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Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0082-Add-support-for-the-AudioInjector.net-Octo-sound-car.patch')
-rw-r--r--target/linux/brcm2708/patches-4.19/950-0082-Add-support-for-the-AudioInjector.net-Octo-sound-car.patch374
1 files changed, 374 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0082-Add-support-for-the-AudioInjector.net-Octo-sound-car.patch b/target/linux/brcm2708/patches-4.19/950-0082-Add-support-for-the-AudioInjector.net-Octo-sound-car.patch
new file mode 100644
index 0000000000..856d4c2829
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0082-Add-support-for-the-AudioInjector.net-Octo-sound-car.patch
@@ -0,0 +1,374 @@
+From e95def09872db37a8e577da0882a113f68476af4 Mon Sep 17 00:00:00 2001
+From: Matt Flax <flatmax@flatmax.org>
+Date: Wed, 8 Mar 2017 20:04:13 +1100
+Subject: [PATCH 082/703] Add support for the AudioInjector.net Octo sound card
+
+AudioInjector Octo: sample rates, regulators, reset
+
+This patch adds new sample rates to the Audioinjector Octo sound card. The
+new supported rates are (in kHz) :
+96, 48, 32, 24, 16, 8, 88.2, 44.1, 29.4, 22.05, 14.7
+
+Reference the bcm270x DT regulators in the overlay.
+
+This patch adds a reset GPIO for the AudioInjector.net octo sound card.
+
+Audioinjector octo : Make the playback and capture symmetric
+
+This patch ensures that the sample rate and channel count of the audioinjector
+octo sound card are symmetric.
+
+audioinjector-octo: Add continuous clock feature
+
+By user request, add a switch to prevent the clocks being stopped when
+the stream is paused, stopped or shutdown. Provide access to the switch
+by adding a 'non-stop-clocks' parameter to the audioinjector-addons
+overlay.
+
+See: https://github.com/raspberrypi/linux/issues/2409
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ sound/soc/bcm/audioinjector-octo-soundcard.c | 336 +++++++++++++++++++
+ 1 file changed, 336 insertions(+)
+ create mode 100644 sound/soc/bcm/audioinjector-octo-soundcard.c
+
+--- /dev/null
++++ b/sound/soc/bcm/audioinjector-octo-soundcard.c
+@@ -0,0 +1,336 @@
++/*
++ * ASoC Driver for AudioInjector Pi octo channel soundcard (hat)
++ *
++ * Created on: 27-October-2016
++ * Author: flatmax@flatmax.org
++ * based on audioinjector-pi-soundcard.c
++ *
++ * Copyright (C) 2016 Flatmax Pty. Ltd.
++ *
++ * 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/types.h>
++#include <linux/gpio/consumer.h>
++
++#include <sound/core.h>
++#include <sound/soc.h>
++#include <sound/pcm_params.h>
++#include <sound/control.h>
++
++static struct gpio_descs *mult_gpios;
++static struct gpio_desc *codec_rst_gpio;
++static unsigned int audioinjector_octo_rate;
++static bool non_stop_clocks;
++
++static const unsigned int audioinjector_octo_rates[] = {
++ 96000, 48000, 32000, 24000, 16000, 8000, 88200, 44100, 29400, 22050, 14700,
++};
++
++static struct snd_pcm_hw_constraint_list audioinjector_octo_constraints = {
++ .list = audioinjector_octo_rates,
++ .count = ARRAY_SIZE(audioinjector_octo_rates),
++};
++
++static int audioinjector_octo_dai_init(struct snd_soc_pcm_runtime *rtd)
++{
++ return snd_soc_dai_set_bclk_ratio(rtd->cpu_dai, 64);
++}
++
++static int audioinjector_octo_startup(struct snd_pcm_substream *substream)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ rtd->cpu_dai->driver->playback.channels_min = 8;
++ rtd->cpu_dai->driver->playback.channels_max = 8;
++ rtd->cpu_dai->driver->capture.channels_min = 8;
++ rtd->cpu_dai->driver->capture.channels_max = 8;
++ rtd->codec_dai->driver->capture.channels_max = 8;
++
++ snd_pcm_hw_constraint_list(substream->runtime, 0,
++ SNDRV_PCM_HW_PARAM_RATE,
++ &audioinjector_octo_constraints);
++
++ return 0;
++}
++
++static void audioinjector_octo_shutdown(struct snd_pcm_substream *substream)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ rtd->cpu_dai->driver->playback.channels_min = 2;
++ rtd->cpu_dai->driver->playback.channels_max = 2;
++ rtd->cpu_dai->driver->capture.channels_min = 2;
++ rtd->cpu_dai->driver->capture.channels_max = 2;
++ rtd->codec_dai->driver->capture.channels_max = 6;
++}
++
++static int audioinjector_octo_hw_params(struct snd_pcm_substream *substream,
++ struct snd_pcm_hw_params *params)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++
++ // set codec DAI configuration
++ int ret = snd_soc_dai_set_fmt(rtd->codec_dai,
++ SND_SOC_DAIFMT_CBS_CFS|SND_SOC_DAIFMT_DSP_A|
++ SND_SOC_DAIFMT_NB_NF);
++ if (ret < 0)
++ return ret;
++
++ // set cpu DAI configuration
++ ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
++ SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|
++ SND_SOC_DAIFMT_NB_NF);
++ if (ret < 0)
++ return ret;
++
++ audioinjector_octo_rate = params_rate(params);
++
++ // Set the correct sysclock for the codec
++ switch (audioinjector_octo_rate) {
++ case 96000:
++ case 48000:
++ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000,
++ 0);
++ break;
++ case 24000:
++ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/2,
++ 0);
++ break;
++ case 32000:
++ case 16000:
++ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/3,
++ 0);
++ break;
++ case 8000:
++ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/6,
++ 0);
++ break;
++ case 88200:
++ case 44100:
++ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400,
++ 0);
++ break;
++ case 22050:
++ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400/2,
++ 0);
++ break;
++ case 29400:
++ case 14700:
++ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400/3,
++ 0);
++ break;
++ default:
++ return -EINVAL;
++ }
++}
++
++static int audioinjector_octo_trigger(struct snd_pcm_substream *substream,
++ int cmd){
++ int mult[4];
++
++ memset(mult, 0, sizeof(mult));
++
++ switch (cmd) {
++ case SNDRV_PCM_TRIGGER_STOP:
++ case SNDRV_PCM_TRIGGER_SUSPEND:
++ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++ if (!non_stop_clocks)
++ break;
++ /* Drop through... */
++ case SNDRV_PCM_TRIGGER_START:
++ case SNDRV_PCM_TRIGGER_RESUME:
++ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++ switch (audioinjector_octo_rate) {
++ case 96000:
++ mult[3] = 1;
++ case 88200:
++ mult[1] = 1;
++ mult[2] = 1;
++ break;
++ case 48000:
++ mult[3] = 1;
++ case 44100:
++ mult[2] = 1;
++ break;
++ case 32000:
++ mult[3] = 1;
++ case 29400:
++ mult[0] = 1;
++ mult[1] = 1;
++ break;
++ case 24000:
++ mult[3] = 1;
++ case 22050:
++ mult[1] = 1;
++ break;
++ case 16000:
++ mult[3] = 1;
++ case 14700:
++ mult[0] = 1;
++ break;
++ case 8000:
++ mult[3] = 1;
++ break;
++ default:
++ return -EINVAL;
++ }
++ break;
++ default:
++ return -EINVAL;
++ }
++ gpiod_set_array_value_cansleep(mult_gpios->ndescs, mult_gpios->desc,
++ mult);
++
++ return 0;
++}
++
++static struct snd_soc_ops audioinjector_octo_ops = {
++ .startup = audioinjector_octo_startup,
++ .shutdown = audioinjector_octo_shutdown,
++ .hw_params = audioinjector_octo_hw_params,
++ .trigger = audioinjector_octo_trigger,
++};
++
++static struct snd_soc_dai_link audioinjector_octo_dai[] = {
++ {
++ .name = "AudioInjector Octo",
++ .stream_name = "AudioInject-HIFI",
++ .codec_dai_name = "cs42448",
++ .ops = &audioinjector_octo_ops,
++ .init = audioinjector_octo_dai_init,
++ .symmetric_rates = 1,
++ .symmetric_channels = 1,
++ },
++};
++
++static const struct snd_soc_dapm_widget audioinjector_octo_widgets[] = {
++ SND_SOC_DAPM_OUTPUT("OUTPUTS0"),
++ SND_SOC_DAPM_OUTPUT("OUTPUTS1"),
++ SND_SOC_DAPM_OUTPUT("OUTPUTS2"),
++ SND_SOC_DAPM_OUTPUT("OUTPUTS3"),
++ SND_SOC_DAPM_INPUT("INPUTS0"),
++ SND_SOC_DAPM_INPUT("INPUTS1"),
++ SND_SOC_DAPM_INPUT("INPUTS2"),
++};
++
++static const struct snd_soc_dapm_route audioinjector_octo_route[] = {
++ /* Balanced outputs */
++ {"OUTPUTS0", NULL, "AOUT1L"},
++ {"OUTPUTS0", NULL, "AOUT1R"},
++ {"OUTPUTS1", NULL, "AOUT2L"},
++ {"OUTPUTS1", NULL, "AOUT2R"},
++ {"OUTPUTS2", NULL, "AOUT3L"},
++ {"OUTPUTS2", NULL, "AOUT3R"},
++ {"OUTPUTS3", NULL, "AOUT4L"},
++ {"OUTPUTS3", NULL, "AOUT4R"},
++
++ /* Balanced inputs */
++ {"AIN1L", NULL, "INPUTS0"},
++ {"AIN1R", NULL, "INPUTS0"},
++ {"AIN2L", NULL, "INPUTS1"},
++ {"AIN2R", NULL, "INPUTS1"},
++ {"AIN3L", NULL, "INPUTS2"},
++ {"AIN3R", NULL, "INPUTS2"},
++};
++
++static struct snd_soc_card snd_soc_audioinjector_octo = {
++ .name = "audioinjector-octo-soundcard",
++ .dai_link = audioinjector_octo_dai,
++ .num_links = ARRAY_SIZE(audioinjector_octo_dai),
++
++ .dapm_widgets = audioinjector_octo_widgets,
++ .num_dapm_widgets = ARRAY_SIZE(audioinjector_octo_widgets),
++ .dapm_routes = audioinjector_octo_route,
++ .num_dapm_routes = ARRAY_SIZE(audioinjector_octo_route),
++};
++
++static int audioinjector_octo_probe(struct platform_device *pdev)
++{
++ struct snd_soc_card *card = &snd_soc_audioinjector_octo;
++ int ret;
++
++ card->dev = &pdev->dev;
++
++ if (pdev->dev.of_node) {
++ struct snd_soc_dai_link *dai = &audioinjector_octo_dai[0];
++ struct device_node *i2s_node =
++ of_parse_phandle(pdev->dev.of_node,
++ "i2s-controller", 0);
++ struct device_node *codec_node =
++ of_parse_phandle(pdev->dev.of_node,
++ "codec", 0);
++
++ mult_gpios = devm_gpiod_get_array_optional(&pdev->dev, "mult",
++ GPIOD_OUT_LOW);
++ if (IS_ERR(mult_gpios))
++ return PTR_ERR(mult_gpios);
++
++ codec_rst_gpio = devm_gpiod_get_optional(&pdev->dev, "reset",
++ GPIOD_OUT_LOW);
++ if (IS_ERR(codec_rst_gpio))
++ return PTR_ERR(codec_rst_gpio);
++
++ non_stop_clocks = of_property_read_bool(pdev->dev.of_node, "non-stop-clocks");
++
++ if (codec_rst_gpio)
++ gpiod_set_value(codec_rst_gpio, 1);
++ msleep(500);
++ if (codec_rst_gpio)
++ gpiod_set_value(codec_rst_gpio, 0);
++ msleep(500);
++ if (codec_rst_gpio)
++ gpiod_set_value(codec_rst_gpio, 1);
++ msleep(500);
++
++ if (i2s_node && codec_node) {
++ dai->cpu_dai_name = NULL;
++ dai->cpu_of_node = i2s_node;
++ dai->platform_name = NULL;
++ dai->platform_of_node = i2s_node;
++ dai->codec_name = NULL;
++ dai->codec_of_node = codec_node;
++ } else
++ if (!dai->cpu_of_node) {
++ dev_err(&pdev->dev,
++ "i2s-controller missing or invalid in DT\n");
++ return -EINVAL;
++ } else {
++ dev_err(&pdev->dev,
++ "Property 'codec' missing or invalid\n");
++ return -EINVAL;
++ }
++ }
++
++ ret = devm_snd_soc_register_card(&pdev->dev, card);
++ if (ret != 0)
++ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
++ return ret;
++}
++
++static const struct of_device_id audioinjector_octo_of_match[] = {
++ { .compatible = "ai,audioinjector-octo-soundcard", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, audioinjector_octo_of_match);
++
++static struct platform_driver audioinjector_octo_driver = {
++ .driver = {
++ .name = "audioinjector-octo",
++ .owner = THIS_MODULE,
++ .of_match_table = audioinjector_octo_of_match,
++ },
++ .probe = audioinjector_octo_probe,
++};
++
++module_platform_driver(audioinjector_octo_driver);
++MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
++MODULE_DESCRIPTION("AudioInjector.net octo Soundcard");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:audioinjector-octo-soundcard");
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