215 lines
6.8 KiB
Diff
Executable file
215 lines
6.8 KiB
Diff
Executable file
From 19b5aa63015268ce3c736b720e1e7f8211f7cf98 Mon Sep 17 00:00:00 2001
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From: Gordon Garrity <gordon@iqaudio.com>
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Date: Sat, 8 Mar 2014 16:56:57 +0000
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Subject: [PATCH 042/114] Add IQaudIO Sound Card support for Raspberry Pi
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---
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arch/arm/configs/bcmrpi_defconfig | 1 +
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arch/arm/mach-bcm2708/bcm2708.c | 22 ++++++++
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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/iqaudio-dac.c | 111 ++++++++++++++++++++++++++++++++++++++
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5 files changed, 143 insertions(+)
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create mode 100644 sound/soc/bcm/iqaudio-dac.c
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diff --git a/arch/arm/configs/bcmrpi_defconfig b/arch/arm/configs/bcmrpi_defconfig
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index c9d3fac..f15a4b9 100644
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--- a/arch/arm/configs/bcmrpi_defconfig
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+++ b/arch/arm/configs/bcmrpi_defconfig
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@@ -758,6 +758,7 @@ CONFIG_SND_BCM2708_SOC_I2S=m
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CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
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CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
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CONFIG_SND_BCM2708_SOC_RPI_DAC=m
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+CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
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CONFIG_SND_SIMPLE_CARD=m
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CONFIG_SOUND_PRIME=m
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CONFIG_HIDRAW=y
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diff --git a/arch/arm/mach-bcm2708/bcm2708.c b/arch/arm/mach-bcm2708/bcm2708.c
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index a57cb85..633be19 100644
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--- a/arch/arm/mach-bcm2708/bcm2708.c
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+++ b/arch/arm/mach-bcm2708/bcm2708.c
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@@ -652,6 +652,22 @@ static struct platform_device snd_pcm1794a_codec_device = {
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};
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#endif
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+
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+#if defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) || defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC_MODULE)
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+static struct platform_device snd_rpi_iqaudio_dac_device = {
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+ .name = "snd-rpi-iqaudio-dac",
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+ .id = 0,
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+ .num_resources = 0,
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+};
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+
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+// Use the actual device name rather than generic driver name
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+static struct i2c_board_info __initdata snd_pcm512x_i2c_devices[] = {
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+ {
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+ I2C_BOARD_INFO("pcm5122", 0x4c)
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+ },
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+};
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+#endif
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+
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int __init bcm_register_device(struct platform_device *pdev)
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{
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int ret;
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@@ -791,6 +807,12 @@ void __init bcm2708_init(void)
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bcm_register_device(&snd_pcm1794a_codec_device);
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#endif
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+#if defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) || defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC_MODULE)
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+ bcm_register_device(&snd_rpi_iqaudio_dac_device);
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+ i2c_register_board_info(1, snd_pcm512x_i2c_devices, ARRAY_SIZE(snd_pcm512x_i2c_devices));
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+#endif
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+
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+
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for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
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struct amba_device *d = amba_devs[i];
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amba_device_register(d, &iomem_resource);
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diff --git a/sound/soc/bcm/Kconfig b/sound/soc/bcm/Kconfig
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index e563dbc..c621a5e 100644
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--- a/sound/soc/bcm/Kconfig
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+++ b/sound/soc/bcm/Kconfig
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@@ -39,3 +39,10 @@ config SND_BCM2708_SOC_RPI_DAC
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select SND_SOC_PCM1794A
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help
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Say Y or M if you want to add support for RPi-DAC.
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+
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+config SND_BCM2708_SOC_IQAUDIO_DAC
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+ tristate "Support for IQaudIO-DAC"
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+ depends on SND_BCM2708_SOC_I2S
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+ select SND_SOC_PCM512x_I2C
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+ help
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+ Say Y or M if you want to add support for IQaudIO-DAC.
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diff --git a/sound/soc/bcm/Makefile b/sound/soc/bcm/Makefile
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index 826df7d..d597fb0 100644
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--- a/sound/soc/bcm/Makefile
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+++ b/sound/soc/bcm/Makefile
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@@ -12,7 +12,9 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd-soc-bcm2708-i2s.o
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snd-soc-hifiberry-dac-objs := hifiberry_dac.o
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snd-soc-hifiberry-digi-objs := hifiberry_digi.o
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snd-soc-rpi-dac-objs := rpi-dac.o
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+snd-soc-iqaudio-dac-objs := iqaudio-dac.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
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obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
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obj-$(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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diff --git a/sound/soc/bcm/iqaudio-dac.c b/sound/soc/bcm/iqaudio-dac.c
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new file mode 100644
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index 0000000..8d0e2ae
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--- /dev/null
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+++ b/sound/soc/bcm/iqaudio-dac.c
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@@ -0,0 +1,111 @@
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+/*
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+ * ASoC Driver for IQaudIO DAC
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+ *
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+ * Author: Florian Meier <florian.meier@koalo.de>
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+ * Copyright 2013
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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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+static int snd_rpi_iqaudio_dac_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+// NOT USED struct snd_soc_codec *codec = rtd->codec;
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+
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+ return 0;
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+}
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+
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+static int snd_rpi_iqaudio_dac_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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+// NOT USED struct snd_soc_dai *codec_dai = rtd->codec_dai;
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+// NOT USED struct snd_soc_codec *codec = rtd->codec;
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+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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+
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+ unsigned int sample_bits =
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+ snd_pcm_format_physical_width(params_format(params));
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+
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+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
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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_iqaudio_dac_ops = {
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+ .hw_params = snd_rpi_iqaudio_dac_hw_params,
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+};
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+
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+static struct snd_soc_dai_link snd_rpi_iqaudio_dac_dai[] = {
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+{
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+ .name = "IQaudIO DAC",
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+ .stream_name = "IQaudIO 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.1-004c",
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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_iqaudio_dac_ops,
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+ .init = snd_rpi_iqaudio_dac_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_iqaudio_dac = {
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+ .name = "IQaudIODAC",
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+ .dai_link = snd_rpi_iqaudio_dac_dai,
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+ .num_links = ARRAY_SIZE(snd_rpi_iqaudio_dac_dai),
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+};
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+
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+static int snd_rpi_iqaudio_dac_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_iqaudio_dac.dev = &pdev->dev;
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+ ret = snd_soc_register_card(&snd_rpi_iqaudio_dac);
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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_iqaudio_dac_remove(struct platform_device *pdev)
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+{
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+ return snd_soc_unregister_card(&snd_rpi_iqaudio_dac);
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+}
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+
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+static const struct of_device_id iqaudio_of_match[] = {
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+ { .compatible = "iqaudio,iqaudio-dac", },
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+ {},
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+};
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+
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+static struct platform_driver snd_rpi_iqaudio_dac_driver = {
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+ .driver = {
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+ .name = "snd-rpi-iqaudio-dac",
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+ .owner = THIS_MODULE,
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+ .of_match_table = iqaudio_of_match,
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+ },
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+ .probe = snd_rpi_iqaudio_dac_probe,
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+ .remove = snd_rpi_iqaudio_dac_remove,
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+};
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+
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+module_platform_driver(snd_rpi_iqaudio_dac_driver);
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+
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+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
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+MODULE_DESCRIPTION("ASoC Driver for IQAudio DAC");
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+MODULE_LICENSE("GPL v2");
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--
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1.8.3.2
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