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| author |   Michal Simek <michal.simek@xilinx.com> | 2018-09-03 15:05:37 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-18 16:07:23 +0200 |
| commit | 6ac1b91f346f7c489ef2a582b0c8c085fc51aabb (patch) | |
| tree | fb352ee1958dff5aa4c2a09f5d29ceb0f7a0cf70 /drivers/tty/serial/xilinx_uartps.c | |
| parent | serial: uartps: Move Port ID to device data structure (diff) | |
| download | linux-dev-6ac1b91f346f7c489ef2a582b0c8c085fc51aabb.tar.xz linux-dev-6ac1b91f346f7c489ef2a582b0c8c085fc51aabb.zip | |
serial: uartps: Enable automatic flow control
Enable automatic flow control which should ensure that there is no
mainteinance in connection for zcu100 BT case.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Nava kishore Manne <navam@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/tty/serial/xilinx_uartps.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index 0443edc1ad78..71c032744dae 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -1006,13 +1006,12 @@ static void cdns_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) val = readl(port->membase + CDNS_UART_MODEMCR); mode_reg = readl(port->membase + CDNS_UART_MR); - val &= ~(CDNS_UART_MODEMCR_RTS | CDNS_UART_MODEMCR_DTR); + val &= ~(CDNS_UART_MODEMCR_RTS | CDNS_UART_MODEMCR_DTR | + CDNS_UART_MODEMCR_FCM); mode_reg &= ~CDNS_UART_MR_CHMODE_MASK; - if (mctrl & TIOCM_RTS) - val |= CDNS_UART_MODEMCR_RTS; - if (mctrl & TIOCM_DTR) - val |= CDNS_UART_MODEMCR_DTR; + if (mctrl & TIOCM_RTS || mctrl & TIOCM_DTR) + val |= CDNS_UART_MODEMCR_FCM; if (mctrl & TIOCM_LOOP) mode_reg |= CDNS_UART_MR_CHMODE_L_LOOP; else |