From ce97723802a6e68483111819f29d777e0ff0b975 Mon Sep 17 00:00:00 2001 From: DigitalDreamtime Date: Sat, 2 Jul 2016 16:26:19 +0100 Subject: [PATCH] Add support for Dion Audio LOCO DAC-AMP HAT Using dedicated machine driver and pcm5102a codec driver. Signed-off-by: DigitalDreamtime --- sound/soc/bcm/Kconfig | 7 +++ sound/soc/bcm/Makefile | 3 +- sound/soc/bcm/dionaudio_loco.c | 121 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 130 insertions(+), 1 deletion(-) create mode 100644 sound/soc/bcm/dionaudio_loco.c --- a/sound/soc/bcm/Kconfig +++ b/sound/soc/bcm/Kconfig @@ -109,3 +109,10 @@ config SND_DIGIDAC1_SOUNDCARD select SND_SOC_WM8741 help Say Y or M if you want to add support for Red Rocks Audio DigiDAC1 board. + +config SND_BCM2708_SOC_DIONAUDIO_LOCO + tristate "Support for Dion Audio LOCO DAC-AMP" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S + select SND_SOC_PCM5102a + help + Say Y or M if you want to add support for Dion Audio LOCO. --- a/sound/soc/bcm/Makefile +++ b/sound/soc/bcm/Makefile @@ -22,6 +22,7 @@ snd-soc-iqaudio-digi-objs := iqaudio_dig snd-soc-raspidac3-objs := raspidac3.o snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o +snd-soc-dionaudio-loco-objs := dionaudio_loco.o obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o @@ -36,4 +37,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIG obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o - +obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o --- /dev/null +++ b/sound/soc/bcm/dionaudio_loco.c @@ -0,0 +1,121 @@ +/* + * ASoC Driver for Dion Audio LOCO DAC-AMP + * + * Author: Miquel Blauw + * Copyright 2016 + * + * Based on the software of the RPi-DAC writen by Florian Meier + * + * 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. + * + * 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 +#include + +#include +#include +#include +#include +#include + +static int snd_rpi_dionaudio_loco_hw_params( + struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + + unsigned int sample_bits = + snd_pcm_format_physical_width(params_format(params)); + + return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2); +} + +/* machine stream operations */ +static struct snd_soc_ops snd_rpi_dionaudio_loco_ops = { + .hw_params = snd_rpi_dionaudio_loco_hw_params, +}; + +static struct snd_soc_dai_link snd_rpi_dionaudio_loco_dai[] = { +{ + .name = "DionAudio LOCO", + .stream_name = "DionAudio LOCO DAC-AMP", + .cpu_dai_name = "bcm2708-i2s.0", + .codec_dai_name = "pcm5102a-hifi", + .platform_name = "bcm2708-i2s.0", + .codec_name = "pcm5102a-codec", + .dai_fmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + .ops = &snd_rpi_dionaudio_loco_ops, +}, +}; + +/* audio machine driver */ +static struct snd_soc_card snd_rpi_dionaudio_loco = { + .name = "snd_rpi_dionaudio_loco", + .dai_link = snd_rpi_dionaudio_loco_dai, + .num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_dai), +}; + +static int snd_rpi_dionaudio_loco_probe(struct platform_device *pdev) +{ + struct device_node *np; + int ret = 0; + + snd_rpi_dionaudio_loco.dev = &pdev->dev; + + np = pdev->dev.of_node; + if (np) { + struct snd_soc_dai_link *dai = &snd_rpi_dionaudio_loco_dai[0]; + struct device_node *i2s_np; + + i2s_np = of_parse_phandle(np, "i2s-controller", 0); + if (i2s_np) { + dai->cpu_dai_name = NULL; + dai->cpu_of_node = i2s_np; + dai->platform_name = NULL; + dai->platform_of_node = i2s_np; + } + } + + ret = snd_soc_register_card(&snd_rpi_dionaudio_loco); + if (ret) + dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", + ret); + + return ret; +} + +static int snd_rpi_dionaudio_loco_remove(struct platform_device *pdev) +{ + return snd_soc_unregister_card(&snd_rpi_dionaudio_loco); +} + +static const struct of_device_id snd_rpi_dionaudio_loco_of_match[] = { + { .compatible = "dionaudio,loco-pcm5242-tpa3118", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, snd_rpi_dionaudio_loco_of_match); + +static struct platform_driver snd_rpi_dionaudio_loco_driver = { + .driver = { + .name = "snd-dionaudio-loco", + .owner = THIS_MODULE, + .of_match_table = snd_rpi_dionaudio_loco_of_match, + }, + .probe = snd_rpi_dionaudio_loco_probe, + .remove = snd_rpi_dionaudio_loco_remove, +}; + +module_platform_driver(snd_rpi_dionaudio_loco_driver); + +MODULE_AUTHOR("Miquel Blauw "); +MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO"); +MODULE_LICENSE("GPL v2");