On Fri, 12 Feb 2021 21:13:43 +0900 William Breathitt Gray <vilhelm.g...@gmail.com> wrote:
> The Generic Counter chrdev interface expects users to supply extension > IDs in order to select extensions for requests. In order for users to > know what extension ID belongs to which extension this information must > be exposed. The extension*_name attribute provides a way for users to > discover what extension ID belongs to which extension by reading the > respective extension name for an extension ID. > > Cc: David Lechner <da...@lechnology.com> > Cc: Gwendal Grignou <gwen...@chromium.org> > Cc: Dan Carpenter <dan.carpen...@oracle.com> > Signed-off-by: William Breathitt Gray <vilhelm.g...@gmail.com> > --- > Documentation/ABI/testing/sysfs-bus-counter | 9 ++++ > drivers/counter/counter-sysfs.c | 51 +++++++++++++++++---- > 2 files changed, 50 insertions(+), 10 deletions(-) > > diff --git a/Documentation/ABI/testing/sysfs-bus-counter > b/Documentation/ABI/testing/sysfs-bus-counter > index 6353f0a2f8f8..847e96f19d19 100644 > --- a/Documentation/ABI/testing/sysfs-bus-counter > +++ b/Documentation/ABI/testing/sysfs-bus-counter > @@ -100,6 +100,15 @@ Description: > Read-only attribute that indicates whether excessive noise is > present at the channel Y counter inputs. > > +What: /sys/bus/counter/devices/counterX/countY/extensionZ_name > +What: /sys/bus/counter/devices/counterX/extensionZ_name > +What: > /sys/bus/counter/devices/counterX/signalY/extensionZ_name > +KernelVersion: 5.13 > +Contact: linux-...@vger.kernel.org > +Description: > + Read-only attribute that indicates the component name of > + Extension Z. Good to say what form this takes. > +
