diff options
| author |   Stefan Agner <stefan@agner.ch> | 2016-03-08 10:34:38 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-03-08 10:51:12 -0800 |
| commit | 5f2940c4a544ae9040d0feff6da06a994cc201ff (patch) | |
| tree | 086fcabe8ea4a4924702c85611bcb3dd89f14347 /drivers/input/touchscreen/ad7879.c | |
| parent | Input: ad7879 - move header to platform_data directory (diff) | |
| download | linux-dev-5f2940c4a544ae9040d0feff6da06a994cc201ff.tar.xz linux-dev-5f2940c4a544ae9040d0feff6da06a994cc201ff.zip | |
Input: ad7879 - fix default x/y axis assignment
The X/Y position measurements read from the controller are interpreted
wrong. The first measurement X+ contains the Y position, and the second
measurement Y+ the X position (see also Table 11 Register Table in the
data sheet).
The problem is already known and a swap option has been introduced:
commit 6680884a4420 ("Input: ad7879 - add option to correct xy axis")
However, the meaning of the new boolean is inverted since the underlying
values are already swapped. Let ts->swap_xy set to true actually be the
swapped configuration of the two axis.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen/ad7879.c')
| -rw-r--r-- | drivers/input/touchscreen/ad7879.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c index b32dbf389777..a770b92a9aa1 100644 --- a/drivers/input/touchscreen/ad7879.c +++ b/drivers/input/touchscreen/ad7879.c @@ -94,8 +94,8 @@ #define AD7879_TEMP_BIT (1<<1) enum { - AD7879_SEQ_XPOS = 0, - AD7879_SEQ_YPOS = 1, + AD7879_SEQ_YPOS = 0, + AD7879_SEQ_XPOS = 1, AD7879_SEQ_Z1 = 2, AD7879_SEQ_Z2 = 3, AD7879_NR_SENSE = 4, @@ -517,7 +517,9 @@ struct ad7879 *ad7879_probe(struct device *dev, u8 devid, unsigned int irq, ts->dev = dev; ts->input = input_dev; ts->irq = irq; - ts->swap_xy = pdata->swap_xy; + + /* Use swapped axis by default (backward compatibility) */ + ts->swap_xy = !pdata->swap_xy; setup_timer(&ts->timer, ad7879_timer, (unsigned long) ts); |