From 5705594ae56861cb63e7a3de1854e29ad1e830fd Mon Sep 17 00:00:00 2001 From: b-ak 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 --- 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 + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#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 "); +MODULE_DESCRIPTION("ASoC Driver for TLV320AIC3204 Audio"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:audiosense-pi"); +