drm/i915: add SFUSE_STRAP registers for digital port detection

DDIA is detected via the DDI_BUF_CTL registers bit 0, but for DDIB, DDIC
and DDID we need to consult SFUSE_STRAP values.

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 9b34da9..0f6f567 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4205,4 +4205,11 @@
 #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)
+
+/* SFUSE_STRAP */
+#define SFUSE_STRAP                            0xc2014
+#define  SFUSE_STRAP_DDIB_DETECTED     (1<<2)
+#define  SFUSE_STRAP_DDIC_DETECTED     (1<<1)
+#define  SFUSE_STRAP_DDID_DETECTED     (1<<0)
+
 #endif /* _I915_REG_H_ */