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    Subject[PATCH 4/8] tty: serial: fsl_lpuart: Fix broken 8m/s1 support
    Date
    By default the driver always configure the mode as 8s1 even when 8m1
    mode is selected. Fix this by adding support to control the space/mark bit.

    Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
    ---
    drivers/tty/serial/fsl_lpuart.c | 9 +++++++--
    1 file changed, 7 insertions(+), 2 deletions(-)

    diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
    index 97c1fda..615f191 100644
    --- a/drivers/tty/serial/fsl_lpuart.c
    +++ b/drivers/tty/serial/fsl_lpuart.c
    @@ -1220,13 +1220,14 @@ lpuart_set_termios(struct uart_port *port, struct ktermios *termios,
    {
    struct lpuart_port *sport = container_of(port, struct lpuart_port, port);
    unsigned long flags;
    - unsigned char cr1, old_cr1, old_cr2, cr4, bdh, modem;
    + unsigned char cr1, old_cr1, old_cr2, cr3, cr4, bdh, modem;
    unsigned int baud;
    unsigned int old_csize = old ? old->c_cflag & CSIZE : CS8;
    unsigned int sbr, brfa;

    cr1 = old_cr1 = readb(sport->port.membase + UARTCR1);
    old_cr2 = readb(sport->port.membase + UARTCR2);
    + cr3 = readb(sport->port.membase + UARTCR3);
    cr4 = readb(sport->port.membase + UARTCR4);
    bdh = readb(sport->port.membase + UARTBDH);
    modem = readb(sport->port.membase + UARTMODEM);
    @@ -1274,7 +1275,10 @@ lpuart_set_termios(struct uart_port *port, struct ktermios *termios,
    if ((termios->c_cflag & PARENB)) {
    if (termios->c_cflag & CMSPAR) {
    cr1 &= ~UARTCR1_PE;
    - cr1 |= UARTCR1_M;
    + if (termios->c_cflag & PARODD)
    + cr3 |= UARTCR3_T8;
    + else
    + cr3 &= ~UARTCR3_T8;
    } else {
    cr1 |= UARTCR1_PE;
    if ((termios->c_cflag & CSIZE) == CS8)
    @@ -1342,6 +1346,7 @@ lpuart_set_termios(struct uart_port *port, struct ktermios *termios,
    writeb(cr4 | brfa, sport->port.membase + UARTCR4);
    writeb(bdh, sport->port.membase + UARTBDH);
    writeb(sbr & 0xFF, sport->port.membase + UARTBDL);
    + writeb(cr3, sport->port.membase + UARTCR3);
    writeb(cr1, sport->port.membase + UARTCR1);
    writeb(modem, sport->port.membase + UARTMODEM);

    --
    2.8.3
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