[PATCH 3/7] tty: 8250: omap: introduce function to update mdr1
From: Sekhar Nori <hidden>
Date: 2015-07-06 09:47:53
Also in:
linux-omap, linux-serial
Subsystem:
8250/16?50 (and clone uarts) serial driver, the rest, tty layer and serial drivers · Maintainers:
Greg Kroah-Hartman, Linus Torvalds, Jiri Slaby
Possibly related (same subject, not in this thread)
- 2015-07-09 · Re: [PATCH 3/7] tty: 8250: omap: introduce function to update mdr1 · Sekhar Nori <hidden>
- 2015-07-09 · Re: [PATCH 3/7] tty: 8250: omap: introduce function to update mdr1 · Peter Hurley <hidden>
updating mdr1 register on OMAP needs to take care of errata i202. Introduce a function to update mdr1. This will be useful later on when mdr1 needs to be written to from other places. No functional change. Signed-off-by: Sekhar Nori <redacted> --- drivers/tty/serial/8250/8250_omap.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 20c5b9c4c288..d9c96b993a84 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c@@ -232,6 +232,15 @@ static void omap8250_update_scr(struct uart_8250_port *up, serial_out(up, UART_OMAP_SCR, priv->scr); } +static void omap8250_update_mdr1(struct uart_8250_port *up, + struct omap8250_priv *priv) +{ + if (priv->habit & UART_ERRATA_i202_MDR1_ACCESS) + omap_8250_mdr1_errataset(up, priv); + else + serial_out(up, UART_OMAP_MDR1, priv->mdr1); +} + static void omap8250_restore_regs(struct uart_8250_port *up) { struct omap8250_priv *priv = up->port.private_data;
@@ -282,11 +291,9 @@ static void omap8250_restore_regs(struct uart_8250_port *up) serial_out(up, UART_XOFF1, priv->xoff); serial_out(up, UART_LCR, up->lcr); - /* need mode A for FCR */ - if (priv->habit & UART_ERRATA_i202_MDR1_ACCESS) - omap_8250_mdr1_errataset(up, priv); - else - serial_out(up, UART_OMAP_MDR1, priv->mdr1); + + omap8250_update_mdr1(up, priv); + up->port.ops->set_mctrl(&up->port, up->port.mctrl); }
--
2.4.4.408.g16da57c
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html