drm/i915: add enumeration for DDI ports
There are 5 DDI ports on Haswell. Port A is always enabled, and is the one
connected to eDP, and Port E is the one that can be connected to the PCH
using FDI protocol. Ports B, C, D and E can be used for digital outputs.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d7a5146..b617cd5 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -63,6 +63,16 @@
};
#define plane_name(p) ((p) + 'A')
+enum port {
+ PORT_A = 0,
+ PORT_B,
+ PORT_C,
+ PORT_D,
+ PORT_E,
+ I915_MAX_PORTS
+};
+#define port_name(p) ((p) + 'A')
+
#define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
#define for_each_pipe(p) for ((p) = 0; (p) < dev_priv->num_pipe; (p)++)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 61ee414..bca37b3 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -27,6 +27,8 @@
#define _PIPE(pipe, a, b) ((a) + (pipe)*((b)-(a)))
+#define _PORT(port, a, b) ((a) + (port)*((b)-(a)))
+
/*
* The Bridge device's PCI config space has information about the
* fb aperture size and the amount of pre-reserved memory.