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authorDavid Herrmann <dh.herrmann@gmail.com>2013-10-28 17:49:20 +0100
committerJiri Kosina <jkosina@suse.cz>2013-10-30 14:13:29 +0100
commit08072dde333c2f09114a01b0bd32be52ecce195b (patch)
tree9f6841827abd53f5445052951ff2b1a64a925bb8 /drivers/hid/hid-wiimote.h
parent0abda6fa81dced031e3df31ac29bfb253549c2d1 (diff)
HID: wiimote: add pro-controller analog stick calibration
The analog sticks of the pro-controller might report slightly off values. To guarantee a uniform setup, we now calibrate analog-stick values during pro-controller setup. Unfortunately, the pro-controller fails during normal EEPROM reads and I couldn't figure out whether there are any calibration values stored on the device. Therefore, we now use the first values reported by the device (iff they are not _way_ off, which would indicate movement) to initialize the calibration values. To allow users to change this calibration data, we provide a pro_calib sysfs attribute. We also change the "flat" values so user-space correctly smoothes our data. It makes slightly off zero-positions less visible while still guaranteeing highly precise movement reports. Note that the pro controller reports zero-positions in a quite huge range (at least: -100 to +100). Reported-by: Rafael Brune <mail@rbrune.de> Tested-by: Rafael Brune <mail@rbrune.de> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-wiimote.h')
-rw-r--r--drivers/hid/hid-wiimote.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hid/hid-wiimote.h b/drivers/hid/hid-wiimote.h
index 75db0c400037..03065f1917fc 100644
--- a/drivers/hid/hid-wiimote.h
+++ b/drivers/hid/hid-wiimote.h
@@ -46,6 +46,7 @@
#define WIIPROTO_FLAG_DRM_LOCKED 0x8000
#define WIIPROTO_FLAG_BUILTIN_MP 0x010000
#define WIIPROTO_FLAG_NO_MP 0x020000
+#define WIIPROTO_FLAG_PRO_CALIB_DONE 0x040000
#define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \
WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4)
@@ -135,6 +136,7 @@ struct wiimote_state {
/* calibration/cache data */
__u16 calib_bboard[4][3];
+ __s16 calib_pro_sticks[4];
__u8 cache_rumble;
};