From mboxrd@z Thu Jan  1 00:00:00 1970
From: Erwan Le Ray <erwan.leray@st.com>
Subject: [PATCH v3 03/10] serial: stm32: select pinctrl state in each
 suspend/resume function
Date: Thu, 13 Jun 2019 15:49:53 +0200
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To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jiri Slaby <jslaby@suse.com>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre
 Torgue <alexandre.torgue@st.com>, Rob Herring <robh+dt@kernel.org>, Mark
 Rutland <mark.rutland@arm.com>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Erwan Le Ray <erwan.leray@st.com>, linux-serial@vger.kernel.org, Bich Hemon <bich.hemon@st.com>, Fabrice Gasnier <fabrice.gasnier@st.com>, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org
List-Id: devicetree@vger.kernel.org

Select either pinctrl sleep state in suspend function or default state in
resume function.

Signed-off-by: Bich Hemon <bich.hemon@st.com>
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 9c2b04e..a8f20ba 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -24,6 +24,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_platform.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/pm_wakeirq.h>
@@ -1298,6 +1299,8 @@ static int stm32_serial_suspend(struct device *dev)
 	else
 		stm32_serial_enable_wakeup(port, false);
 
+	pinctrl_pm_select_sleep_state(dev);
+
 	return 0;
 }
 
@@ -1305,6 +1308,8 @@ static int stm32_serial_resume(struct device *dev)
 {
 	struct uart_port *port = dev_get_drvdata(dev);
 
+	pinctrl_pm_select_default_state(dev);
+
 	if (device_may_wakeup(dev))
 		stm32_serial_enable_wakeup(port, false);
 
-- 
1.9.1