| From | Arnd Bergmann <> | Date | Fri, 9 Apr 2021 09:55:53 +0200 | Subject | Re: [PATCH v2 16/21] ipmi: kcs_bmc: Add a "raw" character device interface |
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On Fri, Mar 19, 2021 at 7:31 AM Andrew Jeffery <andrew@aj.id.au> wrote: > > The existing IPMI chardev encodes IPMI behaviours as the name suggests. > However, KCS devices are useful beyond IPMI (or keyboards), as they > provide a means to generate IRQs and exchange arbitrary data between a > BMC and its host system.
I only noticed the series after Joel asked about the DT changes on the arm side. One question though:
How does this related to the drivers/input/serio/ framework that also talks to the keyboard controller for things that are not keyboards? Are these separate communication channels on adjacent I/O ports, or does there need to be some arbitration?
Arnd
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