[RFC 12/12] HID: wiimote: Parse classic controller data
From: David Herrmann <hidden>
Date: 2011-10-04 13:37:37
Subsystem:
hid core layer, the rest, wiimote hid driver · Maintainers:
Jiri Kosina, Benjamin Tissoires, Linus Torvalds, David Rheinsberg
Nintendo Classic Controller extension reports lots of keys, two analog sticks and two analog buttons. We report all data through extension input device to userspace. Signed-off-by: David Herrmann <redacted> --- drivers/hid/hid-wiimote-ext.c | 156 +++++++++++++++++++++++++++++++++++++++++ 1 files changed, 156 insertions(+), 0 deletions(-)
diff --git a/drivers/hid/hid-wiimote-ext.c b/drivers/hid/hid-wiimote-ext.c
index 8127207..8e3b6ce 100644
--- a/drivers/hid/hid-wiimote-ext.c
+++ b/drivers/hid/hid-wiimote-ext.c@@ -40,12 +40,42 @@ enum wiiext_type { enum wiiext_keys { WIIEXT_KEY_C, WIIEXT_KEY_Z, + WIIEXT_KEY_A, + WIIEXT_KEY_B, + WIIEXT_KEY_X, + WIIEXT_KEY_Y, + WIIEXT_KEY_ZL, + WIIEXT_KEY_ZR, + WIIEXT_KEY_PLUS, + WIIEXT_KEY_MINUS, + WIIEXT_KEY_HOME, + WIIEXT_KEY_LEFT, + WIIEXT_KEY_RIGHT, + WIIEXT_KEY_UP, + WIIEXT_KEY_DOWN, + WIIEXT_KEY_LT, + WIIEXT_KEY_RT, WIIEXT_KEY_COUNT }; static __u16 wiiext_keymap[] = { BTN_C, /* WIIEXT_KEY_C */ BTN_Z, /* WIIEXT_KEY_Z */ + BTN_A, /* WIIEXT_KEY_A */ + BTN_B, /* WIIEXT_KEY_B */ + BTN_X, /* WIIEXT_KEY_X */ + BTN_Y, /* WIIEXT_KEY_Y */ + BTN_TL2, /* WIIEXT_KEY_ZL */ + BTN_TR2, /* WIIEXT_KEY_ZR */ + KEY_NEXT, /* WIIEXT_KEY_PLUS */ + KEY_PREVIOUS, /* WIIEXT_KEY_MINUS */ + BTN_MODE, /* WIIEXT_KEY_HOME */ + KEY_LEFT, /* WIIEXT_KEY_LEFT */ + KEY_RIGHT, /* WIIEXT_KEY_RIGHT */ + KEY_UP, /* WIIEXT_KEY_UP */ + KEY_DOWN, /* WIIEXT_KEY_DOWN */ + BTN_TL, /* WIIEXT_KEY_LT */ + BTN_TR, /* WIIEXT_KEY_RT */ }; /* diable all extensions */
@@ -374,6 +404,120 @@ static void handler_nunchuck(struct wiimote_ext *ext, const __u8 *payload) static void handler_classic(struct wiimote_ext *ext, const __u8 *payload) { + __s8 rx, ry, lx, ly, lt, rt; + + /* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 1 | RX <5:4> | LX <5:0> | + * 2 | RX <3:2> | LY <5:0> | + * -----+-----+-----+-----+-----------------------------+ + * 3 |RX<1>| LT <5:4> | RY <5:1> | + * -----+-----+-----------+-----------------------------+ + * 4 | LT <3:1> | RT <5:1> | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 5 | BDR | BDD | BLT | B- | BH | B+ | BRT | 1 | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 6 | BZL | BB | BY | BA | BX | BZR | BDL | BDU | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * All buttons are 0 if pressed + * RX and RY are right analog stick + * LX and LY are left analog stick + * LT is left trigger, RT is right trigger + * BLT is 0 if left trigger is fully pressed + * BRT is 0 if right trigger is fully pressed + * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons + * BZL is left Z button and BZR is right Z button + * B-, BH, B+ are +, HOME and - buttons + * BB, BY, BA, BX are A, B, X, Y buttons + * LSB of RX, RY, LT, and RT are not transmitted and always 0. + * + * With motionp enabled it changes slightly to this: + * Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 1 | RX <4:3> | LX <5:1> | BDU | + * 2 | RX <2:1> | LY <5:1> | BDL | + * -----+-----+-----+-----+-----------------------+-----+ + * 3 |RX<0>| LT <4:3> | RY <4:0> | + * -----+-----+-----------+-----------------------------+ + * 4 | LT <2:0> | RT <4:0> | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 5 | BDR | BDD | BLT | B- | BH | B+ | BRT | EXT | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * 6 | BZL | BB | BY | BA | BX | BZR | 0 | 0 | + * -----+-----+-----+-----+-----+-----+-----+-----+-----+ + * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest + * is the same as before. + */ + + if (ext->motionp) { + lx = payload[0] & 0x3e; + ly = payload[0] & 0x3e; + } else { + lx = payload[0] & 0x3f; + ly = payload[0] & 0x3f; + } + + rx = (payload[0] >> 3) & 0x14; + rx |= (payload[1] >> 5) & 0x06; + rx |= (payload[2] >> 7) & 0x01; + ry = payload[2] & 0x1f; + + rt = payload[3] & 0x1f; + lt = (payload[2] >> 2) & 0x18; + lt |= (payload[3] >> 5) & 0x07; + + rx <<= 1; + ry <<= 1; + rt <<= 1; + lt <<= 1; + + input_report_abs(ext->input, ABS_HAT1X, lx - 0x20); + input_report_abs(ext->input, ABS_HAT1Y, ly - 0x20); + input_report_abs(ext->input, ABS_HAT2X, rx - 0x20); + input_report_abs(ext->input, ABS_HAT2Y, ry - 0x20); + input_report_abs(ext->input, ABS_HAT3X, rt - 0x20); + input_report_abs(ext->input, ABS_HAT3Y, lt - 0x20); + + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_RIGHT], + !!(payload[4] & 0x80)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_DOWN], + !!(payload[4] & 0x40)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LT], + !!(payload[4] & 0x20)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_MINUS], + !!(payload[4] & 0x10)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_HOME], + !!(payload[4] & 0x08)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_PLUS], + !!(payload[4] & 0x04)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_RT], + !!(payload[4] & 0x02)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_ZL], + !!(payload[5] & 0x80)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_B], + !!(payload[5] & 0x40)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_Y], + !!(payload[5] & 0x20)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_A], + !!(payload[5] & 0x10)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_X], + !!(payload[5] & 0x08)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_ZR], + !!(payload[5] & 0x04)); + + if (ext->motionp) { + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_UP], + !!(payload[0] & 0x01)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LEFT], + !!(payload[1] & 0x01)); + } else { + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_UP], + !!(payload[5] & 0x01)); + input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LEFT], + !!(payload[5] & 0x02)); + } + + input_sync(ext->input); } /* call this with state.lock spinlock held */
@@ -513,8 +657,20 @@ int wiiext_init(struct wiimote_data *wdata) set_bit(EV_ABS, ext->input->evbit); set_bit(ABS_HAT0X, ext->input->absbit); set_bit(ABS_HAT0Y, ext->input->absbit); + set_bit(ABS_HAT1X, ext->input->absbit); + set_bit(ABS_HAT1Y, ext->input->absbit); + set_bit(ABS_HAT2X, ext->input->absbit); + set_bit(ABS_HAT2Y, ext->input->absbit); + set_bit(ABS_HAT3X, ext->input->absbit); + set_bit(ABS_HAT3Y, 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); + input_set_abs_params(ext->input, ABS_HAT1X, -30, 30, 1, 1); + input_set_abs_params(ext->input, ABS_HAT1Y, -30, 30, 1, 1); + input_set_abs_params(ext->input, ABS_HAT2X, -30, 30, 1, 1); + input_set_abs_params(ext->input, ABS_HAT2Y, -30, 30, 1, 1); + input_set_abs_params(ext->input, ABS_HAT3X, -30, 30, 1, 1); + input_set_abs_params(ext->input, ABS_HAT3Y, -30, 30, 1, 1); set_bit(ABS_RX, ext->input->absbit); set_bit(ABS_RY, ext->input->absbit); set_bit(ABS_RZ, ext->input->absbit);
--
1.7.7