2 * Copyright 2012 Red Hat Inc.
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:
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.
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
29 #include <linux/console.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
33 #include <drm/drm_crtc_helper.h>
34 #include <drm/drm_drv.h>
35 #include <drm/drm_gem_vram_helper.h>
36 #include <drm/drm_pci.h>
37 #include <drm/drm_probe_helper.h>
38 #include <drm/drm_vram_mm_helper.h>
44 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
45 module_param_named(modeset, ast_modeset, int, 0400);
47 #define PCI_VENDOR_ASPEED 0x1a03
49 static struct drm_driver driver;
51 #define AST_VGA_DEVICE(id, info) { \
52 .class = PCI_BASE_CLASS_DISPLAY << 16, \
53 .class_mask = 0xff0000, \
54 .vendor = PCI_VENDOR_ASPEED, \
56 .subvendor = PCI_ANY_ID, \
57 .subdevice = PCI_ANY_ID, \
58 .driver_data = (unsigned long) info }
60 static const struct pci_device_id pciidlist[] = {
61 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
62 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
63 /* AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
67 MODULE_DEVICE_TABLE(pci, pciidlist);
69 static void ast_kick_out_firmware_fb(struct pci_dev *pdev)
71 struct apertures_struct *ap;
74 ap = alloc_apertures(1);
78 ap->ranges[0].base = pci_resource_start(pdev, 0);
79 ap->ranges[0].size = pci_resource_len(pdev, 0);
82 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
84 drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary);
88 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
90 ast_kick_out_firmware_fb(pdev);
92 return drm_get_pci_dev(pdev, ent, &driver);
96 ast_pci_remove(struct pci_dev *pdev)
98 struct drm_device *dev = pci_get_drvdata(pdev);
105 static int ast_drm_freeze(struct drm_device *dev)
107 drm_kms_helper_poll_disable(dev);
108 pci_save_state(dev->pdev);
109 drm_fb_helper_set_suspend_unlocked(dev->fb_helper, true);
114 static int ast_drm_thaw(struct drm_device *dev)
118 drm_mode_config_reset(dev);
119 drm_helper_resume_force_mode(dev);
120 drm_fb_helper_set_suspend_unlocked(dev->fb_helper, false);
125 static int ast_drm_resume(struct drm_device *dev)
129 if (pci_enable_device(dev->pdev))
132 ret = ast_drm_thaw(dev);
136 drm_kms_helper_poll_enable(dev);
140 static int ast_pm_suspend(struct device *dev)
142 struct pci_dev *pdev = to_pci_dev(dev);
143 struct drm_device *ddev = pci_get_drvdata(pdev);
146 error = ast_drm_freeze(ddev);
150 pci_disable_device(pdev);
151 pci_set_power_state(pdev, PCI_D3hot);
154 static int ast_pm_resume(struct device *dev)
156 struct pci_dev *pdev = to_pci_dev(dev);
157 struct drm_device *ddev = pci_get_drvdata(pdev);
158 return ast_drm_resume(ddev);
161 static int ast_pm_freeze(struct device *dev)
163 struct pci_dev *pdev = to_pci_dev(dev);
164 struct drm_device *ddev = pci_get_drvdata(pdev);
166 if (!ddev || !ddev->dev_private)
168 return ast_drm_freeze(ddev);
172 static int ast_pm_thaw(struct device *dev)
174 struct pci_dev *pdev = to_pci_dev(dev);
175 struct drm_device *ddev = pci_get_drvdata(pdev);
176 return ast_drm_thaw(ddev);
179 static int ast_pm_poweroff(struct device *dev)
181 struct pci_dev *pdev = to_pci_dev(dev);
182 struct drm_device *ddev = pci_get_drvdata(pdev);
184 return ast_drm_freeze(ddev);
187 static const struct dev_pm_ops ast_pm_ops = {
188 .suspend = ast_pm_suspend,
189 .resume = ast_pm_resume,
190 .freeze = ast_pm_freeze,
192 .poweroff = ast_pm_poweroff,
193 .restore = ast_pm_resume,
196 static struct pci_driver ast_pci_driver = {
198 .id_table = pciidlist,
199 .probe = ast_pci_probe,
200 .remove = ast_pci_remove,
201 .driver.pm = &ast_pm_ops,
204 static const struct file_operations ast_fops = {
205 .owner = THIS_MODULE,
206 DRM_VRAM_MM_FILE_OPERATIONS
209 static struct drm_driver driver = {
210 .driver_features = DRIVER_MODESET | DRIVER_GEM,
212 .load = ast_driver_load,
213 .unload = ast_driver_unload,
219 .major = DRIVER_MAJOR,
220 .minor = DRIVER_MINOR,
221 .patchlevel = DRIVER_PATCHLEVEL,
226 static int __init ast_init(void)
228 if (vgacon_text_force() && ast_modeset == -1)
231 if (ast_modeset == 0)
233 return pci_register_driver(&ast_pci_driver);
235 static void __exit ast_exit(void)
237 pci_unregister_driver(&ast_pci_driver);
240 module_init(ast_init);
241 module_exit(ast_exit);
243 MODULE_AUTHOR(DRIVER_AUTHOR);
244 MODULE_DESCRIPTION(DRIVER_DESC);
245 MODULE_LICENSE("GPL and additional rights");