| Message ID | 1386171888-28190-6-git-send-email-sebastian.hesselbarth@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hello. On 12/04/2013 06:44 PM, Sebastian Hesselbarth wrote: > Since phy_attach ensures PHYs are resumed, we can now suspend all > PHYs that have no attached netdev after initcalls. > Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> > --- > Changelog: > RFCv1->RFCv2: > - only check for phydev->attached_dev and let phy_suspend decide on > performing suspend or not (Suggested by Florian) > @Florian: You suggested to 'make sure that the MDIO bus suspend policy > was set to "auto"'. I wasn't able to find any clue how to check that, > so I ignored that for now. > Cc: David Miller <davem@davemloft.net> > Cc: Florian Fainelli <f.fainelli@gmail.com> > Cc: Mugunthan V N <mugunthanvnm@ti.com> > Cc: netdev@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > --- > drivers/net/phy/mdio_bus.c | 25 +++++++++++++++++++++++++ > 1 files changed, 25 insertions(+), 0 deletions(-) > diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c > index 5617876..f533d17 100644 > --- a/drivers/net/phy/mdio_bus.c > +++ b/drivers/net/phy/mdio_bus.c > @@ -320,6 +320,31 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv) > (phydev->phy_id & phydrv->phy_id_mask)); > } > > +static int mdio_bus_suspend_unused(struct device *busdev, void *data) > +{ > + struct mii_bus *bus = to_mii_bus(busdev); > + struct phy_device *phydev; > + int i; > + > + for (i = 0; i < PHY_MAX_ADDR; i++) { > + if (!bus->phy_map[i]) > + continue; > + > + phydev = to_phy_device(&bus->phy_map[i]->dev); Why so complex? 'bus->phy_map[i]' already gives you 'phydev'. > + if (!phydev->attached_dev) > + phy_suspend(phydev); > + } > + > + return 0; > +} WBR, Sergei
2013/12/4 Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>: > Since phy_attach ensures PHYs are resumed, we can now suspend all > PHYs that have no attached netdev after initcalls. > > Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> > --- > Changelog: > RFCv1->RFCv2: > - only check for phydev->attached_dev and let phy_suspend decide on > performing suspend or not (Suggested by Florian) > > @Florian: You suggested to 'make sure that the MDIO bus suspend policy > was set to "auto"'. I wasn't able to find any clue how to check that, > so I ignored that for now. I was looking at the sysfs knob which controls the auto suspend policy, but I am not sure myself how to query that from the kernel, so let's just forget about it. > > Cc: David Miller <davem@davemloft.net> > Cc: Florian Fainelli <f.fainelli@gmail.com> > Cc: Mugunthan V N <mugunthanvnm@ti.com> > Cc: netdev@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > --- > drivers/net/phy/mdio_bus.c | 25 +++++++++++++++++++++++++ > 1 files changed, 25 insertions(+), 0 deletions(-) > > diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c > index 5617876..f533d17 100644 > --- a/drivers/net/phy/mdio_bus.c > +++ b/drivers/net/phy/mdio_bus.c > @@ -320,6 +320,31 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv) > (phydev->phy_id & phydrv->phy_id_mask)); > } > > +static int mdio_bus_suspend_unused(struct device *busdev, void *data) > +{ > + struct mii_bus *bus = to_mii_bus(busdev); > + struct phy_device *phydev; > + int i; > + > + for (i = 0; i < PHY_MAX_ADDR; i++) { > + if (!bus->phy_map[i]) > + continue; > + > + phydev = to_phy_device(&bus->phy_map[i]->dev); > + if (!phydev->attached_dev) > + phy_suspend(phydev); > + } > + > + return 0; > +} > + > +static int mdio_bus_class_suspend_unused(void) > +{ > + return class_for_each_device(&mdio_bus_class, NULL, NULL, > + mdio_bus_suspend_unused); > +} > +late_initcall_sync(mdio_bus_class_suspend_unused); > + > #ifdef CONFIG_PM > > static bool mdio_bus_phy_may_suspend(struct phy_device *phydev) > -- > 1.7.2.5 >
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 5617876..f533d17 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -320,6 +320,31 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv) (phydev->phy_id & phydrv->phy_id_mask)); } +static int mdio_bus_suspend_unused(struct device *busdev, void *data) +{ + struct mii_bus *bus = to_mii_bus(busdev); + struct phy_device *phydev; + int i; + + for (i = 0; i < PHY_MAX_ADDR; i++) { + if (!bus->phy_map[i]) + continue; + + phydev = to_phy_device(&bus->phy_map[i]->dev); + if (!phydev->attached_dev) + phy_suspend(phydev); + } + + return 0; +} + +static int mdio_bus_class_suspend_unused(void) +{ + return class_for_each_device(&mdio_bus_class, NULL, NULL, + mdio_bus_suspend_unused); +} +late_initcall_sync(mdio_bus_class_suspend_unused); + #ifdef CONFIG_PM static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)
Since phy_attach ensures PHYs are resumed, we can now suspend all PHYs that have no attached netdev after initcalls. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> --- Changelog: RFCv1->RFCv2: - only check for phydev->attached_dev and let phy_suspend decide on performing suspend or not (Suggested by Florian) @Florian: You suggested to 'make sure that the MDIO bus suspend policy was set to "auto"'. I wasn't able to find any clue how to check that, so I ignored that for now. Cc: David Miller <davem@davemloft.net> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Mugunthan V N <mugunthanvnm@ti.com> Cc: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/net/phy/mdio_bus.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-)