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Jeff Garzik committed Aug 15, 2005
2 parents 4339d32 + 4c0e176 commit 20445cc
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4 changes: 2 additions & 2 deletions CREDITS
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Expand Up @@ -2380,8 +2380,8 @@ E: tmolina@cablespeed.com
D: bug fixes, documentation, minor hackery

N: James Morris
E: jmorris@redhat.com
W: http://www.intercode.com.au/jmorris/
E: jmorris@namei.org
W: http://namei.org/
D: Netfilter, Linux Security Modules (LSM), SELinux, IPSec,
D: Crypto API, general networking, miscellaneous.
S: PO Box 707
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5 changes: 5 additions & 0 deletions Documentation/SubmittingPatches
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Expand Up @@ -149,6 +149,11 @@ USB, framebuffer devices, the VFS, the SCSI subsystem, etc. See the
MAINTAINERS file for a mailing list that relates specifically to
your change.

If changes affect userland-kernel interfaces, please send
the MAN-PAGES maintainer (as listed in the MAINTAINERS file)
a man-pages patch, or at least a notification of the change,
so that some information makes its way into the manual pages.

Even if the maintainer did not respond in step #4, make sure to ALWAYS
copy the maintainer when you change their code.

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93 changes: 93 additions & 0 deletions Documentation/arm/Samsung-S3C24XX/USB-Host.txt
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@@ -0,0 +1,93 @@
S3C24XX USB Host support
========================



Introduction
------------

This document details the S3C2410/S3C2440 in-built OHCI USB host support.

Configuration
-------------

Enable at least the following kernel options:

menuconfig:

Device Drivers --->
USB support --->
<*> Support for Host-side USB
<*> OHCI HCD support


.config:
CONFIG_USB
CONFIG_USB_OHCI_HCD


Once these options are configured, the standard set of USB device
drivers can be configured and used.


Board Support
-------------

The driver attaches to a platform device, which will need to be
added by the board specific support file in linux/arch/arm/mach-s3c2410,
such as mach-bast.c or mach-smdk2410.c

The platform device's platform_data field is only needed if the
board implements extra power control or over-current monitoring.

The OHCI driver does not ensure the state of the S3C2410's MISCCTRL
register, so if both ports are to be used for the host, then it is
the board support file's responsibility to ensure that the second
port is configured to be connected to the OHCI core.


Platform Data
-------------

See linux/include/asm-arm/arch-s3c2410/usb-control.h for the
descriptions of the platform device data. An implementation
can be found in linux/arch/arm/mach-s3c2410/usb-simtec.c .

The `struct s3c2410_hcd_info` contains a pair of functions
that get called to enable over-current detection, and to
control the port power status.

The ports are numbered 0 and 1.

power_control:

Called to enable or disable the power on the port.

enable_oc:

Called to enable or disable the over-current monitoring.
This should claim or release the resources being used to
check the power condition on the port, such as an IRQ.

report_oc:

The OHCI driver fills this field in for the over-current code
to call when there is a change to the over-current state on
an port. The ports argument is a bitmask of 1 bit per port,
with bit X being 1 for an over-current on port X.

The function s3c2410_usb_report_oc() has been provided to
ensure this is called correctly.

port[x]:

This is struct describes each port, 0 or 1. The platform driver
should set the flags field of each port to S3C_HCDFLG_USED if
the port is enabled.



Document Author
---------------

Ben Dooks, (c) 2005 Simtec Electronics
1 change: 1 addition & 0 deletions Documentation/dontdiff
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Expand Up @@ -104,6 +104,7 @@ logo_*.c
logo_*_clut224.c
logo_*_mono.c
lxdialog
mach-types
mach-types.h
make_times_h
map
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16 changes: 15 additions & 1 deletion Documentation/fb/vesafb.txt
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Expand Up @@ -144,7 +144,21 @@ vgapal Use the standard vga registers for palette changes.
This is the default.
pmipal Use the protected mode interface for palette changes.

mtrr setup memory type range registers for the vesafb framebuffer.
mtrr:n setup memory type range registers for the vesafb framebuffer
where n:
0 - disabled (equivalent to nomtrr)
1 - uncachable
2 - write-back
3 - write-combining (default)
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
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