-static bool drm_kms_helper_poll = true;
-module_param_named(poll, drm_kms_helper_poll, bool, 0600);
-
-static void drm_mode_validate_flag(struct drm_connector *connector,
- int flags)
-{
- struct drm_display_mode *mode;
-
- if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE |
- DRM_MODE_FLAG_3D_MASK))
- return;
-
- list_for_each_entry(mode, &connector->modes, head) {
- if ((mode->flags & DRM_MODE_FLAG_INTERLACE) &&
- !(flags & DRM_MODE_FLAG_INTERLACE))
- mode->status = MODE_NO_INTERLACE;
- if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) &&
- !(flags & DRM_MODE_FLAG_DBLSCAN))
- mode->status = MODE_NO_DBLESCAN;
- if ((mode->flags & DRM_MODE_FLAG_3D_MASK) &&
- !(flags & DRM_MODE_FLAG_3D_MASK))
- mode->status = MODE_NO_STEREO;
- }
-
- return;
-}
-
-/**
- * drm_helper_probe_single_connector_modes - get complete set of display modes
- * @connector: connector to probe
- * @maxX: max width for modes
- * @maxY: max height for modes
- *
- * LOCKING:
- * Caller must hold mode config lock.
- *
- * Based on the helper callbacks implemented by @connector try to detect all
- * valid modes. Modes will first be added to the connector's probed_modes list,
- * then culled (based on validity and the @maxX, @maxY parameters) and put into
- * the normal modes list.
- *
- * Intended to be use as a generic implementation of the ->fill_modes()
- * @connector vfunc for drivers that use the crtc helpers for output mode
- * filtering and detection.
- *
- * RETURNS:
- * Number of modes found on @connector.
- */
-int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
- uint32_t maxX, uint32_t maxY)
-{
- struct drm_device *dev = connector->dev;
- struct drm_display_mode *mode;
- struct drm_connector_helper_funcs *connector_funcs =
- connector->helper_private;
- int count = 0;
- int mode_flags = 0;
- bool verbose_prune = true;
-
- DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id,
- drm_get_connector_name(connector));
- /* set all modes to the unverified state */
- list_for_each_entry(mode, &connector->modes, head)
- mode->status = MODE_UNVERIFIED;
-
- if (connector->force) {
- if (connector->force == DRM_FORCE_ON)
- connector->status = connector_status_connected;
- else
- connector->status = connector_status_disconnected;
- if (connector->funcs->force)
- connector->funcs->force(connector);
- } else {
- connector->status = connector->funcs->detect(connector, true);
- }
-
- /* Re-enable polling in case the global poll config changed. */
- if (drm_kms_helper_poll != dev->mode_config.poll_running)
- drm_kms_helper_poll_enable(dev);
-
- dev->mode_config.poll_running = drm_kms_helper_poll;
-
- if (connector->status == connector_status_disconnected) {
- DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n",
- connector->base.id, drm_get_connector_name(connector));
- drm_mode_connector_update_edid_property(connector, NULL);
- verbose_prune = false;
- goto prune;
- }
-
-#ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE
- count = drm_load_edid_firmware(connector);
- if (count == 0)
-#endif
- count = (*connector_funcs->get_modes)(connector);
-
- if (count == 0 && connector->status == connector_status_connected)
- count = drm_add_modes_noedid(connector, 1024, 768);
- if (count == 0)
- goto prune;
-
- drm_mode_connector_list_update(connector);
-
- if (maxX && maxY)
- drm_mode_validate_size(dev, &connector->modes, maxX,
- maxY, 0);
-
- if (connector->interlace_allowed)
- mode_flags |= DRM_MODE_FLAG_INTERLACE;
- if (connector->doublescan_allowed)
- mode_flags |= DRM_MODE_FLAG_DBLSCAN;
- if (connector->stereo_allowed)
- mode_flags |= DRM_MODE_FLAG_3D_MASK;
- drm_mode_validate_flag(connector, mode_flags);
-
- list_for_each_entry(mode, &connector->modes, head) {
- if (mode->status == MODE_OK)
- mode->status = connector_funcs->mode_valid(connector,
- mode);
- }
-
-prune:
- drm_mode_prune_invalid(dev, &connector->modes, verbose_prune);
-
- if (list_empty(&connector->modes))
- return 0;
-
- list_for_each_entry(mode, &connector->modes, head)
- mode->vrefresh = drm_mode_vrefresh(mode);
-
- drm_mode_sort(&connector->modes);
-
- DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id,
- drm_get_connector_name(connector));
- list_for_each_entry(mode, &connector->modes, head) {
- drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
- drm_mode_debug_printmodeline(mode);
- }
-
- return count;
-}
-EXPORT_SYMBOL(drm_helper_probe_single_connector_modes);
-