Support AVS-DMIC configuration by implementing board connecting AVS
platform component with DMIC codec one.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>
Signed-off-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
---
sound/soc/intel/avs/boards/Kconfig | 8 +++
sound/soc/intel/avs/boards/Makefile | 2 +
sound/soc/intel/avs/boards/dmic.c | 93 +++++++++++++++++++++++++++++
3 files changed, 103 insertions(+)
create mode 100644 sound/soc/intel/avs/boards/dmic.c
diff --git a/sound/soc/intel/avs/boards/Kconfig b/sound/soc/intel/avs/boards/Kconfig
index de62c0437f6e..1d4597fa9814 100644
--- a/sound/soc/intel/avs/boards/Kconfig
+++ b/sound/soc/intel/avs/boards/Kconfig
@@ -4,6 +4,14 @@ menu "Intel AVS Machine drivers"
comment "Available DSP configurations"
+config SND_SOC_INTEL_AVS_MACH_DMIC
+ tristate "DMIC generic board"
+ select SND_SOC_DMIC
+ help
+ This adds support for AVS with Digital Mic array configuration.
+ Say Y or m if you have such a device. This is a recommended option.
+ If unsure select "N".
+
config SND_SOC_INTEL_AVS_MACH_HDAUDIO
tristate "HD-Audio generic board"
select SND_SOC_HDA
diff --git a/sound/soc/intel/avs/boards/Makefile b/sound/soc/intel/avs/boards/Makefile
index e5281148e5d4..2ff35d4d97d8 100644
--- a/sound/soc/intel/avs/boards/Makefile
+++ b/sound/soc/intel/avs/boards/Makefile
@@ -1,5 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
+snd-soc-avs-dmic-objs := dmic.o
snd-soc-avs-hdaudio-objs := hdaudio.o
+obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_DMIC) += snd-soc-avs-dmic.o
obj-$(CONFIG_SND_SOC_INTEL_AVS_MACH_HDAUDIO) += snd-soc-avs-hdaudio.o
diff --git a/sound/soc/intel/avs/boards/dmic.c b/sound/soc/intel/avs/boards/dmic.c
new file mode 100644
index 000000000000..90a921638572
--- /dev/null
+++ b/sound/soc/intel/avs/boards/dmic.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
+//
+// Authors: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
+// Amadeusz Slawinski <amadeuszx.slawinski@xxxxxxxxxxxxxxx>
+//
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+
+SND_SOC_DAILINK_DEF(dmic_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC Pin")));
+SND_SOC_DAILINK_DEF(dmic_wov_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC WoV Pin")));
+SND_SOC_DAILINK_DEF(dmic_codec, DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec", "dmic-hifi")));
+/* Name overridden on probe */
+SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("")));
+
+static struct snd_soc_dai_link card_dai_links[] = {
+ /* Back ends */
+ {
+ .name = "DMIC",
+ .id = 0,
+ .dpcm_capture = 1,
+ .nonatomic = 1,
+ .no_pcm = 1,
+ SND_SOC_DAILINK_REG(dmic_pin, dmic_codec, platform),
+ },
+ {
+ .name = "DMIC WoV",
+ .id = 1,
+ .dpcm_capture = 1,
+ .nonatomic = 1,
+ .no_pcm = 1,
+ .ignore_suspend = 1,
+ SND_SOC_DAILINK_REG(dmic_wov_pin, dmic_codec, platform),
+ },
+};
+
+static const struct snd_soc_dapm_widget card_widgets[] = {
+ SND_SOC_DAPM_MIC("SoC DMIC", NULL),
+};
+
+static const struct snd_soc_dapm_route card_routes[] = {
+ {"DMic", NULL, "SoC DMIC"},
+ {"DMIC Rx", NULL, "Capture"},
+ {"DMIC WoV Rx", NULL, "Capture"},
+};
+
+static int avs_dmic_probe(struct platform_device *pdev)
+{
+ struct snd_soc_acpi_mach *mach;
+ struct snd_soc_card *card;
+ struct device *dev = &pdev->dev;
+ int ret;
+
+ mach = dev_get_platdata(dev);
+
+ card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+ if (!card)
+ return -ENOMEM;
+
+ card->name = "avs_dmic";
+ card->dev = dev;
+ card->owner = THIS_MODULE;
+ card->dai_link = card_dai_links;
+ card->num_links = ARRAY_SIZE(card_dai_links);
+ card->dapm_widgets = card_widgets;
+ card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
+ card->dapm_routes = card_routes;
+ card->num_dapm_routes = ARRAY_SIZE(card_routes);
+ card->fully_routed = true;
+
+ ret = snd_soc_fixup_dai_links_platform_name(card, mach->mach_params.platform);
+ if (ret)
+ return ret;
+
+ return devm_snd_soc_register_card(dev, card);
+}
+
+static struct platform_driver avs_dmic_driver = {
+ .probe = avs_dmic_probe,
+ .driver = {
+ .name = "avs_dmic",
+ .pm = &snd_soc_pm_ops,
+ },
+};
+
+module_platform_driver(avs_dmic_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:avs_dmic");
--
2.25.1
