[PATCH v1 0/2] coresight: Add support for device names

[PATCH v1 0/2] coresight: Add support for device names

[Tao Zhang]

This series add support for coresight device name. In this way,
nodes with specific names can be generated under sysfs, not just
names with prefixes and index numbers. The coresight device can
be quickly identified by the coresight names of sysfs nodes. This
also allows using same names for CoreSight devices across different
targets. This makes it easy to develop common scripts, which can
be run across targets. Meanwhile, the script can use the same
device name to control the same coresight device.

This series patches base on coresight-next repo
http://git.linaro.org/kernel/coresight.git/log/?h=next

Tao Zhang (2):
  coresight: Add support for device names
  dt-bindings: arm: add property for coresight component name

 Documentation/devicetree/bindings/arm/coresight.txt | 2 ++
 drivers/hwtracing/coresight/coresight-core.c        | 6 ++++++
 2 files changed, 8 insertions(+)

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v1 1/2] coresight: Add support for device names

[Tao Zhang]

Add support to read device names from device tree entries. Before
the previous process of allocating coresight device name, try to
read the coresight device name from device tree entries. If it is
read, the device name will be returned directly. If it is not read,
the original allocation name process will be followed.

Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org>
Signed-off-by: Tao Zhang <taozha@codeaurora.org>
---
 drivers/hwtracing/coresight/coresight-core.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index 4ba801d..b79c726 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -1640,6 +1640,12 @@ char *coresight_alloc_device_name(struct coresight_dev_list *dict,
 	int idx;
 	char *name = NULL;
 	struct fwnode_handle **list;
+	struct device_node *node = dev->of_node;
+
+	if (!node) {
+		if (!of_property_read_string(node, "coresight-name", &name))
+			return name;
+	}
 
 	mutex_lock(&coresight_mutex);
 
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v1 2/2] dt-bindings: arm: add property for coresight component name

[Tao Zhang]

Add property "coresight-name" for coresight component name. This
allows coresight driver to read device name from device entries.

Signed-off-by: Tao Zhang <taozha@codeaurora.org>
---
 Documentation/devicetree/bindings/arm/coresight.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt
index d711676..0e980ce 100644
--- a/Documentation/devicetree/bindings/arm/coresight.txt
+++ b/Documentation/devicetree/bindings/arm/coresight.txt
@@ -103,6 +103,8 @@ its hardware characteristcs.
 	  powers down the coresight component also powers down and loses its
 	  context. This property is currently only used for the ETM 4.x driver.
 
+	* coresight-name: the name of the coresight devices.
+
 * Optional properties for ETM/PTMs:
 
 	* arm,cp14: must be present if the system accesses ETM/PTM management
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project