diff options
| author | Mike Leach <mike.leach@linaro.org> | 2020-03-20 10:53:00 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-21 11:32:20 +0100 |
| commit | 3c5597e398124e6d55f8dcc4355c09b5b3f6e9bb (patch) | |
| tree | c9d50d4533f32ae4aebae97a7bfc49a80b6a0020 /drivers/hwtracing/coresight/coresight-cti.c | |
| parent | 177af8285b59a3887e4430d2c782598083cddcd7 (diff) | |
coresight: cti: Add connection information to sysfs
Dynamically adds sysfs attributes for all connections defined in the CTI.
Each connection has a triggers<N> sub-directory with name, in_signals,
in_types, out_signals and out_types as read-only parameters in the
directory. in_ or out_ parameters may be omitted if there are no in or
out signals for the connection.
Additionally each device has a nr_cons in the connections sub-directory.
This allows clients to explore the connection and trigger signal details
without needing to refer to device tree or specification of the device.
Standardised type information is provided for certain common functions -
e.g. snk_full for a trigger from a sink indicating full. Otherwise type
defaults to genio.
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20200320165303.13681-10-mathieu.poirier@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-cti.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-cti.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-cti.c b/drivers/hwtracing/coresight/coresight-cti.c index 2fc68760efbe..aa6e0249bd70 100644 --- a/drivers/hwtracing/coresight/coresight-cti.c +++ b/drivers/hwtracing/coresight/coresight-cti.c @@ -673,12 +673,20 @@ static int cti_probe(struct amba_device *adev, const struct amba_id *id) goto err_out; } + /* create dynamic attributes for connections */ + ret = cti_create_cons_sysfs(dev, drvdata); + if (ret) { + dev_err(dev, "%s: create dynamic sysfs entries failed\n", + cti_desc.name); + goto err_out; + } + /* set up coresight component description */ cti_desc.pdata = pdata; cti_desc.type = CORESIGHT_DEV_TYPE_ECT; cti_desc.subtype.ect_subtype = CORESIGHT_DEV_SUBTYPE_ECT_CTI; cti_desc.ops = &cti_ops; - cti_desc.groups = coresight_cti_groups; + cti_desc.groups = drvdata->ctidev.con_groups; cti_desc.dev = dev; drvdata->csdev = coresight_register(&cti_desc); if (IS_ERR(drvdata->csdev)) { |