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
26 * Authors: Dave Airlie <airlied@redhat.com>
28 #include <linux/module.h>
29 #include <linux/console.h>
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/drm_probe_helper.h>
39 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
40 module_param_named(modeset, ast_modeset, int, 0400);
42 #define PCI_VENDOR_ASPEED 0x1a03
44 static struct drm_driver driver;
46 #define AST_VGA_DEVICE(id, info) { \
47 .class = PCI_BASE_CLASS_DISPLAY << 16, \
48 .class_mask = 0xff0000, \
49 .vendor = PCI_VENDOR_ASPEED, \
51 .subvendor = PCI_ANY_ID, \
52 .subdevice = PCI_ANY_ID, \
53 .driver_data = (unsigned long) info }
55 static 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 */
62 MODULE_DEVICE_TABLE(pci, pciidlist);
64 static void ast_kick_out_firmware_fb(struct pci_dev *pdev)
66 struct apertures_struct *ap;
69 ap = alloc_apertures(1);
73 ap->ranges[0].base = pci_resource_start(pdev, 0);
74 ap->ranges[0].size = pci_resource_len(pdev, 0);
77 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
79 drm_fb_helper_remove_conflicting_framebuffers(ap, "astdrmfb", primary);
83 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
85 ast_kick_out_firmware_fb(pdev);
87 return drm_get_pci_dev(pdev, ent, &driver);
91 ast_pci_remove(struct pci_dev *pdev)
93 struct drm_device *dev = pci_get_drvdata(pdev);
100 static int ast_drm_freeze(struct drm_device *dev)
102 drm_kms_helper_poll_disable(dev);
104 pci_save_state(dev->pdev);
107 ast_fbdev_set_suspend(dev, 1);
112 static int ast_drm_thaw(struct drm_device *dev)
118 drm_mode_config_reset(dev);
119 drm_helper_resume_force_mode(dev);
122 ast_fbdev_set_suspend(dev, 0);
127 static int ast_drm_resume(struct drm_device *dev)
131 if (pci_enable_device(dev->pdev))
134 ret = ast_drm_thaw(dev);
138 drm_kms_helper_poll_enable(dev);
142 static int ast_pm_suspend(struct device *dev)
144 struct pci_dev *pdev = to_pci_dev(dev);
145 struct drm_device *ddev = pci_get_drvdata(pdev);
148 error = ast_drm_freeze(ddev);
152 pci_disable_device(pdev);
153 pci_set_power_state(pdev, PCI_D3hot);
156 static int ast_pm_resume(struct device *dev)
158 struct pci_dev *pdev = to_pci_dev(dev);
159 struct drm_device *ddev = pci_get_drvdata(pdev);
160 return ast_drm_resume(ddev);
163 static int ast_pm_freeze(struct device *dev)
165 struct pci_dev *pdev = to_pci_dev(dev);
166 struct drm_device *ddev = pci_get_drvdata(pdev);
168 if (!ddev || !ddev->dev_private)
170 return ast_drm_freeze(ddev);
174 static int ast_pm_thaw(struct device *dev)
176 struct pci_dev *pdev = to_pci_dev(dev);
177 struct drm_device *ddev = pci_get_drvdata(pdev);
178 return ast_drm_thaw(ddev);
181 static int ast_pm_poweroff(struct device *dev)
183 struct pci_dev *pdev = to_pci_dev(dev);
184 struct drm_device *ddev = pci_get_drvdata(pdev);
186 return ast_drm_freeze(ddev);
189 static const struct dev_pm_ops ast_pm_ops = {
190 .suspend = ast_pm_suspend,
191 .resume = ast_pm_resume,
192 .freeze = ast_pm_freeze,
194 .poweroff = ast_pm_poweroff,
195 .restore = ast_pm_resume,
198 static struct pci_driver ast_pci_driver = {
200 .id_table = pciidlist,
201 .probe = ast_pci_probe,
202 .remove = ast_pci_remove,
203 .driver.pm = &ast_pm_ops,
206 static const struct file_operations ast_fops = {
207 .owner = THIS_MODULE,
208 DRM_VRAM_MM_FILE_OPERATIONS
211 static struct drm_driver driver = {
212 .driver_features = DRIVER_MODESET | DRIVER_GEM,
214 .load = ast_driver_load,
215 .unload = ast_driver_unload,
221 .major = DRIVER_MAJOR,
222 .minor = DRIVER_MINOR,
223 .patchlevel = DRIVER_PATCHLEVEL,
228 static int __init ast_init(void)
230 if (vgacon_text_force() && ast_modeset == -1)
233 if (ast_modeset == 0)
235 return pci_register_driver(&ast_pci_driver);
237 static void __exit ast_exit(void)
239 pci_unregister_driver(&ast_pci_driver);
242 module_init(ast_init);
243 module_exit(ast_exit);
245 MODULE_AUTHOR(DRIVER_AUTHOR);
246 MODULE_DESCRIPTION(DRIVER_DESC);
247 MODULE_LICENSE("GPL and additional rights");