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