From 0ba0e9e1f173a59ba402a253d356612c821b7a14 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Tue, 7 Apr 2009 11:02:28 +0800 Subject: drm/i915: workaround IGD i2c bus issue in kernel side (v2) In IGD, DPCUNIT_CLOCK_GATE_DISABLE bit should be set, otherwise i2c access will be wrong. v2: Disable CLOCK_GATE_DISABLE bit after bit bashing as suggested by Eric. Signed-off-by: Shaohua Li Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/i915_reg.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/drm/i915/i915_reg.h') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 52119473226..15da44cf21b 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -526,6 +526,7 @@ #define DPLLA_INPUT_BUFFER_ENABLE (1 << 0) #define D_STATE 0x6104 #define CG_2D_DIS 0x6200 +#define DPCUNIT_CLOCK_GATE_DISABLE (1 << 24) #define CG_3D_DIS 0x6204 /* -- cgit v1.2.3