diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0074-Add-support-for-Fe-Pi-audio-sound-card.-1867.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0074-Add-support-for-Fe-Pi-audio-sound-card.-1867.patch | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0074-Add-support-for-Fe-Pi-audio-sound-card.-1867.patch b/target/linux/bcm27xx/patches-5.4/950-0074-Add-support-for-Fe-Pi-audio-sound-card.-1867.patch new file mode 100644 index 0000000000..31e9ded11f --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0074-Add-support-for-Fe-Pi-audio-sound-card.-1867.patch @@ -0,0 +1,176 @@ +From b3d295a256e2649444f91dd8a30bfd31873e714c Mon Sep 17 00:00:00 2001 +From: Fe-Pi <fe-pi@cox.net> +Date: Wed, 1 Mar 2017 04:42:43 -0700 +Subject: [PATCH] Add support for Fe-Pi audio sound card. (#1867) + +Fe-Pi Audio Sound Card is based on NXP SGTL5000 codec. +Mechanical specification of the board is the same the Raspberry Pi Zero. +3.5mm jacks for Headphone/Mic, Line In, and Line Out. + +Signed-off-by: Henry Kupis <fe-pi@cox.net> + +ASoC: fe-pi-audio: use modern dai_link style + +Signed-off-by: Hui Wang <hui.wang@canonical.com> +--- + sound/soc/bcm/fe-pi-audio.c | 154 ++++++++++++++++++++++++++++++++++++ + 1 file changed, 154 insertions(+) + create mode 100644 sound/soc/bcm/fe-pi-audio.c + +--- /dev/null ++++ b/sound/soc/bcm/fe-pi-audio.c +@@ -0,0 +1,154 @@ ++/* ++ * ASoC Driver for Fe-Pi Audio Sound Card ++ * ++ * Author: Henry Kupis <kuupaz@gmail.com> ++ * Copyright 2016 ++ * based on code by Florian Meier <florian.meier@koalo.de> ++ * based on code by Shawn Guo <shawn.guo@linaro.org> ++ * ++ * 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 <linux/io.h> ++ ++#include <sound/core.h> ++#include <sound/pcm.h> ++#include <sound/pcm_params.h> ++#include <sound/soc.h> ++#include <sound/jack.h> ++ ++#include "../codecs/sgtl5000.h" ++ ++static int snd_fe_pi_audio_init(struct snd_soc_pcm_runtime *rtd) ++{ ++ struct snd_soc_card *card = rtd->card; ++ struct snd_soc_component *component = rtd->codec_dai->component; ++ ++ snd_soc_dapm_force_enable_pin(&card->dapm, "LO"); ++ snd_soc_dapm_force_enable_pin(&card->dapm, "ADC"); ++ snd_soc_dapm_force_enable_pin(&card->dapm, "DAC"); ++ snd_soc_dapm_force_enable_pin(&card->dapm, "HP"); ++ snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER, ++ SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP); ++ ++ return 0; ++} ++ ++static int snd_fe_pi_audio_hw_params(struct snd_pcm_substream *substream, ++ struct snd_pcm_hw_params *params) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct device *dev = rtd->card->dev; ++ struct snd_soc_dai *codec_dai = rtd->codec_dai; ++ ++ int ret; ++ ++ /* Set SGTL5000's SYSCLK */ ++ ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, 12288000, SND_SOC_CLOCK_IN); ++ if (ret) { ++ dev_err(dev, "could not set codec driver clock params\n"); ++ return ret; ++ } ++ ++ return 0; ++} ++ ++ ++static struct snd_soc_ops snd_fe_pi_audio_ops = { ++ .hw_params = snd_fe_pi_audio_hw_params, ++}; ++ ++SND_SOC_DAILINK_DEFS(fe_pi, ++ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")), ++ DAILINK_COMP_ARRAY(COMP_CODEC("sgtl5000.1-000a", "sgtl5000")), ++ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0"))); ++ ++static struct snd_soc_dai_link snd_fe_pi_audio_dai[] = { ++ { ++ .name = "FE-PI", ++ .stream_name = "Fe-Pi HiFi", ++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | ++ SND_SOC_DAIFMT_CBM_CFM, ++ .ops = &snd_fe_pi_audio_ops, ++ .init = snd_fe_pi_audio_init, ++ SND_SOC_DAILINK_REG(fe_pi), ++ }, ++}; ++ ++static const struct snd_soc_dapm_route fe_pi_audio_dapm_routes[] = { ++ {"ADC", NULL, "Mic Bias"}, ++}; ++ ++ ++static struct snd_soc_card fe_pi_audio = { ++ .name = "Fe-Pi Audio", ++ .owner = THIS_MODULE, ++ .dai_link = snd_fe_pi_audio_dai, ++ .num_links = ARRAY_SIZE(snd_fe_pi_audio_dai), ++ ++ .dapm_routes = fe_pi_audio_dapm_routes, ++ .num_dapm_routes = ARRAY_SIZE(fe_pi_audio_dapm_routes), ++}; ++ ++static int snd_fe_pi_audio_probe(struct platform_device *pdev) ++{ ++ int ret = 0; ++ struct snd_soc_card *card = &fe_pi_audio; ++ struct device_node *np = pdev->dev.of_node; ++ struct device_node *i2s_node; ++ struct snd_soc_dai_link *dai = &snd_fe_pi_audio_dai[0]; ++ ++ fe_pi_audio.dev = &pdev->dev; ++ ++ i2s_node = of_parse_phandle(np, "i2s-controller", 0); ++ if (!i2s_node) { ++ dev_err(&pdev->dev, "i2s_node phandle missing or invalid\n"); ++ return -EINVAL; ++ } ++ ++ dai->cpus->dai_name = NULL; ++ dai->cpus->of_node = i2s_node; ++ dai->platforms->name = NULL; ++ dai->platforms->of_node = i2s_node; ++ ++ of_node_put(i2s_node); ++ ++ card->dev = &pdev->dev; ++ platform_set_drvdata(pdev, card); ++ ++ ret = devm_snd_soc_register_card(&pdev->dev, card); ++ if (ret && ret != -EPROBE_DEFER) ++ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret); ++ ++ return ret; ++} ++ ++static const struct of_device_id snd_fe_pi_audio_of_match[] = { ++ { .compatible = "fe-pi,fe-pi-audio", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, snd_fe_pi_audio_of_match); ++ ++static struct platform_driver snd_fe_pi_audio_driver = { ++ .driver = { ++ .name = "snd-fe-pi-audio", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_fe_pi_audio_of_match, ++ }, ++ .probe = snd_fe_pi_audio_probe, ++}; ++ ++module_platform_driver(snd_fe_pi_audio_driver); ++ ++MODULE_AUTHOR("Henry Kupis <fe-pi@cox.net>"); ++MODULE_DESCRIPTION("ASoC Driver for Fe-Pi Audio"); ++MODULE_LICENSE("GPL v2"); |