106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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* ak4554.c
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*
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* Copyright (C) 2013 Renesas Solutions Corp.
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* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <sound/soc.h>
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/*
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* ak4554 is very simple DA/AD converter which has no setting register.
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*
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* CAUTION
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*
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* ak4554 playback format is SND_SOC_DAIFMT_RIGHT_J,
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* and, capture format is SND_SOC_DAIFMT_LEFT_J
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* on same bit clock, LR clock.
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* But, this driver doesn't have snd_soc_dai_ops :: set_fmt
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*
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* CPU/Codec DAI image
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*
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* CPU-DAI1 (plaback only fmt = RIGHT_J) --+-- ak4554
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* |
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* CPU-DAI2 (capture only fmt = LEFT_J) ---+
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*/
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static const struct snd_soc_dapm_widget ak4554_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("AINL"),
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SND_SOC_DAPM_INPUT("AINR"),
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SND_SOC_DAPM_OUTPUT("AOUTL"),
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SND_SOC_DAPM_OUTPUT("AOUTR"),
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};
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static const struct snd_soc_dapm_route ak4554_dapm_routes[] = {
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{ "Capture", NULL, "AINL" },
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{ "Capture", NULL, "AINR" },
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{ "AOUTL", NULL, "Playback" },
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{ "AOUTR", NULL, "Playback" },
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};
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static struct snd_soc_dai_driver ak4554_dai = {
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.name = "ak4554-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_8000_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_8000_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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.symmetric_rates = 1,
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};
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static struct snd_soc_codec_driver soc_codec_dev_ak4554 = {
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.dapm_widgets = ak4554_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ak4554_dapm_widgets),
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.dapm_routes = ak4554_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(ak4554_dapm_routes),
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};
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static int ak4554_soc_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev,
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&soc_codec_dev_ak4554,
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&ak4554_dai, 1);
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}
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static int ak4554_soc_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_codec(&pdev->dev);
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return 0;
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}
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static const struct of_device_id ak4554_of_match[] = {
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{ .compatible = "asahi-kasei,ak4554" },
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{},
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};
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MODULE_DEVICE_TABLE(of, ak4554_of_match);
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static struct platform_driver ak4554_driver = {
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.driver = {
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.name = "ak4554-adc-dac",
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.of_match_table = ak4554_of_match,
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},
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.probe = ak4554_soc_probe,
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.remove = ak4554_soc_remove,
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};
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module_platform_driver(ak4554_driver);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("SoC AK4554 driver");
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MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
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