#include <linux/init.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
-#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
#include <linux/kmod.h>
#include <linux/seq_file.h>
+#include <linux/reboot.h>
#include <asm/uaccess.h>
#include <acpi/acpi_bus.h>
#define ACPI_THERMAL_COMPONENT 0x04000000
#define ACPI_THERMAL_CLASS "thermal_zone"
-#define ACPI_THERMAL_DRIVER_NAME "ACPI Thermal Zone Driver"
#define ACPI_THERMAL_DEVICE_NAME "Thermal Zone"
#define ACPI_THERMAL_FILE_STATE "state"
#define ACPI_THERMAL_FILE_TEMPERATURE "temperature"
#define ACPI_THERMAL_NOTIFY_CRITICAL 0xF0
#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 CELSIUS_TO_KELVIN(t) ((t+273)*10)
#define _COMPONENT ACPI_THERMAL_COMPONENT
-ACPI_MODULE_NAME("acpi_thermal")
+ACPI_MODULE_NAME("thermal");
MODULE_AUTHOR("Paul Diefenbaugh");
-MODULE_DESCRIPTION(ACPI_THERMAL_DRIVER_NAME);
+MODULE_DESCRIPTION("ACPI Thermal Zone Driver");
MODULE_LICENSE("GPL");
static int tzp;
static int acpi_thermal_add(struct acpi_device *device);
static int acpi_thermal_remove(struct acpi_device *device, int type);
+static int acpi_thermal_resume(struct acpi_device *device);
static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
-static ssize_t acpi_thermal_write_trip_points(struct file *,
- const char __user *, size_t,
- loff_t *);
static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file);
static ssize_t acpi_thermal_write_cooling_mode(struct file *,
const char __user *, size_t,
static ssize_t acpi_thermal_write_polling(struct file *, const char __user *,
size_t, loff_t *);
+static const struct acpi_device_id thermal_device_ids[] = {
+ {ACPI_THERMAL_HID, 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, thermal_device_ids);
+
static struct acpi_driver acpi_thermal_driver = {
- .name = ACPI_THERMAL_DRIVER_NAME,
+ .name = "thermal",
.class = ACPI_THERMAL_CLASS,
- .ids = ACPI_THERMAL_HID,
+ .ids = thermal_device_ids,
.ops = {
.add = acpi_thermal_add,
.remove = acpi_thermal_remove,
+ .resume = acpi_thermal_resume,
},
};
};
struct acpi_thermal {
- acpi_handle handle;
+ struct acpi_device * device;
acpi_bus_id name;
unsigned long temperature;
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 timer_list timer;
};
-static struct file_operations acpi_thermal_state_fops = {
+static const struct file_operations acpi_thermal_state_fops = {
.open = acpi_thermal_state_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
-static struct file_operations acpi_thermal_temp_fops = {
+static const struct file_operations acpi_thermal_temp_fops = {
.open = acpi_thermal_temp_open_fs,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
-static struct file_operations acpi_thermal_trip_fops = {
+static const struct file_operations acpi_thermal_trip_fops = {
.open = acpi_thermal_trip_open_fs,
.read = seq_read,
- .write = acpi_thermal_write_trip_points,
.llseek = seq_lseek,
.release = single_release,
};
-static struct file_operations acpi_thermal_cooling_fops = {
+static const struct file_operations acpi_thermal_cooling_fops = {
.open = acpi_thermal_cooling_open_fs,
.read = seq_read,
.write = acpi_thermal_write_cooling_mode,
.release = single_release,
};
-static struct file_operations acpi_thermal_polling_fops = {
+static const struct file_operations acpi_thermal_polling_fops = {
.open = acpi_thermal_polling_open_fs,
.read = seq_read,
.write = acpi_thermal_write_polling,
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("acpi_thermal_get_temperature");
if (!tz)
- return_VALUE(-EINVAL);
+ return -EINVAL;
tz->last_temperature = tz->temperature;
status =
- acpi_evaluate_integer(tz->handle, "_TMP", NULL, &tz->temperature);
+ acpi_evaluate_integer(tz->device->handle, "_TMP", NULL, &tz->temperature);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n",
tz->temperature));
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("acpi_thermal_get_polling_frequency");
if (!tz)
- return_VALUE(-EINVAL);
+ return -EINVAL;
status =
- acpi_evaluate_integer(tz->handle, "_TZP", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_TZP", NULL,
&tz->polling_frequency);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency is %lu dS\n",
tz->polling_frequency));
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds)
{
- ACPI_FUNCTION_TRACE("acpi_thermal_set_polling");
if (!tz)
- return_VALUE(-EINVAL);
+ return -EINVAL;
tz->polling_frequency = seconds * 10; /* Convert value to deci-seconds */
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Polling frequency set to %lu seconds\n",
- tz->polling_frequency));
+ tz->polling_frequency/10));
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
struct acpi_object_list arg_list = { 1, &arg0 };
acpi_handle handle = NULL;
- ACPI_FUNCTION_TRACE("acpi_thermal_set_cooling_mode");
if (!tz)
- return_VALUE(-EINVAL);
+ return -EINVAL;
- status = acpi_get_handle(tz->handle, "_SCP", &handle);
+ status = acpi_get_handle(tz->device->handle, "_SCP", &handle);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
arg0.integer.value = mode;
status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
+ return -ENODEV;
- tz->cooling_mode = mode;
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Cooling mode [%s]\n",
- mode ? "passive" : "active"));
-
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
acpi_status status = AE_OK;
int i = 0;
- ACPI_FUNCTION_TRACE("acpi_thermal_get_trip_points");
if (!tz)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* Critical Shutdown (required) */
- status = acpi_evaluate_integer(tz->handle, "_CRT", NULL,
+ status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL,
&tz->trips.critical.temperature);
if (ACPI_FAILURE(status)) {
tz->trips.critical.flags.valid = 0;
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "No critical threshold\n"));
- return_VALUE(-ENODEV);
+ ACPI_EXCEPTION((AE_INFO, status, "No critical threshold"));
+ return -ENODEV;
} else {
tz->trips.critical.flags.valid = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
/* Critical Sleep (optional) */
status =
- acpi_evaluate_integer(tz->handle, "_HOT", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_HOT", NULL,
&tz->trips.hot.temperature);
if (ACPI_FAILURE(status)) {
tz->trips.hot.flags.valid = 0;
/* Passive: Processors (optional) */
status =
- acpi_evaluate_integer(tz->handle, "_PSV", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_PSV", NULL,
&tz->trips.passive.temperature);
if (ACPI_FAILURE(status)) {
tz->trips.passive.flags.valid = 0;
tz->trips.passive.flags.valid = 1;
status =
- acpi_evaluate_integer(tz->handle, "_TC1", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_TC1", NULL,
&tz->trips.passive.tc1);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
status =
- acpi_evaluate_integer(tz->handle, "_TC2", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_TC2", NULL,
&tz->trips.passive.tc2);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
status =
- acpi_evaluate_integer(tz->handle, "_TSP", NULL,
+ acpi_evaluate_integer(tz->device->handle, "_TSP", NULL,
&tz->trips.passive.tsp);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
status =
- acpi_evaluate_reference(tz->handle, "_PSL", NULL,
+ acpi_evaluate_reference(tz->device->handle, "_PSL", NULL,
&tz->trips.passive.devices);
if (ACPI_FAILURE(status))
tz->trips.passive.flags.valid = 0;
if (!tz->trips.passive.flags.valid)
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Invalid passive threshold\n"));
+ printk(KERN_WARNING PREFIX "Invalid passive threshold\n");
else
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found passive threshold [%lu]\n",
char name[5] = { '_', 'A', 'C', ('0' + i), '\0' };
status =
- acpi_evaluate_integer(tz->handle, name, NULL,
+ acpi_evaluate_integer(tz->device->handle, name, NULL,
&tz->trips.active[i].temperature);
if (ACPI_FAILURE(status))
break;
name[2] = 'L';
status =
- acpi_evaluate_reference(tz->handle, name, NULL,
+ acpi_evaluate_reference(tz->device->handle, name, NULL,
&tz->trips.active[i].devices);
if (ACPI_SUCCESS(status)) {
tz->trips.active[i].flags.valid = 1;
"Found active threshold [%d]:[%lu]\n",
i, tz->trips.active[i].temperature));
} else
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Invalid active threshold [%d]\n",
- i));
+ ACPI_EXCEPTION((AE_INFO, status,
+ "Invalid active threshold [%d]", i));
}
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_get_devices(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("acpi_thermal_get_devices");
if (!tz)
- return_VALUE(-EINVAL);
+ return -EINVAL;
status =
- acpi_evaluate_reference(tz->handle, "_TZD", NULL, &tz->devices);
+ acpi_evaluate_reference(tz->device->handle, "_TZD", NULL, &tz->devices);
if (ACPI_FAILURE(status))
- return_VALUE(-ENODEV);
-
- return_VALUE(0);
-}
-
-static int acpi_thermal_call_usermode(char *path)
-{
- char *argv[2] = { NULL, NULL };
- char *envp[3] = { NULL, NULL, NULL };
-
- ACPI_FUNCTION_TRACE("acpi_thermal_call_usermode");
-
- if (!path)
- return_VALUE(-EINVAL);
+ return -ENODEV;
- argv[0] = path;
-
- /* minimal command environment */
- envp[0] = "HOME=/";
- envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
-
- call_usermodehelper(argv[0], argv, envp, 0);
-
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_critical(struct acpi_thermal *tz)
{
- int result = 0;
- struct acpi_device *device = NULL;
-
- ACPI_FUNCTION_TRACE("acpi_thermal_critical");
-
if (!tz || !tz->trips.critical.flags.valid)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (tz->temperature >= tz->trips.critical.temperature) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Critical trip point\n"));
+ printk(KERN_WARNING PREFIX "Critical trip point\n");
tz->trips.critical.flags.enabled = 1;
} else if (tz->trips.critical.flags.enabled)
tz->trips.critical.flags.enabled = 0;
- result = acpi_bus_get_device(tz->handle, &device);
- if (result)
- return_VALUE(result);
-
printk(KERN_EMERG
"Critical temperature reached (%ld C), shutting down.\n",
KELVIN_TO_CELSIUS(tz->temperature));
- acpi_bus_generate_event(device, ACPI_THERMAL_NOTIFY_CRITICAL,
+ acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
tz->trips.critical.flags.enabled);
- acpi_thermal_call_usermode(ACPI_THERMAL_PATH_POWEROFF);
+ orderly_poweroff(true);
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_hot(struct acpi_thermal *tz)
{
- int result = 0;
- struct acpi_device *device = NULL;
-
- ACPI_FUNCTION_TRACE("acpi_thermal_hot");
-
if (!tz || !tz->trips.hot.flags.valid)
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (tz->temperature >= tz->trips.hot.temperature) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Hot trip point\n"));
+ printk(KERN_WARNING PREFIX "Hot trip point\n");
tz->trips.hot.flags.enabled = 1;
} else if (tz->trips.hot.flags.enabled)
tz->trips.hot.flags.enabled = 0;
- result = acpi_bus_get_device(tz->handle, &device);
- if (result)
- return_VALUE(result);
-
- acpi_bus_generate_event(device, ACPI_THERMAL_NOTIFY_HOT,
+ acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
tz->trips.hot.flags.enabled);
/* TBD: Call user-mode "sleep(S4)" function */
- return_VALUE(0);
+ return 0;
}
static void acpi_thermal_passive(struct acpi_thermal *tz)
int trend = 0;
int i = 0;
- ACPI_FUNCTION_TRACE("acpi_thermal_passive");
if (!tz || !tz->trips.passive.flags.valid)
return;
int j = 0;
unsigned long maxtemp = 0;
- ACPI_FUNCTION_TRACE("acpi_thermal_active");
if (!tz)
return;
handles[j],
ACPI_STATE_D0);
if (result) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Unable to turn cooling device [%p] 'on'\n",
- active->devices.
- handles[j]));
+ printk(KERN_WARNING PREFIX
+ "Unable to turn cooling device [%p] 'on'\n",
+ active->devices.
+ handles[j]);
continue;
}
active->flags.enabled = 1;
result = acpi_bus_set_power(active->devices.handles[j],
ACPI_STATE_D3);
if (result) {
- ACPI_DEBUG_PRINT((ACPI_DB_WARN,
- "Unable to turn cooling device [%p] 'off'\n",
- active->devices.handles[j]));
+ printk(KERN_WARNING PREFIX
+ "Unable to turn cooling device [%p] 'off'\n",
+ active->devices.handles[j]);
continue;
}
active->flags.enabled = 0;
{
struct acpi_thermal *tz = (struct acpi_thermal *)data;
if (!tz->zombie)
- acpi_os_queue_for_execution(OSD_PRIORITY_GPE,
- acpi_thermal_check, (void *)data);
+ acpi_os_execute(OSL_GPE_HANDLER, acpi_thermal_check, (void *)data);
}
static void acpi_thermal_check(void *data)
{
int result = 0;
- struct acpi_thermal *tz = (struct acpi_thermal *)data;
+ struct acpi_thermal *tz = data;
unsigned long sleep_time = 0;
int i = 0;
struct acpi_thermal_state state;
- ACPI_FUNCTION_TRACE("acpi_thermal_check");
if (!tz) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid (NULL) context.\n"));
- return_VOID;
+ printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
+ return;
}
state = tz->state;
result = acpi_thermal_get_temperature(tz);
if (result)
- return_VOID;
+ return;
memset(&tz->state, 0, sizeof(tz->state));
del_timer(&(tz->timer));
} else {
if (timer_pending(&(tz->timer)))
- mod_timer(&(tz->timer), (HZ * sleep_time) / 1000);
+ mod_timer(&(tz->timer),
+ jiffies + (HZ * sleep_time) / 1000);
else {
tz->timer.data = (unsigned long)tz;
tz->timer.function = acpi_thermal_run;
}
}
- return_VOID;
+ return;
}
/* --------------------------------------------------------------------------
static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset)
{
- struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
+ struct acpi_thermal *tz = seq->private;
- ACPI_FUNCTION_TRACE("acpi_thermal_state_seq_show");
if (!tz)
goto end;
}
end:
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file)
static int acpi_thermal_temp_seq_show(struct seq_file *seq, void *offset)
{
int result = 0;
- struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
+ struct acpi_thermal *tz = seq->private;
- ACPI_FUNCTION_TRACE("acpi_thermal_temp_seq_show");
if (!tz)
goto end;
KELVIN_TO_CELSIUS(tz->temperature));
end:
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file)
static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
{
- struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
+ struct acpi_thermal *tz = seq->private;
+ struct acpi_device *device;
+ acpi_status status;
+
int i = 0;
int j = 0;
- ACPI_FUNCTION_TRACE("acpi_thermal_trip_seq_show");
if (!tz)
goto end;
tz->trips.passive.tc1, tz->trips.passive.tc2,
tz->trips.passive.tsp);
for (j = 0; j < tz->trips.passive.devices.count; j++) {
-
- seq_printf(seq, "0x%p ",
- tz->trips.passive.devices.handles[j]);
+ status = acpi_bus_get_device(tz->trips.passive.devices.
+ handles[j], &device);
+ seq_printf(seq, "%4.4s ", status ? "" :
+ acpi_device_bid(device));
}
seq_puts(seq, "\n");
}
seq_printf(seq, "active[%d]: %ld C: devices=",
i,
KELVIN_TO_CELSIUS(tz->trips.active[i].temperature));
- for (j = 0; j < tz->trips.active[i].devices.count; j++)
- seq_printf(seq, "0x%p ",
- tz->trips.active[i].devices.handles[j]);
+ for (j = 0; j < tz->trips.active[i].devices.count; j++){
+ status = acpi_bus_get_device(tz->trips.active[i].
+ devices.handles[j],
+ &device);
+ seq_printf(seq, "%4.4s ", status ? "" :
+ acpi_device_bid(device));
+ }
seq_puts(seq, "\n");
}
end:
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file)
return single_open(file, acpi_thermal_trip_seq_show, PDE(inode)->data);
}
-static ssize_t
-acpi_thermal_write_trip_points(struct file *file,
- const char __user * buffer,
- size_t count, loff_t * ppos)
-{
- struct seq_file *m = (struct seq_file *)file->private_data;
- struct acpi_thermal *tz = (struct acpi_thermal *)m->private;
-
- char *limit_string;
- int num, critical, hot, passive;
- int *active;
- int i = 0;
-
- ACPI_FUNCTION_TRACE("acpi_thermal_write_trip_points");
-
- 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"));
- count = -EINVAL;
- goto end;
- }
-
- if (copy_from_user(limit_string, buffer, count)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data\n"));
- count = -EFAULT;
- goto end;
- }
-
- limit_string[count] = '\0';
-
- 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"));
- 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);
- 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);
-}
-
static int acpi_thermal_cooling_seq_show(struct seq_file *seq, void *offset)
{
- struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
+ struct acpi_thermal *tz = seq->private;
- ACPI_FUNCTION_TRACE("acpi_thermal_cooling_seq_show");
if (!tz)
goto end;
- if (!tz->flags.cooling_mode) {
+ if (!tz->flags.cooling_mode)
seq_puts(seq, "<setting not supported>\n");
- }
-
- 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");
+ seq_puts(seq, "0 - Active; 1 - Passive\n");
end:
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file)
const char __user * buffer,
size_t count, loff_t * ppos)
{
- struct seq_file *m = (struct seq_file *)file->private_data;
- struct acpi_thermal *tz = (struct acpi_thermal *)m->private;
+ struct seq_file *m = file->private_data;
+ struct acpi_thermal *tz = m->private;
int result = 0;
char mode_string[12] = { '\0' };
- ACPI_FUNCTION_TRACE("acpi_thermal_write_cooling_mode");
if (!tz || (count > sizeof(mode_string) - 1))
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (!tz->flags.cooling_mode)
- return_VALUE(-ENODEV);
+ return -ENODEV;
if (copy_from_user(mode_string, buffer, count))
- return_VALUE(-EFAULT);
+ return -EFAULT;
mode_string[count] = '\0';
simple_strtoul(mode_string, NULL,
0));
if (result)
- return_VALUE(result);
+ return result;
acpi_thermal_check(tz);
- return_VALUE(count);
+ return count;
}
static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset)
{
- struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
+ struct acpi_thermal *tz = seq->private;
- ACPI_FUNCTION_TRACE("acpi_thermal_polling_seq_show");
if (!tz)
goto end;
(tz->polling_frequency / 10));
end:
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file)
const char __user * buffer,
size_t count, loff_t * ppos)
{
- struct seq_file *m = (struct seq_file *)file->private_data;
- struct acpi_thermal *tz = (struct acpi_thermal *)m->private;
+ struct seq_file *m = file->private_data;
+ struct acpi_thermal *tz = m->private;
int result = 0;
char polling_string[12] = { '\0' };
int seconds = 0;
- ACPI_FUNCTION_TRACE("acpi_thermal_write_polling");
if (!tz || (count > sizeof(polling_string) - 1))
- return_VALUE(-EINVAL);
+ return -EINVAL;
if (copy_from_user(polling_string, buffer, count))
- return_VALUE(-EFAULT);
+ return -EFAULT;
polling_string[count] = '\0';
result = acpi_thermal_set_polling(tz, seconds);
if (result)
- return_VALUE(result);
+ return result;
acpi_thermal_check(tz);
- return_VALUE(count);
+ return count;
}
static int acpi_thermal_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
- ACPI_FUNCTION_TRACE("acpi_thermal_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_thermal_dir);
if (!acpi_device_dir(device))
- return_VALUE(-ENODEV);
+ return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
entry = create_proc_entry(ACPI_THERMAL_FILE_STATE,
S_IRUGO, acpi_device_dir(device));
if (!entry)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Unable to create '%s' fs entry\n",
- ACPI_THERMAL_FILE_STATE));
+ return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_state_fops;
entry->data = acpi_driver_data(device);
entry = create_proc_entry(ACPI_THERMAL_FILE_TEMPERATURE,
S_IRUGO, acpi_device_dir(device));
if (!entry)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Unable to create '%s' fs entry\n",
- ACPI_THERMAL_FILE_TEMPERATURE));
+ return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_temp_fops;
entry->data = acpi_driver_data(device);
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Unable to create '%s' fs entry\n",
- ACPI_THERMAL_FILE_TRIP_POINTS));
+ return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_trip_fops;
entry->data = acpi_driver_data(device);
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Unable to create '%s' fs entry\n",
- ACPI_THERMAL_FILE_COOLING_MODE));
+ return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_cooling_fops;
entry->data = acpi_driver_data(device);
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Unable to create '%s' fs entry\n",
- ACPI_THERMAL_FILE_POLLING_FREQ));
+ return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_polling_fops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_remove_fs(struct acpi_device *device)
{
- ACPI_FUNCTION_TRACE("acpi_thermal_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_THERMAL_FILE_POLLING_FREQ,
acpi_device_dir(device) = NULL;
}
- return_VALUE(0);
+ return 0;
}
/* --------------------------------------------------------------------------
static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
{
- struct acpi_thermal *tz = (struct acpi_thermal *)data;
+ struct acpi_thermal *tz = data;
struct acpi_device *device = NULL;
- ACPI_FUNCTION_TRACE("acpi_thermal_notify");
if (!tz)
- return_VOID;
+ return;
- if (acpi_bus_get_device(tz->handle, &device))
- return_VOID;
+ device = tz->device;
switch (event) {
case ACPI_THERMAL_NOTIFY_TEMPERATURE:
break;
}
- return_VOID;
+ return;
}
static int acpi_thermal_get_info(struct acpi_thermal *tz)
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_thermal_get_info");
if (!tz)
- return_VALUE(-EINVAL);
+ return -EINVAL;
/* Get temperature [_TMP] (required) */
result = acpi_thermal_get_temperature(tz);
if (result)
- return_VALUE(result);
+ return result;
/* Get trip points [_CRT, _PSV, etc.] (required) */
result = acpi_thermal_get_trip_points(tz);
if (result)
- return_VALUE(result);
+ return 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)
if (!result)
tz->flags.devices = 1;
- return_VALUE(0);
+ return 0;
}
static int acpi_thermal_add(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_thermal *tz = NULL;
- ACPI_FUNCTION_TRACE("acpi_thermal_add");
if (!device)
- return_VALUE(-EINVAL);
+ return -EINVAL;
- tz = kmalloc(sizeof(struct acpi_thermal), GFP_KERNEL);
+ tz = kzalloc(sizeof(struct acpi_thermal), GFP_KERNEL);
if (!tz)
- return_VALUE(-ENOMEM);
- memset(tz, 0, sizeof(struct acpi_thermal));
+ return -ENOMEM;
- tz->handle = device->handle;
+ tz->device = device;
strcpy(tz->name, device->pnp.bus_id);
strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
result = acpi_thermal_add_fs(device);
if (result)
- return_VALUE(result);
+ goto end;
init_timer(&tz->timer);
acpi_thermal_check(tz);
- status = acpi_install_notify_handler(tz->handle,
+ status = acpi_install_notify_handler(device->handle,
ACPI_DEVICE_NOTIFY,
acpi_thermal_notify, tz);
if (ACPI_FAILURE(status)) {
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error installing notify handler\n"));
result = -ENODEV;
goto end;
}
kfree(tz);
}
- return_VALUE(result);
+ return result;
}
static int acpi_thermal_remove(struct acpi_device *device, int type)
acpi_status status = AE_OK;
struct acpi_thermal *tz = NULL;
- ACPI_FUNCTION_TRACE("acpi_thermal_remove");
if (!device || !acpi_driver_data(device))
- return_VALUE(-EINVAL);
+ return -EINVAL;
- tz = (struct acpi_thermal *)acpi_driver_data(device);
+ tz = acpi_driver_data(device);
/* avoid timer adding new defer task */
tz->zombie = 1;
/* deferred task may reinsert timer */
del_timer_sync(&(tz->timer));
- status = acpi_remove_notify_handler(tz->handle,
+ status = acpi_remove_notify_handler(device->handle,
ACPI_DEVICE_NOTIFY,
acpi_thermal_notify);
- if (ACPI_FAILURE(status))
- ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
- "Error removing notify handler\n"));
/* Terminate policy */
if (tz->trips.passive.flags.valid && tz->trips.passive.flags.enabled) {
acpi_thermal_remove_fs(device);
kfree(tz);
- return_VALUE(0);
+ return 0;
+}
+
+static int acpi_thermal_resume(struct acpi_device *device)
+{
+ struct acpi_thermal *tz = NULL;
+ int i, j, power_state, result;
+
+
+ if (!device || !acpi_driver_data(device))
+ return -EINVAL;
+
+ tz = acpi_driver_data(device);
+
+ for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
+ if (!(&tz->trips.active[i]))
+ break;
+ if (!tz->trips.active[i].flags.valid)
+ break;
+ tz->trips.active[i].flags.enabled = 1;
+ for (j = 0; j < tz->trips.active[i].devices.count; j++) {
+ result = acpi_bus_get_power(tz->trips.active[i].devices.
+ handles[j], &power_state);
+ if (result || (power_state != ACPI_STATE_D0)) {
+ tz->trips.active[i].flags.enabled = 0;
+ break;
+ }
+ }
+ tz->state.active |= tz->trips.active[i].flags.enabled;
+ }
+
+ acpi_thermal_check(tz);
+
+ return AE_OK;
}
static int __init acpi_thermal_init(void)
{
int result = 0;
- ACPI_FUNCTION_TRACE("acpi_thermal_init");
acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir);
if (!acpi_thermal_dir)
- return_VALUE(-ENODEV);
+ return -ENODEV;
acpi_thermal_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_thermal_driver);
if (result < 0) {
remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
- return_VALUE(-ENODEV);
+ return -ENODEV;
}
- return_VALUE(0);
+ return 0;
}
static void __exit acpi_thermal_exit(void)
{
- ACPI_FUNCTION_TRACE("acpi_thermal_exit");
acpi_bus_unregister_driver(&acpi_thermal_driver);
remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
- return_VOID;
+ return;
}
module_init(acpi_thermal_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff