From: Mehul Raninga <quic_mraninga@quicinc.com>
To: agross@kernel.org, andersson@kernel.org,
konrad.dybcio@linaro.org, gregkh@linuxfoundation.org,
jirislaby@kernel.org, linux-arm-msm@vger.kernel.org,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: quic_vdadhani@quicinc.com, quic_vtanuku@quicinc.com,
quic_vnivarth@quicinc.com,
Mehul Raninga <quic_mraninga@quicinc.com>
Subject: [PATCH] serial: qcom_geni_serial: Setup serial port after Deep sleep
Date: Tue, 30 May 2023 16:45:57 +0530 [thread overview]
Message-ID: <20230530111557.10944-1-quic_mraninga@quicinc.com> (raw)
While exiting deep sleep, serial port loses its configuration
hence it prints garbage characters on console.
Set serial port configuration while resume from deep sleep.
Signed-off-by: Mehul Raninga <quic_mraninga@quicinc.com>
---
drivers/tty/serial/qcom_geni_serial.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index 8582479f0211..c04b8fec30ba 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -20,6 +20,7 @@
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
+#include <linux/suspend.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <dt-bindings/interconnect/qcom,icc.h>
@@ -1737,6 +1738,8 @@ static int qcom_geni_serial_sys_resume(struct device *dev)
if (uart_console(uport)) {
geni_icc_set_tag(&port->se, QCOM_ICC_TAG_ALWAYS);
geni_icc_set_bw(&port->se);
+ if (pm_suspend_via_firmware())
+ qcom_geni_serial_port_setup(uport);
}
return ret;
}
--
2.17.1
next reply other threads:[~2023-05-30 11:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-30 11:15 Mehul Raninga [this message]
2023-05-30 15:06 ` [PATCH] serial: qcom_geni_serial: Setup serial port after Deep sleep Bjorn Andersson
2023-05-31 13:06 ` Mehul Raninga (Temp) (QUIC)
2023-06-01 4:07 ` Bjorn Andersson
2023-06-02 6:39 ` Mehul Raninga (Temp) (QUIC)
2023-06-10 16:48 ` Bjorn Andersson
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