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authorDaniel Mack <daniel@caiaq.de>2009-03-04 23:27:14 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2009-03-08 16:35:53 -0700
commit73969ff0eda233f140bcbed1251431387b43f383 (patch)
treeb7dd2b670d9e03916b04469e9d38b71d69c6cd60 /include
parentb0ecc7309443dbcf1a0ce2d93f39f5d92c124d42 (diff)
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Input: generic driver for rotary encoders on GPIOs
This patch adds a generic driver for rotary encoders connected to GPIO pins of a system. It relies on gpiolib and generic hardware irqs. The documentation that also comes with this patch explains the concept and how to use the driver. Signed-off-by: Daniel Mack <daniel@caiaq.de> Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'include')
-rw-r--r--include/linux/rotary_encoder.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/rotary_encoder.h b/include/linux/rotary_encoder.h
new file mode 100644
index 00000000000..12d63a30c34
--- /dev/null
+++ b/include/linux/rotary_encoder.h
@@ -0,0 +1,13 @@
+#ifndef __ROTARY_ENCODER_H__
+#define __ROTARY_ENCODER_H__
+
+struct rotary_encoder_platform_data {
+ unsigned int steps;
+ unsigned int axis;
+ unsigned int gpio_a;
+ unsigned int gpio_b;
+ unsigned int inverted_a;
+ unsigned int inverted_b;
+};
+
+#endif /* __ROTARY_ENCODER_H__ */