drivers/input/mouse/synaptics.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Synaptics TouchPad PS/2 mouse driver
   4  */
   5
   6 #ifndef _SYNAPTICS_H
   7 #define _SYNAPTICS_H
   8
   9 /* synaptics queries */
  10 #define SYN_QUE_IDENTIFY                0x00
  11 #define SYN_QUE_MODES                   0x01
  12 #define SYN_QUE_CAPABILITIES            0x02
  13 #define SYN_QUE_MODEL                   0x03
  14 #define SYN_QUE_SERIAL_NUMBER_PREFIX    0x06
  15 #define SYN_QUE_SERIAL_NUMBER_SUFFIX    0x07
  16 #define SYN_QUE_RESOLUTION              0x08
  17 #define SYN_QUE_EXT_CAPAB               0x09
  18 #define SYN_QUE_FIRMWARE_ID             0x0a
  19 #define SYN_QUE_EXT_CAPAB_0C            0x0c
  20 #define SYN_QUE_EXT_MAX_COORDS          0x0d
  21 #define SYN_QUE_EXT_MIN_COORDS          0x0f
  22 #define SYN_QUE_MEXT_CAPAB_10           0x10
  23
  24 /* synatics modes */
  25 #define SYN_BIT_ABSOLUTE_MODE           BIT(7)
  26 #define SYN_BIT_HIGH_RATE               BIT(6)
  27 #define SYN_BIT_SLEEP_MODE              BIT(3)
  28 #define SYN_BIT_DISABLE_GESTURE         BIT(2)
  29 #define SYN_BIT_FOUR_BYTE_CLIENT        BIT(1)
  30 #define SYN_BIT_W_MODE                  BIT(0)
  31
  32 /* synaptics model ID bits */
  33 #define SYN_MODEL_ROT180(m)             ((m) & BIT(23))
  34 #define SYN_MODEL_PORTRAIT(m)           ((m) & BIT(22))
  35 #define SYN_MODEL_SENSOR(m)             (((m) & GENMASK(21, 16)) >> 16)
  36 #define SYN_MODEL_HARDWARE(m)           (((m) & GENMASK(15, 9)) >> 9)
  37 #define SYN_MODEL_NEWABS(m)             ((m) & BIT(7))
  38 #define SYN_MODEL_PEN(m)                ((m) & BIT(6))
  39 #define SYN_MODEL_SIMPLIC(m)            ((m) & BIT(5))
  40 #define SYN_MODEL_GEOMETRY(m)           ((m) & GENMASK(3, 0))
  41
  42 /* synaptics capability bits */
  43 #define SYN_CAP_EXTENDED(c)             ((c) & BIT(23))
  44 #define SYN_CAP_MIDDLE_BUTTON(c)        ((c) & BIT(18))
  45 #define SYN_CAP_PASS_THROUGH(c)         ((c) & BIT(7))
  46 #define SYN_CAP_SLEEP(c)                ((c) & BIT(4))
  47 #define SYN_CAP_FOUR_BUTTON(c)          ((c) & BIT(3))
  48 #define SYN_CAP_MULTIFINGER(c)          ((c) & BIT(1))
  49 #define SYN_CAP_PALMDETECT(c)           ((c) & BIT(0))
  50 #define SYN_CAP_SUBMODEL_ID(c)          (((c) & GENMASK(15, 8)) >> 8)
  51 #define SYN_EXT_CAP_REQUESTS(c)         (((c) & GENMASK(22, 20)) >> 20)
  52 #define SYN_CAP_MB_MASK                 GENMASK(15, 12)
  53 #define SYN_CAP_MULTI_BUTTON_NO(ec)     (((ec) & SYN_CAP_MB_MASK) >> 12)
  54 #define SYN_CAP_PRODUCT_ID(ec)          (((ec) & GENMASK(23, 16)) >> 16)
  55 #define SYN_MEXT_CAP_BIT(m)             ((m) & BIT(1))
  56
  57 /*
  58  * The following describes response for the 0x0c query.
  59  *
  60  * byte mask    name                    meaning
  61  * ---- ----    -------                 ------------
  62  * 1    0x01    adjustable threshold    capacitive button sensitivity
  63  *                                      can be adjusted
  64  * 1    0x02    report max              query 0x0d gives max coord reported
  65  * 1    0x04    clearpad                sensor is ClearPad product
  66  * 1    0x08    advanced gesture        not particularly meaningful
  67  * 1    0x10    clickpad bit 0          1-button ClickPad
  68  * 1    0x60    multifinger mode        identifies firmware finger counting
  69  *                                      (not reporting!) algorithm.
  70  *                                      Not particularly meaningful
  71  * 1    0x80    covered pad             W clipped to 14, 15 == pad mostly covered
  72  * 2    0x01    clickpad bit 1          2-button ClickPad
  73  * 2    0x02    deluxe LED controls     touchpad support LED commands
  74  *                                      ala multimedia control bar
  75  * 2    0x04    reduced filtering       firmware does less filtering on
  76  *                                      position data, driver should watch
  77  *                                      for noise.
  78  * 2    0x08    image sensor            image sensor tracks 5 fingers, but only
  79  *                                      reports 2.
  80  * 2    0x01    uniform clickpad        whole clickpad moves instead of being
  81  *                                      hinged at the top.
  82  * 2    0x20    report min              query 0x0f gives min coord reported
  83  */
  84 #define SYN_CAP_CLICKPAD(ex0c)          ((ex0c) & BIT(20)) /* 1-button ClickPad */
  85 #define SYN_CAP_CLICKPAD2BTN(ex0c)      ((ex0c) & BIT(8))  /* 2-button ClickPad */
  86 #define SYN_CAP_MAX_DIMENSIONS(ex0c)    ((ex0c) & BIT(17))
  87 #define SYN_CAP_MIN_DIMENSIONS(ex0c)    ((ex0c) & BIT(13))
  88 #define SYN_CAP_ADV_GESTURE(ex0c)       ((ex0c) & BIT(19))
  89 #define SYN_CAP_REDUCED_FILTERING(ex0c) ((ex0c) & BIT(10))
  90 #define SYN_CAP_IMAGE_SENSOR(ex0c)      ((ex0c) & BIT(11))
  91 #define SYN_CAP_INTERTOUCH(ex0c)        ((ex0c) & BIT(14))
  92
  93 /*
  94  * The following descibes response for the 0x10 query.
  95  *
  96  * byte mask    name                    meaning
  97  * ---- ----    -------                 ------------
  98  * 1    0x01    ext buttons are stick   buttons exported in the extended
  99  *                                      capability are actually meant to be used
 100  *                                      by the tracktick (pass-through).
 101  * 1    0x02    SecurePad               the touchpad is a SecurePad, so it
 102  *                                      contains a built-in fingerprint reader.
 103  * 1    0xe0    more ext count          how many more extented queries are
 104  *                                      available after this one.
 105  * 2    0xff    SecurePad width         the width of the SecurePad fingerprint
 106  *                                      reader.
 107  * 3    0xff    SecurePad height        the height of the SecurePad fingerprint
 108  *                                      reader.
 109  */
 110 #define SYN_CAP_EXT_BUTTONS_STICK(ex10) ((ex10) & BIT(16))
 111 #define SYN_CAP_SECUREPAD(ex10)         ((ex10) & BIT(17))
 112
 113 #define SYN_EXT_BUTTON_STICK_L(eb)      (((eb) & BIT(0)) >> 0)
 114 #define SYN_EXT_BUTTON_STICK_M(eb)      (((eb) & BIT(1)) >> 1)
 115 #define SYN_EXT_BUTTON_STICK_R(eb)      (((eb) & BIT(2)) >> 2)
 116
 117 /* synaptics modes query bits */
 118 #define SYN_MODE_ABSOLUTE(m)            ((m) & BIT(7))
 119 #define SYN_MODE_RATE(m)                ((m) & BIT(6))
 120 #define SYN_MODE_BAUD_SLEEP(m)          ((m) & BIT(3))
 121 #define SYN_MODE_DISABLE_GESTURE(m)     ((m) & BIT(2))
 122 #define SYN_MODE_PACKSIZE(m)            ((m) & BIT(1))
 123 #define SYN_MODE_WMODE(m)               ((m) & BIT(0))
 124
 125 /* synaptics identify query bits */
 126 #define SYN_ID_MODEL(i)                 (((i) & GENMASK(7, 4)) >> 4)
 127 #define SYN_ID_MAJOR(i)                 (((i) & GENMASK(3, 0)) >> 0)
 128 #define SYN_ID_MINOR(i)                 (((i) & GENMASK(23, 16)) >> 16)
 129 #define SYN_ID_FULL(i)                  ((SYN_ID_MAJOR(i) << 8) | SYN_ID_MINOR(i))
 130 #define SYN_ID_IS_SYNAPTICS(i)          (((i) & GENMASK(15, 8)) == 0x004700U)
 131 #define SYN_ID_DISGEST_SUPPORTED(i)     (SYN_ID_MAJOR(i) >= 4)
 132
 133 /* synaptics special commands */
 134 #define SYN_PS_SET_MODE2                0x14
 135 #define SYN_PS_CLIENT_CMD               0x28
 136
 137 /* amount to fuzz position data when touchpad reports reduced filtering */
 138 #define SYN_REDUCED_FILTER_FUZZ         8
 139
 140 /* synaptics packet types */
 141 enum synaptics_pkt_type {
 142         SYN_NEWABS,
 143         SYN_NEWABS_STRICT,
 144         SYN_NEWABS_RELAXED,
 145         SYN_OLDABS,
 146 };
 147
 148 /*
 149  * A structure to describe the state of the touchpad hardware (buttons and pad)
 150  */
 151 struct synaptics_hw_state {
 152         int x;
 153         int y;
 154         int z;
 155         int w;
 156         unsigned int left:1;
 157         unsigned int right:1;
 158         unsigned int middle:1;
 159         unsigned int up:1;
 160         unsigned int down:1;
 161         u8 ext_buttons;
 162         s8 scroll;
 163 };
 164
 165 /* Data read from the touchpad */
 166 struct synaptics_device_info {
 167         u32 model_id;           /* Model-ID */
 168         u32 firmware_id;        /* Firmware-ID */
 169         u32 board_id;           /* Board-ID */
 170         u32 capabilities;       /* Capabilities */
 171         u32 ext_cap;            /* Extended Capabilities */
 172         u32 ext_cap_0c;         /* Ext Caps from 0x0c query */
 173         u32 ext_cap_10;         /* Ext Caps from 0x10 query */
 174         u32 identity;           /* Identification */
 175         u32 x_res, y_res;       /* X/Y resolution in units/mm */
 176         u32 x_max, y_max;       /* Max coordinates (from FW) */
 177         u32 x_min, y_min;       /* Min coordinates (from FW) */
 178 };
 179
 180 struct synaptics_data {
 181         struct synaptics_device_info info;
 182
 183         enum synaptics_pkt_type pkt_type;       /* packet type - old, new, etc */
 184         u8 mode;                                /* current mode byte */
 185         int scroll;
 186
 187         bool absolute_mode;                     /* run in Absolute mode */
 188         bool disable_gesture;                   /* disable gestures */
 189
 190         struct serio *pt_port;                  /* Pass-through serio port */
 191
 192         /*
 193          * Last received Advanced Gesture Mode (AGM) packet. An AGM packet
 194          * contains position data for a second contact, at half resolution.
 195          */
 196         struct synaptics_hw_state agm;
 197         unsigned int agm_count;                 /* finger count reported by agm */
 198
 199         /* ForcePad handling */
 200         unsigned long                           press_start;
 201         bool                                    press;
 202         bool                                    report_press;
 203         bool                                    is_forcepad;
 204 };
 205
 206 void synaptics_module_init(void);
 207 int synaptics_detect(struct psmouse *psmouse, bool set_properties);
 208 int synaptics_init_absolute(struct psmouse *psmouse);
 209 int synaptics_init_relative(struct psmouse *psmouse);
 210 int synaptics_init_smbus(struct psmouse *psmouse);
 211 int synaptics_init(struct psmouse *psmouse);
 212 void synaptics_reset(struct psmouse *psmouse);
 213
 214 #endif /* _SYNAPTICS_H */