sys/dev/pci/joy_eap.c

   1 /* $NetBSD: joy_eap.c,v 1.11 2009/05/06 09:32:52 cegger Exp $ */
   2
   3 #include <sys/cdefs.h>
   4 __KERNEL_RCSID(0, "$NetBSD: joy_eap.c,v 1.11 2009/05/06 09:32:52 cegger 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                 device_xname(eapdev), 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 = device_private(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(device_private(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);