diff options
Diffstat (limited to 'drivers/media/rc/imon.c')
-rw-r--r-- | drivers/media/rc/imon.c | 2457 |
1 files changed, 2457 insertions, 0 deletions
diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c new file mode 100644 index 000000000000..6811512b4e83 --- /dev/null +++ b/drivers/media/rc/imon.c | |||
@@ -0,0 +1,2457 @@ | |||
1 | /* | ||
2 | * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD | ||
3 | * | ||
4 | * Copyright(C) 2010 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 | #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ | ||
30 | |||
31 | #include <linux/errno.h> | ||
32 | #include <linux/init.h> | ||
33 | #include <linux/kernel.h> | ||
34 | #include <linux/module.h> | ||
35 | #include <linux/slab.h> | ||
36 | #include <linux/uaccess.h> | ||
37 | |||
38 | #include <linux/input.h> | ||
39 | #include <linux/usb.h> | ||
40 | #include <linux/usb/input.h> | ||
41 | #include <media/rc-core.h> | ||
42 | |||
43 | #include <linux/time.h> | ||
44 | #include <linux/timer.h> | ||
45 | |||
46 | #define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>" | ||
47 | #define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display" | ||
48 | #define MOD_NAME "imon" | ||
49 | #define MOD_VERSION "0.9.2" | ||
50 | |||
51 | #define DISPLAY_MINOR_BASE 144 | ||
52 | #define DEVICE_NAME "lcd%d" | ||
53 | |||
54 | #define BUF_CHUNK_SIZE 8 | ||
55 | #define BUF_SIZE 128 | ||
56 | |||
57 | #define BIT_DURATION 250 /* each bit received is 250us */ | ||
58 | |||
59 | #define IMON_CLOCK_ENABLE_PACKETS 2 | ||
60 | |||
61 | /*** P R O T O T Y P E S ***/ | ||
62 | |||
63 | /* USB Callback prototypes */ | ||
64 | static int imon_probe(struct usb_interface *interface, | ||
65 | const struct usb_device_id *id); | ||
66 | static void imon_disconnect(struct usb_interface *interface); | ||
67 | static void usb_rx_callback_intf0(struct urb *urb); | ||
68 | static void usb_rx_callback_intf1(struct urb *urb); | ||
69 | static void usb_tx_callback(struct urb *urb); | ||
70 | |||
71 | /* suspend/resume support */ | ||
72 | static int imon_resume(struct usb_interface *intf); | ||
73 | static int imon_suspend(struct usb_interface *intf, pm_message_t message); | ||
74 | |||
75 | /* Display file_operations function prototypes */ | ||
76 | static int display_open(struct inode *inode, struct file *file); | ||
77 | static int display_close(struct inode *inode, struct file *file); | ||
78 | |||
79 | /* VFD write operation */ | ||
80 | static ssize_t vfd_write(struct file *file, const char *buf, | ||
81 | size_t n_bytes, loff_t *pos); | ||
82 | |||
83 | /* LCD file_operations override function prototypes */ | ||
84 | static ssize_t lcd_write(struct file *file, const char *buf, | ||
85 | size_t n_bytes, loff_t *pos); | ||
86 | |||
87 | /*** G L O B A L S ***/ | ||
88 | |||
89 | struct imon_context { | ||
90 | struct device *dev; | ||
91 | /* Newer devices have two interfaces */ | ||
92 | struct usb_device *usbdev_intf0; | ||
93 | struct usb_device *usbdev_intf1; | ||
94 | |||
95 | bool display_supported; /* not all controllers do */ | ||
96 | bool display_isopen; /* display port has been opened */ | ||
97 | bool rf_device; /* true if iMON 2.4G LT/DT RF device */ | ||
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 rc_dev *rdev; /* rc-core device for remote */ | ||
126 | struct input_dev *idev; /* input device for panel & IR mouse */ | ||
127 | struct input_dev *touch; /* input device for touchscreen */ | ||
128 | |||
129 | spinlock_t kc_lock; /* make sure we get keycodes right */ | ||
130 | u32 kc; /* current input keycode */ | ||
131 | u32 last_keycode; /* last reported input keycode */ | ||
132 | u32 rc_scancode; /* the computed remote scancode */ | ||
133 | u8 rc_toggle; /* the computed remote toggle bit */ | ||
134 | u64 rc_type; /* iMON or MCE (RC6) IR protocol? */ | ||
135 | bool release_code; /* some keys send a release code */ | ||
136 | |||
137 | u8 display_type; /* store the display type */ | ||
138 | bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */ | ||
139 | |||
140 | char name_rdev[128]; /* rc input device name */ | ||
141 | char phys_rdev[64]; /* rc input device phys path */ | ||
142 | |||
143 | char name_idev[128]; /* input device name */ | ||
144 | char phys_idev[64]; /* input device phys path */ | ||
145 | |||
146 | char name_touch[128]; /* touch screen name */ | ||
147 | char phys_touch[64]; /* touch screen phys path */ | ||
148 | struct timer_list ttimer; /* touch screen timer */ | ||
149 | int touch_x; /* x coordinate on touchscreen */ | ||
150 | int touch_y; /* y coordinate on touchscreen */ | ||
151 | }; | ||
152 | |||
153 | #define TOUCH_TIMEOUT (HZ/30) | ||
154 | |||
155 | /* vfd character device file operations */ | ||
156 | static const struct file_operations vfd_fops = { | ||
157 | .owner = THIS_MODULE, | ||
158 | .open = &display_open, | ||
159 | .write = &vfd_write, | ||
160 | .release = &display_close, | ||
161 | .llseek = noop_llseek, | ||
162 | }; | ||
163 | |||
164 | /* lcd character device file operations */ | ||
165 | static const struct file_operations lcd_fops = { | ||
166 | .owner = THIS_MODULE, | ||
167 | .open = &display_open, | ||
168 | .write = &lcd_write, | ||
169 | .release = &display_close, | ||
170 | .llseek = noop_llseek, | ||
171 | }; | ||
172 | |||
173 | enum { | ||
174 | IMON_DISPLAY_TYPE_AUTO = 0, | ||
175 | IMON_DISPLAY_TYPE_VFD = 1, | ||
176 | IMON_DISPLAY_TYPE_LCD = 2, | ||
177 | IMON_DISPLAY_TYPE_VGA = 3, | ||
178 | IMON_DISPLAY_TYPE_NONE = 4, | ||
179 | }; | ||
180 | |||
181 | enum { | ||
182 | IMON_KEY_IMON = 0, | ||
183 | IMON_KEY_MCE = 1, | ||
184 | IMON_KEY_PANEL = 2, | ||
185 | }; | ||
186 | |||
187 | /* | ||
188 | * USB Device ID for iMON USB Control Boards | ||
189 | * | ||
190 | * The Windows drivers contain 6 different inf files, more or less one for | ||
191 | * each new device until the 0x0034-0x0046 devices, which all use the same | ||
192 | * driver. Some of the devices in the 34-46 range haven't been definitively | ||
193 | * identified yet. Early devices have either a TriGem Computer, Inc. or a | ||
194 | * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later | ||
195 | * devices use the SoundGraph vendor ID (0x15c2). This driver only supports | ||
196 | * the ffdc and later devices, which do onboard decoding. | ||
197 | */ | ||
198 | static struct usb_device_id imon_usb_id_table[] = { | ||
199 | /* | ||
200 | * Several devices with this same device ID, all use iMON_PAD.inf | ||
201 | * SoundGraph iMON PAD (IR & VFD) | ||
202 | * SoundGraph iMON PAD (IR & LCD) | ||
203 | * SoundGraph iMON Knob (IR only) | ||
204 | */ | ||
205 | { USB_DEVICE(0x15c2, 0xffdc) }, | ||
206 | |||
207 | /* | ||
208 | * Newer devices, all driven by the latest iMON Windows driver, full | ||
209 | * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2' | ||
210 | * Need user input to fill in details on unknown devices. | ||
211 | */ | ||
212 | /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */ | ||
213 | { USB_DEVICE(0x15c2, 0x0034) }, | ||
214 | /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */ | ||
215 | { USB_DEVICE(0x15c2, 0x0035) }, | ||
216 | /* SoundGraph iMON OEM VFD (IR & VFD) */ | ||
217 | { USB_DEVICE(0x15c2, 0x0036) }, | ||
218 | /* device specifics unknown */ | ||
219 | { USB_DEVICE(0x15c2, 0x0037) }, | ||
220 | /* SoundGraph iMON OEM LCD (IR & LCD) */ | ||
221 | { USB_DEVICE(0x15c2, 0x0038) }, | ||
222 | /* SoundGraph iMON UltraBay (IR & LCD) */ | ||
223 | { USB_DEVICE(0x15c2, 0x0039) }, | ||
224 | /* device specifics unknown */ | ||
225 | { USB_DEVICE(0x15c2, 0x003a) }, | ||
226 | /* device specifics unknown */ | ||
227 | { USB_DEVICE(0x15c2, 0x003b) }, | ||
228 | /* SoundGraph iMON OEM Inside (IR only) */ | ||
229 | { USB_DEVICE(0x15c2, 0x003c) }, | ||
230 | /* device specifics unknown */ | ||
231 | { USB_DEVICE(0x15c2, 0x003d) }, | ||
232 | /* device specifics unknown */ | ||
233 | { USB_DEVICE(0x15c2, 0x003e) }, | ||
234 | /* device specifics unknown */ | ||
235 | { USB_DEVICE(0x15c2, 0x003f) }, | ||
236 | /* device specifics unknown */ | ||
237 | { USB_DEVICE(0x15c2, 0x0040) }, | ||
238 | /* SoundGraph iMON MINI (IR only) */ | ||
239 | { USB_DEVICE(0x15c2, 0x0041) }, | ||
240 | /* Antec Veris Multimedia Station EZ External (IR only) */ | ||
241 | { USB_DEVICE(0x15c2, 0x0042) }, | ||
242 | /* Antec Veris Multimedia Station Basic Internal (IR only) */ | ||
243 | { USB_DEVICE(0x15c2, 0x0043) }, | ||
244 | /* Antec Veris Multimedia Station Elite (IR & VFD) */ | ||
245 | { USB_DEVICE(0x15c2, 0x0044) }, | ||
246 | /* Antec Veris Multimedia Station Premiere (IR & LCD) */ | ||
247 | { USB_DEVICE(0x15c2, 0x0045) }, | ||
248 | /* device specifics unknown */ | ||
249 | { USB_DEVICE(0x15c2, 0x0046) }, | ||
250 | {} | ||
251 | }; | ||
252 | |||
253 | /* USB Device data */ | ||
254 | static struct usb_driver imon_driver = { | ||
255 | .name = MOD_NAME, | ||
256 | .probe = imon_probe, | ||
257 | .disconnect = imon_disconnect, | ||
258 | .suspend = imon_suspend, | ||
259 | .resume = imon_resume, | ||
260 | .id_table = imon_usb_id_table, | ||
261 | }; | ||
262 | |||
263 | static struct usb_class_driver imon_vfd_class = { | ||
264 | .name = DEVICE_NAME, | ||
265 | .fops = &vfd_fops, | ||
266 | .minor_base = DISPLAY_MINOR_BASE, | ||
267 | }; | ||
268 | |||
269 | static struct usb_class_driver imon_lcd_class = { | ||
270 | .name = DEVICE_NAME, | ||
271 | .fops = &lcd_fops, | ||
272 | .minor_base = DISPLAY_MINOR_BASE, | ||
273 | }; | ||
274 | |||
275 | /* imon receiver front panel/knob key table */ | ||
276 | static const struct { | ||
277 | u64 hw_code; | ||
278 | u32 keycode; | ||
279 | } imon_panel_key_table[] = { | ||
280 | { 0x000000000f00ffeell, KEY_PROG1 }, /* Go */ | ||
281 | { 0x000000001f00ffeell, KEY_AUDIO }, | ||
282 | { 0x000000002000ffeell, KEY_VIDEO }, | ||
283 | { 0x000000002100ffeell, KEY_CAMERA }, | ||
284 | { 0x000000002700ffeell, KEY_DVD }, | ||
285 | { 0x000000002300ffeell, KEY_TV }, | ||
286 | { 0x000000000500ffeell, KEY_PREVIOUS }, | ||
287 | { 0x000000000700ffeell, KEY_REWIND }, | ||
288 | { 0x000000000400ffeell, KEY_STOP }, | ||
289 | { 0x000000003c00ffeell, KEY_PLAYPAUSE }, | ||
290 | { 0x000000000800ffeell, KEY_FASTFORWARD }, | ||
291 | { 0x000000000600ffeell, KEY_NEXT }, | ||
292 | { 0x000000010000ffeell, KEY_RIGHT }, | ||
293 | { 0x000001000000ffeell, KEY_LEFT }, | ||
294 | { 0x000000003d00ffeell, KEY_SELECT }, | ||
295 | { 0x000100000000ffeell, KEY_VOLUMEUP }, | ||
296 | { 0x010000000000ffeell, KEY_VOLUMEDOWN }, | ||
297 | { 0x000000000100ffeell, KEY_MUTE }, | ||
298 | /* 0xffdc iMON MCE VFD */ | ||
299 | { 0x00010000ffffffeell, KEY_VOLUMEUP }, | ||
300 | { 0x01000000ffffffeell, KEY_VOLUMEDOWN }, | ||
301 | /* iMON Knob values */ | ||
302 | { 0x000100ffffffffeell, KEY_VOLUMEUP }, | ||
303 | { 0x010000ffffffffeell, KEY_VOLUMEDOWN }, | ||
304 | { 0x000008ffffffffeell, KEY_MUTE }, | ||
305 | }; | ||
306 | |||
307 | /* to prevent races between open() and disconnect(), probing, etc */ | ||
308 | static DEFINE_MUTEX(driver_lock); | ||
309 | |||
310 | /* Module bookkeeping bits */ | ||
311 | MODULE_AUTHOR(MOD_AUTHOR); | ||
312 | MODULE_DESCRIPTION(MOD_DESC); | ||
313 | MODULE_VERSION(MOD_VERSION); | ||
314 | MODULE_LICENSE("GPL"); | ||
315 | MODULE_DEVICE_TABLE(usb, imon_usb_id_table); | ||
316 | |||
317 | static bool debug; | ||
318 | module_param(debug, bool, S_IRUGO | S_IWUSR); | ||
319 | MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes (default: no)"); | ||
320 | |||
321 | /* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */ | ||
322 | static int display_type; | ||
323 | module_param(display_type, int, S_IRUGO); | ||
324 | MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, " | ||
325 | "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)"); | ||
326 | |||
327 | static int pad_stabilize = 1; | ||
328 | module_param(pad_stabilize, int, S_IRUGO | S_IWUSR); | ||
329 | MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD " | ||
330 | "presses in arrow key mode. 0=disable, 1=enable (default)."); | ||
331 | |||
332 | /* | ||
333 | * In certain use cases, mouse mode isn't really helpful, and could actually | ||
334 | * cause confusion, so allow disabling it when the IR device is open. | ||
335 | */ | ||
336 | static bool nomouse; | ||
337 | module_param(nomouse, bool, S_IRUGO | S_IWUSR); | ||
338 | MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is " | ||
339 | "open. 0=don't disable, 1=disable. (default: don't disable)"); | ||
340 | |||
341 | /* threshold at which a pad push registers as an arrow key in kbd mode */ | ||
342 | static int pad_thresh; | ||
343 | module_param(pad_thresh, int, S_IRUGO | S_IWUSR); | ||
344 | MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an " | ||
345 | "arrow key in kbd mode (default: 28)"); | ||
346 | |||
347 | |||
348 | static void free_imon_context(struct imon_context *ictx) | ||
349 | { | ||
350 | struct device *dev = ictx->dev; | ||
351 | |||
352 | usb_free_urb(ictx->tx_urb); | ||
353 | usb_free_urb(ictx->rx_urb_intf0); | ||
354 | usb_free_urb(ictx->rx_urb_intf1); | ||
355 | kfree(ictx); | ||
356 | |||
357 | dev_dbg(dev, "%s: iMON context freed\n", __func__); | ||
358 | } | ||
359 | |||
360 | /** | ||
361 | * Called when the Display device (e.g. /dev/lcd0) | ||
362 | * is opened by the application. | ||
363 | */ | ||
364 | static int display_open(struct inode *inode, struct file *file) | ||
365 | { | ||
366 | struct usb_interface *interface; | ||
367 | struct imon_context *ictx = NULL; | ||
368 | int subminor; | ||
369 | int retval = 0; | ||
370 | |||
371 | /* prevent races with disconnect */ | ||
372 | mutex_lock(&driver_lock); | ||
373 | |||
374 | subminor = iminor(inode); | ||
375 | interface = usb_find_interface(&imon_driver, subminor); | ||
376 | if (!interface) { | ||
377 | pr_err("could not find interface for minor %d\n", subminor); | ||
378 | retval = -ENODEV; | ||
379 | goto exit; | ||
380 | } | ||
381 | ictx = usb_get_intfdata(interface); | ||
382 | |||
383 | if (!ictx) { | ||
384 | pr_err("no context found for minor %d\n", subminor); | ||
385 | retval = -ENODEV; | ||
386 | goto exit; | ||
387 | } | ||
388 | |||
389 | mutex_lock(&ictx->lock); | ||
390 | |||
391 | if (!ictx->display_supported) { | ||
392 | pr_err("display not supported by device\n"); | ||
393 | retval = -ENODEV; | ||
394 | } else if (ictx->display_isopen) { | ||
395 | pr_err("display port is already open\n"); | ||
396 | retval = -EBUSY; | ||
397 | } else { | ||
398 | ictx->display_isopen = true; | ||
399 | file->private_data = ictx; | ||
400 | dev_dbg(ictx->dev, "display port opened\n"); | ||
401 | } | ||
402 | |||
403 | mutex_unlock(&ictx->lock); | ||
404 | |||
405 | exit: | ||
406 | mutex_unlock(&driver_lock); | ||
407 | return retval; | ||
408 | } | ||
409 | |||
410 | /** | ||
411 | * Called when the display device (e.g. /dev/lcd0) | ||
412 | * is closed by the application. | ||
413 | */ | ||
414 | static int display_close(struct inode *inode, struct file *file) | ||
415 | { | ||
416 | struct imon_context *ictx = NULL; | ||
417 | int retval = 0; | ||
418 | |||
419 | ictx = file->private_data; | ||
420 | |||
421 | if (!ictx) { | ||
422 | pr_err("no context for device\n"); | ||
423 | return -ENODEV; | ||
424 | } | ||
425 | |||
426 | mutex_lock(&ictx->lock); | ||
427 | |||
428 | if (!ictx->display_supported) { | ||
429 | pr_err("display not supported by device\n"); | ||
430 | retval = -ENODEV; | ||
431 | } else if (!ictx->display_isopen) { | ||
432 | pr_err("display is not open\n"); | ||
433 | retval = -EIO; | ||
434 | } else { | ||
435 | ictx->display_isopen = false; | ||
436 | dev_dbg(ictx->dev, "display port closed\n"); | ||
437 | if (!ictx->dev_present_intf0) { | ||
438 | /* | ||
439 | * Device disconnected before close and IR port is not | ||
440 | * open. If IR port is open, context will be deleted by | ||
441 | * ir_close. | ||
442 | */ | ||
443 | mutex_unlock(&ictx->lock); | ||
444 | free_imon_context(ictx); | ||
445 | return retval; | ||
446 | } | ||
447 | } | ||
448 | |||
449 | mutex_unlock(&ictx->lock); | ||
450 | return retval; | ||
451 | } | ||
452 | |||
453 | /** | ||
454 | * Sends a packet to the device -- this function must be called | ||
455 | * with ictx->lock held. | ||
456 | */ | ||
457 | static int send_packet(struct imon_context *ictx) | ||
458 | { | ||
459 | unsigned int pipe; | ||
460 | unsigned long timeout; | ||
461 | int interval = 0; | ||
462 | int retval = 0; | ||
463 | struct usb_ctrlrequest *control_req = NULL; | ||
464 | |||
465 | /* Check if we need to use control or interrupt urb */ | ||
466 | if (!ictx->tx_control) { | ||
467 | pipe = usb_sndintpipe(ictx->usbdev_intf0, | ||
468 | ictx->tx_endpoint->bEndpointAddress); | ||
469 | interval = ictx->tx_endpoint->bInterval; | ||
470 | |||
471 | usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe, | ||
472 | ictx->usb_tx_buf, | ||
473 | sizeof(ictx->usb_tx_buf), | ||
474 | usb_tx_callback, ictx, interval); | ||
475 | |||
476 | ictx->tx_urb->actual_length = 0; | ||
477 | } else { | ||
478 | /* fill request into kmalloc'ed space: */ | ||
479 | control_req = kmalloc(sizeof(struct usb_ctrlrequest), | ||
480 | GFP_KERNEL); | ||
481 | if (control_req == NULL) | ||
482 | return -ENOMEM; | ||
483 | |||
484 | /* setup packet is '21 09 0200 0001 0008' */ | ||
485 | control_req->bRequestType = 0x21; | ||
486 | control_req->bRequest = 0x09; | ||
487 | control_req->wValue = cpu_to_le16(0x0200); | ||
488 | control_req->wIndex = cpu_to_le16(0x0001); | ||
489 | control_req->wLength = cpu_to_le16(0x0008); | ||
490 | |||
491 | /* control pipe is endpoint 0x00 */ | ||
492 | pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0); | ||
493 | |||
494 | /* build the control urb */ | ||
495 | usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0, | ||
496 | pipe, (unsigned char *)control_req, | ||
497 | ictx->usb_tx_buf, | ||
498 | sizeof(ictx->usb_tx_buf), | ||
499 | usb_tx_callback, ictx); | ||
500 | ictx->tx_urb->actual_length = 0; | ||
501 | } | ||
502 | |||
503 | init_completion(&ictx->tx.finished); | ||
504 | ictx->tx.busy = true; | ||
505 | smp_rmb(); /* ensure later readers know we're busy */ | ||
506 | |||
507 | retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL); | ||
508 | if (retval) { | ||
509 | ictx->tx.busy = false; | ||
510 | smp_rmb(); /* ensure later readers know we're not busy */ | ||
511 | pr_err("error submitting urb(%d)\n", retval); | ||
512 | } else { | ||
513 | /* Wait for transmission to complete (or abort) */ | ||
514 | mutex_unlock(&ictx->lock); | ||
515 | retval = wait_for_completion_interruptible( | ||
516 | &ictx->tx.finished); | ||
517 | if (retval) | ||
518 | pr_err("task interrupted\n"); | ||
519 | mutex_lock(&ictx->lock); | ||
520 | |||
521 | retval = ictx->tx.status; | ||
522 | if (retval) | ||
523 | pr_err("packet tx failed (%d)\n", retval); | ||
524 | } | ||
525 | |||
526 | kfree(control_req); | ||
527 | |||
528 | /* | ||
529 | * Induce a mandatory 5ms delay before returning, as otherwise, | ||
530 | * send_packet can get called so rapidly as to overwhelm the device, | ||
531 | * particularly on faster systems and/or those with quirky usb. | ||
532 | */ | ||
533 | timeout = msecs_to_jiffies(5); | ||
534 | set_current_state(TASK_UNINTERRUPTIBLE); | ||
535 | schedule_timeout(timeout); | ||
536 | |||
537 | return retval; | ||
538 | } | ||
539 | |||
540 | /** | ||
541 | * Sends an associate packet to the iMON 2.4G. | ||
542 | * | ||
543 | * This might not be such a good idea, since it has an id collision with | ||
544 | * some versions of the "IR & VFD" combo. The only way to determine if it | ||
545 | * is an RF version is to look at the product description string. (Which | ||
546 | * we currently do not fetch). | ||
547 | */ | ||
548 | static int send_associate_24g(struct imon_context *ictx) | ||
549 | { | ||
550 | int retval; | ||
551 | const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00, | ||
552 | 0x00, 0x00, 0x00, 0x20 }; | ||
553 | |||
554 | if (!ictx) { | ||
555 | pr_err("no context for device\n"); | ||
556 | return -ENODEV; | ||
557 | } | ||
558 | |||
559 | if (!ictx->dev_present_intf0) { | ||
560 | pr_err("no iMON device present\n"); | ||
561 | return -ENODEV; | ||
562 | } | ||
563 | |||
564 | memcpy(ictx->usb_tx_buf, packet, sizeof(packet)); | ||
565 | retval = send_packet(ictx); | ||
566 | |||
567 | return retval; | ||
568 | } | ||
569 | |||
570 | /** | ||
571 | * Sends packets to setup and show clock on iMON display | ||
572 | * | ||
573 | * Arguments: year - last 2 digits of year, month - 1..12, | ||
574 | * day - 1..31, dow - day of the week (0-Sun...6-Sat), | ||
575 | * hour - 0..23, minute - 0..59, second - 0..59 | ||
576 | */ | ||
577 | static int send_set_imon_clock(struct imon_context *ictx, | ||
578 | unsigned int year, unsigned int month, | ||
579 | unsigned int day, unsigned int dow, | ||
580 | unsigned int hour, unsigned int minute, | ||
581 | unsigned int second) | ||
582 | { | ||
583 | unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8]; | ||
584 | int retval = 0; | ||
585 | int i; | ||
586 | |||
587 | if (!ictx) { | ||
588 | pr_err("no context for device\n"); | ||
589 | return -ENODEV; | ||
590 | } | ||
591 | |||
592 | switch (ictx->display_type) { | ||
593 | case IMON_DISPLAY_TYPE_LCD: | ||
594 | clock_enable_pkt[0][0] = 0x80; | ||
595 | clock_enable_pkt[0][1] = year; | ||
596 | clock_enable_pkt[0][2] = month-1; | ||
597 | clock_enable_pkt[0][3] = day; | ||
598 | clock_enable_pkt[0][4] = hour; | ||
599 | clock_enable_pkt[0][5] = minute; | ||
600 | clock_enable_pkt[0][6] = second; | ||
601 | |||
602 | clock_enable_pkt[1][0] = 0x80; | ||
603 | clock_enable_pkt[1][1] = 0; | ||
604 | clock_enable_pkt[1][2] = 0; | ||
605 | clock_enable_pkt[1][3] = 0; | ||
606 | clock_enable_pkt[1][4] = 0; | ||
607 | clock_enable_pkt[1][5] = 0; | ||
608 | clock_enable_pkt[1][6] = 0; | ||
609 | |||
610 | if (ictx->product == 0xffdc) { | ||
611 | clock_enable_pkt[0][7] = 0x50; | ||
612 | clock_enable_pkt[1][7] = 0x51; | ||
613 | } else { | ||
614 | clock_enable_pkt[0][7] = 0x88; | ||
615 | clock_enable_pkt[1][7] = 0x8a; | ||
616 | } | ||
617 | |||
618 | break; | ||
619 | |||
620 | case IMON_DISPLAY_TYPE_VFD: | ||
621 | clock_enable_pkt[0][0] = year; | ||
622 | clock_enable_pkt[0][1] = month-1; | ||
623 | clock_enable_pkt[0][2] = day; | ||
624 | clock_enable_pkt[0][3] = dow; | ||
625 | clock_enable_pkt[0][4] = hour; | ||
626 | clock_enable_pkt[0][5] = minute; | ||
627 | clock_enable_pkt[0][6] = second; | ||
628 | clock_enable_pkt[0][7] = 0x40; | ||
629 | |||
630 | clock_enable_pkt[1][0] = 0; | ||
631 | clock_enable_pkt[1][1] = 0; | ||
632 | clock_enable_pkt[1][2] = 1; | ||
633 | clock_enable_pkt[1][3] = 0; | ||
634 | clock_enable_pkt[1][4] = 0; | ||
635 | clock_enable_pkt[1][5] = 0; | ||
636 | clock_enable_pkt[1][6] = 0; | ||
637 | clock_enable_pkt[1][7] = 0x42; | ||
638 | |||
639 | break; | ||
640 | |||
641 | default: | ||
642 | return -ENODEV; | ||
643 | } | ||
644 | |||
645 | for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) { | ||
646 | memcpy(ictx->usb_tx_buf, clock_enable_pkt[i], 8); | ||
647 | retval = send_packet(ictx); | ||
648 | if (retval) { | ||
649 | pr_err("send_packet failed for packet %d\n", i); | ||
650 | break; | ||
651 | } | ||
652 | } | ||
653 | |||
654 | return retval; | ||
655 | } | ||
656 | |||
657 | /** | ||
658 | * These are the sysfs functions to handle the association on the iMON 2.4G LT. | ||
659 | */ | ||
660 | static ssize_t show_associate_remote(struct device *d, | ||
661 | struct device_attribute *attr, | ||
662 | char *buf) | ||
663 | { | ||
664 | struct imon_context *ictx = dev_get_drvdata(d); | ||
665 | |||
666 | if (!ictx) | ||
667 | return -ENODEV; | ||
668 | |||
669 | mutex_lock(&ictx->lock); | ||
670 | if (ictx->rf_isassociating) | ||
671 | strcpy(buf, "associating\n"); | ||
672 | else | ||
673 | strcpy(buf, "closed\n"); | ||
674 | |||
675 | dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for " | ||
676 | "instructions on how to associate your iMON 2.4G DT/LT " | ||
677 | "remote\n"); | ||
678 | mutex_unlock(&ictx->lock); | ||
679 | return strlen(buf); | ||
680 | } | ||
681 | |||
682 | static ssize_t store_associate_remote(struct device *d, | ||
683 | struct device_attribute *attr, | ||
684 | const char *buf, size_t count) | ||
685 | { | ||
686 | struct imon_context *ictx; | ||
687 | |||
688 | ictx = dev_get_drvdata(d); | ||
689 | |||
690 | if (!ictx) | ||
691 | return -ENODEV; | ||
692 | |||
693 | mutex_lock(&ictx->lock); | ||
694 | ictx->rf_isassociating = true; | ||
695 | send_associate_24g(ictx); | ||
696 | mutex_unlock(&ictx->lock); | ||
697 | |||
698 | return count; | ||
699 | } | ||
700 | |||
701 | /** | ||
702 | * sysfs functions to control internal imon clock | ||
703 | */ | ||
704 | static ssize_t show_imon_clock(struct device *d, | ||
705 | struct device_attribute *attr, char *buf) | ||
706 | { | ||
707 | struct imon_context *ictx = dev_get_drvdata(d); | ||
708 | size_t len; | ||
709 | |||
710 | if (!ictx) | ||
711 | return -ENODEV; | ||
712 | |||
713 | mutex_lock(&ictx->lock); | ||
714 | |||
715 | if (!ictx->display_supported) { | ||
716 | len = snprintf(buf, PAGE_SIZE, "Not supported."); | ||
717 | } else { | ||
718 | len = snprintf(buf, PAGE_SIZE, | ||
719 | "To set the clock on your iMON display:\n" | ||
720 | "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n" | ||
721 | "%s", ictx->display_isopen ? | ||
722 | "\nNOTE: imon device must be closed\n" : ""); | ||
723 | } | ||
724 | |||
725 | mutex_unlock(&ictx->lock); | ||
726 | |||
727 | return len; | ||
728 | } | ||
729 | |||
730 | static ssize_t store_imon_clock(struct device *d, | ||
731 | struct device_attribute *attr, | ||
732 | const char *buf, size_t count) | ||
733 | { | ||
734 | struct imon_context *ictx = dev_get_drvdata(d); | ||
735 | ssize_t retval; | ||
736 | unsigned int year, month, day, dow, hour, minute, second; | ||
737 | |||
738 | if (!ictx) | ||
739 | return -ENODEV; | ||
740 | |||
741 | mutex_lock(&ictx->lock); | ||
742 | |||
743 | if (!ictx->display_supported) { | ||
744 | retval = -ENODEV; | ||
745 | goto exit; | ||
746 | } else if (ictx->display_isopen) { | ||
747 | retval = -EBUSY; | ||
748 | goto exit; | ||
749 | } | ||
750 | |||
751 | if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow, | ||
752 | &hour, &minute, &second) != 7) { | ||
753 | retval = -EINVAL; | ||
754 | goto exit; | ||
755 | } | ||
756 | |||
757 | if ((month < 1 || month > 12) || | ||
758 | (day < 1 || day > 31) || (dow > 6) || | ||
759 | (hour > 23) || (minute > 59) || (second > 59)) { | ||
760 | retval = -EINVAL; | ||
761 | goto exit; | ||
762 | } | ||
763 | |||
764 | retval = send_set_imon_clock(ictx, year, month, day, dow, | ||
765 | hour, minute, second); | ||
766 | if (retval) | ||
767 | goto exit; | ||
768 | |||
769 | retval = count; | ||
770 | exit: | ||
771 | mutex_unlock(&ictx->lock); | ||
772 | |||
773 | return retval; | ||
774 | } | ||
775 | |||
776 | |||
777 | static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock, | ||
778 | store_imon_clock); | ||
779 | |||
780 | static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote, | ||
781 | store_associate_remote); | ||
782 | |||
783 | static struct attribute *imon_display_sysfs_entries[] = { | ||
784 | &dev_attr_imon_clock.attr, | ||
785 | NULL | ||
786 | }; | ||
787 | |||
788 | static struct attribute_group imon_display_attr_group = { | ||
789 | .attrs = imon_display_sysfs_entries | ||
790 | }; | ||
791 | |||
792 | static struct attribute *imon_rf_sysfs_entries[] = { | ||
793 | &dev_attr_associate_remote.attr, | ||
794 | NULL | ||
795 | }; | ||
796 | |||
797 | static struct attribute_group imon_rf_attr_group = { | ||
798 | .attrs = imon_rf_sysfs_entries | ||
799 | }; | ||
800 | |||
801 | /** | ||
802 | * Writes data to the VFD. The iMON VFD is 2x16 characters | ||
803 | * and requires data in 5 consecutive USB interrupt packets, | ||
804 | * each packet but the last carrying 7 bytes. | ||
805 | * | ||
806 | * I don't know if the VFD board supports features such as | ||
807 | * scrolling, clearing rows, blanking, etc. so at | ||
808 | * the caller must provide a full screen of data. If fewer | ||
809 | * than 32 bytes are provided spaces will be appended to | ||
810 | * generate a full screen. | ||
811 | */ | ||
812 | static ssize_t vfd_write(struct file *file, const char *buf, | ||
813 | size_t n_bytes, loff_t *pos) | ||
814 | { | ||
815 | int i; | ||
816 | int offset; | ||
817 | int seq; | ||
818 | int retval = 0; | ||
819 | struct imon_context *ictx; | ||
820 | const unsigned char vfd_packet6[] = { | ||
821 | 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF }; | ||
822 | |||
823 | ictx = file->private_data; | ||
824 | if (!ictx) { | ||
825 | pr_err("no context for device\n"); | ||
826 | return -ENODEV; | ||
827 | } | ||
828 | |||
829 | mutex_lock(&ictx->lock); | ||
830 | |||
831 | if (!ictx->dev_present_intf0) { | ||
832 | pr_err("no iMON device present\n"); | ||
833 | retval = -ENODEV; | ||
834 | goto exit; | ||
835 | } | ||
836 | |||
837 | if (n_bytes <= 0 || n_bytes > 32) { | ||
838 | pr_err("invalid payload size\n"); | ||
839 | retval = -EINVAL; | ||
840 | goto exit; | ||
841 | } | ||
842 | |||
843 | if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) { | ||
844 | retval = -EFAULT; | ||
845 | goto exit; | ||
846 | } | ||
847 | |||
848 | /* Pad with spaces */ | ||
849 | for (i = n_bytes; i < 32; ++i) | ||
850 | ictx->tx.data_buf[i] = ' '; | ||
851 | |||
852 | for (i = 32; i < 35; ++i) | ||
853 | ictx->tx.data_buf[i] = 0xFF; | ||
854 | |||
855 | offset = 0; | ||
856 | seq = 0; | ||
857 | |||
858 | do { | ||
859 | memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7); | ||
860 | ictx->usb_tx_buf[7] = (unsigned char) seq; | ||
861 | |||
862 | retval = send_packet(ictx); | ||
863 | if (retval) { | ||
864 | pr_err("send packet failed for packet #%d\n", seq / 2); | ||
865 | goto exit; | ||
866 | } else { | ||
867 | seq += 2; | ||
868 | offset += 7; | ||
869 | } | ||
870 | |||
871 | } while (offset < 35); | ||
872 | |||
873 | /* Send packet #6 */ | ||
874 | memcpy(ictx->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6)); | ||
875 | ictx->usb_tx_buf[7] = (unsigned char) seq; | ||
876 | retval = send_packet(ictx); | ||
877 | if (retval) | ||
878 | pr_err("send packet failed for packet #%d\n", seq / 2); | ||
879 | |||
880 | exit: | ||
881 | mutex_unlock(&ictx->lock); | ||
882 | |||
883 | return (!retval) ? n_bytes : retval; | ||
884 | } | ||
885 | |||
886 | /** | ||
887 | * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte | ||
888 | * packets. We accept data as 16 hexadecimal digits, followed by a | ||
889 | * newline (to make it easy to drive the device from a command-line | ||
890 | * -- even though the actual binary data is a bit complicated). | ||
891 | * | ||
892 | * The device itself is not a "traditional" text-mode display. It's | ||
893 | * actually a 16x96 pixel bitmap display. That means if you want to | ||
894 | * display text, you've got to have your own "font" and translate the | ||
895 | * text into bitmaps for display. This is really flexible (you can | ||
896 | * display whatever diacritics you need, and so on), but it's also | ||
897 | * a lot more complicated than most LCDs... | ||
898 | */ | ||
899 | static ssize_t lcd_write(struct file *file, const char *buf, | ||
900 | size_t n_bytes, loff_t *pos) | ||
901 | { | ||
902 | int retval = 0; | ||
903 | struct imon_context *ictx; | ||
904 | |||
905 | ictx = file->private_data; | ||
906 | if (!ictx) { | ||
907 | pr_err("no context for device\n"); | ||
908 | return -ENODEV; | ||
909 | } | ||
910 | |||
911 | mutex_lock(&ictx->lock); | ||
912 | |||
913 | if (!ictx->display_supported) { | ||
914 | pr_err("no iMON display present\n"); | ||
915 | retval = -ENODEV; | ||
916 | goto exit; | ||
917 | } | ||
918 | |||
919 | if (n_bytes != 8) { | ||
920 | pr_err("invalid payload size: %d (expected 8)\n", (int)n_bytes); | ||
921 | retval = -EINVAL; | ||
922 | goto exit; | ||
923 | } | ||
924 | |||
925 | if (copy_from_user(ictx->usb_tx_buf, buf, 8)) { | ||
926 | retval = -EFAULT; | ||
927 | goto exit; | ||
928 | } | ||
929 | |||
930 | retval = send_packet(ictx); | ||
931 | if (retval) { | ||
932 | pr_err("send packet failed!\n"); | ||
933 | goto exit; | ||
934 | } else { | ||
935 | dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n", | ||
936 | __func__, (int) n_bytes); | ||
937 | } | ||
938 | exit: | ||
939 | mutex_unlock(&ictx->lock); | ||
940 | return (!retval) ? n_bytes : retval; | ||
941 | } | ||
942 | |||
943 | /** | ||
944 | * Callback function for USB core API: transmit data | ||
945 | */ | ||
946 | static void usb_tx_callback(struct urb *urb) | ||
947 | { | ||
948 | struct imon_context *ictx; | ||
949 | |||
950 | if (!urb) | ||
951 | return; | ||
952 | ictx = (struct imon_context *)urb->context; | ||
953 | if (!ictx) | ||
954 | return; | ||
955 | |||
956 | ictx->tx.status = urb->status; | ||
957 | |||
958 | /* notify waiters that write has finished */ | ||
959 | ictx->tx.busy = false; | ||
960 | smp_rmb(); /* ensure later readers know we're not busy */ | ||
961 | complete(&ictx->tx.finished); | ||
962 | } | ||
963 | |||
964 | /** | ||
965 | * report touchscreen input | ||
966 | */ | ||
967 | static void imon_touch_display_timeout(unsigned long data) | ||
968 | { | ||
969 | struct imon_context *ictx = (struct imon_context *)data; | ||
970 | |||
971 | if (ictx->display_type != IMON_DISPLAY_TYPE_VGA) | ||
972 | return; | ||
973 | |||
974 | input_report_abs(ictx->touch, ABS_X, ictx->touch_x); | ||
975 | input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); | ||
976 | input_report_key(ictx->touch, BTN_TOUCH, 0x00); | ||
977 | input_sync(ictx->touch); | ||
978 | } | ||
979 | |||
980 | /** | ||
981 | * iMON IR receivers support two different signal sets -- those used by | ||
982 | * the iMON remotes, and those used by the Windows MCE remotes (which is | ||
983 | * really just RC-6), but only one or the other at a time, as the signals | ||
984 | * are decoded onboard the receiver. | ||
985 | */ | ||
986 | static int imon_ir_change_protocol(struct rc_dev *rc, u64 rc_type) | ||
987 | { | ||
988 | int retval; | ||
989 | struct imon_context *ictx = rc->priv; | ||
990 | struct device *dev = ictx->dev; | ||
991 | bool pad_mouse; | ||
992 | unsigned char ir_proto_packet[] = { | ||
993 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 }; | ||
994 | |||
995 | if (rc_type && !(rc_type & rc->allowed_protos)) | ||
996 | dev_warn(dev, "Looks like you're trying to use an IR protocol " | ||
997 | "this device does not support\n"); | ||
998 | |||
999 | switch (rc_type) { | ||
1000 | case RC_TYPE_RC6: | ||
1001 | dev_dbg(dev, "Configuring IR receiver for MCE protocol\n"); | ||
1002 | ir_proto_packet[0] = 0x01; | ||
1003 | pad_mouse = false; | ||
1004 | break; | ||
1005 | case RC_TYPE_UNKNOWN: | ||
1006 | case RC_TYPE_OTHER: | ||
1007 | dev_dbg(dev, "Configuring IR receiver for iMON protocol\n"); | ||
1008 | if (pad_stabilize && !nomouse) | ||
1009 | pad_mouse = true; | ||
1010 | else { | ||
1011 | dev_dbg(dev, "PAD stabilize functionality disabled\n"); | ||
1012 | pad_mouse = false; | ||
1013 | } | ||
1014 | /* ir_proto_packet[0] = 0x00; // already the default */ | ||
1015 | rc_type = RC_TYPE_OTHER; | ||
1016 | break; | ||
1017 | default: | ||
1018 | dev_warn(dev, "Unsupported IR protocol specified, overriding " | ||
1019 | "to iMON IR protocol\n"); | ||
1020 | if (pad_stabilize && !nomouse) | ||
1021 | pad_mouse = true; | ||
1022 | else { | ||
1023 | dev_dbg(dev, "PAD stabilize functionality disabled\n"); | ||
1024 | pad_mouse = false; | ||
1025 | } | ||
1026 | /* ir_proto_packet[0] = 0x00; // already the default */ | ||
1027 | rc_type = RC_TYPE_OTHER; | ||
1028 | break; | ||
1029 | } | ||
1030 | |||
1031 | memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet)); | ||
1032 | |||
1033 | retval = send_packet(ictx); | ||
1034 | if (retval) | ||
1035 | goto out; | ||
1036 | |||
1037 | ictx->rc_type = rc_type; | ||
1038 | ictx->pad_mouse = pad_mouse; | ||
1039 | |||
1040 | out: | ||
1041 | return retval; | ||
1042 | } | ||
1043 | |||
1044 | static inline int tv2int(const struct timeval *a, const struct timeval *b) | ||
1045 | { | ||
1046 | int usecs = 0; | ||
1047 | int sec = 0; | ||
1048 | |||
1049 | if (b->tv_usec > a->tv_usec) { | ||
1050 | usecs = 1000000; | ||
1051 | sec--; | ||
1052 | } | ||
1053 | |||
1054 | usecs += a->tv_usec - b->tv_usec; | ||
1055 | |||
1056 | sec += a->tv_sec - b->tv_sec; | ||
1057 | sec *= 1000; | ||
1058 | usecs /= 1000; | ||
1059 | sec += usecs; | ||
1060 | |||
1061 | if (sec < 0) | ||
1062 | sec = 1000; | ||
1063 | |||
1064 | return sec; | ||
1065 | } | ||
1066 | |||
1067 | /** | ||
1068 | * The directional pad behaves a bit differently, depending on whether this is | ||
1069 | * one of the older ffdc devices or a newer device. Newer devices appear to | ||
1070 | * have a higher resolution matrix for more precise mouse movement, but it | ||
1071 | * makes things overly sensitive in keyboard mode, so we do some interesting | ||
1072 | * contortions to make it less touchy. Older devices run through the same | ||
1073 | * routine with shorter timeout and a smaller threshold. | ||
1074 | */ | ||
1075 | static int stabilize(int a, int b, u16 timeout, u16 threshold) | ||
1076 | { | ||
1077 | struct timeval ct; | ||
1078 | static struct timeval prev_time = {0, 0}; | ||
1079 | static struct timeval hit_time = {0, 0}; | ||
1080 | static int x, y, prev_result, hits; | ||
1081 | int result = 0; | ||
1082 | int msec, msec_hit; | ||
1083 | |||
1084 | do_gettimeofday(&ct); | ||
1085 | msec = tv2int(&ct, &prev_time); | ||
1086 | msec_hit = tv2int(&ct, &hit_time); | ||
1087 | |||
1088 | if (msec > 100) { | ||
1089 | x = 0; | ||
1090 | y = 0; | ||
1091 | hits = 0; | ||
1092 | } | ||
1093 | |||
1094 | x += a; | ||
1095 | y += b; | ||
1096 | |||
1097 | prev_time = ct; | ||
1098 | |||
1099 | if (abs(x) > threshold || abs(y) > threshold) { | ||
1100 | if (abs(y) > abs(x)) | ||
1101 | result = (y > 0) ? 0x7F : 0x80; | ||
1102 | else | ||
1103 | result = (x > 0) ? 0x7F00 : 0x8000; | ||
1104 | |||
1105 | x = 0; | ||
1106 | y = 0; | ||
1107 | |||
1108 | if (result == prev_result) { | ||
1109 | hits++; | ||
1110 | |||
1111 | if (hits > 3) { | ||
1112 | switch (result) { | ||
1113 | case 0x7F: | ||
1114 | y = 17 * threshold / 30; | ||
1115 | break; | ||
1116 | case 0x80: | ||
1117 | y -= 17 * threshold / 30; | ||
1118 | break; | ||
1119 | case 0x7F00: | ||
1120 | x = 17 * threshold / 30; | ||
1121 | break; | ||
1122 | case 0x8000: | ||
1123 | x -= 17 * threshold / 30; | ||
1124 | break; | ||
1125 | } | ||
1126 | } | ||
1127 | |||
1128 | if (hits == 2 && msec_hit < timeout) { | ||
1129 | result = 0; | ||
1130 | hits = 1; | ||
1131 | } | ||
1132 | } else { | ||
1133 | prev_result = result; | ||
1134 | hits = 1; | ||
1135 | hit_time = ct; | ||
1136 | } | ||
1137 | } | ||
1138 | |||
1139 | return result; | ||
1140 | } | ||
1141 | |||
1142 | static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 scancode) | ||
1143 | { | ||
1144 | u32 keycode; | ||
1145 | u32 release; | ||
1146 | bool is_release_code = false; | ||
1147 | |||
1148 | /* Look for the initial press of a button */ | ||
1149 | keycode = rc_g_keycode_from_table(ictx->rdev, scancode); | ||
1150 | ictx->rc_toggle = 0x0; | ||
1151 | ictx->rc_scancode = scancode; | ||
1152 | |||
1153 | /* Look for the release of a button */ | ||
1154 | if (keycode == KEY_RESERVED) { | ||
1155 | release = scancode & ~0x4000; | ||
1156 | keycode = rc_g_keycode_from_table(ictx->rdev, release); | ||
1157 | if (keycode != KEY_RESERVED) | ||
1158 | is_release_code = true; | ||
1159 | } | ||
1160 | |||
1161 | ictx->release_code = is_release_code; | ||
1162 | |||
1163 | return keycode; | ||
1164 | } | ||
1165 | |||
1166 | static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 scancode) | ||
1167 | { | ||
1168 | u32 keycode; | ||
1169 | |||
1170 | #define MCE_KEY_MASK 0x7000 | ||
1171 | #define MCE_TOGGLE_BIT 0x8000 | ||
1172 | |||
1173 | /* | ||
1174 | * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx | ||
1175 | * (the toggle bit flipping between alternating key presses), while | ||
1176 | * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep | ||
1177 | * the table trim, we always or in the bits to look up 0x8000ff4xx, | ||
1178 | * but we can't or them into all codes, as some keys are decoded in | ||
1179 | * a different way w/o the same use of the toggle bit... | ||
1180 | */ | ||
1181 | if (scancode & 0x80000000) | ||
1182 | scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT; | ||
1183 | |||
1184 | ictx->rc_scancode = scancode; | ||
1185 | keycode = rc_g_keycode_from_table(ictx->rdev, scancode); | ||
1186 | |||
1187 | /* not used in mce mode, but make sure we know its false */ | ||
1188 | ictx->release_code = false; | ||
1189 | |||
1190 | return keycode; | ||
1191 | } | ||
1192 | |||
1193 | static u32 imon_panel_key_lookup(u64 code) | ||
1194 | { | ||
1195 | int i; | ||
1196 | u32 keycode = KEY_RESERVED; | ||
1197 | |||
1198 | for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) { | ||
1199 | if (imon_panel_key_table[i].hw_code == (code | 0xffee)) { | ||
1200 | keycode = imon_panel_key_table[i].keycode; | ||
1201 | break; | ||
1202 | } | ||
1203 | } | ||
1204 | |||
1205 | return keycode; | ||
1206 | } | ||
1207 | |||
1208 | static bool imon_mouse_event(struct imon_context *ictx, | ||
1209 | unsigned char *buf, int len) | ||
1210 | { | ||
1211 | char rel_x = 0x00, rel_y = 0x00; | ||
1212 | u8 right_shift = 1; | ||
1213 | bool mouse_input = true; | ||
1214 | int dir = 0; | ||
1215 | unsigned long flags; | ||
1216 | |||
1217 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1218 | |||
1219 | /* newer iMON device PAD or mouse button */ | ||
1220 | if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) { | ||
1221 | rel_x = buf[2]; | ||
1222 | rel_y = buf[3]; | ||
1223 | right_shift = 1; | ||
1224 | /* 0xffdc iMON PAD or mouse button input */ | ||
1225 | } else if (ictx->product == 0xffdc && (buf[0] & 0x40) && | ||
1226 | !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) { | ||
1227 | rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | | ||
1228 | (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6; | ||
1229 | if (buf[0] & 0x02) | ||
1230 | rel_x |= ~0x0f; | ||
1231 | rel_x = rel_x + rel_x / 2; | ||
1232 | rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | | ||
1233 | (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6; | ||
1234 | if (buf[0] & 0x01) | ||
1235 | rel_y |= ~0x0f; | ||
1236 | rel_y = rel_y + rel_y / 2; | ||
1237 | right_shift = 2; | ||
1238 | /* some ffdc devices decode mouse buttons differently... */ | ||
1239 | } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) { | ||
1240 | right_shift = 2; | ||
1241 | /* ch+/- buttons, which we use for an emulated scroll wheel */ | ||
1242 | } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) { | ||
1243 | dir = 1; | ||
1244 | } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) { | ||
1245 | dir = -1; | ||
1246 | } else | ||
1247 | mouse_input = false; | ||
1248 | |||
1249 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
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 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1266 | ictx->last_keycode = ictx->kc; | ||
1267 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1268 | } | ||
1269 | |||
1270 | return mouse_input; | ||
1271 | } | ||
1272 | |||
1273 | static void imon_touch_event(struct imon_context *ictx, unsigned char *buf) | ||
1274 | { | ||
1275 | mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT); | ||
1276 | ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4); | ||
1277 | ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf)); | ||
1278 | input_report_abs(ictx->touch, ABS_X, ictx->touch_x); | ||
1279 | input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); | ||
1280 | input_report_key(ictx->touch, BTN_TOUCH, 0x01); | ||
1281 | input_sync(ictx->touch); | ||
1282 | } | ||
1283 | |||
1284 | static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf) | ||
1285 | { | ||
1286 | int dir = 0; | ||
1287 | char rel_x = 0x00, rel_y = 0x00; | ||
1288 | u16 timeout, threshold; | ||
1289 | u32 scancode = KEY_RESERVED; | ||
1290 | unsigned long flags; | ||
1291 | |||
1292 | /* | ||
1293 | * The imon directional pad functions more like a touchpad. Bytes 3 & 4 | ||
1294 | * contain a position coordinate (x,y), with each component ranging | ||
1295 | * from -14 to 14. We want to down-sample this to only 4 discrete values | ||
1296 | * for up/down/left/right arrow keys. Also, when you get too close to | ||
1297 | * diagonals, it has a tendancy to jump back and forth, so lets try to | ||
1298 | * ignore when they get too close. | ||
1299 | */ | ||
1300 | if (ictx->product != 0xffdc) { | ||
1301 | /* first, pad to 8 bytes so it conforms with everything else */ | ||
1302 | buf[5] = buf[6] = buf[7] = 0; | ||
1303 | timeout = 500; /* in msecs */ | ||
1304 | /* (2*threshold) x (2*threshold) square */ | ||
1305 | threshold = pad_thresh ? pad_thresh : 28; | ||
1306 | rel_x = buf[2]; | ||
1307 | rel_y = buf[3]; | ||
1308 | |||
1309 | if (ictx->rc_type == RC_TYPE_OTHER && pad_stabilize) { | ||
1310 | if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) { | ||
1311 | dir = stabilize((int)rel_x, (int)rel_y, | ||
1312 | timeout, threshold); | ||
1313 | if (!dir) { | ||
1314 | spin_lock_irqsave(&ictx->kc_lock, | ||
1315 | flags); | ||
1316 | ictx->kc = KEY_UNKNOWN; | ||
1317 | spin_unlock_irqrestore(&ictx->kc_lock, | ||
1318 | flags); | ||
1319 | return; | ||
1320 | } | ||
1321 | buf[2] = dir & 0xFF; | ||
1322 | buf[3] = (dir >> 8) & 0xFF; | ||
1323 | scancode = be32_to_cpu(*((u32 *)buf)); | ||
1324 | } | ||
1325 | } else { | ||
1326 | /* | ||
1327 | * Hack alert: instead of using keycodes, we have | ||
1328 | * to use hard-coded scancodes here... | ||
1329 | */ | ||
1330 | if (abs(rel_y) > abs(rel_x)) { | ||
1331 | buf[2] = (rel_y > 0) ? 0x7F : 0x80; | ||
1332 | buf[3] = 0; | ||
1333 | if (rel_y > 0) | ||
1334 | scancode = 0x01007f00; /* KEY_DOWN */ | ||
1335 | else | ||
1336 | scancode = 0x01008000; /* KEY_UP */ | ||
1337 | } else { | ||
1338 | buf[2] = 0; | ||
1339 | buf[3] = (rel_x > 0) ? 0x7F : 0x80; | ||
1340 | if (rel_x > 0) | ||
1341 | scancode = 0x0100007f; /* KEY_RIGHT */ | ||
1342 | else | ||
1343 | scancode = 0x01000080; /* KEY_LEFT */ | ||
1344 | } | ||
1345 | } | ||
1346 | |||
1347 | /* | ||
1348 | * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad | ||
1349 | * device (15c2:ffdc). The remote generates various codes from | ||
1350 | * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates | ||
1351 | * 0x688301b7 and the right one 0x688481b7. All other keys generate | ||
1352 | * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with | ||
1353 | * reversed endianess. Extract direction from buffer, rotate endianess, | ||
1354 | * adjust sign and feed the values into stabilize(). The resulting codes | ||
1355 | * will be 0x01008000, 0x01007F00, which match the newer devices. | ||
1356 | */ | ||
1357 | } else { | ||
1358 | timeout = 10; /* in msecs */ | ||
1359 | /* (2*threshold) x (2*threshold) square */ | ||
1360 | threshold = pad_thresh ? pad_thresh : 15; | ||
1361 | |||
1362 | /* buf[1] is x */ | ||
1363 | rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | | ||
1364 | (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6; | ||
1365 | if (buf[0] & 0x02) | ||
1366 | rel_x |= ~0x10+1; | ||
1367 | /* buf[2] is y */ | ||
1368 | rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | | ||
1369 | (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6; | ||
1370 | if (buf[0] & 0x01) | ||
1371 | rel_y |= ~0x10+1; | ||
1372 | |||
1373 | buf[0] = 0x01; | ||
1374 | buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0; | ||
1375 | |||
1376 | if (ictx->rc_type == RC_TYPE_OTHER && pad_stabilize) { | ||
1377 | dir = stabilize((int)rel_x, (int)rel_y, | ||
1378 | timeout, threshold); | ||
1379 | if (!dir) { | ||
1380 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1381 | ictx->kc = KEY_UNKNOWN; | ||
1382 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1383 | return; | ||
1384 | } | ||
1385 | buf[2] = dir & 0xFF; | ||
1386 | buf[3] = (dir >> 8) & 0xFF; | ||
1387 | scancode = be32_to_cpu(*((u32 *)buf)); | ||
1388 | } else { | ||
1389 | /* | ||
1390 | * Hack alert: instead of using keycodes, we have | ||
1391 | * to use hard-coded scancodes here... | ||
1392 | */ | ||
1393 | if (abs(rel_y) > abs(rel_x)) { | ||
1394 | buf[2] = (rel_y > 0) ? 0x7F : 0x80; | ||
1395 | buf[3] = 0; | ||
1396 | if (rel_y > 0) | ||
1397 | scancode = 0x01007f00; /* KEY_DOWN */ | ||
1398 | else | ||
1399 | scancode = 0x01008000; /* KEY_UP */ | ||
1400 | } else { | ||
1401 | buf[2] = 0; | ||
1402 | buf[3] = (rel_x > 0) ? 0x7F : 0x80; | ||
1403 | if (rel_x > 0) | ||
1404 | scancode = 0x0100007f; /* KEY_RIGHT */ | ||
1405 | else | ||
1406 | scancode = 0x01000080; /* KEY_LEFT */ | ||
1407 | } | ||
1408 | } | ||
1409 | } | ||
1410 | |||
1411 | if (scancode) { | ||
1412 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1413 | ictx->kc = imon_remote_key_lookup(ictx, scancode); | ||
1414 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1415 | } | ||
1416 | } | ||
1417 | |||
1418 | /** | ||
1419 | * figure out if these is a press or a release. We don't actually | ||
1420 | * care about repeats, as those will be auto-generated within the IR | ||
1421 | * subsystem for repeating scancodes. | ||
1422 | */ | ||
1423 | static int imon_parse_press_type(struct imon_context *ictx, | ||
1424 | unsigned char *buf, u8 ktype) | ||
1425 | { | ||
1426 | int press_type = 0; | ||
1427 | unsigned long flags; | ||
1428 | |||
1429 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1430 | |||
1431 | /* key release of 0x02XXXXXX key */ | ||
1432 | if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00) | ||
1433 | ictx->kc = ictx->last_keycode; | ||
1434 | |||
1435 | /* mouse button release on (some) 0xffdc devices */ | ||
1436 | else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 && | ||
1437 | buf[2] == 0x81 && buf[3] == 0xb7) | ||
1438 | ictx->kc = ictx->last_keycode; | ||
1439 | |||
1440 | /* mouse button release on (some other) 0xffdc devices */ | ||
1441 | else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 && | ||
1442 | buf[2] == 0x81 && buf[3] == 0xb7) | ||
1443 | ictx->kc = ictx->last_keycode; | ||
1444 | |||
1445 | /* mce-specific button handling, no keyup events */ | ||
1446 | else if (ktype == IMON_KEY_MCE) { | ||
1447 | ictx->rc_toggle = buf[2]; | ||
1448 | press_type = 1; | ||
1449 | |||
1450 | /* incoherent or irrelevant data */ | ||
1451 | } else if (ictx->kc == KEY_RESERVED) | ||
1452 | press_type = -EINVAL; | ||
1453 | |||
1454 | /* key release of 0xXXXXXXb7 key */ | ||
1455 | else if (ictx->release_code) | ||
1456 | press_type = 0; | ||
1457 | |||
1458 | /* this is a button press */ | ||
1459 | else | ||
1460 | press_type = 1; | ||
1461 | |||
1462 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1463 | |||
1464 | return press_type; | ||
1465 | } | ||
1466 | |||
1467 | /** | ||
1468 | * Process the incoming packet | ||
1469 | */ | ||
1470 | static void imon_incoming_packet(struct imon_context *ictx, | ||
1471 | struct urb *urb, int intf) | ||
1472 | { | ||
1473 | int len = urb->actual_length; | ||
1474 | unsigned char *buf = urb->transfer_buffer; | ||
1475 | struct device *dev = ictx->dev; | ||
1476 | unsigned long flags; | ||
1477 | u32 kc; | ||
1478 | bool norelease = false; | ||
1479 | int i; | ||
1480 | u64 scancode; | ||
1481 | int press_type = 0; | ||
1482 | int msec; | ||
1483 | struct timeval t; | ||
1484 | static struct timeval prev_time = { 0, 0 }; | ||
1485 | u8 ktype; | ||
1486 | |||
1487 | /* filter out junk data on the older 0xffdc imon devices */ | ||
1488 | if ((buf[0] == 0xff) && (buf[1] == 0xff) && (buf[2] == 0xff)) | ||
1489 | return; | ||
1490 | |||
1491 | /* Figure out what key was pressed */ | ||
1492 | if (len == 8 && buf[7] == 0xee) { | ||
1493 | scancode = be64_to_cpu(*((u64 *)buf)); | ||
1494 | ktype = IMON_KEY_PANEL; | ||
1495 | kc = imon_panel_key_lookup(scancode); | ||
1496 | } else { | ||
1497 | scancode = be32_to_cpu(*((u32 *)buf)); | ||
1498 | if (ictx->rc_type == RC_TYPE_RC6) { | ||
1499 | ktype = IMON_KEY_IMON; | ||
1500 | if (buf[0] == 0x80) | ||
1501 | ktype = IMON_KEY_MCE; | ||
1502 | kc = imon_mce_key_lookup(ictx, scancode); | ||
1503 | } else { | ||
1504 | ktype = IMON_KEY_IMON; | ||
1505 | kc = imon_remote_key_lookup(ictx, scancode); | ||
1506 | } | ||
1507 | } | ||
1508 | |||
1509 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1510 | /* keyboard/mouse mode toggle button */ | ||
1511 | if (kc == KEY_KEYBOARD && !ictx->release_code) { | ||
1512 | ictx->last_keycode = kc; | ||
1513 | if (!nomouse) { | ||
1514 | ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1; | ||
1515 | dev_dbg(dev, "toggling to %s mode\n", | ||
1516 | ictx->pad_mouse ? "mouse" : "keyboard"); | ||
1517 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1518 | return; | ||
1519 | } else { | ||
1520 | ictx->pad_mouse = 0; | ||
1521 | dev_dbg(dev, "mouse mode disabled, passing key value\n"); | ||
1522 | } | ||
1523 | } | ||
1524 | |||
1525 | ictx->kc = kc; | ||
1526 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1527 | |||
1528 | /* send touchscreen events through input subsystem if touchpad data */ | ||
1529 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 && | ||
1530 | buf[7] == 0x86) { | ||
1531 | imon_touch_event(ictx, buf); | ||
1532 | return; | ||
1533 | |||
1534 | /* look for mouse events with pad in mouse mode */ | ||
1535 | } else if (ictx->pad_mouse) { | ||
1536 | if (imon_mouse_event(ictx, buf, len)) | ||
1537 | return; | ||
1538 | } | ||
1539 | |||
1540 | /* Now for some special handling to convert pad input to arrow keys */ | ||
1541 | if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) || | ||
1542 | ((len == 8) && (buf[0] & 0x40) && | ||
1543 | !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) { | ||
1544 | len = 8; | ||
1545 | imon_pad_to_keys(ictx, buf); | ||
1546 | norelease = true; | ||
1547 | } | ||
1548 | |||
1549 | if (debug) { | ||
1550 | printk(KERN_INFO "intf%d decoded packet: ", intf); | ||
1551 | for (i = 0; i < len; ++i) | ||
1552 | printk("%02x ", buf[i]); | ||
1553 | printk("\n"); | ||
1554 | } | ||
1555 | |||
1556 | press_type = imon_parse_press_type(ictx, buf, ktype); | ||
1557 | if (press_type < 0) | ||
1558 | goto not_input_data; | ||
1559 | |||
1560 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1561 | if (ictx->kc == KEY_UNKNOWN) | ||
1562 | goto unknown_key; | ||
1563 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1564 | |||
1565 | if (ktype != IMON_KEY_PANEL) { | ||
1566 | if (press_type == 0) | ||
1567 | rc_keyup(ictx->rdev); | ||
1568 | else { | ||
1569 | rc_keydown(ictx->rdev, ictx->rc_scancode, ictx->rc_toggle); | ||
1570 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1571 | ictx->last_keycode = ictx->kc; | ||
1572 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1573 | } | ||
1574 | return; | ||
1575 | } | ||
1576 | |||
1577 | /* Only panel type events left to process now */ | ||
1578 | spin_lock_irqsave(&ictx->kc_lock, flags); | ||
1579 | |||
1580 | /* KEY_MUTE repeats from knob need to be suppressed */ | ||
1581 | if (ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) { | ||
1582 | do_gettimeofday(&t); | ||
1583 | msec = tv2int(&t, &prev_time); | ||
1584 | prev_time = t; | ||
1585 | if (msec < ictx->idev->rep[REP_DELAY]) { | ||
1586 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1587 | return; | ||
1588 | } | ||
1589 | } | ||
1590 | kc = ictx->kc; | ||
1591 | |||
1592 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1593 | |||
1594 | input_report_key(ictx->idev, kc, press_type); | ||
1595 | input_sync(ictx->idev); | ||
1596 | |||
1597 | /* panel keys don't generate a release */ | ||
1598 | input_report_key(ictx->idev, kc, 0); | ||
1599 | input_sync(ictx->idev); | ||
1600 | |||
1601 | ictx->last_keycode = kc; | ||
1602 | |||
1603 | return; | ||
1604 | |||
1605 | unknown_key: | ||
1606 | spin_unlock_irqrestore(&ictx->kc_lock, flags); | ||
1607 | dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__, | ||
1608 | (long long)scancode); | ||
1609 | return; | ||
1610 | |||
1611 | not_input_data: | ||
1612 | if (len != 8) { | ||
1613 | dev_warn(dev, "imon %s: invalid incoming packet " | ||
1614 | "size (len = %d, intf%d)\n", __func__, len, intf); | ||
1615 | return; | ||
1616 | } | ||
1617 | |||
1618 | /* iMON 2.4G associate frame */ | ||
1619 | if (buf[0] == 0x00 && | ||
1620 | buf[2] == 0xFF && /* REFID */ | ||
1621 | buf[3] == 0xFF && | ||
1622 | buf[4] == 0xFF && | ||
1623 | buf[5] == 0xFF && /* iMON 2.4G */ | ||
1624 | ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */ | ||
1625 | (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */ | ||
1626 | dev_warn(dev, "%s: remote associated refid=%02X\n", | ||
1627 | __func__, buf[1]); | ||
1628 | ictx->rf_isassociating = false; | ||
1629 | } | ||
1630 | } | ||
1631 | |||
1632 | /** | ||
1633 | * Callback function for USB core API: receive data | ||
1634 | */ | ||
1635 | static void usb_rx_callback_intf0(struct urb *urb) | ||
1636 | { | ||
1637 | struct imon_context *ictx; | ||
1638 | int intfnum = 0; | ||
1639 | |||
1640 | if (!urb) | ||
1641 | return; | ||
1642 | |||
1643 | ictx = (struct imon_context *)urb->context; | ||
1644 | if (!ictx) | ||
1645 | return; | ||
1646 | |||
1647 | switch (urb->status) { | ||
1648 | case -ENOENT: /* usbcore unlink successful! */ | ||
1649 | return; | ||
1650 | |||
1651 | case -ESHUTDOWN: /* transport endpoint was shut down */ | ||
1652 | break; | ||
1653 | |||
1654 | case 0: | ||
1655 | imon_incoming_packet(ictx, urb, intfnum); | ||
1656 | break; | ||
1657 | |||
1658 | default: | ||
1659 | dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", | ||
1660 | __func__, urb->status); | ||
1661 | break; | ||
1662 | } | ||
1663 | |||
1664 | usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); | ||
1665 | } | ||
1666 | |||
1667 | static void usb_rx_callback_intf1(struct urb *urb) | ||
1668 | { | ||
1669 | struct imon_context *ictx; | ||
1670 | int intfnum = 1; | ||
1671 | |||
1672 | if (!urb) | ||
1673 | return; | ||
1674 | |||
1675 | ictx = (struct imon_context *)urb->context; | ||
1676 | if (!ictx) | ||
1677 | return; | ||
1678 | |||
1679 | switch (urb->status) { | ||
1680 | case -ENOENT: /* usbcore unlink successful! */ | ||
1681 | return; | ||
1682 | |||
1683 | case -ESHUTDOWN: /* transport endpoint was shut down */ | ||
1684 | break; | ||
1685 | |||
1686 | case 0: | ||
1687 | imon_incoming_packet(ictx, urb, intfnum); | ||
1688 | break; | ||
1689 | |||
1690 | default: | ||
1691 | dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", | ||
1692 | __func__, urb->status); | ||
1693 | break; | ||
1694 | } | ||
1695 | |||
1696 | usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); | ||
1697 | } | ||
1698 | |||
1699 | /* | ||
1700 | * The 0x15c2:0xffdc device ID was used for umpteen different imon | ||
1701 | * devices, and all of them constantly spew interrupts, even when there | ||
1702 | * is no actual data to report. However, byte 6 of this buffer looks like | ||
1703 | * its unique across device variants, so we're trying to key off that to | ||
1704 | * figure out which display type (if any) and what IR protocol the device | ||
1705 | * actually supports. These devices have their IR protocol hard-coded into | ||
1706 | * their firmware, they can't be changed on the fly like the newer hardware. | ||
1707 | */ | ||
1708 | static void imon_get_ffdc_type(struct imon_context *ictx) | ||
1709 | { | ||
1710 | u8 ffdc_cfg_byte = ictx->usb_rx_buf[6]; | ||
1711 | u8 detected_display_type = IMON_DISPLAY_TYPE_NONE; | ||
1712 | u64 allowed_protos = RC_TYPE_OTHER; | ||
1713 | |||
1714 | switch (ffdc_cfg_byte) { | ||
1715 | /* iMON Knob, no display, iMON IR + vol knob */ | ||
1716 | case 0x21: | ||
1717 | dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR"); | ||
1718 | ictx->display_supported = false; | ||
1719 | break; | ||
1720 | /* iMON 2.4G LT (usb stick), no display, iMON RF */ | ||
1721 | case 0x4e: | ||
1722 | dev_info(ictx->dev, "0xffdc iMON 2.4G LT, iMON RF"); | ||
1723 | ictx->display_supported = false; | ||
1724 | ictx->rf_device = true; | ||
1725 | break; | ||
1726 | /* iMON VFD, no IR (does have vol knob tho) */ | ||
1727 | case 0x35: | ||
1728 | dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR"); | ||
1729 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | ||
1730 | break; | ||
1731 | /* iMON VFD, iMON IR */ | ||
1732 | case 0x24: | ||
1733 | case 0x85: | ||
1734 | dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR"); | ||
1735 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | ||
1736 | break; | ||
1737 | /* iMON VFD, MCE IR */ | ||
1738 | case 0x9e: | ||
1739 | dev_info(ictx->dev, "0xffdc iMON VFD, MCE IR"); | ||
1740 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | ||
1741 | allowed_protos = RC_TYPE_RC6; | ||
1742 | break; | ||
1743 | /* iMON LCD, MCE IR */ | ||
1744 | case 0x9f: | ||
1745 | dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR"); | ||
1746 | detected_display_type = IMON_DISPLAY_TYPE_LCD; | ||
1747 | allowed_protos = RC_TYPE_RC6; | ||
1748 | break; | ||
1749 | default: | ||
1750 | dev_info(ictx->dev, "Unknown 0xffdc device, " | ||
1751 | "defaulting to VFD and iMON IR"); | ||
1752 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | ||
1753 | break; | ||
1754 | } | ||
1755 | |||
1756 | printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte); | ||
1757 | |||
1758 | ictx->display_type = detected_display_type; | ||
1759 | ictx->rdev->allowed_protos = allowed_protos; | ||
1760 | ictx->rc_type = allowed_protos; | ||
1761 | } | ||
1762 | |||
1763 | static void imon_set_display_type(struct imon_context *ictx) | ||
1764 | { | ||
1765 | u8 configured_display_type = IMON_DISPLAY_TYPE_VFD; | ||
1766 | |||
1767 | /* | ||
1768 | * Try to auto-detect the type of display if the user hasn't set | ||
1769 | * it by hand via the display_type modparam. Default is VFD. | ||
1770 | */ | ||
1771 | |||
1772 | if (display_type == IMON_DISPLAY_TYPE_AUTO) { | ||
1773 | switch (ictx->product) { | ||
1774 | case 0xffdc: | ||
1775 | /* set in imon_get_ffdc_type() */ | ||
1776 | configured_display_type = ictx->display_type; | ||
1777 | break; | ||
1778 | case 0x0034: | ||
1779 | case 0x0035: | ||
1780 | configured_display_type = IMON_DISPLAY_TYPE_VGA; | ||
1781 | break; | ||
1782 | case 0x0038: | ||
1783 | case 0x0039: | ||
1784 | case 0x0045: | ||
1785 | configured_display_type = IMON_DISPLAY_TYPE_LCD; | ||
1786 | break; | ||
1787 | case 0x003c: | ||
1788 | case 0x0041: | ||
1789 | case 0x0042: | ||
1790 | case 0x0043: | ||
1791 | configured_display_type = IMON_DISPLAY_TYPE_NONE; | ||
1792 | ictx->display_supported = false; | ||
1793 | break; | ||
1794 | case 0x0036: | ||
1795 | case 0x0044: | ||
1796 | default: | ||
1797 | configured_display_type = IMON_DISPLAY_TYPE_VFD; | ||
1798 | break; | ||
1799 | } | ||
1800 | } else { | ||
1801 | configured_display_type = display_type; | ||
1802 | if (display_type == IMON_DISPLAY_TYPE_NONE) | ||
1803 | ictx->display_supported = false; | ||
1804 | else | ||
1805 | ictx->display_supported = true; | ||
1806 | dev_info(ictx->dev, "%s: overriding display type to %d via " | ||
1807 | "modparam\n", __func__, display_type); | ||
1808 | } | ||
1809 | |||
1810 | ictx->display_type = configured_display_type; | ||
1811 | } | ||
1812 | |||
1813 | static struct rc_dev *imon_init_rdev(struct imon_context *ictx) | ||
1814 | { | ||
1815 | struct rc_dev *rdev; | ||
1816 | int ret; | ||
1817 | const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00, | ||
1818 | 0x00, 0x00, 0x00, 0x88 }; | ||
1819 | |||
1820 | rdev = rc_allocate_device(); | ||
1821 | if (!rdev) { | ||
1822 | dev_err(ictx->dev, "remote control dev allocation failed\n"); | ||
1823 | goto out; | ||
1824 | } | ||
1825 | |||
1826 | snprintf(ictx->name_rdev, sizeof(ictx->name_rdev), | ||
1827 | "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product); | ||
1828 | usb_make_path(ictx->usbdev_intf0, ictx->phys_rdev, | ||
1829 | sizeof(ictx->phys_rdev)); | ||
1830 | strlcat(ictx->phys_rdev, "/input0", sizeof(ictx->phys_rdev)); | ||
1831 | |||
1832 | rdev->input_name = ictx->name_rdev; | ||
1833 | rdev->input_phys = ictx->phys_rdev; | ||
1834 | usb_to_input_id(ictx->usbdev_intf0, &rdev->input_id); | ||
1835 | rdev->dev.parent = ictx->dev; | ||
1836 | |||
1837 | rdev->priv = ictx; | ||
1838 | rdev->driver_type = RC_DRIVER_SCANCODE; | ||
1839 | rdev->allowed_protos = RC_TYPE_OTHER | RC_TYPE_RC6; /* iMON PAD or MCE */ | ||
1840 | rdev->change_protocol = imon_ir_change_protocol; | ||
1841 | rdev->driver_name = MOD_NAME; | ||
1842 | if (ictx->rc_type == RC_TYPE_RC6) | ||
1843 | rdev->map_name = RC_MAP_IMON_MCE; | ||
1844 | else | ||
1845 | rdev->map_name = RC_MAP_IMON_PAD; | ||
1846 | |||
1847 | /* Enable front-panel buttons and/or knobs */ | ||
1848 | memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet)); | ||
1849 | ret = send_packet(ictx); | ||
1850 | /* Not fatal, but warn about it */ | ||
1851 | if (ret) | ||
1852 | dev_info(ictx->dev, "panel buttons/knobs setup failed\n"); | ||
1853 | |||
1854 | if (ictx->product == 0xffdc) | ||
1855 | imon_get_ffdc_type(ictx); | ||
1856 | |||
1857 | imon_set_display_type(ictx); | ||
1858 | |||
1859 | ret = rc_register_device(rdev); | ||
1860 | if (ret < 0) { | ||
1861 | dev_err(ictx->dev, "remote input dev register failed\n"); | ||
1862 | goto out; | ||
1863 | } | ||
1864 | |||
1865 | return rdev; | ||
1866 | |||
1867 | out: | ||
1868 | rc_free_device(rdev); | ||
1869 | return NULL; | ||
1870 | } | ||
1871 | |||
1872 | static struct input_dev *imon_init_idev(struct imon_context *ictx) | ||
1873 | { | ||
1874 | struct input_dev *idev; | ||
1875 | int ret, i; | ||
1876 | |||
1877 | idev = input_allocate_device(); | ||
1878 | if (!idev) { | ||
1879 | dev_err(ictx->dev, "input dev allocation failed\n"); | ||
1880 | goto out; | ||
1881 | } | ||
1882 | |||
1883 | snprintf(ictx->name_idev, sizeof(ictx->name_idev), | ||
1884 | "iMON Panel, Knob and Mouse(%04x:%04x)", | ||
1885 | ictx->vendor, ictx->product); | ||
1886 | idev->name = ictx->name_idev; | ||
1887 | |||
1888 | usb_make_path(ictx->usbdev_intf0, ictx->phys_idev, | ||
1889 | sizeof(ictx->phys_idev)); | ||
1890 | strlcat(ictx->phys_idev, "/input1", sizeof(ictx->phys_idev)); | ||
1891 | idev->phys = ictx->phys_idev; | ||
1892 | |||
1893 | idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL); | ||
1894 | |||
1895 | idev->keybit[BIT_WORD(BTN_MOUSE)] = | ||
1896 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); | ||
1897 | idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | | ||
1898 | BIT_MASK(REL_WHEEL); | ||
1899 | |||
1900 | /* panel and/or knob code support */ | ||
1901 | for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) { | ||
1902 | u32 kc = imon_panel_key_table[i].keycode; | ||
1903 | __set_bit(kc, idev->keybit); | ||
1904 | } | ||
1905 | |||
1906 | usb_to_input_id(ictx->usbdev_intf0, &idev->id); | ||
1907 | idev->dev.parent = ictx->dev; | ||
1908 | input_set_drvdata(idev, ictx); | ||
1909 | |||
1910 | ret = input_register_device(idev); | ||
1911 | if (ret < 0) { | ||
1912 | dev_err(ictx->dev, "input dev register failed\n"); | ||
1913 | goto out; | ||
1914 | } | ||
1915 | |||
1916 | return idev; | ||
1917 | |||
1918 | out: | ||
1919 | input_free_device(idev); | ||
1920 | return NULL; | ||
1921 | } | ||
1922 | |||
1923 | static struct input_dev *imon_init_touch(struct imon_context *ictx) | ||
1924 | { | ||
1925 | struct input_dev *touch; | ||
1926 | int ret; | ||
1927 | |||
1928 | touch = input_allocate_device(); | ||
1929 | if (!touch) { | ||
1930 | dev_err(ictx->dev, "touchscreen input dev allocation failed\n"); | ||
1931 | goto touch_alloc_failed; | ||
1932 | } | ||
1933 | |||
1934 | snprintf(ictx->name_touch, sizeof(ictx->name_touch), | ||
1935 | "iMON USB Touchscreen (%04x:%04x)", | ||
1936 | ictx->vendor, ictx->product); | ||
1937 | touch->name = ictx->name_touch; | ||
1938 | |||
1939 | usb_make_path(ictx->usbdev_intf1, ictx->phys_touch, | ||
1940 | sizeof(ictx->phys_touch)); | ||
1941 | strlcat(ictx->phys_touch, "/input2", sizeof(ictx->phys_touch)); | ||
1942 | touch->phys = ictx->phys_touch; | ||
1943 | |||
1944 | touch->evbit[0] = | ||
1945 | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); | ||
1946 | touch->keybit[BIT_WORD(BTN_TOUCH)] = | ||
1947 | BIT_MASK(BTN_TOUCH); | ||
1948 | input_set_abs_params(touch, ABS_X, | ||
1949 | 0x00, 0xfff, 0, 0); | ||
1950 | input_set_abs_params(touch, ABS_Y, | ||
1951 | 0x00, 0xfff, 0, 0); | ||
1952 | |||
1953 | input_set_drvdata(touch, ictx); | ||
1954 | |||
1955 | usb_to_input_id(ictx->usbdev_intf1, &touch->id); | ||
1956 | touch->dev.parent = ictx->dev; | ||
1957 | ret = input_register_device(touch); | ||
1958 | if (ret < 0) { | ||
1959 | dev_info(ictx->dev, "touchscreen input dev register failed\n"); | ||
1960 | goto touch_register_failed; | ||
1961 | } | ||
1962 | |||
1963 | return touch; | ||
1964 | |||
1965 | touch_register_failed: | ||
1966 | input_free_device(ictx->touch); | ||
1967 | |||
1968 | touch_alloc_failed: | ||
1969 | return NULL; | ||
1970 | } | ||
1971 | |||
1972 | static bool imon_find_endpoints(struct imon_context *ictx, | ||
1973 | struct usb_host_interface *iface_desc) | ||
1974 | { | ||
1975 | struct usb_endpoint_descriptor *ep; | ||
1976 | struct usb_endpoint_descriptor *rx_endpoint = NULL; | ||
1977 | struct usb_endpoint_descriptor *tx_endpoint = NULL; | ||
1978 | int ifnum = iface_desc->desc.bInterfaceNumber; | ||
1979 | int num_endpts = iface_desc->desc.bNumEndpoints; | ||
1980 | int i, ep_dir, ep_type; | ||
1981 | bool ir_ep_found = false; | ||
1982 | bool display_ep_found = false; | ||
1983 | bool tx_control = false; | ||
1984 | |||
1985 | /* | ||
1986 | * Scan the endpoint list and set: | ||
1987 | * first input endpoint = IR endpoint | ||
1988 | * first output endpoint = display endpoint | ||
1989 | */ | ||
1990 | for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) { | ||
1991 | ep = &iface_desc->endpoint[i].desc; | ||
1992 | ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK; | ||
1993 | ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; | ||
1994 | |||
1995 | if (!ir_ep_found && ep_dir == USB_DIR_IN && | ||
1996 | ep_type == USB_ENDPOINT_XFER_INT) { | ||
1997 | |||
1998 | rx_endpoint = ep; | ||
1999 | ir_ep_found = true; | ||
2000 | dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__); | ||
2001 | |||
2002 | } else if (!display_ep_found && ep_dir == USB_DIR_OUT && | ||
2003 | ep_type == USB_ENDPOINT_XFER_INT) { | ||
2004 | tx_endpoint = ep; | ||
2005 | display_ep_found = true; | ||
2006 | dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__); | ||
2007 | } | ||
2008 | } | ||
2009 | |||
2010 | if (ifnum == 0) { | ||
2011 | ictx->rx_endpoint_intf0 = rx_endpoint; | ||
2012 | /* | ||
2013 | * tx is used to send characters to lcd/vfd, associate RF | ||
2014 | * remotes, set IR protocol, and maybe more... | ||
2015 | */ | ||
2016 | ictx->tx_endpoint = tx_endpoint; | ||
2017 | } else { | ||
2018 | ictx->rx_endpoint_intf1 = rx_endpoint; | ||
2019 | } | ||
2020 | |||
2021 | /* | ||
2022 | * If we didn't find a display endpoint, this is probably one of the | ||
2023 | * newer iMON devices that use control urb instead of interrupt | ||
2024 | */ | ||
2025 | if (!display_ep_found) { | ||
2026 | tx_control = true; | ||
2027 | display_ep_found = true; | ||
2028 | dev_dbg(ictx->dev, "%s: device uses control endpoint, not " | ||
2029 | "interface OUT endpoint\n", __func__); | ||
2030 | } | ||
2031 | |||
2032 | /* | ||
2033 | * Some iMON receivers have no display. Unfortunately, it seems | ||
2034 | * that SoundGraph recycles device IDs between devices both with | ||
2035 | * and without... :\ | ||
2036 | */ | ||
2037 | if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) { | ||
2038 | display_ep_found = false; | ||
2039 | dev_dbg(ictx->dev, "%s: device has no display\n", __func__); | ||
2040 | } | ||
2041 | |||
2042 | /* | ||
2043 | * iMON Touch devices have a VGA touchscreen, but no "display", as | ||
2044 | * that refers to e.g. /dev/lcd0 (a character device LCD or VFD). | ||
2045 | */ | ||
2046 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | ||
2047 | display_ep_found = false; | ||
2048 | dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__); | ||
2049 | } | ||
2050 | |||
2051 | /* Input endpoint is mandatory */ | ||
2052 | if (!ir_ep_found) | ||
2053 | pr_err("no valid input (IR) endpoint found\n"); | ||
2054 | |||
2055 | ictx->tx_control = tx_control; | ||
2056 | |||
2057 | if (display_ep_found) | ||
2058 | ictx->display_supported = true; | ||
2059 | |||
2060 | return ir_ep_found; | ||
2061 | |||
2062 | } | ||
2063 | |||
2064 | static struct imon_context *imon_init_intf0(struct usb_interface *intf) | ||
2065 | { | ||
2066 | struct imon_context *ictx; | ||
2067 | struct urb *rx_urb; | ||
2068 | struct urb *tx_urb; | ||
2069 | struct device *dev = &intf->dev; | ||
2070 | struct usb_host_interface *iface_desc; | ||
2071 | int ret = -ENOMEM; | ||
2072 | |||
2073 | ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL); | ||
2074 | if (!ictx) { | ||
2075 | dev_err(dev, "%s: kzalloc failed for context", __func__); | ||
2076 | goto exit; | ||
2077 | } | ||
2078 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
2079 | if (!rx_urb) { | ||
2080 | dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__); | ||
2081 | goto rx_urb_alloc_failed; | ||
2082 | } | ||
2083 | tx_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
2084 | if (!tx_urb) { | ||
2085 | dev_err(dev, "%s: usb_alloc_urb failed for display urb", | ||
2086 | __func__); | ||
2087 | goto tx_urb_alloc_failed; | ||
2088 | } | ||
2089 | |||
2090 | mutex_init(&ictx->lock); | ||
2091 | spin_lock_init(&ictx->kc_lock); | ||
2092 | |||
2093 | mutex_lock(&ictx->lock); | ||
2094 | |||
2095 | ictx->dev = dev; | ||
2096 | ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf)); | ||
2097 | ictx->dev_present_intf0 = true; | ||
2098 | ictx->rx_urb_intf0 = rx_urb; | ||
2099 | ictx->tx_urb = tx_urb; | ||
2100 | ictx->rf_device = false; | ||
2101 | |||
2102 | ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor); | ||
2103 | ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct); | ||
2104 | |||
2105 | ret = -ENODEV; | ||
2106 | iface_desc = intf->cur_altsetting; | ||
2107 | if (!imon_find_endpoints(ictx, iface_desc)) { | ||
2108 | goto find_endpoint_failed; | ||
2109 | } | ||
2110 | |||
2111 | ictx->idev = imon_init_idev(ictx); | ||
2112 | if (!ictx->idev) { | ||
2113 | dev_err(dev, "%s: input device setup failed\n", __func__); | ||
2114 | goto idev_setup_failed; | ||
2115 | } | ||
2116 | |||
2117 | ictx->rdev = imon_init_rdev(ictx); | ||
2118 | if (!ictx->rdev) { | ||
2119 | dev_err(dev, "%s: rc device setup failed\n", __func__); | ||
2120 | goto rdev_setup_failed; | ||
2121 | } | ||
2122 | |||
2123 | usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, | ||
2124 | usb_rcvintpipe(ictx->usbdev_intf0, | ||
2125 | ictx->rx_endpoint_intf0->bEndpointAddress), | ||
2126 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | ||
2127 | usb_rx_callback_intf0, ictx, | ||
2128 | ictx->rx_endpoint_intf0->bInterval); | ||
2129 | |||
2130 | ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL); | ||
2131 | if (ret) { | ||
2132 | pr_err("usb_submit_urb failed for intf0 (%d)\n", ret); | ||
2133 | goto urb_submit_failed; | ||
2134 | } | ||
2135 | |||
2136 | return ictx; | ||
2137 | |||
2138 | urb_submit_failed: | ||
2139 | rc_unregister_device(ictx->rdev); | ||
2140 | rdev_setup_failed: | ||
2141 | input_unregister_device(ictx->idev); | ||
2142 | idev_setup_failed: | ||
2143 | find_endpoint_failed: | ||
2144 | mutex_unlock(&ictx->lock); | ||
2145 | usb_free_urb(tx_urb); | ||
2146 | tx_urb_alloc_failed: | ||
2147 | usb_free_urb(rx_urb); | ||
2148 | rx_urb_alloc_failed: | ||
2149 | kfree(ictx); | ||
2150 | exit: | ||
2151 | dev_err(dev, "unable to initialize intf0, err %d\n", ret); | ||
2152 | |||
2153 | return NULL; | ||
2154 | } | ||
2155 | |||
2156 | static struct imon_context *imon_init_intf1(struct usb_interface *intf, | ||
2157 | struct imon_context *ictx) | ||
2158 | { | ||
2159 | struct urb *rx_urb; | ||
2160 | struct usb_host_interface *iface_desc; | ||
2161 | int ret = -ENOMEM; | ||
2162 | |||
2163 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
2164 | if (!rx_urb) { | ||
2165 | pr_err("usb_alloc_urb failed for IR urb\n"); | ||
2166 | goto rx_urb_alloc_failed; | ||
2167 | } | ||
2168 | |||
2169 | mutex_lock(&ictx->lock); | ||
2170 | |||
2171 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | ||
2172 | init_timer(&ictx->ttimer); | ||
2173 | ictx->ttimer.data = (unsigned long)ictx; | ||
2174 | ictx->ttimer.function = imon_touch_display_timeout; | ||
2175 | } | ||
2176 | |||
2177 | ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf)); | ||
2178 | ictx->dev_present_intf1 = true; | ||
2179 | ictx->rx_urb_intf1 = rx_urb; | ||
2180 | |||
2181 | ret = -ENODEV; | ||
2182 | iface_desc = intf->cur_altsetting; | ||
2183 | if (!imon_find_endpoints(ictx, iface_desc)) | ||
2184 | goto find_endpoint_failed; | ||
2185 | |||
2186 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | ||
2187 | ictx->touch = imon_init_touch(ictx); | ||
2188 | if (!ictx->touch) | ||
2189 | goto touch_setup_failed; | ||
2190 | } else | ||
2191 | ictx->touch = NULL; | ||
2192 | |||
2193 | usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, | ||
2194 | usb_rcvintpipe(ictx->usbdev_intf1, | ||
2195 | ictx->rx_endpoint_intf1->bEndpointAddress), | ||
2196 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | ||
2197 | usb_rx_callback_intf1, ictx, | ||
2198 | ictx->rx_endpoint_intf1->bInterval); | ||
2199 | |||
2200 | ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL); | ||
2201 | |||
2202 | if (ret) { | ||
2203 | pr_err("usb_submit_urb failed for intf1 (%d)\n", ret); | ||
2204 | goto urb_submit_failed; | ||
2205 | } | ||
2206 | |||
2207 | return ictx; | ||
2208 | |||
2209 | urb_submit_failed: | ||
2210 | if (ictx->touch) | ||
2211 | input_unregister_device(ictx->touch); | ||
2212 | touch_setup_failed: | ||
2213 | find_endpoint_failed: | ||
2214 | mutex_unlock(&ictx->lock); | ||
2215 | usb_free_urb(rx_urb); | ||
2216 | rx_urb_alloc_failed: | ||
2217 | dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret); | ||
2218 | |||
2219 | return NULL; | ||
2220 | } | ||
2221 | |||
2222 | static void imon_init_display(struct imon_context *ictx, | ||
2223 | struct usb_interface *intf) | ||
2224 | { | ||
2225 | int ret; | ||
2226 | |||
2227 | dev_dbg(ictx->dev, "Registering iMON display with sysfs\n"); | ||
2228 | |||
2229 | /* set up sysfs entry for built-in clock */ | ||
2230 | ret = sysfs_create_group(&intf->dev.kobj, &imon_display_attr_group); | ||
2231 | if (ret) | ||
2232 | dev_err(ictx->dev, "Could not create display sysfs " | ||
2233 | "entries(%d)", ret); | ||
2234 | |||
2235 | if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) | ||
2236 | ret = usb_register_dev(intf, &imon_lcd_class); | ||
2237 | else | ||
2238 | ret = usb_register_dev(intf, &imon_vfd_class); | ||
2239 | if (ret) | ||
2240 | /* Not a fatal error, so ignore */ | ||
2241 | dev_info(ictx->dev, "could not get a minor number for " | ||
2242 | "display\n"); | ||
2243 | |||
2244 | } | ||
2245 | |||
2246 | /** | ||
2247 | * Callback function for USB core API: Probe | ||
2248 | */ | ||
2249 | static int __devinit imon_probe(struct usb_interface *interface, | ||
2250 | const struct usb_device_id *id) | ||
2251 | { | ||
2252 | struct usb_device *usbdev = NULL; | ||
2253 | struct usb_host_interface *iface_desc = NULL; | ||
2254 | struct usb_interface *first_if; | ||
2255 | struct device *dev = &interface->dev; | ||
2256 | int ifnum, code_length, sysfs_err; | ||
2257 | int ret = 0; | ||
2258 | struct imon_context *ictx = NULL; | ||
2259 | struct imon_context *first_if_ctx = NULL; | ||
2260 | u16 vendor, product; | ||
2261 | |||
2262 | code_length = BUF_CHUNK_SIZE * 8; | ||
2263 | |||
2264 | usbdev = usb_get_dev(interface_to_usbdev(interface)); | ||
2265 | iface_desc = interface->cur_altsetting; | ||
2266 | ifnum = iface_desc->desc.bInterfaceNumber; | ||
2267 | vendor = le16_to_cpu(usbdev->descriptor.idVendor); | ||
2268 | product = le16_to_cpu(usbdev->descriptor.idProduct); | ||
2269 | |||
2270 | dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n", | ||
2271 | __func__, vendor, product, ifnum); | ||
2272 | |||
2273 | /* prevent races probing devices w/multiple interfaces */ | ||
2274 | mutex_lock(&driver_lock); | ||
2275 | |||
2276 | first_if = usb_ifnum_to_if(usbdev, 0); | ||
2277 | first_if_ctx = usb_get_intfdata(first_if); | ||
2278 | |||
2279 | if (ifnum == 0) { | ||
2280 | ictx = imon_init_intf0(interface); | ||
2281 | if (!ictx) { | ||
2282 | pr_err("failed to initialize context!\n"); | ||
2283 | ret = -ENODEV; | ||
2284 | goto fail; | ||
2285 | } | ||
2286 | |||
2287 | } else { | ||
2288 | /* this is the secondary interface on the device */ | ||
2289 | ictx = imon_init_intf1(interface, first_if_ctx); | ||
2290 | if (!ictx) { | ||
2291 | pr_err("failed to attach to context!\n"); | ||
2292 | ret = -ENODEV; | ||
2293 | goto fail; | ||
2294 | } | ||
2295 | |||
2296 | } | ||
2297 | |||
2298 | usb_set_intfdata(interface, ictx); | ||
2299 | |||
2300 | if (ifnum == 0) { | ||
2301 | if (product == 0xffdc && ictx->rf_device) { | ||
2302 | sysfs_err = sysfs_create_group(&interface->dev.kobj, | ||
2303 | &imon_rf_attr_group); | ||
2304 | if (sysfs_err) | ||
2305 | pr_err("Could not create RF sysfs entries(%d)\n", | ||
2306 | sysfs_err); | ||
2307 | } | ||
2308 | |||
2309 | if (ictx->display_supported) | ||
2310 | imon_init_display(ictx, interface); | ||
2311 | } | ||
2312 | |||
2313 | dev_info(dev, "iMON device (%04x:%04x, intf%d) on " | ||
2314 | "usb<%d:%d> initialized\n", vendor, product, ifnum, | ||
2315 | usbdev->bus->busnum, usbdev->devnum); | ||
2316 | |||
2317 | mutex_unlock(&ictx->lock); | ||
2318 | mutex_unlock(&driver_lock); | ||
2319 | |||
2320 | return 0; | ||
2321 | |||
2322 | fail: | ||
2323 | mutex_unlock(&driver_lock); | ||
2324 | dev_err(dev, "unable to register, err %d\n", ret); | ||
2325 | |||
2326 | return ret; | ||
2327 | } | ||
2328 | |||
2329 | /** | ||
2330 | * Callback function for USB core API: disconnect | ||
2331 | */ | ||
2332 | static void __devexit imon_disconnect(struct usb_interface *interface) | ||
2333 | { | ||
2334 | struct imon_context *ictx; | ||
2335 | struct device *dev; | ||
2336 | int ifnum; | ||
2337 | |||
2338 | /* prevent races with multi-interface device probing and display_open */ | ||
2339 | mutex_lock(&driver_lock); | ||
2340 | |||
2341 | ictx = usb_get_intfdata(interface); | ||
2342 | dev = ictx->dev; | ||
2343 | ifnum = interface->cur_altsetting->desc.bInterfaceNumber; | ||
2344 | |||
2345 | mutex_lock(&ictx->lock); | ||
2346 | |||
2347 | /* | ||
2348 | * sysfs_remove_group is safe to call even if sysfs_create_group | ||
2349 | * hasn't been called | ||
2350 | */ | ||
2351 | sysfs_remove_group(&interface->dev.kobj, &imon_display_attr_group); | ||
2352 | sysfs_remove_group(&interface->dev.kobj, &imon_rf_attr_group); | ||
2353 | |||
2354 | usb_set_intfdata(interface, NULL); | ||
2355 | |||
2356 | /* Abort ongoing write */ | ||
2357 | if (ictx->tx.busy) { | ||
2358 | usb_kill_urb(ictx->tx_urb); | ||
2359 | complete_all(&ictx->tx.finished); | ||
2360 | } | ||
2361 | |||
2362 | if (ifnum == 0) { | ||
2363 | ictx->dev_present_intf0 = false; | ||
2364 | usb_kill_urb(ictx->rx_urb_intf0); | ||
2365 | input_unregister_device(ictx->idev); | ||
2366 | rc_unregister_device(ictx->rdev); | ||
2367 | if (ictx->display_supported) { | ||
2368 | if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) | ||
2369 | usb_deregister_dev(interface, &imon_lcd_class); | ||
2370 | else | ||
2371 | usb_deregister_dev(interface, &imon_vfd_class); | ||
2372 | } | ||
2373 | } else { | ||
2374 | ictx->dev_present_intf1 = false; | ||
2375 | usb_kill_urb(ictx->rx_urb_intf1); | ||
2376 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) | ||
2377 | input_unregister_device(ictx->touch); | ||
2378 | } | ||
2379 | |||
2380 | if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) { | ||
2381 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) | ||
2382 | del_timer_sync(&ictx->ttimer); | ||
2383 | mutex_unlock(&ictx->lock); | ||
2384 | if (!ictx->display_isopen) | ||
2385 | free_imon_context(ictx); | ||
2386 | } else | ||
2387 | mutex_unlock(&ictx->lock); | ||
2388 | |||
2389 | mutex_unlock(&driver_lock); | ||
2390 | |||
2391 | dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n", | ||
2392 | __func__, ifnum); | ||
2393 | } | ||
2394 | |||
2395 | static int imon_suspend(struct usb_interface *intf, pm_message_t message) | ||
2396 | { | ||
2397 | struct imon_context *ictx = usb_get_intfdata(intf); | ||
2398 | int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | ||
2399 | |||
2400 | if (ifnum == 0) | ||
2401 | usb_kill_urb(ictx->rx_urb_intf0); | ||
2402 | else | ||
2403 | usb_kill_urb(ictx->rx_urb_intf1); | ||
2404 | |||
2405 | return 0; | ||
2406 | } | ||
2407 | |||
2408 | static int imon_resume(struct usb_interface *intf) | ||
2409 | { | ||
2410 | int rc = 0; | ||
2411 | struct imon_context *ictx = usb_get_intfdata(intf); | ||
2412 | int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | ||
2413 | |||
2414 | if (ifnum == 0) { | ||
2415 | usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, | ||
2416 | usb_rcvintpipe(ictx->usbdev_intf0, | ||
2417 | ictx->rx_endpoint_intf0->bEndpointAddress), | ||
2418 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | ||
2419 | usb_rx_callback_intf0, ictx, | ||
2420 | ictx->rx_endpoint_intf0->bInterval); | ||
2421 | |||
2422 | rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); | ||
2423 | |||
2424 | } else { | ||
2425 | usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, | ||
2426 | usb_rcvintpipe(ictx->usbdev_intf1, | ||
2427 | ictx->rx_endpoint_intf1->bEndpointAddress), | ||
2428 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | ||
2429 | usb_rx_callback_intf1, ictx, | ||
2430 | ictx->rx_endpoint_intf1->bInterval); | ||
2431 | |||
2432 | rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); | ||
2433 | } | ||
2434 | |||
2435 | return rc; | ||
2436 | } | ||
2437 | |||
2438 | static int __init imon_init(void) | ||
2439 | { | ||
2440 | int rc; | ||
2441 | |||
2442 | rc = usb_register(&imon_driver); | ||
2443 | if (rc) { | ||
2444 | pr_err("usb register failed(%d)\n", rc); | ||
2445 | rc = -ENODEV; | ||
2446 | } | ||
2447 | |||
2448 | return rc; | ||
2449 | } | ||
2450 | |||
2451 | static void __exit imon_exit(void) | ||
2452 | { | ||
2453 | usb_deregister(&imon_driver); | ||
2454 | } | ||
2455 | |||
2456 | module_init(imon_init); | ||
2457 | module_exit(imon_exit); | ||