diff options
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
-rw-r--r-- | drivers/tty/serial/sh-sci.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index db5b11879910..dfe9ac3b95af 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1750,6 +1750,10 @@ static irqreturn_t sci_br_interrupt(int irq, void *ptr) /* Handle BREAKs */ sci_handle_breaks(port); + + /* drop invalid character received before break was detected */ + serial_port_in(port, SCxRDR); + sci_clear_SCxSR(port, SCxSR_BREAK_CLEAR(port)); return IRQ_HANDLED; @@ -1829,7 +1833,8 @@ static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr) ret = sci_er_interrupt(irq, ptr); /* Break Interrupt */ - if ((ssr_status & SCxSR_BRK(port)) && err_enabled) + if (s->irqs[SCIx_ERI_IRQ] != s->irqs[SCIx_BRI_IRQ] && + (ssr_status & SCxSR_BRK(port)) && err_enabled) ret = sci_br_interrupt(irq, ptr); /* Overrun Interrupt */ @@ -2377,8 +2382,12 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios, int best_clk = -1; unsigned long flags; - if ((termios->c_cflag & CSIZE) == CS7) + if ((termios->c_cflag & CSIZE) == CS7) { smr_val |= SCSMR_CHR; + } else { + termios->c_cflag &= ~CSIZE; + termios->c_cflag |= CS8; + } if (termios->c_cflag & PARENB) smr_val |= SCSMR_PE; if (termios->c_cflag & PARODD) @@ -2899,6 +2908,13 @@ static int sci_init_single(struct platform_device *dev, for (i = 0; i < ARRAY_SIZE(sci_port->irqs); ++i) sci_port->irqs[i] = platform_get_irq(dev, i); + /* + * The fourth interrupt on SCI port is transmit end interrupt, so + * shuffle the interrupts. + */ + if (p->type == PORT_SCI) + swap(sci_port->irqs[SCIx_BRI_IRQ], sci_port->irqs[SCIx_TEI_IRQ]); + /* The SCI generates several interrupts. They can be muxed together or * connected to different interrupt lines. In the muxed case only one * interrupt resource is specified as there is only one interrupt ID. @@ -2964,7 +2980,7 @@ static int sci_init_single(struct platform_device *dev, port->flags = UPF_FIXED_PORT | UPF_BOOT_AUTOCONF | p->flags; port->fifosize = sci_port->params->fifosize; - if (port->type == PORT_SCI) { + if (port->type == PORT_SCI && !dev->dev.of_node) { if (sci_port->reg_size >= 0x20) port->regshift = 2; else |