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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /* 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" 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); } } |