Branch data Line data Source code
1 : : /*
2 : : * (c) 1999 Andreas Gal <gal@cs.uni-magdeburg.de>
3 : : * (c) 2000-2001 Vojtech Pavlik <vojtech@ucw.cz>
4 : : * (c) 2007-2009 Jiri Kosina
5 : : *
6 : : * HID debugging support
7 : : */
8 : :
9 : : /*
10 : : * This program is free software; you can redistribute it and/or modify
11 : : * it under the terms of the GNU General Public License as published by
12 : : * the Free Software Foundation; either version 2 of the License, or
13 : : * (at your option) any later version.
14 : : *
15 : : * This program is distributed in the hope that it will be useful,
16 : : * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 : : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 : : * GNU General Public License for more details.
19 : : *
20 : : * You should have received a copy of the GNU General Public License
21 : : * along with this program; if not, write to the Free Software
22 : : * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 : : *
24 : : * Should you need to contact me, the author, you can do so either by
25 : : * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
26 : : * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
27 : : */
28 : :
29 : : #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30 : :
31 : : #include <linux/debugfs.h>
32 : : #include <linux/seq_file.h>
33 : : #include <linux/sched.h>
34 : : #include <linux/export.h>
35 : : #include <linux/slab.h>
36 : : #include <linux/uaccess.h>
37 : : #include <linux/poll.h>
38 : :
39 : : #include <linux/hid.h>
40 : : #include <linux/hid-debug.h>
41 : :
42 : : static struct dentry *hid_debug_root;
43 : :
44 : : struct hid_usage_entry {
45 : : unsigned page;
46 : : unsigned usage;
47 : : const char *description;
48 : : };
49 : :
50 : : static const struct hid_usage_entry hid_usage_table[] = {
51 : : { 0, 0, "Undefined" },
52 : : { 1, 0, "GenericDesktop" },
53 : : {0, 0x01, "Pointer"},
54 : : {0, 0x02, "Mouse"},
55 : : {0, 0x04, "Joystick"},
56 : : {0, 0x05, "GamePad"},
57 : : {0, 0x06, "Keyboard"},
58 : : {0, 0x07, "Keypad"},
59 : : {0, 0x08, "MultiAxis"},
60 : : {0, 0x30, "X"},
61 : : {0, 0x31, "Y"},
62 : : {0, 0x32, "Z"},
63 : : {0, 0x33, "Rx"},
64 : : {0, 0x34, "Ry"},
65 : : {0, 0x35, "Rz"},
66 : : {0, 0x36, "Slider"},
67 : : {0, 0x37, "Dial"},
68 : : {0, 0x38, "Wheel"},
69 : : {0, 0x39, "HatSwitch"},
70 : : {0, 0x3a, "CountedBuffer"},
71 : : {0, 0x3b, "ByteCount"},
72 : : {0, 0x3c, "MotionWakeup"},
73 : : {0, 0x3d, "Start"},
74 : : {0, 0x3e, "Select"},
75 : : {0, 0x40, "Vx"},
76 : : {0, 0x41, "Vy"},
77 : : {0, 0x42, "Vz"},
78 : : {0, 0x43, "Vbrx"},
79 : : {0, 0x44, "Vbry"},
80 : : {0, 0x45, "Vbrz"},
81 : : {0, 0x46, "Vno"},
82 : : {0, 0x80, "SystemControl"},
83 : : {0, 0x81, "SystemPowerDown"},
84 : : {0, 0x82, "SystemSleep"},
85 : : {0, 0x83, "SystemWakeUp"},
86 : : {0, 0x84, "SystemContextMenu"},
87 : : {0, 0x85, "SystemMainMenu"},
88 : : {0, 0x86, "SystemAppMenu"},
89 : : {0, 0x87, "SystemMenuHelp"},
90 : : {0, 0x88, "SystemMenuExit"},
91 : : {0, 0x89, "SystemMenuSelect"},
92 : : {0, 0x8a, "SystemMenuRight"},
93 : : {0, 0x8b, "SystemMenuLeft"},
94 : : {0, 0x8c, "SystemMenuUp"},
95 : : {0, 0x8d, "SystemMenuDown"},
96 : : {0, 0x90, "D-PadUp"},
97 : : {0, 0x91, "D-PadDown"},
98 : : {0, 0x92, "D-PadRight"},
99 : : {0, 0x93, "D-PadLeft"},
100 : : { 2, 0, "Simulation" },
101 : : {0, 0xb0, "Aileron"},
102 : : {0, 0xb1, "AileronTrim"},
103 : : {0, 0xb2, "Anti-Torque"},
104 : : {0, 0xb3, "Autopilot"},
105 : : {0, 0xb4, "Chaff"},
106 : : {0, 0xb5, "Collective"},
107 : : {0, 0xb6, "DiveBrake"},
108 : : {0, 0xb7, "ElectronicCountermeasures"},
109 : : {0, 0xb8, "Elevator"},
110 : : {0, 0xb9, "ElevatorTrim"},
111 : : {0, 0xba, "Rudder"},
112 : : {0, 0xbb, "Throttle"},
113 : : {0, 0xbc, "FlightCommunications"},
114 : : {0, 0xbd, "FlareRelease"},
115 : : {0, 0xbe, "LandingGear"},
116 : : {0, 0xbf, "ToeBrake"},
117 : : { 6, 0, "GenericDeviceControls" },
118 : : {0, 0x20, "BatteryStrength" },
119 : : {0, 0x21, "WirelessChannel" },
120 : : {0, 0x22, "WirelessID" },
121 : : {0, 0x23, "DiscoverWirelessControl" },
122 : : {0, 0x24, "SecurityCodeCharacterEntered" },
123 : : {0, 0x25, "SecurityCodeCharactedErased" },
124 : : {0, 0x26, "SecurityCodeCleared" },
125 : : { 7, 0, "Keyboard" },
126 : : { 8, 0, "LED" },
127 : : {0, 0x01, "NumLock"},
128 : : {0, 0x02, "CapsLock"},
129 : : {0, 0x03, "ScrollLock"},
130 : : {0, 0x04, "Compose"},
131 : : {0, 0x05, "Kana"},
132 : : {0, 0x4b, "GenericIndicator"},
133 : : { 9, 0, "Button" },
134 : : { 10, 0, "Ordinal" },
135 : : { 12, 0, "Consumer" },
136 : : {0, 0x238, "HorizontalWheel"},
137 : : { 13, 0, "Digitizers" },
138 : : {0, 0x01, "Digitizer"},
139 : : {0, 0x02, "Pen"},
140 : : {0, 0x03, "LightPen"},
141 : : {0, 0x04, "TouchScreen"},
142 : : {0, 0x05, "TouchPad"},
143 : : {0, 0x20, "Stylus"},
144 : : {0, 0x21, "Puck"},
145 : : {0, 0x22, "Finger"},
146 : : {0, 0x30, "TipPressure"},
147 : : {0, 0x31, "BarrelPressure"},
148 : : {0, 0x32, "InRange"},
149 : : {0, 0x33, "Touch"},
150 : : {0, 0x34, "UnTouch"},
151 : : {0, 0x35, "Tap"},
152 : : {0, 0x39, "TabletFunctionKey"},
153 : : {0, 0x3a, "ProgramChangeKey"},
154 : : {0, 0x3c, "Invert"},
155 : : {0, 0x42, "TipSwitch"},
156 : : {0, 0x43, "SecondaryTipSwitch"},
157 : : {0, 0x44, "BarrelSwitch"},
158 : : {0, 0x45, "Eraser"},
159 : : {0, 0x46, "TabletPick"},
160 : : {0, 0x47, "Confidence"},
161 : : {0, 0x48, "Width"},
162 : : {0, 0x49, "Height"},
163 : : {0, 0x51, "ContactID"},
164 : : {0, 0x52, "InputMode"},
165 : : {0, 0x53, "DeviceIndex"},
166 : : {0, 0x54, "ContactCount"},
167 : : {0, 0x55, "ContactMaximumNumber"},
168 : : { 15, 0, "PhysicalInterfaceDevice" },
169 : : {0, 0x00, "Undefined"},
170 : : {0, 0x01, "Physical_Interface_Device"},
171 : : {0, 0x20, "Normal"},
172 : : {0, 0x21, "Set_Effect_Report"},
173 : : {0, 0x22, "Effect_Block_Index"},
174 : : {0, 0x23, "Parameter_Block_Offset"},
175 : : {0, 0x24, "ROM_Flag"},
176 : : {0, 0x25, "Effect_Type"},
177 : : {0, 0x26, "ET_Constant_Force"},
178 : : {0, 0x27, "ET_Ramp"},
179 : : {0, 0x28, "ET_Custom_Force_Data"},
180 : : {0, 0x30, "ET_Square"},
181 : : {0, 0x31, "ET_Sine"},
182 : : {0, 0x32, "ET_Triangle"},
183 : : {0, 0x33, "ET_Sawtooth_Up"},
184 : : {0, 0x34, "ET_Sawtooth_Down"},
185 : : {0, 0x40, "ET_Spring"},
186 : : {0, 0x41, "ET_Damper"},
187 : : {0, 0x42, "ET_Inertia"},
188 : : {0, 0x43, "ET_Friction"},
189 : : {0, 0x50, "Duration"},
190 : : {0, 0x51, "Sample_Period"},
191 : : {0, 0x52, "Gain"},
192 : : {0, 0x53, "Trigger_Button"},
193 : : {0, 0x54, "Trigger_Repeat_Interval"},
194 : : {0, 0x55, "Axes_Enable"},
195 : : {0, 0x56, "Direction_Enable"},
196 : : {0, 0x57, "Direction"},
197 : : {0, 0x58, "Type_Specific_Block_Offset"},
198 : : {0, 0x59, "Block_Type"},
199 : : {0, 0x5A, "Set_Envelope_Report"},
200 : : {0, 0x5B, "Attack_Level"},
201 : : {0, 0x5C, "Attack_Time"},
202 : : {0, 0x5D, "Fade_Level"},
203 : : {0, 0x5E, "Fade_Time"},
204 : : {0, 0x5F, "Set_Condition_Report"},
205 : : {0, 0x60, "CP_Offset"},
206 : : {0, 0x61, "Positive_Coefficient"},
207 : : {0, 0x62, "Negative_Coefficient"},
208 : : {0, 0x63, "Positive_Saturation"},
209 : : {0, 0x64, "Negative_Saturation"},
210 : : {0, 0x65, "Dead_Band"},
211 : : {0, 0x66, "Download_Force_Sample"},
212 : : {0, 0x67, "Isoch_Custom_Force_Enable"},
213 : : {0, 0x68, "Custom_Force_Data_Report"},
214 : : {0, 0x69, "Custom_Force_Data"},
215 : : {0, 0x6A, "Custom_Force_Vendor_Defined_Data"},
216 : : {0, 0x6B, "Set_Custom_Force_Report"},
217 : : {0, 0x6C, "Custom_Force_Data_Offset"},
218 : : {0, 0x6D, "Sample_Count"},
219 : : {0, 0x6E, "Set_Periodic_Report"},
220 : : {0, 0x6F, "Offset"},
221 : : {0, 0x70, "Magnitude"},
222 : : {0, 0x71, "Phase"},
223 : : {0, 0x72, "Period"},
224 : : {0, 0x73, "Set_Constant_Force_Report"},
225 : : {0, 0x74, "Set_Ramp_Force_Report"},
226 : : {0, 0x75, "Ramp_Start"},
227 : : {0, 0x76, "Ramp_End"},
228 : : {0, 0x77, "Effect_Operation_Report"},
229 : : {0, 0x78, "Effect_Operation"},
230 : : {0, 0x79, "Op_Effect_Start"},
231 : : {0, 0x7A, "Op_Effect_Start_Solo"},
232 : : {0, 0x7B, "Op_Effect_Stop"},
233 : : {0, 0x7C, "Loop_Count"},
234 : : {0, 0x7D, "Device_Gain_Report"},
235 : : {0, 0x7E, "Device_Gain"},
236 : : {0, 0x7F, "PID_Pool_Report"},
237 : : {0, 0x80, "RAM_Pool_Size"},
238 : : {0, 0x81, "ROM_Pool_Size"},
239 : : {0, 0x82, "ROM_Effect_Block_Count"},
240 : : {0, 0x83, "Simultaneous_Effects_Max"},
241 : : {0, 0x84, "Pool_Alignment"},
242 : : {0, 0x85, "PID_Pool_Move_Report"},
243 : : {0, 0x86, "Move_Source"},
244 : : {0, 0x87, "Move_Destination"},
245 : : {0, 0x88, "Move_Length"},
246 : : {0, 0x89, "PID_Block_Load_Report"},
247 : : {0, 0x8B, "Block_Load_Status"},
248 : : {0, 0x8C, "Block_Load_Success"},
249 : : {0, 0x8D, "Block_Load_Full"},
250 : : {0, 0x8E, "Block_Load_Error"},
251 : : {0, 0x8F, "Block_Handle"},
252 : : {0, 0x90, "PID_Block_Free_Report"},
253 : : {0, 0x91, "Type_Specific_Block_Handle"},
254 : : {0, 0x92, "PID_State_Report"},
255 : : {0, 0x94, "Effect_Playing"},
256 : : {0, 0x95, "PID_Device_Control_Report"},
257 : : {0, 0x96, "PID_Device_Control"},
258 : : {0, 0x97, "DC_Enable_Actuators"},
259 : : {0, 0x98, "DC_Disable_Actuators"},
260 : : {0, 0x99, "DC_Stop_All_Effects"},
261 : : {0, 0x9A, "DC_Device_Reset"},
262 : : {0, 0x9B, "DC_Device_Pause"},
263 : : {0, 0x9C, "DC_Device_Continue"},
264 : : {0, 0x9F, "Device_Paused"},
265 : : {0, 0xA0, "Actuators_Enabled"},
266 : : {0, 0xA4, "Safety_Switch"},
267 : : {0, 0xA5, "Actuator_Override_Switch"},
268 : : {0, 0xA6, "Actuator_Power"},
269 : : {0, 0xA7, "Start_Delay"},
270 : : {0, 0xA8, "Parameter_Block_Size"},
271 : : {0, 0xA9, "Device_Managed_Pool"},
272 : : {0, 0xAA, "Shared_Parameter_Blocks"},
273 : : {0, 0xAB, "Create_New_Effect_Report"},
274 : : {0, 0xAC, "RAM_Pool_Available"},
275 : : { 0x84, 0, "Power Device" },
276 : : { 0x84, 0x02, "PresentStatus" },
277 : : { 0x84, 0x03, "ChangeStatus" },
278 : : { 0x84, 0x04, "UPS" },
279 : : { 0x84, 0x05, "PowerSupply" },
280 : : { 0x84, 0x10, "BatterySystem" },
281 : : { 0x84, 0x11, "BatterySystemID" },
282 : : { 0x84, 0x12, "Battery" },
283 : : { 0x84, 0x13, "BatteryID" },
284 : : { 0x84, 0x14, "Charger" },
285 : : { 0x84, 0x15, "ChargerID" },
286 : : { 0x84, 0x16, "PowerConverter" },
287 : : { 0x84, 0x17, "PowerConverterID" },
288 : : { 0x84, 0x18, "OutletSystem" },
289 : : { 0x84, 0x19, "OutletSystemID" },
290 : : { 0x84, 0x1a, "Input" },
291 : : { 0x84, 0x1b, "InputID" },
292 : : { 0x84, 0x1c, "Output" },
293 : : { 0x84, 0x1d, "OutputID" },
294 : : { 0x84, 0x1e, "Flow" },
295 : : { 0x84, 0x1f, "FlowID" },
296 : : { 0x84, 0x20, "Outlet" },
297 : : { 0x84, 0x21, "OutletID" },
298 : : { 0x84, 0x22, "Gang" },
299 : : { 0x84, 0x24, "PowerSummary" },
300 : : { 0x84, 0x25, "PowerSummaryID" },
301 : : { 0x84, 0x30, "Voltage" },
302 : : { 0x84, 0x31, "Current" },
303 : : { 0x84, 0x32, "Frequency" },
304 : : { 0x84, 0x33, "ApparentPower" },
305 : : { 0x84, 0x35, "PercentLoad" },
306 : : { 0x84, 0x40, "ConfigVoltage" },
307 : : { 0x84, 0x41, "ConfigCurrent" },
308 : : { 0x84, 0x43, "ConfigApparentPower" },
309 : : { 0x84, 0x53, "LowVoltageTransfer" },
310 : : { 0x84, 0x54, "HighVoltageTransfer" },
311 : : { 0x84, 0x56, "DelayBeforeStartup" },
312 : : { 0x84, 0x57, "DelayBeforeShutdown" },
313 : : { 0x84, 0x58, "Test" },
314 : : { 0x84, 0x5a, "AudibleAlarmControl" },
315 : : { 0x84, 0x60, "Present" },
316 : : { 0x84, 0x61, "Good" },
317 : : { 0x84, 0x62, "InternalFailure" },
318 : : { 0x84, 0x65, "Overload" },
319 : : { 0x84, 0x66, "OverCharged" },
320 : : { 0x84, 0x67, "OverTemperature" },
321 : : { 0x84, 0x68, "ShutdownRequested" },
322 : : { 0x84, 0x69, "ShutdownImminent" },
323 : : { 0x84, 0x6b, "SwitchOn/Off" },
324 : : { 0x84, 0x6c, "Switchable" },
325 : : { 0x84, 0x6d, "Used" },
326 : : { 0x84, 0x6e, "Boost" },
327 : : { 0x84, 0x73, "CommunicationLost" },
328 : : { 0x84, 0xfd, "iManufacturer" },
329 : : { 0x84, 0xfe, "iProduct" },
330 : : { 0x84, 0xff, "iSerialNumber" },
331 : : { 0x85, 0, "Battery System" },
332 : : { 0x85, 0x01, "SMBBatteryMode" },
333 : : { 0x85, 0x02, "SMBBatteryStatus" },
334 : : { 0x85, 0x03, "SMBAlarmWarning" },
335 : : { 0x85, 0x04, "SMBChargerMode" },
336 : : { 0x85, 0x05, "SMBChargerStatus" },
337 : : { 0x85, 0x06, "SMBChargerSpecInfo" },
338 : : { 0x85, 0x07, "SMBSelectorState" },
339 : : { 0x85, 0x08, "SMBSelectorPresets" },
340 : : { 0x85, 0x09, "SMBSelectorInfo" },
341 : : { 0x85, 0x29, "RemainingCapacityLimit" },
342 : : { 0x85, 0x2c, "CapacityMode" },
343 : : { 0x85, 0x42, "BelowRemainingCapacityLimit" },
344 : : { 0x85, 0x44, "Charging" },
345 : : { 0x85, 0x45, "Discharging" },
346 : : { 0x85, 0x4b, "NeedReplacement" },
347 : : { 0x85, 0x66, "RemainingCapacity" },
348 : : { 0x85, 0x68, "RunTimeToEmpty" },
349 : : { 0x85, 0x6a, "AverageTimeToFull" },
350 : : { 0x85, 0x83, "DesignCapacity" },
351 : : { 0x85, 0x85, "ManufacturerDate" },
352 : : { 0x85, 0x89, "iDeviceChemistry" },
353 : : { 0x85, 0x8b, "Rechargeable" },
354 : : { 0x85, 0x8f, "iOEMInformation" },
355 : : { 0x85, 0x8d, "CapacityGranularity1" },
356 : : { 0x85, 0xd0, "ACPresent" },
357 : : /* pages 0xff00 to 0xffff are vendor-specific */
358 : : { 0xffff, 0, "Vendor-specific-FF" },
359 : : { 0, 0, NULL }
360 : : };
361 : :
362 : : /* Either output directly into simple seq_file, or (if f == NULL)
363 : : * allocate a separate buffer that will then be passed to the 'events'
364 : : * ringbuffer.
365 : : *
366 : : * This is because these functions can be called both for "one-shot"
367 : : * "rdesc" while resolving, or for blocking "events".
368 : : *
369 : : * This holds both for resolv_usage_page() and hid_resolv_usage().
370 : : */
371 : 0 : static char *resolv_usage_page(unsigned page, struct seq_file *f) {
372 : : const struct hid_usage_entry *p;
373 : : char *buf = NULL;
374 : :
375 [ # # ]: 0 : if (!f) {
376 : : buf = kzalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
377 [ # # ]: 0 : if (!buf)
378 : : return ERR_PTR(-ENOMEM);
379 : : }
380 : :
381 [ # # ]: 0 : for (p = hid_usage_table; p->description; p++)
382 [ # # ]: 0 : if (p->page == page) {
383 [ # # ]: 0 : if (!f) {
384 : 0 : snprintf(buf, HID_DEBUG_BUFSIZE, "%s",
385 : : p->description);
386 : 0 : return buf;
387 : : }
388 : : else {
389 : 0 : seq_printf(f, "%s", p->description);
390 : 0 : return NULL;
391 : : }
392 : : }
393 [ # # ]: 0 : if (!f)
394 : 0 : snprintf(buf, HID_DEBUG_BUFSIZE, "%04x", page);
395 : : else
396 : 0 : seq_printf(f, "%04x", page);
397 : 0 : return buf;
398 : : }
399 : :
400 : 0 : char *hid_resolv_usage(unsigned usage, struct seq_file *f) {
401 : : const struct hid_usage_entry *p;
402 : : char *buf = NULL;
403 : : int len = 0;
404 : :
405 : 0 : buf = resolv_usage_page(usage >> 16, f);
406 [ # # ]: 0 : if (IS_ERR(buf)) {
407 : 0 : pr_err("error allocating HID debug buffer\n");
408 : 0 : return NULL;
409 : : }
410 : :
411 : :
412 [ # # ]: 0 : if (!f) {
413 : 0 : len = strlen(buf);
414 : 0 : snprintf(buf+len, max(0, HID_DEBUG_BUFSIZE - len), ".");
415 : 0 : len++;
416 : : }
417 : : else {
418 : 0 : seq_printf(f, ".");
419 : : }
420 [ # # ]: 0 : for (p = hid_usage_table; p->description; p++)
421 [ # # ]: 0 : if (p->page == (usage >> 16)) {
422 [ # # ][ # # ]: 0 : for(++p; p->description && p->usage != 0; p++)
423 [ # # ]: 0 : if (p->usage == (usage & 0xffff)) {
424 [ # # ]: 0 : if (!f)
425 : 0 : snprintf(buf + len,
426 : 0 : max(0,HID_DEBUG_BUFSIZE - len - 1),
427 : : "%s", p->description);
428 : : else
429 : 0 : seq_printf(f,
430 : : "%s",
431 : : p->description);
432 : 0 : return buf;
433 : : }
434 : : break;
435 : : }
436 [ # # ]: 0 : if (!f)
437 : 0 : snprintf(buf + len, max(0, HID_DEBUG_BUFSIZE - len - 1),
438 : : "%04x", usage & 0xffff);
439 : : else
440 : 0 : seq_printf(f, "%04x", usage & 0xffff);
441 : 0 : return buf;
442 : : }
443 : : EXPORT_SYMBOL_GPL(hid_resolv_usage);
444 : :
445 : : static void tab(int n, struct seq_file *f) {
446 : 0 : seq_printf(f, "%*s", n, "");
447 : : }
448 : :
449 : 0 : void hid_dump_field(struct hid_field *field, int n, struct seq_file *f) {
450 : : int j;
451 : :
452 [ # # ]: 0 : if (field->physical) {
453 : : tab(n, f);
454 : 0 : seq_printf(f, "Physical(");
455 : 0 : hid_resolv_usage(field->physical, f); seq_printf(f, ")\n");
456 : : }
457 [ # # ]: 0 : if (field->logical) {
458 : : tab(n, f);
459 : 0 : seq_printf(f, "Logical(");
460 : 0 : hid_resolv_usage(field->logical, f); seq_printf(f, ")\n");
461 : : }
462 [ # # ]: 0 : if (field->application) {
463 : : tab(n, f);
464 : 0 : seq_printf(f, "Application(");
465 : 0 : hid_resolv_usage(field->application, f); seq_printf(f, ")\n");
466 : : }
467 : 0 : tab(n, f); seq_printf(f, "Usage(%d)\n", field->maxusage);
468 [ # # ]: 0 : for (j = 0; j < field->maxusage; j++) {
469 : 0 : tab(n+2, f); hid_resolv_usage(field->usage[j].hid, f); seq_printf(f, "\n");
470 : : }
471 [ # # ]: 0 : if (field->logical_minimum != field->logical_maximum) {
472 : 0 : tab(n, f); seq_printf(f, "Logical Minimum(%d)\n", field->logical_minimum);
473 : 0 : tab(n, f); seq_printf(f, "Logical Maximum(%d)\n", field->logical_maximum);
474 : : }
475 [ # # ]: 0 : if (field->physical_minimum != field->physical_maximum) {
476 : 0 : tab(n, f); seq_printf(f, "Physical Minimum(%d)\n", field->physical_minimum);
477 : 0 : tab(n, f); seq_printf(f, "Physical Maximum(%d)\n", field->physical_maximum);
478 : : }
479 [ # # ]: 0 : if (field->unit_exponent) {
480 : 0 : tab(n, f); seq_printf(f, "Unit Exponent(%d)\n", field->unit_exponent);
481 : : }
482 [ # # ]: 0 : if (field->unit) {
483 : : static const char *systems[5] = { "None", "SI Linear", "SI Rotation", "English Linear", "English Rotation" };
484 : : static const char *units[5][8] = {
485 : : { "None", "None", "None", "None", "None", "None", "None", "None" },
486 : : { "None", "Centimeter", "Gram", "Seconds", "Kelvin", "Ampere", "Candela", "None" },
487 : : { "None", "Radians", "Gram", "Seconds", "Kelvin", "Ampere", "Candela", "None" },
488 : : { "None", "Inch", "Slug", "Seconds", "Fahrenheit", "Ampere", "Candela", "None" },
489 : : { "None", "Degrees", "Slug", "Seconds", "Fahrenheit", "Ampere", "Candela", "None" }
490 : : };
491 : :
492 : : int i;
493 : : int sys;
494 : : __u32 data = field->unit;
495 : :
496 : : /* First nibble tells us which system we're in. */
497 : 0 : sys = data & 0xf;
498 : 0 : data >>= 4;
499 : :
500 [ # # ]: 0 : if(sys > 4) {
501 : 0 : tab(n, f); seq_printf(f, "Unit(Invalid)\n");
502 : : }
503 : : else {
504 : : int earlier_unit = 0;
505 : :
506 : 0 : tab(n, f); seq_printf(f, "Unit(%s : ", systems[sys]);
507 : :
508 [ # # ]: 0 : for (i=1 ; i<sizeof(__u32)*2 ; i++) {
509 : 0 : char nibble = data & 0xf;
510 : 0 : data >>= 4;
511 [ # # ]: 0 : if (nibble != 0) {
512 [ # # ]: 0 : if(earlier_unit++ > 0)
513 : 0 : seq_printf(f, "*");
514 : 0 : seq_printf(f, "%s", units[sys][i]);
515 [ # # ]: 0 : if(nibble != 1) {
516 : : /* This is a _signed_ nibble(!) */
517 : :
518 : 0 : int val = nibble & 0x7;
519 [ # # ]: 0 : if(nibble & 0x08)
520 : 0 : val = -((0x7 & ~val) +1);
521 : 0 : seq_printf(f, "^%d", val);
522 : : }
523 : : }
524 : : }
525 : 0 : seq_printf(f, ")\n");
526 : : }
527 : : }
528 : 0 : tab(n, f); seq_printf(f, "Report Size(%u)\n", field->report_size);
529 : 0 : tab(n, f); seq_printf(f, "Report Count(%u)\n", field->report_count);
530 : 0 : tab(n, f); seq_printf(f, "Report Offset(%u)\n", field->report_offset);
531 : :
532 : 0 : tab(n, f); seq_printf(f, "Flags( ");
533 : 0 : j = field->flags;
534 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_CONSTANT & j ? "Constant " : "");
535 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_VARIABLE & j ? "Variable " : "Array ");
536 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_RELATIVE & j ? "Relative " : "Absolute ");
537 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_WRAP & j ? "Wrap " : "");
538 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_NONLINEAR & j ? "NonLinear " : "");
539 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_NO_PREFERRED & j ? "NoPreferredState " : "");
540 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_NULL_STATE & j ? "NullState " : "");
541 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_VOLATILE & j ? "Volatile " : "");
542 [ # # ]: 0 : seq_printf(f, "%s", HID_MAIN_ITEM_BUFFERED_BYTE & j ? "BufferedByte " : "");
543 : 0 : seq_printf(f, ")\n");
544 : 0 : }
545 : : EXPORT_SYMBOL_GPL(hid_dump_field);
546 : :
547 : 0 : void hid_dump_device(struct hid_device *device, struct seq_file *f)
548 : : {
549 : : struct hid_report_enum *report_enum;
550 : : struct hid_report *report;
551 : : struct list_head *list;
552 : : unsigned i,k;
553 : : static const char *table[] = {"INPUT", "OUTPUT", "FEATURE"};
554 : :
555 [ # # ]: 0 : for (i = 0; i < HID_REPORT_TYPES; i++) {
556 : 0 : report_enum = device->report_enum + i;
557 : 0 : list = report_enum->report_list.next;
558 [ # # ]: 0 : while (list != &report_enum->report_list) {
559 : : report = (struct hid_report *) list;
560 : : tab(2, f);
561 : 0 : seq_printf(f, "%s", table[i]);
562 [ # # ]: 0 : if (report->id)
563 : 0 : seq_printf(f, "(%d)", report->id);
564 : 0 : seq_printf(f, "[%s]", table[report->type]);
565 : 0 : seq_printf(f, "\n");
566 [ # # ]: 0 : for (k = 0; k < report->maxfield; k++) {
567 : : tab(4, f);
568 : 0 : seq_printf(f, "Field(%d)\n", k);
569 : 0 : hid_dump_field(report->field[k], 6, f);
570 : : }
571 : 0 : list = list->next;
572 : : }
573 : : }
574 : 0 : }
575 : : EXPORT_SYMBOL_GPL(hid_dump_device);
576 : :
577 : : /* enqueue string to 'events' ring buffer */
578 : 0 : void hid_debug_event(struct hid_device *hdev, char *buf)
579 : : {
580 : : int i;
581 : : struct hid_debug_list *list;
582 : : unsigned long flags;
583 : :
584 : 0 : spin_lock_irqsave(&hdev->debug_list_lock, flags);
585 [ # # ]: 0 : list_for_each_entry(list, &hdev->debug_list, node) {
586 [ # # ]: 0 : for (i = 0; i < strlen(buf); i++)
587 : 0 : list->hid_debug_buf[(list->tail + i) % HID_DEBUG_BUFSIZE] =
588 : 0 : buf[i];
589 : 0 : list->tail = (list->tail + i) % HID_DEBUG_BUFSIZE;
590 : : }
591 : : spin_unlock_irqrestore(&hdev->debug_list_lock, flags);
592 : :
593 : 0 : wake_up_interruptible(&hdev->debug_wait);
594 : 0 : }
595 : : EXPORT_SYMBOL_GPL(hid_debug_event);
596 : :
597 : 0 : void hid_dump_report(struct hid_device *hid, int type, u8 *data,
598 : : int size)
599 : : {
600 : : struct hid_report_enum *report_enum;
601 : : char *buf;
602 : : unsigned int i;
603 : :
604 : : buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
605 : :
606 [ # # ]: 0 : if (!buf)
607 : 0 : return;
608 : :
609 : 0 : report_enum = hid->report_enum + type;
610 : :
611 : : /* dump the report */
612 [ # # ]: 0 : snprintf(buf, HID_DEBUG_BUFSIZE - 1,
613 : : "\nreport (size %u) (%snumbered) = ", size,
614 : 0 : report_enum->numbered ? "" : "un");
615 : 0 : hid_debug_event(hid, buf);
616 : :
617 [ # # ]: 0 : for (i = 0; i < size; i++) {
618 : 0 : snprintf(buf, HID_DEBUG_BUFSIZE - 1,
619 : 0 : " %02x", data[i]);
620 : 0 : hid_debug_event(hid, buf);
621 : : }
622 : 0 : hid_debug_event(hid, "\n");
623 : 0 : kfree(buf);
624 : : }
625 : : EXPORT_SYMBOL_GPL(hid_dump_report);
626 : :
627 : 0 : void hid_dump_input(struct hid_device *hdev, struct hid_usage *usage, __s32 value)
628 : : {
629 : : char *buf;
630 : : int len;
631 : :
632 : 0 : buf = hid_resolv_usage(usage->hid, NULL);
633 [ # # ]: 0 : if (!buf)
634 : 0 : return;
635 : 0 : len = strlen(buf);
636 : 0 : snprintf(buf + len, HID_DEBUG_BUFSIZE - len - 1, " = %d\n", value);
637 : :
638 : 0 : hid_debug_event(hdev, buf);
639 : :
640 : 0 : kfree(buf);
641 : 0 : wake_up_interruptible(&hdev->debug_wait);
642 : :
643 : : }
644 : : EXPORT_SYMBOL_GPL(hid_dump_input);
645 : :
646 : : static const char *events[EV_MAX + 1] = {
647 : : [EV_SYN] = "Sync", [EV_KEY] = "Key",
648 : : [EV_REL] = "Relative", [EV_ABS] = "Absolute",
649 : : [EV_MSC] = "Misc", [EV_LED] = "LED",
650 : : [EV_SND] = "Sound", [EV_REP] = "Repeat",
651 : : [EV_FF] = "ForceFeedback", [EV_PWR] = "Power",
652 : : [EV_FF_STATUS] = "ForceFeedbackStatus",
653 : : };
654 : :
655 : : static const char *syncs[3] = {
656 : : [SYN_REPORT] = "Report", [SYN_CONFIG] = "Config",
657 : : [SYN_MT_REPORT] = "MT Report",
658 : : };
659 : :
660 : : static const char *keys[KEY_MAX + 1] = {
661 : : [KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc",
662 : : [KEY_1] = "1", [KEY_2] = "2",
663 : : [KEY_3] = "3", [KEY_4] = "4",
664 : : [KEY_5] = "5", [KEY_6] = "6",
665 : : [KEY_7] = "7", [KEY_8] = "8",
666 : : [KEY_9] = "9", [KEY_0] = "0",
667 : : [KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal",
668 : : [KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab",
669 : : [KEY_Q] = "Q", [KEY_W] = "W",
670 : : [KEY_E] = "E", [KEY_R] = "R",
671 : : [KEY_T] = "T", [KEY_Y] = "Y",
672 : : [KEY_U] = "U", [KEY_I] = "I",
673 : : [KEY_O] = "O", [KEY_P] = "P",
674 : : [KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace",
675 : : [KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl",
676 : : [KEY_A] = "A", [KEY_S] = "S",
677 : : [KEY_D] = "D", [KEY_F] = "F",
678 : : [KEY_G] = "G", [KEY_H] = "H",
679 : : [KEY_J] = "J", [KEY_K] = "K",
680 : : [KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon",
681 : : [KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave",
682 : : [KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash",
683 : : [KEY_Z] = "Z", [KEY_X] = "X",
684 : : [KEY_C] = "C", [KEY_V] = "V",
685 : : [KEY_B] = "B", [KEY_N] = "N",
686 : : [KEY_M] = "M", [KEY_COMMA] = "Comma",
687 : : [KEY_DOT] = "Dot", [KEY_SLASH] = "Slash",
688 : : [KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk",
689 : : [KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space",
690 : : [KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1",
691 : : [KEY_F2] = "F2", [KEY_F3] = "F3",
692 : : [KEY_F4] = "F4", [KEY_F5] = "F5",
693 : : [KEY_F6] = "F6", [KEY_F7] = "F7",
694 : : [KEY_F8] = "F8", [KEY_F9] = "F9",
695 : : [KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock",
696 : : [KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7",
697 : : [KEY_KP8] = "KP8", [KEY_KP9] = "KP9",
698 : : [KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4",
699 : : [KEY_KP5] = "KP5", [KEY_KP6] = "KP6",
700 : : [KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1",
701 : : [KEY_KP2] = "KP2", [KEY_KP3] = "KP3",
702 : : [KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot",
703 : : [KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
704 : : [KEY_F11] = "F11", [KEY_F12] = "F12",
705 : : [KEY_RO] = "RO", [KEY_KATAKANA] = "Katakana",
706 : : [KEY_HIRAGANA] = "HIRAGANA", [KEY_HENKAN] = "Henkan",
707 : : [KEY_KATAKANAHIRAGANA] = "Katakana/Hiragana", [KEY_MUHENKAN] = "Muhenkan",
708 : : [KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter",
709 : : [KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash",
710 : : [KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt",
711 : : [KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home",
712 : : [KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp",
713 : : [KEY_LEFT] = "Left", [KEY_RIGHT] = "Right",
714 : : [KEY_END] = "End", [KEY_DOWN] = "Down",
715 : : [KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert",
716 : : [KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro",
717 : : [KEY_MUTE] = "Mute", [KEY_VOLUMEDOWN] = "VolumeDown",
718 : : [KEY_VOLUMEUP] = "VolumeUp", [KEY_POWER] = "Power",
719 : : [KEY_KPEQUAL] = "KPEqual", [KEY_KPPLUSMINUS] = "KPPlusMinus",
720 : : [KEY_PAUSE] = "Pause", [KEY_KPCOMMA] = "KPComma",
721 : : [KEY_HANGUEL] = "Hangeul", [KEY_HANJA] = "Hanja",
722 : : [KEY_YEN] = "Yen", [KEY_LEFTMETA] = "LeftMeta",
723 : : [KEY_RIGHTMETA] = "RightMeta", [KEY_COMPOSE] = "Compose",
724 : : [KEY_STOP] = "Stop", [KEY_AGAIN] = "Again",
725 : : [KEY_PROPS] = "Props", [KEY_UNDO] = "Undo",
726 : : [KEY_FRONT] = "Front", [KEY_COPY] = "Copy",
727 : : [KEY_OPEN] = "Open", [KEY_PASTE] = "Paste",
728 : : [KEY_FIND] = "Find", [KEY_CUT] = "Cut",
729 : : [KEY_HELP] = "Help", [KEY_MENU] = "Menu",
730 : : [KEY_CALC] = "Calc", [KEY_SETUP] = "Setup",
731 : : [KEY_SLEEP] = "Sleep", [KEY_WAKEUP] = "WakeUp",
732 : : [KEY_FILE] = "File", [KEY_SENDFILE] = "SendFile",
733 : : [KEY_DELETEFILE] = "DeleteFile", [KEY_XFER] = "X-fer",
734 : : [KEY_PROG1] = "Prog1", [KEY_PROG2] = "Prog2",
735 : : [KEY_WWW] = "WWW", [KEY_MSDOS] = "MSDOS",
736 : : [KEY_COFFEE] = "Coffee", [KEY_DIRECTION] = "Direction",
737 : : [KEY_CYCLEWINDOWS] = "CycleWindows", [KEY_MAIL] = "Mail",
738 : : [KEY_BOOKMARKS] = "Bookmarks", [KEY_COMPUTER] = "Computer",
739 : : [KEY_BACK] = "Back", [KEY_FORWARD] = "Forward",
740 : : [KEY_CLOSECD] = "CloseCD", [KEY_EJECTCD] = "EjectCD",
741 : : [KEY_EJECTCLOSECD] = "EjectCloseCD", [KEY_NEXTSONG] = "NextSong",
742 : : [KEY_PLAYPAUSE] = "PlayPause", [KEY_PREVIOUSSONG] = "PreviousSong",
743 : : [KEY_STOPCD] = "StopCD", [KEY_RECORD] = "Record",
744 : : [KEY_REWIND] = "Rewind", [KEY_PHONE] = "Phone",
745 : : [KEY_ISO] = "ISOKey", [KEY_CONFIG] = "Config",
746 : : [KEY_HOMEPAGE] = "HomePage", [KEY_REFRESH] = "Refresh",
747 : : [KEY_EXIT] = "Exit", [KEY_MOVE] = "Move",
748 : : [KEY_EDIT] = "Edit", [KEY_SCROLLUP] = "ScrollUp",
749 : : [KEY_SCROLLDOWN] = "ScrollDown", [KEY_KPLEFTPAREN] = "KPLeftParenthesis",
750 : : [KEY_KPRIGHTPAREN] = "KPRightParenthesis", [KEY_NEW] = "New",
751 : : [KEY_REDO] = "Redo", [KEY_F13] = "F13",
752 : : [KEY_F14] = "F14", [KEY_F15] = "F15",
753 : : [KEY_F16] = "F16", [KEY_F17] = "F17",
754 : : [KEY_F18] = "F18", [KEY_F19] = "F19",
755 : : [KEY_F20] = "F20", [KEY_F21] = "F21",
756 : : [KEY_F22] = "F22", [KEY_F23] = "F23",
757 : : [KEY_F24] = "F24", [KEY_PLAYCD] = "PlayCD",
758 : : [KEY_PAUSECD] = "PauseCD", [KEY_PROG3] = "Prog3",
759 : : [KEY_PROG4] = "Prog4", [KEY_SUSPEND] = "Suspend",
760 : : [KEY_CLOSE] = "Close", [KEY_PLAY] = "Play",
761 : : [KEY_FASTFORWARD] = "FastForward", [KEY_BASSBOOST] = "BassBoost",
762 : : [KEY_PRINT] = "Print", [KEY_HP] = "HP",
763 : : [KEY_CAMERA] = "Camera", [KEY_SOUND] = "Sound",
764 : : [KEY_QUESTION] = "Question", [KEY_EMAIL] = "Email",
765 : : [KEY_CHAT] = "Chat", [KEY_SEARCH] = "Search",
766 : : [KEY_CONNECT] = "Connect", [KEY_FINANCE] = "Finance",
767 : : [KEY_SPORT] = "Sport", [KEY_SHOP] = "Shop",
768 : : [KEY_ALTERASE] = "AlternateErase", [KEY_CANCEL] = "Cancel",
769 : : [KEY_BRIGHTNESSDOWN] = "BrightnessDown", [KEY_BRIGHTNESSUP] = "BrightnessUp",
770 : : [KEY_MEDIA] = "Media", [KEY_UNKNOWN] = "Unknown",
771 : : [BTN_0] = "Btn0", [BTN_1] = "Btn1",
772 : : [BTN_2] = "Btn2", [BTN_3] = "Btn3",
773 : : [BTN_4] = "Btn4", [BTN_5] = "Btn5",
774 : : [BTN_6] = "Btn6", [BTN_7] = "Btn7",
775 : : [BTN_8] = "Btn8", [BTN_9] = "Btn9",
776 : : [BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn",
777 : : [BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn",
778 : : [BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn",
779 : : [BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn",
780 : : [BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn",
781 : : [BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn",
782 : : [BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn",
783 : : [BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2",
784 : : [BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4",
785 : : [BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6",
786 : : [BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA",
787 : : [BTN_B] = "BtnB", [BTN_C] = "BtnC",
788 : : [BTN_X] = "BtnX", [BTN_Y] = "BtnY",
789 : : [BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL",
790 : : [BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2",
791 : : [BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect",
792 : : [BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode",
793 : : [BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR",
794 : : [BTN_TOOL_PEN] = "ToolPen", [BTN_TOOL_RUBBER] = "ToolRubber",
795 : : [BTN_TOOL_BRUSH] = "ToolBrush", [BTN_TOOL_PENCIL] = "ToolPencil",
796 : : [BTN_TOOL_AIRBRUSH] = "ToolAirbrush", [BTN_TOOL_FINGER] = "ToolFinger",
797 : : [BTN_TOOL_MOUSE] = "ToolMouse", [BTN_TOOL_LENS] = "ToolLens",
798 : : [BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus",
799 : : [BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "ToolDoubleTap",
800 : : [BTN_TOOL_TRIPLETAP] = "ToolTripleTap", [BTN_GEAR_DOWN] = "WheelBtn",
801 : : [BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok",
802 : : [KEY_SELECT] = "Select", [KEY_GOTO] = "Goto",
803 : : [KEY_CLEAR] = "Clear", [KEY_POWER2] = "Power2",
804 : : [KEY_OPTION] = "Option", [KEY_INFO] = "Info",
805 : : [KEY_TIME] = "Time", [KEY_VENDOR] = "Vendor",
806 : : [KEY_ARCHIVE] = "Archive", [KEY_PROGRAM] = "Program",
807 : : [KEY_CHANNEL] = "Channel", [KEY_FAVORITES] = "Favorites",
808 : : [KEY_EPG] = "EPG", [KEY_PVR] = "PVR",
809 : : [KEY_MHP] = "MHP", [KEY_LANGUAGE] = "Language",
810 : : [KEY_TITLE] = "Title", [KEY_SUBTITLE] = "Subtitle",
811 : : [KEY_ANGLE] = "Angle", [KEY_ZOOM] = "Zoom",
812 : : [KEY_MODE] = "Mode", [KEY_KEYBOARD] = "Keyboard",
813 : : [KEY_SCREEN] = "Screen", [KEY_PC] = "PC",
814 : : [KEY_TV] = "TV", [KEY_TV2] = "TV2",
815 : : [KEY_VCR] = "VCR", [KEY_VCR2] = "VCR2",
816 : : [KEY_SAT] = "Sat", [KEY_SAT2] = "Sat2",
817 : : [KEY_CD] = "CD", [KEY_TAPE] = "Tape",
818 : : [KEY_RADIO] = "Radio", [KEY_TUNER] = "Tuner",
819 : : [KEY_PLAYER] = "Player", [KEY_TEXT] = "Text",
820 : : [KEY_DVD] = "DVD", [KEY_AUX] = "Aux",
821 : : [KEY_MP3] = "MP3", [KEY_AUDIO] = "Audio",
822 : : [KEY_VIDEO] = "Video", [KEY_DIRECTORY] = "Directory",
823 : : [KEY_LIST] = "List", [KEY_MEMO] = "Memo",
824 : : [KEY_CALENDAR] = "Calendar", [KEY_RED] = "Red",
825 : : [KEY_GREEN] = "Green", [KEY_YELLOW] = "Yellow",
826 : : [KEY_BLUE] = "Blue", [KEY_CHANNELUP] = "ChannelUp",
827 : : [KEY_CHANNELDOWN] = "ChannelDown", [KEY_FIRST] = "First",
828 : : [KEY_LAST] = "Last", [KEY_AB] = "AB",
829 : : [KEY_NEXT] = "Next", [KEY_RESTART] = "Restart",
830 : : [KEY_SLOW] = "Slow", [KEY_SHUFFLE] = "Shuffle",
831 : : [KEY_BREAK] = "Break", [KEY_PREVIOUS] = "Previous",
832 : : [KEY_DIGITS] = "Digits", [KEY_TEEN] = "TEEN",
833 : : [KEY_TWEN] = "TWEN", [KEY_DEL_EOL] = "DeleteEOL",
834 : : [KEY_DEL_EOS] = "DeleteEOS", [KEY_INS_LINE] = "InsertLine",
835 : : [KEY_DEL_LINE] = "DeleteLine",
836 : : [KEY_SEND] = "Send", [KEY_REPLY] = "Reply",
837 : : [KEY_FORWARDMAIL] = "ForwardMail", [KEY_SAVE] = "Save",
838 : : [KEY_DOCUMENTS] = "Documents", [KEY_SPELLCHECK] = "SpellCheck",
839 : : [KEY_LOGOFF] = "Logoff",
840 : : [KEY_FN] = "Fn", [KEY_FN_ESC] = "Fn+ESC",
841 : : [KEY_FN_1] = "Fn+1", [KEY_FN_2] = "Fn+2",
842 : : [KEY_FN_B] = "Fn+B", [KEY_FN_D] = "Fn+D",
843 : : [KEY_FN_E] = "Fn+E", [KEY_FN_F] = "Fn+F",
844 : : [KEY_FN_S] = "Fn+S",
845 : : [KEY_FN_F1] = "Fn+F1", [KEY_FN_F2] = "Fn+F2",
846 : : [KEY_FN_F3] = "Fn+F3", [KEY_FN_F4] = "Fn+F4",
847 : : [KEY_FN_F5] = "Fn+F5", [KEY_FN_F6] = "Fn+F6",
848 : : [KEY_FN_F7] = "Fn+F7", [KEY_FN_F8] = "Fn+F8",
849 : : [KEY_FN_F9] = "Fn+F9", [KEY_FN_F10] = "Fn+F10",
850 : : [KEY_FN_F11] = "Fn+F11", [KEY_FN_F12] = "Fn+F12",
851 : : [KEY_KBDILLUMTOGGLE] = "KbdIlluminationToggle",
852 : : [KEY_KBDILLUMDOWN] = "KbdIlluminationDown",
853 : : [KEY_KBDILLUMUP] = "KbdIlluminationUp",
854 : : [KEY_SWITCHVIDEOMODE] = "SwitchVideoMode",
855 : : };
856 : :
857 : : static const char *relatives[REL_MAX + 1] = {
858 : : [REL_X] = "X", [REL_Y] = "Y",
859 : : [REL_Z] = "Z", [REL_RX] = "Rx",
860 : : [REL_RY] = "Ry", [REL_RZ] = "Rz",
861 : : [REL_HWHEEL] = "HWheel", [REL_DIAL] = "Dial",
862 : : [REL_WHEEL] = "Wheel", [REL_MISC] = "Misc",
863 : : };
864 : :
865 : : static const char *absolutes[ABS_CNT] = {
866 : : [ABS_X] = "X", [ABS_Y] = "Y",
867 : : [ABS_Z] = "Z", [ABS_RX] = "Rx",
868 : : [ABS_RY] = "Ry", [ABS_RZ] = "Rz",
869 : : [ABS_THROTTLE] = "Throttle", [ABS_RUDDER] = "Rudder",
870 : : [ABS_WHEEL] = "Wheel", [ABS_GAS] = "Gas",
871 : : [ABS_BRAKE] = "Brake", [ABS_HAT0X] = "Hat0X",
872 : : [ABS_HAT0Y] = "Hat0Y", [ABS_HAT1X] = "Hat1X",
873 : : [ABS_HAT1Y] = "Hat1Y", [ABS_HAT2X] = "Hat2X",
874 : : [ABS_HAT2Y] = "Hat2Y", [ABS_HAT3X] = "Hat3X",
875 : : [ABS_HAT3Y] = "Hat 3Y", [ABS_PRESSURE] = "Pressure",
876 : : [ABS_DISTANCE] = "Distance", [ABS_TILT_X] = "XTilt",
877 : : [ABS_TILT_Y] = "YTilt", [ABS_TOOL_WIDTH] = "ToolWidth",
878 : : [ABS_VOLUME] = "Volume", [ABS_MISC] = "Misc",
879 : : [ABS_MT_TOUCH_MAJOR] = "MTMajor",
880 : : [ABS_MT_TOUCH_MINOR] = "MTMinor",
881 : : [ABS_MT_WIDTH_MAJOR] = "MTMajorW",
882 : : [ABS_MT_WIDTH_MINOR] = "MTMinorW",
883 : : [ABS_MT_ORIENTATION] = "MTOrientation",
884 : : [ABS_MT_POSITION_X] = "MTPositionX",
885 : : [ABS_MT_POSITION_Y] = "MTPositionY",
886 : : [ABS_MT_TOOL_TYPE] = "MTToolType",
887 : : [ABS_MT_BLOB_ID] = "MTBlobID",
888 : : };
889 : :
890 : : static const char *misc[MSC_MAX + 1] = {
891 : : [MSC_SERIAL] = "Serial", [MSC_PULSELED] = "Pulseled",
892 : : [MSC_GESTURE] = "Gesture", [MSC_RAW] = "RawData"
893 : : };
894 : :
895 : : static const char *leds[LED_MAX + 1] = {
896 : : [LED_NUML] = "NumLock", [LED_CAPSL] = "CapsLock",
897 : : [LED_SCROLLL] = "ScrollLock", [LED_COMPOSE] = "Compose",
898 : : [LED_KANA] = "Kana", [LED_SLEEP] = "Sleep",
899 : : [LED_SUSPEND] = "Suspend", [LED_MUTE] = "Mute",
900 : : [LED_MISC] = "Misc",
901 : : };
902 : :
903 : : static const char *repeats[REP_MAX + 1] = {
904 : : [REP_DELAY] = "Delay", [REP_PERIOD] = "Period"
905 : : };
906 : :
907 : : static const char *sounds[SND_MAX + 1] = {
908 : : [SND_CLICK] = "Click", [SND_BELL] = "Bell",
909 : : [SND_TONE] = "Tone"
910 : : };
911 : :
912 : : static const char **names[EV_MAX + 1] = {
913 : : [EV_SYN] = syncs, [EV_KEY] = keys,
914 : : [EV_REL] = relatives, [EV_ABS] = absolutes,
915 : : [EV_MSC] = misc, [EV_LED] = leds,
916 : : [EV_SND] = sounds, [EV_REP] = repeats,
917 : : };
918 : :
919 : 0 : static void hid_resolv_event(__u8 type, __u16 code, struct seq_file *f)
920 : : {
921 [ # # ][ # # ]: 0 : seq_printf(f, "%s.%s", events[type] ? events[type] : "?",
922 [ # # ]: 0 : names[type] ? (names[type][code] ? names[type][code] : "?") : "?");
923 : 0 : }
924 : :
925 : 0 : static void hid_dump_input_mapping(struct hid_device *hid, struct seq_file *f)
926 : : {
927 : : int i, j, k;
928 : : struct hid_report *report;
929 : : struct hid_usage *usage;
930 : :
931 [ # # ]: 0 : for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
932 [ # # ]: 0 : list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
933 [ # # ]: 0 : for (i = 0; i < report->maxfield; i++) {
934 [ # # ]: 0 : for ( j = 0; j < report->field[i]->maxusage; j++) {
935 : 0 : usage = report->field[i]->usage + j;
936 : 0 : hid_resolv_usage(usage->hid, f);
937 : 0 : seq_printf(f, " ---> ");
938 : 0 : hid_resolv_event(usage->type, usage->code, f);
939 : 0 : seq_printf(f, "\n");
940 : : }
941 : : }
942 : : }
943 : : }
944 : :
945 : 0 : }
946 : :
947 : 0 : static int hid_debug_rdesc_show(struct seq_file *f, void *p)
948 : : {
949 : 0 : struct hid_device *hdev = f->private;
950 : 0 : const __u8 *rdesc = hdev->rdesc;
951 : 0 : unsigned rsize = hdev->rsize;
952 : : int i;
953 : :
954 [ # # ]: 0 : if (!rdesc) {
955 : 0 : rdesc = hdev->dev_rdesc;
956 : 0 : rsize = hdev->dev_rsize;
957 : : }
958 : :
959 : : /* dump HID report descriptor */
960 [ # # ]: 0 : for (i = 0; i < rsize; i++)
961 : 0 : seq_printf(f, "%02x ", rdesc[i]);
962 : 0 : seq_printf(f, "\n\n");
963 : :
964 : : /* dump parsed data and input mappings */
965 : 0 : hid_dump_device(hdev, f);
966 : 0 : seq_printf(f, "\n");
967 : 0 : hid_dump_input_mapping(hdev, f);
968 : :
969 : 0 : return 0;
970 : : }
971 : :
972 : 0 : static int hid_debug_rdesc_open(struct inode *inode, struct file *file)
973 : : {
974 : 0 : return single_open(file, hid_debug_rdesc_show, inode->i_private);
975 : : }
976 : :
977 : 0 : static int hid_debug_events_open(struct inode *inode, struct file *file)
978 : : {
979 : : int err = 0;
980 : : struct hid_debug_list *list;
981 : : unsigned long flags;
982 : :
983 [ # # ]: 0 : if (!(list = kzalloc(sizeof(struct hid_debug_list), GFP_KERNEL))) {
984 : : err = -ENOMEM;
985 : : goto out;
986 : : }
987 : :
988 [ # # ]: 0 : if (!(list->hid_debug_buf = kzalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_KERNEL))) {
989 : : err = -ENOMEM;
990 : 0 : kfree(list);
991 : 0 : goto out;
992 : : }
993 : 0 : list->hdev = (struct hid_device *) inode->i_private;
994 : 0 : file->private_data = list;
995 : 0 : mutex_init(&list->read_mutex);
996 : :
997 : 0 : spin_lock_irqsave(&list->hdev->debug_list_lock, flags);
998 : 0 : list_add_tail(&list->node, &list->hdev->debug_list);
999 : 0 : spin_unlock_irqrestore(&list->hdev->debug_list_lock, flags);
1000 : :
1001 : : out:
1002 : 0 : return err;
1003 : : }
1004 : :
1005 : 0 : static ssize_t hid_debug_events_read(struct file *file, char __user *buffer,
1006 : : size_t count, loff_t *ppos)
1007 : : {
1008 : 0 : struct hid_debug_list *list = file->private_data;
1009 : : int ret = 0, len;
1010 : 0 : DECLARE_WAITQUEUE(wait, current);
1011 : :
1012 : 0 : mutex_lock(&list->read_mutex);
1013 [ # # ]: 0 : while (ret == 0) {
1014 [ # # ]: 0 : if (list->head == list->tail) {
1015 : 0 : add_wait_queue(&list->hdev->debug_wait, &wait);
1016 : 0 : set_current_state(TASK_INTERRUPTIBLE);
1017 : :
1018 [ # # ]: 0 : while (list->head == list->tail) {
1019 [ # # ]: 0 : if (file->f_flags & O_NONBLOCK) {
1020 : : ret = -EAGAIN;
1021 : : break;
1022 : : }
1023 [ # # ]: 0 : if (signal_pending(current)) {
1024 : : ret = -ERESTARTSYS;
1025 : : break;
1026 : : }
1027 : :
1028 [ # # ][ # # ]: 0 : if (!list->hdev || !list->hdev->debug) {
1029 : : ret = -EIO;
1030 : : break;
1031 : : }
1032 : :
1033 : : /* allow O_NONBLOCK from other threads */
1034 : 0 : mutex_unlock(&list->read_mutex);
1035 : 0 : schedule();
1036 : 0 : mutex_lock(&list->read_mutex);
1037 : 0 : set_current_state(TASK_INTERRUPTIBLE);
1038 : : }
1039 : :
1040 : 0 : set_current_state(TASK_RUNNING);
1041 : 0 : remove_wait_queue(&list->hdev->debug_wait, &wait);
1042 : : }
1043 : :
1044 [ # # ]: 0 : if (ret)
1045 : : goto out;
1046 : :
1047 : : /* pass the ringbuffer contents to userspace */
1048 : : copy_rest:
1049 [ # # ]: 0 : if (list->tail == list->head)
1050 : : goto out;
1051 [ # # ]: 0 : if (list->tail > list->head) {
1052 : 0 : len = list->tail - list->head;
1053 : :
1054 [ # # ]: 0 : if (copy_to_user(buffer + ret, &list->hid_debug_buf[list->head], len)) {
1055 : : ret = -EFAULT;
1056 : : goto out;
1057 : : }
1058 : 0 : ret += len;
1059 : 0 : list->head += len;
1060 : : } else {
1061 : 0 : len = HID_DEBUG_BUFSIZE - list->head;
1062 : :
1063 [ # # ]: 0 : if (copy_to_user(buffer, &list->hid_debug_buf[list->head], len)) {
1064 : : ret = -EFAULT;
1065 : : goto out;
1066 : : }
1067 : 0 : list->head = 0;
1068 : 0 : ret += len;
1069 : 0 : goto copy_rest;
1070 : : }
1071 : :
1072 : : }
1073 : : out:
1074 : 0 : mutex_unlock(&list->read_mutex);
1075 : 0 : return ret;
1076 : : }
1077 : :
1078 : 0 : static unsigned int hid_debug_events_poll(struct file *file, poll_table *wait)
1079 : : {
1080 : 0 : struct hid_debug_list *list = file->private_data;
1081 : :
1082 : 0 : poll_wait(file, &list->hdev->debug_wait, wait);
1083 [ # # ]: 0 : if (list->head != list->tail)
1084 : : return POLLIN | POLLRDNORM;
1085 [ # # ]: 0 : if (!list->hdev->debug)
1086 : : return POLLERR | POLLHUP;
1087 : 0 : return 0;
1088 : : }
1089 : :
1090 : 0 : static int hid_debug_events_release(struct inode *inode, struct file *file)
1091 : : {
1092 : 0 : struct hid_debug_list *list = file->private_data;
1093 : : unsigned long flags;
1094 : :
1095 : 0 : spin_lock_irqsave(&list->hdev->debug_list_lock, flags);
1096 : : list_del(&list->node);
1097 : 0 : spin_unlock_irqrestore(&list->hdev->debug_list_lock, flags);
1098 : 0 : kfree(list->hid_debug_buf);
1099 : 0 : kfree(list);
1100 : :
1101 : 0 : return 0;
1102 : : }
1103 : :
1104 : : static const struct file_operations hid_debug_rdesc_fops = {
1105 : : .open = hid_debug_rdesc_open,
1106 : : .read = seq_read,
1107 : : .llseek = seq_lseek,
1108 : : .release = single_release,
1109 : : };
1110 : :
1111 : : static const struct file_operations hid_debug_events_fops = {
1112 : : .owner = THIS_MODULE,
1113 : : .open = hid_debug_events_open,
1114 : : .read = hid_debug_events_read,
1115 : : .poll = hid_debug_events_poll,
1116 : : .release = hid_debug_events_release,
1117 : : .llseek = noop_llseek,
1118 : : };
1119 : :
1120 : :
1121 : 0 : void hid_debug_register(struct hid_device *hdev, const char *name)
1122 : : {
1123 : 0 : hdev->debug_dir = debugfs_create_dir(name, hid_debug_root);
1124 : 0 : hdev->debug_rdesc = debugfs_create_file("rdesc", 0400,
1125 : : hdev->debug_dir, hdev, &hid_debug_rdesc_fops);
1126 : 0 : hdev->debug_events = debugfs_create_file("events", 0400,
1127 : : hdev->debug_dir, hdev, &hid_debug_events_fops);
1128 : 0 : hdev->debug = 1;
1129 : 0 : }
1130 : :
1131 : 0 : void hid_debug_unregister(struct hid_device *hdev)
1132 : : {
1133 : 0 : hdev->debug = 0;
1134 : 0 : wake_up_interruptible(&hdev->debug_wait);
1135 : 0 : debugfs_remove(hdev->debug_rdesc);
1136 : 0 : debugfs_remove(hdev->debug_events);
1137 : 0 : debugfs_remove(hdev->debug_dir);
1138 : 0 : }
1139 : :
1140 : 0 : void hid_debug_init(void)
1141 : : {
1142 : 0 : hid_debug_root = debugfs_create_dir("hid", NULL);
1143 : 0 : }
1144 : :
1145 : 0 : void hid_debug_exit(void)
1146 : : {
1147 : 0 : debugfs_remove_recursive(hid_debug_root);
1148 : 0 : }
1149 : :
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