tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <linux/module.h>
29#include <linux/console.h>
30
31#include <drm/drmP.h>
32#include <drm/drm_crtc_helper.h>
33#include <drm/drm_probe_helper.h>
34
35#include "ast_drv.h"
36
37int ast_modeset = -1;
38
39MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
40module_param_named(modeset, ast_modeset, int, 0400);
41
42#define PCI_VENDOR_ASPEED 0x1a03
43
44static struct drm_driver driver;
45
46#define AST_VGA_DEVICE(id, info) { \
47 .class = PCI_BASE_CLASS_DISPLAY << 16, \
48 .class_mask = 0xff0000, \
49 .vendor = PCI_VENDOR_ASPEED, \
50 .device = id, \
51 .subvendor = PCI_ANY_ID, \
52 .subdevice = PCI_ANY_ID, \
53 .driver_data = (unsigned long) info }
54
55static const struct pci_device_id pciidlist[] = {
56 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
57 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
58 /* AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
59 {0, 0, 0},
60};
61
62MODULE_DEVICE_TABLE(pci, pciidlist);
63
64static void ast_kick_out_firmware_fb(struct pci_dev *pdev)
65{
66 struct apertures_struct *ap;
67 bool primary = false;
68
69 ap = alloc_apertures(1);
70 if (!ap)
71 return;
72
73 ap->ranges[0].base = pci_resource_start(pdev, 0);
74 ap->ranges[0].size = pci_resource_len(pdev, 0);
75
76#ifdef CONFIG_X86
77 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
78#endif
79 drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary);
80 kfree(ap);
81}
82
83static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
84{
85 ast_kick_out_firmware_fb(pdev);
86
87 return drm_get_pci_dev(pdev, ent, &driver);
88}
89
90static void
91ast_pci_remove(struct pci_dev *pdev)
92{
93 struct drm_device *dev = pci_get_drvdata(pdev);
94
95 drm_put_dev(dev);
96}
97
98
99
100static int ast_drm_freeze(struct drm_device *dev)
101{
102 drm_kms_helper_poll_disable(dev);
103
104 pci_save_state(dev->pdev);
105
106 console_lock();
107 ast_fbdev_set_suspend(dev, 1);
108 console_unlock();
109 return 0;
110}
111
112static int ast_drm_thaw(struct drm_device *dev)
113{
114 int error = 0;
115
116 ast_post_gpu(dev);
117
118 drm_mode_config_reset(dev);
119 drm_helper_resume_force_mode(dev);
120
121 console_lock();
122 ast_fbdev_set_suspend(dev, 0);
123 console_unlock();
124 return error;
125}
126
127static int ast_drm_resume(struct drm_device *dev)
128{
129 int ret;
130
131 if (pci_enable_device(dev->pdev))
132 return -EIO;
133
134 ret = ast_drm_thaw(dev);
135 if (ret)
136 return ret;
137
138 drm_kms_helper_poll_enable(dev);
139 return 0;
140}
141
142static int ast_pm_suspend(struct device *dev)
143{
144 struct pci_dev *pdev = to_pci_dev(dev);
145 struct drm_device *ddev = pci_get_drvdata(pdev);
146 int error;
147
148 error = ast_drm_freeze(ddev);
149 if (error)
150 return error;
151
152 pci_disable_device(pdev);
153 pci_set_power_state(pdev, PCI_D3hot);
154 return 0;
155}
156static int ast_pm_resume(struct device *dev)
157{
158 struct pci_dev *pdev = to_pci_dev(dev);
159 struct drm_device *ddev = pci_get_drvdata(pdev);
160 return ast_drm_resume(ddev);
161}
162
163static int ast_pm_freeze(struct device *dev)
164{
165 struct pci_dev *pdev = to_pci_dev(dev);
166 struct drm_device *ddev = pci_get_drvdata(pdev);
167
168 if (!ddev || !ddev->dev_private)
169 return -ENODEV;
170 return ast_drm_freeze(ddev);
171
172}
173
174static int ast_pm_thaw(struct device *dev)
175{
176 struct pci_dev *pdev = to_pci_dev(dev);
177 struct drm_device *ddev = pci_get_drvdata(pdev);
178 return ast_drm_thaw(ddev);
179}
180
181static int ast_pm_poweroff(struct device *dev)
182{
183 struct pci_dev *pdev = to_pci_dev(dev);
184 struct drm_device *ddev = pci_get_drvdata(pdev);
185
186 return ast_drm_freeze(ddev);
187}
188
189static const struct dev_pm_ops ast_pm_ops = {
190 .suspend = ast_pm_suspend,
191 .resume = ast_pm_resume,
192 .freeze = ast_pm_freeze,
193 .thaw = ast_pm_thaw,
194 .poweroff = ast_pm_poweroff,
195 .restore = ast_pm_resume,
196};
197
198static struct pci_driver ast_pci_driver = {
199 .name = DRIVER_NAME,
200 .id_table = pciidlist,
201 .probe = ast_pci_probe,
202 .remove = ast_pci_remove,
203 .driver.pm = &ast_pm_ops,
204};
205
206static const struct file_operations ast_fops = {
207 .owner = THIS_MODULE,
208 .open = drm_open,
209 .release = drm_release,
210 .unlocked_ioctl = drm_ioctl,
211 .mmap = ast_mmap,
212 .poll = drm_poll,
213 .compat_ioctl = drm_compat_ioctl,
214 .read = drm_read,
215};
216
217static struct drm_driver driver = {
218 .driver_features = DRIVER_MODESET | DRIVER_GEM,
219
220 .load = ast_driver_load,
221 .unload = ast_driver_unload,
222
223 .fops = &ast_fops,
224 .name = DRIVER_NAME,
225 .desc = DRIVER_DESC,
226 .date = DRIVER_DATE,
227 .major = DRIVER_MAJOR,
228 .minor = DRIVER_MINOR,
229 .patchlevel = DRIVER_PATCHLEVEL,
230
231 .gem_free_object_unlocked = ast_gem_free_object,
232 .dumb_create = ast_dumb_create,
233 .dumb_map_offset = ast_dumb_mmap_offset,
234
235};
236
237static int __init ast_init(void)
238{
239 if (vgacon_text_force() && ast_modeset == -1)
240 return -EINVAL;
241
242 if (ast_modeset == 0)
243 return -EINVAL;
244 return pci_register_driver(&ast_pci_driver);
245}
246static void __exit ast_exit(void)
247{
248 pci_unregister_driver(&ast_pci_driver);
249}
250
251module_init(ast_init);
252module_exit(ast_exit);
253
254MODULE_AUTHOR(DRIVER_AUTHOR);
255MODULE_DESCRIPTION(DRIVER_DESC);
256MODULE_LICENSE("GPL and additional rights");
257