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path: root/drivers/i2c/busses/i2c-sh_mobile.c
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2021-05-25i2c: sh_mobile: Use new clock calculation formulas for RZ/G2EGeert Uytterhoeven
When switching the Gen3 SoCs to the new clock calculation formulas, the match entry for RZ/G2E added in commit 51243b73455f2d12 ("i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)") was forgotten. Fixes: e8a27567509b2439 ("i2c: sh_mobile: use new clock calculation formulas for Gen3") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-12-09i2c: sh_mobile: Mark adapter suspended during suspendGeert Uytterhoeven
When a driver tries to send an I2C message while the adapter is suspended, this typically fails with: i2c-sh_mobile e60b0000.i2c: Transfer request timed out Avoid accessing the adapter while it is suspended by marking it suspended during suspend. This allows the I2C core to catch this, and print a warning: WARNING: CPU: 1 PID: 13 at drivers/i2c/i2c-core.h:54 __i2c_transfer+0x4a4/0x4e4 i2c i2c-6: Transfer while suspended Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-11-06i2c: sh_mobile: implement atomic transfersUlrich Hecht
Implements atomic transfers to fix reboot/shutdown on r8a7790 Lager and similar boards. Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> [wsa: some whitespace fixing] Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-07-04i2c: Use separate MODULE_AUTHOR() statements for multiple authorsJarkko Nikula
Modules with multiple authors should use multiple MODULE_AUTHOR() statements according to comment in include/linux/module.h. Split the i2c modules with multiple authors to use multiple MODULE_AUTHOR() statements. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-05-29i2c: sh_mobile: simplify code and remove false compilation warningViresh Kumar
This currently generates a warning: drivers/i2c/busses/i2c-sh_mobile.c: In function 'sh_mobile_i2c_isr': drivers/i2c/busses/i2c-sh_mobile.c:399:26: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized] Though the code looks okay and shouldn't ever use the variable uninitialized. Fix the warning by moving the code around and getting rid of 'data'. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> [wsa: minor updates to commit message] Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-03-24i2c: drivers: Use generic definitions for bus frequenciesAndy Shevchenko
Since we have generic definitions for bus frequencies, let's use them. Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Robert Richter <rrichter@marvell.com> Reviewed-by: Thor Thayer <thor.thayer@linux.intel.com> Acked-by: Elie Morisse <syniurge@gmail.com> Acked-by: Nehal Shah <nehal-bakulchandra.shah@amd.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Acked-by: Scott Branden <scott.branden@broadcom.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Oleksij Rempel <o.rempel@pengutronix.de> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Baolin Wang <baolin.wang7@gmail.com> Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-11-14i2c: sh_mobile: Use dma_request_chan() directly for channel requestPeter Ujfalusi
dma_request_slave_channel_reason() is: dma_request_chan(dev, name) Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Reviewed-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-02-08i2c: sh_mobile: use new clock calculation formulas for Gen2Wolfram Sang
We measured the clock on a Lager and an Ebisu board. The new formula gives better results for both. So after Gen3, switch to this formula for all Gen2 SoCs. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-02-08i2c: sh_mobile: use new clock calculation formulas for Gen3Wolfram Sang
We could finally measure the clock on an Ebisu board. The new formula gives way better results, i.e. 100kHz instead of 106kHz and 400kHz instead of 387kHz. Switch to these formulas for all Gen3 SoCs. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-02-08i2c: sh_mobile: sort compatible entriesWolfram Sang
Makes it easier to add new ones. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-01-23i2c: sh_mobile: update copyright and commentsWolfram Sang
Update copyright years and add Renesas to it. Add/update comments to make driver easier to understand. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-01-23i2c: sh_mobile: refactor rx isrWolfram Sang
Remove the do_while loop which was just there to have an easy exit with "break;" and replace it with if-else-blocks which should make the state machine clearer. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-01-23i2c: sh_mobile: replace break; with if-blockWolfram Sang
In preparation to remove the do-while-loop. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-01-23i2c: sh_mobile: remove is_first_byte functionWolfram Sang
All state machines deal with pd->pos values. This helper function is an exception and makes it only more confusing. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-01-23i2c: sh_mobile: drop 'data' argument from i2c_op functionWolfram Sang
It is clear that we always send the address in TX_FIRST and data in TX. No need to pass it from the caller. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-01-23i2c: sh_mobile: remove get_data functionWolfram Sang
It makes the code much easier comprehensible to explicitly code that the first byte will be client address and all the following bytes are the actual data. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-01-23i2c: sh_mobile: simplify sending address for RXWolfram Sang
pd->pos won't be smaller than -1, so we can simplify the logic. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-12-17i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)Fabrizio Castro
Similarly to R-Car E3, RZ/G2E doesn't come with automatic transmission registers, as such it is not considered compatible with the existing fallback bindings. Add SoC specific binding compatibility to allow for later support for automatic transmission. Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-11-27i2c: sh_mobile: add support for r8a77990 (R-Car E3)Simon Horman
Add support for the IIC code for the r8a77990 (R-Car E3). It is not considered compatible with existing fallback bindings due to the documented absence of automatic transmission registers. These registers are currently not used by the driver and thus the provides the same behaviour for "renesas,iic-r8a77990" and "renesas,rcar-gen3-iic". The point of declaring incompatibility is to allow for automatic transmission register support to be added to "renesas,iic-r8a77990" and "renesas,rcar-gen3-iic" in future. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-10-29i2c: sh_mobile: Remove dummy runtime PM callbacksJarkko Nikula
Platform drivers don't need dummy runtime PM callbacks that just return success and non-NULL pm pointer in their struct device_driver in order to have runtime PM happening. This has changed since following commits: 05aa55dddb9e ("PM / Runtime: Lenient generic runtime pm callbacks") 543f2503a956 ("PM / platform_bus: Allow runtime PM by default") 8b313a38ecff ("PM / Platform: Use generic runtime PM callbacks directly") Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-08-30i2c: sh_mobile: fix leak when using DMA bounce bufferWolfram Sang
We only freed the bounce buffer after successful DMA, missing the cases where DMA setup may have gone wrong. Use a better location which always gets called after each message and use 'stop_after_dma' as a flag for a successful transfer. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-08-30i2c: sh_mobile: define start_ch() void as it only returns 0 anyhowWolfram Sang
After various refactoring over the years, start_ch() doesn't return errno anymore, so make the function return void. This saves the error handling when calling it which in turn eases cleanup of resources of a future patch. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-08-30i2c: refactor function to release a DMA safe bufferWolfram Sang
a) rename to 'put' instead of 'release' to match 'get' when obtaining the buffer b) change the argument order to have the buffer as first argument c) add a new argument telling the function if the message was transferred. This allows the function to be used also in cases where setting up DMA failed, so the buffer needs to be freed without syncing to the message buffer. Also convert the only user. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-08-24i2c: use SPDX identifier for Renesas driversWolfram Sang
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-08-04i2c: sh_mobile: use core to detect 'no zero length read' quirkWolfram Sang
And don't reimplement in the driver. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-05-08i2c: busses: remove superfluous ignoring of children for RPMWolfram Sang
These days, the I2C core ensures that the embedded adapter device ignores the PM states of its children already. Because the adapter device is an opaque logical device, there is no need for drivers to repeat that again. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-01-15i2c: sh_mobile: let r8a7790 (R-Car H2) use the new formulaWolfram Sang
Make use of the new formula for more precise bus frequencies. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-01-15i2c: sh_mobile: add new frequency calculation for later SoCWolfram Sang
The formula to generate the desired bus speeds has changed a little over time. Implement the new formula and allow drivers to opt-in by changing to this new config set. Ensure in probe that we don't divide by zero. The returned values on a R-Car H2 (r8a7790/Lager board) match the suggested values in the datasheet. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-01-15i2c: sh_mobile: add helper to check frequency calculationsWolfram Sang
Because we will add a second formula soon, put the sanity checks for the computed results into a separate function. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-01-15i2c: sh_mobile: let RuntimePM do the clock handlingWolfram Sang
Start RuntimePM a bit earlier, so we can use it to enable the clock during probe for frequency calculations. Make sure it is enabled before calling setup(). Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-01-15i2c: sh_mobile: require setup callbackWolfram Sang
Require the setup callback and move the frequency calculation into it. This is in preparation for supporting multiple formulas. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-01-15i2c: sh_mobile: allow setup callback to return errnoWolfram Sang
The setup callback will be more generic and, thus, need to be able to return error codes. Change the return type to 'int' for that. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-01-15i2c: sh_mobile: move type detection upwardsWolfram Sang
For refactoring reasons, we will need this information before the setup callback. Also, simplify the comment to a oneliner. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-12-03i2c: sh_mobile: use core helper to decide when to use DMAWolfram Sang
This ensures that we fall back to PIO if the message length is too small for DMA being useful. Otherwise, we use DMA. A bounce buffer might be applied by the helper if the original message buffer is not DMA safe. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: make sure to not accidently trigger STOPWolfram Sang
The datasheet was a bit vague, but after consultation with HW designers, we came to the conclusion that we should set the SCP bit always when dealing only with the ICE bit. A set SCP bit is ignored, and thus fine, a cleared one may trigger STOP on the bus. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: send STOP according to datasheetWolfram Sang
We initiate STOP (or REP_START) on the second last WAIT interrupt currently. This works fine but is not according to the datasheet which says to do it on the last WAIT interrupt. This also simplifies the code quite a lot, so let's do it. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: avoid unnecessary register readWolfram Sang
There is no data when the first WAIT interrupt arrives. No need to read something then. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: let RuntimePM do the clock handlingWolfram Sang
No need to do it manually. Reported-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: shorten exit of xfer routineWolfram Sang
We can use the ternary operator for easier reading. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: use direct writes when accessing ICE bitWolfram Sang
ICE bit is for resetting the module. Other bits don't matter then, so we don't need to use the iic_set_clr() function but can use iic_wr(). Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: manually "inline" two short functionsWolfram Sang
Those two functions are very short and only called once. The code becomes easier to understand if the code is directly put into the main xfer function. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: remove redundant deinitializationWolfram Sang
No need to clear the interrupt registers because right after that we disable the IP core which will reload registers with their initial values anyhow. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-11-27i2c: sh_mobile: remove redundant initializationWolfram Sang
Following the documentation, we initialize the HW before each START in start_ch(). No need to do the same in activate_ch(). Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-10-17i2c: sh_mobile: Use of_device_get_match_data() helperGeert Uytterhoeven
Use the of_device_get_match_data() helper instead of open coding. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-08-17i2c: sh_mobile: avoid unused ret variableEugeniu Rosca
Fix smatch warning: drivers/i2c/busses/i2c-sh_mobile.c:564 \ sh_mobile_i2c_request_dma_chan() warn: unused return: ret = PTR_ERR() Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-02i2c: sh_mobile: drop needless check for of_nodeWolfram Sang
After removal of platform_data support, we can simplify OF handling. of_match_device() evaluates to NULL if !CONFIG_OF or if there is no node pointer for that device, so we can remove the check for the node ptr. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-06-02i2c: sh_mobile: remove platform_dataWolfram Sang
No platform currently upstream makes use of this platform_data anymore. The ones that did are converted to DT meanwhile. So, remove it. The old platforms likely don't have the 'clks_per_cnt' feature, otherwise it would have been implemented by now. And in the unlikely case they need to setup a different bus speed, we should rather go for a generic i2c platform data just for that. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2017-02-09i2c: busses: constify i2c_algorithm structuresBhumika Goyal
Declare i2c_algorithm structures as const as they are only stored in the algo field of an i2c_adapter structure. This field is of type const, so i2c_algorithm structures having this property can be made const too. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> for Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-12-11i2c: sh_mobile: Add per-Generation fallback bindingsSimon Horman
Add per-Generation fallback bindings for R-Car SoCs. This is in keeping with the compatibility string scheme is being adopted for drivers for Renesas SoCs. Also, improve readability by listing the rmobile fallback compatibility string after the more-specific compatibility strings they provide a fallback for. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-10-07Merge branch 'i2c/for-4.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "Here is the 4.9 pull request from I2C including: - centralized error messages when registering to the core - improved lockdep annotations to prevent false positives - DT support for muxes, gates, and arbitrators - bus speeds can now be obtained from ACPI - i2c-octeon got refactored and now supports ThunderX SoCs, too - i2c-tegra and i2c-designware got a bigger bunch of updates - a couple of standard driver fixes and improvements" * 'i2c/for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (71 commits) i2c: axxia: disable clks in case of failure in probe i2c: octeon: thunderx: Limit register access retries i2c: uniphier-f: fix misdetection of incomplete STOP condition gpio: pca953x: variable 'id' was used twice i2c: i801: Add support for Kaby Lake PCH-H gpio: pca953x: fix an incorrect lockdep warning i2c: add a warning to i2c_adapter_depth() lockdep: make MAX_LOCKDEP_SUBCLASSES unconditionally visible i2c: export i2c_adapter_depth() i2c: rk3x: Fix variable 'min_total_ns' unused warning i2c: rk3x: Fix sparse warning i2c / ACPI: Do not touch an I2C device if it belongs to another adapter i2c: octeon: Fix high-level controller status check i2c: octeon: Avoid sending STOP during recovery i2c: octeon: Fix set SCL recovery function i2c: rcar: add support for r8a7796 (R-Car M3-W) i2c: imx: make bus recovery through pinctrl optional i2c: meson: add gxbb compatible string i2c: uniphier-f: set the adapter to master mode when probing i2c: uniphier-f: avoid WARN_ON() of clk_disable() in failure path ...
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