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/*
* linux/drivers/video/omap2/omapfb.h
*
* Copyright (C) 2008 Nokia Corporation
* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
*
* Some code and ideas taken from drivers/video/omap/ driver
* by Imre Deak.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __DRIVERS_VIDEO_OMAP2_OMAPFB_H__
#define __DRIVERS_VIDEO_OMAP2_OMAPFB_H__
#ifdef CONFIG_FB_OMAP2_DEBUG_SUPPORT
#define DEBUG
#endif
#include <linux/rwsem.h>
#include <video/omapdss.h>
#ifdef DEBUG
extern unsigned int omapfb_debug;
#define DBG(format, ...) \
do { \
if (omapfb_debug) \
printk(KERN_DEBUG "OMAPFB: " format, ## __VA_ARGS__); \
} while (0)
#else
#define DBG(format, ...)
#endif
#define FB2OFB(fb_info) ((struct omapfb_info *)(fb_info->par))
/* max number of overlays to which a framebuffer data can be direct */
#define OMAPFB_MAX_OVL_PER_FB 3
struct omapfb2_mem_region {
int id;
u32 paddr;
void __iomem *vaddr;
struct vrfb vrfb;
unsigned long size;
u8 type; /* OMAPFB_PLANE_MEM_* */
bool alloc; /* allocated by the driver */
bool map; /* kernel mapped by the driver */
atomic_t map_count;
struct rw_semaphore lock;
atomic_t lock_count;
};
/* appended to fb_info */
struct omapfb_info {
int id;
struct omapfb2_mem_region *region;
int num_overlays;
struct omap_overlay *overlays[OMAPFB_MAX_OVL_PER_FB];
struct omapfb2_device *fbdev;
enum omap_dss_rotation_type rotation_type;
u8 rotation[OMAPFB_MAX_OVL_PER_FB];
bool mirror;
};
struct omapfb2_device {
struct device *dev;
struct mutex mtx;
u32 pseudo_palette[17];
int state;
unsigned num_fbs;
struct fb_info *fbs[10];
struct omapfb2_mem_region regions[10];
unsigned num_displays;
struct omap_dss_device *displays[10];
unsigned num_overlays;
struct omap_overlay *overlays[10];
unsigned num_managers;
struct omap_overlay_manager *managers[10];
unsigned num_bpp_overrides;
struct {
struct omap_dss_device *dssdev;
u8 bpp;
} bpp_overrides[10];
};
struct omapfb_colormode {
enum omap_color_mode dssmode;
u32 bits_per_pixel;
u32 nonstd;
struct fb_bitfield red;
struct fb_bitfield green;
struct fb_bitfield blue;
struct fb_bitfield transp;
};
void set_fb_fix(struct fb_info *fbi);
int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var);
int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type);
int omapfb_apply_changes(struct fb_info *fbi, int init);
int omapfb_create_sysfs(struct omapfb2_device *fbdev);
void omapfb_remove_sysfs(struct omapfb2_device *fbdev);
int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg);
int omapfb_update_window(struct fb_info *fbi,
u32 x, u32 y, u32 w, u32 h);
int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
struct fb_var_screeninfo *var);
int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
u16 posx, u16 posy, u16 outw, u16 outh);
/* find the display connected to this fb, if any */
static inline struct omap_dss_device *fb2display(struct fb_info *fbi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
int i;
/* XXX: returns the display connected to first attached overlay */
for (i = 0; i < ofbi->num_overlays; i++) {
if (ofbi->overlays[i]->manager)
return ofbi->overlays[i]->manager->device;
}
return NULL;
}
static inline void omapfb_lock(struct omapfb2_device *fbdev)
{
mutex_lock(&fbdev->mtx);
}
static inline void omapfb_unlock(struct omapfb2_device *fbdev)
{
mutex_unlock(&fbdev->mtx);
}
static inline int omapfb_overlay_enable(struct omap_overlay *ovl,
int enable)
{
struct omap_overlay_info info;
ovl->get_overlay_info(ovl, &info);
if (info.enabled == enable)
return 0;
info.enabled = enable;
return ovl->set_overlay_info(ovl, &info);
}
static inline struct omapfb2_mem_region *
omapfb_get_mem_region(struct omapfb2_mem_region *rg)
{
down_read_nested(&rg->lock, rg->id);
atomic_inc(&rg->lock_count);
return rg;
}
static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg)
{
atomic_dec(&rg->lock_count);
up_read(&rg->lock);
}
#endif
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