diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/Kconfig | 3 | ||||
| -rw-r--r-- | sound/soc/codecs/Makefile | 2 | ||||
| -rw-r--r-- | sound/soc/codecs/i2s_stub.c | 74 |
3 files changed, 79 insertions, 0 deletions
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 983d087aa92..8d6bd6b4709 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -258,6 +258,9 @@ config SND_SOC_CX20442 tristate depends on TTY +config SND_SOC_I2S_STUB + tristate + config SND_SOC_JZ4740_CODEC select REGMAP_MMIO tristate diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index bc126764a44..349b4aa5c9a 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -30,6 +30,7 @@ snd-soc-da732x-objs := da732x.o snd-soc-da9055-objs := da9055.o snd-soc-bt-sco-objs := bt-sco.o snd-soc-dmic-objs := dmic.o +snd-soc-i2s-stub-objs := i2s_stub.o snd-soc-isabelle-objs := isabelle.o snd-soc-jz4740-codec-objs := jz4740.o snd-soc-l3-objs := l3.o @@ -163,6 +164,7 @@ obj-$(CONFIG_SND_SOC_DA732X) += snd-soc-da732x.o obj-$(CONFIG_SND_SOC_DA9055) += snd-soc-da9055.o obj-$(CONFIG_SND_SOC_BT_SCO) += snd-soc-bt-sco.o obj-$(CONFIG_SND_SOC_DMIC) += snd-soc-dmic.o +obj-$(CONFIG_SND_SOC_I2S_STUB) += snd-soc-i2s-stub.o obj-$(CONFIG_SND_SOC_ISABELLE) += snd-soc-isabelle.o obj-$(CONFIG_SND_SOC_JZ4740_CODEC) += snd-soc-jz4740-codec.o obj-$(CONFIG_SND_SOC_L3) += snd-soc-l3.o diff --git a/sound/soc/codecs/i2s_stub.c b/sound/soc/codecs/i2s_stub.c new file mode 100644 index 00000000000..df6b08944ed --- /dev/null +++ b/sound/soc/codecs/i2s_stub.c @@ -0,0 +1,74 @@ +/* + * ALSA SoC I2S Stub Codec driver + * + * This driver is used by controllers which can operate in I2S mode with + * Stub codec driver for I2S mode. + * + * The code is based on sound/soc/codec/spdif_transceiver.c + * + * 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 <linux/moduleparam.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <sound/soc.h> +#include <sound/pcm.h> +#include <sound/initval.h> + + +#define I2S_STUB_RATES SNDRV_PCM_RATE_8000_192000 +#define I2S_STUB_FORMATS SNDRV_PCM_FMTBIT_S16_LE + +static struct snd_soc_codec_driver soc_codec_i2s_stub; + +static struct snd_soc_dai_driver i2s_stub_dai = { + .name = "i2s-stub-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 2, + .rates = I2S_STUB_RATES, + .formats = I2S_STUB_FORMATS, + }, +}; + +static int i2s_stub_probe(struct platform_device *pdev) +{ + return snd_soc_register_codec(&pdev->dev, &soc_codec_i2s_stub, + &i2s_stub_dai, 1); +} + +static int i2s_stub_remove(struct platform_device *pdev) +{ + snd_soc_unregister_codec(&pdev->dev); + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id i2s_stub_dt_ids[] = { + { .compatible = "linux,i2s-stub", }, + { } +}; +MODULE_DEVICE_TABLE(of, i2s_stub_dt_ids); +#endif + +static struct platform_driver i2s_stub_driver = { + .probe = i2s_stub_probe, + .remove = i2s_stub_remove, + .driver = { + .name = "i2s-stub", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(i2s_stub_dt_ids), + }, +}; + +module_platform_driver(i2s_stub_driver); + +MODULE_AUTHOR("Tushar Behera"); +MODULE_DESCRIPTION("I2S stub codec driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform: i2s-stub"); |