From 11b7d895216f7f954c6cfa0c23b76dccb7a890c1 Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Mon, 15 Aug 2011 11:10:30 +1000 Subject: 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 Signed-off-by: Martin Peres --- drivers/gpu/drm/nouveau/nouveau_bios.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/drm/nouveau/nouveau_bios.h') diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.h b/drivers/gpu/drm/nouveau/nouveau_bios.h index 8adb69e4a6b..3f36c7074d4 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 { -- cgit v1.2.3-70-g09d2