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joy_eap.c revision 1.9 
      1 /* $NetBSD: joy_eap.c,v 1.9 2008/03/26 18:27:07 xtraeme Exp $ */
      2 
      3 #include <sys/cdefs.h>
      4 __KERNEL_RCSID(0, "$NetBSD: joy_eap.c,v 1.9 2008/03/26 18:27:07 xtraeme Exp $");
      5 
      6 #include <sys/param.h>
      7 #include <sys/systm.h>
      8 #include <sys/kernel.h>
      9 #include <sys/device.h>
     10 #include <sys/audioio.h>
     11 #include <dev/audio_if.h>
     12 #include <sys/bus.h>
     13 
     14 #include <dev/pci/eapreg.h>
     15 #include <dev/pci/eapvar.h>
     16 #include <dev/ic/joyvar.h>
     17 
     18 struct joy_eap_aa {
     19 	struct audio_attach_args aa_aaa;
     20 	bus_space_tag_t aa_iot;
     21 	bus_space_handle_t aa_ioh;
     22 };
     23 
     24 device_t
     25 eap_joy_attach(device_t eapdev, struct eap_gameport_args *gpa)
     26 {
     27 	int i;
     28 	bus_space_handle_t ioh;
     29 	u_int32_t icsc;
     30 	struct joy_eap_aa aa;
     31 	device_t joydev;
     32 
     33 	/*
     34 	 * There are 4 possible locations. Just try to map one of them.
     35 	 * XXX This is questionable for 2 reasons:
     36 	 * - We don't know whether these addresses are usable on our
     37 	 *   PCI bus (might be a secondary one).
     38 	 * - PCI probing is early. ISA devices might conflict.
     39 	 */
     40 	for (i = 0; i < 4; i++) {
     41 		if (bus_space_map(gpa->gpa_iot, 0x200 + i * 8, 1,
     42 		    0, &ioh) == 0)
     43 			break;
     44 	}
     45 	if (i == 4)
     46 		return 0;
     47 
     48 	printf("%s: enabling gameport at legacy io port 0x%x\n",
     49 		eapdev->dv_xname, 0x200 + i * 8);
     50 
     51 	/* enable gameport on eap */
     52 	icsc = bus_space_read_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC);
     53 	icsc &= ~E1371_JOY_ASELBITS;
     54 	icsc |= EAP_JYSTK_EN | E1371_JOY_ASEL(i);
     55 	bus_space_write_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC, icsc);
     56 
     57 	aa.aa_aaa.type = AUDIODEV_TYPE_AUX;
     58 	aa.aa_iot = gpa->gpa_iot;
     59 	aa.aa_ioh = ioh;
     60 	joydev = config_found(eapdev, &aa, 0);
     61 	/* this cannot fail */
     62 	KASSERT(joydev != NULL);
     63 
     64 	return joydev;
     65 }
     66 
     67 int
     68 eap_joy_detach(device_t joydev, struct eap_gameport_args *gpa)
     69 {
     70 	int res;
     71 	struct joy_softc *sc = (struct joy_softc *)joydev;
     72 	u_int32_t icsc;
     73 
     74 	res = config_detach(joydev, 0);
     75 	if (res)
     76 		return res;
     77 
     78 	/* disable gameport on eap */
     79 	icsc = bus_space_read_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC);
     80 	icsc &= ~EAP_JYSTK_EN;
     81 	bus_space_write_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC, icsc);
     82 
     83 	bus_space_unmap(sc->sc_iot, sc->sc_ioh, 1);
     84 	return 0;
     85 }
     86 
     87 static int
     88 joy_eap_match(device_t parent, cfdata_t match, void *aux)
     89 {
     90 	struct joy_eap_aa *eaa = aux;
     91 
     92 	if (eaa->aa_aaa.type != AUDIODEV_TYPE_AUX)
     93 		return 0;
     94 	return 1;
     95 }
     96 
     97 static void
     98 joy_eap_attach(device_t parent, device_t self, void *aux)
     99 {
    100 	struct joy_softc *sc = device_private(self);
    101 	struct joy_eap_aa *eaa = aux;
    102 
    103 	aprint_normal("\n");
    104 
    105 	sc->sc_iot = eaa->aa_iot;
    106 	sc->sc_ioh = eaa->aa_ioh;
    107 	sc->sc_dev = self;
    108 
    109 	joyattach(sc);
    110 }
    111 
    112 static int
    113 joy_eap_detach(device_t self, int flags)
    114 {
    115 
    116 	return joydetach((struct joy_softc *)self, flags);
    117 }
    118 
    119 CFATTACH_DECL_NEW(joy_eap, sizeof (struct joy_softc),
    120 	joy_eap_match, joy_eap_attach, joy_eap_detach, NULL);
    121