/*	$NetBSD: tx39ir.c,v 1.1 2000/01/13 17:53:35 uch Exp $ */

/*
 * Copyright (c) 2000, by UCHIYAMA Yasushi
 * All rights reserved.
 *
 * 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. The name of the developer may NOT be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 */

/*
 * TX39 IR module (connected to UARTB)
 */
#undef TX39IRDEBUG
#include "opt_tx39_debug.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/bus.h>
#include <machine/intr.h>

#include <hpcmips/tx/tx39var.h>
#include <hpcmips/tx/tx39icureg.h>
#include <hpcmips/tx/tx39irvar.h>
#include <hpcmips/tx/tx39irreg.h>

#include <hpcmips/tx/tx39clockreg.h> /* XXX */

#ifdef TX39IRDEBUG
int	tx39ir_debug = 1;
#define	DPRINTF(arg) if (vrpiu_debug) printf arg;
#else
#define	DPRINTF(arg)
#endif

int	tx39ir_match	__P((struct device*, struct cfdata*, void*));
void	tx39ir_attach	__P((struct device*, struct device*, void*));

struct tx39ir_softc {
	struct	device sc_dev;
	struct	device *sc_parent;
	tx_chipset_tag_t sc_tc;
};

void	tx39ir_dump	__P((struct tx39ir_softc*));
int	tx39ir_intr	__P((void*));

struct cfattach tx39ir_ca = {
	sizeof(struct tx39ir_softc), tx39ir_match, tx39ir_attach
};

int
tx39ir_match(parent, cf, aux)
	struct device *parent;
	struct cfdata *cf;
	void *aux;
{
	return 1;
}

void
tx39ir_attach(parent, self, aux)
	struct device *parent;
	struct device *self;
	void *aux;
{
	struct txcom_attach_args *tca = aux;
	struct tx39ir_softc *sc = (void*)self;
	tx_chipset_tag_t tc;
	txreg_t reg;

	sc->sc_tc = tc = tca->tca_tc;
	sc->sc_parent = tca->tca_parent;

	printf("\n");

	/* setup IR module */
	reg = tx_conf_read(tc, TX39_IRCTRL1_REG);
	reg |= TX39_IRCTRL1_RXPWR;
	tx_conf_write(tc, TX39_IRCTRL1_REG, reg);

	/* power up IR module */
	reg = tx_conf_read(tc, TX39_CLOCKCTRL_REG);
	reg |= TX39_CLOCK_ENIRCLK | TX39_CLOCK_ENUARTBCLK;
	tx_conf_write(tc, TX39_CLOCKCTRL_REG, reg);

	/* turn to pulse mode UARTB */
	txcom_pulse_mode(sc->sc_parent);

#if not_required_yet
	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_CARSTINT),
			  IST_EDGE, IPL_TTY, tx39ir_intr, sc);
	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_POSCARINT),
			  IST_EDGE, IPL_TTY, tx39ir_intr, sc);
	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_NEGCARINT),
			  IST_EDGE, IPL_TTY, tx39ir_intr, sc);
#endif

#ifdef TX39IRDEBUG
	tx39ir_dump(sc);
#endif	
}

#define ISSETPRINT(r, m) __is_set_print((u_int32_t)(r), \
	TX39_IRCTRL1_##m, #m)

void
tx39ir_dump(sc)
	struct tx39ir_softc *sc;
{
	tx_chipset_tag_t tc = sc->sc_tc;
	txreg_t reg;

	reg = tx_conf_read(tc, TX39_IRCTRL1_REG);
	ISSETPRINT(reg, CARDET);
	ISSETPRINT(reg, TESTIR);
	ISSETPRINT(reg, DTINVERT);
	ISSETPRINT(reg, RXPWR);
	ISSETPRINT(reg, ENSTATE);
	ISSETPRINT(reg, ENCOMSM);
	printf("baudval %d\n", TX39_IRCTRL1_BAUDVAL(reg));
}

int
tx39ir_intr(arg)
	void *arg;
{
	return 0;
}