Lines Matching full:fan
18 automatically adjust fan speed (please notice that it currently uses
35 fan[1-3]_input RO Fan speed in RPM.
36 fan[1-3]_label RO Fan label.
37 fan[1-3]_min RO Minimal Fan speed in RPM
38 fan[1-3]_max RO Maximal Fan speed in RPM
39 fan[1-3]_target RO Expected Fan speed in RPM
40 pwm[1-3] RW Control the fan PWM duty-cycle.
41 pwm1_enable WO Enable or disable automatic BIOS fan
50 fan number X.
52 Disabling automatic BIOS fan control
55 On some laptops the BIOS automatically sets fan speed every few
56 seconds. Therefore the fan speed set by mean of this driver is quickly
59 There is experimental support for disabling automatic BIOS fan
63 more than one fan, all of them are set to either enabled or disabled
64 automatic fan control at the same time and, notwithstanding the name,
68 enabling and disabling automatic BIOS fan control are not whitelisted
77 is present and works (i.e., you can manually control the fan speed),
96 ``type`` set to ``dell-smm-fan[1-3]``. This allows for easy fan control
111 Allow fan control only to processes with the
115 to read temperature and fan status but not to
116 control the fan. If your notebook is shared with
126 Factor to multiply fan speed with. (default:
130 Maximum configurable fan speed. (default:
174 obtain the same information and to control the fan status. The ioctl
264 ``0x00a3`` Get fan state Returns current fan state after SMM:
267 fan state (0 - 2 or 3)
269 ``0x01a3`` Set fan state Sets the fan speed:
271 - 1st byte in ``ebx`` holds the fan number
273 fan state (0 - 2 or 3)
275 ``0x02a3`` Get fan speed Returns the current fan speed in RPM:
277 - 1st byte in ``ebx`` holds the fan number
279 fan speed in RPM (after SMM)
281 ``0x03a3`` Get fan type Returns the fan type:
283 - 1st byte in ``ebx`` holds the fan number
285 fan type (after SMM):
287 - 5th bit indicates docking fan
288 - 1 indicates Processor fan
289 - 2 indicates Motherboard fan
290 - 3 indicates Video fan
291 - 4 indicates Power supply fan
292 - 5 indicates Chipset fan
293 - 6 indicates other fan type
295 ``0x04a3`` Get nominal fan speed Returns the nominal RPM in each fan state:
297 - 1st byte in ``ebx`` holds the fan number
298 - 2nd byte in ``ebx`` holds the fan state
301 fan speed in RPM (after SMM)
303 ``0x05a3`` Get fan speed tolerance Returns the speed tolerance for each fan state:
305 - 1st byte in ``ebx`` holds the fan number
306 - 2nd byte in ``ebx`` holds the fan state
342 disabling (``0x30a3`` or ``0x34a3``) automatic fan speed control.
348 fan control should be enabled for a specific fan.
349 However there are also some machines who do support a 4th regular fan state too,
361 Reading of fan states return spurious errors. Precision 490
365 Reading of fan types causes erratic fan behaviour. Studio XPS 8000
373 Fan-related SMM calls take too long (about 500ms). Inspiron 7720
390 Also the fan state needs to be restored after suspend, as well as