From: Danilo Krummrich <danilokrummrich@dk-develop.de>
To: dmitry.torokhov@gmail.com, linux-input@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: linus.walleij@linaro.org
Subject: ps2-gpio: use ktime for IRQ timekeeping
Date: Tue, 15 Feb 2022 17:02:04 +0100 [thread overview]
Message-ID: <20220215160208.34826-1-danilokrummrich@dk-develop.de> (raw)
Changes since v1
================
- add patch to refactor struct ps2_gpio_data for clear separation between
RX and TX
- make all variables for IRQ timekeeping per-port and initialize them in
ps2_gpio_open()
This patch series implements the usage of ktime for IRQ timekeeping to
overcome:
(1) The resolution limitations of jiffies.
(2) Potential spurious IRQs generated by gpio controllers.
Besides that, based on the newly implemented timekeeping, it fixes a wrongly
suspected extra clock cycle for TX transfers and a race condition when
starting an immediate TX transfer based on data received from an RX transfer.
Danilo Krummrich (4):
input: ps2-gpio: refactor struct ps2_gpio_data
input: ps2-gpio: use ktime for IRQ timekeeping
input: ps2-gpio: remove tx timeout from ps2_gpio_irq_tx()
input: ps2-gpio: don't send rx data before the stop bit
drivers/input/serio/ps2-gpio.c | 180 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------------------------------
1 file changed, 116 insertions(+), 64 deletions(-)
next reply other threads:[~2022-02-15 16:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-15 16:02 Danilo Krummrich [this message]
2022-02-15 16:02 ` [PATCH 1/4] input: ps2-gpio: refactor struct ps2_gpio_data Danilo Krummrich
2022-02-15 21:54 ` Dmitry Torokhov
2022-02-15 22:23 ` Danilo Krummrich
2022-02-15 22:38 ` Dmitry Torokhov
2022-02-15 16:02 ` [PATCH 2/4] input: ps2-gpio: use ktime for IRQ timekeeping Danilo Krummrich
2022-02-15 16:02 ` [PATCH 3/4] input: ps2-gpio: remove tx timeout from ps2_gpio_irq_tx() Danilo Krummrich
2022-02-15 16:02 ` [PATCH 4/4] input: ps2-gpio: don't send rx data before the stop bit Danilo Krummrich
2022-02-15 22:56 ` ps2-gpio: use ktime for IRQ timekeeping Dmitry Torokhov
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