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3 Commits

Author SHA1 Message Date
Colin Ian King e1d1596963 hwmon: (ltc2992) Fix less than zero comparisons with an unsigned integer 
There are several occurrances of a less than zero error check on
a u32 unsigned integer. These will never be true. Fix this by making
reg_value a plain int.

Addresses-Coverity: ("Unsigned comparison against zero")
Fixes: e126370240e0 ("hwmon: (ltc2992) Add support")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20201207142410.168987-1-colin.king@canonical.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2020-12-11 07:42:27 -08:00
Alexandru Tachici 9ca26df1ba hwmon: (ltc2992) Add support for GPIOs. 
LTC2992 has 4 open-drain GPIOS. This patch exports to user
space the 4 GPIOs using the GPIO driver Linux API.

Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2020-12-11 07:42:27 -08:00
Alexandru Tachici b0bd407e94 hwmon: (ltc2992) Add support 
LTC2992 is a rail-to-rail system monitor that
measures current, voltage, and power of two supplies.

Two ADCs simultaneously measure each supply’s current.
A third ADC monitors the input voltages and four
auxiliary external voltages.

Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2020-12-11 07:42:27 -08:00