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[RFC PATCH v2 0/5] hw/misc: Add LED device
From: |
Philippe Mathieu-Daudé |
Subject: |
[RFC PATCH v2 0/5] hw/misc: Add LED device |
Date: |
Fri, 12 Jun 2020 19:54:35 +0200 |
Hello,
These patches are part of the GSoC unselected 'QEMU visualizer'
project. As the AVR port is not merged, I switched to microbit
to keep working on it.
This series presents a proof of concept of LED device that can
be easily connected to a GPIO.
The LED emit QMP events, so an external visualizer can display
the LED events.
Since v1: addressed Eric Blake review comments
- Added QMP rate limit
This is stable enough to be used for the GSoC UI.
Next steps planned:
- integrate Zephyr test
- have a centralized container for all the machine's LEDs, to
track state changes in a single place and send less QMP events
(grouping changes, restricted to what actually changed).
[see to include keyboard LEDs].
- look at LED array/matrix such 7segments.
Regards,
Phil.
$ git backport-diff -u rfc-v1
Key:
[----] : patches are identical
[####] : number of functional differences between upstream/downstream patch
[down] : patch is downstream-only
The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively
001/5:[0004] [FC] 'hw/misc: Add a LED device'
002/5:[0027] [FC] 'hw/misc/led: Add LED_STATUS_CHANGED QAPI event'
003/5:[----] [--] 'hw/misc/led: Add create_led_by_gpio_id() helper'
004/5:[----] [--] 'hw/arm/microbit: Add a fake LED to use as proof-of-concept
with Zephyr'
005/5:[----] [--] 'hw/arm/tosa: Use LED device for the Bluetooth led'
Philippe Mathieu-Daudé (5):
hw/misc: Add a LED device
hw/misc/led: Add LED_STATUS_CHANGED QAPI event
hw/misc/led: Add create_led_by_gpio_id() helper
hw/arm/microbit: Add a fake LED to use as proof-of-concept with Zephyr
hw/arm/tosa: Use LED device for the Bluetooth led
qapi/led.json | 47 ++++++++++++++++
qapi/qapi-schema.json | 1 +
include/hw/misc/led.h | 45 +++++++++++++++
hw/arm/microbit.c | 3 +
hw/arm/tosa.c | 7 +--
hw/misc/led.c | 126 ++++++++++++++++++++++++++++++++++++++++++
MAINTAINERS | 7 +++
hw/arm/Kconfig | 2 +
hw/misc/Kconfig | 3 +
hw/misc/Makefile.objs | 1 +
hw/misc/trace-events | 3 +
qapi/Makefile.objs | 2 +-
12 files changed, 242 insertions(+), 5 deletions(-)
create mode 100644 qapi/led.json
create mode 100644 include/hw/misc/led.h
create mode 100644 hw/misc/led.c
--
2.21.3