HID: wacom: add support for Cintiq 27QHD and 27QHD touch

These devices have accelerometers. To report accelerometer coordinates, a new
property, INPUT_PROP_ACCELEROMETER, is added.

Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

4 files changed, 83 insertions, 15 deletions

diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index f01ab3a0c5f5..f0568a7e6de9 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -403,6 +403,9 @@ static int wacom_query_tablet_data(struct hid_device *hdev,
                 else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
                         return wacom_set_device_mode(hdev, 18, 3, 2);
                 }
+                else if (features->type == WACOM_27QHDT) {
+                        return wacom_set_device_mode(hdev, 131, 3, 2);
+                }
         } 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);
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index d239d82a1f90..1a6507999a65 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -656,6 +656,8 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
             data[0] != WACOM_REPORT_INTUOSREAD &&
             data[0] != WACOM_REPORT_INTUOSWRITE &&
             data[0] != WACOM_REPORT_INTUOSPAD &&
+            data[0] != WACOM_REPORT_CINTIQ &&
+            data[0] != WACOM_REPORT_CINTIQPAD &&
             data[0] != WACOM_REPORT_INTUOS5PAD) {
                 dev_dbg(input->dev.parent,
                         "%s: received unknown report #%d\n", __func__, data[0]);
@@ -667,7 +669,8 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
                 idx = data[1] & 0x01;
 
         /* pad packets. Works as a second tool and is always in prox */
-        if (data[0] == WACOM_REPORT_INTUOSPAD || data[0] == WACOM_REPORT_INTUOS5PAD) {
+        if (data[0] == WACOM_REPORT_INTUOSPAD || data[0] == WACOM_REPORT_INTUOS5PAD ||
+            data[0] == WACOM_REPORT_CINTIQPAD) {
                 input = wacom->pad_input;
                 if (features->type >= INTUOS4S && features->type <= INTUOS4L) {
                         input_report_key(input, BTN_0, (data[2] & 0x01));
@@ -767,6 +770,14 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
                         } else {
                                 input_report_abs(input, ABS_MISC, 0);
                         }
+                } else if (features->type == WACOM_27QHD) {
+                        input_report_key(input, KEY_PROG1, data[2] & 0x01);
+                        input_report_key(input, KEY_PROG2, data[2] & 0x02);
+                        input_report_key(input, KEY_PROG3, data[2] & 0x04);
+
+                        input_report_abs(input, ABS_X, be16_to_cpup((__be16 *)&data[4]));
+                        input_report_abs(input, ABS_Y, be16_to_cpup((__be16 *)&data[6]));
+                        input_report_abs(input, ABS_Z, be16_to_cpup((__be16 *)&data[8]));
                 } else if (features->type == CINTIQ_HYBRID) {
                         /*
                          * Do not send hardware buttons under Android. They
@@ -1027,8 +1038,20 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom)
         struct input_dev *input = wacom->input;
         unsigned char *data = wacom->data;
         int i;
-        int current_num_contacts = data[61];
+        int current_num_contacts = 0;
         int contacts_to_send = 0;
+        int num_contacts_left = 4; /* maximum contacts per packet */
+        int byte_per_packet = WACOM_BYTES_PER_24HDT_PACKET;
+        int y_offset = 2;
+
+        if (wacom->features.type == WACOM_27QHDT) {
+                current_num_contacts = data[63];
+                num_contacts_left = 10;
+                byte_per_packet = WACOM_BYTES_PER_QHDTHID_PACKET;
+                y_offset = 0;
+        } else {
+                current_num_contacts = data[61];
+        }
 
         /*
          * First packet resets the counter since only the first
@@ -1037,11 +1060,10 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom)
         if (current_num_contacts)
                 wacom->num_contacts_left = current_num_contacts;
 
-        /* There are at most 4 contacts per packet */
-        contacts_to_send = min(4, wacom->num_contacts_left);
+        contacts_to_send = min(num_contacts_left, wacom->num_contacts_left);
 
         for (i = 0; i < contacts_to_send; i++) {
-                int offset = (WACOM_BYTES_PER_24HDT_PACKET * i) + 1;
+                int offset = (byte_per_packet * i) + 1;
                 bool touch = (data[offset] & 0x1) && !wacom->shared->stylus_in_proximity;
                 int slot = input_mt_get_slot_by_key(input, data[offset + 1]);
 
@@ -1052,18 +1074,23 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom)
 
                 if (touch) {
                         int t_x = get_unaligned_le16(&data[offset + 2]);
-                        int c_x = get_unaligned_le16(&data[offset + 4]);
-                        int t_y = get_unaligned_le16(&data[offset + 6]);
-                        int c_y = get_unaligned_le16(&data[offset + 8]);
-                        int w = get_unaligned_le16(&data[offset + 10]);
-                        int h = get_unaligned_le16(&data[offset + 12]);
+                        int t_y = get_unaligned_le16(&data[offset + 4 + y_offset]);
 
                         input_report_abs(input, ABS_MT_POSITION_X, t_x);
                         input_report_abs(input, ABS_MT_POSITION_Y, t_y);
-                        input_report_abs(input, ABS_MT_TOUCH_MAJOR, min(w,h));
-                        input_report_abs(input, ABS_MT_WIDTH_MAJOR, min(w, h) + int_dist(t_x, t_y, c_x, c_y));
-                        input_report_abs(input, ABS_MT_WIDTH_MINOR, min(w, h));
-                        input_report_abs(input, ABS_MT_ORIENTATION, w > h);
+
+                        if (wacom->features.type != WACOM_27QHDT) {
+                                int c_x = get_unaligned_le16(&data[offset + 4]);
+                                int c_y = get_unaligned_le16(&data[offset + 8]);
+                                int w = get_unaligned_le16(&data[offset + 10]);
+                                int h = get_unaligned_le16(&data[offset + 12]);
+
+                                input_report_abs(input, ABS_MT_TOUCH_MAJOR, min(w,h));
+                                input_report_abs(input, ABS_MT_WIDTH_MAJOR,
+                                                 min(w, h) + int_dist(t_x, t_y, c_x, c_y));
+                                input_report_abs(input, ABS_MT_WIDTH_MINOR, min(w, h));
+                                input_report_abs(input, ABS_MT_ORIENTATION, w > h);
+                        }
                 }
         }
         input_mt_report_pointer_emulation(input, true);
@@ -1894,6 +1921,7 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
         case WACOM_21UX2:
         case WACOM_22HD:
         case WACOM_24HD:
+        case WACOM_27QHD:
         case DTK:
         case CINTIQ_HYBRID:
                 sync = wacom_intuos_irq(wacom_wac);
@@ -1904,6 +1932,7 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
                 break;
 
         case WACOM_24HDT:
+        case WACOM_27QHDT:
                 sync = wacom_24hdt_irq(wacom_wac);
                 break;
 
@@ -2115,6 +2144,7 @@ int wacom_setup_pentouch_input_capabilities(struct input_dev *input_dev,
                 __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
                 break;
 
+        case WACOM_27QHD:
         case WACOM_24HD:
         case DTK:
         case WACOM_22HD:
@@ -2183,6 +2213,7 @@ int wacom_setup_pentouch_input_capabilities(struct input_dev *input_dev,
                 }
                 /* fall through */
 
+        case WACOM_27QHDT:
         case MTSCREEN:
         case MTTPC:
         case MTTPC_B:
@@ -2330,6 +2361,19 @@ int wacom_setup_pad_input_capabilities(struct input_dev *input_dev,
                 input_set_abs_params(input_dev, ABS_THROTTLE, 0, 71, 0, 0);
                 break;
 
+        case WACOM_27QHD:
+                __set_bit(KEY_PROG1, input_dev->keybit);
+                __set_bit(KEY_PROG2, input_dev->keybit);
+                __set_bit(KEY_PROG3, input_dev->keybit);
+                input_set_abs_params(input_dev, ABS_X, -2048, 2048, 0, 0);
+                input_abs_set_res(input_dev, ABS_X, 1024); /* points/g */
+                input_set_abs_params(input_dev, ABS_Y, -2048, 2048, 0, 0);
+                input_abs_set_res(input_dev, ABS_Y, 1024);
+                input_set_abs_params(input_dev, ABS_Z, -2048, 2048, 0, 0);
+                input_abs_set_res(input_dev, ABS_Z, 1024);
+                __set_bit(INPUT_PROP_ACCELEROMETER, input_dev->propbit);
+                break;
+
         case DTK:
                 for (i = 0; i < 6; i++)
                         __set_bit(BTN_0 + i, input_dev->keybit);
@@ -2680,6 +2724,18 @@ static const struct wacom_features wacom_features_0xF6 =
         { "Wacom Cintiq 24HD touch", .type = WACOM_24HDT, /* Touch */
           .oVid = USB_VENDOR_ID_WACOM, .oPid = 0xf8, .touch_max = 10,
           .check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
+static const struct wacom_features wacom_features_0x32A =
+        { "Wacom Cintiq 27QHD", 119740, 67520, 2047,
+          63, WACOM_27QHD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES,
+          WACOM_27QHD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES };
+static const struct wacom_features wacom_features_0x32B =
+        { "Wacom Cintiq 27QHD touch", 119740, 67520, 2047, 63,
+          WACOM_27QHD, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES,
+          WACOM_CINTIQ_OFFSET, WACOM_CINTIQ_OFFSET,
+          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x32C };
+static const struct wacom_features wacom_features_0x32C =
+        { "Wacom Cintiq 27QHD touch", .type = WACOM_27QHDT,
+          .oVid = USB_VENDOR_ID_WACOM, .oPid = 0x32B, .touch_max = 10 };
 static const struct wacom_features wacom_features_0x3F =
         { "Wacom Cintiq 21UX", 87200, 65600, 1023, 63,
           CINTIQ, WACOM_INTUOS3_RES, WACOM_INTUOS3_RES };
@@ -3046,6 +3102,9 @@ const struct hid_device_id wacom_ids[] = {
         { USB_DEVICE_WACOM(0x315) },
         { USB_DEVICE_WACOM(0x317) },
         { USB_DEVICE_WACOM(0x323) },
+        { USB_DEVICE_WACOM(0x32A) },
+        { USB_DEVICE_WACOM(0x32B) },
+        { USB_DEVICE_WACOM(0x32C) },
         { USB_DEVICE_WACOM(0x32F) },
         { USB_DEVICE_WACOM(0x4001) },
         { USB_DEVICE_WACOM(0x4004) },
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index 72e78cc18933..021ee1c1980a 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -13,7 +13,7 @@
 #include <linux/hid.h>
 
 /* maximum packet length for USB devices */
-#define WACOM_PKGLEN_MAX        68
+#define WACOM_PKGLEN_MAX        192
 
 #define WACOM_NAME_MAX          64
 
@@ -37,6 +37,7 @@
 /* wacom data size per MT contact */
 #define WACOM_BYTES_PER_MT_PACKET       11
 #define WACOM_BYTES_PER_24HDT_PACKET    14
+#define WACOM_BYTES_PER_QHDTHID_PACKET   6
 
 /* device IDs */
 #define STYLUS_DEVICE_ID        0x02
@@ -58,6 +59,8 @@
 #define WACOM_REPORT_TPCMT              13
 #define WACOM_REPORT_TPCMT2             3
 #define WACOM_REPORT_TPCHID             15
+#define WACOM_REPORT_CINTIQ             16
+#define WACOM_REPORT_CINTIQPAD          17
 #define WACOM_REPORT_TPCST              16
 #define WACOM_REPORT_DTUS               17
 #define WACOM_REPORT_TPC1FGE            18
@@ -109,6 +112,7 @@ enum {
         WACOM_22HD,
         DTK,
         WACOM_24HD,
+        WACOM_27QHD,
         CINTIQ_HYBRID,
         CINTIQ,
         WACOM_BEE,
@@ -117,6 +121,7 @@ enum {
         WIRELESS,
         BAMBOO_PT,
         WACOM_24HDT,
+        WACOM_27QHDT,
         TABLETPC,   /* add new TPC below */
         TABLETPCE,
         TABLETPC2FG,
diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index a1d7e931ab72..b0a813079852 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -166,6 +166,7 @@ struct input_keymap_entry {
 #define INPUT_PROP_SEMI_MT              0x03    /* touch rectangle only */
 #define INPUT_PROP_TOPBUTTONPAD         0x04    /* softbuttons at top of pad */
 #define INPUT_PROP_POINTING_STICK       0x05    /* is a pointing stick */
+#define INPUT_PROP_ACCELEROMETER        0x06    /* has accelerometer */
 
 #define INPUT_PROP_MAX                  0x1f
 #define INPUT_PROP_CNT                  (INPUT_PROP_MAX + 1)