117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/*
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* Copyright (c) 2017 BayLibre, SAS.
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* Author: Jerome Brunet <jbrunet@baylibre.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 version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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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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* The everest 7134 is a very simple DA converter with no register
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*/
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static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
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{
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fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
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SND_SOC_DAIFMT_MASTER_MASK);
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if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS)) {
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dev_err(codec_dai->dev, "Invalid DAI format\n");
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return -EINVAL;
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}
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return 0;
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}
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static const struct snd_soc_dai_ops es7134_dai_ops = {
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.set_fmt = es7134_set_fmt,
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};
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static struct snd_soc_dai_driver es7134_dai = {
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.name = "es7134-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_192000,
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.formats = (SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S18_3LE |
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SNDRV_PCM_FMTBIT_S20_3LE |
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SNDRV_PCM_FMTBIT_S24_3LE |
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SNDRV_PCM_FMTBIT_S24_LE),
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},
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.ops = &es7134_dai_ops,
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};
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static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
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SND_SOC_DAPM_OUTPUT("AOUTL"),
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SND_SOC_DAPM_OUTPUT("AOUTR"),
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SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
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};
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static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
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{ "AOUTL", NULL, "DAC" },
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{ "AOUTR", NULL, "DAC" },
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};
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static const struct snd_soc_codec_driver es7134_codec_driver = {
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.component_driver = {
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.dapm_widgets = es7134_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets),
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.dapm_routes = es7134_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes),
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},
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};
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static int es7134_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev,
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&es7134_codec_driver,
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&es7134_dai, 1);
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}
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static int es7134_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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#ifdef CONFIG_OF
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static const struct of_device_id es7134_ids[] = {
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{ .compatible = "everest,es7134", },
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{ .compatible = "everest,es7144", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, es7134_ids);
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#endif
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static struct platform_driver es7134_driver = {
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.driver = {
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.name = "es7134",
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.of_match_table = of_match_ptr(es7134_ids),
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},
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.probe = es7134_probe,
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.remove = es7134_remove,
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};
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module_platform_driver(es7134_driver);
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MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
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MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
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MODULE_LICENSE("GPL");
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