diff options
author | Matt DeVillier <matt.devillier@gmail.com> | 2017-08-20 14:48:57 -0500 |
---|---|---|
committer | Martin Roth <martinroth@google.com> | 2017-09-15 02:36:13 +0000 |
commit | e69a9c75816dd3cd6a9af50a09eb090ea00cfed4 (patch) | |
tree | 63f4440d3739a1e1efe266572f3c2e8a9e7455b5 /src/mainboard/google/cyan/acpi/touchscreen_elan.asl | |
parent | 982688a41ae91218fbb2cfbdb8ff19005ffce0f9 (diff) |
google/cyan: convert to variant configuration
Setup cyan to be the baseboard for other Google Braswell
boards, to be added in subsequent commits:
- Keep code common to all Google Braswell boards in the baseboard,
and separate out the board-specific bits into the new cyan variant.
- Define the I2C ACPI devices such that they can be easily reused for
other variants.
- Switch the trackpad/touchscreen interrupts from edge to level,
for better performance/compatibility, as was done with all previous
Google boards.
- Add code to the baseboard to allow optional variant-specific
parameters to be used for both memory and silicon init.
- Remove superfluous includes, replace some hardcoded values with
variables, and correct typos/formatting errors.
Change-Id: Iabbbad16efa9cfa79338f4e94d0771779900d8d9
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/21126
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/mainboard/google/cyan/acpi/touchscreen_elan.asl')
-rw-r--r-- | src/mainboard/google/cyan/acpi/touchscreen_elan.asl | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/mainboard/google/cyan/acpi/touchscreen_elan.asl b/src/mainboard/google/cyan/acpi/touchscreen_elan.asl new file mode 100644 index 0000000000..7100120585 --- /dev/null +++ b/src/mainboard/google/cyan/acpi/touchscreen_elan.asl @@ -0,0 +1,61 @@ +/* + * 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 (ETSA) + { + Name (_HID, "ELAN0001") + Name (_DDN, "Elan Touchscreen ") + Name (_UID, 5) + Name (ISTP, 0) /* TouchScreen */ + + Method(_CRS, 0x0, NotSerialized) + { + Name(BUF0,ResourceTemplate () + { + I2CSerialBus( + 0x10, /* SlaveAddress */ + ControllerInitiated, /* SlaveMode */ + 400000, /* ConnectionSpeed */ + AddressingMode7Bit, /* AddressingMode */ + "\\_SB.PCI0.I2C1", /* ResourceSource */ + ) + Interrupt (ResourceConsumer, Level, ActiveLow) + { + BOARD_TOUCH_IRQ + } + + } ) + 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) + } +} |