Re: [Qemu-devel] [PATCH v2] chardev/char-i2c: Implement Linux I2C character device

[Stefan Hajnoczi]

On Sat, May 04, 2019 at 07:11:19PM +0100, Ernest Esene wrote:
> Add support for Linux I2C character device for I2C device passthrough
> For example:
> -chardev linux-i2c,address=0x46,path=/dev/i2c-N,id=i2c-chardev

There is a mixture of "linux-i2c" and "char-i2c" names in this patch,
which I find confusing.  Maybe you changed your mind while writing this
code.  There are two options:

1. Call it "linux-i2c".  Other host operating systems will need their
   own equivalent objects.

2. Call it "char-i2c" and make all the parameters optional since they
   are likely to work differently on other host operating systems.

I tend towards the second approach because I think I2C is simple enough
that a single user-visible object can work on all host operating
systems.

Please make the naming consistent in the next revision of this patch.

> 
> Signed-off-by: Ernest Esene <address@hidden>
> 
> ---
> v2:
>   * Fix errors
>   * update "MAINTAINERS" file.
> ---
>  MAINTAINERS                |   6 ++
>  chardev/Makefile.objs      |   1 +
>  chardev/char-i2c.c         | 140 
> +++++++++++++++++++++++++++++++++++++++++++++
>  chardev/char.c             |   3 +
>  include/chardev/char-i2c.h |  35 ++++++++++++
>  include/chardev/char.h     |   1 +
>  qapi/char.json             |  18 ++++++
>  7 files changed, 204 insertions(+)
>  create mode 100644 chardev/char-i2c.c
>  create mode 100644 include/chardev/char-i2c.h

Please update the qemu-options.texi user documentation.

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