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"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 <inochiama@outlook.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
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Convert static array to sbi_list.
This removes size limitation, makes add/remove more efficient and
saves space.
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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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 <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
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