From: Vipin Kumar vipin.kumar@st.com
This patch adds the support for spdif in audio codec.
Signed-off-by: vipin Kumar vipin.kumar@st.com Signed-off-by: Rajeev Kumar rajeev-dlh.kumar@st.com --- sound/soc/codecs/Makefile | 2 +- sound/soc/codecs/spdif_receiver.c | 76 +++++++++++++++++++++++++++++++++++++ 2 files changed, 77 insertions(+), 1 deletions(-) create mode 100644 sound/soc/codecs/spdif_receiver.c
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index fc27fec..20b2d57 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -41,7 +41,7 @@ snd-soc-alc5623-objs := alc5623.o snd-soc-alc5632-objs := alc5632.o snd-soc-sigmadsp-objs := sigmadsp.o snd-soc-sn95031-objs := sn95031.o -snd-soc-spdif-objs := spdif_transciever.o +snd-soc-spdif-objs := spdif_transciever.o spdif_receiver.o snd-soc-ssm2602-objs := ssm2602.o snd-soc-sta32x-objs := sta32x.o snd-soc-stac9766-objs := stac9766.o diff --git a/sound/soc/codecs/spdif_receiver.c b/sound/soc/codecs/spdif_receiver.c new file mode 100644 index 0000000..229f49e --- /dev/null +++ b/sound/soc/codecs/spdif_receiver.c @@ -0,0 +1,76 @@ +/* + * ALSA SoC SPDIF DIR (Digital Interface Reciever) driver + * + * Based on ALSA SoC SPDIF DIT driver + * + * This driver is used by controllers which can operate in DIR (SPDI/F) where + * no codec is needed. This file provides stub codec that can be used + * in these configurations. SPEAr SPDIF IN Audio controller uses this driver. + * + * Author: Vipin Kumar, vipin.kumar@st.com + * Copyright: (C) 2012 ST Microelectronics + * + * 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 <sound/soc.h> +#include <sound/pcm.h> +#include <sound/initval.h> + +MODULE_LICENSE("GPL"); + +#define STUB_RATES SNDRV_PCM_RATE_8000_192000 +#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE) + +static struct snd_soc_codec_driver soc_codec_spdif_dir; + +static struct snd_soc_dai_driver dir_stub_dai = { + .name = "dir-hifi", + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 384, + .rates = STUB_RATES, + .formats = STUB_FORMATS, + }, +}; + +static int spdif_dir_probe(struct platform_device *pdev) +{ + return snd_soc_register_codec(&pdev->dev, &soc_codec_spdif_dir, + &dir_stub_dai, 1); +} + +static int spdif_dir_remove(struct platform_device *pdev) +{ + snd_soc_unregister_codec(&pdev->dev); + return 0; +} + +static struct platform_driver spdif_dir_driver = { + .probe = spdif_dir_probe, + .remove = spdif_dir_remove, + .driver = { + .name = "spdif-dir", + .owner = THIS_MODULE, + }, +}; + +static int __init dir_modinit(void) +{ + return platform_driver_register(&spdif_dir_driver); +} + +static void __exit dir_exit(void) +{ + platform_driver_unregister(&spdif_dir_driver); +} + +module_init(dir_modinit); +module_exit(dir_exit);