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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_debugfs.c | |
| parent | f999b37eefd7f1d59bece1d94fa0dbee2f2d62d6 (diff) | |
| download | lwn-6aa145bc943d34bf05f2bc24ea3aa36d70470f1d.tar.gz lwn-6aa145bc943d34bf05f2bc24ea3aa36d70470f1d.zip | |
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_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/drm_debugfs.c | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index fb04b7a984de..493922069c90 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -350,31 +350,20 @@ static ssize_t edid_write(struct file *file, const char __user *ubuf, struct seq_file *m = file->private_data; struct drm_connector *connector = m->private; char *buf; - struct edid *edid; int ret; buf = memdup_user(ubuf, len); if (IS_ERR(buf)) return PTR_ERR(buf); - edid = (struct edid *) buf; - - if (len == 5 && !strncmp(buf, "reset", 5)) { - connector->override_edid = false; - ret = drm_connector_update_edid_property(connector, NULL); - } else if (len < EDID_LENGTH || - EDID_LENGTH * (1 + edid->extensions) > len) - ret = -EINVAL; - else { - connector->override_edid = false; - ret = drm_connector_update_edid_property(connector, edid); - if (!ret) - connector->override_edid = true; - } + if (len == 5 && !strncmp(buf, "reset", 5)) + ret = drm_edid_override_reset(connector); + else + ret = drm_edid_override_set(connector, buf, len); kfree(buf); - return (ret) ? ret : len; + return ret ? ret : len; } /* |