opensbi/lib/utils/gpio/objects.mk

#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2021 Western Digital Corporation or its affiliates.
#
# Authors:
#   Anup Patel <anup.patel@wdc.com>
#

libsbiutils-objs-y += gpio/fdt_gpio.o
libsbiutils-objs-y += gpio/fdt_gpio_sifive.o
libsbiutils-objs-y += gpio/gpio.o
lib: utils/gpio: Add generic GPIO configuration library 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> 2021-07-13 11:23:42 +08:00			`#`
			`# SPDX-License-Identifier: BSD-2-Clause`
			`#`
			`# Copyright (c) 2021 Western Digital Corporation or its affiliates.`
			`#`
			`# Authors:`
			`# Anup Patel <anup.patel@wdc.com>`
			`#`

lib: utils/gpio: Add simple FDT based GPIO framework We add a simple FDT based GPIO framework which is built on top of generic GPIO library. The phandle of FDT GPIO chip DT node is treated as unique GPIO chip ID required by the generic GPIO library. The FDT based GPIO chip drivers will be probed on-demand from fdt_gpio_pin_get() called by the GPIO client drivers. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> 2021-07-13 11:23:43 +08:00			`libsbiutils-objs-y += gpio/fdt_gpio.o`
lib: utils/gpio: Add minimal SiFive GPIO driver We add a minimal SiFive GPIO driver so that we can do GPIO based system power-off and reset. Signed-off-by: Green Wan <green.wan@sifive.com> Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> 2021-07-13 11:23:44 +08:00			`libsbiutils-objs-y += gpio/fdt_gpio_sifive.o`
lib: utils/gpio: Add generic GPIO configuration library 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> 2021-07-13 11:23:42 +08:00			`libsbiutils-objs-y += gpio/gpio.o`