drm/i915: Define bitmasks for ilk pfit window pos/size
Define and use the bitmasks for the x/y components
of the ilk+ panel filter window pos/size registers.
Note that we stick to the full 16 bit mask even though
the actual hardware limits are lower (and somewhat
platform dependent). BDW is actually limited to
13 bits horizontal and 12 bits vertical, with the high
bits being hardwired to zero. HSW should have the same
limits as BDW. And pre-HSW should be limited to 12bits
in both directions as that's already the limit of the
transcoder timing registers. Curiously on HSW and earlier
platforms all 16 bits can actually be set, but presumably
the hardware ignores the high bits.
v2: Switch back to full 16bit masks since that's what
we use transcoder timign regs and PIPESRC as well
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230426135019.7603-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 831a898..faf8ea6 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4015,8 +4015,16 @@
#define PF_FILTER_EDGE_SOFTEN REG_FIELD_PREP(PF_FILTER_EDGE_MASK, 3)
#define _PFA_WIN_SZ 0x68074
#define _PFB_WIN_SZ 0x68874
+#define PF_WIN_XSIZE_MASK REG_GENMASK(31, 16)
+#define PF_WIN_XSIZE(w) REG_FIELD_PREP(PF_WIN_XSIZE_MASK, (w))
+#define PF_WIN_YSIZE_MASK REG_GENMASK(15, 0)
+#define PF_WIN_YSIZE(h) REG_FIELD_PREP(PF_WIN_YSIZE_MASK, (h))
#define _PFA_WIN_POS 0x68070
#define _PFB_WIN_POS 0x68870
+#define PF_WIN_XPOS_MASK REG_GENMASK(31, 16)
+#define PF_WIN_XPOS(x) REG_FIELD_PREP(PF_WIN_XPOS_MASK, (x))
+#define PF_WIN_YPOS_MASK REG_GENMASK(15, 0)
+#define PF_WIN_YPOS(y) REG_FIELD_PREP(PF_WIN_YPOS_MASK, (y))
#define _PFA_VSCALE 0x68084
#define _PFB_VSCALE 0x68884
#define _PFA_HSCALE 0x68090
