ASoC: amd: acp: Add legacy sound card support for Chrome audio

Renoir based Chrome board has RT5682 as primary headset codec and
RT1019 amp device connected to I2SSP ACP i2s controller. Add driver
to register legacy sound card devices on Chrome board.

Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Link: https://lore.kernel.org/r/20211019070938.5076-6-AjitKumar.Pandey@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/acp/Kconfig

@@ -35,3 +35,9 @@ config SND_SOC_AMD_MACH_COMMON
 	depends on X86 && PCI && I2C
 	help
 	  This option enables common Machine driver module for ACP.
+
+config SND_SOC_AMD_LEGACY_MACH
+	tristate "AMD Legacy Machine Driver Support"
+	select SND_SOC_AMD_MACH_COMMON
+	help
+	  This option enables legacy sound card support for ACP audio.

sound/soc/amd/acp/Makefile

@@ -13,10 +13,12 @@ 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
 
 obj-$(CONFIG_SND_SOC_AMD_ACP_PCM) += snd-acp-pcm.o
 obj-$(CONFIG_SND_SOC_AMD_ACP_I2S) += snd-acp-i2s.o
 
 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

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

@@ -0,0 +1,104 @@
+// 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>
+//
+
+/*
+ * Machine Driver Legacy 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 rt5682_rt1019_data = {
+	.hs_cpu_id = I2S_SP,
+	.amp_cpu_id = I2S_SP,
+	.dmic_cpu_id = NONE,
+	.hs_codec_id = RT5682,
+	.amp_codec_id = RT1019,
+	.dmic_codec_id = NONE,
+};
+
+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_asoc_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_legacy_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 = "rn_rt5682_rt1019",
+		.driver_data = (kernel_ulong_t)&rt5682_rt1019_data,
+	},
+	{ }
+};
+static struct platform_driver acp_asoc_audio = {
+	.driver = {
+		.name = "acp_mach",
+	},
+	.probe = acp_asoc_probe,
+	.id_table = board_ids,
+};
+
+module_platform_driver(acp_asoc_audio);
+
+MODULE_IMPORT_NS(SND_SOC_AMD_MACH);
+MODULE_DESCRIPTION("ACP chrome audio support");
+MODULE_ALIAS("platform:rn_rt5682_rt1019");
+MODULE_LICENSE("GPL v2");