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| author | Jani Nikula <jani.nikula@intel.com> | 2022-06-29 12:27:49 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2022-06-30 10:50:59 +0300 |
| commit | 6aa145bc943d34bf05f2bc24ea3aa36d70470f1d (patch) | |
| tree | ec9eaa127c9151879a744876038efc471464e102 /drivers/gpu/drm/drm_edid.c | |
| parent | f999b37eefd7f1d59bece1d94fa0dbee2f2d62d6 (diff) | |
| download | linux-6aa145bc943d34bf05f2bc24ea3aa36d70470f1d.tar.xz | |
drm/edid: abstract debugfs override EDID set/reset
Add functions drm_edid_override_set() and drm_edid_override_reset() to
support "edid_override" connector debugfs, and to hide the details about
it in drm_edid.c. No functional changes at this time.
Also note in the connector.override_edid flag kernel-doc that this is
only supposed to be modified by the code doing debugfs EDID override
handling. Currently, it is still being modified by amdgpu in
create_eml_sink() and handle_edid_mgmt() for reasons unknown. This was
added in commit 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)")
and later moved to amdgpu_dm.c in commit e7b07ceef2a6 ("drm/amd/display:
Merge amdgpu_dm_types and amdgpu_dm").
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8f6b4001630cafac5f44aa5913429ac9979743d2.1656494768.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index e360e1a269f4..c3f0f0a5a8a9 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2161,6 +2161,32 @@ static struct edid *drm_get_override_edid(struct drm_connector *connector, return IS_ERR(override) ? NULL : override; } +/* For debugfs edid_override implementation */ +int drm_edid_override_set(struct drm_connector *connector, const void *edid, + size_t size) +{ + int ret; + + if (size < EDID_LENGTH || edid_size(edid) > size) + return -EINVAL; + + connector->override_edid = false; + + ret = drm_connector_update_edid_property(connector, edid); + if (!ret) + connector->override_edid = true; + + return ret; +} + +/* For debugfs edid_override implementation */ +int drm_edid_override_reset(struct drm_connector *connector) +{ + connector->override_edid = false; + + return drm_connector_update_edid_property(connector, NULL); +} + /** * drm_add_override_edid_modes - add modes from override/firmware EDID * @connector: connector we're probing |