Commit 055a2d93 authored Sep 17, 2019 by James Hughes Committed by Phil Elwell Sep 17, 2019

Fix poll rate on touchscreen (#3238)

Was running at 25Hz, rather than he expected 60. Only been doing it
for the last 5 years....

Replace msleep_interruptible with usleep_range as the msleep call
is not accurate for times < 20ms.

Fixes: https://github.com/raspberrypi/linux/issues/3227



Signed-off-by: James Hughes <james.hughes@raspberrypi.org>

parent 2b1731f8

drivers/input/touchscreen/rpi-ft5406.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -78,7 +78,7 @@ static int ft5406_thread(void *arg)

		while (!kthread_should_stop()) {
		/* 60fps polling */
		msleep_interruptible(17);
		usleep_range(16600, 16700);
		memcpy_fromio(&regs, ts->ts_base, sizeof(struct ft5406_regs));
		iowrite8(99,
		ts->ts_base +