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_fb_helper.h>
36 #include <drm/drm_gem_vram_helper.h>
37 #include <drm/drm_probe_helper.h>
43 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
44 module_param_named(modeset, ast_modeset, int, 0400);
46 #define PCI_VENDOR_ASPEED 0x1a03
48 static struct drm_driver driver;
50 #define AST_VGA_DEVICE(id, info) { \
51 .class = PCI_BASE_CLASS_DISPLAY << 16, \
52 .class_mask = 0xff0000, \
53 .vendor = PCI_VENDOR_ASPEED, \
55 .subvendor = PCI_ANY_ID, \
56 .subdevice = PCI_ANY_ID, \
57 .driver_data = (unsigned long) info }
59 static const struct pci_device_id pciidlist[] = {
60 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
61 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
65 MODULE_DEVICE_TABLE(pci, pciidlist);
67 static void ast_kick_out_firmware_fb(struct pci_dev *pdev)
69 struct apertures_struct *ap;
72 ap = alloc_apertures(1);
76 ap->ranges[0].base = pci_resource_start(pdev, 0);
77 ap->ranges[0].size = pci_resource_len(pdev, 0);
80 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
82 drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary);
86 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
88 struct drm_device *dev;
91 ast_kick_out_firmware_fb(pdev);
93 ret = pcim_enable_device(pdev);
97 dev = drm_dev_alloc(&driver, &pdev->dev);
102 pci_set_drvdata(pdev, dev);
104 ret = ast_driver_load(dev, ent->driver_data);
106 goto err_drm_dev_put;
108 ret = drm_dev_register(dev, ent->driver_data);
110 goto err_ast_driver_unload;
112 drm_fbdev_generic_setup(dev, 32);
116 err_ast_driver_unload:
117 ast_driver_unload(dev);
125 ast_pci_remove(struct pci_dev *pdev)
127 struct drm_device *dev = pci_get_drvdata(pdev);
129 drm_dev_unregister(dev);
130 ast_driver_unload(dev);
134 static int ast_drm_freeze(struct drm_device *dev)
138 error = drm_mode_config_helper_suspend(dev);
141 pci_save_state(dev->pdev);
145 static int ast_drm_thaw(struct drm_device *dev)
149 return drm_mode_config_helper_resume(dev);
152 static int ast_drm_resume(struct drm_device *dev)
156 if (pci_enable_device(dev->pdev))
159 ret = ast_drm_thaw(dev);
165 static int ast_pm_suspend(struct device *dev)
167 struct pci_dev *pdev = to_pci_dev(dev);
168 struct drm_device *ddev = pci_get_drvdata(pdev);
171 error = ast_drm_freeze(ddev);
175 pci_disable_device(pdev);
176 pci_set_power_state(pdev, PCI_D3hot);
180 static int ast_pm_resume(struct device *dev)
182 struct pci_dev *pdev = to_pci_dev(dev);
183 struct drm_device *ddev = pci_get_drvdata(pdev);
184 return ast_drm_resume(ddev);
187 static int ast_pm_freeze(struct device *dev)
189 struct pci_dev *pdev = to_pci_dev(dev);
190 struct drm_device *ddev = pci_get_drvdata(pdev);
191 return ast_drm_freeze(ddev);
194 static int ast_pm_thaw(struct device *dev)
196 struct pci_dev *pdev = to_pci_dev(dev);
197 struct drm_device *ddev = pci_get_drvdata(pdev);
198 return ast_drm_thaw(ddev);
201 static int ast_pm_poweroff(struct device *dev)
203 struct pci_dev *pdev = to_pci_dev(dev);
204 struct drm_device *ddev = pci_get_drvdata(pdev);
206 return ast_drm_freeze(ddev);
209 static const struct dev_pm_ops ast_pm_ops = {
210 .suspend = ast_pm_suspend,
211 .resume = ast_pm_resume,
212 .freeze = ast_pm_freeze,
214 .poweroff = ast_pm_poweroff,
215 .restore = ast_pm_resume,
218 static struct pci_driver ast_pci_driver = {
220 .id_table = pciidlist,
221 .probe = ast_pci_probe,
222 .remove = ast_pci_remove,
223 .driver.pm = &ast_pm_ops,
226 DEFINE_DRM_GEM_FOPS(ast_fops);
228 static struct drm_driver driver = {
229 .driver_features = DRIVER_ATOMIC |
237 .major = DRIVER_MAJOR,
238 .minor = DRIVER_MINOR,
239 .patchlevel = DRIVER_PATCHLEVEL,
244 static int __init ast_init(void)
246 if (vgacon_text_force() && ast_modeset == -1)
249 if (ast_modeset == 0)
251 return pci_register_driver(&ast_pci_driver);
253 static void __exit ast_exit(void)
255 pci_unregister_driver(&ast_pci_driver);
258 module_init(ast_init);
259 module_exit(ast_exit);
261 MODULE_AUTHOR(DRIVER_AUTHOR);
262 MODULE_DESCRIPTION(DRIVER_DESC);
263 MODULE_LICENSE("GPL and additional rights");