Albrecht Dreß 0c2daaafcd powerpc/5200/i2c: improve i2c bus error recovery ... This patch improves the recovery of the MPC's I2C bus from errors like bus hangs resulting in timeouts: 1. make the bus timeout configurable, as it depends on the bus clock and the attached slave chip(s); default is still 1 second; 2. detect any of the cases indicated by the CF, BB and RXAK MSR flags if a timeout occurs, and add a missing (required) MAL reset; 3. use a more reliable method to fixup the bus if a hang has been detected. The sequence is sent 9 times which seems to be necessary if a slave "misses" more than one clock cycle. For 400 kHz bus speed, the fixup is also ~70us (81us vs. 150us) faster. Tested on a custom Lite5200b derived board, with a Dallas RTC, AD sensors and NXP IO expander chips attached to the i2c. Changes vs. v1: - use improved bus fixup sequence for all chips (not only the 5200) - calculate real clock from defaults if no clock is given in the device tree - better description (I hope) of the changes. I didn't split the changes in this file into three parts as recommended by Grant, as they actually belong together (i.e. they address one single problem, just in three places of one single source file). Signed-off-by: Albrecht Dreß <albrecht.dress@arcor.de> [grant.likely@secretlab.ca: fixup for ->node to ->dev.of_node transition] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>		2010-08-01 17:06:44 -06:00
..
ABI	Revert "PCI: create function symlinks in /sys/bus/pci/slots/N/"	2010-06-11 13:08:37 -07:00
accounting	Documentation/: fix warnings from -Wmissing-prototypes in HOSTCFLAGS	2009-09-23 07:39:28 -07:00
acpi	ACPI, APEI, EINJ injection parameters support	2010-05-19 22:42:08 -04:00
aoe	aoe: user can ask driver to forget previously detected devices	2008-02-08 09:22:31 -08:00
arm	ARM: SAMSUNG: Documentation: add documentation on GPIO code	2010-05-28 19:31:31 +09:00
auxdisplay	includecheck fix: Documentation, cfag12864b-example.c	2009-09-24 07:20:57 -07:00
blackfin	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
block	Documentation: fix block/biodoc.txt dma mapping description	2010-03-08 09:11:07 +01:00
blockdev	The DRBD driver	2009-10-01 21:17:49 +02:00
cdrom	ide: doc: remove compilation options section from ide-cd documentation	2009-12-13 20:41:53 -08:00
cgroups	memcg: update documentation	2010-05-27 09:12:43 -07:00
connector	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
console	doc: fix console doc typo	2010-02-24 13:51:32 +01:00
cpu-freq	[CPUFREQ] Processor Clocking Control interface driver	2010-01-13 10:55:16 -05:00
cpuidle	cpuidle: Add Documentation	2008-02-14 00:16:13 -05:00
cris	fix random typos	2008-10-16 11:21:30 -07:00
crypto	async_tx: add support for asynchronous RAID6 recovery operations	2009-08-29 19:09:27 -07:00
development-process	Documentation/development-process: add staging & mmotm info	2010-05-24 07:30:55 -07:00
device-mapper	dm: document when snapshot has finished merging	2010-03-06 02:29:56 +00:00
DocBook	Merge branch 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2010-06-04 15:38:12 -07:00
driver-model	Fix spelling of 'platform' in comments and doc	2010-02-05 12:22:34 +01:00
dvb	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
early-userspace	Documentation: Remove last references to BitKeeper.	2008-04-21 22:19:05 +00:00
fault-injection	lkdtm: add debugfs access and loosen KPROBE ties	2010-03-06 11:26:32 -08:00
fb	fbdev: rename imacfb.txt to efifb.txt and change imacfb to efifb.	2010-04-07 08:38:02 -07:00
filesystems	Merge branch 'master' into for-linus	2010-06-04 13:22:30 -05:00
firmware_class	driver core: fix documentation of request_firmware_nowait	2009-06-15 21:30:24 -07:00
frv	move frv docs one level up	2008-02-03 15:54:28 +02:00
hwmon	hwmon: (ltc4245) Read only one GPIO pin	2010-05-27 19:59:02 +02:00
i2c	Documentation/i2c: Checkpatch cleanup	2010-06-03 11:33:50 +02:00
i2o
ia64	Documentation/: fix warnings from -Wmissing-prototypes in HOSTCFLAGS	2009-09-23 07:39:28 -07:00
ide	ide: preserve Host Protected Area by default (v2)	2009-06-07 13:52:52 +02:00
infiniband	IB: Fix typo in ipoib.txt	2009-12-09 14:21:36 -08:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-05-20 09:20:59 -07:00
ioctl	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2010-03-19 09:43:06 -07:00
isdn	gigaset: small documentation improvement	2010-02-26 01:24:22 -08:00
ja_JP	block: rename CONFIG_LBD to CONFIG_LBDAF	2009-06-19 08:08:50 +02:00
kbuild	Merge branch 'for-35' of git://repo.or.cz/linux-kbuild	2010-06-01 08:55:52 -07:00
kdump	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
ko_KR
kvm	KVM: MMU: Segregate shadow pages with different cr0.wp	2010-05-19 11:41:09 +03:00
laptops	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86	2010-05-21 17:13:24 -07:00
lguest	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
m68k
make
mips	ide: remove unused CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ	2009-01-14 19:19:03 +01:00
misc-devices	ad525x_dpot: new driver for AD525x digital potentiometers	2009-12-15 08:53:25 -08:00
mn10300	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
mtd	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
namespaces
netlabel	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
networking	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	2010-05-20 21:04:44 -07:00
parisc
PCI	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2010-05-21 18:58:52 -07:00
pcmcia	pcmcia: dev_node removal (core)	2010-05-10 10:23:17 +02:00
power	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2010-05-21 18:58:52 -07:00
powerpc	powerpc/5200/i2c: improve i2c bus error recovery	2010-08-01 17:06:44 -06:00
pps	LinuxPPS: core support	2009-06-18 13:04:04 -07:00
prctl	generic, x86: add tests for prctl PR_GET_TSC and PR_SET_TSC	2008-04-19 19:19:55 +02:00
RCU	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-05-18 08:27:54 -07:00
s390	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
scheduler	sched: Remove USER_SCHED from documentation	2010-04-02 20:12:01 +02:00
scsi	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
serial	ldisc: new dcd_change() method for line disciplines	2010-03-12 15:52:43 -08:00
sh	sh: Kill off remaining CONFIG_SH_KGDB bits.	2008-12-22 18:44:05 +09:00
sound	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6	2010-05-20 09:41:44 -07:00
sparc	sparc: Remove Documentation/sparc/sbus_drivers.txt	2008-08-29 02:15:25 -07:00
spi	spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller	2010-05-25 00:23:16 -06:00
sysctl	mm: compaction: add a tunable that decides when memory should be compacted and when it should be reclaimed	2010-05-25 08:06:59 -07:00
telephony	remove mention of CONFIG_KMOD from documentation	2008-07-22 19:24:29 +10:00
thermal	thermal: add sanity check for the passive attribute	2009-11-05 18:18:10 -05:00
timers	Documentation/timers/hpet_example.c: only build on X86	2010-06-01 10:05:19 -07:00
trace	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-05-20 09:20:59 -07:00
uml
usb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6	2010-05-20 21:26:12 -07:00
video4linux	V4L/DVB: Documentation: Add the Philips FQ1236 MK5 to video4linux/CARDLIST.tuner	2010-07-08 16:50:05 -03:00
vm	numa: update Documentation/vm/numa, add memoryless node info	2010-05-27 09:12:57 -07:00
w1	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
watchdog	watchdog: docs: add an entry for imx2_wdt	2010-07-01 16:02:55 +00:00
wimax	i2400m: documentation and instructions for usage	2009-01-07 10:00:18 -08:00
x86	x86, numa: Remove configurable node size support for numa emulation	2010-02-15 14:34:18 -08:00
zh_CN
.gitignore	add random binaries to .gitignore	2010-04-08 11:34:34 +02:00
00-INDEX	documentation: fix almost duplicate filenames (IO/io-mapping.txt)	2010-07-20 17:49:30 +00:00
applying-patches.txt
atomic_ops.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
bad_memory.txt	Document handling of bad memory	2008-12-03 16:09:53 -07:00
basic_profiling.txt
binfmt_misc.txt
braille-console.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
bt8xxgpio.txt	gpio: add bt8xxgpio driver	2008-07-25 10:53:30 -07:00
btmrvl.txt	Bluetooth: Add documentation for Marvell Bluetooth driver	2009-08-22 14:25:32 -07:00
BUG-HUNTING	Documentation: add hint about call traces & module symbols to BUG-HUNTING	2008-02-06 10:41:09 -08:00
bus-virt-phys-mapping.txt	documentation: fix almost duplicate filenames (IO/io-mapping.txt)	2010-07-20 17:49:30 +00:00
cachetlb.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
Changes	netfilter: xtables: remove xt_string revision 0	2010-03-25 17:04:57 +01:00
circular-buffers.txt	Document Linux's circular buffering capabilities	2010-03-24 16:31:22 -07:00
CodingStyle	trivial: fix typo milisecond/millisecond for documentation and source comments.	2009-06-12 18:01:46 +02:00
cpu-hotplug.txt	cpumask: don't recommend set_cpus_allowed hack in Documentation/cpu-hotplug.txt	2009-12-17 11:43:29 +10:30
cpu-load.txt
cputopology.txt	Documentation: ABI: /sys/devices/system/cpu/cpu#/ topology files	2009-10-30 14:59:52 -07:00
credentials.txt	CRED: Holding a spinlock does not imply the holding of RCU read lock	2010-04-27 08:49:03 +10:00
dcdbas.txt
debugging-modules.txt	Documentation: Clarify when module debugging actually works.	2008-02-03 15:27:38 +02:00
debugging-via-ohci1394.txt	ieee1394: update URLs in debugging-via-ohci1394.txt	2009-10-03 09:28:11 +02:00
dell_rbu.txt	trivial: Documentation/dell_rbu.txt: fix typos	2009-06-12 18:01:50 +02:00
devices.txt	driver core: add devname module aliases to allow module on-demand auto-loading	2010-05-25 15:08:26 -07:00
DMA-API-HOWTO.txt	Documentation/DMA-API-HOWTO: add ARCH_KMALLOC_MINALIGN description	2010-05-27 09:12:53 -07:00
DMA-API.txt	Documentation: rename PCI-DMA-mapping.txt to DMA-API-HOWTO.txt	2010-03-12 15:52:43 -08:00
DMA-attributes.txt	powerpc/cell: Add DMA_ATTR_WEAK_ORDERING dma attribute and use in Cell IOMMU code	2008-07-22 10:39:36 +10:00
DMA-ISA-LPC.txt
dmaengine.txt	async_tx, dmaengine: document channel allocation and api rework	2009-01-05 18:10:19 -07:00
dontdiff	Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig	2010-02-25 14:43:57 -08:00
dynamic-debug-howto.txt	Dynamic debug: allow simple quoting of words	2009-03-24 16:38:27 -07:00
edac.txt	Documentation/edac.txt: Reflect the sysfs changes at the document	2010-05-10 11:49:30 -03:00
eisa.txt	doc: fix Defaultd -> Defaults typo in EISA doc	2010-02-05 12:22:39 +01:00
email-clients.txt	Documentation/email-clients.txt: update gmail information	2010-03-12 15:52:35 -08:00
feature-removal-schedule.txt	ACPI: update feature-removal.txt to reflect deleted acpi=ht option	2010-06-01 12:13:23 -04:00
flexible-arrays.txt	Update flex_arrays.txt	2009-10-15 07:25:20 -06:00
futex-requeue-pi.txt	futex: add requeue-pi documentation	2009-05-09 07:12:50 +02:00
gcov.txt	trivial: fix typo in CONFIG_DEBUG_FS in gcov doc	2009-09-21 15:14:56 +02:00
gpio.txt	gpio: introduce gpio_request_one() and friends	2010-03-06 11:26:48 -08:00
highuid.txt	[SPARC]: Remove SunOS and Solaris binary support.	2008-04-21 15:10:15 -07:00
HOWTO	Documentation/HOWTO: update git home URL	2010-04-22 15:24:56 -07:00
hw_random.txt	hw_random doc updates	2008-03-24 19:22:19 -07:00
init.txt	init/main.c: improve usability in case of init binary failure	2010-03-06 11:26:29 -08:00
initrd.txt	use the newc archive format as requested by initramfs	2008-02-03 14:54:41 +02:00
intel_txt.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-05-20 09:20:59 -07:00
Intel-IOMMU.txt	intel-iommu: Kill DMAR_BROKEN_GFX_WA option.	2009-09-19 09:37:23 -07:00
io_ordering.txt
io-mapping.txt	io mapping: improve documentation	2008-11-03 18:21:44 +01:00
iostats.txt	Documentation cleanup: trivial misspelling, punctuation, and grammar corrections.	2008-07-26 12:00:06 -07:00
IPMI.txt	ipmi: add parameter to limit CPU usage in kipmid	2010-03-12 15:52:39 -08:00
IRQ-affinity.txt	genirq: Expose default irq affinity mask (take 3)	2008-06-05 15:18:30 +02:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt	documentation: update kernel-doc-nano-HOWTO information	2010-01-11 09:34:07 -08:00
kernel-docs.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
kernel-parameters.txt	lmb: rename to memblock	2010-07-14 17:14:00 +10:00
keys-request-key.txt	keys: allow the callout data to be passed as a blob rather than a string	2008-04-29 08:06:16 -07:00
keys.txt	KEYS: Add a keyctl to install a process's session keyring on its parent [try #6]	2009-09-02 21:29:22 +10:00
kmemcheck.txt	kmemcheck: update documentation	2009-07-01 22:36:22 +02:00
kmemleak.txt	kmemleak: add clear command support	2009-09-08 16:36:08 +01:00
kobject.txt	kobject: documentation: Update to refer to kset-example.c.	2010-03-19 07:12:20 -07:00
kprobes.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-05-20 09:20:59 -07:00
kref.txt	kref: double kref_put() in my_data_handler()	2009-09-18 09:48:52 -07:00
ldm.txt
leds-class.txt	led: document sysfs interface	2009-08-28 15:21:12 -04:00
leds-lp3944.txt	leds: LED driver for National Semiconductor LP3944 Funlight Chip	2009-06-23 20:21:38 +01:00
local_ops.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
lockdep-design.txt	lockdep: Fix typos in documentation	2009-08-07 12:03:46 +02:00
lockstat.txt	lockstat: Add usage info to Documentation/lockstat.txt	2009-12-06 13:20:02 +01:00
logo.gif	Revert "linux.conf.au 2009: Tuz"	2009-04-27 12:00:27 -07:00
logo.txt	Revert "linux.conf.au 2009: Tuz"	2009-04-27 12:00:27 -07:00
magic-number.txt	documentation: update header file paths	2009-01-06 15:59:28 -08:00
Makefile	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
ManagementStyle	docs: fix ManagementStyle book name	2008-10-30 11:38:46 -07:00
mca.txt	The ps2esdi driver was marked as BROKEN more than two years ago due to being	2008-03-17 09:03:05 +01:00
md.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
memory-barriers.txt	Document Linux's circular buffering capabilities	2010-03-24 16:31:22 -07:00
memory-hotplug.txt	mm: add numa node symlink for memory section in sysfs	2009-12-15 08:53:17 -08:00
memory.txt	Documentation/memory.txt: remove some very outdated recommendations	2009-09-22 07:17:26 -07:00
mono.txt
mutex-design.txt	Rename .text.lock to .text..lock.	2010-03-03 11:26:00 +01:00
nmi_watchdog.txt	x86, nmi-watchdog: update procfs nmi_watchdog file documentation v2	2008-10-30 19:07:04 +01:00
nommu-mmap.txt	nommu: fix malloc performance by adding uninitialized flag	2009-12-15 08:53:24 -08:00
numastat.txt	mm: fix NUMA accounting in numastat.txt	2009-09-22 07:17:39 -07:00
oops-tracing.txt	panic: Add taint flag TAINT_FIRMWARE_WORKAROUND ('I')	2010-05-19 08:37:43 +01:00
padata.txt	Add a document describing the padata interface	2010-05-14 09:18:55 -06:00
parport-lowlevel.txt
parport.txt
pi-futex.txt
pnp.txt	doc: capitalization and other minor fixes in pnp doc	2010-02-05 12:22:44 +01:00
preempt-locking.txt
printk-formats.txt	DOC: add printk-formats.txt	2008-11-12 17:17:17 -08:00
prio_tree.txt
rbtree.txt	rbtree: Add support for augmented rbtrees	2010-02-18 15:40:56 -08:00
rfkill.txt	Document the rfkill sysfs ABI	2010-03-10 17:09:33 -05:00
robust-futex-ABI.txt	futex: documentation: fix inconsistent description of futex list_op_pending	2009-06-18 13:03:56 -07:00
robust-futexes.txt
rt-mutex-design.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
rt-mutex.txt
rtc.txt	rtc: add boot_timesource sysfs attribute	2009-09-23 07:39:46 -07:00
SAK.txt	Remove Andrew Morton's old email accounts	2008-10-16 11:21:32 -07:00
SecurityBugs
SELinux.txt	selinux: add support for installing a dummy policy (v2)	2008-08-27 08:54:08 +10:00
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
slow-work.txt	SLOW_WORK: Move slow_work's proc file to debugfs	2009-12-01 08:20:31 -08:00
SM501.txt	trivial: Miscellaneous documentation typo fixes	2009-06-12 18:01:47 +02:00
Smack.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
sparse.txt	doc: Change urls for sparse	2010-04-27 22:59:07 +02:00
spinlocks.txt	Documentation: rw_lock lessons learned	2009-12-14 09:46:56 -08:00
stable_api_nonsense.txt
stable_kernel_rules.txt	Documentation: -stable rules: upstream commit ID requirement reworded	2010-04-22 15:24:56 -07:00
SubmitChecklist	Documentation: update SubmitChecklist for O=objdir and kconfig testing	2010-05-24 07:31:20 -07:00
SubmittingDrivers	Documentation: SubmittingDrivers: Resources	2010-05-27 09:12:43 -07:00
SubmittingPatches	docs: update patch size in SubmittingPatches	2009-10-01 16:11:12 -07:00
svga.txt
sysfs-rules.txt	Fix typos in comments	2010-03-16 11:47:56 +01:00
sysrq.txt	Input: Documentation/sysrq.txt - update KEY_SYSRQ info	2010-05-19 10:14:15 -07:00
tomoyo.txt	tomoyo: add Documentation/tomoyo.txt	2009-04-14 09:14:58 +10:00
unaligned-memory-access.txt	introduce HAVE_EFFICIENT_UNALIGNED_ACCESS Kconfig symbol	2008-07-25 10:53:27 -07:00
unicode.txt
unshare.txt
VGA-softcursor.txt
vgaarbiter.txt	vgaarbiter: fix a typo in the vgaarbiter Documentation	2009-12-16 11:28:58 -08:00
video-output.txt
volatile-considered-harmful.txt	Documentation/volatile-considered-harmful.txt: correct cpu_relax() documentation	2010-03-24 16:31:20 -07:00
zorro.txt