Project import generated by Copybara.
GitOrigin-RevId: 9654cb29c4d4a7d7b454fb9a49681230540464e3
diff --git a/sound/soc/codecs/amlogic/dummy_codec.c b/sound/soc/codecs/amlogic/dummy_codec.c
new file mode 100644
index 0000000..4444a3f
--- /dev/null
+++ b/sound/soc/codecs/amlogic/dummy_codec.c
@@ -0,0 +1,183 @@
+/*
+ * sound/soc/codecs/amlogic/dummy_codec.c
+ *
+ * Copyright (C) 2017 Amlogic, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ */
+
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/tlv.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <linux/of.h>
+
+struct dummy_codec_private {
+ struct snd_soc_codec codec;
+};
+
+#define DUMMY_CODEC_RATES (SNDRV_PCM_RATE_8000_192000)
+#define DUMMY_CODEC_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+static int dummy_codec_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ return 0;
+}
+
+static int dummy_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ return 0;
+}
+
+static int dummy_codec_mute(struct snd_soc_dai *dai, int mute)
+{
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget dummy_codec_dapm_widgets[] = {
+ /* Output Side */
+ /* DACs */
+ SND_SOC_DAPM_DAC("Left DAC", "HIFI Playback",
+ SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("Right DAC", "HIFI Playback",
+ SND_SOC_NOPM, 7, 0),
+
+ /* Output Lines */
+ SND_SOC_DAPM_OUTPUT("LOUTL"),
+ SND_SOC_DAPM_OUTPUT("LOUTR"),
+
+};
+
+static const struct snd_soc_dapm_route dummy_codec_dapm_routes[] = {
+
+ {"LOUTL", NULL, "Left DAC"},
+ {"LOUTR", NULL, "Right DAC"},
+};
+
+static struct snd_soc_dai_ops dummy_codec_ops = {
+ .hw_params = dummy_codec_pcm_hw_params,
+ .set_fmt = dummy_codec_set_dai_fmt,
+ .digital_mute = dummy_codec_mute,
+};
+
+struct snd_soc_dai_driver dummy_codec_dai = {
+ .name = "dummy",
+ .id = 1,
+ .playback = {
+ .stream_name = "HIFI Playback",
+ .channels_min = 1,
+ .channels_max = 32,
+ .rates = DUMMY_CODEC_RATES,
+ .formats = DUMMY_CODEC_FORMATS,
+ },
+ .capture = {
+ .stream_name = "HIFI Capture",
+ .channels_min = 1,
+ .channels_max = 32,
+ .rates = DUMMY_CODEC_RATES,
+ .formats = DUMMY_CODEC_FORMATS,
+ },
+ .ops = &dummy_codec_ops,
+};
+
+static int dummy_codec_probe(struct snd_soc_codec *codec)
+{
+ return 0;
+}
+
+static int dummy_codec_remove(struct snd_soc_codec *codec)
+{
+ return 0;
+};
+
+struct snd_soc_codec_driver soc_codec_dev_dummy_codec = {
+ .probe = dummy_codec_probe,
+ .remove = dummy_codec_remove,
+ .component_driver = {
+ .dapm_widgets = dummy_codec_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(dummy_codec_dapm_widgets),
+ .dapm_routes = dummy_codec_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(dummy_codec_dapm_routes),
+ }
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id amlogic_codec_dt_match[] = {
+ {.compatible = "amlogic, aml_dummy_codec",
+ },
+ {},
+};
+#else
+#define amlogic_codec_dt_match NULL
+#endif
+
+static int dummy_codec_platform_probe(struct platform_device *pdev)
+{
+ struct dummy_codec_private *dummy_codec;
+ int ret;
+
+ dummy_codec = kzalloc(sizeof(struct dummy_codec_private), GFP_KERNEL);
+ if (dummy_codec == NULL)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, dummy_codec);
+ ret = snd_soc_register_codec(&pdev->dev, &soc_codec_dev_dummy_codec,
+ &dummy_codec_dai, 1);
+
+ if (ret < 0)
+ kfree(dummy_codec);
+
+ return ret;
+}
+
+static int dummy_codec_platform_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+ kfree(platform_get_drvdata(pdev));
+ return 0;
+}
+
+static struct platform_driver dummy_codec_platform_driver = {
+ .driver = {
+ .name = "dummy",
+ .owner = THIS_MODULE,
+ .of_match_table = amlogic_codec_dt_match,
+ },
+ .probe = dummy_codec_platform_probe,
+ .remove = dummy_codec_platform_remove,
+};
+
+static int __init dummy_codec_init(void)
+{
+ return platform_driver_register(&dummy_codec_platform_driver);
+}
+
+static void __exit dummy_codec_exit(void)
+{
+ platform_driver_unregister(&dummy_codec_platform_driver);
+}
+
+module_init(dummy_codec_init);
+module_exit(dummy_codec_exit);
+
+MODULE_AUTHOR("AMLogic, Inc.");
+MODULE_DESCRIPTION("ASoC dummy_codec driver");
+MODULE_LICENSE("GPL");
