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-rw-r--r--Documentation/fb/00-INDEX69
-rw-r--r--Documentation/fb/api.txt306
-rw-r--r--Documentation/fb/arkfb.txt68
-rw-r--r--Documentation/fb/aty128fb.txt72
-rw-r--r--Documentation/fb/cirrusfb.txt97
-rw-r--r--Documentation/fb/cmap_xfbdev.txt53
-rw-r--r--Documentation/fb/deferred_io.txt75
-rw-r--r--Documentation/fb/efifb.txt31
-rw-r--r--Documentation/fb/ep93xx-fb.txt135
-rw-r--r--Documentation/fb/fbcon.txt324
-rw-r--r--Documentation/fb/framebuffer.txt343
-rw-r--r--Documentation/fb/gxfb.txt52
-rw-r--r--Documentation/fb/intel810.txt278
-rw-r--r--Documentation/fb/intelfb.txt149
-rw-r--r--Documentation/fb/internals.txt82
-rw-r--r--Documentation/fb/lxfb.txt52
-rw-r--r--Documentation/fb/matroxfb.txt413
-rw-r--r--Documentation/fb/metronomefb.txt36
-rw-r--r--Documentation/fb/modedb.txt151
-rw-r--r--Documentation/fb/pvr2fb.txt65
-rw-r--r--Documentation/fb/pxafb.txt142
-rw-r--r--Documentation/fb/s3fb.txt82
-rw-r--r--Documentation/fb/sa1100fb.txt39
-rw-r--r--Documentation/fb/sh7760fb.txt131
-rw-r--r--Documentation/fb/sisfb.txt158
-rw-r--r--Documentation/fb/sm501.txt10
-rw-r--r--Documentation/fb/sstfb.txt174
-rw-r--r--Documentation/fb/tgafb.txt69
-rw-r--r--Documentation/fb/tridentfb.txt70
-rw-r--r--Documentation/fb/udlfb.txt159
-rw-r--r--Documentation/fb/uvesafb.txt189
-rw-r--r--Documentation/fb/vesafb.txt181
-rw-r--r--Documentation/fb/viafb.modes870
-rw-r--r--Documentation/fb/viafb.txt252
-rw-r--r--Documentation/fb/vt8623fb.txt64
35 files changed, 5441 insertions, 0 deletions
diff --git a/Documentation/fb/00-INDEX b/Documentation/fb/00-INDEX
new file mode 100644
index 00000000..30a70542
--- /dev/null
+++ b/Documentation/fb/00-INDEX
@@ -0,0 +1,69 @@
+Index of files in Documentation/fb. If you think something about frame
+buffer devices needs an entry here, needs correction or you've written one
+please mail me.
+ Geert Uytterhoeven <geert@linux-m68k.org>
+
+00-INDEX
+ - this file.
+arkfb.txt
+ - info on the fbdev driver for ARK Logic chips.
+aty128fb.txt
+ - info on the ATI Rage128 frame buffer driver.
+cirrusfb.txt
+ - info on the driver for Cirrus Logic chipsets.
+cmap_xfbdev.txt
+ - an introduction to fbdev's cmap structures.
+deferred_io.txt
+ - an introduction to deferred IO.
+efifb.txt
+ - info on the EFI platform driver for Intel based Apple computers.
+ep93xx-fb.txt
+ - info on the driver for EP93xx LCD controller.
+fbcon.txt
+ - intro to and usage guide for the framebuffer console (fbcon).
+framebuffer.txt
+ - introduction to frame buffer devices.
+gxfb.txt
+ - info on the framebuffer driver for AMD Geode GX2 based processors.
+intel810.txt
+ - documentation for the Intel 810/815 framebuffer driver.
+intelfb.txt
+ - docs for Intel 830M/845G/852GM/855GM/865G/915G/945G fb driver.
+internals.txt
+ - quick overview of frame buffer device internals.
+lxfb.txt
+ - info on the framebuffer driver for AMD Geode LX based processors.
+matroxfb.txt
+ - info on the Matrox framebuffer driver for Alpha, Intel and PPC.
+metronomefb.txt
+ - info on the driver for the Metronome display controller.
+modedb.txt
+ - info on the video mode database.
+pvr2fb.txt
+ - info on the PowerVR 2 frame buffer driver.
+pxafb.txt
+ - info on the driver for the PXA25x LCD controller.
+s3fb.txt
+ - info on the fbdev driver for S3 Trio/Virge chips.
+sa1100fb.txt
+ - information about the driver for the SA-1100 LCD controller.
+sh7760fb.txt
+ - info on the SH7760/SH7763 integrated LCDC Framebuffer driver.
+sisfb.txt
+ - info on the framebuffer device driver for various SiS chips.
+sstfb.txt
+ - info on the frame buffer driver for 3dfx' Voodoo Graphics boards.
+tgafb.txt
+ - info on the TGA (DECChip 21030) frame buffer driver.
+tridentfb.txt
+ info on the framebuffer driver for some Trident chip based cards.
+uvesafb.txt
+ - info on the userspace VESA (VBE2+ compliant) frame buffer device.
+vesafb.txt
+ - info on the VESA frame buffer device.
+viafb.modes
+ - list of modes for VIA Integration Graphic Chip.
+viafb.txt
+ - info on the VIA Integration Graphic Chip console framebuffer driver.
+vt8623fb.txt
+ - info on the fb driver for the graphics core in VIA VT8623 chipsets.
diff --git a/Documentation/fb/api.txt b/Documentation/fb/api.txt
new file mode 100644
index 00000000..d4ff7de8
--- /dev/null
+++ b/Documentation/fb/api.txt
@@ -0,0 +1,306 @@
+ The Frame Buffer Device API
+ ---------------------------
+
+Last revised: June 21, 2011
+
+
+0. Introduction
+---------------
+
+This document describes the frame buffer API used by applications to interact
+with frame buffer devices. In-kernel APIs between device drivers and the frame
+buffer core are not described.
+
+Due to a lack of documentation in the original frame buffer API, drivers
+behaviours differ in subtle (and not so subtle) ways. This document describes
+the recommended API implementation, but applications should be prepared to
+deal with different behaviours.
+
+
+1. Capabilities
+---------------
+
+Device and driver capabilities are reported in the fixed screen information
+capabilities field.
+
+struct fb_fix_screeninfo {
+ ...
+ __u16 capabilities; /* see FB_CAP_* */
+ ...
+};
+
+Application should use those capabilities to find out what features they can
+expect from the device and driver.
+
+- FB_CAP_FOURCC
+
+The driver supports the four character code (FOURCC) based format setting API.
+When supported, formats are configured using a FOURCC instead of manually
+specifying color components layout.
+
+
+2. Types and visuals
+--------------------
+
+Pixels are stored in memory in hardware-dependent formats. Applications need
+to be aware of the pixel storage format in order to write image data to the
+frame buffer memory in the format expected by the hardware.
+
+Formats are described by frame buffer types and visuals. Some visuals require
+additional information, which are stored in the variable screen information
+bits_per_pixel, grayscale, red, green, blue and transp fields.
+
+Visuals describe how color information is encoded and assembled to create
+macropixels. Types describe how macropixels are stored in memory. The following
+types and visuals are supported.
+
+- FB_TYPE_PACKED_PIXELS
+
+Macropixels are stored contiguously in a single plane. If the number of bits
+per macropixel is not a multiple of 8, whether macropixels are padded to the
+next multiple of 8 bits or packed together into bytes depends on the visual.
+
+Padding at end of lines may be present and is then reported through the fixed
+screen information line_length field.
+
+- FB_TYPE_PLANES
+
+Macropixels are split across multiple planes. The number of planes is equal to
+the number of bits per macropixel, with plane i'th storing i'th bit from all
+macropixels.
+
+Planes are located contiguously in memory.
+
+- FB_TYPE_INTERLEAVED_PLANES
+
+Macropixels are split across multiple planes. The number of planes is equal to
+the number of bits per macropixel, with plane i'th storing i'th bit from all
+macropixels.
+
+Planes are interleaved in memory. The interleave factor, defined as the
+distance in bytes between the beginning of two consecutive interleaved blocks
+belonging to different planes, is stored in the fixed screen information
+type_aux field.
+
+- FB_TYPE_FOURCC
+
+Macropixels are stored in memory as described by the format FOURCC identifier
+stored in the variable screen information grayscale field.
+
+- FB_VISUAL_MONO01
+
+Pixels are black or white and stored on a number of bits (typically one)
+specified by the variable screen information bpp field.
+
+Black pixels are represented by all bits set to 1 and white pixels by all bits
+set to 0. When the number of bits per pixel is smaller than 8, several pixels
+are packed together in a byte.
+
+FB_VISUAL_MONO01 is currently used with FB_TYPE_PACKED_PIXELS only.
+
+- FB_VISUAL_MONO10
+
+Pixels are black or white and stored on a number of bits (typically one)
+specified by the variable screen information bpp field.
+
+Black pixels are represented by all bits set to 0 and white pixels by all bits
+set to 1. When the number of bits per pixel is smaller than 8, several pixels
+are packed together in a byte.
+
+FB_VISUAL_MONO01 is currently used with FB_TYPE_PACKED_PIXELS only.
+
+- FB_VISUAL_TRUECOLOR
+
+Pixels are broken into red, green and blue components, and each component
+indexes a read-only lookup table for the corresponding value. Lookup tables
+are device-dependent, and provide linear or non-linear ramps.
+
+Each component is stored in a macropixel according to the variable screen
+information red, green, blue and transp fields.
+
+- FB_VISUAL_PSEUDOCOLOR and FB_VISUAL_STATIC_PSEUDOCOLOR
+
+Pixel values are encoded as indices into a colormap that stores red, green and
+blue components. The colormap is read-only for FB_VISUAL_STATIC_PSEUDOCOLOR
+and read-write for FB_VISUAL_PSEUDOCOLOR.
+
+Each pixel value is stored in the number of bits reported by the variable
+screen information bits_per_pixel field.
+
+- FB_VISUAL_DIRECTCOLOR
+
+Pixels are broken into red, green and blue components, and each component
+indexes a programmable lookup table for the corresponding value.
+
+Each component is stored in a macropixel according to the variable screen
+information red, green, blue and transp fields.
+
+- FB_VISUAL_FOURCC
+
+Pixels are encoded and interpreted as described by the format FOURCC
+identifier stored in the variable screen information grayscale field.
+
+
+3. Screen information
+---------------------
+
+Screen information are queried by applications using the FBIOGET_FSCREENINFO
+and FBIOGET_VSCREENINFO ioctls. Those ioctls take a pointer to a
+fb_fix_screeninfo and fb_var_screeninfo structure respectively.
+
+struct fb_fix_screeninfo stores device independent unchangeable information
+about the frame buffer device and the current format. Those information can't
+be directly modified by applications, but can be changed by the driver when an
+application modifies the format.
+
+struct fb_fix_screeninfo {
+ char id[16]; /* identification string eg "TT Builtin" */
+ unsigned long smem_start; /* Start of frame buffer mem */
+ /* (physical address) */
+ __u32 smem_len; /* Length of frame buffer mem */
+ __u32 type; /* see FB_TYPE_* */
+ __u32 type_aux; /* Interleave for interleaved Planes */
+ __u32 visual; /* see FB_VISUAL_* */
+ __u16 xpanstep; /* zero if no hardware panning */
+ __u16 ypanstep; /* zero if no hardware panning */
+ __u16 ywrapstep; /* zero if no hardware ywrap */
+ __u32 line_length; /* length of a line in bytes */
+ unsigned long mmio_start; /* Start of Memory Mapped I/O */
+ /* (physical address) */
+ __u32 mmio_len; /* Length of Memory Mapped I/O */
+ __u32 accel; /* Indicate to driver which */
+ /* specific chip/card we have */
+ __u16 capabilities; /* see FB_CAP_* */
+ __u16 reserved[2]; /* Reserved for future compatibility */
+};
+
+struct fb_var_screeninfo stores device independent changeable information
+about a frame buffer device, its current format and video mode, as well as
+other miscellaneous parameters.
+
+struct fb_var_screeninfo {
+ __u32 xres; /* visible resolution */
+ __u32 yres;
+ __u32 xres_virtual; /* virtual resolution */
+ __u32 yres_virtual;
+ __u32 xoffset; /* offset from virtual to visible */
+ __u32 yoffset; /* resolution */
+
+ __u32 bits_per_pixel; /* guess what */
+ __u32 grayscale; /* 0 = color, 1 = grayscale, */
+ /* >1 = FOURCC */
+ struct fb_bitfield red; /* bitfield in fb mem if true color, */
+ struct fb_bitfield green; /* else only length is significant */
+ struct fb_bitfield blue;
+ struct fb_bitfield transp; /* transparency */
+
+ __u32 nonstd; /* != 0 Non standard pixel format */
+
+ __u32 activate; /* see FB_ACTIVATE_* */
+
+ __u32 height; /* height of picture in mm */
+ __u32 width; /* width of picture in mm */
+
+ __u32 accel_flags; /* (OBSOLETE) see fb_info.flags */
+
+ /* Timing: All values in pixclocks, except pixclock (of course) */
+ __u32 pixclock; /* pixel clock in ps (pico seconds) */
+ __u32 left_margin; /* time from sync to picture */
+ __u32 right_margin; /* time from picture to sync */
+ __u32 upper_margin; /* time from sync to picture */
+ __u32 lower_margin;
+ __u32 hsync_len; /* length of horizontal sync */
+ __u32 vsync_len; /* length of vertical sync */
+ __u32 sync; /* see FB_SYNC_* */
+ __u32 vmode; /* see FB_VMODE_* */
+ __u32 rotate; /* angle we rotate counter clockwise */
+ __u32 colorspace; /* colorspace for FOURCC-based modes */
+ __u32 reserved[4]; /* Reserved for future compatibility */
+};
+
+To modify variable information, applications call the FBIOPUT_VSCREENINFO
+ioctl with a pointer to a fb_var_screeninfo structure. If the call is
+successful, the driver will update the fixed screen information accordingly.
+
+Instead of filling the complete fb_var_screeninfo structure manually,
+applications should call the FBIOGET_VSCREENINFO ioctl and modify only the
+fields they care about.
+
+
+4. Format configuration
+-----------------------
+
+Frame buffer devices offer two ways to configure the frame buffer format: the
+legacy API and the FOURCC-based API.
+
+
+The legacy API has been the only frame buffer format configuration API for a
+long time and is thus widely used by application. It is the recommended API
+for applications when using RGB and grayscale formats, as well as legacy
+non-standard formats.
+
+To select a format, applications set the fb_var_screeninfo bits_per_pixel field
+to the desired frame buffer depth. Values up to 8 will usually map to
+monochrome, grayscale or pseudocolor visuals, although this is not required.
+
+- For grayscale formats, applications set the grayscale field to one. The red,
+ blue, green and transp fields must be set to 0 by applications and ignored by
+ drivers. Drivers must fill the red, blue and green offsets to 0 and lengths
+ to the bits_per_pixel value.
+
+- For pseudocolor formats, applications set the grayscale field to zero. The
+ red, blue, green and transp fields must be set to 0 by applications and
+ ignored by drivers. Drivers must fill the red, blue and green offsets to 0
+ and lengths to the bits_per_pixel value.
+
+- For truecolor and directcolor formats, applications set the grayscale field
+ to zero, and the red, blue, green and transp fields to describe the layout of
+ color components in memory.
+
+struct fb_bitfield {
+ __u32 offset; /* beginning of bitfield */
+ __u32 length; /* length of bitfield */
+ __u32 msb_right; /* != 0 : Most significant bit is */
+ /* right */
+};
+
+ Pixel values are bits_per_pixel wide and are split in non-overlapping red,
+ green, blue and alpha (transparency) components. Location and size of each
+ component in the pixel value are described by the fb_bitfield offset and
+ length fields. Offset are computed from the right.
+
+ Pixels are always stored in an integer number of bytes. If the number of
+ bits per pixel is not a multiple of 8, pixel values are padded to the next
+ multiple of 8 bits.
+
+Upon successful format configuration, drivers update the fb_fix_screeninfo
+type, visual and line_length fields depending on the selected format.
+
+
+The FOURCC-based API replaces format descriptions by four character codes
+(FOURCC). FOURCCs are abstract identifiers that uniquely define a format
+without explicitly describing it. This is the only API that supports YUV
+formats. Drivers are also encouraged to implement the FOURCC-based API for RGB
+and grayscale formats.
+
+Drivers that support the FOURCC-based API report this capability by setting
+the FB_CAP_FOURCC bit in the fb_fix_screeninfo capabilities field.
+
+FOURCC definitions are located in the linux/videodev2.h header. However, and
+despite starting with the V4L2_PIX_FMT_prefix, they are not restricted to V4L2
+and don't require usage of the V4L2 subsystem. FOURCC documentation is
+available in Documentation/DocBook/v4l/pixfmt.xml.
+
+To select a format, applications set the grayscale field to the desired FOURCC.
+For YUV formats, they should also select the appropriate colorspace by setting
+the colorspace field to one of the colorspaces listed in linux/videodev2.h and
+documented in Documentation/DocBook/v4l/colorspaces.xml.
+
+The red, green, blue and transp fields are not used with the FOURCC-based API.
+For forward compatibility reasons applications must zero those fields, and
+drivers must ignore them. Values other than 0 may get a meaning in future
+extensions.
+
+Upon successful format configuration, drivers update the fb_fix_screeninfo
+type, visual and line_length fields depending on the selected format. The type
+and visual fields are set to FB_TYPE_FOURCC and FB_VISUAL_FOURCC respectively.
diff --git a/Documentation/fb/arkfb.txt b/Documentation/fb/arkfb.txt
new file mode 100644
index 00000000..e8487a9d
--- /dev/null
+++ b/Documentation/fb/arkfb.txt
@@ -0,0 +1,68 @@
+
+ arkfb - fbdev driver for ARK Logic chips
+ ========================================
+
+
+Supported Hardware
+==================
+
+ ARK 2000PV chip
+ ICS 5342 ramdac
+
+ - only BIOS initialized VGA devices supported
+ - probably not working on big endian
+
+
+Supported Features
+==================
+
+ * 4 bpp pseudocolor modes (with 18bit palette, two variants)
+ * 8 bpp pseudocolor mode (with 18bit palette)
+ * 16 bpp truecolor modes (RGB 555 and RGB 565)
+ * 24 bpp truecolor mode (RGB 888)
+ * 32 bpp truecolor mode (RGB 888)
+ * text mode (activated by bpp = 0)
+ * doublescan mode variant (not available in text mode)
+ * panning in both directions
+ * suspend/resume support
+
+Text mode is supported even in higher resolutions, but there is limitation to
+lower pixclocks (i got maximum about 70 MHz, it is dependent on specific
+hardware). This limitation is not enforced by driver. Text mode supports 8bit
+wide fonts only (hardware limitation) and 16bit tall fonts (driver
+limitation). Unfortunately character attributes (like color) in text mode are
+broken for unknown reason, so its usefulness is limited.
+
+There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with
+packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode
+with interleaved planes (1 byte interleave), MSB first. Both modes support
+8bit wide fonts only (driver limitation).
+
+Suspend/resume works on systems that initialize video card during resume and
+if device is active (for example used by fbcon).
+
+
+Missing Features
+================
+(alias TODO list)
+
+ * secondary (not initialized by BIOS) device support
+ * big endian support
+ * DPMS support
+ * MMIO support
+ * interlaced mode variant
+ * support for fontwidths != 8 in 4 bpp modes
+ * support for fontheight != 16 in text mode
+ * hardware cursor
+ * vsync synchronization
+ * feature connector support
+ * acceleration support (8514-like 2D)
+
+
+Known bugs
+==========
+
+ * character attributes (and cursor) in text mode are broken
+
+--
+Ondrej Zajicek <santiago@crfreenet.org>
diff --git a/Documentation/fb/aty128fb.txt b/Documentation/fb/aty128fb.txt
new file mode 100644
index 00000000..b605204f
--- /dev/null
+++ b/Documentation/fb/aty128fb.txt
@@ -0,0 +1,72 @@
+[This file is cloned from VesaFB/matroxfb]
+
+What is aty128fb?
+=================
+
+This is a driver for a graphic framebuffer for ATI Rage128 based devices
+on Intel and PPC boxes.
+
+Advantages:
+
+ * It provides a nice large console (128 cols + 48 lines with 1024x768)
+ without using tiny, unreadable fonts.
+ * You can run XF68_FBDev on top of /dev/fb0
+ * Most important: boot logo :-)
+
+Disadvantages:
+
+ * graphic mode is slower than text mode... but you should not notice
+ if you use same resolution as you used in textmode.
+ * still experimental.
+
+
+How to use it?
+==============
+
+Switching modes is done using the video=aty128fb:<resolution>... modedb
+boot parameter or using `fbset' program.
+
+See Documentation/fb/modedb.txt for more information on modedb
+resolutions.
+
+You should compile in both vgacon (to boot if you remove your Rage128 from
+box) and aty128fb (for graphics mode). You should not compile-in vesafb
+unless you have primary display on non-Rage128 VBE2.0 device (see
+Documentation/fb/vesafb.txt for details).
+
+
+X11
+===
+
+XF68_FBDev should generally work fine, but it is non-accelerated. As of
+this document, 8 and 32bpp works fine. There have been palette issues
+when switching from X to console and back to X. You will have to restart
+X to fix this.
+
+
+Configuration
+=============
+
+You can pass kernel command line options to vesafb with
+`video=aty128fb:option1,option2:value2,option3' (multiple options should
+be separated by comma, values are separated from options by `:').
+Accepted options:
+
+noaccel - do not use acceleration engine. It is default.
+accel - use acceleration engine. Not finished.
+vmode:x - chooses PowerMacintosh video mode <x>. Deprecated.
+cmode:x - chooses PowerMacintosh colour mode <x>. Deprecated.
+<XxX@X> - selects startup videomode. See modedb.txt for detailed
+ explanation. Default is 640x480x8bpp.
+
+
+Limitations
+===========
+
+There are known and unknown bugs, features and misfeatures.
+Currently there are following known bugs:
+ + This driver is still experimental and is not finished. Too many
+ bugs/errata to list here.
+
+--
+Brad Douglas <brad@neruo.com>
diff --git a/Documentation/fb/cirrusfb.txt b/Documentation/fb/cirrusfb.txt
new file mode 100644
index 00000000..f9436843
--- /dev/null
+++ b/Documentation/fb/cirrusfb.txt
@@ -0,0 +1,97 @@
+
+ Framebuffer driver for Cirrus Logic chipsets
+ Copyright 1999 Jeff Garzik <jgarzik@pobox.com>
+
+
+
+{ just a little something to get people going; contributors welcome! }
+
+
+
+Chip families supported:
+ SD64
+ Piccolo
+ Picasso
+ Spectrum
+ Alpine (GD-543x/4x)
+ Picasso4 (GD-5446)
+ GD-5480
+ Laguna (GD-546x)
+
+Bus's supported:
+ PCI
+ Zorro
+
+Architectures supported:
+ i386
+ Alpha
+ PPC (Motorola Powerstack)
+ m68k (Amiga)
+
+
+
+Default video modes
+-------------------
+At the moment, there are two kernel command line arguments supported:
+
+mode:640x480
+mode:800x600
+ or
+mode:1024x768
+
+Full support for startup video modes (modedb) will be integrated soon.
+
+Version 1.9.9.1
+---------------
+* Fix memory detection for 512kB case
+* 800x600 mode
+* Fixed timings
+* Hint for AXP: Use -accel false -vyres -1 when changing resolution
+
+
+Version 1.9.4.4
+---------------
+* Preliminary Laguna support
+* Overhaul color register routines.
+* Associated with the above, console colors are now obtained from a LUT
+ called 'palette' instead of from the VGA registers. This code was
+ modeled after that in atyfb and matroxfb.
+* Code cleanup, add comments.
+* Overhaul SR07 handling.
+* Bug fixes.
+
+
+Version 1.9.4.3
+---------------
+* Correctly set default startup video mode.
+* Do not override ram size setting. Define
+ CLGEN_USE_HARDCODED_RAM_SETTINGS if you _do_ want to override the RAM
+ setting.
+* Compile fixes related to new 2.3.x IORESOURCE_IO[PORT] symbol changes.
+* Use new 2.3.x resource allocation.
+* Some code cleanup.
+
+
+Version 1.9.4.2
+---------------
+* Casting fixes.
+* Assertions no longer cause an oops on purpose.
+* Bug fixes.
+
+
+Version 1.9.4.1
+---------------
+* Add compatibility support. Now requires a 2.1.x, 2.2.x or 2.3.x kernel.
+
+
+Version 1.9.4
+-------------
+* Several enhancements, smaller memory footprint, a few bugfixes.
+* Requires kernel 2.3.14-pre1 or later.
+
+
+Version 1.9.3
+-------------
+* Bundled with kernel 2.3.14-pre1 or later.
+
+
diff --git a/Documentation/fb/cmap_xfbdev.txt b/Documentation/fb/cmap_xfbdev.txt
new file mode 100644
index 00000000..55e1f0a3
--- /dev/null
+++ b/Documentation/fb/cmap_xfbdev.txt
@@ -0,0 +1,53 @@
+Understanding fbdev's cmap
+--------------------------
+
+These notes explain how X's dix layer uses fbdev's cmap structures.
+
+*. example of relevant structures in fbdev as used for a 3-bit grayscale cmap
+struct fb_var_screeninfo {
+ .bits_per_pixel = 8,
+ .grayscale = 1,
+ .red = { 4, 3, 0 },
+ .green = { 0, 0, 0 },
+ .blue = { 0, 0, 0 },
+}
+struct fb_fix_screeninfo {
+ .visual = FB_VISUAL_STATIC_PSEUDOCOLOR,
+}
+for (i = 0; i < 8; i++)
+ info->cmap.red[i] = (((2*i)+1)*(0xFFFF))/16;
+memcpy(info->cmap.green, info->cmap.red, sizeof(u16)*8);
+memcpy(info->cmap.blue, info->cmap.red, sizeof(u16)*8);
+
+*. X11 apps do something like the following when trying to use grayscale.
+for (i=0; i < 8; i++) {
+ char colorspec[64];
+ memset(colorspec,0,64);
+ sprintf(colorspec, "rgb:%x/%x/%x", i*36,i*36,i*36);
+ if (!XParseColor(outputDisplay, testColormap, colorspec, &wantedColor))
+ printf("Can't get color %s\n",colorspec);
+ XAllocColor(outputDisplay, testColormap, &wantedColor);
+ grays[i] = wantedColor;
+}
+There's also named equivalents like gray1..x provided you have an rgb.txt.
+
+Somewhere in X's callchain, this results in a call to X code that handles the
+colormap. For example, Xfbdev hits the following:
+
+xc-011010/programs/Xserver/dix/colormap.c:
+
+FindBestPixel(pentFirst, size, prgb, channel)
+
+dr = (long) pent->co.local.red - prgb->red;
+dg = (long) pent->co.local.green - prgb->green;
+db = (long) pent->co.local.blue - prgb->blue;
+sq = dr * dr;
+UnsignedToBigNum (sq, &sum);
+BigNumAdd (&sum, &temp, &sum);
+
+co.local.red are entries that were brought in through FBIOGETCMAP which come
+directly from the info->cmap.red that was listed above. The prgb is the rgb
+that the app wants to match to. The above code is doing what looks like a least
+squares matching function. That's why the cmap entries can't be set to the left
+hand side boundaries of a color range.
+
diff --git a/Documentation/fb/deferred_io.txt b/Documentation/fb/deferred_io.txt
new file mode 100644
index 00000000..74832837
--- /dev/null
+++ b/Documentation/fb/deferred_io.txt
@@ -0,0 +1,75 @@
+Deferred IO
+-----------
+
+Deferred IO is a way to delay and repurpose IO. It uses host memory as a
+buffer and the MMU pagefault as a pretrigger for when to perform the device
+IO. The following example may be a useful explanation of how one such setup
+works:
+
+- userspace app like Xfbdev mmaps framebuffer
+- deferred IO and driver sets up fault and page_mkwrite handlers
+- userspace app tries to write to mmaped vaddress
+- we get pagefault and reach fault handler
+- fault handler finds and returns physical page
+- we get page_mkwrite where we add this page to a list
+- schedule a workqueue task to be run after a delay
+- app continues writing to that page with no additional cost. this is
+ the key benefit.
+- the workqueue task comes in and mkcleans the pages on the list, then
+ completes the work associated with updating the framebuffer. this is
+ the real work talking to the device.
+- app tries to write to the address (that has now been mkcleaned)
+- get pagefault and the above sequence occurs again
+
+As can be seen from above, one benefit is roughly to allow bursty framebuffer
+writes to occur at minimum cost. Then after some time when hopefully things
+have gone quiet, we go and really update the framebuffer which would be
+a relatively more expensive operation.
+
+For some types of nonvolatile high latency displays, the desired image is
+the final image rather than the intermediate stages which is why it's okay
+to not update for each write that is occurring.
+
+It may be the case that this is useful in other scenarios as well. Paul Mundt
+has mentioned a case where it is beneficial to use the page count to decide
+whether to coalesce and issue SG DMA or to do memory bursts.
+
+Another one may be if one has a device framebuffer that is in an usual format,
+say diagonally shifting RGB, this may then be a mechanism for you to allow
+apps to pretend to have a normal framebuffer but reswizzle for the device
+framebuffer at vsync time based on the touched pagelist.
+
+How to use it: (for applications)
+---------------------------------
+No changes needed. mmap the framebuffer like normal and just use it.
+
+How to use it: (for fbdev drivers)
+----------------------------------
+The following example may be helpful.
+
+1. Setup your structure. Eg:
+
+static struct fb_deferred_io hecubafb_defio = {
+ .delay = HZ,
+ .deferred_io = hecubafb_dpy_deferred_io,
+};
+
+The delay is the minimum delay between when the page_mkwrite trigger occurs
+and when the deferred_io callback is called. The deferred_io callback is
+explained below.
+
+2. Setup your deferred IO callback. Eg:
+static void hecubafb_dpy_deferred_io(struct fb_info *info,
+ struct list_head *pagelist)
+
+The deferred_io callback is where you would perform all your IO to the display
+device. You receive the pagelist which is the list of pages that were written
+to during the delay. You must not modify this list. This callback is called
+from a workqueue.
+
+3. Call init
+ info->fbdefio = &hecubafb_defio;
+ fb_deferred_io_init(info);
+
+4. Call cleanup
+ fb_deferred_io_cleanup(info);
diff --git a/Documentation/fb/efifb.txt b/Documentation/fb/efifb.txt
new file mode 100644
index 00000000..a59916c2
--- /dev/null
+++ b/Documentation/fb/efifb.txt
@@ -0,0 +1,31 @@
+
+What is efifb?
+===============
+
+This is a generic EFI platform driver for Intel based Apple computers.
+efifb is only for EFI booted Intel Macs.
+
+Supported Hardware
+==================
+
+iMac 17"/20"
+Macbook
+Macbook Pro 15"/17"
+MacMini
+
+How to use it?
+==============
+
+efifb does not have any kind of autodetection of your machine.
+You have to add the following kernel parameters in your elilo.conf:
+ Macbook :
+ video=efifb:macbook
+ MacMini :
+ video=efifb:mini
+ Macbook Pro 15", iMac 17" :
+ video=efifb:i17
+ Macbook Pro 17", iMac 20" :
+ video=efifb:i20
+
+--
+Edgar Hucek <gimli@dark-green.com>
diff --git a/Documentation/fb/ep93xx-fb.txt b/Documentation/fb/ep93xx-fb.txt
new file mode 100644
index 00000000..5af1bd9e
--- /dev/null
+++ b/Documentation/fb/ep93xx-fb.txt
@@ -0,0 +1,135 @@
+================================
+Driver for EP93xx LCD controller
+================================
+
+The EP93xx LCD controller can drive both standard desktop monitors and
+embedded LCD displays. If you have a standard desktop monitor then you
+can use the standard Linux video mode database. In your board file:
+
+ static struct ep93xxfb_mach_info some_board_fb_info = {
+ .num_modes = EP93XXFB_USE_MODEDB,
+ .bpp = 16,
+ };
+
+If you have an embedded LCD display then you need to define a video
+mode for it as follows:
+
+ static struct fb_videomode some_board_video_modes[] = {
+ {
+ .name = "some_lcd_name",
+ /* Pixel clock, porches, etc */
+ },
+ };
+
+Note that the pixel clock value is in pico-seconds. You can use the
+KHZ2PICOS macro to convert the pixel clock value. Most other values
+are in pixel clocks. See Documentation/fb/framebuffer.txt for further
+details.
+
+The ep93xxfb_mach_info structure for your board should look like the
+following:
+
+ static struct ep93xxfb_mach_info some_board_fb_info = {
+ .num_modes = ARRAY_SIZE(some_board_video_modes),
+ .modes = some_board_video_modes,
+ .default_mode = &some_board_video_modes[0],
+ .bpp = 16,
+ };
+
+The framebuffer device can be registered by adding the following to
+your board initialisation function:
+
+ ep93xx_register_fb(&some_board_fb_info);
+
+=====================
+Video Attribute Flags
+=====================
+
+The ep93xxfb_mach_info structure has a flags field which can be used
+to configure the controller. The video attributes flags are fully
+documented in section 7 of the EP93xx users' guide. The following
+flags are available:
+
+EP93XXFB_PCLK_FALLING Clock data on the falling edge of the
+ pixel clock. The default is to clock
+ data on the rising edge.
+
+EP93XXFB_SYNC_BLANK_HIGH Blank signal is active high. By
+ default the blank signal is active low.
+
+EP93XXFB_SYNC_HORIZ_HIGH Horizontal sync is active high. By
+ default the horizontal sync is active low.
+
+EP93XXFB_SYNC_VERT_HIGH Vertical sync is active high. By
+ default the vertical sync is active high.
+
+The physical address of the framebuffer can be controlled using the
+following flags:
+
+EP93XXFB_USE_SDCSN0 Use SDCSn[0] for the framebuffer. This
+ is the default setting.
+
+EP93XXFB_USE_SDCSN1 Use SDCSn[1] for the framebuffer.
+
+EP93XXFB_USE_SDCSN2 Use SDCSn[2] for the framebuffer.
+
+EP93XXFB_USE_SDCSN3 Use SDCSn[3] for the framebuffer.
+
+==================
+Platform callbacks
+==================
+
+The EP93xx framebuffer driver supports three optional platform
+callbacks: setup, teardown and blank. The setup and teardown functions
+are called when the framebuffer driver is installed and removed
+respectively. The blank function is called whenever the display is
+blanked or unblanked.
+
+The setup and teardown devices pass the platform_device structure as
+an argument. The fb_info and ep93xxfb_mach_info structures can be
+obtained as follows:
+
+ static int some_board_fb_setup(struct platform_device *pdev)
+ {
+ struct ep93xxfb_mach_info *mach_info = pdev->dev.platform_data;
+ struct fb_info *fb_info = platform_get_drvdata(pdev);
+
+ /* Board specific framebuffer setup */
+ }
+
+======================
+Setting the video mode
+======================
+
+The video mode is set using the following syntax:
+
+ video=XRESxYRES[-BPP][@REFRESH]
+
+If the EP93xx video driver is built-in then the video mode is set on
+the Linux kernel command line, for example:
+
+ video=ep93xx-fb:800x600-16@60
+
+If the EP93xx video driver is built as a module then the video mode is
+set when the module is installed:
+
+ modprobe ep93xx-fb video=320x240
+
+==============
+Screenpage bug
+==============
+
+At least on the EP9315 there is a silicon bug which causes bit 27 of
+the VIDSCRNPAGE (framebuffer physical offset) to be tied low. There is
+an unofficial errata for this bug at:
+ http://marc.info/?l=linux-arm-kernel&m=110061245502000&w=2
+
+By default the EP93xx framebuffer driver checks if the allocated physical
+address has bit 27 set. If it does, then the memory is freed and an
+error is returned. The check can be disabled by adding the following
+option when loading the driver:
+
+ ep93xx-fb.check_screenpage_bug=0
+
+In some cases it may be possible to reconfigure your SDRAM layout to
+avoid this bug. See section 13 of the EP93xx users' guide for details.
diff --git a/Documentation/fb/fbcon.txt b/Documentation/fb/fbcon.txt
new file mode 100644
index 00000000..99ea58e6
--- /dev/null
+++ b/Documentation/fb/fbcon.txt
@@ -0,0 +1,324 @@
+The Framebuffer Console
+=======================
+
+ The framebuffer console (fbcon), as its name implies, is a text
+console running on top of the framebuffer device. It has the functionality of
+any standard text console driver, such as the VGA console, with the added
+features that can be attributed to the graphical nature of the framebuffer.
+
+ In the x86 architecture, the framebuffer console is optional, and
+some even treat it as a toy. For other architectures, it is the only available
+display device, text or graphical.
+
+ What are the features of fbcon? The framebuffer console supports
+high resolutions, varying font types, display rotation, primitive multihead,
+etc. Theoretically, multi-colored fonts, blending, aliasing, and any feature
+made available by the underlying graphics card are also possible.
+
+A. Configuration
+
+ The framebuffer console can be enabled by using your favorite kernel
+configuration tool. It is under Device Drivers->Graphics Support->Support for
+framebuffer devices->Framebuffer Console Support. Select 'y' to compile
+support statically, or 'm' for module support. The module will be fbcon.
+
+ In order for fbcon to activate, at least one framebuffer driver is
+required, so choose from any of the numerous drivers available. For x86
+systems, they almost universally have VGA cards, so vga16fb and vesafb will
+always be available. However, using a chipset-specific driver will give you
+more speed and features, such as the ability to change the video mode
+dynamically.
+
+ To display the penguin logo, choose any logo available in Logo
+Configuration->Boot up logo.
+
+ Also, you will need to select at least one compiled-in fonts, but if
+you don't do anything, the kernel configuration tool will select one for you,
+usually an 8x16 font.
+
+GOTCHA: A common bug report is enabling the framebuffer without enabling the
+framebuffer console. Depending on the driver, you may get a blanked or
+garbled display, but the system still boots to completion. If you are
+fortunate to have a driver that does not alter the graphics chip, then you
+will still get a VGA console.
+
+B. Loading
+
+Possible scenarios:
+
+1. Driver and fbcon are compiled statically
+
+ Usually, fbcon will automatically take over your console. The notable
+ exception is vesafb. It needs to be explicitly activated with the
+ vga= boot option parameter.
+
+2. Driver is compiled statically, fbcon is compiled as a module
+
+ Depending on the driver, you either get a standard console, or a
+ garbled display, as mentioned above. To get a framebuffer console,
+ do a 'modprobe fbcon'.
+
+3. Driver is compiled as a module, fbcon is compiled statically
+
+ You get your standard console. Once the driver is loaded with
+ 'modprobe xxxfb', fbcon automatically takes over the console with
+ the possible exception of using the fbcon=map:n option. See below.
+
+4. Driver and fbcon are compiled as a module.
+
+ You can load them in any order. Once both are loaded, fbcon will take
+ over the console.
+
+C. Boot options
+
+ The framebuffer console has several, largely unknown, boot options
+ that can change its behavior.
+
+1. fbcon=font:<name>
+
+ Select the initial font to use. The value 'name' can be any of the
+ compiled-in fonts: VGA8x16, 7x14, 10x18, VGA8x8, MINI4x6, RomanLarge,
+ SUN8x16, SUN12x22, ProFont6x11, Acorn8x8, PEARL8x8.
+
+ Note, not all drivers can handle font with widths not divisible by 8,
+ such as vga16fb.
+
+2. fbcon=scrollback:<value>[k]
+
+ The scrollback buffer is memory that is used to preserve display
+ contents that has already scrolled past your view. This is accessed
+ by using the Shift-PageUp key combination. The value 'value' is any
+ integer. It defaults to 32KB. The 'k' suffix is optional, and will
+ multiply the 'value' by 1024.
+
+3. fbcon=map:<0123>
+
+ This is an interesting option. It tells which driver gets mapped to
+ which console. The value '0123' is a sequence that gets repeated until
+ the total length is 64 which is the number of consoles available. In
+ the above example, it is expanded to 012301230123... and the mapping
+ will be:
+
+ tty | 1 2 3 4 5 6 7 8 9 ...
+ fb | 0 1 2 3 0 1 2 3 0 ...
+
+ ('cat /proc/fb' should tell you what the fb numbers are)
+
+ One side effect that may be useful is using a map value that exceeds
+ the number of loaded fb drivers. For example, if only one driver is
+ available, fb0, adding fbcon=map:1 tells fbcon not to take over the
+ console.
+
+ Later on, when you want to map the console the to the framebuffer
+ device, you can use the con2fbmap utility.
+
+4. fbcon=vc:<n1>-<n2>
+
+ This option tells fbcon to take over only a range of consoles as
+ specified by the values 'n1' and 'n2'. The rest of the consoles
+ outside the given range will still be controlled by the standard
+ console driver.
+
+ NOTE: For x86 machines, the standard console is the VGA console which
+ is typically located on the same video card. Thus, the consoles that
+ are controlled by the VGA console will be garbled.
+
+4. fbcon=rotate:<n>
+
+ This option changes the orientation angle of the console display. The
+ value 'n' accepts the following:
+
+ 0 - normal orientation (0 degree)
+ 1 - clockwise orientation (90 degrees)
+ 2 - upside down orientation (180 degrees)
+ 3 - counterclockwise orientation (270 degrees)
+
+ The angle can be changed anytime afterwards by 'echoing' the same
+ numbers to any one of the 2 attributes found in
+ /sys/class/graphics/fbcon
+
+ rotate - rotate the display of the active console
+ rotate_all - rotate the display of all consoles
+
+ Console rotation will only become available if Console Rotation
+ Support is compiled in your kernel.
+
+ NOTE: This is purely console rotation. Any other applications that
+ use the framebuffer will remain at their 'normal'orientation.
+ Actually, the underlying fb driver is totally ignorant of console
+ rotation.
+
+C. Attaching, Detaching and Unloading
+
+Before going on on how to attach, detach and unload the framebuffer console, an
+illustration of the dependencies may help.
+
+The console layer, as with most subsystems, needs a driver that interfaces with
+the hardware. Thus, in a VGA console:
+
+console ---> VGA driver ---> hardware.
+
+Assuming the VGA driver can be unloaded, one must first unbind the VGA driver
+from the console layer before unloading the driver. The VGA driver cannot be
+unloaded if it is still bound to the console layer. (See
+Documentation/console/console.txt for more information).
+
+This is more complicated in the case of the framebuffer console (fbcon),
+because fbcon is an intermediate layer between the console and the drivers:
+
+console ---> fbcon ---> fbdev drivers ---> hardware
+
+The fbdev drivers cannot be unloaded if it's bound to fbcon, and fbcon cannot
+be unloaded if it's bound to the console layer.
+
+So to unload the fbdev drivers, one must first unbind fbcon from the console,
+then unbind the fbdev drivers from fbcon. Fortunately, unbinding fbcon from
+the console layer will automatically unbind framebuffer drivers from
+fbcon. Thus, there is no need to explicitly unbind the fbdev drivers from
+fbcon.
+
+So, how do we unbind fbcon from the console? Part of the answer is in
+Documentation/console/console.txt. To summarize:
+
+Echo a value to the bind file that represents the framebuffer console
+driver. So assuming vtcon1 represents fbcon, then:
+
+echo 1 > sys/class/vtconsole/vtcon1/bind - attach framebuffer console to
+ console layer
+echo 0 > sys/class/vtconsole/vtcon1/bind - detach framebuffer console from
+ console layer
+
+If fbcon is detached from the console layer, your boot console driver (which is
+usually VGA text mode) will take over. A few drivers (rivafb and i810fb) will
+restore VGA text mode for you. With the rest, before detaching fbcon, you
+must take a few additional steps to make sure that your VGA text mode is
+restored properly. The following is one of the several methods that you can do:
+
+1. Download or install vbetool. This utility is included with most
+ distributions nowadays, and is usually part of the suspend/resume tool.
+
+2. In your kernel configuration, ensure that CONFIG_FRAMEBUFFER_CONSOLE is set
+ to 'y' or 'm'. Enable one or more of your favorite framebuffer drivers.
+
+3. Boot into text mode and as root run:
+
+ vbetool vbestate save > <vga state file>
+
+ The above command saves the register contents of your graphics
+ hardware to <vga state file>. You need to do this step only once as
+ the state file can be reused.
+
+4. If fbcon is compiled as a module, load fbcon by doing:
+
+ modprobe fbcon
+
+5. Now to detach fbcon:
+
+ vbetool vbestate restore < <vga state file> && \
+ echo 0 > /sys/class/vtconsole/vtcon1/bind
+
+6. That's it, you're back to VGA mode. And if you compiled fbcon as a module,
+ you can unload it by 'rmmod fbcon'
+
+7. To reattach fbcon:
+
+ echo 1 > /sys/class/vtconsole/vtcon1/bind
+
+8. Once fbcon is unbound, all drivers registered to the system will also
+become unbound. This means that fbcon and individual framebuffer drivers
+can be unloaded or reloaded at will. Reloading the drivers or fbcon will
+automatically bind the console, fbcon and the drivers together. Unloading
+all the drivers without unloading fbcon will make it impossible for the
+console to bind fbcon.
+
+Notes for vesafb users:
+=======================
+
+Unfortunately, if your bootline includes a vga=xxx parameter that sets the
+hardware in graphics mode, such as when loading vesafb, vgacon will not load.
+Instead, vgacon will replace the default boot console with dummycon, and you
+won't get any display after detaching fbcon. Your machine is still alive, so
+you can reattach vesafb. However, to reattach vesafb, you need to do one of
+the following:
+
+Variation 1:
+
+ a. Before detaching fbcon, do
+
+ vbetool vbemode save > <vesa state file> # do once for each vesafb mode,
+ # the file can be reused
+
+ b. Detach fbcon as in step 5.
+
+ c. Attach fbcon
+
+ vbetool vbestate restore < <vesa state file> && \
+ echo 1 > /sys/class/vtconsole/vtcon1/bind
+
+Variation 2:
+
+ a. Before detaching fbcon, do:
+ echo <ID> > /sys/class/tty/console/bind
+
+
+ vbetool vbemode get
+
+ b. Take note of the mode number
+
+ b. Detach fbcon as in step 5.
+
+ c. Attach fbcon:
+
+ vbetool vbemode set <mode number> && \
+ echo 1 > /sys/class/vtconsole/vtcon1/bind
+
+Samples:
+========
+
+Here are 2 sample bash scripts that you can use to bind or unbind the
+framebuffer console driver if you are in an X86 box:
+
+---------------------------------------------------------------------------
+#!/bin/bash
+# Unbind fbcon
+
+# Change this to where your actual vgastate file is located
+# Or Use VGASTATE=$1 to indicate the state file at runtime
+VGASTATE=/tmp/vgastate
+
+# path to vbetool
+VBETOOL=/usr/local/bin
+
+
+for (( i = 0; i < 16; i++))
+do
+ if test -x /sys/class/vtconsole/vtcon$i; then
+ if [ `cat /sys/class/vtconsole/vtcon$i/name | grep -c "frame buffer"` \
+ = 1 ]; then
+ if test -x $VBETOOL/vbetool; then
+ echo Unbinding vtcon$i
+ $VBETOOL/vbetool vbestate restore < $VGASTATE
+ echo 0 > /sys/class/vtconsole/vtcon$i/bind
+ fi
+ fi
+ fi
+done
+
+---------------------------------------------------------------------------
+#!/bin/bash
+# Bind fbcon
+
+for (( i = 0; i < 16; i++))
+do
+ if test -x /sys/class/vtconsole/vtcon$i; then
+ if [ `cat /sys/class/vtconsole/vtcon$i/name | grep -c "frame buffer"` \
+ = 1 ]; then
+ echo Unbinding vtcon$i
+ echo 1 > /sys/class/vtconsole/vtcon$i/bind
+ fi
+ fi
+done
+---------------------------------------------------------------------------
+
+--
+Antonino Daplas <adaplas@pol.net>
diff --git a/Documentation/fb/framebuffer.txt b/Documentation/fb/framebuffer.txt
new file mode 100644
index 00000000..58c5ae2e
--- /dev/null
+++ b/Documentation/fb/framebuffer.txt
@@ -0,0 +1,343 @@
+ The Frame Buffer Device
+ -----------------------
+
+Maintained by Geert Uytterhoeven <geert@linux-m68k.org>
+Last revised: May 10, 2001
+
+
+0. Introduction
+---------------
+
+The frame buffer device provides an abstraction for the graphics hardware. It
+represents the frame buffer of some video hardware and allows application
+software to access the graphics hardware through a well-defined interface, so
+the software doesn't need to know anything about the low-level (hardware
+register) stuff.
+
+The device is accessed through special device nodes, usually located in the
+/dev directory, i.e. /dev/fb*.
+
+
+1. User's View of /dev/fb*
+--------------------------
+
+From the user's point of view, the frame buffer device looks just like any
+other device in /dev. It's a character device using major 29; the minor
+specifies the frame buffer number.
+
+By convention, the following device nodes are used (numbers indicate the device
+minor numbers):
+
+ 0 = /dev/fb0 First frame buffer
+ 1 = /dev/fb1 Second frame buffer
+ ...
+ 31 = /dev/fb31 32nd frame buffer
+
+For backwards compatibility, you may want to create the following symbolic
+links:
+
+ /dev/fb0current -> fb0
+ /dev/fb1current -> fb1
+
+and so on...
+
+The frame buffer devices are also `normal' memory devices, this means, you can
+read and write their contents. You can, for example, make a screen snapshot by
+
+ cp /dev/fb0 myfile
+
+There also can be more than one frame buffer at a time, e.g. if you have a
+graphics card in addition to the built-in hardware. The corresponding frame
+buffer devices (/dev/fb0 and /dev/fb1 etc.) work independently.
+
+Application software that uses the frame buffer device (e.g. the X server) will
+use /dev/fb0 by default (older software uses /dev/fb0current). You can specify
+an alternative frame buffer device by setting the environment variable
+$FRAMEBUFFER to the path name of a frame buffer device, e.g. (for sh/bash
+users):
+
+ export FRAMEBUFFER=/dev/fb1
+
+or (for csh users):
+
+ setenv FRAMEBUFFER /dev/fb1
+
+After this the X server will use the second frame buffer.
+
+
+2. Programmer's View of /dev/fb*
+--------------------------------
+
+As you already know, a frame buffer device is a memory device like /dev/mem and
+it has the same features. You can read it, write it, seek to some location in
+it and mmap() it (the main usage). The difference is just that the memory that
+appears in the special file is not the whole memory, but the frame buffer of
+some video hardware.
+
+/dev/fb* also allows several ioctls on it, by which lots of information about
+the hardware can be queried and set. The color map handling works via ioctls,
+too. Look into <linux/fb.h> for more information on what ioctls exist and on
+which data structures they work. Here's just a brief overview:
+
+ - You can request unchangeable information about the hardware, like name,
+ organization of the screen memory (planes, packed pixels, ...) and address
+ and length of the screen memory.
+
+ - You can request and change variable information about the hardware, like
+ visible and virtual geometry, depth, color map format, timing, and so on.
+ If you try to change that information, the driver maybe will round up some
+ values to meet the hardware's capabilities (or return EINVAL if that isn't
+ possible).
+
+ - You can get and set parts of the color map. Communication is done with 16
+ bits per color part (red, green, blue, transparency) to support all
+ existing hardware. The driver does all the computations needed to apply
+ it to the hardware (round it down to less bits, maybe throw away
+ transparency).
+
+All this hardware abstraction makes the implementation of application programs
+easier and more portable. E.g. the X server works completely on /dev/fb* and
+thus doesn't need to know, for example, how the color registers of the concrete
+hardware are organized. XF68_FBDev is a general X server for bitmapped,
+unaccelerated video hardware. The only thing that has to be built into
+application programs is the screen organization (bitplanes or chunky pixels
+etc.), because it works on the frame buffer image data directly.
+
+For the future it is planned that frame buffer drivers for graphics cards and
+the like can be implemented as kernel modules that are loaded at runtime. Such
+a driver just has to call register_framebuffer() and supply some functions.
+Writing and distributing such drivers independently from the kernel will save
+much trouble...
+
+
+3. Frame Buffer Resolution Maintenance
+--------------------------------------
+
+Frame buffer resolutions are maintained using the utility `fbset'. It can
+change the video mode properties of a frame buffer device. Its main usage is
+to change the current video mode, e.g. during boot up in one of your /etc/rc.*
+or /etc/init.d/* files.
+
+Fbset uses a video mode database stored in a configuration file, so you can
+easily add your own modes and refer to them with a simple identifier.
+
+
+4. The X Server
+---------------
+
+The X server (XF68_FBDev) is the most notable application program for the frame
+buffer device. Starting with XFree86 release 3.2, the X server is part of
+XFree86 and has 2 modes:
+
+ - If the `Display' subsection for the `fbdev' driver in the /etc/XF86Config
+ file contains a
+
+ Modes "default"
+
+ line, the X server will use the scheme discussed above, i.e. it will start
+ up in the resolution determined by /dev/fb0 (or $FRAMEBUFFER, if set). You
+ still have to specify the color depth (using the Depth keyword) and virtual
+ resolution (using the Virtual keyword) though. This is the default for the
+ configuration file supplied with XFree86. It's the most simple
+ configuration, but it has some limitations.
+
+ - Therefore it's also possible to specify resolutions in the /etc/XF86Config
+ file. This allows for on-the-fly resolution switching while retaining the
+ same virtual desktop size. The frame buffer device that's used is still
+ /dev/fb0current (or $FRAMEBUFFER), but the available resolutions are
+ defined by /etc/XF86Config now. The disadvantage is that you have to
+ specify the timings in a different format (but `fbset -x' may help).
+
+To tune a video mode, you can use fbset or xvidtune. Note that xvidtune doesn't
+work 100% with XF68_FBDev: the reported clock values are always incorrect.
+
+
+5. Video Mode Timings
+---------------------
+
+A monitor draws an image on the screen by using an electron beam (3 electron
+beams for color models, 1 electron beam for monochrome monitors). The front of
+the screen is covered by a pattern of colored phosphors (pixels). If a phosphor
+is hit by an electron, it emits a photon and thus becomes visible.
+
+The electron beam draws horizontal lines (scanlines) from left to right, and
+from the top to the bottom of the screen. By modifying the intensity of the
+electron beam, pixels with various colors and intensities can be shown.
+
+After each scanline the electron beam has to move back to the left side of the
+screen and to the next line: this is called the horizontal retrace. After the
+whole screen (frame) was painted, the beam moves back to the upper left corner:
+this is called the vertical retrace. During both the horizontal and vertical
+retrace, the electron beam is turned off (blanked).
+
+The speed at which the electron beam paints the pixels is determined by the
+dotclock in the graphics board. For a dotclock of e.g. 28.37516 MHz (millions
+of cycles per second), each pixel is 35242 ps (picoseconds) long:
+
+ 1/(28.37516E6 Hz) = 35.242E-9 s
+
+If the screen resolution is 640x480, it will take
+
+ 640*35.242E-9 s = 22.555E-6 s
+
+to paint the 640 (xres) pixels on one scanline. But the horizontal retrace
+also takes time (e.g. 272 `pixels'), so a full scanline takes
+
+ (640+272)*35.242E-9 s = 32.141E-6 s
+
+We'll say that the horizontal scanrate is about 31 kHz:
+
+ 1/(32.141E-6 s) = 31.113E3 Hz
+
+A full screen counts 480 (yres) lines, but we have to consider the vertical
+retrace too (e.g. 49 `lines'). So a full screen will take
+
+ (480+49)*32.141E-6 s = 17.002E-3 s
+
+The vertical scanrate is about 59 Hz:
+
+ 1/(17.002E-3 s) = 58.815 Hz
+
+This means the screen data is refreshed about 59 times per second. To have a
+stable picture without visible flicker, VESA recommends a vertical scanrate of
+at least 72 Hz. But the perceived flicker is very human dependent: some people
+can use 50 Hz without any trouble, while I'll notice if it's less than 80 Hz.
+
+Since the monitor doesn't know when a new scanline starts, the graphics board
+will supply a synchronization pulse (horizontal sync or hsync) for each
+scanline. Similarly it supplies a synchronization pulse (vertical sync or
+vsync) for each new frame. The position of the image on the screen is
+influenced by the moments at which the synchronization pulses occur.
+
+The following picture summarizes all timings. The horizontal retrace time is
+the sum of the left margin, the right margin and the hsync length, while the
+vertical retrace time is the sum of the upper margin, the lower margin and the
+vsync length.
+
+ +----------+---------------------------------------------+----------+-------+
+ | | ↑ | | |
+ | | |upper_margin | | |
+ | | ↓ | | |
+ +----------###############################################----------+-------+
+ | # ↑ # | |
+ | # | # | |
+ | # | # | |
+ | # | # | |
+ | left # | # right | hsync |
+ | margin # | xres # margin | len |
+ |<-------->#<---------------+--------------------------->#<-------->|<----->|
+ | # | # | |
+ | # | # | |
+ | # | # | |
+ | # |yres # | |
+ | # | # | |
+ | # | # | |
+ | # | # | |
+ | # | # | |
+ | # | # | |
+ | # | # | |
+ | # | # | |
+ | # | # | |
+ | # ↓ # | |
+ +----------###############################################----------+-------+
+ | | ↑ | | |
+ | | |lower_margin | | |
+ | | ↓ | | |
+ +----------+---------------------------------------------+----------+-------+
+ | | ↑ | | |
+ | | |vsync_len | | |
+ | | ↓ | | |
+ +----------+---------------------------------------------+----------+-------+
+
+The frame buffer device expects all horizontal timings in number of dotclocks
+(in picoseconds, 1E-12 s), and vertical timings in number of scanlines.
+
+
+6. Converting XFree86 timing values info frame buffer device timings
+--------------------------------------------------------------------
+
+An XFree86 mode line consists of the following fields:
+ "800x600" 50 800 856 976 1040 600 637 643 666
+ < name > DCF HR SH1 SH2 HFL VR SV1 SV2 VFL
+
+The frame buffer device uses the following fields:
+
+ - pixclock: pixel clock in ps (pico seconds)
+ - left_margin: time from sync to picture
+ - right_margin: time from picture to sync
+ - upper_margin: time from sync to picture
+ - lower_margin: time from picture to sync
+ - hsync_len: length of horizontal sync
+ - vsync_len: length of vertical sync
+
+1) Pixelclock:
+ xfree: in MHz
+ fb: in picoseconds (ps)
+
+ pixclock = 1000000 / DCF
+
+2) horizontal timings:
+ left_margin = HFL - SH2
+ right_margin = SH1 - HR
+ hsync_len = SH2 - SH1
+
+3) vertical timings:
+ upper_margin = VFL - SV2
+ lower_margin = SV1 - VR
+ vsync_len = SV2 - SV1
+
+Good examples for VESA timings can be found in the XFree86 source tree,
+under "xc/programs/Xserver/hw/xfree86/doc/modeDB.txt".
+
+
+7. References
+-------------
+
+For more specific information about the frame buffer device and its
+applications, please refer to the Linux-fbdev website:
+
+ http://linux-fbdev.sourceforge.net/
+
+and to the following documentation:
+
+ - The manual pages for fbset: fbset(8), fb.modes(5)
+ - The manual pages for XFree86: XF68_FBDev(1), XF86Config(4/5)
+ - The mighty kernel sources:
+ o linux/drivers/video/
+ o linux/include/linux/fb.h
+ o linux/include/video/
+
+
+
+8. Mailing list
+---------------
+
+There is a frame buffer device related mailing list at kernel.org:
+linux-fbdev@vger.kernel.org.
+
+Point your web browser to http://sourceforge.net/projects/linux-fbdev/ for
+subscription information and archive browsing.
+
+
+9. Downloading
+--------------
+
+All necessary files can be found at
+
+ ftp://ftp.uni-erlangen.de/pub/Linux/LOCAL/680x0/
+
+and on its mirrors.
+
+The latest version of fbset can be found at
+
+ http://www.linux-fbdev.org/
+
+
+10. Credits
+----------
+
+This readme was written by Geert Uytterhoeven, partly based on the original
+`X-framebuffer.README' by Roman Hodek and Martin Schaller. Section 6 was
+provided by Frank Neumann.
+
+The frame buffer device abstraction was designed by Martin Schaller.
diff --git a/Documentation/fb/gxfb.txt b/Documentation/fb/gxfb.txt
new file mode 100644
index 00000000..2f640903
--- /dev/null
+++ b/Documentation/fb/gxfb.txt
@@ -0,0 +1,52 @@
+[This file is cloned from VesaFB/aty128fb]
+
+What is gxfb?
+=================
+
+This is a graphics framebuffer driver for AMD Geode GX2 based processors.
+
+Advantages:
+
+ * No need to use AMD's VSA code (or other VESA emulation layer) in the
+ BIOS.
+ * It provides a nice large console (128 cols + 48 lines with 1024x768)
+ without using tiny, unreadable fonts.
+ * You can run XF68_FBDev on top of /dev/fb0
+ * Most important: boot logo :-)
+
+Disadvantages:
+
+ * graphic mode is slower than text mode...
+
+
+How to use it?
+==============
+
+Switching modes is done using gxfb.mode_option=<resolution>... boot
+parameter or using `fbset' program.
+
+See Documentation/fb/modedb.txt for more information on modedb
+resolutions.
+
+
+X11
+===
+
+XF68_FBDev should generally work fine, but it is non-accelerated.
+
+
+Configuration
+=============
+
+You can pass kernel command line options to gxfb with gxfb.<option>.
+For example, gxfb.mode_option=800x600@75.
+Accepted options:
+
+mode_option - specify the video mode. Of the form
+ <x>x<y>[-<bpp>][@<refresh>]
+vram - size of video ram (normally auto-detected)
+vt_switch - enable vt switching during suspend/resume. The vt
+ switch is slow, but harmless.
+
+--
+Andres Salomon <dilinger@debian.org>
diff --git a/Documentation/fb/intel810.txt b/Documentation/fb/intel810.txt
new file mode 100644
index 00000000..a8e9f5bc
--- /dev/null
+++ b/Documentation/fb/intel810.txt
@@ -0,0 +1,278 @@
+Intel 810/815 Framebuffer driver
+ Tony Daplas <adaplas@pol.net>
+ http://i810fb.sourceforge.net
+
+ March 17, 2002
+
+ First Released: July 2001
+ Last Update: September 12, 2005
+================================================================
+
+A. Introduction
+
+ This is a framebuffer driver for various Intel 810/815 compatible
+ graphics devices. These include:
+
+ Intel 810
+ Intel 810E
+ Intel 810-DC100
+ Intel 815 Internal graphics only, 100Mhz FSB
+ Intel 815 Internal graphics only
+ Intel 815 Internal graphics and AGP
+
+B. Features
+
+ - Choice of using Discrete Video Timings, VESA Generalized Timing
+ Formula, or a framebuffer specific database to set the video mode
+
+ - Supports a variable range of horizontal and vertical resolution and
+ vertical refresh rates if the VESA Generalized Timing Formula is
+ enabled.
+
+ - Supports color depths of 8, 16, 24 and 32 bits per pixel
+
+ - Supports pseudocolor, directcolor, or truecolor visuals
+
+ - Full and optimized hardware acceleration at 8, 16 and 24 bpp
+
+ - Robust video state save and restore
+
+ - MTRR support
+
+ - Utilizes user-entered monitor specifications to automatically
+ calculate required video mode parameters.
+
+ - Can concurrently run with xfree86 running with native i810 drivers
+
+ - Hardware Cursor Support
+
+ - Supports EDID probing either by DDC/I2C or through the BIOS
+
+C. List of available options
+
+ a. "video=i810fb"
+ enables the i810 driver
+
+ Recommendation: required
+
+ b. "xres:<value>"
+ select horizontal resolution in pixels. (This parameter will be
+ ignored if 'mode_option' is specified. See 'o' below).
+
+ Recommendation: user preference
+ (default = 640)
+
+ c. "yres:<value>"
+ select vertical resolution in scanlines. If Discrete Video Timings
+ is enabled, this will be ignored and computed as 3*xres/4. (This
+ parameter will be ignored if 'mode_option' is specified. See 'o'
+ below)
+
+ Recommendation: user preference
+ (default = 480)
+
+ d. "vyres:<value>"
+ select virtual vertical resolution in scanlines. If (0) or none
+ is specified, this will be computed against maximum available memory.
+
+ Recommendation: do not set
+ (default = 480)
+
+ e. "vram:<value>"
+ select amount of system RAM in MB to allocate for the video memory
+
+ Recommendation: 1 - 4 MB.
+ (default = 4)
+
+ f. "bpp:<value>"
+ select desired pixel depth
+
+ Recommendation: 8
+ (default = 8)
+
+ g. "hsync1/hsync2:<value>"
+ select the minimum and maximum Horizontal Sync Frequency of the
+ monitor in kHz. If using a fixed frequency monitor, hsync1 must
+ be equal to hsync2. If EDID probing is successful, these will be
+ ignored and values will be taken from the EDID block.
+
+ Recommendation: check monitor manual for correct values
+ (default = 29/30)
+
+ h. "vsync1/vsync2:<value>"
+ select the minimum and maximum Vertical Sync Frequency of the monitor
+ in Hz. You can also use this option to lock your monitor's refresh
+ rate. If EDID probing is successful, these will be ignored and values
+ will be taken from the EDID block.
+
+ Recommendation: check monitor manual for correct values
+ (default = 60/60)
+
+ IMPORTANT: If you need to clamp your timings, try to give some
+ leeway for computational errors (over/underflows). Example: if
+ using vsync1/vsync2 = 60/60, make sure hsync1/hsync2 has at least
+ a 1 unit difference, and vice versa.
+
+ i. "voffset:<value>"
+ select at what offset in MB of the logical memory to allocate the
+ framebuffer memory. The intent is to avoid the memory blocks
+ used by standard graphics applications (XFree86). The default
+ offset (16 MB for a 64 MB aperture, 8 MB for a 32 MB aperture) will
+ avoid XFree86's usage and allows up to 7 MB/15 MB of framebuffer
+ memory. Depending on your usage, adjust the value up or down
+ (0 for maximum usage, 31/63 MB for the least amount). Note, an
+ arbitrary setting may conflict with XFree86.
+
+ Recommendation: do not set
+ (default = 8 or 16 MB)
+
+ j. "accel"
+ enable text acceleration. This can be enabled/reenabled anytime
+ by using 'fbset -accel true/false'.
+
+ Recommendation: enable
+ (default = not set)
+
+ k. "mtrr"
+ enable MTRR. This allows data transfers to the framebuffer memory
+ to occur in bursts which can significantly increase performance.
+ Not very helpful with the i810/i815 because of 'shared memory'.
+
+ Recommendation: do not set
+ (default = not set)
+
+ l. "extvga"
+ if specified, secondary/external VGA output will always be enabled.
+ Useful if the BIOS turns off the VGA port when no monitor is attached.
+ The external VGA monitor can then be attached without rebooting.
+
+ Recommendation: do not set
+ (default = not set)
+
+ m. "sync"
+ Forces the hardware engine to do a "sync" or wait for the hardware
+ to finish before starting another instruction. This will produce a
+ more stable setup, but will be slower.
+
+ Recommendation: do not set
+ (default = not set)
+
+ n. "dcolor"
+ Use directcolor visual instead of truecolor for pixel depths greater
+ than 8 bpp. Useful for color tuning, such as gamma control.
+
+ Recommendation: do not set
+ (default = not set)
+
+ o. <xres>x<yres>[-<bpp>][@<refresh>]
+ The driver will now accept specification of boot mode option. If this
+ is specified, the options 'xres' and 'yres' will be ignored. See
+ Documentation/fb/modedb.txt for usage.
+
+D. Kernel booting
+
+Separate each option/option-pair by commas (,) and the option from its value
+with a colon (:) as in the following:
+
+video=i810fb:option1,option2:value2
+
+Sample Usage
+------------
+
+In /etc/lilo.conf, add the line:
+
+append="video=i810fb:vram:2,xres:1024,yres:768,bpp:8,hsync1:30,hsync2:55, \
+ vsync1:50,vsync2:85,accel,mtrr"
+
+This will initialize the framebuffer to 1024x768 at 8bpp. The framebuffer
+will use 2 MB of System RAM. MTRR support will be enabled. The refresh rate
+will be computed based on the hsync1/hsync2 and vsync1/vsync2 values.
+
+IMPORTANT:
+You must include hsync1, hsync2, vsync1 and vsync2 to enable video modes
+better than 640x480 at 60Hz. HOWEVER, if your chipset/display combination
+supports I2C and has an EDID block, you can safely exclude hsync1, hsync2,
+vsync1 and vsync2 parameters. These parameters will be taken from the EDID
+block.
+
+E. Module options
+
+The module parameters are essentially similar to the kernel
+parameters. The main difference is that you need to include a Boolean value
+(1 for TRUE, and 0 for FALSE) for those options which don't need a value.
+
+Example, to enable MTRR, include "mtrr=1".
+
+Sample Usage
+------------
+
+Using the same setup as described above, load the module like this:
+
+ modprobe i810fb vram=2 xres=1024 bpp=8 hsync1=30 hsync2=55 vsync1=50 \
+ vsync2=85 accel=1 mtrr=1
+
+Or just add the following to a configuration file in /etc/modprobe.d/
+
+ options i810fb vram=2 xres=1024 bpp=16 hsync1=30 hsync2=55 vsync1=50 \
+ vsync2=85 accel=1 mtrr=1
+
+and just do a
+
+ modprobe i810fb
+
+
+F. Setup
+
+ a. Do your usual method of configuring the kernel.
+
+ make menuconfig/xconfig/config
+
+ b. Under "Code maturity level options" enable "Prompt for development
+ and/or incomplete code/drivers".
+
+ c. Enable agpgart support for the Intel 810/815 on-board graphics.
+ This is required. The option is under "Character Devices".
+
+ d. Under "Graphics Support", select "Intel 810/815" either statically
+ or as a module. Choose "use VESA Generalized Timing Formula" if
+ you need to maximize the capability of your display. To be on the
+ safe side, you can leave this unselected.
+
+ e. If you want support for DDC/I2C probing (Plug and Play Displays),
+ set 'Enable DDC Support' to 'y'. To make this option appear, set
+ 'use VESA Generalized Timing Formula' to 'y'.
+
+ f. If you want a framebuffer console, enable it under "Console
+ Drivers".
+
+ g. Compile your kernel.
+
+ h. Load the driver as described in sections D and E.
+
+ i. Try the DirectFB (http://www.directfb.org) + the i810 gfxdriver
+ patch to see the chipset in action (or inaction :-).
+
+G. Acknowledgment:
+
+ 1. Geert Uytterhoeven - his excellent howto and the virtual
+ framebuffer driver code made this possible.
+
+ 2. Jeff Hartmann for his agpgart code.
+
+ 3. The X developers. Insights were provided just by reading the
+ XFree86 source code.
+
+ 4. Intel(c). For this value-oriented chipset driver and for
+ providing documentation.
+
+ 5. Matt Sottek. His inputs and ideas helped in making some
+ optimizations possible.
+
+H. Home Page:
+
+ A more complete, and probably updated information is provided at
+ http://i810fb.sourceforge.net.
+
+###########################
+Tony
+
diff --git a/Documentation/fb/intelfb.txt b/Documentation/fb/intelfb.txt
new file mode 100644
index 00000000..feac4e4d
--- /dev/null
+++ b/Documentation/fb/intelfb.txt
@@ -0,0 +1,149 @@
+Intel 830M/845G/852GM/855GM/865G/915G/945G Framebuffer driver
+================================================================
+
+A. Introduction
+ This is a framebuffer driver for various Intel 8xx/9xx compatible
+graphics devices. These would include:
+
+ Intel 830M
+ Intel 845G
+ Intel 852GM
+ Intel 855GM
+ Intel 865G
+ Intel 915G
+ Intel 915GM
+ Intel 945G
+ Intel 945GM
+ Intel 945GME
+ Intel 965G
+ Intel 965GM
+
+B. List of available options
+
+ a. "video=intelfb"
+ enables the intelfb driver
+
+ Recommendation: required
+
+ b. "mode=<xres>x<yres>[-<bpp>][@<refresh>]"
+ select mode
+
+ Recommendation: user preference
+ (default = 1024x768-32@70)
+
+ c. "vram=<value>"
+ select amount of system RAM in MB to allocate for the video memory
+ if not enough RAM was already allocated by the BIOS.
+
+ Recommendation: 1 - 4 MB.
+ (default = 4 MB)
+
+ d. "voffset=<value>"
+ select at what offset in MB of the logical memory to allocate the
+ framebuffer memory. The intent is to avoid the memory blocks
+ used by standard graphics applications (XFree86). Depending on your
+ usage, adjust the value up or down, (0 for maximum usage, 63/127 MB
+ for the least amount). Note, an arbitrary setting may conflict
+ with XFree86.
+
+ Recommendation: do not set
+ (default = 48 MB)
+
+ e. "accel"
+ enable text acceleration. This can be enabled/reenabled anytime
+ by using 'fbset -accel true/false'.
+
+ Recommendation: enable
+ (default = set)
+
+ f. "hwcursor"
+ enable cursor acceleration.
+
+ Recommendation: enable
+ (default = set)
+
+ g. "mtrr"
+ enable MTRR. This allows data transfers to the framebuffer memory
+ to occur in bursts which can significantly increase performance.
+ Not very helpful with the intel chips because of 'shared memory'.
+
+ Recommendation: set
+ (default = set)
+
+ h. "fixed"
+ disable mode switching.
+
+ Recommendation: do not set
+ (default = not set)
+
+ The binary parameters can be unset with a "no" prefix, example "noaccel".
+ The default parameter (not named) is the mode.
+
+C. Kernel booting
+
+Separate each option/option-pair by commas (,) and the option from its value
+with an equals sign (=) as in the following:
+
+video=intelfb:option1,option2=value2
+
+Sample Usage
+------------
+
+In /etc/lilo.conf, add the line:
+
+append="video=intelfb:mode=800x600-32@75,accel,hwcursor,vram=8"
+
+This will initialize the framebuffer to 800x600 at 32bpp and 75Hz. The
+framebuffer will use 8 MB of System RAM. hw acceleration of text and cursor
+will be enabled.
+
+Remarks
+-------
+
+If setting this parameter doesn't work (you stay in a 80x25 text-mode),
+you might need to set the "vga=<mode>" parameter too - see vesafb.txt
+in this directory.
+
+
+D. Module options
+
+ The module parameters are essentially similar to the kernel
+parameters. The main difference is that you need to include a Boolean value
+(1 for TRUE, and 0 for FALSE) for those options which don't need a value.
+
+Example, to enable MTRR, include "mtrr=1".
+
+Sample Usage
+------------
+
+Using the same setup as described above, load the module like this:
+
+ modprobe intelfb mode=800x600-32@75 vram=8 accel=1 hwcursor=1
+
+Or just add the following to a configuration file in /etc/modprobe.d/
+
+ options intelfb mode=800x600-32@75 vram=8 accel=1 hwcursor=1
+
+and just do a
+
+ modprobe intelfb
+
+
+E. Acknowledgment:
+
+ 1. Geert Uytterhoeven - his excellent howto and the virtual
+ framebuffer driver code made this possible.
+
+ 2. Jeff Hartmann for his agpgart code.
+
+ 3. David Dawes for his original kernel 2.4 code.
+
+ 4. The X developers. Insights were provided just by reading the
+ XFree86 source code.
+
+ 5. Antonino A. Daplas for his inspiring i810fb driver.
+
+ 6. Andrew Morton for his kernel patches maintenance.
+
+###########################
+Sylvain
diff --git a/Documentation/fb/internals.txt b/Documentation/fb/internals.txt
new file mode 100644
index 00000000..9b2a2b2f
--- /dev/null
+++ b/Documentation/fb/internals.txt
@@ -0,0 +1,82 @@
+
+This is a first start for some documentation about frame buffer device
+internals.
+
+Geert Uytterhoeven <geert@linux-m68k.org>, 21 July 1998
+James Simmons <jsimmons@user.sf.net>, Nov 26 2002
+
+--------------------------------------------------------------------------------
+
+ *** STRUCTURES USED BY THE FRAME BUFFER DEVICE API ***
+
+The following structures play a role in the game of frame buffer devices. They
+are defined in <linux/fb.h>.
+
+1. Outside the kernel (user space)
+
+ - struct fb_fix_screeninfo
+
+ Device independent unchangeable information about a frame buffer device and
+ a specific video mode. This can be obtained using the FBIOGET_FSCREENINFO
+ ioctl.
+
+ - struct fb_var_screeninfo
+
+ Device independent changeable information about a frame buffer device and a
+ specific video mode. This can be obtained using the FBIOGET_VSCREENINFO
+ ioctl, and updated with the FBIOPUT_VSCREENINFO ioctl. If you want to pan
+ the screen only, you can use the FBIOPAN_DISPLAY ioctl.
+
+ - struct fb_cmap
+
+ Device independent colormap information. You can get and set the colormap
+ using the FBIOGETCMAP and FBIOPUTCMAP ioctls.
+
+
+2. Inside the kernel
+
+ - struct fb_info
+
+ Generic information, API and low level information about a specific frame
+ buffer device instance (slot number, board address, ...).
+
+ - struct `par'
+
+ Device dependent information that uniquely defines the video mode for this
+ particular piece of hardware.
+
+
+--------------------------------------------------------------------------------
+
+ *** VISUALS USED BY THE FRAME BUFFER DEVICE API ***
+
+
+Monochrome (FB_VISUAL_MONO01 and FB_VISUAL_MONO10)
+-------------------------------------------------
+Each pixel is either black or white.
+
+
+Pseudo color (FB_VISUAL_PSEUDOCOLOR and FB_VISUAL_STATIC_PSEUDOCOLOR)
+---------------------------------------------------------------------
+The whole pixel value is fed through a programmable lookup table that has one
+color (including red, green, and blue intensities) for each possible pixel
+value, and that color is displayed.
+
+
+True color (FB_VISUAL_TRUECOLOR)
+--------------------------------
+The pixel value is broken up into red, green, and blue fields.
+
+
+Direct color (FB_VISUAL_DIRECTCOLOR)
+------------------------------------
+The pixel value is broken up into red, green, and blue fields, each of which
+are looked up in separate red, green, and blue lookup tables.
+
+
+Grayscale displays
+------------------
+Grayscale and static grayscale are special variants of pseudo color and static
+pseudo color, where the red, green and blue components are always equal to
+each other.
+
diff --git a/Documentation/fb/lxfb.txt b/Documentation/fb/lxfb.txt
new file mode 100644
index 00000000..38b3ca6f
--- /dev/null
+++ b/Documentation/fb/lxfb.txt
@@ -0,0 +1,52 @@
+[This file is cloned from VesaFB/aty128fb]
+
+What is lxfb?
+=================
+
+This is a graphics framebuffer driver for AMD Geode LX based processors.
+
+Advantages:
+
+ * No need to use AMD's VSA code (or other VESA emulation layer) in the
+ BIOS.
+ * It provides a nice large console (128 cols + 48 lines with 1024x768)
+ without using tiny, unreadable fonts.
+ * You can run XF68_FBDev on top of /dev/fb0
+ * Most important: boot logo :-)
+
+Disadvantages:
+
+ * graphic mode is slower than text mode...
+
+
+How to use it?
+==============
+
+Switching modes is done using lxfb.mode_option=<resolution>... boot
+parameter or using `fbset' program.
+
+See Documentation/fb/modedb.txt for more information on modedb
+resolutions.
+
+
+X11
+===
+
+XF68_FBDev should generally work fine, but it is non-accelerated.
+
+
+Configuration
+=============
+
+You can pass kernel command line options to lxfb with lxfb.<option>.
+For example, lxfb.mode_option=800x600@75.
+Accepted options:
+
+mode_option - specify the video mode. Of the form
+ <x>x<y>[-<bpp>][@<refresh>]
+vram - size of video ram (normally auto-detected)
+vt_switch - enable vt switching during suspend/resume. The vt
+ switch is slow, but harmless.
+
+--
+Andres Salomon <dilinger@debian.org>
diff --git a/Documentation/fb/matroxfb.txt b/Documentation/fb/matroxfb.txt
new file mode 100644
index 00000000..b95f5bb5
--- /dev/null
+++ b/Documentation/fb/matroxfb.txt
@@ -0,0 +1,413 @@
+[This file is cloned from VesaFB. Thanks go to Gerd Knorr]
+
+What is matroxfb?
+=================
+
+This is a driver for a graphic framebuffer for Matrox devices on
+Alpha, Intel and PPC boxes.
+
+Advantages:
+
+ * It provides a nice large console (128 cols + 48 lines with 1024x768)
+ without using tiny, unreadable fonts.
+ * You can run XF{68,86}_FBDev or XFree86 fbdev driver on top of /dev/fb0
+ * Most important: boot logo :-)
+
+Disadvantages:
+
+ * graphic mode is slower than text mode... but you should not notice
+ if you use same resolution as you used in textmode.
+
+
+How to use it?
+==============
+
+Switching modes is done using the video=matroxfb:vesa:... boot parameter
+or using `fbset' program.
+
+If you want, for example, enable a resolution of 1280x1024x24bpp you should
+pass to the kernel this command line: "video=matroxfb:vesa:0x1BB".
+
+You should compile in both vgacon (to boot if you remove you Matrox from
+box) and matroxfb (for graphics mode). You should not compile-in vesafb
+unless you have primary display on non-Matrox VBE2.0 device (see
+Documentation/fb/vesafb.txt for details).
+
+Currently supported video modes are (through vesa:... interface, PowerMac
+has [as addon] compatibility code):
+
+
+[Graphic modes]
+
+bpp | 640x400 640x480 768x576 800x600 960x720
+----+--------------------------------------------
+ 4 | 0x12 0x102
+ 8 | 0x100 0x101 0x180 0x103 0x188
+ 15 | 0x110 0x181 0x113 0x189
+ 16 | 0x111 0x182 0x114 0x18A
+ 24 | 0x1B2 0x184 0x1B5 0x18C
+ 32 | 0x112 0x183 0x115 0x18B
+
+
+[Graphic modes (continued)]
+
+bpp | 1024x768 1152x864 1280x1024 1408x1056 1600x1200
+----+------------------------------------------------
+ 4 | 0x104 0x106
+ 8 | 0x105 0x190 0x107 0x198 0x11C
+ 15 | 0x116 0x191 0x119 0x199 0x11D
+ 16 | 0x117 0x192 0x11A 0x19A 0x11E
+ 24 | 0x1B8 0x194 0x1BB 0x19C 0x1BF
+ 32 | 0x118 0x193 0x11B 0x19B
+
+
+[Text modes]
+
+text | 640x400 640x480 1056x344 1056x400 1056x480
+-----+------------------------------------------------
+ 8x8 | 0x1C0 0x108 0x10A 0x10B 0x10C
+8x16 | 2, 3, 7 0x109
+
+You can enter these number either hexadecimal (leading `0x') or decimal
+(0x100 = 256). You can also use value + 512 to achieve compatibility
+with your old number passed to vesafb.
+
+Non-listed number can be achieved by more complicated command-line, for
+example 1600x1200x32bpp can be specified by `video=matroxfb:vesa:0x11C,depth:32'.
+
+
+X11
+===
+
+XF{68,86}_FBDev should work just fine, but it is non-accelerated. On non-intel
+architectures there are some glitches for 24bpp videomodes. 8, 16 and 32bpp
+works fine.
+
+Running another (accelerated) X-Server like XF86_SVGA works too. But (at least)
+XFree servers have big troubles in multihead configurations (even on first
+head, not even talking about second). Running XFree86 4.x accelerated mga
+driver is possible, but you must not enable DRI - if you do, resolution and
+color depth of your X desktop must match resolution and color depths of your
+virtual consoles, otherwise X will corrupt accelerator settings.
+
+
+SVGALib
+=======
+
+Driver contains SVGALib compatibility code. It is turned on by choosing textual
+mode for console. You can do it at boot time by using videomode
+2,3,7,0x108-0x10C or 0x1C0. At runtime, `fbset -depth 0' does this work.
+Unfortunately, after SVGALib application exits, screen contents is corrupted.
+Switching to another console and back fixes it. I hope that it is SVGALib's
+problem and not mine, but I'm not sure.
+
+
+Configuration
+=============
+
+You can pass kernel command line options to matroxfb with
+`video=matroxfb:option1,option2:value2,option3' (multiple options should be
+separated by comma, values are separated from options by `:').
+Accepted options:
+
+mem:X - size of memory (X can be in megabytes, kilobytes or bytes)
+ You can only decrease value determined by driver because of
+ it always probe for memory. Default is to use whole detected
+ memory usable for on-screen display (i.e. max. 8 MB).
+disabled - do not load driver; you can use also `off', but `disabled'
+ is here too.
+enabled - load driver, if you have `video=matroxfb:disabled' in LILO
+ configuration, you can override it by this (you cannot override
+ `off'). It is default.
+noaccel - do not use acceleration engine. It does not work on Alphas.
+accel - use acceleration engine. It is default.
+nopan - create initial consoles with vyres = yres, thus disabling virtual
+ scrolling.
+pan - create initial consoles as tall as possible (vyres = memory/vxres).
+ It is default.
+nopciretry - disable PCI retries. It is needed for some broken chipsets,
+ it is autodetected for intel's 82437. In this case device does
+ not comply to PCI 2.1 specs (it will not guarantee that every
+ transaction terminate with success or retry in 32 PCLK).
+pciretry - enable PCI retries. It is default, except for intel's 82437.
+novga - disables VGA I/O ports. It is default if BIOS did not enable device.
+ You should not use this option, some boards then do not restart
+ without power off.
+vga - preserve state of VGA I/O ports. It is default. Driver does not
+ enable VGA I/O if BIOS did not it (it is not safe to enable it in
+ most cases).
+nobios - disables BIOS ROM. It is default if BIOS did not enable BIOS itself.
+ You should not use this option, some boards then do not restart
+ without power off.
+bios - preserve state of BIOS ROM. It is default. Driver does not enable
+ BIOS if BIOS was not enabled before.
+noinit - tells driver, that devices were already initialized. You should use
+ it if you have G100 and/or if driver cannot detect memory, you see
+ strange pattern on screen and so on. Devices not enabled by BIOS
+ are still initialized. It is default.
+init - driver initializes every device it knows about.
+memtype - specifies memory type, implies 'init'. This is valid only for G200
+ and G400 and has following meaning:
+ G200: 0 -> 2x128Kx32 chips, 2MB onboard, probably sgram
+ 1 -> 2x128Kx32 chips, 4MB onboard, probably sgram
+ 2 -> 2x256Kx32 chips, 4MB onboard, probably sgram
+ 3 -> 2x256Kx32 chips, 8MB onboard, probably sgram
+ 4 -> 2x512Kx16 chips, 8/16MB onboard, probably sdram only
+ 5 -> same as above
+ 6 -> 4x128Kx32 chips, 4MB onboard, probably sgram
+ 7 -> 4x128Kx32 chips, 8MB onboard, probably sgram
+ G400: 0 -> 2x512Kx16 SDRAM, 16/32MB
+ 2x512Kx32 SGRAM, 16/32MB
+ 1 -> 2x256Kx32 SGRAM, 8/16MB
+ 2 -> 4x128Kx32 SGRAM, 8/16MB
+ 3 -> 4x512Kx32 SDRAM, 32MB
+ 4 -> 4x256Kx32 SGRAM, 16/32MB
+ 5 -> 2x1Mx32 SDRAM, 32MB
+ 6 -> reserved
+ 7 -> reserved
+ You should use sdram or sgram parameter in addition to memtype
+ parameter.
+nomtrr - disables write combining on frame buffer. This slows down driver but
+ there is reported minor incompatibility between GUS DMA and XFree
+ under high loads if write combining is enabled (sound dropouts).
+mtrr - enables write combining on frame buffer. It speeds up video accesses
+ much. It is default. You must have MTRR support enabled in kernel
+ and your CPU must have MTRR (f.e. Pentium II have them).
+sgram - tells to driver that you have Gxx0 with SGRAM memory. It has no
+ effect without `init'.
+sdram - tells to driver that you have Gxx0 with SDRAM memory.
+ It is a default.
+inv24 - change timings parameters for 24bpp modes on Millennium and
+ Millennium II. Specify this if you see strange color shadows around
+ characters.
+noinv24 - use standard timings. It is the default.
+inverse - invert colors on screen (for LCD displays)
+noinverse - show true colors on screen. It is default.
+dev:X - bind driver to device X. Driver numbers device from 0 up to N,
+ where device 0 is first `known' device found, 1 second and so on.
+ lspci lists devices in this order.
+ Default is `every' known device.
+nohwcursor - disables hardware cursor (use software cursor instead).
+hwcursor - enables hardware cursor. It is default. If you are using
+ non-accelerated mode (`noaccel' or `fbset -accel false'), software
+ cursor is used (except for text mode).
+noblink - disables cursor blinking. Cursor in text mode always blinks (hw
+ limitation).
+blink - enables cursor blinking. It is default.
+nofastfont - disables fastfont feature. It is default.
+fastfont:X - enables fastfont feature. X specifies size of memory reserved for
+ font data, it must be >= (fontwidth*fontheight*chars_in_font)/8.
+ It is faster on Gx00 series, but slower on older cards.
+grayscale - enable grayscale summing. It works in PSEUDOCOLOR modes (text,
+ 4bpp, 8bpp). In DIRECTCOLOR modes it is limited to characters
+ displayed through putc/putcs. Direct accesses to framebuffer
+ can paint colors.
+nograyscale - disable grayscale summing. It is default.
+cross4MB - enables that pixel line can cross 4MB boundary. It is default for
+ non-Millennium.
+nocross4MB - pixel line must not cross 4MB boundary. It is default for
+ Millennium I or II, because of these devices have hardware
+ limitations which do not allow this. But this option is
+ incompatible with some (if not all yet released) versions of
+ XF86_FBDev.
+dfp - enables digital flat panel interface. This option is incompatible with
+ secondary (TV) output - if DFP is active, TV output must be
+ inactive and vice versa. DFP always uses same timing as primary
+ (monitor) output.
+dfp:X - use settings X for digital flat panel interface. X is number from
+ 0 to 0xFF, and meaning of each individual bit is described in
+ G400 manual, in description of DAC register 0x1F. For normal operation
+ you should set all bits to zero, except lowest bit. This lowest bit
+ selects who is source of display clocks, whether G400, or panel.
+ Default value is now read back from hardware - so you should specify
+ this value only if you are also using `init' parameter.
+outputs:XYZ - set mapping between CRTC and outputs. Each letter can have value
+ of 0 (for no CRTC), 1 (CRTC1) or 2 (CRTC2), and first letter corresponds
+ to primary analog output, second letter to the secondary analog output
+ and third letter to the DVI output. Default setting is 100 for
+ cards below G400 or G400 without DFP, 101 for G400 with DFP, and
+ 111 for G450 and G550. You can set mapping only on first card,
+ use matroxset for setting up other devices.
+vesa:X - selects startup videomode. X is number from 0 to 0x1FF, see table
+ above for detailed explanation. Default is 640x480x8bpp if driver
+ has 8bpp support. Otherwise first available of 640x350x4bpp,
+ 640x480x15bpp, 640x480x24bpp, 640x480x32bpp or 80x25 text
+ (80x25 text is always available).
+
+If you are not satisfied with videomode selected by `vesa' option, you
+can modify it with these options:
+
+xres:X - horizontal resolution, in pixels. Default is derived from `vesa'
+ option.
+yres:X - vertical resolution, in pixel lines. Default is derived from `vesa'
+ option.
+upper:X - top boundary: lines between end of VSYNC pulse and start of first
+ pixel line of picture. Default is derived from `vesa' option.
+lower:X - bottom boundary: lines between end of picture and start of VSYNC
+ pulse. Default is derived from `vesa' option.
+vslen:X - length of VSYNC pulse, in lines. Default is derived from `vesa'
+ option.
+left:X - left boundary: pixels between end of HSYNC pulse and first pixel.
+ Default is derived from `vesa' option.
+right:X - right boundary: pixels between end of picture and start of HSYNC
+ pulse. Default is derived from `vesa' option.
+hslen:X - length of HSYNC pulse, in pixels. Default is derived from `vesa'
+ option.
+pixclock:X - dotclocks, in ps (picoseconds). Default is derived from `vesa'
+ option and from `fh' and `fv' options.
+sync:X - sync. pulse - bit 0 inverts HSYNC polarity, bit 1 VSYNC polarity.
+ If bit 3 (value 0x08) is set, composite sync instead of HSYNC is
+ generated. If bit 5 (value 0x20) is set, sync on green is turned on.
+ Do not forget that if you want sync on green, you also probably
+ want composite sync.
+ Default depends on `vesa'.
+depth:X - Bits per pixel: 0=text, 4,8,15,16,24 or 32. Default depends on
+ `vesa'.
+
+If you know capabilities of your monitor, you can specify some (or all) of
+`maxclk', `fh' and `fv'. In this case, `pixclock' is computed so that
+pixclock <= maxclk, real_fh <= fh and real_fv <= fv.
+
+maxclk:X - maximum dotclock. X can be specified in MHz, kHz or Hz. Default is
+ `don't care'.
+fh:X - maximum horizontal synchronization frequency. X can be specified
+ in kHz or Hz. Default is `don't care'.
+fv:X - maximum vertical frequency. X must be specified in Hz. Default is
+ 70 for modes derived from `vesa' with yres <= 400, 60Hz for
+ yres > 400.
+
+
+Limitations
+===========
+
+There are known and unknown bugs, features and misfeatures.
+Currently there are following known bugs:
+ + SVGALib does not restore screen on exit
+ + generic fbcon-cfbX procedures do not work on Alphas. Due to this,
+ `noaccel' (and cfb4 accel) driver does not work on Alpha. So everyone
+ with access to /dev/fb* on Alpha can hang machine (you should restrict
+ access to /dev/fb* - everyone with access to this device can destroy
+ your monitor, believe me...).
+ + 24bpp does not support correctly XF-FBDev on big-endian architectures.
+ + interlaced text mode is not supported; it looks like hardware limitation,
+ but I'm not sure.
+ + Gxx0 SGRAM/SDRAM is not autodetected.
+ + If you are using more than one framebuffer device, you must boot kernel
+ with 'video=scrollback:0'.
+ + maybe more...
+And following misfeatures:
+ + SVGALib does not restore screen on exit.
+ + pixclock for text modes is limited by hardware to
+ 83 MHz on G200
+ 66 MHz on Millennium I
+ 60 MHz on Millennium II
+ Because I have no access to other devices, I do not know specific
+ frequencies for them. So driver does not check this and allows you to
+ set frequency higher that this. It causes sparks, black holes and other
+ pretty effects on screen. Device was not destroyed during tests. :-)
+ + my Millennium G200 oscillator has frequency range from 35 MHz to 380 MHz
+ (and it works with 8bpp on about 320 MHz dotclocks (and changed mclk)).
+ But Matrox says on product sheet that VCO limit is 50-250 MHz, so I believe
+ them (maybe that chip overheats, but it has a very big cooler (G100 has
+ none), so it should work).
+ + special mixed video/graphics videomodes of Mystique and Gx00 - 2G8V16 and
+ G16V16 are not supported
+ + color keying is not supported
+ + feature connector of Mystique and Gx00 is set to VGA mode (it is disabled
+ by BIOS)
+ + DDC (monitor detection) is supported through dualhead driver
+ + some check for input values are not so strict how it should be (you can
+ specify vslen=4000 and so on).
+ + maybe more...
+And following features:
+ + 4bpp is available only on Millennium I and Millennium II. It is hardware
+ limitation.
+ + selection between 1:5:5:5 and 5:6:5 16bpp videomode is done by -rgba
+ option of fbset: "fbset -depth 16 -rgba 5,5,5" selects 1:5:5:5, anything
+ else selects 5:6:5 mode.
+ + text mode uses 6 bit VGA palette instead of 8 bit (one of 262144 colors
+ instead of one of 16M colors). It is due to hardware limitation of
+ Millennium I/II and SVGALib compatibility.
+
+
+Benchmarks
+==========
+It is time to redraw whole screen 1000 times in 1024x768, 60Hz. It is
+time for draw 6144000 characters on screen through /dev/vcsa
+(for 32bpp it is about 3GB of data (exactly 3000 MB); for 8x16 font in
+16 seconds, i.e. 187 MBps).
+Times were obtained from one older version of driver, now they are about 3%
+faster, it is kernel-space only time on P-II/350 MHz, Millennium I in 33 MHz
+PCI slot, G200 in AGP 2x slot. I did not test vgacon.
+
+NOACCEL
+ 8x16 12x22
+ Millennium I G200 Millennium I G200
+8bpp 16.42 9.54 12.33 9.13
+16bpp 21.00 15.70 19.11 15.02
+24bpp 36.66 36.66 35.00 35.00
+32bpp 35.00 30.00 33.85 28.66
+
+ACCEL, nofastfont
+ 8x16 12x22 6x11
+ Millennium I G200 Millennium I G200 Millennium I G200
+8bpp 7.79 7.24 13.55 7.78 30.00 21.01
+16bpp 9.13 7.78 16.16 7.78 30.00 21.01
+24bpp 14.17 10.72 18.69 10.24 34.99 21.01
+32bpp 16.15 16.16 18.73 13.09 34.99 21.01
+
+ACCEL, fastfont
+ 8x16 12x22 6x11
+ Millennium I G200 Millennium I G200 Millennium I G200
+8bpp 8.41 6.01 6.54 4.37 16.00 10.51
+16bpp 9.54 9.12 8.76 6.17 17.52 14.01
+24bpp 15.00 12.36 11.67 10.00 22.01 18.32
+32bpp 16.18 18.29* 12.71 12.74 24.44 21.00
+
+TEXT
+ 8x16
+ Millennium I G200
+TEXT 3.29 1.50
+
+* Yes, it is slower than Millennium I.
+
+
+Dualhead G400
+=============
+Driver supports dualhead G400 with some limitations:
+ + secondary head shares videomemory with primary head. It is not problem
+ if you have 32MB of videoram, but if you have only 16MB, you may have
+ to think twice before choosing videomode (for example twice 1880x1440x32bpp
+ is not possible).
+ + due to hardware limitation, secondary head can use only 16 and 32bpp
+ videomodes.
+ + secondary head is not accelerated. There were bad problems with accelerated
+ XFree when secondary head used to use acceleration.
+ + secondary head always powerups in 640x480@60-32 videomode. You have to use
+ fbset to change this mode.
+ + secondary head always powerups in monitor mode. You have to use fbmatroxset
+ to change it to TV mode. Also, you must select at least 525 lines for
+ NTSC output and 625 lines for PAL output.
+ + kernel is not fully multihead ready. So some things are impossible to do.
+ + if you compiled it as module, you must insert i2c-matroxfb, matroxfb_maven
+ and matroxfb_crtc2 into kernel.
+
+
+Dualhead G450
+=============
+Driver supports dualhead G450 with some limitations:
+ + secondary head shares videomemory with primary head. It is not problem
+ if you have 32MB of videoram, but if you have only 16MB, you may have
+ to think twice before choosing videomode.
+ + due to hardware limitation, secondary head can use only 16 and 32bpp
+ videomodes.
+ + secondary head is not accelerated.
+ + secondary head always powerups in 640x480@60-32 videomode. You have to use
+ fbset to change this mode.
+ + TV output is not supported
+ + kernel is not fully multihead ready, so some things are impossible to do.
+ + if you compiled it as module, you must insert matroxfb_g450 and matroxfb_crtc2
+ into kernel.
+
+--
+Petr Vandrovec <vandrove@vc.cvut.cz>
diff --git a/Documentation/fb/metronomefb.txt b/Documentation/fb/metronomefb.txt
new file mode 100644
index 00000000..237ca412
--- /dev/null
+++ b/Documentation/fb/metronomefb.txt
@@ -0,0 +1,36 @@
+ Metronomefb
+ -----------
+Maintained by Jaya Kumar <jayakumar.lkml.gmail.com>
+Last revised: Mar 10, 2008
+
+Metronomefb is a driver for the Metronome display controller. The controller
+is from E-Ink Corporation. It is intended to be used to drive the E-Ink
+Vizplex display media. E-Ink hosts some details of this controller and the
+display media here http://www.e-ink.com/products/matrix/metronome.html .
+
+Metronome is interfaced to the host CPU through the AMLCD interface. The
+host CPU generates the control information and the image in a framebuffer
+which is then delivered to the AMLCD interface by a host specific method.
+The display and error status are each pulled through individual GPIOs.
+
+Metronomefb is platform independent and depends on a board specific driver
+to do all physical IO work. Currently, an example is implemented for the
+PXA board used in the AM-200 EPD devkit. This example is am200epd.c
+
+Metronomefb requires waveform information which is delivered via the AMLCD
+interface to the metronome controller. The waveform information is expected to
+be delivered from userspace via the firmware class interface. The waveform file
+can be compressed as long as your udev or hotplug script is aware of the need
+to uncompress it before delivering it. metronomefb will ask for metronome.wbf
+which would typically go into /lib/firmware/metronome.wbf depending on your
+udev/hotplug setup. I have only tested with a single waveform file which was
+originally labeled 23P01201_60_WT0107_MTC. I do not know what it stands for.
+Caution should be exercised when manipulating the waveform as there may be
+a possibility that it could have some permanent effects on the display media.
+I neither have access to nor know exactly what the waveform does in terms of
+the physical media.
+
+Metronomefb uses the deferred IO interface so that it can provide a memory
+mappable frame buffer. It has been tested with tinyx (Xfbdev). It is known
+to work at this time with xeyes, xclock, xloadimage, xpdf.
+
diff --git a/Documentation/fb/modedb.txt b/Documentation/fb/modedb.txt
new file mode 100644
index 00000000..16aa0845
--- /dev/null
+++ b/Documentation/fb/modedb.txt
@@ -0,0 +1,151 @@
+
+
+ modedb default video mode support
+
+
+Currently all frame buffer device drivers have their own video mode databases,
+which is a mess and a waste of resources. The main idea of modedb is to have
+
+ - one routine to probe for video modes, which can be used by all frame buffer
+ devices
+ - one generic video mode database with a fair amount of standard videomodes
+ (taken from XFree86)
+ - the possibility to supply your own mode database for graphics hardware that
+ needs non-standard modes, like amifb and Mac frame buffer drivers (which
+ use macmodes.c)
+
+When a frame buffer device receives a video= option it doesn't know, it should
+consider that to be a video mode option. If no frame buffer device is specified
+in a video= option, fbmem considers that to be a global video mode option.
+
+Valid mode specifiers (mode_option argument):
+
+ <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd]
+ <name>[-<bpp>][@<refresh>]
+
+with <xres>, <yres>, <bpp> and <refresh> decimal numbers and <name> a string.
+Things between square brackets are optional.
+
+If 'M' is specified in the mode_option argument (after <yres> and before
+<bpp> and <refresh>, if specified) the timings will be calculated using
+VESA(TM) Coordinated Video Timings instead of looking up the mode from a table.
+If 'R' is specified, do a 'reduced blanking' calculation for digital displays.
+If 'i' is specified, calculate for an interlaced mode. And if 'm' is
+specified, add margins to the calculation (1.8% of xres rounded down to 8
+pixels and 1.8% of yres).
+
+ Sample usage: 1024x768M@60m - CVT timing with margins
+
+DRM drivers also add options to enable or disable outputs:
+
+'e' will force the display to be enabled, i.e. it will override the detection
+if a display is connected. 'D' will force the display to be enabled and use
+digital output. This is useful for outputs that have both analog and digital
+signals (e.g. HDMI and DVI-I). For other outputs it behaves like 'e'. If 'd'
+is specified the output is disabled.
+
+You can additionally specify which output the options matches to.
+To force the VGA output to be enabled and drive a specific mode say:
+ video=VGA-1:1280x1024@60me
+
+Specifying the option multiple times for different ports is possible, e.g.:
+ video=LVDS-1:d video=HDMI-1:D
+
+***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo *****
+
+What is the VESA(TM) Coordinated Video Timings (CVT)?
+
+From the VESA(TM) Website:
+
+ "The purpose of CVT is to provide a method for generating a consistent
+ and coordinated set of standard formats, display refresh rates, and
+ timing specifications for computer display products, both those
+ employing CRTs, and those using other display technologies. The
+ intention of CVT is to give both source and display manufacturers a
+ common set of tools to enable new timings to be developed in a
+ consistent manner that ensures greater compatibility."
+
+This is the third standard approved by VESA(TM) concerning video timings. The
+first was the Discrete Video Timings (DVT) which is a collection of
+pre-defined modes approved by VESA(TM). The second is the Generalized Timing
+Formula (GTF) which is an algorithm to calculate the timings, given the
+pixelclock, the horizontal sync frequency, or the vertical refresh rate.
+
+The GTF is limited by the fact that it is designed mainly for CRT displays.
+It artificially increases the pixelclock because of its high blanking
+requirement. This is inappropriate for digital display interface with its high
+data rate which requires that it conserves the pixelclock as much as possible.
+Also, GTF does not take into account the aspect ratio of the display.
+
+The CVT addresses these limitations. If used with CRT's, the formula used
+is a derivation of GTF with a few modifications. If used with digital
+displays, the "reduced blanking" calculation can be used.
+
+From the framebuffer subsystem perspective, new formats need not be added
+to the global mode database whenever a new mode is released by display
+manufacturers. Specifying for CVT will work for most, if not all, relatively
+new CRT displays and probably with most flatpanels, if 'reduced blanking'
+calculation is specified. (The CVT compatibility of the display can be
+determined from its EDID. The version 1.3 of the EDID has extra 128-byte
+blocks where additional timing information is placed. As of this time, there
+is no support yet in the layer to parse this additional blocks.)
+
+CVT also introduced a new naming convention (should be seen from dmesg output):
+
+ <pix>M<a>[-R]
+
+ where: pix = total amount of pixels in MB (xres x yres)
+ M = always present
+ a = aspect ratio (3 - 4:3; 4 - 5:4; 9 - 15:9, 16:9; A - 16:10)
+ -R = reduced blanking
+
+ example: .48M3-R - 800x600 with reduced blanking
+
+Note: VESA(TM) has restrictions on what is a standard CVT timing:
+
+ - aspect ratio can only be one of the above values
+ - acceptable refresh rates are 50, 60, 70 or 85 Hz only
+ - if reduced blanking, the refresh rate must be at 60Hz
+
+If one of the above are not satisfied, the kernel will print a warning but the
+timings will still be calculated.
+
+***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo *****
+
+To find a suitable video mode, you just call
+
+int __init 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)
+
+with db/dbsize your non-standard video mode database, or NULL to use the
+standard video mode database.
+
+fb_find_mode() first tries the specified video mode (or any mode that matches,
+e.g. there can be multiple 640x480 modes, each of them is tried). If that
+fails, the default mode is tried. If that fails, it walks over all modes.
+
+To specify a video mode at bootup, use the following boot options:
+ video=<driver>:<xres>x<yres>[-<bpp>][@refresh]
+
+where <driver> is a name from the table below. Valid default modes can be
+found in linux/drivers/video/modedb.c. Check your driver's documentation.
+There may be more modes.
+
+ Drivers that support modedb boot options
+ Boot Name Cards Supported
+
+ amifb - Amiga chipset frame buffer
+ aty128fb - ATI Rage128 / Pro frame buffer
+ atyfb - ATI Mach64 frame buffer
+ pm2fb - Permedia 2/2V frame buffer
+ pm3fb - Permedia 3 frame buffer
+ sstfb - Voodoo 1/2 (SST1) chipset frame buffer
+ tdfxfb - 3D Fx frame buffer
+ tridentfb - Trident (Cyber)blade chipset frame buffer
+ vt8623fb - VIA 8623 frame buffer
+
+BTW, only a few fb drivers use this at the moment. Others are to follow
+(feel free to send patches). The DRM drivers also support this.
diff --git a/Documentation/fb/pvr2fb.txt b/Documentation/fb/pvr2fb.txt
new file mode 100644
index 00000000..36bdeff5
--- /dev/null
+++ b/Documentation/fb/pvr2fb.txt
@@ -0,0 +1,65 @@
+$Id: pvr2fb.txt,v 1.1 2001/05/24 05:09:16 mrbrown Exp $
+
+What is pvr2fb?
+===============
+
+This is a driver for PowerVR 2 based graphics frame buffers, such as the
+one found in the Dreamcast.
+
+Advantages:
+
+ * It provides a nice large console (128 cols + 48 lines with 1024x768)
+ without using tiny, unreadable fonts (NOT on the Dreamcast)
+ * You can run XF86_FBDev on top of /dev/fb0
+ * Most important: boot logo :-)
+
+Disadvantages:
+
+ * Driver is largely untested on non-Dreamcast systems.
+
+Configuration
+=============
+
+You can pass kernel command line options to pvr2fb with
+`video=pvr2fb:option1,option2:value2,option3' (multiple options should be
+separated by comma, values are separated from options by `:').
+Accepted options:
+
+font:X - default font to use. All fonts are supported, including the
+ SUN12x22 font which is very nice at high resolutions.
+
+
+mode:X - default video mode with format [xres]x[yres]-<bpp>@<refresh rate>
+ The following video modes are supported:
+ 640x640-16@60, 640x480-24@60, 640x480-32@60. The Dreamcast
+ defaults to 640x480-16@60. At the time of writing the
+ 24bpp and 32bpp modes function poorly. Work to fix that is
+ ongoing
+
+ Note: the 640x240 mode is currently broken, and should not be
+ used for any reason. It is only mentioned here as a reference.
+
+inverse - invert colors on screen (for LCD displays)
+
+nomtrr - disables write combining on frame buffer. This slows down driver
+ but there is reported minor incompatibility between GUS DMA and
+ XFree under high loads if write combining is enabled (sound
+ dropouts). MTRR is enabled by default on systems that have it
+ configured and that support it.
+
+cable:X - cable type. This can be any of the following: vga, rgb, and
+ composite. If none is specified, we guess.
+
+output:X - output type. This can be any of the following: pal, ntsc, and
+ vga. If none is specified, we guess.
+
+X11
+===
+
+XF86_FBDev has been shown to work on the Dreamcast in the past - though not yet
+on any 2.6 series kernel.
+
+--
+Paul Mundt <lethal@linuxdc.org>
+Updated by Adrian McMenamin <adrian@mcmen.demon.co.uk>
+
diff --git a/Documentation/fb/pxafb.txt b/Documentation/fb/pxafb.txt
new file mode 100644
index 00000000..d143a0a7
--- /dev/null
+++ b/Documentation/fb/pxafb.txt
@@ -0,0 +1,142 @@
+Driver for PXA25x LCD controller
+================================
+
+The driver supports the following options, either via
+options=<OPTIONS> when modular or video=pxafb:<OPTIONS> when built in.
+
+For example:
+ modprobe pxafb options=vmem:2M,mode:640x480-8,passive
+or on the kernel command line
+ video=pxafb:vmem:2M,mode:640x480-8,passive
+
+vmem: VIDEO_MEM_SIZE
+ Amount of video memory to allocate (can be suffixed with K or M
+ for kilobytes or megabytes)
+
+mode:XRESxYRES[-BPP]
+ XRES == LCCR1_PPL + 1
+ YRES == LLCR2_LPP + 1
+ The resolution of the display in pixels
+ BPP == The bit depth. Valid values are 1, 2, 4, 8 and 16.
+
+pixclock:PIXCLOCK
+ Pixel clock in picoseconds
+
+left:LEFT == LCCR1_BLW + 1
+right:RIGHT == LCCR1_ELW + 1
+hsynclen:HSYNC == LCCR1_HSW + 1
+upper:UPPER == LCCR2_BFW
+lower:LOWER == LCCR2_EFR
+vsynclen:VSYNC == LCCR2_VSW + 1
+ Display margins and sync times
+
+color | mono => LCCR0_CMS
+ umm...
+
+active | passive => LCCR0_PAS
+ Active (TFT) or Passive (STN) display
+
+single | dual => LCCR0_SDS
+ Single or dual panel passive display
+
+4pix | 8pix => LCCR0_DPD
+ 4 or 8 pixel monochrome single panel data
+
+hsync:HSYNC
+vsync:VSYNC
+ Horizontal and vertical sync. 0 => active low, 1 => active
+ high.
+
+dpc:DPC
+ Double pixel clock. 1=>true, 0=>false
+
+outputen:POLARITY
+ Output Enable Polarity. 0 => active low, 1 => active high
+
+pixclockpol:POLARITY
+ pixel clock polarity
+ 0 => falling edge, 1 => rising edge
+
+
+Overlay Support for PXA27x and later LCD controllers
+====================================================
+
+ PXA27x and later processors support overlay1 and overlay2 on-top of the
+ base framebuffer (although under-neath the base is also possible). They
+ support palette and no-palette RGB formats, as well as YUV formats (only
+ available on overlay2). These overlays have dedicated DMA channels and
+ behave in a similar way as a framebuffer.
+
+ However, there are some differences between these overlay framebuffers
+ and normal framebuffers, as listed below:
+
+ 1. overlay can start at a 32-bit word aligned position within the base
+ framebuffer, which means they have a start (x, y). This information
+ is encoded into var->nonstd (no, var->xoffset and var->yoffset are
+ not for such purpose).
+
+ 2. overlay framebuffer is allocated dynamically according to specified
+ 'struct fb_var_screeninfo', the amount is decided by:
+
+ var->xres_virtual * var->yres_virtual * bpp
+
+ bpp = 16 -- for RGB565 or RGBT555
+ = 24 -- for YUV444 packed
+ = 24 -- for YUV444 planar
+ = 16 -- for YUV422 planar (1 pixel = 1 Y + 1/2 Cb + 1/2 Cr)
+ = 12 -- for YUV420 planar (1 pixel = 1 Y + 1/4 Cb + 1/4 Cr)
+
+ NOTE:
+
+ a. overlay does not support panning in x-direction, thus
+ var->xres_virtual will always be equal to var->xres
+
+ b. line length of overlay(s) must be on a 32-bit word boundary,
+ for YUV planar modes, it is a requirement for the component
+ with minimum bits per pixel, e.g. for YUV420, Cr component
+ for one pixel is actually 2-bits, it means the line length
+ should be a multiple of 16-pixels
+
+ c. starting horizontal position (XPOS) should start on a 32-bit
+ word boundary, otherwise the fb_check_var() will just fail.
+
+ d. the rectangle of the overlay should be within the base plane,
+ otherwise fail
+
+ Applications should follow the sequence below to operate an overlay
+ framebuffer:
+
+ a. open("/dev/fb[1-2]", ...)
+ b. ioctl(fd, FBIOGET_VSCREENINFO, ...)
+ c. modify 'var' with desired parameters:
+ 1) var->xres and var->yres
+ 2) larger var->yres_virtual if more memory is required,
+ usually for double-buffering
+ 3) var->nonstd for starting (x, y) and color format
+ 4) var->{red, green, blue, transp} if RGB mode is to be used
+ d. ioctl(fd, FBIOPUT_VSCREENINFO, ...)
+ e. ioctl(fd, FBIOGET_FSCREENINFO, ...)
+ f. mmap
+ g. ...
+
+ 3. for YUV planar formats, these are actually not supported within the
+ framebuffer framework, application has to take care of the offsets
+ and lengths of each component within the framebuffer.
+
+ 4. var->nonstd is used to pass starting (x, y) position and color format,
+ the detailed bit fields are shown below:
+
+ 31 23 20 10 0
+ +-----------------+---+----------+----------+
+ | ... unused ... |FOR| XPOS | YPOS |
+ +-----------------+---+----------+----------+
+
+ FOR - color format, as defined by OVERLAY_FORMAT_* in pxafb.h
+ 0 - RGB
+ 1 - YUV444 PACKED
+ 2 - YUV444 PLANAR
+ 3 - YUV422 PLANAR
+ 4 - YUR420 PLANAR
+
+ XPOS - starting horizontal position
+ YPOS - starting vertical position
diff --git a/Documentation/fb/s3fb.txt b/Documentation/fb/s3fb.txt
new file mode 100644
index 00000000..2c97770b
--- /dev/null
+++ b/Documentation/fb/s3fb.txt
@@ -0,0 +1,82 @@
+
+ s3fb - fbdev driver for S3 Trio/Virge chips
+ ===========================================
+
+
+Supported Hardware
+==================
+
+ S3 Trio32
+ S3 Trio64 (and variants V+, UV+, V2/DX, V2/GX)
+ S3 Virge (and variants VX, DX, GX and GX2+)
+ S3 Plato/PX (completely untested)
+ S3 Aurora64V+ (completely untested)
+
+ - only PCI bus supported
+ - only BIOS initialized VGA devices supported
+ - probably not working on big endian
+
+I tested s3fb on Trio64 (plain, V+ and V2/DX) and Virge (plain, VX, DX),
+all on i386.
+
+
+Supported Features
+==================
+
+ * 4 bpp pseudocolor modes (with 18bit palette, two variants)
+ * 8 bpp pseudocolor mode (with 18bit palette)
+ * 16 bpp truecolor modes (RGB 555 and RGB 565)
+ * 24 bpp truecolor mode (RGB 888) on (only on Virge VX)
+ * 32 bpp truecolor mode (RGB 888) on (not on Virge VX)
+ * text mode (activated by bpp = 0)
+ * interlaced mode variant (not available in text mode)
+ * doublescan mode variant (not available in text mode)
+ * panning in both directions
+ * suspend/resume support
+ * DPMS support
+
+Text mode is supported even in higher resolutions, but there is limitation to
+lower pixclocks (maximum usually between 50-60 MHz, depending on specific
+hardware, i get best results from plain S3 Trio32 card - about 75 MHz). This
+limitation is not enforced by driver. Text mode supports 8bit wide fonts only
+(hardware limitation) and 16bit tall fonts (driver limitation). Text mode
+support is broken on S3 Trio64 V2/DX.
+
+There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with
+packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode
+with interleaved planes (1 byte interleave), MSB first. Both modes support
+8bit wide fonts only (driver limitation).
+
+Suspend/resume works on systems that initialize video card during resume and
+if device is active (for example used by fbcon).
+
+
+Missing Features
+================
+(alias TODO list)
+
+ * secondary (not initialized by BIOS) device support
+ * big endian support
+ * Zorro bus support
+ * MMIO support
+ * 24 bpp mode support on more cards
+ * support for fontwidths != 8 in 4 bpp modes
+ * support for fontheight != 16 in text mode
+ * composite and external sync (is anyone able to test this?)
+ * hardware cursor
+ * video overlay support
+ * vsync synchronization
+ * feature connector support
+ * acceleration support (8514-like 2D, Virge 3D, busmaster transfers)
+ * better values for some magic registers (performance issues)
+
+
+Known bugs
+==========
+
+ * cursor disable in text mode doesn't work
+ * text mode broken on S3 Trio64 V2/DX
+
+
+--
+Ondrej Zajicek <santiago@crfreenet.org>
diff --git a/Documentation/fb/sa1100fb.txt b/Documentation/fb/sa1100fb.txt
new file mode 100644
index 00000000..f1b42204
--- /dev/null
+++ b/Documentation/fb/sa1100fb.txt
@@ -0,0 +1,39 @@
+[This file is cloned from VesaFB/matroxfb]
+
+What is sa1100fb?
+=================
+
+This is a driver for a graphic framebuffer for the SA-1100 LCD
+controller.
+
+Configuration
+==============
+
+For most common passive displays, giving the option
+
+video=sa1100fb:bpp:<value>,lccr0:<value>,lccr1:<value>,lccr2:<value>,lccr3:<value>
+
+on the kernel command line should be enough to configure the
+controller. The bits per pixel (bpp) value should be 4, 8, 12, or
+16. LCCR values are display-specific and should be computed as
+documented in the SA-1100 Developer's Manual, Section 11.7. Dual-panel
+displays are supported as long as the SDS bit is set in LCCR0; GPIO<9:2>
+are used for the lower panel.
+
+For active displays or displays requiring additional configuration
+(controlling backlights, powering on the LCD, etc.), the command line
+options may not be enough to configure the display. Adding sections to
+sa1100fb_init_fbinfo(), sa1100fb_activate_var(),
+sa1100fb_disable_lcd_controller(), and sa1100fb_enable_lcd_controller()
+will probably be necessary.
+
+Accepted options:
+
+bpp:<value> Configure for <value> bits per pixel
+lccr0:<value> Configure LCD control register 0 (11.7.3)
+lccr1:<value> Configure LCD control register 1 (11.7.4)
+lccr2:<value> Configure LCD control register 2 (11.7.5)
+lccr3:<value> Configure LCD control register 3 (11.7.6)
+
+--
+Mark Huang <mhuang@livetoy.com>
diff --git a/Documentation/fb/sh7760fb.txt b/Documentation/fb/sh7760fb.txt
new file mode 100644
index 00000000..b994c3b1
--- /dev/null
+++ b/Documentation/fb/sh7760fb.txt
@@ -0,0 +1,131 @@
+SH7760/SH7763 integrated LCDC Framebuffer driver
+================================================
+
+0. Overview
+-----------
+The SH7760/SH7763 have an integrated LCD Display controller (LCDC) which
+supports (in theory) resolutions ranging from 1x1 to 1024x1024,
+with color depths ranging from 1 to 16 bits, on STN, DSTN and TFT Panels.
+
+Caveats:
+* Framebuffer memory must be a large chunk allocated at the top
+ of Area3 (HW requirement). Because of this requirement you should NOT
+ make the driver a module since at runtime it may become impossible to
+ get a large enough contiguous chunk of memory.
+
+* The driver does not support changing resolution while loaded
+ (displays aren't hotpluggable anyway)
+
+* Heavy flickering may be observed
+ a) if you're using 15/16bit color modes at >= 640x480 px resolutions,
+ b) during PCMCIA (or any other slow bus) activity.
+
+* Rotation works only 90degress clockwise, and only if horizontal
+ resolution is <= 320 pixels.
+
+files: drivers/video/sh7760fb.c
+ include/asm-sh/sh7760fb.h
+ Documentation/fb/sh7760fb.txt
+
+1. Platform setup
+-----------------
+SH7760:
+ Video data is fetched via the DMABRG DMA engine, so you have to
+ configure the SH DMAC for DMABRG mode (write 0x94808080 to the
+ DMARSRA register somewhere at boot).
+
+ PFC registers PCCR and PCDR must be set to peripheral mode.
+ (write zeros to both).
+
+The driver does NOT do the above for you since board setup is, well, job
+of the board setup code.
+
+2. Panel definitions
+--------------------
+The LCDC must explicitly be told about the type of LCD panel
+attached. Data must be wrapped in a "struct sh7760fb_platdata" and
+passed to the driver as platform_data.
+
+Suggest you take a closer look at the SH7760 Manual, Section 30.
+(http://documentation.renesas.com/eng/products/mpumcu/e602291_sh7760.pdf)
+
+The following code illustrates what needs to be done to
+get the framebuffer working on a 640x480 TFT:
+
+====================== cut here ======================================
+
+#include <linux/fb.h>
+#include <asm/sh7760fb.h>
+
+/*
+ * NEC NL6440bc26-01 640x480 TFT
+ * dotclock 25175 kHz
+ * Xres 640 Yres 480
+ * Htotal 800 Vtotal 525
+ * HsynStart 656 VsynStart 490
+ * HsynLenn 30 VsynLenn 2
+ *
+ * The linux framebuffer layer does not use the syncstart/synclen
+ * values but right/left/upper/lower margin values. The comments
+ * for the x_margin explain how to calculate those from given
+ * panel sync timings.
+ */
+static struct fb_videomode nl6448bc26 = {
+ .name = "NL6448BC26",
+ .refresh = 60,
+ .xres = 640,
+ .yres = 480,
+ .pixclock = 39683, /* in picoseconds! */
+ .hsync_len = 30,
+ .vsync_len = 2,
+ .left_margin = 114, /* HTOT - (HSYNSLEN + HSYNSTART) */
+ .right_margin = 16, /* HSYNSTART - XRES */
+ .upper_margin = 33, /* VTOT - (VSYNLEN + VSYNSTART) */
+ .lower_margin = 10, /* VSYNSTART - YRES */
+ .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
+ .vmode = FB_VMODE_NONINTERLACED,
+ .flag = 0,
+};
+
+static struct sh7760fb_platdata sh7760fb_nl6448 = {
+ .def_mode = &nl6448bc26,
+ .ldmtr = LDMTR_TFT_COLOR_16, /* 16bit TFT panel */
+ .lddfr = LDDFR_8BPP, /* we want 8bit output */
+ .ldpmmr = 0x0070,
+ .ldpspr = 0x0500,
+ .ldaclnr = 0,
+ .ldickr = LDICKR_CLKSRC(LCDC_CLKSRC_EXTERNAL) |
+ LDICKR_CLKDIV(1),
+ .rotate = 0,
+ .novsync = 1,
+ .blank = NULL,
+};
+
+/* SH7760:
+ * 0xFE300800: 256 * 4byte xRGB palette ram
+ * 0xFE300C00: 42 bytes ctrl registers
+ */
+static struct resource sh7760_lcdc_res[] = {
+ [0] = {
+ .start = 0xFE300800,
+ .end = 0xFE300CFF,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 65,
+ .end = 65,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device sh7760_lcdc_dev = {
+ .dev = {
+ .platform_data = &sh7760fb_nl6448,
+ },
+ .name = "sh7760-lcdc",
+ .id = -1,
+ .resource = sh7760_lcdc_res,
+ .num_resources = ARRAY_SIZE(sh7760_lcdc_res),
+};
+
+====================== cut here ======================================
diff --git a/Documentation/fb/sisfb.txt b/Documentation/fb/sisfb.txt
new file mode 100644
index 00000000..2e68e503
--- /dev/null
+++ b/Documentation/fb/sisfb.txt
@@ -0,0 +1,158 @@
+
+What is sisfb?
+==============
+
+sisfb is a framebuffer device driver for SiS (Silicon Integrated Systems)
+graphics chips. Supported are:
+
+- SiS 300 series: SiS 300/305, 540, 630(S), 730(S)
+- SiS 315 series: SiS 315/H/PRO, 55x, (M)65x, 740, (M)661(F/M)X, (M)741(GX)
+- SiS 330 series: SiS 330 ("Xabre"), (M)760
+
+
+Why do I need a framebuffer driver?
+===================================
+
+sisfb is eg. useful if you want a high-resolution text console. Besides that,
+sisfb is required to run DirectFB (which comes with an additional, dedicated
+driver for the 315 series).
+
+On the 300 series, sisfb on kernels older than 2.6.3 furthermore plays an
+important role in connection with DRM/DRI: Sisfb manages the memory heap
+used by DRM/DRI for 3D texture and other data. This memory management is
+required for using DRI/DRM.
+
+Kernels >= around 2.6.3 do not need sisfb any longer for DRI/DRM memory
+management. The SiS DRM driver has been updated and features a memory manager
+of its own (which will be used if sisfb is not compiled). So unless you want
+a graphical console, you don't need sisfb on kernels >=2.6.3.
+
+Sidenote: Since this seems to be a commonly made mistake: sisfb and vesafb
+cannot be active at the same time! Do only select one of them in your kernel
+configuration.
+
+
+How are parameters passed to sisfb?
+===================================
+
+Well, it depends: If compiled statically into the kernel, use lilo's append
+statement to add the parameters to the kernel command line. Please see lilo's
+(or GRUB's) documentation for more information. If sisfb is a kernel module,
+parameters are given with the modprobe (or insmod) command.
+
+Example for sisfb as part of the static kernel: Add the following line to your
+lilo.conf:
+
+ append="video=sisfb:mode:1024x768x16,mem:12288,rate:75"
+
+Example for sisfb as a module: Start sisfb by typing
+
+ modprobe sisfb mode=1024x768x16 rate=75 mem=12288
+
+A common mistake is that folks use a wrong parameter format when using the
+driver compiled into the kernel. Please note: If compiled into the kernel,
+the parameter format is video=sisfb:mode:none or video=sisfb:mode:1024x768x16
+(or whatever mode you want to use, alternatively using any other format
+described above or the vesa keyword instead of mode). If compiled as a module,
+the parameter format reads mode=none or mode=1024x768x16 (or whatever mode you
+want to use). Using a "=" for a ":" (and vice versa) is a huge difference!
+Additionally: If you give more than one argument to the in-kernel sisfb, the
+arguments are separated with ",". For example:
+
+ video=sisfb:mode:1024x768x16,rate:75,mem:12288
+
+
+How do I use it?
+================
+
+Preface statement: This file only covers very little of the driver's
+capabilities and features. Please refer to the author's and maintainer's
+website at http://www.winischhofer.net/linuxsisvga.shtml for more
+information. Additionally, "modinfo sisfb" gives an overview over all
+supported options including some explanation.
+
+The desired display mode can be specified using the keyword "mode" with
+a parameter in one of the following formats:
+ - XxYxDepth or
+ - XxY-Depth or
+ - XxY-Depth@Rate or
+ - XxY
+ - or simply use the VESA mode number in hexadecimal or decimal.
+
+For example: 1024x768x16, 1024x768-16@75, 1280x1024-16. If no depth is
+specified, it defaults to 8. If no rate is given, it defaults to 60Hz. Depth 32
+means 24bit color depth (but 32 bit framebuffer depth, which is not relevant
+to the user).
+
+Additionally, sisfb understands the keyword "vesa" followed by a VESA mode
+number in decimal or hexadecimal. For example: vesa=791 or vesa=0x117. Please
+use either "mode" or "vesa" but not both.
+
+Linux 2.4 only: If no mode is given, sisfb defaults to "no mode" (mode=none) if
+compiled as a module; if sisfb is statically compiled into the kernel, it
+defaults to 800x600x8 unless CRT2 type is LCD, in which case the LCD's native
+resolution is used. If you want to switch to a different mode, use the fbset
+shell command.
+
+Linux 2.6 only: If no mode is given, sisfb defaults to 800x600x8 unless CRT2
+type is LCD, in which case it defaults to the LCD's native resolution. If
+you want to switch to another mode, use the stty shell command.
+
+You should compile in both vgacon (to boot if you remove you SiS card from
+your system) and sisfb (for graphics mode). Under Linux 2.6, also "Framebuffer
+console support" (fbcon) is needed for a graphical console.
+
+You should *not* compile-in vesafb. And please do not use the "vga=" keyword
+in lilo's or grub's configuration file; mode selection is done using the
+"mode" or "vesa" keywords as a parameter. See above and below.
+
+
+X11
+===
+
+If using XFree86 or X.org, it is recommended that you don't use the "fbdev"
+driver but the dedicated "sis" X driver. The "sis" X driver and sisfb are
+developed by the same person (Thomas Winischhofer) and cooperate well with
+each other.
+
+
+SVGALib
+=======
+
+SVGALib, if directly accessing the hardware, never restores the screen
+correctly, especially on laptops or if the output devices are LCD or TV.
+Therefore, use the chipset "FBDEV" in SVGALib configuration. This will make
+SVGALib use the framebuffer device for mode switches and restoration.
+
+
+Configuration
+=============
+
+(Some) accepted options:
+
+off - Disable sisfb. This option is only understood if sisfb is
+ in-kernel, not a module.
+mem:X - size of memory for the console, rest will be used for DRI/DRM. X
+ is in kilobytes. On 300 series, the default is 4096, 8192 or
+ 16384 (each in kilobyte) depending on how much video ram the card
+ has. On 315/330 series, the default is the maximum available ram
+ (since DRI/DRM is not supported for these chipsets).
+noaccel - do not use 2D acceleration engine. (Default: use acceleration)
+noypan - disable y-panning and scroll by redrawing the entire screen.
+ This is much slower than y-panning. (Default: use y-panning)
+vesa:X - selects startup videomode. X is number from 0 to 0x1FF and
+ represents the VESA mode number (can be given in decimal or
+ hexadecimal form, the latter prefixed with "0x").
+mode:X - selects startup videomode. Please see above for the format of
+ "X".
+
+Boolean options such as "noaccel" or "noypan" are to be given without a
+parameter if sisfb is in-kernel (for example "video=sisfb:noypan). If
+sisfb is a module, these are to be set to 1 (for example "modprobe sisfb
+noypan=1").
+
+--
+Thomas Winischhofer <thomas@winischhofer.net>
+May 27, 2004
+
+
diff --git a/Documentation/fb/sm501.txt b/Documentation/fb/sm501.txt
new file mode 100644
index 00000000..8d17aebd
--- /dev/null
+++ b/Documentation/fb/sm501.txt
@@ -0,0 +1,10 @@
+Configuration:
+
+You can pass the following kernel command line options to sm501 videoframebuffer:
+
+ sm501fb.bpp= SM501 Display driver:
+ Specifiy bits-per-pixel if not specified by 'mode'
+
+ sm501fb.mode= SM501 Display driver:
+ Specify resolution as
+ "<xres>x<yres>[-<bpp>][@<refresh>]"
diff --git a/Documentation/fb/sstfb.txt b/Documentation/fb/sstfb.txt
new file mode 100644
index 00000000..550ca775
--- /dev/null
+++ b/Documentation/fb/sstfb.txt
@@ -0,0 +1,174 @@
+
+Introduction
+
+ This is a frame buffer device driver for 3dfx' Voodoo Graphics
+ (aka voodoo 1, aka sst1) and Voodoo² (aka Voodoo 2, aka CVG) based
+ video boards. It's highly experimental code, but is guaranteed to work
+ on my computer, with my "Maxi Gamer 3D" and "Maxi Gamer 3d²" boards,
+ and with me "between chair and keyboard". Some people tested other
+ combinations and it seems that it works.
+ The main page is located at <http://sstfb.sourceforge.net>, and if
+ you want the latest version, check out the CVS, as the driver is a work
+ in progress, I feel uncomfortable with releasing tarballs of something
+ not completely working...Don't worry, it's still more than useable
+ (I eat my own dog food)
+
+ Please read the Bug section, and report any success or failure to me
+ (Ghozlane Toumi <gtoumi@laposte.net>).
+ BTW, If you have only one monitor , and you don't feel like playing
+ with the vga passthrou cable, I can only suggest borrowing a screen
+ somewhere...
+
+
+Installation
+
+ This driver (should) work on ix86, with "late" 2.2.x kernel (tested
+ with x = 19) and "recent" 2.4.x kernel, as a module or compiled in.
+ It has been included in mainstream kernel since the infamous 2.4.10.
+ You can apply the patches found in sstfb/kernel/*-2.{2|4}.x.patch,
+ and copy sstfb.c to linux/drivers/video/, or apply a single patch,
+ sstfb/patch-2.{2|4}.x-sstfb-yymmdd to your linux source tree.
+
+ Then configure your kernel as usual: choose "m" or "y" to 3Dfx Voodoo
+ Graphics in section "console". Compile, install, have fun... and please
+ drop me a report :)
+
+
+Module Usage
+
+ Warnings.
+ # You should read completely this section before issuing any command.
+ # If you have only one monitor to play with, once you insmod the
+ module, the 3dfx takes control of the output, so you'll have to
+ plug the monitor to the "normal" video board in order to issue
+ the commands, or you can blindly use sst_dbg_vgapass
+ in the tools directory (See Tools). The latest solution is pass the
+ parameter vgapass=1 when insmodding the driver. (See Kernel/Modules
+ Options)
+
+ Module insertion:
+ # insmod sstfb.o
+ you should see some strange output from the board:
+ a big blue square, a green and a red small squares and a vertical
+ white rectangle. why? the function's name is self-explanatory:
+ "sstfb_test()"...
+ (if you don't have a second monitor, you'll have to plug your monitor
+ directly to the 2D videocard to see what you're typing)
+ # con2fb /dev/fbx /dev/ttyx
+ bind a tty to the new frame buffer. if you already have a frame
+ buffer driver, the voodoo fb will likely be /dev/fb1. if not,
+ the device will be /dev/fb0. You can check this by doing a
+ cat /proc/fb. You can find a copy of con2fb in tools/ directory.
+ if you don't have another fb device, this step is superfluous,
+ as the console subsystem automagicaly binds ttys to the fb.
+ # switch to the virtual console you just mapped. "tadaaa" ...
+
+ Module removal:
+ # con2fb /dev/fbx /dev/ttyx
+ bind the tty to the old frame buffer so the module can be removed.
+ (how does it work with vgacon ? short answer : it doesn't work)
+ # rmmod sstfb
+
+
+Kernel/Modules Options
+
+ You can pass some options to the sstfb module, and via the kernel
+ command line when the driver is compiled in:
+ for module : insmod sstfb.o option1=value1 option2=value2 ...
+ in kernel : video=sstfb:option1,option2:value2,option3 ...
+
+ sstfb supports the following options :
+
+Module Kernel Description
+
+vgapass=0 vganopass Enable or disable VGA passthrou cable.
+vgapass=1 vgapass When enabled, the monitor will get the signal
+ from the VGA board and not from the voodoo.
+ Default: nopass
+
+mem=x mem:x Force frame buffer memory in MiB
+ allowed values: 0, 1, 2, 4.
+ Default: 0 (= autodetect)
+
+inverse=1 inverse Supposed to enable inverse console.
+ doesn't work yet...
+
+clipping=1 clipping Enable or disable clipping.
+clipping=0 noclipping With clipping enabled, all offscreen
+ reads and writes are discarded.
+ Default: enable clipping.
+
+gfxclk=x gfxclk:x Force graphic clock frequency (in MHz).
+ Be careful with this option, it may be
+ DANGEROUS.
+ Default: auto
+ 50Mhz for Voodoo 1,
+ 75MHz for Voodoo 2.
+
+slowpci=1 fastpci Enable or disable fast PCI read/writes.
+slowpci=1 slowpci Default : fastpci
+
+dev=x dev:x Attach the driver to device number x.
+ 0 is the first compatible board (in
+ lspci order)
+
+Tools
+
+ These tools are mostly for debugging purposes, but you can
+ find some of these interesting :
+ - con2fb , maps a tty to a fbramebuffer .
+ con2fb /dev/fb1 /dev/tty5
+ - sst_dbg_vgapass , changes vga passthrou. You have to recompile the
+ driver with SST_DEBUG and SST_DEBUG_IOCTL set to 1
+ sst_dbg_vgapass /dev/fb1 1 (enables vga cable)
+ sst_dbg_vgapass /dev/fb1 0 (disables vga cable)
+ - glide_reset , resets the voodoo using glide
+ use this after rmmoding sstfb, if the module refuses to
+ reinsert .
+
+Bugs
+
+ - DO NOT use glide while the sstfb module is in, you'll most likely
+ hang your computer.
+ - If you see some artefacts (pixels not cleaning and stuff like that),
+ try turning off clipping (clipping=0), and/or using slowpci
+ - the driver don't detect the 4Mb frame buffer voodoos, it seems that
+ the 2 last Mbs wrap around. looking into that .
+ - The driver is 16 bpp only, 24/32 won't work.
+ - The driver is not your_favorite_toy-safe. this includes SMP...
+ [Actually from inspection it seems to be safe - Alan]
+ - When using XFree86 FBdev (X over fbdev) you may see strange color
+ patterns at the border of your windows (the pixels lose the lowest
+ byte -> basically the blue component and some of the green). I'm unable
+ to reproduce this with XFree86-3.3, but one of the testers has this
+ problem with XFree86-4. Apparently recent Xfree86-4.x solve this
+ problem.
+ - I didn't really test changing the palette, so you may find some weird
+ things when playing with that.
+ - Sometimes the driver will not recognise the DAC, and the
+ initialisation will fail. This is specifically true for
+ voodoo 2 boards, but it should be solved in recent versions. Please
+ contact me.
+ - The 24/32 is not likely to work anytime soon, knowing that the
+ hardware does ... unusual things in 24/32 bpp.
+ - When used with another video board, current limitations of the linux
+ console subsystem can cause some troubles, specifically, you should
+ disable software scrollback, as it can oops badly ...
+
+Todo
+
+ - Get rid of the previous paragraph.
+ - Buy more coffee.
+ - test/port to other arch.
+ - try to add panning using tweeks with front and back buffer .
+ - try to implement accel on voodoo2, this board can actually do a
+ lot in 2D even if it was sold as a 3D only board ...
+
+ghoz.
+
+--
+Ghozlane Toumi <gtoumi@laposte.net>
+
+
+$Date: 2002/05/09 20:11:45 $
+http://sstfb.sourceforge.net/README
diff --git a/Documentation/fb/tgafb.txt b/Documentation/fb/tgafb.txt
new file mode 100644
index 00000000..250083ad
--- /dev/null
+++ b/Documentation/fb/tgafb.txt
@@ -0,0 +1,69 @@
+$Id: tgafb.txt,v 1.1.2.2 2000/04/04 06:50:18 mato Exp $
+
+What is tgafb?
+===============
+
+This is a driver for DECChip 21030 based graphics framebuffers, a.k.a. TGA
+cards, which are usually found in older Digital Alpha systems. The
+following models are supported:
+
+ZLxP-E1 (8bpp, 2 MB VRAM)
+ZLxP-E2 (32bpp, 8 MB VRAM)
+ZLxP-E3 (32bpp, 16 MB VRAM, Zbuffer)
+
+This version is an almost complete rewrite of the code written by Geert
+Uytterhoeven, which was based on the original TGA console code written by
+Jay Estabrook.
+
+Major new features since Linux 2.0.x:
+
+ * Support for multiple resolutions
+ * Support for fixed-frequency and other oddball monitors
+ (by allowing the video mode to be set at boot time)
+
+User-visible changes since Linux 2.2.x:
+
+ * Sync-on-green is now handled properly
+ * More useful information is printed on bootup
+ (this helps if people run into problems)
+
+This driver does not (yet) support the TGA2 family of framebuffers, so the
+PowerStorm 3D30/4D20 (also known as PBXGB) cards are not supported. These
+can however be used with the standard VGA Text Console driver.
+
+
+Configuration
+=============
+
+You can pass kernel command line options to tgafb with
+`video=tgafb:option1,option2:value2,option3' (multiple options should be
+separated by comma, values are separated from options by `:').
+Accepted options:
+
+font:X - default font to use. All fonts are supported, including the
+ SUN12x22 font which is very nice at high resolutions.
+
+mode:X - default video mode. The following video modes are supported:
+ 640x480-60, 800x600-56, 640x480-72, 800x600-60, 800x600-72,
+ 1024x768-60, 1152x864-60, 1024x768-70, 1024x768-76,
+ 1152x864-70, 1280x1024-61, 1024x768-85, 1280x1024-70,
+ 1152x864-84, 1280x1024-76, 1280x1024-85
+
+
+Known Issues
+============
+
+The XFree86 FBDev server has been reported not to work, since tgafb doesn't do
+mmap(). Running the standard XF86_TGA server from XFree86 3.3.x works fine for
+me, however this server does not do acceleration, which make certain operations
+quite slow. Support for acceleration is being progressively integrated in
+XFree86 4.x.
+
+When running tgafb in resolutions higher than 640x480, on switching VCs from
+tgafb to XF86_TGA 3.3.x, the entire screen is not re-drawn and must be manually
+refreshed. This is an X server problem, not a tgafb problem, and is fixed in
+XFree86 4.0.
+
+Enjoy!
+
+Martin Lucina <mato@kotelna.sk>
diff --git a/Documentation/fb/tridentfb.txt b/Documentation/fb/tridentfb.txt
new file mode 100644
index 00000000..45d9de5b
--- /dev/null
+++ b/Documentation/fb/tridentfb.txt
@@ -0,0 +1,70 @@
+Tridentfb is a framebuffer driver for some Trident chip based cards.
+
+The following list of chips is thought to be supported although not all are
+tested:
+
+those from the TGUI series 9440/96XX and with Cyber in their names
+those from the Image series and with Cyber in their names
+those with Blade in their names (Blade3D,CyberBlade...)
+the newer CyberBladeXP family
+
+All families are accelerated. Only PCI/AGP based cards are supported,
+none of the older Tridents.
+The driver supports 8, 16 and 32 bits per pixel depths.
+The TGUI family requires a line length to be power of 2 if acceleration
+is enabled. This means that range of possible resolutions and bpp is
+limited comparing to the range if acceleration is disabled (see list
+of parameters below).
+
+Known bugs:
+1. The driver randomly locks up on 3DImage975 chip with acceleration
+ enabled. The same happens in X11 (Xorg).
+2. The ramdac speeds require some more fine tuning. It is possible to
+ switch resolution which the chip does not support at some depths for
+ older chips.
+
+How to use it?
+==============
+
+When booting you can pass the video parameter.
+video=tridentfb
+
+The parameters for tridentfb are concatenated with a ':' as in this example.
+
+video=tridentfb:800x600-16@75,noaccel
+
+The second level parameters that tridentfb understands are:
+
+noaccel - turns off acceleration (when it doesn't work for your card)
+
+fp - use flat panel related stuff
+crt - assume monitor is present instead of fp
+
+center - for flat panels and resolutions smaller than native size center the
+ image, otherwise use
+stretch
+
+memsize - integer value in KB, use if your card's memory size is misdetected.
+ look at the driver output to see what it says when initializing.
+
+memdiff - integer value in KB, should be nonzero if your card reports
+ more memory than it actually has. For instance mine is 192K less than
+ detection says in all three BIOS selectable situations 2M, 4M, 8M.
+ Only use if your video memory is taken from main memory hence of
+ configurable size. Otherwise use memsize.
+ If in some modes which barely fit the memory you see garbage
+ at the bottom this might help by not letting change to that mode
+ anymore.
+
+nativex - the width in pixels of the flat panel.If you know it (usually 1024
+ 800 or 1280) and it is not what the driver seems to detect use it.
+
+bpp - bits per pixel (8,16 or 32)
+mode - a mode name like 800x600-8@75 as described in
+ Documentation/fb/modedb.txt
+
+Using insane values for the above parameters will probably result in driver
+misbehaviour so take care(for instance memsize=12345678 or memdiff=23784 or
+nativex=93)
+
+Contact: jani@astechnix.ro
diff --git a/Documentation/fb/udlfb.txt b/Documentation/fb/udlfb.txt
new file mode 100644
index 00000000..57d2f290
--- /dev/null
+++ b/Documentation/fb/udlfb.txt
@@ -0,0 +1,159 @@
+
+What is udlfb?
+===============
+
+This is a driver for DisplayLink USB 2.0 era graphics chips.
+
+DisplayLink chips provide simple hline/blit operations with some compression,
+pairing that with a hardware framebuffer (16MB) on the other end of the
+USB wire. That hardware framebuffer is able to drive the VGA, DVI, or HDMI
+monitor with no CPU involvement until a pixel has to change.
+
+The CPU or other local resource does all the rendering; optinally compares the
+result with a local shadow of the remote hardware framebuffer to identify
+the minimal set of pixels that have changed; and compresses and sends those
+pixels line-by-line via USB bulk transfers.
+
+Because of the efficiency of bulk transfers and a protocol on top that
+does not require any acks - the effect is very low latency that
+can support surprisingly high resolutions with good performance for
+non-gaming and non-video applications.
+
+Mode setting, EDID read, etc are other bulk or control transfers. Mode
+setting is very flexible - able to set nearly arbitrary modes from any timing.
+
+Advantages of USB graphics in general:
+
+ * Ability to add a nearly arbitrary number of displays to any USB 2.0
+ capable system. On Linux, number of displays is limited by fbdev interface
+ (FB_MAX is currently 32). Of course, all USB devices on the same
+ host controller share the same 480Mbs USB 2.0 interface.
+
+Advantages of supporting DisplayLink chips with kernel framebuffer interface:
+
+ * The actual hardware functionality of DisplayLink chips matches nearly
+ one-to-one with the fbdev interface, making the driver quite small and
+ tight relative to the functionality it provides.
+ * X servers and other applications can use the standard fbdev interface
+ from user mode to talk to the device, without needing to know anything
+ about USB or DisplayLink's protocol at all. A "displaylink" X driver
+ and a slightly modified "fbdev" X driver are among those that already do.
+
+Disadvantages:
+
+ * Fbdev's mmap interface assumes a real hardware framebuffer is mapped.
+ In the case of USB graphics, it is just an allocated (virtual) buffer.
+ Writes need to be detected and encoded into USB bulk transfers by the CPU.
+ Accurate damage/changed area notifications work around this problem.
+ In the future, hopefully fbdev will be enhanced with an small standard
+ interface to allow mmap clients to report damage, for the benefit
+ of virtual or remote framebuffers.
+ * Fbdev does not arbitrate client ownership of the framebuffer well.
+ * Fbcon assumes the first framebuffer it finds should be consumed for console.
+ * It's not clear what the future of fbdev is, given the rise of KMS/DRM.
+
+How to use it?
+==============
+
+Udlfb, when loaded as a module, will match against all USB 2.0 generation
+DisplayLink chips (Alex and Ollie family). It will then attempt to read the EDID
+of the monitor, and set the best common mode between the DisplayLink device
+and the monitor's capabilities.
+
+If the DisplayLink device is successful, it will paint a "green screen" which
+means that from a hardware and fbdev software perspective, everything is good.
+
+At that point, a /dev/fb? interface will be present for user-mode applications
+to open and begin writing to the framebuffer of the DisplayLink device using
+standard fbdev calls. Note that if mmap() is used, by default the user mode
+application must send down damage notifcations to trigger repaints of the
+changed regions. Alternatively, udlfb can be recompiled with experimental
+defio support enabled, to support a page-fault based detection mechanism
+that can work without explicit notifcation.
+
+The most common client of udlfb is xf86-video-displaylink or a modified
+xf86-video-fbdev X server. These servers have no real DisplayLink specific
+code. They write to the standard framebuffer interface and rely on udlfb
+to do its thing. The one extra feature they have is the ability to report
+rectangles from the X DAMAGE protocol extension down to udlfb via udlfb's
+damage interface (which will hopefully be standardized for all virtual
+framebuffers that need damage info). These damage notifications allow
+udlfb to efficiently process the changed pixels.
+
+Module Options
+==============
+
+Special configuration for udlfb is usually unnecessary. There are a few
+options, however.
+
+From the command line, pass options to modprobe
+modprobe udlfb fb_defio=0 console=1 shadow=1
+
+Or modify options on the fly at /sys/module/udlfb/parameters directory via
+sudo nano fb_defio
+change the parameter in place, and save the file.
+
+Unplug/replug USB device to apply with new settings
+
+Or for permanent option, create file like /etc/modprobe.d/udlfb.conf with text
+options udlfb fb_defio=0 console=1 shadow=1
+
+Accepted boolean options:
+
+fb_defio Make use of the fb_defio (CONFIG_FB_DEFERRED_IO) kernel
+ module to track changed areas of the framebuffer by page faults.
+ Standard fbdev applications that use mmap but that do not
+ report damage, should be able to work with this enabled.
+ Disable when running with X server that supports reporting
+ changed regions via ioctl, as this method is simpler,
+ more stable, and higher performance.
+ default: fb_defio=1
+
+console Allow fbcon to attach to udlfb provided framebuffers.
+ Can be disabled if fbcon and other clients
+ (e.g. X with --shared-vt) are in conflict.
+ default: console=1
+
+shadow Allocate a 2nd framebuffer to shadow what's currently across
+ the USB bus in device memory. If any pixels are unchanged,
+ do not transmit. Spends host memory to save USB transfers.
+ Enabled by default. Only disable on very low memory systems.
+ default: shadow=1
+
+Sysfs Attributes
+================
+
+Udlfb creates several files in /sys/class/graphics/fb?
+Where ? is the sequential framebuffer id of the particular DisplayLink device
+
+edid If a valid EDID blob is written to this file (typically
+ by a udev rule), then udlfb will use this EDID as a
+ backup in case reading the actual EDID of the monitor
+ attached to the DisplayLink device fails. This is
+ especially useful for fixed panels, etc. that cannot
+ communicate their capabilities via EDID. Reading
+ this file returns the current EDID of the attached
+ monitor (or last backup value written). This is
+ useful to get the EDID of the attached monitor,
+ which can be passed to utilities like parse-edid.
+
+metrics_bytes_rendered 32-bit count of pixel bytes rendered
+
+metrics_bytes_identical 32-bit count of how many of those bytes were found to be
+ unchanged, based on a shadow framebuffer check
+
+metrics_bytes_sent 32-bit count of how many bytes were transferred over
+ USB to communicate the resulting changed pixels to the
+ hardware. Includes compression and protocol overhead
+
+metrics_cpu_kcycles_used 32-bit count of CPU cycles used in processing the
+ above pixels (in thousands of cycles).
+
+metrics_reset Write-only. Any write to this file resets all metrics
+ above to zero. Note that the 32-bit counters above
+ roll over very quickly. To get reliable results, design
+ performance tests to start and finish in a very short
+ period of time (one minute or less is safe).
+
+--
+Bernie Thompson <bernie@plugable.com>
diff --git a/Documentation/fb/uvesafb.txt b/Documentation/fb/uvesafb.txt
new file mode 100644
index 00000000..eefdd91d
--- /dev/null
+++ b/Documentation/fb/uvesafb.txt
@@ -0,0 +1,189 @@
+
+uvesafb - A Generic Driver for VBE2+ compliant video cards
+==========================================================
+
+1. Requirements
+---------------
+
+uvesafb should work with any video card that has a Video BIOS compliant
+with the VBE 2.0 standard.
+
+Unlike other drivers, uvesafb makes use of a userspace helper called
+v86d. v86d is used to run the x86 Video BIOS code in a simulated and
+controlled environment. This allows uvesafb to function on arches other
+than x86. Check the v86d documentation for a list of currently supported
+arches.
+
+v86d source code can be downloaded from the following website:
+ http://dev.gentoo.org/~spock/projects/uvesafb
+
+Please refer to the v86d documentation for detailed configuration and
+installation instructions.
+
+Note that the v86d userspace helper has to be available at all times in
+order for uvesafb to work properly. If you want to use uvesafb during
+early boot, you will have to include v86d into an initramfs image, and
+either compile it into the kernel or use it as an initrd.
+
+2. Caveats and limitations
+--------------------------
+
+uvesafb is a _generic_ driver which supports a wide variety of video
+cards, but which is ultimately limited by the Video BIOS interface.
+The most important limitations are:
+
+- Lack of any type of acceleration.
+- A strict and limited set of supported video modes. Often the native
+ or most optimal resolution/refresh rate for your setup will not work
+ with uvesafb, simply because the Video BIOS doesn't support the
+ video mode you want to use. This can be especially painful with
+ widescreen panels, where native video modes don't have the 4:3 aspect
+ ratio, which is what most BIOS-es are limited to.
+- Adjusting the refresh rate is only possible with a VBE 3.0 compliant
+ Video BIOS. Note that many nVidia Video BIOS-es claim to be VBE 3.0
+ compliant, while they simply ignore any refresh rate settings.
+
+3. Configuration
+----------------
+
+uvesafb can be compiled either as a module, or directly into the kernel.
+In both cases it supports the same set of configuration options, which
+are either given on the kernel command line or as module parameters, e.g.:
+
+ video=uvesafb:1024x768-32,mtrr:3,ywrap (compiled into the kernel)
+
+ # modprobe uvesafb mode_option=1024x768-32 mtrr=3 scroll=ywrap (module)
+
+Accepted options:
+
+ypan Enable display panning using the VESA protected mode
+ interface. The visible screen is just a window of the
+ video memory, console scrolling is done by changing the
+ start of the window. This option is available on x86
+ only and is the default option on that architecture.
+
+ywrap Same as ypan, but assumes your gfx board can wrap-around
+ the video memory (i.e. starts reading from top if it
+ reaches the end of video memory). Faster than ypan.
+ Available on x86 only.
+
+redraw Scroll by redrawing the affected part of the screen, this
+ is the default on non-x86.
+
+(If you're using uvesafb as a module, the above three options are
+ used a parameter of the scroll option, e.g. scroll=ypan.)
+
+vgapal Use the standard VGA registers for palette changes.
+
+pmipal Use the protected mode interface for palette changes.
+ This is the default if the protected mode interface is
+ available. Available on x86 only.
+
+mtrr:n Setup memory type range registers for the framebuffer
+ where n:
+ 0 - disabled (equivalent to nomtrr) (default)
+ 1 - uncachable
+ 2 - write-back
+ 3 - write-combining
+ 4 - write-through
+
+ If you see the following in dmesg, choose the type that matches
+ the old one. In this example, use "mtrr:2".
+...
+mtrr: type mismatch for e0000000,8000000 old: write-back new: write-combining
+...
+
+nomtrr Do not use memory type range registers.
+
+vremap:n
+ Remap 'n' MiB of video RAM. If 0 or not specified, remap memory
+ according to video mode.
+
+vtotal:n
+ If the video BIOS of your card incorrectly determines the total
+ amount of video RAM, use this option to override the BIOS (in MiB).
+
+<mode> The mode you want to set, in the standard modedb format. Refer to
+ modedb.txt for a detailed description. When uvesafb is compiled as
+ a module, the mode string should be provided as a value of the
+ 'mode_option' option.
+
+vbemode:x
+ Force the use of VBE mode x. The mode will only be set if it's
+ found in the VBE-provided list of supported modes.
+ NOTE: The mode number 'x' should be specified in VESA mode number
+ notation, not the Linux kernel one (eg. 257 instead of 769).
+ HINT: If you use this option because normal <mode> parameter does
+ not work for you and you use a X server, you'll probably want to
+ set the 'nocrtc' option to ensure that the video mode is properly
+ restored after console <-> X switches.
+
+nocrtc Do not use CRTC timings while setting the video mode. This option
+ has any effect only if the Video BIOS is VBE 3.0 compliant. Use it
+ if you have problems with modes set the standard way. Note that
+ using this option implies that any refresh rate adjustments will
+ be ignored and the refresh rate will stay at your BIOS default (60 Hz).
+
+noedid Do not try to fetch and use EDID-provided modes.
+
+noblank Disable hardware blanking.
+
+v86d:path
+ Set path to the v86d executable. This option is only available as
+ a module parameter, and not as a part of the video= string. If you
+ need to use it and have uvesafb built into the kernel, use
+ uvesafb.v86d="path".
+
+Additionally, the following parameters may be provided. They all override the
+EDID-provided values and BIOS defaults. Refer to your monitor's specs to get
+the correct values for maxhf, maxvf and maxclk for your hardware.
+
+maxhf:n Maximum horizontal frequency (in kHz).
+maxvf:n Maximum vertical frequency (in Hz).
+maxclk:n Maximum pixel clock (in MHz).
+
+4. The sysfs interface
+----------------------
+
+uvesafb provides several sysfs nodes for configurable parameters and
+additional information.
+
+Driver attributes:
+
+/sys/bus/platform/drivers/uvesafb
+ - v86d (default: /sbin/v86d)
+ Path to the v86d executable. v86d is started by uvesafb
+ if an instance of the daemon isn't already running.
+
+Device attributes:
+
+/sys/bus/platform/drivers/uvesafb/uvesafb.0
+ - nocrtc
+ Use the default refresh rate (60 Hz) if set to 1.
+
+ - oem_product_name
+ - oem_product_rev
+ - oem_string
+ - oem_vendor
+ Information about the card and its maker.
+
+ - vbe_modes
+ A list of video modes supported by the Video BIOS along with their
+ VBE mode numbers in hex.
+
+ - vbe_version
+ A BCD value indicating the implemented VBE standard.
+
+5. Miscellaneous
+----------------
+
+Uvesafb will set a video mode with the default refresh rate and timings
+from the Video BIOS if you set pixclock to 0 in fb_var_screeninfo.
+
+
+--
+ Michal Januszewski <spock@gentoo.org>
+ Last updated: 2009-03-30
+
+ Documentation of the uvesafb options is loosely based on vesafb.txt.
+
diff --git a/Documentation/fb/vesafb.txt b/Documentation/fb/vesafb.txt
new file mode 100644
index 00000000..950d5a65
--- /dev/null
+++ b/Documentation/fb/vesafb.txt
@@ -0,0 +1,181 @@
+
+What is vesafb?
+===============
+
+This is a generic driver for a graphic framebuffer on intel boxes.
+
+The idea is simple: Turn on graphics mode at boot time with the help
+of the BIOS, and use this as framebuffer device /dev/fb0, like the m68k
+(and other) ports do.
+
+This means we decide at boot time whenever we want to run in text or
+graphics mode. Switching mode later on (in protected mode) is
+impossible; BIOS calls work in real mode only. VESA BIOS Extensions
+Version 2.0 are required, because we need a linear frame buffer.
+
+Advantages:
+
+ * It provides a nice large console (128 cols + 48 lines with 1024x768)
+ without using tiny, unreadable fonts.
+ * You can run XF68_FBDev on top of /dev/fb0 (=> non-accelerated X11
+ support for every VBE 2.0 compliant graphics board).
+ * Most important: boot logo :-)
+
+Disadvantages:
+
+ * graphic mode is slower than text mode...
+
+
+How to use it?
+==============
+
+Switching modes is done using the vga=... boot parameter. Read
+Documentation/svga.txt for details.
+
+You should compile in both vgacon (for text mode) and vesafb (for
+graphics mode). Which of them takes over the console depends on
+whenever the specified mode is text or graphics.
+
+The graphic modes are NOT in the list which you get if you boot with
+vga=ask and hit return. The mode you wish to use is derived from the
+VESA mode number. Here are those VESA mode numbers:
+
+ | 640x480 800x600 1024x768 1280x1024
+----+-------------------------------------
+256 | 0x101 0x103 0x105 0x107
+32k | 0x110 0x113 0x116 0x119
+64k | 0x111 0x114 0x117 0x11A
+16M | 0x112 0x115 0x118 0x11B
+
+The video mode number of the Linux kernel is the VESA mode number plus
+0x200.
+
+ Linux_kernel_mode_number = VESA_mode_number + 0x200
+
+So the table for the Kernel mode numbers are:
+
+ | 640x480 800x600 1024x768 1280x1024
+----+-------------------------------------
+256 | 0x301 0x303 0x305 0x307
+32k | 0x310 0x313 0x316 0x319
+64k | 0x311 0x314 0x317 0x31A
+16M | 0x312 0x315 0x318 0x31B
+
+To enable one of those modes you have to specify "vga=ask" in the
+lilo.conf file and rerun LILO. Then you can type in the desired
+mode at the "vga=ask" prompt. For example if you like to use
+1024x768x256 colors you have to say "305" at this prompt.
+
+If this does not work, this might be because your BIOS does not support
+linear framebuffers or because it does not support this mode at all.
+Even if your board does, it might be the BIOS which does not. VESA BIOS
+Extensions v2.0 are required, 1.2 is NOT sufficient. You will get a
+"bad mode number" message if something goes wrong.
+
+1. Note: LILO cannot handle hex, for booting directly with
+ "vga=mode-number" you have to transform the numbers to decimal.
+2. Note: Some newer versions of LILO appear to work with those hex values,
+ if you set the 0x in front of the numbers.
+
+X11
+===
+
+XF68_FBDev should work just fine, but it is non-accelerated. Running
+another (accelerated) X-Server like XF86_SVGA might or might not work.
+It depends on X-Server and graphics board.
+
+The X-Server must restore the video mode correctly, else you end up
+with a broken console (and vesafb cannot do anything about this).
+
+
+Refresh rates
+=============
+
+There is no way to change the vesafb video mode and/or timings after
+booting linux. If you are not happy with the 60 Hz refresh rate, you
+have these options:
+
+ * configure and load the DOS-Tools for the graphics board (if
+ available) and boot linux with loadlin.
+ * use a native driver (matroxfb/atyfb) instead if vesafb. If none
+ is available, write a new one!
+ * VBE 3.0 might work too. I have neither a gfx board with VBE 3.0
+ support nor the specs, so I have not checked this yet.
+
+
+Configuration
+=============
+
+The VESA BIOS provides protected mode interface for changing
+some parameters. vesafb can use it for palette changes and
+to pan the display. It is turned off by default because it
+seems not to work with some BIOS versions, but there are options
+to turn it on.
+
+You can pass options to vesafb using "video=vesafb:option" on
+the kernel command line. Multiple options should be separated
+by comma, like this: "video=vesafb:ypan,invers"
+
+Accepted options:
+
+invers no comment...
+
+ypan enable display panning using the VESA protected mode
+ interface. The visible screen is just a window of the
+ video memory, console scrolling is done by changing the
+ start of the window.
+ pro: * scrolling (fullscreen) is fast, because there is
+ no need to copy around data.
+ * You'll get scrollback (the Shift-PgUp thing),
+ the video memory can be used as scrollback buffer
+ kontra: * scrolling only parts of the screen causes some
+ ugly flicker effects (boot logo flickers for
+ example).
+
+ywrap Same as ypan, but assumes your gfx board can wrap-around
+ the video memory (i.e. starts reading from top if it
+ reaches the end of video memory). Faster than ypan.
+
+redraw scroll by redrawing the affected part of the screen, this
+ is the safe (and slow) default.
+
+
+vgapal Use the standard vga registers for palette changes.
+ This is the default.
+pmipal Use the protected mode interface for palette changes.
+
+mtrr:n setup memory type range registers for the vesafb framebuffer
+ where n:
+ 0 - disabled (equivalent to nomtrr) (default)
+ 1 - uncachable
+ 2 - write-back
+ 3 - write-combining
+ 4 - write-through
+
+ If you see the following in dmesg, choose the type that matches the
+ old one. In this example, use "mtrr:2".
+...
+mtrr: type mismatch for e0000000,8000000 old: write-back new: write-combining
+...
+
+nomtrr disable mtrr
+
+vremap:n
+ remap 'n' MiB of video RAM. If 0 or not specified, remap memory
+ according to video mode. (2.5.66 patch/idea by Antonino Daplas
+ reversed to give override possibility (allocate more fb memory
+ than the kernel would) to 2.4 by tmb@iki.fi)
+
+vtotal:n
+ if the video BIOS of your card incorrectly determines the total
+ amount of video RAM, use this option to override the BIOS (in MiB).
+
+Have fun!
+
+ Gerd
+
+--
+Gerd Knorr <kraxel@goldbach.in-berlin.de>
+
+Minor (mostly typo) changes
+by Nico Schmoigl <schmoigl@rumms.uni-mannheim.de>
diff --git a/Documentation/fb/viafb.modes b/Documentation/fb/viafb.modes
new file mode 100644
index 00000000..02e5b487
--- /dev/null
+++ b/Documentation/fb/viafb.modes
@@ -0,0 +1,870 @@
+#
+#
+# These data are based on the CRTC parameters in
+#
+# VIA Integration Graphics Chip
+# (C) 2004 VIA Technologies Inc.
+#
+
+#
+# 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 640 480
+# Scan Frequency 31.469 kHz 59.94 Hz
+# Sync Width 3.813 us 0.064 ms
+# 12 chars 2 lines
+# Front Porch 0.636 us 0.318 ms
+# 2 chars 10 lines
+# Back Porch 1.907 us 1.048 ms
+# 6 chars 33 lines
+# Active Time 25.422 us 15.253 ms
+# 80 chars 480 lines
+# Blank Time 6.356 us 1.430 ms
+# 20 chars 45 lines
+# Polarity negative negative
+#
+
+mode "640x480-60"
+# D: 25.175 MHz, H: 31.469 kHz, V: 59.94 Hz
+ geometry 640 480 640 480 32
+ timings 39722 48 16 33 10 96 2 endmode mode "480x640-60"
+# D: 24.823 MHz, H: 39.780 kHz, V: 60.00 Hz
+ geometry 480 640 480 640 32 timings 39722 72 24 19 1 48 3 endmode
+#
+# 640x480, 75 Hz, Non-Interlaced (31.50 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 640 480
+# Scan Frequency 37.500 kHz 75.00 Hz
+# Sync Width 2.032 us 0.080 ms
+# 8 chars 3 lines
+# Front Porch 0.508 us 0.027 ms
+# 2 chars 1 lines
+# Back Porch 3.810 us 0.427 ms
+# 15 chars 16 lines
+# Active Time 20.317 us 12.800 ms
+# 80 chars 480 lines
+# Blank Time 6.349 us 0.533 ms
+# 25 chars 20 lines
+# Polarity negative negative
+#
+ mode "640x480-75"
+# D: 31.50 MHz, H: 37.500 kHz, V: 75.00 Hz
+ geometry 640 480 640 480 32 timings 31747 120 16 16 1 64 3 endmode
+#
+# 640x480, 85 Hz, Non-Interlaced (36.000 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 640 480
+# Scan Frequency 43.269 kHz 85.00 Hz
+# Sync Width 1.556 us 0.069 ms
+# 7 chars 3 lines
+# Front Porch 1.556 us 0.023 ms
+# 7 chars 1 lines
+# Back Porch 2.222 us 0.578 ms
+# 10 chars 25 lines
+# Active Time 17.778 us 11.093 ms
+# 80 chars 480 lines
+# Blank Time 5.333 us 0.670 ms
+# 24 chars 29 lines
+# Polarity negative negative
+#
+ mode "640x480-85"
+# D: 36.000 MHz, H: 43.269 kHz, V: 85.00 Hz
+ geometry 640 480 640 480 32 timings 27777 80 56 25 1 56 3 endmode
+#
+# 640x480, 100 Hz, Non-Interlaced (43.163 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 640 480
+# Scan Frequency 50.900 kHz 100.00 Hz
+# Sync Width 1.483 us 0.058 ms
+# 8 chars 3 lines
+# Front Porch 0.927 us 0.019 ms
+# 5 chars 1 lines
+# Back Porch 2.409 us 0.475 ms
+# 13 chars 25 lines
+# Active Time 14.827 us 9.430 ms
+# 80 chars 480 lines
+# Blank Time 4.819 us 0.570 ms
+# 26 chars 29 lines
+# Polarity positive positive
+#
+ mode "640x480-100"
+# D: 43.163 MHz, H: 50.900 kHz, V: 100.00 Hz
+ geometry 640 480 640 480 32 timings 23168 104 40 25 1 64 3 endmode
+#
+# 640x480, 120 Hz, Non-Interlaced (52.406 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 640 480
+# Scan Frequency 61.800 kHz 120.00 Hz
+# Sync Width 1.221 us 0.048 ms
+# 8 chars 3 lines
+# Front Porch 0.763 us 0.016 ms
+# 5 chars 1 lines
+# Back Porch 1.984 us 0.496 ms
+# 13 chars 31 lines
+# Active Time 12.212 us 7.767 ms
+# 80 chars 480 lines
+# Blank Time 3.969 us 0.566 ms
+# 26 chars 35 lines
+# Polarity positive positive
+#
+ mode "640x480-120"
+# D: 52.406 MHz, H: 61.800 kHz, V: 120.00 Hz
+ geometry 640 480 640 480 32 timings 19081 104 40 31 1 64 3 endmode
+#
+# 720x480, 60 Hz, Non-Interlaced (26.880 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 720 480
+# Scan Frequency 30.000 kHz 60.241 Hz
+# Sync Width 2.679 us 0.099 ms
+# 9 chars 3 lines
+# Front Porch 0.595 us 0.033 ms
+# 2 chars 1 lines
+# Back Porch 3.274 us 0.462 ms
+# 11 chars 14 lines
+# Active Time 26.786 us 16.000 ms
+# 90 chars 480 lines
+# Blank Time 6.548 us 0.600 ms
+# 22 chars 18 lines
+# Polarity positive positive
+#
+ mode "720x480-60"
+# D: 26.880 MHz, H: 30.000 kHz, V: 60.24 Hz
+ geometry 720 480 720 480 32 timings 37202 88 16 14 1 72 3 endmode
+#
+# 800x480, 60 Hz, Non-Interlaced (29.581 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 800 480
+# Scan Frequency 29.892 kHz 60.00 Hz
+# Sync Width 2.704 us 100.604 us
+# 10 chars 3 lines
+# Front Porch 0.541 us 33.535 us
+# 2 chars 1 lines
+# Back Porch 3.245 us 435.949 us
+# 12 chars 13 lines
+# Active Time 27.044 us 16.097 ms
+# 100 chars 480 lines
+# Blank Time 6.491 us 0.570 ms
+# 24 chars 17 lines
+# Polarity positive positive
+#
+ mode "800x480-60"
+# D: 29.500 MHz, H: 29.738 kHz, V: 60.00 Hz
+ geometry 800 480 800 480 32 timings 33805 96 24 10 3 72 7 endmode
+#
+# 720x576, 60 Hz, Non-Interlaced (32.668 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 720 576
+# Scan Frequency 35.820 kHz 60.00 Hz
+# Sync Width 2.204 us 0.083 ms
+# 9 chars 3 lines
+# Front Porch 0.735 us 0.027 ms
+# 3 chars 1 lines
+# Back Porch 2.939 us 0.459 ms
+# 12 chars 17 lines
+# Active Time 22.040 us 16.080 ms
+# 90 chars 476 lines
+# Blank Time 5.877 us 0.586 ms
+# 24 chars 21 lines
+# Polarity positive positive
+#
+ mode "720x576-60"
+# D: 32.668 MHz, H: 35.820 kHz, V: 60.00 Hz
+ geometry 720 576 720 576 32 timings 30611 96 24 17 1 72 3 endmode
+#
+# 800x600, 60 Hz, Non-Interlaced (40.00 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 800 600
+# Scan Frequency 37.879 kHz 60.32 Hz
+# Sync Width 3.200 us 0.106 ms
+# 16 chars 4 lines
+# Front Porch 1.000 us 0.026 ms
+# 5 chars 1 lines
+# Back Porch 2.200 us 0.607 ms
+# 11 chars 23 lines
+# Active Time 20.000 us 15.840 ms
+# 100 chars 600 lines
+# Blank Time 6.400 us 0.739 ms
+# 32 chars 28 lines
+# Polarity positive positive
+#
+ mode "800x600-60"
+# D: 40.00 MHz, H: 37.879 kHz, V: 60.32 Hz
+ geometry 800 600 800 600 32
+ timings 25000 88 40 23 1 128 4 hsync high vsync high endmode
+#
+# 800x600, 75 Hz, Non-Interlaced (49.50 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 800 600
+# Scan Frequency 46.875 kHz 75.00 Hz
+# Sync Width 1.616 us 0.064 ms
+# 10 chars 3 lines
+# Front Porch 0.323 us 0.021 ms
+# 2 chars 1 lines
+# Back Porch 3.232 us 0.448 ms
+# 20 chars 21 lines
+# Active Time 16.162 us 12.800 ms
+# 100 chars 600 lines
+# Blank Time 5.172 us 0.533 ms
+# 32 chars 25 lines
+# Polarity positive positive
+#
+ mode "800x600-75"
+# D: 49.50 MHz, H: 46.875 kHz, V: 75.00 Hz
+ geometry 800 600 800 600 32
+ timings 20203 160 16 21 1 80 3 hsync high vsync high endmode
+#
+# 800x600, 85 Hz, Non-Interlaced (56.25 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 800 600
+# Scan Frequency 53.674 kHz 85.061 Hz
+# Sync Width 1.138 us 0.056 ms
+# 8 chars 3 lines
+# Front Porch 0.569 us 0.019 ms
+# 4 chars 1 lines
+# Back Porch 2.702 us 0.503 ms
+# 19 chars 27 lines
+# Active Time 14.222 us 11.179 ms
+# 100 chars 600 lines
+# Blank Time 4.409 us 0.578 ms
+# 31 chars 31 lines
+# Polarity positive positive
+#
+ mode "800x600-85"
+# D: 56.25 MHz, H: 53.674 kHz, V: 85.061 Hz
+ geometry 800 600 800 600 32
+ timings 17777 152 32 27 1 64 3 hsync high vsync high endmode
+#
+# 800x600, 100 Hz, Non-Interlaced (67.50 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 800 600
+# Scan Frequency 62.500 kHz 100.00 Hz
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+# Polarity positive positive
+#
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+# D: 67.50 MHz, H: 62.500 kHz, V: 100.00 Hz
+ geometry 800 600 800 600 32
+ timings 14667 216 0 14 7 64 4 hsync high vsync high endmode
+#
+# 800x600, 120 Hz, Non-Interlaced (83.950 MHz dotclock)
+#
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+# Sync Width 1.048 us 0.039 ms
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+# Polarity positive positive
+#
+ mode "800x600-120"
+# D: 83.950 MHz, H: 77.160 kHz, V: 120.00 Hz
+ geometry 800 600 800 600 32
+ timings 11912 144 56 39 1 88 3 hsync high vsync high endmode
+#
+# 848x480, 60 Hz, Non-Interlaced (31.490 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 848 480
+# Scan Frequency 29.820 kHz 60.00 Hz
+# Sync Width 2.795 us 0.099 ms
+# 11 chars 3 lines
+# Front Porch 0.508 us 0.033 ms
+# 2 chars 1 lines
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+# 13 chars 13 lines
+# Active Time 26.929 us 16.097 ms
+# 106 chars 480 lines
+# Blank Time 6.605 us 0.570 ms
+# 26 chars 17 lines
+# Polarity positive positive
+#
+ mode "848x480-60"
+# D: 31.500 MHz, H: 29.830 kHz, V: 60.00 Hz
+ geometry 848 480 848 480 32
+ timings 31746 104 24 12 3 80 5 hsync high vsync high endmode
+#
+# 856x480, 60 Hz, Non-Interlaced (31.728 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 856 480
+# Scan Frequency 29.820 kHz 60.00 Hz
+# Sync Width 2.774 us 0.099 ms
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+# Front Porch 0.504 us 0.033 ms
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+# 107 chars 480 lines
+# Blank Time 6.556 us 0.570 ms
+# 26 chars 17 lines
+# Polarity positive positive
+#
+ mode "856x480-60"
+# D: 31.728 MHz, H: 29.820 kHz, V: 60.00 Hz
+ geometry 856 480 856 480 32
+ timings 31518 104 16 13 1 88 3
+ hsync high vsync high endmode mode "960x600-60"
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+ geometry 960 600 960 600 32 timings 22099 128 32 15 3 96 6 endmode
+#
+# 1000x600, 60 Hz, Non-Interlaced (48.068 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1000 600
+# Scan Frequency 37.320 kHz 60.00 Hz
+# Sync Width 2.164 us 0.080 ms
+# 13 chars 3 lines
+# Front Porch 0.832 us 0.027 ms
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+# Active Time 20.804 us 16.077 ms
+# 125 chars 600 lines
+# Blank Time 5.991 us 0.589 ms
+# 36 chars 22 lines
+# Polarity negative positive
+#
+ mode "1000x600-60"
+# D: 48.068 MHz, H: 37.320 kHz, V: 60.00 Hz
+ geometry 1000 600 1000 600 32
+ timings 20834 144 40 18 1 104 3 endmode mode "1024x576-60"
+# D: 46.996 MHz, H: 35.820 kHz, V: 60.00 Hz
+ geometry 1024 576 1024 576 32
+ timings 21278 144 40 17 1 104 3 endmode mode "1024x600-60"
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+ geometry 1024 600 1024 600 32
+ timings 20461 144 40 18 1 104 3 endmode mode "1088x612-60"
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+ geometry 1088 612 1088 612 32 timings 18877 152 48 16 3 104 5 endmode
+#
+# 1024x512, 60 Hz, Non-Interlaced (41.291 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1024 512
+# Scan Frequency 31.860 kHz 60.00 Hz
+# Sync Width 2.519 us 0.094 ms
+# 13 chars 3 lines
+# Front Porch 0.775 us 0.031 ms
+# 4 chars 1 lines
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+# Active Time 24.800 us 16.070 ms
+# 128 chars 512 lines
+# Blank Time 6.587 us 0.596 ms
+# 34 chars 19 lines
+# Polarity positive positive
+#
+ mode "1024x512-60"
+# D: 41.291 MHz, H: 31.860 kHz, V: 60.00 Hz
+ geometry 1024 512 1024 512 32
+ timings 24218 126 32 15 1 104 3 hsync high vsync high endmode
+#
+# 1024x600, 60 Hz, Non-Interlaced (48.875 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1024 768
+# Scan Frequency 37.252 kHz 60.00 Hz
+# Sync Width 2.128 us 80.532us
+# 13 chars 3 lines
+# Front Porch 0.818 us 26.844 us
+# 5 chars 1 lines
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+# Active Time 20.951 us 16.697 ms
+# 128 chars 622 lines
+# Blank Time 5.893 us 0.591 ms
+# 36 chars 22 lines
+# Polarity negative positive
+#
+#mode "1024x600-60"
+# # D: 48.875 MHz, H: 37.252 kHz, V: 60.00 Hz
+# geometry 1024 600 1024 600 32
+# timings 20460 144 40 18 1 104 3
+# endmode
+#
+# 1024x768, 60 Hz, Non-Interlaced (65.00 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1024 768
+# Scan Frequency 48.363 kHz 60.00 Hz
+# Sync Width 2.092 us 0.124 ms
+# 17 chars 6 lines
+# Front Porch 0.369 us 0.062 ms
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+# Active Time 15.754 us 15.880 ms
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+# Blank Time 4.923 us 0.786 ms
+# 40 chars 38 lines
+# Polarity negative negative
+#
+ mode "1024x768-60"
+# D: 65.00 MHz, H: 48.363 kHz, V: 60.00 Hz
+ geometry 1024 768 1024 768 32 timings 15385 160 24 29 3 136 6 endmode
+#
+# 1024x768, 75 Hz, Non-Interlaced (78.75 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1024 768
+# Scan Frequency 60.023 kHz 75.03 Hz
+# Sync Width 1.219 us 0.050 ms
+# 12 chars 3 lines
+# Front Porch 0.203 us 0.017 ms
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+# Active Time 13.003 us 12.795 ms
+# 128 chars 768 lines
+# Blank Time 3.657 us 0.533 ms
+# 36 chars 32 lines
+# Polarity positive positive
+#
+ mode "1024x768-75"
+# D: 78.75 MHz, H: 60.023 kHz, V: 75.03 Hz
+ geometry 1024 768 1024 768 32
+ timings 12699 176 16 28 1 96 3 hsync high vsync high endmode
+#
+# 1024x768, 85 Hz, Non-Interlaced (94.50 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1024 768
+# Scan Frequency 68.677 kHz 85.00 Hz
+# Sync Width 1.016 us 0.044 ms
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+# Front Porch 0.508 us 0.015 ms
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+# Active Time 10.836 us 11.183 ms
+# 128 chars 768 lines
+# Blank Time 3.725 us 0.582 ms
+# 44 chars 40 lines
+# Polarity positive positive
+#
+ mode "1024x768-85"
+# D: 94.50 MHz, H: 68.677 kHz, V: 85.00 Hz
+ geometry 1024 768 1024 768 32
+ timings 10582 208 48 36 1 96 3 hsync high vsync high endmode
+#
+# 1024x768, 100 Hz, Non-Interlaced (110.0 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1024 768
+# Scan Frequency 79.023 kHz 99.78 Hz
+# Sync Width 0.800 us 0.101 ms
+# 11 chars 8 lines
+# Front Porch 0.000 us 0.000 ms
+# 0 chars 0 lines
+# Back Porch 2.545 us 0.202 ms
+# 35 chars 16 lines
+# Active Time 9.309 us 9.719 ms
+# 128 chars 768 lines
+# Blank Time 3.345 us 0.304 ms
+# 46 chars 24 lines
+# Polarity negative negative
+#
+ mode "1024x768-100"
+# D: 113.3 MHz, H: 79.023 kHz, V: 99.78 Hz
+ geometry 1024 768 1024 768 32
+ timings 8825 280 0 16 0 88 8 endmode mode "1152x720-60"
+# D: 66.750 MHz, H: 44.859 kHz, V: 60.00 Hz
+ geometry 1152 720 1152 720 32 timings 14981 168 56 19 3 112 6 endmode
+#
+# 1152x864, 75 Hz, Non-Interlaced (110.0 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1152 864
+# Scan Frequency 75.137 kHz 74.99 Hz
+# Sync Width 1.309 us 0.106 ms
+# 18 chars 8 lines
+# Front Porch 0.245 us 0.599 ms
+# 3 chars 45 lines
+# Back Porch 1.282 us 1.132 ms
+# 18 chars 85 lines
+# Active Time 10.473 us 11.499 ms
+# 144 chars 864 lines
+# Blank Time 2.836 us 1.837 ms
+# 39 chars 138 lines
+# Polarity positive positive
+#
+ mode "1152x864-75"
+# D: 110.0 MHz, H: 75.137 kHz, V: 74.99 Hz
+ geometry 1152 864 1152 864 32
+ timings 9259 144 24 85 45 144 8
+ hsync high vsync high endmode mode "1200x720-60"
+# D: 70.184 MHz, H: 44.760 kHz, V: 60.00 Hz
+ geometry 1200 720 1200 720 32
+ timings 14253 184 28 22 1 128 3 endmode mode "1280x600-60"
+# D: 61.503 MHz, H: 37.320 kHz, V: 60.00 Hz
+ geometry 1280 600 1280 600 32
+ timings 16260 184 28 18 1 128 3 endmode mode "1280x720-50"
+# D: 60.466 MHz, H: 37.050 kHz, V: 50.00 Hz
+ geometry 1280 720 1280 720 32
+ timings 16538 176 48 17 1 128 3 endmode mode "1280x768-50"
+# D: 65.178 MHz, H: 39.550 kHz, V: 50.00 Hz
+ geometry 1280 768 1280 768 32 timings 15342 184 28 19 1 128 3 endmode
+#
+# 1280x768, 60 Hz, Non-Interlaced (80.136 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1280 768
+# Scan Frequency 47.700 kHz 60.00 Hz
+# Sync Width 1.697 us 0.063 ms
+# 17 chars 3 lines
+# Front Porch 0.799 us 0.021 ms
+# 8 chars 1 lines
+# Back Porch 2.496 us 0.483 ms
+# 25 chars 23 lines
+# Active Time 15.973 us 16.101 ms
+# 160 chars 768 lines
+# Blank Time 4.992 us 0.566 ms
+# 50 chars 27 lines
+# Polarity positive positive
+#
+ mode "1280x768-60"
+# D: 80.13 MHz, H: 47.700 kHz, V: 60.00 Hz
+ geometry 1280 768 1280 768 32
+ timings 12480 200 48 23 1 126 3 hsync high vsync high endmode
+#
+# 1280x800, 60 Hz, Non-Interlaced (83.375 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1280 800
+# Scan Frequency 49.628 kHz 60.00 Hz
+# Sync Width 1.631 us 60.450 us
+# 17 chars 3 lines
+# Front Porch 0.768 us 20.15 us
+# 8 chars 1 lines
+# Back Porch 2.399 us 0.483 ms
+# 25 chars 24 lines
+# Active Time 15.352 us 16.120 ms
+# 160 chars 800 lines
+# Blank Time 4.798 us 0.564 ms
+# 50 chars 28 lines
+# Polarity negtive positive
+#
+ mode "1280x800-60"
+# D: 83.500 MHz, H: 49.702 kHz, V: 60.00 Hz
+ geometry 1280 800 1280 800 32 timings 11994 200 72 22 3 128 6 endmode
+#
+# 1280x960, 60 Hz, Non-Interlaced (108.00 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1280 960
+# Scan Frequency 60.000 kHz 60.00 Hz
+# Sync Width 1.037 us 0.050 ms
+# 14 chars 3 lines
+# Front Porch 0.889 us 0.017 ms
+# 12 chars 1 lines
+# Back Porch 2.889 us 0.600 ms
+# 39 chars 36 lines
+# Active Time 11.852 us 16.000 ms
+# 160 chars 960 lines
+# Blank Time 4.815 us 0.667 ms
+# 65 chars 40 lines
+# Polarity positive positive
+#
+ mode "1280x960-60"
+# D: 108.00 MHz, H: 60.000 kHz, V: 60.00 Hz
+ geometry 1280 960 1280 960 32
+ timings 9259 312 96 36 1 112 3 hsync high vsync high endmode
+#
+# 1280x1024, 60 Hz, Non-Interlaced (108.00 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1280 1024
+# Scan Frequency 63.981 kHz 60.02 Hz
+# Sync Width 1.037 us 0.047 ms
+# 14 chars 3 lines
+# Front Porch 0.444 us 0.015 ms
+# 6 chars 1 lines
+# Back Porch 2.297 us 0.594 ms
+# 31 chars 38 lines
+# Active Time 11.852 us 16.005 ms
+# 160 chars 1024 lines
+# Blank Time 3.778 us 0.656 ms
+# 51 chars 42 lines
+# Polarity positive positive
+#
+ mode "1280x1024-60"
+# D: 108.00 MHz, H: 63.981 kHz, V: 60.02 Hz
+ geometry 1280 1024 1280 1024 32
+ timings 9260 248 48 38 1 112 3 hsync high vsync high endmode
+#
+# 1280x1024, 75 Hz, Non-Interlaced (135.00 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1280 1024
+# Scan Frequency 79.976 kHz 75.02 Hz
+# Sync Width 1.067 us 0.038 ms
+# 18 chars 3 lines
+# Front Porch 0.119 us 0.012 ms
+# 2 chars 1 lines
+# Back Porch 1.837 us 0.475 ms
+# 31 chars 38 lines
+# Active Time 9.481 us 12.804 ms
+# 160 chars 1024 lines
+# Blank Time 3.022 us 0.525 ms
+# 51 chars 42 lines
+# Polarity positive positive
+#
+ mode "1280x1024-75"
+# D: 135.00 MHz, H: 79.976 kHz, V: 75.02 Hz
+ geometry 1280 1024 1280 1024 32
+ timings 7408 248 16 38 1 144 3 hsync high vsync high endmode
+#
+# 1280x1024, 85 Hz, Non-Interlaced (157.50 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1280 1024
+# Scan Frequency 91.146 kHz 85.02 Hz
+# Sync Width 1.016 us 0.033 ms
+# 20 chars 3 lines
+# Front Porch 0.406 us 0.011 ms
+# 8 chars 1 lines
+# Back Porch 1.422 us 0.483 ms
+# 28 chars 44 lines
+# Active Time 8.127 us 11.235 ms
+# 160 chars 1024 lines
+# Blank Time 2.844 us 0.527 ms
+# 56 chars 48 lines
+# Polarity positive positive
+#
+ mode "1280x1024-85"
+# D: 157.50 MHz, H: 91.146 kHz, V: 85.02 Hz
+ geometry 1280 1024 1280 1024 32
+ timings 6349 224 64 44 1 160 3
+ hsync high vsync high endmode mode "1440x900-60"
+# D: 106.500 MHz, H: 55.935 kHz, V: 60.00 Hz
+ geometry 1440 900 1440 900 32
+ timings 9390 232 80 25 3 152 6
+ hsync high vsync high endmode mode "1440x900-75"
+# D: 136.750 MHz, H: 70.635 kHz, V: 75.00 Hz
+ geometry 1440 900 1440 900 32
+ timings 7315 248 96 33 3 152 6 hsync high vsync high endmode
+#
+# 1440x1050, 60 Hz, Non-Interlaced (125.10 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1440 1050
+# Scan Frequency 65.220 kHz 60.00 Hz
+# Sync Width 1.204 us 0.046 ms
+# 19 chars 3 lines
+# Front Porch 0.760 us 0.015 ms
+# 12 chars 1 lines
+# Back Porch 1.964 us 0.495 ms
+# 31 chars 33 lines
+# Active Time 11.405 us 16.099 ms
+# 180 chars 1050 lines
+# Blank Time 3.928 us 0.567 ms
+# 62 chars 37 lines
+# Polarity positive positive
+#
+ mode "1440x1050-60"
+# D: 125.10 MHz, H: 65.220 kHz, V: 60.00 Hz
+ geometry 1440 1050 1440 1050 32
+ timings 7993 248 96 33 1 152 3
+ hsync high vsync high endmode mode "1600x900-60"
+# D: 118.250 MHz, H: 55.990 kHz, V: 60.00 Hz
+ geometry 1600 900 1600 900 32
+ timings 8415 256 88 26 3 168 5 endmode mode "1600x1024-60"
+# D: 136.358 MHz, H: 63.600 kHz, V: 60.00 Hz
+ geometry 1600 1024 1600 1024 32 timings 7315 272 104 32 1 168 3 endmode
+#
+# 1600x1200, 60 Hz, Non-Interlaced (156.00 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1600 1200
+# Scan Frequency 76.200 kHz 60.00 Hz
+# Sync Width 1.026 us 0.105 ms
+# 20 chars 8 lines
+# Front Porch 0.205 us 0.131 ms
+# 4 chars 10 lines
+# Back Porch 1.636 us 0.682 ms
+# 32 chars 52 lines
+# Active Time 10.256 us 15.748 ms
+# 200 chars 1200 lines
+# Blank Time 2.872 us 0.866 ms
+# 56 chars 66 lines
+# Polarity negative negative
+#
+ mode "1600x1200-60"
+# D: 156.00 MHz, H: 76.200 kHz, V: 60.00 Hz
+ geometry 1600 1200 1600 1200 32 timings 6172 256 32 52 10 160 8 endmode
+#
+# 1600x1200, 75 Hz, Non-Interlaced (202.50 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1600 1200
+# Scan Frequency 93.750 kHz 75.00 Hz
+# Sync Width 0.948 us 0.032 ms
+# 24 chars 3 lines
+# Front Porch 0.316 us 0.011 ms
+# 8 chars 1 lines
+# Back Porch 1.501 us 0.491 ms
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+# Active Time 7.901 us 12.800 ms
+# 200 chars 1200 lines
+# Blank Time 2.765 us 0.533 ms
+# 70 chars 50 lines
+# Polarity positive positive
+#
+ mode "1600x1200-75"
+# D: 202.50 MHz, H: 93.750 kHz, V: 75.00 Hz
+ geometry 1600 1200 1600 1200 32
+ timings 4938 304 64 46 1 192 3
+ hsync high vsync high endmode mode "1680x1050-60"
+# D: 146.250 MHz, H: 65.290 kHz, V: 59.954 Hz
+ geometry 1680 1050 1680 1050 32
+ timings 6814 280 104 30 3 176 6
+ hsync high vsync high endmode mode "1680x1050-75"
+# D: 187.000 MHz, H: 82.306 kHz, V: 74.892 Hz
+ geometry 1680 1050 1680 1050 32
+ timings 5348 296 120 40 3 176 6
+ hsync high vsync high endmode mode "1792x1344-60"
+# D: 202.975 MHz, H: 83.460 kHz, V: 60.00 Hz
+ geometry 1792 1344 1792 1344 32
+ timings 4902 320 128 43 1 192 3
+ hsync high vsync high endmode mode "1856x1392-60"
+# D: 218.571 MHz, H: 86.460 kHz, V: 60.00 Hz
+ geometry 1856 1392 1856 1392 32
+ timings 4577 336 136 45 1 200 3
+ hsync high vsync high endmode mode "1920x1200-60"
+# D: 193.250 MHz, H: 74.556 kHz, V: 60.00 Hz
+ geometry 1920 1200 1920 1200 32
+ timings 5173 336 136 36 3 200 6
+ hsync high vsync high endmode mode "1920x1440-60"
+# D: 234.000 MHz, H:90.000 kHz, V: 60.00 Hz
+ geometry 1920 1440 1920 1440 32
+ timings 4274 344 128 56 1 208 3
+ hsync high vsync high endmode mode "1920x1440-75"
+# D: 297.000 MHz, H:112.500 kHz, V: 75.00 Hz
+ geometry 1920 1440 1920 1440 32
+ timings 3367 352 144 56 1 224 3
+ hsync high vsync high endmode mode "2048x1536-60"
+# D: 267.250 MHz, H: 95.446 kHz, V: 60.00 Hz
+ geometry 2048 1536 2048 1536 32
+ timings 3742 376 152 49 3 224 4 hsync high vsync high endmode
+#
+# 1280x720, 60 Hz, Non-Interlaced (74.481 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1280 720
+# Scan Frequency 44.760 kHz 60.00 Hz
+# Sync Width 1.826 us 67.024 ms
+# 17 chars 3 lines
+# Front Porch 0.752 us 22.341 ms
+# 7 chars 1 lines
+# Back Porch 2.578 us 491.510 ms
+# 24 chars 22 lines
+# Active Time 17.186 us 16.086 ms
+# 160 chars 720 lines
+# Blank Time 5.156 us 0.581 ms
+# 48 chars 26 lines
+# Polarity negative negative
+#
+ mode "1280x720-60"
+# D: 74.481 MHz, H: 44.760 kHz, V: 60.00 Hz
+ geometry 1280 720 1280 720 32 timings 13426 192 64 22 1 136 3 endmode
+#
+# 1920x1080, 60 Hz, Non-Interlaced (172.798 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1920 1080
+# Scan Frequency 67.080 kHz 60.00 Hz
+# Sync Width 1.204 us 44.723 ms
+# 26 chars 3 lines
+# Front Porch 0.694 us 14.908 ms
+# 15 chars 1 lines
+# Back Porch 1.898 us 506.857 ms
+# 41 chars 34 lines
+# Active Time 11.111 us 16.100 ms
+# 240 chars 1080 lines
+# Blank Time 3.796 us 0.566 ms
+# 82 chars 38 lines
+# Polarity negative negative
+#
+ mode "1920x1080-60"
+# D: 74.481 MHz, H: 67.080 kHz, V: 60.00 Hz
+ geometry 1920 1080 1920 1080 32 timings 5787 328 120 34 1 208 3 endmode
+#
+# 1400x1050, 60 Hz, Non-Interlaced (122.61 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1400 1050
+# Scan Frequency 65.218 kHz 59.99 Hz
+# Sync Width 1.037 us 0.047 ms
+# 19 chars 3 lines
+# Front Porch 0.444 us 0.015 ms
+# 11 chars 1 lines
+# Back Porch 1.185 us 0.188 ms
+# 30 chars 33 lines
+# Active Time 12.963 us 16.411 ms
+# 175 chars 1050 lines
+# Blank Time 2.667 us 0.250 ms
+# 60 chars 37 lines
+# Polarity negative positive
+#
+ mode "1400x1050-60"
+# D: 122.750 MHz, H: 65.317 kHz, V: 59.99 Hz
+ geometry 1400 1050 1408 1050 32
+ timings 8214 232 88 32 3 144 4 endmode mode "1400x1050-75"
+# D: 156.000 MHz, H: 82.278 kHz, V: 74.867 Hz
+ geometry 1400 1050 1408 1050 32 timings 6410 248 104 42 3 144 4 endmode
+#
+# 1366x768, 60 Hz, Non-Interlaced (85.86 MHz dotclock)
+#
+# Horizontal Vertical
+# Resolution 1366 768
+# Scan Frequency 47.700 kHz 60.00 Hz
+# Sync Width 1.677 us 0.063 ms
+# 18 chars 3 lines
+# Front Porch 0.839 us 0.021 ms
+# 9 chars 1 lines
+# Back Porch 2.516 us 0.482 ms
+# 27 chars 23 lines
+# Active Time 15.933 us 16.101 ms
+# 171 chars 768 lines
+# Blank Time 5.031 us 0.566 ms
+# 54 chars 27 lines
+# Polarity negative positive
+#
+ mode "1360x768-60"
+# D: 84.750 MHz, H: 47.720 kHz, V: 60.00 Hz
+ geometry 1360 768 1360 768 32
+ timings 11799 208 72 22 3 136 5 endmode mode "1366x768-60"
+# D: 85.86 MHz, H: 47.700 kHz, V: 60.00 Hz
+ geometry 1366 768 1366 768 32
+ timings 11647 216 72 23 1 144 3 endmode mode "1366x768-50"
+# D: 69,924 MHz, H: 39.550 kHz, V: 50.00 Hz
+ geometry 1366 768 1366 768 32 timings 14301 200 56 19 1 144 3 endmode
diff --git a/Documentation/fb/viafb.txt b/Documentation/fb/viafb.txt
new file mode 100644
index 00000000..444e34b5
--- /dev/null
+++ b/Documentation/fb/viafb.txt
@@ -0,0 +1,252 @@
+
+ VIA Integration Graphic Chip Console Framebuffer Driver
+
+[Platform]
+-----------------------
+ The console framebuffer driver is for graphics chips of
+ VIA UniChrome Family(CLE266, PM800 / CN400 / CN300,
+ P4M800CE / P4M800Pro / CN700 / VN800,
+ CX700 / VX700, K8M890, P4M890,
+ CN896 / P4M900, VX800, VX855)
+
+[Driver features]
+------------------------
+ Device: CRT, LCD, DVI
+
+ Support viafb_mode:
+ CRT:
+ 640x480(60, 75, 85, 100, 120 Hz), 720x480(60 Hz),
+ 720x576(60 Hz), 800x600(60, 75, 85, 100, 120 Hz),
+ 848x480(60 Hz), 856x480(60 Hz), 1024x512(60 Hz),
+ 1024x768(60, 75, 85, 100 Hz), 1152x864(75 Hz),
+ 1280x768(60 Hz), 1280x960(60 Hz), 1280x1024(60, 75, 85 Hz),
+ 1440x1050(60 Hz), 1600x1200(60, 75 Hz), 1280x720(60 Hz),
+ 1920x1080(60 Hz), 1400x1050(60 Hz), 800x480(60 Hz)
+
+ color depth: 8 bpp, 16 bpp, 32 bpp supports.
+
+ Support 2D hardware accelerator.
+
+[Using the viafb module]
+-- -- --------------------
+ Start viafb with default settings:
+ #modprobe viafb
+
+ Start viafb with with user options:
+ #modprobe viafb viafb_mode=800x600 viafb_bpp=16 viafb_refresh=60
+ viafb_active_dev=CRT+DVI viafb_dvi_port=DVP1
+ viafb_mode1=1024x768 viafb_bpp=16 viafb_refresh1=60
+ viafb_SAMM_ON=1
+
+ viafb_mode:
+ 640x480 (default)
+ 720x480
+ 800x600
+ 1024x768
+ ......
+
+ viafb_bpp:
+ 8, 16, 32 (default:32)
+
+ viafb_refresh:
+ 60, 75, 85, 100, 120 (default:60)
+
+ viafb_lcd_dsp_method:
+ 0 : expansion (default)
+ 1 : centering
+
+ viafb_lcd_mode:
+ 0 : LCD panel with LSB data format input (default)
+ 1 : LCD panel with MSB data format input
+
+ viafb_lcd_panel_id:
+ 0 : Resolution: 640x480, Channel: single, Dithering: Enable
+ 1 : Resolution: 800x600, Channel: single, Dithering: Enable
+ 2 : Resolution: 1024x768, Channel: single, Dithering: Enable (default)
+ 3 : Resolution: 1280x768, Channel: single, Dithering: Enable
+ 4 : Resolution: 1280x1024, Channel: dual, Dithering: Enable
+ 5 : Resolution: 1400x1050, Channel: dual, Dithering: Enable
+ 6 : Resolution: 1600x1200, Channel: dual, Dithering: Enable
+
+ 8 : Resolution: 800x480, Channel: single, Dithering: Enable
+ 9 : Resolution: 1024x768, Channel: dual, Dithering: Enable
+ 10: Resolution: 1024x768, Channel: single, Dithering: Disable
+ 11: Resolution: 1024x768, Channel: dual, Dithering: Disable
+ 12: Resolution: 1280x768, Channel: single, Dithering: Disable
+ 13: Resolution: 1280x1024, Channel: dual, Dithering: Disable
+ 14: Resolution: 1400x1050, Channel: dual, Dithering: Disable
+ 15: Resolution: 1600x1200, Channel: dual, Dithering: Disable
+ 16: Resolution: 1366x768, Channel: single, Dithering: Disable
+ 17: Resolution: 1024x600, Channel: single, Dithering: Enable
+ 18: Resolution: 1280x768, Channel: dual, Dithering: Enable
+ 19: Resolution: 1280x800, Channel: single, Dithering: Enable
+
+ viafb_accel:
+ 0 : No 2D Hardware Acceleration
+ 1 : 2D Hardware Acceleration (default)
+
+ viafb_SAMM_ON:
+ 0 : viafb_SAMM_ON disable (default)
+ 1 : viafb_SAMM_ON enable
+
+ viafb_mode1: (secondary display device)
+ 640x480 (default)
+ 720x480
+ 800x600
+ 1024x768
+ ... ...
+
+ viafb_bpp1: (secondary display device)
+ 8, 16, 32 (default:32)
+
+ viafb_refresh1: (secondary display device)
+ 60, 75, 85, 100, 120 (default:60)
+
+ viafb_active_dev:
+ This option is used to specify active devices.(CRT, DVI, CRT+LCD...)
+ DVI stands for DVI or HDMI, E.g., If you want to enable HDMI,
+ set viafb_active_dev=DVI. In SAMM case, the previous of
+ viafb_active_dev is primary device, and the following is
+ secondary device.
+
+ For example:
+ To enable one device, such as DVI only, we can use:
+ modprobe viafb viafb_active_dev=DVI
+ To enable two devices, such as CRT+DVI:
+ modprobe viafb viafb_active_dev=CRT+DVI;
+
+ For DuoView case, we can use:
+ modprobe viafb viafb_active_dev=CRT+DVI
+ OR
+ modprobe viafb viafb_active_dev=DVI+CRT...
+
+ For SAMM case:
+ If CRT is primary and DVI is secondary, we should use:
+ modprobe viafb viafb_active_dev=CRT+DVI viafb_SAMM_ON=1...
+ If DVI is primary and CRT is secondary, we should use:
+ modprobe viafb viafb_active_dev=DVI+CRT viafb_SAMM_ON=1...
+
+ viafb_display_hardware_layout:
+ This option is used to specify display hardware layout for CX700 chip.
+ 1 : LCD only
+ 2 : DVI only
+ 3 : LCD+DVI (default)
+ 4 : LCD1+LCD2 (internal + internal)
+ 16: LCD1+ExternalLCD2 (internal + external)
+
+ viafb_second_size:
+ This option is used to set second device memory size(MB) in SAMM case.
+ The minimal size is 16.
+
+ viafb_platform_epia_dvi:
+ This option is used to enable DVI on EPIA - M
+ 0 : No DVI on EPIA - M (default)
+ 1 : DVI on EPIA - M
+
+ viafb_bus_width:
+ When using 24 - Bit Bus Width Digital Interface,
+ this option should be set.
+ 12: 12-Bit LVDS or 12-Bit TMDS (default)
+ 24: 24-Bit LVDS or 24-Bit TMDS
+
+ viafb_device_lcd_dualedge:
+ When using Dual Edge Panel, this option should be set.
+ 0 : No Dual Edge Panel (default)
+ 1 : Dual Edge Panel
+
+ viafb_lcd_port:
+ This option is used to specify LCD output port,
+ available values are "DVP0" "DVP1" "DFP_HIGHLOW" "DFP_HIGH" "DFP_LOW".
+ for external LCD + external DVI on CX700(External LCD is on DVP0),
+ we should use:
+ modprobe viafb viafb_lcd_port=DVP0...
+
+Notes:
+ 1. CRT may not display properly for DuoView CRT & DVI display at
+ the "640x480" PAL mode with DVI overscan enabled.
+ 2. SAMM stands for single adapter multi monitors. It is different from
+ multi-head since SAMM support multi monitor at driver layers, thus fbcon
+ layer doesn't even know about it; SAMM's second screen doesn't have a
+ device node file, thus a user mode application can't access it directly.
+ When SAMM is enabled, viafb_mode and viafb_mode1, viafb_bpp and
+ viafb_bpp1, viafb_refresh and viafb_refresh1 can be different.
+ 3. When console is depending on viafbinfo1, dynamically change resolution
+ and bpp, need to call VIAFB specified ioctl interface VIAFB_SET_DEVICE
+ instead of calling common ioctl function FBIOPUT_VSCREENINFO since
+ viafb doesn't support multi-head well, or it will cause screen crush.
+
+
+[Configure viafb with "fbset" tool]
+-----------------------------------
+ "fbset" is an inbox utility of Linux.
+ 1. Inquire current viafb information, type,
+ # fbset -i
+
+ 2. Set various resolutions and viafb_refresh rates,
+ # fbset <resolution-vertical_sync>
+
+ example,
+ # fbset "1024x768-75"
+ or
+ # fbset -g 1024 768 1024 768 32
+ Check the file "/etc/fb.modes" to find display modes available.
+
+ 3. Set the color depth,
+ # fbset -depth <value>
+
+ example,
+ # fbset -depth 16
+
+
+[Configure viafb via /proc]
+---------------------------
+ The following files exist in /proc/viafb
+
+ supported_output_devices
+
+ This read-only file contains a full ',' separated list containing all
+ output devices that could be available on your platform. It is likely
+ that not all of those have a connector on your hardware but it should
+ provide a good starting point to figure out which of those names match
+ a real connector.
+ Example:
+ # cat /proc/viafb/supported_output_devices
+
+ iga1/output_devices
+ iga2/output_devices
+
+ These two files are readable and writable. iga1 and iga2 are the two
+ independent units that produce the screen image. Those images can be
+ forwarded to one or more output devices. Reading those files is a way
+ to query which output devices are currently used by an iga.
+ Example:
+ # cat /proc/viafb/iga1/output_devices
+ If there are no output devices printed the output of this iga is lost.
+ This can happen for example if only one (the other) iga is used.
+ Writing to these files allows adjusting the output devices during
+ runtime. One can add new devices, remove existing ones or switch
+ between igas. Essentially you can write a ',' separated list of device
+ names (or a single one) in the same format as the output to those
+ files. You can add a '+' or '-' as a prefix allowing simple addition
+ and removal of devices. So a prefix '+' adds the devices from your list
+ to the already existing ones, '-' removes the listed devices from the
+ existing ones and if no prefix is given it replaces all existing ones
+ with the listed ones. If you remove devices they are expected to turn
+ off. If you add devices that are already part of the other iga they are
+ removed there and added to the new one.
+ Examples:
+ Add CRT as output device to iga1
+ # echo +CRT > /proc/viafb/iga1/output_devices
+
+ Remove (turn off) DVP1 and LVDS1 as output devices of iga2
+ # echo -DVP1,LVDS1 > /proc/viafb/iga2/output_devices
+
+ Replace all iga1 output devices by CRT
+ # echo CRT > /proc/viafb/iga1/output_devices
+
+
+[Bootup with viafb]:
+--------------------
+ Add the following line to your grub.conf:
+ append = "video=viafb:viafb_mode=1024x768,viafb_bpp=32,viafb_refresh=85"
+
diff --git a/Documentation/fb/vt8623fb.txt b/Documentation/fb/vt8623fb.txt
new file mode 100644
index 00000000..f654576c
--- /dev/null
+++ b/Documentation/fb/vt8623fb.txt
@@ -0,0 +1,64 @@
+
+ vt8623fb - fbdev driver for graphics core in VIA VT8623 chipset
+ ===============================================================
+
+
+Supported Hardware
+==================
+
+ VIA VT8623 [CLE266] chipset and its graphics core
+ (known as CastleRock or Unichrome)
+
+I tested vt8623fb on VIA EPIA ML-6000
+
+
+Supported Features
+==================
+
+ * 4 bpp pseudocolor modes (with 18bit palette, two variants)
+ * 8 bpp pseudocolor mode (with 18bit palette)
+ * 16 bpp truecolor mode (RGB 565)
+ * 32 bpp truecolor mode (RGB 888)
+ * text mode (activated by bpp = 0)
+ * doublescan mode variant (not available in text mode)
+ * panning in both directions
+ * suspend/resume support
+ * DPMS support
+
+Text mode is supported even in higher resolutions, but there is limitation to
+lower pixclocks (maximum about 100 MHz). This limitation is not enforced by
+driver. Text mode supports 8bit wide fonts only (hardware limitation) and
+16bit tall fonts (driver limitation).
+
+There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with
+packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode
+with interleaved planes (1 byte interleave), MSB first. Both modes support
+8bit wide fonts only (driver limitation).
+
+Suspend/resume works on systems that initialize video card during resume and
+if device is active (for example used by fbcon).
+
+
+Missing Features
+================
+(alias TODO list)
+
+ * secondary (not initialized by BIOS) device support
+ * MMIO support
+ * interlaced mode variant
+ * support for fontwidths != 8 in 4 bpp modes
+ * support for fontheight != 16 in text mode
+ * hardware cursor
+ * video overlay support
+ * vsync synchronization
+ * acceleration support (8514-like 2D, busmaster transfers)
+
+
+Known bugs
+==========
+
+ * cursor disable in text mode doesn't work
+
+
+--
+Ondrej Zajicek <santiago@crfreenet.org>