tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14#include <drm/drmP.h>
15#include <drm/drm_crtc_helper.h>
16
17#include <drm/exynos_drm.h>
18
19#include "exynos_drm_drv.h"
20#include "exynos_drm_crtc.h"
21#include "exynos_drm_encoder.h"
22#include "exynos_drm_fbdev.h"
23#include "exynos_drm_fb.h"
24#include "exynos_drm_gem.h"
25#include "exynos_drm_plane.h"
26#include "exynos_drm_vidi.h"
27#include "exynos_drm_dmabuf.h"
28#include "exynos_drm_g2d.h"
29#include "exynos_drm_ipp.h"
30#include "exynos_drm_iommu.h"
31
32#define DRIVER_NAME "exynos"
33#define DRIVER_DESC "Samsung SoC DRM"
34#define DRIVER_DATE "20110530"
35#define DRIVER_MAJOR 1
36#define DRIVER_MINOR 0
37
38#define VBLANK_OFF_DELAY 50000
39
40/* platform device pointer for eynos drm device. */
41static struct platform_device *exynos_drm_pdev;
42
43static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
44{
45 struct exynos_drm_private *private;
46 int ret;
47 int nr;
48
49 DRM_DEBUG_DRIVER("%s\n", __FILE__);
50
51 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
52 if (!private) {
53 DRM_ERROR("failed to allocate private\n");
54 return -ENOMEM;
55 }
56
57 INIT_LIST_HEAD(&private->pageflip_event_list);
58 dev->dev_private = (void *)private;
59
60 /*
61 * create mapping to manage iommu table and set a pointer to iommu
62 * mapping structure to iommu_mapping of private data.
63 * also this iommu_mapping can be used to check if iommu is supported
64 * or not.
65 */
66 ret = drm_create_iommu_mapping(dev);
67 if (ret < 0) {
68 DRM_ERROR("failed to create iommu mapping.\n");
69 goto err_crtc;
70 }
71
72 drm_mode_config_init(dev);
73
74 /* init kms poll for handling hpd */
75 drm_kms_helper_poll_init(dev);
76
77 exynos_drm_mode_config_init(dev);
78
79 /*
80 * EXYNOS4 is enough to have two CRTCs and each crtc would be used
81 * without dependency of hardware.
82 */
83 for (nr = 0; nr < MAX_CRTC; nr++) {
84 ret = exynos_drm_crtc_create(dev, nr);
85 if (ret)
86 goto err_release_iommu_mapping;
87 }
88
89 for (nr = 0; nr < MAX_PLANE; nr++) {
90 struct drm_plane *plane;
91 unsigned int possible_crtcs = (1 << MAX_CRTC) - 1;
92
93 plane = exynos_plane_init(dev, possible_crtcs, false);
94 if (!plane)
95 goto err_release_iommu_mapping;
96 }
97
98 ret = drm_vblank_init(dev, MAX_CRTC);
99 if (ret)
100 goto err_release_iommu_mapping;
101
102 /*
103 * probe sub drivers such as display controller and hdmi driver,
104 * that were registered at probe() of platform driver
105 * to the sub driver and create encoder and connector for them.
106 */
107 ret = exynos_drm_device_register(dev);
108 if (ret)
109 goto err_vblank;
110
111 /* setup possible_clones. */
112 exynos_drm_encoder_setup(dev);
113
114 /*
115 * create and configure fb helper and also exynos specific
116 * fbdev object.
117 */
118 ret = exynos_drm_fbdev_init(dev);
119 if (ret) {
120 DRM_ERROR("failed to initialize drm fbdev\n");
121 goto err_drm_device;
122 }
123
124 drm_vblank_offdelay = VBLANK_OFF_DELAY;
125
126 return 0;
127
128err_drm_device:
129 exynos_drm_device_unregister(dev);
130err_vblank:
131 drm_vblank_cleanup(dev);
132err_release_iommu_mapping:
133 drm_release_iommu_mapping(dev);
134err_crtc:
135 drm_mode_config_cleanup(dev);
136 kfree(private);
137
138 return ret;
139}
140
141static int exynos_drm_unload(struct drm_device *dev)
142{
143 DRM_DEBUG_DRIVER("%s\n", __FILE__);
144
145 exynos_drm_fbdev_fini(dev);
146 exynos_drm_device_unregister(dev);
147 drm_vblank_cleanup(dev);
148 drm_kms_helper_poll_fini(dev);
149 drm_mode_config_cleanup(dev);
150
151 drm_release_iommu_mapping(dev);
152 kfree(dev->dev_private);
153
154 dev->dev_private = NULL;
155
156 return 0;
157}
158
159static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
160{
161 struct drm_exynos_file_private *file_priv;
162
163 DRM_DEBUG_DRIVER("%s\n", __FILE__);
164
165 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
166 if (!file_priv)
167 return -ENOMEM;
168
169 file->driver_priv = file_priv;
170
171 return exynos_drm_subdrv_open(dev, file);
172}
173
174static void exynos_drm_preclose(struct drm_device *dev,
175 struct drm_file *file)
176{
177 struct exynos_drm_private *private = dev->dev_private;
178 struct drm_pending_vblank_event *e, *t;
179 unsigned long flags;
180
181 DRM_DEBUG_DRIVER("%s\n", __FILE__);
182
183 /* release events of current file */
184 spin_lock_irqsave(&dev->event_lock, flags);
185 list_for_each_entry_safe(e, t, &private->pageflip_event_list,
186 base.link) {
187 if (e->base.file_priv == file) {
188 list_del(&e->base.link);
189 e->base.destroy(&e->base);
190 }
191 }
192 spin_unlock_irqrestore(&dev->event_lock, flags);
193
194 exynos_drm_subdrv_close(dev, file);
195}
196
197static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
198{
199 DRM_DEBUG_DRIVER("%s\n", __FILE__);
200
201 if (!file->driver_priv)
202 return;
203
204 kfree(file->driver_priv);
205 file->driver_priv = NULL;
206}
207
208static void exynos_drm_lastclose(struct drm_device *dev)
209{
210 DRM_DEBUG_DRIVER("%s\n", __FILE__);
211
212 exynos_drm_fbdev_restore_mode(dev);
213}
214
215static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
216 .fault = exynos_drm_gem_fault,
217 .open = drm_gem_vm_open,
218 .close = drm_gem_vm_close,
219};
220
221static struct drm_ioctl_desc exynos_ioctls[] = {
222 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
223 DRM_UNLOCKED | DRM_AUTH),
224 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
225 exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
226 DRM_AUTH),
227 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
228 exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
229 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
230 exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
231 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
232 vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH),
233 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER,
234 exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH),
235 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST,
236 exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH),
237 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC,
238 exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH),
239 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY,
240 exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH),
241 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY,
242 exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH),
243 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF,
244 exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH),
245 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL,
246 exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH),
247};
248
249static const struct file_operations exynos_drm_driver_fops = {
250 .owner = THIS_MODULE,
251 .open = drm_open,
252 .mmap = exynos_drm_gem_mmap,
253 .poll = drm_poll,
254 .read = drm_read,
255 .unlocked_ioctl = drm_ioctl,
256#ifdef CONFIG_COMPAT
257 .compat_ioctl = drm_compat_ioctl,
258#endif
259 .release = drm_release,
260};
261
262static struct drm_driver exynos_drm_driver = {
263 .driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET |
264 DRIVER_GEM | DRIVER_PRIME,
265 .load = exynos_drm_load,
266 .unload = exynos_drm_unload,
267 .open = exynos_drm_open,
268 .preclose = exynos_drm_preclose,
269 .lastclose = exynos_drm_lastclose,
270 .postclose = exynos_drm_postclose,
271 .get_vblank_counter = drm_vblank_count,
272 .enable_vblank = exynos_drm_crtc_enable_vblank,
273 .disable_vblank = exynos_drm_crtc_disable_vblank,
274 .gem_init_object = exynos_drm_gem_init_object,
275 .gem_free_object = exynos_drm_gem_free_object,
276 .gem_vm_ops = &exynos_drm_gem_vm_ops,
277 .dumb_create = exynos_drm_gem_dumb_create,
278 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
279 .dumb_destroy = exynos_drm_gem_dumb_destroy,
280 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
281 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
282 .gem_prime_export = exynos_dmabuf_prime_export,
283 .gem_prime_import = exynos_dmabuf_prime_import,
284 .ioctls = exynos_ioctls,
285 .fops = &exynos_drm_driver_fops,
286 .name = DRIVER_NAME,
287 .desc = DRIVER_DESC,
288 .date = DRIVER_DATE,
289 .major = DRIVER_MAJOR,
290 .minor = DRIVER_MINOR,
291};
292
293static int exynos_drm_platform_probe(struct platform_device *pdev)
294{
295 DRM_DEBUG_DRIVER("%s\n", __FILE__);
296
297 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
298 exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
299
300 return drm_platform_init(&exynos_drm_driver, pdev);
301}
302
303static int exynos_drm_platform_remove(struct platform_device *pdev)
304{
305 DRM_DEBUG_DRIVER("%s\n", __FILE__);
306
307 drm_platform_exit(&exynos_drm_driver, pdev);
308
309 return 0;
310}
311
312static struct platform_driver exynos_drm_platform_driver = {
313 .probe = exynos_drm_platform_probe,
314 .remove = exynos_drm_platform_remove,
315 .driver = {
316 .owner = THIS_MODULE,
317 .name = "exynos-drm",
318 },
319};
320
321static int __init exynos_drm_init(void)
322{
323 int ret;
324
325 DRM_DEBUG_DRIVER("%s\n", __FILE__);
326
327#ifdef CONFIG_DRM_EXYNOS_FIMD
328 ret = platform_driver_register(&fimd_driver);
329 if (ret < 0)
330 goto out_fimd;
331#endif
332
333#ifdef CONFIG_DRM_EXYNOS_HDMI
334 ret = platform_driver_register(&hdmi_driver);
335 if (ret < 0)
336 goto out_hdmi;
337 ret = platform_driver_register(&mixer_driver);
338 if (ret < 0)
339 goto out_mixer;
340 ret = platform_driver_register(&exynos_drm_common_hdmi_driver);
341 if (ret < 0)
342 goto out_common_hdmi;
343
344 ret = exynos_platform_device_hdmi_register();
345 if (ret < 0)
346 goto out_common_hdmi_dev;
347#endif
348
349#ifdef CONFIG_DRM_EXYNOS_VIDI
350 ret = platform_driver_register(&vidi_driver);
351 if (ret < 0)
352 goto out_vidi;
353#endif
354
355#ifdef CONFIG_DRM_EXYNOS_G2D
356 ret = platform_driver_register(&g2d_driver);
357 if (ret < 0)
358 goto out_g2d;
359#endif
360
361#ifdef CONFIG_DRM_EXYNOS_FIMC
362 ret = platform_driver_register(&fimc_driver);
363 if (ret < 0)
364 goto out_fimc;
365#endif
366
367#ifdef CONFIG_DRM_EXYNOS_ROTATOR
368 ret = platform_driver_register(&rotator_driver);
369 if (ret < 0)
370 goto out_rotator;
371#endif
372
373#ifdef CONFIG_DRM_EXYNOS_GSC
374 ret = platform_driver_register(&gsc_driver);
375 if (ret < 0)
376 goto out_gsc;
377#endif
378
379#ifdef CONFIG_DRM_EXYNOS_IPP
380 ret = platform_driver_register(&ipp_driver);
381 if (ret < 0)
382 goto out_ipp;
383
384 ret = exynos_platform_device_ipp_register();
385 if (ret < 0)
386 goto out_ipp_dev;
387#endif
388
389 ret = platform_driver_register(&exynos_drm_platform_driver);
390 if (ret < 0)
391 goto out_drm;
392
393 exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1,
394 NULL, 0);
395 if (IS_ERR(exynos_drm_pdev)) {
396 ret = PTR_ERR(exynos_drm_pdev);
397 goto out;
398 }
399
400 return 0;
401
402out:
403 platform_driver_unregister(&exynos_drm_platform_driver);
404
405out_drm:
406#ifdef CONFIG_DRM_EXYNOS_IPP
407 exynos_platform_device_ipp_unregister();
408out_ipp_dev:
409 platform_driver_unregister(&ipp_driver);
410out_ipp:
411#endif
412
413#ifdef CONFIG_DRM_EXYNOS_GSC
414 platform_driver_unregister(&gsc_driver);
415out_gsc:
416#endif
417
418#ifdef CONFIG_DRM_EXYNOS_ROTATOR
419 platform_driver_unregister(&rotator_driver);
420out_rotator:
421#endif
422
423#ifdef CONFIG_DRM_EXYNOS_FIMC
424 platform_driver_unregister(&fimc_driver);
425out_fimc:
426#endif
427
428#ifdef CONFIG_DRM_EXYNOS_G2D
429 platform_driver_unregister(&g2d_driver);
430out_g2d:
431#endif
432
433#ifdef CONFIG_DRM_EXYNOS_VIDI
434 platform_driver_unregister(&vidi_driver);
435out_vidi:
436#endif
437
438#ifdef CONFIG_DRM_EXYNOS_HDMI
439 exynos_platform_device_hdmi_unregister();
440out_common_hdmi_dev:
441 platform_driver_unregister(&exynos_drm_common_hdmi_driver);
442out_common_hdmi:
443 platform_driver_unregister(&mixer_driver);
444out_mixer:
445 platform_driver_unregister(&hdmi_driver);
446out_hdmi:
447#endif
448
449#ifdef CONFIG_DRM_EXYNOS_FIMD
450 platform_driver_unregister(&fimd_driver);
451out_fimd:
452#endif
453 return ret;
454}
455
456static void __exit exynos_drm_exit(void)
457{
458 DRM_DEBUG_DRIVER("%s\n", __FILE__);
459
460 platform_device_unregister(exynos_drm_pdev);
461
462 platform_driver_unregister(&exynos_drm_platform_driver);
463
464#ifdef CONFIG_DRM_EXYNOS_IPP
465 exynos_platform_device_ipp_unregister();
466 platform_driver_unregister(&ipp_driver);
467#endif
468
469#ifdef CONFIG_DRM_EXYNOS_GSC
470 platform_driver_unregister(&gsc_driver);
471#endif
472
473#ifdef CONFIG_DRM_EXYNOS_ROTATOR
474 platform_driver_unregister(&rotator_driver);
475#endif
476
477#ifdef CONFIG_DRM_EXYNOS_FIMC
478 platform_driver_unregister(&fimc_driver);
479#endif
480
481#ifdef CONFIG_DRM_EXYNOS_G2D
482 platform_driver_unregister(&g2d_driver);
483#endif
484
485#ifdef CONFIG_DRM_EXYNOS_HDMI
486 exynos_platform_device_hdmi_unregister();
487 platform_driver_unregister(&exynos_drm_common_hdmi_driver);
488 platform_driver_unregister(&mixer_driver);
489 platform_driver_unregister(&hdmi_driver);
490#endif
491
492#ifdef CONFIG_DRM_EXYNOS_VIDI
493 platform_driver_unregister(&vidi_driver);
494#endif
495
496#ifdef CONFIG_DRM_EXYNOS_FIMD
497 platform_driver_unregister(&fimd_driver);
498#endif
499}
500
501module_init(exynos_drm_init);
502module_exit(exynos_drm_exit);
503
504MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
505MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
506MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
507MODULE_DESCRIPTION("Samsung SoC DRM Driver");
508MODULE_LICENSE("GPL");