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reset: Add of_reset_control_get

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In some cases, you might need to deassert from reset an hardware block that
doesn't associated to a struct device (CPUs, timers, etc.).

Add a small helper to retrieve the reset controller from the device tree
without the need to pass a struct device.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Maxime Ripard 2013-12-20 22:41:07 +01:00 • committed by Philipp Zabel
parent 0c5b2b915a
commit fc0a592156
2 changed files with 34 additions and 9 deletions
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4
include/linux/reset.h
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@ -1,6 +1,8 @@
#ifndef _LINUX_RESET_H_
#define _LINUX_RESET_H_
#include <linux/of.h>
struct device;
struct reset_control;
@ -8,6 +10,8 @@ int reset_control_reset(struct reset_control *rstc);
int reset_control_assert(struct reset_control *rstc);
int reset_control_deassert(struct reset_control *rstc);
struct reset_control *of_reset_control_get(struct device_node *node,
const char *id);
struct reset_control *reset_control_get(struct device *dev, const char *id);
void reset_control_put(struct reset_control *rstc);
struct reset_control *devm_reset_control_get(struct device *dev, const char *id);