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2154be65 JW |
1 | /* |
2 | * USB RedRat3 IR Transceiver rc-core driver | |
3 | * | |
4 | * Copyright (c) 2011 by Jarod Wilson <jarod@redhat.com> | |
5 | * based heavily on the work of Stephen Cox, with additional | |
6 | * help from RedRat Ltd. | |
7 | * | |
8 | * This driver began life based an an old version of the first-generation | |
9 | * lirc_mceusb driver from the lirc 0.7.2 distribution. It was then | |
10 | * significantly rewritten by Stephen Cox with the aid of RedRat Ltd's | |
11 | * Chris Dodge. | |
12 | * | |
13 | * The driver was then ported to rc-core and significantly rewritten again, | |
14 | * by Jarod, using the in-kernel mceusb driver as a guide, after an initial | |
15 | * port effort was started by Stephen. | |
16 | * | |
17 | * TODO LIST: | |
18 | * - fix lirc not showing repeats properly | |
19 | * -- | |
20 | * | |
21 | * The RedRat3 is a USB transceiver with both send & receive, | |
22 | * with 2 separate sensors available for receive to enable | |
23 | * both good long range reception for general use, and good | |
24 | * short range reception when required for learning a signal. | |
25 | * | |
26 | * http://www.redrat.co.uk/ | |
27 | * | |
28 | * It uses its own little protocol to communicate, the required | |
29 | * parts of which are embedded within this driver. | |
30 | * -- | |
31 | * | |
32 | * This program is free software; you can redistribute it and/or modify | |
33 | * it under the terms of the GNU General Public License as published by | |
34 | * the Free Software Foundation; either version 2 of the License, or | |
35 | * (at your option) any later version. | |
36 | * | |
37 | * This program is distributed in the hope that it will be useful, | |
38 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
39 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
40 | * GNU General Public License for more details. | |
41 | * | |
42 | * You should have received a copy of the GNU General Public License | |
43 | * along with this program; if not, write to the Free Software | |
44 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
45 | * | |
46 | */ | |
47 | ||
48 | #include <linux/device.h> | |
49 | #include <linux/module.h> | |
50 | #include <linux/slab.h> | |
51 | #include <linux/usb.h> | |
52 | #include <linux/usb/input.h> | |
53 | #include <media/rc-core.h> | |
54 | ||
55 | /* Driver Information */ | |
56 | #define DRIVER_VERSION "0.70" | |
57 | #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>" | |
58 | #define DRIVER_AUTHOR2 "The Dweller, Stephen Cox" | |
59 | #define DRIVER_DESC "RedRat3 USB IR Transceiver Driver" | |
60 | #define DRIVER_NAME "redrat3" | |
61 | ||
62 | /* module parameters */ | |
63 | #ifdef CONFIG_USB_DEBUG | |
64 | static int debug = 1; | |
65 | #else | |
66 | static int debug; | |
67 | #endif | |
68 | ||
69 | #define RR3_DEBUG_STANDARD 0x1 | |
70 | #define RR3_DEBUG_FUNCTION_TRACE 0x2 | |
71 | ||
72 | #define rr3_dbg(dev, fmt, ...) \ | |
73 | do { \ | |
74 | if (debug & RR3_DEBUG_STANDARD) \ | |
75 | dev_info(dev, fmt, ## __VA_ARGS__); \ | |
76 | } while (0) | |
77 | ||
78 | #define rr3_ftr(dev, fmt, ...) \ | |
79 | do { \ | |
80 | if (debug & RR3_DEBUG_FUNCTION_TRACE) \ | |
81 | dev_info(dev, fmt, ## __VA_ARGS__); \ | |
82 | } while (0) | |
83 | ||
84 | /* bulk data transfer types */ | |
85 | #define RR3_ERROR 0x01 | |
86 | #define RR3_MOD_SIGNAL_IN 0x20 | |
87 | #define RR3_MOD_SIGNAL_OUT 0x21 | |
88 | ||
89 | /* Get the RR firmware version */ | |
90 | #define RR3_FW_VERSION 0xb1 | |
91 | #define RR3_FW_VERSION_LEN 64 | |
92 | /* Send encoded signal bulk-sent earlier*/ | |
93 | #define RR3_TX_SEND_SIGNAL 0xb3 | |
94 | #define RR3_SET_IR_PARAM 0xb7 | |
95 | #define RR3_GET_IR_PARAM 0xb8 | |
96 | /* Blink the red LED on the device */ | |
97 | #define RR3_BLINK_LED 0xb9 | |
98 | /* Read serial number of device */ | |
99 | #define RR3_READ_SER_NO 0xba | |
100 | #define RR3_SER_NO_LEN 4 | |
101 | /* Start capture with the RC receiver */ | |
102 | #define RR3_RC_DET_ENABLE 0xbb | |
103 | /* Stop capture with the RC receiver */ | |
104 | #define RR3_RC_DET_DISABLE 0xbc | |
105 | /* Return the status of RC detector capture */ | |
106 | #define RR3_RC_DET_STATUS 0xbd | |
107 | /* Reset redrat */ | |
108 | #define RR3_RESET 0xa0 | |
109 | ||
110 | /* Max number of lengths in the signal. */ | |
111 | #define RR3_IR_IO_MAX_LENGTHS 0x01 | |
112 | /* Periods to measure mod. freq. */ | |
113 | #define RR3_IR_IO_PERIODS_MF 0x02 | |
114 | /* Size of memory for main signal data */ | |
115 | #define RR3_IR_IO_SIG_MEM_SIZE 0x03 | |
116 | /* Delta value when measuring lengths */ | |
117 | #define RR3_IR_IO_LENGTH_FUZZ 0x04 | |
118 | /* Timeout for end of signal detection */ | |
119 | #define RR3_IR_IO_SIG_TIMEOUT 0x05 | |
120 | /* Minumum value for pause recognition. */ | |
121 | #define RR3_IR_IO_MIN_PAUSE 0x06 | |
122 | ||
123 | /* Clock freq. of EZ-USB chip */ | |
124 | #define RR3_CLK 24000000 | |
125 | /* Clock periods per timer count */ | |
126 | #define RR3_CLK_PER_COUNT 12 | |
127 | /* (RR3_CLK / RR3_CLK_PER_COUNT) */ | |
128 | #define RR3_CLK_CONV_FACTOR 2000000 | |
129 | /* USB bulk-in IR data endpoint address */ | |
130 | #define RR3_BULK_IN_EP_ADDR 0x82 | |
131 | ||
132 | /* Raw Modulated signal data value offsets */ | |
133 | #define RR3_PAUSE_OFFSET 0 | |
134 | #define RR3_FREQ_COUNT_OFFSET 4 | |
135 | #define RR3_NUM_PERIOD_OFFSET 6 | |
136 | #define RR3_MAX_LENGTHS_OFFSET 8 | |
137 | #define RR3_NUM_LENGTHS_OFFSET 9 | |
138 | #define RR3_MAX_SIGS_OFFSET 10 | |
139 | #define RR3_NUM_SIGS_OFFSET 12 | |
140 | #define RR3_REPEATS_OFFSET 14 | |
141 | ||
142 | /* Size of the fixed-length portion of the signal */ | |
143 | #define RR3_HEADER_LENGTH 15 | |
144 | #define RR3_DRIVER_MAXLENS 128 | |
145 | #define RR3_MAX_SIG_SIZE 512 | |
146 | #define RR3_MAX_BUF_SIZE \ | |
147 | ((2 * RR3_HEADER_LENGTH) + RR3_DRIVER_MAXLENS + RR3_MAX_SIG_SIZE) | |
148 | #define RR3_TIME_UNIT 50 | |
149 | #define RR3_END_OF_SIGNAL 0x7f | |
150 | #define RR3_TX_HEADER_OFFSET 4 | |
151 | #define RR3_TX_TRAILER_LEN 2 | |
152 | #define RR3_RX_MIN_TIMEOUT 5 | |
153 | #define RR3_RX_MAX_TIMEOUT 2000 | |
154 | ||
155 | /* The 8051's CPUCS Register address */ | |
156 | #define RR3_CPUCS_REG_ADDR 0x7f92 | |
157 | ||
158 | #define USB_RR3USB_VENDOR_ID 0x112a | |
159 | #define USB_RR3USB_PRODUCT_ID 0x0001 | |
160 | #define USB_RR3IIUSB_PRODUCT_ID 0x0005 | |
161 | ||
162 | /* table of devices that work with this driver */ | |
163 | static struct usb_device_id redrat3_dev_table[] = { | |
164 | /* Original version of the RedRat3 */ | |
165 | {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)}, | |
166 | /* Second Version/release of the RedRat3 - RetRat3-II */ | |
167 | {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)}, | |
168 | {} /* Terminating entry */ | |
169 | }; | |
170 | ||
171 | /* Structure to hold all of our device specific stuff */ | |
172 | struct redrat3_dev { | |
173 | /* core device bits */ | |
174 | struct rc_dev *rc; | |
175 | struct device *dev; | |
176 | ||
177 | /* save off the usb device pointer */ | |
178 | struct usb_device *udev; | |
179 | ||
180 | /* the receive endpoint */ | |
181 | struct usb_endpoint_descriptor *ep_in; | |
182 | /* the buffer to receive data */ | |
183 | unsigned char *bulk_in_buf; | |
184 | /* urb used to read ir data */ | |
185 | struct urb *read_urb; | |
186 | ||
187 | /* the send endpoint */ | |
188 | struct usb_endpoint_descriptor *ep_out; | |
189 | /* the buffer to send data */ | |
190 | unsigned char *bulk_out_buf; | |
191 | /* the urb used to send data */ | |
192 | struct urb *write_urb; | |
193 | ||
194 | /* usb dma */ | |
195 | dma_addr_t dma_in; | |
196 | dma_addr_t dma_out; | |
197 | ||
2154be65 JW |
198 | /* rx signal timeout timer */ |
199 | struct timer_list rx_timeout; | |
c53f9f00 | 200 | u32 hw_timeout; |
2154be65 | 201 | |
2154be65 JW |
202 | /* is the detector enabled*/ |
203 | bool det_enabled; | |
204 | /* Is the device currently transmitting?*/ | |
205 | bool transmitting; | |
206 | ||
207 | /* store for current packet */ | |
208 | char pbuf[RR3_MAX_BUF_SIZE]; | |
209 | u16 pktlen; | |
210 | u16 pkttype; | |
211 | u16 bytes_read; | |
2154be65 JW |
212 | char *datap; |
213 | ||
214 | u32 carrier; | |
215 | ||
216 | char name[128]; | |
217 | char phys[64]; | |
218 | }; | |
219 | ||
220 | /* All incoming data buffers adhere to a very specific data format */ | |
221 | struct redrat3_signal_header { | |
222 | u16 length; /* Length of data being transferred */ | |
223 | u16 transfer_type; /* Type of data transferred */ | |
224 | u32 pause; /* Pause between main and repeat signals */ | |
225 | u16 mod_freq_count; /* Value of timer on mod. freq. measurement */ | |
226 | u16 no_periods; /* No. of periods over which mod. freq. is measured */ | |
227 | u8 max_lengths; /* Max no. of lengths (i.e. size of array) */ | |
228 | u8 no_lengths; /* Actual no. of elements in lengths array */ | |
229 | u16 max_sig_size; /* Max no. of values in signal data array */ | |
230 | u16 sig_size; /* Acuto no. of values in signal data array */ | |
231 | u8 no_repeats; /* No. of repeats of repeat signal section */ | |
232 | /* Here forward is the lengths and signal data */ | |
233 | }; | |
234 | ||
235 | static void redrat3_dump_signal_header(struct redrat3_signal_header *header) | |
236 | { | |
237 | pr_info("%s:\n", __func__); | |
238 | pr_info(" * length: %u, transfer_type: 0x%02x\n", | |
239 | header->length, header->transfer_type); | |
240 | pr_info(" * pause: %u, freq_count: %u, no_periods: %u\n", | |
241 | header->pause, header->mod_freq_count, header->no_periods); | |
242 | pr_info(" * lengths: %u (max: %u)\n", | |
243 | header->no_lengths, header->max_lengths); | |
244 | pr_info(" * sig_size: %u (max: %u)\n", | |
245 | header->sig_size, header->max_sig_size); | |
246 | pr_info(" * repeats: %u\n", header->no_repeats); | |
247 | } | |
248 | ||
249 | static void redrat3_dump_signal_data(char *buffer, u16 len) | |
250 | { | |
251 | int offset, i; | |
252 | char *data_vals; | |
253 | ||
254 | pr_info("%s:", __func__); | |
255 | ||
256 | offset = RR3_TX_HEADER_OFFSET + RR3_HEADER_LENGTH | |
257 | + (RR3_DRIVER_MAXLENS * sizeof(u16)); | |
258 | ||
259 | /* read RR3_DRIVER_MAXLENS from ctrl msg */ | |
260 | data_vals = buffer + offset; | |
261 | ||
262 | for (i = 0; i < len; i++) { | |
263 | if (i % 10 == 0) | |
264 | pr_cont("\n * "); | |
265 | pr_cont("%02x ", *data_vals++); | |
266 | } | |
267 | ||
268 | pr_cont("\n"); | |
269 | } | |
270 | ||
271 | /* | |
272 | * redrat3_issue_async | |
273 | * | |
274 | * Issues an async read to the ir data in port.. | |
275 | * sets the callback to be redrat3_handle_async | |
276 | */ | |
277 | static void redrat3_issue_async(struct redrat3_dev *rr3) | |
278 | { | |
279 | int res; | |
280 | ||
281 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); | |
282 | ||
2154be65 JW |
283 | memset(rr3->bulk_in_buf, 0, rr3->ep_in->wMaxPacketSize); |
284 | res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC); | |
285 | if (res) | |
286 | rr3_dbg(rr3->dev, "%s: receive request FAILED! " | |
287 | "(res %d, len %d)\n", __func__, res, | |
288 | rr3->read_urb->transfer_buffer_length); | |
289 | } | |
290 | ||
291 | static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code) | |
292 | { | |
293 | if (!rr3->transmitting && (code != 0x40)) | |
294 | dev_info(rr3->dev, "fw error code 0x%02x: ", code); | |
295 | ||
296 | switch (code) { | |
297 | case 0x00: | |
298 | pr_cont("No Error\n"); | |
299 | break; | |
300 | ||
301 | /* Codes 0x20 through 0x2f are IR Firmware Errors */ | |
302 | case 0x20: | |
303 | pr_cont("Initial signal pulse not long enough " | |
304 | "to measure carrier frequency\n"); | |
305 | break; | |
306 | case 0x21: | |
307 | pr_cont("Not enough length values allocated for signal\n"); | |
308 | break; | |
309 | case 0x22: | |
310 | pr_cont("Not enough memory allocated for signal data\n"); | |
311 | break; | |
312 | case 0x23: | |
313 | pr_cont("Too many signal repeats\n"); | |
314 | break; | |
315 | case 0x28: | |
316 | pr_cont("Insufficient memory available for IR signal " | |
317 | "data memory allocation\n"); | |
318 | break; | |
319 | case 0x29: | |
320 | pr_cont("Insufficient memory available " | |
321 | "for IrDa signal data memory allocation\n"); | |
322 | break; | |
323 | ||
324 | /* Codes 0x30 through 0x3f are USB Firmware Errors */ | |
325 | case 0x30: | |
326 | pr_cont("Insufficient memory available for bulk " | |
327 | "transfer structure\n"); | |
328 | break; | |
329 | ||
330 | /* | |
331 | * Other error codes... These are primarily errors that can occur in | |
332 | * the control messages sent to the redrat | |
333 | */ | |
334 | case 0x40: | |
335 | if (!rr3->transmitting) | |
336 | pr_cont("Signal capture has been terminated\n"); | |
337 | break; | |
338 | case 0x41: | |
339 | pr_cont("Attempt to set/get and unknown signal I/O " | |
340 | "algorithm parameter\n"); | |
341 | break; | |
342 | case 0x42: | |
343 | pr_cont("Signal capture already started\n"); | |
344 | break; | |
345 | ||
346 | default: | |
347 | pr_cont("Unknown Error\n"); | |
348 | break; | |
349 | } | |
350 | } | |
351 | ||
352 | static u32 redrat3_val_to_mod_freq(struct redrat3_signal_header *ph) | |
353 | { | |
354 | u32 mod_freq = 0; | |
355 | ||
356 | if (ph->mod_freq_count != 0) | |
357 | mod_freq = (RR3_CLK * ph->no_periods) / | |
358 | (ph->mod_freq_count * RR3_CLK_PER_COUNT); | |
359 | ||
360 | return mod_freq; | |
361 | } | |
362 | ||
363 | /* this function scales down the figures for the same result... */ | |
364 | static u32 redrat3_len_to_us(u32 length) | |
365 | { | |
366 | u32 biglen = length * 1000; | |
367 | u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000; | |
368 | u32 result = (u32) (biglen / divisor); | |
369 | ||
370 | /* don't allow zero lengths to go back, breaks lirc */ | |
371 | return result ? result : 1; | |
372 | } | |
373 | ||
374 | /* | |
375 | * convert us back into redrat3 lengths | |
376 | * | |
377 | * length * 1000 length * 1000000 | |
378 | * ------------- = ---------------- = micro | |
379 | * rr3clk / 1000 rr3clk | |
380 | ||
381 | * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000 | |
382 | * ----- = 4 ----- = 6 -------------- = len --------------------- | |
383 | * 3 2 1000000 1000 | |
384 | */ | |
385 | static u32 redrat3_us_to_len(u32 microsec) | |
386 | { | |
387 | u32 result; | |
388 | u32 divisor; | |
389 | ||
390 | microsec &= IR_MAX_DURATION; | |
391 | divisor = (RR3_CLK_CONV_FACTOR / 1000); | |
392 | result = (u32)(microsec * divisor) / 1000; | |
393 | ||
394 | /* don't allow zero lengths to go back, breaks lirc */ | |
395 | return result ? result : 1; | |
2154be65 JW |
396 | } |
397 | ||
68b2a69d | 398 | /* timer callback to send reset event */ |
2154be65 JW |
399 | static void redrat3_rx_timeout(unsigned long data) |
400 | { | |
401 | struct redrat3_dev *rr3 = (struct redrat3_dev *)data; | |
2154be65 JW |
402 | |
403 | rr3_dbg(rr3->dev, "calling ir_raw_event_reset\n"); | |
404 | ir_raw_event_reset(rr3->rc); | |
405 | } | |
406 | ||
407 | static void redrat3_process_ir_data(struct redrat3_dev *rr3) | |
408 | { | |
409 | DEFINE_IR_RAW_EVENT(rawir); | |
410 | struct redrat3_signal_header header; | |
411 | struct device *dev; | |
c53f9f00 | 412 | int i, trailer = 0; |
2154be65 JW |
413 | unsigned long delay; |
414 | u32 mod_freq, single_len; | |
415 | u16 *len_vals; | |
416 | u8 *data_vals; | |
417 | u32 tmp32; | |
418 | u16 tmp16; | |
419 | char *sig_data; | |
420 | ||
421 | if (!rr3) { | |
422 | pr_err("%s called with no context!\n", __func__); | |
423 | return; | |
424 | } | |
425 | ||
426 | rr3_ftr(rr3->dev, "Entered %s\n", __func__); | |
427 | ||
428 | dev = rr3->dev; | |
429 | sig_data = rr3->pbuf; | |
430 | ||
431 | header.length = rr3->pktlen; | |
432 | header.transfer_type = rr3->pkttype; | |
433 | ||
434 | /* Sanity check */ | |
435 | if (!(header.length >= RR3_HEADER_LENGTH)) | |
436 | dev_warn(dev, "read returned less than rr3 header len\n"); | |
437 | ||
c53f9f00 JW |
438 | /* Make sure we reset the IR kfifo after a bit of inactivity */ |
439 | delay = usecs_to_jiffies(rr3->hw_timeout); | |
2154be65 JW |
440 | mod_timer(&rr3->rx_timeout, jiffies + delay); |
441 | ||
442 | memcpy(&tmp32, sig_data + RR3_PAUSE_OFFSET, sizeof(tmp32)); | |
443 | header.pause = be32_to_cpu(tmp32); | |
444 | ||
445 | memcpy(&tmp16, sig_data + RR3_FREQ_COUNT_OFFSET, sizeof(tmp16)); | |
446 | header.mod_freq_count = be16_to_cpu(tmp16); | |
447 | ||
448 | memcpy(&tmp16, sig_data + RR3_NUM_PERIOD_OFFSET, sizeof(tmp16)); | |
449 | header.no_periods = be16_to_cpu(tmp16); | |
450 | ||
451 | header.max_lengths = sig_data[RR3_MAX_LENGTHS_OFFSET]; | |
452 | header.no_lengths = sig_data[RR3_NUM_LENGTHS_OFFSET]; | |
453 | ||
454 | memcpy(&tmp16, sig_data + RR3_MAX_SIGS_OFFSET, sizeof(tmp16)); | |
455 | header.max_sig_size = be16_to_cpu(tmp16); | |
456 | ||
457 | memcpy(&tmp16, sig_data + RR3_NUM_SIGS_OFFSET, sizeof(tmp16)); | |
458 | header.sig_size = be16_to_cpu(tmp16); | |
459 | ||
460 | header.no_repeats= sig_data[RR3_REPEATS_OFFSET]; | |
461 | ||
462 | if (debug) { | |
463 | redrat3_dump_signal_header(&header); | |
464 | redrat3_dump_signal_data(sig_data, header.sig_size); | |
465 | } | |
466 | ||
467 | mod_freq = redrat3_val_to_mod_freq(&header); | |
468 | rr3_dbg(dev, "Got mod_freq of %u\n", mod_freq); | |
469 | ||
470 | /* Here we pull out the 'length' values from the signal */ | |
471 | len_vals = (u16 *)(sig_data + RR3_HEADER_LENGTH); | |
472 | ||
473 | data_vals = sig_data + RR3_HEADER_LENGTH + | |
474 | (header.max_lengths * sizeof(u16)); | |
475 | ||
476 | /* process each rr3 encoded byte into an int */ | |
477 | for (i = 0; i < header.sig_size; i++) { | |
478 | u16 val = len_vals[data_vals[i]]; | |
479 | single_len = redrat3_len_to_us((u32)be16_to_cpu(val)); | |
480 | ||
2154be65 JW |
481 | /* we should always get pulse/space/pulse/space samples */ |
482 | if (i % 2) | |
483 | rawir.pulse = false; | |
484 | else | |
485 | rawir.pulse = true; | |
486 | ||
487 | rawir.duration = US_TO_NS(single_len); | |
c53f9f00 JW |
488 | /* Save initial pulse length to fudge trailer */ |
489 | if (i == 0) | |
490 | trailer = rawir.duration; | |
2c594ffa JW |
491 | /* cap the value to IR_MAX_DURATION */ |
492 | rawir.duration &= IR_MAX_DURATION; | |
493 | ||
2154be65 JW |
494 | rr3_dbg(dev, "storing %s with duration %d (i: %d)\n", |
495 | rawir.pulse ? "pulse" : "space", rawir.duration, i); | |
496 | ir_raw_event_store_with_filter(rr3->rc, &rawir); | |
497 | } | |
498 | ||
499 | /* add a trailing space, if need be */ | |
500 | if (i % 2) { | |
501 | rawir.pulse = false; | |
502 | /* this duration is made up, and may not be ideal... */ | |
c53f9f00 JW |
503 | if (trailer < US_TO_NS(1000)) |
504 | rawir.duration = US_TO_NS(2800); | |
505 | else | |
506 | rawir.duration = trailer; | |
2154be65 JW |
507 | rr3_dbg(dev, "storing trailing space with duration %d\n", |
508 | rawir.duration); | |
509 | ir_raw_event_store_with_filter(rr3->rc, &rawir); | |
510 | } | |
511 | ||
512 | rr3_dbg(dev, "calling ir_raw_event_handle\n"); | |
513 | ir_raw_event_handle(rr3->rc); | |
2154be65 JW |
514 | } |
515 | ||
516 | /* Util fn to send rr3 cmds */ | |
517 | static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3) | |
518 | { | |
519 | struct usb_device *udev; | |
520 | u8 *data; | |
521 | int res; | |
522 | ||
523 | data = kzalloc(sizeof(u8), GFP_KERNEL); | |
524 | if (!data) | |
525 | return -ENOMEM; | |
526 | ||
527 | udev = rr3->udev; | |
528 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd, | |
529 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
530 | 0x0000, 0x0000, data, sizeof(u8), HZ * 10); | |
531 | ||
532 | if (res < 0) { | |
533 | dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d", | |
534 | __func__, res, *data); | |
535 | res = -EIO; | |
536 | } else | |
537 | res = (u8)data[0]; | |
538 | ||
539 | kfree(data); | |
540 | ||
541 | return res; | |
542 | } | |
543 | ||
544 | /* Enables the long range detector and starts async receive */ | |
545 | static int redrat3_enable_detector(struct redrat3_dev *rr3) | |
546 | { | |
547 | struct device *dev = rr3->dev; | |
548 | u8 ret; | |
549 | ||
550 | rr3_ftr(dev, "Entering %s\n", __func__); | |
551 | ||
552 | ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3); | |
553 | if (ret != 0) | |
554 | dev_dbg(dev, "%s: unexpected ret of %d\n", | |
555 | __func__, ret); | |
556 | ||
557 | ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); | |
558 | if (ret != 1) { | |
559 | dev_err(dev, "%s: detector status: %d, should be 1\n", | |
560 | __func__, ret); | |
561 | return -EIO; | |
562 | } | |
563 | ||
564 | rr3->det_enabled = true; | |
565 | redrat3_issue_async(rr3); | |
566 | ||
567 | return 0; | |
568 | } | |
569 | ||
570 | /* Disables the rr3 long range detector */ | |
571 | static void redrat3_disable_detector(struct redrat3_dev *rr3) | |
572 | { | |
573 | struct device *dev = rr3->dev; | |
574 | u8 ret; | |
575 | ||
576 | rr3_ftr(dev, "Entering %s\n", __func__); | |
577 | ||
578 | ret = redrat3_send_cmd(RR3_RC_DET_DISABLE, rr3); | |
579 | if (ret != 0) | |
580 | dev_err(dev, "%s: failure!\n", __func__); | |
581 | ||
582 | ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); | |
583 | if (ret != 0) | |
584 | dev_warn(dev, "%s: detector status: %d, should be 0\n", | |
585 | __func__, ret); | |
586 | ||
587 | rr3->det_enabled = false; | |
588 | } | |
589 | ||
590 | static inline void redrat3_delete(struct redrat3_dev *rr3, | |
591 | struct usb_device *udev) | |
592 | { | |
593 | rr3_ftr(rr3->dev, "%s cleaning up\n", __func__); | |
594 | usb_kill_urb(rr3->read_urb); | |
595 | usb_kill_urb(rr3->write_urb); | |
596 | ||
597 | usb_free_urb(rr3->read_urb); | |
598 | usb_free_urb(rr3->write_urb); | |
599 | ||
600 | usb_free_coherent(udev, rr3->ep_in->wMaxPacketSize, | |
601 | rr3->bulk_in_buf, rr3->dma_in); | |
602 | usb_free_coherent(udev, rr3->ep_out->wMaxPacketSize, | |
603 | rr3->bulk_out_buf, rr3->dma_out); | |
604 | ||
605 | kfree(rr3); | |
606 | } | |
607 | ||
c53f9f00 | 608 | static u32 redrat3_get_timeout(struct redrat3_dev *rr3) |
2154be65 | 609 | { |
801b69f2 | 610 | __be32 *tmp; |
c53f9f00 | 611 | u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */ |
2154be65 JW |
612 | int len, ret, pipe; |
613 | ||
614 | len = sizeof(*tmp); | |
615 | tmp = kzalloc(len, GFP_KERNEL); | |
616 | if (!tmp) { | |
c53f9f00 | 617 | dev_warn(rr3->dev, "Memory allocation faillure\n"); |
2154be65 JW |
618 | return timeout; |
619 | } | |
620 | ||
c53f9f00 JW |
621 | pipe = usb_rcvctrlpipe(rr3->udev, 0); |
622 | ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM, | |
2154be65 JW |
623 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
624 | RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5); | |
801b69f2 | 625 | if (ret != len) |
c53f9f00 | 626 | dev_warn(rr3->dev, "Failed to read timeout from hardware\n"); |
801b69f2 SY |
627 | else { |
628 | timeout = redrat3_len_to_us(be32_to_cpup(tmp)); | |
629 | ||
630 | rr3_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000); | |
2154be65 JW |
631 | } |
632 | ||
801b69f2 | 633 | kfree(tmp); |
2154be65 | 634 | |
2154be65 JW |
635 | return timeout; |
636 | } | |
637 | ||
638 | static void redrat3_reset(struct redrat3_dev *rr3) | |
639 | { | |
640 | struct usb_device *udev = rr3->udev; | |
641 | struct device *dev = rr3->dev; | |
642 | int rc, rxpipe, txpipe; | |
643 | u8 *val; | |
644 | int len = sizeof(u8); | |
645 | ||
646 | rr3_ftr(dev, "Entering %s\n", __func__); | |
647 | ||
648 | rxpipe = usb_rcvctrlpipe(udev, 0); | |
649 | txpipe = usb_sndctrlpipe(udev, 0); | |
650 | ||
651 | val = kzalloc(len, GFP_KERNEL); | |
652 | if (!val) { | |
653 | dev_err(dev, "Memory allocation failure\n"); | |
654 | return; | |
655 | } | |
656 | ||
657 | *val = 0x01; | |
658 | rc = usb_control_msg(udev, rxpipe, RR3_RESET, | |
659 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
660 | RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25); | |
661 | rr3_dbg(dev, "reset returned 0x%02x\n", rc); | |
662 | ||
663 | *val = 5; | |
664 | rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, | |
665 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, | |
666 | RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25); | |
667 | rr3_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc); | |
668 | ||
669 | *val = RR3_DRIVER_MAXLENS; | |
670 | rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, | |
671 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, | |
672 | RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25); | |
673 | rr3_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc); | |
674 | ||
675 | kfree(val); | |
676 | } | |
677 | ||
678 | static void redrat3_get_firmware_rev(struct redrat3_dev *rr3) | |
679 | { | |
680 | int rc = 0; | |
681 | char *buffer; | |
682 | ||
683 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); | |
684 | ||
685 | buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL); | |
686 | if (!buffer) { | |
687 | dev_err(rr3->dev, "Memory allocation failure\n"); | |
688 | return; | |
689 | } | |
690 | ||
691 | rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0), | |
692 | RR3_FW_VERSION, | |
693 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
694 | 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5); | |
695 | ||
696 | if (rc >= 0) | |
697 | dev_info(rr3->dev, "Firmware rev: %s", buffer); | |
698 | else | |
699 | dev_err(rr3->dev, "Problem fetching firmware ID\n"); | |
700 | ||
701 | kfree(buffer); | |
702 | rr3_ftr(rr3->dev, "Exiting %s\n", __func__); | |
703 | } | |
704 | ||
705 | static void redrat3_read_packet_start(struct redrat3_dev *rr3, int len) | |
706 | { | |
707 | u16 tx_error; | |
708 | u16 hdrlen; | |
709 | ||
710 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); | |
711 | ||
712 | /* grab the Length and type of transfer */ | |
713 | memcpy(&(rr3->pktlen), (unsigned char *) rr3->bulk_in_buf, | |
714 | sizeof(rr3->pktlen)); | |
715 | memcpy(&(rr3->pkttype), ((unsigned char *) rr3->bulk_in_buf + | |
716 | sizeof(rr3->pktlen)), | |
717 | sizeof(rr3->pkttype)); | |
718 | ||
719 | /*data needs conversion to know what its real values are*/ | |
720 | rr3->pktlen = be16_to_cpu(rr3->pktlen); | |
721 | rr3->pkttype = be16_to_cpu(rr3->pkttype); | |
722 | ||
723 | switch (rr3->pkttype) { | |
724 | case RR3_ERROR: | |
725 | memcpy(&tx_error, ((unsigned char *)rr3->bulk_in_buf | |
726 | + (sizeof(rr3->pktlen) + sizeof(rr3->pkttype))), | |
727 | sizeof(tx_error)); | |
728 | tx_error = be16_to_cpu(tx_error); | |
729 | redrat3_dump_fw_error(rr3, tx_error); | |
730 | break; | |
731 | ||
732 | case RR3_MOD_SIGNAL_IN: | |
733 | hdrlen = sizeof(rr3->pktlen) + sizeof(rr3->pkttype); | |
734 | rr3->bytes_read = len; | |
735 | rr3->bytes_read -= hdrlen; | |
736 | rr3->datap = &(rr3->pbuf[0]); | |
737 | ||
738 | memcpy(rr3->datap, ((unsigned char *)rr3->bulk_in_buf + hdrlen), | |
739 | rr3->bytes_read); | |
740 | rr3->datap += rr3->bytes_read; | |
741 | rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", | |
742 | rr3->bytes_read, rr3->pktlen); | |
743 | break; | |
744 | ||
745 | default: | |
746 | rr3_dbg(rr3->dev, "ignoring packet with type 0x%02x, " | |
747 | "len of %d, 0x%02x\n", rr3->pkttype, len, rr3->pktlen); | |
748 | break; | |
749 | } | |
750 | } | |
751 | ||
752 | static void redrat3_read_packet_continue(struct redrat3_dev *rr3, int len) | |
753 | { | |
2154be65 JW |
754 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); |
755 | ||
756 | memcpy(rr3->datap, (unsigned char *)rr3->bulk_in_buf, len); | |
757 | rr3->datap += len; | |
758 | ||
759 | rr3->bytes_read += len; | |
760 | rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", | |
761 | rr3->bytes_read, rr3->pktlen); | |
762 | } | |
763 | ||
764 | /* gather IR data from incoming urb, process it when we have enough */ | |
765 | static int redrat3_get_ir_data(struct redrat3_dev *rr3, int len) | |
766 | { | |
767 | struct device *dev = rr3->dev; | |
768 | int ret = 0; | |
769 | ||
770 | rr3_ftr(dev, "Entering %s\n", __func__); | |
771 | ||
772 | if (rr3->pktlen > RR3_MAX_BUF_SIZE) { | |
773 | dev_err(rr3->dev, "error: packet larger than buffer\n"); | |
774 | ret = -EINVAL; | |
775 | goto out; | |
776 | } | |
777 | ||
778 | if ((rr3->bytes_read == 0) && | |
779 | (len >= (sizeof(rr3->pkttype) + sizeof(rr3->pktlen)))) { | |
780 | redrat3_read_packet_start(rr3, len); | |
781 | } else if (rr3->bytes_read != 0) { | |
782 | redrat3_read_packet_continue(rr3, len); | |
783 | } else if (rr3->bytes_read == 0) { | |
784 | dev_err(dev, "error: no packet data read\n"); | |
785 | ret = -ENODATA; | |
786 | goto out; | |
787 | } | |
788 | ||
789 | if (rr3->bytes_read > rr3->pktlen) { | |
790 | dev_err(dev, "bytes_read (%d) greater than pktlen (%d)\n", | |
791 | rr3->bytes_read, rr3->pktlen); | |
792 | ret = -EINVAL; | |
793 | goto out; | |
794 | } else if (rr3->bytes_read < rr3->pktlen) | |
795 | /* we're still accumulating data */ | |
796 | return 0; | |
797 | ||
798 | /* if we get here, we've got IR data to decode */ | |
799 | if (rr3->pkttype == RR3_MOD_SIGNAL_IN) | |
800 | redrat3_process_ir_data(rr3); | |
801 | else | |
802 | rr3_dbg(dev, "discarding non-signal data packet " | |
803 | "(type 0x%02x)\n", rr3->pkttype); | |
804 | ||
805 | out: | |
806 | rr3->bytes_read = 0; | |
807 | rr3->pktlen = 0; | |
808 | rr3->pkttype = 0; | |
809 | return ret; | |
810 | } | |
811 | ||
812 | /* callback function from USB when async USB request has completed */ | |
801b69f2 | 813 | static void redrat3_handle_async(struct urb *urb) |
2154be65 JW |
814 | { |
815 | struct redrat3_dev *rr3; | |
dbea1880 | 816 | int ret; |
2154be65 JW |
817 | |
818 | if (!urb) | |
819 | return; | |
820 | ||
821 | rr3 = urb->context; | |
822 | if (!rr3) { | |
823 | pr_err("%s called with invalid context!\n", __func__); | |
824 | usb_unlink_urb(urb); | |
825 | return; | |
826 | } | |
827 | ||
828 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); | |
829 | ||
2154be65 JW |
830 | switch (urb->status) { |
831 | case 0: | |
dbea1880 AV |
832 | ret = redrat3_get_ir_data(rr3, urb->actual_length); |
833 | if (!ret) { | |
834 | /* no error, prepare to read more */ | |
835 | redrat3_issue_async(rr3); | |
836 | } | |
2154be65 JW |
837 | break; |
838 | ||
839 | case -ECONNRESET: | |
840 | case -ENOENT: | |
841 | case -ESHUTDOWN: | |
842 | usb_unlink_urb(urb); | |
843 | return; | |
844 | ||
845 | case -EPIPE: | |
846 | default: | |
847 | dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status); | |
848 | rr3->bytes_read = 0; | |
849 | rr3->pktlen = 0; | |
850 | rr3->pkttype = 0; | |
851 | break; | |
852 | } | |
2154be65 JW |
853 | } |
854 | ||
801b69f2 | 855 | static void redrat3_write_bulk_callback(struct urb *urb) |
2154be65 JW |
856 | { |
857 | struct redrat3_dev *rr3; | |
858 | int len; | |
859 | ||
860 | if (!urb) | |
861 | return; | |
862 | ||
863 | rr3 = urb->context; | |
864 | if (rr3) { | |
865 | len = urb->actual_length; | |
866 | rr3_ftr(rr3->dev, "%s: called (status=%d len=%d)\n", | |
867 | __func__, urb->status, len); | |
868 | } | |
869 | } | |
870 | ||
871 | static u16 mod_freq_to_val(unsigned int mod_freq) | |
872 | { | |
873 | int mult = 6000000; | |
874 | ||
875 | /* Clk used in mod. freq. generation is CLK24/4. */ | |
876 | return (u16)(65536 - (mult / mod_freq)); | |
877 | } | |
878 | ||
dbea1880 | 879 | static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier) |
2154be65 | 880 | { |
dbea1880 AV |
881 | struct redrat3_dev *rr3 = rcdev->priv; |
882 | struct device *dev = rr3->dev; | |
2154be65 | 883 | |
dbea1880 | 884 | rr3_dbg(dev, "Setting modulation frequency to %u", carrier); |
48cafec9 DC |
885 | if (carrier == 0) |
886 | return -EINVAL; | |
887 | ||
2154be65 JW |
888 | rr3->carrier = carrier; |
889 | ||
890 | return carrier; | |
891 | } | |
892 | ||
dbea1880 AV |
893 | static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf, |
894 | unsigned count) | |
2154be65 JW |
895 | { |
896 | struct redrat3_dev *rr3 = rcdev->priv; | |
897 | struct device *dev = rr3->dev; | |
898 | struct redrat3_signal_header header; | |
801b69f2 | 899 | int i, ret, ret_len, offset; |
2154be65 JW |
900 | int lencheck, cur_sample_len, pipe; |
901 | char *buffer = NULL, *sigdata = NULL; | |
902 | int *sample_lens = NULL; | |
903 | u32 tmpi; | |
904 | u16 tmps; | |
905 | u8 *datap; | |
906 | u8 curlencheck = 0; | |
907 | u16 *lengths_ptr; | |
908 | int sendbuf_len; | |
909 | ||
910 | rr3_ftr(dev, "Entering %s\n", __func__); | |
911 | ||
912 | if (rr3->transmitting) { | |
913 | dev_warn(dev, "%s: transmitter already in use\n", __func__); | |
914 | return -EAGAIN; | |
915 | } | |
916 | ||
06eae25f | 917 | count = min_t(unsigned, count, RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN); |
2154be65 | 918 | |
dbea1880 AV |
919 | /* rr3 will disable rc detector on transmit */ |
920 | rr3->det_enabled = false; | |
2154be65 JW |
921 | rr3->transmitting = true; |
922 | ||
2154be65 JW |
923 | sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL); |
924 | if (!sample_lens) { | |
925 | ret = -ENOMEM; | |
926 | goto out; | |
927 | } | |
928 | ||
801b69f2 SY |
929 | sigdata = kzalloc((count + RR3_TX_TRAILER_LEN), GFP_KERNEL); |
930 | if (!sigdata) { | |
931 | ret = -ENOMEM; | |
932 | goto out; | |
933 | } | |
934 | ||
2154be65 | 935 | for (i = 0; i < count; i++) { |
06eae25f | 936 | cur_sample_len = redrat3_us_to_len(txbuf[i]); |
801b69f2 SY |
937 | if (cur_sample_len > 0xffff) { |
938 | dev_warn(dev, "transmit period of %uus truncated to %uus\n", | |
939 | txbuf[i], redrat3_len_to_us(0xffff)); | |
940 | cur_sample_len = 0xffff; | |
941 | } | |
2154be65 | 942 | for (lencheck = 0; lencheck < curlencheck; lencheck++) { |
2154be65 JW |
943 | if (sample_lens[lencheck] == cur_sample_len) |
944 | break; | |
945 | } | |
946 | if (lencheck == curlencheck) { | |
2154be65 JW |
947 | rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n", |
948 | i, txbuf[i], curlencheck, cur_sample_len); | |
06eae25f | 949 | if (curlencheck < RR3_DRIVER_MAXLENS) { |
2154be65 JW |
950 | /* now convert the value to a proper |
951 | * rr3 value.. */ | |
952 | sample_lens[curlencheck] = cur_sample_len; | |
953 | curlencheck++; | |
954 | } else { | |
06eae25f SY |
955 | count = i - 1; |
956 | break; | |
2154be65 JW |
957 | } |
958 | } | |
801b69f2 | 959 | sigdata[i] = lencheck; |
2154be65 JW |
960 | } |
961 | ||
962 | sigdata[count] = RR3_END_OF_SIGNAL; | |
963 | sigdata[count + 1] = RR3_END_OF_SIGNAL; | |
2154be65 JW |
964 | |
965 | offset = RR3_TX_HEADER_OFFSET; | |
966 | sendbuf_len = RR3_HEADER_LENGTH + (sizeof(u16) * RR3_DRIVER_MAXLENS) | |
967 | + count + RR3_TX_TRAILER_LEN + offset; | |
968 | ||
969 | buffer = kzalloc(sendbuf_len, GFP_KERNEL); | |
970 | if (!buffer) { | |
971 | ret = -ENOMEM; | |
972 | goto out; | |
973 | } | |
974 | ||
975 | /* fill in our packet header */ | |
976 | header.length = sendbuf_len - offset; | |
977 | header.transfer_type = RR3_MOD_SIGNAL_OUT; | |
978 | header.pause = redrat3_len_to_us(100); | |
979 | header.mod_freq_count = mod_freq_to_val(rr3->carrier); | |
980 | header.no_periods = 0; /* n/a to transmit */ | |
981 | header.max_lengths = RR3_DRIVER_MAXLENS; | |
982 | header.no_lengths = curlencheck; | |
983 | header.max_sig_size = RR3_MAX_SIG_SIZE; | |
984 | header.sig_size = count + RR3_TX_TRAILER_LEN; | |
985 | /* we currently rely on repeat handling in the IR encoding source */ | |
986 | header.no_repeats = 0; | |
987 | ||
988 | tmps = cpu_to_be16(header.length); | |
989 | memcpy(buffer, &tmps, 2); | |
990 | ||
991 | tmps = cpu_to_be16(header.transfer_type); | |
992 | memcpy(buffer + 2, &tmps, 2); | |
993 | ||
994 | tmpi = cpu_to_be32(header.pause); | |
995 | memcpy(buffer + offset, &tmpi, sizeof(tmpi)); | |
996 | ||
997 | tmps = cpu_to_be16(header.mod_freq_count); | |
998 | memcpy(buffer + offset + RR3_FREQ_COUNT_OFFSET, &tmps, 2); | |
999 | ||
1000 | buffer[offset + RR3_NUM_LENGTHS_OFFSET] = header.no_lengths; | |
1001 | ||
1002 | tmps = cpu_to_be16(header.sig_size); | |
1003 | memcpy(buffer + offset + RR3_NUM_SIGS_OFFSET, &tmps, 2); | |
1004 | ||
1005 | buffer[offset + RR3_REPEATS_OFFSET] = header.no_repeats; | |
1006 | ||
1007 | lengths_ptr = (u16 *)(buffer + offset + RR3_HEADER_LENGTH); | |
1008 | for (i = 0; i < curlencheck; ++i) | |
1009 | lengths_ptr[i] = cpu_to_be16(sample_lens[i]); | |
1010 | ||
1011 | datap = (u8 *)(buffer + offset + RR3_HEADER_LENGTH + | |
1012 | (sizeof(u16) * RR3_DRIVER_MAXLENS)); | |
1013 | memcpy(datap, sigdata, (count + RR3_TX_TRAILER_LEN)); | |
1014 | ||
1015 | if (debug) { | |
1016 | redrat3_dump_signal_header(&header); | |
1017 | redrat3_dump_signal_data(buffer, header.sig_size); | |
1018 | } | |
1019 | ||
1020 | pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress); | |
1021 | tmps = usb_bulk_msg(rr3->udev, pipe, buffer, | |
1022 | sendbuf_len, &ret_len, 10 * HZ); | |
1023 | rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, tmps); | |
1024 | ||
1025 | /* now tell the hardware to transmit what we sent it */ | |
1026 | pipe = usb_rcvctrlpipe(rr3->udev, 0); | |
1027 | ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL, | |
1028 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
1029 | 0, 0, buffer, 2, HZ * 10); | |
1030 | ||
1031 | if (ret < 0) | |
1032 | dev_err(dev, "Error: control msg send failed, rc %d\n", ret); | |
1033 | else | |
dbea1880 | 1034 | ret = count; |
2154be65 JW |
1035 | |
1036 | out: | |
1037 | kfree(sample_lens); | |
1038 | kfree(buffer); | |
1039 | kfree(sigdata); | |
1040 | ||
1041 | rr3->transmitting = false; | |
dbea1880 AV |
1042 | /* rr3 re-enables rc detector because it was enabled before */ |
1043 | rr3->det_enabled = true; | |
2154be65 JW |
1044 | |
1045 | return ret; | |
1046 | } | |
1047 | ||
1048 | static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) | |
1049 | { | |
1050 | struct device *dev = rr3->dev; | |
1051 | struct rc_dev *rc; | |
1052 | int ret = -ENODEV; | |
1053 | u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct); | |
1054 | ||
1055 | rc = rc_allocate_device(); | |
1056 | if (!rc) { | |
1057 | dev_err(dev, "remote input dev allocation failed\n"); | |
1058 | goto out; | |
1059 | } | |
1060 | ||
1061 | snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s " | |
1062 | "Infrared Remote Transceiver (%04x:%04x)", | |
1063 | prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "", | |
1064 | le16_to_cpu(rr3->udev->descriptor.idVendor), prod); | |
1065 | ||
1066 | usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys)); | |
1067 | ||
1068 | rc->input_name = rr3->name; | |
1069 | rc->input_phys = rr3->phys; | |
1070 | usb_to_input_id(rr3->udev, &rc->input_id); | |
1071 | rc->dev.parent = dev; | |
1072 | rc->priv = rr3; | |
1073 | rc->driver_type = RC_DRIVER_IR_RAW; | |
c003ab1b | 1074 | rc->allowed_protos = RC_BIT_ALL; |
c53f9f00 | 1075 | rc->timeout = US_TO_NS(2750); |
2154be65 JW |
1076 | rc->tx_ir = redrat3_transmit_ir; |
1077 | rc->s_tx_carrier = redrat3_set_tx_carrier; | |
1078 | rc->driver_name = DRIVER_NAME; | |
06eae25f | 1079 | rc->rx_resolution = US_TO_NS(2); |
2154be65 JW |
1080 | rc->map_name = RC_MAP_HAUPPAUGE; |
1081 | ||
1082 | ret = rc_register_device(rc); | |
1083 | if (ret < 0) { | |
1084 | dev_err(dev, "remote dev registration failed\n"); | |
1085 | goto out; | |
1086 | } | |
1087 | ||
1088 | return rc; | |
1089 | ||
1090 | out: | |
1091 | rc_free_device(rc); | |
1092 | return NULL; | |
1093 | } | |
1094 | ||
4c62e976 GKH |
1095 | static int redrat3_dev_probe(struct usb_interface *intf, |
1096 | const struct usb_device_id *id) | |
2154be65 JW |
1097 | { |
1098 | struct usb_device *udev = interface_to_usbdev(intf); | |
1099 | struct device *dev = &intf->dev; | |
1100 | struct usb_host_interface *uhi; | |
1101 | struct redrat3_dev *rr3; | |
1102 | struct usb_endpoint_descriptor *ep; | |
1103 | struct usb_endpoint_descriptor *ep_in = NULL; | |
1104 | struct usb_endpoint_descriptor *ep_out = NULL; | |
1105 | u8 addr, attrs; | |
1106 | int pipe, i; | |
1107 | int retval = -ENOMEM; | |
1108 | ||
1109 | rr3_ftr(dev, "%s called\n", __func__); | |
1110 | ||
1111 | uhi = intf->cur_altsetting; | |
1112 | ||
1113 | /* find our bulk-in and bulk-out endpoints */ | |
1114 | for (i = 0; i < uhi->desc.bNumEndpoints; ++i) { | |
1115 | ep = &uhi->endpoint[i].desc; | |
1116 | addr = ep->bEndpointAddress; | |
1117 | attrs = ep->bmAttributes; | |
1118 | ||
1119 | if ((ep_in == NULL) && | |
1120 | ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && | |
1121 | ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == | |
1122 | USB_ENDPOINT_XFER_BULK)) { | |
1123 | rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n", | |
1124 | ep->bEndpointAddress); | |
1125 | /* data comes in on 0x82, 0x81 is for other data... */ | |
1126 | if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR) | |
1127 | ep_in = ep; | |
1128 | } | |
1129 | ||
1130 | if ((ep_out == NULL) && | |
1131 | ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && | |
1132 | ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == | |
1133 | USB_ENDPOINT_XFER_BULK)) { | |
1134 | rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n", | |
1135 | ep->bEndpointAddress); | |
1136 | ep_out = ep; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | if (!ep_in || !ep_out) { | |
1141 | dev_err(dev, "Couldn't find both in and out endpoints\n"); | |
1142 | retval = -ENODEV; | |
1143 | goto no_endpoints; | |
1144 | } | |
1145 | ||
1146 | /* allocate memory for our device state and initialize it */ | |
1147 | rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL); | |
1148 | if (rr3 == NULL) { | |
1149 | dev_err(dev, "Memory allocation failure\n"); | |
7eb75715 | 1150 | goto no_endpoints; |
2154be65 JW |
1151 | } |
1152 | ||
1153 | rr3->dev = &intf->dev; | |
1154 | ||
1155 | /* set up bulk-in endpoint */ | |
1156 | rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1157 | if (!rr3->read_urb) { | |
1158 | dev_err(dev, "Read urb allocation failure\n"); | |
1159 | goto error; | |
1160 | } | |
1161 | ||
1162 | rr3->ep_in = ep_in; | |
1163 | rr3->bulk_in_buf = usb_alloc_coherent(udev, ep_in->wMaxPacketSize, | |
1164 | GFP_ATOMIC, &rr3->dma_in); | |
1165 | if (!rr3->bulk_in_buf) { | |
1166 | dev_err(dev, "Read buffer allocation failure\n"); | |
1167 | goto error; | |
1168 | } | |
1169 | ||
1170 | pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress); | |
1171 | usb_fill_bulk_urb(rr3->read_urb, udev, pipe, | |
1172 | rr3->bulk_in_buf, ep_in->wMaxPacketSize, | |
801b69f2 | 1173 | redrat3_handle_async, rr3); |
2154be65 JW |
1174 | |
1175 | /* set up bulk-out endpoint*/ | |
1176 | rr3->write_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1177 | if (!rr3->write_urb) { | |
1178 | dev_err(dev, "Write urb allocation failure\n"); | |
1179 | goto error; | |
1180 | } | |
1181 | ||
1182 | rr3->ep_out = ep_out; | |
1183 | rr3->bulk_out_buf = usb_alloc_coherent(udev, ep_out->wMaxPacketSize, | |
1184 | GFP_ATOMIC, &rr3->dma_out); | |
1185 | if (!rr3->bulk_out_buf) { | |
1186 | dev_err(dev, "Write buffer allocation failure\n"); | |
1187 | goto error; | |
1188 | } | |
1189 | ||
1190 | pipe = usb_sndbulkpipe(udev, ep_out->bEndpointAddress); | |
1191 | usb_fill_bulk_urb(rr3->write_urb, udev, pipe, | |
1192 | rr3->bulk_out_buf, ep_out->wMaxPacketSize, | |
801b69f2 | 1193 | redrat3_write_bulk_callback, rr3); |
2154be65 | 1194 | |
2154be65 JW |
1195 | rr3->udev = udev; |
1196 | ||
1197 | redrat3_reset(rr3); | |
1198 | redrat3_get_firmware_rev(rr3); | |
1199 | ||
1200 | /* might be all we need to do? */ | |
1201 | retval = redrat3_enable_detector(rr3); | |
1202 | if (retval < 0) | |
1203 | goto error; | |
1204 | ||
c53f9f00 JW |
1205 | /* store current hardware timeout, in us, will use for kfifo resets */ |
1206 | rr3->hw_timeout = redrat3_get_timeout(rr3); | |
1207 | ||
2154be65 JW |
1208 | /* default.. will get overridden by any sends with a freq defined */ |
1209 | rr3->carrier = 38000; | |
1210 | ||
1211 | rr3->rc = redrat3_init_rc_dev(rr3); | |
6ea7cf76 PST |
1212 | if (!rr3->rc) { |
1213 | retval = -ENOMEM; | |
2154be65 | 1214 | goto error; |
6ea7cf76 | 1215 | } |
2154be65 JW |
1216 | setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3); |
1217 | ||
1218 | /* we can register the device now, as it is ready */ | |
1219 | usb_set_intfdata(intf, rr3); | |
1220 | ||
1221 | rr3_ftr(dev, "Exiting %s\n", __func__); | |
1222 | return 0; | |
1223 | ||
1224 | error: | |
1225 | redrat3_delete(rr3, rr3->udev); | |
1226 | ||
1227 | no_endpoints: | |
1228 | dev_err(dev, "%s: retval = %x", __func__, retval); | |
1229 | ||
1230 | return retval; | |
1231 | } | |
1232 | ||
4c62e976 | 1233 | static void redrat3_dev_disconnect(struct usb_interface *intf) |
2154be65 JW |
1234 | { |
1235 | struct usb_device *udev = interface_to_usbdev(intf); | |
1236 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
1237 | ||
1238 | rr3_ftr(&intf->dev, "Entering %s\n", __func__); | |
1239 | ||
1240 | if (!rr3) | |
1241 | return; | |
1242 | ||
1243 | redrat3_disable_detector(rr3); | |
1244 | ||
1245 | usb_set_intfdata(intf, NULL); | |
1246 | rc_unregister_device(rr3->rc); | |
c53f9f00 | 1247 | del_timer_sync(&rr3->rx_timeout); |
2154be65 JW |
1248 | redrat3_delete(rr3, udev); |
1249 | ||
1250 | rr3_ftr(&intf->dev, "RedRat3 IR Transceiver now disconnected\n"); | |
1251 | } | |
1252 | ||
1253 | static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message) | |
1254 | { | |
1255 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
1256 | rr3_ftr(rr3->dev, "suspend\n"); | |
1257 | usb_kill_urb(rr3->read_urb); | |
1258 | return 0; | |
1259 | } | |
1260 | ||
1261 | static int redrat3_dev_resume(struct usb_interface *intf) | |
1262 | { | |
1263 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
1264 | rr3_ftr(rr3->dev, "resume\n"); | |
1265 | if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC)) | |
1266 | return -EIO; | |
1267 | return 0; | |
1268 | } | |
1269 | ||
1270 | static struct usb_driver redrat3_dev_driver = { | |
1271 | .name = DRIVER_NAME, | |
1272 | .probe = redrat3_dev_probe, | |
4c62e976 | 1273 | .disconnect = redrat3_dev_disconnect, |
2154be65 JW |
1274 | .suspend = redrat3_dev_suspend, |
1275 | .resume = redrat3_dev_resume, | |
1276 | .reset_resume = redrat3_dev_resume, | |
1277 | .id_table = redrat3_dev_table | |
1278 | }; | |
1279 | ||
ecb3b2b3 | 1280 | module_usb_driver(redrat3_dev_driver); |
2154be65 JW |
1281 | |
1282 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1283 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1284 | MODULE_AUTHOR(DRIVER_AUTHOR2); | |
1285 | MODULE_LICENSE("GPL"); | |
1286 | MODULE_DEVICE_TABLE(usb, redrat3_dev_table); | |
1287 | ||
1288 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
1289 | MODULE_PARM_DESC(debug, "Enable module debug spew. 0 = no debugging (default) " | |
1290 | "0x1 = standard debug messages, 0x2 = function tracing debug. " | |
1291 | "Flag bits are addative (i.e., 0x3 for both debug types)."); |