added/revised some device relevant kernel config options to get the

touchpad support (Synaptics TouchPad) for certain hardware (DELL
Latitude) finally running.

Author: jens-maus

buildroot-external/kernel/6.6/device-support.config

@@ -100,3 +100,63 @@ CONFIG_STAGING=y
 CONFIG_DRM_DISPLAY_HELPER=y
 CONFIG_DRM_TTM=y
 CONFIG_DRM_BUDDY=y
+
+# enable I2C HID support
+CONFIG_I2C_HID=m
+CONFIG_I2C_HID_ACPI=m
+CONFIG_I2C_HID_OF=m
+CONFIG_I2C_HID_CORE=m
+
+# enable DESIGNWARE I2C/PCI support for touchpads and other
+CONFIG_I2C_DESIGNWARE_CORE=y
+CONFIG_I2C_DESIGNWARE_SLAVE=y
+CONFIG_I2C_DESIGNWARE_PLATFORM=y
+CONFIG_I2C_DESIGNWARE_BAYTRAIL=y
+CONFIG_I2C_DESIGNWARE_PCI=y
+
+# enable special multifunction device drivers
+CONFIG_MFD_INTEL_LPSS=m
+CONFIG_MFD_INTEL_LPSS_ACPI=m
+CONFIG_MFD_INTEL_LPSS_PCI=m
+
+# enable Synaptics RMI4 bus support
+CONFIG_RMI4_CORE=m
+CONFIG_RMI4_I2C=m
+CONFIG_RMI4_SPI=m
+CONFIG_RMI4_SMB=m
+CONFIG_RMI4_F03=y
+CONFIG_RMI4_F03_SERIO=m
+CONFIG_RMI4_2D_SENSOR=y
+CONFIG_RMI4_F11=y
+CONFIG_RMI4_F12=y
+CONFIG_RMI4_F30=y
+CONFIG_RMI4_F34=y
+CONFIG_RMI4_F3A=y
+# CONFIG_RMI4_F54 is not set
+CONFIG_RMI4_F55=y
+
+# enable special support for Thinkpad systems/laptops
+CONFIG_THINKPAD_ACPI=m
+# CONFIG_THINKPAD_ACPI_DEBUGFACILITIES is not set
+# CONFIG_THINKPAD_ACPI_DEBUG is not set
+# CONFIG_THINKPAD_ACPI_UNSAFE_LEDS is not set
+CONFIG_THINKPAD_ACPI_VIDEO=y
+CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y
+CONFIG_THINKPAD_LMI=m
+
+# enable special support for DELL systems/laptops
+CONFIG_X86_PLATFORM_DRIVERS_DELL=y
+CONFIG_DELL_LAPTOP=m
+# CONFIG_DELL_RBU is not set
+CONFIG_DELL_RBTN=m
+CONFIG_DELL_SMBIOS=m
+CONFIG_DELL_SMBIOS_WMI=y
+CONFIG_DELL_SMBIOS_SMM=y
+CONFIG_DELL_SMO8800=m
+CONFIG_DELL_WMI=m
+CONFIG_DELL_WMI_PRIVACY=y
+CONFIG_DELL_WMI_AIO=m
+CONFIG_DELL_WMI_DESCRIPTOR=m
+CONFIG_DELL_WMI_DDV=m
+CONFIG_DELL_WMI_LED=m
+CONFIG_DELL_WMI_SYSMAN=m

buildroot-external/kernel/6.6/global.config

@@ -37,21 +37,13 @@ CONFIG_MOUSE_PS2_ELANTECH_SMBUS=y
 CONFIG_MOUSE_PS2_SENTELIC=y
 CONFIG_MOUSE_PS2_TOUCHKIT=y
 CONFIG_MOUSE_PS2_FOCALTECH=y
-CONFIG_MOUSE_PS2_VMMOUSE=y
 CONFIG_MOUSE_PS2_SMBUS=y
 CONFIG_MOUSE_SERIAL=m
-CONFIG_MOUSE_APPLETOUCH=m
-CONFIG_MOUSE_BCM5974=m
-CONFIG_MOUSE_CYAPA=m
 CONFIG_MOUSE_ELAN_I2C=m
 CONFIG_MOUSE_ELAN_I2C_I2C=y
 CONFIG_MOUSE_ELAN_I2C_SMBUS=y
-CONFIG_MOUSE_VSXXXAA=m
-CONFIG_MOUSE_GPIO=m
 CONFIG_MOUSE_SYNAPTICS_I2C=m
 CONFIG_MOUSE_SYNAPTICS_USB=m
-CONFIG_HID_RMI=m
-CONFIG_HID_MULTITOUCH=m
 
 # disable CAN support
 # CONFIG_CAN is not set
@@ -297,6 +289,10 @@ CONFIG_CFG80211_WEXT=y
 
 # human interface devices support
 CONFIG_HID=y
+CONFIG_HID_RMI=m
+CONFIG_HID_MULTITOUCH=m
+CONFIG_HID_ALPS=m
+CONFIG_HID_LENOVO=m
 CONFIG_HIDRAW=y
 CONFIG_UHID=y