linux-kernel - Re: [PATCH 1/2] mfd: intel-m10-bmc: add Max10 BMC chip support for Intel FPGA PAC

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Date:   Tue, 14 Jul 2020 14:05:20 +0800
From:   Xu Yilun <yilun.xu@...el.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linux-kernel@...r.kernel.org, trix@...hat.com,
        matthew.gerlach@...ux.intel.com, russell.h.weight@...el.com,
        lgoncalv@...hat.com, Wu Hao <hao.wu@...el.com>, yilun.xu@...el.com
Subject: Re: [PATCH 1/2] mfd: intel-m10-bmc: add Max10 BMC chip support for
  Intel FPGA PAC

On Mon, Jul 13, 2020 at 10:17:08AM +0100, Lee Jones wrote:
> On Mon, 13 Jul 2020, Xu Yilun wrote:
> 
> > This patch implements the basic functions of the BMC chip for some Intel
> > FPGA PCIe Acceleration Cards (PAC). The BMC is implemented using the
> > intel max10 CPLD.
> > 
> > This BMC chip is connected to FPGA by a SPI bus. To provide reliable
> > register access from FPGA, an Avalon Memory-Mapped (Avmm) transaction
> > protocol over the SPI bus is used between host and slave.
> > 
> > This driver implements the basic register access with the regmap framework.
> > The mfd cells array is empty now as a placeholder.
> > 
> > Signed-off-by: Xu Yilun <yilun.xu@...el.com>
> > Signed-off-by: Wu Hao <hao.wu@...el.com>
> > Signed-off-by: Matthew Gerlach <matthew.gerlach@...ux.intel.com>
> > Signed-off-by: Russ Weight <russell.h.weight@...el.com>
> > Signed-off-by: Tom Rix <trix@...hat.com>
> > ---
> >  .../ABI/testing/sysfs-driver-intel-m10-bmc         |  15 +
> >  drivers/mfd/Kconfig                                |  13 +
> >  drivers/mfd/Makefile                               |   3 +
> >  drivers/mfd/intel-m10-bmc-main.c                   | 176 ++++
> 
> >  drivers/mfd/intel-spi-avmm.c                       | 904 +++++++++++++++++++++
> 
> This does not belong in MFD.
> 
> Please consider moving it to drivers/spi.

OK, I could make the intel-spi-avmm.c as a separate module in other
folder.

Since it is an implementation of regmap, is it better we move it to
drivers/base/regmap?

> 
> >  drivers/mfd/intel-spi-avmm.h                       |  35 +
> >  include/linux/mfd/intel-m10-bmc.h                  |  57 ++
> >  7 files changed, 1203 insertions(+)
> >  create mode 100644 Documentation/ABI/testing/sysfs-driver-intel-m10-bmc
> >  create mode 100644 drivers/mfd/intel-m10-bmc-main.c
> >  create mode 100644 drivers/mfd/intel-spi-avmm.c
> >  create mode 100644 drivers/mfd/intel-spi-avmm.h
> >  create mode 100644 include/linux/mfd/intel-m10-bmc.h
> 
> -- 
> Lee Jones [李琼斯]
> Senior Technical Lead - Developer Services
> Linaro.org │ Open source software for Arm SoCs
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