143 lines
4.3 KiB
C
143 lines
4.3 KiB
C
/* $Id: mpcsa_cf.c,v 1.3 2012/10/27 17:17:48 chs Exp $ */
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/* $NetBSD: mpcsa_cf.c,v 1.3 2012/10/27 17:17:48 chs Exp $ */
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/*
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* Copyright (c) 2007 Embedtronics Oy. All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: mpcsa_cf.c,v 1.3 2012/10/27 17:17:48 chs Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <arm/at91/at91reg.h>
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#include <arm/at91/at91var.h>
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#include <arm/at91/at91cfvar.h>
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#include <arm/at91/at91piovar.h>
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#ifdef MPCA_CF_DEBUG
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int mpcsa_cf_debug = MPCA_CF_DEBUG;
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#define DPRINTFN(n,x) if (mpcsa_cf_debug>(n)) printf x;
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#else
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#define DPRINTFN(n,x)
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#endif
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struct at91_gpio_softc;
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struct mpcsa_cf_softc {
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struct at91cf_softc sc_dev;
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struct at91pio_softc *sc_pioc;
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};
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static int mpcsa_cf_match(device_t, cfdata_t, void *);
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static void mpcsa_cf_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(mpcsa_cf, sizeof(struct mpcsa_cf_softc),
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mpcsa_cf_match, mpcsa_cf_attach, NULL, NULL);
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static int mpcsa_cf_power_ctl(void *self, int onoff);
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static int mpcsa_cf_card_detect(void *self);
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static int mpcsa_cf_irq_line(void *self);
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static void * mpcsa_cf_intr_establish(void *self, int which, int ipl, int (*ih_func)(void *), void *arg);
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static void mpcsa_cf_intr_disestablish(void *self, int which, void *cookie);
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struct at91cf_chipset_tag mpcsa_cf_tag = {
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mpcsa_cf_power_ctl,
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mpcsa_cf_card_detect,
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mpcsa_cf_irq_line,
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mpcsa_cf_intr_establish,
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mpcsa_cf_intr_disestablish
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};
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static int
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mpcsa_cf_match(device_t parent, cfdata_t match, void *aux)
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{
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if (strcmp(match->cf_name, "at91cf") == 0 && strcmp(match->cf_atname, "mpcsa_cf") == 0)
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return 2;
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return 0;
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}
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static void
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mpcsa_cf_attach(device_t parent, device_t self, void *aux)
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{
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struct mpcsa_cf_softc *sc = device_private(self);
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// at91cf_chipset_tag_t cscf = sc->sc_dev.sc_cscf;
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struct at91pio_softc *pioc;
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if ((pioc = at91pio_sc(AT91_PIOC)) == NULL) {
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printf("no PIOC!\n");
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return;
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}
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// configure PIO!
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sc->sc_pioc = pioc;
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at91pio_in(sc->sc_pioc, 3); // CFIRQ
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at91pio_in(sc->sc_pioc, 4); // CFCD
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at91pio_out(sc->sc_pioc, 5); // CFRESET
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// and call common routine
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at91cf_attach_common(parent, self, aux, &mpcsa_cf_tag);
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}
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static int
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mpcsa_cf_power_ctl(void *self, int onoff)
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{
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struct mpcsa_cf_softc *sc = self;
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if (onoff) {
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at91pio_set(sc->sc_pioc, 5);
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return 20000;
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} else {
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at91pio_clear(sc->sc_pioc, 5);
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return 20000;
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}
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}
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static int mpcsa_cf_card_detect(void *self)
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{
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struct mpcsa_cf_softc *sc = self;
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return at91pio_read(sc->sc_pioc, 4) == 0;
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}
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static int mpcsa_cf_irq_line(void *self)
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{
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struct mpcsa_cf_softc *sc = self;
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return at91pio_read(sc->sc_pioc, 3);
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}
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static void * mpcsa_cf_intr_establish(void *self, int which, int ipl, int (*ih_func)(void *), void *ih_arg)
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{
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struct mpcsa_cf_softc *sc = self;
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return at91pio_intr_establish(sc->sc_pioc, which == CD_IRQ ? 4 : 3,
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ipl, ih_func, ih_arg);
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}
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static void mpcsa_cf_intr_disestablish(void *self, int which, void *cookie)
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{
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struct mpcsa_cf_softc *sc = self;
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at91pio_intr_disestablish(sc->sc_pioc, which == CD_IRQ ? 4 : 3, cookie);
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}
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