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tegra_hdaudio.c revision 1.1 
      1 /* $NetBSD: tegra_hdaudio.c,v 1.1 2015/03/29 10:41:59 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2015 Jared D. McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include "locators.h"
     30 
     31 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: tegra_hdaudio.c,v 1.1 2015/03/29 10:41:59 jmcneill Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/bus.h>
     36 #include <sys/device.h>
     37 #include <sys/intr.h>
     38 #include <sys/systm.h>
     39 #include <sys/kernel.h>
     40 
     41 #include <dev/hdaudio/hdaudioreg.h>
     42 #include <dev/hdaudio/hdaudiovar.h>
     43 
     44 #include <arm/nvidia/tegra_var.h>
     45 
     46 static int	tegra_hdaudio_match(device_t, cfdata_t, void *);
     47 static void	tegra_hdaudio_attach(device_t, device_t, void *);
     48 static int	tegra_hdaudio_detach(device_t, int);
     49 static int	tegra_hdaudio_rescan(device_t, const char *, const int *);
     50 static void	tegra_hdaudio_childdet(device_t, device_t);
     51 
     52 static int	tegra_hdaudio_intr(void *);
     53 
     54 struct tegra_hdaudio_softc {
     55 	struct hdaudio_softc	sc;
     56 	void			*sc_ih;
     57 };
     58 
     59 CFATTACH_DECL2_NEW(tegra_hdaudio, sizeof(struct tegra_hdaudio_softc),
     60 	tegra_hdaudio_match, tegra_hdaudio_attach, tegra_hdaudio_detach, NULL,
     61 	tegra_hdaudio_rescan, tegra_hdaudio_childdet);
     62 
     63 static int
     64 tegra_hdaudio_match(device_t parent, cfdata_t cf, void *aux)
     65 {
     66 	return 1;
     67 }
     68 
     69 static void
     70 tegra_hdaudio_attach(device_t parent, device_t self, void *aux)
     71 {
     72 	struct tegra_hdaudio_softc * const sc = device_private(self);
     73 	struct tegraio_attach_args * const tio = aux;
     74 	const struct tegra_locators * const loc = &tio->tio_loc;
     75 
     76 	sc->sc.sc_memt = tio->tio_bst;
     77 	bus_space_subregion(tio->tio_bst, tio->tio_bsh,
     78 	    loc->loc_offset, loc->loc_size, &sc->sc.sc_memh);
     79 	sc->sc.sc_memvalid = true;
     80 	sc->sc.sc_dmat = tio->tio_dmat;
     81 
     82 	aprint_naive("\n");
     83 	aprint_normal(": SATA\n");
     84 
     85 	sc->sc_ih = intr_establish(loc->loc_intr, IPL_AUDIO, IST_LEVEL,
     86 	    tegra_hdaudio_intr, sc);
     87 	if (sc->sc_ih == NULL) {
     88 		aprint_error_dev(self, "couldn't establish interrupt %d\n",
     89 		    loc->loc_intr);
     90 		return;
     91 	}
     92 	aprint_normal_dev(self, "interrupting on irq %d\n", loc->loc_intr);
     93 
     94 	hdaudio_attach(self, &sc->sc);
     95 }
     96 
     97 static int
     98 tegra_hdaudio_detach(device_t self, int flags)
     99 {
    100 	struct tegra_hdaudio_softc * const sc = device_private(self);
    101 
    102 	hdaudio_detach(&sc->sc, flags);
    103 
    104 	if (sc->sc_ih) {
    105 		intr_disestablish(sc->sc_ih);
    106 		sc->sc_ih = NULL;
    107 	}
    108 
    109 	sc->sc.sc_memvalid = false;
    110 
    111 	return 0;
    112 }
    113 
    114 static int
    115 tegra_hdaudio_rescan(device_t self, const char *ifattr, const int *locs)
    116 {
    117 	struct tegra_hdaudio_softc * const sc = device_private(self);
    118 
    119 	return hdaudio_rescan(&sc->sc, ifattr, locs);
    120 }
    121 
    122 static void
    123 tegra_hdaudio_childdet(device_t self, device_t child)
    124 {
    125 	struct tegra_hdaudio_softc * const sc = device_private(self);
    126 
    127 	hdaudio_childdet(&sc->sc, child);
    128 }
    129 
    130 static int
    131 tegra_hdaudio_intr(void *priv)
    132 {
    133 	struct tegra_hdaudio_softc * const sc = priv;
    134 
    135 	return hdaudio_intr(&sc->sc);
    136 }
    137