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Add support for writing to HID devices through the interrupt output pipe.

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Supermicro LCD screen modules seem to not support accessing reports through
the control pipes, but working fine with the interrupt pipes.

Sponsored by:	iXsystems, Inc.
MFC after:	1 week
This commit is contained in:
mav 2012-05-17 18:40:27 +00:00
parent bea78fdeae
commit c53bc2a407
1 changed files with 49 additions and 4 deletions
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53
sys/dev/usb/input/uhid.c
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@ -87,6 +87,7 @@ SYSCTL_INT(_hw_usb_uhid, OID_AUTO, debug, CTLFLAG_RW,
#define UHID_FRAME_NUM 50 /* bytes, frame number */
enum {
UHID_INTR_DT_WR,
UHID_INTR_DT_RD,
UHID_CTRL_DT_WR,
UHID_CTRL_DT_RD,
@ -128,7 +129,8 @@ static device_probe_t uhid_probe;
static device_attach_t uhid_attach;
static device_detach_t uhid_detach;
static usb_callback_t uhid_intr_callback;
static usb_callback_t uhid_intr_write_callback;
static usb_callback_t uhid_intr_read_callback;
static usb_callback_t uhid_write_callback;
static usb_callback_t uhid_read_callback;
@ -152,7 +154,36 @@ static struct usb_fifo_methods uhid_fifo_methods = {
};
static void
uhid_intr_callback(struct usb_xfer *xfer, usb_error_t error)
uhid_intr_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uhid_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
int actlen;
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
case USB_ST_SETUP:
tr_setup:
pc = usbd_xfer_get_frame(xfer, 0);
if (usb_fifo_get_data(sc->sc_fifo.fp[USB_FIFO_TX], pc,
0, usbd_xfer_max_len(xfer), &actlen, 0)) {
usbd_xfer_set_frame_len(xfer, 0, actlen);
usbd_transfer_submit(xfer);
}
return;
default: /* Error */
if (error != USB_ERR_CANCELLED) {
/* try to clear stall first */
usbd_xfer_set_stall(xfer);
goto tr_setup;
}
return;
}
}
static void
uhid_intr_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct uhid_softc *sc = usbd_xfer_softc(xfer);
struct usb_page_cache *pc;
@ -327,13 +358,22 @@ uhid_read_callback(struct usb_xfer *xfer, usb_error_t error)
static const struct usb_config uhid_config[UHID_N_TRANSFER] = {
[UHID_INTR_DT_WR] = {
.type = UE_INTERRUPT,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.flags = {.pipe_bof = 1, },
.bufsize = UHID_BSIZE,
.callback = &uhid_intr_write_callback,
},
[UHID_INTR_DT_RD] = {
.type = UE_INTERRUPT,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
.bufsize = UHID_BSIZE,
.callback = &uhid_intr_callback,
.callback = &uhid_intr_read_callback,
},
[UHID_CTRL_DT_WR] = {
@ -381,7 +421,11 @@ uhid_start_write(struct usb_fifo *fifo)
{
struct uhid_softc *sc = usb_fifo_softc(fifo);
usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_WR]);
if (sc->sc_flags & UHID_FLAG_IMMED) {
usbd_transfer_start(sc->sc_xfer[UHID_CTRL_DT_WR]);
} else {
usbd_transfer_start(sc->sc_xfer[UHID_INTR_DT_WR]);
}
}
static void
@ -390,6 +434,7 @@ uhid_stop_write(struct usb_fifo *fifo)
struct uhid_softc *sc = usb_fifo_softc(fifo);
usbd_transfer_stop(sc->sc_xfer[UHID_CTRL_DT_WR]);
usbd_transfer_stop(sc->sc_xfer[UHID_INTR_DT_WR]);
}
static int