The nunchuk device can easily be used as reduced gamepad. Add a new
mapping according to linux gamepad rules.
Note that we map it as gamepad with:
- one analog-stick (left)
- two trigger buttons (left upper+lower)
- accelerometer
Signed-off-by: David Herrmann <dh.herrmann@xxxxxxxxx>
---
drivers/hid/hid-wiimote-modules.c | 94 ++++++++++++++++++++++++++++-----------
1 file changed, 67 insertions(+), 27 deletions(-)
diff --git a/drivers/hid/hid-wiimote-modules.c b/drivers/hid/hid-wiimote-modules.c
index 372fec1..a02059c 100644
--- a/drivers/hid/hid-wiimote-modules.c
+++ b/drivers/hid/hid-wiimote-modules.c
@@ -839,15 +839,24 @@ enum wiimod_nunchuk_keys {
WIIMOD_NUNCHUK_KEY_NUM,
};
-static const __u16 wiimod_nunchuk_map[] = {
+static const __u16 wiimod_nunchuk_map_legacy[] = {
BTN_C, /* WIIMOD_NUNCHUK_KEY_C */
BTN_Z, /* WIIMOD_NUNCHUK_KEY_Z */
};
+static const __u16 wiimod_nunchuk_map[] = {
+ BTN_TL, /* WIIMOD_NUNCHUK_KEY_C */
+ BTN_TL2, /* WIIMOD_NUNCHUK_KEY_Z */
+};
+
static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
{
+ const __u16 *map = wiimod_nunchuk_map;
__s16 x, y, z, bx, by;
+ if (wdata->state.flags & WIIPROTO_FLAG_LEGACY)
+ map = wiimod_nunchuk_map_legacy;
+
/* Byte | 8 7 | 6 5 | 4 3 | 2 | 1 |
* -----+----------+---------+---------+----+-----+
* 1 | Button X <7:0> |
@@ -902,26 +911,35 @@ static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
y -= 0x200;
z -= 0x200;
- input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
- input_report_abs(wdata->extension.input, ABS_HAT0Y, by);
+ if (wdata->state.flags & WIIPROTO_FLAG_LEGACY) {
+ input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
+ input_report_abs(wdata->extension.input, ABS_HAT0Y, by);
- input_report_abs(wdata->extension.input, ABS_RX, x);
- input_report_abs(wdata->extension.input, ABS_RY, y);
- input_report_abs(wdata->extension.input, ABS_RZ, z);
+ input_report_abs(wdata->extension.input, ABS_RX, x);
+ input_report_abs(wdata->extension.input, ABS_RY, y);
+ input_report_abs(wdata->extension.input, ABS_RZ, z);
+ } else {
+ input_report_abs(wdata->extension.input, ABS_X, bx);
+ input_report_abs(wdata->extension.input, ABS_Y, -by);
+
+ input_report_abs(wdata->extension.input, ABS_ACCEL_X, x);
+ input_report_abs(wdata->extension.input, ABS_ACCEL_Y, y);
+ input_report_abs(wdata->extension.input, ABS_ACCEL_Z, z);
+ }
if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
input_report_key(wdata->extension.input,
- wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
+ map[WIIMOD_NUNCHUK_KEY_Z],
!(ext[5] & 0x04));
input_report_key(wdata->extension.input,
- wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
+ map[WIIMOD_NUNCHUK_KEY_C],
!(ext[5] & 0x08));
} else {
input_report_key(wdata->extension.input,
- wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
+ map[WIIMOD_NUNCHUK_KEY_Z],
!(ext[5] & 0x01));
input_report_key(wdata->extension.input,
- wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
+ map[WIIMOD_NUNCHUK_KEY_C],
!(ext[5] & 0x02));
}
@@ -955,12 +973,16 @@ static void wiimod_nunchuk_close(struct input_dev *dev)
static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
struct wiimote_data *wdata)
{
+ const __u16 *map = wiimod_nunchuk_map;
int ret, i;
wdata->extension.input = input_allocate_device();
if (!wdata->extension.input)
return -ENOMEM;
+ if (wdata->state.flags & WIIPROTO_FLAG_LEGACY)
+ map = wiimod_nunchuk_map_legacy;
+
input_set_drvdata(wdata->extension.input, wdata);
wdata->extension.input->open = wiimod_nunchuk_open;
wdata->extension.input->close = wiimod_nunchuk_close;
@@ -973,25 +995,43 @@ static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
set_bit(EV_KEY, wdata->extension.input->evbit);
for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
- set_bit(wiimod_nunchuk_map[i],
- wdata->extension.input->keybit);
+ set_bit(map[i], wdata->extension.input->keybit);
set_bit(EV_ABS, wdata->extension.input->evbit);
- set_bit(ABS_HAT0X, wdata->extension.input->absbit);
- set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
- input_set_abs_params(wdata->extension.input,
- ABS_HAT0X, -120, 120, 2, 4);
- input_set_abs_params(wdata->extension.input,
- ABS_HAT0Y, -120, 120, 2, 4);
- set_bit(ABS_RX, wdata->extension.input->absbit);
- set_bit(ABS_RY, wdata->extension.input->absbit);
- set_bit(ABS_RZ, wdata->extension.input->absbit);
- input_set_abs_params(wdata->extension.input,
- ABS_RX, -500, 500, 2, 4);
- input_set_abs_params(wdata->extension.input,
- ABS_RY, -500, 500, 2, 4);
- input_set_abs_params(wdata->extension.input,
- ABS_RZ, -500, 500, 2, 4);
+
+ if (wdata->state.flags & WIIPROTO_FLAG_LEGACY) {
+ set_bit(ABS_HAT0X, wdata->extension.input->absbit);
+ set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
+ input_set_abs_params(wdata->extension.input,
+ ABS_HAT0X, -120, 120, 2, 4);
+ input_set_abs_params(wdata->extension.input,
+ ABS_HAT0Y, -120, 120, 2, 4);
+ set_bit(ABS_RX, wdata->extension.input->absbit);
+ set_bit(ABS_RY, wdata->extension.input->absbit);
+ set_bit(ABS_RZ, wdata->extension.input->absbit);
+ input_set_abs_params(wdata->extension.input,
+ ABS_RX, -500, 500, 2, 4);
+ input_set_abs_params(wdata->extension.input,
+ ABS_RY, -500, 500, 2, 4);
+ input_set_abs_params(wdata->extension.input,
+ ABS_RZ, -500, 500, 2, 4);
+ } else {
+ set_bit(ABS_X, wdata->extension.input->absbit);
+ set_bit(ABS_Y, wdata->extension.input->absbit);
+ input_set_abs_params(wdata->extension.input,
+ ABS_X, -120, 120, 2, 4);
+ input_set_abs_params(wdata->extension.input,
+ ABS_Y, -120, 120, 2, 4);
+ set_bit(ABS_ACCEL_X, wdata->extension.input->absbit);
+ set_bit(ABS_ACCEL_Y, wdata->extension.input->absbit);
+ set_bit(ABS_ACCEL_Z, wdata->extension.input->absbit);
+ input_set_abs_params(wdata->extension.input,
+ ABS_ACCEL_X, -500, 500, 2, 4);
+ input_set_abs_params(wdata->extension.input,
+ ABS_ACCEL_Y, -500, 500, 2, 4);
+ input_set_abs_params(wdata->extension.input,
+ ABS_ACCEL_Z, -500, 500, 2, 4);
+ }
ret = input_register_device(wdata->extension.input);
if (ret)
--
1.8.4.1
--
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