From: Bryan Wu <cooloney@kernel.org>
Date: Tue, 18 Nov 2008 09:48:22 +0000 (+0800)
Subject: Blackfin arch: fix bug - gpio_bank() macros messed up bank number caculating with... 
X-Git-Tag: v2.6.29-rc1~189^2~143
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=397861cd8046549957a04d34a0b97b267cbb9589;p=pandora-kernel.git

Blackfin arch: fix bug - gpio_bank() macros messed up bank number caculating with positioning a gpio

The whole story:

Before BF51x merged, all the MAX_BLACKFIN_GPIOS are integral multiple of GPIO_BANKSIZE (= 16).
But BF51x provides MAX_BLACKFIN_GPIOS = 40 which includes 3 banks and the 3rd bank has only 8
GPIO pins.

Therefore, gpio_bank() macros is correct when you try to find a GPIO in which bank (GPIO_35 is
in bank 2). But on BF51x gpio_bank(MAX_BLACKFIN_GPIOS) only gives out 2 banks instead of 3
banks for some static array initialization.

This patch add a new macros gpio_bank_n() and GPIO_BANK_NUM to do bank number caculating and
remain the gpio_bank() macros for positioning a gpio in which bank.

Signed-off-by: Bryan Wu <cooloney@kernel.org>
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