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| author | Clemens Ladisch <clemens@ladisch.de> | 2010-06-10 10:26:48 +0400 |
|---|---|---|
| committer | Clemens Ladisch <clemens@ladisch.de> | 2010-06-10 10:26:48 +0400 |
| commit | 9ab5071cd4a16001e4ba790172a7da5e4172462b (patch) | |
| tree | bb1ba598d4f2df93b661411c833b60bb953e3390 /drivers/firewire | |
| parent | 8e4b50f94e8c1435a3e0ece42b7f97bc857d0145 (diff) | |
| download | linux-9ab5071cd4a16001e4ba790172a7da5e4172462b.tar.xz | |
firewire: add CSR CYCLE_TIME write support
The specification requires that CYCLE_TIME is writable so that it can be
initialized, so we better implement it.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/core-transaction.c | 3 | ||||
| -rw-r--r-- | drivers/firewire/ohci.c | 7 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index 9a7d3ec23f2b..e3925f67ec12 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -1097,6 +1097,9 @@ static void handle_registers(struct fw_card *card, struct fw_request *request, if (TCODE_IS_READ_REQUEST(tcode) && length == 4) *data = cpu_to_be32(card->driver-> read_csr_reg(card, CSR_CYCLE_TIME)); + else if (tcode == TCODE_WRITE_QUADLET_REQUEST) + card->driver->write_csr_reg(card, CSR_CYCLE_TIME, + be32_to_cpu(*data)); else rcode = RCODE_TYPE_ERROR; break; diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index a55fbbce9e79..777811a736b2 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -1996,6 +1996,13 @@ static void ohci_write_csr_reg(struct fw_card *card, int csr_offset, u32 value) flush_writes(ohci); break; + case CSR_CYCLE_TIME: + reg_write(ohci, OHCI1394_IsochronousCycleTimer, value); + reg_write(ohci, OHCI1394_IntEventSet, + OHCI1394_cycleInconsistent); + flush_writes(ohci); + break; + default: WARN_ON(1); break; |