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Date: Mon, 12 Dec 2016 08:21:01 +0100
From: Wolfgang Ocker <weo@...coware.de>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jslaby@...e.com>, Wolfgang Ocker <weo@...coware.de>
Subject: [PATCH] serial: mxs-auart: support CMSPAR termios cflag
If CMSPAR is set in the c_cflag of termios, "stick" parity is enabled.
Tested on an i.MX28 system
Signed-off-by: Wolfgang Ocker <weo@...coware.de>
---
v2: require PARENB to be also set in termios' c_cflag for CMSPAR
---
drivers/tty/serial/mxs-auart.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 770454e0dfa3..fd819ea26762 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -95,6 +95,7 @@
#define AUART_LINECTRL_BAUD_DIVFRAC_SHIFT 8
#define AUART_LINECTRL_BAUD_DIVFRAC_MASK 0x00003f00
#define AUART_LINECTRL_BAUD_DIVFRAC(v) (((v) & 0x3f) << 8)
+#define AUART_LINECTRL_SPS (1 << 7)
#define AUART_LINECTRL_WLEN_MASK 0x00000060
#define AUART_LINECTRL_WLEN(v) (((v) & 0x3) << 5)
#define AUART_LINECTRL_FEN (1 << 4)
@@ -1014,6 +1015,8 @@ static void mxs_auart_settermios(struct uart_port *u,
ctrl |= AUART_LINECTRL_PEN;
if ((cflag & PARODD) == 0)
ctrl |= AUART_LINECTRL_EPS;
+ if (cflag & CMSPAR)
+ ctrl |= AUART_LINECTRL_SPS;
}
u->read_status_mask = 0;
--
2.10.0
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