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tx39ir.c revision 1.6.6.2 
      1 /*	$NetBSD: tx39ir.c,v 1.6.6.2 2004/09/18 14:34:59 skrll Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * TX39 IR module (connected to UARTB)
     41  */
     42 
     43 #include <sys/cdefs.h>
     44 __KERNEL_RCSID(0, "$NetBSD: tx39ir.c,v 1.6.6.2 2004/09/18 14:34:59 skrll Exp $");
     45 
     46 #undef TX39IRDEBUG
     47 
     48 #include <sys/param.h>
     49 #include <sys/systm.h>
     50 #include <sys/device.h>
     51 
     52 #include <machine/bus.h>
     53 #include <machine/intr.h>
     54 
     55 #include <hpcmips/tx/tx39var.h>
     56 #include <hpcmips/tx/tx39icureg.h>
     57 #include <hpcmips/tx/tx39irvar.h>
     58 #include <hpcmips/tx/tx39irreg.h>
     59 
     60 #include <hpcmips/tx/tx39clockreg.h> /* XXX */
     61 
     62 #ifdef TX39IRDEBUG
     63 int	tx39ir_debug = 1;
     64 #define	DPRINTF(arg) if (vrpiu_debug) printf arg;
     65 #else
     66 #define	DPRINTF(arg)
     67 #endif
     68 
     69 int	tx39ir_match(struct device *, struct cfdata *, void *);
     70 void	tx39ir_attach(struct device *, struct device *, void *);
     71 
     72 struct tx39ir_softc {
     73 	struct	device sc_dev;
     74 	struct	device *sc_parent;
     75 	tx_chipset_tag_t sc_tc;
     76 };
     77 
     78 #ifdef TX39IRDEBUG
     79 static void	tx39ir_dump(struct tx39ir_softc *);
     80 #endif
     81 #if not_required_yet
     82 static int	tx39ir_intr(void *);
     83 #endif
     84 
     85 CFATTACH_DECL(tx39ir, sizeof(struct tx39ir_softc),
     86     tx39ir_match, tx39ir_attach, NULL, NULL);
     87 
     88 int
     89 tx39ir_match(struct device *parent, struct cfdata *cf, void *aux)
     90 {
     91 	return (ATTACH_NORMAL);
     92 }
     93 
     94 void
     95 tx39ir_attach(struct device *parent, struct device *self, void *aux)
     96 {
     97 	struct txcom_attach_args *tca = aux;
     98 	struct tx39ir_softc *sc = (void*)self;
     99 	tx_chipset_tag_t tc;
    100 	txreg_t reg;
    101 
    102 	sc->sc_tc = tc = tca->tca_tc;
    103 	sc->sc_parent = tca->tca_parent;
    104 
    105 	printf("\n");
    106 
    107 	/* setup IR module */
    108 	reg = tx_conf_read(tc, TX39_IRCTRL1_REG);
    109 	reg |= TX39_IRCTRL1_RXPWR;
    110 	tx_conf_write(tc, TX39_IRCTRL1_REG, reg);
    111 
    112 	/* power up IR module */
    113 	reg = tx_conf_read(tc, TX39_CLOCKCTRL_REG);
    114 	reg |= TX39_CLOCK_ENIRCLK | TX39_CLOCK_ENUARTBCLK;
    115 	tx_conf_write(tc, TX39_CLOCKCTRL_REG, reg);
    116 
    117 	/* turn to pulse mode UARTB */
    118 	txcom_pulse_mode(sc->sc_parent);
    119 
    120 #if not_required_yet
    121 	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_CARSTINT),
    122 	    IST_EDGE, IPL_TTY, tx39ir_intr, sc);
    123 	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_POSCARINT),
    124 	    IST_EDGE, IPL_TTY, tx39ir_intr, sc);
    125 	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_NEGCARINT),
    126 	    IST_EDGE, IPL_TTY, tx39ir_intr, sc);
    127 #endif
    128 
    129 #ifdef TX39IRDEBUG
    130 	tx39ir_dump(sc);
    131 #endif
    132 }
    133 
    134 #ifdef TX39IRDEBUG
    135 void
    136 tx39ir_dump(struct tx39ir_softc *sc)
    137 {
    138 	tx_chipset_tag_t tc = sc->sc_tc;
    139 	txreg_t reg;
    140 
    141 	reg = tx_conf_read(tc, TX39_IRCTRL1_REG);
    142 #define ISSETPRINT(r, m) dbg_bitmask_print((u_int32_t)(r),			\
    143 	TX39_IRCTRL1_##m, #m)
    144 	ISSETPRINT(reg, CARDET);
    145 	ISSETPRINT(reg, TESTIR);
    146 	ISSETPRINT(reg, DTINVERT);
    147 	ISSETPRINT(reg, RXPWR);
    148 	ISSETPRINT(reg, ENSTATE);
    149 	ISSETPRINT(reg, ENCOMSM);
    150 #undef	ISSETPRINT
    151 	printf("baudval %d\n", TX39_IRCTRL1_BAUDVAL(reg));
    152 }
    153 #endif
    154 
    155 #if not_required_yet
    156 int
    157 tx39ir_intr(void *arg)
    158 {
    159 	return (0);
    160 }
    161 #endif
    162