X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0730-Fix-poll-rate-on-touchscreen-3238.patch;fp=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0730-Fix-poll-rate-on-touchscreen-3238.patch;h=b47c8190fc3ce253e54e079f54979c8d964105b5;hb=67dcc43f3a22dc3a7ac07a7065971b426feeb043;hp=0000000000000000000000000000000000000000;hpb=47a93a810f78adce5a130d287f82b28e9b54313c;p=openwrt%2Fstaging%2Fchunkeey.git

diff --git a/target/linux/brcm2708/patches-4.19/950-0730-Fix-poll-rate-on-touchscreen-3238.patch b/target/linux/brcm2708/patches-4.19/950-0730-Fix-poll-rate-on-touchscreen-3238.patch
new file mode 100644
index 0000000000..b47c8190fc
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0730-Fix-poll-rate-on-touchscreen-3238.patch
@@ -0,0 +1,29 @@
+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
+Subject: [PATCH] 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>
+---
+ 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(&regs, ts->ts_base, sizeof(struct ft5406_regs));
+ 		iowrite8(99,
+ 			 ts->ts_base +