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[DRIVER MODEL] Improved dynamically allocated platform_device interface

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Re-jig the simple platform device support to allow private data
to be attached to a platform device, as well as allowing the
parent device to be set.

Example usage:

	pdev = platform_device_alloc("mydev", id);
	if (pdev) {
		err = platform_device_add_resources(pdev, &resources,
						    ARRAY_SIZE(resources));
		if (err == 0)
			err = platform_device_add_data(pdev, &platform_data,
						       sizeof(platform_data));
		if (err == 0)
			err = platform_device_add(pdev);
	} else {
		err = -ENOMEM;
	}
	if (err)
		platform_device_put(pdev);

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Russell King 2005-11-05 21:19:33 +00:00 • committed by Russell King
commit 37c12e7497
2 changed files with 132 additions and 27 deletions
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6
include/linux/platform_device.h
View file

@ -37,4 +37,10 @@ extern int platform_add_devices(struct platform_device **, int);
extern struct platform_device *platform_device_register_simple(char *, unsigned int, struct resource *, unsigned int);
extern struct platform_device *platform_device_alloc(const char *name, unsigned int id);
extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num);
extern int platform_device_add_data(struct platform_device *pdev, void *data, size_t size);
extern int platform_device_add(struct platform_device *pdev);
extern void platform_device_put(struct platform_device *pdev);
#endif /* _PLATFORM_DEVICE_H_ */