/* SPDX-License-Identifier: GPL-2.0-only */
 * 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.


#define DEBUG

#include <linux/rwsem.h>
#include <linux/dma-mapping.h>

#include <video/omapfb_dss.h>

#ifdef DEBUG
extern bool omapfb_debug;
#define DBG(format, ...) \
	do { \
		if (omapfb_debug) \
			printk(KERN_DEBUG "OMAPFB: " format, ## __VA_ARGS__); \
	} while (0)
#define DBG(format, ...)

#define FB2OFB(fb_info) ((struct omapfb_info *)(fb_info->par))

/* max number of overlays to which a framebuffer data can be direct */

struct omapfb2_mem_region {
	int             id;
	unsigned long	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 */
	return NULL;

static inline void omapfb_lock(struct omapfb2_device *fbdev)

static inline void omapfb_unlock(struct omapfb2_device *fbdev)

static inline int omapfb_overlay_enable(struct omap_overlay *ovl,
		int enable)
	if (enable)
		return ovl->enable(ovl);
		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);
	return rg;

static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg)