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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * linux/drivers/video/omap2/omapfb.h4 *5 * Copyright (C) 2008 Nokia Corporation6 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>7 *8 * Some code and ideas taken from drivers/video/omap/ driver9 * 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_SUPPORT16#define DEBUG17#endif18 19#include <linux/rwsem.h>20#include <linux/dma-mapping.h>21 22#include <video/omapfb_dss.h>23 24#ifdef DEBUG25extern 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#else32#define DBG(format, ...) no_printk(format, ## __VA_ARGS__)33#endif34 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 339 40struct 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 */58struct 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 69struct 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 78struct 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 100struct 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 110void set_fb_fix(struct fb_info *fbi);111int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var);112int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type);113int omapfb_apply_changes(struct fb_info *fbi, int init);114 115int omapfb_create_sysfs(struct omapfb2_device *fbdev);116void omapfb_remove_sysfs(struct omapfb2_device *fbdev);117 118int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg);119 120int dss_mode_to_fb_mode(enum omap_color_mode dssmode,121 struct fb_var_screeninfo *var);122 123int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,124 u16 posx, u16 posy, u16 outw, u16 outh);125 126void omapfb_start_auto_update(struct omapfb2_device *fbdev,127 struct omap_dss_device *display);128void omapfb_stop_auto_update(struct omapfb2_device *fbdev,129 struct omap_dss_device *display);130int omapfb_get_update_mode(struct fb_info *fbi, enum omapfb_update_mode *mode);131int omapfb_set_update_mode(struct fb_info *fbi, enum omapfb_update_mode mode);132 133/* find the display connected to this fb, if any */134static 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 149static 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 163static inline void omapfb_lock(struct omapfb2_device *fbdev)164{165 mutex_lock(&fbdev->mtx);166}167 168static inline void omapfb_unlock(struct omapfb2_device *fbdev)169{170 mutex_unlock(&fbdev->mtx);171}172 173static inline int omapfb_overlay_enable(struct omap_overlay *ovl,174 int enable)175{176 if (enable)177 return ovl->enable(ovl);178 else179 return ovl->disable(ovl);180}181 182static inline struct omapfb2_mem_region *183omapfb_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 190static 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#endif197