1// SPDX-License-Identifier: GPL-2.0-only
 2// Copyright (c) 2021 Intel Corporation
 3
 4#include <linux/device.h>
 5#include <linux/kernel.h>
 6#include <linux/peci.h>
 7
 8#include "internal.h"
 9
10static int rescan_controller(struct device *dev, void *data)
11{
12	if (dev->type != &peci_controller_type)
13		return 0;
14
15	return peci_controller_scan_devices(to_peci_controller(dev));
16}
17
18static ssize_t rescan_store(const struct bus_type *bus, const char *buf, size_t count)
19{
20	bool res;
21	int ret;
22
23	ret = kstrtobool(buf, &res);
24	if (ret)
25		return ret;
26
27	if (!res)
28		return count;
29
30	ret = bus_for_each_dev(&peci_bus_type, NULL, NULL, rescan_controller);
31	if (ret)
32		return ret;
33
34	return count;
35}
36static BUS_ATTR_WO(rescan);
37
38static struct attribute *peci_bus_attrs[] = {
39	&bus_attr_rescan.attr,
40	NULL
41};
42
43static const struct attribute_group peci_bus_group = {
44	.attrs = peci_bus_attrs,
45};
46
47const struct attribute_group *peci_bus_groups[] = {
48	&peci_bus_group,
49	NULL
50};
51
52static ssize_t remove_store(struct device *dev, struct device_attribute *attr,
53			    const char *buf, size_t count)
54{
55	struct peci_device *device = to_peci_device(dev);
56	bool res;
57	int ret;
58
59	ret = kstrtobool(buf, &res);
60	if (ret)
61		return ret;
62
63	if (res && device_remove_file_self(dev, attr))
64		peci_device_destroy(device);
65
66	return count;
67}
68static DEVICE_ATTR_IGNORE_LOCKDEP(remove, 0200, NULL, remove_store);
69
70static struct attribute *peci_device_attrs[] = {
71	&dev_attr_remove.attr,
72	NULL
73};
74
75static const struct attribute_group peci_device_group = {
76	.attrs = peci_device_attrs,
77};
78
79const struct attribute_group *peci_device_groups[] = {
80	&peci_device_group,
81	NULL
82};