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| author | Eric Bénard <eric@eukrea.com> | 2012-05-08 19:12:17 +0400 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2012-05-24 00:55:48 +0400 |
| commit | 8b5e218d8caa7592d26e68157bd71f50426bb7ae (patch) | |
| tree | 6f9b84108386b4185629317afe9ea47f6906b967 | |
| parent | 31a67102f4762df5544bc2dfb34a931233d2a5b2 (diff) | |
| download | linux-8b5e218d8caa7592d26e68157bd71f50426bb7ae.tar.xz | |
can: flexcan: add PM support
tested on an i.MX257
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -rw-r--r-- | drivers/net/can/flexcan.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 1efb08386c61..0d058b0a3cb6 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -1050,6 +1050,42 @@ static struct of_device_id flexcan_of_match[] = { {}, }; +#ifdef CONFIG_PM +static int flexcan_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct flexcan_priv *priv = netdev_priv(dev); + + flexcan_chip_disable(priv); + + if (netif_running(dev)) { + netif_stop_queue(dev); + netif_device_detach(dev); + } + priv->can.state = CAN_STATE_SLEEPING; + + return 0; +} + +static int flexcan_resume(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + struct flexcan_priv *priv = netdev_priv(dev); + + priv->can.state = CAN_STATE_ERROR_ACTIVE; + if (netif_running(dev)) { + netif_device_attach(dev); + netif_start_queue(dev); + } + flexcan_chip_enable(priv); + + return 0; +} +#else +#define flexcan_suspend NULL +#define flexcan_resume NULL +#endif + static struct platform_driver flexcan_driver = { .driver = { .name = DRV_NAME, @@ -1058,6 +1094,8 @@ static struct platform_driver flexcan_driver = { }, .probe = flexcan_probe, .remove = __devexit_p(flexcan_remove), + .suspend = flexcan_suspend, + .resume = flexcan_resume, }; module_platform_driver(flexcan_driver); |