opensbi.git/lib/utils/gpio/gpio.c, branch master

lib: utils/gpio: respect flag GPIO_FLAG_ACTIVE_LOW

2024-05-23T10:12:52Z

"gpio-poweroff" and "gpio-restart" always set gpio to high to active the function, but some chips need a low signal to active. Fortunately, it can be achieved by setting GPIO_FLAG_ACTIVE_LOW for the gpio. Implement this flag support for the gpio library so the gpio reset can function well. Signed-off-by: Inochi Amaoto Reviewed-by: Anup Patel

lib: utils/gpio: use list for drivers

2021-11-03T10:27:56Z

Convert static array to sbi_list. This removes size limitation, makes add/remove more efficient and saves space. Signed-off-by: Nikita Shubin Reviewed-by: Anup Patel

lib: utils/gpio: Add generic GPIO configuration library

2021-07-17T06:12:51Z

We add generic GPIO configuration library which is independent of hardware description format (FDT or ACPI). The OpenSBI platform support or GPIO drivers can register GPIO chip instances which can be discovered and used by different GPIO clients. Each GPIO chip instance has a unique ID which can be used by GPIO clients to lookup GPIO chip instance. Signed-off-by: Anup Patel Reviewed-by: Atish Patra