1057 lines
24 KiB
C
1057 lines
24 KiB
C
/*-
|
|
* 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>
|
|
#include "opt_platform.h"
|
|
#include "opt_kbd.h"
|
|
#include "opt_evdev.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/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>
|
|
|
|
#ifdef EVDEV_SUPPORT
|
|
#include <dev/evdev/evdev.h>
|
|
#include <dev/evdev/input.h>
|
|
#endif
|
|
|
|
#define KBD_DRIVER_NAME "gpiokeys"
|
|
|
|
#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 GPIOKEYS_ASSERT_LOCKED(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED)
|
|
|
|
#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 gpiokeys_softc;
|
|
|
|
struct gpiokey
|
|
{
|
|
struct gpiokeys_softc *parent_sc;
|
|
gpio_pin_t pin;
|
|
int irq_rid;
|
|
struct resource *irq_res;
|
|
void *intr_hl;
|
|
struct mtx mtx;
|
|
#ifdef EVDEV_SUPPORT
|
|
uint32_t evcode;
|
|
#endif
|
|
uint32_t keycode;
|
|
int autorepeat;
|
|
struct callout debounce_callout;
|
|
struct callout repeat_callout;
|
|
int repeat_delay;
|
|
int repeat;
|
|
int debounce_interval;
|
|
};
|
|
|
|
struct gpiokeys_softc
|
|
{
|
|
device_t sc_dev;
|
|
struct mtx sc_mtx;
|
|
struct gpiokey *sc_keys;
|
|
int sc_total_keys;
|
|
|
|
#ifdef EVDEV_SUPPORT
|
|
struct evdev_dev *sc_evdev;
|
|
#endif
|
|
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;
|
|
};
|
|
|
|
/* 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)
|
|
{
|
|
|
|
GPIOKEYS_ASSERT_LOCKED(sc);
|
|
|
|
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(struct gpiokeys_softc *sc, struct gpiokey *key, int pressed)
|
|
{
|
|
uint32_t code;
|
|
|
|
GPIOKEYS_LOCK(sc);
|
|
#ifdef EVDEV_SUPPORT
|
|
if (key->evcode != GPIOKEY_NONE &&
|
|
(evdev_rcpt_mask & EVDEV_RCPT_HW_KBD) != 0) {
|
|
evdev_push_key(sc->sc_evdev, key->evcode, pressed);
|
|
evdev_sync(sc->sc_evdev);
|
|
}
|
|
if (evdev_is_grabbed(sc->sc_evdev)) {
|
|
GPIOKEYS_UNLOCK(sc);
|
|
return;
|
|
}
|
|
#endif
|
|
if (key->keycode != GPIOKEY_NONE) {
|
|
code = key->keycode & SCAN_KEYCODE_MASK;
|
|
if (!pressed)
|
|
code |= KEY_RELEASE;
|
|
|
|
if (key->keycode & SCAN_PREFIX_E0)
|
|
gpiokeys_put_key(sc, 0xe0);
|
|
else if (key->keycode & SCAN_PREFIX_E1)
|
|
gpiokeys_put_key(sc, 0xe1);
|
|
|
|
gpiokeys_put_key(sc, code);
|
|
}
|
|
GPIOKEYS_UNLOCK(sc);
|
|
|
|
if (key->keycode != GPIOKEY_NONE)
|
|
gpiokeys_event_keyinput(sc);
|
|
}
|
|
|
|
static void
|
|
gpiokey_autorepeat(void *arg)
|
|
{
|
|
struct gpiokey *key;
|
|
|
|
key = arg;
|
|
|
|
gpiokeys_key_event(key->parent_sc, key, 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;
|
|
|
|
gpio_pin_is_active(key->pin, &active);
|
|
if (active) {
|
|
gpiokeys_key_event(key->parent_sc, key, 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->parent_sc, key, 0);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gpiokey_intr(void *arg)
|
|
{
|
|
struct gpiokey *key;
|
|
int debounce_ticks;
|
|
|
|
key = arg;
|
|
|
|
GPIOKEY_LOCK(key);
|
|
debounce_ticks = (hz * key->debounce_interval) / 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);
|
|
key->parent_sc = sc;
|
|
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", (void **)&name) == -1)
|
|
OF_getprop_alloc(node, "name", (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, "debounce-interval", &prop, sizeof(prop))) > 0)
|
|
key->debounce_interval = fdt32_to_cpu(prop);
|
|
else
|
|
key->debounce_interval = 5;
|
|
|
|
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);
|
|
#ifdef EVDEV_SUPPORT
|
|
key->evcode = code;
|
|
evdev_support_key(sc->sc_evdev, code);
|
|
#endif
|
|
}
|
|
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)
|
|
OF_prop_free(name);
|
|
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)
|
|
OF_prop_free(name);
|
|
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)
|
|
OF_prop_free(name);
|
|
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)
|
|
OF_prop_free(name);
|
|
}
|
|
|
|
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 (callout_pending(&key->repeat_callout))
|
|
callout_drain(&key->repeat_callout);
|
|
if (callout_pending(&key->debounce_callout))
|
|
callout_drain(&key->debounce_callout);
|
|
if (key->pin)
|
|
gpio_pin_release(key->pin);
|
|
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)
|
|
{
|
|
struct gpiokeys_softc *sc;
|
|
keyboard_t *kbd;
|
|
#ifdef EVDEV_SUPPORT
|
|
char *name;
|
|
#endif
|
|
phandle_t keys, child;
|
|
int total_keys;
|
|
int unit;
|
|
|
|
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, KBD_DRIVER_NAME, 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) {
|
|
kbdd_diag(kbd, 1);
|
|
}
|
|
|
|
#ifdef EVDEV_SUPPORT
|
|
sc->sc_evdev = evdev_alloc();
|
|
evdev_set_name(sc->sc_evdev, device_get_desc(dev));
|
|
|
|
OF_getprop_alloc(keys, "name", (void **)&name);
|
|
evdev_set_phys(sc->sc_evdev, name != NULL ? name : "unknown");
|
|
OF_prop_free(name);
|
|
|
|
evdev_set_id(sc->sc_evdev, BUS_VIRTUAL, 0, 0, 0);
|
|
evdev_support_event(sc->sc_evdev, EV_SYN);
|
|
evdev_support_event(sc->sc_evdev, EV_KEY);
|
|
#endif
|
|
|
|
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++;
|
|
}
|
|
}
|
|
|
|
#ifdef EVDEV_SUPPORT
|
|
if (evdev_register_mtx(sc->sc_evdev, &sc->sc_mtx) != 0) {
|
|
device_printf(dev, "failed to register evdev device\n");
|
|
goto detach;
|
|
}
|
|
#endif
|
|
|
|
return (0);
|
|
|
|
detach:
|
|
gpiokeys_detach(dev);
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
gpiokeys_detach(device_t dev)
|
|
{
|
|
struct gpiokeys_softc *sc;
|
|
keyboard_t *kbd;
|
|
int i;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
for (i = 0; i < sc->sc_total_keys; i++)
|
|
gpiokeys_detach_key(sc, &sc->sc_keys[i]);
|
|
|
|
kbd = kbd_get_keyboard(kbd_find_keyboard(KBD_DRIVER_NAME,
|
|
device_get_unit(dev)));
|
|
|
|
#ifdef KBD_INSTALL_CDEV
|
|
kbd_detach(kbd);
|
|
#endif
|
|
kbd_unregister(kbd);
|
|
|
|
#ifdef EVDEV_SUPPORT
|
|
evdev_free(sc->sc_evdev);
|
|
#endif
|
|
|
|
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"));
|
|
|
|
GPIOKEYS_ASSERT_LOCKED(sc);
|
|
|
|
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;
|
|
|
|
GPIOKEYS_ASSERT_LOCKED(sc);
|
|
|
|
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"));
|
|
|
|
GPIOKEYS_ASSERT_LOCKED(sc);
|
|
|
|
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 PIO_KEYMAPENT: /* set keyboard translation table
|
|
* entry */
|
|
case PIO_DEADKEYMAP: /* set accent key translation table */
|
|
#ifdef COMPAT_FREEBSD13
|
|
case OPIO_KEYMAP: /* set keyboard translation table
|
|
* (compat) */
|
|
case OPIO_DEADKEYMAP: /* set accent key translation table
|
|
* (compat) */
|
|
#endif /* COMPAT_FREEBSD13 */
|
|
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)
|
|
{
|
|
if (code & ~0x7f) {
|
|
return (EINVAL);
|
|
}
|
|
kbd->kb_delay1 = kbdelays[(code >> 5) & 3];
|
|
kbd->kb_delay2 = kbrates[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 (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,
|
|
.poll = &gpiokeys_poll,
|
|
};
|
|
|
|
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 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_driver_load, NULL);
|
|
MODULE_VERSION(gpiokeys, 1);
|