Static attribute allocation is large and very repetitive.
Allocate attributes and attribute groups dynamically instead.
This reduces the size of the driver source by more than 600 lines,
and object size by more than 20k (more than 30%).
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
NCT6775 does not support alarms for fans 4 and 5. Drop the attributes.
cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Driver displays wrong alarms for temperature attributes.
Turns out that temperature alarm bits are not fixed, but determined
by temperature source mapping. To fix the problem, walk through
the temperature sources to determine the correct alarm bit associated
with a given attribute.
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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>
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>
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>
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>
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>
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>
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>
This driver will replace the w83627ehf driver for NCT6775F and NCT6776F,
and provides support for NCT6779D.
This patch provides support for voltage monitor attributes.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Guenter Roeck