Input: ads7846 - support swapping x and y axes
Signed-off-by: Michael Roth <mroth@nessie.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 2b01e56..b5ad252 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -97,6 +97,8 @@
u16 x_plate_ohms;
u16 pressure_max;
+ bool swap_xy;
+
struct ads7846_packet *packet;
struct spi_transfer xfer[18];
@@ -599,6 +601,10 @@
dev_dbg(&ts->spi->dev, "DOWN\n");
#endif
}
+
+ if (ts->swap_xy)
+ swap(x, y);
+
input_report_abs(input, ABS_X, x);
input_report_abs(input, ABS_Y, y);
input_report_abs(input, ABS_PRESSURE, Rt);
@@ -917,6 +923,7 @@
ts->spi = spi;
ts->input = input_dev;
ts->vref_mv = pdata->vref_mv;
+ ts->swap_xy = pdata->swap_xy;
hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
ts->timer.function = ads7846_timer;
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index 2ea2032..51948eb 100644
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -17,6 +17,7 @@
u16 vref_mv; /* external vref value, milliVolts */
bool keep_vref_on; /* set to keep vref on for differential
* measurements as well */
+ bool swap_xy; /* swap x and y axes */
/* Settling time of the analog signals; a function of Vcc and the
* capacitance on the X/Y drivers. If set to non-zero, two samples