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* Merge branch 'i2c/for-4.13' of ↵Linus Torvalds2017-07-1229-2239/+4551
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "This pull request contains: - i2c core reorganization. One source file became too monolithic. It is now split up, yet we still have the same named object as the final output. This should ease maintenance. - new drivers: ZTE ZX2967 family, ASPEED 24XX/25XX - designware driver gained slave mode support - xgene-slimpro driver gained ACPI support - bigger overhaul for pca-platform driver - the algo-bit module now supports messages with enforced STOP - slightly bigger than usual set of driver updates and improvements and with much appreciated quality assurance from Andy Shevchenko" * 'i2c/for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (51 commits) i2c: Provide a stub for i2c_detect_slave_mode() i2c: designware: Let slave adapter support be optional i2c: designware: Make HW init functions static i2c: designware: fix spelling mistakes i2c: pca-platform: propagate error from i2c_pca_add_numbered_bus i2c: pca-platform: correctly set algo_data.reset_chip i2c: acpi: Do not create i2c-clients for LNXVIDEO ACPI devices i2c: designware: enable SLAVE in platform module i2c: designware: add SLAVE mode functions i2c: zx2967: drop COMPILE_TEST dependency i2c: zx2967: always use the same device when printing errors i2c: pca-platform: use dev_warn/dev_info instead of printk i2c: pca-platform: use device managed allocations i2c: pca-platform: add devicetree awareness i2c: pca-platform: switch to struct gpio_desc dt-bindings: add bindings for i2c-pca-platform i2c: cadance: fix ctrl/addr reg write order i2c: zx2967: add i2c controller driver for ZTE's zx2967 family dt: bindings: add documentation for zx2967 family i2c controller i2c: algo-bit: add support for I2C_M_STOP ...
| * i2c: designware: Let slave adapter support be optionalJarkko Nikula2017-07-042-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Only certain system configurations may use the I2C slave mode so let the support be optional. This allow reducing module size if needed: text data bss dec hex filename 10328 1336 16 11680 2da0 drivers/i2c/busses/i2c-designware-core.ko 7222 1136 8 8366 20ae drivers/i2c/busses/i2c-designware-core.ko Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Luis Oliveira <lolivei@synopsys.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: Make HW init functions staticJarkko Nikula2017-07-043-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | Recent i2c-designware slave support patches use master or slave HW init functions through the function pointer so we can declare them static. While at it, rename i2c_dw_init() as i2c_dw_init_master(). Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Luis Oliveira <lolivei@synopsys.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: fix spelling mistakesColin Ian King2017-07-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | Trivial fixes to spelling mistakes in dev_dbg message "STAUTS" -> "STATUS" "SLAVE_ACTTVITY" -> "SLAVE_ACTIVITY" Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: pca-platform: propagate error from i2c_pca_add_numbered_busChris Packham2017-07-041-3/+3
| | | | | | | | | | | | | | | | | | | | Rather than returning -ENODEV if i2c_pca_add_numbered_bus() fails, propagate the error to aid debugging. Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: pca-platform: correctly set algo_data.reset_chipChris Packham2017-07-041-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When device tree support was added the setting of algo_data.reset_chip was moved. There were two problems with this. The first being that i2c_pca_pf_resetchip was only used if platform data was provided. The second that it was unconditionally overridden with i2c_pca_pf_dummyreset. Ensure that however the reset gpio is defined the correct reset_chip function is used. Fixes: commit 4cc7229daa46 ("i2c: pca-platform: switch to struct gpio_desc") Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: acpi: Do not create i2c-clients for LNXVIDEO ACPI devicesHans de Goede2017-07-041-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPI video devices get tagged by the kernel with the custom LNXVIDEO HID so that normal pnp-id matching can be used and are handled by the acpi-video driver. Sometimes the ACPI nodes describing these contain a SERIAL_TYPE_I2C ACPI resource. Before this commit the presence of this resource would cause the i2c-core to create a /sys/bus/i2c/devices/i2c-LNXVIDEO:00 device for this with a modalias of: "i2c:LNXVIDEO:00". There is no i2c driver for this custom HID, the acpi-video driver binds directly to the ACPI device /sys/bus/acpi/devices/LNXVIDEO\:00 which has a modalias of "acpi:LNXVIDEO:" . Not only is the creation of an i2c-client for this undesirable, it is actually causing problems. This weird pseudo-resource claims an i2c speed of 100KHz and typically points to the i2c bus which is used by the touchscreen controller. Some touchscreen controllers only work properly at 400KHz, at 100KHz they cause errors like these: i2c_designware 80860F41:03: i2c_dw_handle_tx_abort: lost arbitration i2c_designware 80860F41:03: i2c_dw_handle_tx_abort: lost arbitration i2c_designware 80860F41:03: i2c_dw_handle_tx_abort: lost arbitration i2c_designware 80860F41:03: i2c_dw_handle_tx_abort: lost arbitration silead_ts i2c-MSSL1680:00: Registers clear error -11 This commit makes the i2c-core ignore LNXVIDEO compatible ACPI devices which has 2 positive results: 1) The bogus i2c-client for these is no longer created. 2) i2c_acpi_lookup_speed now ignores the 100KHz speed from the pseudo i2c-resouce and properly returns 400KHz as speed for the touchscreen i2c bus, fixing the touchscreen not working on various devies. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: enable SLAVE in platform moduleLuis Oliveira2017-06-272-5/+38
| | | | | | | | | | | | | | | | | | | | - Slave mode selected in platform module if the support is detected in the DT. Signed-off-by: Luis Oliveira <lolivei@synopsys.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: add SLAVE mode functionsLuis Oliveira2017-06-275-1/+418
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Changes in Kconfig to enable I2C_DESIGNWARE_SLAVE support - Slave functions added to core library file - Slave abort sources added to common source file - New driver: i2c-designware-slave added - Changes in the Makefile to compile the I2C_DESIGNWARE_SLAVE module when supported by the architecture. All the SLAVE flow is added but it is not enabled via platform driver. Signed-off-by: Luis Oliveira <lolivei@synopsys.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> [wsa: made a function static and one-lined a message] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: zx2967: drop COMPILE_TEST dependencyShawn Guo2017-06-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 0-DAY kernel test reports the following build issue on IA64 architecture with allmodconfig. drivers/i2c/busses/i2c-zx2967.c: In function 'zx2967_i2c_writesb': >> drivers/i2c/busses/i2c-zx2967.c:87:2: error: implicit declaration of function 'writesb' [-Werror=implicit-function-declaration] writesb(i2c->reg_base + reg, data, len); ^~~~~~~ drivers/i2c/busses/i2c-zx2967.c: In function 'zx2967_i2c_readsb': >> drivers/i2c/busses/i2c-zx2967.c:93:2: error: implicit declaration of function 'readsb' [-Werror=implicit-function-declaration] readsb(i2c->reg_base + reg, data, len); ^~~~~~ cc1: some warnings being treated as errors It's caused by that writesb/readsb are unavailable on IA64 architecture. Let's drop COMPILE_TEST dependency to avoid the build issue. Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: zx2967: always use the same device when printing errorsWolfram Sang2017-06-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | Let's always use the platform device for dev_* and not sometimes the adapter device as well. Also fix this checkpatch check: CHECK: Macro argument 'i2c' may be better as '(i2c)' to avoid precedence issues Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: pca-platform: use dev_warn/dev_info instead of printkChris Packham2017-06-271-3/+3
| | | | | | | | | | Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: pca-platform: use device managed allocationsChris Packham2017-06-271-47/+12
| | | | | | | | | | | | | | | | | | Switch to using the devm_ APIs and remove the now unnecessary error handling and most of the device removal code. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> [wsa: adapted error handling I added in previous patch] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: pca-platform: add devicetree awarenessChris Packham2017-06-271-0/+25
| | | | | | | | | | | | | | | | | | Allow devices that use this driver to be registered via a devicetree. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> [wsa: fixed leakage when registering GPIO failed] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: pca-platform: switch to struct gpio_descChris Packham2017-06-271-24/+19
| | | | | | | | | | | | | | | | Make use of struct gpio_desc which allows us to specify the active state of the reset pin. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: cadance: fix ctrl/addr reg write orderMatt Weber2017-06-231-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver was clearing the hold bit in the control register before writing to the address register which resulted in a stop condition being generated rather than a repeated start. This issue was only observed when a system was running much slower than a normal processor would execute. The IP data sheet mentions a ordering of writing to the address register before clearing the hold. Fixes: df8eb5691c4 ("i2c: Add driver for Cadence I2C controller") Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Paresh Chaudhary <paresh.chaudhary@rockwellcollins.com> Signed-off-by: Matthew Weber <matthew.weber@rockwellcollins.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: zx2967: add i2c controller driver for ZTE's zx2967 familyBaoyou Xie2017-06-233-0/+619
| | | | | | | | | | | | | | | | | | | | This patch adds i2c controller driver for ZTE's zx2967 family. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Jun Nie <jun.nie@linaro.org> Signed-off-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: algo-bit: add support for I2C_M_STOPJean Delvare2017-06-231-3/+10
| | | | | | | | | | | | | | | | | | | | Support for enforced STOPs will allow us to use SCCB compatible devices. Based on a preliminary patch by Wolfram Sang. Signed-off-by: Jean Delvare <jdelvare@suse.de> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: aspeed: added slave support for Aspeed I2C driverBrendan Higgins2017-06-231-0/+201
| | | | | | | | | | | | | | | | Added slave support for Aspeed I2C controller. Supports fourteen busses present in AST24XX and AST25XX BMC SoCs by Aspeed. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: aspeed: added driver for Aspeed I2CBrendan Higgins2017-06-233-0/+701
| | | | | | | | | | | | | | | | Added initial master support for Aspeed I2C controller. Supports fourteen busses present in AST24XX and AST25XX BMC SoCs by Aspeed. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rcar: document HW incapabilitiesWolfram Sang2017-06-231-1/+6
| | | | | | | | | | | | | | | | Add recent findings (IGNORE_NAK) and document in a bit more detail why the feature is not possible. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: emev2: Handle return value of clk_prepare_enableArvind Yadav2017-06-191-1/+3
| | | | | | | | | | | | | | clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: introducing I2C_SLAVE definitionsLuis Oliveira2017-06-191-2/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Definitions were added to core library - A example was added to designware-core.txt Documentation that shows how the slave can be setup using DTS SLAVE related definitions were added to the core of the controller. Signed-off-by: Luis Oliveira <lolivei@synopsys.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: MASTER mode as separated driverLuis Oliveira2017-06-196-368/+433
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - The functions related to I2C master mode of operation were transformed in a single driver. - Common definitions were moved to i2c-designware-core.h - The i2c-designware-core is now only a library file, the functions associated are in a source file called i2c-designware-common and are used by both i2c-designware-master and i2c-designware-slave. - To decrease noise in namespace common i2c_dw_*() functions are now using ops to keep them private. - Designware PCI driver had to be changed to match the previous ops functions implementation. Almost all of the "core" source is now part of the "master" source. The difference is the functions used by both modes and they are in the "common" source file. Signed-off-by: Luis Oliveira <lolivei@synopsys.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: refactoring of the i2c-designwareLuis Oliveira2017-06-192-35/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Factor out all _master() part of code from i2c-designware-core and i2c-designware-platdrv to separate functions. - Standardize all code related with MASTER mode. - I have to take off DW_IC_INTR_TX_EMPTY from DW_IC_INTR_DEFAULT_MASK because it is master specific. The purpose of this is to prepare the controller to have is I2C MASTER flow in a separate driver. To do this first all the functions/definitions related to the MASTER flow were identified. Signed-off-by: Luis Oliveira <lolivei@synopsys.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: designware: Cleaning and comment style fixes.Luis Oliveira2017-06-193-61/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The purpose of this commit is to fix some comments and styling in the existing code due to the need of reuse this code. What is being made here is: - Sorted the headers files - Corrected some comments style (capital letters, lowcase i2c) - Reverse tree in the variables declaration - Add/remove empty lines and tabs where needed - Fix of misspelled word "endianness" and "transferred" - Replaced the return variable "r" with the more standard "ret" The value of this, besides the rules of coding style, is because I will use this code after and it will make my future patch a lot bigger and complicated to review. The work here won't bring any additional work to backported fixes because is just style and reordering. Signed-off-by: Luis Oliveira <lolivei@synopsys.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: at91: Fix compilation warning.Arvind Yadav2017-06-191-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Replace '%d' by '%zu' to fix the following type of compilation warnings: drivers/i2c/busses/i2c-at91.c:277:2: warning: format ‘%d’ expects argument of type ‘int’, but argument 5 has type ‘size_t’ [-Wformat=] dev_dbg(dev->dev, "wrote 0x%x, to go %d\n", *dev->buf, dev->buf_len); ^ Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Tested-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: at91: Handle return value of clk_prepare_enableArvind Yadav2017-06-191-2/+6
| | | | | | | | | | | | | | | | | | clk_prepare_enable() can fail here and we must check its return value. Also, add a missing clk_disable_unprepare(). Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: use proper name for the R-Car SoCWolfram Sang2017-06-191-1/+1
| | | | | | | | | | | | | | | | It is 'R-Car', not 'RCar'. No code or binding changes, only descriptive text. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: xlp9xx: Enable HWMON class probing for xlp9xxGeorge Cherian2017-06-191-0/+1
| | | | | | | | | | | | | | | | Set I2C_CLASS_HWMON for xlp9xx to enable automatic probing of BMC devices by the ipmi-ssif driver. Signed-off-by: George Cherian <george.cherian@cavium.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: i801: Add support for Intel Cannon LakeSrinivas Pandruvada2017-06-192-0/+10
| | | | | | | | | | | | | | | | | | | | Added SMBUS PCI Ids for SMBUS for Cannon Lake PCH. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> [jarkko.nikula@linux.intel.com: Add entries to Documentation and Kconfig. Cover Cannon Lake-H too] Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: xgene-slimpro: include linux/io.h for memremapArnd Bergmann2017-06-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The newly added support for the pcc mailbox fails to build in some configurations: drivers/i2c/busses/i2c-xgene-slimpro.c: In function 'xgene_slimpro_i2c_probe': drivers/i2c/busses/i2c-xgene-slimpro.c:516:25: error: implicit declaration of function 'memremap'; did you mean 'memcmp'? [-Werror=implicit-function-declaration] drivers/i2c/busses/i2c-xgene-slimpro.c:518:13: error: 'MEMREMAP_WB' undeclared (first use in this function) drivers/i2c/busses/i2c-xgene-slimpro.c:518:13: note: each undeclared identifier is reported only once for each function it appears in This includes the missing header file. Fixes: df5da47fe722 ("i2c: xgene-slimpro: Add ACPI support by using PCC mailbox") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hoan Tran <hotran@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: stub: fix build warning regressionWolfram Sang2017-06-151-1/+1
| | | | | | | | | | | | | | | | Commit 6c42778780c40c ("i2c: stub: use pr_fmt") changed the DEBUG handling and caused build warnings. Revert back to the original. Fixes: 6c42778780c40c ("i2c: stub: use pr_fmt") Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: mxs: change error printing to debug for mxs_i2c_pio_wait_xfer_endMichael Thalmeier2017-06-021-3/+3
| | | | | | | | | | | | | | | | | | | | | | Instead of printing errors after mxs_i2c_pio_wait_xfer_end returns with an error code just print a debug message. NAKs and timeouts can occur in this situation normally, so do not treat them as errors. Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: sh_mobile: drop needless check for of_nodeWolfram Sang2017-06-021-12/+7
| | | | | | | | | | | | | | | | | | | | 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>
| * i2c: sh_mobile: remove platform_dataWolfram Sang2017-06-021-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * i2c: stub: use pr_fmtWolfram Sang2017-06-021-8/+8
| | | | | | | | | | | | | | | | | | | | | | Instead of hard coding "i2c-stub:", let's use the pr_fmt mechanism to achieve the same more easily. This makes it easier to stay consistent when adding new messages. Also, remove an unneeded OOM message while we are here. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: xgene-slimpro: Add ACPI support by using PCC mailboxHoan Tran2017-06-021-13/+161
| | | | | | | | | | | | | | | | This patch adds ACPI support by using PCC mailbox communication interface. Signed-off-by: Hoan Tran <hotran@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: xgene-slimpro: Use a single function to send command messageHoan Tran2017-06-021-41/+26
| | | | | | | | | | | | | | | | This patch refactors the code to use a single message function to send command message. Signed-off-by: Hoan Tran <hotran@apm.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: reformat core-base file headerWolfram Sang2017-05-311-21/+22
| | | | | | | | | | | | | | | | Finally, apply modern comment rules to the file header. The old style looked very non-Linuxish and challenged my eyes for some time now. I also added my own copyright for the period of me being the maintainer. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: remove unneeded includes from coreWolfram Sang2017-05-311-2/+0
| | | | | | | | | | | | | | | | They seem like cruft to me. I couldn't find any evidence that something included from there is actually used. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: break out ACPI support into separate fileWolfram Sang2017-05-314-648/+669
| | | | | | | | | | | | | | | | | | Removes some ifdeffery. Also add the new file to the relevant MAINTAINERS section. Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: break out OF support into separate fileWolfram Sang2017-05-314-264/+286
| | | | | | | | | | | | | | Also removes some ifdeffery. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: break out smbus support into separate fileWolfram Sang2017-05-313-575/+595
| | | | | | | | | | | | | | | | | | Break out the exported SMBus functions and the emulation layer into a separate file. This also involved splitting up the tracing header into an I2C and an SMBus part. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: break out slave support into separate fileWolfram Sang2017-05-314-101/+118
| | | | | | | | | | | | | | Also removes some ifdeffery. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| * i2c: rename core source file to allow refactorizationWolfram Sang2017-05-313-2/+4
| | | | | | | | | | | | | | | | | | | | | | The I2C core became quite huge and its monolithic structure makes maintenance hard. So, prepare to break out some functionality into separate files by renaming the source file. Note that we keep the resulting object name constant to avoid regressions. Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* | Merge tag 'char-misc-4.13-rc1' of ↵Linus Torvalds2017-07-033-0/+187
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc updates from Greg KH: "Here is the "big" char/misc driver patchset for 4.13-rc1. Lots of stuff in here, a large thunderbolt update, w1 driver header reorg, the new mux driver subsystem, google firmware driver updates, and a raft of other smaller things. Full details in the shortlog. All of these have been in linux-next for a while with the only reported issue being a merge problem with this tree and the jc-docs tree in the w1 documentation area" * tag 'char-misc-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (147 commits) misc: apds990x: Use sysfs_match_string() helper mei: drop unreachable code in mei_start mei: validate the message header only in first fragment. DocBook: w1: Update W1 file locations and names in DocBook mux: adg792a: always require I2C support nvmem: rockchip-efuse: add support for rk322x-efuse nvmem: core: add locking to nvmem_find_cell nvmem: core: Call put_device() in nvmem_unregister() nvmem: core: fix leaks on registration errors nvmem: correct Broadcom OTP controller driver writes w1: Add subsystem kernel public interface drivers/fsi: Add module license to core driver drivers/fsi: Use asynchronous slave mode drivers/fsi: Add hub master support drivers/fsi: Add SCOM FSI client device driver drivers/fsi/gpio: Add tracepoints for GPIO master drivers/fsi: Add GPIO based FSI master drivers/fsi: Document FSI master sysfs files in ABI drivers/fsi: Add error handling for slave drivers/fsi: Add tracepoints for low-level operations ...
| * \ Merge 4.12-rc5 into char-misc-nextGreg Kroah-Hartman2017-06-122-5/+22
| |\ \ | | |/ | | | | | | | | | | | | We want the char/misc driver fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | i2c: i2c-mux-gpmux: new driverPeter Rosin2017-06-033-0/+187
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a general purpose i2c mux that uses a multiplexer controlled by the multiplexer subsystem to do the muxing. The user can select if the mux is to be mux-locked and parent-locked as described in Documentation/i2c/i2c-topology. Acked-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | i2c: imx: Use correct function to write to registerMichail Georgios Etairidis2017-06-221-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The i2c-imx driver incorrectly uses readb()/writeb() to read and write to the appropriate registers when performing a repeated start. The appropriate imx_i2c_read_reg()/imx_i2c_write_reg() functions should be used instead. Performing a repeated start results in a kernel panic. The platform is imx. Signed-off-by: Michail G Etairidis <m.etairidis@beck-ipc.com> Fixes: ce1a78840ff7 ("i2c: imx: add DMA support for freescale i2c driver") Fixes: 054b62d9f25c ("i2c: imx: fix the i2c bus hang issue when do repeat restart") Acked-by: Fugang Duan <fugang.duan@nxp.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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