From 1f912d3042032514c33736723300b3ed618ddd08 Mon Sep 17 00:00:00 2001
From: IQaudIO <gordon@iqaudio.com>
Date: Mon, 13 May 2019 21:53:05 +0100
Subject: [PATCH] Added IQaudIO Pi-Codec board support (#2969)
Add support for the IQaudIO Pi-Codec board.
Signed-off-by: Gordon <gordon@iqaudio.com>
Fixed 48k timing issue
ASoC: iqaudio-codec: use modern dai_link style
Signed-off-by: Hui Wang <hui.wang@canonical.com>
---
sound/soc/bcm/Kconfig | 7 +
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/iqaudio-codec.c | 274 ++++++++++++++++++++++++++++++++++
3 files changed, 283 insertions(+)
create mode 100644 sound/soc/bcm/iqaudio-codec.c
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -104,6 +104,13 @@ config SND_BCM2708_SOC_JUSTBOOM_DIGI
help
Say Y or M if you want to add support for JustBoom Digi.
+config SND_BCM2708_SOC_IQAUDIO_CODEC
+ tristate "Support for IQaudIO-CODEC"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_SOC_DA7213
+ help
+ Say Y or M if you want to add support for IQaudIO-CODEC.
+
config SND_BCM2708_SOC_IQAUDIO_DAC
tristate "Support for IQaudIO-DAC"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -18,6 +18,7 @@ snd-soc-hifiberry-dacplusadc-objs := hif
snd-soc-justboom-dac-objs := justboom-dac.o
snd-soc-rpi-cirrus-objs := rpi-cirrus.o
snd-soc-rpi-proto-objs := rpi-proto.o
+snd-soc-iqaudio-codec-objs := iqaudio-codec.o
snd-soc-iqaudio-dac-objs := iqaudio-dac.o
snd-soc-i-sabre-q2m-objs := i-sabre-q2m.o
snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
@@ -41,6 +42,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_D
obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
+obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC) += snd-soc-iqaudio-codec.o
obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M) += snd-soc-i-sabre-q2m.o
obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
--- /dev/null
+++ b/sound/soc/bcm/iqaudio-codec.c
@@ -0,0 +1,274 @@
+/*
+ * ASoC Driver for IQaudIO Raspberry Pi Codec board
+ *
+ * Author: Gordon Garrity <gordon@iqaudio.com>
+ * (C) Copyright IQaudio Limited, 2017-2019
+ *
+ * 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/gpio/consumer.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>
+
+#include <linux/acpi.h>
+#include <linux/slab.h>
+#include "../codecs/da7213.h"
+
+static int pll_out = DA7213_PLL_FREQ_OUT_90316800;
+
+static int snd_rpi_iqaudio_pll_control(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ int ret = 0;
+ struct snd_soc_dapm_context *dapm = w->dapm;
+ struct snd_soc_card *card = dapm->card;
+ struct snd_soc_pcm_runtime *rtd =
+ snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+
+ if (SND_SOC_DAPM_EVENT_OFF(event)) {
+ ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_MCLK, 0,
+ 0);
+ if (ret)
+ dev_err(card->dev, "Failed to bypass PLL: %d\n", ret);
+ /* Allow PLL time to bypass */
+ msleep(100);
+ } else if (SND_SOC_DAPM_EVENT_ON(event)) {
+ ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_PLL, 0,
+ pll_out);
+ if (ret)
+ dev_err(card->dev, "Failed to enable PLL: %d\n", ret);
+ /* Allow PLL time to lock */
+ msleep(100);
+ }
+
+ return ret;
+}
+
+static int snd_rpi_iqaudio_post_dapm_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol,
+ int event)
+{
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ /* Delay for mic bias ramp */
+ msleep(1000);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new dapm_controls[] = {
+ SOC_DAPM_PIN_SWITCH("HP Jack"),
+ SOC_DAPM_PIN_SWITCH("MIC Jack"),
+ SOC_DAPM_PIN_SWITCH("Onboard MIC"),
+ SOC_DAPM_PIN_SWITCH("AUX Jack"),
+};
+
+static const struct snd_soc_dapm_widget dapm_widgets[] = {
+ SND_SOC_DAPM_HP("HP Jack", NULL),
+ SND_SOC_DAPM_MIC("MIC Jack", NULL),
+ SND_SOC_DAPM_MIC("Onboard MIC", NULL),
+ SND_SOC_DAPM_LINE("AUX Jack", NULL),
+ SND_SOC_DAPM_SUPPLY("PLL Control", SND_SOC_NOPM, 0, 0,
+ snd_rpi_iqaudio_pll_control,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_POST("Post Power Up Event", snd_rpi_iqaudio_post_dapm_event),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+ {"HP Jack", NULL, "HPL"},
+ {"HP Jack", NULL, "HPR"},
+ {"HP Jack", NULL, "PLL Control"},
+
+ {"AUXR", NULL, "AUX Jack"},
+ {"AUXL", NULL, "AUX Jack"},
+ {"AUX Jack", NULL, "PLL Control"},
+
+ /* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
+ {"MIC1", NULL, "MIC Jack"},
+ {"MIC Jack", NULL, "PLL Control"},
+ {"MIC2", NULL, "Onboard MIC"},
+ {"Onboard MIC", NULL, "PLL Control"},
+};
+
+/* machine stream operations */
+
+static int snd_rpi_iqaudio_codec_init(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+ int ret;
+
+ /*
+ * Disable AUX Jack Pin by default to prevent PLL being enabled at
+ * startup. This avoids holding the PLL to a fixed SR config for
+ * subsequent streams.
+ *
+ * This pin can still be enabled later, as required by user-space.
+ */
+ snd_soc_dapm_disable_pin(&rtd->card->dapm, "AUX Jack");
+ snd_soc_dapm_sync(&rtd->card->dapm);
+
+ /* Set bclk ratio to align with codec's BCLK rate */
+ ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+ if (ret) {
+ dev_err(rtd->dev, "Failed to set CPU BLCK ratio\n");
+ return ret;
+ }
+
+ /* Set MCLK frequency to codec, onboard 11.2896MHz clock */
+ return snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK, 11289600,
+ SND_SOC_CLOCK_OUT);
+}
+
+static int snd_rpi_iqaudio_codec_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ unsigned int samplerate = params_rate(params);
+
+ switch (samplerate) {
+ case 8000:
+ case 16000:
+ case 32000:
+ case 48000:
+ case 96000:
+ pll_out = DA7213_PLL_FREQ_OUT_98304000;
+ return 0;
+ case 44100:
+ case 88200:
+ pll_out = DA7213_PLL_FREQ_OUT_90316800;
+ return 0;
+ default:
+ dev_err(rtd->dev,"Unsupported samplerate %d\n", samplerate);
+ return -EINVAL;
+ }
+}
+
+static const struct snd_soc_ops snd_rpi_iqaudio_codec_ops = {
+ .hw_params = snd_rpi_iqaudio_codec_hw_params,
+};
+
+SND_SOC_DAILINK_DEFS(rpi_iqaudio,
+ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
+ DAILINK_COMP_ARRAY(COMP_CODEC("da7213.1-001a", "da7213-hifi")),
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0")));
+
+static struct snd_soc_dai_link snd_rpi_iqaudio_codec_dai[] = {
+{
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBM_CFM,
+ .init = snd_rpi_iqaudio_codec_init,
+ .ops = &snd_rpi_iqaudio_codec_ops,
+ .symmetric_rates = 1,
+ .symmetric_channels = 1,
+ .symmetric_samplebits = 1,
+ SND_SOC_DAILINK_REG(rpi_iqaudio),
+},
+};
+
+/* audio machine driver */
+static struct snd_soc_card snd_rpi_iqaudio_codec = {
+ .owner = THIS_MODULE,
+ .dai_link = snd_rpi_iqaudio_codec_dai,
+ .num_links = ARRAY_SIZE(snd_rpi_iqaudio_codec_dai),
+ .controls = dapm_controls,
+ .num_controls = ARRAY_SIZE(dapm_controls),
+ .dapm_widgets = dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
+ .dapm_routes = audio_map,
+ .num_dapm_routes = ARRAY_SIZE(audio_map),
+};
+
+static int snd_rpi_iqaudio_codec_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+
+ snd_rpi_iqaudio_codec.dev = &pdev->dev;
+
+ if (pdev->dev.of_node) {
+ struct device_node *i2s_node;
+ struct snd_soc_card *card = &snd_rpi_iqaudio_codec;
+ struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_codec_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;
+ }
+
+ if (of_property_read_string(pdev->dev.of_node, "card_name",
+ &card->name))
+ card->name = "IQaudIOCODEC";
+
+ if (of_property_read_string(pdev->dev.of_node, "dai_name",
+ &dai->name))
+ dai->name = "IQaudIO CODEC";
+
+ if (of_property_read_string(pdev->dev.of_node,
+ "dai_stream_name", &dai->stream_name))
+ dai->stream_name = "IQaudIO CODEC HiFi v1.2";
+
+ }
+
+ ret = snd_soc_register_card(&snd_rpi_iqaudio_codec);
+ if (ret) {
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "snd_soc_register_card() failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int snd_rpi_iqaudio_codec_remove(struct platform_device *pdev)
+{
+ return snd_soc_unregister_card(&snd_rpi_iqaudio_codec);
+}
+
+static const struct of_device_id iqaudio_of_match[] = {
+ { .compatible = "iqaudio,iqaudio-codec", },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, iqaudio_of_match);
+
+static struct platform_driver snd_rpi_iqaudio_codec_driver = {
+ .driver = {
+ .name = "snd-rpi-iqaudio-codec",
+ .owner = THIS_MODULE,
+ .of_match_table = iqaudio_of_match,
+ },
+ .probe = snd_rpi_iqaudio_codec_probe,
+ .remove = snd_rpi_iqaudio_codec_remove,
+};
+
+
+
+module_platform_driver(snd_rpi_iqaudio_codec_driver);
+
+MODULE_AUTHOR("Gordon Garrity <gordon@iqaudio.com>");
+MODULE_DESCRIPTION("ASoC Driver for IQaudIO CODEC");
+MODULE_LICENSE("GPL v2");