Commit Graph

200 Commits

Author SHA1 Message Date
Maxime Bizon
3269bb63eb i2c-mv64xxx: Fix random oops at boot
I have a Marvell board which has the same i2c hw block than mv64xxx, so
I'm trying to use i2c-mv64xxx driver.

But I get the following random oops at boot:

Unable to handle kernel NULL pointer dereference at virtual address 00000002
Backtrace: 
[<c0397e4c>] (mv64xxx_i2c_intr+0x0/0x2b8) from [<c02879c4>] (__do_irq+0x4c/0x8c)
[<c0287978>] (__do_irq+0x0/0x8c) from [<c0287c0c>] (do_level_IRQ+0x68/0xc0)
 r8 = C0501E08  r7 = 00000005  r6 = C0501E08  r5 = 00000005
 r4 = C048BB78 
[<c0287ba4>] (do_level_IRQ+0x0/0xc0) from [<c02885f8>] (asm_do_IRQ+0x50/0x134)
 r6 = C0449C78  r5 = F1020000  r4 = FFFFFFFF 
[<c02885a8>] (asm_do_IRQ+0x0/0x134) from [<c02869c4>] (__irq_svc+0x24/0x100)
 r8 = C1CAC400  r7 = 00000005  r6 = 00000002  r5 = F1020000
 r4 = FFFFFFFF 
[<c0287efc>] (setup_irq+0x0/0x124) from [<c02880d0>] (request_irq+0xb0/0xd0)
 r7 = C041B2AC  r6 = C0397E4C  r5 = 00000000  r4 = 00000005
[<c0288020>] (request_irq+0x0/0xd0) from [<c03985f4>] (mv64xxx_i2c_probe+0x148/0x244)
[<c03984ac>] (mv64xxx_i2c_probe+0x0/0x244) from [<c038bedc>] (platform_drv_probe+0x20/0x24)


The oops is caused by a spurious interrupt that occurs when request_irq
is called. mv64xxx_i2c_fsm() tries to read drv_data->msg, which is NULL.

I noticed that hardware init is done after requesting irq. Thus any
pending irq from previous hardware usage may cause this.

The following patch fixes it:


Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-01-05 17:54:05 +01:00
Vitaly Wool
6c566fb7b3 i2c-pnx: Fix interrupt handler, get rid of EARLY config option
This fixes two issues raised by David Brownell on the i2c list:

<< Someone needs to update i2c-pnx.c to handle the IRQ handler doesn't
expect pt_regs (gone now for a while), and so it doesn't try to
reference "mudule_init()" if I2C isn't initialized "early".  For
that matter, to get rid of that _option_ to initialize then, and
always init that driver with subsystem_init() ... it's common with
embedded systems to need I2C access to tweak a GPIO expander or
do some other work when bringing up drivers, that's not specific
to USB stacks. >>

Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-01-04 13:07:03 +01:00
Linus Torvalds
bbc7610c06 Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  hwmon: Add MAINTAINERS entry for new ams driver
  hwmon: New AMS hardware monitoring driver
  hwmon/w83793: Add documentation and maintainer
  hwmon: New Winbond W83793 hardware monitoring driver
  hwmon: Update Rudolf Marek's e-mail address
  hwmon/f71805f: Fix the device address decoding
  hwmon/f71805f: Always create all fan inputs
  hwmon/f71805f: Add support for the Fintek F71872F/FG chip
  hwmon: New PC87427 hardware monitoring driver
  hwmon/it87: Remove the SMBus interface support
  hwmon/hdaps: Update the list of supported devices
  hwmon/hdaps: Move the DMI detection data to .data
  hwmon/pc87360: Autodetect the VRM version
  hwmon/f71805f: Document the fan control features
  hwmon/f71805f: Add support for "speed mode" fan speed control
  hwmon/f71805f: Support DC fan speed control mode
  hwmon/f71805f: Let the user adjust the PWM base frequency
  hwmon/f71805f: Add manual fan speed control
  hwmon/f71805f: Store the fan control registers
2006-12-13 09:13:19 -08:00
Jean Delvare
7188cc66b4 hwmon: Update Rudolf Marek's e-mail address
The Silicon Hill club is not what it used to be.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-12 18:18:30 +01:00
Jean Delvare
d7aef138f3 i2c: Fix OMAP clock prescaler to match the comment
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2006-12-10 21:21:34 +01:00
Jean Delvare
250d1bd3f4 i2c: Enable PEC on more i2c-i801 devices
Enable PEC on recent Intel SMBus controllers (ICH6, ICH7, ICH8, ICH9
and ESB2.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Jason Gaston <jason.d.gaston@intel.com>
2006-12-10 21:21:33 +01:00
Jean Delvare
3269711b76 i2c: Discard the i2c algo del_bus wrappers
They are all only calling i2c_del_adapter, so we may as well do
it directly.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:33 +01:00
Russell King
6b65cd7428 i2c: New ARM Versatile/Realview bus driver
Add support for the I2C bus found on the ARM Versatile and Realview
platforms.  The I2C bus has a RTC and optionally some EEPROMs attached.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:32 +01:00
Andrew Victor
813e30e9ab i2c: New Atmel AT91 bus driver
Add support for the I2C (Two-wire interface) controller integrated in
the Atmel AT91RM9200 processor.  This driver should also be usable on
the Atmel AT91SAM9261 and AT91SAM9260 processors.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:30 +01:00
Hans-Frieder Vogt
ad04d5c387 i2c: Cleanups to the i2c-nforce2 bus driver
Summary of changes:

- fixes:
   o legacy I/O region size is 64 bytes, not 8 bytes
- general cleanup:
   o removed code for the unsupported I2C block data, block data,
      proc call and block proc call transfer modes
   o removed detail warnings about unsupported modes that are
     covered in a general warning (unsupported transaction...)
     anyway
   o removed necessity of a definition of struct i2c_adapter
   o moved definition of struct i2c_algorithm, making forward
     declarations of nforce2_access and nforce2_func unnecessary
- minor changes:
   o in the description mention the nForce 5xx chipsets
   o changes my e-mail address in MODULE_AUTHOR

Theses cleanups shrink the driver binary size from 4.0 kB to 2.7 kB
on i386.

Signed-off-by: Hans-Frieder Vogt <hfvogt@gmx.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:29 +01:00
Jean-Baptiste Maneyrol
31c095b09e i2c: Add request/release_mem_region to i2c-ibm_iic bus driver
Reserving I/O memory for a driver with request_mem_region is necessary to
avoid memory access conflicts. Even if it's never going to happen, it is
cleaner and it allows to monitor I/O memory used in /proc/iomem.

Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@teamlog.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:29 +01:00
Vitaly Wool
41561f28e7 i2c: New Philips PNX bus driver
New I2C bus driver for Philips ARM boards (Philips IP3204 I2C IP
block). This I2C controller can be found on (at least) PNX010x,
PNX52xx and PNX4008 Philips boards.

Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:29 +01:00
Jean Delvare
51fd554b65 i2c: Delete the broken i2c-ite bus driver
The rest of the ITE8172 support was already removed from MIPS tree.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
2006-12-10 21:21:29 +01:00
Linus Torvalds
ea14fad0d4 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (76 commits)
  [ARM] 4002/1: S3C24XX: leave parent IRQs unmasked
  [ARM] 4001/1: S3C24XX: shorten reboot time
  [ARM] 3983/2: remove unused argument to __bug()
  [ARM] 4000/1: Osiris: add third serial port in
  [ARM] 3999/1: RX3715: suspend to RAM support
  [ARM] 3998/1: VR1000: LED platform devices
  [ARM] 3995/1: iop13xx: add iop13xx support
  [ARM] 3968/1: iop13xx: add iop13xx_defconfig
  [ARM] Update mach-types
  [ARM] Allow gcc to optimise arm_add_memory a little more
  [ARM] 3991/1: i.MX/MX1 high resolution time source
  [ARM] 3990/1: i.MX/MX1 more precise PLL decode
  [ARM] 3986/1: H1940: suspend to RAM support
  [ARM] 3985/1: ixp4xx clocksource cleanup
  [ARM] 3984/1: ixp4xx/nslu2: Fix disk LED numbering (take 2)
  [ARM] 3994/1: ixp23xx: fix handling of pci master aborts
  [ARM] 3981/1: sched_clock for PXA2xx
  [ARM] 3980/1: extend the ARM Versatile sched_clock implementation from 32 to 63 bit
  [ARM] 3979/1: extend the SA11x0 sched_clock implementation from 32 to 63 bit period
  [ARM] 3978/1: macro to provide a 63-bit value from a 32-bit hardware counter
  ...
2006-12-07 15:40:39 -08:00
Russell King
6705cda24f [ARM] Merge individual ARM sub-trees
Merge:
 Atmel AT91RM9200 and AT91SAM9260 changes
 General ARM developments
 Disconfiguous memory cleanups
 64-bit/32-bit division and sched_clock extension patches
 EP93xx support changes
 IOP support changes

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-07 23:07:26 +00:00
Dan Williams
285f5fa7e9 [ARM] 3995/1: iop13xx: add iop13xx support
The iop348 processor integrates an Xscale (XSC3 512KB L2 Cache) core with a
Serial Attached SCSI (SAS) controller, multi-ported DDR2 memory
controller, 3 Application Direct Memory Access (DMA) controllers, a 133Mhz
PCI-X interface, a x8 PCI-Express interface, and other peripherals to form
a system-on-a-chip RAID subsystem engine.

The iop342 processor replaces the SAS controller with a second Xscale core
for dual core embedded applications.

The iop341 processor is the single core version of iop342.

This patch supports the two Intel customer reference platforms iq81340mc
for external storage and iq81340sc for direct attach (HBA) development.

The developer's manual is available here:
ftp://download.intel.com/design/iio/docs/31503701.pdf

Changelog:
* removed virtual addresses from resource definitions
* cleaned up some unnecessary #include's

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-07 17:20:21 +00:00
Jason Gaston
adbc2a1022 i2c-i801: SMBus patch for Intel ICH9
This updated patch adds the Intel ICH9 LPC and SMBus Controller DID's.  Thi=
s patch relies on the irq ICH9 patch to pci_ids.h.

Signed-off-by: Jason Gaston <jason.d.gaston@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:36:59 -08:00
Russell King
beea494d5e [ARM] Remove EEPROM slave emulation from i2c-pxa driver.
The i2c-pxa driver should not contain EEPROM slave-mode emulation;
this is something the platform should provide where required.  Remove
it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30 12:24:45 +00:00
Jean Delvare
0b1082efb9 [PATCH] Fix i2c-ixp4xx compile (missing brace)
Fix recent i2c-ixp4xx compilation breakage. Sorry for overlooking it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-23 09:27:49 -08:00
Jeff Garzik
ffb3d13486 [PATCH] scx200_acb: handle PCI errors
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-20 09:42:05 -08:00
Alexey Dobriyan
a6cd2d94e1 [PATCH] i2c-ixp4xx: fix ") != 0))" typo
i2c_bit_add_bus() returns -E;
-E != 0		=>	err = 1
probe fails with positive error code

Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org>
Cc: Deepak Saxena <dsaxena@mvista.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-20 09:42:05 -08:00
Russell King
84b5abe69f [ARM] Fix i2c-pxa slave mode support
i2c-pxa times out when trying to enable slave mode due to an
incorrect test.  Also, check that i2c->slave is non-NULL
before dereferencing it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-10-28 22:30:17 +01:00
Jean Delvare
e693810ce8 hwmon: Let w83781d and lm78 load again
Let the w83781d and lm78 hardware monitoring drivers load even when
no chip was detected at the ISA address. There can still be supported
chips connected to an I2C bus or SMBus.

This fixes bug #7293.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-10-18 13:03:09 -07:00
Benjamin Herrenschmidt
9f2545c118 [POWERPC] Fix i2c-powermac platform device usage
i2c-powermac was written & merged right after Russell King's changes
adding platform_driver... which I missed. Thus it still used struct
device, causing crashes when hitting sleep/wakeup callbacks (it happened
to work by luck so far, until early/late callbacks got added). This
causes crashes on sleep/wakeup on PowerBooks with 2.6.19. The patch
fixes it by using a proper platform_driver.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-10 13:56:13 +10:00
David Howells
7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Dave Jones
038b0a6d8d Remove all inclusions of <linux/config.h>
kbuild explicitly includes this at build time.

Signed-off-by: Dave Jones <davej@redhat.com>
2006-10-04 03:38:54 -04:00
Uwe Zeisberger
f30c226954 fix file specification in comments
Many files include the filename at the beginning, serveral used a wrong one.

Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03 23:01:26 +02:00
Matt LaPlante
095096038d Fix several typos in drivers/
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03 22:31:37 +02:00
Alexey Dobriyan
c53421b18f [PATCH] proper flags type of spin_lock_irqsave()
Convert various spin_lock_irqsave() callers to correctly use `unsigned long'.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:21 -07:00
Yoichi Yuasa
ae1390d8c3 [PATCH] i2c-sibyte: Fix modular build breakage
Fix undefined reference in i2c_sibyte_exit().

   drivers/built-in.o: In function `i2c_sibyte_exit':
   i2c-sibyte.c:(.exit.text+0x368): undefined reference to `i2c_del_bus'
   i2c-sibyte.c:(.exit.text+0x368): relocation truncated to fit: R_MIPS_26 against `i2c_del_bus'
   i2c-sibyte.c:(.exit.text+0x38c): undefined reference to `i2c_del_bus'
   i2c-sibyte.c:(.exit.text+0x38c): relocation truncated to fit: R_MIPS_26 against `i2c_del_bus'

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29 09:34:17 -07:00
Linus Torvalds
ebdea46fec Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (130 commits)
  [ARM] 3856/1: Add clocksource for Intel IXP4xx platforms
  [ARM] 3855/1: Add generic time support
  [ARM] 3873/1: S3C24XX: Add irq_chip names
  [ARM] 3872/1: S3C24XX: Apply consistant tabbing to irq_chips
  [ARM] 3871/1: S3C24XX: Fix ordering of EINT4..23
  [ARM] nommu: confirms the CR_V bit in nommu mode
  [ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores.
  [ARM] 3870/1: AT91: Start removing static memory mappings
  [ARM] 3869/1: AT91: NAND support for DK and KB9202 boards
  [ARM] 3868/1: AT91 hardware header update
  [ARM] 3867/1: AT91 GPIO update
  [ARM] 3866/1: AT91 clock update
  [ARM] 3865/1: AT91RM9200 header updates
  [ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series
  [ARM] kthread: switch arch/arm/kernel/apm.c
  [ARM] Off-by-one in arch/arm/common/icst*
  [ARM] 3864/1: Refactore sharpsl_pm
  [ARM] 3863/1: Add Locomo SPI Device
  [ARM] 3847/2:  Convert LOMOMO to use struct device for GPIOs
  [ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h
  ...
2006-09-28 14:40:39 -07:00
Russell King
2dc94310bd Merge master.kernel.org:/pub/scm/linux/kernel/git/tmlind/linux-omap-upstream into devel 2006-09-27 19:57:54 +01:00
Jean Delvare
8f9082c5ce i2c: Constify i2c_algorithm declarations, part 2
i2c: Constify i2c_algorithm declarations, part 2

Make struct i2c_algorithm declarations const in all i2c bus drivers
where it is possible.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:52 -07:00
Rudolf Marek
c243353a90 i2c-viapro: Add support for the VT8237A and VT8251
i2c-viapro: Add support for the VT8237A and VT8251

Documentation update included. Compile tested.

Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:52 -07:00
Adrian Bunk
9b4ccb86b4 i2c-algo-pcf: Discard the mdelay data struct member
i2c-algo-pcf: Discard the mdelay data struct member

Just as i2c-algo-bit, i2c-algo-pcf has an unused mdelay struct member,
which we can get rid of to spare some code and memory.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:52 -07:00
David Hubbard
8202632647 i2c-isa: Fail adding driver on attach_adapter error
i2c-isa: Fail adding driver on attach_adapter error

Signed-off-by: David Hubbard <david.c.hubbard@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:51 -07:00
Jean Delvare
7a8d29cec7 i2c-stub: Chip address as a module parameter
i2c-stub: Chip address as a module parameter

Add a mandatory chip_addr parameter to i2c-stub. This parameter
defines to which chip address the driver will respond, instead of
reponding to all addresses as before. The idea is to prevent the
users from loading i2c-stub at random and being then confused by
the results of sensors-detect or other user-space tools.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:51 -07:00
Komal Shah
010d442c4a i2c: New bus driver for TI OMAP boards
i2c: New bus driver for TI OMAP boards

This patch adds I2C bus driver for various Texas
Instruments (TI) OMAP1/2 (http://www.ti.com/omap) series
based boards like OMAP1510/1610/1710/242x.

Signed-off-by: Komal Shah <komal_shah802003@yahoo.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:51 -07:00
Jean Delvare
a0d9c63d36 i2c-algo-bit: Discard the mdelay data struct member
i2c-algo-bit: Discard the mdelay data struct member

The i2c_algo_bit_data structure has an mdelay member, which is not
used by the algorithm code (the code has always been ifdef'd out.)
Let's discard it to save some code and memory.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:51 -07:00
Domen Puncer
a294de4e97 i2c-au1550: Add I2C support for Au1200
i2c-au1550: Add I2C support for Au1200

Signed-off-by: Domen Puncer <domen.puncer@ultra.si>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:50 -07:00
Domen Puncer
6ed0713479 i2c-au1550: Add SMBus functionality flag
i2c-au1550: Add SMBus functionality flag

Add SMBus functionality flag, so we can use eeprom and similar
drivers.

Signed-off-by: Domen Puncer <domen.puncer@ultra.si>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:50 -07:00
Domen Puncer
8859942ede i2c-au1550: Fix timeout problem
i2c-au1550: Fix timeout problem

Fix from Jordan Crouse:
If the transmit and recieve FIFOS are not empty, forceably flush them
rather then waiting for them to drain on their own.

This solves at least a problem reported by Clem Taylor:
http://www.linux-mips.org/archives/linux-mips/2006-05/msg00240.html
(1% of I2C transactions would timeout)

Signed-off-by: Domen Puncer <domen.puncer@ultra.si>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:50 -07:00
Jean Delvare
643bd3fbd9 i2c-sibyte: Kip Walker is gone
i2c-sibyte: Kip Walker is gone

Kip Walker no longer works at Broadcom, and his e-mail address there
bounces back, so let's drop it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:50 -07:00
Jean Delvare
51c3711704 i2c-algo-sibyte: Merge into i2c-sibyte
i2c-algo-sibyte: Merge into i2c-sibyte

Merge i2c-algo-sibyte into i2c-sibyte, as this is a complete,
hardware-dependent SMBus implementation and not a reusable algorithm.

Perform some basic coding style cleanups while we're here (mainly
space-based indentation replaced by tabulations.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:50 -07:00
Jean Delvare
b119c6c952 i2c: __must_check fixes (core drivers)
i2c: __must_check fixes (core drivers)

Check for error on sysfs file creation.
Check for error on device registration.
Check for error on class device registration.

Greg, I am not familiar with completion, can you please tell me if I
need to take care of it in the error paths (as I did in this patch,
see /* Needed? */ comments), or if it isn't needed?

These patches were tested, including forced errors, so they should work
fine. But of course more testing can't hurt.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26 15:38:50 -07:00
Lennert Buytenhek
72edd84a6b [ARM] 3827/1: iop3xx: add common gpio module
Implement the gpio_line_{config,get,set} API for iop3xx.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-25 10:25:47 +01:00
Lennert Buytenhek
3f7e5815f4 [ARM] 3817/1: iop3xx: split the iop3xx mach into iop32x and iop33x
Split the iop3xx mach type into iop32x and iop33x -- split the config
symbols, and move the code in the mach-iop3xx directory to the mach-iop32x
and mach-iop33x directories.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-25 10:25:36 +01:00
Lennert Buytenhek
98954df691 [ARM] 3816/1: iop3xx: rename config symbols
Rename CONFIG_ARCH_IOP321 to CONFIG_ARCH_IOP32X and
CONFIG_ARCH_IOP331 to CONFIG_ARCH_IOP33X.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-25 10:25:34 +01:00
Paul Mackerras
32bc6e095d Merge branch 'merge' 2006-08-08 17:09:11 +10:00
David Woodhouse
3e3183bab0 [PATCH] SCX200_ACB: eliminate spurious timeout errors
While busy-waiting for completion, check the hardware after scheduling;
don't schedule and then immediately check the _timeout_.  If the yield()
took a long time (as it does on my OLPC prototype board when it's busy),
we'd report a timeout even though the hardware was now ready.

This fixes it, and also switches the yield() for a cond_resched() because
we don't actually want to be _that_ nice about it.  I see nice
tightly-packed SMBus transactions now, rather than waiting for milliseconds
between successive phases.

Actually, we shouldn't be busy-waiting here at all.  We should be using
interrupts.  That's an exercise for another day though.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Cc: Christer Weinigel <wingel@nano-system.com>
Cc: <Jordan.Crouse@amd.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-06 08:57:49 -07:00