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21677cfc JW |
1 | /* |
2 | * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD | |
3 | * | |
4 | * Copyright(C) 2009 Jarod Wilson <jarod@wilsonet.com> | |
5 | * Portions based on the original lirc_imon driver, | |
6 | * Copyright(C) 2004 Venky Raju(dev@venky.ws) | |
7 | * | |
8 | * Huge thanks to R. Geoff Newbury for invaluable debugging on the | |
9 | * 0xffdc iMON devices, and for sending me one to hack on, without | |
10 | * which the support for them wouldn't be nearly as good. Thanks | |
11 | * also to the numerous 0xffdc device owners that tested auto-config | |
12 | * support for me and provided debug dumps from their devices. | |
13 | * | |
14 | * imon is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
29 | #include <linux/errno.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/uaccess.h> | |
35 | ||
36 | #include <linux/input.h> | |
37 | #include <linux/usb.h> | |
38 | #include <linux/usb/input.h> | |
39 | #include <media/ir-core.h> | |
40 | ||
41 | #include <linux/time.h> | |
42 | #include <linux/timer.h> | |
43 | ||
44 | #define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>" | |
45 | #define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display" | |
46 | #define MOD_NAME "imon" | |
47 | #define MOD_VERSION "0.9.1" | |
48 | ||
49 | #define DISPLAY_MINOR_BASE 144 | |
50 | #define DEVICE_NAME "lcd%d" | |
51 | ||
52 | #define BUF_CHUNK_SIZE 8 | |
53 | #define BUF_SIZE 128 | |
54 | ||
55 | #define BIT_DURATION 250 /* each bit received is 250us */ | |
56 | ||
57 | #define IMON_CLOCK_ENABLE_PACKETS 2 | |
58 | #define IMON_KEY_RELEASE_OFFSET 1000 | |
59 | ||
60 | /*** P R O T O T Y P E S ***/ | |
61 | ||
62 | /* USB Callback prototypes */ | |
63 | static int imon_probe(struct usb_interface *interface, | |
64 | const struct usb_device_id *id); | |
65 | static void imon_disconnect(struct usb_interface *interface); | |
66 | static void usb_rx_callback_intf0(struct urb *urb); | |
67 | static void usb_rx_callback_intf1(struct urb *urb); | |
68 | static void usb_tx_callback(struct urb *urb); | |
69 | ||
70 | /* suspend/resume support */ | |
71 | static int imon_resume(struct usb_interface *intf); | |
72 | static int imon_suspend(struct usb_interface *intf, pm_message_t message); | |
73 | ||
74 | /* Display file_operations function prototypes */ | |
75 | static int display_open(struct inode *inode, struct file *file); | |
76 | static int display_close(struct inode *inode, struct file *file); | |
77 | ||
78 | /* VFD write operation */ | |
79 | static ssize_t vfd_write(struct file *file, const char *buf, | |
80 | size_t n_bytes, loff_t *pos); | |
81 | ||
82 | /* LCD file_operations override function prototypes */ | |
83 | static ssize_t lcd_write(struct file *file, const char *buf, | |
84 | size_t n_bytes, loff_t *pos); | |
85 | ||
86 | /*** G L O B A L S ***/ | |
87 | ||
88 | struct imon_context { | |
89 | struct device *dev; | |
90 | struct ir_dev_props *props; | |
91 | struct ir_input_dev *ir; | |
92 | /* Newer devices have two interfaces */ | |
93 | struct usb_device *usbdev_intf0; | |
94 | struct usb_device *usbdev_intf1; | |
95 | ||
96 | bool display_supported; /* not all controllers do */ | |
97 | bool display_isopen; /* display port has been opened */ | |
98 | bool rf_isassociating; /* RF remote associating */ | |
99 | bool dev_present_intf0; /* USB device presence, interface 0 */ | |
100 | bool dev_present_intf1; /* USB device presence, interface 1 */ | |
101 | ||
102 | struct mutex lock; /* to lock this object */ | |
103 | wait_queue_head_t remove_ok; /* For unexpected USB disconnects */ | |
104 | ||
105 | struct usb_endpoint_descriptor *rx_endpoint_intf0; | |
106 | struct usb_endpoint_descriptor *rx_endpoint_intf1; | |
107 | struct usb_endpoint_descriptor *tx_endpoint; | |
108 | struct urb *rx_urb_intf0; | |
109 | struct urb *rx_urb_intf1; | |
110 | struct urb *tx_urb; | |
111 | bool tx_control; | |
112 | unsigned char usb_rx_buf[8]; | |
113 | unsigned char usb_tx_buf[8]; | |
114 | ||
115 | struct tx_t { | |
116 | unsigned char data_buf[35]; /* user data buffer */ | |
117 | struct completion finished; /* wait for write to finish */ | |
118 | bool busy; /* write in progress */ | |
119 | int status; /* status of tx completion */ | |
120 | } tx; | |
121 | ||
122 | u16 vendor; /* usb vendor ID */ | |
123 | u16 product; /* usb product ID */ | |
124 | ||
125 | struct input_dev *idev; /* input device for remote */ | |
126 | struct input_dev *touch; /* input device for touchscreen */ | |
127 | ||
128 | u32 kc; /* current input keycode */ | |
129 | u32 last_keycode; /* last reported input keycode */ | |
6718e8ad | 130 | u64 ir_type; /* iMON or MCE (RC6) IR protocol? */ |
21677cfc JW |
131 | u8 mce_toggle_bit; /* last mce toggle bit */ |
132 | bool release_code; /* some keys send a release code */ | |
133 | ||
134 | u8 display_type; /* store the display type */ | |
135 | bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */ | |
136 | ||
137 | char name_idev[128]; /* input device name */ | |
138 | char phys_idev[64]; /* input device phys path */ | |
139 | struct timer_list itimer; /* input device timer, need for rc6 */ | |
140 | ||
141 | char name_touch[128]; /* touch screen name */ | |
142 | char phys_touch[64]; /* touch screen phys path */ | |
143 | struct timer_list ttimer; /* touch screen timer */ | |
144 | int touch_x; /* x coordinate on touchscreen */ | |
145 | int touch_y; /* y coordinate on touchscreen */ | |
146 | }; | |
147 | ||
148 | #define TOUCH_TIMEOUT (HZ/30) | |
21677cfc JW |
149 | |
150 | /* vfd character device file operations */ | |
151 | static const struct file_operations vfd_fops = { | |
152 | .owner = THIS_MODULE, | |
153 | .open = &display_open, | |
154 | .write = &vfd_write, | |
155 | .release = &display_close | |
156 | }; | |
157 | ||
158 | /* lcd character device file operations */ | |
159 | static const struct file_operations lcd_fops = { | |
160 | .owner = THIS_MODULE, | |
161 | .open = &display_open, | |
162 | .write = &lcd_write, | |
163 | .release = &display_close | |
164 | }; | |
165 | ||
166 | enum { | |
167 | IMON_DISPLAY_TYPE_AUTO = 0, | |
168 | IMON_DISPLAY_TYPE_VFD = 1, | |
169 | IMON_DISPLAY_TYPE_LCD = 2, | |
170 | IMON_DISPLAY_TYPE_VGA = 3, | |
171 | IMON_DISPLAY_TYPE_NONE = 4, | |
172 | }; | |
173 | ||
21677cfc JW |
174 | enum { |
175 | IMON_KEY_IMON = 0, | |
176 | IMON_KEY_MCE = 1, | |
177 | IMON_KEY_PANEL = 2, | |
178 | }; | |
179 | ||
180 | /* | |
181 | * USB Device ID for iMON USB Control Boards | |
182 | * | |
183 | * The Windows drivers contain 6 different inf files, more or less one for | |
184 | * each new device until the 0x0034-0x0046 devices, which all use the same | |
185 | * driver. Some of the devices in the 34-46 range haven't been definitively | |
186 | * identified yet. Early devices have either a TriGem Computer, Inc. or a | |
187 | * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later | |
188 | * devices use the SoundGraph vendor ID (0x15c2). This driver only supports | |
189 | * the ffdc and later devices, which do onboard decoding. | |
190 | */ | |
191 | static struct usb_device_id imon_usb_id_table[] = { | |
192 | /* | |
193 | * Several devices with this same device ID, all use iMON_PAD.inf | |
194 | * SoundGraph iMON PAD (IR & VFD) | |
195 | * SoundGraph iMON PAD (IR & LCD) | |
196 | * SoundGraph iMON Knob (IR only) | |
197 | */ | |
198 | { USB_DEVICE(0x15c2, 0xffdc) }, | |
199 | ||
200 | /* | |
201 | * Newer devices, all driven by the latest iMON Windows driver, full | |
202 | * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2' | |
203 | * Need user input to fill in details on unknown devices. | |
204 | */ | |
205 | /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */ | |
206 | { USB_DEVICE(0x15c2, 0x0034) }, | |
207 | /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */ | |
208 | { USB_DEVICE(0x15c2, 0x0035) }, | |
209 | /* SoundGraph iMON OEM VFD (IR & VFD) */ | |
210 | { USB_DEVICE(0x15c2, 0x0036) }, | |
211 | /* device specifics unknown */ | |
212 | { USB_DEVICE(0x15c2, 0x0037) }, | |
213 | /* SoundGraph iMON OEM LCD (IR & LCD) */ | |
214 | { USB_DEVICE(0x15c2, 0x0038) }, | |
215 | /* SoundGraph iMON UltraBay (IR & LCD) */ | |
216 | { USB_DEVICE(0x15c2, 0x0039) }, | |
217 | /* device specifics unknown */ | |
218 | { USB_DEVICE(0x15c2, 0x003a) }, | |
219 | /* device specifics unknown */ | |
220 | { USB_DEVICE(0x15c2, 0x003b) }, | |
221 | /* SoundGraph iMON OEM Inside (IR only) */ | |
222 | { USB_DEVICE(0x15c2, 0x003c) }, | |
223 | /* device specifics unknown */ | |
224 | { USB_DEVICE(0x15c2, 0x003d) }, | |
225 | /* device specifics unknown */ | |
226 | { USB_DEVICE(0x15c2, 0x003e) }, | |
227 | /* device specifics unknown */ | |
228 | { USB_DEVICE(0x15c2, 0x003f) }, | |
229 | /* device specifics unknown */ | |
230 | { USB_DEVICE(0x15c2, 0x0040) }, | |
231 | /* SoundGraph iMON MINI (IR only) */ | |
232 | { USB_DEVICE(0x15c2, 0x0041) }, | |
233 | /* Antec Veris Multimedia Station EZ External (IR only) */ | |
234 | { USB_DEVICE(0x15c2, 0x0042) }, | |
235 | /* Antec Veris Multimedia Station Basic Internal (IR only) */ | |
236 | { USB_DEVICE(0x15c2, 0x0043) }, | |
237 | /* Antec Veris Multimedia Station Elite (IR & VFD) */ | |
238 | { USB_DEVICE(0x15c2, 0x0044) }, | |
239 | /* Antec Veris Multimedia Station Premiere (IR & LCD) */ | |
240 | { USB_DEVICE(0x15c2, 0x0045) }, | |
241 | /* device specifics unknown */ | |
242 | { USB_DEVICE(0x15c2, 0x0046) }, | |
243 | {} | |
244 | }; | |
245 | ||
246 | /* USB Device data */ | |
247 | static struct usb_driver imon_driver = { | |
248 | .name = MOD_NAME, | |
249 | .probe = imon_probe, | |
250 | .disconnect = imon_disconnect, | |
251 | .suspend = imon_suspend, | |
252 | .resume = imon_resume, | |
253 | .id_table = imon_usb_id_table, | |
254 | }; | |
255 | ||
256 | static struct usb_class_driver imon_vfd_class = { | |
257 | .name = DEVICE_NAME, | |
258 | .fops = &vfd_fops, | |
259 | .minor_base = DISPLAY_MINOR_BASE, | |
260 | }; | |
261 | ||
262 | static struct usb_class_driver imon_lcd_class = { | |
263 | .name = DEVICE_NAME, | |
264 | .fops = &lcd_fops, | |
265 | .minor_base = DISPLAY_MINOR_BASE, | |
266 | }; | |
267 | ||
268 | /* imon receiver front panel/knob key table */ | |
269 | static const struct { | |
270 | u64 hw_code; | |
271 | u32 keycode; | |
272 | } imon_panel_key_table[] = { | |
1f71baef MCC |
273 | { 0x000000000f00ffeell, KEY_PROG1 }, /* Go */ |
274 | { 0x000000001f00ffeell, KEY_AUDIO }, | |
275 | { 0x000000002000ffeell, KEY_VIDEO }, | |
276 | { 0x000000002100ffeell, KEY_CAMERA }, | |
277 | { 0x000000002700ffeell, KEY_DVD }, | |
278 | { 0x000000002300ffeell, KEY_TV }, | |
279 | { 0x000000000500ffeell, KEY_PREVIOUS }, | |
280 | { 0x000000000700ffeell, KEY_REWIND }, | |
281 | { 0x000000000400ffeell, KEY_STOP }, | |
282 | { 0x000000003c00ffeell, KEY_PLAYPAUSE }, | |
283 | { 0x000000000800ffeell, KEY_FASTFORWARD }, | |
284 | { 0x000000000600ffeell, KEY_NEXT }, | |
285 | { 0x000000010000ffeell, KEY_RIGHT }, | |
286 | { 0x000001000000ffeell, KEY_LEFT }, | |
287 | { 0x000000003d00ffeell, KEY_SELECT }, | |
288 | { 0x000100000000ffeell, KEY_VOLUMEUP }, | |
289 | { 0x010000000000ffeell, KEY_VOLUMEDOWN }, | |
290 | { 0x000000000100ffeell, KEY_MUTE }, | |
21677cfc | 291 | /* iMON Knob values */ |
1f71baef MCC |
292 | { 0x000100ffffffffeell, KEY_VOLUMEUP }, |
293 | { 0x010000ffffffffeell, KEY_VOLUMEDOWN }, | |
294 | { 0x000008ffffffffeell, KEY_MUTE }, | |
21677cfc JW |
295 | }; |
296 | ||
297 | /* to prevent races between open() and disconnect(), probing, etc */ | |
298 | static DEFINE_MUTEX(driver_lock); | |
299 | ||
300 | /* Module bookkeeping bits */ | |
301 | MODULE_AUTHOR(MOD_AUTHOR); | |
302 | MODULE_DESCRIPTION(MOD_DESC); | |
303 | MODULE_VERSION(MOD_VERSION); | |
304 | MODULE_LICENSE("GPL"); | |
305 | MODULE_DEVICE_TABLE(usb, imon_usb_id_table); | |
306 | ||
307 | static bool debug; | |
308 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
309 | MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes(default: no)"); | |
310 | ||
311 | /* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */ | |
312 | static int display_type; | |
313 | module_param(display_type, int, S_IRUGO); | |
314 | MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, " | |
315 | "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)"); | |
316 | ||
6718e8ad JW |
317 | static int pad_stabilize = 1; |
318 | module_param(pad_stabilize, int, S_IRUGO | S_IWUSR); | |
319 | MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD " | |
320 | "presses in arrow key mode. 0=disable, 1=enable (default)."); | |
21677cfc JW |
321 | |
322 | /* | |
323 | * In certain use cases, mouse mode isn't really helpful, and could actually | |
324 | * cause confusion, so allow disabling it when the IR device is open. | |
325 | */ | |
326 | static bool nomouse; | |
327 | module_param(nomouse, bool, S_IRUGO | S_IWUSR); | |
328 | MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is " | |
329 | "open. 0=don't disable, 1=disable. (default: don't disable)"); | |
330 | ||
331 | /* threshold at which a pad push registers as an arrow key in kbd mode */ | |
332 | static int pad_thresh; | |
333 | module_param(pad_thresh, int, S_IRUGO | S_IWUSR); | |
334 | MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an " | |
335 | "arrow key in kbd mode (default: 28)"); | |
336 | ||
337 | ||
338 | static void free_imon_context(struct imon_context *ictx) | |
339 | { | |
340 | struct device *dev = ictx->dev; | |
341 | ||
342 | usb_free_urb(ictx->tx_urb); | |
343 | usb_free_urb(ictx->rx_urb_intf0); | |
344 | usb_free_urb(ictx->rx_urb_intf1); | |
345 | kfree(ictx); | |
346 | ||
347 | dev_dbg(dev, "%s: iMON context freed\n", __func__); | |
348 | } | |
349 | ||
350 | /** | |
351 | * Called when the Display device (e.g. /dev/lcd0) | |
352 | * is opened by the application. | |
353 | */ | |
354 | static int display_open(struct inode *inode, struct file *file) | |
355 | { | |
356 | struct usb_interface *interface; | |
357 | struct imon_context *ictx = NULL; | |
358 | int subminor; | |
359 | int retval = 0; | |
360 | ||
361 | /* prevent races with disconnect */ | |
362 | mutex_lock(&driver_lock); | |
363 | ||
364 | subminor = iminor(inode); | |
365 | interface = usb_find_interface(&imon_driver, subminor); | |
366 | if (!interface) { | |
367 | err("%s: could not find interface for minor %d", | |
368 | __func__, subminor); | |
369 | retval = -ENODEV; | |
370 | goto exit; | |
371 | } | |
372 | ictx = usb_get_intfdata(interface); | |
373 | ||
374 | if (!ictx) { | |
375 | err("%s: no context found for minor %d", __func__, subminor); | |
376 | retval = -ENODEV; | |
377 | goto exit; | |
378 | } | |
379 | ||
380 | mutex_lock(&ictx->lock); | |
381 | ||
382 | if (!ictx->display_supported) { | |
383 | err("%s: display not supported by device", __func__); | |
384 | retval = -ENODEV; | |
385 | } else if (ictx->display_isopen) { | |
386 | err("%s: display port is already open", __func__); | |
387 | retval = -EBUSY; | |
388 | } else { | |
389 | ictx->display_isopen = 1; | |
390 | file->private_data = ictx; | |
391 | dev_dbg(ictx->dev, "display port opened\n"); | |
392 | } | |
393 | ||
394 | mutex_unlock(&ictx->lock); | |
395 | ||
396 | exit: | |
397 | mutex_unlock(&driver_lock); | |
398 | return retval; | |
399 | } | |
400 | ||
401 | /** | |
402 | * Called when the display device (e.g. /dev/lcd0) | |
403 | * is closed by the application. | |
404 | */ | |
405 | static int display_close(struct inode *inode, struct file *file) | |
406 | { | |
407 | struct imon_context *ictx = NULL; | |
408 | int retval = 0; | |
409 | ||
410 | ictx = (struct imon_context *)file->private_data; | |
411 | ||
412 | if (!ictx) { | |
413 | err("%s: no context for device", __func__); | |
414 | return -ENODEV; | |
415 | } | |
416 | ||
417 | mutex_lock(&ictx->lock); | |
418 | ||
419 | if (!ictx->display_supported) { | |
420 | err("%s: display not supported by device", __func__); | |
421 | retval = -ENODEV; | |
422 | } else if (!ictx->display_isopen) { | |
423 | err("%s: display is not open", __func__); | |
424 | retval = -EIO; | |
425 | } else { | |
426 | ictx->display_isopen = 0; | |
427 | dev_dbg(ictx->dev, "display port closed\n"); | |
428 | if (!ictx->dev_present_intf0) { | |
429 | /* | |
430 | * Device disconnected before close and IR port is not | |
431 | * open. If IR port is open, context will be deleted by | |
432 | * ir_close. | |
433 | */ | |
434 | mutex_unlock(&ictx->lock); | |
435 | free_imon_context(ictx); | |
436 | return retval; | |
437 | } | |
438 | } | |
439 | ||
440 | mutex_unlock(&ictx->lock); | |
441 | return retval; | |
442 | } | |
443 | ||
444 | /** | |
445 | * Sends a packet to the device -- this function must be called | |
446 | * with ictx->lock held. | |
447 | */ | |
448 | static int send_packet(struct imon_context *ictx) | |
449 | { | |
450 | unsigned int pipe; | |
451 | unsigned long timeout; | |
452 | int interval = 0; | |
453 | int retval = 0; | |
454 | struct usb_ctrlrequest *control_req = NULL; | |
455 | ||
456 | /* Check if we need to use control or interrupt urb */ | |
457 | if (!ictx->tx_control) { | |
458 | pipe = usb_sndintpipe(ictx->usbdev_intf0, | |
459 | ictx->tx_endpoint->bEndpointAddress); | |
460 | interval = ictx->tx_endpoint->bInterval; | |
461 | ||
462 | usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe, | |
463 | ictx->usb_tx_buf, | |
464 | sizeof(ictx->usb_tx_buf), | |
465 | usb_tx_callback, ictx, interval); | |
466 | ||
467 | ictx->tx_urb->actual_length = 0; | |
468 | } else { | |
469 | /* fill request into kmalloc'ed space: */ | |
470 | control_req = kmalloc(sizeof(struct usb_ctrlrequest), | |
471 | GFP_KERNEL); | |
472 | if (control_req == NULL) | |
473 | return -ENOMEM; | |
474 | ||
475 | /* setup packet is '21 09 0200 0001 0008' */ | |
476 | control_req->bRequestType = 0x21; | |
477 | control_req->bRequest = 0x09; | |
478 | control_req->wValue = cpu_to_le16(0x0200); | |
479 | control_req->wIndex = cpu_to_le16(0x0001); | |
480 | control_req->wLength = cpu_to_le16(0x0008); | |
481 | ||
482 | /* control pipe is endpoint 0x00 */ | |
483 | pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0); | |
484 | ||
485 | /* build the control urb */ | |
486 | usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0, | |
487 | pipe, (unsigned char *)control_req, | |
488 | ictx->usb_tx_buf, | |
489 | sizeof(ictx->usb_tx_buf), | |
490 | usb_tx_callback, ictx); | |
491 | ictx->tx_urb->actual_length = 0; | |
492 | } | |
493 | ||
494 | init_completion(&ictx->tx.finished); | |
495 | ictx->tx.busy = 1; | |
496 | smp_rmb(); /* ensure later readers know we're busy */ | |
497 | ||
498 | retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL); | |
499 | if (retval) { | |
500 | ictx->tx.busy = 0; | |
501 | smp_rmb(); /* ensure later readers know we're not busy */ | |
502 | err("%s: error submitting urb(%d)", __func__, retval); | |
503 | } else { | |
504 | /* Wait for transmission to complete (or abort) */ | |
505 | mutex_unlock(&ictx->lock); | |
506 | retval = wait_for_completion_interruptible( | |
507 | &ictx->tx.finished); | |
508 | if (retval) | |
509 | err("%s: task interrupted", __func__); | |
510 | mutex_lock(&ictx->lock); | |
511 | ||
512 | retval = ictx->tx.status; | |
513 | if (retval) | |
514 | err("%s: packet tx failed (%d)", __func__, retval); | |
515 | } | |
516 | ||
517 | kfree(control_req); | |
518 | ||
519 | /* | |
520 | * Induce a mandatory 5ms delay before returning, as otherwise, | |
521 | * send_packet can get called so rapidly as to overwhelm the device, | |
522 | * particularly on faster systems and/or those with quirky usb. | |
523 | */ | |
524 | timeout = msecs_to_jiffies(5); | |
525 | set_current_state(TASK_UNINTERRUPTIBLE); | |
526 | schedule_timeout(timeout); | |
527 | ||
528 | return retval; | |
529 | } | |
530 | ||
531 | /** | |
532 | * Sends an associate packet to the iMON 2.4G. | |
533 | * | |
534 | * This might not be such a good idea, since it has an id collision with | |
535 | * some versions of the "IR & VFD" combo. The only way to determine if it | |
536 | * is an RF version is to look at the product description string. (Which | |
537 | * we currently do not fetch). | |
538 | */ | |
539 | static int send_associate_24g(struct imon_context *ictx) | |
540 | { | |
541 | int retval; | |
542 | const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00, | |
543 | 0x00, 0x00, 0x00, 0x20 }; | |
544 | ||
545 | if (!ictx) { | |
546 | err("%s: no context for device", __func__); | |
547 | return -ENODEV; | |
548 | } | |
549 | ||
550 | if (!ictx->dev_present_intf0) { | |
551 | err("%s: no iMON device present", __func__); | |
552 | return -ENODEV; | |
553 | } | |
554 | ||
555 | memcpy(ictx->usb_tx_buf, packet, sizeof(packet)); | |
556 | retval = send_packet(ictx); | |
557 | ||
558 | return retval; | |
559 | } | |
560 | ||
561 | /** | |
562 | * Sends packets to setup and show clock on iMON display | |
563 | * | |
564 | * Arguments: year - last 2 digits of year, month - 1..12, | |
565 | * day - 1..31, dow - day of the week (0-Sun...6-Sat), | |
566 | * hour - 0..23, minute - 0..59, second - 0..59 | |
567 | */ | |
568 | static int send_set_imon_clock(struct imon_context *ictx, | |
569 | unsigned int year, unsigned int month, | |
570 | unsigned int day, unsigned int dow, | |
571 | unsigned int hour, unsigned int minute, | |
572 | unsigned int second) | |
573 | { | |
574 | unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8]; | |
575 | int retval = 0; | |
576 | int i; | |
577 | ||
578 | if (!ictx) { | |
579 | err("%s: no context for device", __func__); | |
580 | return -ENODEV; | |
581 | } | |
582 | ||
583 | switch (ictx->display_type) { | |
584 | case IMON_DISPLAY_TYPE_LCD: | |
585 | clock_enable_pkt[0][0] = 0x80; | |
586 | clock_enable_pkt[0][1] = year; | |
587 | clock_enable_pkt[0][2] = month-1; | |
588 | clock_enable_pkt[0][3] = day; | |
589 | clock_enable_pkt[0][4] = hour; | |
590 | clock_enable_pkt[0][5] = minute; | |
591 | clock_enable_pkt[0][6] = second; | |
592 | ||
593 | clock_enable_pkt[1][0] = 0x80; | |
594 | clock_enable_pkt[1][1] = 0; | |
595 | clock_enable_pkt[1][2] = 0; | |
596 | clock_enable_pkt[1][3] = 0; | |
597 | clock_enable_pkt[1][4] = 0; | |
598 | clock_enable_pkt[1][5] = 0; | |
599 | clock_enable_pkt[1][6] = 0; | |
600 | ||
601 | if (ictx->product == 0xffdc) { | |
602 | clock_enable_pkt[0][7] = 0x50; | |
603 | clock_enable_pkt[1][7] = 0x51; | |
604 | } else { | |
605 | clock_enable_pkt[0][7] = 0x88; | |
606 | clock_enable_pkt[1][7] = 0x8a; | |
607 | } | |
608 | ||
609 | break; | |
610 | ||
611 | case IMON_DISPLAY_TYPE_VFD: | |
612 | clock_enable_pkt[0][0] = year; | |
613 | clock_enable_pkt[0][1] = month-1; | |
614 | clock_enable_pkt[0][2] = day; | |
615 | clock_enable_pkt[0][3] = dow; | |
616 | clock_enable_pkt[0][4] = hour; | |
617 | clock_enable_pkt[0][5] = minute; | |
618 | clock_enable_pkt[0][6] = second; | |
619 | clock_enable_pkt[0][7] = 0x40; | |
620 | ||
621 | clock_enable_pkt[1][0] = 0; | |
622 | clock_enable_pkt[1][1] = 0; | |
623 | clock_enable_pkt[1][2] = 1; | |
624 | clock_enable_pkt[1][3] = 0; | |
625 | clock_enable_pkt[1][4] = 0; | |
626 | clock_enable_pkt[1][5] = 0; | |
627 | clock_enable_pkt[1][6] = 0; | |
628 | clock_enable_pkt[1][7] = 0x42; | |
629 | ||
630 | break; | |
631 | ||
632 | default: | |
633 | return -ENODEV; | |
634 | } | |
635 | ||
636 | for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) { | |
637 | memcpy(ictx->usb_tx_buf, clock_enable_pkt[i], 8); | |
638 | retval = send_packet(ictx); | |
639 | if (retval) { | |
640 | err("%s: send_packet failed for packet %d", | |
641 | __func__, i); | |
642 | break; | |
643 | } | |
644 | } | |
645 | ||
646 | return retval; | |
647 | } | |
648 | ||
649 | /** | |
650 | * These are the sysfs functions to handle the association on the iMON 2.4G LT. | |
651 | */ | |
652 | static ssize_t show_associate_remote(struct device *d, | |
653 | struct device_attribute *attr, | |
654 | char *buf) | |
655 | { | |
656 | struct imon_context *ictx = dev_get_drvdata(d); | |
657 | ||
658 | if (!ictx) | |
659 | return -ENODEV; | |
660 | ||
661 | mutex_lock(&ictx->lock); | |
662 | if (ictx->rf_isassociating) | |
663 | strcpy(buf, "associating\n"); | |
664 | else | |
665 | strcpy(buf, "closed\n"); | |
666 | ||
667 | dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for " | |
668 | "instructions on how to associate your iMON 2.4G DT/LT " | |
669 | "remote\n"); | |
670 | mutex_unlock(&ictx->lock); | |
671 | return strlen(buf); | |
672 | } | |
673 | ||
674 | static ssize_t store_associate_remote(struct device *d, | |
675 | struct device_attribute *attr, | |
676 | const char *buf, size_t count) | |
677 | { | |
678 | struct imon_context *ictx; | |
679 | ||
680 | ictx = dev_get_drvdata(d); | |
681 | ||
682 | if (!ictx) | |
683 | return -ENODEV; | |
684 | ||
685 | mutex_lock(&ictx->lock); | |
686 | ictx->rf_isassociating = 1; | |
687 | send_associate_24g(ictx); | |
688 | mutex_unlock(&ictx->lock); | |
689 | ||
690 | return count; | |
691 | } | |
692 | ||
693 | /** | |
694 | * sysfs functions to control internal imon clock | |
695 | */ | |
696 | static ssize_t show_imon_clock(struct device *d, | |
697 | struct device_attribute *attr, char *buf) | |
698 | { | |
699 | struct imon_context *ictx = dev_get_drvdata(d); | |
700 | size_t len; | |
701 | ||
702 | if (!ictx) | |
703 | return -ENODEV; | |
704 | ||
705 | mutex_lock(&ictx->lock); | |
706 | ||
707 | if (!ictx->display_supported) { | |
708 | len = snprintf(buf, PAGE_SIZE, "Not supported."); | |
709 | } else { | |
710 | len = snprintf(buf, PAGE_SIZE, | |
711 | "To set the clock on your iMON display:\n" | |
712 | "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n" | |
713 | "%s", ictx->display_isopen ? | |
714 | "\nNOTE: imon device must be closed\n" : ""); | |
715 | } | |
716 | ||
717 | mutex_unlock(&ictx->lock); | |
718 | ||
719 | return len; | |
720 | } | |
721 | ||
722 | static ssize_t store_imon_clock(struct device *d, | |
723 | struct device_attribute *attr, | |
724 | const char *buf, size_t count) | |
725 | { | |
726 | struct imon_context *ictx = dev_get_drvdata(d); | |
727 | ssize_t retval; | |
728 | unsigned int year, month, day, dow, hour, minute, second; | |
729 | ||
730 | if (!ictx) | |
731 | return -ENODEV; | |
732 | ||
733 | mutex_lock(&ictx->lock); | |
734 | ||
735 | if (!ictx->display_supported) { | |
736 | retval = -ENODEV; | |
737 | goto exit; | |
738 | } else if (ictx->display_isopen) { | |
739 | retval = -EBUSY; | |
740 | goto exit; | |
741 | } | |
742 | ||
743 | if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow, | |
744 | &hour, &minute, &second) != 7) { | |
745 | retval = -EINVAL; | |
746 | goto exit; | |
747 | } | |
748 | ||
749 | if ((month < 1 || month > 12) || | |
750 | (day < 1 || day > 31) || (dow > 6) || | |
751 | (hour > 23) || (minute > 59) || (second > 59)) { | |
752 | retval = -EINVAL; | |
753 | goto exit; | |
754 | } | |
755 | ||
756 | retval = send_set_imon_clock(ictx, year, month, day, dow, | |
757 | hour, minute, second); | |
758 | if (retval) | |
759 | goto exit; | |
760 | ||
761 | retval = count; | |
762 | exit: | |
763 | mutex_unlock(&ictx->lock); | |
764 | ||
765 | return retval; | |
766 | } | |
767 | ||
768 | ||
769 | static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock, | |
770 | store_imon_clock); | |
771 | ||
772 | static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote, | |
773 | store_associate_remote); | |
774 | ||
775 | static struct attribute *imon_display_sysfs_entries[] = { | |
776 | &dev_attr_imon_clock.attr, | |
777 | NULL | |
778 | }; | |
779 | ||
780 | static struct attribute_group imon_display_attribute_group = { | |
781 | .attrs = imon_display_sysfs_entries | |
782 | }; | |
783 | ||
784 | static struct attribute *imon_rf_sysfs_entries[] = { | |
785 | &dev_attr_associate_remote.attr, | |
786 | NULL | |
787 | }; | |
788 | ||
789 | static struct attribute_group imon_rf_attribute_group = { | |
790 | .attrs = imon_rf_sysfs_entries | |
791 | }; | |
792 | ||
793 | /** | |
794 | * Writes data to the VFD. The iMON VFD is 2x16 characters | |
795 | * and requires data in 5 consecutive USB interrupt packets, | |
796 | * each packet but the last carrying 7 bytes. | |
797 | * | |
798 | * I don't know if the VFD board supports features such as | |
799 | * scrolling, clearing rows, blanking, etc. so at | |
800 | * the caller must provide a full screen of data. If fewer | |
801 | * than 32 bytes are provided spaces will be appended to | |
802 | * generate a full screen. | |
803 | */ | |
804 | static ssize_t vfd_write(struct file *file, const char *buf, | |
805 | size_t n_bytes, loff_t *pos) | |
806 | { | |
807 | int i; | |
808 | int offset; | |
809 | int seq; | |
810 | int retval = 0; | |
811 | struct imon_context *ictx; | |
812 | const unsigned char vfd_packet6[] = { | |
813 | 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF }; | |
814 | ||
815 | ictx = (struct imon_context *)file->private_data; | |
816 | if (!ictx) { | |
817 | err("%s: no context for device", __func__); | |
818 | return -ENODEV; | |
819 | } | |
820 | ||
821 | mutex_lock(&ictx->lock); | |
822 | ||
823 | if (!ictx->dev_present_intf0) { | |
824 | err("%s: no iMON device present", __func__); | |
825 | retval = -ENODEV; | |
826 | goto exit; | |
827 | } | |
828 | ||
829 | if (n_bytes <= 0 || n_bytes > 32) { | |
830 | err("%s: invalid payload size", __func__); | |
831 | retval = -EINVAL; | |
832 | goto exit; | |
833 | } | |
834 | ||
835 | if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) { | |
836 | retval = -EFAULT; | |
837 | goto exit; | |
838 | } | |
839 | ||
840 | /* Pad with spaces */ | |
841 | for (i = n_bytes; i < 32; ++i) | |
842 | ictx->tx.data_buf[i] = ' '; | |
843 | ||
844 | for (i = 32; i < 35; ++i) | |
845 | ictx->tx.data_buf[i] = 0xFF; | |
846 | ||
847 | offset = 0; | |
848 | seq = 0; | |
849 | ||
850 | do { | |
851 | memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7); | |
852 | ictx->usb_tx_buf[7] = (unsigned char) seq; | |
853 | ||
854 | retval = send_packet(ictx); | |
855 | if (retval) { | |
856 | err("%s: send packet failed for packet #%d", | |
857 | __func__, seq/2); | |
858 | goto exit; | |
859 | } else { | |
860 | seq += 2; | |
861 | offset += 7; | |
862 | } | |
863 | ||
864 | } while (offset < 35); | |
865 | ||
866 | /* Send packet #6 */ | |
867 | memcpy(ictx->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6)); | |
868 | ictx->usb_tx_buf[7] = (unsigned char) seq; | |
869 | retval = send_packet(ictx); | |
870 | if (retval) | |
871 | err("%s: send packet failed for packet #%d", | |
872 | __func__, seq / 2); | |
873 | ||
874 | exit: | |
875 | mutex_unlock(&ictx->lock); | |
876 | ||
877 | return (!retval) ? n_bytes : retval; | |
878 | } | |
879 | ||
880 | /** | |
881 | * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte | |
882 | * packets. We accept data as 16 hexadecimal digits, followed by a | |
883 | * newline (to make it easy to drive the device from a command-line | |
884 | * -- even though the actual binary data is a bit complicated). | |
885 | * | |
886 | * The device itself is not a "traditional" text-mode display. It's | |
887 | * actually a 16x96 pixel bitmap display. That means if you want to | |
888 | * display text, you've got to have your own "font" and translate the | |
889 | * text into bitmaps for display. This is really flexible (you can | |
890 | * display whatever diacritics you need, and so on), but it's also | |
891 | * a lot more complicated than most LCDs... | |
892 | */ | |
893 | static ssize_t lcd_write(struct file *file, const char *buf, | |
894 | size_t n_bytes, loff_t *pos) | |
895 | { | |
896 | int retval = 0; | |
897 | struct imon_context *ictx; | |
898 | ||
899 | ictx = (struct imon_context *)file->private_data; | |
900 | if (!ictx) { | |
901 | err("%s: no context for device", __func__); | |
902 | return -ENODEV; | |
903 | } | |
904 | ||
905 | mutex_lock(&ictx->lock); | |
906 | ||
907 | if (!ictx->display_supported) { | |
908 | err("%s: no iMON display present", __func__); | |
909 | retval = -ENODEV; | |
910 | goto exit; | |
911 | } | |
912 | ||
913 | if (n_bytes != 8) { | |
914 | err("%s: invalid payload size: %d (expecting 8)", | |
915 | __func__, (int) n_bytes); | |
916 | retval = -EINVAL; | |
917 | goto exit; | |
918 | } | |
919 | ||
920 | if (copy_from_user(ictx->usb_tx_buf, buf, 8)) { | |
921 | retval = -EFAULT; | |
922 | goto exit; | |
923 | } | |
924 | ||
925 | retval = send_packet(ictx); | |
926 | if (retval) { | |
927 | err("%s: send packet failed!", __func__); | |
928 | goto exit; | |
929 | } else { | |
930 | dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n", | |
931 | __func__, (int) n_bytes); | |
932 | } | |
933 | exit: | |
934 | mutex_unlock(&ictx->lock); | |
935 | return (!retval) ? n_bytes : retval; | |
936 | } | |
937 | ||
938 | /** | |
939 | * Callback function for USB core API: transmit data | |
940 | */ | |
941 | static void usb_tx_callback(struct urb *urb) | |
942 | { | |
943 | struct imon_context *ictx; | |
944 | ||
945 | if (!urb) | |
946 | return; | |
947 | ictx = (struct imon_context *)urb->context; | |
948 | if (!ictx) | |
949 | return; | |
950 | ||
951 | ictx->tx.status = urb->status; | |
952 | ||
953 | /* notify waiters that write has finished */ | |
954 | ictx->tx.busy = 0; | |
955 | smp_rmb(); /* ensure later readers know we're not busy */ | |
956 | complete(&ictx->tx.finished); | |
957 | } | |
958 | ||
959 | /** | |
960 | * mce/rc6 keypresses have no distinct release code, use timer | |
961 | */ | |
962 | static void imon_mce_timeout(unsigned long data) | |
963 | { | |
964 | struct imon_context *ictx = (struct imon_context *)data; | |
965 | ||
966 | input_report_key(ictx->idev, ictx->last_keycode, 0); | |
967 | input_sync(ictx->idev); | |
968 | } | |
969 | ||
970 | /** | |
971 | * report touchscreen input | |
972 | */ | |
973 | static void imon_touch_display_timeout(unsigned long data) | |
974 | { | |
975 | struct imon_context *ictx = (struct imon_context *)data; | |
976 | ||
977 | if (!ictx->display_type == IMON_DISPLAY_TYPE_VGA) | |
978 | return; | |
979 | ||
980 | input_report_abs(ictx->touch, ABS_X, ictx->touch_x); | |
981 | input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); | |
982 | input_report_key(ictx->touch, BTN_TOUCH, 0x00); | |
983 | input_sync(ictx->touch); | |
984 | } | |
985 | ||
986 | /** | |
987 | * iMON IR receivers support two different signal sets -- those used by | |
988 | * the iMON remotes, and those used by the Windows MCE remotes (which is | |
989 | * really just RC-6), but only one or the other at a time, as the signals | |
990 | * are decoded onboard the receiver. | |
991 | */ | |
6718e8ad | 992 | int imon_ir_change_protocol(void *priv, u64 ir_type) |
21677cfc JW |
993 | { |
994 | int retval; | |
6718e8ad | 995 | struct imon_context *ictx = priv; |
21677cfc | 996 | struct device *dev = ictx->dev; |
6718e8ad | 997 | bool pad_mouse; |
21677cfc JW |
998 | unsigned char ir_proto_packet[] = { |
999 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 }; | |
1000 | ||
666a9ed8 | 1001 | if (ir_type && !(ir_type & ictx->props->allowed_protos)) |
21677cfc JW |
1002 | dev_warn(dev, "Looks like you're trying to use an IR protocol " |
1003 | "this device does not support\n"); | |
1004 | ||
6718e8ad JW |
1005 | switch (ir_type) { |
1006 | case IR_TYPE_RC6: | |
21677cfc JW |
1007 | dev_dbg(dev, "Configuring IR receiver for MCE protocol\n"); |
1008 | ir_proto_packet[0] = 0x01; | |
6718e8ad | 1009 | pad_mouse = false; |
21677cfc JW |
1010 | init_timer(&ictx->itimer); |
1011 | ictx->itimer.data = (unsigned long)ictx; | |
1012 | ictx->itimer.function = imon_mce_timeout; | |
1013 | break; | |
6718e8ad JW |
1014 | case IR_TYPE_UNKNOWN: |
1015 | case IR_TYPE_OTHER: | |
666a9ed8 JW |
1016 | dev_dbg(dev, "Configuring IR receiver for iMON protocol\n"); |
1017 | if (pad_stabilize) | |
6718e8ad | 1018 | pad_mouse = true; |
666a9ed8 JW |
1019 | else { |
1020 | dev_dbg(dev, "PAD stabilize functionality disabled\n"); | |
6718e8ad JW |
1021 | pad_mouse = false; |
1022 | } | |
21677cfc | 1023 | /* ir_proto_packet[0] = 0x00; // already the default */ |
6718e8ad | 1024 | ir_type = IR_TYPE_OTHER; |
21677cfc JW |
1025 | break; |
1026 | default: | |
6718e8ad | 1027 | dev_warn(dev, "Unsupported IR protocol specified, overriding " |
666a9ed8 JW |
1028 | "to iMON IR protocol\n"); |
1029 | if (pad_stabilize) | |
6718e8ad | 1030 | pad_mouse = true; |
666a9ed8 JW |
1031 | else { |
1032 | dev_dbg(dev, "PAD stabilize functionality disabled\n"); | |
6718e8ad JW |
1033 | pad_mouse = false; |
1034 | } | |
1035 | /* ir_proto_packet[0] = 0x00; // already the default */ | |
1036 | ir_type = IR_TYPE_OTHER; | |
21677cfc JW |
1037 | break; |
1038 | } | |
1039 | ||
1040 | memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet)); | |
1041 | ||
1042 | retval = send_packet(ictx); | |
6718e8ad JW |
1043 | if (retval) |
1044 | goto out; | |
1045 | ||
1046 | ictx->ir_type = ir_type; | |
1047 | ictx->pad_mouse = pad_mouse; | |
1048 | ||
1049 | out: | |
1050 | return retval; | |
21677cfc JW |
1051 | } |
1052 | ||
1053 | static inline int tv2int(const struct timeval *a, const struct timeval *b) | |
1054 | { | |
1055 | int usecs = 0; | |
1056 | int sec = 0; | |
1057 | ||
1058 | if (b->tv_usec > a->tv_usec) { | |
1059 | usecs = 1000000; | |
1060 | sec--; | |
1061 | } | |
1062 | ||
1063 | usecs += a->tv_usec - b->tv_usec; | |
1064 | ||
1065 | sec += a->tv_sec - b->tv_sec; | |
1066 | sec *= 1000; | |
1067 | usecs /= 1000; | |
1068 | sec += usecs; | |
1069 | ||
1070 | if (sec < 0) | |
1071 | sec = 1000; | |
1072 | ||
1073 | return sec; | |
1074 | } | |
1075 | ||
1076 | /** | |
1077 | * The directional pad behaves a bit differently, depending on whether this is | |
1078 | * one of the older ffdc devices or a newer device. Newer devices appear to | |
1079 | * have a higher resolution matrix for more precise mouse movement, but it | |
1080 | * makes things overly sensitive in keyboard mode, so we do some interesting | |
1081 | * contortions to make it less touchy. Older devices run through the same | |
1082 | * routine with shorter timeout and a smaller threshold. | |
1083 | */ | |
1084 | static int stabilize(int a, int b, u16 timeout, u16 threshold) | |
1085 | { | |
1086 | struct timeval ct; | |
1087 | static struct timeval prev_time = {0, 0}; | |
1088 | static struct timeval hit_time = {0, 0}; | |
1089 | static int x, y, prev_result, hits; | |
1090 | int result = 0; | |
1091 | int msec, msec_hit; | |
1092 | ||
1093 | do_gettimeofday(&ct); | |
1094 | msec = tv2int(&ct, &prev_time); | |
1095 | msec_hit = tv2int(&ct, &hit_time); | |
1096 | ||
1097 | if (msec > 100) { | |
1098 | x = 0; | |
1099 | y = 0; | |
1100 | hits = 0; | |
1101 | } | |
1102 | ||
1103 | x += a; | |
1104 | y += b; | |
1105 | ||
1106 | prev_time = ct; | |
1107 | ||
1108 | if (abs(x) > threshold || abs(y) > threshold) { | |
1109 | if (abs(y) > abs(x)) | |
1110 | result = (y > 0) ? 0x7F : 0x80; | |
1111 | else | |
1112 | result = (x > 0) ? 0x7F00 : 0x8000; | |
1113 | ||
1114 | x = 0; | |
1115 | y = 0; | |
1116 | ||
1117 | if (result == prev_result) { | |
1118 | hits++; | |
1119 | ||
1120 | if (hits > 3) { | |
1121 | switch (result) { | |
1122 | case 0x7F: | |
1123 | y = 17 * threshold / 30; | |
1124 | break; | |
1125 | case 0x80: | |
1126 | y -= 17 * threshold / 30; | |
1127 | break; | |
1128 | case 0x7F00: | |
1129 | x = 17 * threshold / 30; | |
1130 | break; | |
1131 | case 0x8000: | |
1132 | x -= 17 * threshold / 30; | |
1133 | break; | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | if (hits == 2 && msec_hit < timeout) { | |
1138 | result = 0; | |
1139 | hits = 1; | |
1140 | } | |
1141 | } else { | |
1142 | prev_result = result; | |
1143 | hits = 1; | |
1144 | hit_time = ct; | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | return result; | |
1149 | } | |
1150 | ||
1151 | static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 hw_code) | |
1152 | { | |
1153 | u32 scancode = be32_to_cpu(hw_code); | |
1154 | u32 keycode; | |
1155 | u32 release; | |
1156 | bool is_release_code = false; | |
1157 | ||
1158 | /* Look for the initial press of a button */ | |
1159 | keycode = ir_g_keycode_from_table(ictx->idev, scancode); | |
1160 | ||
1161 | /* Look for the release of a button */ | |
1162 | if (keycode == KEY_RESERVED) { | |
1163 | release = scancode & ~0x4000; | |
1164 | keycode = ir_g_keycode_from_table(ictx->idev, release); | |
1165 | if (keycode != KEY_RESERVED) | |
1166 | is_release_code = true; | |
1167 | } | |
1168 | ||
1169 | ictx->release_code = is_release_code; | |
1170 | ||
1171 | return keycode; | |
1172 | } | |
1173 | ||
1174 | static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 hw_code) | |
1175 | { | |
1176 | u32 scancode = be32_to_cpu(hw_code); | |
1177 | u32 keycode; | |
1178 | ||
1179 | #define MCE_KEY_MASK 0x7000 | |
1180 | #define MCE_TOGGLE_BIT 0x8000 | |
1181 | ||
1182 | /* | |
1183 | * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx | |
1184 | * (the toggle bit flipping between alternating key presses), while | |
1185 | * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep | |
1186 | * the table trim, we always or in the bits to look up 0x8000ff4xx, | |
1187 | * but we can't or them into all codes, as some keys are decoded in | |
1188 | * a different way w/o the same use of the toggle bit... | |
1189 | */ | |
1190 | if ((scancode >> 24) & 0x80) | |
1191 | scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT; | |
1192 | ||
1193 | keycode = ir_g_keycode_from_table(ictx->idev, scancode); | |
1194 | ||
1195 | return keycode; | |
1196 | } | |
1197 | ||
1198 | static u32 imon_panel_key_lookup(u64 hw_code) | |
1199 | { | |
1200 | int i; | |
1201 | u64 code = be64_to_cpu(hw_code); | |
1202 | u32 keycode; | |
1203 | ||
1204 | for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) | |
1205 | if (imon_panel_key_table[i].hw_code == (code | 0xffee)) | |
1206 | break; | |
1207 | ||
1208 | keycode = imon_panel_key_table[i % IMON_KEY_RELEASE_OFFSET].keycode; | |
1209 | ||
1210 | return keycode; | |
1211 | } | |
1212 | ||
1213 | static bool imon_mouse_event(struct imon_context *ictx, | |
1214 | unsigned char *buf, int len) | |
1215 | { | |
1216 | char rel_x = 0x00, rel_y = 0x00; | |
1217 | u8 right_shift = 1; | |
1218 | bool mouse_input = 1; | |
1219 | int dir = 0; | |
1220 | ||
1221 | /* newer iMON device PAD or mouse button */ | |
1222 | if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) { | |
1223 | rel_x = buf[2]; | |
1224 | rel_y = buf[3]; | |
1225 | right_shift = 1; | |
1226 | /* 0xffdc iMON PAD or mouse button input */ | |
1227 | } else if (ictx->product == 0xffdc && (buf[0] & 0x40) && | |
1228 | !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) { | |
1229 | rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | | |
1230 | (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6; | |
1231 | if (buf[0] & 0x02) | |
1232 | rel_x |= ~0x0f; | |
1233 | rel_x = rel_x + rel_x / 2; | |
1234 | rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | | |
1235 | (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6; | |
1236 | if (buf[0] & 0x01) | |
1237 | rel_y |= ~0x0f; | |
1238 | rel_y = rel_y + rel_y / 2; | |
1239 | right_shift = 2; | |
1240 | /* some ffdc devices decode mouse buttons differently... */ | |
1241 | } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) { | |
1242 | right_shift = 2; | |
1243 | /* ch+/- buttons, which we use for an emulated scroll wheel */ | |
1244 | } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) { | |
1245 | dir = 1; | |
1246 | } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) { | |
1247 | dir = -1; | |
1248 | } else | |
1249 | mouse_input = 0; | |
1250 | ||
1251 | if (mouse_input) { | |
1252 | dev_dbg(ictx->dev, "sending mouse data via input subsystem\n"); | |
1253 | ||
1254 | if (dir) { | |
1255 | input_report_rel(ictx->idev, REL_WHEEL, dir); | |
1256 | } else if (rel_x || rel_y) { | |
1257 | input_report_rel(ictx->idev, REL_X, rel_x); | |
1258 | input_report_rel(ictx->idev, REL_Y, rel_y); | |
1259 | } else { | |
1260 | input_report_key(ictx->idev, BTN_LEFT, buf[1] & 0x1); | |
1261 | input_report_key(ictx->idev, BTN_RIGHT, | |
1262 | buf[1] >> right_shift & 0x1); | |
1263 | } | |
1264 | input_sync(ictx->idev); | |
1265 | ictx->last_keycode = ictx->kc; | |
1266 | } | |
1267 | ||
1268 | return mouse_input; | |
1269 | } | |
1270 | ||
1271 | static void imon_touch_event(struct imon_context *ictx, unsigned char *buf) | |
1272 | { | |
1273 | mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT); | |
1274 | ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4); | |
1275 | ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf)); | |
1276 | input_report_abs(ictx->touch, ABS_X, ictx->touch_x); | |
1277 | input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); | |
1278 | input_report_key(ictx->touch, BTN_TOUCH, 0x01); | |
1279 | input_sync(ictx->touch); | |
1280 | } | |
1281 | ||
1282 | static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf) | |
1283 | { | |
1284 | int dir = 0; | |
1285 | char rel_x = 0x00, rel_y = 0x00; | |
1286 | u16 timeout, threshold; | |
1287 | u64 temp_key; | |
1288 | u32 remote_key; | |
1289 | ||
1290 | /* | |
1291 | * The imon directional pad functions more like a touchpad. Bytes 3 & 4 | |
1292 | * contain a position coordinate (x,y), with each component ranging | |
1293 | * from -14 to 14. We want to down-sample this to only 4 discrete values | |
1294 | * for up/down/left/right arrow keys. Also, when you get too close to | |
1295 | * diagonals, it has a tendancy to jump back and forth, so lets try to | |
1296 | * ignore when they get too close. | |
1297 | */ | |
1298 | if (ictx->product != 0xffdc) { | |
1299 | /* first, pad to 8 bytes so it conforms with everything else */ | |
1300 | buf[5] = buf[6] = buf[7] = 0; | |
1301 | timeout = 500; /* in msecs */ | |
1302 | /* (2*threshold) x (2*threshold) square */ | |
1303 | threshold = pad_thresh ? pad_thresh : 28; | |
1304 | rel_x = buf[2]; | |
1305 | rel_y = buf[3]; | |
1306 | ||
6718e8ad | 1307 | if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) { |
21677cfc JW |
1308 | if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) { |
1309 | dir = stabilize((int)rel_x, (int)rel_y, | |
1310 | timeout, threshold); | |
1311 | if (!dir) { | |
1312 | ictx->kc = KEY_UNKNOWN; | |
1313 | return; | |
1314 | } | |
1315 | buf[2] = dir & 0xFF; | |
1316 | buf[3] = (dir >> 8) & 0xFF; | |
1317 | memcpy(&temp_key, buf, sizeof(temp_key)); | |
1318 | remote_key = (u32) (le64_to_cpu(temp_key) | |
1319 | & 0xffffffff); | |
1320 | ictx->kc = imon_remote_key_lookup(ictx, | |
1321 | remote_key); | |
1322 | } | |
1323 | } else { | |
1324 | if (abs(rel_y) > abs(rel_x)) { | |
1325 | buf[2] = (rel_y > 0) ? 0x7F : 0x80; | |
1326 | buf[3] = 0; | |
1327 | ictx->kc = (rel_y > 0) ? KEY_DOWN : KEY_UP; | |
1328 | } else { | |
1329 | buf[2] = 0; | |
1330 | buf[3] = (rel_x > 0) ? 0x7F : 0x80; | |
1331 | ictx->kc = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT; | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | /* | |
1336 | * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad | |
1337 | * device (15c2:ffdc). The remote generates various codes from | |
1338 | * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates | |
1339 | * 0x688301b7 and the right one 0x688481b7. All other keys generate | |
1340 | * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with | |
1341 | * reversed endianess. Extract direction from buffer, rotate endianess, | |
1342 | * adjust sign and feed the values into stabilize(). The resulting codes | |
1343 | * will be 0x01008000, 0x01007F00, which match the newer devices. | |
1344 | */ | |
1345 | } else { | |
1346 | timeout = 10; /* in msecs */ | |
1347 | /* (2*threshold) x (2*threshold) square */ | |
1348 | threshold = pad_thresh ? pad_thresh : 15; | |
1349 | ||
1350 | /* buf[1] is x */ | |
1351 | rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | | |
1352 | (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6; | |
1353 | if (buf[0] & 0x02) | |
1354 | rel_x |= ~0x10+1; | |
1355 | /* buf[2] is y */ | |
1356 | rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | | |
1357 | (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6; | |
1358 | if (buf[0] & 0x01) | |
1359 | rel_y |= ~0x10+1; | |
1360 | ||
1361 | buf[0] = 0x01; | |
1362 | buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0; | |
1363 | ||
6718e8ad | 1364 | if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) { |
21677cfc JW |
1365 | dir = stabilize((int)rel_x, (int)rel_y, |
1366 | timeout, threshold); | |
1367 | if (!dir) { | |
1368 | ictx->kc = KEY_UNKNOWN; | |
1369 | return; | |
1370 | } | |
1371 | buf[2] = dir & 0xFF; | |
1372 | buf[3] = (dir >> 8) & 0xFF; | |
1373 | memcpy(&temp_key, buf, sizeof(temp_key)); | |
1374 | remote_key = (u32) (le64_to_cpu(temp_key) & 0xffffffff); | |
1375 | ictx->kc = imon_remote_key_lookup(ictx, remote_key); | |
1376 | } else { | |
1377 | if (abs(rel_y) > abs(rel_x)) { | |
1378 | buf[2] = (rel_y > 0) ? 0x7F : 0x80; | |
1379 | buf[3] = 0; | |
1380 | ictx->kc = (rel_y > 0) ? KEY_DOWN : KEY_UP; | |
1381 | } else { | |
1382 | buf[2] = 0; | |
1383 | buf[3] = (rel_x > 0) ? 0x7F : 0x80; | |
1384 | ictx->kc = (rel_x > 0) ? KEY_RIGHT : KEY_LEFT; | |
1385 | } | |
1386 | } | |
1387 | } | |
1388 | } | |
1389 | ||
1390 | static int imon_parse_press_type(struct imon_context *ictx, | |
1391 | unsigned char *buf, u8 ktype) | |
1392 | { | |
1393 | int press_type = 0; | |
db190fc1 JW |
1394 | int rep_delay = ictx->idev->rep[REP_DELAY]; |
1395 | int rep_period = ictx->idev->rep[REP_PERIOD]; | |
21677cfc JW |
1396 | |
1397 | /* key release of 0x02XXXXXX key */ | |
1398 | if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00) | |
1399 | ictx->kc = ictx->last_keycode; | |
1400 | ||
1401 | /* mouse button release on (some) 0xffdc devices */ | |
1402 | else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 && | |
1403 | buf[2] == 0x81 && buf[3] == 0xb7) | |
1404 | ictx->kc = ictx->last_keycode; | |
1405 | ||
1406 | /* mouse button release on (some other) 0xffdc devices */ | |
1407 | else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 && | |
1408 | buf[2] == 0x81 && buf[3] == 0xb7) | |
1409 | ictx->kc = ictx->last_keycode; | |
1410 | ||
1411 | /* mce-specific button handling */ | |
1412 | else if (ktype == IMON_KEY_MCE) { | |
1413 | /* initial press */ | |
1414 | if (ictx->kc != ictx->last_keycode | |
1415 | || buf[2] != ictx->mce_toggle_bit) { | |
1416 | ictx->last_keycode = ictx->kc; | |
1417 | ictx->mce_toggle_bit = buf[2]; | |
1418 | press_type = 1; | |
1419 | mod_timer(&ictx->itimer, | |
db190fc1 | 1420 | jiffies + msecs_to_jiffies(rep_delay)); |
21677cfc JW |
1421 | /* repeat */ |
1422 | } else { | |
1423 | press_type = 2; | |
1424 | mod_timer(&ictx->itimer, | |
db190fc1 | 1425 | jiffies + msecs_to_jiffies(rep_period)); |
21677cfc JW |
1426 | } |
1427 | ||
1428 | /* incoherent or irrelevant data */ | |
1429 | } else if (ictx->kc == KEY_RESERVED) | |
1430 | press_type = -EINVAL; | |
1431 | ||
1432 | /* key release of 0xXXXXXXb7 key */ | |
1433 | else if (ictx->release_code) | |
1434 | press_type = 0; | |
1435 | ||
1436 | /* this is a button press */ | |
1437 | else | |
1438 | press_type = 1; | |
1439 | ||
1440 | return press_type; | |
1441 | } | |
1442 | ||
1443 | /** | |
1444 | * Process the incoming packet | |
1445 | */ | |
1446 | static void imon_incoming_packet(struct imon_context *ictx, | |
1447 | struct urb *urb, int intf) | |
1448 | { | |
1449 | int len = urb->actual_length; | |
1450 | unsigned char *buf = urb->transfer_buffer; | |
1451 | struct device *dev = ictx->dev; | |
1452 | u32 kc; | |
1453 | bool norelease = 0; | |
1454 | int i; | |
1455 | u64 temp_key; | |
1456 | u64 panel_key = 0; | |
1457 | u32 remote_key = 0; | |
1458 | struct input_dev *idev = NULL; | |
1459 | int press_type = 0; | |
1460 | int msec; | |
1461 | struct timeval t; | |
1462 | static struct timeval prev_time = { 0, 0 }; | |
1463 | u8 ktype = IMON_KEY_IMON; | |
1464 | ||
1465 | idev = ictx->idev; | |
1466 | ||
1467 | /* filter out junk data on the older 0xffdc imon devices */ | |
1468 | if ((buf[0] == 0xff) && (buf[7] == 0xff)) | |
1469 | return; | |
1470 | ||
1471 | /* Figure out what key was pressed */ | |
1472 | memcpy(&temp_key, buf, sizeof(temp_key)); | |
1473 | if (len == 8 && buf[7] == 0xee) { | |
1474 | ktype = IMON_KEY_PANEL; | |
1475 | panel_key = le64_to_cpu(temp_key); | |
1476 | kc = imon_panel_key_lookup(panel_key); | |
1477 | } else { | |
1478 | remote_key = (u32) (le64_to_cpu(temp_key) & 0xffffffff); | |
6718e8ad | 1479 | if (ictx->ir_type == IR_TYPE_RC6) { |
21677cfc JW |
1480 | if (buf[0] == 0x80) |
1481 | ktype = IMON_KEY_MCE; | |
1482 | kc = imon_mce_key_lookup(ictx, remote_key); | |
1483 | } else | |
1484 | kc = imon_remote_key_lookup(ictx, remote_key); | |
1485 | } | |
1486 | ||
1487 | /* keyboard/mouse mode toggle button */ | |
1488 | if (kc == KEY_KEYBOARD && !ictx->release_code) { | |
1489 | ictx->last_keycode = kc; | |
1490 | if (!nomouse) { | |
1491 | ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1; | |
1492 | dev_dbg(dev, "toggling to %s mode\n", | |
1493 | ictx->pad_mouse ? "mouse" : "keyboard"); | |
1494 | return; | |
1495 | } else { | |
1496 | ictx->pad_mouse = 0; | |
1497 | dev_dbg(dev, "mouse mode disabled, passing key value\n"); | |
1498 | } | |
1499 | } | |
1500 | ||
1501 | ictx->kc = kc; | |
1502 | ||
1503 | /* send touchscreen events through input subsystem if touchpad data */ | |
1504 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 && | |
1505 | buf[7] == 0x86) { | |
1506 | imon_touch_event(ictx, buf); | |
1507 | ||
1508 | /* look for mouse events with pad in mouse mode */ | |
1509 | } else if (ictx->pad_mouse) { | |
1510 | if (imon_mouse_event(ictx, buf, len)) | |
1511 | return; | |
1512 | } | |
1513 | ||
1514 | /* Now for some special handling to convert pad input to arrow keys */ | |
1515 | if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) || | |
1516 | ((len == 8) && (buf[0] & 0x40) && | |
1517 | !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) { | |
1518 | len = 8; | |
1519 | imon_pad_to_keys(ictx, buf); | |
1520 | norelease = 1; | |
1521 | } | |
1522 | ||
1523 | if (debug) { | |
1524 | printk(KERN_INFO "intf%d decoded packet: ", intf); | |
1525 | for (i = 0; i < len; ++i) | |
1526 | printk("%02x ", buf[i]); | |
1527 | printk("\n"); | |
1528 | } | |
1529 | ||
1530 | press_type = imon_parse_press_type(ictx, buf, ktype); | |
1531 | if (press_type < 0) | |
1532 | goto not_input_data; | |
1533 | ||
1534 | if (ictx->kc == KEY_UNKNOWN) | |
1535 | goto unknown_key; | |
1536 | ||
1537 | /* KEY_MUTE repeats from MCE and knob need to be suppressed */ | |
1538 | if ((ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) | |
1539 | && (buf[7] == 0xee || ktype == IMON_KEY_MCE)) { | |
1540 | do_gettimeofday(&t); | |
1541 | msec = tv2int(&t, &prev_time); | |
1542 | prev_time = t; | |
db190fc1 | 1543 | if (msec < idev->rep[REP_DELAY]) |
21677cfc JW |
1544 | return; |
1545 | } | |
1546 | ||
1547 | input_report_key(idev, ictx->kc, press_type); | |
1548 | input_sync(idev); | |
1549 | ||
1550 | /* panel keys and some remote keys don't generate a release */ | |
1551 | if (panel_key || norelease) { | |
1552 | input_report_key(idev, ictx->kc, 0); | |
1553 | input_sync(idev); | |
1554 | } | |
1555 | ||
1556 | ictx->last_keycode = ictx->kc; | |
1557 | ||
1558 | return; | |
1559 | ||
1560 | unknown_key: | |
1561 | dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__, | |
1562 | (panel_key ? be64_to_cpu(panel_key) : | |
1563 | be32_to_cpu(remote_key))); | |
1564 | return; | |
1565 | ||
1566 | not_input_data: | |
1567 | if (len != 8) { | |
1568 | dev_warn(dev, "imon %s: invalid incoming packet " | |
1569 | "size (len = %d, intf%d)\n", __func__, len, intf); | |
1570 | return; | |
1571 | } | |
1572 | ||
1573 | /* iMON 2.4G associate frame */ | |
1574 | if (buf[0] == 0x00 && | |
1575 | buf[2] == 0xFF && /* REFID */ | |
1576 | buf[3] == 0xFF && | |
1577 | buf[4] == 0xFF && | |
1578 | buf[5] == 0xFF && /* iMON 2.4G */ | |
1579 | ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */ | |
1580 | (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */ | |
1581 | dev_warn(dev, "%s: remote associated refid=%02X\n", | |
1582 | __func__, buf[1]); | |
1583 | ictx->rf_isassociating = 0; | |
1584 | } | |
1585 | } | |
1586 | ||
1587 | /** | |
1588 | * Callback function for USB core API: receive data | |
1589 | */ | |
1590 | static void usb_rx_callback_intf0(struct urb *urb) | |
1591 | { | |
1592 | struct imon_context *ictx; | |
1593 | int intfnum = 0; | |
1594 | ||
1595 | if (!urb) | |
1596 | return; | |
1597 | ||
1598 | ictx = (struct imon_context *)urb->context; | |
1599 | if (!ictx) | |
1600 | return; | |
1601 | ||
1602 | switch (urb->status) { | |
1603 | case -ENOENT: /* usbcore unlink successful! */ | |
1604 | return; | |
1605 | ||
1606 | case -ESHUTDOWN: /* transport endpoint was shut down */ | |
1607 | break; | |
1608 | ||
1609 | case 0: | |
1610 | imon_incoming_packet(ictx, urb, intfnum); | |
1611 | break; | |
1612 | ||
1613 | default: | |
1614 | dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", | |
1615 | __func__, urb->status); | |
1616 | break; | |
1617 | } | |
1618 | ||
1619 | usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); | |
1620 | } | |
1621 | ||
1622 | static void usb_rx_callback_intf1(struct urb *urb) | |
1623 | { | |
1624 | struct imon_context *ictx; | |
1625 | int intfnum = 1; | |
1626 | ||
1627 | if (!urb) | |
1628 | return; | |
1629 | ||
1630 | ictx = (struct imon_context *)urb->context; | |
1631 | if (!ictx) | |
1632 | return; | |
1633 | ||
1634 | switch (urb->status) { | |
1635 | case -ENOENT: /* usbcore unlink successful! */ | |
1636 | return; | |
1637 | ||
1638 | case -ESHUTDOWN: /* transport endpoint was shut down */ | |
1639 | break; | |
1640 | ||
1641 | case 0: | |
1642 | imon_incoming_packet(ictx, urb, intfnum); | |
1643 | break; | |
1644 | ||
1645 | default: | |
1646 | dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", | |
1647 | __func__, urb->status); | |
1648 | break; | |
1649 | } | |
1650 | ||
1651 | usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); | |
1652 | } | |
1653 | ||
1654 | static struct input_dev *imon_init_idev(struct imon_context *ictx) | |
1655 | { | |
1656 | struct input_dev *idev; | |
1657 | struct ir_dev_props *props; | |
1658 | struct ir_input_dev *ir; | |
1659 | int ret, i; | |
21677cfc JW |
1660 | |
1661 | idev = input_allocate_device(); | |
1662 | if (!idev) { | |
1663 | dev_err(ictx->dev, "remote input dev allocation failed\n"); | |
1664 | goto idev_alloc_failed; | |
1665 | } | |
1666 | ||
1667 | props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL); | |
1668 | if (!props) { | |
1669 | dev_err(ictx->dev, "remote ir dev props allocation failed\n"); | |
1670 | goto props_alloc_failed; | |
1671 | } | |
1672 | ||
1673 | ir = kzalloc(sizeof(struct ir_input_dev), GFP_KERNEL); | |
1674 | if (!props) { | |
1675 | dev_err(ictx->dev, "remote ir input dev allocation failed\n"); | |
1676 | goto ir_dev_alloc_failed; | |
1677 | } | |
1678 | ||
1679 | snprintf(ictx->name_idev, sizeof(ictx->name_idev), | |
1680 | "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product); | |
1681 | idev->name = ictx->name_idev; | |
1682 | ||
1683 | usb_make_path(ictx->usbdev_intf0, ictx->phys_idev, | |
1684 | sizeof(ictx->phys_idev)); | |
1685 | strlcat(ictx->phys_idev, "/input0", sizeof(ictx->phys_idev)); | |
1686 | idev->phys = ictx->phys_idev; | |
1687 | ||
db190fc1 | 1688 | idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL); |
21677cfc JW |
1689 | |
1690 | idev->keybit[BIT_WORD(BTN_MOUSE)] = | |
1691 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); | |
1692 | idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | | |
1693 | BIT_MASK(REL_WHEEL); | |
1694 | ||
1695 | /* panel and/or knob code support */ | |
1696 | for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) { | |
1697 | u32 kc = imon_panel_key_table[i].keycode; | |
1698 | __set_bit(kc, idev->keybit); | |
1699 | } | |
1700 | ||
6718e8ad | 1701 | props->priv = ictx; |
21677cfc | 1702 | props->driver_type = RC_DRIVER_SCANCODE; |
6718e8ad JW |
1703 | /* IR_TYPE_OTHER maps to iMON PAD remote, IR_TYPE_RC6 to MCE remote */ |
1704 | props->allowed_protos = IR_TYPE_OTHER | IR_TYPE_RC6; | |
1705 | props->change_protocol = imon_ir_change_protocol; | |
1706 | ictx->props = props; | |
21677cfc JW |
1707 | |
1708 | ictx->ir = ir; | |
1709 | memcpy(&ir->dev, ictx->dev, sizeof(struct device)); | |
1710 | ||
1711 | usb_to_input_id(ictx->usbdev_intf0, &idev->id); | |
1712 | idev->dev.parent = ictx->dev; | |
1713 | ||
1714 | input_set_drvdata(idev, ir); | |
1715 | ||
6718e8ad | 1716 | ret = ir_input_register(idev, RC_MAP_IMON_PAD, props, MOD_NAME); |
21677cfc JW |
1717 | if (ret < 0) { |
1718 | dev_err(ictx->dev, "remote input dev register failed\n"); | |
1719 | goto idev_register_failed; | |
1720 | } | |
1721 | ||
1722 | return idev; | |
1723 | ||
1724 | idev_register_failed: | |
1725 | kfree(ir); | |
1726 | ir_dev_alloc_failed: | |
1727 | kfree(props); | |
1728 | props_alloc_failed: | |
1729 | input_free_device(idev); | |
1730 | idev_alloc_failed: | |
1731 | ||
1732 | return NULL; | |
1733 | } | |
1734 | ||
1735 | static struct input_dev *imon_init_touch(struct imon_context *ictx) | |
1736 | { | |
1737 | struct input_dev *touch; | |
1738 | int ret; | |
1739 | ||
1740 | touch = input_allocate_device(); | |
1741 | if (!touch) { | |
1742 | dev_err(ictx->dev, "touchscreen input dev allocation failed\n"); | |
1743 | goto touch_alloc_failed; | |
1744 | } | |
1745 | ||
1746 | snprintf(ictx->name_touch, sizeof(ictx->name_touch), | |
1747 | "iMON USB Touchscreen (%04x:%04x)", | |
1748 | ictx->vendor, ictx->product); | |
1749 | touch->name = ictx->name_touch; | |
1750 | ||
1751 | usb_make_path(ictx->usbdev_intf1, ictx->phys_touch, | |
1752 | sizeof(ictx->phys_touch)); | |
1753 | strlcat(ictx->phys_touch, "/input1", sizeof(ictx->phys_touch)); | |
1754 | touch->phys = ictx->phys_touch; | |
1755 | ||
1756 | touch->evbit[0] = | |
1757 | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); | |
1758 | touch->keybit[BIT_WORD(BTN_TOUCH)] = | |
1759 | BIT_MASK(BTN_TOUCH); | |
1760 | input_set_abs_params(touch, ABS_X, | |
1761 | 0x00, 0xfff, 0, 0); | |
1762 | input_set_abs_params(touch, ABS_Y, | |
1763 | 0x00, 0xfff, 0, 0); | |
1764 | ||
1765 | input_set_drvdata(touch, ictx); | |
1766 | ||
1767 | usb_to_input_id(ictx->usbdev_intf1, &touch->id); | |
1768 | touch->dev.parent = ictx->dev; | |
1769 | ret = input_register_device(touch); | |
1770 | if (ret < 0) { | |
1771 | dev_info(ictx->dev, "touchscreen input dev register failed\n"); | |
1772 | goto touch_register_failed; | |
1773 | } | |
1774 | ||
1775 | return touch; | |
1776 | ||
1777 | touch_register_failed: | |
1778 | input_free_device(ictx->touch); | |
1779 | mutex_unlock(&ictx->lock); | |
1780 | ||
1781 | touch_alloc_failed: | |
1782 | return NULL; | |
1783 | } | |
1784 | ||
1785 | static bool imon_find_endpoints(struct imon_context *ictx, | |
1786 | struct usb_host_interface *iface_desc) | |
1787 | { | |
1788 | struct usb_endpoint_descriptor *ep; | |
1789 | struct usb_endpoint_descriptor *rx_endpoint = NULL; | |
1790 | struct usb_endpoint_descriptor *tx_endpoint = NULL; | |
1791 | int ifnum = iface_desc->desc.bInterfaceNumber; | |
1792 | int num_endpts = iface_desc->desc.bNumEndpoints; | |
1793 | int i, ep_dir, ep_type; | |
1794 | bool ir_ep_found = 0; | |
1795 | bool display_ep_found = 0; | |
1796 | bool tx_control = 0; | |
1797 | ||
1798 | /* | |
1799 | * Scan the endpoint list and set: | |
1800 | * first input endpoint = IR endpoint | |
1801 | * first output endpoint = display endpoint | |
1802 | */ | |
1803 | for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) { | |
1804 | ep = &iface_desc->endpoint[i].desc; | |
1805 | ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK; | |
1806 | ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; | |
1807 | ||
1808 | if (!ir_ep_found && ep_dir == USB_DIR_IN && | |
1809 | ep_type == USB_ENDPOINT_XFER_INT) { | |
1810 | ||
1811 | rx_endpoint = ep; | |
1812 | ir_ep_found = 1; | |
1813 | dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__); | |
1814 | ||
1815 | } else if (!display_ep_found && ep_dir == USB_DIR_OUT && | |
1816 | ep_type == USB_ENDPOINT_XFER_INT) { | |
1817 | tx_endpoint = ep; | |
1818 | display_ep_found = 1; | |
1819 | dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__); | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | if (ifnum == 0) { | |
1824 | ictx->rx_endpoint_intf0 = rx_endpoint; | |
1825 | /* | |
1826 | * tx is used to send characters to lcd/vfd, associate RF | |
1827 | * remotes, set IR protocol, and maybe more... | |
1828 | */ | |
1829 | ictx->tx_endpoint = tx_endpoint; | |
1830 | } else { | |
1831 | ictx->rx_endpoint_intf1 = rx_endpoint; | |
1832 | } | |
1833 | ||
1834 | /* | |
1835 | * If we didn't find a display endpoint, this is probably one of the | |
1836 | * newer iMON devices that use control urb instead of interrupt | |
1837 | */ | |
1838 | if (!display_ep_found) { | |
1839 | tx_control = 1; | |
1840 | display_ep_found = 1; | |
1841 | dev_dbg(ictx->dev, "%s: device uses control endpoint, not " | |
1842 | "interface OUT endpoint\n", __func__); | |
1843 | } | |
1844 | ||
1845 | /* | |
1846 | * Some iMON receivers have no display. Unfortunately, it seems | |
1847 | * that SoundGraph recycles device IDs between devices both with | |
1848 | * and without... :\ | |
1849 | */ | |
1850 | if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) { | |
1851 | display_ep_found = 0; | |
1852 | dev_dbg(ictx->dev, "%s: device has no display\n", __func__); | |
1853 | } | |
1854 | ||
1855 | /* | |
1856 | * iMON Touch devices have a VGA touchscreen, but no "display", as | |
1857 | * that refers to e.g. /dev/lcd0 (a character device LCD or VFD). | |
1858 | */ | |
1859 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | |
1860 | display_ep_found = 0; | |
1861 | dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__); | |
1862 | } | |
1863 | ||
1864 | /* Input endpoint is mandatory */ | |
1865 | if (!ir_ep_found) | |
1866 | err("%s: no valid input (IR) endpoint found.", __func__); | |
1867 | ||
1868 | ictx->tx_control = tx_control; | |
1869 | ||
1870 | if (display_ep_found) | |
1871 | ictx->display_supported = true; | |
1872 | ||
1873 | return ir_ep_found; | |
1874 | ||
1875 | } | |
1876 | ||
1877 | static struct imon_context *imon_init_intf0(struct usb_interface *intf) | |
1878 | { | |
1879 | struct imon_context *ictx; | |
1880 | struct urb *rx_urb; | |
1881 | struct urb *tx_urb; | |
1882 | struct device *dev = &intf->dev; | |
1883 | struct usb_host_interface *iface_desc; | |
1f71baef | 1884 | int ret = -ENOMEM; |
21677cfc JW |
1885 | |
1886 | ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL); | |
1887 | if (!ictx) { | |
1888 | dev_err(dev, "%s: kzalloc failed for context", __func__); | |
1889 | goto exit; | |
1890 | } | |
1891 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1892 | if (!rx_urb) { | |
1893 | dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__); | |
1894 | goto rx_urb_alloc_failed; | |
1895 | } | |
1896 | tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1897 | if (!tx_urb) { | |
1898 | dev_err(dev, "%s: usb_alloc_urb failed for display urb", | |
1899 | __func__); | |
1900 | goto tx_urb_alloc_failed; | |
1901 | } | |
1902 | ||
1903 | mutex_init(&ictx->lock); | |
1904 | ||
1905 | mutex_lock(&ictx->lock); | |
1906 | ||
1907 | ictx->dev = dev; | |
1908 | ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf)); | |
1909 | ictx->dev_present_intf0 = 1; | |
1910 | ictx->rx_urb_intf0 = rx_urb; | |
1911 | ictx->tx_urb = tx_urb; | |
1912 | ||
1913 | ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor); | |
1914 | ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct); | |
1915 | ||
1f71baef | 1916 | ret = -ENODEV; |
21677cfc | 1917 | iface_desc = intf->cur_altsetting; |
1f71baef | 1918 | if (!imon_find_endpoints(ictx, iface_desc)) { |
21677cfc | 1919 | goto find_endpoint_failed; |
1f71baef | 1920 | } |
21677cfc JW |
1921 | |
1922 | ictx->idev = imon_init_idev(ictx); | |
1923 | if (!ictx->idev) { | |
1924 | dev_err(dev, "%s: input device setup failed\n", __func__); | |
1925 | goto idev_setup_failed; | |
1926 | } | |
1927 | ||
1928 | usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, | |
1929 | usb_rcvintpipe(ictx->usbdev_intf0, | |
1930 | ictx->rx_endpoint_intf0->bEndpointAddress), | |
1931 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | |
1932 | usb_rx_callback_intf0, ictx, | |
1933 | ictx->rx_endpoint_intf0->bInterval); | |
1934 | ||
1935 | ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL); | |
1936 | if (ret) { | |
1937 | err("%s: usb_submit_urb failed for intf0 (%d)", | |
1938 | __func__, ret); | |
1939 | goto urb_submit_failed; | |
1940 | } | |
1941 | ||
1942 | return ictx; | |
1943 | ||
1944 | urb_submit_failed: | |
1945 | input_unregister_device(ictx->idev); | |
1946 | input_free_device(ictx->idev); | |
1947 | idev_setup_failed: | |
1948 | find_endpoint_failed: | |
1949 | mutex_unlock(&ictx->lock); | |
1950 | usb_free_urb(tx_urb); | |
1951 | tx_urb_alloc_failed: | |
1952 | usb_free_urb(rx_urb); | |
1953 | rx_urb_alloc_failed: | |
1954 | kfree(ictx); | |
1955 | exit: | |
1956 | dev_err(dev, "unable to initialize intf0, err %d\n", ret); | |
1957 | ||
1958 | return NULL; | |
1959 | } | |
1960 | ||
1961 | static struct imon_context *imon_init_intf1(struct usb_interface *intf, | |
1962 | struct imon_context *ictx) | |
1963 | { | |
1964 | struct urb *rx_urb; | |
1965 | struct usb_host_interface *iface_desc; | |
1f71baef | 1966 | int ret = -ENOMEM; |
21677cfc JW |
1967 | |
1968 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1969 | if (!rx_urb) { | |
1970 | err("%s: usb_alloc_urb failed for IR urb", __func__); | |
21677cfc JW |
1971 | goto rx_urb_alloc_failed; |
1972 | } | |
1973 | ||
1974 | mutex_lock(&ictx->lock); | |
1975 | ||
1976 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | |
1977 | init_timer(&ictx->ttimer); | |
1978 | ictx->ttimer.data = (unsigned long)ictx; | |
1979 | ictx->ttimer.function = imon_touch_display_timeout; | |
1980 | } | |
1981 | ||
1982 | ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf)); | |
1983 | ictx->dev_present_intf1 = 1; | |
1984 | ictx->rx_urb_intf1 = rx_urb; | |
1985 | ||
1f71baef | 1986 | ret = -ENODEV; |
21677cfc JW |
1987 | iface_desc = intf->cur_altsetting; |
1988 | if (!imon_find_endpoints(ictx, iface_desc)) | |
1989 | goto find_endpoint_failed; | |
1990 | ||
1991 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | |
1992 | ictx->touch = imon_init_touch(ictx); | |
1993 | if (!ictx->touch) | |
1994 | goto touch_setup_failed; | |
1995 | } else | |
1996 | ictx->touch = NULL; | |
1997 | ||
1998 | usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, | |
1999 | usb_rcvintpipe(ictx->usbdev_intf1, | |
2000 | ictx->rx_endpoint_intf1->bEndpointAddress), | |
2001 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | |
2002 | usb_rx_callback_intf1, ictx, | |
2003 | ictx->rx_endpoint_intf1->bInterval); | |
2004 | ||
2005 | ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL); | |
2006 | ||
2007 | if (ret) { | |
2008 | err("%s: usb_submit_urb failed for intf1 (%d)", | |
2009 | __func__, ret); | |
2010 | goto urb_submit_failed; | |
2011 | } | |
2012 | ||
2013 | return ictx; | |
2014 | ||
2015 | urb_submit_failed: | |
2016 | if (ictx->touch) { | |
2017 | input_unregister_device(ictx->touch); | |
2018 | input_free_device(ictx->touch); | |
2019 | } | |
2020 | touch_setup_failed: | |
2021 | find_endpoint_failed: | |
2022 | mutex_unlock(&ictx->lock); | |
2023 | usb_free_urb(rx_urb); | |
2024 | rx_urb_alloc_failed: | |
2025 | dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret); | |
2026 | ||
2027 | return NULL; | |
2028 | } | |
2029 | ||
2030 | /* | |
2031 | * The 0x15c2:0xffdc device ID was used for umpteen different imon | |
2032 | * devices, and all of them constantly spew interrupts, even when there | |
2033 | * is no actual data to report. However, byte 6 of this buffer looks like | |
2034 | * its unique across device variants, so we're trying to key off that to | |
2035 | * figure out which display type (if any) and what IR protocol the device | |
6718e8ad JW |
2036 | * actually supports. These devices have their IR protocol hard-coded into |
2037 | * their firmware, they can't be changed on the fly like the newer hardware. | |
21677cfc JW |
2038 | */ |
2039 | static void imon_get_ffdc_type(struct imon_context *ictx) | |
2040 | { | |
2041 | u8 ffdc_cfg_byte = ictx->usb_rx_buf[6]; | |
2042 | u8 detected_display_type = IMON_DISPLAY_TYPE_NONE; | |
6718e8ad | 2043 | u64 allowed_protos = IR_TYPE_OTHER; |
21677cfc JW |
2044 | |
2045 | switch (ffdc_cfg_byte) { | |
2046 | /* iMON Knob, no display, iMON IR + vol knob */ | |
2047 | case 0x21: | |
2048 | dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR"); | |
2049 | ictx->display_supported = false; | |
2050 | break; | |
2051 | /* iMON VFD, no IR (does have vol knob tho) */ | |
2052 | case 0x35: | |
2053 | dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR"); | |
2054 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | |
21677cfc JW |
2055 | break; |
2056 | /* iMON VFD, iMON IR */ | |
2057 | case 0x24: | |
2058 | case 0x85: | |
2059 | dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR"); | |
2060 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | |
2061 | break; | |
2062 | /* iMON LCD, MCE IR */ | |
2063 | case 0x9f: | |
2064 | dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR"); | |
2065 | detected_display_type = IMON_DISPLAY_TYPE_LCD; | |
6718e8ad | 2066 | allowed_protos = IR_TYPE_RC6; |
21677cfc JW |
2067 | break; |
2068 | default: | |
2069 | dev_info(ictx->dev, "Unknown 0xffdc device, " | |
2070 | "defaulting to VFD and iMON IR"); | |
2071 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | |
2072 | break; | |
2073 | } | |
2074 | ||
6718e8ad | 2075 | printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte); |
21677cfc JW |
2076 | |
2077 | ictx->display_type = detected_display_type; | |
6718e8ad JW |
2078 | ictx->props->allowed_protos = allowed_protos; |
2079 | ictx->ir_type = allowed_protos; | |
21677cfc JW |
2080 | } |
2081 | ||
2082 | static void imon_set_display_type(struct imon_context *ictx, | |
2083 | struct usb_interface *intf) | |
2084 | { | |
2085 | u8 configured_display_type = IMON_DISPLAY_TYPE_VFD; | |
2086 | ||
2087 | /* | |
2088 | * Try to auto-detect the type of display if the user hasn't set | |
2089 | * it by hand via the display_type modparam. Default is VFD. | |
2090 | */ | |
2091 | ||
2092 | if (display_type == IMON_DISPLAY_TYPE_AUTO) { | |
2093 | switch (ictx->product) { | |
2094 | case 0xffdc: | |
2095 | /* set in imon_get_ffdc_type() */ | |
2096 | configured_display_type = ictx->display_type; | |
2097 | break; | |
2098 | case 0x0034: | |
2099 | case 0x0035: | |
2100 | configured_display_type = IMON_DISPLAY_TYPE_VGA; | |
2101 | break; | |
2102 | case 0x0038: | |
2103 | case 0x0039: | |
2104 | case 0x0045: | |
2105 | configured_display_type = IMON_DISPLAY_TYPE_LCD; | |
2106 | break; | |
2107 | case 0x003c: | |
2108 | case 0x0041: | |
2109 | case 0x0042: | |
2110 | case 0x0043: | |
2111 | configured_display_type = IMON_DISPLAY_TYPE_NONE; | |
2112 | ictx->display_supported = false; | |
2113 | break; | |
2114 | case 0x0036: | |
2115 | case 0x0044: | |
2116 | default: | |
2117 | configured_display_type = IMON_DISPLAY_TYPE_VFD; | |
2118 | break; | |
2119 | } | |
2120 | } else { | |
2121 | configured_display_type = display_type; | |
2122 | if (display_type == IMON_DISPLAY_TYPE_NONE) | |
2123 | ictx->display_supported = false; | |
2124 | else | |
2125 | ictx->display_supported = true; | |
2126 | dev_info(ictx->dev, "%s: overriding display type to %d via " | |
2127 | "modparam\n", __func__, display_type); | |
2128 | } | |
2129 | ||
2130 | ictx->display_type = configured_display_type; | |
2131 | } | |
2132 | ||
2133 | static void imon_init_display(struct imon_context *ictx, | |
2134 | struct usb_interface *intf) | |
2135 | { | |
2136 | int ret; | |
2137 | ||
2138 | dev_dbg(ictx->dev, "Registering iMON display with sysfs\n"); | |
2139 | ||
2140 | /* set up sysfs entry for built-in clock */ | |
2141 | ret = sysfs_create_group(&intf->dev.kobj, | |
2142 | &imon_display_attribute_group); | |
2143 | if (ret) | |
2144 | dev_err(ictx->dev, "Could not create display sysfs " | |
2145 | "entries(%d)", ret); | |
2146 | ||
2147 | if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) | |
2148 | ret = usb_register_dev(intf, &imon_lcd_class); | |
2149 | else | |
2150 | ret = usb_register_dev(intf, &imon_vfd_class); | |
2151 | if (ret) | |
2152 | /* Not a fatal error, so ignore */ | |
2153 | dev_info(ictx->dev, "could not get a minor number for " | |
2154 | "display\n"); | |
2155 | ||
2156 | } | |
2157 | ||
2158 | /** | |
2159 | * Callback function for USB core API: Probe | |
2160 | */ | |
2161 | static int __devinit imon_probe(struct usb_interface *interface, | |
2162 | const struct usb_device_id *id) | |
2163 | { | |
2164 | struct usb_device *usbdev = NULL; | |
2165 | struct usb_host_interface *iface_desc = NULL; | |
2166 | struct usb_interface *first_if; | |
2167 | struct device *dev = &interface->dev; | |
2168 | int ifnum, code_length, sysfs_err; | |
2169 | int ret = 0; | |
2170 | struct imon_context *ictx = NULL; | |
2171 | struct imon_context *first_if_ctx = NULL; | |
2172 | u16 vendor, product; | |
2173 | const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00, | |
2174 | 0x00, 0x00, 0x00, 0x88 }; | |
2175 | ||
2176 | code_length = BUF_CHUNK_SIZE * 8; | |
2177 | ||
2178 | usbdev = usb_get_dev(interface_to_usbdev(interface)); | |
2179 | iface_desc = interface->cur_altsetting; | |
2180 | ifnum = iface_desc->desc.bInterfaceNumber; | |
2181 | vendor = le16_to_cpu(usbdev->descriptor.idVendor); | |
2182 | product = le16_to_cpu(usbdev->descriptor.idProduct); | |
2183 | ||
2184 | dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n", | |
2185 | __func__, vendor, product, ifnum); | |
2186 | ||
2187 | /* prevent races probing devices w/multiple interfaces */ | |
2188 | mutex_lock(&driver_lock); | |
2189 | ||
2190 | first_if = usb_ifnum_to_if(usbdev, 0); | |
2191 | first_if_ctx = (struct imon_context *)usb_get_intfdata(first_if); | |
2192 | ||
2193 | if (ifnum == 0) { | |
2194 | ictx = imon_init_intf0(interface); | |
2195 | if (!ictx) { | |
2196 | err("%s: failed to initialize context!\n", __func__); | |
2197 | ret = -ENODEV; | |
2198 | goto fail; | |
2199 | } | |
2200 | ||
2201 | if (product == 0xffdc) { | |
2202 | /* RF products *also* use 0xffdc... sigh... */ | |
2203 | sysfs_err = sysfs_create_group(&interface->dev.kobj, | |
2204 | &imon_rf_attribute_group); | |
2205 | if (sysfs_err) | |
2206 | err("%s: Could not create RF sysfs entries(%d)", | |
2207 | __func__, sysfs_err); | |
2208 | } | |
2209 | ||
2210 | } else { | |
2211 | /* this is the secondary interface on the device */ | |
2212 | ictx = imon_init_intf1(interface, first_if_ctx); | |
2213 | if (!ictx) { | |
2214 | err("%s: failed to attach to context!\n", __func__); | |
2215 | ret = -ENODEV; | |
2216 | goto fail; | |
2217 | } | |
2218 | ||
2219 | } | |
2220 | ||
2221 | usb_set_intfdata(interface, ictx); | |
2222 | ||
2223 | if (ifnum == 0) { | |
2224 | /* Enable front-panel buttons and/or knobs */ | |
2225 | memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet)); | |
2226 | ret = send_packet(ictx); | |
2227 | /* Not fatal, but warn about it */ | |
2228 | if (ret) | |
2229 | dev_info(dev, "failed to enable panel buttons " | |
2230 | "and/or knobs\n"); | |
2231 | ||
2232 | if (product == 0xffdc) | |
2233 | imon_get_ffdc_type(ictx); | |
21677cfc JW |
2234 | |
2235 | imon_set_display_type(ictx, interface); | |
2236 | ||
2237 | if (ictx->display_supported) | |
2238 | imon_init_display(ictx, interface); | |
2239 | } | |
2240 | ||
2241 | /* set IR protocol/remote type */ | |
6718e8ad JW |
2242 | ret = imon_ir_change_protocol(ictx, ictx->ir_type); |
2243 | if (ret) { | |
2244 | dev_warn(dev, "%s: failed to set IR protocol, falling back " | |
2245 | "to standard iMON protocol mode\n", __func__); | |
2246 | ictx->ir_type = IR_TYPE_OTHER; | |
2247 | } | |
21677cfc JW |
2248 | |
2249 | dev_info(dev, "iMON device (%04x:%04x, intf%d) on " | |
2250 | "usb<%d:%d> initialized\n", vendor, product, ifnum, | |
2251 | usbdev->bus->busnum, usbdev->devnum); | |
2252 | ||
2253 | mutex_unlock(&ictx->lock); | |
2254 | mutex_unlock(&driver_lock); | |
2255 | ||
2256 | return 0; | |
2257 | ||
2258 | fail: | |
2259 | mutex_unlock(&driver_lock); | |
2260 | dev_err(dev, "unable to register, err %d\n", ret); | |
2261 | ||
2262 | return ret; | |
2263 | } | |
2264 | ||
2265 | /** | |
2266 | * Callback function for USB core API: disconnect | |
2267 | */ | |
2268 | static void __devexit imon_disconnect(struct usb_interface *interface) | |
2269 | { | |
2270 | struct imon_context *ictx; | |
2271 | struct device *dev; | |
2272 | int ifnum; | |
2273 | ||
2274 | /* prevent races with multi-interface device probing and display_open */ | |
2275 | mutex_lock(&driver_lock); | |
2276 | ||
2277 | ictx = usb_get_intfdata(interface); | |
2278 | dev = ictx->dev; | |
2279 | ifnum = interface->cur_altsetting->desc.bInterfaceNumber; | |
2280 | ||
2281 | mutex_lock(&ictx->lock); | |
2282 | ||
2283 | /* | |
2284 | * sysfs_remove_group is safe to call even if sysfs_create_group | |
2285 | * hasn't been called | |
2286 | */ | |
2287 | sysfs_remove_group(&interface->dev.kobj, | |
2288 | &imon_display_attribute_group); | |
2289 | sysfs_remove_group(&interface->dev.kobj, | |
2290 | &imon_rf_attribute_group); | |
2291 | ||
2292 | usb_set_intfdata(interface, NULL); | |
2293 | ||
2294 | /* Abort ongoing write */ | |
2295 | if (ictx->tx.busy) { | |
2296 | usb_kill_urb(ictx->tx_urb); | |
2297 | complete_all(&ictx->tx.finished); | |
2298 | } | |
2299 | ||
2300 | if (ifnum == 0) { | |
2301 | ictx->dev_present_intf0 = 0; | |
2302 | usb_kill_urb(ictx->rx_urb_intf0); | |
2303 | input_unregister_device(ictx->idev); | |
2304 | if (ictx->display_supported) { | |
2305 | if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) | |
2306 | usb_deregister_dev(interface, &imon_lcd_class); | |
2307 | else | |
2308 | usb_deregister_dev(interface, &imon_vfd_class); | |
2309 | } | |
2310 | } else { | |
2311 | ictx->dev_present_intf1 = 0; | |
2312 | usb_kill_urb(ictx->rx_urb_intf1); | |
2313 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) | |
2314 | input_unregister_device(ictx->touch); | |
2315 | } | |
2316 | ||
2317 | if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) { | |
2318 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) | |
2319 | del_timer_sync(&ictx->ttimer); | |
2320 | mutex_unlock(&ictx->lock); | |
2321 | if (!ictx->display_isopen) | |
2322 | free_imon_context(ictx); | |
2323 | } else { | |
6718e8ad | 2324 | if (ictx->ir_type == IR_TYPE_RC6) |
21677cfc JW |
2325 | del_timer_sync(&ictx->itimer); |
2326 | mutex_unlock(&ictx->lock); | |
2327 | } | |
2328 | ||
2329 | mutex_unlock(&driver_lock); | |
2330 | ||
2331 | dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n", | |
2332 | __func__, ifnum); | |
2333 | } | |
2334 | ||
2335 | static int imon_suspend(struct usb_interface *intf, pm_message_t message) | |
2336 | { | |
2337 | struct imon_context *ictx = usb_get_intfdata(intf); | |
2338 | int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
2339 | ||
2340 | if (ifnum == 0) | |
2341 | usb_kill_urb(ictx->rx_urb_intf0); | |
2342 | else | |
2343 | usb_kill_urb(ictx->rx_urb_intf1); | |
2344 | ||
2345 | return 0; | |
2346 | } | |
2347 | ||
2348 | static int imon_resume(struct usb_interface *intf) | |
2349 | { | |
2350 | int rc = 0; | |
2351 | struct imon_context *ictx = usb_get_intfdata(intf); | |
2352 | int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
2353 | ||
2354 | if (ifnum == 0) { | |
2355 | usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, | |
2356 | usb_rcvintpipe(ictx->usbdev_intf0, | |
2357 | ictx->rx_endpoint_intf0->bEndpointAddress), | |
2358 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | |
2359 | usb_rx_callback_intf0, ictx, | |
2360 | ictx->rx_endpoint_intf0->bInterval); | |
2361 | ||
2362 | rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); | |
2363 | ||
2364 | } else { | |
2365 | usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, | |
2366 | usb_rcvintpipe(ictx->usbdev_intf1, | |
2367 | ictx->rx_endpoint_intf1->bEndpointAddress), | |
2368 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | |
2369 | usb_rx_callback_intf1, ictx, | |
2370 | ictx->rx_endpoint_intf1->bInterval); | |
2371 | ||
2372 | rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); | |
2373 | } | |
2374 | ||
2375 | return rc; | |
2376 | } | |
2377 | ||
2378 | static int __init imon_init(void) | |
2379 | { | |
2380 | int rc; | |
2381 | ||
2382 | rc = usb_register(&imon_driver); | |
2383 | if (rc) { | |
2384 | err("%s: usb register failed(%d)", __func__, rc); | |
2385 | rc = -ENODEV; | |
2386 | } | |
2387 | ||
2388 | return rc; | |
2389 | } | |
2390 | ||
2391 | static void __exit imon_exit(void) | |
2392 | { | |
2393 | usb_deregister(&imon_driver); | |
2394 | } | |
2395 | ||
2396 | module_init(imon_init); | |
2397 | module_exit(imon_exit); |