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| author | Anup Patel <apatel@ventanamicro.com> | 2024-08-07 10:47:18 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2024-12-06 09:26:45 +0530 |
| commit | 54e632b72e80101cf733c47ad1c419d23a8b78e7 (patch) | |
| tree | c4e1728b41cb62f10ba733a3141697e35e1ff290 /lib/utils/cppc | |
| parent | 33ee9b8240fee298ddd357a68096652286024670 (diff) | |
| download | opensbi-54e632b72e80101cf733c47ad1c419d23a8b78e7.zip opensbi-54e632b72e80101cf733c47ad1c419d23a8b78e7.tar.gz opensbi-54e632b72e80101cf733c47ad1c419d23a8b78e7.tar.bz2 | |
lib: utils: Add simple FDT based CPPC driver framework
The generic platform can have multiple CPPC drivers so add a simple
FDT based CPPC driver framework.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Diffstat (limited to 'lib/utils/cppc')
| -rw-r--r-- | lib/utils/cppc/Kconfig | 10 | ||||
| -rw-r--r-- | lib/utils/cppc/fdt_cppc.c | 22 | ||||
| -rw-r--r-- | lib/utils/cppc/fdt_cppc_drivers.carray | 3 | ||||
| -rw-r--r-- | lib/utils/cppc/objects.mk | 11 |
4 files changed, 46 insertions, 0 deletions
diff --git a/lib/utils/cppc/Kconfig b/lib/utils/cppc/Kconfig new file mode 100644 index 0000000..08d1c97 --- /dev/null +++ b/lib/utils/cppc/Kconfig @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: BSD-2-Clause + +menu "CPPC Device Support" + +config FDT_CPPC + bool "FDT based CPPC drivers" + depends on FDT + default n + +endmenu diff --git a/lib/utils/cppc/fdt_cppc.c b/lib/utils/cppc/fdt_cppc.c new file mode 100644 index 0000000..0e1ecb2 --- /dev/null +++ b/lib/utils/cppc/fdt_cppc.c @@ -0,0 +1,22 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2024 Ventana Micro Systems Inc. + * + * Authors: + * Anup Patel <apatel@ventanamicro.com> + */ + +#include <sbi_utils/cppc/fdt_cppc.h> + +/* List of FDT CPPC drivers generated at compile time */ +extern const struct fdt_driver *const fdt_cppc_drivers[]; + +void fdt_cppc_init(const void *fdt) +{ + /* + * Platforms might have multiple CPPC devices or might + * not have any so probe all and don't fail. + */ + fdt_driver_init_all(fdt, fdt_cppc_drivers); +} diff --git a/lib/utils/cppc/fdt_cppc_drivers.carray b/lib/utils/cppc/fdt_cppc_drivers.carray new file mode 100644 index 0000000..b25c788 --- /dev/null +++ b/lib/utils/cppc/fdt_cppc_drivers.carray @@ -0,0 +1,3 @@ +HEADER: sbi_utils/cppc/fdt_cppc.h +TYPE: const struct fdt_driver +NAME: fdt_cppc_drivers diff --git a/lib/utils/cppc/objects.mk b/lib/utils/cppc/objects.mk new file mode 100644 index 0000000..fb37478 --- /dev/null +++ b/lib/utils/cppc/objects.mk @@ -0,0 +1,11 @@ +# +# SPDX-License-Identifier: BSD-2-Clause +# +# Copyright (c) 2024 Ventana Micro Systems Inc. +# +# Authors: +# Anup Patel <apatel@ventanamicro.com> +# + +libsbiutils-objs-$(CONFIG_FDT_CPPC) += cppc/fdt_cppc.o +libsbiutils-objs-$(CONFIG_FDT_CPPC) += cppc/fdt_cppc_drivers.carray.o |