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