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path: root/drivers/input/touchscreen/surface3_spi.c
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2017-09-11Input: surface3_spi - make const array header static, reduces object code sizeColin Ian King
Don't populate the const array header on the stack, instead make it static. Makes the object code smaller by over 180 bytes: Before: text data bss dec hex filename 6003 1536 0 7539 1d73 surface3_spi.o After: text data bss dec hex filename 5726 1632 0 7358 1cbe surface3_spi.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2016-05-27Input: surface3_spi - add surface pen support for Surface 3Stephen Just
This change creates a second input device which will handle input from a Surface Pen. The Surface Pen supplies a different packet header than touch events, so it is simple to handle one or the other. This patch handles both the newer Surface Pen with one button, and the older variant with a second button to switch to Eraser mode. Signed-off-by: Stephen Just <stephenjust@gmail.com> Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2016-05-27Input: surface3_spi - Prepare to add support for Surface PenStephen Just
Surface Pens can be supported by handling a second report type. Prepare for this change. Signed-off-by: Stephen Just <stephenjust@gmail.com> Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2016-05-19Input: add new driver for the Surface 3Benjamin Tissoires
This is a basic driver for the Surface 3. I am not so sure it will work with any firmwares as most values are encoded, but given that I only have access to my current device with its firmware and I don't have the datasheet, it should be OK for now. The Surface Pen is not supported (if it is supposed to be). I'll work on this when I get one. Tested-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>