From cca84a1fff513d8f9a862f5ef5b062ad0f60a9f4 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Tue, 28 Jan 2014 20:25:38 -0800 Subject: [PATCH] drm/i915: Clarify RC6 enabling At one time, we though all future platforms would have the deeper RC6 states. As it turned out, they killed it after Ivybridge, and began using other means to achieve the power savings (the stuff we need to get to PC7+). The enable function was left in a weird state of odd corner cases as a result. Since the future is now, and we also have some insight into what's currently the future, we have an opportunity to simplify, and future proof the function. NOTE: VLV will be addressed in a subsequent patch. This patch was trying not to change functionality. NOTE2: All callers sanitize the return value anyway, so this patch is simply to have the code make a bit more sense. Signed-off-by: Ben Widawsky Reviewed-by: Deepak S Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_pm.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index af45c2768da3..01b399fafe74 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3222,14 +3222,10 @@ int intel_enable_rc6(const struct drm_device *dev) if (INTEL_INFO(dev)->gen == 5) return 0; - if (IS_HASWELL(dev)) - return INTEL_RC6_ENABLE; - - /* snb/ivb have more than one rc6 state. */ - if (INTEL_INFO(dev)->gen == 6) + if (IS_IVYBRIDGE(dev) || IS_VALLEYVIEW(dev)) + return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); + else return INTEL_RC6_ENABLE; - - return (INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE); } static void gen6_enable_rps_interrupts(struct drm_device *dev) -- 2.20.1