[PATCH v3 0/7] hw/misc: Add LED device

[Philippe Mathieu-Daudé]

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.

Since v2:
- Rebased on PCA9552
- Model intensity to be ready for PWM use (Dave)
- Remove QMP events until we get a UI visualizer (Peter)
- Remove microbit patch (Peter)

Since v1: addressed Eric Blake review comments
- Added QMP rate limit

Next steps planned:

- PoC visualizer...
- look at using a dbus backend (elmarco)
- look at LED array/matrix such 7segments.

Regards,

Phil.

Based-on: <20200620225854.31160-1-f4bug@amsat.org>

Philippe Mathieu-Daudé (7):
  hw/misc: Add a LED device
  hw/misc/led: Add helper to connect LED to GPIO output
  hw/misc/led: Emit a trace event when LED intensity has changed
  hw/arm/aspeed: Add the 3 front LEDs drived by the PCA9552 #1
  hw/misc/mps2-fpgaio: Use the LED device
  hw/misc/mps2-scc: Use the LED device
  hw/arm/tosa: Replace fprintf() calls by LED devices

 include/hw/misc/led.h         | 100 ++++++++++++++++++++++
 include/hw/misc/mps2-fpgaio.h |   1 +
 include/hw/misc/mps2-scc.h    |   1 +
 hw/arm/aspeed.c               |  17 ++++
 hw/arm/tosa.c                 |  40 +++------
 hw/misc/led.c                 | 151 ++++++++++++++++++++++++++++++++++
 hw/misc/mps2-fpgaio.c         |  13 +--
 hw/misc/mps2-scc.c            |  23 +++---
 MAINTAINERS                   |   6 ++
 hw/arm/Kconfig                |   2 +
 hw/misc/Kconfig               |   5 ++
 hw/misc/Makefile.objs         |   1 +
 hw/misc/trace-events          |   6 +-
 13 files changed, 321 insertions(+), 45 deletions(-)
 create mode 100644 include/hw/misc/led.h
 create mode 100644 hw/misc/led.c

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2.21.3