Add the audio card for sun8i SoC. This card links the codec driver (digital part) with the DAI driver. The analog codec driver is added as an aux_device.
Signed-off-by: Mylène Josserand mylene.josserand@free-electrons.com --- sound/soc/sunxi/Kconfig | 14 +++++++ sound/soc/sunxi/Makefile | 1 + sound/soc/sunxi/sun8i.c | 101 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 116 insertions(+) create mode 100644 sound/soc/sunxi/sun8i.c
diff --git a/sound/soc/sunxi/Kconfig b/sound/soc/sunxi/Kconfig index 9e287b0..7b97395 100644 --- a/sound/soc/sunxi/Kconfig +++ b/sound/soc/sunxi/Kconfig @@ -27,6 +27,20 @@ config SND_SUN4I_SPDIF Say Y or M to add support for the S/PDIF audio block in the Allwinner A10 and affiliated SoCs.
+config SND_SUN8I + tristate "Allwinner SUN6I/SUN8I audio card support" + select SND_SUN8I_CODEC + select SND_SUN4I_I2S + select SND_SUN8I_CODEC_ANALOG + select REGMAP_MMIO + help + This option enables the audio card for Allwinner A33 (sun8i) SoC. + It enables the DAI driver (SND_SUN4I_I2S), the digital audio + codec driver (SND_SUN8I_CODEC) and the analog codec driver + (SND_SUN8I_CODEC_ANALOG). + + Say Y or M if you want to add sun8i/6i card support + config SND_SUN8I_CODEC tristate "Allwinner SUN8I audio codec" select REGMAP_MMIO diff --git a/sound/soc/sunxi/Makefile b/sound/soc/sunxi/Makefile index 1da63d3..7f1bab9 100644 --- a/sound/soc/sunxi/Makefile +++ b/sound/soc/sunxi/Makefile @@ -1,5 +1,6 @@ obj-$(CONFIG_SND_SUN4I_CODEC) += sun4i-codec.o obj-$(CONFIG_SND_SUN4I_I2S) += sun4i-i2s.o obj-$(CONFIG_SND_SUN4I_SPDIF) += sun4i-spdif.o +obj-$(CONFIG_SND_SUN8I) += sun8i.o obj-$(CONFIG_SND_SUN8I_CODEC) += sun8i-codec.o obj-$(CONFIG_SND_SUN8I_CODEC_ANALOG) += sun8i-codec-analog.o diff --git a/sound/soc/sunxi/sun8i.c b/sound/soc/sunxi/sun8i.c new file mode 100644 index 0000000..565cd88 --- /dev/null +++ b/sound/soc/sunxi/sun8i.c @@ -0,0 +1,101 @@ +/* + * ALSA SoC driver for Allwinner sun8i SoC + * + * Copyright (C) 2016 Mylène Josserand mylene.josserand@free-electrons.com + * + * 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/firmware.h> +#include <linux/module.h> + +#include <sound/soc.h> + +static struct snd_soc_aux_dev sun8i_audio_prcm_aux_devs[] = { + { + .name = "sun8i-codec-analog", + .codec_name = "sun8i-codec-analog.0", + }, +}; + +static struct snd_soc_dai_link sun8i_dai_link = { + .name = "sun4i-i2s", + .stream_name = "Playback", + .codec_dai_name = "sun8i", + .dai_fmt = SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_CBM_CFM, +}; + +static struct snd_soc_card sun8i_card = { + .name = "sun8i-card", + .owner = THIS_MODULE, + .dai_link = &sun8i_dai_link, + .num_links = 1, + .aux_dev = sun8i_audio_prcm_aux_devs, + .num_aux_devs = ARRAY_SIZE(sun8i_audio_prcm_aux_devs), +}; + +static int sun8i_probe(struct platform_device *pdev) +{ + struct snd_soc_dai_link *link = &sun8i_dai_link; + struct device_node *np = pdev->dev.of_node; + int ret; + + /* register the soc card */ + sun8i_card.dev = &pdev->dev; + + /* Retrieve the audio-codec from DT */ + link->codec_of_node = of_parse_phandle(np, "allwinner,audio-codec", 0); + if (!link->codec_of_node) { + dev_err(&pdev->dev, "Missing audio codec\n"); + return -EINVAL; + } + + /* Retrieve DAI from DT */ + link->cpu_of_node = of_parse_phandle(np, "allwinner,i2s-controller", 0); + if (!link->cpu_of_node) { + dev_err(&pdev->dev, "Missing I2S controller\n"); + return -EINVAL; + } + + link->platform_of_node = link->cpu_of_node; + + /* Register the sound card */ + ret = devm_snd_soc_register_card(&pdev->dev, &sun8i_card); + if (ret) { + dev_err(&pdev->dev, + "Soc register card failed %d\n", ret); + return ret; + } + + return ret; +} + +static const struct of_device_id sun8i_of_match[] = { + { .compatible = "allwinner,sun8i-audio", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, sun8i_of_match); + +static struct platform_driver sun8i_card_driver = { + .probe = sun8i_probe, + .driver = { + .name = "sun8i-audio", + .of_match_table = sun8i_of_match, + }, +}; + +module_platform_driver(sun8i_card_driver); + +MODULE_AUTHOR("Mylène Josserand mylene.josserand@free-electrons.com"); +MODULE_DESCRIPTION("Allwinner sun8i machine ASoC driver"); +MODULE_LICENSE("GPL v2");