drivers/input/rmi4/rmi_f11.c

   1 /*
   2  * Copyright (c) 2011-2015 Synaptics Incorporated
   3  * Copyright (c) 2011 Unixphere
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/delay.h>
  12 #include <linux/device.h>
  13 #include <linux/input.h>
  14 #include <linux/input/mt.h>
  15 #include <linux/rmi.h>
  16 #include <linux/slab.h>
  17 #include <linux/of.h>
  18 #include "rmi_driver.h"
  19 #include "rmi_2d_sensor.h"
  20
  21 #define F11_MAX_NUM_OF_FINGERS          10
  22 #define F11_MAX_NUM_OF_TOUCH_SHAPES     16
  23
  24 #define FINGER_STATE_MASK       0x03
  25
  26 #define F11_CTRL_SENSOR_MAX_X_POS_OFFSET        6
  27 #define F11_CTRL_SENSOR_MAX_Y_POS_OFFSET        8
  28
  29 #define DEFAULT_XY_MAX 9999
  30 #define DEFAULT_MAX_ABS_MT_PRESSURE 255
  31 #define DEFAULT_MAX_ABS_MT_TOUCH 15
  32 #define DEFAULT_MAX_ABS_MT_ORIENTATION 1
  33 #define DEFAULT_MIN_ABS_MT_TRACKING_ID 1
  34 #define DEFAULT_MAX_ABS_MT_TRACKING_ID 10
  35
  36 /** A note about RMI4 F11 register structure.
  37  *
  38  * The properties for
  39  * a given sensor are described by its query registers.  The number of query
  40  * registers and the layout of their contents are described by the F11 device
  41  * queries as well as the sensor query information.
  42  *
  43  * Similarly, each sensor has control registers that govern its behavior.  The
  44  * size and layout of the control registers for a given sensor can be determined
  45  * by parsing that sensors query registers.
  46  *
  47  * And in a likewise fashion, each sensor has data registers where it reports
  48  * its touch data and other interesting stuff.  The size and layout of a
  49  * sensors data registers must be determined by parsing its query registers.
  50  *
  51  * The short story is that we need to read and parse a lot of query
  52  * registers in order to determine the attributes of a sensor. Then
  53  * we need to use that data to compute the size of the control and data
  54  * registers for sensor.
  55  *
  56  * The end result is that we have a number of structs that aren't used to
  57  * directly generate the input events, but their size, location and contents
  58  * are critical to determining where the data we are interested in lives.
  59  *
  60  * At this time, the driver does not yet comprehend all possible F11
  61  * configuration options, but it should be sufficient to cover 99% of RMI4 F11
  62  * devices currently in the field.
  63  */
  64
  65 /* maximum ABS_MT_POSITION displacement (in mm) */
  66 #define DMAX 10
  67
  68 /**
  69  * @rezero - writing this to the F11 command register will cause the sensor to
  70  * calibrate to the current capacitive state.
  71  */
  72 #define RMI_F11_REZERO  0x01
  73
  74 #define RMI_F11_HAS_QUERY9              (1 << 3)
  75 #define RMI_F11_HAS_QUERY11             (1 << 4)
  76 #define RMI_F11_HAS_QUERY12             (1 << 5)
  77 #define RMI_F11_HAS_QUERY27             (1 << 6)
  78 #define RMI_F11_HAS_QUERY28             (1 << 7)
  79
  80 /** Defs for Query 1 */
  81
  82 #define RMI_F11_NR_FINGERS_MASK 0x07
  83 #define RMI_F11_HAS_REL                 (1 << 3)
  84 #define RMI_F11_HAS_ABS                 (1 << 4)
  85 #define RMI_F11_HAS_GESTURES            (1 << 5)
  86 #define RMI_F11_HAS_SENSITIVITY_ADJ     (1 << 6)
  87 #define RMI_F11_CONFIGURABLE            (1 << 7)
  88
  89 /** Defs for Query 2, 3, and 4. */
  90 #define RMI_F11_NR_ELECTRODES_MASK      0x7F
  91
  92 /** Defs for Query 5 */
  93
  94 #define RMI_F11_ABS_DATA_SIZE_MASK      0x03
  95 #define RMI_F11_HAS_ANCHORED_FINGER     (1 << 2)
  96 #define RMI_F11_HAS_ADJ_HYST            (1 << 3)
  97 #define RMI_F11_HAS_DRIBBLE             (1 << 4)
  98 #define RMI_F11_HAS_BENDING_CORRECTION  (1 << 5)
  99 #define RMI_F11_HAS_LARGE_OBJECT_SUPPRESSION    (1 << 6)
 100 #define RMI_F11_HAS_JITTER_FILTER       (1 << 7)
 101
 102 /** Defs for Query 7 */
 103 #define RMI_F11_HAS_SINGLE_TAP                  (1 << 0)
 104 #define RMI_F11_HAS_TAP_AND_HOLD                (1 << 1)
 105 #define RMI_F11_HAS_DOUBLE_TAP                  (1 << 2)
 106 #define RMI_F11_HAS_EARLY_TAP                   (1 << 3)
 107 #define RMI_F11_HAS_FLICK                       (1 << 4)
 108 #define RMI_F11_HAS_PRESS                       (1 << 5)
 109 #define RMI_F11_HAS_PINCH                       (1 << 6)
 110 #define RMI_F11_HAS_CHIRAL                      (1 << 7)
 111
 112 /** Defs for Query 8 */
 113 #define RMI_F11_HAS_PALM_DET                    (1 << 0)
 114 #define RMI_F11_HAS_ROTATE                      (1 << 1)
 115 #define RMI_F11_HAS_TOUCH_SHAPES                (1 << 2)
 116 #define RMI_F11_HAS_SCROLL_ZONES                (1 << 3)
 117 #define RMI_F11_HAS_INDIVIDUAL_SCROLL_ZONES     (1 << 4)
 118 #define RMI_F11_HAS_MF_SCROLL                   (1 << 5)
 119 #define RMI_F11_HAS_MF_EDGE_MOTION              (1 << 6)
 120 #define RMI_F11_HAS_MF_SCROLL_INERTIA           (1 << 7)
 121
 122 /** Defs for Query 9. */
 123 #define RMI_F11_HAS_PEN                         (1 << 0)
 124 #define RMI_F11_HAS_PROXIMITY                   (1 << 1)
 125 #define RMI_F11_HAS_PALM_DET_SENSITIVITY        (1 << 2)
 126 #define RMI_F11_HAS_SUPPRESS_ON_PALM_DETECT     (1 << 3)
 127 #define RMI_F11_HAS_TWO_PEN_THRESHOLDS          (1 << 4)
 128 #define RMI_F11_HAS_CONTACT_GEOMETRY            (1 << 5)
 129 #define RMI_F11_HAS_PEN_HOVER_DISCRIMINATION    (1 << 6)
 130 #define RMI_F11_HAS_PEN_FILTERS                 (1 << 7)
 131
 132 /** Defs for Query 10. */
 133 #define RMI_F11_NR_TOUCH_SHAPES_MASK            0x1F
 134
 135 /** Defs for Query 11 */
 136
 137 #define RMI_F11_HAS_Z_TUNING                    (1 << 0)
 138 #define RMI_F11_HAS_ALGORITHM_SELECTION         (1 << 1)
 139 #define RMI_F11_HAS_W_TUNING                    (1 << 2)
 140 #define RMI_F11_HAS_PITCH_INFO                  (1 << 3)
 141 #define RMI_F11_HAS_FINGER_SIZE                 (1 << 4)
 142 #define RMI_F11_HAS_SEGMENTATION_AGGRESSIVENESS (1 << 5)
 143 #define RMI_F11_HAS_XY_CLIP                     (1 << 6)
 144 #define RMI_F11_HAS_DRUMMING_FILTER             (1 << 7)
 145
 146 /** Defs for Query 12. */
 147
 148 #define RMI_F11_HAS_GAPLESS_FINGER              (1 << 0)
 149 #define RMI_F11_HAS_GAPLESS_FINGER_TUNING       (1 << 1)
 150 #define RMI_F11_HAS_8BIT_W                      (1 << 2)
 151 #define RMI_F11_HAS_ADJUSTABLE_MAPPING          (1 << 3)
 152 #define RMI_F11_HAS_INFO2                       (1 << 4)
 153 #define RMI_F11_HAS_PHYSICAL_PROPS              (1 << 5)
 154 #define RMI_F11_HAS_FINGER_LIMIT                (1 << 6)
 155 #define RMI_F11_HAS_LINEAR_COEFF                (1 << 7)
 156
 157 /** Defs for Query 13. */
 158
 159 #define RMI_F11_JITTER_WINDOW_MASK              0x1F
 160 #define RMI_F11_JITTER_FILTER_MASK              0x60
 161 #define RMI_F11_JITTER_FILTER_SHIFT             5
 162
 163 /** Defs for Query 14. */
 164 #define RMI_F11_LIGHT_CONTROL_MASK              0x03
 165 #define RMI_F11_IS_CLEAR                        (1 << 2)
 166 #define RMI_F11_CLICKPAD_PROPS_MASK             0x18
 167 #define RMI_F11_CLICKPAD_PROPS_SHIFT            3
 168 #define RMI_F11_MOUSE_BUTTONS_MASK              0x60
 169 #define RMI_F11_MOUSE_BUTTONS_SHIFT             5
 170 #define RMI_F11_HAS_ADVANCED_GESTURES           (1 << 7)
 171
 172 #define RMI_F11_QUERY_SIZE                      4
 173 #define RMI_F11_QUERY_GESTURE_SIZE              2
 174
 175 #define F11_LIGHT_CTL_NONE 0x00
 176 #define F11_LUXPAD         0x01
 177 #define F11_DUAL_MODE      0x02
 178
 179 #define F11_NOT_CLICKPAD     0x00
 180 #define F11_HINGED_CLICKPAD  0x01
 181 #define F11_UNIFORM_CLICKPAD 0x02
 182
 183 /**
 184  * Query registers 1 through 4 are always present.
 185  *
 186  * @nr_fingers - describes the maximum number of fingers the 2-D sensor
 187  * supports.
 188  * @has_rel - the sensor supports relative motion reporting.
 189  * @has_abs - the sensor supports absolute poition reporting.
 190  * @has_gestures - the sensor supports gesture reporting.
 191  * @has_sensitivity_adjust - the sensor supports a global sensitivity
 192  * adjustment.
 193  * @configurable - the sensor supports various configuration options.
 194  * @num_of_x_electrodes -  the maximum number of electrodes the 2-D sensor
 195  * supports on the X axis.
 196  * @num_of_y_electrodes -  the maximum number of electrodes the 2-D sensor
 197  * supports on the Y axis.
 198  * @max_electrodes - the total number of X and Y electrodes that may be
 199  * configured.
 200  *
 201  * Query 5 is present if the has_abs bit is set.
 202  *
 203  * @abs_data_size - describes the format of data reported by the absolute
 204  * data source.  Only one format (the kind used here) is supported at this
 205  * time.
 206  * @has_anchored_finger - then the sensor supports the high-precision second
 207  * finger tracking provided by the manual tracking and motion sensitivity
 208  * options.
 209  * @has_adjust_hyst - the difference between the finger release threshold and
 210  * the touch threshold.
 211  * @has_dribble - the sensor supports the generation of dribble interrupts,
 212  * which may be enabled or disabled with the dribble control bit.
 213  * @has_bending_correction - Bending related data registers 28 and 36, and
 214  * control register 52..57 are present.
 215  * @has_large_object_suppression - control register 58 and data register 28
 216  * exist.
 217  * @has_jitter_filter - query 13 and control 73..76 exist.
 218  *
 219  * Gesture information queries 7 and 8 are present if has_gestures bit is set.
 220  *
 221  * @has_single_tap - a basic single-tap gesture is supported.
 222  * @has_tap_n_hold - tap-and-hold gesture is supported.
 223  * @has_double_tap - double-tap gesture is supported.
 224  * @has_early_tap - early tap is supported and reported as soon as the finger
 225  * lifts for any tap event that could be interpreted as either a single tap
 226  * or as the first tap of a double-tap or tap-and-hold gesture.
 227  * @has_flick - flick detection is supported.
 228  * @has_press - press gesture reporting is supported.
 229  * @has_pinch - pinch gesture detection is supported.
 230  * @has_palm_det - the 2-D sensor notifies the host whenever a large conductive
 231  * object such as a palm or a cheek touches the 2-D sensor.
 232  * @has_rotate - rotation gesture detection is supported.
 233  * @has_touch_shapes - TouchShapes are supported.  A TouchShape is a fixed
 234  * rectangular area on the sensor that behaves like a capacitive button.
 235  * @has_scroll_zones - scrolling areas near the sensor edges are supported.
 236  * @has_individual_scroll_zones - if 1, then 4 scroll zones are supported;
 237  * if 0, then only two are supported.
 238  * @has_mf_scroll - the multifinger_scrolling bit will be set when
 239  * more than one finger is involved in a scrolling action.
 240  *
 241  * Convenience for checking bytes in the gesture info registers.  This is done
 242  * often enough that we put it here to declutter the conditionals
 243  *
 244  * @query7_nonzero - true if none of the query 7 bits are set
 245  * @query8_nonzero - true if none of the query 8 bits are set
 246  *
 247  * Query 9 is present if the has_query9 is set.
 248  *
 249  * @has_pen - detection of a stylus is supported and registers F11_2D_Ctrl20
 250  * and F11_2D_Ctrl21 exist.
 251  * @has_proximity - detection of fingers near the sensor is supported and
 252  * registers F11_2D_Ctrl22 through F11_2D_Ctrl26 exist.
 253  * @has_palm_det_sensitivity -  the sensor supports the palm detect sensitivity
 254  * feature and register F11_2D_Ctrl27 exists.
 255  * @has_two_pen_thresholds - is has_pen is also set, then F11_2D_Ctrl35 exists.
 256  * @has_contact_geometry - the sensor supports the use of contact geometry to
 257  * map absolute X and Y target positions and registers F11_2D_Data18
 258  * through F11_2D_Data27 exist.
 259  *
 260  * Touch shape info (query 10) is present if has_touch_shapes is set.
 261  *
 262  * @nr_touch_shapes - the total number of touch shapes supported.
 263  *
 264  * Query 11 is present if the has_query11 bit is set in query 0.
 265  *
 266  * @has_z_tuning - if set, the sensor supports Z tuning and registers
 267  * F11_2D_Ctrl29 through F11_2D_Ctrl33 exist.
 268  * @has_algorithm_selection - controls choice of noise suppression algorithm
 269  * @has_w_tuning - the sensor supports Wx and Wy scaling and registers
 270  * F11_2D_Ctrl36 through F11_2D_Ctrl39 exist.
 271  * @has_pitch_info - the X and Y pitches of the sensor electrodes can be
 272  * configured and registers F11_2D_Ctrl40 and F11_2D_Ctrl41 exist.
 273  * @has_finger_size -  the default finger width settings for the
 274  * sensor can be configured and registers F11_2D_Ctrl42 through F11_2D_Ctrl44
 275  * exist.
 276  * @has_segmentation_aggressiveness - the sensor’s ability to distinguish
 277  * multiple objects close together can be configured and register F11_2D_Ctrl45
 278  * exists.
 279  * @has_XY_clip -  the inactive outside borders of the sensor can be
 280  * configured and registers F11_2D_Ctrl46 through F11_2D_Ctrl49 exist.
 281  * @has_drumming_filter - the sensor can be configured to distinguish
 282  * between a fast flick and a quick drumming movement and registers
 283  * F11_2D_Ctrl50 and F11_2D_Ctrl51 exist.
 284  *
 285  * Query 12 is present if hasQuery12 bit is set.
 286  *
 287  * @has_gapless_finger - control registers relating to gapless finger are
 288  * present.
 289  * @has_gapless_finger_tuning - additional control and data registers relating
 290  * to gapless finger are present.
 291  * @has_8bit_w - larger W value reporting is supported.
 292  * @has_adjustable_mapping - TBD
 293  * @has_info2 - the general info query14 is present
 294  * @has_physical_props - additional queries describing the physical properties
 295  * of the sensor are present.
 296  * @has_finger_limit - indicates that F11 Ctrl 80 exists.
 297  * @has_linear_coeff - indicates that F11 Ctrl 81 exists.
 298  *
 299  * Query 13 is present if Query 5's has_jitter_filter bit is set.
 300  * @jitter_window_size - used by Design Studio 4.
 301  * @jitter_filter_type - used by Design Studio 4.
 302  *
 303  * Query 14 is present if query 12's has_general_info2 flag is set.
 304  *
 305  * @light_control - Indicates what light/led control features are present, if
 306  * any.
 307  * @is_clear - if set, this is a clear sensor (indicating direct pointing
 308  * application), otherwise it's opaque (indicating indirect pointing).
 309  * @clickpad_props - specifies if this is a clickpad, and if so what sort of
 310  * mechanism it uses
 311  * @mouse_buttons - specifies the number of mouse buttons present (if any).
 312  * @has_advanced_gestures - advanced driver gestures are supported.
 313  */
 314 struct f11_2d_sensor_queries {
 315         /* query1 */
 316         u8 nr_fingers;
 317         bool has_rel;
 318         bool has_abs;
 319         bool has_gestures;
 320         bool has_sensitivity_adjust;
 321         bool configurable;
 322
 323         /* query2 */
 324         u8 nr_x_electrodes;
 325
 326         /* query3 */
 327         u8 nr_y_electrodes;
 328
 329         /* query4 */
 330         u8 max_electrodes;
 331
 332         /* query5 */
 333         u8 abs_data_size;
 334         bool has_anchored_finger;
 335         bool has_adj_hyst;
 336         bool has_dribble;
 337         bool has_bending_correction;
 338         bool has_large_object_suppression;
 339         bool has_jitter_filter;
 340
 341         u8 f11_2d_query6;
 342
 343         /* query 7 */
 344         bool has_single_tap;
 345         bool has_tap_n_hold;
 346         bool has_double_tap;
 347         bool has_early_tap;
 348         bool has_flick;
 349         bool has_press;
 350         bool has_pinch;
 351         bool has_chiral;
 352
 353         bool query7_nonzero;
 354
 355         /* query 8 */
 356         bool has_palm_det;
 357         bool has_rotate;
 358         bool has_touch_shapes;
 359         bool has_scroll_zones;
 360         bool has_individual_scroll_zones;
 361         bool has_mf_scroll;
 362         bool has_mf_edge_motion;
 363         bool has_mf_scroll_inertia;
 364
 365         bool query8_nonzero;
 366
 367         /* Query 9 */
 368         bool has_pen;
 369         bool has_proximity;
 370         bool has_palm_det_sensitivity;
 371         bool has_suppress_on_palm_detect;
 372         bool has_two_pen_thresholds;
 373         bool has_contact_geometry;
 374         bool has_pen_hover_discrimination;
 375         bool has_pen_filters;
 376
 377         /* Query 10 */
 378         u8 nr_touch_shapes;
 379
 380         /* Query 11. */
 381         bool has_z_tuning;
 382         bool has_algorithm_selection;
 383         bool has_w_tuning;
 384         bool has_pitch_info;
 385         bool has_finger_size;
 386         bool has_segmentation_aggressiveness;
 387         bool has_XY_clip;
 388         bool has_drumming_filter;
 389
 390         /* Query 12 */
 391         bool has_gapless_finger;
 392         bool has_gapless_finger_tuning;
 393         bool has_8bit_w;
 394         bool has_adjustable_mapping;
 395         bool has_info2;
 396         bool has_physical_props;
 397         bool has_finger_limit;
 398         bool has_linear_coeff_2;
 399
 400         /* Query 13 */
 401         u8 jitter_window_size;
 402         u8 jitter_filter_type;
 403
 404         /* Query 14 */
 405         u8 light_control;
 406         bool is_clear;
 407         u8 clickpad_props;
 408         u8 mouse_buttons;
 409         bool has_advanced_gestures;
 410
 411         /* Query 15 - 18 */
 412         u16 x_sensor_size_mm;
 413         u16 y_sensor_size_mm;
 414 };
 415
 416 /* Defs for Ctrl0. */
 417 #define RMI_F11_REPORT_MODE_MASK        0x07
 418 #define RMI_F11_ABS_POS_FILT            (1 << 3)
 419 #define RMI_F11_REL_POS_FILT            (1 << 4)
 420 #define RMI_F11_REL_BALLISTICS          (1 << 5)
 421 #define RMI_F11_DRIBBLE                 (1 << 6)
 422 #define RMI_F11_REPORT_BEYOND_CLIP      (1 << 7)
 423
 424 /* Defs for Ctrl1. */
 425 #define RMI_F11_PALM_DETECT_THRESH_MASK 0x0F
 426 #define RMI_F11_MOTION_SENSITIVITY_MASK 0x30
 427 #define RMI_F11_MANUAL_TRACKING         (1 << 6)
 428 #define RMI_F11_MANUAL_TRACKED_FINGER   (1 << 7)
 429
 430 #define RMI_F11_DELTA_X_THRESHOLD       2
 431 #define RMI_F11_DELTA_Y_THRESHOLD       3
 432
 433 #define RMI_F11_CTRL_REG_COUNT          12
 434
 435 struct f11_2d_ctrl {
 436         u8              ctrl0_11[RMI_F11_CTRL_REG_COUNT];
 437         u16             ctrl0_11_address;
 438 };
 439
 440 #define RMI_F11_ABS_BYTES 5
 441 #define RMI_F11_REL_BYTES 2
 442
 443 /* Defs for Data 8 */
 444
 445 #define RMI_F11_SINGLE_TAP              (1 << 0)
 446 #define RMI_F11_TAP_AND_HOLD            (1 << 1)
 447 #define RMI_F11_DOUBLE_TAP              (1 << 2)
 448 #define RMI_F11_EARLY_TAP               (1 << 3)
 449 #define RMI_F11_FLICK                   (1 << 4)
 450 #define RMI_F11_PRESS                   (1 << 5)
 451 #define RMI_F11_PINCH                   (1 << 6)
 452
 453 /* Defs for Data 9 */
 454
 455 #define RMI_F11_PALM_DETECT                     (1 << 0)
 456 #define RMI_F11_ROTATE                          (1 << 1)
 457 #define RMI_F11_SHAPE                           (1 << 2)
 458 #define RMI_F11_SCROLLZONE                      (1 << 3)
 459 #define RMI_F11_GESTURE_FINGER_COUNT_MASK       0x70
 460
 461 /** Handy pointers into our data buffer.
 462  *
 463  * @f_state - start of finger state registers.
 464  * @abs_pos - start of absolute position registers (if present).
 465  * @rel_pos - start of relative data registers (if present).
 466  * @gest_1  - gesture flags (if present).
 467  * @gest_2  - gesture flags & finger count (if present).
 468  * @pinch   - pinch motion register (if present).
 469  * @flick   - flick distance X & Y, flick time (if present).
 470  * @rotate  - rotate motion and finger separation.
 471  * @multi_scroll - chiral deltas for X and Y (if present).
 472  * @scroll_zones - scroll deltas for 4 regions (if present).
 473  */
 474 struct f11_2d_data {
 475         u8      *f_state;
 476         u8      *abs_pos;
 477         s8      *rel_pos;
 478         u8      *gest_1;
 479         u8      *gest_2;
 480         s8      *pinch;
 481         u8      *flick;
 482         u8      *rotate;
 483         u8      *shapes;
 484         s8      *multi_scroll;
 485         s8      *scroll_zones;
 486 };
 487
 488 /** Data pertaining to F11 in general.  For per-sensor data, see struct
 489  * f11_2d_sensor.
 490  *
 491  * @dev_query - F11 device specific query registers.
 492  * @dev_controls - F11 device specific control registers.
 493  * @dev_controls_mutex - lock for the control registers.
 494  * @rezero_wait_ms - if nonzero, upon resume we will wait this many
 495  * milliseconds before rezeroing the sensor(s).  This is useful in systems with
 496  * poor electrical behavior on resume, where the initial calibration of the
 497  * sensor(s) coming out of sleep state may be bogus.
 498  * @sensors - per sensor data structures.
 499  */
 500 struct f11_data {
 501         bool has_query9;
 502         bool has_query11;
 503         bool has_query12;
 504         bool has_query27;
 505         bool has_query28;
 506         bool has_acm;
 507         struct f11_2d_ctrl dev_controls;
 508         struct mutex dev_controls_mutex;
 509         u16 rezero_wait_ms;
 510         struct rmi_2d_sensor sensor;
 511         struct f11_2d_sensor_queries sens_query;
 512         struct f11_2d_data data;
 513         struct rmi_2d_sensor_platform_data sensor_pdata;
 514         unsigned long *abs_mask;
 515         unsigned long *rel_mask;
 516         unsigned long *result_bits;
 517 };
 518
 519 enum f11_finger_state {
 520         F11_NO_FINGER   = 0x00,
 521         F11_PRESENT     = 0x01,
 522         F11_INACCURATE  = 0x02,
 523         F11_RESERVED    = 0x03
 524 };
 525
 526 static void rmi_f11_rel_pos_report(struct f11_data *f11, u8 n_finger)
 527 {
 528         struct rmi_2d_sensor *sensor = &f11->sensor;
 529         struct f11_2d_data *data = &f11->data;
 530         s8 x, y;
 531
 532         x = data->rel_pos[n_finger * RMI_F11_REL_BYTES];
 533         y = data->rel_pos[n_finger * RMI_F11_REL_BYTES + 1];
 534
 535         rmi_2d_sensor_rel_report(sensor, x, y);
 536 }
 537
 538 static void rmi_f11_abs_pos_process(struct f11_data *f11,
 539                                    struct rmi_2d_sensor *sensor,
 540                                    struct rmi_2d_sensor_abs_object *obj,
 541                                    enum f11_finger_state finger_state,
 542                                    u8 n_finger)
 543 {
 544         struct f11_2d_data *data = &f11->data;
 545         u8 *pos_data = &data->abs_pos[n_finger * RMI_F11_ABS_BYTES];
 546         int tool_type = MT_TOOL_FINGER;
 547
 548         switch (finger_state) {
 549         case F11_PRESENT:
 550                 obj->type = RMI_2D_OBJECT_FINGER;
 551                 break;
 552         default:
 553                 obj->type = RMI_2D_OBJECT_NONE;
 554         }
 555
 556         obj->mt_tool = tool_type;
 557         obj->x = (pos_data[0] << 4) | (pos_data[2] & 0x0F);
 558         obj->y = (pos_data[1] << 4) | (pos_data[2] >> 4);
 559         obj->z = pos_data[4];
 560         obj->wx = pos_data[3] & 0x0f;
 561         obj->wy = pos_data[3] >> 4;
 562
 563         rmi_2d_sensor_abs_process(sensor, obj, n_finger);
 564 }
 565
 566 static inline u8 rmi_f11_parse_finger_state(const u8 *f_state, u8 n_finger)
 567 {
 568         return (f_state[n_finger / 4] >> (2 * (n_finger % 4))) &
 569                                                         FINGER_STATE_MASK;
 570 }
 571
 572 static void rmi_f11_finger_handler(struct f11_data *f11,
 573                                    struct rmi_2d_sensor *sensor,
 574                                    unsigned long *irq_bits, int num_irq_regs,
 575                                    int size)
 576 {
 577         const u8 *f_state = f11->data.f_state;
 578         u8 finger_state;
 579         u8 i;
 580         int abs_fingers;
 581         int rel_fingers;
 582         int abs_size = sensor->nbr_fingers * RMI_F11_ABS_BYTES;
 583
 584         int abs_bits = bitmap_and(f11->result_bits, irq_bits, f11->abs_mask,
 585                                   num_irq_regs * 8);
 586         int rel_bits = bitmap_and(f11->result_bits, irq_bits, f11->rel_mask,
 587                                   num_irq_regs * 8);
 588
 589         if (abs_bits) {
 590                 if (abs_size > size)
 591                         abs_fingers = size / RMI_F11_ABS_BYTES;
 592                 else
 593                         abs_fingers = sensor->nbr_fingers;
 594
 595                 for (i = 0; i < abs_fingers; i++) {
 596                         /* Possible of having 4 fingers per f_state register */
 597                         finger_state = rmi_f11_parse_finger_state(f_state, i);
 598                         if (finger_state == F11_RESERVED) {
 599                                 pr_err("Invalid finger state[%d]: 0x%02x", i,
 600                                         finger_state);
 601                                 continue;
 602                         }
 603
 604                         rmi_f11_abs_pos_process(f11, sensor, &sensor->objs[i],
 605                                                         finger_state, i);
 606                 }
 607         }
 608
 609         if (rel_bits) {
 610                 if ((abs_size + sensor->nbr_fingers * RMI_F11_REL_BYTES) > size)
 611                         rel_fingers = (size - abs_size) / RMI_F11_REL_BYTES;
 612                 else
 613                         rel_fingers = sensor->nbr_fingers;
 614
 615                 for (i = 0; i < rel_fingers; i++)
 616                         rmi_f11_rel_pos_report(f11, i);
 617         }
 618
 619         if (abs_bits) {
 620                 /*
 621                  * the absolute part is made in 2 parts to allow the kernel
 622                  * tracking to take place.
 623                  */
 624                 if (sensor->kernel_tracking)
 625                         input_mt_assign_slots(sensor->input,
 626                                               sensor->tracking_slots,
 627                                               sensor->tracking_pos,
 628                                               sensor->nbr_fingers,
 629                                               sensor->dmax);
 630
 631                 for (i = 0; i < abs_fingers; i++) {
 632                         finger_state = rmi_f11_parse_finger_state(f_state, i);
 633                         if (finger_state == F11_RESERVED)
 634                                 /* no need to send twice the error */
 635                                 continue;
 636
 637                         rmi_2d_sensor_abs_report(sensor, &sensor->objs[i], i);
 638                 }
 639
 640                 input_mt_sync_frame(sensor->input);
 641         }
 642 }
 643
 644 static int f11_2d_construct_data(struct f11_data *f11)
 645 {
 646         struct rmi_2d_sensor *sensor = &f11->sensor;
 647         struct f11_2d_sensor_queries *query = &f11->sens_query;
 648         struct f11_2d_data *data = &f11->data;
 649         int i;
 650
 651         sensor->nbr_fingers = (query->nr_fingers == 5 ? 10 :
 652                                 query->nr_fingers + 1);
 653
 654         sensor->pkt_size = DIV_ROUND_UP(sensor->nbr_fingers, 4);
 655
 656         if (query->has_abs) {
 657                 sensor->pkt_size += (sensor->nbr_fingers * 5);
 658                 sensor->attn_size = sensor->pkt_size;
 659         }
 660
 661         if (query->has_rel)
 662                 sensor->pkt_size +=  (sensor->nbr_fingers * 2);
 663
 664         /* Check if F11_2D_Query7 is non-zero */
 665         if (query->query7_nonzero)
 666                 sensor->pkt_size += sizeof(u8);
 667
 668         /* Check if F11_2D_Query7 or F11_2D_Query8 is non-zero */
 669         if (query->query7_nonzero || query->query8_nonzero)
 670                 sensor->pkt_size += sizeof(u8);
 671
 672         if (query->has_pinch || query->has_flick || query->has_rotate) {
 673                 sensor->pkt_size += 3;
 674                 if (!query->has_flick)
 675                         sensor->pkt_size--;
 676                 if (!query->has_rotate)
 677                         sensor->pkt_size--;
 678         }
 679
 680         if (query->has_touch_shapes)
 681                 sensor->pkt_size +=
 682                         DIV_ROUND_UP(query->nr_touch_shapes + 1, 8);
 683
 684         sensor->data_pkt = devm_kzalloc(&sensor->fn->dev, sensor->pkt_size,
 685                                         GFP_KERNEL);
 686         if (!sensor->data_pkt)
 687                 return -ENOMEM;
 688
 689         data->f_state = sensor->data_pkt;
 690         i = DIV_ROUND_UP(sensor->nbr_fingers, 4);
 691
 692         if (query->has_abs) {
 693                 data->abs_pos = &sensor->data_pkt[i];
 694                 i += (sensor->nbr_fingers * RMI_F11_ABS_BYTES);
 695         }
 696
 697         if (query->has_rel) {
 698                 data->rel_pos = &sensor->data_pkt[i];
 699                 i += (sensor->nbr_fingers * RMI_F11_REL_BYTES);
 700         }
 701
 702         if (query->query7_nonzero) {
 703                 data->gest_1 = &sensor->data_pkt[i];
 704                 i++;
 705         }
 706
 707         if (query->query7_nonzero || query->query8_nonzero) {
 708                 data->gest_2 = &sensor->data_pkt[i];
 709                 i++;
 710         }
 711
 712         if (query->has_pinch) {
 713                 data->pinch = &sensor->data_pkt[i];
 714                 i++;
 715         }
 716
 717         if (query->has_flick) {
 718                 if (query->has_pinch) {
 719                         data->flick = data->pinch;
 720                         i += 2;
 721                 } else {
 722                         data->flick = &sensor->data_pkt[i];
 723                         i += 3;
 724                 }
 725         }
 726
 727         if (query->has_rotate) {
 728                 if (query->has_flick) {
 729                         data->rotate = data->flick + 1;
 730                 } else {
 731                         data->rotate = &sensor->data_pkt[i];
 732                         i += 2;
 733                 }
 734         }
 735
 736         if (query->has_touch_shapes)
 737                 data->shapes = &sensor->data_pkt[i];
 738
 739         return 0;
 740 }
 741
 742 static int f11_read_control_regs(struct rmi_function *fn,
 743                                 struct f11_2d_ctrl *ctrl, u16 ctrl_base_addr) {
 744         struct rmi_device *rmi_dev = fn->rmi_dev;
 745         int error = 0;
 746
 747         ctrl->ctrl0_11_address = ctrl_base_addr;
 748         error = rmi_read_block(rmi_dev, ctrl_base_addr, ctrl->ctrl0_11,
 749                                 RMI_F11_CTRL_REG_COUNT);
 750         if (error < 0) {
 751                 dev_err(&fn->dev, "Failed to read ctrl0, code: %d.\n", error);
 752                 return error;
 753         }
 754
 755         return 0;
 756 }
 757
 758 static int f11_write_control_regs(struct rmi_function *fn,
 759                                         struct f11_2d_sensor_queries *query,
 760                                         struct f11_2d_ctrl *ctrl,
 761                                         u16 ctrl_base_addr)
 762 {
 763         struct rmi_device *rmi_dev = fn->rmi_dev;
 764         int error;
 765
 766         error = rmi_write_block(rmi_dev, ctrl_base_addr, ctrl->ctrl0_11,
 767                                 RMI_F11_CTRL_REG_COUNT);
 768         if (error < 0)
 769                 return error;
 770
 771         return 0;
 772 }
 773
 774 static int rmi_f11_get_query_parameters(struct rmi_device *rmi_dev,
 775                         struct f11_data *f11,
 776                         struct f11_2d_sensor_queries *sensor_query,
 777                         u16 query_base_addr)
 778 {
 779         int query_size;
 780         int rc;
 781         u8 query_buf[RMI_F11_QUERY_SIZE];
 782         bool has_query36 = false;
 783
 784         rc = rmi_read_block(rmi_dev, query_base_addr, query_buf,
 785                                 RMI_F11_QUERY_SIZE);
 786         if (rc < 0)
 787                 return rc;
 788
 789         sensor_query->nr_fingers = query_buf[0] & RMI_F11_NR_FINGERS_MASK;
 790         sensor_query->has_rel = !!(query_buf[0] & RMI_F11_HAS_REL);
 791         sensor_query->has_abs = !!(query_buf[0] & RMI_F11_HAS_ABS);
 792         sensor_query->has_gestures = !!(query_buf[0] & RMI_F11_HAS_GESTURES);
 793         sensor_query->has_sensitivity_adjust =
 794                 !!(query_buf[0] & RMI_F11_HAS_SENSITIVITY_ADJ);
 795         sensor_query->configurable = !!(query_buf[0] & RMI_F11_CONFIGURABLE);
 796
 797         sensor_query->nr_x_electrodes =
 798                                 query_buf[1] & RMI_F11_NR_ELECTRODES_MASK;
 799         sensor_query->nr_y_electrodes =
 800                                 query_buf[2] & RMI_F11_NR_ELECTRODES_MASK;
 801         sensor_query->max_electrodes =
 802                                 query_buf[3] & RMI_F11_NR_ELECTRODES_MASK;
 803
 804         query_size = RMI_F11_QUERY_SIZE;
 805
 806         if (sensor_query->has_abs) {
 807                 rc = rmi_read(rmi_dev, query_base_addr + query_size, query_buf);
 808                 if (rc < 0)
 809                         return rc;
 810
 811                 sensor_query->abs_data_size =
 812                         query_buf[0] & RMI_F11_ABS_DATA_SIZE_MASK;
 813                 sensor_query->has_anchored_finger =
 814                         !!(query_buf[0] & RMI_F11_HAS_ANCHORED_FINGER);
 815                 sensor_query->has_adj_hyst =
 816                         !!(query_buf[0] & RMI_F11_HAS_ADJ_HYST);
 817                 sensor_query->has_dribble =
 818                         !!(query_buf[0] & RMI_F11_HAS_DRIBBLE);
 819                 sensor_query->has_bending_correction =
 820                         !!(query_buf[0] & RMI_F11_HAS_BENDING_CORRECTION);
 821                 sensor_query->has_large_object_suppression =
 822                         !!(query_buf[0] & RMI_F11_HAS_LARGE_OBJECT_SUPPRESSION);
 823                 sensor_query->has_jitter_filter =
 824                         !!(query_buf[0] & RMI_F11_HAS_JITTER_FILTER);
 825                 query_size++;
 826         }
 827
 828         if (sensor_query->has_rel) {
 829                 rc = rmi_read(rmi_dev, query_base_addr + query_size,
 830                                         &sensor_query->f11_2d_query6);
 831                 if (rc < 0)
 832                         return rc;
 833                 query_size++;
 834         }
 835
 836         if (sensor_query->has_gestures) {
 837                 rc = rmi_read_block(rmi_dev, query_base_addr + query_size,
 838                                         query_buf, RMI_F11_QUERY_GESTURE_SIZE);
 839                 if (rc < 0)
 840                         return rc;
 841
 842                 sensor_query->has_single_tap =
 843                         !!(query_buf[0] & RMI_F11_HAS_SINGLE_TAP);
 844                 sensor_query->has_tap_n_hold =
 845                         !!(query_buf[0] & RMI_F11_HAS_TAP_AND_HOLD);
 846                 sensor_query->has_double_tap =
 847                         !!(query_buf[0] & RMI_F11_HAS_DOUBLE_TAP);
 848                 sensor_query->has_early_tap =
 849                         !!(query_buf[0] & RMI_F11_HAS_EARLY_TAP);
 850                 sensor_query->has_flick =
 851                         !!(query_buf[0] & RMI_F11_HAS_FLICK);
 852                 sensor_query->has_press =
 853                         !!(query_buf[0] & RMI_F11_HAS_PRESS);
 854                 sensor_query->has_pinch =
 855                         !!(query_buf[0] & RMI_F11_HAS_PINCH);
 856                 sensor_query->has_chiral =
 857                         !!(query_buf[0] & RMI_F11_HAS_CHIRAL);
 858
 859                 /* query 8 */
 860                 sensor_query->has_palm_det =
 861                         !!(query_buf[1] & RMI_F11_HAS_PALM_DET);
 862                 sensor_query->has_rotate =
 863                         !!(query_buf[1] & RMI_F11_HAS_ROTATE);
 864                 sensor_query->has_touch_shapes =
 865                         !!(query_buf[1] & RMI_F11_HAS_TOUCH_SHAPES);
 866                 sensor_query->has_scroll_zones =
 867                         !!(query_buf[1] & RMI_F11_HAS_SCROLL_ZONES);
 868                 sensor_query->has_individual_scroll_zones =
 869                         !!(query_buf[1] & RMI_F11_HAS_INDIVIDUAL_SCROLL_ZONES);
 870                 sensor_query->has_mf_scroll =
 871                         !!(query_buf[1] & RMI_F11_HAS_MF_SCROLL);
 872                 sensor_query->has_mf_edge_motion =
 873                         !!(query_buf[1] & RMI_F11_HAS_MF_EDGE_MOTION);
 874                 sensor_query->has_mf_scroll_inertia =
 875                         !!(query_buf[1] & RMI_F11_HAS_MF_SCROLL_INERTIA);
 876
 877                 sensor_query->query7_nonzero = !!(query_buf[0]);
 878                 sensor_query->query8_nonzero = !!(query_buf[1]);
 879
 880                 query_size += 2;
 881         }
 882
 883         if (f11->has_query9) {
 884                 rc = rmi_read(rmi_dev, query_base_addr + query_size, query_buf);
 885                 if (rc < 0)
 886                         return rc;
 887
 888                 sensor_query->has_pen =
 889                         !!(query_buf[0] & RMI_F11_HAS_PEN);
 890                 sensor_query->has_proximity =
 891                         !!(query_buf[0] & RMI_F11_HAS_PROXIMITY);
 892                 sensor_query->has_palm_det_sensitivity =
 893                         !!(query_buf[0] & RMI_F11_HAS_PALM_DET_SENSITIVITY);
 894                 sensor_query->has_suppress_on_palm_detect =
 895                         !!(query_buf[0] & RMI_F11_HAS_SUPPRESS_ON_PALM_DETECT);
 896                 sensor_query->has_two_pen_thresholds =
 897                         !!(query_buf[0] & RMI_F11_HAS_TWO_PEN_THRESHOLDS);
 898                 sensor_query->has_contact_geometry =
 899                         !!(query_buf[0] & RMI_F11_HAS_CONTACT_GEOMETRY);
 900                 sensor_query->has_pen_hover_discrimination =
 901                         !!(query_buf[0] & RMI_F11_HAS_PEN_HOVER_DISCRIMINATION);
 902                 sensor_query->has_pen_filters =
 903                         !!(query_buf[0] & RMI_F11_HAS_PEN_FILTERS);
 904
 905                 query_size++;
 906         }
 907
 908         if (sensor_query->has_touch_shapes) {
 909                 rc = rmi_read(rmi_dev, query_base_addr + query_size, query_buf);
 910                 if (rc < 0)
 911                         return rc;
 912
 913                 sensor_query->nr_touch_shapes = query_buf[0] &
 914                                 RMI_F11_NR_TOUCH_SHAPES_MASK;
 915
 916                 query_size++;
 917         }
 918
 919         if (f11->has_query11) {
 920                 rc = rmi_read(rmi_dev, query_base_addr + query_size, query_buf);
 921                 if (rc < 0)
 922                         return rc;
 923
 924                 sensor_query->has_z_tuning =
 925                         !!(query_buf[0] & RMI_F11_HAS_Z_TUNING);
 926                 sensor_query->has_algorithm_selection =
 927                         !!(query_buf[0] & RMI_F11_HAS_ALGORITHM_SELECTION);
 928                 sensor_query->has_w_tuning =
 929                         !!(query_buf[0] & RMI_F11_HAS_W_TUNING);
 930                 sensor_query->has_pitch_info =
 931                         !!(query_buf[0] & RMI_F11_HAS_PITCH_INFO);
 932                 sensor_query->has_finger_size =
 933                         !!(query_buf[0] & RMI_F11_HAS_FINGER_SIZE);
 934                 sensor_query->has_segmentation_aggressiveness =
 935                         !!(query_buf[0] &
 936                                 RMI_F11_HAS_SEGMENTATION_AGGRESSIVENESS);
 937                 sensor_query->has_XY_clip =
 938                         !!(query_buf[0] & RMI_F11_HAS_XY_CLIP);
 939                 sensor_query->has_drumming_filter =
 940                         !!(query_buf[0] & RMI_F11_HAS_DRUMMING_FILTER);
 941
 942                 query_size++;
 943         }
 944
 945         if (f11->has_query12) {
 946                 rc = rmi_read(rmi_dev, query_base_addr + query_size, query_buf);
 947                 if (rc < 0)
 948                         return rc;
 949
 950                 sensor_query->has_gapless_finger =
 951                         !!(query_buf[0] & RMI_F11_HAS_GAPLESS_FINGER);
 952                 sensor_query->has_gapless_finger_tuning =
 953                         !!(query_buf[0] & RMI_F11_HAS_GAPLESS_FINGER_TUNING);
 954                 sensor_query->has_8bit_w =
 955                         !!(query_buf[0] & RMI_F11_HAS_8BIT_W);
 956                 sensor_query->has_adjustable_mapping =
 957                         !!(query_buf[0] & RMI_F11_HAS_ADJUSTABLE_MAPPING);
 958                 sensor_query->has_info2 =
 959                         !!(query_buf[0] & RMI_F11_HAS_INFO2);
 960                 sensor_query->has_physical_props =
 961                         !!(query_buf[0] & RMI_F11_HAS_PHYSICAL_PROPS);
 962                 sensor_query->has_finger_limit =
 963                         !!(query_buf[0] & RMI_F11_HAS_FINGER_LIMIT);
 964                 sensor_query->has_linear_coeff_2 =
 965                         !!(query_buf[0] & RMI_F11_HAS_LINEAR_COEFF);
 966
 967                 query_size++;
 968         }
 969
 970         if (sensor_query->has_jitter_filter) {
 971                 rc = rmi_read(rmi_dev, query_base_addr + query_size, query_buf);
 972                 if (rc < 0)
 973                         return rc;
 974
 975                 sensor_query->jitter_window_size = query_buf[0] &
 976                         RMI_F11_JITTER_WINDOW_MASK;
 977                 sensor_query->jitter_filter_type = (query_buf[0] &
 978                         RMI_F11_JITTER_FILTER_MASK) >>
 979                         RMI_F11_JITTER_FILTER_SHIFT;
 980
 981                 query_size++;
 982         }
 983
 984         if (sensor_query->has_info2) {
 985                 rc = rmi_read(rmi_dev, query_base_addr + query_size, query_buf);
 986                 if (rc < 0)
 987                         return rc;
 988
 989                 sensor_query->light_control =
 990                         query_buf[0] & RMI_F11_LIGHT_CONTROL_MASK;
 991                 sensor_query->is_clear =
 992                         !!(query_buf[0] & RMI_F11_IS_CLEAR);
 993                 sensor_query->clickpad_props =
 994                         (query_buf[0] & RMI_F11_CLICKPAD_PROPS_MASK) >>
 995                         RMI_F11_CLICKPAD_PROPS_SHIFT;
 996                 sensor_query->mouse_buttons =
 997                         (query_buf[0] & RMI_F11_MOUSE_BUTTONS_MASK) >>
 998                         RMI_F11_MOUSE_BUTTONS_SHIFT;
 999                 sensor_query->has_advanced_gestures =
1000                         !!(query_buf[0] & RMI_F11_HAS_ADVANCED_GESTURES);
1001
1002                 query_size++;
1003         }
1004
1005         if (sensor_query->has_physical_props) {
1006                 rc = rmi_read_block(rmi_dev, query_base_addr
1007                         + query_size, query_buf, 4);
1008                 if (rc < 0)
1009                         return rc;
1010
1011                 sensor_query->x_sensor_size_mm =
1012                         (query_buf[0] | (query_buf[1] << 8)) / 10;
1013                 sensor_query->y_sensor_size_mm =
1014                         (query_buf[2] | (query_buf[3] << 8)) / 10;
1015
1016                 /*
1017                  * query 15 - 18 contain the size of the sensor
1018                  * and query 19 - 26 contain bezel dimensions
1019                  */
1020                 query_size += 12;
1021         }
1022
1023         if (f11->has_query27)
1024                 ++query_size;
1025
1026         if (f11->has_query28) {
1027                 rc = rmi_read(rmi_dev, query_base_addr + query_size,
1028                                 query_buf);
1029                 if (rc < 0)
1030                         return rc;
1031
1032                 has_query36 = !!(query_buf[0] & BIT(6));
1033         }
1034
1035         if (has_query36) {
1036                 query_size += 2;
1037                 rc = rmi_read(rmi_dev, query_base_addr + query_size,
1038                                 query_buf);
1039                 if (rc < 0)
1040                         return rc;
1041
1042                 if (!!(query_buf[0] & BIT(5)))
1043                         f11->has_acm = true;
1044         }
1045
1046         return query_size;
1047 }
1048
1049 static int rmi_f11_initialize(struct rmi_function *fn)
1050 {
1051         struct rmi_device *rmi_dev = fn->rmi_dev;
1052         struct f11_data *f11;
1053         struct f11_2d_ctrl *ctrl;
1054         u8 query_offset;
1055         u16 query_base_addr;
1056         u16 control_base_addr;
1057         u16 max_x_pos, max_y_pos;
1058         int rc;
1059         const struct rmi_device_platform_data *pdata =
1060                                 rmi_get_platform_data(rmi_dev);
1061         struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev);
1062         struct rmi_2d_sensor *sensor;
1063         u8 buf;
1064         int mask_size;
1065
1066         rmi_dbg(RMI_DEBUG_FN, &fn->dev, "Initializing F11 values.\n");
1067
1068         mask_size = BITS_TO_LONGS(drvdata->irq_count) * sizeof(unsigned long);
1069
1070         /*
1071         ** init instance data, fill in values and create any sysfs files
1072         */
1073         f11 = devm_kzalloc(&fn->dev, sizeof(struct f11_data) + mask_size * 3,
1074                         GFP_KERNEL);
1075         if (!f11)
1076                 return -ENOMEM;
1077
1078         if (fn->dev.of_node) {
1079                 rc = rmi_2d_sensor_of_probe(&fn->dev, &f11->sensor_pdata);
1080                 if (rc)
1081                         return rc;
1082         } else {
1083                 f11->sensor_pdata = pdata->sensor_pdata;
1084         }
1085
1086         f11->rezero_wait_ms = f11->sensor_pdata.rezero_wait;
1087
1088         f11->abs_mask = (unsigned long *)((char *)f11
1089                         + sizeof(struct f11_data));
1090         f11->rel_mask = (unsigned long *)((char *)f11
1091                         + sizeof(struct f11_data) + mask_size);
1092         f11->result_bits = (unsigned long *)((char *)f11
1093                         + sizeof(struct f11_data) + mask_size * 2);
1094
1095         set_bit(fn->irq_pos, f11->abs_mask);
1096         set_bit(fn->irq_pos + 1, f11->rel_mask);
1097
1098         query_base_addr = fn->fd.query_base_addr;
1099         control_base_addr = fn->fd.control_base_addr;
1100
1101         rc = rmi_read(rmi_dev, query_base_addr, &buf);
1102         if (rc < 0)
1103                 return rc;
1104
1105         f11->has_query9 = !!(buf & RMI_F11_HAS_QUERY9);
1106         f11->has_query11 = !!(buf & RMI_F11_HAS_QUERY11);
1107         f11->has_query12 = !!(buf & RMI_F11_HAS_QUERY12);
1108         f11->has_query27 = !!(buf & RMI_F11_HAS_QUERY27);
1109         f11->has_query28 = !!(buf & RMI_F11_HAS_QUERY28);
1110
1111         query_offset = (query_base_addr + 1);
1112         sensor = &f11->sensor;
1113         sensor->fn = fn;
1114
1115         rc = rmi_f11_get_query_parameters(rmi_dev, f11,
1116                         &f11->sens_query, query_offset);
1117         if (rc < 0)
1118                 return rc;
1119         query_offset += rc;
1120
1121         rc = f11_read_control_regs(fn, &f11->dev_controls,
1122                         control_base_addr);
1123         if (rc < 0) {
1124                 dev_err(&fn->dev,
1125                         "Failed to read F11 control params.\n");
1126                 return rc;
1127         }
1128
1129         if (f11->sens_query.has_info2) {
1130                 if (f11->sens_query.is_clear)
1131                         f11->sensor.sensor_type = rmi_sensor_touchscreen;
1132                 else
1133                         f11->sensor.sensor_type = rmi_sensor_touchpad;
1134         }
1135
1136         sensor->report_abs = f11->sens_query.has_abs;
1137
1138         sensor->axis_align =
1139                 f11->sensor_pdata.axis_align;
1140
1141         sensor->topbuttonpad = f11->sensor_pdata.topbuttonpad;
1142         sensor->kernel_tracking = f11->sensor_pdata.kernel_tracking;
1143         sensor->dmax = f11->sensor_pdata.dmax;
1144         sensor->dribble = f11->sensor_pdata.dribble;
1145         sensor->palm_detect = f11->sensor_pdata.palm_detect;
1146
1147         if (f11->sens_query.has_physical_props) {
1148                 sensor->x_mm = f11->sens_query.x_sensor_size_mm;
1149                 sensor->y_mm = f11->sens_query.y_sensor_size_mm;
1150         } else {
1151                 sensor->x_mm = f11->sensor_pdata.x_mm;
1152                 sensor->y_mm = f11->sensor_pdata.y_mm;
1153         }
1154
1155         if (sensor->sensor_type == rmi_sensor_default)
1156                 sensor->sensor_type =
1157                         f11->sensor_pdata.sensor_type;
1158
1159         sensor->report_abs = sensor->report_abs
1160                 && !(f11->sensor_pdata.disable_report_mask
1161                         & RMI_F11_DISABLE_ABS_REPORT);
1162
1163         if (!sensor->report_abs)
1164                 /*
1165                  * If device doesn't have abs or if it has been disables
1166                  * fallback to reporting rel data.
1167                  */
1168                 sensor->report_rel = f11->sens_query.has_rel;
1169
1170         rc = rmi_read_block(rmi_dev,
1171                 control_base_addr + F11_CTRL_SENSOR_MAX_X_POS_OFFSET,
1172                 (u8 *)&max_x_pos, sizeof(max_x_pos));
1173         if (rc < 0)
1174                 return rc;
1175
1176         rc = rmi_read_block(rmi_dev,
1177                 control_base_addr + F11_CTRL_SENSOR_MAX_Y_POS_OFFSET,
1178                 (u8 *)&max_y_pos, sizeof(max_y_pos));
1179         if (rc < 0)
1180                 return rc;
1181
1182         sensor->max_x = max_x_pos;
1183         sensor->max_y = max_y_pos;
1184
1185         rc = f11_2d_construct_data(f11);
1186         if (rc < 0)
1187                 return rc;
1188
1189         if (f11->has_acm)
1190                 f11->sensor.attn_size += f11->sensor.nbr_fingers * 2;
1191
1192         /* allocate the in-kernel tracking buffers */
1193         sensor->tracking_pos = devm_kcalloc(&fn->dev,
1194                         sensor->nbr_fingers, sizeof(struct input_mt_pos),
1195                         GFP_KERNEL);
1196         sensor->tracking_slots = devm_kcalloc(&fn->dev,
1197                         sensor->nbr_fingers, sizeof(int), GFP_KERNEL);
1198         sensor->objs = devm_kcalloc(&fn->dev,
1199                         sensor->nbr_fingers,
1200                         sizeof(struct rmi_2d_sensor_abs_object),
1201                         GFP_KERNEL);
1202         if (!sensor->tracking_pos || !sensor->tracking_slots || !sensor->objs)
1203                 return -ENOMEM;
1204
1205         ctrl = &f11->dev_controls;
1206         if (sensor->axis_align.delta_x_threshold)
1207                 ctrl->ctrl0_11[RMI_F11_DELTA_X_THRESHOLD] =
1208                         sensor->axis_align.delta_x_threshold;
1209
1210         if (sensor->axis_align.delta_y_threshold)
1211                 ctrl->ctrl0_11[RMI_F11_DELTA_Y_THRESHOLD] =
1212                         sensor->axis_align.delta_y_threshold;
1213
1214         if (f11->sens_query.has_dribble) {
1215                 switch (sensor->dribble) {
1216                 case RMI_REG_STATE_OFF:
1217                         ctrl->ctrl0_11[0] &= ~BIT(6);
1218                         break;
1219                 case RMI_REG_STATE_ON:
1220                         ctrl->ctrl0_11[0] |= BIT(6);
1221                         break;
1222                 case RMI_REG_STATE_DEFAULT:
1223                 default:
1224                         break;
1225                 }
1226         }
1227
1228         if (f11->sens_query.has_palm_det) {
1229                 switch (sensor->palm_detect) {
1230                 case RMI_REG_STATE_OFF:
1231                         ctrl->ctrl0_11[11] &= ~BIT(0);
1232                         break;
1233                 case RMI_REG_STATE_ON:
1234                         ctrl->ctrl0_11[11] |= BIT(0);
1235                         break;
1236                 case RMI_REG_STATE_DEFAULT:
1237                 default:
1238                         break;
1239                 }
1240         }
1241
1242         rc = f11_write_control_regs(fn, &f11->sens_query,
1243                            &f11->dev_controls, fn->fd.query_base_addr);
1244         if (rc)
1245                 dev_warn(&fn->dev, "Failed to write control registers\n");
1246
1247         mutex_init(&f11->dev_controls_mutex);
1248
1249         dev_set_drvdata(&fn->dev, f11);
1250
1251         return 0;
1252 }
1253
1254 static int rmi_f11_config(struct rmi_function *fn)
1255 {
1256         struct f11_data *f11 = dev_get_drvdata(&fn->dev);
1257         struct rmi_driver *drv = fn->rmi_dev->driver;
1258         struct rmi_2d_sensor *sensor = &f11->sensor;
1259         int rc;
1260
1261         if (!sensor->report_abs)
1262                 drv->clear_irq_bits(fn->rmi_dev, f11->abs_mask);
1263         else
1264                 drv->set_irq_bits(fn->rmi_dev, f11->abs_mask);
1265
1266         if (!sensor->report_rel)
1267                 drv->clear_irq_bits(fn->rmi_dev, f11->rel_mask);
1268         else
1269                 drv->set_irq_bits(fn->rmi_dev, f11->rel_mask);
1270
1271         rc = f11_write_control_regs(fn, &f11->sens_query,
1272                            &f11->dev_controls, fn->fd.query_base_addr);
1273         if (rc < 0)
1274                 return rc;
1275
1276         return 0;
1277 }
1278
1279 static int rmi_f11_attention(struct rmi_function *fn, unsigned long *irq_bits)
1280 {
1281         struct rmi_device *rmi_dev = fn->rmi_dev;
1282         struct rmi_driver_data *drvdata = dev_get_drvdata(&rmi_dev->dev);
1283         struct f11_data *f11 = dev_get_drvdata(&fn->dev);
1284         u16 data_base_addr = fn->fd.data_base_addr;
1285         int error;
1286         int valid_bytes = f11->sensor.pkt_size;
1287
1288         if (drvdata->attn_data.data) {
1289                 /*
1290                  * The valid data in the attention report is less then
1291                  * expected. Only process the complete fingers.
1292                  */
1293                 if (f11->sensor.attn_size > drvdata->attn_data.size)
1294                         valid_bytes = drvdata->attn_data.size;
1295                 else
1296                         valid_bytes = f11->sensor.attn_size;
1297                 memcpy(f11->sensor.data_pkt, drvdata->attn_data.data,
1298                         valid_bytes);
1299                 drvdata->attn_data.data += f11->sensor.attn_size;
1300                 drvdata->attn_data.size -= f11->sensor.attn_size;
1301         } else {
1302                 error = rmi_read_block(rmi_dev,
1303                                 data_base_addr, f11->sensor.data_pkt,
1304                                 f11->sensor.pkt_size);
1305                 if (error < 0)
1306                         return error;
1307         }
1308
1309         rmi_f11_finger_handler(f11, &f11->sensor, irq_bits,
1310                                 drvdata->num_of_irq_regs, valid_bytes);
1311
1312         return 0;
1313 }
1314
1315 static int rmi_f11_resume(struct rmi_function *fn)
1316 {
1317         struct f11_data *f11 = dev_get_drvdata(&fn->dev);
1318         int error;
1319
1320         rmi_dbg(RMI_DEBUG_FN, &fn->dev, "Resuming...\n");
1321         if (!f11->rezero_wait_ms)
1322                 return 0;
1323
1324         mdelay(f11->rezero_wait_ms);
1325
1326         error = rmi_write(fn->rmi_dev, fn->fd.command_base_addr,
1327                                 RMI_F11_REZERO);
1328         if (error) {
1329                 dev_err(&fn->dev,
1330                         "%s: failed to issue rezero command, error = %d.",
1331                         __func__, error);
1332                 return error;
1333         }
1334
1335         return 0;
1336 }
1337
1338 static int rmi_f11_probe(struct rmi_function *fn)
1339 {
1340         int error;
1341         struct f11_data *f11;
1342
1343         error = rmi_f11_initialize(fn);
1344         if (error)
1345                 return error;
1346
1347         f11 = dev_get_drvdata(&fn->dev);
1348         error = rmi_2d_sensor_configure_input(fn, &f11->sensor);
1349         if (error)
1350                 return error;
1351
1352         return 0;
1353 }
1354
1355 struct rmi_function_handler rmi_f11_handler = {
1356         .driver = {
1357                 .name   = "rmi4_f11",
1358         },
1359         .func           = 0x11,
1360         .probe          = rmi_f11_probe,
1361         .config         = rmi_f11_config,
1362         .attention      = rmi_f11_attention,
1363         .resume         = rmi_f11_resume,
1364 };