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btnmgr.c revision 1.31
      1 /*	$NetBSD: btnmgr.c,v 1.31 2021/08/07 16:19:11 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999
      5  *         Shin Takemura and PocketBSD Project. All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the PocketBSD project
     18  *	and its contributors.
     19  * 4. Neither the name of the project nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  */
     36 
     37 #include <sys/cdefs.h>
     38 __KERNEL_RCSID(0, "$NetBSD: btnmgr.c,v 1.31 2021/08/07 16:19:11 thorpej Exp $");
     39 
     40 #ifdef _KERNEL_OPT
     41 #include "opt_btnmgr.h"
     42 #include "opt_wsdisplay_compat.h"
     43 #endif
     44 
     45 #include <sys/param.h>
     46 #include <sys/systm.h>
     47 #include <sys/ioctl.h>
     48 #include <sys/conf.h>
     49 #include <sys/device.h>
     50 #include <sys/malloc.h>
     51 #include <sys/kernel.h>
     52 
     53 #include <dev/wscons/wsconsio.h>
     54 #include <dev/wscons/wskbdvar.h>
     55 #include <dev/wscons/wsksymdef.h>
     56 #ifdef WSDISPLAY_COMPAT_RAWKBD
     57 #include <dev/hpc/pckbd_encode.h>
     58 #endif
     59 
     60 #include <sys/bus.h>
     61 #include <machine/autoconf.h>
     62 #include <machine/config_hook.h>
     63 
     64 #ifdef BTNMGRDEBUG
     65 #ifndef BTNMGRDEBUG_CONF
     66 #define BTNMGRDEBUG_CONF 0
     67 #endif
     68 int	btnmgr_debug = BTNMGRDEBUG_CONF;
     69 #define	DPRINTF(arg) if (btnmgr_debug) printf arg;
     70 #define	DPRINTFN(n, arg) if (btnmgr_debug > (n)) printf arg;
     71 #else
     72 #define	DPRINTF(arg)
     73 #define DPRINTFN(n, arg)
     74 #endif
     75 
     76 struct btnmgr_softc {
     77 	config_hook_tag	sc_hook_tag;
     78 	int sc_enabled;
     79 	device_t sc_wskbddev;
     80 #ifdef WSDISPLAY_COMPAT_RAWKBD
     81 	int sc_rawkbd;
     82 #endif
     83 };
     84 
     85 int btnmgrmatch(device_t, cfdata_t, void *);
     86 void btnmgrattach(device_t, device_t, void *);
     87 const char *btnmgr_name(long);
     88 static int btnmgr_hook(void *, int, long, void *);
     89 
     90 /*
     91  * global/static data
     92  */
     93 CFATTACH_DECL_NEW(btnmgr, sizeof(struct btnmgr_softc),
     94     btnmgrmatch, btnmgrattach, NULL, NULL);
     95 
     96 #ifdef notyet
     97 dev_type_open(btnmgropen);
     98 dev_type_close(btnmgrclose);
     99 dev_type_read(btnmgrread);
    100 dev_type_write(btnmgrwrite);
    101 dev_type_ioctl(btnmgrioctl);
    102 
    103 const struct cdevsw btnmgr_cdevsw = {
    104 	.d_open = btnmgropen,
    105 	.d_close = btnmgrclose,
    106 	.d_read = btnmgrread,
    107 	.d_write = btnmgrwrite,
    108 	.d_ioctl = btnmgrioctl,
    109 	.d_stop = nostop,
    110 	.d_tty = notty,
    111 	.d_poll = nopoll,
    112 	.d_mmap = nommap,
    113 	.d_kqfilter = nokqfilter,
    114 	.d_discard = nodiscard,
    115 	.d_flag = 0
    116 };
    117 #endif /* notyet */
    118 
    119 /* wskbd accessopts */
    120 int	btnmgr_wskbd_enable(void *, int);
    121 void	btnmgr_wskbd_set_leds(void *, int);
    122 int	btnmgr_wskbd_ioctl(void *, u_long, void *, int, struct lwp *);
    123 
    124 const struct wskbd_accessops btnmgr_wskbd_accessops = {
    125 	btnmgr_wskbd_enable,
    126 	btnmgr_wskbd_set_leds,
    127 	btnmgr_wskbd_ioctl,
    128 };
    129 
    130 /* button config: index by button event id */
    131 static const struct {
    132 	int  kevent;
    133 	int  keycode;
    134 	const char *name;
    135 } button_config[] = {
    136 	/* id					kevent keycode name	*/
    137 	[CONFIG_HOOK_BUTTONEVENT_POWER] =	{ 0,   0, "Power"	},
    138 	[CONFIG_HOOK_BUTTONEVENT_OK] =		{ 1,  28, "OK"		},
    139 	[CONFIG_HOOK_BUTTONEVENT_CANCEL] =	{ 1,   1, "Cancel"	},
    140 	[CONFIG_HOOK_BUTTONEVENT_UP] =		{ 1,  72, "Up"		},
    141 	[CONFIG_HOOK_BUTTONEVENT_DOWN] =	{ 1,  80, "Down"	},
    142 	[CONFIG_HOOK_BUTTONEVENT_REC] =		{ 0,   0, "Rec"		},
    143 	[CONFIG_HOOK_BUTTONEVENT_COVER] =	{ 0,   0, "Cover"	},
    144 	[CONFIG_HOOK_BUTTONEVENT_LIGHT] =	{ 1,  57, "Light"	},
    145 	[CONFIG_HOOK_BUTTONEVENT_CONTRAST] =	{ 0,   0, "Contrast"	},
    146 	[CONFIG_HOOK_BUTTONEVENT_APP0] =	{ 1,  67, "Application 0" },
    147 	[CONFIG_HOOK_BUTTONEVENT_APP1] =	{ 1,  68, "Application 1" },
    148 	[CONFIG_HOOK_BUTTONEVENT_APP2] =	{ 1,  87, "Application 2" },
    149 	[CONFIG_HOOK_BUTTONEVENT_APP3] =	{ 1,  88, "Application 3" },
    150 };
    151 static const int n_button_config =
    152 	sizeof(button_config) / sizeof(*button_config);
    153 
    154 #define KC(n) KS_KEYCODE(n)
    155 static const keysym_t btnmgr_keydesc_default[] = {
    156 /*  pos				normal			shifted		*/
    157 	KC(1), 			KS_Escape,
    158 	KC(28), 			KS_Return,
    159 	KC(57),	KS_Cmd,		KS_Cmd_BacklightToggle,
    160 	KC(67), 			KS_f9,
    161 	KC(68), 			KS_f10,
    162 	KC(72), 			KS_KP_Up,
    163 	KC(80), 			KS_KP_Down,
    164 	KC(87), 			KS_f11,
    165 	KC(88), 			KS_f12,
    166 };
    167 #undef KC
    168 #define KBD_MAP(name, base, map) \
    169 			{ name, base, sizeof(map)/sizeof(keysym_t), map }
    170 const struct wscons_keydesc btnmgr_keydesctab[] = {
    171 	KBD_MAP(KB_US,		0,	btnmgr_keydesc_default),
    172 	{0, 0, 0, 0}
    173 };
    174 #undef KBD_MAP
    175 
    176 struct wskbd_mapdata btnmgr_keymapdata = {
    177 	btnmgr_keydesctab,
    178 	KB_US, /* XXX, This is bad idea... */
    179 };
    180 
    181 /*
    182  *  function bodies
    183  */
    184 int
    185 btnmgrmatch(device_t parent, cfdata_t match, void *aux)
    186 {
    187 	struct mainbus_attach_args *ma = aux;
    188 
    189 	if (strcmp(ma->ma_name, match->cf_name))
    190 		return 0;
    191 
    192 	return (1);
    193 }
    194 
    195 void
    196 btnmgrattach(device_t parent,
    197 	     device_t self, void *aux)
    198 {
    199 	int id;
    200 	struct btnmgr_softc *sc = device_private(self);
    201 	struct wskbddev_attach_args wa;
    202 
    203 	printf("\n");
    204 
    205 	/*
    206 	 * install button event listener
    207 	 */
    208 	for (id = 0; id < n_button_config; id++)
    209 		if (button_config[id].name != NULL)
    210 			sc->sc_hook_tag = config_hook(CONFIG_HOOK_BUTTONEVENT,
    211 			    id, CONFIG_HOOK_SHARE,
    212 			    btnmgr_hook, sc);
    213 
    214 	/*
    215 	 * attach wskbd
    216 	 */
    217 	wa.console = 0;
    218 	wa.keymap = &btnmgr_keymapdata;
    219 	wa.accessops = &btnmgr_wskbd_accessops;
    220 	wa.accesscookie = sc;
    221 
    222 	sc->sc_wskbddev = config_found(self, &wa, wskbddevprint, CFARGS_NONE);
    223 
    224 	if (!pmf_device_register(self, NULL, NULL))
    225 		aprint_error_dev(self, "unable to establish power handler\n");
    226 }
    227 
    228 static int
    229 btnmgr_hook(void *ctx, int type, long id, void *msg)
    230 {
    231 	struct btnmgr_softc *sc = ctx;
    232 
    233 	DPRINTF(("%s button: %s\n", btnmgr_name(id), msg ? "ON" : "OFF"));
    234 
    235 	if (button_config[id].kevent) {
    236 		u_int evtype;
    237 		evtype = msg ? WSCONS_EVENT_KEY_DOWN : WSCONS_EVENT_KEY_UP;
    238 #ifdef WSDISPLAY_COMPAT_RAWKBD
    239 		if (sc->sc_rawkbd) {
    240 			int n;
    241 			u_char data[16];
    242 			n = pckbd_encode(evtype, button_config[id].keycode,
    243 			    data);
    244 			wskbd_rawinput(sc->sc_wskbddev, data, n);
    245 		} else
    246 #endif
    247 			wskbd_input(sc->sc_wskbddev, evtype,
    248 			    button_config[id].keycode);
    249 	}
    250 
    251 	if (id == CONFIG_HOOK_BUTTONEVENT_POWER && msg)
    252 		config_hook_call(CONFIG_HOOK_PMEVENT,
    253 		    CONFIG_HOOK_PMEVENT_SUSPENDREQ, NULL);
    254 	else if (id == CONFIG_HOOK_BUTTONEVENT_COVER)
    255 		config_hook_call(CONFIG_HOOK_POWERCONTROL,
    256 		    CONFIG_HOOK_POWERCONTROL_LCDLIGHT, (void*)(msg ? 0: 1));
    257 
    258 	return (0);
    259 }
    260 
    261 const char *
    262 btnmgr_name(long id)
    263 {
    264 	if (id < n_button_config)
    265 		return (button_config[id].name);
    266 	return ("unknown");
    267 }
    268 
    269 int
    270 btnmgr_wskbd_enable(void *scx, int on)
    271 {
    272 	struct btnmgr_softc *sc = scx;
    273 
    274 	if (on) {
    275 		if (sc->sc_enabled)
    276 			return (EBUSY);
    277 		sc->sc_enabled = 1;
    278 	} else {
    279 		sc->sc_enabled = 0;
    280 	}
    281 
    282 	return (0);
    283 }
    284 
    285 void
    286 btnmgr_wskbd_set_leds(void *scx, int leds)
    287 {
    288 	/*
    289 	 * We have nothing to do.
    290 	 */
    291 }
    292 
    293 int
    294 btnmgr_wskbd_ioctl(void *scx, u_long cmd, void *data, int flag,
    295 		   struct lwp *l)
    296 {
    297 #ifdef WSDISPLAY_COMPAT_RAWKBD
    298 	struct btnmgr_softc *sc = scx;
    299 #endif
    300 	switch (cmd) {
    301 	case WSKBDIO_GTYPE:
    302 		*(int *)data = WSKBD_TYPE_HPC_BTN;
    303 		return (0);
    304 	case WSKBDIO_SETLEDS:
    305 		DPRINTF(("%s(%d): no LED\n", __FILE__, __LINE__));
    306 		return (0);
    307 	case WSKBDIO_GETLEDS:
    308 		DPRINTF(("%s(%d): no LED\n", __FILE__, __LINE__));
    309 		*(int *)data = 0;
    310 		return (0);
    311 #ifdef WSDISPLAY_COMPAT_RAWKBD
    312 	case WSKBDIO_SETMODE:
    313 		sc->sc_rawkbd = (*(int *)data == WSKBD_RAW);
    314 		DPRINTF(("%s(%d): rawkbd is %s\n", __FILE__, __LINE__,
    315 		    sc->sc_rawkbd ? "on" : "off"));
    316 		return (0);
    317 #endif
    318 	}
    319 	return (EPASSTHROUGH);
    320 }
    321 
    322 #ifdef notyet
    323 int
    324 btnmgropen(dev_t dev, int flag, int mode, struct lwp *l)
    325 {
    326 	return (EINVAL);
    327 }
    328 
    329 int
    330 btnmgrclose(dev_t dev, int flag, int mode, struct lwp *l)
    331 {
    332 	return (EINVAL);
    333 }
    334 
    335 int
    336 btnmgrread(dev_t dev, struct uio *uio, int flag)
    337 {
    338 	return (EINVAL);
    339 }
    340 
    341 int
    342 btnmgrwrite(dev_t dev, struct uio *uio, int flag)
    343 {
    344 	return (EINVAL);
    345 }
    346 
    347 int
    348 btnmgrioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
    349 {
    350 	return (EINVAL);
    351 }
    352 #endif /* notyet */
    353