1 /* $NetBSD: joy_eap.c,v 1.17 2021/08/07 16:19:14 thorpej Exp $ */
2
3 #include <sys/cdefs.h>
4 __KERNEL_RCSID(0, "$NetBSD: joy_eap.c,v 1.17 2021/08/07 16:19:14 thorpej 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 <sys/bus.h>
12
13 #include <dev/audio/audio_if.h>
14
15 #include <dev/pci/eapreg.h>
16 #include <dev/pci/eapvar.h>
17
18 #include <dev/ic/joyvar.h>
19
20 struct joy_eap_aa {
21 struct audio_attach_args aa_aaa;
22 bus_space_tag_t aa_iot;
23 bus_space_handle_t aa_ioh;
24 };
25
26 device_t
eap_joy_attach(device_t eapdev,struct eap_gameport_args * gpa)27 eap_joy_attach(device_t eapdev, struct eap_gameport_args *gpa)
28 {
29 int i;
30 bus_space_handle_t ioh;
31 u_int32_t icsc;
32 struct joy_eap_aa aa;
33 device_t joydev;
34
35 /*
36 * There are 4 possible locations. Just try to map one of them.
37 * XXX This is questionable for 2 reasons:
38 * - We don't know whether these addresses are usable on our
39 * PCI bus (might be a secondary one).
40 * - PCI probing is early. ISA devices might conflict.
41 */
42 for (i = 0; i < 4; i++) {
43 if (bus_space_map(gpa->gpa_iot, 0x200 + i * 8, 1,
44 0, &ioh) == 0)
45 break;
46 }
47 if (i == 4)
48 return 0;
49
50 printf("%s: enabling gameport at legacy io port 0x%x\n",
51 device_xname(eapdev), 0x200 + i * 8);
52
53 /* enable gameport on eap */
54 icsc = bus_space_read_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC);
55 icsc &= ~E1371_JOY_ASELBITS;
56 icsc |= EAP_JYSTK_EN | E1371_JOY_ASEL(i);
57 bus_space_write_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC, icsc);
58
59 aa.aa_aaa.type = AUDIODEV_TYPE_AUX;
60 aa.aa_iot = gpa->gpa_iot;
61 aa.aa_ioh = ioh;
62 joydev = config_found(eapdev, &aa, 0,
63 CFARGS(.iattr = "eap"));
64 /* this cannot fail */
65 KASSERT(joydev != NULL);
66
67 return joydev;
68 }
69
70 int
eap_joy_detach(device_t joydev,struct eap_gameport_args * gpa)71 eap_joy_detach(device_t joydev, struct eap_gameport_args *gpa)
72 {
73 int res;
74 struct joy_softc *sc = device_private(joydev);
75 u_int32_t icsc;
76
77 res = config_detach(joydev, 0);
78 if (res)
79 return res;
80
81 /* disable gameport on eap */
82 icsc = bus_space_read_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC);
83 icsc &= ~EAP_JYSTK_EN;
84 bus_space_write_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC, icsc);
85
86 bus_space_unmap(sc->sc_iot, sc->sc_ioh, 1);
87 return 0;
88 }
89
90 static int
joy_eap_match(device_t parent,cfdata_t match,void * aux)91 joy_eap_match(device_t parent, cfdata_t match, void *aux)
92 {
93 struct joy_eap_aa *eaa = aux;
94
95 if (eaa->aa_aaa.type != AUDIODEV_TYPE_AUX)
96 return 0;
97 return 1;
98 }
99
100 static void
joy_eap_attach(device_t parent,device_t self,void * aux)101 joy_eap_attach(device_t parent, device_t self, void *aux)
102 {
103 struct joy_softc *sc = device_private(self);
104 struct eap_softc *esc = device_private(parent);
105 struct joy_eap_aa *eaa = aux;
106
107 aprint_normal("\n");
108
109 sc->sc_iot = eaa->aa_iot;
110 sc->sc_ioh = eaa->aa_ioh;
111 sc->sc_dev = self;
112 sc->sc_lock = &esc->sc_lock;
113
114 joyattach(sc);
115 }
116
117 static int
joy_eap_detach(device_t self,int flags)118 joy_eap_detach(device_t self, int flags)
119 {
120
121 return joydetach(device_private(self), flags);
122 }
123
124 CFATTACH_DECL_NEW(joy_eap, sizeof (struct joy_softc),
125 joy_eap_match, joy_eap_attach, joy_eap_detach, NULL);
126