From: Ping Cheng Date: Fri, 20 Mar 2015 21:57:21 +0000 (-0700) Subject: HID: wacom: use wacom_wac_finger_count_touches to set touch_down X-Git-Tag: firefly_0821_release~176^2~1996^2~1^11~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7d059ed01ca18d20e0a94ef785ee81a45c19d78c;p=firefly-linux-kernel-4.4.55.git HID: wacom: use wacom_wac_finger_count_touches to set touch_down Counting number of touching fingers by wacom_wac_finger_count_touches so we don't have to count them inside individual routines. Signed-off-by: Ping Cheng Reviewed-by: Jason Gerecke Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 221443710aed..59b8e27909d4 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -1065,6 +1065,28 @@ static int wacom_intuos_bt_irq(struct wacom_wac *wacom, size_t len) return 0; } +static int wacom_wac_finger_count_touches(struct wacom_wac *wacom) +{ + struct input_dev *input = wacom->input; + unsigned touch_max = wacom->features.touch_max; + int count = 0; + int i; + + /* non-HID_GENERIC single touch input doesn't call this routine */ + if ((touch_max == 1) && (wacom->features.type == HID_GENERIC)) + return wacom->hid_data.tipswitch && + !wacom->shared->stylus_in_proximity; + + for (i = 0; i < input->mt->num_slots; i++) { + struct input_mt_slot *ps = &input->mt->slots[i]; + int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); + if (id >= 0) + count++; + } + + return count; +} + static int wacom_24hdt_irq(struct wacom_wac *wacom) { struct input_dev *input = wacom->input; @@ -1075,7 +1097,6 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom) int num_contacts_left = 4; /* maximum contacts per packet */ int byte_per_packet = WACOM_BYTES_PER_24HDT_PACKET; int y_offset = 2; - static int contact_with_no_pen_down_count = 0; if (wacom->features.type == WACOM_27QHDT) { current_num_contacts = data[63]; @@ -1088,10 +1109,8 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom) * First packet resets the counter since only the first * packet in series will have non-zero current_num_contacts. */ - if (current_num_contacts) { + if (current_num_contacts) wacom->num_contacts_left = current_num_contacts; - contact_with_no_pen_down_count = 0; - } contacts_to_send = min(num_contacts_left, wacom->num_contacts_left); @@ -1124,7 +1143,6 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom) input_report_abs(input, ABS_MT_WIDTH_MINOR, min(w, h)); input_report_abs(input, ABS_MT_ORIENTATION, w > h); } - contact_with_no_pen_down_count++; } } input_mt_sync_frame(input); @@ -1132,7 +1150,7 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom) wacom->num_contacts_left -= contacts_to_send; if (wacom->num_contacts_left <= 0) { wacom->num_contacts_left = 0; - wacom->shared->touch_down = (contact_with_no_pen_down_count > 0); + wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom); } return 1; } @@ -1145,7 +1163,6 @@ static int wacom_mt_touch(struct wacom_wac *wacom) int current_num_contacts = data[2]; int contacts_to_send = 0; int x_offset = 0; - static int contact_with_no_pen_down_count = 0; /* MTTPC does not support Height and Width */ if (wacom->features.type == MTTPC || wacom->features.type == MTTPC_B) @@ -1155,10 +1172,8 @@ static int wacom_mt_touch(struct wacom_wac *wacom) * First packet resets the counter since only the first * packet in series will have non-zero current_num_contacts. */ - if (current_num_contacts) { + if (current_num_contacts) wacom->num_contacts_left = current_num_contacts; - contact_with_no_pen_down_count = 0; - } /* There are at most 5 contacts per packet */ contacts_to_send = min(5, wacom->num_contacts_left); @@ -1179,7 +1194,6 @@ static int wacom_mt_touch(struct wacom_wac *wacom) int y = get_unaligned_le16(&data[offset + x_offset + 9]); input_report_abs(input, ABS_MT_POSITION_X, x); input_report_abs(input, ABS_MT_POSITION_Y, y); - contact_with_no_pen_down_count++; } } input_mt_sync_frame(input); @@ -1187,7 +1201,7 @@ static int wacom_mt_touch(struct wacom_wac *wacom) wacom->num_contacts_left -= contacts_to_send; if (wacom->num_contacts_left <= 0) { wacom->num_contacts_left = 0; - wacom->shared->touch_down = (contact_with_no_pen_down_count > 0); + wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom); } return 1; } @@ -1196,7 +1210,6 @@ static int wacom_tpc_mt_touch(struct wacom_wac *wacom) { struct input_dev *input = wacom->input; unsigned char *data = wacom->data; - int contact_with_no_pen_down_count = 0; int i; for (i = 0; i < 2; i++) { @@ -1211,13 +1224,12 @@ static int wacom_tpc_mt_touch(struct wacom_wac *wacom) input_report_abs(input, ABS_MT_POSITION_X, x); input_report_abs(input, ABS_MT_POSITION_Y, y); - contact_with_no_pen_down_count++; } } input_mt_sync_frame(input); /* keep touch state for pen event */ - wacom->shared->touch_down = (contact_with_no_pen_down_count > 0); + wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom); return 1; } @@ -1545,29 +1557,6 @@ static int wacom_wac_finger_event(struct hid_device *hdev, return 0; } -static int wacom_wac_finger_count_touches(struct hid_device *hdev) -{ - 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; - int count = 0; - int i; - - if (touch_max == 1) - return wacom_wac->hid_data.tipswitch && - !wacom_wac->shared->stylus_in_proximity; - - for (i = 0; i < input->mt->num_slots; i++) { - struct input_mt_slot *ps = &input->mt->slots[i]; - int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID); - if (id >= 0) - count++; - } - - return count; -} - static void wacom_wac_finger_report(struct hid_device *hdev, struct hid_report *report) { @@ -1582,7 +1571,7 @@ static void wacom_wac_finger_report(struct hid_device *hdev, input_sync(input); /* keep touch state for pen event */ - wacom_wac->shared->touch_down = wacom_wac_finger_count_touches(hdev); + wacom_wac->shared->touch_down = wacom_wac_finger_count_touches(wacom_wac); } void wacom_wac_usage_mapping(struct hid_device *hdev, @@ -1642,7 +1631,6 @@ static int wacom_bpt_touch(struct wacom_wac *wacom) struct input_dev *pad_input = wacom->pad_input; unsigned char *data = wacom->data; int i; - int contact_with_no_pen_down_count = 0; if (data[0] != 0x02) return 0; @@ -1670,7 +1658,6 @@ static int wacom_bpt_touch(struct wacom_wac *wacom) } input_report_abs(input, ABS_MT_POSITION_X, x); input_report_abs(input, ABS_MT_POSITION_Y, y); - contact_with_no_pen_down_count++; } } @@ -1680,12 +1667,12 @@ static int wacom_bpt_touch(struct wacom_wac *wacom) input_report_key(pad_input, BTN_FORWARD, (data[1] & 0x04) != 0); input_report_key(pad_input, BTN_BACK, (data[1] & 0x02) != 0); input_report_key(pad_input, BTN_RIGHT, (data[1] & 0x01) != 0); - wacom->shared->touch_down = (contact_with_no_pen_down_count > 0); + wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom); return 1; } -static int wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data, int last_touch_count) +static void wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data) { struct wacom_features *features = &wacom->features; struct input_dev *input = wacom->input; @@ -1693,7 +1680,7 @@ static int wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data, in int slot = input_mt_get_slot_by_key(input, data[0]); if (slot < 0) - return 0; + return; touch = touch && !wacom->shared->stylus_in_proximity; @@ -1725,9 +1712,7 @@ static int wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data, in input_report_abs(input, ABS_MT_POSITION_Y, y); input_report_abs(input, ABS_MT_TOUCH_MAJOR, width); input_report_abs(input, ABS_MT_TOUCH_MINOR, height); - last_touch_count++; } - return last_touch_count; } static void wacom_bpt3_button_msg(struct wacom_wac *wacom, unsigned char *data) @@ -1752,7 +1737,6 @@ static int wacom_bpt3_touch(struct wacom_wac *wacom) unsigned char *data = wacom->data; int count = data[1] & 0x07; int i; - int contact_with_no_pen_down_count = 0; if (data[0] != 0x02) return 0; @@ -1763,15 +1747,13 @@ static int wacom_bpt3_touch(struct wacom_wac *wacom) int msg_id = data[offset]; if (msg_id >= 2 && msg_id <= 17) - contact_with_no_pen_down_count = - wacom_bpt3_touch_msg(wacom, data + offset, - contact_with_no_pen_down_count); + wacom_bpt3_touch_msg(wacom, data + offset); else if (msg_id == 128) wacom_bpt3_button_msg(wacom, data + offset); } input_mt_sync_frame(input); - wacom->shared->touch_down = (contact_with_no_pen_down_count > 0); + wacom->shared->touch_down = wacom_wac_finger_count_touches(wacom); return 1; }