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fce21ae4cc
Right now all brcm2708 patches are extracted from the non-mainline raspberrypi/linux git tree. Many of them are hacks and/or are unneeded in LEDE. Raspberry Pi is getting better and better mainline support so it would be nice to finally start maintaining patches in a cleaner way: 1) Backport patches accepted in upstream tree 2) Start using upstream drivers 3) Pick only these patches that are needed for more complete support Handling above tasks requires grouping patches - ideally using the same prefixes as generic ones. It means we should rename existing patches to use some high prefix. This will allow e.g. use 0xx for backported code. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
178 lines
5.4 KiB
Diff
178 lines
5.4 KiB
Diff
From 9bbd8a3c8378eac9e605e0f37f4005583e122527 Mon Sep 17 00:00:00 2001
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From: Andrey Grodzovsky <andrey2805@gmail.com>
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Date: Tue, 3 May 2016 22:10:59 -0400
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Subject: [PATCH] ARM: adau1977-adc: Add basic machine driver for adau1977
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codec driver.
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This commit adds basic support for the codec usage including: Device tree overlay,
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binding I2S bus and setting I2S mode, clock source and frequency setting according
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to spec.
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Signed-off-by: Andrey Grodzovsky <andrey2805@gmail.com>
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---
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sound/soc/bcm/Kconfig | 7 +++
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sound/soc/bcm/Makefile | 2 +
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sound/soc/bcm/adau1977-adc.c | 125 +++++++++++++++++++++++++++++++++++++++++++
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3 files changed, 134 insertions(+)
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create mode 100644 sound/soc/bcm/adau1977-adc.c
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--- a/sound/soc/bcm/Kconfig
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+++ b/sound/soc/bcm/Kconfig
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@@ -87,3 +87,10 @@ config SND_BCM2708_SOC_RASPIDAC3
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select SND_SOC_TPA6130A2
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help
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Say Y or M if you want to add support for RaspiDAC Rev.3x.
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+
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+config SND_BCM2708_SOC_ADAU1977_ADC
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+ tristate "Support for ADAU1977 ADC"
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+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
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+ select SND_SOC_ADAU1977_I2C
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+ help
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+ Say Y or M if you want to add support for ADAU1977 ADC.
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--- a/sound/soc/bcm/Makefile
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+++ b/sound/soc/bcm/Makefile
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@@ -9,6 +9,7 @@ snd-soc-cygnus-objs := cygnus-pcm.o cygn
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obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-cygnus.o
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# BCM2708 Machine Support
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+snd-soc-adau1977-adc-objs := adau1977-adc.o
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snd-soc-hifiberry-amp-objs := hifiberry_amp.o
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snd-soc-hifiberry-dac-objs := hifiberry_dac.o
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snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
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@@ -20,6 +21,7 @@ snd-soc-rpi-proto-objs := rpi-proto.o
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snd-soc-iqaudio-dac-objs := iqaudio-dac.o
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snd-soc-raspidac3-objs := raspidac3.o
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+obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
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--- /dev/null
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+++ b/sound/soc/bcm/adau1977-adc.c
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@@ -0,0 +1,125 @@
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+/*
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+ * ASoC Driver for ADAU1977 ADC
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+ *
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+ * Author: Andrey Grodzovsky <andrey2805@gmail.com>
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+ * Copyright 2016
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+ *
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+ * This file is based on hifibery_dac driver by Florian Meier.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * version 2 as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+
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+#include <sound/core.h>
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+#include <sound/pcm.h>
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+#include <sound/pcm_params.h>
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+#include <sound/soc.h>
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+#include <sound/jack.h>
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+
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+enum adau1977_clk_id {
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+ ADAU1977_SYSCLK,
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+};
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+
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+enum adau1977_sysclk_src {
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+ ADAU1977_SYSCLK_SRC_MCLK,
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+ ADAU1977_SYSCLK_SRC_LRCLK,
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+};
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+
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+static int eval_adau1977_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ int ret;
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+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
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+
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+ ret = snd_soc_dai_set_tdm_slot(codec_dai, 0, 0, 0, 0);
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+ if (ret < 0)
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+ return ret;
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+
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+ return snd_soc_codec_set_sysclk(rtd->codec, ADAU1977_SYSCLK,
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+ ADAU1977_SYSCLK_SRC_MCLK, 11289600, SND_SOC_CLOCK_IN);
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+}
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+
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+static struct snd_soc_dai_link snd_rpi_adau1977_dai[] = {
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+ {
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+ .name = "adau1977",
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+ .stream_name = "ADAU1977",
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+ .cpu_dai_name = "bcm2708-i2s.0",
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+ .codec_dai_name = "adau1977-hifi",
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+ .platform_name = "bcm2708-i2s.0",
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+ .codec_name = "adau1977.1-0011",
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+ .init = eval_adau1977_init,
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+ .dai_fmt = SND_SOC_DAIFMT_I2S |
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+ SND_SOC_DAIFMT_NB_NF |
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+ SND_SOC_DAIFMT_CBM_CFM,
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+ },
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+};
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+
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+/* audio machine driver */
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+static struct snd_soc_card snd_adau1977_adc = {
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+ .name = "snd_rpi_adau1977_adc",
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+ .owner = THIS_MODULE,
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+ .dai_link = snd_rpi_adau1977_dai,
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+ .num_links = ARRAY_SIZE(snd_rpi_adau1977_dai),
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+};
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+
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+static int snd_adau1977_adc_probe(struct platform_device *pdev)
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+{
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+ int ret = 0;
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+
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+ snd_adau1977_adc.dev = &pdev->dev;
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+ if (pdev->dev.of_node) {
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+ struct device_node *i2s_node;
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+ struct snd_soc_dai_link *dai = &snd_rpi_adau1977_dai[0];
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+ i2s_node = of_parse_phandle(pdev->dev.of_node,
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+ "i2s-controller", 0);
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+
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+ if (i2s_node) {
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+ dai->cpu_dai_name = NULL;
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+ dai->cpu_of_node = i2s_node;
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+ dai->platform_name = NULL;
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+ dai->platform_of_node = i2s_node;
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+ }
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+ }
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+
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+ ret = snd_soc_register_card(&snd_adau1977_adc);
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+ if (ret)
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+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
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+
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+ return ret;
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+}
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+
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+static int snd_adau1977_adc_remove(struct platform_device *pdev)
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+{
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+ return snd_soc_unregister_card(&snd_adau1977_adc);
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+}
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+
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+static const struct of_device_id snd_adau1977_adc_of_match[] = {
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+ { .compatible = "adi,adau1977-adc", },
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+ {},
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+};
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+
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+MODULE_DEVICE_TABLE(of, snd_adau1977_adc_of_match);
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+
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+static struct platform_driver snd_adau1977_adc_driver = {
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+ .driver = {
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+ .name = "snd-adau1977-adc",
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+ .owner = THIS_MODULE,
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+ .of_match_table = snd_adau1977_adc_of_match,
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+ },
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+ .probe = snd_adau1977_adc_probe,
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+ .remove = snd_adau1977_adc_remove,
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+};
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+
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+module_platform_driver(snd_adau1977_adc_driver);
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+
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+MODULE_AUTHOR("Andrey Grodzovsky <andrey2805@gmail.com>");
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+MODULE_DESCRIPTION("ASoC Driver for ADAU1977 ADC");
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+MODULE_LICENSE("GPL v2");
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