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| author | Jani Nikula <jani.nikula@intel.com> | 2013-09-27 15:08:27 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2013-10-01 10:31:01 +1000 |
| commit | 51f8da5916f85c18b696f74f97970e5a7330147e (patch) | |
| tree | dbda932b06e62425c2cdfc33a06040fac3de118d | |
| parent | c9ff160b169b4db1e562001f08add446c1f469c7 (diff) | |
| download | linux-51f8da5916f85c18b696f74f97970e5a7330147e.tar.bz2 | |
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>
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 12 | ||||
| -rw-r--r-- | include/drm/drm_crtc.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 1688ff500513..3140a30aa818 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -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 ***/ /** diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 24f499569a2f..92e782060199 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -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); |