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