diff options
| author | Martin Peres <martin.peres@ensi-bourges.fr> | 2011-08-15 05:10:30 +0400 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2011-12-21 13:01:11 +0400 |
| commit | 11b7d895216f7f954c6cfa0c23b76dccb7a890c1 (patch) | |
| tree | efc9af29ec90e3159bef8f99d88d5bc31c51903c /drivers/gpu/drm/nouveau/nouveau_bios.h | |
| parent | cb9fa62671ace5ac40b9924e9014cebf04b78228 (diff) | |
| download | linux-11b7d895216f7f954c6cfa0c23b76dccb7a890c1.tar.xz | |
drm/nouveau/pm: manual pwm fanspeed management for nv40+ boards
Exposes the following sysfs entries:
- fan0_input: read the rotational speed of the fan (poll a bit during 250ms)
- pwm0: set the pwm duty cycle
- pwm0_min/max: set the minimum/maximum pwm value
v2 (Ben Skeggs):
- nv50 pwm controller code removed in favour of other more complete code
- FAN_RPM -> FAN_SENSE
- merged FAN_SENSE readout into common code, not at all nv50-specific
- protected fanspeed changes with perflvl_wr
- formatting tidying
- added some comments where things are shaky
v3 (Martin Peres)
- ensure duty min/max from thermal table are sane
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Martin Peres <martin.peres@ensi-bourges.fr>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_bios.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_bios.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.h b/drivers/gpu/drm/nouveau/nouveau_bios.h index 8adb69e4a6b1..3f36c7074d4f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.h +++ b/drivers/gpu/drm/nouveau/nouveau_bios.h @@ -58,6 +58,8 @@ struct dcb_i2c_entry { enum dcb_gpio_tag { DCB_GPIO_TVDAC0 = 0xc, DCB_GPIO_TVDAC1 = 0x2d, + DCB_GPIO_PWM_FAN = 0x9, + DCB_GPIO_FAN_SENSE = 0x3d, }; struct dcb_gpio_entry { |