include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[linux-2.6.git] / drivers / acpi / sbs.c
index 974d00c..4ff76e8 100644 (file)
@@ -1,6 +1,8 @@
 /*
- *  acpi_sbs.c - ACPI Smart Battery System Driver ($Revision: 1.16 $)
+ *  sbs.c - ACPI Smart Battery System Driver ($Revision: 2.0 $)
  *
+ *  Copyright (c) 2007 Alexey Starikovskiy <astarikovskiy@suse.de>
+ *  Copyright (c) 2005-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com>
  *  Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu>
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/kernel.h>
+
+#ifdef CONFIG_ACPI_PROCFS_POWER
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <asm/uaccess.h>
+#endif
+
 #include <linux/acpi.h>
 #include <linux/timer.h>
 #include <linux/jiffies.h>
 #include <linux/delay.h>
 
-#define ACPI_SBS_COMPONENT             0x00080000
+#ifdef CONFIG_ACPI_SYSFS_POWER
+#include <linux/power_supply.h>
+#endif
+
+#include "sbshc.h"
+
+#define PREFIX "ACPI: "
+
 #define ACPI_SBS_CLASS                 "sbs"
 #define ACPI_AC_CLASS                  "ac_adapter"
 #define ACPI_BATTERY_CLASS             "battery"
-#define ACPI_SBS_HID                   "ACPI0002"
 #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
+#define ACPI_SBS_NOTIFY_STATUS         0x80
+#define ACPI_SBS_NOTIFY_INFO           0x81
 
-ACPI_MODULE_NAME("sbs");
-
-MODULE_AUTHOR("Rich Townsend");
+MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>");
 MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
 MODULE_LICENSE("GPL");
 
-#define        xmsleep(t)      msleep(t)
-
-#define ACPI_EC_SMB_PRTCL      0x00    /* protocol, PEC */
-
-#define ACPI_EC_SMB_STS                0x01    /* status */
-#define ACPI_EC_SMB_ADDR       0x02    /* address */
-#define ACPI_EC_SMB_CMD                0x03    /* command */
-#define ACPI_EC_SMB_DATA       0x04    /* 32 data registers */
-#define ACPI_EC_SMB_BCNT       0x24    /* number of data bytes */
-
-#define ACPI_EC_SMB_STS_DONE   0x80
-#define ACPI_EC_SMB_STS_STATUS 0x1f
-
-#define ACPI_EC_SMB_PRTCL_WRITE                0x00
-#define ACPI_EC_SMB_PRTCL_READ         0x01
-#define ACPI_EC_SMB_PRTCL_WORD_DATA    0x08
-#define ACPI_EC_SMB_PRTCL_BLOCK_DATA   0x0a
-
-#define ACPI_EC_SMB_TRANSACTION_SLEEP  1
-#define ACPI_EC_SMB_ACCESS_SLEEP1      1
-#define ACPI_EC_SMB_ACCESS_SLEEP2      10
-
-#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
+static unsigned int cache_time = 1000;
+module_param(cache_time, uint, 0644);
+MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
 
 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 MAX_SBS_BAT                    4
 #define ACPI_SBS_BLOCK_MAX             32
 
-#define ACPI_SBS_SMBUS_READ            1
-#define ACPI_SBS_SMBUS_WRITE           2
-
-#define ACPI_SBS_WORD_DATA             1
-#define ACPI_SBS_BLOCK_DATA            2
-
-#define        UPDATE_DELAY    10
-
-/* 0 - every time, > 0 - by update_time */
-static unsigned int update_time = 120;
-
-static unsigned int capacity_mode = CAPACITY_UNIT;
-
-module_param(update_time, uint, 0644);
-module_param(capacity_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 struct acpi_driver acpi_sbs_driver = {
-       .name = "sbs",
-       .class = ACPI_SBS_CLASS,
-       .ids = "ACPI0001,ACPI0005",
-       .ops = {
-               .add = acpi_sbs_add,
-               .remove = acpi_sbs_remove,
-               .resume = acpi_sbs_resume,
-               },
-};
-
-struct acpi_ac {
-       int ac_present;
-};
-
-struct acpi_battery_info {
-       int capacity_mode;
-       s16 full_charge_capacity;
-       s16 design_capacity;
-       s16 design_voltage;
-       int vscale;
-       int ipscale;
-       s16 serial_number;
-       char manufacturer_name[ACPI_SBS_BLOCK_MAX + 3];
-       char device_name[ACPI_SBS_BLOCK_MAX + 3];
-       char device_chemistry[ACPI_SBS_BLOCK_MAX + 3];
-};
-
-struct acpi_battery_state {
-       s16 voltage;
-       s16 amperage;
-       s16 remaining_capacity;
-       s16 battery_state;
-};
-
-struct acpi_battery_alarm {
-       s16 remaining_capacity;
+static const struct acpi_device_id sbs_device_ids[] = {
+       {"ACPI0002", 0},
+       {"", 0},
 };
+MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
 
 struct acpi_battery {
-       int alive;
-       int id;
-       int init_state;
-       int battery_present;
+#ifdef CONFIG_ACPI_SYSFS_POWER
+       struct power_supply bat;
+#endif
        struct acpi_sbs *sbs;
-       struct acpi_battery_info info;
-       struct acpi_battery_state state;
-       struct acpi_battery_alarm alarm;
-       struct proc_dir_entry *battery_entry;
+#ifdef CONFIG_ACPI_PROCFS_POWER
+       struct proc_dir_entry *proc_entry;
+#endif
+       unsigned long update_time;
+       char name[8];
+       char manufacturer_name[ACPI_SBS_BLOCK_MAX];
+       char device_name[ACPI_SBS_BLOCK_MAX];
+       char device_chemistry[ACPI_SBS_BLOCK_MAX];
+       u16 alarm_capacity;
+       u16 full_charge_capacity;
+       u16 design_capacity;
+       u16 design_voltage;
+       u16 serial_number;
+       u16 cycle_count;
+       u16 temp_now;
+       u16 voltage_now;
+       s16 rate_now;
+       s16 rate_avg;
+       u16 capacity_now;
+       u16 state_of_charge;
+       u16 state;
+       u16 mode;
+       u16 spec;
+       u8 id;
+       u8 present:1;
+       u8 have_sysfs_alarm:1;
 };
 
+#define to_acpi_battery(x) container_of(x, struct acpi_battery, bat);
+
 struct acpi_sbs {
-       int base;
+#ifdef CONFIG_ACPI_SYSFS_POWER
+       struct power_supply charger;
+#endif
        struct acpi_device *device;
-       struct mutex mutex;
-       int sbsm_present;
-       int sbsm_batteries_supported;
-       struct proc_dir_entry *ac_entry;
-       struct acpi_ac ac;
+       struct acpi_smb_hc *hc;
+       struct mutex lock;
+#ifdef CONFIG_ACPI_PROCFS_POWER
+       struct proc_dir_entry *charger_entry;
+#endif
        struct acpi_battery battery[MAX_SBS_BAT];
-       int zombie;
-       struct timer_list update_timer;
-       int run_cnt;
-       int update_proc_flg;
-};
-
-static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type);
-static void acpi_sbs_update_time(void *data);
-
-union sbs_rw_data {
-       u16 word;
-       u8 block[ACPI_SBS_BLOCK_MAX + 2];
+       u8 batteries_supported:4;
+       u8 manager_present:1;
+       u8 charger_present:1;
 };
 
-static int acpi_ec_sbs_access(struct acpi_sbs *sbs, u16 addr,
-                             char read_write, u8 command, int size,
-                             union sbs_rw_data *data);
+#define to_acpi_sbs(x) container_of(x, struct acpi_sbs, charger)
 
-/* --------------------------------------------------------------------------
-                               SMBus Communication
-   -------------------------------------------------------------------------- */
-
-static int acpi_ec_sbs_read(struct acpi_sbs *sbs, u8 address, u8 * data)
+static inline int battery_scale(int log)
 {
-       u8 val;
-       int err;
-
-       err = ec_read(sbs->base + address, &val);
-       if (!err) {
-               *data = val;
-       }
-       xmsleep(ACPI_EC_SMB_TRANSACTION_SLEEP);
-       return (err);
+       int scale = 1;
+       while (log--)
+               scale *= 10;
+       return scale;
 }
 
-static int acpi_ec_sbs_write(struct acpi_sbs *sbs, u8 address, u8 data)
+static inline int acpi_battery_vscale(struct acpi_battery *battery)
 {
-       int err;
-
-       err = ec_write(sbs->base + address, data);
-       return (err);
+       return battery_scale((battery->spec & 0x0f00) >> 8);
 }
 
-static int
-acpi_ec_sbs_access(struct acpi_sbs *sbs, u16 addr,
-                  char read_write, u8 command, int size,
-                  union sbs_rw_data *data)
+static inline int acpi_battery_ipscale(struct acpi_battery *battery)
 {
-       unsigned char protocol, len = 0, temp[2] = { 0, 0 };
-       int i;
-
-       if (read_write == ACPI_SBS_SMBUS_READ) {
-               protocol = ACPI_EC_SMB_PRTCL_READ;
-       } else {
-               protocol = ACPI_EC_SMB_PRTCL_WRITE;
-       }
-
-       switch (size) {
-
-       case ACPI_SBS_WORD_DATA:
-               acpi_ec_sbs_write(sbs, ACPI_EC_SMB_CMD, command);
-               if (read_write == ACPI_SBS_SMBUS_WRITE) {
-                       acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA, data->word);
-                       acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA + 1,
-                                         data->word >> 8);
-               }
-               protocol |= ACPI_EC_SMB_PRTCL_WORD_DATA;
-               break;
-       case ACPI_SBS_BLOCK_DATA:
-               acpi_ec_sbs_write(sbs, ACPI_EC_SMB_CMD, command);
-               if (read_write == ACPI_SBS_SMBUS_WRITE) {
-                       len = min_t(u8, data->block[0], 32);
-                       acpi_ec_sbs_write(sbs, ACPI_EC_SMB_BCNT, len);
-                       for (i = 0; i < len; i++)
-                               acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA + i,
-                                                 data->block[i + 1]);
-               }
-               protocol |= ACPI_EC_SMB_PRTCL_BLOCK_DATA;
-               break;
-       default:
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "unsupported transaction %d", size));
-               return (-1);
-       }
-
-       acpi_ec_sbs_write(sbs, ACPI_EC_SMB_ADDR, addr << 1);
-       acpi_ec_sbs_write(sbs, ACPI_EC_SMB_PRTCL, protocol);
-
-       acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
-
-       if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
-               xmsleep(ACPI_EC_SMB_ACCESS_SLEEP1);
-               acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
-       }
-       if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
-               xmsleep(ACPI_EC_SMB_ACCESS_SLEEP2);
-               acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
-       }
-       if ((~temp[0] & ACPI_EC_SMB_STS_DONE)
-           || (temp[0] & ACPI_EC_SMB_STS_STATUS)) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "transaction %d error", size));
-               return (-1);
-       }
-
-       if (read_write == ACPI_SBS_SMBUS_WRITE) {
-               return (0);
-       }
-
-       switch (size) {
-
-       case ACPI_SBS_WORD_DATA:
-               acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA, temp);
-               acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA + 1, temp + 1);
-               data->word = (temp[1] << 8) | temp[0];
-               break;
-
-       case ACPI_SBS_BLOCK_DATA:
-               len = 0;
-               acpi_ec_sbs_read(sbs, ACPI_EC_SMB_BCNT, &len);
-               len = min_t(u8, len, 32);
-               for (i = 0; i < len; i++)
-                       acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA + i,
-                                        data->block + i + 1);
-               data->block[0] = len;
-               break;
-       default:
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "unsupported transaction %d", size));
-               return (-1);
-       }
-
-       return (0);
-}
-
-static int
-acpi_sbs_read_word(struct acpi_sbs *sbs, int addr, int func, u16 * word)
-{
-       union sbs_rw_data data;
-       int result = 0;
-
-       result = acpi_ec_sbs_access(sbs, addr,
-                                   ACPI_SBS_SMBUS_READ, func,
-                                   ACPI_SBS_WORD_DATA, &data);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_ec_sbs_access() failed"));
-       } else {
-               *word = data.word;
-       }
-
-       return result;
-}
-
-static int
-acpi_sbs_read_str(struct acpi_sbs *sbs, int addr, int func, char *str)
-{
-       union sbs_rw_data data;
-       int result = 0;
-
-       result = acpi_ec_sbs_access(sbs, addr,
-                                   ACPI_SBS_SMBUS_READ, func,
-                                   ACPI_SBS_BLOCK_DATA, &data);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_ec_sbs_access() failed"));
-       } else {
-               strncpy(str, (const char *)data.block + 1, data.block[0]);
-               str[data.block[0]] = 0;
-       }
-
-       return result;
+       return battery_scale((battery->spec & 0xf000) >> 12);
 }
 
-static int
-acpi_sbs_write_word(struct acpi_sbs *sbs, int addr, int func, int word)
+static inline int acpi_battery_mode(struct acpi_battery *battery)
 {
-       union sbs_rw_data data;
-       int result = 0;
-
-       data.word = word;
-
-       result = acpi_ec_sbs_access(sbs, addr,
-                                   ACPI_SBS_SMBUS_WRITE, func,
-                                   ACPI_SBS_WORD_DATA, &data);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_ec_sbs_access() failed"));
-       }
-
-       return result;
+       return (battery->mode & 0x8000);
 }
 
-static int sbs_zombie(struct acpi_sbs *sbs)
+static inline int acpi_battery_scale(struct acpi_battery *battery)
 {
-       return (sbs->zombie);
+       return (acpi_battery_mode(battery) ? 10 : 1) *
+           acpi_battery_ipscale(battery);
 }
 
-static int sbs_mutex_lock(struct acpi_sbs *sbs)
+#ifdef CONFIG_ACPI_SYSFS_POWER
+static int sbs_get_ac_property(struct power_supply *psy,
+                              enum power_supply_property psp,
+                              union power_supply_propval *val)
 {
-       if (sbs_zombie(sbs)) {
-               return -ENODEV;
+       struct acpi_sbs *sbs = to_acpi_sbs(psy);
+       switch (psp) {
+       case POWER_SUPPLY_PROP_ONLINE:
+               val->intval = sbs->charger_present;
+               break;
+       default:
+               return -EINVAL;
        }
-       mutex_lock(&sbs->mutex);
        return 0;
 }
 
-static void sbs_mutex_unlock(struct acpi_sbs *sbs)
+static int acpi_battery_technology(struct acpi_battery *battery)
 {
-       mutex_unlock(&sbs->mutex);
+       if (!strcasecmp("NiCd", battery->device_chemistry))
+               return POWER_SUPPLY_TECHNOLOGY_NiCd;
+       if (!strcasecmp("NiMH", battery->device_chemistry))
+               return POWER_SUPPLY_TECHNOLOGY_NiMH;
+       if (!strcasecmp("LION", battery->device_chemistry))
+               return POWER_SUPPLY_TECHNOLOGY_LION;
+       if (!strcasecmp("LiP", battery->device_chemistry))
+               return POWER_SUPPLY_TECHNOLOGY_LIPO;
+       return POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
 }
 
-/* --------------------------------------------------------------------------
-                            Smart Battery System Management
-   -------------------------------------------------------------------------- */
-
-static int acpi_check_update_proc(struct acpi_sbs *sbs)
+static int acpi_sbs_battery_get_property(struct power_supply *psy,
+                                        enum power_supply_property psp,
+                                        union power_supply_propval *val)
 {
-       acpi_status status = AE_OK;
+       struct acpi_battery *battery = to_acpi_battery(psy);
 
-       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;
+       if ((!battery->present) && psp != POWER_SUPPLY_PROP_PRESENT)
+               return -ENODEV;
+       switch (psp) {
+       case POWER_SUPPLY_PROP_STATUS:
+               if (battery->rate_now < 0)
+                       val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
+               else if (battery->rate_now > 0)
+                       val->intval = POWER_SUPPLY_STATUS_CHARGING;
+               else
+                       val->intval = POWER_SUPPLY_STATUS_FULL;
+               break;
+       case POWER_SUPPLY_PROP_PRESENT:
+               val->intval = battery->present;
+               break;
+       case POWER_SUPPLY_PROP_TECHNOLOGY:
+               val->intval = acpi_battery_technology(battery);
+               break;
+       case POWER_SUPPLY_PROP_CYCLE_COUNT:
+               val->intval = battery->cycle_count;
+               break;
+       case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+               val->intval = battery->design_voltage *
+                       acpi_battery_vscale(battery) * 1000;
+               break;
+       case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+               val->intval = battery->voltage_now *
+                               acpi_battery_vscale(battery) * 1000;
+               break;
+       case POWER_SUPPLY_PROP_CURRENT_NOW:
+       case POWER_SUPPLY_PROP_POWER_NOW:
+               val->intval = abs(battery->rate_now) *
+                               acpi_battery_ipscale(battery) * 1000;
+               break;
+       case POWER_SUPPLY_PROP_CURRENT_AVG:
+       case POWER_SUPPLY_PROP_POWER_AVG:
+               val->intval = abs(battery->rate_avg) *
+                               acpi_battery_ipscale(battery) * 1000;
+               break;
+       case POWER_SUPPLY_PROP_CAPACITY:
+               val->intval = battery->state_of_charge;
+               break;
+       case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+       case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
+               val->intval = battery->design_capacity *
+                       acpi_battery_scale(battery) * 1000;
+               break;
+       case POWER_SUPPLY_PROP_CHARGE_FULL:
+       case POWER_SUPPLY_PROP_ENERGY_FULL:
+               val->intval = battery->full_charge_capacity *
+                       acpi_battery_scale(battery) * 1000;
+               break;
+       case POWER_SUPPLY_PROP_CHARGE_NOW:
+       case POWER_SUPPLY_PROP_ENERGY_NOW:
+               val->intval = battery->capacity_now *
+                               acpi_battery_scale(battery) * 1000;
+               break;
+       case POWER_SUPPLY_PROP_TEMP:
+               val->intval = battery->temp_now - 2730; // dK -> dC
+               break;
+       case POWER_SUPPLY_PROP_MODEL_NAME:
+               val->strval = battery->device_name;
+               break;
+       case POWER_SUPPLY_PROP_MANUFACTURER:
+               val->strval = battery->manufacturer_name;
+               break;
+       default:
+               return -EINVAL;
        }
        return 0;
 }
 
-static int acpi_sbs_generate_event(struct acpi_device *device,
-                                  int event, int state, char *bid, char *class)
-{
-       char bid_saved[5];
-       char class_saved[20];
-       int result = 0;
-
-       strcpy(bid_saved, acpi_device_bid(device));
-       strcpy(class_saved, acpi_device_class(device));
-
-       strcpy(acpi_device_bid(device), bid);
-       strcpy(acpi_device_class(device), class);
-
-       result = acpi_bus_generate_event(device, event, state);
-
-       strcpy(acpi_device_bid(device), bid_saved);
-       strcpy(acpi_device_class(device), class_saved);
-
-       return result;
-}
-
-static int acpi_battery_get_present(struct acpi_battery *battery)
-{
-       s16 state;
-       int result = 0;
-       int is_present = 0;
-
-       result = acpi_sbs_read_word(battery->sbs,
-                                   ACPI_SBSM_SMBUS_ADDR, 0x01, &state);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-       }
-       if (!result) {
-               is_present = (state & 0x000f) & (1 << battery->id);
-       }
-       battery->battery_present = is_present;
+static enum power_supply_property sbs_ac_props[] = {
+       POWER_SUPPLY_PROP_ONLINE,
+};
 
-       return result;
-}
+static enum power_supply_property sbs_charge_battery_props[] = {
+       POWER_SUPPLY_PROP_STATUS,
+       POWER_SUPPLY_PROP_PRESENT,
+       POWER_SUPPLY_PROP_TECHNOLOGY,
+       POWER_SUPPLY_PROP_CYCLE_COUNT,
+       POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+       POWER_SUPPLY_PROP_VOLTAGE_NOW,
+       POWER_SUPPLY_PROP_CURRENT_NOW,
+       POWER_SUPPLY_PROP_CURRENT_AVG,
+       POWER_SUPPLY_PROP_CAPACITY,
+       POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+       POWER_SUPPLY_PROP_CHARGE_FULL,
+       POWER_SUPPLY_PROP_CHARGE_NOW,
+       POWER_SUPPLY_PROP_TEMP,
+       POWER_SUPPLY_PROP_MODEL_NAME,
+       POWER_SUPPLY_PROP_MANUFACTURER,
+};
 
-static int acpi_battery_select(struct acpi_battery *battery)
-{
-       struct acpi_sbs *sbs = battery->sbs;
-       int result = 0;
-       s16 state;
-       int foo;
+static enum power_supply_property sbs_energy_battery_props[] = {
+       POWER_SUPPLY_PROP_STATUS,
+       POWER_SUPPLY_PROP_PRESENT,
+       POWER_SUPPLY_PROP_TECHNOLOGY,
+       POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+       POWER_SUPPLY_PROP_VOLTAGE_NOW,
+       POWER_SUPPLY_PROP_CURRENT_NOW,
+       POWER_SUPPLY_PROP_CURRENT_AVG,
+       POWER_SUPPLY_PROP_POWER_NOW,
+       POWER_SUPPLY_PROP_POWER_AVG,
+       POWER_SUPPLY_PROP_CAPACITY,
+       POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
+       POWER_SUPPLY_PROP_ENERGY_FULL,
+       POWER_SUPPLY_PROP_ENERGY_NOW,
+       POWER_SUPPLY_PROP_TEMP,
+       POWER_SUPPLY_PROP_MODEL_NAME,
+       POWER_SUPPLY_PROP_MANUFACTURER,
+};
 
-       if (sbs->sbsm_present) {
+#endif
 
-               /* Take special care not to knobble other nibbles of
-                * state (aka selector_state), since
-                * it causes charging to halt on SBSELs */
+/* --------------------------------------------------------------------------
+                            Smart Battery System Management
+   -------------------------------------------------------------------------- */
 
-               result =
-                   acpi_sbs_read_word(sbs, ACPI_SBSM_SMBUS_ADDR, 0x01, &state);
-               if (result) {
-                       ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                                       "acpi_sbs_read_word() failed"));
-                       goto end;
-               }
+struct acpi_battery_reader {
+       u8 command;             /* command for battery */
+       u8 mode;                /* word or block? */
+       size_t offset;          /* offset inside struct acpi_sbs_battery */
+};
 
-               foo = (state & 0x0fff) | (1 << (battery->id + 12));
-               result =
-                   acpi_sbs_write_word(sbs, ACPI_SBSM_SMBUS_ADDR, 0x01, foo);
-               if (result) {
-                       ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                                       "acpi_sbs_write_word() failed"));
-                       goto end;
-               }
-       }
+static struct acpi_battery_reader info_readers[] = {
+       {0x01, SMBUS_READ_WORD, offsetof(struct acpi_battery, alarm_capacity)},
+       {0x03, SMBUS_READ_WORD, offsetof(struct acpi_battery, mode)},
+       {0x10, SMBUS_READ_WORD, offsetof(struct acpi_battery, full_charge_capacity)},
+       {0x17, SMBUS_READ_WORD, offsetof(struct acpi_battery, cycle_count)},
+       {0x18, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_capacity)},
+       {0x19, SMBUS_READ_WORD, offsetof(struct acpi_battery, design_voltage)},
+       {0x1a, SMBUS_READ_WORD, offsetof(struct acpi_battery, spec)},
+       {0x1c, SMBUS_READ_WORD, offsetof(struct acpi_battery, serial_number)},
+       {0x20, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, manufacturer_name)},
+       {0x21, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_name)},
+       {0x22, SMBUS_READ_BLOCK, offsetof(struct acpi_battery, device_chemistry)},
+};
 
-      end:
-       return result;
-}
+static struct acpi_battery_reader state_readers[] = {
+       {0x08, SMBUS_READ_WORD, offsetof(struct acpi_battery, temp_now)},
+       {0x09, SMBUS_READ_WORD, offsetof(struct acpi_battery, voltage_now)},
+       {0x0a, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_now)},
+       {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, rate_avg)},
+       {0x0f, SMBUS_READ_WORD, offsetof(struct acpi_battery, capacity_now)},
+       {0x0e, SMBUS_READ_WORD, offsetof(struct acpi_battery, state_of_charge)},
+       {0x16, SMBUS_READ_WORD, offsetof(struct acpi_battery, state)},
+};
 
-static int acpi_sbsm_get_info(struct acpi_sbs *sbs)
+static int acpi_manager_get_info(struct acpi_sbs *sbs)
 {
        int result = 0;
-       s16 battery_system_info;
-
-       result = acpi_sbs_read_word(sbs, ACPI_SBSM_SMBUS_ADDR, 0x04,
-                                   &battery_system_info);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-       sbs->sbsm_present = 1;
-       sbs->sbsm_batteries_supported = battery_system_info & 0x000f;
-
-      end:
+       u16 battery_system_info;
 
+       result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
+                                0x04, (u8 *)&battery_system_info);
+       if (!result)
+               sbs->batteries_supported = battery_system_info & 0x000f;
        return result;
 }
 
 static int acpi_battery_get_info(struct acpi_battery *battery)
 {
-       struct acpi_sbs *sbs = battery->sbs;
-       int result = 0;
-       s16 battery_mode;
-       s16 specification_info;
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x03,
-                                   &battery_mode);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-       battery->info.capacity_mode = (battery_mode & 0x8000) >> 15;
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x10,
-                                   &battery->info.full_charge_capacity);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x18,
-                                   &battery->info.design_capacity);
-
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x19,
-                                   &battery->info.design_voltage);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
+       int i, result = 0;
+
+       for (i = 0; i < ARRAY_SIZE(info_readers); ++i) {
+               result = acpi_smbus_read(battery->sbs->hc,
+                                        info_readers[i].mode,
+                                        ACPI_SBS_BATTERY,
+                                        info_readers[i].command,
+                                        (u8 *) battery +
+                                               info_readers[i].offset);
+               if (result)
+                       break;
        }
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x1a,
-                                   &specification_info);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-       switch ((specification_info & 0x0f00) >> 8) {
-       case 1:
-               battery->info.vscale = 10;
-               break;
-       case 2:
-               battery->info.vscale = 100;
-               break;
-       case 3:
-               battery->info.vscale = 1000;
-               break;
-       default:
-               battery->info.vscale = 1;
-       }
-
-       switch ((specification_info & 0xf000) >> 12) {
-       case 1:
-               battery->info.ipscale = 10;
-               break;
-       case 2:
-               battery->info.ipscale = 100;
-               break;
-       case 3:
-               battery->info.ipscale = 1000;
-               break;
-       default:
-               battery->info.ipscale = 1;
-       }
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x1c,
-                                   &battery->info.serial_number);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-       result = acpi_sbs_read_str(sbs, ACPI_SB_SMBUS_ADDR, 0x20,
-                                  battery->info.manufacturer_name);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_str() failed"));
-               goto end;
-       }
-
-       result = acpi_sbs_read_str(sbs, ACPI_SB_SMBUS_ADDR, 0x21,
-                                  battery->info.device_name);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_str() failed"));
-               goto end;
-       }
-
-       result = acpi_sbs_read_str(sbs, ACPI_SB_SMBUS_ADDR, 0x22,
-                                  battery->info.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)
 {
-       struct acpi_sbs *sbs = battery->sbs;
-       int result = 0;
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x09,
-                                   &battery->state.voltage);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
+       int i, result = 0;
 
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x0a,
-                                   &battery->state.amperage);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x0f,
-                                   &battery->state.remaining_capacity);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x16,
-                                   &battery->state.battery_state);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
+       if (battery->update_time &&
+           time_before(jiffies, battery->update_time +
+                               msecs_to_jiffies(cache_time)))
+               return 0;
+       for (i = 0; i < ARRAY_SIZE(state_readers); ++i) {
+               result = acpi_smbus_read(battery->sbs->hc,
+                                        state_readers[i].mode,
+                                        ACPI_SBS_BATTERY,
+                                        state_readers[i].command,
+                                        (u8 *)battery +
+                                               state_readers[i].offset);
+               if (result)
+                       goto end;
        }
-
       end:
+       battery->update_time = jiffies;
        return result;
 }
 
 static int acpi_battery_get_alarm(struct acpi_battery *battery)
 {
-       struct acpi_sbs *sbs = battery->sbs;
-       int result = 0;
-
-       result = acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x01,
-                                   &battery->alarm.remaining_capacity);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-      end:
-
-       return result;
+       return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
+                                ACPI_SBS_BATTERY, 0x01,
+                                (u8 *)&battery->alarm_capacity);
 }
 
-static int acpi_battery_set_alarm(struct acpi_battery *battery,
-                                 unsigned long alarm)
+static int acpi_battery_set_alarm(struct acpi_battery *battery)
 {
        struct acpi_sbs *sbs = battery->sbs;
-       int result = 0;
-       s16 battery_mode;
-       int foo;
+       u16 value, sel = 1 << (battery->id + 12);
 
-       result = acpi_battery_select(battery);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_battery_select() failed"));
-               goto end;
-       }
+       int ret;
 
-       /* If necessary, enable the alarm */
 
-       if (alarm > 0) {
-               result =
-                   acpi_sbs_read_word(sbs, ACPI_SB_SMBUS_ADDR, 0x03,
-                                      &battery_mode);
-               if (result) {
-                       ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                                       "acpi_sbs_read_word() failed"));
+       if (sbs->manager_present) {
+               ret = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER,
+                               0x01, (u8 *)&value);
+               if (ret)
                        goto end;
-               }
-
-               result =
-                   acpi_sbs_write_word(sbs, ACPI_SB_SMBUS_ADDR, 0x01,
-                                       battery_mode & 0xbfff);
-               if (result) {
-                       ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                                       "acpi_sbs_write_word() failed"));
+               if ((value & 0xf000) != sel) {
+                       value &= 0x0fff;
+                       value |= sel;
+               ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD,
+                                        ACPI_SBS_MANAGER,
+                                        0x01, (u8 *)&value, 2);
+               if (ret)
                        goto end;
                }
        }
-
-       foo = alarm / (battery->info.capacity_mode ? 10 : 1);
-       result = acpi_sbs_write_word(sbs, ACPI_SB_SMBUS_ADDR, 0x01, foo);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_write_word() failed"));
-               goto end;
-       }
-
+       ret = acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY,
+                               0x01, (u8 *)&battery->alarm_capacity, 2);
       end:
-
-       return result;
+       return ret;
 }
 
-static int acpi_battery_set_mode(struct acpi_battery *battery)
+static int acpi_ac_get_present(struct acpi_sbs *sbs)
 {
-       struct acpi_sbs *sbs = battery->sbs;
-       int result = 0;
-       s16 battery_mode;
-
-       if (capacity_mode == DEF_CAPACITY_UNIT) {
-               goto end;
-       }
-
-       result = acpi_sbs_read_word(sbs,
-                                   ACPI_SB_SMBUS_ADDR, 0x03, &battery_mode);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-       if (capacity_mode == MAH_CAPACITY_UNIT) {
-               battery_mode &= 0x7fff;
-       } else {
-               battery_mode |= 0x8000;
-       }
-       result = acpi_sbs_write_word(sbs,
-                                    ACPI_SB_SMBUS_ADDR, 0x03, battery_mode);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_write_word() failed"));
-               goto end;
-       }
-
-       result = acpi_sbs_read_word(sbs,
-                                   ACPI_SB_SMBUS_ADDR, 0x03, &battery_mode);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
+       int result;
+       u16 status;
 
-      end:
+       result = acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_CHARGER,
+                                0x13, (u8 *) & status);
+       if (!result)
+               sbs->charger_present = (status >> 15) & 0x1;
        return result;
 }
 
-static int acpi_battery_init(struct acpi_battery *battery)
+#ifdef CONFIG_ACPI_SYSFS_POWER
+static ssize_t acpi_battery_alarm_show(struct device *dev,
+                                       struct device_attribute *attr,
+                                       char *buf)
 {
-       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;
+       struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
+       acpi_battery_get_alarm(battery);
+       return sprintf(buf, "%d\n", battery->alarm_capacity *
+                               acpi_battery_scale(battery) * 1000);
 }
 
-static int acpi_ac_get_present(struct acpi_sbs *sbs)
+static ssize_t acpi_battery_alarm_store(struct device *dev,
+                                       struct device_attribute *attr,
+                                       const char *buf, size_t count)
 {
-       int result = 0;
-       s16 charger_status;
-
-       result = acpi_sbs_read_word(sbs, ACPI_SBC_SMBUS_ADDR, 0x13,
-                                   &charger_status);
-
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_sbs_read_word() failed"));
-               goto end;
-       }
-
-       sbs->ac.ac_present = (charger_status & 0x8000) >> 15;
-
-      end:
-
-       return result;
+       unsigned long x;
+       struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev));
+       if (sscanf(buf, "%ld\n", &x) == 1)
+               battery->alarm_capacity = x /
+                       (1000 * acpi_battery_scale(battery));
+       if (battery->present)
+               acpi_battery_set_alarm(battery);
+       return count;
 }
 
+static struct device_attribute alarm_attr = {
+       .attr = {.name = "alarm", .mode = 0644},
+       .show = acpi_battery_alarm_show,
+       .store = acpi_battery_alarm_store,
+};
+#endif
+
 /* --------------------------------------------------------------------------
                               FS Interface (/proc/acpi)
    -------------------------------------------------------------------------- */
 
+#ifdef CONFIG_ACPI_PROCFS_POWER
 /* 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)
+acpi_sbs_add_fs(struct proc_dir_entry **dir,
+               struct proc_dir_entry *parent_dir,
+               char *dir_name,
+               const struct file_operations *info_fops,
+               const struct file_operations *state_fops,
+               const 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;
-               }
-       }
+       if (info_fops)
+               proc_create_data(ACPI_SBS_FILE_INFO, S_IRUGO, *dir,
+                                info_fops, data);
 
        /* '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;
-               }
-       }
+       if (state_fops)
+               proc_create_data(ACPI_SBS_FILE_STATE, S_IRUGO, *dir,
+                                state_fops, data);
 
        /* '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;
-               }
-       }
-
+       if (alarm_fops)
+               proc_create_data(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir,
+                                alarm_fops, data);
        return 0;
 }
 
 static void
-acpi_sbs_generic_remove_fs(struct proc_dir_entry **dir,
+acpi_sbs_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);
@@ -926,82 +530,53 @@ acpi_sbs_generic_remove_fs(struct proc_dir_entry **dir,
                remove_proc_entry((*dir)->name, parent_dir);
                *dir = NULL;
        }
-
 }
 
 /* Smart Battery Interface */
-
 static struct proc_dir_entry *acpi_battery_dir = NULL;
 
+static inline char *acpi_battery_units(struct acpi_battery *battery)
+{
+       return acpi_battery_mode(battery) ? " mW" : " mA";
+}
+
+
 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;
-       }
+       mutex_lock(&sbs->lock);
 
-       result = acpi_check_update_proc(sbs);
-       if (result)
+       seq_printf(seq, "present:                 %s\n",
+                  (battery->present) ? "yes" : "no");
+       if (!battery->present)
                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->battery_present) {
-               seq_printf(seq, "present:                 yes\n");
-       } else {
-               seq_printf(seq, "present:                 no\n");
-               goto end;
-       }
-
-       if (battery->info.capacity_mode) {
-               cscale = battery->info.vscale * battery->info.ipscale;
-       } else {
-               cscale = battery->info.ipscale;
-       }
-       seq_printf(seq, "design capacity:         %i%s\n",
-                  battery->info.design_capacity * cscale,
-                  battery->info.capacity_mode ? "0 mWh" : " mAh");
-
-       seq_printf(seq, "last full capacity:      %i%s\n",
-                  battery->info.full_charge_capacity * cscale,
-                  battery->info.capacity_mode ? "0 mWh" : " mAh");
-
+       seq_printf(seq, "design capacity:         %i%sh\n",
+                  battery->design_capacity * acpi_battery_scale(battery),
+                  acpi_battery_units(battery));
+       seq_printf(seq, "last full capacity:      %i%sh\n",
+                  battery->full_charge_capacity * acpi_battery_scale(battery),
+                  acpi_battery_units(battery));
        seq_printf(seq, "battery technology:      rechargeable\n");
-
        seq_printf(seq, "design voltage:          %i mV\n",
-                  battery->info.design_voltage * battery->info.vscale);
-
+                  battery->design_voltage * acpi_battery_vscale(battery));
        seq_printf(seq, "design capacity warning: unknown\n");
        seq_printf(seq, "design capacity low:     unknown\n");
+       seq_printf(seq, "cycle count:             %i\n", battery->cycle_count);
        seq_printf(seq, "capacity granularity 1:  unknown\n");
        seq_printf(seq, "capacity granularity 2:  unknown\n");
-
-       seq_printf(seq, "model number:            %s\n",
-                  battery->info.device_name);
-
+       seq_printf(seq, "model number:            %s\n", battery->device_name);
        seq_printf(seq, "serial number:           %i\n",
-                  battery->info.serial_number);
-
+                  battery->serial_number);
        seq_printf(seq, "battery type:            %s\n",
-                  battery->info.device_chemistry);
-
+                  battery->device_chemistry);
        seq_printf(seq, "OEM info:                %s\n",
-                  battery->info.manufacturer_name);
-
+                  battery->manufacturer_name);
       end:
-
-       sbs_mutex_unlock(sbs);
-
+       mutex_unlock(&sbs->lock);
        return result;
 }
 
@@ -1014,75 +589,34 @@ 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;
+       int rate;
 
-       if (sbs_mutex_lock(sbs)) {
-               return -ENODEV;
-       }
-
-       result = acpi_check_update_proc(sbs);
-       if (result)
+       mutex_lock(&sbs->lock);
+       seq_printf(seq, "present:                 %s\n",
+                  (battery->present) ? "yes" : "no");
+       if (!battery->present)
                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->battery_present) {
-               seq_printf(seq, "present:                 yes\n");
-       } else {
-               seq_printf(seq, "present:                 no\n");
-               goto end;
-       }
-
-       if (battery->info.capacity_mode) {
-               cscale = battery->info.vscale * battery->info.ipscale;
-       } else {
-               cscale = battery->info.ipscale;
-       }
-
-       if (battery->state.battery_state & 0x0010) {
-               seq_printf(seq, "capacity state:          critical\n");
-       } else {
-               seq_printf(seq, "capacity state:          ok\n");
-       }
-
-       foo = (s16) battery->state.amperage * battery->info.ipscale;
-       if (battery->info.capacity_mode) {
-               foo = foo * battery->info.design_voltage / 1000;
-       }
-       if (battery->state.amperage < 0) {
-               seq_printf(seq, "charging state:          discharging\n");
-               seq_printf(seq, "present rate:            %d %s\n",
-                          -foo, battery->info.capacity_mode ? "mW" : "mA");
-       } else if (battery->state.amperage > 0) {
-               seq_printf(seq, "charging state:          charging\n");
-               seq_printf(seq, "present rate:            %d %s\n",
-                          foo, battery->info.capacity_mode ? "mW" : "mA");
-       } else {
-               seq_printf(seq, "charging state:          charged\n");
-               seq_printf(seq, "present rate:            0 %s\n",
-                          battery->info.capacity_mode ? "mW" : "mA");
-       }
-
-       seq_printf(seq, "remaining capacity:      %i%s\n",
-                  battery->state.remaining_capacity * cscale,
-                  battery->info.capacity_mode ? "0 mWh" : " mAh");
-
+       acpi_battery_get_state(battery);
+       seq_printf(seq, "capacity state:          %s\n",
+                  (battery->state & 0x0010) ? "critical" : "ok");
+       seq_printf(seq, "charging state:          %s\n",
+                  (battery->rate_now < 0) ? "discharging" :
+                  ((battery->rate_now > 0) ? "charging" : "charged"));
+       rate = abs(battery->rate_now) * acpi_battery_ipscale(battery);
+       rate *= (acpi_battery_mode(battery))?(battery->voltage_now *
+                       acpi_battery_vscale(battery)/1000):1;
+       seq_printf(seq, "present rate:            %d%s\n", rate,
+                  acpi_battery_units(battery));
+       seq_printf(seq, "remaining capacity:      %i%sh\n",
+                  battery->capacity_now * acpi_battery_scale(battery),
+                  acpi_battery_units(battery));
        seq_printf(seq, "present voltage:         %i mV\n",
-                  battery->state.voltage * battery->info.vscale);
+                  battery->voltage_now * acpi_battery_vscale(battery));
 
       end:
-
-       sbs_mutex_unlock(sbs);
-
-       return result;
+       mutex_unlock(&sbs->lock);
+       return 0;
 }
 
 static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
@@ -1095,48 +629,25 @@ 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;
+       mutex_lock(&sbs->lock);
 
-       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->battery_present) {
+       if (!battery->present) {
                seq_printf(seq, "present:                 no\n");
                goto end;
        }
 
-       if (battery->info.capacity_mode) {
-               cscale = battery->info.vscale * battery->info.ipscale;
-       } else {
-               cscale = battery->info.ipscale;
-       }
-
+       acpi_battery_get_alarm(battery);
        seq_printf(seq, "alarm:                   ");
-       if (battery->alarm.remaining_capacity) {
-               seq_printf(seq, "%i%s\n",
-                          battery->alarm.remaining_capacity * cscale,
-                          battery->info.capacity_mode ? "0 mWh" : " mAh");
-       } else {
+       if (battery->alarm_capacity)
+               seq_printf(seq, "%i%sh\n",
+                          battery->alarm_capacity *
+                          acpi_battery_scale(battery),
+                          acpi_battery_units(battery));
+       else
                seq_printf(seq, "disabled\n");
-       }
-
       end:
-
-       sbs_mutex_unlock(sbs);
-
+       mutex_unlock(&sbs->lock);
        return result;
 }
 
@@ -1148,59 +659,29 @@ acpi_battery_write_alarm(struct file *file, const char __user * buffer,
        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->battery_present) {
+       int result = 0;
+       mutex_lock(&sbs->lock);
+       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.remaining_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;
-       }
-
+       battery->alarm_capacity = simple_strtoul(alarm_string, NULL, 0) /
+                                       acpi_battery_scale(battery);
+       acpi_battery_set_alarm(battery);
       end:
-       sbs_mutex_unlock(sbs);
-
-       if (result) {
+       mutex_unlock(&sbs->lock);
+       if (result)
                return result;
-       } else {
-               return count;
-       }
+       return count;
 }
 
 static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
@@ -1208,7 +689,7 @@ 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 = {
+static const struct file_operations acpi_battery_info_fops = {
        .open = acpi_battery_info_open_fs,
        .read = seq_read,
        .llseek = seq_lseek,
@@ -1216,7 +697,7 @@ static struct file_operations acpi_battery_info_fops = {
        .owner = THIS_MODULE,
 };
 
-static struct file_operations acpi_battery_state_fops = {
+static const struct file_operations acpi_battery_state_fops = {
        .open = acpi_battery_state_open_fs,
        .read = seq_read,
        .llseek = seq_lseek,
@@ -1224,7 +705,7 @@ static struct file_operations acpi_battery_state_fops = {
        .owner = THIS_MODULE,
 };
 
-static struct file_operations acpi_battery_alarm_fops = {
+static const struct file_operations acpi_battery_alarm_fops = {
        .open = acpi_battery_alarm_open_fs,
        .read = seq_read,
        .write = acpi_battery_write_alarm,
@@ -1239,26 +720,15 @@ 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"));
-               }
-       }
+       mutex_lock(&sbs->lock);
 
        seq_printf(seq, "state:                   %s\n",
-                  sbs->ac.ac_present ? "on-line" : "off-line");
-
-       sbs_mutex_unlock(sbs);
+                  sbs->charger_present ? "on-line" : "off-line");
 
+       mutex_unlock(&sbs->lock);
        return 0;
 }
 
@@ -1267,7 +737,7 @@ 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 = {
+static const struct file_operations acpi_ac_state_fops = {
        .open = acpi_ac_state_open_fs,
        .read = seq_read,
        .llseek = seq_lseek,
@@ -1275,433 +745,225 @@ static struct file_operations acpi_ac_state_fops = {
        .owner = THIS_MODULE,
 };
 
+#endif
+
 /* --------------------------------------------------------------------------
                                  Driver Interface
    -------------------------------------------------------------------------- */
+static int acpi_battery_read(struct acpi_battery *battery)
+{
+       int result = 0, saved_present = battery->present;
+       u16 state;
+
+       if (battery->sbs->manager_present) {
+               result = acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD,
+                               ACPI_SBS_MANAGER, 0x01, (u8 *)&state);
+               if (!result)
+                       battery->present = state & (1 << battery->id);
+               state &= 0x0fff;
+               state |= 1 << (battery->id + 12);
+               acpi_smbus_write(battery->sbs->hc, SMBUS_WRITE_WORD,
+                                 ACPI_SBS_MANAGER, 0x01, (u8 *)&state, 2);
+       } else if (battery->id == 0)
+               battery->present = 1;
+       if (result || !battery->present)
+               return result;
 
-/* Smart Battery */
+       if (saved_present != battery->present) {
+               battery->update_time = 0;
+               result = acpi_battery_get_info(battery);
+               if (result)
+                       return result;
+       }
+       result = acpi_battery_get_state(battery);
+       return result;
+}
 
+/* Smart Battery */
 static int acpi_battery_add(struct acpi_sbs *sbs, int id)
 {
-       int is_present;
+       struct acpi_battery *battery = &sbs->battery[id];
        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_read(battery);
+       if (result)
+               return result;
 
-       result = acpi_battery_select(battery);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_battery_select() failed"));
-               goto end;
+       sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id);
+#ifdef CONFIG_ACPI_PROCFS_POWER
+       acpi_sbs_add_fs(&battery->proc_entry, acpi_battery_dir,
+                       battery->name, &acpi_battery_info_fops,
+                       &acpi_battery_state_fops, &acpi_battery_alarm_fops,
+                       battery);
+#endif
+#ifdef CONFIG_ACPI_SYSFS_POWER
+       battery->bat.name = battery->name;
+       battery->bat.type = POWER_SUPPLY_TYPE_BATTERY;
+       if (!acpi_battery_mode(battery)) {
+               battery->bat.properties = sbs_charge_battery_props;
+               battery->bat.num_properties =
+                   ARRAY_SIZE(sbs_charge_battery_props);
+       } else {
+               battery->bat.properties = sbs_energy_battery_props;
+               battery->bat.num_properties =
+                   ARRAY_SIZE(sbs_energy_battery_props);
        }
-
-       result = acpi_battery_get_present(battery);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_battery_get_present() failed"));
+       battery->bat.get_property = acpi_sbs_battery_get_property;
+       result = power_supply_register(&sbs->device->dev, &battery->bat);
+       if (result)
                goto end;
-       }
-
-       is_present = battery->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->battery_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"));
+       result = device_create_file(battery->bat.dev, &alarm_attr);
+       if (result)
                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->battery_present ? "present" : "absent");
-
+       battery->have_sysfs_alarm = 1;
       end:
+#endif
+       printk(KERN_INFO PREFIX "%s [%s]: Battery Slot [%s] (battery %s)\n",
+              ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
+              battery->name, battery->present ? "present" : "absent");
        return result;
 }
 
 static void acpi_battery_remove(struct acpi_sbs *sbs, int id)
 {
-
-       if (sbs->battery[id].battery_entry) {
-               acpi_sbs_generic_remove_fs(&(sbs->battery[id].battery_entry),
-                                          acpi_battery_dir);
-       }
+#if defined(CONFIG_ACPI_SYSFS_POWER) || defined(CONFIG_ACPI_PROCFS_POWER)
+       struct acpi_battery *battery = &sbs->battery[id];
+#endif
+
+#ifdef CONFIG_ACPI_SYSFS_POWER
+       if (battery->bat.dev) {
+               if (battery->have_sysfs_alarm)
+                       device_remove_file(battery->bat.dev, &alarm_attr);
+               power_supply_unregister(&battery->bat);
+       }
+#endif
+#ifdef CONFIG_ACPI_PROCFS_POWER
+       if (battery->proc_entry)
+               acpi_sbs_remove_fs(&battery->proc_entry, acpi_battery_dir);
+#endif
 }
 
-static int acpi_ac_add(struct acpi_sbs *sbs)
+static int acpi_charger_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"));
+       if (result)
                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"));
+#ifdef CONFIG_ACPI_PROCFS_POWER
+       result = acpi_sbs_add_fs(&sbs->charger_entry, acpi_ac_dir,
+                                ACPI_AC_DIR_NAME, NULL,
+                                &acpi_ac_state_fops, NULL, sbs);
+       if (result)
                goto end;
-       }
-
+#endif
+#ifdef CONFIG_ACPI_SYSFS_POWER
+       sbs->charger.name = "sbs-charger";
+       sbs->charger.type = POWER_SUPPLY_TYPE_MAINS;
+       sbs->charger.properties = sbs_ac_props;
+       sbs->charger.num_properties = ARRAY_SIZE(sbs_ac_props);
+       sbs->charger.get_property = sbs_get_ac_property;
+       power_supply_register(&sbs->device->dev, &sbs->charger);
+#endif
        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->ac.ac_present ? "on-line" : "off-line");
-
+              ACPI_AC_DIR_NAME, sbs->charger_present ? "on-line" : "off-line");
       end:
-
        return result;
 }
 
-static void acpi_ac_remove(struct acpi_sbs *sbs)
+static void acpi_charger_remove(struct acpi_sbs *sbs)
 {
-
-       if (sbs->ac_entry) {
-               acpi_sbs_generic_remove_fs(&sbs->ac_entry, acpi_ac_dir);
-       }
+#ifdef CONFIG_ACPI_SYSFS_POWER
+       if (sbs->charger.dev)
+               power_supply_unregister(&sbs->charger);
+#endif
+#ifdef CONFIG_ACPI_PROCFS_POWER
+       if (sbs->charger_entry)
+               acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir);
+#endif
 }
 
-static void acpi_sbs_update_time_run(unsigned long data)
+static void acpi_sbs_callback(void *context)
 {
-       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_battery_present = -1;
-       int new_ac_present = -1;
-       int new_battery_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_ac = 1, 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_ac && !update_battery) {
-               goto end;
-       }
-
-       old_ac_present = sbs->ac.ac_present;
-
-       result = acpi_ac_get_present(sbs);
-       if (result) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_ac_get_present() failed"));
-       }
-
-       new_ac_present = sbs->ac.ac_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_sbs_generate_event(sbs->device,
-                                                ACPI_SBS_AC_NOTIFY_STATUS,
-                                                new_ac_present,
-                                                ACPI_AC_DIR_NAME,
-                                                ACPI_AC_CLASS);
-               if (result) {
-                       ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                                       "acpi_sbs_generate_event() failed"));
-               }
-       }
-
-       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->state.remaining_capacity;
-
-               old_battery_present = battery->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_battery_present = battery->battery_present;
-
-               do_battery_init = ((old_battery_present != new_battery_present)
-                                  && new_battery_present);
-               if (!new_battery_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_battery_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_battery_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_battery_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_battery_present != new_battery_present || do_ac_init ||
-                   old_remaining_capacity !=
-                   battery->state.remaining_capacity) {
-                       sprintf(dir_name, ACPI_BATTERY_DIR_NAME, id);
-                       result = acpi_sbs_generate_event(sbs->device,
-                                                        ACPI_SBS_BATTERY_NOTIFY_STATUS,
-                                                        new_battery_present,
-                                                        dir_name,
-                                                        ACPI_BATTERY_CLASS);
-                       if (result) {
-                               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                                               "acpi_sbs_generate_event() "
-                                               "failed"));
-                       }
+       int id;
+       struct acpi_sbs *sbs = context;
+       struct acpi_battery *bat;
+       u8 saved_charger_state = sbs->charger_present;
+       u8 saved_battery_state;
+       acpi_ac_get_present(sbs);
+       if (sbs->charger_present != saved_charger_state) {
+#ifdef CONFIG_ACPI_PROC_EVENT
+               acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME,
+                                             ACPI_SBS_NOTIFY_STATUS,
+                                             sbs->charger_present);
+#endif
+#ifdef CONFIG_ACPI_SYSFS_POWER
+               kobject_uevent(&sbs->charger.dev->kobj, KOBJ_CHANGE);
+#endif
+       }
+       if (sbs->manager_present) {
+               for (id = 0; id < MAX_SBS_BAT; ++id) {
+                       if (!(sbs->batteries_supported & (1 << id)))
+                               continue;
+                       bat = &sbs->battery[id];
+                       saved_battery_state = bat->present;
+                       acpi_battery_read(bat);
+                       if (saved_battery_state == bat->present)
+                               continue;
+#ifdef CONFIG_ACPI_PROC_EVENT
+                       acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS,
+                                                     bat->name,
+                                                     ACPI_SBS_NOTIFY_STATUS,
+                                                     bat->present);
+#endif
+#ifdef CONFIG_ACPI_SYSFS_POWER
+                       kobject_uevent(&bat->bat.dev->kobj, KOBJ_CHANGE);
+#endif
                }
        }
-
-      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_remove(struct acpi_device *device, int type);
 
 static int acpi_sbs_add(struct acpi_device *device)
 {
-       struct acpi_sbs *sbs = NULL;
-       int result = 0, remove_result = 0;
+       struct acpi_sbs *sbs;
+       int result = 0;
        int id;
-       acpi_status status = AE_OK;
-       unsigned long val;
-
-       status =
-           acpi_evaluate_integer(device->handle, "_EC", NULL, &val);
-       if (ACPI_FAILURE(status)) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Error obtaining _EC"));
-               return -EIO;
-       }
 
        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);
+       mutex_init(&sbs->lock);
 
-       sbs->base = 0xff & (val >> 8);
+       sbs->hc = acpi_driver_data(device->parent);
        sbs->device = device;
-
        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);
+       device->driver_data = sbs;
 
-       if (!sbs->sbsm_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->sbsm_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);
+       result = acpi_charger_add(sbs);
        if (result)
                goto end;
 
+       result = acpi_manager_get_info(sbs);
+       if (!result) {
+               sbs->manager_present = 1;
+               for (id = 0; id < MAX_SBS_BAT; ++id)
+                       if ((sbs->batteries_supported & (1 << id)))
+                               acpi_battery_add(sbs, id);
+       } else
+               acpi_battery_add(sbs, 0);
+       acpi_smbus_register_callback(sbs->hc, acpi_sbs_callback, sbs);
       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"));
-               }
-       }
-
+       if (result)
+               acpi_sbs_remove(device, 0);
        return result;
 }
 
@@ -1710,39 +972,25 @@ static int acpi_sbs_remove(struct acpi_device *device, int type)
        struct acpi_sbs *sbs;
        int id;
 
-       if (!device) {
+       if (!device)
                return -EINVAL;
-       }
-
        sbs = acpi_driver_data(device);
-       if (!sbs) {
+       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++) {
+       mutex_lock(&sbs->lock);
+       acpi_smbus_unregister_callback(sbs->hc);
+       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);
-
+       acpi_charger_remove(sbs);
+       mutex_unlock(&sbs->lock);
+       mutex_destroy(&sbs->lock);
        kfree(sbs);
-
        return 0;
 }
 
 static void acpi_sbs_rmdirs(void)
 {
+#ifdef CONFIG_ACPI_PROCFS_POWER
        if (acpi_ac_dir) {
                acpi_unlock_ac_dir(acpi_ac_dir);
                acpi_ac_dir = NULL;
@@ -1751,69 +999,58 @@ static void acpi_sbs_rmdirs(void)
                acpi_unlock_battery_dir(acpi_battery_dir);
                acpi_battery_dir = NULL;
        }
+#endif
 }
 
 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;
-
+       acpi_sbs_callback(sbs);
        return 0;
 }
 
+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,
+               },
+};
+
 static int __init acpi_sbs_init(void)
 {
        int result = 0;
 
        if (acpi_disabled)
                return -ENODEV;
-
-       if (capacity_mode != DEF_CAPACITY_UNIT
-           && capacity_mode != MAH_CAPACITY_UNIT
-           && capacity_mode != MWH_CAPACITY_UNIT) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "invalid capacity_mode = %d", capacity_mode));
-               return -EINVAL;
-       }
-
+#ifdef CONFIG_ACPI_PROCFS_POWER
        acpi_ac_dir = acpi_lock_ac_dir();
-       if (!acpi_ac_dir) {
-               ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-                               "acpi_lock_ac_dir() failed"));
+       if (!acpi_ac_dir)
                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;
        }
-
+#endif
        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;
 }