summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/exynos/exynos_drm_drv.c
blob: 53e2216de61dd5c42c35eaa7f0c23ca1e991a621 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
/*
 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
 * Authors:
 *	Inki Dae <inki.dae@samsung.com>
 *	Joonyoung Shim <jy0922.shim@samsung.com>
 *	Seung-Woo Kim <sw0312.kim@samsung.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "drmP.h"
#include "drm.h"
#include "drm_crtc_helper.h"

#include <drm/exynos_drm.h>

#include "exynos_drm_drv.h"
#include "exynos_drm_crtc.h"
#include "exynos_drm_fbdev.h"
#include "exynos_drm_fb.h"
#include "exynos_drm_gem.h"

#define DRIVER_NAME	"exynos-drm"
#define DRIVER_DESC	"Samsung SoC DRM"
#define DRIVER_DATE	"20110530"
#define DRIVER_MAJOR	1
#define DRIVER_MINOR	0

static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
{
	struct exynos_drm_private *private;
	int ret;
	int nr;

	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
	if (!private) {
		DRM_ERROR("failed to allocate private\n");
		return -ENOMEM;
	}

	INIT_LIST_HEAD(&private->pageflip_event_list);
	dev->dev_private = (void *)private;

	drm_mode_config_init(dev);

	/* init kms poll for handling hpd */
	drm_kms_helper_poll_init(dev);

	exynos_drm_mode_config_init(dev);

	/*
	 * EXYNOS4 is enough to have two CRTCs and each crtc would be used
	 * without dependency of hardware.
	 */
	for (nr = 0; nr < MAX_CRTC; nr++) {
		ret = exynos_drm_crtc_create(dev, nr);
		if (ret)
			goto err_crtc;
	}

	ret = drm_vblank_init(dev, MAX_CRTC);
	if (ret)
		goto err_crtc;

	/*
	 * probe sub drivers such as display controller and hdmi driver,
	 * that were registered at probe() of platform driver
	 * to the sub driver and create encoder and connector for them.
	 */
	ret = exynos_drm_device_register(dev);
	if (ret)
		goto err_vblank;

	/*
	 * create and configure fb helper and also exynos specific
	 * fbdev object.
	 */
	ret = exynos_drm_fbdev_init(dev);
	if (ret) {
		DRM_ERROR("failed to initialize drm fbdev\n");
		goto err_drm_device;
	}

	return 0;

err_drm_device:
	exynos_drm_device_unregister(dev);
err_vblank:
	drm_vblank_cleanup(dev);
err_crtc:
	drm_mode_config_cleanup(dev);
	kfree(private);

	return ret;
}

static int exynos_drm_unload(struct drm_device *dev)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	exynos_drm_fbdev_fini(dev);
	exynos_drm_device_unregister(dev);
	drm_vblank_cleanup(dev);
	drm_kms_helper_poll_fini(dev);
	drm_mode_config_cleanup(dev);
	kfree(dev->dev_private);

	dev->dev_private = NULL;

	return 0;
}

static void exynos_drm_preclose(struct drm_device *dev,
					struct drm_file *file_priv)
{
	struct exynos_drm_private *dev_priv = dev->dev_private;

	/*
	 * drm framework frees all events at release time,
	 * so private event list should be cleared.
	 */
	if (!list_empty(&dev_priv->pageflip_event_list))
		INIT_LIST_HEAD(&dev_priv->pageflip_event_list);
}

static void exynos_drm_lastclose(struct drm_device *dev)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	exynos_drm_fbdev_restore_mode(dev);
}

static struct vm_operations_struct exynos_drm_gem_vm_ops = {
	.fault = exynos_drm_gem_fault,
	.open = drm_gem_vm_open,
	.close = drm_gem_vm_close,
};

static struct drm_ioctl_desc exynos_ioctls[] = {
	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
			DRM_UNLOCKED | DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
			exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
			DRM_AUTH),
	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
			exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
};

static struct drm_driver exynos_drm_driver = {
	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
				  DRIVER_MODESET | DRIVER_GEM,
	.load			= exynos_drm_load,
	.unload			= exynos_drm_unload,
	.preclose		= exynos_drm_preclose,
	.lastclose		= exynos_drm_lastclose,
	.get_vblank_counter	= drm_vblank_count,
	.enable_vblank		= exynos_drm_crtc_enable_vblank,
	.disable_vblank		= exynos_drm_crtc_disable_vblank,
	.gem_init_object	= exynos_drm_gem_init_object,
	.gem_free_object	= exynos_drm_gem_free_object,
	.gem_vm_ops		= &exynos_drm_gem_vm_ops,
	.dumb_create		= exynos_drm_gem_dumb_create,
	.dumb_map_offset	= exynos_drm_gem_dumb_map_offset,
	.dumb_destroy		= exynos_drm_gem_dumb_destroy,
	.ioctls			= exynos_ioctls,
	.fops = {
		.owner		= THIS_MODULE,
		.open		= drm_open,
		.mmap		= exynos_drm_gem_mmap,
		.poll		= drm_poll,
		.read		= drm_read,
		.unlocked_ioctl	= drm_ioctl,
		.release	= drm_release,
	},
	.name	= DRIVER_NAME,
	.desc	= DRIVER_DESC,
	.date	= DRIVER_DATE,
	.major	= DRIVER_MAJOR,
	.minor	= DRIVER_MINOR,
};

static int exynos_drm_platform_probe(struct platform_device *pdev)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);

	return drm_platform_init(&exynos_drm_driver, pdev);
}

static int exynos_drm_platform_remove(struct platform_device *pdev)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	drm_platform_exit(&exynos_drm_driver, pdev);

	return 0;
}

static struct platform_driver exynos_drm_platform_driver = {
	.probe		= exynos_drm_platform_probe,
	.remove		= __devexit_p(exynos_drm_platform_remove),
	.driver		= {
		.owner	= THIS_MODULE,
		.name	= DRIVER_NAME,
	},
};

static int __init exynos_drm_init(void)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	return platform_driver_register(&exynos_drm_platform_driver);
}

static void __exit exynos_drm_exit(void)
{
	DRM_DEBUG_DRIVER("%s\n", __FILE__);

	platform_driver_unregister(&exynos_drm_platform_driver);
}

module_init(exynos_drm_init);
module_exit(exynos_drm_exit);

MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
MODULE_DESCRIPTION("Samsung SoC DRM Driver");
MODULE_LICENSE("GPL");