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Message-Id: <1424201233-4158-1-git-send-email-benjamin.tissoires@redhat.com>
Date: Tue, 17 Feb 2015 14:27:13 -0500
From: Benjamin Tissoires <benjamin.tissoires@...hat.com>
To: josep.sanchez.ferreres@....fib.upc.edu,
ACHARD.Frederic.frederic.achard@...e.fr,
Peter Hutterer <peter.hutterer@...-t.net>,
Jiri Kosina <jkosina@...e.cz>,
Ping Cheng <pinglinux@...il.com>,
Jason Gerecke <killertofu@...il.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] HID: wacom: add full support of the Wacom Bamboo PAD
The stylus of this device works just fine out of the box.
The touch is seen by default as a mouse with relative events and some
gestures.
Switching the default in raw mode allows us to retrieve the touch data
and have a consistent user experience accross all the multitouch touchpads.
Note that the buttons of this devices are reported through the touch
interface. There is no 'Pad' interface. It seemed more natural to have
the BTN_LEFT and BTN_RIGHT reported with the touch because they are
placed under the touch interface and it looks like they belong to the
touch part.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
---
Hi,
several things before we can merge this:
Josep, Frederic:
Would you mind testing this patch with your Bamboo pads? I bought the wireless
variant and the USB one has a different ProductID. Hopefully, it will go
smoothly with the current patch.
Peter, Ping, Jason:
Given the nature of the device, I did not exported the 2 buttons as a separate
pad device.
Do you back me up with this choice?
Jiri:
As mentioned to Josep and Frederic, this has not been tested against the USB
(wired) version of the device. So please wait at least for one tested-by before
considering including this patch.
Thanks everyone!
Benjamin
drivers/hid/wacom_sys.c | 23 ++++++++++++++++++
drivers/hid/wacom_wac.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++
drivers/hid/wacom_wac.h | 3 +++
3 files changed, 88 insertions(+)
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index e1ec192..ef4d147 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -410,6 +410,9 @@ static int wacom_query_tablet_data(struct hid_device *hdev,
else if (features->type == WACOM_27QHDT) {
return wacom_set_device_mode(hdev, 131, 3, 2);
}
+ else if (features->type == BAMBOO_PAD) {
+ return wacom_set_device_mode(hdev, 2, 2, 3);
+ }
} else if (features->device_type == BTN_TOOL_PEN) {
if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
return wacom_set_device_mode(hdev, 2, 2, 2);
@@ -1417,6 +1420,20 @@ static int wacom_probe(struct hid_device *hdev,
goto fail_allocate_inputs;
}
+ /*
+ * Bamboo Pad has a generic hid handling for the Pen, and we switch it
+ * into debug mode for the touch part.
+ * We ignore the other interfaces.
+ */
+ if (features->type == BAMBOO_PAD) {
+ if (features->pktlen == WACOM_PKGLEN_PENABLED) {
+ features->type = HID_GENERIC;
+ } else if (features->pktlen != WACOM_PKGLEN_BP_TOUCH) {
+ error = -ENODEV;
+ goto fail_shared_data;
+ }
+ }
+
/* set the default size in case we do not get them from hid */
wacom_set_default_phy(features);
@@ -1451,6 +1468,12 @@ static int wacom_probe(struct hid_device *hdev,
features->y_max = 4096;
}
+ /*
+ * Same thing for Bamboo PAD
+ */
+ if (features->type == BAMBOO_PAD)
+ features->device_type = BTN_TOOL_FINGER;
+
if (hdev->bus == BUS_BLUETOOTH)
features->quirks |= WACOM_QUIRK_BATTERY;
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 1a65079..8627581 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -1826,6 +1826,49 @@ static int wacom_bpt_irq(struct wacom_wac *wacom, size_t len)
return 0;
}
+static int wacom_bamboo_pad_irq(struct wacom_wac *wacom, size_t len)
+{
+ struct input_dev *input = wacom->input;
+ unsigned char *data = wacom->data;
+ unsigned char *finger_data, prefix;
+ unsigned id;
+ int x, y;
+ bool valid;
+
+ /* bit 2 in data[1] is set when there is touch information available */
+ if ((len != WACOM_PKGLEN_BP_TOUCH) ||
+ (data[0] != WACOM_REPORT_BP_TOUCH) ||
+ !(data[1] & 0x02))
+ return 0;
+
+ prefix = data[9];
+
+ for (id = 0; id < wacom->features.touch_max; id++) {
+ valid = !!(prefix & BIT(id)) &&
+ !wacom->shared->stylus_in_proximity;
+
+ input_mt_slot(input, id);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, valid);
+
+ if (!valid)
+ continue;
+
+ finger_data = data + 10 + id * 3;
+ x = finger_data[0] | ((finger_data[1] & 0x0f) << 8);
+ y = (finger_data[2] << 4) | (finger_data[1] >> 4);
+
+ input_report_abs(input, ABS_MT_POSITION_X, x);
+ input_report_abs(input, ABS_MT_POSITION_Y, y);
+ }
+
+ input_mt_sync_frame(input);
+
+ input_report_key(input, BTN_LEFT, prefix & 0x40);
+ input_report_key(input, BTN_RIGHT, prefix & 0x80);
+
+ return 1;
+}
+
static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len)
{
unsigned char *data = wacom->data;
@@ -1962,6 +2005,10 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
sync = wacom_bpt_irq(wacom_wac, len);
break;
+ case BAMBOO_PAD:
+ sync = wacom_bamboo_pad_irq(wacom_wac, len);
+ break;
+
case WIRELESS:
sync = wacom_wireless_irq(wacom_wac, len);
break;
@@ -2300,6 +2347,13 @@ int wacom_setup_pentouch_input_capabilities(struct input_dev *input_dev,
0, 0);
}
break;
+ case BAMBOO_PAD:
+ __clear_bit(ABS_MISC, input_dev->absbit);
+ input_mt_init_slots(input_dev, features->touch_max,
+ INPUT_MT_POINTER);
+ __set_bit(BTN_LEFT, input_dev->keybit);
+ __set_bit(BTN_RIGHT, input_dev->keybit);
+ break;
}
return 0;
}
@@ -2953,6 +3007,12 @@ static const struct wacom_features wacom_features_0x30C =
{ "Wacom ISDv5 30C", .type = WACOM_24HDT, /* Touch */
.oVid = USB_VENDOR_ID_WACOM, .oPid = 0x30A, .touch_max = 10,
.check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
+static const struct wacom_features wacom_features_0x318 =
+ { "Wacom USB Bamboo PAD", 4095, 4095, /* Touch */
+ .type = BAMBOO_PAD, 35, 48, .touch_max = 4 };
+static const struct wacom_features wacom_features_0x319 =
+ { "Wacom Wireless Bamboo PAD", 4095, 4095, /* Touch */
+ .type = BAMBOO_PAD, 35, 48, .touch_max = 4 };
static const struct wacom_features wacom_features_0x323 =
{ "Wacom Intuos P M", 21600, 13500, 1023, 31,
INTUOSHT, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
@@ -3101,6 +3161,8 @@ const struct hid_device_id wacom_ids[] = {
{ USB_DEVICE_WACOM(0x314) },
{ USB_DEVICE_WACOM(0x315) },
{ USB_DEVICE_WACOM(0x317) },
+ { USB_DEVICE_WACOM(0x318) },
+ { USB_DEVICE_WACOM(0x319) },
{ USB_DEVICE_WACOM(0x323) },
{ USB_DEVICE_WACOM(0x32A) },
{ USB_DEVICE_WACOM(0x32B) },
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index 021ee1c..bf43e0f 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -33,6 +33,7 @@
#define WACOM_PKGLEN_MTTPC 40
#define WACOM_PKGLEN_DTUS 68
#define WACOM_PKGLEN_PENABLED 8
+#define WACOM_PKGLEN_BP_TOUCH 32
/* wacom data size per MT contact */
#define WACOM_BYTES_PER_MT_PACKET 11
@@ -67,6 +68,7 @@
#define WACOM_REPORT_24HDT 1
#define WACOM_REPORT_WL 128
#define WACOM_REPORT_USB 192
+#define WACOM_REPORT_BP_TOUCH 16
/* device quirks */
#define WACOM_QUIRK_MULTI_INPUT 0x0001
@@ -122,6 +124,7 @@ enum {
BAMBOO_PT,
WACOM_24HDT,
WACOM_27QHDT,
+ BAMBOO_PAD,
TABLETPC, /* add new TPC below */
TABLETPCE,
TABLETPC2FG,
--
2.1.0
--
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