media/rc/iguanair.c

79 static void process_ir_data(struct iguanair *ir, unsigned len)
81 	if (len >= 4 && ir->buf_in[0] == 0 && ir->buf_in[1] == 0) {
82 		switch (ir->buf_in[3]) {
85 				ir->version = (ir->buf_in[5] << 8) |
86 							ir->buf_in[4];
87 				complete(&ir->completion);
92 				ir->bufsize = ir->buf_in[4];
93 				complete(&ir->completion);
98 				ir->cycle_overhead = ir->buf_in[5];
99 				complete(&ir->completion);
103 			ir->tx_overflow = true;
108 			complete(&ir->completion);
111 			dev_warn(ir->dev, "receive overflow\n");
112 			ir_raw_event_overflow(ir->rc);
115 			dev_warn(ir->dev, "control code %02x received\n",
116 							ir->buf_in[3]);
125 			if (ir->buf_in[i] == 0x80) {
129 				rawir.pulse = (ir->buf_in[i] & 0x80) == 0;
130 				rawir.duration = ((ir->buf_in[i] & 0x7f) + 1) *
134 			if (ir_raw_event_store_with_filter(ir->rc, &rawir))
139 			ir_raw_event_handle(ir->rc);
145 	struct iguanair *ir;
151 	ir = urb->context;
152 	if (!ir)
157 		process_ir_data(ir, urb->actual_length);
165 		dev_dbg(ir->dev, "Error: urb status = %d\n", urb->status);
171 		dev_warn(ir->dev, "failed to resubmit urb: %d\n", rc);
176 	struct iguanair *ir = urb->context;
179 		dev_dbg(ir->dev, "Error: out urb status = %d\n", urb->status);
182 	if (urb->status == 0 && ir->packet->header.cmd == CMD_NOP)
183 		complete(&ir->completion);
186 static int iguanair_send(struct iguanair *ir, unsigned size)
190 	reinit_completion(&ir->completion);
192 	ir->urb_out->transfer_buffer_length = size;
193 	rc = usb_submit_urb(ir->urb_out, GFP_KERNEL);
197 	if (wait_for_completion_timeout(&ir->completion, TIMEOUT) == 0)
203 static int iguanair_get_features(struct iguanair *ir)
212 	ir->packet->header.start = 0;
213 	ir->packet->header.direction = DIR_OUT;
214 	ir->packet->header.cmd = CMD_NOP;
215 	iguanair_send(ir, sizeof(ir->packet->header));
217 	ir->packet->header.cmd = CMD_GET_VERSION;
218 	rc = iguanair_send(ir, sizeof(ir->packet->header));
220 		dev_info(ir->dev, "failed to get version\n");
224 	if (ir->version < 0x205) {
225 		dev_err(ir->dev, "firmware 0x%04x is too old\n", ir->version);
230 	ir->bufsize = 150;
231 	ir->cycle_overhead = 65;
233 	ir->packet->header.cmd = CMD_GET_BUFSIZE;
235 	rc = iguanair_send(ir, sizeof(ir->packet->header));
237 		dev_info(ir->dev, "failed to get buffer size\n");
241 	if (ir->bufsize > BUF_SIZE) {
242 		dev_info(ir->dev, "buffer size %u larger than expected\n",
243 								ir->bufsize);
244 		ir->bufsize = BUF_SIZE;
247 	ir->packet->header.cmd = CMD_GET_FEATURES;
249 	rc = iguanair_send(ir, sizeof(ir->packet->header));
251 		dev_info(ir->dev, "failed to get features\n");
256 static int iguanair_receiver(struct iguanair *ir, bool enable)
258 	ir->packet->header.start = 0;
259 	ir->packet->header.direction = DIR_OUT;
260 	ir->packet->header.cmd = enable ? CMD_RECEIVER_ON : CMD_RECEIVER_OFF;
262 	return iguanair_send(ir, sizeof(ir->packet->header));
273 	struct iguanair *ir = dev->priv;
278 	if (carrier != ir->carrier) {
281 		ir->carrier = carrier;
284 							ir->cycle_overhead;
302 		ir->packet->busy7 = (4 - sevens) * 2;
303 		ir->packet->busy4 = 110 - fours;
311 	struct iguanair *ir = dev->priv;
316 	ir->packet->channels = mask << 4;
323 	struct iguanair *ir = dev->priv;
329 		periods = DIV_ROUND_CLOSEST(txbuf[i] * ir->carrier, 1000000);
332 			if (size >= ir->bufsize) {
336 			ir->packet->payload[size++] = p | ((i & 1) ? 0x80 : 0);
341 	ir->packet->header.start = 0;
342 	ir->packet->header.direction = DIR_OUT;
343 	ir->packet->header.cmd = CMD_SEND;
344 	ir->packet->length = size;
346 	ir->tx_overflow = false;
348 	rc = iguanair_send(ir, sizeof(*ir->packet) + size);
350 	if (rc == 0 && ir->tx_overflow)
359 	struct iguanair *ir = rdev->priv;
362 	rc = iguanair_receiver(ir, true);
364 		ir->receiver_on = true;
371 	struct iguanair *ir = rdev->priv;
374 	rc = iguanair_receiver(ir, false);
375 	ir->receiver_on = false;
377 		dev_warn(ir->dev, "failed to disable receiver: %d\n", rc);
384 	struct iguanair *ir;
393 	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
395 	if (!ir || !rc) {
400 	ir->buf_in = usb_alloc_coherent(udev, MAX_IN_PACKET, GFP_KERNEL,
401 								&ir->dma_in);
402 	ir->packet = usb_alloc_coherent(udev, MAX_OUT_PACKET, GFP_KERNEL,
403 								&ir->dma_out);
404 	ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
405 	ir->urb_out = usb_alloc_urb(0, GFP_KERNEL);
407 	if (!ir->buf_in || !ir->packet || !ir->urb_in || !ir->urb_out ||
414 	ir->rc = rc;
415 	ir->dev = &intf->dev;
416 	ir->udev = udev;
418 	init_completion(&ir->completion);
421 	usb_fill_int_urb(ir->urb_out, udev, pipeout, ir->packet, MAX_OUT_PACKET,
422 						iguanair_irq_out, ir, 1);
423 	ir->urb_out->transfer_dma = ir->dma_out;
424 	ir->urb_out->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
427 	usb_fill_int_urb(ir->urb_in, udev, pipein, ir->buf_in, MAX_IN_PACKET,
428 							 iguanair_rx, ir, 1);
429 	ir->urb_in->transfer_dma = ir->dma_in;
430 	ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
432 	ret = usb_submit_urb(ir->urb_in, GFP_KERNEL);
438 	ret = iguanair_get_features(ir);
442 	snprintf(ir->name, sizeof(ir->name),
443 		"IguanaWorks USB IR Transceiver version 0x%04x", ir->version);
445 	usb_make_path(ir->udev, ir->phys, sizeof(ir->phys));
447 	rc->device_name = ir->name;
448 	rc->input_phys = ir->phys;
449 	usb_to_input_id(ir->udev, &rc->input_id);
452 	rc->priv = ir;
474 	usb_set_intfdata(intf, ir);
478 	usb_kill_urb(ir->urb_in);
479 	usb_kill_urb(ir->urb_out);
481 	if (ir) {
482 		usb_free_urb(ir->urb_in);
483 		usb_free_urb(ir->urb_out);
484 		usb_free_coherent(udev, MAX_IN_PACKET, ir->buf_in, ir->dma_in);
485 		usb_free_coherent(udev, MAX_OUT_PACKET, ir->packet,
486 								ir->dma_out);
489 	kfree(ir);
495 	struct iguanair *ir = usb_get_intfdata(intf);
497 	rc_unregister_device(ir->rc);
499 	usb_kill_urb(ir->urb_in);
500 	usb_kill_urb(ir->urb_out);
501 	usb_free_urb(ir->urb_in);
502 	usb_free_urb(ir->urb_out);
503 	usb_free_coherent(ir->udev, MAX_IN_PACKET, ir->buf_in, ir->dma_in);
504 	usb_free_coherent(ir->udev, MAX_OUT_PACKET, ir->packet, ir->dma_out);
505 	kfree(ir);
510 	struct iguanair *ir = usb_get_intfdata(intf);
513 	if (ir->receiver_on) {
514 		rc = iguanair_receiver(ir, false);
516 			dev_warn(ir->dev, "failed to disable receiver for suspend\n");
519 	usb_kill_urb(ir->urb_in);
520 	usb_kill_urb(ir->urb_out);
527 	struct iguanair *ir = usb_get_intfdata(intf);
530 	rc = usb_submit_urb(ir->urb_in, GFP_KERNEL);
534 	if (ir->receiver_on) {
535 		rc = iguanair_receiver(ir, true);
537 			dev_warn(ir->dev, "failed to enable receiver after resume\n");