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mb/google/sarien: Using HID over I2C to enable Melf TouchScreen 

Current Melfas touchscreen driver cannot unregister ifself when
connecting without Melfas touchscreen or connecting with other devices.
And Melfas touchscreen FW can use I2C and HID over I2C driver, so
switch to using HID over I2C driver.

BUG=b:122710830
BRANCH=master
TEST=Verify touchscreen on sarien works with this change.

Signed-off-by: Chris Zhou <chris_zhou@compal.corp-partner.google.com>
Change-Id: If04a2904a0f72a6c8363ab2c9865926c71cb5186
Reviewed-on: https://review.coreboot.org/c/31062
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
This commit is contained in:
Chris Zhou 2019-01-24 16:09:42 +08:00 committed by Patrick Georgi
parent df3064227f
commit daeaa772a2
1 changed files with 11 additions and 8 deletions
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19
src/mainboard/google/sarien/variants/sarien/devicetree.cb
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@ -221,14 +221,17 @@ chip soc/intel/cannonlake
end end
device pci 14.5 off end # SDCard device pci 14.5 off end # SDCard
device pci 15.0 on device pci 15.0 on
chip drivers/i2c/generic chip drivers/i2c/hid
register "hid" = ""MLFS0000"" register "generic.hid" = ""ACPI0C50""
register "desc" = ""Melfas Touchscreen"" register "generic.desc" = ""Touchscreen""
register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_C23_IRQ)" register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_C23_IRQ)"
register "probed" = "1" register "generic.probed" = "1"
register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_E7)" register "generic.enable_gpio" =
register "enable_delay_ms" = "5" "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_E7)"
register "has_power_resource" = "1" register "generic.enable_delay_ms" = "5"
register "generic.enable_off_delay_ms" = "100"
register "generic.has_power_resource" = "1"
register "hid_desc_reg_offset" = "0x0"
device i2c 10 on end device i2c 10 on end
end end
end # I2C #0 end # I2C #0