1 // SPDX-License-Identifier: GPL-2.0-only
3 * This file is part of wlcore
5 * Copyright (C) 2013 Texas Instruments Inc.
8 #include <linux/pm_runtime.h>
15 static ssize_t wl1271_sysfs_show_bt_coex_state(struct device *dev,
16 struct device_attribute *attr,
19 struct wl1271 *wl = dev_get_drvdata(dev);
24 mutex_lock(&wl->mutex);
25 len = snprintf(buf, len, "%d\n\n0 - off\n1 - on\n",
27 mutex_unlock(&wl->mutex);
33 static ssize_t wl1271_sysfs_store_bt_coex_state(struct device *dev,
34 struct device_attribute *attr,
35 const char *buf, size_t count)
37 struct wl1271 *wl = dev_get_drvdata(dev);
41 ret = kstrtoul(buf, 10, &res);
43 wl1271_warning("incorrect value written to bt_coex_mode");
47 mutex_lock(&wl->mutex);
51 if (res == wl->sg_enabled)
56 if (unlikely(wl->state != WLCORE_STATE_ON))
59 ret = pm_runtime_get_sync(wl->dev);
61 pm_runtime_put_noidle(wl->dev);
65 wl1271_acx_sg_enable(wl, wl->sg_enabled);
66 pm_runtime_mark_last_busy(wl->dev);
67 pm_runtime_put_autosuspend(wl->dev);
70 mutex_unlock(&wl->mutex);
74 static DEVICE_ATTR(bt_coex_state, 0644,
75 wl1271_sysfs_show_bt_coex_state,
76 wl1271_sysfs_store_bt_coex_state);
78 static ssize_t wl1271_sysfs_show_hw_pg_ver(struct device *dev,
79 struct device_attribute *attr,
82 struct wl1271 *wl = dev_get_drvdata(dev);
87 mutex_lock(&wl->mutex);
88 if (wl->hw_pg_ver >= 0)
89 len = snprintf(buf, len, "%d\n", wl->hw_pg_ver);
91 len = snprintf(buf, len, "n/a\n");
92 mutex_unlock(&wl->mutex);
97 static DEVICE_ATTR(hw_pg_ver, 0444, wl1271_sysfs_show_hw_pg_ver, NULL);
99 static 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)
103 struct device *dev = kobj_to_dev(kobj);
104 struct wl1271 *wl = dev_get_drvdata(dev);
108 ret = mutex_lock_interruptible(&wl->mutex);
112 /* Check if the fwlog is still valid */
113 if (wl->fwlog_size < 0) {
114 mutex_unlock(&wl->mutex);
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);
123 /* Make room for new messages */
124 memmove(wl->fwlog, wl->fwlog + len, wl->fwlog_size);
126 mutex_unlock(&wl->mutex);
131 static const struct bin_attribute fwlog_attr = {
132 .attr = { .name = "fwlog", .mode = 0400 },
133 .read = wl1271_sysfs_read_fwlog,
136 int wlcore_sysfs_init(struct wl1271 *wl)
140 /* Create sysfs file to control bt coex state */
141 ret = device_create_file(wl->dev, &dev_attr_bt_coex_state);
143 wl1271_error("failed to create sysfs file bt_coex_state");
147 /* Create sysfs file to get HW PG version */
148 ret = device_create_file(wl->dev, &dev_attr_hw_pg_ver);
150 wl1271_error("failed to create sysfs file hw_pg_ver");
151 goto out_bt_coex_state;
154 /* Create sysfs file for the FW log */
155 ret = device_create_bin_file(wl->dev, &fwlog_attr);
157 wl1271_error("failed to create sysfs file fwlog");
164 device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
167 device_remove_file(wl->dev, &dev_attr_bt_coex_state);
173 void wlcore_sysfs_free(struct wl1271 *wl)
175 device_remove_bin_file(wl->dev, &fwlog_attr);
177 device_remove_file(wl->dev, &dev_attr_hw_pg_ver);
179 device_remove_file(wl->dev, &dev_attr_bt_coex_state);