2019-09-19 14:43:19 +00:00
|
|
|
From a37a706547897d77b3194fc507b2546197def430 Mon Sep 17 00:00:00 2001
|
|
|
|
|
From: James Hughes <JamesH65@users.noreply.github.com>
|
|
|
|
|
Date: Tue, 17 Sep 2019 16:22:09 +0100
|
2019-12-23 12:42:55 +00:00
|
|
|
Subject: [PATCH] Fix poll rate on touchscreen (#3238)
|
2019-09-19 14:43:19 +00:00
|
|
|
|
|
|
|
|
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>
|
|
|
|
|
---
|
|
|
|
|
drivers/input/touchscreen/rpi-ft5406.c | 2 +-
|
|
|
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
|
|
|
|
|
|
--- a/drivers/input/touchscreen/rpi-ft5406.c
|
|
|
|
|
+++ b/drivers/input/touchscreen/rpi-ft5406.c
|
|
|
|
|
@@ -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(®s, ts->ts_base, sizeof(struct ft5406_regs));
|
|
|
|
|
iowrite8(99,
|
|
|
|
|
ts->ts_base +
|
