Commit f31d5c24 authored by Thierry Reding's avatar Thierry Reding Committed by Philipp Zabel
Browse files

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: default avatarThierry Reding <treding@nvidia.com>
Acked-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent c84b0326

drivers/reset/core.c

+6 −3
Original line number Diff line number Diff line
@@ -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;

drivers/usb/dwc3/dwc3-of-simple.c

+2 −1
Original line number Diff line number Diff line
@@ -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);

include/linux/reset.h

+8 −6
Original line number Diff line number Diff line
@@ -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

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