From: Ping Cheng <pinglinux@gmail.com>
To: linux-input@vger.kernel.org
Cc: Ping Cheng <pinglinux@gmail.com>, Ping Cheng <pingc@wacom.com>
Subject: [PATCH 4/4 v2] input: wacom - add 0xE5 (MT device) support
Date: Wed, 4 Jan 2012 14:44:36 -0800 [thread overview]
Message-ID: <1325717076-6455-1-git-send-email-pinglinux@gmail.com> (raw)
And getting rid of duplicate code since X/Y will always be present.
Tested-by: Chris Bagwell <chris@cnpbagwell.com>
Reviewed-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Ping Cheng <pingc@wacom.com>
---
v2: updated with Chris' comments.
drivers/input/tablet/wacom_sys.c | 57 ++++++++++++------------
drivers/input/tablet/wacom_wac.c | 88 ++++++++++++++++++++++++++++++++++++-
drivers/input/tablet/wacom_wac.h | 8 +++
3 files changed, 122 insertions(+), 31 deletions(-)
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index f7fe091..cad0ee2 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -308,6 +308,10 @@ static int wacom_parse_hid(struct usb_interface *intf,
features->pktlen = WACOM_PKGLEN_TPC2FG;
features->touch_max = 2;
}
+
+ if (features->type == MTSCREEN)
+ features->pktlen = WACOM_PKGLEN_MTOUCH;
+
if (features->type == BAMBOO_PT) {
/* need to reset back */
features->pktlen = WACOM_PKGLEN_BBTOUCH;
@@ -342,18 +346,15 @@ static int wacom_parse_hid(struct usb_interface *intf,
case HID_USAGE_Y:
if (usage == WCM_DESKTOP) {
if (finger) {
- features->device_type = BTN_TOOL_FINGER;
- if (features->type == TABLETPC2FG) {
- /* need to reset back */
- features->pktlen = WACOM_PKGLEN_TPC2FG;
+ int type = features->type;
+
+ if (type == TABLETPC2FG || type == MTSCREEN) {
features->y_max =
get_unaligned_le16(&report[i + 3]);
features->y_phy =
get_unaligned_le16(&report[i + 6]);
i += 7;
- } else if (features->type == BAMBOO_PT) {
- /* need to reset back */
- features->pktlen = WACOM_PKGLEN_BBTOUCH;
+ } else if (type == BAMBOO_PT) {
features->y_phy =
get_unaligned_le16(&report[i + 3]);
features->y_max =
@@ -367,10 +368,6 @@ static int wacom_parse_hid(struct usb_interface *intf,
i += 4;
}
} else if (pen) {
- /* penabled only accepts exact bytes of data */
- if (features->type == TABLETPC2FG)
- features->pktlen = WACOM_PKGLEN_GRAPHIRE;
- features->device_type = BTN_TOOL_PEN;
features->y_max =
get_unaligned_le16(&report[i + 3]);
i += 4;
@@ -433,24 +430,28 @@ static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_feat
if (!rep_data)
return error;
- /* ask to report tablet data if it is MT Tablet PC or
- * not a Tablet PC */
- if (features->type == TABLETPC2FG) {
- do {
- rep_data[0] = 3;
- rep_data[1] = 4;
- rep_data[2] = 0;
- rep_data[3] = 0;
- report_id = 3;
- error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
+ /* ask to report Wacom data */
+ if (features->device_type == BTN_TOOL_FINGER) {
+ /* if it is an MT Tablet PC touch */
+ if ((features->type == TABLETPC2FG) ||
+ (features->type == MTSCREEN)) {
+ do {
+ rep_data[0] = 3;
+ rep_data[1] = 4;
+ rep_data[2] = 0;
+ rep_data[3] = 0;
+ report_id = 3;
+ error = wacom_set_report(intf,
+ WAC_HID_FEATURE_REPORT,
report_id, rep_data, 4, 1);
- if (error >= 0)
- error = wacom_get_report(intf,
+ if (error >= 0)
+ error = wacom_get_report(intf,
WAC_HID_FEATURE_REPORT,
report_id, rep_data, 4, 1);
- } while ((error < 0 || rep_data[1] != 4) && limit++ < WAC_MSG_RETRIES);
- } else if (features->type != TABLETPC &&
- features->device_type == BTN_TOOL_PEN) {
+ } while ((error < 0 || rep_data[1] != 4) &&
+ limit++ < WAC_MSG_RETRIES);
+ }
+ } else if (features->type != TABLETPC) { /* or not a Tablet PC pen */
do {
rep_data[0] = 2;
rep_data[1] = 2;
@@ -482,9 +483,9 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
features->pressure_fuzz = 0;
features->distance_fuzz = 0;
- /* only Tablet PCs and Bamboo P&T need to retrieve the info */
+ /* only devices that support touch need to retrieve the info */
if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) &&
- (features->type != BAMBOO_PT))
+ (features->type != BAMBOO_PT) && (features->type != MTSCREEN))
goto out;
if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 8dc185d..7fba286 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -729,6 +729,75 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
return 1;
}
+static int wacom_mt_touch(struct wacom_wac *wacom)
+{
+ struct wacom_features *features = &wacom->features;
+ struct input_dev *input = wacom->input;
+ char *data = wacom->data;
+ struct input_mt_slot *mt;
+ int i, id = -1, j = 0, k = 4;
+ int x = 0, y = 0;
+ int current_num_contacts = data[2];
+ int contacts_to_send = 0;
+ bool touch = false;
+
+ /* reset the counter by the first packet since only the first
+ * packet in series will have non-zero current_num_contacts
+ */
+ if (current_num_contacts) {
+ features->num_contacts = current_num_contacts;
+ features->num_contacts_left = current_num_contacts;
+ }
+
+ /* There are at most 5 contacts per packet */
+ contacts_to_send = min(5, (int)features->num_contacts_left);
+
+ for (i = 0; i < contacts_to_send; i++) {
+ id = le16_to_cpup((__le16 *)&data[k]);
+
+ /* is there an existing slot for this contact? */
+ for (j = 0; j < features->touch_max; j++) {
+ mt = &input->mt[j];
+ if (input_mt_get_value(mt, ABS_MT_TRACKING_ID) == id )
+ break;
+ }
+
+ /* no. then find an unused slot to fill */
+ if (j >= features->touch_max) {
+ for (j = 0; j < features->touch_max; j++) {
+ mt = &input->mt[j];
+ if (input_mt_get_value(mt, ABS_MT_TRACKING_ID) == -1 )
+ break;
+ }
+ }
+
+ touch = data[k - 1] & 0x1;
+ input_mt_slot(input, j);
+ if (touch) {
+ x = le16_to_cpup((__le16 *)&data[k + 6]);
+ y = le16_to_cpup((__le16 *)&data[k + 8]);
+
+ input_report_abs(input, ABS_MT_POSITION_X, x);
+ input_report_abs(input, ABS_MT_POSITION_Y, y);
+ } else
+ id = -1;
+
+ /* keep the id from firmware since we need
+ * it to process future events
+ */
+ input_report_abs(input, ABS_MT_TRACKING_ID, id);
+
+ k += WACOM_BYTES_PER_MT_PACKET;
+ }
+
+ input_mt_report_pointer_emulation(input, true);
+
+ features->num_contacts_left -= contacts_to_send;
+ if (features->num_contacts_left < 0)
+ features->num_contacts_left = 0;
+ return 1;
+}
+
static int wacom_tpc_mt_touch(struct wacom_wac *wacom)
{
struct input_dev *input = wacom->input;
@@ -767,6 +836,10 @@ static int wacom_tpc_single_touch(struct wacom_wac *wacom, size_t len)
bool prox;
int x = 0, y = 0;
+ if ((wacom->features.touch_max > 1) ||
+ (len > WACOM_PKGLEN_TPC2FG))
+ return 0;
+
if (!wacom->shared->stylus_in_proximity) {
if (len == WACOM_PKGLEN_TPC1FG) {
prox = data[0] & 0x01;
@@ -835,10 +908,10 @@ static int wacom_tpc_irq(struct wacom_wac *wacom, size_t len)
switch (len) {
case WACOM_PKGLEN_TPC1FG:
- return wacom_tpc_single_touch(wacom, len);
+ return wacom_tpc_single_touch(wacom, len);
case WACOM_PKGLEN_TPC2FG:
- return wacom_tpc_mt_touch(wacom);
+ return wacom_tpc_mt_touch(wacom);
default:
switch (data[0]) {
@@ -847,6 +920,9 @@ static int wacom_tpc_irq(struct wacom_wac *wacom, size_t len)
case WACOM_REPORT_TPCST:
return wacom_tpc_single_touch(wacom, len);
+ case WACOM_REPORT_TPCMT:
+ return wacom_mt_touch(wacom);
+
case WACOM_REPORT_PENABLED:
return wacom_tpc_pen(wacom);
}
@@ -1088,6 +1164,7 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
case TABLETPC:
case TABLETPC2FG:
+ case MTSCREEN:
sync = wacom_tpc_irq(wacom_wac, len);
break;
@@ -1156,7 +1233,7 @@ void wacom_setup_device_quirks(struct wacom_features *features)
/* these device have multiple inputs */
if (features->type == TABLETPC || features->type == TABLETPC2FG ||
- features->type == BAMBOO_PT)
+ features->type == BAMBOO_PT || features->type == MTSCREEN)
features->quirks |= WACOM_QUIRK_MULTI_INPUT;
/* quirk for bamboo touch with 2 low res touches */
@@ -1330,6 +1407,7 @@ void wacom_setup_input_capabilities(struct input_dev *input_dev,
break;
case TABLETPC2FG:
+ case MTSCREEN:
if (features->device_type == BTN_TOOL_FINGER) {
input_mt_init_slots(input_dev, features->touch_max);
@@ -1629,6 +1707,9 @@ static const struct wacom_features wacom_features_0xE2 =
static const struct wacom_features wacom_features_0xE3 =
{ "Wacom ISDv4 E3", WACOM_PKGLEN_TPC2FG, 26202, 16325, 255,
0, TABLETPC2FG, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
+static const struct wacom_features wacom_features_0xE5 =
+ { "Wacom ISDv4 E5", WACOM_PKGLEN_MTOUCH, 26202, 16325, 255,
+ 0, MTSCREEN, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
static const struct wacom_features wacom_features_0xE6 =
{ "Wacom ISDv4 E6", WACOM_PKGLEN_TPC2FG, 27760, 15694, 255,
0, TABLETPC2FG, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
@@ -1784,6 +1865,7 @@ const struct usb_device_id wacom_ids[] = {
{ USB_DEVICE_WACOM(0x9F) },
{ USB_DEVICE_WACOM(0xE2) },
{ USB_DEVICE_WACOM(0xE3) },
+ { USB_DEVICE_WACOM(0xE5) },
{ USB_DEVICE_WACOM(0xE6) },
{ USB_DEVICE_WACOM(0x47) },
{ USB_DEVICE_WACOM(0xF4) },
diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h
index 1c9dc3e..265b09f 100644
--- a/drivers/input/tablet/wacom_wac.h
+++ b/drivers/input/tablet/wacom_wac.h
@@ -24,6 +24,10 @@
#define WACOM_PKGLEN_BBTOUCH 20
#define WACOM_PKGLEN_BBTOUCH3 64
#define WACOM_PKGLEN_BBPEN 10
+#define WACOM_PKGLEN_MTOUCH 62
+
+/* wacom data size per MT contact */
+#define WACOM_BYTES_PER_MT_PACKET 11
/* device IDs */
#define STYLUS_DEVICE_ID 0x02
@@ -39,6 +43,7 @@
#define WACOM_REPORT_INTUOSPAD 12
#define WACOM_REPORT_TPC1FG 6
#define WACOM_REPORT_TPC2FG 13
+#define WACOM_REPORT_TPCMT 13
#define WACOM_REPORT_TPCHID 15
#define WACOM_REPORT_TPCST 16
@@ -68,6 +73,7 @@ enum {
WACOM_MO,
TABLETPC,
TABLETPC2FG,
+ MTSCREEN,
MAX_TYPE
};
@@ -92,6 +98,8 @@ struct wacom_features {
int distance_fuzz;
unsigned quirks;
unsigned touch_max;
+ unsigned num_contacts;
+ unsigned num_contacts_left;
};
struct wacom_shared {
--
1.7.6.4
reply other threads:[~2012-01-04 22:42 UTC|newest]
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