@@ -203,12 +203,26 @@ Description:
both edges:
Any state transition.
+What: /sys/bus/counter/devices/counterX/countY/ceiling_component_id
+What: /sys/bus/counter/devices/counterX/countY/floor_component_id
+What: /sys/bus/counter/devices/counterX/countY/count_mode_component_id
+What: /sys/bus/counter/devices/counterX/countY/direction_component_id
+What: /sys/bus/counter/devices/counterX/countY/enable_component_id
+What: /sys/bus/counter/devices/counterX/countY/error_noise_component_id
+What: /sys/bus/counter/devices/counterX/countY/prescaler_component_id
+What: /sys/bus/counter/devices/counterX/countY/preset_component_id
+What: /sys/bus/counter/devices/counterX/countY/preset_enable_component_id
What: /sys/bus/counter/devices/counterX/countY/signalZ_action_component_id
+What: /sys/bus/counter/devices/counterX/signalY/cable_fault_component_id
+What: /sys/bus/counter/devices/counterX/signalY/cable_fault_enable_component_id
+What: /sys/bus/counter/devices/counterX/signalY/filter_clock_prescaler_component_id
+What: /sys/bus/counter/devices/counterX/signalY/index_polarity_component_id
+What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_component_id
KernelVersion: 5.16
Contact: linux-iio@vger.kernel.org
Description:
Read-only attribute that indicates the component ID of the
- respective Synapse of Count Y for Signal Z.
+ respective extension or Synapse.
What: /sys/bus/counter/devices/counterX/countY/spike_filter_ns
KernelVersion: 5.14
@@ -586,6 +586,7 @@ static int counter_signal_attrs_create(struct counter_device *const counter,
int err;
struct counter_comp comp;
size_t i;
+ struct counter_comp *ext;
/* Create main Signal attribute */
comp = counter_signal_comp;
@@ -601,8 +602,14 @@ static int counter_signal_attrs_create(struct counter_device *const counter,
/* Create an attribute for each extension */
for (i = 0; i < signal->num_ext; i++) {
- err = counter_attr_create(dev, cattr_group, signal->ext + i,
- scope, signal);
+ ext = &signal->ext[i];
+
+ err = counter_attr_create(dev, cattr_group, ext, scope, signal);
+ if (err < 0)
+ return err;
+
+ err = counter_comp_id_attr_create(dev, cattr_group, ext->name,
+ i);
if (err < 0)
return err;
}
@@ -693,6 +700,7 @@ static int counter_count_attrs_create(struct counter_device *const counter,
int err;
struct counter_comp comp;
size_t i;
+ struct counter_comp *ext;
/* Create main Count attribute */
comp = counter_count_comp;
@@ -717,8 +725,14 @@ static int counter_count_attrs_create(struct counter_device *const counter,
/* Create an attribute for each extension */
for (i = 0; i < count->num_ext; i++) {
- err = counter_attr_create(dev, cattr_group, count->ext + i,
- scope, count);
+ ext = &count->ext[i];
+
+ err = counter_attr_create(dev, cattr_group, ext, scope, count);
+ if (err < 0)
+ return err;
+
+ err = counter_comp_id_attr_create(dev, cattr_group, ext->name,
+ i);
if (err < 0)
return err;
}
@@ -782,6 +796,7 @@ static int counter_sysfs_attr_add(struct counter_device *const counter,
struct device *const dev = &counter->dev;
int err;
size_t i;
+ struct counter_comp *ext;
/* Add Signals sysfs attributes */
err = counter_sysfs_signals_add(counter, cattr_group);
@@ -814,8 +829,14 @@ static int counter_sysfs_attr_add(struct counter_device *const counter,
/* Create an attribute for each extension */
for (i = 0; i < counter->num_ext; i++) {
- err = counter_attr_create(dev, cattr_group, counter->ext + i,
- scope, NULL);
+ ext = &counter->ext[i];
+
+ err = counter_attr_create(dev, cattr_group, ext, scope, NULL);
+ if (err < 0)
+ return err;
+
+ err = counter_comp_id_attr_create(dev, cattr_group, ext->name,
+ i);
if (err < 0)
return err;
}
The Generic Counter chrdev interface expects users to supply component IDs in order to select extensions for requests. In order for users to know what component ID belongs to which extension this information must be exposed. The *_component_id attribute provides a way for users to discover what component ID belongs to which respective extension. Cc: David Lechner <david@lechnology.com> Cc: Gwendal Grignou <gwendal@chromium.org> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> --- Documentation/ABI/testing/sysfs-bus-counter | 16 +++++++++- drivers/counter/counter-sysfs.c | 33 +++++++++++++++++---- 2 files changed, 42 insertions(+), 7 deletions(-)