diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/omap-serial.c | 112 |
1 files changed, 53 insertions, 59 deletions
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 9f54cef56765..4888bd1ab322 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -707,63 +707,6 @@ static void serial_omap_shutdown(struct uart_port *port) free_irq(up->port.irq, up); } -static inline void -serial_omap_configure_xonxoff - (struct uart_omap_port *up, struct ktermios *termios) -{ - up->lcr = serial_in(up, UART_LCR); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - up->efr = serial_in(up, UART_EFR); - serial_out(up, UART_EFR, up->efr & ~UART_EFR_ECB); - - serial_out(up, UART_XON1, termios->c_cc[VSTART]); - serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]); - - /* clear SW control mode bits */ - up->efr &= OMAP_UART_SW_CLR; - - /* - * IXON Flag: - * Enable XON/XOFF flow control on output. - * Transmit XON1, XOFF1 - */ - if (termios->c_iflag & IXON) - up->efr |= OMAP_UART_SW_TX; - - /* - * IXOFF Flag: - * Enable XON/XOFF flow control on input. - * Receiver compares XON1, XOFF1. - */ - if (termios->c_iflag & IXOFF) - up->efr |= OMAP_UART_SW_RX; - - serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); - - up->mcr = serial_in(up, UART_MCR); - - /* - * IXANY Flag: - * Enable any character to restart output. - * Operation resumes after receiving any - * character after recognition of the XOFF character - */ - if (termios->c_iflag & IXANY) - up->mcr |= UART_MCR_XONANY; - else - up->mcr &= ~UART_MCR_XONANY; - - serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); - serial_out(up, UART_MCR, up->mcr & ~UART_MCR_TCRTLR); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - serial_out(up, UART_EFR, up->efr); - serial_out(up, UART_LCR, up->lcr); -} - static void serial_omap_uart_qos_work(struct work_struct *work) { struct uart_omap_port *up = container_of(work, struct uart_omap_port, @@ -984,8 +927,59 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, } /* Software Flow Control Configuration */ - if (up->port.flags & UPF_SOFT_FLOW) - serial_omap_configure_xonxoff(up, termios); + if (up->port.flags & UPF_SOFT_FLOW) { + up->lcr = serial_in(up, UART_LCR); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + up->efr = serial_in(up, UART_EFR); + serial_out(up, UART_EFR, up->efr & ~UART_EFR_ECB); + + serial_out(up, UART_XON1, termios->c_cc[VSTART]); + serial_out(up, UART_XOFF1, termios->c_cc[VSTOP]); + + /* clear SW control mode bits */ + up->efr &= OMAP_UART_SW_CLR; + + /* + * IXON Flag: + * Enable XON/XOFF flow control on output. + * Transmit XON1, XOFF1 + */ + if (termios->c_iflag & IXON) + up->efr |= OMAP_UART_SW_TX; + + /* + * IXOFF Flag: + * Enable XON/XOFF flow control on input. + * Receiver compares XON1, XOFF1. + */ + if (termios->c_iflag & IXOFF) + up->efr |= OMAP_UART_SW_RX; + + serial_out(up, UART_EFR, up->efr | UART_EFR_ECB); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); + + up->mcr = serial_in(up, UART_MCR); + + /* + * IXANY Flag: + * Enable any character to restart output. + * Operation resumes after receiving any + * character after recognition of the XOFF character + */ + if (termios->c_iflag & IXANY) + up->mcr |= UART_MCR_XONANY; + else + up->mcr &= ~UART_MCR_XONANY; + + serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); + serial_out(up, UART_MCR, up->mcr & ~UART_MCR_TCRTLR); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(up, UART_EFR, up->efr); + serial_out(up, UART_LCR, up->lcr); + } serial_omap_set_mctrl(&up->port, up->port.mctrl); |