1 /*
2 * Copyright (c) 2011-2020 The Linux Foundation. All rights reserved.
3 * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 /**
19 * DOC: wlan_hdd_sysfs_tx_stbc.c
20 *
21 * implementation for creating sysfs file tx_stbc
22 */
23
24 #include <wlan_hdd_includes.h>
25 #include <wlan_hdd_sysfs.h>
26 #include "osif_vdev_sync.h"
27 #include "sme_api.h"
28 #include <wlan_hdd_sysfs_tx_stbc.h>
29
hdd_sysfs_get_tx_stbc(struct hdd_adapter * adapter,int * value)30 static int hdd_sysfs_get_tx_stbc(struct hdd_adapter *adapter, int *value)
31 {
32 mac_handle_t mac_handle = adapter->hdd_ctx->mac_handle;
33 int ret;
34
35 hdd_enter();
36 ret = sme_get_ht_config(mac_handle, adapter->deflink->vdev_id,
37 WNI_CFG_HT_CAP_INFO_TX_STBC);
38 if (ret < 0) {
39 hdd_err("Failed to get TX STBC value");
40 } else {
41 *value = ret;
42 ret = 0;
43 }
44
45 return ret;
46 }
47
48 static ssize_t
__hdd_sysfs_tx_stbc_show(struct net_device * net_dev,char * buf)49 __hdd_sysfs_tx_stbc_show(struct net_device *net_dev, char *buf)
50 {
51 struct hdd_adapter *adapter = netdev_priv(net_dev);
52 struct hdd_context *hdd_ctx;
53 int ret;
54 int value;
55
56 if (hdd_validate_adapter(adapter))
57 return -EINVAL;
58
59 hdd_ctx = WLAN_HDD_GET_CTX(adapter);
60 ret = wlan_hdd_validate_context(hdd_ctx);
61 if (ret)
62 return ret;
63
64 if (!wlan_hdd_validate_modules_state(hdd_ctx))
65 return -EINVAL;
66
67 ret = hdd_sysfs_get_tx_stbc(adapter, &value);
68 if (ret) {
69 hdd_err_rl("Get_TX_STBC failed %d", ret);
70 return ret;
71 }
72
73 return scnprintf(buf, PAGE_SIZE, "%d\n", value);
74 }
75
76 static ssize_t
hdd_sysfs_tx_stbc_show(struct device * dev,struct device_attribute * attr,char * buf)77 hdd_sysfs_tx_stbc_show(struct device *dev,
78 struct device_attribute *attr,
79 char *buf)
80 {
81 struct net_device *net_dev = container_of(dev, struct net_device, dev);
82 struct osif_vdev_sync *vdev_sync;
83 ssize_t err_size;
84
85 err_size = osif_vdev_sync_op_start(net_dev, &vdev_sync);
86 if (err_size)
87 return err_size;
88
89 err_size = __hdd_sysfs_tx_stbc_show(net_dev, buf);
90
91 osif_vdev_sync_op_stop(vdev_sync);
92
93 return err_size;
94 }
95
96 static DEVICE_ATTR(tx_stbc, 0440,
97 hdd_sysfs_tx_stbc_show, NULL);
98
hdd_sysfs_tx_stbc_create(struct hdd_adapter * adapter)99 int hdd_sysfs_tx_stbc_create(struct hdd_adapter *adapter)
100 {
101 int error;
102
103 error = device_create_file(&adapter->dev->dev,
104 &dev_attr_tx_stbc);
105 if (error)
106 hdd_err("could not create tx_stbc sysfs file");
107
108 return error;
109 }
110
hdd_sysfs_tx_stbc_destroy(struct hdd_adapter * adapter)111 void hdd_sysfs_tx_stbc_destroy(struct hdd_adapter *adapter)
112 {
113 device_remove_file(&adapter->dev->dev, &dev_attr_tx_stbc);
114 }
115