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-rw-r--r--kernel/include/linux/fb.h818
1 files changed, 818 insertions, 0 deletions
diff --git a/kernel/include/linux/fb.h b/kernel/include/linux/fb.h
new file mode 100644
index 000000000..043f3283b
--- /dev/null
+++ b/kernel/include/linux/fb.h
@@ -0,0 +1,818 @@
+#ifndef _LINUX_FB_H
+#define _LINUX_FB_H
+
+#include <linux/kgdb.h>
+#include <uapi/linux/fb.h>
+
+#define FBIO_CURSOR _IOWR('F', 0x08, struct fb_cursor_user)
+
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/workqueue.h>
+#include <linux/notifier.h>
+#include <linux/list.h>
+#include <linux/backlight.h>
+#include <linux/slab.h>
+#include <asm/io.h>
+
+struct vm_area_struct;
+struct fb_info;
+struct device;
+struct file;
+struct videomode;
+struct device_node;
+
+/* Definitions below are used in the parsed monitor specs */
+#define FB_DPMS_ACTIVE_OFF 1
+#define FB_DPMS_SUSPEND 2
+#define FB_DPMS_STANDBY 4
+
+#define FB_DISP_DDI 1
+#define FB_DISP_ANA_700_300 2
+#define FB_DISP_ANA_714_286 4
+#define FB_DISP_ANA_1000_400 8
+#define FB_DISP_ANA_700_000 16
+
+#define FB_DISP_MONO 32
+#define FB_DISP_RGB 64
+#define FB_DISP_MULTI 128
+#define FB_DISP_UNKNOWN 256
+
+#define FB_SIGNAL_NONE 0
+#define FB_SIGNAL_BLANK_BLANK 1
+#define FB_SIGNAL_SEPARATE 2
+#define FB_SIGNAL_COMPOSITE 4
+#define FB_SIGNAL_SYNC_ON_GREEN 8
+#define FB_SIGNAL_SERRATION_ON 16
+
+#define FB_MISC_PRIM_COLOR 1
+#define FB_MISC_1ST_DETAIL 2 /* First Detailed Timing is preferred */
+#define FB_MISC_HDMI 4
+struct fb_chroma {
+ __u32 redx; /* in fraction of 1024 */
+ __u32 greenx;
+ __u32 bluex;
+ __u32 whitex;
+ __u32 redy;
+ __u32 greeny;
+ __u32 bluey;
+ __u32 whitey;
+};
+
+struct fb_monspecs {
+ struct fb_chroma chroma;
+ struct fb_videomode *modedb; /* mode database */
+ __u8 manufacturer[4]; /* Manufacturer */
+ __u8 monitor[14]; /* Monitor String */
+ __u8 serial_no[14]; /* Serial Number */
+ __u8 ascii[14]; /* ? */
+ __u32 modedb_len; /* mode database length */
+ __u32 model; /* Monitor Model */
+ __u32 serial; /* Serial Number - Integer */
+ __u32 year; /* Year manufactured */
+ __u32 week; /* Week Manufactured */
+ __u32 hfmin; /* hfreq lower limit (Hz) */
+ __u32 hfmax; /* hfreq upper limit (Hz) */
+ __u32 dclkmin; /* pixelclock lower limit (Hz) */
+ __u32 dclkmax; /* pixelclock upper limit (Hz) */
+ __u16 input; /* display type - see FB_DISP_* */
+ __u16 dpms; /* DPMS support - see FB_DPMS_ */
+ __u16 signal; /* Signal Type - see FB_SIGNAL_* */
+ __u16 vfmin; /* vfreq lower limit (Hz) */
+ __u16 vfmax; /* vfreq upper limit (Hz) */
+ __u16 gamma; /* Gamma - in fractions of 100 */
+ __u16 gtf : 1; /* supports GTF */
+ __u16 misc; /* Misc flags - see FB_MISC_* */
+ __u8 version; /* EDID version... */
+ __u8 revision; /* ...and revision */
+ __u8 max_x; /* Maximum horizontal size (cm) */
+ __u8 max_y; /* Maximum vertical size (cm) */
+};
+
+struct fb_cmap_user {
+ __u32 start; /* First entry */
+ __u32 len; /* Number of entries */
+ __u16 __user *red; /* Red values */
+ __u16 __user *green;
+ __u16 __user *blue;
+ __u16 __user *transp; /* transparency, can be NULL */
+};
+
+struct fb_image_user {
+ __u32 dx; /* Where to place image */
+ __u32 dy;
+ __u32 width; /* Size of image */
+ __u32 height;
+ __u32 fg_color; /* Only used when a mono bitmap */
+ __u32 bg_color;
+ __u8 depth; /* Depth of the image */
+ const char __user *data; /* Pointer to image data */
+ struct fb_cmap_user cmap; /* color map info */
+};
+
+struct fb_cursor_user {
+ __u16 set; /* what to set */
+ __u16 enable; /* cursor on/off */
+ __u16 rop; /* bitop operation */
+ const char __user *mask; /* cursor mask bits */
+ struct fbcurpos hot; /* cursor hot spot */
+ struct fb_image_user image; /* Cursor image */
+};
+
+/*
+ * Register/unregister for framebuffer events
+ */
+
+/* The resolution of the passed in fb_info about to change */
+#define FB_EVENT_MODE_CHANGE 0x01
+/* The display on this fb_info is beeing suspended, no access to the
+ * framebuffer is allowed any more after that call returns
+ */
+#define FB_EVENT_SUSPEND 0x02
+/* The display on this fb_info was resumed, you can restore the display
+ * if you own it
+ */
+#define FB_EVENT_RESUME 0x03
+/* An entry from the modelist was removed */
+#define FB_EVENT_MODE_DELETE 0x04
+/* A driver registered itself */
+#define FB_EVENT_FB_REGISTERED 0x05
+/* A driver unregistered itself */
+#define FB_EVENT_FB_UNREGISTERED 0x06
+/* CONSOLE-SPECIFIC: get console to framebuffer mapping */
+#define FB_EVENT_GET_CONSOLE_MAP 0x07
+/* CONSOLE-SPECIFIC: set console to framebuffer mapping */
+#define FB_EVENT_SET_CONSOLE_MAP 0x08
+/* A hardware display blank change occurred */
+#define FB_EVENT_BLANK 0x09
+/* Private modelist is to be replaced */
+#define FB_EVENT_NEW_MODELIST 0x0A
+/* The resolution of the passed in fb_info about to change and
+ all vc's should be changed */
+#define FB_EVENT_MODE_CHANGE_ALL 0x0B
+/* A software display blank change occurred */
+#define FB_EVENT_CONBLANK 0x0C
+/* Get drawing requirements */
+#define FB_EVENT_GET_REQ 0x0D
+/* Unbind from the console if possible */
+#define FB_EVENT_FB_UNBIND 0x0E
+/* CONSOLE-SPECIFIC: remap all consoles to new fb - for vga switcheroo */
+#define FB_EVENT_REMAP_ALL_CONSOLE 0x0F
+/* A hardware display blank early change occured */
+#define FB_EARLY_EVENT_BLANK 0x10
+/* A hardware display blank revert early change occured */
+#define FB_R_EARLY_EVENT_BLANK 0x11
+
+struct fb_event {
+ struct fb_info *info;
+ void *data;
+};
+
+struct fb_blit_caps {
+ u32 x;
+ u32 y;
+ u32 len;
+ u32 flags;
+};
+
+extern int fb_register_client(struct notifier_block *nb);
+extern int fb_unregister_client(struct notifier_block *nb);
+extern int fb_notifier_call_chain(unsigned long val, void *v);
+/*
+ * Pixmap structure definition
+ *
+ * The purpose of this structure is to translate data
+ * from the hardware independent format of fbdev to what
+ * format the hardware needs.
+ */
+
+#define FB_PIXMAP_DEFAULT 1 /* used internally by fbcon */
+#define FB_PIXMAP_SYSTEM 2 /* memory is in system RAM */
+#define FB_PIXMAP_IO 4 /* memory is iomapped */
+#define FB_PIXMAP_SYNC 256 /* set if GPU can DMA */
+
+struct fb_pixmap {
+ u8 *addr; /* pointer to memory */
+ u32 size; /* size of buffer in bytes */
+ u32 offset; /* current offset to buffer */
+ u32 buf_align; /* byte alignment of each bitmap */
+ u32 scan_align; /* alignment per scanline */
+ u32 access_align; /* alignment per read/write (bits) */
+ u32 flags; /* see FB_PIXMAP_* */
+ u32 blit_x; /* supported bit block dimensions (1-32)*/
+ u32 blit_y; /* Format: blit_x = 1 << (width - 1) */
+ /* blit_y = 1 << (height - 1) */
+ /* if 0, will be set to 0xffffffff (all)*/
+ /* access methods */
+ void (*writeio)(struct fb_info *info, void __iomem *dst, void *src, unsigned int size);
+ void (*readio) (struct fb_info *info, void *dst, void __iomem *src, unsigned int size);
+};
+
+#ifdef CONFIG_FB_DEFERRED_IO
+struct fb_deferred_io {
+ /* delay between mkwrite and deferred handler */
+ unsigned long delay;
+ struct mutex lock; /* mutex that protects the page list */
+ struct list_head pagelist; /* list of touched pages */
+ /* callback */
+ void (*first_io)(struct fb_info *info);
+ void (*deferred_io)(struct fb_info *info, struct list_head *pagelist);
+};
+#endif
+
+/*
+ * Frame buffer operations
+ *
+ * LOCKING NOTE: those functions must _ALL_ be called with the console
+ * semaphore held, this is the only suitable locking mechanism we have
+ * in 2.6. Some may be called at interrupt time at this point though.
+ *
+ * The exception to this is the debug related hooks. Putting the fb
+ * into a debug state (e.g. flipping to the kernel console) and restoring
+ * it must be done in a lock-free manner, so low level drivers should
+ * keep track of the initial console (if applicable) and may need to
+ * perform direct, unlocked hardware writes in these hooks.
+ */
+
+struct fb_ops {
+ /* open/release and usage marking */
+ struct module *owner;
+ int (*fb_open)(struct fb_info *info, int user);
+ int (*fb_release)(struct fb_info *info, int user);
+
+ /* For framebuffers with strange non linear layouts or that do not
+ * work with normal memory mapped access
+ */
+ ssize_t (*fb_read)(struct fb_info *info, char __user *buf,
+ size_t count, loff_t *ppos);
+ ssize_t (*fb_write)(struct fb_info *info, const char __user *buf,
+ size_t count, loff_t *ppos);
+
+ /* checks var and eventually tweaks it to something supported,
+ * DO NOT MODIFY PAR */
+ int (*fb_check_var)(struct fb_var_screeninfo *var, struct fb_info *info);
+
+ /* set the video mode according to info->var */
+ int (*fb_set_par)(struct fb_info *info);
+
+ /* set color register */
+ int (*fb_setcolreg)(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp, struct fb_info *info);
+
+ /* set color registers in batch */
+ int (*fb_setcmap)(struct fb_cmap *cmap, struct fb_info *info);
+
+ /* blank display */
+ int (*fb_blank)(int blank, struct fb_info *info);
+
+ /* pan display */
+ int (*fb_pan_display)(struct fb_var_screeninfo *var, struct fb_info *info);
+
+ /* Draws a rectangle */
+ void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
+ /* Copy data from area to another */
+ void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
+ /* Draws a image to the display */
+ void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
+
+ /* Draws cursor */
+ int (*fb_cursor) (struct fb_info *info, struct fb_cursor *cursor);
+
+ /* Rotates the display */
+ void (*fb_rotate)(struct fb_info *info, int angle);
+
+ /* wait for blit idle, optional */
+ int (*fb_sync)(struct fb_info *info);
+
+ /* perform fb specific ioctl (optional) */
+ int (*fb_ioctl)(struct fb_info *info, unsigned int cmd,
+ unsigned long arg);
+
+ /* Handle 32bit compat ioctl (optional) */
+ int (*fb_compat_ioctl)(struct fb_info *info, unsigned cmd,
+ unsigned long arg);
+
+ /* perform fb specific mmap */
+ int (*fb_mmap)(struct fb_info *info, struct vm_area_struct *vma);
+
+ /* get capability given var */
+ void (*fb_get_caps)(struct fb_info *info, struct fb_blit_caps *caps,
+ struct fb_var_screeninfo *var);
+
+ /* teardown any resources to do with this framebuffer */
+ void (*fb_destroy)(struct fb_info *info);
+
+ /* called at KDB enter and leave time to prepare the console */
+ int (*fb_debug_enter)(struct fb_info *info);
+ int (*fb_debug_leave)(struct fb_info *info);
+};
+
+#ifdef CONFIG_FB_TILEBLITTING
+#define FB_TILE_CURSOR_NONE 0
+#define FB_TILE_CURSOR_UNDERLINE 1
+#define FB_TILE_CURSOR_LOWER_THIRD 2
+#define FB_TILE_CURSOR_LOWER_HALF 3
+#define FB_TILE_CURSOR_TWO_THIRDS 4
+#define FB_TILE_CURSOR_BLOCK 5
+
+struct fb_tilemap {
+ __u32 width; /* width of each tile in pixels */
+ __u32 height; /* height of each tile in scanlines */
+ __u32 depth; /* color depth of each tile */
+ __u32 length; /* number of tiles in the map */
+ const __u8 *data; /* actual tile map: a bitmap array, packed
+ to the nearest byte */
+};
+
+struct fb_tilerect {
+ __u32 sx; /* origin in the x-axis */
+ __u32 sy; /* origin in the y-axis */
+ __u32 width; /* number of tiles in the x-axis */
+ __u32 height; /* number of tiles in the y-axis */
+ __u32 index; /* what tile to use: index to tile map */
+ __u32 fg; /* foreground color */
+ __u32 bg; /* background color */
+ __u32 rop; /* raster operation */
+};
+
+struct fb_tilearea {
+ __u32 sx; /* source origin in the x-axis */
+ __u32 sy; /* source origin in the y-axis */
+ __u32 dx; /* destination origin in the x-axis */
+ __u32 dy; /* destination origin in the y-axis */
+ __u32 width; /* number of tiles in the x-axis */
+ __u32 height; /* number of tiles in the y-axis */
+};
+
+struct fb_tileblit {
+ __u32 sx; /* origin in the x-axis */
+ __u32 sy; /* origin in the y-axis */
+ __u32 width; /* number of tiles in the x-axis */
+ __u32 height; /* number of tiles in the y-axis */
+ __u32 fg; /* foreground color */
+ __u32 bg; /* background color */
+ __u32 length; /* number of tiles to draw */
+ __u32 *indices; /* array of indices to tile map */
+};
+
+struct fb_tilecursor {
+ __u32 sx; /* cursor position in the x-axis */
+ __u32 sy; /* cursor position in the y-axis */
+ __u32 mode; /* 0 = erase, 1 = draw */
+ __u32 shape; /* see FB_TILE_CURSOR_* */
+ __u32 fg; /* foreground color */
+ __u32 bg; /* background color */
+};
+
+struct fb_tile_ops {
+ /* set tile characteristics */
+ void (*fb_settile)(struct fb_info *info, struct fb_tilemap *map);
+
+ /* all dimensions from hereon are in terms of tiles */
+
+ /* move a rectangular region of tiles from one area to another*/
+ void (*fb_tilecopy)(struct fb_info *info, struct fb_tilearea *area);
+ /* fill a rectangular region with a tile */
+ void (*fb_tilefill)(struct fb_info *info, struct fb_tilerect *rect);
+ /* copy an array of tiles */
+ void (*fb_tileblit)(struct fb_info *info, struct fb_tileblit *blit);
+ /* cursor */
+ void (*fb_tilecursor)(struct fb_info *info,
+ struct fb_tilecursor *cursor);
+ /* get maximum length of the tile map */
+ int (*fb_get_tilemax)(struct fb_info *info);
+};
+#endif /* CONFIG_FB_TILEBLITTING */
+
+/* FBINFO_* = fb_info.flags bit flags */
+#define FBINFO_MODULE 0x0001 /* Low-level driver is a module */
+#define FBINFO_HWACCEL_DISABLED 0x0002
+ /* When FBINFO_HWACCEL_DISABLED is set:
+ * Hardware acceleration is turned off. Software implementations
+ * of required functions (copyarea(), fillrect(), and imageblit())
+ * takes over; acceleration engine should be in a quiescent state */
+
+/* hints */
+#define FBINFO_VIRTFB 0x0004 /* FB is System RAM, not device. */
+#define FBINFO_PARTIAL_PAN_OK 0x0040 /* otw use pan only for double-buffering */
+#define FBINFO_READS_FAST 0x0080 /* soft-copy faster than rendering */
+
+/* hardware supported ops */
+/* semantics: when a bit is set, it indicates that the operation is
+ * accelerated by hardware.
+ * required functions will still work even if the bit is not set.
+ * optional functions may not even exist if the flag bit is not set.
+ */
+#define FBINFO_HWACCEL_NONE 0x0000
+#define FBINFO_HWACCEL_COPYAREA 0x0100 /* required */
+#define FBINFO_HWACCEL_FILLRECT 0x0200 /* required */
+#define FBINFO_HWACCEL_IMAGEBLIT 0x0400 /* required */
+#define FBINFO_HWACCEL_ROTATE 0x0800 /* optional */
+#define FBINFO_HWACCEL_XPAN 0x1000 /* optional */
+#define FBINFO_HWACCEL_YPAN 0x2000 /* optional */
+#define FBINFO_HWACCEL_YWRAP 0x4000 /* optional */
+
+#define FBINFO_MISC_USEREVENT 0x10000 /* event request
+ from userspace */
+#define FBINFO_MISC_TILEBLITTING 0x20000 /* use tile blitting */
+
+/* A driver may set this flag to indicate that it does want a set_par to be
+ * called every time when fbcon_switch is executed. The advantage is that with
+ * this flag set you can really be sure that set_par is always called before
+ * any of the functions dependent on the correct hardware state or altering
+ * that state, even if you are using some broken X releases. The disadvantage
+ * is that it introduces unwanted delays to every console switch if set_par
+ * is slow. It is a good idea to try this flag in the drivers initialization
+ * code whenever there is a bug report related to switching between X and the
+ * framebuffer console.
+ */
+#define FBINFO_MISC_ALWAYS_SETPAR 0x40000
+
+/* where the fb is a firmware driver, and can be replaced with a proper one */
+#define FBINFO_MISC_FIRMWARE 0x80000
+/*
+ * Host and GPU endianness differ.
+ */
+#define FBINFO_FOREIGN_ENDIAN 0x100000
+/*
+ * Big endian math. This is the same flags as above, but with different
+ * meaning, it is set by the fb subsystem depending FOREIGN_ENDIAN flag
+ * and host endianness. Drivers should not use this flag.
+ */
+#define FBINFO_BE_MATH 0x100000
+
+/* report to the VT layer that this fb driver can accept forced console
+ output like oopses */
+#define FBINFO_CAN_FORCE_OUTPUT 0x200000
+
+struct fb_info {
+ atomic_t count;
+ int node;
+ int flags;
+ struct mutex lock; /* Lock for open/release/ioctl funcs */
+ struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */
+ struct fb_var_screeninfo var; /* Current var */
+ struct fb_fix_screeninfo fix; /* Current fix */
+ struct fb_monspecs monspecs; /* Current Monitor specs */
+ struct work_struct queue; /* Framebuffer event queue */
+ struct fb_pixmap pixmap; /* Image hardware mapper */
+ struct fb_pixmap sprite; /* Cursor hardware mapper */
+ struct fb_cmap cmap; /* Current cmap */
+ struct list_head modelist; /* mode list */
+ struct fb_videomode *mode; /* current mode */
+
+#ifdef CONFIG_FB_BACKLIGHT
+ /* assigned backlight device */
+ /* set before framebuffer registration,
+ remove after unregister */
+ struct backlight_device *bl_dev;
+
+ /* Backlight level curve */
+ struct mutex bl_curve_mutex;
+ u8 bl_curve[FB_BACKLIGHT_LEVELS];
+#endif
+#ifdef CONFIG_FB_DEFERRED_IO
+ struct delayed_work deferred_work;
+ struct fb_deferred_io *fbdefio;
+#endif
+
+ struct fb_ops *fbops;
+ struct device *device; /* This is the parent */
+ struct device *dev; /* This is this fb device */
+ int class_flag; /* private sysfs flags */
+#ifdef CONFIG_FB_TILEBLITTING
+ struct fb_tile_ops *tileops; /* Tile Blitting */
+#endif
+ char __iomem *screen_base; /* Virtual address */
+ unsigned long screen_size; /* Amount of ioremapped VRAM or 0 */
+ void *pseudo_palette; /* Fake palette of 16 colors */
+#define FBINFO_STATE_RUNNING 0
+#define FBINFO_STATE_SUSPENDED 1
+ u32 state; /* Hardware state i.e suspend */
+ void *fbcon_par; /* fbcon use-only private area */
+ /* From here on everything is device dependent */
+ void *par;
+ /* we need the PCI or similar aperture base/size not
+ smem_start/size as smem_start may just be an object
+ allocated inside the aperture so may not actually overlap */
+ struct apertures_struct {
+ unsigned int count;
+ struct aperture {
+ resource_size_t base;
+ resource_size_t size;
+ } ranges[0];
+ } *apertures;
+
+ bool skip_vt_switch; /* no VT switch on suspend/resume required */
+};
+
+static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
+ struct apertures_struct *a = kzalloc(sizeof(struct apertures_struct)
+ + max_num * sizeof(struct aperture), GFP_KERNEL);
+ if (!a)
+ return NULL;
+ a->count = max_num;
+ return a;
+}
+
+#ifdef MODULE
+#define FBINFO_DEFAULT FBINFO_MODULE
+#else
+#define FBINFO_DEFAULT 0
+#endif
+
+// This will go away
+#define FBINFO_FLAG_MODULE FBINFO_MODULE
+#define FBINFO_FLAG_DEFAULT FBINFO_DEFAULT
+
+/* This will go away
+ * fbset currently hacks in FB_ACCELF_TEXT into var.accel_flags
+ * when it wants to turn the acceleration engine on. This is
+ * really a separate operation, and should be modified via sysfs.
+ * But for now, we leave it broken with the following define
+ */
+#define STUPID_ACCELF_TEXT_SHIT
+
+// This will go away
+#if defined(__sparc__)
+
+/* We map all of our framebuffers such that big-endian accesses
+ * are what we want, so the following is sufficient.
+ */
+
+// This will go away
+#define fb_readb sbus_readb
+#define fb_readw sbus_readw
+#define fb_readl sbus_readl
+#define fb_readq sbus_readq
+#define fb_writeb sbus_writeb
+#define fb_writew sbus_writew
+#define fb_writel sbus_writel
+#define fb_writeq sbus_writeq
+#define fb_memset sbus_memset_io
+#define fb_memcpy_fromfb sbus_memcpy_fromio
+#define fb_memcpy_tofb sbus_memcpy_toio
+
+#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || defined(__avr32__) || defined(__bfin__) || defined(__arm__)
+
+#define fb_readb __raw_readb
+#define fb_readw __raw_readw
+#define fb_readl __raw_readl
+#define fb_readq __raw_readq
+#define fb_writeb __raw_writeb
+#define fb_writew __raw_writew
+#define fb_writel __raw_writel
+#define fb_writeq __raw_writeq
+#define fb_memset memset_io
+#define fb_memcpy_fromfb memcpy_fromio
+#define fb_memcpy_tofb memcpy_toio
+
+#else
+
+#define fb_readb(addr) (*(volatile u8 *) (addr))
+#define fb_readw(addr) (*(volatile u16 *) (addr))
+#define fb_readl(addr) (*(volatile u32 *) (addr))
+#define fb_readq(addr) (*(volatile u64 *) (addr))
+#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b))
+#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b))
+#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b))
+#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b))
+#define fb_memset memset
+#define fb_memcpy_fromfb memcpy
+#define fb_memcpy_tofb memcpy
+
+#endif
+
+#define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0)
+#define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \
+ (val) << (bits))
+#define FB_SHIFT_LOW(p, val, bits) (fb_be_math(p) ? (val) << (bits) : \
+ (val) >> (bits))
+
+ /*
+ * `Generic' versions of the frame buffer device operations
+ */
+
+extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var);
+extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var);
+extern int fb_blank(struct fb_info *info, int blank);
+extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
+extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area);
+extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image);
+/*
+ * Drawing operations where framebuffer is in system RAM
+ */
+extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect);
+extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area);
+extern void sys_imageblit(struct fb_info *info, const struct fb_image *image);
+extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf,
+ size_t count, loff_t *ppos);
+extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf,
+ size_t count, loff_t *ppos);
+
+/* drivers/video/fbmem.c */
+extern int register_framebuffer(struct fb_info *fb_info);
+extern int unregister_framebuffer(struct fb_info *fb_info);
+extern int unlink_framebuffer(struct fb_info *fb_info);
+extern int remove_conflicting_framebuffers(struct apertures_struct *a,
+ const char *name, bool primary);
+extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
+extern int fb_show_logo(struct fb_info *fb_info, int rotate);
+extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
+extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
+ u32 height, u32 shift_high, u32 shift_low, u32 mod);
+extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
+extern void fb_set_suspend(struct fb_info *info, int state);
+extern int fb_get_color_depth(struct fb_var_screeninfo *var,
+ struct fb_fix_screeninfo *fix);
+extern int fb_get_options(const char *name, char **option);
+extern int fb_new_modelist(struct fb_info *info);
+
+extern struct fb_info *registered_fb[FB_MAX];
+extern int num_registered_fb;
+extern struct class *fb_class;
+
+extern int lock_fb_info(struct fb_info *info);
+
+static inline void unlock_fb_info(struct fb_info *info)
+{
+ mutex_unlock(&info->lock);
+}
+
+static inline void __fb_pad_aligned_buffer(u8 *dst, u32 d_pitch,
+ u8 *src, u32 s_pitch, u32 height)
+{
+ u32 i, j;
+
+ d_pitch -= s_pitch;
+
+ for (i = height; i--; ) {
+ /* s_pitch is a few bytes at the most, memcpy is suboptimal */
+ for (j = 0; j < s_pitch; j++)
+ *dst++ = *src++;
+ dst += d_pitch;
+ }
+}
+
+/* drivers/video/fb_defio.c */
+extern void fb_deferred_io_init(struct fb_info *info);
+extern void fb_deferred_io_open(struct fb_info *info,
+ struct inode *inode,
+ struct file *file);
+extern void fb_deferred_io_cleanup(struct fb_info *info);
+extern int fb_deferred_io_fsync(struct file *file, loff_t start,
+ loff_t end, int datasync);
+
+static inline bool fb_be_math(struct fb_info *info)
+{
+#ifdef CONFIG_FB_FOREIGN_ENDIAN
+#if defined(CONFIG_FB_BOTH_ENDIAN)
+ return info->flags & FBINFO_BE_MATH;
+#elif defined(CONFIG_FB_BIG_ENDIAN)
+ return true;
+#elif defined(CONFIG_FB_LITTLE_ENDIAN)
+ return false;
+#endif /* CONFIG_FB_BOTH_ENDIAN */
+#else
+#ifdef __BIG_ENDIAN
+ return true;
+#else
+ return false;
+#endif /* __BIG_ENDIAN */
+#endif /* CONFIG_FB_FOREIGN_ENDIAN */
+}
+
+/* drivers/video/fbsysfs.c */
+extern struct fb_info *framebuffer_alloc(size_t size, struct device *dev);
+extern void framebuffer_release(struct fb_info *info);
+extern int fb_init_device(struct fb_info *fb_info);
+extern void fb_cleanup_device(struct fb_info *head);
+extern void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max);
+
+/* drivers/video/fbmon.c */
+#define FB_MAXTIMINGS 0
+#define FB_VSYNCTIMINGS 1
+#define FB_HSYNCTIMINGS 2
+#define FB_DCLKTIMINGS 3
+#define FB_IGNOREMON 0x100
+
+#define FB_MODE_IS_UNKNOWN 0
+#define FB_MODE_IS_DETAILED 1
+#define FB_MODE_IS_STANDARD 2
+#define FB_MODE_IS_VESA 4
+#define FB_MODE_IS_CALCULATED 8
+#define FB_MODE_IS_FIRST 16
+#define FB_MODE_IS_FROM_VAR 32
+
+extern int fbmon_dpms(const struct fb_info *fb_info);
+extern int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var,
+ struct fb_info *info);
+extern int fb_validate_mode(const struct fb_var_screeninfo *var,
+ struct fb_info *info);
+extern int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var);
+extern const unsigned char *fb_firmware_edid(struct device *device);
+extern void fb_edid_to_monspecs(unsigned char *edid,
+ struct fb_monspecs *specs);
+extern void fb_edid_add_monspecs(unsigned char *edid,
+ struct fb_monspecs *specs);
+extern void fb_destroy_modedb(struct fb_videomode *modedb);
+extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb);
+extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter);
+
+extern int of_get_fb_videomode(struct device_node *np,
+ struct fb_videomode *fb,
+ int index);
+extern int fb_videomode_from_videomode(const struct videomode *vm,
+ struct fb_videomode *fbmode);
+
+/* drivers/video/modedb.c */
+#define VESA_MODEDB_SIZE 43
+#define DMT_SIZE 0x50
+
+extern void fb_var_to_videomode(struct fb_videomode *mode,
+ const struct fb_var_screeninfo *var);
+extern void fb_videomode_to_var(struct fb_var_screeninfo *var,
+ const struct fb_videomode *mode);
+extern int fb_mode_is_equal(const struct fb_videomode *mode1,
+ const struct fb_videomode *mode2);
+extern int fb_add_videomode(const struct fb_videomode *mode,
+ struct list_head *head);
+extern void fb_delete_videomode(const struct fb_videomode *mode,
+ struct list_head *head);
+extern const struct fb_videomode *fb_match_mode(const struct fb_var_screeninfo *var,
+ struct list_head *head);
+extern const struct fb_videomode *fb_find_best_mode(const struct fb_var_screeninfo *var,
+ struct list_head *head);
+extern const struct fb_videomode *fb_find_nearest_mode(const struct fb_videomode *mode,
+ struct list_head *head);
+extern void fb_destroy_modelist(struct list_head *head);
+extern void fb_videomode_to_modelist(const struct fb_videomode *modedb, int num,
+ struct list_head *head);
+extern const struct fb_videomode *fb_find_best_display(const struct fb_monspecs *specs,
+ struct list_head *head);
+
+/* drivers/video/fbcmap.c */
+extern int fb_alloc_cmap(struct fb_cmap *cmap, int len, int transp);
+extern int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags);
+extern void fb_dealloc_cmap(struct fb_cmap *cmap);
+extern int fb_copy_cmap(const struct fb_cmap *from, struct fb_cmap *to);
+extern int fb_cmap_to_user(const struct fb_cmap *from, struct fb_cmap_user *to);
+extern int fb_set_cmap(struct fb_cmap *cmap, struct fb_info *fb_info);
+extern int fb_set_user_cmap(struct fb_cmap_user *cmap, struct fb_info *fb_info);
+extern const struct fb_cmap *fb_default_cmap(int len);
+extern void fb_invert_cmaps(void);
+
+struct fb_videomode {
+ const char *name; /* optional */
+ u32 refresh; /* optional */
+ u32 xres;
+ u32 yres;
+ u32 pixclock;
+ u32 left_margin;
+ u32 right_margin;
+ u32 upper_margin;
+ u32 lower_margin;
+ u32 hsync_len;
+ u32 vsync_len;
+ u32 sync;
+ u32 vmode;
+ u32 flag;
+};
+
+struct dmt_videomode {
+ u32 dmt_id;
+ u32 std_2byte_code;
+ u32 cvt_3byte_code;
+ const struct fb_videomode *mode;
+};
+
+extern const char *fb_mode_option;
+extern const struct fb_videomode vesa_modes[];
+extern const struct fb_videomode cea_modes[64];
+extern const struct dmt_videomode dmt_modes[];
+
+struct fb_modelist {
+ struct list_head list;
+ struct fb_videomode mode;
+};
+
+extern int fb_find_mode(struct fb_var_screeninfo *var,
+ struct fb_info *info, const char *mode_option,
+ const struct fb_videomode *db,
+ unsigned int dbsize,
+ const struct fb_videomode *default_mode,
+ unsigned int default_bpp);
+
+/* Convenience logging macros */
+#define fb_err(fb_info, fmt, ...) \
+ pr_err("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
+#define fb_notice(info, fmt, ...) \
+ pr_notice("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
+#define fb_warn(fb_info, fmt, ...) \
+ pr_warn("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
+#define fb_info(fb_info, fmt, ...) \
+ pr_info("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
+#define fb_dbg(fb_info, fmt, ...) \
+ pr_debug("fb%d: " fmt, (fb_info)->node, ##__VA_ARGS__)
+
+#endif /* _LINUX_FB_H */