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21677cfc JW |
1 | /* |
2 | * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD | |
3 | * | |
693508df | 4 | * Copyright(C) 2010 Jarod Wilson <jarod@wilsonet.com> |
21677cfc JW |
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 | ||
e2302501 JP |
29 | #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__ |
30 | ||
21677cfc JW |
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> | |
47a09b08 | 37 | #include <linux/ratelimit.h> |
21677cfc JW |
38 | |
39 | #include <linux/input.h> | |
40 | #include <linux/usb.h> | |
41 | #include <linux/usb/input.h> | |
6bda9644 | 42 | #include <media/rc-core.h> |
21677cfc JW |
43 | |
44 | #include <linux/time.h> | |
45 | #include <linux/timer.h> | |
46 | ||
47 | #define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>" | |
48 | #define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display" | |
49 | #define MOD_NAME "imon" | |
8791d63a | 50 | #define MOD_VERSION "0.9.4" |
21677cfc JW |
51 | |
52 | #define DISPLAY_MINOR_BASE 144 | |
53 | #define DEVICE_NAME "lcd%d" | |
54 | ||
55 | #define BUF_CHUNK_SIZE 8 | |
56 | #define BUF_SIZE 128 | |
57 | ||
58 | #define BIT_DURATION 250 /* each bit received is 250us */ | |
59 | ||
60 | #define IMON_CLOCK_ENABLE_PACKETS 2 | |
21677cfc JW |
61 | |
62 | /*** P R O T O T Y P E S ***/ | |
63 | ||
64 | /* USB Callback prototypes */ | |
65 | static int imon_probe(struct usb_interface *interface, | |
66 | const struct usb_device_id *id); | |
67 | static void imon_disconnect(struct usb_interface *interface); | |
68 | static void usb_rx_callback_intf0(struct urb *urb); | |
69 | static void usb_rx_callback_intf1(struct urb *urb); | |
70 | static void usb_tx_callback(struct urb *urb); | |
71 | ||
72 | /* suspend/resume support */ | |
73 | static int imon_resume(struct usb_interface *intf); | |
74 | static int imon_suspend(struct usb_interface *intf, pm_message_t message); | |
75 | ||
76 | /* Display file_operations function prototypes */ | |
77 | static int display_open(struct inode *inode, struct file *file); | |
78 | static int display_close(struct inode *inode, struct file *file); | |
79 | ||
80 | /* VFD write operation */ | |
d6740d86 | 81 | static ssize_t vfd_write(struct file *file, const char __user *buf, |
21677cfc JW |
82 | size_t n_bytes, loff_t *pos); |
83 | ||
84 | /* LCD file_operations override function prototypes */ | |
d6740d86 | 85 | static ssize_t lcd_write(struct file *file, const char __user *buf, |
21677cfc JW |
86 | size_t n_bytes, loff_t *pos); |
87 | ||
88 | /*** G L O B A L S ***/ | |
89 | ||
0d8053f2 UE |
90 | struct imon_panel_key_table { |
91 | u64 hw_code; | |
92 | u32 keycode; | |
93 | }; | |
94 | ||
95 | struct imon_usb_dev_descr { | |
96 | __u16 flags; | |
97 | #define IMON_NO_FLAGS 0 | |
98 | #define IMON_NEED_20MS_PKT_DELAY 1 | |
99 | struct imon_panel_key_table key_table[]; | |
100 | }; | |
101 | ||
21677cfc JW |
102 | struct imon_context { |
103 | struct device *dev; | |
21677cfc JW |
104 | /* Newer devices have two interfaces */ |
105 | struct usb_device *usbdev_intf0; | |
106 | struct usb_device *usbdev_intf1; | |
107 | ||
108 | bool display_supported; /* not all controllers do */ | |
109 | bool display_isopen; /* display port has been opened */ | |
bbe4690f | 110 | bool rf_device; /* true if iMON 2.4G LT/DT RF device */ |
21677cfc JW |
111 | bool rf_isassociating; /* RF remote associating */ |
112 | bool dev_present_intf0; /* USB device presence, interface 0 */ | |
113 | bool dev_present_intf1; /* USB device presence, interface 1 */ | |
114 | ||
115 | struct mutex lock; /* to lock this object */ | |
116 | wait_queue_head_t remove_ok; /* For unexpected USB disconnects */ | |
117 | ||
118 | struct usb_endpoint_descriptor *rx_endpoint_intf0; | |
119 | struct usb_endpoint_descriptor *rx_endpoint_intf1; | |
120 | struct usb_endpoint_descriptor *tx_endpoint; | |
121 | struct urb *rx_urb_intf0; | |
122 | struct urb *rx_urb_intf1; | |
123 | struct urb *tx_urb; | |
124 | bool tx_control; | |
125 | unsigned char usb_rx_buf[8]; | |
126 | unsigned char usb_tx_buf[8]; | |
26ccbec4 | 127 | unsigned int send_packet_delay; |
21677cfc JW |
128 | |
129 | struct tx_t { | |
130 | unsigned char data_buf[35]; /* user data buffer */ | |
131 | struct completion finished; /* wait for write to finish */ | |
132 | bool busy; /* write in progress */ | |
133 | int status; /* status of tx completion */ | |
134 | } tx; | |
135 | ||
136 | u16 vendor; /* usb vendor ID */ | |
137 | u16 product; /* usb product ID */ | |
138 | ||
d8b4b582 | 139 | struct rc_dev *rdev; /* rc-core device for remote */ |
eaf2bcc9 | 140 | struct input_dev *idev; /* input device for panel & IR mouse */ |
21677cfc JW |
141 | struct input_dev *touch; /* input device for touchscreen */ |
142 | ||
693508df | 143 | spinlock_t kc_lock; /* make sure we get keycodes right */ |
21677cfc JW |
144 | u32 kc; /* current input keycode */ |
145 | u32 last_keycode; /* last reported input keycode */ | |
eaf2bcc9 DH |
146 | u32 rc_scancode; /* the computed remote scancode */ |
147 | u8 rc_toggle; /* the computed remote toggle bit */ | |
52b66144 | 148 | u64 rc_type; /* iMON or MCE (RC6) IR protocol? */ |
21677cfc JW |
149 | bool release_code; /* some keys send a release code */ |
150 | ||
151 | u8 display_type; /* store the display type */ | |
152 | bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */ | |
153 | ||
eaf2bcc9 DH |
154 | char name_rdev[128]; /* rc input device name */ |
155 | char phys_rdev[64]; /* rc input device phys path */ | |
156 | ||
21677cfc JW |
157 | char name_idev[128]; /* input device name */ |
158 | char phys_idev[64]; /* input device phys path */ | |
21677cfc JW |
159 | |
160 | char name_touch[128]; /* touch screen name */ | |
161 | char phys_touch[64]; /* touch screen phys path */ | |
162 | struct timer_list ttimer; /* touch screen timer */ | |
163 | int touch_x; /* x coordinate on touchscreen */ | |
164 | int touch_y; /* y coordinate on touchscreen */ | |
0d8053f2 UE |
165 | struct imon_usb_dev_descr *dev_descr; /* device description with key |
166 | table for front panels */ | |
21677cfc JW |
167 | }; |
168 | ||
169 | #define TOUCH_TIMEOUT (HZ/30) | |
21677cfc JW |
170 | |
171 | /* vfd character device file operations */ | |
172 | static const struct file_operations vfd_fops = { | |
173 | .owner = THIS_MODULE, | |
174 | .open = &display_open, | |
175 | .write = &vfd_write, | |
6038f373 AB |
176 | .release = &display_close, |
177 | .llseek = noop_llseek, | |
21677cfc JW |
178 | }; |
179 | ||
180 | /* lcd character device file operations */ | |
181 | static const struct file_operations lcd_fops = { | |
182 | .owner = THIS_MODULE, | |
183 | .open = &display_open, | |
184 | .write = &lcd_write, | |
6038f373 AB |
185 | .release = &display_close, |
186 | .llseek = noop_llseek, | |
21677cfc JW |
187 | }; |
188 | ||
189 | enum { | |
190 | IMON_DISPLAY_TYPE_AUTO = 0, | |
191 | IMON_DISPLAY_TYPE_VFD = 1, | |
192 | IMON_DISPLAY_TYPE_LCD = 2, | |
193 | IMON_DISPLAY_TYPE_VGA = 3, | |
194 | IMON_DISPLAY_TYPE_NONE = 4, | |
195 | }; | |
196 | ||
21677cfc JW |
197 | enum { |
198 | IMON_KEY_IMON = 0, | |
199 | IMON_KEY_MCE = 1, | |
200 | IMON_KEY_PANEL = 2, | |
201 | }; | |
202 | ||
0d8053f2 UE |
203 | static struct usb_class_driver imon_vfd_class = { |
204 | .name = DEVICE_NAME, | |
205 | .fops = &vfd_fops, | |
206 | .minor_base = DISPLAY_MINOR_BASE, | |
207 | }; | |
208 | ||
209 | static struct usb_class_driver imon_lcd_class = { | |
210 | .name = DEVICE_NAME, | |
211 | .fops = &lcd_fops, | |
212 | .minor_base = DISPLAY_MINOR_BASE, | |
213 | }; | |
214 | ||
215 | /* imon receiver front panel/knob key table */ | |
216 | static const struct imon_usb_dev_descr imon_default_table = { | |
217 | .flags = IMON_NO_FLAGS, | |
218 | .key_table = { | |
219 | { 0x000000000f00ffeell, KEY_MEDIA }, /* Go */ | |
220 | { 0x000000001200ffeell, KEY_UP }, | |
221 | { 0x000000001300ffeell, KEY_DOWN }, | |
222 | { 0x000000001400ffeell, KEY_LEFT }, | |
223 | { 0x000000001500ffeell, KEY_RIGHT }, | |
224 | { 0x000000001600ffeell, KEY_ENTER }, | |
225 | { 0x000000001700ffeell, KEY_ESC }, | |
226 | { 0x000000001f00ffeell, KEY_AUDIO }, | |
227 | { 0x000000002000ffeell, KEY_VIDEO }, | |
228 | { 0x000000002100ffeell, KEY_CAMERA }, | |
229 | { 0x000000002700ffeell, KEY_DVD }, | |
230 | { 0x000000002300ffeell, KEY_TV }, | |
231 | { 0x000000002b00ffeell, KEY_EXIT }, | |
232 | { 0x000000002c00ffeell, KEY_SELECT }, | |
233 | { 0x000000002d00ffeell, KEY_MENU }, | |
234 | { 0x000000000500ffeell, KEY_PREVIOUS }, | |
235 | { 0x000000000700ffeell, KEY_REWIND }, | |
236 | { 0x000000000400ffeell, KEY_STOP }, | |
237 | { 0x000000003c00ffeell, KEY_PLAYPAUSE }, | |
238 | { 0x000000000800ffeell, KEY_FASTFORWARD }, | |
239 | { 0x000000000600ffeell, KEY_NEXT }, | |
240 | { 0x000000010000ffeell, KEY_RIGHT }, | |
241 | { 0x000001000000ffeell, KEY_LEFT }, | |
242 | { 0x000000003d00ffeell, KEY_SELECT }, | |
243 | { 0x000100000000ffeell, KEY_VOLUMEUP }, | |
244 | { 0x010000000000ffeell, KEY_VOLUMEDOWN }, | |
245 | { 0x000000000100ffeell, KEY_MUTE }, | |
246 | /* 0xffdc iMON MCE VFD */ | |
247 | { 0x00010000ffffffeell, KEY_VOLUMEUP }, | |
248 | { 0x01000000ffffffeell, KEY_VOLUMEDOWN }, | |
249 | { 0x00000001ffffffeell, KEY_MUTE }, | |
250 | { 0x0000000fffffffeell, KEY_MEDIA }, | |
251 | { 0x00000012ffffffeell, KEY_UP }, | |
252 | { 0x00000013ffffffeell, KEY_DOWN }, | |
253 | { 0x00000014ffffffeell, KEY_LEFT }, | |
254 | { 0x00000015ffffffeell, KEY_RIGHT }, | |
255 | { 0x00000016ffffffeell, KEY_ENTER }, | |
256 | { 0x00000017ffffffeell, KEY_ESC }, | |
257 | /* iMON Knob values */ | |
258 | { 0x000100ffffffffeell, KEY_VOLUMEUP }, | |
259 | { 0x010000ffffffffeell, KEY_VOLUMEDOWN }, | |
260 | { 0x000008ffffffffeell, KEY_MUTE }, | |
261 | { 0, KEY_RESERVED }, | |
262 | } | |
263 | }; | |
264 | ||
265 | static const struct imon_usb_dev_descr imon_OEM_VFD = { | |
266 | .flags = IMON_NEED_20MS_PKT_DELAY, | |
267 | .key_table = { | |
268 | { 0x000000000f00ffeell, KEY_MEDIA }, /* Go */ | |
269 | { 0x000000001200ffeell, KEY_UP }, | |
270 | { 0x000000001300ffeell, KEY_DOWN }, | |
271 | { 0x000000001400ffeell, KEY_LEFT }, | |
272 | { 0x000000001500ffeell, KEY_RIGHT }, | |
273 | { 0x000000001600ffeell, KEY_ENTER }, | |
274 | { 0x000000001700ffeell, KEY_ESC }, | |
275 | { 0x000000001f00ffeell, KEY_AUDIO }, | |
276 | { 0x000000002b00ffeell, KEY_EXIT }, | |
277 | { 0x000000002c00ffeell, KEY_SELECT }, | |
278 | { 0x000000002d00ffeell, KEY_MENU }, | |
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 }, | |
291 | /* 0xffdc iMON MCE VFD */ | |
292 | { 0x00010000ffffffeell, KEY_VOLUMEUP }, | |
293 | { 0x01000000ffffffeell, KEY_VOLUMEDOWN }, | |
294 | { 0x00000001ffffffeell, KEY_MUTE }, | |
295 | { 0x0000000fffffffeell, KEY_MEDIA }, | |
296 | { 0x00000012ffffffeell, KEY_UP }, | |
297 | { 0x00000013ffffffeell, KEY_DOWN }, | |
298 | { 0x00000014ffffffeell, KEY_LEFT }, | |
299 | { 0x00000015ffffffeell, KEY_RIGHT }, | |
300 | { 0x00000016ffffffeell, KEY_ENTER }, | |
301 | { 0x00000017ffffffeell, KEY_ESC }, | |
302 | /* iMON Knob values */ | |
303 | { 0x000100ffffffffeell, KEY_VOLUMEUP }, | |
304 | { 0x010000ffffffffeell, KEY_VOLUMEDOWN }, | |
305 | { 0x000008ffffffffeell, KEY_MUTE }, | |
306 | { 0, KEY_RESERVED }, | |
307 | } | |
26ccbec4 KB |
308 | }; |
309 | ||
7b5fc071 UE |
310 | /* imon receiver front panel/knob key table for DH102*/ |
311 | static const struct imon_usb_dev_descr imon_DH102 = { | |
312 | .flags = IMON_NO_FLAGS, | |
313 | .key_table = { | |
314 | { 0x000100000000ffeell, KEY_VOLUMEUP }, | |
315 | { 0x010000000000ffeell, KEY_VOLUMEDOWN }, | |
316 | { 0x000000010000ffeell, KEY_MUTE }, | |
317 | { 0x0000000f0000ffeell, KEY_MEDIA }, | |
318 | { 0x000000120000ffeell, KEY_UP }, | |
319 | { 0x000000130000ffeell, KEY_DOWN }, | |
320 | { 0x000000140000ffeell, KEY_LEFT }, | |
321 | { 0x000000150000ffeell, KEY_RIGHT }, | |
322 | { 0x000000160000ffeell, KEY_ENTER }, | |
323 | { 0x000000170000ffeell, KEY_ESC }, | |
324 | { 0x0000002b0000ffeell, KEY_EXIT }, | |
325 | { 0x0000002c0000ffeell, KEY_SELECT }, | |
326 | { 0x0000002d0000ffeell, KEY_MENU }, | |
327 | { 0, KEY_RESERVED } | |
328 | } | |
329 | }; | |
330 | ||
21677cfc JW |
331 | /* |
332 | * USB Device ID for iMON USB Control Boards | |
333 | * | |
334 | * The Windows drivers contain 6 different inf files, more or less one for | |
335 | * each new device until the 0x0034-0x0046 devices, which all use the same | |
336 | * driver. Some of the devices in the 34-46 range haven't been definitively | |
337 | * identified yet. Early devices have either a TriGem Computer, Inc. or a | |
338 | * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later | |
339 | * devices use the SoundGraph vendor ID (0x15c2). This driver only supports | |
340 | * the ffdc and later devices, which do onboard decoding. | |
341 | */ | |
342 | static struct usb_device_id imon_usb_id_table[] = { | |
343 | /* | |
344 | * Several devices with this same device ID, all use iMON_PAD.inf | |
345 | * SoundGraph iMON PAD (IR & VFD) | |
346 | * SoundGraph iMON PAD (IR & LCD) | |
347 | * SoundGraph iMON Knob (IR only) | |
348 | */ | |
0d8053f2 UE |
349 | { USB_DEVICE(0x15c2, 0xffdc), |
350 | .driver_info = (unsigned long)&imon_default_table }, | |
21677cfc JW |
351 | |
352 | /* | |
353 | * Newer devices, all driven by the latest iMON Windows driver, full | |
354 | * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2' | |
355 | * Need user input to fill in details on unknown devices. | |
356 | */ | |
357 | /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */ | |
0d8053f2 | 358 | { USB_DEVICE(0x15c2, 0x0034), |
7b5fc071 | 359 | .driver_info = (unsigned long)&imon_DH102 }, |
21677cfc | 360 | /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */ |
0d8053f2 UE |
361 | { USB_DEVICE(0x15c2, 0x0035), |
362 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 363 | /* SoundGraph iMON OEM VFD (IR & VFD) */ |
0d8053f2 UE |
364 | { USB_DEVICE(0x15c2, 0x0036), |
365 | .driver_info = (unsigned long)&imon_OEM_VFD }, | |
21677cfc | 366 | /* device specifics unknown */ |
0d8053f2 UE |
367 | { USB_DEVICE(0x15c2, 0x0037), |
368 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 369 | /* SoundGraph iMON OEM LCD (IR & LCD) */ |
0d8053f2 UE |
370 | { USB_DEVICE(0x15c2, 0x0038), |
371 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 372 | /* SoundGraph iMON UltraBay (IR & LCD) */ |
0d8053f2 UE |
373 | { USB_DEVICE(0x15c2, 0x0039), |
374 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 375 | /* device specifics unknown */ |
0d8053f2 UE |
376 | { USB_DEVICE(0x15c2, 0x003a), |
377 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 378 | /* device specifics unknown */ |
0d8053f2 UE |
379 | { USB_DEVICE(0x15c2, 0x003b), |
380 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 381 | /* SoundGraph iMON OEM Inside (IR only) */ |
0d8053f2 UE |
382 | { USB_DEVICE(0x15c2, 0x003c), |
383 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 384 | /* device specifics unknown */ |
0d8053f2 UE |
385 | { USB_DEVICE(0x15c2, 0x003d), |
386 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 387 | /* device specifics unknown */ |
0d8053f2 UE |
388 | { USB_DEVICE(0x15c2, 0x003e), |
389 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 390 | /* device specifics unknown */ |
0d8053f2 UE |
391 | { USB_DEVICE(0x15c2, 0x003f), |
392 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 393 | /* device specifics unknown */ |
0d8053f2 UE |
394 | { USB_DEVICE(0x15c2, 0x0040), |
395 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 396 | /* SoundGraph iMON MINI (IR only) */ |
0d8053f2 UE |
397 | { USB_DEVICE(0x15c2, 0x0041), |
398 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 399 | /* Antec Veris Multimedia Station EZ External (IR only) */ |
0d8053f2 UE |
400 | { USB_DEVICE(0x15c2, 0x0042), |
401 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 402 | /* Antec Veris Multimedia Station Basic Internal (IR only) */ |
0d8053f2 UE |
403 | { USB_DEVICE(0x15c2, 0x0043), |
404 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 405 | /* Antec Veris Multimedia Station Elite (IR & VFD) */ |
0d8053f2 UE |
406 | { USB_DEVICE(0x15c2, 0x0044), |
407 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 408 | /* Antec Veris Multimedia Station Premiere (IR & LCD) */ |
0d8053f2 UE |
409 | { USB_DEVICE(0x15c2, 0x0045), |
410 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc | 411 | /* device specifics unknown */ |
0d8053f2 UE |
412 | { USB_DEVICE(0x15c2, 0x0046), |
413 | .driver_info = (unsigned long)&imon_default_table}, | |
21677cfc JW |
414 | {} |
415 | }; | |
416 | ||
417 | /* USB Device data */ | |
418 | static struct usb_driver imon_driver = { | |
419 | .name = MOD_NAME, | |
420 | .probe = imon_probe, | |
4c62e976 | 421 | .disconnect = imon_disconnect, |
21677cfc JW |
422 | .suspend = imon_suspend, |
423 | .resume = imon_resume, | |
424 | .id_table = imon_usb_id_table, | |
425 | }; | |
426 | ||
21677cfc JW |
427 | /* to prevent races between open() and disconnect(), probing, etc */ |
428 | static DEFINE_MUTEX(driver_lock); | |
429 | ||
430 | /* Module bookkeeping bits */ | |
431 | MODULE_AUTHOR(MOD_AUTHOR); | |
432 | MODULE_DESCRIPTION(MOD_DESC); | |
433 | MODULE_VERSION(MOD_VERSION); | |
434 | MODULE_LICENSE("GPL"); | |
435 | MODULE_DEVICE_TABLE(usb, imon_usb_id_table); | |
436 | ||
437 | static bool debug; | |
438 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
6aa209e4 | 439 | MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes (default: no)"); |
21677cfc JW |
440 | |
441 | /* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */ | |
442 | static int display_type; | |
443 | module_param(display_type, int, S_IRUGO); | |
444 | MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, " | |
445 | "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)"); | |
446 | ||
6718e8ad JW |
447 | static int pad_stabilize = 1; |
448 | module_param(pad_stabilize, int, S_IRUGO | S_IWUSR); | |
449 | MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD " | |
450 | "presses in arrow key mode. 0=disable, 1=enable (default)."); | |
21677cfc JW |
451 | |
452 | /* | |
453 | * In certain use cases, mouse mode isn't really helpful, and could actually | |
454 | * cause confusion, so allow disabling it when the IR device is open. | |
455 | */ | |
456 | static bool nomouse; | |
457 | module_param(nomouse, bool, S_IRUGO | S_IWUSR); | |
458 | MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is " | |
459 | "open. 0=don't disable, 1=disable. (default: don't disable)"); | |
460 | ||
461 | /* threshold at which a pad push registers as an arrow key in kbd mode */ | |
462 | static int pad_thresh; | |
463 | module_param(pad_thresh, int, S_IRUGO | S_IWUSR); | |
464 | MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an " | |
465 | "arrow key in kbd mode (default: 28)"); | |
466 | ||
467 | ||
468 | static void free_imon_context(struct imon_context *ictx) | |
469 | { | |
470 | struct device *dev = ictx->dev; | |
471 | ||
472 | usb_free_urb(ictx->tx_urb); | |
473 | usb_free_urb(ictx->rx_urb_intf0); | |
474 | usb_free_urb(ictx->rx_urb_intf1); | |
475 | kfree(ictx); | |
476 | ||
477 | dev_dbg(dev, "%s: iMON context freed\n", __func__); | |
478 | } | |
479 | ||
480 | /** | |
481 | * Called when the Display device (e.g. /dev/lcd0) | |
482 | * is opened by the application. | |
483 | */ | |
484 | static int display_open(struct inode *inode, struct file *file) | |
485 | { | |
486 | struct usb_interface *interface; | |
487 | struct imon_context *ictx = NULL; | |
488 | int subminor; | |
489 | int retval = 0; | |
490 | ||
491 | /* prevent races with disconnect */ | |
492 | mutex_lock(&driver_lock); | |
493 | ||
494 | subminor = iminor(inode); | |
495 | interface = usb_find_interface(&imon_driver, subminor); | |
496 | if (!interface) { | |
e2302501 | 497 | pr_err("could not find interface for minor %d\n", subminor); |
21677cfc JW |
498 | retval = -ENODEV; |
499 | goto exit; | |
500 | } | |
501 | ictx = usb_get_intfdata(interface); | |
502 | ||
503 | if (!ictx) { | |
e2302501 | 504 | pr_err("no context found for minor %d\n", subminor); |
21677cfc JW |
505 | retval = -ENODEV; |
506 | goto exit; | |
507 | } | |
508 | ||
509 | mutex_lock(&ictx->lock); | |
510 | ||
511 | if (!ictx->display_supported) { | |
e2302501 | 512 | pr_err("display not supported by device\n"); |
21677cfc JW |
513 | retval = -ENODEV; |
514 | } else if (ictx->display_isopen) { | |
e2302501 | 515 | pr_err("display port is already open\n"); |
21677cfc JW |
516 | retval = -EBUSY; |
517 | } else { | |
f789bf40 | 518 | ictx->display_isopen = true; |
21677cfc JW |
519 | file->private_data = ictx; |
520 | dev_dbg(ictx->dev, "display port opened\n"); | |
521 | } | |
522 | ||
523 | mutex_unlock(&ictx->lock); | |
524 | ||
525 | exit: | |
526 | mutex_unlock(&driver_lock); | |
527 | return retval; | |
528 | } | |
529 | ||
530 | /** | |
531 | * Called when the display device (e.g. /dev/lcd0) | |
532 | * is closed by the application. | |
533 | */ | |
534 | static int display_close(struct inode *inode, struct file *file) | |
535 | { | |
536 | struct imon_context *ictx = NULL; | |
537 | int retval = 0; | |
538 | ||
abf84383 | 539 | ictx = file->private_data; |
21677cfc JW |
540 | |
541 | if (!ictx) { | |
e2302501 | 542 | pr_err("no context for device\n"); |
21677cfc JW |
543 | return -ENODEV; |
544 | } | |
545 | ||
546 | mutex_lock(&ictx->lock); | |
547 | ||
548 | if (!ictx->display_supported) { | |
e2302501 | 549 | pr_err("display not supported by device\n"); |
21677cfc JW |
550 | retval = -ENODEV; |
551 | } else if (!ictx->display_isopen) { | |
e2302501 | 552 | pr_err("display is not open\n"); |
21677cfc JW |
553 | retval = -EIO; |
554 | } else { | |
f789bf40 | 555 | ictx->display_isopen = false; |
21677cfc | 556 | dev_dbg(ictx->dev, "display port closed\n"); |
21677cfc JW |
557 | } |
558 | ||
559 | mutex_unlock(&ictx->lock); | |
560 | return retval; | |
561 | } | |
562 | ||
563 | /** | |
23ef710e JW |
564 | * Sends a packet to the device -- this function must be called with |
565 | * ictx->lock held, or its unlock/lock sequence while waiting for tx | |
566 | * to complete can/will lead to a deadlock. | |
21677cfc JW |
567 | */ |
568 | static int send_packet(struct imon_context *ictx) | |
569 | { | |
570 | unsigned int pipe; | |
571 | unsigned long timeout; | |
572 | int interval = 0; | |
573 | int retval = 0; | |
574 | struct usb_ctrlrequest *control_req = NULL; | |
575 | ||
576 | /* Check if we need to use control or interrupt urb */ | |
577 | if (!ictx->tx_control) { | |
578 | pipe = usb_sndintpipe(ictx->usbdev_intf0, | |
579 | ictx->tx_endpoint->bEndpointAddress); | |
580 | interval = ictx->tx_endpoint->bInterval; | |
581 | ||
582 | usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe, | |
583 | ictx->usb_tx_buf, | |
584 | sizeof(ictx->usb_tx_buf), | |
585 | usb_tx_callback, ictx, interval); | |
586 | ||
587 | ictx->tx_urb->actual_length = 0; | |
588 | } else { | |
589 | /* fill request into kmalloc'ed space: */ | |
590 | control_req = kmalloc(sizeof(struct usb_ctrlrequest), | |
591 | GFP_KERNEL); | |
592 | if (control_req == NULL) | |
593 | return -ENOMEM; | |
594 | ||
595 | /* setup packet is '21 09 0200 0001 0008' */ | |
596 | control_req->bRequestType = 0x21; | |
597 | control_req->bRequest = 0x09; | |
598 | control_req->wValue = cpu_to_le16(0x0200); | |
599 | control_req->wIndex = cpu_to_le16(0x0001); | |
600 | control_req->wLength = cpu_to_le16(0x0008); | |
601 | ||
602 | /* control pipe is endpoint 0x00 */ | |
603 | pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0); | |
604 | ||
605 | /* build the control urb */ | |
606 | usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0, | |
607 | pipe, (unsigned char *)control_req, | |
608 | ictx->usb_tx_buf, | |
609 | sizeof(ictx->usb_tx_buf), | |
610 | usb_tx_callback, ictx); | |
611 | ictx->tx_urb->actual_length = 0; | |
612 | } | |
613 | ||
614 | init_completion(&ictx->tx.finished); | |
f789bf40 | 615 | ictx->tx.busy = true; |
21677cfc JW |
616 | smp_rmb(); /* ensure later readers know we're busy */ |
617 | ||
618 | retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL); | |
619 | if (retval) { | |
f789bf40 | 620 | ictx->tx.busy = false; |
21677cfc | 621 | smp_rmb(); /* ensure later readers know we're not busy */ |
47a09b08 | 622 | pr_err_ratelimited("error submitting urb(%d)\n", retval); |
21677cfc JW |
623 | } else { |
624 | /* Wait for transmission to complete (or abort) */ | |
625 | mutex_unlock(&ictx->lock); | |
626 | retval = wait_for_completion_interruptible( | |
627 | &ictx->tx.finished); | |
5f3f254f KB |
628 | if (retval) { |
629 | usb_kill_urb(ictx->tx_urb); | |
47a09b08 | 630 | pr_err_ratelimited("task interrupted\n"); |
5f3f254f | 631 | } |
21677cfc JW |
632 | mutex_lock(&ictx->lock); |
633 | ||
634 | retval = ictx->tx.status; | |
635 | if (retval) | |
47a09b08 | 636 | pr_err_ratelimited("packet tx failed (%d)\n", retval); |
21677cfc JW |
637 | } |
638 | ||
639 | kfree(control_req); | |
640 | ||
641 | /* | |
26ccbec4 | 642 | * Induce a mandatory delay before returning, as otherwise, |
21677cfc JW |
643 | * send_packet can get called so rapidly as to overwhelm the device, |
644 | * particularly on faster systems and/or those with quirky usb. | |
645 | */ | |
26ccbec4 KB |
646 | timeout = msecs_to_jiffies(ictx->send_packet_delay); |
647 | set_current_state(TASK_INTERRUPTIBLE); | |
21677cfc JW |
648 | schedule_timeout(timeout); |
649 | ||
650 | return retval; | |
651 | } | |
652 | ||
653 | /** | |
654 | * Sends an associate packet to the iMON 2.4G. | |
655 | * | |
656 | * This might not be such a good idea, since it has an id collision with | |
657 | * some versions of the "IR & VFD" combo. The only way to determine if it | |
658 | * is an RF version is to look at the product description string. (Which | |
659 | * we currently do not fetch). | |
660 | */ | |
661 | static int send_associate_24g(struct imon_context *ictx) | |
662 | { | |
663 | int retval; | |
664 | const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00, | |
665 | 0x00, 0x00, 0x00, 0x20 }; | |
666 | ||
667 | if (!ictx) { | |
e2302501 | 668 | pr_err("no context for device\n"); |
21677cfc JW |
669 | return -ENODEV; |
670 | } | |
671 | ||
672 | if (!ictx->dev_present_intf0) { | |
e2302501 | 673 | pr_err("no iMON device present\n"); |
21677cfc JW |
674 | return -ENODEV; |
675 | } | |
676 | ||
677 | memcpy(ictx->usb_tx_buf, packet, sizeof(packet)); | |
678 | retval = send_packet(ictx); | |
679 | ||
680 | return retval; | |
681 | } | |
682 | ||
683 | /** | |
684 | * Sends packets to setup and show clock on iMON display | |
685 | * | |
686 | * Arguments: year - last 2 digits of year, month - 1..12, | |
687 | * day - 1..31, dow - day of the week (0-Sun...6-Sat), | |
688 | * hour - 0..23, minute - 0..59, second - 0..59 | |
689 | */ | |
690 | static int send_set_imon_clock(struct imon_context *ictx, | |
691 | unsigned int year, unsigned int month, | |
692 | unsigned int day, unsigned int dow, | |
693 | unsigned int hour, unsigned int minute, | |
694 | unsigned int second) | |
695 | { | |
696 | unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8]; | |
697 | int retval = 0; | |
698 | int i; | |
699 | ||
700 | if (!ictx) { | |
e2302501 | 701 | pr_err("no context for device\n"); |
21677cfc JW |
702 | return -ENODEV; |
703 | } | |
704 | ||
705 | switch (ictx->display_type) { | |
706 | case IMON_DISPLAY_TYPE_LCD: | |
707 | clock_enable_pkt[0][0] = 0x80; | |
708 | clock_enable_pkt[0][1] = year; | |
709 | clock_enable_pkt[0][2] = month-1; | |
710 | clock_enable_pkt[0][3] = day; | |
711 | clock_enable_pkt[0][4] = hour; | |
712 | clock_enable_pkt[0][5] = minute; | |
713 | clock_enable_pkt[0][6] = second; | |
714 | ||
715 | clock_enable_pkt[1][0] = 0x80; | |
716 | clock_enable_pkt[1][1] = 0; | |
717 | clock_enable_pkt[1][2] = 0; | |
718 | clock_enable_pkt[1][3] = 0; | |
719 | clock_enable_pkt[1][4] = 0; | |
720 | clock_enable_pkt[1][5] = 0; | |
721 | clock_enable_pkt[1][6] = 0; | |
722 | ||
723 | if (ictx->product == 0xffdc) { | |
724 | clock_enable_pkt[0][7] = 0x50; | |
725 | clock_enable_pkt[1][7] = 0x51; | |
726 | } else { | |
727 | clock_enable_pkt[0][7] = 0x88; | |
728 | clock_enable_pkt[1][7] = 0x8a; | |
729 | } | |
730 | ||
731 | break; | |
732 | ||
733 | case IMON_DISPLAY_TYPE_VFD: | |
734 | clock_enable_pkt[0][0] = year; | |
735 | clock_enable_pkt[0][1] = month-1; | |
736 | clock_enable_pkt[0][2] = day; | |
737 | clock_enable_pkt[0][3] = dow; | |
738 | clock_enable_pkt[0][4] = hour; | |
739 | clock_enable_pkt[0][5] = minute; | |
740 | clock_enable_pkt[0][6] = second; | |
741 | clock_enable_pkt[0][7] = 0x40; | |
742 | ||
743 | clock_enable_pkt[1][0] = 0; | |
744 | clock_enable_pkt[1][1] = 0; | |
745 | clock_enable_pkt[1][2] = 1; | |
746 | clock_enable_pkt[1][3] = 0; | |
747 | clock_enable_pkt[1][4] = 0; | |
748 | clock_enable_pkt[1][5] = 0; | |
749 | clock_enable_pkt[1][6] = 0; | |
750 | clock_enable_pkt[1][7] = 0x42; | |
751 | ||
752 | break; | |
753 | ||
754 | default: | |
755 | return -ENODEV; | |
756 | } | |
757 | ||
758 | for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) { | |
759 | memcpy(ictx->usb_tx_buf, clock_enable_pkt[i], 8); | |
760 | retval = send_packet(ictx); | |
761 | if (retval) { | |
e2302501 | 762 | pr_err("send_packet failed for packet %d\n", i); |
21677cfc JW |
763 | break; |
764 | } | |
765 | } | |
766 | ||
767 | return retval; | |
768 | } | |
769 | ||
770 | /** | |
771 | * These are the sysfs functions to handle the association on the iMON 2.4G LT. | |
772 | */ | |
773 | static ssize_t show_associate_remote(struct device *d, | |
774 | struct device_attribute *attr, | |
775 | char *buf) | |
776 | { | |
777 | struct imon_context *ictx = dev_get_drvdata(d); | |
778 | ||
779 | if (!ictx) | |
780 | return -ENODEV; | |
781 | ||
782 | mutex_lock(&ictx->lock); | |
783 | if (ictx->rf_isassociating) | |
784 | strcpy(buf, "associating\n"); | |
785 | else | |
786 | strcpy(buf, "closed\n"); | |
787 | ||
788 | dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for " | |
789 | "instructions on how to associate your iMON 2.4G DT/LT " | |
790 | "remote\n"); | |
791 | mutex_unlock(&ictx->lock); | |
792 | return strlen(buf); | |
793 | } | |
794 | ||
795 | static ssize_t store_associate_remote(struct device *d, | |
796 | struct device_attribute *attr, | |
797 | const char *buf, size_t count) | |
798 | { | |
799 | struct imon_context *ictx; | |
800 | ||
801 | ictx = dev_get_drvdata(d); | |
802 | ||
803 | if (!ictx) | |
804 | return -ENODEV; | |
805 | ||
806 | mutex_lock(&ictx->lock); | |
f789bf40 | 807 | ictx->rf_isassociating = true; |
21677cfc JW |
808 | send_associate_24g(ictx); |
809 | mutex_unlock(&ictx->lock); | |
810 | ||
811 | return count; | |
812 | } | |
813 | ||
814 | /** | |
815 | * sysfs functions to control internal imon clock | |
816 | */ | |
817 | static ssize_t show_imon_clock(struct device *d, | |
818 | struct device_attribute *attr, char *buf) | |
819 | { | |
820 | struct imon_context *ictx = dev_get_drvdata(d); | |
821 | size_t len; | |
822 | ||
823 | if (!ictx) | |
824 | return -ENODEV; | |
825 | ||
826 | mutex_lock(&ictx->lock); | |
827 | ||
828 | if (!ictx->display_supported) { | |
829 | len = snprintf(buf, PAGE_SIZE, "Not supported."); | |
830 | } else { | |
831 | len = snprintf(buf, PAGE_SIZE, | |
832 | "To set the clock on your iMON display:\n" | |
833 | "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n" | |
834 | "%s", ictx->display_isopen ? | |
835 | "\nNOTE: imon device must be closed\n" : ""); | |
836 | } | |
837 | ||
838 | mutex_unlock(&ictx->lock); | |
839 | ||
840 | return len; | |
841 | } | |
842 | ||
843 | static ssize_t store_imon_clock(struct device *d, | |
844 | struct device_attribute *attr, | |
845 | const char *buf, size_t count) | |
846 | { | |
847 | struct imon_context *ictx = dev_get_drvdata(d); | |
848 | ssize_t retval; | |
849 | unsigned int year, month, day, dow, hour, minute, second; | |
850 | ||
851 | if (!ictx) | |
852 | return -ENODEV; | |
853 | ||
854 | mutex_lock(&ictx->lock); | |
855 | ||
856 | if (!ictx->display_supported) { | |
857 | retval = -ENODEV; | |
858 | goto exit; | |
859 | } else if (ictx->display_isopen) { | |
860 | retval = -EBUSY; | |
861 | goto exit; | |
862 | } | |
863 | ||
864 | if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow, | |
865 | &hour, &minute, &second) != 7) { | |
866 | retval = -EINVAL; | |
867 | goto exit; | |
868 | } | |
869 | ||
870 | if ((month < 1 || month > 12) || | |
871 | (day < 1 || day > 31) || (dow > 6) || | |
872 | (hour > 23) || (minute > 59) || (second > 59)) { | |
873 | retval = -EINVAL; | |
874 | goto exit; | |
875 | } | |
876 | ||
877 | retval = send_set_imon_clock(ictx, year, month, day, dow, | |
878 | hour, minute, second); | |
879 | if (retval) | |
880 | goto exit; | |
881 | ||
882 | retval = count; | |
883 | exit: | |
884 | mutex_unlock(&ictx->lock); | |
885 | ||
886 | return retval; | |
887 | } | |
888 | ||
889 | ||
890 | static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock, | |
891 | store_imon_clock); | |
892 | ||
893 | static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote, | |
894 | store_associate_remote); | |
895 | ||
896 | static struct attribute *imon_display_sysfs_entries[] = { | |
897 | &dev_attr_imon_clock.attr, | |
898 | NULL | |
899 | }; | |
900 | ||
6aa209e4 | 901 | static struct attribute_group imon_display_attr_group = { |
21677cfc JW |
902 | .attrs = imon_display_sysfs_entries |
903 | }; | |
904 | ||
905 | static struct attribute *imon_rf_sysfs_entries[] = { | |
906 | &dev_attr_associate_remote.attr, | |
907 | NULL | |
908 | }; | |
909 | ||
6aa209e4 | 910 | static struct attribute_group imon_rf_attr_group = { |
21677cfc JW |
911 | .attrs = imon_rf_sysfs_entries |
912 | }; | |
913 | ||
914 | /** | |
915 | * Writes data to the VFD. The iMON VFD is 2x16 characters | |
916 | * and requires data in 5 consecutive USB interrupt packets, | |
917 | * each packet but the last carrying 7 bytes. | |
918 | * | |
919 | * I don't know if the VFD board supports features such as | |
920 | * scrolling, clearing rows, blanking, etc. so at | |
921 | * the caller must provide a full screen of data. If fewer | |
922 | * than 32 bytes are provided spaces will be appended to | |
923 | * generate a full screen. | |
924 | */ | |
d6740d86 | 925 | static ssize_t vfd_write(struct file *file, const char __user *buf, |
21677cfc JW |
926 | size_t n_bytes, loff_t *pos) |
927 | { | |
928 | int i; | |
929 | int offset; | |
930 | int seq; | |
931 | int retval = 0; | |
932 | struct imon_context *ictx; | |
933 | const unsigned char vfd_packet6[] = { | |
934 | 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF }; | |
935 | ||
abf84383 | 936 | ictx = file->private_data; |
21677cfc | 937 | if (!ictx) { |
47a09b08 | 938 | pr_err_ratelimited("no context for device\n"); |
21677cfc JW |
939 | return -ENODEV; |
940 | } | |
941 | ||
942 | mutex_lock(&ictx->lock); | |
943 | ||
944 | if (!ictx->dev_present_intf0) { | |
47a09b08 | 945 | pr_err_ratelimited("no iMON device present\n"); |
21677cfc JW |
946 | retval = -ENODEV; |
947 | goto exit; | |
948 | } | |
949 | ||
950 | if (n_bytes <= 0 || n_bytes > 32) { | |
47a09b08 | 951 | pr_err_ratelimited("invalid payload size\n"); |
21677cfc JW |
952 | retval = -EINVAL; |
953 | goto exit; | |
954 | } | |
955 | ||
956 | if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) { | |
957 | retval = -EFAULT; | |
958 | goto exit; | |
959 | } | |
960 | ||
961 | /* Pad with spaces */ | |
962 | for (i = n_bytes; i < 32; ++i) | |
963 | ictx->tx.data_buf[i] = ' '; | |
964 | ||
965 | for (i = 32; i < 35; ++i) | |
966 | ictx->tx.data_buf[i] = 0xFF; | |
967 | ||
968 | offset = 0; | |
969 | seq = 0; | |
970 | ||
971 | do { | |
972 | memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7); | |
973 | ictx->usb_tx_buf[7] = (unsigned char) seq; | |
974 | ||
975 | retval = send_packet(ictx); | |
976 | if (retval) { | |
47a09b08 | 977 | pr_err_ratelimited("send packet #%d failed\n", seq / 2); |
21677cfc JW |
978 | goto exit; |
979 | } else { | |
980 | seq += 2; | |
981 | offset += 7; | |
982 | } | |
983 | ||
984 | } while (offset < 35); | |
985 | ||
986 | /* Send packet #6 */ | |
987 | memcpy(ictx->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6)); | |
988 | ictx->usb_tx_buf[7] = (unsigned char) seq; | |
989 | retval = send_packet(ictx); | |
990 | if (retval) | |
47a09b08 | 991 | pr_err_ratelimited("send packet #%d failed\n", seq / 2); |
21677cfc JW |
992 | |
993 | exit: | |
994 | mutex_unlock(&ictx->lock); | |
995 | ||
996 | return (!retval) ? n_bytes : retval; | |
997 | } | |
998 | ||
999 | /** | |
1000 | * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte | |
1001 | * packets. We accept data as 16 hexadecimal digits, followed by a | |
1002 | * newline (to make it easy to drive the device from a command-line | |
1003 | * -- even though the actual binary data is a bit complicated). | |
1004 | * | |
1005 | * The device itself is not a "traditional" text-mode display. It's | |
1006 | * actually a 16x96 pixel bitmap display. That means if you want to | |
1007 | * display text, you've got to have your own "font" and translate the | |
1008 | * text into bitmaps for display. This is really flexible (you can | |
1009 | * display whatever diacritics you need, and so on), but it's also | |
1010 | * a lot more complicated than most LCDs... | |
1011 | */ | |
d6740d86 | 1012 | static ssize_t lcd_write(struct file *file, const char __user *buf, |
21677cfc JW |
1013 | size_t n_bytes, loff_t *pos) |
1014 | { | |
1015 | int retval = 0; | |
1016 | struct imon_context *ictx; | |
1017 | ||
abf84383 | 1018 | ictx = file->private_data; |
21677cfc | 1019 | if (!ictx) { |
47a09b08 | 1020 | pr_err_ratelimited("no context for device\n"); |
21677cfc JW |
1021 | return -ENODEV; |
1022 | } | |
1023 | ||
1024 | mutex_lock(&ictx->lock); | |
1025 | ||
1026 | if (!ictx->display_supported) { | |
47a09b08 | 1027 | pr_err_ratelimited("no iMON display present\n"); |
21677cfc JW |
1028 | retval = -ENODEV; |
1029 | goto exit; | |
1030 | } | |
1031 | ||
1032 | if (n_bytes != 8) { | |
47a09b08 JW |
1033 | pr_err_ratelimited("invalid payload size: %d (expected 8)\n", |
1034 | (int)n_bytes); | |
21677cfc JW |
1035 | retval = -EINVAL; |
1036 | goto exit; | |
1037 | } | |
1038 | ||
1039 | if (copy_from_user(ictx->usb_tx_buf, buf, 8)) { | |
1040 | retval = -EFAULT; | |
1041 | goto exit; | |
1042 | } | |
1043 | ||
1044 | retval = send_packet(ictx); | |
1045 | if (retval) { | |
47a09b08 | 1046 | pr_err_ratelimited("send packet failed!\n"); |
21677cfc JW |
1047 | goto exit; |
1048 | } else { | |
1049 | dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n", | |
1050 | __func__, (int) n_bytes); | |
1051 | } | |
1052 | exit: | |
1053 | mutex_unlock(&ictx->lock); | |
1054 | return (!retval) ? n_bytes : retval; | |
1055 | } | |
1056 | ||
1057 | /** | |
1058 | * Callback function for USB core API: transmit data | |
1059 | */ | |
1060 | static void usb_tx_callback(struct urb *urb) | |
1061 | { | |
1062 | struct imon_context *ictx; | |
1063 | ||
1064 | if (!urb) | |
1065 | return; | |
1066 | ictx = (struct imon_context *)urb->context; | |
1067 | if (!ictx) | |
1068 | return; | |
1069 | ||
1070 | ictx->tx.status = urb->status; | |
1071 | ||
1072 | /* notify waiters that write has finished */ | |
f789bf40 | 1073 | ictx->tx.busy = false; |
21677cfc JW |
1074 | smp_rmb(); /* ensure later readers know we're not busy */ |
1075 | complete(&ictx->tx.finished); | |
1076 | } | |
1077 | ||
21677cfc JW |
1078 | /** |
1079 | * report touchscreen input | |
1080 | */ | |
1081 | static void imon_touch_display_timeout(unsigned long data) | |
1082 | { | |
1083 | struct imon_context *ictx = (struct imon_context *)data; | |
1084 | ||
f03900d6 | 1085 | if (ictx->display_type != IMON_DISPLAY_TYPE_VGA) |
21677cfc JW |
1086 | return; |
1087 | ||
1088 | input_report_abs(ictx->touch, ABS_X, ictx->touch_x); | |
1089 | input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); | |
1090 | input_report_key(ictx->touch, BTN_TOUCH, 0x00); | |
1091 | input_sync(ictx->touch); | |
1092 | } | |
1093 | ||
1094 | /** | |
1095 | * iMON IR receivers support two different signal sets -- those used by | |
1096 | * the iMON remotes, and those used by the Windows MCE remotes (which is | |
1097 | * really just RC-6), but only one or the other at a time, as the signals | |
1098 | * are decoded onboard the receiver. | |
23ef710e JW |
1099 | * |
1100 | * This function gets called two different ways, one way is from | |
1101 | * rc_register_device, for initial protocol selection/setup, and the other is | |
1102 | * via a userspace-initiated protocol change request, either by direct sysfs | |
1103 | * prodding or by something like ir-keytable. In the rc_register_device case, | |
1104 | * the imon context lock is already held, but when initiated from userspace, | |
1105 | * it is not, so we must acquire it prior to calling send_packet, which | |
1106 | * requires that the lock is held. | |
21677cfc | 1107 | */ |
c003ab1b | 1108 | static int imon_ir_change_protocol(struct rc_dev *rc, u64 *rc_type) |
21677cfc JW |
1109 | { |
1110 | int retval; | |
d8b4b582 | 1111 | struct imon_context *ictx = rc->priv; |
21677cfc | 1112 | struct device *dev = ictx->dev; |
23ef710e | 1113 | bool unlock = false; |
21677cfc JW |
1114 | unsigned char ir_proto_packet[] = { |
1115 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 }; | |
1116 | ||
c5540fbb | 1117 | if (*rc_type && !(*rc_type & rc->allowed_protocols)) |
21677cfc JW |
1118 | dev_warn(dev, "Looks like you're trying to use an IR protocol " |
1119 | "this device does not support\n"); | |
1120 | ||
c003ab1b | 1121 | if (*rc_type & RC_BIT_RC6_MCE) { |
21677cfc JW |
1122 | dev_dbg(dev, "Configuring IR receiver for MCE protocol\n"); |
1123 | ir_proto_packet[0] = 0x01; | |
c003ab1b DH |
1124 | *rc_type = RC_BIT_RC6_MCE; |
1125 | } else if (*rc_type & RC_BIT_OTHER) { | |
666a9ed8 | 1126 | dev_dbg(dev, "Configuring IR receiver for iMON protocol\n"); |
76f1ef42 | 1127 | if (!pad_stabilize) |
666a9ed8 | 1128 | dev_dbg(dev, "PAD stabilize functionality disabled\n"); |
21677cfc | 1129 | /* ir_proto_packet[0] = 0x00; // already the default */ |
c003ab1b DH |
1130 | *rc_type = RC_BIT_OTHER; |
1131 | } else { | |
6718e8ad | 1132 | dev_warn(dev, "Unsupported IR protocol specified, overriding " |
666a9ed8 | 1133 | "to iMON IR protocol\n"); |
76f1ef42 | 1134 | if (!pad_stabilize) |
666a9ed8 | 1135 | dev_dbg(dev, "PAD stabilize functionality disabled\n"); |
6718e8ad | 1136 | /* ir_proto_packet[0] = 0x00; // already the default */ |
c003ab1b | 1137 | *rc_type = RC_BIT_OTHER; |
21677cfc JW |
1138 | } |
1139 | ||
1140 | memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet)); | |
1141 | ||
23ef710e JW |
1142 | if (!mutex_is_locked(&ictx->lock)) { |
1143 | unlock = true; | |
1144 | mutex_lock(&ictx->lock); | |
1145 | } | |
1146 | ||
21677cfc | 1147 | retval = send_packet(ictx); |
6718e8ad JW |
1148 | if (retval) |
1149 | goto out; | |
1150 | ||
c003ab1b | 1151 | ictx->rc_type = *rc_type; |
76f1ef42 | 1152 | ictx->pad_mouse = false; |
6718e8ad JW |
1153 | |
1154 | out: | |
23ef710e JW |
1155 | if (unlock) |
1156 | mutex_unlock(&ictx->lock); | |
1157 | ||
6718e8ad | 1158 | return retval; |
21677cfc JW |
1159 | } |
1160 | ||
1161 | static inline int tv2int(const struct timeval *a, const struct timeval *b) | |
1162 | { | |
1163 | int usecs = 0; | |
1164 | int sec = 0; | |
1165 | ||
1166 | if (b->tv_usec > a->tv_usec) { | |
1167 | usecs = 1000000; | |
1168 | sec--; | |
1169 | } | |
1170 | ||
1171 | usecs += a->tv_usec - b->tv_usec; | |
1172 | ||
1173 | sec += a->tv_sec - b->tv_sec; | |
1174 | sec *= 1000; | |
1175 | usecs /= 1000; | |
1176 | sec += usecs; | |
1177 | ||
1178 | if (sec < 0) | |
1179 | sec = 1000; | |
1180 | ||
1181 | return sec; | |
1182 | } | |
1183 | ||
1184 | /** | |
1185 | * The directional pad behaves a bit differently, depending on whether this is | |
1186 | * one of the older ffdc devices or a newer device. Newer devices appear to | |
1187 | * have a higher resolution matrix for more precise mouse movement, but it | |
1188 | * makes things overly sensitive in keyboard mode, so we do some interesting | |
1189 | * contortions to make it less touchy. Older devices run through the same | |
1190 | * routine with shorter timeout and a smaller threshold. | |
1191 | */ | |
1192 | static int stabilize(int a, int b, u16 timeout, u16 threshold) | |
1193 | { | |
1194 | struct timeval ct; | |
1195 | static struct timeval prev_time = {0, 0}; | |
1196 | static struct timeval hit_time = {0, 0}; | |
1197 | static int x, y, prev_result, hits; | |
1198 | int result = 0; | |
1199 | int msec, msec_hit; | |
1200 | ||
1201 | do_gettimeofday(&ct); | |
1202 | msec = tv2int(&ct, &prev_time); | |
1203 | msec_hit = tv2int(&ct, &hit_time); | |
1204 | ||
1205 | if (msec > 100) { | |
1206 | x = 0; | |
1207 | y = 0; | |
1208 | hits = 0; | |
1209 | } | |
1210 | ||
1211 | x += a; | |
1212 | y += b; | |
1213 | ||
1214 | prev_time = ct; | |
1215 | ||
1216 | if (abs(x) > threshold || abs(y) > threshold) { | |
1217 | if (abs(y) > abs(x)) | |
1218 | result = (y > 0) ? 0x7F : 0x80; | |
1219 | else | |
1220 | result = (x > 0) ? 0x7F00 : 0x8000; | |
1221 | ||
1222 | x = 0; | |
1223 | y = 0; | |
1224 | ||
1225 | if (result == prev_result) { | |
1226 | hits++; | |
1227 | ||
1228 | if (hits > 3) { | |
1229 | switch (result) { | |
1230 | case 0x7F: | |
1231 | y = 17 * threshold / 30; | |
1232 | break; | |
1233 | case 0x80: | |
1234 | y -= 17 * threshold / 30; | |
1235 | break; | |
1236 | case 0x7F00: | |
1237 | x = 17 * threshold / 30; | |
1238 | break; | |
1239 | case 0x8000: | |
1240 | x -= 17 * threshold / 30; | |
1241 | break; | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | if (hits == 2 && msec_hit < timeout) { | |
1246 | result = 0; | |
1247 | hits = 1; | |
1248 | } | |
1249 | } else { | |
1250 | prev_result = result; | |
1251 | hits = 1; | |
1252 | hit_time = ct; | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | return result; | |
1257 | } | |
1258 | ||
eaf2bcc9 | 1259 | static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 scancode) |
21677cfc | 1260 | { |
21677cfc JW |
1261 | u32 keycode; |
1262 | u32 release; | |
1263 | bool is_release_code = false; | |
1264 | ||
1265 | /* Look for the initial press of a button */ | |
ca86674b | 1266 | keycode = rc_g_keycode_from_table(ictx->rdev, scancode); |
eaf2bcc9 DH |
1267 | ictx->rc_toggle = 0x0; |
1268 | ictx->rc_scancode = scancode; | |
21677cfc JW |
1269 | |
1270 | /* Look for the release of a button */ | |
1271 | if (keycode == KEY_RESERVED) { | |
1272 | release = scancode & ~0x4000; | |
ca86674b | 1273 | keycode = rc_g_keycode_from_table(ictx->rdev, release); |
21677cfc JW |
1274 | if (keycode != KEY_RESERVED) |
1275 | is_release_code = true; | |
1276 | } | |
1277 | ||
1278 | ictx->release_code = is_release_code; | |
1279 | ||
1280 | return keycode; | |
1281 | } | |
1282 | ||
eaf2bcc9 | 1283 | static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 scancode) |
21677cfc | 1284 | { |
21677cfc JW |
1285 | u32 keycode; |
1286 | ||
1287 | #define MCE_KEY_MASK 0x7000 | |
1288 | #define MCE_TOGGLE_BIT 0x8000 | |
1289 | ||
1290 | /* | |
1291 | * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx | |
1292 | * (the toggle bit flipping between alternating key presses), while | |
1293 | * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep | |
1294 | * the table trim, we always or in the bits to look up 0x8000ff4xx, | |
1295 | * but we can't or them into all codes, as some keys are decoded in | |
1296 | * a different way w/o the same use of the toggle bit... | |
1297 | */ | |
eaf2bcc9 | 1298 | if (scancode & 0x80000000) |
21677cfc JW |
1299 | scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT; |
1300 | ||
eaf2bcc9 | 1301 | ictx->rc_scancode = scancode; |
ca86674b | 1302 | keycode = rc_g_keycode_from_table(ictx->rdev, scancode); |
eaf2bcc9 DH |
1303 | |
1304 | /* not used in mce mode, but make sure we know its false */ | |
1305 | ictx->release_code = false; | |
21677cfc JW |
1306 | |
1307 | return keycode; | |
1308 | } | |
1309 | ||
0d8053f2 | 1310 | static u32 imon_panel_key_lookup(struct imon_context *ictx, u64 code) |
21677cfc JW |
1311 | { |
1312 | int i; | |
083e4721 | 1313 | u32 keycode = KEY_RESERVED; |
0d8053f2 | 1314 | struct imon_panel_key_table *key_table = ictx->dev_descr->key_table; |
21677cfc | 1315 | |
0d8053f2 UE |
1316 | for (i = 0; key_table[i].hw_code != 0; i++) { |
1317 | if (key_table[i].hw_code == (code | 0xffee)) { | |
1318 | keycode = key_table[i].keycode; | |
21677cfc | 1319 | break; |
083e4721 JW |
1320 | } |
1321 | } | |
0d8053f2 | 1322 | ictx->release_code = false; |
21677cfc JW |
1323 | return keycode; |
1324 | } | |
1325 | ||
1326 | static bool imon_mouse_event(struct imon_context *ictx, | |
1327 | unsigned char *buf, int len) | |
1328 | { | |
24dec5da | 1329 | signed char rel_x = 0x00, rel_y = 0x00; |
21677cfc | 1330 | u8 right_shift = 1; |
f789bf40 | 1331 | bool mouse_input = true; |
21677cfc | 1332 | int dir = 0; |
693508df JW |
1333 | unsigned long flags; |
1334 | ||
1335 | spin_lock_irqsave(&ictx->kc_lock, flags); | |
21677cfc JW |
1336 | |
1337 | /* newer iMON device PAD or mouse button */ | |
1338 | if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) { | |
1339 | rel_x = buf[2]; | |
1340 | rel_y = buf[3]; | |
1341 | right_shift = 1; | |
1342 | /* 0xffdc iMON PAD or mouse button input */ | |
1343 | } else if (ictx->product == 0xffdc && (buf[0] & 0x40) && | |
1344 | !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) { | |
1345 | rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | | |
1346 | (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6; | |
1347 | if (buf[0] & 0x02) | |
1348 | rel_x |= ~0x0f; | |
1349 | rel_x = rel_x + rel_x / 2; | |
1350 | rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | | |
1351 | (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6; | |
1352 | if (buf[0] & 0x01) | |
1353 | rel_y |= ~0x0f; | |
1354 | rel_y = rel_y + rel_y / 2; | |
1355 | right_shift = 2; | |
1356 | /* some ffdc devices decode mouse buttons differently... */ | |
1357 | } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) { | |
1358 | right_shift = 2; | |
1359 | /* ch+/- buttons, which we use for an emulated scroll wheel */ | |
1360 | } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) { | |
1361 | dir = 1; | |
1362 | } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) { | |
1363 | dir = -1; | |
1364 | } else | |
f789bf40 | 1365 | mouse_input = false; |
21677cfc | 1366 | |
693508df JW |
1367 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
1368 | ||
21677cfc JW |
1369 | if (mouse_input) { |
1370 | dev_dbg(ictx->dev, "sending mouse data via input subsystem\n"); | |
1371 | ||
1372 | if (dir) { | |
1373 | input_report_rel(ictx->idev, REL_WHEEL, dir); | |
1374 | } else if (rel_x || rel_y) { | |
1375 | input_report_rel(ictx->idev, REL_X, rel_x); | |
1376 | input_report_rel(ictx->idev, REL_Y, rel_y); | |
1377 | } else { | |
1378 | input_report_key(ictx->idev, BTN_LEFT, buf[1] & 0x1); | |
1379 | input_report_key(ictx->idev, BTN_RIGHT, | |
1380 | buf[1] >> right_shift & 0x1); | |
1381 | } | |
1382 | input_sync(ictx->idev); | |
693508df | 1383 | spin_lock_irqsave(&ictx->kc_lock, flags); |
21677cfc | 1384 | ictx->last_keycode = ictx->kc; |
693508df | 1385 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
21677cfc JW |
1386 | } |
1387 | ||
1388 | return mouse_input; | |
1389 | } | |
1390 | ||
1391 | static void imon_touch_event(struct imon_context *ictx, unsigned char *buf) | |
1392 | { | |
1393 | mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT); | |
1394 | ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4); | |
1395 | ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf)); | |
1396 | input_report_abs(ictx->touch, ABS_X, ictx->touch_x); | |
1397 | input_report_abs(ictx->touch, ABS_Y, ictx->touch_y); | |
1398 | input_report_key(ictx->touch, BTN_TOUCH, 0x01); | |
1399 | input_sync(ictx->touch); | |
1400 | } | |
1401 | ||
1402 | static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf) | |
1403 | { | |
1404 | int dir = 0; | |
24dec5da | 1405 | signed char rel_x = 0x00, rel_y = 0x00; |
21677cfc | 1406 | u16 timeout, threshold; |
eaf2bcc9 | 1407 | u32 scancode = KEY_RESERVED; |
693508df | 1408 | unsigned long flags; |
21677cfc JW |
1409 | |
1410 | /* | |
1411 | * The imon directional pad functions more like a touchpad. Bytes 3 & 4 | |
1412 | * contain a position coordinate (x,y), with each component ranging | |
1413 | * from -14 to 14. We want to down-sample this to only 4 discrete values | |
1414 | * for up/down/left/right arrow keys. Also, when you get too close to | |
25985edc | 1415 | * diagonals, it has a tendency to jump back and forth, so lets try to |
21677cfc JW |
1416 | * ignore when they get too close. |
1417 | */ | |
1418 | if (ictx->product != 0xffdc) { | |
1419 | /* first, pad to 8 bytes so it conforms with everything else */ | |
1420 | buf[5] = buf[6] = buf[7] = 0; | |
1421 | timeout = 500; /* in msecs */ | |
1422 | /* (2*threshold) x (2*threshold) square */ | |
1423 | threshold = pad_thresh ? pad_thresh : 28; | |
1424 | rel_x = buf[2]; | |
1425 | rel_y = buf[3]; | |
1426 | ||
c003ab1b | 1427 | if (ictx->rc_type == RC_BIT_OTHER && pad_stabilize) { |
21677cfc JW |
1428 | if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) { |
1429 | dir = stabilize((int)rel_x, (int)rel_y, | |
1430 | timeout, threshold); | |
1431 | if (!dir) { | |
693508df JW |
1432 | spin_lock_irqsave(&ictx->kc_lock, |
1433 | flags); | |
21677cfc | 1434 | ictx->kc = KEY_UNKNOWN; |
693508df JW |
1435 | spin_unlock_irqrestore(&ictx->kc_lock, |
1436 | flags); | |
21677cfc JW |
1437 | return; |
1438 | } | |
1439 | buf[2] = dir & 0xFF; | |
1440 | buf[3] = (dir >> 8) & 0xFF; | |
d778d258 | 1441 | scancode = be32_to_cpu(*((__be32 *)buf)); |
21677cfc JW |
1442 | } |
1443 | } else { | |
eaf2bcc9 DH |
1444 | /* |
1445 | * Hack alert: instead of using keycodes, we have | |
1446 | * to use hard-coded scancodes here... | |
1447 | */ | |
21677cfc JW |
1448 | if (abs(rel_y) > abs(rel_x)) { |
1449 | buf[2] = (rel_y > 0) ? 0x7F : 0x80; | |
1450 | buf[3] = 0; | |
eaf2bcc9 DH |
1451 | if (rel_y > 0) |
1452 | scancode = 0x01007f00; /* KEY_DOWN */ | |
1453 | else | |
1454 | scancode = 0x01008000; /* KEY_UP */ | |
21677cfc JW |
1455 | } else { |
1456 | buf[2] = 0; | |
1457 | buf[3] = (rel_x > 0) ? 0x7F : 0x80; | |
eaf2bcc9 DH |
1458 | if (rel_x > 0) |
1459 | scancode = 0x0100007f; /* KEY_RIGHT */ | |
1460 | else | |
1461 | scancode = 0x01000080; /* KEY_LEFT */ | |
21677cfc JW |
1462 | } |
1463 | } | |
1464 | ||
1465 | /* | |
1466 | * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad | |
1467 | * device (15c2:ffdc). The remote generates various codes from | |
1468 | * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates | |
1469 | * 0x688301b7 and the right one 0x688481b7. All other keys generate | |
1470 | * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with | |
39c1cb2b | 1471 | * reversed endianness. Extract direction from buffer, rotate endianness, |
21677cfc JW |
1472 | * adjust sign and feed the values into stabilize(). The resulting codes |
1473 | * will be 0x01008000, 0x01007F00, which match the newer devices. | |
1474 | */ | |
1475 | } else { | |
1476 | timeout = 10; /* in msecs */ | |
1477 | /* (2*threshold) x (2*threshold) square */ | |
1478 | threshold = pad_thresh ? pad_thresh : 15; | |
1479 | ||
1480 | /* buf[1] is x */ | |
1481 | rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 | | |
1482 | (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6; | |
1483 | if (buf[0] & 0x02) | |
1484 | rel_x |= ~0x10+1; | |
1485 | /* buf[2] is y */ | |
1486 | rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 | | |
1487 | (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6; | |
1488 | if (buf[0] & 0x01) | |
1489 | rel_y |= ~0x10+1; | |
1490 | ||
1491 | buf[0] = 0x01; | |
1492 | buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0; | |
1493 | ||
c003ab1b | 1494 | if (ictx->rc_type == RC_BIT_OTHER && pad_stabilize) { |
21677cfc JW |
1495 | dir = stabilize((int)rel_x, (int)rel_y, |
1496 | timeout, threshold); | |
1497 | if (!dir) { | |
693508df | 1498 | spin_lock_irqsave(&ictx->kc_lock, flags); |
21677cfc | 1499 | ictx->kc = KEY_UNKNOWN; |
693508df | 1500 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
21677cfc JW |
1501 | return; |
1502 | } | |
1503 | buf[2] = dir & 0xFF; | |
1504 | buf[3] = (dir >> 8) & 0xFF; | |
d778d258 | 1505 | scancode = be32_to_cpu(*((__be32 *)buf)); |
21677cfc | 1506 | } else { |
eaf2bcc9 DH |
1507 | /* |
1508 | * Hack alert: instead of using keycodes, we have | |
1509 | * to use hard-coded scancodes here... | |
1510 | */ | |
21677cfc JW |
1511 | if (abs(rel_y) > abs(rel_x)) { |
1512 | buf[2] = (rel_y > 0) ? 0x7F : 0x80; | |
1513 | buf[3] = 0; | |
eaf2bcc9 DH |
1514 | if (rel_y > 0) |
1515 | scancode = 0x01007f00; /* KEY_DOWN */ | |
1516 | else | |
1517 | scancode = 0x01008000; /* KEY_UP */ | |
21677cfc JW |
1518 | } else { |
1519 | buf[2] = 0; | |
1520 | buf[3] = (rel_x > 0) ? 0x7F : 0x80; | |
eaf2bcc9 DH |
1521 | if (rel_x > 0) |
1522 | scancode = 0x0100007f; /* KEY_RIGHT */ | |
1523 | else | |
1524 | scancode = 0x01000080; /* KEY_LEFT */ | |
21677cfc JW |
1525 | } |
1526 | } | |
1527 | } | |
eaf2bcc9 | 1528 | |
693508df JW |
1529 | if (scancode) { |
1530 | spin_lock_irqsave(&ictx->kc_lock, flags); | |
eaf2bcc9 | 1531 | ictx->kc = imon_remote_key_lookup(ictx, scancode); |
693508df JW |
1532 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
1533 | } | |
21677cfc JW |
1534 | } |
1535 | ||
eaf2bcc9 DH |
1536 | /** |
1537 | * figure out if these is a press or a release. We don't actually | |
1538 | * care about repeats, as those will be auto-generated within the IR | |
1539 | * subsystem for repeating scancodes. | |
1540 | */ | |
21677cfc JW |
1541 | static int imon_parse_press_type(struct imon_context *ictx, |
1542 | unsigned char *buf, u8 ktype) | |
1543 | { | |
1544 | int press_type = 0; | |
693508df JW |
1545 | unsigned long flags; |
1546 | ||
1547 | spin_lock_irqsave(&ictx->kc_lock, flags); | |
21677cfc JW |
1548 | |
1549 | /* key release of 0x02XXXXXX key */ | |
1550 | if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00) | |
1551 | ictx->kc = ictx->last_keycode; | |
1552 | ||
1553 | /* mouse button release on (some) 0xffdc devices */ | |
1554 | else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 && | |
1555 | buf[2] == 0x81 && buf[3] == 0xb7) | |
1556 | ictx->kc = ictx->last_keycode; | |
1557 | ||
1558 | /* mouse button release on (some other) 0xffdc devices */ | |
1559 | else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 && | |
1560 | buf[2] == 0x81 && buf[3] == 0xb7) | |
1561 | ictx->kc = ictx->last_keycode; | |
1562 | ||
eaf2bcc9 | 1563 | /* mce-specific button handling, no keyup events */ |
21677cfc | 1564 | else if (ktype == IMON_KEY_MCE) { |
eaf2bcc9 DH |
1565 | ictx->rc_toggle = buf[2]; |
1566 | press_type = 1; | |
21677cfc JW |
1567 | |
1568 | /* incoherent or irrelevant data */ | |
1569 | } else if (ictx->kc == KEY_RESERVED) | |
1570 | press_type = -EINVAL; | |
1571 | ||
1572 | /* key release of 0xXXXXXXb7 key */ | |
1573 | else if (ictx->release_code) | |
1574 | press_type = 0; | |
1575 | ||
1576 | /* this is a button press */ | |
1577 | else | |
1578 | press_type = 1; | |
1579 | ||
693508df JW |
1580 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
1581 | ||
21677cfc JW |
1582 | return press_type; |
1583 | } | |
1584 | ||
1585 | /** | |
1586 | * Process the incoming packet | |
1587 | */ | |
1588 | static void imon_incoming_packet(struct imon_context *ictx, | |
1589 | struct urb *urb, int intf) | |
1590 | { | |
1591 | int len = urb->actual_length; | |
1592 | unsigned char *buf = urb->transfer_buffer; | |
1593 | struct device *dev = ictx->dev; | |
693508df | 1594 | unsigned long flags; |
21677cfc | 1595 | u32 kc; |
21677cfc | 1596 | int i; |
eaf2bcc9 | 1597 | u64 scancode; |
21677cfc JW |
1598 | int press_type = 0; |
1599 | int msec; | |
1600 | struct timeval t; | |
1601 | static struct timeval prev_time = { 0, 0 }; | |
eaf2bcc9 | 1602 | u8 ktype; |
21677cfc | 1603 | |
21677cfc | 1604 | /* filter out junk data on the older 0xffdc imon devices */ |
bbe4690f | 1605 | if ((buf[0] == 0xff) && (buf[1] == 0xff) && (buf[2] == 0xff)) |
21677cfc JW |
1606 | return; |
1607 | ||
1608 | /* Figure out what key was pressed */ | |
21677cfc | 1609 | if (len == 8 && buf[7] == 0xee) { |
d778d258 | 1610 | scancode = be64_to_cpu(*((__be64 *)buf)); |
21677cfc | 1611 | ktype = IMON_KEY_PANEL; |
0d8053f2 | 1612 | kc = imon_panel_key_lookup(ictx, scancode); |
6ddc2be5 | 1613 | ictx->release_code = false; |
21677cfc | 1614 | } else { |
d778d258 | 1615 | scancode = be32_to_cpu(*((__be32 *)buf)); |
c003ab1b | 1616 | if (ictx->rc_type == RC_BIT_RC6_MCE) { |
eaf2bcc9 | 1617 | ktype = IMON_KEY_IMON; |
21677cfc JW |
1618 | if (buf[0] == 0x80) |
1619 | ktype = IMON_KEY_MCE; | |
eaf2bcc9 DH |
1620 | kc = imon_mce_key_lookup(ictx, scancode); |
1621 | } else { | |
1622 | ktype = IMON_KEY_IMON; | |
1623 | kc = imon_remote_key_lookup(ictx, scancode); | |
1624 | } | |
21677cfc JW |
1625 | } |
1626 | ||
693508df | 1627 | spin_lock_irqsave(&ictx->kc_lock, flags); |
21677cfc JW |
1628 | /* keyboard/mouse mode toggle button */ |
1629 | if (kc == KEY_KEYBOARD && !ictx->release_code) { | |
1630 | ictx->last_keycode = kc; | |
1631 | if (!nomouse) { | |
1632 | ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1; | |
1633 | dev_dbg(dev, "toggling to %s mode\n", | |
1634 | ictx->pad_mouse ? "mouse" : "keyboard"); | |
693508df | 1635 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
21677cfc JW |
1636 | return; |
1637 | } else { | |
76f1ef42 | 1638 | ictx->pad_mouse = false; |
21677cfc JW |
1639 | dev_dbg(dev, "mouse mode disabled, passing key value\n"); |
1640 | } | |
1641 | } | |
1642 | ||
1643 | ictx->kc = kc; | |
693508df | 1644 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
21677cfc JW |
1645 | |
1646 | /* send touchscreen events through input subsystem if touchpad data */ | |
1647 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 && | |
1648 | buf[7] == 0x86) { | |
1649 | imon_touch_event(ictx, buf); | |
eaf2bcc9 | 1650 | return; |
21677cfc JW |
1651 | |
1652 | /* look for mouse events with pad in mouse mode */ | |
1653 | } else if (ictx->pad_mouse) { | |
1654 | if (imon_mouse_event(ictx, buf, len)) | |
1655 | return; | |
1656 | } | |
1657 | ||
1658 | /* Now for some special handling to convert pad input to arrow keys */ | |
1659 | if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) || | |
1660 | ((len == 8) && (buf[0] & 0x40) && | |
1661 | !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) { | |
1662 | len = 8; | |
1663 | imon_pad_to_keys(ictx, buf); | |
21677cfc JW |
1664 | } |
1665 | ||
1666 | if (debug) { | |
1667 | printk(KERN_INFO "intf%d decoded packet: ", intf); | |
1668 | for (i = 0; i < len; ++i) | |
1669 | printk("%02x ", buf[i]); | |
1670 | printk("\n"); | |
1671 | } | |
1672 | ||
1673 | press_type = imon_parse_press_type(ictx, buf, ktype); | |
1674 | if (press_type < 0) | |
1675 | goto not_input_data; | |
1676 | ||
eaf2bcc9 DH |
1677 | if (ktype != IMON_KEY_PANEL) { |
1678 | if (press_type == 0) | |
ca86674b | 1679 | rc_keyup(ictx->rdev); |
eaf2bcc9 | 1680 | else { |
d358aefd UE |
1681 | if (ictx->rc_type == RC_BIT_RC6_MCE || |
1682 | ictx->rc_type == RC_BIT_OTHER) | |
120703f9 DH |
1683 | rc_keydown(ictx->rdev, |
1684 | ictx->rc_type == RC_BIT_RC6_MCE ? RC_TYPE_RC6_MCE : RC_TYPE_OTHER, | |
1685 | ictx->rc_scancode, ictx->rc_toggle); | |
693508df | 1686 | spin_lock_irqsave(&ictx->kc_lock, flags); |
eaf2bcc9 | 1687 | ictx->last_keycode = ictx->kc; |
693508df | 1688 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
eaf2bcc9 DH |
1689 | } |
1690 | return; | |
1691 | } | |
21677cfc | 1692 | |
eaf2bcc9 | 1693 | /* Only panel type events left to process now */ |
693508df JW |
1694 | spin_lock_irqsave(&ictx->kc_lock, flags); |
1695 | ||
94215ccd | 1696 | do_gettimeofday(&t); |
eaf2bcc9 DH |
1697 | /* KEY_MUTE repeats from knob need to be suppressed */ |
1698 | if (ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) { | |
21677cfc | 1699 | msec = tv2int(&t, &prev_time); |
428cc763 | 1700 | if (msec < ictx->idev->rep[REP_DELAY]) { |
693508df | 1701 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
21677cfc | 1702 | return; |
693508df | 1703 | } |
21677cfc | 1704 | } |
94215ccd | 1705 | prev_time = t; |
693508df | 1706 | kc = ictx->kc; |
21677cfc | 1707 | |
693508df | 1708 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
21677cfc | 1709 | |
428cc763 JW |
1710 | input_report_key(ictx->idev, kc, press_type); |
1711 | input_sync(ictx->idev); | |
21677cfc | 1712 | |
eaf2bcc9 | 1713 | /* panel keys don't generate a release */ |
428cc763 JW |
1714 | input_report_key(ictx->idev, kc, 0); |
1715 | input_sync(ictx->idev); | |
21677cfc | 1716 | |
94215ccd | 1717 | spin_lock_irqsave(&ictx->kc_lock, flags); |
693508df | 1718 | ictx->last_keycode = kc; |
94215ccd | 1719 | spin_unlock_irqrestore(&ictx->kc_lock, flags); |
21677cfc JW |
1720 | |
1721 | return; | |
1722 | ||
21677cfc JW |
1723 | not_input_data: |
1724 | if (len != 8) { | |
1725 | dev_warn(dev, "imon %s: invalid incoming packet " | |
1726 | "size (len = %d, intf%d)\n", __func__, len, intf); | |
1727 | return; | |
1728 | } | |
1729 | ||
1730 | /* iMON 2.4G associate frame */ | |
1731 | if (buf[0] == 0x00 && | |
1732 | buf[2] == 0xFF && /* REFID */ | |
1733 | buf[3] == 0xFF && | |
1734 | buf[4] == 0xFF && | |
1735 | buf[5] == 0xFF && /* iMON 2.4G */ | |
1736 | ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */ | |
1737 | (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */ | |
1738 | dev_warn(dev, "%s: remote associated refid=%02X\n", | |
1739 | __func__, buf[1]); | |
f789bf40 | 1740 | ictx->rf_isassociating = false; |
21677cfc JW |
1741 | } |
1742 | } | |
1743 | ||
1744 | /** | |
1745 | * Callback function for USB core API: receive data | |
1746 | */ | |
1747 | static void usb_rx_callback_intf0(struct urb *urb) | |
1748 | { | |
1749 | struct imon_context *ictx; | |
1750 | int intfnum = 0; | |
1751 | ||
1752 | if (!urb) | |
1753 | return; | |
1754 | ||
1755 | ictx = (struct imon_context *)urb->context; | |
8791d63a | 1756 | if (!ictx) |
21677cfc JW |
1757 | return; |
1758 | ||
8791d63a JW |
1759 | /* |
1760 | * if we get a callback before we're done configuring the hardware, we | |
1761 | * can't yet process the data, as there's nowhere to send it, but we | |
1762 | * still need to submit a new rx URB to avoid wedging the hardware | |
1763 | */ | |
1764 | if (!ictx->dev_present_intf0) | |
1765 | goto out; | |
1766 | ||
21677cfc JW |
1767 | switch (urb->status) { |
1768 | case -ENOENT: /* usbcore unlink successful! */ | |
1769 | return; | |
1770 | ||
1771 | case -ESHUTDOWN: /* transport endpoint was shut down */ | |
1772 | break; | |
1773 | ||
1774 | case 0: | |
1775 | imon_incoming_packet(ictx, urb, intfnum); | |
1776 | break; | |
1777 | ||
1778 | default: | |
1779 | dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", | |
1780 | __func__, urb->status); | |
1781 | break; | |
1782 | } | |
1783 | ||
8791d63a | 1784 | out: |
21677cfc JW |
1785 | usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); |
1786 | } | |
1787 | ||
1788 | static void usb_rx_callback_intf1(struct urb *urb) | |
1789 | { | |
1790 | struct imon_context *ictx; | |
1791 | int intfnum = 1; | |
1792 | ||
1793 | if (!urb) | |
1794 | return; | |
1795 | ||
1796 | ictx = (struct imon_context *)urb->context; | |
8791d63a | 1797 | if (!ictx) |
21677cfc JW |
1798 | return; |
1799 | ||
8791d63a JW |
1800 | /* |
1801 | * if we get a callback before we're done configuring the hardware, we | |
1802 | * can't yet process the data, as there's nowhere to send it, but we | |
1803 | * still need to submit a new rx URB to avoid wedging the hardware | |
1804 | */ | |
1805 | if (!ictx->dev_present_intf1) | |
1806 | goto out; | |
1807 | ||
21677cfc JW |
1808 | switch (urb->status) { |
1809 | case -ENOENT: /* usbcore unlink successful! */ | |
1810 | return; | |
1811 | ||
1812 | case -ESHUTDOWN: /* transport endpoint was shut down */ | |
1813 | break; | |
1814 | ||
1815 | case 0: | |
1816 | imon_incoming_packet(ictx, urb, intfnum); | |
1817 | break; | |
1818 | ||
1819 | default: | |
1820 | dev_warn(ictx->dev, "imon %s: status(%d): ignored\n", | |
1821 | __func__, urb->status); | |
1822 | break; | |
1823 | } | |
1824 | ||
8791d63a | 1825 | out: |
21677cfc JW |
1826 | usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); |
1827 | } | |
1828 | ||
04292fc0 JW |
1829 | /* |
1830 | * The 0x15c2:0xffdc device ID was used for umpteen different imon | |
1831 | * devices, and all of them constantly spew interrupts, even when there | |
1832 | * is no actual data to report. However, byte 6 of this buffer looks like | |
1833 | * its unique across device variants, so we're trying to key off that to | |
1834 | * figure out which display type (if any) and what IR protocol the device | |
1835 | * actually supports. These devices have their IR protocol hard-coded into | |
1836 | * their firmware, they can't be changed on the fly like the newer hardware. | |
1837 | */ | |
1838 | static void imon_get_ffdc_type(struct imon_context *ictx) | |
1839 | { | |
1840 | u8 ffdc_cfg_byte = ictx->usb_rx_buf[6]; | |
1841 | u8 detected_display_type = IMON_DISPLAY_TYPE_NONE; | |
c003ab1b | 1842 | u64 allowed_protos = RC_BIT_OTHER; |
04292fc0 JW |
1843 | |
1844 | switch (ffdc_cfg_byte) { | |
1845 | /* iMON Knob, no display, iMON IR + vol knob */ | |
1846 | case 0x21: | |
1847 | dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR"); | |
1848 | ictx->display_supported = false; | |
1849 | break; | |
1850 | /* iMON 2.4G LT (usb stick), no display, iMON RF */ | |
1851 | case 0x4e: | |
1852 | dev_info(ictx->dev, "0xffdc iMON 2.4G LT, iMON RF"); | |
1853 | ictx->display_supported = false; | |
1854 | ictx->rf_device = true; | |
1855 | break; | |
1856 | /* iMON VFD, no IR (does have vol knob tho) */ | |
1857 | case 0x35: | |
1858 | dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR"); | |
1859 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | |
1860 | break; | |
1861 | /* iMON VFD, iMON IR */ | |
1862 | case 0x24: | |
1863 | case 0x85: | |
1864 | dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR"); | |
1865 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | |
1866 | break; | |
1867 | /* iMON VFD, MCE IR */ | |
443b3919 | 1868 | case 0x46: |
842071c9 | 1869 | case 0x7e: |
04292fc0 JW |
1870 | case 0x9e: |
1871 | dev_info(ictx->dev, "0xffdc iMON VFD, MCE IR"); | |
1872 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | |
c003ab1b | 1873 | allowed_protos = RC_BIT_RC6_MCE; |
04292fc0 JW |
1874 | break; |
1875 | /* iMON LCD, MCE IR */ | |
1876 | case 0x9f: | |
1877 | dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR"); | |
1878 | detected_display_type = IMON_DISPLAY_TYPE_LCD; | |
c003ab1b | 1879 | allowed_protos = RC_BIT_RC6_MCE; |
04292fc0 JW |
1880 | break; |
1881 | default: | |
1882 | dev_info(ictx->dev, "Unknown 0xffdc device, " | |
1883 | "defaulting to VFD and iMON IR"); | |
1884 | detected_display_type = IMON_DISPLAY_TYPE_VFD; | |
372b4249 JW |
1885 | /* We don't know which one it is, allow user to set the |
1886 | * RC6 one from userspace if OTHER wasn't correct. */ | |
c003ab1b | 1887 | allowed_protos |= RC_BIT_RC6_MCE; |
04292fc0 JW |
1888 | break; |
1889 | } | |
1890 | ||
1891 | printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte); | |
1892 | ||
1893 | ictx->display_type = detected_display_type; | |
52b66144 | 1894 | ictx->rc_type = allowed_protos; |
04292fc0 JW |
1895 | } |
1896 | ||
1897 | static void imon_set_display_type(struct imon_context *ictx) | |
1898 | { | |
1899 | u8 configured_display_type = IMON_DISPLAY_TYPE_VFD; | |
1900 | ||
1901 | /* | |
1902 | * Try to auto-detect the type of display if the user hasn't set | |
1903 | * it by hand via the display_type modparam. Default is VFD. | |
1904 | */ | |
1905 | ||
1906 | if (display_type == IMON_DISPLAY_TYPE_AUTO) { | |
1907 | switch (ictx->product) { | |
1908 | case 0xffdc: | |
1909 | /* set in imon_get_ffdc_type() */ | |
1910 | configured_display_type = ictx->display_type; | |
1911 | break; | |
1912 | case 0x0034: | |
1913 | case 0x0035: | |
1914 | configured_display_type = IMON_DISPLAY_TYPE_VGA; | |
1915 | break; | |
1916 | case 0x0038: | |
1917 | case 0x0039: | |
1918 | case 0x0045: | |
1919 | configured_display_type = IMON_DISPLAY_TYPE_LCD; | |
1920 | break; | |
1921 | case 0x003c: | |
1922 | case 0x0041: | |
1923 | case 0x0042: | |
1924 | case 0x0043: | |
1925 | configured_display_type = IMON_DISPLAY_TYPE_NONE; | |
1926 | ictx->display_supported = false; | |
1927 | break; | |
1928 | case 0x0036: | |
1929 | case 0x0044: | |
1930 | default: | |
1931 | configured_display_type = IMON_DISPLAY_TYPE_VFD; | |
1932 | break; | |
1933 | } | |
1934 | } else { | |
1935 | configured_display_type = display_type; | |
1936 | if (display_type == IMON_DISPLAY_TYPE_NONE) | |
1937 | ictx->display_supported = false; | |
1938 | else | |
1939 | ictx->display_supported = true; | |
1940 | dev_info(ictx->dev, "%s: overriding display type to %d via " | |
1941 | "modparam\n", __func__, display_type); | |
1942 | } | |
1943 | ||
1944 | ictx->display_type = configured_display_type; | |
1945 | } | |
1946 | ||
d8b4b582 | 1947 | static struct rc_dev *imon_init_rdev(struct imon_context *ictx) |
eaf2bcc9 | 1948 | { |
d8b4b582 | 1949 | struct rc_dev *rdev; |
eaf2bcc9 | 1950 | int ret; |
04292fc0 JW |
1951 | const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00, |
1952 | 0x00, 0x00, 0x00, 0x88 }; | |
eaf2bcc9 | 1953 | |
d8b4b582 DH |
1954 | rdev = rc_allocate_device(); |
1955 | if (!rdev) { | |
eaf2bcc9 DH |
1956 | dev_err(ictx->dev, "remote control dev allocation failed\n"); |
1957 | goto out; | |
1958 | } | |
1959 | ||
1960 | snprintf(ictx->name_rdev, sizeof(ictx->name_rdev), | |
1961 | "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product); | |
1962 | usb_make_path(ictx->usbdev_intf0, ictx->phys_rdev, | |
1963 | sizeof(ictx->phys_rdev)); | |
1964 | strlcat(ictx->phys_rdev, "/input0", sizeof(ictx->phys_rdev)); | |
1965 | ||
d8b4b582 DH |
1966 | rdev->input_name = ictx->name_rdev; |
1967 | rdev->input_phys = ictx->phys_rdev; | |
1968 | usb_to_input_id(ictx->usbdev_intf0, &rdev->input_id); | |
eaf2bcc9 | 1969 | rdev->dev.parent = ictx->dev; |
eaf2bcc9 | 1970 | |
d8b4b582 DH |
1971 | rdev->priv = ictx; |
1972 | rdev->driver_type = RC_DRIVER_SCANCODE; | |
c5540fbb | 1973 | rdev->allowed_protocols = RC_BIT_OTHER | RC_BIT_RC6_MCE; /* iMON PAD or MCE */ |
d8b4b582 DH |
1974 | rdev->change_protocol = imon_ir_change_protocol; |
1975 | rdev->driver_name = MOD_NAME; | |
eaf2bcc9 | 1976 | |
04292fc0 JW |
1977 | /* Enable front-panel buttons and/or knobs */ |
1978 | memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet)); | |
1979 | ret = send_packet(ictx); | |
1980 | /* Not fatal, but warn about it */ | |
1981 | if (ret) | |
1982 | dev_info(ictx->dev, "panel buttons/knobs setup failed\n"); | |
1983 | ||
7d2edfc2 | 1984 | if (ictx->product == 0xffdc) { |
04292fc0 | 1985 | imon_get_ffdc_type(ictx); |
c5540fbb | 1986 | rdev->allowed_protocols = ictx->rc_type; |
7d2edfc2 | 1987 | } |
04292fc0 JW |
1988 | |
1989 | imon_set_display_type(ictx); | |
1990 | ||
c003ab1b | 1991 | if (ictx->rc_type == RC_BIT_RC6_MCE) |
7d2edfc2 JW |
1992 | rdev->map_name = RC_MAP_IMON_MCE; |
1993 | else | |
1994 | rdev->map_name = RC_MAP_IMON_PAD; | |
1995 | ||
d8b4b582 | 1996 | ret = rc_register_device(rdev); |
eaf2bcc9 DH |
1997 | if (ret < 0) { |
1998 | dev_err(ictx->dev, "remote input dev register failed\n"); | |
1999 | goto out; | |
2000 | } | |
2001 | ||
2002 | return rdev; | |
2003 | ||
2004 | out: | |
d8b4b582 | 2005 | rc_free_device(rdev); |
eaf2bcc9 DH |
2006 | return NULL; |
2007 | } | |
2008 | ||
21677cfc JW |
2009 | static struct input_dev *imon_init_idev(struct imon_context *ictx) |
2010 | { | |
0d8053f2 | 2011 | struct imon_panel_key_table *key_table = ictx->dev_descr->key_table; |
21677cfc | 2012 | struct input_dev *idev; |
21677cfc | 2013 | int ret, i; |
21677cfc JW |
2014 | |
2015 | idev = input_allocate_device(); | |
da4a7339 | 2016 | if (!idev) |
eaf2bcc9 | 2017 | goto out; |
21677cfc | 2018 | |
21677cfc | 2019 | snprintf(ictx->name_idev, sizeof(ictx->name_idev), |
eaf2bcc9 DH |
2020 | "iMON Panel, Knob and Mouse(%04x:%04x)", |
2021 | ictx->vendor, ictx->product); | |
21677cfc JW |
2022 | idev->name = ictx->name_idev; |
2023 | ||
2024 | usb_make_path(ictx->usbdev_intf0, ictx->phys_idev, | |
2025 | sizeof(ictx->phys_idev)); | |
eaf2bcc9 | 2026 | strlcat(ictx->phys_idev, "/input1", sizeof(ictx->phys_idev)); |
21677cfc JW |
2027 | idev->phys = ictx->phys_idev; |
2028 | ||
db190fc1 | 2029 | idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL); |
21677cfc JW |
2030 | |
2031 | idev->keybit[BIT_WORD(BTN_MOUSE)] = | |
2032 | BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); | |
2033 | idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) | | |
2034 | BIT_MASK(REL_WHEEL); | |
2035 | ||
2036 | /* panel and/or knob code support */ | |
0d8053f2 UE |
2037 | for (i = 0; key_table[i].hw_code != 0; i++) { |
2038 | u32 kc = key_table[i].keycode; | |
21677cfc JW |
2039 | __set_bit(kc, idev->keybit); |
2040 | } | |
2041 | ||
21677cfc JW |
2042 | usb_to_input_id(ictx->usbdev_intf0, &idev->id); |
2043 | idev->dev.parent = ictx->dev; | |
eaf2bcc9 | 2044 | input_set_drvdata(idev, ictx); |
21677cfc | 2045 | |
eaf2bcc9 | 2046 | ret = input_register_device(idev); |
21677cfc | 2047 | if (ret < 0) { |
eaf2bcc9 DH |
2048 | dev_err(ictx->dev, "input dev register failed\n"); |
2049 | goto out; | |
21677cfc JW |
2050 | } |
2051 | ||
2052 | return idev; | |
2053 | ||
eaf2bcc9 | 2054 | out: |
21677cfc | 2055 | input_free_device(idev); |
21677cfc JW |
2056 | return NULL; |
2057 | } | |
2058 | ||
2059 | static struct input_dev *imon_init_touch(struct imon_context *ictx) | |
2060 | { | |
2061 | struct input_dev *touch; | |
2062 | int ret; | |
2063 | ||
2064 | touch = input_allocate_device(); | |
da4a7339 | 2065 | if (!touch) |
21677cfc | 2066 | goto touch_alloc_failed; |
21677cfc JW |
2067 | |
2068 | snprintf(ictx->name_touch, sizeof(ictx->name_touch), | |
2069 | "iMON USB Touchscreen (%04x:%04x)", | |
2070 | ictx->vendor, ictx->product); | |
2071 | touch->name = ictx->name_touch; | |
2072 | ||
2073 | usb_make_path(ictx->usbdev_intf1, ictx->phys_touch, | |
2074 | sizeof(ictx->phys_touch)); | |
eaf2bcc9 | 2075 | strlcat(ictx->phys_touch, "/input2", sizeof(ictx->phys_touch)); |
21677cfc JW |
2076 | touch->phys = ictx->phys_touch; |
2077 | ||
2078 | touch->evbit[0] = | |
2079 | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); | |
2080 | touch->keybit[BIT_WORD(BTN_TOUCH)] = | |
2081 | BIT_MASK(BTN_TOUCH); | |
2082 | input_set_abs_params(touch, ABS_X, | |
2083 | 0x00, 0xfff, 0, 0); | |
2084 | input_set_abs_params(touch, ABS_Y, | |
2085 | 0x00, 0xfff, 0, 0); | |
2086 | ||
2087 | input_set_drvdata(touch, ictx); | |
2088 | ||
2089 | usb_to_input_id(ictx->usbdev_intf1, &touch->id); | |
2090 | touch->dev.parent = ictx->dev; | |
2091 | ret = input_register_device(touch); | |
2092 | if (ret < 0) { | |
2093 | dev_info(ictx->dev, "touchscreen input dev register failed\n"); | |
2094 | goto touch_register_failed; | |
2095 | } | |
2096 | ||
2097 | return touch; | |
2098 | ||
2099 | touch_register_failed: | |
aeb35ebc | 2100 | input_free_device(touch); |
21677cfc JW |
2101 | |
2102 | touch_alloc_failed: | |
2103 | return NULL; | |
2104 | } | |
2105 | ||
2106 | static bool imon_find_endpoints(struct imon_context *ictx, | |
2107 | struct usb_host_interface *iface_desc) | |
2108 | { | |
2109 | struct usb_endpoint_descriptor *ep; | |
2110 | struct usb_endpoint_descriptor *rx_endpoint = NULL; | |
2111 | struct usb_endpoint_descriptor *tx_endpoint = NULL; | |
2112 | int ifnum = iface_desc->desc.bInterfaceNumber; | |
2113 | int num_endpts = iface_desc->desc.bNumEndpoints; | |
2114 | int i, ep_dir, ep_type; | |
f789bf40 JW |
2115 | bool ir_ep_found = false; |
2116 | bool display_ep_found = false; | |
2117 | bool tx_control = false; | |
21677cfc JW |
2118 | |
2119 | /* | |
2120 | * Scan the endpoint list and set: | |
2121 | * first input endpoint = IR endpoint | |
2122 | * first output endpoint = display endpoint | |
2123 | */ | |
2124 | for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) { | |
2125 | ep = &iface_desc->endpoint[i].desc; | |
2126 | ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK; | |
9408d8f0 | 2127 | ep_type = usb_endpoint_type(ep); |
21677cfc JW |
2128 | |
2129 | if (!ir_ep_found && ep_dir == USB_DIR_IN && | |
2130 | ep_type == USB_ENDPOINT_XFER_INT) { | |
2131 | ||
2132 | rx_endpoint = ep; | |
f789bf40 | 2133 | ir_ep_found = true; |
21677cfc JW |
2134 | dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__); |
2135 | ||
2136 | } else if (!display_ep_found && ep_dir == USB_DIR_OUT && | |
2137 | ep_type == USB_ENDPOINT_XFER_INT) { | |
2138 | tx_endpoint = ep; | |
f789bf40 | 2139 | display_ep_found = true; |
21677cfc JW |
2140 | dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__); |
2141 | } | |
2142 | } | |
2143 | ||
2144 | if (ifnum == 0) { | |
2145 | ictx->rx_endpoint_intf0 = rx_endpoint; | |
2146 | /* | |
2147 | * tx is used to send characters to lcd/vfd, associate RF | |
2148 | * remotes, set IR protocol, and maybe more... | |
2149 | */ | |
2150 | ictx->tx_endpoint = tx_endpoint; | |
2151 | } else { | |
2152 | ictx->rx_endpoint_intf1 = rx_endpoint; | |
2153 | } | |
2154 | ||
2155 | /* | |
2156 | * If we didn't find a display endpoint, this is probably one of the | |
2157 | * newer iMON devices that use control urb instead of interrupt | |
2158 | */ | |
2159 | if (!display_ep_found) { | |
f789bf40 JW |
2160 | tx_control = true; |
2161 | display_ep_found = true; | |
21677cfc JW |
2162 | dev_dbg(ictx->dev, "%s: device uses control endpoint, not " |
2163 | "interface OUT endpoint\n", __func__); | |
2164 | } | |
2165 | ||
2166 | /* | |
2167 | * Some iMON receivers have no display. Unfortunately, it seems | |
2168 | * that SoundGraph recycles device IDs between devices both with | |
2169 | * and without... :\ | |
2170 | */ | |
2171 | if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) { | |
f789bf40 | 2172 | display_ep_found = false; |
21677cfc JW |
2173 | dev_dbg(ictx->dev, "%s: device has no display\n", __func__); |
2174 | } | |
2175 | ||
2176 | /* | |
2177 | * iMON Touch devices have a VGA touchscreen, but no "display", as | |
2178 | * that refers to e.g. /dev/lcd0 (a character device LCD or VFD). | |
2179 | */ | |
2180 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | |
f789bf40 | 2181 | display_ep_found = false; |
21677cfc JW |
2182 | dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__); |
2183 | } | |
2184 | ||
2185 | /* Input endpoint is mandatory */ | |
2186 | if (!ir_ep_found) | |
e2302501 | 2187 | pr_err("no valid input (IR) endpoint found\n"); |
21677cfc JW |
2188 | |
2189 | ictx->tx_control = tx_control; | |
2190 | ||
2191 | if (display_ep_found) | |
2192 | ictx->display_supported = true; | |
2193 | ||
2194 | return ir_ep_found; | |
2195 | ||
2196 | } | |
2197 | ||
f7d141b3 KB |
2198 | static struct imon_context *imon_init_intf0(struct usb_interface *intf, |
2199 | const struct usb_device_id *id) | |
21677cfc JW |
2200 | { |
2201 | struct imon_context *ictx; | |
2202 | struct urb *rx_urb; | |
2203 | struct urb *tx_urb; | |
2204 | struct device *dev = &intf->dev; | |
2205 | struct usb_host_interface *iface_desc; | |
1f71baef | 2206 | int ret = -ENOMEM; |
21677cfc JW |
2207 | |
2208 | ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL); | |
2209 | if (!ictx) { | |
2210 | dev_err(dev, "%s: kzalloc failed for context", __func__); | |
2211 | goto exit; | |
2212 | } | |
2213 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2214 | if (!rx_urb) { | |
2215 | dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__); | |
2216 | goto rx_urb_alloc_failed; | |
2217 | } | |
2218 | tx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2219 | if (!tx_urb) { | |
2220 | dev_err(dev, "%s: usb_alloc_urb failed for display urb", | |
2221 | __func__); | |
2222 | goto tx_urb_alloc_failed; | |
2223 | } | |
2224 | ||
2225 | mutex_init(&ictx->lock); | |
693508df | 2226 | spin_lock_init(&ictx->kc_lock); |
21677cfc JW |
2227 | |
2228 | mutex_lock(&ictx->lock); | |
2229 | ||
2230 | ictx->dev = dev; | |
2231 | ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf)); | |
21677cfc JW |
2232 | ictx->rx_urb_intf0 = rx_urb; |
2233 | ictx->tx_urb = tx_urb; | |
bbe4690f | 2234 | ictx->rf_device = false; |
21677cfc JW |
2235 | |
2236 | ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor); | |
2237 | ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct); | |
2238 | ||
0d8053f2 UE |
2239 | /* save drive info for later accessing the panel/knob key table */ |
2240 | ictx->dev_descr = (struct imon_usb_dev_descr *)id->driver_info; | |
f7d141b3 | 2241 | /* default send_packet delay is 5ms but some devices need more */ |
0d8053f2 UE |
2242 | ictx->send_packet_delay = ictx->dev_descr->flags & |
2243 | IMON_NEED_20MS_PKT_DELAY ? 20 : 5; | |
f7d141b3 | 2244 | |
1f71baef | 2245 | ret = -ENODEV; |
21677cfc | 2246 | iface_desc = intf->cur_altsetting; |
1f71baef | 2247 | if (!imon_find_endpoints(ictx, iface_desc)) { |
21677cfc | 2248 | goto find_endpoint_failed; |
1f71baef | 2249 | } |
21677cfc | 2250 | |
21677cfc JW |
2251 | usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, |
2252 | usb_rcvintpipe(ictx->usbdev_intf0, | |
2253 | ictx->rx_endpoint_intf0->bEndpointAddress), | |
2254 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | |
2255 | usb_rx_callback_intf0, ictx, | |
2256 | ictx->rx_endpoint_intf0->bInterval); | |
2257 | ||
2258 | ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL); | |
2259 | if (ret) { | |
e2302501 | 2260 | pr_err("usb_submit_urb failed for intf0 (%d)\n", ret); |
21677cfc JW |
2261 | goto urb_submit_failed; |
2262 | } | |
2263 | ||
9ad77eb5 JW |
2264 | ictx->idev = imon_init_idev(ictx); |
2265 | if (!ictx->idev) { | |
2266 | dev_err(dev, "%s: input device setup failed\n", __func__); | |
2267 | goto idev_setup_failed; | |
2268 | } | |
2269 | ||
2270 | ictx->rdev = imon_init_rdev(ictx); | |
2271 | if (!ictx->rdev) { | |
2272 | dev_err(dev, "%s: rc device setup failed\n", __func__); | |
2273 | goto rdev_setup_failed; | |
2274 | } | |
2275 | ||
6f6b90c9 JW |
2276 | ictx->dev_present_intf0 = true; |
2277 | ||
23ef710e | 2278 | mutex_unlock(&ictx->lock); |
21677cfc JW |
2279 | return ictx; |
2280 | ||
eaf2bcc9 DH |
2281 | rdev_setup_failed: |
2282 | input_unregister_device(ictx->idev); | |
21677cfc | 2283 | idev_setup_failed: |
9ad77eb5 JW |
2284 | usb_kill_urb(ictx->rx_urb_intf0); |
2285 | urb_submit_failed: | |
21677cfc | 2286 | find_endpoint_failed: |
e87cb470 | 2287 | usb_put_dev(ictx->usbdev_intf0); |
21677cfc JW |
2288 | mutex_unlock(&ictx->lock); |
2289 | usb_free_urb(tx_urb); | |
2290 | tx_urb_alloc_failed: | |
2291 | usb_free_urb(rx_urb); | |
2292 | rx_urb_alloc_failed: | |
2293 | kfree(ictx); | |
2294 | exit: | |
2295 | dev_err(dev, "unable to initialize intf0, err %d\n", ret); | |
2296 | ||
2297 | return NULL; | |
2298 | } | |
2299 | ||
2300 | static struct imon_context *imon_init_intf1(struct usb_interface *intf, | |
2301 | struct imon_context *ictx) | |
2302 | { | |
2303 | struct urb *rx_urb; | |
2304 | struct usb_host_interface *iface_desc; | |
1f71baef | 2305 | int ret = -ENOMEM; |
21677cfc JW |
2306 | |
2307 | rx_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2308 | if (!rx_urb) { | |
e2302501 | 2309 | pr_err("usb_alloc_urb failed for IR urb\n"); |
21677cfc JW |
2310 | goto rx_urb_alloc_failed; |
2311 | } | |
2312 | ||
2313 | mutex_lock(&ictx->lock); | |
2314 | ||
2315 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | |
2316 | init_timer(&ictx->ttimer); | |
2317 | ictx->ttimer.data = (unsigned long)ictx; | |
2318 | ictx->ttimer.function = imon_touch_display_timeout; | |
2319 | } | |
2320 | ||
2321 | ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf)); | |
21677cfc JW |
2322 | ictx->rx_urb_intf1 = rx_urb; |
2323 | ||
1f71baef | 2324 | ret = -ENODEV; |
21677cfc JW |
2325 | iface_desc = intf->cur_altsetting; |
2326 | if (!imon_find_endpoints(ictx, iface_desc)) | |
2327 | goto find_endpoint_failed; | |
2328 | ||
2329 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { | |
2330 | ictx->touch = imon_init_touch(ictx); | |
2331 | if (!ictx->touch) | |
2332 | goto touch_setup_failed; | |
2333 | } else | |
2334 | ictx->touch = NULL; | |
2335 | ||
2336 | usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, | |
2337 | usb_rcvintpipe(ictx->usbdev_intf1, | |
2338 | ictx->rx_endpoint_intf1->bEndpointAddress), | |
2339 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | |
2340 | usb_rx_callback_intf1, ictx, | |
2341 | ictx->rx_endpoint_intf1->bInterval); | |
2342 | ||
2343 | ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL); | |
2344 | ||
2345 | if (ret) { | |
e2302501 | 2346 | pr_err("usb_submit_urb failed for intf1 (%d)\n", ret); |
21677cfc JW |
2347 | goto urb_submit_failed; |
2348 | } | |
2349 | ||
6f6b90c9 JW |
2350 | ictx->dev_present_intf1 = true; |
2351 | ||
23ef710e | 2352 | mutex_unlock(&ictx->lock); |
21677cfc JW |
2353 | return ictx; |
2354 | ||
2355 | urb_submit_failed: | |
20cd1959 | 2356 | if (ictx->touch) |
21677cfc | 2357 | input_unregister_device(ictx->touch); |
21677cfc JW |
2358 | touch_setup_failed: |
2359 | find_endpoint_failed: | |
e87cb470 | 2360 | usb_put_dev(ictx->usbdev_intf1); |
21677cfc JW |
2361 | mutex_unlock(&ictx->lock); |
2362 | usb_free_urb(rx_urb); | |
2363 | rx_urb_alloc_failed: | |
8791d63a | 2364 | dev_err(ictx->dev, "unable to initialize intf1, err %d\n", ret); |
21677cfc JW |
2365 | |
2366 | return NULL; | |
2367 | } | |
2368 | ||
21677cfc JW |
2369 | static void imon_init_display(struct imon_context *ictx, |
2370 | struct usb_interface *intf) | |
2371 | { | |
2372 | int ret; | |
2373 | ||
2374 | dev_dbg(ictx->dev, "Registering iMON display with sysfs\n"); | |
2375 | ||
2376 | /* set up sysfs entry for built-in clock */ | |
6aa209e4 | 2377 | ret = sysfs_create_group(&intf->dev.kobj, &imon_display_attr_group); |
21677cfc JW |
2378 | if (ret) |
2379 | dev_err(ictx->dev, "Could not create display sysfs " | |
2380 | "entries(%d)", ret); | |
2381 | ||
2382 | if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) | |
2383 | ret = usb_register_dev(intf, &imon_lcd_class); | |
2384 | else | |
2385 | ret = usb_register_dev(intf, &imon_vfd_class); | |
2386 | if (ret) | |
2387 | /* Not a fatal error, so ignore */ | |
2388 | dev_info(ictx->dev, "could not get a minor number for " | |
2389 | "display\n"); | |
2390 | ||
2391 | } | |
2392 | ||
2393 | /** | |
2394 | * Callback function for USB core API: Probe | |
2395 | */ | |
4c62e976 GKH |
2396 | static int imon_probe(struct usb_interface *interface, |
2397 | const struct usb_device_id *id) | |
21677cfc JW |
2398 | { |
2399 | struct usb_device *usbdev = NULL; | |
2400 | struct usb_host_interface *iface_desc = NULL; | |
2401 | struct usb_interface *first_if; | |
2402 | struct device *dev = &interface->dev; | |
76a2d21d | 2403 | int ifnum, sysfs_err; |
21677cfc JW |
2404 | int ret = 0; |
2405 | struct imon_context *ictx = NULL; | |
2406 | struct imon_context *first_if_ctx = NULL; | |
2407 | u16 vendor, product; | |
21677cfc | 2408 | |
21677cfc JW |
2409 | usbdev = usb_get_dev(interface_to_usbdev(interface)); |
2410 | iface_desc = interface->cur_altsetting; | |
2411 | ifnum = iface_desc->desc.bInterfaceNumber; | |
2412 | vendor = le16_to_cpu(usbdev->descriptor.idVendor); | |
2413 | product = le16_to_cpu(usbdev->descriptor.idProduct); | |
2414 | ||
2415 | dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n", | |
2416 | __func__, vendor, product, ifnum); | |
2417 | ||
2418 | /* prevent races probing devices w/multiple interfaces */ | |
2419 | mutex_lock(&driver_lock); | |
2420 | ||
2421 | first_if = usb_ifnum_to_if(usbdev, 0); | |
8350e155 | 2422 | first_if_ctx = usb_get_intfdata(first_if); |
21677cfc JW |
2423 | |
2424 | if (ifnum == 0) { | |
f7d141b3 | 2425 | ictx = imon_init_intf0(interface, id); |
21677cfc | 2426 | if (!ictx) { |
e2302501 | 2427 | pr_err("failed to initialize context!\n"); |
21677cfc JW |
2428 | ret = -ENODEV; |
2429 | goto fail; | |
2430 | } | |
2431 | ||
21677cfc | 2432 | } else { |
7d54ba0e KB |
2433 | /* this is the secondary interface on the device */ |
2434 | ||
2435 | /* fail early if first intf failed to register */ | |
2436 | if (!first_if_ctx) { | |
2437 | ret = -ENODEV; | |
2438 | goto fail; | |
2439 | } | |
2440 | ||
21677cfc JW |
2441 | ictx = imon_init_intf1(interface, first_if_ctx); |
2442 | if (!ictx) { | |
e2302501 | 2443 | pr_err("failed to attach to context!\n"); |
21677cfc JW |
2444 | ret = -ENODEV; |
2445 | goto fail; | |
2446 | } | |
2447 | ||
2448 | } | |
2449 | ||
2450 | usb_set_intfdata(interface, ictx); | |
2451 | ||
2452 | if (ifnum == 0) { | |
23ef710e JW |
2453 | mutex_lock(&ictx->lock); |
2454 | ||
bbe4690f JW |
2455 | if (product == 0xffdc && ictx->rf_device) { |
2456 | sysfs_err = sysfs_create_group(&interface->dev.kobj, | |
6aa209e4 | 2457 | &imon_rf_attr_group); |
bbe4690f | 2458 | if (sysfs_err) |
e2302501 JP |
2459 | pr_err("Could not create RF sysfs entries(%d)\n", |
2460 | sysfs_err); | |
bbe4690f JW |
2461 | } |
2462 | ||
21677cfc JW |
2463 | if (ictx->display_supported) |
2464 | imon_init_display(ictx, interface); | |
23ef710e JW |
2465 | |
2466 | mutex_unlock(&ictx->lock); | |
21677cfc JW |
2467 | } |
2468 | ||
21677cfc JW |
2469 | dev_info(dev, "iMON device (%04x:%04x, intf%d) on " |
2470 | "usb<%d:%d> initialized\n", vendor, product, ifnum, | |
2471 | usbdev->bus->busnum, usbdev->devnum); | |
2472 | ||
21677cfc | 2473 | mutex_unlock(&driver_lock); |
e87cb470 | 2474 | usb_put_dev(usbdev); |
21677cfc JW |
2475 | |
2476 | return 0; | |
2477 | ||
2478 | fail: | |
2479 | mutex_unlock(&driver_lock); | |
e87cb470 | 2480 | usb_put_dev(usbdev); |
21677cfc JW |
2481 | dev_err(dev, "unable to register, err %d\n", ret); |
2482 | ||
2483 | return ret; | |
2484 | } | |
2485 | ||
2486 | /** | |
2487 | * Callback function for USB core API: disconnect | |
2488 | */ | |
4c62e976 | 2489 | static void imon_disconnect(struct usb_interface *interface) |
21677cfc JW |
2490 | { |
2491 | struct imon_context *ictx; | |
2492 | struct device *dev; | |
2493 | int ifnum; | |
2494 | ||
2495 | /* prevent races with multi-interface device probing and display_open */ | |
2496 | mutex_lock(&driver_lock); | |
2497 | ||
2498 | ictx = usb_get_intfdata(interface); | |
2499 | dev = ictx->dev; | |
2500 | ifnum = interface->cur_altsetting->desc.bInterfaceNumber; | |
2501 | ||
21677cfc JW |
2502 | /* |
2503 | * sysfs_remove_group is safe to call even if sysfs_create_group | |
2504 | * hasn't been called | |
2505 | */ | |
6aa209e4 JW |
2506 | sysfs_remove_group(&interface->dev.kobj, &imon_display_attr_group); |
2507 | sysfs_remove_group(&interface->dev.kobj, &imon_rf_attr_group); | |
21677cfc JW |
2508 | |
2509 | usb_set_intfdata(interface, NULL); | |
2510 | ||
2511 | /* Abort ongoing write */ | |
2512 | if (ictx->tx.busy) { | |
2513 | usb_kill_urb(ictx->tx_urb); | |
2514 | complete_all(&ictx->tx.finished); | |
2515 | } | |
2516 | ||
2517 | if (ifnum == 0) { | |
f789bf40 | 2518 | ictx->dev_present_intf0 = false; |
21677cfc | 2519 | usb_kill_urb(ictx->rx_urb_intf0); |
e87cb470 | 2520 | usb_put_dev(ictx->usbdev_intf0); |
eaf2bcc9 | 2521 | input_unregister_device(ictx->idev); |
d8b4b582 | 2522 | rc_unregister_device(ictx->rdev); |
21677cfc JW |
2523 | if (ictx->display_supported) { |
2524 | if (ictx->display_type == IMON_DISPLAY_TYPE_LCD) | |
2525 | usb_deregister_dev(interface, &imon_lcd_class); | |
76a2d21d | 2526 | else if (ictx->display_type == IMON_DISPLAY_TYPE_VFD) |
21677cfc JW |
2527 | usb_deregister_dev(interface, &imon_vfd_class); |
2528 | } | |
2529 | } else { | |
f789bf40 | 2530 | ictx->dev_present_intf1 = false; |
21677cfc | 2531 | usb_kill_urb(ictx->rx_urb_intf1); |
e87cb470 | 2532 | usb_put_dev(ictx->usbdev_intf1); |
76a2d21d | 2533 | if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) { |
21677cfc | 2534 | input_unregister_device(ictx->touch); |
76a2d21d JW |
2535 | del_timer_sync(&ictx->ttimer); |
2536 | } | |
21677cfc JW |
2537 | } |
2538 | ||
76a2d21d JW |
2539 | if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) |
2540 | free_imon_context(ictx); | |
21677cfc JW |
2541 | |
2542 | mutex_unlock(&driver_lock); | |
2543 | ||
2544 | dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n", | |
2545 | __func__, ifnum); | |
2546 | } | |
2547 | ||
2548 | static int imon_suspend(struct usb_interface *intf, pm_message_t message) | |
2549 | { | |
2550 | struct imon_context *ictx = usb_get_intfdata(intf); | |
2551 | int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
2552 | ||
2553 | if (ifnum == 0) | |
2554 | usb_kill_urb(ictx->rx_urb_intf0); | |
2555 | else | |
2556 | usb_kill_urb(ictx->rx_urb_intf1); | |
2557 | ||
2558 | return 0; | |
2559 | } | |
2560 | ||
2561 | static int imon_resume(struct usb_interface *intf) | |
2562 | { | |
2563 | int rc = 0; | |
2564 | struct imon_context *ictx = usb_get_intfdata(intf); | |
2565 | int ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
2566 | ||
2567 | if (ifnum == 0) { | |
2568 | usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0, | |
2569 | usb_rcvintpipe(ictx->usbdev_intf0, | |
2570 | ictx->rx_endpoint_intf0->bEndpointAddress), | |
2571 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | |
2572 | usb_rx_callback_intf0, ictx, | |
2573 | ictx->rx_endpoint_intf0->bInterval); | |
2574 | ||
2575 | rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC); | |
2576 | ||
2577 | } else { | |
2578 | usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1, | |
2579 | usb_rcvintpipe(ictx->usbdev_intf1, | |
2580 | ictx->rx_endpoint_intf1->bEndpointAddress), | |
2581 | ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf), | |
2582 | usb_rx_callback_intf1, ictx, | |
2583 | ictx->rx_endpoint_intf1->bInterval); | |
2584 | ||
2585 | rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC); | |
2586 | } | |
2587 | ||
2588 | return rc; | |
2589 | } | |
2590 | ||
ecb3b2b3 | 2591 | module_usb_driver(imon_driver); |