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* License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-022-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'for-v4.14' of ↵Linus Torvalds2017-09-093-124/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply Pull power supply and reset changes from Sebastian Reichel: "New chip/feature support: - bq27xxx: support updating battery config from DT - bq24190: support loading battery charge info from DT - LTC2941: add LTC2942/LTC2944 support - max17042: add ACPI support - max1721x: new driver Misc: - Move bq27xxx w1 driver from w1 into power-supply subsystem - Introduce power_supply_set_input_current_limit_from_supplier - constify stuff - some minor fixes" * tag 'for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (39 commits) power: supply: bq27xxx: enable writing capacity values for bq27421 power: supply: bq24190_charger: Get input_current_limit from our supplier power: supply: bq24190_charger: Export 5V boost converter as regulator power: supply: bq24190_charger: Add power_supply_battery_info support power: supply: bq24190_charger: Add property system-minimum-microvolt power: supply: bq24190_charger: Enable devicetree config dt-bindings: power: supply: Add docs for TI BQ24190 battery charger power: supply: bq27xxx: Remove duplicate chip data arrays power: supply: bq27xxx: Enable data memory update for certain chips power: supply: bq27xxx: Add chip IDs for previously shadowed chips power: supply: bq27xxx: Create single chip data table power: supply: bq24190_charger: Add ti,bq24192i to devicetree table power: supply: bq24190_charger: Add input_current_limit property power: supply: Add power_supply_set_input_current_limit_from_supplier helper power: supply: max17042_battery: Fix compiler warning power: supply: core: Delete two error messages for a failed memory allocation in power_supply_check_supplies() power: supply: make device_attribute const power: supply: max17042_battery: Fix ACPI interrupt issues power: supply: max17042_battery: Add support for ACPI enumeration power: supply: lp8788: Make several arrays static const * const ...
| * power: supply: move HDQ interface for bq27xxx from w1 to power/supplyAndrew F. Davis2017-07-253-124/+0
| | | | | | | | | | | | | | | | | | | | The HDQ interface driver should be in this folder just like the I2C interface driver. Move this driver out of drivers/w1/slave and into drivers/power/supply. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
* | drivers: w1: add hwmon temp support for w1_thermJaghathiswari Rankappagounder Natarajan2017-08-311-0/+86
| | | | | | | | | | | | | | | | | | This change adds hwmon temp support for w1_therm. Signed-off-by: Jaghathiswari Rankappagounder Natarajan <jaghu@google.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: w1: refactor w1_slave_show to make the temp reading functionality ↵Jaghathiswari Rankappagounder Natarajan2017-08-311-31/+51
| | | | | | | | | | | | | | | | | | | | | | | | separate Inside the w1_slave_show function refactor the code to read the temp into a separate function. Signed-off-by: Jaghathiswari Rankappagounder Natarajan <jaghu@google.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: w1: add hwmon support structuresJaghathiswari Rankappagounder Natarajan2017-08-311-1/+17
| | | | | | | | | | | | | | | | | | | | This patch has changes to w1.h/w1.c generic files to add (optional) hwmon support structures. Signed-off-by: Jaghathiswari Rankappagounder Natarajan <jaghu@google.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: w1: Add 1w slave driver for DS28E05 EEPROMAndrew Worsley2017-08-284-0/+324
| | | | | | | | | | | | | | | | | | Add a one wire driver for the DS28E05 one wire slave chip. This chip requires OverDrive support to talk to it. Signed-off-by: Andrew Worsley <amworsley@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers: w1: Extend 1W master driver DS2482 with module option to support ↵Andrew Worsley2017-08-281-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | PPM/SPU/1WS features Extend the one wire DS2482 master driver with a module option that allows support for PPM/SPU/1WS interface modes to be requested. This allows support of chips that require one or more of these features such as the DS28E05. Signed-off-by: Andrew Worsley <amworsley@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: ds2438: make several functions staticColin Ian King2017-08-281-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The functions w1_ds2438_get_page, w1_ds2438_get_temperature, w1_ds2438_change_config_bit and w1_ds2438_get_voltage are local to the source and do not need to be in global scope, so make it static. Cleans up sparse warnings: symbol 'w1_ds2438_get_page' was not declared. Should it be static? symbol 'w1_ds2438_get_temperature' was not declared. Should it be static? symbol 'w1_ds2438_change_config_bit' was not declared. Should it be static? symbol 'w1_ds2438_get_voltage' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: ds1wm: add messages to make incorporation in mfd-drivers easierJohannes Poehlmann2017-08-281-1/+14
| | | | | | | | | | | | | | | | w1: ds1wm: add messages to make incorporation in mfd-drivers easier Signed-off-by: Johannes Poehlmann <johannes.poehlmann@izt-labs.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: ds1wm: silence interrupts on HW before claiming the interruptJohannes Poehlmann2017-08-281-0/+6
| | | | | | | | | | | | | | | | | | w1: ds1wm: silence interrupts on HW before claiming the interrupt. This way avoid possible invalid interrupts in the initialization phase. Signed-off-by: Johannes Poehlmann <johannes.poehlmann@izt-labs.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: ds1wm: add level interrupt modesJohannes Poehlmann2017-08-281-0/+4
| | | | | | | | | | | | | | | | w1: ds1wm: add level interrupt modes Signed-off-by: Johannes Poehlmann <johannes.poehlmann@izt-labs.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: ds1wm: make endian clean and use standard io memory accessorsJohannes Poehlmann2017-08-281-2/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | o Make endian clean, make HW-endianness configurable. o Use ioread*, iowrite* instead of __raw_readb,__raw_writeb to also use memory-barriers when accessing HW-registers. We do not want reordering to happen here. Both changes are tightly coupled, so I do them in one patch Signed-off-by: Johannes Poehlmann <johannes.poehlmann@izt-labs.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: ds1wm: fix register offset (bus shift) calculationJohannes Poehlmann2017-08-281-4/+19
| | | | | | | | | | | | | | | | | | | | | | | | Replace incorrect register offsett calculation by direct configuration of bus_shift in mfd-cell. Indirect definition of address-shift by resource size was unobvious and was wrong (should have used a binary log). Signed-off-by: Johannes Poehlmann <johannes.poehlmann@izt-labs.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: ds2490: constify usb_device_id and fix space before '[' errorArvind Yadav2017-08-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | usb_device_id are not supposed to change at runtime. All functions working with usb_device_id provided by <linux/usb.h> work with const usb_device_id. So mark the non-const structs as const. Fix checkpatch.pl error: ERROR: space prohibited before open square bracket '['. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: constify attribute_group structures.Arvind Yadav2017-08-281-1/+1
|/ | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: omap-hdq: fix error return code in omap_hdq_probe()Gustavo A. R. Silva2017-07-171-1/+2
| | | | | | | | | | | | | | platform_get_irq() returns an error code, but the omap_hdq driver ignores it and always returns -ENXIO. This is not correct, and prevents -EPROBE_DEFER from being propagated properly. Notice that platform_get_irq() no longer returns 0 on error. Print error message and propagate the return value of platform_get_irq on failure. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: Fix slave count on 1-Wire bus (resend)Alex A. Mihaylov2017-07-171-2/+2
| | | | | | | | | | | 1-Wire bus have very fast algorith for exchange with single slave device. Fix incorrect count of slave devices on connect second slave device. This case on slave device probe() step we need use generic (multislave) functions for read/write device. Signed-off-by: Alex A. Mihaylov <minimumlaw@rambler.ru> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: Add subsystem kernel public interfaceAndrew F. Davis2017-06-0932-528/+155
| | | | | | | | | | | | | | | | | | | | Like other subsystems we should be able to define slave devices outside of the w1 directory. To do this we move public facing interface definitions to include/linux/w1.h and rename the internal definition file to w1_internal.h. As w1_family.h and w1_int.h contained almost entirely public driver interface definitions we simply removed these files and moved the remaining definitions into w1_internal.h. With this we can now start to move slave devices out of w1/slaves and into the subsystem based on the function they implement, again like other drivers. Signed-off-by: Andrew F. Davis <afd@ti.com> Reviewed-by: Sebastian Reichel <sre@kernel.org> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: Organize driver source to natural/common orderAndrew F. Davis2017-05-2520-170/+138
| | | | | | | | | | | | | | | Structures and functions should be ordered such that forward declaration use is minimized. MODULE_* macros should immediately follow the structures and functions upon which they act. Remaining MODULE_* macros should be at the end of the file in alphabetical order. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: Remove unneeded use of assert() and remove w1_log.hAndrew F. Davis2017-04-086-41/+0
| | | | | | | | | | | The only use of assert() is in matrox_w1.c and is used to check the input to probe() from the PCI subsystem for NULL values, these are guaranteed to be populated and no other PCI driver makes this check, remove this. As this was the only definition in w1_log.h, remove this also. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: Use kernel common min() implementationAndrew F. Davis2017-04-081-3/+1
| | | | | Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: w1_ds2760.h: fix defines indentationMariusz Bialonczyk2017-03-171-4/+6
| | | | | Signed-off-by: Mariusz Bialonczyk <manio@skyboo.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: add support for DS2438 Smart Battery MonitorMariusz Bialonczyk2017-03-174-0/+398
| | | | | | | | | Detailed information about support and provided sysfs files in my next commit which creates a documentation file: Documentation/w1/slaves/w1_ds2438 Signed-off-by: Mariusz Bialonczyk <manio@skyboo.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* sched/headers: Prepare for new header dependencies before moving code to ↵Ingo Molnar2017-03-022-1/+2
| | | | | | | | | | | | | | | | | | | | <linux/sched/signal.h> We are going to split <linux/sched/signal.h> out of <linux/sched.h>, which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder <linux/sched/signal.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* w1: ds2405: use module_w1_family to simplify the codeWei Yongjun2017-02-101-12/+1
| | | | | | | | | module_w1_family() makes the code simpler by eliminating boilerplate code. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: ds2490: use kmemdup rather than duplicating its implementationWei Yongjun2017-02-101-2/+1
| | | | | | | | | | Use kmemdup rather than duplicating its implementation. Generated by: scripts/coccinelle/api/memdup.cocci Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: Fixup source file headersAndrew F. Davis2017-01-2510-70/+0
| | | | | | | | | | | Remove filename from file, this is not done anymore as it doesn't add anything and usually is incorrect as filename change often. Also shorten the GPL to the more common address-less version and remove excess white-space. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: don't leak refcount on slave attach failure in w1_attach_slave_device()Maciej S. Szmigiero2017-01-251-0/+1
| | | | | | | | | | | | | | Near the beginning of w1_attach_slave_device() we increment a w1 master reference count. Later, when we are going to exit this function without actually attaching a slave device (due to failure of __w1_attach_slave_device()) we need to decrement this reference count back. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Cc: stable@vger.kernel.org Fixes: 9fcbbac5ded489 ("w1: process w1 netlink commands in w1_process thread") Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: add DS2405 addressable switch driverMaciej S. Szmigiero2017-01-255-0/+249
| | | | | | | | | | | | | This adds a driver for a DS2405 1-wire single-channel addressable switch. The DS2405 can also work as a single-channel binary remote sensor. This driver supports two attributes: "state" and "output" which are the same attribute names as supported by existing DS2406, DS2408 and DS2413 drivers. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: ds2490: USB transfer buffers need to be DMAableMaciej S. Szmigiero2017-01-251-58/+84
| | | | | | | | | | | | | | | | | | ds2490 driver was doing USB transfers from / to buffers on a stack. This is not permitted and made the driver non-working with vmapped stacks. Since all these transfers are done under the same bus_mutex lock we can simply use shared buffers in a device private structure for two most common of them. While we are at it, let's also fix a comparison between int and size_t in ds9490r_search() which made the driver spin in this function if state register get requests were failing. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Cc: stable <stable@vger.kernel.org> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: omap_hdq: Free resources on error pathChristophe JAILLET2017-01-251-1/+1
| | | | | | | | | | | | | In case of error returned by '_omap_hdq_reset()', free resources as done elsewhere in this function. This patch slighly changes the semantic of the code. It now propagates the error code returned by '_omap_hdq_reset()' instead of returning -EINVAL unconditionally. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: fix timeout_us parameter descriptionWei Yongjun2016-08-311-2/+2
| | | | | | | Fix 'timeout_us' parameter description. Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers: w1: style corrections-pointers-blanklines-comparisonsBen Werbowyj2016-08-311-2/+4
| | | | | | | | | | | | Correct pointer notations to include whitespace between variable type and "*" character. Inserted blank line after variable declatations at two locations. Rearranged comparison within an if statment to have the constant on the right-hand side. Signed-off-by: Ben Werbowyj <ben.werbowyj@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers: w1: removed assignment from within if statementBen Werbowyj2016-08-311-2/+4
| | | | | | | | | Assignment of variable count removed from within an if statment. This was done at two locations in the file. Signed-off-by: Ben Werbowyj <ben.werbowyj@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers: w1: style corrections for parenthesis and bracesBen Werbowyj2016-08-311-6/+4
| | | | | | | | | | Inserted whitespace between command and open parenthesis at two locations. Removed new line between open brace and command/declaration at two locations. Signed-off-by: Ben Werbowyj <ben.werbowyj@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1:omap_hdq: fix regressionH. Nikolaus Schaller2016-08-021-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit e93762bbf681 ("w1: masters: omap_hdq: add support for 1-wire mode") added a statement to clear the hdq_irqstatus flags in hdq_read_byte(). If the hdq reading process is scheduled slowly or interrupts are disabled for a while the hardware read activity might already be finished on entry of hdq_read_byte(). And hdq_isr() already has set the hdq_irqstatus to 0x6 (can be seen in debug mode) denoting that both, the TXCOMPLETE and RXCOMPLETE interrupts occurred in parallel. This means there is no need to wait and the hdq_read_byte() can just read the byte from the hdq controller. By resetting hdq_irqstatus to 0 the read process is forced to be always waiting again (because the if statement always succeeds) but the hardware will not issue another RXCOMPLETE interrupt. This results in a false timeout. After such a situation the hdq bus hangs. Link: http://lkml.kernel.org/r/b724765f87ad276a69625bc19806c8c8844c4590.1469513669.git.hns@goldelico.com Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: add helper macro module_w1_familyAndrew F. Davis2016-08-0211-131/+22
| | | | | | | | | | | | | The helper macro module_w1_family can be used in module drivers that only register a w1 driver in their module init functions. Add this macro and use it in all applicable drivers. Link: http://lkml.kernel.org/r/20160531204313.20979-2-afd@ti.com Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: remove need for ida and use PLATFORM_DEVID_AUTOAndrew F. Davis2016-08-023-66/+13
| | | | | | | | | | | | | PLATFORM_DEVID_AUTO can be used to have the platform core assign a unique ID instead of manually creating one with IDA. Do this in all applicable drivers. Link: http://lkml.kernel.org/r/20160531204313.20979-1-afd@ti.com Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* w1: add ability to set (SRAM) and store (EEPROM) configuration for temp ↵Ben Sen2016-05-012-7/+213
| | | | | | | | | | | | | | sensors like DS18B20 Since many temperature sensors come "preconfigured" with a lower precision, people are stuck at that precision when running on a kernel based device (unlike the Dallas 1Wire library for e.g. Arduino, which supports writing the configuration/scratchpad). This patch adds write support for the scratchpad/precision registers via w1_slave sysfs. Signed-off-by: Ben Sen <0.x29a.0@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: silence an uninitialized variable warningDan Carpenter2016-05-011-1/+1
| | | | | | | | If kstrtoint() returns -ERANGE then "tmp" is uninitialized. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Evgeniy Polaykov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: Spelling s/minmum/minimum/Geert Uytterhoeven2016-05-011-1/+1
| | | | | Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: enable active pullup for DS2482 by defaultMariusz Bialonczyk2016-05-011-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | This commit enables the active pullup (APU bit) by default for the DS2482 1-Wire master. >From the DS2482 datasheet: "The APU bit controls whether an active pullup (controlled slew-rate transistor) or a passive pullup (Rwpu resistor) will be used to drive a 1-Wire line from low to high. When APU = 0, active pullup is disabled (resistor mode). Active Pullup should always be selected unless there is only a single slave on the 1-Wire line." According to the module author, Ben Gardner: "It doesn't look like active pullup would cause any hurt if there is only a single slave." And my tests with multiple and single slaves on 1-Wire bus confirms that. This active pullup can be manually disabled using the introduced module parameter: active_pullup = 0 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* w1: w1_process() is not freezable kthreadJiri Kosina2016-02-111-1/+0
| | | | | | | | | w1_process() calls try_to_freeze(), but the thread doesn't mark itself freezable through set_freezable(), so the try_to_freeze() call is useless. Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* omap_hdq: fix usecount handlingAndreas Kemnade2016-02-081-1/+0
| | | | | | | | | | | hdq_usecount was set to zero after a successful read, so omap_hdq_put could not properly free resources which leads e.g. to increasing usecounts in lsmod output Signed-off-by: Andreas Kemnade <andreas@kemnade.info> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Reviewed-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'for-v4.4' of ↵Linus Torvalds2015-11-051-2/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply Pull power supply and reset updates from Sebastian Reichel: - new AXP20X USB Power driver - new Qualcomm SMBB driver - new TPS65217 Charger driver - BQ24257: add BQ24250/BQ24251 support - overhaul bq27x00 battery driver, rename to bq27xxx - misc fixes and cleanups * tag 'for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (54 commits) power: bq27xxx_battery: Remove unneeded dependency in Kconfig power: bq27xxx_battery: move irq handler to i2c section power: bq27xxx_battery: fix platform probe twl4030_charger: add missing iio dependency power_supply: charger-manager: add missing of_node_put Documentation: power: bq24257: Document exported sysfs entries power: bq24257: Add various device-specific sysfs properties power: bq24257: Allow input current limit sysfs access power: bq24257: Add input DPM voltage threshold setting support power: bq24257: Add over voltage protection setting support power: bq24257: Add SW-based approach for Power Good determination power: bq24257: Allow manual setting of input current limit power: bq24257: Add bit definition for temp sense enable power: bq24257: Add basic support for bq24250/bq24251 dt: power: bq24257-charger: Cover additional devices power: bq24257: Simplify bq24257_power_supply_init() power: bq24257: Use managed power supply register power: bq24257: Streamline input current limit setup power: bq24257: Remove IRQ config through stat-gpios power: bq27xxx_battery: fix signedness bug in bq27xxx_battery_read_health() ...
| * power: bq27xxx_battery: Platform initialization must declare a deviceAndrew F. Davis2015-09-231-0/+1
| | | | | | | | | | | | | | | | When initialized as a platform device the initializer must now specify a device. An empty device name is no longer valid. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
| * power: bq27x00_battery: Renaming for consistencyAndrew F. Davis2015-09-231-2/+2
| | | | | | | | | | | | | | | | | | | | | | Rename functions that are used by multiple devices. New devices have been added and the function names and driver name are no longer general enough for the functionality they provide. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: GUAN Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Sebastian Reichel <sre@kernel.org>
* | W1: w1-gpio - switch to using dev_pm_opsDmitry Torokhov2015-10-171-13/+7
| | | | | | | | | | | | | | | | | | | | | | Let's stop using legacy platform driver hooks for power management and switch to using the standard dev_pm_ops-based hooks. Also, instead of guarding PM methods with #ifdef CONFIG_PM annotate them as __maybe_unused as it provides better compile coverage. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | w1: masters: omap_hdq: add support for 1-wire modeVignesh R2015-10-051-33/+191
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patches makes following changes to omap_hdq driver - Enable 1-wire mode. - Implement w1_triplet callback to facilitate search rom procedure and auto detection of 1-wire slaves. - Proper enabling and disabling of interrupt. - Cleanups (formatting and return value checks). HDQ mode remains unchanged. Signed-off-by: Vignesh R <vigneshr@ti.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Cc: Jonathan Corbet <corbet@lwn.net> CC: Tony Lindgren <tony@atomide.com> Cc: Vignesh R <vigneshr@ti.com> Cc: NeilBrown <neilb@suse.de> Cc: Fabian Frederick <fabf@skynet.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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