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 */
fb2display(struct fb_info * fbi)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
get_display_data(struct omapfb2_device * fbdev,struct omap_dss_device * dssdev)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
omapfb_lock(struct omapfb2_device * fbdev)163 static inline void omapfb_lock(struct omapfb2_device *fbdev)
164 {
165 mutex_lock(&fbdev->mtx);
166 }
167
omapfb_unlock(struct omapfb2_device * fbdev)168 static inline void omapfb_unlock(struct omapfb2_device *fbdev)
169 {
170 mutex_unlock(&fbdev->mtx);
171 }
172
omapfb_overlay_enable(struct omap_overlay * ovl,int enable)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 *
omapfb_get_mem_region(struct omapfb2_mem_region * rg)183 omapfb_get_mem_region(struct omapfb2_mem_region *rg)
184 {
185 down_read_nested(&rg->lock, rg->id);
186 atomic_inc(&rg->lock_count);
187 return rg;
188 }
189
omapfb_put_mem_region(struct omapfb2_mem_region * rg)190 static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg)
191 {
192 atomic_dec(&rg->lock_count);
193 up_read(&rg->lock);
194 }
195
196 #endif
197