6 files changed, 538 insertions, 0 deletions
diff --git a/Documentation/arm/Samsung-S3C24XX/EB2410ITX.txt b/Documentation/arm/Samsung-S3C24XX/EB2410ITX.txt
new file mode 100644
index 00000000000..000e3d7a78b
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/EB2410ITX.txt
@@ -0,0 +1,58 @@
+		Simtec Electronics EB2410ITX (BAST)
+		===================================
+
+	http://www.simtec.co.uk/products/EB2410ITX/
+
+Introduction
+------------
+
+  The EB2410ITX is a S3C2410 based development board with a variety of
+  peripherals and expansion connectors. This board is also known by
+  the shortened name of Bast.
+
+
+Configuration
+-------------
+
+  To set the default configuration, use `make bast_defconfig` which
+  supports the commonly used features of this board.
+
+
+Support
+-------
+
+  Official support information can be found on the Simtec Electronics
+  website, at the product page http://www.simtec.co.uk/products/EB2410ITX/
+
+  Useful links:
+
+    - Resources Page http://www.simtec.co.uk/products/EB2410ITX/resources.html
+
+    - Board FAQ at http://www.simtec.co.uk/products/EB2410ITX/faq.html
+
+    - Bootloader info http://www.simtec.co.uk/products/SWABLE/resources.html
+      and FAQ http://www.simtec.co.uk/products/SWABLE/faq.html
+
+
+MTD
+---
+
+  The NAND and NOR support has been merged from the linux-mtd project.
+  Any prolbems, see http://www.linux-mtd.infradead.org/ for more
+  information or up-to-date versions of linux-mtd.
+
+
+IDE
+---
+
+  Both onboard IDE ports are supported, however there is no support for
+  changing speed of devices, PIO Mode 4 capable drives should be used.
+
+
+Maintainers
+-----------
+
+  This board is maintained by Simtec Electronics.
+
+
+(c) 2004 Ben Dooks, Simtec Electronics
diff --git a/Documentation/arm/Samsung-S3C24XX/GPIO.txt b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
new file mode 100644
index 00000000000..0822764ec27
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/GPIO.txt
@@ -0,0 +1,122 @@
+			S3C2410 GPIO Control
+			====================
+
+Introduction
+------------
+
+  The s3c2410 kernel provides an interface to configure and
+  manipulate the state of the GPIO pins, and find out other
+  information about them.
+
+  There are a number of conditions attached to the configuration
+  of the s3c2410 GPIO system, please read the Samsung provided
+  data-sheet/users manual to find out the complete list.
+
+
+Headers
+-------
+
+  See include/asm-arm/arch-s3c2410/regs-gpio.h for the list
+  of GPIO pins, and the configuration values for them. This
+  is included by using #include <asm/arch/regs-gpio.h>
+
+  The GPIO management functions are defined in the hardware
+  header include/asm-arm/arch-s3c2410/hardware.h which can be
+  included by #include <asm/arch/hardware.h>
+
+  A useful ammount of documentation can be found in the hardware
+  header on how the GPIO functions (and others) work.
+
+  Whilst a number of these functions do make some checks on what
+  is passed to them, for speed of use, they may not always ensure
+  that the user supplied data to them is correct.
+
+
+PIN Numbers
+-----------
+
+  Each pin has an unique number associated with it in regs-gpio.h,
+  eg S3C2410_GPA0 or S3C2410_GPF1. These defines are used to tell
+  the GPIO functions which pin is to be used.
+
+
+Configuring a pin
+-----------------
+
+  The following function allows the configuration of a given pin to
+  be changed.
+
+    void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);
+
+  Eg:
+
+     s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0);
+     s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1);
+
+   which would turn GPA0 into the lowest Address line A0, and set
+   GPE8 to be connected to the SDIO/MMC controller's SDDAT1 line.
+
+
+Reading the current configuration
+---------------------------------
+
+  The current configuration of a pin can be read by using:
+
+  s3c2410_gpio_getcfg(unsigned int pin);
+
+  The return value will be from the same set of values which can be
+  passed to s3c2410_gpio_cfgpin().
+
+
+Configuring a pull-up resistor
+------------------------------
+
+  A large proportion of the GPIO pins on the S3C2410 can have weak
+  pull-up resistors enabled. This can be configured by the following
+  function:
+
+    void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
+
+  Where the to value is zero to set the pull-up off, and 1 to enable
+  the specified pull-up. Any other values are currently undefined.
+
+
+Getting the state of a PIN
+--------------------------
+
+  The state of a pin can be read by using the function:
+
+    unsigned int s3c2410_gpio_getpin(unsigned int pin);
+
+  This will return either zero or non-zero. Do not count on this
+  function returning 1 if the pin is set.
+
+
+Setting the state of a PIN
+--------------------------
+
+  The value an pin is outputing can be modified by using the following:
+
+    void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
+
+  Which sets the given pin to the value. Use 0 to write 0, and 1 to
+  set the output to 1.
+
+
+Getting the IRQ number associated with a PIN
+--------------------------------------------
+
+  The following function can map the given pin number to an IRQ
+  number to pass to the IRQ system.
+
+   int s3c2410_gpio_getirq(unsigned int pin);
+
+  Note, not all pins have an IRQ.
+
+
+Authour
+-------
+
+
+Ben Dooks, 03 October 2004
+(c) 2004 Ben Dooks, Simtec Electronics
diff --git a/Documentation/arm/Samsung-S3C24XX/H1940.txt b/Documentation/arm/Samsung-S3C24XX/H1940.txt
new file mode 100644
index 00000000000..d6b1de92b11
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/H1940.txt
@@ -0,0 +1,40 @@
+		HP IPAQ H1940
+		=============
+
+http://www.handhelds.org/projects/h1940.html
+
+Introduction
+------------
+
+  The HP H1940 is a S3C2410 based handheld device, with
+  bluetooth connectivity.
+
+
+Support
+-------
+
+  A variety of information is available
+
+  handhelds.org project page:
+
+    http://www.handhelds.org/projects/h1940.html
+
+  handhelds.org wiki page:
+
+    http://handhelds.org/moin/moin.cgi/HpIpaqH1940
+
+  Herbert P�tzl pages:
+
+    http://vserver.13thfloor.at/H1940/
+
+
+Maintainers
+-----------
+
+  This project is being maintained and developed by a variety
+  of people, including Ben Dooks, Arnaud Patard, and Herbert P�tzl.
+
+  Thanks to the many others who have also provided support.
+
+
+(c) 2005 Ben Dooks
+\ No newline at end of file
diff --git a/Documentation/arm/Samsung-S3C24XX/Overview.txt b/Documentation/arm/Samsung-S3C24XX/Overview.txt
new file mode 100644
index 00000000000..3af4d29a893
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/Overview.txt
@@ -0,0 +1,156 @@
+			S3C24XX ARM Linux Overview
+			==========================
+
+
+
+Introduction
+------------
+
+  The Samsung S3C24XX range of ARM9 System-on-Chip CPUs are supported
+  by the 's3c2410' architecture of ARM Linux. Currently the S3C2410 and
+  the S3C2440 are supported CPUs.
+
+
+Configuration
+-------------
+
+  A generic S3C2410 configuration is provided, and can be used as the
+  default by `make s3c2410_defconfig`. This configuration has support
+  for all the machines, and the commonly used features on them.
+
+  Certain machines may have their own default configurations as well,
+  please check the machine specific documentation.
+
+
+Machines
+--------
+
+  The currently supported machines are as follows:
+
+  Simtec Electronics EB2410ITX (BAST)
+
+    A general purpose development board, see EB2410ITX.txt for further
+    details
+
+  Samsung SMDK2410
+
+    Samsung's own development board, geared for PDA work.
+
+  Samsung/Meritech SMDK2440
+
+    The S3C2440 compatible version of the SMDK2440
+
+  Thorcom VR1000
+
+    Custom embedded board
+
+  HP IPAQ 1940
+
+    Handheld (IPAQ), available in several varieties
+
+  HP iPAQ rx3715
+
+    S3C2440 based IPAQ, with a number of variations depending on
+    features shipped.
+
+  Acer N30
+
+    A S3C2410 based PDA from Acer.  There is a Wiki page at
+    http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
+
+
+Adding New Machines
+-------------------
+
+  The archicture has been designed to support as many machines as can
+  be configured for it in one kernel build, and any future additions
+  should keep this in mind before altering items outside of their own
+  machine files.
+
+  Machine definitions should be kept in linux/arch/arm/mach-s3c2410,
+  and there are a number of examples that can be looked at.
+
+  Read the kernel patch submission policies as well as the
+  Documentation/arm directory before submitting patches. The
+  ARM kernel series is managed by Russell King, and has a patch system
+  located at http://www.arm.linux.org.uk/developer/patches/
+  as well as mailing lists that can be found from the same site.
+
+  As a courtesy, please notify <ben-linux@fluff.org> of any new
+  machines or other modifications.
+
+  Any large scale modifications, or new drivers should be discussed
+  on the ARM kernel mailing list (linux-arm-kernel) before being
+  attempted.
+
+
+NAND
+----
+
+  The current kernels now have support for the s3c2410 NAND
+  controller. If there are any problems the latest linux-mtd
+  CVS can be found from http://www.linux-mtd.infradead.org/
+
+
+Serial
+------
+
+  The s3c2410 serial driver provides support for the internal
+  serial ports. These devices appear as /dev/ttySAC0 through 3.
+
+  To create device nodes for these, use the following commands
+
+    mknod ttySAC0 c 204 64
+    mknod ttySAC1 c 204 65
+    mknod ttySAC2 c 204 66
+
+
+GPIO
+----
+
+  The core contains support for manipulating the GPIO, see the
+  documentation in GPIO.txt in the same directory as this file.
+
+
+Clock Management
+----------------
+
+  The core provides the interface defined in the header file
+  include/asm-arm/hardware/clock.h, to allow control over the
+  various clock units
+
+
+Port Contributors
+-----------------
+
+  Ben Dooks (BJD)
+  Vincent Sanders
+  Herbert Potzl
+  Arnaud Patard (RTP)
+  Roc Wu
+  Klaus Fetscher
+  Dimitry Andric
+  Shannon Holland
+  Guillaume Gourat (NexVision)
+  Christer Weinigel (wingel) (Acer N30)
+  Lucas Correia Villa Real (S3C2400 port)
+
+
+Document Changes
+----------------
+
+  05 Sep 2004 - BJD - Added Document Changes section
+  05 Sep 2004 - BJD - Added Klaus Fetscher to list of contributors
+  25 Oct 2004 - BJD - Added Dimitry Andric to list of contributors
+  25 Oct 2004 - BJD - Updated the MTD from the 2.6.9 merge
+  21 Jan 2005 - BJD - Added rx3715, added Shannon to contributors
+  10 Feb 2005 - BJD - Added Guillaume Gourat to contributors
+  02 Mar 2005 - BJD - Added SMDK2440 to list of machines
+  06 Mar 2005 - BJD - Added Christer Weinigel
+  08 Mar 2005 - BJD - Added LCVR to list of people, updated introduction
+  08 Mar 2005 - BJD - Added section on adding machines
+
+Document Author
+---------------
+
+Ben Dooks, (c) 2004-2005 Simtec Electronics
diff --git a/Documentation/arm/Samsung-S3C24XX/SMDK2440.txt b/Documentation/arm/Samsung-S3C24XX/SMDK2440.txt
new file mode 100644
index 00000000000..32e1eae6a25
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/SMDK2440.txt
@@ -0,0 +1,56 @@
+		Samsung/Meritech SMDK2440
+		=========================
+
+Introduction
+------------
+
+  The SMDK2440 is a two part evaluation board for the Samsung S3C2440
+  processor. It includes support for LCD, SmartMedia, Audio, SD and
+  10MBit Ethernet, and expansion headers for various signals, including
+  the camera and unused GPIO.
+
+
+Configuration
+-------------
+
+  To set the default configuration, use `make smdk2440_defconfig` which
+  will configure the common features of this board, or use
+  `make s3c2410_config` to include support for all s3c2410/s3c2440 machines
+
+
+Support
+-------
+
+  Ben Dooks' SMDK2440 site at http://www.fluff.org/ben/smdk2440/ which
+  includes linux based USB download tools.
+
+  Some of the h1940 patches that can be found from the H1940 project
+  site at http://www.handhelds.org/projects/h1940.html can also be
+  applied to this board.
+
+
+Peripherals
+-----------
+
+  There is no current support for any of the extra peripherals on the
+  base-board itself.
+
+
+MTD
+---
+
+  The NAND flash should be supported by the in kernel MTD NAND support,
+  NOR flash will be added later.
+
+
+Maintainers
+-----------
+
+  This board is being maintained by Ben Dooks, for more info, see
+  http://www.fluff.org/ben/smdk2440/
+
+  Many thanks to Dimitry Andric of TomTom for the loan of the SMDK2440,
+  and to Simtec Electronics for allowing me time to work on this.
+
+
+(c) 2004 Ben Dooks
+\ No newline at end of file
diff --git a/Documentation/arm/Samsung-S3C24XX/Suspend.txt b/Documentation/arm/Samsung-S3C24XX/Suspend.txt
new file mode 100644
index 00000000000..e12bc3284a2
--- /dev/null
+++ b/Documentation/arm/Samsung-S3C24XX/Suspend.txt
@@ -0,0 +1,106 @@
+			S3C24XX Suspend Support
+			=======================
+
+
+Introduction
+------------
+
+  The S3C2410 supports a low-power suspend mode, where the SDRAM is kept
+  in Self-Refresh mode, and all but the essential peripheral blocks are
+  powered down. For more information on how this works, please look
+  at the S3C2410 datasheets from Samsung.
+
+
+Requirements
+------------
+
+  1) A bootloader that can support the necessary resume operation
+
+  2) Support for at least 1 source for resume
+
+  3) CONFIG_PM enabled in the kernel
+
+  4) Any peripherals that are going to be powered down at the same
+     time require suspend/resume support.
+
+
+Resuming
+--------
+
+  The S3C2410 user manual defines the process of sending the CPU to
+  sleep and how it resumes. The default behaviour of the Linux code
+  is to set the GSTATUS3 register to the physical address of the
+  code to resume Linux operation.
+
+  GSTATUS4 is currently left alone by the sleep code, and is free to
+  use for any other purposes (for example, the EB2410ITX uses this to
+  save memory configuration in).
+
+
+Machine Support
+---------------
+
+  The machine specific functions must call the s3c2410_pm_init() function
+  to say that its bootloader is capable of resuming. This can be as
+  simple as adding the following to the machine's definition:
+
+  INITMACHINE(s3c2410_pm_init)
+
+  A board can do its own setup before calling s3c2410_pm_init, if it
+  needs to setup anything else for power management support.
+
+  There is currently no support for over-riding the default method of
+  saving the resume address, if your board requires it, then contact
+  the maintainer and discuss what is required.
+
+  Note, the original method of adding an late_initcall() is wrong,
+  and will end up initialising all compiled machines' pm init!
+
+
+Debugging
+---------
+
+  There are several important things to remember when using PM suspend:
+
+  1) The uart drivers will disable the clocks to the UART blocks when
+     suspending, which means that use of printascii() or similar direct
+     access to the UARTs will cause the debug to stop.
+
+  2) Whilst the pm code itself will attempt to re-enable the UART clocks,
+     care should be taken that any external clock sources that the UARTs
+     rely on are still enabled at that point.
+
+
+Configuration
+-------------
+
+  The S3C2410 specific configuration in `System Type` defines various
+  aspects of how the S3C2410 suspend and resume support is configured
+
+  `S3C2410 PM Suspend debug`
+
+    This option prints messages to the serial console before and after
+    the actual suspend, giving detailed information on what is
+    happening
+
+
+  `S3C2410 PM Suspend Memory CRC`
+
+    Allows the entire memory to be checksummed before and after the
+    suspend to see if there has been any corruption of the contents.
+
+    This support requires the CRC32 function to be enabled.
+
+
+  `S3C2410 PM Suspend CRC Chunksize (KiB)`
+
+    Defines the size of memory each CRC chunk covers. A smaller value
+    will mean that the CRC data block will take more memory, but will
+    identify any faults with better precision
+
+
+Document Author
+---------------
+
+Ben Dooks, (c) 2004 Simtec Electronics
+