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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 <linux/dma-attrs.h>
#include <linux/dma-mapping.h>
#include <video/omapdss.h>
#ifdef DEBUG
extern bool 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;
struct dma_attrs attrs;
void *token;
dma_addr_t dma_handle;
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 omapfb_display_data {
struct omapfb2_device *fbdev;
struct omap_dss_device *dssdev;
u8 bpp_override;
enum omapfb_update_mode update_mode;
bool auto_update_work_enabled;
struct delayed_work auto_update_work;
};
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 omapfb_display_data displays[10];
unsigned num_overlays;
struct omap_overlay *overlays[10];
unsigned num_managers;
struct omap_overlay_manager *managers[10];
struct workqueue_struct *auto_update_wq;
};
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 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);
void omapfb_start_auto_update(struct omapfb2_device *fbdev,
struct omap_dss_device *display);
void omapfb_stop_auto_update(struct omapfb2_device *fbdev,
struct omap_dss_device *display);
int omapfb_get_update_mode(struct fb_info *fbi, enum omapfb_update_mode *mode);
int omapfb_set_update_mode(struct fb_info *fbi, enum omapfb_update_mode mode);
/* 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);
struct omap_overlay *ovl;
/* XXX: returns the display connected to first attached overlay */
if (ofbi->num_overlays == 0)
return NULL;
ovl = ofbi->overlays[0];
return ovl->get_device(ovl);
}
static inline struct omapfb_display_data *get_display_data(
struct omapfb2_device *fbdev, struct omap_dss_device *dssdev)
{
int i;
for (i = 0; i < fbdev->num_displays; ++i)
if (fbdev->displays[i].dssdev == dssdev)
return &fbdev->displays[i];
/* This should never happen */
BUG();
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)
{
if (enable)
return ovl->enable(ovl);
else
return ovl->disable(ovl);
}
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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