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Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0322-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0322-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch285
1 files changed, 285 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0322-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch b/target/linux/brcm2708/patches-4.4/0322-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch
new file mode 100644
index 0000000000..e6ba86610d
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0322-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch
@@ -0,0 +1,285 @@
+From e6728a3fb4b185e632a63b7d0d61838d8d690548 Mon Sep 17 00:00:00 2001
+From: Andrey Grodzovsky <andrey2805@gmail.com>
+Date: Tue, 3 May 2016 22:10:59 -0400
+Subject: [PATCH] ARM: adau1977-adc: Add basic machine driver for adau1977
+ codec driver.
+
+This commit adds basic support for the codec usage including: Device tree overlay,
+binding I2S bus and setting I2S mode, clock source and frequency setting according
+to spec.
+
+Signed-off-by: Andrey Grodzovsky <andrey2805@gmail.com>
+---
+ arch/arm/boot/dts/overlays/Makefile | 1 +
+ arch/arm/boot/dts/overlays/README | 7 ++
+ .../arm/boot/dts/overlays/adau1977-adc-overlay.dts | 53 +++++++++
+ arch/arm/configs/bcm2709_defconfig | 1 +
+ arch/arm/configs/bcmrpi_defconfig | 1 +
+ sound/soc/bcm/Kconfig | 7 ++
+ sound/soc/bcm/Makefile | 2 +
+ sound/soc/bcm/adau1977-adc.c | 125 +++++++++++++++++++++
+ 8 files changed, 197 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/adau1977-adc-overlay.dts
+ create mode 100644 sound/soc/bcm/adau1977-adc.c
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -12,6 +12,7 @@ ifeq ($(CONFIG_ARCH_BCM2835),y)
+ RPI_DT_OVERLAYS=y
+ endif
+
++dtbo-$(RPI_DT_OVERLAYS) += adau1977-adc.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += ads7846.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += akkordion-iqdacplus.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += at86rf233.dtbo
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -161,6 +161,13 @@ Params:
+ and the other i2c baudrate parameters.
+
+
++Name: adau1977-adc
++Info: Overlay for activation of ADAU1977 ADC codec over I2C for control
++ and I2S for data.
++Load: dtoverlay=adau1977-adc
++Params: <None>
++
++
+ Name: ads7846
+ Info: ADS7846 Touch controller
+ Load: dtoverlay=ads7846,<param>=<val>
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/adau1977-adc-overlay.dts
+@@ -0,0 +1,53 @@
++// Definitions for ADAU1977 ADC
++/dts-v1/;
++/plugin/;
++
++/ {
++ compatible = "brcm,bcm2708";
++
++ fragment@0 {
++ target = <&soc>;
++
++ __overlay__ {
++ codec_supply: fixedregulator@0 {
++ compatible = "regulator-fixed";
++ regulator-name = "AVDD";
++ regulator-min-microvolt = <3300000>;
++ regulator-max-microvolt = <3300000>;
++ };
++ };
++ };
++
++ fragment@1 {
++ target = <&i2c>;
++
++ __overlay__ {
++ #address-cells = <1>;
++ #size-cells = <0>;
++ status = "okay";
++
++ adau1977: codec@11 {
++ compatible = "adi,adau1977";
++ reg = <0x11>;
++ reset-gpios = <&gpio 5 0>;
++ AVDD-supply = <&codec_supply>;
++ };
++ };
++ };
++
++ fragment@2 {
++ target = <&i2s>;
++ __overlay__ {
++ status = "okay";
++ };
++ };
++
++ fragment@3 {
++ target = <&sound>;
++ __overlay__ {
++ compatible = "adi,adau1977-adc";
++ i2s-controller = <&i2s>;
++ status = "okay";
++ };
++ };
++};
+--- a/arch/arm/configs/bcm2709_defconfig
++++ b/arch/arm/configs/bcm2709_defconfig
+@@ -861,6 +861,7 @@ CONFIG_SND_BCM2708_SOC_BOOMBERRY_DAC=m
+ CONFIG_SND_BCM2708_SOC_BOOMBERRY_DIGI=m
+ CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
+ CONFIG_SND_BCM2708_SOC_RASPIDAC3=m
++CONFIG_SND_BCM2708_SOC_ADAU1977_ADC=m
+ CONFIG_SND_SOC_ADAU1701=m
+ CONFIG_SND_SOC_WM8804_I2C=m
+ CONFIG_SND_SIMPLE_CARD=m
+--- a/arch/arm/configs/bcmrpi_defconfig
++++ b/arch/arm/configs/bcmrpi_defconfig
+@@ -853,6 +853,7 @@ CONFIG_SND_BCM2708_SOC_BOOMBERRY_DAC=m
+ CONFIG_SND_BCM2708_SOC_BOOMBERRY_DIGI=m
+ CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
+ CONFIG_SND_BCM2708_SOC_RASPIDAC3=m
++CONFIG_SND_BCM2708_SOC_ADAU1977_ADC=m
+ CONFIG_SND_SOC_ADAU1701=m
+ CONFIG_SND_SOC_WM8804_I2C=m
+ CONFIG_SND_SIMPLE_CARD=m
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -78,3 +78,10 @@ config SND_BCM2708_SOC_RASPIDAC3
+ select SND_SOC_TPA6130A2
+ help
+ Say Y or M if you want to add support for RaspiDAC Rev.3x.
++
++config SND_BCM2708_SOC_ADAU1977_ADC
++ tristate "Support for ADAU1977 ADC"
++ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++ select SND_SOC_ADAU1977_I2C
++ help
++ Say Y or M if you want to add support for ADAU1977 ADC.
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -4,6 +4,7 @@ snd-soc-bcm2835-i2s-objs := bcm2835-i2s.
+ obj-$(CONFIG_SND_BCM2835_SOC_I2S) += snd-soc-bcm2835-i2s.o
+
+ # BCM2708 Machine Support
++snd-soc-adau1977-adc-objs := adau1977-adc.o
+ snd-soc-hifiberry-dac-objs := hifiberry_dac.o
+ snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
+ snd-soc-hifiberry-digi-objs := hifiberry_digi.o
+@@ -15,6 +16,7 @@ snd-soc-rpi-proto-objs := rpi-proto.o
+ snd-soc-iqaudio-dac-objs := iqaudio-dac.o
+ snd-soc-raspidac3-objs := raspidac3.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
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
+--- /dev/null
++++ b/sound/soc/bcm/adau1977-adc.c
+@@ -0,0 +1,125 @@
++/*
++ * ASoC Driver for ADAU1977 ADC
++ *
++ * Author: Andrey Grodzovsky <andrey2805@gmail.com>
++ * Copyright 2016
++ *
++ * This file is based on hifibery_dac driver 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 <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++enum adau1977_clk_id {
++ ADAU1977_SYSCLK,
++};
++
++enum adau1977_sysclk_src {
++ ADAU1977_SYSCLK_SRC_MCLK,
++ ADAU1977_SYSCLK_SRC_LRCLK,
++};
++
++static int eval_adau1977_init(struct snd_soc_pcm_runtime *rtd)
++{
++ int ret;
++ struct snd_soc_dai *codec_dai = rtd->codec_dai;
++
++ ret = snd_soc_dai_set_tdm_slot(codec_dai, 0, 0, 0, 0);
++ if (ret < 0)
++ return ret;
++
++ return snd_soc_codec_set_sysclk(rtd->codec, ADAU1977_SYSCLK,
++ ADAU1977_SYSCLK_SRC_MCLK, 11289600, SND_SOC_CLOCK_IN);
++}
++
++static struct snd_soc_dai_link snd_rpi_adau1977_dai[] = {
++ {
++ .name = "adau1977",
++ .stream_name = "ADAU1977",
++ .cpu_dai_name = "bcm2708-i2s.0",
++ .codec_dai_name = "adau1977-hifi",
++ .platform_name = "bcm2708-i2s.0",
++ .codec_name = "adau1977.1-0011",
++ .init = eval_adau1977_init,
++ .dai_fmt = SND_SOC_DAIFMT_I2S |
++ SND_SOC_DAIFMT_NB_NF |
++ SND_SOC_DAIFMT_CBM_CFM,
++ },
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_adau1977_adc = {
++ .name = "snd_rpi_adau1977_adc",
++ .owner = THIS_MODULE,
++ .dai_link = snd_rpi_adau1977_dai,
++ .num_links = ARRAY_SIZE(snd_rpi_adau1977_dai),
++};
++
++static int snd_adau1977_adc_probe(struct platform_device *pdev)
++{
++ int ret = 0;
++
++ snd_adau1977_adc.dev = &pdev->dev;
++ if (pdev->dev.of_node) {
++ struct device_node *i2s_node;
++ struct snd_soc_dai_link *dai = &snd_rpi_adau1977_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;
++ }
++ }
++
++ ret = snd_soc_register_card(&snd_adau1977_adc);
++ if (ret)
++ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
++
++ return ret;
++}
++
++static int snd_adau1977_adc_remove(struct platform_device *pdev)
++{
++ return snd_soc_unregister_card(&snd_adau1977_adc);
++}
++
++static const struct of_device_id snd_adau1977_adc_of_match[] = {
++ { .compatible = "adi,adau1977-adc", },
++ {},
++};
++
++MODULE_DEVICE_TABLE(of, snd_adau1977_adc_of_match);
++
++static struct platform_driver snd_adau1977_adc_driver = {
++ .driver = {
++ .name = "snd-adau1977-adc",
++ .owner = THIS_MODULE,
++ .of_match_table = snd_adau1977_adc_of_match,
++ },
++ .probe = snd_adau1977_adc_probe,
++ .remove = snd_adau1977_adc_remove,
++};
++
++module_platform_driver(snd_adau1977_adc_driver);
++
++MODULE_AUTHOR("Andrey Grodzovsky <andrey2805@gmail.com>");
++MODULE_DESCRIPTION("ASoC Driver for ADAU1977 ADC");
++MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-28 19:04:54 +0000