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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 | ||
4c055a5a | 48 | #include <asm/unaligned.h> |
2154be65 | 49 | #include <linux/device.h> |
bf139726 | 50 | #include <linux/leds.h> |
2154be65 JW |
51 | #include <linux/module.h> |
52 | #include <linux/slab.h> | |
53 | #include <linux/usb.h> | |
54 | #include <linux/usb/input.h> | |
55 | #include <media/rc-core.h> | |
56 | ||
57 | /* Driver Information */ | |
2154be65 JW |
58 | #define DRIVER_AUTHOR "Jarod Wilson <jarod@redhat.com>" |
59 | #define DRIVER_AUTHOR2 "The Dweller, Stephen Cox" | |
60 | #define DRIVER_DESC "RedRat3 USB IR Transceiver Driver" | |
61 | #define DRIVER_NAME "redrat3" | |
62 | ||
63 | /* module parameters */ | |
64 | #ifdef CONFIG_USB_DEBUG | |
65 | static int debug = 1; | |
66 | #else | |
67 | static int debug; | |
68 | #endif | |
69 | ||
70 | #define RR3_DEBUG_STANDARD 0x1 | |
71 | #define RR3_DEBUG_FUNCTION_TRACE 0x2 | |
72 | ||
73 | #define rr3_dbg(dev, fmt, ...) \ | |
74 | do { \ | |
75 | if (debug & RR3_DEBUG_STANDARD) \ | |
76 | dev_info(dev, fmt, ## __VA_ARGS__); \ | |
77 | } while (0) | |
78 | ||
79 | #define rr3_ftr(dev, fmt, ...) \ | |
80 | do { \ | |
81 | if (debug & RR3_DEBUG_FUNCTION_TRACE) \ | |
82 | dev_info(dev, fmt, ## __VA_ARGS__); \ | |
83 | } while (0) | |
84 | ||
85 | /* bulk data transfer types */ | |
86 | #define RR3_ERROR 0x01 | |
87 | #define RR3_MOD_SIGNAL_IN 0x20 | |
88 | #define RR3_MOD_SIGNAL_OUT 0x21 | |
89 | ||
90 | /* Get the RR firmware version */ | |
91 | #define RR3_FW_VERSION 0xb1 | |
92 | #define RR3_FW_VERSION_LEN 64 | |
93 | /* Send encoded signal bulk-sent earlier*/ | |
94 | #define RR3_TX_SEND_SIGNAL 0xb3 | |
95 | #define RR3_SET_IR_PARAM 0xb7 | |
96 | #define RR3_GET_IR_PARAM 0xb8 | |
97 | /* Blink the red LED on the device */ | |
98 | #define RR3_BLINK_LED 0xb9 | |
99 | /* Read serial number of device */ | |
100 | #define RR3_READ_SER_NO 0xba | |
101 | #define RR3_SER_NO_LEN 4 | |
102 | /* Start capture with the RC receiver */ | |
103 | #define RR3_RC_DET_ENABLE 0xbb | |
104 | /* Stop capture with the RC receiver */ | |
105 | #define RR3_RC_DET_DISABLE 0xbc | |
106 | /* Return the status of RC detector capture */ | |
107 | #define RR3_RC_DET_STATUS 0xbd | |
108 | /* Reset redrat */ | |
109 | #define RR3_RESET 0xa0 | |
110 | ||
111 | /* Max number of lengths in the signal. */ | |
112 | #define RR3_IR_IO_MAX_LENGTHS 0x01 | |
113 | /* Periods to measure mod. freq. */ | |
114 | #define RR3_IR_IO_PERIODS_MF 0x02 | |
115 | /* Size of memory for main signal data */ | |
116 | #define RR3_IR_IO_SIG_MEM_SIZE 0x03 | |
117 | /* Delta value when measuring lengths */ | |
118 | #define RR3_IR_IO_LENGTH_FUZZ 0x04 | |
119 | /* Timeout for end of signal detection */ | |
120 | #define RR3_IR_IO_SIG_TIMEOUT 0x05 | |
121 | /* Minumum value for pause recognition. */ | |
122 | #define RR3_IR_IO_MIN_PAUSE 0x06 | |
123 | ||
124 | /* Clock freq. of EZ-USB chip */ | |
125 | #define RR3_CLK 24000000 | |
126 | /* Clock periods per timer count */ | |
127 | #define RR3_CLK_PER_COUNT 12 | |
128 | /* (RR3_CLK / RR3_CLK_PER_COUNT) */ | |
129 | #define RR3_CLK_CONV_FACTOR 2000000 | |
130 | /* USB bulk-in IR data endpoint address */ | |
131 | #define RR3_BULK_IN_EP_ADDR 0x82 | |
132 | ||
2154be65 | 133 | /* Size of the fixed-length portion of the signal */ |
2154be65 JW |
134 | #define RR3_DRIVER_MAXLENS 128 |
135 | #define RR3_MAX_SIG_SIZE 512 | |
2154be65 JW |
136 | #define RR3_TIME_UNIT 50 |
137 | #define RR3_END_OF_SIGNAL 0x7f | |
2154be65 JW |
138 | #define RR3_TX_TRAILER_LEN 2 |
139 | #define RR3_RX_MIN_TIMEOUT 5 | |
140 | #define RR3_RX_MAX_TIMEOUT 2000 | |
141 | ||
142 | /* The 8051's CPUCS Register address */ | |
143 | #define RR3_CPUCS_REG_ADDR 0x7f92 | |
144 | ||
145 | #define USB_RR3USB_VENDOR_ID 0x112a | |
146 | #define USB_RR3USB_PRODUCT_ID 0x0001 | |
147 | #define USB_RR3IIUSB_PRODUCT_ID 0x0005 | |
148 | ||
4c055a5a SY |
149 | struct redrat3_header { |
150 | __be16 length; | |
151 | __be16 transfer_type; | |
152 | } __packed; | |
153 | ||
154 | /* sending and receiving irdata */ | |
155 | struct redrat3_irdata { | |
156 | struct redrat3_header header; | |
157 | __be32 pause; | |
158 | __be16 mod_freq_count; | |
159 | __be16 num_periods; | |
160 | __u8 max_lengths; | |
161 | __u8 no_lengths; | |
162 | __be16 max_sig_size; | |
163 | __be16 sig_size; | |
164 | __u8 no_repeats; | |
165 | __be16 lens[RR3_DRIVER_MAXLENS]; /* not aligned */ | |
166 | __u8 sigdata[RR3_MAX_SIG_SIZE]; | |
167 | } __packed; | |
168 | ||
169 | /* firmware errors */ | |
170 | struct redrat3_error { | |
171 | struct redrat3_header header; | |
172 | __be16 fw_error; | |
173 | } __packed; | |
174 | ||
2154be65 JW |
175 | /* table of devices that work with this driver */ |
176 | static struct usb_device_id redrat3_dev_table[] = { | |
177 | /* Original version of the RedRat3 */ | |
178 | {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)}, | |
179 | /* Second Version/release of the RedRat3 - RetRat3-II */ | |
180 | {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)}, | |
181 | {} /* Terminating entry */ | |
182 | }; | |
183 | ||
184 | /* Structure to hold all of our device specific stuff */ | |
185 | struct redrat3_dev { | |
186 | /* core device bits */ | |
187 | struct rc_dev *rc; | |
188 | struct device *dev; | |
189 | ||
bf139726 SY |
190 | /* led control */ |
191 | struct led_classdev led; | |
192 | atomic_t flash; | |
193 | struct usb_ctrlrequest flash_control; | |
194 | struct urb *flash_urb; | |
195 | u8 flash_in_buf; | |
196 | ||
2154be65 JW |
197 | /* save off the usb device pointer */ |
198 | struct usb_device *udev; | |
199 | ||
200 | /* the receive endpoint */ | |
201 | struct usb_endpoint_descriptor *ep_in; | |
202 | /* the buffer to receive data */ | |
4c055a5a | 203 | void *bulk_in_buf; |
2154be65 JW |
204 | /* urb used to read ir data */ |
205 | struct urb *read_urb; | |
206 | ||
207 | /* the send endpoint */ | |
208 | struct usb_endpoint_descriptor *ep_out; | |
2154be65 JW |
209 | |
210 | /* usb dma */ | |
211 | dma_addr_t dma_in; | |
2154be65 | 212 | |
2154be65 JW |
213 | /* rx signal timeout timer */ |
214 | struct timer_list rx_timeout; | |
c53f9f00 | 215 | u32 hw_timeout; |
2154be65 | 216 | |
2154be65 JW |
217 | /* Is the device currently transmitting?*/ |
218 | bool transmitting; | |
219 | ||
220 | /* store for current packet */ | |
4c055a5a | 221 | struct redrat3_irdata irdata; |
2154be65 | 222 | u16 bytes_read; |
2154be65 JW |
223 | |
224 | u32 carrier; | |
225 | ||
4c055a5a | 226 | char name[64]; |
2154be65 JW |
227 | char phys[64]; |
228 | }; | |
229 | ||
2154be65 JW |
230 | /* |
231 | * redrat3_issue_async | |
232 | * | |
233 | * Issues an async read to the ir data in port.. | |
234 | * sets the callback to be redrat3_handle_async | |
235 | */ | |
236 | static void redrat3_issue_async(struct redrat3_dev *rr3) | |
237 | { | |
238 | int res; | |
239 | ||
240 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); | |
241 | ||
2154be65 JW |
242 | res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC); |
243 | if (res) | |
244 | rr3_dbg(rr3->dev, "%s: receive request FAILED! " | |
245 | "(res %d, len %d)\n", __func__, res, | |
246 | rr3->read_urb->transfer_buffer_length); | |
247 | } | |
248 | ||
249 | static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code) | |
250 | { | |
251 | if (!rr3->transmitting && (code != 0x40)) | |
252 | dev_info(rr3->dev, "fw error code 0x%02x: ", code); | |
253 | ||
254 | switch (code) { | |
255 | case 0x00: | |
256 | pr_cont("No Error\n"); | |
257 | break; | |
258 | ||
259 | /* Codes 0x20 through 0x2f are IR Firmware Errors */ | |
260 | case 0x20: | |
261 | pr_cont("Initial signal pulse not long enough " | |
262 | "to measure carrier frequency\n"); | |
263 | break; | |
264 | case 0x21: | |
265 | pr_cont("Not enough length values allocated for signal\n"); | |
266 | break; | |
267 | case 0x22: | |
268 | pr_cont("Not enough memory allocated for signal data\n"); | |
269 | break; | |
270 | case 0x23: | |
271 | pr_cont("Too many signal repeats\n"); | |
272 | break; | |
273 | case 0x28: | |
274 | pr_cont("Insufficient memory available for IR signal " | |
275 | "data memory allocation\n"); | |
276 | break; | |
277 | case 0x29: | |
278 | pr_cont("Insufficient memory available " | |
279 | "for IrDa signal data memory allocation\n"); | |
280 | break; | |
281 | ||
282 | /* Codes 0x30 through 0x3f are USB Firmware Errors */ | |
283 | case 0x30: | |
284 | pr_cont("Insufficient memory available for bulk " | |
285 | "transfer structure\n"); | |
286 | break; | |
287 | ||
288 | /* | |
289 | * Other error codes... These are primarily errors that can occur in | |
290 | * the control messages sent to the redrat | |
291 | */ | |
292 | case 0x40: | |
293 | if (!rr3->transmitting) | |
294 | pr_cont("Signal capture has been terminated\n"); | |
295 | break; | |
296 | case 0x41: | |
297 | pr_cont("Attempt to set/get and unknown signal I/O " | |
298 | "algorithm parameter\n"); | |
299 | break; | |
300 | case 0x42: | |
301 | pr_cont("Signal capture already started\n"); | |
302 | break; | |
303 | ||
304 | default: | |
305 | pr_cont("Unknown Error\n"); | |
306 | break; | |
307 | } | |
308 | } | |
309 | ||
4c055a5a | 310 | static u32 redrat3_val_to_mod_freq(struct redrat3_irdata *irdata) |
2154be65 JW |
311 | { |
312 | u32 mod_freq = 0; | |
4c055a5a | 313 | u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count); |
2154be65 | 314 | |
4c055a5a SY |
315 | if (mod_freq_count != 0) |
316 | mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) / | |
317 | (mod_freq_count * RR3_CLK_PER_COUNT); | |
2154be65 JW |
318 | |
319 | return mod_freq; | |
320 | } | |
321 | ||
322 | /* this function scales down the figures for the same result... */ | |
323 | static u32 redrat3_len_to_us(u32 length) | |
324 | { | |
325 | u32 biglen = length * 1000; | |
326 | u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000; | |
327 | u32 result = (u32) (biglen / divisor); | |
328 | ||
329 | /* don't allow zero lengths to go back, breaks lirc */ | |
330 | return result ? result : 1; | |
331 | } | |
332 | ||
333 | /* | |
334 | * convert us back into redrat3 lengths | |
335 | * | |
336 | * length * 1000 length * 1000000 | |
337 | * ------------- = ---------------- = micro | |
338 | * rr3clk / 1000 rr3clk | |
339 | ||
340 | * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000 | |
341 | * ----- = 4 ----- = 6 -------------- = len --------------------- | |
342 | * 3 2 1000000 1000 | |
343 | */ | |
344 | static u32 redrat3_us_to_len(u32 microsec) | |
345 | { | |
346 | u32 result; | |
347 | u32 divisor; | |
348 | ||
349 | microsec &= IR_MAX_DURATION; | |
350 | divisor = (RR3_CLK_CONV_FACTOR / 1000); | |
351 | result = (u32)(microsec * divisor) / 1000; | |
352 | ||
353 | /* don't allow zero lengths to go back, breaks lirc */ | |
354 | return result ? result : 1; | |
2154be65 JW |
355 | } |
356 | ||
68b2a69d | 357 | /* timer callback to send reset event */ |
2154be65 JW |
358 | static void redrat3_rx_timeout(unsigned long data) |
359 | { | |
360 | struct redrat3_dev *rr3 = (struct redrat3_dev *)data; | |
2154be65 JW |
361 | |
362 | rr3_dbg(rr3->dev, "calling ir_raw_event_reset\n"); | |
363 | ir_raw_event_reset(rr3->rc); | |
364 | } | |
365 | ||
366 | static void redrat3_process_ir_data(struct redrat3_dev *rr3) | |
367 | { | |
368 | DEFINE_IR_RAW_EVENT(rawir); | |
2154be65 | 369 | struct device *dev; |
fa7b9ac2 | 370 | unsigned i, trailer = 0; |
4c055a5a | 371 | unsigned sig_size, single_len, offset, val; |
2154be65 | 372 | unsigned long delay; |
4c055a5a | 373 | u32 mod_freq; |
2154be65 JW |
374 | |
375 | if (!rr3) { | |
376 | pr_err("%s called with no context!\n", __func__); | |
377 | return; | |
378 | } | |
379 | ||
380 | rr3_ftr(rr3->dev, "Entered %s\n", __func__); | |
381 | ||
382 | dev = rr3->dev; | |
2154be65 | 383 | |
c53f9f00 JW |
384 | /* Make sure we reset the IR kfifo after a bit of inactivity */ |
385 | delay = usecs_to_jiffies(rr3->hw_timeout); | |
2154be65 JW |
386 | mod_timer(&rr3->rx_timeout, jiffies + delay); |
387 | ||
4c055a5a | 388 | mod_freq = redrat3_val_to_mod_freq(&rr3->irdata); |
2154be65 JW |
389 | rr3_dbg(dev, "Got mod_freq of %u\n", mod_freq); |
390 | ||
2154be65 | 391 | /* process each rr3 encoded byte into an int */ |
4c055a5a SY |
392 | sig_size = be16_to_cpu(rr3->irdata.sig_size); |
393 | for (i = 0; i < sig_size; i++) { | |
394 | offset = rr3->irdata.sigdata[i]; | |
395 | val = get_unaligned_be16(&rr3->irdata.lens[offset]); | |
396 | single_len = redrat3_len_to_us(val); | |
2154be65 | 397 | |
2154be65 JW |
398 | /* we should always get pulse/space/pulse/space samples */ |
399 | if (i % 2) | |
400 | rawir.pulse = false; | |
401 | else | |
402 | rawir.pulse = true; | |
403 | ||
404 | rawir.duration = US_TO_NS(single_len); | |
c53f9f00 JW |
405 | /* Save initial pulse length to fudge trailer */ |
406 | if (i == 0) | |
407 | trailer = rawir.duration; | |
2c594ffa JW |
408 | /* cap the value to IR_MAX_DURATION */ |
409 | rawir.duration &= IR_MAX_DURATION; | |
410 | ||
2154be65 JW |
411 | rr3_dbg(dev, "storing %s with duration %d (i: %d)\n", |
412 | rawir.pulse ? "pulse" : "space", rawir.duration, i); | |
413 | ir_raw_event_store_with_filter(rr3->rc, &rawir); | |
414 | } | |
415 | ||
416 | /* add a trailing space, if need be */ | |
417 | if (i % 2) { | |
418 | rawir.pulse = false; | |
419 | /* this duration is made up, and may not be ideal... */ | |
c53f9f00 JW |
420 | if (trailer < US_TO_NS(1000)) |
421 | rawir.duration = US_TO_NS(2800); | |
422 | else | |
423 | rawir.duration = trailer; | |
2154be65 JW |
424 | rr3_dbg(dev, "storing trailing space with duration %d\n", |
425 | rawir.duration); | |
426 | ir_raw_event_store_with_filter(rr3->rc, &rawir); | |
427 | } | |
428 | ||
429 | rr3_dbg(dev, "calling ir_raw_event_handle\n"); | |
430 | ir_raw_event_handle(rr3->rc); | |
2154be65 JW |
431 | } |
432 | ||
433 | /* Util fn to send rr3 cmds */ | |
434 | static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3) | |
435 | { | |
436 | struct usb_device *udev; | |
437 | u8 *data; | |
438 | int res; | |
439 | ||
440 | data = kzalloc(sizeof(u8), GFP_KERNEL); | |
441 | if (!data) | |
442 | return -ENOMEM; | |
443 | ||
444 | udev = rr3->udev; | |
445 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd, | |
446 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
447 | 0x0000, 0x0000, data, sizeof(u8), HZ * 10); | |
448 | ||
449 | if (res < 0) { | |
450 | dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d", | |
451 | __func__, res, *data); | |
452 | res = -EIO; | |
453 | } else | |
4c055a5a | 454 | res = data[0]; |
2154be65 JW |
455 | |
456 | kfree(data); | |
457 | ||
458 | return res; | |
459 | } | |
460 | ||
461 | /* Enables the long range detector and starts async receive */ | |
462 | static int redrat3_enable_detector(struct redrat3_dev *rr3) | |
463 | { | |
464 | struct device *dev = rr3->dev; | |
465 | u8 ret; | |
466 | ||
467 | rr3_ftr(dev, "Entering %s\n", __func__); | |
468 | ||
469 | ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3); | |
470 | if (ret != 0) | |
471 | dev_dbg(dev, "%s: unexpected ret of %d\n", | |
472 | __func__, ret); | |
473 | ||
474 | ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); | |
475 | if (ret != 1) { | |
476 | dev_err(dev, "%s: detector status: %d, should be 1\n", | |
477 | __func__, ret); | |
478 | return -EIO; | |
479 | } | |
480 | ||
2154be65 JW |
481 | redrat3_issue_async(rr3); |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
2154be65 JW |
486 | static inline void redrat3_delete(struct redrat3_dev *rr3, |
487 | struct usb_device *udev) | |
488 | { | |
489 | rr3_ftr(rr3->dev, "%s cleaning up\n", __func__); | |
490 | usb_kill_urb(rr3->read_urb); | |
bf139726 | 491 | usb_kill_urb(rr3->flash_urb); |
2154be65 | 492 | usb_free_urb(rr3->read_urb); |
bf139726 | 493 | usb_free_urb(rr3->flash_urb); |
fa7b9ac2 | 494 | usb_free_coherent(udev, le16_to_cpu(rr3->ep_in->wMaxPacketSize), |
2154be65 | 495 | rr3->bulk_in_buf, rr3->dma_in); |
2154be65 JW |
496 | |
497 | kfree(rr3); | |
498 | } | |
499 | ||
c53f9f00 | 500 | static u32 redrat3_get_timeout(struct redrat3_dev *rr3) |
2154be65 | 501 | { |
801b69f2 | 502 | __be32 *tmp; |
c53f9f00 | 503 | u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */ |
2154be65 JW |
504 | int len, ret, pipe; |
505 | ||
506 | len = sizeof(*tmp); | |
507 | tmp = kzalloc(len, GFP_KERNEL); | |
508 | if (!tmp) { | |
c53f9f00 | 509 | dev_warn(rr3->dev, "Memory allocation faillure\n"); |
2154be65 JW |
510 | return timeout; |
511 | } | |
512 | ||
c53f9f00 JW |
513 | pipe = usb_rcvctrlpipe(rr3->udev, 0); |
514 | ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM, | |
2154be65 JW |
515 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
516 | RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5); | |
801b69f2 | 517 | if (ret != len) |
c53f9f00 | 518 | dev_warn(rr3->dev, "Failed to read timeout from hardware\n"); |
801b69f2 SY |
519 | else { |
520 | timeout = redrat3_len_to_us(be32_to_cpup(tmp)); | |
521 | ||
522 | rr3_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000); | |
2154be65 JW |
523 | } |
524 | ||
801b69f2 | 525 | kfree(tmp); |
2154be65 | 526 | |
2154be65 JW |
527 | return timeout; |
528 | } | |
529 | ||
530 | static void redrat3_reset(struct redrat3_dev *rr3) | |
531 | { | |
532 | struct usb_device *udev = rr3->udev; | |
533 | struct device *dev = rr3->dev; | |
534 | int rc, rxpipe, txpipe; | |
535 | u8 *val; | |
536 | int len = sizeof(u8); | |
537 | ||
538 | rr3_ftr(dev, "Entering %s\n", __func__); | |
539 | ||
540 | rxpipe = usb_rcvctrlpipe(udev, 0); | |
541 | txpipe = usb_sndctrlpipe(udev, 0); | |
542 | ||
fa7b9ac2 | 543 | val = kmalloc(len, GFP_KERNEL); |
2154be65 JW |
544 | if (!val) { |
545 | dev_err(dev, "Memory allocation failure\n"); | |
546 | return; | |
547 | } | |
548 | ||
549 | *val = 0x01; | |
550 | rc = usb_control_msg(udev, rxpipe, RR3_RESET, | |
551 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
552 | RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25); | |
553 | rr3_dbg(dev, "reset returned 0x%02x\n", rc); | |
554 | ||
555 | *val = 5; | |
556 | rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, | |
557 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, | |
558 | RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25); | |
559 | rr3_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc); | |
560 | ||
561 | *val = RR3_DRIVER_MAXLENS; | |
562 | rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, | |
563 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, | |
564 | RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25); | |
565 | rr3_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc); | |
566 | ||
567 | kfree(val); | |
568 | } | |
569 | ||
570 | static void redrat3_get_firmware_rev(struct redrat3_dev *rr3) | |
571 | { | |
572 | int rc = 0; | |
573 | char *buffer; | |
574 | ||
575 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); | |
576 | ||
577 | buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL); | |
578 | if (!buffer) { | |
579 | dev_err(rr3->dev, "Memory allocation failure\n"); | |
580 | return; | |
581 | } | |
582 | ||
583 | rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0), | |
584 | RR3_FW_VERSION, | |
585 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
586 | 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5); | |
587 | ||
588 | if (rc >= 0) | |
589 | dev_info(rr3->dev, "Firmware rev: %s", buffer); | |
590 | else | |
591 | dev_err(rr3->dev, "Problem fetching firmware ID\n"); | |
592 | ||
593 | kfree(buffer); | |
594 | rr3_ftr(rr3->dev, "Exiting %s\n", __func__); | |
595 | } | |
596 | ||
fa7b9ac2 | 597 | static void redrat3_read_packet_start(struct redrat3_dev *rr3, unsigned len) |
2154be65 | 598 | { |
4c055a5a SY |
599 | struct redrat3_header *header = rr3->bulk_in_buf; |
600 | unsigned pktlen, pkttype; | |
2154be65 JW |
601 | |
602 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); | |
603 | ||
604 | /* grab the Length and type of transfer */ | |
4c055a5a SY |
605 | pktlen = be16_to_cpu(header->length); |
606 | pkttype = be16_to_cpu(header->transfer_type); | |
2154be65 | 607 | |
4c055a5a SY |
608 | if (pktlen > sizeof(rr3->irdata)) { |
609 | dev_warn(rr3->dev, "packet length %u too large\n", pktlen); | |
610 | return; | |
611 | } | |
2154be65 | 612 | |
4c055a5a | 613 | switch (pkttype) { |
2154be65 | 614 | case RR3_ERROR: |
4c055a5a SY |
615 | if (len >= sizeof(struct redrat3_error)) { |
616 | struct redrat3_error *error = rr3->bulk_in_buf; | |
617 | unsigned fw_error = be16_to_cpu(error->fw_error); | |
618 | redrat3_dump_fw_error(rr3, fw_error); | |
619 | } | |
2154be65 JW |
620 | break; |
621 | ||
622 | case RR3_MOD_SIGNAL_IN: | |
4c055a5a | 623 | memcpy(&rr3->irdata, rr3->bulk_in_buf, len); |
2154be65 | 624 | rr3->bytes_read = len; |
2154be65 | 625 | rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", |
4c055a5a | 626 | rr3->bytes_read, pktlen); |
2154be65 JW |
627 | break; |
628 | ||
629 | default: | |
4c055a5a SY |
630 | rr3_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n", |
631 | pkttype, len, pktlen); | |
2154be65 JW |
632 | break; |
633 | } | |
634 | } | |
635 | ||
fa7b9ac2 | 636 | static void redrat3_read_packet_continue(struct redrat3_dev *rr3, unsigned len) |
2154be65 | 637 | { |
4c055a5a SY |
638 | void *irdata = &rr3->irdata; |
639 | ||
2154be65 JW |
640 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); |
641 | ||
4c055a5a SY |
642 | if (len + rr3->bytes_read > sizeof(rr3->irdata)) { |
643 | dev_warn(rr3->dev, "too much data for packet\n"); | |
644 | rr3->bytes_read = 0; | |
645 | return; | |
646 | } | |
647 | ||
648 | memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len); | |
2154be65 JW |
649 | |
650 | rr3->bytes_read += len; | |
4c055a5a SY |
651 | rr3_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", rr3->bytes_read, |
652 | be16_to_cpu(rr3->irdata.header.length)); | |
2154be65 JW |
653 | } |
654 | ||
655 | /* gather IR data from incoming urb, process it when we have enough */ | |
fa7b9ac2 | 656 | static int redrat3_get_ir_data(struct redrat3_dev *rr3, unsigned len) |
2154be65 JW |
657 | { |
658 | struct device *dev = rr3->dev; | |
4c055a5a | 659 | unsigned pkttype; |
2154be65 JW |
660 | int ret = 0; |
661 | ||
662 | rr3_ftr(dev, "Entering %s\n", __func__); | |
663 | ||
4c055a5a | 664 | if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) { |
2154be65 JW |
665 | redrat3_read_packet_start(rr3, len); |
666 | } else if (rr3->bytes_read != 0) { | |
667 | redrat3_read_packet_continue(rr3, len); | |
668 | } else if (rr3->bytes_read == 0) { | |
669 | dev_err(dev, "error: no packet data read\n"); | |
670 | ret = -ENODATA; | |
671 | goto out; | |
672 | } | |
673 | ||
38e35a85 SY |
674 | if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length) + |
675 | sizeof(struct redrat3_header)) | |
2154be65 JW |
676 | /* we're still accumulating data */ |
677 | return 0; | |
678 | ||
679 | /* if we get here, we've got IR data to decode */ | |
4c055a5a SY |
680 | pkttype = be16_to_cpu(rr3->irdata.header.transfer_type); |
681 | if (pkttype == RR3_MOD_SIGNAL_IN) | |
2154be65 JW |
682 | redrat3_process_ir_data(rr3); |
683 | else | |
4c055a5a SY |
684 | rr3_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n", |
685 | pkttype); | |
2154be65 JW |
686 | |
687 | out: | |
688 | rr3->bytes_read = 0; | |
2154be65 JW |
689 | return ret; |
690 | } | |
691 | ||
692 | /* callback function from USB when async USB request has completed */ | |
801b69f2 | 693 | static void redrat3_handle_async(struct urb *urb) |
2154be65 JW |
694 | { |
695 | struct redrat3_dev *rr3; | |
dbea1880 | 696 | int ret; |
2154be65 JW |
697 | |
698 | if (!urb) | |
699 | return; | |
700 | ||
701 | rr3 = urb->context; | |
702 | if (!rr3) { | |
703 | pr_err("%s called with invalid context!\n", __func__); | |
704 | usb_unlink_urb(urb); | |
705 | return; | |
706 | } | |
707 | ||
708 | rr3_ftr(rr3->dev, "Entering %s\n", __func__); | |
709 | ||
2154be65 JW |
710 | switch (urb->status) { |
711 | case 0: | |
dbea1880 AV |
712 | ret = redrat3_get_ir_data(rr3, urb->actual_length); |
713 | if (!ret) { | |
714 | /* no error, prepare to read more */ | |
715 | redrat3_issue_async(rr3); | |
716 | } | |
2154be65 JW |
717 | break; |
718 | ||
719 | case -ECONNRESET: | |
720 | case -ENOENT: | |
721 | case -ESHUTDOWN: | |
722 | usb_unlink_urb(urb); | |
723 | return; | |
724 | ||
725 | case -EPIPE: | |
726 | default: | |
727 | dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status); | |
728 | rr3->bytes_read = 0; | |
2154be65 JW |
729 | break; |
730 | } | |
2154be65 JW |
731 | } |
732 | ||
2154be65 JW |
733 | static u16 mod_freq_to_val(unsigned int mod_freq) |
734 | { | |
735 | int mult = 6000000; | |
736 | ||
737 | /* Clk used in mod. freq. generation is CLK24/4. */ | |
4c055a5a | 738 | return 65536 - (mult / mod_freq); |
2154be65 JW |
739 | } |
740 | ||
dbea1880 | 741 | static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier) |
2154be65 | 742 | { |
dbea1880 AV |
743 | struct redrat3_dev *rr3 = rcdev->priv; |
744 | struct device *dev = rr3->dev; | |
2154be65 | 745 | |
dbea1880 | 746 | rr3_dbg(dev, "Setting modulation frequency to %u", carrier); |
48cafec9 DC |
747 | if (carrier == 0) |
748 | return -EINVAL; | |
749 | ||
2154be65 JW |
750 | rr3->carrier = carrier; |
751 | ||
752 | return carrier; | |
753 | } | |
754 | ||
dbea1880 AV |
755 | static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf, |
756 | unsigned count) | |
2154be65 JW |
757 | { |
758 | struct redrat3_dev *rr3 = rcdev->priv; | |
759 | struct device *dev = rr3->dev; | |
4c055a5a | 760 | struct redrat3_irdata *irdata = NULL; |
fa7b9ac2 | 761 | int ret, ret_len; |
2154be65 | 762 | int lencheck, cur_sample_len, pipe; |
2154be65 | 763 | int *sample_lens = NULL; |
2154be65 | 764 | u8 curlencheck = 0; |
fa7b9ac2 | 765 | unsigned i, sendbuf_len; |
2154be65 JW |
766 | |
767 | rr3_ftr(dev, "Entering %s\n", __func__); | |
768 | ||
769 | if (rr3->transmitting) { | |
770 | dev_warn(dev, "%s: transmitter already in use\n", __func__); | |
771 | return -EAGAIN; | |
772 | } | |
773 | ||
671ea670 SY |
774 | if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN) |
775 | return -EINVAL; | |
2154be65 | 776 | |
dbea1880 | 777 | /* rr3 will disable rc detector on transmit */ |
2154be65 JW |
778 | rr3->transmitting = true; |
779 | ||
2154be65 JW |
780 | sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL); |
781 | if (!sample_lens) { | |
782 | ret = -ENOMEM; | |
783 | goto out; | |
784 | } | |
785 | ||
4c055a5a SY |
786 | irdata = kzalloc(sizeof(*irdata), GFP_KERNEL); |
787 | if (!irdata) { | |
801b69f2 SY |
788 | ret = -ENOMEM; |
789 | goto out; | |
790 | } | |
791 | ||
2154be65 | 792 | for (i = 0; i < count; i++) { |
06eae25f | 793 | cur_sample_len = redrat3_us_to_len(txbuf[i]); |
801b69f2 SY |
794 | if (cur_sample_len > 0xffff) { |
795 | dev_warn(dev, "transmit period of %uus truncated to %uus\n", | |
796 | txbuf[i], redrat3_len_to_us(0xffff)); | |
797 | cur_sample_len = 0xffff; | |
798 | } | |
2154be65 | 799 | for (lencheck = 0; lencheck < curlencheck; lencheck++) { |
2154be65 JW |
800 | if (sample_lens[lencheck] == cur_sample_len) |
801 | break; | |
802 | } | |
803 | if (lencheck == curlencheck) { | |
2154be65 JW |
804 | rr3_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n", |
805 | i, txbuf[i], curlencheck, cur_sample_len); | |
06eae25f | 806 | if (curlencheck < RR3_DRIVER_MAXLENS) { |
2154be65 JW |
807 | /* now convert the value to a proper |
808 | * rr3 value.. */ | |
809 | sample_lens[curlencheck] = cur_sample_len; | |
4c055a5a SY |
810 | put_unaligned_be16(cur_sample_len, |
811 | &irdata->lens[curlencheck]); | |
2154be65 JW |
812 | curlencheck++; |
813 | } else { | |
671ea670 SY |
814 | ret = -EINVAL; |
815 | goto out; | |
2154be65 JW |
816 | } |
817 | } | |
4c055a5a | 818 | irdata->sigdata[i] = lencheck; |
2154be65 JW |
819 | } |
820 | ||
4c055a5a SY |
821 | irdata->sigdata[count] = RR3_END_OF_SIGNAL; |
822 | irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL; | |
2154be65 | 823 | |
4c055a5a SY |
824 | sendbuf_len = offsetof(struct redrat3_irdata, |
825 | sigdata[count + RR3_TX_TRAILER_LEN]); | |
2154be65 | 826 | /* fill in our packet header */ |
4c055a5a SY |
827 | irdata->header.length = cpu_to_be16(sendbuf_len - |
828 | sizeof(struct redrat3_header)); | |
829 | irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT); | |
830 | irdata->pause = cpu_to_be32(redrat3_len_to_us(100)); | |
831 | irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier)); | |
832 | irdata->no_lengths = curlencheck; | |
833 | irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN); | |
2154be65 JW |
834 | |
835 | pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress); | |
4c055a5a | 836 | ret = usb_bulk_msg(rr3->udev, pipe, irdata, |
2154be65 | 837 | sendbuf_len, &ret_len, 10 * HZ); |
4c055a5a | 838 | rr3_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret); |
2154be65 JW |
839 | |
840 | /* now tell the hardware to transmit what we sent it */ | |
841 | pipe = usb_rcvctrlpipe(rr3->udev, 0); | |
842 | ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL, | |
843 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
4c055a5a | 844 | 0, 0, irdata, 2, HZ * 10); |
2154be65 JW |
845 | |
846 | if (ret < 0) | |
847 | dev_err(dev, "Error: control msg send failed, rc %d\n", ret); | |
848 | else | |
dbea1880 | 849 | ret = count; |
2154be65 JW |
850 | |
851 | out: | |
852 | kfree(sample_lens); | |
4c055a5a | 853 | kfree(irdata); |
2154be65 JW |
854 | |
855 | rr3->transmitting = false; | |
dbea1880 | 856 | /* rr3 re-enables rc detector because it was enabled before */ |
2154be65 JW |
857 | |
858 | return ret; | |
859 | } | |
860 | ||
bf139726 SY |
861 | static void redrat3_brightness_set(struct led_classdev *led_dev, enum |
862 | led_brightness brightness) | |
863 | { | |
864 | struct redrat3_dev *rr3 = container_of(led_dev, struct redrat3_dev, | |
865 | led); | |
866 | ||
867 | if (brightness != LED_OFF && atomic_cmpxchg(&rr3->flash, 0, 1) == 0) { | |
868 | int ret = usb_submit_urb(rr3->flash_urb, GFP_ATOMIC); | |
869 | if (ret != 0) { | |
870 | dev_dbg(rr3->dev, "%s: unexpected ret of %d\n", | |
871 | __func__, ret); | |
872 | atomic_set(&rr3->flash, 0); | |
873 | } | |
874 | } | |
875 | } | |
876 | ||
877 | static void redrat3_led_complete(struct urb *urb) | |
878 | { | |
879 | struct redrat3_dev *rr3 = urb->context; | |
880 | ||
881 | switch (urb->status) { | |
882 | case 0: | |
883 | break; | |
884 | case -ECONNRESET: | |
885 | case -ENOENT: | |
886 | case -ESHUTDOWN: | |
887 | usb_unlink_urb(urb); | |
888 | return; | |
889 | case -EPIPE: | |
890 | default: | |
891 | dev_dbg(rr3->dev, "Error: urb status = %d\n", urb->status); | |
892 | break; | |
893 | } | |
894 | ||
895 | rr3->led.brightness = LED_OFF; | |
896 | atomic_dec(&rr3->flash); | |
897 | } | |
898 | ||
2154be65 JW |
899 | static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) |
900 | { | |
901 | struct device *dev = rr3->dev; | |
902 | struct rc_dev *rc; | |
903 | int ret = -ENODEV; | |
904 | u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct); | |
905 | ||
906 | rc = rc_allocate_device(); | |
907 | if (!rc) { | |
908 | dev_err(dev, "remote input dev allocation failed\n"); | |
909 | goto out; | |
910 | } | |
911 | ||
912 | snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s " | |
913 | "Infrared Remote Transceiver (%04x:%04x)", | |
914 | prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "", | |
915 | le16_to_cpu(rr3->udev->descriptor.idVendor), prod); | |
916 | ||
917 | usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys)); | |
918 | ||
919 | rc->input_name = rr3->name; | |
920 | rc->input_phys = rr3->phys; | |
921 | usb_to_input_id(rr3->udev, &rc->input_id); | |
922 | rc->dev.parent = dev; | |
923 | rc->priv = rr3; | |
924 | rc->driver_type = RC_DRIVER_IR_RAW; | |
c003ab1b | 925 | rc->allowed_protos = RC_BIT_ALL; |
c53f9f00 | 926 | rc->timeout = US_TO_NS(2750); |
2154be65 JW |
927 | rc->tx_ir = redrat3_transmit_ir; |
928 | rc->s_tx_carrier = redrat3_set_tx_carrier; | |
929 | rc->driver_name = DRIVER_NAME; | |
06eae25f | 930 | rc->rx_resolution = US_TO_NS(2); |
2154be65 JW |
931 | rc->map_name = RC_MAP_HAUPPAUGE; |
932 | ||
933 | ret = rc_register_device(rc); | |
934 | if (ret < 0) { | |
935 | dev_err(dev, "remote dev registration failed\n"); | |
936 | goto out; | |
937 | } | |
938 | ||
939 | return rc; | |
940 | ||
941 | out: | |
942 | rc_free_device(rc); | |
943 | return NULL; | |
944 | } | |
945 | ||
4c62e976 GKH |
946 | static int redrat3_dev_probe(struct usb_interface *intf, |
947 | const struct usb_device_id *id) | |
2154be65 JW |
948 | { |
949 | struct usb_device *udev = interface_to_usbdev(intf); | |
950 | struct device *dev = &intf->dev; | |
951 | struct usb_host_interface *uhi; | |
952 | struct redrat3_dev *rr3; | |
953 | struct usb_endpoint_descriptor *ep; | |
954 | struct usb_endpoint_descriptor *ep_in = NULL; | |
955 | struct usb_endpoint_descriptor *ep_out = NULL; | |
956 | u8 addr, attrs; | |
957 | int pipe, i; | |
958 | int retval = -ENOMEM; | |
959 | ||
960 | rr3_ftr(dev, "%s called\n", __func__); | |
961 | ||
962 | uhi = intf->cur_altsetting; | |
963 | ||
964 | /* find our bulk-in and bulk-out endpoints */ | |
965 | for (i = 0; i < uhi->desc.bNumEndpoints; ++i) { | |
966 | ep = &uhi->endpoint[i].desc; | |
967 | addr = ep->bEndpointAddress; | |
968 | attrs = ep->bmAttributes; | |
969 | ||
970 | if ((ep_in == NULL) && | |
971 | ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && | |
972 | ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == | |
973 | USB_ENDPOINT_XFER_BULK)) { | |
974 | rr3_dbg(dev, "found bulk-in endpoint at 0x%02x\n", | |
975 | ep->bEndpointAddress); | |
976 | /* data comes in on 0x82, 0x81 is for other data... */ | |
977 | if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR) | |
978 | ep_in = ep; | |
979 | } | |
980 | ||
981 | if ((ep_out == NULL) && | |
982 | ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && | |
983 | ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == | |
984 | USB_ENDPOINT_XFER_BULK)) { | |
985 | rr3_dbg(dev, "found bulk-out endpoint at 0x%02x\n", | |
986 | ep->bEndpointAddress); | |
987 | ep_out = ep; | |
988 | } | |
989 | } | |
990 | ||
991 | if (!ep_in || !ep_out) { | |
992 | dev_err(dev, "Couldn't find both in and out endpoints\n"); | |
993 | retval = -ENODEV; | |
994 | goto no_endpoints; | |
995 | } | |
996 | ||
997 | /* allocate memory for our device state and initialize it */ | |
998 | rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL); | |
999 | if (rr3 == NULL) { | |
1000 | dev_err(dev, "Memory allocation failure\n"); | |
7eb75715 | 1001 | goto no_endpoints; |
2154be65 JW |
1002 | } |
1003 | ||
1004 | rr3->dev = &intf->dev; | |
1005 | ||
1006 | /* set up bulk-in endpoint */ | |
1007 | rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1008 | if (!rr3->read_urb) { | |
1009 | dev_err(dev, "Read urb allocation failure\n"); | |
1010 | goto error; | |
1011 | } | |
1012 | ||
1013 | rr3->ep_in = ep_in; | |
fa7b9ac2 SY |
1014 | rr3->bulk_in_buf = usb_alloc_coherent(udev, |
1015 | le16_to_cpu(ep_in->wMaxPacketSize), GFP_ATOMIC, &rr3->dma_in); | |
2154be65 JW |
1016 | if (!rr3->bulk_in_buf) { |
1017 | dev_err(dev, "Read buffer allocation failure\n"); | |
1018 | goto error; | |
1019 | } | |
1020 | ||
1021 | pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress); | |
fa7b9ac2 SY |
1022 | usb_fill_bulk_urb(rr3->read_urb, udev, pipe, rr3->bulk_in_buf, |
1023 | le16_to_cpu(ep_in->wMaxPacketSize), redrat3_handle_async, rr3); | |
2154be65 JW |
1024 | |
1025 | rr3->ep_out = ep_out; | |
2154be65 JW |
1026 | rr3->udev = udev; |
1027 | ||
1028 | redrat3_reset(rr3); | |
1029 | redrat3_get_firmware_rev(rr3); | |
1030 | ||
1031 | /* might be all we need to do? */ | |
1032 | retval = redrat3_enable_detector(rr3); | |
1033 | if (retval < 0) | |
1034 | goto error; | |
1035 | ||
c53f9f00 JW |
1036 | /* store current hardware timeout, in us, will use for kfifo resets */ |
1037 | rr3->hw_timeout = redrat3_get_timeout(rr3); | |
1038 | ||
2154be65 JW |
1039 | /* default.. will get overridden by any sends with a freq defined */ |
1040 | rr3->carrier = 38000; | |
1041 | ||
bf139726 SY |
1042 | /* led control */ |
1043 | rr3->led.name = "redrat3:red:feedback"; | |
1044 | rr3->led.default_trigger = "rc-feedback"; | |
1045 | rr3->led.brightness_set = redrat3_brightness_set; | |
1046 | retval = led_classdev_register(&intf->dev, &rr3->led); | |
1047 | if (retval) | |
1048 | goto error; | |
1049 | ||
1050 | atomic_set(&rr3->flash, 0); | |
1051 | rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1052 | if (!rr3->flash_urb) { | |
1053 | retval = -ENOMEM; | |
1054 | goto led_free_error; | |
1055 | } | |
1056 | ||
1057 | /* setup packet is 'c0 b9 0000 0000 0001' */ | |
1058 | rr3->flash_control.bRequestType = 0xc0; | |
1059 | rr3->flash_control.bRequest = RR3_BLINK_LED; | |
1060 | rr3->flash_control.wLength = cpu_to_le16(1); | |
1061 | ||
1062 | usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0), | |
1063 | (unsigned char *)&rr3->flash_control, | |
1064 | &rr3->flash_in_buf, sizeof(rr3->flash_in_buf), | |
1065 | redrat3_led_complete, rr3); | |
1066 | ||
2154be65 | 1067 | rr3->rc = redrat3_init_rc_dev(rr3); |
6ea7cf76 PST |
1068 | if (!rr3->rc) { |
1069 | retval = -ENOMEM; | |
bf139726 | 1070 | goto led_free_error; |
6ea7cf76 | 1071 | } |
2154be65 JW |
1072 | setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3); |
1073 | ||
1074 | /* we can register the device now, as it is ready */ | |
1075 | usb_set_intfdata(intf, rr3); | |
1076 | ||
1077 | rr3_ftr(dev, "Exiting %s\n", __func__); | |
1078 | return 0; | |
1079 | ||
bf139726 SY |
1080 | led_free_error: |
1081 | led_classdev_unregister(&rr3->led); | |
2154be65 JW |
1082 | error: |
1083 | redrat3_delete(rr3, rr3->udev); | |
1084 | ||
1085 | no_endpoints: | |
1086 | dev_err(dev, "%s: retval = %x", __func__, retval); | |
1087 | ||
1088 | return retval; | |
1089 | } | |
1090 | ||
4c62e976 | 1091 | static void redrat3_dev_disconnect(struct usb_interface *intf) |
2154be65 JW |
1092 | { |
1093 | struct usb_device *udev = interface_to_usbdev(intf); | |
1094 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
1095 | ||
1096 | rr3_ftr(&intf->dev, "Entering %s\n", __func__); | |
1097 | ||
1098 | if (!rr3) | |
1099 | return; | |
1100 | ||
2154be65 JW |
1101 | usb_set_intfdata(intf, NULL); |
1102 | rc_unregister_device(rr3->rc); | |
bf139726 | 1103 | led_classdev_unregister(&rr3->led); |
c53f9f00 | 1104 | del_timer_sync(&rr3->rx_timeout); |
2154be65 JW |
1105 | redrat3_delete(rr3, udev); |
1106 | ||
1107 | rr3_ftr(&intf->dev, "RedRat3 IR Transceiver now disconnected\n"); | |
1108 | } | |
1109 | ||
1110 | static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message) | |
1111 | { | |
1112 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
1113 | rr3_ftr(rr3->dev, "suspend\n"); | |
bf139726 | 1114 | led_classdev_suspend(&rr3->led); |
2154be65 | 1115 | usb_kill_urb(rr3->read_urb); |
bf139726 | 1116 | usb_kill_urb(rr3->flash_urb); |
2154be65 JW |
1117 | return 0; |
1118 | } | |
1119 | ||
1120 | static int redrat3_dev_resume(struct usb_interface *intf) | |
1121 | { | |
1122 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
1123 | rr3_ftr(rr3->dev, "resume\n"); | |
1124 | if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC)) | |
1125 | return -EIO; | |
bf139726 | 1126 | led_classdev_resume(&rr3->led); |
2154be65 JW |
1127 | return 0; |
1128 | } | |
1129 | ||
1130 | static struct usb_driver redrat3_dev_driver = { | |
1131 | .name = DRIVER_NAME, | |
1132 | .probe = redrat3_dev_probe, | |
4c62e976 | 1133 | .disconnect = redrat3_dev_disconnect, |
2154be65 JW |
1134 | .suspend = redrat3_dev_suspend, |
1135 | .resume = redrat3_dev_resume, | |
1136 | .reset_resume = redrat3_dev_resume, | |
1137 | .id_table = redrat3_dev_table | |
1138 | }; | |
1139 | ||
ecb3b2b3 | 1140 | module_usb_driver(redrat3_dev_driver); |
2154be65 JW |
1141 | |
1142 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1143 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1144 | MODULE_AUTHOR(DRIVER_AUTHOR2); | |
1145 | MODULE_LICENSE("GPL"); | |
1146 | MODULE_DEVICE_TABLE(usb, redrat3_dev_table); | |
1147 | ||
1148 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
1149 | MODULE_PARM_DESC(debug, "Enable module debug spew. 0 = no debugging (default) " | |
1150 | "0x1 = standard debug messages, 0x2 = function tracing debug. " | |
1151 | "Flag bits are addative (i.e., 0x3 for both debug types)."); |