static int __devinit redrat3_dev_probe(struct usb_interface *intf,
				       const struct usb_device_id *id)
{
	struct usb_device *udev = interface_to_usbdev(intf);
	struct device *dev = &intf->dev;
	struct usb_host_interface *uhi;
	struct redrat3_dev *rr3;
	struct usb_endpoint_descriptor *ep;
	struct usb_endpoint_descriptor *ep_in = NULL;
	struct usb_endpoint_descriptor *ep_out = NULL;
	u8 addr, attrs;
	int pipe, i;
	int retval = -ENOMEM;

	rr3_ftr(dev, "%s called\n", __func__);

	uhi = intf->cur_altsetting;

	/*                                         */
	for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
		ep = &uhi->endpoint[i].desc;
		addr = ep->bEndpointAddress;
		attrs = ep->bmAttributes;

		if ((ep_in == NULL) &&
		    ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
		    ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
		     USB_ENDPOINT_XFER_BULK)) {
			rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
				ep->bEndpointAddress);
			/*                                                  */
			if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR)
				ep_in = ep;
		}

		if ((ep_out == NULL) &&
		    ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
		    ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
		     USB_ENDPOINT_XFER_BULK)) {
			rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
				ep->bEndpointAddress);
			ep_out = ep;
		}
	}

	if (!ep_in || !ep_out) {
		dev_err(dev, "Couldn't find both in and out endpoints\n");
		retval = -ENODEV;
		goto no_endpoints;
	}

	/*                                                        */
	rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
	if (rr3 == NULL) {
		dev_err(dev, "Memory allocation failure\n");
		goto no_endpoints;
	}

	rr3->dev = &intf->dev;

	/*                         */
	rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!rr3->read_urb) {
		dev_err(dev, "Read urb allocation failure\n");
		goto error;
	}

	rr3->ep_in = ep_in;
	rr3->bulk_in_buf = usb_alloc_coherent(udev, ep_in->wMaxPacketSize,
					      GFP_ATOMIC, &rr3->dma_in);
	if (!rr3->bulk_in_buf) {
		dev_err(dev, "Read buffer allocation failure\n");
		goto error;
	}

	pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress);
	usb_fill_bulk_urb(rr3->read_urb, udev, pipe,
			  rr3->bulk_in_buf, ep_in->wMaxPacketSize,
			  (usb_complete_t)redrat3_handle_async, rr3);

	/*                         */
	rr3->write_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!rr3->write_urb) {
		dev_err(dev, "Write urb allocation failure\n");
		goto error;
	}

	rr3->ep_out = ep_out;
	rr3->bulk_out_buf = usb_alloc_coherent(udev, ep_out->wMaxPacketSize,
					       GFP_ATOMIC, &rr3->dma_out);
	if (!rr3->bulk_out_buf) {
		dev_err(dev, "Write buffer allocation failure\n");
		goto error;
	}

	pipe = usb_sndbulkpipe(udev, ep_out->bEndpointAddress);
	usb_fill_bulk_urb(rr3->write_urb, udev, pipe,
			  rr3->bulk_out_buf, ep_out->wMaxPacketSize,
			  (usb_complete_t)redrat3_write_bulk_callback, rr3);

	mutex_init(&rr3->lock);
	rr3->udev = udev;

	redrat3_reset(rr3);
	redrat3_get_firmware_rev(rr3);

	/*                             */
	retval = redrat3_enable_detector(rr3);
	if (retval < 0)
		goto error;

	/*                                                                  */
	rr3->hw_timeout = redrat3_get_timeout(rr3);

	/*                                                                */
	rr3->carrier = 38000;

	rr3->rc = redrat3_init_rc_dev(rr3);
	if (!rr3->rc)
		goto error;

	setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3);

	/*                                                */
	usb_set_intfdata(intf, rr3);

	rr3_ftr(dev, "Exiting %s\n", __func__);
	return 0;

error:
	redrat3_delete(rr3, rr3->udev);

no_endpoints:
	dev_err(dev, "%s: retval = %x", __func__, retval);

	return retval;
}
Example #2
0
static int redrat3_transmit_ir(struct rc_dev *rcdev, int *txbuf, u32 n)
{
	struct redrat3_dev *rr3 = rcdev->priv;
	struct device *dev = rr3->dev;
	struct redrat3_signal_header header;
	int i, j, count, ret, ret_len, offset;
	int lencheck, cur_sample_len, pipe;
	char *buffer = NULL, *sigdata = NULL;
	int *sample_lens = NULL;
	u32 tmpi;
	u16 tmps;
	u8 *datap;
	u8 curlencheck = 0;
	u16 *lengths_ptr;
	int sendbuf_len;

	rr3_ftr(dev, "Entering %s\n", __func__);

	if (rr3->transmitting) {
		dev_warn(dev, "%s: transmitter already in use\n", __func__);
		return -EAGAIN;
	}

	count = n / sizeof(int);
	if (count > (RR3_DRIVER_MAXLENS * 2))
		return -EINVAL;

	rr3->transmitting = true;

	redrat3_disable_detector(rr3);

	if (rr3->det_enabled) {
		dev_err(dev, "%s: cannot tx while rx is enabled\n", __func__);
		ret = -EIO;
		goto out;
	}

	sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL);
	if (!sample_lens) {
		ret = -ENOMEM;
		goto out;
	}

	for (i = 0; i < count; i++) {
		for (lencheck = 0; lencheck < curlencheck; lencheck++) {
			cur_sample_len = redrat3_us_to_len(txbuf[i]);
			if (sample_lens[lencheck] == cur_sample_len)
				break;
		}
		if (lencheck == curlencheck) {
			cur_sample_len = redrat3_us_to_len(txbuf[i]);
			rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n",
				i, txbuf[i], curlencheck, cur_sample_len);
			if (curlencheck < 255) {
				/* now convert the value to a proper
				 * rr3 value.. */
				sample_lens[curlencheck] = cur_sample_len;
				curlencheck++;
			} else {
				dev_err(dev, "signal too long\n");
				ret = -EINVAL;
				goto out;
			}
		}
	}

	sigdata = kzalloc((count + RR3_TX_TRAILER_LEN), GFP_KERNEL);
	if (!sigdata) {
		ret = -ENOMEM;
		goto out;
	}

	sigdata[count] = RR3_END_OF_SIGNAL;
	sigdata[count + 1] = RR3_END_OF_SIGNAL;
	for (i = 0; i < count; i++) {
		for (j = 0; j < curlencheck; j++) {
			if (sample_lens[j] == redrat3_us_to_len(txbuf[i]))
				sigdata[i] = j;
		}
	}

	offset = RR3_TX_HEADER_OFFSET;
	sendbuf_len = RR3_HEADER_LENGTH + (sizeof(u16) * RR3_DRIVER_MAXLENS)
			+ count + RR3_TX_TRAILER_LEN + offset;

	buffer = kzalloc(sendbuf_len, GFP_KERNEL);
	if (!buffer) {
		ret = -ENOMEM;
		goto out;
	}

	/* fill in our packet header */
	header.length = sendbuf_len - offset;
	header.transfer_type = RR3_MOD_SIGNAL_OUT;
	header.pause = redrat3_len_to_us(100);
	header.mod_freq_count = mod_freq_to_val(rr3->carrier);
	header.no_periods = 0; /* n/a to transmit */
	header.max_lengths = RR3_DRIVER_MAXLENS;
	header.no_lengths = curlencheck;
	header.max_sig_size = RR3_MAX_SIG_SIZE;
	header.sig_size = count + RR3_TX_TRAILER_LEN;
	/* we currently rely on repeat handling in the IR encoding source */
	header.no_repeats = 0;

	tmps = cpu_to_be16(header.length);
	memcpy(buffer, &tmps, 2);

	tmps = cpu_to_be16(header.transfer_type);
	memcpy(buffer + 2, &tmps, 2);

	tmpi = cpu_to_be32(header.pause);
	memcpy(buffer + offset, &tmpi, sizeof(tmpi));

	tmps = cpu_to_be16(header.mod_freq_count);
	memcpy(buffer + offset + RR3_FREQ_COUNT_OFFSET, &tmps, 2);

	buffer[offset + RR3_NUM_LENGTHS_OFFSET] = header.no_lengths;

	tmps = cpu_to_be16(header.sig_size);
	memcpy(buffer + offset + RR3_NUM_SIGS_OFFSET, &tmps, 2);

	buffer[offset + RR3_REPEATS_OFFSET] = header.no_repeats;

	lengths_ptr = (u16 *)(buffer + offset + RR3_HEADER_LENGTH);
	for (i = 0; i < curlencheck; ++i)
		lengths_ptr[i] = cpu_to_be16(sample_lens[i]);

	datap = (u8 *)(buffer + offset + RR3_HEADER_LENGTH +
			    (sizeof(u16) * RR3_DRIVER_MAXLENS));
	memcpy(datap, sigdata, (count + RR3_TX_TRAILER_LEN));

	if (debug) {
		redrat3_dump_signal_header(&header);
		redrat3_dump_signal_data(buffer, header.sig_size);
	}

	pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress);
	tmps = usb_bulk_msg(rr3->udev, pipe, buffer,
			    sendbuf_len, &ret_len, 10 * HZ);
	rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, tmps);

	/* now tell the hardware to transmit what we sent it */
	pipe = usb_rcvctrlpipe(rr3->udev, 0);
	ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL,
			      USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
			      0, 0, buffer, 2, HZ * 10);

	if (ret < 0)
		dev_err(dev, "Error: control msg send failed, rc %d\n", ret);
	else
		ret = n;

out:
	kfree(sample_lens);
	kfree(buffer);
	kfree(sigdata);

	rr3->transmitting = false;

	redrat3_enable_detector(rr3);

	return ret;
}
static int redrat3_dev_probe(struct usb_interface *intf,
                             const struct usb_device_id *id)
{
    struct usb_device *udev = interface_to_usbdev(intf);
    struct device *dev = &intf->dev;
    struct usb_host_interface *uhi;
    struct redrat3_dev *rr3;
    struct usb_endpoint_descriptor *ep;
    struct usb_endpoint_descriptor *ep_in = NULL;
    struct usb_endpoint_descriptor *ep_out = NULL;
    u8 addr, attrs;
    int pipe, i;
    int retval = -ENOMEM;

    rr3_ftr(dev, "%s called\n", __func__);

    uhi = intf->cur_altsetting;

    /* find our bulk-in and bulk-out endpoints */
    for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
        ep = &uhi->endpoint[i].desc;
        addr = ep->bEndpointAddress;
        attrs = ep->bmAttributes;

        if ((ep_in == NULL) &&
                ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
                ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
                 USB_ENDPOINT_XFER_BULK)) {
            rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
                    ep->bEndpointAddress);
            /* data comes in on 0x82, 0x81 is for other data... */
            if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR)
                ep_in = ep;
        }

        if ((ep_out == NULL) &&
                ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
                ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
                 USB_ENDPOINT_XFER_BULK)) {
            rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
                    ep->bEndpointAddress);
            ep_out = ep;
        }
    }

    if (!ep_in || !ep_out) {
        dev_err(dev, "Couldn't find both in and out endpoints\n");
        retval = -ENODEV;
        goto no_endpoints;
    }

    /* allocate memory for our device state and initialize it */
    rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
    if (rr3 == NULL) {
        dev_err(dev, "Memory allocation failure\n");
        goto no_endpoints;
    }

    rr3->dev = &intf->dev;

    /* set up bulk-in endpoint */
    rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);
    if (!rr3->read_urb) {
        dev_err(dev, "Read urb allocation failure\n");
        goto error;
    }

    rr3->ep_in = ep_in;
    rr3->bulk_in_buf = usb_alloc_coherent(udev,
                                          le16_to_cpu(ep_in->wMaxPacketSize), GFP_ATOMIC, &rr3->dma_in);
    if (!rr3->bulk_in_buf) {
        dev_err(dev, "Read buffer allocation failure\n");
        goto error;
    }

    pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress);
    usb_fill_bulk_urb(rr3->read_urb, udev, pipe, rr3->bulk_in_buf,
                      le16_to_cpu(ep_in->wMaxPacketSize), redrat3_handle_async, rr3);

    rr3->ep_out = ep_out;
    rr3->udev = udev;

    redrat3_reset(rr3);
    redrat3_get_firmware_rev(rr3);

    /* might be all we need to do? */
    retval = redrat3_enable_detector(rr3);
    if (retval < 0)
        goto error;

    /* store current hardware timeout, in us, will use for kfifo resets */
    rr3->hw_timeout = redrat3_get_timeout(rr3);

    /* default.. will get overridden by any sends with a freq defined */
    rr3->carrier = 38000;

    /* led control */
    rr3->led.name = "redrat3:red:feedback";
    rr3->led.default_trigger = "rc-feedback";
    rr3->led.brightness_set = redrat3_brightness_set;
    retval = led_classdev_register(&intf->dev, &rr3->led);
    if (retval)
        goto error;

    atomic_set(&rr3->flash, 0);
    rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL);
    if (!rr3->flash_urb) {
        retval = -ENOMEM;
        goto led_free_error;
    }

    /* setup packet is 'c0 b9 0000 0000 0001' */
    rr3->flash_control.bRequestType = 0xc0;
    rr3->flash_control.bRequest = RR3_BLINK_LED;
    rr3->flash_control.wLength = cpu_to_le16(1);

    usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0),
                         (unsigned char *)&rr3->flash_control,
                         &rr3->flash_in_buf, sizeof(rr3->flash_in_buf),
                         redrat3_led_complete, rr3);

    rr3->rc = redrat3_init_rc_dev(rr3);
    if (!rr3->rc) {
        retval = -ENOMEM;
        goto led_free_error;
    }
    setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3);

    /* we can register the device now, as it is ready */
    usb_set_intfdata(intf, rr3);

    rr3_ftr(dev, "Exiting %s\n", __func__);
    return 0;

led_free_error:
    led_classdev_unregister(&rr3->led);
error:
    redrat3_delete(rr3, rr3->udev);

no_endpoints:
    dev_err(dev, "%s: retval = %x", __func__, retval);

    return retval;
}
Example #4
0
static int redrat3_dev_probe(struct usb_interface *intf,
			     const struct usb_device_id *id)
{
	struct usb_device *udev = interface_to_usbdev(intf);
	struct device *dev = &intf->dev;
	struct usb_host_interface *uhi;
	struct redrat3_dev *rr3;
	struct usb_endpoint_descriptor *ep;
	struct usb_endpoint_descriptor *ep_narrow = NULL;
	struct usb_endpoint_descriptor *ep_wide = NULL;
	struct usb_endpoint_descriptor *ep_out = NULL;
	u8 addr, attrs;
	int pipe, i;
	int retval = -ENOMEM;

	uhi = intf->cur_altsetting;

	/* find our bulk-in and bulk-out endpoints */
	for (i = 0; i < uhi->desc.bNumEndpoints; ++i) {
		ep = &uhi->endpoint[i].desc;
		addr = ep->bEndpointAddress;
		attrs = ep->bmAttributes;

		if (((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&
		    ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
		     USB_ENDPOINT_XFER_BULK)) {
			dev_dbg(dev, "found bulk-in endpoint at 0x%02x\n",
				ep->bEndpointAddress);
			/* data comes in on 0x82, 0x81 is for learning */
			if (ep->bEndpointAddress == RR3_NARROW_IN_EP_ADDR)
				ep_narrow = ep;
			if (ep->bEndpointAddress == RR3_WIDE_IN_EP_ADDR)
				ep_wide = ep;
		}

		if ((ep_out == NULL) &&
		    ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) &&
		    ((attrs & USB_ENDPOINT_XFERTYPE_MASK) ==
		     USB_ENDPOINT_XFER_BULK)) {
			dev_dbg(dev, "found bulk-out endpoint at 0x%02x\n",
				ep->bEndpointAddress);
			ep_out = ep;
		}
	}

	if (!ep_narrow || !ep_out || !ep_wide) {
		dev_err(dev, "Couldn't find all endpoints\n");
		retval = -ENODEV;
		goto no_endpoints;
	}

	/* allocate memory for our device state and initialize it */
	rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL);
	if (!rr3)
		goto no_endpoints;

	rr3->dev = &intf->dev;
	rr3->ep_narrow = ep_narrow;
	rr3->ep_out = ep_out;
	rr3->udev = udev;

	/* set up bulk-in endpoint */
	rr3->narrow_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!rr3->narrow_urb)
		goto redrat_free;

	rr3->wide_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!rr3->wide_urb)
		goto redrat_free;

	rr3->bulk_in_buf = usb_alloc_coherent(udev,
		le16_to_cpu(ep_narrow->wMaxPacketSize),
		GFP_KERNEL, &rr3->dma_in);
	if (!rr3->bulk_in_buf)
		goto redrat_free;

	pipe = usb_rcvbulkpipe(udev, ep_narrow->bEndpointAddress);
	usb_fill_bulk_urb(rr3->narrow_urb, udev, pipe, rr3->bulk_in_buf,
		le16_to_cpu(ep_narrow->wMaxPacketSize),
		redrat3_handle_async, rr3);
	rr3->narrow_urb->transfer_dma = rr3->dma_in;
	rr3->narrow_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	pipe = usb_rcvbulkpipe(udev, ep_wide->bEndpointAddress);
	usb_fill_bulk_urb(rr3->wide_urb, udev, pipe, rr3->bulk_in_buf,
		le16_to_cpu(ep_narrow->wMaxPacketSize),
		redrat3_handle_async, rr3);
	rr3->wide_urb->transfer_dma = rr3->dma_in;
	rr3->wide_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	redrat3_reset(rr3);
	redrat3_get_firmware_rev(rr3);

	/* default.. will get overridden by any sends with a freq defined */
	rr3->carrier = 38000;

	atomic_set(&rr3->flash, 0);
	rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!rr3->flash_urb)
		goto redrat_free;

	/* learn urb */
	rr3->learn_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!rr3->learn_urb)
		goto redrat_free;

	/* setup packet is 'c0 b2 0000 0000 0001' */
	rr3->learn_control.bRequestType = 0xc0;
	rr3->learn_control.bRequest = RR3_MODSIG_CAPTURE;
	rr3->learn_control.wLength = cpu_to_le16(1);

	usb_fill_control_urb(rr3->learn_urb, udev, usb_rcvctrlpipe(udev, 0),
			(unsigned char *)&rr3->learn_control,
			&rr3->learn_buf, sizeof(rr3->learn_buf),
			redrat3_learn_complete, rr3);

	/* setup packet is 'c0 b9 0000 0000 0001' */
	rr3->flash_control.bRequestType = 0xc0;
	rr3->flash_control.bRequest = RR3_BLINK_LED;
	rr3->flash_control.wLength = cpu_to_le16(1);

	usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0),
			(unsigned char *)&rr3->flash_control,
			&rr3->flash_in_buf, sizeof(rr3->flash_in_buf),
			redrat3_led_complete, rr3);

	/* led control */
	rr3->led.name = "redrat3:red:feedback";
	rr3->led.default_trigger = "rc-feedback";
	rr3->led.brightness_set = redrat3_brightness_set;
	retval = led_classdev_register(&intf->dev, &rr3->led);
	if (retval)
		goto redrat_free;

	rr3->rc = redrat3_init_rc_dev(rr3);
	if (!rr3->rc) {
		retval = -ENOMEM;
		goto led_free;
	}

	/* might be all we need to do? */
	retval = redrat3_enable_detector(rr3);
	if (retval < 0)
		goto led_free;

	/* we can register the device now, as it is ready */
	usb_set_intfdata(intf, rr3);

	return 0;

led_free:
	led_classdev_unregister(&rr3->led);
redrat_free:
	redrat3_delete(rr3, rr3->udev);

no_endpoints:
	return retval;
}