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author | David Herrmann <dh.herrmann@googlemail.com> | 2012-09-17 12:31:35 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2012-09-17 17:19:49 +0200 |
commit | 5ad67fbc2a0f5b7e744ce2263a2340b7ebe92e00 (patch) | |
tree | 1a22a367f1bf3bbdb06aa9279be9987b3a43f6fc /drivers/hid | |
parent | 5b6e7f1c169db10632459c28f148011e039187bd (diff) | |
download | linux-5ad67fbc2a0f5b7e744ce2263a2340b7ebe92e00.tar.gz linux-5ad67fbc2a0f5b7e744ce2263a2340b7ebe92e00.tar.bz2 linux-5ad67fbc2a0f5b7e744ce2263a2340b7ebe92e00.zip |
HID: wiimote: Add Nintendo Balance-Board support
The Nintendo Balance-Board is a controller which behaves exactly like the
Wii Remote but reports all its data through a special extension device.
Hence, we can simply add the Balance-Board as extension device and we get
full support for it.
Tested-by: Florian Echtler <floe@butterbrot.org>
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r-- | drivers/hid/hid-wiimote-ext.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/hid/hid-wiimote-ext.c b/drivers/hid/hid-wiimote-ext.c index 0a1805c9b0e5..ae022b863593 100644 --- a/drivers/hid/hid-wiimote-ext.c +++ b/drivers/hid/hid-wiimote-ext.c @@ -34,6 +34,7 @@ enum wiiext_type { WIIEXT_NONE, /* placeholder */ WIIEXT_CLASSIC, /* Nintendo classic controller */ WIIEXT_NUNCHUCK, /* Nintendo nunchuck controller */ + WIIEXT_BALANCE_BOARD, /* Nintendo balance board controller */ }; enum wiiext_keys { @@ -151,6 +152,8 @@ static __u8 ext_read(struct wiimote_ext *ext) type = WIIEXT_NUNCHUCK; else if (rmem[0] == 0x01 && rmem[1] == 0x01) type = WIIEXT_CLASSIC; + else if (rmem[0] == 0x04 && rmem[1] == 0x02) + type = WIIEXT_BALANCE_BOARD; } wiimote_cmd_release(ext->wdata); @@ -509,6 +512,55 @@ static void handler_classic(struct wiimote_ext *ext, const __u8 *payload) input_sync(ext->input); } +static void handler_balance_board(struct wiimote_ext *ext, const __u8 *payload) +{ + __s32 val[4]; + + /* Byte | 8 7 6 5 4 3 2 1 | + * -----+--------------------------+ + * 1 | Top Right <15:8> | + * 2 | Top Right <7:0> | + * -----+--------------------------+ + * 3 | Bottom Right <15:8> | + * 4 | Bottom Right <7:0> | + * -----+--------------------------+ + * 5 | Top Left <15:8> | + * 6 | Top Left <7:0> | + * -----+--------------------------+ + * 7 | Bottom Left <15:8> | + * 8 | Bottom Left <7:0> | + * -----+--------------------------+ + * + * These values represent the weight-measurements of the Wii-balance + * board with 16bit precision. + * + * The balance-board is never reported interleaved with motionp. + */ + + val[0] = payload[0]; + val[0] <<= 8; + val[0] |= payload[1]; + + val[1] = payload[2]; + val[1] <<= 8; + val[1] |= payload[3]; + + val[2] = payload[4]; + val[2] <<= 8; + val[2] |= payload[5]; + + val[3] = payload[6]; + val[3] <<= 8; + val[3] |= payload[7]; + + input_report_abs(ext->input, ABS_HAT0X, val[0]); + input_report_abs(ext->input, ABS_HAT0Y, val[1]); + input_report_abs(ext->input, ABS_HAT1X, val[2]); + input_report_abs(ext->input, ABS_HAT1Y, val[3]); + + input_sync(ext->input); +} + /* call this with state.lock spinlock held */ void wiiext_handle(struct wiimote_data *wdata, const __u8 *payload) { @@ -523,6 +575,8 @@ void wiiext_handle(struct wiimote_data *wdata, const __u8 *payload) handler_nunchuck(ext, payload); } else if (ext->ext_type == WIIEXT_CLASSIC) { handler_classic(ext, payload); + } else if (ext->ext_type == WIIEXT_BALANCE_BOARD) { + handler_balance_board(ext, payload); } } @@ -551,6 +605,11 @@ static ssize_t wiiext_show(struct device *dev, struct device_attribute *attr, return sprintf(buf, "motionp+classic\n"); else return sprintf(buf, "classic\n"); + } else if (type == WIIEXT_BALANCE_BOARD) { + if (motionp) + return sprintf(buf, "motionp+balanceboard\n"); + else + return sprintf(buf, "balanceboard\n"); } else { if (motionp) return sprintf(buf, "motionp\n"); |