1*0f485805SHector Martin // SPDX-License-Identifier: ISC
2*0f485805SHector Martin /*
3*0f485805SHector Martin * Copyright The Asahi Linux Contributors
4*0f485805SHector Martin */
5*0f485805SHector Martin
6*0f485805SHector Martin #include <linux/acpi.h>
7*0f485805SHector Martin #include "debug.h"
8*0f485805SHector Martin #include "core.h"
9*0f485805SHector Martin #include "common.h"
10*0f485805SHector Martin
brcmf_acpi_probe(struct device * dev,enum brcmf_bus_type bus_type,struct brcmf_mp_device * settings)11*0f485805SHector Martin void brcmf_acpi_probe(struct device *dev, enum brcmf_bus_type bus_type,
12*0f485805SHector Martin struct brcmf_mp_device *settings)
13*0f485805SHector Martin {
14*0f485805SHector Martin acpi_status status;
15*0f485805SHector Martin const union acpi_object *o;
16*0f485805SHector Martin struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
17*0f485805SHector Martin struct acpi_device *adev = ACPI_COMPANION(dev);
18*0f485805SHector Martin
19*0f485805SHector Martin if (!adev)
20*0f485805SHector Martin return;
21*0f485805SHector Martin
22*0f485805SHector Martin if (!ACPI_FAILURE(acpi_dev_get_property(adev, "module-instance",
23*0f485805SHector Martin ACPI_TYPE_STRING, &o))) {
24*0f485805SHector Martin brcmf_dbg(INFO, "ACPI module-instance=%s\n", o->string.pointer);
25*0f485805SHector Martin settings->board_type = devm_kasprintf(dev, GFP_KERNEL,
26*0f485805SHector Martin "apple,%s",
27*0f485805SHector Martin o->string.pointer);
28*0f485805SHector Martin } else {
29*0f485805SHector Martin brcmf_dbg(INFO, "No ACPI module-instance\n");
30*0f485805SHector Martin return;
31*0f485805SHector Martin }
32*0f485805SHector Martin
33*0f485805SHector Martin status = acpi_evaluate_object(adev->handle, "RWCV", NULL, &buf);
34*0f485805SHector Martin o = buf.pointer;
35*0f485805SHector Martin if (!ACPI_FAILURE(status) && o && o->type == ACPI_TYPE_BUFFER &&
36*0f485805SHector Martin o->buffer.length >= 2) {
37*0f485805SHector Martin char *antenna_sku = devm_kzalloc(dev, 3, GFP_KERNEL);
38*0f485805SHector Martin
39*0f485805SHector Martin if (antenna_sku) {
40*0f485805SHector Martin memcpy(antenna_sku, o->buffer.pointer, 2);
41*0f485805SHector Martin brcmf_dbg(INFO, "ACPI RWCV data=%*phN antenna-sku=%s\n",
42*0f485805SHector Martin (int)o->buffer.length, o->buffer.pointer,
43*0f485805SHector Martin antenna_sku);
44*0f485805SHector Martin settings->antenna_sku = antenna_sku;
45*0f485805SHector Martin }
46*0f485805SHector Martin
47*0f485805SHector Martin kfree(buf.pointer);
48*0f485805SHector Martin } else {
49*0f485805SHector Martin brcmf_dbg(INFO, "No ACPI antenna-sku\n");
50*0f485805SHector Martin }
51*0f485805SHector Martin }
52