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Index: sys/conf/files
===================================================================
--- sys/conf/files
+++ sys/conf/files
@@ -1500,6 +1500,8 @@
dev/gem/if_gem_pci.c optional gem pci
dev/gem/if_gem_sbus.c optional gem sbus
dev/gpio/gpiobacklight.c optional gpiobacklight fdt
+dev/gpio/gpiokeys.c optional gpiokeys fdt
+dev/gpio/gpiokeys_codes.c optional gpiokeys fdt
dev/gpio/gpiobus.c optional gpio \
dependency "gpiobus_if.h"
dev/gpio/gpioc.c optional gpio \
Index: sys/dev/gpio/gpiokeys.h
===================================================================
--- /dev/null
+++ sys/dev/gpio/gpiokeys.h
@@ -0,0 +1,39 @@
+/*-
+ * Copyright (c) 2015-2016 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+#ifndef __GPIOKEYS_H__
+#define __GPIOKEYS_H__
+
+#define SCAN_KEYCODE_MASK 0xff
+#define SCAN_PREFIX_E0 0x10000000
+#define SCAN_PREFIX_E1 0x20000000
+#define GPIOKEY_E0(k) (SCAN_PREFIX_E0 | k)
+#define GPIOKEY_NONE 0xffffffff
+
+uint32_t gpiokey_map_linux_code(uint32_t linux_code);
+
+#endif /* __GPIOKEYS_H__ */
Index: sys/dev/gpio/gpiokeys.c
===================================================================
--- /dev/null
+++ sys/dev/gpio/gpiokeys.c
@@ -0,0 +1,990 @@
+/*-
+ * Copyright (c) 2015-2016 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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>
+__FBSDID("$FreeBSD$");
+
+#include "opt_platform.h"
+#include "opt_kbd.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/gpio.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/proc.h>
+#include <sys/kdb.h>
+
+#include <sys/ioccom.h>
+#include <sys/filio.h>
+#include <sys/tty.h>
+#include <sys/kbio.h>
+
+#include <dev/kbd/kbdreg.h>
+#include <dev/kbd/kbdtables.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/gpio/gpiobusvar.h>
+#include <dev/gpio/gpiokeys.h>
+
+#define GPIOKEYS_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
+#define GPIOKEYS_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
+#define GPIOKEYS_LOCK_INIT(_sc) \
+ mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \
+ "gpiokeys", MTX_DEF)
+#define GPIOKEYS_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
+
+#define GPIOKEY_LOCK(_key) mtx_lock(&(_key)->mtx)
+#define GPIOKEY_UNLOCK(_key) mtx_unlock(&(_key)->mtx)
+#define GPIOKEY_LOCK_INIT(_key) \
+ mtx_init(&_key->mtx, "gpiokey", "gpiokey", MTX_DEF)
+#define GPIOKEY_LOCK_DESTROY(_key) mtx_destroy(&_key->mtx);
+
+#define KEY_PRESS 0
+#define KEY_RELEASE 0x80
+
+#define SCAN_PRESS 0
+#define SCAN_RELEASE 0x80
+#define SCAN_CHAR(c) ((c) & 0x7f)
+
+#define GPIOKEYS_GLOBAL_NMOD 8 /* units */
+#define GPIOKEYS_GLOBAL_NKEYCODE 6 /* units */
+#define GPIOKEYS_GLOBAL_IN_BUF_SIZE (2*(GPIOKEYS_GLOBAL_NMOD + (2*GPIOKEYS_GLOBAL_NKEYCODE))) /* bytes */
+#define GPIOKEYS_GLOBAL_IN_BUF_FULL (GPIOKEYS_GLOBAL_IN_BUF_SIZE / 2) /* bytes */
+#define GPIOKEYS_GLOBAL_NFKEY (sizeof(fkey_tab)/sizeof(fkey_tab[0])) /* units */
+#define GPIOKEYS_GLOBAL_BUFFER_SIZE 64 /* bytes */
+
+#define AUTOREPEAT_DELAY 250
+#define AUTOREPEAT_REPEAT 34
+
+struct gpiokey
+{
+ gpio_pin_t pin;
+ int irq_rid;
+ struct resource *irq_res;
+ void *intr_hl;
+ struct mtx mtx;
+ uint32_t keycode;
+ int autorepeat;
+ struct callout debounce_callout;
+ struct callout repeat_callout;
+ int repeat_delay;
+ int repeat;
+};
+
+struct gpiokeys_softc
+{
+ device_t sc_dev;
+ struct mtx sc_mtx;
+ struct gpiokey *sc_keys;
+ int sc_total_keys;
+
+ keyboard_t sc_kbd;
+ keymap_t sc_keymap;
+ accentmap_t sc_accmap;
+ fkeytab_t sc_fkeymap[GPIOKEYS_GLOBAL_NFKEY];
+
+ uint32_t sc_input[GPIOKEYS_GLOBAL_IN_BUF_SIZE]; /* input buffer */
+ uint32_t sc_time_ms;
+#define GPIOKEYS_GLOBAL_FLAG_POLLING 0x00000002
+
+ uint32_t sc_flags; /* flags */
+
+ int sc_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */
+ int sc_state; /* shift/lock key state */
+ int sc_accents; /* accent key index (> 0) */
+ int sc_kbd_size;
+
+ uint16_t sc_inputs;
+ uint16_t sc_inputhead;
+ uint16_t sc_inputtail;
+
+ uint8_t sc_kbd_id;
+};
+
+struct gpiokeys_softc *gpiokeys_sc;
+
+/* gpio-keys device */
+static int gpiokeys_probe(device_t);
+static int gpiokeys_attach(device_t);
+static int gpiokeys_detach(device_t);
+
+/* kbd methods prototypes */
+static int gpiokeys_set_typematic(keyboard_t *, int);
+static uint32_t gpiokeys_read_char(keyboard_t *, int);
+static void gpiokeys_clear_state(keyboard_t *);
+static int gpiokeys_ioctl(keyboard_t *, u_long, caddr_t);
+static int gpiokeys_enable(keyboard_t *);
+static int gpiokeys_disable(keyboard_t *);
+static void gpiokeys_event_keyinput(struct gpiokeys_softc *);
+
+static void
+gpiokeys_put_key(struct gpiokeys_softc *sc, uint32_t key)
+{
+ if (sc->sc_inputs < GPIOKEYS_GLOBAL_IN_BUF_SIZE) {
+ sc->sc_input[sc->sc_inputtail] = key;
+ ++(sc->sc_inputs);
+ ++(sc->sc_inputtail);
+ if (sc->sc_inputtail >= GPIOKEYS_GLOBAL_IN_BUF_SIZE) {
+ sc->sc_inputtail = 0;
+ }
+ } else {
+ device_printf(sc->sc_dev, "input buffer is full\n");
+ }
+}
+
+static void
+gpiokeys_key_event(uint16_t keycode, int pressed)
+{
+ uint32_t key;
+
+ key = keycode & SCAN_KEYCODE_MASK;
+
+ if (!pressed)
+ key |= KEY_RELEASE;
+
+ if (keycode & SCAN_PREFIX_E0)
+ gpiokeys_put_key(gpiokeys_sc, 0xe0);
+ else if (keycode & SCAN_PREFIX_E1)
+ gpiokeys_put_key(gpiokeys_sc, 0xe1);
+
+ gpiokeys_put_key(gpiokeys_sc, key);
+
+ gpiokeys_event_keyinput(gpiokeys_sc);
+}
+
+static void
+gpiokey_autorepeat(void *arg)
+{
+ struct gpiokey *key;
+
+ key = arg;
+
+ if (key->keycode == GPIOKEY_NONE)
+ return;
+
+ gpiokeys_key_event(key->keycode, 1);
+
+ callout_reset(&key->repeat_callout, key->repeat,
+ gpiokey_autorepeat, key);
+}
+
+static void
+gpiokey_debounced_intr(void *arg)
+{
+ struct gpiokey *key;
+ bool active;
+
+ key = arg;
+
+ if (key->keycode == GPIOKEY_NONE)
+ return;
+
+ gpio_pin_is_active(key->pin, &active);
+ if (active) {
+ gpiokeys_key_event(key->keycode, 1);
+ if (key->autorepeat) {
+ callout_reset(&key->repeat_callout, key->repeat_delay,
+ gpiokey_autorepeat, key);
+ }
+ }
+ else {
+ if (key->autorepeat &&
+ callout_pending(&key->repeat_callout))
+ callout_stop(&key->repeat_callout);
+ gpiokeys_key_event(key->keycode, 0);
+ }
+}
+
+static void
+gpiokey_intr(void *arg)
+{
+ struct gpiokey *key;
+ int debounce_ticks;
+
+ key = arg;
+
+ GPIOKEY_LOCK(key);
+ debounce_ticks = hz*5/1000;
+ if (debounce_ticks == 0)
+ debounce_ticks = 1;
+ if (!callout_pending(&key->debounce_callout))
+ callout_reset(&key->debounce_callout, debounce_ticks,
+ gpiokey_debounced_intr, key);
+ GPIOKEY_UNLOCK(key);
+}
+
+static void
+gpiokeys_attach_key(struct gpiokeys_softc *sc, phandle_t node,
+ struct gpiokey *key)
+{
+ pcell_t prop;
+ char *name;
+ uint32_t code;
+ int err;
+ const char *key_name;
+
+ GPIOKEY_LOCK_INIT(key);
+ callout_init_mtx(&key->debounce_callout, &key->mtx, 0);
+ callout_init_mtx(&key->repeat_callout, &key->mtx, 0);
+
+ name = NULL;
+ if (OF_getprop_alloc(node, "label", 1, (void **)&name) == -1)
+ OF_getprop_alloc(node, "name", 1, (void **)&name);
+
+ if (name != NULL)
+ key_name = name;
+ else
+ key_name = "unknown";
+
+ key->autorepeat = OF_hasprop(node, "autorepeat");
+
+ key->repeat_delay = hz*AUTOREPEAT_DELAY/1000;
+ if (key->repeat_delay == 0)
+ key->repeat_delay = 1;
+
+ key->repeat = hz*AUTOREPEAT_REPEAT/1000;
+ if (key->repeat == 0)
+ key->repeat = 1;
+
+ if ((OF_getprop(node, "freebsd,code", &prop, sizeof(prop))) > 0)
+ key->keycode = fdt32_to_cpu(prop);
+ else if ((OF_getprop(node, "linux,code", &prop, sizeof(prop))) > 0) {
+ code = fdt32_to_cpu(prop);
+ key->keycode = gpiokey_map_linux_code(code);
+ if (key->keycode == GPIOKEY_NONE)
+ device_printf(sc->sc_dev, "<%s> failed to map linux,code value 0x%x\n",
+ key_name, code);
+ }
+ else
+ device_printf(sc->sc_dev, "<%s> no linux,code or freebsd,code property\n",
+ key_name);
+
+ err = gpio_pin_get_by_ofw_idx(sc->sc_dev, node, 0, &key->pin);
+ if (err) {
+ device_printf(sc->sc_dev, "<%s> failed to map pin\n", key_name);
+ if (name)
+ free(name, M_OFWPROP);
+ return;
+ }
+
+ key->irq_res = gpio_alloc_intr_resource(sc->sc_dev, &key->irq_rid,
+ RF_ACTIVE, key->pin, GPIO_INTR_EDGE_BOTH);
+ if (!key->irq_res) {
+ device_printf(sc->sc_dev, "<%s> cannot allocate interrupt\n", key_name);
+ gpio_pin_release(key->pin);
+ key->pin = NULL;
+ if (name)
+ free(name, M_OFWPROP);
+ return;
+ }
+
+ if (bus_setup_intr(sc->sc_dev, key->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
+ NULL, gpiokey_intr, key,
+ &key->intr_hl) != 0) {
+ device_printf(sc->sc_dev, "<%s> unable to setup the irq handler\n", key_name);
+ bus_release_resource(sc->sc_dev, SYS_RES_IRQ, key->irq_rid,
+ key->irq_res);
+ gpio_pin_release(key->pin);
+ key->pin = NULL;
+ key->irq_res = NULL;
+ if (name)
+ free(name, M_OFWPROP);
+ return;
+ }
+
+ if (bootverbose)
+ device_printf(sc->sc_dev, "<%s> code=%08x, autorepeat=%d, "\
+ "repeat=%d, repeat_delay=%d\n", key_name, key->keycode,
+ key->autorepeat, key->repeat, key->repeat_delay);
+
+ if (name)
+ free(name, M_OFWPROP);
+}
+
+static void
+gpiokeys_detach_key(struct gpiokeys_softc *sc, struct gpiokey *key)
+{
+
+ GPIOKEY_LOCK(key);
+ if (key->intr_hl)
+ bus_teardown_intr(sc->sc_dev, key->irq_res, key->intr_hl);
+ if (key->irq_res)
+ bus_release_resource(sc->sc_dev, SYS_RES_IRQ,
+ key->irq_rid, key->irq_res);
+ if (key->pin)
+ gpio_pin_release(key->pin);
+ if (callout_pending(&key->repeat_callout))
+ callout_stop(&key->repeat_callout);
+ if (callout_pending(&key->debounce_callout))
+ callout_stop(&key->debounce_callout);
+ GPIOKEY_UNLOCK(key);
+
+ GPIOKEY_LOCK_DESTROY(key);
+}
+
+static int
+gpiokeys_probe(device_t dev)
+{
+ if (!ofw_bus_is_compatible(dev, "gpio-keys"))
+ return (ENXIO);
+
+ device_set_desc(dev, "GPIO keyboard");
+
+ return (0);
+}
+
+static int
+gpiokeys_attach(device_t dev)
+{
+ int unit;
+ struct gpiokeys_softc *sc;
+ keyboard_t *kbd;
+ phandle_t keys, child;
+ int total_keys;
+
+ if ((keys = ofw_bus_get_node(dev)) == -1)
+ return (ENXIO);
+
+ sc = device_get_softc(dev);
+ sc->sc_dev = dev;
+ kbd = &sc->sc_kbd;
+
+ GPIOKEYS_LOCK_INIT(sc);
+ unit = device_get_unit(dev);
+ kbd_init_struct(kbd, "gpiokeys", KB_OTHER, unit, 0, 0, 0);
+
+ kbd->kb_data = (void *)sc;
+ sc->sc_mode = K_XLATE;
+
+ sc->sc_keymap = key_map;
+ sc->sc_accmap = accent_map;
+
+ kbd_set_maps(kbd, &sc->sc_keymap, &sc->sc_accmap,
+ sc->sc_fkeymap, GPIOKEYS_GLOBAL_NFKEY);
+
+ KBD_FOUND_DEVICE(kbd);
+
+ gpiokeys_clear_state(kbd);
+
+ KBD_PROBE_DONE(kbd);
+
+ KBD_INIT_DONE(kbd);
+
+ if (kbd_register(kbd) < 0) {
+ goto detach;
+ }
+
+ KBD_CONFIG_DONE(kbd);
+
+ gpiokeys_enable(kbd);
+
+#ifdef KBD_INSTALL_CDEV
+ if (kbd_attach(kbd)) {
+ goto detach;
+ }
+#endif
+
+ if (bootverbose) {
+ genkbd_diag(kbd, 1);
+ }
+
+ gpiokeys_sc = sc;
+
+ total_keys = 0;
+
+ /* Traverse the 'gpio-keys' node and count keys */
+ for (child = OF_child(keys); child != 0; child = OF_peer(child)) {
+ if (!OF_hasprop(child, "gpios"))
+ continue;
+ total_keys++;
+ }
+
+ if (total_keys) {
+ sc->sc_keys = malloc(sizeof(struct gpiokey) * total_keys,
+ M_DEVBUF, M_WAITOK | M_ZERO);
+
+ sc->sc_total_keys = 0;
+ /* Traverse the 'gpio-keys' node and count keys */
+ for (child = OF_child(keys); child != 0; child = OF_peer(child)) {
+ if (!OF_hasprop(child, "gpios"))
+ continue;
+ gpiokeys_attach_key(sc, child ,&sc->sc_keys[sc->sc_total_keys]);
+ sc->sc_total_keys++;
+ }
+ }
+
+ return (0);
+
+detach:
+ gpiokeys_detach(dev);
+ return (ENXIO);
+}
+
+static int
+gpiokeys_detach(device_t dev)
+{
+ struct gpiokeys_softc *sc;
+ int i;
+
+ sc = device_get_softc(dev);
+
+ for (i = 0; i < sc->sc_total_keys; i++)
+ gpiokeys_detach_key(sc, &sc->sc_keys[i]);
+
+ GPIOKEYS_LOCK_DESTROY(sc);
+ if (sc->sc_keys)
+ free(sc->sc_keys, M_DEVBUF);
+
+ return (0);
+}
+
+/* early keyboard probe, not supported */
+static int
+gpiokeys_configure(int flags)
+{
+ return (0);
+}
+
+/* detect a keyboard, not used */
+static int
+gpiokeys__probe(int unit, void *arg, int flags)
+{
+ return (ENXIO);
+}
+
+/* reset and initialize the device, not used */
+static int
+gpiokeys_init(int unit, keyboard_t **kbdp, void *arg, int flags)
+{
+ return (ENXIO);
+}
+
+/* test the interface to the device, not used */
+static int
+gpiokeys_test_if(keyboard_t *kbd)
+{
+ return (0);
+}
+
+/* finish using this keyboard, not used */
+static int
+gpiokeys_term(keyboard_t *kbd)
+{
+ return (ENXIO);
+}
+
+/* keyboard interrupt routine, not used */
+static int
+gpiokeys_intr(keyboard_t *kbd, void *arg)
+{
+ return (0);
+}
+
+/* lock the access to the keyboard, not used */
+static int
+gpiokeys_lock(keyboard_t *kbd, int lock)
+{
+ return (1);
+}
+
+/*
+ * Enable the access to the device; until this function is called,
+ * the client cannot read from the keyboard.
+ */
+static int
+gpiokeys_enable(keyboard_t *kbd)
+{
+ struct gpiokeys_softc *sc;
+
+ sc = kbd->kb_data;
+ GPIOKEYS_LOCK(sc);
+ KBD_ACTIVATE(kbd);
+ GPIOKEYS_UNLOCK(sc);
+
+ return (0);
+}
+
+/* disallow the access to the device */
+static int
+gpiokeys_disable(keyboard_t *kbd)
+{
+ struct gpiokeys_softc *sc;
+
+ sc = kbd->kb_data;
+ GPIOKEYS_LOCK(sc);
+ KBD_DEACTIVATE(kbd);
+ GPIOKEYS_UNLOCK(sc);
+
+ return (0);
+}
+
+static void
+gpiokeys_do_poll(struct gpiokeys_softc *sc, uint8_t wait)
+{
+
+ KASSERT((sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING) != 0,
+ ("gpiokeys_do_poll called when not polling\n"));
+
+ if (!kdb_active && !SCHEDULER_STOPPED()) {
+ while (sc->sc_inputs == 0) {
+ kern_yield(PRI_UNCHANGED);
+ if (!wait)
+ break;
+ }
+ return;
+ }
+
+ while ((sc->sc_inputs == 0) && wait) {
+ printf("POLL!\n");
+ }
+}
+
+/* check if data is waiting */
+static int
+gpiokeys_check(keyboard_t *kbd)
+{
+ struct gpiokeys_softc *sc = kbd->kb_data;
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (0);
+
+ if (sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING)
+ gpiokeys_do_poll(sc, 0);
+
+ if (sc->sc_inputs > 0) {
+ return (1);
+ }
+ return (0);
+}
+
+/* check if char is waiting */
+static int
+gpiokeys_check_char_locked(keyboard_t *kbd)
+{
+ if (!KBD_IS_ACTIVE(kbd))
+ return (0);
+
+ return (gpiokeys_check(kbd));
+}
+
+static int
+gpiokeys_check_char(keyboard_t *kbd)
+{
+ int result;
+ struct gpiokeys_softc *sc = kbd->kb_data;
+
+ GPIOKEYS_LOCK(sc);
+ result = gpiokeys_check_char_locked(kbd);
+ GPIOKEYS_UNLOCK(sc);
+
+ return (result);
+}
+
+static int32_t
+gpiokeys_get_key(struct gpiokeys_softc *sc, uint8_t wait)
+{
+ int32_t c;
+
+ KASSERT((!kdb_active && !SCHEDULER_STOPPED())
+ || (sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING) != 0,
+ ("not polling in kdb or panic\n"));
+
+ if (sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING)
+ gpiokeys_do_poll(sc, wait);
+
+ if (sc->sc_inputs == 0) {
+ c = -1;
+ } else {
+ c = sc->sc_input[sc->sc_inputhead];
+ --(sc->sc_inputs);
+ ++(sc->sc_inputhead);
+ if (sc->sc_inputhead >= GPIOKEYS_GLOBAL_IN_BUF_SIZE) {
+ sc->sc_inputhead = 0;
+ }
+ }
+
+ return (c);
+}
+
+/* read one byte from the keyboard if it's allowed */
+static int
+gpiokeys_read(keyboard_t *kbd, int wait)
+{
+ struct gpiokeys_softc *sc = kbd->kb_data;
+ int32_t keycode;
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (-1);
+
+ /* XXX */
+ keycode = gpiokeys_get_key(sc, (wait == FALSE) ? 0 : 1);
+ if (!KBD_IS_ACTIVE(kbd) || (keycode == -1))
+ return (-1);
+
+ ++(kbd->kb_count);
+
+ return (keycode);
+}
+
+/* read char from the keyboard */
+static uint32_t
+gpiokeys_read_char_locked(keyboard_t *kbd, int wait)
+{
+ struct gpiokeys_softc *sc = kbd->kb_data;
+ uint32_t action;
+ uint32_t keycode;
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (NOKEY);
+
+next_code:
+
+ /* see if there is something in the keyboard port */
+ /* XXX */
+ keycode = gpiokeys_get_key(sc, (wait == FALSE) ? 0 : 1);
+ ++kbd->kb_count;
+
+ /* return the byte as is for the K_RAW mode */
+ if (sc->sc_mode == K_RAW) {
+ return (keycode);
+ }
+
+ /* return the key code in the K_CODE mode */
+ /* XXX: keycode |= SCAN_RELEASE; */
+
+ if (sc->sc_mode == K_CODE) {
+ return (keycode);
+ }
+
+ /* keycode to key action */
+ action = genkbd_keyaction(kbd, SCAN_CHAR(keycode),
+ (keycode & SCAN_RELEASE),
+ &sc->sc_state, &sc->sc_accents);
+ if (action == NOKEY) {
+ goto next_code;
+ }
+
+ return (action);
+}
+
+/* Currently wait is always false. */
+static uint32_t
+gpiokeys_read_char(keyboard_t *kbd, int wait)
+{
+ uint32_t keycode;
+ struct gpiokeys_softc *sc = kbd->kb_data;
+
+ GPIOKEYS_LOCK(sc);
+ keycode = gpiokeys_read_char_locked(kbd, wait);
+ GPIOKEYS_UNLOCK(sc);
+
+ return (keycode);
+}
+
+/* some useful control functions */
+static int
+gpiokeys_ioctl_locked(keyboard_t *kbd, u_long cmd, caddr_t arg)
+{
+ struct gpiokeys_softc *sc = kbd->kb_data;
+#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
+ defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
+ int ival;
+
+#endif
+
+ switch (cmd) {
+ case KDGKBMODE: /* get keyboard mode */
+ *(int *)arg = sc->sc_mode;
+ break;
+#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
+ defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
+ case _IO('K', 7):
+ ival = IOCPARM_IVAL(arg);
+ arg = (caddr_t)&ival;
+ /* FALLTHROUGH */
+#endif
+ case KDSKBMODE: /* set keyboard mode */
+ switch (*(int *)arg) {
+ case K_XLATE:
+ if (sc->sc_mode != K_XLATE) {
+ /* make lock key state and LED state match */
+ sc->sc_state &= ~LOCK_MASK;
+ sc->sc_state |= KBD_LED_VAL(kbd);
+ }
+ /* FALLTHROUGH */
+ case K_RAW:
+ case K_CODE:
+ if (sc->sc_mode != *(int *)arg) {
+ if ((sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING) == 0)
+ gpiokeys_clear_state(kbd);
+ sc->sc_mode = *(int *)arg;
+ }
+ break;
+ default:
+ return (EINVAL);
+ }
+ break;
+
+ case KDGETLED: /* get keyboard LED */
+ *(int *)arg = KBD_LED_VAL(kbd);
+ break;
+#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
+ defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
+ case _IO('K', 66):
+ ival = IOCPARM_IVAL(arg);
+ arg = (caddr_t)&ival;
+ /* FALLTHROUGH */
+#endif
+ case KDSETLED: /* set keyboard LED */
+ KBD_LED_VAL(kbd) = *(int *)arg;
+ break;
+ case KDGKBSTATE: /* get lock key state */
+ *(int *)arg = sc->sc_state & LOCK_MASK;
+ break;
+#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
+ defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
+ case _IO('K', 20):
+ ival = IOCPARM_IVAL(arg);
+ arg = (caddr_t)&ival;
+ /* FALLTHROUGH */
+#endif
+ case KDSKBSTATE: /* set lock key state */
+ if (*(int *)arg & ~LOCK_MASK) {
+ return (EINVAL);
+ }
+ sc->sc_state &= ~LOCK_MASK;
+ sc->sc_state |= *(int *)arg;
+ return (0);
+
+ case KDSETREPEAT: /* set keyboard repeat rate (new
+ * interface) */
+ if (!KBD_HAS_DEVICE(kbd)) {
+ return (0);
+ }
+ if (((int *)arg)[1] < 0) {
+ return (EINVAL);
+ }
+ if (((int *)arg)[0] < 0) {
+ return (EINVAL);
+ }
+ if (((int *)arg)[0] < 200) /* fastest possible value */
+ kbd->kb_delay1 = 200;
+ else
+ kbd->kb_delay1 = ((int *)arg)[0];
+ kbd->kb_delay2 = ((int *)arg)[1];
+ return (0);
+
+#if defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD5) || \
+ defined(COMPAT_FREEBSD4) || defined(COMPAT_43)
+ case _IO('K', 67):
+ ival = IOCPARM_IVAL(arg);
+ arg = (caddr_t)&ival;
+ /* FALLTHROUGH */
+#endif
+ case KDSETRAD: /* set keyboard repeat rate (old
+ * interface) */
+ return (gpiokeys_set_typematic(kbd, *(int *)arg));
+
+ case PIO_KEYMAP: /* set keyboard translation table */
+ case OPIO_KEYMAP: /* set keyboard translation table
+ * (compat) */
+ case PIO_KEYMAPENT: /* set keyboard translation table
+ * entry */
+ case PIO_DEADKEYMAP: /* set accent key translation table */
+ sc->sc_accents = 0;
+ /* FALLTHROUGH */
+ default:
+ return (genkbd_commonioctl(kbd, cmd, arg));
+ }
+
+ return (0);
+}
+
+static int
+gpiokeys_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
+{
+ int result;
+ struct gpiokeys_softc *sc;
+
+ sc = kbd->kb_data;
+ /*
+ * XXX Check if someone is calling us from a critical section:
+ */
+ if (curthread->td_critnest != 0)
+ return (EDEADLK);
+
+ GPIOKEYS_LOCK(sc);
+ result = gpiokeys_ioctl_locked(kbd, cmd, arg);
+ GPIOKEYS_UNLOCK(sc);
+
+ return (result);
+}
+
+/* clear the internal state of the keyboard */
+static void
+gpiokeys_clear_state(keyboard_t *kbd)
+{
+ struct gpiokeys_softc *sc = kbd->kb_data;
+
+ sc->sc_flags &= ~(GPIOKEYS_GLOBAL_FLAG_POLLING);
+ sc->sc_state &= LOCK_MASK; /* preserve locking key state */
+ sc->sc_accents = 0;
+}
+
+/* get the internal state, not used */
+static int
+gpiokeys_get_state(keyboard_t *kbd, void *buf, size_t len)
+{
+ return (len == 0) ? 1 : -1;
+}
+
+/* set the internal state, not used */
+static int
+gpiokeys_set_state(keyboard_t *kbd, void *buf, size_t len)
+{
+ return (EINVAL);
+}
+
+static int
+gpiokeys_poll(keyboard_t *kbd, int on)
+{
+ struct gpiokeys_softc *sc = kbd->kb_data;
+
+ GPIOKEYS_LOCK(sc);
+ if (on)
+ sc->sc_flags |= GPIOKEYS_GLOBAL_FLAG_POLLING;
+ else
+ sc->sc_flags &= ~GPIOKEYS_GLOBAL_FLAG_POLLING;
+ GPIOKEYS_UNLOCK(sc);
+
+ return (0);
+}
+
+static int
+gpiokeys_set_typematic(keyboard_t *kbd, int code)
+{
+ static const int delays[] = {250, 500, 750, 1000};
+ static const int rates[] = {34, 38, 42, 46, 50, 55, 59, 63,
+ 68, 76, 84, 92, 100, 110, 118, 126,
+ 136, 152, 168, 184, 200, 220, 236, 252,
+ 272, 304, 336, 368, 400, 440, 472, 504};
+
+ if (code & ~0x7f) {
+ return (EINVAL);
+ }
+ kbd->kb_delay1 = delays[(code >> 5) & 3];
+ kbd->kb_delay2 = rates[code & 0x1f];
+ return (0);
+}
+
+static void
+gpiokeys_event_keyinput(struct gpiokeys_softc *sc)
+{
+ int c;
+
+ if ((sc->sc_flags & GPIOKEYS_GLOBAL_FLAG_POLLING) != 0)
+ return;
+
+ if (sc->sc_inputs == 0)
+ return;
+
+ if (KBD_IS_ACTIVE(&sc->sc_kbd) &&
+ KBD_IS_BUSY(&sc->sc_kbd)) {
+ /* let the callback function process the input */
+ (sc->sc_kbd.kb_callback.kc_func) (&sc->sc_kbd, KBDIO_KEYINPUT,
+ sc->sc_kbd.kb_callback.kc_arg);
+ } else {
+ /* read and discard the input, no one is waiting for it */
+ do {
+ c = gpiokeys_read_char(&sc->sc_kbd, 0);
+ } while (c != NOKEY);
+ }
+}
+
+static keyboard_switch_t gpiokeyssw = {
+ .probe = &gpiokeys__probe,
+ .init = &gpiokeys_init,
+ .term = &gpiokeys_term,
+ .intr = &gpiokeys_intr,
+ .test_if = &gpiokeys_test_if,
+ .enable = &gpiokeys_enable,
+ .disable = &gpiokeys_disable,
+ .read = &gpiokeys_read,
+ .check = &gpiokeys_check,
+ .read_char = &gpiokeys_read_char,
+ .check_char = &gpiokeys_check_char,
+ .ioctl = &gpiokeys_ioctl,
+ .lock = &gpiokeys_lock,
+ .clear_state = &gpiokeys_clear_state,
+ .get_state = &gpiokeys_get_state,
+ .set_state = &gpiokeys_set_state,
+ .get_fkeystr = &genkbd_get_fkeystr,
+ .poll = &gpiokeys_poll,
+ .diag = &genkbd_diag,
+};
+
+KEYBOARD_DRIVER(gpiokeys, gpiokeyssw, gpiokeys_configure);
+
+static int
+gpiokeys_driver_load(module_t mod, int what, void *arg)
+{
+ switch (what) {
+ case MOD_LOAD:
+ kbd_add_driver(&gpiokeys_kbd_driver);
+ break;
+ case MOD_UNLOAD:
+ kbd_delete_driver(&gpiokeys_kbd_driver);
+ break;
+ }
+ return (0);
+}
+
+static devclass_t gpiokeys_devclass;
+
+static device_method_t gpiokeys_methods[] = {
+ DEVMETHOD(device_probe, gpiokeys_probe),
+ DEVMETHOD(device_attach, gpiokeys_attach),
+ DEVMETHOD(device_detach, gpiokeys_detach),
+
+ DEVMETHOD_END
+};
+
+static driver_t gpiokeys_driver = {
+ "gpiokeys",
+ gpiokeys_methods,
+ sizeof(struct gpiokeys_softc),
+};
+
+DRIVER_MODULE(gpiokeys, simplebus, gpiokeys_driver, gpiokeys_devclass, gpiokeys_driver_load, 0);
+MODULE_VERSION(gpiokeys, 1);
Index: sys/dev/gpio/gpiokeys_codes.c
===================================================================
--- /dev/null
+++ sys/dev/gpio/gpiokeys_codes.c
@@ -0,0 +1,148 @@
+/*-
+ * Copyright (c) 2015 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <dev/gpio/gpiokeys.h>
+#include <gnu/dts/include/dt-bindings/input/linux-event-codes.h>
+
+struct gpiokeys_codemap_entry {
+ uint32_t linux_code;
+ uint32_t bsd_code;
+};
+
+static struct gpiokeys_codemap_entry gpiokeys_codes_map[] = {
+ { KEY_ESC, 1},
+ { KEY_1, 2},
+ { KEY_2, 3},
+ { KEY_3, 4},
+ { KEY_4, 5},
+ { KEY_5, 6},
+ { KEY_6, 7},
+ { KEY_7, 8},
+ { KEY_8, 9},
+ { KEY_9, 10},
+ { KEY_0, 11},
+ { KEY_MINUS, 12},
+ { KEY_EQUAL, 13},
+ { KEY_BACKSPACE, 14},
+
+ { KEY_TAB, 15},
+ { KEY_Q, 16},
+ { KEY_W, 17},
+ { KEY_E, 18},
+ { KEY_R, 19},
+ { KEY_T, 20},
+ { KEY_Y, 21},
+ { KEY_U, 22},
+ { KEY_I, 23},
+ { KEY_O, 24},
+ { KEY_P, 25},
+ { KEY_LEFTBRACE, 26},
+ { KEY_RIGHTBRACE, 27},
+
+ { KEY_ENTER, 28},
+ { KEY_LEFTCTRL, 29},
+ { KEY_A, 30},
+ { KEY_S, 31},
+ { KEY_D, 32},
+ { KEY_F, 33},
+ { KEY_G, 34},
+ { KEY_H, 35},
+ { KEY_J, 36},
+ { KEY_K, 37},
+ { KEY_L, 38},
+ { KEY_SEMICOLON, 39},
+ { KEY_APOSTROPHE, 40},
+ { KEY_GRAVE, 41},
+
+ { KEY_LEFTSHIFT, 42},
+ { KEY_BACKSLASH, 43},
+ { KEY_Z, 44},
+ { KEY_X, 45},
+ { KEY_C, 46},
+ { KEY_V, 47},
+ { KEY_B, 48},
+ { KEY_N, 49},
+ { KEY_M, 50},
+ { KEY_COMMA, 51},
+ { KEY_DOT, 52},
+ { KEY_SLASH, 53},
+ { KEY_RIGHTSHIFT, 54},
+
+ { KEY_LEFTALT, 56},
+ { KEY_SPACE, 57},
+ { KEY_CAPSLOCK, 58},
+
+ { KEY_F1, 59},
+ { KEY_F2, 60},
+ { KEY_F3, 61},
+ { KEY_F4, 62},
+ { KEY_F5, 63},
+ { KEY_F6, 64},
+ { KEY_F7, 65},
+ { KEY_F8, 66},
+ { KEY_F9, 67},
+ { KEY_F10, 68},
+ { KEY_F11, 87},
+ { KEY_F12, 88},
+
+ { KEY_RIGHTCTRL, 90},
+ { KEY_SYSRQ, 92},
+ { KEY_RIGHTALT, 93},
+
+ { KEY_HOME, GPIOKEY_E0(71)},
+ { KEY_UP, GPIOKEY_E0(72)},
+ { KEY_PAGEUP, GPIOKEY_E0(73)},
+ { KEY_LEFT, GPIOKEY_E0(75)},
+ { KEY_RIGHT, GPIOKEY_E0(77)},
+ { KEY_END, GPIOKEY_E0(79)},
+ { KEY_DOWN, GPIOKEY_E0(80)},
+ { KEY_PAGEDOWN, GPIOKEY_E0(81)},
+ { KEY_INSERT, GPIOKEY_E0(82)},
+ { KEY_DELETE, GPIOKEY_E0(83)},
+
+ { GPIOKEY_NONE, GPIOKEY_NONE}
+};
+
+uint32_t
+gpiokey_map_linux_code(uint32_t linux_code)
+{
+ int i;
+
+ i = 0;
+
+ for (i = 0; gpiokeys_codes_map[i].linux_code != GPIOKEY_NONE; i++) {
+ if (gpiokeys_codes_map[i].linux_code == linux_code)
+ return (gpiokeys_codes_map[i].bsd_code);
+ }
+
+ return (GPIOKEY_NONE);
+}

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