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tty: serial: 8250: Add support for MOXA Mini PCIe boards

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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@moxa.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20231018091739.10125-5-crescentcy.hsieh@moxa.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Crescent CY Hsieh 2023-10-18 17:17:37 +08:00 committed by Greg Kroah-Hartman
parent 5c41483507
commit 37058fd5d2
1 changed files with 56 additions and 0 deletions
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56
drivers/tty/serial/8250/8250_pci.c
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@ -83,14 +83,20 @@
#define PCI_DEVICE_ID_MOXA_CP102E 0x1024
#define PCI_DEVICE_ID_MOXA_CP102EL 0x1025
#define PCI_DEVICE_ID_MOXA_CP102N 0x1027
#define PCI_DEVICE_ID_MOXA_CP104EL_A 0x1045
#define PCI_DEVICE_ID_MOXA_CP104N 0x1046
#define PCI_DEVICE_ID_MOXA_CP112N 0x1121
#define PCI_DEVICE_ID_MOXA_CP114EL 0x1144
#define PCI_DEVICE_ID_MOXA_CP114N 0x1145
#define PCI_DEVICE_ID_MOXA_CP116E_A_A 0x1160
#define PCI_DEVICE_ID_MOXA_CP116E_A_B 0x1161
#define PCI_DEVICE_ID_MOXA_CP118EL_A 0x1182
#define PCI_DEVICE_ID_MOXA_CP118E_A_I 0x1183
#define PCI_DEVICE_ID_MOXA_CP132EL 0x1322
#define PCI_DEVICE_ID_MOXA_CP132N 0x1323
#define PCI_DEVICE_ID_MOXA_CP134EL_A 0x1342
#define PCI_DEVICE_ID_MOXA_CP134N 0x1343
#define PCI_DEVICE_ID_MOXA_CP138E_A 0x1381
#define PCI_DEVICE_ID_MOXA_CP168EL_A 0x1683
@ -1959,6 +1965,49 @@ 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_PIN2 BIT(2)
static bool pci_moxa_is_mini_pcie(unsigned short device)
{
if (device == PCI_DEVICE_ID_MOXA_CP102N ||
device == PCI_DEVICE_ID_MOXA_CP104N ||
device == PCI_DEVICE_ID_MOXA_CP112N ||
device == PCI_DEVICE_ID_MOXA_CP114N ||
device == PCI_DEVICE_ID_MOXA_CP132N ||
device == PCI_DEVICE_ID_MOXA_CP134N)
return true;
return false;
}
static int pci_moxa_init(struct pci_dev *dev)
{
unsigned short device = dev->device;
resource_size_t iobar_addr = pci_resource_start(dev, 2);
unsigned int num_ports = (device & 0x00F0) >> 4;
u8 val;
/*
* Enable hardware buffer to prevent break signal output when system boots up.
* This hardware buffer is only supported on Mini PCIe series.
*/
if (pci_moxa_is_mini_pcie(device)) {
/* Set GPIO direction */
val = inb(iobar_addr + MOXA_PUART_GPIO_EN);
val |= MOXA_GPIO_PIN2;
outb(val, iobar_addr + MOXA_PUART_GPIO_EN);
/* Enable low GPIO */
val = inb(iobar_addr + MOXA_PUART_GPIO_OUT);
val &= ~MOXA_GPIO_PIN2;
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,
@ -2635,6 +2684,7 @@ 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,
},
{
@ -5351,14 +5401,20 @@ static const struct pci_device_id serial_pci_tbl[] = {
*/
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102E), pbn_moxa_2 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102EL), pbn_moxa_2 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP102N), pbn_moxa_2 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104EL_A), pbn_moxa_4 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP104N), pbn_moxa_4 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP112N), pbn_moxa_2 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114EL), pbn_moxa_4 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP114N), pbn_moxa_4 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP116E_A_A), pbn_moxa_8 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP116E_A_B), pbn_moxa_8 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118EL_A), pbn_moxa_8 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP118E_A_I), pbn_moxa_8 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132EL), pbn_moxa_2 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP132N), pbn_moxa_2 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134EL_A), pbn_moxa_4 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP134N), pbn_moxa_4 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP138E_A), pbn_moxa_8 },
{ PCI_VDEVICE(MOXA, PCI_DEVICE_ID_MOXA_CP168EL_A), pbn_moxa_8 },