-- My I2C and HID kernel config options --
theodis@gentoo-laptop ~ $ gunzip -c /proc/config.gz | egrep "(I2C|HID).*(=m|=y)"
CONFIG_BT_HIDP=y
CONFIG_REGMAP_I2C=y
CONFIG_MOUSE_ELAN_I2C=m
CONFIG_MOUSE_ELAN_I2C_I2C=y
CONFIG_MOUSE_ELAN_I2C_SMBUS=y
CONFIG_MOUSE_SYNAPTICS_I2C=m
CONFIG_SERIAL_SC16IS7XX_I2C=y
CONFIG_I2C=y
CONFIG_ACPI_I2C_OPREGION=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_SMBUS=m
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_I801=m
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
CONFIG_I2C_SLAVE=y
CONFIG_MFD_DA9052_I2C=y
CONFIG_HTC_I2CPLD=y
CONFIG_MFD_WM831X_I2C=y
CONFIG_MFD_WM8350_I2C=y
CONFIG_SND_SOC_I2C_AND_SPI=y
CONFIG_HID=y
CONFIG_HIDRAW=y
CONFIG_HID_GENERIC=y
CONFIG_HID_A4TECH=y
CONFIG_HID_APPLE=y
CONFIG_HID_BELKIN=y
CONFIG_HID_CHERRY=y
CONFIG_HID_CHICONY=y
CONFIG_HID_CYPRESS=y
CONFIG_HID_EZKEY=y
CONFIG_HID_GYRATION=y
CONFIG_HID_ITE=y
CONFIG_HID_KENSINGTON=y
CONFIG_HID_LOGITECH=y
CONFIG_HID_REDRAGON=y
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
CONFIG_HID_MULTITOUCH=m
CONFIG_HID_NTRIG=y
CONFIG_HID_PANTHERLORD=y
CONFIG_HID_PETALYNX=y
CONFIG_HID_SAMSUNG=y
CONFIG_HID_SONY=y
CONFIG_HID_SUNPLUS=y
CONFIG_HID_TOPSEED=y
CONFIG_USB_HID=y
CONFIG_HID_PID=y
CONFIG_USB_HIDDEV=y
CONFIG_I2C_HID_ACPI=m
CONFIG_I2C_HID_CORE=m
CONFIG_RTC_I2C_AND_SPI=y
CONFIG_INTEL_HID_EVENT=m

-- My loaded kernel modules --
theodis@gentoo-laptop ~ $ lsmod
Module                  Size  Used by
x86_pkg_temp_thermal    20480  0
i2c_i801               28672  0
i2c_smbus              16384  1 i2c_i801
intel_hid              20480  0
i2c_hid_acpi           16384  0
i2c_hid                28672  1 i2c_hid_acpi

-- Loaded i2c and hid kernel modules when booting SystemRescue --
theodis@gentoo-laptop ~ $ cat /sysrescuestuff/mods | egrep "(i2c|hid)"
hid_multitouch         32768  0
i2c_i801               36864  0
i2c_smbus              20480  1 i2c_i801
i2c_hid                32768  0
mac_hid                16384  0
intel_hid              24576  0
sparse_keymap          16384  1 intel_hid
i2c_algo_bit           16384  1 i915

-- My kernel messages related to i2c --
theodis@gentoo-laptop ~ $ dmesg | egrep -C 3 i2c
[   11.096867] input: Intel HID events as /devices/platform/INT33D5:00/input/input15
[   11.116422] i801_smbus 0000:00:1f.4: SPD Write Disable is set
[   11.116475] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt
[   11.116628] i2c i2c-8: 2/2 memory slots populated (from DMI)
[   11.116728] ath9k 0000:01:00.0 wlp1s0: renamed from wlan0
[   11.117033] i2c i2c-8: Successfully instantiated SPD at 0x50
[   11.133685] r8169 0000:02:00.0 eno0: renamed from eth0
[   11.134383] random: crng init done
[   11.486687] Generic FE-GE Realtek PHY r8169-200:00: attached PHY driver (mii_bus:phy_addr=r8169-200:00, irq=MAC)

-- Kernel messages related to i2c when booting off SystemRescue --
theodis@gentoo-laptop ~ $ cat /sysrescuestuff/dmesg | egrep -C 3 i2c
[   33.346398] input: PC Speaker as /devices/platform/pcspkr/input/input8
[   33.353446] i801_smbus 0000:00:1f.4: SPD Write Disable is set
[   33.353543] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt
[   33.354356] i2c i2c-8: 2/2 memory slots populated (from DMI)
[   33.354764] i2c i2c-8: Successfully instantiated SPD at 0x50
[   33.373156] idma64 idma64.0: Found Intel integrated DMA 64-bit
[   33.376394] i2c_hid i2c-HTIX5288:00: supply vdd not found, using dummy regulator
[   33.376421] i2c_hid i2c-HTIX5288:00: supply vddl not found, using dummy regulator
[   33.401198] scsi_io_completion_action: 38 callbacks suppressed
[   33.401203] sr 3:0:0:1: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE cmd_age=0s
[   33.401207] sr 3:0:0:1: [sr0] tag#0 Sense Key : Hardware Error [current]
--
[   33.631700] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   33.654440] usbcore: registered new interface driver btusb
[   33.670114] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   33.677574] input: HTIX5288:00 0911:5288 Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-9/i2c-HTIX5288:00/0018:0911:5288.0001/input/input10
[   33.677666] input: HTIX5288:00 0911:5288 Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-9/i2c-HTIX5288:00/0018:0911:5288.0001/input/input11
[   33.677725] hid-generic 0018:0911:5288.0001: input,hidraw0: I2C HID v1.00 Mouse [HTIX5288:00 0911:5288] on i2c-HTIX5288:00
[   33.691111] sr 3:0:0:1: [sr0] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE cmd_age=0s
[   33.691116] sr 3:0:0:1: [sr0] tag#0 Sense Key : Hardware Error [current]
[   33.691119] sr 3:0:0:1: [sr0] tag#0 Add. Sense: No additional sense information
--
[   34.200420] input: HDA Intel PCH HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input16
[   34.200444] input: HDA Intel PCH HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17
[   34.200476] input: HDA Intel PCH HDMI/DP,pcm=10 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18
[   34.208085] input: HTIX5288:00 0911:5288 Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-9/i2c-HTIX5288:00/0018:0911:5288.0001/input/input19
[   34.208139] input: HTIX5288:00 0911:5288 Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-9/i2c-HTIX5288:00/0018:0911:5288.0001/input/input20
[   34.208166] hid-multitouch 0018:0911:5288.0001: input,hidraw0: I2C HID v1.00 Mouse [HTIX5288:00 0911:5288] on i2c-HTIX5288:00
[   34.253355] mousedev: PS/2 mouse device common for all mice
[   37.749653] Generic FE-GE Realtek PHY r8169-200:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-200:00, irq=IGNORE)
[   38.029789] r8169 0000:02:00.0 eno0: Link is Down