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serial: exar: Add support for Sealevel 7xxxC serial cards

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Add support for Sealevel 7xxxC serial cards.

This patch:
* Adds IDs to recognize 7xxxC cards from Sealevel Systems.
* Updates exar_pci_probe() to set nr_ports to last two bytes of primary
  dev ID for these cards.

Signed-off-by: Matthew Howell <matthew.howell@sealevel.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2301191440010.22558@tstest-VirtualBox
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthew Howell 2023-01-19 14:40:29 -05:00 committed by Greg Kroah-Hartman
parent 2cbafffbf6
commit 14ee78d593
1 changed files with 14 additions and 0 deletions
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14
drivers/tty/serial/8250/8250_exar.c
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@ -43,6 +43,12 @@
#define PCI_DEVICE_ID_EXAR_XR17V4358 0x4358
#define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358
#define PCI_DEVICE_ID_SEALEVEL_710xC 0x1001
#define PCI_DEVICE_ID_SEALEVEL_720xC 0x1002
#define PCI_DEVICE_ID_SEALEVEL_740xC 0x1004
#define PCI_DEVICE_ID_SEALEVEL_780xC 0x1008
#define PCI_DEVICE_ID_SEALEVEL_716xC 0x1010
#define UART_EXAR_INT0 0x80
#define UART_EXAR_8XMODE 0x88 /* 8X sampling rate select */
#define UART_EXAR_SLEEP 0x8b /* Sleep mode */
@ -638,6 +644,8 @@ exar_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *ent)
nr_ports = BIT(((pcidev->device & 0x38) >> 3) - 1);
else if (board->num_ports)
nr_ports = board->num_ports;
else if (pcidev->vendor == PCI_VENDOR_ID_SEALEVEL)
nr_ports = pcidev->device & 0xff;
else
nr_ports = pcidev->device & 0x0f;
@ -864,6 +872,12 @@ static const struct pci_device_id exar_pci_tbl[] = {
EXAR_DEVICE(COMMTECH, 4224PCI335, pbn_fastcom335_4),
EXAR_DEVICE(COMMTECH, 2324PCI335, pbn_fastcom335_4),
EXAR_DEVICE(COMMTECH, 2328PCI335, pbn_fastcom335_8),
EXAR_DEVICE(SEALEVEL, 710xC, pbn_exar_XR17V35x),
EXAR_DEVICE(SEALEVEL, 720xC, pbn_exar_XR17V35x),
EXAR_DEVICE(SEALEVEL, 740xC, pbn_exar_XR17V35x),
EXAR_DEVICE(SEALEVEL, 780xC, pbn_exar_XR17V35x),
EXAR_DEVICE(SEALEVEL, 716xC, pbn_exar_XR17V35x),
{ 0, }
};
MODULE_DEVICE_TABLE(pci, exar_pci_tbl);