Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Patch from Ben Dooks

Remove warning of casting `const char *` to a `char *` type.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Small mod to shut off the xmit interrupt if we have nothing to transmit.
Signed-off-by: NPatrick Gefre <pfg@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The Mobility 16550A serial ports don't behave the same as standard
16550A ports, and need a helping hand to get them going once the
transmitter has drained and been disabled.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

For some 8250 port types, we used to check the type of the port, and
then determine whether the chip revision means the device is buggy.
Instead, introduce a bit array, and set the appropriate bit(s) when
we discover a buggy device.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Several hardware features of SGI's IOC4 I/O controller chip require
timing-related driver calculations dependent upon the PCI bus speed.  This
patch enables the core IOC4 driver code to detect the actual bus speed and
store a value that can later be used by the IOC4 subdrivers as needed.
Signed-off-by: NBrent Casavant <bcasavan@sgi.com>
Acked-by: NPat Gefre <pfg@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The SGI IOC4 I/O controller chip drivers are currently all configured by
CONFIG_BLK_DEV_SGIIOC4.  This is undesirable as not all IOC4 hardware features
are needed by all systems.

This patch adds two configuration variables, CONFIG_SGI_IOC4 for core IOC4
driver support (see patch 1/3 in this series for further explanation) and
CONFIG_SERIAL_SGI_IOC4 to independently enable serial port support.
Signed-off-by: NBrent Casavant <bcasavan@sgi.com>
Acked-by: NPat Gefre <pfg@sgi.com>
Acked-by: NJeremy Higdon <jeremy@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This series of patches reworks the configuration and internal structure
of the SGI IOC4 I/O controller device drivers.

These changes are motivated by several factors:

- The IOC4 chip PCI resources are of mixed use between functions (i.e.
  multiple functions are handled in the same address range, sometimes
  within the same register), muddling resource ownership and initialization
  issues.  Centralizing this ownership in a core driver is desirable.

- The IOC4 chip implements multiple functions (serial, IDE, others not
  yet implemented in the mainline kernel) but is not a multifunction
  PCI device.  In order to properly handle device addition and removal
  as well as module insertion and deletion, an intermediary IOC4-specific
  driver layer is needed to handle these operations cleanly.

- All IOC4 drivers are currently enabled by a single CONFIG value.  As
  not all systems need all IOC4 functions, it is desireable to enable
  these drivers independently.

- The current IOC4 core driver will trigger loading of all function-level
  drivers, as it makes direct calls to them.  This situation should be
  reversed (i.e. function-level drivers cause loading of core driver)
  in order to maintain a clear and least-surprise driver loading model.

- IOC4 hardware design necessitates some driver-level dependency on
  the PCI bus clock speed.  Current code assumes a 66MHz bus, but the
  speed should be autodetected and appropriate compensation taken.

This patch series effects the above changes by a newly and better designed
IOC4 core driver with which the function-level drivers can register and
deregister themselves upon module insertion/removal.  By tracking these
modules, device addition/removal is also handled properly.  PCI resource
management and ownership issues are centralized in this core driver, and
IOC4-wide configuration actions such as bus speed detection are also
handled in this core driver.

This patch:

The SGI IOC4 I/O controller chip implements multiple functions, though it is
not a multi-function PCI device.  Additionally, various PCI resources of the
IOC4 are shared by multiple hardware functions, and thus resource ownership by
driver is not clearly delineated.  Due to the current driver design, all core
and subordinate drivers must be loaded, or none, which is undesirable if not
all IOC4 hardware features are being used.

This patch reorganizes the IOC4 drivers so that the core driver provides a
subdriver registration service.  Through appropriate callbacks the subdrivers
can now handle device addition and removal, as well as module insertion and
deletion (though the IOC4 IDE driver requires further work before module
deletion will work).  The core driver now takes care of allocating PCI
resources and data which must be shared between subdrivers, to clearly
delineate module ownership of these items.
Signed-off-by: NBrent Casavant <bcasavan@sgi.com>
Acked-by: Pat Gefre <pfg@sgi.com
Acked-by: NJeremy Higdon <jeremy@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch allows iSeries to build with CONFIG_PCI=n.  This is useful for
partitions that have only virtual I/O.
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Adds SCC2 pin routing specific to the GP3 board.
Signed-off-by: NMatt Porter <mporter@kernel.crashing.org>
Signed-off-by: NKumar Gala <kumar.gala@freescale.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

- Changed the return value of unknown type to NULL.

- Deleted the NULL check of dev_id in siu_interrupt().

- Deleted the NULL check of port->membase in siu_shutdown().

- Added the NULL check of port->membase to siu_startup().

- Removed early_uart_ops. Now using vr41xx_siu standerd one.

- Changed KSEG1ADDR() in siu_console_setup() to ioremap().

- When uart_add_one_port() failed, changed to set NULL to port->dev.
Signed-off-by: NYoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

with high-speed mode enabled, we switch it to high-speed mode so that
baud_base becomes 921600. However, we also need to multiply the baud
divisor by 8 at the same time, in case it's already in use as a console.

Signed-off-by: David Woodhouse
Acked-by: Tom Rini
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

serial_cs's vendor/device identification got broken by Yum Rayan's change
'[PATCH] serial_cs: Reduce stack usage in serial_event()' - it changed buf
type from u_short* to char*, breaking device manufacturer & card number
retrieval.  Due to this my modem stopped from being recognized as special
case.

Code will work much better if we'll rely on first_tuple's parser instead of
doing parse ourselves.  Code also looks simpler after change.
Signed-off-by: NPetr Vandrovec <vandrove@vc.cvut.cz>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The chip can emit garbage characters if we touch the
settings while characters are going out.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add uart_insert_char(), which handles inserting characters into the
flip buffer.  This helper function handles the correct semantics
for handling overrun in addition to inserting normal characters.
Signed-off-by: NRussell King <rmk@arm.linux.org.uk>

Signed-off-by: NRussell King <rmk@arm.linux.org.uk>

Another large rollup of various patches from Adrian which make things static
where they were needlessly exported.
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Arm the read timeout timer before the first read.
Signed-off-by: NPatrick Gefre <pfg@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Small mods for setting up the uart - parity, flow control
Signed-off-by: NPatrick Gefre <pfg@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Set the timeout and threshold to better values.
Signed-off-by: NPatrick Gefre <pfg@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Allow hardware flow control to be set from an ioctl.
Signed-off-by: NPatrick Gefre <pfg@sgi.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch reduces the stack usage of the function serial_event() in
serial_cs from 2212 to 228.  I used a patched version of gcc 3.4.3 on i386
with -fno-unit-at-a-time disabled.

This patch is only compile tested.
Acked-by: NRandy Dunlap <rddunlap@osdl.org>
Signed-off-by: NYum Rayan <yum.rayan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NAndreas Schwab <schwab@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Patch from Sascha Hauer

This patch adds UCFR_RFDIV setting into i.MX serial driver.
This is required, if loader does not fully agree with Linux kernel
about UART setup manner. Linux only blindly expected some values until
now. This should enable to use even serial ports not recognized by
boot-loader as for example third UART found in the bluethoot module.
Patch also enables to detect original setup baudrate in more cases.

Signed-off-by: Pavel Pisa
Signed-off-by: Sascha Hauer
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Convert 8250_hp300 to use serial8250_register_port() and
serial8250_unregister_port().

Tested by Kars de Jong, 4/4/2005.
Signed-off-by: NRussell King <rmk@arm.linux.org.uk>

With unlikely() there's no need for the error path to
use gotos.
Signed-off-by: NRussell King <rmk@arm.linux.org.uk>

Ensure ARM serial driver error paths are marked with the
unlikely() compiler hint.
Signed-off-by: NRussell King <rmk@arm.linux.org.uk>

Usual iomem annotations + NULL noise removal.
Signed-off-by: NAl Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This breaks serial consoles badly.  Thanks to Eric Brower
for tracking down the problem.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We were forgetting to call sunsu_change_speed().  The reason
that replugging in the mouse cable "fixes things" is that
causes a BREAK interrupt which in turn caused a call to
sunsu_change_speed() which would get the chip setup properly.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix the formatting of some comments in 8250.c, and add a note that the
register_serial / unregister_serial shouldn't be used in new code.

We do this here in preference to adding to linux/serial.h, since that is used
by a number of non-8250 drivers which pretend to be 8250.  It is not known
whether it would be appropriate to do so.
Signed-off-by: NRussell King <rmk@arm.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

 - plug various leaks and use after frees in the remove and
   initialization failure path (some still left)
 - remove useless global list of boards and use pci_set_drvdata instead
 - unobsfucate init path by merging functions together
 - kill various totally useless state variables
 - .. probably more I forgot

Note that the tty part still generates lots of sparse warnings and there's
still a totally useless layer of function pointer indirections, but maybe
someone else will fix that bit up.
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

-rc2-mm1 still contains few places where u32 and pm_message_t.  This fixes
drivers/serial [should change no code].
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!