arm: Remove samsung exnynos port

Remove the exynos SoC support, this haven't been updated in a while,
isn't present in GENERIC and nobody is motivated to resurect it.

Differential Revision:	https://reviews.freebsd.org/D24444

1 files changed, 0 insertions, 915 deletions

diff --git a/sys/arm/samsung/exynos/chrome_kb.c b/sys/arm/samsung/exynos/chrome_kb.c
deleted file mode 100644
index 972ff81483d6..000000000000
--- a/sys/arm/samsung/exynos/chrome_kb.c
+++ /dev/null
@@ -1,915 +0,0 @@
-/*-
- * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
- * 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.
- */
-
-/*
- * Samsung Chromebook Keyboard
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/bus.h>
-#include <sys/kernel.h>
-#include <sys/module.h>
-#include <sys/malloc.h>
-#include <sys/rman.h>
-#include <sys/proc.h>
-#include <sys/sched.h>
-#include <sys/kdb.h>
-#include <sys/timeet.h>
-#include <sys/timetc.h>
-#include <sys/mutex.h>
-#include <sys/gpio.h>
-
-#include <dev/ofw/openfirm.h>
-#include <dev/ofw/ofw_bus.h>
-#include <dev/ofw/ofw_bus_subr.h>
-
-#include <sys/ioccom.h>
-#include <sys/filio.h>
-#include <sys/kbio.h>
-
-#include <machine/bus.h>
-#include <machine/cpu.h>
-#include <machine/intr.h>
-
-#include "gpio_if.h"
-
-#include <arm/samsung/exynos/chrome_ec.h>
-#include <arm/samsung/exynos/chrome_kb.h>
-
-#include <arm/samsung/exynos/exynos5_combiner.h>
-#include <arm/samsung/exynos/exynos5_pad.h>
-
-#define	CKB_LOCK()	mtx_lock(&Giant)
-#define	CKB_UNLOCK()	mtx_unlock(&Giant)
-
-#ifdef	INVARIANTS
-/*
- * Assert that the lock is held in all contexts
- * where the code can be executed.
- */
-#define	CKB_LOCK_ASSERT()	mtx_assert(&Giant, MA_OWNED)
-/*
- * Assert that the lock is held in the contexts
- * where it really has to be so.
- */
-#define	CKB_CTX_LOCK_ASSERT()			 	\
-	do {						\
-		if (!kdb_active && !KERNEL_PANICKED())	\
-			mtx_assert(&Giant, MA_OWNED);	\
-	} while (0)
-#else
-#define CKB_LOCK_ASSERT()	(void)0
-#define CKB_CTX_LOCK_ASSERT()	(void)0
-#endif
-
-/*
- * Define a stub keyboard driver in case one hasn't been
- * compiled into the kernel
- */
-#include <sys/kbio.h>
-#include <dev/kbd/kbdreg.h>
-#include <dev/kbd/kbdtables.h>
-
-#define	CKB_NFKEY		12
-#define	CKB_FLAG_COMPOSE	0x1
-#define	CKB_FLAG_POLLING	0x2
-#define	KBD_DRIVER_NAME		"ckbd"
-
-struct ckb_softc {
-	keyboard_t sc_kbd;
-	keymap_t sc_keymap;
-	accentmap_t sc_accmap;
-	fkeytab_t sc_fkeymap[CKB_NFKEY];
-
-	struct resource*	sc_mem_res;
-	struct resource*	sc_irq_res;
-	void*			sc_intr_hl;
-
-	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_flags;	/* flags */
-
-	struct callout		sc_repeat_callout;
-	int			sc_repeat_key;
-	int			sc_repeating;
-
-	int			flag;
-	int			rows;
-	int			cols;
-	int			gpio;
-	device_t		dev;
-	device_t		gpio_dev;
-	struct thread		*sc_poll_thread;
-	uint16_t		*keymap;
-
-	uint8_t			*scan_local;
-	uint8_t			*scan;
-};
-
-/* prototypes */
-static int	ckb_set_typematic(keyboard_t *, int);
-static uint32_t	ckb_read_char(keyboard_t *, int);
-static void	ckb_clear_state(keyboard_t *);
-static int	ckb_ioctl(keyboard_t *, u_long, caddr_t);
-static int	ckb_enable(keyboard_t *);
-static int	ckb_disable(keyboard_t *);
-
-static void
-ckb_repeat(void *arg)
-{
-	struct ckb_softc *sc;
-
-	sc = arg;
-
-	if (KBD_IS_ACTIVE(&sc->sc_kbd) && KBD_IS_BUSY(&sc->sc_kbd)) {
-		if (sc->sc_repeat_key != -1) {
-			sc->sc_repeating = 1;
-			sc->sc_kbd.kb_callback.kc_func(&sc->sc_kbd,
-			    KBDIO_KEYINPUT, sc->sc_kbd.kb_callback.kc_arg);
-		}
-	}
-}
-
-/* detect a keyboard, not used */
-static int
-ckb__probe(int unit, void *arg, int flags)
-{
-
-	return (ENXIO);
-}
-
-/* reset and initialize the device, not used */
-static int
-ckb_init(int unit, keyboard_t **kbdp, void *arg, int flags)
-{
-
-	return (ENXIO);
-}
-
-/* test the interface to the device, not used */
-static int
-ckb_test_if(keyboard_t *kbd)
-{
-
-	return (0);
-}
-
-/* finish using this keyboard, not used */
-static int
-ckb_term(keyboard_t *kbd)
-{
-
-	return (ENXIO);
-}
-
-/* keyboard interrupt routine, not used */
-static int
-ckb_intr(keyboard_t *kbd, void *arg)
-{
-
-	return (0);
-}
-
-/* lock the access to the keyboard, not used */
-static int
-ckb_lock(keyboard_t *kbd, int lock)
-{
-
-	return (1);
-}
-
-/* clear the internal state of the keyboard */
-static void
-ckb_clear_state(keyboard_t *kbd)
-{
-	struct ckb_softc *sc;
-
-	sc = kbd->kb_data;
-
-	CKB_CTX_LOCK_ASSERT();
-
-	sc->sc_flags &= ~(CKB_FLAG_COMPOSE | CKB_FLAG_POLLING);
-	sc->sc_state &= LOCK_MASK; /* preserve locking key state */
-	sc->sc_accents = 0;
-}
-
-/* save the internal state, not used */
-static int
-ckb_get_state(keyboard_t *kbd, void *buf, size_t len)
-{
-
-	return (len == 0) ? 1 : -1;
-}
-
-/* set the internal state, not used */
-static int
-ckb_set_state(keyboard_t *kbd, void *buf, size_t len)
-{
-
-	return (EINVAL);
-}
-
-/* check if data is waiting */
-static int
-ckb_check(keyboard_t *kbd)
-{
-	struct ckb_softc *sc;
-	int i;
-
-	sc = kbd->kb_data;
-
-	CKB_CTX_LOCK_ASSERT();
-
-	if (!KBD_IS_ACTIVE(kbd))
-		return (0);
-
-	if (sc->sc_flags & CKB_FLAG_POLLING) {
-		return (1);
-	}
-
-	for (i = 0; i < sc->cols; i++)
-		if (sc->scan_local[i] != sc->scan[i]) {
-			return (1);
-		}
-
-	if (sc->sc_repeating)
-		return (1);
-
-	return (0);
-}
-
-/* check if char is waiting */
-static int
-ckb_check_char_locked(keyboard_t *kbd)
-{
-	CKB_CTX_LOCK_ASSERT();
-
-	if (!KBD_IS_ACTIVE(kbd))
-		return (0);
-
-	return (ckb_check(kbd));
-}
-
-static int
-ckb_check_char(keyboard_t *kbd)
-{
-	int result;
-
-	CKB_LOCK();
-	result = ckb_check_char_locked(kbd);
-	CKB_UNLOCK();
-
-	return (result);
-}
-
-/* read one byte from the keyboard if it's allowed */
-/* Currently unused. */
-static int
-ckb_read(keyboard_t *kbd, int wait)
-{
-	CKB_CTX_LOCK_ASSERT();
-
-	if (!KBD_IS_ACTIVE(kbd))
-		return (-1);
-
-	printf("Implement ME: %s\n", __func__);
-	return (0);
-}
-
-static uint16_t
-keymap_read(struct ckb_softc *sc, int col, int row)
-{
-
-	KASSERT(sc->keymap != NULL, ("keymap_read: no keymap"));
-	if (col >= 0 && col < sc->cols &&
-	    row >= 0 && row < sc->rows) {
-		return sc->keymap[row * sc->cols + col];
-	}
-
-	return (0);
-}
-
-static int
-keymap_write(struct ckb_softc *sc, int col, int row, uint16_t key)
-{
-
-	KASSERT(sc->keymap != NULL, ("keymap_write: no keymap"));
-	if (col >= 0 && col < sc->cols &&
-	    row >= 0 && row < sc->rows) {
-		sc->keymap[row * sc->cols + col] = key;
-		return (0);
-	}
-
-	return (-1);
-}
-
-/* read char from the keyboard */
-static uint32_t
-ckb_read_char_locked(keyboard_t *kbd, int wait)
-{
-	struct ckb_softc *sc;
-	int i,j;
-	uint16_t key;
-	int oldbit;
-	int newbit;
-	int status;
-
-	sc = kbd->kb_data;
-
-	CKB_CTX_LOCK_ASSERT();
-
-	if (!KBD_IS_ACTIVE(kbd))
-		return (NOKEY);
-
-	if (sc->sc_repeating) {
-		sc->sc_repeating = 0;
-		callout_reset(&sc->sc_repeat_callout, hz / 10,
-                    ckb_repeat, sc);
-		return (sc->sc_repeat_key);
-	}
-
-	if (sc->sc_flags & CKB_FLAG_POLLING) {
-		for (;;) {
-			GPIO_PIN_GET(sc->gpio_dev, sc->gpio, &status);
-			if (status == 0) {
-				if (ec_command(EC_CMD_MKBP_STATE, sc->scan,
-					sc->cols,
-				    sc->scan, sc->cols)) {
-					return (NOKEY);
-				}
-				break;
-			}
-			if (!wait) {
-				return (NOKEY);
-			}
-			DELAY(1000);
-		}
-	}
-
-	for (i = 0; i < sc->cols; i++) {
-		for (j = 0; j < sc->rows; j++) {
-			oldbit = (sc->scan_local[i] & (1 << j));
-			newbit = (sc->scan[i] & (1 << j));
-
-			if (oldbit == newbit)
-				continue;
-
-			key = keymap_read(sc, i, j);
-			if (key == 0) {
-				continue;
-			}
-
-			if (newbit > 0) {
-				/* key pressed */
-				sc->scan_local[i] |= (1 << j);
-
-				/* setup repeating */
-				sc->sc_repeat_key = key;
-				callout_reset(&sc->sc_repeat_callout,
-				    hz / 2, ckb_repeat, sc);
-
-			} else {
-				/* key released */
-				sc->scan_local[i] &= ~(1 << j);
-
-				/* release flag */
-				key |= 0x80;
-
-				/* unsetup repeating */
-				sc->sc_repeat_key = -1;
-				callout_stop(&sc->sc_repeat_callout);
-			}
-
-			return (key);
-		}
-	}
-
-	return (NOKEY);
-}
-
-/* Currently wait is always false. */
-static uint32_t
-ckb_read_char(keyboard_t *kbd, int wait)
-{
-	uint32_t keycode;
-
-	CKB_LOCK();
-	keycode = ckb_read_char_locked(kbd, wait);
-	CKB_UNLOCK();
-
-	return (keycode);
-}
-
-/* some useful control functions */
-static int
-ckb_ioctl_locked(keyboard_t *kbd, u_long cmd, caddr_t arg)
-{
-	struct ckb_softc *sc;
-	int i;
-
-	sc = kbd->kb_data;
-
-	CKB_LOCK_ASSERT();
-
-	switch (cmd) {
-	case KDGKBMODE:		/* get keyboard mode */
-		*(int *)arg = sc->sc_mode;
-		break;
-
-	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 & CKB_FLAG_POLLING) == 0)
-					ckb_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;
-
-	case KDSETLED:			/* set keyboard LED */
-		/* NOTE: lock key state in "sc_state" won't be changed */
-		if (*(int *)arg & ~LOCK_MASK)
-			return (EINVAL);
-
-		i = *(int *)arg;
-
-		/* replace CAPS LED with ALTGR LED for ALTGR keyboards */
-		if (sc->sc_mode == K_XLATE &&
-		    kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
-			if (i & ALKED)
-				i |= CLKED;
-			else
-				i &= ~CLKED;
-		}
-		if (KBD_HAS_DEVICE(kbd)) {
-			/* Configure LED */
-		}
-
-		KBD_LED_VAL(kbd) = *(int *)arg;
-		break;
-	case KDGKBSTATE:		/* get lock key state */
-		*(int *)arg = sc->sc_state & LOCK_MASK;
-		break;
-
-	case KDSKBSTATE:		/* set lock key state */
-		if (*(int *)arg & ~LOCK_MASK) {
-			return (EINVAL);
-		}
-		sc->sc_state &= ~LOCK_MASK;
-		sc->sc_state |= *(int *)arg;
-
-		/* set LEDs and quit */
-		return (ckb_ioctl(kbd, KDSETLED, arg));
-
-	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);
-
-	case KDSETRAD:			/* set keyboard repeat rate (old
-					 * interface) */
-		return (ckb_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
-ckb_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
-{
-	int result;
-
-	/*
-	 * XXX KDGKBSTATE, KDSKBSTATE and KDSETLED can be called from any
-	 * context where printf(9) can be called, which among other things
-	 * includes interrupt filters and threads with any kinds of locks
-	 * already held.  For this reason it would be dangerous to acquire
-	 * the Giant here unconditionally.  On the other hand we have to
-	 * have it to handle the ioctl.
-	 * So we make our best effort to auto-detect whether we can grab
-	 * the Giant or not.  Blame syscons(4) for this.
-	 */
-	switch (cmd) {
-	case KDGKBSTATE:
-	case KDSKBSTATE:
-	case KDSETLED:
-		if (!mtx_owned(&Giant) && !SCHEDULER_STOPPED())
-			return (EDEADLK);	/* best I could come up with */
-		/* FALLTHROUGH */
-	default:
-		CKB_LOCK();
-		result = ckb_ioctl_locked(kbd, cmd, arg);
-		CKB_UNLOCK();
-		return (result);
-	}
-}
-
-/*
- * Enable the access to the device; until this function is called,
- * the client cannot read from the keyboard.
- */
-static int
-ckb_enable(keyboard_t *kbd)
-{
-
-	CKB_LOCK();
-	KBD_ACTIVATE(kbd);
-	CKB_UNLOCK();
-
-	return (0);
-}
-
-/* disallow the access to the device */
-static int
-ckb_disable(keyboard_t *kbd)
-{
-
-	CKB_LOCK();
-	KBD_DEACTIVATE(kbd);
-	CKB_UNLOCK();
-
-	return (0);
-}
-
-/* local functions */
-
-static int
-ckb_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 int
-ckb_poll(keyboard_t *kbd, int on)
-{
-	struct ckb_softc *sc;
-
-	sc = kbd->kb_data;
-
-	CKB_LOCK();
-	if (on) {
-		sc->sc_flags |= CKB_FLAG_POLLING;
-		sc->sc_poll_thread = curthread;
-	} else {
-		sc->sc_flags &= ~CKB_FLAG_POLLING;
-	}
-	CKB_UNLOCK();
-
-	return (0);
-}
-
-/* local functions */
-
-static int dummy_kbd_configure(int flags);
-
-keyboard_switch_t ckbdsw = {
-	.probe = &ckb__probe,
-	.init = &ckb_init,
-	.term = &ckb_term,
-	.intr = &ckb_intr,
-	.test_if = &ckb_test_if,
-	.enable = &ckb_enable,
-	.disable = &ckb_disable,
-	.read = &ckb_read,
-	.check = &ckb_check,
-	.read_char = &ckb_read_char,
-	.check_char = &ckb_check_char,
-	.ioctl = &ckb_ioctl,
-	.lock = &ckb_lock,
-	.clear_state = &ckb_clear_state,
-	.get_state = &ckb_get_state,
-	.set_state = &ckb_set_state,
-	.poll = &ckb_poll,
-};
-
-static int
-dummy_kbd_configure(int flags)
-{
-
-	return (0);
-}
-
-KEYBOARD_DRIVER(ckbd, ckbdsw, dummy_kbd_configure);
-
-/* 
- * Parses 'keymap' into sc->keymap.
- * Requires sc->cols and sc->rows to be set.
- */
-static int
-parse_keymap(struct ckb_softc *sc, pcell_t *keymap, size_t len)
-{
-	int i;
-
-	sc->keymap = malloc(sc->cols * sc->rows * sizeof(sc->keymap[0]),
-	    M_DEVBUF, M_NOWAIT | M_ZERO);
-	if (sc->keymap == NULL) {
-		return (ENOMEM);
-	}
-
-	for (i = 0; i < len; i++) {
-		/* 
-		 * Return value is ignored, we just write whatever fits into
-		 * specified number of rows and columns and silently ignore
-		 * everything else.
-		 * Keymap entries follow this format: 0xRRCCKKKK
-		 * RR - row number, CC - column number, KKKK - key code
-		 */
-		keymap_write(sc, (keymap[i] >> 16) & 0xff,
-		    (keymap[i] >> 24) & 0xff,
-		    keymap[i] & 0xffff);
-	}
-
-	return (0);
-}
-
-/* Allocates a new array for keymap and returns it in 'keymap'. */
-static int
-read_keymap(phandle_t node, const char *prop, pcell_t **keymap, size_t *len)
-{
-
-	if ((*len = OF_getproplen(node, prop)) <= 0) {
-		return (ENXIO);
-	}
-	if ((*keymap = malloc(*len, M_DEVBUF, M_NOWAIT)) == NULL) {
-		return (ENOMEM);
-	}
-	if (OF_getencprop(node, prop, *keymap, *len) != *len) {
-		return (ENXIO);
-	}
-	return (0);
-}
-
-static int
-parse_dts(struct ckb_softc *sc)
-{
-	phandle_t node;
-	pcell_t dts_value;
-	pcell_t *keymap;
-	int len, ret;
-	const char *keymap_prop = NULL;
-
-	if ((node = ofw_bus_get_node(sc->dev)) == -1)
-		return (ENXIO);
-
-	if ((len = OF_getproplen(node, "google,key-rows")) <= 0)
-		return (ENXIO);
-	OF_getencprop(node, "google,key-rows", &dts_value, len);
-	sc->rows = dts_value;
-
-	if ((len = OF_getproplen(node, "google,key-columns")) <= 0)
-		return (ENXIO);
-	OF_getencprop(node, "google,key-columns", &dts_value, len);
-	sc->cols = dts_value;
-
-	if ((len = OF_getproplen(node, "freebsd,intr-gpio")) <= 0)
-		return (ENXIO);
-	OF_getencprop(node, "freebsd,intr-gpio", &dts_value, len);
-	sc->gpio = dts_value;
-
-	if (OF_hasprop(node, "freebsd,keymap")) {
-		keymap_prop = "freebsd,keymap";
-		device_printf(sc->dev, "using FreeBSD-specific keymap from FDT\n");
-	} else if (OF_hasprop(node, "linux,keymap")) {
-		keymap_prop = "linux,keymap";
-		device_printf(sc->dev, "using Linux keymap from FDT\n");
-	} else {
-		device_printf(sc->dev, "using built-in keymap\n");
-	}
-
-	if (keymap_prop != NULL) {
-		if ((ret = read_keymap(node, keymap_prop, &keymap, &len))) {
-			device_printf(sc->dev,
-			     "failed to read keymap from FDT: %d\n", ret);
-			return (ret);
-		}
-		ret = parse_keymap(sc, keymap, len);
-		free(keymap, M_DEVBUF);
-		if (ret) {
-			return (ret);
-		}
-	} else {
-		if ((ret = parse_keymap(sc, default_keymap, KEYMAP_LEN))) {
-			return (ret);
-		}
-	}
-
-	if ((sc->rows == 0) || (sc->cols == 0) || (sc->gpio == 0))
-		return (ENXIO);
-
-	return (0);
-}
-
-void
-ckb_ec_intr(void *arg)
-{
-	struct ckb_softc *sc;
-
-	sc = arg;
-
-	if (sc->sc_flags & CKB_FLAG_POLLING)
-		return;
-
-	ec_command(EC_CMD_MKBP_STATE, sc->scan, sc->cols,
-	    sc->scan, sc->cols);
-
-	(sc->sc_kbd.kb_callback.kc_func) (&sc->sc_kbd, KBDIO_KEYINPUT,
-	    sc->sc_kbd.kb_callback.kc_arg);
-};
-
-static int
-chrome_kb_attach(device_t dev)
-{
-	struct ckb_softc *sc;
-	keyboard_t *kbd;
-	int error;
-	int rid;
-	int i;
-
-	sc = device_get_softc(dev);
-
-	sc->dev = dev;
-	sc->keymap = NULL;
-
-	if ((error = parse_dts(sc)) != 0)
-		return error;
-
-	sc->gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
-	if (sc->gpio_dev == NULL) {
-		device_printf(sc->dev, "Can't find gpio device.\n");
-		return (ENXIO);
-	}
-
-#if 0
-	device_printf(sc->dev, "Keyboard matrix [%dx%d]\n",
-	    sc->cols, sc->rows);
-#endif
-
-	pad_setup_intr(sc->gpio, ckb_ec_intr, sc);
-
-	kbd = &sc->sc_kbd;
-	rid = 0;
-
-	sc->scan_local = malloc(sc->cols, M_DEVBUF, M_NOWAIT);
-	sc->scan = malloc(sc->cols, M_DEVBUF, M_NOWAIT);
-
-	for (i = 0; i < sc->cols; i++) {
-		sc->scan_local[i] = 0;
-		sc->scan[i] = 0;
-	}
-
-	kbd_init_struct(kbd, KBD_DRIVER_NAME, KB_OTHER,
-	    device_get_unit(dev), 0, 0, 0);
-	kbd->kb_data = (void *)sc;
-
-	sc->sc_keymap = key_map;
-        sc->sc_accmap = accent_map;
-	for (i = 0; i < CKB_NFKEY; i++) {
-		sc->sc_fkeymap[i] = fkey_tab[i];
-        }
-
-	kbd_set_maps(kbd, &sc->sc_keymap, &sc->sc_accmap,
-	    sc->sc_fkeymap, CKB_NFKEY);
-
-	KBD_FOUND_DEVICE(kbd);
-	ckb_clear_state(kbd);
-	KBD_PROBE_DONE(kbd);
-
-	callout_init(&sc->sc_repeat_callout, 0);
-
-	KBD_INIT_DONE(kbd);
-
-	if (kbd_register(kbd) < 0) {
-		return (ENXIO);
-	}
-	KBD_CONFIG_DONE(kbd);
-
-	return (0);
-}
-
-static int
-chrome_kb_probe(device_t dev)
-{
-
-	if (!ofw_bus_status_okay(dev))
-		return (ENXIO);
-
-	if (ofw_bus_is_compatible(dev, "google,cros-ec-keyb") ||
-	    ofw_bus_is_compatible(dev, "google,mkbp-keyb")) {
-		device_set_desc(dev, "Chrome EC Keyboard");
-		return (BUS_PROBE_DEFAULT);
-	}
-
-	return (ENXIO);
-}
-
-static int
-chrome_kb_detach(device_t dev)
-{
-	struct ckb_softc *sc;
-
-	sc = device_get_softc(dev);
-
-	if (sc->keymap != NULL) {
-		free(sc->keymap, M_DEVBUF);
-	}
-
-	return 0;
-}
-
-static device_method_t chrome_kb_methods[] = {
-	DEVMETHOD(device_probe,		chrome_kb_probe),
-	DEVMETHOD(device_attach,	chrome_kb_attach),
-	DEVMETHOD(device_detach,	chrome_kb_detach),
-	{ 0, 0 }
-};
-
-static driver_t chrome_kb_driver = {
-	"chrome_kb",
-	chrome_kb_methods,
-	sizeof(struct ckb_softc),
-};
-
-static devclass_t chrome_kb_devclass;
-
-DRIVER_MODULE(chrome_kb, simplebus, chrome_kb_driver,
-    chrome_kb_devclass, 0, 0);