[S] Change in coreboot[main]: mb/google/nissa/var/guren: Add touch screen FTSC1000 support

[Brian Hsu (Code Review)]

Brian Hsu has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/87238?usp=email )

Change subject: mb/google/nissa/var/guren: Add touch screen FTSC1000 support
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mb/google/nissa/var/guren: Add touch screen FTSC1000 support

New Touchscreen function for Guren project.
1. Extend 1 bit [34] for the TOUCHSCREEN_SOURCE.
   SSFC range for TOUCHSCREEN_SOURCE is bit[32:34].
2. Touchscreen panel: HKO RB116AS01-2,
   and set TOUCHSCREEN_FTSC1000 to value "3"

BUG=b:391281767
BRANCH=firmware-nissa-15217.B
TEST=1. emerge-nissa coreboot chromeos-bootimage
     2. Confirm command evtest and touchscreen function is workable.

Change-Id: Icfe5f57c69d1bd98e0852a1aa3baed8c1444e4d9
Signed-off-by: Brian Hsu 
---
M src/mainboard/google/brya/variants/guren/overridetree.cb
1 file changed, 20 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/38/87238/1

diff --git a/src/mainboard/google/brya/variants/guren/overridetree.cb b/src/mainboard/google/brya/variants/guren/overridetree.cb
index 0e10689..3306e8a 100644
--- a/src/mainboard/google/brya/variants/guren/overridetree.cb
+++ b/src/mainboard/google/brya/variants/guren/overridetree.cb
@@ -29,6 +29,7 @@
    	option TOUCHSCREEN_UNPROVISIONED	0
    	option TOUCHSCREEN_ELAN0001		1
    	option TOUCHSCREEN_ILIT2901		2
+		option TOUCHSCREEN_FTSC1000		3
    end
 end

@@ -369,6 +370,25 @@
    				probe TOUCHSCREEN_SOURCE TOUCHSCREEN_ILIT2901
    			end
    		end
+
+			chip drivers/i2c/hid
+				register "generic.hid" = ""FTSC1000""
+				register "generic.desc" = ""G2TOUCH Touchscreen""
+				register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C7_IRQ)"
+				register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C1)"
+				register "generic.reset_delay_ms" = "150"
+				register "generic.reset_off_delay_ms" = "5"
+				register "generic.stop_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C6)"
+				register "generic.stop_delay_ms" = "30"
+				register "generic.stop_off_delay_ms" = "10"
+				register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_C0)"
+				register "generic.enable_delay_ms" = "45"
+				register "generic.has_power_resource" = "1"
+				register "hid_desc_reg_offset" = "0x01"
+				device i2c 38 on
+					probe TOUCHSCREEN_SOURCE TOUCHSCREEN_FTSC1000
+				end
+			end
    	end #I2C1
    	device ref i2c2 on
    		chip drivers/i2c/sx9324