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

[ Upstream commit 14ee78d5932afeb710c8305196a676a715bfdea8 ]

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>
Stable-dep-of: 95d698869b40 ("serial: 8250_exar: Add support for USR298x PCI Modems")
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index 3d82902bfe5b9938084c0c5359dd0191fd894cba..2c9f7210911251793fa69ff6418f11955709bcda 100644 (file)
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -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 */
@@ -600,6 +606,8 @@ 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;
 
@@ -826,6 +834,12 @@ 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);