static int tz_osl_proc_write_info (
struct file *file,
const char *buffer,
unsigned long count,
void *data)
{
TZ_CONTEXT *tz = NULL;
u32 state = 0;
u32 size = 0;
if (!buffer || (count==0) || !data) {
goto end;
}
tz = (TZ_CONTEXT*)data;
size = strlen(buffer);
if (size < 4)
goto end;
/* Cooling preference: "scp=0" (active) or "scp=1" (passive) */
if (0 == strncmp(buffer, "scp=", 4)) {
tz_set_cooling_preference(tz, (buffer[4] - '0'));
}
/* Polling frequency: "tzp=X" (poll every X [0-9] seconds) */
else if (0 == strncmp(buffer, "tzp=", 4)) {
tz->policy.polling_freq = (buffer[4] - '0') * 10;
tz_policy_check(tz);
}
end:
return count;
}
acpi_status
tz_policy_add_device (
TZ_CONTEXT *tz)
{
acpi_status status = AE_OK;
TZ_THRESHOLDS *thresholds = NULL;
u32 i,j = 0;
FUNCTION_TRACE("tz_policy_add_device");
if (!tz) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Adding policy for thermal zone [%02x].\n", tz->device_handle));
/*
* Get Thresholds:
* ---------------
*/
status = tz_get_thresholds(tz);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/*
* Initialize Policies:
* --------------------
*/
if (tz->policy.thresholds.passive.is_valid) {
for (i=0; i<tz->policy.thresholds.passive.devices.count; i++)
set_performance_limit(tz->policy.thresholds.passive.devices.handles[i], PR_PERF_MAX);
tz_policy_passive(tz);
}
if (tz->policy.thresholds.active[0].is_valid)
tz_policy_active(tz);
/*
* Initialize Policy Timer:
* ------------------------
*/
init_timer(&(tz->policy.timer));
/*
* Start Policy:
* -------------
* Run an initial check using this zone's policy.
*/
tz_policy_check(tz);
return_ACPI_STATUS(AE_OK);
}
acpi_status
tz_notify (
BM_NOTIFY notify_type,
BM_HANDLE device_handle,
void **context)
{
acpi_status status = AE_OK;
TZ_CONTEXT *tz = NULL;
FUNCTION_TRACE("tz_notify");
if (!context) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
tz = (TZ_CONTEXT*)*context;
switch (notify_type) {
case BM_NOTIFY_DEVICE_ADDED:
status = tz_add_device(device_handle, context);
break;
case BM_NOTIFY_DEVICE_REMOVED:
status = tz_remove_device(context);
break;
case TZ_NOTIFY_TEMPERATURE_CHANGE:
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Temperature (_TMP) change event detected.\n"));
tz_policy_check(*context);
status = tz_get_temperature(tz);
if (ACPI_SUCCESS(status)) {
status = tz_osl_generate_event(notify_type, tz);
}
break;
case TZ_NOTIFY_THRESHOLD_CHANGE:
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Threshold (_SCP) change event detected.\n"));
status = tz_policy_remove_device(tz);
if (ACPI_SUCCESS(status)) {
status = tz_policy_add_device(tz);
}
status = tz_osl_generate_event(notify_type, tz);
break;
case TZ_NOTIFY_DEVICE_LISTS_CHANGE:
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Device lists (_ALx, _PSL, _TZD) change event detected.\n"));
status = tz_policy_remove_device(tz);
if (ACPI_SUCCESS(status)) {
status = tz_policy_add_device(tz);
}
status = tz_osl_generate_event(notify_type, tz);
break;
default:
status = AE_SUPPORT;
break;
}
return_ACPI_STATUS(status);
}
