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drm/edid: add drm_edid_duplicate 

We have some code duplication related to EDID duplication. Add a helper.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jani Nikula 2013-09-27 15:08:27 +03:00 committed by Dave Airlie
parent c9ff160b16
commit 51f8da5916
2 changed files with 13 additions and 0 deletions
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12
drivers/gpu/drm/drm_edid.c
View File

@ -1264,6 +1264,18 @@ struct edid *drm_get_edid(struct drm_connector *connector,
}
EXPORT_SYMBOL(drm_get_edid);
/**
* drm_edid_duplicate - duplicate an EDID and the extensions
* @edid: EDID to duplicate
*
* Return duplicate edid or NULL on allocation failure.
*/
struct edid *drm_edid_duplicate(const struct edid *edid)
{
return kmemdup(edid, (edid->extensions + 1) * EDID_LENGTH, GFP_KERNEL);
}
EXPORT_SYMBOL(drm_edid_duplicate);
/*** EDID parsing ***/
/**

1
include/drm/drm_crtc.h
View File

@ -964,6 +964,7 @@ extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_m
extern bool drm_probe_ddc(struct i2c_adapter *adapter);
extern struct edid *drm_get_edid(struct drm_connector *connector,
struct i2c_adapter *adapter);
extern struct edid *drm_edid_duplicate(const struct edid *edid);
extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src);