[PATCH v3 1/2] input: Add new sun4i-ts driver for Allwinner sunxi SoC's rtp controller
From: Maxime Ripard <hidden>
Date: 2014-05-10 12:24:39
Also in:
linux-devicetree, linux-input
Hi Hans, Thanks a lot for reposting this. On Sat, May 10, 2014 at 12:47:05PM +0200, Hans de Goede wrote:
quoted hunk
Note the sun4i-ts controller is capable of detecting a second touch, but when a second touch is present then the accuracy becomes so bad the reported touch location is not useable. The original android driver contains some complicated heuristics using the aprox. distance between the 2 touches to see if the user is making a pinch open / close movement, and then reports emulated multi-touch events around the last touch coordinate (as the dual-touch coordinates are worthless). These kinds of heuristics are just asking for trouble (and don't belong in the kernel). So this driver offers straight forward, reliable single touch functionality only. Signed-off-by: Hans de Goede <redacted> --- .../bindings/input/touchscreen/sun4i.txt | 15 ++ drivers/input/touchscreen/Kconfig | 10 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/sun4i-ts.c | 262 +++++++++++++++++++++ 4 files changed, 288 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/sun4i.txt create mode 100644 drivers/input/touchscreen/sun4i-ts.cdiff --git a/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt b/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt new file mode 100644 index 0000000..e45927e --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt@@ -0,0 +1,15 @@ +sun4i resistive touchscreen controller +-------------------------------------- + +Required properties: + - compatible: "allwinner,sun4i-ts"
In between, I changed the compatible of this driver to sun4i-a10-ts to match the pattern used everywhere else. You should probably update it in your driver as well :) Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20140510/a1d4ffc8/attachment.sig>