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authorFrédéric Brière <fbriere@fbriere.net>2011-05-29 15:08:04 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-07 09:35:57 -0700
commitb9b24558f7d36c550b5cf0b550a8926f8c03cdbd (patch)
tree35bf3afc3ff13a8f09e1d45af7d25dd19ad2e53c /drivers/tty
parent5bf8f501e05930364b345ed8710c5b1a13207134 (diff)
parport/serial: add support for Timedia/SUNIX cards to parport_serial
Timedia/SUNIX PCI cards with both serial and parallel ports are currently supported by 8250_pci and parport_pc individually. Moving that support into parport_serial allows using both types of ports at the same time. This was successfully tested with a SUNIX 4079T. Signed-off-by: Frédéric Brière <fbriere@fbriere.net> Acked-by: Alan Cox <alan@linux.intel.com> Cc: linux-serial@vger.kernel.org Cc: linux-parport@lists.infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250_pci.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250_pci.c b/drivers/tty/serial/8250_pci.c
index 9b119fe9257f..e1d4668f86ae 100644
--- a/drivers/tty/serial/8250_pci.c
+++ b/drivers/tty/serial/8250_pci.c
@@ -575,6 +575,28 @@ static const struct timedia_struct {
{ 8, timedia_eight_port }
};
+/*
+ * There are nearly 70 different Timedia/SUNIX PCI serial devices. Instead of
+ * listing them individually, this driver merely grabs them all with
+ * PCI_ANY_ID. Some of these devices, however, also feature a parallel port,
+ * and should be left free to be claimed by parport_serial instead.
+ */
+static int pci_timedia_probe(struct pci_dev *dev)
+{
+ /*
+ * Check the third digit of the subdevice ID
+ * (0,2,3,5,6: serial only -- 7,8,9: serial + parallel)
+ */
+ if ((dev->subsystem_device & 0x00f0) >= 0x70) {
+ dev_info(&dev->dev,
+ "ignoring Timedia subdevice %04x for parport_serial\n",
+ dev->subsystem_device);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
static int pci_timedia_init(struct pci_dev *dev)
{
const unsigned short *ids;
@@ -1463,6 +1485,7 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.device = PCI_DEVICE_ID_TIMEDIA_1889,
.subvendor = PCI_VENDOR_ID_TIMEDIA,
.subdevice = PCI_ANY_ID,
+ .probe = pci_timedia_probe,
.init = pci_timedia_init,
.setup = pci_timedia_setup,
},