Commit 689237ab authored by Thomas Zimmermann's avatar Thomas Zimmermann Committed by Helge Deller
Browse files

fbdev/intelfb: Remove driver 



From looking at the PCI IDs, every device supported by intelfb is
also supported by i915. Anyone still using intelfb should please
move on to i915, which does everything intelfb does but better.

Removing intelfb is motivated by the driver's excessive use of the
global screen_info state. The state belongs to architecture and
firmware code; device drivers should not attempt to access it. But
fixing intelfb would require a significant change in the driver's
probing logic. As intelfb has been obsolete for nearly 2 decades,
it is probably not worth the effort. Let's just remove it. Also
remove the related documentation.

Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Acked-by: default avatarMaik Broemme <mbroemme@libmpq.org>
Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent c25a19af

Documentation/fb/index.rst

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@@ -19,7 +19,6 @@ Frame Buffer 
    framebuffer

    gxfb

    intel810

    intelfb

    internals

    lxfb

    matroxfb

Documentation/fb/intelfb.rst

deleted100644 → 0
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=============================================================

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

Documentation/userspace-api/ioctl/ioctl-number.rst

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@@ -128,7 +128,6 @@ Code Seq# Include File Comments 
'F'   all    linux/fb.h                                              conflict!

'F'   01-02  drivers/scsi/pmcraid.h                                  conflict!

'F'   20     drivers/video/fsl-diu-fb.h                              conflict!

'F'   20     drivers/video/intelfb/intelfb.h                         conflict!

'F'   20     linux/ivtvfb.h                                          conflict!

'F'   20     linux/matroxfb.h                                        conflict!

'F'   20     drivers/video/aty/atyfb_base.c                          conflict!

MAINTAINERS

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@@ -10652,13 +10652,6 @@ S: Supported 
F:	drivers/infiniband/hw/irdma/

F:	include/uapi/rdma/irdma-abi.h









INTEL FRAMEBUFFER DRIVER (excluding 810 and 815)









M:	Maik Broemme <mbroemme@libmpq.org>









L:	linux-fbdev@vger.kernel.org









S:	Maintained









F:	Documentation/fb/intelfb.rst









F:	drivers/video/fbdev/intelfb/

















INTEL GPIO DRIVERS









M:	Andy Shevchenko <andy@kernel.org>









L:	linux-gpio@vger.kernel.org
































drivers/Makefile



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−2






























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@@ -71,9 +71,8 @@ obj-y				+= gpu/

















obj-$(CONFIG_CONNECTOR)		+= connector/



















# i810fb and intelfb depend on char/agp/









# i810fb depends on char/agp/









obj-$(CONFIG_FB_I810)           += video/fbdev/i810/









obj-$(CONFIG_FB_INTEL)          += video/fbdev/intelfb/



















obj-$(CONFIG_PARPORT)		+= parport/









obj-y				+= base/ block/ misc/ mfd/ nfc/