linux-kernel - Re: [RFC PATCH] fpga: Introduce new fpga subsystem

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Date:	Thu, 19 Sep 2013 13:22:00 +0200
From:	Michal Simek <monstr@...str.eu>
To:	Pavel Machek <pavel@...x.de>
CC:	Alan Tull <atull@...era.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Jason Cooper <jason@...edaemon.net>,
	Michal Simek <michal.simek@...inx.com>,
	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Dinh Nguyen <dinguyen@...era.com>,
	Philip Balister <philip@...ister.org>,
	Alessandro Rubini <rubini@...dd.com>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Cesar Eduardo Barros <cesarb@...arb.net>,
	Joe Perches <joe@...ches.com>,
	"David S. Miller" <davem@...emloft.net>,
	Stephen Warren <swarren@...dia.com>,
	Arnd Bergmann <arnd@...db.de>,
	David Brown <davidb@...eaurora.org>,
	Dom Cobley <popcornmix@...il.com>
Subject: Re: [RFC PATCH] fpga: Introduce new fpga subsystem

On 09/19/2013 01:17 PM, Pavel Machek wrote:
> Hi!
> 
>>> This code also creates a set of files under /sys for each separate fpga.
>>> I.e. checking status by looking at /sys/class/fpga/fpag0/status.  It
>>> would be pretty small changes to control reseting the fpga by adding a
>>> 'reset' file there also (added first to the framework, and an interface
>>> into the low level fpga manager driver).
>>
>> Status is just there and for my zynq devcfg driver I do export some status
>> bits.
>>
>> root@...alinux:~# cat /sys/class/fpga/fpga0/status
>> partial_bitstream_status: 0
>> prog_done_status: 1
>> dbg_lock_status: 0
>> seu_lock_status: 0
>> aes_en_lock_status: 0
>> aes_status: 0
>> seu_status: 0
>> spniden_status: 1
>> spiden_status: 1
>> niden_status: 1
>> dbgen_status: 1
>> dap_en_status: 7
> 
> This is single file? If so, it needs to be changed. Greg is rather
> clear about that.

Don't you have a link to these rules? I have seen any paragraph from Greg
about it but I forget where was it.

Thanks,
Michal


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform



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