1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c
new file mode 100644
index 000000000000..c4a54861bfb4
--- /dev/null
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/acpi.c
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Copyright The Asahi Linux Contributors
+ */
+
+#include <linux/acpi.h>
+#include "debug.h"
+#include "core.h"
+#include "common.h"
+
+void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type,
+		      struct brcmf_mp_device *settings)
+{
+	acpi_status status;
+	const union acpi_object *o;
+	struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
+	struct acpi_device *adev = ACPI_COMPANION(dev);
+
+	if (!adev)
+		return;
+
+	if (!ACPI_FAILURE(acpi_dev_get_property(adev, "module-instance",
+						ACPI_TYPE_STRING, &o))) {
+		brcmf_dbg(INFO, "ACPI module-instance=%s\n", o->string.pointer);
+		settings->board_type = devm_kasprintf(dev, GFP_KERNEL,
+						      "apple,%s",
+						      o->string.pointer);
+	} else {
+		brcmf_dbg(INFO, "No ACPI module-instance\n");
+		return;
+	}
+
+	status = acpi_evaluate_object(adev->handle, "RWCV", NULL, &buf);
+	o = buf.pointer;
+	if (!ACPI_FAILURE(status) && o && o->type == ACPI_TYPE_BUFFER &&
+	    o->buffer.length >= 2) {
+		char *antenna_sku = devm_kzalloc(dev, 3, GFP_KERNEL);
+
+		if (antenna_sku) {
+			memcpy(antenna_sku, o->buffer.pointer, 2);
+			brcmf_dbg(INFO, "ACPI RWCV data=%*phN antenna-sku=%s\n",
+				  (int)o->buffer.length, o->buffer.pointer,
+				  antenna_sku);
+			settings->antenna_sku = antenna_sku;
+		}
+
+		kfree(buf.pointer);
+	} else {
+		brcmf_dbg(INFO, "No ACPI antenna-sku\n");
+	}
+}