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HID: rmi: Support touchpads with external buttons 

The external buttons on HID touchpads are connected as pass through devices and
button events are not reported in the rmi registers. As a result on these
devices we need to allow the HID generic desktop button events to be processed
by hid-input. Unfortunately, there is no way to query the touchpad to determine
that it has pass through buttons so the RMI_DEVICE_HAS_PHYS_BUTTONS should be
set manually when adding the device to rmi_id[].

Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Andrew Duggan 2015-01-08 14:51:34 -08:00 committed by Jiri Kosina
parent b8aed6ea39
commit 79364d87af
1 changed files with 19 additions and 1 deletions
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20
drivers/hid/hid-rmi.c
View File

@ -35,6 +35,7 @@
/* device flags */
#define RMI_DEVICE BIT(0)
#define RMI_DEVICE_HAS_PHYS_BUTTONS BIT(1)
enum rmi_mode_type {
RMI_MODE_OFF = 0,
@ -472,6 +473,15 @@ static int rmi_event(struct hid_device *hdev, struct hid_field *field,
if ((data->device_flags & RMI_DEVICE) &&
(field->application == HID_GD_POINTER ||
field->application == HID_GD_MOUSE)) {
if (data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) {
if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
return 0;
if ((usage->hid == HID_GD_X || usage->hid == HID_GD_Y)
&& !value)
return 1;
}
rmi_schedule_reset(hdev);
return 1;
}
@ -942,8 +952,13 @@ static int rmi_input_mapping(struct hid_device *hdev,
* we want to make HID ignore the advertised HID collection
* for RMI deivces
*/
if (data->device_flags & RMI_DEVICE)
if (data->device_flags & RMI_DEVICE) {
if ((data->device_flags & RMI_DEVICE_HAS_PHYS_BUTTONS) &&
((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON))
return 0;
return -1;
}
return 0;
}
@ -991,6 +1006,9 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id)
return ret;
}
if (id->driver_data)
data->device_flags = id->driver_data;
/*
* Check for the RMI specific report ids. If they are misisng
* simply return and let the events be processed by hid-input