[RFC 1/3] drm/i915: Add Dark screen detection registers

[Suraj Kandpal]

Add Dark screen detection related register and field definitions.

Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
Signed-off-by: Nemesa Garg <nemesa.garg at intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8eb6c2bf4557..474b1c263517 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1838,6 +1838,14 @@
 #define VRR_VSYNC_START_MASK		REG_GENMASK(12, 0)
 #define VRR_VSYNC_START(vsync_start)	REG_FIELD_PREP(VRR_VSYNC_START_MASK, (vsync_start))
 
+#define _DARK_SCREEN_PIPE_A		0x60120
+#define DARK_SCREEN(trans)		_MMIO_TRANS2(trans, _DARK_SCREEN_PIPE_A)
+#define   DARK_SCREEN_ENABLE		REG_BIT(31)
+#define   DARK_SCREEN_DETECT		REG_BIT(29)
+#define   DARK_SCREEN_DONE		REG_BIT(28)
+#define DARK_SCREEN_COMPARE_MASK	REG_GENMASK(9, 0)
+#define DARK_SCREEN_COMPARE_VAL(x)	REG_FIELD_PREP(DARK_SCREEN_COMPARE_MASK, (x))
+
 /* VGA port control */
 #define ADPA			_MMIO(0x61100)
 #define PCH_ADPA                _MMIO(0xe1100)
-- 
2.43.2