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firewire: add CSR PRIORITY_BUDGET support

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If supported by the OHCI controller, implement the PRIORITY_BUDGET
register, which is required for nodes that can use asynchronous
priority arbitration.

To allow the core to determine what features the lowlevel device
supports, add a new card driver callback.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Clemens Ladisch
2010-06-10 08:35:06 +02:00
parent 27a2329f82
commit a1a1132bd8
4 changed files with 46 additions and 0 deletions
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include/linux/firewire.h
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@@ -32,6 +32,7 @@
#define CSR_CYCLE_TIME 0x200
#define CSR_BUS_TIME 0x204
#define CSR_BUSY_TIMEOUT 0x210
#define CSR_PRIORITY_BUDGET 0x218
#define CSR_BUS_MANAGER_ID 0x21c
#define CSR_BANDWIDTH_AVAILABLE 0x220
#define CSR_CHANNELS_AVAILABLE 0x224