diff options
| -rw-r--r-- | drivers/acpi/sbs.c | 1292 |
1 files changed, 275 insertions, 1017 deletions
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c index f35fe63cef3d..3351dea11ff0 100644 --- a/drivers/acpi/sbs.c +++ b/drivers/acpi/sbs.c @@ -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> * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -46,53 +48,34 @@ #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 +enum acpi_sbs_device_addr { + ACPI_SBS_CHARGER = 0x9, + ACPI_SBS_MANAGER = 0xa, + ACPI_SBS_BATTERY = 0xb, +}; + +#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 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 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); @@ -117,486 +100,187 @@ static struct acpi_driver acpi_sbs_driver = { struct acpi_battery { struct acpi_sbs *sbs; struct proc_dir_entry *proc_entry; - int vscale; - int ipscale; + 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]; + u32 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 current_now; + s16 current_avg; u16 capacity_now; + u16 state_of_charge; u16 state; - u16 alarm_capacity; u16 mode; + u16 spec; 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 mutex lock; + struct proc_dir_entry *charger_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 batteries_supported:4; 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) +static inline int battery_scale(int log) { - return (sbs->zombie); + int scale = 1; + while (log--) + scale *= 10; + return scale; } -static int sbs_mutex_lock(struct acpi_sbs *sbs) +static inline int acpi_battery_vscale(struct acpi_battery *battery) { - if (sbs_zombie(sbs)) { - return -ENODEV; - } - mutex_lock(&sbs->mutex); - return 0; + return battery_scale((battery->spec & 0x0f00) >> 8); } -static void sbs_mutex_unlock(struct acpi_sbs *sbs) +static inline int acpi_battery_ipscale(struct acpi_battery *battery) { - mutex_unlock(&sbs->mutex); + return battery_scale((battery->spec & 0xf000) >> 12); } -/* -------------------------------------------------------------------------- - Smart Battery System Management - -------------------------------------------------------------------------- */ - -static int acpi_check_update_proc(struct acpi_sbs *sbs) +static inline int acpi_battery_mode(struct acpi_battery *battery) { - 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; + return (battery->mode & 0x8000); } -static int acpi_battery_get_present(struct acpi_battery *battery) +static inline int acpi_battery_scale(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; + return (acpi_battery_mode(battery) ? 10 : 1) * + acpi_battery_ipscale(battery); } -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 */ +/* -------------------------------------------------------------------------- + Smart Battery System Management + -------------------------------------------------------------------------- */ - 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; - } +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_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; - } - } +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, current_now)}, + {0x0b, SMBUS_READ_WORD, offsetof(struct acpi_battery, current_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_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: + 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) { - 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); + int i, result = 0; - 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; + 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_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; + int i, result = 0; - 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")); + if (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; - } } - - 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: - + battery->update_time = jiffies; return result; } -static int acpi_battery_set_mode(struct acpi_battery *battery) +static int acpi_battery_get_alarm(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; + return acpi_smbus_read(battery->sbs->hc, SMBUS_READ_WORD, + ACPI_SBS_BATTERY, 0x01, + (u8 *) & battery->alarm_capacity); } -static int acpi_battery_init(struct acpi_battery *battery) +static int acpi_battery_set_alarm(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; - } + struct acpi_sbs *sbs = battery->sbs; + u16 value; + return 0; - result = acpi_battery_get_alarm(battery); - if (result) { - ACPI_EXCEPTION((AE_INFO, AE_ERROR, - "acpi_battery_get_alarm() failed")); - goto end; + if (sbs->manager_present) { + acpi_smbus_read(sbs->hc, SMBUS_READ_WORD, ACPI_SBS_MANAGER, + 0x01, (u8 *)&value); + value &= 0x0fff; + value |= 1 << (battery->id + 12); + acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_MANAGER, + 0x01, (u8 *)&value, 2); } - - end: - return result; + value = battery->alarm_capacity / (acpi_battery_mode(battery) ? 10 : 1); + return acpi_smbus_write(sbs->hc, SMBUS_WRITE_WORD, ACPI_SBS_BATTERY, + 0x01, (u8 *)&value, 2); } 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: + int result; + u16 status; + 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; } @@ -607,7 +291,7 @@ static int acpi_ac_get_present(struct acpi_sbs *sbs) /* Generic Routines */ static int -acpi_sbs_generic_add_fs(struct proc_dir_entry **dir, +acpi_sbs_add_fs(struct proc_dir_entry **dir, struct proc_dir_entry *parent_dir, char *dir_name, struct file_operations *info_fops, @@ -669,7 +353,7 @@ acpi_sbs_generic_add_fs(struct proc_dir_entry **dir, } 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) { @@ -687,75 +371,47 @@ acpi_sbs_generic_remove_fs(struct proc_dir_entry **dir, static struct proc_dir_entry *acpi_battery_dir = NULL; +static inline char *acpi_battery_units(struct acpi_battery *battery) +{ + return acpi_battery_mode(battery) ? " mWh" : " mAh"; +} + + 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->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"); - + battery->design_capacity * acpi_battery_scale(battery), + acpi_battery_units(battery)); seq_printf(seq, "last full capacity: %i%s\n", - battery->full_charge_capacity * cscale, - battery->mode ? "0 mWh" : " mAh"); - + 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->design_voltage * battery->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, "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, "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); - + mutex_unlock(&sbs->lock); return result; } @@ -769,73 +425,29 @@ 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"); + mutex_lock(&sbs->lock); + seq_printf(seq, "present: %s\n", + (battery->present) ? "yes" : "no"); + if (!battery->present) 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"); - } + 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->current_now < 0) ? "discharging" : + ((battery->current_now > 0) ? "charging" : "charged")); + seq_printf(seq, "present rate: %d mA\n", + abs(battery->current_now) * acpi_battery_ipscale(battery)); seq_printf(seq, "remaining capacity: %i%s\n", - battery->capacity_now * cscale, - battery->mode ? "0 mWh" : " mAh"); - + battery->capacity_now * acpi_battery_scale(battery), + acpi_battery_units(battery)); seq_printf(seq, "present voltage: %i mV\n", - battery->voltage_now * battery->vscale); + battery->voltage_now * acpi_battery_vscale(battery)); end: - - sbs_mutex_unlock(sbs); - + mutex_unlock(&sbs->lock); return result; } @@ -849,48 +461,25 @@ 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; - - 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")); - } - } + mutex_lock(&sbs->lock); if (!battery->present) { seq_printf(seq, "present: no\n"); goto end; } - if (battery->mode) { - cscale = battery->vscale * battery->ipscale; - } else { - cscale = battery->ipscale; - } - + acpi_battery_get_alarm(battery); seq_printf(seq, "alarm: "); - if (battery->alarm_capacity) { + if (battery->alarm_capacity) seq_printf(seq, "%i%s\n", - battery->alarm_capacity * cscale, - battery->mode ? "0 mWh" : " mAh"); - } else { + 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; } @@ -902,59 +491,28 @@ 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; - + 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_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_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) @@ -993,26 +551,15 @@ 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; - } + struct acpi_sbs *sbs = seq->private; - 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->charger_present ? "on-line" : "off-line"); - sbs_mutex_unlock(sbs); - + mutex_unlock(&sbs->lock); return 0; } @@ -1035,67 +582,54 @@ static struct file_operations acpi_ac_state_fops = { /* Smart Battery */ -static int acpi_battery_add(struct acpi_sbs *sbs, int id) +static int acpi_battery_read(struct acpi_battery *battery) { - int is_present; - int result; - char dir_name[32]; - struct acpi_battery *battery; + int result = 0, saved_present = battery->present; + u16 state; - battery = &sbs->battery[id]; + 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; - battery->alive = 0; + 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; +} - battery->init_state = 0; +static int acpi_battery_add(struct acpi_sbs *sbs, int id) +{ + int result; + struct acpi_battery *battery = &sbs->battery[id]; battery->id = id; battery->sbs = sbs; + battery->update_time = 0; + 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; - } - - 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; - + sprintf(battery->name, ACPI_BATTERY_DIR_NAME, id); + 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); 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: + ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device), + battery->name, sbs->battery->present ? "present" : "absent"); return result; } @@ -1103,354 +637,105 @@ 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); + acpi_sbs_remove_fs(&(sbs->battery[id].proc_entry), + acpi_battery_dir); } } -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")); + 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; - } - 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) +static void acpi_charger_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); + if (sbs->charger_entry) + acpi_sbs_remove_fs(&sbs->charger_entry, acpi_ac_dir); } -static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type) +void acpi_sbs_callback(void *context) { - 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; + 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) { + acpi_bus_generate_proc_event4(ACPI_AC_CLASS, ACPI_AC_DIR_NAME, + ACPI_SBS_NOTIFY_STATUS, + sbs->charger_present); } - - 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")); - } + 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; + acpi_bus_generate_proc_event4(ACPI_BATTERY_CLASS, + bat->name, + ACPI_SBS_NOTIFY_STATUS, + bat->present); } } - - 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; 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->device = device; 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); - - 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); + 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; } @@ -1459,34 +744,19 @@ 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; } @@ -1505,14 +775,10 @@ static void acpi_sbs_rmdirs(void) 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; } @@ -1523,14 +789,6 @@ static int __init acpi_sbs_init(void) 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, |