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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 | ||
2154be65 JW |
63 | /* bulk data transfer types */ |
64 | #define RR3_ERROR 0x01 | |
65 | #define RR3_MOD_SIGNAL_IN 0x20 | |
66 | #define RR3_MOD_SIGNAL_OUT 0x21 | |
67 | ||
68 | /* Get the RR firmware version */ | |
69 | #define RR3_FW_VERSION 0xb1 | |
70 | #define RR3_FW_VERSION_LEN 64 | |
71 | /* Send encoded signal bulk-sent earlier*/ | |
72 | #define RR3_TX_SEND_SIGNAL 0xb3 | |
73 | #define RR3_SET_IR_PARAM 0xb7 | |
74 | #define RR3_GET_IR_PARAM 0xb8 | |
75 | /* Blink the red LED on the device */ | |
76 | #define RR3_BLINK_LED 0xb9 | |
77 | /* Read serial number of device */ | |
78 | #define RR3_READ_SER_NO 0xba | |
79 | #define RR3_SER_NO_LEN 4 | |
80 | /* Start capture with the RC receiver */ | |
81 | #define RR3_RC_DET_ENABLE 0xbb | |
82 | /* Stop capture with the RC receiver */ | |
83 | #define RR3_RC_DET_DISABLE 0xbc | |
84 | /* Return the status of RC detector capture */ | |
85 | #define RR3_RC_DET_STATUS 0xbd | |
86 | /* Reset redrat */ | |
87 | #define RR3_RESET 0xa0 | |
88 | ||
89 | /* Max number of lengths in the signal. */ | |
90 | #define RR3_IR_IO_MAX_LENGTHS 0x01 | |
91 | /* Periods to measure mod. freq. */ | |
92 | #define RR3_IR_IO_PERIODS_MF 0x02 | |
93 | /* Size of memory for main signal data */ | |
94 | #define RR3_IR_IO_SIG_MEM_SIZE 0x03 | |
95 | /* Delta value when measuring lengths */ | |
96 | #define RR3_IR_IO_LENGTH_FUZZ 0x04 | |
97 | /* Timeout for end of signal detection */ | |
98 | #define RR3_IR_IO_SIG_TIMEOUT 0x05 | |
39c1cb2b | 99 | /* Minimum value for pause recognition. */ |
2154be65 JW |
100 | #define RR3_IR_IO_MIN_PAUSE 0x06 |
101 | ||
102 | /* Clock freq. of EZ-USB chip */ | |
103 | #define RR3_CLK 24000000 | |
104 | /* Clock periods per timer count */ | |
105 | #define RR3_CLK_PER_COUNT 12 | |
106 | /* (RR3_CLK / RR3_CLK_PER_COUNT) */ | |
107 | #define RR3_CLK_CONV_FACTOR 2000000 | |
108 | /* USB bulk-in IR data endpoint address */ | |
109 | #define RR3_BULK_IN_EP_ADDR 0x82 | |
110 | ||
2154be65 | 111 | /* Size of the fixed-length portion of the signal */ |
2154be65 JW |
112 | #define RR3_DRIVER_MAXLENS 128 |
113 | #define RR3_MAX_SIG_SIZE 512 | |
2154be65 JW |
114 | #define RR3_TIME_UNIT 50 |
115 | #define RR3_END_OF_SIGNAL 0x7f | |
2154be65 JW |
116 | #define RR3_TX_TRAILER_LEN 2 |
117 | #define RR3_RX_MIN_TIMEOUT 5 | |
118 | #define RR3_RX_MAX_TIMEOUT 2000 | |
119 | ||
120 | /* The 8051's CPUCS Register address */ | |
121 | #define RR3_CPUCS_REG_ADDR 0x7f92 | |
122 | ||
123 | #define USB_RR3USB_VENDOR_ID 0x112a | |
124 | #define USB_RR3USB_PRODUCT_ID 0x0001 | |
125 | #define USB_RR3IIUSB_PRODUCT_ID 0x0005 | |
126 | ||
4c055a5a SY |
127 | struct redrat3_header { |
128 | __be16 length; | |
129 | __be16 transfer_type; | |
130 | } __packed; | |
131 | ||
132 | /* sending and receiving irdata */ | |
133 | struct redrat3_irdata { | |
134 | struct redrat3_header header; | |
135 | __be32 pause; | |
136 | __be16 mod_freq_count; | |
137 | __be16 num_periods; | |
138 | __u8 max_lengths; | |
139 | __u8 no_lengths; | |
140 | __be16 max_sig_size; | |
141 | __be16 sig_size; | |
142 | __u8 no_repeats; | |
143 | __be16 lens[RR3_DRIVER_MAXLENS]; /* not aligned */ | |
144 | __u8 sigdata[RR3_MAX_SIG_SIZE]; | |
145 | } __packed; | |
146 | ||
147 | /* firmware errors */ | |
148 | struct redrat3_error { | |
149 | struct redrat3_header header; | |
150 | __be16 fw_error; | |
151 | } __packed; | |
152 | ||
2154be65 JW |
153 | /* table of devices that work with this driver */ |
154 | static struct usb_device_id redrat3_dev_table[] = { | |
155 | /* Original version of the RedRat3 */ | |
156 | {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3USB_PRODUCT_ID)}, | |
157 | /* Second Version/release of the RedRat3 - RetRat3-II */ | |
158 | {USB_DEVICE(USB_RR3USB_VENDOR_ID, USB_RR3IIUSB_PRODUCT_ID)}, | |
159 | {} /* Terminating entry */ | |
160 | }; | |
161 | ||
162 | /* Structure to hold all of our device specific stuff */ | |
163 | struct redrat3_dev { | |
164 | /* core device bits */ | |
165 | struct rc_dev *rc; | |
166 | struct device *dev; | |
167 | ||
bf139726 SY |
168 | /* led control */ |
169 | struct led_classdev led; | |
170 | atomic_t flash; | |
171 | struct usb_ctrlrequest flash_control; | |
172 | struct urb *flash_urb; | |
173 | u8 flash_in_buf; | |
174 | ||
2154be65 JW |
175 | /* save off the usb device pointer */ |
176 | struct usb_device *udev; | |
177 | ||
178 | /* the receive endpoint */ | |
179 | struct usb_endpoint_descriptor *ep_in; | |
180 | /* the buffer to receive data */ | |
4c055a5a | 181 | void *bulk_in_buf; |
2154be65 JW |
182 | /* urb used to read ir data */ |
183 | struct urb *read_urb; | |
184 | ||
185 | /* the send endpoint */ | |
186 | struct usb_endpoint_descriptor *ep_out; | |
2154be65 JW |
187 | |
188 | /* usb dma */ | |
189 | dma_addr_t dma_in; | |
2154be65 | 190 | |
2154be65 JW |
191 | /* rx signal timeout timer */ |
192 | struct timer_list rx_timeout; | |
c53f9f00 | 193 | u32 hw_timeout; |
2154be65 | 194 | |
2154be65 JW |
195 | /* Is the device currently transmitting?*/ |
196 | bool transmitting; | |
197 | ||
198 | /* store for current packet */ | |
4c055a5a | 199 | struct redrat3_irdata irdata; |
2154be65 | 200 | u16 bytes_read; |
2154be65 JW |
201 | |
202 | u32 carrier; | |
203 | ||
4c055a5a | 204 | char name[64]; |
2154be65 JW |
205 | char phys[64]; |
206 | }; | |
207 | ||
2154be65 JW |
208 | /* |
209 | * redrat3_issue_async | |
210 | * | |
211 | * Issues an async read to the ir data in port.. | |
212 | * sets the callback to be redrat3_handle_async | |
213 | */ | |
214 | static void redrat3_issue_async(struct redrat3_dev *rr3) | |
215 | { | |
216 | int res; | |
217 | ||
2154be65 JW |
218 | res = usb_submit_urb(rr3->read_urb, GFP_ATOMIC); |
219 | if (res) | |
3228bf81 GKH |
220 | dev_dbg(rr3->dev, |
221 | "%s: receive request FAILED! (res %d, len %d)\n", | |
222 | __func__, res, rr3->read_urb->transfer_buffer_length); | |
2154be65 JW |
223 | } |
224 | ||
225 | static void redrat3_dump_fw_error(struct redrat3_dev *rr3, int code) | |
226 | { | |
227 | if (!rr3->transmitting && (code != 0x40)) | |
228 | dev_info(rr3->dev, "fw error code 0x%02x: ", code); | |
229 | ||
230 | switch (code) { | |
231 | case 0x00: | |
232 | pr_cont("No Error\n"); | |
233 | break; | |
234 | ||
235 | /* Codes 0x20 through 0x2f are IR Firmware Errors */ | |
236 | case 0x20: | |
237 | pr_cont("Initial signal pulse not long enough " | |
238 | "to measure carrier frequency\n"); | |
239 | break; | |
240 | case 0x21: | |
241 | pr_cont("Not enough length values allocated for signal\n"); | |
242 | break; | |
243 | case 0x22: | |
244 | pr_cont("Not enough memory allocated for signal data\n"); | |
245 | break; | |
246 | case 0x23: | |
247 | pr_cont("Too many signal repeats\n"); | |
248 | break; | |
249 | case 0x28: | |
250 | pr_cont("Insufficient memory available for IR signal " | |
251 | "data memory allocation\n"); | |
252 | break; | |
253 | case 0x29: | |
254 | pr_cont("Insufficient memory available " | |
255 | "for IrDa signal data memory allocation\n"); | |
256 | break; | |
257 | ||
258 | /* Codes 0x30 through 0x3f are USB Firmware Errors */ | |
259 | case 0x30: | |
260 | pr_cont("Insufficient memory available for bulk " | |
261 | "transfer structure\n"); | |
262 | break; | |
263 | ||
264 | /* | |
265 | * Other error codes... These are primarily errors that can occur in | |
266 | * the control messages sent to the redrat | |
267 | */ | |
268 | case 0x40: | |
269 | if (!rr3->transmitting) | |
270 | pr_cont("Signal capture has been terminated\n"); | |
271 | break; | |
272 | case 0x41: | |
273 | pr_cont("Attempt to set/get and unknown signal I/O " | |
274 | "algorithm parameter\n"); | |
275 | break; | |
276 | case 0x42: | |
277 | pr_cont("Signal capture already started\n"); | |
278 | break; | |
279 | ||
280 | default: | |
281 | pr_cont("Unknown Error\n"); | |
282 | break; | |
283 | } | |
284 | } | |
285 | ||
4c055a5a | 286 | static u32 redrat3_val_to_mod_freq(struct redrat3_irdata *irdata) |
2154be65 JW |
287 | { |
288 | u32 mod_freq = 0; | |
4c055a5a | 289 | u16 mod_freq_count = be16_to_cpu(irdata->mod_freq_count); |
2154be65 | 290 | |
4c055a5a SY |
291 | if (mod_freq_count != 0) |
292 | mod_freq = (RR3_CLK * be16_to_cpu(irdata->num_periods)) / | |
293 | (mod_freq_count * RR3_CLK_PER_COUNT); | |
2154be65 JW |
294 | |
295 | return mod_freq; | |
296 | } | |
297 | ||
298 | /* this function scales down the figures for the same result... */ | |
299 | static u32 redrat3_len_to_us(u32 length) | |
300 | { | |
301 | u32 biglen = length * 1000; | |
302 | u32 divisor = (RR3_CLK_CONV_FACTOR) / 1000; | |
303 | u32 result = (u32) (biglen / divisor); | |
304 | ||
305 | /* don't allow zero lengths to go back, breaks lirc */ | |
306 | return result ? result : 1; | |
307 | } | |
308 | ||
309 | /* | |
310 | * convert us back into redrat3 lengths | |
311 | * | |
312 | * length * 1000 length * 1000000 | |
313 | * ------------- = ---------------- = micro | |
314 | * rr3clk / 1000 rr3clk | |
315 | ||
316 | * 6 * 2 4 * 3 micro * rr3clk micro * rr3clk / 1000 | |
317 | * ----- = 4 ----- = 6 -------------- = len --------------------- | |
318 | * 3 2 1000000 1000 | |
319 | */ | |
320 | static u32 redrat3_us_to_len(u32 microsec) | |
321 | { | |
322 | u32 result; | |
323 | u32 divisor; | |
324 | ||
325 | microsec &= IR_MAX_DURATION; | |
326 | divisor = (RR3_CLK_CONV_FACTOR / 1000); | |
327 | result = (u32)(microsec * divisor) / 1000; | |
328 | ||
329 | /* don't allow zero lengths to go back, breaks lirc */ | |
330 | return result ? result : 1; | |
2154be65 JW |
331 | } |
332 | ||
68b2a69d | 333 | /* timer callback to send reset event */ |
2154be65 JW |
334 | static void redrat3_rx_timeout(unsigned long data) |
335 | { | |
336 | struct redrat3_dev *rr3 = (struct redrat3_dev *)data; | |
2154be65 | 337 | |
3228bf81 | 338 | dev_dbg(rr3->dev, "calling ir_raw_event_reset\n"); |
2154be65 JW |
339 | ir_raw_event_reset(rr3->rc); |
340 | } | |
341 | ||
342 | static void redrat3_process_ir_data(struct redrat3_dev *rr3) | |
343 | { | |
344 | DEFINE_IR_RAW_EVENT(rawir); | |
2154be65 | 345 | struct device *dev; |
fa7b9ac2 | 346 | unsigned i, trailer = 0; |
4c055a5a | 347 | unsigned sig_size, single_len, offset, val; |
2154be65 | 348 | unsigned long delay; |
4c055a5a | 349 | u32 mod_freq; |
2154be65 JW |
350 | |
351 | if (!rr3) { | |
352 | pr_err("%s called with no context!\n", __func__); | |
353 | return; | |
354 | } | |
355 | ||
2154be65 | 356 | dev = rr3->dev; |
2154be65 | 357 | |
c53f9f00 JW |
358 | /* Make sure we reset the IR kfifo after a bit of inactivity */ |
359 | delay = usecs_to_jiffies(rr3->hw_timeout); | |
2154be65 JW |
360 | mod_timer(&rr3->rx_timeout, jiffies + delay); |
361 | ||
4c055a5a | 362 | mod_freq = redrat3_val_to_mod_freq(&rr3->irdata); |
3228bf81 | 363 | dev_dbg(dev, "Got mod_freq of %u\n", mod_freq); |
2154be65 | 364 | |
2154be65 | 365 | /* process each rr3 encoded byte into an int */ |
4c055a5a SY |
366 | sig_size = be16_to_cpu(rr3->irdata.sig_size); |
367 | for (i = 0; i < sig_size; i++) { | |
368 | offset = rr3->irdata.sigdata[i]; | |
369 | val = get_unaligned_be16(&rr3->irdata.lens[offset]); | |
370 | single_len = redrat3_len_to_us(val); | |
2154be65 | 371 | |
2154be65 JW |
372 | /* we should always get pulse/space/pulse/space samples */ |
373 | if (i % 2) | |
374 | rawir.pulse = false; | |
375 | else | |
376 | rawir.pulse = true; | |
377 | ||
378 | rawir.duration = US_TO_NS(single_len); | |
c53f9f00 JW |
379 | /* Save initial pulse length to fudge trailer */ |
380 | if (i == 0) | |
381 | trailer = rawir.duration; | |
2c594ffa JW |
382 | /* cap the value to IR_MAX_DURATION */ |
383 | rawir.duration &= IR_MAX_DURATION; | |
384 | ||
3228bf81 | 385 | dev_dbg(dev, "storing %s with duration %d (i: %d)\n", |
2154be65 JW |
386 | rawir.pulse ? "pulse" : "space", rawir.duration, i); |
387 | ir_raw_event_store_with_filter(rr3->rc, &rawir); | |
388 | } | |
389 | ||
390 | /* add a trailing space, if need be */ | |
391 | if (i % 2) { | |
392 | rawir.pulse = false; | |
393 | /* this duration is made up, and may not be ideal... */ | |
c53f9f00 JW |
394 | if (trailer < US_TO_NS(1000)) |
395 | rawir.duration = US_TO_NS(2800); | |
396 | else | |
397 | rawir.duration = trailer; | |
3228bf81 | 398 | dev_dbg(dev, "storing trailing space with duration %d\n", |
2154be65 JW |
399 | rawir.duration); |
400 | ir_raw_event_store_with_filter(rr3->rc, &rawir); | |
401 | } | |
402 | ||
3228bf81 | 403 | dev_dbg(dev, "calling ir_raw_event_handle\n"); |
2154be65 | 404 | ir_raw_event_handle(rr3->rc); |
2154be65 JW |
405 | } |
406 | ||
407 | /* Util fn to send rr3 cmds */ | |
408 | static u8 redrat3_send_cmd(int cmd, struct redrat3_dev *rr3) | |
409 | { | |
410 | struct usb_device *udev; | |
411 | u8 *data; | |
412 | int res; | |
413 | ||
414 | data = kzalloc(sizeof(u8), GFP_KERNEL); | |
415 | if (!data) | |
416 | return -ENOMEM; | |
417 | ||
418 | udev = rr3->udev; | |
419 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), cmd, | |
420 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
421 | 0x0000, 0x0000, data, sizeof(u8), HZ * 10); | |
422 | ||
423 | if (res < 0) { | |
424 | dev_err(rr3->dev, "%s: Error sending rr3 cmd res %d, data %d", | |
425 | __func__, res, *data); | |
426 | res = -EIO; | |
427 | } else | |
4c055a5a | 428 | res = data[0]; |
2154be65 JW |
429 | |
430 | kfree(data); | |
431 | ||
432 | return res; | |
433 | } | |
434 | ||
435 | /* Enables the long range detector and starts async receive */ | |
436 | static int redrat3_enable_detector(struct redrat3_dev *rr3) | |
437 | { | |
438 | struct device *dev = rr3->dev; | |
439 | u8 ret; | |
440 | ||
2154be65 JW |
441 | ret = redrat3_send_cmd(RR3_RC_DET_ENABLE, rr3); |
442 | if (ret != 0) | |
443 | dev_dbg(dev, "%s: unexpected ret of %d\n", | |
444 | __func__, ret); | |
445 | ||
446 | ret = redrat3_send_cmd(RR3_RC_DET_STATUS, rr3); | |
447 | if (ret != 1) { | |
448 | dev_err(dev, "%s: detector status: %d, should be 1\n", | |
449 | __func__, ret); | |
450 | return -EIO; | |
451 | } | |
452 | ||
2154be65 JW |
453 | redrat3_issue_async(rr3); |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
2154be65 JW |
458 | static inline void redrat3_delete(struct redrat3_dev *rr3, |
459 | struct usb_device *udev) | |
460 | { | |
2154be65 | 461 | usb_kill_urb(rr3->read_urb); |
bf139726 | 462 | usb_kill_urb(rr3->flash_urb); |
2154be65 | 463 | usb_free_urb(rr3->read_urb); |
bf139726 | 464 | usb_free_urb(rr3->flash_urb); |
fa7b9ac2 | 465 | usb_free_coherent(udev, le16_to_cpu(rr3->ep_in->wMaxPacketSize), |
2154be65 | 466 | rr3->bulk_in_buf, rr3->dma_in); |
2154be65 JW |
467 | |
468 | kfree(rr3); | |
469 | } | |
470 | ||
c53f9f00 | 471 | static u32 redrat3_get_timeout(struct redrat3_dev *rr3) |
2154be65 | 472 | { |
801b69f2 | 473 | __be32 *tmp; |
c53f9f00 | 474 | u32 timeout = MS_TO_US(150); /* a sane default, if things go haywire */ |
2154be65 JW |
475 | int len, ret, pipe; |
476 | ||
477 | len = sizeof(*tmp); | |
478 | tmp = kzalloc(len, GFP_KERNEL); | |
479 | if (!tmp) { | |
c53f9f00 | 480 | dev_warn(rr3->dev, "Memory allocation faillure\n"); |
2154be65 JW |
481 | return timeout; |
482 | } | |
483 | ||
c53f9f00 JW |
484 | pipe = usb_rcvctrlpipe(rr3->udev, 0); |
485 | ret = usb_control_msg(rr3->udev, pipe, RR3_GET_IR_PARAM, | |
2154be65 JW |
486 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, |
487 | RR3_IR_IO_SIG_TIMEOUT, 0, tmp, len, HZ * 5); | |
801b69f2 | 488 | if (ret != len) |
c53f9f00 | 489 | dev_warn(rr3->dev, "Failed to read timeout from hardware\n"); |
801b69f2 SY |
490 | else { |
491 | timeout = redrat3_len_to_us(be32_to_cpup(tmp)); | |
492 | ||
3228bf81 | 493 | dev_dbg(rr3->dev, "Got timeout of %d ms\n", timeout / 1000); |
2154be65 JW |
494 | } |
495 | ||
801b69f2 | 496 | kfree(tmp); |
2154be65 | 497 | |
2154be65 JW |
498 | return timeout; |
499 | } | |
500 | ||
501 | static void redrat3_reset(struct redrat3_dev *rr3) | |
502 | { | |
503 | struct usb_device *udev = rr3->udev; | |
504 | struct device *dev = rr3->dev; | |
505 | int rc, rxpipe, txpipe; | |
506 | u8 *val; | |
507 | int len = sizeof(u8); | |
508 | ||
2154be65 JW |
509 | rxpipe = usb_rcvctrlpipe(udev, 0); |
510 | txpipe = usb_sndctrlpipe(udev, 0); | |
511 | ||
fa7b9ac2 | 512 | val = kmalloc(len, GFP_KERNEL); |
2154be65 JW |
513 | if (!val) { |
514 | dev_err(dev, "Memory allocation failure\n"); | |
515 | return; | |
516 | } | |
517 | ||
518 | *val = 0x01; | |
519 | rc = usb_control_msg(udev, rxpipe, RR3_RESET, | |
520 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
521 | RR3_CPUCS_REG_ADDR, 0, val, len, HZ * 25); | |
3228bf81 | 522 | dev_dbg(dev, "reset returned 0x%02x\n", rc); |
2154be65 JW |
523 | |
524 | *val = 5; | |
525 | rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, | |
526 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, | |
527 | RR3_IR_IO_LENGTH_FUZZ, 0, val, len, HZ * 25); | |
3228bf81 | 528 | dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *val, rc); |
2154be65 JW |
529 | |
530 | *val = RR3_DRIVER_MAXLENS; | |
531 | rc = usb_control_msg(udev, txpipe, RR3_SET_IR_PARAM, | |
532 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, | |
533 | RR3_IR_IO_MAX_LENGTHS, 0, val, len, HZ * 25); | |
3228bf81 | 534 | dev_dbg(dev, "set ir parm max lens %d rc 0x%02x\n", *val, rc); |
2154be65 JW |
535 | |
536 | kfree(val); | |
537 | } | |
538 | ||
539 | static void redrat3_get_firmware_rev(struct redrat3_dev *rr3) | |
540 | { | |
541 | int rc = 0; | |
542 | char *buffer; | |
543 | ||
2154be65 JW |
544 | buffer = kzalloc(sizeof(char) * (RR3_FW_VERSION_LEN + 1), GFP_KERNEL); |
545 | if (!buffer) { | |
546 | dev_err(rr3->dev, "Memory allocation failure\n"); | |
547 | return; | |
548 | } | |
549 | ||
550 | rc = usb_control_msg(rr3->udev, usb_rcvctrlpipe(rr3->udev, 0), | |
551 | RR3_FW_VERSION, | |
552 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
553 | 0, 0, buffer, RR3_FW_VERSION_LEN, HZ * 5); | |
554 | ||
555 | if (rc >= 0) | |
556 | dev_info(rr3->dev, "Firmware rev: %s", buffer); | |
557 | else | |
558 | dev_err(rr3->dev, "Problem fetching firmware ID\n"); | |
559 | ||
560 | kfree(buffer); | |
2154be65 JW |
561 | } |
562 | ||
fa7b9ac2 | 563 | static void redrat3_read_packet_start(struct redrat3_dev *rr3, unsigned len) |
2154be65 | 564 | { |
4c055a5a SY |
565 | struct redrat3_header *header = rr3->bulk_in_buf; |
566 | unsigned pktlen, pkttype; | |
2154be65 | 567 | |
2154be65 | 568 | /* grab the Length and type of transfer */ |
4c055a5a SY |
569 | pktlen = be16_to_cpu(header->length); |
570 | pkttype = be16_to_cpu(header->transfer_type); | |
2154be65 | 571 | |
4c055a5a SY |
572 | if (pktlen > sizeof(rr3->irdata)) { |
573 | dev_warn(rr3->dev, "packet length %u too large\n", pktlen); | |
574 | return; | |
575 | } | |
2154be65 | 576 | |
4c055a5a | 577 | switch (pkttype) { |
2154be65 | 578 | case RR3_ERROR: |
4c055a5a SY |
579 | if (len >= sizeof(struct redrat3_error)) { |
580 | struct redrat3_error *error = rr3->bulk_in_buf; | |
581 | unsigned fw_error = be16_to_cpu(error->fw_error); | |
582 | redrat3_dump_fw_error(rr3, fw_error); | |
583 | } | |
2154be65 JW |
584 | break; |
585 | ||
586 | case RR3_MOD_SIGNAL_IN: | |
4c055a5a | 587 | memcpy(&rr3->irdata, rr3->bulk_in_buf, len); |
2154be65 | 588 | rr3->bytes_read = len; |
3228bf81 | 589 | dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", |
4c055a5a | 590 | rr3->bytes_read, pktlen); |
2154be65 JW |
591 | break; |
592 | ||
593 | default: | |
3228bf81 | 594 | dev_dbg(rr3->dev, "ignoring packet with type 0x%02x, len of %d, 0x%02x\n", |
4c055a5a | 595 | pkttype, len, pktlen); |
2154be65 JW |
596 | break; |
597 | } | |
598 | } | |
599 | ||
fa7b9ac2 | 600 | static void redrat3_read_packet_continue(struct redrat3_dev *rr3, unsigned len) |
2154be65 | 601 | { |
4c055a5a SY |
602 | void *irdata = &rr3->irdata; |
603 | ||
4c055a5a SY |
604 | if (len + rr3->bytes_read > sizeof(rr3->irdata)) { |
605 | dev_warn(rr3->dev, "too much data for packet\n"); | |
606 | rr3->bytes_read = 0; | |
607 | return; | |
608 | } | |
609 | ||
610 | memcpy(irdata + rr3->bytes_read, rr3->bulk_in_buf, len); | |
2154be65 JW |
611 | |
612 | rr3->bytes_read += len; | |
3228bf81 | 613 | dev_dbg(rr3->dev, "bytes_read %d, pktlen %d\n", rr3->bytes_read, |
4c055a5a | 614 | be16_to_cpu(rr3->irdata.header.length)); |
2154be65 JW |
615 | } |
616 | ||
617 | /* gather IR data from incoming urb, process it when we have enough */ | |
fa7b9ac2 | 618 | static int redrat3_get_ir_data(struct redrat3_dev *rr3, unsigned len) |
2154be65 JW |
619 | { |
620 | struct device *dev = rr3->dev; | |
4c055a5a | 621 | unsigned pkttype; |
2154be65 JW |
622 | int ret = 0; |
623 | ||
4c055a5a | 624 | if (rr3->bytes_read == 0 && len >= sizeof(struct redrat3_header)) { |
2154be65 JW |
625 | redrat3_read_packet_start(rr3, len); |
626 | } else if (rr3->bytes_read != 0) { | |
627 | redrat3_read_packet_continue(rr3, len); | |
628 | } else if (rr3->bytes_read == 0) { | |
629 | dev_err(dev, "error: no packet data read\n"); | |
630 | ret = -ENODATA; | |
631 | goto out; | |
632 | } | |
633 | ||
38e35a85 SY |
634 | if (rr3->bytes_read < be16_to_cpu(rr3->irdata.header.length) + |
635 | sizeof(struct redrat3_header)) | |
2154be65 JW |
636 | /* we're still accumulating data */ |
637 | return 0; | |
638 | ||
639 | /* if we get here, we've got IR data to decode */ | |
4c055a5a SY |
640 | pkttype = be16_to_cpu(rr3->irdata.header.transfer_type); |
641 | if (pkttype == RR3_MOD_SIGNAL_IN) | |
2154be65 JW |
642 | redrat3_process_ir_data(rr3); |
643 | else | |
3228bf81 | 644 | dev_dbg(dev, "discarding non-signal data packet (type 0x%02x)\n", |
4c055a5a | 645 | pkttype); |
2154be65 JW |
646 | |
647 | out: | |
648 | rr3->bytes_read = 0; | |
2154be65 JW |
649 | return ret; |
650 | } | |
651 | ||
652 | /* callback function from USB when async USB request has completed */ | |
801b69f2 | 653 | static void redrat3_handle_async(struct urb *urb) |
2154be65 JW |
654 | { |
655 | struct redrat3_dev *rr3; | |
dbea1880 | 656 | int ret; |
2154be65 JW |
657 | |
658 | if (!urb) | |
659 | return; | |
660 | ||
661 | rr3 = urb->context; | |
662 | if (!rr3) { | |
663 | pr_err("%s called with invalid context!\n", __func__); | |
664 | usb_unlink_urb(urb); | |
665 | return; | |
666 | } | |
667 | ||
2154be65 JW |
668 | switch (urb->status) { |
669 | case 0: | |
dbea1880 AV |
670 | ret = redrat3_get_ir_data(rr3, urb->actual_length); |
671 | if (!ret) { | |
672 | /* no error, prepare to read more */ | |
673 | redrat3_issue_async(rr3); | |
674 | } | |
2154be65 JW |
675 | break; |
676 | ||
677 | case -ECONNRESET: | |
678 | case -ENOENT: | |
679 | case -ESHUTDOWN: | |
680 | usb_unlink_urb(urb); | |
681 | return; | |
682 | ||
683 | case -EPIPE: | |
684 | default: | |
685 | dev_warn(rr3->dev, "Error: urb status = %d\n", urb->status); | |
686 | rr3->bytes_read = 0; | |
2154be65 JW |
687 | break; |
688 | } | |
2154be65 JW |
689 | } |
690 | ||
2154be65 JW |
691 | static u16 mod_freq_to_val(unsigned int mod_freq) |
692 | { | |
693 | int mult = 6000000; | |
694 | ||
695 | /* Clk used in mod. freq. generation is CLK24/4. */ | |
4c055a5a | 696 | return 65536 - (mult / mod_freq); |
2154be65 JW |
697 | } |
698 | ||
dbea1880 | 699 | static int redrat3_set_tx_carrier(struct rc_dev *rcdev, u32 carrier) |
2154be65 | 700 | { |
dbea1880 AV |
701 | struct redrat3_dev *rr3 = rcdev->priv; |
702 | struct device *dev = rr3->dev; | |
2154be65 | 703 | |
3228bf81 | 704 | dev_dbg(dev, "Setting modulation frequency to %u", carrier); |
48cafec9 DC |
705 | if (carrier == 0) |
706 | return -EINVAL; | |
707 | ||
2154be65 JW |
708 | rr3->carrier = carrier; |
709 | ||
710 | return carrier; | |
711 | } | |
712 | ||
dbea1880 AV |
713 | static int redrat3_transmit_ir(struct rc_dev *rcdev, unsigned *txbuf, |
714 | unsigned count) | |
2154be65 JW |
715 | { |
716 | struct redrat3_dev *rr3 = rcdev->priv; | |
717 | struct device *dev = rr3->dev; | |
4c055a5a | 718 | struct redrat3_irdata *irdata = NULL; |
fa7b9ac2 | 719 | int ret, ret_len; |
2154be65 | 720 | int lencheck, cur_sample_len, pipe; |
2154be65 | 721 | int *sample_lens = NULL; |
2154be65 | 722 | u8 curlencheck = 0; |
fa7b9ac2 | 723 | unsigned i, sendbuf_len; |
2154be65 | 724 | |
2154be65 JW |
725 | if (rr3->transmitting) { |
726 | dev_warn(dev, "%s: transmitter already in use\n", __func__); | |
727 | return -EAGAIN; | |
728 | } | |
729 | ||
671ea670 SY |
730 | if (count > RR3_MAX_SIG_SIZE - RR3_TX_TRAILER_LEN) |
731 | return -EINVAL; | |
2154be65 | 732 | |
dbea1880 | 733 | /* rr3 will disable rc detector on transmit */ |
2154be65 JW |
734 | rr3->transmitting = true; |
735 | ||
2154be65 JW |
736 | sample_lens = kzalloc(sizeof(int) * RR3_DRIVER_MAXLENS, GFP_KERNEL); |
737 | if (!sample_lens) { | |
738 | ret = -ENOMEM; | |
739 | goto out; | |
740 | } | |
741 | ||
4c055a5a SY |
742 | irdata = kzalloc(sizeof(*irdata), GFP_KERNEL); |
743 | if (!irdata) { | |
801b69f2 SY |
744 | ret = -ENOMEM; |
745 | goto out; | |
746 | } | |
747 | ||
2154be65 | 748 | for (i = 0; i < count; i++) { |
06eae25f | 749 | cur_sample_len = redrat3_us_to_len(txbuf[i]); |
801b69f2 SY |
750 | if (cur_sample_len > 0xffff) { |
751 | dev_warn(dev, "transmit period of %uus truncated to %uus\n", | |
752 | txbuf[i], redrat3_len_to_us(0xffff)); | |
753 | cur_sample_len = 0xffff; | |
754 | } | |
2154be65 | 755 | for (lencheck = 0; lencheck < curlencheck; lencheck++) { |
2154be65 JW |
756 | if (sample_lens[lencheck] == cur_sample_len) |
757 | break; | |
758 | } | |
759 | if (lencheck == curlencheck) { | |
3228bf81 | 760 | dev_dbg(dev, "txbuf[%d]=%u, pos %d, enc %u\n", |
2154be65 | 761 | i, txbuf[i], curlencheck, cur_sample_len); |
06eae25f | 762 | if (curlencheck < RR3_DRIVER_MAXLENS) { |
2154be65 JW |
763 | /* now convert the value to a proper |
764 | * rr3 value.. */ | |
765 | sample_lens[curlencheck] = cur_sample_len; | |
4c055a5a SY |
766 | put_unaligned_be16(cur_sample_len, |
767 | &irdata->lens[curlencheck]); | |
2154be65 JW |
768 | curlencheck++; |
769 | } else { | |
671ea670 SY |
770 | ret = -EINVAL; |
771 | goto out; | |
2154be65 JW |
772 | } |
773 | } | |
4c055a5a | 774 | irdata->sigdata[i] = lencheck; |
2154be65 JW |
775 | } |
776 | ||
4c055a5a SY |
777 | irdata->sigdata[count] = RR3_END_OF_SIGNAL; |
778 | irdata->sigdata[count + 1] = RR3_END_OF_SIGNAL; | |
2154be65 | 779 | |
4c055a5a SY |
780 | sendbuf_len = offsetof(struct redrat3_irdata, |
781 | sigdata[count + RR3_TX_TRAILER_LEN]); | |
2154be65 | 782 | /* fill in our packet header */ |
4c055a5a SY |
783 | irdata->header.length = cpu_to_be16(sendbuf_len - |
784 | sizeof(struct redrat3_header)); | |
785 | irdata->header.transfer_type = cpu_to_be16(RR3_MOD_SIGNAL_OUT); | |
786 | irdata->pause = cpu_to_be32(redrat3_len_to_us(100)); | |
787 | irdata->mod_freq_count = cpu_to_be16(mod_freq_to_val(rr3->carrier)); | |
788 | irdata->no_lengths = curlencheck; | |
789 | irdata->sig_size = cpu_to_be16(count + RR3_TX_TRAILER_LEN); | |
2154be65 JW |
790 | |
791 | pipe = usb_sndbulkpipe(rr3->udev, rr3->ep_out->bEndpointAddress); | |
4c055a5a | 792 | ret = usb_bulk_msg(rr3->udev, pipe, irdata, |
2154be65 | 793 | sendbuf_len, &ret_len, 10 * HZ); |
3228bf81 | 794 | dev_dbg(dev, "sent %d bytes, (ret %d)\n", ret_len, ret); |
2154be65 JW |
795 | |
796 | /* now tell the hardware to transmit what we sent it */ | |
797 | pipe = usb_rcvctrlpipe(rr3->udev, 0); | |
798 | ret = usb_control_msg(rr3->udev, pipe, RR3_TX_SEND_SIGNAL, | |
799 | USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, | |
4c055a5a | 800 | 0, 0, irdata, 2, HZ * 10); |
2154be65 JW |
801 | |
802 | if (ret < 0) | |
803 | dev_err(dev, "Error: control msg send failed, rc %d\n", ret); | |
804 | else | |
dbea1880 | 805 | ret = count; |
2154be65 JW |
806 | |
807 | out: | |
808 | kfree(sample_lens); | |
4c055a5a | 809 | kfree(irdata); |
2154be65 JW |
810 | |
811 | rr3->transmitting = false; | |
dbea1880 | 812 | /* rr3 re-enables rc detector because it was enabled before */ |
2154be65 JW |
813 | |
814 | return ret; | |
815 | } | |
816 | ||
bf139726 SY |
817 | static void redrat3_brightness_set(struct led_classdev *led_dev, enum |
818 | led_brightness brightness) | |
819 | { | |
820 | struct redrat3_dev *rr3 = container_of(led_dev, struct redrat3_dev, | |
821 | led); | |
822 | ||
823 | if (brightness != LED_OFF && atomic_cmpxchg(&rr3->flash, 0, 1) == 0) { | |
824 | int ret = usb_submit_urb(rr3->flash_urb, GFP_ATOMIC); | |
825 | if (ret != 0) { | |
826 | dev_dbg(rr3->dev, "%s: unexpected ret of %d\n", | |
827 | __func__, ret); | |
828 | atomic_set(&rr3->flash, 0); | |
829 | } | |
830 | } | |
831 | } | |
832 | ||
833 | static void redrat3_led_complete(struct urb *urb) | |
834 | { | |
835 | struct redrat3_dev *rr3 = urb->context; | |
836 | ||
837 | switch (urb->status) { | |
838 | case 0: | |
839 | break; | |
840 | case -ECONNRESET: | |
841 | case -ENOENT: | |
842 | case -ESHUTDOWN: | |
843 | usb_unlink_urb(urb); | |
844 | return; | |
845 | case -EPIPE: | |
846 | default: | |
847 | dev_dbg(rr3->dev, "Error: urb status = %d\n", urb->status); | |
848 | break; | |
849 | } | |
850 | ||
851 | rr3->led.brightness = LED_OFF; | |
852 | atomic_dec(&rr3->flash); | |
853 | } | |
854 | ||
2154be65 JW |
855 | static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3) |
856 | { | |
857 | struct device *dev = rr3->dev; | |
858 | struct rc_dev *rc; | |
859 | int ret = -ENODEV; | |
860 | u16 prod = le16_to_cpu(rr3->udev->descriptor.idProduct); | |
861 | ||
862 | rc = rc_allocate_device(); | |
863 | if (!rc) { | |
864 | dev_err(dev, "remote input dev allocation failed\n"); | |
865 | goto out; | |
866 | } | |
867 | ||
868 | snprintf(rr3->name, sizeof(rr3->name), "RedRat3%s " | |
869 | "Infrared Remote Transceiver (%04x:%04x)", | |
870 | prod == USB_RR3IIUSB_PRODUCT_ID ? "-II" : "", | |
871 | le16_to_cpu(rr3->udev->descriptor.idVendor), prod); | |
872 | ||
873 | usb_make_path(rr3->udev, rr3->phys, sizeof(rr3->phys)); | |
874 | ||
875 | rc->input_name = rr3->name; | |
876 | rc->input_phys = rr3->phys; | |
877 | usb_to_input_id(rr3->udev, &rc->input_id); | |
878 | rc->dev.parent = dev; | |
879 | rc->priv = rr3; | |
880 | rc->driver_type = RC_DRIVER_IR_RAW; | |
1a1934fa | 881 | rc_set_allowed_protocols(rc, RC_BIT_ALL); |
c53f9f00 | 882 | rc->timeout = US_TO_NS(2750); |
2154be65 JW |
883 | rc->tx_ir = redrat3_transmit_ir; |
884 | rc->s_tx_carrier = redrat3_set_tx_carrier; | |
885 | rc->driver_name = DRIVER_NAME; | |
06eae25f | 886 | rc->rx_resolution = US_TO_NS(2); |
2154be65 JW |
887 | rc->map_name = RC_MAP_HAUPPAUGE; |
888 | ||
889 | ret = rc_register_device(rc); | |
890 | if (ret < 0) { | |
891 | dev_err(dev, "remote dev registration failed\n"); | |
892 | goto out; | |
893 | } | |
894 | ||
895 | return rc; | |
896 | ||
897 | out: | |
898 | rc_free_device(rc); | |
899 | return NULL; | |
900 | } | |
901 | ||
4c62e976 GKH |
902 | static int redrat3_dev_probe(struct usb_interface *intf, |
903 | const struct usb_device_id *id) | |
2154be65 JW |
904 | { |
905 | struct usb_device *udev = interface_to_usbdev(intf); | |
906 | struct device *dev = &intf->dev; | |
907 | struct usb_host_interface *uhi; | |
908 | struct redrat3_dev *rr3; | |
909 | struct usb_endpoint_descriptor *ep; | |
910 | struct usb_endpoint_descriptor *ep_in = NULL; | |
911 | struct usb_endpoint_descriptor *ep_out = NULL; | |
912 | u8 addr, attrs; | |
913 | int pipe, i; | |
914 | int retval = -ENOMEM; | |
915 | ||
2154be65 JW |
916 | uhi = intf->cur_altsetting; |
917 | ||
918 | /* find our bulk-in and bulk-out endpoints */ | |
919 | for (i = 0; i < uhi->desc.bNumEndpoints; ++i) { | |
920 | ep = &uhi->endpoint[i].desc; | |
921 | addr = ep->bEndpointAddress; | |
922 | attrs = ep->bmAttributes; | |
923 | ||
924 | if ((ep_in == NULL) && | |
925 | ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) && | |
926 | ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == | |
927 | USB_ENDPOINT_XFER_BULK)) { | |
3228bf81 | 928 | dev_dbg(dev, "found bulk-in endpoint at 0x%02x\n", |
2154be65 JW |
929 | ep->bEndpointAddress); |
930 | /* data comes in on 0x82, 0x81 is for other data... */ | |
931 | if (ep->bEndpointAddress == RR3_BULK_IN_EP_ADDR) | |
932 | ep_in = ep; | |
933 | } | |
934 | ||
935 | if ((ep_out == NULL) && | |
936 | ((addr & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) && | |
937 | ((attrs & USB_ENDPOINT_XFERTYPE_MASK) == | |
938 | USB_ENDPOINT_XFER_BULK)) { | |
3228bf81 | 939 | dev_dbg(dev, "found bulk-out endpoint at 0x%02x\n", |
2154be65 JW |
940 | ep->bEndpointAddress); |
941 | ep_out = ep; | |
942 | } | |
943 | } | |
944 | ||
945 | if (!ep_in || !ep_out) { | |
946 | dev_err(dev, "Couldn't find both in and out endpoints\n"); | |
947 | retval = -ENODEV; | |
948 | goto no_endpoints; | |
949 | } | |
950 | ||
951 | /* allocate memory for our device state and initialize it */ | |
952 | rr3 = kzalloc(sizeof(*rr3), GFP_KERNEL); | |
953 | if (rr3 == NULL) { | |
954 | dev_err(dev, "Memory allocation failure\n"); | |
7eb75715 | 955 | goto no_endpoints; |
2154be65 JW |
956 | } |
957 | ||
958 | rr3->dev = &intf->dev; | |
959 | ||
960 | /* set up bulk-in endpoint */ | |
961 | rr3->read_urb = usb_alloc_urb(0, GFP_KERNEL); | |
962 | if (!rr3->read_urb) { | |
963 | dev_err(dev, "Read urb allocation failure\n"); | |
964 | goto error; | |
965 | } | |
966 | ||
967 | rr3->ep_in = ep_in; | |
fa7b9ac2 SY |
968 | rr3->bulk_in_buf = usb_alloc_coherent(udev, |
969 | le16_to_cpu(ep_in->wMaxPacketSize), GFP_ATOMIC, &rr3->dma_in); | |
2154be65 JW |
970 | if (!rr3->bulk_in_buf) { |
971 | dev_err(dev, "Read buffer allocation failure\n"); | |
972 | goto error; | |
973 | } | |
974 | ||
975 | pipe = usb_rcvbulkpipe(udev, ep_in->bEndpointAddress); | |
fa7b9ac2 SY |
976 | usb_fill_bulk_urb(rr3->read_urb, udev, pipe, rr3->bulk_in_buf, |
977 | le16_to_cpu(ep_in->wMaxPacketSize), redrat3_handle_async, rr3); | |
2154be65 JW |
978 | |
979 | rr3->ep_out = ep_out; | |
2154be65 JW |
980 | rr3->udev = udev; |
981 | ||
982 | redrat3_reset(rr3); | |
983 | redrat3_get_firmware_rev(rr3); | |
984 | ||
985 | /* might be all we need to do? */ | |
986 | retval = redrat3_enable_detector(rr3); | |
987 | if (retval < 0) | |
988 | goto error; | |
989 | ||
c53f9f00 JW |
990 | /* store current hardware timeout, in us, will use for kfifo resets */ |
991 | rr3->hw_timeout = redrat3_get_timeout(rr3); | |
992 | ||
2154be65 JW |
993 | /* default.. will get overridden by any sends with a freq defined */ |
994 | rr3->carrier = 38000; | |
995 | ||
bf139726 SY |
996 | /* led control */ |
997 | rr3->led.name = "redrat3:red:feedback"; | |
998 | rr3->led.default_trigger = "rc-feedback"; | |
999 | rr3->led.brightness_set = redrat3_brightness_set; | |
1000 | retval = led_classdev_register(&intf->dev, &rr3->led); | |
1001 | if (retval) | |
1002 | goto error; | |
1003 | ||
1004 | atomic_set(&rr3->flash, 0); | |
1005 | rr3->flash_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1006 | if (!rr3->flash_urb) { | |
1007 | retval = -ENOMEM; | |
1008 | goto led_free_error; | |
1009 | } | |
1010 | ||
1011 | /* setup packet is 'c0 b9 0000 0000 0001' */ | |
1012 | rr3->flash_control.bRequestType = 0xc0; | |
1013 | rr3->flash_control.bRequest = RR3_BLINK_LED; | |
1014 | rr3->flash_control.wLength = cpu_to_le16(1); | |
1015 | ||
1016 | usb_fill_control_urb(rr3->flash_urb, udev, usb_rcvctrlpipe(udev, 0), | |
1017 | (unsigned char *)&rr3->flash_control, | |
1018 | &rr3->flash_in_buf, sizeof(rr3->flash_in_buf), | |
1019 | redrat3_led_complete, rr3); | |
1020 | ||
2154be65 | 1021 | rr3->rc = redrat3_init_rc_dev(rr3); |
6ea7cf76 PST |
1022 | if (!rr3->rc) { |
1023 | retval = -ENOMEM; | |
bf139726 | 1024 | goto led_free_error; |
6ea7cf76 | 1025 | } |
2154be65 JW |
1026 | setup_timer(&rr3->rx_timeout, redrat3_rx_timeout, (unsigned long)rr3); |
1027 | ||
1028 | /* we can register the device now, as it is ready */ | |
1029 | usb_set_intfdata(intf, rr3); | |
1030 | ||
2154be65 JW |
1031 | return 0; |
1032 | ||
bf139726 SY |
1033 | led_free_error: |
1034 | led_classdev_unregister(&rr3->led); | |
2154be65 JW |
1035 | error: |
1036 | redrat3_delete(rr3, rr3->udev); | |
1037 | ||
1038 | no_endpoints: | |
1039 | dev_err(dev, "%s: retval = %x", __func__, retval); | |
1040 | ||
1041 | return retval; | |
1042 | } | |
1043 | ||
4c62e976 | 1044 | static void redrat3_dev_disconnect(struct usb_interface *intf) |
2154be65 JW |
1045 | { |
1046 | struct usb_device *udev = interface_to_usbdev(intf); | |
1047 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
1048 | ||
2154be65 JW |
1049 | if (!rr3) |
1050 | return; | |
1051 | ||
2154be65 JW |
1052 | usb_set_intfdata(intf, NULL); |
1053 | rc_unregister_device(rr3->rc); | |
bf139726 | 1054 | led_classdev_unregister(&rr3->led); |
c53f9f00 | 1055 | del_timer_sync(&rr3->rx_timeout); |
2154be65 | 1056 | redrat3_delete(rr3, udev); |
2154be65 JW |
1057 | } |
1058 | ||
1059 | static int redrat3_dev_suspend(struct usb_interface *intf, pm_message_t message) | |
1060 | { | |
1061 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
a36d5b61 | 1062 | |
bf139726 | 1063 | led_classdev_suspend(&rr3->led); |
2154be65 | 1064 | usb_kill_urb(rr3->read_urb); |
bf139726 | 1065 | usb_kill_urb(rr3->flash_urb); |
2154be65 JW |
1066 | return 0; |
1067 | } | |
1068 | ||
1069 | static int redrat3_dev_resume(struct usb_interface *intf) | |
1070 | { | |
1071 | struct redrat3_dev *rr3 = usb_get_intfdata(intf); | |
a36d5b61 | 1072 | |
2154be65 JW |
1073 | if (usb_submit_urb(rr3->read_urb, GFP_ATOMIC)) |
1074 | return -EIO; | |
bf139726 | 1075 | led_classdev_resume(&rr3->led); |
2154be65 JW |
1076 | return 0; |
1077 | } | |
1078 | ||
1079 | static struct usb_driver redrat3_dev_driver = { | |
1080 | .name = DRIVER_NAME, | |
1081 | .probe = redrat3_dev_probe, | |
4c62e976 | 1082 | .disconnect = redrat3_dev_disconnect, |
2154be65 JW |
1083 | .suspend = redrat3_dev_suspend, |
1084 | .resume = redrat3_dev_resume, | |
1085 | .reset_resume = redrat3_dev_resume, | |
1086 | .id_table = redrat3_dev_table | |
1087 | }; | |
1088 | ||
ecb3b2b3 | 1089 | module_usb_driver(redrat3_dev_driver); |
2154be65 JW |
1090 | |
1091 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1092 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1093 | MODULE_AUTHOR(DRIVER_AUTHOR2); | |
1094 | MODULE_LICENSE("GPL"); | |
1095 | MODULE_DEVICE_TABLE(usb, redrat3_dev_table); |