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| author | Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com> | 2015-01-22 01:19:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-26 15:26:41 -0800 |
| commit | b71af04676e9cfea6be49a8f40db36785017e944 (patch) | |
| tree | 442d27b1ab2abe6bf1aca088b5a35fcfc54ac62a /drivers/net/ethernet/renesas | |
| parent | e7d7e89846d53e27d6e48a746c5c69e69c22aaaa (diff) | |
| download | linux-b71af04676e9cfea6be49a8f40db36785017e944.tar.bz2 | |
sh_eth: add more PM methods
Add sh_eth_{suspend|resume}() implementing {suspend|resume|freeze|thaw|poweroff|
restore}() PM methods to make it possible to restore from hibernation not only
in Linux but also in e.g. U-Boot and to have more determined state on resume/
restore.
Signed-off-by: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
[Sergei: moved sh_eth_{suspend|resume}() before sh_eth_runtime_nop(), enclosed
them with #ifdef CONFIG_PM_SLEEP, reordered the local variables, got rid of
*goto* and label, reordered macro invocations, renamed, modified the changelog.]
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/renesas')
| -rw-r--r-- | drivers/net/ethernet/renesas/sh_eth.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 96219de153e1..fe0277a35507 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -2947,6 +2947,36 @@ static int sh_eth_drv_remove(struct platform_device *pdev) } #ifdef CONFIG_PM +#ifdef CONFIG_PM_SLEEP +static int sh_eth_suspend(struct device *dev) +{ + struct net_device *ndev = dev_get_drvdata(dev); + int ret = 0; + + if (netif_running(ndev)) { + netif_device_detach(ndev); + ret = sh_eth_close(ndev); + } + + return ret; +} + +static int sh_eth_resume(struct device *dev) +{ + struct net_device *ndev = dev_get_drvdata(dev); + int ret = 0; + + if (netif_running(ndev)) { + ret = sh_eth_open(ndev); + if (ret < 0) + return ret; + netif_device_attach(ndev); + } + + return ret; +} +#endif + static int sh_eth_runtime_nop(struct device *dev) { /* Runtime PM callback shared between ->runtime_suspend() @@ -2960,6 +2990,7 @@ static int sh_eth_runtime_nop(struct device *dev) } static const struct dev_pm_ops sh_eth_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(sh_eth_suspend, sh_eth_resume) SET_RUNTIME_PM_OPS(sh_eth_runtime_nop, sh_eth_runtime_nop, NULL) }; #define SH_ETH_PM_OPS (&sh_eth_dev_pm_ops) |