e3ebbfca
commit f68933d0eb
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 82 additions and 3 deletions
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85
sound/soc/codecs/simple-amplifier.c
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@ -15,6 +15,7 @@
struct simple_amp_data {
unsigned int supports;
#define SIMPLE_AUDIO_SUPPORT_PGA BIT(0)
#define SIMPLE_AUDIO_SUPPORT_POWER_SUPPLIES BIT(1)
const struct snd_soc_dapm_widget *dapm_widgets;
unsigned int num_dapm_widgets;
@ -127,10 +128,86 @@ static int simple_amp_add_basic_dapm(struct snd_soc_component *component)
return 0;
}
struct simple_amp_supply {
const char *prop_name;
const struct snd_soc_dapm_widget dapm_widget;
const struct snd_soc_dapm_route dapm_route;
};
static const struct simple_amp_supply simple_amp_supplies[] = {
{
.prop_name = "vddio-supply",
.dapm_widget = SND_SOC_DAPM_REGULATOR_SUPPLY("vddio", 0, 0),
.dapm_route = { "PGA", NULL, "vddio" },
}, {
.prop_name = "vdda1-supply",
.dapm_widget = SND_SOC_DAPM_REGULATOR_SUPPLY("vdda1", 0, 0),
.dapm_route = { "PGA", NULL, "vdda1" },
}, {
.prop_name = "vdda2-supply",
.dapm_widget = SND_SOC_DAPM_REGULATOR_SUPPLY("vdda2", 0, 0),
.dapm_route = { "PGA", NULL, "vdda2" },
},
{ /* End of list */}
};
static int simple_amp_add_power_supplies(struct snd_soc_component *component)
{
struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component);
struct simple_amp *simple_amp = snd_soc_component_get_drvdata(component);
const struct simple_amp_supply *supply;
struct device *dev = component->dev;
int ret;
/*
* Those additional power supplies are attached to the PGA.
* If PGA is not supported, simply skipped them.
*/
if (!(simple_amp->data->supports & SIMPLE_AUDIO_SUPPORT_PGA)) {
dev_err(dev, "Extra power supplied need PGA\n");
return -EINVAL;
}
supply = simple_amp_supplies;
do {
if (!of_property_present(dev->of_node, supply->prop_name))
continue;
ret = snd_soc_dapm_new_controls(dapm, &supply->dapm_widget, 1);
if (ret) {
dev_err(dev, "Failed to add control for '%s' (%d)\n",
supply->prop_name, ret);
return ret;
}
ret = snd_soc_dapm_add_routes(dapm, &supply->dapm_route, 1);
if (ret) {
dev_err(dev, "Failed to add route for '%s' (%d)\n",
supply->prop_name, ret);
return ret;
}
} while ((++supply)->prop_name);
return 0;
}
static int simple_amp_component_probe(struct snd_soc_component *component)
{
struct simple_amp *simple_amp = snd_soc_component_get_drvdata(component);
int ret;
/* Add basic dapm widgets and routes */
return simple_amp_add_basic_dapm(component);
ret = simple_amp_add_basic_dapm(component);
if (ret)
return ret;
/* Add additional power supplies */
if (simple_amp->data->supports & SIMPLE_AUDIO_SUPPORT_POWER_SUPPLIES) {
ret = simple_amp_add_power_supplies(component);
if (ret)
return ret;
}
return 0;
}
static const struct snd_soc_component_driver simple_amp_component_driver = {
@ -170,7 +247,8 @@ static const struct simple_amp_data simple_audio_amplifier_data = {
};
static const struct simple_amp_data simple_audio_mono_pga_data = {
.supports = SIMPLE_AUDIO_SUPPORT_PGA,
.supports = SIMPLE_AUDIO_SUPPORT_PGA |
SIMPLE_AUDIO_SUPPORT_POWER_SUPPLIES,
.dapm_widgets = simple_amp_mono_pga_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(simple_amp_mono_pga_dapm_widgets),
.dapm_routes = simple_amp_mono_pga_dapm_routes,
@ -178,7 +256,8 @@ static const struct simple_amp_data simple_audio_mono_pga_data = {
};
static const struct simple_amp_data simple_audio_stereo_pga_data = {
.supports = SIMPLE_AUDIO_SUPPORT_PGA,
.supports = SIMPLE_AUDIO_SUPPORT_PGA |
SIMPLE_AUDIO_SUPPORT_POWER_SUPPLIES,
.dapm_widgets = simple_amp_stereo_pga_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(simple_amp_stereo_pga_dapm_widgets),
.dapm_routes = simple_amp_stereo_pga_dapm_routes,