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drm/client: Look for command-line modes first

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When picking a mode, first look for modes that have been specified
by the user on the kernel's command line. Only if that fails, use
the existing heuristic of picking a nearby mode from it's various
parameters.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220511183125.14294-3-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2022-05-11 20:31:24 +02:00
parent b6415bd738
commit b959eb4f5b
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/drm_client_modeset.c
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@ -165,6 +165,17 @@ drm_connector_pick_cmdline_mode(struct drm_connector *connector)
struct drm_display_mode *mode;
bool prefer_non_interlace;
/*
* Find a user-defined mode. If the user gave us a valid
* mode on the kernel command line, it will show up in this
* list.
*/
list_for_each_entry(mode, &connector->modes, head) {
if (mode->type & DRM_MODE_TYPE_USERDEF)
return mode;
}
cmdline_mode = &connector->cmdline_mode;
if (cmdline_mode->specified == false)
return NULL;