diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0044-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0044-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0044-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch b/target/linux/brcm2708/patches-4.1/0044-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch deleted file mode 100644 index 177687da0c..0000000000 --- a/target/linux/brcm2708/patches-4.1/0044-Add-IQaudIO-Sound-Card-support-for-Raspberry-Pi.patch +++ /dev/null @@ -1,201 +0,0 @@ -From f8fb55caae97e04ab68a955eb8946dbee37cd6fe Mon Sep 17 00:00:00 2001 -From: Gordon Garrity <gordon@iqaudio.com> -Date: Sat, 8 Mar 2014 16:56:57 +0000 -Subject: [PATCH 044/222] 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. ---- - arch/arm/mach-bcm2708/bcm2708.c | 21 ++++++++ - sound/soc/bcm/Kconfig | 7 +++ - sound/soc/bcm/Makefile | 2 + - sound/soc/bcm/iqaudio-dac.c | 117 ++++++++++++++++++++++++++++++++++++++++ - 4 files changed, 147 insertions(+) - create mode 100644 sound/soc/bcm/iqaudio-dac.c - ---- a/arch/arm/mach-bcm2708/bcm2708.c -+++ b/arch/arm/mach-bcm2708/bcm2708.c -@@ -681,6 +681,22 @@ static struct platform_device snd_pcm179 - }; - #endif - -+ -+#if defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) || defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC_MODULE) -+static struct platform_device snd_rpi_iqaudio_dac_device = { -+ .name = "snd-rpi-iqaudio-dac", -+ .id = 0, -+ .num_resources = 0, -+}; -+ -+// Use the actual device name rather than generic driver name -+static struct i2c_board_info __initdata snd_pcm512x_i2c_devices[] = { -+ { -+ I2C_BOARD_INFO("pcm5122", 0x4c) -+ }, -+}; -+#endif -+ - int __init bcm_register_device(struct platform_device *pdev) - { - int ret; -@@ -864,6 +880,11 @@ void __init bcm2708_init(void) - bcm_register_device_dt(&snd_pcm1794a_codec_device); - #endif - -+#if defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) || defined(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC_MODULE) -+ bcm_register_device_dt(&snd_rpi_iqaudio_dac_device); -+ i2c_register_board_info_dt(1, snd_pcm512x_i2c_devices, ARRAY_SIZE(snd_pcm512x_i2c_devices)); -+#endif -+ - if (!use_dt) { - for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { - struct amba_device *d = amba_devs[i]; ---- a/sound/soc/bcm/Kconfig -+++ b/sound/soc/bcm/Kconfig -@@ -39,3 +39,10 @@ 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 -@@ -12,7 +12,9 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd - snd-soc-hifiberry-dac-objs := hifiberry_dac.o - snd-soc-hifiberry-digi-objs := hifiberry_digi.o - snd-soc-rpi-dac-objs := rpi-dac.o -+snd-soc-iqaudio-dac-objs := iqaudio-dac.o - - obj-$(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 +1,117 @@ -+/* -+ * 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; -+ struct snd_soc_codec *codec = rtd->codec; -+ -+ ret = snd_soc_limit_volume(codec, "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; -+ 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", }, -+ {}, -+}; -+ -+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"); |