diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_pci.c | 114 |
1 files changed, 50 insertions, 64 deletions
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 98e5a6d9cfef..08da4d3e2162 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1690,88 +1690,71 @@ static int pci_fintek_setup(struct serial_private *priv, struct uart_8250_port *port, int idx) { struct pci_dev *pdev = priv->dev; - unsigned long iobase; u8 config_base; + u16 iobase; + + config_base = 0x40 + 0x08 * idx; + + /* Get the io address from configuration space */ + pci_read_config_word(pdev, config_base + 4, &iobase); + + dev_dbg(&pdev->dev, "%s: idx=%d iobase=0x%x", __func__, idx, iobase); + + port->port.iotype = UPIO_PORT; + port->port.iobase = iobase; + + return 0; +} + +static int pci_fintek_init(struct pci_dev *dev) +{ + unsigned long iobase; + u32 max_port, i; u32 bar_data[3]; + u8 config_base; - /* - * Find each UARTs offset in PCI configuraion space - */ - switch (idx) { - case 0: - config_base = 0x40; + switch (dev->device) { + case 0x1104: /* 4 ports */ + case 0x1108: /* 8 ports */ + max_port = dev->device & 0xff; break; - case 1: - config_base = 0x48; - break; - case 2: - config_base = 0x50; - break; - case 3: - config_base = 0x58; - break; - case 4: - config_base = 0x60; - break; - case 5: - config_base = 0x68; - break; - case 6: - config_base = 0x70; - break; - case 7: - config_base = 0x78; - break; - case 8: - config_base = 0x80; - break; - case 9: - config_base = 0x88; - break; - case 10: - config_base = 0x90; - break; - case 11: - config_base = 0x98; + case 0x1112: /* 12 ports */ + max_port = 12; break; default: - /* Unknown number of ports, get out of here */ return -EINVAL; } /* Get the io address dispatch from the BIOS */ - pci_read_config_dword(pdev, 0x24, &bar_data[0]); - pci_read_config_dword(pdev, 0x20, &bar_data[1]); - pci_read_config_dword(pdev, 0x1c, &bar_data[2]); - - /* Calculate Real IO Port */ - iobase = (bar_data[idx/4] & 0xffffffe0) + (idx % 4) * 8; + pci_read_config_dword(dev, 0x24, &bar_data[0]); + pci_read_config_dword(dev, 0x20, &bar_data[1]); + pci_read_config_dword(dev, 0x1c, &bar_data[2]); - dev_dbg(&pdev->dev, "%s: idx=%d iobase=0x%lx config_base=0x%2x\n", - __func__, idx, iobase, config_base); + for (i = 0; i < max_port; ++i) { + /* UART0 configuration offset start from 0x40 */ + config_base = 0x40 + 0x08 * i; - /* Enable UART I/O port */ - pci_write_config_byte(pdev, config_base + 0x00, 0x01); + /* Calculate Real IO Port */ + iobase = (bar_data[i / 4] & 0xffffffe0) + (i % 4) * 8; - /* Select 128-byte FIFO and 8x FIFO threshold */ - pci_write_config_byte(pdev, config_base + 0x01, 0x33); + /* Enable UART I/O port */ + pci_write_config_byte(dev, config_base + 0x00, 0x01); - /* LSB UART */ - pci_write_config_byte(pdev, config_base + 0x04, (u8)(iobase & 0xff)); + /* Select 128-byte FIFO and 8x FIFO threshold */ + pci_write_config_byte(dev, config_base + 0x01, 0x33); - /* MSB UART */ - pci_write_config_byte(pdev, config_base + 0x05, (u8)((iobase & 0xff00) >> 8)); + /* LSB UART */ + pci_write_config_byte(dev, config_base + 0x04, + (u8)(iobase & 0xff)); - /* irq number, this usually fails, but the spec says to do it anyway. */ - pci_write_config_byte(pdev, config_base + 0x06, pdev->irq); + /* MSB UART */ + pci_write_config_byte(dev, config_base + 0x05, + (u8)((iobase & 0xff00) >> 8)); - port->port.iotype = UPIO_PORT; - port->port.iobase = iobase; - port->port.mapbase = 0; - port->port.membase = NULL; - port->port.regshift = 0; + pci_write_config_byte(dev, config_base + 0x06, dev->irq); + } - return 0; + return max_port; } static int skip_tx_en_setup(struct serial_private *priv, @@ -2814,6 +2797,7 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, .setup = pci_fintek_setup, + .init = pci_fintek_init, }, { .vendor = 0x1c29, @@ -2821,6 +2805,7 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, .setup = pci_fintek_setup, + .init = pci_fintek_init, }, { .vendor = 0x1c29, @@ -2828,6 +2813,7 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, .setup = pci_fintek_setup, + .init = pci_fintek_init, }, /* |