1 files changed, 0 insertions, 178 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0068-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch b/target/linux/brcm2708/patches-4.4/0068-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch
deleted file mode 100644
index fa6575a..0000000
--- a/target/linux/brcm2708/patches-4.4/0068-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch
+++ /dev/null
@@ -1,178 +0,0 @@
-From 969d62154904b2a99a3531a41716025f281d96c5 Mon Sep 17 00:00:00 2001
-From: Gordon Garrity <gordon@iqaudio.com>
-Date: Sat, 8 Mar 2014 16:56:57 +0000
-Subject: [PATCH] Add IQaudIO Sound Card support for Raspberry Pi
-
-Set a limit of 0dB on Digital Volume Control
-
-The main volume control in the PCM512x DAC has a range up to
-+24dB. This is dangerously loud and can potentially cause massive
-clipping in the output stages. Therefore this sets a sensible
-limit of 0dB for this control.
----
- sound/soc/bcm/Kconfig       |   7 +++
- sound/soc/bcm/Makefile      |   2 +
- sound/soc/bcm/iqaudio-dac.c | 132 ++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 141 insertions(+)
- create mode 100644 sound/soc/bcm/iqaudio-dac.c
-
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -28,3 +28,10 @@ config SND_BCM2708_SOC_RPI_DAC
-         select SND_SOC_PCM1794A
-         help
-          Say Y or M if you want to add support for RPi-DAC.
-+
-+config SND_BCM2708_SOC_IQAUDIO_DAC
-+	tristate "Support for IQaudIO-DAC"
-+	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-+	select SND_SOC_PCM512x_I2C
-+	help
-+	  Say Y or M if you want to add support for IQaudIO-DAC.
---- a/sound/soc/bcm/Makefile
-+++ b/sound/soc/bcm/Makefile
-@@ -7,7 +7,9 @@ obj-$(CONFIG_SND_BCM2835_SOC_I2S) += snd
- snd-soc-hifiberry-dac-objs := hifiberry_dac.o
- snd-soc-hifiberry-digi-objs := hifiberry_digi.o
- snd-soc-rpi-dac-objs := rpi-dac.o
-+snd-soc-iqaudio-dac-objs := iqaudio-dac.o
- 
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
- obj-$(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/iqaudio-dac.c
-@@ -0,0 +1,132 @@
-+/*
-+ * ASoC Driver for IQaudIO 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_iqaudio_dac_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+	int ret;
-+	struct snd_soc_card *card = rtd->card;
-+
-+	ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
-+	if (ret < 0)
-+		dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
-+
-+	return 0;
-+}
-+
-+static int snd_rpi_iqaudio_dac_hw_params(struct snd_pcm_substream *substream,
-+				       struct snd_pcm_hw_params *params)
-+{
-+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+// NOT USED	struct snd_soc_dai *codec_dai = rtd->codec_dai;
-+// NOT USED	struct snd_soc_codec *codec = rtd->codec;
-+	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_iqaudio_dac_ops = {
-+	.hw_params = snd_rpi_iqaudio_dac_hw_params,
-+};
-+
-+static struct snd_soc_dai_link snd_rpi_iqaudio_dac_dai[] = {
-+{
-+	.name		= "IQaudIO DAC",
-+	.stream_name	= "IQaudIO DAC HiFi",
-+	.cpu_dai_name	= "bcm2708-i2s.0",
-+	.codec_dai_name	= "pcm512x-hifi",
-+	.platform_name	= "bcm2708-i2s.0",
-+	.codec_name	= "pcm512x.1-004c",
-+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-+				SND_SOC_DAIFMT_CBS_CFS,
-+	.ops		= &snd_rpi_iqaudio_dac_ops,
-+	.init		= snd_rpi_iqaudio_dac_init,
-+},
-+};
-+
-+/* audio machine driver */
-+static struct snd_soc_card snd_rpi_iqaudio_dac = {
-+	.name         = "IQaudIODAC",
-+	.dai_link     = snd_rpi_iqaudio_dac_dai,
-+	.num_links    = ARRAY_SIZE(snd_rpi_iqaudio_dac_dai),
-+};
-+
-+static int snd_rpi_iqaudio_dac_probe(struct platform_device *pdev)
-+{
-+	int ret = 0;
-+
-+	snd_rpi_iqaudio_dac.dev = &pdev->dev;
-+
-+	if (pdev->dev.of_node) {
-+	    struct device_node *i2s_node;
-+	    struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_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_iqaudio_dac);
-+	if (ret)
-+		dev_err(&pdev->dev,
-+			"snd_soc_register_card() failed: %d\n", ret);
-+
-+	return ret;
-+}
-+
-+static int snd_rpi_iqaudio_dac_remove(struct platform_device *pdev)
-+{
-+	return snd_soc_unregister_card(&snd_rpi_iqaudio_dac);
-+}
-+
-+static const struct of_device_id iqaudio_of_match[] = {
-+	{ .compatible = "iqaudio,iqaudio-dac", },
-+	{},
-+};
-+MODULE_DEVICE_TABLE(of, iqaudio_of_match);
-+
-+static struct platform_driver snd_rpi_iqaudio_dac_driver = {
-+	.driver = {
-+		.name   = "snd-rpi-iqaudio-dac",
-+		.owner  = THIS_MODULE,
-+		.of_match_table = iqaudio_of_match,
-+	},
-+	.probe          = snd_rpi_iqaudio_dac_probe,
-+	.remove         = snd_rpi_iqaudio_dac_remove,
-+};
-+
-+module_platform_driver(snd_rpi_iqaudio_dac_driver);
-+
-+MODULE_AUTHOR("Florian Meier <florian.meier@koalo.de>");
-+MODULE_DESCRIPTION("ASoC Driver for IQAudio DAC");
-+MODULE_LICENSE("GPL v2");