| /* exynos_drm_core.c |
| * |
| * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| * Author: |
| * Inki Dae <inki.dae@samsung.com> |
| * Joonyoung Shim <jy0922.shim@samsung.com> |
| * Seung-Woo Kim <sw0312.kim@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| */ |
| |
| #include <drm/drmP.h> |
| #include "exynos_drm_drv.h" |
| #include "exynos_drm_crtc.h" |
| #include "exynos_drm_fbdev.h" |
| |
| static LIST_HEAD(exynos_drm_subdrv_list); |
| |
| int exynos_drm_subdrv_register(struct exynos_drm_subdrv *subdrv) |
| { |
| if (!subdrv) |
| return -EINVAL; |
| |
| list_add_tail(&subdrv->list, &exynos_drm_subdrv_list); |
| |
| return 0; |
| } |
| |
| int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *subdrv) |
| { |
| if (!subdrv) |
| return -EINVAL; |
| |
| list_del(&subdrv->list); |
| |
| return 0; |
| } |
| |
| int exynos_drm_device_subdrv_probe(struct drm_device *dev) |
| { |
| struct exynos_drm_subdrv *subdrv, *n; |
| int err; |
| |
| if (!dev) |
| return -EINVAL; |
| |
| list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) { |
| if (subdrv->probe) { |
| subdrv->drm_dev = dev; |
| |
| /* |
| * this probe callback would be called by sub driver |
| * after setting of all resources to this sub driver, |
| * such as clock, irq and register map are done. |
| */ |
| err = subdrv->probe(dev, subdrv->dev); |
| if (err) { |
| DRM_DEBUG("exynos drm subdrv probe failed.\n"); |
| list_del(&subdrv->list); |
| continue; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| int exynos_drm_device_subdrv_remove(struct drm_device *dev) |
| { |
| struct exynos_drm_subdrv *subdrv; |
| |
| if (!dev) { |
| WARN(1, "Unexpected drm device unregister!\n"); |
| return -EINVAL; |
| } |
| |
| list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { |
| if (subdrv->remove) |
| subdrv->remove(dev, subdrv->dev); |
| } |
| |
| return 0; |
| } |
| |
| int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file) |
| { |
| struct exynos_drm_subdrv *subdrv; |
| int ret; |
| |
| list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { |
| if (subdrv->open) { |
| ret = subdrv->open(dev, subdrv->dev, file); |
| if (ret) |
| goto err; |
| } |
| } |
| |
| return 0; |
| |
| err: |
| list_for_each_entry_continue_reverse(subdrv, &exynos_drm_subdrv_list, list) { |
| if (subdrv->close) |
| subdrv->close(dev, subdrv->dev, file); |
| } |
| return ret; |
| } |
| |
| void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file) |
| { |
| struct exynos_drm_subdrv *subdrv; |
| |
| list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) { |
| if (subdrv->close) |
| subdrv->close(dev, subdrv->dev, file); |
| } |
| } |