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Commit 731f76b0 authored by Tingwei Zhang's avatar Tingwei Zhang
Browse files

coresight: add support for device names 



Add support to read device names from device tree entries.
This allows using same names for CoreSight devices across different
targets.

Change-Id: I55e7437c9339b58d27377d09c7a1d0ec1ebff463
Signed-off-by: default avatarTingwei Zhang <tingwei@codeaurora.org>
parent 844cb3e3

drivers/hwtracing/coresight/coresight.c

+7 −3
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (c) 2012, The Linux Foundation. All rights reserved.

 * Copyright (c) 2012, 2019 The Linux Foundation. All rights reserved.

 */



#include <linux/kernel.h>
@@ -1317,12 +1317,16 @@ static inline int coresight_search_device_idx(struct coresight_dev_list *dict, 
 * duplicate indices for the same device (e.g, if we defer probing of

 * a device due to dependencies), in case the index is requested again.

 */

char *coresight_alloc_device_name(struct coresight_dev_list *dict,

const char *coresight_alloc_device_name(struct coresight_dev_list *dict,

				  struct device *dev)

{

	int idx;

	char *name = NULL;

	const char *name = NULL;

	struct fwnode_handle **list;

	struct device_node *node = dev->of_node;



	if (!of_property_read_string(node, "coresight-name", &name))

		return name;



	mutex_lock(&coresight_mutex);

include/linux/coresight.h

+2 −2
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (c) 2012, The Linux Foundation. All rights reserved.

 * Copyright (c) 2012, 2019 The Linux Foundation. All rights reserved.

 */



#ifndef _LINUX_CORESIGHT_H
@@ -283,7 +283,7 @@ extern int coresight_claim_device_unlocked(void __iomem *base); 


extern void coresight_disclaim_device(void __iomem *base);

extern void coresight_disclaim_device_unlocked(void __iomem *base);

extern char *coresight_alloc_device_name(struct coresight_dev_list *devs,

extern const char *coresight_alloc_device_name(struct coresight_dev_list *devs,

					 struct device *dev);

#else

static inline struct coresight_device *