summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/drm_probe_helper.c
diff options
context:
space:
mode:
authorJani Nikula <jani.nikula@intel.com>2017-09-12 11:19:26 +0300
committerJani Nikula <jani.nikula@intel.com>2017-09-19 17:49:25 +0300
commit53fd40a90f3c0bdad86ec266ee5df833f54ace39 (patch)
treecf35231684c4ffbb0f7c7b79f33d6d0d1a6842a6 /drivers/gpu/drm/drm_probe_helper.c
parentc673fe7f0cd525629db9a87a77610fca137951e0 (diff)
drm: handle override and firmware EDID at drm_do_get_edid() level
Handle debugfs override edid and firmware edid at the low level to transparently and completely replace the real edid. Previously, we practically only used the modes from the override EDID, and none of the other data, such as audio parameters. This change also prevents actual EDID reads when the EDID is to be overridden, but retains the DDC probe. This is useful if the reason for preferring override EDID are problems with reading the data, or corruption of the data. Move firmware EDID loading from helper to core, as the functionality moves to lower level as well. This will result in a change of module parameter from drm_kms_helper.edid_firmware to drm.edid_firmware, which arguably makes more sense anyway. Some future work remains related to override and firmware EDID validation. Like before, no validation is done for override EDID. The firmware EDID is validated separately in the loader. Some unification and deduplication would be in order, to validate all of them at the drm_do_get_edid() level, like "real" EDIDs. v2: move firmware loading to core v3: rebase, commit message refresh Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Tested-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Acked-by: Dave Airlie <airlied@gmail.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1e8a710bcac46e5136c1a7b430074893c81f364a.1505203831.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_probe_helper.c')
-rw-r--r--drivers/gpu/drm/drm_probe_helper.c19
1 files changed, 1 insertions, 18 deletions
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index 904966cde32b..5840aabbf24e 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -353,8 +353,6 @@ EXPORT_SYMBOL(drm_helper_probe_detect);
* drm_mode_probed_add(). New modes start their life with status as OK.
* Modes are added from a single source using the following priority order.
*
- * - debugfs 'override_edid' (used for testing only)
- * - firmware EDID (drm_load_edid_firmware())
* - &drm_connector_helper_funcs.get_modes vfunc
* - if the connector status is connector_status_connected, standard
* VESA DMT modes up to 1024x768 are automatically added
@@ -483,22 +481,7 @@ retry:
goto prune;
}
- if (connector->override_edid) {
- struct edid *edid = (struct edid *) connector->edid_blob_ptr->data;
-
- count = drm_add_edid_modes(connector, edid);
- drm_edid_to_eld(connector, edid);
- } else {
- struct edid *edid = drm_load_edid_firmware(connector);
- if (!IS_ERR_OR_NULL(edid)) {
- drm_mode_connector_update_edid_property(connector, edid);
- count = drm_add_edid_modes(connector, edid);
- drm_edid_to_eld(connector, edid);
- kfree(edid);
- }
- if (count == 0)
- count = (*connector_funcs->get_modes)(connector);
- }
+ count = (*connector_funcs->get_modes)(connector);
if (count == 0 && connector->status == connector_status_connected)
count = drm_add_modes_noedid(connector, 1024, 768);