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Commit 9ebd9e83 authored by Henrique de Moraes Holschuh's avatar Henrique de Moraes Holschuh Committed by Len Brown
Browse files

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



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

Signed-off-by: default avatarHenrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent b09c7225

drivers/platform/x86/thinkpad_acpi.c

+45 −12
Original line number Diff line number Diff line
@@ -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_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 */

		return true;

		break;

	case TP_HKEY_EV_ALARM_BAT_XHOT:

		printk(TPACPI_ALERT

			"THERMAL EMERGENCY: battery is extremely hot!\n");

		/* recommended action: immediate sleep/hibernate */

		return true;

		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 */

		return true;

		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 */

		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;

		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);