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path: root/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c
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2015-01-22drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)Ben Skeggs1-264/+0
The symlinks were annoying some people, and they're not used anywhere else in the kernel tree. The include directory structure has been changed so that symlinks aren't needed anymore. NVKM has been moved from core/ to nvkm/ to make it more obvious as to what the directory is for, and as some minor prep for when NVKM gets split out into its own module (virt) at a later date. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2014-07-15drm/nouveau/therm: fix a potential deadlock in the therm monitoring codeMartin Peres1-3/+3
Signed-off-by: Martin Peres <martin.peres@free.fr> Tested-by: Stefan Ringel <mail@stefanringel.de> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-11-08drm/nouveau/therm: kill some over-zealous debuggingBen Skeggs1-2/+0
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/therm: survive to suspend/resume cyclesMartin Peres1-0/+21
Therm uses 3 ptimer alarms. Two to drive the fan and one for polling the temperature. When suspending/resuming, alarms will never be fired. As we are checking if there isn't an alarm pending before rescheduling another one, we end up never checking temperature or updating the fan speed. This commit also adds debug messages to be able to spot more easily if this case happens again in the future. Sorry for the spam if you activate the debug level though. Tested-by: Dash Four <mr.dash.four@googlemail.com> v2: - fix temperature polling too Signed-off-by: Martin Peres <martin.peres@labri.fr> Tested-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-04-26drm/nouveau/therm: send some messages to debug levelBen Skeggs1-7/+7
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18drm/nouveau/therm: display the availability of the internal sensorMartin Peres1-0/+11
Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18drm/nouveau/therm: disable temperature management if the sensor isn't readableMartin Peres1-1/+1
Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18drm/nv40/therm: disable temperature reading if the bios misses some parametersMartin Peres1-9/+0
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18drm/nouveau/therm: remove some confusion introduced by therm_modeMartin Peres1-1/+1
The kernel message "[ PTHERM][0000:01:00.0] Thermal management: disabled" is misleading as it actually means "fan management: disabled". This patch fixes both the source and the message to improve readability. Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-03-18drm/nouveau/therm: do not make assumptions on temperatureMartin Peres1-3/+3
In nouveau_therm_sensor_event, temperature is stored as an uint8_t even though the original interface returns an int. This change should make it more obvious when the sensor is either very-ill-calibrated or when we selected the wrong sensor style on the nv40 family. Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-02-20drm/nouveau/therm: use workqueue to shutdown the machineMarcin Slusarz1-2/+16
orderly_poweroff cannot be called from atomic context. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Acked-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-02-20drm/nouveau/therm: turn on fan only when threshold hit in positive directionMarcin Slusarz1-4/+7
+ the same for shutdown threshold - seems impossible, but shutdown can fail. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Acked-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-02-20drm/nouveau/therm: force a minimum hysteresis on temperature alarm thresholdsMartin Peres1-0/+7
This should avoid the situation where a user gets its kernel logs flooded when temperature oscillates around a threshold with 0°C hysteresis. This patch is just meant to fix broken vbios (as reported on a nv4e on sysfs hwmon interface. Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-02-20drm/nouveau/therm: better transitions and debug loggingBen Skeggs1-1/+1
Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Martin Peres <martin.peres@labri.fr>
2013-02-20drm/nouveau/therm: implement support for temperature alarmsMartin Peres1-0/+138
For now, we only boost the fan speed to the maximum and auto-mode when hitting the FAN_BOOST threshold and halt the computer when it reaches the shutdown temperature. The downclock and critical thresholds do nothing. On nv43:50 and nva3+, temperature is polled because of the limited hardware. I'll improve the nva3+ situation by implementing alarm management in PDAEMON whenever I can but polling once every second shouldn't be such a problem. v2 (Ben Skeggs): - rebased v3: fixed false-detections and threshold reprogrammation handling on nv50:nvc0 Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Martin Peres <martin.peres@labri.fr>
2012-10-03drm/nouveau/therm: move thermal-related functions to the therm subdevMartin Peres1-0/+81
It looks scary because of the size, but I tried to keep the differences minimal. Further patches will fix the actual "driver" code and add new features. v2: change filenames, split to submodules v3: add a missing include v4: Ben Skeggs <bskeggs@redhat.com> - fixed set_defaults() to allow min_duty < 30 (thermal table will override this if it's actually necessary) - fixed set_defaults() to not provide pwm_freq so nv4x (which only has pwm_div) can actually work. the boards using pwm_freq will have a thermal table entry to provide us the value. - removed unused files Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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