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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 and only version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 294 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.825281744@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
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*
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* max98357a.c -- MAX98357A ALSA SoC Codec driver
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*/
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#include <linux/acpi.h>
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#include <linux/device.h>
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#include <linux/err.h>
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#include <linux/gpio.h>
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#include <linux/gpio/consumer.h>
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#include <linux/kernel.h>
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dai.h>
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#include <sound/soc-dapm.h>
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static int max98357a_daiops_trigger(struct snd_pcm_substream *substream,
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int cmd, struct snd_soc_dai *dai)
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{
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struct gpio_desc *sdmode = snd_soc_dai_get_drvdata(dai);
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if (!sdmode)
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return 0;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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gpiod_set_value(sdmode, 1);
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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gpiod_set_value(sdmode, 0);
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break;
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}
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return 0;
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}
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static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
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SND_SOC_DAPM_OUTPUT("Speaker"),
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};
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static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
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{"Speaker", NULL, "HiFi Playback"},
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};
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static int max98357a_component_probe(struct snd_soc_component *component)
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{
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struct gpio_desc *sdmode;
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sdmode = devm_gpiod_get_optional(component->dev, "sdmode", GPIOD_OUT_LOW);
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if (IS_ERR(sdmode))
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return PTR_ERR(sdmode);
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snd_soc_component_set_drvdata(component, sdmode);
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return 0;
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}
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static const struct snd_soc_component_driver max98357a_component_driver = {
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.probe = max98357a_component_probe,
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.dapm_widgets = max98357a_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(max98357a_dapm_widgets),
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.dapm_routes = max98357a_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(max98357a_dapm_routes),
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.idle_bias_on = 1,
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.use_pmdown_time = 1,
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.endianness = 1,
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.non_legacy_dai_naming = 1,
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};
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static const struct snd_soc_dai_ops max98357a_dai_ops = {
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.trigger = max98357a_daiops_trigger,
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};
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static struct snd_soc_dai_driver max98357a_dai_driver = {
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.name = "HiFi",
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.playback = {
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.stream_name = "HiFi Playback",
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.formats = SNDRV_PCM_FMTBIT_S16 |
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SNDRV_PCM_FMTBIT_S24 |
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SNDRV_PCM_FMTBIT_S32,
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.rates = SNDRV_PCM_RATE_8000 |
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SNDRV_PCM_RATE_16000 |
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SNDRV_PCM_RATE_32000 |
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SNDRV_PCM_RATE_44100 |
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SNDRV_PCM_RATE_48000 |
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SNDRV_PCM_RATE_88200 |
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SNDRV_PCM_RATE_96000,
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.rate_min = 8000,
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.rate_max = 96000,
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.channels_min = 1,
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.channels_max = 2,
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},
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.ops = &max98357a_dai_ops,
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};
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static int max98357a_platform_probe(struct platform_device *pdev)
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{
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return devm_snd_soc_register_component(&pdev->dev,
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&max98357a_component_driver,
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&max98357a_dai_driver, 1);
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}
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static int max98357a_platform_remove(struct platform_device *pdev)
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{
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return 0;
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}
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#ifdef CONFIG_OF
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static const struct of_device_id max98357a_device_id[] = {
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{ .compatible = "maxim,max98357a" },
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{}
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};
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MODULE_DEVICE_TABLE(of, max98357a_device_id);
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#endif
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#ifdef CONFIG_ACPI
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static const struct acpi_device_id max98357a_acpi_match[] = {
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{ "MX98357A", 0 },
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{},
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};
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MODULE_DEVICE_TABLE(acpi, max98357a_acpi_match);
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#endif
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static struct platform_driver max98357a_platform_driver = {
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.driver = {
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.name = "max98357a",
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.of_match_table = of_match_ptr(max98357a_device_id),
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.acpi_match_table = ACPI_PTR(max98357a_acpi_match),
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},
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.probe = max98357a_platform_probe,
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.remove = max98357a_platform_remove,
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};
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module_platform_driver(max98357a_platform_driver);
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MODULE_DESCRIPTION("Maxim MAX98357A Codec Driver");
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MODULE_LICENSE("GPL v2");
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