* [PATCH AUTOSEL 4.20 44/77] tty: serial: qcom_geni_serial: Allow mctrl when flow control is disabled
[not found] <20190215020855.176727-1-sashal@kernel.org>
@ 2019-02-15 2:08 ` Sasha Levin
2019-02-15 2:08 ` [PATCH AUTOSEL 4.20 45/77] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2019-02-15 2:08 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Matthias Kaehlcke, Greg Kroah-Hartman, Sasha Levin, linux-serial
From: Matthias Kaehlcke <mka@chromium.org>
[ Upstream commit e8a6ca808c5ed1e2b43ab25f1f2cbd43a7574f73 ]
The geni set/get_mctrl() functions currently do nothing unless
hardware flow control is enabled. Remove this arbitrary limitation.
Suggested-by: Johan Hovold <johan@kernel.org>
Fixes: 8a8a66a1a18a ("tty: serial: qcom_geni_serial: Add support for flow control")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/tty/serial/qcom_geni_serial.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index d3b5261ee80a..76e0ad7251e1 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -221,7 +221,7 @@ static unsigned int qcom_geni_serial_get_mctrl(struct uart_port *uport)
unsigned int mctrl = TIOCM_DSR | TIOCM_CAR;
u32 geni_ios;
- if (uart_console(uport) || !uart_cts_enabled(uport)) {
+ if (uart_console(uport)) {
mctrl |= TIOCM_CTS;
} else {
geni_ios = readl_relaxed(uport->membase + SE_GENI_IOS);
@@ -237,7 +237,7 @@ static void qcom_geni_serial_set_mctrl(struct uart_port *uport,
{
u32 uart_manual_rfr = 0;
- if (uart_console(uport) || !uart_cts_enabled(uport))
+ if (uart_console(uport))
return;
if (!(mctrl & TIOCM_RTS))
--
2.19.1
^ permalink raw reply related [flat|nested] 2+ messages in thread* [PATCH AUTOSEL 4.20 45/77] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling
[not found] <20190215020855.176727-1-sashal@kernel.org>
2019-02-15 2:08 ` [PATCH AUTOSEL 4.20 44/77] tty: serial: qcom_geni_serial: Allow mctrl when flow control is disabled Sasha Levin
@ 2019-02-15 2:08 ` Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2019-02-15 2:08 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Tomonori Sakita, Atsushi Nemoto, Greg Kroah-Hartman, Sasha Levin,
linux-serial
From: Tomonori Sakita <tomonori.sakita@sord.co.jp>
[ Upstream commit 815d835b7ba46685c316b000013367dacb2b461b ]
Using over-sampling ratio, lpuart can accept baud rate upto uartclk / 4.
Signed-off-by: Tomonori Sakita <tomonori.sakita@sord.co.jp>
Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/tty/serial/fsl_lpuart.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 00c220e4f43c..989b95af1b95 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1693,7 +1693,7 @@ lpuart32_set_termios(struct uart_port *port, struct ktermios *termios,
}
/* ask the core to calculate the divisor */
- baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 16);
+ baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 4);
spin_lock_irqsave(&sport->port.lock, flags);
--
2.19.1
^ permalink raw reply related [flat|nested] 2+ messages in thread