xref: /netbsd-src/sys/arch/powerpc/booke/dev/pq3diic.c (revision 66fba52e4619ef9a369226cff8c03152b1a40a11)
1 /*	$NetBSD: pq3diic.c,v 1.7 2022/07/22 23:43:24 thorpej Exp $	*/
2 /*-
3  * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
4  * All rights reserved.
5  *
6  * This code is derived from software contributed to The NetBSD Foundation
7  * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
8  * Agency and which was developed by Matt Thomas of 3am Software Foundry.
9  *
10  * This material is based upon work supported by the Defense Advanced Research
11  * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
12  * Contract No. N66001-09-C-2073.
13  * Approved for Public Release, Distribution Unlimited
14  *
15  * Redistribution and use in source and binary forms, with or without
16  * modification, are permitted provided that the following conditions
17  * are met:
18  * 1. Redistributions of source code must retain the above copyright
19  *    notice, this list of conditions and the following disclaimer.
20  * 2. Redistributions in binary form must reproduce the above copyright
21  *    notice, this list of conditions and the following disclaimer in the
22  *    documentation and/or other materials provided with the distribution.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
25  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34  * POSSIBILITY OF SUCH DAMAGE.
35  */
36 
37 #include <sys/cdefs.h>
38 __KERNEL_RCSID(0, "$NetBSD: pq3diic.c,v 1.7 2022/07/22 23:43:24 thorpej Exp $");
39 
40 #include "ioconf.h"
41 
42 #include <sys/param.h>
43 #include <sys/cpu.h>
44 #include <sys/device.h>
45 #include <sys/tty.h>
46 
47 #include <sys/intr.h>
48 #include <sys/bus.h>
49 
50 #include <dev/i2c/i2cvar.h>
51 
52 #include <dev/i2c/motoi2creg.h>
53 #include <dev/i2c/motoi2cvar.h>
54 
55 #include <powerpc/booke/cpuvar.h>
56 #include <powerpc/booke/e500var.h>
57 #include <powerpc/booke/e500reg.h>
58 
59 static int pq3diic_match(device_t, cfdata_t, void *);
60 static void pq3diic_attach(device_t, device_t, void *);
61 
62 CFATTACH_DECL_NEW(pq3diic, sizeof(struct motoi2c_softc),
63     pq3diic_match, pq3diic_attach, NULL, NULL);
64 
65 static int
pq3diic_match(device_t parent,cfdata_t cf,void * aux)66 pq3diic_match(device_t parent, cfdata_t cf, void *aux)
67 {
68 
69 	if (!e500_cpunode_submatch(parent, cf, cf->cf_name, aux))
70 		return 0;
71 
72 	return 1;
73 }
74 
75 #if 0
76 static int
77 pq3diic_intr(void *arg)
78 {
79 	struct pq3diic_softc * const sc = arg;
80 
81 	return motoi2c_intr(&sc->sc_motoi2c);
82 }
83 #endif
84 
85 static void
pq3diic_attach(device_t parent,device_t self,void * aux)86 pq3diic_attach(device_t parent, device_t self, void *aux)
87 {
88 	struct cpunode_softc * const psc = device_private(parent);
89 	struct motoi2c_softc * const sc = device_private(self);
90 	struct cpunode_attach_args * const cna = aux;
91 	struct cpunode_locators * const cnl = &cna->cna_locs;
92 	int error;
93 
94 	psc->sc_children |= cna->cna_childmask;
95 	sc->sc_dev = self;
96 
97 	aprint_normal("\n");
98 
99 	sc->sc_iot = cna->cna_memt;
100 	error = bus_space_map(sc->sc_iot, cnl->cnl_addr, I2C_SIZE,
101 	    0, &sc->sc_ioh);
102 	if (error) {
103 		aprint_error_dev(self,
104 		    "can't map registers (error = %d)\n", error);
105 		return;
106 	}
107 
108 	motoi2c_attach(sc, NULL);
109 
110 #if 0
111 	/*
112 	 * XXX e500_intr.c can't handle shared interrupts, but that's
113 	 * XXX ok, because motoi2c doesn't support using interrupts
114 	 * XXX at the moment anyway.
115 	 */
116 	sc->sc_ih = intr_establish(cnl->cnl_intrs[0], IPL_VM, IST_ONCHIP,
117 	    pq3diic_intr, sc);
118 	if (sc->sc_ih == NULL)
119 		aprint_error_dev(self, "failed to establish interrupt %d\n",
120 		     cnl->cnl_intrs[0]);
121 	else
122 		aprint_normal_dev(self, "interrupting on irq %d\n",
123 		     cnl->cnl_intrs[0]);
124 #endif
125 }
126