1 /* $NetBSD: tx39ir.c,v 1.11 2023/09/10 20:28:25 andvar 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 1.11 2023/09/10 20:28:25 andvar Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 43 #include <machine/bus.h> 44 #include <machine/intr.h> 45 46 #include <hpcmips/tx/tx39var.h> 47 #include <hpcmips/tx/tx39icureg.h> 48 #include <hpcmips/tx/tx39irvar.h> 49 #include <hpcmips/tx/tx39irreg.h> 50 51 #include <hpcmips/tx/tx39clockreg.h> /* XXX */ 52 53 #ifdef TX39IRDEBUG 54 #define DPRINTF_ENABLE 55 #define DPRINTF_DEBUG tx39ir_debug 56 #endif 57 #include <machine/debug.h> 58 59 int tx39ir_match(device_t, cfdata_t, void *); 60 void tx39ir_attach(device_t, device_t, void *); 61 62 struct tx39ir_softc { 63 device_t sc_parent; 64 tx_chipset_tag_t sc_tc; 65 }; 66 67 #ifdef TX39IRDEBUG 68 static void tx39ir_dump(struct tx39ir_softc *); 69 #endif 70 #if not_required_yet 71 static int tx39ir_intr(void *); 72 #endif 73 74 CFATTACH_DECL_NEW(tx39ir, sizeof(struct tx39ir_softc), 75 tx39ir_match, tx39ir_attach, NULL, NULL); 76 77 int 78 tx39ir_match(device_t parent, cfdata_t cf, void *aux) 79 { 80 return (ATTACH_NORMAL); 81 } 82 83 void 84 tx39ir_attach(device_t parent, device_t self, void *aux) 85 { 86 struct txcom_attach_args *tca = aux; 87 struct tx39ir_softc *sc = device_private(self); 88 tx_chipset_tag_t tc; 89 txreg_t reg; 90 91 sc->sc_tc = tc = tca->tca_tc; 92 sc->sc_parent = tca->tca_parent; 93 94 printf("\n"); 95 96 /* setup IR module */ 97 reg = tx_conf_read(tc, TX39_IRCTRL1_REG); 98 reg |= TX39_IRCTRL1_RXPWR; 99 tx_conf_write(tc, TX39_IRCTRL1_REG, reg); 100 101 /* power up IR module */ 102 reg = tx_conf_read(tc, TX39_CLOCKCTRL_REG); 103 reg |= TX39_CLOCK_ENIRCLK | TX39_CLOCK_ENUARTBCLK; 104 tx_conf_write(tc, TX39_CLOCKCTRL_REG, reg); 105 106 /* turn to pulse mode UARTB */ 107 txcom_pulse_mode(sc->sc_parent); 108 109 #if not_required_yet 110 tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_CARSTINT), 111 IST_EDGE, IPL_TTY, tx39ir_intr, sc); 112 tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_POSCARINT), 113 IST_EDGE, IPL_TTY, tx39ir_intr, sc); 114 tx_intr_establish(tc, MAKEINTR(5, TX39_INTRSTATUS5_NEGCARINT), 115 IST_EDGE, IPL_TTY, tx39ir_intr, sc); 116 #endif 117 118 #ifdef TX39IRDEBUG 119 tx39ir_dump(sc); 120 #endif 121 } 122 123 #ifdef TX39IRDEBUG 124 void 125 tx39ir_dump(struct tx39ir_softc *sc) 126 { 127 tx_chipset_tag_t tc = sc->sc_tc; 128 txreg_t reg; 129 130 reg = tx_conf_read(tc, TX39_IRCTRL1_REG); 131 #define ISSETPRINT(r, m) dbg_bitmask_print((u_int32_t)(r), \ 132 TX39_IRCTRL1_##m, #m) 133 ISSETPRINT(reg, CARDET); 134 ISSETPRINT(reg, TESTIR); 135 ISSETPRINT(reg, DTINVERT); 136 ISSETPRINT(reg, RXPWR); 137 ISSETPRINT(reg, ENSTATE); 138 ISSETPRINT(reg, ENCOMSM); 139 #undef ISSETPRINT 140 printf("baudval %d\n", TX39_IRCTRL1_BAUDVAL(reg)); 141 } 142 #endif 143 144 #if not_required_yet 145 int 146 tx39ir_intr(void *arg) 147 { 148 return (0); 149 } 150 #endif 151