| /* |
| * acpi_sbs.c - ACPI Smart Battery System Driver ($Revision: 1.16 $) |
| * |
| * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu> |
| * |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| * |
| * 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/init.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/kernel.h> |
| #include <linux/proc_fs.h> |
| #include <linux/seq_file.h> |
| #include <asm/uaccess.h> |
| #include <linux/acpi.h> |
| #include <linux/timer.h> |
| #include <linux/jiffies.h> |
| #include <linux/delay.h> |
| |
| #include "sbshc.h" |
| |
| #define ACPI_SBS_COMPONENT 0x00080000 |
| #define ACPI_SBS_CLASS "sbs" |
| #define ACPI_AC_CLASS "ac_adapter" |
| #define ACPI_BATTERY_CLASS "battery" |
| #define ACPI_SBS_DEVICE_NAME "Smart Battery System" |
| #define ACPI_SBS_FILE_INFO "info" |
| #define ACPI_SBS_FILE_STATE "state" |
| #define ACPI_SBS_FILE_ALARM "alarm" |
| #define ACPI_BATTERY_DIR_NAME "BAT%i" |
| #define ACPI_AC_DIR_NAME "AC0" |
| #define ACPI_SBC_SMBUS_ADDR 0x9 |
| #define ACPI_SBSM_SMBUS_ADDR 0xa |
| #define ACPI_SB_SMBUS_ADDR 0xb |
| #define ACPI_SBS_AC_NOTIFY_STATUS 0x80 |
| #define ACPI_SBS_BATTERY_NOTIFY_STATUS 0x80 |
| #define ACPI_SBS_BATTERY_NOTIFY_INFO 0x81 |
| |
| #define _COMPONENT ACPI_SBS_COMPONENT |
| |
| ACPI_MODULE_NAME("sbs"); |
| |
| MODULE_AUTHOR("Rich Townsend"); |
| MODULE_DESCRIPTION("Smart Battery System ACPI interface driver"); |
| MODULE_LICENSE("GPL"); |
| |
| #define DEF_CAPACITY_UNIT 3 |
| #define MAH_CAPACITY_UNIT 1 |
| #define MWH_CAPACITY_UNIT 2 |
| #define CAPACITY_UNIT DEF_CAPACITY_UNIT |
| |
| #define REQUEST_UPDATE_MODE 1 |
| #define QUEUE_UPDATE_MODE 2 |
| |
| #define DATA_TYPE_COMMON 0 |
| #define DATA_TYPE_INFO 1 |
| #define DATA_TYPE_STATE 2 |
| #define DATA_TYPE_ALARM 3 |
| #define DATA_TYPE_AC_STATE 4 |
| |
| extern struct proc_dir_entry *acpi_lock_ac_dir(void); |
| extern struct proc_dir_entry *acpi_lock_battery_dir(void); |
| extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir); |
| extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); |
| |
| #define MAX_SBS_BAT 4 |
| #define ACPI_SBS_BLOCK_MAX 32 |
| |
| #define UPDATE_DELAY 10 |
| |
| /* 0 - every time, > 0 - by update_time */ |
| static unsigned int update_time = 120; |
| |
| static unsigned int mode = CAPACITY_UNIT; |
| |
| module_param(update_time, uint, 0644); |
| module_param(mode, uint, 0444); |
| |
| static int acpi_sbs_add(struct acpi_device *device); |
| static int acpi_sbs_remove(struct acpi_device *device, int type); |
| static int acpi_sbs_resume(struct acpi_device *device); |
| |
| static const struct acpi_device_id sbs_device_ids[] = { |
| {"ACPI0002", 0}, |
| {"", 0}, |
| }; |
| MODULE_DEVICE_TABLE(acpi, sbs_device_ids); |
| |
| static struct acpi_driver acpi_sbs_driver = { |
| .name = "sbs", |
| .class = ACPI_SBS_CLASS, |
| .ids = sbs_device_ids, |
| .ops = { |
| .add = acpi_sbs_add, |
| .remove = acpi_sbs_remove, |
| .resume = acpi_sbs_resume, |
| }, |
| }; |
| |
| struct acpi_battery { |
| struct acpi_sbs *sbs; |
| struct proc_dir_entry *proc_entry; |
| int vscale; |
| int ipscale; |
| char manufacturer_name[ACPI_SBS_BLOCK_MAX]; |
| char device_name[ACPI_SBS_BLOCK_MAX]; |
| char device_chemistry[ACPI_SBS_BLOCK_MAX]; |
| u16 full_charge_capacity; |
| u16 design_capacity; |
| u16 design_voltage; |
| u16 serial_number; |
| u16 voltage_now; |
| s16 current_now; |
| u16 capacity_now; |
| u16 state; |
| u16 alarm_capacity; |
| u16 mode; |
| u8 id; |
| u8 alive:1; |
| u8 init_state:1; |
| u8 present:1; |
| }; |
| |
| struct acpi_sbs { |
| struct acpi_device *device; |
| struct acpi_smb_hc *hc; |
| struct mutex mutex; |
| struct proc_dir_entry *ac_entry; |
| struct acpi_battery battery[MAX_SBS_BAT]; |
| int zombie; |
| struct timer_list update_timer; |
| int run_cnt; |
| int update_proc_flg; |
| u8 batteries_supported; |
| u8 manager_present:1; |
| u8 charger_present:1; |
| }; |
| |
| static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type); |
| static void acpi_sbs_update_time(void *data); |
| |
| static int sbs_zombie(struct acpi_sbs *sbs) |
| { |
| return (sbs->zombie); |
| } |
| |
| static int sbs_mutex_lock(struct acpi_sbs *sbs) |
| { |
| if (sbs_zombie(sbs)) { |
| return -ENODEV; |
| } |
| mutex_lock(&sbs->mutex); |
| return 0; |
| } |
| |
| static void sbs_mutex_unlock(struct acpi_sbs *sbs) |
| { |
| mutex_unlock(&sbs->mutex); |
| } |
| |
| /* -------------------------------------------------------------------------- |
| Smart Battery System Management |
| -------------------------------------------------------------------------- */ |
| |
| static int acpi_check_update_proc(struct acpi_sbs *sbs) |
| { |
| acpi_status status = AE_OK; |
| |
| if (update_time == 0) { |
| sbs->update_proc_flg = 0; |
| return 0; |
| } |
| if (sbs->update_proc_flg == 0) { |
| status = acpi_os_execute(OSL_GPE_HANDLER, |
| acpi_sbs_update_time, sbs); |
| if (status != AE_OK) { |
| ACPI_EXCEPTION((AE_INFO, status, |
| "acpi_os_execute() failed")); |
| return 1; |
| } |
| sbs->update_proc_flg = 1; |
| } |
| return 0; |
| } |
| |
| static int acpi_battery_get_present(struct acpi_battery *battery) |
| { |
| s16 state; |
| int result = 0; |
| int is_present = 0; |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
| ACPI_SBSM_SMBUS_ADDR, 0x01, (u8 *)&state); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| } |
| if (!result) { |
| is_present = (state & 0x000f) & (1 << battery->id); |
| } |
| battery->present = is_present; |
| |
| return result; |
| } |
| |
| static int acpi_battery_select(struct acpi_battery *battery) |
| { |
| struct acpi_sbs *sbs = battery->sbs; |
| int result = 0; |
| s16 state; |
| int foo; |
| |
| if (sbs->manager_present) { |
| |
| /* Take special care not to knobble other nibbles of |
| * state (aka selector_state), since |
| * it causes charging to halt on SBSELs */ |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
| ACPI_SBSM_SMBUS_ADDR, 0x01, (u8 *)&state); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| foo = (state & 0x0fff) | (1 << (battery->id + 12)); |
| result = acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD, |
| ACPI_SBSM_SMBUS_ADDR, 0x01, (u8 *)&foo, 2); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_write() failed")); |
| goto end; |
| } |
| } |
| |
| end: |
| return result; |
| } |
| |
| static int acpi_sbsm_get_info(struct acpi_sbs *sbs) |
| { |
| int result = 0; |
| s16 battery_system_info; |
| |
| result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBSM_SMBUS_ADDR, 0x04, |
| (u8 *)&battery_system_info); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| sbs->manager_present = 1; |
| |
| end: |
| |
| return result; |
| } |
| |
| static int acpi_battery_get_info(struct acpi_battery *battery) |
| { |
| int result = 0; |
| s16 battery_mode; |
| s16 specification_info; |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x03, |
| (u8 *)&battery_mode); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| battery->mode = (battery_mode & 0x8000) >> 15; |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x10, |
| (u8 *)&battery->full_charge_capacity); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x18, |
| (u8 *)&battery->design_capacity); |
| |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x19, |
| (u8 *)&battery->design_voltage); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x1a, |
| (u8 *)&specification_info); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| switch ((specification_info & 0x0f00) >> 8) { |
| case 1: |
| battery->vscale = 10; |
| break; |
| case 2: |
| battery->vscale = 100; |
| break; |
| case 3: |
| battery->vscale = 1000; |
| break; |
| default: |
| battery->vscale = 1; |
| } |
| |
| switch ((specification_info & 0xf000) >> 12) { |
| case 1: |
| battery->ipscale = 10; |
| break; |
| case 2: |
| battery->ipscale = 100; |
| break; |
| case 3: |
| battery->ipscale = 1000; |
| break; |
| default: |
| battery->ipscale = 1; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x1c, |
| (u8 *)&battery->serial_number); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_BLOCK, ACPI_SB_SMBUS_ADDR, 0x20, |
| (u8 *)battery->manufacturer_name); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_read_str() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_BLOCK, ACPI_SB_SMBUS_ADDR, 0x21, |
| (u8 *)battery->device_name); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_read_str() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_BLOCK, ACPI_SB_SMBUS_ADDR, 0x22, |
| (u8 *)battery->device_chemistry); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_read_str() failed")); |
| goto end; |
| } |
| |
| end: |
| return result; |
| } |
| |
| static int acpi_battery_get_state(struct acpi_battery *battery) |
| { |
| int result = 0; |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x09, |
| (u8 *)&battery->voltage_now); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x0a, |
| (u8 *)&battery->current_now); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x0f, |
| (u8 *)&battery->capacity_now); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x16, |
| (u8 *)&battery->state); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| end: |
| return result; |
| } |
| |
| static int acpi_battery_get_alarm(struct acpi_battery *battery) |
| { |
| int result = 0; |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x01, |
| (u8 *)&battery->alarm_capacity); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| end: |
| |
| return result; |
| } |
| |
| static int acpi_battery_set_alarm(struct acpi_battery *battery, |
| unsigned long alarm) |
| { |
| int result = 0; |
| s16 battery_mode; |
| int foo; |
| |
| result = acpi_battery_select(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_select() failed")); |
| goto end; |
| } |
| |
| /* If necessary, enable the alarm */ |
| |
| if (alarm > 0) { |
| result = |
| acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x03, |
| (u8 *)&battery_mode); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| battery_mode &= 0xbfff; |
| result = |
| acpi_smbus_write(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x01, |
| (u8 *)&battery_mode, 2); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_write() failed")); |
| goto end; |
| } |
| } |
| |
| foo = alarm / (battery->mode ? 10 : 1); |
| result = acpi_smbus_write(battery->sbs->hc, SMBUS_READ_WORD, ACPI_SB_SMBUS_ADDR, 0x01, |
| (u8 *)&foo, 2); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_write() failed")); |
| goto end; |
| } |
| |
| end: |
| |
| return result; |
| } |
| |
| static int acpi_battery_set_mode(struct acpi_battery *battery) |
| { |
| int result = 0; |
| s16 battery_mode; |
| |
| if (mode == DEF_CAPACITY_UNIT) { |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
| ACPI_SB_SMBUS_ADDR, 0x03, (u8 *)&battery_mode); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| if (mode == MAH_CAPACITY_UNIT) { |
| battery_mode &= 0x7fff; |
| } else { |
| battery_mode |= 0x8000; |
| } |
| result = acpi_smbus_write(battery->sbs->hc, SMBUS_READ_WORD, |
| ACPI_SB_SMBUS_ADDR, 0x03, (u8 *)&battery_mode, 2); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_write() failed")); |
| goto end; |
| } |
| |
| result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, |
| ACPI_SB_SMBUS_ADDR, 0x03, (u8 *)&battery_mode); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| end: |
| return result; |
| } |
| |
| static int acpi_battery_init(struct acpi_battery *battery) |
| { |
| int result = 0; |
| |
| result = acpi_battery_select(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_select() failed")); |
| goto end; |
| } |
| |
| result = acpi_battery_set_mode(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_set_mode() failed")); |
| goto end; |
| } |
| |
| result = acpi_battery_get_info(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_info() failed")); |
| goto end; |
| } |
| |
| result = acpi_battery_get_state(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_state() failed")); |
| goto end; |
| } |
| |
| result = acpi_battery_get_alarm(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_alarm() failed")); |
| goto end; |
| } |
| |
| end: |
| return result; |
| } |
| |
| static int acpi_ac_get_present(struct acpi_sbs *sbs) |
| { |
| int result = 0; |
| s16 charger_status; |
| |
| result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBC_SMBUS_ADDR, 0x13, |
| (u8 *)&charger_status); |
| |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_smbus_read() failed")); |
| goto end; |
| } |
| |
| sbs->charger_present = (charger_status & 0x8000) >> 15; |
| |
| end: |
| |
| return result; |
| } |
| |
| /* -------------------------------------------------------------------------- |
| FS Interface (/proc/acpi) |
| -------------------------------------------------------------------------- */ |
| |
| /* Generic Routines */ |
| |
| static int |
| acpi_sbs_generic_add_fs(struct proc_dir_entry **dir, |
| struct proc_dir_entry *parent_dir, |
| char *dir_name, |
| struct file_operations *info_fops, |
| struct file_operations *state_fops, |
| struct file_operations *alarm_fops, void *data) |
| { |
| struct proc_dir_entry *entry = NULL; |
| |
| if (!*dir) { |
| *dir = proc_mkdir(dir_name, parent_dir); |
| if (!*dir) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "proc_mkdir() failed")); |
| return -ENODEV; |
| } |
| (*dir)->owner = THIS_MODULE; |
| } |
| |
| /* 'info' [R] */ |
| if (info_fops) { |
| entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir); |
| if (!entry) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "create_proc_entry() failed")); |
| } else { |
| entry->proc_fops = info_fops; |
| entry->data = data; |
| entry->owner = THIS_MODULE; |
| } |
| } |
| |
| /* 'state' [R] */ |
| if (state_fops) { |
| entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir); |
| if (!entry) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "create_proc_entry() failed")); |
| } else { |
| entry->proc_fops = state_fops; |
| entry->data = data; |
| entry->owner = THIS_MODULE; |
| } |
| } |
| |
| /* 'alarm' [R/W] */ |
| if (alarm_fops) { |
| entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir); |
| if (!entry) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "create_proc_entry() failed")); |
| } else { |
| entry->proc_fops = alarm_fops; |
| entry->data = data; |
| entry->owner = THIS_MODULE; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static void |
| acpi_sbs_generic_remove_fs(struct proc_dir_entry **dir, |
| struct proc_dir_entry *parent_dir) |
| { |
| |
| if (*dir) { |
| remove_proc_entry(ACPI_SBS_FILE_INFO, *dir); |
| remove_proc_entry(ACPI_SBS_FILE_STATE, *dir); |
| remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir); |
| remove_proc_entry((*dir)->name, parent_dir); |
| *dir = NULL; |
| } |
| |
| } |
| |
| /* Smart Battery Interface */ |
| |
| static struct proc_dir_entry *acpi_battery_dir = NULL; |
| |
| static int acpi_battery_read_info(struct seq_file *seq, void *offset) |
| { |
| struct acpi_battery *battery = seq->private; |
| struct acpi_sbs *sbs = battery->sbs; |
| int cscale; |
| int result = 0; |
| |
| if (sbs_mutex_lock(sbs)) { |
| return -ENODEV; |
| } |
| |
| result = acpi_check_update_proc(sbs); |
| if (result) |
| goto end; |
| |
| if (update_time == 0) { |
| result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_INFO); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_update_run() failed")); |
| } |
| } |
| |
| if (battery->present) { |
| seq_printf(seq, "present: yes\n"); |
| } else { |
| seq_printf(seq, "present: no\n"); |
| goto end; |
| } |
| |
| if (battery->mode) { |
| cscale = battery->vscale * battery->ipscale; |
| } else { |
| cscale = battery->ipscale; |
| } |
| seq_printf(seq, "design capacity: %i%s\n", |
| battery->design_capacity * cscale, |
| battery->mode ? "0 mWh" : " mAh"); |
| |
| seq_printf(seq, "last full capacity: %i%s\n", |
| battery->full_charge_capacity * cscale, |
| battery->mode ? "0 mWh" : " mAh"); |
| |
| seq_printf(seq, "battery technology: rechargeable\n"); |
| |
| seq_printf(seq, "design voltage: %i mV\n", |
| battery->design_voltage * battery->vscale); |
| |
| seq_printf(seq, "design capacity warning: unknown\n"); |
| seq_printf(seq, "design capacity low: unknown\n"); |
| seq_printf(seq, "capacity granularity 1: unknown\n"); |
| seq_printf(seq, "capacity granularity 2: unknown\n"); |
| |
| seq_printf(seq, "model number: %s\n", |
| battery->device_name); |
| |
| seq_printf(seq, "serial number: %i\n", |
| battery->serial_number); |
| |
| seq_printf(seq, "battery type: %s\n", |
| battery->device_chemistry); |
| |
| seq_printf(seq, "OEM info: %s\n", |
| battery->manufacturer_name); |
| |
| end: |
| |
| sbs_mutex_unlock(sbs); |
| |
| return result; |
| } |
| |
| static int acpi_battery_info_open_fs(struct inode *inode, struct file *file) |
| { |
| return single_open(file, acpi_battery_read_info, PDE(inode)->data); |
| } |
| |
| static int acpi_battery_read_state(struct seq_file *seq, void *offset) |
| { |
| struct acpi_battery *battery = seq->private; |
| struct acpi_sbs *sbs = battery->sbs; |
| int result = 0; |
| int cscale; |
| int foo; |
| |
| if (sbs_mutex_lock(sbs)) { |
| return -ENODEV; |
| } |
| |
| result = acpi_check_update_proc(sbs); |
| if (result) |
| goto end; |
| |
| if (update_time == 0) { |
| result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_STATE); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_update_run() failed")); |
| } |
| } |
| |
| if (battery->present) { |
| seq_printf(seq, "present: yes\n"); |
| } else { |
| seq_printf(seq, "present: no\n"); |
| goto end; |
| } |
| |
| if (battery->mode) { |
| cscale = battery->vscale * battery->ipscale; |
| } else { |
| cscale = battery->ipscale; |
| } |
| |
| if (battery->state & 0x0010) { |
| seq_printf(seq, "capacity state: critical\n"); |
| } else { |
| seq_printf(seq, "capacity state: ok\n"); |
| } |
| |
| foo = (s16) battery->current_now * battery->ipscale; |
| if (battery->mode) { |
| foo = foo * battery->design_voltage / 1000; |
| } |
| if (battery->current_now < 0) { |
| seq_printf(seq, "charging state: discharging\n"); |
| seq_printf(seq, "present rate: %d %s\n", |
| -foo, battery->mode ? "mW" : "mA"); |
| } else if (battery->current_now > 0) { |
| seq_printf(seq, "charging state: charging\n"); |
| seq_printf(seq, "present rate: %d %s\n", |
| foo, battery->mode ? "mW" : "mA"); |
| } else { |
| seq_printf(seq, "charging state: charged\n"); |
| seq_printf(seq, "present rate: 0 %s\n", |
| battery->mode ? "mW" : "mA"); |
| } |
| |
| seq_printf(seq, "remaining capacity: %i%s\n", |
| battery->capacity_now * cscale, |
| battery->mode ? "0 mWh" : " mAh"); |
| |
| seq_printf(seq, "present voltage: %i mV\n", |
| battery->voltage_now * battery->vscale); |
| |
| end: |
| |
| sbs_mutex_unlock(sbs); |
| |
| return result; |
| } |
| |
| static int acpi_battery_state_open_fs(struct inode *inode, struct file *file) |
| { |
| return single_open(file, acpi_battery_read_state, PDE(inode)->data); |
| } |
| |
| static int acpi_battery_read_alarm(struct seq_file *seq, void *offset) |
| { |
| struct acpi_battery *battery = seq->private; |
| struct acpi_sbs *sbs = battery->sbs; |
| int result = 0; |
| int cscale; |
| |
| if (sbs_mutex_lock(sbs)) { |
| return -ENODEV; |
| } |
| |
| result = acpi_check_update_proc(sbs); |
| if (result) |
| goto end; |
| |
| if (update_time == 0) { |
| result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_ALARM); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_update_run() failed")); |
| } |
| } |
| |
| if (!battery->present) { |
| seq_printf(seq, "present: no\n"); |
| goto end; |
| } |
| |
| if (battery->mode) { |
| cscale = battery->vscale * battery->ipscale; |
| } else { |
| cscale = battery->ipscale; |
| } |
| |
| seq_printf(seq, "alarm: "); |
| if (battery->alarm_capacity) { |
| seq_printf(seq, "%i%s\n", |
| battery->alarm_capacity * cscale, |
| battery->mode ? "0 mWh" : " mAh"); |
| } else { |
| seq_printf(seq, "disabled\n"); |
| } |
| |
| end: |
| |
| sbs_mutex_unlock(sbs); |
| |
| return result; |
| } |
| |
| static ssize_t |
| acpi_battery_write_alarm(struct file *file, const char __user * buffer, |
| size_t count, loff_t * ppos) |
| { |
| struct seq_file *seq = file->private_data; |
| struct acpi_battery *battery = seq->private; |
| struct acpi_sbs *sbs = battery->sbs; |
| char alarm_string[12] = { '\0' }; |
| int result, old_alarm, new_alarm; |
| |
| if (sbs_mutex_lock(sbs)) { |
| return -ENODEV; |
| } |
| |
| result = acpi_check_update_proc(sbs); |
| if (result) |
| goto end; |
| |
| if (!battery->present) { |
| result = -ENODEV; |
| goto end; |
| } |
| |
| if (count > sizeof(alarm_string) - 1) { |
| result = -EINVAL; |
| goto end; |
| } |
| |
| if (copy_from_user(alarm_string, buffer, count)) { |
| result = -EFAULT; |
| goto end; |
| } |
| |
| alarm_string[count] = 0; |
| |
| old_alarm = battery->alarm_capacity; |
| new_alarm = simple_strtoul(alarm_string, NULL, 0); |
| |
| result = acpi_battery_set_alarm(battery, new_alarm); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_set_alarm() failed")); |
| acpi_battery_set_alarm(battery, old_alarm); |
| goto end; |
| } |
| result = acpi_battery_get_alarm(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_alarm() failed")); |
| acpi_battery_set_alarm(battery, old_alarm); |
| goto end; |
| } |
| |
| end: |
| sbs_mutex_unlock(sbs); |
| |
| if (result) { |
| return result; |
| } else { |
| return count; |
| } |
| } |
| |
| static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file) |
| { |
| return single_open(file, acpi_battery_read_alarm, PDE(inode)->data); |
| } |
| |
| static struct file_operations acpi_battery_info_fops = { |
| .open = acpi_battery_info_open_fs, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .owner = THIS_MODULE, |
| }; |
| |
| static struct file_operations acpi_battery_state_fops = { |
| .open = acpi_battery_state_open_fs, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .owner = THIS_MODULE, |
| }; |
| |
| static struct file_operations acpi_battery_alarm_fops = { |
| .open = acpi_battery_alarm_open_fs, |
| .read = seq_read, |
| .write = acpi_battery_write_alarm, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .owner = THIS_MODULE, |
| }; |
| |
| /* Legacy AC Adapter Interface */ |
| |
| static struct proc_dir_entry *acpi_ac_dir = NULL; |
| |
| static int acpi_ac_read_state(struct seq_file *seq, void *offset) |
| { |
| struct acpi_sbs *sbs = seq->private; |
| int result; |
| |
| if (sbs_mutex_lock(sbs)) { |
| return -ENODEV; |
| } |
| |
| if (update_time == 0) { |
| result = acpi_sbs_update_run(sbs, -1, DATA_TYPE_AC_STATE); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_update_run() failed")); |
| } |
| } |
| |
| seq_printf(seq, "state: %s\n", |
| sbs->charger_present ? "on-line" : "off-line"); |
| |
| sbs_mutex_unlock(sbs); |
| |
| return 0; |
| } |
| |
| static int acpi_ac_state_open_fs(struct inode *inode, struct file *file) |
| { |
| return single_open(file, acpi_ac_read_state, PDE(inode)->data); |
| } |
| |
| static struct file_operations acpi_ac_state_fops = { |
| .open = acpi_ac_state_open_fs, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| .owner = THIS_MODULE, |
| }; |
| |
| /* -------------------------------------------------------------------------- |
| Driver Interface |
| -------------------------------------------------------------------------- */ |
| |
| /* Smart Battery */ |
| |
| static int acpi_battery_add(struct acpi_sbs *sbs, int id) |
| { |
| int is_present; |
| int result; |
| char dir_name[32]; |
| struct acpi_battery *battery; |
| |
| battery = &sbs->battery[id]; |
| |
| battery->alive = 0; |
| |
| battery->init_state = 0; |
| battery->id = id; |
| battery->sbs = sbs; |
| |
| result = acpi_battery_select(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_select() failed")); |
| goto end; |
| } |
| |
| result = acpi_battery_get_present(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_present() failed")); |
| goto end; |
| } |
| |
| is_present = battery->present; |
| |
| if (is_present) { |
| result = acpi_battery_init(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_init() failed")); |
| goto end; |
| } |
| battery->init_state = 1; |
| } |
| |
| sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id); |
| |
| result = acpi_sbs_generic_add_fs(&battery->proc_entry, |
| acpi_battery_dir, |
| dir_name, |
| &acpi_battery_info_fops, |
| &acpi_battery_state_fops, |
| &acpi_battery_alarm_fops, battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_generic_add_fs() failed")); |
| goto end; |
| } |
| battery->alive = 1; |
| |
| printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n", |
| ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), dir_name, |
| sbs->battery->present ? "present" : "absent"); |
| |
| end: |
| return result; |
| } |
| |
| static void acpi_battery_remove(struct acpi_sbs *sbs, int id) |
| { |
| |
| if (sbs->battery[id].proc_entry) { |
| acpi_sbs_generic_remove_fs(&(sbs->battery[id].proc_entry), |
| acpi_battery_dir); |
| } |
| } |
| |
| static int acpi_ac_add(struct acpi_sbs *sbs) |
| { |
| int result; |
| |
| result = acpi_ac_get_present(sbs); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_ac_get_present() failed")); |
| goto end; |
| } |
| |
| result = acpi_sbs_generic_add_fs(&sbs->ac_entry, |
| acpi_ac_dir, |
| ACPI_AC_DIR_NAME, |
| NULL, &acpi_ac_state_fops, NULL, sbs); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_generic_add_fs() failed")); |
| goto end; |
| } |
| |
| printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n", |
| ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), |
| ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line"); |
| |
| end: |
| |
| return result; |
| } |
| |
| static void acpi_ac_remove(struct acpi_sbs *sbs) |
| { |
| |
| if (sbs->ac_entry) { |
| acpi_sbs_generic_remove_fs(&sbs->ac_entry, acpi_ac_dir); |
| } |
| } |
| |
| static void acpi_sbs_update_time_run(unsigned long data) |
| { |
| acpi_os_execute(OSL_GPE_HANDLER, acpi_sbs_update_time, (void *)data); |
| } |
| |
| static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type) |
| { |
| struct acpi_battery *battery; |
| int result = 0, cnt; |
| int old_ac_present = -1; |
| int old_present = -1; |
| int new_ac_present = -1; |
| int new_present = -1; |
| int id_min = 0, id_max = MAX_SBS_BAT - 1; |
| char dir_name[32]; |
| int do_battery_init = 0, do_ac_init = 0; |
| int old_remaining_capacity = 0; |
| int update_battery = 1; |
| int up_tm = update_time; |
| |
| if (sbs_zombie(sbs)) { |
| goto end; |
| } |
| |
| if (id >= 0) { |
| id_min = id_max = id; |
| } |
| |
| if (data_type == DATA_TYPE_COMMON && up_tm > 0) { |
| cnt = up_tm / (up_tm > UPDATE_DELAY ? UPDATE_DELAY : up_tm); |
| if (sbs->run_cnt % cnt != 0) { |
| update_battery = 0; |
| } |
| } |
| |
| sbs->run_cnt++; |
| |
| if (!update_battery) { |
| goto end; |
| } |
| |
| old_ac_present = sbs->charger_present; |
| |
| result = acpi_ac_get_present(sbs); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_ac_get_present() failed")); |
| } |
| |
| new_ac_present = sbs->charger_present; |
| |
| do_ac_init = (old_ac_present != new_ac_present); |
| if (sbs->run_cnt == 1 && data_type == DATA_TYPE_COMMON) { |
| do_ac_init = 1; |
| } |
| |
| if (do_ac_init) { |
| result = acpi_bus_generate_proc_event4(ACPI_AC_CLASS, |
| ACPI_AC_DIR_NAME, |
| ACPI_SBS_AC_NOTIFY_STATUS, |
| new_ac_present); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_bus_generate_event4() failed")); |
| } |
| acpi_bus_generate_netlink_event(ACPI_AC_CLASS, ACPI_AC_DIR_NAME, |
| ACPI_SBS_AC_NOTIFY_STATUS, |
| new_ac_present); |
| } |
| |
| if (data_type == DATA_TYPE_COMMON) { |
| if (!do_ac_init && !update_battery) { |
| goto end; |
| } |
| } |
| |
| if (data_type == DATA_TYPE_AC_STATE && !do_ac_init) { |
| goto end; |
| } |
| |
| for (id = id_min; id <= id_max; id++) { |
| battery = &sbs->battery[id]; |
| if (battery->alive == 0) { |
| continue; |
| } |
| |
| old_remaining_capacity = battery->capacity_now; |
| |
| old_present = battery->present; |
| |
| result = acpi_battery_select(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_select() failed")); |
| } |
| |
| result = acpi_battery_get_present(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_present() failed")); |
| } |
| |
| new_present = battery->present; |
| |
| do_battery_init = ((old_present != new_present) |
| && new_present); |
| if (!new_present) |
| goto event; |
| if (do_ac_init || do_battery_init) { |
| result = acpi_battery_init(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_init() " |
| "failed")); |
| } |
| } |
| if (sbs_zombie(sbs)) { |
| goto end; |
| } |
| |
| if ((data_type == DATA_TYPE_COMMON |
| || data_type == DATA_TYPE_INFO) |
| && new_present) { |
| result = acpi_battery_get_info(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_info() failed")); |
| } |
| } |
| if (data_type == DATA_TYPE_INFO) { |
| continue; |
| } |
| if (sbs_zombie(sbs)) { |
| goto end; |
| } |
| |
| if ((data_type == DATA_TYPE_COMMON |
| || data_type == DATA_TYPE_STATE) |
| && new_present) { |
| result = acpi_battery_get_state(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_state() failed")); |
| } |
| } |
| if (data_type == DATA_TYPE_STATE) { |
| goto event; |
| } |
| if (sbs_zombie(sbs)) { |
| goto end; |
| } |
| |
| if ((data_type == DATA_TYPE_COMMON |
| || data_type == DATA_TYPE_ALARM) |
| && new_present) { |
| result = acpi_battery_get_alarm(battery); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_get_alarm() " |
| "failed")); |
| } |
| } |
| if (data_type == DATA_TYPE_ALARM) { |
| continue; |
| } |
| if (sbs_zombie(sbs)) { |
| goto end; |
| } |
| |
| event: |
| |
| if (old_present != new_present || do_ac_init || |
| old_remaining_capacity != |
| battery->capacity_now) { |
| sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id); |
| result = acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS, |
| dir_name, |
| ACPI_SBS_BATTERY_NOTIFY_STATUS, |
| new_present); |
| acpi_bus_generate_netlink_event(ACPI_BATTERY_CLASS, dir_name, |
| ACPI_SBS_BATTERY_NOTIFY_STATUS, |
| new_present); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_bus_generate_proc_event4() " |
| "failed")); |
| } |
| } |
| } |
| |
| end: |
| |
| return result; |
| } |
| |
| static void acpi_sbs_update_time(void *data) |
| { |
| struct acpi_sbs *sbs = data; |
| unsigned long delay = -1; |
| int result; |
| unsigned int up_tm = update_time; |
| |
| if (sbs_mutex_lock(sbs)) |
| return; |
| |
| result = acpi_sbs_update_run(sbs, -1, DATA_TYPE_COMMON); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_update_run() failed")); |
| } |
| |
| if (sbs_zombie(sbs)) { |
| goto end; |
| } |
| |
| if (!up_tm) { |
| if (timer_pending(&sbs->update_timer)) |
| del_timer(&sbs->update_timer); |
| } else { |
| delay = (up_tm > UPDATE_DELAY ? UPDATE_DELAY : up_tm); |
| delay = jiffies + HZ * delay; |
| if (timer_pending(&sbs->update_timer)) { |
| mod_timer(&sbs->update_timer, delay); |
| } else { |
| sbs->update_timer.data = (unsigned long)data; |
| sbs->update_timer.function = acpi_sbs_update_time_run; |
| sbs->update_timer.expires = delay; |
| add_timer(&sbs->update_timer); |
| } |
| } |
| |
| end: |
| |
| sbs_mutex_unlock(sbs); |
| } |
| |
| static int acpi_sbs_add(struct acpi_device *device) |
| { |
| struct acpi_sbs *sbs = NULL; |
| int result = 0, remove_result = 0; |
| int id; |
| |
| sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL); |
| if (!sbs) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, "kzalloc() failed")); |
| result = -ENOMEM; |
| goto end; |
| } |
| |
| mutex_init(&sbs->mutex); |
| |
| sbs_mutex_lock(sbs); |
| |
| sbs->device = device; |
| sbs->hc = acpi_driver_data(device->parent); |
| |
| strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME); |
| strcpy(acpi_device_class(device), ACPI_SBS_CLASS); |
| acpi_driver_data(device) = sbs; |
| |
| result = acpi_ac_add(sbs); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, "acpi_ac_add() failed")); |
| goto end; |
| } |
| |
| acpi_sbsm_get_info(sbs); |
| |
| if (!sbs->manager_present) { |
| result = acpi_battery_add(sbs, 0); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_add() failed")); |
| goto end; |
| } |
| } else { |
| for (id = 0; id < MAX_SBS_BAT; id++) { |
| if ((sbs->batteries_supported & (1 << id))) { |
| result = acpi_battery_add(sbs, id); |
| if (result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_battery_add() failed")); |
| goto end; |
| } |
| } |
| } |
| } |
| |
| init_timer(&sbs->update_timer); |
| result = acpi_check_update_proc(sbs); |
| if (result) |
| goto end; |
| |
| end: |
| |
| sbs_mutex_unlock(sbs); |
| |
| if (result) { |
| remove_result = acpi_sbs_remove(device, 0); |
| if (remove_result) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_sbs_remove() failed")); |
| } |
| } |
| |
| return result; |
| } |
| |
| static int acpi_sbs_remove(struct acpi_device *device, int type) |
| { |
| struct acpi_sbs *sbs; |
| int id; |
| |
| if (!device) { |
| return -EINVAL; |
| } |
| |
| sbs = acpi_driver_data(device); |
| if (!sbs) { |
| return -EINVAL; |
| } |
| |
| sbs_mutex_lock(sbs); |
| |
| sbs->zombie = 1; |
| del_timer_sync(&sbs->update_timer); |
| acpi_os_wait_events_complete(NULL); |
| del_timer_sync(&sbs->update_timer); |
| |
| for (id = 0; id < MAX_SBS_BAT; id++) { |
| acpi_battery_remove(sbs, id); |
| } |
| |
| acpi_ac_remove(sbs); |
| |
| sbs_mutex_unlock(sbs); |
| |
| mutex_destroy(&sbs->mutex); |
| |
| kfree(sbs); |
| |
| return 0; |
| } |
| |
| static void acpi_sbs_rmdirs(void) |
| { |
| if (acpi_ac_dir) { |
| acpi_unlock_ac_dir(acpi_ac_dir); |
| acpi_ac_dir = NULL; |
| } |
| if (acpi_battery_dir) { |
| acpi_unlock_battery_dir(acpi_battery_dir); |
| acpi_battery_dir = NULL; |
| } |
| } |
| |
| static int acpi_sbs_resume(struct acpi_device *device) |
| { |
| struct acpi_sbs *sbs; |
| |
| if (!device) |
| return -EINVAL; |
| |
| sbs = device->driver_data; |
| |
| sbs->run_cnt = 0; |
| |
| return 0; |
| } |
| |
| static int __init acpi_sbs_init(void) |
| { |
| int result = 0; |
| |
| if (acpi_disabled) |
| return -ENODEV; |
| |
| if (mode != DEF_CAPACITY_UNIT |
| && mode != MAH_CAPACITY_UNIT |
| && mode != MWH_CAPACITY_UNIT) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "invalid mode = %d", mode)); |
| return -EINVAL; |
| } |
| |
| acpi_ac_dir = acpi_lock_ac_dir(); |
| if (!acpi_ac_dir) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_lock_ac_dir() failed")); |
| return -ENODEV; |
| } |
| |
| acpi_battery_dir = acpi_lock_battery_dir(); |
| if (!acpi_battery_dir) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_lock_battery_dir() failed")); |
| acpi_sbs_rmdirs(); |
| return -ENODEV; |
| } |
| |
| result = acpi_bus_register_driver(&acpi_sbs_driver); |
| if (result < 0) { |
| ACPI_EXCEPTION((AE_INFO, AE_ERROR, |
| "acpi_bus_register_driver() failed")); |
| acpi_sbs_rmdirs(); |
| return -ENODEV; |
| } |
| |
| return 0; |
| } |
| |
| static void __exit acpi_sbs_exit(void) |
| { |
| acpi_bus_unregister_driver(&acpi_sbs_driver); |
| |
| acpi_sbs_rmdirs(); |
| |
| return; |
| } |
| |
| module_init(acpi_sbs_init); |
| module_exit(acpi_sbs_exit); |