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HID: wiimote: Add status and return request handlers 

The wiimote resets the current drm when an extension is plugged in.
Fortunately, it also sends a status report in this situation so we just
reset the drm on every status report to keep the drm consistent.

Also handle return reports from the wiimote which indicate success and
failure of requests that we've sent.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
David Herrmann 2011-08-17 11:43:24 +02:00 committed by Jiri Kosina
parent 2cb5e4bc53
commit c87019e41d
1 changed files with 24 additions and 0 deletions
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24
drivers/hid/hid-wiimote.c
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@ -60,6 +60,8 @@ enum wiiproto_reqs {
WIIPROTO_REQ_NULL = 0x0,
WIIPROTO_REQ_LED = 0x11,
WIIPROTO_REQ_DRM = 0x12,
WIIPROTO_REQ_STATUS = 0x20,
WIIPROTO_REQ_RETURN = 0x22,
WIIPROTO_REQ_DRM_K = 0x30,
};
@ -313,6 +315,26 @@ static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
input_sync(wdata->input);
}
static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
{
handler_keys(wdata, payload);
/* on status reports the drm is reset so we need to resend the drm */
wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
}
static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
{
__u8 err = payload[3];
__u8 cmd = payload[2];
handler_keys(wdata, payload);
if (err)
hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
cmd);
}
struct wiiproto_handler {
__u8 id;
size_t size;
@ -320,6 +342,8 @@ struct wiiproto_handler {
};
static struct wiiproto_handler handlers[] = {
{ .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
{ .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
{ .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
{ .id = 0 }
};