drivers/gpu/drm/rockchip/rockchip_drm_drv.c

   1 /*
   2  * Copyright (C) ROCKCHIP, Inc.
   3  * Author:yzq<yzq@rock-chips.com>
   4  * This software is licensed under the terms of the GNU General Public
   5  * License version 2, as published by the Free Software Foundation, and
   6  * may be copied, distributed, and modified under those terms.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #include <drm/drmP.h>
  15 #include <drm/drm_crtc_helper.h>
  16
  17 #include <drm/rockchip_drm.h>
  18
  19 #include "rockchip_drm_drv.h"
  20 #include "rockchip_drm_crtc.h"
  21 #include "rockchip_drm_encoder.h"
  22 #include "rockchip_drm_fbdev.h"
  23 #include "rockchip_drm_fb.h"
  24 #include "rockchip_drm_gem.h"
  25 #include "rockchip_drm_plane.h"
  26 #include "rockchip_drm_dmabuf.h"
  27 #include "rockchip_drm_iommu.h"
  28
  29 #define DRIVER_NAME     "rockchip"
  30 #define DRIVER_DESC     "rockchip Soc DRM"
  31 #define DRIVER_DATE     "20140318"
  32 #define DRIVER_MAJOR    1
  33 #define DRIVER_MINOR    0
  34
  35 #define VBLANK_OFF_DELAY        50000
  36
  37 /* platform device pointer for eynos drm device. */
  38 static struct platform_device *rockchip_drm_pdev;
  39
  40 static int rockchip_drm_load(struct drm_device *dev, unsigned long flags)
  41 {
  42         struct rockchip_drm_private *private;
  43         int ret;
  44         int nr;
  45
  46         DRM_DEBUG_DRIVER("%s\n", __FILE__);
  47
  48         private = kzalloc(sizeof(struct rockchip_drm_private), GFP_KERNEL);
  49         if (!private) {
  50                 DRM_ERROR("failed to allocate private\n");
  51                 return -ENOMEM;
  52         }
  53
  54         INIT_LIST_HEAD(&private->pageflip_event_list);
  55         dev->dev_private = (void *)private;
  56
  57         /*
  58          * create mapping to manage iommu table and set a pointer to iommu
  59          * mapping structure to iommu_mapping of private data.
  60          * also this iommu_mapping can be used to check if iommu is supported
  61          * or not.
  62          */
  63         ret = drm_create_iommu_mapping(dev);
  64         if (ret < 0) {
  65                 DRM_ERROR("failed to create iommu mapping.\n");
  66                 goto err_crtc;
  67         }
  68
  69         drm_mode_config_init(dev);
  70
  71         /* init kms poll for handling hpd */
  72         drm_kms_helper_poll_init(dev);
  73
  74         rockchip_drm_mode_config_init(dev);
  75
  76         /*
  77          * ROCKCHIP4 is enough to have two CRTCs and each crtc would be used
  78          * without dependency of hardware.
  79          */
  80         for (nr = 0; nr < MAX_CRTC; nr++) {
  81                 ret = rockchip_drm_crtc_create(dev, nr);
  82                 if (ret)
  83                         goto err_release_iommu_mapping;
  84         }
  85
  86         for (nr = 0; nr < MAX_PLANE; nr++) {
  87                 struct drm_plane *plane;
  88                 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
  89
  90                 plane = rockchip_plane_init(dev, possible_crtcs, false);
  91                 if (!plane)
  92                         goto err_release_iommu_mapping;
  93         }
  94
  95         ret = drm_vblank_init(dev, MAX_CRTC);
  96         if (ret)
  97                 goto err_release_iommu_mapping;
  98
  99         /*
 100          * probe sub drivers such as display controller and hdmi driver,
 101          * that were registered at probe() of platform driver
 102          * to the sub driver and create encoder and connector for them.
 103          */
 104         ret = rockchip_drm_device_register(dev);
 105         if (ret)
 106                 goto err_vblank;
 107
 108         /* setup possible_clones. */
 109         rockchip_drm_encoder_setup(dev);
 110
 111         /*
 112          * create and configure fb helper and also rockchip specific
 113          * fbdev object.
 114          */
 115         ret = rockchip_drm_fbdev_init(dev);
 116         if (ret) {
 117                 DRM_ERROR("failed to initialize drm fbdev\n");
 118                 goto err_drm_device;
 119         }
 120
 121         drm_vblank_offdelay = VBLANK_OFF_DELAY;
 122
 123         return 0;
 124
 125 err_drm_device:
 126         rockchip_drm_device_unregister(dev);
 127 err_vblank:
 128         drm_vblank_cleanup(dev);
 129 err_release_iommu_mapping:
 130         drm_release_iommu_mapping(dev);
 131 err_crtc:
 132         drm_mode_config_cleanup(dev);
 133         kfree(private);
 134
 135         return ret;
 136 }
 137
 138 static int rockchip_drm_unload(struct drm_device *dev)
 139 {
 140         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 141
 142         rockchip_drm_fbdev_fini(dev);
 143         rockchip_drm_device_unregister(dev);
 144         drm_vblank_cleanup(dev);
 145         drm_kms_helper_poll_fini(dev);
 146         drm_mode_config_cleanup(dev);
 147
 148         drm_release_iommu_mapping(dev);
 149         kfree(dev->dev_private);
 150
 151         dev->dev_private = NULL;
 152
 153         return 0;
 154 }
 155
 156 static int rockchip_drm_open(struct drm_device *dev, struct drm_file *file)
 157 {
 158         struct drm_rockchip_file_private *file_priv;
 159
 160         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 161
 162         file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
 163         if (!file_priv)
 164                 return -ENOMEM;
 165
 166         file->driver_priv = file_priv;
 167
 168         return rockchip_drm_subdrv_open(dev, file);
 169 }
 170
 171 static void rockchip_drm_preclose(struct drm_device *dev,
 172                                         struct drm_file *file)
 173 {
 174         struct rockchip_drm_private *private = dev->dev_private;
 175         struct drm_pending_vblank_event *e, *t;
 176         unsigned long flags;
 177
 178         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 179
 180         /* release events of current file */
 181         spin_lock_irqsave(&dev->event_lock, flags);
 182         list_for_each_entry_safe(e, t, &private->pageflip_event_list,
 183                         base.link) {
 184                 if (e->base.file_priv == file) {
 185                         list_del(&e->base.link);
 186                         e->base.destroy(&e->base);
 187                 }
 188         }
 189         spin_unlock_irqrestore(&dev->event_lock, flags);
 190
 191         rockchip_drm_subdrv_close(dev, file);
 192 }
 193
 194 static void rockchip_drm_postclose(struct drm_device *dev, struct drm_file *file)
 195 {
 196         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 197
 198         if (!file->driver_priv)
 199                 return;
 200
 201         kfree(file->driver_priv);
 202         file->driver_priv = NULL;
 203 }
 204
 205 static void rockchip_drm_lastclose(struct drm_device *dev)
 206 {
 207         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 208
 209         rockchip_drm_fbdev_restore_mode(dev);
 210 }
 211
 212 static const struct vm_operations_struct rockchip_drm_gem_vm_ops = {
 213         .fault = rockchip_drm_gem_fault,
 214         .open = drm_gem_vm_open,
 215         .close = drm_gem_vm_close,
 216 };
 217
 218 static struct drm_ioctl_desc rockchip_ioctls[] = {
 219         DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_CREATE, rockchip_drm_gem_create_ioctl,
 220                         DRM_UNLOCKED | DRM_AUTH),
 221         DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_MAP_OFFSET,
 222                         rockchip_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
 223                         DRM_AUTH),
 224         DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_MMAP,
 225                         rockchip_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
 226         DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_GET,
 227                         rockchip_drm_gem_get_ioctl, DRM_UNLOCKED),
 228 };
 229
 230 static const struct file_operations rockchip_drm_driver_fops = {
 231         .owner          = THIS_MODULE,
 232         .open           = drm_open,
 233         .mmap           = rockchip_drm_gem_mmap,
 234         .poll           = drm_poll,
 235         .read           = drm_read,
 236         .unlocked_ioctl = drm_ioctl,
 237 #ifdef CONFIG_COMPAT
 238         .compat_ioctl = drm_compat_ioctl,
 239 #endif
 240         .release        = drm_release,
 241 };
 242
 243 static struct drm_driver rockchip_drm_driver = {
 244         .driver_features        = DRIVER_HAVE_IRQ | DRIVER_MODESET |
 245                                         DRIVER_GEM | DRIVER_PRIME,
 246         .load                   = rockchip_drm_load,
 247         .unload                 = rockchip_drm_unload,
 248         .open                   = rockchip_drm_open,
 249         .preclose               = rockchip_drm_preclose,
 250         .lastclose              = rockchip_drm_lastclose,
 251         .postclose              = rockchip_drm_postclose,
 252         .get_vblank_counter     = drm_vblank_count,
 253         .enable_vblank          = rockchip_drm_crtc_enable_vblank,
 254         .disable_vblank         = rockchip_drm_crtc_disable_vblank,
 255         .gem_init_object        = rockchip_drm_gem_init_object,
 256         .gem_free_object        = rockchip_drm_gem_free_object,
 257         .gem_vm_ops             = &rockchip_drm_gem_vm_ops,
 258         .dumb_create            = rockchip_drm_gem_dumb_create,
 259         .dumb_map_offset        = rockchip_drm_gem_dumb_map_offset,
 260         .dumb_destroy           = rockchip_drm_gem_dumb_destroy,
 261         .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
 262         .prime_fd_to_handle     = drm_gem_prime_fd_to_handle,
 263         .gem_prime_export       = rockchip_dmabuf_prime_export,
 264         .gem_prime_import       = rockchip_dmabuf_prime_import,
 265         .ioctls                 = rockchip_ioctls,
 266         .fops                   = &rockchip_drm_driver_fops,
 267         .name   = DRIVER_NAME,
 268         .desc   = DRIVER_DESC,
 269         .date   = DRIVER_DATE,
 270         .major  = DRIVER_MAJOR,
 271         .minor  = DRIVER_MINOR,
 272 };
 273
 274 static int rockchip_drm_platform_probe(struct platform_device *pdev)
 275 {
 276         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 277
 278         pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
 279         rockchip_drm_driver.num_ioctls = DRM_ARRAY_SIZE(rockchip_ioctls);
 280
 281         return drm_platform_init(&rockchip_drm_driver, pdev);
 282 }
 283
 284 static int rockchip_drm_platform_remove(struct platform_device *pdev)
 285 {
 286         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 287
 288         drm_platform_exit(&rockchip_drm_driver, pdev);
 289
 290         return 0;
 291 }
 292
 293 static struct platform_driver rockchip_drm_platform_driver = {
 294         .probe          = rockchip_drm_platform_probe,
 295         .remove         = rockchip_drm_platform_remove,
 296         .driver         = {
 297                 .owner  = THIS_MODULE,
 298                 .name   = "rockchip-drm",
 299         },
 300 };
 301
 302 static int __init rockchip_drm_init(void)
 303 {
 304         int ret;
 305
 306         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 307
 308
 309 #ifdef CONFIG_DRM_RK_PRIMARY
 310         ret = platform_driver_register(&primary_platform_driver);
 311         if (ret < 0)
 312                 goto out_fimd;
 313         platform_device_register_simple("primary-display", -1,
 314                         NULL, 0);
 315 #endif
 316
 317         ret = platform_driver_register(&rockchip_drm_platform_driver);
 318         if (ret < 0)
 319                 goto out_drm;
 320
 321
 322         rockchip_drm_pdev = platform_device_register_simple("rockchip-drm", -1,
 323                                 NULL, 0);
 324         if (IS_ERR(rockchip_drm_pdev)) {
 325                 ret = PTR_ERR(rockchip_drm_pdev);
 326                 goto out;
 327         }
 328
 329         return 0;
 330
 331 out:
 332         platform_driver_unregister(&rockchip_drm_platform_driver);
 333 out_drm:
 334 #ifdef CONFIG_DRM_RK_PRIMARY
 335         platform_driver_unregister(&primary_platform_driver);
 336 out_fimd:
 337 #endif
 338         return ret;
 339 }
 340
 341 static void __exit rockchip_drm_exit(void)
 342 {
 343         DRM_DEBUG_DRIVER("%s\n", __FILE__);
 344
 345         platform_device_unregister(rockchip_drm_pdev);
 346
 347         platform_driver_unregister(&rockchip_drm_platform_driver);
 348 }
 349
 350 module_init(rockchip_drm_init);
 351 module_exit(rockchip_drm_exit);