/* callback function from USB when async USB request has completed */
static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs)
{
struct redrat3_dev *rr3;
if (!urb)
return;
rr3 = urb->context;
if (!rr3) {
pr_err("%s called with invalid context!\n", __func__);
usb_unlink_urb(urb);
return;
}
rr3_ftr(rr3->dev, "Entering %s\n", __func__);
if (!rr3->det_enabled) {
rr3_dbg(rr3->dev, "received a read callback but detector "
"disabled - ignoring\n");
return;
}
switch (urb->status) {
case 0:
redrat3_get_ir_data(rr3, urb->actual_length);
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
usb_unlink_urb(urb);
return;
case -EPIPE:
default:
dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
rr3->bytes_read = 0;
rr3->pktlen = 0;
rr3->pkttype = 0;
break;
}
if (!rr3->transmitting)
redrat3_issue_async(rr3);
else
rr3_dbg(rr3->dev, "IR transmit in progress\n");
}
static void redrat3_handle_async(struct urb *urb, struct pt_regs *regs)
{
struct redrat3_dev *rr3;
int ret;
if (!urb)
return;
rr3 = urb->context;
if (!rr3) {
pr_err("%s called with invalid context!\n", __func__);
usb_unlink_urb(urb);
return;
}
rr3_ftr(rr3->dev, "Entering %s\n", __func__);
switch (urb->status) {
case 0:
ret = redrat3_get_ir_data(rr3, urb->actual_length);
if (!ret) {
/* */
redrat3_issue_async(rr3);
}
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
usb_unlink_urb(urb);
return;
case -EPIPE:
default:
dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status);
rr3->bytes_read = 0;
rr3->pktlen = 0;
rr3->pkttype = 0;
break;
}
}
/* Enables the long range detector and starts async receive */
static int redrat3_enable_detector(struct redrat3_dev *rr3)
{
struct device *dev = rr3->dev;
u8 ret;
rr3_ftr(dev, "Entering %s\n", __func__);
ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3);
if (ret != 0)
dev_dbg(dev, "%s: unexpected ret of %d\n",
__func__, ret);
ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3);
if (ret != 1) {
dev_err(dev, "%s: detector status: %d, should be 1\n",
__func__, ret);
return -EIO;
}
redrat3_issue_async(rr3);
return 0;
}
