diff options
Diffstat (limited to 'drivers/video/fbdev/omap2/omapfb/omapfb.h')
| -rw-r--r-- | drivers/video/fbdev/omap2/omapfb/omapfb.h | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb.h b/drivers/video/fbdev/omap2/omapfb/omapfb.h new file mode 100644 index 000000000..d27abccb3 --- /dev/null +++ b/drivers/video/fbdev/omap2/omapfb/omapfb.h @@ -0,0 +1,196 @@ +/* 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. + */ + +#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-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) +#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; + 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 */ + 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 |