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| author | Paul Mundt | 2010-09-23 13:09:38 +0200 |
|---|---|---|
| committer | Paul Mundt | 2010-10-04 18:15:47 +0200 |
| commit | 44629f57accccbb8e6d443246fe6f51b42f7f781 (patch) | |
| tree | b75bab4a39a2be40f58a9d6daac4a208035300fe /arch/sh/kernel/irq.c | |
| parent | sh: pfc: Fix up BUG() triggered by gpiolib debugfs lookups. (diff) | |
| download | kernel-qcow2-linux-44629f57accccbb8e6d443246fe6f51b42f7f781.tar.gz kernel-qcow2-linux-44629f57accccbb8e6d443246fe6f51b42f7f781.tar.xz kernel-qcow2-linux-44629f57accccbb8e6d443246fe6f51b42f7f781.zip | |
sh: intc: Implement reverse mapping for IRQs to per-controller IDs.
This implements a scheme roughly analogous to the PowerPC virtual to
hardware IRQ mapping, which we use for IRQ to per-controller ID mapping.
This makes it possible for drivers to use the IDs directly for lookup
instead of hardcoding the vector.
The main motivation for this work is as a building block for dynamically
allocating virtual IRQs for demuxing INTC events sharing a single INTEVT
in addition to a common masking source.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/irq.c')
0 files changed, 0 insertions, 0 deletions