2 * ALSA SoC codec driver for HDMI audio codecs.
3 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
4 * Author: Ricardo Neri <ricardo.neri@ti.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21 #include <linux/module.h>
22 #include <sound/soc.h>
23 #include <linux/of_device.h>
25 #define DRV_NAME "hdmi-audio-codec"
27 static const struct snd_soc_dapm_widget hdmi_widgets[] = {
28 SND_SOC_DAPM_INPUT("RX"),
29 SND_SOC_DAPM_OUTPUT("TX"),
32 static const struct snd_soc_dapm_route hdmi_routes[] = {
33 { "Capture", NULL, "RX" },
34 { "TX", NULL, "Playback" },
37 static struct snd_soc_dai_driver hdmi_codec_dai = {
40 .stream_name = "Playback",
43 .rates = SNDRV_PCM_RATE_32000 |
44 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
45 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
46 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
47 .formats = SNDRV_PCM_FMTBIT_S16_LE |
48 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
51 .stream_name = "Capture",
54 .rates = SNDRV_PCM_RATE_32000 |
55 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
56 SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
57 SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
58 .formats = SNDRV_PCM_FMTBIT_S16_LE |
59 SNDRV_PCM_FMTBIT_S24_LE,
65 static const struct of_device_id hdmi_audio_codec_ids[] = {
66 { .compatible = "linux,hdmi-audio", },
69 MODULE_DEVICE_TABLE(of, hdmi_audio_codec_ids);
72 static struct snd_soc_codec_driver hdmi_codec = {
73 .dapm_widgets = hdmi_widgets,
74 .num_dapm_widgets = ARRAY_SIZE(hdmi_widgets),
75 .dapm_routes = hdmi_routes,
76 .num_dapm_routes = ARRAY_SIZE(hdmi_routes),
79 static int hdmi_codec_probe(struct platform_device *pdev)
81 return snd_soc_register_codec(&pdev->dev, &hdmi_codec,
85 static int hdmi_codec_remove(struct platform_device *pdev)
87 snd_soc_unregister_codec(&pdev->dev);
91 static struct platform_driver hdmi_codec_driver = {
95 .of_match_table = of_match_ptr(hdmi_audio_codec_ids),
98 .probe = hdmi_codec_probe,
99 .remove = hdmi_codec_remove,
102 module_platform_driver(hdmi_codec_driver);
104 MODULE_AUTHOR("Ricardo Neri <ricardo.neri@ti.com>");
105 MODULE_DESCRIPTION("ASoC generic HDMI codec driver");
106 MODULE_LICENSE("GPL");
107 MODULE_ALIAS("platform:" DRV_NAME);