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parport/serial: add support for Timedia/SUNIX cards to parport_serial

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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>
This commit is contained in:
Frédéric Brière
2011-05-29 15:08:04 -04:00
committed by Greg Kroah-Hartman
parent 5bf8f501e0
commit b9b24558f7
3 changed files with 186 additions and 54 deletions
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23
drivers/tty/serial/8250_pci.c
View File

@ -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,
},