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    arm64: psci: remove ACPI coupling · c5a13305
    Mark Rutland 提交于
    The 32-bit ARM port doesn't have ACPI headers, and conditionally
    including them is going to look horrendous. In preparation for sharing
    the PSCI invocation code with 32-bit, move the acpi_psci_* function
    declarations and definitions such that the PSCI client code need not
    include ACPI headers.
    
    While it would seem like we could simply hide the ACPI includes in
    psci.h, the ACPI headers have hilarious circular dependencies which make
    this infeasible without reorganising most of ACPICA. So rather than
    doing that, move the acpi_psci_* prototypes into psci.h.
    
    The psci_acpi_init function is made dependent on CONFIG_ACPI (with a
    stub implementation in asm/psci.h) such that it need not be built for
    32-bit ARM or kernels without ACPI support. The currently missing __init
    annotations are added to the prototypes in the header.
    Signed-off-by: NMark Rutland <mark.rutland@arm.com>
    Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
    Acked-by: NHanjun Guo <hanjun.guo@linaro.org>
    Reviewed-by: NAl Stone <al.stone@linaro.org>
    Reviewed-by: NAshwin Chaugule <ashwin.chaugule@linaro.org>
    Tested-by: NHanjun Guo <hanjun.guo@linaro.org>
    Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
    Cc: Will Deacon <will.deacon@arm.com>
    c5a13305
psci.c 13.4 KB