exynos_drm_drv.c revision 6f811502a473a32a9b892fb35d77b8f91dc7484c 
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
49static 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
116err_drm_device:
117	exynos_drm_device_unregister(dev);
118err_vblank:
119	drm_vblank_cleanup(dev);
120err_crtc:
121	drm_mode_config_cleanup(dev);
122	kfree(private);
123
124	return ret;
125}
126
127static 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
143static void exynos_drm_preclose(struct drm_device *dev,
144					struct drm_file *file)
145{
146	DRM_DEBUG_DRIVER("%s\n", __FILE__);
147
148}
149
150static 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
157static 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
163static 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
175static 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
185static 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
210static 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
219static 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
228static 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
237static 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
244static 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
251module_init(exynos_drm_init);
252module_exit(exynos_drm_exit);
253
254MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
255MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
256MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
257MODULE_DESCRIPTION("Samsung SoC DRM Driver");
258MODULE_LICENSE("GPL");
259