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1// SPDX-License-Identifier: ISC2/*3 * Copyright The Asahi Linux Contributors4 */5 6#include <linux/acpi.h>7#include "debug.h"8#include "core.h"9#include "common.h"10 11void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type,12 struct brcmf_mp_device *settings)13{14 acpi_status status;15 const union acpi_object *o;16 struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};17 struct acpi_device *adev = ACPI_COMPANION(dev);18 19 if (!adev)20 return;21 22 if (!ACPI_FAILURE(acpi_dev_get_property(adev, "module-instance",23 ACPI_TYPE_STRING, &o))) {24 brcmf_dbg(INFO, "ACPI module-instance=%s\n", o->string.pointer);25 settings->board_type = devm_kasprintf(dev, GFP_KERNEL,26 "apple,%s",27 o->string.pointer);28 } else {29 brcmf_dbg(INFO, "No ACPI module-instance\n");30 return;31 }32 33 status = acpi_evaluate_object(adev->handle, "RWCV", NULL, &buf);34 o = buf.pointer;35 if (!ACPI_FAILURE(status) && o && o->type == ACPI_TYPE_BUFFER &&36 o->buffer.length >= 2) {37 char *antenna_sku = devm_kzalloc(dev, 3, GFP_KERNEL);38 39 if (antenna_sku) {40 memcpy(antenna_sku, o->buffer.pointer, 2);41 brcmf_dbg(INFO, "ACPI RWCV data=%*phN antenna-sku=%s\n",42 (int)o->buffer.length, o->buffer.pointer,43 antenna_sku);44 settings->antenna_sku = antenna_sku;45 }46 47 kfree(buf.pointer);48 } else {49 brcmf_dbg(INFO, "No ACPI antenna-sku\n");50 }51}52