2 * Copyright (c) 2015-2016 Oleksandr Tymoshenko <gonzo@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include "opt_platform.h"
33 #include <sys/param.h>
34 #include <sys/systm.h>
37 #include <sys/kernel.h>
39 #include <sys/malloc.h>
40 #include <sys/module.h>
41 #include <sys/mutex.h>
45 #include <sys/ioccom.h>
46 #include <sys/filio.h>
50 #include <dev/kbd/kbdreg.h>
51 #include <dev/kbd/kbdtables.h>
53 #include <dev/fdt/fdt_common.h>
54 #include <dev/ofw/ofw_bus.h>
55 #include <dev/ofw/ofw_bus_subr.h>
57 #include <dev/gpio/gpiobusvar.h>
58 #include <dev/gpio/gpiokeys.h>
60 #define GPIOKEYS_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
61 #define GPIOKEYS_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
62 #define GPIOKEYS_LOCK_INIT(_sc) \
63 mtx_init(&_sc->sc_mtx, device_get_nameunit((_sc)->sc_dev), \
65 #define GPIOKEYS_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx);
66 #define GPIOKEYS_ASSERT_LOCKED(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED)
68 #define GPIOKEY_LOCK(_key) mtx_lock(&(_key)->mtx)
69 #define GPIOKEY_UNLOCK(_key) mtx_unlock(&(_key)->mtx)
70 #define GPIOKEY_LOCK_INIT(_key) \
71 mtx_init(&(_key)->mtx, "gpiokey", "gpiokey", MTX_DEF)
72 #define GPIOKEY_LOCK_DESTROY(_key) mtx_destroy(&(_key)->mtx);
75 #define KEY_RELEASE 0x80
78 #define SCAN_RELEASE 0x80
79 #define SCAN_CHAR(c) ((c) & 0x7f)
81 #define GPIOKEYS_GLOBAL_NMOD 8 /* units */
82 #define GPIOKEYS_GLOBAL_NKEYCODE 6 /* units */
83 #define GPIOKEYS_GLOBAL_IN_BUF_SIZE (2*(GPIOKEYS_GLOBAL_NMOD + (2*GPIOKEYS_GLOBAL_NKEYCODE))) /* bytes */
84 #define GPIOKEYS_GLOBAL_IN_BUF_FULL (GPIOKEYS_GLOBAL_IN_BUF_SIZE / 2) /* bytes */
85 #define GPIOKEYS_GLOBAL_NFKEY (sizeof(fkey_tab)/sizeof(fkey_tab[0])) /* units */
86 #define GPIOKEYS_GLOBAL_BUFFER_SIZE 64 /* bytes */
88 #define AUTOREPEAT_DELAY 250
89 #define AUTOREPEAT_REPEAT 34
91 struct gpiokeys_softc;
95 struct gpiokeys_softc *parent_sc;
98 struct resource *irq_res;
103 struct callout debounce_callout;
104 struct callout repeat_callout;
107 int debounce_interval;
110 struct gpiokeys_softc
114 struct gpiokey *sc_keys;
119 accentmap_t sc_accmap;
120 fkeytab_t sc_fkeymap[GPIOKEYS_GLOBAL_NFKEY];
122 uint32_t sc_input[GPIOKEYS_GLOBAL_IN_BUF_SIZE]; /* input buffer */
124 #define GPIOKEYS_GLOBAL_FLAG_POLLING 0x00000002
126 uint32_t sc_flags; /* flags */
128 int sc_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */
129 int sc_state; /* shift/lock key state */
130 int sc_accents; /* accent key index (> 0) */
134 uint16_t sc_inputhead;
135 uint16_t sc_inputtail;
140 /* gpio-keys device */
141 static int gpiokeys_probe(device_t);
142 static int gpiokeys_attach(device_t);
143 static int gpiokeys_detach(device_t);
145 /* kbd methods prototypes */
146 static int gpiokeys_set_typematic(keyboard_t *, int);
147 static uint32_t gpiokeys_read_char(keyboard_t *, int);
148 static void gpiokeys_clear_state(keyboard_t *);
149 static int gpiokeys_ioctl(keyboard_t *, u_long, caddr_t);
150 static int gpiokeys_enable(keyboard_t *);
151 static int gpiokeys_disable(keyboard_t *);
152 static void gpiokeys_event_keyinput(struct gpiokeys_softc *);
155 gpiokeys_put_key(struct gpiokeys_softc *sc, uint32_t key)
158 GPIOKEYS_ASSERT_LOCKED(sc);
160 if (sc->sc_inputs < GPIOKEYS_GLOBAL_IN_BUF_SIZE) {
161 sc->sc_input[sc->sc_inputtail] = key;
163 ++(sc->sc_inputtail);
164 if (sc->sc_inputtail >= GPIOKEYS_GLOBAL_IN_BUF_SIZE) {
165 sc->sc_inputtail = 0;
168 device_printf(sc->sc_dev, "input buffer is full\n");
173 gpiokeys_key_event(struct gpiokeys_softc *sc, uint16_t keycode, int pressed)
178 key = keycode & SCAN_KEYCODE_MASK;
184 if (keycode & SCAN_PREFIX_E0)
185 gpiokeys_put_key(sc, 0xe0);
186 else if (keycode & SCAN_PREFIX_E1)
187 gpiokeys_put_key(sc, 0xe1);
189 gpiokeys_put_key(sc, key);
192 gpiokeys_event_keyinput(sc);
196 gpiokey_autorepeat(void *arg)
202 if (key->keycode == GPIOKEY_NONE)
205 gpiokeys_key_event(key->parent_sc, key->keycode, 1);
207 callout_reset(&key->repeat_callout, key->repeat,
208 gpiokey_autorepeat, key);
212 gpiokey_debounced_intr(void *arg)
219 if (key->keycode == GPIOKEY_NONE)
222 gpio_pin_is_active(key->pin, &active);
224 gpiokeys_key_event(key->parent_sc, key->keycode, 1);
225 if (key->autorepeat) {
226 callout_reset(&key->repeat_callout, key->repeat_delay,
227 gpiokey_autorepeat, key);
231 if (key->autorepeat &&
232 callout_pending(&key->repeat_callout))
233 callout_stop(&key->repeat_callout);
234 gpiokeys_key_event(key->parent_sc, key->keycode, 0);
239 gpiokey_intr(void *arg)
247 debounce_ticks = (hz * key->debounce_interval) / 1000;
248 if (debounce_ticks == 0)
250 if (!callout_pending(&key->debounce_callout))
251 callout_reset(&key->debounce_callout, debounce_ticks,
252 gpiokey_debounced_intr, key);
257 gpiokeys_attach_key(struct gpiokeys_softc *sc, phandle_t node,
264 const char *key_name;
266 GPIOKEY_LOCK_INIT(key);
268 callout_init_mtx(&key->debounce_callout, &key->mtx, 0);
269 callout_init_mtx(&key->repeat_callout, &key->mtx, 0);
272 if (OF_getprop_alloc(node, "label", 1, (void **)&name) == -1)
273 OF_getprop_alloc(node, "name", 1, (void **)&name);
278 key_name = "unknown";
280 key->autorepeat = OF_hasprop(node, "autorepeat");
282 key->repeat_delay = (hz * AUTOREPEAT_DELAY) / 1000;
283 if (key->repeat_delay == 0)
284 key->repeat_delay = 1;
286 key->repeat = (hz * AUTOREPEAT_REPEAT) / 1000;
287 if (key->repeat == 0)
290 if ((OF_getprop(node, "debounce-interval", &prop, sizeof(prop))) > 0)
291 key->debounce_interval = fdt32_to_cpu(prop);
293 key->debounce_interval = 5;
295 if ((OF_getprop(node, "freebsd,code", &prop, sizeof(prop))) > 0)
296 key->keycode = fdt32_to_cpu(prop);
297 else if ((OF_getprop(node, "linux,code", &prop, sizeof(prop))) > 0) {
298 code = fdt32_to_cpu(prop);
299 key->keycode = gpiokey_map_linux_code(code);
300 if (key->keycode == GPIOKEY_NONE)
301 device_printf(sc->sc_dev, "<%s> failed to map linux,code value 0x%x\n",
305 device_printf(sc->sc_dev, "<%s> no linux,code or freebsd,code property\n",
308 err = gpio_pin_get_by_ofw_idx(sc->sc_dev, node, 0, &key->pin);
310 device_printf(sc->sc_dev, "<%s> failed to map pin\n", key_name);
316 key->irq_res = gpio_alloc_intr_resource(sc->sc_dev, &key->irq_rid,
317 RF_ACTIVE, key->pin, GPIO_INTR_EDGE_BOTH);
319 device_printf(sc->sc_dev, "<%s> cannot allocate interrupt\n", key_name);
320 gpio_pin_release(key->pin);
327 if (bus_setup_intr(sc->sc_dev, key->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
328 NULL, gpiokey_intr, key,
329 &key->intr_hl) != 0) {
330 device_printf(sc->sc_dev, "<%s> unable to setup the irq handler\n", key_name);
331 bus_release_resource(sc->sc_dev, SYS_RES_IRQ, key->irq_rid,
333 gpio_pin_release(key->pin);
342 device_printf(sc->sc_dev, "<%s> code=%08x, autorepeat=%d, "\
343 "repeat=%d, repeat_delay=%d\n", key_name, key->keycode,
344 key->autorepeat, key->repeat, key->repeat_delay);
351 gpiokeys_detach_key(struct gpiokeys_softc *sc, struct gpiokey *key)
356 bus_teardown_intr(sc->sc_dev, key->irq_res, key->intr_hl);
358 bus_release_resource(sc->sc_dev, SYS_RES_IRQ,
359 key->irq_rid, key->irq_res);
361 gpio_pin_release(key->pin);
362 if (callout_pending(&key->repeat_callout))
363 callout_drain(&key->repeat_callout);
364 if (callout_pending(&key->debounce_callout))
365 callout_drain(&key->debounce_callout);
368 GPIOKEY_LOCK_DESTROY(key);
372 gpiokeys_probe(device_t dev)
374 if (!ofw_bus_is_compatible(dev, "gpio-keys"))
377 device_set_desc(dev, "GPIO keyboard");
383 gpiokeys_attach(device_t dev)
386 struct gpiokeys_softc *sc;
388 phandle_t keys, child;
391 if ((keys = ofw_bus_get_node(dev)) == -1)
394 sc = device_get_softc(dev);
398 GPIOKEYS_LOCK_INIT(sc);
399 unit = device_get_unit(dev);
400 kbd_init_struct(kbd, "gpiokeys", KB_OTHER, unit, 0, 0, 0);
402 kbd->kb_data = (void *)sc;
403 sc->sc_mode = K_XLATE;
405 sc->sc_keymap = key_map;
406 sc->sc_accmap = accent_map;
408 kbd_set_maps(kbd, &sc->sc_keymap, &sc->sc_accmap,
409 sc->sc_fkeymap, GPIOKEYS_GLOBAL_NFKEY);
411 KBD_FOUND_DEVICE(kbd);
413 gpiokeys_clear_state(kbd);
419 if (kbd_register(kbd) < 0) {
423 KBD_CONFIG_DONE(kbd);
425 gpiokeys_enable(kbd);
427 #ifdef KBD_INSTALL_CDEV
428 if (kbd_attach(kbd)) {
439 /* Traverse the 'gpio-keys' node and count keys */
440 for (child = OF_child(keys); child != 0; child = OF_peer(child)) {
441 if (!OF_hasprop(child, "gpios"))
447 sc->sc_keys = malloc(sizeof(struct gpiokey) * total_keys,
448 M_DEVBUF, M_WAITOK | M_ZERO);
450 sc->sc_total_keys = 0;
451 /* Traverse the 'gpio-keys' node and count keys */
452 for (child = OF_child(keys); child != 0; child = OF_peer(child)) {
453 if (!OF_hasprop(child, "gpios"))
455 gpiokeys_attach_key(sc, child ,&sc->sc_keys[sc->sc_total_keys]);
463 gpiokeys_detach(dev);
468 gpiokeys_detach(device_t dev)
470 struct gpiokeys_softc *sc;
473 sc = device_get_softc(dev);
475 for (i = 0; i < sc->sc_total_keys; i++)
476 gpiokeys_detach_key(sc, &sc->sc_keys[i]);
478 GPIOKEYS_LOCK_DESTROY(sc);
480 free(sc->sc_keys, M_DEVBUF);
485 /* early keyboard probe, not supported */
487 gpiokeys_configure(int flags)
492 /* detect a keyboard, not used */
494 gpiokeys__probe(int unit, void *arg, int flags)
499 /* reset and initialize the device, not used */
501 gpiokeys_init(int unit, keyboard_t **kbdp, void *arg, int flags)
506 /* test the interface to the device, not used */
508 gpiokeys_test_if(keyboard_t *kbd)
513 /* finish using this keyboard, not used */
515 gpiokeys_term(keyboard_t *kbd)
520 /* keyboard interrupt routine, not used */
522 gpiokeys_intr(keyboard_t *kbd, void *arg)
527 /* lock the access to the keyboard, not used */
529 gpiokeys_lock(keyboard_t *kbd, int lock)
535 * Enable the access to the device; until this function is called,
536 * the client cannot read from the keyboard.
539 gpiokeys_enable(keyboard_t *kbd)
541 struct gpiokeys_softc *sc;
551 /* disallow the access to the device */
553 gpiokeys_disable(keyboard_t *kbd)
555 struct gpiokeys_softc *sc;
566 gpiokeys_do_poll(struct gpiokeys_softc *sc, uint8_t wait)
569 KASSERT((sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING) != 0,
570 ("gpiokeys_do_poll called when not polling\n"));
572 GPIOKEYS_ASSERT_LOCKED(sc);
574 if (!kdb_active && !SCHEDULER_STOPPED()) {
575 while (sc->sc_inputs == 0) {
576 kern_yield(PRI_UNCHANGED);
583 while ((sc->sc_inputs == 0) && wait) {
588 /* check if data is waiting */
590 gpiokeys_check(keyboard_t *kbd)
592 struct gpiokeys_softc *sc = kbd->kb_data;
594 GPIOKEYS_ASSERT_LOCKED(sc);
596 if (!KBD_IS_ACTIVE(kbd))
599 if (sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING)
600 gpiokeys_do_poll(sc, 0);
602 if (sc->sc_inputs > 0) {
608 /* check if char is waiting */
610 gpiokeys_check_char_locked(keyboard_t *kbd)
612 if (!KBD_IS_ACTIVE(kbd))
615 return (gpiokeys_check(kbd));
619 gpiokeys_check_char(keyboard_t *kbd)
622 struct gpiokeys_softc *sc = kbd->kb_data;
625 result = gpiokeys_check_char_locked(kbd);
632 gpiokeys_get_key(struct gpiokeys_softc *sc, uint8_t wait)
636 KASSERT((!kdb_active && !SCHEDULER_STOPPED())
637 || (sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING) != 0,
638 ("not polling in kdb or panic\n"));
640 GPIOKEYS_ASSERT_LOCKED(sc);
642 if (sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING)
643 gpiokeys_do_poll(sc, wait);
645 if (sc->sc_inputs == 0) {
648 c = sc->sc_input[sc->sc_inputhead];
650 ++(sc->sc_inputhead);
651 if (sc->sc_inputhead >= GPIOKEYS_GLOBAL_IN_BUF_SIZE) {
652 sc->sc_inputhead = 0;
659 /* read one byte from the keyboard if it's allowed */
661 gpiokeys_read(keyboard_t *kbd, int wait)
663 struct gpiokeys_softc *sc = kbd->kb_data;
666 if (!KBD_IS_ACTIVE(kbd))
670 keycode = gpiokeys_get_key(sc, (wait == FALSE) ? 0 : 1);
671 if (!KBD_IS_ACTIVE(kbd) || (keycode == -1))
679 /* read char from the keyboard */
681 gpiokeys_read_char_locked(keyboard_t *kbd, int wait)
683 struct gpiokeys_softc *sc = kbd->kb_data;
687 if (!KBD_IS_ACTIVE(kbd))
692 /* see if there is something in the keyboard port */
694 keycode = gpiokeys_get_key(sc, (wait == FALSE) ? 0 : 1);
697 /* return the byte as is for the K_RAW mode */
698 if (sc->sc_mode == K_RAW) {
702 /* return the key code in the K_CODE mode */
703 /* XXX: keycode |= SCAN_RELEASE; */
705 if (sc->sc_mode == K_CODE) {
709 /* keycode to key action */
710 action = genkbd_keyaction(kbd, SCAN_CHAR(keycode),
711 (keycode & SCAN_RELEASE),
712 &sc->sc_state, &sc->sc_accents);
713 if (action == NOKEY) {
720 /* Currently wait is always false. */
722 gpiokeys_read_char(keyboard_t *kbd, int wait)
725 struct gpiokeys_softc *sc = kbd->kb_data;
728 keycode = gpiokeys_read_char_locked(kbd, wait);
734 /* some useful control functions */
736 gpiokeys_ioctl_locked(keyboard_t *kbd, u_long cmd, caddr_t arg)
738 struct gpiokeys_softc *sc = kbd->kb_data;
739 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
740 defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
746 case KDGKBMODE: /* get keyboard mode */
747 *(int *)arg = sc->sc_mode;
749 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
750 defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
752 ival = IOCPARM_IVAL(arg);
753 arg = (caddr_t)&ival;
756 case KDSKBMODE: /* set keyboard mode */
757 switch (*(int *)arg) {
759 if (sc->sc_mode != K_XLATE) {
760 /* make lock key state and LED state match */
761 sc->sc_state &= ~LOCK_MASK;
762 sc->sc_state |= KBD_LED_VAL(kbd);
767 if (sc->sc_mode != *(int *)arg) {
768 if ((sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING) == 0)
769 gpiokeys_clear_state(kbd);
770 sc->sc_mode = *(int *)arg;
778 case KDGETLED: /* get keyboard LED */
779 *(int *)arg = KBD_LED_VAL(kbd);
781 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
782 defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
784 ival = IOCPARM_IVAL(arg);
785 arg = (caddr_t)&ival;
788 case KDSETLED: /* set keyboard LED */
789 KBD_LED_VAL(kbd) = *(int *)arg;
791 case KDGKBSTATE: /* get lock key state */
792 *(int *)arg = sc->sc_state & LOCK_MASK;
794 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
795 defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
797 ival = IOCPARM_IVAL(arg);
798 arg = (caddr_t)&ival;
801 case KDSKBSTATE: /* set lock key state */
802 if (*(int *)arg & ~LOCK_MASK) {
805 sc->sc_state &= ~LOCK_MASK;
806 sc->sc_state |= *(int *)arg;
809 case KDSETREPEAT: /* set keyboard repeat rate (new
811 if (!KBD_HAS_DEVICE(kbd)) {
814 if (((int *)arg)[1] < 0) {
817 if (((int *)arg)[0] < 0) {
820 if (((int *)arg)[0] < 200) /* fastest possible value */
821 kbd->kb_delay1 = 200;
823 kbd->kb_delay1 = ((int *)arg)[0];
824 kbd->kb_delay2 = ((int *)arg)[1];
827 #if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
828 defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
830 ival = IOCPARM_IVAL(arg);
831 arg = (caddr_t)&ival;
834 case KDSETRAD: /* set keyboard repeat rate (old
836 return (gpiokeys_set_typematic(kbd, *(int *)arg));
838 case PIO_KEYMAP: /* set keyboard translation table */
839 case OPIO_KEYMAP: /* set keyboard translation table
841 case PIO_KEYMAPENT: /* set keyboard translation table
843 case PIO_DEADKEYMAP: /* set accent key translation table */
847 return (genkbd_commonioctl(kbd, cmd, arg));
854 gpiokeys_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
857 struct gpiokeys_softc *sc;
861 * XXX Check if someone is calling us from a critical section:
863 if (curthread->td_critnest != 0)
867 result = gpiokeys_ioctl_locked(kbd, cmd, arg);
873 /* clear the internal state of the keyboard */
875 gpiokeys_clear_state(keyboard_t *kbd)
877 struct gpiokeys_softc *sc = kbd->kb_data;
879 sc->sc_flags &= ~(GPIOKEYS_GLOBAL_FLAG_POLLING);
880 sc->sc_state &= LOCK_MASK; /* preserve locking key state */
884 /* get the internal state, not used */
886 gpiokeys_get_state(keyboard_t *kbd, void *buf, size_t len)
888 return (len == 0) ? 1 : -1;
891 /* set the internal state, not used */
893 gpiokeys_set_state(keyboard_t *kbd, void *buf, size_t len)
899 gpiokeys_poll(keyboard_t *kbd, int on)
901 struct gpiokeys_softc *sc = kbd->kb_data;
905 sc->sc_flags |= GPIOKEYS_GLOBAL_FLAG_POLLING;
907 sc->sc_flags &= ~GPIOKEYS_GLOBAL_FLAG_POLLING;
914 gpiokeys_set_typematic(keyboard_t *kbd, int code)
916 static const int delays[] = {250, 500, 750, 1000};
917 static const int rates[] = {34, 38, 42, 46, 50, 55, 59, 63,
918 68, 76, 84, 92, 100, 110, 118, 126,
919 136, 152, 168, 184, 200, 220, 236, 252,
920 272, 304, 336, 368, 400, 440, 472, 504};
925 kbd->kb_delay1 = delays[(code >> 5) & 3];
926 kbd->kb_delay2 = rates[code & 0x1f];
931 gpiokeys_event_keyinput(struct gpiokeys_softc *sc)
935 if ((sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING) != 0)
938 if (KBD_IS_ACTIVE(&sc->sc_kbd) &&
939 KBD_IS_BUSY(&sc->sc_kbd)) {
940 /* let the callback function process the input */
941 (sc->sc_kbd.kb_callback.kc_func) (&sc->sc_kbd, KBDIO_KEYINPUT,
942 sc->sc_kbd.kb_callback.kc_arg);
944 /* read and discard the input, no one is waiting for it */
946 c = gpiokeys_read_char(&sc->sc_kbd, 0);
947 } while (c != NOKEY);
951 static keyboard_switch_t gpiokeyssw = {
952 .probe = &gpiokeys__probe,
953 .init = &gpiokeys_init,
954 .term = &gpiokeys_term,
955 .intr = &gpiokeys_intr,
956 .test_if = &gpiokeys_test_if,
957 .enable = &gpiokeys_enable,
958 .disable = &gpiokeys_disable,
959 .read = &gpiokeys_read,
960 .check = &gpiokeys_check,
961 .read_char = &gpiokeys_read_char,
962 .check_char = &gpiokeys_check_char,
963 .ioctl = &gpiokeys_ioctl,
964 .lock = &gpiokeys_lock,
965 .clear_state = &gpiokeys_clear_state,
966 .get_state = &gpiokeys_get_state,
967 .set_state = &gpiokeys_set_state,
968 .get_fkeystr = &genkbd_get_fkeystr,
969 .poll = &gpiokeys_poll,
970 .diag = &genkbd_diag,
973 KEYBOARD_DRIVER(gpiokeys, gpiokeyssw, gpiokeys_configure);
976 gpiokeys_driver_load(module_t mod, int what, void *arg)
980 kbd_add_driver(&gpiokeys_kbd_driver);
983 kbd_delete_driver(&gpiokeys_kbd_driver);
989 static devclass_t gpiokeys_devclass;
991 static device_method_t gpiokeys_methods[] = {
992 DEVMETHOD(device_probe, gpiokeys_probe),
993 DEVMETHOD(device_attach, gpiokeys_attach),
994 DEVMETHOD(device_detach, gpiokeys_detach),
999 static driver_t gpiokeys_driver = {
1002 sizeof(struct gpiokeys_softc),
1005 DRIVER_MODULE(gpiokeys, simplebus, gpiokeys_driver, gpiokeys_devclass, gpiokeys_driver_load, 0);
1006 MODULE_VERSION(gpiokeys, 1);