From: Guenter Roeck Date: Tue, 9 Nov 2021 01:45:05 +0000 (-0800) Subject: hwmon: (lm90) Add partial PEC support for ADT7461 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=425f5b5d15c2dfed7193ad2517a082bc99964722;p=linux.git hwmon: (lm90) Add partial PEC support for ADT7461 Revision 0 of the ADT7461 datasheet suggests that the chip supports PEC (packet error checking). This information is gone in later versions of the datasheet. Experiments show that PEC support on ADT7461 is similar to PEC support in ADM1032, ie it is only supported for read operations. Add support for it to the driver. Signed-off-by: Guenter Roeck --- diff --git a/Documentation/hwmon/lm90.rst b/Documentation/hwmon/lm90.rst index f107d4a159fa1..9886a298797f4 100644 --- a/Documentation/hwmon/lm90.rst +++ b/Documentation/hwmon/lm90.rst @@ -322,6 +322,7 @@ ADM1032: ADT7461, ADT7461A, NCT1008: * Extended temperature range (breaks compatibility) * Lower resolution for remote temperature + * SMBus PEC support for Write Byte and Receive Byte transactions. MAX6654: * Better local resolution diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index 8ba95ea06f0c1..6c79422da4201 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -356,7 +356,7 @@ static const struct lm90_params lm90_params[] = { [adt7461] = { .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP - | LM90_HAVE_CRIT, + | LM90_HAVE_CRIT | LM90_HAVE_PARTIAL_PEC, .alert_alarms = 0x7c, .max_convrate = 10, },