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path: root/drivers/hwmon/it87.c
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2009-03-12hwmon: (it87) Properly decode -128 degrees C temperatureJean Delvare
The it87 driver is reporting -128 degrees C as +128 degrees C. That's not a terribly likely temperature value but let's still get it right, especially when it simplifies the code. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-07hwmon: Fix various typosJean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Acked-by: David Hubbard <david.c.hubbard@gmail.com>
2009-01-07hwmon: Check for ACPI resource conflictsJean Delvare
Check for ACPI resource conflicts in hwmon drivers. I've included all Super-I/O and PCI drivers. I've voluntarily left out: * Vendor-specific drivers: if they conflicted on any system, this would pretty much mean that they conflict on all systems, and we would know by now. * Legacy ISA drivers (lm78 and w83781d): they only support chips found on old designs were ACPI either wasn't supported or didn't deal with thermal management. * Drivers accessing the I/O resources indirectly (e.g. through SMBus): the checks are already done where they belong, i.e. in the bus drivers. Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: David Hubbard <david.c.hubbard@gmail.com>
2009-01-07hwmon: (it87) Add support for the ITE IT8720FJean-Marc Spaggiari
Allow it87.c to handle IT8720 chipset like IT8718 in order to retrieve voltage, temperatures and fans speed from sensors tools. Also updating the related documentation. Signed-off-by: Jean-Marc Spaggiari <jean-marc@spaggiari.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-10-17hwmon: (it87) Fix thermal sensor type valuesJean Delvare
The it87 driver doesn't follow the standard sensor type values as documented in Documentation/hwmon/sysfs-interface. It uses value 2 for thermistors instead of value 4. This causes "sensors" to tell the user that the chip is setup for a transistor while it is actually setup for a thermistor. Using value 4 for thermistors solves the problem. For compatibility reasons, we still accept value 2 but emit a warning message so that users update their configuration files. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com>
2008-10-09hwmon: (it87) Prevent power-off on Shuttle SN68PTJean Delvare
On the Shuttle SN68PT, FAN_CTL2 is apparently not connected to a fan, but to something else. One user has reported instant system power-off when changing the PWM2 duty cycle, so we disable it. I use the board name string as the trigger in case the same board is ever used in other systems. This closes lm-sensors ticket #2349: pwmconfig causes a hard poweroff http://www.lm-sensors.org/ticket/2349 Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-09-20hwmon: (it87) Fix fan tachometer reading in IT8712F rev 0x7 (I)Andrew Paprocki
The IT8712F v0.9.1 datasheet applies to revisions >= 0x8 (J). The driver was incorrectly attempting to enable 16-bit fan readings on rev 0x7 (I) which led to incorrect RPM values. Signed-off-by: Andrew Paprocki <andrew@ishiboo.com> Tested-by: John Gumb <john.gumb@tandberg.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-08-06hwmon: (it87) Support for 16-bit fan reading in it8705 >= rev 0x03Andrew Paprocki
The it8705 chip supports 16-bit fan tachometers in revisions at least >= 0x03 (Version G). This patch enables 16-bit fan readings on all revisions >= 0x03 just like the it8712, it8716, and it8718 chips. Signed-off-by: Andrew Paprocki <andrew@ishiboo.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-08-06hwmon: (it87) Support for 16-bit fan reading in it8712 >= rev 0x07Andrew Paprocki
The it8712 chip supports 16-bit fan tachometers in revisions >= 0x07. Revisions >= 0x08 dropped support for 8-bit fan divisor registers. The patch enables 16-bit fan readings on all revisions >= 0x07 just like the it8716 and it8718 chips. Signed-off-by: Andrew Paprocki <andrew@ishiboo.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-02-07hwmon: (it87) Delete pwmN_freq files on driver removalJean Delvare
In commit f8d0c19a93cea3a26a90f2462295e1e01a4cd250 I forgot to delete the pwmN_freq files on driver removal, here's the fix. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Riku Voipio <riku.voipio@movial.fi> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-07hwmon: (it87) Add individual alarm filesJean Delvare
The new libsensors needs this. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-07hwmon: (it87) Discard a dead e-mail addressJean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-07hwmon: Let the user override the detected Super-I/O device IDJean Delvare
While it is possible to force SMBus-based hardware monitoring chip drivers to drive a not officially supported device, we do not have this possibility for Super-I/O-based drivers. That's unfortunate because sometimes newer chips are fully compatible and just forcing the driver to load would work. Instead of that we have to tell the users to recompile the kernel driver, which isn't an easy task for everyone. So, I propose that we add a module parameter to all Super-I/O based hardware monitoring drivers, letting advanced users force the driver to load on their machine. The user has to provide the device ID of a supposedly compatible device. This requires looking at the source code or a datasheet, so I am confident that users can't randomly force a driver without knowing what they are doing. Thus this should be relatively safe. As you can see from the code, the implementation is pretty simple and unintrusive. 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>
2008-01-22hwmon: (it87) request only Environment Controller portsBjorn Helgaas
The IT8705F and related parts are Super I/O controllers that contain many separate devices. Some BIOSes describe IT8705F I/O port usage under a motherboard device (PNP0C02) with overlapping regions, e.g., 0x290-0x29f and 0x290-0x294. The it87 driver supports only the Environment Controller, which requires only two ISA ports, but it used to request an eight-port range. If that range exceeds a range reported by the BIOS, as 0x290-0x297 would, the request fails, and the it87 driver cannot claim the device. This patch makes the it87 driver request only the two ports used for the Environment Controller device. Systems where this problem has been reported: Gigabyte GA-K8N Ultra 9 Gigabyte M56S-S3 Gigabyte GA-965G-DS3 Kernel bug reports: http://bugzilla.kernel.org/show_bug.cgi?id=9514 http://lkml.org/lkml/2007/12/4/466 Related change: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a7839e960675b549f06209d18283d5cee2ce9261 The patch above increases the number of PNP port resources we support. Prior to this patch, we ignored some port resources, which masked the it87 problem. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09hwmon: VRM is not read from registersJean Delvare
The VRM value is not read from chip registers, so there's no need to update the device data cache before exporting the VRM value to user-space. 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: (it87) Add support for fan4 and fan5Jean Delvare
Add support for the IT8716F and IT8718F fan4 and fan5. The late revisions of the IT8712F have these too but support is harder to add and nobody asked for it yet, so I didn't include it. Signed-off-by: Jean Delvare <khali@linux-fr.org> 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: Add missing __devexit tags in various driversJean Delvare
On Sun, 22 Jul 2007 00:30:56 +0200, Gabriel C wrote: > I noticed this warnings on current git: > > drivers/hwmon/pc87360.c:1082: warning: 'pc87360_remove' defined but not used > drivers/hwmon/sis5595.c:580: warning: 'sis5595_remove' defined but not used > drivers/hwmon/smsc47m1.c:608: warning: 'smsc47m1_remove' defined but not used > drivers/hwmon/via686a.c:648: warning: 'via686a_remove' defined but not used > drivers/hwmon/vt8231.c:755: warning: 'vt8231_remove' defined but not used Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-07-19hwmon: convert it87 to platform drivercorentin.labbe
This is the patch for converting it87 to a platform driver (and remove i2c-isa). Signed-off-by: Corentin LABBE <corentin.labbe@geomatys.fr> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-07-19hwmon/it87: Add IT8726F supportRudolf Marek
Add support for IT8726F chip driver, which is just same as IT8716F with additional glue logic for AMD power sequencing. Signed-off-by: Rudolf Marek <r.marek@assembler.cz> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-02-14hwmon: Cleanup a bogus legacy commentJean Delvare
Cleanup a bogus legacy comment that has been replicated to many hardware monitoring drivers. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-02-14hwmon: Simplify the locking model of two driversJean Delvare
Many hardware monitoring drivers use two different mutexes, one to protect their per-device data structure, and one to protect the access to the device registers. These mutexes are essentially redundant, as the drivers are transfering values between the device registers and the data cache, so they almost always end up holding both mutexes at the same time. Using a single mutex will make the code more simple and faster. I am changing only two of the affected drivers here, the authors of the other affected drivers are welcome to submit similar patches if they want. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-02-14hwmon/it87: Add PWM base frequency controlJean Delvare
Let the user select the base PWM frequency when using the it87 hardware monitoring driver. Different frequencies can give better control on some fans. Also update the documentation to mention the PWM frequency control files, with misc cleanups to the PWM section. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-12hwmon/it87: Remove the SMBus interface supportJean Delvare
This interface was useless as the LPC ISA-like interface is always available, is faster, and is more reliable. This cuts the driver size by some 20%. This change is also required to later convert the it87 driver to a platform driver, so that we can get rid of i2c-isa in a near future. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-09-28Fix unchecked return status, batch 5Jean Delvare
hwmon: Fix unchecked return status, batch 5 Fix up some hwmon drivers so that they no longer ignore return status from device_create_file(). Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28it87: Copyright updateJean Delvare
it87: Copyright update I think my contributions to the it87 driver over the past two years qualify me as a co-author of this driver. Also drop old comments of dubious usefulness. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28it87: Overwrite broken default limitsJean Delvare
it87: Overwrite broken default limits Some IT8716F chips where seen with unreasonable defaults for low voltage and high temperature limits. Overwrite them with sane defaults so as to not generate meaningless alarms. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28it87: Add support for the IT8718FJean Delvare
it87: Add support for the IT8718F The IT8718F is a Super-I/O chip with integrated hardware monitoring functions. It is very similar to the IT8716F, so adding support to the it87 driver was pretty straightforward. The most significant difference is that the IT8718F has up to 8 VID pins, instead of 6 for the older chips. For the IT8718F, the VID value can only be read from Super-I/O space. Userspace support is already in lm_sensors SVN (to be soon released as 2.10.1.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28it87: Cleanup set_fan_divJean Delvare
it87: Cleanup set_fan_div We only change one fan clock divider at a time, so there is only one fan min which needs to be saved and restored. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28it87: in8 has no limit registersJean Delvare
it87: in8 has no limit registers Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28it87: Prevent overflow on fan clock divider writeJean Delvare
it87: Prevent overflow on fan clock divider write The highest possible clock divider for fan1 and fan2 is 128. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28it87: No sysfs files for disabled fansJean Delvare
it87: No sysfs files for disabled fans Only create the fan attributes for enabled fan tachometers. Some motherboards have a nice BIOS which only enables the fan inputs which are wired to a fan header on the board. This makes the configuration easier for the user. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-28it87: Add support for the IT8716FJean Delvare
it87: Add support for the IT8716F The IT8716F is a Super-I/O chip with integrated hardware monitoring functions. It is very similar to the IT8712F, so adding support to the it87 driver was pretty straightforward. The most significant change here is that the IT8716F has 16-bit fan speed counters, so the user no more needs to tweak the fan clock dividers to get the best readings. Userspace support is already in lm_sensors SVN (to be soon released as 2.10.1.) Thanks to Stian Oksavik, Olivier Nicolas, Prakash Punnoor and Juergen Kilb for testing the early versions of this patch. Thanks also to ITE for providing datasheets and answering my questions. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26i2c-isa: Restore driver ownerJean Delvare
i2c-isa: Restore driver owner Commit 2b48716d1d2f2edb1e7cbc5ecf1cb2cb39373e33 back in January 2006 was a bit overzealous. It removed .owner from all i2c drivers, including i2c-isa ones, while they still need it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-23[PATCH] I2C: hwmon: Rename register parametersDarren Jenkins
"register" is a reserved keyword so using it as a parameter name can confuse some compilers, most notably ICC. The patch below just renames all occurences to reg which fits the actual function declarations. Signed-off-by: Darren Jenkins <darrenrjenkins@gmail.com> 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>
2006-02-13[PATCH] it87: Fix oops on removalJean Delvare
Fix an oops on it87 module removal when no supported hardware was found. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-06[PATCH] hwmon: Fix reboot on it87 driver loadJean Delvare
Only scan I2C address 0x2d. This is the default address and no IT87xxF chip was ever seen on I2C at a different address. These chips are better accessed through their ISA interface anyway. This fixes bug #5889, although it doesn't address the whole class of problems. We'd need the ability to blacklist arbitrary I2C addresses on systems known to contain I2C devices which behave badly when probed. Plan the I2C interface for removal as well. If nobody complains within a year, it will confirm my impression that the I2C interface isn't actually needed by anyone. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] hwmon: it87 use u8 for vrmJean Delvare
VRM values fit in u8 by design now. 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>
2005-11-23[PATCH] hwmon: Fix missing it87 fan div initJean Delvare
Fix a bug where setting the low fan speed limits will not work if no data was ever read through the sysfs interface and the fan clock dividers have not been explicitely set yet either. The reason is that data->fan_div[nr] may currently be used before it is initialized from the chip register values. The fix is to explicitely initialize data->fan_div[nr] before using it. Bug reported, and fix tested, by Nicolas Mailhot. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[PATCH] hwmon: Static function fixes, 3 of 4Ben Dooks
Fixup functions that have been declared static and then actually defined without the static on. Signed-off-by: Ben Dooks <ben-linux@fluff.org> 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>
2005-10-28[PATCH] hwmon: Drop legacy ISA address support from it87Jean Delvare
Drop legacy ISA address support from the it87 driver. All supported chips are Super-I/O chips, so the device ISA address can be safely read from Super-I/O space rather than blindly assumed. Two nearby inaccurate documentation statements have been fixed as well: * The IT8705F doesn't have an SMBus interface. * The SiS950 doesn't have a distinct prefix. 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 (07/11)Jean Delvare
The only part left in i2c-sensor is the VRM/VRD/VID handling code. This is in no way related to i2c, so it doesn't belong there. Move the code to hwmon, where it belongs. Note that not all hardware monitoring drivers do VRM/VRD/VID operations, so less drivers depend on hwmon-vid than there were depending on i2c-sensor. 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] hwmon: tag super-i/o find functions __initJean Delvare
Super-I/O find functions in hardware monitoring drivers can be tagged __init as they are only called from functions themselves tagged __init. Two of them (smsc47b397 and w83627ehf) already do, but the other four of them (it87, pc87360, smsc47m1 and w83627hf) did not. This saves a few bytes of memory after the drivers are loaded, 192 in the case of the it87 driver. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>