sys/arch/hpcmips/tx/tx39ir.c

   1 /*      $NetBSD: tx39ir.c,v 1.8 2005/12/11 12:17:34 christos 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 2005/12/11 12:17:34 christos 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