xref: /openbmc/linux/drivers/hid/hid-sony.c (revision 98ddec80)
1 /*
2  *  HID driver for Sony / PS2 / PS3 / PS4 BD devices.
3  *
4  *  Copyright (c) 1999 Andreas Gal
5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7  *  Copyright (c) 2008 Jiri Slaby
8  *  Copyright (c) 2012 David Dillow <dave@thedillows.org>
9  *  Copyright (c) 2006-2013 Jiri Kosina
10  *  Copyright (c) 2013 Colin Leitner <colin.leitner@gmail.com>
11  *  Copyright (c) 2014-2016 Frank Praznik <frank.praznik@gmail.com>
12  *  Copyright (c) 2018 Todd Kelner
13  */
14 
15 /*
16  * This program is free software; you can redistribute it and/or modify it
17  * under the terms of the GNU General Public License as published by the Free
18  * Software Foundation; either version 2 of the License, or (at your option)
19  * any later version.
20  */
21 
22 /*
23  * NOTE: in order for the Sony PS3 BD Remote Control to be found by
24  * a Bluetooth host, the key combination Start+Enter has to be kept pressed
25  * for about 7 seconds with the Bluetooth Host Controller in discovering mode.
26  *
27  * There will be no PIN request from the device.
28  */
29 
30 #include <linux/device.h>
31 #include <linux/hid.h>
32 #include <linux/module.h>
33 #include <linux/slab.h>
34 #include <linux/leds.h>
35 #include <linux/power_supply.h>
36 #include <linux/spinlock.h>
37 #include <linux/list.h>
38 #include <linux/idr.h>
39 #include <linux/input/mt.h>
40 #include <linux/crc32.h>
41 #include <asm/unaligned.h>
42 
43 #include "hid-ids.h"
44 
45 #define VAIO_RDESC_CONSTANT       BIT(0)
46 #define SIXAXIS_CONTROLLER_USB    BIT(1)
47 #define SIXAXIS_CONTROLLER_BT     BIT(2)
48 #define BUZZ_CONTROLLER           BIT(3)
49 #define PS3REMOTE                 BIT(4)
50 #define DUALSHOCK4_CONTROLLER_USB BIT(5)
51 #define DUALSHOCK4_CONTROLLER_BT  BIT(6)
52 #define DUALSHOCK4_DONGLE         BIT(7)
53 #define MOTION_CONTROLLER_USB     BIT(8)
54 #define MOTION_CONTROLLER_BT      BIT(9)
55 #define NAVIGATION_CONTROLLER_USB BIT(10)
56 #define NAVIGATION_CONTROLLER_BT  BIT(11)
57 #define SINO_LITE_CONTROLLER      BIT(12)
58 #define FUTUREMAX_DANCE_MAT       BIT(13)
59 #define NSG_MR5U_REMOTE_BT        BIT(14)
60 #define NSG_MR7U_REMOTE_BT        BIT(15)
61 
62 #define SIXAXIS_CONTROLLER (SIXAXIS_CONTROLLER_USB | SIXAXIS_CONTROLLER_BT)
63 #define MOTION_CONTROLLER (MOTION_CONTROLLER_USB | MOTION_CONTROLLER_BT)
64 #define NAVIGATION_CONTROLLER (NAVIGATION_CONTROLLER_USB |\
65 				NAVIGATION_CONTROLLER_BT)
66 #define DUALSHOCK4_CONTROLLER (DUALSHOCK4_CONTROLLER_USB |\
67 				DUALSHOCK4_CONTROLLER_BT | \
68 				DUALSHOCK4_DONGLE)
69 #define SONY_LED_SUPPORT (SIXAXIS_CONTROLLER | BUZZ_CONTROLLER |\
70 				DUALSHOCK4_CONTROLLER | MOTION_CONTROLLER |\
71 				NAVIGATION_CONTROLLER)
72 #define SONY_BATTERY_SUPPORT (SIXAXIS_CONTROLLER | DUALSHOCK4_CONTROLLER |\
73 				MOTION_CONTROLLER_BT | NAVIGATION_CONTROLLER)
74 #define SONY_FF_SUPPORT (SIXAXIS_CONTROLLER | DUALSHOCK4_CONTROLLER |\
75 				MOTION_CONTROLLER)
76 #define SONY_BT_DEVICE (SIXAXIS_CONTROLLER_BT | DUALSHOCK4_CONTROLLER_BT |\
77 			MOTION_CONTROLLER_BT | NAVIGATION_CONTROLLER_BT)
78 #define NSG_MRXU_REMOTE (NSG_MR5U_REMOTE_BT | NSG_MR7U_REMOTE_BT)
79 
80 #define MAX_LEDS 4
81 #define NSG_MRXU_MAX_X 1667
82 #define NSG_MRXU_MAX_Y 1868
83 
84 
85 /* PS/3 Motion controller */
86 static u8 motion_rdesc[] = {
87 	0x05, 0x01,         /*  Usage Page (Desktop),               */
88 	0x09, 0x04,         /*  Usage (Joystick),                   */
89 	0xA1, 0x01,         /*  Collection (Application),           */
90 	0xA1, 0x02,         /*      Collection (Logical),           */
91 	0x85, 0x01,         /*          Report ID (1),              */
92 	0x75, 0x01,         /*          Report Size (1),            */
93 	0x95, 0x15,         /*          Report Count (21),          */
94 	0x15, 0x00,         /*          Logical Minimum (0),        */
95 	0x25, 0x01,         /*          Logical Maximum (1),        */
96 	0x35, 0x00,         /*          Physical Minimum (0),       */
97 	0x45, 0x01,         /*          Physical Maximum (1),       */
98 	0x05, 0x09,         /*          Usage Page (Button),        */
99 	0x19, 0x01,         /*          Usage Minimum (01h),        */
100 	0x29, 0x15,         /*          Usage Maximum (15h),        */
101 	0x81, 0x02,         /*          Input (Variable),           * Buttons */
102 	0x95, 0x0B,         /*          Report Count (11),          */
103 	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
104 	0x81, 0x03,         /*          Input (Constant, Variable), * Padding */
105 	0x15, 0x00,         /*          Logical Minimum (0),        */
106 	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
107 	0x05, 0x01,         /*          Usage Page (Desktop),       */
108 	0xA1, 0x00,         /*          Collection (Physical),      */
109 	0x75, 0x08,         /*              Report Size (8),        */
110 	0x95, 0x01,         /*              Report Count (1),       */
111 	0x35, 0x00,         /*              Physical Minimum (0),   */
112 	0x46, 0xFF, 0x00,   /*              Physical Maximum (255), */
113 	0x09, 0x30,         /*              Usage (X),              */
114 	0x81, 0x02,         /*              Input (Variable),       * Trigger */
115 	0xC0,               /*          End Collection,             */
116 	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
117 	0x75, 0x08,         /*          Report Size (8),            */
118 	0x95, 0x07,         /*          Report Count (7),           * skip 7 bytes */
119 	0x81, 0x02,         /*          Input (Variable),           */
120 	0x05, 0x01,         /*          Usage Page (Desktop),       */
121 	0x75, 0x10,         /*          Report Size (16),           */
122 	0x46, 0xFF, 0xFF,   /*          Physical Maximum (65535),   */
123 	0x27, 0xFF, 0xFF, 0x00, 0x00, /*      Logical Maximum (65535),    */
124 	0x95, 0x03,         /*          Report Count (3),           * 3x Accels */
125 	0x09, 0x33,         /*              Usage (rX),             */
126 	0x09, 0x34,         /*              Usage (rY),             */
127 	0x09, 0x35,         /*              Usage (rZ),             */
128 	0x81, 0x02,         /*          Input (Variable),           */
129 	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
130 	0x95, 0x03,         /*          Report Count (3),           * Skip Accels 2nd frame */
131 	0x81, 0x02,         /*          Input (Variable),           */
132 	0x05, 0x01,         /*          Usage Page (Desktop),       */
133 	0x09, 0x01,         /*          Usage (Pointer),            */
134 	0x95, 0x03,         /*          Report Count (3),           * 3x Gyros */
135 	0x81, 0x02,         /*          Input (Variable),           */
136 	0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */
137 	0x95, 0x03,         /*          Report Count (3),           * Skip Gyros 2nd frame */
138 	0x81, 0x02,         /*          Input (Variable),           */
139 	0x75, 0x0C,         /*          Report Size (12),           */
140 	0x46, 0xFF, 0x0F,   /*          Physical Maximum (4095),    */
141 	0x26, 0xFF, 0x0F,   /*          Logical Maximum (4095),     */
142 	0x95, 0x04,         /*          Report Count (4),           * Skip Temp and Magnetometers */
143 	0x81, 0x02,         /*          Input (Variable),           */
144 	0x75, 0x08,         /*          Report Size (8),            */
145 	0x46, 0xFF, 0x00,   /*          Physical Maximum (255),     */
146 	0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
147 	0x95, 0x06,         /*          Report Count (6),           * Skip Timestamp and Extension Bytes */
148 	0x81, 0x02,         /*          Input (Variable),           */
149 	0x75, 0x08,         /*          Report Size (8),            */
150 	0x95, 0x30,         /*          Report Count (48),          */
151 	0x09, 0x01,         /*          Usage (Pointer),            */
152 	0x91, 0x02,         /*          Output (Variable),          */
153 	0x75, 0x08,         /*          Report Size (8),            */
154 	0x95, 0x30,         /*          Report Count (48),          */
155 	0x09, 0x01,         /*          Usage (Pointer),            */
156 	0xB1, 0x02,         /*          Feature (Variable),         */
157 	0xC0,               /*      End Collection,                 */
158 	0xA1, 0x02,         /*      Collection (Logical),           */
159 	0x85, 0x02,         /*          Report ID (2),              */
160 	0x75, 0x08,         /*          Report Size (8),            */
161 	0x95, 0x30,         /*          Report Count (48),          */
162 	0x09, 0x01,         /*          Usage (Pointer),            */
163 	0xB1, 0x02,         /*          Feature (Variable),         */
164 	0xC0,               /*      End Collection,                 */
165 	0xA1, 0x02,         /*      Collection (Logical),           */
166 	0x85, 0xEE,         /*          Report ID (238),            */
167 	0x75, 0x08,         /*          Report Size (8),            */
168 	0x95, 0x30,         /*          Report Count (48),          */
169 	0x09, 0x01,         /*          Usage (Pointer),            */
170 	0xB1, 0x02,         /*          Feature (Variable),         */
171 	0xC0,               /*      End Collection,                 */
172 	0xA1, 0x02,         /*      Collection (Logical),           */
173 	0x85, 0xEF,         /*          Report ID (239),            */
174 	0x75, 0x08,         /*          Report Size (8),            */
175 	0x95, 0x30,         /*          Report Count (48),          */
176 	0x09, 0x01,         /*          Usage (Pointer),            */
177 	0xB1, 0x02,         /*          Feature (Variable),         */
178 	0xC0,               /*      End Collection,                 */
179 	0xC0                /*  End Collection                      */
180 };
181 
182 static u8 ps3remote_rdesc[] = {
183 	0x05, 0x01,          /* GUsagePage Generic Desktop */
184 	0x09, 0x05,          /* LUsage 0x05 [Game Pad] */
185 	0xA1, 0x01,          /* MCollection Application (mouse, keyboard) */
186 
187 	 /* Use collection 1 for joypad buttons */
188 	 0xA1, 0x02,         /* MCollection Logical (interrelated data) */
189 
190 	  /*
191 	   * Ignore the 1st byte, maybe it is used for a controller
192 	   * number but it's not needed for correct operation
193 	   */
194 	  0x75, 0x08,        /* GReportSize 0x08 [8] */
195 	  0x95, 0x01,        /* GReportCount 0x01 [1] */
196 	  0x81, 0x01,        /* MInput 0x01 (Const[0] Arr[1] Abs[2]) */
197 
198 	  /*
199 	   * Bytes from 2nd to 4th are a bitmap for joypad buttons, for these
200 	   * buttons multiple keypresses are allowed
201 	   */
202 	  0x05, 0x09,        /* GUsagePage Button */
203 	  0x19, 0x01,        /* LUsageMinimum 0x01 [Button 1 (primary/trigger)] */
204 	  0x29, 0x18,        /* LUsageMaximum 0x18 [Button 24] */
205 	  0x14,              /* GLogicalMinimum [0] */
206 	  0x25, 0x01,        /* GLogicalMaximum 0x01 [1] */
207 	  0x75, 0x01,        /* GReportSize 0x01 [1] */
208 	  0x95, 0x18,        /* GReportCount 0x18 [24] */
209 	  0x81, 0x02,        /* MInput 0x02 (Data[0] Var[1] Abs[2]) */
210 
211 	  0xC0,              /* MEndCollection */
212 
213 	 /* Use collection 2 for remote control buttons */
214 	 0xA1, 0x02,         /* MCollection Logical (interrelated data) */
215 
216 	  /* 5th byte is used for remote control buttons */
217 	  0x05, 0x09,        /* GUsagePage Button */
218 	  0x18,              /* LUsageMinimum [No button pressed] */
219 	  0x29, 0xFE,        /* LUsageMaximum 0xFE [Button 254] */
220 	  0x14,              /* GLogicalMinimum [0] */
221 	  0x26, 0xFE, 0x00,  /* GLogicalMaximum 0x00FE [254] */
222 	  0x75, 0x08,        /* GReportSize 0x08 [8] */
223 	  0x95, 0x01,        /* GReportCount 0x01 [1] */
224 	  0x80,              /* MInput  */
225 
226 	  /*
227 	   * Ignore bytes from 6th to 11th, 6th to 10th are always constant at
228 	   * 0xff and 11th is for press indication
229 	   */
230 	  0x75, 0x08,        /* GReportSize 0x08 [8] */
231 	  0x95, 0x06,        /* GReportCount 0x06 [6] */
232 	  0x81, 0x01,        /* MInput 0x01 (Const[0] Arr[1] Abs[2]) */
233 
234 	  /* 12th byte is for battery strength */
235 	  0x05, 0x06,        /* GUsagePage Generic Device Controls */
236 	  0x09, 0x20,        /* LUsage 0x20 [Battery Strength] */
237 	  0x14,              /* GLogicalMinimum [0] */
238 	  0x25, 0x05,        /* GLogicalMaximum 0x05 [5] */
239 	  0x75, 0x08,        /* GReportSize 0x08 [8] */
240 	  0x95, 0x01,        /* GReportCount 0x01 [1] */
241 	  0x81, 0x02,        /* MInput 0x02 (Data[0] Var[1] Abs[2]) */
242 
243 	  0xC0,              /* MEndCollection */
244 
245 	 0xC0                /* MEndCollection [Game Pad] */
246 };
247 
248 static const unsigned int ps3remote_keymap_joypad_buttons[] = {
249 	[0x01] = KEY_SELECT,
250 	[0x02] = BTN_THUMBL,		/* L3 */
251 	[0x03] = BTN_THUMBR,		/* R3 */
252 	[0x04] = BTN_START,
253 	[0x05] = KEY_UP,
254 	[0x06] = KEY_RIGHT,
255 	[0x07] = KEY_DOWN,
256 	[0x08] = KEY_LEFT,
257 	[0x09] = BTN_TL2,		/* L2 */
258 	[0x0a] = BTN_TR2,		/* R2 */
259 	[0x0b] = BTN_TL,		/* L1 */
260 	[0x0c] = BTN_TR,		/* R1 */
261 	[0x0d] = KEY_OPTION,		/* options/triangle */
262 	[0x0e] = KEY_BACK,		/* back/circle */
263 	[0x0f] = BTN_0,			/* cross */
264 	[0x10] = KEY_SCREEN,		/* view/square */
265 	[0x11] = KEY_HOMEPAGE,		/* PS button */
266 	[0x14] = KEY_ENTER,
267 };
268 static const unsigned int ps3remote_keymap_remote_buttons[] = {
269 	[0x00] = KEY_1,
270 	[0x01] = KEY_2,
271 	[0x02] = KEY_3,
272 	[0x03] = KEY_4,
273 	[0x04] = KEY_5,
274 	[0x05] = KEY_6,
275 	[0x06] = KEY_7,
276 	[0x07] = KEY_8,
277 	[0x08] = KEY_9,
278 	[0x09] = KEY_0,
279 	[0x0e] = KEY_ESC,		/* return */
280 	[0x0f] = KEY_CLEAR,
281 	[0x16] = KEY_EJECTCD,
282 	[0x1a] = KEY_MENU,		/* top menu */
283 	[0x28] = KEY_TIME,
284 	[0x30] = KEY_PREVIOUS,
285 	[0x31] = KEY_NEXT,
286 	[0x32] = KEY_PLAY,
287 	[0x33] = KEY_REWIND,		/* scan back */
288 	[0x34] = KEY_FORWARD,		/* scan forward */
289 	[0x38] = KEY_STOP,
290 	[0x39] = KEY_PAUSE,
291 	[0x40] = KEY_CONTEXT_MENU,	/* pop up/menu */
292 	[0x60] = KEY_FRAMEBACK,		/* slow/step back */
293 	[0x61] = KEY_FRAMEFORWARD,	/* slow/step forward */
294 	[0x63] = KEY_SUBTITLE,
295 	[0x64] = KEY_AUDIO,
296 	[0x65] = KEY_ANGLE,
297 	[0x70] = KEY_INFO,		/* display */
298 	[0x80] = KEY_BLUE,
299 	[0x81] = KEY_RED,
300 	[0x82] = KEY_GREEN,
301 	[0x83] = KEY_YELLOW,
302 };
303 
304 static const unsigned int buzz_keymap[] = {
305 	/*
306 	 * The controller has 4 remote buzzers, each with one LED and 5
307 	 * buttons.
308 	 *
309 	 * We use the mapping chosen by the controller, which is:
310 	 *
311 	 * Key          Offset
312 	 * -------------------
313 	 * Buzz              1
314 	 * Blue              5
315 	 * Orange            4
316 	 * Green             3
317 	 * Yellow            2
318 	 *
319 	 * So, for example, the orange button on the third buzzer is mapped to
320 	 * BTN_TRIGGER_HAPPY14
321 	 */
322 	 [1] = BTN_TRIGGER_HAPPY1,
323 	 [2] = BTN_TRIGGER_HAPPY2,
324 	 [3] = BTN_TRIGGER_HAPPY3,
325 	 [4] = BTN_TRIGGER_HAPPY4,
326 	 [5] = BTN_TRIGGER_HAPPY5,
327 	 [6] = BTN_TRIGGER_HAPPY6,
328 	 [7] = BTN_TRIGGER_HAPPY7,
329 	 [8] = BTN_TRIGGER_HAPPY8,
330 	 [9] = BTN_TRIGGER_HAPPY9,
331 	[10] = BTN_TRIGGER_HAPPY10,
332 	[11] = BTN_TRIGGER_HAPPY11,
333 	[12] = BTN_TRIGGER_HAPPY12,
334 	[13] = BTN_TRIGGER_HAPPY13,
335 	[14] = BTN_TRIGGER_HAPPY14,
336 	[15] = BTN_TRIGGER_HAPPY15,
337 	[16] = BTN_TRIGGER_HAPPY16,
338 	[17] = BTN_TRIGGER_HAPPY17,
339 	[18] = BTN_TRIGGER_HAPPY18,
340 	[19] = BTN_TRIGGER_HAPPY19,
341 	[20] = BTN_TRIGGER_HAPPY20,
342 };
343 
344 /* The Navigation controller is a partial DS3 and uses the same HID report
345  * and hence the same keymap indices, however not not all axes/buttons
346  * are physically present. We use the same axis and button mapping as
347  * the DS3, which uses the Linux gamepad spec.
348  */
349 static const unsigned int navigation_absmap[] = {
350 	[0x30] = ABS_X,
351 	[0x31] = ABS_Y,
352 	[0x33] = ABS_Z, /* L2 */
353 };
354 
355 /* Buttons not physically available on the device, but still available
356  * in the reports are explicitly set to 0 for documentation purposes.
357  */
358 static const unsigned int navigation_keymap[] = {
359 	[0x01] = 0, /* Select */
360 	[0x02] = BTN_THUMBL, /* L3 */
361 	[0x03] = 0, /* R3 */
362 	[0x04] = 0, /* Start */
363 	[0x05] = BTN_DPAD_UP, /* Up */
364 	[0x06] = BTN_DPAD_RIGHT, /* Right */
365 	[0x07] = BTN_DPAD_DOWN, /* Down */
366 	[0x08] = BTN_DPAD_LEFT, /* Left */
367 	[0x09] = BTN_TL2, /* L2 */
368 	[0x0a] = 0, /* R2 */
369 	[0x0b] = BTN_TL, /* L1 */
370 	[0x0c] = 0, /* R1 */
371 	[0x0d] = BTN_NORTH, /* Triangle */
372 	[0x0e] = BTN_EAST, /* Circle */
373 	[0x0f] = BTN_SOUTH, /* Cross */
374 	[0x10] = BTN_WEST, /* Square */
375 	[0x11] = BTN_MODE, /* PS */
376 };
377 
378 static const unsigned int sixaxis_absmap[] = {
379 	[0x30] = ABS_X,
380 	[0x31] = ABS_Y,
381 	[0x32] = ABS_RX, /* right stick X */
382 	[0x35] = ABS_RY, /* right stick Y */
383 };
384 
385 static const unsigned int sixaxis_keymap[] = {
386 	[0x01] = BTN_SELECT, /* Select */
387 	[0x02] = BTN_THUMBL, /* L3 */
388 	[0x03] = BTN_THUMBR, /* R3 */
389 	[0x04] = BTN_START, /* Start */
390 	[0x05] = BTN_DPAD_UP, /* Up */
391 	[0x06] = BTN_DPAD_RIGHT, /* Right */
392 	[0x07] = BTN_DPAD_DOWN, /* Down */
393 	[0x08] = BTN_DPAD_LEFT, /* Left */
394 	[0x09] = BTN_TL2, /* L2 */
395 	[0x0a] = BTN_TR2, /* R2 */
396 	[0x0b] = BTN_TL, /* L1 */
397 	[0x0c] = BTN_TR, /* R1 */
398 	[0x0d] = BTN_NORTH, /* Triangle */
399 	[0x0e] = BTN_EAST, /* Circle */
400 	[0x0f] = BTN_SOUTH, /* Cross */
401 	[0x10] = BTN_WEST, /* Square */
402 	[0x11] = BTN_MODE, /* PS */
403 };
404 
405 static const unsigned int ds4_absmap[] = {
406 	[0x30] = ABS_X,
407 	[0x31] = ABS_Y,
408 	[0x32] = ABS_RX, /* right stick X */
409 	[0x33] = ABS_Z, /* L2 */
410 	[0x34] = ABS_RZ, /* R2 */
411 	[0x35] = ABS_RY, /* right stick Y */
412 };
413 
414 static const unsigned int ds4_keymap[] = {
415 	[0x1] = BTN_WEST, /* Square */
416 	[0x2] = BTN_SOUTH, /* Cross */
417 	[0x3] = BTN_EAST, /* Circle */
418 	[0x4] = BTN_NORTH, /* Triangle */
419 	[0x5] = BTN_TL, /* L1 */
420 	[0x6] = BTN_TR, /* R1 */
421 	[0x7] = BTN_TL2, /* L2 */
422 	[0x8] = BTN_TR2, /* R2 */
423 	[0x9] = BTN_SELECT, /* Share */
424 	[0xa] = BTN_START, /* Options */
425 	[0xb] = BTN_THUMBL, /* L3 */
426 	[0xc] = BTN_THUMBR, /* R3 */
427 	[0xd] = BTN_MODE, /* PS */
428 };
429 
430 static const struct {int x; int y; } ds4_hat_mapping[] = {
431 	{0, -1}, {1, -1}, {1, 0}, {1, 1}, {0, 1}, {-1, 1}, {-1, 0}, {-1, -1},
432 	{0, 0}
433 };
434 
435 static enum power_supply_property sony_battery_props[] = {
436 	POWER_SUPPLY_PROP_PRESENT,
437 	POWER_SUPPLY_PROP_CAPACITY,
438 	POWER_SUPPLY_PROP_SCOPE,
439 	POWER_SUPPLY_PROP_STATUS,
440 };
441 
442 struct sixaxis_led {
443 	u8 time_enabled; /* the total time the led is active (0xff means forever) */
444 	u8 duty_length;  /* how long a cycle is in deciseconds (0 means "really fast") */
445 	u8 enabled;
446 	u8 duty_off; /* % of duty_length the led is off (0xff means 100%) */
447 	u8 duty_on;  /* % of duty_length the led is on (0xff mean 100%) */
448 } __packed;
449 
450 struct sixaxis_rumble {
451 	u8 padding;
452 	u8 right_duration; /* Right motor duration (0xff means forever) */
453 	u8 right_motor_on; /* Right (small) motor on/off, only supports values of 0 or 1 (off/on) */
454 	u8 left_duration;    /* Left motor duration (0xff means forever) */
455 	u8 left_motor_force; /* left (large) motor, supports force values from 0 to 255 */
456 } __packed;
457 
458 struct sixaxis_output_report {
459 	u8 report_id;
460 	struct sixaxis_rumble rumble;
461 	u8 padding[4];
462 	u8 leds_bitmap; /* bitmap of enabled LEDs: LED_1 = 0x02, LED_2 = 0x04, ... */
463 	struct sixaxis_led led[4];    /* LEDx at (4 - x) */
464 	struct sixaxis_led _reserved; /* LED5, not actually soldered */
465 } __packed;
466 
467 union sixaxis_output_report_01 {
468 	struct sixaxis_output_report data;
469 	u8 buf[36];
470 };
471 
472 struct motion_output_report_02 {
473 	u8 type, zero;
474 	u8 r, g, b;
475 	u8 zero2;
476 	u8 rumble;
477 };
478 
479 #define DS4_FEATURE_REPORT_0x02_SIZE 37
480 #define DS4_FEATURE_REPORT_0x05_SIZE 41
481 #define DS4_FEATURE_REPORT_0x81_SIZE 7
482 #define DS4_FEATURE_REPORT_0xA3_SIZE 49
483 #define DS4_INPUT_REPORT_0x11_SIZE 78
484 #define DS4_OUTPUT_REPORT_0x05_SIZE 32
485 #define DS4_OUTPUT_REPORT_0x11_SIZE 78
486 #define SIXAXIS_REPORT_0xF2_SIZE 17
487 #define SIXAXIS_REPORT_0xF5_SIZE 8
488 #define MOTION_REPORT_0x02_SIZE 49
489 
490 /* Offsets relative to USB input report (0x1). Bluetooth (0x11) requires an
491  * additional +2.
492  */
493 #define DS4_INPUT_REPORT_AXIS_OFFSET      1
494 #define DS4_INPUT_REPORT_BUTTON_OFFSET    5
495 #define DS4_INPUT_REPORT_TIMESTAMP_OFFSET 10
496 #define DS4_INPUT_REPORT_GYRO_X_OFFSET   13
497 #define DS4_INPUT_REPORT_BATTERY_OFFSET  30
498 #define DS4_INPUT_REPORT_TOUCHPAD_OFFSET 33
499 
500 #define SENSOR_SUFFIX " Motion Sensors"
501 #define DS4_TOUCHPAD_SUFFIX " Touchpad"
502 
503 /* Default to 4ms poll interval, which is same as USB (not adjustable). */
504 #define DS4_BT_DEFAULT_POLL_INTERVAL_MS 4
505 #define DS4_BT_MAX_POLL_INTERVAL_MS 62
506 #define DS4_GYRO_RES_PER_DEG_S 1024
507 #define DS4_ACC_RES_PER_G      8192
508 
509 #define SIXAXIS_INPUT_REPORT_ACC_X_OFFSET 41
510 #define SIXAXIS_ACC_RES_PER_G 113
511 
512 static DEFINE_SPINLOCK(sony_dev_list_lock);
513 static LIST_HEAD(sony_device_list);
514 static DEFINE_IDA(sony_device_id_allocator);
515 
516 /* Used for calibration of DS4 accelerometer and gyro. */
517 struct ds4_calibration_data {
518 	int abs_code;
519 	short bias;
520 	/* Calibration requires scaling against a sensitivity value, which is a
521 	 * float. Store sensitivity as a fraction to limit floating point
522 	 * calculations until final calibration.
523 	 */
524 	int sens_numer;
525 	int sens_denom;
526 };
527 
528 enum ds4_dongle_state {
529 	DONGLE_DISCONNECTED,
530 	DONGLE_CALIBRATING,
531 	DONGLE_CONNECTED,
532 	DONGLE_DISABLED
533 };
534 
535 enum sony_worker {
536 	SONY_WORKER_STATE,
537 	SONY_WORKER_HOTPLUG
538 };
539 
540 struct sony_sc {
541 	spinlock_t lock;
542 	struct list_head list_node;
543 	struct hid_device *hdev;
544 	struct input_dev *touchpad;
545 	struct input_dev *sensor_dev;
546 	struct led_classdev *leds[MAX_LEDS];
547 	unsigned long quirks;
548 	struct work_struct hotplug_worker;
549 	struct work_struct state_worker;
550 	void (*send_output_report)(struct sony_sc *);
551 	struct power_supply *battery;
552 	struct power_supply_desc battery_desc;
553 	int device_id;
554 	unsigned fw_version;
555 	unsigned hw_version;
556 	u8 *output_report_dmabuf;
557 
558 #ifdef CONFIG_SONY_FF
559 	u8 left;
560 	u8 right;
561 #endif
562 
563 	u8 mac_address[6];
564 	u8 hotplug_worker_initialized;
565 	u8 state_worker_initialized;
566 	u8 defer_initialization;
567 	u8 cable_state;
568 	u8 battery_charging;
569 	u8 battery_capacity;
570 	u8 led_state[MAX_LEDS];
571 	u8 led_delay_on[MAX_LEDS];
572 	u8 led_delay_off[MAX_LEDS];
573 	u8 led_count;
574 
575 	bool timestamp_initialized;
576 	u16 prev_timestamp;
577 	unsigned int timestamp_us;
578 
579 	u8 ds4_bt_poll_interval;
580 	enum ds4_dongle_state ds4_dongle_state;
581 	/* DS4 calibration data */
582 	struct ds4_calibration_data ds4_calib_data[6];
583 };
584 
585 static void sony_set_leds(struct sony_sc *sc);
586 
587 static inline void sony_schedule_work(struct sony_sc *sc,
588 				      enum sony_worker which)
589 {
590 	switch (which) {
591 	case SONY_WORKER_STATE:
592 		if (!sc->defer_initialization)
593 			schedule_work(&sc->state_worker);
594 		break;
595 	case SONY_WORKER_HOTPLUG:
596 		if (sc->hotplug_worker_initialized)
597 			schedule_work(&sc->hotplug_worker);
598 		break;
599 	}
600 }
601 
602 static ssize_t ds4_show_poll_interval(struct device *dev,
603 				struct device_attribute
604 				*attr, char *buf)
605 {
606 	struct hid_device *hdev = to_hid_device(dev);
607 	struct sony_sc *sc = hid_get_drvdata(hdev);
608 
609 	return snprintf(buf, PAGE_SIZE, "%i\n", sc->ds4_bt_poll_interval);
610 }
611 
612 static ssize_t ds4_store_poll_interval(struct device *dev,
613 				struct device_attribute *attr,
614 				const char *buf, size_t count)
615 {
616 	struct hid_device *hdev = to_hid_device(dev);
617 	struct sony_sc *sc = hid_get_drvdata(hdev);
618 	unsigned long flags;
619 	u8 interval;
620 
621 	if (kstrtou8(buf, 0, &interval))
622 		return -EINVAL;
623 
624 	if (interval > DS4_BT_MAX_POLL_INTERVAL_MS)
625 		return -EINVAL;
626 
627 	spin_lock_irqsave(&sc->lock, flags);
628 	sc->ds4_bt_poll_interval = interval;
629 	spin_unlock_irqrestore(&sc->lock, flags);
630 
631 	sony_schedule_work(sc, SONY_WORKER_STATE);
632 
633 	return count;
634 }
635 
636 static DEVICE_ATTR(bt_poll_interval, 0644, ds4_show_poll_interval,
637 		ds4_store_poll_interval);
638 
639 static ssize_t sony_show_firmware_version(struct device *dev,
640 				struct device_attribute
641 				*attr, char *buf)
642 {
643 	struct hid_device *hdev = to_hid_device(dev);
644 	struct sony_sc *sc = hid_get_drvdata(hdev);
645 
646 	return snprintf(buf, PAGE_SIZE, "0x%04x\n", sc->fw_version);
647 }
648 
649 static DEVICE_ATTR(firmware_version, 0444, sony_show_firmware_version, NULL);
650 
651 static ssize_t sony_show_hardware_version(struct device *dev,
652 				struct device_attribute
653 				*attr, char *buf)
654 {
655 	struct hid_device *hdev = to_hid_device(dev);
656 	struct sony_sc *sc = hid_get_drvdata(hdev);
657 
658 	return snprintf(buf, PAGE_SIZE, "0x%04x\n", sc->hw_version);
659 }
660 
661 static DEVICE_ATTR(hardware_version, 0444, sony_show_hardware_version, NULL);
662 
663 static u8 *motion_fixup(struct hid_device *hdev, u8 *rdesc,
664 			     unsigned int *rsize)
665 {
666 	*rsize = sizeof(motion_rdesc);
667 	return motion_rdesc;
668 }
669 
670 static u8 *ps3remote_fixup(struct hid_device *hdev, u8 *rdesc,
671 			     unsigned int *rsize)
672 {
673 	*rsize = sizeof(ps3remote_rdesc);
674 	return ps3remote_rdesc;
675 }
676 
677 static int ps3remote_mapping(struct hid_device *hdev, struct hid_input *hi,
678 			     struct hid_field *field, struct hid_usage *usage,
679 			     unsigned long **bit, int *max)
680 {
681 	unsigned int key = usage->hid & HID_USAGE;
682 
683 	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_BUTTON)
684 		return -1;
685 
686 	switch (usage->collection_index) {
687 	case 1:
688 		if (key >= ARRAY_SIZE(ps3remote_keymap_joypad_buttons))
689 			return -1;
690 
691 		key = ps3remote_keymap_joypad_buttons[key];
692 		if (!key)
693 			return -1;
694 		break;
695 	case 2:
696 		if (key >= ARRAY_SIZE(ps3remote_keymap_remote_buttons))
697 			return -1;
698 
699 		key = ps3remote_keymap_remote_buttons[key];
700 		if (!key)
701 			return -1;
702 		break;
703 	default:
704 		return -1;
705 	}
706 
707 	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, key);
708 	return 1;
709 }
710 
711 static int navigation_mapping(struct hid_device *hdev, struct hid_input *hi,
712 			  struct hid_field *field, struct hid_usage *usage,
713 			  unsigned long **bit, int *max)
714 {
715 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
716 		unsigned int key = usage->hid & HID_USAGE;
717 
718 		if (key >= ARRAY_SIZE(sixaxis_keymap))
719 			return -1;
720 
721 		key = navigation_keymap[key];
722 		if (!key)
723 			return -1;
724 
725 		hid_map_usage_clear(hi, usage, bit, max, EV_KEY, key);
726 		return 1;
727 	} else if (usage->hid == HID_GD_POINTER) {
728 		/* See comment in sixaxis_mapping, basically the L2 (and R2)
729 		 * triggers are reported through GD Pointer.
730 		 * In addition we ignore any analog button 'axes' and only
731 		 * support digital buttons.
732 		 */
733 		switch (usage->usage_index) {
734 		case 8: /* L2 */
735 			usage->hid = HID_GD_Z;
736 			break;
737 		default:
738 			return -1;
739 		}
740 
741 		hid_map_usage_clear(hi, usage, bit, max, EV_ABS, usage->hid & 0xf);
742 		return 1;
743 	} else if ((usage->hid & HID_USAGE_PAGE) == HID_UP_GENDESK) {
744 		unsigned int abs = usage->hid & HID_USAGE;
745 
746 		if (abs >= ARRAY_SIZE(navigation_absmap))
747 			return -1;
748 
749 		abs = navigation_absmap[abs];
750 
751 		hid_map_usage_clear(hi, usage, bit, max, EV_ABS, abs);
752 		return 1;
753 	}
754 
755 	return -1;
756 }
757 
758 
759 static int sixaxis_mapping(struct hid_device *hdev, struct hid_input *hi,
760 			  struct hid_field *field, struct hid_usage *usage,
761 			  unsigned long **bit, int *max)
762 {
763 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
764 		unsigned int key = usage->hid & HID_USAGE;
765 
766 		if (key >= ARRAY_SIZE(sixaxis_keymap))
767 			return -1;
768 
769 		key = sixaxis_keymap[key];
770 		hid_map_usage_clear(hi, usage, bit, max, EV_KEY, key);
771 		return 1;
772 	} else if (usage->hid == HID_GD_POINTER) {
773 		/* The DS3 provides analog values for most buttons and even
774 		 * for HAT axes through GD Pointer. L2 and R2 are reported
775 		 * among these as well instead of as GD Z / RZ. Remap L2
776 		 * and R2 and ignore other analog 'button axes' as there is
777 		 * no good way for reporting them.
778 		 */
779 		switch (usage->usage_index) {
780 		case 8: /* L2 */
781 			usage->hid = HID_GD_Z;
782 			break;
783 		case 9: /* R2 */
784 			usage->hid = HID_GD_RZ;
785 			break;
786 		default:
787 			return -1;
788 		}
789 
790 		hid_map_usage_clear(hi, usage, bit, max, EV_ABS, usage->hid & 0xf);
791 		return 1;
792 	} else if ((usage->hid & HID_USAGE_PAGE) == HID_UP_GENDESK) {
793 		unsigned int abs = usage->hid & HID_USAGE;
794 
795 		if (abs >= ARRAY_SIZE(sixaxis_absmap))
796 			return -1;
797 
798 		abs = sixaxis_absmap[abs];
799 
800 		hid_map_usage_clear(hi, usage, bit, max, EV_ABS, abs);
801 		return 1;
802 	}
803 
804 	return -1;
805 }
806 
807 static int ds4_mapping(struct hid_device *hdev, struct hid_input *hi,
808 		       struct hid_field *field, struct hid_usage *usage,
809 		       unsigned long **bit, int *max)
810 {
811 	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
812 		unsigned int key = usage->hid & HID_USAGE;
813 
814 		if (key >= ARRAY_SIZE(ds4_keymap))
815 			return -1;
816 
817 		key = ds4_keymap[key];
818 		hid_map_usage_clear(hi, usage, bit, max, EV_KEY, key);
819 		return 1;
820 	} else if ((usage->hid & HID_USAGE_PAGE) == HID_UP_GENDESK) {
821 		unsigned int abs = usage->hid & HID_USAGE;
822 
823 		/* Let the HID parser deal with the HAT. */
824 		if (usage->hid == HID_GD_HATSWITCH)
825 			return 0;
826 
827 		if (abs >= ARRAY_SIZE(ds4_absmap))
828 			return -1;
829 
830 		abs = ds4_absmap[abs];
831 		hid_map_usage_clear(hi, usage, bit, max, EV_ABS, abs);
832 		return 1;
833 	}
834 
835 	return 0;
836 }
837 
838 static u8 *sony_report_fixup(struct hid_device *hdev, u8 *rdesc,
839 		unsigned int *rsize)
840 {
841 	struct sony_sc *sc = hid_get_drvdata(hdev);
842 
843 	if (sc->quirks & (SINO_LITE_CONTROLLER | FUTUREMAX_DANCE_MAT))
844 		return rdesc;
845 
846 	/*
847 	 * Some Sony RF receivers wrongly declare the mouse pointer as a
848 	 * a constant non-data variable.
849 	 */
850 	if ((sc->quirks & VAIO_RDESC_CONSTANT) && *rsize >= 56 &&
851 	    /* usage page: generic desktop controls */
852 	    /* rdesc[0] == 0x05 && rdesc[1] == 0x01 && */
853 	    /* usage: mouse */
854 	    rdesc[2] == 0x09 && rdesc[3] == 0x02 &&
855 	    /* input (usage page for x,y axes): constant, variable, relative */
856 	    rdesc[54] == 0x81 && rdesc[55] == 0x07) {
857 		hid_info(hdev, "Fixing up Sony RF Receiver report descriptor\n");
858 		/* input: data, variable, relative */
859 		rdesc[55] = 0x06;
860 	}
861 
862 	if (sc->quirks & MOTION_CONTROLLER)
863 		return motion_fixup(hdev, rdesc, rsize);
864 
865 	if (sc->quirks & PS3REMOTE)
866 		return ps3remote_fixup(hdev, rdesc, rsize);
867 
868 	return rdesc;
869 }
870 
871 static void sixaxis_parse_report(struct sony_sc *sc, u8 *rd, int size)
872 {
873 	static const u8 sixaxis_battery_capacity[] = { 0, 1, 25, 50, 75, 100 };
874 	unsigned long flags;
875 	int offset;
876 	u8 cable_state, battery_capacity, battery_charging;
877 
878 	/*
879 	 * The sixaxis is charging if the battery value is 0xee
880 	 * and it is fully charged if the value is 0xef.
881 	 * It does not report the actual level while charging so it
882 	 * is set to 100% while charging is in progress.
883 	 */
884 	offset = (sc->quirks & MOTION_CONTROLLER) ? 12 : 30;
885 
886 	if (rd[offset] >= 0xee) {
887 		battery_capacity = 100;
888 		battery_charging = !(rd[offset] & 0x01);
889 		cable_state = 1;
890 	} else {
891 		u8 index = rd[offset] <= 5 ? rd[offset] : 5;
892 		battery_capacity = sixaxis_battery_capacity[index];
893 		battery_charging = 0;
894 		cable_state = 0;
895 	}
896 
897 	spin_lock_irqsave(&sc->lock, flags);
898 	sc->cable_state = cable_state;
899 	sc->battery_capacity = battery_capacity;
900 	sc->battery_charging = battery_charging;
901 	spin_unlock_irqrestore(&sc->lock, flags);
902 
903 	if (sc->quirks & SIXAXIS_CONTROLLER) {
904 		int val;
905 
906 		offset = SIXAXIS_INPUT_REPORT_ACC_X_OFFSET;
907 		val = ((rd[offset+1] << 8) | rd[offset]) - 511;
908 		input_report_abs(sc->sensor_dev, ABS_X, val);
909 
910 		/* Y and Z are swapped and inversed */
911 		val = 511 - ((rd[offset+5] << 8) | rd[offset+4]);
912 		input_report_abs(sc->sensor_dev, ABS_Y, val);
913 
914 		val = 511 - ((rd[offset+3] << 8) | rd[offset+2]);
915 		input_report_abs(sc->sensor_dev, ABS_Z, val);
916 
917 		input_sync(sc->sensor_dev);
918 	}
919 }
920 
921 static void dualshock4_parse_report(struct sony_sc *sc, u8 *rd, int size)
922 {
923 	struct hid_input *hidinput = list_entry(sc->hdev->inputs.next,
924 						struct hid_input, list);
925 	struct input_dev *input_dev = hidinput->input;
926 	unsigned long flags;
927 	int n, m, offset, num_touch_data, max_touch_data;
928 	u8 cable_state, battery_capacity, battery_charging;
929 	u16 timestamp;
930 
931 	/* When using Bluetooth the header is 2 bytes longer, so skip these. */
932 	int data_offset = (sc->quirks & DUALSHOCK4_CONTROLLER_BT) ? 2 : 0;
933 
934 	/* Second bit of third button byte is for the touchpad button. */
935 	offset = data_offset + DS4_INPUT_REPORT_BUTTON_OFFSET;
936 	input_report_key(sc->touchpad, BTN_LEFT, rd[offset+2] & 0x2);
937 
938 	/*
939 	 * The default behavior of the Dualshock 4 is to send reports using
940 	 * report type 1 when running over Bluetooth. However, when feature
941 	 * report 2 is requested during the controller initialization it starts
942 	 * sending input reports in report 17. Since report 17 is undefined
943 	 * in the default HID descriptor, the HID layer won't generate events.
944 	 * While it is possible (and this was done before) to fixup the HID
945 	 * descriptor to add this mapping, it was better to do this manually.
946 	 * The reason is there were various pieces software both open and closed
947 	 * source, relying on the descriptors to be the same across various
948 	 * operating systems. If the descriptors wouldn't match some
949 	 * applications e.g. games on Wine would not be able to function due
950 	 * to different descriptors, which such applications are not parsing.
951 	 */
952 	if (rd[0] == 17) {
953 		int value;
954 
955 		offset = data_offset + DS4_INPUT_REPORT_AXIS_OFFSET;
956 		input_report_abs(input_dev, ABS_X, rd[offset]);
957 		input_report_abs(input_dev, ABS_Y, rd[offset+1]);
958 		input_report_abs(input_dev, ABS_RX, rd[offset+2]);
959 		input_report_abs(input_dev, ABS_RY, rd[offset+3]);
960 
961 		value = rd[offset+4] & 0xf;
962 		if (value > 7)
963 			value = 8; /* Center 0, 0 */
964 		input_report_abs(input_dev, ABS_HAT0X, ds4_hat_mapping[value].x);
965 		input_report_abs(input_dev, ABS_HAT0Y, ds4_hat_mapping[value].y);
966 
967 		input_report_key(input_dev, BTN_WEST, rd[offset+4] & 0x10);
968 		input_report_key(input_dev, BTN_SOUTH, rd[offset+4] & 0x20);
969 		input_report_key(input_dev, BTN_EAST, rd[offset+4] & 0x40);
970 		input_report_key(input_dev, BTN_NORTH, rd[offset+4] & 0x80);
971 
972 		input_report_key(input_dev, BTN_TL, rd[offset+5] & 0x1);
973 		input_report_key(input_dev, BTN_TR, rd[offset+5] & 0x2);
974 		input_report_key(input_dev, BTN_TL2, rd[offset+5] & 0x4);
975 		input_report_key(input_dev, BTN_TR2, rd[offset+5] & 0x8);
976 		input_report_key(input_dev, BTN_SELECT, rd[offset+5] & 0x10);
977 		input_report_key(input_dev, BTN_START, rd[offset+5] & 0x20);
978 		input_report_key(input_dev, BTN_THUMBL, rd[offset+5] & 0x40);
979 		input_report_key(input_dev, BTN_THUMBR, rd[offset+5] & 0x80);
980 
981 		input_report_key(input_dev, BTN_MODE, rd[offset+6] & 0x1);
982 
983 		input_report_abs(input_dev, ABS_Z, rd[offset+7]);
984 		input_report_abs(input_dev, ABS_RZ, rd[offset+8]);
985 
986 		input_sync(input_dev);
987 	}
988 
989 	/* Convert timestamp (in 5.33us unit) to timestamp_us */
990 	offset = data_offset + DS4_INPUT_REPORT_TIMESTAMP_OFFSET;
991 	timestamp = get_unaligned_le16(&rd[offset]);
992 	if (!sc->timestamp_initialized) {
993 		sc->timestamp_us = ((unsigned int)timestamp * 16) / 3;
994 		sc->timestamp_initialized = true;
995 	} else {
996 		u16 delta;
997 
998 		if (sc->prev_timestamp > timestamp)
999 			delta = (U16_MAX - sc->prev_timestamp + timestamp + 1);
1000 		else
1001 			delta = timestamp - sc->prev_timestamp;
1002 		sc->timestamp_us += (delta * 16) / 3;
1003 	}
1004 	sc->prev_timestamp = timestamp;
1005 	input_event(sc->sensor_dev, EV_MSC, MSC_TIMESTAMP, sc->timestamp_us);
1006 
1007 	offset = data_offset + DS4_INPUT_REPORT_GYRO_X_OFFSET;
1008 	for (n = 0; n < 6; n++) {
1009 		/* Store data in int for more precision during mult_frac. */
1010 		int raw_data = (short)((rd[offset+1] << 8) | rd[offset]);
1011 		struct ds4_calibration_data *calib = &sc->ds4_calib_data[n];
1012 
1013 		/* High precision is needed during calibration, but the
1014 		 * calibrated values are within 32-bit.
1015 		 * Note: we swap numerator 'x' and 'numer' in mult_frac for
1016 		 *       precision reasons so we don't need 64-bit.
1017 		 */
1018 		int calib_data = mult_frac(calib->sens_numer,
1019 					   raw_data - calib->bias,
1020 					   calib->sens_denom);
1021 
1022 		input_report_abs(sc->sensor_dev, calib->abs_code, calib_data);
1023 		offset += 2;
1024 	}
1025 	input_sync(sc->sensor_dev);
1026 
1027 	/*
1028 	 * The lower 4 bits of byte 30 (or 32 for BT) contain the battery level
1029 	 * and the 5th bit contains the USB cable state.
1030 	 */
1031 	offset = data_offset + DS4_INPUT_REPORT_BATTERY_OFFSET;
1032 	cable_state = (rd[offset] >> 4) & 0x01;
1033 	battery_capacity = rd[offset] & 0x0F;
1034 
1035 	/*
1036 	 * When a USB power source is connected the battery level ranges from
1037 	 * 0 to 10, and when running on battery power it ranges from 0 to 9.
1038 	 * A battery level above 10 when plugged in means charge completed.
1039 	 */
1040 	if (!cable_state || battery_capacity > 10)
1041 		battery_charging = 0;
1042 	else
1043 		battery_charging = 1;
1044 
1045 	if (!cable_state)
1046 		battery_capacity++;
1047 	if (battery_capacity > 10)
1048 		battery_capacity = 10;
1049 
1050 	battery_capacity *= 10;
1051 
1052 	spin_lock_irqsave(&sc->lock, flags);
1053 	sc->cable_state = cable_state;
1054 	sc->battery_capacity = battery_capacity;
1055 	sc->battery_charging = battery_charging;
1056 	spin_unlock_irqrestore(&sc->lock, flags);
1057 
1058 	/*
1059 	 * The Dualshock 4 multi-touch trackpad data starts at offset 33 on USB
1060 	 * and 35 on Bluetooth.
1061 	 * The first byte indicates the number of touch data in the report.
1062 	 * Trackpad data starts 2 bytes later (e.g. 35 for USB).
1063 	 */
1064 	offset = data_offset + DS4_INPUT_REPORT_TOUCHPAD_OFFSET;
1065 	max_touch_data = (sc->quirks & DUALSHOCK4_CONTROLLER_BT) ? 4 : 3;
1066 	if (rd[offset] > 0 && rd[offset] <= max_touch_data)
1067 		num_touch_data = rd[offset];
1068 	else
1069 		num_touch_data = 1;
1070 	offset += 1;
1071 
1072 	for (m = 0; m < num_touch_data; m++) {
1073 		/* Skip past timestamp */
1074 		offset += 1;
1075 
1076 		/*
1077 		 * The first 7 bits of the first byte is a counter and bit 8 is
1078 		 * a touch indicator that is 0 when pressed and 1 when not
1079 		 * pressed.
1080 		 * The next 3 bytes are two 12 bit touch coordinates, X and Y.
1081 		 * The data for the second touch is in the same format and
1082 		 * immediately follows the data for the first.
1083 		 */
1084 		for (n = 0; n < 2; n++) {
1085 			u16 x, y;
1086 			bool active;
1087 
1088 			x = rd[offset+1] | ((rd[offset+2] & 0xF) << 8);
1089 			y = ((rd[offset+2] & 0xF0) >> 4) | (rd[offset+3] << 4);
1090 
1091 			active = !(rd[offset] >> 7);
1092 			input_mt_slot(sc->touchpad, n);
1093 			input_mt_report_slot_state(sc->touchpad, MT_TOOL_FINGER, active);
1094 
1095 			if (active) {
1096 				input_report_abs(sc->touchpad, ABS_MT_POSITION_X, x);
1097 				input_report_abs(sc->touchpad, ABS_MT_POSITION_Y, y);
1098 			}
1099 
1100 			offset += 4;
1101 		}
1102 		input_mt_sync_frame(sc->touchpad);
1103 		input_sync(sc->touchpad);
1104 	}
1105 }
1106 
1107 static void nsg_mrxu_parse_report(struct sony_sc *sc, u8 *rd, int size)
1108 {
1109 	int n, offset, relx, rely;
1110 	u8 active;
1111 
1112 	/*
1113 	 * The NSG-MRxU multi-touch trackpad data starts at offset 1 and
1114 	 *   the touch-related data starts at offset 2.
1115 	 * For the first byte, bit 0 is set when touchpad button is pressed.
1116 	 * Bit 2 is set when a touch is active and the drag (Fn) key is pressed.
1117 	 * This drag key is mapped to BTN_LEFT.  It is operational only when a
1118 	 *   touch point is active.
1119 	 * Bit 4 is set when only the first touch point is active.
1120 	 * Bit 6 is set when only the second touch point is active.
1121 	 * Bits 5 and 7 are set when both touch points are active.
1122 	 * The next 3 bytes are two 12 bit X/Y coordinates for the first touch.
1123 	 * The following byte, offset 5, has the touch width and length.
1124 	 *   Bits 0-4=X (width), bits 5-7=Y (length).
1125 	 * A signed relative X coordinate is at offset 6.
1126 	 * The bytes at offset 7-9 are the second touch X/Y coordinates.
1127 	 * Offset 10 has the second touch width and length.
1128 	 * Offset 11 has the relative Y coordinate.
1129 	 */
1130 	offset = 1;
1131 
1132 	input_report_key(sc->touchpad, BTN_LEFT, rd[offset] & 0x0F);
1133 	active = (rd[offset] >> 4);
1134 	relx = (s8) rd[offset+5];
1135 	rely = ((s8) rd[offset+10]) * -1;
1136 
1137 	offset++;
1138 
1139 	for (n = 0; n < 2; n++) {
1140 		u16 x, y;
1141 		u8 contactx, contacty;
1142 
1143 		x = rd[offset] | ((rd[offset+1] & 0x0F) << 8);
1144 		y = ((rd[offset+1] & 0xF0) >> 4) | (rd[offset+2] << 4);
1145 
1146 		input_mt_slot(sc->touchpad, n);
1147 		input_mt_report_slot_state(sc->touchpad, MT_TOOL_FINGER, active & 0x03);
1148 
1149 		if (active & 0x03) {
1150 			contactx = rd[offset+3] & 0x0F;
1151 			contacty = rd[offset+3] >> 4;
1152 			input_report_abs(sc->touchpad, ABS_MT_TOUCH_MAJOR,
1153 				max(contactx, contacty));
1154 			input_report_abs(sc->touchpad, ABS_MT_TOUCH_MINOR,
1155 				min(contactx, contacty));
1156 			input_report_abs(sc->touchpad, ABS_MT_ORIENTATION,
1157 				(bool) (contactx > contacty));
1158 			input_report_abs(sc->touchpad, ABS_MT_POSITION_X, x);
1159 			input_report_abs(sc->touchpad, ABS_MT_POSITION_Y,
1160 				NSG_MRXU_MAX_Y - y);
1161 			/*
1162 			 * The relative coordinates belong to the first touch
1163 			 * point, when present, or to the second touch point
1164 			 * when the first is not active.
1165 			 */
1166 			if ((n == 0) || ((n == 1) && (active & 0x01))) {
1167 				input_report_rel(sc->touchpad, REL_X, relx);
1168 				input_report_rel(sc->touchpad, REL_Y, rely);
1169 			}
1170 		}
1171 
1172 		offset += 5;
1173 		active >>= 2;
1174 	}
1175 
1176 	input_mt_sync_frame(sc->touchpad);
1177 
1178 	input_sync(sc->touchpad);
1179 }
1180 
1181 static int sony_raw_event(struct hid_device *hdev, struct hid_report *report,
1182 		u8 *rd, int size)
1183 {
1184 	struct sony_sc *sc = hid_get_drvdata(hdev);
1185 
1186 	/*
1187 	 * Sixaxis HID report has acclerometers/gyro with MSByte first, this
1188 	 * has to be BYTE_SWAPPED before passing up to joystick interface
1189 	 */
1190 	if ((sc->quirks & SIXAXIS_CONTROLLER) && rd[0] == 0x01 && size == 49) {
1191 		/*
1192 		 * When connected via Bluetooth the Sixaxis occasionally sends
1193 		 * a report with the second byte 0xff and the rest zeroed.
1194 		 *
1195 		 * This report does not reflect the actual state of the
1196 		 * controller must be ignored to avoid generating false input
1197 		 * events.
1198 		 */
1199 		if (rd[1] == 0xff)
1200 			return -EINVAL;
1201 
1202 		swap(rd[41], rd[42]);
1203 		swap(rd[43], rd[44]);
1204 		swap(rd[45], rd[46]);
1205 		swap(rd[47], rd[48]);
1206 
1207 		sixaxis_parse_report(sc, rd, size);
1208 	} else if ((sc->quirks & MOTION_CONTROLLER_BT) && rd[0] == 0x01 && size == 49) {
1209 		sixaxis_parse_report(sc, rd, size);
1210 	} else if ((sc->quirks & NAVIGATION_CONTROLLER) && rd[0] == 0x01 &&
1211 			size == 49) {
1212 		sixaxis_parse_report(sc, rd, size);
1213 	} else if ((sc->quirks & DUALSHOCK4_CONTROLLER_USB) && rd[0] == 0x01 &&
1214 			size == 64) {
1215 		dualshock4_parse_report(sc, rd, size);
1216 	} else if (((sc->quirks & DUALSHOCK4_CONTROLLER_BT) && rd[0] == 0x11 &&
1217 			size == 78)) {
1218 		/* CRC check */
1219 		u8 bthdr = 0xA1;
1220 		u32 crc;
1221 		u32 report_crc;
1222 
1223 		crc = crc32_le(0xFFFFFFFF, &bthdr, 1);
1224 		crc = ~crc32_le(crc, rd, DS4_INPUT_REPORT_0x11_SIZE-4);
1225 		report_crc = get_unaligned_le32(&rd[DS4_INPUT_REPORT_0x11_SIZE-4]);
1226 		if (crc != report_crc) {
1227 			hid_dbg(sc->hdev, "DualShock 4 input report's CRC check failed, received crc 0x%0x != 0x%0x\n",
1228 				report_crc, crc);
1229 			return -EILSEQ;
1230 		}
1231 
1232 		dualshock4_parse_report(sc, rd, size);
1233 	} else if ((sc->quirks & DUALSHOCK4_DONGLE) && rd[0] == 0x01 &&
1234 			size == 64) {
1235 		unsigned long flags;
1236 		enum ds4_dongle_state dongle_state;
1237 
1238 		/*
1239 		 * In the case of a DS4 USB dongle, bit[2] of byte 31 indicates
1240 		 * if a DS4 is actually connected (indicated by '0').
1241 		 * For non-dongle, this bit is always 0 (connected).
1242 		 */
1243 		bool connected = (rd[31] & 0x04) ? false : true;
1244 
1245 		spin_lock_irqsave(&sc->lock, flags);
1246 		dongle_state = sc->ds4_dongle_state;
1247 		spin_unlock_irqrestore(&sc->lock, flags);
1248 
1249 		/*
1250 		 * The dongle always sends input reports even when no
1251 		 * DS4 is attached. When a DS4 is connected, we need to
1252 		 * obtain calibration data before we can use it.
1253 		 * The code below tracks dongle state and kicks of
1254 		 * calibration when needed and only allows us to process
1255 		 * input if a DS4 is actually connected.
1256 		 */
1257 		if (dongle_state == DONGLE_DISCONNECTED && connected) {
1258 			hid_info(sc->hdev, "DualShock 4 USB dongle: controller connected\n");
1259 			sony_set_leds(sc);
1260 
1261 			spin_lock_irqsave(&sc->lock, flags);
1262 			sc->ds4_dongle_state = DONGLE_CALIBRATING;
1263 			spin_unlock_irqrestore(&sc->lock, flags);
1264 
1265 			sony_schedule_work(sc, SONY_WORKER_HOTPLUG);
1266 
1267 			/* Don't process the report since we don't have
1268 			 * calibration data, but let hidraw have it anyway.
1269 			 */
1270 			return 0;
1271 		} else if ((dongle_state == DONGLE_CONNECTED ||
1272 			    dongle_state == DONGLE_DISABLED) && !connected) {
1273 			hid_info(sc->hdev, "DualShock 4 USB dongle: controller disconnected\n");
1274 
1275 			spin_lock_irqsave(&sc->lock, flags);
1276 			sc->ds4_dongle_state = DONGLE_DISCONNECTED;
1277 			spin_unlock_irqrestore(&sc->lock, flags);
1278 
1279 			/* Return 0, so hidraw can get the report. */
1280 			return 0;
1281 		} else if (dongle_state == DONGLE_CALIBRATING ||
1282 			   dongle_state == DONGLE_DISABLED ||
1283 			   dongle_state == DONGLE_DISCONNECTED) {
1284 			/* Return 0, so hidraw can get the report. */
1285 			return 0;
1286 		}
1287 
1288 		dualshock4_parse_report(sc, rd, size);
1289 
1290 	} else if ((sc->quirks & NSG_MRXU_REMOTE) && rd[0] == 0x02) {
1291 		nsg_mrxu_parse_report(sc, rd, size);
1292 		return 1;
1293 	}
1294 
1295 	if (sc->defer_initialization) {
1296 		sc->defer_initialization = 0;
1297 		sony_schedule_work(sc, SONY_WORKER_STATE);
1298 	}
1299 
1300 	return 0;
1301 }
1302 
1303 static int sony_mapping(struct hid_device *hdev, struct hid_input *hi,
1304 			struct hid_field *field, struct hid_usage *usage,
1305 			unsigned long **bit, int *max)
1306 {
1307 	struct sony_sc *sc = hid_get_drvdata(hdev);
1308 
1309 	if (sc->quirks & BUZZ_CONTROLLER) {
1310 		unsigned int key = usage->hid & HID_USAGE;
1311 
1312 		if ((usage->hid & HID_USAGE_PAGE) != HID_UP_BUTTON)
1313 			return -1;
1314 
1315 		switch (usage->collection_index) {
1316 		case 1:
1317 			if (key >= ARRAY_SIZE(buzz_keymap))
1318 				return -1;
1319 
1320 			key = buzz_keymap[key];
1321 			if (!key)
1322 				return -1;
1323 			break;
1324 		default:
1325 			return -1;
1326 		}
1327 
1328 		hid_map_usage_clear(hi, usage, bit, max, EV_KEY, key);
1329 		return 1;
1330 	}
1331 
1332 	if (sc->quirks & PS3REMOTE)
1333 		return ps3remote_mapping(hdev, hi, field, usage, bit, max);
1334 
1335 	if (sc->quirks & NAVIGATION_CONTROLLER)
1336 		return navigation_mapping(hdev, hi, field, usage, bit, max);
1337 
1338 	if (sc->quirks & SIXAXIS_CONTROLLER)
1339 		return sixaxis_mapping(hdev, hi, field, usage, bit, max);
1340 
1341 	if (sc->quirks & DUALSHOCK4_CONTROLLER)
1342 		return ds4_mapping(hdev, hi, field, usage, bit, max);
1343 
1344 
1345 	/* Let hid-core decide for the others */
1346 	return 0;
1347 }
1348 
1349 static int sony_register_touchpad(struct sony_sc *sc, int touch_count,
1350 		int w, int h, int touch_major, int touch_minor, int orientation)
1351 {
1352 	size_t name_sz;
1353 	char *name;
1354 	int ret;
1355 
1356 	sc->touchpad = input_allocate_device();
1357 	if (!sc->touchpad)
1358 		return -ENOMEM;
1359 
1360 	input_set_drvdata(sc->touchpad, sc);
1361 	sc->touchpad->dev.parent = &sc->hdev->dev;
1362 	sc->touchpad->phys = sc->hdev->phys;
1363 	sc->touchpad->uniq = sc->hdev->uniq;
1364 	sc->touchpad->id.bustype = sc->hdev->bus;
1365 	sc->touchpad->id.vendor = sc->hdev->vendor;
1366 	sc->touchpad->id.product = sc->hdev->product;
1367 	sc->touchpad->id.version = sc->hdev->version;
1368 
1369 	/* Append a suffix to the controller name as there are various
1370 	 * DS4 compatible non-Sony devices with different names.
1371 	 */
1372 	name_sz = strlen(sc->hdev->name) + sizeof(DS4_TOUCHPAD_SUFFIX);
1373 	name = kzalloc(name_sz, GFP_KERNEL);
1374 	if (!name) {
1375 		ret = -ENOMEM;
1376 		goto err;
1377 	}
1378 	snprintf(name, name_sz, "%s" DS4_TOUCHPAD_SUFFIX, sc->hdev->name);
1379 	sc->touchpad->name = name;
1380 
1381 	/* We map the button underneath the touchpad to BTN_LEFT. */
1382 	__set_bit(EV_KEY, sc->touchpad->evbit);
1383 	__set_bit(BTN_LEFT, sc->touchpad->keybit);
1384 	__set_bit(INPUT_PROP_BUTTONPAD, sc->touchpad->propbit);
1385 
1386 	input_set_abs_params(sc->touchpad, ABS_MT_POSITION_X, 0, w, 0, 0);
1387 	input_set_abs_params(sc->touchpad, ABS_MT_POSITION_Y, 0, h, 0, 0);
1388 
1389 	if (touch_major > 0) {
1390 		input_set_abs_params(sc->touchpad, ABS_MT_TOUCH_MAJOR,
1391 			0, touch_major, 0, 0);
1392 		if (touch_minor > 0)
1393 			input_set_abs_params(sc->touchpad, ABS_MT_TOUCH_MINOR,
1394 				0, touch_minor, 0, 0);
1395 		if (orientation > 0)
1396 			input_set_abs_params(sc->touchpad, ABS_MT_ORIENTATION,
1397 				0, orientation, 0, 0);
1398 	}
1399 
1400 	if (sc->quirks & NSG_MRXU_REMOTE) {
1401 		__set_bit(EV_REL, sc->touchpad->evbit);
1402 	}
1403 
1404 	ret = input_mt_init_slots(sc->touchpad, touch_count, INPUT_MT_POINTER);
1405 	if (ret < 0)
1406 		goto err;
1407 
1408 	ret = input_register_device(sc->touchpad);
1409 	if (ret < 0)
1410 		goto err;
1411 
1412 	return 0;
1413 
1414 err:
1415 	kfree(sc->touchpad->name);
1416 	sc->touchpad->name = NULL;
1417 
1418 	input_free_device(sc->touchpad);
1419 	sc->touchpad = NULL;
1420 
1421 	return ret;
1422 }
1423 
1424 static void sony_unregister_touchpad(struct sony_sc *sc)
1425 {
1426 	if (!sc->touchpad)
1427 		return;
1428 
1429 	kfree(sc->touchpad->name);
1430 	sc->touchpad->name = NULL;
1431 
1432 	input_unregister_device(sc->touchpad);
1433 	sc->touchpad = NULL;
1434 }
1435 
1436 static int sony_register_sensors(struct sony_sc *sc)
1437 {
1438 	size_t name_sz;
1439 	char *name;
1440 	int ret;
1441 	int range;
1442 
1443 	sc->sensor_dev = input_allocate_device();
1444 	if (!sc->sensor_dev)
1445 		return -ENOMEM;
1446 
1447 	input_set_drvdata(sc->sensor_dev, sc);
1448 	sc->sensor_dev->dev.parent = &sc->hdev->dev;
1449 	sc->sensor_dev->phys = sc->hdev->phys;
1450 	sc->sensor_dev->uniq = sc->hdev->uniq;
1451 	sc->sensor_dev->id.bustype = sc->hdev->bus;
1452 	sc->sensor_dev->id.vendor = sc->hdev->vendor;
1453 	sc->sensor_dev->id.product = sc->hdev->product;
1454 	sc->sensor_dev->id.version = sc->hdev->version;
1455 
1456 	/* Append a suffix to the controller name as there are various
1457 	 * DS4 compatible non-Sony devices with different names.
1458 	 */
1459 	name_sz = strlen(sc->hdev->name) + sizeof(SENSOR_SUFFIX);
1460 	name = kzalloc(name_sz, GFP_KERNEL);
1461 	if (!name) {
1462 		ret = -ENOMEM;
1463 		goto err;
1464 	}
1465 	snprintf(name, name_sz, "%s" SENSOR_SUFFIX, sc->hdev->name);
1466 	sc->sensor_dev->name = name;
1467 
1468 	if (sc->quirks & SIXAXIS_CONTROLLER) {
1469 		/* For the DS3 we only support the accelerometer, which works
1470 		 * quite well even without calibration. The device also has
1471 		 * a 1-axis gyro, but it is very difficult to manage from within
1472 		 * the driver even to get data, the sensor is inaccurate and
1473 		 * the behavior is very different between hardware revisions.
1474 		 */
1475 		input_set_abs_params(sc->sensor_dev, ABS_X, -512, 511, 4, 0);
1476 		input_set_abs_params(sc->sensor_dev, ABS_Y, -512, 511, 4, 0);
1477 		input_set_abs_params(sc->sensor_dev, ABS_Z, -512, 511, 4, 0);
1478 		input_abs_set_res(sc->sensor_dev, ABS_X, SIXAXIS_ACC_RES_PER_G);
1479 		input_abs_set_res(sc->sensor_dev, ABS_Y, SIXAXIS_ACC_RES_PER_G);
1480 		input_abs_set_res(sc->sensor_dev, ABS_Z, SIXAXIS_ACC_RES_PER_G);
1481 	} else if (sc->quirks & DUALSHOCK4_CONTROLLER) {
1482 		range = DS4_ACC_RES_PER_G*4;
1483 		input_set_abs_params(sc->sensor_dev, ABS_X, -range, range, 16, 0);
1484 		input_set_abs_params(sc->sensor_dev, ABS_Y, -range, range, 16, 0);
1485 		input_set_abs_params(sc->sensor_dev, ABS_Z, -range, range, 16, 0);
1486 		input_abs_set_res(sc->sensor_dev, ABS_X, DS4_ACC_RES_PER_G);
1487 		input_abs_set_res(sc->sensor_dev, ABS_Y, DS4_ACC_RES_PER_G);
1488 		input_abs_set_res(sc->sensor_dev, ABS_Z, DS4_ACC_RES_PER_G);
1489 
1490 		range = DS4_GYRO_RES_PER_DEG_S*2048;
1491 		input_set_abs_params(sc->sensor_dev, ABS_RX, -range, range, 16, 0);
1492 		input_set_abs_params(sc->sensor_dev, ABS_RY, -range, range, 16, 0);
1493 		input_set_abs_params(sc->sensor_dev, ABS_RZ, -range, range, 16, 0);
1494 		input_abs_set_res(sc->sensor_dev, ABS_RX, DS4_GYRO_RES_PER_DEG_S);
1495 		input_abs_set_res(sc->sensor_dev, ABS_RY, DS4_GYRO_RES_PER_DEG_S);
1496 		input_abs_set_res(sc->sensor_dev, ABS_RZ, DS4_GYRO_RES_PER_DEG_S);
1497 
1498 		__set_bit(EV_MSC, sc->sensor_dev->evbit);
1499 		__set_bit(MSC_TIMESTAMP, sc->sensor_dev->mscbit);
1500 	}
1501 
1502 	__set_bit(INPUT_PROP_ACCELEROMETER, sc->sensor_dev->propbit);
1503 
1504 	ret = input_register_device(sc->sensor_dev);
1505 	if (ret < 0)
1506 		goto err;
1507 
1508 	return 0;
1509 
1510 err:
1511 	kfree(sc->sensor_dev->name);
1512 	sc->sensor_dev->name = NULL;
1513 
1514 	input_free_device(sc->sensor_dev);
1515 	sc->sensor_dev = NULL;
1516 
1517 	return ret;
1518 }
1519 
1520 static void sony_unregister_sensors(struct sony_sc *sc)
1521 {
1522 	if (!sc->sensor_dev)
1523 		return;
1524 
1525 	kfree(sc->sensor_dev->name);
1526 	sc->sensor_dev->name = NULL;
1527 
1528 	input_unregister_device(sc->sensor_dev);
1529 	sc->sensor_dev = NULL;
1530 }
1531 
1532 
1533 /*
1534  * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
1535  * to "operational".  Without this, the ps3 controller will not report any
1536  * events.
1537  */
1538 static int sixaxis_set_operational_usb(struct hid_device *hdev)
1539 {
1540 	const int buf_size =
1541 		max(SIXAXIS_REPORT_0xF2_SIZE, SIXAXIS_REPORT_0xF5_SIZE);
1542 	u8 *buf;
1543 	int ret;
1544 
1545 	buf = kmalloc(buf_size, GFP_KERNEL);
1546 	if (!buf)
1547 		return -ENOMEM;
1548 
1549 	ret = hid_hw_raw_request(hdev, 0xf2, buf, SIXAXIS_REPORT_0xF2_SIZE,
1550 				 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
1551 	if (ret < 0) {
1552 		hid_err(hdev, "can't set operational mode: step 1\n");
1553 		goto out;
1554 	}
1555 
1556 	/*
1557 	 * Some compatible controllers like the Speedlink Strike FX and
1558 	 * Gasia need another query plus an USB interrupt to get operational.
1559 	 */
1560 	ret = hid_hw_raw_request(hdev, 0xf5, buf, SIXAXIS_REPORT_0xF5_SIZE,
1561 				 HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
1562 	if (ret < 0) {
1563 		hid_err(hdev, "can't set operational mode: step 2\n");
1564 		goto out;
1565 	}
1566 
1567 	/*
1568 	 * But the USB interrupt would cause SHANWAN controllers to
1569 	 * start rumbling non-stop.
1570 	 */
1571 	if (strcmp(hdev->name, "SHANWAN PS3 GamePad")) {
1572 		ret = hid_hw_output_report(hdev, buf, 1);
1573 		if (ret < 0) {
1574 			hid_info(hdev, "can't set operational mode: step 3, ignoring\n");
1575 			ret = 0;
1576 		}
1577 	}
1578 
1579 out:
1580 	kfree(buf);
1581 
1582 	return ret;
1583 }
1584 
1585 static int sixaxis_set_operational_bt(struct hid_device *hdev)
1586 {
1587 	static const u8 report[] = { 0xf4, 0x42, 0x03, 0x00, 0x00 };
1588 	u8 *buf;
1589 	int ret;
1590 
1591 	buf = kmemdup(report, sizeof(report), GFP_KERNEL);
1592 	if (!buf)
1593 		return -ENOMEM;
1594 
1595 	ret = hid_hw_raw_request(hdev, buf[0], buf, sizeof(report),
1596 				  HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
1597 
1598 	kfree(buf);
1599 
1600 	return ret;
1601 }
1602 
1603 /*
1604  * Request DS4 calibration data for the motion sensors.
1605  * For Bluetooth this also affects the operating mode (see below).
1606  */
1607 static int dualshock4_get_calibration_data(struct sony_sc *sc)
1608 {
1609 	u8 *buf;
1610 	int ret;
1611 	short gyro_pitch_bias, gyro_pitch_plus, gyro_pitch_minus;
1612 	short gyro_yaw_bias, gyro_yaw_plus, gyro_yaw_minus;
1613 	short gyro_roll_bias, gyro_roll_plus, gyro_roll_minus;
1614 	short gyro_speed_plus, gyro_speed_minus;
1615 	short acc_x_plus, acc_x_minus;
1616 	short acc_y_plus, acc_y_minus;
1617 	short acc_z_plus, acc_z_minus;
1618 	int speed_2x;
1619 	int range_2g;
1620 
1621 	/* For Bluetooth we use a different request, which supports CRC.
1622 	 * Note: in Bluetooth mode feature report 0x02 also changes the state
1623 	 * of the controller, so that it sends input reports of type 0x11.
1624 	 */
1625 	if (sc->quirks & (DUALSHOCK4_CONTROLLER_USB | DUALSHOCK4_DONGLE)) {
1626 		buf = kmalloc(DS4_FEATURE_REPORT_0x02_SIZE, GFP_KERNEL);
1627 		if (!buf)
1628 			return -ENOMEM;
1629 
1630 		ret = hid_hw_raw_request(sc->hdev, 0x02, buf,
1631 					 DS4_FEATURE_REPORT_0x02_SIZE,
1632 					 HID_FEATURE_REPORT,
1633 					 HID_REQ_GET_REPORT);
1634 		if (ret < 0)
1635 			goto err_stop;
1636 	} else {
1637 		u8 bthdr = 0xA3;
1638 		u32 crc;
1639 		u32 report_crc;
1640 		int retries;
1641 
1642 		buf = kmalloc(DS4_FEATURE_REPORT_0x05_SIZE, GFP_KERNEL);
1643 		if (!buf)
1644 			return -ENOMEM;
1645 
1646 		for (retries = 0; retries < 3; retries++) {
1647 			ret = hid_hw_raw_request(sc->hdev, 0x05, buf,
1648 						 DS4_FEATURE_REPORT_0x05_SIZE,
1649 						 HID_FEATURE_REPORT,
1650 						 HID_REQ_GET_REPORT);
1651 			if (ret < 0)
1652 				goto err_stop;
1653 
1654 			/* CRC check */
1655 			crc = crc32_le(0xFFFFFFFF, &bthdr, 1);
1656 			crc = ~crc32_le(crc, buf, DS4_FEATURE_REPORT_0x05_SIZE-4);
1657 			report_crc = get_unaligned_le32(&buf[DS4_FEATURE_REPORT_0x05_SIZE-4]);
1658 			if (crc != report_crc) {
1659 				hid_warn(sc->hdev, "DualShock 4 calibration report's CRC check failed, received crc 0x%0x != 0x%0x\n",
1660 					report_crc, crc);
1661 				if (retries < 2) {
1662 					hid_warn(sc->hdev, "Retrying DualShock 4 get calibration report request\n");
1663 					continue;
1664 				} else {
1665 					ret = -EILSEQ;
1666 					goto err_stop;
1667 				}
1668 			} else {
1669 				break;
1670 			}
1671 		}
1672 	}
1673 
1674 	gyro_pitch_bias  = get_unaligned_le16(&buf[1]);
1675 	gyro_yaw_bias    = get_unaligned_le16(&buf[3]);
1676 	gyro_roll_bias   = get_unaligned_le16(&buf[5]);
1677 	if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {
1678 		gyro_pitch_plus  = get_unaligned_le16(&buf[7]);
1679 		gyro_pitch_minus = get_unaligned_le16(&buf[9]);
1680 		gyro_yaw_plus    = get_unaligned_le16(&buf[11]);
1681 		gyro_yaw_minus   = get_unaligned_le16(&buf[13]);
1682 		gyro_roll_plus   = get_unaligned_le16(&buf[15]);
1683 		gyro_roll_minus  = get_unaligned_le16(&buf[17]);
1684 	} else {
1685 		/* BT + Dongle */
1686 		gyro_pitch_plus  = get_unaligned_le16(&buf[7]);
1687 		gyro_yaw_plus    = get_unaligned_le16(&buf[9]);
1688 		gyro_roll_plus   = get_unaligned_le16(&buf[11]);
1689 		gyro_pitch_minus = get_unaligned_le16(&buf[13]);
1690 		gyro_yaw_minus   = get_unaligned_le16(&buf[15]);
1691 		gyro_roll_minus  = get_unaligned_le16(&buf[17]);
1692 	}
1693 	gyro_speed_plus  = get_unaligned_le16(&buf[19]);
1694 	gyro_speed_minus = get_unaligned_le16(&buf[21]);
1695 	acc_x_plus       = get_unaligned_le16(&buf[23]);
1696 	acc_x_minus      = get_unaligned_le16(&buf[25]);
1697 	acc_y_plus       = get_unaligned_le16(&buf[27]);
1698 	acc_y_minus      = get_unaligned_le16(&buf[29]);
1699 	acc_z_plus       = get_unaligned_le16(&buf[31]);
1700 	acc_z_minus      = get_unaligned_le16(&buf[33]);
1701 
1702 	/* Set gyroscope calibration and normalization parameters.
1703 	 * Data values will be normalized to 1/DS4_GYRO_RES_PER_DEG_S degree/s.
1704 	 */
1705 	speed_2x = (gyro_speed_plus + gyro_speed_minus);
1706 	sc->ds4_calib_data[0].abs_code = ABS_RX;
1707 	sc->ds4_calib_data[0].bias = gyro_pitch_bias;
1708 	sc->ds4_calib_data[0].sens_numer = speed_2x*DS4_GYRO_RES_PER_DEG_S;
1709 	sc->ds4_calib_data[0].sens_denom = gyro_pitch_plus - gyro_pitch_minus;
1710 
1711 	sc->ds4_calib_data[1].abs_code = ABS_RY;
1712 	sc->ds4_calib_data[1].bias = gyro_yaw_bias;
1713 	sc->ds4_calib_data[1].sens_numer = speed_2x*DS4_GYRO_RES_PER_DEG_S;
1714 	sc->ds4_calib_data[1].sens_denom = gyro_yaw_plus - gyro_yaw_minus;
1715 
1716 	sc->ds4_calib_data[2].abs_code = ABS_RZ;
1717 	sc->ds4_calib_data[2].bias = gyro_roll_bias;
1718 	sc->ds4_calib_data[2].sens_numer = speed_2x*DS4_GYRO_RES_PER_DEG_S;
1719 	sc->ds4_calib_data[2].sens_denom = gyro_roll_plus - gyro_roll_minus;
1720 
1721 	/* Set accelerometer calibration and normalization parameters.
1722 	 * Data values will be normalized to 1/DS4_ACC_RES_PER_G G.
1723 	 */
1724 	range_2g = acc_x_plus - acc_x_minus;
1725 	sc->ds4_calib_data[3].abs_code = ABS_X;
1726 	sc->ds4_calib_data[3].bias = acc_x_plus - range_2g / 2;
1727 	sc->ds4_calib_data[3].sens_numer = 2*DS4_ACC_RES_PER_G;
1728 	sc->ds4_calib_data[3].sens_denom = range_2g;
1729 
1730 	range_2g = acc_y_plus - acc_y_minus;
1731 	sc->ds4_calib_data[4].abs_code = ABS_Y;
1732 	sc->ds4_calib_data[4].bias = acc_y_plus - range_2g / 2;
1733 	sc->ds4_calib_data[4].sens_numer = 2*DS4_ACC_RES_PER_G;
1734 	sc->ds4_calib_data[4].sens_denom = range_2g;
1735 
1736 	range_2g = acc_z_plus - acc_z_minus;
1737 	sc->ds4_calib_data[5].abs_code = ABS_Z;
1738 	sc->ds4_calib_data[5].bias = acc_z_plus - range_2g / 2;
1739 	sc->ds4_calib_data[5].sens_numer = 2*DS4_ACC_RES_PER_G;
1740 	sc->ds4_calib_data[5].sens_denom = range_2g;
1741 
1742 err_stop:
1743 	kfree(buf);
1744 	return ret;
1745 }
1746 
1747 static void dualshock4_calibration_work(struct work_struct *work)
1748 {
1749 	struct sony_sc *sc = container_of(work, struct sony_sc, hotplug_worker);
1750 	unsigned long flags;
1751 	enum ds4_dongle_state dongle_state;
1752 	int ret;
1753 
1754 	ret = dualshock4_get_calibration_data(sc);
1755 	if (ret < 0) {
1756 		/* This call is very unlikely to fail for the dongle. When it
1757 		 * fails we are probably in a very bad state, so mark the
1758 		 * dongle as disabled. We will re-enable the dongle if a new
1759 		 * DS4 hotplug is detect from sony_raw_event as any issues
1760 		 * are likely resolved then (the dongle is quite stupid).
1761 		 */
1762 		hid_err(sc->hdev, "DualShock 4 USB dongle: calibration failed, disabling device\n");
1763 		dongle_state = DONGLE_DISABLED;
1764 	} else {
1765 		hid_info(sc->hdev, "DualShock 4 USB dongle: calibration completed\n");
1766 		dongle_state = DONGLE_CONNECTED;
1767 	}
1768 
1769 	spin_lock_irqsave(&sc->lock, flags);
1770 	sc->ds4_dongle_state = dongle_state;
1771 	spin_unlock_irqrestore(&sc->lock, flags);
1772 }
1773 
1774 static int dualshock4_get_version_info(struct sony_sc *sc)
1775 {
1776 	u8 *buf;
1777 	int ret;
1778 
1779 	buf = kmalloc(DS4_FEATURE_REPORT_0xA3_SIZE, GFP_KERNEL);
1780 	if (!buf)
1781 		return -ENOMEM;
1782 
1783 	ret = hid_hw_raw_request(sc->hdev, 0xA3, buf,
1784 				 DS4_FEATURE_REPORT_0xA3_SIZE,
1785 				 HID_FEATURE_REPORT,
1786 				 HID_REQ_GET_REPORT);
1787 	if (ret < 0) {
1788 		kfree(buf);
1789 		return ret;
1790 	}
1791 
1792 	sc->hw_version = get_unaligned_le16(&buf[35]);
1793 	sc->fw_version = get_unaligned_le16(&buf[41]);
1794 
1795 	kfree(buf);
1796 	return 0;
1797 }
1798 
1799 static void sixaxis_set_leds_from_id(struct sony_sc *sc)
1800 {
1801 	static const u8 sixaxis_leds[10][4] = {
1802 				{ 0x01, 0x00, 0x00, 0x00 },
1803 				{ 0x00, 0x01, 0x00, 0x00 },
1804 				{ 0x00, 0x00, 0x01, 0x00 },
1805 				{ 0x00, 0x00, 0x00, 0x01 },
1806 				{ 0x01, 0x00, 0x00, 0x01 },
1807 				{ 0x00, 0x01, 0x00, 0x01 },
1808 				{ 0x00, 0x00, 0x01, 0x01 },
1809 				{ 0x01, 0x00, 0x01, 0x01 },
1810 				{ 0x00, 0x01, 0x01, 0x01 },
1811 				{ 0x01, 0x01, 0x01, 0x01 }
1812 	};
1813 
1814 	int id = sc->device_id;
1815 
1816 	BUILD_BUG_ON(MAX_LEDS < ARRAY_SIZE(sixaxis_leds[0]));
1817 
1818 	if (id < 0)
1819 		return;
1820 
1821 	id %= 10;
1822 	memcpy(sc->led_state, sixaxis_leds[id], sizeof(sixaxis_leds[id]));
1823 }
1824 
1825 static void dualshock4_set_leds_from_id(struct sony_sc *sc)
1826 {
1827 	/* The first 4 color/index entries match what the PS4 assigns */
1828 	static const u8 color_code[7][3] = {
1829 			/* Blue   */	{ 0x00, 0x00, 0x40 },
1830 			/* Red	  */	{ 0x40, 0x00, 0x00 },
1831 			/* Green  */	{ 0x00, 0x40, 0x00 },
1832 			/* Pink   */	{ 0x20, 0x00, 0x20 },
1833 			/* Orange */	{ 0x02, 0x01, 0x00 },
1834 			/* Teal   */	{ 0x00, 0x01, 0x01 },
1835 			/* White  */	{ 0x01, 0x01, 0x01 }
1836 	};
1837 
1838 	int id = sc->device_id;
1839 
1840 	BUILD_BUG_ON(MAX_LEDS < ARRAY_SIZE(color_code[0]));
1841 
1842 	if (id < 0)
1843 		return;
1844 
1845 	id %= 7;
1846 	memcpy(sc->led_state, color_code[id], sizeof(color_code[id]));
1847 }
1848 
1849 static void buzz_set_leds(struct sony_sc *sc)
1850 {
1851 	struct hid_device *hdev = sc->hdev;
1852 	struct list_head *report_list =
1853 		&hdev->report_enum[HID_OUTPUT_REPORT].report_list;
1854 	struct hid_report *report = list_entry(report_list->next,
1855 		struct hid_report, list);
1856 	s32 *value = report->field[0]->value;
1857 
1858 	BUILD_BUG_ON(MAX_LEDS < 4);
1859 
1860 	value[0] = 0x00;
1861 	value[1] = sc->led_state[0] ? 0xff : 0x00;
1862 	value[2] = sc->led_state[1] ? 0xff : 0x00;
1863 	value[3] = sc->led_state[2] ? 0xff : 0x00;
1864 	value[4] = sc->led_state[3] ? 0xff : 0x00;
1865 	value[5] = 0x00;
1866 	value[6] = 0x00;
1867 	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
1868 }
1869 
1870 static void sony_set_leds(struct sony_sc *sc)
1871 {
1872 	if (!(sc->quirks & BUZZ_CONTROLLER))
1873 		sony_schedule_work(sc, SONY_WORKER_STATE);
1874 	else
1875 		buzz_set_leds(sc);
1876 }
1877 
1878 static void sony_led_set_brightness(struct led_classdev *led,
1879 				    enum led_brightness value)
1880 {
1881 	struct device *dev = led->dev->parent;
1882 	struct hid_device *hdev = to_hid_device(dev);
1883 	struct sony_sc *drv_data;
1884 
1885 	int n;
1886 	int force_update;
1887 
1888 	drv_data = hid_get_drvdata(hdev);
1889 	if (!drv_data) {
1890 		hid_err(hdev, "No device data\n");
1891 		return;
1892 	}
1893 
1894 	/*
1895 	 * The Sixaxis on USB will override any LED settings sent to it
1896 	 * and keep flashing all of the LEDs until the PS button is pressed.
1897 	 * Updates, even if redundant, must be always be sent to the
1898 	 * controller to avoid having to toggle the state of an LED just to
1899 	 * stop the flashing later on.
1900 	 */
1901 	force_update = !!(drv_data->quirks & SIXAXIS_CONTROLLER_USB);
1902 
1903 	for (n = 0; n < drv_data->led_count; n++) {
1904 		if (led == drv_data->leds[n] && (force_update ||
1905 			(value != drv_data->led_state[n] ||
1906 			drv_data->led_delay_on[n] ||
1907 			drv_data->led_delay_off[n]))) {
1908 
1909 			drv_data->led_state[n] = value;
1910 
1911 			/* Setting the brightness stops the blinking */
1912 			drv_data->led_delay_on[n] = 0;
1913 			drv_data->led_delay_off[n] = 0;
1914 
1915 			sony_set_leds(drv_data);
1916 			break;
1917 		}
1918 	}
1919 }
1920 
1921 static enum led_brightness sony_led_get_brightness(struct led_classdev *led)
1922 {
1923 	struct device *dev = led->dev->parent;
1924 	struct hid_device *hdev = to_hid_device(dev);
1925 	struct sony_sc *drv_data;
1926 
1927 	int n;
1928 
1929 	drv_data = hid_get_drvdata(hdev);
1930 	if (!drv_data) {
1931 		hid_err(hdev, "No device data\n");
1932 		return LED_OFF;
1933 	}
1934 
1935 	for (n = 0; n < drv_data->led_count; n++) {
1936 		if (led == drv_data->leds[n])
1937 			return drv_data->led_state[n];
1938 	}
1939 
1940 	return LED_OFF;
1941 }
1942 
1943 static int sony_led_blink_set(struct led_classdev *led, unsigned long *delay_on,
1944 				unsigned long *delay_off)
1945 {
1946 	struct device *dev = led->dev->parent;
1947 	struct hid_device *hdev = to_hid_device(dev);
1948 	struct sony_sc *drv_data = hid_get_drvdata(hdev);
1949 	int n;
1950 	u8 new_on, new_off;
1951 
1952 	if (!drv_data) {
1953 		hid_err(hdev, "No device data\n");
1954 		return -EINVAL;
1955 	}
1956 
1957 	/* Max delay is 255 deciseconds or 2550 milliseconds */
1958 	if (*delay_on > 2550)
1959 		*delay_on = 2550;
1960 	if (*delay_off > 2550)
1961 		*delay_off = 2550;
1962 
1963 	/* Blink at 1 Hz if both values are zero */
1964 	if (!*delay_on && !*delay_off)
1965 		*delay_on = *delay_off = 500;
1966 
1967 	new_on = *delay_on / 10;
1968 	new_off = *delay_off / 10;
1969 
1970 	for (n = 0; n < drv_data->led_count; n++) {
1971 		if (led == drv_data->leds[n])
1972 			break;
1973 	}
1974 
1975 	/* This LED is not registered on this device */
1976 	if (n >= drv_data->led_count)
1977 		return -EINVAL;
1978 
1979 	/* Don't schedule work if the values didn't change */
1980 	if (new_on != drv_data->led_delay_on[n] ||
1981 		new_off != drv_data->led_delay_off[n]) {
1982 		drv_data->led_delay_on[n] = new_on;
1983 		drv_data->led_delay_off[n] = new_off;
1984 		sony_schedule_work(drv_data, SONY_WORKER_STATE);
1985 	}
1986 
1987 	return 0;
1988 }
1989 
1990 static void sony_leds_remove(struct sony_sc *sc)
1991 {
1992 	struct led_classdev *led;
1993 	int n;
1994 
1995 	BUG_ON(!(sc->quirks & SONY_LED_SUPPORT));
1996 
1997 	for (n = 0; n < sc->led_count; n++) {
1998 		led = sc->leds[n];
1999 		sc->leds[n] = NULL;
2000 		if (!led)
2001 			continue;
2002 		led_classdev_unregister(led);
2003 		kfree(led);
2004 	}
2005 
2006 	sc->led_count = 0;
2007 }
2008 
2009 static int sony_leds_init(struct sony_sc *sc)
2010 {
2011 	struct hid_device *hdev = sc->hdev;
2012 	int n, ret = 0;
2013 	int use_ds4_names;
2014 	struct led_classdev *led;
2015 	size_t name_sz;
2016 	char *name;
2017 	size_t name_len;
2018 	const char *name_fmt;
2019 	static const char * const ds4_name_str[] = { "red", "green", "blue",
2020 						  "global" };
2021 	u8 max_brightness[MAX_LEDS] = { [0 ... (MAX_LEDS - 1)] = 1 };
2022 	u8 use_hw_blink[MAX_LEDS] = { 0 };
2023 
2024 	BUG_ON(!(sc->quirks & SONY_LED_SUPPORT));
2025 
2026 	if (sc->quirks & BUZZ_CONTROLLER) {
2027 		sc->led_count = 4;
2028 		use_ds4_names = 0;
2029 		name_len = strlen("::buzz#");
2030 		name_fmt = "%s::buzz%d";
2031 		/* Validate expected report characteristics. */
2032 		if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 0, 0, 7))
2033 			return -ENODEV;
2034 	} else if (sc->quirks & DUALSHOCK4_CONTROLLER) {
2035 		dualshock4_set_leds_from_id(sc);
2036 		sc->led_state[3] = 1;
2037 		sc->led_count = 4;
2038 		memset(max_brightness, 255, 3);
2039 		use_hw_blink[3] = 1;
2040 		use_ds4_names = 1;
2041 		name_len = 0;
2042 		name_fmt = "%s:%s";
2043 	} else if (sc->quirks & MOTION_CONTROLLER) {
2044 		sc->led_count = 3;
2045 		memset(max_brightness, 255, 3);
2046 		use_ds4_names = 1;
2047 		name_len = 0;
2048 		name_fmt = "%s:%s";
2049 	} else if (sc->quirks & NAVIGATION_CONTROLLER) {
2050 		static const u8 navigation_leds[4] = {0x01, 0x00, 0x00, 0x00};
2051 
2052 		memcpy(sc->led_state, navigation_leds, sizeof(navigation_leds));
2053 		sc->led_count = 1;
2054 		memset(use_hw_blink, 1, 4);
2055 		use_ds4_names = 0;
2056 		name_len = strlen("::sony#");
2057 		name_fmt = "%s::sony%d";
2058 	} else {
2059 		sixaxis_set_leds_from_id(sc);
2060 		sc->led_count = 4;
2061 		memset(use_hw_blink, 1, 4);
2062 		use_ds4_names = 0;
2063 		name_len = strlen("::sony#");
2064 		name_fmt = "%s::sony%d";
2065 	}
2066 
2067 	/*
2068 	 * Clear LEDs as we have no way of reading their initial state. This is
2069 	 * only relevant if the driver is loaded after somebody actively set the
2070 	 * LEDs to on
2071 	 */
2072 	sony_set_leds(sc);
2073 
2074 	name_sz = strlen(dev_name(&hdev->dev)) + name_len + 1;
2075 
2076 	for (n = 0; n < sc->led_count; n++) {
2077 
2078 		if (use_ds4_names)
2079 			name_sz = strlen(dev_name(&hdev->dev)) + strlen(ds4_name_str[n]) + 2;
2080 
2081 		led = kzalloc(sizeof(struct led_classdev) + name_sz, GFP_KERNEL);
2082 		if (!led) {
2083 			hid_err(hdev, "Couldn't allocate memory for LED %d\n", n);
2084 			ret = -ENOMEM;
2085 			goto error_leds;
2086 		}
2087 
2088 		name = (void *)(&led[1]);
2089 		if (use_ds4_names)
2090 			snprintf(name, name_sz, name_fmt, dev_name(&hdev->dev),
2091 			ds4_name_str[n]);
2092 		else
2093 			snprintf(name, name_sz, name_fmt, dev_name(&hdev->dev), n + 1);
2094 		led->name = name;
2095 		led->brightness = sc->led_state[n];
2096 		led->max_brightness = max_brightness[n];
2097 		led->flags = LED_CORE_SUSPENDRESUME;
2098 		led->brightness_get = sony_led_get_brightness;
2099 		led->brightness_set = sony_led_set_brightness;
2100 
2101 		if (use_hw_blink[n])
2102 			led->blink_set = sony_led_blink_set;
2103 
2104 		sc->leds[n] = led;
2105 
2106 		ret = led_classdev_register(&hdev->dev, led);
2107 		if (ret) {
2108 			hid_err(hdev, "Failed to register LED %d\n", n);
2109 			sc->leds[n] = NULL;
2110 			kfree(led);
2111 			goto error_leds;
2112 		}
2113 	}
2114 
2115 	return ret;
2116 
2117 error_leds:
2118 	sony_leds_remove(sc);
2119 
2120 	return ret;
2121 }
2122 
2123 static void sixaxis_send_output_report(struct sony_sc *sc)
2124 {
2125 	static const union sixaxis_output_report_01 default_report = {
2126 		.buf = {
2127 			0x01,
2128 			0x01, 0xff, 0x00, 0xff, 0x00,
2129 			0x00, 0x00, 0x00, 0x00, 0x00,
2130 			0xff, 0x27, 0x10, 0x00, 0x32,
2131 			0xff, 0x27, 0x10, 0x00, 0x32,
2132 			0xff, 0x27, 0x10, 0x00, 0x32,
2133 			0xff, 0x27, 0x10, 0x00, 0x32,
2134 			0x00, 0x00, 0x00, 0x00, 0x00
2135 		}
2136 	};
2137 	struct sixaxis_output_report *report =
2138 		(struct sixaxis_output_report *)sc->output_report_dmabuf;
2139 	int n;
2140 
2141 	/* Initialize the report with default values */
2142 	memcpy(report, &default_report, sizeof(struct sixaxis_output_report));
2143 
2144 #ifdef CONFIG_SONY_FF
2145 	report->rumble.right_motor_on = sc->right ? 1 : 0;
2146 	report->rumble.left_motor_force = sc->left;
2147 #endif
2148 
2149 	report->leds_bitmap |= sc->led_state[0] << 1;
2150 	report->leds_bitmap |= sc->led_state[1] << 2;
2151 	report->leds_bitmap |= sc->led_state[2] << 3;
2152 	report->leds_bitmap |= sc->led_state[3] << 4;
2153 
2154 	/* Set flag for all leds off, required for 3rd party INTEC controller */
2155 	if ((report->leds_bitmap & 0x1E) == 0)
2156 		report->leds_bitmap |= 0x20;
2157 
2158 	/*
2159 	 * The LEDs in the report are indexed in reverse order to their
2160 	 * corresponding light on the controller.
2161 	 * Index 0 = LED 4, index 1 = LED 3, etc...
2162 	 *
2163 	 * In the case of both delay values being zero (blinking disabled) the
2164 	 * default report values should be used or the controller LED will be
2165 	 * always off.
2166 	 */
2167 	for (n = 0; n < 4; n++) {
2168 		if (sc->led_delay_on[n] || sc->led_delay_off[n]) {
2169 			report->led[3 - n].duty_off = sc->led_delay_off[n];
2170 			report->led[3 - n].duty_on = sc->led_delay_on[n];
2171 		}
2172 	}
2173 
2174 	hid_hw_raw_request(sc->hdev, report->report_id, (u8 *)report,
2175 			sizeof(struct sixaxis_output_report),
2176 			HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
2177 }
2178 
2179 static void dualshock4_send_output_report(struct sony_sc *sc)
2180 {
2181 	struct hid_device *hdev = sc->hdev;
2182 	u8 *buf = sc->output_report_dmabuf;
2183 	int offset;
2184 
2185 	/*
2186 	 * NOTE: The lower 6 bits of buf[1] field of the Bluetooth report
2187 	 * control the interval at which Dualshock 4 reports data:
2188 	 * 0x00 - 1ms
2189 	 * 0x01 - 1ms
2190 	 * 0x02 - 2ms
2191 	 * 0x3E - 62ms
2192 	 * 0x3F - disabled
2193 	 */
2194 	if (sc->quirks & (DUALSHOCK4_CONTROLLER_USB | DUALSHOCK4_DONGLE)) {
2195 		memset(buf, 0, DS4_OUTPUT_REPORT_0x05_SIZE);
2196 		buf[0] = 0x05;
2197 		buf[1] = 0x07; /* blink + LEDs + motor */
2198 		offset = 4;
2199 	} else {
2200 		memset(buf, 0, DS4_OUTPUT_REPORT_0x11_SIZE);
2201 		buf[0] = 0x11;
2202 		buf[1] = 0xC0 /* HID + CRC */ | sc->ds4_bt_poll_interval;
2203 		buf[3] = 0x07; /* blink + LEDs + motor */
2204 		offset = 6;
2205 	}
2206 
2207 #ifdef CONFIG_SONY_FF
2208 	buf[offset++] = sc->right;
2209 	buf[offset++] = sc->left;
2210 #else
2211 	offset += 2;
2212 #endif
2213 
2214 	/* LED 3 is the global control */
2215 	if (sc->led_state[3]) {
2216 		buf[offset++] = sc->led_state[0];
2217 		buf[offset++] = sc->led_state[1];
2218 		buf[offset++] = sc->led_state[2];
2219 	} else {
2220 		offset += 3;
2221 	}
2222 
2223 	/* If both delay values are zero the DualShock 4 disables blinking. */
2224 	buf[offset++] = sc->led_delay_on[3];
2225 	buf[offset++] = sc->led_delay_off[3];
2226 
2227 	if (sc->quirks & (DUALSHOCK4_CONTROLLER_USB | DUALSHOCK4_DONGLE))
2228 		hid_hw_output_report(hdev, buf, DS4_OUTPUT_REPORT_0x05_SIZE);
2229 	else {
2230 		/* CRC generation */
2231 		u8 bthdr = 0xA2;
2232 		u32 crc;
2233 
2234 		crc = crc32_le(0xFFFFFFFF, &bthdr, 1);
2235 		crc = ~crc32_le(crc, buf, DS4_OUTPUT_REPORT_0x11_SIZE-4);
2236 		put_unaligned_le32(crc, &buf[74]);
2237 		hid_hw_output_report(hdev, buf, DS4_OUTPUT_REPORT_0x11_SIZE);
2238 	}
2239 }
2240 
2241 static void motion_send_output_report(struct sony_sc *sc)
2242 {
2243 	struct hid_device *hdev = sc->hdev;
2244 	struct motion_output_report_02 *report =
2245 		(struct motion_output_report_02 *)sc->output_report_dmabuf;
2246 
2247 	memset(report, 0, MOTION_REPORT_0x02_SIZE);
2248 
2249 	report->type = 0x02; /* set leds */
2250 	report->r = sc->led_state[0];
2251 	report->g = sc->led_state[1];
2252 	report->b = sc->led_state[2];
2253 
2254 #ifdef CONFIG_SONY_FF
2255 	report->rumble = max(sc->right, sc->left);
2256 #endif
2257 
2258 	hid_hw_output_report(hdev, (u8 *)report, MOTION_REPORT_0x02_SIZE);
2259 }
2260 
2261 static inline void sony_send_output_report(struct sony_sc *sc)
2262 {
2263 	if (sc->send_output_report)
2264 		sc->send_output_report(sc);
2265 }
2266 
2267 static void sony_state_worker(struct work_struct *work)
2268 {
2269 	struct sony_sc *sc = container_of(work, struct sony_sc, state_worker);
2270 
2271 	sc->send_output_report(sc);
2272 }
2273 
2274 static int sony_allocate_output_report(struct sony_sc *sc)
2275 {
2276 	if ((sc->quirks & SIXAXIS_CONTROLLER) ||
2277 			(sc->quirks & NAVIGATION_CONTROLLER))
2278 		sc->output_report_dmabuf =
2279 			kmalloc(sizeof(union sixaxis_output_report_01),
2280 				GFP_KERNEL);
2281 	else if (sc->quirks & DUALSHOCK4_CONTROLLER_BT)
2282 		sc->output_report_dmabuf = kmalloc(DS4_OUTPUT_REPORT_0x11_SIZE,
2283 						GFP_KERNEL);
2284 	else if (sc->quirks & (DUALSHOCK4_CONTROLLER_USB | DUALSHOCK4_DONGLE))
2285 		sc->output_report_dmabuf = kmalloc(DS4_OUTPUT_REPORT_0x05_SIZE,
2286 						GFP_KERNEL);
2287 	else if (sc->quirks & MOTION_CONTROLLER)
2288 		sc->output_report_dmabuf = kmalloc(MOTION_REPORT_0x02_SIZE,
2289 						GFP_KERNEL);
2290 	else
2291 		return 0;
2292 
2293 	if (!sc->output_report_dmabuf)
2294 		return -ENOMEM;
2295 
2296 	return 0;
2297 }
2298 
2299 #ifdef CONFIG_SONY_FF
2300 static int sony_play_effect(struct input_dev *dev, void *data,
2301 			    struct ff_effect *effect)
2302 {
2303 	struct hid_device *hid = input_get_drvdata(dev);
2304 	struct sony_sc *sc = hid_get_drvdata(hid);
2305 
2306 	if (effect->type != FF_RUMBLE)
2307 		return 0;
2308 
2309 	sc->left = effect->u.rumble.strong_magnitude / 256;
2310 	sc->right = effect->u.rumble.weak_magnitude / 256;
2311 
2312 	sony_schedule_work(sc, SONY_WORKER_STATE);
2313 	return 0;
2314 }
2315 
2316 static int sony_init_ff(struct sony_sc *sc)
2317 {
2318 	struct hid_input *hidinput = list_entry(sc->hdev->inputs.next,
2319 						struct hid_input, list);
2320 	struct input_dev *input_dev = hidinput->input;
2321 
2322 	input_set_capability(input_dev, EV_FF, FF_RUMBLE);
2323 	return input_ff_create_memless(input_dev, NULL, sony_play_effect);
2324 }
2325 
2326 #else
2327 static int sony_init_ff(struct sony_sc *sc)
2328 {
2329 	return 0;
2330 }
2331 
2332 #endif
2333 
2334 static int sony_battery_get_property(struct power_supply *psy,
2335 				     enum power_supply_property psp,
2336 				     union power_supply_propval *val)
2337 {
2338 	struct sony_sc *sc = power_supply_get_drvdata(psy);
2339 	unsigned long flags;
2340 	int ret = 0;
2341 	u8 battery_charging, battery_capacity, cable_state;
2342 
2343 	spin_lock_irqsave(&sc->lock, flags);
2344 	battery_charging = sc->battery_charging;
2345 	battery_capacity = sc->battery_capacity;
2346 	cable_state = sc->cable_state;
2347 	spin_unlock_irqrestore(&sc->lock, flags);
2348 
2349 	switch (psp) {
2350 	case POWER_SUPPLY_PROP_PRESENT:
2351 		val->intval = 1;
2352 		break;
2353 	case POWER_SUPPLY_PROP_SCOPE:
2354 		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
2355 		break;
2356 	case POWER_SUPPLY_PROP_CAPACITY:
2357 		val->intval = battery_capacity;
2358 		break;
2359 	case POWER_SUPPLY_PROP_STATUS:
2360 		if (battery_charging)
2361 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
2362 		else
2363 			if (battery_capacity == 100 && cable_state)
2364 				val->intval = POWER_SUPPLY_STATUS_FULL;
2365 			else
2366 				val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
2367 		break;
2368 	default:
2369 		ret = -EINVAL;
2370 		break;
2371 	}
2372 	return ret;
2373 }
2374 
2375 static int sony_battery_probe(struct sony_sc *sc, int append_dev_id)
2376 {
2377 	const char *battery_str_fmt = append_dev_id ?
2378 		"sony_controller_battery_%pMR_%i" :
2379 		"sony_controller_battery_%pMR";
2380 	struct power_supply_config psy_cfg = { .drv_data = sc, };
2381 	struct hid_device *hdev = sc->hdev;
2382 	int ret;
2383 
2384 	/*
2385 	 * Set the default battery level to 100% to avoid low battery warnings
2386 	 * if the battery is polled before the first device report is received.
2387 	 */
2388 	sc->battery_capacity = 100;
2389 
2390 	sc->battery_desc.properties = sony_battery_props;
2391 	sc->battery_desc.num_properties = ARRAY_SIZE(sony_battery_props);
2392 	sc->battery_desc.get_property = sony_battery_get_property;
2393 	sc->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
2394 	sc->battery_desc.use_for_apm = 0;
2395 	sc->battery_desc.name = kasprintf(GFP_KERNEL, battery_str_fmt,
2396 					  sc->mac_address, sc->device_id);
2397 	if (!sc->battery_desc.name)
2398 		return -ENOMEM;
2399 
2400 	sc->battery = power_supply_register(&hdev->dev, &sc->battery_desc,
2401 					    &psy_cfg);
2402 	if (IS_ERR(sc->battery)) {
2403 		ret = PTR_ERR(sc->battery);
2404 		hid_err(hdev, "Unable to register battery device\n");
2405 		goto err_free;
2406 	}
2407 
2408 	power_supply_powers(sc->battery, &hdev->dev);
2409 	return 0;
2410 
2411 err_free:
2412 	kfree(sc->battery_desc.name);
2413 	sc->battery_desc.name = NULL;
2414 	return ret;
2415 }
2416 
2417 static void sony_battery_remove(struct sony_sc *sc)
2418 {
2419 	if (!sc->battery_desc.name)
2420 		return;
2421 
2422 	power_supply_unregister(sc->battery);
2423 	kfree(sc->battery_desc.name);
2424 	sc->battery_desc.name = NULL;
2425 }
2426 
2427 /*
2428  * If a controller is plugged in via USB while already connected via Bluetooth
2429  * it will show up as two devices. A global list of connected controllers and
2430  * their MAC addresses is maintained to ensure that a device is only connected
2431  * once.
2432  *
2433  * Some USB-only devices masquerade as Sixaxis controllers and all have the
2434  * same dummy Bluetooth address, so a comparison of the connection type is
2435  * required.  Devices are only rejected in the case where two devices have
2436  * matching Bluetooth addresses on different bus types.
2437  */
2438 static inline int sony_compare_connection_type(struct sony_sc *sc0,
2439 						struct sony_sc *sc1)
2440 {
2441 	const int sc0_not_bt = !(sc0->quirks & SONY_BT_DEVICE);
2442 	const int sc1_not_bt = !(sc1->quirks & SONY_BT_DEVICE);
2443 
2444 	return sc0_not_bt == sc1_not_bt;
2445 }
2446 
2447 static int sony_check_add_dev_list(struct sony_sc *sc)
2448 {
2449 	struct sony_sc *entry;
2450 	unsigned long flags;
2451 	int ret;
2452 
2453 	spin_lock_irqsave(&sony_dev_list_lock, flags);
2454 
2455 	list_for_each_entry(entry, &sony_device_list, list_node) {
2456 		ret = memcmp(sc->mac_address, entry->mac_address,
2457 				sizeof(sc->mac_address));
2458 		if (!ret) {
2459 			if (sony_compare_connection_type(sc, entry)) {
2460 				ret = 1;
2461 			} else {
2462 				ret = -EEXIST;
2463 				hid_info(sc->hdev,
2464 				"controller with MAC address %pMR already connected\n",
2465 				sc->mac_address);
2466 			}
2467 			goto unlock;
2468 		}
2469 	}
2470 
2471 	ret = 0;
2472 	list_add(&(sc->list_node), &sony_device_list);
2473 
2474 unlock:
2475 	spin_unlock_irqrestore(&sony_dev_list_lock, flags);
2476 	return ret;
2477 }
2478 
2479 static void sony_remove_dev_list(struct sony_sc *sc)
2480 {
2481 	unsigned long flags;
2482 
2483 	if (sc->list_node.next) {
2484 		spin_lock_irqsave(&sony_dev_list_lock, flags);
2485 		list_del(&(sc->list_node));
2486 		spin_unlock_irqrestore(&sony_dev_list_lock, flags);
2487 	}
2488 }
2489 
2490 static int sony_get_bt_devaddr(struct sony_sc *sc)
2491 {
2492 	int ret;
2493 
2494 	/* HIDP stores the device MAC address as a string in the uniq field. */
2495 	ret = strlen(sc->hdev->uniq);
2496 	if (ret != 17)
2497 		return -EINVAL;
2498 
2499 	ret = sscanf(sc->hdev->uniq,
2500 		"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
2501 		&sc->mac_address[5], &sc->mac_address[4], &sc->mac_address[3],
2502 		&sc->mac_address[2], &sc->mac_address[1], &sc->mac_address[0]);
2503 
2504 	if (ret != 6)
2505 		return -EINVAL;
2506 
2507 	return 0;
2508 }
2509 
2510 static int sony_check_add(struct sony_sc *sc)
2511 {
2512 	u8 *buf = NULL;
2513 	int n, ret;
2514 
2515 	if ((sc->quirks & DUALSHOCK4_CONTROLLER_BT) ||
2516 	    (sc->quirks & MOTION_CONTROLLER_BT) ||
2517 	    (sc->quirks & NAVIGATION_CONTROLLER_BT) ||
2518 	    (sc->quirks & SIXAXIS_CONTROLLER_BT)) {
2519 		/*
2520 		 * sony_get_bt_devaddr() attempts to parse the Bluetooth MAC
2521 		 * address from the uniq string where HIDP stores it.
2522 		 * As uniq cannot be guaranteed to be a MAC address in all cases
2523 		 * a failure of this function should not prevent the connection.
2524 		 */
2525 		if (sony_get_bt_devaddr(sc) < 0) {
2526 			hid_warn(sc->hdev, "UNIQ does not contain a MAC address; duplicate check skipped\n");
2527 			return 0;
2528 		}
2529 	} else if (sc->quirks & (DUALSHOCK4_CONTROLLER_USB | DUALSHOCK4_DONGLE)) {
2530 		buf = kmalloc(DS4_FEATURE_REPORT_0x81_SIZE, GFP_KERNEL);
2531 		if (!buf)
2532 			return -ENOMEM;
2533 
2534 		/*
2535 		 * The MAC address of a DS4 controller connected via USB can be
2536 		 * retrieved with feature report 0x81. The address begins at
2537 		 * offset 1.
2538 		 */
2539 		ret = hid_hw_raw_request(sc->hdev, 0x81, buf,
2540 				DS4_FEATURE_REPORT_0x81_SIZE, HID_FEATURE_REPORT,
2541 				HID_REQ_GET_REPORT);
2542 
2543 		if (ret != DS4_FEATURE_REPORT_0x81_SIZE) {
2544 			hid_err(sc->hdev, "failed to retrieve feature report 0x81 with the DualShock 4 MAC address\n");
2545 			ret = ret < 0 ? ret : -EINVAL;
2546 			goto out_free;
2547 		}
2548 
2549 		memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address));
2550 
2551 		snprintf(sc->hdev->uniq, sizeof(sc->hdev->uniq),
2552 			 "%pMR", sc->mac_address);
2553 	} else if ((sc->quirks & SIXAXIS_CONTROLLER_USB) ||
2554 			(sc->quirks & NAVIGATION_CONTROLLER_USB)) {
2555 		buf = kmalloc(SIXAXIS_REPORT_0xF2_SIZE, GFP_KERNEL);
2556 		if (!buf)
2557 			return -ENOMEM;
2558 
2559 		/*
2560 		 * The MAC address of a Sixaxis controller connected via USB can
2561 		 * be retrieved with feature report 0xf2. The address begins at
2562 		 * offset 4.
2563 		 */
2564 		ret = hid_hw_raw_request(sc->hdev, 0xf2, buf,
2565 				SIXAXIS_REPORT_0xF2_SIZE, HID_FEATURE_REPORT,
2566 				HID_REQ_GET_REPORT);
2567 
2568 		if (ret != SIXAXIS_REPORT_0xF2_SIZE) {
2569 			hid_err(sc->hdev, "failed to retrieve feature report 0xf2 with the Sixaxis MAC address\n");
2570 			ret = ret < 0 ? ret : -EINVAL;
2571 			goto out_free;
2572 		}
2573 
2574 		/*
2575 		 * The Sixaxis device MAC in the report is big-endian and must
2576 		 * be byte-swapped.
2577 		 */
2578 		for (n = 0; n < 6; n++)
2579 			sc->mac_address[5-n] = buf[4+n];
2580 
2581 		snprintf(sc->hdev->uniq, sizeof(sc->hdev->uniq),
2582 			 "%pMR", sc->mac_address);
2583 	} else {
2584 		return 0;
2585 	}
2586 
2587 	ret = sony_check_add_dev_list(sc);
2588 
2589 out_free:
2590 
2591 	kfree(buf);
2592 
2593 	return ret;
2594 }
2595 
2596 static int sony_set_device_id(struct sony_sc *sc)
2597 {
2598 	int ret;
2599 
2600 	/*
2601 	 * Only DualShock 4 or Sixaxis controllers get an id.
2602 	 * All others are set to -1.
2603 	 */
2604 	if ((sc->quirks & SIXAXIS_CONTROLLER) ||
2605 	    (sc->quirks & DUALSHOCK4_CONTROLLER)) {
2606 		ret = ida_simple_get(&sony_device_id_allocator, 0, 0,
2607 					GFP_KERNEL);
2608 		if (ret < 0) {
2609 			sc->device_id = -1;
2610 			return ret;
2611 		}
2612 		sc->device_id = ret;
2613 	} else {
2614 		sc->device_id = -1;
2615 	}
2616 
2617 	return 0;
2618 }
2619 
2620 static void sony_release_device_id(struct sony_sc *sc)
2621 {
2622 	if (sc->device_id >= 0) {
2623 		ida_simple_remove(&sony_device_id_allocator, sc->device_id);
2624 		sc->device_id = -1;
2625 	}
2626 }
2627 
2628 static inline void sony_init_output_report(struct sony_sc *sc,
2629 				void (*send_output_report)(struct sony_sc *))
2630 {
2631 	sc->send_output_report = send_output_report;
2632 
2633 	if (!sc->state_worker_initialized)
2634 		INIT_WORK(&sc->state_worker, sony_state_worker);
2635 
2636 	sc->state_worker_initialized = 1;
2637 }
2638 
2639 static inline void sony_cancel_work_sync(struct sony_sc *sc)
2640 {
2641 	if (sc->hotplug_worker_initialized)
2642 		cancel_work_sync(&sc->hotplug_worker);
2643 	if (sc->state_worker_initialized)
2644 		cancel_work_sync(&sc->state_worker);
2645 }
2646 
2647 
2648 static int sony_input_configured(struct hid_device *hdev,
2649 					struct hid_input *hidinput)
2650 {
2651 	struct sony_sc *sc = hid_get_drvdata(hdev);
2652 	int append_dev_id;
2653 	int ret;
2654 
2655 	ret = sony_set_device_id(sc);
2656 	if (ret < 0) {
2657 		hid_err(hdev, "failed to allocate the device id\n");
2658 		goto err_stop;
2659 	}
2660 
2661 	ret = append_dev_id = sony_check_add(sc);
2662 	if (ret < 0)
2663 		goto err_stop;
2664 
2665 	ret = sony_allocate_output_report(sc);
2666 	if (ret < 0) {
2667 		hid_err(hdev, "failed to allocate the output report buffer\n");
2668 		goto err_stop;
2669 	}
2670 
2671 	if (sc->quirks & NAVIGATION_CONTROLLER_USB) {
2672 		/*
2673 		 * The Sony Sixaxis does not handle HID Output Reports on the
2674 		 * Interrupt EP like it could, so we need to force HID Output
2675 		 * Reports to use HID_REQ_SET_REPORT on the Control EP.
2676 		 *
2677 		 * There is also another issue about HID Output Reports via USB,
2678 		 * the Sixaxis does not want the report_id as part of the data
2679 		 * packet, so we have to discard buf[0] when sending the actual
2680 		 * control message, even for numbered reports, humpf!
2681 		 *
2682 		 * Additionally, the Sixaxis on USB isn't properly initialized
2683 		 * until the PS logo button is pressed and as such won't retain
2684 		 * any state set by an output report, so the initial
2685 		 * configuration report is deferred until the first input
2686 		 * report arrives.
2687 		 */
2688 		hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;
2689 		hdev->quirks |= HID_QUIRK_SKIP_OUTPUT_REPORT_ID;
2690 		sc->defer_initialization = 1;
2691 
2692 		ret = sixaxis_set_operational_usb(hdev);
2693 		if (ret < 0) {
2694 			hid_err(hdev, "Failed to set controller into operational mode\n");
2695 			goto err_stop;
2696 		}
2697 
2698 		sony_init_output_report(sc, sixaxis_send_output_report);
2699 	} else if (sc->quirks & NAVIGATION_CONTROLLER_BT) {
2700 		/*
2701 		 * The Navigation controller wants output reports sent on the ctrl
2702 		 * endpoint when connected via Bluetooth.
2703 		 */
2704 		hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;
2705 
2706 		ret = sixaxis_set_operational_bt(hdev);
2707 		if (ret < 0) {
2708 			hid_err(hdev, "Failed to set controller into operational mode\n");
2709 			goto err_stop;
2710 		}
2711 
2712 		sony_init_output_report(sc, sixaxis_send_output_report);
2713 	} else if (sc->quirks & SIXAXIS_CONTROLLER_USB) {
2714 		/*
2715 		 * The Sony Sixaxis does not handle HID Output Reports on the
2716 		 * Interrupt EP and the device only becomes active when the
2717 		 * PS button is pressed. See comment for Navigation controller
2718 		 * above for more details.
2719 		 */
2720 		hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;
2721 		hdev->quirks |= HID_QUIRK_SKIP_OUTPUT_REPORT_ID;
2722 		sc->defer_initialization = 1;
2723 
2724 		ret = sixaxis_set_operational_usb(hdev);
2725 		if (ret < 0) {
2726 			hid_err(hdev, "Failed to set controller into operational mode\n");
2727 			goto err_stop;
2728 		}
2729 
2730 		ret = sony_register_sensors(sc);
2731 		if (ret) {
2732 			hid_err(sc->hdev,
2733 			"Unable to initialize motion sensors: %d\n", ret);
2734 			goto err_stop;
2735 		}
2736 
2737 		sony_init_output_report(sc, sixaxis_send_output_report);
2738 	} else if (sc->quirks & SIXAXIS_CONTROLLER_BT) {
2739 		/*
2740 		 * The Sixaxis wants output reports sent on the ctrl endpoint
2741 		 * when connected via Bluetooth.
2742 		 */
2743 		hdev->quirks |= HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP;
2744 
2745 		ret = sixaxis_set_operational_bt(hdev);
2746 		if (ret < 0) {
2747 			hid_err(hdev, "Failed to set controller into operational mode\n");
2748 			goto err_stop;
2749 		}
2750 
2751 		ret = sony_register_sensors(sc);
2752 		if (ret) {
2753 			hid_err(sc->hdev,
2754 			"Unable to initialize motion sensors: %d\n", ret);
2755 			goto err_stop;
2756 		}
2757 
2758 		sony_init_output_report(sc, sixaxis_send_output_report);
2759 	} else if (sc->quirks & DUALSHOCK4_CONTROLLER) {
2760 		ret = dualshock4_get_calibration_data(sc);
2761 		if (ret < 0) {
2762 			hid_err(hdev, "Failed to get calibration data from Dualshock 4\n");
2763 			goto err_stop;
2764 		}
2765 
2766 		ret = dualshock4_get_version_info(sc);
2767 		if (ret < 0) {
2768 			hid_err(sc->hdev, "Failed to get version data from Dualshock 4\n");
2769 			goto err_stop;
2770 		}
2771 
2772 		ret = device_create_file(&sc->hdev->dev, &dev_attr_firmware_version);
2773 		if (ret) {
2774 			/* Make zero for cleanup reasons of sysfs entries. */
2775 			sc->fw_version = 0;
2776 			sc->hw_version = 0;
2777 			hid_err(sc->hdev, "can't create sysfs firmware_version attribute err: %d\n", ret);
2778 			goto err_stop;
2779 		}
2780 
2781 		ret = device_create_file(&sc->hdev->dev, &dev_attr_hardware_version);
2782 		if (ret) {
2783 			sc->hw_version = 0;
2784 			hid_err(sc->hdev, "can't create sysfs hardware_version attribute err: %d\n", ret);
2785 			goto err_stop;
2786 		}
2787 
2788 		/*
2789 		 * The Dualshock 4 touchpad supports 2 touches and has a
2790 		 * resolution of 1920x942 (44.86 dots/mm).
2791 		 */
2792 		ret = sony_register_touchpad(sc, 2, 1920, 942, 0, 0, 0);
2793 		if (ret) {
2794 			hid_err(sc->hdev,
2795 			"Unable to initialize multi-touch slots: %d\n",
2796 			ret);
2797 			goto err_stop;
2798 		}
2799 
2800 		ret = sony_register_sensors(sc);
2801 		if (ret) {
2802 			hid_err(sc->hdev,
2803 			"Unable to initialize motion sensors: %d\n", ret);
2804 			goto err_stop;
2805 		}
2806 
2807 		if (sc->quirks & DUALSHOCK4_CONTROLLER_BT) {
2808 			sc->ds4_bt_poll_interval = DS4_BT_DEFAULT_POLL_INTERVAL_MS;
2809 			ret = device_create_file(&sc->hdev->dev, &dev_attr_bt_poll_interval);
2810 			if (ret)
2811 				hid_warn(sc->hdev,
2812 				 "can't create sysfs bt_poll_interval attribute err: %d\n",
2813 				 ret);
2814 		}
2815 
2816 		if (sc->quirks & DUALSHOCK4_DONGLE) {
2817 			INIT_WORK(&sc->hotplug_worker, dualshock4_calibration_work);
2818 			sc->hotplug_worker_initialized = 1;
2819 			sc->ds4_dongle_state = DONGLE_DISCONNECTED;
2820 		}
2821 
2822 		sony_init_output_report(sc, dualshock4_send_output_report);
2823 	} else if (sc->quirks & NSG_MRXU_REMOTE) {
2824 		/*
2825 		 * The NSG-MRxU touchpad supports 2 touches and has a
2826 		 * resolution of 1667x1868
2827 		 */
2828 		ret = sony_register_touchpad(sc, 2,
2829 			NSG_MRXU_MAX_X, NSG_MRXU_MAX_Y, 15, 15, 1);
2830 		if (ret) {
2831 			hid_err(sc->hdev,
2832 			"Unable to initialize multi-touch slots: %d\n",
2833 			ret);
2834 			goto err_stop;
2835 		}
2836 
2837 	} else if (sc->quirks & MOTION_CONTROLLER) {
2838 		sony_init_output_report(sc, motion_send_output_report);
2839 	} else {
2840 		ret = 0;
2841 	}
2842 
2843 	if (sc->quirks & SONY_LED_SUPPORT) {
2844 		ret = sony_leds_init(sc);
2845 		if (ret < 0)
2846 			goto err_stop;
2847 	}
2848 
2849 	if (sc->quirks & SONY_BATTERY_SUPPORT) {
2850 		ret = sony_battery_probe(sc, append_dev_id);
2851 		if (ret < 0)
2852 			goto err_stop;
2853 
2854 		/* Open the device to receive reports with battery info */
2855 		ret = hid_hw_open(hdev);
2856 		if (ret < 0) {
2857 			hid_err(hdev, "hw open failed\n");
2858 			goto err_stop;
2859 		}
2860 	}
2861 
2862 	if (sc->quirks & SONY_FF_SUPPORT) {
2863 		ret = sony_init_ff(sc);
2864 		if (ret < 0)
2865 			goto err_close;
2866 	}
2867 
2868 	return 0;
2869 err_close:
2870 	hid_hw_close(hdev);
2871 err_stop:
2872 	/* Piggy back on the default ds4_bt_ poll_interval to determine
2873 	 * if we need to remove the file as we don't know for sure if we
2874 	 * executed that logic.
2875 	 */
2876 	if (sc->ds4_bt_poll_interval)
2877 		device_remove_file(&sc->hdev->dev, &dev_attr_bt_poll_interval);
2878 	if (sc->fw_version)
2879 		device_remove_file(&sc->hdev->dev, &dev_attr_firmware_version);
2880 	if (sc->hw_version)
2881 		device_remove_file(&sc->hdev->dev, &dev_attr_hardware_version);
2882 	if (sc->quirks & SONY_LED_SUPPORT)
2883 		sony_leds_remove(sc);
2884 	if (sc->quirks & SONY_BATTERY_SUPPORT)
2885 		sony_battery_remove(sc);
2886 	if (sc->touchpad)
2887 		sony_unregister_touchpad(sc);
2888 	if (sc->sensor_dev)
2889 		sony_unregister_sensors(sc);
2890 	sony_cancel_work_sync(sc);
2891 	kfree(sc->output_report_dmabuf);
2892 	sony_remove_dev_list(sc);
2893 	sony_release_device_id(sc);
2894 	hid_hw_stop(hdev);
2895 	return ret;
2896 }
2897 
2898 static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
2899 {
2900 	int ret;
2901 	unsigned long quirks = id->driver_data;
2902 	struct sony_sc *sc;
2903 	unsigned int connect_mask = HID_CONNECT_DEFAULT;
2904 
2905 	if (!strcmp(hdev->name, "FutureMax Dance Mat"))
2906 		quirks |= FUTUREMAX_DANCE_MAT;
2907 
2908 	sc = devm_kzalloc(&hdev->dev, sizeof(*sc), GFP_KERNEL);
2909 	if (sc == NULL) {
2910 		hid_err(hdev, "can't alloc sony descriptor\n");
2911 		return -ENOMEM;
2912 	}
2913 
2914 	spin_lock_init(&sc->lock);
2915 
2916 	sc->quirks = quirks;
2917 	hid_set_drvdata(hdev, sc);
2918 	sc->hdev = hdev;
2919 
2920 	ret = hid_parse(hdev);
2921 	if (ret) {
2922 		hid_err(hdev, "parse failed\n");
2923 		return ret;
2924 	}
2925 
2926 	if (sc->quirks & VAIO_RDESC_CONSTANT)
2927 		connect_mask |= HID_CONNECT_HIDDEV_FORCE;
2928 	else if (sc->quirks & SIXAXIS_CONTROLLER)
2929 		connect_mask |= HID_CONNECT_HIDDEV_FORCE;
2930 
2931 	/* Patch the hw version on DS3/4 compatible devices, so applications can
2932 	 * distinguish between the default HID mappings and the mappings defined
2933 	 * by the Linux game controller spec. This is important for the SDL2
2934 	 * library, which has a game controller database, which uses device ids
2935 	 * in combination with version as a key.
2936 	 */
2937 	if (sc->quirks & (SIXAXIS_CONTROLLER | DUALSHOCK4_CONTROLLER))
2938 		hdev->version |= 0x8000;
2939 
2940 	ret = hid_hw_start(hdev, connect_mask);
2941 	if (ret) {
2942 		hid_err(hdev, "hw start failed\n");
2943 		return ret;
2944 	}
2945 
2946 	/* sony_input_configured can fail, but this doesn't result
2947 	 * in hid_hw_start failures (intended). Check whether
2948 	 * the HID layer claimed the device else fail.
2949 	 * We don't know the actual reason for the failure, most
2950 	 * likely it is due to EEXIST in case of double connection
2951 	 * of USB and Bluetooth, but could have been due to ENOMEM
2952 	 * or other reasons as well.
2953 	 */
2954 	if (!(hdev->claimed & HID_CLAIMED_INPUT)) {
2955 		hid_err(hdev, "failed to claim input\n");
2956 		return -ENODEV;
2957 	}
2958 
2959 	return ret;
2960 }
2961 
2962 static void sony_remove(struct hid_device *hdev)
2963 {
2964 	struct sony_sc *sc = hid_get_drvdata(hdev);
2965 
2966 	hid_hw_close(hdev);
2967 
2968 	if (sc->quirks & SONY_LED_SUPPORT)
2969 		sony_leds_remove(sc);
2970 
2971 	if (sc->quirks & SONY_BATTERY_SUPPORT)
2972 		sony_battery_remove(sc);
2973 
2974 	if (sc->touchpad)
2975 		sony_unregister_touchpad(sc);
2976 
2977 	if (sc->sensor_dev)
2978 		sony_unregister_sensors(sc);
2979 
2980 	if (sc->quirks & DUALSHOCK4_CONTROLLER_BT)
2981 		device_remove_file(&sc->hdev->dev, &dev_attr_bt_poll_interval);
2982 
2983 	if (sc->fw_version)
2984 		device_remove_file(&sc->hdev->dev, &dev_attr_firmware_version);
2985 
2986 	if (sc->hw_version)
2987 		device_remove_file(&sc->hdev->dev, &dev_attr_hardware_version);
2988 
2989 	sony_cancel_work_sync(sc);
2990 
2991 	kfree(sc->output_report_dmabuf);
2992 
2993 	sony_remove_dev_list(sc);
2994 
2995 	sony_release_device_id(sc);
2996 
2997 	hid_hw_stop(hdev);
2998 }
2999 
3000 #ifdef CONFIG_PM
3001 
3002 static int sony_suspend(struct hid_device *hdev, pm_message_t message)
3003 {
3004 #ifdef CONFIG_SONY_FF
3005 
3006 	/* On suspend stop any running force-feedback events */
3007 	if (SONY_FF_SUPPORT) {
3008 		struct sony_sc *sc = hid_get_drvdata(hdev);
3009 
3010 		sc->left = sc->right = 0;
3011 		sony_send_output_report(sc);
3012 	}
3013 
3014 #endif
3015 	return 0;
3016 }
3017 
3018 static int sony_resume(struct hid_device *hdev)
3019 {
3020 	struct sony_sc *sc = hid_get_drvdata(hdev);
3021 
3022 	/*
3023 	 * The Sixaxis and navigation controllers on USB need to be
3024 	 * reinitialized on resume or they won't behave properly.
3025 	 */
3026 	if ((sc->quirks & SIXAXIS_CONTROLLER_USB) ||
3027 		(sc->quirks & NAVIGATION_CONTROLLER_USB)) {
3028 		sixaxis_set_operational_usb(sc->hdev);
3029 		sc->defer_initialization = 1;
3030 	}
3031 
3032 	return 0;
3033 }
3034 
3035 #endif
3036 
3037 static const struct hid_device_id sony_devices[] = {
3038 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER),
3039 		.driver_data = SIXAXIS_CONTROLLER_USB },
3040 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER),
3041 		.driver_data = NAVIGATION_CONTROLLER_USB },
3042 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER),
3043 		.driver_data = NAVIGATION_CONTROLLER_BT },
3044 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_MOTION_CONTROLLER),
3045 		.driver_data = MOTION_CONTROLLER_USB },
3046 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_MOTION_CONTROLLER),
3047 		.driver_data = MOTION_CONTROLLER_BT },
3048 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER),
3049 		.driver_data = SIXAXIS_CONTROLLER_BT },
3050 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE),
3051 		.driver_data = VAIO_RDESC_CONSTANT },
3052 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE),
3053 		.driver_data = VAIO_RDESC_CONSTANT },
3054 	/*
3055 	 * Wired Buzz Controller. Reported as Sony Hub from its USB ID and as
3056 	 * Logitech joystick from the device descriptor.
3057 	 */
3058 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER),
3059 		.driver_data = BUZZ_CONTROLLER },
3060 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER),
3061 		.driver_data = BUZZ_CONTROLLER },
3062 	/* PS3 BD Remote Control */
3063 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE),
3064 		.driver_data = PS3REMOTE },
3065 	/* Logitech Harmony Adapter for PS3 */
3066 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3),
3067 		.driver_data = PS3REMOTE },
3068 	/* SMK-Link PS3 BD Remote Control */
3069 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SMK, USB_DEVICE_ID_SMK_PS3_BDREMOTE),
3070 		.driver_data = PS3REMOTE },
3071 	/* Sony Dualshock 4 controllers for PS4 */
3072 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER),
3073 		.driver_data = DUALSHOCK4_CONTROLLER_USB },
3074 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER),
3075 		.driver_data = DUALSHOCK4_CONTROLLER_BT },
3076 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_2),
3077 		.driver_data = DUALSHOCK4_CONTROLLER_USB },
3078 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_2),
3079 		.driver_data = DUALSHOCK4_CONTROLLER_BT },
3080 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_DONGLE),
3081 		.driver_data = DUALSHOCK4_DONGLE },
3082 	/* Nyko Core Controller for PS3 */
3083 	{ HID_USB_DEVICE(USB_VENDOR_ID_SINO_LITE, USB_DEVICE_ID_SINO_LITE_CONTROLLER),
3084 		.driver_data = SIXAXIS_CONTROLLER_USB | SINO_LITE_CONTROLLER },
3085 	/* SMK-Link NSG-MR5U Remote Control */
3086 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SMK, USB_DEVICE_ID_SMK_NSG_MR5U_REMOTE),
3087 		.driver_data = NSG_MR5U_REMOTE_BT },
3088 	/* SMK-Link NSG-MR7U Remote Control */
3089 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SMK, USB_DEVICE_ID_SMK_NSG_MR7U_REMOTE),
3090 		.driver_data = NSG_MR7U_REMOTE_BT },
3091 	{ }
3092 };
3093 MODULE_DEVICE_TABLE(hid, sony_devices);
3094 
3095 static struct hid_driver sony_driver = {
3096 	.name             = "sony",
3097 	.id_table         = sony_devices,
3098 	.input_mapping    = sony_mapping,
3099 	.input_configured = sony_input_configured,
3100 	.probe            = sony_probe,
3101 	.remove           = sony_remove,
3102 	.report_fixup     = sony_report_fixup,
3103 	.raw_event        = sony_raw_event,
3104 
3105 #ifdef CONFIG_PM
3106 	.suspend          = sony_suspend,
3107 	.resume	          = sony_resume,
3108 	.reset_resume     = sony_resume,
3109 #endif
3110 };
3111 
3112 static int __init sony_init(void)
3113 {
3114 	dbg_hid("Sony:%s\n", __func__);
3115 
3116 	return hid_register_driver(&sony_driver);
3117 }
3118 
3119 static void __exit sony_exit(void)
3120 {
3121 	dbg_hid("Sony:%s\n", __func__);
3122 
3123 	hid_unregister_driver(&sony_driver);
3124 	ida_destroy(&sony_device_id_allocator);
3125 }
3126 module_init(sony_init);
3127 module_exit(sony_exit);
3128 
3129 MODULE_LICENSE("GPL");
3130