diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2014-12-30 11:17:07 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2014-12-30 15:27:20 +0100 |
| commit | 7ebdfaa52d15b947503f76474477f92854796d96 (patch) | |
| tree | 27cd7acfcd264e8d643db86185f9e3a33a5cf367 /drivers/net/can/c_can/c_can.c | |
| parent | d6ad36913083d683aad4e02e53580c995f1a6ede (diff) | |
| parent | d4b0833a65e8b9fc58d992ba0cc89cad1580db31 (diff) | |
Merge tag 'mvebu-fixes-3.19' of git://git.infradead.org/linux-mvebu into fixes
Pull "Fixes for 3.19" from Andrew Lunn:
Jason is taking a back seat this cycle and i'm doing all the patch
wrangling for mvebu.
* tag 'mvebu-fixes-3.19' of git://git.infradead.org/linux-mvebu:
ARM: mvebu: Fix pinctrl configuration for Armada 370 DB
Also update to Linux 3.19-rc1, which this was based on.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/net/can/c_can/c_can.c')
| -rw-r--r-- | drivers/net/can/c_can/c_can.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 8e78bb48f5a4..f94a9fa60488 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -35,6 +35,7 @@ #include <linux/list.h> #include <linux/io.h> #include <linux/pm_runtime.h> +#include <linux/pinctrl/consumer.h> #include <linux/can.h> #include <linux/can/dev.h> @@ -603,6 +604,8 @@ static int c_can_start(struct net_device *dev) priv->can.state = CAN_STATE_ERROR_ACTIVE; + /* activate pins */ + pinctrl_pm_select_default_state(dev->dev.parent); return 0; } @@ -611,6 +614,9 @@ static void c_can_stop(struct net_device *dev) struct c_can_priv *priv = netdev_priv(dev); c_can_irq_control(priv, false); + + /* deactivate pins */ + pinctrl_pm_select_sleep_state(dev->dev.parent); priv->can.state = CAN_STATE_STOPPED; } @@ -1244,6 +1250,13 @@ int register_c_can_dev(struct net_device *dev) struct c_can_priv *priv = netdev_priv(dev); int err; + /* Deactivate pins to prevent DRA7 DCAN IP from being + * stuck in transition when module is disabled. + * Pins are activated in c_can_start() and deactivated + * in c_can_stop() + */ + pinctrl_pm_select_sleep_state(dev->dev.parent); + c_can_pm_runtime_enable(priv); dev->flags |= IFF_ECHO; /* we support local echo */ |