1 /*
2 * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 /**
18 * DOC: wlan_hdd_sysfs_wifi_features.c
19 *
20 * Wifi Feature sysfs implementation
21 */
22
23 #include <linux/kobject.h>
24
25 #include "wlan_hdd_includes.h"
26 #include "wlan_hdd_sysfs_wifi_features.h"
27 #include "wlan_hdd_sysfs.h"
28 #include "osif_sync.h"
29
__hdd_sysfs_feature_set_show(struct hdd_context * hdd_ctx,struct kobj_attribute * attr,char * buf)30 static ssize_t __hdd_sysfs_feature_set_show(struct hdd_context *hdd_ctx,
31 struct kobj_attribute *attr,
32 char *buf)
33 {
34 ssize_t ret_val = 0;
35 uint8_t i = 0;
36 char const *solution_provider = "QCT";
37
38 if (!hdd_ctx->oem_data_len) {
39 hdd_debug("Feature info is not available");
40 return 0;
41 }
42
43 for (i = 0; i < hdd_ctx->oem_data_len; i++) {
44 /* The Solution Provider Info is from index 2 to 4 */
45 if (i == 2) {
46 ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val,
47 "%s", solution_provider);
48 i = i + 2;
49 continue;
50 }
51 ret_val += scnprintf(buf + ret_val, PAGE_SIZE - ret_val, "%.2X",
52 hdd_ctx->oem_data[i]);
53 }
54
55 buf[ret_val] = '\n';
56
57 return ret_val;
58 }
59
hdd_sysfs_feature_set_show(struct kobject * kobj,struct kobj_attribute * attr,char * buf)60 static ssize_t hdd_sysfs_feature_set_show(struct kobject *kobj,
61 struct kobj_attribute *attr,
62 char *buf)
63 {
64 struct osif_psoc_sync *psoc_sync;
65 struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
66 ssize_t errno_size;
67 int ret;
68
69 ret = wlan_hdd_validate_context(hdd_ctx);
70 if (ret != 0)
71 return ret;
72
73 errno_size = osif_psoc_sync_op_start(wiphy_dev(hdd_ctx->wiphy),
74 &psoc_sync);
75 if (errno_size)
76 return errno_size;
77
78 errno_size = __hdd_sysfs_feature_set_show(hdd_ctx, attr, buf);
79
80 osif_psoc_sync_op_stop(psoc_sync);
81
82 return errno_size;
83 }
84
85 static struct kobj_attribute feature_set_attribute =
86 __ATTR(feature, 0660, hdd_sysfs_feature_set_show, NULL);
87
hdd_sysfs_create_wifi_feature_interface(struct kobject * wifi_kobject)88 void hdd_sysfs_create_wifi_feature_interface(struct kobject *wifi_kobject)
89 {
90 int error;
91
92 if (!wifi_kobject) {
93 hdd_err("could not get wifi kobject!");
94 return;
95 }
96
97 error = sysfs_create_file(wifi_kobject,
98 &feature_set_attribute.attr);
99 if (error)
100 hdd_err("could not create dump in progress sysfs file");
101 }
102
hdd_sysfs_destroy_wifi_feature_interface(struct kobject * wifi_kobject)103 void hdd_sysfs_destroy_wifi_feature_interface(struct kobject *wifi_kobject)
104 {
105 if (!wifi_kobject) {
106 hdd_err("could not get wifi kobject!");
107 return;
108 }
109
110 sysfs_remove_file(wifi_kobject,
111 &feature_set_attribute.attr);
112 }
113