1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * USB RedRat3 IR Transceiver rc-core driver |
4 | * |
5 | * Copyright (c) 2011 by Jarod Wilson <jarod@redhat.com> |
6 | * based heavily on the work of Stephen Cox, with additional |
7 | * help from RedRat Ltd. |
8 | * |
9 | * This driver began life based on an old version of the first-generation |
10 | * lirc_mceusb driver from the lirc 0.7.2 distribution. It was then |
11 | * significantly rewritten by Stephen Cox with the aid of RedRat Ltd's |
12 | * Chris Dodge. |
13 | * |
14 | * The driver was then ported to rc-core and significantly rewritten again, |
15 | * by Jarod, using the in-kernel mceusb driver as a guide, after an initial |
16 | * port effort was started by Stephen. |
17 | * |
18 | * TODO LIST: |
19 | * - fix lirc not showing repeats properly |
20 | * -- |
21 | * |
22 | * The RedRat3 is a USB transceiver with both send & receive, |
23 | * with 2 separate sensors available for receive to enable |
24 | * both good long range reception for general use, and good |
25 | * short range reception when required for learning a signal. |
26 | * |
27 | * http://www.redrat.co.uk/ |
28 | * |
29 | * It uses its own little protocol to communicate, the required |
30 | * parts of which are embedded within this driver. |
31 | * -- |
32 | */ |
33 | |
34 | #include <asm/unaligned.h> |
35 | #include <linux/device.h> |
36 | #include <linux/leds.h> |
37 | #include <linux/module.h> |
38 | #include <linux/slab.h> |
39 | #include <linux/usb.h> |
40 | #include <linux/usb/input.h> |
41 | #include <media/rc-core.h> |
42 | |
43 | /* Driver Information */ |
44 | #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>" |
45 | #define DRIVER_AUTHOR2 "The Dweller, Stephen Cox" |
46 | #define DRIVER_DESC "RedRat3 USB IR Transceiver Driver" |
47 | #define DRIVER_NAME "redrat3" |
48 | |
49 | /* bulk data transfer types */ |
50 | #define RR3_ERROR 0x01 |
51 | #define RR3_MOD_SIGNAL_IN 0x20 |
52 | #define RR3_MOD_SIGNAL_OUT 0x21 |
53 | |
54 | /* Get the RR firmware version */ |
55 | #define RR3_FW_VERSION 0xb1 |
56 | #define RR3_FW_VERSION_LEN 64 |
57 | /* Send encoded signal bulk-sent earlier*/ |
58 | #define RR3_TX_SEND_SIGNAL 0xb3 |
59 | #define RR3_SET_IR_PARAM 0xb7 |
60 | #define RR3_GET_IR_PARAM 0xb8 |
61 | /* Blink the red LED on the device */ |
62 | #define RR3_BLINK_LED 0xb9 |
63 | /* Read serial number of device */ |
64 | #define RR3_READ_SER_NO 0xba |
65 | #define RR3_SER_NO_LEN 4 |
66 | /* Start capture with the RC receiver */ |
67 | #define RR3_RC_DET_ENABLE 0xbb |
68 | /* Stop capture with the RC receiver */ |
69 | #define RR3_RC_DET_DISABLE 0xbc |
70 | /* Start capture with the wideband receiver */ |
71 | #define RR3_MODSIG_CAPTURE 0xb2 |
72 | /* Return the status of RC detector capture */ |
73 | #define RR3_RC_DET_STATUS 0xbd |
74 | /* Reset redrat */ |
75 | #define RR3_RESET 0xa0 |
76 | |
77 | /* Max number of lengths in the signal. */ |
78 | #define RR3_IR_IO_MAX_LENGTHS 0x01 |
79 | /* Periods to measure mod. freq. */ |
80 | #define RR3_IR_IO_PERIODS_MF 0x02 |
81 | /* Size of memory for main signal data */ |
82 | #define RR3_IR_IO_SIG_MEM_SIZE 0x03 |
83 | /* Delta value when measuring lengths */ |
84 | #define RR3_IR_IO_LENGTH_FUZZ 0x04 |
85 | /* Timeout for end of signal detection */ |
86 | #define RR3_IR_IO_SIG_TIMEOUT 0x05 |
87 | /* Minimum value for pause recognition. */ |
88 | #define RR3_IR_IO_MIN_PAUSE 0x06 |
89 | |
90 | /* Clock freq. of EZ-USB chip */ |
91 | #define RR3_CLK 24000000 |
92 | /* Clock periods per timer count */ |
93 | #define RR3_CLK_PER_COUNT 12 |
94 | /* (RR3_CLK / RR3_CLK_PER_COUNT) */ |
95 | #define RR3_CLK_CONV_FACTOR 2000000 |
96 | /* USB bulk-in wideband IR data endpoint address */ |
97 | #define RR3_WIDE_IN_EP_ADDR 0x81 |
98 | /* USB bulk-in narrowband IR data endpoint address */ |
99 | #define RR3_NARROW_IN_EP_ADDR 0x82 |
100 | |
101 | /* Size of the fixed-length portion of the signal */ |
102 | #define RR3_DRIVER_MAXLENS 255 |
103 | #define RR3_MAX_SIG_SIZE 512 |
104 | #define RR3_TIME_UNIT 50 |
105 | #define RR3_END_OF_SIGNAL 0x7f |
106 | #define RR3_TX_TRAILER_LEN 2 |
107 | #define RR3_RX_MIN_TIMEOUT 5 |
108 | #define RR3_RX_MAX_TIMEOUT 2000 |
109 | |
110 | /* The 8051's CPUCS Register address */ |
111 | #define RR3_CPUCS_REG_ADDR 0x7f92 |
112 | |
113 | #define USB_RR3USB_VENDOR_ID 0x112a |
114 | #define USB_RR3USB_PRODUCT_ID 0x0001 |
115 | #define USB_RR3IIUSB_PRODUCT_ID 0x0005 |
116 | |
117 | |
118 | /* |
119 | * The redrat3 encodes an IR signal as set of different lengths and a set |
120 | * of indices into those lengths. This sets how much two lengths must |
121 | * differ before they are considered distinct, the value is specified |
122 | * in microseconds. |
123 | * Default 5, value 0 to 127. |
124 | */ |
125 | static int length_fuzz = 5; |
126 | module_param(length_fuzz, uint, 0644); |
127 | MODULE_PARM_DESC(length_fuzz, "Length Fuzz (0-127)" ); |
128 | |
129 | /* |
130 | * When receiving a continuous ir stream (for example when a user is |
131 | * holding a button down on a remote), this specifies the minimum size |
132 | * of a space when the redrat3 sends a irdata packet to the host. Specified |
133 | * in milliseconds. Default value 18ms. |
134 | * The value can be between 2 and 30 inclusive. |
135 | */ |
136 | static int minimum_pause = 18; |
137 | module_param(minimum_pause, uint, 0644); |
138 | MODULE_PARM_DESC(minimum_pause, "Minimum Pause in ms (2-30)" ); |
139 | |
140 | /* |
141 | * The carrier frequency is measured during the first pulse of the IR |
142 | * signal. The larger the number of periods used To measure, the more |
143 | * accurate the result is likely to be, however some signals have short |
144 | * initial pulses, so in some case it may be necessary to reduce this value. |
145 | * Default 8, value 1 to 255. |
146 | */ |
147 | static int periods_measure_carrier = 8; |
148 | module_param(periods_measure_carrier, uint, 0644); |
149 | MODULE_PARM_DESC(periods_measure_carrier, "Number of Periods to Measure Carrier (1-255)" ); |
150 | |
151 | |
152 | struct { |
153 | __be16 ; |
154 | __be16 ; |
155 | } __packed; |
156 | |
157 | /* sending and receiving irdata */ |
158 | struct redrat3_irdata { |
159 | struct redrat3_header ; |
160 | __be32 pause; |
161 | __be16 mod_freq_count; |
162 | __be16 num_periods; |
163 | __u8 max_lengths; |
164 | __u8 no_lengths; |
165 | __be16 max_sig_size; |
166 | __be16 sig_size; |
167 | __u8 no_repeats; |
168 | __be16 lens[RR3_DRIVER_MAXLENS]; /* not aligned */ |
169 | __u8 sigdata[RR3_MAX_SIG_SIZE]; |
170 | } __packed; |
171 | |
172 | /* firmware errors */ |
173 | struct redrat3_error { |
174 | struct redrat3_header ; |
175 | __be16 fw_error; |
176 | } __packed; |
177 | |
178 | /* table of devices that work with this driver */ |
179 | static const struct usb_device_id redrat3_dev_table[] = { |
180 | /* Original version of the RedRat3 */ |
181 | {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)}, |
182 | /* Second Version/release of the RedRat3 - RetRat3-II */ |
183 | {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)}, |
184 | {} /* Terminating entry */ |
185 | }; |
186 | |
187 | /* Structure to hold all of our device specific stuff */ |
188 | struct redrat3_dev { |
189 | /* core device bits */ |
190 | struct rc_dev *rc; |
191 | struct device *dev; |
192 | |
193 | /* led control */ |
194 | struct led_classdev led; |
195 | atomic_t flash; |
196 | struct usb_ctrlrequest flash_control; |
197 | struct urb *flash_urb; |
198 | u8 flash_in_buf; |
199 | |
200 | /* learning */ |
201 | bool wideband; |
202 | struct usb_ctrlrequest learn_control; |
203 | struct urb *learn_urb; |
204 | u8 learn_buf; |
205 | |
206 | /* save off the usb device pointer */ |
207 | struct usb_device *udev; |
208 | |
209 | /* the receive endpoint */ |
210 | struct usb_endpoint_descriptor *ep_narrow; |
211 | /* the buffer to receive data */ |
212 | void *bulk_in_buf; |
213 | /* urb used to read ir data */ |
214 | struct urb *narrow_urb; |
215 | struct urb *wide_urb; |
216 | |
217 | /* the send endpoint */ |
218 | struct usb_endpoint_descriptor *ep_out; |
219 | |
220 | /* usb dma */ |
221 | dma_addr_t dma_in; |
222 | |
223 | /* Is the device currently transmitting?*/ |
224 | bool transmitting; |
225 | |
226 | /* store for current packet */ |
227 | struct redrat3_irdata irdata; |
228 | u16 bytes_read; |
229 | |
230 | u32 carrier; |
231 | |
232 | char name[64]; |
233 | char phys[64]; |
234 | }; |
235 | |
236 | static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code) |
237 | { |
238 | if (!rr3->transmitting && (code != 0x40)) |
239 | dev_info(rr3->dev, "fw error code 0x%02x: " , code); |
240 | |
241 | switch (code) { |
242 | case 0x00: |
243 | pr_cont("No Error\n" ); |
244 | break; |
245 | |
246 | /* Codes 0x20 through 0x2f are IR Firmware Errors */ |
247 | case 0x20: |
248 | pr_cont("Initial signal pulse not long enough to measure carrier frequency\n" ); |
249 | break; |
250 | case 0x21: |
251 | pr_cont("Not enough length values allocated for signal\n" ); |
252 | break; |
253 | case 0x22: |
254 | pr_cont("Not enough memory allocated for signal data\n" ); |
255 | break; |
256 | case 0x23: |
257 | pr_cont("Too many signal repeats\n" ); |
258 | break; |
259 | case 0x28: |
260 | pr_cont("Insufficient memory available for IR signal data memory allocation\n" ); |
261 | break; |
262 | case 0x29: |
263 | pr_cont("Insufficient memory available for IrDa signal data memory allocation\n" ); |
264 | break; |
265 | |
266 | /* Codes 0x30 through 0x3f are USB Firmware Errors */ |
267 | case 0x30: |
268 | pr_cont("Insufficient memory available for bulk transfer structure\n" ); |
269 | break; |
270 | |
271 | /* |
272 | * Other error codes... These are primarily errors that can occur in |
273 | * the control messages sent to the redrat |
274 | */ |
275 | case 0x40: |
276 | if (!rr3->transmitting) |
277 | pr_cont("Signal capture has been terminated\n" ); |
278 | break; |
279 | case 0x41: |
280 | pr_cont("Attempt to set/get and unknown signal I/O algorithm parameter\n" ); |
281 | break; |
282 | case 0x42: |
283 | pr_cont("Signal capture already started\n" ); |
284 | break; |
285 | |
286 | default: |
287 | pr_cont("Unknown Error\n" ); |
288 | break; |
289 | } |
290 | } |
291 | |
292 | static u32 redrat3_val_to_mod_freq(struct redrat3_irdata *irdata) |
293 | { |
294 | u32 mod_freq = 0; |
295 | u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count); |
296 | |
297 | if (mod_freq_count != 0) |
298 | mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) / |
299 | (mod_freq_count * RR3_CLK_PER_COUNT); |
300 | |
301 | return mod_freq; |
302 | } |
303 | |
304 | /* this function scales down the figures for the same result... */ |
305 | static u32 redrat3_len_to_us(u32 length) |
306 | { |
307 | u32 biglen = length * 1000; |
308 | u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000; |
309 | u32 result = (u32) (biglen / divisor); |
310 | |
311 | /* don't allow zero lengths to go back, breaks lirc */ |
312 | return result ? result : 1; |
313 | } |
314 | |
315 | /* |
316 | * convert us back into redrat3 lengths |
317 | * |
318 | * length * 1000 length * 1000000 |
319 | * ------------- = ---------------- = micro |
320 | * rr3clk / 1000 rr3clk |
321 | |
322 | * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000 |
323 | * ----- = 4 ----- = 6 -------------- = len --------------------- |
324 | * 3 2 1000000 1000 |
325 | */ |
326 | static u32 redrat3_us_to_len(u32 microsec) |
327 | { |
328 | u32 result; |
329 | u32 divisor; |
330 | |
331 | microsec = (microsec > IR_MAX_DURATION) ? IR_MAX_DURATION : microsec; |
332 | divisor = (RR3_CLK_CONV_FACTOR / 1000); |
333 | result = (u32)(microsec * divisor) / 1000; |
334 | |
335 | /* don't allow zero lengths to go back, breaks lirc */ |
336 | return result ? result : 1; |
337 | } |
338 | |
339 | static void redrat3_process_ir_data(struct redrat3_dev *rr3) |
340 | { |
341 | struct ir_raw_event rawir = {}; |
342 | struct device *dev; |
343 | unsigned int i, sig_size, offset, val; |
344 | u32 mod_freq; |
345 | |
346 | dev = rr3->dev; |
347 | |
348 | mod_freq = redrat3_val_to_mod_freq(irdata: &rr3->irdata); |
349 | dev_dbg(dev, "Got mod_freq of %u\n" , mod_freq); |
350 | if (mod_freq && rr3->wideband) { |
351 | struct ir_raw_event ev = { |
352 | .carrier_report = 1, |
353 | .carrier = mod_freq |
354 | }; |
355 | |
356 | ir_raw_event_store(dev: rr3->rc, ev: &ev); |
357 | } |
358 | |
359 | /* process each rr3 encoded byte into an int */ |
360 | sig_size = be16_to_cpu(rr3->irdata.sig_size); |
361 | for (i = 0; i < sig_size; i++) { |
362 | offset = rr3->irdata.sigdata[i]; |
363 | val = get_unaligned_be16(p: &rr3->irdata.lens[offset]); |
364 | |
365 | /* we should always get pulse/space/pulse/space samples */ |
366 | if (i % 2) |
367 | rawir.pulse = false; |
368 | else |
369 | rawir.pulse = true; |
370 | |
371 | rawir.duration = redrat3_len_to_us(length: val); |
372 | /* cap the value to IR_MAX_DURATION */ |
373 | rawir.duration = (rawir.duration > IR_MAX_DURATION) ? |
374 | IR_MAX_DURATION : rawir.duration; |
375 | |
376 | dev_dbg(dev, "storing %s with duration %d (i: %d)\n" , |
377 | rawir.pulse ? "pulse" : "space" , rawir.duration, i); |
378 | ir_raw_event_store_with_filter(dev: rr3->rc, ev: &rawir); |
379 | } |
380 | |
381 | /* add a trailing space */ |
382 | rawir.pulse = false; |
383 | rawir.timeout = true; |
384 | rawir.duration = rr3->rc->timeout; |
385 | dev_dbg(dev, "storing trailing timeout with duration %d\n" , |
386 | rawir.duration); |
387 | ir_raw_event_store_with_filter(dev: rr3->rc, ev: &rawir); |
388 | |
389 | dev_dbg(dev, "calling ir_raw_event_handle\n" ); |
390 | ir_raw_event_handle(dev: rr3->rc); |
391 | } |
392 | |
393 | /* Util fn to send rr3 cmds */ |
394 | static int redrat3_send_cmd(int cmd, struct redrat3_dev *rr3) |
395 | { |
396 | struct usb_device *udev; |
397 | u8 *data; |
398 | int res; |
399 | |
400 | data = kzalloc(size: sizeof(u8), GFP_KERNEL); |
401 | if (!data) |
402 | return -ENOMEM; |
403 | |
404 | udev = rr3->udev; |
405 | res = usb_control_msg(dev: udev, usb_rcvctrlpipe(udev, 0), request: cmd, |
406 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
407 | value: 0x0000, index: 0x0000, data, size: sizeof(u8), timeout: 10000); |
408 | |
409 | if (res < 0) { |
410 | dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d" , |
411 | __func__, res, *data); |
412 | res = -EIO; |
413 | } else |
414 | res = data[0]; |
415 | |
416 | kfree(objp: data); |
417 | |
418 | return res; |
419 | } |
420 | |
421 | /* Enables the long range detector and starts async receive */ |
422 | static int redrat3_enable_detector(struct redrat3_dev *rr3) |
423 | { |
424 | struct device *dev = rr3->dev; |
425 | u8 ret; |
426 | |
427 | ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3); |
428 | if (ret != 0) |
429 | dev_dbg(dev, "%s: unexpected ret of %d\n" , |
430 | __func__, ret); |
431 | |
432 | ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); |
433 | if (ret != 1) { |
434 | dev_err(dev, "%s: detector status: %d, should be 1\n" , |
435 | __func__, ret); |
436 | return -EIO; |
437 | } |
438 | |
439 | ret = usb_submit_urb(urb: rr3->narrow_urb, GFP_KERNEL); |
440 | if (ret) { |
441 | dev_err(rr3->dev, "narrow band urb failed: %d" , ret); |
442 | return ret; |
443 | } |
444 | |
445 | ret = usb_submit_urb(urb: rr3->wide_urb, GFP_KERNEL); |
446 | if (ret) |
447 | dev_err(rr3->dev, "wide band urb failed: %d" , ret); |
448 | |
449 | return ret; |
450 | } |
451 | |
452 | static inline void redrat3_delete(struct redrat3_dev *rr3, |
453 | struct usb_device *udev) |
454 | { |
455 | usb_kill_urb(urb: rr3->narrow_urb); |
456 | usb_kill_urb(urb: rr3->wide_urb); |
457 | usb_kill_urb(urb: rr3->flash_urb); |
458 | usb_kill_urb(urb: rr3->learn_urb); |
459 | usb_free_urb(urb: rr3->narrow_urb); |
460 | usb_free_urb(urb: rr3->wide_urb); |
461 | usb_free_urb(urb: rr3->flash_urb); |
462 | usb_free_urb(urb: rr3->learn_urb); |
463 | usb_free_coherent(dev: udev, le16_to_cpu(rr3->ep_narrow->wMaxPacketSize), |
464 | addr: rr3->bulk_in_buf, dma: rr3->dma_in); |
465 | |
466 | kfree(objp: rr3); |
467 | } |
468 | |
469 | static u32 redrat3_get_timeout(struct redrat3_dev *rr3) |
470 | { |
471 | __be32 *tmp; |
472 | u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */ |
473 | int len, ret, pipe; |
474 | |
475 | len = sizeof(*tmp); |
476 | tmp = kzalloc(size: len, GFP_KERNEL); |
477 | if (!tmp) |
478 | return timeout; |
479 | |
480 | pipe = usb_rcvctrlpipe(rr3->udev, 0); |
481 | ret = usb_control_msg(dev: rr3->udev, pipe, RR3_GET_IR_PARAM, |
482 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
483 | RR3_IR_IO_SIG_TIMEOUT, index: 0, data: tmp, size: len, timeout: 5000); |
484 | if (ret != len) |
485 | dev_warn(rr3->dev, "Failed to read timeout from hardware\n" ); |
486 | else { |
487 | timeout = redrat3_len_to_us(be32_to_cpup(p: tmp)); |
488 | |
489 | dev_dbg(rr3->dev, "Got timeout of %d ms\n" , timeout / 1000); |
490 | } |
491 | |
492 | kfree(objp: tmp); |
493 | |
494 | return timeout; |
495 | } |
496 | |
497 | static int redrat3_set_timeout(struct rc_dev *rc_dev, unsigned int timeoutus) |
498 | { |
499 | struct redrat3_dev *rr3 = rc_dev->priv; |
500 | struct usb_device *udev = rr3->udev; |
501 | struct device *dev = rr3->dev; |
502 | __be32 *timeout; |
503 | int ret; |
504 | |
505 | timeout = kmalloc(size: sizeof(*timeout), GFP_KERNEL); |
506 | if (!timeout) |
507 | return -ENOMEM; |
508 | |
509 | *timeout = cpu_to_be32(redrat3_us_to_len(timeoutus)); |
510 | ret = usb_control_msg(dev: udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM, |
511 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, |
512 | RR3_IR_IO_SIG_TIMEOUT, index: 0, data: timeout, size: sizeof(*timeout), |
513 | timeout: 25000); |
514 | dev_dbg(dev, "set ir parm timeout %d ret 0x%02x\n" , |
515 | be32_to_cpu(*timeout), ret); |
516 | |
517 | if (ret == sizeof(*timeout)) |
518 | ret = 0; |
519 | else if (ret >= 0) |
520 | ret = -EIO; |
521 | |
522 | kfree(objp: timeout); |
523 | |
524 | return ret; |
525 | } |
526 | |
527 | static void redrat3_reset(struct redrat3_dev *rr3) |
528 | { |
529 | struct usb_device *udev = rr3->udev; |
530 | struct device *dev = rr3->dev; |
531 | int rc, rxpipe, txpipe; |
532 | u8 *val; |
533 | size_t const len = sizeof(*val); |
534 | |
535 | rxpipe = usb_rcvctrlpipe(udev, 0); |
536 | txpipe = usb_sndctrlpipe(udev, 0); |
537 | |
538 | val = kmalloc(size: len, GFP_KERNEL); |
539 | if (!val) |
540 | return; |
541 | |
542 | *val = 0x01; |
543 | rc = usb_control_msg(dev: udev, pipe: rxpipe, RR3_RESET, |
544 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
545 | RR3_CPUCS_REG_ADDR, index: 0, data: val, size: len, timeout: 25000); |
546 | dev_dbg(dev, "reset returned 0x%02x\n" , rc); |
547 | |
548 | *val = length_fuzz; |
549 | rc = usb_control_msg(dev: udev, pipe: txpipe, RR3_SET_IR_PARAM, |
550 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, |
551 | RR3_IR_IO_LENGTH_FUZZ, index: 0, data: val, size: len, timeout: 25000); |
552 | dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n" , *val, rc); |
553 | |
554 | *val = (65536 - (minimum_pause * 2000)) / 256; |
555 | rc = usb_control_msg(dev: udev, pipe: txpipe, RR3_SET_IR_PARAM, |
556 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, |
557 | RR3_IR_IO_MIN_PAUSE, index: 0, data: val, size: len, timeout: 25000); |
558 | dev_dbg(dev, "set ir parm min pause %d rc 0x%02x\n" , *val, rc); |
559 | |
560 | *val = periods_measure_carrier; |
561 | rc = usb_control_msg(dev: udev, pipe: txpipe, RR3_SET_IR_PARAM, |
562 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, |
563 | RR3_IR_IO_PERIODS_MF, index: 0, data: val, size: len, timeout: 25000); |
564 | dev_dbg(dev, "set ir parm periods measure carrier %d rc 0x%02x" , *val, |
565 | rc); |
566 | |
567 | *val = RR3_DRIVER_MAXLENS; |
568 | rc = usb_control_msg(dev: udev, pipe: txpipe, RR3_SET_IR_PARAM, |
569 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, |
570 | RR3_IR_IO_MAX_LENGTHS, index: 0, data: val, size: len, timeout: 25000); |
571 | dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n" , *val, rc); |
572 | |
573 | kfree(objp: val); |
574 | } |
575 | |
576 | static void redrat3_get_firmware_rev(struct redrat3_dev *rr3) |
577 | { |
578 | int rc; |
579 | char *buffer; |
580 | |
581 | buffer = kcalloc(RR3_FW_VERSION_LEN + 1, size: sizeof(*buffer), GFP_KERNEL); |
582 | if (!buffer) |
583 | return; |
584 | |
585 | rc = usb_control_msg(dev: rr3->udev, usb_rcvctrlpipe(rr3->udev, 0), |
586 | RR3_FW_VERSION, |
587 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
588 | value: 0, index: 0, data: buffer, RR3_FW_VERSION_LEN, timeout: 5000); |
589 | |
590 | if (rc >= 0) |
591 | dev_info(rr3->dev, "Firmware rev: %s" , buffer); |
592 | else |
593 | dev_err(rr3->dev, "Problem fetching firmware ID\n" ); |
594 | |
595 | kfree(objp: buffer); |
596 | } |
597 | |
598 | static void redrat3_read_packet_start(struct redrat3_dev *rr3, unsigned len) |
599 | { |
600 | struct redrat3_header * = rr3->bulk_in_buf; |
601 | unsigned pktlen, pkttype; |
602 | |
603 | /* grab the Length and type of transfer */ |
604 | pktlen = be16_to_cpu(header->length); |
605 | pkttype = be16_to_cpu(header->transfer_type); |
606 | |
607 | if (pktlen > sizeof(rr3->irdata)) { |
608 | dev_warn(rr3->dev, "packet length %u too large\n" , pktlen); |
609 | return; |
610 | } |
611 | |
612 | switch (pkttype) { |
613 | case RR3_ERROR: |
614 | if (len >= sizeof(struct redrat3_error)) { |
615 | struct redrat3_error *error = rr3->bulk_in_buf; |
616 | unsigned fw_error = be16_to_cpu(error->fw_error); |
617 | redrat3_dump_fw_error(rr3, code: fw_error); |
618 | } |
619 | break; |
620 | |
621 | case RR3_MOD_SIGNAL_IN: |
622 | memcpy(&rr3->irdata, rr3->bulk_in_buf, len); |
623 | rr3->bytes_read = len; |
624 | dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n" , |
625 | rr3->bytes_read, pktlen); |
626 | break; |
627 | |
628 | default: |
629 | dev_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n" , |
630 | pkttype, len, pktlen); |
631 | break; |
632 | } |
633 | } |
634 | |
635 | static void redrat3_read_packet_continue(struct redrat3_dev *rr3, unsigned len) |
636 | { |
637 | void *irdata = &rr3->irdata; |
638 | |
639 | if (len + rr3->bytes_read > sizeof(rr3->irdata)) { |
640 | dev_warn(rr3->dev, "too much data for packet\n" ); |
641 | rr3->bytes_read = 0; |
642 | return; |
643 | } |
644 | |
645 | memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len); |
646 | |
647 | rr3->bytes_read += len; |
648 | dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n" , rr3->bytes_read, |
649 | be16_to_cpu(rr3->irdata.header.length)); |
650 | } |
651 | |
652 | /* gather IR data from incoming urb, process it when we have enough */ |
653 | static int redrat3_get_ir_data(struct redrat3_dev *rr3, unsigned len) |
654 | { |
655 | struct device *dev = rr3->dev; |
656 | unsigned pkttype; |
657 | int ret = 0; |
658 | |
659 | if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) { |
660 | redrat3_read_packet_start(rr3, len); |
661 | } else if (rr3->bytes_read != 0) { |
662 | redrat3_read_packet_continue(rr3, len); |
663 | } else if (rr3->bytes_read == 0) { |
664 | dev_err(dev, "error: no packet data read\n" ); |
665 | ret = -ENODATA; |
666 | goto out; |
667 | } |
668 | |
669 | if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length) + |
670 | sizeof(struct redrat3_header)) |
671 | /* we're still accumulating data */ |
672 | return 0; |
673 | |
674 | /* if we get here, we've got IR data to decode */ |
675 | pkttype = be16_to_cpu(rr3->irdata.header.transfer_type); |
676 | if (pkttype == RR3_MOD_SIGNAL_IN) |
677 | redrat3_process_ir_data(rr3); |
678 | else |
679 | dev_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n" , |
680 | pkttype); |
681 | |
682 | out: |
683 | rr3->bytes_read = 0; |
684 | return ret; |
685 | } |
686 | |
687 | /* callback function from USB when async USB request has completed */ |
688 | static void redrat3_handle_async(struct urb *urb) |
689 | { |
690 | struct redrat3_dev *rr3 = urb->context; |
691 | int ret; |
692 | |
693 | switch (urb->status) { |
694 | case 0: |
695 | ret = redrat3_get_ir_data(rr3, len: urb->actual_length); |
696 | if (!ret && rr3->wideband && !rr3->learn_urb->hcpriv) { |
697 | ret = usb_submit_urb(urb: rr3->learn_urb, GFP_ATOMIC); |
698 | if (ret) |
699 | dev_err(rr3->dev, "Failed to submit learning urb: %d" , |
700 | ret); |
701 | } |
702 | |
703 | if (!ret) { |
704 | /* no error, prepare to read more */ |
705 | ret = usb_submit_urb(urb, GFP_ATOMIC); |
706 | if (ret) |
707 | dev_err(rr3->dev, "Failed to resubmit urb: %d" , |
708 | ret); |
709 | } |
710 | break; |
711 | |
712 | case -ECONNRESET: |
713 | case -ENOENT: |
714 | case -ESHUTDOWN: |
715 | usb_unlink_urb(urb); |
716 | return; |
717 | |
718 | case -EPIPE: |
719 | default: |
720 | dev_warn(rr3->dev, "Error: urb status = %d\n" , urb->status); |
721 | rr3->bytes_read = 0; |
722 | break; |
723 | } |
724 | } |
725 | |
726 | static u16 mod_freq_to_val(unsigned int mod_freq) |
727 | { |
728 | int mult = 6000000; |
729 | |
730 | /* Clk used in mod. freq. generation is CLK24/4. */ |
731 | return 65536 - (mult / mod_freq); |
732 | } |
733 | |
734 | static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier) |
735 | { |
736 | struct redrat3_dev *rr3 = rcdev->priv; |
737 | struct device *dev = rr3->dev; |
738 | |
739 | dev_dbg(dev, "Setting modulation frequency to %u" , carrier); |
740 | if (carrier == 0) |
741 | return -EINVAL; |
742 | |
743 | rr3->carrier = carrier; |
744 | |
745 | return 0; |
746 | } |
747 | |
748 | static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf, |
749 | unsigned count) |
750 | { |
751 | struct redrat3_dev *rr3 = rcdev->priv; |
752 | struct device *dev = rr3->dev; |
753 | struct redrat3_irdata *irdata = NULL; |
754 | int ret, ret_len; |
755 | int lencheck, cur_sample_len, pipe; |
756 | int *sample_lens = NULL; |
757 | u8 curlencheck = 0; |
758 | unsigned i, sendbuf_len; |
759 | |
760 | if (rr3->transmitting) { |
761 | dev_warn(dev, "%s: transmitter already in use\n" , __func__); |
762 | return -EAGAIN; |
763 | } |
764 | |
765 | if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN) |
766 | return -EINVAL; |
767 | |
768 | /* rr3 will disable rc detector on transmit */ |
769 | rr3->transmitting = true; |
770 | |
771 | sample_lens = kcalloc(RR3_DRIVER_MAXLENS, |
772 | size: sizeof(*sample_lens), |
773 | GFP_KERNEL); |
774 | if (!sample_lens) |
775 | return -ENOMEM; |
776 | |
777 | irdata = kzalloc(size: sizeof(*irdata), GFP_KERNEL); |
778 | if (!irdata) { |
779 | ret = -ENOMEM; |
780 | goto out; |
781 | } |
782 | |
783 | for (i = 0; i < count; i++) { |
784 | cur_sample_len = redrat3_us_to_len(microsec: txbuf[i]); |
785 | if (cur_sample_len > 0xffff) { |
786 | dev_warn(dev, "transmit period of %uus truncated to %uus\n" , |
787 | txbuf[i], redrat3_len_to_us(0xffff)); |
788 | cur_sample_len = 0xffff; |
789 | } |
790 | for (lencheck = 0; lencheck < curlencheck; lencheck++) { |
791 | if (sample_lens[lencheck] == cur_sample_len) |
792 | break; |
793 | } |
794 | if (lencheck == curlencheck) { |
795 | dev_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n" , |
796 | i, txbuf[i], curlencheck, cur_sample_len); |
797 | if (curlencheck < RR3_DRIVER_MAXLENS) { |
798 | /* now convert the value to a proper |
799 | * rr3 value.. */ |
800 | sample_lens[curlencheck] = cur_sample_len; |
801 | put_unaligned_be16(val: cur_sample_len, |
802 | p: &irdata->lens[curlencheck]); |
803 | curlencheck++; |
804 | } else { |
805 | ret = -EINVAL; |
806 | goto out; |
807 | } |
808 | } |
809 | irdata->sigdata[i] = lencheck; |
810 | } |
811 | |
812 | irdata->sigdata[count] = RR3_END_OF_SIGNAL; |
813 | irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL; |
814 | |
815 | sendbuf_len = offsetof(struct redrat3_irdata, |
816 | sigdata[count + RR3_TX_TRAILER_LEN]); |
817 | /* fill in our packet header */ |
818 | irdata->header.length = cpu_to_be16(sendbuf_len - |
819 | sizeof(struct redrat3_header)); |
820 | irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT); |
821 | irdata->pause = cpu_to_be32(redrat3_len_to_us(100)); |
822 | irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier)); |
823 | irdata->no_lengths = curlencheck; |
824 | irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN); |
825 | |
826 | pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress); |
827 | ret = usb_bulk_msg(usb_dev: rr3->udev, pipe, data: irdata, |
828 | len: sendbuf_len, actual_length: &ret_len, timeout: 10000); |
829 | dev_dbg(dev, "sent %d bytes, (ret %d)\n" , ret_len, ret); |
830 | |
831 | /* now tell the hardware to transmit what we sent it */ |
832 | pipe = usb_rcvctrlpipe(rr3->udev, 0); |
833 | ret = usb_control_msg(dev: rr3->udev, pipe, RR3_TX_SEND_SIGNAL, |
834 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
835 | value: 0, index: 0, data: irdata, size: 2, timeout: 10000); |
836 | |
837 | if (ret < 0) |
838 | dev_err(dev, "Error: control msg send failed, rc %d\n" , ret); |
839 | else |
840 | ret = count; |
841 | |
842 | out: |
843 | kfree(objp: irdata); |
844 | kfree(objp: sample_lens); |
845 | |
846 | rr3->transmitting = false; |
847 | /* rr3 re-enables rc detector because it was enabled before */ |
848 | |
849 | return ret; |
850 | } |
851 | |
852 | static void redrat3_brightness_set(struct led_classdev *led_dev, enum |
853 | led_brightness brightness) |
854 | { |
855 | struct redrat3_dev *rr3 = container_of(led_dev, struct redrat3_dev, |
856 | led); |
857 | |
858 | if (brightness != LED_OFF && atomic_cmpxchg(v: &rr3->flash, old: 0, new: 1) == 0) { |
859 | int ret = usb_submit_urb(urb: rr3->flash_urb, GFP_ATOMIC); |
860 | if (ret != 0) { |
861 | dev_dbg(rr3->dev, "%s: unexpected ret of %d\n" , |
862 | __func__, ret); |
863 | atomic_set(v: &rr3->flash, i: 0); |
864 | } |
865 | } |
866 | } |
867 | |
868 | static int redrat3_wideband_receiver(struct rc_dev *rcdev, int enable) |
869 | { |
870 | struct redrat3_dev *rr3 = rcdev->priv; |
871 | int ret = 0; |
872 | |
873 | rr3->wideband = enable != 0; |
874 | |
875 | if (enable) { |
876 | ret = usb_submit_urb(urb: rr3->learn_urb, GFP_KERNEL); |
877 | if (ret) |
878 | dev_err(rr3->dev, "Failed to submit learning urb: %d" , |
879 | ret); |
880 | } |
881 | |
882 | return ret; |
883 | } |
884 | |
885 | static void redrat3_learn_complete(struct urb *urb) |
886 | { |
887 | struct redrat3_dev *rr3 = urb->context; |
888 | |
889 | switch (urb->status) { |
890 | case 0: |
891 | break; |
892 | case -ECONNRESET: |
893 | case -ENOENT: |
894 | case -ESHUTDOWN: |
895 | usb_unlink_urb(urb); |
896 | return; |
897 | case -EPIPE: |
898 | default: |
899 | dev_err(rr3->dev, "Error: learn urb status = %d" , urb->status); |
900 | break; |
901 | } |
902 | } |
903 | |
904 | static void redrat3_led_complete(struct urb *urb) |
905 | { |
906 | struct redrat3_dev *rr3 = urb->context; |
907 | |
908 | switch (urb->status) { |
909 | case 0: |
910 | break; |
911 | case -ECONNRESET: |
912 | case -ENOENT: |
913 | case -ESHUTDOWN: |
914 | usb_unlink_urb(urb); |
915 | return; |
916 | case -EPIPE: |
917 | default: |
918 | dev_dbg(rr3->dev, "Error: urb status = %d\n" , urb->status); |
919 | break; |
920 | } |
921 | |
922 | rr3->led.brightness = LED_OFF; |
923 | atomic_dec(v: &rr3->flash); |
924 | } |
925 | |
926 | static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) |
927 | { |
928 | struct device *dev = rr3->dev; |
929 | struct rc_dev *rc; |
930 | int ret; |
931 | u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct); |
932 | |
933 | rc = rc_allocate_device(RC_DRIVER_IR_RAW); |
934 | if (!rc) |
935 | return NULL; |
936 | |
937 | snprintf(buf: rr3->name, size: sizeof(rr3->name), |
938 | fmt: "RedRat3%s Infrared Remote Transceiver" , |
939 | prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "" ); |
940 | |
941 | usb_make_path(dev: rr3->udev, buf: rr3->phys, size: sizeof(rr3->phys)); |
942 | |
943 | rc->device_name = rr3->name; |
944 | rc->input_phys = rr3->phys; |
945 | usb_to_input_id(dev: rr3->udev, id: &rc->input_id); |
946 | rc->dev.parent = dev; |
947 | rc->priv = rr3; |
948 | rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER; |
949 | rc->min_timeout = MS_TO_US(RR3_RX_MIN_TIMEOUT); |
950 | rc->max_timeout = MS_TO_US(RR3_RX_MAX_TIMEOUT); |
951 | rc->timeout = redrat3_get_timeout(rr3); |
952 | rc->s_timeout = redrat3_set_timeout; |
953 | rc->tx_ir = redrat3_transmit_ir; |
954 | rc->s_tx_carrier = redrat3_set_tx_carrier; |
955 | rc->s_carrier_report = redrat3_wideband_receiver; |
956 | rc->driver_name = DRIVER_NAME; |
957 | rc->rx_resolution = 2; |
958 | rc->map_name = RC_MAP_HAUPPAUGE; |
959 | |
960 | ret = rc_register_device(dev: rc); |
961 | if (ret < 0) { |
962 | dev_err(dev, "remote dev registration failed\n" ); |
963 | goto out; |
964 | } |
965 | |
966 | return rc; |
967 | |
968 | out: |
969 | rc_free_device(dev: rc); |
970 | return NULL; |
971 | } |
972 | |
973 | static int redrat3_dev_probe(struct usb_interface *intf, |
974 | const struct usb_device_id *id) |
975 | { |
976 | struct usb_device *udev = interface_to_usbdev(intf); |
977 | struct device *dev = &intf->dev; |
978 | struct usb_host_interface *uhi; |
979 | struct redrat3_dev *rr3; |
980 | struct usb_endpoint_descriptor *ep; |
981 | struct usb_endpoint_descriptor *ep_narrow = NULL; |
982 | struct usb_endpoint_descriptor *ep_wide = NULL; |
983 | struct usb_endpoint_descriptor *ep_out = NULL; |
984 | u8 addr, attrs; |
985 | int pipe, i; |
986 | int retval = -ENOMEM; |
987 | |
988 | uhi = intf->cur_altsetting; |
989 | |
990 | /* find our bulk-in and bulk-out endpoints */ |
991 | for (i = 0; i < uhi->desc.bNumEndpoints; ++i) { |
992 | ep = &uhi->endpoint[i].desc; |
993 | addr = ep->bEndpointAddress; |
994 | attrs = ep->bmAttributes; |
995 | |
996 | if (((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && |
997 | ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == |
998 | USB_ENDPOINT_XFER_BULK)) { |
999 | dev_dbg(dev, "found bulk-in endpoint at 0x%02x\n" , |
1000 | ep->bEndpointAddress); |
1001 | /* data comes in on 0x82, 0x81 is for learning */ |
1002 | if (ep->bEndpointAddress == RR3_NARROW_IN_EP_ADDR) |
1003 | ep_narrow = ep; |
1004 | if (ep->bEndpointAddress == RR3_WIDE_IN_EP_ADDR) |
1005 | ep_wide = ep; |
1006 | } |
1007 | |
1008 | if ((ep_out == NULL) && |
1009 | ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && |
1010 | ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == |
1011 | USB_ENDPOINT_XFER_BULK)) { |
1012 | dev_dbg(dev, "found bulk-out endpoint at 0x%02x\n" , |
1013 | ep->bEndpointAddress); |
1014 | ep_out = ep; |
1015 | } |
1016 | } |
1017 | |
1018 | if (!ep_narrow || !ep_out || !ep_wide) { |
1019 | dev_err(dev, "Couldn't find all endpoints\n" ); |
1020 | retval = -ENODEV; |
1021 | goto no_endpoints; |
1022 | } |
1023 | |
1024 | /* allocate memory for our device state and initialize it */ |
1025 | rr3 = kzalloc(size: sizeof(*rr3), GFP_KERNEL); |
1026 | if (!rr3) |
1027 | goto no_endpoints; |
1028 | |
1029 | rr3->dev = &intf->dev; |
1030 | rr3->ep_narrow = ep_narrow; |
1031 | rr3->ep_out = ep_out; |
1032 | rr3->udev = udev; |
1033 | |
1034 | /* set up bulk-in endpoint */ |
1035 | rr3->narrow_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1036 | if (!rr3->narrow_urb) |
1037 | goto redrat_free; |
1038 | |
1039 | rr3->wide_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1040 | if (!rr3->wide_urb) |
1041 | goto redrat_free; |
1042 | |
1043 | rr3->bulk_in_buf = usb_alloc_coherent(dev: udev, |
1044 | le16_to_cpu(ep_narrow->wMaxPacketSize), |
1045 | GFP_KERNEL, dma: &rr3->dma_in); |
1046 | if (!rr3->bulk_in_buf) |
1047 | goto redrat_free; |
1048 | |
1049 | pipe = usb_rcvbulkpipe(udev, ep_narrow->bEndpointAddress); |
1050 | usb_fill_bulk_urb(urb: rr3->narrow_urb, dev: udev, pipe, transfer_buffer: rr3->bulk_in_buf, |
1051 | le16_to_cpu(ep_narrow->wMaxPacketSize), |
1052 | complete_fn: redrat3_handle_async, context: rr3); |
1053 | rr3->narrow_urb->transfer_dma = rr3->dma_in; |
1054 | rr3->narrow_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1055 | |
1056 | pipe = usb_rcvbulkpipe(udev, ep_wide->bEndpointAddress); |
1057 | usb_fill_bulk_urb(urb: rr3->wide_urb, dev: udev, pipe, transfer_buffer: rr3->bulk_in_buf, |
1058 | le16_to_cpu(ep_narrow->wMaxPacketSize), |
1059 | complete_fn: redrat3_handle_async, context: rr3); |
1060 | rr3->wide_urb->transfer_dma = rr3->dma_in; |
1061 | rr3->wide_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
1062 | |
1063 | redrat3_reset(rr3); |
1064 | redrat3_get_firmware_rev(rr3); |
1065 | |
1066 | /* default.. will get overridden by any sends with a freq defined */ |
1067 | rr3->carrier = 38000; |
1068 | |
1069 | atomic_set(v: &rr3->flash, i: 0); |
1070 | rr3->flash_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1071 | if (!rr3->flash_urb) |
1072 | goto redrat_free; |
1073 | |
1074 | /* learn urb */ |
1075 | rr3->learn_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1076 | if (!rr3->learn_urb) |
1077 | goto redrat_free; |
1078 | |
1079 | /* setup packet is 'c0 b2 0000 0000 0001' */ |
1080 | rr3->learn_control.bRequestType = 0xc0; |
1081 | rr3->learn_control.bRequest = RR3_MODSIG_CAPTURE; |
1082 | rr3->learn_control.wLength = cpu_to_le16(1); |
1083 | |
1084 | usb_fill_control_urb(urb: rr3->learn_urb, dev: udev, usb_rcvctrlpipe(udev, 0), |
1085 | setup_packet: (unsigned char *)&rr3->learn_control, |
1086 | transfer_buffer: &rr3->learn_buf, buffer_length: sizeof(rr3->learn_buf), |
1087 | complete_fn: redrat3_learn_complete, context: rr3); |
1088 | |
1089 | /* setup packet is 'c0 b9 0000 0000 0001' */ |
1090 | rr3->flash_control.bRequestType = 0xc0; |
1091 | rr3->flash_control.bRequest = RR3_BLINK_LED; |
1092 | rr3->flash_control.wLength = cpu_to_le16(1); |
1093 | |
1094 | usb_fill_control_urb(urb: rr3->flash_urb, dev: udev, usb_rcvctrlpipe(udev, 0), |
1095 | setup_packet: (unsigned char *)&rr3->flash_control, |
1096 | transfer_buffer: &rr3->flash_in_buf, buffer_length: sizeof(rr3->flash_in_buf), |
1097 | complete_fn: redrat3_led_complete, context: rr3); |
1098 | |
1099 | /* led control */ |
1100 | rr3->led.name = "redrat3:red:feedback" ; |
1101 | rr3->led.default_trigger = "rc-feedback" ; |
1102 | rr3->led.brightness_set = redrat3_brightness_set; |
1103 | retval = led_classdev_register(parent: &intf->dev, led_cdev: &rr3->led); |
1104 | if (retval) |
1105 | goto redrat_free; |
1106 | |
1107 | rr3->rc = redrat3_init_rc_dev(rr3); |
1108 | if (!rr3->rc) { |
1109 | retval = -ENOMEM; |
1110 | goto led_free; |
1111 | } |
1112 | |
1113 | /* might be all we need to do? */ |
1114 | retval = redrat3_enable_detector(rr3); |
1115 | if (retval < 0) |
1116 | goto led_free; |
1117 | |
1118 | /* we can register the device now, as it is ready */ |
1119 | usb_set_intfdata(intf, data: rr3); |
1120 | |
1121 | return 0; |
1122 | |
1123 | led_free: |
1124 | led_classdev_unregister(led_cdev: &rr3->led); |
1125 | redrat_free: |
1126 | redrat3_delete(rr3, udev: rr3->udev); |
1127 | |
1128 | no_endpoints: |
1129 | return retval; |
1130 | } |
1131 | |
1132 | static void redrat3_dev_disconnect(struct usb_interface *intf) |
1133 | { |
1134 | struct usb_device *udev = interface_to_usbdev(intf); |
1135 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); |
1136 | |
1137 | usb_set_intfdata(intf, NULL); |
1138 | rc_unregister_device(dev: rr3->rc); |
1139 | led_classdev_unregister(led_cdev: &rr3->led); |
1140 | redrat3_delete(rr3, udev); |
1141 | } |
1142 | |
1143 | static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message) |
1144 | { |
1145 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); |
1146 | |
1147 | led_classdev_suspend(led_cdev: &rr3->led); |
1148 | usb_kill_urb(urb: rr3->narrow_urb); |
1149 | usb_kill_urb(urb: rr3->wide_urb); |
1150 | usb_kill_urb(urb: rr3->flash_urb); |
1151 | return 0; |
1152 | } |
1153 | |
1154 | static int redrat3_dev_resume(struct usb_interface *intf) |
1155 | { |
1156 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); |
1157 | |
1158 | if (usb_submit_urb(urb: rr3->narrow_urb, GFP_NOIO)) |
1159 | return -EIO; |
1160 | if (usb_submit_urb(urb: rr3->wide_urb, GFP_NOIO)) |
1161 | return -EIO; |
1162 | led_classdev_resume(led_cdev: &rr3->led); |
1163 | return 0; |
1164 | } |
1165 | |
1166 | static struct usb_driver redrat3_dev_driver = { |
1167 | .name = DRIVER_NAME, |
1168 | .probe = redrat3_dev_probe, |
1169 | .disconnect = redrat3_dev_disconnect, |
1170 | .suspend = redrat3_dev_suspend, |
1171 | .resume = redrat3_dev_resume, |
1172 | .reset_resume = redrat3_dev_resume, |
1173 | .id_table = redrat3_dev_table |
1174 | }; |
1175 | |
1176 | module_usb_driver(redrat3_dev_driver); |
1177 | |
1178 | MODULE_DESCRIPTION(DRIVER_DESC); |
1179 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1180 | MODULE_AUTHOR(DRIVER_AUTHOR2); |
1181 | MODULE_LICENSE("GPL" ); |
1182 | MODULE_DEVICE_TABLE(usb, redrat3_dev_table); |
1183 | |