drm/i915: add WM_LINETIME registers

Watermark line time registers for display low power watermark.

v2: improve bit names as suggested by Chris Wilson

Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index fa4d1d3..9b34da9 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4195,4 +4195,14 @@
 #define  LCPLL_CD_CLOCK_DISABLE        (1<<25)
 #define  LCPLL_CD2X_CLOCK_DISABLE      (1<<23)
 
+/* Pipe WM_LINETIME - watermark line time */
+#define PIPE_WM_LINETIME_A             0x45270
+#define PIPE_WM_LINETIME_B             0x45274
+#define PIPE_WM_LINETIME(pipe) _PIPE(pipe, \
+                                       PIPE_WM_LINETIME_A, \
+                                       PIPE_WM_LINETIME_A)
+#define   PIPE_WM_LINETIME_MASK                (0x1ff)
+#define   PIPE_WM_LINETIME_TIME(x)                     ((x))
+#define   PIPE_WM_LINETIME_IPS_LINETIME_MASK   (0x1ff<<16)
+#define   PIPE_WM_LINETIME_IPS_LINETIME(x)             ((x)<<16)
 #endif /* _I915_REG_H_ */