mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-28 09:39:00 +00:00
171 lines
5.0 KiB
Diff
171 lines
5.0 KiB
Diff
From 132ffc095977fbd3e3b4099deaba2b80ed4d13ed 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 081/725] 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>
|
|
---
|
|
sound/soc/bcm/fe-pi-audio.c | 152 ++++++++++++++++++++++++++++++++++++
|
|
1 file changed, 152 insertions(+)
|
|
create mode 100644 sound/soc/bcm/fe-pi-audio.c
|
|
|
|
--- /dev/null
|
|
+++ b/sound/soc/bcm/fe-pi-audio.c
|
|
@@ -0,0 +1,152 @@
|
|
+/*
|
|
+ * 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,
|
|
+};
|
|
+
|
|
+static struct snd_soc_dai_link snd_fe_pi_audio_dai[] = {
|
|
+ {
|
|
+ .name = "FE-PI",
|
|
+ .stream_name = "Fe-Pi HiFi",
|
|
+ .cpu_dai_name = "bcm2708-i2s.0",
|
|
+ .codec_dai_name = "sgtl5000",
|
|
+ .platform_name = "bcm2708-i2s.0",
|
|
+ .codec_name = "sgtl5000.1-000a",
|
|
+ .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,
|
|
+ },
|
|
+};
|
|
+
|
|
+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->cpu_dai_name = NULL;
|
|
+ dai->cpu_of_node = i2s_node;
|
|
+ dai->platform_name = NULL;
|
|
+ dai->platform_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");
|