On Fri, Jul 10, 2020 at 04:48:39PM +0800, Qiwu Huang wrote: > From: Qiwu Huang <huangq...@xiaomi.com> > > reports wireless signal strength. > The value show degree of coupling between tx and rx. > > Signed-off-by: Qiwu Huang <huangq...@xiaomi.com> > --- > Documentation/ABI/testing/sysfs-class-power | 9 ++++++++- > drivers/power/supply/power_supply_sysfs.c | 1 + > include/linux/power_supply.h | 1 + > 3 files changed, 10 insertions(+), 1 deletion(-) > > diff --git a/Documentation/ABI/testing/sysfs-class-power > b/Documentation/ABI/testing/sysfs-class-power > index 2099cf194a89..1f42aa0c071e 100644 > --- a/Documentation/ABI/testing/sysfs-class-power > +++ b/Documentation/ABI/testing/sysfs-class-power > @@ -730,4 +730,11 @@ Description: > > Access: Read-Only > Valid values: "ADAPTER_NONE", "ADAPTER_SDP", "ADAPTER_DCP", > "ADAPTER_CDP", > - "ADAPTER_QC2", "ADAPTER_QC3", "ADAPTER_PD" or other private > adapter. > \ No newline at end of file > + "ADAPTER_QC2", "ADAPTER_QC3", "ADAPTER_PD" or other private > adapter. > + > +What: /sys/class/power_supply/<supply_name>/signal_strength > +Date: Jul 2020 > +Contact: Fei Jiang <jiangf...@xiaomi.com> > +Description: > + Reports wireless signal strength. > + The value show degree of coupling.
What units are this in? The "value" means what? thanks, greg k-h
