| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Tue, 23 Sep 2014 12:08:09 -0400
From: Benjamin Tissoires <benjamin.tissoires@...hat.com>
To: Jiri Kosina <jkosina@...e.cz>, Ping Cheng <pinglinux@...il.com>,
killertofu@...il.com
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] HID: wacom: implement the finger part of the HID generic handling
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
---
drivers/hid/wacom_sys.c | 39 ++++++++++++++--
drivers/hid/wacom_wac.c | 120 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/hid/wacom_wac.h | 8 ++++
3 files changed, 164 insertions(+), 3 deletions(-)
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index dd288b2..8593047 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -109,6 +109,7 @@ static void wacom_feature_mapping(struct hid_device *hdev,
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct wacom_features *features = &wacom->wacom_wac.features;
+ struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
u8 *data;
int ret;
@@ -128,6 +129,16 @@ static void wacom_feature_mapping(struct hid_device *hdev,
kfree(data);
}
break;
+ case HID_DG_INPUTMODE:
+ /* Ignore if value index is out of bounds. */
+ if (usage->usage_index >= field->report_count) {
+ dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
+ break;
+ }
+
+ hid_data->inputmode = field->report->id;
+ hid_data->inputmode_index = usage->usage_index;
+ break;
}
}
@@ -255,6 +266,25 @@ static void wacom_parse_hid(struct hid_device *hdev,
}
}
+static int wacom_hid_set_device_mode(struct hid_device *hdev)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
+ struct hid_report *r;
+ struct hid_report_enum *re;
+
+ if (hid_data->inputmode < 0)
+ return 0;
+
+ re = &(hdev->report_enum[HID_FEATURE_REPORT]);
+ r = re->report_id_hash[hid_data->inputmode];
+ if (r) {
+ r->field[0]->value[hid_data->inputmode_index] = 2;
+ hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
+ }
+ return 0;
+}
+
static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
int length, int mode)
{
@@ -347,6 +377,9 @@ static int wacom_query_tablet_data(struct hid_device *hdev,
if (hdev->bus == BUS_BLUETOOTH)
return wacom_bt_query_tablet_data(hdev, 1, features);
+ if (features->type == HID_GENERIC)
+ return wacom_hid_set_device_mode(hdev);
+
if (features->device_type == BTN_TOOL_FINGER) {
if (features->type > TABLETPC) {
/* MT Tablet PC touch */
@@ -1451,9 +1484,6 @@ static int wacom_probe(struct hid_device *hdev,
error);
}
- /* Note that if query fails it is not a hard failure */
- wacom_query_tablet_data(hdev, features);
-
if (features->type == HID_GENERIC)
connect_mask |= HID_CONNECT_DRIVER;
@@ -1464,6 +1494,9 @@ static int wacom_probe(struct hid_device *hdev,
goto fail_hw_start;
}
+ /* Note that if query fails it is not a hard failure */
+ wacom_query_tablet_data(hdev, features);
+
if (features->quirks & WACOM_QUIRK_MONITOR)
error = hid_hw_open(hdev);
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index e77d46d..586b240 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -1372,6 +1372,117 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
}
}
+static void wacom_wac_finger_usage_mapping(struct hid_device *hdev,
+ struct hid_field *field, struct hid_usage *usage)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ struct wacom_wac *wacom_wac = &wacom->wacom_wac;
+ struct input_dev *input = wacom_wac->input;
+ unsigned touch_max = wacom_wac->features.touch_max;
+
+ switch (usage->hid) {
+ case HID_GD_X:
+ if (touch_max == 1)
+ wacom_map_usage(wacom, usage, field, EV_ABS, ABS_X, 4);
+ else
+ wacom_map_usage(wacom, usage, field, EV_ABS,
+ ABS_MT_POSITION_X, 4);
+ break;
+ case HID_GD_Y:
+ if (touch_max == 1)
+ wacom_map_usage(wacom, usage, field, EV_ABS, ABS_Y, 4);
+ else
+ wacom_map_usage(wacom, usage, field, EV_ABS,
+ ABS_MT_POSITION_Y, 4);
+ break;
+ case HID_DG_CONTACTID:
+ input_mt_init_slots(input, wacom_wac->features.touch_max,
+ INPUT_MT_DIRECT);
+ break;
+ case HID_DG_INRANGE:
+ break;
+ case HID_DG_INVERT:
+ break;
+ case HID_DG_TIPSWITCH:
+ wacom_map_usage(wacom, usage, field, EV_KEY, BTN_TOUCH, 0);
+ break;
+ }
+}
+
+static int wacom_wac_finger_event(struct hid_device *hdev,
+ struct hid_field *field, struct hid_usage *usage, __s32 value)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ struct wacom_wac *wacom_wac = &wacom->wacom_wac;
+
+ switch (usage->hid) {
+ case HID_GD_X:
+ wacom_wac->hid_data.x = value;
+ break;
+ case HID_GD_Y:
+ wacom_wac->hid_data.y = value;
+ break;
+ case HID_DG_CONTACTID:
+ wacom_wac->hid_data.id = value;
+ break;
+ case HID_DG_TIPSWITCH:
+ wacom_wac->hid_data.tipswitch = value;
+ break;
+ }
+
+
+ return 0;
+}
+
+static void wacom_wac_finger_mt_report(struct wacom_wac *wacom_wac,
+ struct input_dev *input, bool touch)
+{
+ int slot;
+ struct hid_data *hid_data = &wacom_wac->hid_data;
+
+ slot = input_mt_get_slot_by_key(input, hid_data->id);
+
+ input_mt_slot(input, slot);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, touch);
+ if (touch) {
+ input_report_abs(input, ABS_MT_POSITION_X, hid_data->x);
+ input_report_abs(input, ABS_MT_POSITION_Y, hid_data->y);
+ }
+ input_mt_sync_frame(input);
+}
+
+static void wacom_wac_finger_single_touch_report(struct wacom_wac *wacom_wac,
+ struct input_dev *input, bool touch)
+{
+ struct hid_data *hid_data = &wacom_wac->hid_data;
+
+ if (touch) {
+ input_report_abs(input, ABS_X, hid_data->x);
+ input_report_abs(input, ABS_Y, hid_data->y);
+ }
+ input_report_key(input, BTN_TOUCH, touch);
+}
+
+static void wacom_wac_finger_report(struct hid_device *hdev,
+ struct hid_report *report)
+{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ struct wacom_wac *wacom_wac = &wacom->wacom_wac;
+ struct input_dev *input = wacom_wac->input;
+ bool touch = wacom_wac->hid_data.tipswitch &&
+ !wacom_wac->shared->stylus_in_proximity;
+ unsigned touch_max = wacom_wac->features.touch_max;
+
+ if (touch_max > 1)
+ wacom_wac_finger_mt_report(wacom_wac, input, touch);
+ else
+ wacom_wac_finger_single_touch_report(wacom_wac, input, touch);
+ input_sync(input);
+
+ /* keep touch state for pen event */
+ wacom_wac->shared->touch_down = touch;
+}
+
#define WACOM_PEN_FIELD(f) (((f)->logical == HID_DG_STYLUS) || \
((f)->physical == HID_DG_STYLUS))
#define WACOM_FINGER_FIELD(f) (((f)->logical == HID_DG_FINGER) || \
@@ -1389,6 +1500,9 @@ void wacom_wac_usage_mapping(struct hid_device *hdev,
if (WACOM_PEN_FIELD(field))
return wacom_wac_pen_usage_mapping(hdev, field, usage);
+
+ if (WACOM_FINGER_FIELD(field))
+ return wacom_wac_finger_usage_mapping(hdev, field, usage);
}
int wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
@@ -1402,6 +1516,9 @@ int wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
if (WACOM_PEN_FIELD(field))
return wacom_wac_pen_event(hdev, field, usage, value);
+ if (WACOM_FINGER_FIELD(field))
+ return wacom_wac_finger_event(hdev, field, usage, value);
+
return 0;
}
@@ -1416,6 +1533,9 @@ void wacom_wac_report(struct hid_device *hdev, struct hid_report *report)
if (WACOM_PEN_FIELD(field))
return wacom_wac_pen_report(hdev, report);
+
+ if (WACOM_FINGER_FIELD(field))
+ return wacom_wac_finger_report(hdev, report);
}
static int wacom_bpt_touch(struct wacom_wac *wacom)
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index f472eac..0f0b85e 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -156,9 +156,17 @@ struct wacom_shared {
};
struct hid_data {
+ __s16 inputmode; /* InputMode HID feature, -1 if non-existent */
+ __s16 inputmode_index; /* InputMode HID feature index in the report */
bool inrange_state;
bool invert_state;
bool tipswitch;
+ int x;
+ int y;
+ int pressure;
+ int width;
+ int height;
+ int id;
};
struct wacom_wac {
--
2.1.0
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists