diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0082-Driver-support-for-Google-voiceHAT-soundcard.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0082-Driver-support-for-Google-voiceHAT-soundcard.patch | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0082-Driver-support-for-Google-voiceHAT-soundcard.patch b/target/linux/bcm27xx/patches-4.19/950-0082-Driver-support-for-Google-voiceHAT-soundcard.patch deleted file mode 100644 index a9605818c9..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0082-Driver-support-for-Google-voiceHAT-soundcard.patch +++ /dev/null @@ -1,254 +0,0 @@ -From ae0077658c007643020b88e233150cf1eca6cea8 Mon Sep 17 00:00:00 2001 -From: Peter Malkin <petermalkin@google.com> -Date: Mon, 27 Mar 2017 16:38:21 -0700 -Subject: [PATCH] Driver support for Google voiceHAT soundcard. - -ASoC: googlevoicehat-codec: Use correct device when grabbing GPIO - -The fixup for the VoiceHAT in 4.18 incorrectly tried to find the -sdmode GPIO pin under the card device, not the codec device. -This failed, and therefore caused the device probe to fail. - -Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> - -ASoC: googlevoicehat-codec: Reformat for kernel coding standards - -Fix all whitespace, indentation, and bracing errors. - -Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> - -ASoC: googlevoicehat-codec: Make driver function structure const - -Make voicehat_component_driver a const structure. - -Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> - -ASoC: googlevoicehat-codec: Only convert from ms to jiffies once - -Minor optimisation and allows to become checkpatch clean. -A msec value is read out of DT or from a define, and convert once to -jiffies, rather than every time that it is used. - -Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> ---- - sound/soc/bcm/googlevoicehat-codec.c | 214 +++++++++++++++++++++++++++ - 1 file changed, 214 insertions(+) - create mode 100644 sound/soc/bcm/googlevoicehat-codec.c - ---- /dev/null -+++ b/sound/soc/bcm/googlevoicehat-codec.c -@@ -0,0 +1,214 @@ -+/* -+ * 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 */ -+/* Delay in enabling SDMODE after clock settles to remove pop */ -+#define SDMODE_DELAY_MS 5 -+ -+struct voicehat_priv { -+ struct delayed_work enable_sdmode_work; -+ struct gpio_desc *sdmode_gpio; -+ unsigned long sdmode_delay_jiffies; -+}; -+ -+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_component_probe(struct snd_soc_component *component) -+{ -+ struct voicehat_priv *voicehat = -+ snd_soc_component_get_drvdata(component); -+ -+ voicehat->sdmode_gpio = devm_gpiod_get(component->dev, "sdmode", -+ GPIOD_OUT_LOW); -+ if (IS_ERR(voicehat->sdmode_gpio)) { -+ dev_err(component->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 void voicehat_component_remove(struct snd_soc_component *component) -+{ -+ struct voicehat_priv *voicehat = -+ snd_soc_component_get_drvdata(component); -+ -+ cancel_delayed_work_sync(&voicehat->enable_sdmode_work); -+} -+ -+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 const struct snd_soc_component_driver voicehat_component_driver = { -+ .probe = voicehat_component_probe, -+ .remove = voicehat_component_remove, -+ .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), -+}; -+ -+static int voicehat_daiops_trigger(struct snd_pcm_substream *substream, int cmd, -+ struct snd_soc_dai *dai) -+{ -+ struct snd_soc_component *component = dai->component; -+ struct voicehat_priv *voicehat = -+ snd_soc_component_get_drvdata(component); -+ -+ if (voicehat->sdmode_delay_jiffies == 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, -+ voicehat->sdmode_delay_jiffies); -+ } -+ 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; -+ unsigned int sdmode_delay; -+ 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", -+ &sdmode_delay); -+ -+ if (ret) { -+ 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", -+ sdmode_delay); -+ } -+ voicehat->sdmode_delay_jiffies = msecs_to_jiffies(sdmode_delay); -+ -+ dev_set_drvdata(&pdev->dev, voicehat); -+ -+ return snd_soc_register_component(&pdev->dev, -+ &voicehat_component_driver, -+ &voicehat_dai, -+ 1); -+} -+ -+static int voicehat_platform_remove(struct platform_device *pdev) -+{ -+ snd_soc_unregister_component(&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"); |