[MTK] 霍尔驱动（hall）

笔记内容

kernel

路径：kernel_device_modules-6.1/arch/arm64/boot/dts/mediatek/aiot8391p3_64_bsp.dts

kpd_gpio: kpd-gpio {
                pins-cols {
-                       pinmux = <PINMUX_GPIO44__FUNC_KPCOL0>;
+                       pinmux = <PINMUX_GPIO44__FUNC_KPCOL0>, // 保持原有列0
+                                <PINMUX_GPIO45__FUNC_KPCOL1>; // 新增列1
                        input-enable;
                        bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
                };
@@ -623,10 +624,6 @@ bootargs_ext = "";
                                <PINMUX_GPIO72__FUNC_SPIM0_MI>;
                                drive-strength = <MTK_DRIVE_6mA>;
                };
-               pin-can-standby {
-                       pinmux = <PINMUX_GPIO45__FUNC_GPIO45>;
-                       output-low;
-               };
        };
 };

@@ -1152,6 +1149,11 @@ status = "okay";
        status = "disabled";
 };

+&hall {
+  hall_eint = <&pio 12 0>;         // GPIO12作为外部中断引脚
+};

路径：kernel_device_modules-6.1/arch/arm64/boot/dts/mediatek/mt8189.dts

+  hall: hall {
+    compatible = "mediatek,hall";
+  };
+
        touch_panel0: touch-panel0 {
                compatible = "mediatek,touch-panel";
        };

路径： kernel_device_modules-6.1/arch/arm64/configs/mgk_64_k61_defconfig

+CONFIG_MTK_HALL=m           // 将霍尔驱动编译为模块(.ko)

路径：kernel_device_modules-6.1/drivers/misc/mediatek/Kconfig

+config MTK_HALL
+  tristate "MTK HALL driver"              // 三态选择：y/n/m
+       help
+               driver for mtk hall project gpio control driver

路径： kernel_device_modules-6.1/drivers/misc/mediatek/Makefile

+obj-$(CONFIG_MTK_HALL) += hall/

路径： kernel_device_modules-6.1/drivers/misc/mediatek/hall/Makefile

+ccflags-$(CONFIG_DRM_MEDIATEK_V2)      += -I$(DEVICE_MODULES_PATH)/drivers/gpu/drm/mediatek/mediatek_v2/
+
+$(warning "--->hall makefile")
+
+obj-m = hall.o

路径：kernel_device_modules-6.1/drivers/misc/mediatek/hall/hall.c

附件：hall.c 路径： kernel_device_modules-6.1/kernel/kleaf/mgk_64_k61.bzl

+    "drivers/misc/mediatek/hall/hall.ko",      // 将hall.ko加入模块列表

vendor

MTK软件生成

路径：mediatek/proprietary/tools/dct/dws/mt8189/aiot8391p3_64_bsp.dws

-                <eint_mode>false</eint_mode>
+                <eint_mode>true</eint_mode>
                 <def_mode>0</def_mode>
                 <inpull_en>true</inpull_en>
-                <inpull_selhigh>false</inpull_selhigh>
-                <def_dir>OUT</def_dir>
-                <out_high>true</out_high>
+                <inpull_selhigh>true</inpull_selhigh>
+                <def_dir>IN</def_dir>
+                <out_high>false</out_high>

路径：mediatek/proprietary/bootable/bootloader/preloader/custom/aiot8391p3_64_bsp/dct/dct/codegen.dws

-                <eint_mode>false</eint_mode>
+                <eint_mode>true</eint_mode>
                 <def_mode>0</def_mode>
                 <inpull_en>true</inpull_en>
-                <inpull_selhigh>false</inpull_selhigh>
+                <inpull_selhigh>true</inpull_selhigh>

客制化文件同步

mediatek/proprietary/bootable/bootloader/preloader/custom/Kamvas_Pad_12_EEA/dct/dct/codegen.dws
mediatek/proprietary/bootable/bootloader/preloader/custom/Kamvas_Pad_12_ROW/dct/dct/codegen.dws

device

路径：mediateksample/aiot8391p3_64_bsp/ko_order_table.csv

+hall.ko,/../kernel_device_modules-6.1/drivers/misc/mediatek/hall/hall.ko,vendor,Y,N,user/userdebug/eng