1 /* 2 * linux/drivers/video/omap2/omapfb.h 3 * 4 * Copyright (C) 2008 Nokia Corporation 5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> 6 * 7 * Some code and ideas taken from drivers/video/omap/ driver 8 * by Imre Deak. 9 * 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. 13 * 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 17 * more details. 18 * 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/>. 21 */ 22 23 #ifndef __DRIVERS_VIDEO_OMAP2_OMAPFB_H__ 24 #define __DRIVERS_VIDEO_OMAP2_OMAPFB_H__ 25 26 #ifdef CONFIG_FB_OMAP2_DEBUG_SUPPORT 27 #define DEBUG 28 #endif 29 30 #include <linux/rwsem.h> 31 #include <linux/dma-mapping.h> 32 33 #include <video/omapfb_dss.h> 34 35 #ifdef DEBUG 36 extern bool omapfb_debug; 37 #define DBG(format, ...) \ 38 do { \ 39 if (omapfb_debug) \ 40 printk(KERN_DEBUG "OMAPFB: " format, ## __VA_ARGS__); \ 41 } while (0) 42 #else 43 #define DBG(format, ...) 44 #endif 45 46 #define FB2OFB(fb_info) ((struct omapfb_info *)(fb_info->par)) 47 48 /* max number of overlays to which a framebuffer data can be direct */ 49 #define OMAPFB_MAX_OVL_PER_FB 3 50 51 struct omapfb2_mem_region { 52 int id; 53 unsigned long attrs; 54 void *token; 55 dma_addr_t dma_handle; 56 u32 paddr; 57 void __iomem *vaddr; 58 struct vrfb vrfb; 59 unsigned long size; 60 u8 type; /* OMAPFB_PLANE_MEM_* */ 61 bool alloc; /* allocated by the driver */ 62 bool map; /* kernel mapped by the driver */ 63 atomic_t map_count; 64 struct rw_semaphore lock; 65 atomic_t lock_count; 66 }; 67 68 /* appended to fb_info */ 69 struct omapfb_info { 70 int id; 71 struct omapfb2_mem_region *region; 72 int num_overlays; 73 struct omap_overlay *overlays[OMAPFB_MAX_OVL_PER_FB]; 74 struct omapfb2_device *fbdev; 75 enum omap_dss_rotation_type rotation_type; 76 u8 rotation[OMAPFB_MAX_OVL_PER_FB]; 77 bool mirror; 78 }; 79 80 struct omapfb_display_data { 81 struct omapfb2_device *fbdev; 82 struct omap_dss_device *dssdev; 83 u8 bpp_override; 84 enum omapfb_update_mode update_mode; 85 bool auto_update_work_enabled; 86 struct delayed_work auto_update_work; 87 }; 88 89 struct omapfb2_device { 90 struct device *dev; 91 struct mutex mtx; 92 93 u32 pseudo_palette[17]; 94 95 int state; 96 97 unsigned num_fbs; 98 struct fb_info *fbs[10]; 99 struct omapfb2_mem_region regions[10]; 100 101 unsigned num_displays; 102 struct omapfb_display_data displays[10]; 103 unsigned num_overlays; 104 struct omap_overlay *overlays[10]; 105 unsigned num_managers; 106 struct omap_overlay_manager *managers[10]; 107 108 struct workqueue_struct *auto_update_wq; 109 }; 110 111 struct omapfb_colormode { 112 enum omap_color_mode dssmode; 113 u32 bits_per_pixel; 114 u32 nonstd; 115 struct fb_bitfield red; 116 struct fb_bitfield green; 117 struct fb_bitfield blue; 118 struct fb_bitfield transp; 119 }; 120 121 void set_fb_fix(struct fb_info *fbi); 122 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var); 123 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type); 124 int omapfb_apply_changes(struct fb_info *fbi, int init); 125 126 int omapfb_create_sysfs(struct omapfb2_device *fbdev); 127 void omapfb_remove_sysfs(struct omapfb2_device *fbdev); 128 129 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg); 130 131 int dss_mode_to_fb_mode(enum omap_color_mode dssmode, 132 struct fb_var_screeninfo *var); 133 134 int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl, 135 u16 posx, u16 posy, u16 outw, u16 outh); 136 137 void omapfb_start_auto_update(struct omapfb2_device *fbdev, 138 struct omap_dss_device *display); 139 void omapfb_stop_auto_update(struct omapfb2_device *fbdev, 140 struct omap_dss_device *display); 141 int omapfb_get_update_mode(struct fb_info *fbi, enum omapfb_update_mode *mode); 142 int omapfb_set_update_mode(struct fb_info *fbi, enum omapfb_update_mode mode); 143 144 /* find the display connected to this fb, if any */ 145 static inline struct omap_dss_device *fb2display(struct fb_info *fbi) 146 { 147 struct omapfb_info *ofbi = FB2OFB(fbi); 148 struct omap_overlay *ovl; 149 150 /* XXX: returns the display connected to first attached overlay */ 151 152 if (ofbi->num_overlays == 0) 153 return NULL; 154 155 ovl = ofbi->overlays[0]; 156 157 return ovl->get_device(ovl); 158 } 159 160 static inline struct omapfb_display_data *get_display_data( 161 struct omapfb2_device *fbdev, struct omap_dss_device *dssdev) 162 { 163 int i; 164 165 for (i = 0; i < fbdev->num_displays; ++i) 166 if (fbdev->displays[i].dssdev == dssdev) 167 return &fbdev->displays[i]; 168 169 /* This should never happen */ 170 BUG(); 171 return NULL; 172 } 173 174 static inline void omapfb_lock(struct omapfb2_device *fbdev) 175 { 176 mutex_lock(&fbdev->mtx); 177 } 178 179 static inline void omapfb_unlock(struct omapfb2_device *fbdev) 180 { 181 mutex_unlock(&fbdev->mtx); 182 } 183 184 static inline int omapfb_overlay_enable(struct omap_overlay *ovl, 185 int enable) 186 { 187 if (enable) 188 return ovl->enable(ovl); 189 else 190 return ovl->disable(ovl); 191 } 192 193 static inline struct omapfb2_mem_region * 194 omapfb_get_mem_region(struct omapfb2_mem_region *rg) 195 { 196 down_read_nested(&rg->lock, rg->id); 197 atomic_inc(&rg->lock_count); 198 return rg; 199 } 200 201 static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg) 202 { 203 atomic_dec(&rg->lock_count); 204 up_read(&rg->lock); 205 } 206 207 #endif 208