parport: Add support for the WCH382 2S/1P multi-IO card

WCH382 is a PCI-E card with 1 LPT and 2 DB9 COM ports detected as
Serial controller: Device 1c00:3250 (rev 10) (prog-if 05 [16850])

Signed-off-by: Sergej Pupykin <ml@sergej.pp.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 31 insertions, 0 deletions

diff --git a/drivers/parport/parport_serial.c b/drivers/parport/parport_serial.c
index ee932004724f..e15b4845f7c6 100644
--- a/drivers/parport/parport_serial.c
+++ b/drivers/parport/parport_serial.c
@@ -64,6 +64,7 @@ enum parport_pc_pci_cards {
         timedia_9079c,
         wch_ch353_1s1p,
         wch_ch353_2s1p,
+        wch_ch382_2s1p,
         sunix_2s1p,
 };
 
@@ -151,6 +152,7 @@ static struct parport_pc_pci cards[] = {
         /* timedia_9079c */             { 1, { { 2, 3 }, } },
         /* wch_ch353_1s1p*/             { 1, { { 1, -1}, } },
         /* wch_ch353_2s1p*/             { 1, { { 2, -1}, } },
+        /* wch_ch382_2s1p*/             { 1, { { 2, -1}, } },
         /* sunix_2s1p */                { 1, { { 3, -1 }, } },
 };
 
@@ -257,6 +259,7 @@ static struct pci_device_id parport_serial_pci_tbl[] = {
         /* WCH CARDS */
         { 0x4348, 0x5053, PCI_ANY_ID, PCI_ANY_ID, 0, 0, wch_ch353_1s1p},
         { 0x4348, 0x7053, 0x4348, 0x3253, 0, 0, wch_ch353_2s1p},
+        { 0x1c00, 0x3250, 0x1c00, 0x3250, 0, 0, wch_ch382_2s1p},
 
         /*
          * More SUNIX variations. At least one of these has part number
@@ -494,6 +497,13 @@ static struct pciserial_board pci_parport_serial_boards[] = {
                 .base_baud      = 115200,
                 .uart_offset    = 8,
         },
+        [wch_ch382_2s1p] = {
+                .flags          = FL_BASE0,
+                .num_ports      = 2,
+                .base_baud      = 115200,
+                .uart_offset    = 8,
+                .first_offset   = 0xC0,
+        },
         [sunix_2s1p] = {
                 .flags          = FL_BASE0|FL_BASE_BARS,
                 .num_ports      = 2,
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 003679fc884b..0468e15e6f10 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1783,6 +1783,16 @@ pci_wch_ch353_setup(struct serial_private *priv,
         return pci_default_setup(priv, board, port, idx);
 }
 
+static int
+pci_wch_ch382_setup(struct serial_private *priv,
+                    const struct pciserial_board *board,
+                    struct uart_8250_port *port, int idx)
+{
+        port->port.flags |= UPF_FIXED_TYPE;
+        port->port.type = PORT_16850;
+        return pci_default_setup(priv, board, port, idx);
+}
+
 #define PCI_VENDOR_ID_SBSMODULARIO      0x124B
 #define PCI_SUBVENDOR_ID_SBSMODULARIO   0x124B
 #define PCI_DEVICE_ID_OCTPRO            0x0001
@@ -1837,6 +1847,8 @@ pci_wch_ch353_setup(struct serial_private *priv,
 #define PCI_VENDOR_ID_SUNIX             0x1fd4
 #define PCI_DEVICE_ID_SUNIX_1999        0x1999
 
+#define PCIE_VENDOR_ID_WCH              0x1c00
+#define PCIE_DEVICE_ID_WCH_CH382_2S1P   0x3250
 
 /* Unknown vendors/cards - this should not be in linux/pci_ids.h */
 #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
@@ -2528,6 +2540,14 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
                 .subdevice      = PCI_ANY_ID,
                 .setup          = pci_wch_ch353_setup,
         },
+        /* WCH CH382 2S1P card (16750 clone) */
+        {
+                .vendor         = PCIE_VENDOR_ID_WCH,
+                .device         = PCIE_DEVICE_ID_WCH_CH382_2S1P,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .setup          = pci_wch_ch382_setup,
+        },
         /*
          * ASIX devices with FIFO bug
          */
@@ -3635,6 +3655,7 @@ static const struct pci_device_id blacklist[] = {
         /* multi-io cards handled by parport_serial */
         { PCI_DEVICE(0x4348, 0x7053), }, /* WCH CH353 2S1P */
         { PCI_DEVICE(0x4348, 0x5053), }, /* WCH CH353 1S1P */
+        { PCI_DEVICE(0x1c00, 0x3250), }, /* WCH CH382 2S1P */
 };
 
 /*