• Giuseppe CAVALLARO's avatar
    stmmac: add the Energy Efficient Ethernet support · d765955d
    Giuseppe CAVALLARO authored
    
    
    This patch adds the Energy Efficient Ethernet support to the stmmac.
    
    Please see the driver's documentation for further details about this support
    in the driver.
    
    Thanks also goes to Rayagond Kokatanur for his first implementation.
    
    Note:
     to clearly manage and expose the lpi interrupt status and eee ethtool
     stats I've had to do some modifications to the driver's design and I
     found really useful to move other parts of the code (e.g. mmc irq stat)
     in the main directly. So this means that some core has been reworked
     to introduce the EEE.
    
    v1: initial patch
    v2: fixed some sparse issues (typos)
    v3: erroneously sent the v2 renamed as v3
    v4:
    	o Fixed the return value of the stmmac_eee_init as suggested by D.Miller
    	o Totally reviewed the ethtool support for EEE
    	o Added a new internal parameter to tune the SW timer for TX LPI.
    v5: do not change any eee setting in case of the stmmac_ethtool_op_set_eee fails
        (it has to return -EOPNOTSUPP in that case).
    Signed-off-by: default avatarGiuseppe Cavallaro <peppe.cavallaro@st.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    d765955d