110 lines
3.0 KiB
C
110 lines
3.0 KiB
C
/*
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* ALSA SoC codec driver for HDMI audio codecs.
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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* Author: Ricardo Neri <ricardo.neri@ti.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as 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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/module.h>
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#include <sound/soc.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#define DRV_NAME "hdmi-audio-codec"
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static const struct snd_soc_dapm_widget hdmi_widgets[] = {
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SND_SOC_DAPM_INPUT("RX"),
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SND_SOC_DAPM_OUTPUT("TX"),
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};
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static const struct snd_soc_dapm_route hdmi_routes[] = {
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{ "Capture", NULL, "RX" },
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{ "TX", NULL, "Playback" },
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};
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static struct snd_soc_dai_driver hdmi_codec_dai = {
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.name = "hdmi-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 = 8,
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.rates = SNDRV_PCM_RATE_32000 |
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SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
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SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
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SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
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.sig_bits = 24,
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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_32000 |
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SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
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SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
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SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S24_LE,
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},
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};
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#ifdef CONFIG_OF
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static const struct of_device_id hdmi_audio_codec_ids[] = {
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{ .compatible = "linux,hdmi-audio", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, hdmi_audio_codec_ids);
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#endif
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static struct snd_soc_codec_driver hdmi_codec = {
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.dapm_widgets = hdmi_widgets,
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.num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
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.dapm_routes = hdmi_routes,
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.num_dapm_routes = ARRAY_SIZE(hdmi_routes),
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.ignore_pmdown_time = true,
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};
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static int hdmi_codec_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev, &hdmi_codec,
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&hdmi_codec_dai, 1);
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}
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static int hdmi_codec_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 struct platform_driver hdmi_codec_driver = {
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.driver = {
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.name = DRV_NAME,
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.of_match_table = of_match_ptr(hdmi_audio_codec_ids),
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},
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.probe = hdmi_codec_probe,
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.remove = hdmi_codec_remove,
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};
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module_platform_driver(hdmi_codec_driver);
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MODULE_AUTHOR("Ricardo Neri <ricardo.neri@ti.com>");
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MODULE_DESCRIPTION("ASoC generic HDMI codec driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:" DRV_NAME);
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