diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0073-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0073-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0073-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch b/target/linux/bcm27xx/patches-5.4/950-0073-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch new file mode 100644 index 0000000000..38d81036a2 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0073-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch @@ -0,0 +1,144 @@ +From a1a8a4fb0f50f92f1c42164827dbdfb57007f183 Mon Sep 17 00:00:00 2001 +From: Miquel <miquelblauw@hotmail.com> +Date: Fri, 24 Feb 2017 20:51:06 +0100 +Subject: [PATCH] sound: Support for Dion Audio LOCO-V2 DAC-AMP HAT + +Signed-off-by: Miquel Blauw <info@dionaudio.nl> + +ASoC: dionaudio_loco-v2: fix S24_LE format + +Remove set_bclk_ratio call so 24-bit data is transmitted in +24 bclk cycles. + +Also remove hw_params and ops as they are no longer needed. + +Signed-off-by: Matthias Reichl <hias@horus.com> + +ASoC: dionaudio_loco-v2: use modern dai_link style + +Signed-off-by: Hui Wang <hui.wang@canonical.com> +--- + sound/soc/bcm/dionaudio_loco-v2.c | 117 ++++++++++++++++++++++++++++++ + 1 file changed, 117 insertions(+) + create mode 100644 sound/soc/bcm/dionaudio_loco-v2.c + +--- /dev/null ++++ b/sound/soc/bcm/dionaudio_loco-v2.c +@@ -0,0 +1,117 @@ ++/* ++ * ASoC Driver for Dion Audio LOCO-V2 DAC-AMP ++ * ++ * Author: Miquel Blauw <info@dionaudio.nl> ++ * Copyright 2017 ++ * ++ * Based on the software of the RPi-DAC writen by Florian Meier ++ * ++ * 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 bool digital_gain_0db_limit = true; ++ ++static int snd_rpi_dionaudio_loco_v2_init(struct snd_soc_pcm_runtime *rtd) ++{ ++ if (digital_gain_0db_limit) { ++ 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; ++} ++ ++SND_SOC_DAILINK_DEFS(dionaudio_loco_v2, ++ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")), ++ DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi")), ++ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0"))); ++ ++static struct snd_soc_dai_link snd_rpi_dionaudio_loco_v2_dai[] = { ++{ ++ .name = "DionAudio LOCO-V2", ++ .stream_name = "DionAudio LOCO-V2 DAC-AMP", ++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | ++ SND_SOC_DAIFMT_CBS_CFS, ++ .init = snd_rpi_dionaudio_loco_v2_init, ++ SND_SOC_DAILINK_REG(dionaudio_loco_v2), ++},}; ++ ++/* audio machine driver */ ++static struct snd_soc_card snd_rpi_dionaudio_loco_v2 = { ++ .name = "Dion Audio LOCO-V2", ++ .dai_link = snd_rpi_dionaudio_loco_v2_dai, ++ .num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_v2_dai), ++}; ++ ++static int snd_rpi_dionaudio_loco_v2_probe(struct platform_device *pdev) ++{ ++ int ret = 0; ++ ++ snd_rpi_dionaudio_loco_v2.dev = &pdev->dev; ++ ++ if (pdev->dev.of_node) { ++ struct device_node *i2s_node; ++ struct snd_soc_dai_link *dai = ++ &snd_rpi_dionaudio_loco_v2_dai[0]; ++ ++ i2s_node = of_parse_phandle(pdev->dev.of_node, ++ "i2s-controller", 0); ++ if (i2s_node) { ++ dai->cpus->dai_name = NULL; ++ dai->cpus->of_node = i2s_node; ++ dai->platforms->name = NULL; ++ dai->platforms->of_node = i2s_node; ++ } ++ ++ digital_gain_0db_limit = !of_property_read_bool( ++ pdev->dev.of_node, "dionaudio,24db_digital_gain"); ++ } ++ ++ ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_dionaudio_loco_v2); ++ if (ret) ++ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ++ ret); ++ ++ return ret; ++} ++ ++static const struct of_device_id dionaudio_of_match[] = { ++ { .compatible = "dionaudio,dionaudio-loco-v2", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, dionaudio_of_match); ++ ++static struct platform_driver snd_rpi_dionaudio_loco_v2_driver = { ++ .driver = { ++ .name = "snd-rpi-dionaudio-loco-v2", ++ .owner = THIS_MODULE, ++ .of_match_table = dionaudio_of_match, ++ }, ++ .probe = snd_rpi_dionaudio_loco_v2_probe, ++}; ++ ++module_platform_driver(snd_rpi_dionaudio_loco_v2_driver); ++ ++MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>"); ++MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO-V2"); ++MODULE_LICENSE("GPL v2"); |