From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Input close or device disable should not interact with the exported gpiolib
functionality. However that's the case. __ad7879_disable() clears the
entire AD7879_REG_CTRL2, while it should just power down the ADC and
its reference.
Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
---
drivers/input/touchscreen/ad7879.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c
index bc3b518..131f9d1 100644
--- a/drivers/input/touchscreen/ad7879.c
+++ b/drivers/input/touchscreen/ad7879.c
@@ -249,12 +249,14 @@ static void __ad7879_enable(struct ad7879 *ts)
static void __ad7879_disable(struct ad7879 *ts)
{
+ u16 reg = (ts->cmd_crtl2 & ~AD7879_PM(-1)) |
+ AD7879_PM(AD7879_PM_SHUTDOWN);
disable_irq(ts->irq);
if (del_timer_sync(&ts->timer))
ad7879_ts_event_release(ts);
- ad7879_write(ts, AD7879_REG_CTRL2, AD7879_PM(AD7879_PM_SHUTDOWN));
+ ad7879_write(ts, AD7879_REG_CTRL2, reg);
}
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe linux-input" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
