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path: root/drivers/hid/hid-wiimote.c
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Diffstat (limited to 'drivers/hid/hid-wiimote.c')
-rw-r--r--drivers/hid/hid-wiimote.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/hid/hid-wiimote.c b/drivers/hid/hid-wiimote.c
index 4cdaaf6..3a7dec0 100644
--- a/drivers/hid/hid-wiimote.c
+++ b/drivers/hid/hid-wiimote.c
@@ -479,6 +479,50 @@ static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
input_sync(wdata->accel);
}
+#define ir_to_input0(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
+ ABS_HAT0X, ABS_HAT0Y)
+#define ir_to_input1(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
+ ABS_HAT1X, ABS_HAT1Y)
+#define ir_to_input2(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
+ ABS_HAT2X, ABS_HAT2Y)
+#define ir_to_input3(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
+ ABS_HAT3X, ABS_HAT3Y)
+
+static void __ir_to_input(struct wiimote_data *wdata, const __u8 *ir,
+ bool packed, __u8 xid, __u8 yid)
+{
+ __u16 x, y;
+
+ if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
+ return;
+
+ /*
+ * Basic IR data is encoded into 3 bytes. The first two bytes are the
+ * upper 8 bit of the X/Y data, the 3rd byte contains the lower 2 bits
+ * of both.
+ * If data is packed, then the 3rd byte is put first and slightly
+ * reordered. This allows to interleave packed and non-packed data to
+ * have two IR sets in 5 bytes instead of 6.
+ * The resulting 10bit X/Y values are passed to the ABS_HATXY input dev.
+ */
+
+ if (packed) {
+ x = ir[1] << 2;
+ y = ir[2] << 2;
+
+ x |= ir[0] & 0x3;
+ y |= (ir[0] >> 2) & 0x3;
+ } else {
+ x = ir[0] << 2;
+ y = ir[1] << 2;
+
+ x |= (ir[2] >> 4) & 0x3;
+ y |= (ir[2] >> 6) & 0x3;
+ }
+
+ input_report_abs(wdata->ir, xid, x);
+ input_report_abs(wdata->ir, yid, y);
+}
static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
{
@@ -510,6 +554,21 @@ static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
{
handler_keys(wdata, payload);
handler_accel(wdata, payload);
+ ir_to_input0(wdata, &payload[5], false);
+ ir_to_input1(wdata, &payload[8], false);
+ ir_to_input2(wdata, &payload[11], false);
+ ir_to_input3(wdata, &payload[14], false);
+ input_sync(wdata->ir);
+}
+
+static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+ ir_to_input0(wdata, &payload[2], false);
+ ir_to_input1(wdata, &payload[4], true);
+ ir_to_input2(wdata, &payload[7], false);
+ ir_to_input3(wdata, &payload[9], true);
+ input_sync(wdata->ir);
}
static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
@@ -522,6 +581,11 @@ static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
{
handler_keys(wdata, payload);
handler_accel(wdata, payload);
+ ir_to_input0(wdata, &payload[5], false);
+ ir_to_input1(wdata, &payload[7], true);
+ ir_to_input2(wdata, &payload[10], false);
+ ir_to_input3(wdata, &payload[12], true);
+ input_sync(wdata->ir);
}
static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
@@ -531,6 +595,10 @@ static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
wdata->state.accel_split[0] = payload[2];
wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
+
+ ir_to_input0(wdata, &payload[3], false);
+ ir_to_input1(wdata, &payload[12], false);
+ input_sync(wdata->ir);
}
static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
@@ -548,6 +616,10 @@ static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
buf[3] = payload[2];
buf[4] = wdata->state.accel_split[1];
handler_accel(wdata, buf);
+
+ ir_to_input2(wdata, &payload[3], false);
+ ir_to_input3(wdata, &payload[12], false);
+ input_sync(wdata->ir);
}
struct wiiproto_handler {
@@ -563,6 +635,7 @@ static struct wiiproto_handler handlers[] = {
{ .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
{ .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
{ .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
+ { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
{ .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
{ .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
{ .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
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