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soc/tegra: Implement runtime check for Tegra SoCs

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Subsequent patches will move some of the initialization code from SoC
setup code to regular initcalls. To prevent breakage on other SoCs in
multi-platform builds, these initcalls need to check that they indeed
run on Tegra.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-07-16 14:01:44 +02:00
parent dd849e581d
commit a2686766c8
3 changed files with 46 additions and 0 deletions
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2
drivers/soc/tegra/Makefile
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@ -1 +1,3 @@
obj-$(CONFIG_ARCH_TEGRA) += fuse/
obj-$(CONFIG_ARCH_TEGRA) += common.o

30
drivers/soc/tegra/common.c Normal file
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@ -0,0 +1,30 @@
/*
* Copyright (C) 2014 NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/of.h>
#include <soc/tegra/common.h>
static const struct of_device_id tegra_machine_match[] = {
{ .compatible = "nvidia,tegra20", },
{ .compatible = "nvidia,tegra30", },
{ .compatible = "nvidia,tegra114", },
{ .compatible = "nvidia,tegra124", },
{ }
};
bool soc_is_tegra(void)
{
struct device_node *root;
root = of_find_node_by_path("/");
if (!root)
return false;
return of_match_node(tegra_machine_match, root) != NULL;
}

14
include/soc/tegra/common.h Normal file
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@ -0,0 +1,14 @@
/*
* Copyright (C) 2014 NVIDIA Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __SOC_TEGRA_COMMON_H__
#define __SOC_TEGRA_COMMON_H__
bool soc_is_tegra(void);
#endif /* __SOC_TEGRA_COMMON_H__ */