From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
Expose CTS pin to serial core for the SCIFA/SCIFB case.
Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx>
---
drivers/tty/serial/sh-sci.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
--- 0023/drivers/tty/serial/sh-sci.c
+++ work/drivers/tty/serial/sh-sci.c 2014-12-17 18:46:44.000000000 +0900
@@ -564,6 +564,11 @@ static void sci_init_pins_default(struct
serial_port_out(port, SCSPTR, status); /* Set RTS = 1 */
}
+static bool sci_cts_asserted_scifab(struct uart_port *port)
+{
+ return !(serial_port_in(port, SCPDR) & BIT(3));
+}
+
static void sci_init_pins_scifab(struct uart_port *port, bool hwflow_enabled)
{
unsigned short control, data;
@@ -1304,8 +1309,16 @@ static unsigned int sci_get_mctrl(struct
* else is wired up. Keep it simple and simply assert DSR/CAR.
*/
- if (s->cfg->capabilities & SCIx_HAVE_RTSCTS)
- cts_asserted = sci_cts_asserted_default(port);
+ if (s->cfg->capabilities & SCIx_HAVE_RTSCTS) {
+ switch (s->cfg->type) {
+ case PORT_SCIFA:
+ case PORT_SCIFB:
+ cts_asserted = sci_cts_asserted_scifab(port);
+ break;
+ default:
+ cts_asserted = sci_cts_asserted_default(port);
+ }
+ }
return TIOCM_DSR | TIOCM_CAR | (cts_asserted ? TIOCM_CTS : 0);
}
--
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