281 lines
8.6 KiB
C
281 lines
8.6 KiB
C
/* $NetBSD: toastersensors.c,v 1.12 2014/02/25 18:30:08 pooka Exp $ */
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/*-
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* Copyright (c) 2005 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is from software contributed to The NetBSD Foundation
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* by Jesse Off.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: toastersensors.c,v 1.12 2014/02/25 18:30:08 pooka Exp $");
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/poll.h>
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#include <sys/conf.h>
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#include <sys/uio.h>
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#include <sys/types.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/callout.h>
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#include <sys/select.h>
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#include <sys/bus.h>
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#include <machine/autoconf.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wskbdvar.h>
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#include <dev/wscons/wsksymdef.h>
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#include <dev/wscons/wsksymvar.h>
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#include <arm/ep93xx/ep93xxreg.h>
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#include <arm/ep93xx/epgpioreg.h>
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#include <dev/ic/matrixkpvar.h>
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#include <evbarm/tsarm/tspldvar.h>
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#include <evbarm/tsarm/tsarmreg.h>
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struct toastersensors_softc {
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struct matrixkp_softc sc_mxkp;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_gpioh;
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bus_space_handle_t sc_adch;
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uint32_t toast_down;
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uint32_t burnlevel_knob;
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uint32_t cancel_key;
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uint32_t toast_key;
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uint32_t frozen_key;
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uint32_t warm_key;
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uint32_t bagel_key;
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uint32_t toast_down_ticks;
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uint32_t cancel_key_ticks;
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uint32_t toast_key_ticks;
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uint32_t frozen_key_ticks;
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uint32_t warm_key_ticks;
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uint32_t bagel_key_ticks;
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struct callout poll;
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};
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#define KC(n) KS_KEYCODE(n)
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static const keysym_t mxkp_keydesc_default[] = {
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/* pos normal shifted */
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KC(0), KS_f,
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KC(1), KS_b,
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KC(2), KS_w,
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KC(3), KS_t,
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KC(4), KS_c,
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};
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#undef KC
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#define KBD_MAP(name, base, map) \
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{ name, base, sizeof(map)/sizeof(keysym_t), map }
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const struct wscons_keydesc mxkp_keydesctab[] = {
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KBD_MAP(KB_US, 0, mxkp_keydesc_default),
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{0, 0, 0, 0}
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};
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#undef KBD_MAP
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struct wskbd_mapdata mxkp_keymapdata = {
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mxkp_keydesctab,
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KB_US,
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};
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static int toastersensors_match(device_t, cfdata_t, void *);
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static void toastersensors_attach(device_t, device_t, void *);
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static void toastersensors_scankeys(struct matrixkp_softc *, uint32_t *);
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static void toastersensors_poll(void *);
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CFATTACH_DECL_NEW(toastersensors, sizeof(struct toastersensors_softc),
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toastersensors_match, toastersensors_attach, NULL, NULL);
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static int
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toastersensors_match(device_t parent, cfdata_t match, void *aux)
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{
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return 1;
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}
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#define GPIO_GET(x) bus_space_read_1(sc->sc_iot, sc->sc_gpioh, \
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(EP93XX_GPIO_ ## x))
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#define GPIO_SET(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \
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(EP93XX_GPIO_ ## x), (y))
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#define GPIO_SETBITS(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \
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(EP93XX_GPIO_ ## x), GPIO_GET(x) | (y))
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#define GPIO_CLEARBITS(x, y) bus_space_write_1(sc->sc_iot, sc->sc_gpioh, \
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(EP93XX_GPIO_ ## x), GPIO_GET(x) & (~(y)))
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static void
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toastersensors_poll(void *arg)
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{
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struct toastersensors_softc *sc = arg;
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if (sc->cancel_key) sc->cancel_key_ticks++;
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if (sc->toast_key) sc->toast_key_ticks++;
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if (sc->warm_key) sc->warm_key_ticks++;
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if (sc->frozen_key) sc->frozen_key_ticks++;
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if (sc->bagel_key) sc->bagel_key_ticks++;
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if (sc->toast_down) sc->toast_down_ticks++;
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sc->burnlevel_knob = bus_space_read_1(sc->sc_iot, sc->sc_adch, 0) |
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(bus_space_read_1(sc->sc_iot, sc->sc_adch, 1) << 8);
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/* Initiate another conversion */
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bus_space_write_1(sc->sc_iot, sc->sc_adch, 0, 0x40);
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callout_schedule(&sc->poll, 1);
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}
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static void
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toastersensors_attach(device_t parent, device_t self, void *aux)
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{
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struct toastersensors_softc *sc = device_private(self);
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struct tspld_attach_args *taa = aux;
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struct wskbddev_attach_args wa;
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const struct sysctlnode *node, *datnode;
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uint32_t i;
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sc->sc_iot = taa->ta_iot;
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if (bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_GPIO,
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EP93XX_APB_GPIO_SIZE, 0, &sc->sc_gpioh))
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panic("toastersensors_attach: couldn't map GPIO registers");
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if (bus_space_map(sc->sc_iot, TS7XXX_IO8_HWBASE + TS7XXX_MAX197ADC,
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2, 0, &sc->sc_adch))
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panic("toastersensors_attach: couldn't map MAX197-ADC registers");
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sc->sc_mxkp.mxkp_scankeys = toastersensors_scankeys;
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sc->sc_mxkp.mxkp_event = mxkp_wskbd_event;
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sc->sc_mxkp.mxkp_nkeys = 5;
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sc->sc_mxkp.debounce_stable_ms = 3;
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sc->sc_mxkp.sc_dev = self;
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sc->sc_mxkp.poll_freq = hz;
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GPIO_CLEARBITS(PBDDR, 0x3f); /* tristate all lines */
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aprint_normal(": internal toaster sensor inputs\n");
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aprint_normal_dev(self, "using signal DIO_0 for toast down sensor\n");
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aprint_normal_dev(self, "using signals DIO_1-DIO_5 for panel buttons\n");
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aprint_normal_dev(self, "using 12-bit MAX197-ADC channel 0 for burnlevel knob\n");
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if (sysctl_createv(NULL, 0, NULL, &node,
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0, CTLTYPE_NODE, device_xname(self),
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NULL,
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NULL, 0, NULL, 0,
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CTL_HW, CTL_CREATE, CTL_EOL) != 0) {
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printf("%s: could not create sysctl\n",
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device_xname(self));
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return;
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}
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if ((i = sysctl_createv(NULL, 0, NULL, &datnode,
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0, CTLTYPE_INT,
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"burnlevel_knob",
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SYSCTL_DESCR(
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"12-bit analog reading of front-panel potentiometer"),
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NULL, 0, &sc->burnlevel_knob, 0,
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CTL_HW, node->sysctl_num,
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CTL_CREATE, CTL_EOL))
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!= 0) {
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printf("%s: could not create sysctl\n",
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device_xname(self));
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return;
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}
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#define KEYSYSCTL_SETUP(x) if ((i = sysctl_createv(NULL, 0, NULL, &datnode, \
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0, CTLTYPE_INT, \
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#x, \
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SYSCTL_DESCR( \
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"toaster user input sensor"), \
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NULL, 0, &sc->x, 0, \
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CTL_HW, node->sysctl_num, \
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CTL_CREATE, CTL_EOL)) \
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!= 0) { \
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printf("%s: could not create sysctl\n", \
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device_xname(self)); \
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return; \
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} \
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\
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if ((i = sysctl_createv(NULL, 0, NULL, &datnode, \
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CTLFLAG_READWRITE, CTLTYPE_INT, \
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#x "_ticks", \
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SYSCTL_DESCR( \
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"running total of on-time in ticks"), \
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NULL, 0, &sc->x ## _ticks, 0, \
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CTL_HW, node->sysctl_num, \
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CTL_CREATE, CTL_EOL)) \
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!= 0) { \
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printf("%s: could not create sysctl\n", \
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device_xname(self)); \
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return; \
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} \
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KEYSYSCTL_SETUP(cancel_key);
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KEYSYSCTL_SETUP(toast_key);
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KEYSYSCTL_SETUP(bagel_key);
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KEYSYSCTL_SETUP(warm_key);
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KEYSYSCTL_SETUP(frozen_key);
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KEYSYSCTL_SETUP(toast_down);
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sc->cancel_key_ticks = 0;
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sc->toast_key_ticks = 0;
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sc->frozen_key_ticks = 0;
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sc->warm_key_ticks = 0;
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sc->bagel_key_ticks = 0;
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sc->toast_down_ticks = 0;
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mxkp_attach(&sc->sc_mxkp);
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wa.console = 0;
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wa.keymap = &mxkp_keymapdata;
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wa.accessops = &mxkp_accessops;
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wa.accesscookie = &sc->sc_mxkp;
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sc->sc_mxkp.sc_wskbddev = config_found(self, &wa, wskbddevprint);
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callout_init(&sc->poll, 0);
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callout_setfunc(&sc->poll, toastersensors_poll, sc);
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callout_schedule(&sc->poll, 1);
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}
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static void
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toastersensors_scankeys(struct matrixkp_softc *mxkp_sc, uint32_t *keys)
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{
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struct toastersensors_softc *sc = device_private(mxkp_sc->sc_dev);
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uint32_t val = GPIO_GET(PBDR) & 0x3f;
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/*
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* toast_down isn't a key, but we update its state here since its
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* read in the same reg.
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*/
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sc->toast_down = (val & 0x1) ? 0 : 1;
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*keys = ~(val >> 1);
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sc->cancel_key = (*keys & 0x10) ? 1 : 0;
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sc->toast_key = (*keys & 0x8) ? 1 : 0;
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sc->warm_key = (*keys & 0x4) ? 1 : 0;
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sc->bagel_key = (*keys & 0x2) ? 1 : 0;
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sc->frozen_key = (*keys & 0x1) ? 1 : 0;
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}
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