/* $NetBSD: tskp.c,v 1.12 2021/08/07 16:18:50 thorpej Exp $ */
/*-
* Copyright (c) 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is from software contributed to The NetBSD Foundation
* by Jesse Off.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
__KERNEL_RCSID(0, "$NetBSD: tskp.c,v 1.12 2021/08/07 16:18:50 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/poll.h>
#include <sys/conf.h>
#include <sys/uio.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/callout.h>
#include <sys/select.h>
#include <sys/bus.h>
#include <machine/autoconf.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wskbdvar.h>
#include <dev/wscons/wsksymdef.h>
#include <dev/wscons/wsksymvar.h>
#include <arm/ep93xx/ep93xxreg.h>
#include <arm/ep93xx/epgpioreg.h>
#include <dev/ic/matrixkpvar.h>
#include <evbarm/tsarm/tspldvar.h>
#include <evbarm/tsarm/tsarmreg.h>
struct tskp_softc {
struct matrixkp_softc sc_mxkp;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_gpioh;
};
#define KC(n) KS_KEYCODE(n)
static const keysym_t mxkp_keydesc_default[] = {
/* pos normal shifted */
KC(0), KS_1,
KC(1), KS_2,
KC(2), KS_3,
KC(3), KS_A,
KC(4), KS_4,
KC(5), KS_5,
KC(6), KS_6,
KC(7), KS_B,
KC(8), KS_7,
KC(9), KS_8,
KC(10), KS_9,
KC(11), KS_C,
KC(12), KS_asterisk,
KC(13), KS_0,
KC(14), KS_numbersign,
KC(15), KS_D,
};
#undef KC
#define KBD_MAP(name, base, map) \
{ name, base, sizeof(map)/sizeof(keysym_t), map }
const struct wscons_keydesc mxkp_keydesctab[] = {
KBD_MAP(KB_US, 0, mxkp_keydesc_default),
{0, 0, 0, 0}
};
#undef KBD_MAP
struct wskbd_mapdata mxkp_keymapdata = {
mxkp_keydesctab,
KB_US,
};
static int tskp_match(device_t, cfdata_t, void *);
static void tskp_attach(device_t, device_t, void *);
static void tskp_scankeys(struct matrixkp_softc *, uint32_t *);
CFATTACH_DECL_NEW(tskp, sizeof(struct tskp_softc),
tskp_match, tskp_attach, NULL, NULL);
static int
tskp_match(device_t parent, cfdata_t match, void *aux)
{
return 1;
}
#define GPIO_GET(x) bus_space_read_1(sc->sc_iot, sc->sc_gpioh, \
(EP93XX_GPIO_ ## x))
#define GPIO_SET(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \
(EP93XX_GPIO_ ## x), (y))
#define GPIO_SETBITS(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \
(EP93XX_GPIO_ ## x), GPIO_GET(x) | (y))
#define GPIO_CLEARBITS(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \
(EP93XX_GPIO_ ## x), GPIO_GET(x) & (~(y)))
static void
tskp_attach(device_t parent, device_t self, void *aux)
{
struct tskp_softc *sc = device_private(self);
struct tspld_attach_args *taa = aux;
struct wskbddev_attach_args wa;
sc->sc_iot = taa->ta_iot;
if (bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_GPIO,
EP93XX_APB_GPIO_SIZE, 0, &sc->sc_gpioh))
panic("tskp_attach: couldn't map GPIO registers");
sc->sc_mxkp.mxkp_scankeys = tskp_scankeys;
sc->sc_mxkp.mxkp_event = mxkp_wskbd_event;
sc->sc_mxkp.mxkp_nkeys = 16; /* 4 x 4 matrix keypad */
sc->sc_mxkp.debounce_stable_ms = 3;
sc->sc_mxkp.sc_dev = self;
sc->sc_mxkp.poll_freq = hz;
GPIO_SET(PBDDR, 0xff); /* tristate all lines */
printf(": 4x4 matrix keypad, polling at %d hz\n", hz);
mxkp_attach(&sc->sc_mxkp);
wa.console = 0;
wa.keymap = &mxkp_keymapdata;
wa.accessops = &mxkp_accessops;
wa.accesscookie = &sc->sc_mxkp;
sc->sc_mxkp.sc_wskbddev = config_found(self, &wa, wskbddevprint,
CFARGS_NONE);
}
static void
tskp_scankeys(struct matrixkp_softc *mxkp_sc, uint32_t *keys)
{
struct tskp_softc *sc = device_private(mxkp_sc->sc_dev);
uint32_t pos;
for(pos = 0; pos < 4; pos++) {
GPIO_SET(PBDDR, (1 << pos));
GPIO_SET(PBDR, ~(1 << pos));
delay(1);
keys[0] |= (~(GPIO_GET(PBDR) >> 4) & 0xf) << (4 * pos);
}
}
