From: Sonic Zhang <sonic.zhang@analog.com>
Date: Mon, 1 Jul 2013 03:24:46 +0000 (+0800)
Subject: Blackfin: bfin_gpio: Use proper mask for comparing pfunc
X-Git-Tag: v3.13-rc1~70^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f70de486b2dd21b60705e57afecdc5f6a79be4e7;p=pandora-kernel.git

Blackfin: bfin_gpio: Use proper mask for comparing pfunc

For BF537_FAMILY, when offset != 1, the mask is 1.
Thus add proper mask for comparing pfunc with function.

Also has small refactor for better readability.
In portmux_setup(), it looks odd having "pmux &= ~(3 << 1);"
while in current code we do pmux |= (function << offset);.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
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