kernel/linux.git/drivers/hwmon/it87.c, branch v6.3.2

hwmon (it87): Fix voltage scaling for chips with 10.9mV ADCs

2023-03-22T02:14:55+00:00

Fix voltage scaling for chips that have 10.9mV ADCs, where scaling was not performed. Fixes: ead8080351c9 ("hwmon: (it87) Add support for IT8732F") Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230318080543.1226700-2-frank@crawford.emu.id.au [groeck: Update subject and description to focus on bug fix] Signed-off-by: Guenter Roeck

hwmon: (it87) Add new chipset IT87952E

2023-02-03T15:30:11+00:00

Add IT87952E, a new chip ID (DEV ID 0x8695), which appears to be an updated version of the IT8792E and takes the same configuration. The model name comes from the model name printed on the chip. There is no datasheet publicly available. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230128060308.1549707-7-frank@crawford.emu.id.au Signed-off-by: Guenter Roeck

hwmon: (it87) Allow multiple chip IDs for force_id

2023-02-03T15:30:11+00:00

Extend the force_id module parameter to allow specifying one or both chip IDs separately. If only a single parameter is given it defaults to using that value for all chips, similar to previous usage. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230128060308.1549707-6-frank@crawford.emu.id.au Signed-off-by: Guenter Roeck

hwmon: (it87) Add chip_id in some info message

2023-02-03T15:30:11+00:00

In cases where there are multiple chips, print out which chip is referred to, in the informational message. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230128060308.1549707-5-frank@crawford.emu.id.au Signed-off-by: Guenter Roeck

hwmon: (it87) List full chip model name

2023-02-03T15:30:11+00:00

ITE model names do not always match the chip ID. Convert from just adding a suffix to specifying the full model name. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230128060308.1549707-4-frank@crawford.emu.id.au Signed-off-by: Guenter Roeck

hwmon: (it87) Disable configuration exit for certain chips

2023-02-03T15:30:11+00:00

IT8790E and IT8792E/IT8795E have been identified as chips that can have issues when disabling configuration mode. Set to never exit configuration mode. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230128060308.1549707-3-frank@crawford.emu.id.au Signed-off-by: Guenter Roeck

hwmon: (it87) Allow disabling exiting of configuration mode

2023-02-03T15:30:11+00:00

Disabling configuration mode on some chips can result in system hang-ups and access failures to the Super-IO chip at the second SIO address. Never exit configuration mode on these chips to avoid the problem. This patch should be applied in conjunction with a previous one to initialise the second chip for certain mother boards. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230128060308.1549707-2-frank@crawford.emu.id.au [groeck: Change feature bit from 28 to 19 to be continuous] Signed-off-by: Guenter Roeck

hwmon: (it87) Group all related MODULE_PARM definitions together

2023-02-03T15:30:10+00:00

Group the MODULE_PARM definitions together to make them easier for future maintenance, rather than having them spread across the file. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230121085754.1693336-2-frank@crawford.emu.id.au Signed-off-by: Guenter Roeck

hwmon: (it87) Set second Super-IO chip in configuration mode

2023-02-03T15:30:10+00:00

On various Gigabyte AM4 boards (AB350, AX370), the second Super-IO chip (IT8792E) needs to be in configuration mode before accessing the first due to a bug in IT8792E which otherwise results in LPC bus access errors. This needs to be done before accessing the first Super-IO chip since the second chip may have been accessed prior to loading this driver. The problem is also reported to affect IT8795E, which is used on X299 boards and has the same chip ID as IT8792E (0x8733). It also appears to affect systems with IT8790E, which is used on some Z97X-Gaming boards as well as Z87X-OC, and other more recent Gigabyte boards. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230104060926.619686-3-frank@crawford.emu.id.au [groeck: Made description pass checkpatch] Signed-off-by: Guenter Roeck

hwmon: (it87) Allow calling __superio_enter outside muxed region

2023-02-03T15:30:10+00:00

Allow for superio_enter to be called without requesting the muxed memory region, in particular for initialisation of the second chipset, which must be put into configuration mode, but without an associated call to leave configuration mode. Signed-off-by: Frank Crawford Link: https://lore.kernel.org/r/20230104060926.619686-2-frank@crawford.emu.id.au [groeck: Clarified subject] Signed-off-by: Guenter Roeck