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| author | Jia Hongtao <B38951@freescale.com> | 2012-02-17 10:49:03 +0800 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2012-03-16 16:15:28 -0500 |
| commit | 8626816e905e8e131663dfcae27d307df8c220d0 (patch) | |
| tree | 53d6eeed360ce02a075d8adba5b399352ddcf2c6 /arch/powerpc/platforms | |
| parent | da3b6c0534c76bc08ce5524342586138687fd106 (diff) | |
| download | linux-stable-8626816e905e8e131663dfcae27d307df8c220d0.tar.gz linux-stable-8626816e905e8e131663dfcae27d307df8c220d0.tar.bz2 linux-stable-8626816e905e8e131663dfcae27d307df8c220d0.zip | |
powerpc: add support for MPIC message register API
Some MPIC implementations contain one or more blocks of message registers
that are used to send messages between cores via IPIs. A simple API has
been added to access (get/put, read, write, etc ...) these message registers.
The available message registers are initially discovered via nodes in the
device tree. A separate commit contains a binding for the message register
nodes.
Signed-off-by: Meador Inge <meador_inge@mentor.com>
Signed-off-by: Jia Hongtao <B38951@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index 236ab67bc3a4..a35ca44ade66 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -86,6 +86,14 @@ config MPIC_WEIRD bool default n +config MPIC_MSGR + bool "MPIC message register support" + depends on MPIC + default n + help + Enables support for the MPIC message registers. These + registers are used for inter-processor communication. + config PPC_I8259 bool default n |