From d6d7fceabc82d8d12f3dffafe68a0f578725e477 Mon Sep 17 00:00:00 2001 From: Florian Meier Date: Fri, 6 Dec 2013 20:50:28 +0100 Subject: [PATCH 039/222] ASoC: BCM2708: Add support for RPi-DAC This adds a machine driver for the RPi-DAC. Signed-off-by: Florian Meier --- arch/arm/mach-bcm2708/bcm2708.c | 19 ++++++++ sound/soc/bcm/Kconfig | 7 +++ sound/soc/bcm/Makefile | 2 + sound/soc/bcm/rpi-dac.c | 97 +++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/Kconfig | 4 ++ sound/soc/codecs/Makefile | 2 + sound/soc/codecs/pcm1794a.c | 62 ++++++++++++++++++++++++++ 7 files changed, 193 insertions(+) create mode 100644 sound/soc/bcm/rpi-dac.c create mode 100644 sound/soc/codecs/pcm1794a.c --- a/arch/arm/mach-bcm2708/bcm2708.c +++ b/arch/arm/mach-bcm2708/bcm2708.c @@ -652,6 +652,20 @@ static struct platform_device snd_pcm510 }; #endif +#if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE) +static struct platform_device snd_rpi_dac_device = { + .name = "snd-rpi-dac", + .id = 0, + .num_resources = 0, +}; + +static struct platform_device snd_pcm1794a_codec_device = { + .name = "pcm1794a-codec", + .id = -1, + .num_resources = 0, +}; +#endif + int __init bcm_register_device(struct platform_device *pdev) { int ret; @@ -825,6 +839,11 @@ void __init bcm2708_init(void) bcm_register_device_dt(&snd_pcm5102a_codec_device); #endif +#if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE) + bcm_register_device_dt(&snd_rpi_dac_device); + bcm_register_device_dt(&snd_pcm1794a_codec_device); +#endif + if (!use_dt) { for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { struct amba_device *d = amba_devs[i]; --- a/sound/soc/bcm/Kconfig +++ b/sound/soc/bcm/Kconfig @@ -25,3 +25,10 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC select SND_SOC_PCM5102A help Say Y or M if you want to add support for HifiBerry DAC. + +config SND_BCM2708_SOC_RPI_DAC + tristate "Support for RPi-DAC" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S + select SND_SOC_PCM1794A + help + Say Y or M if you want to add support for RPi-DAC. --- a/sound/soc/bcm/Makefile +++ b/sound/soc/bcm/Makefile @@ -10,5 +10,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd # BCM2708 Machine Support snd-soc-hifiberry-dac-objs := hifiberry_dac.o +snd-soc-rpi-dac-objs := rpi-dac.o obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o +obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o --- /dev/null +++ b/sound/soc/bcm/rpi-dac.c @@ -0,0 +1,97 @@ +/* + * ASoC Driver for RPi-DAC. + * + * Author: Florian Meier + * Copyright 2013 + * + * 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_rpi_dac_init(struct snd_soc_pcm_runtime *rtd) +{ + return 0; +} + +static int snd_rpi_rpi_dac_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; + + return snd_soc_dai_set_bclk_ratio(cpu_dai, 32*2); +} + +/* machine stream operations */ +static struct snd_soc_ops snd_rpi_rpi_dac_ops = { + .hw_params = snd_rpi_rpi_dac_hw_params, +}; + +static struct snd_soc_dai_link snd_rpi_rpi_dac_dai[] = { +{ + .name = "RPi-DAC", + .stream_name = "RPi-DAC HiFi", + .cpu_dai_name = "bcm2708-i2s.0", + .codec_dai_name = "pcm1794a-hifi", + .platform_name = "bcm2708-i2s.0", + .codec_name = "pcm1794a-codec", + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + .ops = &snd_rpi_rpi_dac_ops, + .init = snd_rpi_rpi_dac_init, +}, +}; + +/* audio machine driver */ +static struct snd_soc_card snd_rpi_rpi_dac = { + .name = "snd_rpi_rpi_dac", + .dai_link = snd_rpi_rpi_dac_dai, + .num_links = ARRAY_SIZE(snd_rpi_rpi_dac_dai), +}; + +static int snd_rpi_rpi_dac_probe(struct platform_device *pdev) +{ + int ret = 0; + + snd_rpi_rpi_dac.dev = &pdev->dev; + ret = snd_soc_register_card(&snd_rpi_rpi_dac); + if (ret) + dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret); + + return ret; +} + +static int snd_rpi_rpi_dac_remove(struct platform_device *pdev) +{ + return snd_soc_unregister_card(&snd_rpi_rpi_dac); +} + +static struct platform_driver snd_rpi_rpi_dac_driver = { + .driver = { + .name = "snd-rpi-dac", + .owner = THIS_MODULE, + }, + .probe = snd_rpi_rpi_dac_probe, + .remove = snd_rpi_rpi_dac_remove, +}; + +module_platform_driver(snd_rpi_rpi_dac_driver); + +MODULE_AUTHOR("Florian Meier "); +MODULE_DESCRIPTION("ASoC Driver for RPi-DAC"); +MODULE_LICENSE("GPL v2"); --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -84,6 +84,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_PCM512x_SPI if SPI_MASTER select SND_SOC_RT286 if I2C select SND_SOC_PCM5102A if I2C + select SND_SOC_PCM1794A if I2C select SND_SOC_RT5631 if I2C select SND_SOC_RT5640 if I2C select SND_SOC_RT5645 if I2C @@ -512,6 +513,9 @@ config SND_SOC_RT286 tristate depends on I2C +config SND_SOC_PCM1794A + tristate + config SND_SOC_PCM5102A tristate --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -78,6 +78,7 @@ snd-soc-pcm512x-i2c-objs := pcm512x-i2c. snd-soc-pcm512x-spi-objs := pcm512x-spi.o snd-soc-rl6231-objs := rl6231.o snd-soc-rt286-objs := rt286.o +snd-soc-pcm1794a-objs := pcm1794a.o snd-soc-pcm5102a-objs := pcm5102a.o snd-soc-rt5631-objs := rt5631.o snd-soc-rt5640-objs := rt5640.o @@ -264,6 +265,7 @@ obj-$(CONFIG_SND_SOC_PCM512x_I2C) += snd obj-$(CONFIG_SND_SOC_PCM512x_SPI) += snd-soc-pcm512x-spi.o obj-$(CONFIG_SND_SOC_RL6231) += snd-soc-rl6231.o obj-$(CONFIG_SND_SOC_RT286) += snd-soc-rt286.o +obj-$(CONFIG_SND_SOC_PCM1794A) += snd-soc-pcm1794a.o obj-$(CONFIG_SND_SOC_PCM5102A) += snd-soc-pcm5102a.o obj-$(CONFIG_SND_SOC_RT5631) += snd-soc-rt5631.o obj-$(CONFIG_SND_SOC_RT5640) += snd-soc-rt5640.o --- /dev/null +++ b/sound/soc/codecs/pcm1794a.c @@ -0,0 +1,62 @@ +/* + * Driver for the PCM1794A codec + * + * Author: Florian Meier + * Copyright 2013 + * + * 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 + +static struct snd_soc_dai_driver pcm1794a_dai = { + .name = "pcm1794a-hifi", + .playback = { + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S24_LE + }, +}; + +static struct snd_soc_codec_driver soc_codec_dev_pcm1794a; + +static int pcm1794a_probe(struct platform_device *pdev) +{ + return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_pcm1794a, + &pcm1794a_dai, 1); +} + +static int pcm1794a_remove(struct platform_device *pdev) +{ + snd_soc_unregister_codec(&pdev->dev); + return 0; +} + +static struct platform_driver pcm1794a_codec_driver = { + .probe = pcm1794a_probe, + .remove = pcm1794a_remove, + .driver = { + .name = "pcm1794a-codec", + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(pcm1794a_codec_driver); + +MODULE_DESCRIPTION("ASoC PCM1794A codec driver"); +MODULE_AUTHOR("Florian Meier "); +MODULE_LICENSE("GPL v2");