+++ /dev/null
-From 846864bceccdafbed86c1b1766500861547b0da9 Mon Sep 17 00:00:00 2001
-From: Matt Flax <flatmax@flatmax.org>
-Date: Wed, 8 Mar 2017 20:04:13 +1100
-Subject: [PATCH] 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");
projects / openwrt / openwrt.git / blobdiff