Re: [PATCH] i3c: master: dw: split dw-i3c-master.c into master and bus specific parts

Boris Brezillon
2018-11-22T20:02:08Z

On Thu, 22 Nov 2018 17:54:54 +0000
Vitor Soares <vitor.soares@synopsys.com> wrote:

> From: Vitor Soares <soares@synopsys.com>
>
> This patch slipts dw-i3c-master.c into three pieces:
> dw-i3c-master.c - contains the code that interacts directly with the
> core in master mode.
>
> dw-i3c-platdrv.c - contains the code specific to the platform driver.
>
> dw-i3c-core.h - contains the definitions and declarations shared by
> dw-i3c-master and dw-i3c-platdrv
>
> This patch will allow SOC integrators to add their code specific to
> DesignWare I3C IP.

Isn't it too early to do this change? Can't we wait until we have a SoC
that actually embeds this IP?

>
> Signed-off-by: Vitor Soares <soares@synopsys.com>
> ---
> drivers/i3c/master/Kconfig | 9 +-
> drivers/i3c/master/Makefile | 5 +-
> drivers/i3c/master/dw-i3c-core.h | 214 ++++++++++++++++++++++++++
> drivers/i3c/master/dw-i3c-master.c | 299 ++----------------------------------
> drivers/i3c/master/dw-i3c-platdrv.c | 112 ++++++++++++++

I'd prefer to have a dw/ subdir where you'd place all dw files.

> 5 files changed, 349 insertions(+), 290 deletions(-)
> create mode 100644 drivers/i3c/master/dw-i3c-core.h
> create mode 100644 drivers/i3c/master/dw-i3c-platdrv.c
>
> diff --git a/drivers/i3c/master/Kconfig b/drivers/i3c/master/Kconfig
> index 8ee1ce6..fdc6e46 100644
> --- a/drivers/i3c/master/Kconfig
> +++ b/drivers/i3c/master/Kconfig
> @@ -5,9 +5,14 @@ config CDNS_I3C_MASTER
> help
> Enable this driver if you want to support Cadence I3C master block.
>
> -config DW_I3C_MASTER
> - tristate "Synospsys DesignWare I3C master driver"
> +config DW_I3C_CORE
> + tristate
> +
> +config DW_I3C_PLATFORM
> + tristate "Synospsys DesignWare I3C Platform driver"
> + select DW_I3C_CORE
> depends on I3C
> + depends on HAS_IOMEM
> depends on !(ALPHA || PARISC)
> # ALPHA and PARISC needs {read,write}sl()
> help
> diff --git a/drivers/i3c/master/Makefile b/drivers/i3c/master/Makefile
> index fc53939..004ad1c 100644
> --- a/drivers/i3c/master/Makefile
> +++ b/drivers/i3c/master/Makefile
> @@ -1,2 +1,5 @@
> obj-$(CONFIG_CDNS_I3C_MASTER) += i3c-master-cdns.o
> -obj-$(CONFIG_DW_I3C_MASTER) += dw-i3c-master.o
> +obj-$(CONFIG_DW_I3C_CORE) += dw-i3c-core.o
> +dw-i3c-core-objs := dw-i3c-master.o
> +obj-$(CONFIG_DW_I3C_PLATFORM) += dw-i3c-platform.o
> +dw-i3c-platform-objs := dw-i3c-platdrv.o

Do we really have to create one module for the core and one per SoC?
Can't we have everything in the same .ko?