[PATCH v3 2/7] Input - wacom: handle Graphire BT tablets in wacom.ko

From: Benjamin Tissoires
Date: Tue Jul 29 2014 - 14:43:42 EST

First, merge the Graphire BT tablet.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---
drivers/hid/hid-core.c | 1 -
drivers/hid/hid-wacom.c | 1 -
drivers/hid/wacom_sys.c | 33 +++++++++++++++++
drivers/hid/wacom_wac.c | 95 +++++++++++++++++++++++++++++++++++++++++++++++--
drivers/hid/wacom_wac.h | 2 ++
5 files changed, 128 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 0e4d290..d824a45 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1943,7 +1943,6 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
- { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
index 4874f4e..967c457 100644
--- a/drivers/hid/hid-wacom.c
+++ b/drivers/hid/hid-wacom.c
@@ -952,7 +952,6 @@ static void wacom_remove(struct hid_device *hdev)
}

static const struct hid_device_id wacom_devices[] = {
- { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },

{ }
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 18154a5..c21e58b 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -265,6 +265,39 @@ static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
struct wacom_features *features)
{
+ struct wacom *wacom = hid_get_drvdata(hdev);
+ int ret;
+ u8 rep_data[2];
+
+ switch (features->type) {
+ case GRAPHIRE_BT:
+ rep_data[0] = 0x03;
+ rep_data[1] = 0x00;
+ ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
+ rep_data[0], rep_data, 2, 3);
+
+ if (ret >= 0) {
+ rep_data[0] = speed == 0 ? 0x05 : 0x06;
+ rep_data[1] = 0x00;
+
+ ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
+ rep_data[0], rep_data, 2, 3);
+
+ if (ret >= 0) {
+ wacom->wacom_wac.bt_high_speed = speed;
+ return 0;
+ }
+ }
+
+ /*
+ * Note that if the raw queries fail, it's not a hard failure
+ * and it is safe to continue
+ */
+ hid_warn(hdev, "failed to poke device, command %d, err %d\n",
+ rep_data[0], ret);
+ break;
+ }
+
return 0;
}

diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index cfd2ae1..ac891dc 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -30,6 +30,10 @@
*/
#define WACOM_CONTACT_AREA_SCALE 2607

+/*percent of battery capacity for Graphire
+ 8th value means AC online and show 100% capacity */
+static unsigned short batcap_gr[8] = { 1, 15, 25, 35, 50, 70, 100, 100 };
+
static int wacom_penpartner_irq(struct wacom_wac *wacom)
{
unsigned char *data = wacom->data;
@@ -263,11 +267,19 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
unsigned char *data = wacom->data;
struct input_dev *input = wacom->input;
struct input_dev *pad_input = wacom->pad_input;
+ int battery_capacity, ps_connected;
int prox;
int rw = 0;
int retval = 0;

- if (data[0] != WACOM_REPORT_PENABLED) {
+ if (features->type == GRAPHIRE_BT) {
+ if (data[0] != WACOM_REPORT_PENABLED_BT) {
+ dev_dbg(input->dev.parent,
+ "%s: received unknown report #%d\n", __func__,
+ data[0]);
+ goto exit;
+ }
+ } else if (data[0] != WACOM_REPORT_PENABLED) {
dev_dbg(input->dev.parent,
"%s: received unknown report #%d\n", __func__, data[0]);
goto exit;
@@ -301,7 +313,12 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
if (wacom->tool[0] != BTN_TOOL_MOUSE) {
- input_report_abs(input, ABS_PRESSURE, data[6] | ((data[7] & 0x03) << 8));
+ if (features->type == GRAPHIRE_BT)
+ input_report_abs(input, ABS_PRESSURE, data[6] |
+ (((__u16) (data[1] & 0x08)) << 5));
+ else
+ input_report_abs(input, ABS_PRESSURE, data[6] |
+ ((data[7] & 0x03) << 8));
input_report_key(input, BTN_TOUCH, data[1] & 0x01);
input_report_key(input, BTN_STYLUS, data[1] & 0x02);
input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
@@ -312,6 +329,20 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
features->type == WACOM_MO) {
input_report_abs(input, ABS_DISTANCE, data[6] & 0x3f);
rw = (data[7] & 0x04) - (data[7] & 0x03);
+ } else if (features->type == GRAPHIRE_BT) {
+ /* Compute distance between mouse and tablet */
+ rw = 44 - (data[6] >> 2);
+ rw = clamp_val(rw, 0, 31);
+ input_report_abs(input, ABS_DISTANCE, rw);
+ if (((data[1] >> 5) & 3) == 2) {
+ /* Mouse with wheel */
+ input_report_key(input, BTN_MIDDLE,
+ data[1] & 0x04);
+ rw = (data[6] & 0x01) ? -1 :
+ (data[6] & 0x02) ? 1 : 0;
+ } else {
+ rw = 0;
+ }
} else {
input_report_abs(input, ABS_DISTANCE, data[7] & 0x3f);
rw = -(signed char)data[6];
@@ -358,6 +389,31 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
retval = 1;
}
break;
+ case GRAPHIRE_BT:
+ prox = data[7] & 0x03;
+ if (prox || wacom->id[1]) {
+ wacom->id[1] = PAD_DEVICE_ID;
+ input_report_key(pad_input, BTN_0, (data[7] & 0x02));
+ input_report_key(pad_input, BTN_1, (data[7] & 0x01));
+ if (!prox)
+ wacom->id[1] = 0;
+ input_report_abs(pad_input, ABS_MISC, wacom->id[1]);
+ retval = 1;
+ }
+ break;
+ }
+
+ /* Store current battery capacity and power supply state */
+ if (features->type == GRAPHIRE_BT) {
+ rw = (data[7] >> 2 & 0x07);
+ battery_capacity = batcap_gr[rw];
+ ps_connected = rw == 7;
+ if ((wacom->battery_capacity != battery_capacity) ||
+ (wacom->ps_connected != ps_connected)) {
+ wacom->battery_capacity = battery_capacity;
+ wacom->ps_connected = ps_connected;
+ wacom_notify_battery(wacom);
+ }
}
exit:
return retval;
@@ -1418,6 +1474,7 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)

case WACOM_G4:
case GRAPHIRE:
+ case GRAPHIRE_BT:
case WACOM_MO:
sync = wacom_graphire_irq(wacom_wac);
break;
@@ -1654,6 +1711,27 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
__set_bit(INPUT_PROP_POINTER, input_dev->propbit);
break;

+ case GRAPHIRE_BT:
+ __clear_bit(ABS_MISC, input_dev->absbit);
+ input_set_abs_params(input_dev, ABS_DISTANCE, 0,
+ features->distance_max,
+ 0, 0);
+
+ input_set_capability(input_dev, EV_REL, REL_WHEEL);
+
+ __set_bit(BTN_LEFT, input_dev->keybit);
+ __set_bit(BTN_RIGHT, input_dev->keybit);
+ __set_bit(BTN_MIDDLE, input_dev->keybit);
+
+ __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
+ __set_bit(BTN_TOOL_PEN, input_dev->keybit);
+ __set_bit(BTN_TOOL_MOUSE, input_dev->keybit);
+ __set_bit(BTN_STYLUS, input_dev->keybit);
+ __set_bit(BTN_STYLUS2, input_dev->keybit);
+
+ __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
+ break;
+
case WACOM_24HD:
input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
input_set_abs_params(input_dev, ABS_THROTTLE, 0, 71, 0, 0);
@@ -1862,6 +1940,11 @@ int wacom_setup_pad_input_capabilities(struct input_dev *input_dev,
input_set_abs_params(input_dev, ABS_Y, 0, 1, 0, 0);

switch (features->type) {
+ case GRAPHIRE_BT:
+ __set_bit(BTN_0, input_dev->keybit);
+ __set_bit(BTN_1, input_dev->keybit);
+ break;
+
case WACOM_MO:
__set_bit(BTN_BACK, input_dev->keybit);
__set_bit(BTN_LEFT, input_dev->keybit);
@@ -2031,6 +2114,9 @@ static const struct wacom_features wacom_features_0x00 =
static const struct wacom_features wacom_features_0x10 =
{ "Wacom Graphire", 10206, 7422, 511, 63,
GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
+static const struct wacom_features wacom_features_0x81 =
+ { "Wacom Graphire BT", 16704, 12064, 511, 32,
+ GRAPHIRE_BT, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
static const struct wacom_features wacom_features_0x11 =
{ "Wacom Graphire2 4x5", 10206, 7422, 511, 63,
GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
@@ -2426,6 +2512,10 @@ static const struct wacom_features wacom_features_0x309 =
HID_DEVICE(BUS_USB, HID_GROUP_WACOM, USB_VENDOR_ID_WACOM, prod),\
.driver_data = (kernel_ulong_t)&wacom_features_##prod

+#define BT_DEVICE_WACOM(prod) \
+ HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_WACOM, USB_VENDOR_ID_WACOM, prod),\
+ .driver_data = (kernel_ulong_t)&wacom_features_##prod
+
#define USB_DEVICE_LENOVO(prod) \
HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, prod), \
.driver_data = (kernel_ulong_t)&wacom_features_##prod
@@ -2483,6 +2573,7 @@ const struct hid_device_id wacom_ids[] = {
{ USB_DEVICE_WACOM(0x69) },
{ USB_DEVICE_WACOM(0x6A) },
{ USB_DEVICE_WACOM(0x6B) },
+ { BT_DEVICE_WACOM(0x81) },
{ USB_DEVICE_WACOM(0x84) },
{ USB_DEVICE_WACOM(0x90) },
{ USB_DEVICE_WACOM(0x93) },
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index 3aa55d9..0f3df34 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -46,6 +46,7 @@

/* wacom data packet report IDs */
#define WACOM_REPORT_PENABLED 2
+#define WACOM_REPORT_PENABLED_BT 3
#define WACOM_REPORT_INTUOSREAD 5
#define WACOM_REPORT_INTUOSWRITE 6
#define WACOM_REPORT_INTUOSPAD 12
@@ -73,6 +74,7 @@
enum {
PENPARTNER = 0,
GRAPHIRE,
+ GRAPHIRE_BT,
WACOM_G4,
PTU,
PL,
--
2.0.3

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