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      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
     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
     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