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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 Google Inc.
* Copyright (C) 2015 Intel Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
Scope (\_SB.PCI0.I2C1)
{
Device (STSA)
{
Name (_HID, "SYTS7508")
Name (_CID, "PNP0C50")
Name (_UID, 4)
Name (ISTP, 0) /* TouchScreen */
/* Fetch HidDescriptorAddress, Register offset in the
* I2C device at which the HID descriptor can be read
*/
Method (_DSM, 4, NotSerialized)
{
If (LEqual (Arg0, ToUUID (
"3cdff6f7-4267-4555-ad05-b30a3d8938de")))
{
// DSM Revision
If (LEqual (Arg2, Zero))
{
If (LEqual (Arg1, One))
{
Return (Buffer (One)
{
0x03
})
}
Else
{
Return (Buffer (One)
{
0x00
})
}
}
// HID Function
If (LEqual (Arg2, One))
{
Return (0x20)
}
}
Else
{
Return (Buffer (One)
{
0x00
})
}
Return (Zero)
}
Method(_CRS, 0x0, NotSerialized)
{
Name (BUF0, ResourceTemplate ()
{
I2cSerialBus(
0x20, /* SlaveAddress */
ControllerInitiated, /* SlaveMode */
400000, /* ConnectionSpeed */
AddressingMode7Bit, /* AddressingMode */
"\\_SB.PCI0.I2C1", /* ResourceSource */
)
GpioInt (Level, ActiveLow, ExclusiveAndWake, PullDefault,,
"\\_SB.GPNC") { BOARD_TOUCH_GPIO_INDEX }
})
Return (BUF0)
}
Method (_STA)
{
If (LEqual (\S1EN, 1)) {
Return (0xF)
} Else {
Return (0x0)
}
}
Name (_PRW, Package() { BOARD_TOUCHSCREEN_WAKE_GPIO, 0x3 })
/* Allow device to power off in S0 */
Name (_S0W, 4)
}
}
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