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can: m_can: select pinctrl state in each suspend/resume function

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[ Upstream commit c9b3bce18d ]

Make sure to apply the correct pin state in suspend/resume callbacks.
Putting pins in sleep state saves power.

Signed-off-by: Bich Hemon <bich.hemon@st.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bich HEMON 2018-03-12 08:52:37 +00:00 committed by Greg Kroah-Hartman
parent 27fe367cdd
commit 27eebf0800
1 changed files with 5 additions and 0 deletions
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5
drivers/net/can/m_can/m_can.c
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@ -25,6 +25,7 @@
#include <linux/platform_device.h>
#include <linux/iopoll.h>
#include <linux/can/dev.h>
#include <linux/pinctrl/consumer.h>
/* napi related */
#define M_CAN_NAPI_WEIGHT 64
@ -1682,6 +1683,8 @@ static __maybe_unused int m_can_suspend(struct device *dev)
m_can_clk_stop(priv);
}
pinctrl_pm_select_sleep_state(dev);
priv->can.state = CAN_STATE_SLEEPING;
return 0;
@ -1692,6 +1695,8 @@ static __maybe_unused int m_can_resume(struct device *dev)
struct net_device *ndev = dev_get_drvdata(dev);
struct m_can_priv *priv = netdev_priv(ndev);
pinctrl_pm_select_default_state(dev);
m_can_init_ram(priv);
priv->can.state = CAN_STATE_ERROR_ACTIVE;