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drm/panel: simple: Set appropriate mode type 

All modes exposed by simple panels should be tagged as driver defined
modes. Moreover, if a panel supports only one mode, this mode is
obviously the preferred one.

Doing this also fix a problem occurring when a 'video=' parameter is
passed on the kernel command line. In some cases the user provided mode
will be preferred over the simple panel ones, which might result in
unpredictable behavior.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Nicolas Ferre <nicolas.ferre@atmel.com>
[treding@nvidia.com: reshuffle some code for consistency]
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Boris Brezillon 2016-04-15 18:23:33 +02:00 committed by Thierry Reding
parent cf5c9e6dc7
commit cda553725c
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/panel/panel-simple.c
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@ -117,6 +117,12 @@ static int panel_simple_get_fixed_modes(struct panel_simple *panel)
}
drm_display_mode_from_videomode(&vm, mode);
mode->type |= DRM_MODE_TYPE_DRIVER;
if (panel->desc->num_modes == 1)
mode->type |= DRM_MODE_TYPE_PREFERRED;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
@ -133,6 +139,11 @@ static int panel_simple_get_fixed_modes(struct panel_simple *panel)
continue;
}
mode->type |= DRM_MODE_TYPE_DRIVER;
if (panel->desc->num_modes == 1)
mode->type |= DRM_MODE_TYPE_PREFERRED;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);