diff options
Diffstat (limited to 'drivers/firewire/ohci.c')
| -rw-r--r-- | drivers/firewire/ohci.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 1dcc2e427eb..51a55808d88 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -171,6 +171,7 @@ struct fw_ohci { int request_generation; /* for timestamping incoming requests */ unsigned quirks; unsigned int pri_req_max; + unsigned int features; u32 bus_time; bool is_root; @@ -1694,7 +1695,7 @@ static int ohci_enable(struct fw_card *card, { struct fw_ohci *ohci = fw_ohci(card); struct pci_dev *dev = to_pci_dev(card->device); - u32 lps, seconds, irqs; + u32 lps, seconds, version, irqs; int i, ret; if (software_reset(ohci)) { @@ -1747,10 +1748,19 @@ static int ohci_enable(struct fw_card *card, reg_write(ohci, OHCI1394_IsochronousCycleTimer, seconds << 25); ohci->bus_time = seconds & ~0x3f; + version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff; + if (version >= OHCI_VERSION_1_1) { + reg_write(ohci, OHCI1394_InitialChannelsAvailableHi, + 0xfffffffe); + ohci->features |= FEATURE_CHANNEL_31_ALLOCATED; + } + /* Get implemented bits of the priority arbitration request counter. */ reg_write(ohci, OHCI1394_FairnessControl, 0x3f); ohci->pri_req_max = reg_read(ohci, OHCI1394_FairnessControl) & 0x3f; reg_write(ohci, OHCI1394_FairnessControl, 0); + if (ohci->pri_req_max != 0) + ohci->features |= FEATURE_PRIORITY_BUDGET; ar_context_run(&ohci->ar_request_ctx); ar_context_run(&ohci->ar_response_ctx); @@ -2124,12 +2134,8 @@ static void ohci_write_csr_reg(struct fw_card *card, int csr_offset, u32 value) static unsigned int ohci_get_features(struct fw_card *card) { struct fw_ohci *ohci = fw_ohci(card); - unsigned int features = 0; - - if (ohci->pri_req_max != 0) - features |= FEATURE_PRIORITY_BUDGET; - return features; + return ohci->features; } static void copy_iso_headers(struct iso_context *ctx, void *p) |