1 /* 2 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 3 * Authors: 4 * Inki Dae <inki.dae@samsung.com> 5 * Joonyoung Shim <jy0922.shim@samsung.com> 6 * Seung-Woo Kim <sw0312.kim@samsung.com> 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a 9 * copy of this software and associated documentation files (the "Software"), 10 * to deal in the Software without restriction, including without limitation 11 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 12 * and/or sell copies of the Software, and to permit persons to whom the 13 * Software is furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the next 16 * paragraph) shall be included in all copies or substantial portions of the 17 * Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 25 * OTHER DEALINGS IN THE SOFTWARE. 26 */ 27 28 #include "drmP.h" 29 #include "drm.h" 30 #include "drm_crtc_helper.h" 31 32 #include <drm/exynos_drm.h> 33 34 #include "exynos_drm_drv.h" 35 #include "exynos_drm_crtc.h" 36 #include "exynos_drm_fbdev.h" 37 #include "exynos_drm_fb.h" 38 #include "exynos_drm_gem.h" 39 #include "exynos_drm_plane.h" 40 41 #define DRIVER_NAME "exynos" 42 #define DRIVER_DESC "Samsung SoC DRM" 43 #define DRIVER_DATE "20110530" 44 #define DRIVER_MAJOR 1 45 #define DRIVER_MINOR 0 46 47 #define VBLANK_OFF_DELAY 50000 48 49 static int exynos_drm_load(struct drm_device *dev, unsigned long flags) 50 { 51 struct exynos_drm_private *private; 52 int ret; 53 int nr; 54 55 DRM_DEBUG_DRIVER("%s\n", __FILE__); 56 57 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); 58 if (!private) { 59 DRM_ERROR("failed to allocate private\n"); 60 return -ENOMEM; 61 } 62 63 INIT_LIST_HEAD(&private->pageflip_event_list); 64 dev->dev_private = (void *)private; 65 66 drm_mode_config_init(dev); 67 68 /* init kms poll for handling hpd */ 69 drm_kms_helper_poll_init(dev); 70 71 exynos_drm_mode_config_init(dev); 72 73 /* 74 * EXYNOS4 is enough to have two CRTCs and each crtc would be used 75 * without dependency of hardware. 76 */ 77 for (nr = 0; nr < MAX_CRTC; nr++) { 78 ret = exynos_drm_crtc_create(dev, nr); 79 if (ret) 80 goto err_crtc; 81 } 82 83 for (nr = 0; nr < MAX_PLANE; nr++) { 84 ret = exynos_plane_init(dev, nr); 85 if (ret) 86 goto err_crtc; 87 } 88 89 ret = drm_vblank_init(dev, MAX_CRTC); 90 if (ret) 91 goto err_crtc; 92 93 /* 94 * probe sub drivers such as display controller and hdmi driver, 95 * that were registered at probe() of platform driver 96 * to the sub driver and create encoder and connector for them. 97 */ 98 ret = exynos_drm_device_register(dev); 99 if (ret) 100 goto err_vblank; 101 102 /* 103 * create and configure fb helper and also exynos specific 104 * fbdev object. 105 */ 106 ret = exynos_drm_fbdev_init(dev); 107 if (ret) { 108 DRM_ERROR("failed to initialize drm fbdev\n"); 109 goto err_drm_device; 110 } 111 112 drm_vblank_offdelay = VBLANK_OFF_DELAY; 113 114 return 0; 115 116 err_drm_device: 117 exynos_drm_device_unregister(dev); 118 err_vblank: 119 drm_vblank_cleanup(dev); 120 err_crtc: 121 drm_mode_config_cleanup(dev); 122 kfree(private); 123 124 return ret; 125 } 126 127 static int exynos_drm_unload(struct drm_device *dev) 128 { 129 DRM_DEBUG_DRIVER("%s\n", __FILE__); 130 131 exynos_drm_fbdev_fini(dev); 132 exynos_drm_device_unregister(dev); 133 drm_vblank_cleanup(dev); 134 drm_kms_helper_poll_fini(dev); 135 drm_mode_config_cleanup(dev); 136 kfree(dev->dev_private); 137 138 dev->dev_private = NULL; 139 140 return 0; 141 } 142 143 static void exynos_drm_preclose(struct drm_device *dev, 144 struct drm_file *file_priv) 145 { 146 struct exynos_drm_private *dev_priv = dev->dev_private; 147 148 /* 149 * drm framework frees all events at release time, 150 * so private event list should be cleared. 151 */ 152 if (!list_empty(&dev_priv->pageflip_event_list)) 153 INIT_LIST_HEAD(&dev_priv->pageflip_event_list); 154 } 155 156 static void exynos_drm_lastclose(struct drm_device *dev) 157 { 158 DRM_DEBUG_DRIVER("%s\n", __FILE__); 159 160 exynos_drm_fbdev_restore_mode(dev); 161 } 162 163 static struct vm_operations_struct exynos_drm_gem_vm_ops = { 164 .fault = exynos_drm_gem_fault, 165 .open = drm_gem_vm_open, 166 .close = drm_gem_vm_close, 167 }; 168 169 static struct drm_ioctl_desc exynos_ioctls[] = { 170 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, 171 DRM_UNLOCKED | DRM_AUTH), 172 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET, 173 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED | 174 DRM_AUTH), 175 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP, 176 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH), 177 DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl, 178 DRM_UNLOCKED | DRM_AUTH), 179 }; 180 181 static const struct file_operations exynos_drm_driver_fops = { 182 .owner = THIS_MODULE, 183 .open = drm_open, 184 .mmap = exynos_drm_gem_mmap, 185 .poll = drm_poll, 186 .read = drm_read, 187 .unlocked_ioctl = drm_ioctl, 188 .release = drm_release, 189 }; 190 191 static struct drm_driver exynos_drm_driver = { 192 .driver_features = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM | 193 DRIVER_MODESET | DRIVER_GEM, 194 .load = exynos_drm_load, 195 .unload = exynos_drm_unload, 196 .preclose = exynos_drm_preclose, 197 .lastclose = exynos_drm_lastclose, 198 .get_vblank_counter = drm_vblank_count, 199 .enable_vblank = exynos_drm_crtc_enable_vblank, 200 .disable_vblank = exynos_drm_crtc_disable_vblank, 201 .gem_init_object = exynos_drm_gem_init_object, 202 .gem_free_object = exynos_drm_gem_free_object, 203 .gem_vm_ops = &exynos_drm_gem_vm_ops, 204 .dumb_create = exynos_drm_gem_dumb_create, 205 .dumb_map_offset = exynos_drm_gem_dumb_map_offset, 206 .dumb_destroy = exynos_drm_gem_dumb_destroy, 207 .ioctls = exynos_ioctls, 208 .fops = &exynos_drm_driver_fops, 209 .name = DRIVER_NAME, 210 .desc = DRIVER_DESC, 211 .date = DRIVER_DATE, 212 .major = DRIVER_MAJOR, 213 .minor = DRIVER_MINOR, 214 }; 215 216 static int exynos_drm_platform_probe(struct platform_device *pdev) 217 { 218 DRM_DEBUG_DRIVER("%s\n", __FILE__); 219 220 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls); 221 222 return drm_platform_init(&exynos_drm_driver, pdev); 223 } 224 225 static int exynos_drm_platform_remove(struct platform_device *pdev) 226 { 227 DRM_DEBUG_DRIVER("%s\n", __FILE__); 228 229 drm_platform_exit(&exynos_drm_driver, pdev); 230 231 return 0; 232 } 233 234 static struct platform_driver exynos_drm_platform_driver = { 235 .probe = exynos_drm_platform_probe, 236 .remove = __devexit_p(exynos_drm_platform_remove), 237 .driver = { 238 .owner = THIS_MODULE, 239 .name = DRIVER_NAME, 240 }, 241 }; 242 243 static int __init exynos_drm_init(void) 244 { 245 DRM_DEBUG_DRIVER("%s\n", __FILE__); 246 247 return platform_driver_register(&exynos_drm_platform_driver); 248 } 249 250 static void __exit exynos_drm_exit(void) 251 { 252 DRM_DEBUG_DRIVER("%s\n", __FILE__); 253 254 platform_driver_unregister(&exynos_drm_platform_driver); 255 } 256 257 module_init(exynos_drm_init); 258 module_exit(exynos_drm_exit); 259 260 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); 261 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); 262 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); 263 MODULE_DESCRIPTION("Samsung SoC DRM Driver"); 264 MODULE_LICENSE("GPL"); 265