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path: root/drivers/hwmon
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2013-05-19hwmon: (tmp401) Drop redundant safety on cache lifetimeJean Delvare1-1/+1
time_after (as opposed to time_after_equal) already ensures that the cache lifetime is at least as much as requested. There is no point in manually adding another jiffy to that value, and this can confuse the reader into wrong interpretation. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Imre Deak <imre.deak@intel.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-05-13hwmon: fix error return code in abituguru_probe()Wei Yongjun1-6/+10
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-05-13hwmon: (iio_hwmon) Fix null pointer dereferenceAxel Lin1-1/+1
This patch fixes the null pointer dereference in goto error_release_channels path when allocate memory for st fails. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-05-12hwmon: (nct6775) Do not create non-existing attributesGuenter Roeck1-2/+4
Overtemperature and hysteresis registers only exist for primary temperature registers, not for alternates, so do not assign those registers when initializing alternates. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-05-12hwmon: (iio_hwmon) Fix missing iio_channel_release_all call if devm_kzalloc failAxel Lin1-2/+4
Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-05-05Merge branch 'hwmon-for-linus' of ↵Linus Torvalds2-8/+86
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging Pull hwmon update from Jean Delvare: "Only lm75 driver updates this time" * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: hwmon: (lm75) Add support for the Dallas/Maxim DS7505 hwmon: (lm75) Tune resolution and sample time per chip hwmon: (lm75) Prepare to support per-chip resolution and sample time hwmon: (lm75) Per-chip configuration register initialization
2013-05-04more mode_t whack-a-mole...Al Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-04hwmon: (lm75) Add support for the Dallas/Maxim DS7505Jean Delvare2-1/+8
Basically it's the same as the original DS75 but much faster. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <linux@roeck-us.net>
2013-05-04hwmon: (lm75) Tune resolution and sample time per chipJean Delvare1-6/+36
Most LM75-compatible chips can either sample much faster or with a much better resolution than the original LM75 chip. So far the lm75 driver did not let the user take benefit of these improvements. Do it now. I decided to almost always configure the chip to use the best resolution possible, which also means the longest sample time. The only chips for which I didn't are the DS75, DS1775 and STDS75, because they are really too slow in 12-bit mode (1.2 to 1.5 second worst case) so I went for 11-bit mode as a more reasonable tradeoff. This choice is dictated by the fact that the hwmon subsystem is meant for system monitoring, it has never been supposed to be ultra-fast, and as a matter of fact we do cache the sampled values in almost all drivers. If anyone isn't pleased with these default settings, they can always introduce a platform data structure or DT support for the lm75. That being said, it seems nobody ever complained that the driver wouldn't refresh the value faster than every 1.5 second, and the change made it faster for all chips even in 12-bit mode, so I don't expect any complaint. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <linux@roeck-us.net>
2013-05-04hwmon: (lm75) Prepare to support per-chip resolution and sample timeJean Delvare1-5/+26
Prepare the lm75 driver to support per-chip resolution and sample time. For now we only make the code generic enough to support it, but we still use the same, unchanged resolution (9-bit) and sample time (1.5 s) for all chips. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <linux@roeck-us.net>
2013-05-04hwmon: (lm75) Per-chip configuration register initializationJean Delvare1-2/+22
There is no standard for the configuration register bits of LM75-like chips. We shouldn't blindly clear bits setting the resolution as they are either unused or used for something else on some of the supported chips. So, switch to per-chip configuration initialization. This will allow for better tuning later, for example using more resolution bits when available. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <linux@roeck-us.net>
2013-05-01Merge tag 'for-v3.10' of git://git.infradead.org/battery-2.6Linus Torvalds5-0/+780
Pull battery updates from Anton Vorontsov: "Highlights: - OpenFirmware/DeviceTree support for the Power Supply core: the core now automatically populates supplied_from hierarchy from the device tree. With these patches chargers and batteries can now lookup each other without the board files support shim. Rhyland Klein at NVIDIA did the work - New ST-Ericsson ABX500 hwmon driver. The driver is heavily using the AB85xx core and depends on some recent changes to it, so that is why the driver comes through the battery tree. It has an appropriate ack from the hwmon maintainer (i.e. Guenter Roeck). Martin Persson at ST-Ericsson and Hongbo Zhang at Linaro authored the driver - Final bits to sync AB85xx ST-Ericsson changes into mainline. The changes touch mfd parts, but these were acked by the appropriate MFD maintainer (ie Samuel Ortiz). Lee Jones at Linaro did most of the work and lead the submission process. Minor changes, but still worth mentioning: - Battery temperature reporting fix for Nokia N900 phones - Versatile Express poweroff driver moved into drivers/power/reset/ - Tree-wide: use devm_kzalloc() where appropriate - Tree-wide: dev_pm_ops cleanups/fixes" * tag 'for-v3.10' of git://git.infradead.org/battery-2.6: (112 commits) pm2301-charger: Fix suspend/resume charger-manager: Use kmemdup instead of kzalloc + memcpy power_supply: Populate supplied_from hierarchy from the device tree power_supply: Add core support for supplied_from power_supply: Define Binding for power-supplies rx51_battery: Fix reporting temperature hwmon: Add ST-Ericsson ABX500 hwmon driver ab8500_bmdata: Export abx500_res_to_temp tables for hwmon ab8500_{bmdata,fg}: Add const attributes to some data arrays ab8500_bmdata: Eliminate CamelCase warning of some variables ab8500_btemp: Make ab8500_btemp_get* interfaces public goldfish_battery: Use resource_size() lp8788-charger: Use PAGE_SIZE for the sysfs read operation max8925_power: Use devm_kzalloc() da9030_battery: Use devm_kzalloc() da9052-battery: Use devm_kzalloc() ds2760_battery: Use devm_kzalloc() ds2780_battery: Use devm_kzalloc() gpio-charger: Use devm_kzalloc() isp1704_charger: Use devm_kzalloc() ...
2013-04-29Merge tag 'staging-3.10-rc1' of ↵Linus Torvalds3-0/+206
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging driver tree update from Greg Kroah-Hartman: "Here's the big staging driver tree update for 3.10-rc1 This update contains loads of comedi driver cleanups and fixes in here, iio updates, android driver changes, and other various staging driver cleanups. Thanks to some drivers being removed, and the comedi driver cleanups, we have removed more code than we added: 627 files changed, 65145 insertions(+), 76321 deletions(-) which is always nice to see. All of these have been in linux-next for a while." * tag 'staging-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (940 commits) staging: comedi: ni_labpc: fix legacy driver build staging: comedi: das800: cleanup the cio-das802/16 fifo comments staging: comedi: das800: rename CamelCase vars in das800_ai_do_cmd() staging: comedi: das800: tidy up the private data staging: comedi: das800: tidy up das800_interrupt() staging: comedi: das800: tidy up das800_ai_insn_read() staging: comedi: das800: tidy up das800_di_insn_bits() staging: comedi: das800: tidy up das800_do_insn_bits() staging: comedi: das800: remove extra divisor calculation call staging: comedi: das800: rename {enable,disable}_das800 staging: comedi: das800: tidy up subdevice init staging: comedi: das800: allow attaching without interrupt support staging: comedi: das800: interrupts are required for async command support staging: comedi: das800: tidy up das800_ai_do_cmdtest() staging: comedi: das800: remove 'volatile' on private data variables staging: comedi: das800: cleanup the boardinfo staging: comedi: das800: cleanup range table declarations staging: comedi: das800: introduce das800_ind_{write, read}() staging: comedi: das800: remove forward declarations staging: comedi: das800: move das800_set_frequency() ...
2013-04-21hwmon: (nct6775) Fix coding style problemsGuenter Roeck1-3/+3
Add space around binary operators (CodingStyle, chapter 3.1). Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-21hwmon: (nct6775) Constify stringsGuenter Roeck1-1/+1
nct6775_sio_names should be a constant pointer to an array of constant strings. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-21hwmon: (tmp401) Add support for TMP432Guenter Roeck2-38/+156
TMP432 is similar to TMP431 with a second external temperature sensor. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2013-04-21hwmon: (tmp401) Add support for update_interval attributeGuenter Roeck1-1/+53
Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2013-04-21hwmon: (tmp401) Reset valid flag when resetting temperature historyGuenter Roeck1-2/+6
Cached data is no longer valid after resetting the temperature history. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2013-04-21hwmon: (tmp401) Simplification and cleanupGuenter Roeck1-234/+137
Use two-dimensional array pointing to registers Merge temperature and limit access functions into a single function Return error codes from I2C reads Use DIV_ROUND_CLOSEST for rounding operations and improve rounding Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2013-04-17hwmon: Add ST-Ericsson ABX500 hwmon driverHongbo Zhang5-0/+780
Each of ST-Ericsson X500 chip set series consists of both ABX500 and DBX500 chips. This is ABX500 hwmon driver, where the abx500.c is a common layer for all ABX500s, and the ab8500.c is specific for AB8500 chip. Under this designed structure, other chip specific files can be added simply using the same common layer abx500.c. Signed-off-by: Hongbo Zhang <hongbo.zhang@linaro.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Anton Vorontsov <anton@enomsg.org>
2013-04-14hwmon: (tmp401) Use sysfs_create_group / sysfs_remove_groupGuenter Roeck1-63/+91
instead of creating and removing sysfs attribute files individually. Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-14hwmon: (tmp401) Drop unused defines, use BIT for bit masksGuenter Roeck1-11/+10
Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2013-04-13hwmon: (nct6775) Use ARRAY_SIZE for loops where possibleGuenter Roeck1-8/+8
This ensures that the loop iterations are correct even if/when the number of elements in an array changes. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (nct6775) Enable both AUXTIN and VIN3 on NCT6776Guenter Roeck1-37/+0
Per datasheet, VIN3 and AUXTIN share the same external pin. However, there is no clean way to detect this condition. Furthermore, both are reported by the BIOS on Supermicro C7H61. It may thus be possible that chip revisions exist where both attributes are supported at the same time. Better play safe and report both. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (ad7314) use spi_get_drvdata() and spi_set_drvdata()Jingoo Han1-2/+2
Use the wrapper functions for getting and setting the driver data using spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we can directly pass a struct spi_device. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (nct6775) Expand scope of supported chipsGuenter Roeck2-13/+12
NCT6775, NCT6776, and NCT6779 have a number of variants with the same chip ID but different chip labels. Add text "or compatible" to the message displayed when the driver is loaded and rephrase the Kconfig entry to reflect that it also supports compatible chips. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (gpio-fan) Use is_visible to determine if attributes should be createdGuenter Roeck1-65/+39
Simplify code and reduce object size by more than 300 bytes (x86_64). Cc: Jamie Lentin <jm@lentin.co.uk> Cc: Simon Guinot <simon.guinot@sequanux.org> Tested-by: Simon Guinot <simon.guinot@sequanux.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (tmp401) Fix device detection for TMP411B and TMP411CGuenter Roeck1-2/+16
Turns out that TMP411B and TMP411C have different and unique device IDs. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2013-04-08hwmon: Add driver for LM95234Guenter Roeck3-0/+780
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (tmp401) Add support for TMP431Guenter Roeck2-5/+14
TMP431 is compatible to TMP401. Also add support for additional I2C addresses supported by TMP411B and TMP411C. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Jean Delvare <khali@linux-fr.org>
2013-04-08hwmon: (pmbus/lm25066) Add support for LM25056Guenter Roeck2-10/+124
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (pmbus/lm25066) Refactor device specific coefficientsGuenter Roeck1-78/+118
Initialize device specific coefficients from table instead of hard-coding it to simplify adding additional chips. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (pmbus/lm25066) Clamp limit attributesGuenter Roeck1-0/+13
Limits on all supported sensors and chips have to be within 0..0x0fff, and limits are always positive. Clamp written values in chip driver. Also clear value cache to ensure that the actually written value is read back and reported correctly. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (pmbus/lm25066) Report VAUX as vmonGuenter Roeck1-52/+21
So far the driver reported the voltage on VAUX as "vout2". This was not entirely appropriate as it is not an output voltage, and complicates the code. Use the new virtual "VMON" register set and report the voltage as "vmon" instead. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (max6697) Use is_visible and sysfs_create_groupGuenter Roeck1-116/+93
Simplify the code and reduce its size by using is_visible to determine valid attributes, and sysfs_create_group to create all of them with a single call. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (adt7310) Fix sparse warningGuenter Roeck1-1/+1
Fix: drivers/hwmon/adt7310.c:51:16: sparse: cast to restricted __be16 Cc: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (pmbus/ltc2978) Add support for LTC2974 and LTC3883Guenter Roeck2-21/+132
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (pmbus/ltc2978) Code cleanupGuenter Roeck1-11/+14
Use u16 instead of int to store cached limit attributes. This reduces allocated data size per driver instance by 48 bytes. Use defines for the number of pages supported by individual chips. Use ARRAY_SIZE for loops to initialize array variables, and initialize all variables in the same code block. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (ltc4261) Fix 'Macros with complex values' checkpatch errorGuenter Roeck1-22/+16
Fix: ERROR: Macros with complex values should be enclosed in parenthesis by unwinding the problematic macros. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (ltc4245) Fix 'Macros with complex values' checkpatch errorGuenter Roeck1-57/+59
Fix: ERROR: Macros with complex values should be enclosed in parenthesis by unwinding the problematic macros. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (ltc4215) Fix 'Macros with complex values' checkpatch errorGuenter Roeck1-28/+18
Fix: ERROR: Macros with complex values should be enclosed in parenthesis by unwinding the problematic macros. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (ltc4151) Fix 'Avoid unnecessary line continuations' checkpatch warningGuenter Roeck1-6/+6
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (ina2xx) Fix 'Avoid unnecessary line continuations' checkpatch warningGuenter Roeck1-8/+8
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: Fix checkpatch warning 'quoted string split across lines'Guenter Roeck36-249/+271
Cc: Corentin Labbe <corentin.labbe@geomatys.fr> Cc: Mark M. Hoffman <mhoffman@lightlink.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Andreas Herrmann <herrmann.der.user@googlemail.com> Cc: Rudolf Marek <r.marek@assembler.cz> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Cc: Marc Hulsman <m.hulsman@tudelft.nl> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: Fix CamelCase checkpatch warningsGuenter Roeck8-216/+216
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (nct6775) Drop read/write lockGuenter Roeck1-10/+0
The read/write lock is acquired for each read/write operation from/to the chip. This occurs either during initialization, when it is not needed, or during updates, when the update_lock is held as well, and it is not needed either. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (nct6775) Only report VID if supported and enabledGuenter Roeck1-6/+24
VID is not always enabled (NCT6775, NCT6776) or supported (NCT6779). Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (nct6775) Detect and report additional temperature sourcesGuenter Roeck1-0/+33
Scan all temperature sources used for fan control and report if additional monitoring registers are available. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (nct6775) Add support for weighted fan controlGuenter Roeck1-14/+266
The NCT677X series support weighted fan control. In this mode, a secondary temperature source is used in addition to the primary temperature source to control fan speed. Add support for this feature. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2013-04-08hwmon: (nct6775) Add support for automatic fan controlGuenter Roeck1-7/+1092
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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