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2021-03-11misc: eeprom_93xx46: Add quirk to support Microchip 93LC46B eepromAswath Govindraju
[ Upstream commit f6f1f8e6e3eea25f539105d48166e91f0ab46dd1 ] A dummy zero bit is sent preceding the data during a read transfer by the Microchip 93LC46B eeprom (section 2.7 of[1]). This results in right shift of data during a read. In order to ignore this bit a quirk can be added to send an extra zero bit after the read address. Add a quirk to ignore the zero bit sent before data by adding a zero bit after the read address. [1] - https://www.mouser.com/datasheet/2/268/20001749K-277859.pdf Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> Link: https://lore.kernel.org/r/20210105105817.17644-3-a-govindraju@ti.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-03misc: eeprom_93xx46: Add module alias to avoid breaking support for non ↵Aswath Govindraju
device tree users [ Upstream commit 4540b9fbd8ebb21bb3735796d300a1589ee5fbf2 ] Module alias "spi:93xx46" is used by non device tree users like drivers/misc/eeprom/digsy_mtc_eeprom.c and removing it will break support for them. Fix this by adding back the module alias "spi:93xx46". Fixes: 13613a2246bf ("misc: eeprom_93xx46: Fix module alias to enable module autoprobe") Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> Link: https://lore.kernel.org/r/20210113051253.15061-1-a-govindraju@ti.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-03misc: eeprom_93xx46: Fix module alias to enable module autoprobeAswath Govindraju
[ Upstream commit 13613a2246bf531f5fc04e8e62e8f21a3d39bf1c ] Fix module autoprobe by correcting module alias to match the string from /sys/class/.../spi1.0/modalias content. Fixes: 06b4501e88ad ("misc/eeprom: add driver for microwire 93xx46 EEPROMs") Signed-off-by: Aswath Govindraju <a-govindraju@ti.com> Link: https://lore.kernel.org/r/20210107163957.28664-2-a-govindraju@ti.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-29eeprom: at25: set minimum read/write access stride to 1Christian Eggers
commit 284f52ac1c6cfa1b2e5c11b84653dd90e4e91de7 upstream. SPI eeproms are addressed by byte. Signed-off-by: Christian Eggers <ceggers@arri.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200728092959.24600-1-ceggers@arri.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-06eeprom: at24: make spd world-readable againJean Delvare
commit 25e5ef302c24a6fead369c0cfe88c073d7b97ca8 upstream. The integration of the at24 driver into the nvmem framework broke the world-readability of spd EEPROMs. Fix it. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: stable@vger.kernel.org Fixes: 57d155506dd5 ("eeprom: at24: extend driver to plug into the NVMEM framework") Cc: Andrew Lunn <andrew@lunn.ch> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Bartosz Golaszewski <brgl@bgdev.pl> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> [Bartosz: backported the patch to older branches] Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-20eeprom: at24: add support for 24c2048Adrian Bunk
commit 37cf28d3b5bca1b532a0b6aac722e7f2788a9294 upstream. Works with ST M24M02. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Sasha Levin <sashal@kernel.org>
2017-12-20eeprom: at24: change nvmem stride to 1David Lechner
commit 7f6d2ecd3d7acaf205ea7b3e96f9ffc55b92298b upstream. Trying to read the MAC address from an eeprom that has an offset that is not a multiple of 4 causes an error currently. Fix it by changing the nvmem stride to 1. Signed-off-by: David Lechner <david@lechnology.com> [Bartosz: tweaked the commit message] Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-05eeprom: at24: check at24_read/write argumentsHeiner Kallweit
commit d9bcd462daf34aebb8de9ad7f76de0198bb5a0f0 upstream. So far we completely rely on the caller to provide valid arguments. To be on the safe side perform an own sanity check. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-05eeprom: at24: correctly set the size for at24mac402Bartosz Golaszewski
commit 5478e478eee3b096b8d998d4ed445da30da2dfbc upstream. There's an ilog2() expansion in AT24_DEVICE_MAGIC() which rounds down the actual size of EUI-48 byte array in at24mac402 eeproms to 4 from 6, making it impossible to read it all. Fix it by manually adjusting the value in probe(). This patch contains a temporary fix that is suitable for stable branches. Eventually we'll probably remove the call to ilog2() while converting the magic values to actual structs. Fixes: 0b813658c115 ("eeprom: at24: add support for at24mac series") Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-05eeprom: at24: fix reading from 24MAC402/24MAC602Heiner Kallweit
commit 644a1f19c6c8393d0c4168a5adf79056da6822eb upstream. Chip datasheet mentions that word addresses other than the actual start position of the MAC delivers undefined results. So fix this. Current implementation doesn't work due to this wrong offset. Fixes: 0b813658c115 ("eeprom: at24: add support for at24mac series") Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 ...
2016-09-27at25: fix debug and error messagingAndy Shevchenko
The patch does the following: - fixes specifiers and removes explicit casting of the parameters - joins literals to one line - increases readability of the parameters Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-22eeprom: at24: check if the chip is functional in probe()Bartosz Golaszewski
The at24 driver doesn't check if the chip is functional in its probe function. This leads to instantiating devices that are not physically present. For example the cape EEPROMs for BeagleBone Black are defined in the device tree at four addresses on i2c2, but normally only one of them is present. If the userspace doesn't know the location in advance, it will need to check if reading the nvmem attributes fails to determine which EEPROM is actually there. Try to read a single byte in probe() and bail-out with -ENODEV if the read fails. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-18eeprom: at24: tweak the loop_until_timeout() macroBartosz Golaszewski
loop_until_timeout() replaced a do {} while loop in the at24 driver with a for loop which, under certain circumstances (such as heavy load or low value of the write_timeout argument), can lead to the code in the loop never being executed. Make sure that at least one iteration of the code enclosed within loop_until_timeout() is always executed. Suggested-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: add support for at24mac seriesBartosz Golaszewski
Add a new read function to the at24 driver allowing to retrieve the factory-programmed mac address embedded in chips from the at24mac family. These chips can be instantiated similarily to the at24cs family, except that there's no way of having access to both the serial number and the mac address at the same time - the user must instantiate either an at24cs or at24mac device as both special memory areas are accessible on the same slave address. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: support reading the serial number for 24csxxBartosz Golaszewski
The chips from the at24cs family have two memory areas - a regular read-write block and a read-only area containing the serial number. The latter is visible on a different slave address (the address of the rw memory block + 0x08). In order to access both blocks the user needs to instantiate a regular at24c device for the rw block address and a corresponding at24cs device on the serial number block address. Add a function that allows to access the serial number and assign it to at24->read_func if the chip allows serial number read operations and the driver was passed the relevant flag for this device. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: split at24_eeprom_write() into specialized functionsBartosz Golaszewski
Split at24_eeprom_write() into three smaller functions - one for the i2c operations and two for the smbus extensions (separate routines for block and byte transfers). Assign them in at24_probe() depending on the bus capabilities. Also: in order to avoid duplications move code adjusting the count argument into a separate function and use it for i2c and smbus block writes (no need for a roll-over for byte writes as we're always writing one byte). Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: split at24_eeprom_read() into specialized functionsBartosz Golaszewski
Split at24_eeprom_read() into two smaller functions - one for the i2c operations and one for the smbus extensions. Assign them in at24_probe() depending on the bus capabilities. Also: in order to avoid duplications move the comments related to offset calculations above the at24_translate_offset() routine. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: hide the read/write loop behind a macroBartosz Golaszewski
Before splitting the read/write routines into smaller, more specialized functions, unduplicate some code in advance. Use a 'for' loop instead of 'do while' when waiting for the previous write to complete and hide it behind a macro. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: call read/write functions via function pointersBartosz Golaszewski
The first step in simplifying the read and write functions is to call them via function pointers stored in at24_data. When we eventually split the routines into smaller ones (depending on whether they use smbus or i2c operations) we'll simply assign them to said pointers instead of checking the flags at runtime every time we read/write. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: coding style fixesBartosz Golaszewski
Align the arguments in broken lines with the arguments list's opening brackets and make checkpatch.pl happy by converting 'unsigned' into 'unsigned int'. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: move at24_read() below at24_eeprom_write()Bartosz Golaszewski
In preparation for splitting at24_eeprom_write() & at24_eeprom_read() into smaller, specialized routines move at24_read() below, so that it won't be intertwined with the low-level EEPROM accessors. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-17eeprom: at24: improve the device_id table readabilityBartosz Golaszewski
As part of the preparation for introducing support for more chips, improve the readability of the device table by separating columns with tabs. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-05-20Merge tag 'char-misc-4.7-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc driver updates from Greg KH: "Here's the big char and misc driver update for 4.7-rc1. Lots of different tiny driver subsystems have updates here with new drivers and functionality. Details in the shortlog. All have been in linux-next with no reported issues for a while" * tag 'char-misc-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (125 commits) mcb: Delete num_cells variable which is not required mcb: Fixed bar number assignment for the gdd mcb: Replace ioremap and request_region with the devm version mcb: Implement bus->dev.release callback mcb: export bus information via sysfs mcb: Correctly initialize the bus's device mei: bus: call mei_cl_read_start under device lock coresight: etb10: adjust read pointer only when needed coresight: configuring ETF in FIFO mode when acting as link coresight: tmc: implementing TMC-ETF AUX space API coresight: moving struct cs_buffers to header file coresight: tmc: keep track of memory width coresight: tmc: make sysFS and Perf mode mutually exclusive coresight: tmc: dump system memory content only when needed coresight: tmc: adding mode of operation for link/sinks coresight: tmc: getting rid of multiple read access coresight: tmc: allocating memory when needed coresight: tmc: making prepare/unprepare functions generic coresight: tmc: splitting driver in ETB/ETF and ETR components coresight: tmc: cleaning up header file ...
2016-05-01eeprom: 93xx46: Fix SPI device leakMark Brown
The 93xx46 driver is using spi_dev_get() apparently just to take a copy of the SPI device used to instantiate it but never calls spi_dev_put() to free it. Since the device is guaranteed to exist between probe() and remove() there should be no need for the driver to take an extra reference to it so fix the leak by just using a straight assignment. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-05-01eeprom: at25: Fix SPI device leakMark Brown
The at25 driver is using spi_dev_get() apparently just to take a copy of the SPI device used to instantiate it but never calls spi_dev_put() to free it. Since the device is guaranteed to exist between probe() and remove() there should be no need for the driver to take an extra reference to it so fix the leak by just using a straight assignment. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-05-01nvmem: 93xx46: remove nvmem regmap dependencySrinivas Kandagatla
This patch moves to nvmem support in the driver to use callback instead of regmap. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-05-01eeprom: at25: remove nvmem regmap dependencySrinivas Kandagatla
This patch moves to nvmem support in the driver to use callback instead of regmap. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-05-01eeprom: at24: remove nvmem regmap dependencySrinivas Kandagatla
This patch moves to nvmem support in the driver to use callback instead of regmap. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-04-16eeprom: at24: replace msleep() with usleep_range()Bartosz Golaszewski
We cannot expect msleep(1) to actually sleep for a period shorter than 20 ms. Replace all calls to msleep() with usleep_range(). Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-04-16eeprom: at24: remove a reduntant ifBartosz Golaszewski
The second check for I2C_FUNC_I2C is reduntant, so remove it. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> [wsa: reworded commit message] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-03-01misc: at24: replace memory_accessor with nvmem_device_readAndrew Lunn
Now that the AT24 uses the NVMEM framework, replace the memory_accessor in the setup() callback with nvmem API calls. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Tested-by: Sekhar Nori <nsekhar@ti.com> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-01eeprom: 93xx46: extend driver to plug into the NVMEM frameworkAndrew Lunn
Add a regmap for accessing the EEPROM, and then use that with the NVMEM framework. Enable backward compatibility in the NVMEM config structure, so that the 'eeprom' file in sys is provided by the framework. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-01eeprom: at25: extend driver to plug into the NVMEM frameworkAndrew Lunn
Add a regmap for accessing the EEPROM, and then use that with the NVMEM framework. Enable backwards compatibility in the NVMEM config, so that the 'eeprom' file in sys is provided by the framework. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-01eeprom: at25: Remove in kernel API for accessing the EEPROMAndrew Lunn
The setup() callback is not used by any in kernel code. Remove it. Any new code which requires access to the eeprom can use the NVMEM API. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-01eeprom: at24: extend driver to plug into the NVMEM frameworkAndrew Lunn
Add a regmap for accessing the EEPROM, and then use that with the NVMEM framework. Set the NVMEM config structure to enable backward, so that the 'eeprom' file in sys is provided by the framework. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-11misc: eeprom_93xx46: Add support for a GPIO 'select' line.Cory Tusar
This commit adds support to the eeprom_93x46 driver allowing a GPIO line to function as a 'select' or 'enable' signal prior to accessing the EEPROM. Signed-off-by: Cory Tusar <cory.tusar@pid1solutions.com> Tested-by: Chris Healy <chris.healy@zii.aero> Reviewed-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-11misc: eeprom_93xx46: Add quirks to support Atmel AT93C46D device.Cory Tusar
Atmel devices in this family have some quirks not found in other similar chips - they do not support a sequential read of the entire EEPROM contents, and the control word sent at the start of each operation varies in bit length. This commit adds quirk support to the driver and modifies the read implementation to support non-sequential reads for consistency with other misc/eeprom drivers. Tested on a custom Freescale VF610-based platform, with an AT93C46D device attached via dspi2. The spi-gpio driver was used to allow the necessary non-byte-sized transfers. Signed-off-by: Cory Tusar <cory.tusar@pid1solutions.com> Tested-by: Chris Healy <chris.healy@zii.aero> Reviewed-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-09misc: eeprom_93xx46: Implement eeprom_93xx46 DT bindings.Cory Tusar
This commit implements bindings in the eeprom_93xx46 driver allowing device word size and read-only attributes to be specified via devicetree. Signed-off-by: Cory Tusar <cory.tusar@pid1solutions.com> Tested-by: Chris Healy <chris.healy@zii.aero> Reviewed-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-09misc: eeprom_93xx46: Fix 16-bit read and write accesses.Cory Tusar
Compatible at93xx46 devices from both Microchip and Atmel expect a word-based address, regardless of whether the device is strapped for 8- or 16-bit operation. However, the offset parameter passed in when reading or writing at a specific location is always specified in terms of bytes. This commit fixes 16-bit read and write accesses by shifting the offset parameter to account for this difference between a byte offset and a word-based address. Signed-off-by: Cory Tusar <cory.tusar@pid1solutions.com> Tested-by: Chris Healy <chris.healy@zii.aero> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07misc: eeprom: use kobj_to_dev()Geliang Tang
Use kobj_to_dev() instead of open-coding it. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-06Merge tag 'mfd-for-linus-4.4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "New Device Support: - Add support for 88pm860; 88pm80x - Add support for 24c08 EEPROM; at24 - Add support for Broxton Whiskey Cove; intel* - Add support for RTS522A; rts5227 - Add support for I2C devices; intel_quark_i2c_gpio New Functionality: - Add microphone support; arizona - Add general purpose switch support; arizona - Add fuel-gauge support; da9150-core - Add shutdown support; sec-core - Add charger support; tps65217 - Add flexible serial communication unit support; atmel-flexcom - Add power button support; axp20x - Add led-flash support; rt5033 Core Frameworks: - Supply a generic macro for defining Regmap IRQs - Rework ACPI child device matching Fix-ups: - Use Regmap to access registers; tps6105x - Use DEFINE_RES_IRQ_NAMED() macro; da9150 - Re-arrange device registration order; intel_quark_i2c_gpio - Allow OF matching; cros_ec_i2c, atmel-hlcdc, hi6421-pmic, max8997, sm501 - Handle deferred probe; twl6040 - Improve accuracy of headphone detect; arizona - Unnecessary MODULE_ALIAS() removal; bcm590xx, rt5033 - Remove unused code; htc-i2cpld, arizona, pcf50633-irq, sec-core - Simplify code; kempld, rts5209, da903x, lm3533, da9052, arizona - Remove #iffery; arizona - DT binding adaptions; many Bug Fixes: - Fix possible NULL pointer dereference; wm831x, tps6105x - Fix 64bit bug; intel_soc_pmic_bxtwc - Fix signedness issue; arizona" * tag 'mfd-for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (73 commits) bindings: mfd: s2mps11: Add documentation for s2mps15 PMIC mfd: sec-core: Remove unused s2mpu02-rtc and s2mpu02-clk children extcon: arizona: Add extcon specific device tree binding document MAINTAINERS: Add binding docs for Cirrus Logic/Wolfson Arizona devices mfd: arizona: Remove bindings covered in new subsystem specific docs mfd: rt5033: Add RT5033 Flash led sub device mfd: lpss: Add Intel Broxton PCI IDs mfd: lpss: Add Broxton ACPI IDs mfd: arizona: Signedness bug in arizona_runtime_suspend() mfd: axp20x: Add a cell for the power button part of the, axp288 PMICs mfd: dt-bindings: Document pulled down WRSTBI pin on S2MPS1X mfd: sec-core: Disable buck voltage reset on watchdog falling edge mfd: sec-core: Dump PMIC revision to find out the HW mfd: arizona: Use correct type ID for device tree config mfd: arizona: Remove use of codec build config #ifdefs mfd: arizona: Simplify adding subdevices mfd: arizona: Downgrade type mismatch messages to dev_warn mfd: arizona: Factor out checking of jack detection state mfd: arizona: Factor out DCVDD isolation control mfd: Make TPS6105X select REGMAP_I2C ...
2015-10-28spi: Drop owner assignment from spi_driversAndrew F. Davis
An spi_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-10-26at24: enable ACPI device found on Galileo Gen2Andy Shevchenko
There is a 24c08 chip connected to i2c bus on Intel Galileo Gen2 board. Enable it via ACPI ID INT3499. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-09-08Merge branch 'i2c/for-4.3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "Features: - new drivers: Renesas EMEV2, register based MUX, NXP LPC2xxx - core: scans DT and assigns wakeup interrupts. no driver changes needed. - core: some refcouting issues fixed and better API for that - core: new helper function for best effort block read emulation - slave framework: proper DT bindings and userspace instantiation - some bigger work for xiic, pxa, omap drivers .. and quite a number of smaller driver fixes, cleanups, improvements" * 'i2c/for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (65 commits) i2c: mux: reg Change ioread endianness for readback i2c: mux: reg: fix compilation warnings i2c: mux: reg: simplify register size checking i2c: muxes: fix leaked i2c adapter device node references i2c: allow specifying separate wakeup interrupt in device tree of/irq: export of_get_irq_byname() i2c: xgene-slimpro: dma_mapping_error() doesn't return an error code i2c: Replace I2C_CROS_EC_TUNNEL dependency eeprom: at24: use i2c_smbus_read_i2c_block_data_or_emulated i2c: core: Add support for best effort block read emulation i2c: lpc2k: add driver i2c: mux: Add register-based mux i2c-mux-reg i2c: dt: describe generic bindings i2c: slave: print warning if slave flag not set i2c: support 10 bit and slave addresses in sysfs 'new_device' i2c: take address space into account when checking for used addresses i2c: apply DT flags when probing i2c: make address check indpendent from client struct i2c: rename address check functions i2c: apply address offset for slaves, too ...
2015-08-24eeprom: at24: use i2c_smbus_read_i2c_block_data_or_emulatedIrina Tirdea
For i2c busses that support only SMBUS extensions, the eeprom at24 driver reads data from the device using the SMBus block, word or byte read protocols depending on availability. Replace the block read emulation from the driver with the i2c_smbus_read_i2c_block_data_or_emulated call from i2c core. Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-08-10misc: eeprom: Export I2C module alias information in missing driversJavier Martinez Canillas
The I2C core always reports the MODALIAS uevent as "i2c:<client name>" regardless if the driver later is match using the I2C id_table or the of_match_table. So the driver needs to export the I2C table and this be built into the module or udev won't have the necessary information to auto load the correct module when the device is added. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-08-10misc: Drop owner assignment from i2c_driverKrzysztof Kozlowski
i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-08-09Merge 4.2-rc6 into char-misc-nextGreg Kroah-Hartman
We want the fixes in Linus's tree in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-05misc: eeprom: max6875: clean up max6875_read()Vladimir Zapolskiy
The change removes redundant sysfs binary file boundary check, since this task is already done on caller side in fs/sysfs/file.c Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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