drivers/input/mouse/alps.h

   1 /*
   2  * ALPS touchpad PS/2 mouse driver
   3  *
   4  * Copyright (c) 2003 Peter Osterlund <petero2@telia.com>
   5  * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 as published by
   9  * the Free Software Foundation.
  10  */
  11
  12 #ifndef _ALPS_H
  13 #define _ALPS_H
  14
  15 #include <linux/input/mt.h>
  16
  17 #define ALPS_PROTO_V1           0x100
  18 #define ALPS_PROTO_V2           0x200
  19 #define ALPS_PROTO_V3           0x300
  20 #define ALPS_PROTO_V3_RUSHMORE  0x310
  21 #define ALPS_PROTO_V4           0x400
  22 #define ALPS_PROTO_V5           0x500
  23 #define ALPS_PROTO_V6           0x600
  24 #define ALPS_PROTO_V7           0x700   /* t3btl t4s */
  25 #define ALPS_PROTO_V8           0x800   /* SS4btl SS4s */
  26
  27 #define MAX_TOUCHES     4
  28
  29 #define DOLPHIN_COUNT_PER_ELECTRODE     64
  30 #define DOLPHIN_PROFILE_XOFFSET         8       /* x-electrode offset */
  31 #define DOLPHIN_PROFILE_YOFFSET         1       /* y-electrode offset */
  32
  33 /*
  34  * enum SS4_PACKET_ID - defines the packet type for V8
  35  * SS4_PACKET_ID_IDLE: There's no finger and no button activity.
  36  * SS4_PACKET_ID_ONE: There's one finger on touchpad
  37  *  or there's button activities.
  38  * SS4_PACKET_ID_TWO: There's two or more fingers on touchpad
  39  * SS4_PACKET_ID_MULTI: There's three or more fingers on touchpad
  40  * SS4_PACKET_ID_STICK: A stick pointer packet
  41 */
  42 enum SS4_PACKET_ID {
  43         SS4_PACKET_ID_IDLE = 0,
  44         SS4_PACKET_ID_ONE,
  45         SS4_PACKET_ID_TWO,
  46         SS4_PACKET_ID_MULTI,
  47         SS4_PACKET_ID_STICK,
  48 };
  49
  50 #define SS4_COUNT_PER_ELECTRODE         256
  51 #define SS4_NUMSENSOR_XOFFSET           7
  52 #define SS4_NUMSENSOR_YOFFSET           7
  53 #define SS4_MIN_PITCH_MM                50
  54
  55 #define SS4_MASK_NORMAL_BUTTONS         0x07
  56
  57 #define SS4_IS_IDLE_V2(_b)      (((_b[0]) == 0x18) &&           \
  58                                  ((_b[1]) == 0x10) &&           \
  59                                  ((_b[2]) == 0x00) &&           \
  60                                  ((_b[3] & 0x88) == 0x08) &&    \
  61                                  ((_b[4]) == 0x10) &&           \
  62                                  ((_b[5]) == 0x00)              \
  63                                 )
  64
  65 #define SS4_1F_X_V2(_b)         (((_b[0]) & 0x0007) |           \
  66                                  ((_b[1] << 3) & 0x0078) |      \
  67                                  ((_b[1] << 2) & 0x0380) |      \
  68                                  ((_b[2] << 5) & 0x1C00)        \
  69                                 )
  70
  71 #define SS4_1F_Y_V2(_b)         (((_b[2]) & 0x000F) |           \
  72                                  ((_b[3] >> 2) & 0x0030) |      \
  73                                  ((_b[4] << 6) & 0x03C0) |      \
  74                                  ((_b[4] << 5) & 0x0C00)        \
  75                                 )
  76
  77 #define SS4_1F_Z_V2(_b)         (((_b[5]) & 0x0F) |             \
  78                                  ((_b[5] >> 1) & 0x70) |        \
  79                                  ((_b[4]) & 0x80)               \
  80                                 )
  81
  82 #define SS4_1F_LFB_V2(_b)       (((_b[2] >> 4) & 0x01) == 0x01)
  83
  84 #define SS4_MF_LF_V2(_b, _i)    ((_b[1 + (_i) * 3] & 0x0004) == 0x0004)
  85
  86 #define SS4_BTN_V2(_b)          ((_b[0] >> 5) & SS4_MASK_NORMAL_BUTTONS)
  87
  88 #define SS4_STD_MF_X_V2(_b, _i) (((_b[0 + (_i) * 3] << 5) & 0x00E0) |   \
  89                                  ((_b[1 + _i * 3]  << 5) & 0x1F00)      \
  90                                 )
  91
  92 #define SS4_STD_MF_Y_V2(_b, _i) (((_b[1 + (_i) * 3] << 3) & 0x0010) |   \
  93                                  ((_b[2 + (_i) * 3] << 5) & 0x01E0) |   \
  94                                  ((_b[2 + (_i) * 3] << 4) & 0x0E00)     \
  95                                 )
  96
  97 #define SS4_BTL_MF_X_V2(_b, _i) (SS4_STD_MF_X_V2(_b, _i) |              \
  98                                  ((_b[0 + (_i) * 3] >> 3) & 0x0010)     \
  99                                 )
 100
 101 #define SS4_BTL_MF_Y_V2(_b, _i) (SS4_STD_MF_Y_V2(_b, _i) | \
 102                                  ((_b[0 + (_i) * 3] >> 3) & 0x0008)     \
 103                                 )
 104
 105 #define SS4_MF_Z_V2(_b, _i)     (((_b[1 + (_i) * 3]) & 0x0001) |        \
 106                                  ((_b[1 + (_i) * 3] >> 1) & 0x0002)     \
 107                                 )
 108
 109 #define SS4_IS_MF_CONTINUE(_b)  ((_b[2] & 0x10) == 0x10)
 110 #define SS4_IS_5F_DETECTED(_b)  ((_b[2] & 0x10) == 0x10)
 111
 112 #define SS4_TS_X_V2(_b)         (s8)(                           \
 113                                  ((_b[0] & 0x01) << 7) |        \
 114                                  (_b[1] & 0x7F)         \
 115                                 )
 116
 117 #define SS4_TS_Y_V2(_b)         (s8)(                           \
 118                                  ((_b[3] & 0x01) << 7) |        \
 119                                  (_b[2] & 0x7F)         \
 120                                 )
 121
 122 #define SS4_TS_Z_V2(_b)         (s8)(_b[4] & 0x7F)
 123
 124
 125 #define SS4_MFPACKET_NO_AX      8160    /* X-Coordinate value */
 126 #define SS4_MFPACKET_NO_AY      4080    /* Y-Coordinate value */
 127 #define SS4_MFPACKET_NO_AX_BL   8176    /* Buttonless X-Coordinate value */
 128 #define SS4_MFPACKET_NO_AY_BL   4088    /* Buttonless Y-Coordinate value */
 129
 130 /*
 131  * enum V7_PACKET_ID - defines the packet type for V7
 132  * V7_PACKET_ID_IDLE: There's no finger and no button activity.
 133  * V7_PACKET_ID_TWO: There's one or two non-resting fingers on touchpad
 134  *  or there's button activities.
 135  * V7_PACKET_ID_MULTI: There are at least three non-resting fingers.
 136  * V7_PACKET_ID_NEW: The finger position in slot is not continues from
 137  *  previous packet.
 138 */
 139 enum V7_PACKET_ID {
 140          V7_PACKET_ID_IDLE,
 141          V7_PACKET_ID_TWO,
 142          V7_PACKET_ID_MULTI,
 143          V7_PACKET_ID_NEW,
 144          V7_PACKET_ID_UNKNOWN,
 145 };
 146
 147 /**
 148  * struct alps_protocol_info - information about protocol used by a device
 149  * @version: Indicates V1/V2/V3/...
 150  * @byte0: Helps figure out whether a position report packet matches the
 151  *   known format for this model.  The first byte of the report, ANDed with
 152  *   mask0, should match byte0.
 153  * @mask0: The mask used to check the first byte of the report.
 154  * @flags: Additional device capabilities (passthrough port, trackstick, etc.).
 155  */
 156 struct alps_protocol_info {
 157         u16 version;
 158         u8 byte0, mask0;
 159         unsigned int flags;
 160 };
 161
 162 /**
 163  * struct alps_model_info - touchpad ID table
 164  * @signature: E7 response string to match.
 165  * @command_mode_resp: For V3/V4 touchpads, the final byte of the EC response
 166  *   (aka command mode response) identifies the firmware minor version.  This
 167  *   can be used to distinguish different hardware models which are not
 168  *   uniquely identifiable through their E7 responses.
 169  * @protocol_info: information about protocol used by the device.
 170  *
 171  * Many (but not all) ALPS touchpads can be identified by looking at the
 172  * values returned in the "E7 report" and/or the "EC report."  This table
 173  * lists a number of such touchpads.
 174  */
 175 struct alps_model_info {
 176         u8 signature[3];
 177         u8 command_mode_resp;
 178         struct alps_protocol_info protocol_info;
 179 };
 180
 181 /**
 182  * struct alps_nibble_commands - encodings for register accesses
 183  * @command: PS/2 command used for the nibble
 184  * @data: Data supplied as an argument to the PS/2 command, if applicable
 185  *
 186  * The ALPS protocol uses magic sequences to transmit binary data to the
 187  * touchpad, as it is generally not OK to send arbitrary bytes out the
 188  * PS/2 port.  Each of the sequences in this table sends one nibble of the
 189  * register address or (write) data.  Different versions of the ALPS protocol
 190  * use slightly different encodings.
 191  */
 192 struct alps_nibble_commands {
 193         int command;
 194         unsigned char data;
 195 };
 196
 197 struct alps_bitmap_point {
 198         int start_bit;
 199         int num_bits;
 200 };
 201
 202 /**
 203  * struct alps_fields - decoded version of the report packet
 204  * @x_map: Bitmap of active X positions for MT.
 205  * @y_map: Bitmap of active Y positions for MT.
 206  * @fingers: Number of fingers for MT.
 207  * @pressure: Pressure.
 208  * @st: position for ST.
 209  * @mt: position for MT.
 210  * @first_mp: Packet is the first of a multi-packet report.
 211  * @is_mp: Packet is part of a multi-packet report.
 212  * @left: Left touchpad button is active.
 213  * @right: Right touchpad button is active.
 214  * @middle: Middle touchpad button is active.
 215  * @ts_left: Left trackstick button is active.
 216  * @ts_right: Right trackstick button is active.
 217  * @ts_middle: Middle trackstick button is active.
 218  */
 219 struct alps_fields {
 220         unsigned int x_map;
 221         unsigned int y_map;
 222         unsigned int fingers;
 223
 224         int pressure;
 225         struct input_mt_pos st;
 226         struct input_mt_pos mt[MAX_TOUCHES];
 227
 228         unsigned int first_mp:1;
 229         unsigned int is_mp:1;
 230
 231         unsigned int left:1;
 232         unsigned int right:1;
 233         unsigned int middle:1;
 234
 235         unsigned int ts_left:1;
 236         unsigned int ts_right:1;
 237         unsigned int ts_middle:1;
 238 };
 239
 240 /**
 241  * struct alps_data - private data structure for the ALPS driver
 242  * @psmouse: Pointer to parent psmouse device
 243  * @dev2: Trackstick device (can be NULL).
 244  * @dev3: Generic PS/2 mouse (can be NULL, delayed registering).
 245  * @phys2: Physical path for the trackstick device.
 246  * @phys3: Physical path for the generic PS/2 mouse.
 247  * @dev3_register_work: Delayed work for registering PS/2 mouse.
 248  * @nibble_commands: Command mapping used for touchpad register accesses.
 249  * @addr_command: Command used to tell the touchpad that a register address
 250  *   follows.
 251  * @proto_version: Indicates V1/V2/V3/...
 252  * @byte0: Helps figure out whether a position report packet matches the
 253  *   known format for this model.  The first byte of the report, ANDed with
 254  *   mask0, should match byte0.
 255  * @mask0: The mask used to check the first byte of the report.
 256  * @fw_ver: cached copy of firmware version (EC report)
 257  * @flags: Additional device capabilities (passthrough port, trackstick, etc.).
 258  * @x_max: Largest possible X position value.
 259  * @y_max: Largest possible Y position value.
 260  * @x_bits: Number of X bits in the MT bitmap.
 261  * @y_bits: Number of Y bits in the MT bitmap.
 262  * @hw_init: Protocol-specific hardware init function.
 263  * @process_packet: Protocol-specific function to process a report packet.
 264  * @decode_fields: Protocol-specific function to read packet bitfields.
 265  * @set_abs_params: Protocol-specific function to configure the input_dev.
 266  * @prev_fin: Finger bit from previous packet.
 267  * @multi_packet: Multi-packet data in progress.
 268  * @multi_data: Saved multi-packet data.
 269  * @f: Decoded packet data fields.
 270  * @quirks: Bitmap of ALPS_QUIRK_*.
 271  * @timer: Timer for flushing out the final report packet in the stream.
 272  */
 273 struct alps_data {
 274         struct psmouse *psmouse;
 275         struct input_dev *dev2;
 276         struct input_dev *dev3;
 277         char phys2[32];
 278         char phys3[32];
 279         struct delayed_work dev3_register_work;
 280
 281         /* these are autodetected when the device is identified */
 282         const struct alps_nibble_commands *nibble_commands;
 283         int addr_command;
 284         u16 proto_version;
 285         u8 byte0, mask0;
 286         u8 fw_ver[3];
 287         int flags;
 288         int x_max;
 289         int y_max;
 290         int x_bits;
 291         int y_bits;
 292         unsigned int x_res;
 293         unsigned int y_res;
 294
 295         int (*hw_init)(struct psmouse *psmouse);
 296         void (*process_packet)(struct psmouse *psmouse);
 297         int (*decode_fields)(struct alps_fields *f, unsigned char *p,
 298                               struct psmouse *psmouse);
 299         void (*set_abs_params)(struct alps_data *priv, struct input_dev *dev1);
 300
 301         int prev_fin;
 302         int multi_packet;
 303         int second_touch;
 304         unsigned char multi_data[6];
 305         struct alps_fields f;
 306         u8 quirks;
 307         struct timer_list timer;
 308 };
 309
 310 #define ALPS_QUIRK_TRACKSTICK_BUTTONS   1 /* trakcstick buttons in trackstick packet */
 311
 312 #ifdef CONFIG_MOUSE_PS2_ALPS
 313 int alps_detect(struct psmouse *psmouse, bool set_properties);
 314 int alps_init(struct psmouse *psmouse);
 315 #else
 316 inline int alps_detect(struct psmouse *psmouse, bool set_properties)
 317 {
 318         return -ENOSYS;
 319 }
 320 inline int alps_init(struct psmouse *psmouse)
 321 {
 322         return -ENOSYS;
 323 }
 324 #endif /* CONFIG_MOUSE_PS2_ALPS */
 325
 326 #endif