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serial: 8250_pci: Add WCH384_8S 8 port serial device 

Add PCI id for WCH384_8S 8 port PCI-E serial card.
because this card has so many ports, you may have
to check these two options before use it:
  CONFIG_SERIAL_8250_RUNTIME_UARTS
  CONFIG_SERIAL_8250_NR_UARTS

Signed-off-by: Du Huanpeng <u74147@gmail.com>
Link: https://lore.kernel.org/r/1598060848-27807-1-git-send-email-u74147@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Du Huanpeng 2020-08-22 09:47:28 +08:00 committed by Greg Kroah-Hartman
parent c7ac46dac7
commit 04b6ff5f25
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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@ -1776,6 +1776,39 @@ pci_wch_ch38x_setup(struct serial_private *priv,
return pci_default_setup(priv, board, port, idx);
}
#define CH384_XINT_ENABLE_REG 0xEB
#define CH384_XINT_ENABLE_BIT 0x02
static int pci_wch_ch38x_init(struct pci_dev *dev)
{
int max_port;
unsigned long iobase;
switch (dev->device) {
case 0x3853: /* 8 ports */
max_port = 8;
break;
default:
return -EINVAL;
}
iobase = pci_resource_start(dev, 0);
outb(CH384_XINT_ENABLE_BIT, iobase + CH384_XINT_ENABLE_REG);
return max_port;
}
static void pci_wch_ch38x_exit(struct pci_dev *dev)
{
unsigned long iobase;
iobase = pci_resource_start(dev, 0);
outb(0x0, iobase + CH384_XINT_ENABLE_REG);
}
static int
pci_sunix_setup(struct serial_private *priv,
const struct pciserial_board *board,
@ -1867,6 +1900,7 @@ pci_moxa_setup(struct serial_private *priv,
#define PCIE_VENDOR_ID_WCH 0x1c00
#define PCIE_DEVICE_ID_WCH_CH382_2S1P 0x3250
#define PCIE_DEVICE_ID_WCH_CH384_4S 0x3470
#define PCIE_DEVICE_ID_WCH_CH384_8S 0x3853
#define PCIE_DEVICE_ID_WCH_CH382_2S 0x3253
#define PCI_VENDOR_ID_ACCESIO 0x494f
@ -2642,6 +2676,16 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.subdevice = PCI_ANY_ID,
.setup = pci_wch_ch38x_setup,
},
/* WCH CH384 8S card (16850 clone) */
{
.vendor = PCIE_VENDOR_ID_WCH,
.device = PCIE_DEVICE_ID_WCH_CH384_8S,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.init = pci_wch_ch38x_init,
.exit = pci_wch_ch38x_exit,
.setup = pci_wch_ch38x_setup,
},
/*
* ASIX devices with FIFO bug
*/
@ -2913,6 +2957,7 @@ enum pci_board_num_t {
pbn_fintek_F81512A,
pbn_wch382_2,
pbn_wch384_4,
pbn_wch384_8,
pbn_pericom_PI7C9X7951,
pbn_pericom_PI7C9X7952,
pbn_pericom_PI7C9X7954,
@ -3650,6 +3695,13 @@ static struct pciserial_board pci_boards[] = {
.uart_offset = 8,
.first_offset = 0xC0,
},
[pbn_wch384_8] = {
.flags = FL_BASE0,
.num_ports = 8,
.base_baud = 115200,
.uart_offset = 8,
.first_offset = 0x00,
},
/*
* Pericom PI7C9X795[1248] Uno/Dual/Quad/Octal UART
*/
@ -5566,6 +5618,10 @@ static const struct pci_device_id serial_pci_tbl[] = {
PCI_ANY_ID, PCI_ANY_ID,
0, 0, pbn_wch384_4 },
{ PCIE_VENDOR_ID_WCH, PCIE_DEVICE_ID_WCH_CH384_8S,
PCI_ANY_ID, PCI_ANY_ID,
0, 0, pbn_wch384_8 },
/* Fintek PCI serial cards */
{ PCI_DEVICE(0x1c29, 0x1104), .driver_data = pbn_fintek_4 },
{ PCI_DEVICE(0x1c29, 0x1108), .driver_data = pbn_fintek_8 },