page-types: whitespace alignment

[safe/jmp/linux-2.6] / Documentation / input / rotary-encoder.txt

diff --git a/Documentation/input/rotary-encoder.txt b/Documentation/input/rotary-encoder.txt
index 435102a..3a6aec4 100644 (file)
--- a/Documentation/input/rotary-encoder.txt
+++ b/Documentation/input/rotary-encoder.txt
@@ -67,7 +67,12 @@ data with it.
 struct rotary_encoder_platform_data is declared in
 include/linux/rotary-encoder.h and needs to be filled with the number of
 steps the encoder has and can carry information about externally inverted
-signals (because of used invertig buffer or other reasons).
+signals (because of an inverting buffer or other reasons). The encoder
+can be set up to deliver input information as either an absolute or relative
+axes. For relative axes the input event returns +/-1 for each step. For
+absolute axes the position of the encoder can either roll over between zero
+and the number of steps or will clamp at the maximum and zero depending on
+the configuration.
 
 Because GPIO to IRQ mapping is platform specific, this information must
 be given in seperately to the driver. See the example below.
@@ -85,6 +90,8 @@ be given in seperately to the driver. See the example below.
 static struct rotary_encoder_platform_data my_rotary_encoder_info = {
        .steps          = 24,
        .axis           = ABS_X,
+       .relative_axis  = false,
+       .rollover       = false,
        .gpio_a         = GPIO_ROTARY_A,
        .gpio_b         = GPIO_ROTARY_B,
        .inverted_a     = 0,