cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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gtm601.c (2791B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * This is a simple driver for the GTM601 Voice PCM interface
      4 *
      5 * Copyright (C) 2015 Goldelico GmbH
      6 *
      7 * Author: Marek Belisko <marek@goldelico.com>
      8 *
      9 * Based on wm8727.c driver
     10 */
     11
     12#include <linux/init.h>
     13#include <linux/slab.h>
     14#include <linux/module.h>
     15#include <linux/kernel.h>
     16#include <linux/of_device.h>
     17#include <sound/core.h>
     18#include <sound/pcm.h>
     19#include <sound/initval.h>
     20#include <sound/soc.h>
     21
     22static const struct snd_soc_dapm_widget gtm601_dapm_widgets[] = {
     23	SND_SOC_DAPM_OUTPUT("AOUT"),
     24	SND_SOC_DAPM_INPUT("AIN"),
     25};
     26
     27static const struct snd_soc_dapm_route gtm601_dapm_routes[] = {
     28	{ "AOUT", NULL, "Playback" },
     29	{ "Capture", NULL, "AIN" },
     30};
     31
     32static struct snd_soc_dai_driver gtm601_dai = {
     33	.name = "gtm601",
     34	.playback = {
     35		.stream_name = "Playback",
     36		.channels_min = 1,
     37		.channels_max = 1,
     38		.rates = SNDRV_PCM_RATE_8000,
     39		.formats = SNDRV_PCM_FMTBIT_S16_LE,
     40		},
     41	.capture = {
     42		.stream_name = "Capture",
     43		.channels_min = 1,
     44		.channels_max = 1,
     45		.rates = SNDRV_PCM_RATE_8000,
     46		.formats = SNDRV_PCM_FMTBIT_S16_LE,
     47	},
     48};
     49
     50static struct snd_soc_dai_driver bm818_dai = {
     51	.name = "bm818",
     52	.playback = {
     53		.stream_name = "Playback",
     54		.channels_min = 2,
     55		.channels_max = 2,
     56		.rates = SNDRV_PCM_RATE_48000,
     57		.formats = SNDRV_PCM_FMTBIT_S16_LE,
     58	},
     59	.capture = {
     60		.stream_name = "Capture",
     61		.channels_min = 2,
     62		.channels_max = 2,
     63		.rates = SNDRV_PCM_RATE_48000,
     64		.formats = SNDRV_PCM_FMTBIT_S16_LE,
     65	},
     66};
     67
     68static const struct snd_soc_component_driver soc_component_dev_gtm601 = {
     69	.dapm_widgets		= gtm601_dapm_widgets,
     70	.num_dapm_widgets	= ARRAY_SIZE(gtm601_dapm_widgets),
     71	.dapm_routes		= gtm601_dapm_routes,
     72	.num_dapm_routes	= ARRAY_SIZE(gtm601_dapm_routes),
     73	.idle_bias_on		= 1,
     74	.use_pmdown_time	= 1,
     75	.endianness		= 1,
     76	.non_legacy_dai_naming	= 1,
     77};
     78
     79static int gtm601_platform_probe(struct platform_device *pdev)
     80{
     81	const struct snd_soc_dai_driver *dai_driver;
     82
     83	dai_driver = of_device_get_match_data(&pdev->dev);
     84
     85	return devm_snd_soc_register_component(&pdev->dev,
     86			&soc_component_dev_gtm601,
     87			(struct snd_soc_dai_driver *)dai_driver, 1);
     88}
     89
     90static const struct of_device_id gtm601_codec_of_match[] __maybe_unused = {
     91	{ .compatible = "option,gtm601", .data = (void *)&gtm601_dai },
     92	{ .compatible = "broadmobi,bm818", .data = (void *)&bm818_dai },
     93	{},
     94};
     95MODULE_DEVICE_TABLE(of, gtm601_codec_of_match);
     96
     97static struct platform_driver gtm601_codec_driver = {
     98	.driver = {
     99		.name = "gtm601",
    100		.of_match_table = of_match_ptr(gtm601_codec_of_match),
    101	},
    102	.probe = gtm601_platform_probe,
    103};
    104
    105module_platform_driver(gtm601_codec_driver);
    106
    107MODULE_DESCRIPTION("ASoC gtm601 driver");
    108MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>");
    109MODULE_LICENSE("GPL");
    110MODULE_ALIAS("platform:gtm601");