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Pull smart-battery into release branch
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| /* | ||
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
| * | ||
| * 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. | ||
| * | ||
| * You should have received a copy of the GNU General Public License along | ||
| * with this program; if not, write to the Free Software Foundation, Inc., | ||
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | ||
| * | ||
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
| */ | ||
|
|
||
| #include <linux/kernel.h> | ||
| #include <linux/module.h> | ||
| #include <linux/init.h> | ||
| #include <linux/acpi.h> | ||
| #include <linux/types.h> | ||
| #include <linux/proc_fs.h> | ||
| #include <linux/seq_file.h> | ||
| #include <acpi/acpi_bus.h> | ||
| #include <acpi/acpi_drivers.h> | ||
| #include <acpi/acmacros.h> | ||
| #include <acpi/actypes.h> | ||
| #include <acpi/acutils.h> | ||
|
|
||
| ACPI_MODULE_NAME("cm_sbs") | ||
| #define ACPI_AC_CLASS "ac_adapter" | ||
| #define ACPI_BATTERY_CLASS "battery" | ||
| #define ACPI_SBS_COMPONENT 0x00080000 | ||
| #define _COMPONENT ACPI_SBS_COMPONENT | ||
| static struct proc_dir_entry *acpi_ac_dir; | ||
| static struct proc_dir_entry *acpi_battery_dir; | ||
|
|
||
| static struct semaphore cm_sbs_sem; | ||
|
|
||
| static int lock_ac_dir_cnt = 0; | ||
| static int lock_battery_dir_cnt = 0; | ||
|
|
||
| struct proc_dir_entry *acpi_lock_ac_dir(void) | ||
| { | ||
|
|
||
| down(&cm_sbs_sem); | ||
| if (!acpi_ac_dir) { | ||
| acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir); | ||
| } | ||
| if (acpi_ac_dir) { | ||
| lock_ac_dir_cnt++; | ||
| } else { | ||
| ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | ||
| "Cannot create %s\n", ACPI_AC_CLASS)); | ||
| } | ||
| up(&cm_sbs_sem); | ||
| return acpi_ac_dir; | ||
| } | ||
|
|
||
| EXPORT_SYMBOL(acpi_lock_ac_dir); | ||
|
|
||
| void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir_param) | ||
| { | ||
|
|
||
| down(&cm_sbs_sem); | ||
| if (acpi_ac_dir_param) { | ||
| lock_ac_dir_cnt--; | ||
| } | ||
| if (lock_ac_dir_cnt == 0 && acpi_ac_dir_param && acpi_ac_dir) { | ||
| remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir); | ||
| acpi_ac_dir = 0; | ||
| } | ||
| up(&cm_sbs_sem); | ||
| } | ||
|
|
||
| EXPORT_SYMBOL(acpi_unlock_ac_dir); | ||
|
|
||
| struct proc_dir_entry *acpi_lock_battery_dir(void) | ||
| { | ||
|
|
||
| down(&cm_sbs_sem); | ||
| if (!acpi_battery_dir) { | ||
| acpi_battery_dir = | ||
| proc_mkdir(ACPI_BATTERY_CLASS, acpi_root_dir); | ||
| } | ||
| if (acpi_battery_dir) { | ||
| lock_battery_dir_cnt++; | ||
| } else { | ||
| ACPI_DEBUG_PRINT((ACPI_DB_ERROR, | ||
| "Cannot create %s\n", ACPI_BATTERY_CLASS)); | ||
| } | ||
| up(&cm_sbs_sem); | ||
| return acpi_battery_dir; | ||
| } | ||
|
|
||
| EXPORT_SYMBOL(acpi_lock_battery_dir); | ||
|
|
||
| void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir_param) | ||
| { | ||
|
|
||
| down(&cm_sbs_sem); | ||
| if (acpi_battery_dir_param) { | ||
| lock_battery_dir_cnt--; | ||
| } | ||
| if (lock_battery_dir_cnt == 0 && acpi_battery_dir_param | ||
| && acpi_battery_dir) { | ||
| remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir); | ||
| acpi_battery_dir = 0; | ||
| } | ||
| up(&cm_sbs_sem); | ||
| return; | ||
| } | ||
|
|
||
| EXPORT_SYMBOL(acpi_unlock_battery_dir); | ||
|
|
||
| static int __init acpi_cm_sbs_init(void) | ||
| { | ||
|
|
||
| if (acpi_disabled) | ||
| return 0; | ||
|
|
||
| init_MUTEX(&cm_sbs_sem); | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| subsys_initcall(acpi_cm_sbs_init); |
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