We already correctly ignore bit0 on gen < 4, now we also now why ;-) I've decided that losing that single bit of precision isn't worth the trouble to sprinkle IS_PINEVIEW checks all over the backlight control code - that code is way too fragile imo. Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/i915/i915_reg.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 7dcc04f..20244b9 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1828,6 +1828,8 @@ */ #define BACKLIGHT_DUTY_CYCLE_SHIFT (0) #define BACKLIGHT_DUTY_CYCLE_MASK (0xffff) +#define BACKLIGHT_DUTY_CYCLE_MASK_PNV (0xfffe) +#define BLM_POLARITY_PNV (1 << 0) /* pnv only */ #define BLC_HIST_CTL 0x61260 -- 1.7.7.6
