| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | |
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| 3 | #ifndef _FB_INTERNAL_H |
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| 4 | #define _FB_INTERNAL_H |
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| 5 | |
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| 6 | #include <linux/device.h> |
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| 7 | #include <linux/fb.h> |
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| 8 | #include <linux/mutex.h> |
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| 9 | |
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| 10 | /* fb_devfs.c */ |
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| 11 | #if defined(CONFIG_FB_DEVICE) |
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| 12 | int fb_register_chrdev(void); |
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| 13 | void fb_unregister_chrdev(void); |
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| 14 | #else |
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| 15 | static inline int fb_register_chrdev(void) |
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| 16 | { |
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| 17 | return 0; |
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| 18 | } |
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| 19 | static inline void fb_unregister_chrdev(void) |
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| 20 | { } |
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| 21 | #endif |
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| 22 | |
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| 23 | /* fb_logo.c */ |
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| 24 | #if defined(CONFIG_LOGO) |
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| 25 | extern bool fb_center_logo; |
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| 26 | extern int fb_logo_count; |
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| 27 | int fb_prepare_logo(struct fb_info *fb_info, int rotate); |
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| 28 | int fb_show_logo(struct fb_info *fb_info, int rotate); |
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| 29 | #else |
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| 30 | static inline int fb_prepare_logo(struct fb_info *info, int rotate) |
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| 31 | { |
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| 32 | return 0; |
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| 33 | } |
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| 34 | static inline int fb_show_logo(struct fb_info *info, int rotate) |
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| 35 | { |
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| 36 | return 0; |
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| 37 | } |
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| 38 | #endif /* CONFIG_LOGO */ |
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| 39 | |
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| 40 | /* fbmem.c */ |
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| 41 | extern struct class *fb_class; |
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| 42 | extern struct mutex registration_lock; |
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| 43 | extern struct fb_info *registered_fb[FB_MAX]; |
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| 44 | extern int num_registered_fb; |
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| 45 | struct fb_info *get_fb_info(unsigned int idx); |
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| 46 | void put_fb_info(struct fb_info *fb_info); |
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| 47 | |
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| 48 | /* fb_procfs.c */ |
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| 49 | #if defined(CONFIG_FB_DEVICE) |
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| 50 | int fb_init_procfs(void); |
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| 51 | void fb_cleanup_procfs(void); |
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| 52 | #else |
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| 53 | static inline int fb_init_procfs(void) |
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| 54 | { |
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| 55 | return 0; |
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| 56 | } |
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| 57 | static inline void fb_cleanup_procfs(void) |
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| 58 | { } |
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| 59 | #endif |
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| 60 | |
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| 61 | /* fbsysfs.c */ |
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| 62 | #if defined(CONFIG_FB_DEVICE) |
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| 63 | int fb_device_create(struct fb_info *fb_info); |
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| 64 | void fb_device_destroy(struct fb_info *fb_info); |
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| 65 | #else |
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| 66 | static inline int fb_device_create(struct fb_info *fb_info) |
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| 67 | { |
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| 68 | /* |
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| 69 | * Acquire a reference on the parent device to avoid |
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| 70 | * unplug operations behind our back. With the fbdev |
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| 71 | * device enabled, this is performed within register_device(). |
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| 72 | */ |
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| 73 | get_device(fb_info->device); |
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| 74 | |
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| 75 | return 0; |
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| 76 | } |
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| 77 | static inline void fb_device_destroy(struct fb_info *fb_info) |
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| 78 | { |
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| 79 | /* Undo the get_device() from fb_device_create() */ |
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| 80 | put_device(fb_info->device); |
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| 81 | } |
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| 82 | #endif |
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| 83 | |
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| 84 | #endif |
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| 85 | |
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