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c942fddf87
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/acpi.h>
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#include <linux/types.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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#define PREFIX "ACPI: "
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ACPI_MODULE_NAME("cm_sbs");
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#define ACPI_AC_CLASS "ac_adapter"
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#define ACPI_BATTERY_CLASS "battery"
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#define _COMPONENT ACPI_SBS_COMPONENT
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static struct proc_dir_entry *acpi_ac_dir;
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static struct proc_dir_entry *acpi_battery_dir;
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static DEFINE_MUTEX(cm_sbs_mutex);
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static int lock_ac_dir_cnt;
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static int lock_battery_dir_cnt;
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struct proc_dir_entry *acpi_lock_ac_dir(void)
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{
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mutex_lock(&cm_sbs_mutex);
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if (!acpi_ac_dir)
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acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir);
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if (acpi_ac_dir) {
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lock_ac_dir_cnt++;
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} else {
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printk(KERN_ERR PREFIX
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"Cannot create %s\n", ACPI_AC_CLASS);
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}
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mutex_unlock(&cm_sbs_mutex);
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return acpi_ac_dir;
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}
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EXPORT_SYMBOL(acpi_lock_ac_dir);
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void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir_param)
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{
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mutex_lock(&cm_sbs_mutex);
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if (acpi_ac_dir_param)
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lock_ac_dir_cnt--;
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if (lock_ac_dir_cnt == 0 && acpi_ac_dir_param && acpi_ac_dir) {
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remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
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acpi_ac_dir = NULL;
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}
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mutex_unlock(&cm_sbs_mutex);
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}
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EXPORT_SYMBOL(acpi_unlock_ac_dir);
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struct proc_dir_entry *acpi_lock_battery_dir(void)
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{
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mutex_lock(&cm_sbs_mutex);
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if (!acpi_battery_dir) {
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acpi_battery_dir =
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proc_mkdir(ACPI_BATTERY_CLASS, acpi_root_dir);
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}
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if (acpi_battery_dir) {
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lock_battery_dir_cnt++;
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} else {
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printk(KERN_ERR PREFIX
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"Cannot create %s\n", ACPI_BATTERY_CLASS);
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}
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mutex_unlock(&cm_sbs_mutex);
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return acpi_battery_dir;
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}
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EXPORT_SYMBOL(acpi_lock_battery_dir);
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void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir_param)
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{
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mutex_lock(&cm_sbs_mutex);
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if (acpi_battery_dir_param)
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lock_battery_dir_cnt--;
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if (lock_battery_dir_cnt == 0 && acpi_battery_dir_param
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&& acpi_battery_dir) {
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remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir);
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acpi_battery_dir = NULL;
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}
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mutex_unlock(&cm_sbs_mutex);
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return;
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}
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EXPORT_SYMBOL(acpi_unlock_battery_dir);
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