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Documentation: networking: update phy.txt with recent changes 

The PHY library was missing a bunch of newly added PHY driver callbacks
along with a smallish description of what they do, fix that.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-02-17 13:34:04 -08:00 committed by David S. Miller
parent 9df81dd758
commit 7f6224b7c7
1 changed files with 9 additions and 0 deletions
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Documentation/networking/phy.txt
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@ -253,16 +253,25 @@ Writing a PHY driver
Each driver consists of a number of function pointers:
soft_reset: perform a PHY software reset
config_init: configures PHY into a sane state after a reset.
For instance, a Davicom PHY requires descrambling disabled.
probe: Allocate phy->priv, optionally refuse to bind.
PHY may not have been reset or had fixups run yet.
suspend/resume: power management
config_aneg: Changes the speed/duplex/negotiation settings
aneg_done: Determines the auto-negotiation result
read_status: Reads the current speed/duplex/negotiation settings
ack_interrupt: Clear a pending interrupt
did_interrupt: Checks if the PHY generated an interrupt
config_intr: Enable or disable interrupts
remove: Does any driver take-down
ts_info: Queries about the HW timestamping status
hwtstamp: Set the PHY HW timestamping configuration
rxtstamp: Requests a receive timestamp at the PHY level for a 'skb'
txtsamp: Requests a transmit timestamp at the PHY level for a 'skb'
set_wol: Enable Wake-on-LAN at the PHY level
get_wol: Get the Wake-on-LAN status at the PHY level
Of these, only config_aneg and read_status are required to be
assigned by the driver code. The rest are optional. Also, it is