linux-kernel - Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH

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Date:	Tue, 24 Aug 2010 06:22:59 -0700
From:	Greg KH <gregkh@...e.de>
To:	Masayuki Ohtak <masa-korg@....okisemi.com>
Cc:	meego-dev@...go.com, LKML <linux-kernel@...r.kernel.org>,
	yong.y.wang@...el.com, qi.wang@...el.com,
	andrew.chih.howe.khor@...el.com, arjan@...ux.intel.com,
	alan@...ux.intel.com, margie.foster@...el.com,
	Tomoya MORINAGA <morinaga526@....okisemi.com>
Subject: Re: [MeeGo-Dev][PATCH] Topcliff: Update PCH_PHUB driver to 2.6.35

On Tue, Aug 24, 2010 at 03:47:06PM +0900, Masayuki Ohtak wrote:
> Hi Greg,
> 
> We have modified our phub driver for your indication.
> Please check below.
> 
> Best Regards, Ohtake(OKISEMI).
> 
> ---
> Packet hub driver of Topcliff PCH
> 
> Topcliff PCH is the platform controller hub that is going to be used in
> Intel's upcoming general embedded platform. All IO peripherals in
> Topcliff PCH are actually devices sitting on AMBA bus. Packet hub is
> a special converter device in Topcliff PCH that translate AMBA transactions
> to PCI Express transactions and vice versa. Thus packet hub helps present
> all IO peripherals in Topcliff PCH as PCIE devices to IA system.
> Topcliff PCH has MAC address and Option ROM data.
> These data are in SROM which is connected to PCIE bus.
> Packet hub driver of Topcliff PCH can access MAC address and Option ROM data in
> SROM via sysfs interface.
> 
> Signed-off-by: Masayuki Ohtake <masa-korg@....okisemi.com>
> ---
>  Documentation/ABI/testing/sysfs-module |   14 +
>  drivers/misc/Kconfig                   |    9 +
>  drivers/misc/Makefile                  |    1 +
>  drivers/misc/pch_phub.c                |  719 ++++++++++++++++++++++++++++++++
>  4 files changed, 743 insertions(+), 0 deletions(-)
>  create mode 100644 Documentation/ABI/testing/sysfs-module
>  create mode 100755 drivers/misc/pch_phub.c
> 
> diff --git a/Documentation/ABI/testing/sysfs-module b/Documentation/ABI/testing/sysfs-module
> new file mode 100644
> index 0000000..fe07ffa
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-module
> @@ -0,0 +1,14 @@
> +What:		/sys/module/pch_phub/drivers/pci:pch_phub/<dev>/pch_mac

Please don't put a ':' in your driver name.

> +Date:		August 2010
> +KernelVersion:	2.6.35
> +Contact:	masa-korg@....okisemi.com
> +Description:	Write/read GbE MAC address.
> +Users:		masa-korg@....okisemi.com

You are really going to be the only user of this file?

> +
> +What:		/sys/module/pch_phub/drivers/pci:pch_phub/<dev>/pch_firmware
> +Date:		August 2010
> +KernelVersion:	2.6.35
> +Contact:	masa-korg@....okisemi.com
> +Description:	Write/read Option ROM data.
> +Users:		masa-korg@....okisemi.com
> +
> diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
> index 26386a9..756f832 100644
> --- a/drivers/misc/Kconfig
> +++ b/drivers/misc/Kconfig
> @@ -353,6 +353,15 @@ config VMWARE_BALLOON
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called vmware_balloon.
>  
> +config PCH_PHUB
> +	tristate "PCH Packet Hub of Intel Topcliff"
> +	depends on PCI
> +	help
> +	  This driver is for PCH(Platform controller Hub) PHUB(Packet Hub) of
> +	  Intel Topcliff which is an IOH(Input/Output Hub) for x86 embedded
> +	  processor. The Topcliff has MAC address and Option ROM data in SROM.
> +	  This driver can access MAC address and Option ROM data in SROM.
> +

Please add the wording "To compile this driver..." here as well.

Your driver code looks much better, nice job.

thanks,

greg k-h
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