+++ /dev/null
-From 754ad5a8702de8e194d1fb185b451b1e39285dea Mon Sep 17 00:00:00 2001
-From: Daniel Matuschek <info@crazy-audio.com>
-Date: Mon, 4 Aug 2014 10:06:56 +0200
-Subject: [PATCH] Added support for HiFiBerry DAC+
-
-The driver is based on the HiFiBerry DAC driver. However HiFiBerry DAC+ uses
-a different codec chip (PCM5122), therefore a new driver is necessary.
----
- sound/soc/bcm/Kconfig | 7 ++
- sound/soc/bcm/Makefile | 2 +
- sound/soc/bcm/hifiberry_dacplus.c | 141 ++++++++++++++++++++++++++++++++++++++
- 3 files changed, 150 insertions(+)
- create mode 100644 sound/soc/bcm/hifiberry_dacplus.c
-
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -15,6 +15,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
- help
- Say Y or M if you want to add support for HifiBerry DAC.
-
-+config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
-+ tristate "Support for HifiBerry DAC+"
-+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-+ select SND_SOC_PCM512x
-+ help
-+ Say Y or M if you want to add support for HifiBerry DAC+.
-+
- config SND_BCM2708_SOC_HIFIBERRY_DIGI
- tristate "Support for HifiBerry Digi"
- depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
---- a/sound/soc/bcm/Makefile
-+++ b/sound/soc/bcm/Makefile
-@@ -5,11 +5,13 @@ obj-$(CONFIG_SND_BCM2835_SOC_I2S) += snd
-
- # BCM2708 Machine Support
- snd-soc-hifiberry-dac-objs := hifiberry_dac.o
-+snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
- snd-soc-hifiberry-digi-objs := hifiberry_digi.o
- snd-soc-rpi-dac-objs := rpi-dac.o
- snd-soc-iqaudio-dac-objs := iqaudio-dac.o
-
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
-+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
- obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
- obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
---- /dev/null
-+++ b/sound/soc/bcm/hifiberry_dacplus.c
-@@ -0,0 +1,141 @@
-+/*
-+ * ASoC Driver for HiFiBerry DAC+
-+ *
-+ * Author: Daniel Matuschek
-+ * Copyright 2014
-+ * 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 "../codecs/pcm512x.h"
-+
-+static int snd_rpi_hifiberry_dacplus_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+ 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, 0x08,0x08);
-+ return 0;
-+}
-+
-+static int snd_rpi_hifiberry_dacplus_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;
-+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
-+}
-+
-+static int snd_rpi_hifiberry_dacplus_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);
-+ return 0;
-+}
-+
-+static void snd_rpi_hifiberry_dacplus_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);
-+}
-+
-+/* machine stream operations */
-+static struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
-+ .hw_params = snd_rpi_hifiberry_dacplus_hw_params,
-+ .startup = snd_rpi_hifiberry_dacplus_startup,
-+ .shutdown = snd_rpi_hifiberry_dacplus_shutdown,
-+};
-+
-+static struct snd_soc_dai_link snd_rpi_hifiberry_dacplus_dai[] = {
-+{
-+ .name = "HiFiBerry DAC+",
-+ .stream_name = "HiFiBerry DAC+ HiFi",
-+ .cpu_dai_name = "bcm2708-i2s.0",
-+ .codec_dai_name = "pcm512x-hifi",
-+ .platform_name = "bcm2708-i2s.0",
-+ .codec_name = "pcm512x.1-004d",
-+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-+ SND_SOC_DAIFMT_CBS_CFS,
-+ .ops = &snd_rpi_hifiberry_dacplus_ops,
-+ .init = snd_rpi_hifiberry_dacplus_init,
-+},
-+};
-+
-+/* audio machine driver */
-+static struct snd_soc_card snd_rpi_hifiberry_dacplus = {
-+ .name = "snd_rpi_hifiberry_dacplus",
-+ .dai_link = snd_rpi_hifiberry_dacplus_dai,
-+ .num_links = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_dai),
-+};
-+
-+static int snd_rpi_hifiberry_dacplus_probe(struct platform_device *pdev)
-+{
-+ int ret = 0;
-+
-+ snd_rpi_hifiberry_dacplus.dev = &pdev->dev;
-+
-+ if (pdev->dev.of_node) {
-+ struct device_node *i2s_node;
-+ struct snd_soc_dai_link *dai = &snd_rpi_hifiberry_dacplus_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_dacplus);
-+ if (ret)
-+ dev_err(&pdev->dev,
-+ "snd_soc_register_card() failed: %d\n", ret);
-+
-+ return ret;
-+}
-+
-+static int snd_rpi_hifiberry_dacplus_remove(struct platform_device *pdev)
-+{
-+ return snd_soc_unregister_card(&snd_rpi_hifiberry_dacplus);
-+}
-+
-+static const struct of_device_id snd_rpi_hifiberry_dacplus_of_match[] = {
-+ { .compatible = "hifiberry,hifiberry-dacplus", },
-+ {},
-+};
-+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplus_of_match);
-+
-+static struct platform_driver snd_rpi_hifiberry_dacplus_driver = {
-+ .driver = {
-+ .name = "snd-rpi-hifiberry-dacplus",
-+ .owner = THIS_MODULE,
-+ .of_match_table = snd_rpi_hifiberry_dacplus_of_match,
-+ },
-+ .probe = snd_rpi_hifiberry_dacplus_probe,
-+ .remove = snd_rpi_hifiberry_dacplus_remove,
-+};
-+
-+module_platform_driver(snd_rpi_hifiberry_dacplus_driver);
-+
-+MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
-+MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+");
-+MODULE_LICENSE("GPL v2");
projects / openwrt / staging / yousong.git / blobdiff