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

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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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This commit is contained in:

Bryan Wu 2008-11-18 17:48:22 +08:00

parent 10a88a2be5

commit 397861cd80

3 changed files with 20 additions and 18 deletions

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2

arch/blackfin/include/asm/gpio.h

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30

arch/blackfin/kernel/bfin_gpio.c

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6

arch/blackfin/mach-common/ints-priority.c

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