Documentation/input/sentelic.txt

   1 Copyright (C) 2002-2010 Sentelic Corporation.
   2 Last update: Jan-13-2010
   3
   4 ==============================================================================
   5 * Finger Sensing Pad Intellimouse Mode(scrolling wheel, 4th and 5th buttons)
   6 ==============================================================================
   7 A) MSID 4: Scrolling wheel mode plus Forward page(4th button) and Backward
   8    page (5th button)
   9 @1. Set sample rate to 200;
  10 @2. Set sample rate to 200;
  11 @3. Set sample rate to 80;
  12 @4. Issuing the "Get device ID" command (0xF2) and waits for the response;
  13 @5. FSP will respond 0x04.
  14
  15 Packet 1
  16    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
  17 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
  18   1   |Y|X|y|x|1|M|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 | | |B|F|W|W|W|W|
  19       |---------------|     |---------------|    |---------------|    |---------------|
  20
  21 Byte 1: Bit7 => Y overflow
  22         Bit6 => X overflow
  23         Bit5 => Y sign bit
  24         Bit4 => X sign bit
  25         Bit3 => 1
  26         Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
  27         Bit1 => Right Button, 1 is pressed, 0 is not pressed.
  28         Bit0 => Left Button, 1 is pressed, 0 is not pressed.
  29 Byte 2: X Movement(9-bit 2's complement integers)
  30 Byte 3: Y Movement(9-bit 2's complement integers)
  31 Byte 4: Bit3~Bit0 => the scrolling wheel's movement since the last data report.
  32                      valid values, -8 ~ +7
  33         Bit4 => 1 = 4th mouse button is pressed, Forward one page.
  34                 0 = 4th mouse button is not pressed.
  35         Bit5 => 1 = 5th mouse button is pressed, Backward one page.
  36                 0 = 5th mouse button is not pressed.
  37
  38 B) MSID 6: Horizontal and Vertical scrolling.
  39 @ Set bit 1 in register 0x40 to 1
  40
  41 # FSP replaces scrolling wheel's movement as 4 bits to show horizontal and
  42   vertical scrolling.
  43
  44 Packet 1
  45    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
  46 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
  47   1   |Y|X|y|x|1|M|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 | | |B|F|r|l|u|d|
  48       |---------------|     |---------------|    |---------------|    |---------------|
  49
  50 Byte 1: Bit7 => Y overflow
  51         Bit6 => X overflow
  52         Bit5 => Y sign bit
  53         Bit4 => X sign bit
  54         Bit3 => 1
  55         Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
  56         Bit1 => Right Button, 1 is pressed, 0 is not pressed.
  57         Bit0 => Left Button, 1 is pressed, 0 is not pressed.
  58 Byte 2: X Movement(9-bit 2's complement integers)
  59 Byte 3: Y Movement(9-bit 2's complement integers)
  60 Byte 4: Bit0 => the Vertical scrolling movement downward.
  61         Bit1 => the Vertical scrolling movement upward.
  62         Bit2 => the Horizontal scrolling movement leftward.
  63         Bit3 => the Horizontal scrolling movement rightward.
  64         Bit4 => 1 = 4th mouse button is pressed, Forward one page.
  65                 0 = 4th mouse button is not pressed.
  66         Bit5 => 1 = 5th mouse button is pressed, Backward one page.
  67                 0 = 5th mouse button is not pressed.
  68
  69 C) MSID 7:
  70 # FSP uses 2 packets (8 Bytes) to represent Absolute Position.
  71   so we have PACKET NUMBER to identify packets.
  72   If PACKET NUMBER is 0, the packet is Packet 1.
  73   If PACKET NUMBER is 1, the packet is Packet 2.
  74   Please count this number in program.
  75
  76 # MSID6 special packet will be enable at the same time when enable MSID 7.
  77
  78 ==============================================================================
  79 * Absolute position for STL3886-G0.
  80 ==============================================================================
  81 @ Set bit 2 or 3 in register 0x40 to 1
  82 @ Set bit 6 in register 0x40 to 1
  83
  84 Packet 1 (ABSOLUTE POSITION)
  85    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
  86 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
  87   1   |0|1|V|1|1|M|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |r|l|d|u|X|X|Y|Y|
  88       |---------------|     |---------------|    |---------------|    |---------------|
  89
  90 Byte 1: Bit7~Bit6 => 00, Normal data packet
  91                   => 01, Absolute coordination packet
  92                   => 10, Notify packet
  93         Bit5 => valid bit
  94         Bit4 => 1
  95         Bit3 => 1
  96         Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
  97         Bit1 => Right Button, 1 is pressed, 0 is not pressed.
  98         Bit0 => Left Button, 1 is pressed, 0 is not pressed.
  99 Byte 2: X coordinate (xpos[9:2])
 100 Byte 3: Y coordinate (ypos[9:2])
 101 Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
 102         Bit3~Bit2 => X coordinate (ypos[1:0])
 103         Bit4 => scroll up
 104         Bit5 => scroll down
 105         Bit6 => scroll left
 106         Bit7 => scroll right
 107
 108 Notify Packet for G0
 109    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
 110 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
 111   1   |1|0|0|1|1|M|R|L|  2  |C|C|C|C|C|C|C|C|  3 |M|M|M|M|M|M|M|M|  4 |0|0|0|0|0|0|0|0|
 112       |---------------|     |---------------|    |---------------|    |---------------|
 113
 114 Byte 1: Bit7~Bit6 => 00, Normal data packet
 115                   => 01, Absolute coordination packet
 116                   => 10, Notify packet
 117         Bit5 => 0
 118         Bit4 => 1
 119         Bit3 => 1
 120         Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
 121         Bit1 => Right Button, 1 is pressed, 0 is not pressed.
 122         Bit0 => Left Button, 1 is pressed, 0 is not pressed.
 123 Byte 2: Message Type => 0x5A (Enable/Disable status packet)
 124         Mode Type => 0xA5 (Normal/Icon mode status)
 125 Byte 3: Message Type => 0x00 (Disabled)
 126                      => 0x01 (Enabled)
 127         Mode Type    => 0x00 (Normal)
 128                      => 0x01 (Icon)
 129 Byte 4: Bit7~Bit0 => Don't Care
 130
 131 ==============================================================================
 132 * Absolute position for STL3888-Ax.
 133 ==============================================================================
 134 Packet 1 (ABSOLUTE POSITION)
 135    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
 136 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
 137   1   |0|1|V|A|1|L|0|1|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |x|x|y|y|X|X|Y|Y|
 138       |---------------|     |---------------|    |---------------|    |---------------|
 139
 140 Byte 1: Bit7~Bit6 => 00, Normal data packet
 141                   => 01, Absolute coordination packet
 142                   => 10, Notify packet
 143         Bit5 => Valid bit, 0 means that the coordinate is invalid or finger up.
 144                 When both fingers are up, the last two reports have zero valid
 145                 bit.
 146         Bit4 => arc
 147         Bit3 => 1
 148         Bit2 => Left Button, 1 is pressed, 0 is released.
 149         Bit1 => 0
 150         Bit0 => 1
 151 Byte 2: X coordinate (xpos[9:2])
 152 Byte 3: Y coordinate (ypos[9:2])
 153 Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
 154         Bit3~Bit2 => X coordinate (ypos[1:0])
 155         Bit5~Bit4 => y1_g
 156         Bit7~Bit6 => x1_g
 157
 158 Packet 2 (ABSOLUTE POSITION)
 159    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
 160 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
 161   1   |0|1|V|A|1|R|1|0|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |x|x|y|y|X|X|Y|Y|
 162       |---------------|     |---------------|    |---------------|    |---------------|
 163
 164 Byte 1: Bit7~Bit6 => 00, Normal data packet
 165                   => 01, Absolute coordinates packet
 166                   => 10, Notify packet
 167         Bit5 => Valid bit, 0 means that the coordinate is invalid or finger up.
 168                 When both fingers are up, the last two reports have zero valid
 169                 bit.
 170         Bit4 => arc
 171         Bit3 => 1
 172         Bit2 => Right Button, 1 is pressed, 0 is released.
 173         Bit1 => 1
 174         Bit0 => 0
 175 Byte 2: X coordinate (xpos[9:2])
 176 Byte 3: Y coordinate (ypos[9:2])
 177 Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
 178         Bit3~Bit2 => X coordinate (ypos[1:0])
 179         Bit5~Bit4 => y2_g
 180         Bit7~Bit6 => x2_g
 181
 182 Notify Packet for STL3888-Ax
 183    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
 184 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
 185   1   |1|0|1|P|1|M|R|L|  2  |C|C|C|C|C|C|C|C|  3 |0|0|F|F|0|0|0|i|  4 |r|l|d|u|0|0|0|0|
 186       |---------------|     |---------------|    |---------------|    |---------------|
 187
 188 Byte 1: Bit7~Bit6 => 00, Normal data packet
 189                   => 01, Absolute coordinates packet
 190                   => 10, Notify packet
 191         Bit5 => 1
 192         Bit4 => when in absolute coordinates mode (valid when EN_PKT_GO is 1):
 193                 0: left button is generated by the on-pad command
 194                 1: left button is generated by the external button
 195         Bit3 => 1
 196         Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
 197         Bit1 => Right Button, 1 is pressed, 0 is not pressed.
 198         Bit0 => Left Button, 1 is pressed, 0 is not pressed.
 199 Byte 2: Message Type => 0xB7 (Multi Finger, Multi Coordinate mode)
 200 Byte 3: Bit7~Bit6 => Don't care
 201         Bit5~Bit4 => Number of fingers
 202         Bit3~Bit1 => Reserved
 203         Bit0 => 1: enter gesture mode; 0: leaving gesture mode
 204 Byte 4: Bit7 => scroll right button
 205         Bit6 => scroll left button
 206         Bit5 => scroll down button
 207         Bit4 => scroll up button
 208             * Note that if gesture and additional buttoni (Bit4~Bit7)
 209               happen at the same time, the button information will not
 210               be sent.
 211         Bit3~Bit0 => Reserved
 212
 213 Sample sequence of Multi-finger, Multi-coordinate mode:
 214
 215         notify packet (valid bit == 1), abs pkt 1, abs pkt 2, abs pkt 1,
 216         abs pkt 2, ..., notify packet (valid bit == 0)
 217
 218 ==============================================================================
 219 * Absolute position for STL3888-B0.
 220 ==============================================================================
 221 Packet 1(ABSOLUTE POSITION)
 222    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
 223 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
 224   1   |0|1|V|F|1|0|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |r|l|u|d|X|X|Y|Y|
 225       |---------------|     |---------------|    |---------------|    |---------------|
 226
 227 Byte 1: Bit7~Bit6 => 00, Normal data packet
 228                   => 01, Absolute coordinates packet
 229                   => 10, Notify packet
 230         Bit5 => Valid bit, 0 means that the coordinate is invalid or finger up.
 231                 When both fingers are up, the last two reports have zero valid
 232                 bit.
 233         Bit4 => finger up/down information. 1: finger down, 0: finger up.
 234         Bit3 => 1
 235         Bit2 => finger index, 0 is the first finger, 1 is the second finger.
 236         Bit1 => Right Button, 1 is pressed, 0 is not pressed.
 237         Bit0 => Left Button, 1 is pressed, 0 is not pressed.
 238 Byte 2: X coordinate (xpos[9:2])
 239 Byte 3: Y coordinate (ypos[9:2])
 240 Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
 241         Bit3~Bit2 => X coordinate (ypos[1:0])
 242         Bit4 => scroll down button
 243         Bit5 => scroll up button
 244         Bit6 => scroll left button
 245         Bit7 => scroll right button
 246
 247 Packet 2 (ABSOLUTE POSITION)
 248    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
 249 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
 250   1   |0|1|V|F|1|1|R|L|  2  |X|X|X|X|X|X|X|X|  3 |Y|Y|Y|Y|Y|Y|Y|Y|  4 |r|l|u|d|X|X|Y|Y|
 251       |---------------|     |---------------|    |---------------|    |---------------|
 252
 253 Byte 1: Bit7~Bit6 => 00, Normal data packet
 254                   => 01, Absolute coordination packet
 255                   => 10, Notify packet
 256         Bit5 => Valid bit, 0 means that the coordinate is invalid or finger up.
 257                 When both fingers are up, the last two reports have zero valid
 258                 bit.
 259         Bit4 => finger up/down information. 1: finger down, 0: finger up.
 260         Bit3 => 1
 261         Bit2 => finger index, 0 is the first finger, 1 is the second finger.
 262         Bit1 => Right Button, 1 is pressed, 0 is not pressed.
 263         Bit0 => Left Button, 1 is pressed, 0 is not pressed.
 264 Byte 2: X coordinate (xpos[9:2])
 265 Byte 3: Y coordinate (ypos[9:2])
 266 Byte 4: Bit1~Bit0 => Y coordinate (xpos[1:0])
 267         Bit3~Bit2 => X coordinate (ypos[1:0])
 268         Bit4 => scroll down button
 269         Bit5 => scroll up button
 270         Bit6 => scroll left button
 271         Bit7 => scroll right button
 272
 273 Notify Packet for STL3888-B0
 274    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
 275 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
 276   1   |1|0|1|P|1|M|R|L|  2  |C|C|C|C|C|C|C|C|  3 |0|0|F|F|0|0|0|i|  4 |r|l|u|d|0|0|0|0|
 277       |---------------|     |---------------|    |---------------|    |---------------|
 278
 279 Byte 1: Bit7~Bit6 => 00, Normal data packet
 280                   => 01, Absolute coordination packet
 281                   => 10, Notify packet
 282         Bit5 => 1
 283         Bit4 => when in absolute coordinate mode (valid when EN_PKT_GO is 1):
 284                 0: left button is generated by the on-pad command
 285                 1: left button is generated by the external button
 286         Bit3 => 1
 287         Bit2 => Middle Button, 1 is pressed, 0 is not pressed.
 288         Bit1 => Right Button, 1 is pressed, 0 is not pressed.
 289         Bit0 => Left Button, 1 is pressed, 0 is not pressed.
 290 Byte 2: Message Type => 0xB7 (Multi Finger, Multi Coordinate mode)
 291 Byte 3: Bit7~Bit6 => Don't care
 292         Bit5~Bit4 => Number of fingers
 293         Bit3~Bit1 => Reserved
 294         Bit0 => 1: enter gesture mode; 0: leaving gesture mode
 295 Byte 4: Bit7 => scroll right button
 296         Bit6 => scroll left button
 297         Bit5 => scroll up button
 298         Bit4 => scroll down button
 299             * Note that if gesture and additional button(Bit4~Bit7)
 300               happen at the same time, the button information will not
 301               be sent.
 302         Bit3~Bit0 => Reserved
 303
 304 Sample sequence of Multi-finger, Multi-coordinate mode:
 305
 306         notify packet (valid bit == 1), abs pkt 1, abs pkt 2, abs pkt 1,
 307         abs pkt 2, ..., notify packet (valid bit == 0)
 308
 309 ==============================================================================
 310 * FSP Enable/Disable packet
 311 ==============================================================================
 312    Bit 7 6 5 4 3 2 1 0       7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0      7 6 5 4 3 2 1 0
 313 BYTE  |---------------|BYTE |---------------|BYTE|---------------|BYTE|---------------|
 314   1   |Y|X|0|0|1|M|R|L|  2  |0|1|0|1|1|0|1|E|  3 | | | | | | | | |  4 | | | | | | | | |
 315       |---------------|     |---------------|    |---------------|    |---------------|
 316
 317 FSP will send out enable/disable packet when FSP receive PS/2 enable/disable
 318 command. Host will receive the packet which Middle, Right, Left button will
 319 be set. The packet only use byte 0 and byte 1 as a pattern of original packet.
 320 Ignore the other bytes of the packet.
 321
 322 Byte 1: Bit7 => 0, Y overflow
 323         Bit6 => 0, X overflow
 324         Bit5 => 0, Y sign bit
 325         Bit4 => 0, X sign bit
 326         Bit3 => 1
 327         Bit2 => 1, Middle Button
 328         Bit1 => 1, Right Button
 329         Bit0 => 1, Left Button
 330 Byte 2: Bit7~1 => (0101101b)
 331         Bit0 => 1 = Enable
 332                 0 = Disable
 333 Byte 3: Don't care
 334 Byte 4: Don't care (MOUSE ID 3, 4)
 335 Byte 5~8: Don't care (Absolute packet)
 336
 337 ==============================================================================
 338 * PS/2 Command Set
 339 ==============================================================================
 340
 341 FSP supports basic PS/2 commanding set and modes, refer to following URL for
 342 details about PS/2 commands:
 343
 344 http://www.computer-engineering.org/index.php?title=PS/2_Mouse_Interface
 345
 346 ==============================================================================
 347 * Programming Sequence for Determining Packet Parsing Flow
 348 ==============================================================================
 349 1. Identify FSP by reading device ID(0x00) and version(0x01) register
 350
 351 2. Determine number of buttons by reading status2 (0x0b) register
 352
 353         buttons = reg[0x0b] & 0x30
 354
 355         if buttons == 0x30 or buttons == 0x20:
 356                 # two/four buttons
 357                 Refer to 'Finger Sensing Pad PS/2 Mouse Intellimouse'
 358                 section A for packet parsing detail(ignore byte 4, bit ~ 7)
 359         elif buttons == 0x10:
 360                 # 6 buttons
 361                 Refer to 'Finger Sensing Pad PS/2 Mouse Intellimouse'
 362                 section B for packet parsing detail
 363         elif buttons == 0x00:
 364                 # 6 buttons
 365                 Refer to 'Finger Sensing Pad PS/2 Mouse Intellimouse'
 366                 section A for packet parsing detail
 367
 368 ==============================================================================
 369 * Programming Sequence for Register Reading/Writing
 370 ==============================================================================
 371
 372 Register inversion requirement:
 373
 374   Following values needed to be inverted(the '~' operator in C) before being
 375 sent to FSP:
 376
 377         0xe9, 0xee, 0xf2 and 0xff.
 378
 379 Register swapping requirement:
 380
 381   Following values needed to have their higher 4 bits and lower 4 bits being
 382 swapped before being sent to FSP:
 383
 384         10, 20, 40, 60, 80, 100 and 200.
 385
 386 Register reading sequence:
 387
 388         1. send 0xf3 PS/2 command to FSP;
 389
 390         2. send 0x66 PS/2 command to FSP;
 391
 392         3. send 0x88 PS/2 command to FSP;
 393
 394         4. send 0xf3 PS/2 command to FSP;
 395
 396         5. if the register address being to read is not required to be
 397         inverted(refer to the 'Register inversion requirement' section),
 398         goto step 6
 399
 400         5a. send 0x68 PS/2 command to FSP;
 401
 402         5b. send the inverted register address to FSP and goto step 8;
 403
 404         6. if the register address being to read is not required to be
 405         swapped(refer to the 'Register swapping requirement' section),
 406         goto step 7
 407
 408         6a. send 0xcc PS/2 command to FSP;
 409
 410         6b. send the swapped register address to FSP and goto step 8;
 411
 412         7. send 0x66 PS/2 command to FSP;
 413
 414         7a. send the original register address to FSP and goto step 8;
 415
 416         8. send 0xe9(status request) PS/2 command to FSP;
 417
 418         9. the response read from FSP should be the requested register value.
 419
 420 Register writing sequence:
 421
 422         1. send 0xf3 PS/2 command to FSP;
 423
 424         2. if the register address being to write is not required to be
 425         inverted(refer to the 'Register inversion requirement' section),
 426         goto step 3
 427
 428         2a. send 0x74 PS/2 command to FSP;
 429
 430         2b. send the inverted register address to FSP and goto step 5;
 431
 432         3. if the register address being to write is not required to be
 433         swapped(refer to the 'Register swapping requirement' section),
 434         goto step 4
 435
 436         3a. send 0x77 PS/2 command to FSP;
 437
 438         3b. send the swapped register address to FSP and goto step 5;
 439
 440         4. send 0x55 PS/2 command to FSP;
 441
 442         4a. send the register address to FSP and goto step 5;
 443
 444         5. send 0xf3 PS/2 command to FSP;
 445
 446         6. if the register value being to write is not required to be
 447         inverted(refer to the 'Register inversion requirement' section),
 448         goto step 7
 449
 450         6a. send 0x47 PS/2 command to FSP;
 451
 452         6b. send the inverted register value to FSP and goto step 9;
 453
 454         7. if the register value being to write is not required to be
 455         swapped(refer to the 'Register swapping requirement' section),
 456         goto step 8
 457
 458         7a. send 0x44 PS/2 command to FSP;
 459
 460         7b. send the swapped register value to FSP and goto step 9;
 461
 462         8. send 0x33 PS/2 command to FSP;
 463
 464         8a. send the register value to FSP;
 465
 466         9. the register writing sequence is completed.
 467
 468 ==============================================================================
 469 * Register Listing
 470 ==============================================================================
 471
 472 offset  width           default r/w     name
 473 0x00    bit7~bit0       0x01    RO      device ID
 474
 475 0x01    bit7~bit0       0xc0    RW      version ID
 476
 477 0x02    bit7~bit0       0x01    RO      vendor ID
 478
 479 0x03    bit7~bit0       0x01    RO      product ID
 480
 481 0x04    bit3~bit0       0x01    RW      revision ID
 482
 483 0x0b                            RO      test mode status 1
 484         bit3            1       RO      0: rotate 180 degree, 1: no rotation
 485
 486         bit5~bit4               RO      number of buttons
 487                         11 => 2, lbtn/rbtn
 488                         10 => 4, lbtn/rbtn/scru/scrd
 489                         01 => 6, lbtn/rbtn/scru/scrd/scrl/scrr
 490                         00 => 6, lbtn/rbtn/scru/scrd/fbtn/bbtn
 491
 492 0x0f                            RW      register file page control
 493         bit0            0       RW      1 to enable page 1 register files
 494
 495 0x10                            RW      system control 1
 496         bit0            1       RW      Reserved, must be 1
 497         bit1            0       RW      Reserved, must be 0
 498         bit4            1       RW      Reserved, must be 0
 499         bit5            0       RW      register clock gating enable
 500                                         0: read only, 1: read/write enable
 501         (Note that following registers does not require clock gating being
 502         enabled prior to write: 05 06 07 08 09 0c 0f 10 11 12 16 17 18 23 2e
 503         40 41 42 43.  In addition to that, this bit must be 1 when gesture
 504         mode is enabled)
 505
 506 0x31                            RW      on-pad command detection
 507         bit7            0       RW      on-pad command left button down tag
 508                                         enable
 509                                         0: disable, 1: enable
 510
 511 0x34                            RW      on-pad command control 5
 512         bit4~bit0       0x05    RW      XLO in 0s/4/1, so 03h = 0010.1b = 2.5
 513         (Note that position unit is in 0.5 scanline)
 514
 515         bit7            0       RW      on-pad tap zone enable
 516                                         0: disable, 1: enable
 517
 518 0x35                            RW      on-pad command control 6
 519         bit4~bit0       0x1d    RW      XHI in 0s/4/1, so 19h = 1100.1b = 12.5
 520         (Note that position unit is in 0.5 scanline)
 521
 522 0x36                            RW      on-pad command control 7
 523         bit4~bit0       0x04    RW      YLO in 0s/4/1, so 03h = 0010.1b = 2.5
 524         (Note that position unit is in 0.5 scanline)
 525
 526 0x37                            RW      on-pad command control 8
 527         bit4~bit0       0x13    RW      YHI in 0s/4/1, so 11h = 1000.1b = 8.5
 528         (Note that position unit is in 0.5 scanline)
 529
 530 0x40                            RW      system control 5
 531         bit1            0       RW      FSP Intellimouse mode enable
 532                                         0: disable, 1: enable
 533
 534         bit2            0       RW      movement + abs. coordinate mode enable
 535                                         0: disable, 1: enable
 536         (Note that this function has the functionality of bit 1 even when
 537         bit 1 is not set. However, the format is different from that of bit 1.
 538         In addition, when bit 1 and bit 2 are set at the same time, bit 2 will
 539         override bit 1.)
 540
 541         bit3            0       RW      abs. coordinate only mode enable
 542                                         0: disable, 1: enable
 543         (Note that this function has the functionality of bit 1 even when
 544         bit 1 is not set. However, the format is different from that of bit 1.
 545         In addition, when bit 1, bit 2 and bit 3 are set at the same time,
 546         bit 3 will override bit 1 and 2.)
 547
 548         bit5            0       RW      auto switch enable
 549                                         0: disable, 1: enable
 550
 551         bit6            0       RW      G0 abs. + notify packet format enable
 552                                         0: disable, 1: enable
 553         (Note that the absolute/relative coordinate output still depends on
 554         bit 2 and 3.  That is, if any of those bit is 1, host will receive
 555         absolute coordinates; otherwise, host only receives packets with
 556         relative coordinate.)
 557
 558         bit7            0       RW      EN_PS2_F2: PS/2 gesture mode 2nd
 559                                         finger packet enable
 560                                         0: disable, 1: enable
 561
 562 0x43                            RW      on-pad control
 563         bit0            0       RW      on-pad control enable
 564                                         0: disable, 1: enable
 565         (Note that if this bit is cleared, bit 3/5 will be ineffective)
 566
 567         bit3            0       RW      on-pad fix vertical scrolling enable
 568                                         0: disable, 1: enable
 569
 570         bit5            0       RW      on-pad fix horizontal scrolling enable
 571                                         0: disable, 1: enable