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Commit 5114b474 authored by Pali Rohár's avatar Pali Rohár Committed by Greg Kroah-Hartman
Browse files

i8k: Add support for temperature sensor labels 



This patch adds labels for temperature sensors if SMM function with EAX register
0x11a3 reports it. This information was taken from DOS binary NBSVC.MDM.

Signed-off-by: default avatarPali Rohár <pali.rohar@gmail.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Tested-by: default avatarGuenter Roeck <linux@roeck-us.net>
Tested-by: default avatarPali Rohár <pali.rohar@gmail.com>
Tested-by: default avatarSteven Honeyman <stevenhoneyman@gmail.com>
Tested-by: default avatarGabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d9b16529

drivers/char/i8k.c

+61 −13
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ 
#define I8K_SMM_GET_FAN		0x00a3

#define I8K_SMM_GET_SPEED	0x02a3

#define I8K_SMM_GET_TEMP	0x10a3

#define I8K_SMM_GET_TEMP_TYPE	0x11a3

#define I8K_SMM_GET_DELL_SIG1	0xfea3

#define I8K_SMM_GET_DELL_SIG2	0xffa3
@@ -288,6 +289,14 @@ static int i8k_set_fan(int fan, int speed) 
	return i8k_smm(&regs) ? : i8k_get_fan_status(fan);

}



static int i8k_get_temp_type(int sensor)

{

	struct smm_regs regs = { .eax = I8K_SMM_GET_TEMP_TYPE, };



	regs.ebx = sensor & 0xff;

	return i8k_smm(&regs) ? : regs.eax & 0xff;

}



/*

 * Read the cpu temperature.

 */
@@ -493,6 +502,29 @@ static int i8k_open_fs(struct inode *inode, struct file *file) 
 * Hwmon interface

 */



static ssize_t i8k_hwmon_show_temp_label(struct device *dev,

					 struct device_attribute *devattr,

					 char *buf)

{

	static const char * const labels[] = {

		"CPU",

		"GPU",

		"SODIMM",

		"Other",

		"Ambient",

		"Other",

	};

	int index = to_sensor_dev_attr(devattr)->index;

	int type;



	type = i8k_get_temp_type(index);

	if (type < 0)

		return type;

	if (type >= ARRAY_SIZE(labels))

		type = ARRAY_SIZE(labels) - 1;

	return sprintf(buf, "%s\n", labels[type]);

}



static ssize_t i8k_hwmon_show_temp(struct device *dev,

				   struct device_attribute *devattr,

				   char *buf)
@@ -555,9 +587,17 @@ static ssize_t i8k_hwmon_set_pwm(struct device *dev, 
}



static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 0);

static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,

			  0);

static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 1);

static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,

			  1);

static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 2);

static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,

			  2);

static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 3);

static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,

			  3);

static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, i8k_hwmon_show_fan, NULL,

			  I8K_FAN_LEFT);

static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
@@ -569,31 +609,39 @@ static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm, 


static struct attribute *i8k_attrs[] = {

	&sensor_dev_attr_temp1_input.dev_attr.attr,	/* 0 */

	&sensor_dev_attr_temp2_input.dev_attr.attr,	/* 1 */

	&sensor_dev_attr_temp3_input.dev_attr.attr,	/* 2 */

	&sensor_dev_attr_temp4_input.dev_attr.attr,	/* 3 */

	&sensor_dev_attr_fan1_input.dev_attr.attr,	/* 4 */

	&sensor_dev_attr_pwm1.dev_attr.attr,		/* 5 */

	&sensor_dev_attr_fan2_input.dev_attr.attr,	/* 6 */

	&sensor_dev_attr_pwm2.dev_attr.attr,		/* 7 */

	&sensor_dev_attr_temp1_label.dev_attr.attr,	/* 1 */

	&sensor_dev_attr_temp2_input.dev_attr.attr,	/* 2 */

	&sensor_dev_attr_temp2_label.dev_attr.attr,	/* 3 */

	&sensor_dev_attr_temp3_input.dev_attr.attr,	/* 4 */

	&sensor_dev_attr_temp3_label.dev_attr.attr,	/* 5 */

	&sensor_dev_attr_temp4_input.dev_attr.attr,	/* 6 */

	&sensor_dev_attr_temp4_label.dev_attr.attr,	/* 7 */

	&sensor_dev_attr_fan1_input.dev_attr.attr,	/* 8 */

	&sensor_dev_attr_pwm1.dev_attr.attr,		/* 9 */

	&sensor_dev_attr_fan2_input.dev_attr.attr,	/* 10 */

	&sensor_dev_attr_pwm2.dev_attr.attr,		/* 11 */

	NULL

};



static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr,

			      int index)

{

	if (index == 0 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP1))

	if (index >= 0 && index <= 1 &&

	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP1))

		return 0;

	if (index == 1 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP2))

	if (index >= 2 && index <= 3 &&

	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP2))

		return 0;

	if (index == 2 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP3))

	if (index >= 4 && index <= 5 &&

	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP3))

		return 0;

	if (index == 3 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP4))

	if (index >= 6 && index <= 7 &&

	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP4))

		return 0;

	if (index >= 4 && index <= 5 &&

	if (index >= 8 && index <= 9 &&

	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN1))

		return 0;

	if (index >= 6 && index <= 7 &&

	if (index >= 10 && index <= 11 &&

	    !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN2))

		return 0;