diff options
| author | Frédéric Brière <fbriere@fbriere.net> | 2011-05-29 21:08:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-06-07 18:35:57 +0200 |
| commit | b9b24558f7d36c550b5cf0b550a8926f8c03cdbd (patch) | |
| tree | 35bf3afc3ff13a8f09e1d45af7d25dd19ad2e53c /drivers/tty/serial/8250_pci.c | |
| parent | serial: 8250_pci: add .probe member to struct pci_serial_quirk (diff) | |
| download | linux-b9b24558f7d36c550b5cf0b550a8926f8c03cdbd.tar.xz linux-b9b24558f7d36c550b5cf0b550a8926f8c03cdbd.zip | |
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/serial/8250_pci.c')
| -rw-r--r-- | drivers/tty/serial/8250_pci.c | 23 |
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, }, |