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
tx39ir_match(device_t parent,cfdata_t cf,void * aux)78 tx39ir_match(device_t parent, cfdata_t cf, void *aux)
79 {
80 return (ATTACH_NORMAL);
81 }
82
83 void
tx39ir_attach(device_t parent,device_t self,void * aux)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
tx39ir_dump(struct tx39ir_softc * sc)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
tx39ir_intr(void * arg)146 tx39ir_intr(void *arg)
147 {
148 return (0);
149 }
150 #endif
151