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 <ben@xxxxxxxxxxxx> --- 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 53d64bb..bcbdac2 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3161,14 +3161,10 @@ 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) -- 1.8.5.3 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
