powerpc/windfarm: Improve display of fan speeds in sysfs
Controls registered as RPM and PWM fans are now displayed
with the "RPM" or "%" suffix respectively to make it
clearer to the user what the value actually means since
the fan type isn't otherwise obvious.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/drivers/macintosh/windfarm_core.c b/drivers/macintosh/windfarm_core.c
index ce88979..ebafc25 100644
--- a/drivers/macintosh/windfarm_core.c
+++ b/drivers/macintosh/windfarm_core.c
@@ -164,13 +164,24 @@
struct device_attribute *attr, char *buf)
{
struct wf_control *ctrl = container_of(attr, struct wf_control, attr);
+ const char *typestr;
s32 val = 0;
int err;
err = ctrl->ops->get_value(ctrl, &val);
if (err < 0)
return err;
- return sprintf(buf, "%d\n", val);
+ switch(ctrl->type) {
+ case WF_CONTROL_RPM_FAN:
+ typestr = " RPM";
+ break;
+ case WF_CONTROL_PWM_FAN:
+ typestr = " %";
+ break;
+ default:
+ typestr = "";
+ }
+ return sprintf(buf, "%d%s\n", val, typestr);
}
/* This is really only for debugging... */