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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>
This commit is contained in:
Eugeni Dodonov 2012-03-29 12:32:22 -03:00 committed by Daniel Vetter
parent 9eb3a75276
commit 2b13952200
2 changed files with 12 additions and 0 deletions
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10
drivers/gpu/drm/i915/i915_drv.h
View File

@ -63,6 +63,16 @@ enum plane {
};
#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)++)

2
drivers/gpu/drm/i915/i915_reg.h
View File

@ -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.