--- /dev/null
+From 5705594ae56861cb63e7a3de1854e29ad1e830fd Mon Sep 17 00:00:00 2001
+From: b-ak <anur.bhargav@gmail.com>
+Date: Thu, 3 Jan 2019 00:01:08 +0530
+Subject: [PATCH] ASoC: Add support for AudioSense-Pi add-on soundcard
+
+AudioSense-Pi is a RPi HAT based on a TI's TLV320AIC32x4 stereo codec
+
+This hardware provides multiple audio I/O capabilities to the RPi.
+The codec connects to the RPi's SoC through the I2S Bus.
+
+The following devices can be connected through a 3.5mm jack
+ 1. Line-In: Plain old audio in from mobile phones, PCs, etc.,
+ 2. Mic-In: Connect a microphone
+ 3. Line-Out: Connect the output to a speaker
+ 4. Headphones: Connect a Headphone w or w/o microphones
+
+Multiple Inputs:
+ It supports the following combinations
+ 1. Two stereo Line-Inputs and a microphone
+ 2. One stereo Line-Input and two microphones
+ 3. Two stereo Line-Inputs, a microphone and
+ one mono line-input (with h/w hack)
+ 4. One stereo Line-Input, two microphones and
+ one mono line-input (with h/w hack)
+
+Multiple Outputs:
+ Audio output can be routed to the headphones or
+ speakers (with additional hardware)
+
+Signed-off-by: b-ak <anur.bhargav@gmail.com>
+---
+ sound/soc/bcm/Kconfig | 7 +
+ sound/soc/bcm/Makefile | 2 +
+ sound/soc/bcm/audiosense-pi.c | 246 ++++++++++++++++++++++++++++++++++
+ 3 files changed, 255 insertions(+)
+ create mode 100644 sound/soc/bcm/audiosense-pi.c
+
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -137,6 +137,13 @@ config SND_AUDIOINJECTOR_OCTO_SOUNDCARD
+ help
+ Say Y or M if you want to add support for audioinjector.net octo add on
+
++config SND_AUDIOSENSE_PI
++ tristate "Support for AudioSense Add-On Soundcard"
++ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++ select SND_SOC_TLV320AIC32X4_I2C
++ help
++ Say Y or M if you want to add support for tlv320aic32x4 add-on
++
+ config SND_DIGIDAC1_SOUNDCARD
+ tristate "Support for Red Rocks Audio DigiDAC1"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -20,6 +20,7 @@ snd-soc-rpi-proto-objs := rpi-proto.o
+ snd-soc-iqaudio-dac-objs := iqaudio-dac.o
+ snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
+ snd-soc-audioinjector-octo-soundcard-objs := audioinjector-octo-soundcard.o
++snd-soc-audiosense-pi-objs := audiosense-pi.o
+ snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
+ snd-soc-dionaudio-loco-objs := dionaudio_loco.o
+ snd-soc-dionaudio-loco-v2-objs := dionaudio_loco-v2.o
+@@ -41,6 +42,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO)
+ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
+ obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
+ obj-$(CONFIG_SND_AUDIOINJECTOR_OCTO_SOUNDCARD) += snd-soc-audioinjector-octo-soundcard.o
++obj-$(CONFIG_SND_AUDIOSENSE_PI) += snd-soc-audiosense-pi.o
+ obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
+ obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
+ obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2) += snd-soc-dionaudio-loco-v2.o
+--- /dev/null
++++ b/sound/soc/bcm/audiosense-pi.c
+@@ -0,0 +1,246 @@
++/*
++ * ASoC Driver for AudioSense add on soundcard
++ * Author:
++ * Bhargav A K <anur.bhargav@gmail.com>
++ * Copyright 2017
++ *
++ * 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/clk.h>
++#include <linux/i2c.h>
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++#include <sound/control.h>
++
++#include <sound/tlv320aic32x4.h>
++#include "../codecs/tlv320aic32x4.h"
++
++#define AIC32X4_SYSCLK_XTAL 0x00
++
++/*
++ * Setup Codec Sample Rates and Channels
++ * Supported Rates:
++ * 8000, 11025, 16000, 22050, 32000, 44100, 48000, 64000, 88200, 96000,
++ */
++static const unsigned int audiosense_pi_rate[] = {
++ 48000,
++};
++
++static struct snd_pcm_hw_constraint_list audiosense_constraints_rates = {
++ .list = audiosense_pi_rate,
++ .count = ARRAY_SIZE(audiosense_pi_rate),
++};
++
++static const unsigned int audiosense_pi_channels[] = {
++ 2,
++};
++
++static struct snd_pcm_hw_constraint_list audiosense_constraints_ch = {
++ .count = ARRAY_SIZE(audiosense_pi_channels),
++ .list = audiosense_pi_channels,
++ .mask = 0,
++};
++
++/* Setup DAPM widgets and paths */
++static const struct snd_soc_dapm_widget audiosense_pi_dapm_widgets[] = {
++ SND_SOC_DAPM_HP("Headphone Jack", NULL),
++ SND_SOC_DAPM_LINE("Line Out", NULL),
++ SND_SOC_DAPM_LINE("Line In", NULL),
++ SND_SOC_DAPM_INPUT("CM_L"),
++ SND_SOC_DAPM_INPUT("CM_R"),
++};
++
++static const struct snd_soc_dapm_route audiosense_pi_audio_map[] = {
++ /* Line Inputs are connected to
++ * (IN1_L | IN1_R)
++ * (IN2_L | IN2_R)
++ * (IN3_L | IN3_R)
++ */
++ {"IN1_L", NULL, "Line In"},
++ {"IN1_R", NULL, "Line In"},
++ {"IN2_L", NULL, "Line In"},
++ {"IN2_R", NULL, "Line In"},
++ {"IN3_L", NULL, "Line In"},
++ {"IN3_R", NULL, "Line In"},
++
++ /* Mic is connected to IN2_L and IN2_R */
++ {"Left ADC", NULL, "Mic Bias"},
++ {"Right ADC", NULL, "Mic Bias"},
++
++ /* Headphone connected to HPL, HPR */
++ {"Headphone Jack", NULL, "HPL"},
++ {"Headphone Jack", NULL, "HPR"},
++
++ /* Speakers connected to LOL and LOR */
++ {"Line Out", NULL, "LOL"},
++ {"Line Out", NULL, "LOR"},
++};
++
++static int audiosense_pi_card_init(struct snd_soc_pcm_runtime *rtd)
++{
++ /* TODO: init of the codec specific dapm data, ignore suspend/resume */
++ struct snd_soc_component *component = rtd->codec_dai->component;
++
++ snd_soc_component_update_bits(component, AIC32X4_MICBIAS, 0x78,
++ AIC32X4_MICBIAS_LDOIN |
++ AIC32X4_MICBIAS_2075V);
++ snd_soc_component_update_bits(component, AIC32X4_PWRCFG, 0x08,
++ AIC32X4_AVDDWEAKDISABLE);
++ snd_soc_component_update_bits(component, AIC32X4_LDOCTL, 0x01,
++ AIC32X4_LDOCTLEN);
++
++ return 0;
++}
++
++static int audiosense_pi_card_hw_params(
++ struct snd_pcm_substream *substream,
++ struct snd_pcm_hw_params *params)
++{
++ int ret = 0;
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_dai *codec_dai = rtd->codec_dai;
++
++ /* Set the codec system clock, there is a 12 MHz XTAL on the board */
++ ret = snd_soc_dai_set_sysclk(codec_dai, AIC32X4_SYSCLK_XTAL,
++ 12000000, SND_SOC_CLOCK_IN);
++ if (ret) {
++ dev_err(rtd->card->dev,
++ "could not set codec driver clock params\n");
++ return ret;
++ }
++ return 0;
++}
++
++static int audiosense_pi_card_startup(struct snd_pcm_substream *substream)
++{
++ struct snd_pcm_runtime *runtime = substream->runtime;
++
++ /*
++ * Set codec to 48Khz Sampling, Stereo I/O and 16 bit audio
++ */
++ runtime->hw.channels_max = 2;
++ snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
++ &audiosense_constraints_ch);
++
++ runtime->hw.formats = SNDRV_PCM_FMTBIT_S16_LE;
++ snd_pcm_hw_constraint_msbits(runtime, 0, 16, 16);
++
++
++ snd_pcm_hw_constraint_list(substream->runtime, 0,
++ SNDRV_PCM_HW_PARAM_RATE,
++ &audiosense_constraints_rates);
++ return 0;
++}
++
++static struct snd_soc_ops audiosense_pi_card_ops = {
++ .startup = audiosense_pi_card_startup,
++ .hw_params = audiosense_pi_card_hw_params,
++};
++
++static struct snd_soc_dai_link audiosense_pi_card_dai[] = {
++ {
++ .name = "TLV320AIC3204 Audio",
++ .stream_name = "TLV320AIC3204 Hifi Audio",
++ .cpu_dai_name = "bcm2708-i2s.0",
++ .codec_dai_name = "tlv320aic32x4-hifi",
++ .platform_name = "bcm2708-i2s.0",
++ .codec_name = "tlv320aic32x4.1-0018",
++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++ SND_SOC_DAIFMT_CBM_CFM,
++ .ops = &audiosense_pi_card_ops,
++ .init = audiosense_pi_card_init,
++ },
++};
++
++static struct snd_soc_card audiosense_pi_card = {
++ .name = "audiosense-pi",
++ .driver_name = "audiosense-pi",
++ .dai_link = audiosense_pi_card_dai,
++ .owner = THIS_MODULE,
++ .num_links = ARRAY_SIZE(audiosense_pi_card_dai),
++ .dapm_widgets = audiosense_pi_dapm_widgets,
++ .num_dapm_widgets = ARRAY_SIZE(audiosense_pi_dapm_widgets),
++ .dapm_routes = audiosense_pi_audio_map,
++ .num_dapm_routes = ARRAY_SIZE(audiosense_pi_audio_map),
++};
++
++static int audiosense_pi_card_probe(struct platform_device *pdev)
++{
++ int ret = 0;
++ struct snd_soc_card *card = &audiosense_pi_card;
++ struct snd_soc_dai_link *dai = &audiosense_pi_card_dai[0];
++ struct device_node *i2s_node = pdev->dev.of_node;
++
++ card->dev = &pdev->dev;
++
++ if (!dai) {
++ dev_err(&pdev->dev, "DAI not found. Missing or Invalid\n");
++ return -EINVAL;
++ }
++
++ i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
++ if (!i2s_node) {
++ dev_err(&pdev->dev,
++ "Property 'i2s-controller' 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);
++
++ ret = snd_soc_register_card(card);
++ if (ret && ret != -EPROBE_DEFER)
++ dev_err(&pdev->dev,
++ "snd_soc_register_card() failed: %d\n", ret);
++
++ return ret;
++}
++
++static int audiosense_pi_card_remove(struct platform_device *pdev)
++{
++ struct snd_soc_card *card = platform_get_drvdata(pdev);
++
++ return snd_soc_unregister_card(card);
++
++}
++
++static const struct of_device_id audiosense_pi_card_of_match[] = {
++ { .compatible = "as,audiosense-pi", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, audiosense_pi_card_of_match);
++
++static struct platform_driver audiosense_pi_card_driver = {
++ .driver = {
++ .name = "audiosense-snd-card",
++ .owner = THIS_MODULE,
++ .of_match_table = audiosense_pi_card_of_match,
++ },
++ .probe = audiosense_pi_card_probe,
++ .remove = audiosense_pi_card_remove,
++};
++
++module_platform_driver(audiosense_pi_card_driver);
++
++MODULE_AUTHOR("Bhargav AK <anur.bhargav@gmail.com>");
++MODULE_DESCRIPTION("ASoC Driver for TLV320AIC3204 Audio");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:audiosense-pi");
++
projects / openwrt / openwrt.git / blobdiff