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    Subject[PATCH] Driver Core: Add platform device arch data V3
    From: Magnus Damm <damm@igel.co.jp>

    Allow architecture specific data in struct platform_device V3.

    With this patch struct pdev_archdata is added to struct
    platform_device, similar to struct dev_archdata in found in
    struct device. Useful for architecture code that needs to
    keep extra data associated with each platform device.

    Struct pdev_archdata is different from dev.platform_data, the
    convention is that dev.platform_data points to driver-specific
    data. It may or may not be required by the driver. The format
    of this depends on driver but is the same across architectures.

    The structure pdev_archdata is a place for architecture specific
    data. This data is handled by architecture specific code (for
    example runtime PM), and since it is architecture specific it
    should _never_ be touched by device driver code. Exactly like
    struct dev_archdata but for platform devices.

    Signed-off-by: Magnus Damm <damm@igel.co.jp>
    ---

    Applies to next-20090610.

    Changes since V2:
    - updated commit message, thanks to Rafael for feedback

    Changes since V1:
    - post to lkml, keep linux-pm cc:ed
    - add struct pdev_archdata to asm-generic
    - add struct pdev_archdata to non-generic architectures
    - drop Kconfig bits

    arch/arm/include/asm/device.h | 3 +++
    arch/ia64/include/asm/device.h | 3 +++
    arch/microblaze/include/asm/device.h | 3 +++
    arch/powerpc/include/asm/device.h | 3 +++
    arch/sparc/include/asm/device.h | 3 +++
    arch/x86/include/asm/device.h | 3 +++
    include/asm-generic/device.h | 3 +++
    include/linux/platform_device.h | 3 +++
    8 files changed, 24 insertions(+)

    --- 0001/arch/arm/include/asm/device.h
    +++ work/arch/arm/include/asm/device.h 2009-06-01 12:19:51.000000000 +0900
    @@ -12,4 +12,7 @@ struct dev_archdata {
    #endif
    };

    +struct pdev_archdata {
    +};
    +
    #endif
    --- 0001/arch/ia64/include/asm/device.h
    +++ work/arch/ia64/include/asm/device.h 2009-06-01 12:18:11.000000000 +0900
    @@ -15,4 +15,7 @@ struct dev_archdata {
    #endif
    };

    +struct pdev_archdata {
    +};
    +
    #endif /* _ASM_IA64_DEVICE_H */
    --- 0001/arch/microblaze/include/asm/device.h
    +++ work/arch/microblaze/include/asm/device.h 2009-06-01 12:19:32.000000000 +0900
    @@ -16,6 +16,9 @@ struct dev_archdata {
    struct device_node *of_node;
    };

    +struct pdev_archdata {
    +};
    +
    #endif /* _ASM_MICROBLAZE_DEVICE_H */


    --- 0001/arch/powerpc/include/asm/device.h
    +++ work/arch/powerpc/include/asm/device.h 2009-06-01 12:16:28.000000000 +0900
    @@ -30,4 +30,7 @@ dev_archdata_get_node(const struct dev_a
    return ad->of_node;
    }

    +struct pdev_archdata {
    +};
    +
    #endif /* _ASM_POWERPC_DEVICE_H */
    --- 0001/arch/sparc/include/asm/device.h
    +++ work/arch/sparc/include/asm/device.h 2009-06-01 12:18:57.000000000 +0900
    @@ -32,4 +32,7 @@ dev_archdata_get_node(const struct dev_a
    return ad->prom_node;
    }

    +struct pdev_archdata {
    +};
    +
    #endif /* _ASM_SPARC_DEVICE_H */
    --- 0001/arch/x86/include/asm/device.h
    +++ work/arch/x86/include/asm/device.h 2009-06-01 12:17:28.000000000 +0900
    @@ -13,4 +13,7 @@ struct dma_map_ops *dma_ops;
    #endif
    };

    +struct pdev_archdata {
    +};
    +
    #endif /* _ASM_X86_DEVICE_H */
    --- 0001/include/asm-generic/device.h
    +++ work/include/asm-generic/device.h 2009-06-01 12:16:20.000000000 +0900
    @@ -9,4 +9,7 @@
    struct dev_archdata {
    };

    +struct pdev_archdata {
    +};
    +
    #endif /* _ASM_GENERIC_DEVICE_H */
    --- 0001/include/linux/platform_device.h
    +++ work/include/linux/platform_device.h 2009-06-01 12:14:43.000000000 +0900
    @@ -22,6 +22,9 @@ struct platform_device {
    struct resource * resource;

    struct platform_device_id *id_entry;
    +
    + /* arch specific additions */
    + struct pdev_archdata archdata;
    };

    #define platform_get_device_id(pdev) ((pdev)->id_entry)

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