[nvidia-6.14-next] Add Mediatek EINT driver for NVIDIA CX7 hotplug management

debian.nvidia-6.14/config/annotations

@@ -224,6 +224,7 @@ CONFIG_CC_HAS_SIGN_RETURN_ADDRESS               policy<{'arm64': '-'}>
 CONFIG_CC_VERSION_TEXT                          policy<{'amd64': '"x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0"', 'arm64': '"aarch64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0"'}>
 CONFIG_CGROUP_RESCTRL                           policy<{'amd64': '-', 'arm64': '-'}>
 CONFIG_CPUFREQ_ARCH_CUR_FREQ                    policy<{'amd64': 'y'}>
+CONFIG_EINT_MTK_HP                              policy<{'arm64': 'm'}>
 CONFIG_DRM_PANIC_SCREEN_QR_CODE                 policy<{'amd64': '-', 'arm64': '-'}>
 CONFIG_EC_HUAWEI_GAOKUN                         policy<{'arm64': 'n'}>
 CONFIG_FTRACE_SORT_STARTUP_TEST                 policy<{'amd64': 'n', 'arm64': 'n'}>

drivers/pinctrl/mediatek/Kconfig

@@ -10,6 +10,15 @@ config EINT_MTK
 	default y if PINCTRL_MTK || PINCTRL_MTK_MOORE
 	default PINCTRL_MTK_PARIS
 
+config EINT_MTK_HP
+	tristate "MediaTek HP Driver"
+	depends on EINT_MTK
+	help
+	  Say yes here to support NICs cable plug in/out test.
+	  It will disable pcie link when plug out and enable
+	  pcie link after plug in cable.
+	  This is particularly useful for MediaTek MT8901 SoC.
+
 config PINCTRL_MTK
 	bool
 	depends on OF

drivers/pinctrl/mediatek/Makefile

@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 # Core
 obj-$(CONFIG_EINT_MTK)			+= mtk-eint.o
+obj-$(CONFIG_EINT_MTK_HP)		+= mtk-eint-hotplug.o
 obj-$(CONFIG_PINCTRL_MTK)		+= pinctrl-mtk-common.o
 obj-$(CONFIG_PINCTRL_MTK_V2)		+= pinctrl-mtk-common-v2.o
 obj-$(CONFIG_PINCTRL_MTK_MTMIPS)	+= pinctrl-mtmips.o