drivers/input/mouse/hgpk.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * OLPC HGPK (XO-1) touchpad PS/2 mouse driver
   4  */
   5
   6 #ifndef _HGPK_H
   7 #define _HGPK_H
   8
   9 #define HGPK_GS         0xff       /* The GlideSensor */
  10 #define HGPK_PT         0xcf       /* The PenTablet */
  11
  12 enum hgpk_model_t {
  13         HGPK_MODEL_PREA = 0x0a, /* pre-B1s */
  14         HGPK_MODEL_A = 0x14,    /* found on B1s, PT disabled in hardware */
  15         HGPK_MODEL_B = 0x28,    /* B2s, has capacitance issues */
  16         HGPK_MODEL_C = 0x3c,
  17         HGPK_MODEL_D = 0x50,    /* C1, mass production */
  18 };
  19
  20 enum hgpk_spew_flag {
  21         NO_SPEW,
  22         MAYBE_SPEWING,
  23         SPEW_DETECTED,
  24         RECALIBRATING,
  25 };
  26
  27 #define SPEW_WATCH_COUNT 42  /* at 12ms/packet, this is 1/2 second */
  28
  29 enum hgpk_mode {
  30         HGPK_MODE_MOUSE,
  31         HGPK_MODE_GLIDESENSOR,
  32         HGPK_MODE_PENTABLET,
  33         HGPK_MODE_INVALID
  34 };
  35
  36 struct hgpk_data {
  37         struct psmouse *psmouse;
  38         enum hgpk_mode mode;
  39         bool powered;
  40         enum hgpk_spew_flag spew_flag;
  41         int spew_count, x_tally, y_tally;       /* spew detection */
  42         unsigned long recalib_window;
  43         struct delayed_work recalib_wq;
  44         int abs_x, abs_y;
  45         int dupe_count;
  46         int xbigj, ybigj, xlast, ylast; /* jumpiness detection */
  47         int xsaw_secondary, ysaw_secondary; /* jumpiness detection */
  48 };
  49
  50 #ifdef CONFIG_MOUSE_PS2_OLPC
  51 void hgpk_module_init(void);
  52 int hgpk_detect(struct psmouse *psmouse, bool set_properties);
  53 int hgpk_init(struct psmouse *psmouse);
  54 #else
  55 static inline void hgpk_module_init(void)
  56 {
  57 }
  58 static inline int hgpk_detect(struct psmouse *psmouse, bool set_properties)
  59 {
  60         return -ENODEV;
  61 }
  62 static inline int hgpk_init(struct psmouse *psmouse)
  63 {
  64         return -ENODEV;
  65 }
  66 #endif
  67
  68 #endif