/*      $NetBSD: btnmgr.c,v 1.31 2021/08/07 16:19:11 thorpej Exp $      */

/*-
* Copyright (c) 1999
*         Shin Takemura and PocketBSD Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the PocketBSD project
*      and its contributors.
* 4. Neither the name of the project nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: btnmgr.c,v 1.31 2021/08/07 16:19:11 thorpej Exp $");

#ifdef _KERNEL_OPT
#include "opt_btnmgr.h"
#include "opt_wsdisplay_compat.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/kernel.h>

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wskbdvar.h>
#include <dev/wscons/wsksymdef.h>
#ifdef WSDISPLAY_COMPAT_RAWKBD
#include <dev/hpc/pckbd_encode.h>
#endif

#include <sys/bus.h>
#include <machine/autoconf.h>
#include <machine/config_hook.h>

#ifdef BTNMGRDEBUG
#ifndef BTNMGRDEBUG_CONF
#define BTNMGRDEBUG_CONF 0
#endif
int     btnmgr_debug = BTNMGRDEBUG_CONF;
#define DPRINTF(arg) if (btnmgr_debug) printf arg;
#define DPRINTFN(n, arg) if (btnmgr_debug > (n)) printf arg;
#else
#define DPRINTF(arg)
#define DPRINTFN(n, arg)
#endif

struct btnmgr_softc {
       config_hook_tag sc_hook_tag;
       int sc_enabled;
       device_t sc_wskbddev;
#ifdef WSDISPLAY_COMPAT_RAWKBD
       int sc_rawkbd;
#endif
};

int btnmgrmatch(device_t, cfdata_t, void *);
void btnmgrattach(device_t, device_t, void *);
const char *btnmgr_name(long);
static int btnmgr_hook(void *, int, long, void *);

/*
* global/static data
*/
CFATTACH_DECL_NEW(btnmgr, sizeof(struct btnmgr_softc),
   btnmgrmatch, btnmgrattach, NULL, NULL);

#ifdef notyet
dev_type_open(btnmgropen);
dev_type_close(btnmgrclose);
dev_type_read(btnmgrread);
dev_type_write(btnmgrwrite);
dev_type_ioctl(btnmgrioctl);

const struct cdevsw btnmgr_cdevsw = {
       .d_open = btnmgropen,
       .d_close = btnmgrclose,
       .d_read = btnmgrread,
       .d_write = btnmgrwrite,
       .d_ioctl = btnmgrioctl,
       .d_stop = nostop,
       .d_tty = notty,
       .d_poll = nopoll,
       .d_mmap = nommap,
       .d_kqfilter = nokqfilter,
       .d_discard = nodiscard,
       .d_flag = 0
};
#endif /* notyet */

/* wskbd accessopts */
int     btnmgr_wskbd_enable(void *, int);
void    btnmgr_wskbd_set_leds(void *, int);
int     btnmgr_wskbd_ioctl(void *, u_long, void *, int, struct lwp *);

const struct wskbd_accessops btnmgr_wskbd_accessops = {
       btnmgr_wskbd_enable,
       btnmgr_wskbd_set_leds,
       btnmgr_wskbd_ioctl,
};

/* button config: index by button event id */
static const struct {
       int  kevent;
       int  keycode;
       const char *name;
} button_config[] = {
       /* id                                   kevent keycode name     */
       [CONFIG_HOOK_BUTTONEVENT_POWER] =       { 0,   0, "Power"       },
       [CONFIG_HOOK_BUTTONEVENT_OK] =          { 1,  28, "OK"          },
       [CONFIG_HOOK_BUTTONEVENT_CANCEL] =      { 1,   1, "Cancel"      },
       [CONFIG_HOOK_BUTTONEVENT_UP] =          { 1,  72, "Up"          },
       [CONFIG_HOOK_BUTTONEVENT_DOWN] =        { 1,  80, "Down"        },
       [CONFIG_HOOK_BUTTONEVENT_REC] =         { 0,   0, "Rec"         },
       [CONFIG_HOOK_BUTTONEVENT_COVER] =       { 0,   0, "Cover"       },
       [CONFIG_HOOK_BUTTONEVENT_LIGHT] =       { 1,  57, "Light"       },
       [CONFIG_HOOK_BUTTONEVENT_CONTRAST] =    { 0,   0, "Contrast"    },
       [CONFIG_HOOK_BUTTONEVENT_APP0] =        { 1,  67, "Application 0" },
       [CONFIG_HOOK_BUTTONEVENT_APP1] =        { 1,  68, "Application 1" },
       [CONFIG_HOOK_BUTTONEVENT_APP2] =        { 1,  87, "Application 2" },
       [CONFIG_HOOK_BUTTONEVENT_APP3] =        { 1,  88, "Application 3" },
};
static const int n_button_config =
       sizeof(button_config) / sizeof(*button_config);

#define KC(n) KS_KEYCODE(n)
static const keysym_t btnmgr_keydesc_default[] = {
/*  pos                         normal                  shifted         */
       KC(1),                  KS_Escape,
       KC(28),                         KS_Return,
       KC(57), KS_Cmd,         KS_Cmd_BacklightToggle,
       KC(67),                         KS_f9,
       KC(68),                         KS_f10,
       KC(72),                         KS_KP_Up,
       KC(80),                         KS_KP_Down,
       KC(87),                         KS_f11,
       KC(88),                         KS_f12,
};
#undef KC
#define KBD_MAP(name, base, map) \
                       { name, base, sizeof(map)/sizeof(keysym_t), map }
const struct wscons_keydesc btnmgr_keydesctab[] = {
       KBD_MAP(KB_US,          0,      btnmgr_keydesc_default),
       {0, 0, 0, 0}
};
#undef KBD_MAP

struct wskbd_mapdata btnmgr_keymapdata = {
       btnmgr_keydesctab,
       KB_US, /* XXX, This is bad idea... */
};

/*
*  function bodies
*/
int
btnmgrmatch(device_t parent, cfdata_t match, void *aux)
{
       struct mainbus_attach_args *ma = aux;

       if (strcmp(ma->ma_name, match->cf_name))
               return 0;

       return (1);
}

void
btnmgrattach(device_t parent,
            device_t self, void *aux)
{
       int id;
       struct btnmgr_softc *sc = device_private(self);
       struct wskbddev_attach_args wa;

       printf("\n");

       /*
        * install button event listener
        */
       for (id = 0; id < n_button_config; id++)
               if (button_config[id].name != NULL)
                       sc->sc_hook_tag = config_hook(CONFIG_HOOK_BUTTONEVENT,
                           id, CONFIG_HOOK_SHARE,
                           btnmgr_hook, sc);

       /*
        * attach wskbd
        */
       wa.console = 0;
       wa.keymap = &btnmgr_keymapdata;
       wa.accessops = &btnmgr_wskbd_accessops;
       wa.accesscookie = sc;

       sc->sc_wskbddev = config_found(self, &wa, wskbddevprint, CFARGS_NONE);

       if (!pmf_device_register(self, NULL, NULL))
               aprint_error_dev(self, "unable to establish power handler\n");
}

static int
btnmgr_hook(void *ctx, int type, long id, void *msg)
{
       struct btnmgr_softc *sc = ctx;

       DPRINTF(("%s button: %s\n", btnmgr_name(id), msg ? "ON" : "OFF"));

       if (button_config[id].kevent) {
               u_int evtype;
               evtype = msg ? WSCONS_EVENT_KEY_DOWN : WSCONS_EVENT_KEY_UP;
#ifdef WSDISPLAY_COMPAT_RAWKBD
               if (sc->sc_rawkbd) {
                       int n;
                       u_char data[16];
                       n = pckbd_encode(evtype, button_config[id].keycode,
                           data);
                       wskbd_rawinput(sc->sc_wskbddev, data, n);
               } else
#endif
                       wskbd_input(sc->sc_wskbddev, evtype,
                           button_config[id].keycode);
       }

       if (id == CONFIG_HOOK_BUTTONEVENT_POWER && msg)
               config_hook_call(CONFIG_HOOK_PMEVENT,
                   CONFIG_HOOK_PMEVENT_SUSPENDREQ, NULL);
       else if (id == CONFIG_HOOK_BUTTONEVENT_COVER)
               config_hook_call(CONFIG_HOOK_POWERCONTROL,
                   CONFIG_HOOK_POWERCONTROL_LCDLIGHT, (void*)(msg ? 0: 1));

       return (0);
}

const char *
btnmgr_name(long id)
{
       if (id < n_button_config)
               return (button_config[id].name);
       return ("unknown");
}

int
btnmgr_wskbd_enable(void *scx, int on)
{
       struct btnmgr_softc *sc = scx;

       if (on) {
               if (sc->sc_enabled)
                       return (EBUSY);
               sc->sc_enabled = 1;
       } else {
               sc->sc_enabled = 0;
       }

       return (0);
}

void
btnmgr_wskbd_set_leds(void *scx, int leds)
{
       /*
        * We have nothing to do.
        */
}

int
btnmgr_wskbd_ioctl(void *scx, u_long cmd, void *data, int flag,
                  struct lwp *l)
{
#ifdef WSDISPLAY_COMPAT_RAWKBD
       struct btnmgr_softc *sc = scx;
#endif
       switch (cmd) {
       case WSKBDIO_GTYPE:
               *(int *)data = WSKBD_TYPE_HPC_BTN;
               return (0);
       case WSKBDIO_SETLEDS:
               DPRINTF(("%s(%d): no LED\n", __FILE__, __LINE__));
               return (0);
       case WSKBDIO_GETLEDS:
               DPRINTF(("%s(%d): no LED\n", __FILE__, __LINE__));
               *(int *)data = 0;
               return (0);
#ifdef WSDISPLAY_COMPAT_RAWKBD
       case WSKBDIO_SETMODE:
               sc->sc_rawkbd = (*(int *)data == WSKBD_RAW);
               DPRINTF(("%s(%d): rawkbd is %s\n", __FILE__, __LINE__,
                   sc->sc_rawkbd ? "on" : "off"));
               return (0);
#endif
       }
       return (EPASSTHROUGH);
}

#ifdef notyet
int
btnmgropen(dev_t dev, int flag, int mode, struct lwp *l)
{
       return (EINVAL);
}

int
btnmgrclose(dev_t dev, int flag, int mode, struct lwp *l)
{
       return (EINVAL);
}

int
btnmgrread(dev_t dev, struct uio *uio, int flag)
{
       return (EINVAL);
}

int
btnmgrwrite(dev_t dev, struct uio *uio, int flag)
{
       return (EINVAL);
}

int
btnmgrioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
{
       return (EINVAL);
}
#endif /* notyet */

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