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-rw-r--r--drivers/char/i8k.c76
1 files changed, 62 insertions, 14 deletions
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index 09ebe06764e3..24cc4ed9a780 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -43,6 +43,7 @@
#define I8K_SMM_SET_FAN 0x01a3
#define I8K_SMM_GET_FAN 0x00a3
#define I8K_SMM_GET_SPEED 0x02a3
+#define I8K_SMM_GET_FAN_TYPE 0x03a3
#define I8K_SMM_GET_NOM_SPEED 0x04a3
#define I8K_SMM_GET_TEMP 0x10a3
#define I8K_SMM_GET_TEMP_TYPE 0x11a3
@@ -279,6 +280,17 @@ static int i8k_get_fan_speed(int fan)
}
/*
+ * Read the fan type.
+ */
+static int i8k_get_fan_type(int fan)
+{
+ struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, };
+
+ regs.ebx = fan & 0xff;
+ return i8k_smm(&regs) ? : regs.eax & 0xff;
+}
+
+/*
* Read the fan nominal rpm for specific fan speed.
*/
static int i8k_get_fan_nominal_speed(int fan, int speed)
@@ -553,6 +565,37 @@ static ssize_t i8k_hwmon_show_temp(struct device *dev,
return sprintf(buf, "%d\n", temp * 1000);
}
+static ssize_t i8k_hwmon_show_fan_label(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ static const char * const labels[] = {
+ "Processor Fan",
+ "Motherboard Fan",
+ "Video Fan",
+ "Power Supply Fan",
+ "Chipset Fan",
+ "Other Fan",
+ };
+ int index = to_sensor_dev_attr(devattr)->index;
+ bool dock = false;
+ int type;
+
+ type = i8k_get_fan_type(index);
+ if (type < 0)
+ return type;
+
+ if (type & 0x10) {
+ dock = true;
+ type &= 0x0F;
+ }
+
+ if (type >= ARRAY_SIZE(labels))
+ type = (ARRAY_SIZE(labels) - 1);
+
+ return sprintf(buf, "%s%s\n", (dock ? "Docking " : ""), labels[type]);
+}
+
static ssize_t i8k_hwmon_show_fan(struct device *dev,
struct device_attribute *devattr,
char *buf)
@@ -611,14 +654,17 @@ static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
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(fan1_input, S_IRUGO, i8k_hwmon_show_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan1_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL,
+ 0);
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
- i8k_hwmon_set_pwm, I8K_FAN_LEFT);
+ i8k_hwmon_set_pwm, 0);
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, i8k_hwmon_show_fan, NULL,
- I8K_FAN_RIGHT);
+ 1);
+static SENSOR_DEVICE_ATTR(fan2_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL,
+ 1);
static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
- i8k_hwmon_set_pwm, I8K_FAN_RIGHT);
+ i8k_hwmon_set_pwm, 1);
static struct attribute *i8k_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr, /* 0 */
@@ -630,9 +676,11 @@ static struct attribute *i8k_attrs[] = {
&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 */
+ &sensor_dev_attr_fan1_label.dev_attr.attr, /* 9 */
+ &sensor_dev_attr_pwm1.dev_attr.attr, /* 10 */
+ &sensor_dev_attr_fan2_input.dev_attr.attr, /* 11 */
+ &sensor_dev_attr_fan2_label.dev_attr.attr, /* 12 */
+ &sensor_dev_attr_pwm2.dev_attr.attr, /* 13 */
NULL
};
@@ -651,10 +699,10 @@ static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr,
if (index >= 6 && index <= 7 &&
!(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP4))
return 0;
- if (index >= 8 && index <= 9 &&
+ if (index >= 8 && index <= 10 &&
!(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN1))
return 0;
- if (index >= 10 && index <= 11 &&
+ if (index >= 11 && index <= 13 &&
!(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN2))
return 0;
@@ -688,13 +736,13 @@ static int __init i8k_init_hwmon(void)
if (err >= 0)
i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP4;
- /* Left fan attributes, if left fan is present */
- err = i8k_get_fan_status(I8K_FAN_LEFT);
+ /* First fan attributes, if fan type is OK */
+ err = i8k_get_fan_type(0);
if (err >= 0)
i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN1;
- /* Right fan attributes, if right fan is present */
- err = i8k_get_fan_status(I8K_FAN_RIGHT);
+ /* Second fan attributes, if fan type is OK */
+ err = i8k_get_fan_type(1);
if (err >= 0)
i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN2;