From 930c49de8674acda0f143f7bc182ed2fad8c4f9d Mon Sep 17 00:00:00 2001 From: IQaudIO Date: Mon, 13 May 2019 21:53:05 +0100 Subject: [PATCH] Added IQaudIO Pi-Codec board support (#2969) Add support for the IQaudIO Pi-Codec board. Signed-off-by: Gordon --- arch/arm/boot/dts/overlays/Makefile | 1 + arch/arm/boot/dts/overlays/README | 6 + .../dts/overlays/iqaudio-codec-overlay.dts | 42 +++ sound/soc/bcm/Kconfig | 7 + sound/soc/bcm/Makefile | 2 + sound/soc/bcm/iqaudio-codec.c | 250 ++++++++++++++++++ 9 files changed, 311 insertions(+) create mode 100644 arch/arm/boot/dts/overlays/iqaudio-codec-overlay.dts create mode 100644 sound/soc/bcm/iqaudio-codec.c --- a/arch/arm/boot/dts/overlays/Makefile +++ b/arch/arm/boot/dts/overlays/Makefile @@ -68,6 +68,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ i2c1-bcm2708.dtbo \ i2s-gpio28-31.dtbo \ ilitek251x.dtbo \ + iqaudio-codec.dtbo \ iqaudio-dac.dtbo \ iqaudio-dacplus.dtbo \ iqaudio-digi-wm8804-audio.dtbo \ --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -1160,6 +1160,12 @@ Params: interrupt GPIO use touchscreen (in pixels) +Name: iqaudio-codec +Info: Configures the IQaudio Codec audio card +Load: dtoverlay=iqaudio-codec +Params: + + Name: iqaudio-dac Info: Configures the IQaudio DAC audio card Load: dtoverlay=iqaudio-dac, --- /dev/null +++ b/arch/arm/boot/dts/overlays/iqaudio-codec-overlay.dts @@ -0,0 +1,42 @@ +// Definitions for IQaudIO CODEC +/dts-v1/; +/plugin/; + +/ { + compatible = "brcm,bcm2708"; + + fragment@0 { + target = <&i2s>; + __overlay__ { + status = "okay"; + }; + }; + + fragment@1 { + target = <&i2c1>; + __overlay__ { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + da2713@1a { + #sound-dai-cells = <0>; + compatible = "dlg,da7213"; + reg = <0x1a>; + status = "okay"; + }; + }; + }; + + fragment@2 { + target = <&sound>; + iqaudio_dac: __overlay__ { + compatible = "iqaudio,iqaudio-codec"; + i2s-controller = <&i2s>; + status = "okay"; + }; + }; + + __overrides__ { + }; +}; --- a/sound/soc/bcm/Kconfig +++ b/sound/soc/bcm/Kconfig @@ -108,6 +108,13 @@ config SND_BCM2708_SOC_JUSTBOOM_DIGI help Say Y or M if you want to add support for JustBoom Digi. +config SND_BCM2708_SOC_IQAUDIO_CODEC + tristate "Support for IQaudIO-CODEC" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S + select SND_SOC_DA7213 + help + Say Y or M if you want to add support for IQaudIO-CODEC. + config SND_BCM2708_SOC_IQAUDIO_DAC tristate "Support for IQaudIO-DAC" depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S --- a/sound/soc/bcm/Makefile +++ b/sound/soc/bcm/Makefile @@ -18,6 +18,7 @@ snd-soc-hifiberry-dacplusadc-objs := hif snd-soc-justboom-dac-objs := justboom-dac.o snd-soc-rpi-cirrus-objs := rpi-cirrus.o snd-soc-rpi-proto-objs := rpi-proto.o +snd-soc-iqaudio-codec-objs := iqaudio-codec.o snd-soc-iqaudio-dac-objs := iqaudio-dac.o snd-soc-i-sabre-q2m-objs := i-sabre-q2m.o snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o @@ -42,6 +43,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_D obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o +obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC) += snd-soc-iqaudio-codec.o obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o obj-$(CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M) += snd-soc-i-sabre-q2m.o obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o --- /dev/null +++ b/sound/soc/bcm/iqaudio-codec.c @@ -0,0 +1,250 @@ +/* + * ASoC Driver for IQaudIO Raspberry Pi Codec board + * + * Author: Gordon Garrity + * (C) Copyright IQaudio Limited, 2017-2019 + * + * 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 +#include + +#include +#include +#include "../codecs/da7213.h" + +static int pll_out = DA7213_PLL_FREQ_OUT_90316800; + +static int snd_rpi_iqaudio_pll_control(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + int ret = 0; + struct snd_soc_dapm_context *dapm = w->dapm; + struct snd_soc_card *card = dapm->card; + struct snd_soc_pcm_runtime *rtd = + snd_soc_get_pcm_runtime(card, card->dai_link[0].name); + struct snd_soc_dai *codec_dai = rtd->codec_dai; + + if (SND_SOC_DAPM_EVENT_OFF(event)) { + ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_MCLK, 0, + 0); + if (ret) + dev_err(card->dev, "Failed to bypass PLL: %d\n", ret); + } else if (SND_SOC_DAPM_EVENT_ON(event)) { + ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_PLL, 0, + pll_out); + if (ret) + dev_err(card->dev, "Failed to enable PLL: %d\n", ret); + } + + return ret; +} + +static int snd_rpi_iqaudio_post_dapm_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, + int event) +{ + switch (event) { + case SND_SOC_DAPM_POST_PMU: + /* Delay for mic bias ramp */ + msleep(1000); + break; + default: + break; + } + + return 0; +} + +static const struct snd_soc_dapm_widget dapm_widgets[] = { + SND_SOC_DAPM_HP("HP Jack", NULL), + SND_SOC_DAPM_MIC("MIC Jack", NULL), + SND_SOC_DAPM_MIC("Onboard MIC", NULL), + SND_SOC_DAPM_LINE("AUX Jack", NULL), + SND_SOC_DAPM_SUPPLY("PLL Control", SND_SOC_NOPM, 0, 0, + snd_rpi_iqaudio_pll_control, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_POST("Post Power Up Event", snd_rpi_iqaudio_post_dapm_event), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + {"HP Jack", NULL, "HPL"}, + {"HP Jack", NULL, "HPR"}, + {"HP Jack", NULL, "PLL Control"}, + + {"AUX Jack", NULL, "AUXR"}, + {"AUX Jack", NULL, "AUXL"}, + {"AUX Jack", NULL, "PLL Control"}, + + /* Assume Mic1 is linked to Headset and Mic2 to on-board mic */ + {"MIC Jack", NULL, "MIC1"}, + {"MIC Jack", NULL, "PLL Control"}, + {"Onboard MIC", NULL, "MIC2"}, + {"Onboard MIC", NULL, "PLL Control"}, +}; + +/* machine stream operations */ + +static int snd_rpi_iqaudio_codec_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + int ret; + + /* Set bclk ratio to align with codec's BCLK rate */ + ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64); + if (ret) { + dev_err(rtd->dev, "Failed to set CPU BLCK ratio\n"); + return ret; + } + + /* Set MCLK frequency to codec, onboard 11.2896MHz clock */ + return snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK, 11289600, + SND_SOC_CLOCK_OUT); +} + +static int snd_rpi_iqaudio_codec_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + unsigned int samplerate = params_rate(params); + + switch (samplerate) { + case 8000: + case 16000: + case 32000: + case 48000: + case 96000: + pll_out = DA7213_PLL_FREQ_OUT_98304000; + return 0; + case 44100: + case 88200: + pll_out = DA7213_PLL_FREQ_OUT_90316800; + return 0; + default: + dev_err(rtd->dev,"Unsupported samplerate %d\n", samplerate); + return -EINVAL; + } +} + +static const struct snd_soc_ops snd_rpi_iqaudio_codec_ops = { + .hw_params = snd_rpi_iqaudio_codec_hw_params, +}; + + +static struct snd_soc_dai_link snd_rpi_iqaudio_codec_dai[] = { +{ + .cpu_dai_name = "bcm2708-i2s.0", + .codec_dai_name = "da7213-hifi", + .platform_name = "bmc2708-i2s.0", + .codec_name = "da7213.1-001a", + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBM_CFM, + .init = snd_rpi_iqaudio_codec_init, + .ops = &snd_rpi_iqaudio_codec_ops, + .symmetric_rates = 1, + .symmetric_channels = 1, + .symmetric_samplebits = 1, +}, +}; + +/* audio machine driver */ +static struct snd_soc_card snd_rpi_iqaudio_codec = { + .owner = THIS_MODULE, + .dai_link = snd_rpi_iqaudio_codec_dai, + .num_links = ARRAY_SIZE(snd_rpi_iqaudio_codec_dai), + .dapm_widgets = dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(dapm_widgets), + .dapm_routes = audio_map, + .num_dapm_routes = ARRAY_SIZE(audio_map), +}; + +static int snd_rpi_iqaudio_codec_probe(struct platform_device *pdev) +{ + int ret = 0; + + snd_rpi_iqaudio_codec.dev = &pdev->dev; + + if (pdev->dev.of_node) { + struct device_node *i2s_node; + struct snd_soc_card *card = &snd_rpi_iqaudio_codec; + struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_codec_dai[0]; + + i2s_node = of_parse_phandle(pdev->dev.of_node, + "i2s-controller", 0); + if (i2s_node) { + dai->cpu_dai_name = NULL; + dai->cpu_of_node = i2s_node; + dai->platform_name = NULL; + dai->platform_of_node = i2s_node; + } + + if (of_property_read_string(pdev->dev.of_node, "card_name", + &card->name)) + card->name = "IQaudIOCODEC"; + + if (of_property_read_string(pdev->dev.of_node, "dai_name", + &dai->name)) + dai->name = "IQaudIO CODEC"; + + if (of_property_read_string(pdev->dev.of_node, + "dai_stream_name", &dai->stream_name)) + dai->stream_name = "IQaudIO CODEC HiFi v1.1"; + + } + + ret = snd_soc_register_card(&snd_rpi_iqaudio_codec); + if (ret) { + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "snd_soc_register_card() failed: %d\n", ret); + return ret; + } + + return 0; +} + +static int snd_rpi_iqaudio_codec_remove(struct platform_device *pdev) +{ + return snd_soc_unregister_card(&snd_rpi_iqaudio_codec); +} + +static const struct of_device_id iqaudio_of_match[] = { + { .compatible = "iqaudio,iqaudio-codec", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, iqaudio_of_match); + +static struct platform_driver snd_rpi_iqaudio_codec_driver = { + .driver = { + .name = "snd-rpi-iqaudio-codec", + .owner = THIS_MODULE, + .of_match_table = iqaudio_of_match, + }, + .probe = snd_rpi_iqaudio_codec_probe, + .remove = snd_rpi_iqaudio_codec_remove, +}; + + + +module_platform_driver(snd_rpi_iqaudio_codec_driver); + +MODULE_AUTHOR("Gordon Garrity "); +MODULE_DESCRIPTION("ASoC Driver for IQaudIO CODEC"); +MODULE_LICENSE("GPL v2");