linux-kernel - I2C class bitmask

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Date:	Thu, 21 May 2015 14:07:31 -0700
From:	York Sun <yorksun@...escale.com>
To:	Lee Jones <lee.jones@...aro.org>
CC:	<linux-kernel@...r.kernel.org>, <linux-i2c@...r.kernel.org>
Subject: I2C class bitmask

Lee,

Is there any convention regarding I2C class bitmask? I see only three are
defined for 3.12.19 and four for 4.0

I2C_CLASS_HWMON, I2C_CLASS_DDC, I2C_CLASS_SPD, I2C_CLASS_DEPRECATED

I am working on a clock chip driver (SI5338) and trying to detect them (multiple
chips in i2c mux). It would be a lot easier to have its own class, like
I2C_CLASS_CLOCK. It is trivial to add a line to i2c.h file. Just checking if
this is a bad idea.

York
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