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nvidia-oot: ivc_ext: add dummy driver support

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For some of the kernel ivc_ext is part of core kernel and
hence it is nto required to use the OOT ivc_ext driver.

However, some packaging still expect the ivc_ext.ko from
the OOT path. To trick the packaging file, add dummy ivc_ext
driver which does not have anything other than module_init/module_exit.

Bug 4551265

Change-Id: I315c9f302e65b4cdc1376815a7bc23e4b7ca3e00
Signed-off-by: Manish Bhardwaj <mbhardwaj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3214053
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Manish Bhardwaj
2024-09-19 18:25:22 +00:00
committed by Jon Hunter
parent 4a4aaf586f
commit 65d85c5c16
3 changed files with 32 additions and 0 deletions
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6
configs/Makefile.config.oot Normal file
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@@ -0,0 +1,6 @@
# SPDX-License-Identifier: GPL-2.0-only
# SPDX-FileCopyrightText: Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# Kernel OOT specific environment variables to configure the OOT modules
export NV_OOT_IVC_EXT_SKIP_BUILD=y

5
drivers/firmware/tegra/Makefile
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@@ -5,7 +5,12 @@
# Makefile for Extended IVC Driver and BPMP driver # Makefile for Extended IVC Driver and BPMP driver
# #
ifneq ($(NV_OOT_IVC_EXT_SKIP_BUILD),y)
obj-m += ivc_ext.o obj-m += ivc_ext.o
else
obj-m += ivc_ext.o
ivc_ext-objs := ivc_ext_dummy.o
endif
tegra_bpmp-y += ../../clk/tegra/clk-bpmp.o tegra_bpmp-y += ../../clk/tegra/clk-bpmp.o
tegra_bpmp-y += ../../reset/tegra/reset-bpmp.o tegra_bpmp-y += ../../reset/tegra/reset-bpmp.o
tegra_bpmp-y += ../../soc/tegra/powergate-bpmp.o tegra_bpmp-y += ../../soc/tegra/powergate-bpmp.o

21
drivers/firmware/tegra/ivc_ext_dummy.c Normal file
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@@ -0,0 +1,21 @@
// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: Copyright (c) 2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#include <linux/module.h>
static int __init ivc_driver_dummy_init(void)
{
pr_info("Inserting dummy ivc_ext.ko module");
return 0;
}
module_init(ivc_driver_dummy_init);
static void __exit ivc_driver_dummy_exit(void)
{
pr_info("Removing dummy ivc_ext.ko module");
}
module_exit(ivc_driver_dummy_exit);
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
MODULE_DESCRIPTION("Extended IVC Dummy Driver");
MODULE_LICENSE("GPL v2");