From 749052fba650a644b29ed2ae35cd985f736401b3 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Mon, 1 Oct 2012 14:25:30 +0300 Subject: [PATCH] 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 --- drivers/gpu/drm/i915/intel_opregion.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c index e27c17012628..0f2db1648f04 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; -- 2.20.1