Re: [PATCH] mfd: cros_ec: move cros_ec_dev driver to MFD subdir.

[Lee Jones]

On Mon, 25 Sep 2017, Enric Balletbo i Serra wrote:

> The cros_ec_dev serves multiple purposes, one is register dinamically the
> MFD subdevices by checking the features available in a specific ChromeOS
> Embedded Controller, hence there are different calls to mfd_add_devices.
> The first time we upstreamed this driver was placed in
> drivers/platform/chrome, but call mfd_add_devices outside MFD is wrong.
> As cros_ec_dev driver is strongly related to the MFD cros-ec-core would
> make sense move the driver to the mfd subdir.
> 
> This patch also fixes a small module loading issue, the name of the driver
> in the C code was not matching their Makefile names, this prevented the
> driver from loaded as module.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
> ---
>  drivers/mfd/Kconfig                                 | 9 +++++++++
>  drivers/mfd/Makefile                                | 4 ++++
>  drivers/{platform/chrome => mfd}/cros_ec_debugfs.c  | 0
>  drivers/{platform/chrome => mfd}/cros_ec_debugfs.h  | 0
>  drivers/{platform/chrome => mfd}/cros_ec_dev.c      | 5 ++++-
>  drivers/{platform/chrome => mfd}/cros_ec_dev.h      | 0
>  drivers/{platform/chrome => mfd}/cros_ec_lightbar.c | 0
>  drivers/{platform/chrome => mfd}/cros_ec_sysfs.c    | 0
>  drivers/{platform/chrome => mfd}/cros_ec_vbc.c      | 0
>  drivers/platform/chrome/Kconfig                     | 9 ---------
>  drivers/platform/chrome/Makefile                    | 4 ----
>  11 files changed, 17 insertions(+), 14 deletions(-)
>  rename drivers/{platform/chrome => mfd}/cros_ec_debugfs.c (100%)
>  rename drivers/{platform/chrome => mfd}/cros_ec_debugfs.h (100%)
>  rename drivers/{platform/chrome => mfd}/cros_ec_dev.c (99%)
>  rename drivers/{platform/chrome => mfd}/cros_ec_dev.h (100%)
>  rename drivers/{platform/chrome => mfd}/cros_ec_lightbar.c (100%)
>  rename drivers/{platform/chrome => mfd}/cros_ec_sysfs.c (100%)
>  rename drivers/{platform/chrome => mfd}/cros_ec_vbc.c (100%)

This is not what I had in mind.

Only the MFD portion (the part which registers other devices) should
live in drivers/mfd.  Everything else should either live in their
respective subsystem(s) or in drivers/platform.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org â Open source software for ARM SoCs
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