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Commit b6514988 authored by René Bürgel's avatar René Bürgel Committed by Grant Likely
Browse files

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: default avatarRené Bürgel <r.buergel@unicontrol.de>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent e51f47a5

drivers/serial/mpc52xx_uart.c

+8 −2
Original line number Diff line number Diff line
@@ -752,10 +752,15 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port) 
			if (status & MPC52xx_PSC_SR_RB) {

				flag = TTY_BREAK;

				uart_handle_break(port);

			} else if (status & MPC52xx_PSC_SR_PE)

				port->icount.brk++;

			} else if (status & MPC52xx_PSC_SR_PE) {

				flag = TTY_PARITY;

			else if (status & MPC52xx_PSC_SR_FE)

				port->icount.parity++;

			}

			else if (status & MPC52xx_PSC_SR_FE) {

				flag = TTY_FRAME;

				port->icount.frame++;

			}



			/* Clear error condition */

			out_8(&PSC(port)->command, MPC52xx_PSC_RST_ERR_STAT);
@@ -769,6 +774,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port) 
			 * affect the current character

			 */

			tty_insert_flip_char(tty, 0, TTY_OVERRUN);

			port->icount.overrun++;

		}

	}