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2024-04-28hwmon: (lm70) fix links in doc and commentsKousik Sanagavarapu1-2/+2
Update links in the documentation and in-code comments which point to the datasheet. The current links don't work because National Semiconductor (which is the original manufacturer of this chip) has been a part of Texas Instruments since 2011 and http://www.national.com/ doesn't work anymore. Fixes: e1a8e913f97e ("[PATCH] lm70: New hardware monitoring driver") Signed-off-by: Kousik Sanagavarapu <five231003@gmail.com> Link: https://lore.kernel.org/r/20240318154540.90613-3-five231003@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-02-28hwmon: (lm70) Add ti,tmp125 supportChristian Lamparter1-0/+16
The TMP125 is a 2 degree Celsius accurate Digital Temperature Sensor with a SPI interface. The temperature register is a 16-bit, read-only register. The MSB (Bit 15) is a leading zero and never set. Bits 14 to 5 are the 1+9 temperature data bits in a two's complement format. Bits 4 to 0 are useless copies of Bit 5 value and therefore ignored. This was tested on a Aerohive HiveAP-350. Bonus: lm70 supports TMP122/TMP124 as well. I added them to the Kconfig module description. Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Link: https://lore.kernel.org/r/43b19cbd4e7f51e9509e561b02b5d8d0e7079fac.1645175187.git.chunkeey@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-06-17hwmon: (lm70) Use SPI_MODE_X_MASKAndy Shevchenko1-1/+1
Use SPI_MODE_X_MASK instead of open coded variant. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210510141331.56736-1-andriy.shevchenko@linux.intel.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-06-17hwmon: (lm70) Revert "hwmon: (lm70) Add support for ACPI"Guenter Roeck1-25/+1
This reverts commit b58bd4c6dfe709646ed9efcbba2a70643f9bc873. None of the ACPI IDs introduced with the reverted patch is a valid ACPI device ID. Any ACPI users of this driver are advised to use PRP0001 and a devicetree-compatible device identification. Fixes: b58bd4c6dfe7 ("hwmon: (lm70) Add support for ACPI") Cc: Andrej Picej <andpicej@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-01-29hwmon: (lm70) Use device_get_match_data()Stephen Boyd1-15/+5
Use the more modern API to get the match data out of the of match table. This saves some code, lines, and nicely avoids referencing the match table when it is undefined with configurations where CONFIG_OF=n. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Jean Delvare <jdelvare@suse.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: <linux-hwmon@vger.kernel.org> [robh: rework to use device_get_match_data()] Signed-off-by: Rob Herring <robh@kernel.org>
2020-05-22hwmon: (lm70) Add support for ACPIAndrej Picej1-7/+40
This commit adds support for lm70 commpatible drivers with systems that use ACPI. Signed-off-by: Andrej Picej <andpicej@gmail.com> [groeck: Fix various issues seen if CONFIG_ACPI=n] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61Thomas Gleixner1-14/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-21hwmon: (lm70) Add support for TI TMP122/124Florian Fainelli1-1/+8
Add support for Texas Instruments TMP122/124 which are nearly identical to their TMP121/123 except that they also support programmable temperature thresholds. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-01-21hwmon: (lm70) Utilize dev_warn instead of pr_warnFlorian Fainelli1-1/+2
We have a device reference, utilize it instead of pr_warn(). Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-01-02hwmon: (lm70) use permission-specific DEVICE_ATTR variantsJulia Lawall1-3/+3
Use DEVICE_ATTR_RO for read-only attributes. This simplifies the source code, improves readbility, and reduces the chance of inconsistencies. The conversion was done automatically using coccinelle. It was validated by compiling both the old and the new source code and comparing its text, data, and bss size. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> [groeck: Updated description] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-10-28spi: Drop owner assignment from spi_driversAndrew F. Davis1-1/+0
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>
2015-08-09hwmon: (lm70) add device tree supportRabin Vincent1-1/+33
Allow the lm70 to be probed from a device tree. Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-05-22hwmon: (lm70) Convert to use devm_hwmon_device_register_with_groupsGuenter Roeck1-48/+14
Use devm_hwmon_device_register_with_groups API to attach attributes to hwmon device, simplify code, and reduce code size. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-10-18hwmon: (lm70) Remove redundant spi_set_drvdataSachin Kamat1-2/+0
Driver core sets driver data to NULL upon failure or remove. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Kaiwan N Billimoria <kaiwan@designergraphix.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-11-28hwmon: remove use of __devexitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Alistair John Strachan <alistair@devzero.co.uk> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Rudolf Marek <r.marek@assembler.cz> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28hwmon: remove use of __devinitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Alistair John Strachan <alistair@devzero.co.uk> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Rudolf Marek <r.marek@assembler.cz> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28hwmon: remove use of __devexit_pBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: Alistair John Strachan <alistair@devzero.co.uk> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Rudolf Marek <r.marek@assembler.cz> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-24hwmon: (lm70) Simplify show_name functionGuenter Roeck1-20/+1
Instead of using a switch statement to determine the device name, use to_spi_device(dev)->modalias to simplify the code and reduce module size. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-09-24hwmon: (lm70) Add support for LM71 and LM74Christophe Leroy1-3/+22
Add support for LM74 and LM71 to LM70 driver. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-09-24hwmon: (lm70) Allow 4wire SPI bus with LM70Christophe Leroy1-4/+0
Removing the 3wire limitation on LM70 as the component also allows operation on 4wire SPI bus Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-09-24hwmon: (lm70) Convert to use devm_ functionsGuenter Roeck1-3/+1
Convert to use devm_ functions to reduce code size and simplify the code. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-19hwmon: (lm70) Fix: do not use assignment in if conditionGuenter Roeck1-4/+6
Fix checkpatch issue: ERROR: do not use assignment in if condition Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-19hwmon: (lm70) Register hwmon device after creating attribute files, and ↵Guenter Roeck1-10/+11
remove it first Register hwmon device as last operation in the probe function to ensure that all attribute files exist when accessed from user applications. Otherwise, there is a short time frame where the device is registered as hwmon device but sysfs attributes do not yet exist. This could result in applications erroneously not detecting attributes. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-03-19hwmon: convert drivers/hwmon/* to use module_spi_driver()Axel Lin1-12/+1
This patch converts the drivers in drivers/hwmon/* to use the module_spi_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin <axel.lin@gmail.com> Cc: Sonic Zhang <sonic.zhang@analog.com> Cc: Marc Pignat <marc.pignat@hevs.ch> Cc: Paul Thomas <pthomas8589@gmail.com> Cc: Eric Miao <eric.y.miao@gmail.com> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2012-03-19hwmon: (lm70) fix checkpatch issuesFrans Meulenbroeks1-1/+1
fixed: ERROR: spaces required around that '=' (ctx:VxV) #60: FILE: lm70.c:60: + s16 raw=0; ^ ERROR: do not use assignment in if condition #168: FILE: lm70.c:168: + if ((status = device_create_file(&spi->dev, &dev_attr_temp1_input)) Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-05-25hwmon: Use helper functions to set and get driver dataJean Delvare1-5/+5
Use helper functions to set and get driver data. This is more elegant. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-01-08hwmon: (lm70) Use pr_fmt and pr_<level>Joe Perches1-2/+3
Added #define pr_fmt KBUILD_MODNAME ": " fmt Converted printks to pr_<level> Coalesced any long formats Removed prefixes from formats Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo1-0/+1
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-09-23hwmon: lm70: convert to device table matchingAnton Vorontsov1-36/+19
Make the code a little bit nicer, and shorter. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kaiwan N Billimoria <kaiwan@designergraphix.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-07hwmon: (lm70) Add TI TMP121 supportManuel Lauss1-10/+74
The Texas Instruments TMP121 is a SPI temperature sensor very similar to the LM70, with slightly higher resolution. This patch extends the LM70 driver to support the TMP121. The TMP123 differs in pin assign- ment. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-07hwmon: (lm70) Code streamlining and cleanupKaiwan N Billimoria1-4/+5
This fixes a byteswap bug in the LM70 temperature sensor driver, which was previously covered up by a converse bug in the driver for the LM70EVAL-LLP board (which is also fixed). Other fixes: doc updates, remove an annoying msleep(), and improve three-wire protocol handling. Signed-off-by: Kaiwan N Billimoria <kaiwan@designergraphix.com> [ dbrownell@users.sourceforge.net: doc and whitespace tweaks ] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-11-08hwmon: (lm70) Convert semaphore to mutexMatthias Kaehlcke1-5/+6
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-10hwmon: Convert from class_device to deviceTony Jones1-6/+6
Convert from class_device to device for hwmon_device_register/unregister Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-10hwmon: (lm70) Add a name attributeJean Delvare1-2/+13
Add a name attribute to the lm70 devices. This is required for libsensors to recognize them. Also drop the "+" before the temperature value, even though it did not cause problems to libsensors, other hardware monitoring drivers don't print it, so it's more consistent that way. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl> Acked-by: Kaiwan <kaiwan@designergraphix.com> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-07-17SPI: add 3wire mode flagDavid Brownell1-0/+4
Add a new spi->mode bit: SPI_3WIRE, for chips where the SI and SO signals are shared (and which are thus only half duplex). Update the LM70 driver to require support for that hardware mode from the controller. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14hwmon/lm70: Make lm70_remove a __devexit functionRalf Baechle1-1/+1
This fixes a potential broken reference. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-06-22[PATCH] lm70: New hardware monitoring driverKaiwan N Billimoria1-0/+165
This driver implements support for the National Semiconductor LM70 temperature sensor. The LM70 temperature sensor chip supports a single temperature sensor. It communicates with a host processor (or microcontroller) via an SPI/Microwire Bus interface. Communication with the LM70 is simple: when the temperature is to be sensed, the driver accesses the LM70 using SPI communication: 16 SCLK cycles comprise the MOSI/MISO loop. At the end of the transfer, the 11-bit 2's complement digital temperature (sent via the SIO line), is available in the driver for interpretation. This driver makes use of the kernel's in-core SPI support. Signed-off-by: Kaiwan N Billimoria <kaiwan@designergraphix.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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