1 // SPDX-License-Identifier: GPL-2.0-only
3 // nau8315.c  --  NAU8315 ALSA SoC Audio Amplifier Driver
22 #include <sound/soc-dai.h>
23 #include <sound/soc-dapm.h>
26 	struct gpio_desc *enable;  member
30 static int nau8315_daiops_trigger(struct snd_pcm_substream *substream,  in nau8315_daiops_trigger()
33 	struct snd_soc_component *component = dai->component;  in nau8315_daiops_trigger()
37 	if (!nau8315->enable)  in nau8315_daiops_trigger()
44 		if (nau8315->enpin_switch) {  in nau8315_daiops_trigger()
45 			gpiod_set_value(nau8315->enable, 1);  in nau8315_daiops_trigger()
46 			dev_dbg(component->dev, "set enable to 1");  in nau8315_daiops_trigger()
52 		gpiod_set_value(nau8315->enable, 0);  in nau8315_daiops_trigger()
53 		dev_dbg(component->dev, "set enable to 0");  in nau8315_daiops_trigger()
60 static int nau8315_enpin_event(struct snd_soc_dapm_widget *w,  in nau8315_enpin_event()
64 		snd_soc_dapm_to_component(w->dapm);  in nau8315_enpin_event()
69 		nau8315->enpin_switch = 1;  in nau8315_enpin_event()
71 		nau8315->enpin_switch = 0;  in nau8315_enpin_event()
76 static const struct snd_soc_dapm_widget nau8315_dapm_widgets[] = {
83 static const struct snd_soc_dapm_route nau8315_dapm_routes[] = {
88 static const struct snd_soc_component_driver nau8315_component_driver = {
98 static const struct snd_soc_dai_ops nau8315_dai_ops = {
105 static struct snd_soc_dai_driver nau8315_dai_driver = {
106 	.name = "nau8315-hifi",
117 static int nau8315_platform_probe(struct platform_device *pdev)  in nau8315_platform_probe()
121 	nau8315 = devm_kzalloc(&pdev->dev, sizeof(*nau8315), GFP_KERNEL);  in nau8315_platform_probe()
123 		return -ENOMEM;  in nau8315_platform_probe()
125 	nau8315->enable = devm_gpiod_get_optional(&pdev->dev,  in nau8315_platform_probe()
126 				"enable", GPIOD_OUT_LOW);  in nau8315_platform_probe()
127 	if (IS_ERR(nau8315->enable))  in nau8315_platform_probe()
128 		return PTR_ERR(nau8315->enable);  in nau8315_platform_probe()
130 	dev_set_drvdata(&pdev->dev, nau8315);  in nau8315_platform_probe()
132 	return devm_snd_soc_register_component(&pdev->dev,  in nau8315_platform_probe()
138 static const struct of_device_id nau8315_device_id[] = {
147 static const struct acpi_device_id nau8315_acpi_match[] = {
155 static struct platform_driver nau8315_platform_driver = {
165 MODULE_DESCRIPTION("ASoC NAU8315 Mono Class-D Amplifier Driver");