--- /dev/null
+From a382428726be87f1d848772a4c1a619144a33c98 Mon Sep 17 00:00:00 2001
+From: Jan Grulich <jan@grulich.eu>
+Date: Mon, 24 Aug 2015 16:03:47 +0100
+Subject: [PATCH 168/203] RaspiDAC3 support
+
+Signed-off-by: Jan Grulich <jan@grulich.eu>
+---
+ arch/arm/boot/dts/overlays/Makefile | 1 +
+ arch/arm/boot/dts/overlays/README | 6 +
+ arch/arm/boot/dts/overlays/raspidac3-overlay.dts | 45 ++++++
+ arch/arm/configs/bcm2709_defconfig | 1 +
+ arch/arm/configs/bcmrpi_defconfig | 1 +
+ sound/soc/bcm/Kconfig | 8 +
+ sound/soc/bcm/Makefile | 2 +
+ sound/soc/bcm/raspidac3.c | 191 +++++++++++++++++++++++
+ 8 files changed, 255 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/raspidac3-overlay.dts
+ create mode 100644 sound/soc/bcm/raspidac3.c
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -37,6 +37,7 @@ dtb-$(RPI_DT_OVERLAYS) += pitft28-resist
+ dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb
+ dtb-$(RPI_DT_OVERLAYS) += pwm-overlay.dtb
+ dtb-$(RPI_DT_OVERLAYS) += pwm-2chan-overlay.dtb
++dtb-$(RPI_DT_OVERLAYS) += raspidac3-overlay.dtb
+ dtb-$(RPI_DT_OVERLAYS) += rpi-dac-overlay.dtb
+ dtb-$(RPI_DT_OVERLAYS) += rpi-display-overlay.dtb
+ dtb-$(RPI_DT_OVERLAYS) += rpi-ft5406-overlay.dtb
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -455,6 +455,12 @@ Params: pin Output
+ clock PWM clock frequency (informational)
+
+
++Name: raspidac3
++Info: Configures the RaspiDAV Rev.3x audio card
++Load: dtoverlay=raspidac3
++Params: <None>
++
++
+ Name: rpi-dac
+ Info: Configures the RPi DAC audio card
+ Load: dtoverlay=rpi-dac
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/raspidac3-overlay.dts
+@@ -0,0 +1,45 @@
++// Definitions for RaspiDACv3
++/dts-v1/;
++/plugin/;
++
++/ {
++ compatible = "brcm,bcm2708";
++
++ fragment@0 {
++ target = <&sound>;
++ __overlay__ {
++ compatible = "jg,raspidacv3";
++ i2s-controller = <&i2s>;
++ status = "okay";
++ };
++ };
++
++ fragment@1 {
++ target = <&i2s>;
++ __overlay__ {
++ status = "okay";
++ };
++ };
++
++ fragment@2 {
++ target = <&i2c1>;
++ __overlay__ {
++ #address-cells = <1>;
++ #size-cells = <0>;
++ status = "okay";
++
++ pcm5122@4c {
++ #sound-dai-cells = <0>;
++ compatible = "ti,pcm5122";
++ reg = <0x4c>;
++ status = "okay";
++ };
++
++ tpa6130a2: tpa6130a2@60 {
++ compatible = "ti,tpa6130a2";
++ reg = <0x60>;
++ status = "okay";
++ };
++ };
++ };
++};
+--- a/arch/arm/configs/bcm2709_defconfig
++++ b/arch/arm/configs/bcm2709_defconfig
+@@ -830,6 +830,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
+ CONFIG_SND_BCM2708_SOC_RPI_DAC=m
+ CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+ CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
++CONFIG_SND_BCM2708_SOC_RASPIDAC3=m
+ CONFIG_SND_SOC_WM8804_I2C=m
+ CONFIG_SND_SIMPLE_CARD=m
+ CONFIG_SOUND_PRIME=m
+--- a/arch/arm/configs/bcmrpi_defconfig
++++ b/arch/arm/configs/bcmrpi_defconfig
+@@ -823,6 +823,7 @@ CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
+ CONFIG_SND_BCM2708_SOC_RPI_DAC=m
+ CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
+ CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
++CONFIG_SND_BCM2708_SOC_RASPIDAC3=m
+ CONFIG_SND_SOC_WM8804_I2C=m
+ CONFIG_SND_SIMPLE_CARD=m
+ CONFIG_SOUND_PRIME=m
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -67,3 +67,11 @@ config SND_BCM2708_SOC_IQAUDIO_DAC
+ select SND_SOC_PCM512x_I2C
+ help
+ Say Y or M if you want to add support for IQaudIO-DAC.
++
++config SND_BCM2708_SOC_RASPIDAC3
++ tristate "Support for RaspiDAC Rev.3x"
++ depends on SND_BCM2708_SOC_I2S
++ select SND_SOC_PCM512x_I2C
++ select SND_SOC_TPA6130A2
++ help
++ Say Y or M if you want to add support for RaspiDAC Rev.3x.
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -16,6 +16,7 @@ snd-soc-hifiberry-amp-objs := hifiberry_
+ snd-soc-rpi-dac-objs := rpi-dac.o
+ snd-soc-rpi-proto-objs := rpi-proto.o
+ snd-soc-iqaudio-dac-objs := iqaudio-dac.o
++snd-soc-raspidac3-objs := raspidac3.o
+
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
+@@ -24,3 +25,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_A
+ obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
+ obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
+ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
++obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
+--- /dev/null
++++ b/sound/soc/bcm/raspidac3.c
+@@ -0,0 +1,191 @@
++/*
++ * ASoC Driver for RaspiDAC v3
++ *
++ * Author: Jan Grulich <jan@grulich.eu>
++ * Copyright 2015
++ * based on code by Daniel Matuschek <daniel@hifiberry.com>
++ * based on code by Florian Meier <florian.meier@koalo.de>
++ *
++ * 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>
++#include <sound/soc-dapm.h>
++
++#include "../codecs/pcm512x.h"
++#include "../codecs/tpa6130a2.h"
++
++/* sound card init */
++static int snd_rpi_raspidac3_init(struct snd_soc_pcm_runtime *rtd)
++{
++ int ret;
++ struct snd_soc_card *card = rtd->card;
++ struct snd_soc_codec *codec = rtd->codec;
++ snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
++ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
++ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
++
++ ret = snd_soc_limit_volume(codec, "Digital Playback Volume", 207);
++ if (ret < 0)
++ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
++ else {
++ struct snd_kcontrol *kctl;
++
++ ret = tpa6130a2_add_controls(codec);
++ if (ret < 0)
++ dev_warn(card->dev, "Failed to add TPA6130A2 controls: %d\n",
++ ret);
++ ret = snd_soc_limit_volume(codec,
++ "TPA6130A2 Headphone Playback Volume",
++ 54);
++ if (ret < 0)
++ dev_warn(card->dev, "Failed to set TPA6130A2 volume limit: %d\n",
++ ret);
++ kctl = snd_soc_card_get_kcontrol(card,
++ "TPA6130A2 Headphone Playback Volume");
++ if (kctl) {
++ strcpy(kctl->id.name, "Headphones Playback Volume");
++ /* disable the volume dB scale so alsamixer works */
++ kctl->vd[0].access = SNDRV_CTL_ELEM_ACCESS_READWRITE;
++ }
++
++ kctl = snd_soc_card_get_kcontrol(card,
++ "TPA6130A2 Headphone Playback Switch");
++ if (kctl)
++ strcpy(kctl->id.name, "Headphones Playback Switch");
++ }
++
++ return 0;
++}
++
++/* set hw parameters */
++static int snd_rpi_raspidac3_hw_params(struct snd_pcm_substream *substream,
++ struct snd_pcm_hw_params *params)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
++
++ unsigned int sample_bits =
++ snd_pcm_format_physical_width(params_format(params));
++
++ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
++}
++
++/* startup */
++static int snd_rpi_raspidac3_startup(struct snd_pcm_substream *substream) {
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_codec *codec = rtd->codec;
++ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
++ tpa6130a2_stereo_enable(codec, 1);
++ return 0;
++}
++
++/* shutdown */
++static void snd_rpi_raspidac3_shutdown(struct snd_pcm_substream *substream) {
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_codec *codec = rtd->codec;
++ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
++ tpa6130a2_stereo_enable(codec, 0);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_raspidac3_ops = {
++ .hw_params = snd_rpi_raspidac3_hw_params,
++ .startup = snd_rpi_raspidac3_startup,
++ .shutdown = snd_rpi_raspidac3_shutdown,
++};
++
++/* interface setup */
++static struct snd_soc_dai_link snd_rpi_raspidac3_dai[] = {
++{
++ .name = "RaspiDAC Rev.3x",
++ .stream_name = "RaspiDAC HiFi",
++ .cpu_dai_name = "bcm2708-i2s.0",
++ .codec_dai_name = "pcm512x-hifi",
++ .platform_name = "bcm2708-i2s.0",
++ .codec_name = "pcm512x.1-004c",
++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++ SND_SOC_DAIFMT_CBS_CFS,
++ .ops = &snd_rpi_raspidac3_ops,
++ .init = snd_rpi_raspidac3_init,
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_raspidac3 = {
++ .name = "RaspiDAC Rev.3x HiFi Audio Card",
++ .dai_link = snd_rpi_raspidac3_dai,
++ .num_links = ARRAY_SIZE(snd_rpi_raspidac3_dai),
++};
++
++/* sound card test */
++static int snd_rpi_raspidac3_probe(struct platform_device *pdev)
++{
++ int ret = 0;
++
++ snd_rpi_raspidac3.dev = &pdev->dev;
++
++ if (pdev->dev.of_node) {
++ struct device_node *i2s_node;
++ struct snd_soc_dai_link *dai = &snd_rpi_raspidac3_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_rpi_raspidac3);
++ if (ret)
++ dev_err(&pdev->dev,
++ "snd_soc_register_card() failed: %d\n", ret);
++
++ return ret;
++}
++
++/* sound card disconnect */
++static int snd_rpi_raspidac3_remove(struct platform_device *pdev)
++{
++ return snd_soc_unregister_card(&snd_rpi_raspidac3);
++}
++
++static const struct of_device_id raspidac3_of_match[] = {
++ { .compatible = "jg,raspidacv3", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, raspidac3_of_match);
++
++/* sound card platform driver */
++static struct platform_driver snd_rpi_raspidac3_driver = {
++ .driver = {
++ .name = "snd-rpi-raspidac3",
++ .owner = THIS_MODULE,
++ .of_match_table = raspidac3_of_match,
++ },
++ .probe = snd_rpi_raspidac3_probe,
++ .remove = snd_rpi_raspidac3_remove,
++};
++
++module_platform_driver(snd_rpi_raspidac3_driver);
++
++MODULE_AUTHOR("Jan Grulich <jan@grulich.eu>");
++MODULE_DESCRIPTION("ASoC Driver for RaspiDAC Rev.3x");
++MODULE_LICENSE("GPL v2");
projects / openwrt.git / blobdiff