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/* $OpenBSD: omap_com.c,v 1.3 2010/08/30 21:32:20 deraadt Exp $ */
/*
* Copyright 2003 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Steve C. Woodford for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/tty.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
/* pick up armv7_a4x_bs_tag */
#include <arch/arm/armv7/armv7var.h>
#include <arch/beagle/beagle/ahb.h>
#define com_isr 8
#define ISR_RECV (ISR_RXPL | ISR_XMODE | ISR_RCVEIR)
int omapuart_match(struct device *, void *, void *);
void omapuart_attach(struct device *, struct device *, void *);
int omapuart_activate(struct device *, int);
void omapuart_power(int why, void *);
struct cfattach com_ahb_ca = {
sizeof (struct com_softc), omapuart_match, omapuart_attach, NULL,
omapuart_activate
};
int
omapuart_match(struct device *parent, void *cf, void *aux)
{
struct ahb_attach_args *aa = aux;
bus_space_tag_t bt = &armv7_a4x_bs_tag; /* XXX: This sucks */
bus_space_handle_t bh;
int rv;
/* XXX */
if (aa->aa_addr == 0x4806A000 && aa->aa_intr == 72)
return 1;
if (aa->aa_addr == 0x4806C000 && aa->aa_intr == 73)
return 1;
if (aa->aa_addr == 0x4806E000 && aa->aa_intr == 74)
return 1;
{
extern bus_addr_t comconsaddr;
if (comconsaddr == aa->aa_addr)
return (1);
}
if (bus_space_map(bt, aa->aa_addr, aa->aa_size, 0, &bh))
return (0);
/* Make sure the UART is enabled - XXX */
bus_space_write_1(bt, bh, com_ier, IER_EUART);
rv = comprobe1(bt, bh);
bus_space_unmap(bt, bh, aa->aa_size);
return (rv);
}
void
omapuart_attach(struct device *parent, struct device *self, void *aux)
{
struct com_softc *sc = (struct com_softc *)self;
struct ahb_attach_args *aa = aux;
sc->sc_iot = &armv7_a4x_bs_tag; /* XXX: This sucks */
sc->sc_iobase = aa->aa_addr;
sc->sc_frequency = 48000000;
sc->sc_uarttype = COM_UART_TI16750;
bus_space_map(sc->sc_iot, sc->sc_iobase, aa->aa_size, 0, &sc->sc_ioh);
com_attach_subr(sc);
(void)intc_intr_establish(aa->aa_intr, IPL_TTY, comintr,
sc, sc->sc_dev.dv_xname);
#if 0
(void)powerhook_establish(&omapuart_powerhook, sc);
#endif
}
int
omapuart_activate(struct device *self, int act)
{
struct com_softc *sc = (struct com_softc *)self;
bus_space_tag_t iot = sc->sc_iot;
bus_space_handle_t ioh = sc->sc_ioh;
struct tty *tp = sc->sc_tty;
switch (act) {
case DVACT_SUSPEND:
break;
case DVACT_RESUME:
if (sc->enabled) {
sc->sc_initialize = 1;
comparam(tp, &tp->t_termios);
bus_space_write_1(iot, ioh, com_ier, sc->sc_ier);
if (ISSET(sc->sc_hwflags, COM_HW_SIR)) {
bus_space_write_1(iot, ioh, com_isr,
ISR_RECV);
}
}
break;
}
return 0;
}
#if 0
void
omapuart_power(int why, void *arg)
{
omapuart_activate(arg, why);
}
#endif
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