linux-kernel - Re: [PATCH v1 1/3] ARM64 LPC: indirect ISA PORT IO introduced

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Message-ID: <5683A3B4.7040005@huawei.com>
Date:	Wed, 30 Dec 2015 17:28:20 +0800
From:	Rongrong Zou <zourongrong@...wei.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Rongrong Zou <zourongrong@...il.com>, <minyard@....org>,
	<gregkh@...uxfoundation.org>, <catalin.marinas@....com>,
	<will.deacon@....com>, <linuxarm@...wei.com>,
	<linux-kernel@...r.kernel.org>, <benh@...nel.crashing.org>,
	<lijianhua@...wei.com>
Subject: Re: [PATCH v1 1/3] ARM64 LPC: indirect ISA PORT IO introduced

在 2015/12/30 16:59, Arnd Bergmann 写道:
> On Wednesday 30 December 2015 09:24:04 Rongrong Zou wrote:
>>>>>> diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
>>>>>> index 4043c35..98ae206 100644
>>>>>> --- a/arch/arm64/Kconfig.platforms
>>>>>> +++ b/arch/arm64/Kconfig.platforms
>>>>>> @@ -127,5 +127,8 @@ config ARCH_ZYNQMP
>>>>>>             bool "Xilinx ZynqMP Family"
>>>>>>             help
>>>>>>               This enables support for Xilinx ZynqMP Family
>>>>>> -
>>>>>> +config ARM64_INDIRECT_PIO
>>>>>> +  bool "ARM64 Indirect port I/O"
>>>>>> +  help
>>>>>> +    This enables support for ARM64 indirect port I/O
>>>>>>     endmenu
>>>>>
>>>>> The option should probably go into arch/arm64/Kconfig. Possibly you can make
>>>>> it a silent option that just gets selected whenever a driver is enabled
>>>>> that might set the callbacks.
>>>>
>>>> I try to bind it with HISILICON platform.
>>>
>>> It should be possible to build the actual driver on all platforms, at
>>> least with COMPILE_TEST.
>>
>> Sorry, I'm a little confused, can you describe it in detail?
>>
>>
>
> config ARM64_INDIRECT_PIO
> 	bool
> 	help
> 	  Any driver that provides indirect ISA I/O port access should select
> 	  this symbol


>
> config HISILICON_HI123456_LPC
> 	bool "Workaround for nonstandard ISA I/O space on Hisilicon Hi123456 SoC"
> 	depends on ARCH_HISI || COMPILE_TEST
> 	select ARM64_INDIRECT_PIO
> 	help
> 	  ...
Can it be a submenu of "Platform selection--->Hisilicon SoC Family"?



>
>
> 	Arnd
>
> .
>

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