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- // SPDX-License-Identifier: GPL-2.0
- // ak4554.c
- //
- // Copyright (C) 2013 Renesas Solutions Corp.
- // Kuninori Morimoto <[email protected]>
- #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_rate = 1,
- };
- static const struct snd_soc_component_driver soc_component_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),
- .idle_bias_on = 1,
- .use_pmdown_time = 1,
- .endianness = 1,
- };
- static int ak4554_soc_probe(struct platform_device *pdev)
- {
- return devm_snd_soc_register_component(&pdev->dev,
- &soc_component_dev_ak4554,
- &ak4554_dai, 1);
- }
- 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,
- };
- module_platform_driver(ak4554_driver);
- MODULE_LICENSE("GPL v2");
- MODULE_DESCRIPTION("SoC AK4554 driver");
- MODULE_AUTHOR("Kuninori Morimoto <[email protected]>");
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