diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_pnp.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_pnp.c | 59 |
1 files changed, 32 insertions, 27 deletions
diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c index a2f236510ff1..f8ee25001dd0 100644 --- a/drivers/tty/serial/8250/8250_pnp.c +++ b/drivers/tty/serial/8250/8250_pnp.c @@ -1,5 +1,5 @@ /* - * Probe module for 8250/16550-type ISAPNP serial ports. + * Probe for 8250/16550-type ISAPNP serial ports. * * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. * @@ -25,7 +25,7 @@ #include "8250.h" #define UNKNOWN_DEV 0x3000 - +#define CIR_PORT 0x0800 static const struct pnp_device_id pnp_dev_table[] = { /* Archtek America Corp. */ @@ -362,6 +362,9 @@ static const struct pnp_device_id pnp_dev_table[] = { { "PNPCXXX", UNKNOWN_DEV }, /* More unknown PnP modems */ { "PNPDXXX", UNKNOWN_DEV }, + /* Winbond CIR port, should not be probed. We should keep track + of it to prevent the legacy serial driver from probing it */ + { "WEC1022", CIR_PORT }, { "", 0 } }; @@ -409,7 +412,7 @@ static int __devinit check_resources(struct pnp_dev *dev) * PnP modems, alternatively we must hardcode all modems in pnp_devices[] * table. */ -static int __devinit serial_pnp_guess_board(struct pnp_dev *dev, int *flags) +static int __devinit serial_pnp_guess_board(struct pnp_dev *dev) { if (!(check_name(pnp_dev_name(dev)) || (dev->card && check_name(dev->card->name)))) @@ -424,42 +427,49 @@ static int __devinit serial_pnp_guess_board(struct pnp_dev *dev, int *flags) static int __devinit serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) { - struct uart_port port; + struct uart_8250_port uart; int ret, line, flags = dev_id->driver_data; if (flags & UNKNOWN_DEV) { - ret = serial_pnp_guess_board(dev, &flags); + ret = serial_pnp_guess_board(dev); if (ret < 0) return ret; } - memset(&port, 0, sizeof(struct uart_port)); + memset(&uart, 0, sizeof(uart)); if (pnp_irq_valid(dev, 0)) - port.irq = pnp_irq(dev, 0); - if (pnp_port_valid(dev, 0)) { - port.iobase = pnp_port_start(dev, 0); - port.iotype = UPIO_PORT; + uart.port.irq = pnp_irq(dev, 0); + if ((flags & CIR_PORT) && pnp_port_valid(dev, 2)) { + uart.port.iobase = pnp_port_start(dev, 2); + uart.port.iotype = UPIO_PORT; + } else if (pnp_port_valid(dev, 0)) { + uart.port.iobase = pnp_port_start(dev, 0); + uart.port.iotype = UPIO_PORT; } else if (pnp_mem_valid(dev, 0)) { - port.mapbase = pnp_mem_start(dev, 0); - port.iotype = UPIO_MEM; - port.flags = UPF_IOREMAP; + uart.port.mapbase = pnp_mem_start(dev, 0); + uart.port.iotype = UPIO_MEM; + uart.port.flags = UPF_IOREMAP; } else return -ENODEV; #ifdef SERIAL_DEBUG_PNP printk(KERN_DEBUG "Setup PNP port: port %x, mem 0x%lx, irq %d, type %d\n", - port.iobase, port.mapbase, port.irq, port.iotype); + uart.port.iobase, uart.port.mapbase, uart.port.irq, uart.port.iotype); #endif + if (flags & CIR_PORT) { + uart.port.flags |= UPF_FIXED_PORT | UPF_FIXED_TYPE; + uart.port.type = PORT_8250_CIR; + } - port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF; + uart.port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF; if (pnp_irq_flags(dev, 0) & IORESOURCE_IRQ_SHAREABLE) - port.flags |= UPF_SHARE_IRQ; - port.uartclk = 1843200; - port.dev = &dev->dev; + uart.port.flags |= UPF_SHARE_IRQ; + uart.port.uartclk = 1843200; + uart.port.dev = &dev->dev; - line = serial8250_register_port(&port); - if (line < 0) + line = serial8250_register_8250_port(&uart); + if (line < 0 || (flags & CIR_PORT)) return -ENODEV; pnp_set_drvdata(dev, (void *)((long)line + 1)); @@ -507,18 +517,13 @@ static struct pnp_driver serial_pnp_driver = { .id_table = pnp_dev_table, }; -static int __init serial8250_pnp_init(void) +int serial8250_pnp_init(void) { return pnp_register_driver(&serial_pnp_driver); } -static void __exit serial8250_pnp_exit(void) +void serial8250_pnp_exit(void) { pnp_unregister_driver(&serial_pnp_driver); } -module_init(serial8250_pnp_init); -module_exit(serial8250_pnp_exit); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Generic 8250/16x50 PnP serial driver"); |