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thinkpad-acpi: log temperatures on termal alarm (v2)

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Log temperatures on any of the EC thermal alarms.  It could be
useful to help tracking down what is happening...

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Henrique de Moraes Holschuh 2009-12-09 01:36:28 +00:00 committed by Len Brown
parent b09c72259e
commit 9ebd9e8336
1 changed files with 58 additions and 25 deletions
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83
drivers/platform/x86/thinkpad_acpi.c
View file

@ -3546,49 +3546,57 @@ static bool hotkey_notify_usrevent(const u32 hkey,
}
}
static void thermal_dump_all_sensors(void);
static bool hotkey_notify_thermal(const u32 hkey,
bool *send_acpi_ev,
bool *ignore_acpi_ev)
{
bool known = true;
/* 0x6000-0x6FFF: thermal alarms */
*send_acpi_ev = true;
*ignore_acpi_ev = false;
switch (hkey) {
case TP_HKEY_EV_ALARM_BAT_HOT:
printk(TPACPI_CRIT
"THERMAL ALARM: battery is too hot!\n");
/* recommended action: warn user through gui */
return true;
case TP_HKEY_EV_ALARM_BAT_XHOT:
printk(TPACPI_ALERT
"THERMAL EMERGENCY: battery is extremely hot!\n");
/* recommended action: immediate sleep/hibernate */
return true;
case TP_HKEY_EV_ALARM_SENSOR_HOT:
printk(TPACPI_CRIT
"THERMAL ALARM: "
"a sensor reports something is too hot!\n");
/* recommended action: warn user through gui, that */
/* some internal component is too hot */
return true;
case TP_HKEY_EV_ALARM_SENSOR_XHOT:
printk(TPACPI_ALERT
"THERMAL EMERGENCY: "
"a sensor reports something is extremely hot!\n");
/* recommended action: immediate sleep/hibernate */
return true;
case TP_HKEY_EV_THM_TABLE_CHANGED:
printk(TPACPI_INFO
"EC reports that Thermal Table has changed\n");
/* recommended action: do nothing, we don't have
* Lenovo ATM information */
return true;
case TP_HKEY_EV_ALARM_BAT_HOT:
printk(TPACPI_CRIT
"THERMAL ALARM: battery is too hot!\n");
/* recommended action: warn user through gui */
break;
case TP_HKEY_EV_ALARM_BAT_XHOT:
printk(TPACPI_ALERT
"THERMAL EMERGENCY: battery is extremely hot!\n");
/* recommended action: immediate sleep/hibernate */
break;
case TP_HKEY_EV_ALARM_SENSOR_HOT:
printk(TPACPI_CRIT
"THERMAL ALARM: "
"a sensor reports something is too hot!\n");
/* recommended action: warn user through gui, that */
/* some internal component is too hot */
break;
case TP_HKEY_EV_ALARM_SENSOR_XHOT:
printk(TPACPI_ALERT
"THERMAL EMERGENCY: "
"a sensor reports something is extremely hot!\n");
/* recommended action: immediate sleep/hibernate */
break;
default:
printk(TPACPI_ALERT
"THERMAL ALERT: unknown thermal alarm received\n");
return false;
known = false;
}
thermal_dump_all_sensors();
return known;
}
static void hotkey_notify(struct ibm_struct *ibm, u32 event)
@ -5462,8 +5470,11 @@ enum { /* TPACPI_THERMAL_TPEC_* */
TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */
TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */
TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */
TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */
};
#define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */
struct ibm_thermal_sensors_struct {
s32 temp[TPACPI_MAX_THERMAL_SENSORS];
@ -5553,6 +5564,28 @@ static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
return n;
}
static void thermal_dump_all_sensors(void)
{
int n, i;
struct ibm_thermal_sensors_struct t;
n = thermal_get_sensors(&t);
if (n <= 0)
return;
printk(TPACPI_NOTICE
"temperatures (Celsius):");
for (i = 0; i < n; i++) {
if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA)
printk(KERN_CONT " %d", (int)(t.temp[i] / 1000));
else
printk(KERN_CONT " N/A");
}
printk(KERN_CONT "\n");
}
/* sysfs temp##_input -------------------------------------------------- */
static ssize_t thermal_temp_input_show(struct device *dev,
@ -5568,7 +5601,7 @@ static ssize_t thermal_temp_input_show(struct device *dev,
res = thermal_get_sensor(idx, &value);
if (res)
return res;
if (value == TP_EC_THERMAL_TMP_NA * 1000)
if (value == TPACPI_THERMAL_SENSOR_NA)
return -ENXIO;
return snprintf(buf, PAGE_SIZE, "%d\n", value);