--- /dev/null
+/*
+ * acpi_sbs.c - ACPI Smart Battery System Driver ($Revision: 1.16 $)
+ *
+ * Copyright (c) 2005 Rich Townsend <rhdt@bartol.udel.edu>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <asm/uaccess.h>
+#include <linux/acpi.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+
+#include "i2c_ec.h"
+
+#define DEF_CAPACITY_UNIT 3
+#define MAH_CAPACITY_UNIT 1
+#define MWH_CAPACITY_UNIT 2
+#define CAPACITY_UNIT DEF_CAPACITY_UNIT
+
+#define REQUEST_UPDATE_MODE 1
+#define QUEUE_UPDATE_MODE 2
+
+#define DATA_TYPE_COMMON 0
+#define DATA_TYPE_INFO 1
+#define DATA_TYPE_STATE 2
+#define DATA_TYPE_ALARM 3
+#define DATA_TYPE_AC_STATE 4
+
+extern struct proc_dir_entry *acpi_lock_ac_dir(void);
+extern struct proc_dir_entry *acpi_lock_battery_dir(void);
+extern void acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
+extern void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
+
+#define ACPI_SBS_COMPONENT 0x00080000
+#define ACPI_SBS_CLASS "sbs"
+#define ACPI_AC_CLASS "ac_adapter"
+#define ACPI_BATTERY_CLASS "battery"
+#define ACPI_SBS_HID "ACPI0002"
+#define ACPI_SBS_DRIVER_NAME "ACPI Smart Battery System Driver"
+#define ACPI_SBS_DEVICE_NAME "Smart Battery System"
+#define ACPI_SBS_FILE_INFO "info"
+#define ACPI_SBS_FILE_STATE "state"
+#define ACPI_SBS_FILE_ALARM "alarm"
+#define ACPI_BATTERY_DIR_NAME "BAT%i"
+#define ACPI_AC_DIR_NAME "AC0"
+#define ACPI_SBC_SMBUS_ADDR 0x9
+#define ACPI_SBSM_SMBUS_ADDR 0xa
+#define ACPI_SB_SMBUS_ADDR 0xb
+#define ACPI_SBS_AC_NOTIFY_STATUS 0x80
+#define ACPI_SBS_BATTERY_NOTIFY_STATUS 0x80
+#define ACPI_SBS_BATTERY_NOTIFY_INFO 0x81
+
+#define _COMPONENT ACPI_SBS_COMPONENT
+
+#define MAX_SBS_BAT 4
+#define MAX_SMBUS_ERR 1
+
+ACPI_MODULE_NAME("acpi_sbs");
+
+MODULE_AUTHOR("Rich Townsend");
+MODULE_DESCRIPTION("Smart Battery System ACPI interface driver");
+MODULE_LICENSE("GPL");
+
+static struct semaphore sbs_sem;
+
+#define UPDATE_MODE QUEUE_UPDATE_MODE
+/* REQUEST_UPDATE_MODE QUEUE_UPDATE_MODE */
+#define UPDATE_INFO_MODE 0
+#define UPDATE_TIME 60
+#define UPDATE_TIME2 0
+
+static int capacity_mode = CAPACITY_UNIT;
+static int update_mode = UPDATE_MODE;
+static int update_info_mode = UPDATE_INFO_MODE;
+static int update_time = UPDATE_TIME;
+static int update_time2 = UPDATE_TIME2;
+
+module_param(capacity_mode, int, CAPACITY_UNIT);
+module_param(update_mode, int, UPDATE_MODE);
+module_param(update_info_mode, int, UPDATE_INFO_MODE);
+module_param(update_time, int, UPDATE_TIME);
+module_param(update_time2, int, UPDATE_TIME2);
+
+static int acpi_sbs_add(struct acpi_device *device);
+static int acpi_sbs_remove(struct acpi_device *device, int type);
+static void acpi_battery_smbus_err_handler(struct acpi_ec_smbus *smbus);
+static void acpi_sbs_update_queue(void *data);
+
+static struct acpi_driver acpi_sbs_driver = {
+ .name = ACPI_SBS_DRIVER_NAME,
+ .class = ACPI_SBS_CLASS,
+ .ids = ACPI_SBS_HID,
+ .ops = {
+ .add = acpi_sbs_add,
+ .remove = acpi_sbs_remove,
+ },
+};
+
+struct acpi_battery_info {
+ int capacity_mode;
+ s16 full_charge_capacity;
+ s16 design_capacity;
+ s16 design_voltage;
+ int vscale;
+ int ipscale;
+ s16 serial_number;
+ char manufacturer_name[I2C_SMBUS_BLOCK_MAX + 3];
+ char device_name[I2C_SMBUS_BLOCK_MAX + 3];
+ char device_chemistry[I2C_SMBUS_BLOCK_MAX + 3];
+};
+
+struct acpi_battery_state {
+ s16 voltage;
+ s16 amperage;
+ s16 remaining_capacity;
+ s16 average_time_to_empty;
+ s16 average_time_to_full;
+ s16 battery_status;
+};
+
+struct acpi_battery_alarm {
+ s16 remaining_capacity;
+};
+
+struct acpi_battery {
+ int alive;
+ int battery_present;
+ int id;
+ int init_state;
+ struct acpi_sbs *sbs;
+ struct acpi_battery_info info;
+ struct acpi_battery_state state;
+ struct acpi_battery_alarm alarm;
+ struct proc_dir_entry *battery_entry;
+};
+
+struct acpi_sbs {
+ acpi_handle handle;
+ struct acpi_device *device;
+ struct acpi_ec_smbus *smbus;
+ int sbsm_present;
+ int sbsm_batteries_supported;
+ int ac_present;
+ struct proc_dir_entry *ac_entry;
+ struct acpi_battery battery[MAX_SBS_BAT];
+ int update_info_mode;
+ int zombie;
+ int update_time;
+ int update_time2;
+ struct timer_list update_timer;
+};
+
+static void acpi_update_delay(struct acpi_sbs *sbs);
+static int acpi_sbs_update_run(struct acpi_sbs *sbs, int data_type);
+
+/* --------------------------------------------------------------------------
+ SMBus Communication
+ -------------------------------------------------------------------------- */
+
+static void acpi_battery_smbus_err_handler(struct acpi_ec_smbus *smbus)
+{
+ union i2c_smbus_data data;
+ int result = 0;
+ char *err_str;
+ int err_number;
+
+ data.word = 0;
+
+ result = smbus->adapter.algo->
+ smbus_xfer(&smbus->adapter,
+ ACPI_SB_SMBUS_ADDR,
+ 0, I2C_SMBUS_READ, 0x16, I2C_SMBUS_BLOCK_DATA, &data);
+
+ err_number = (data.word & 0x000f);
+
+ switch (data.word & 0x000f) {
+ case 0x0000:
+ err_str = "unexpected bus error";
+ break;
+ case 0x0001:
+ err_str = "busy";
+ break;
+ case 0x0002:
+ err_str = "reserved command";
+ break;
+ case 0x0003:
+ err_str = "unsupported command";
+ break;
+ case 0x0004:
+ err_str = "access denied";
+ break;
+ case 0x0005:
+ err_str = "overflow/underflow";
+ break;
+ case 0x0006:
+ err_str = "bad size";
+ break;
+ case 0x0007:
+ err_str = "unknown error";
+ break;
+ default:
+ err_str = "unrecognized error";
+ }
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "%s: ret %i, err %i\n", err_str, result, err_number));
+}
+
+static int
+acpi_sbs_smbus_read_word(struct acpi_ec_smbus *smbus, int addr, int func,
+ u16 * word,
+ void (*err_handler) (struct acpi_ec_smbus * smbus))
+{
+ union i2c_smbus_data data;
+ int result = 0;
+ int i;
+
+ if (err_handler == NULL) {
+ err_handler = acpi_battery_smbus_err_handler;
+ }
+
+ for (i = 0; i < MAX_SMBUS_ERR; i++) {
+ result =
+ smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0,
+ I2C_SMBUS_READ, func,
+ I2C_SMBUS_WORD_DATA, &data);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "try %i: smbus->adapter.algo->smbus_xfer() failed\n",
+ i));
+ if (err_handler) {
+ err_handler(smbus);
+ }
+ } else {
+ *word = data.word;
+ break;
+ }
+ }
+
+ return result;
+}
+
+static int
+acpi_sbs_smbus_read_str(struct acpi_ec_smbus *smbus, int addr, int func,
+ char *str,
+ void (*err_handler) (struct acpi_ec_smbus * smbus))
+{
+ union i2c_smbus_data data;
+ int result = 0;
+ int i;
+
+ if (err_handler == NULL) {
+ err_handler = acpi_battery_smbus_err_handler;
+ }
+
+ for (i = 0; i < MAX_SMBUS_ERR; i++) {
+ result =
+ smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0,
+ I2C_SMBUS_READ, func,
+ I2C_SMBUS_BLOCK_DATA,
+ &data);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "try %i: smbus->adapter.algo->smbus_xfer() failed\n",
+ i));
+ if (err_handler) {
+ err_handler(smbus);
+ }
+ } else {
+ strncpy(str, (const char *)data.block + 1,
+ data.block[0]);
+ str[data.block[0]] = 0;
+ break;
+ }
+ }
+
+ return result;
+}
+
+static int
+acpi_sbs_smbus_write_word(struct acpi_ec_smbus *smbus, int addr, int func,
+ int word,
+ void (*err_handler) (struct acpi_ec_smbus * smbus))
+{
+ union i2c_smbus_data data;
+ int result = 0;
+ int i;
+
+ if (err_handler == NULL) {
+ err_handler = acpi_battery_smbus_err_handler;
+ }
+
+ data.word = word;
+
+ for (i = 0; i < MAX_SMBUS_ERR; i++) {
+ result =
+ smbus->adapter.algo->smbus_xfer(&smbus->adapter, addr, 0,
+ I2C_SMBUS_WRITE, func,
+ I2C_SMBUS_WORD_DATA, &data);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "try %i: smbus->adapter.algo"
+ "->smbus_xfer() failed\n", i));
+ if (err_handler) {
+ err_handler(smbus);
+ }
+ } else {
+ break;
+ }
+ }
+
+ return result;
+}
+
+/* --------------------------------------------------------------------------
+ Smart Battery System Management
+ -------------------------------------------------------------------------- */
+
+/* Smart Battery */
+
+static int acpi_sbs_generate_event(struct acpi_device *device,
+ int event, int state, char *bid, char *class)
+{
+ char bid_saved[5];
+ char class_saved[20];
+ int result = 0;
+
+ strcpy(bid_saved, acpi_device_bid(device));
+ strcpy(class_saved, acpi_device_class(device));
+
+ strcpy(acpi_device_bid(device), bid);
+ strcpy(acpi_device_class(device), class);
+
+ result = acpi_bus_generate_event(device, event, state);
+
+ strcpy(acpi_device_bid(device), bid_saved);
+ strcpy(acpi_device_class(device), class_saved);
+
+ return result;
+}
+
+static int acpi_battery_get_present(struct acpi_battery *battery)
+{
+ s16 state;
+ int result = 0;
+ int is_present = 0;
+
+ result = acpi_sbs_smbus_read_word(battery->sbs->smbus,
+ ACPI_SBSM_SMBUS_ADDR, 0x01,
+ &state, NULL);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed"));
+ }
+ if (!result) {
+ is_present = (state & 0x000f) & (1 << battery->id);
+ }
+ battery->battery_present = is_present;
+
+ return result;
+}
+
+static int acpi_battery_is_present(struct acpi_battery *battery)
+{
+ return (battery->battery_present);
+}
+
+static int acpi_ac_is_present(struct acpi_sbs *sbs)
+{
+ return (sbs->ac_present);
+}
+
+static int acpi_battery_select(struct acpi_battery *battery)
+{
+ struct acpi_ec_smbus *smbus = battery->sbs->smbus;
+ int result = 0;
+ s16 state;
+ int foo;
+
+ if (battery->sbs->sbsm_present) {
+
+ /* Take special care not to knobble other nibbles of
+ * state (aka selector_state), since
+ * it causes charging to halt on SBSELs */
+
+ result =
+ acpi_sbs_smbus_read_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x01,
+ &state, NULL);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ foo = (state & 0x0fff) | (1 << (battery->id + 12));
+ result =
+ acpi_sbs_smbus_write_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x01,
+ foo, NULL);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_write_word() failed\n"));
+ goto end;
+ }
+ }
+
+ end:
+ return result;
+}
+
+static int acpi_sbsm_get_info(struct acpi_sbs *sbs)
+{
+ struct acpi_ec_smbus *smbus = sbs->smbus;
+ int result = 0;
+ s16 battery_system_info;
+
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SBSM_SMBUS_ADDR, 0x04,
+ &battery_system_info, NULL);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ sbs->sbsm_batteries_supported = battery_system_info & 0x000f;
+
+ end:
+
+ return result;
+}
+
+static int acpi_battery_get_info(struct acpi_battery *battery)
+{
+ struct acpi_ec_smbus *smbus = battery->sbs->smbus;
+ int result = 0;
+ s16 battery_mode;
+ s16 specification_info;
+
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x03,
+ &battery_mode,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+ battery->info.capacity_mode = (battery_mode & 0x8000) >> 15;
+
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x10,
+ &battery->info.full_charge_capacity,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x18,
+ &battery->info.design_capacity,
+ &acpi_battery_smbus_err_handler);
+
+ if (result) {
+ goto end;
+ }
+
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x19,
+ &battery->info.design_voltage,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x1a,
+ &specification_info,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ 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_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x1c,
+ &battery->info.serial_number,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ goto end;
+ }
+
+ result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x20,
+ battery->info.manufacturer_name,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_str() failed\n"));
+ goto end;
+ }
+
+ result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x21,
+ battery->info.device_name,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_str() failed\n"));
+ goto end;
+ }
+
+ result = acpi_sbs_smbus_read_str(smbus, ACPI_SB_SMBUS_ADDR, 0x22,
+ battery->info.device_chemistry,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_str() failed\n"));
+ goto end;
+ }
+
+ end:
+ return result;
+}
+
+static void acpi_update_delay(struct acpi_sbs *sbs)
+{
+ if (sbs->zombie) {
+ return;
+ }
+ if (sbs->update_time2 > 0) {
+ msleep(sbs->update_time2 * 1000);
+ }
+}
+
+static int acpi_battery_get_state(struct acpi_battery *battery)
+{
+ struct acpi_ec_smbus *smbus = battery->sbs->smbus;
+ int result = 0;
+
+ acpi_update_delay(battery->sbs);
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x09,
+ &battery->state.voltage,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ acpi_update_delay(battery->sbs);
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x0a,
+ &battery->state.amperage,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ acpi_update_delay(battery->sbs);
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x0f,
+ &battery->state.remaining_capacity,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ acpi_update_delay(battery->sbs);
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x12,
+ &battery->state.average_time_to_empty,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ acpi_update_delay(battery->sbs);
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x13,
+ &battery->state.average_time_to_full,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ acpi_update_delay(battery->sbs);
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x16,
+ &battery->state.battery_status,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ acpi_update_delay(battery->sbs);
+
+ end:
+ return result;
+}
+
+static int acpi_battery_get_alarm(struct acpi_battery *battery)
+{
+ struct acpi_ec_smbus *smbus = battery->sbs->smbus;
+ int result = 0;
+
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01,
+ &battery->alarm.remaining_capacity,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ acpi_update_delay(battery->sbs);
+
+ end:
+
+ return result;
+}
+
+static int acpi_battery_set_alarm(struct acpi_battery *battery,
+ unsigned long alarm)
+{
+ struct acpi_ec_smbus *smbus = battery->sbs->smbus;
+ int result = 0;
+ s16 battery_mode;
+ int foo;
+
+ result = acpi_battery_select(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_select() failed\n"));
+ goto end;
+ }
+
+ /* If necessary, enable the alarm */
+
+ if (alarm > 0) {
+ result =
+ acpi_sbs_smbus_read_word(smbus, ACPI_SB_SMBUS_ADDR, 0x03,
+ &battery_mode,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ result =
+ acpi_sbs_smbus_write_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01,
+ battery_mode & 0xbfff,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_write_word() failed\n"));
+ goto end;
+ }
+ }
+
+ foo = alarm / (battery->info.capacity_mode ? 10 : 1);
+ result = acpi_sbs_smbus_write_word(smbus, ACPI_SB_SMBUS_ADDR, 0x01,
+ foo,
+ &acpi_battery_smbus_err_handler);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_write_word() failed\n"));
+ goto end;
+ }
+
+ end:
+
+ return result;
+}
+
+static int acpi_battery_set_mode(struct acpi_battery *battery)
+{
+ int result = 0;
+ s16 battery_mode;
+
+ if (capacity_mode == DEF_CAPACITY_UNIT) {
+ goto end;
+ }
+
+ result = acpi_sbs_smbus_read_word(battery->sbs->smbus,
+ ACPI_SB_SMBUS_ADDR, 0x03,
+ &battery_mode, NULL);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ if (capacity_mode == MAH_CAPACITY_UNIT) {
+ battery_mode &= 0x7fff;
+ } else {
+ battery_mode |= 0x8000;
+ }
+ result = acpi_sbs_smbus_write_word(battery->sbs->smbus,
+ ACPI_SB_SMBUS_ADDR, 0x03,
+ battery_mode, NULL);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_write_word() failed\n"));
+ goto end;
+ }
+
+ result = acpi_sbs_smbus_read_word(battery->sbs->smbus,
+ ACPI_SB_SMBUS_ADDR, 0x03,
+ &battery_mode, NULL);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_init() failed\n"));
+ goto end;
+ }
+
+ result = acpi_battery_set_mode(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_set_mode() failed\n"));
+ goto end;
+ }
+
+ result = acpi_battery_get_info(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_get_info() failed\n"));
+ goto end;
+ }
+
+ result = acpi_battery_get_state(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_get_state() failed\n"));
+ goto end;
+ }
+
+ result = acpi_battery_get_alarm(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_get_alarm() failed\n"));
+ goto end;
+ }
+
+ end:
+ return result;
+}
+
+static int acpi_ac_get_present(struct acpi_sbs *sbs)
+{
+ struct acpi_ec_smbus *smbus = sbs->smbus;
+ int result = 0;
+ s16 charger_status;
+
+ result = acpi_sbs_smbus_read_word(smbus, ACPI_SBC_SMBUS_ADDR, 0x13,
+ &charger_status, NULL);
+
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_smbus_read_word() failed\n"));
+ goto end;
+ }
+
+ sbs->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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "proc_mkdir() failed\n"));
+ 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "create_proc_entry() failed\n"));
+ } 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "create_proc_entry() failed\n"));
+ } 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "create_proc_entry() failed\n"));
+ } 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 = (struct acpi_battery *)seq->private;
+ int cscale;
+ int result = 0;
+
+ if (battery->sbs->zombie) {
+ return -ENODEV;
+ }
+
+ down(&sbs_sem);
+
+ if (update_mode == REQUEST_UPDATE_MODE) {
+ result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_INFO);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_update_run() failed\n"));
+ }
+ }
+
+ if (acpi_battery_is_present(battery)) {
+ 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",
+ battery->info.design_capacity * cscale,
+ battery->info.capacity_mode ? "0 mWh\n" : " mAh\n");
+
+ seq_printf(seq, "last full capacity: %i%s",
+ battery->info.full_charge_capacity * cscale,
+ battery->info.capacity_mode ? "0 mWh\n" : " mAh\n");
+
+ 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:
+
+ up(&sbs_sem);
+
+ 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 = (struct acpi_battery *)seq->private;
+ int result = 0;
+ int cscale;
+ int foo;
+
+ if (battery->sbs->zombie) {
+ return -ENODEV;
+ }
+
+ down(&sbs_sem);
+
+ if (update_mode == REQUEST_UPDATE_MODE) {
+ result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_STATE);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_update_run() failed\n"));
+ }
+ }
+
+ if (acpi_battery_is_present(battery)) {
+ 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_status & 0x0010) {
+ seq_printf(seq, "capacity state: critical\n");
+ } else {
+ seq_printf(seq, "capacity state: ok\n");
+ }
+ if (battery->state.amperage < 0) {
+ seq_printf(seq, "charging state: discharging\n");
+ foo = battery->state.remaining_capacity * cscale * 60 /
+ (battery->state.average_time_to_empty == 0 ? 1 :
+ battery->state.average_time_to_empty);
+ seq_printf(seq, "present rate: %i%s\n",
+ foo, battery->info.capacity_mode ? "0 mW" : " mA");
+ } else if (battery->state.amperage > 0) {
+ seq_printf(seq, "charging state: charging\n");
+ foo = (battery->info.full_charge_capacity -
+ battery->state.remaining_capacity) * cscale * 60 /
+ (battery->state.average_time_to_full == 0 ? 1 :
+ battery->state.average_time_to_full);
+ seq_printf(seq, "present rate: %i%s\n",
+ foo, battery->info.capacity_mode ? "0 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",
+ battery->state.remaining_capacity * cscale,
+ battery->info.capacity_mode ? "0 mWh\n" : " mAh\n");
+
+ seq_printf(seq, "present voltage: %i mV\n",
+ battery->state.voltage * battery->info.vscale);
+
+ end:
+
+ up(&sbs_sem);
+
+ 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 = (struct acpi_battery *)seq->private;
+ int result = 0;
+ int cscale;
+
+ if (battery->sbs->zombie) {
+ return -ENODEV;
+ }
+
+ down(&sbs_sem);
+
+ if (update_mode == REQUEST_UPDATE_MODE) {
+ result = acpi_sbs_update_run(battery->sbs, DATA_TYPE_ALARM);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_update_run() failed\n"));
+ }
+ }
+
+ if (!acpi_battery_is_present(battery)) {
+ 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",
+ battery->alarm.remaining_capacity * cscale,
+ battery->info.capacity_mode ? "0 mWh\n" : " mAh\n");
+ } else {
+ seq_printf(seq, "disabled\n");
+ }
+
+ end:
+
+ up(&sbs_sem);
+
+ 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 = (struct seq_file *)file->private_data;
+ struct acpi_battery *battery = (struct acpi_battery *)seq->private;
+ char alarm_string[12] = { '\0' };
+ int result, old_alarm, new_alarm;
+
+ if (battery->sbs->zombie) {
+ return -ENODEV;
+ }
+
+ down(&sbs_sem);
+
+ if (!acpi_battery_is_present(battery)) {
+ 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_set_alarm() failed\n"));
+ (void)acpi_battery_set_alarm(battery, old_alarm);
+ goto end;
+ }
+ result = acpi_battery_get_alarm(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_get_alarm() failed\n"));
+ (void)acpi_battery_set_alarm(battery, old_alarm);
+ goto end;
+ }
+
+ end:
+ up(&sbs_sem);
+
+ 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 = (struct acpi_sbs *)seq->private;
+ int result;
+
+ if (sbs->zombie) {
+ return -ENODEV;
+ }
+
+ down(&sbs_sem);
+
+ if (update_mode == REQUEST_UPDATE_MODE) {
+ result = acpi_sbs_update_run(sbs, DATA_TYPE_AC_STATE);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_update_run() failed\n"));
+ }
+ }
+
+ seq_printf(seq, "state: %s\n",
+ sbs->ac_present ? "on-line" : "off-line");
+
+ up(&sbs_sem);
+
+ 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_select() failed\n"));
+ goto end;
+ }
+
+ result = acpi_battery_get_present(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_get_present() failed\n"));
+ goto end;
+ }
+
+ is_present = acpi_battery_is_present(battery);
+
+ if (is_present) {
+ result = acpi_battery_init(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_init() failed\n"));
+ goto end;
+ }
+ battery->init_state = 1;
+ }
+
+ (void)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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_generic_add_fs() failed\n"));
+ goto end;
+ }
+ battery->alive = 1;
+
+ 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_ac_get_present() failed\n"));
+ 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_generic_add_fs() failed\n"));
+ goto end;
+ }
+
+ 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_queue_run(unsigned long data)
+{
+ acpi_os_execute(OSL_GPE_HANDLER, acpi_sbs_update_queue, (void *)data);
+}
+
+static int acpi_sbs_update_run(struct acpi_sbs *sbs, int data_type)
+{
+ struct acpi_battery *battery;
+ int result = 0;
+ int old_ac_present;
+ int old_battery_present;
+ int new_ac_present;
+ int new_battery_present;
+ int id;
+ char dir_name[32];
+ int do_battery_init, do_ac_init;
+ s16 old_remaining_capacity;
+
+ if (sbs->zombie) {
+ goto end;
+ }
+
+ old_ac_present = acpi_ac_is_present(sbs);
+
+ result = acpi_ac_get_present(sbs);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_ac_get_present() failed\n"));
+ }
+
+ new_ac_present = acpi_ac_is_present(sbs);
+
+ do_ac_init = (old_ac_present != new_ac_present);
+
+ if (data_type == DATA_TYPE_AC_STATE) {
+ goto end;
+ }
+
+ for (id = 0; id < MAX_SBS_BAT; id++) {
+ battery = &sbs->battery[id];
+ if (battery->alive == 0) {
+ continue;
+ }
+
+ old_remaining_capacity = battery->state.remaining_capacity;
+
+ old_battery_present = acpi_battery_is_present(battery);
+
+ result = acpi_battery_select(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_select() failed\n"));
+ }
+ if (sbs->zombie) {
+ goto end;
+ }
+
+ result = acpi_battery_get_present(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_get_present() failed\n"));
+ }
+ if (sbs->zombie) {
+ goto end;
+ }
+
+ new_battery_present = acpi_battery_is_present(battery);
+
+ do_battery_init = ((old_battery_present != new_battery_present)
+ && new_battery_present);
+
+ if (sbs->zombie) {
+ goto end;
+ }
+ if (do_ac_init || do_battery_init ||
+ update_info_mode || sbs->update_info_mode) {
+ if (sbs->update_info_mode) {
+ sbs->update_info_mode = 0;
+ } else {
+ sbs->update_info_mode = 1;
+ }
+ result = acpi_battery_init(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_init() "
+ "failed\n"));
+ }
+ }
+ if (data_type == DATA_TYPE_INFO) {
+ continue;
+ }
+
+ if (sbs->zombie) {
+ goto end;
+ }
+ if (new_battery_present) {
+ result = acpi_battery_get_alarm(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_get_alarm() "
+ "failed\n"));
+ }
+ if (data_type == DATA_TYPE_ALARM) {
+ continue;
+ }
+
+ result = acpi_battery_get_state(battery);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_get_state() "
+ "failed\n"));
+ }
+ }
+ if (sbs->zombie) {
+ goto end;
+ }
+ if (data_type != DATA_TYPE_COMMON) {
+ continue;
+ }
+
+ if (old_battery_present != new_battery_present) {
+ (void)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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_generate_event() "
+ "failed\n"));
+ }
+ }
+ if (old_remaining_capacity != battery->state.remaining_capacity) {
+ (void)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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_generate_event() failed\n"));
+ }
+ }
+
+ }
+ if (sbs->zombie) {
+ goto end;
+ }
+ if (data_type != DATA_TYPE_COMMON) {
+ goto end;
+ }
+
+ if (old_ac_present != new_ac_present) {
+ 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_generate_event() failed\n"));
+ }
+ }
+
+ end:
+ return result;
+}
+
+static void acpi_sbs_update_queue(void *data)
+{
+ struct acpi_sbs *sbs = data;
+ unsigned long delay = -1;
+ int result;
+
+ if (sbs->zombie) {
+ goto end;
+ }
+
+ result = acpi_sbs_update_run(sbs, DATA_TYPE_COMMON);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_update_run() failed\n"));
+ }
+
+ if (sbs->zombie) {
+ goto end;
+ }
+
+ if (update_mode == REQUEST_UPDATE_MODE) {
+ goto end;
+ }
+
+ delay = jiffies + HZ * update_time;
+ sbs->update_timer.data = (unsigned long)data;
+ sbs->update_timer.function = acpi_sbs_update_queue_run;
+ sbs->update_timer.expires = delay;
+ add_timer(&sbs->update_timer);
+ end:
+ ;
+}
+
+static int acpi_sbs_add(struct acpi_device *device)
+{
+ struct acpi_sbs *sbs = NULL;
+ struct acpi_ec_hc *ec_hc = NULL;
+ int result, remove_result = 0;
+ unsigned long sbs_obj;
+ int id, cnt;
+ acpi_status status = AE_OK;
+
+ sbs = kmalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
+ if (!sbs) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "kmalloc() failed\n"));
+ return -ENOMEM;
+ }
+ memset(sbs, 0, sizeof(struct acpi_sbs));
+
+ cnt = 0;
+ while (cnt < 10) {
+ cnt++;
+ ec_hc = acpi_get_ec_hc(device);
+ if (ec_hc) {
+ break;
+ }
+ msleep(1000);
+ }
+
+ if (!ec_hc) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_get_ec_hc() failed: "
+ "NO driver found for EC HC SMBus\n"));
+ result = -ENODEV;
+ goto end;
+ }
+
+ sbs->device = device;
+ sbs->smbus = ec_hc->smbus;
+
+ strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
+ strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
+ acpi_driver_data(device) = sbs;
+
+ sbs->update_time = 0;
+ sbs->update_time2 = 0;
+
+ result = acpi_ac_add(sbs);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "acpi_ac_add() failed\n"));
+ goto end;
+ }
+ result = acpi_evaluate_integer(device->handle, "_SBS", NULL, &sbs_obj);
+ if (ACPI_FAILURE(result)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_evaluate_integer() failed\n"));
+ result = -EIO;
+ goto end;
+ }
+
+ if (sbs_obj > 0) {
+ result = acpi_sbsm_get_info(sbs);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbsm_get_info() failed\n"));
+ goto end;
+ }
+ sbs->sbsm_present = 1;
+ }
+ if (sbs->sbsm_present == 0) {
+ result = acpi_battery_add(sbs, 0);
+ if (result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_add() failed\n"));
+ 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_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_battery_add() "
+ "failed\n"));
+ goto end;
+ }
+ }
+ }
+ }
+
+ sbs->handle = device->handle;
+
+ init_timer(&sbs->update_timer);
+ if (update_mode == QUEUE_UPDATE_MODE) {
+ status = acpi_os_execute(OSL_GPE_HANDLER,
+ acpi_sbs_update_queue, (void *)sbs);
+ if (status != AE_OK) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_os_execute() failed\n"));
+ }
+ }
+ sbs->update_time = update_time;
+ sbs->update_time2 = update_time2;
+
+ printk(KERN_INFO PREFIX "%s [%s]\n",
+ acpi_device_name(device), acpi_device_bid(device));
+
+ end:
+ if (result) {
+ remove_result = acpi_sbs_remove(device, 0);
+ if (remove_result) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_sbs_remove() failed\n"));
+ }
+ }
+
+ return result;
+}
+
+int acpi_sbs_remove(struct acpi_device *device, int type)
+{
+ struct acpi_sbs *sbs = (struct acpi_sbs *)acpi_driver_data(device);
+ int id;
+
+ if (!device || !sbs) {
+ return -EINVAL;
+ }
+
+ sbs->zombie = 1;
+ sbs->update_time = 0;
+ sbs->update_time2 = 0;
+ 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);
+
+ kfree(sbs);
+
+ return 0;
+}
+
+static int __init acpi_sbs_init(void)
+{
+ int result = 0;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ init_MUTEX(&sbs_sem);
+
+ if (capacity_mode != DEF_CAPACITY_UNIT
+ && capacity_mode != MAH_CAPACITY_UNIT
+ && capacity_mode != MWH_CAPACITY_UNIT) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "acpi_sbs_init: "
+ "invalid capacity_mode = %d\n",
+ capacity_mode));
+ return -EINVAL;
+ }
+
+ acpi_ac_dir = acpi_lock_ac_dir();
+ if (!acpi_ac_dir) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_lock_ac_dir() failed\n"));
+ return -ENODEV;
+ }
+
+ acpi_battery_dir = acpi_lock_battery_dir();
+ if (!acpi_battery_dir) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_lock_battery_dir() failed\n"));
+ return -ENODEV;
+ }
+
+ result = acpi_bus_register_driver(&acpi_sbs_driver);
+ if (result < 0) {
+ ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+ "acpi_bus_register_driver() failed\n"));
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit acpi_sbs_exit(void)
+{
+
+ acpi_bus_unregister_driver(&acpi_sbs_driver);
+
+ acpi_unlock_ac_dir(acpi_ac_dir);
+ acpi_ac_dir = NULL;
+ acpi_unlock_battery_dir(acpi_battery_dir);
+ acpi_battery_dir = NULL;
+
+ return;
+}
+
+module_init(acpi_sbs_init);
+module_exit(acpi_sbs_exit);
git://git.onelab.eu / linux-2.6.git / blobdiff