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011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
191 lines
6.4 KiB
Diff
191 lines
6.4 KiB
Diff
From f3a96a42af5565562adadb00524ad386038aafff Mon Sep 17 00:00:00 2001
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From: Daniel Matuschek <info@crazy-audio.com>
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Date: Mon, 4 Aug 2014 10:06:56 +0200
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Subject: [PATCH] Added support for HiFiBerry DAC+
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The driver is based on the HiFiBerry DAC driver. However HiFiBerry DAC+ uses
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a different codec chip (PCM5122), therefore a new driver is necessary.
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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/hifiberry_dacplus.c | 141 ++++++++++++++++++++++++++++++++++++++
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3 files changed, 150 insertions(+)
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create mode 100644 sound/soc/bcm/hifiberry_dacplus.c
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--- a/sound/soc/bcm/Kconfig
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+++ b/sound/soc/bcm/Kconfig
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@@ -15,6 +15,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
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help
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Say Y or M if you want to add support for HifiBerry DAC.
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+config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
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+ tristate "Support for HifiBerry DAC+"
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+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
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+ select SND_SOC_PCM512x
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+ help
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+ Say Y or M if you want to add support for HifiBerry DAC+.
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+
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config SND_BCM2708_SOC_HIFIBERRY_DIGI
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tristate "Support for HifiBerry Digi"
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depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
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--- a/sound/soc/bcm/Makefile
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+++ b/sound/soc/bcm/Makefile
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@@ -5,11 +5,13 @@ obj-$(CONFIG_SND_BCM2835_SOC_I2S) += snd
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# BCM2708 Machine Support
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snd-soc-hifiberry-dac-objs := hifiberry_dac.o
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+snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
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snd-soc-hifiberry-digi-objs := hifiberry_digi.o
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snd-soc-rpi-dac-objs := rpi-dac.o
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snd-soc-iqaudio-dac-objs := iqaudio-dac.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
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+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
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obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
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obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
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--- /dev/null
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+++ b/sound/soc/bcm/hifiberry_dacplus.c
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@@ -0,0 +1,141 @@
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+/*
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+ * ASoC Driver for HiFiBerry DAC+
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+ *
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+ * Author: Daniel Matuschek
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+ * Copyright 2014
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+ * based on code by Florian Meier <florian.meier@koalo.de>
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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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+#include "../codecs/pcm512x.h"
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+
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+static int snd_rpi_hifiberry_dacplus_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ struct snd_soc_codec *codec = rtd->codec;
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+ snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
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+ snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
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+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
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+ return 0;
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+}
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+
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+static int snd_rpi_hifiberry_dacplus_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
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+}
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+
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+static int snd_rpi_hifiberry_dacplus_startup(struct snd_pcm_substream *substream) {
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_codec *codec = rtd->codec;
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+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
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+ return 0;
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+}
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+
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+static void snd_rpi_hifiberry_dacplus_shutdown(struct snd_pcm_substream *substream) {
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_codec *codec = rtd->codec;
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+ snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
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+}
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+
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+/* machine stream operations */
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+static struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
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+ .hw_params = snd_rpi_hifiberry_dacplus_hw_params,
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+ .startup = snd_rpi_hifiberry_dacplus_startup,
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+ .shutdown = snd_rpi_hifiberry_dacplus_shutdown,
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+};
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+
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+static struct snd_soc_dai_link snd_rpi_hifiberry_dacplus_dai[] = {
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+{
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+ .name = "HiFiBerry DAC+",
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+ .stream_name = "HiFiBerry DAC+ HiFi",
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+ .cpu_dai_name = "bcm2708-i2s.0",
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+ .codec_dai_name = "pcm512x-hifi",
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+ .platform_name = "bcm2708-i2s.0",
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+ .codec_name = "pcm512x.1-004d",
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+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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+ SND_SOC_DAIFMT_CBS_CFS,
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+ .ops = &snd_rpi_hifiberry_dacplus_ops,
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+ .init = snd_rpi_hifiberry_dacplus_init,
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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_rpi_hifiberry_dacplus = {
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+ .name = "snd_rpi_hifiberry_dacplus",
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+ .dai_link = snd_rpi_hifiberry_dacplus_dai,
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+ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_dai),
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+};
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+
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+static int snd_rpi_hifiberry_dacplus_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_rpi_hifiberry_dacplus.dev = &pdev->dev;
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+
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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_hifiberry_dacplus_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_rpi_hifiberry_dacplus);
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+ if (ret)
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+ dev_err(&pdev->dev,
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+ "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_rpi_hifiberry_dacplus_remove(struct platform_device *pdev)
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+{
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+ return snd_soc_unregister_card(&snd_rpi_hifiberry_dacplus);
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+}
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+
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+static const struct of_device_id snd_rpi_hifiberry_dacplus_of_match[] = {
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+ { .compatible = "hifiberry,hifiberry-dacplus", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplus_of_match);
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+
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+static struct platform_driver snd_rpi_hifiberry_dacplus_driver = {
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+ .driver = {
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+ .name = "snd-rpi-hifiberry-dacplus",
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+ .owner = THIS_MODULE,
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+ .of_match_table = snd_rpi_hifiberry_dacplus_of_match,
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+ },
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+ .probe = snd_rpi_hifiberry_dacplus_probe,
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+ .remove = snd_rpi_hifiberry_dacplus_remove,
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+};
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+
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+module_platform_driver(snd_rpi_hifiberry_dacplus_driver);
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+
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+MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
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+MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+");
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+MODULE_LICENSE("GPL v2");
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