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tx39ir.c revision 1.8.76.1 
      1 /*	$NetBSD: tx39ir.c,v 1.8.76.1 2008/05/18 12:32:04 yamt 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * TX39 IR module (connected to UARTB)
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 __KERNEL_RCSID(0, "$NetBSD: tx39ir.c,v 1.8.76.1 2008/05/18 12:32:04 yamt Exp $");
     38 
     39 #undef TX39IRDEBUG
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/device.h>
     44 
     45 #include <machine/bus.h>
     46 #include <machine/intr.h>
     47 
     48 #include <hpcmips/tx/tx39var.h>
     49 #include <hpcmips/tx/tx39icureg.h>
     50 #include <hpcmips/tx/tx39irvar.h>
     51 #include <hpcmips/tx/tx39irreg.h>
     52 
     53 #include <hpcmips/tx/tx39clockreg.h> /* XXX */
     54 
     55 #ifdef TX39IRDEBUG
     56 int	tx39ir_debug = 1;
     57 #define	DPRINTF(arg) if (vrpiu_debug) printf arg;
     58 #else
     59 #define	DPRINTF(arg)
     60 #endif
     61 
     62 int	tx39ir_match(struct device *, struct cfdata *, void *);
     63 void	tx39ir_attach(struct device *, struct device *, void *);
     64 
     65 struct tx39ir_softc {
     66 	struct	device sc_dev;
     67 	struct	device *sc_parent;
     68 	tx_chipset_tag_t sc_tc;
     69 };
     70 
     71 #ifdef TX39IRDEBUG
     72 static void	tx39ir_dump(struct tx39ir_softc *);
     73 #endif
     74 #if not_required_yet
     75 static int	tx39ir_intr(void *);
     76 #endif
     77 
     78 CFATTACH_DECL(tx39ir, sizeof(struct tx39ir_softc),
     79     tx39ir_match, tx39ir_attach, NULL, NULL);
     80 
     81 int
     82 tx39ir_match(struct device *parent, struct cfdata *cf, void *aux)
     83 {
     84 	return (ATTACH_NORMAL);
     85 }
     86 
     87 void
     88 tx39ir_attach(struct device *parent, struct device *self, void *aux)
     89 {
     90 	struct txcom_attach_args *tca = aux;
     91 	struct tx39ir_softc *sc = (void*)self;
     92 	tx_chipset_tag_t tc;
     93 	txreg_t reg;
     94 
     95 	sc->sc_tc = tc = tca->tca_tc;
     96 	sc->sc_parent = tca->tca_parent;
     97 
     98 	printf("\n");
     99 
    100 	/* setup IR module */
    101 	reg = tx_conf_read(tc, TX39_IRCTRL1_REG);
    102 	reg |= TX39_IRCTRL1_RXPWR;
    103 	tx_conf_write(tc, TX39_IRCTRL1_REG, reg);
    104 
    105 	/* power up IR module */
    106 	reg = tx_conf_read(tc, TX39_CLOCKCTRL_REG);
    107 	reg |= TX39_CLOCK_ENIRCLK | TX39_CLOCK_ENUARTBCLK;
    108 	tx_conf_write(tc, TX39_CLOCKCTRL_REG, reg);
    109 
    110 	/* turn to pulse mode UARTB */
    111 	txcom_pulse_mode(sc->sc_parent);
    112 
    113 #if not_required_yet
    114 	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_CARSTINT),
    115 	    IST_EDGE, IPL_TTY, tx39ir_intr, sc);
    116 	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_POSCARINT),
    117 	    IST_EDGE, IPL_TTY, tx39ir_intr, sc);
    118 	tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_NEGCARINT),
    119 	    IST_EDGE, IPL_TTY, tx39ir_intr, sc);
    120 #endif
    121 
    122 #ifdef TX39IRDEBUG
    123 	tx39ir_dump(sc);
    124 #endif
    125 }
    126 
    127 #ifdef TX39IRDEBUG
    128 void
    129 tx39ir_dump(struct tx39ir_softc *sc)
    130 {
    131 	tx_chipset_tag_t tc = sc->sc_tc;
    132 	txreg_t reg;
    133 
    134 	reg = tx_conf_read(tc, TX39_IRCTRL1_REG);
    135 #define ISSETPRINT(r, m) dbg_bitmask_print((u_int32_t)(r),			\
    136 	TX39_IRCTRL1_##m, #m)
    137 	ISSETPRINT(reg, CARDET);
    138 	ISSETPRINT(reg, TESTIR);
    139 	ISSETPRINT(reg, DTINVERT);
    140 	ISSETPRINT(reg, RXPWR);
    141 	ISSETPRINT(reg, ENSTATE);
    142 	ISSETPRINT(reg, ENCOMSM);
    143 #undef	ISSETPRINT
    144 	printf("baudval %d\n", TX39_IRCTRL1_BAUDVAL(reg));
    145 }
    146 #endif
    147 
    148 #if not_required_yet
    149 int
    150 tx39ir_intr(void *arg)
    151 {
    152 	return (0);
    153 }
    154 #endif
    155