[coreboot-gerrit] [L] Change in coreboot[main]: drivers/intel/touch: Add Intel Touch Controller driver

[Cliff Huang (Code Review)]

Attention is currently required from: Bora Guvendik, Intel coreboot Reviewers, Jérémy Compostella, Kyoung Il Kim, Paul Menzel, Subrata Banik.

Hello Bora Guvendik, Intel coreboot Reviewers, Jérémy Compostella, Kyoung Il Kim, Subrata Banik, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/85198?usp=email

to look at the new patch set (#16).

Change subject: drivers/intel/touch: Add Intel Touch Controller driver
......................................................................

drivers/intel/touch: Add Intel Touch Controller driver

THC is a hardware component that interfaces between a touch sensor and
the system's SPI or I2C bus. This driver publishes data into the
Secondary System Descriptor Table (SSDT).

This driver generates the following ACPI objects:
- Device Specific Method (_DSM)
- Current Resource Settings (_CRS)
- Power resource with Status (_STA), _ON, and _OFF methods
- Device Specific Data (_DSD) for THC-I2C
- Device Reset (_RST) for THC-SPI

Template device configuration for the following supported devices:
- Wacom: THC-SPI touchscreen only
- Elan: both THC-SPI and THC-I2C touchscreen
- Hynitron: THC-I2C touchpad only

The configuration is spitted into device, SoC, and MB specific.
- SoC-specific:
Implement soc_get_thc_hidi2c_info and soc_get_thc_hidspi_info functions
for SoC-specific configurations. Theses can be placed in the SoC's
chip.c.
- device-specific:
This driver provides the device-specific configuration for the
supported devices; otherwise, require information via the device tree
for unsupported/generic devices.
- MB-specific:
The MB-specific, such as LTR value, needs to be provided in the device
tree.

BUG=none
TEST=Select the DRIVERS_INTEL_TOUCH option on a motherboard
     with the necessary configurations, and verify that the THC ACPI
     tables are generated in the SSDT.

Signed-off-by: Cliff Huang 
Signed-off-by: Jeremy Compostella 
Change-Id: Ibcd2a75a41460dee67aebdc61ee9e85fa98b71bf
---
A src/drivers/intel/touch/Kconfig
A src/drivers/intel/touch/Makefile.mk
A src/drivers/intel/touch/chip.h
A src/drivers/intel/touch/elan.h
A src/drivers/intel/touch/hynitron.h
A src/drivers/intel/touch/touch.c
A src/drivers/intel/touch/wacom.h
7 files changed, 930 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/98/85198/16