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path: root/drivers/gpu/drm/i915/i915_reg.h
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
-rw-r--r--drivers/gpu/drm/i915/i915_reg.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8e47b5926c6c..00970aa77afa 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -110,6 +110,10 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define GRDOM_RESET_STATUS (1 << 1)
#define GRDOM_RESET_ENABLE (1 << 0)
+/* BSpec only has register offset, PCI device and bit found empirically */
+#define I830_CLOCK_GATE 0xc8 /* device 0 */
+#define I830_L2_CACHE_CLOCK_GATE_DISABLE (1 << 2)
+
#define GCDGMBUS 0xcc
#define GCFGC2 0xda