diff options
| author | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2015-03-06 19:14:42 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2015-03-07 00:54:01 +0300 |
| commit | 015fdaa9f8edd89a456b3331088e1b77ebdad9d0 (patch) | |
| tree | 021bb337d4a5a1225dfc3ae2815a13c9e0f14841 /drivers/hid/hid-multitouch.c | |
| parent | c4bbb39806cf4098d7a01a779b40171047004046 (diff) | |
| download | linux-015fdaa9f8edd89a456b3331088e1b77ebdad9d0.tar.xz | |
HID: multitouch: add support of clickpads
Touchpads that have only one button are called clickpads and should
be advertised as such by the kernel.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-multitouch.c')
| -rw-r--r-- | drivers/hid/hid-multitouch.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index f65e78b46999..ef06dc30b9b1 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -116,6 +116,7 @@ struct mt_device { __u8 touches_by_report; /* how many touches are present in one report: * 1 means we should use a serial protocol * > 1 means hybrid (multitouch) protocol */ + __u8 buttons_count; /* number of physical buttons per touchpad */ bool serial_maybe; /* need to check for serial protocol */ bool curvalid; /* is the current contact valid? */ unsigned mt_flags; /* flags to pass to input-mt */ @@ -379,6 +380,10 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, td->inputmode_value = MT_INPUTMODE_TOUCHPAD; } + /* count the buttons on touchpads */ + if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) + td->buttons_count++; + if (usage->usage_index) prev_usage = &field->usage[usage->usage_index - 1]; @@ -728,6 +733,10 @@ static void mt_touch_input_configured(struct hid_device *hdev, if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP) td->mt_flags |= INPUT_MT_DROP_UNUSED; + /* check for clickpads */ + if ((td->mt_flags & INPUT_MT_POINTER) && (td->buttons_count == 1)) + __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); + input_mt_init_slots(input, td->maxcontacts, td->mt_flags); td->mt_flags = 0; |