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    ARM: at91: cpuidle: Convert to platform driver · 5ad945ea
    Daniel Lezcano 提交于
    Using the platform driver model is a good way to separate the cpuidle specific
    code from the low level pm code. It allows to remove the dependency between
    these two components.
    
    The platform_device is located in the pm code and a 'set' function has been
    added to set the standby function from the AT91_SOC_START initialization
    function. Each SoC with a cpuidle driver will set the standby function in the
    platform_data field at init time. Then pm code will register the cpuidle
    platform device.
    
    The cpuidle driver will register the platform_driver and use the device's
    platform_data as a standby callback in the idle path.
    
    The at91_pm_enter function contains a { if then else } based on cpu_is_xx
    similar to what was in cpuidle. This is considered dangerous when adding a new
    SoC. Like the cpuidle driver, a standby ops is defined and assigned when the
    SoC init function specifies what is its standby function and reused in the
    at91_pm_enter's 'case' block.
    Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
    Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
    Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
    5ad945ea
at91sam9263.c 10.6 KB