1 /*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
18 * USE OR OTHER DEALINGS IN THE SOFTWARE.
19 *
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
22 * of the Software.
23 *
24 */
25 /*
26 * Authors: Dave Airlie <airlied@redhat.com>
27 */
28
29 #include <linux/console.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32
33 #include <drm/drm_aperture.h>
34 #include <drm/drm_atomic_helper.h>
35 #include <drm/drm_crtc_helper.h>
36 #include <drm/drm_drv.h>
37 #include <drm/drm_gem_vram_helper.h>
38 #include <drm/drm_probe_helper.h>
39
40 #include "ast_drv.h"
41
42 int ast_modeset = -1;
43
44 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
45 module_param_named(modeset, ast_modeset, int, 0400);
46
47 /*
48 * DRM driver
49 */
50
51 DEFINE_DRM_GEM_FOPS(ast_fops);
52
53 static const struct drm_driver ast_driver = {
54 .driver_features = DRIVER_ATOMIC |
55 DRIVER_GEM |
56 DRIVER_MODESET,
57
58 .fops = &ast_fops,
59 .name = DRIVER_NAME,
60 .desc = DRIVER_DESC,
61 .date = DRIVER_DATE,
62 .major = DRIVER_MAJOR,
63 .minor = DRIVER_MINOR,
64 .patchlevel = DRIVER_PATCHLEVEL,
65
66 DRM_GEM_VRAM_DRIVER
67 };
68
69 /*
70 * PCI driver
71 */
72
73 #define PCI_VENDOR_ASPEED 0x1a03
74
75 #define AST_VGA_DEVICE(id, info) { \
76 .class = PCI_BASE_CLASS_DISPLAY << 16, \
77 .class_mask = 0xff0000, \
78 .vendor = PCI_VENDOR_ASPEED, \
79 .device = id, \
80 .subvendor = PCI_ANY_ID, \
81 .subdevice = PCI_ANY_ID, \
82 .driver_data = (unsigned long) info }
83
84 static const struct pci_device_id ast_pciidlist[] = {
85 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
86 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
87 {0, 0, 0},
88 };
89
90 MODULE_DEVICE_TABLE(pci, ast_pciidlist);
91
ast_remove_conflicting_framebuffers(struct pci_dev * pdev)92 static int ast_remove_conflicting_framebuffers(struct pci_dev *pdev)
93 {
94 bool primary = false;
95 resource_size_t base, size;
96
97 base = pci_resource_start(pdev, 0);
98 size = pci_resource_len(pdev, 0);
99 #ifdef CONFIG_X86
100 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
101 #endif
102
103 return drm_aperture_remove_conflicting_framebuffers(base, size, primary, &ast_driver);
104 }
105
ast_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)106 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
107 {
108 struct ast_private *ast;
109 struct drm_device *dev;
110 int ret;
111
112 ret = ast_remove_conflicting_framebuffers(pdev);
113 if (ret)
114 return ret;
115
116 ret = pcim_enable_device(pdev);
117 if (ret)
118 return ret;
119
120 ast = ast_device_create(&ast_driver, pdev, ent->driver_data);
121 if (IS_ERR(ast))
122 return PTR_ERR(ast);
123 dev = &ast->base;
124
125 ret = drm_dev_register(dev, ent->driver_data);
126 if (ret)
127 return ret;
128
129 drm_fbdev_generic_setup(dev, 32);
130
131 return 0;
132 }
133
ast_pci_remove(struct pci_dev * pdev)134 static void ast_pci_remove(struct pci_dev *pdev)
135 {
136 struct drm_device *dev = pci_get_drvdata(pdev);
137
138 drm_dev_unregister(dev);
139 drm_atomic_helper_shutdown(dev);
140 }
141
ast_drm_freeze(struct drm_device * dev)142 static int ast_drm_freeze(struct drm_device *dev)
143 {
144 int error;
145
146 error = drm_mode_config_helper_suspend(dev);
147 if (error)
148 return error;
149 pci_save_state(to_pci_dev(dev->dev));
150 return 0;
151 }
152
ast_drm_thaw(struct drm_device * dev)153 static int ast_drm_thaw(struct drm_device *dev)
154 {
155 ast_post_gpu(dev);
156
157 return drm_mode_config_helper_resume(dev);
158 }
159
ast_drm_resume(struct drm_device * dev)160 static int ast_drm_resume(struct drm_device *dev)
161 {
162 int ret;
163
164 if (pci_enable_device(to_pci_dev(dev->dev)))
165 return -EIO;
166
167 ret = ast_drm_thaw(dev);
168 if (ret)
169 return ret;
170 return 0;
171 }
172
ast_pm_suspend(struct device * dev)173 static int ast_pm_suspend(struct device *dev)
174 {
175 struct pci_dev *pdev = to_pci_dev(dev);
176 struct drm_device *ddev = pci_get_drvdata(pdev);
177 int error;
178
179 error = ast_drm_freeze(ddev);
180 if (error)
181 return error;
182
183 pci_disable_device(pdev);
184 pci_set_power_state(pdev, PCI_D3hot);
185 return 0;
186 }
187
ast_pm_resume(struct device * dev)188 static int ast_pm_resume(struct device *dev)
189 {
190 struct pci_dev *pdev = to_pci_dev(dev);
191 struct drm_device *ddev = pci_get_drvdata(pdev);
192 return ast_drm_resume(ddev);
193 }
194
ast_pm_freeze(struct device * dev)195 static int ast_pm_freeze(struct device *dev)
196 {
197 struct pci_dev *pdev = to_pci_dev(dev);
198 struct drm_device *ddev = pci_get_drvdata(pdev);
199 return ast_drm_freeze(ddev);
200 }
201
ast_pm_thaw(struct device * dev)202 static int ast_pm_thaw(struct device *dev)
203 {
204 struct pci_dev *pdev = to_pci_dev(dev);
205 struct drm_device *ddev = pci_get_drvdata(pdev);
206 return ast_drm_thaw(ddev);
207 }
208
ast_pm_poweroff(struct device * dev)209 static int ast_pm_poweroff(struct device *dev)
210 {
211 struct pci_dev *pdev = to_pci_dev(dev);
212 struct drm_device *ddev = pci_get_drvdata(pdev);
213
214 return ast_drm_freeze(ddev);
215 }
216
217 static const struct dev_pm_ops ast_pm_ops = {
218 .suspend = ast_pm_suspend,
219 .resume = ast_pm_resume,
220 .freeze = ast_pm_freeze,
221 .thaw = ast_pm_thaw,
222 .poweroff = ast_pm_poweroff,
223 .restore = ast_pm_resume,
224 };
225
226 static struct pci_driver ast_pci_driver = {
227 .name = DRIVER_NAME,
228 .id_table = ast_pciidlist,
229 .probe = ast_pci_probe,
230 .remove = ast_pci_remove,
231 .driver.pm = &ast_pm_ops,
232 };
233
ast_init(void)234 static int __init ast_init(void)
235 {
236 if (vgacon_text_force() && ast_modeset == -1)
237 return -EINVAL;
238
239 if (ast_modeset == 0)
240 return -EINVAL;
241 return pci_register_driver(&ast_pci_driver);
242 }
ast_exit(void)243 static void __exit ast_exit(void)
244 {
245 pci_unregister_driver(&ast_pci_driver);
246 }
247
248 module_init(ast_init);
249 module_exit(ast_exit);
250
251 MODULE_AUTHOR(DRIVER_AUTHOR);
252 MODULE_DESCRIPTION(DRIVER_DESC);
253 MODULE_LICENSE("GPL and additional rights");
254