This patch allows testing of patch 2/2 in the series by forcing bytes read from the i.MX serial port to be printable.
Without this, it's very hard to tell that a series of in-bound '\xff' characters are being produced, because they'll be silently ignored.
Note that this is only submitted for testing.
Signed-off-by: Eric Nelson eric.nelson@boundarydevices.com --- drivers/serial/serial_mxc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c index 56bee55..ef308dc 100644 --- a/drivers/serial/serial_mxc.c +++ b/drivers/serial/serial_mxc.c @@ -145,9 +145,13 @@ static void mxc_serial_setbrg(void)
static int mxc_serial_getc(void) { + unsigned char rx; while (__REG(UART_PHYS + UTS) & UTS_RXEMPTY) WATCHDOG_RESET(); - return (__REG(UART_PHYS + URXD) & URXD_RX_DATA); /* mask out status from upper word */ + rx = (__REG(UART_PHYS + URXD) & URXD_RX_DATA); /* mask out status from upper word */ + if (0x80 <= rx) + rx = '?'; + return rx; }
static void mxc_serial_putc(const char c)