a1383655cf
Tested on bcm2710 (Raspberry Pi 3B). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
177 lines
5.1 KiB
Diff
177 lines
5.1 KiB
Diff
From b3d295a256e2649444f91dd8a30bfd31873e714c Mon Sep 17 00:00:00 2001
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From: Fe-Pi <fe-pi@cox.net>
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Date: Wed, 1 Mar 2017 04:42:43 -0700
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Subject: [PATCH] Add support for Fe-Pi audio sound card. (#1867)
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Fe-Pi Audio Sound Card is based on NXP SGTL5000 codec.
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Mechanical specification of the board is the same the Raspberry Pi Zero.
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3.5mm jacks for Headphone/Mic, Line In, and Line Out.
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Signed-off-by: Henry Kupis <fe-pi@cox.net>
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ASoC: fe-pi-audio: use modern dai_link style
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Signed-off-by: Hui Wang <hui.wang@canonical.com>
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---
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sound/soc/bcm/fe-pi-audio.c | 154 ++++++++++++++++++++++++++++++++++++
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1 file changed, 154 insertions(+)
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create mode 100644 sound/soc/bcm/fe-pi-audio.c
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--- /dev/null
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+++ b/sound/soc/bcm/fe-pi-audio.c
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@@ -0,0 +1,154 @@
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+/*
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+ * ASoC Driver for Fe-Pi Audio Sound Card
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+ *
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+ * Author: Henry Kupis <kuupaz@gmail.com>
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+ * Copyright 2016
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+ * based on code by Florian Meier <florian.meier@koalo.de>
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+ * based on code by Shawn Guo <shawn.guo@linaro.org>
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * version 2 as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+#include <linux/io.h>
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+
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+#include <sound/core.h>
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+#include <sound/pcm.h>
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+#include <sound/pcm_params.h>
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+#include <sound/soc.h>
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+#include <sound/jack.h>
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+
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+#include "../codecs/sgtl5000.h"
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+
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+static int snd_fe_pi_audio_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ struct snd_soc_card *card = rtd->card;
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+ struct snd_soc_component *component = rtd->codec_dai->component;
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+
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+ snd_soc_dapm_force_enable_pin(&card->dapm, "LO");
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+ snd_soc_dapm_force_enable_pin(&card->dapm, "ADC");
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+ snd_soc_dapm_force_enable_pin(&card->dapm, "DAC");
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+ snd_soc_dapm_force_enable_pin(&card->dapm, "HP");
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+ snd_soc_component_update_bits(component, SGTL5000_CHIP_ANA_POWER,
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+ SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
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+
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+ return 0;
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+}
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+
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+static int snd_fe_pi_audio_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct device *dev = rtd->card->dev;
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+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
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+
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+ int ret;
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+
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+ /* Set SGTL5000's SYSCLK */
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+ ret = snd_soc_dai_set_sysclk(codec_dai, SGTL5000_SYSCLK, 12288000, SND_SOC_CLOCK_IN);
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+ if (ret) {
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+ dev_err(dev, "could not set codec driver clock params\n");
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+
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+static struct snd_soc_ops snd_fe_pi_audio_ops = {
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+ .hw_params = snd_fe_pi_audio_hw_params,
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+};
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+
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+SND_SOC_DAILINK_DEFS(fe_pi,
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+ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
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+ DAILINK_COMP_ARRAY(COMP_CODEC("sgtl5000.1-000a", "sgtl5000")),
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+ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
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+
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+static struct snd_soc_dai_link snd_fe_pi_audio_dai[] = {
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+ {
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+ .name = "FE-PI",
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+ .stream_name = "Fe-Pi HiFi",
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+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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+ SND_SOC_DAIFMT_CBM_CFM,
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+ .ops = &snd_fe_pi_audio_ops,
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+ .init = snd_fe_pi_audio_init,
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+ SND_SOC_DAILINK_REG(fe_pi),
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+ },
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+};
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+
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+static const struct snd_soc_dapm_route fe_pi_audio_dapm_routes[] = {
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+ {"ADC", NULL, "Mic Bias"},
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+};
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+
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+
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+static struct snd_soc_card fe_pi_audio = {
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+ .name = "Fe-Pi Audio",
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+ .owner = THIS_MODULE,
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+ .dai_link = snd_fe_pi_audio_dai,
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+ .num_links = ARRAY_SIZE(snd_fe_pi_audio_dai),
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+
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+ .dapm_routes = fe_pi_audio_dapm_routes,
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+ .num_dapm_routes = ARRAY_SIZE(fe_pi_audio_dapm_routes),
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+};
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+
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+static int snd_fe_pi_audio_probe(struct platform_device *pdev)
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+{
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+ int ret = 0;
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+ struct snd_soc_card *card = &fe_pi_audio;
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+ struct device_node *np = pdev->dev.of_node;
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+ struct device_node *i2s_node;
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+ struct snd_soc_dai_link *dai = &snd_fe_pi_audio_dai[0];
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+
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+ fe_pi_audio.dev = &pdev->dev;
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+
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+ i2s_node = of_parse_phandle(np, "i2s-controller", 0);
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+ if (!i2s_node) {
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+ dev_err(&pdev->dev, "i2s_node phandle missing or invalid\n");
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+ return -EINVAL;
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+ }
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+
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+ dai->cpus->dai_name = NULL;
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+ dai->cpus->of_node = i2s_node;
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+ dai->platforms->name = NULL;
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+ dai->platforms->of_node = i2s_node;
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+
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+ of_node_put(i2s_node);
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+
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+ card->dev = &pdev->dev;
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+ platform_set_drvdata(pdev, card);
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+
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+ ret = devm_snd_soc_register_card(&pdev->dev, card);
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+ if (ret && ret != -EPROBE_DEFER)
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+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
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+
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+ return ret;
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+}
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+
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+static const struct of_device_id snd_fe_pi_audio_of_match[] = {
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+ { .compatible = "fe-pi,fe-pi-audio", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, snd_fe_pi_audio_of_match);
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+
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+static struct platform_driver snd_fe_pi_audio_driver = {
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+ .driver = {
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+ .name = "snd-fe-pi-audio",
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+ .owner = THIS_MODULE,
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+ .of_match_table = snd_fe_pi_audio_of_match,
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+ },
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+ .probe = snd_fe_pi_audio_probe,
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+};
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+
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+module_platform_driver(snd_fe_pi_audio_driver);
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+
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+MODULE_AUTHOR("Henry Kupis <fe-pi@cox.net>");
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+MODULE_DESCRIPTION("ASoC Driver for Fe-Pi Audio");
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+MODULE_LICENSE("GPL v2");
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