kernel.git/drivers/hwmon/it87.c, branch linux-4.12.y

hwmon: (it87) Avoid registering the same chip on both SIO addresses

2017-03-22T07:18:21Z

IT8705F is known to respond on both SIO addresses. Registering it twice may result in system lockups. Reported-by: Russell King Fixes: e84bd9535e2b ("hwmon: (it87) Add support for second Super-IO chip") Signed-off-by: Guenter Roeck

hwmon: (it87) Add support for IT8792E

2017-02-11T05:35:08Z

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

hwmon: (it87) Do not overwrite bit 2..6 of pwm control registers

2017-02-11T05:35:08Z

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

hwmon: (it87) Fix pwm4 detection for IT8620 and IT8628

2017-02-11T05:35:08Z

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

hwmon: (it87) Ensure that pwm control cache is current before updating values

2017-02-11T05:35:08Z

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 Signed-off-by: Guenter Roeck

hwmon: (it87) Improve IT8622 support

2017-02-11T05:35:08Z

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

hwmon: (it87) Add support for IT8622E

2017-02-11T05:35:08Z

IT8622E is similar to IT8620E, but only supports five pwm controls and five fan tachometers. Originally-from: Kevin Folz . Signed-off-by: Guenter Roeck

hwmon: (it87) Add feature flag indicating that VIN3 is connected to 5V

2017-02-11T05:35:08Z

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

hwmon: (it87) use permission-specific DEVICE_ATTR variants

2017-01-02T18:19:45Z

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 [groeck: Updated description] Signed-off-by: Guenter Roeck

hwmon: (it87) Drop useless comments

2016-09-09T04:34:17Z

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 Cc: Martin Blumenstingl Cc: Guenter Roeck Signed-off-by: Guenter Roeck