ASoC: amd: acp: Add SOF audio support on Chrome board

Chrome board has RT5682 codec and RT1019 amp connected to I2S SP
controller on ACP hw. Also it support DMIC capture endpoints with
inbuilt pdm controller on ACP hw block. Add driver module to create
backend dai links for sof dsp core. We pass driver data with audio
end points configuration to register sound cards and create device
nodes for all audio endpoints.
Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Link: https://lore.kernel.org/r/20211019070938.5076-7-AjitKumar.Pandey@amd.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/acp/Kconfig

@@ -41,3 +41,9 @@ config SND_SOC_AMD_LEGACY_MACH
 	select SND_SOC_AMD_MACH_COMMON
 	help
 	  This option enables legacy sound card support for ACP audio.
+
+config SND_SOC_AMD_SOF_MACH
+	tristate "AMD SOF Machine Driver Support"
+	select SND_SOC_AMD_MACH_COMMON
+	help
+	  This option enables SOF sound card support for ACP audio.

sound/soc/amd/acp/Makefile

@@ -14,6 +14,7 @@ snd-acp-renoir-objs     := acp-renoir.o
 #machine specific driver
 snd-acp-mach-objs     := acp-mach-common.o
 snd-acp-legacy-mach-objs     := acp-legacy-mach.o
+snd-acp-sof-mach-objs     := acp-sof-mach.o
 
 obj-$(CONFIG_SND_SOC_AMD_ACP_PCM) += snd-acp-pcm.o
 obj-$(CONFIG_SND_SOC_AMD_ACP_I2S) += snd-acp-i2s.o
@@ -22,3 +23,4 @@ obj-$(CONFIG_SND_AMD_ASOC_RENOIR) += snd-acp-renoir.o
 
 obj-$(CONFIG_SND_SOC_AMD_MACH_COMMON) += snd-acp-mach.o
 obj-$(CONFIG_SND_SOC_AMD_LEGACY_MACH) += snd-acp-legacy-mach.o
+obj-$(CONFIG_SND_SOC_AMD_SOF_MACH) += snd-acp-sof-mach.o

sound/soc/amd/acp/acp-sof-mach.c

+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license. When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2021 Advanced Micro Devices, Inc.
+//
+// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
+//
+
+/*
+ * SOF Machine Driver Support for ACP HW block
+ */
+
+#include <sound/core.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-acpi.h>
+#include <sound/soc-dapm.h>
+#include <linux/module.h>
+
+#include "acp-mach.h"
+
+static struct acp_card_drvdata sof_rt5682_rt1019_data = {
+	.hs_cpu_id = I2S_SP,
+	.amp_cpu_id = I2S_SP,
+	.dmic_cpu_id = DMIC,
+	.hs_codec_id = RT5682,
+	.amp_codec_id = RT1019,
+	.dmic_codec_id = DMIC,
+};
+
+static const struct snd_kcontrol_new acp_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("Spk"),
+	SOC_DAPM_PIN_SWITCH("Left Spk"),
+	SOC_DAPM_PIN_SWITCH("Right Spk"),
+};
+
+static const struct snd_soc_dapm_widget acp_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone Jack", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_SPK("Spk", NULL),
+	SND_SOC_DAPM_SPK("Left Spk", NULL),
+	SND_SOC_DAPM_SPK("Right Spk", NULL),
+};
+
+static int acp_sof_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = NULL;
+	struct device *dev = &pdev->dev;
+	int ret;
+
+	if (!pdev->id_entry)
+		return -EINVAL;
+
+	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+	if (!card)
+		return -ENOMEM;
+
+	card->dev = dev;
+	card->owner = THIS_MODULE;
+	card->name = pdev->id_entry->name;
+	card->dapm_widgets = acp_widgets;
+	card->num_dapm_widgets = ARRAY_SIZE(acp_widgets);
+	card->controls = acp_controls;
+	card->num_controls = ARRAY_SIZE(acp_controls);
+	card->drvdata = (struct acp_card_drvdata *)pdev->id_entry->driver_data;
+
+	acp_sofdsp_dai_links_create(card);
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret) {
+		dev_err(&pdev->dev,
+				"devm_snd_soc_register_card(%s) failed: %d\n",
+				card->name, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id board_ids[] = {
+	{
+		.name = "rt5682-rt1019",
+		.driver_data = (kernel_ulong_t)&sof_rt5682_rt1019_data
+	},
+	{ }
+};
+static struct platform_driver acp_asoc_audio = {
+	.driver = {
+		.name = "sof_mach",
+	},
+	.probe = acp_sof_probe,
+	.id_table = board_ids,
+};
+
+module_platform_driver(acp_asoc_audio);
+
+MODULE_IMPORT_NS(SND_SOC_AMD_MACH);
+MODULE_DESCRIPTION("ACP chrome SOF audio support");
+MODULE_ALIAS("platform:rt5682-rt1019");
+MODULE_LICENSE("GPL v2");