diff options
Diffstat (limited to 'linux-core/drm_crtc_helper.c')
| -rw-r--r-- | linux-core/drm_crtc_helper.c | 68 |
1 files changed, 59 insertions, 9 deletions
diff --git a/linux-core/drm_crtc_helper.c b/linux-core/drm_crtc_helper.c index a4168f68..2ceaa860 100644 --- a/linux-core/drm_crtc_helper.c +++ b/linux-core/drm_crtc_helper.c @@ -386,7 +386,7 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mo if (encoder->crtc != crtc) continue; - encoder_funcs = encoder->helper_private; + encoder_funcs = encoder->helper_private; if (!(ret = encoder_funcs->mode_fixup(encoder, mode, adjusted_mode))) { goto done; } @@ -475,12 +475,14 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) { struct drm_device *dev; struct drm_crtc **save_crtcs, *new_crtc; + struct drm_encoder **save_encoders, *new_encoder; bool save_enabled; bool changed = false; bool flip_or_move = false; struct drm_connector *connector; - int count = 0, ro; + int count = 0, ro, fail = 0; struct drm_crtc_helper_funcs *crtc_funcs; + int ret = 0; DRM_DEBUG("\n"); @@ -506,6 +508,12 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) if (!save_crtcs) return -ENOMEM; + save_encoders = kzalloc(dev->mode_config.num_connector * sizeof(struct drm_encoders *), GFP_KERNEL); + if (!save_encoders) { + kfree(save_crtcs); + return -ENOMEM; + } + /* 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) @@ -521,6 +529,35 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) changed = true; } + /* a) traverse passed in connector list and get encoders for them */ + count = 0; + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + struct drm_connector_helper_funcs *connector_funcs = connector->helper_private; + save_encoders[count++] = connector->encoder; + new_encoder = NULL; + for (ro = 0; ro < set->num_connectors; ro++) { + if (set->connectors[ro] == connector) { + new_encoder = connector_funcs->best_encoder(connector); + /* if we can't get an encoder for a connector + we are setting now - then fail */ + if (new_encoder == NULL) + /* don't break so fail path works correct */ + fail = 1; + break; + } + } + + if (new_encoder != connector->encoder) { + changed = true; + connector->encoder = new_encoder; + } + } + + if (fail) { + ret = -EINVAL; + goto fail_no_encoder; + } + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { if (!connector->encoder) continue; @@ -553,13 +590,9 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) DRM_DEBUG("attempting to set mode from userspace\n"); drm_mode_debug_printmodeline(set->mode); if (!drm_crtc_helper_set_mode(set->crtc, set->mode, set->x, - set->y)) { - set->crtc->enabled = save_enabled; - count = 0; - list_for_each_entry(connector, &dev->mode_config.connector_list, head) - connector->encoder->crtc = save_crtcs[count++]; - kfree(save_crtcs); - return -EINVAL; + set->y)) { + ret = -EINVAL; + goto fail_set_mode; } /* TODO are these needed? */ set->crtc->desired_x = set->x; @@ -573,8 +606,25 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set) crtc_funcs->mode_set_base(set->crtc, set->x, set->y); } + kfree(save_encoders); kfree(save_crtcs); return 0; + +fail_set_mode: + set->crtc->enabled = save_enabled; + count = 0; + list_for_each_entry(connector, &dev->mode_config.connector_list, head) + connector->encoder->crtc = save_crtcs[count++]; +fail_no_encoder: + kfree(save_crtcs); + count = 0; + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + connector->encoder = save_encoders[count++]; + } + kfree(save_encoders); + return ret; + + } EXPORT_SYMBOL(drm_crtc_helper_set_config); |