static int exynos_drm_connector_get_modes(struct drm_connector *connector) { struct exynos_drm_connector *exynos_connector = to_exynos_connector(connector); struct exynos_drm_manager *manager = exynos_connector->manager; struct exynos_drm_display_ops *display_ops = manager->display_ops; unsigned int count; DRM_DEBUG_KMS("%s\n", __FILE__); if (!display_ops) { DRM_DEBUG_KMS("display_ops is null.\n"); return 0; } /* * if get_edid() exists then get_edid() callback of hdmi side * is called to get edid data through i2c interface else * get timing from the FIMD driver(display controller). * * P.S. in case of lcd panel, count is always 1 if success * because lcd panel has only one mode. */ if (display_ops->get_edid) { int ret; void *edid; edid = kzalloc(MAX_EDID, GFP_KERNEL); if (!edid) { DRM_ERROR("failed to allocate edid\n"); return 0; } ret = display_ops->get_edid(manager->dev, connector, edid, MAX_EDID); if (ret < 0) { DRM_ERROR("failed to get edid data.\n"); kfree(edid); edid = NULL; return 0; } drm_mode_connector_update_edid_property(connector, edid); count = drm_add_edid_modes(connector, edid); kfree(connector->display_info.raw_edid); connector->display_info.raw_edid = edid; } else { struct drm_display_mode *mode = drm_mode_create(connector->dev); struct fb_videomode *timing; if (display_ops->get_timing) timing = display_ops->get_timing(manager->dev); else { drm_mode_destroy(connector->dev, mode); return 0; } convert_to_display_mode(mode, timing); mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; drm_mode_set_name(mode); drm_mode_probed_add(connector, mode); count = 1; } return count; }
static int exynos_drm_connector_get_modes(struct drm_connector *connector) { struct exynos_drm_connector *exynos_connector = to_exynos_connector(connector); struct exynos_drm_manager *manager = exynos_connector->manager; struct exynos_drm_display_ops *display_ops = manager->display_ops; struct edid *edid = NULL; unsigned int count = 0; int ret; if (!display_ops) { DRM_DEBUG_KMS("display_ops is null.\n"); return 0; } /* * if get_edid() exists then get_edid() callback of hdmi side * is called to get edid data through i2c interface else * get timing from the FIMD driver(display controller). * * P.S. in case of lcd panel, count is always 1 if success * because lcd panel has only one mode. */ if (display_ops->get_edid) { edid = display_ops->get_edid(manager->dev, connector); if (IS_ERR_OR_NULL(edid)) { ret = PTR_ERR(edid); edid = NULL; DRM_ERROR("Panel operation get_edid failed %d\n", ret); goto out; } count = drm_add_edid_modes(connector, edid); if (!count) { DRM_ERROR("Add edid modes failed %d\n", count); goto out; } drm_mode_connector_update_edid_property(connector, edid); } else { struct exynos_drm_panel_info *panel; struct drm_display_mode *mode = drm_mode_create(connector->dev); if (!mode) { DRM_ERROR("failed to create a new display mode.\n"); return 0; } if (display_ops->get_panel) panel = display_ops->get_panel(manager->dev); else { drm_mode_destroy(connector->dev, mode); return 0; } convert_to_display_mode(mode, panel); connector->display_info.width_mm = mode->width_mm; connector->display_info.height_mm = mode->height_mm; mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; drm_mode_set_name(mode); drm_mode_probed_add(connector, mode); count = 1; } out: kfree(edid); return count; }