diff options
| author | Pali Rohár <pali.rohar@gmail.com> | 2016-06-18 01:54:48 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2016-06-28 04:58:03 +0300 |
| commit | 747bc8b063ae6b66447918280922253721cb1d9b (patch) | |
| tree | 072e24eb7dae1f66fb4debc22433b0bdfe7dcb8a /drivers/hwmon | |
| parent | 68f86c75ca1eaf790907eb43c68f9f2996474116 (diff) | |
| download | linux-747bc8b063ae6b66447918280922253721cb1d9b.tar.xz | |
hwmon: (dell-smm) Detect fan with index=2
Some Dell machines (e.g. Dell Precision M3800) have two fans, first with
index=0 and second with index=2. So export also attributes for third fan
device with index=2.
Reported-by: Tolga Cakir <cevelnet@gmail.com>
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Tolga Cakir <cevelnet@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/dell-smm-hwmon.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index 2ac87d553e22..571d4984d39c 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -81,6 +81,7 @@ static bool disallow_fan_type_call; #define I8K_HWMON_HAVE_TEMP4 (1 << 3) #define I8K_HWMON_HAVE_FAN1 (1 << 4) #define I8K_HWMON_HAVE_FAN2 (1 << 5) +#define I8K_HWMON_HAVE_FAN3 (1 << 6) MODULE_AUTHOR("Massimo Dal Zotto (dz@debian.org)"); MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>"); @@ -252,7 +253,7 @@ static int _i8k_get_fan_type(int fan) static int i8k_get_fan_type(int fan) { /* I8K_SMM_GET_FAN_TYPE SMM call is expensive, so cache values */ - static int types[2] = { INT_MIN, INT_MIN }; + static int types[3] = { INT_MIN, INT_MIN, INT_MIN }; if (types[fan] == INT_MIN) types[fan] = _i8k_get_fan_type(fan); @@ -719,6 +720,12 @@ 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, 1); +static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, i8k_hwmon_show_fan, NULL, + 2); +static SENSOR_DEVICE_ATTR(fan3_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL, + 2); +static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm, + i8k_hwmon_set_pwm, 2); static struct attribute *i8k_attrs[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, /* 0 */ @@ -735,6 +742,9 @@ static struct attribute *i8k_attrs[] = { &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 */ + &sensor_dev_attr_fan3_input.dev_attr.attr, /* 14 */ + &sensor_dev_attr_fan3_label.dev_attr.attr, /* 15 */ + &sensor_dev_attr_pwm3.dev_attr.attr, /* 16 */ NULL }; @@ -742,7 +752,7 @@ static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, int index) { if (disallow_fan_type_call && - (index == 9 || index == 12)) + (index == 9 || index == 12 || index == 15)) return 0; if (index >= 0 && index <= 1 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP1)) @@ -762,6 +772,9 @@ static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, if (index >= 11 && index <= 13 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN2)) return 0; + if (index >= 14 && index <= 16 && + !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN3)) + return 0; return attr->mode; } @@ -807,6 +820,13 @@ static int __init i8k_init_hwmon(void) if (err >= 0) i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN2; + /* Third fan attributes, if fan status or type is OK */ + err = i8k_get_fan_status(2); + if (err < 0) + err = i8k_get_fan_type(2); + if (err >= 0) + i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN3; + i8k_hwmon_dev = hwmon_device_register_with_groups(NULL, "dell_smm", NULL, i8k_groups); if (IS_ERR(i8k_hwmon_dev)) { |