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| author | Paul Mundt <lethal@linux-sh.org> | 2010-09-23 13:09:38 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-10-04 18:15:47 +0200 |
| commit | 44629f57accccbb8e6d443246fe6f51b42f7f781 (patch) | |
| tree | b75bab4a39a2be40f58a9d6daac4a208035300fe /drivers/sh/Kconfig | |
| parent | sh: pfc: Fix up BUG() triggered by gpiolib debugfs lookups. (diff) | |
| download | linux-44629f57accccbb8e6d443246fe6f51b42f7f781.tar.xz 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 'drivers/sh/Kconfig')
| -rw-r--r-- | drivers/sh/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/sh/Kconfig b/drivers/sh/Kconfig index 1dc8b7ae35fb..e01ae42774af 100644 --- a/drivers/sh/Kconfig +++ b/drivers/sh/Kconfig @@ -22,3 +22,12 @@ config INTC_BALANCING vectors. If in doubt, say N. + +config INTC_MAPPING_DEBUG + bool "Expose IRQ to per-controller id mapping via debugfs" + depends on DEBUG_FS + help + This will create a debugfs entry for showing the relationship + between system IRQs and the per-controller id tables. + + If in doubt, say N. |