#define ACPI_THERMAL_NOTIFY_HOT 0xF1
#define ACPI_THERMAL_MODE_ACTIVE 0x00
#define ACPI_THERMAL_MODE_PASSIVE 0x01
+#define ACPI_THERMAL_MODE_CRITICAL 0xff
#define ACPI_THERMAL_PATH_POWEROFF "/sbin/poweroff"
#define ACPI_THERMAL_MAX_ACTIVE 10
+#define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65
#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732>=0) ? ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
#define CELSIUS_TO_KELVIN(t) ((t+273)*10)
MODULE_LICENSE("GPL");
static int tzp;
-MODULE_PARM(tzp, "i");
+module_param(tzp, int, 0);
MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
unsigned long last_temperature;
unsigned long polling_frequency;
u8 cooling_mode;
+ volatile u8 zombie;
struct acpi_thermal_flags flags;
struct acpi_thermal_state state;
struct acpi_thermal_trips trips;
status = acpi_evaluate_integer(tz->handle, "_TMP", NULL, &tz->temperature);
if (ACPI_FAILURE(status))
- return -ENODEV;
+ return_VALUE(-ENODEV);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n", tz->temperature));
if (ACPI_FAILURE(status)) {
tz->trips.critical.flags.valid = 0;
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "No critical threshold\n"));
- return -ENODEV;
+ return_VALUE(-ENODEV);
}
else {
tz->trips.critical.flags.valid = 1;
acpi_thermal_run (
unsigned long data)
{
- acpi_os_queue_for_execution(OSD_PRIORITY_GPE, acpi_thermal_check, (void *) data);
+ struct acpi_thermal *tz = (struct acpi_thermal *)data;
+ if (!tz->zombie)
+ acpi_os_queue_for_execution(OSD_PRIORITY_GPE,
+ acpi_thermal_check, (void *) data);
}
struct acpi_thermal *tz = (struct acpi_thermal *) data;
unsigned long sleep_time = 0;
int i = 0;
- struct acpi_thermal_state state = tz->state;
+ struct acpi_thermal_state state;
ACPI_FUNCTION_TRACE("acpi_thermal_check");
return_VOID;
}
+ state = tz->state;
+
result = acpi_thermal_get_temperature(tz);
if (result)
return_VOID;
}
end:
- return 0;
+ return_VALUE(0);
}
static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file)
KELVIN_TO_CELSIUS(tz->temperature));
end:
- return 0;
+ return_VALUE(0);
}
static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file)
}
end:
- return 0;
+ return_VALUE(0);
}
static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file)
struct seq_file *m = (struct seq_file *)file->private_data;
struct acpi_thermal *tz = (struct acpi_thermal *)m->private;
- char limit_string[25] = {'\0'};
- int critical, hot, passive, active0, active1;
+ char *limit_string;
+ int num, critical, hot, passive;
+ int *active;
+ int i = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_write_trip_points");
- if (!tz || (count > sizeof(limit_string) - 1)) {
+ limit_string = kmalloc(ACPI_THERMAL_MAX_LIMIT_STR_LEN, GFP_KERNEL);
+ if(!limit_string)
+ return_VALUE(-ENOMEM);
+
+ memset(limit_string, 0, ACPI_THERMAL_MAX_LIMIT_STR_LEN);
+
+ active = kmalloc(ACPI_THERMAL_MAX_ACTIVE *sizeof(int), GFP_KERNEL);
+ if(!active)
+ return_VALUE(-ENOMEM);
+
+ if (!tz || (count > ACPI_THERMAL_MAX_LIMIT_STR_LEN - 1)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid argument\n"));
- return_VALUE(-EINVAL);
+ count = -EINVAL;
+ goto end;
}
if (copy_from_user(limit_string, buffer, count)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data\n"));
- return_VALUE(-EFAULT);
+ count = -EFAULT;
+ goto end;
}
limit_string[count] = '\0';
- if (sscanf(limit_string, "%d:%d:%d:%d:%d", &critical, &hot, &passive, &active0, &active1) != 5) {
+ num = sscanf(limit_string, "%d:%d:%d:%d:%d:%d:%d:%d:%d:%d:%d:%d:%d",
+ &critical, &hot, &passive,
+ &active[0], &active[1], &active[2], &active[3], &active[4],
+ &active[5], &active[6], &active[7], &active[8], &active[9]);
+ if(!(num >=5 && num < (ACPI_THERMAL_MAX_ACTIVE + 3))) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data format\n"));
- return_VALUE(-EINVAL);
+ count = -EINVAL;
+ goto end;
}
tz->trips.critical.temperature = CELSIUS_TO_KELVIN(critical);
tz->trips.hot.temperature = CELSIUS_TO_KELVIN(hot);
tz->trips.passive.temperature = CELSIUS_TO_KELVIN(passive);
- tz->trips.active[0].temperature = CELSIUS_TO_KELVIN(active0);
- tz->trips.active[1].temperature = CELSIUS_TO_KELVIN(active1);
+ for (i = 0; i < num - 3; i++) {
+ if (!(tz->trips.active[i].flags.valid))
+ break;
+ tz->trips.active[i].temperature = CELSIUS_TO_KELVIN(active[i]);
+ }
+end:
+ kfree(active);
+ kfree(limit_string);
return_VALUE(count);
}
goto end;
if (!tz->flags.cooling_mode) {
- seq_puts(seq, "<not supported>\n");
- goto end;
+ seq_puts(seq, "<setting not supported>\n");
}
- seq_printf(seq, "cooling mode: %s\n",
- tz->cooling_mode?"passive":"active");
+ if ( tz->cooling_mode == ACPI_THERMAL_MODE_CRITICAL )
+ seq_printf(seq, "cooling mode: critical\n");
+ else
+ seq_printf(seq, "cooling mode: %s\n",
+ tz->cooling_mode?"passive":"active");
end:
- return 0;
+ return_VALUE(0);
}
static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file)
if (result)
return_VALUE(result);
+ acpi_thermal_check(tz);
+
return_VALUE(count);
}
(tz->polling_frequency / 10));
end:
- return 0;
+ return_VALUE(0);
}
static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file)
if (result)
return_VALUE(result);
- /* Set the cooling mode [_SCP] to active cooling (default) */
- result = acpi_thermal_set_cooling_mode(tz, ACPI_THERMAL_MODE_ACTIVE);
- if (!result)
- tz->flags.cooling_mode = 1;
-
/* Get trip points [_CRT, _PSV, etc.] (required) */
result = acpi_thermal_get_trip_points(tz);
if (result)
return_VALUE(result);
+ /* Set the cooling mode [_SCP] to active cooling (default) */
+ result = acpi_thermal_set_cooling_mode(tz, ACPI_THERMAL_MODE_ACTIVE);
+ if (!result)
+ tz->flags.cooling_mode = 1;
+ else {
+ /* Oh,we have not _SCP method.
+ Generally show cooling_mode by _ACx, _PSV,spec 12.2*/
+ tz->flags.cooling_mode = 0;
+ if ( tz->trips.active[0].flags.valid && tz->trips.passive.flags.valid ) {
+ if ( tz->trips.passive.temperature > tz->trips.active[0].temperature )
+ tz->cooling_mode = ACPI_THERMAL_MODE_ACTIVE;
+ else
+ tz->cooling_mode = ACPI_THERMAL_MODE_PASSIVE;
+ } else if ( !tz->trips.active[0].flags.valid && tz->trips.passive.flags.valid ) {
+ tz->cooling_mode = ACPI_THERMAL_MODE_PASSIVE;
+ } else if ( tz->trips.active[0].flags.valid && !tz->trips.passive.flags.valid ) {
+ tz->cooling_mode = ACPI_THERMAL_MODE_ACTIVE;
+ } else {
+ /* _ACx and _PSV are optional, but _CRT is required */
+ tz->cooling_mode = ACPI_THERMAL_MODE_CRITICAL;
+ }
+ }
+
/* Get default polling frequency [_TZP] (optional) */
if (tzp)
tz->polling_frequency = tzp;
tz = (struct acpi_thermal *) acpi_driver_data(device);
- if (timer_pending(&(tz->timer)))
- del_timer(&(tz->timer));
+ /* avoid timer adding new defer task */
+ tz->zombie = 1;
+ /* wait for running timer (on other CPUs) finish */
+ del_timer_sync(&(tz->timer));
+ /* synchronize deferred task */
+ acpi_os_wait_events_complete(NULL);
+ /* deferred task may reinsert timer */
+ del_timer_sync(&(tz->timer));
status = acpi_remove_notify_handler(tz->handle,
ACPI_DEVICE_NOTIFY, acpi_thermal_notify);
acpi_thermal_remove_fs(device);
+ kfree(tz);
return_VALUE(0);
}
git://git.onelab.eu / linux-2.6.git / blobdiff