Messages in this thread | | | Subject | Re: [PATCH 4/6] hid: egalax: Report zero as minimum pressure | From | Chase Douglas <> | Date | Wed, 13 Oct 2010 13:54:15 -0400 |
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On Wed, 2010-10-13 at 15:58 +0200, Henrik Rydberg wrote: > The firmware reports a logical minimum of one, but in order for > userspace applications to correctly map all reported values to > non-zero pressure, the driver needs to report a logical minimum of > zero. Fixed with this patch. > > Tested-by: Philipp Merkel <mail@philmerk.de> > Signed-off-by: Henrik Rydberg <rydberg@euromail.se> > --- > drivers/hid/hid-egalax.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/drivers/hid/hid-egalax.c b/drivers/hid/hid-egalax.c > index 3b490a3..2aba897 100644 > --- a/drivers/hid/hid-egalax.c > +++ b/drivers/hid/hid-egalax.c > @@ -93,6 +93,7 @@ static int egalax_input_mapping(struct hid_device *hdev, struct hid_input *hi, > input_set_events_per_packet(input, MAX_EVENTS); > return 1; > case HID_DG_TIPPRESSURE: > + field->logical_minimum = 0; > hid_map_usage(hi, usage, bit, max, > EV_ABS, ABS_MT_PRESSURE); > set_abs(input, ABS_MT_PRESSURE, field, 0);
I'm a little unsure of whether the logical_minimum field should be modified by the driver or if the range of the evdev property should be the only change. I can't see anything in the hid code that looks like it would be adversely affected by this change though.
-- Chase
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