diff options
| -rw-r--r-- | drivers/firewire/core-transaction.c | 18 | ||||
| -rw-r--r-- | include/linux/firewire.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index ac487c96bb71..e12a0a4c33f7 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -619,6 +619,7 @@ struct fw_request { struct fw_packet response; u32 request_header[4]; int ack; + u32 timestamp; u32 length; u32 data[]; }; @@ -788,6 +789,7 @@ static struct fw_request *allocate_request(struct fw_card *card, request->response.ack = 0; request->response.callback = free_response_callback; request->ack = p->ack; + request->timestamp = p->timestamp; request->length = length; if (data) memcpy(request->data, data, length); @@ -832,6 +834,22 @@ int fw_get_request_speed(struct fw_request *request) } EXPORT_SYMBOL(fw_get_request_speed); +/** + * fw_request_get_timestamp: Get timestamp of the request. + * @request: The opaque pointer to request structure. + * + * Get timestamp when 1394 OHCI controller receives the asynchronous request subaction. The + * timestamp consists of the low order 3 bits of second field and the full 13 bits of count + * field of isochronous cycle time register. + * + * Returns: timestamp of the request. + */ +u32 fw_request_get_timestamp(const struct fw_request *request) +{ + return request->timestamp; +} +EXPORT_SYMBOL_GPL(fw_request_get_timestamp); + static void handle_exclusive_region_request(struct fw_card *card, struct fw_packet *p, struct fw_request *request, diff --git a/include/linux/firewire.h b/include/linux/firewire.h index 2f467c52bdec..980019053e54 100644 --- a/include/linux/firewire.h +++ b/include/linux/firewire.h @@ -354,6 +354,7 @@ void fw_core_remove_address_handler(struct fw_address_handler *handler); void fw_send_response(struct fw_card *card, struct fw_request *request, int rcode); int fw_get_request_speed(struct fw_request *request); +u32 fw_request_get_timestamp(const struct fw_request *request); void fw_send_request(struct fw_card *card, struct fw_transaction *t, int tcode, int destination_id, int generation, int speed, unsigned long long offset, void *payload, size_t length, |