[PATCH 6/6] can: m_can: select pinctrl state in each suspend/resume function
flat view
STALE3139d
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: 2018-03-12 10:04:28
Subsystem:
can network drivers, mcan device driver, the rest · Maintainers:
Marc Kleine-Budde, Vincent Mailhol, Markus Schneider-Pargmann, Linus Torvalds
From: Bich HEMON <redacted> Make sure to apply the correct pin state in suspend/resume callbacks. Putting pins in sleep state saves power. Signed-off-by: Bich Hemon <redacted> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> --- drivers/net/can/m_can/m_can.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 74170b0d23cf..b397a33f3d32 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c@@ -26,6 +26,7 @@ #include <linux/pm_runtime.h> #include <linux/iopoll.h> #include <linux/can/dev.h> +#include <linux/pinctrl/consumer.h> /* napi related */ #define M_CAN_NAPI_WEIGHT 64
@@ -1700,6 +1701,8 @@ 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;
@@ -1710,6 +1713,8 @@ 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;
--
2.16.1