Date: Wed, 11 May 2016 17:57:26 +0000 (UTC) From: Oleksandr Tymoshenko <gonzo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r299475 - in head/sys: conf dev/gpio Message-ID: <201605111757.u4BHvQpe055062@repo.freebsd.org>
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Author: gonzo Date: Wed May 11 17:57:26 2016 New Revision: 299475 URL: https://svnweb.freebsd.org/changeset/base/299475 Log: Add gpiokeys driver gpiokey driver implements functional subset of gpiokeys device-tree bindings: https://www.kernel.org/doc/Documentation/devicetree/bindings/input/gpio-keys.txt It acts as a virtual keyboard, so keys are visible through kbdmux(4) Driver maps linux scancodes for most common keys to FreeBSD scancodes and also extends spec by introducing freebsd,code property to specify FreeBSD-native scancodes. Reviewed by: mmel, jmcneill Differential Revision: https://reviews.freebsd.org/D6279 Added: head/sys/dev/gpio/gpiokeys.c (contents, props changed) head/sys/dev/gpio/gpiokeys.h (contents, props changed) head/sys/dev/gpio/gpiokeys_codes.c (contents, props changed) Modified: head/sys/conf/files Modified: head/sys/conf/files ============================================================================== --- head/sys/conf/files Wed May 11 17:55:09 2016 (r299474) +++ head/sys/conf/files Wed May 11 17:57:26 2016 (r299475) @@ -1513,6 +1513,8 @@ dev/gem/if_gem.c optional gem 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 \ Added: head/sys/dev/gpio/gpiokeys.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/gpio/gpiokeys.c Wed May 11 17:57:26 2016 (r299475) @@ -0,0 +1,1006 @@ +/*- + * 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 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; + 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; + + 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, uint16_t keycode, int pressed) +{ + uint32_t key; + + + key = keycode & SCAN_KEYCODE_MASK; + + if (!pressed) + key |= KEY_RELEASE; + + GPIOKEYS_LOCK(sc); + if (keycode & SCAN_PREFIX_E0) + gpiokeys_put_key(sc, 0xe0); + else if (keycode & SCAN_PREFIX_E1) + gpiokeys_put_key(sc, 0xe1); + + gpiokeys_put_key(sc, key); + GPIOKEYS_UNLOCK(sc); + + gpiokeys_event_keyinput(sc); +} + +static void +gpiokey_autorepeat(void *arg) +{ + struct gpiokey *key; + + key = arg; + + if (key->keycode == GPIOKEY_NONE) + return; + + gpiokeys_key_event(key->parent_sc, 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->parent_sc, 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->parent_sc, key->keycode, 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", 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, "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); + } + 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_drain(&key->repeat_callout); + if (callout_pending(&key->debounce_callout)) + callout_drain(&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); + } + + 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")); + + 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 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 (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); *** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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