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path: root/drivers/i2c
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2011-11-30i2c: tegra: Add more debug message in failure caseLaxman Dewangan
Added some more debug message to print during i2c transfer failure to get more information from log. This help to understand/analyse the issue quickly. Original-Change-Id: Ie957b9f2ad737da210722f2ea6f18da9a7b76813 Reviewed-on: http://git-master/r/30011 Reviewed-by: Varun Colbert <vcolbert@nvidia.com> Tested-by: Varun Colbert <vcolbert@nvidia.com> Rebase-Id: Rc40314cf7d257db51d98fba2dc94c8398fb2b8a9
2011-11-30i2c: clock: tegra: Removing unnecessary clock entryLaxman Dewangan
The clock table have two different entry for a given i2c controller. The second entry is not required and hence removing from table. Also removing the reference of this entry from driver. Original-Change-Id: Iab5f79bf5d1fea9363ef524258fb3ec262547691 Reviewed-on: http://git-master/r/29629 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com> Reviewed-by: Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Narendra Damahe <ndamahe@nvidia.com> Rebase-Id: R0265f605ec00f464eb9ec8d5ffe840a642592fab
2011-11-30Update copyrightsScott Williams
Original-Change-Id: I2ffeaf6f8dfeb279b40ca6f69f6c9157401a746a Rebase-Id: R84f13e4b66ba9711fcb92850fd5e800ef3248a3f
2011-11-30i2c: tegra: i2c-slave: Fixing initialization seqLaxman Dewangan
Following are changes: - Using the sysinit_call to initialize the driver. - Using device from master adapter for slave adpter. Original-Change-Id: I4dd0725694008a6aaee9a1d3a92d370a5c46de31 Reviewed-on: http://git-master/r/19249 Reviewed-by: Krishna Thota <kthota@nvidia.com> Tested-by: Krishna Thota <kthota@nvidia.com> Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Original-Change-Id: I62ba2e474d15764eccb2174444b194502e771307 Rebase-Id: Re845b3bac0f08ac25d0aa330acf0ee267ea8fcd4
2011-11-30i2c: tegra: suppporting clock enable always through platform data.Laxman Dewangan
To make the response fast from i2c, providing the option to enable clock of i2c always through platform data. Original-Change-Id: I89c9156fc97f92a45ce72626ccd77920e02ca356 Reviewed-on: http://git-master/r/19880 Tested-by: Pradeep Goudagunta <pgoudagunta@nvidia.com> Reviewed-by: Ramachandrudu Kandhala <rkandhala@nvidia.com> Original-Change-Id: Ifaab9d7e052fb377abe27afdeb5c9cb4d19a6320 Rebase-Id: R15e2cfa9080024d9e2bbc8d966f5145766ee9e1a
2011-11-30[ARM] tegra: Implementing i2c slave driverLaxman Dewangan
Implementing i2c slave driver in the linux i2c framework. This driver will support the slave functionality on tegra i2c controller. Original-Change-Id: Ia56e3299605ab8705f2f82bf512195e7736214b3 Reviewed-on: http://git-master/r/14208 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Alok Chauhan <alokc@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I01b742f2c9477f0df476330e49163eda43a8d14f Rebase-Id: R0127682848aa0cf230cc63b29e8c2c712c4e28f3
2011-11-30[ARM]tegra:i2c: Adding i2c slave support apis.Laxman Dewangan
To support the i2c slave functionality in the kernel, adding the framework so that chip specific slave driver can be plugged in. Adding slave adapter and alogithms in framework so that slave bus driver can register chip specific driver. Original-Change-Id: Ie002dbd3b021f70814b455471e66a5da378ab3e9 Reviewed-on: http://git-master/r/14206 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Alok Chauhan <alokc@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I92b6bc4f3953a9edc7f9414a65b69005d2bbf8db Rebase-Id: R13abe740fa88a76747dcbcd42ffc9f74a504f7c5
2011-11-30[ARM] tegra i2c: Removing unnecessarily write on INT_STATUSAlok Chauhan
Removing the unnecessarily write in the interrupt status register to avoid controller status misbehave. bug 773262 Original-Change-Id: I15e2f3d5b377f44df5aae0fce9b55b2f3e7232b9 Reviewed-on: http://git-master/r/14223 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Alok Chauhan <alokc@nvidia.com> Tested-by: Alok Chauhan <alokc@nvidia.com> Reviewed-by: Scott Williams <scwilliams@nvidia.com> Original-Change-Id: I17d9b90b91d54248bb23f7426faececd856403ea Rebase-Id: R604a43169dbe3363cb9cb6d11c381aeeb502ea01
2011-11-30i2c: buses: tegra: assign unused address to i2c slaveNitin Kumbhar
New i2c slave should be configured with a non-zero i2c address. Configure i2c slave with an i2c address assigned by platform data for an i2c dev. BUG 788286 Reviewed-on: http://git-master/r/25100 (cherry picked from commit e6e0610c72ffce3b734e079faf88fad3f0468d07) Original-Change-Id: I440aa2cc72007d2835b2027c0b26089d0aad9263 Reviewed-on: http://git-master/r/25223 Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Tested-by: Bharat Nihalani <bnihalani@nvidia.com> Rebase-Id: Rfac0b98a3aad6f7df4badd5554a63856212a580d
2011-11-30i2c: buses: tegra: use new cam_i2c slave controllerNitin Kumbhar
Use new cam_i2c slave (i2c2) instead of the legacy one. With old i2c slave controller, occasionally it generates spurious slave interrupts causing disruptions in i2c transfers. BUG 790315 Reviewed-on: http://git-master/r/24287 (cherry picked from commit 001805e9036b647e9a1220f2b50e8973ec28e917) Original-Change-Id: Icd5310286de0338a4458c26a8d491bcded032b03 Reviewed-on: http://git-master/r/24294 Tested-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Rebase-Id: R547c7338528aacebfb6b5258449dba31897552fc
2011-11-30i2c: buses: tegra: use new i2c slave controllerNitin Kumbhar
tegra2 has an improved new i2c slave controller. This should be used instead of the old i2c slave controller. With old i2c slave controller, occasionally it generates spurious slave interrupts causing disruptions in master i2c transfers. BUG 788286 BUG 804545 Reviewed-on: http://git-master/r/24107 (cherry picked from commit 64a6e1d5a555be1c330de80cfb477563ae061452) Original-Change-Id: Id5d5bd809df4a583a743d84a91aecbb78889a3c6 Reviewed-on: http://git-master/r/24246 Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Tested-by: Bharat Nihalani <bnihalani@nvidia.com> Rebase-Id: Re4b74bb7df316c939cb619da87d2f6fd1ccb35dc
2011-11-30i2c-tegra: Using suspend_noirq()/resume_noirq() for suspend/resume.Jubeom Kim
I2C driver needs to be suspended late and resumed early than other drivers. So, I2C driver uses the suspend_noirq/resume_noirq callbacks of struct dev_pm_ops for early/late power management system. Original-Change-Id: Ie2f453b96fb9ab9b16cafec79644fe5d3b982dd3 Reviewed-on: http://git-master/r/23347 Tested-by: Jubeom Kim <jubeomk@nvidia.com> Reviewed-by: Jinyoung Park <jinyoungp@nvidia.com> Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> Reviewed-by: Mayuresh Kulkarni <mkulkarni@nvidia.com> Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Rebase-Id: R1126fb1683ac4f9138763e7981a0e36769f14738
2011-11-30i2c-tegra: Retry transfer when unexpected status is detectedJin Park
Sometimes unexpected status like I2C busy status, Tx FIFO interrupted and wait on Rx data etc is seen. Add a code to detect such conditions and return -EAGAIN from driver. This will cause the i2c-core to retry the transmission as per the retry count and time-out specified by the platform data of the adapter. Bug ID: 777455 Original-Change-Id: Iac5971bca4d760d93cd2ed147f78fc2807315b4e Signed-off-by: Jin Park <jinyoungp@nvidia.com> Reviewed-on: http://git-master/r/16212 Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com> Rebase-Id: R7c56bb575b1e7be19d1916124cdd86618c2f9c42
2011-11-30ARM: tegra: camera: add I2C_FUNC_SMBUS_BYTE required for pca953xPritesh Raithatha
Original-Change-Id: I4ce92b4f7784b01fc68f454a1768ff7dc5b1b51a Reviewed-on: http://git-master/r/11338 Reviewed-by: Mayuresh Kulkarni <mkulkarni@nvidia.com> Tested-by: Pritesh Raithatha <praithatha@nvidia.com> Reviewed-by: Peter Zu <pzu@nvidia.com> Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com> Original-Rebase-Id: Rbae98a74cc8aad60cb8424f91ee4d6147c5d3587 This was partially upstreamed, now it's just adding dev_warn'ings.
2011-11-30i2c: busses: i2c-tegra: Fix multi-busColin Cross
Change-Id: I504d3d8833406db68cc0045d1dc37278d9ee8708 Signed-off-by: Colin Cross <ccross@android.com>
2011-11-30Fix i2c buildColin Cross
Change-Id: I558577e86654bc9a5a2cbfeeeb8055454ab8f328
2011-11-30i2c-tegra: add support for virtual busses with dynamic pinmuxingGary King
this adds support for dynamically reprogramming the I2C controller's pin mux on transaction boundaries to enable one controller to be registered as multiple I2C bus adapters with the kernel. this allows platform designers an additional tool to resolve clock rate, I/O voltage and electrical loading restrictions between the platform's peripherals. the i2c-tegra platform data is extended to support this; platforms which use this feature should pass in the number of busses which should be created for each controller, the starting adapter number to use and the clock rate and pin mux for each virtual bus. Change-Id: I57a96deb7b7b793222ec3f8cc3a941917a023609 Signed-off-by: Gary King <gking@nvidia.com>
2011-09-07i2c-tegra: fix possible race condition after txDoug Anderson
In tegra_i2c_fill_tx_fifo, once we have finished pushing all the bytes to the I2C hardware controller, the interrupt might happen before we have updated i2c_dev->msg_buf_remaining at the end of the function. Then, in tegra_i2c_isr, we will call again tegra_i2c_fill_tx_fifo triggering weird behaviour. This has been shown to happen under real conditions. Signed-off-by: Doug Anderson <dianders@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org> Acked-by: Rhyland Klein <rklein@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-09-07i2c-tegra: add I2C_FUNC_SMBUS_EMULMike Rapoport
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-09-07i2c-tegra: Add of_match_tableJohn Bonesio
This patch was intended to be part of 7ca2d1a105a239e300b937e9c41a10a4bd08f569 "i2c: Tegra: Add DeviceTree support". However, an early version of that patch, which was missing a chunk, was applied to next-i2c. This change is that missing chunk. Signed-off-by: John Bonesio <bones@secretlab.ca> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-09-07i2c-pxa2xx: return proper error code in ce4100_i2c_probe error pathsAxel Lin
Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-08-24i2c-nomadik: fix kerneldoc warningLinus Walleij
There was a missing struct item in the kerneldoc, add it and fix another pretty-printing formatting issue with a missing space. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-08-23Revert "i2c-omap: fix static suspend vs. runtime suspend"Kevin Hilman
This reverts commit adf6e07922255937c8bfeea777d19502b4c9a2be. Remove system PM methods which can race with runtime PM methods. Also, as of v3.1, the PM domain level code for OMAP handles device power state transistions automatically for devices, so drivers no longer need to specifically call the bus/pm_domain methods themselves. Signed-off-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-08-23i2c-nomadik: Do not use _interruptible_ variant callsrinidhi kasagar
If there is a signal pending and wait_for_completion_interruptible_timeout exited because of the -ERESTARTSYS error we are unable to send any more i2c messages. So, deprecate this _interruptible_ variant call. Signed-off-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-27i2c-eg20t : Fix the issue of Combined R/W transfer modeTomoya MORINAGA
issue-1 In case combined transfer mode fails halfway, the processing must be stopped halfway. However currently, the processing is continued. This patch breaks the processing. issue-2 Currently, pch_i2c_xfer returns read/write size at that time. However pch_i2c_xfer must return the number of messages to be read/written. This patch modifies correctly. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-27i2c-eg20t : Support Combined R/W transfer modeTomoya MORINAGA
Currently, Combined R/W transfer mode is not supported. This patch enables Combined R/W transfer mode. Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-27i2c: Tegra: Add DeviceTree supportJohn Bonesio
This patch modifies the tegra i2c driver so that it can be initiailized using the device tree along with the devices connected to the i2c bus. Signed-off-by: John Bonesio <bones@secretlab.ca> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: OIof Johansson <olof@lixom.net> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-07-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) fs: Merge split strings treewide: fix potentially dangerous trailing ';' in #defined values/expressions uwb: Fix misspelling of neighbourhood in comment net, netfilter: Remove redundant goto in ebt_ulog_packet trivial: don't touch files that are removed in the staging tree lib/vsprintf: replace link to Draft by final RFC number doc: Kconfig: `to be' -> `be' doc: Kconfig: Typo: square -> squared doc: Konfig: Documentation/power/{pm => apm-acpi}.txt drivers/net: static should be at beginning of declaration drivers/media: static should be at beginning of declaration drivers/i2c: static should be at beginning of declaration XTENSA: static should be at beginning of declaration SH: static should be at beginning of declaration MIPS: static should be at beginning of declaration ARM: static should be at beginning of declaration rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check Update my e-mail address PCIe ASPM: forcedly -> forcibly gma500: push through device driver tree ... Fix up trivial conflicts: - arch/arm/mach-ep93xx/dma-m2p.c (deleted) - drivers/gpio/gpio-ep93xx.c (renamed and context nearby) - drivers/net/r8169.c (just context changes)
2011-07-25i2c: Allow i2c_add_numbered_adapter() to assign a bus idGrant Likely
Currently, if an i2c bus driver supports both static and dynamic bus ids, it needs to choose between calling i2c_add_numbered_adapter() and i2c_add_adapter(). This patch makes i2c_add_numbered_adapter() redirect to i2c_add_adapter() if the requested bus id is -1. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-07-25i2c-ali1535: Fix style issuesLABBE Corentin
This is a fix-style patch for i2c-ali1535 (issues reported by checkpatch.pl.) Signed-off-by: LABBE Corentin <corentin.labbe@geomatys.fr> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-07-11doc: Kconfig: Typo: square -> squaredMichael Witten
Signed-off-by: Michael Witten <mfwitten@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-07-11Merge branch 'master' into for-nextJiri Kosina
Sync with Linus' tree to be able to apply pending patches that are based on newer code already present upstream.
2011-07-11drivers/i2c: static should be at beginning of declarationJesper Juhl
Make sure that the 'static' keywork is at the beginning of declaration for drivers/i2c/busses/i2c-omap.c This gets rid of warnings like warning: ‘static’ is not at beginning of declaration when building with -Wold-style-declaration (and/or -Wextra which also enables it). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-07-07Merge branch 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linuxLinus Torvalds
* 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux: i2c-bfin-twi: abort transfer is MEM bit is reset unexpectedly i2c-s3c2410: Remove useless break code i2c-s3c2410: Fix typo 'i2s' -> 'i2c' i2c: tegra: Assign unused slave address
2011-06-29i2c/pca954x: Initialize the mux to disconnected statePetri Gynther
pca954x power-on default is channel 0 connected. If multiple pca954x muxes are connected to the same physical I2C bus, the parent bus will see channel 0 devices behind both muxes by default. This is bad. Scenario: -- pca954x @ 0x70 -- ch 0 (I2C-bus-101) -- EEPROM @ 0x50 | I2C-bus-1 --- | -- pca954x @ 0x71 -- ch 0 (I2C-bus-111) -- EEPROM @ 0x50 1. Load I2C bus driver: creates I2C-bus-1 2. Load pca954x driver: creates virtual I2C-bus-101 and I2C-bus-111 3. Load eeprom driver 4. Try to read EEPROM @ 0x50 on I2C-bus-101. The transaction will also bleed onto I2C-bus-111 because pca954x @ 0x71 channel 0 is connected by default. Fix: Initialize pca954x to disconnected state in pca954x_probe() Signed-off-by: Petri Gynther <pgynther@google.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@kernel.org
2011-06-29i2c-taos-evm: Fix log messagesJean Delvare
* Print all error and information messages even when debugging is disabled. * Don't use adapter device to log messages before it is ready. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@kernel.org
2011-06-27Merge branches 'for-30-rc4/i2c-bfin', 'for-30-rc4/i2c-omap', ↵Ben Dooks
'for-30-rc4/i2c-s3c' and 'for-30-rc4/i2c-tegra' into for-30-rc5/all-i2c
2011-06-27i2c-bfin-twi: abort transfer is MEM bit is reset unexpectedlySonic Zhang
Sometimes, the first I2C transmit interrupt is not serviced in time (like when higher priority interrupts take too long). Since the RESTART bit is not set before the next I2C clock, when the TWI handler is finally called, the I2C session is aborted (MEM bit is reset) and both SMITSERV and MCOMP int status bits are set. So when this happens, abort the transfer. Reported-by: Isabelle Leonardi <i.leonardi@detracom.fr> 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>
2011-06-27i2c-s3c2410: Remove useless break codeJonghwan Choi
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-06-27i2c-s3c2410: Fix typo 'i2s' -> 'i2c'Huisung Kang
Signed-off-by: Huisung Kang <hs1218.kang@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-06-27i2c: tegra: Assign unused slave addressStephen Warren
On Tegra, we should always use the "new" I2C slave controller, to avoid issues with the old controller. This was implemented in commit 65a1a0a "i2c: tegra: Enable new slave mode." There is currently no driver for the Tegra I2C slave controller upstream. Additionally, the controller cannot be completely disabled. Instead, we need to: a) Set I2C_SL_CNFG_NACK to make the controller automatically NACK any incoming transactions. b) The controller's definition of NACK isn't identical to the I2C protocol's definition. Specifically, it will perform a standard NACK, but *also* continue to hold the clock line low in expectation of receiving more data. This can hang the bus, or at least cause transaction timeouts, if something starts a transaction that matches the controller's slave address. Since the default address is 0x00, the general call address, this does occur in practice. To avoid this, we explicitly program a slave address that is reserved for future expansion. For current boards, this guarantees the address will never be used. If a future board ever needs to use this address, we can add platform data to determine a board-specific safe address. 0xfc is picked by this patch. This patch is based on a change previously posted by: Wei Ni <wni@nvidia.com> http://www.spinics.net/lists/linux-i2c/msg05437.html In turned based on internal changes by: Bharat Nihalani <bnihalani@nvidia.com> A semantically equivalent change has been contained in the various ChromeOS kernels for a while. I tested this change on top of 3.0-rc2 on Harmony, and interacted with the WM8903 I2C-based audio codec. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-06-24treewide: transciever/transceiver spelling fixesJoe Perches
Just tyops. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-05-26mfd: Use mfd cell platform_data for timberdale cells platform bitsSamuel Ortiz
With the addition of a device platform mfd_cell pointer, MFD drivers can go back to passing platform data back to their sub drivers. This allows for an mfd_cell->mfd_data removal and thus keep the sub drivers MFD agnostic. This is mostly needed for non MFD aware sub drivers. Acked-by: Richard Röjfors <richard.rojfors@pelagicore.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-05-24Merge branch 'for-linus/2640/i2c' of git://git.fluff.org/bjdooks/linuxLinus Torvalds
* 'for-linus/2640/i2c' of git://git.fluff.org/bjdooks/linux: (21 commits) mach-ux500: set proper I2C platform data from MOP500s i2c-nomadik: break out single messsage transmission i2c-nomadik: reset the hw after status check i2c-nomadik: remove the unnecessary delay i2c-nomadik: change the TX and RX threshold i2c-nomadik: add code to retry on timeout failure i2c-nomadik: use pm_runtime API i2c-nomadik: print abort cause only on abort tag i2c-nomadik: correct adapter timeout initialization i2c-nomadik: remove the redundant error message i2c-nomadik: corrrect returned error numbers i2c-nomadik: fix speed enumerator i2c-nomadik: make i2c timeout specific per i2c bus i2c-nomadik: add regulator support i2c: i2c-sh_mobile bus speed platform data V2 i2c: i2c-sh_mobile clock string removal i2c-eg20t: Support new device ML7223 IOH i2c: tegra: Add de-bounce cycles. i2c: tegra: fix repeated start handling i2c: tegra: recover from spurious interrupt storm ...
2011-05-25Merge branches 'for-2639/i2c-eg20t', 'for-2639/i2c-shmobile', ↵Ben Dooks
'for-2639/i2c-tegra' and 'for-2639/i2c-nomadik2' into for-linus/2640/i2c
2011-05-25i2c-nomadik: break out single messsage transmissionLinus Walleij
Reduce code size in the message transfer function by factoring out a single-message transfer function. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25i2c-nomadik: reset the hw after status checkVirupax Sadashivpetimath
In case of I2C timeout, reset the HW only after the HW status is read, otherwise the staus will be lost. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25i2c-nomadik: remove the unnecessary delayVirupax Sadashivpetimath
The delay in the driver seems to be not needed, so remove it. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Markus Grape <markus.grape@stericsson.com> Tested-by: Per Persson <per.xb.persson@stericsson.com> Tested-by: Chethan Krishna N <chethan.krishna@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25i2c-nomadik: change the TX and RX thresholdVirupax Sadashivpetimath
1) Increase RX FIFO threshold so that there is a reduction in the number of interrupts handled to complete a transaction. 2) Fill TX FIFO in the write function. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2011-05-25i2c-nomadik: add code to retry on timeout failureVirupax Sadashivpetimath
It is seen that i2c-nomadik controller randomly stops generating the interrupts leading to a i2c timeout. As a workaround to this problem, add retries to the on going transfer on failure. Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-25 08:13:47 +0000