diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0730-Fix-poll-rate-on-touchscreen-3238.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0730-Fix-poll-rate-on-touchscreen-3238.patch | 29 |
1 files changed, 29 insertions, 0 deletions
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(®s, ts->ts_base, sizeof(struct ft5406_regs)); + iowrite8(99, + ts->ts_base + |