Commit Graph

54 Commits

Author SHA1 Message Date
Russell King cdea460643 [ARM] Fix some section mismatch warnings
The following patch fixes these section mismatch warnings:

WARNING: arch/arm/mach-at91/built-in.o(.text+0xdf4): Section mismatch: reference to .init.data:dk_nand_partition (between 'nand_partitions' and 'at91_leds_event')
WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (after 'nand_partitions')
WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (between 'nand_partitions' and 'ads7843_pendown_state')
WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (after 'nand_partitions')
WARNING: arch/arm/mach-at91/built-in.o(.text+0xc28): Section mismatch: reference to .init.data:kb9202_nand_partition (after 'nand_partitions')
WARNING: arch/arm/mach-footbridge/built-in.o(.text+0xaa4): Section mismatch: reference to .init.data:cats_pci (between 'cats_pci_init' and 'ebsa285_leds_event')WARNING: arch/arm/mach-ixp2000/built-in.o(.text+0xb54): Section mismatch: reference to .init.text:ixp2000_init_irq (between 'ixdp2x00_init_irq' and 'ixdp2x00_irq_handler')
WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x670): Section mismatch: reference to .init.text:ixp23xx_pci_common_init (between 'ixp23xx_pci_slave_init' and 'ixp23xx_pci_scan_bus')
WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x890): Section mismatch: reference to .init.text:ixp23xx_init_irq (between 'ixdp2351_init_irq' and 'roadrunner_pci_preinit')
WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x9a8): Section mismatch: reference to .init.text:ixp23xx_pci_preinit (after 'roadrunner_pci_preinit')
WARNING: arch/arm/mach-imx/built-in.o(__ksymtab+0x80): Section mismatch: reference to .init.text:imx_set_mmc_info (between '__ksymtab_imx_set_mmc_info' and '__ksymtab_set_imx_fb_info')
WARNING: arch/arm/mach-imx/built-in.o(__ksymtab+0x88): Section mismatch: reference to .init.text:set_imx_fb_info (after '__ksymtab_set_imx_fb_info')
WARNING: arch/arm/mach-sa1100/built-in.o(.text+0x1930): Section mismatch: reference to .init.data:neponset_port_fns (between 'neponset_probe' and 'assabet_leds_event')
WARNING: drivers/built-in.o(.text+0x3f100): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted')
WARNING: drivers/built-in.o(.text+0x3f1c8): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted')
WARNING: drivers/built-in.o(.text+0x4f988): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted')
WARNING: drivers/built-in.o(.text+0x4fa50): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted')

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-30 17:48:45 +01:00
Simon Arlott 6cbdc8c535 [ARM] spelling fixes
Spelling fixes in arch/arm/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-20 20:10:32 +01:00
Bernhard Walle b30fabadae Add IRQF_IRQPOLL flag on arm
Add IRQF_IRQPOLL for each timer interrupt.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:22 -07:00
Russell King 0af92befeb [ARM] mm 9: add additional device memory types
Add cached device type for ioremap_cached().  Group all device memory
types together, and ensure that they all have a "MT_DEVICE" prefix.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-05 20:28:16 +01:00
Lennert Buytenhek 2024c39dbb [ARM] 3965/1: ixp2000: fix handling of pci master aborts
The master abort check in ixp2000_pci_read_config() recently started
failing due to the compiler optimising out the read access following
the clearing of pci_master_aborts.  Mark pci_master_aborts volatile to
force the compiler to reload it on every use.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-01 16:55:22 +00:00
Russell King 10dd5ce28d [ARM] Remove compatibility layer for ARM irqs
set_irq_chipdata -> set_irq_chip_data
get_irq_chipdata -> get_irq_chip_data
do_level_IRQ -> handle_level_irq
do_edge_IRQ -> handle_edge_irq
do_simple_IRQ -> handle_simple_irq
irqdesc -> irq_desc
irqchip -> irq_chip

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30 12:24:47 +00:00
Russell King cf610ca226 [ARM] Fix breakage in 7281c248f7
A couple of missing semicolons.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-10-24 19:21:17 +01:00
Alan Cox 7281c248f7 [ARM] switch to new pci_get_bus_and_slot API
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-10-17 17:19:59 +01:00
Linus Torvalds 0cd61b68c3 Initial blind fixup for arm for irq changes
Untested, but this should fix up the bulk of the totally mechanical
issues, and should make the actual detail fixing easier.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06 10:59:54 -07:00
Thomas Gleixner 52e405eaa9 [PATCH] ARM: fixup irqflags breakage after ARM genirq merge
The irgflags consolidation did conflict with the ARM to generic IRQ
conversion and was not applied for ARM. Fix it up.

Use the new IRQF_ constants and remove the SA_INTERRUPT define

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 17:29:22 -07:00
Thomas Gleixner 64ffae8a32 [ARM] 3681/1: ARM: Convert ixp2000 to generic irq handling
Patch from Thomas Gleixner

From: Thomas Gleixner <tglx@linutronix.de>

Fixup the conversion to generic irq subsystem.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-01 22:32:18 +01:00
Jörn Engel 6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Lennert Buytenhek fc8ea7a1ea [ARM] 3644/1: ixp2000: export gpio_line_config()
Patch from Lennert Buytenhek

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-24 10:34:29 +01:00
Lennert Buytenhek f869afab8f [ARM] 3616/1: fix timer handler wrap logic for a number of platforms
Patch from Lennert Buytenhek

A couple of platforms aren't using the right comparison type in their
timer interrupt handlers (as we're comparing two wrapping timestamps,
we need a bmi/bpl-type comparison, not an unsigned comparison) -- this
patch fixes them up.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-22 10:30:53 +01:00
Lennert Buytenhek 104c7b03ea [ARM] 3383/3: ixp2000: ixdp2x01 platform serial conversion
Patch from Lennert Buytenhek

Add a PLAT8250_DEV_PLATFORM2, and convert the two ixdp2x01 CPLD serial
ports to use platform serial devices with ids PLAT8250_DEV_PLATFORM[12].
(The on-chip xscale UART is PLAT8250_DEV_PLATFORM, id #0.)

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 23:03:13 +00:00
Lennert Buytenhek bd115ea007 [ARM] 3378/1: ixp2000: fix gpio interrupt handling
Patch from Lennert Buytenhek

ixp2000 used to initially mark GPIO interrupts as invalid, and not
mark them valid until set_irq_type() was called, but this doesn't
work if you want to use request_irq() with the SA_TRIGGER_* flags.

So, just mark the GPIO interrupts valid from the beginning.  We
configure GPIOs as inputs when set_irq_type() is called anyway, so
this shouldn't be a problem.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-22 20:14:09 +00:00
Lennert Buytenhek 18ec5c7312 [ARM] 3373/1: move uengine loader to arch/arm/common
Patch from Lennert Buytenhek

Move the uengine loader from arch/arm/mach-ixp2000 to arch/arm/common
so that ixp23xx can use it too.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 22:06:16 +00:00
Deepak Saxena 0328ad23cf [ARM] 3334/1: Add support for IXDP28x5 platforms
Patch from Deepak Saxena

This patch adds support for Intel's IXDP28x5 platform. This
is just and IXDP2801 with a new CPU rev but the bootloader
has been updated to reflect a new machine ID so we just build
support for it by default when we build IXDP2801.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 22:06:06 +00:00
Lennert Buytenhek f8e5b28413 [ARM] 3302/1: make pci=firmware the default for ixp2000
Patch from Lennert Buytenhek

Most ixp2000 boards don't actually work if pci=firmware isn't used, so
the defconfig isn't really the right place to specify this.  Instead of
specifying it in the defconfigs, make the relevant board code take care
of setting pci=firmware.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-08 21:09:04 +00:00
Lennert Buytenhek 1b39401304 [ARM] 3300/1: make ixdp2x01 co-exist with other ixp2000 machine types
Patch from Lennert Buytenhek

The ixdp2x01 pci init call doesn't check whether it's really running
on an ixdp2x01, making it impossible to compile one kernel that works
on both the ixdp2x01 and another ixp2000 board.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-08 21:09:02 +00:00
Nicolas Pitre 946d4935fc [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2)
Patch from Nicolas Pitre

This field is redundent since it must be equal to PHYS_OFFSET anyway.

Now that no code uses it anymore, mark it deprecated and remove all
initializations from the tree.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-13 20:51:52 +00:00
Lennert Buytenhek dd29c72771 [ARM] 3257/1: ixp2000: map in scratch and sram
Patch from Lennert Buytenhek

For the ixp2000 netdev driver, we need to map in a chunk of SRAM (to
store the transmit and receive descriptors) and the scratch get/put
area (so that we can use the scratchpad rings in the cpu for managing
the descriptors.)  These are the final two mappings needed for the
netdev driver and the last missing piece for the driver in mainline
to work.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-13 20:51:43 +00:00
Lennert Buytenhek 5391473f7b [ARM] 3121/1: unconditionally use XCB=101 on ixp2000
Patch from Lennert Buytenhek

Since we have to use XCB=101 instead of XCB=000 on the ixp2400 to
prevent it from regularly falling over, and since we have to deal with
manual write buffer flushing because of that, we might as well use
XCB=101 on all ixp2000 platforms since it's faster than XCB=000.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-07 21:12:09 +00:00
Lennert Buytenhek 7240f1f183 [ARM] 3114/1: use ixp2000_reg_wrb in ixp2000 uengine loader
Patch from Lennert Buytenhek

Make the uengine loader use ixp2000_reg_wrb in the right places.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-06 14:34:13 +00:00
Dave Jiang 7866f64928 [ARM] 3086/1: ixp2xxx error irq handling
Patch from Dave Jiang

This provides support for IXP2xxx error interrupt handling. Previously there was a patch to remove this (although the original stuff was broken). Well, now the error bits are needed again. These are used extensively by the micro-engine drivers according to Deepak and also we will need it for the new EDAC code that Alan Cox is trying to push into the main kernel.

Re-submit of 3072/1, generated against git tree pulled today. AFAICT, this git tree pulled in all the ARM changes that's in arm.diff. Please let me know if there are additional changes. Thx!

Signed-off-by: Dave Jiang <djiang@mvista.com>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-04 17:15:44 +00:00
Russell King ca82d85bc2 [ARM] Fix more 3016/1 breakage
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-03 10:06:35 +00:00
Linus Torvalds 7f36b1e958 Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-11-01 21:32:14 -08:00
Lennert Buytenhek d01e8897fc [ARM] 3052/1: add ixp2000 microcode loader
Patch from Lennert Buytenhek

This patch adds a microcode loader for the ixp2000 architecture.

The ixp2000 is an xscale-based CPU with a number of additional small
CPUs ('microengines') on die that can be programmed to do various
things.  Depending on the ixp2000 model, there are between 2 and 16
microengines.

This code provides an API that allows configuring the microengines,
loading code into them, and starting and stopping them and reading
out a number of status registers, and is used by the microengine
network driver that was recently announced to netdev.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-01 19:53:50 +00:00
Lennert Buytenhek fa87cedd4e [ARM] 3065/1: ixp2000 typo and whitespace fixes
Patch from Lennert Buytenhek

Misc ixp2000 typo and whitespace fixes.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-01 19:44:27 +00:00
Lennert Buytenhek e9b72e43d9 [ARM] 3064/1: start using ixp2000_reg_wrb
Patch from Lennert Buytenhek

Switch the users of ixp2000_reg_write that depend on writes being
flushed out of the write buffer by the time that function returns
over to ixp2000_reg_wrb.

When using XCB=101, writes to the same functional unit are still
guaranteed to complete in order, so we only need to protect against:
- reordering of writes to different functional units
- masking an interrupt and then reenabling the IRQ bit in CPSR

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-01 19:44:26 +00:00
Lennert Buytenhek a6f1063b38 [ARM] 3062/1: map in various enp2611 peripherals for the ixp2000 netdev driver
Patch from Lennert Buytenhek

The enp2611 version of the ixp2000 netdev driver needs to be able to
access a number of on-board peripherals.  ioremap() is not suitable
for this, as that will cause XCB=000 mappings to be done, which will
make the cpu susceptible to crashing on ixp2400 erratum #66.  Properly
aligned iotable mappings with MT_IXP2000_DEVICE will cause section
mappings with XCB=101 to be done, which is safe.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-01 19:44:24 +00:00
Russell King d052d1beff Create platform_device.h to contain all the platform device details.
Convert everyone who uses platform_bus_type to include
linux/platform_device.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-29 19:07:23 +01:00
Deepak Saxena db0d087e34 [ARM] 2984/1: Replace map_desc.physical with map_desc.pfn: IXP2000
Patch from Deepak Saxena

IXP2000 map_desc.pfn conversion

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28 15:18:58 +01:00
Deepak Saxena 702c96d550 [PATCH] ARM: Fix IXP2000 serial port resource range. For real this time.
Serial port only needs 32 bytes of resource space but we are currently
asking for 64K.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
[ diff went missing first time due to corrupted patch ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-30 23:04:20 -07:00
Russell King fc611a1a50 [ARM] Don't include mach-types.h unnecessarily
It's pointless to include mach-types.h if you're not going to use
anything from it.  These references were removed as a result of:

grep -lr 'asm/mach-types\.h' . | xargs grep -L 'machine_is_\|MACH_TYPE_\|MACHINE_START\|machine_type'

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-29 11:15:51 +01:00
Russell King 6df29debb7 [SERIAL] Use an enum for serial8250 platform device IDs
Rather than hard-coding the platform device IDs, enumerate them.
We don't particularly care about the actual ID we get, just as
long as they're unique.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-08 16:04:41 +01:00
Russell King 2be863c959 [ARM] Fix missed initialisers/missing comma
Fix the broken initialisers missed by the recent IRQ patch.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-06 23:13:17 +01:00
Russell King 664399e1fb [ARM] Wrap calls to descriptor handlers
This is part of Thomas Gleixner's generic IRQ patch, which converts
ARM to use the generic IRQ subsystem.  Here, we wrap calls to
desc->handler() in an inline function, desc_handle_irq().  This
reduces the size of Thomas' patch since the changes become more
localised.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-04 19:45:00 +01:00
Russell King 7801907b8c [ARM] Change irq_chip wake/type methods to set_wake/set_type
This is part of Thomas Gleixner's generic IRQ patch, which converts
ARM to use the generic IRQ subsystem.  Here, we rename two of the
irq_chip methods - wake becomes set_wake, and type becomes set_type.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-04 19:43:13 +01:00
Lennert Buytenhek 28187f2ce3 [PATCH] ARM: 2793/1: platform serial support for ixp2000
Patch from Lennert Buytenhek

This patch converts the ixp2000 serial port over to a platform
serial device.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-10 19:44:53 +01:00
Russell King e9dea0c65d [PATCH] ARM: Remove machine description macros
Remove the pointless machine description macros, favouring C99
initialisers instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-03 17:38:58 +01:00
Lennert Buytenhek 26799e675e [PATCH] ARM: 2757/1: remove ixdp2400_init_irq from ixdp2800 code
Patch from Lennert Buytenhek

Compiling one kernel that supports both ixdp2400 and ixdp2800 gives
an error, as a copy of the ixdp2400 irq init routing accidentally
ended up in ixdp2800.c somehow.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-26 22:24:19 +01:00
Lennert Buytenhek baaf7ed179 [PATCH] ARM: 2756/1: add ixp2000 msf mapping
Patch from Lennert Buytenhek

Add a mapping for the ixp2400 and ixp2800 msf unit.  The msf is the
ixp2000's 'media and switch fabric' unit, which handles the networking
part of the chip.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-26 22:24:17 +01:00
Russell King 09b8b5f843 [PATCH] ARM: Add SA_TIMER flag to timer interrupts
VST needs to know which timer handler is for the timer interrupt.
Mark all timer interrupts with the SA_TIMER flag.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-26 17:06:36 +01:00
Lennert Buytenhek 321ab6a5fa [PATCH] ARM: 2752/1: disable ixp2000 PCI I/O software workaround on chips that don't need it
Patch from Lennert Buytenhek

The later ixp2000 models don't need the PCI I/O workaround that we
currently perform.  Add a config option to disable the workaround,
and panic on boot if a kernel without the workaround is booted on a
buggy chip.  As only pre-production ixp2000s need the workaround,
the default is for it not to be configured in.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-25 19:30:04 +01:00
Lennert Buytenhek 8144f56bd1 [PATCH] ARM: 2751/1: ixp2000 gpio cleanup broke ixdp2800 build
Patch from Lennert Buytenhek

The ixp2000 gpio cleanup broke the ixdp2800 build as it moved some
gpio-related functions from arch/platform.h to arch/gpio.h and the
ixdp2x00 support code used those functions but didn't include the
latter header file.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-25 16:58:22 +01:00
Lennert Buytenhek ea23d1ac7e [PATCH] ARM: 2750/1: add i2c platform device for enp2611 on-board i2c bus
Patch from Lennert Buytenhek

On the enp2611, GPIO 7 and 6 are connected to an on-board i2c bus that
attaches to the SODIMM module slot (for SPD) and an LM84 temperature
sensor.  Add a platform device for this i2c bus.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-25 16:58:21 +01:00
Lennert Buytenhek c4982887ca [PATCH] ARM: 2744/1: ixp2000 gpio irq support
Patch from Lennert Buytenhek

This patch cleans up the ixp2000 gpio irq code and implements the
set_irq_type method for gpio irqs so that users can select for which
events (falling edge/rising edge/level low/level high) on the gpio
pin they want the corresponding gpio irq to be triggered.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-24 20:54:35 +01:00
Lennert Buytenhek e4fe19819e [PATCH] ARM: 2701/1: free up ixp2000 timer 4 for the watchdog
Patch from Lennert Buytenhek

The IXP2000 has four timers, but if we're on an A-step IXP2800, timer
2 and 3 don't work.  We need two timers for timekeeping (one for the
timer interrupt and one for tracking missed jiffies), so on early
IXP2800s we have no other choice but to use timer 1 and 4 for that,
but on all other IXP2000s we'd rather leave timer 4 free since that's
the only timer we can use for the watchdog.
So, on buggy IXP2000s (i.e. the A-step IXP2800) we use timer 4 for
tracking missed jiffies, and on all all non-buggy IXP2000s (i.e.
everything but the A-step IXP2800) we use timer 2.
On a pre-production IXP2800, this patch should print these messages
on boot:
	Enabling IXP2800 erratum #25 workaround
	Unable to use IXP2000 watchdog due to IXP2800 erratum #25
On any non-buggy IXP2800 (as well as on IXP2400s) you shouldn't see
anything at all, and the watchdog should be usable again.

Signed-off-by: Lennert Buytenhek
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-20 18:51:07 +01:00
Lennert Buytenhek 53e173f62c [PATCH] ARM: 2660/2: fix ixdp2800 boot and pci init
Patch from Lennert Buytenhek

The IXDP2800 is an evalution platform for the IXP2800 processor that
has two IXP2800s connected to the same PCI bus.  This is problematic
as both CPUs will try to configure the PCI bus as they boot linux.
Contrary to on the other IXP2000 platforms, the boot loader on the
IXDP2800 doesn't configure the PCI bus properly, so we do want the
linux instance on one of the CPUs to do that.
Making one of the CPUs ignore the PCI bus (and thus act like a pure
PCI slave device) is not an option because there is a 82559 NIC on
the PCI bus for each of the CPUs.
The chosen solution is to have the master CPU configure the PCI bus
while the slave is kept in a quiescent state, and then to have the
slave CPU scan the PCI bus (without assigning resources) while the
master is kept in a quiescent state.  After this ritual, the master
deletes the slave NIC from its PCI device list, the slave deletes
the master NIC from its device list, and (almost) all is well.
There's still one little problem: each of the CPUs has a 1G SDRAM
BAR, but the IXP2000 only has 512M of outbound PCI memory window.
We solve this by hand-assigning the master and slave SDRAM BARs to
a location outside each of the IXP's outbound PCI windows, and by
having the rest of the BARs autoconfigured in the outbound PCI
windows, in the range [e0000000..ffffffff], so that there is a 1:1
pci:phys mapping between them.
Even with this patch, a number of issues still remain -- just imagine
what happens if one of the CPUs is rebooted, by watchdog or by hand,
but the other one isn't.  But those issues are not easily fixable
given the strange PCI layout of this board and the behavior of the
boot loader shipped with the platform.

Signed-off-by: Lennert Buytenhek
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-04-29 22:13:57 +01:00