mb/google/hatch/scout: Add i2c HID driver
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 <rehang@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62591
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
diff --git a/src/mainboard/google/hatch/variants/scout/gpio.c b/src/mainboard/google/hatch/variants/scout/gpio.c
index 218d3db..5515436 100644
--- a/src/mainboard/google/hatch/variants/scout/gpio.c
+++ b/src/mainboard/google/hatch/variants/scout/gpio.c
@@ -66,6 +66,8 @@
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..8e6bc77 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_DW2_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