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Driver Core: Add platform device arch data V3

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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.

[rjw: This change is for power management mostly and that's why it
 goes through the suspend tree.]

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Magnus Damm 2009-07-08 13:21:31 +02:00 committed by Rafael J. Wysocki
parent aea1f7964a
commit d7aacaddca
8 changed files with 24 additions and 0 deletions
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3
arch/arm/include/asm/device.h
View file

@ -12,4 +12,7 @@ struct dev_archdata {
#endif
};
struct pdev_archdata {
};
#endif

3
arch/ia64/include/asm/device.h
View file

@ -15,4 +15,7 @@ struct dev_archdata {
#endif
};
struct pdev_archdata {
};
#endif /* _ASM_IA64_DEVICE_H */

3
arch/microblaze/include/asm/device.h
View file

@ -16,6 +16,9 @@ struct dev_archdata {
struct device_node *of_node;
};
struct pdev_archdata {
};
#endif /* _ASM_MICROBLAZE_DEVICE_H */

3
arch/powerpc/include/asm/device.h
View file

@ -30,4 +30,7 @@ dev_archdata_get_node(const struct dev_archdata *ad)
return ad->of_node;
}
struct pdev_archdata {
};
#endif /* _ASM_POWERPC_DEVICE_H */

3
arch/sparc/include/asm/device.h
View file

@ -32,4 +32,7 @@ dev_archdata_get_node(const struct dev_archdata *ad)
return ad->prom_node;
}
struct pdev_archdata {
};
#endif /* _ASM_SPARC_DEVICE_H */

3
arch/x86/include/asm/device.h
View file

@ -13,4 +13,7 @@ struct dma_map_ops *dma_ops;
#endif
};
struct pdev_archdata {
};
#endif /* _ASM_X86_DEVICE_H */

3
include/asm-generic/device.h
View file

@ -9,4 +9,7 @@
struct dev_archdata {
};
struct pdev_archdata {
};
#endif /* _ASM_GENERIC_DEVICE_H */

3
include/linux/platform_device.h
View file

@ -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)