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path: root/drivers/hwmon/it87.c
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2017-08-13hwmon: (it87) Reapply probe path chip registers settings after resumeMaciej S. Szmigiero1-2/+74
After a suspend / resume cycle we possibly need to reapply chip registers settings that we had set or fixed in a probe path, since they might have been reset to default values or set incorrectly by a BIOS again. Tested on a Gigabyte M720-US3 board, which requires routing internal VCCH5V to in7 (and had it wrong again on resume from S3). Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> [groeck: Return value from it87_resume_sio() is unused; make it void] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-08-13hwmon: (it87) Split out chip registers setting code on probe pathMaciej S. Szmigiero1-50/+88
This commit splits out chip registers setting code on probe path to separate functions so they can be reused for setting the device properly again when system resumes from suspend. While we are at it let's also make clear that on IT8720 and IT8782 it's the VCCH5V line that is (possibly) routed to in7. This will make it consistent with a similar message that it printed on IT8783. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-22hwmon: (it87) Avoid registering the same chip on both SIO addressesGuenter Roeck1-5/+19
IT8705F is known to respond on both SIO addresses. Registering it twice may result in system lockups. Reported-by: Russell King <linux@armlinux.org.uk> Fixes: e84bd9535e2b ("hwmon: (it87) Add support for second Super-IO chip") Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10hwmon: (it87) Add support for IT8792EGuenter Roeck1-2/+16
The chip is similar to IT8732E, but supports only three fans and pwm outputs instead of four (the driver currently does not support the 4th fan and pwm output of IT8732E). Note that the chip ID is 0x8733, not 0x8792 as one would expect. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10hwmon: (it87) Do not overwrite bit 2..6 of pwm control registersGuenter Roeck1-13/+24
In IT8620E, after setting pwm control to manual, it was observed that pwm values for fan 4..6 have reversed results (writing 0 results in fans running at full speed, writing 255 results in fans turned off). With the new PWM control, pwm polarity for pwm control 4..6 is specified in its pwm control registers. Those registers are overwritten when setting the pwm mode or the temperature mapping. Do not touch bit 2..6 of pwm control registers on register writes to fix the problem. Cc: stable@vger.kernel.org # 4.9+ Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10hwmon: (it87) Fix pwm4 detection for IT8620 and IT8628Guenter Roeck1-1/+1
pwm4 is enabled if bit 2 of GPIO control register 4 is disabled, not when it is enabled. Since the check is for the skip condition, it is reversed. This applies to both IT8620 and IT8628. Fixes: 36c4d98a7883d ("hwmon: (it87) Add support for all pwm channels ...") Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10hwmon: (it87) Ensure that pwm control cache is current before updating valuesGuenter Roeck1-0/+2
If sensor attributes were never read, the pwm control data has not been initiialized, which can cause wrong driver behavior. Ensure that cached data is current before acting on it. Cc: stable@vger.kernel.org # 4.4+ Reported-by: Kevin Folz <kfolz@evertz.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10hwmon: (it87) Improve IT8622 supportGuenter Roeck1-8/+59
Configuration registers on ITE8622 are different to 8620 and 8628 and require special handling. Also, the chip supports up to 5 pwm controls. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10hwmon: (it87) Add support for IT8622EGuenter Roeck1-1/+15
IT8622E is similar to IT8620E, but only supports five pwm controls and five fan tachometers. Originally-from: Kevin Folz <kfolz@evertz.com>. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-10hwmon: (it87) Add feature flag indicating that VIN3 is connected to 5VGuenter Roeck1-3/+7
On IT8622E and IT8628E, VIN3 is expected to be connected to +5V. Add feature flag and reflect in input label. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-01-02hwmon: (it87) use permission-specific DEVICE_ATTR variantsJulia Lawall1-10/+10
Use DEVICE_ATTR_RO for read only attributes and DEVICE_ATTR_RW for read/write 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>
2016-09-08hwmon: (it87) Drop useless commentsJean Delvare1-4/+4
Remove the index comments at the end of it87_attributes_in. They serve no purpose (as there is no reference to them in it87_in_is_visible) and some of them were obviously wrong. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-08-29hwmon: (it87) Add missing sysfs attribute group terminatorJean Delvare1-0/+1
Attribute array it87_attributes_in lacks its NULL terminator, causing random behavior when operating on the attribute group. Fixes: 52929715634a ("hwmon: (it87) Use is_visible for voltage sensors") Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-08-11hwmon: (it87) Features mask must be 32 bit wideGuenter Roeck1-1/+1
Coverity reports: result_independent_of_operands: data->features & (65536UL /* 1UL << 16 */) is always 0 regardless of the values of its operands. This occurs as the logical operand of if. data->features needs to be 32 bit wide since there are more than 16 features. Fixes: cc18da79d9b7 ("hwmon: (it87) Support up to 6 temperature sensors ... "); Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Add support for IT8628EGuenter Roeck1-2/+16
IT8628E is functionally identical to IT8620E. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Fix pwm_temp_map for system with 6 pwm channelsGuenter Roeck1-8/+15
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Support automatic pwm control on newer chipsGuenter Roeck1-14/+187
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Enhance validation for fan4 and fan5Guenter Roeck1-0/+23
Several of the chips supported by this driver have a configuration register to enable fan4 and fan5. Use those registers to determine if fan4 and fan5 tachometers are supported. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Support disabling fan control for all pwm control and chipsGuenter Roeck1-21/+31
On/Off mode is only supported for pwm controls 0-2, and not supported at all for IT8603E/IT8623E. For pwm controls 3-6 and for IT8603E/IT8623E, SmartGuardian mode is always enabled. Use it and set the pwm value to the maximum if fan control is disabled. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Formatting cleanupGuenter Roeck1-75/+80
Fix various checkpatch complaints to clean up the code and make it easier to read. CHECK: Do not include the paragraph about writing to the FSF CHECK: Alignment should match open parenthesis CHECK: Logical continuations should be on the previous line CHECK: No space is necessary after a cast CHECK: Please don't use multiple blank lines CHECK: Please use a blank line after function/struct/union/enum declarations CHECK: spaces preferred around that '+' (ctx:VxV) WARNING: Missing a blank line after declarations No functional change. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Use defines for array sizes and sensor countsGuenter Roeck1-24/+34
Using array size defines makes it much easier to find errors in index values and loop counts. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Use BIT macroGuenter Roeck1-144/+146
Using the BIT macro makes the code a little easier to read and has the added benefit of making checkpatch happy. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Add support for VIN7 to VIN10 on IT8620EGuenter Roeck1-5/+24
IT8620E supports three additional voltage sensors. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Simplify reading voltage registersGuenter Roeck1-9/+13
Voltage registers are non-sequential. Use a register array instead of a macro to map sensor index to register to simplify the code and to make it easier to add additional voltage sensors. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Support up to 6 temperature sensors on IT8620EGuenter Roeck1-8/+40
Add support for the additional temperature sensors on IT8620E. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Convert to use new hwmon APIGuenter Roeck1-74/+19
Convert to use devm_hwmon_device_register_with_groups to simplify code and reduce code size. This also attaches sysfs attributes to the hwmon device and no longer to the platform device. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Use single group and is_visible for miscellaneous attributesGuenter Roeck1-48/+33
Use is_visible to determine if attributes should be generated or not. This simplifies the code and reduces object size by about 120 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Use is_visible for pwm attributesGuenter Roeck1-72/+65
Simplify code and reduce object size by about 250 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Use is_visible for fan attributesGuenter Roeck1-85/+55
Simplify code and reduce object size by almost 500 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Use is_visible for temperature sensorsGuenter Roeck1-51/+36
Simplify code and reduce object size by more than 200 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Use is_visible for voltage sensorsGuenter Roeck1-68/+56
Simplify code and reduce object size by more than 300 bytes on x86_64. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Rearrange code to avoid forward declarationsGuenter Roeck1-336/+327
Cleanup only, no functional change. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Add support for second Super-IO chipGuenter Roeck1-15/+34
The Super-IO chip can also reside at SIO address 0x4e, and there can be two Super-IO chips in the system. Add support for it. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Pass SIO base address as parameter to superio functionsGuenter Roeck1-65/+72
This will let us support more than one chip on different SIO addresses with the same driver. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Don't use pdev as static driver variableGuenter Roeck1-3/+5
Using the same varible name for function names and as static variable invites misuse and prevents us from adding support for a second chip. Rename pdev to it87_pdev and limit its use to where it is needed. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Simplify error return in it87_device_addGuenter Roeck1-7/+3
Return directly on errors if there is no cleanup necessary. Don't create an error message on memory allocation errors. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Add support for second pwm frequency registerGuenter Roeck1-31/+69
Recent chips have a separate register to select the pwm2 frequency. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Add support for all pwm channels on IT8620EGuenter Roeck1-20/+94
IT8620E supports up to 6 pwm channels. Add support for it. Also check if fan tachometers 4..6 are enabled before instantiating the respective sysfs attributes. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-04-19hwmon: (it87) Add feature flag for AVCC3 supportGuenter Roeck1-8/+13
AVCC3 is supported on IT8620E, similar to IT8603E. Add feature flag to indicate AVCC3 support. Don't enable it for now on IT8620E since it is unclear if this chip supports it correctly. Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-08-09hwmon: (it87) Add support for IT8732FJustin Maggard1-7/+36
Add support for the IT8732F. This chip is pretty similar to IT8721F, with the main difference being that the ADC LSB is 10.9 mV instead of 12 mV. Signed-off-by: Justin Maggard <jmaggard@netgear.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-09hwmon: (it87) Use feature macros on sio_dataGuenter Roeck1-2/+5
Feature macros work on sio_data as well, so use them there. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05hwmon: (it87) Add support for 6th fan of IT8620EGuenter Roeck1-15/+33
IT8620E supports up to 6 fan tachometers. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05hwmon: (it87) Add support for IT8620EGuenter Roeck1-1/+42
IT8620E is mostly compatible to IT7828F. Add generic support for it. IT8620E supports up to 6 fan tachometers and 6 pwm controls. Support for the 6th tachometer and for the additional pwm controls are addded in separate patches. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05hwmon: (it87) Add support for IT8790EGuenter Roeck1-1/+13
IT8790E is a super-IO chip with three fan tachometers. It is mostly compatible to IT8728F, but only supports three fan tachometers instead of five. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05hwmon: (it87) Introduce feature flag to reflect internal in7 sensorGuenter Roeck1-11/+16
On some chips, in7 is always an internal voltage sensor. Introduce feature flag to reflect this condition to simplify adding support for new chips. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05hwmon: (it87) Introduce configuration field for chip suffixGuenter Roeck1-3/+17
ITE chips may have 'E', 'F', or both 'E' and 'F' suffixes. Introduce suffic configuration to the it87_devices structure to simplify adding new chips. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-04-05hwmon: (it87) Fix PWM frequency display for chips with newer PWM controlGuenter Roeck1-9/+25
On chips with newer PWM control, the PWM frequency divider is 256 instead of 128. Since the base PWM frequency remained the same, the actual PWM frequency is half of what it used to be with the older PWM control mechanism. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-03-30hwmon: (it87) Fix pwm sysfs attribute removalGuenter Roeck1-1/+1
Detection if a pwm channel is supported was wrong on removal, causing the code to try removing non-existing sysfs attributes. That didn't matter much because sysfs attribute removal of non-existing files fails silently, and because the wrong evaluation always returned false, but should nevertheless be fixed. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-03-09hwmon: (it87) No need to skip fan4 for IT8603Guenter Roeck1-4/+0
IT8603 only supports three fans, so it is not necessary to skip fan4. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2015-03-09hwmon: (it87) Add support for IT8786EThomas Lorblanches1-6/+16
IT8786E is mostly compatible with IT8771 / IT8772. Parameters determined by testing various combinations. Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Thomas Lorblanches <zlika_ese@hotmail.com> [Guenter Roeck: merged from github, addressed review comments] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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