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openwrt/target/linux/brcm2708/patches-3.10/0124-ASoC-BCM2708-Add-support-for-RPi-DAC.patch
Florian Fainelli bb39b8d99a brcm2708: update against latest rpi-3.10.y branch 
Update our copies of the brcm2708 patches to the latest rpi-3.10-y
rebased against linux-3.10.y stable (3.10.32). This should hopefully
make it easier for us in the future to leverage the raspberry/rpi-*
branches.

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 39770
2014-02-28 20:30:08 +00:00

297 lines
8.9 KiB
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From f83ff3e87f95ca90af499af93233fa2732e4dbbb Mon Sep 17 00:00:00 2001
From: Florian Meier <florian.meier@koalo.de>
Date: Fri, 6 Dec 2013 20:50:28 +0100
Subject: [PATCH 124/174] ASoC: BCM2708: Add support for RPi-DAC
This adds a machine driver for the RPi-DAC.
Signed-off-by: Florian Meier <florian.meier@koalo.de>
---
arch/arm/configs/bcmrpi_defconfig | 2 +
arch/arm/mach-bcm2708/bcm2708.c | 19 ++++++++
sound/soc/bcm/Kconfig | 7 +++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/rpi-dac.c | 97 +++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/Kconfig | 4 ++
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/pcm1794a.c | 62 +++++++++++++++++++++++++
8 files changed, 195 insertions(+)
create mode 100644 sound/soc/bcm/rpi-dac.c
create mode 100644 sound/soc/codecs/pcm1794a.c
--- a/arch/arm/configs/bcmrpi_defconfig
+++ b/arch/arm/configs/bcmrpi_defconfig
@@ -738,8 +738,10 @@ CONFIG_SND_SOC_DMAENGINE_PCM=y
CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM=y
CONFIG_SND_BCM2708_SOC_I2S=m
CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
+CONFIG_SND_BCM2708_SOC_RPI_DAC=m
CONFIG_SND_SOC_I2C_AND_SPI=m
CONFIG_SND_SOC_PCM5102A=m
+CONFIG_SND_SOC_PCM1794A=m
CONFIG_SOUND_PRIME=m
CONFIG_HIDRAW=y
CONFIG_HID_A4TECH=m
--- a/arch/arm/mach-bcm2708/bcm2708.c
+++ b/arch/arm/mach-bcm2708/bcm2708.c
@@ -653,6 +653,20 @@ static struct platform_device snd_pcm510
};
#endif
+#if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE)
+static struct platform_device snd_rpi_dac_device = {
+ .name = "snd-rpi-dac",
+ .id = 0,
+ .num_resources = 0,
+};
+
+static struct platform_device snd_pcm1794a_codec_device = {
+ .name = "pcm1794a-codec",
+ .id = -1,
+ .num_resources = 0,
+};
+#endif
+
int __init bcm_register_device(struct platform_device *pdev)
{
int ret;
@@ -788,6 +802,11 @@ void __init bcm2708_init(void)
bcm_register_device(&snd_pcm5102a_codec_device);
#endif
+#if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE)
+ bcm_register_device(&snd_rpi_dac_device);
+ bcm_register_device(&snd_pcm1794a_codec_device);
+#endif
+
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
struct amba_device *d = amba_devs[i];
amba_device_register(d, &iomem_resource);
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -15,3 +15,10 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
select SND_SOC_PCM5102A
help
Say Y or M if you want to add support for HifiBerry DAC.
+
+config SND_BCM2708_SOC_RPI_DAC
+ tristate "Support for RPi-DAC"
+ depends on SND_BCM2708_SOC_I2S
+ select SND_SOC_PCM1794A
+ help
+ Say Y or M if you want to add support for RPi-DAC.
\ No newline at end of file
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -5,5 +5,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd
# BCM2708 Machine Support
snd-soc-hifiberry-dac-objs := hifiberry_dac.o
+snd-soc-rpi-dac-objs := rpi-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
+obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
--- /dev/null
+++ b/sound/soc/bcm/rpi-dac.c
@@ -0,0 +1,97 @@
+/*
+ * ASoC Driver for RPi-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_rpi_dac_init(struct snd_soc_pcm_runtime *rtd)
+{
+ return 0;
+}
+
+static int snd_rpi_rpi_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;
+
+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 32*2);
+}
+
+/* machine stream operations */
+static struct snd_soc_ops snd_rpi_rpi_dac_ops = {
+ .hw_params = snd_rpi_rpi_dac_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_rpi_dac_dai[] = {
+{
+ .name = "HifiBerry Mini",
+ .stream_name = "HifiBerry Mini HiFi",
+ .cpu_dai_name = "bcm2708-i2s.0",
+ .codec_dai_name = "pcm1794a-hifi",
+ .platform_name = "bcm2708-i2s.0",
+ .codec_name = "pcm1794a-codec",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &snd_rpi_rpi_dac_ops,
+ .init = snd_rpi_rpi_dac_init,
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_rpi_dac = {
+ .name = "snd_rpi_rpi_dac",
+ .dai_link = snd_rpi_rpi_dac_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_rpi_dac_dai),
+};
+
+static int snd_rpi_rpi_dac_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_rpi_dac.dev = &pdev->dev;
+ ret = snd_soc_register_card(&snd_rpi_rpi_dac);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+
+ return ret;
+}
+
+static int snd_rpi_rpi_dac_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_rpi_dac);
+}
+
+static struct platform_driver snd_rpi_rpi_dac_driver = {
+ .driver = {
+ .name = "snd-rpi-dac",
+ .owner = THIS_MODULE,
+ },
+ .probe = snd_rpi_rpi_dac_probe,
+ .remove = snd_rpi_rpi_dac_remove,
+};
+
+module_platform_driver(snd_rpi_rpi_dac_driver);
+
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_DESCRIPTION("ASoC Driver for RPi-DAC");
+MODULE_LICENSE("GPL v2");
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -55,6 +55,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_ML26124 if I2C
select SND_SOC_OMAP_HDMI_CODEC if OMAP4_DSS_HDMI
select SND_SOC_PCM3008
+ select SND_SOC_PCM1794A
select SND_SOC_PCM5102A
select SND_SOC_RT5631 if I2C
select SND_SOC_SGTL5000 if I2C
@@ -294,6 +295,9 @@ config SND_SOC_OMAP_HDMI_CODEC
config SND_SOC_PCM3008
tristate
+config SND_SOC_PCM1794A
+ tristate
+
config SND_SOC_PCM5102A
tristate
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -43,6 +43,7 @@ snd-soc-mc13783-objs := mc13783.o
snd-soc-ml26124-objs := ml26124.o
snd-soc-omap-hdmi-codec-objs := omap-hdmi.o
snd-soc-pcm3008-objs := pcm3008.o
+snd-soc-pcm1794a-objs := pcm1794a.o
snd-soc-pcm5102a-objs := pcm5102a.o
snd-soc-rt5631-objs := rt5631.o
snd-soc-sgtl5000-objs := sgtl5000.o
@@ -171,6 +172,7 @@ obj-$(CONFIG_SND_SOC_MC13783) += snd-soc
obj-$(CONFIG_SND_SOC_ML26124) += snd-soc-ml26124.o
obj-$(CONFIG_SND_SOC_OMAP_HDMI_CODEC) += snd-soc-omap-hdmi-codec.o
obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.o
+obj-$(CONFIG_SND_SOC_PCM1794A) += snd-soc-pcm1794a.o
obj-$(CONFIG_SND_SOC_PCM5102A) += snd-soc-pcm5102a.o
obj-$(CONFIG_SND_SOC_RT5631) += snd-soc-rt5631.o
obj-$(CONFIG_SND_SOC_SGTL5000) += snd-soc-sgtl5000.o
--- /dev/null
+++ b/sound/soc/codecs/pcm1794a.c
@@ -0,0 +1,62 @@
+/*
+ * Driver for the PCM1794A codec
+ *
+ * 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/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/soc.h>
+
+static struct snd_soc_dai_driver pcm1794a_dai = {
+ .name = "pcm1794a-hifi",
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE
+ },
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_pcm1794a;
+
+static int pcm1794a_probe(struct platform_device *pdev)
+{
+ return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_pcm1794a,
+ &pcm1794a_dai, 1);
+}
+
+static int pcm1794a_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_codec(&pdev->dev);
+ return 0;
+}
+
+static struct platform_driver pcm1794a_codec_driver = {
+ .probe = pcm1794a_probe,
+ .remove = pcm1794a_remove,
+ .driver = {
+ .name = "pcm1794a-codec",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(pcm1794a_codec_driver);
+
+MODULE_DESCRIPTION("ASoC PCM1794A codec driver");
+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
+MODULE_LICENSE("GPL v2");
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