• Grygorii Strashko's avatar
    phy: core: rework phy_set_mode to accept phy mode and submode · 79a5a18a
    Grygorii Strashko authored
    Currently the attempt to add support for Ethernet interface mode PHY
    (MII/GMII/RGMII) will lead to the necessity of extending enum phy_mode and
    duplicate there values from phy_interface_t enum (or introduce more PHY
    callbacks) [1]. Both approaches are ineffective and would lead to fast
    bloating of enum phy_mode or struct phy_ops in the process of adding more
    PHYs for different subsystems which will make them unmaintainable.
    
    As discussed in [1] the solution could be to introduce dual level PHYs mode
    configuration - PHY mode and PHY submode. The PHY mode will define generic
    PHY type (subsystem - PCIE/ETHERNET/USB_) while the PHY submode - subsystem
    specific interface mode. The last is usually already defined in
    corresponding subsystem headers (phy_interface_t for Ethernet, enum
    usb_device_speed for USB).
    
    This patch is cumulative change which refactors PHY framework code to
    support dual level PHYs mode configuration - PHY mode and PHY submode. It
    extends .set_mode() callback to support additional parameter "int submode"
    and converts all corresponding PHY drivers to support new .set_mode()
    callback declaration.
    The new extended PHY API
     int phy_set_mode_ext(struct phy *phy, enum phy_mode mode, int submode)
    is introduced to support dual level PHYs mode configuration and existing
    phy_set_mode() API is converted to macros, so PHY framework consumers do
    not need to be changed (~21 matches).
    
    [1] http://lkml.kernel.org/r/d63588f6-9ab0-848a-5ad4-8073143bd95d@ti.comSigned-off-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
    Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
    79a5a18a
phy-meson-gxl-usb3.c 8.09 KB