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mb/google/eve: switch touchpad devicetree to i2c-hid and cros_ec i2c device 

The new touchpad firmware uses i2c-hid instead of custom reporting
protocol. The touchpad also exposed another slave address (0x1e) for
kernel to communicate with the touchpad EC.

Change-Id: Iecaf14f7b8aed836120569e9ade9c3115bc00264
Signed-off-by: Wei-Ning Huang <wnhuang@google.com>
Reviewed-on: https://review.coreboot.org/19461
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Wei-Ning Huang 2017-04-24 18:53:22 +08:00 committed by Duncan Laurie
parent ca3815b4c5
commit 267e4a5824
1 changed files with 10 additions and 4 deletions
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14
src/mainboard/google/eve/devicetree.cb
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@ -241,12 +241,18 @@ chip soc/intel/skylake
end end
end # I2C #1 end # I2C #1
device pci 15.2 on device pci 15.2 on
chip drivers/i2c/generic chip drivers/i2c/hid
register "hid" = ""GOOG5400"" register "generic.hid" = ""ACPI0C50""
register "desc" = ""Touchpad"" register "generic.desc" = ""Touchpad""
register "irq" = "ACPI_IRQ_LEVEL_LOW(GPP_B3_IRQ)" register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_B3_IRQ)"
register "hid_desc_reg_offset" = "0x1"
device i2c 49 on end device i2c 49 on end
end end
chip drivers/i2c/generic
register "hid" = ""GOOG0008""
register "desc" = ""Touchpad EC Interface""
device i2c 1e on end
end
end # I2C #2 end # I2C #2
device pci 15.3 off end # I2C #3 device pci 15.3 off end # I2C #3
device pci 16.0 on end # Management Engine Interface 1 device pci 16.0 on end # Management Engine Interface 1