video: move fbdev to drivers/video/fbdev

The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.

Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.

No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 0 insertions, 1037 deletions

diff --git a/drivers/video/skeletonfb.c b/drivers/video/skeletonfb.c
deleted file mode 100644
index fefde7c..0000000
--- a/drivers/video/skeletonfb.c
+++ /dev/null
@@ -1,1037 +0,0 @@
-/*
- * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
- *
- *  Modified to new api Jan 2001 by James Simmons (jsimmons@transvirtual.com)
- *
- *  Created 28 Dec 1997 by Geert Uytterhoeven
- *
- *
- *  I have started rewriting this driver as a example of the upcoming new API
- *  The primary goal is to remove the console code from fbdev and place it
- *  into fbcon.c. This reduces the code and makes writing a new fbdev driver
- *  easy since the author doesn't need to worry about console internals. It
- *  also allows the ability to run fbdev without a console/tty system on top 
- *  of it. 
- *
- *  First the roles of struct fb_info and struct display have changed. Struct
- *  display will go away. The way the new framebuffer console code will
- *  work is that it will act to translate data about the tty/console in 
- *  struct vc_data to data in a device independent way in struct fb_info. Then
- *  various functions in struct fb_ops will be called to store the device 
- *  dependent state in the par field in struct fb_info and to change the 
- *  hardware to that state. This allows a very clean separation of the fbdev
- *  layer from the console layer. It also allows one to use fbdev on its own
- *  which is a bounus for embedded devices. The reason this approach works is  
- *  for each framebuffer device when used as a tty/console device is allocated
- *  a set of virtual terminals to it. Only one virtual terminal can be active 
- *  per framebuffer device. We already have all the data we need in struct 
- *  vc_data so why store a bunch of colormaps and other fbdev specific data
- *  per virtual terminal. 
- *
- *  As you can see doing this makes the con parameter pretty much useless
- *  for struct fb_ops functions, as it should be. Also having struct  
- *  fb_var_screeninfo and other data in fb_info pretty much eliminates the 
- *  need for get_fix and get_var. Once all drivers use the fix, var, and cmap
- *  fbcon can be written around these fields. This will also eliminate the
- *  need to regenerate struct fb_var_screeninfo, struct fb_fix_screeninfo
- *  struct fb_cmap every time get_var, get_fix, get_cmap functions are called
- *  as many drivers do now. 
- *
- *  This file is subject to the terms and conditions of the GNU General Public
- *  License. See the file COPYING in the main directory of this archive for
- *  more details.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/fb.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-
-    /*
-     *  This is just simple sample code.
-     *
-     *  No warranty that it actually compiles.
-     *  Even less warranty that it actually works :-)
-     */
-
-/*
- * Driver data
- */
-static char *mode_option;
-
-/*
- *  If your driver supports multiple boards, you should make the  
- *  below data types arrays, or allocate them dynamically (using kmalloc()). 
- */ 
-
-/* 
- * This structure defines the hardware state of the graphics card. Normally
- * you place this in a header file in linux/include/video. This file usually
- * also includes register information. That allows other driver subsystems
- * and userland applications the ability to use the same header file to 
- * avoid duplicate work and easy porting of software. 
- */
-struct xxx_par;
-
-/*
- * Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo
- * if we don't use modedb. If we do use modedb see xxxfb_init how to use it
- * to get a fb_var_screeninfo. Otherwise define a default var as well. 
- */
-static struct fb_fix_screeninfo xxxfb_fix = {
-	.id =		"FB's name", 
-	.type =		FB_TYPE_PACKED_PIXELS,
-	.visual =	FB_VISUAL_PSEUDOCOLOR,
-	.xpanstep =	1,
-	.ypanstep =	1,
-	.ywrapstep =	1, 
-	.accel =	FB_ACCEL_NONE,
-};
-
-    /*
-     * 	Modern graphical hardware not only supports pipelines but some 
-     *  also support multiple monitors where each display can have its  
-     *  its own unique data. In this case each display could be  
-     *  represented by a separate framebuffer device thus a separate 
-     *  struct fb_info. Now the struct xxx_par represents the graphics
-     *  hardware state thus only one exist per card. In this case the 
-     *  struct xxx_par for each graphics card would be shared between 
-     *  every struct fb_info that represents a framebuffer on that card. 
-     *  This allows when one display changes it video resolution (info->var) 
-     *  the other displays know instantly. Each display can always be
-     *  aware of the entire hardware state that affects it because they share
-     *  the same xxx_par struct. The other side of the coin is multiple
-     *  graphics cards that pass data around until it is finally displayed
-     *  on one monitor. Such examples are the voodoo 1 cards and high end
-     *  NUMA graphics servers. For this case we have a bunch of pars, each
-     *  one that represents a graphics state, that belong to one struct 
-     *  fb_info. Their you would want to have *par point to a array of device
-     *  states and have each struct fb_ops function deal with all those 
-     *  states. I hope this covers every possible hardware design. If not
-     *  feel free to send your ideas at jsimmons@users.sf.net 
-     */
-
-    /*
-     *  If your driver supports multiple boards or it supports multiple 
-     *  framebuffers, you should make these arrays, or allocate them 
-     *  dynamically using framebuffer_alloc() and free them with
-     *  framebuffer_release().
-     */ 
-static struct fb_info info;
-
-    /* 
-     * Each one represents the state of the hardware. Most hardware have
-     * just one hardware state. These here represent the default state(s). 
-     */
-static struct xxx_par __initdata current_par;
-
-int xxxfb_init(void);
-
-/**
- *	xxxfb_open - Optional function. Called when the framebuffer is
- *		     first accessed.
- *	@info: frame buffer structure that represents a single frame buffer
- *	@user: tell us if the userland (value=1) or the console is accessing
- *	       the framebuffer. 
- *
- *	This function is the first function called in the framebuffer api.
- *	Usually you don't need to provide this function. The case where it 
- *	is used is to change from a text mode hardware state to a graphics
- * 	mode state. 
- *
- *	Returns negative errno on error, or zero on success.
- */
-static int xxxfb_open(struct fb_info *info, int user)
-{
-    return 0;
-}
-
-/**
- *	xxxfb_release - Optional function. Called when the framebuffer 
- *			device is closed. 
- *	@info: frame buffer structure that represents a single frame buffer
- *	@user: tell us if the userland (value=1) or the console is accessing
- *	       the framebuffer. 
- *	
- *	Thus function is called when we close /dev/fb or the framebuffer 
- *	console system is released. Usually you don't need this function.
- *	The case where it is usually used is to go from a graphics state
- *	to a text mode state.
- *
- *	Returns negative errno on error, or zero on success.
- */
-static int xxxfb_release(struct fb_info *info, int user)
-{
-    return 0;
-}
-
-/**
- *      xxxfb_check_var - Optional function. Validates a var passed in. 
- *      @var: frame buffer variable screen structure
- *      @info: frame buffer structure that represents a single frame buffer 
- *
- *	Checks to see if the hardware supports the state requested by
- *	var passed in. This function does not alter the hardware state!!! 
- *	This means the data stored in struct fb_info and struct xxx_par do 
- *      not change. This includes the var inside of struct fb_info. 
- *	Do NOT change these. This function can be called on its own if we
- *	intent to only test a mode and not actually set it. The stuff in 
- *	modedb.c is a example of this. If the var passed in is slightly 
- *	off by what the hardware can support then we alter the var PASSED in
- *	to what we can do.
- *
- *      For values that are off, this function must round them _up_ to the
- *      next value that is supported by the hardware.  If the value is
- *      greater than the highest value supported by the hardware, then this
- *      function must return -EINVAL.
- *
- *      Exception to the above rule:  Some drivers have a fixed mode, ie,
- *      the hardware is already set at boot up, and cannot be changed.  In
- *      this case, it is more acceptable that this function just return
- *      a copy of the currently working var (info->var). Better is to not
- *      implement this function, as the upper layer will do the copying
- *      of the current var for you.
- *
- *      Note:  This is the only function where the contents of var can be
- *      freely adjusted after the driver has been registered. If you find
- *      that you have code outside of this function that alters the content
- *      of var, then you are doing something wrong.  Note also that the
- *      contents of info->var must be left untouched at all times after
- *      driver registration.
- *
- *	Returns negative errno on error, or zero on success.
- */
-static int xxxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
-{
-    /* ... */
-    return 0;	   	
-}
-
-/**
- *      xxxfb_set_par - Optional function. Alters the hardware state.
- *      @info: frame buffer structure that represents a single frame buffer
- *
- *	Using the fb_var_screeninfo in fb_info we set the resolution of the
- *	this particular framebuffer. This function alters the par AND the
- *	fb_fix_screeninfo stored in fb_info. It doesn't not alter var in 
- *	fb_info since we are using that data. This means we depend on the
- *	data in var inside fb_info to be supported by the hardware. 
- *
- *      This function is also used to recover/restore the hardware to a
- *      known working state.
- *
- *	xxxfb_check_var is always called before xxxfb_set_par to ensure that
- *      the contents of var is always valid.
- *
- *	Again if you can't change the resolution you don't need this function.
- *
- *      However, even if your hardware does not support mode changing,
- *      a set_par might be needed to at least initialize the hardware to
- *      a known working state, especially if it came back from another
- *      process that also modifies the same hardware, such as X.
- *
- *      If this is the case, a combination such as the following should work:
- *
- *      static int xxxfb_check_var(struct fb_var_screeninfo *var,
- *                                struct fb_info *info)
- *      {
- *              *var = info->var;
- *              return 0;
- *      }
- *
- *      static int xxxfb_set_par(struct fb_info *info)
- *      {
- *              init your hardware here
- *      }
- *
- *	Returns negative errno on error, or zero on success.
- */
-static int xxxfb_set_par(struct fb_info *info)
-{
-    struct xxx_par *par = info->par;
-    /* ... */
-    return 0;	
-}
-
-/**
- *  	xxxfb_setcolreg - Optional function. Sets a color register.
- *      @regno: Which register in the CLUT we are programming 
- *      @red: The red value which can be up to 16 bits wide 
- *	@green: The green value which can be up to 16 bits wide 
- *	@blue:  The blue value which can be up to 16 bits wide.
- *	@transp: If supported, the alpha value which can be up to 16 bits wide.
- *      @info: frame buffer info structure
- * 
- *  	Set a single color register. The values supplied have a 16 bit
- *  	magnitude which needs to be scaled in this function for the hardware. 
- *	Things to take into consideration are how many color registers, if
- *	any, are supported with the current color visual. With truecolor mode
- *	no color palettes are supported. Here a pseudo palette is created
- *	which we store the value in pseudo_palette in struct fb_info. For
- *	pseudocolor mode we have a limited color palette. To deal with this
- *	we can program what color is displayed for a particular pixel value.
- *	DirectColor is similar in that we can program each color field. If
- *	we have a static colormap we don't need to implement this function. 
- * 
- *	Returns negative errno on error, or zero on success.
- */
-static int xxxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
-			   unsigned blue, unsigned transp,
-			   struct fb_info *info)
-{
-    if (regno >= 256)  /* no. of hw registers */
-       return -EINVAL;
-    /*
-     * Program hardware... do anything you want with transp
-     */
-
-    /* grayscale works only partially under directcolor */
-    if (info->var.grayscale) {
-       /* grayscale = 0.30*R + 0.59*G + 0.11*B */
-       red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
-    }
-
-    /* Directcolor:
-     *   var->{color}.offset contains start of bitfield
-     *   var->{color}.length contains length of bitfield
-     *   {hardwarespecific} contains width of DAC
-     *   pseudo_palette[X] is programmed to (X << red.offset) |
-     *                                      (X << green.offset) |
-     *                                      (X << blue.offset)
-     *   RAMDAC[X] is programmed to (red, green, blue)
-     *   color depth = SUM(var->{color}.length)
-     *
-     * Pseudocolor:
-     *    var->{color}.offset is 0 unless the palette index takes less than
-     *                        bits_per_pixel bits and is stored in the upper
-     *                        bits of the pixel value
-     *    var->{color}.length is set so that 1 << length is the number of
-     *                        available palette entries
-     *    pseudo_palette is not used
-     *    RAMDAC[X] is programmed to (red, green, blue)
-     *    color depth = var->{color}.length
-     *
-     * Static pseudocolor:
-     *    same as Pseudocolor, but the RAMDAC is not programmed (read-only)
-     *
-     * Mono01/Mono10:
-     *    Has only 2 values, black on white or white on black (fg on bg),
-     *    var->{color}.offset is 0
-     *    white = (1 << var->{color}.length) - 1, black = 0
-     *    pseudo_palette is not used
-     *    RAMDAC does not exist
-     *    color depth is always 2
-     *
-     * Truecolor:
-     *    does not use RAMDAC (usually has 3 of them).
-     *    var->{color}.offset contains start of bitfield
-     *    var->{color}.length contains length of bitfield
-     *    pseudo_palette is programmed to (red << red.offset) |
-     *                                    (green << green.offset) |
-     *                                    (blue << blue.offset) |
-     *                                    (transp << transp.offset)
-     *    RAMDAC does not exist
-     *    color depth = SUM(var->{color}.length})
-     *
-     *  The color depth is used by fbcon for choosing the logo and also
-     *  for color palette transformation if color depth < 4
-     *
-     *  As can be seen from the above, the field bits_per_pixel is _NOT_
-     *  a criteria for describing the color visual.
-     *
-     *  A common mistake is assuming that bits_per_pixel <= 8 is pseudocolor,
-     *  and higher than that, true/directcolor.  This is incorrect, one needs
-     *  to look at the fix->visual.
-     *
-     *  Another common mistake is using bits_per_pixel to calculate the color
-     *  depth.  The bits_per_pixel field does not directly translate to color
-     *  depth. You have to compute for the color depth (using the color
-     *  bitfields) and fix->visual as seen above.
-     */
-
-    /*
-     * This is the point where the color is converted to something that
-     * is acceptable by the hardware.
-     */
-#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
-    red = CNVT_TOHW(red, info->var.red.length);
-    green = CNVT_TOHW(green, info->var.green.length);
-    blue = CNVT_TOHW(blue, info->var.blue.length);
-    transp = CNVT_TOHW(transp, info->var.transp.length);
-#undef CNVT_TOHW
-    /*
-     * This is the point where the function feeds the color to the hardware
-     * palette after converting the colors to something acceptable by
-     * the hardware. Note, only FB_VISUAL_DIRECTCOLOR and
-     * FB_VISUAL_PSEUDOCOLOR visuals need to write to the hardware palette.
-     * If you have code that writes to the hardware CLUT, and it's not
-     * any of the above visuals, then you are doing something wrong.
-     */
-    if (info->fix.visual == FB_VISUAL_DIRECTCOLOR ||
-	info->fix.visual == FB_VISUAL_TRUECOLOR)
-	    write_{red|green|blue|transp}_to_clut();
-
-    /* This is the point were you need to fill up the contents of
-     * info->pseudo_palette. This structure is used _only_ by fbcon, thus
-     * it only contains 16 entries to match the number of colors supported
-     * by the console. The pseudo_palette is used only if the visual is
-     * in directcolor or truecolor mode.  With other visuals, the
-     * pseudo_palette is not used. (This might change in the future.)
-     *
-     * The contents of the pseudo_palette is in raw pixel format.  Ie, each
-     * entry can be written directly to the framebuffer without any conversion.
-     * The pseudo_palette is (void *).  However, if using the generic
-     * drawing functions (cfb_imageblit, cfb_fillrect), the pseudo_palette
-     * must be casted to (u32 *) _regardless_ of the bits per pixel. If the
-     * driver is using its own drawing functions, then it can use whatever
-     * size it wants.
-     */
-    if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
-	info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
-	    u32 v;
-
-	    if (regno >= 16)
-		    return -EINVAL;
-
-	    v = (red << info->var.red.offset) |
-		    (green << info->var.green.offset) |
-		    (blue << info->var.blue.offset) |
-		    (transp << info->var.transp.offset);
-
-	    ((u32*)(info->pseudo_palette))[regno] = v;
-    }
-
-    /* ... */
-    return 0;
-}
-
-/**
- *      xxxfb_pan_display - NOT a required function. Pans the display.
- *      @var: frame buffer variable screen structure
- *      @info: frame buffer structure that represents a single frame buffer
- *
- *	Pan (or wrap, depending on the `vmode' field) the display using the
- *  	`xoffset' and `yoffset' fields of the `var' structure.
- *  	If the values don't fit, return -EINVAL.
- *
- *      Returns negative errno on error, or zero on success.
- */
-static int xxxfb_pan_display(struct fb_var_screeninfo *var,
-			     struct fb_info *info)
-{
-    /*
-     * If your hardware does not support panning, _do_ _not_ implement this
-     * function. Creating a dummy function will just confuse user apps.
-     */
-
-    /*
-     * Note that even if this function is fully functional, a setting of
-     * 0 in both xpanstep and ypanstep means that this function will never
-     * get called.
-     */
-
-    /* ... */
-    return 0;
-}
-
-/**
- *      xxxfb_blank - NOT a required function. Blanks the display.
- *      @blank_mode: the blank mode we want. 
- *      @info: frame buffer structure that represents a single frame buffer
- *
- *      Blank the screen if blank_mode != FB_BLANK_UNBLANK, else unblank.
- *      Return 0 if blanking succeeded, != 0 if un-/blanking failed due to
- *      e.g. a video mode which doesn't support it.
- *
- *      Implements VESA suspend and powerdown modes on hardware that supports
- *      disabling hsync/vsync:
- *
- *      FB_BLANK_NORMAL = display is blanked, syncs are on.
- *      FB_BLANK_HSYNC_SUSPEND = hsync off
- *      FB_BLANK_VSYNC_SUSPEND = vsync off
- *      FB_BLANK_POWERDOWN =  hsync and vsync off
- *
- *      If implementing this function, at least support FB_BLANK_UNBLANK.
- *      Return !0 for any modes that are unimplemented.
- *
- */
-static int xxxfb_blank(int blank_mode, struct fb_info *info)
-{
-    /* ... */
-    return 0;
-}
-
-/* ------------ Accelerated Functions --------------------- */
-
-/*
- * We provide our own functions if we have hardware acceleration
- * or non packed pixel format layouts. If we have no hardware 
- * acceleration, we can use a generic unaccelerated function. If using
- * a pack pixel format just use the functions in cfb_*.c. Each file 
- * has one of the three different accel functions we support.
- */
-
-/**
- *      xxxfb_fillrect - REQUIRED function. Can use generic routines if 
- *		 	 non acclerated hardware and packed pixel based.
- *			 Draws a rectangle on the screen.		
- *
- *      @info: frame buffer structure that represents a single frame buffer
- *	@region: The structure representing the rectangular region we 
- *		 wish to draw to.
- *
- *	This drawing operation places/removes a retangle on the screen 
- *	depending on the rastering operation with the value of color which
- *	is in the current color depth format.
- */
-void xxxfb_fillrect(struct fb_info *p, const struct fb_fillrect *region)
-{
-/*	Meaning of struct fb_fillrect
- *
- *	@dx: The x and y corrdinates of the upper left hand corner of the 
- *	@dy: area we want to draw to. 
- *	@width: How wide the rectangle is we want to draw.
- *	@height: How tall the rectangle is we want to draw.
- *	@color:	The color to fill in the rectangle with. 
- *	@rop: The raster operation. We can draw the rectangle with a COPY
- *	      of XOR which provides erasing effect. 
- */
-}
-
-/**
- *      xxxfb_copyarea - REQUIRED function. Can use generic routines if
- *                       non acclerated hardware and packed pixel based.
- *                       Copies one area of the screen to another area.
- *
- *      @info: frame buffer structure that represents a single frame buffer
- *      @area: Structure providing the data to copy the framebuffer contents
- *	       from one region to another.
- *
- *      This drawing operation copies a rectangular area from one area of the
- *	screen to another area.
- */
-void xxxfb_copyarea(struct fb_info *p, const struct fb_copyarea *area) 
-{
-/*
- *      @dx: The x and y coordinates of the upper left hand corner of the
- *	@dy: destination area on the screen.
- *      @width: How wide the rectangle is we want to copy.
- *      @height: How tall the rectangle is we want to copy.
- *      @sx: The x and y coordinates of the upper left hand corner of the
- *      @sy: source area on the screen.
- */
-}
-
-
-/**
- *      xxxfb_imageblit - REQUIRED function. Can use generic routines if
- *                        non acclerated hardware and packed pixel based.
- *                        Copies a image from system memory to the screen. 
- *
- *      @info: frame buffer structure that represents a single frame buffer
- *	@image:	structure defining the image.
- *
- *      This drawing operation draws a image on the screen. It can be a 
- *	mono image (needed for font handling) or a color image (needed for
- *	tux). 
- */
-void xxxfb_imageblit(struct fb_info *p, const struct fb_image *image) 
-{
-/*
- *      @dx: The x and y coordinates of the upper left hand corner of the
- *	@dy: destination area to place the image on the screen.
- *      @width: How wide the image is we want to copy.
- *      @height: How tall the image is we want to copy.
- *      @fg_color: For mono bitmap images this is color data for     
- *      @bg_color: the foreground and background of the image to
- *		   write directly to the frmaebuffer.
- *	@depth:	How many bits represent a single pixel for this image.
- *	@data: The actual data used to construct the image on the display.
- *	@cmap: The colormap used for color images.   
- */
-
-/*
- * The generic function, cfb_imageblit, expects that the bitmap scanlines are
- * padded to the next byte.  Most hardware accelerators may require padding to
- * the next u16 or the next u32.  If that is the case, the driver can specify
- * this by setting info->pixmap.scan_align = 2 or 4.  See a more
- * comprehensive description of the pixmap below.
- */
-}
-
-/**
- *	xxxfb_cursor - 	OPTIONAL. If your hardware lacks support
- *			for a cursor, leave this field NULL.
- *
- *      @info: frame buffer structure that represents a single frame buffer
- *	@cursor: structure defining the cursor to draw.
- *
- *      This operation is used to set or alter the properities of the
- *	cursor.
- *
- *	Returns negative errno on error, or zero on success.
- */
-int xxxfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
-{
-/*
- *      @set: 	Which fields we are altering in struct fb_cursor 
- *	@enable: Disable or enable the cursor 
- *      @rop: 	The bit operation we want to do. 
- *      @mask:  This is the cursor mask bitmap. 
- *      @dest:  A image of the area we are going to display the cursor.
- *		Used internally by the driver.	 
- *      @hot:	The hot spot. 
- *	@image:	The actual data for the cursor image.
- *
- *      NOTES ON FLAGS (cursor->set):
- *
- *      FB_CUR_SETIMAGE - the cursor image has changed (cursor->image.data)
- *      FB_CUR_SETPOS   - the cursor position has changed (cursor->image.dx|dy)
- *      FB_CUR_SETHOT   - the cursor hot spot has changed (cursor->hot.dx|dy)
- *      FB_CUR_SETCMAP  - the cursor colors has changed (cursor->fg_color|bg_color)
- *      FB_CUR_SETSHAPE - the cursor bitmask has changed (cursor->mask)
- *      FB_CUR_SETSIZE  - the cursor size has changed (cursor->width|height)
- *      FB_CUR_SETALL   - everything has changed
- *
- *      NOTES ON ROPs (cursor->rop, Raster Operation)
- *
- *      ROP_XOR         - cursor->image.data XOR cursor->mask
- *      ROP_COPY        - curosr->image.data AND cursor->mask
- *
- *      OTHER NOTES:
- *
- *      - fbcon only supports a 2-color cursor (cursor->image.depth = 1)
- *      - The fb_cursor structure, @cursor, _will_ always contain valid
- *        fields, whether any particular bitfields in cursor->set is set
- *        or not.
- */
-}
-
-/**
- *	xxxfb_rotate -  NOT a required function. If your hardware
- *			supports rotation the whole screen then 
- *			you would provide a hook for this. 
- *
- *      @info: frame buffer structure that represents a single frame buffer
- *	@angle: The angle we rotate the screen.   
- *
- *      This operation is used to set or alter the properities of the
- *	cursor.
- */
-void xxxfb_rotate(struct fb_info *info, int angle)
-{
-/* Will be deprecated */
-}
-
-/**
- *	xxxfb_sync - NOT a required function. Normally the accel engine 
- *		     for a graphics card take a specific amount of time.
- *		     Often we have to wait for the accelerator to finish
- *		     its operation before we can write to the framebuffer
- *		     so we can have consistent display output. 
- *
- *      @info: frame buffer structure that represents a single frame buffer
- *
- *      If the driver has implemented its own hardware-based drawing function,
- *      implementing this function is highly recommended.
- */
-int xxxfb_sync(struct fb_info *info)
-{
-	return 0;
-}
-
-    /*
-     *  Frame buffer operations
-     */
-
-static struct fb_ops xxxfb_ops = {
-	.owner		= THIS_MODULE,
-	.fb_open	= xxxfb_open,
-	.fb_read	= xxxfb_read,
-	.fb_write	= xxxfb_write,
-	.fb_release	= xxxfb_release,
-	.fb_check_var	= xxxfb_check_var,
-	.fb_set_par	= xxxfb_set_par,
-	.fb_setcolreg	= xxxfb_setcolreg,
-	.fb_blank	= xxxfb_blank,
-	.fb_pan_display	= xxxfb_pan_display,
-	.fb_fillrect	= xxxfb_fillrect, 	/* Needed !!! */
-	.fb_copyarea	= xxxfb_copyarea,	/* Needed !!! */
-	.fb_imageblit	= xxxfb_imageblit,	/* Needed !!! */
-	.fb_cursor	= xxxfb_cursor,		/* Optional !!! */
-	.fb_rotate	= xxxfb_rotate,
-	.fb_sync	= xxxfb_sync,
-	.fb_ioctl	= xxxfb_ioctl,
-	.fb_mmap	= xxxfb_mmap,
-};
-
-/* ------------------------------------------------------------------------- */
-
-    /*
-     *  Initialization
-     */
-
-/* static int __init xxfb_probe (struct platform_device *pdev) -- for platform devs */
-static int xxxfb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
-{
-    struct fb_info *info;
-    struct xxx_par *par;
-    struct device *device = &dev->dev; /* or &pdev->dev */
-    int cmap_len, retval;	
-   
-    /*
-     * Dynamically allocate info and par
-     */
-    info = framebuffer_alloc(sizeof(struct xxx_par), device);
-
-    if (!info) {
-	    /* goto error path */
-    }
-
-    par = info->par;
-
-    /* 
-     * Here we set the screen_base to the virtual memory address
-     * for the framebuffer. Usually we obtain the resource address
-     * from the bus layer and then translate it to virtual memory
-     * space via ioremap. Consult ioport.h. 
-     */
-    info->screen_base = framebuffer_virtual_memory;
-    info->fbops = &xxxfb_ops;
-    info->fix = xxxfb_fix;
-    info->pseudo_palette = pseudo_palette; /* The pseudopalette is an
-					    * 16-member array
-					    */
-    /*
-     * Set up flags to indicate what sort of acceleration your
-     * driver can provide (pan/wrap/copyarea/etc.) and whether it
-     * is a module -- see FBINFO_* in include/linux/fb.h
-     *
-     * If your hardware can support any of the hardware accelerated functions
-     * fbcon performance will improve if info->flags is set properly.
-     *
-     * FBINFO_HWACCEL_COPYAREA - hardware moves
-     * FBINFO_HWACCEL_FILLRECT - hardware fills
-     * FBINFO_HWACCEL_IMAGEBLIT - hardware mono->color expansion
-     * FBINFO_HWACCEL_YPAN - hardware can pan display in y-axis
-     * FBINFO_HWACCEL_YWRAP - hardware can wrap display in y-axis
-     * FBINFO_HWACCEL_DISABLED - supports hardware accels, but disabled
-     * FBINFO_READS_FAST - if set, prefer moves over mono->color expansion
-     * FBINFO_MISC_TILEBLITTING - hardware can do tile blits
-     *
-     * NOTE: These are for fbcon use only.
-     */
-    info->flags = FBINFO_DEFAULT;
-
-/********************* This stage is optional ******************************/
-     /*
-     * The struct pixmap is a scratch pad for the drawing functions. This
-     * is where the monochrome bitmap is constructed by the higher layers
-     * and then passed to the accelerator.  For drivers that uses
-     * cfb_imageblit, you can skip this part.  For those that have a more
-     * rigorous requirement, this stage is needed
-     */
-
-    /* PIXMAP_SIZE should be small enough to optimize drawing, but not
-     * large enough that memory is wasted.  A safe size is
-     * (max_xres * max_font_height/8). max_xres is driver dependent,
-     * max_font_height is 32.
-     */
-    info->pixmap.addr = kmalloc(PIXMAP_SIZE, GFP_KERNEL);
-    if (!info->pixmap.addr) {
-	    /* goto error */
-    }
-
-    info->pixmap.size = PIXMAP_SIZE;
-
-    /*
-     * FB_PIXMAP_SYSTEM - memory is in system ram
-     * FB_PIXMAP_IO     - memory is iomapped
-     * FB_PIXMAP_SYNC   - if set, will call fb_sync() per access to pixmap,
-     *                    usually if FB_PIXMAP_IO is set.
-     *
-     * Currently, FB_PIXMAP_IO is unimplemented.
-     */
-    info->pixmap.flags = FB_PIXMAP_SYSTEM;
-
-    /*
-     * scan_align is the number of padding for each scanline.  It is in bytes.
-     * Thus for accelerators that need padding to the next u32, put 4 here.
-     */
-    info->pixmap.scan_align = 4;
-
-    /*
-     * buf_align is the amount to be padded for the buffer. For example,
-     * the i810fb needs a scan_align of 2 but expects it to be fed with
-     * dwords, so a buf_align = 4 is required.
-     */
-    info->pixmap.buf_align = 4;
-
-    /* access_align is how many bits can be accessed from the framebuffer
-     * ie. some epson cards allow 16-bit access only.  Most drivers will
-     * be safe with u32 here.
-     *
-     * NOTE: This field is currently unused.
-     */
-    info->pixmap.access_align = 32;
-/***************************** End optional stage ***************************/
-
-    /*
-     * This should give a reasonable default video mode. The following is
-     * done when we can set a video mode. 
-     */
-    if (!mode_option)
-	mode_option = "640x480@60";	 	
-
-    retval = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8);
-  
-    if (!retval || retval == 4)
-	return -EINVAL;			
-
-    /* This has to be done! */
-    if (fb_alloc_cmap(&info->cmap, cmap_len, 0))
-	return -ENOMEM;
-	
-    /* 
-     * The following is done in the case of having hardware with a static 
-     * mode. If we are setting the mode ourselves we don't call this. 
-     */	
-    info->var = xxxfb_var;
-
-    /*
-     * For drivers that can...
-     */
-    xxxfb_check_var(&info->var, info);
-
-    /*
-     * Does a call to fb_set_par() before register_framebuffer needed?  This
-     * will depend on you and the hardware.  If you are sure that your driver
-     * is the only device in the system, a call to fb_set_par() is safe.
-     *
-     * Hardware in x86 systems has a VGA core.  Calling set_par() at this
-     * point will corrupt the VGA console, so it might be safer to skip a
-     * call to set_par here and just allow fbcon to do it for you.
-     */
-    /* xxxfb_set_par(info); */
-
-    if (register_framebuffer(info) < 0) {
-	fb_dealloc_cmap(&info->cmap);
-	return -EINVAL;
-    }
-    fb_info(info, "%s frame buffer device\n", info->fix.id);
-    pci_set_drvdata(dev, info); /* or platform_set_drvdata(pdev, info) */
-    return 0;
-}
-
-    /*
-     *  Cleanup
-     */
-/* static void xxxfb_remove(struct platform_device *pdev) */
-static void xxxfb_remove(struct pci_dev *dev)
-{
-	struct fb_info *info = pci_get_drvdata(dev);
-	/* or platform_get_drvdata(pdev); */
-
-	if (info) {
-		unregister_framebuffer(info);
-		fb_dealloc_cmap(&info->cmap);
-		/* ... */
-		framebuffer_release(info);
-	}
-}
-
-#ifdef CONFIG_PCI
-#ifdef CONFIG_PM
-/**
- *	xxxfb_suspend - Optional but recommended function. Suspend the device.
- *	@dev: PCI device
- *	@msg: the suspend event code.
- *
- *      See Documentation/power/devices.txt for more information
- */
-static int xxxfb_suspend(struct pci_dev *dev, pm_message_t msg)
-{
-	struct fb_info *info = pci_get_drvdata(dev);
-	struct xxxfb_par *par = info->par;
-
-	/* suspend here */
-	return 0;
-}
-
-/**
- *	xxxfb_resume - Optional but recommended function. Resume the device.
- *	@dev: PCI device
- *
- *      See Documentation/power/devices.txt for more information
- */
-static int xxxfb_resume(struct pci_dev *dev)
-{
-	struct fb_info *info = pci_get_drvdata(dev);
-	struct xxxfb_par *par = info->par;
-
-	/* resume here */
-	return 0;
-}
-#else
-#define xxxfb_suspend NULL
-#define xxxfb_resume NULL
-#endif /* CONFIG_PM */
-
-static struct pci_device_id xxxfb_id_table[] = {
-	{ PCI_VENDOR_ID_XXX, PCI_DEVICE_ID_XXX,
-	  PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
-	  PCI_CLASS_MASK, 0 },
-	{ 0, }
-};
-
-/* For PCI drivers */
-static struct pci_driver xxxfb_driver = {
-	.name =		"xxxfb",
-	.id_table =	xxxfb_id_table,
-	.probe =	xxxfb_probe,
-	.remove =	xxxfb_remove,
-	.suspend =      xxxfb_suspend, /* optional but recommended */
-	.resume =       xxxfb_resume,  /* optional but recommended */
-};
-
-MODULE_DEVICE_TABLE(pci, xxxfb_id_table);
-
-int __init xxxfb_init(void)
-{
-	/*
-	 *  For kernel boot options (in 'video=xxxfb:<options>' format)
-	 */
-#ifndef MODULE
-	char *option = NULL;
-
-	if (fb_get_options("xxxfb", &option))
-		return -ENODEV;
-	xxxfb_setup(option);
-#endif
-
-	return pci_register_driver(&xxxfb_driver);
-}
-
-static void __exit xxxfb_exit(void)
-{
-	pci_unregister_driver(&xxxfb_driver);
-}
-#else /* non PCI, platform drivers */
-#include <linux/platform_device.h>
-/* for platform devices */
-
-#ifdef CONFIG_PM
-/**
- *	xxxfb_suspend - Optional but recommended function. Suspend the device.
- *	@dev: platform device
- *	@msg: the suspend event code.
- *
- *      See Documentation/power/devices.txt for more information
- */
-static int xxxfb_suspend(struct platform_device *dev, pm_message_t msg)
-{
-	struct fb_info *info = platform_get_drvdata(dev);
-	struct xxxfb_par *par = info->par;
-
-	/* suspend here */
-	return 0;
-}
-
-/**
- *	xxxfb_resume - Optional but recommended function. Resume the device.
- *	@dev: platform device
- *
- *      See Documentation/power/devices.txt for more information
- */
-static int xxxfb_resume(struct platform_dev *dev)
-{
-	struct fb_info *info = platform_get_drvdata(dev);
-	struct xxxfb_par *par = info->par;
-
-	/* resume here */
-	return 0;
-}
-#else
-#define xxxfb_suspend NULL
-#define xxxfb_resume NULL
-#endif /* CONFIG_PM */
-
-static struct platform_device_driver xxxfb_driver = {
-	.probe = xxxfb_probe,
-	.remove = xxxfb_remove,
-	.suspend = xxxfb_suspend, /* optional but recommended */
-	.resume = xxxfb_resume,   /* optional but recommended */
-	.driver = {
-		.name = "xxxfb",
-	},
-};
-
-static struct platform_device *xxxfb_device;
-
-#ifndef MODULE
-    /*
-     *  Setup
-     */
-
-/*
- * Only necessary if your driver takes special options,
- * otherwise we fall back on the generic fb_setup().
- */
-int __init xxxfb_setup(char *options)
-{
-    /* Parse user specified options (`video=xxxfb:') */
-}
-#endif /* MODULE */
-
-static int __init xxxfb_init(void)
-{
-	int ret;
-	/*
-	 *  For kernel boot options (in 'video=xxxfb:<options>' format)
-	 */
-#ifndef MODULE
-	char *option = NULL;
-
-	if (fb_get_options("xxxfb", &option))
-		return -ENODEV;
-	xxxfb_setup(option);
-#endif
-	ret = platform_driver_register(&xxxfb_driver);
-
-	if (!ret) {
-		xxxfb_device = platform_device_register_simple("xxxfb", 0,
-								NULL, 0);
-
-		if (IS_ERR(xxxfb_device)) {
-			platform_driver_unregister(&xxxfb_driver);
-			ret = PTR_ERR(xxxfb_device);
-		}
-	}
-
-	return ret;
-}
-
-static void __exit xxxfb_exit(void)
-{
-	platform_device_unregister(xxxfb_device);
-	platform_driver_unregister(&xxxfb_driver);
-}
-#endif /* CONFIG_PCI */
-
-/* ------------------------------------------------------------------------- */
-
-
-    /*
-     *  Modularization
-     */
-
-module_init(xxxfb_init);
-module_exit(xxxfb_exit);
-
-MODULE_LICENSE("GPL");