diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0074-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0074-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0074-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch b/target/linux/brcm2708/patches-4.14/950-0074-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch new file mode 100644 index 0000000000..00163cbcbd --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0074-ARM-adau1977-adc-Add-basic-machine-driver-for-adau19.patch @@ -0,0 +1,177 @@ +From d40ccbe0dbe26b7468ea1383e41d43179ff7c366 Mon Sep 17 00:00:00 2001 +From: Andrey Grodzovsky <andrey2805@gmail.com> +Date: Tue, 3 May 2016 22:10:59 -0400 +Subject: [PATCH 074/454] 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> +--- + sound/soc/bcm/Kconfig | 7 ++ + sound/soc/bcm/Makefile | 2 + + sound/soc/bcm/adau1977-adc.c | 125 +++++++++++++++++++++++++++++++++++ + 3 files changed, 134 insertions(+) + create mode 100644 sound/soc/bcm/adau1977-adc.c + +--- a/sound/soc/bcm/Kconfig ++++ b/sound/soc/bcm/Kconfig +@@ -88,3 +88,10 @@ 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 +@@ -9,6 +9,7 @@ snd-soc-cygnus-objs := cygnus-pcm.o cygn + obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-cygnus.o + + # BCM2708 Machine Support ++snd-soc-adau1977-adc-objs := adau1977-adc.o + snd-soc-hifiberry-amp-objs := hifiberry_amp.o + snd-soc-hifiberry-dac-objs := hifiberry_dac.o + snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o +@@ -20,6 +21,7 @@ snd-soc-rpi-proto-objs := rpi-proto.o + snd-soc-iqaudio-dac-objs := iqaudio-dac.o + snd-soc-raspidac3-objs := raspidac3.o + ++obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o +--- /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 && ret != -EPROBE_DEFER) ++ 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"); |