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serial: imx: reorder functions to simplify next patch

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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2016-03-24 14:24:24 +01:00 committed by Greg Kroah-Hartman
parent 9ec8efe94b
commit 66f9588492
1 changed files with 49 additions and 49 deletions
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98
drivers/tty/serial/imx.c
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@ -732,6 +732,55 @@ static void imx_dma_rxint(struct imx_port *sport)
spin_unlock_irqrestore(&sport->port.lock, flags);
}
/*
* We have a modem side uart, so the meanings of RTS and CTS are inverted.
*/
static unsigned int imx_get_hwmctrl(struct imx_port *sport)
{
unsigned int tmp = TIOCM_DSR;
unsigned usr1 = readl(sport->port.membase + USR1);
if (usr1 & USR1_RTSS)
tmp |= TIOCM_CTS;
/* in DCE mode DCDIN is always 0 */
if (!(usr1 & USR2_DCDIN))
tmp |= TIOCM_CAR;
if (sport->dte_mode)
if (!(readl(sport->port.membase + USR2) & USR2_RIIN))
tmp |= TIOCM_RI;
return tmp;
}
/*
* Handle any change of modem status signal since we were last called.
*/
static void imx_mctrl_check(struct imx_port *sport)
{
unsigned int status, changed;
status = imx_get_hwmctrl(sport);
changed = status ^ sport->old_status;
if (changed == 0)
return;
sport->old_status = status;
if (changed & TIOCM_RI && status & TIOCM_RI)
sport->port.icount.rng++;
if (changed & TIOCM_DSR)
sport->port.icount.dsr++;
if (changed & TIOCM_CAR)
uart_handle_dcd_change(&sport->port, status & TIOCM_CAR);
if (changed & TIOCM_CTS)
uart_handle_cts_change(&sport->port, status & TIOCM_CTS);
wake_up_interruptible(&sport->port.state->port.delta_msr_wait);
}
static irqreturn_t imx_int(int irq, void *dev_id)
{
struct imx_port *sport = dev_id;
@ -794,28 +843,6 @@ static unsigned int imx_tx_empty(struct uart_port *port)
return ret;
}
/*
* We have a modem side uart, so the meanings of RTS and CTS are inverted.
*/
static unsigned int imx_get_hwmctrl(struct imx_port *sport)
{
unsigned int tmp = TIOCM_DSR;
unsigned usr1 = readl(sport->port.membase + USR1);
if (usr1 & USR1_RTSS)
tmp |= TIOCM_CTS;
/* in DCE mode DCDIN is always 0 */
if (!(usr1 & USR2_DCDIN))
tmp |= TIOCM_CAR;
if (sport->dte_mode)
if (!(readl(sport->port.membase + USR2) & USR2_RIIN))
tmp |= TIOCM_RI;
return tmp;
}
static unsigned int imx_get_mctrl(struct uart_port *port)
{
struct imx_port *sport = (struct imx_port *)port;
@ -872,33 +899,6 @@ static void imx_break_ctl(struct uart_port *port, int break_state)
spin_unlock_irqrestore(&sport->port.lock, flags);
}
/*
* Handle any change of modem status signal since we were last called.
*/
static void imx_mctrl_check(struct imx_port *sport)
{
unsigned int status, changed;
status = imx_get_hwmctrl(sport);
changed = status ^ sport->old_status;
if (changed == 0)
return;
sport->old_status = status;
if (changed & TIOCM_RI && status & TIOCM_RI)
sport->port.icount.rng++;
if (changed & TIOCM_DSR)
sport->port.icount.dsr++;
if (changed & TIOCM_CAR)
uart_handle_dcd_change(&sport->port, status & TIOCM_CAR);
if (changed & TIOCM_CTS)
uart_handle_cts_change(&sport->port, status & TIOCM_CTS);
wake_up_interruptible(&sport->port.state->port.delta_msr_wait);
}
/*
* This is our per-port timeout handler, for checking the
* modem status signals.