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reset: Add acquired flag to of_reset_control_array_get() 

In order to be able to request an array of reset controls in acquired or
released mode, add the acquired flag to of_reset_control_array_get() and
pass the flag to subsequent calls of __of_reset_control_get().

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Thierry Reding 2019-02-21 16:25:54 +01:00 committed by Philipp Zabel
parent c84b0326d5
commit f31d5c24fb
3 changed files with 16 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/reset/core.c
View File

@ -830,12 +830,15 @@ static int of_reset_control_get_count(struct device_node *node)
* @np: device node for the device that requests the reset controls array
* @shared: whether reset controls are shared or not
* @optional: whether it is optional to get the reset controls
* @acquired: only one reset control may be acquired for a given controller
* and ID
*
* Returns pointer to allocated reset_control_array on success or
* error on failure
*/
struct reset_control *
of_reset_control_array_get(struct device_node *np, bool shared, bool optional)
of_reset_control_array_get(struct device_node *np, bool shared, bool optional,
bool acquired)
{
struct reset_control_array *resets;
struct reset_control *rstc;
@ -851,7 +854,7 @@ of_reset_control_array_get(struct device_node *np, bool shared, bool optional)
for (i = 0; i < num; i++) {
rstc = __of_reset_control_get(np, NULL, i, shared, optional,
true);
acquired);
if (IS_ERR(rstc))
goto err_rst;
resets->rstc[i] = rstc;
@ -898,7 +901,7 @@ devm_reset_control_array_get(struct device *dev, bool shared, bool optional)
if (!devres)
return ERR_PTR(-ENOMEM);
rstc = of_reset_control_array_get(dev->of_node, shared, optional);
rstc = of_reset_control_array_get(dev->of_node, shared, optional, true);
if (IS_ERR(rstc)) {
devres_free(devres);
return rstc;

3
drivers/usb/dwc3/dwc3-of-simple.c
View File

@ -107,7 +107,8 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
simple->pulse_resets = true;
}
simple->resets = of_reset_control_array_get(np, shared_resets, true);
simple->resets = of_reset_control_array_get(np, shared_resets, true,
true);
if (IS_ERR(simple->resets)) {
ret = PTR_ERR(simple->resets);
dev_err(dev, "failed to get device resets, err=%d\n", ret);

14
include/linux/reset.h
View File

@ -32,7 +32,8 @@ struct reset_control *__devm_reset_control_get(struct device *dev,
struct reset_control *devm_reset_control_array_get(struct device *dev,
bool shared, bool optional);
struct reset_control *of_reset_control_array_get(struct device_node *np,
bool shared, bool optional);
bool shared, bool optional,
bool acquired);
int reset_control_get_count(struct device *dev);
@ -107,7 +108,8 @@ devm_reset_control_array_get(struct device *dev, bool shared, bool optional)
}
static inline struct reset_control *
of_reset_control_array_get(struct device_node *np, bool shared, bool optional)
of_reset_control_array_get(struct device_node *np, bool shared, bool optional,
bool acquired)
{
return optional ? NULL : ERR_PTR(-ENOTSUPP);
}
@ -465,24 +467,24 @@ devm_reset_control_array_get_optional_shared(struct device *dev)
static inline struct reset_control *
of_reset_control_array_get_exclusive(struct device_node *node)
{
return of_reset_control_array_get(node, false, false);
return of_reset_control_array_get(node, false, false, true);
}
static inline struct reset_control *
of_reset_control_array_get_shared(struct device_node *node)
{
return of_reset_control_array_get(node, true, false);
return of_reset_control_array_get(node, true, false, true);
}
static inline struct reset_control *
of_reset_control_array_get_optional_exclusive(struct device_node *node)
{
return of_reset_control_array_get(node, false, true);
return of_reset_control_array_get(node, false, true, true);
}
static inline struct reset_control *
of_reset_control_array_get_optional_shared(struct device_node *node)
{
return of_reset_control_array_get(node, true, true);
return of_reset_control_array_get(node, true, true, true);
}
#endif