From 1d5439b9a29b1386d44a617cbaf2f7acde1d697c Mon Sep 17 00:00:00 2001 From: "Arce, Abraham" Date: Thu, 28 Oct 2010 18:57:20 +0000 Subject: [PATCH] ks8851: suspend resume support Add suspend/resume support using default open/stop interface methods to do hardware dependant operations. On suspend, same low power state (soft power mode) will be kept, the following blocks will be disabled: - Internal PLL Clock - Tx/Rx PHY - MAC - SPI Interface Signed-off-by: Abraham Arce Signed-off-by: David S. Miller --- drivers/net/ks8851.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/net/ks8851.c b/drivers/net/ks8851.c index 51919fcd50c2..0fa4a9887ba2 100644 --- a/drivers/net/ks8851.c +++ b/drivers/net/ks8851.c @@ -1545,6 +1545,37 @@ static int ks8851_read_selftest(struct ks8851_net *ks) /* driver bus management functions */ +#ifdef CONFIG_PM +static int ks8851_suspend(struct spi_device *spi, pm_message_t state) +{ + struct ks8851_net *ks = dev_get_drvdata(&spi->dev); + struct net_device *dev = ks->netdev; + + if (netif_running(dev)) { + netif_device_detach(dev); + ks8851_net_stop(dev); + } + + return 0; +} + +static int ks8851_resume(struct spi_device *spi) +{ + struct ks8851_net *ks = dev_get_drvdata(&spi->dev); + struct net_device *dev = ks->netdev; + + if (netif_running(dev)) { + ks8851_net_open(dev); + netif_device_attach(dev); + } + + return 0; +} +#else +#define ks8851_suspend NULL +#define ks8851_resume NULL +#endif + static int __devinit ks8851_probe(struct spi_device *spi) { struct net_device *ndev; @@ -1679,6 +1710,8 @@ static struct spi_driver ks8851_driver = { }, .probe = ks8851_probe, .remove = __devexit_p(ks8851_remove), + .suspend = ks8851_suspend, + .resume = ks8851_resume, }; static int __init ks8851_init(void) -- GitLab