ASoC: amd: Add module to determine ACP configuration

ACP hw block configuration differs across various distributions
and hence it's required to register different drivers module for
distributions. For now we support three ACP drivers:

* ACP without SOF use case
* ACP with SOF use case
* ACP with SOF use case for DMIC and non SOF for I2S endpoints

As all above driver registers with common PCI ID for ACP hw block
we need code to determine ACP configuration and auto select driver
module. This patch expose function that return configuration flag
based on dmi checks for a system. ACP driver module probe register
platform device based on such configuration flag to avoid conflict
with other ACP drivers probed for same PCI ID.

Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20211117093734.17407-8-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 81 insertions, 0 deletions

diff --git a/sound/soc/amd/acp-config.c b/sound/soc/amd/acp-config.c
new file mode 100644
index 000000000000..c9abbb46b6f5
--- /dev/null
+++ b/sound/soc/amd/acp-config.c
@@ -0,0 +1,81 @@
+// 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>
+//
+
+/* ACP machine configuration module */
+
+#include <linux/acpi.h>
+#include <linux/bits.h>
+#include <linux/dmi.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "../sof/amd/acp.h"
+#include "mach-config.h"
+
+static int acp_quirk_data;
+
+static const struct config_entry config_table[] = {
+	{
+		.flags = FLAG_AMD_SOF,
+		.device = ACP_PCI_DEV_ID,
+		.dmi_table = (const struct dmi_system_id []) {
+			{
+				.matches = {
+					DMI_MATCH(DMI_SYS_VENDOR, "AMD"),
+					DMI_MATCH(DMI_PRODUCT_NAME, "Majolica-CZN"),
+				},
+			},
+			{}
+		},
+	},
+};
+
+int snd_amd_acp_find_config(struct pci_dev *pci)
+{
+	const struct config_entry *table = config_table;
+	u16 device = pci->device;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(config_table); i++, table++) {
+		if (table->device != device)
+			continue;
+		if (table->dmi_table && !dmi_check_system(table->dmi_table))
+			continue;
+		acp_quirk_data = table->flags;
+		return table->flags;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(snd_amd_acp_find_config);
+
+struct snd_soc_acpi_mach snd_soc_acpi_amd_sof_machines[] = {
+	{
+		.id = "AMDI1019",
+		.drv_name = "renoir-dsp",
+		.pdata = (void *)&acp_quirk_data,
+		.fw_filename = "sof-rn.ri",
+		.sof_tplg_filename = "sof-acp.tplg",
+	},
+	{},
+};
+EXPORT_SYMBOL(snd_soc_acpi_amd_sof_machines);
+
+struct snd_soc_acpi_mach snd_soc_acpi_amd_acp_machines[] = {
+	{
+		.id = "AMDI1019",
+		.drv_name = "renoir-acp",
+		.pdata = (void *)&acp_quirk_data,
+	},
+	{},
+};
+EXPORT_SYMBOL(snd_soc_acpi_amd_acp_machines);
+
+MODULE_LICENSE("Dual BSD/GPL");