linux-kernel - Re: [PATCH v6 2/2] i2c: i2c-ocores: Add support for the GRLIB port of the controller and use function pointers for getreg and setreg functions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87y5i23jp4.fsf@dell.be.48ers.dk>
Date:	Thu, 15 Nov 2012 17:38:31 +0100
From:	Peter Korsgaard <jacmet@...site.dk>
To:	Andreas Larsson <andreas@...sler.com>
Cc:	Wolfram Sang <w.sang@...gutronix.de>,
	Ben Dooks <ben-linux@...ff.org>, linux-i2c@...r.kernel.org,
	Grant Likely <grant.likely@...retlab.ca>,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	software@...sler.com
Subject: Re: [PATCH v6 2/2] i2c: i2c-ocores: Add support for the GRLIB port of the controller and use function pointers for getreg and setreg functions

>>>>> "Andreas" == Andreas Larsson <andreas@...sler.com> writes:

 Andreas> The registers in the GRLIB port of the controller are 32-bit
 Andreas> and in big endian byte order. The PRELOW and PREHIGH registers
 Andreas> are merged into one register. The subsequent registers have
 Andreas> their offset decreased accordingly. Hence the register access
 Andreas> needs to be handled in a non-standard manner using custom
 Andreas> getreg and setreg functions.

 Andreas> Add setreg and getreg functions for different register widths
 Andreas> and let oc_setreg and oc_getreg use function pointers to call
 Andreas> the appropriate functions.

 Andreas> A type is added as the data of the of match table entries. A
 Andreas> new entry with a different compatible string is added to the
 Andreas> table. The type of that entry triggers usage of the custom
 Andreas> grlib functions by setting the setreg and getreg function
 Andreas> pointers.

 Andreas> Signed-off-by: Andreas Larsson <andreas@...sler.com>

Acked-by: Peter Korsgaard <jacmet@...site.dk>

Thanks!

-- 
Bye, Peter Korsgaard
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/