mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
3fc661a98c
As usual these patches were extracted from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Also alphabetically order sound-soc kernel packages. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
166 lines
5.1 KiB
Diff
166 lines
5.1 KiB
Diff
From 2ea95927e8dc5c1ee099f999a24c5bfa028f18bf Mon Sep 17 00:00:00 2001
|
|
From: Florian Meier <florian.meier@koalo.de>
|
|
Date: Fri, 22 Nov 2013 19:19:08 +0100
|
|
Subject: [PATCH 063/381] ASoC: Add support for HifiBerry DAC
|
|
|
|
This adds a machine driver for the HifiBerry DAC.
|
|
It is a sound card that can
|
|
be stacked onto the Raspberry Pi.
|
|
|
|
Signed-off-by: Florian Meier <florian.meier@koalo.de>
|
|
---
|
|
sound/soc/bcm/Kconfig | 7 +++
|
|
sound/soc/bcm/Makefile | 4 ++
|
|
sound/soc/bcm/hifiberry_dac.c | 122 ++++++++++++++++++++++++++++++++++++++++++
|
|
3 files changed, 133 insertions(+)
|
|
create mode 100644 sound/soc/bcm/hifiberry_dac.c
|
|
|
|
--- a/sound/soc/bcm/Kconfig
|
|
+++ b/sound/soc/bcm/Kconfig
|
|
@@ -7,3 +7,10 @@ config SND_BCM2835_SOC_I2S
|
|
Say Y or M if you want to add support for codecs attached to
|
|
the BCM2835 I2S interface. You will also need
|
|
to select the audio interfaces to support below.
|
|
+
|
|
+config SND_BCM2708_SOC_HIFIBERRY_DAC
|
|
+ tristate "Support for HifiBerry DAC"
|
|
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
|
|
+ select SND_SOC_PCM5102A
|
|
+ help
|
|
+ Say Y or M if you want to add support for HifiBerry DAC.
|
|
--- a/sound/soc/bcm/Makefile
|
|
+++ b/sound/soc/bcm/Makefile
|
|
@@ -3,3 +3,7 @@ snd-soc-bcm2835-i2s-objs := bcm2835-i2s.
|
|
|
|
obj-$(CONFIG_SND_BCM2835_SOC_I2S) += snd-soc-bcm2835-i2s.o
|
|
|
|
+# BCM2708 Machine Support
|
|
+snd-soc-hifiberry-dac-objs := hifiberry_dac.o
|
|
+
|
|
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
|
|
--- /dev/null
|
|
+++ b/sound/soc/bcm/hifiberry_dac.c
|
|
@@ -0,0 +1,122 @@
|
|
+/*
|
|
+ * ASoC Driver for HifiBerry DAC
|
|
+ *
|
|
+ * Author: Florian Meier <florian.meier@koalo.de>
|
|
+ * Copyright 2013
|
|
+ *
|
|
+ * 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>
|
|
+
|
|
+static int snd_rpi_hifiberry_dac_init(struct snd_soc_pcm_runtime *rtd)
|
|
+{
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int snd_rpi_hifiberry_dac_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);
|
|
+}
|
|
+
|
|
+/* machine stream operations */
|
|
+static struct snd_soc_ops snd_rpi_hifiberry_dac_ops = {
|
|
+ .hw_params = snd_rpi_hifiberry_dac_hw_params,
|
|
+};
|
|
+
|
|
+static struct snd_soc_dai_link snd_rpi_hifiberry_dac_dai[] = {
|
|
+{
|
|
+ .name = "HifiBerry DAC",
|
|
+ .stream_name = "HifiBerry DAC HiFi",
|
|
+ .cpu_dai_name = "bcm2708-i2s.0",
|
|
+ .codec_dai_name = "pcm5102a-hifi",
|
|
+ .platform_name = "bcm2708-i2s.0",
|
|
+ .codec_name = "pcm5102a-codec",
|
|
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
|
|
+ SND_SOC_DAIFMT_CBS_CFS,
|
|
+ .ops = &snd_rpi_hifiberry_dac_ops,
|
|
+ .init = snd_rpi_hifiberry_dac_init,
|
|
+},
|
|
+};
|
|
+
|
|
+/* audio machine driver */
|
|
+static struct snd_soc_card snd_rpi_hifiberry_dac = {
|
|
+ .name = "snd_rpi_hifiberry_dac",
|
|
+ .dai_link = snd_rpi_hifiberry_dac_dai,
|
|
+ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_dac_dai),
|
|
+};
|
|
+
|
|
+static int snd_rpi_hifiberry_dac_probe(struct platform_device *pdev)
|
|
+{
|
|
+ int ret = 0;
|
|
+
|
|
+ snd_rpi_hifiberry_dac.dev = &pdev->dev;
|
|
+
|
|
+ if (pdev->dev.of_node) {
|
|
+ struct device_node *i2s_node;
|
|
+ struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_dac_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_hifiberry_dac);
|
|
+ if (ret)
|
|
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static int snd_rpi_hifiberry_dac_remove(struct platform_device *pdev)
|
|
+{
|
|
+ return snd_soc_unregister_card(&snd_rpi_hifiberry_dac);
|
|
+}
|
|
+
|
|
+static const struct of_device_id snd_rpi_hifiberry_dac_of_match[] = {
|
|
+ { .compatible = "hifiberry,hifiberry-dac", },
|
|
+ {},
|
|
+};
|
|
+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dac_of_match);
|
|
+
|
|
+static struct platform_driver snd_rpi_hifiberry_dac_driver = {
|
|
+ .driver = {
|
|
+ .name = "snd-hifiberry-dac",
|
|
+ .owner = THIS_MODULE,
|
|
+ .of_match_table = snd_rpi_hifiberry_dac_of_match,
|
|
+ },
|
|
+ .probe = snd_rpi_hifiberry_dac_probe,
|
|
+ .remove = snd_rpi_hifiberry_dac_remove,
|
|
+};
|
|
+
|
|
+module_platform_driver(snd_rpi_hifiberry_dac_driver);
|
|
+
|
|
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
|
|
+MODULE_DESCRIPTION("ASoC Driver for HifiBerry DAC");
|
|
+MODULE_LICENSE("GPL v2");
|