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
brcmf_acpi_probe(struct device * dev,enum brcmf_bus_type bus_type,struct brcmf_mp_device * settings)11 void 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
