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/* $OpenBSD: pxa2x0_com.c,v 1.12 2010/09/07 16:21:35 deraadt Exp $ */
/* $NetBSD: pxa2x0_com.c,v 1.4 2003/07/15 00:24:55 lukem 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.
*/
#ifndef COM_PXA2X0
#error "You must use options COM_PXA2X0 to get PXA2x0 serial port support"
#endif
#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>
#define com_isr 8
#define ISR_RECV (ISR_RXPL | ISR_XMODE | ISR_RCVEIR)
#include <arm/xscale/pxa2x0reg.h>
#include <arm/xscale/pxa2x0var.h>
#ifdef __zaurus__
#include <zaurus/dev/zaurus_scoopvar.h>
#endif
int pxauart_match(struct device *, void *, void *);
void pxauart_attach(struct device *, struct device *, void *);
int pxauart_activate(struct device *, int);
struct cfattach com_pxaip_ca = {
sizeof (struct com_softc), pxauart_match, pxauart_attach, NULL,
pxauart_activate
};
int
pxauart_match(struct device *parent, void *cf, void *aux)
{
struct pxaip_attach_args *pxa = aux;
bus_space_tag_t bt = &pxa2x0_a4x_bs_tag; /* XXX: This sucks */
bus_space_handle_t bh;
int rv;
switch (pxa->pxa_addr) {
case PXA2X0_FFUART_BASE:
if (pxa->pxa_intr != PXA2X0_INT_FFUART)
return (0);
break;
case PXA2X0_STUART_BASE:
if (pxa->pxa_intr != PXA2X0_INT_STUART)
return (0);
break;
case PXA2X0_BTUART_BASE: /* XXX: Config file option ... */
if (pxa->pxa_intr != PXA2X0_INT_BTUART)
return (0);
break;
default:
return (0);
}
pxa->pxa_size = 0x20;
{
extern bus_addr_t comconsaddr;
if (comconsaddr == pxa->pxa_addr)
return (1);
}
if (bus_space_map(bt, pxa->pxa_addr, pxa->pxa_size, 0, &bh))
return (0);
/* Make sure the UART is enabled */
bus_space_write_1(bt, bh, com_ier, IER_EUART);
rv = comprobe1(bt, bh);
bus_space_unmap(bt, bh, pxa->pxa_size);
return (rv);
}
void
pxauart_attach(struct device *parent, struct device *self, void *aux)
{
struct com_softc *sc = (struct com_softc *)self;
struct pxaip_attach_args *pxa = aux;
sc->sc_iot = &pxa2x0_a4x_bs_tag; /* XXX: This sucks */
sc->sc_iobase = pxa->pxa_addr;
sc->sc_frequency = PXA2X0_COM_FREQ;
sc->sc_uarttype = COM_UART_PXA2X0;
#if 0
if (com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) == 0 &&
bus_space_map(sc->sc_iot, sc->sc_iobase, pxa->pxa_size, 0,
&sc->sc_ioh)) {
printf(": can't map registers\n");
return;
}
#endif
bus_space_map(sc->sc_iot, sc->sc_iobase, pxa->pxa_size, 0, &sc->sc_ioh);
com_attach_subr(sc);
(void)pxa2x0_intr_establish(pxa->pxa_intr, IPL_TTY, comintr,
sc, sc->sc_dev.dv_xname);
}
int
pxauart_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:
#ifdef __zaurus__
if (sc->enabled && ISSET(sc->sc_hwflags, COM_HW_SIR))
scoop_set_irled(0);
#endif
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)) {
#ifdef __zaurus__
scoop_set_irled(1);
#endif
bus_space_write_1(iot, ioh, com_isr,
ISR_RECV);
}
}
break;
}
return 0;
}
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