From 06f37751af77192b424b2b0ff17dc08de65faba0 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 14 Dec 2010 10:06:46 -0800 Subject: [PATCH] drm/i915: Set the required VFMUNIT clock gating disable on Ironlake. It's required by the specs, but we don't know why. Let's not find out why. Signed-off-by: Eric Anholt Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/intel_display.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 878fc766a12c..8470a972f1bb 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2471,6 +2471,9 @@ # define MARIUNIT_CLOCK_GATE_DISABLE (1 << 18) # define SVSMUNIT_CLOCK_GATE_DISABLE (1 << 1) +#define PCH_3DCGDIS1 0x46024 +# define VFMUNIT_CLOCK_GATE_DISABLE (1 << 11) + #define FDI_PLL_FREQ_CTL 0x46030 #define FDI_PLL_FREQ_CHANGE_REQUEST (1<<24) #define FDI_PLL_FREQ_LOCK_LIMIT_MASK 0xfff00 diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index d9b7092439ef..97e374ec7f72 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5825,6 +5825,8 @@ void intel_init_clock_gating(struct drm_device *dev) I915_WRITE(PCH_3DCGDIS0, MARIUNIT_CLOCK_GATE_DISABLE | SVSMUNIT_CLOCK_GATE_DISABLE); + I915_WRITE(PCH_3DCGDIS1, + VFMUNIT_CLOCK_GATE_DISABLE); } I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);