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authorHans de Goede <hdegoede@redhat.com>2016-02-23 18:46:24 +0100
committerPhilipp Zabel <p.zabel@pengutronix.de>2016-03-30 15:42:01 +0200
commit6c96f05c8bb8bc4177613ef3c23a56b455e75887 (patch)
tree58c17810ceabd3002d2dad81fb693d5f22887b4a /drivers/reset/core.c
parentf55532a0c0b8bb6148f4e07853b876ef73bc69ca (diff)
downloadlinux-stericsson-6c96f05c8bb8bc4177613ef3c23a56b455e75887.tar.gz
reset: Make [of_]reset_control_get[_foo] functions wrappers
With both the regular, _by_index and _optional variants we already have quite a few variants of [of_]reset_control_get[_foo], the upcoming addition of shared reset lines support makes this worse. This commit changes all the variants into wrappers around common core functions. For completeness sake this commit also adds a new devm_get_reset_control_by_index wrapper. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/reset/core.c')
-rw-r--r--drivers/reset/core.c84
1 files changed, 17 insertions, 67 deletions
diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index f15f150b79da..bdf1763da87a 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -136,18 +136,8 @@ int reset_control_status(struct reset_control *rstc)
}
EXPORT_SYMBOL_GPL(reset_control_status);
-/**
- * of_reset_control_get_by_index - Lookup and obtain a reference to a reset
- * controller by index.
- * @node: device to be reset by the controller
- * @index: index of the reset controller
- *
- * This is to be used to perform a list of resets for a device or power domain
- * in whatever order. Returns a struct reset_control or IS_ERR() condition
- * containing errno.
- */
-struct reset_control *of_reset_control_get_by_index(struct device_node *node,
- int index)
+struct reset_control *__of_reset_control_get(struct device_node *node,
+ const char *id, int index)
{
struct reset_control *rstc;
struct reset_controller_dev *r, *rcdev;
@@ -155,6 +145,16 @@ struct reset_control *of_reset_control_get_by_index(struct device_node *node,
int rstc_id;
int ret;
+ if (!node)
+ return ERR_PTR(-EINVAL);
+
+ if (id) {
+ index = of_property_match_string(node,
+ "reset-names", id);
+ if (index < 0)
+ return ERR_PTR(-ENOENT);
+ }
+
ret = of_parse_phandle_with_args(node, "resets", "#reset-cells",
index, &args);
if (ret)
@@ -200,49 +200,7 @@ struct reset_control *of_reset_control_get_by_index(struct device_node *node,
return rstc;
}
-EXPORT_SYMBOL_GPL(of_reset_control_get_by_index);
-
-/**
- * of_reset_control_get - Lookup and obtain a reference to a reset controller.
- * @node: device to be reset by the controller
- * @id: reset line name
- *
- * Returns a struct reset_control or IS_ERR() condition containing errno.
- *
- * Use of id names is optional.
- */
-struct reset_control *of_reset_control_get(struct device_node *node,
- const char *id)
-{
- int index = 0;
-
- if (id) {
- index = of_property_match_string(node,
- "reset-names", id);
- if (index < 0)
- return ERR_PTR(-ENOENT);
- }
- return of_reset_control_get_by_index(node, index);
-}
-EXPORT_SYMBOL_GPL(of_reset_control_get);
-
-/**
- * reset_control_get - Lookup and obtain a reference to a reset controller.
- * @dev: device to be reset by the controller
- * @id: reset line name
- *
- * Returns a struct reset_control or IS_ERR() condition containing errno.
- *
- * Use of id names is optional.
- */
-struct reset_control *reset_control_get(struct device *dev, const char *id)
-{
- if (!dev)
- return ERR_PTR(-EINVAL);
-
- return of_reset_control_get(dev->of_node, id);
-}
-EXPORT_SYMBOL_GPL(reset_control_get);
+EXPORT_SYMBOL_GPL(__of_reset_control_get);
/**
* reset_control_put - free the reset controller
@@ -264,16 +222,8 @@ static void devm_reset_control_release(struct device *dev, void *res)
reset_control_put(*(struct reset_control **)res);
}
-/**
- * devm_reset_control_get - resource managed reset_control_get()
- * @dev: device to be reset by the controller
- * @id: reset line name
- *
- * Managed reset_control_get(). For reset controllers returned from this
- * function, reset_control_put() is called automatically on driver detach.
- * See reset_control_get() for more information.
- */
-struct reset_control *devm_reset_control_get(struct device *dev, const char *id)
+struct reset_control *__devm_reset_control_get(struct device *dev,
+ const char *id, int index)
{
struct reset_control **ptr, *rstc;
@@ -282,7 +232,7 @@ struct reset_control *devm_reset_control_get(struct device *dev, const char *id)
if (!ptr)
return ERR_PTR(-ENOMEM);
- rstc = reset_control_get(dev, id);
+ rstc = __of_reset_control_get(dev ? dev->of_node : NULL, id, index);
if (!IS_ERR(rstc)) {
*ptr = rstc;
devres_add(dev, ptr);
@@ -292,7 +242,7 @@ struct reset_control *devm_reset_control_get(struct device *dev, const char *id)
return rstc;
}
-EXPORT_SYMBOL_GPL(devm_reset_control_get);
+EXPORT_SYMBOL_GPL(__devm_reset_control_get);
/**
* device_reset - find reset controller associated with the device