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/module.h>
30 #include <linux/pci.h>
32 #include <drm/drm_aperture.h>
33 #include <drm/drm_atomic_helper.h>
34 #include <drm/drm_crtc_helper.h>
35 #include <drm/drm_drv.h>
36 #include <drm/drm_gem_vram_helper.h>
37 #include <drm/drm_module.h>
38 #include <drm/drm_probe_helper.h>
42 static int ast_modeset = -1;
44 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
45 module_param_named(modeset, ast_modeset, int, 0400);
51 DEFINE_DRM_GEM_FOPS(ast_fops);
53 static const struct drm_driver ast_driver = {
54 .driver_features = DRIVER_ATOMIC |
62 .major = DRIVER_MAJOR,
63 .minor = DRIVER_MINOR,
64 .patchlevel = DRIVER_PATCHLEVEL,
73 #define PCI_VENDOR_ASPEED 0x1a03
75 #define AST_VGA_DEVICE(id, info) { \
76 .class = PCI_BASE_CLASS_DISPLAY << 16, \
77 .class_mask = 0xff0000, \
78 .vendor = PCI_VENDOR_ASPEED, \
80 .subvendor = PCI_ANY_ID, \
81 .subdevice = PCI_ANY_ID, \
82 .driver_data = (unsigned long) info }
84 static const struct pci_device_id ast_pciidlist[] = {
85 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
86 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
90 MODULE_DEVICE_TABLE(pci, ast_pciidlist);
92 static int ast_remove_conflicting_framebuffers(struct pci_dev *pdev)
95 resource_size_t base, size;
97 base = pci_resource_start(pdev, 0);
98 size = pci_resource_len(pdev, 0);
100 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
103 return drm_aperture_remove_conflicting_framebuffers(base, size, primary, &ast_driver);
106 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
108 struct ast_private *ast;
109 struct drm_device *dev;
112 ret = ast_remove_conflicting_framebuffers(pdev);
116 ret = pcim_enable_device(pdev);
120 ast = ast_device_create(&ast_driver, pdev, ent->driver_data);
125 ret = drm_dev_register(dev, ent->driver_data);
129 drm_fbdev_generic_setup(dev, 32);
134 static void ast_pci_remove(struct pci_dev *pdev)
136 struct drm_device *dev = pci_get_drvdata(pdev);
138 drm_dev_unregister(dev);
139 drm_atomic_helper_shutdown(dev);
142 static int ast_drm_freeze(struct drm_device *dev)
146 error = drm_mode_config_helper_suspend(dev);
149 pci_save_state(to_pci_dev(dev->dev));
153 static int ast_drm_thaw(struct drm_device *dev)
157 return drm_mode_config_helper_resume(dev);
160 static int ast_drm_resume(struct drm_device *dev)
162 if (pci_enable_device(to_pci_dev(dev->dev)))
165 return ast_drm_thaw(dev);
168 static int ast_pm_suspend(struct device *dev)
170 struct pci_dev *pdev = to_pci_dev(dev);
171 struct drm_device *ddev = pci_get_drvdata(pdev);
174 error = ast_drm_freeze(ddev);
178 pci_disable_device(pdev);
179 pci_set_power_state(pdev, PCI_D3hot);
183 static int ast_pm_resume(struct device *dev)
185 struct pci_dev *pdev = to_pci_dev(dev);
186 struct drm_device *ddev = pci_get_drvdata(pdev);
187 return ast_drm_resume(ddev);
190 static int ast_pm_freeze(struct device *dev)
192 struct pci_dev *pdev = to_pci_dev(dev);
193 struct drm_device *ddev = pci_get_drvdata(pdev);
194 return ast_drm_freeze(ddev);
197 static int ast_pm_thaw(struct device *dev)
199 struct pci_dev *pdev = to_pci_dev(dev);
200 struct drm_device *ddev = pci_get_drvdata(pdev);
201 return ast_drm_thaw(ddev);
204 static int ast_pm_poweroff(struct device *dev)
206 struct pci_dev *pdev = to_pci_dev(dev);
207 struct drm_device *ddev = pci_get_drvdata(pdev);
209 return ast_drm_freeze(ddev);
212 static const struct dev_pm_ops ast_pm_ops = {
213 .suspend = ast_pm_suspend,
214 .resume = ast_pm_resume,
215 .freeze = ast_pm_freeze,
217 .poweroff = ast_pm_poweroff,
218 .restore = ast_pm_resume,
221 static struct pci_driver ast_pci_driver = {
223 .id_table = ast_pciidlist,
224 .probe = ast_pci_probe,
225 .remove = ast_pci_remove,
226 .driver.pm = &ast_pm_ops,
229 drm_module_pci_driver_if_modeset(ast_pci_driver, ast_modeset);
231 MODULE_AUTHOR(DRIVER_AUTHOR);
232 MODULE_DESCRIPTION(DRIVER_DESC);
233 MODULE_LICENSE("GPL and additional rights");