diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0087-Driver-support-for-Google-voiceHAT-soundcard.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0087-Driver-support-for-Google-voiceHAT-soundcard.patch | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0087-Driver-support-for-Google-voiceHAT-soundcard.patch b/target/linux/brcm2708/patches-4.14/950-0087-Driver-support-for-Google-voiceHAT-soundcard.patch new file mode 100644 index 0000000000..ac02aca893 --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0087-Driver-support-for-Google-voiceHAT-soundcard.patch @@ -0,0 +1,383 @@ +From 5f1aa4352ca253ca76ee49c51292994d517d7e4e Mon Sep 17 00:00:00 2001 +From: Peter Malkin <petermalkin@google.com> +Date: Mon, 27 Mar 2017 16:38:21 -0700 +Subject: [PATCH 087/454] Driver support for Google voiceHAT soundcard. + +--- + sound/soc/bcm/Kconfig | 7 + + sound/soc/bcm/Makefile | 6 + + sound/soc/bcm/googlevoicehat-codec.c | 199 +++++++++++++++++++++++ + sound/soc/bcm/googlevoicehat-soundcard.c | 124 ++++++++++++++ + 4 files changed, 336 insertions(+) + create mode 100644 sound/soc/bcm/googlevoicehat-codec.c + create mode 100644 sound/soc/bcm/googlevoicehat-soundcard.c + +--- a/sound/soc/bcm/Kconfig ++++ b/sound/soc/bcm/Kconfig +@@ -18,6 +18,13 @@ config SND_SOC_CYGNUS + + If you don't know what to do here, say N. + ++config SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD ++ tristate "Support for Google voiceHAT soundcard" ++ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S ++ select SND_SOC_VOICEHAT ++ help ++ Say Y or M if you want to add support for voiceHAT soundcard. ++ + config SND_BCM2708_SOC_HIFIBERRY_DAC + tristate "Support for HifiBerry DAC" + depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S +--- a/sound/soc/bcm/Makefile ++++ b/sound/soc/bcm/Makefile +@@ -8,8 +8,12 @@ snd-soc-cygnus-objs := cygnus-pcm.o cygn + + obj-$(CONFIG_SND_SOC_CYGNUS) += snd-soc-cygnus.o + ++# Google voiceHAT custom codec support ++snd-soc-googlevoicehat-codec-objs := googlevoicehat-codec.o ++ + # BCM2708 Machine Support + snd-soc-adau1977-adc-objs := adau1977-adc.o ++snd-soc-googlevoicehat-soundcard-objs := googlevoicehat-soundcard.o + snd-soc-hifiberry-amp-objs := hifiberry_amp.o + snd-soc-hifiberry-dac-objs := hifiberry_dac.o + snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o +@@ -34,6 +38,8 @@ snd-soc-pisound-objs := pisound.o + snd-soc-fe-pi-audio-objs := fe-pi-audio.o + + obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o ++obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD) += snd-soc-googlevoicehat-soundcard.o ++obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD) += snd-soc-googlevoicehat-codec.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o +--- /dev/null ++++ b/sound/soc/bcm/googlevoicehat-codec.c +@@ -0,0 +1,199 @@ ++/* ++ * Driver for the Google voiceHAT audio codec for Raspberry Pi. ++ * ++ * Author: Peter Malkin <petermalkin@google.com> ++ * Copyright 2016 ++ * ++ * 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/device.h> ++#include <linux/err.h> ++#include <linux/gpio.h> ++#include <linux/gpio/consumer.h> ++#include <linux/init.h> ++#include <linux/kernel.h> ++#include <linux/mod_devicetable.h> ++#include <linux/module.h> ++#include <linux/of.h> ++#include <linux/platform_device.h> ++#include <linux/version.h> ++#include <sound/pcm.h> ++#include <sound/soc.h> ++#include <sound/soc-dai.h> ++#include <sound/soc-dapm.h> ++ ++#define ICS43432_RATE_MIN_HZ 7190 /* from data sheet */ ++#define ICS43432_RATE_MAX_HZ 52800 /* from data sheet */ ++#define SDMODE_DELAY_MS \ ++ 5 /* Delay in enabling SDMODE after clock settles to remove pop */ ++ ++struct voicehat_priv { ++ struct delayed_work enable_sdmode_work; ++ struct gpio_desc *sdmode_gpio; ++ unsigned int sdmode_delay; ++}; ++ ++static void voicehat_enable_sdmode_work(struct work_struct *work) { ++ struct voicehat_priv *voicehat = ++ container_of(work, struct voicehat_priv, enable_sdmode_work.work); ++ gpiod_set_value(voicehat->sdmode_gpio, 1); ++} ++ ++static int voicehat_codec_probe(struct snd_soc_codec *codec) { ++ struct voicehat_priv *voicehat = snd_soc_codec_get_drvdata(codec); ++ ++ voicehat->sdmode_gpio = devm_gpiod_get(codec->dev, "sdmode", GPIOD_OUT_LOW); ++ if (IS_ERR(voicehat->sdmode_gpio)) { ++ dev_err(codec->dev, "Unable to allocate GPIO pin\n"); ++ return PTR_ERR(voicehat->sdmode_gpio); ++ } ++ ++ INIT_DELAYED_WORK(&voicehat->enable_sdmode_work, voicehat_enable_sdmode_work); ++ return 0; ++} ++ ++static int voicehat_codec_remove(struct snd_soc_codec *codec) { ++ struct voicehat_priv *voicehat = snd_soc_codec_get_drvdata(codec); ++ ++ cancel_delayed_work_sync(&voicehat->enable_sdmode_work); ++ ++ return 0; ++} ++ ++static const struct snd_soc_dapm_widget voicehat_dapm_widgets[] = { ++ SND_SOC_DAPM_OUTPUT("Speaker"), ++}; ++ ++static const struct snd_soc_dapm_route voicehat_dapm_routes[] = { ++ {"Speaker", NULL, "HiFi Playback"}, ++}; ++ ++static struct snd_soc_codec_driver voicehat_codec_driver = { ++ .probe = voicehat_codec_probe, ++ .remove = voicehat_codec_remove, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0) ++ .component_driver = { ++#endif ++ .dapm_widgets = voicehat_dapm_widgets, ++ .num_dapm_widgets = ARRAY_SIZE(voicehat_dapm_widgets), ++ .dapm_routes = voicehat_dapm_routes, ++ .num_dapm_routes = ARRAY_SIZE(voicehat_dapm_routes), ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0) ++ }, ++#endif ++}; ++ ++static int voicehat_daiops_trigger(struct snd_pcm_substream *substream, int cmd, ++ struct snd_soc_dai *dai) { ++ struct snd_soc_codec *codec = dai->codec; ++ struct voicehat_priv *voicehat = snd_soc_codec_get_drvdata(codec); ++ ++ if (voicehat->sdmode_delay == 0) return 0; ++ ++ dev_dbg(dai->dev, "CMD %d", cmd); ++ dev_dbg(dai->dev, "Playback Active %d", dai->playback_active); ++ dev_dbg(dai->dev, "Capture Active %d", dai->capture_active); ++ ++ switch (cmd) { ++ case SNDRV_PCM_TRIGGER_START: ++ case SNDRV_PCM_TRIGGER_RESUME: ++ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: ++ if (dai->playback_active) { ++ dev_info(dai->dev, "Enabling audio amp...\n"); ++ queue_delayed_work(system_power_efficient_wq, ++ &voicehat->enable_sdmode_work, ++ msecs_to_jiffies(voicehat->sdmode_delay)); ++ } ++ break; ++ case SNDRV_PCM_TRIGGER_STOP: ++ case SNDRV_PCM_TRIGGER_SUSPEND: ++ case SNDRV_PCM_TRIGGER_PAUSE_PUSH: ++ if (dai->playback_active) { ++ cancel_delayed_work(&voicehat->enable_sdmode_work); ++ dev_info(dai->dev, "Disabling audio amp...\n"); ++ gpiod_set_value(voicehat->sdmode_gpio, 0); ++ } ++ break; ++ } ++ return 0; ++} ++ ++static const struct snd_soc_dai_ops voicehat_dai_ops = { ++ .trigger = voicehat_daiops_trigger, ++}; ++ ++static struct snd_soc_dai_driver voicehat_dai = { ++ .name = "voicehat-hifi", ++ .capture = {.stream_name = "HiFi Capture", ++ .channels_min = 2, ++ .channels_max = 2, ++ .rates = SNDRV_PCM_RATE_48000, ++ .formats = SNDRV_PCM_FMTBIT_S32_LE}, ++ .playback = {.stream_name = "HiFi Playback", ++ .channels_min = 2, ++ .channels_max = 2, ++ .rates = SNDRV_PCM_RATE_48000, ++ .formats = SNDRV_PCM_FMTBIT_S32_LE}, ++ .ops = &voicehat_dai_ops, ++ .symmetric_rates = 1}; ++ ++#ifdef CONFIG_OF ++static const struct of_device_id voicehat_ids[] = { ++ { ++ .compatible = "google,voicehat", ++ }, ++ {}}; ++MODULE_DEVICE_TABLE(of, voicehat_ids); ++#endif ++ ++static int voicehat_platform_probe(struct platform_device *pdev) { ++ struct voicehat_priv *voicehat; ++ int ret; ++ ++ voicehat = devm_kzalloc(&pdev->dev, sizeof(*voicehat), GFP_KERNEL); ++ if (!voicehat) return -ENOMEM; ++ ++ ret = device_property_read_u32(&pdev->dev, "voicehat_sdmode_delay", ++ &voicehat->sdmode_delay); ++ ++ if (ret) { ++ voicehat->sdmode_delay = SDMODE_DELAY_MS; ++ dev_info(&pdev->dev, ++ "property 'voicehat_sdmode_delay' not found default 5 mS"); ++ } else { ++ dev_info(&pdev->dev, "property 'voicehat_sdmode_delay' found delay= %d mS", ++ voicehat->sdmode_delay); ++ } ++ ++ dev_set_drvdata(&pdev->dev, voicehat); ++ ++ return snd_soc_register_codec(&pdev->dev, &voicehat_codec_driver, &voicehat_dai, 1); ++} ++ ++static int voicehat_platform_remove(struct platform_device *pdev) { ++ snd_soc_unregister_codec(&pdev->dev); ++ return 0; ++} ++ ++static struct platform_driver voicehat_driver = { ++ .driver = ++ { ++ .name = "voicehat-codec", .of_match_table = of_match_ptr(voicehat_ids), ++ }, ++ .probe = voicehat_platform_probe, ++ .remove = voicehat_platform_remove, ++}; ++ ++module_platform_driver(voicehat_driver); ++ ++MODULE_DESCRIPTION("Google voiceHAT Codec driver"); ++MODULE_AUTHOR("Peter Malkin <petermalkin@google.com>"); ++MODULE_LICENSE("GPL v2"); +--- /dev/null ++++ b/sound/soc/bcm/googlevoicehat-soundcard.c +@@ -0,0 +1,124 @@ ++/* ++ * ASoC Driver for Google voiceHAT SoundCard ++ * ++ * Author: Peter Malkin <petermalkin@google.com> ++ * Copyright 2016 ++ * ++ * 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 <sound/core.h> ++#include <sound/pcm.h> ++#include <sound/pcm_params.h> ++#include <sound/soc.h> ++#include <sound/jack.h> ++ ++static int snd_rpi_googlevoicehat_soundcard_init(struct snd_soc_pcm_runtime *rtd) ++{ ++ return 0; ++} ++ ++static int snd_rpi_googlevoicehat_soundcard_hw_params( ++ struct snd_pcm_substream *substream, ++ struct snd_pcm_hw_params *params) ++{ ++ struct snd_soc_pcm_runtime *rtd = substream->private_data; ++ struct snd_soc_dai *cpu_dai = rtd->cpu_dai; ++ ++ unsigned int sample_bits = ++ snd_pcm_format_physical_width(params_format(params)); ++ ++ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2); ++} ++ ++/* machine stream operations */ ++static struct snd_soc_ops snd_rpi_googlevoicehat_soundcard_ops = { ++ .hw_params = snd_rpi_googlevoicehat_soundcard_hw_params, ++}; ++ ++static struct snd_soc_dai_link snd_rpi_googlevoicehat_soundcard_dai[] = { ++{ ++ .name = "Google voiceHAT SoundCard", ++ .stream_name = "Google voiceHAT SoundCard HiFi", ++ .cpu_dai_name = "bcm2708-i2s.0", ++ .codec_dai_name = "voicehat-hifi", ++ .platform_name = "bcm2708-i2s.0", ++ .codec_name = "voicehat-codec", ++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | ++ SND_SOC_DAIFMT_CBS_CFS, ++ .ops = &snd_rpi_googlevoicehat_soundcard_ops, ++ .init = snd_rpi_googlevoicehat_soundcard_init, ++}, ++}; ++ ++/* audio machine driver */ ++static struct snd_soc_card snd_rpi_googlevoicehat_soundcard = { ++ .name = "snd_rpi_googlevoicehat_soundcard", ++ .owner = THIS_MODULE, ++ .dai_link = snd_rpi_googlevoicehat_soundcard_dai, ++ .num_links = ARRAY_SIZE(snd_rpi_googlevoicehat_soundcard_dai), ++}; ++ ++static int snd_rpi_googlevoicehat_soundcard_probe(struct platform_device *pdev) ++{ ++ int ret = 0; ++ ++ snd_rpi_googlevoicehat_soundcard.dev = &pdev->dev; ++ ++ if (pdev->dev.of_node) { ++ struct device_node *i2s_node; ++ struct snd_soc_dai_link *dai = &snd_rpi_googlevoicehat_soundcard_dai[0]; ++ i2s_node = of_parse_phandle(pdev->dev.of_node, ++ "i2s-controller", 0); ++ ++ if (i2s_node) { ++ dai->cpu_dai_name = NULL; ++ dai->cpu_of_node = i2s_node; ++ dai->platform_name = NULL; ++ dai->platform_of_node = i2s_node; ++ } ++ } ++ ++ ret = snd_soc_register_card(&snd_rpi_googlevoicehat_soundcard); ++ if (ret) ++ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret); ++ ++ return ret; ++} ++ ++static int snd_rpi_googlevoicehat_soundcard_remove(struct platform_device *pdev) ++{ ++ return snd_soc_unregister_card(&snd_rpi_googlevoicehat_soundcard); ++} ++ ++static const struct of_device_id snd_rpi_googlevoicehat_soundcard_of_match[] = { ++ { .compatible = "googlevoicehat,googlevoicehat-soundcard", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, snd_rpi_googlevoicehat_soundcard_of_match); ++ ++static struct platform_driver snd_rpi_googlevoicehat_soundcard_driver = { ++ .driver = { ++ .name = "snd-googlevoicehat-soundcard", ++ .owner = THIS_MODULE, ++ .of_match_table = snd_rpi_googlevoicehat_soundcard_of_match, ++ }, ++ .probe = snd_rpi_googlevoicehat_soundcard_probe, ++ .remove = snd_rpi_googlevoicehat_soundcard_remove, ++}; ++ ++module_platform_driver(snd_rpi_googlevoicehat_soundcard_driver); ++ ++MODULE_AUTHOR("Peter Malkin <petermalkin@google.com>"); ++MODULE_DESCRIPTION("ASoC Driver for Google voiceHAT SoundCard"); ++MODULE_LICENSE("GPL v2"); |