* [PATCH 0/2] soc: mediatek: Make mtk-infracfg modular
@ 2026-05-29 10:16 Justin Yeh
2026-05-29 10:16 ` [PATCH 1/2] soc: mediatek: Allow MTK_INFRACFG to be built as module Justin Yeh
2026-05-29 10:16 ` [PATCH 2/2] soc: mediatek: mtk-infracfg: Export symbols for DDK modules Justin Yeh
0 siblings, 2 replies; 3+ messages in thread
From: Justin Yeh @ 2026-05-29 10:16 UTC (permalink / raw)
To: Matthias Brugger, AngeloGioacchino Del Regno
Cc: Project_Global_Chrome_Upstream_Group, linux-kernel,
linux-arm-kernel, linux-mediatek, Justin Yeh
This series converts mtk-infracfg to be buildable as a loadable module,
allowing for more flexible kernel configurations and reduced memory
footprint on systems that don't require this functionality built-in.
Justin Yeh (2):
soc: mediatek: Allow MTK_INFRACFG to be built as module
soc: mediatek: mtk-infracfg: Export symbols for module support
drivers/soc/mediatek/Kconfig | 2 +-
drivers/soc/mediatek/mtk-infracfg.c | 9 +++++++--
include/linux/soc/mediatek/infracfg.h | 1 +
3 files changed, 9 insertions(+), 3 deletions(-)
--
2.45.2
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 1/2] soc: mediatek: Allow MTK_INFRACFG to be built as module
2026-05-29 10:16 [PATCH 0/2] soc: mediatek: Make mtk-infracfg modular Justin Yeh
@ 2026-05-29 10:16 ` Justin Yeh
2026-05-29 10:16 ` [PATCH 2/2] soc: mediatek: mtk-infracfg: Export symbols for DDK modules Justin Yeh
1 sibling, 0 replies; 3+ messages in thread
From: Justin Yeh @ 2026-05-29 10:16 UTC (permalink / raw)
To: Matthias Brugger, AngeloGioacchino Del Regno
Cc: Project_Global_Chrome_Upstream_Group, linux-kernel,
linux-arm-kernel, linux-mediatek, Justin Yeh
Change MTK_INFRACFG from bool to tristate to support building it as
a loadable kernel module (.ko) instead of being built into the kernel.
This is required for DDK (Driver Development Kit) module build, where
mtk-infracfg needs to be loaded dynamically along with other SoC
infrastructure modules.
Signed-off-by: Justin Yeh <justin.yeh@mediatek•com>
---
drivers/soc/mediatek/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig
index d7293977f06e..d28b0817ce51 100644
--- a/drivers/soc/mediatek/Kconfig
+++ b/drivers/soc/mediatek/Kconfig
@@ -38,7 +38,7 @@ config MTK_DVFSRC
best achievable performance-per-watt.
config MTK_INFRACFG
- bool "MediaTek INFRACFG Support"
+ tristate "MediaTek INFRACFG Support"
select REGMAP
help
Say yes here to add support for the MediaTek INFRACFG controller. The
--
2.45.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 2/2] soc: mediatek: mtk-infracfg: Export symbols for DDK modules
2026-05-29 10:16 [PATCH 0/2] soc: mediatek: Make mtk-infracfg modular Justin Yeh
2026-05-29 10:16 ` [PATCH 1/2] soc: mediatek: Allow MTK_INFRACFG to be built as module Justin Yeh
@ 2026-05-29 10:16 ` Justin Yeh
1 sibling, 0 replies; 3+ messages in thread
From: Justin Yeh @ 2026-05-29 10:16 UTC (permalink / raw)
To: Matthias Brugger, AngeloGioacchino Del Regno
Cc: Project_Global_Chrome_Upstream_Group, linux-kernel,
linux-arm-kernel, linux-mediatek, Justin Yeh
Export mtk_infracfg functions to allow other DDK modules (like
mtk-scpsys) to use bus protection APIs.
Changes:
- Add EXPORT_SYMBOL_GPL for set/clear bus_protection and init functions
- Remove static and __init qualifiers from mtk_infracfg_init
- Add mtk_infracfg_init() declaration to header
- Remove postcore_initcall, let dependent modules call init explicitly
- Add #include <linux/module.h> for export macros
- Add MODULE_LICENSE("GPL") metadata
This allows mtk-infracfg to be built as a DDK module (.ko) and its
functions to be used by other modules like mtk-scpsys for power domain
management.
Signed-off-by: Justin Yeh <justin.yeh@mediatek•com>
---
drivers/soc/mediatek/mtk-infracfg.c | 9 +++++++--
include/linux/soc/mediatek/infracfg.h | 1 +
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/soc/mediatek/mtk-infracfg.c b/drivers/soc/mediatek/mtk-infracfg.c
index 2acf19676af2..8a88805468cc 100644
--- a/drivers/soc/mediatek/mtk-infracfg.c
+++ b/drivers/soc/mediatek/mtk-infracfg.c
@@ -7,6 +7,7 @@
#include <linux/jiffies.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
+#include <linux/module.h>
#include <linux/soc/mediatek/infracfg.h>
#include <asm/processor.h>
@@ -43,6 +44,7 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
return ret;
}
+EXPORT_SYMBOL_GPL(mtk_infracfg_set_bus_protection);
/**
* mtk_infracfg_clear_bus_protection - disable bus protection
@@ -73,8 +75,9 @@ int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask,
return ret;
}
+EXPORT_SYMBOL_GPL(mtk_infracfg_clear_bus_protection);
-static int __init mtk_infracfg_init(void)
+int mtk_infracfg_init(void)
{
struct regmap *infracfg;
@@ -90,4 +93,6 @@ static int __init mtk_infracfg_init(void)
MT8192_INFRA_CTRL_DISABLE_MFG2ACP);
return 0;
}
-postcore_initcall(mtk_infracfg_init);
+EXPORT_SYMBOL_GPL(mtk_infracfg_init);
+
+MODULE_LICENSE("GPL");
diff --git a/include/linux/soc/mediatek/infracfg.h b/include/linux/soc/mediatek/infracfg.h
index 9956e18c5ffa..847431a7b967 100644
--- a/include/linux/soc/mediatek/infracfg.h
+++ b/include/linux/soc/mediatek/infracfg.h
@@ -454,4 +454,5 @@ int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask,
bool reg_update);
int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask,
bool reg_update);
+int mtk_infracfg_init(void);
#endif /* __SOC_MEDIATEK_INFRACFG_H */
--
2.45.2
^ permalink raw reply related [flat|nested] 3+ messages in thread
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