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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * This file is part of wlcore
4 *
5 * Copyright (C) 2013 Texas Instruments Inc.
6 */
7
8#include <linux/pm_runtime.h>
9
10#include "acx.h"
11#include "wlcore.h"
12#include "debug.h"
13#include "sysfs.h"
14
15static ssize_t bt_coex_state_show(struct device *dev,
16 struct device_attribute *attr,
17 char *buf)
18{
19 struct wl1271 *wl = dev_get_drvdata(dev);
20 ssize_t len;
21
22 mutex_lock(&wl->mutex);
23 len = sysfs_emit(buf, "%d\n\n0 - off\n1 - on\n", wl->sg_enabled);
24 mutex_unlock(&wl->mutex);
25
26 return len;
27
28}
29
30static ssize_t bt_coex_state_store(struct device *dev,
31 struct device_attribute *attr,
32 const char *buf, size_t count)
33{
34 struct wl1271 *wl = dev_get_drvdata(dev);
35 unsigned long res;
36 int ret;
37
38 ret = kstrtoul(buf, 10, &res);
39 if (ret < 0) {
40 wl1271_warning("incorrect value written to bt_coex_mode");
41 return count;
42 }
43
44 mutex_lock(&wl->mutex);
45
46 res = !!res;
47
48 if (res == wl->sg_enabled)
49 goto out;
50
51 wl->sg_enabled = res;
52
53 if (unlikely(wl->state != WLCORE_STATE_ON))
54 goto out;
55
56 ret = pm_runtime_resume_and_get(wl->dev);
57 if (ret < 0)
58 goto out;
59
60 wl1271_acx_sg_enable(wl, wl->sg_enabled);
61 pm_runtime_mark_last_busy(wl->dev);
62 pm_runtime_put_autosuspend(wl->dev);
63
64 out:
65 mutex_unlock(&wl->mutex);
66 return count;
67}
68
69static DEVICE_ATTR_RW(bt_coex_state);
70
71static ssize_t hw_pg_ver_show(struct device *dev,
72 struct device_attribute *attr,
73 char *buf)
74{
75 struct wl1271 *wl = dev_get_drvdata(dev);
76 ssize_t len;
77
78 mutex_lock(&wl->mutex);
79 if (wl->hw_pg_ver >= 0)
80 len = sysfs_emit(buf, "%d\n", wl->hw_pg_ver);
81 else
82 len = sysfs_emit(buf, "n/a\n");
83 mutex_unlock(&wl->mutex);
84
85 return len;
86}
87
88static DEVICE_ATTR_RO(hw_pg_ver);
89
90static ssize_t wl1271_sysfs_read_fwlog(struct file *filp, struct kobject *kobj,
91 struct bin_attribute *bin_attr,
92 char *buffer, loff_t pos, size_t count)
93{
94 struct device *dev = kobj_to_dev(kobj);
95 struct wl1271 *wl = dev_get_drvdata(dev);
96 ssize_t len;
97 int ret;
98
99 ret = mutex_lock_interruptible(&wl->mutex);
100 if (ret < 0)
101 return -ERESTARTSYS;
102
103 /* Check if the fwlog is still valid */
104 if (wl->fwlog_size < 0) {
105 mutex_unlock(&wl->mutex);
106 return 0;
107 }
108
109 /* Seeking is not supported - old logs are not kept. Disregard pos. */
110 len = min_t(size_t, count, wl->fwlog_size);
111 wl->fwlog_size -= len;
112 memcpy(buffer, wl->fwlog, len);
113
114 /* Make room for new messages */
115 memmove(wl->fwlog, wl->fwlog + len, wl->fwlog_size);
116
117 mutex_unlock(&wl->mutex);
118
119 return len;
120}
121
122static const struct bin_attribute fwlog_attr = {
123 .attr = { .name = "fwlog", .mode = 0400 },
124 .read = wl1271_sysfs_read_fwlog,
125};
126
127int wlcore_sysfs_init(struct wl1271 *wl)
128{
129 int ret;
130
131 /* Create sysfs file to control bt coex state */
132 ret = device_create_file(wl->dev, &dev_attr_bt_coex_state);
133 if (ret < 0) {
134 wl1271_error("failed to create sysfs file bt_coex_state");
135 goto out;
136 }
137
138 /* Create sysfs file to get HW PG version */
139 ret = device_create_file(wl->dev, &dev_attr_hw_pg_ver);
140 if (ret < 0) {
141 wl1271_error("failed to create sysfs file hw_pg_ver");
142 goto out_bt_coex_state;
143 }
144
145 /* Create sysfs file for the FW log */
146 ret = device_create_bin_file(wl->dev, &fwlog_attr);
147 if (ret < 0) {
148 wl1271_error("failed to create sysfs file fwlog");
149 goto out_hw_pg_ver;
150 }
151
152 goto out;
153
154out_hw_pg_ver:
155 device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
156
157out_bt_coex_state:
158 device_remove_file(wl->dev, &dev_attr_bt_coex_state);
159
160out:
161 return ret;
162}
163
164void wlcore_sysfs_free(struct wl1271 *wl)
165{
166 device_remove_bin_file(wl->dev, &fwlog_attr);
167
168 device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
169
170 device_remove_file(wl->dev, &dev_attr_bt_coex_state);
171}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * This file is part of wlcore
4 *
5 * Copyright (C) 2013 Texas Instruments Inc.
6 */
7
8#include <linux/pm_runtime.h>
9
10#include "acx.h"
11#include "wlcore.h"
12#include "debug.h"
13#include "sysfs.h"
14
15static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
16 struct device_attribute *attr,
17 char *buf)
18{
19 struct wl1271 *wl = dev_get_drvdata(dev);
20 ssize_t len;
21
22 len = PAGE_SIZE;
23
24 mutex_lock(&wl->mutex);
25 len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
26 wl->sg_enabled);
27 mutex_unlock(&wl->mutex);
28
29 return len;
30
31}
32
33static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
34 struct device_attribute *attr,
35 const char *buf, size_t count)
36{
37 struct wl1271 *wl = dev_get_drvdata(dev);
38 unsigned long res;
39 int ret;
40
41 ret = kstrtoul(buf, 10, &res);
42 if (ret < 0) {
43 wl1271_warning("incorrect value written to bt_coex_mode");
44 return count;
45 }
46
47 mutex_lock(&wl->mutex);
48
49 res = !!res;
50
51 if (res == wl->sg_enabled)
52 goto out;
53
54 wl->sg_enabled = res;
55
56 if (unlikely(wl->state != WLCORE_STATE_ON))
57 goto out;
58
59 ret = pm_runtime_get_sync(wl->dev);
60 if (ret < 0) {
61 pm_runtime_put_noidle(wl->dev);
62 goto out;
63 }
64
65 wl1271_acx_sg_enable(wl, wl->sg_enabled);
66 pm_runtime_mark_last_busy(wl->dev);
67 pm_runtime_put_autosuspend(wl->dev);
68
69 out:
70 mutex_unlock(&wl->mutex);
71 return count;
72}
73
74static DEVICE_ATTR(bt_coex_state, 0644,
75 wl1271_sysfs_show_bt_coex_state,
76 wl1271_sysfs_store_bt_coex_state);
77
78static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
79 struct device_attribute *attr,
80 char *buf)
81{
82 struct wl1271 *wl = dev_get_drvdata(dev);
83 ssize_t len;
84
85 len = PAGE_SIZE;
86
87 mutex_lock(&wl->mutex);
88 if (wl->hw_pg_ver >= 0)
89 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
90 else
91 len = snprintf(buf, len, "n/a\n");
92 mutex_unlock(&wl->mutex);
93
94 return len;
95}
96
97static DEVICE_ATTR(hw_pg_ver, 0444, wl1271_sysfs_show_hw_pg_ver, NULL);
98
99static ssize_t wl1271_sysfs_read_fwlog(struct file *filp, struct kobject *kobj,
100 struct bin_attribute *bin_attr,
101 char *buffer, loff_t pos, size_t count)
102{
103 struct device *dev = container_of(kobj, struct device, kobj);
104 struct wl1271 *wl = dev_get_drvdata(dev);
105 ssize_t len;
106 int ret;
107
108 ret = mutex_lock_interruptible(&wl->mutex);
109 if (ret < 0)
110 return -ERESTARTSYS;
111
112 /* Check if the fwlog is still valid */
113 if (wl->fwlog_size < 0) {
114 mutex_unlock(&wl->mutex);
115 return 0;
116 }
117
118 /* Seeking is not supported - old logs are not kept. Disregard pos. */
119 len = min_t(size_t, count, wl->fwlog_size);
120 wl->fwlog_size -= len;
121 memcpy(buffer, wl->fwlog, len);
122
123 /* Make room for new messages */
124 memmove(wl->fwlog, wl->fwlog + len, wl->fwlog_size);
125
126 mutex_unlock(&wl->mutex);
127
128 return len;
129}
130
131static const struct bin_attribute fwlog_attr = {
132 .attr = { .name = "fwlog", .mode = 0400 },
133 .read = wl1271_sysfs_read_fwlog,
134};
135
136int wlcore_sysfs_init(struct wl1271 *wl)
137{
138 int ret;
139
140 /* Create sysfs file to control bt coex state */
141 ret = device_create_file(wl->dev, &dev_attr_bt_coex_state);
142 if (ret < 0) {
143 wl1271_error("failed to create sysfs file bt_coex_state");
144 goto out;
145 }
146
147 /* Create sysfs file to get HW PG version */
148 ret = device_create_file(wl->dev, &dev_attr_hw_pg_ver);
149 if (ret < 0) {
150 wl1271_error("failed to create sysfs file hw_pg_ver");
151 goto out_bt_coex_state;
152 }
153
154 /* Create sysfs file for the FW log */
155 ret = device_create_bin_file(wl->dev, &fwlog_attr);
156 if (ret < 0) {
157 wl1271_error("failed to create sysfs file fwlog");
158 goto out_hw_pg_ver;
159 }
160
161 goto out;
162
163out_hw_pg_ver:
164 device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
165
166out_bt_coex_state:
167 device_remove_file(wl->dev, &dev_attr_bt_coex_state);
168
169out:
170 return ret;
171}
172
173void wlcore_sysfs_free(struct wl1271 *wl)
174{
175 device_remove_bin_file(wl->dev, &fwlog_attr);
176
177 device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
178
179 device_remove_file(wl->dev, &dev_attr_bt_coex_state);
180}