2 * linux/drivers/video/omap2/omapfb.h
4 * Copyright (C) 2008 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
7 * Some code and ideas taken from drivers/video/omap/ driver
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
23 #ifndef __DRIVERS_VIDEO_OMAP2_OMAPFB_H__
24 #define __DRIVERS_VIDEO_OMAP2_OMAPFB_H__
26 #ifdef CONFIG_FB_OMAP2_DEBUG_SUPPORT
30 #include <linux/rwsem.h>
32 #include <video/omapdss.h>
35 extern unsigned int omapfb_debug;
36 #define DBG(format, ...) \
39 printk(KERN_DEBUG "OMAPFB: " format, ## __VA_ARGS__); \
42 #define DBG(format, ...)
45 #define FB2OFB(fb_info) ((struct omapfb_info *)(fb_info->par))
47 /* max number of overlays to which a framebuffer data can be direct */
48 #define OMAPFB_MAX_OVL_PER_FB 3
50 struct omapfb2_mem_region {
56 u8 type; /* OMAPFB_PLANE_MEM_* */
57 bool alloc; /* allocated by the driver */
58 bool map; /* kernel mapped by the driver */
60 struct rw_semaphore lock;
64 /* appended to fb_info */
67 struct omapfb2_mem_region *region;
69 struct omap_overlay *overlays[OMAPFB_MAX_OVL_PER_FB];
70 struct omapfb2_device *fbdev;
71 enum omap_dss_rotation_type rotation_type;
72 u8 rotation[OMAPFB_MAX_OVL_PER_FB];
76 struct omapfb_display_data {
77 struct omap_dss_device *dssdev;
81 struct omapfb2_device {
85 u32 pseudo_palette[17];
90 struct fb_info *fbs[10];
91 struct omapfb2_mem_region regions[10];
93 unsigned num_displays;
94 struct omapfb_display_data displays[10];
95 unsigned num_overlays;
96 struct omap_overlay *overlays[10];
97 unsigned num_managers;
98 struct omap_overlay_manager *managers[10];
101 struct omapfb_colormode {
102 enum omap_color_mode dssmode;
105 struct fb_bitfield red;
106 struct fb_bitfield green;
107 struct fb_bitfield blue;
108 struct fb_bitfield transp;
111 void set_fb_fix(struct fb_info *fbi);
112 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var);
113 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type);
114 int omapfb_apply_changes(struct fb_info *fbi, int init);
116 int omapfb_create_sysfs(struct omapfb2_device *fbdev);
117 void omapfb_remove_sysfs(struct omapfb2_device *fbdev);
119 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg);
121 int omapfb_update_window(struct fb_info *fbi,
122 u32 x, u32 y, u32 w, u32 h);
124 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
125 struct fb_var_screeninfo *var);
127 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
128 u16 posx, u16 posy, u16 outw, u16 outh);
130 /* find the display connected to this fb, if any */
131 static inline struct omap_dss_device *fb2display(struct fb_info *fbi)
133 struct omapfb_info *ofbi = FB2OFB(fbi);
136 /* XXX: returns the display connected to first attached overlay */
137 for (i = 0; i < ofbi->num_overlays; i++) {
138 if (ofbi->overlays[i]->manager)
139 return ofbi->overlays[i]->manager->device;
145 static inline struct omapfb_display_data *get_display_data(
146 struct omapfb2_device *fbdev, struct omap_dss_device *dssdev)
150 for (i = 0; i < fbdev->num_displays; ++i)
151 if (fbdev->displays[i].dssdev == dssdev)
152 return &fbdev->displays[i];
154 /* This should never happen */
158 static inline void omapfb_lock(struct omapfb2_device *fbdev)
160 mutex_lock(&fbdev->mtx);
163 static inline void omapfb_unlock(struct omapfb2_device *fbdev)
165 mutex_unlock(&fbdev->mtx);
168 static inline int omapfb_overlay_enable(struct omap_overlay *ovl,
171 struct omap_overlay_info info;
173 ovl->get_overlay_info(ovl, &info);
174 if (info.enabled == enable)
176 info.enabled = enable;
177 return ovl->set_overlay_info(ovl, &info);
180 static inline struct omapfb2_mem_region *
181 omapfb_get_mem_region(struct omapfb2_mem_region *rg)
183 down_read_nested(&rg->lock, rg->id);
184 atomic_inc(&rg->lock_count);
188 static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg)
190 atomic_dec(&rg->lock_count);