[M] Change in coreboot[main]: mb/google/fatcat: Add Intel Touch support for touchscreen and touchpad

[Cliff Huang (Code Review)]

Attention is currently required from: Bora Guvendik, Jayvik Desai, Jérémy Compostella, Kapil Porwal, Kyoung Il Kim, Paul Menzel, Pranava Y N, Subrata Banik, Wonkyu Kim.

Hello Bora Guvendik, Jayvik Desai, Jérémy Compostella, Kapil Porwal, Kyoung Il Kim, Pranava Y N, Subrata Banik, Wonkyu Kim, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/85200?usp=email

to look at the new patch set (#37).

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: mb/google/fatcat: Add Intel Touch support for touchscreen and touchpad
......................................................................

mb/google/fatcat: Add Intel Touch support for touchscreen and touchpad

This commit introduces support for touch functionalities on the
Google Fatcat board( Please see docu # 818597). Changes include:

- Configuration for building with the THC driver
- Support for touchscreen devices in both THC-I2C and THC-SPI modes
  - Rework is necessary for touchscreen use in THC-SPI mode on Fatcat
    board
  - The ELAN BOM37A device is supported in THC-I2C mode
  - The ELAN BOM36 device is supported in THC-SPI mode
- Support for the HYNITRON HFW68H touchpad device in THC-I2C mode
  - A rework is required to switch the interrupt pad from GPP_A13 to
    GPP_F18 for touchpad use in THC-I2C mode
- Introduction of variant-specific touch.h header file
- Wake support from S0ix state for both touchscreen and touchpad
  across multiple modes: LPSS-I2C, THC-I2C, and THC-SPI
- PMC GPE DW0 is reconfigured to GPP_F for Touchpad in LPSS mode in
  variant.c for wake support

BUG=none
TEST=
1. Set the CBI firmware configuration for touchscreen to
   TOUCHSCREEN_LPSS_I2C and/or TOUCHPAD to TOUCHPAD_LPSS_I2C
2. Check the ACPI objects are generated in SSDT
3. The devices should be enumerated under the /sys/class/hidraw
   directory
4. The Touchscreen and/or touchpad should function properly
   The cursor on the screen should move accordingly
5. Test wake from S0ix state via touchscreen and touchpad inputs
6. Repeat the above for the THC CBI configurations:
   touchscreen: TOUCHSCREEN_THC_I2C
   touchpad: TOUCHPAD_THC_I2C

Signed-off-by: Cliff Huang 
Change-Id: I865dbb9eed648c8f35c7f469b27a13be993ff479
---
M src/mainboard/google/fatcat/Kconfig
M src/mainboard/google/fatcat/variants/fatcat/fw_config.c
M src/mainboard/google/fatcat/variants/fatcat/gpio.c
M src/mainboard/google/fatcat/variants/fatcat/overridetree.cb
M src/mainboard/google/fatcat/variants/fatcat/variant.c
5 files changed, 183 insertions(+), 16 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/00/85200/37