1// SPDX-License-Identifier: ISC
2/*
3 * Copyright The Asahi Linux Contributors
4 */
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