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viafb: General power management infrastructure

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Multiple devices need S/R hooks (framebuffer, GPIO, camera).
Add infrastructure and convert existing framebuffer code to the new
model.

This patch should create no functional change.
Based on earlier work by Jonathan Corbet.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Daniel Drake 2010-10-28 18:23:01 +01:00 • committed by Florian Tobias Schandinat
parent 51f4332bb5
commit 751305d9b2
4 changed files with 107 additions and 23 deletions
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15
include/linux/via-core.h
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@ -59,6 +59,21 @@ struct via_port_cfg {
u8 ioport_index;
};
/*
* Allow subdevs to register suspend/resume hooks.
*/
#ifdef CONFIG_PM
struct viafb_pm_hooks {
struct list_head list;
int (*suspend)(void *private);
int (*resume)(void *private);
void *private;
};
void viafb_pm_register(struct viafb_pm_hooks *hooks);
void viafb_pm_unregister(struct viafb_pm_hooks *hooks);
#endif /* CONFIG_PM */
/*
* This is the global viafb "device" containing stuff needed by
* all subdevs.