static int
acpi_battery_read_state (
char *page,
char **start,
off_t off,
int count,
int *eof,
void *data)
{
int result = 0;
struct acpi_battery *battery = (struct acpi_battery *) data;
struct acpi_battery_status *bst = NULL;
char *units = "?";
char *p = page;
int len = 0;
ACPI_FUNCTION_TRACE("acpi_battery_read_state");
if (!battery || (off != 0))
goto end;
if (battery->flags.present)
p += sprintf(p, "present: yes\n");
else {
p += sprintf(p, "present: no\n");
goto end;
}
/* Battery Units */
units = battery->flags.power_unit ? ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS;
/* Battery Status (_BST) */
result = acpi_battery_get_status(battery, &bst);
if (result || !bst) {
p += sprintf(p, "ERROR: Unable to read battery status\n");
goto end;
}
if (!(bst->state & 0x04))
p += sprintf(p, "capacity state: ok\n");
else
p += sprintf(p, "capacity state: critical\n");
if ((bst->state & 0x01) && (bst->state & 0x02)){
p += sprintf(p, "charging state: charging/discharging\n");
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
"Battery Charging and Discharging?\n"));
}
else if (bst->state & 0x01)
p += sprintf(p, "charging state: discharging\n");
else if (bst->state & 0x02)
p += sprintf(p, "charging state: charging\n");
else {
p += sprintf(p, "charging state: charged\n");
}
if (bst->present_rate == ACPI_BATTERY_VALUE_UNKNOWN)
p += sprintf(p, "present rate: unknown\n");
else
p += sprintf(p, "present rate: %d %s\n",
(u32) bst->present_rate, units);
if (bst->remaining_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
p += sprintf(p, "remaining capacity: unknown\n");
else
p += sprintf(p, "remaining capacity: %d %sh\n",
(u32) bst->remaining_capacity, units);
if (bst->present_voltage == ACPI_BATTERY_VALUE_UNKNOWN)
p += sprintf(p, "present voltage: unknown\n");
else
p += sprintf(p, "present voltage: %d mV\n",
(u32) bst->present_voltage);
end:
kfree(bst);
len = (p - page);
if (len <= off+count) *eof = 1;
*start = page + off;
len -= off;
if (len>count) len = count;
if (len<0) len = 0;
return_VALUE(len);
}
static int acpi_battery_read_state(struct seq_file *seq, void *offset)
{
int result = 0;
struct acpi_battery *battery = (struct acpi_battery *)seq->private;
struct acpi_battery_status *bst = NULL;
char *units = "?";
if (!battery)
goto end;
if (battery->flags.present)
seq_printf(seq, "present: yes\n");
else {
seq_printf(seq, "present: no\n");
goto end;
}
/* Battery Units */
units =
battery->flags.
power_unit ? ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS;
/* Battery Status (_BST) */
result = acpi_battery_get_status(battery, &bst);
if (result || !bst) {
seq_printf(seq, "ERROR: Unable to read battery status\n");
goto end;
}
if (!(bst->state & 0x04))
seq_printf(seq, "capacity state: ok\n");
else
seq_printf(seq, "capacity state: critical\n");
if ((bst->state & 0x01) && (bst->state & 0x02)) {
seq_printf(seq,
"charging state: charging/discharging\n");
} else if (bst->state & 0x01)
seq_printf(seq, "charging state: discharging\n");
else if (bst->state & 0x02)
seq_printf(seq, "charging state: charging\n");
else {
seq_printf(seq, "charging state: charged\n");
}
if (bst->present_rate == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "present rate: unknown\n");
else
seq_printf(seq, "present rate: %d %s\n",
(u32) bst->present_rate, units);
if (bst->remaining_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "remaining capacity: unknown\n");
else
seq_printf(seq, "remaining capacity: %d %sh\n",
(u32) bst->remaining_capacity, units);
if (bst->present_voltage == ACPI_BATTERY_VALUE_UNKNOWN)
seq_printf(seq, "present voltage: unknown\n");
else
seq_printf(seq, "present voltage: %d mV\n",
(u32) bst->present_voltage);
end:
kfree(bst);
return 0;
}
