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_fbdev_generic.h>
37 #include <drm/drm_gem_shmem_helper.h>
38 #include <drm/drm_module.h>
39 #include <drm/drm_probe_helper.h>
43 static int ast_modeset = -1;
45 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
46 module_param_named(modeset, ast_modeset, int, 0400);
52 DEFINE_DRM_GEM_FOPS(ast_fops);
54 static const struct drm_driver ast_driver = {
55 .driver_features = DRIVER_ATOMIC |
63 .major = DRIVER_MAJOR,
64 .minor = DRIVER_MINOR,
65 .patchlevel = DRIVER_PATCHLEVEL,
67 DRM_GEM_SHMEM_DRIVER_OPS
74 #define PCI_VENDOR_ASPEED 0x1a03
76 #define AST_VGA_DEVICE(id, info) { \
77 .class = PCI_BASE_CLASS_DISPLAY << 16, \
78 .class_mask = 0xff0000, \
79 .vendor = PCI_VENDOR_ASPEED, \
81 .subvendor = PCI_ANY_ID, \
82 .subdevice = PCI_ANY_ID, \
83 .driver_data = (unsigned long) info }
85 static const struct pci_device_id ast_pciidlist[] = {
86 AST_VGA_DEVICE(PCI_CHIP_AST2000, NULL),
87 AST_VGA_DEVICE(PCI_CHIP_AST2100, NULL),
91 MODULE_DEVICE_TABLE(pci, ast_pciidlist);
93 static int ast_remove_conflicting_framebuffers(struct pci_dev *pdev)
96 resource_size_t base, size;
98 base = pci_resource_start(pdev, 0);
99 size = pci_resource_len(pdev, 0);
101 primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
104 return drm_aperture_remove_conflicting_framebuffers(base, size, primary, &ast_driver);
107 static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
109 struct ast_private *ast;
110 struct drm_device *dev;
113 ret = ast_remove_conflicting_framebuffers(pdev);
117 ret = pcim_enable_device(pdev);
121 ast = ast_device_create(&ast_driver, pdev, ent->driver_data);
126 ret = drm_dev_register(dev, ent->driver_data);
130 drm_fbdev_generic_setup(dev, 32);
135 static void ast_pci_remove(struct pci_dev *pdev)
137 struct drm_device *dev = pci_get_drvdata(pdev);
139 drm_dev_unregister(dev);
140 drm_atomic_helper_shutdown(dev);
143 static int ast_drm_freeze(struct drm_device *dev)
147 error = drm_mode_config_helper_suspend(dev);
150 pci_save_state(to_pci_dev(dev->dev));
154 static int ast_drm_thaw(struct drm_device *dev)
158 return drm_mode_config_helper_resume(dev);
161 static int ast_drm_resume(struct drm_device *dev)
163 if (pci_enable_device(to_pci_dev(dev->dev)))
166 return ast_drm_thaw(dev);
169 static int ast_pm_suspend(struct device *dev)
171 struct pci_dev *pdev = to_pci_dev(dev);
172 struct drm_device *ddev = pci_get_drvdata(pdev);
175 error = ast_drm_freeze(ddev);
179 pci_disable_device(pdev);
180 pci_set_power_state(pdev, PCI_D3hot);
184 static int ast_pm_resume(struct device *dev)
186 struct pci_dev *pdev = to_pci_dev(dev);
187 struct drm_device *ddev = pci_get_drvdata(pdev);
188 return ast_drm_resume(ddev);
191 static int ast_pm_freeze(struct device *dev)
193 struct pci_dev *pdev = to_pci_dev(dev);
194 struct drm_device *ddev = pci_get_drvdata(pdev);
195 return ast_drm_freeze(ddev);
198 static int ast_pm_thaw(struct device *dev)
200 struct pci_dev *pdev = to_pci_dev(dev);
201 struct drm_device *ddev = pci_get_drvdata(pdev);
202 return ast_drm_thaw(ddev);
205 static int ast_pm_poweroff(struct device *dev)
207 struct pci_dev *pdev = to_pci_dev(dev);
208 struct drm_device *ddev = pci_get_drvdata(pdev);
210 return ast_drm_freeze(ddev);
213 static const struct dev_pm_ops ast_pm_ops = {
214 .suspend = ast_pm_suspend,
215 .resume = ast_pm_resume,
216 .freeze = ast_pm_freeze,
218 .poweroff = ast_pm_poweroff,
219 .restore = ast_pm_resume,
222 static struct pci_driver ast_pci_driver = {
224 .id_table = ast_pciidlist,
225 .probe = ast_pci_probe,
226 .remove = ast_pci_remove,
227 .driver.pm = &ast_pm_ops,
230 drm_module_pci_driver_if_modeset(ast_pci_driver, ast_modeset);
232 MODULE_AUTHOR(DRIVER_AUTHOR);
233 MODULE_DESCRIPTION(DRIVER_DESC);
234 MODULE_LICENSE("GPL and additional rights");