提交 b6514988 编写于 作者: R René Bürgel 提交者: Grant Likely

powerpc/mpc5200: Make PSC UART driver update serial errors counters

This patch adds the capability to the mpc52xx-uart to report framing
errors, parity errors, breaks and overruns to userspace. These values
may be requested in userspace by using the ioctl TIOCGICOUNT.
Signed-off-by: NRené Bürgel <r.buergel@unicontrol.de>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
上级 e51f47a5
...@@ -752,10 +752,15 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port) ...@@ -752,10 +752,15 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
if (status & MPC52xx_PSC_SR_RB) { if (status & MPC52xx_PSC_SR_RB) {
flag = TTY_BREAK; flag = TTY_BREAK;
uart_handle_break(port); uart_handle_break(port);
} else if (status & MPC52xx_PSC_SR_PE) port->icount.brk++;
} else if (status & MPC52xx_PSC_SR_PE) {
flag = TTY_PARITY; flag = TTY_PARITY;
else if (status & MPC52xx_PSC_SR_FE) port->icount.parity++;
}
else if (status & MPC52xx_PSC_SR_FE) {
flag = TTY_FRAME; flag = TTY_FRAME;
port->icount.frame++;
}
/* Clear error condition */ /* Clear error condition */
out_8(&PSC(port)->command, MPC52xx_PSC_RST_ERR_STAT); out_8(&PSC(port)->command, MPC52xx_PSC_RST_ERR_STAT);
...@@ -769,6 +774,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port) ...@@ -769,6 +774,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
* affect the current character * affect the current character
*/ */
tty_insert_flip_char(tty, 0, TTY_OVERRUN); tty_insert_flip_char(tty, 0, TTY_OVERRUN);
port->icount.overrun++;
} }
} }
......
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