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| author | Daniel Drake <dsd@laptop.org> | 2013-06-30 18:37:24 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2013-06-30 20:09:18 -0700 |
| commit | b56ece9a3ac3c9708b8f1cebf4ba24c258d40e52 (patch) | |
| tree | cfea1bda9f765bf83f1e7d7c8fb9556143c51dd5 /Documentation | |
| parent | 20c3da9f9fc6cdedca887953bbded72f7f025492 (diff) | |
| download | linux-b56ece9a3ac3c9708b8f1cebf4ba24c258d40e52.tar.gz linux-b56ece9a3ac3c9708b8f1cebf4ba24c258d40e52.tar.xz | |
Input: add OLPC AP-SP driver
The OLPC XO-1.75 and XO-4 laptops include a PS/2 touchpad and an AT
keyboard, yet they do not have a hardware PS/2 controller. Instead, a
firmware runs on a dedicated core ("Security Processor", part of the SoC)
that acts as a PS/2 controller through bit-banging.
Communication between the main cpu (Application Processor) and the
Security Processor happens via a standard command mechanism implemented
by the SoC. Add a driver for this interface to enable keyboard/mouse
input on this platform.
Original author: Saadia Baloch
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/serio/olpc,ap-sp.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/serio/olpc,ap-sp.txt b/Documentation/devicetree/bindings/serio/olpc,ap-sp.txt new file mode 100644 index 000000000000..0e72183f52bc --- /dev/null +++ b/Documentation/devicetree/bindings/serio/olpc,ap-sp.txt @@ -0,0 +1,13 @@ +OLPC AP-SP serio interface + +Required properties: +- compatible : "olpc,ap-sp" +- reg : base address and length of SoC's WTM registers +- interrupts : SP-AP interrupt + +Example: + ap-sp@d4290000 { + compatible = "olpc,ap-sp"; + reg = <0xd4290000 0x1000>; + interrupts = <40>; + } |