#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
-#define ACPI_THERMAL_COMPONENT 0x04000000
#define ACPI_THERMAL_CLASS "thermal_zone"
#define ACPI_THERMAL_DEVICE_NAME "Thermal Zone"
#define ACPI_THERMAL_FILE_STATE "state"
};
static const struct file_operations acpi_thermal_state_fops = {
+ .owner = THIS_MODULE,
.open = acpi_thermal_state_open_fs,
.read = seq_read,
.llseek = seq_lseek,
};
static const struct file_operations acpi_thermal_temp_fops = {
+ .owner = THIS_MODULE,
.open = acpi_thermal_temp_open_fs,
.read = seq_read,
.llseek = seq_lseek,
};
static const struct file_operations acpi_thermal_trip_fops = {
+ .owner = THIS_MODULE,
.open = acpi_thermal_trip_open_fs,
.read = seq_read,
.llseek = seq_lseek,
};
static const struct file_operations acpi_thermal_cooling_fops = {
+ .owner = THIS_MODULE,
.open = acpi_thermal_cooling_open_fs,
.read = seq_read,
.write = acpi_thermal_write_cooling_mode,
};
static const struct file_operations acpi_thermal_polling_fops = {
+ .owner = THIS_MODULE,
.open = acpi_thermal_polling_open_fs,
.read = seq_read,
.write = acpi_thermal_write_polling,
static int acpi_thermal_get_temperature(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
-
+ unsigned long long tmp;
if (!tz)
return -EINVAL;
tz->last_temperature = tz->temperature;
- status =
- acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tz->temperature);
+ status = acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tmp);
if (ACPI_FAILURE(status))
return -ENODEV;
+ tz->temperature = tmp;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n",
tz->temperature));
static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
-
+ unsigned long long tmp;
if (!tz)
return -EINVAL;
- status =
- acpi_evaluate_integer(tz->device->handle, "_TZP", NULL,
- &tz->polling_frequency);
+ status = acpi_evaluate_integer(tz->device->handle, "_TZP", NULL, &tmp);
if (ACPI_FAILURE(status))
return -ENODEV;
+ tz->polling_frequency = tmp;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency is %lu dS\n",
tz->polling_frequency));
static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
{
acpi_status status = AE_OK;
+ unsigned long long tmp;
struct acpi_handle_list devices;
int valid = 0;
int i;
/* Critical Shutdown (required) */
if (flag & ACPI_TRIPS_CRITICAL) {
status = acpi_evaluate_integer(tz->device->handle,
- "_CRT", NULL, &tz->trips.critical.temperature);
- if (ACPI_FAILURE(status)) {
+ "_CRT", NULL, &tmp);
+ tz->trips.critical.temperature = tmp;
+ /*
+ * Treat freezing temperatures as invalid as well; some
+ * BIOSes return really low values and cause reboots at startup.
+ * Below zero (Celcius) values clearly aren't right for sure..
+ * ... so lets discard those as invalid.
+ */
+ if (ACPI_FAILURE(status) ||
+ tz->trips.critical.temperature <= 2732) {
tz->trips.critical.flags.valid = 0;
ACPI_EXCEPTION((AE_INFO, status,
- "No critical threshold"));
+ "No or invalid critical threshold"));
return -ENODEV;
} else {
tz->trips.critical.flags.valid = 1;
} else if (crt > 0) {
unsigned long crt_k = CELSIUS_TO_KELVIN(crt);
/*
- * Allow override to lower critical threshold
+ * Allow override critical threshold
*/
- if (crt_k < tz->trips.critical.temperature)
- tz->trips.critical.temperature = crt_k;
+ if (crt_k > tz->trips.critical.temperature)
+ printk(KERN_WARNING PREFIX
+ "Critical threshold %d C\n", crt);
+ tz->trips.critical.temperature = crt_k;
}
}
}
/* Critical Sleep (optional) */
if (flag & ACPI_TRIPS_HOT) {
status = acpi_evaluate_integer(tz->device->handle,
- "_HOT", NULL, &tz->trips.hot.temperature);
+ "_HOT", NULL, &tmp);
if (ACPI_FAILURE(status)) {
tz->trips.hot.flags.valid = 0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No hot threshold\n"));
} else {
+ tz->trips.hot.temperature = tmp;
tz->trips.hot.flags.valid = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found hot threshold [%lu]\n",
}
/* Passive (optional) */
- if (flag & ACPI_TRIPS_PASSIVE) {
+ if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips.passive.flags.valid) ||
+ (flag == ACPI_TRIPS_INIT)) {
valid = tz->trips.passive.flags.valid;
if (psv == -1) {
status = AE_SUPPORT;
} else if (psv > 0) {
- tz->trips.passive.temperature = CELSIUS_TO_KELVIN(psv);
+ tmp = CELSIUS_TO_KELVIN(psv);
status = AE_OK;
} else {
status = acpi_evaluate_integer(tz->device->handle,
- "_PSV", NULL, &tz->trips.passive.temperature);
+ "_PSV", NULL, &tmp);
}
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
else {
+ tz->trips.passive.temperature = tmp;
tz->trips.passive.flags.valid = 1;
if (flag == ACPI_TRIPS_INIT) {
status = acpi_evaluate_integer(
tz->device->handle, "_TC1",
- NULL, &tz->trips.passive.tc1);
+ NULL, &tmp);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
+ else
+ tz->trips.passive.tc1 = tmp;
status = acpi_evaluate_integer(
tz->device->handle, "_TC2",
- NULL, &tz->trips.passive.tc2);
+ NULL, &tmp);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
+ else
+ tz->trips.passive.tc2 = tmp;
status = acpi_evaluate_integer(
tz->device->handle, "_TSP",
- NULL, &tz->trips.passive.tsp);
+ NULL, &tmp);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
+ else
+ tz->trips.passive.tsp = tmp;
}
}
}
memset(&devices, 0, sizeof(struct acpi_handle_list));
status = acpi_evaluate_reference(tz->device->handle, "_PSL",
NULL, &devices);
- if (ACPI_FAILURE(status))
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_WARNING PREFIX
+ "Invalid passive threshold\n");
tz->trips.passive.flags.valid = 0;
+ }
else
tz->trips.passive.flags.valid = 1;
if (act == -1)
break; /* disable all active trip points */
- if (flag & ACPI_TRIPS_ACTIVE) {
+ if ((flag == ACPI_TRIPS_INIT) || ((flag & ACPI_TRIPS_ACTIVE) &&
+ tz->trips.active[i].flags.valid)) {
status = acpi_evaluate_integer(tz->device->handle,
- name, NULL, &tz->trips.active[i].temperature);
+ name, NULL, &tmp);
if (ACPI_FAILURE(status)) {
tz->trips.active[i].flags.valid = 0;
if (i == 0)
tz->trips.active[i - 2].temperature :
CELSIUS_TO_KELVIN(act));
break;
- } else
+ } else {
+ tz->trips.active[i].temperature = tmp;
tz->trips.active[i].flags.valid = 1;
+ }
}
name[2] = 'L';
memset(&devices, 0, sizeof(struct acpi_handle_list));
status = acpi_evaluate_reference(tz->device->handle,
name, NULL, &devices);
- if (ACPI_FAILURE(status))
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_WARNING PREFIX
+ "Invalid active%d threshold\n", i);
tz->trips.active[i].flags.valid = 0;
+ }
else
tz->trips.active[i].flags.valid = 1;
acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
tz->trips.critical.flags.enabled);
acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
- tz->device->dev.bus_id,
+ dev_name(&tz->device->dev),
ACPI_THERMAL_NOTIFY_CRITICAL,
tz->trips.critical.flags.enabled);
acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
tz->trips.hot.flags.enabled);
acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
- tz->device->dev.bus_id,
+ dev_name(&tz->device->dev),
ACPI_THERMAL_NOTIFY_HOT,
tz->trips.hot.flags.enabled);
acpi_os_execute(OSL_GPE_HANDLER, acpi_thermal_check, (void *)data);
}
+static void acpi_thermal_active_off(void *data)
+{
+ int result = 0;
+ struct acpi_thermal *tz = data;
+ int i = 0;
+ int j = 0;
+ struct acpi_thermal_active *active = NULL;
+
+ if (!tz) {
+ printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
+ return;
+ }
+
+ result = acpi_thermal_get_temperature(tz);
+ if (result)
+ return;
+
+ for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
+ active = &(tz->trips.active[i]);
+ if (!active || !active->flags.valid)
+ break;
+ if (tz->temperature >= active->temperature) {
+ /*
+ * If the thermal temperature is greater than the
+ * active threshod, unnecessary to turn off the
+ * the active cooling device.
+ */
+ continue;
+ }
+ /*
+ * Below Threshold?
+ * ----------------
+ * Turn OFF all cooling devices associated with this
+ * threshold.
+ */
+ for (j = 0; j < active->devices.count; j++)
+ result = acpi_bus_set_power(active->devices.handles[j],
+ ACPI_STATE_D3);
+ }
+}
+
static void acpi_thermal_check(void *data)
{
int result = 0;
static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
{
struct acpi_thermal *tz = thermal->devdata;
+ int result;
if (!tz)
return -EINVAL;
+ result = acpi_thermal_get_temperature(tz);
+ if (result)
+ return result;
+
return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(tz->temperature));
}
return -EINVAL;
}
+static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
+ unsigned long *temperature) {
+ struct acpi_thermal *tz = thermal->devdata;
+
+ if (tz->trips.critical.flags.valid) {
+ *temperature = KELVIN_TO_MILLICELSIUS(
+ tz->trips.critical.temperature);
+ return 0;
+ } else
+ return -EINVAL;
+}
+
typedef int (*cb)(struct thermal_zone_device *, int,
struct thermal_cooling_device *);
static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
.set_mode = thermal_set_mode,
.get_trip_type = thermal_get_trip_type,
.get_trip_temp = thermal_get_trip_temp,
+ .get_crit_temp = thermal_get_crit_temp,
};
static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
tz->trips.active[i].flags.valid; i++, trips++);
- tz->thermal_zone = thermal_zone_device_register("ACPI thermal zone",
+ tz->thermal_zone = thermal_zone_device_register("acpitz",
trips, tz, &acpi_thermal_zone_ops);
if (IS_ERR(tz->thermal_zone))
return -ENODEV;
acpi_bus_private_data_handler,
tz->thermal_zone);
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error attaching device data\n"));
+ printk(KERN_ERR PREFIX
+ "Error attaching device data\n");
return -ENODEV;
}
tz->tz_enabled = 1;
- printk(KERN_INFO PREFIX "%s is registered as thermal_zone%d\n",
- tz->device->dev.bus_id, tz->thermal_zone->id);
+ dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
+ tz->thermal_zone->id);
return 0;
}
}
/* 'state' [R] */
- entry = create_proc_entry(ACPI_THERMAL_FILE_STATE,
- S_IRUGO, acpi_device_dir(device));
+ entry = proc_create_data(ACPI_THERMAL_FILE_STATE,
+ S_IRUGO, acpi_device_dir(device),
+ &acpi_thermal_state_fops,
+ acpi_driver_data(device));
if (!entry)
return -ENODEV;
- else {
- entry->proc_fops = &acpi_thermal_state_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
/* 'temperature' [R] */
- entry = create_proc_entry(ACPI_THERMAL_FILE_TEMPERATURE,
- S_IRUGO, acpi_device_dir(device));
+ entry = proc_create_data(ACPI_THERMAL_FILE_TEMPERATURE,
+ S_IRUGO, acpi_device_dir(device),
+ &acpi_thermal_temp_fops,
+ acpi_driver_data(device));
if (!entry)
return -ENODEV;
- else {
- entry->proc_fops = &acpi_thermal_temp_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
/* 'trip_points' [R] */
- entry = create_proc_entry(ACPI_THERMAL_FILE_TRIP_POINTS,
- S_IRUGO,
- acpi_device_dir(device));
+ entry = proc_create_data(ACPI_THERMAL_FILE_TRIP_POINTS,
+ S_IRUGO,
+ acpi_device_dir(device),
+ &acpi_thermal_trip_fops,
+ acpi_driver_data(device));
if (!entry)
return -ENODEV;
- else {
- entry->proc_fops = &acpi_thermal_trip_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
/* 'cooling_mode' [R/W] */
- entry = create_proc_entry(ACPI_THERMAL_FILE_COOLING_MODE,
- S_IFREG | S_IRUGO | S_IWUSR,
- acpi_device_dir(device));
+ entry = proc_create_data(ACPI_THERMAL_FILE_COOLING_MODE,
+ S_IFREG | S_IRUGO | S_IWUSR,
+ acpi_device_dir(device),
+ &acpi_thermal_cooling_fops,
+ acpi_driver_data(device));
if (!entry)
return -ENODEV;
- else {
- entry->proc_fops = &acpi_thermal_cooling_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
/* 'polling_frequency' [R/W] */
- entry = create_proc_entry(ACPI_THERMAL_FILE_POLLING_FREQ,
- S_IFREG | S_IRUGO | S_IWUSR,
- acpi_device_dir(device));
+ entry = proc_create_data(ACPI_THERMAL_FILE_POLLING_FREQ,
+ S_IFREG | S_IRUGO | S_IWUSR,
+ acpi_device_dir(device),
+ &acpi_thermal_polling_fops,
+ acpi_driver_data(device));
if (!entry)
return -ENODEV;
- else {
- entry->proc_fops = &acpi_thermal_polling_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
-
return 0;
}
acpi_thermal_check(tz);
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event, 0);
+ dev_name(&device->dev), event, 0);
break;
case ACPI_THERMAL_NOTIFY_DEVICES:
acpi_thermal_trips_update(tz, ACPI_TRIPS_REFRESH_DEVICES);
acpi_thermal_check(tz);
acpi_bus_generate_proc_event(device, event, 0);
acpi_bus_generate_netlink_event(device->pnp.device_class,
- device->dev.bus_id, event, 0);
+ dev_name(&device->dev), event, 0);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
strcpy(tz->name, device->pnp.bus_id);
strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
- acpi_driver_data(device) = tz;
+ device->driver_data = tz;
mutex_init(&tz->lock);
init_timer(&tz->timer);
+ acpi_thermal_active_off(tz);
+
acpi_thermal_check(tz);
status = acpi_install_notify_handler(device->handle,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff