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2016-10-14Merge tag 'rtc-4.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "RTC for 4.9 Subsystem: - delete owner assignment in multiple drivers - constify rtc_class_ops structures Drivers: - ac100: support clock-output-names - cmos: properly handle ACPI alarms and quirky BIOSes and other fixes - ds1307: fix century bit support while staying comaptible with previous behaviour by default - ds1347: switch to regmap - isl12057 is now handled by ds1307 - omap: support external wakeup - rv8803: allow to disable voltage drop detection" * tag 'rtc-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (25 commits) rtc: rv8803: set VDETOFF and SWOFF via device tree dt/bindings: Add bindings for Micro Crystal rv8803 devicetree: Add Micro Crystal AG vendor id rtc: cmos: avoid unused function warning rtc: ac100: Add NULL checking for devm_kzalloc call rtc: ds1347: changed raw spi calls to register map calls rtc: cmos: Restore alarm after resume rtc: cmos: Clear ACPI-driven alarms upon resume rtc: omap: Support ext_wakeup configuration rtc: cmos: Initialize hpet timer before irq is registered rtc: asm9260: rework locking rtc: asm9260: allow COMPILE_TEST rtc: constify rtc_class_ops structures rtc: ac100: support clock-output-names in device tree binding rtc: rx6110: remove owner assignment rtc: pic32: Delete owner assignment rtc: bq32k: Fix handling of oscillator failure flag rtc: bq32k: Use correct mask name for 'minutes' register. rtc: sysfs: fix a cast removing the const attribute Documentation: dt: Intersil isl12057 is not a trivial device ...
2016-10-11Merge tag 'tegra-for-4.8-i2c' of ↵Wolfram Sang
git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into i2c/for-next [wsa: fell through the cracks, applied to 4.9 now] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> i2c: 'i2c-bus' node support for v4.8-rc1 This includes the device tree binding and I2C core changes to support the i2c-bus subnode that I2C masters can use to describe their slaves in a separate namespace and therefore avoid clashing with potentially other subnodes.
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 ...
2016-09-18iio: accel: Add driver for the mCube MC3230 3-axis accelerometerHans de Goede
Add an IIO driver for the mCube MC3230 3-axis accelerometer. A datasheet for the mCube MC3230 can be found here: http://www.mcubemems.com/wp-content/uploads/2014/10/MC3230_2-Datasheet-APS-048-0007v1.6.pdf Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-09-16i2c: rcar: add support for r8a7796 (R-Car M3-W)Ulrich Hecht
Same as r8a7795. Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-09-15i2c: meson: add gxbb compatible stringNeil Armstrong
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-08-31Documentation: dt: Intersil isl12057 is not a trivial deviceAlexandre Belloni
The ISL12057 has a documentation file, remove it from trivial-devices.txt Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-08-25dt-bindings: i2c: add bindings for nxp,pca9541Peter Rosin
Fill the gap for this pre-existing driver. Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Peter Rosin <peda@axentia.se>
2016-08-25dt-bindings: i2c: add support for 'i2c-gate' subnodePeter Rosin
Handle i2c gates similarly to how i2c arbitrators are handled. This gets rid of a pointless 'reg' property for i2c gates. I.e. this new and more compact style some-gate { i2c-gate { #address-cells = <1>; #size-cells = <0>; some-i2c-device@50 { reg = <0x50>; }; }; }; instead of the old some-gate { #address-cells = <1>; #size-cells = <0>; i2c@0 { reg = <0>; #address-cells = <1>; #size-cells = <0>; some-i2c-device@50 { reg = <0x50>; }; }; }; Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Peter Rosin <peda@axentia.se>
2016-08-25dt-bindings: i2c: add support for 'i2c-arb' subnodePeter Rosin
This gets rid of the need for a pointless 'reg' property for i2c arbitrators. I.e. this new and more compact style some-arbitrator { i2c-arb { #address-cells = <1>; #size-cells = <0>; some-i2c-device@50 { reg = <0x50>; }; }; }; instead of the old some-arbitrator { #address-cells = <1>; #size-cells = <0>; i2c@0 { reg = <0>; #address-cells = <1>; #size-cells = <0>; some-i2c-device@50 { reg = <0x50>; }; }; }; Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Peter Rosin <peda@axentia.se>
2016-08-25dt-bindings: i2c: add support for 'i2c-mux' subnodePeter Rosin
Similar to the new optional 'i2c-bus' subnode from Jon Hunter, this adds an optional 'i2c-mux' subnode, for similar reasons. I.e. it is bad of the i2c mux core to assume that any subnode of an i2c mux device is a potential (when the 'reg' property matches) i2c-mux child bus, given that i2c mux devices might do more than mux i2c traffic. So, if an 'i2c-mux' subnode is present, dictate that all i2c-mux child buses exist beneath that subnode. Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Peter Rosin <peda@axentia.se>
2016-08-23Merge tag 'iio-for-4.9a' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into work-testing Jonathan writes: First round of new features, device support and cleanups for IIO in the 4.9 cycle. Device support * ak8974 - New driver and bindings for this 2009 vintage magnetometer (it was very popular back then!) * atlas-ph-sensor - ORP sensor support(I had to look up what one of these was) * cio-dac - New driver for Measurement Computing DAC boards * dmard06 - New driver for Domintech DMARDO6 accelerometer. Also vendor prefix. * dmard09 - New driver for Domintech DMARD09 accelerometer. * maxim-thermocouple - max6675 and max31855 new driver * mt6577 auxdac - new driver for this Mediatek chip mt2701, mt6577 and mt8173 have this hardware. * ti-adc161s626 - new driver for this TI single channel differential ADC. * vcnl4000 - support vcnl4010 and vcnl4020 which are compatible for all features currently supported by this driver. New features * Core - Allow retrieving of underlying iio_dev from a callback buffer handle. This is needed to allow client drivers to perform operations such as configuring the trigger used. * hid-sensors - asynchronous resume support to avoid really long resume times. * kxcjk-1013 - add the mysterious KIOX000A ACPI id seen in the wild. * Tools - lsiio now enumerates processed as well as raw channels. Cleanup * ad7298 - use iio_device_claim_direct_mode and friends to simplify locking around mode switching and drop some boilerplate. * ad7793 - use iio_device_claim_direct_mode and friends to simplify locking around mode switching and drop some boilerplate. * ade7854 - checkpatch fixups (alignment of parameters) * atlas-ph-sensor - use iio_device_claim_direct_mode and friends to simplify locking around mode switching and drop some boilerplate. - Switch to REGCACHE_NONE as there are no useful register to cache. * bma180 - use iio_device_claim_direct_mode and friends to simplify locking around mode switching and drop some boilerplate. * hdc100x - Add mention of the HDC1000 and HDC1008 to the Kconfig help text. * isl29018 - Add driver specific prefixes to defines and function names. - Remove excessive logging. - Drop newlines which add nothing to readability. - General tidying up of comments. - Drop I2C_CLASS_HWMON as irrelevant to driver. * isl29028 - Add driver specific prefixes to defines, enums and function names. - Drop comma's from available attribute output as not ABI compliant. - Drop I2C_CLASS_HWMON as irrelevant to driver. * kxsd9 - devicetree bindings. * mag3110 - This one wasn't locking to protect against mode switches during raw_reads. Use the iio_claim_direct_mode function to fix this buglet. * maxim-theromcouple - Fix missing selects for triggered buffer support in Kconfig. * nau7802 - Use complete instead of complete_all as only one completion at a time. * sx9500 - Use complete instead of complete_all as only one completion at a time. * us5182d - Add a missing error code asignment instead of checking the result of an already checked statement. * vcnl4000 - Use BIT macro where appropriate. - Refactor return codes in read_raw callback. - Add some missing locking for concurrent accesses to the device.
2016-08-21iio: accel: add support for the Domintech DMARD09 3-axis accelerometerJelle van der Waa
Minimal implementation of an IIO driver for the Domintech DMARD09 3-axis accelerometer. Only supports reading the x,y,z axes at the moment. Implementation based on the Android driver from the Acer Liquid E2 kernel sources. Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-30Merge tag 'devicetree-for-4.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree updates from Rob Herring: - remove most of_platform_populate() calls in arch code. Now the DT core code calls it in the default case and platforms only need to call it if they have special needs - use pr_fmt on all the DT core print statements - CoreSight binding doc improvements to block name descriptions - add dt_to_config script which can parse dts files and list corresponding kernel config options - fix memory leak hit with a PowerMac DT - correct a bunch of STMicro compatible strings to use the correct vendor prefix - fix DA9052 PMIC binding doc to match what is actually used in dts files * tag 'devicetree-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (35 commits) documentation: da9052: Update regulator bindings names to match DA9052/53 DTS expectations xtensa: Partially Revert "xtensa: Remove unnecessary of_platform_populate with default match table" xtensa: Fix build error due to missing include file MIPS: ath79: Add missing include file Fix spelling errors in Documentation/devicetree ARM: dts: fix STMicroelectronics compatible strings powerpc/dts: fix STMicroelectronics compatible strings Documentation: dt: i2c: use correct STMicroelectronics vendor prefix scripts/dtc: dt_to_config - kernel config options for a devicetree of: fdt: mark unflattened tree as detached of: overlay: add resolver error prints coresight: document binding acronyms Documentation/devicetree: document cavium-pip rx-delay/tx-delay properties of: use pr_fmt prefix for all console printing of/irq: Mark initialised interrupt controllers as populated of: fix memory leak related to safe_name() Revert "of/platform: export of_default_bus_match_table" of: unittest: use of_platform_default_populate() to populate default bus memory: omap-gpmc: use of_platform_default_populate() to populate default bus bus: uniphier-system-bus: use of_platform_default_populate() to populate default bus ...
2016-07-29Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "Highlights: - TPM core and driver updates/fixes - IPv6 security labeling (CALIPSO) - Lots of Apparmor fixes - Seccomp: remove 2-phase API, close hole where ptrace can change syscall #" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (156 commits) apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family) tpm: Factor out common startup code tpm: use devm_add_action_or_reset tpm2_i2c_nuvoton: add irq validity check tpm: read burstcount from TPM_STS in one 32-bit transaction tpm: fix byte-order for the value read by tpm2_get_tpm_pt tpm_tis_core: convert max timeouts from msec to jiffies apparmor: fix arg_size computation for when setprocattr is null terminated apparmor: fix oops, validate buffer size in apparmor_setprocattr() apparmor: do not expose kernel stack apparmor: fix module parameters can be changed after policy is locked apparmor: fix oops in profile_unpack() when policy_db is not present apparmor: don't check for vmalloc_addr if kvzalloc() failed apparmor: add missing id bounds check on dfa verification apparmor: allow SYS_CAP_RESOURCE to be sufficient to prlimit another task apparmor: use list_next_entry instead of list_entry_next apparmor: fix refcount race when finding a child profile apparmor: fix ref count leak when profile sha1 hash is read apparmor: check that xindex is in trans_table bounds ...
2016-07-27Merge branch 'i2c/for-4.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "Here is the I2C pull request for 4.8: - the core and i801 driver gained support for SMBus Host Notify - core support for more than one address in DT - i2c_add_adapter() has now better error messages. We can remove all error messages from drivers calling it as a next step. - bigger updates to rk3x driver to support rk3399 SoC - the at24 eeprom driver got refactored and can now read special variants with unique serials or fixed MAC addresses. The rest is regular driver updates and bugfixes" * 'i2c/for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (66 commits) i2c: i801: use IS_ENABLED() instead of checking for built-in or module Documentation: i2c: slave: give proper example for pm usage Documentation: i2c: slave: describe buffer problems a bit better i2c: bcm2835: Don't complain on -EPROBE_DEFER from getting our clock i2c: i2c-smbus: drop useless stubs i2c: efm32: fix a failure path in efm32_i2c_probe() Revert "i2c: core: Cleanup I2C ACPI namespace" Revert "i2c: core: Add function for finding the bus speed from ACPI" i2c: Update the description of I2C_SMBUS i2c: i2c-smbus: fix i2c_handle_smbus_host_notify documentation eeprom: at24: tweak the loop_until_timeout() macro eeprom: at24: add support for at24mac series eeprom: at24: support reading the serial number for 24csxx eeprom: at24: platform_data: use BIT() macro eeprom: at24: split at24_eeprom_write() into specialized functions eeprom: at24: split at24_eeprom_read() into specialized functions eeprom: at24: hide the read/write loop behind a macro eeprom: at24: call read/write functions via function pointers eeprom: at24: coding style fixes eeprom: at24: move at24_read() below at24_eeprom_write() ...
2016-07-22Documentation: dt: i2c: use correct STMicroelectronics vendor prefixStefan Agner
The documentation currently uses the non-standard vendor prefix stm and st-micro for STMicroelectronics. The drivers do not specify the vendor prefixes since the I2C Core strips them away from the DT provided compatible string. Therefor, changing documentation and existing device trees does not have any impact on device detection. Signed-off-by: Stefan Agner <stefan@agner.ch> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Rob Herring <robh@kernel.org>
2016-07-19tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family)Jason Gunthorpe
The command flow is exactly the same, the core simply needs to be told to enable TPM2 mode when the compatible string indicates a TPM2. Signed-off-by: Andrew Azmansky <andrew.zamansky@nuvoton.com> Tested-by: Andrew Zamansky <andrew.zamansky@nuvoton.com> Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2016-07-03iio: potentiometer: mcp4531: Add device tree binding documentationFlorian Vaussard
Add the device tree documentation for all the supported parts. Apart the compatible string and standard I2C binding, no other binding is currently needed. Signed-off-by: Florian Vaussard <florian.vaussard@heig-vd.ch> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-06-30dt-bindings: i2c: Add support for 'i2c-bus' subnodeJon Hunter
The I2C driver core for boards using device-tree assumes any subnode of an I2C adapter in the device-tree blob is an I2C slave device. Although this makes complete sense, some I2C adapters may have subnodes which are not I2C slaves but subnodes presenting other features. For example some Tegra devices have an I2C interface which may share its pins with other devices. In order to share these pins using the pinctrl framework, it is necessary to add subnodes to the I2C device node that represent these pins. To allow I2C adapters to have non-I2C specific subnodes in device-tree that are not parsed by the I2C driver core, add support for an optional 'i2c-bus' subnode where I2C slaves can be placed. If the 'i2c-bus' subnode is present then all I2C slaves must be placed under this subnode. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-06-17dt-bindings: i2c: rk3x: add support for rk3399David Wu
The bus clock and function clock are separated at rk3399, and others use one clock as the bus clock and function clock. Signed-off-by: David Wu <david.wu@rock-chips.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-06-13i2c: Add generic support passing secondary devices addressesJean-Michel Hautbois
Some I2C devices have multiple addresses assigned, for example each address corresponding to a different internal register map page of the device. So far drivers which need support for this have handled this with a driver specific and non-generic implementation, e.g. passing the additional address via platform data. This patch provides a new helper function called i2c_new_secondary_device() which is intended to provide a generic way to get the secondary address as well as instantiate a struct i2c_client for the secondary address. The function expects a pointer to the primary i2c_client, a name for the secondary address and an optional default address. The name is used as a handle to specify which secondary address to get. The default address is used as a fallback in case no secondary address was explicitly specified. In case no secondary address and no default address were specified the function returns NULL. For now the function only supports look-up of the secondary address from devicetree, but it can be extended in the future to for example support board files and/or ACPI. Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-06-09i2c: mux: refer to i2c-mux.txtSimon Horman
Correct references to i2c-mux.txt which was previously mux.txt. Also correct the spelling of relevant. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-05-19Merge branch 'i2c/for-4.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - Peter Rosin did some major rework on the locking of i2c muxes by seperating parent-locked muxes and mux-locked muxes. This avoids deadlocks/workarounds when the mux itself needs i2c commands for muxing. And as a side-effect, other workarounds in the media layer could be eliminated. Also, Peter stepped up as the i2c mux maintainer and will keep an eye on these changes. - major updates to the octeon driver - add a helper to the core to generate the address+rw_bit octal and make drivers use it - quite a bunch of driver updates * 'i2c/for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (84 commits) i2c: rcar: add DMA support i2c: st: Implement bus clear i2c: only check scl functions when using generic recovery i2c: algo-bit: declare i2c_bit_quirk_no_clk_stretch as static i2c: tegra: disable clock before returning error [media] rtl2832: regmap is aware of lockdep, drop local locking hack [media] rtl2832_sdr: get rid of empty regmap wrappers [media] rtl2832: change the i2c gate to be mux-locked [media] si2168: change the i2c gate to be mux-locked iio: imu: inv_mpu6050: change the i2c gate to be mux-locked i2c: mux: document i2c muxes and elaborate on parent-/mux-locked muxes i2c: mux: relax locking of the top i2c adapter during mux-locked muxing i2c: muxes always lock the parent adapter i2c: allow adapter drivers to override the adapter locking i2c: uniphier: add "\n" at the end of error log i2c: mv64xxx: remove CONFIG_HAVE_CLK conditionals i2c: mv64xxx: use clk_{prepare_enable,disable_unprepare} i2c: mv64xxx: handle probe deferral for the clock i2c: mv64xxx: enable the driver on ARCH_MVEBU i2c: octeon: Add workaround for broken irqs on CN3860 ...
2016-05-15i2c: rcar: add DMA supportNiklas Söderlund
Make it possible to transfer i2c message buffers via DMA. Start/Stop/Sending_Slave_Address and some data is still handled using the old state machine, it is sending the bulk of the data that is done via DMA. The first byte of a transmission and the last two bytes of reception are sent/received using PIO. This is needed for the HW to have access to the first byte before DMA transmit and to be able to set the STOP condition for DMA reception. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Acked-by: Rob Herring <robh@kernel.org> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> [wsa: fixed a checkpatch warning] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-04-25i2c: octeon: Add support for cn78xx chipsJan Glauber
cn78xx has a different interrupt architecture, so we have to manage the interrupts differently. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Jan Glauber <jglauber@cavium.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-04-12i2c: rk3x: add support for rk3228Yakir Yang
Enable the I2C core for this SoC. Signed-off-by: Yakir Yang <ykk@rock-chips.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-03-18dt-bindings: i2c: Spelling s/propoerty/property/Geert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-03-03i2c: xiic: Implement power managementShubhrajyoti Datta
Enable power management. This patch enables the clocks before transfer and disables after the transfer. It also adds the clock description. Signed-off-by: Shubhrajyoti Datta <shubhraj@xilinx.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-02-12i2c: mux: demux-pinctrl: add driverWolfram Sang
This driver allows an I2C bus to switch between multiple masters. This is not hot-switching because connected I2C slaves will be re-instantiated. It is meant to select the best I2C core at runtime once the task is known. Example: Prefer i2c-gpio over another I2C core because of HW errata affecting your use case. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-01-14Merge branch 'i2c/for-4.5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "Quite some driver updates: - piix4 can now handle multiplexed adapters - brcmstb, xlr, eg20t, designware drivers support more SoCs - emev2 gained i2c slave support - img-scb and rcar got bigger refactoring to remove issues - lots of common driver updates i2c core changes: - new quirk flag when an adapter does not support clock stretching, so clients can be configured to avoid that if possible - added a helper function to retrieve timing parameters from firmware (with rcar being the first user) - "multi-master" DT binding added so drivers can adapt to this setting (like disabling PM to keep arbitration working) - RuntimePM for the logical adapter device is now always enabled by the core to ensure propagation from childs to the parent (the HW device) - new macro builtin_i2c_driver to reduce boilerplate" * 'i2c/for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (70 commits) i2c: create builtin_i2c_driver to avoid registration boilerplate i2c: imx: fix i2c resource leak with dma transfer dt-bindings: i2c: eeprom: add another EEPROM device dt-bindings: move I2C eeprom descriptions to the proper file i2c: designware: Do not require clock when SSCN and FFCN are provided DT: i2c: trivial-devices: Add Epson RX8010 and MPL3115 i2c: s3c2410: remove superfluous runtime PM calls i2c: always enable RuntimePM for the adapter device i2c: designware: retry transfer on transient failure i2c: ibm_iic: rename i2c_timings struct due to clash with generic version i2c: designware: Add support for AMD Seattle I2C i2c: imx: Remove unneeded comments i2c: st: use to_platform_device() i2c: designware: use to_pci_dev() i2c: brcmstb: Adding support for CM and DSL SoCs i2c: mediatek: fix i2c multi transfer issue in high speed mode i2c: imx: improve code readability i2c: imx: Improve message log when DMA is not used i2c: imx: add runtime pm support to improve the performance i2c: imx: init bus recovery info before adding i2c adapter ...
2016-01-10dt-bindings: move I2C eeprom descriptions to the proper fileWolfram Sang
EEPROMs can have additional properties, so they are not suitable for trivial-devices.txt. Move most bindings to the designated eeprom.txt. Add the missing "atmel,24c08" while doing that. Note that the remaining ones in trivial-devices need to be dealt with separately because of improper manufacturer names. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-01-10DT: i2c: trivial-devices: Add Epson RX8010 and MPL3115Akshay Bhat
Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-01-03i2c: brcmstb: Adding support for CM and DSL SoCsKamal Dasu
Broadcoms DSL, CM (cable modem)and STB I2C core implementation have 8 data in/out registers that can transfer 8 bytes or 32 bytes max. Cable and DSL "Peripheral" i2c cores use single byte per data register and the STB can use 4 byte per data register transfer. Adding support to take care of this difference. Accordingly added the compatible string for SoCs using the "Peripheral" I2C block. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-01-02i2c: document binding for multi-master caseWolfram Sang
We need this binding because some I2C master drivers will need to adapt their PM settings for the arbitration circuitry. Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-12-14i2c: rcar: honor additional i2c timings from DTWolfram Sang
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-12-14i2c: document generic DT bindings for timing parametersWolfram Sang
Also, sort the properties alphabetically and make indentation consistent. Wording largely taken from i2c-rk3x.txt, thanks guys! Only "i2c-scl-internal-delay-ns" is new, the rest is used by two drivers already and was documented in their driver binding documentation. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-12-12iio: chemical: add AMS iAQ-core supportMatt Ranostay
Add support for AMS iAQ-core continuous and pulsed VOC sensors. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-03i2c: at91: add support for the HOLD fieldLudovic Desroches
The hold field allows to configure the data hold time which can be set with the help of the generic binding 'i2c-sda-hold-time-ns'. This feature has been introduced with SAMA5D4 SoC family. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-11-10Merge branch 'i2c/for-4.4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - New drivers: UniPhier (with and without FIFO) - some drivers got some bigger rework: ismt, designware, img-scb (rcar had to be reverted because issues were showing up just lately) - ACPI: reworked the device scanning and added support for muxes ... and quite a lot of driver bugfixes and cleanups this time. All files touched outside of the i2c realm have proper acks. * 'i2c/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (70 commits) i2c: rcar: Revert the latest refactoring series i2c: pnx: remove superfluous assignment MAINTAINERS: i2c: drop i2c-pnx maintainer MAINTAINERS: i2c: mark also subdirectories as maintained i2c: cadence: enable driver for ARM64 i2c: i801: Document Intel DNV and Broxton i2c: at91: manage unexpected RXRDY flag when starting a transfer i2c: pnx: Use setup_timer instead of open coding it i2c: add ACPI support for I2C mux ports acpi: add acpi_preset_companion() stub i2c: pxa: Add support for pxa910/988 & new configuration features i2c: au1550: Convert to devm_kzalloc and devm_ioremap_resource i2c-dev: Fix I2C_SLAVE ioctl comment i2c-dev: Fix typo in ioctl name reference i2c: sirf: tune the divider to make i2c bus freq more accurate i2c: imx: Use -ENXIO as error in the NACK case i2c: i801: Add support for Intel Broxton i2c: i801: Add support for Intel DNV i2c: mediatek: add i2c resume support i2c: imx: implement bus recovery ...
2015-10-23i2c: imx: implement bus recoveryGao Pan
Implement bus recovery methods for i2c-imx so we can recover from situations where SCL/SDA are stuck low. Once i2c bus SCL/SDA are stuck low during transfer, config the i2c pinctrl to gpio mode by calling pinctrl sleep set function, and then use GPIO to emulate the i2c protocol to send nine dummy clock to recover i2c device. After recovery, set i2c pinctrl to default group setting. Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Gao Pan <b54642@freescale.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-10-23i2c: uniphier_f: add UniPhier FIFO-builtin I2C driverMasahiro Yamada
Add support for on-chip I2C controller used on newer UniPhier SoCs such as PH1-Pro4, PH1-Pro5, etc. This adapter is equipped with 8-depth TX/RX FIFOs. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-10-23i2c: uniphier: add UniPhier FIFO-less I2C driverMasahiro Yamada
Add support for on-chip I2C controller used on old UniPhier SoCs such as PH1-LD4, PH1-sLD8, etc. This adapter is so simple that it has no FIFO in it. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-10-20i2c: sh_mobile: add support for r8a7795 (R-Car H3)Wolfram Sang
Enable the I2C core for this SoC. It is compitable to Gen2 SoCs, so reuse the settings. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-10-20i2c: rcar: add support for r8a7795 (R-Car H3)Wolfram Sang
Enable the I2C core for this SoC. I add a new type because this version has new features (e.g. DMA) which will be added somewhen later. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-10-20i2c: davinci: Optimize clock generation on Keystone SoCAlexander Sverdlin
According to "KeyStone Architecture Inter-IC Control Bus User Guide", fixed additive part of frequency divisors (referred as "d" in the code and datasheet) always equals to 6, independent of module clock prescaler. module clock frequency master clock frequency = ---------------------- (ICCL + 6) + (ICCH + 6) It was not the case with original Davinci IP. Introduce new compatible property "ti,keystone-i2c", which triggers special handling in the driver. Without this change Keystone-based systems (having 204.8MHz input clock) choose prescaler 29 (PSC=28). Using d=5 in this case leads to bus bitrate ~353kHz instead of requested 400kHz. After correction, assuming d=6 bus rate is ~392kHz. This gives ~11% transfer rate increase. Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Tested-by: Hemanth Guruva Reddy <hemanth.guruva_reddy@nokia.com> Tested-by: Lukasz Gemborowski <lukasz.gemborowski@nokia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-09-30Merge tag 'iio-for-4.4a' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: First round of new driver, new functionality and cleanups for IIO in the 4.4 cycle New device support * APDS9960 ALS + proximity driver * bmg160 SPI devices. * HDC100x humidity sensors * Holt HI-8435 threshold detector * mma8453Q accelerometer added to the mma8452 driver * mma86452FC and mma8653FC accelerometers added to the mma8452 driver * mxc4005 accelerometer * PulsedLight LIDAR * SensorTech VZ89x volatile organic compound sensor * UPISEMI uS5182d ALS and proximity sensors New core functionality * triggered events - use triggers to check for changes in threshold type detectors on devices with out interrupt support. First user is the holt comparator. * chemical concentration and resistance channel types. New driver functionality * vf610 - buffer support. - followup coccinelle warning fix. Core rework * buffers - break out callback buffer to own module. - move buffer implementations to a new subdirectory * percolate the error code form iio_event_getfd out to userspace rather than giving a missleading error later on. Cleanups * adddac drivers - use BIT macro where appropriate. * meter drivers - use BIT macro where appropriate. * ad7303 - add an OF match table to line up with the binding docs. * adc128s052 - add an OF match table to line up with the binding docs. * adf4350 - add an OF match table to line up with the binding docs * as3935 - add an OF match table to line up with the binding docs. * berlin2-adc - use GENMASK and BIT for masks - prevent attempting to sample multiple channels at once by moving a mutex scop - coding style cleanups * bmg150_magn - kconfig sort order was wrong - fix it. * bmg160 - use i2c regmap and drop all uses of i2c_client - separate i2c and core driver * cc10001_adc - kconfig sort order was wrong - fix it. * evgen (dummy driver helper module) - move interrupt generation to irq_work to reduce differences between the dummy driver and real hardware drivers. * hmc5843 - set the name dynamically rather than to a fixed value for one of the suported parts. - export module alias information to allow autoprobing of module. * lpc32xx - on failure to get resource or irq return -ENXIO as uppose to -EBUSY * max1027 - set .of_match_table to actually allow OF style matching. * max5821 - add MODULE_DEVICE_TABLE for OF table. * mma8452 - refactor to separate out chip specific data. - add freefall / motion interrupt source for devices that do their interrupts slightly differently. - update copywrite notice. - leave naming of events directory in sysfs to the core * mcp320x - set .of_match_table so that it can be use for OF style matching. * mlx90614 - Implement filter configuration (note the datasheet changed as a result of the driver reviews to include the values we needed ;) * opt3001 - drop .owner field as assigned by platform driver core. * si7020 - replace a bitmask on the humidity values with a more correct range check. * stk310 - improved error handling. - use BIT macro where appropriate and use the resulting defines instead of magic numbers in the code. - fix indentation * st-sensors - add debugfs register read hook * tsl4531 - fix error handling in check_id * twl6030 - fix module autoload for OF * iio-trig-sysfs - document add and remove attribute * trigger in staging - code alignment fixes. - braces on both branches of if statement if needed for one. * xilinx-xadc - push interrupts into hardirq context as there isn't much in them any more and it avoids breaking PREEMPT_RT builds due to the use of a spinlock between the hardirq and the thread. Tools * event-monitor - report unsupported events. We keep expanding what can come from drivers so give a helpful error if one turns up in an out of date userspace program. * generic-buffer - helpful message about needing to enable a channel to start the buffer.
2015-09-23iio: chemical: add SGX VZ89x VOC sensor supportMatt Ranostay
Add support for VZ89X sensors VOC and CO2 reporting channels in percentage which can be converted to part per million. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-09-23iio: mma8452: add support for MMA8453Q accelerometer chipMartin Kepplinger
This adds support for the 10 bit version if Freescale's accelerometers of this series. The datasheet is available at Freescale's website: http://cache.freescale.com/files/sensors/doc/data_sheet/MMA8453Q.pdf It creates a devicetree bindings file to document the new functionality and removes the driver from the trivial-devices list. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-08-31devicetree: add PulsedLight vendor + device docsMatt Ranostay
Add pulsedlight vendor to vendor-prefixes.txt, and LIDAR device documentation to trivial-devices.txt Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>