On Dec 3, 2008, at 1:27 PM, Anton Vorontsov wrote:
With this API we're able to set a QE pin to the GPIO mode or a
dedicated
peripheral function.
The API relies on the fact that QE gpio controllers are registered. If
they aren't, the API won't work (gracefully though).
There is one caveat though: if anybody occupied the node->data
before us,
or overwrote it, then bad things will happen. Luckily this is all in
the
platform code that we fully control, so this should never happen.
I could implement more checks (for example we could create a list of
successfully registered QE controllers, and compare the node->data
in the
qe_pin_request()), but this is unneeded if nobody is going to do silly
things behind our back.
Signed-off-by: Anton Vorontsov <avoront...@ru.mvista.com>
---
arch/powerpc/include/asm/qe.h | 21 ++++
arch/powerpc/sysdev/qe_lib/gpio.c | 195 ++++++++++++++++++++++++++++
+++++++++
2 files changed, 216 insertions(+), 0 deletions(-)
applied to next
- k
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