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HID: wiimote: Add status request 

The wiimote does not send status reports continuously so this adds a helper
function to request a status report and parses the battery charge level.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
David Herrmann 2011-09-06 13:50:38 +02:00 committed by Jiri Kosina
parent 0370d7cb30
commit e3979a9189
1 changed files with 18 additions and 0 deletions
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18
drivers/hid/hid-wiimote.c
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@ -41,6 +41,7 @@ struct wiimote_state {
__u32 opt;
/* results of synchronous requests */
__u8 cmd_battery;
__u8 cmd_err;
};
@ -83,6 +84,7 @@ enum wiiproto_reqs {
WIIPROTO_REQ_LED = 0x11,
WIIPROTO_REQ_DRM = 0x12,
WIIPROTO_REQ_IR1 = 0x13,
WIIPROTO_REQ_SREQ = 0x15,
WIIPROTO_REQ_WMEM = 0x16,
WIIPROTO_REQ_RMEM = 0x17,
WIIPROTO_REQ_IR2 = 0x1a,
@ -354,6 +356,17 @@ static void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
wiimote_queue(wdata, cmd, sizeof(cmd));
}
static void wiiproto_req_status(struct wiimote_data *wdata)
{
__u8 cmd[2];
cmd[0] = WIIPROTO_REQ_SREQ;
cmd[1] = 0;
wiiproto_keep_rumble(wdata, &cmd[1]);
wiimote_queue(wdata, cmd, sizeof(cmd));
}
static void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
{
accel = !!accel;
@ -805,6 +818,11 @@ static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
/* on status reports the drm is reset so we need to resend the drm */
wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0)) {
wdata->state.cmd_battery = payload[5];
wiimote_cmd_complete(wdata);
}
}
static void handler_data(struct wiimote_data *wdata, const __u8 *payload)