summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/ast/ast_drv.c
blob: 5137f15dba19e71a220ac38efb7e1fee2ebbbd4a (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
/*
 * Copyright 2012 Red Hat Inc.
 *
 * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS 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.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 */
/*
 * Authors: Dave Airlie <airlied@redhat.com>
 */
#include <linux/module.h>
#include <linux/console.h>

#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>

#include "ast_drv.h"

int ast_modeset = -1;

MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
module_param_named(modeset, ast_modeset, int, 0400);

#define PCI_VENDOR_ASPEED 0x1a03

static struct drm_driver driver;

#define AST_VGA_DEVICE(id, info) {		\
	.class = PCI_BASE_CLASS_DISPLAY << 16,	\
	.class_mask = 0xff0000,			\
	.vendor = PCI_VENDOR_ASPEED,			\
	.device = id,				\
	.subvendor = PCI_ANY_ID,		\
	.subdevice = PCI_ANY_ID,		\
	.driver_data = (unsigned long) info }

static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
	AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
	AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
	/*	AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
	{0, 0, 0},
};

MODULE_DEVICE_TABLE(pci, pciidlist);

static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	return drm_get_pci_dev(pdev, ent, &driver);
}

static void
ast_pci_remove(struct pci_dev *pdev)
{
	struct drm_device *dev = pci_get_drvdata(pdev);

	drm_put_dev(dev);
}



static int ast_drm_freeze(struct drm_device *dev)
{
	drm_kms_helper_poll_disable(dev);

	pci_save_state(dev->pdev);

	console_lock();
	ast_fbdev_set_suspend(dev, 1);
	console_unlock();
	return 0;
}

static int ast_drm_thaw(struct drm_device *dev)
{
	int error = 0;

	ast_post_gpu(dev);

	drm_mode_config_reset(dev);
	drm_modeset_lock_all(dev);
	drm_helper_resume_force_mode(dev);
	drm_modeset_unlock_all(dev);

	console_lock();
	ast_fbdev_set_suspend(dev, 0);
	console_unlock();
	return error;
}

static int ast_drm_resume(struct drm_device *dev)
{
	int ret;

	if (pci_enable_device(dev->pdev))
		return -EIO;

	ret = ast_drm_thaw(dev);
	if (ret)
		return ret;

	drm_kms_helper_poll_enable(dev);
	return 0;
}

static int ast_pm_suspend(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct drm_device *ddev = pci_get_drvdata(pdev);
	int error;

	error = ast_drm_freeze(ddev);
	if (error)
		return error;

	pci_disable_device(pdev);
	pci_set_power_state(pdev, PCI_D3hot);
	return 0;
}
static int ast_pm_resume(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct drm_device *ddev = pci_get_drvdata(pdev);
	return ast_drm_resume(ddev);
}

static int ast_pm_freeze(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct drm_device *ddev = pci_get_drvdata(pdev);

	if (!ddev || !ddev->dev_private)
		return -ENODEV;
	return ast_drm_freeze(ddev);

}

static int ast_pm_thaw(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct drm_device *ddev = pci_get_drvdata(pdev);
	return ast_drm_thaw(ddev);
}

static int ast_pm_poweroff(struct device *dev)
{
	struct pci_dev *pdev = to_pci_dev(dev);
	struct drm_device *ddev = pci_get_drvdata(pdev);

	return ast_drm_freeze(ddev);
}

static const struct dev_pm_ops ast_pm_ops = {
	.suspend = ast_pm_suspend,
	.resume = ast_pm_resume,
	.freeze = ast_pm_freeze,
	.thaw = ast_pm_thaw,
	.poweroff = ast_pm_poweroff,
	.restore = ast_pm_resume,
};

static struct pci_driver ast_pci_driver = {
	.name = DRIVER_NAME,
	.id_table = pciidlist,
	.probe = ast_pci_probe,
	.remove = ast_pci_remove,
	.driver.pm = &ast_pm_ops,
};

static const struct file_operations ast_fops = {
	.owner = THIS_MODULE,
	.open = drm_open,
	.release = drm_release,
	.unlocked_ioctl = drm_ioctl,
	.mmap = ast_mmap,
	.poll = drm_poll,
#ifdef CONFIG_COMPAT
	.compat_ioctl = drm_compat_ioctl,
#endif
	.read = drm_read,
};

static struct drm_driver driver = {
	.driver_features = DRIVER_MODESET | DRIVER_GEM,
	.dev_priv_size = 0,

	.load = ast_driver_load,
	.unload = ast_driver_unload,

	.fops = &ast_fops,
	.name = DRIVER_NAME,
	.desc = DRIVER_DESC,
	.date = DRIVER_DATE,
	.major = DRIVER_MAJOR,
	.minor = DRIVER_MINOR,
	.patchlevel = DRIVER_PATCHLEVEL,

	.gem_free_object = ast_gem_free_object,
	.dumb_create = ast_dumb_create,
	.dumb_map_offset = ast_dumb_mmap_offset,
	.dumb_destroy = drm_gem_dumb_destroy,

};

static int __init ast_init(void)
{
#ifdef CONFIG_VGA_CONSOLE
	if (vgacon_text_force() && ast_modeset == -1)
		return -EINVAL;
#endif

	if (ast_modeset == 0)
		return -EINVAL;
	return drm_pci_init(&driver, &ast_pci_driver);
}
static void __exit ast_exit(void)
{
	drm_pci_exit(&driver, &ast_pci_driver);
}

module_init(ast_init);
module_exit(ast_exit);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights");