diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-01-14 20:48:02 +0000 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-01-15 14:08:01 -0800 |
| commit | 33814341f22f13cec17e8d7fbf6f7e8000e3efa4 (patch) | |
| tree | 7f43f096589e6900fb11db0033d3e68086d7c475 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 21bd770b9c90ee6a53a9dbb6293513a8c7654cfe (diff) | |
drm/i915: disable LVDS downclock by default
Many platform support this feature, and it can provide significant
power savings when the reduced refresh rate is low. However, on some
platforms a secondary (reduced) timing is provided but not actually
supported by the hardware. This results in undesirable flicker at
runtime.
So disable the feature by default, but allow users to opt-in to the
reduced clock behavior with a new module parameter, lvds_downclock,
that can be set to 1 to enable the feature.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 445c49c6c39..5f781a74bf5 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -722,6 +722,7 @@ extern struct drm_ioctl_desc i915_ioctls[]; extern int i915_max_ioctl; extern unsigned int i915_fbpercrtc; extern unsigned int i915_powersave; +extern unsigned int i915_lvds_downclock; extern void i915_save_display(struct drm_device *dev); extern void i915_restore_display(struct drm_device *dev); |