Change in coreboot[master]: scout: i2c HID driver for Ilitek touchscreen

[Rehan Ghori (Code Review)]

Rehan Ghori has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/62591 )

Change subject: scout: i2c HID driver for Ilitek touchscreen
......................................................................

scout: i2c HID driver for Ilitek touchscreen

Add HID driver for i2c-1 for Ilitek touchscreen.

BRANCH=None
BUG=b:187289163
TEST=Build and flash coreboot; confirm an entry for hidraw for I2C-1 for
Ilitek touchscreen.

Change-Id: I9e42c36a35654cf3e2b41f78b209f4b89e8b05bd
Signed-off-by: Rehan Ghori 
---
M src/mainboard/google/hatch/variants/scout/gpio.c
M src/mainboard/google/hatch/variants/scout/overridetree.cb
2 files changed, 21 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/62591/1

diff --git a/src/mainboard/google/hatch/variants/scout/gpio.c b/src/mainboard/google/hatch/variants/scout/gpio.c
index 218d3db..260acc8 100644
--- a/src/mainboard/google/hatch/variants/scout/gpio.c
+++ b/src/mainboard/google/hatch/variants/scout/gpio.c
@@ -1,8 +1,12 @@
 /* SPDX-License-Identifier: GPL-2.0-only */

+#include <gpio.h>
 #include <baseboard/gpio.h>
 #include <baseboard/variants.h>
 #include <commonlib/helpers.h>
+#include <types.h>
+#include <soc/gpio.h>
+#include <vendorcode/google/chromeos/chromeos.h>

static const struct pad_config gpio_table[] = {
    /* A16 : SD_OC_ODL */
@@ -66,6 +70,8 @@
    PAD_CFG_GPI_APIC(GPP_D14, NONE, PLTRST, LEVEL, INVERT),
    /* D15 : USI_RST_L */
    PAD_CFG_GPO(GPP_D15, 1, DEEP),
+	/* D16 TOUCH_INT */
+	PAD_CFG_GPI_IRQ_WAKE(GPP_D16, NONE, PLTRST, LEVEL, INVERT),

/* E2 : Not connected */
    PAD_NC(GPP_E2, NONE),
diff --git a/src/mainboard/google/hatch/variants/scout/overridetree.cb b/src/mainboard/google/hatch/variants/scout/overridetree.cb
index 1312966..cc07e2f 100644
--- a/src/mainboard/google/hatch/variants/scout/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/scout/overridetree.cb
@@ -381,7 +381,21 @@
    	device pci 15.0 off
    		# RFU - Reserved for Future Use.
    	end # I2C #0
-		device pci 15.1 on end # I2C #1, USI (Touch screen)
+		device pci 15.1 on # I2C #1, USI (Touch screen)
+			chip drivers/i2c/hid
+				register "generic.hid" = ""ILTK0001""
+				register "generic.desc" = ""ILITEK Touchscreen""
+				register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_D16_IRQ)"
+				register "generic.probed" = "1"
+				register "generic.reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D15)"
+				register "generic.reset_delay_ms" = "600"
+				register "generic.wake" = "GPE0_DW0_16"
+				register "generic.has_power_resource" = "1"
+				register "generic.disable_gpio_export_in_crs" = "1"
+				register "hid_desc_reg_offset" = "0x01"
+				device i2c 41 on end
+			end
+		end
    	device pci 15.2 on end # I2C #2, SCALER
    	device pci 15.3 on end # I2C #3, TPU
    	device pci 16.0 on  end # Management Engine Interface 1