[PATCH 1/3 v2] Input: wacom - Support EMR and MFT sensors of Cintiq Companion Hybrid

[Jason Gerecke <killertofu@gmail.com>]

Adds support for the sensors integrated in to the Cintiq Companion
Hybrid. These sensors use by-and-large the same protocol as the
Cintiq 24HD touch.

NOTE: The ExpressKeys on the Cintiq Companion Hybrid are wired to
both the EMR controller and CPU GPIO pins. It may be necessary to
disable their functionality in this driver if building a custom
Android kernel for this device (lest two events be sent to userspace
for every button press).

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
---
Changes in v2:
 * Remove "#if 1" block surrounding conditional ExpressKey reporting
 * Change to C-style comments

 drivers/input/tablet/wacom_sys.c |  2 +-
 drivers/input/tablet/wacom_wac.c | 46 +++++++++++++++++++++++++++++++++++++++-
 drivers/input/tablet/wacom_wac.h |  1 +
 3 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index 1ad3e07..8fa7af7 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -548,7 +548,7 @@ static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_feat
 			/* MT Tablet PC touch */
 			return wacom_set_device_mode(intf, 3, 4, 4);
 		}
-		else if (features->type == WACOM_24HDT) {
+		else if (features->type == WACOM_24HDT || features->type == ASTERIX) {
 			return wacom_set_device_mode(intf, 18, 3, 2);
 		}
 	} else if (features->device_type == BTN_TOOL_PEN) {
diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index 541197b..9265b3d 100644
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -475,7 +475,7 @@ static void wacom_intuos_general(struct wacom_wac *wacom)
 	/* general pen packet */
 	if ((data[1] & 0xb8) == 0xa0) {
 		t = (data[6] << 2) | ((data[7] >> 6) & 3);
-		if (features->type >= INTUOS4S && features->type <= WACOM_24HD) {
+		if (features->type >= INTUOS4S && features->type <= ASTERIX) {
 			t = (t << 1) | (data[1] & 1);
 		}
 		input_report_abs(input, ABS_PRESSURE, t);
@@ -619,6 +619,22 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
 			} else {
 				input_report_abs(input, ABS_MISC, 0);
 			}
+		} else if (features->type == ASTERIX) {
+			/*
+			 * Do not send hardware buttons under Android. They
+			 * are already sent to the system through GPIO (and
+			 * have different meaning).
+			 */
+			input_report_key(input, BTN_1, (data[4] & 0x01));
+			input_report_key(input, BTN_2, (data[4] & 0x02));
+			input_report_key(input, BTN_3, (data[4] & 0x04));
+			input_report_key(input, BTN_4, (data[4] & 0x08));
+
+			input_report_key(input, BTN_5, (data[4] & 0x10));  /* Right  */
+			input_report_key(input, BTN_6, (data[4] & 0x20));  /* Up     */
+			input_report_key(input, BTN_7, (data[4] & 0x40));  /* Left   */
+			input_report_key(input, BTN_8, (data[4] & 0x80));  /* Down   */
+			input_report_key(input, BTN_0, (data[3] & 0x01));  /* Center */
 		} else if (features->type >= INTUOS5S && features->type <= INTUOS5L) {
 			int i;
 
@@ -1325,6 +1341,7 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
 	case WACOM_22HD:
 	case WACOM_24HD:
 	case DTK:
+	case ASTERIX:
 		sync = wacom_intuos_irq(wacom_wac);
 		break;
 
@@ -1763,6 +1780,24 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
 					      0, 0);
 		}
 		break;
+
+	case ASTERIX:
+		__set_bit(BTN_1, input_dev->keybit);
+		__set_bit(BTN_2, input_dev->keybit);
+		__set_bit(BTN_3, input_dev->keybit);
+		__set_bit(BTN_4, input_dev->keybit);
+
+		__set_bit(BTN_5, input_dev->keybit);
+		__set_bit(BTN_6, input_dev->keybit);
+		__set_bit(BTN_7, input_dev->keybit);
+		__set_bit(BTN_8, input_dev->keybit);
+		__set_bit(BTN_0, input_dev->keybit);
+
+		input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
+		__set_bit(INPUT_PROP_DIRECT, input_dev->propbit);
+
+		wacom_setup_cintiq(wacom_wac);
+		break;
 	}
 	return 0;
 }
@@ -2117,6 +2152,13 @@ static const struct wacom_features wacom_features_0xDF =
 static const struct wacom_features wacom_features_0x6004 =
 	{ "ISD-V4",               WACOM_PKGLEN_GRAPHIRE,  12800,  8000,  255,
 	  0, TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
+static const struct wacom_features wacom_features_0x0307 =
+	{ "Wacom ISDv5 307", WACOM_PKGLEN_INTUOS,  59552,  33848, 2047,
+	  63, ASTERIX, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES,
+	  .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x309 };
+static const struct wacom_features wacom_features_0x0309 =
+	{ "Wacom ISDv5 309", .type = WACOM_24HDT, /* Touch */
+	  .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x0307, .touch_max = 10 };
 
 #define USB_DEVICE_WACOM(prod)					\
 	USB_DEVICE(USB_VENDOR_ID_WACOM, prod),			\
@@ -2247,6 +2289,8 @@ const struct usb_device_id wacom_ids[] = {
 	{ USB_DEVICE_WACOM(0xF8) },
 	{ USB_DEVICE_DETAILED(0xF6, USB_CLASS_HID, 0, 0) },
 	{ USB_DEVICE_WACOM(0xFA) },
+	{ USB_DEVICE_WACOM(0x0307) },
+	{ USB_DEVICE_DETAILED(0x0309, USB_CLASS_HID, 0, 0) },
 	{ USB_DEVICE_LENOVO(0x6004) },
 	{ }
 };
diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h
index dfc9e08..f47a5c1 100644
--- a/drivers/input/tablet/wacom_wac.h
+++ b/drivers/input/tablet/wacom_wac.h
@@ -80,6 +80,7 @@ enum {
 	WACOM_22HD,
 	DTK,
 	WACOM_24HD,
+	ASTERIX,
 	CINTIQ,
 	WACOM_BEE,
 	WACOM_13HD,
-- 
1.8.3.4