diff options
Diffstat (limited to 'drivers/hid/hid-wiimote-ext.c')
| -rw-r--r-- | drivers/hid/hid-wiimote-ext.c | 105 |
1 files changed, 104 insertions, 1 deletions
diff --git a/drivers/hid/hid-wiimote-ext.c b/drivers/hid/hid-wiimote-ext.c index ceec0ce..f05f154 100644 --- a/drivers/hid/hid-wiimote-ext.c +++ b/drivers/hid/hid-wiimote-ext.c @@ -36,6 +36,17 @@ enum wiiext_type { WIIEXT_NUNCHUCK, /* Nintendo nunchuck controller */ }; +enum wiiext_keys { + WIIEXT_KEY_C, + WIIEXT_KEY_Z, + WIIEXT_KEY_COUNT +}; + +static __u16 wiiext_keymap[] = { + BTN_C, /* WIIEXT_KEY_C */ + BTN_Z, /* WIIEXT_KEY_Z */ +}; + /* diable all extensions */ static void ext_disable(struct wiimote_ext *ext) { @@ -272,6 +283,82 @@ static void handler_motionp(struct wiimote_ext *ext, const __u8 *payload) static void handler_nunchuck(struct wiimote_ext *ext, const __u8 *payload) { + __s16 x, y, z, bx, by; + + /* Byte | 8 7 | 6 5 | 4 3 | 2 | 1 | + * -----+----------+---------+---------+----+-----+ + * 1 | Button X <7:0> | + * 2 | Button Y <7:0> | + * -----+----------+---------+---------+----+-----+ + * 3 | Speed X <9:2> | + * 4 | Speed Y <9:2> | + * 5 | Speed Z <9:2> | + * -----+----------+---------+---------+----+-----+ + * 6 | Z <1:0> | Y <1:0> | X <1:0> | BC | BZ | + * -----+----------+---------+---------+----+-----+ + * Button X/Y is the analog stick. Speed X, Y and Z are the + * accelerometer data in the same format as the wiimote's accelerometer. + * The 6th byte contains the LSBs of the accelerometer data. + * BC and BZ are the C and Z buttons: 0 means pressed + * + * If reported interleaved with motionp, then the layout changes. The + * 5th and 6th byte changes to: + * -----+-----------------------------------+-----+ + * 5 | Speed Z <9:3> | EXT | + * -----+--------+-----+-----+----+----+----+-----+ + * 6 |Z <2:1> |Y <1>|X <1>| BC | BZ | 0 | 0 | + * -----+--------+-----+-----+----+----+----+-----+ + * All three accelerometer values lose their LSB. The other data is + * still available but slightly moved. + * + * Center data for button values is 128. Center value for accelerometer + * values it 512 / 0x200 + */ + + bx = payload[0]; + by = payload[1]; + bx -= 128; + by -= 128; + + x = payload[2] << 2; + y = payload[3] << 2; + z = payload[4] << 2; + + if (ext->motionp) { + x |= (payload[5] >> 3) & 0x02; + y |= (payload[5] >> 4) & 0x02; + z &= ~0x4; + z |= (payload[5] >> 5) & 0x06; + } else { + x |= (payload[5] >> 2) & 0x03; + y |= (payload[5] >> 4) & 0x03; + z |= (payload[5] >> 6) & 0x03; + } + + x -= 0x200; + y -= 0x200; + z -= 0x200; + + input_report_abs(ext->input, ABS_HAT0X, bx); + input_report_abs(ext->input, ABS_HAT0Y, by); + + input_report_abs(ext->input, ABS_RX, x); + input_report_abs(ext->input, ABS_RY, y); + input_report_abs(ext->input, ABS_RZ, z); + + if (ext->motionp) { + input_report_key(ext->input, + wiiext_keymap[WIIEXT_KEY_Z], !!(payload[5] & 0x04)); + input_report_key(ext->input, + wiiext_keymap[WIIEXT_KEY_C], !!(payload[5] & 0x08)); + } else { + input_report_key(ext->input, + wiiext_keymap[WIIEXT_KEY_Z], !!(payload[5] & 0x01)); + input_report_key(ext->input, + wiiext_keymap[WIIEXT_KEY_C], !!(payload[5] & 0x02)); + } + + input_sync(ext->input); } static void handler_classic(struct wiimote_ext *ext, const __u8 *payload) @@ -383,7 +470,7 @@ int wiiext_init(struct wiimote_data *wdata) { struct wiimote_ext *ext; unsigned long flags; - int ret; + int ret, i; ext = kzalloc(sizeof(*ext), GFP_KERNEL); if (!ext) @@ -408,6 +495,22 @@ int wiiext_init(struct wiimote_data *wdata) ext->input->id.version = wdata->hdev->version; ext->input->name = WIIMOTE_NAME " Extension"; + set_bit(EV_KEY, ext->input->evbit); + for (i = 0; i < WIIEXT_KEY_COUNT; ++i) + set_bit(wiiext_keymap[i], ext->input->keybit); + + set_bit(EV_ABS, ext->input->evbit); + set_bit(ABS_HAT0X, ext->input->absbit); + set_bit(ABS_HAT0Y, ext->input->absbit); + input_set_abs_params(ext->input, ABS_HAT0X, -120, 120, 2, 4); + input_set_abs_params(ext->input, ABS_HAT0Y, -120, 120, 2, 4); + set_bit(ABS_RX, ext->input->absbit); + set_bit(ABS_RY, ext->input->absbit); + set_bit(ABS_RZ, ext->input->absbit); + input_set_abs_params(ext->input, ABS_RX, -500, 500, 2, 4); + input_set_abs_params(ext->input, ABS_RY, -500, 500, 2, 4); + input_set_abs_params(ext->input, ABS_RZ, -500, 500, 2, 4); + ret = input_register_device(ext->input); if (ret) { input_free_device(ext->input); |