diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-11-07 10:39:57 -0800 |
|---|---|---|
| committer | Eugeni Dodonov <eugeni.dodonov@intel.com> | 2012-02-10 18:01:19 -0200 |
| commit | 5ee10e0be17bb6a3eca2e597545ffce14186c5bd (patch) | |
| tree | 6c7dd4da43a596430cda19810802474e3bcb341d | |
| parent | 955f4cc0488621e800a8faf73fbdb4e494994839 (diff) | |
drm: try to restore previous CRTC config if mode set fails
We restore the CRTC, encoder, and connector configurations, but if the
mode set failed, the attached display may have been turned off, so we
need to try set_config again to restore things to the way they were.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_helper.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 6491d217154..24b31edb837 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -503,6 +503,7 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) struct drm_connector *save_connectors, *connector; int count = 0, ro, fail = 0; struct drm_crtc_helper_funcs *crtc_funcs; + struct drm_mode_set save_set; int ret = 0; int i; @@ -574,6 +575,12 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) save_connectors[count++] = *connector; } + save_set.crtc = set->crtc; + save_set.mode = &set->crtc->mode; + save_set.x = set->crtc->x; + save_set.y = set->crtc->y; + save_set.fb = set->crtc->fb; + /* We should be able to check here if the fb has the same properties * and then just flip_or_move it */ if (set->crtc->fb != set->fb) { @@ -734,6 +741,12 @@ fail: *connector = save_connectors[count++]; } + /* Try to restore the config */ + if (mode_changed && + !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, + save_set.y, save_set.fb)) + DRM_ERROR("failed to restore config after modeset failure\n"); + kfree(save_connectors); kfree(save_encoders); kfree(save_crtcs); |