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HID: wacom: make sure touch arbitration is applied consistently

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stylus_in_proximity is used to make sure no touch event is sent while pen is in
proximity. touch_down is used to make sure a touch up event is sent when pen
comes into proximity while touch is down.

Two touch routines didn't store touch_down. One touch routine forgot to check
stylus_in_proximity before sending touch events. This patch fixes those issues.

Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Ping Cheng 2015-01-28 09:42:59 -08:00 committed by Jiri Kosina
parent 33e5df0e0e
commit 9b61aa864a
1 changed files with 4 additions and 2 deletions
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6
drivers/hid/wacom_wac.c
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@ -1042,7 +1042,7 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom)
for (i = 0; i < contacts_to_send; i++) {
int offset = (WACOM_BYTES_PER_24HDT_PACKET * i) + 1;
bool touch = data[offset] & 0x1 && !wacom->shared->stylus_in_proximity;
bool touch = (data[offset] & 0x1) && !wacom->shared->stylus_in_proximity;
int slot = input_mt_get_slot_by_key(input, data[offset + 1]);
if (slot < 0)
@ -1072,6 +1072,7 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom)
if (wacom->num_contacts_left <= 0)
wacom->num_contacts_left = 0;
wacom->shared->touch_down = (wacom->num_contacts_left > 0);
return 1;
}
@ -1100,7 +1101,7 @@ static int wacom_mt_touch(struct wacom_wac *wacom)
for (i = 0; i < contacts_to_send; i++) {
int offset = (WACOM_BYTES_PER_MT_PACKET + x_offset) * i + 3;
bool touch = data[offset] & 0x1;
bool touch = (data[offset] & 0x1) && !wacom->shared->stylus_in_proximity;
int id = get_unaligned_le16(&data[offset + 1]);
int slot = input_mt_get_slot_by_key(input, id);
@ -1122,6 +1123,7 @@ static int wacom_mt_touch(struct wacom_wac *wacom)
if (wacom->num_contacts_left < 0)
wacom->num_contacts_left = 0;
wacom->shared->touch_down = (wacom->num_contacts_left > 0);
return 1;
}