1 /* SPDX-License-Identifier: MIT */
2
3 #ifndef _LINUX_APERTURE_H_
4 #define _LINUX_APERTURE_H_
5
6 #include <linux/types.h>
7
8 struct pci_dev;
9 struct platform_device;
10
11 #if defined(CONFIG_APERTURE_HELPERS)
12 int devm_aperture_acquire_for_platform_device(struct platform_device *pdev,
13 resource_size_t base,
14 resource_size_t size);
15
16 int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t size,
17 const char *name);
18
19 int __aperture_remove_legacy_vga_devices(struct pci_dev *pdev);
20
21 int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *name);
22 #else
23 static inline int devm_aperture_acquire_for_platform_device(struct platform_device *pdev,
24 resource_size_t base,
25 resource_size_t size)
26 {
27 return 0;
28 }
29
30 static inline int aperture_remove_conflicting_devices(resource_size_t base, resource_size_t size,
31 const char *name)
32 {
33 return 0;
34 }
35
36 static inline int __aperture_remove_legacy_vga_devices(struct pci_dev *pdev)
37 {
38 return 0;
39 }
40
41 static inline int aperture_remove_conflicting_pci_devices(struct pci_dev *pdev, const char *name)
42 {
43 return 0;
44 }
45 #endif
46
47 /**
48 * aperture_remove_all_conflicting_devices - remove all existing framebuffers
49 * @name: a descriptive name of the requesting driver
50 *
51 * This function removes all graphics device drivers. Use this function on systems
52 * that can have their framebuffer located anywhere in memory.
53 *
54 * Returns:
55 * 0 on success, or a negative errno code otherwise
56 */
57 static inline int aperture_remove_all_conflicting_devices(const char *name)
58 {
59 return aperture_remove_conflicting_devices(0, (resource_size_t)-1, name);
60 }
61
62 #endif
63
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