bc90a0105d
Remove dead code spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
1824 lines
41 KiB
C
1824 lines
41 KiB
C
/*
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* acpi_sbs.c - ACPI Smart Battery System Driver ($Revision: 1.16 $)
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*
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* Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <asm/uaccess.h>
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#include <linux/acpi.h>
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#include <linux/timer.h>
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#include <linux/jiffies.h>
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#include <linux/delay.h>
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#define ACPI_SBS_COMPONENT 0x00080000
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#define ACPI_SBS_CLASS "sbs"
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#define ACPI_AC_CLASS "ac_adapter"
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#define ACPI_BATTERY_CLASS "battery"
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#define ACPI_SBS_DEVICE_NAME "Smart Battery System"
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#define ACPI_SBS_FILE_INFO "info"
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#define ACPI_SBS_FILE_STATE "state"
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#define ACPI_SBS_FILE_ALARM "alarm"
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#define ACPI_BATTERY_DIR_NAME "BAT%i"
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#define ACPI_AC_DIR_NAME "AC0"
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#define ACPI_SBC_SMBUS_ADDR 0x9
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#define ACPI_SBSM_SMBUS_ADDR 0xa
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#define ACPI_SB_SMBUS_ADDR 0xb
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#define ACPI_SBS_AC_NOTIFY_STATUS 0x80
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#define ACPI_SBS_BATTERY_NOTIFY_STATUS 0x80
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#define ACPI_SBS_BATTERY_NOTIFY_INFO 0x81
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#define _COMPONENT ACPI_SBS_COMPONENT
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ACPI_MODULE_NAME("sbs");
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MODULE_AUTHOR("Rich Townsend");
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MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
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MODULE_LICENSE("GPL");
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#define xmsleep(t) msleep(t)
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#define ACPI_EC_SMB_PRTCL 0x00 /* protocol, PEC */
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#define ACPI_EC_SMB_STS 0x01 /* status */
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#define ACPI_EC_SMB_ADDR 0x02 /* address */
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#define ACPI_EC_SMB_CMD 0x03 /* command */
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#define ACPI_EC_SMB_DATA 0x04 /* 32 data registers */
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#define ACPI_EC_SMB_BCNT 0x24 /* number of data bytes */
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#define ACPI_EC_SMB_STS_DONE 0x80
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#define ACPI_EC_SMB_STS_STATUS 0x1f
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#define ACPI_EC_SMB_PRTCL_WRITE 0x00
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#define ACPI_EC_SMB_PRTCL_READ 0x01
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#define ACPI_EC_SMB_PRTCL_WORD_DATA 0x08
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#define ACPI_EC_SMB_PRTCL_BLOCK_DATA 0x0a
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#define ACPI_EC_SMB_TRANSACTION_SLEEP 1
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#define ACPI_EC_SMB_ACCESS_SLEEP1 1
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#define ACPI_EC_SMB_ACCESS_SLEEP2 10
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#define DEF_CAPACITY_UNIT 3
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#define MAH_CAPACITY_UNIT 1
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#define MWH_CAPACITY_UNIT 2
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#define CAPACITY_UNIT DEF_CAPACITY_UNIT
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#define REQUEST_UPDATE_MODE 1
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#define QUEUE_UPDATE_MODE 2
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#define DATA_TYPE_COMMON 0
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#define DATA_TYPE_INFO 1
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#define DATA_TYPE_STATE 2
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#define DATA_TYPE_ALARM 3
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#define DATA_TYPE_AC_STATE 4
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extern struct proc_dir_entry *acpi_lock_ac_dir(void);
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extern struct proc_dir_entry *acpi_lock_battery_dir(void);
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extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
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extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
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#define MAX_SBS_BAT 4
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#define ACPI_SBS_BLOCK_MAX 32
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#define ACPI_SBS_SMBUS_READ 1
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#define ACPI_SBS_SMBUS_WRITE 2
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#define ACPI_SBS_WORD_DATA 1
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#define ACPI_SBS_BLOCK_DATA 2
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#define UPDATE_DELAY 10
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/* 0 - every time, > 0 - by update_time */
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static unsigned int update_time = 120;
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static unsigned int capacity_mode = CAPACITY_UNIT;
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module_param(update_time, uint, 0644);
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module_param(capacity_mode, uint, 0444);
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static int acpi_sbs_add(struct acpi_device *device);
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static int acpi_sbs_remove(struct acpi_device *device, int type);
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static int acpi_sbs_resume(struct acpi_device *device);
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static const struct acpi_device_id sbs_device_ids[] = {
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{"ACPI0001", 0},
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{"ACPI0005", 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
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static struct acpi_driver acpi_sbs_driver = {
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.name = "sbs",
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.class = ACPI_SBS_CLASS,
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.ids = sbs_device_ids,
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.ops = {
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.add = acpi_sbs_add,
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.remove = acpi_sbs_remove,
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.resume = acpi_sbs_resume,
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},
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};
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struct acpi_ac {
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int ac_present;
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};
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struct acpi_battery_info {
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int capacity_mode;
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s16 full_charge_capacity;
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s16 design_capacity;
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s16 design_voltage;
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int vscale;
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int ipscale;
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s16 serial_number;
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char manufacturer_name[ACPI_SBS_BLOCK_MAX + 3];
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char device_name[ACPI_SBS_BLOCK_MAX + 3];
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char device_chemistry[ACPI_SBS_BLOCK_MAX + 3];
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};
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struct acpi_battery_state {
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s16 voltage;
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s16 amperage;
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s16 remaining_capacity;
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s16 battery_state;
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};
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struct acpi_battery_alarm {
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s16 remaining_capacity;
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};
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struct acpi_battery {
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int alive;
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int id;
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int init_state;
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int battery_present;
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struct acpi_sbs *sbs;
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struct acpi_battery_info info;
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struct acpi_battery_state state;
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struct acpi_battery_alarm alarm;
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struct proc_dir_entry *battery_entry;
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};
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struct acpi_sbs {
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int base;
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struct acpi_device *device;
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struct mutex mutex;
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int sbsm_present;
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int sbsm_batteries_supported;
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struct proc_dir_entry *ac_entry;
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struct acpi_ac ac;
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struct acpi_battery battery[MAX_SBS_BAT];
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int zombie;
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struct timer_list update_timer;
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int run_cnt;
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int update_proc_flg;
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};
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static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type);
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static void acpi_sbs_update_time(void *data);
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union sbs_rw_data {
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u16 word;
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u8 block[ACPI_SBS_BLOCK_MAX + 2];
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};
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static int acpi_ec_sbs_access(struct acpi_sbs *sbs, u16 addr,
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char read_write, u8 command, int size,
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union sbs_rw_data *data);
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/* --------------------------------------------------------------------------
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SMBus Communication
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-------------------------------------------------------------------------- */
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static int acpi_ec_sbs_read(struct acpi_sbs *sbs, u8 address, u8 * data)
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{
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u8 val;
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int err;
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err = ec_read(sbs->base + address, &val);
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if (!err) {
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*data = val;
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}
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xmsleep(ACPI_EC_SMB_TRANSACTION_SLEEP);
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return (err);
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}
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static int acpi_ec_sbs_write(struct acpi_sbs *sbs, u8 address, u8 data)
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{
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int err;
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err = ec_write(sbs->base + address, data);
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return (err);
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}
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static int
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acpi_ec_sbs_access(struct acpi_sbs *sbs, u16 addr,
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char read_write, u8 command, int size,
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union sbs_rw_data *data)
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{
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unsigned char protocol, len = 0, temp[2] = { 0, 0 };
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int i;
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if (read_write == ACPI_SBS_SMBUS_READ) {
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protocol = ACPI_EC_SMB_PRTCL_READ;
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} else {
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protocol = ACPI_EC_SMB_PRTCL_WRITE;
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}
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switch (size) {
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case ACPI_SBS_WORD_DATA:
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acpi_ec_sbs_write(sbs, ACPI_EC_SMB_CMD, command);
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if (read_write == ACPI_SBS_SMBUS_WRITE) {
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acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA, data->word);
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acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA + 1,
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data->word >> 8);
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}
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protocol |= ACPI_EC_SMB_PRTCL_WORD_DATA;
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break;
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case ACPI_SBS_BLOCK_DATA:
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acpi_ec_sbs_write(sbs, ACPI_EC_SMB_CMD, command);
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if (read_write == ACPI_SBS_SMBUS_WRITE) {
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len = min_t(u8, data->block[0], 32);
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acpi_ec_sbs_write(sbs, ACPI_EC_SMB_BCNT, len);
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for (i = 0; i < len; i++)
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acpi_ec_sbs_write(sbs, ACPI_EC_SMB_DATA + i,
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data->block[i + 1]);
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}
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protocol |= ACPI_EC_SMB_PRTCL_BLOCK_DATA;
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break;
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default:
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ACPI_EXCEPTION((AE_INFO, AE_ERROR,
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"unsupported transaction %d", size));
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return (-1);
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}
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acpi_ec_sbs_write(sbs, ACPI_EC_SMB_ADDR, addr << 1);
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acpi_ec_sbs_write(sbs, ACPI_EC_SMB_PRTCL, protocol);
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acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
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if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
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xmsleep(ACPI_EC_SMB_ACCESS_SLEEP1);
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acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
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}
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if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
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xmsleep(ACPI_EC_SMB_ACCESS_SLEEP2);
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acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
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}
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if ((~temp[0] & ACPI_EC_SMB_STS_DONE)
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|| (temp[0] & ACPI_EC_SMB_STS_STATUS)) {
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ACPI_EXCEPTION((AE_INFO, AE_ERROR,
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"transaction %d error", size));
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return (-1);
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}
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if (read_write == ACPI_SBS_SMBUS_WRITE) {
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return (0);
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}
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switch (size) {
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case ACPI_SBS_WORD_DATA:
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acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA, temp);
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acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA + 1, temp + 1);
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data->word = (temp[1] << 8) | temp[0];
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break;
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case ACPI_SBS_BLOCK_DATA:
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len = 0;
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acpi_ec_sbs_read(sbs, ACPI_EC_SMB_BCNT, &len);
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len = min_t(u8, len, 32);
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for (i = 0; i < len; i++)
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acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA + i,
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data->block + i + 1);
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data->block[0] = len;
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break;
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default:
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ACPI_EXCEPTION((AE_INFO, AE_ERROR,
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"unsupported transaction %d", size));
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return (-1);
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}
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return (0);
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}
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static int
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acpi_sbs_read_word(struct acpi_sbs *sbs, int addr, int func, u16 * word)
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{
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union sbs_rw_data data;
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int result = 0;
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result = acpi_ec_sbs_access(sbs, addr,
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ACPI_SBS_SMBUS_READ, func,
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ACPI_SBS_WORD_DATA, &data);
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if (result) {
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ACPI_EXCEPTION((AE_INFO, AE_ERROR,
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"acpi_ec_sbs_access() failed"));
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} else {
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*word = data.word;
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}
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return result;
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}
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static int
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acpi_sbs_read_str(struct acpi_sbs *sbs, int addr, int func, char *str)
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{
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union sbs_rw_data data;
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int result = 0;
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result = acpi_ec_sbs_access(sbs, addr,
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ACPI_SBS_SMBUS_READ, func,
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ACPI_SBS_BLOCK_DATA, &data);
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if (result) {
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ACPI_EXCEPTION((AE_INFO, AE_ERROR,
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"acpi_ec_sbs_access() failed"));
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} else {
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strncpy(str, (const char *)data.block + 1, data.block[0]);
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str[data.block[0]] = 0;
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}
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return result;
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}
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static int
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acpi_sbs_write_word(struct acpi_sbs *sbs, int addr, int func, int word)
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{
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union sbs_rw_data data;
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int result = 0;
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data.word = word;
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result = acpi_ec_sbs_access(sbs, addr,
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ACPI_SBS_SMBUS_WRITE, func,
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ACPI_SBS_WORD_DATA, &data);
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if (result) {
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ACPI_EXCEPTION((AE_INFO, AE_ERROR,
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"acpi_ec_sbs_access() failed"));
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}
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return result;
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}
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static int sbs_zombie(struct acpi_sbs *sbs)
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{
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return (sbs->zombie);
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}
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static int sbs_mutex_lock(struct acpi_sbs *sbs)
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{
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if (sbs_zombie(sbs)) {
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return -ENODEV;
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}
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mutex_lock(&sbs->mutex);
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return 0;
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}
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static void sbs_mutex_unlock(struct acpi_sbs *sbs)
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{
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mutex_unlock(&sbs->mutex);
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}
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/* --------------------------------------------------------------------------
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Smart Battery System Management
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-------------------------------------------------------------------------- */
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static int acpi_check_update_proc(struct acpi_sbs *sbs)
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{
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acpi_status status = AE_OK;
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if (update_time == 0) {
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sbs->update_proc_flg = 0;
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return 0;
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}
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if (sbs->update_proc_flg == 0) {
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status = acpi_os_execute(OSL_GPE_HANDLER,
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acpi_sbs_update_time, sbs);
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if (status != AE_OK) {
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ACPI_EXCEPTION((AE_INFO, status,
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"acpi_os_execute() failed"));
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return 1;
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}
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sbs->update_proc_flg = 1;
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}
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return 0;
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}
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static int acpi_sbs_generate_event(struct acpi_device *device,
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int event, int state, char *bid, char *class)
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{
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char bid_saved[5];
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char class_saved[20];
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int result = 0;
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strcpy(bid_saved, acpi_device_bid(device));
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strcpy(class_saved, acpi_device_class(device));
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strcpy(acpi_device_bid(device), bid);
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strcpy(acpi_device_class(device), class);
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result = acpi_bus_generate_event(device, event, state);
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strcpy(acpi_device_bid(device), bid_saved);
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strcpy(acpi_device_class(device), class_saved);
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return result;
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}
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static int acpi_battery_get_present(struct acpi_battery *battery)
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{
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s16 state;
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int result = 0;
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int is_present = 0;
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result = acpi_sbs_read_word(battery->sbs,
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ACPI_SBSM_SMBUS_ADDR, 0x01, &state);
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if (result) {
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ACPI_EXCEPTION((AE_INFO, AE_ERROR,
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"acpi_sbs_read_word() failed"));
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}
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if (!result) {
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is_present = (state & 0x000f) & (1 << battery->id);
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}
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battery->battery_present = is_present;
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return result;
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}
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static int acpi_battery_select(struct acpi_battery *battery)
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{
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struct acpi_sbs *sbs = battery->sbs;
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int result = 0;
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s16 state;
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int foo;
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if (sbs->sbsm_present) {
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/* Take special care not to knobble other nibbles of
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* state (aka selector_state), since
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* it causes charging to halt on SBSELs */
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result =
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acpi_sbs_read_word(sbs, ACPI_SBSM_SMBUS_ADDR, 0x01, &state);
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if (result) {
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ACPI_EXCEPTION((AE_INFO, AE_ERROR,
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"acpi_sbs_read_word() failed"));
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goto end;
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}
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foo = (state & 0x0fff) | (1 << (battery->id + 12));
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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;
|
|
}
|
|
}
|
|
|
|
end:
|
|
return result;
|
|
}
|
|
|
|
static int acpi_sbsm_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:
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
end:
|
|
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;
|
|
}
|
|
|
|
static int acpi_battery_set_alarm(struct acpi_battery *battery,
|
|
unsigned long alarm)
|
|
{
|
|
struct acpi_sbs *sbs = battery->sbs;
|
|
int result = 0;
|
|
s16 battery_mode;
|
|
int foo;
|
|
|
|
result = acpi_battery_select(battery);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_battery_select() failed"));
|
|
goto end;
|
|
}
|
|
|
|
/* If necessary, enable the alarm */
|
|
|
|
if (alarm > 0) {
|
|
result =
|
|
acpi_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;
|
|
}
|
|
|
|
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"));
|
|
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;
|
|
}
|
|
|
|
end:
|
|
|
|
return result;
|
|
}
|
|
|
|
static int acpi_battery_set_mode(struct acpi_battery *battery)
|
|
{
|
|
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;
|
|
}
|
|
|
|
end:
|
|
return result;
|
|
}
|
|
|
|
static int acpi_battery_init(struct acpi_battery *battery)
|
|
{
|
|
int result = 0;
|
|
|
|
result = acpi_battery_select(battery);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_battery_select() failed"));
|
|
goto end;
|
|
}
|
|
|
|
result = acpi_battery_set_mode(battery);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_battery_set_mode() failed"));
|
|
goto end;
|
|
}
|
|
|
|
result = acpi_battery_get_info(battery);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_battery_get_info() failed"));
|
|
goto end;
|
|
}
|
|
|
|
result = acpi_battery_get_state(battery);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_battery_get_state() failed"));
|
|
goto end;
|
|
}
|
|
|
|
result = acpi_battery_get_alarm(battery);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_battery_get_alarm() failed"));
|
|
goto end;
|
|
}
|
|
|
|
end:
|
|
return result;
|
|
}
|
|
|
|
static int acpi_ac_get_present(struct acpi_sbs *sbs)
|
|
{
|
|
int result = 0;
|
|
s16 charger_status;
|
|
|
|
result = acpi_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;
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------
|
|
FS Interface (/proc/acpi)
|
|
-------------------------------------------------------------------------- */
|
|
|
|
/* Generic Routines */
|
|
|
|
static int
|
|
acpi_sbs_generic_add_fs(struct proc_dir_entry **dir,
|
|
struct proc_dir_entry *parent_dir,
|
|
char *dir_name,
|
|
struct file_operations *info_fops,
|
|
struct file_operations *state_fops,
|
|
struct file_operations *alarm_fops, void *data)
|
|
{
|
|
struct proc_dir_entry *entry = NULL;
|
|
|
|
if (!*dir) {
|
|
*dir = proc_mkdir(dir_name, parent_dir);
|
|
if (!*dir) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"proc_mkdir() failed"));
|
|
return -ENODEV;
|
|
}
|
|
(*dir)->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'info' [R] */
|
|
if (info_fops) {
|
|
entry = create_proc_entry(ACPI_SBS_FILE_INFO, S_IRUGO, *dir);
|
|
if (!entry) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"create_proc_entry() failed"));
|
|
} else {
|
|
entry->proc_fops = info_fops;
|
|
entry->data = data;
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
}
|
|
|
|
/* 'state' [R] */
|
|
if (state_fops) {
|
|
entry = create_proc_entry(ACPI_SBS_FILE_STATE, S_IRUGO, *dir);
|
|
if (!entry) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"create_proc_entry() failed"));
|
|
} else {
|
|
entry->proc_fops = state_fops;
|
|
entry->data = data;
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
}
|
|
|
|
/* 'alarm' [R/W] */
|
|
if (alarm_fops) {
|
|
entry = create_proc_entry(ACPI_SBS_FILE_ALARM, S_IRUGO, *dir);
|
|
if (!entry) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"create_proc_entry() failed"));
|
|
} else {
|
|
entry->proc_fops = alarm_fops;
|
|
entry->data = data;
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
acpi_sbs_generic_remove_fs(struct proc_dir_entry **dir,
|
|
struct proc_dir_entry *parent_dir)
|
|
{
|
|
|
|
if (*dir) {
|
|
remove_proc_entry(ACPI_SBS_FILE_INFO, *dir);
|
|
remove_proc_entry(ACPI_SBS_FILE_STATE, *dir);
|
|
remove_proc_entry(ACPI_SBS_FILE_ALARM, *dir);
|
|
remove_proc_entry((*dir)->name, parent_dir);
|
|
*dir = NULL;
|
|
}
|
|
|
|
}
|
|
|
|
/* Smart Battery Interface */
|
|
|
|
static struct proc_dir_entry *acpi_battery_dir = NULL;
|
|
|
|
static int acpi_battery_read_info(struct seq_file *seq, void *offset)
|
|
{
|
|
struct acpi_battery *battery = seq->private;
|
|
struct acpi_sbs *sbs = battery->sbs;
|
|
int cscale;
|
|
int result = 0;
|
|
|
|
if (sbs_mutex_lock(sbs)) {
|
|
return -ENODEV;
|
|
}
|
|
|
|
result = acpi_check_update_proc(sbs);
|
|
if (result)
|
|
goto end;
|
|
|
|
if (update_time == 0) {
|
|
result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_INFO);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_sbs_update_run() failed"));
|
|
}
|
|
}
|
|
|
|
if (battery->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, "battery technology: rechargeable\n");
|
|
|
|
seq_printf(seq, "design voltage: %i mV\n",
|
|
battery->info.design_voltage * battery->info.vscale);
|
|
|
|
seq_printf(seq, "design capacity warning: unknown\n");
|
|
seq_printf(seq, "design capacity low: unknown\n");
|
|
seq_printf(seq, "capacity granularity 1: unknown\n");
|
|
seq_printf(seq, "capacity granularity 2: unknown\n");
|
|
|
|
seq_printf(seq, "model number: %s\n",
|
|
battery->info.device_name);
|
|
|
|
seq_printf(seq, "serial number: %i\n",
|
|
battery->info.serial_number);
|
|
|
|
seq_printf(seq, "battery type: %s\n",
|
|
battery->info.device_chemistry);
|
|
|
|
seq_printf(seq, "OEM info: %s\n",
|
|
battery->info.manufacturer_name);
|
|
|
|
end:
|
|
|
|
sbs_mutex_unlock(sbs);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, acpi_battery_read_info, PDE(inode)->data);
|
|
}
|
|
|
|
static int acpi_battery_read_state(struct seq_file *seq, void *offset)
|
|
{
|
|
struct acpi_battery *battery = seq->private;
|
|
struct acpi_sbs *sbs = battery->sbs;
|
|
int result = 0;
|
|
int cscale;
|
|
int foo;
|
|
|
|
if (sbs_mutex_lock(sbs)) {
|
|
return -ENODEV;
|
|
}
|
|
|
|
result = acpi_check_update_proc(sbs);
|
|
if (result)
|
|
goto end;
|
|
|
|
if (update_time == 0) {
|
|
result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_STATE);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_sbs_update_run() failed"));
|
|
}
|
|
}
|
|
|
|
if (battery->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");
|
|
|
|
seq_printf(seq, "present voltage: %i mV\n",
|
|
battery->state.voltage * battery->info.vscale);
|
|
|
|
end:
|
|
|
|
sbs_mutex_unlock(sbs);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, acpi_battery_read_state, PDE(inode)->data);
|
|
}
|
|
|
|
static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
|
|
{
|
|
struct acpi_battery *battery = seq->private;
|
|
struct acpi_sbs *sbs = battery->sbs;
|
|
int result = 0;
|
|
int cscale;
|
|
|
|
if (sbs_mutex_lock(sbs)) {
|
|
return -ENODEV;
|
|
}
|
|
|
|
result = acpi_check_update_proc(sbs);
|
|
if (result)
|
|
goto end;
|
|
|
|
if (update_time == 0) {
|
|
result = acpi_sbs_update_run(sbs, battery->id, DATA_TYPE_ALARM);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_sbs_update_run() failed"));
|
|
}
|
|
}
|
|
|
|
if (!battery->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;
|
|
}
|
|
|
|
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 {
|
|
seq_printf(seq, "disabled\n");
|
|
}
|
|
|
|
end:
|
|
|
|
sbs_mutex_unlock(sbs);
|
|
|
|
return result;
|
|
}
|
|
|
|
static ssize_t
|
|
acpi_battery_write_alarm(struct file *file, const char __user * buffer,
|
|
size_t count, loff_t * ppos)
|
|
{
|
|
struct seq_file *seq = file->private_data;
|
|
struct acpi_battery *battery = seq->private;
|
|
struct acpi_sbs *sbs = battery->sbs;
|
|
char alarm_string[12] = { '\0' };
|
|
int result, old_alarm, new_alarm;
|
|
|
|
if (sbs_mutex_lock(sbs)) {
|
|
return -ENODEV;
|
|
}
|
|
|
|
result = acpi_check_update_proc(sbs);
|
|
if (result)
|
|
goto end;
|
|
|
|
if (!battery->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;
|
|
}
|
|
|
|
end:
|
|
sbs_mutex_unlock(sbs);
|
|
|
|
if (result) {
|
|
return result;
|
|
} else {
|
|
return count;
|
|
}
|
|
}
|
|
|
|
static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
|
|
}
|
|
|
|
static struct file_operations acpi_battery_info_fops = {
|
|
.open = acpi_battery_info_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct file_operations acpi_battery_state_fops = {
|
|
.open = acpi_battery_state_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static struct file_operations acpi_battery_alarm_fops = {
|
|
.open = acpi_battery_alarm_open_fs,
|
|
.read = seq_read,
|
|
.write = acpi_battery_write_alarm,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
/* Legacy AC Adapter Interface */
|
|
|
|
static struct proc_dir_entry *acpi_ac_dir = NULL;
|
|
|
|
static int acpi_ac_read_state(struct seq_file *seq, void *offset)
|
|
{
|
|
struct acpi_sbs *sbs = seq->private;
|
|
int result;
|
|
|
|
if (sbs_mutex_lock(sbs)) {
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (update_time == 0) {
|
|
result = acpi_sbs_update_run(sbs, -1, DATA_TYPE_AC_STATE);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_sbs_update_run() failed"));
|
|
}
|
|
}
|
|
|
|
seq_printf(seq, "state: %s\n",
|
|
sbs->ac.ac_present ? "on-line" : "off-line");
|
|
|
|
sbs_mutex_unlock(sbs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int acpi_ac_state_open_fs(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, acpi_ac_read_state, PDE(inode)->data);
|
|
}
|
|
|
|
static struct file_operations acpi_ac_state_fops = {
|
|
.open = acpi_ac_state_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
/* --------------------------------------------------------------------------
|
|
Driver Interface
|
|
-------------------------------------------------------------------------- */
|
|
|
|
/* Smart Battery */
|
|
|
|
static int acpi_battery_add(struct acpi_sbs *sbs, int id)
|
|
{
|
|
int is_present;
|
|
int result;
|
|
char dir_name[32];
|
|
struct acpi_battery *battery;
|
|
|
|
battery = &sbs->battery[id];
|
|
|
|
battery->alive = 0;
|
|
|
|
battery->init_state = 0;
|
|
battery->id = id;
|
|
battery->sbs = sbs;
|
|
|
|
result = acpi_battery_select(battery);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_battery_select() failed"));
|
|
goto end;
|
|
}
|
|
|
|
result = acpi_battery_get_present(battery);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_battery_get_present() failed"));
|
|
goto end;
|
|
}
|
|
|
|
is_present = battery->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"));
|
|
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");
|
|
|
|
end:
|
|
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);
|
|
}
|
|
}
|
|
|
|
static int acpi_ac_add(struct acpi_sbs *sbs)
|
|
{
|
|
int result;
|
|
|
|
result = acpi_ac_get_present(sbs);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_ac_get_present() failed"));
|
|
goto end;
|
|
}
|
|
|
|
result = acpi_sbs_generic_add_fs(&sbs->ac_entry,
|
|
acpi_ac_dir,
|
|
ACPI_AC_DIR_NAME,
|
|
NULL, &acpi_ac_state_fops, NULL, sbs);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_sbs_generic_add_fs() failed"));
|
|
goto end;
|
|
}
|
|
|
|
printk(KERN_INFO PREFIX "%s [%s]: AC Adapter [%s] (%s)\n",
|
|
ACPI_SBS_DEVICE_NAME, acpi_device_bid(sbs->device),
|
|
ACPI_AC_DIR_NAME, sbs->ac.ac_present ? "on-line" : "off-line");
|
|
|
|
end:
|
|
|
|
return result;
|
|
}
|
|
|
|
static void acpi_ac_remove(struct acpi_sbs *sbs)
|
|
{
|
|
|
|
if (sbs->ac_entry) {
|
|
acpi_sbs_generic_remove_fs(&sbs->ac_entry, acpi_ac_dir);
|
|
}
|
|
}
|
|
|
|
static void acpi_sbs_update_time_run(unsigned long data)
|
|
{
|
|
acpi_os_execute(OSL_GPE_HANDLER, acpi_sbs_update_time, (void *)data);
|
|
}
|
|
|
|
static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type)
|
|
{
|
|
struct acpi_battery *battery;
|
|
int result = 0, cnt;
|
|
int old_ac_present = -1;
|
|
int old_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_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++;
|
|
|
|
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"));
|
|
}
|
|
}
|
|
}
|
|
|
|
end:
|
|
|
|
return result;
|
|
}
|
|
|
|
static void acpi_sbs_update_time(void *data)
|
|
{
|
|
struct acpi_sbs *sbs = data;
|
|
unsigned long delay = -1;
|
|
int result;
|
|
unsigned int up_tm = update_time;
|
|
|
|
if (sbs_mutex_lock(sbs))
|
|
return;
|
|
|
|
result = acpi_sbs_update_run(sbs, -1, DATA_TYPE_COMMON);
|
|
if (result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_sbs_update_run() failed"));
|
|
}
|
|
|
|
if (sbs_zombie(sbs)) {
|
|
goto end;
|
|
}
|
|
|
|
if (!up_tm) {
|
|
if (timer_pending(&sbs->update_timer))
|
|
del_timer(&sbs->update_timer);
|
|
} else {
|
|
delay = (up_tm > UPDATE_DELAY ? UPDATE_DELAY : up_tm);
|
|
delay = jiffies + HZ * delay;
|
|
if (timer_pending(&sbs->update_timer)) {
|
|
mod_timer(&sbs->update_timer, delay);
|
|
} else {
|
|
sbs->update_timer.data = (unsigned long)data;
|
|
sbs->update_timer.function = acpi_sbs_update_time_run;
|
|
sbs->update_timer.expires = delay;
|
|
add_timer(&sbs->update_timer);
|
|
}
|
|
}
|
|
|
|
end:
|
|
|
|
sbs_mutex_unlock(sbs);
|
|
}
|
|
|
|
static int acpi_sbs_add(struct acpi_device *device)
|
|
{
|
|
struct acpi_sbs *sbs = NULL;
|
|
int result = 0, remove_result = 0;
|
|
int id;
|
|
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);
|
|
|
|
sbs->base = 0xff & (val >> 8);
|
|
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->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);
|
|
if (result)
|
|
goto end;
|
|
|
|
end:
|
|
|
|
sbs_mutex_unlock(sbs);
|
|
|
|
if (result) {
|
|
remove_result = acpi_sbs_remove(device, 0);
|
|
if (remove_result) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_sbs_remove() failed"));
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static int acpi_sbs_remove(struct acpi_device *device, int type)
|
|
{
|
|
struct acpi_sbs *sbs;
|
|
int id;
|
|
|
|
if (!device) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
sbs = acpi_driver_data(device);
|
|
if (!sbs) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
sbs_mutex_lock(sbs);
|
|
|
|
sbs->zombie = 1;
|
|
del_timer_sync(&sbs->update_timer);
|
|
acpi_os_wait_events_complete(NULL);
|
|
del_timer_sync(&sbs->update_timer);
|
|
|
|
for (id = 0; id < MAX_SBS_BAT; id++) {
|
|
acpi_battery_remove(sbs, id);
|
|
}
|
|
|
|
acpi_ac_remove(sbs);
|
|
|
|
sbs_mutex_unlock(sbs);
|
|
|
|
mutex_destroy(&sbs->mutex);
|
|
|
|
kfree(sbs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void acpi_sbs_rmdirs(void)
|
|
{
|
|
if (acpi_ac_dir) {
|
|
acpi_unlock_ac_dir(acpi_ac_dir);
|
|
acpi_ac_dir = NULL;
|
|
}
|
|
if (acpi_battery_dir) {
|
|
acpi_unlock_battery_dir(acpi_battery_dir);
|
|
acpi_battery_dir = NULL;
|
|
}
|
|
}
|
|
|
|
static int acpi_sbs_resume(struct acpi_device *device)
|
|
{
|
|
struct acpi_sbs *sbs;
|
|
|
|
if (!device)
|
|
return -EINVAL;
|
|
|
|
sbs = device->driver_data;
|
|
|
|
sbs->run_cnt = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init acpi_sbs_init(void)
|
|
{
|
|
int result = 0;
|
|
|
|
if (acpi_disabled)
|
|
return -ENODEV;
|
|
|
|
if (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;
|
|
}
|
|
|
|
acpi_ac_dir = acpi_lock_ac_dir();
|
|
if (!acpi_ac_dir) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_lock_ac_dir() failed"));
|
|
return -ENODEV;
|
|
}
|
|
|
|
acpi_battery_dir = acpi_lock_battery_dir();
|
|
if (!acpi_battery_dir) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_lock_battery_dir() failed"));
|
|
acpi_sbs_rmdirs();
|
|
return -ENODEV;
|
|
}
|
|
|
|
result = acpi_bus_register_driver(&acpi_sbs_driver);
|
|
if (result < 0) {
|
|
ACPI_EXCEPTION((AE_INFO, AE_ERROR,
|
|
"acpi_bus_register_driver() failed"));
|
|
acpi_sbs_rmdirs();
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit acpi_sbs_exit(void)
|
|
{
|
|
acpi_bus_unregister_driver(&acpi_sbs_driver);
|
|
|
|
acpi_sbs_rmdirs();
|
|
|
|
return;
|
|
}
|
|
|
|
module_init(acpi_sbs_init);
|
|
module_exit(acpi_sbs_exit);
|