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HID: rmi: fix masks for x and w_x data 

The F11 data in the HID report contains four bits of data for w_x and the least significant bits
of x. Currently only the first three bits are being used which is resulting in small jumps in
the position data on the x axis and in the w_x data.

Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Andrew Duggan 2014-05-15 13:52:29 -07:00 committed by Jiri Kosina
parent b668fdce41
commit 876e7a8a11
1 changed files with 2 additions and 2 deletions
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4
drivers/hid/hid-rmi.c
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@ -277,9 +277,9 @@ static void rmi_f11_process_touch(struct rmi_data *hdata, int slot,
input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER,
finger_state == 0x01);
if (finger_state == 0x01) {
x = (touch_data[0] << 4) | (touch_data[2] & 0x07);
x = (touch_data[0] << 4) | (touch_data[2] & 0x0F);
y = (touch_data[1] << 4) | (touch_data[2] >> 4);
wx = touch_data[3] & 0x07;
wx = touch_data[3] & 0x0F;
wy = touch_data[3] >> 4;
wide = (wx > wy);
major = max(wx, wy);