1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * linux/drivers/video/omap2/omapfb.h |
4 | * |
5 | * Copyright (C) 2008 Nokia Corporation |
6 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> |
7 | * |
8 | * Some code and ideas taken from drivers/video/omap/ driver |
9 | * by Imre Deak. |
10 | */ |
11 | |
12 | #ifndef __DRIVERS_VIDEO_OMAP2_OMAPFB_H__ |
13 | #define __DRIVERS_VIDEO_OMAP2_OMAPFB_H__ |
14 | |
15 | #ifdef CONFIG_FB_OMAP2_DEBUG_SUPPORT |
16 | #define DEBUG |
17 | #endif |
18 | |
19 | #include <linux/rwsem.h> |
20 | #include <linux/dma-mapping.h> |
21 | |
22 | #include <video/omapfb_dss.h> |
23 | |
24 | #ifdef DEBUG |
25 | extern bool omapfb_debug; |
26 | #define DBG(format, ...) \ |
27 | do { \ |
28 | if (omapfb_debug) \ |
29 | printk(KERN_DEBUG "OMAPFB: " format, ## __VA_ARGS__); \ |
30 | } while (0) |
31 | #else |
32 | #define DBG(format, ...) no_printk(format, ## __VA_ARGS__) |
33 | #endif |
34 | |
35 | #define FB2OFB(fb_info) ((struct omapfb_info *)(fb_info->par)) |
36 | |
37 | /* max number of overlays to which a framebuffer data can be direct */ |
38 | #define OMAPFB_MAX_OVL_PER_FB 3 |
39 | |
40 | struct omapfb2_mem_region { |
41 | int id; |
42 | unsigned long attrs; |
43 | void *token; |
44 | dma_addr_t dma_handle; |
45 | u32 paddr; |
46 | void __iomem *vaddr; |
47 | struct vrfb vrfb; |
48 | unsigned long size; |
49 | u8 type; /* OMAPFB_PLANE_MEM_* */ |
50 | bool alloc; /* allocated by the driver */ |
51 | bool map; /* kernel mapped by the driver */ |
52 | atomic_t map_count; |
53 | struct rw_semaphore lock; |
54 | atomic_t lock_count; |
55 | }; |
56 | |
57 | /* appended to fb_info */ |
58 | struct omapfb_info { |
59 | int id; |
60 | struct omapfb2_mem_region *region; |
61 | int num_overlays; |
62 | struct omap_overlay *overlays[OMAPFB_MAX_OVL_PER_FB]; |
63 | struct omapfb2_device *fbdev; |
64 | enum omap_dss_rotation_type rotation_type; |
65 | u8 rotation[OMAPFB_MAX_OVL_PER_FB]; |
66 | bool mirror; |
67 | }; |
68 | |
69 | struct omapfb_display_data { |
70 | struct omapfb2_device *fbdev; |
71 | struct omap_dss_device *dssdev; |
72 | u8 bpp_override; |
73 | enum omapfb_update_mode update_mode; |
74 | bool auto_update_work_enabled; |
75 | struct delayed_work auto_update_work; |
76 | }; |
77 | |
78 | struct omapfb2_device { |
79 | struct device *dev; |
80 | struct mutex mtx; |
81 | |
82 | u32 pseudo_palette[17]; |
83 | |
84 | int state; |
85 | |
86 | unsigned num_fbs; |
87 | struct fb_info *fbs[10]; |
88 | struct omapfb2_mem_region regions[10]; |
89 | |
90 | unsigned num_displays; |
91 | struct omapfb_display_data displays[10]; |
92 | unsigned num_overlays; |
93 | struct omap_overlay *overlays[10]; |
94 | unsigned num_managers; |
95 | struct omap_overlay_manager *managers[10]; |
96 | |
97 | struct workqueue_struct *auto_update_wq; |
98 | }; |
99 | |
100 | struct omapfb_colormode { |
101 | enum omap_color_mode dssmode; |
102 | u32 bits_per_pixel; |
103 | u32 nonstd; |
104 | struct fb_bitfield red; |
105 | struct fb_bitfield green; |
106 | struct fb_bitfield blue; |
107 | struct fb_bitfield transp; |
108 | }; |
109 | |
110 | void set_fb_fix(struct fb_info *fbi); |
111 | int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var); |
112 | int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type); |
113 | int omapfb_apply_changes(struct fb_info *fbi, int init); |
114 | |
115 | int omapfb_create_sysfs(struct omapfb2_device *fbdev); |
116 | void omapfb_remove_sysfs(struct omapfb2_device *fbdev); |
117 | |
118 | int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg); |
119 | |
120 | int dss_mode_to_fb_mode(enum omap_color_mode dssmode, |
121 | struct fb_var_screeninfo *var); |
122 | |
123 | int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl, |
124 | u16 posx, u16 posy, u16 outw, u16 outh); |
125 | |
126 | void omapfb_start_auto_update(struct omapfb2_device *fbdev, |
127 | struct omap_dss_device *display); |
128 | void omapfb_stop_auto_update(struct omapfb2_device *fbdev, |
129 | struct omap_dss_device *display); |
130 | int omapfb_get_update_mode(struct fb_info *fbi, enum omapfb_update_mode *mode); |
131 | int omapfb_set_update_mode(struct fb_info *fbi, enum omapfb_update_mode mode); |
132 | |
133 | /* find the display connected to this fb, if any */ |
134 | static inline struct omap_dss_device *fb2display(struct fb_info *fbi) |
135 | { |
136 | struct omapfb_info *ofbi = FB2OFB(fbi); |
137 | struct omap_overlay *ovl; |
138 | |
139 | /* XXX: returns the display connected to first attached overlay */ |
140 | |
141 | if (ofbi->num_overlays == 0) |
142 | return NULL; |
143 | |
144 | ovl = ofbi->overlays[0]; |
145 | |
146 | return ovl->get_device(ovl); |
147 | } |
148 | |
149 | static inline struct omapfb_display_data *get_display_data( |
150 | struct omapfb2_device *fbdev, struct omap_dss_device *dssdev) |
151 | { |
152 | int i; |
153 | |
154 | for (i = 0; i < fbdev->num_displays; ++i) |
155 | if (fbdev->displays[i].dssdev == dssdev) |
156 | return &fbdev->displays[i]; |
157 | |
158 | /* This should never happen */ |
159 | BUG(); |
160 | return NULL; |
161 | } |
162 | |
163 | static inline void omapfb_lock(struct omapfb2_device *fbdev) |
164 | { |
165 | mutex_lock(&fbdev->mtx); |
166 | } |
167 | |
168 | static inline void omapfb_unlock(struct omapfb2_device *fbdev) |
169 | { |
170 | mutex_unlock(lock: &fbdev->mtx); |
171 | } |
172 | |
173 | static inline int omapfb_overlay_enable(struct omap_overlay *ovl, |
174 | int enable) |
175 | { |
176 | if (enable) |
177 | return ovl->enable(ovl); |
178 | else |
179 | return ovl->disable(ovl); |
180 | } |
181 | |
182 | static inline struct omapfb2_mem_region * |
183 | omapfb_get_mem_region(struct omapfb2_mem_region *rg) |
184 | { |
185 | down_read_nested(sem: &rg->lock, subclass: rg->id); |
186 | atomic_inc(v: &rg->lock_count); |
187 | return rg; |
188 | } |
189 | |
190 | static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg) |
191 | { |
192 | atomic_dec(v: &rg->lock_count); |
193 | up_read(sem: &rg->lock); |
194 | } |
195 | |
196 | #endif |
197 | |