• Kristoffer Ericson's avatar
    [ARM] 4506/1: HP Jornada 7XX: Addition of SSP Platform Driver · 69ebb222
    Kristoffer Ericson authored
    These patches add full SSP/MCU support for the HP Jornada 720
    machine.  Its needed to handle keyboard, touchscreen, battery
    and backlight/lcd.
    
    The main driver exports functions and the header file exports
    the command values. When talking to the MCU the general procedure
    is to start MCU, send command (using ssp_inout(command)), the
    proper reply is always TXDUMMY.  After receiving TXDUMMY you can
    send the value you wish pushed (for example brightness level).
    End with ssp_end() so the spinlock gets unlocked.
    
    Drivers using this havent been implemented yet, but will shortly.
    Signed-off-by: default avatarKristoffer Ericson <Kristoffer.ericson@gmail.com>
    Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
    69ebb222
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