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drm/debugfs: add an "edid_override" file per connector

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Add a file to debugfs for each connector to allow the EDID to be
overridden.

v2: Copy ubuf before accessing it and reject invalid length data. (David
    Herrmann)
    Ensure override_edid is reset when a new EDID value is written.
    (David Herrmann)
    Fix the debugfs file permissions. (David Herrmann)

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Thomas Wood
2014-06-18 17:52:33 +01:00
committed by Daniel Vetter
parent 30f6570798
commit 4cf2b28146
4 changed files with 81 additions and 1 deletions
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include/drm/drm_crtc.h
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@@ -533,6 +533,7 @@ struct drm_connector {
/* forced on connector */
enum drm_connector_force force;
bool override_edid;
uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
struct drm_encoder *encoder; /* currently active encoder */