linux-kernel - Re: [alsa-devel] [PATCH v2] soc/lapis: add machine driver

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]

Date:	Tue, 6 Dec 2011 10:25:19 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Tomoya MORINAGA <tomoya.rohm@...il.com>
Cc:	"Austin, Brian" <Brian.Austin@...rus.com>,
	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Mike Frysinger <vapier@...too.org>,
	"qi.wang@...el.com" <qi.wang@...el.com>,
	Takashi Iwai <tiwai@...e.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"yong.y.wang@...el.com" <yong.y.wang@...el.com>,
	"kok.howg.ewe@...el.com" <kok.howg.ewe@...el.com>,
	Daniel Mack <zonque@...il.com>, Liam Girdwood <lrg@...com>,
	"joel.clark@...el.com" <joel.clark@...el.com>
Subject: Re: [alsa-devel] [PATCH v2] soc/lapis: add machine driver

On Tue, Dec 06, 2011 at 11:37:52AM +0900, Tomoya MORINAGA wrote:

> Thanks.  However, i2c access code is not included in Samsung.
> Though OMAP includes i2c access code like below,
>   omap/sdp3430.c: twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
>   omap/sdp3430.c: twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
> this code doesn't seem applicable for me.

> Could you show best practice for i2c access of machine driver?

I2C access by machine drivers is not good practice.  If you must do it
for some reason use the standard ASoC functions to read and write
registers.
--
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/