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HID: wacom: generic: add support for touchring 

Add support for the touchring to the generic code path in support of the second
generation Intuos Pro.

We also add checks for usage->type to ensure that we handle the usage before we
report it, or change the inrange_state based on it.

Signed-off-by: Aaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Aaron Armstrong Skomra 2017-01-25 12:08:39 -08:00 committed by Jiri Kosina
parent 65ef4c1e98
commit 60a2218698
1 changed files with 18 additions and 1 deletions
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19
drivers/hid/wacom_wac.c
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@ -1733,6 +1733,10 @@ static void wacom_wac_pad_usage_mapping(struct hid_device *hdev,
wacom_map_usage(input, usage, field, EV_ABS, ABS_WHEEL, 0);
features->device_type |= WACOM_DEVICETYPE_PAD;
break;
case WACOM_HID_WD_TOUCHRINGSTATUS:
wacom_map_usage(input, usage, field, EV_ABS, ABS_WHEEL, 0);
features->device_type |= WACOM_DEVICETYPE_PAD;
break;
}
switch (equivalent_usage & 0xfffffff0) {
@ -1775,12 +1779,22 @@ static void wacom_wac_pad_event(struct hid_device *hdev, struct hid_field *field
struct input_dev *input = wacom_wac->pad_input;
unsigned equivalent_usage = wacom_equivalent_usage(usage->hid);
/*
* Avoid reporting this event and setting inrange_state if this usage
* hasn't been mapped.
*/
if (!usage->type)
return;
if (wacom_equivalent_usage(field->physical) == HID_DG_TABLETFUNCTIONKEY) {
wacom_wac->hid_data.inrange_state |= value;
if (usage->hid != WACOM_HID_WD_TOUCHRING)
wacom_wac->hid_data.inrange_state |= value;
}
switch (equivalent_usage) {
case WACOM_HID_WD_TOUCHRINGSTATUS:
if (!value)
input_event(input, usage->type, usage->code, 0);
break;
default:
@ -2288,6 +2302,9 @@ void wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
if (wacom->wacom_wac.features.type != HID_GENERIC)
return;
if (value > field->logical_maximum || value < field->logical_minimum)
return;
if (WACOM_PAD_FIELD(field)) {
wacom_wac_pad_battery_event(hdev, field, usage, value);
if (wacom->wacom_wac.pad_input)