media/rc/streamzap.c

100 static void sz_push(struct streamzap_ir *sz, struct ir_raw_event rawir)
102 	dev_dbg(sz->dev, "Storing %s with duration %u us\n",
104 	ir_raw_event_store_with_filter(sz->rdev, &rawir);
107 static void sz_push_full_pulse(struct streamzap_ir *sz,
115 	sz_push(sz, rawir);
118 static void sz_push_half_pulse(struct streamzap_ir *sz,
121 	sz_push_full_pulse(sz, (value & SZ_PULSE_MASK) >> 4);
124 static void sz_push_full_space(struct streamzap_ir *sz,
132 	sz_push(sz, rawir);
135 static void sz_push_half_space(struct streamzap_ir *sz,
138 	sz_push_full_space(sz, value & SZ_SPACE_MASK);
149 	struct streamzap_ir *sz;
156 	sz = urb->context;
165 		 * sz might already be invalid at this point
167 		dev_err(sz->dev, "urb terminated, status: %d\n", urb->status);
173 	dev_dbg(sz->dev, "%s: received urb, len %d\n", __func__, len);
175 		dev_dbg(sz->dev, "sz->buf_in[%d]: %x\n",
176 			i, (unsigned char)sz->buf_in[i]);
177 		switch (sz->decoder_state) {
179 			if ((sz->buf_in[i] & SZ_PULSE_MASK) ==
181 				sz->decoder_state = FullPulse;
183 			} else if ((sz->buf_in[i] & SZ_SPACE_MASK)
185 				sz_push_half_pulse(sz, sz->buf_in[i]);
186 				sz->decoder_state = FullSpace;
189 				sz_push_half_pulse(sz, sz->buf_in[i]);
190 				sz_push_half_space(sz, sz->buf_in[i]);
194 			sz_push_full_pulse(sz, sz->buf_in[i]);
195 			sz->decoder_state = IgnorePulse;
198 			if (sz->buf_in[i] == SZ_TIMEOUT) {
201 					.duration = sz->rdev->timeout
203 				sz_push(sz, rawir);
205 				sz_push_full_space(sz, sz->buf_in[i]);
207 			sz->decoder_state = PulseSpace;
210 			if ((sz->buf_in[i] & SZ_SPACE_MASK) ==
212 				sz->decoder_state = FullSpace;
215 			sz_push_half_space(sz, sz->buf_in[i]);
216 			sz->decoder_state = PulseSpace;
221 	ir_raw_event_handle(sz->rdev);
225 static struct rc_dev *streamzap_init_rc_dev(struct streamzap_ir *sz,
229 	struct device *dev = sz->dev;
236 	usb_make_path(usbdev, sz->phys, sizeof(sz->phys));
237 	strlcat(sz->phys, "/input0", sizeof(sz->phys));
240 	rdev->input_phys = sz->phys;
243 	rdev->priv = sz;
275 	struct streamzap_ir *sz = NULL;
280 	sz = kzalloc(sizeof(struct streamzap_ir), GFP_KERNEL);
281 	if (!sz)
320 	sz->buf_in = usb_alloc_coherent(usbdev, maxp, GFP_ATOMIC, &sz->dma_in);
321 	if (!sz->buf_in)
324 	sz->urb_in = usb_alloc_urb(0, GFP_KERNEL);
325 	if (!sz->urb_in)
328 	sz->dev = &intf->dev;
329 	sz->buf_in_len = maxp;
331 	sz->rdev = streamzap_init_rc_dev(sz, usbdev);
332 	if (!sz->rdev)
335 	sz->decoder_state = PulseSpace;
337 	sz->rdev->timeout = SZ_TIMEOUT * SZ_RESOLUTION;
341 	sz->min_timeout = SZ_TIMEOUT * SZ_RESOLUTION;
342 	sz->max_timeout = SZ_TIMEOUT * SZ_RESOLUTION;
346 	usb_fill_int_urb(sz->urb_in, usbdev, pipe, sz->buf_in,
347 			 maxp, streamzap_callback, sz, endpoint->bInterval);
348 	sz->urb_in->transfer_dma = sz->dma_in;
349 	sz->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
351 	usb_set_intfdata(intf, sz);
353 	if (usb_submit_urb(sz->urb_in, GFP_ATOMIC))
354 		dev_err(sz->dev, "urb submit failed\n");
359 	usb_free_urb(sz->urb_in);
361 	usb_free_coherent(usbdev, maxp, sz->buf_in, sz->dma_in);
363 	kfree(sz);
380 	struct streamzap_ir *sz = usb_get_intfdata(interface);
385 	if (!sz)
388 	rc_unregister_device(sz->rdev);
389 	usb_kill_urb(sz->urb_in);
390 	usb_free_urb(sz->urb_in);
391 	usb_free_coherent(usbdev, sz->buf_in_len, sz->buf_in, sz->dma_in);
393 	kfree(sz);
398 	struct streamzap_ir *sz = usb_get_intfdata(intf);
400 	usb_kill_urb(sz->urb_in);
407 	struct streamzap_ir *sz = usb_get_intfdata(intf);
409 	if (usb_submit_urb(sz->urb_in, GFP_NOIO)) {
410 		dev_err(sz->dev, "Error submitting urb\n");