diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0260-ASoC-Add-support-for-AudioSense-Pi-add-on-soundcard.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0260-ASoC-Add-support-for-AudioSense-Pi-add-on-soundcard.patch | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0260-ASoC-Add-support-for-AudioSense-Pi-add-on-soundcard.patch b/target/linux/bcm27xx/patches-4.19/950-0260-ASoC-Add-support-for-AudioSense-Pi-add-on-soundcard.patch new file mode 100644 index 0000000000..1ab87d5a54 --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0260-ASoC-Add-support-for-AudioSense-Pi-add-on-soundcard.patch @@ -0,0 +1,320 @@ +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"); ++ |