Commit 9ab5071c authored Jun 10, 2010 by Clemens Ladisch

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>

parent 8e4b50f9

drivers/firewire/core-transaction.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;

drivers/firewire/ohci.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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;