+++ /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 / staging / chunkeey.git / blobdiff