diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250.c | 84 |
1 files changed, 33 insertions, 51 deletions
diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c index 8123f784bcda..d4e0b07cb130 100644 --- a/drivers/tty/serial/8250/8250.c +++ b/drivers/tty/serial/8250/8250.c @@ -2202,6 +2202,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, unsigned char cval, fcr = 0; unsigned long flags; unsigned int baud, quot; + int fifo_bug = 0; switch (termios->c_cflag & CSIZE) { case CS5: @@ -2221,8 +2222,11 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, if (termios->c_cflag & CSTOPB) cval |= UART_LCR_STOP; - if (termios->c_cflag & PARENB) + if (termios->c_cflag & PARENB) { cval |= UART_LCR_PARITY; + if (up->bugs & UART_BUG_PARITY) + fifo_bug = 1; + } if (!(termios->c_cflag & PARODD)) cval |= UART_LCR_EPAR; #ifdef CMSPAR @@ -2246,7 +2250,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) { fcr = uart_config[port->type].fcr; - if (baud < 2400) { + if (baud < 2400 || fifo_bug) { fcr &= ~UART_FCR_TRIGGER_MASK; fcr |= UART_FCR_TRIGGER_1; } @@ -2336,7 +2340,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, serial_port_out(port, UART_EFR, efr); } -#ifdef CONFIG_ARCH_OMAP +#ifdef CONFIG_ARCH_OMAP1 /* Workaround to enable 115200 baud on OMAP1510 internal ports */ if (cpu_is_omap1510() && is_omap_port(up)) { if (baud == 115200) { @@ -2426,7 +2430,7 @@ static unsigned int serial8250_port_size(struct uart_8250_port *pt) { if (pt->port.iotype == UPIO_AU) return 0x1000; -#ifdef CONFIG_ARCH_OMAP +#ifdef CONFIG_ARCH_OMAP1 if (is_omap_port(pt)) return 0x16 << pt->port.regshift; #endif @@ -2979,36 +2983,36 @@ void serial8250_resume_port(int line) static int __devinit serial8250_probe(struct platform_device *dev) { struct plat_serial8250_port *p = dev->dev.platform_data; - struct uart_port port; + struct uart_8250_port uart; int ret, i, irqflag = 0; - memset(&port, 0, sizeof(struct uart_port)); + memset(&uart, 0, sizeof(uart)); if (share_irqs) irqflag = IRQF_SHARED; for (i = 0; p && p->flags != 0; p++, i++) { - port.iobase = p->iobase; - port.membase = p->membase; - port.irq = p->irq; - port.irqflags = p->irqflags; - port.uartclk = p->uartclk; - port.regshift = p->regshift; - port.iotype = p->iotype; - port.flags = p->flags; - port.mapbase = p->mapbase; - port.hub6 = p->hub6; - port.private_data = p->private_data; - port.type = p->type; - port.serial_in = p->serial_in; - port.serial_out = p->serial_out; - port.handle_irq = p->handle_irq; - port.handle_break = p->handle_break; - port.set_termios = p->set_termios; - port.pm = p->pm; - port.dev = &dev->dev; - port.irqflags |= irqflag; - ret = serial8250_register_port(&port); + uart.port.iobase = p->iobase; + uart.port.membase = p->membase; + uart.port.irq = p->irq; + uart.port.irqflags = p->irqflags; + uart.port.uartclk = p->uartclk; + uart.port.regshift = p->regshift; + uart.port.iotype = p->iotype; + uart.port.flags = p->flags; + uart.port.mapbase = p->mapbase; + uart.port.hub6 = p->hub6; + uart.port.private_data = p->private_data; + uart.port.type = p->type; + uart.port.serial_in = p->serial_in; + uart.port.serial_out = p->serial_out; + uart.port.handle_irq = p->handle_irq; + uart.port.handle_break = p->handle_break; + uart.port.set_termios = p->set_termios; + uart.port.pm = p->pm; + uart.port.dev = &dev->dev; + uart.port.irqflags |= irqflag; + ret = serial8250_register_8250_port(&uart); if (ret < 0) { dev_err(&dev->dev, "unable to register port at index %d " "(IO%lx MEM%llx IRQ%d): %d\n", i, @@ -3081,7 +3085,7 @@ static struct platform_driver serial8250_isa_driver = { static struct platform_device *serial8250_isa_devs; /* - * serial8250_register_port and serial8250_unregister_port allows for + * serial8250_register_8250_port and serial8250_unregister_port allows for * 16x50 serial ports to be configured at run-time, to support PCMCIA * modems and PCI multiport cards. */ @@ -3155,6 +3159,7 @@ int serial8250_register_8250_port(struct uart_8250_port *up) uart->port.regshift = up->port.regshift; uart->port.iotype = up->port.iotype; uart->port.flags = up->port.flags | UPF_BOOT_AUTOCONF; + uart->bugs = up->bugs; uart->port.mapbase = up->port.mapbase; uart->port.private_data = up->port.private_data; if (up->port.dev) @@ -3198,29 +3203,6 @@ int serial8250_register_8250_port(struct uart_8250_port *up) EXPORT_SYMBOL(serial8250_register_8250_port); /** - * serial8250_register_port - register a serial port - * @port: serial port template - * - * Configure the serial port specified by the request. If the - * port exists and is in use, it is hung up and unregistered - * first. - * - * The port is then probed and if necessary the IRQ is autodetected - * If this fails an error is returned. - * - * On success the port is ready to use and the line number is returned. - */ -int serial8250_register_port(struct uart_port *port) -{ - struct uart_8250_port up; - - memset(&up, 0, sizeof(up)); - memcpy(&up.port, port, sizeof(*port)); - return serial8250_register_8250_port(&up); -} -EXPORT_SYMBOL(serial8250_register_port); - -/** * serial8250_unregister_port - remove a 16x50 serial port at runtime * @line: serial line number * |