drivers/gpu/drm/exynos/exynos_drm_drv.c

   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)
 145 {
 146         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 147
 148 }
 149
 150 static void exynos_drm_lastclose(struct drm_device *dev)
 151 {
 152         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 153
 154         exynos_drm_fbdev_restore_mode(dev);
 155 }
 156
 157 static struct vm_operations_struct exynos_drm_gem_vm_ops = {
 158         .fault = exynos_drm_gem_fault,
 159         .open = drm_gem_vm_open,
 160         .close = drm_gem_vm_close,
 161 };
 162
 163 static struct drm_ioctl_desc exynos_ioctls[] = {
 164         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
 165                         DRM_UNLOCKED | DRM_AUTH),
 166         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
 167                         exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 168                         DRM_AUTH),
 169         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
 170                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 171         DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
 172                         DRM_UNLOCKED | DRM_AUTH),
 173 };
 174
 175 static const struct file_operations exynos_drm_driver_fops = {
 176         .owner          = THIS_MODULE,
 177         .open           = drm_open,
 178         .mmap           = exynos_drm_gem_mmap,
 179         .poll           = drm_poll,
 180         .read           = drm_read,
 181         .unlocked_ioctl = drm_ioctl,
 182         .release        = drm_release,
 183 };
 184
 185 static struct drm_driver exynos_drm_driver = {
 186         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
 187                                   DRIVER_MODESET | DRIVER_GEM,
 188         .load                   = exynos_drm_load,
 189         .unload                 = exynos_drm_unload,
 190         .preclose               = exynos_drm_preclose,
 191         .lastclose              = exynos_drm_lastclose,
 192         .get_vblank_counter     = drm_vblank_count,
 193         .enable_vblank          = exynos_drm_crtc_enable_vblank,
 194         .disable_vblank         = exynos_drm_crtc_disable_vblank,
 195         .gem_init_object        = exynos_drm_gem_init_object,
 196         .gem_free_object        = exynos_drm_gem_free_object,
 197         .gem_vm_ops             = &exynos_drm_gem_vm_ops,
 198         .dumb_create            = exynos_drm_gem_dumb_create,
 199         .dumb_map_offset        = exynos_drm_gem_dumb_map_offset,
 200         .dumb_destroy           = exynos_drm_gem_dumb_destroy,
 201         .ioctls                 = exynos_ioctls,
 202         .fops                   = &exynos_drm_driver_fops,
 203         .name   = DRIVER_NAME,
 204         .desc   = DRIVER_DESC,
 205         .date   = DRIVER_DATE,
 206         .major  = DRIVER_MAJOR,
 207         .minor  = DRIVER_MINOR,
 208 };
 209
 210 static int exynos_drm_platform_probe(struct platform_device *pdev)
 211 {
 212         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 213
 214         exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
 215
 216         return drm_platform_init(&exynos_drm_driver, pdev);
 217 }
 218
 219 static int exynos_drm_platform_remove(struct platform_device *pdev)
 220 {
 221         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 222
 223         drm_platform_exit(&exynos_drm_driver, pdev);
 224
 225         return 0;
 226 }
 227
 228 static struct platform_driver exynos_drm_platform_driver = {
 229         .probe          = exynos_drm_platform_probe,
 230         .remove         = __devexit_p(exynos_drm_platform_remove),
 231         .driver         = {
 232                 .owner  = THIS_MODULE,
 233                 .name   = DRIVER_NAME,
 234         },
 235 };
 236
 237 static int __init exynos_drm_init(void)
 238 {
 239         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 240
 241         return platform_driver_register(&exynos_drm_platform_driver);
 242 }
 243
 244 static void __exit exynos_drm_exit(void)
 245 {
 246         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 247
 248         platform_driver_unregister(&exynos_drm_platform_driver);
 249 }
 250
 251 module_init(exynos_drm_init);
 252 module_exit(exynos_drm_exit);
 253
 254 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
 255 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 256 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
 257 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
 258 MODULE_LICENSE("GPL");