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_probe_helper.h>
42 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
43 module_param_named(modeset, ast_modeset, int, 0400);
45 #define PCI_VENDOR_ASPEED 0x1a03
47 static struct drm_driver driver;
49 #define AST_VGA_DEVICE(id, info) { \
50 .class = PCI_BASE_CLASS_DISPLAY << 16, \
51 .class_mask = 0xff0000, \
52 .vendor = PCI_VENDOR_ASPEED, \
54 .subvendor = PCI_ANY_ID, \
55 .subdevice = PCI_ANY_ID, \
56 .driver_data = (unsigned long) info }
58 static const struct pci_device_id pciidlist[] = {
59 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
60 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
61 /* AST_VGA_DEVICE(PCI_CHIP_AST1180, NULL), - don't bind to 1180 for now */
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 = pci_enable_device(pdev);
97 dev = drm_dev_alloc(&driver, &pdev->dev);
100 goto err_pci_disable_device;
104 pci_set_drvdata(pdev, dev);
106 ret = ast_driver_load(dev, ent->driver_data);
108 goto err_drm_dev_put;
110 ret = drm_dev_register(dev, ent->driver_data);
112 goto err_ast_driver_unload;
116 err_ast_driver_unload:
117 ast_driver_unload(dev);
120 err_pci_disable_device:
121 pci_disable_device(pdev);
127 ast_pci_remove(struct pci_dev *pdev)
129 struct drm_device *dev = pci_get_drvdata(pdev);
131 drm_dev_unregister(dev);
132 ast_driver_unload(dev);
136 static int ast_drm_freeze(struct drm_device *dev)
140 error = drm_mode_config_helper_suspend(dev);
143 pci_save_state(dev->pdev);
147 static int ast_drm_thaw(struct drm_device *dev)
151 return drm_mode_config_helper_resume(dev);
154 static int ast_drm_resume(struct drm_device *dev)
158 if (pci_enable_device(dev->pdev))
161 ret = ast_drm_thaw(dev);
167 static int ast_pm_suspend(struct device *dev)
169 struct pci_dev *pdev = to_pci_dev(dev);
170 struct drm_device *ddev = pci_get_drvdata(pdev);
173 error = ast_drm_freeze(ddev);
177 pci_disable_device(pdev);
178 pci_set_power_state(pdev, PCI_D3hot);
182 static int ast_pm_resume(struct device *dev)
184 struct pci_dev *pdev = to_pci_dev(dev);
185 struct drm_device *ddev = pci_get_drvdata(pdev);
186 return ast_drm_resume(ddev);
189 static int ast_pm_freeze(struct device *dev)
191 struct pci_dev *pdev = to_pci_dev(dev);
192 struct drm_device *ddev = pci_get_drvdata(pdev);
194 if (!ddev || !ddev->dev_private)
196 return ast_drm_freeze(ddev);
199 static int ast_pm_thaw(struct device *dev)
201 struct pci_dev *pdev = to_pci_dev(dev);
202 struct drm_device *ddev = pci_get_drvdata(pdev);
203 return ast_drm_thaw(ddev);
206 static int ast_pm_poweroff(struct device *dev)
208 struct pci_dev *pdev = to_pci_dev(dev);
209 struct drm_device *ddev = pci_get_drvdata(pdev);
211 return ast_drm_freeze(ddev);
214 static const struct dev_pm_ops ast_pm_ops = {
215 .suspend = ast_pm_suspend,
216 .resume = ast_pm_resume,
217 .freeze = ast_pm_freeze,
219 .poweroff = ast_pm_poweroff,
220 .restore = ast_pm_resume,
223 static struct pci_driver ast_pci_driver = {
225 .id_table = pciidlist,
226 .probe = ast_pci_probe,
227 .remove = ast_pci_remove,
228 .driver.pm = &ast_pm_ops,
231 DEFINE_DRM_GEM_FOPS(ast_fops);
233 static struct drm_driver driver = {
234 .driver_features = DRIVER_ATOMIC |
242 .major = DRIVER_MAJOR,
243 .minor = DRIVER_MINOR,
244 .patchlevel = DRIVER_PATCHLEVEL,
249 static int __init ast_init(void)
251 if (vgacon_text_force() && ast_modeset == -1)
254 if (ast_modeset == 0)
256 return pci_register_driver(&ast_pci_driver);
258 static void __exit ast_exit(void)
260 pci_unregister_driver(&ast_pci_driver);
263 module_init(ast_init);
264 module_exit(ast_exit);
266 MODULE_AUTHOR(DRIVER_AUTHOR);
267 MODULE_DESCRIPTION(DRIVER_DESC);
268 MODULE_LICENSE("GPL and additional rights");