+++ /dev/null
-From 8ed265197d7a8f9c1a328d262bfe91050716ad76 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>
----
- 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");
projects / openwrt / openwrt.git / blobdiff