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/*
* Copyright (c) 2017 BayLibre, SAS.
* Author: Jerome Brunet <jbrunet@baylibre.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*/
#include <linux/module.h>
#include <sound/soc.h>
/*
* The everest 7134 is a very simple DA converter with no register
*/
static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
{
fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
SND_SOC_DAIFMT_MASTER_MASK);
if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS)) {
dev_err(codec_dai->dev, "Invalid DAI format\n");
return -EINVAL;
}
return 0;
}
static const struct snd_soc_dai_ops es7134_dai_ops = {
.set_fmt = es7134_set_fmt,
};
static struct snd_soc_dai_driver es7134_dai = {
.name = "es7134-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = (SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S18_3LE |
SNDRV_PCM_FMTBIT_S20_3LE |
SNDRV_PCM_FMTBIT_S24_3LE |
SNDRV_PCM_FMTBIT_S24_LE),
},
.ops = &es7134_dai_ops,
};
static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("AOUTL"),
SND_SOC_DAPM_OUTPUT("AOUTR"),
SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
{ "AOUTL", NULL, "DAC" },
{ "AOUTR", NULL, "DAC" },
};
static struct snd_soc_codec_driver es7134_codec_driver = {
.component_driver = {
.dapm_widgets = es7134_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets),
.dapm_routes = es7134_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes),
},
};
static int es7134_probe(struct platform_device *pdev)
{
return snd_soc_register_codec(&pdev->dev,
&es7134_codec_driver,
&es7134_dai, 1);
}
static int es7134_remove(struct platform_device *pdev)
{
snd_soc_unregister_codec(&pdev->dev);
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id es7134_ids[] = {
{ .compatible = "everest,es7134", },
{ .compatible = "everest,es7144", },
{ }
};
MODULE_DEVICE_TABLE(of, es7134_ids);
#endif
static struct platform_driver es7134_driver = {
.driver = {
.name = "es7134",
.of_match_table = of_match_ptr(es7134_ids),
},
.probe = es7134_probe,
.remove = es7134_remove,
};
module_platform_driver(es7134_driver);
MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
MODULE_LICENSE("GPL");
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