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Commit c49fcdde authored by Sean Young's avatar Sean Young Committed by Mauro Carvalho Chehab
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[media] redrat3: enable carrier reports using wideband receiver 



The wideband receiver is a little awkward on the redrat3. Data arrives
on a different endpoint, and the learning command must be reissued
every time data is learned.

Signed-off-by: default avatarSean Young <sean@mess.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 8a21ec9b

drivers/media/rc/redrat3.c

+140 −46
Original line number Diff line number Diff line
@@ -81,6 +81,8 @@ 
#define RR3_RC_DET_ENABLE	0xbb

/* Stop capture with the RC receiver */

#define RR3_RC_DET_DISABLE	0xbc

/* Start capture with the wideband receiver */

#define RR3_MODSIG_CAPTURE     0xb2

/* Return the status of RC detector capture */

#define RR3_RC_DET_STATUS	0xbd

/* Reset redrat */
@@ -105,8 +107,10 @@ 
#define RR3_CLK_PER_COUNT	12

/* (RR3_CLK / RR3_CLK_PER_COUNT) */

#define RR3_CLK_CONV_FACTOR	2000000

/* USB bulk-in IR data endpoint address */

#define RR3_BULK_IN_EP_ADDR	0x82

/* USB bulk-in wideband IR data endpoint address */

#define RR3_WIDE_IN_EP_ADDR	0x81

/* USB bulk-in narrowband IR data endpoint address */

#define RR3_NARROW_IN_EP_ADDR	0x82



/* Size of the fixed-length portion of the signal */

#define RR3_DRIVER_MAXLENS	128
@@ -207,15 +211,22 @@ struct redrat3_dev { 
	struct urb *flash_urb;

	u8 flash_in_buf;



	/* learning */

	bool wideband;

	struct usb_ctrlrequest learn_control;

	struct urb *learn_urb;

	u8 learn_buf;



	/* save off the usb device pointer */

	struct usb_device *udev;



	/* the receive endpoint */

	struct usb_endpoint_descriptor *ep_in;

	struct usb_endpoint_descriptor *ep_narrow;

	/* the buffer to receive data */

	void *bulk_in_buf;

	/* urb used to read ir data */

	struct urb *read_urb;

	struct urb *narrow_urb;

	struct urb *wide_urb;



	/* the send endpoint */

	struct usb_endpoint_descriptor *ep_out;
@@ -236,23 +247,6 @@ struct redrat3_dev { 
	char phys[64];

};



/*

 * redrat3_issue_async

 *

 *  Issues an async read to the ir data in port..

 *  sets the callback to be redrat3_handle_async

 */

static void redrat3_issue_async(struct redrat3_dev *rr3)

{

	int res;



	res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC);

	if (res)

		dev_dbg(rr3->dev,

			"%s: receive request FAILED! (res %d, len %d)\n",

			__func__, res, rr3->read_urb->transfer_buffer_length);

}



static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code)

{

	if (!rr3->transmitting && (code != 0x40))
@@ -367,6 +361,14 @@ static void redrat3_process_ir_data(struct redrat3_dev *rr3) 


	mod_freq = redrat3_val_to_mod_freq(&rr3->irdata);

	dev_dbg(dev, "Got mod_freq of %u\n", mod_freq);

	if (mod_freq && rr3->wideband) {

		DEFINE_IR_RAW_EVENT(ev);



		ev.carrier_report = 1;

		ev.carrier = mod_freq;



		ir_raw_event_store(rr3->rc, &ev);

	}



	/* process each rr3 encoded byte into an int */

	sig_size = be16_to_cpu(rr3->irdata.sig_size);
@@ -449,19 +451,31 @@ static int redrat3_enable_detector(struct redrat3_dev *rr3) 
		return -EIO;

	}



	redrat3_issue_async(rr3);

	ret = usb_submit_urb(rr3->narrow_urb, GFP_KERNEL);

	if (ret) {

		dev_err(rr3->dev, "narrow band urb failed: %d", ret);

		return ret;

	}



	return 0;

	ret = usb_submit_urb(rr3->wide_urb, GFP_KERNEL);

	if (ret)

		dev_err(rr3->dev, "wide band urb failed: %d", ret);



	return ret;

}



static inline void redrat3_delete(struct redrat3_dev *rr3,

				  struct usb_device *udev)

{

	usb_kill_urb(rr3->read_urb);

	usb_kill_urb(rr3->narrow_urb);

	usb_kill_urb(rr3->wide_urb);

	usb_kill_urb(rr3->flash_urb);

	usb_free_urb(rr3->read_urb);

	usb_kill_urb(rr3->learn_urb);

	usb_free_urb(rr3->narrow_urb);

	usb_free_urb(rr3->wide_urb);

	usb_free_urb(rr3->flash_urb);

	usb_free_coherent(udev, le16_to_cpu(rr3->ep_in->wMaxPacketSize),

	usb_free_urb(rr3->learn_urb);

	usb_free_coherent(udev, le16_to_cpu(rr3->ep_narrow->wMaxPacketSize),

			  rr3->bulk_in_buf, rr3->dma_in);



	kfree(rr3);
@@ -694,9 +708,19 @@ static void redrat3_handle_async(struct urb *urb) 
	switch (urb->status) {

	case 0:

		ret = redrat3_get_ir_data(rr3, urb->actual_length);

		if (!ret && rr3->wideband && !rr3->learn_urb->hcpriv) {

			ret = usb_submit_urb(rr3->learn_urb, GFP_ATOMIC);

			if (ret)

				dev_err(rr3->dev, "Failed to submit learning urb: %d",

									ret);

		}



		if (!ret) {

			/* no error, prepare to read more */

			redrat3_issue_async(rr3);

			ret = usb_submit_urb(urb, GFP_ATOMIC);

			if (ret)

				dev_err(rr3->dev, "Failed to resubmit urb: %d",

									ret);

		}

		break;
@@ -856,6 +880,42 @@ static void redrat3_brightness_set(struct led_classdev *led_dev, enum 
	}

}



static int redrat3_wideband_receiver(struct rc_dev *rcdev, int enable)

{

	struct redrat3_dev *rr3 = rcdev->priv;

	int ret = 0;



	rr3->wideband = enable != 0;



	if (enable) {

		ret = usb_submit_urb(rr3->learn_urb, GFP_KERNEL);

		if (ret)

			dev_err(rr3->dev, "Failed to submit learning urb: %d",

									ret);

	}



	return ret;

}



static void redrat3_learn_complete(struct urb *urb)

{

	struct redrat3_dev *rr3 = urb->context;



	switch (urb->status) {

	case 0:

		break;

	case -ECONNRESET:

	case -ENOENT:

	case -ESHUTDOWN:

		usb_unlink_urb(urb);

		return;

	case -EPIPE:

	default:

		dev_err(rr3->dev, "Error: learn urb status = %d", urb->status);

		break;

	}

}



static void redrat3_led_complete(struct urb *urb)

{

	struct redrat3_dev *rr3 = urb->context;
@@ -908,6 +968,7 @@ static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) 
	rc->s_timeout = redrat3_set_timeout;

	rc->tx_ir = redrat3_transmit_ir;

	rc->s_tx_carrier = redrat3_set_tx_carrier;

	rc->s_carrier_report = redrat3_wideband_receiver;

	rc->driver_name = DRIVER_NAME;

	rc->rx_resolution = US_TO_NS(2);

	rc->map_name = RC_MAP_HAUPPAUGE;
@@ -933,7 +994,8 @@ static int redrat3_dev_probe(struct usb_interface *intf, 
	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_narrow = NULL;

	struct usb_endpoint_descriptor *ep_wide = NULL;

	struct usb_endpoint_descriptor *ep_out = NULL;

	u8 addr, attrs;

	int pipe, i;
@@ -947,15 +1009,16 @@ static int redrat3_dev_probe(struct usb_interface *intf, 
		addr = ep->bEndpointAddress;

		attrs = ep->bmAttributes;



		if ((ep_in == NULL) &&

		    ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) &&

		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 other data... */

			if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR)

				ep_in = ep;

			/* 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) &&
@@ -968,8 +1031,8 @@ static int redrat3_dev_probe(struct usb_interface *intf, 
		}

	}



	if (!ep_in || !ep_out) {

		dev_err(dev, "Couldn't find both in and out endpoints\n");

	if (!ep_narrow || !ep_out || !ep_wide) {

		dev_err(dev, "Couldn't find all endpoints\n");

		retval = -ENODEV;

		goto no_endpoints;

	}
@@ -980,25 +1043,38 @@ static int redrat3_dev_probe(struct usb_interface *intf, 
		goto no_endpoints;



	rr3->dev = &intf->dev;

	rr3->ep_in = ep_in;

	rr3->ep_narrow = ep_narrow;

	rr3->ep_out = ep_out;

	rr3->udev = udev;



	/* set up bulk-in endpoint */

	rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL);

	if (!rr3->read_urb)

	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_in->wMaxPacketSize), GFP_KERNEL, &rr3->dma_in);

		le16_to_cpu(ep_narrow->wMaxPacketSize),

		GFP_KERNEL, &rr3->dma_in);

	if (!rr3->bulk_in_buf)

		goto redrat_free;



	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->read_urb->transfer_dma = rr3->dma_in;

	rr3->read_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

	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);
@@ -1011,6 +1087,21 @@ static int redrat3_dev_probe(struct usb_interface *intf, 
	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;
@@ -1070,7 +1161,8 @@ static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message) 
	struct redrat3_dev *rr3 = usb_get_intfdata(intf);



	led_classdev_suspend(&rr3->led);

	usb_kill_urb(rr3->read_urb);

	usb_kill_urb(rr3->narrow_urb);

	usb_kill_urb(rr3->wide_urb);

	usb_kill_urb(rr3->flash_urb);

	return 0;

}
@@ -1079,7 +1171,9 @@ static int redrat3_dev_resume(struct usb_interface *intf) 
{

	struct redrat3_dev *rr3 = usb_get_intfdata(intf);



	if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC))

	if (usb_submit_urb(rr3->narrow_urb, GFP_ATOMIC))

		return -EIO;

	if (usb_submit_urb(rr3->wide_urb, GFP_ATOMIC))

		return -EIO;

	led_classdev_resume(&rr3->led);

	return 0;