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author | Kyle Moffett <Kyle.D.Moffett@boeing.com> | 2011-10-19 18:58:15 (GMT) |
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committer | Kumar Gala <galak@kernel.crashing.org> | 2011-10-21 05:04:28 (GMT) |
commit | 710308ee185b3087e474fb9b205f47613c65dda4 (patch) | |
tree | f79c00c52451614f6ae4b31a43b274a512b22418 /include | |
parent | a836626cc4ddae53bfa46195a39194f21ad157af (diff) | |
download | u-boot-710308ee185b3087e474fb9b205f47613c65dda4.tar.xz |
mpc85xx: Add inline GPIO acessor functions
To ease the implementation of other MPC85xx board ports, several common
GPIO helpers are added to <asm/mpc85xx_gpio.h>.
Since each of these compiles to no more than 4-5 instructions it would
be very inefficient to call them out of line, therefore we put them
entirely in the header file.
The HWW-1U-1A board port which these were written for strongly prefers
to set multiple GPIOs as a single batch operation, so the API is
designed around that basis.
To assist other board ports, a small set of wrappers are used which
provides a standard gpio_request() interface around the MPC85xx-specific
functions. This can be enabled with CONFIG_MPC85XX_GENERIC_GPIO
Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Cc: Andy Fleming <afleming@gmail.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions