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https://git.openwrt.org/openwrt/openwrt.git
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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
375 lines
10 KiB
Diff
375 lines
10 KiB
Diff
From 846864bceccdafbed86c1b1766500861547b0da9 Mon Sep 17 00:00:00 2001
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From: Matt Flax <flatmax@flatmax.org>
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Date: Wed, 8 Mar 2017 20:04:13 +1100
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Subject: [PATCH] Add support for the AudioInjector.net Octo sound card
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AudioInjector Octo: sample rates, regulators, reset
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This patch adds new sample rates to the Audioinjector Octo sound card. The
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new supported rates are (in kHz) :
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96, 48, 32, 24, 16, 8, 88.2, 44.1, 29.4, 22.05, 14.7
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Reference the bcm270x DT regulators in the overlay.
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This patch adds a reset GPIO for the AudioInjector.net octo sound card.
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Audioinjector octo : Make the playback and capture symmetric
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This patch ensures that the sample rate and channel count of the audioinjector
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octo sound card are symmetric.
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audioinjector-octo: Add continuous clock feature
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By user request, add a switch to prevent the clocks being stopped when
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the stream is paused, stopped or shutdown. Provide access to the switch
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by adding a 'non-stop-clocks' parameter to the audioinjector-addons
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overlay.
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See: https://github.com/raspberrypi/linux/issues/2409
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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sound/soc/bcm/audioinjector-octo-soundcard.c | 336 +++++++++++++++++++
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1 file changed, 336 insertions(+)
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create mode 100644 sound/soc/bcm/audioinjector-octo-soundcard.c
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--- /dev/null
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+++ b/sound/soc/bcm/audioinjector-octo-soundcard.c
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@@ -0,0 +1,336 @@
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+/*
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+ * ASoC Driver for AudioInjector Pi octo channel soundcard (hat)
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+ *
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+ * Created on: 27-October-2016
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+ * Author: flatmax@flatmax.org
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+ * based on audioinjector-pi-soundcard.c
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+ *
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+ * Copyright (C) 2016 Flatmax Pty. Ltd.
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * version 2 as published by the Free Software Foundation.
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+ *
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+ * This program is distributed in the hope that it will be useful, but
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+ * WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ * General Public License for more details.
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/types.h>
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+#include <linux/gpio/consumer.h>
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+
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+#include <sound/core.h>
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+#include <sound/soc.h>
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+#include <sound/pcm_params.h>
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+#include <sound/control.h>
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+
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+static struct gpio_descs *mult_gpios;
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+static struct gpio_desc *codec_rst_gpio;
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+static unsigned int audioinjector_octo_rate;
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+static bool non_stop_clocks;
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+
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+static const unsigned int audioinjector_octo_rates[] = {
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+ 96000, 48000, 32000, 24000, 16000, 8000, 88200, 44100, 29400, 22050, 14700,
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+};
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+
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+static struct snd_pcm_hw_constraint_list audioinjector_octo_constraints = {
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+ .list = audioinjector_octo_rates,
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+ .count = ARRAY_SIZE(audioinjector_octo_rates),
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+};
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+
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+static int audioinjector_octo_dai_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ return snd_soc_dai_set_bclk_ratio(rtd->cpu_dai, 64);
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+}
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+
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+static int audioinjector_octo_startup(struct snd_pcm_substream *substream)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ rtd->cpu_dai->driver->playback.channels_min = 8;
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+ rtd->cpu_dai->driver->playback.channels_max = 8;
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+ rtd->cpu_dai->driver->capture.channels_min = 8;
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+ rtd->cpu_dai->driver->capture.channels_max = 8;
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+ rtd->codec_dai->driver->capture.channels_max = 8;
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+
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+ snd_pcm_hw_constraint_list(substream->runtime, 0,
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+ SNDRV_PCM_HW_PARAM_RATE,
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+ &audioinjector_octo_constraints);
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+
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+ return 0;
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+}
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+
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+static void audioinjector_octo_shutdown(struct snd_pcm_substream *substream)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ rtd->cpu_dai->driver->playback.channels_min = 2;
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+ rtd->cpu_dai->driver->playback.channels_max = 2;
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+ rtd->cpu_dai->driver->capture.channels_min = 2;
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+ rtd->cpu_dai->driver->capture.channels_max = 2;
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+ rtd->codec_dai->driver->capture.channels_max = 6;
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+}
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+
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+static int audioinjector_octo_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+
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+ // set codec DAI configuration
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+ int ret = snd_soc_dai_set_fmt(rtd->codec_dai,
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+ SND_SOC_DAIFMT_CBS_CFS|SND_SOC_DAIFMT_DSP_A|
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+ SND_SOC_DAIFMT_NB_NF);
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+ if (ret < 0)
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+ return ret;
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+
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+ // set cpu DAI configuration
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+ ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
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+ SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|
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+ SND_SOC_DAIFMT_NB_NF);
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+ if (ret < 0)
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+ return ret;
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+
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+ audioinjector_octo_rate = params_rate(params);
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+
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+ // Set the correct sysclock for the codec
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+ switch (audioinjector_octo_rate) {
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+ case 96000:
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+ case 48000:
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+ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000,
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+ 0);
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+ break;
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+ case 24000:
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+ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/2,
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+ 0);
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+ break;
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+ case 32000:
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+ case 16000:
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+ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/3,
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+ 0);
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+ break;
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+ case 8000:
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+ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/6,
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+ 0);
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+ break;
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+ case 88200:
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+ case 44100:
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+ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400,
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+ 0);
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+ break;
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+ case 22050:
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+ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400/2,
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+ 0);
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+ break;
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+ case 29400:
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+ case 14700:
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+ return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400/3,
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+ 0);
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+}
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+
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+static int audioinjector_octo_trigger(struct snd_pcm_substream *substream,
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+ int cmd){
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+ int mult[4];
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+
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+ memset(mult, 0, sizeof(mult));
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+
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+ switch (cmd) {
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+ case SNDRV_PCM_TRIGGER_STOP:
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+ case SNDRV_PCM_TRIGGER_SUSPEND:
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+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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+ if (!non_stop_clocks)
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+ break;
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+ /* Drop through... */
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+ case SNDRV_PCM_TRIGGER_START:
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+ case SNDRV_PCM_TRIGGER_RESUME:
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+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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+ switch (audioinjector_octo_rate) {
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+ case 96000:
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+ mult[3] = 1;
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+ case 88200:
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+ mult[1] = 1;
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+ mult[2] = 1;
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+ break;
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+ case 48000:
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+ mult[3] = 1;
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+ case 44100:
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+ mult[2] = 1;
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+ break;
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+ case 32000:
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+ mult[3] = 1;
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+ case 29400:
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+ mult[0] = 1;
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+ mult[1] = 1;
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+ break;
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+ case 24000:
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+ mult[3] = 1;
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+ case 22050:
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+ mult[1] = 1;
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+ break;
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+ case 16000:
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+ mult[3] = 1;
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+ case 14700:
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+ mult[0] = 1;
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+ break;
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+ case 8000:
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+ mult[3] = 1;
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+ gpiod_set_array_value_cansleep(mult_gpios->ndescs, mult_gpios->desc,
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+ mult);
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+
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+ return 0;
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+}
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+
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+static struct snd_soc_ops audioinjector_octo_ops = {
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+ .startup = audioinjector_octo_startup,
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+ .shutdown = audioinjector_octo_shutdown,
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+ .hw_params = audioinjector_octo_hw_params,
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+ .trigger = audioinjector_octo_trigger,
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+};
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+
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+static struct snd_soc_dai_link audioinjector_octo_dai[] = {
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+ {
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+ .name = "AudioInjector Octo",
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+ .stream_name = "AudioInject-HIFI",
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+ .codec_dai_name = "cs42448",
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+ .ops = &audioinjector_octo_ops,
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+ .init = audioinjector_octo_dai_init,
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+ .symmetric_rates = 1,
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+ .symmetric_channels = 1,
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+ },
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+};
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+
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+static const struct snd_soc_dapm_widget audioinjector_octo_widgets[] = {
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+ SND_SOC_DAPM_OUTPUT("OUTPUTS0"),
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+ SND_SOC_DAPM_OUTPUT("OUTPUTS1"),
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+ SND_SOC_DAPM_OUTPUT("OUTPUTS2"),
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+ SND_SOC_DAPM_OUTPUT("OUTPUTS3"),
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+ SND_SOC_DAPM_INPUT("INPUTS0"),
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+ SND_SOC_DAPM_INPUT("INPUTS1"),
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+ SND_SOC_DAPM_INPUT("INPUTS2"),
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+};
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+
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+static const struct snd_soc_dapm_route audioinjector_octo_route[] = {
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+ /* Balanced outputs */
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+ {"OUTPUTS0", NULL, "AOUT1L"},
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+ {"OUTPUTS0", NULL, "AOUT1R"},
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+ {"OUTPUTS1", NULL, "AOUT2L"},
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+ {"OUTPUTS1", NULL, "AOUT2R"},
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+ {"OUTPUTS2", NULL, "AOUT3L"},
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+ {"OUTPUTS2", NULL, "AOUT3R"},
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+ {"OUTPUTS3", NULL, "AOUT4L"},
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+ {"OUTPUTS3", NULL, "AOUT4R"},
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+
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+ /* Balanced inputs */
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+ {"AIN1L", NULL, "INPUTS0"},
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+ {"AIN1R", NULL, "INPUTS0"},
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+ {"AIN2L", NULL, "INPUTS1"},
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+ {"AIN2R", NULL, "INPUTS1"},
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+ {"AIN3L", NULL, "INPUTS2"},
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+ {"AIN3R", NULL, "INPUTS2"},
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+};
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+
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+static struct snd_soc_card snd_soc_audioinjector_octo = {
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+ .name = "audioinjector-octo-soundcard",
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+ .dai_link = audioinjector_octo_dai,
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+ .num_links = ARRAY_SIZE(audioinjector_octo_dai),
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+
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+ .dapm_widgets = audioinjector_octo_widgets,
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+ .num_dapm_widgets = ARRAY_SIZE(audioinjector_octo_widgets),
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+ .dapm_routes = audioinjector_octo_route,
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+ .num_dapm_routes = ARRAY_SIZE(audioinjector_octo_route),
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+};
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+
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+static int audioinjector_octo_probe(struct platform_device *pdev)
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+{
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+ struct snd_soc_card *card = &snd_soc_audioinjector_octo;
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+ int ret;
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+
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+ card->dev = &pdev->dev;
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+
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+ if (pdev->dev.of_node) {
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+ struct snd_soc_dai_link *dai = &audioinjector_octo_dai[0];
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+ struct device_node *i2s_node =
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+ of_parse_phandle(pdev->dev.of_node,
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+ "i2s-controller", 0);
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+ struct device_node *codec_node =
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+ of_parse_phandle(pdev->dev.of_node,
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+ "codec", 0);
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+
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+ mult_gpios = devm_gpiod_get_array_optional(&pdev->dev, "mult",
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+ GPIOD_OUT_LOW);
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+ if (IS_ERR(mult_gpios))
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+ return PTR_ERR(mult_gpios);
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+
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+ codec_rst_gpio = devm_gpiod_get_optional(&pdev->dev, "reset",
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+ GPIOD_OUT_LOW);
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+ if (IS_ERR(codec_rst_gpio))
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+ return PTR_ERR(codec_rst_gpio);
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+
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+ non_stop_clocks = of_property_read_bool(pdev->dev.of_node, "non-stop-clocks");
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+
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+ if (codec_rst_gpio)
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+ gpiod_set_value(codec_rst_gpio, 1);
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+ msleep(500);
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+ if (codec_rst_gpio)
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+ gpiod_set_value(codec_rst_gpio, 0);
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+ msleep(500);
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+ if (codec_rst_gpio)
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+ gpiod_set_value(codec_rst_gpio, 1);
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+ msleep(500);
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+
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+ if (i2s_node && codec_node) {
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+ dai->cpu_dai_name = NULL;
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+ dai->cpu_of_node = i2s_node;
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+ dai->platform_name = NULL;
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+ dai->platform_of_node = i2s_node;
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+ dai->codec_name = NULL;
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+ dai->codec_of_node = codec_node;
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+ } else
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+ if (!dai->cpu_of_node) {
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+ dev_err(&pdev->dev,
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+ "i2s-controller missing or invalid in DT\n");
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+ return -EINVAL;
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+ } else {
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+ dev_err(&pdev->dev,
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+ "Property 'codec' missing or invalid\n");
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+ return -EINVAL;
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+ }
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+ }
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+
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+ ret = devm_snd_soc_register_card(&pdev->dev, card);
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+ if (ret != 0)
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+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
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+ return ret;
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+}
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+
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+static const struct of_device_id audioinjector_octo_of_match[] = {
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+ { .compatible = "ai,audioinjector-octo-soundcard", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, audioinjector_octo_of_match);
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+
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+static struct platform_driver audioinjector_octo_driver = {
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+ .driver = {
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+ .name = "audioinjector-octo",
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+ .owner = THIS_MODULE,
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+ .of_match_table = audioinjector_octo_of_match,
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+ },
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+ .probe = audioinjector_octo_probe,
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+};
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+
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+module_platform_driver(audioinjector_octo_driver);
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+MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
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+MODULE_DESCRIPTION("AudioInjector.net octo Soundcard");
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+MODULE_LICENSE("GPL v2");
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+MODULE_ALIAS("platform:audioinjector-octo-soundcard");
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