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serial: 8250_dw: Set port capabilities based on CPR register

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The Designware UART has an optional support for 16750
compatible Auto Flow Control. This will enable it based on
the AFCE bit in Component Parameter Register.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heikki Krogerus 2013-04-10 16:58:31 +03:00 committed by Greg Kroah-Hartman
parent 94b2b47cf6
commit 2920adb6df
1 changed files with 4 additions and 0 deletions
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4
drivers/tty/serial/8250/8250_dw.c
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@ -221,7 +221,11 @@ static void dw8250_setup_port(struct uart_8250_port *up)
p->flags |= UPF_FIXED_TYPE;
p->fifosize = DW_UART_CPR_FIFO_SIZE(reg);
up->tx_loadsz = p->fifosize;
up->capabilities = UART_CAP_FIFO;
}
if (reg & DW_UART_CPR_AFCE_MODE)
up->capabilities |= UART_CAP_AFE;
}
static int dw8250_probe(struct platform_device *pdev)