serial: 8250_pci: add support for ASIX AX99100

Each of the 4 PCI functions on ASIX AX99100 PCIe to Multi I/O
Controller can be configured as a single-port serial port controller.
The subvendor id is 0x1000 when configured as serial port and MSI
interrupts are supported.

Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230724083933.3173513-4-jiaqing.zhao@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index d2d547b..62a9bd3 100644 (file)
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -67,6 +67,8 @@ static const struct pci_device_id pci_use_msi[] = {
                         0xA000, 0x1000) },
        { PCI_DEVICE_SUB(PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9922,
                         0xA000, 0x1000) },
+       { PCI_DEVICE_SUB(PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100,
+                        0xA000, 0x1000) },
        { PCI_DEVICE_SUB(PCI_VENDOR_ID_HP_3PAR, PCI_DEVICE_ID_HPE_PCI_SERIAL,
                         PCI_ANY_ID, PCI_ANY_ID) },
        { }
@@ -5557,6 +5559,14 @@ static const struct pci_device_id serial_pci_tbl[] = {
        {       PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9865,
                0xA000, 0x3004,
                0, 0, pbn_b0_bt_4_115200 },
+
+       /*
+        * ASIX AX99100 PCIe to Multi I/O Controller
+        */
+       {       PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100,
+               0xA000, 0x1000,
+               0, 0, pbn_b0_1_115200 },
+
        /* Intel CE4100 */
        {       PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CE4100_UART,
                PCI_ANY_ID,  PCI_ANY_ID, 0, 0,