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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ak4554.c (2462B)

      1// SPDX-License-Identifier: GPL-2.0
      2// ak4554.c
      3//
      4// Copyright (C) 2013 Renesas Solutions Corp.
      5// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      6
      7#include <linux/module.h>
      8#include <sound/soc.h>
      9
     10/*
     11 * ak4554 is very simple DA/AD converter which has no setting register.
     12 *
     13 * CAUTION
     14 *
     15 * ak4554 playback format is SND_SOC_DAIFMT_RIGHT_J,
     16 * and,   capture  format is SND_SOC_DAIFMT_LEFT_J
     17 * on same bit clock, LR clock.
     18 * But, this driver doesn't have snd_soc_dai_ops :: set_fmt
     19 *
     20 * CPU/Codec DAI image
     21 *
     22 * CPU-DAI1 (plaback only fmt = RIGHT_J) --+-- ak4554
     23 *					   |
     24 * CPU-DAI2 (capture only fmt = LEFT_J) ---+
     25 */
     26
     27static const struct snd_soc_dapm_widget ak4554_dapm_widgets[] = {
     28SND_SOC_DAPM_INPUT("AINL"),
     29SND_SOC_DAPM_INPUT("AINR"),
     30
     31SND_SOC_DAPM_OUTPUT("AOUTL"),
     32SND_SOC_DAPM_OUTPUT("AOUTR"),
     33};
     34
     35static const struct snd_soc_dapm_route ak4554_dapm_routes[] = {
     36	{ "Capture", NULL, "AINL" },
     37	{ "Capture", NULL, "AINR" },
     38
     39	{ "AOUTL", NULL, "Playback" },
     40	{ "AOUTR", NULL, "Playback" },
     41};
     42
     43static struct snd_soc_dai_driver ak4554_dai = {
     44	.name = "ak4554-hifi",
     45	.playback = {
     46		.stream_name = "Playback",
     47		.channels_min = 2,
     48		.channels_max = 2,
     49		.rates = SNDRV_PCM_RATE_8000_48000,
     50		.formats = SNDRV_PCM_FMTBIT_S16_LE,
     51	},
     52	.capture = {
     53		.stream_name = "Capture",
     54		.channels_min = 2,
     55		.channels_max = 2,
     56		.rates = SNDRV_PCM_RATE_8000_48000,
     57		.formats = SNDRV_PCM_FMTBIT_S16_LE,
     58	},
     59	.symmetric_rate = 1,
     60};
     61
     62static const struct snd_soc_component_driver soc_component_dev_ak4554 = {
     63	.dapm_widgets		= ak4554_dapm_widgets,
     64	.num_dapm_widgets	= ARRAY_SIZE(ak4554_dapm_widgets),
     65	.dapm_routes		= ak4554_dapm_routes,
     66	.num_dapm_routes	= ARRAY_SIZE(ak4554_dapm_routes),
     67	.idle_bias_on		= 1,
     68	.use_pmdown_time	= 1,
     69	.endianness		= 1,
     70	.non_legacy_dai_naming	= 1,
     71};
     72
     73static int ak4554_soc_probe(struct platform_device *pdev)
     74{
     75	return devm_snd_soc_register_component(&pdev->dev,
     76				      &soc_component_dev_ak4554,
     77				      &ak4554_dai, 1);
     78}
     79
     80static const struct of_device_id ak4554_of_match[] = {
     81	{ .compatible = "asahi-kasei,ak4554" },
     82	{},
     83};
     84MODULE_DEVICE_TABLE(of, ak4554_of_match);
     85
     86static struct platform_driver ak4554_driver = {
     87	.driver = {
     88		.name = "ak4554-adc-dac",
     89		.of_match_table = ak4554_of_match,
     90	},
     91	.probe	= ak4554_soc_probe,
     92};
     93module_platform_driver(ak4554_driver);
     94
     95MODULE_LICENSE("GPL v2");
     96MODULE_DESCRIPTION("SoC AK4554 driver");
     97MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");