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path: root/drivers/hwmon/lm90.c
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2008-10-26hwmon: (lm90) Add support for the LM99 16 degree offsetJean Delvare
The LM99 differs from the LM86, LM89 and LM90 in that it reports remote temperatures (temp2) 16 degrees lower than they really are. So far we have been cheating and handled this in userspace but it really should be handled by the driver directly. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org>
2008-10-26hwmon: (lm90) Fix handling of hysteresis valueJean Delvare
There are several problems in the way the hysteresis value is handled by the lm90 driver: * In show_temphyst(), specific handling of the MAX6646 is missing, so the hysteresis is reported incorrectly if the critical temperature is over 127 degrees C. * In set_temphyst(), the new hysteresis register value is written to the chip but data->temp_hyst isn't updated accordingly, so there is a short period of time (up to 2 seconds) where the old hystereris value will be returned while the new one is already active. * In set_temphyst(), the critical temperature which is used as a base to compute the value of the hysteresis register lacks device-specific handling. As a result, the value of the hysteresis register might be incorrect for the ADT7461 and MAX6646 chips. Fix these 3 bugs. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Ben Hutchings <bhutchings@solarflare.com> Cc: Nate Case <ncase@xes-inc.com>
2008-10-17hwmon: (lm90) Don't spam the kernel logJean Delvare
Degrade the "Unsupported chip" message from info to debug level. There's nothing wrong with this, so no need to bother the user. Also make the message slightly more descriptive. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Martyn Welch <martyn.welch@gefanuc.com>
2008-10-17hwmon: (lm90) Support MAX6646, MAX6647 and MAX6649Ben Hutchings
These Maxim chips are similar to MAX6657 but use unsigned temperature values to allow for readings up to 145 degrees. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-10-17hwmon: (lm90) Rename temperature conversion functions to match usageBen Hutchings
The encoding of temperatures varies between chips and modes. So do not use "temp1" or "temp2" in the names of the conversion functions, but specify the encoding. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Martyn Welch <martyn.welch@gefanuc.com>
2008-10-17hwmon: (lm90) Support ADT7461 in extended modeNate Case
Support ADT7461 in extended temperature range mode, which will change the range of readings from 0..127 to -64..191 degC. Adjust the register conversion functions accordingly. Signed-off-by: Nate Case <ncase@xes-inc.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Martyn Welch <martyn.welch@gefanuc.com>
2008-10-17hwmon: (lm90) Convert some macros to static functionsNate Case
Use static functions instead of the TEMPx_FROM_REG* and TEMPx_TO_REG* macros. This will ensure type safety and eliminate any side effects from arguments passed in since the macros referenced 'val' multiple times. This change should not affect functionality. Signed-off-by: Nate Case <ncase@xes-inc.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Martyn Welch <martyn.welch@gefanuc.com>
2008-10-17hwmon: (lm90) Update datasheet linksJean Delvare
Update the links to the datasheet of some of the devices supported by the lm90 driver. Also remove the links from the driver itself, so that we don't have to update them twice each time they change. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Martyn Welch <martyn.welch@gefanuc.com>
2008-10-17hwmon: (lm90) Don't access nonexistent registers on Maxim chipsJean Delvare
The Maxim chips supported by the lm90 driver have 8-bit high and low remote limit values, not 11-bit as the other chips have. So stop reading from and writing to registers that do not exist on these chips. Also round the limit values set by the user properly. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Martyn Welch <martyn.welch@gefanuc.com>
2008-10-17hwmon: (lm90) Support the extra resolution bits of MAX6657Jean Delvare
The Maxim MAX6657, MAX6658 and MAX6659 have extra resolution bits for the local temperature measurement. Let the lm90 driver read them and export them to user-space. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Martyn Welch <martyn.welch@gefanuc.com>
2008-10-17hwmon: (lm90) Move 16-bit value read to a separate functionJean Delvare
Move the code which aggregates two 8-bit register values into a 16-bit value to a separate function. We'll need to do it a second time soon and I don't want to duplicate the code. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Martyn Welch <martyn.welch@gefanuc.com>
2008-07-16hwmon: (lm90) Convert to a new-style i2c driverJean Delvare
The new-style lm90 driver implements the optional detect() callback to cover the use cases of the legacy driver. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-02-18hwmon: normal_i2c arrays should be constMark M. Hoffman
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-07hwmon: Discard useless I2C driver IDsJean Delvare
Many I2C hwmon drivers define a driver ID but no other code references these, meaning that they are useless. Discard them, along with a few IDs which are defined but never used at all. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-07hwmon: (lm90) Use generic i2c reads during detectionJean Delvare
As indirectly reported by Olof Johansson, the lm90 driver uses a custom i2c read function even during detection, at which point we don't know yet what device we're talking with. It would make more sense to only use the generic i2c read function at this point, so that we don't log irrelevant errors on misdetection. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09hwmon: (lm90) Export temperature offset valuesJean Delvare
Now that we have standard sysfs names to export temperature offset values, add this feature to the lm90 driver. All supported chips except the MAX6657, MAX6658 and MAX6659 support it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09hwmon: Convert from class_device to deviceTony Jones
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>
2007-07-30hwmon: Fix regression caused by typo in lm90.cGuillaume Chazarain
The commit http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=32c82a934759b2c9939c9e25865c2d7d1204b9e8 broke lm90 for my (Asus V6VA) laptop. Before 2.6.23-rc1 and with the following patch, I get: [g ~]$ sensors max6657-i2c-0-4c Adapter: SMBus I801 adapter at 0400 M/B Temp: +64°C (low = +0°C, high = +127°C) CPU Temp: +78.9°C (low = +73.2°C, high = +88.2°C) M/B Crit: +105°C (hyst = +95°C) CPU Crit: +105°C (hyst = +95°C) Which regressed into: [g ~]$ sensors No sensors found! Make sure you loaded all the kernel drivers you need. Try sensors-detect to find out which these are. zsh: 2701 exit 1 sensors and dmesg contains: i2c-adapter i2c-0: Unsupported chip (man_id=0x4D, chip_id=0x4D). It seems to be a typo, as address 0X4F is mentionned nowhere else in the file, and my chip is actually at 0x4C. Signed-off-by: Guillaume Chazarain <guichaz@yahoo.fr> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-07-19hwmon: Fault files naming conventionJean Delvare
We have the following naming convention documented in Documentation/hwmon/sysfs-interface for fault files: in[0-*]_input_fault fan[1-*]_input_fault temp[1-*]_input_fault Some drivers follow this convention (lm63, lm83, lm90, smsc47m192). However some drivers omit the "input" part and create files named fan1_fault (pc87427) or temp1_fault (dme1737). And the new "generic" libsensors follows this second (non-standard) convention, so it fails to report fault conditions for drivers which follow the standard. We want a single naming scheme, and everyone seems to prefer the shorter variant, so let's go for it. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-07-19hwmon/lm90: Add support for the Maxim MAX6680/MAX6681Rainer Birkenmaier
Signed-off-by: Rainer Birkenmaier <rainer.birkenmaier@siemens.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-07-19hwmon/lm90: Spelling fix: explicitlyJean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-09-28hwmon: Fix unchecked return status, batch 4Jean Delvare
hwmon: Fix unchecked return status, batch 4 Fix up some hwmon drivers so that they no longer ignore return status from device_create_file(). Note: f71805f actually checked the status from device_create_file already. However it did not remove the files on device destruction. It was also an opportunity to use sysfs_create/remove_group instead of hand-made loops. This makes the changes much more important but I think the result is worth it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28hwmon: Add individual alarm files to 4 driversJean Delvare
hwmon: Add individual alarm files to 4 drivers Add individual sysfs files for all f71805f, lm63, lm83 and lm90 alarm and fault conditions. This is a requirement for the planned chip-independent libsensors. Almost all other hwmon drivers will need the same improvement. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-23[PATCH] hwmon: Semaphore to mutex conversionsIngo Molnar
convert drivers/hwmon/*.c semaphore use to mutexes. the conversion was generated via scripts, and the result was validated automatically via a script as well. all affected hwmon drivers were build-tested. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] I2C: Remove .owner setting from i2c_driver as it's no longer neededGreg Kroah-Hartman
Now that i2c_add_driver() doesn't need the module owner to be set by hand, we can delete it from the drivers. This patch catches all of the drivers that I found in the current tree (if a driver sets the .owner by hand, it's not a problem, just not needed.) Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Cc: Jean Delvare <khali@linux-fr.org>
2006-01-05[PATCH] i2c: Drop i2c_driver.{owner,name}, 3 of 11Laurent Riffard
We should use the i2c_driver.driver's .name and .owner fields instead of the i2c_driver's ones. This patch updates the hwmon drivers. Signed-off-by: Laurent Riffard <laurent.riffard@free.fr> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: Drop i2c_driver.flags, 2 of 3Jean Delvare
Just about every i2c chip driver sets the I2C_DF_NOTIFY flag, so we can simply make it the default and drop the flag. If any driver really doesn't want to be notified when i2c adapters are added, that driver can simply omit to set .attach_adapter. This approach is also more robust as it prevents accidental NULL pointer dereferences. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] hwmon: lm90 documentation updateJean Delvare
Update the I2C addresses for the ADM1032 and ADT7461 chips. Also update the links to the Analog Devices web site. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] hwmon: Add PEC support to the lm90 driverJean Delvare
Add PEC support to the lm90 driver. Only the ADM1032 chip supports it, and in a rather tricky way, which is why this patch comes with documentation reinforcements. At least, this demonstrates that the new PEC support logic in i2c-core can properly deal with chips with partial PEC support. As enabling PEC causes a significant performance drop, it can be disabled through a sysfs file (unsurprisingly named "pec"). Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] hwmon: Separate the lm90 register read functionJean Delvare
Preparatory patch to add PEC support to the lm90 driver. We need a centralized function to read register values, where the PEC code will be later inserted. A positive side effect is that read errors are now handled properly. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] hwmon: kzalloc conversionDeepak Saxena
Use kzalloc instead of kmalloc+memset in all hardware monitoring drivers. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05[PATCH] hwmon: hwmon vs i2c, second round (06/11)Jean Delvare
The only thing left in i2c-sensor.h are module parameter definition macros. It's only an extension of what i2c.h offers, and this extension is not sensors-specific. As a matter of fact, a few non-sensors drivers use them. So we better merge them in i2c.h, and get rid of i2c-sensor.h altogether. Signed-off-by: Jean Delvare <khali@linux-fr> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05[PATCH] hwmon: hwmon vs i2c, second round (04/11)Jean Delvare
i2c_probe and i2c_detect now do the exact same thing and operate on the same data structure, so we can have everyone call i2c_probe. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05[PATCH] I2C: refactor message in i2c_detach_clientJean Delvare
We could refactor the error message 34 different i2c drivers print if i2c_detach_client() fails in this function itself. Saves quite a few lines of code. Documentation is updated to reflect that change. Note that this patch should be applied after Rudolf Marek's w83792d patches. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05[PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (7/9)Jean Delvare
Kill normal_isa in header files, documentation and all chip drivers, as it is no more used. normal_i2c could be renamed to normal, but I decided not to do so at the moment, so as to limit the number of changes. This might be done later as part of the i2c_probe/i2c_detect merge. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05[PATCH] I2C hwmon: add hwmon sysfs class to driversMark M. Hoffman
This patch modifies sensors chip drivers to make use of the new sysfs class "hwmon". Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-07-11[PATCH] I2C: Move hwmon drivers (2/3)Jean Delvare
Part 2: Move the driver files themselves. Note that the patch "adds trailing whitespace", because it does move the files as-is, and some files happen to have trailing whitespace. From: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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