Messages in this thread | | | From | Florian Fainelli <> | Subject | [PATCH net-next v2 0/3] Support for Wake-on-LAN for Broadcom | Date | Tue, 9 May 2023 15:34:00 -0700 |
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This patch series adds support for Wake-on-LAN to the Broadcom PHY driver. Specifically the BCM54210E/B50212E are capable of supporting Wake-on-LAN using an external pin typically wired up to a system's GPIO.
These PHY operate a programmable Ethernet MAC destination address comparator which will fire up an interrupt whenever a match is received. Because of that, it was necessary to introduce patch #1 which allows the PHY driver's ->suspend() routine to be called unconditionally. This is necessary in our case because we need a hook point into the device suspend/resume flow to enable the wake-up interrupt as late as possible.
Patch #2 adds support for the Broadcom PHY library and driver for Wake-on-LAN proper with the WAKE_UCAST, WAKE_MCAST, WAKE_BCAST, WAKE_MAGIC and WAKE_MAGICSECURE. Note that WAKE_FILTER is supportable, however this will require further discussions and be submitted as a RFC series later on.
Patch #3 updates the GENET driver to defer to the PHY for Wake-on-LAN if the PHY supports it, thus allowing the MAC to be powered down to conserve power.
Changes in v2:
- introduce PHY_ALWAYS_CALL_SUSPEND and only have the Broadcom PHY driver set this flag to minimize changes to the suspend flow to only drivers that need it
- corrected possibly uninitialized variable in bcm54xx_set_wakeup_irq (Simon)
Florian Fainelli (3): net: phy: Allow drivers to always call into ->suspend() net: phy: broadcom: Add support for Wake-on-LAN net: bcmgenet: Add support for PHY-based Wake-on-LAN
.../ethernet/broadcom/genet/bcmgenet_wol.c | 14 ++ drivers/net/phy/bcm-phy-lib.c | 212 ++++++++++++++++++ drivers/net/phy/bcm-phy-lib.h | 5 + drivers/net/phy/broadcom.c | 126 ++++++++++- drivers/net/phy/phy_device.c | 5 +- include/linux/brcmphy.h | 55 +++++ include/linux/phy.h | 4 + 7 files changed, 416 insertions(+), 5 deletions(-)
-- 2.34.1
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