From: Andrew Jeffery <andrew@aj.id.au>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, openbmc@lists.ozlabs.org,
qemu-arm@nongnu.org, clg@kaod.org
Subject: [PATCH 0/3] hw: aspeed_gpio: Model new interface for the AST2600
Date: Tue, 8 Feb 2022 01:34:06 +1030 [thread overview]
Message-ID: <20220207150409.358888-1-andrew@aj.id.au> (raw)
Hello,
This series adds support for a new register interface supported by the
Aspeed GPIO controller, present in at least the AST2600.
The new interface is a single register implementing an indirect command
protocol that allows us to manipulate up to (at least) 208 GPIOs. This
makes it possible to write very simple drivers for e.g. u-boot and
jettison the need for the tedious data model required to deal with the
old register layout.
I've lightly tested the device consistency under Linux. The Linux
driver is implemented in terms of the old interface, so data model
consistency can be tested one way by poking the driver using the
libgpiod tools and then the other using devmem to drive the new
interface.
Please review!
Andrew
Andrew Jeffery (3):
hw: aspeed_gpio: Cleanup stray semicolon after switch
hw: aspeed_gpio: Split GPIOSet handling from accessors
hw: aspeed_gpio: Support the AST2600's indexed register interface
hw/gpio/aspeed_gpio.c | 305 ++++++++++++++++++++++++++++------
include/hw/gpio/aspeed_gpio.h | 3 +
2 files changed, 261 insertions(+), 47 deletions(-)
--
2.32.0
next reply other threads:[~2022-02-07 15:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-07 15:04 Andrew Jeffery [this message]
2022-02-07 15:04 ` [PATCH 1/3] hw: aspeed_gpio: Cleanup stray semicolon after switch Andrew Jeffery
2022-02-07 15:04 ` [PATCH 2/3] hw: aspeed_gpio: Split GPIOSet handling from accessors Andrew Jeffery
2022-02-07 15:04 ` [PATCH 3/3] hw: aspeed_gpio: Support the AST2600's indexed register interface Andrew Jeffery
2022-02-09 11:09 ` [PATCH 0/3] hw: aspeed_gpio: Model new interface for the AST2600 Andrew Jeffery
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