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3 Commits

Author SHA1 Message Date
Linus Walleij
a80bb4c9ec unicore: gpio: Be sure to clamp return value 
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2016-01-25 18:02:26 +01:00
GuanXuetao
e5abf78b57 unicore32 io: redefine __REG(x) and re-use readl/writel funcs 
-- by advice of Arnd Bergmann

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
 2011-03-17 09:19:19 +08:00
GuanXuetao
752bcb4d02 unicore32 core architecture: interrupts ang gpio handling 
This patch implements interrupts and gpio handling.
UniCore32 has 9 gpio interrupt sources.
And gpio device operations are also here.

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
 2011-03-17 09:19:10 +08:00