diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_opregion.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_opregion.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index 2acf5cae20e4..b82050c96f3e 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -258,7 +258,9 @@ static int swsci(struct drm_device *dev, u32 function, u32 parm, u32 *parm_out) /* Driver sleep timeout in ms. */ dslp = ioread32(&swsci->dslp); if (!dslp) { - dslp = 2; + /* The spec says 2ms should be the default, but it's too small + * for some machines. */ + dslp = 50; } else if (dslp > 500) { /* Hey bios, trust must be earned. */ WARN_ONCE(1, "excessive driver sleep timeout (DSPL) %u\n", dslp); @@ -405,6 +407,7 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) if (bclp > 255) return ASLC_BACKLIGHT_FAILED; + DRM_DEBUG_KMS("updating opregion backlight %d/255\n", bclp); intel_panel_set_backlight(dev, bclp, 255); iowrite32(DIV_ROUND_UP(bclp * 100, 255) | ASLE_CBLV_VALID, &asle->cblv); |