* 'for-linus/i2c-2635' of git://git.fluff.org/bjdooks/linux: (21 commits)
  i2c-highlander: remover superflous variable
  i2c-ibm-iic: drop NO_IRQ
  i2c-cpm: drop NO_IRQ
  i2c-mpc: drop NO_IRQ
  MAINTAINERS: add i2c tree for embedded platforms
  i2c-pxa: only define 'blue_murder'-function if DEBUG is #defined
  i2c-pxa: remove unused macro
  i2c-nomadik: fix operator precedence warning
  i2c-nomadik: release region when removed
  OMAP3: I2C: Clean up Errata 1p153 handling
  OMAP2/3: I2C: Errata ID i207: Clear wrong RDR interrupt
  omap: i2c: add a timeout to the busy waiting
  omap: i2c: make errata 1.153 workaround a separate function
  i2c-omap: add mpu wake up latency constraint in i2c
  omap: i2c: Add i2c support on omap4 platform
  i2c-bfin-twi: return completion in interrupt for smbus quick transfers
  i2c-bfin-twi: remove redundant retry
  i2c-bfin-twi: fix lost interrupts at high speeds
  i2c-bfin-twi: add debug output for error status
  i2c-bfin-twi: integrate timeout timer with completion interface
  ...

* 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (534 commits)
  V4L/DVB (13554a): v4l: Use the video_drvdata function in drivers
  V4L/DVB: vivi and mem2mem_testdev need slab.h to build
  V4L/DVB: tm6000: bugfix image position
  V4L/DVB: IR/imon: remove dead IMON_KEY_RELEASE_OFFSET
  V4L/DVB: tm6000: README - add vbi
  V4L/DVB: Fix unlock logic at medusa_video_init
  V4L/DVB: fix dvb frontend lockup
  V4L/DVB: s2255drv: remove dead code
  V4L/DVB: s2255drv: return if vdev not found
  V4L/DVB: ov511: cleanup: remove unneeded null check
  V4L/DVB: media/mem2mem: dereferencing free memory
  V4L/DVB: media/IR: Add missing include file to rc-map.c
  V4L/DVB: dvb/stv6110x: cleanup error handling
  V4L/DVB: ngene: Add lgdt3303 and mt2131 deps to Kconfig
  V4L/DVB: ngene: start separating out DVB functions into separate file
  V4L/DVB: ngene: split out card specific code into a separate file
  V4L/DVB: ngene: split out i2c code into a separate file
  V4L/DVB: ngene: add initial support for digital side of Avermedia m780
  V4L/DVB: ngene: properly support boards where channel 0 isn't a TS input
  V4L-DVB: ngene: make sure that tuner headers are included
  ...

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (49 commits)
  libata-sff: separate out BMDMA qc_issue
  libata-sff: prd is BMDMA specific
  libata-sff: ata_sff_[dumb_]qc_prep are BMDMA specific
  libata-sff: separate out BMDMA EH
  libata-sff: port_task is SFF specific
  libata-sff: ap->[last_]ctl are SFF specific
  libata-sff: rename ap->ops->drain_fifo() to sff_drain_fifo()
  libata-sff: introduce ata_sff_init/exit() and ata_sff_port_init()
  libata-sff: clean up BMDMA initialization
  libata-sff: clean up inheritance in several drivers
  libata-sff: reorder SFF/BMDMA functions
  sata_inic162x: kill PORT_PRD_ADDR initialization
  libata: kill ATA_FLAG_DISABLED
  libata-sff: kill unused prototype and make ata_dev_select() static
  libata-sff: update bmdma host bus error handling
  sata_mv: remove unnecessary initialization
  sata_inic162x: inic162x is not dependent on CONFIG_ATA_SFF
  pata_sch: use ata_pci_sff_init_one()
  pata_sil680: Do our own exec_command posting
  libata: Remove excess delay in the tf_load path
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (44 commits)
  vlynq: make whole Kconfig-menu dependant on architecture
  add descriptive comment for TIF_MEMDIE task flag declaration.
  EEPROM: max6875: Header file cleanup
  EEPROM: 93cx6: Header file cleanup
  EEPROM: Header file cleanup
  agp: use NULL instead of 0 when pointer is needed
  rtc-v3020: make bitfield unsigned
  PCI: make bitfield unsigned
  jbd2: use NULL instead of 0 when pointer is needed
  cciss: fix shadows sparse warning
  doc: inode uses a mutex instead of a semaphore.
  uml: i386: Avoid redefinition of NR_syscalls
  fix "seperate" typos in comments
  cocbalt_lcdfb: correct sections
  doc: Change urls for sparse
  Powerpc: wii: Fix typo in comment
  i2o: cleanup some exit paths
  Documentation/: it's -> its where appropriate
  UML: Fix compiler warning due to missing task_struct declaration
  UML: add kernel.h include to signal.c
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: (29 commits)
  pcmcia: disable PCMCIA ioctl also for ARM
  drivers/staging/comedi: dev_node removal (quatech_daqp_cs)
  drivers/staging/comedi: dev_node removal (ni_mio_cs)
  drivers/staging/comedi: dev_node removal (ni_labpc_cs)
  drivers/staging/comedi: dev_node removal (ni_daq_dio24)
  drivers/staging/comedi: dev_node removal (ni_daq_700)
  drivers/staging/comedi: dev_node removal (das08_cs)
  drivers/staging/comedi: dev_node removal (cb_das16_cs)
  pata_pcmcia: get rid of extra indirection
  pcmcia: remove suspend-related comment from yenta_socket.c
  pcmcia: call pcmcia_{read,write}_cis_mem with ops_mutex held
  pcmcia: remove pcmcia_add_device_lock
  pcmcia: update gfp/slab.h includes
  pcmcia: remove unused mem_op.h
  pcmcia: do not autoadd root PCI bus resources
  pcmcia: clarify alloc_io_space, move it to resource handlers
  pcmcia: move all pcmcia_resource_ops providers into one module
  pcmcia: move high level CIS access code to separate file
  pcmcia: dev_node removal (core)
  pcmcia: dev_node removal (remaining drivers)
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: PM QOS update fix
  Freezer / cgroup freezer: Update stale locking comments
  PM / platform_bus: Allow runtime PM by default
  i2c: Fix bus-level power management callbacks
  PM QOS update
  PM / Hibernate: Fix block_io.c printk warning
  PM / Hibernate: Group swap ops
  PM / Hibernate: Move the first_sector out of swsusp_write
  PM / Hibernate: Separate block_io
  PM / Hibernate: Snapshot cleanup
  FS / libfs: Implement simple_write_to_buffer
  PM / Hibernate: document open(/dev/snapshot) side effects
  PM / Runtime: Add sysfs debug files
  PM: Improve device power management document
  PM: Update device power management document
  PM: Allow runtime_suspend methods to call pm_schedule_suspend()
  PM: pm_wakeup - switch to using bool

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: change cancel_work_sync() to clear work->data
  workqueue: warn about flush_scheduled_work()

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  ia64: add sparse annotation to __ia64_per_cpu_var()
  percpu: implement kernel memory based chunk allocation
  percpu: move vmalloc based chunk management into percpu-vm.c
  percpu: misc preparations for nommu support
  percpu: reorganize chunk creation and destruction
  percpu: factor out pcpu_addr_in_first/reserved_chunk() and update per_cpu_ptr_to_phys()

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/core: Use kmemdup() instead of kmalloc()+memcpy()
  IB/iser: Fix error flow in iser_create_ib_conn_res()
  IB/iser: Enhance disconnection logic for multi-pathing
  IB/iser: Remove buggy back-pointer setting
  IB/iser: Add asynchronous event handler
  MAINTAINERS: Add cxgb4 and iw_cxgb4 entries
  RDMA/cxgb3: Shrink .text with compile-time init of handlers arrays
  IPoIB: Allow disabling/enabling TSO on the fly through ethtool
  IB/mlx4: Add support for masked atomic operations
  IB/core: Add support for masked atomic operations
  RDMA/cma: Randomize local port allocation
  RDMA/nes: Make unnecessarily global functions static
  RDMA/nes: Make nesadapter->phy_lock usage consistent
  RDMA/cxgb4: Add driver for Chelsio T4 RNIC
  IB/mthca: Use the dma state API instead of pci equivalents
  RDMA/amso1100: Use the dma state API instead of pci equivalents
  RDMA/cxgb3: Don't free skbs on NET_XMIT_* indications from LLD
  RDMA/cxgb3: Use the dma state API instead of pci equivalents
  IB: Explicitly rule out llseek to avoid BKL in default_llseek()

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (61 commits)
  KEYS: Return more accurate error codes
  LSM: Add __init to fixup function.
  TOMOYO: Add pathname grouping support.
  ima: remove ACPI dependency
  TPM: ACPI/PNP dependency removal
  security/selinux/ss: Use kstrdup
  TOMOYO: Use stack memory for pending entry.
  Revert "ima: remove ACPI dependency"
  Revert "TPM: ACPI/PNP dependency removal"
  KEYS: Do preallocation for __key_link()
  TOMOYO: Use mutex_lock_interruptible.
  KEYS: Better handling of errors from construct_alloc_key()
  KEYS: keyring_serialise_link_sem is only needed for keyring->keyring links
  TOMOYO: Use GFP_NOFS rather than GFP_KERNEL.
  ima: remove ACPI dependency
  TPM: ACPI/PNP dependency removal
  selinux: generalize disabling of execmem for plt-in-heap archs
  LSM Audit: rename LSM_AUDIT_NO_AUDIT to LSM_AUDIT_DATA_NONE
  CRED: Holding a spinlock does not imply the holding of RCU read lock
  SMACK: Don't #include Ext2 headers
  ...

* 'for-2.6.35' of git://linux-nfs.org/~bfields/linux: (45 commits)
  Revert "nfsd4: distinguish expired from stale stateids"
  nfsd: safer initialization order in find_file()
  nfs4: minor callback code simplification, comment
  NFSD: don't report compiled-out versions as present
  nfsd4: implement reclaim_complete
  nfsd4: nfsd4_destroy_session must set callback client under the state lock
  nfsd4: keep a reference count on client while in use
  nfsd4: mark_client_expired
  nfsd4: introduce nfs4_client.cl_refcount
  nfsd4: refactor expire_client
  nfsd4: extend the client_lock to cover cl_lru
  nfsd4: use list_move in move_to_confirmed
  nfsd4: fold release_session into expire_client
  nfsd4: rename sessionid_lock to client_lock
  nfsd4: fix bare destroy_session null dereference
  nfsd4: use local variable in nfs4svc_encode_compoundres
  nfsd: further comment typos
  sunrpc: centralise most calls to svc_xprt_received
  nfsd4: fix unlikely race in session replay case
  nfsd4: fix filehandle comment
  ...

* 'nfs-for-2.6.35' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (78 commits)
  SUNRPC: Don't spam gssd with upcall requests when the kerberos key expired
  SUNRPC: Reorder the struct rpc_task fields
  SUNRPC: Remove the 'tk_magic' debugging field
  SUNRPC: Move the task->tk_bytes_sent and tk_rtt to struct rpc_rqst
  NFS: Don't call iput() in nfs_access_cache_shrinker
  NFS: Clean up nfs_access_zap_cache()
  NFS: Don't run nfs_access_cache_shrinker() when the mask is GFP_NOFS
  SUNRPC: Ensure rpcauth_prune_expired() respects the nr_to_scan parameter
  SUNRPC: Ensure memory shrinker doesn't waste time in rpcauth_prune_expired()
  SUNRPC: Dont run rpcauth_cache_shrinker() when gfp_mask is GFP_NOFS
  NFS: Read requests can use GFP_KERNEL.
  NFS: Clean up nfs_create_request()
  NFS: Don't use GFP_KERNEL in rpcsec_gss downcalls
  NFSv4: Don't use GFP_KERNEL allocations in state recovery
  SUNRPC: Fix xs_setup_bc_tcp()
  SUNRPC: Replace jiffies-based metrics with ktime-based metrics
  ktime: introduce ktime_to_ms()
  SUNRPC: RPC metrics and RTT estimator should use same RTT value
  NFS: Calldata for nfs4_renew_done()
  NFS: Squelch compiler warning in nfs_add_server_stats()
  ...

* 'bkl/procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:
  sunrpc: Include missing smp_lock.h
  procfs: Kill the bkl in ioctl
  procfs: Push down the bkl from ioctl
  procfs: Use generic_file_llseek in /proc/vmcore
  procfs: Use generic_file_llseek in /proc/kmsg
  procfs: Use generic_file_llseek in /proc/kcore
  procfs: Kill BKL in llseek on proc base

* 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  clocksource: Add clocksource_register_hz/khz interface
  posix-cpu-timers: Optimize run_posix_cpu_timers()
  time: Remove xtime_cache
  mqueue: Convert message queue timeout to use hrtimers
  hrtimers: Provide schedule_hrtimeout for CLOCK_REALTIME
  timers: Introduce the concept of timer slack for legacy timers
  ntp: Remove tickadj
  ntp: Make time_adjust static
  time: Add xtime, wall_to_monotonic to feature-removal-schedule
  timer: Try to survive timer callback preempt_count leak
  timer: Split out timer function call
  timer: Print function name for timer callbacks modifying preemption count
  time: Clean up warp_clock()
  cpu-timers: Avoid iterating over all threads in fastpath_timer_check()
  cpu-timers: Change SIGEV_NONE timer implementation
  cpu-timers: Return correct previous timer reload value
  cpu-timers: Cleanup arm_timer()
  cpu-timers: Simplify RLIMIT_CPU handling

Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  cs5535-clockevt: Free timer in IRQ setup error path

Merge branch 'timers-for-linus-hpet' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'timers-for-linus-hpet' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, hpet: Add reference to chipset erratum documentation for disable-hpet-msi-quirk
  x86, hpet: Restrict read back to affected ATI chipsets

Merge branch 'timers-for-linus-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'timers-for-linus-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  avr32: Fix typo in read_persistent_clock()
  sparc: Convert sparc to use read/update_persistent_clock
  cris: Convert cris to use read/update_persistent_clock
  m68k: Convert m68k to use read/update_persistent_clock
  m32r: Convert m32r to use read/update_peristent_clock
  blackfin: Convert blackfin to use read/update_persistent_clock
  ia64: Convert ia64 to use read/update_persistent_clock
  avr32: Convert avr32 to use read/update_persistent_clock
  h8300: Convert h8300 to use read/update_persistent_clock
  frv: Convert frv to use read/update_persistent_clock
  mn10300: Convert mn10300 to use read/update_persistent_clock
  alpha: Convert alpha to use read/update_persistent_clock
  xtensa: Fix unnecessary setting of xtime
  time: Clean up direct xtime usage in xen

Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Clear CPU mask in affinity_hint when none is provided
  genirq: Add CPU mask affinity hint
  genirq: Remove IRQF_DISABLED from core code
  genirq: Run irq handlers with interrupts disabled
  genirq: Introduce request_any_context_irq()
  genirq: Expose irq_desc->node in proc/irq

Fixed up trivial conflicts in Documentation/feature-removal-schedule.txt

When cppcheck found this flaw

[./i2c/busses/i2c-highlander.c:284]: (style) Warning - using char variable in bit operation

it was noted that the 'read'-variable could be simply removed as read_write can
only be 0 or 1 anyhow. So, we remove the flaw and simplify the code.
Reported-by: d binderman <dcb314@hotmail.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>

Drop NO_IRQ as 0 is the preferred way to describe 'no irq'
(http://lkml.org/lkml/2005/11/21/221). This change is safe, as the driver is
only used on powerpc, where NO_IRQ is 0 anyhow.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
Cc: Ben Dooks <ben-linux@fluff.org>

Drop NO_IRQ as 0 is the preferred way to describe 'no irq'
(http://lkml.org/lkml/2005/11/21/221). This change is safe, as the driver is
only used on powerpc, where NO_IRQ is 0 anyhow.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jochen Friedrich <jochen@scram.de>
Cc: Ben Dooks <ben-linux@fluff.org>

Drop NO_IRQ as 0 is the preferred way to describe 'no irq'
(http://lkml.org/lkml/2005/11/21/221). This change is safe, as the driver is
only used on powerpc, where NO_IRQ is 0 anyhow.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Ben Dooks <ben-linux@fluff.org>

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

This talkative function is also called on timeouts. As timeouts can
happen on regular writes to EEPROMs (no error case), this creates false
positives.  Giving lots of details is interesting only for developers
anyhow, so just use the function if DEBUG is #defined.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Cc: Roel Kluin <roel.kluin@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>

Commit

	beea494d ([ARM] Remove EEPROM slave emulation from i2c-pxa driver.)

removed all uses of eedbg, so the definition can go, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

Fix this warning:
i2c-nomadik.c:707: warning: suggest parentheses around operand of '!' or change '&' to '&&' or '!' to '~'
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

So that the module can be loaded again after an unload.
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

Clean up existing Errata 1p153 handling to use generic
errata handling mechanism through dev flag.
Signed-off-by: Manjunatha GK <manjugk@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

Under certain rare conditions, I2C_STAT[13].RDR bit may be set
and the corresponding interrupt fire, even there is no data in
the receive FIFO, or the I2C data transfer is still ongoing.
These spurious RDR events must be ignored by the software.

This patch handles and ignores RDR spurious interrupts.

The below sequence is required in interrupt handler for
handling this errata:
1. If RDR is set to 1, clear RDR
2. Read I2C status register and check for BusBusy bit. If BusBusy
bit is set, skip remaining steps.
3. If BusBusy bit is not set, perform read operation on I2C status
register.
4. If RDR is set, clear the same. Check RDR again and clear if it sets
RDR bit again.
5. Perform I2C Data Read operation N number of times(where N is value
read from the register BUFSTAT-RXSTAT bit fields).

Note:
This errata is not applicable for omap2420 and omap4.
It is applicable for:
1. omap2430
2. omap34xx(including omap3630).
Signed-off-by: Manjunatha GK <manjugk@ti.com>
Cc: Hema Kalliguddi <hemahk@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Aaro Koskinen <Aaro.Koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

The errata 1.153 workaround is busy waiting on XUDF bit in interrupt
context, which may lead to kernel hangs. The problem can be reproduced
by running the bus with wrong (too high) speed.
Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

This is to avoid insanely long lines and levels of indentation.
Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Cc: Nishant Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

While waiting for completion of the i2c transfer, the
MPU could hit OFF mode and cause several msecs of
delay that made i2c transfers fail more often. The
extra delays and subsequent re-trys cause i2c clocks
to be active more often. This has also an negative
effect on power consumption.

Created a mechanism for passing and using the
constraint setting function in driver code. The used
mpu wake up latency constraints are now set individually
per bus, and they are calculated based on clock rate
and fifo size.

Thanks to Jarkko Nikula, Moiz Sonasath, Paul Walmsley,
and Nishanth Menon for tuning out the details of
this patch.

Updates by Kevin as requested by Tony:

- Remove omap_set_i2c_constraint_func() in favor of conditionally
  adding the flag in omap_i2c_add_bus() in order to keep all the OMAP
  conditional checking in a single location.
- Update set_mpu_wkup_lat prototypes to match OMAP PM layer so
  OMAP PM function can be used directly in pdata.

Cc: Moiz Sonasath <m-sonasath@ti.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

This patch is rebased version of earlier post to add I2C
driver support to OMAP4 platform. On OMAP4, all
I2C register address offsets are changed from OMAP1/2/3 I2C.
In order to not have #ifdef's at various places in code,
as well as to support multi-OMAP build, an array is created
to hold the register addresses with it's offset.

This patch was submitted, reviewed and acked on mailing list
already. For more details refer below link
http://www.mail-archive.com/linux-i2c@vger.kernel.org/msg02281.html

This updated verion has a depedancy on "Add support for 16-bit registers"
posted on linux-omap. Below is the patch-works link for the same

http://patchwork.kernel.org/patch/72295/Signed-off-by: Syed Rafiuddin <rafiuddin.syed@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Reviewed-by: Paul Walmsley <paul@pwsan.com>
Cc: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

A smbus quick transfer has no data after the address byte.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

i2c event of next read/write byte may trigger before current int state
is cleared in the interrupt handler. So, this should be done at the
beginning of interrupt handler to avoid losing new i2c events.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

Add some debug() code to decode the error register.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

There isn't much point in managing our own custom timeout timer when the
completion interface already includes support for it.  This makes the
resulting code much simpler and robust.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

The S3C I2C controller indicates completion of I2C transfers before
the bus has a stop condition on it. In order to ensure that we do not
attempt to start a new transfer before the bus is idle the driver
currently inserts a 1ms delay. This is vastly larger than is generally
required and has a visible effect on performance under load, such as
when bringing up audio CODECs or reading back status information with
non-bulk I2C reads.

Replace the sleep with a spin on the IIC status register for up to 1ms.
This will busy wait but testing on my SMDK6410 system indicates that
the overwhelming majority of transactions complete on the first spin,
with maximum latencies of less than 10 spins so the absolute overhead
of busy waiting should be at worst comprable to msleep(), and the
overall system performance is dramatically improved.

The main risk is poor interaction with multimaster systems where
we may miss the bus going idle before the next transaction. Defend
against this by falling back to the original 1ms delay after 20 spins.

The overall effect in my testing is an approximately 20% improvement
in kernel startup time.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

* 'msm-core' of git://codeaurora.org/quic/kernel/dwalker/linux-msm: (72 commits)
  msm: 7x30 Kconfig and makefile changes
  msm: clock support for the MSM7x30 CPU.
  msm: physical offset for MSM7X30
  msm: io: add io support for 7x30
  msm: Add extern for 7x30 clock list.
  msm: dma: add 7x30 security domain abstraction
  msm: update basic board layout for MSM7x30
  msm: add devices-msm7x30.c
  msm: add msm_iomap-7x30.h for MSM7x30 support
  msm: irqs: add irqs-7x30.h for MSM7x30 support
  msm: 8x50 Kconfig changes
  msm: physical offset for QSD8x50
  msm: io: add io support for 8x50
  msm: add extern for 8x50 clock list.
  msm: add devices-qsd8x50.c
  msm: update basic board layout for QSD8x50
  msm: add msm_iomap-8x50.h for QSD8x50 support
  msm: irqs: add irqs-8x50.h for QSD8x50 support
  msm: timer: allow MSM_DGT_BASE to be overriden
  msm: add Qualcomm 7x30 interrupt controller driver.
  ...