Add support for MOXA Mini PCIe serial boards:
- CP102N: 2 ports | RS232
- CP104N: 4 ports | RS232
- CP112N: 2 ports | RS232/RS422/RS485
- CP114N: 4 ports | RS232/RS422/RS485
- CP132N: 2 ports | RS422/RS485
- CP134N: 4 ports | RS422/RS485
Signed-off-by: Crescent CY Hsieh <crescentcy.hsieh@xxxxxxxx>
---
drivers/tty/serial/8250/8250_pci.c | 54 ++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index a010790ccfcd..a70546ac361e 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1887,6 +1887,42 @@ pci_sunix_setup(struct serial_private *priv,
return setup_port(priv, port, bar, offset, 0);
}
+#define MOXA_PUART_GPIO_EN 0x09
+#define MOXA_PUART_GPIO_OUT 0x0A
+
+#define MOXA_GPIO_SET_ALL_OUTPUT 0x0F
+
+static int pci_moxa_init(struct pci_dev *dev)
+{
+ unsigned short device = dev->device;
+ unsigned long iobar_addr = pci_resource_start(dev, 2);
+ int num_ports = (device & 0x00F0) >> 4;
+ unsigned char val;
+
+ outb(MOXA_GPIO_SET_ALL_OUTPUT, iobar_addr + MOXA_PUART_GPIO_EN);
+
+ /*
+ * Enable hardware buffer to prevent break signal output when system boot up.
+ * This hardware buffer is only supported on Mini PCIe series.
+ */
+ if (device == 0x1027 || /* MOXA_CP102N */
+ device == 0x1046 || /* MOXA_CP104N */
+ device == 0x1121 || /* MOXA_CP112N */
+ device == 0x1145 || /* MOXA_CP114N */
+ device == 0x1323 || /* MOXA_CP132N */
+ device == 0x1343) { /* MOXA_CP134N */
+ /* Set GPIO direction */
+ val = inb(iobar_addr + MOXA_PUART_GPIO_EN);
+ val |= (1 << 2);
+ outb(val, iobar_addr + MOXA_PUART_GPIO_EN);
+ /* Enable low GPIO */
+ val = inb(iobar_addr + MOXA_PUART_GPIO_OUT);
+ val &= ~(1 << 2);
+ outb(val, iobar_addr + MOXA_PUART_GPIO_OUT);
+ }
+ return num_ports;
+}
+
static int pci_moxa_setup(struct serial_private *priv,
const struct pciserial_board *board,
struct uart_8250_port *port,
@@ -1973,6 +2009,13 @@ static int pci_moxa_setup(struct serial_private *priv,
#define PCI_DEVICE_ID_MOXA_CP134EL_A 0x1342
#define PCI_DEVICE_ID_MOXA_CP138E_A 0x1381
#define PCI_DEVICE_ID_MOXA_CP168EL_A 0x1683
+/* MOXA Mini PCIe */
+#define PCI_DEVICE_ID_MOXA_CP102N 0x1027
+#define PCI_DEVICE_ID_MOXA_CP104N 0x1046
+#define PCI_DEVICE_ID_MOXA_CP112N 0x1121
+#define PCI_DEVICE_ID_MOXA_CP114N 0x1145
+#define PCI_DEVICE_ID_MOXA_CP132N 0x1323
+#define PCI_DEVICE_ID_MOXA_CP134N 0x1343
/* Unknown vendors/cards - this should not be in linux/pci_ids.h */
#define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
@@ -2638,6 +2681,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.device = PCI_ANY_ID,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
+ .init = pci_moxa_init,
.setup = pci_moxa_setup,
},
{
@@ -5365,6 +5409,16 @@ static const struct pci_device_id serial_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP138E_A), 0, 0, pbn_moxa_8 },
{ PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP168EL_A), 0, 0, pbn_moxa_8 },
+ /*
+ * MOXA Mini PCIe
+ */
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP102N), 0, 0, pbn_moxa_2 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP104N), 0, 0, pbn_moxa_4 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP112N), 0, 0, pbn_moxa_2 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP114N), 0, 0, pbn_moxa_4 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP132N), 0, 0, pbn_moxa_2 },
+ { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP134N), 0, 0, pbn_moxa_4 },
+
/*
* ADDI-DATA GmbH communication cards <info@xxxxxxxxxxxxx>
*/
--
2.34.1
