From: Jani Nikula Date: Mon, 1 Oct 2012 11:25:30 +0000 (+0300) Subject: drm/i915: add debug logging to ASLE backlight set requests X-Git-Tag: v3.8-rc1~42^2~193^2~213 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=749052fba650a644b29ed2ae35cd985f736401b3;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git drm/i915: add debug logging to ASLE backlight set requests Make it easier to track backlight set requests coming through ASLE instead of the driver's own backlight sysfs interface. We've had enough of backlight issues to warrant some extra debug logs in the area. Signed-off-by: Jani Nikula Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index e27c170..0f2db16 100644 --- a/drivers/gpu/drm/i915/intel_opregion.c +++ b/drivers/gpu/drm/i915/intel_opregion.c @@ -154,6 +154,8 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp) struct opregion_asle __iomem *asle = dev_priv->opregion.asle; u32 max; + DRM_DEBUG_DRIVER("bclp = 0x%08x\n", bclp); + if (!(bclp & ASLE_BCLP_VALID)) return ASLE_BACKLIGHT_FAILED;